WorldWideScience

Sample records for near-ultraviolet mama spectroscopy

  1. A compact, high resolution Michelson interferometer for atmospheric spectroscopy in the near ultraviolet

    Science.gov (United States)

    Sander, Stanley P.; Cageao, Richard P.; Friedl, Randall R.

    1993-01-01

    A new, compact Fourier Transform Michelson interferometer (FTUV) with an apodized resolving power greater than 300,000 at 300 nm, high throughput and wide spectral coverage has been developed. The objectives include atmospheric spectroscopy (direct solar absorption and solar scattering) and laboratory spectroscopy of transient species. In this paper, we will briefly describe the prototype FTUV instrument and the results of preliminary laboratory investigations of OH and ClO spectra in emission and absorption.

  2. DichroCalc: Improvements in Computing Protein Circular Dichroism Spectroscopy in the Near-Ultraviolet.

    Science.gov (United States)

    Jasim, Sarah B; Li, Zhuo; Guest, Ellen E; Hirst, Jonathan D

    2017-12-16

    A fully quantitative theory connecting protein conformation and optical spectroscopy would facilitate deeper insights into biophysical and simulation studies of protein dynamics and folding. The web server DichroCalc (http://comp.chem.nottingham.ac.uk/dichrocalc) allows one to compute from first principles the electronic circular dichroism spectrum of a (modeled or experimental) protein structure or ensemble of structures. The regular, repeating, chiral nature of secondary structure elements leads to intense bands in the far-ultraviolet (UV). The near-UV bands are much weaker and have been challenging to compute theoretically. We report some advances in the accuracy of calculations in the near-UV, realized through the consideration of the vibrational structure of the electronic transitions of aromatic side chains. The improvements have been assessed over a set of diverse proteins. We illustrate them using bovine pancreatic trypsin inhibitor and present a new, detailed analysis of the interactions which are most important in determining the near-UV circular dichroism spectrum. Copyright © 2018. Published by Elsevier Ltd.

  3. NEAR-ULTRAVIOLET SPECTROSCOPY OF STAR-FORMING GALAXIES FROM eBOSS: SIGNATURES OF UBIQUITOUS GALACTIC-SCALE OUTFLOWS

    International Nuclear Information System (INIS)

    Zhu, Guangtun Ben; Comparat, Johan; Kneib, Jean-Paul; Delubac, Timothée; Raichoor, Anand; Yèche, Christophe; Dawson, Kyle S.; Newman, Jeffrey; Zhou, Xu; Schneider, Donald P.

    2015-01-01

    We present rest-frame near-ultraviolet (NUV) spectroscopy of star-forming galaxies (SFGs) at 0.6 < z < 1.2 from the Extended Baryon Oscillation Spectroscopic Survey (eBOSS) in SDSS-IV. One of the eBOSS programs is to obtain 2″ (about 15 kpc) fiber spectra of about 200,000 emission-line galaxies (ELGs) at redshift z ≳ 0.6. We use the data from the pilot observations of this program, including 8620 spectra of SFGs at 0.6 < z < 1.2. The median composite spectra of these SFGs at 2200 Å < λ < 4000 Å feature asymmetric, preferentially blueshifted non-resonant emission, Fe ii*, and blueshifted resonant absorption, e.g., Fe ii and Mg ii, indicating ubiquitous outflows driven by star formation at these redshifts. For the absorption lines, we find a variety of velocity profiles with different degrees of blueshift. Comparing our new observations with the literature, we do not observe the non-resonant emission in the small-aperture (<40 pc) spectra of local star-forming regions with the Hubble Space Telescope, and find the observed line ratios in the SFG spectra to be different from those in the spectra of local star-forming regions, as well as those of quasar absorption-line systems in the same redshift range. We introduce an outflow model that can simultaneously explain the multiple observed properties and suggest that the variety of absorption velocity profiles and the line ratio differences are caused by scattered fluorescent emission filling in on top of the absorption in the large-aperture eBOSS spectra. We develop an observation-driven, model-independent method to correct the emission infill to reveal the true absorption profiles. Finally, we show that the strengths of both the non-resonant emission and the emission-corrected resonant absorption increase with [O ii] λλ3727, 3730 rest equivalent width and luminosity, with a slightly larger dependence on the former. Our results show that the eBOSS and future dark-energy surveys (e.g., Dark Energy Spectroscopic

  4. Hubble Space Telescope STIS observations of GRB 000301C: CCD imaging and near-ultraviolet MAMA spectroscopy

    DEFF Research Database (Denmark)

    Smette, A.; Fruchter, A.S.; Gull, T.R.

    2001-01-01

    We present Space Telescope Imaging Spectrograph observations of the optical transient (OT) counterpart of the c-ray burster GRB 000301C obtained 5 days after the burst, on 2000 March 6. CCD clear-aperture imaging reveals a R similar or equal to 21.50 +/- 0.15 source with no apparent host galaxy...... Telescope images appear to lie on the stellar field of a host galaxy, and as the large H I column density measured here and in later ground-based observations is unlikely on a random line of sight, we believe we are probably seeing absorption from H I in the host galaxy. In any case, this represents...

  5. Hubble space telescope near-ultraviolet spectroscopy of the bright cemp-no star BD+44°493

    International Nuclear Information System (INIS)

    Placco, Vinicius M.; Beers, Timothy C.; Smith, Verne V.; Roederer, Ian U.; Cowan, John J.; Frebel, Anna; Filler, Dan; Ivans, Inese I.; Lawler, James E.; Schatz, Hendrik; Sneden, Christopher; Sobeck, Jennifer S.; Aoki, Wako

    2014-01-01

    We present an elemental-abundance analysis, in the near-ultraviolet (NUV) spectral range, for the extremely metal-poor star BD+44°493 a ninth magnitude subgiant with [Fe/H] =–3.8 and enhanced carbon, based on data acquired with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope. This star is the brightest example of a class of objects that, unlike the great majority of carbon-enhanced metal-poor (CEMP) stars, does not exhibit over-abundances of heavy neutron-capture elements (CEMP-no). In this paper, we validate the abundance determinations for a number of species that were previously studied in the optical region, and obtain strong upper limits for beryllium and boron, as well as for neutron-capture elements from zirconium to platinum, many of which are not accessible from ground-based spectra. The boron upper limit we obtain for BD+44°493, log ε (B) <–0.70, the first such measurement for a CEMP star, is the lowest yet found for very and extremely metal-poor stars. In addition, we obtain even lower upper limits on the abundances of beryllium, log ε (Be) <–2.3, and lead, log ε (Pb) <–0.23 ([Pb/Fe] <+1.90), than those reported by previous analyses in the optical range. Taken together with the previously measured low abundance of lithium, the very low upper limits on Be and B suggest that BD+44°493 was formed at a very early time, and that it could well be a bona-fide second-generation star. Finally, the Pb upper limit strengthens the argument for non-s-process production of the heavy-element abundance patterns in CEMP-no stars.

  6. Visible and near-ultraviolet spectroscopy at Thule AFB (76.5 N) from January 28 - February 15, 1988

    Science.gov (United States)

    Mount, G. H.; Sanders, R. W.; Jakoubek, R. O.; Schmeltekopf, A. L.; Solomon, S.

    1988-01-01

    Near-ultraviolet and visible spectrographs identical to those employed at McMurdo Station, Antarctica (77.8 S) during the austral spring seasons of 1986 and 1987 were used to study the stratosphere above Thule, Greenland (76.5 N) during early spring, 1988. Observations were carried out both at night using the direct moon as a light source, and during the day by collecting the scattered light from the zenith sky when solar zenith angles were less than about 94.5 degrees. Excellent meteorological conditions prevailed in the troposphere and stratosphere at Thule. Surface weather was extremely clear over most of the period, facilitating measurements of the direct light from the moon. The lower stratospheric arctic polar vortex was located very near Thule throughout the observing period, and temperature at the 30 mbar level were typically below -80 C above Thule, according to the National Meteorological Center daily analyses. Thus conditions were favorable for polar stratospheric cloud formation above Thule. Total column ozone abundances were about 350 to 400 Dobson units, and did not suggest a clear temporal trend over the observing period. Stratospheric nitrogen dioxide measurements were complicated by the presence of a large component of tropospheric pollution on many occasions. Stratospheric nitrogen dioxide could be identified on most days using the absorption in the scattered light from the zenith sky, which greatly enhances the stratospheric airmass while suppressing the tropospheric contribution. These measurements suggest that the total vertical column abundance of nitrogen dioxide present over Thule in February was extremely low, sometimes as low as 3 x 10 to the 14th per sq cm. The abundance of nitrogen dioxide increased systemically from about 3 x 10 to the 14th in late January to 1.0 x 10 to the 15th per sq cm in mid-February, perhaps because of photolysis of N2O5 in the upper part of the stratosphere, near 25 to 35 km.

  7. Influence of near ultraviolet light on microorganisms

    International Nuclear Information System (INIS)

    Fraikin, G.Y.A.; Rubin, L.B.

    1980-01-01

    Our results and the recent literature data on the biological action of near ultraviolet light (300-380 nm) are examined in the review. Factual material is presented on the principles governing the manifestation of the following effects of near ultraviolet light in microorganisms: inactivation, delayed growth, photoreactivation, photoprotection, photoinduced sporulation (in fungi), and carotene synthesis. The mature and possible mechanisms of the effects examined are discussed

  8. Near ultraviolet photodissociation spectroscopy of Mn{sup +}(H{sub 2}O) and Mn{sup +}(D{sub 2}O)

    Energy Technology Data Exchange (ETDEWEB)

    Pearson, Wright L.; Copeland, Christopher; Kocak, Abdulkadir; Sallese, Zachary; Metz, Ricardo B., E-mail: rbmetz@chem.umass.edu [Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003 (United States)

    2014-11-28

    The electronic spectra of Mn{sup +}(H{sub 2}O) and Mn{sup +}(D{sub 2}O) have been measured from 30 000 to 35 000 cm{sup −1} using photodissociation spectroscopy. Transitions are observed from the {sup 7}A{sub 1} ground state in which the Mn{sup +} is in a 3d{sup 5}4s{sup 1} electronic configuration, to the {sup 7}B{sub 2} (3d{sup 5}4p{sub y}) and {sup 7}B{sub 1} (3d{sup 5}4p{sub x}) excited states with T{sub 0} = 30 210 and 32 274 cm{sup −1}, respectively. Each electronic transition has partially resolved rotational and extensive vibrational structure with an extended progression in the metal−ligand stretch at a frequency of ∼450 cm{sup −1}. There are also progressions in the in-plane bend in the {sup 7}B{sub 2} state, due to vibronic coupling, and the out-of-plane bend in the {sup 7}B{sub 1} state, where the calculation illustrates that this state is slightly non-planar. Electronic structure computations at the CCSD(T)/aug-cc-pVTZ and TD-DFT B3LYP/6-311++G(3df,3pd) level are also used to characterize the ground and excited states, respectively. These calculations predict a ground state Mn-O bond length of 2.18 Å. Analysis of the experimentally observed vibrational intensities reveals that this bond length decreases by 0.15 ± 0.015 Å and 0.14 ± 0.01 Å in the excited states. The behavior is accounted for by the less repulsive p{sub x} and p{sub y} orbitals causing the Mn{sup +} to interact more strongly with water in the excited states than the ground state. The result is a decrease in the Mn-O bond length, along with an increase in the H-O-H angle. The spectra have well resolved K rotational structure. Fitting this structure gives spin-rotation constants ε{sub aa}″ = −3 ± 1 cm{sup −1} for the ground state and ε{sub aa}′ = 0.5 ± 0.5 cm{sup −1} and ε{sub aa}′ = −4.2 ± 0.7 cm{sup −1} for the first and second excited states, respectively, and A′ = 12.8 ± 0.7 cm{sup −1} for the first excited state. Vibrationally mediated

  9. Effects of near ultraviolet and green radiations on plant growth

    Energy Technology Data Exchange (ETDEWEB)

    Klein, R.M.; Edsall, P.C.; Gentile, A.C.

    1965-01-01

    Selective removal of near ultraviolet and green wavelengths from white light permitted enhanced growth of marigold, tomato, corn, and Impatiens plants, Chlamydomonas cells and the mycelium of Sordaria. Additions of near ultraviolet and green radiations caused repressions in the growth of marigold and Sordaria. These wavelengths do not alter the oxidative mechanisms of mitochondria, intact algal cells or marigold leaf tissues. The capacity for chlorophyll and carotenoid synthesis by Euglena cells was unaffected by these wavelengths. 23 references, 2 figures, 4 tables.

  10. Photoinactivation of Propionibacterium acnes by near-ultraviolet light

    International Nuclear Information System (INIS)

    Kjeldstad, B.

    1984-01-01

    Photodestruction of Propionibacterium acnes was investigated by broad-band near-ultraviolet light. The inactivation of the bacteria was found to be oxygen dependent, and without O 2 practically no photoinactivation occurred. D 2 O caused an increased inactivation (D 10 = 5 kJ/m 2 in D 2 O as compared to D 10 = 11 kJ/m 2 in normal water). Decreased temperature during illumination increased the ability to form colonies. The results are compared with corresponding results for other types of cells and the destruction mechanism is discussed. (orig.)

  11. Transferrable monolithic multicomponent system for near-ultraviolet optoelectronics

    Science.gov (United States)

    Qin, Chuan; Gao, Xumin; Yuan, Jialei; Shi, Zheng; Jiang, Yuan; Liu, Yuhuai; Wang, Yongjin; Amano, Hiroshi

    2018-05-01

    A monolithic near-ultraviolet multicomponent system is implemented on a 0.8-mm-diameter suspended membrane by integrating a transmitter, waveguide, and receiver into a single chip. Two identical InGaN/Al0.10Ga0.90N multiple-quantum well (MQW) diodes are fabricated using the same process flow, which separately function as a transmitter and receiver. There is a spectral overlap between the emission and detection spectra of the MQW diodes. Therefore, the receiver can respond to changes in the emission of the transmitter. The multicomponent system is mechanically transferred from silicon, and the wire-bonded transmitter on glass experimentally demonstrates spatial light transmission at 200 Mbps using non-return-to-zero on–off keying modulation.

  12. Music Activities for "Mama", "Mama" and "Papa", "Papa"

    Science.gov (United States)

    Cardany, Audrey Berger

    2011-01-01

    Jean Marzollo creates two beautiful texts using a child's first words, "Mama, Mama" and "Papa, Papa" as a recurring theme. Wildlife artist, Laura Regan, illustrates Marzollo's poetry with loving images of parents and children in the animal kingdom. Poetry and illustrations highlight the tenderness and care of Mama and Papa as they bond with their…

  13. Sensitivity of Escherichia coli acrA Mutants to Psoralen plus Near-Ultraviolet Radiation

    DEFF Research Database (Denmark)

    Hansen, M. Trier

    1982-01-01

    The sensitivity to psoralen plus near-ultraviolet radiation (PUVA) was compared in a pair of E. coli strains differing at the acrA locus. Survival was determined for both bacteria and phage λ. AcrA mutant cells were 40 times more sensitive than wild type to the lethal effect of PUVA. Free λ phage...

  14. Near ultraviolet spectra of a group of early-type stars with Balmer emission

    International Nuclear Information System (INIS)

    Ringuelet, A.E.

    1980-01-01

    In the near ultraviolet region some absorption features in B stars are easily recognizable as criteria for assigning luminosity class. In the same region the characteristics displayed by Be stars suggest higher luminosities than in the photographic region. It appears that Fe II 2538-2548 A should be useful for studying the outer layers of stellar atmospheres. (author)

  15. Current Spreading Layer with High Transparency and Conductivity for near-ultraviolet light emitting diodes

    DEFF Research Database (Denmark)

    Lin, Li; Jensen, Flemming; Herstrøm, Berit

    Transparent conductive aluminum-doped zinc oxide (AZO) layer was deposited on GaN-based near-ultraviolet (NUV) light emitting epitaxial wafers as current spreading layer by a sputtering process. Efforts were made to improve the electrical properties of AZO in order to produce ohmic contact....

  16. Near ultraviolet spectra of a group of early-type stars with Balmer emission

    Energy Technology Data Exchange (ETDEWEB)

    Ringuelet, A E [Instituto de Astronomia y Fisica del Espacio, Buenos Aires (Argentina)

    1980-08-01

    In the near ultraviolet region some absorption features in B stars are easily recognizable as criteria for assigning luminosity class. In the same region the characteristics displayed by Be stars suggest higher luminosities than in the photographic region. It appears that Fe II 2538-2548 A should be useful for studying the outer layers of stellar atmospheres.

  17. Plastocyanin conformation: an analysis of its near ultraviolet absorption and circular dichroic spectra

    International Nuclear Information System (INIS)

    Draheim, J.E.; Anderson, G.P.; Duane, J.W.; Gross, E.L.

    1986-01-01

    The near-ultraviolet absorption and circular dichroic spectra of plastocyanin are dependent upon the redox state, solution pH, and ammonium sulfate concentration. This dependency was observed in plastocyanin isolated from spinach, poplar, and lettuce. Removal of the copper atom also perturbed the near-ultraviolet spectra. Upon reduction there are increases in both extinction and ellipticity at 252 nm. Further increases at 252 nm were observed upon formation of apo plastocyanin eliminating charge transfer transitions as the cause. The spectral changes in the near-ultraviolet imply a flexible tertiary conformation for plastocyanin. There are at least two charge transfer transitions at ∼295-340 nm. One of these transitions is sensitive to low pH's and is attributed to the His 87 copper ligand. The redox state dependent changes observed in the near-ultraviolet spectra of plastocyanin are attenuated either by decreasing the pH to 5 or by increasing the ammonium sulfate concentration to 2.7 M. This attenuation cannot be easily explained by simple charge screening. Hydrophobic interactions probably play an important role in this phenomenon. The pH and redox state dependent conformational changes may play an important role in regulating electron transport

  18. Eu and Sr2CeO4 : Eu phosphors suitable for near ultraviolet excitation

    Indian Academy of Sciences (India)

    Administrator

    The study on white light phosphors suitable for near- ultraviolet (nUV) ... Rare earth ion-doped phosphors have been used in varied fields ... practical applications. .... by naked eyes. ... induced by Sr2CeO4 host matrix (Arunachalam Laxmanan.

  19. Effect of near-ultraviolet radiation on the cell surface of the protozoan Tritichomonas foetus

    International Nuclear Information System (INIS)

    Filho, F.C.S.; Elias, C.A.; Souza, W. de

    1982-01-01

    It is concluded that the authors' data showing that near-ultraviolet radiation decreases the cellular electrophoretic mobility of Tritrichomonas foetus indicate that ultraviolet radiation may have an important effect on basic properties of the plasma membrane such as (a) its surface charge, (b) the mobility of membrane-associated components, as revealed by the concanavalin A-induced agglutination, and (c) changes in its permeability to cytoplasmic components. These data also indicate that protozoa may be a useful model for studies related with the effect of radiation on eukaryotic cells. (author)

  20. Spectroscopic observations in the visible and near ultraviolet of a laser-produced plasma

    International Nuclear Information System (INIS)

    Zago, A.; Tondello, G.

    1985-01-01

    The emission from a plasma produced by laser focusing on plane targets of the elements Be, B, C and N has been observed in the visible and near ultraviolet. The spectra have been recorded mainly with an optical multichannel analyser allowing great sensitivity of detection. Both continua and line emission have been analysed in terms of plasma properties. Very broad lines of the type Δn = 1 appear prominent in the spectrum and, through their Stark broadening, the electron density of the plasma has been derived

  1. Spectroscopic observations in the visible and near ultraviolet of a laser-produced plasma

    Energy Technology Data Exchange (ETDEWEB)

    Zago, A.; Tondello, G.

    1985-01-11

    The emission from a plasma produced by laser focusing on plane targets of the elements Be, B, C and N has been observed in the visible and near ultraviolet. The spectra have been recorded mainly with an optical multichannel analyser allowing great sensitivity of detection. Both continua and line emission have been analysed in terms of plasma properties. Very broad lines of the type ..delta..n = 1 appear prominent in the spectrum and, through their Stark broadening, the electron density of the plasma has been derived.

  2. Doenças da mama

    Directory of Open Access Journals (Sweden)

    Edimárlei Gonsales Valério

    2012-07-01

    Full Text Available Os distúrbios das mamas podem ser não cancerosos (benignos ou cancerosos (malignos. Os distúrbios não cancerosos incluem a mastalgia (dor nas mamas, os cistos, a doença fibrocística da mama, o fibroadenoma, a secreção através dos mamilos e a infecção da mama.

  3. Broadband sensitized white light emission of g-C_3N_4/Y_2MoO_6:Eu"3"+ composite phosphor under near ultraviolet excitation

    International Nuclear Information System (INIS)

    Han, Bing; Xue, Yongfei; Li, Pengju; Zhang, Jingtao; Zhang, Jie; Shi, Hengzhen

    2015-01-01

    The g-C_3N_4/Y_2MoO_6:Eu"3"+ composite phosphors were synthesized and characterized by X-ray diffraction, Fourier transform-infrared spectroscopy, ultraviolet visible diffuse reflection spectra, photoluminescence spectra and luminescence decay curves. Under the excitation of 360 nm near ultraviolet light, these composite phosphors show tunable emission from blue to red region, in which white light emission can be obtained in term of appropriate quality proportion of Y_2MoO_6:Eu"3"+ relative to g-C_3N_4/Y_2MoO_6:Eu"3"+. In addition, the emission color can be also dependent on the excitation wavelength in g-C_3N_4/Y_2MoO_6:Eu"3"+ composite phosphor. - Graphical abstract: Under the excitation of 360 nm near ultraviolet light, the g-C_3N_4/Y_2MoO_6:Eu"3"+ composite phosphors show tunable emission from blue to red region, in which white light emission can be obtained. - Highlights: • The g-C3N4/Y2MoO6:Eu"3"+ composite phosphors were synthesized and characterized. • White light emission was realized in the g-C3N4/Y2MoO6:Eu"3"+ composites under UV excitation. • A novel idea to realize the broadband sensitized white light emission in phosphors was provided.

  4. TUMOR CONDROLIPOMATOSO (CONDROLIPOMA) DE MAMA

    OpenAIRE

    Sandoval, Diana Katherine; Acevedo R, Melina; Arias V, Carmen Ligia; García A, Ernesto

    2015-01-01

    Introducción: El cartílago es un componente poco común en las lesiones de mama, la mayoría de casos corresponden a metaplasias de lesiones malignas siendo excepcional el hallazgo en lesiones benignas; estas últimas se han subclasificado de acuerdo a las características histológicas destacables para cada autor, pero globalmente se componen de tejido adiposo, estroma fibroso y cartílago, mientras que el componente epitelial mamario es de presentación variable. El condrolipoma de mama fue report...

  5. Recovery after exposure to near-ultraviolet light of cells containing 5-bromodeoxyuridine

    International Nuclear Information System (INIS)

    Hagan, M.P.; Elkind, M.M.

    1981-01-01

    The survival of synchronized V79 Chinese hamster cells irradiated with near-ultraviolet light after a 1-h labeling with 5-bromodeoxyuridine (BrdUrd) is highly dependent upon the cells' position in the cell cycle at the time of irradiation. In this report, we show that cells irradiated in the same S phase after BrdUrd incorporation demonstrate an ability to repair sublethal damage, in contrast to the lack of an increase in survival with dose fractionation in template-labeled cells. In addition, we show that pulse-labeled cells in S phase can repair potentially lethal damage expressed by caffeine. The kinetics of these recovery processes and the absence of a caffeine effect on the rapair of sublethal damage indicate that these two processes are to a large degree unrelated. We conclude that in template-labeled cells inadequate time to effect prereplicational repair precludes effective contributions to cell survival from other kinds of DNA repair processes

  6. Conidioma production of the white root rot fungus [Rosellinia] in axenic culture under near-ultraviolet light radiation

    International Nuclear Information System (INIS)

    Nakamura, H.; Ikeda, K.; Arakawa, M.; Matsumoto, N.

    2002-01-01

    Conidiomata of the white root rot fungus were produced in axenic culture under near-ultraviolet light radiation. Pieces of sterilized Japanese pear twigs were placed on 7-day-old oatmeal agar culture in plates. The plates were further incubated for 5 days and then illuminated by near-ultraviolet light. Synnemata developed on the twigs within 5 weeks in 19 of 20 isolates tested, and conidia were observed in 12 of the 19 isolates. The synnemata and conidia produced were morphologically identical to those of Dematophora necatrix

  7. THE NEAR-ULTRAVIOLET LUMINOSITY FUNCTION OF YOUNG, EARLY M-TYPE DWARF STARS

    International Nuclear Information System (INIS)

    Ansdell, Megan; Baranec, Christoph; Gaidos, Eric; Mann, Andrew W.; Lépine, Sebastien; James, David; Buccino, Andrea; Mauas, Pablo; Petrucci, Romina; Law, Nicholas M.; Riddle, Reed

    2015-01-01

    Planets orbiting within the close-in habitable zones of M dwarf stars will be exposed to elevated high-energy radiation driven by strong magnetohydrodynamic dynamos during stellar youth. Near-ultraviolet (NUV) irradiation can erode and alter the chemistry of planetary atmospheres, and a quantitative description of the evolution of NUV emission from M dwarfs is needed when modeling these effects. We investigated the NUV luminosity evolution of early M-type dwarfs by cross-correlating the Lépine and Gaidos catalog of bright M dwarfs with the Galaxy Evolution Explorer (GALEX) catalog of NUV (1771-2831 Å) sources. Of the 4805 sources with GALEX counterparts, 797 have NUV emission significantly (>2.5σ) in excess of an empirical basal level. We inspected these candidate active stars using visible-wavelength spectra, high-resolution adaptive optics imaging, time-series photometry, and literature searches to identify cases where the elevated NUV emission is due to unresolved background sources or stellar companions; we estimated the overall occurrence of these ''false positives'' (FPs) as ∼16%. We constructed an NUV luminosity function that accounted for FPs, detection biases of the source catalogs, and GALEX upper limits. We found the NUV luminosity function to be inconsistent with predictions from a constant star-formation rate and simplified age-activity relation defined by a two-parameter power law

  8. Near-ultraviolet radiation blocks SOS responses to DNA damage in Escherichia coli

    Energy Technology Data Exchange (ETDEWEB)

    Turner, M.A.; Eisenstark, A.

    1984-01-01

    Escherichia coli cells in which the recA promoter is fused to a lac structural gene, (Mu) Mud(Ap,lac)::rec, were irradiated with two far-ultraviolet light wavelengths (254 and 290 nm), selected monochromatic near-ultraviolet (NUV) wavelengths 313 nm, 334 nm, 365 nm, or broad band solar-UV (290-420 nm) from a solar simulator. Irradiation with the two far-ultraviolet wavelengths was followed by high yields of ..beta..-galactosidase, lambda prophage induction, and Weigle reactivation. These end points were not observed after irradiation with the selected NUV wavelengths or the broad spectrum solar-UV. Thus, neither broad spectrum solar-UV nor monochromatic NUV wavelengths resulted in the derepression of the recA promoter. Further, prior exposure of the cells either to the selected monochromatic NUV wavelengths or to solar-UV inhibited a) the induction of ..beta..-galactosidase by subsequent 254-nm radiation, b) subsequent 254-nm induction of lambda prophage, c) Weigle reactivation, and d) mutation frequency. These observations are consistent with the hypothesis that NUV blocks subsequent recA protease action.

  9. Imaging the Dynamics of CH2BrI Photodissociation in the Near Ultraviolet Region.

    Science.gov (United States)

    Pan, Changen; Zhang, Yi; Lee, Joseph D; Kidwell, Nathanael M

    2018-04-19

    The photodissociation dynamics of jet-cooled CH 2 BrI were investigated in the near-ultraviolet (UV) region from 280-310 nm using velocity map imaging. We report the translational and internal energy distributions of the CH 2 Br radical and ground state I ( 2 P 3/2 ) or spin-orbit excited I ( 2 P 1/2 ) fragments determined by velocity map imaging of the ionized iodine fragments following 2 + 1 resonance-enhanced multiphoton ionization of the nascent neutral iodine products. The velocity distributions indicate that most of the available energy is partitioned into the internal energy of the CH 2 Br radical with only modest translational excitation imparted to the cofragments, which is consistent with a simple impulsive model. Furthermore, from extrapolation of the velocity distribution results, the first determination of the C-I bond dissociation energy of CH 2 BrI is presented in this work to be D 0 = 16 790 ± 590 cm -1 . The ion images appear anisotropic, indicative of a prompt dissociation, and the derived anisotropy parameters are consistently positive. Additionally, the angular distributions report on the electronic excited state dynamics, which validate recent works characterizing the electronic states responsible for the first absorption band of CH 2 BrI. In the current work, photolysis of CH 2 BrI on the red edge of the absorption spectrum reveals an additional channel producing I ( 2 P 3/2 ) fragments.

  10. Induction of UMUC+ gene expression in Escherichia coli irradiated by near ultraviolet light

    International Nuclear Information System (INIS)

    Sato, N.; Ohnishi, T.; Tano, K.; Nozu, K.; Yamamoto, K.

    1985-01-01

    The induction of umu + gene expression caused by irradiation with near ultraviolet light (BLB; black light blue) was studied in Escherichia coli K-12 strains with special reference to the effects of SOS repair deficiencies. The umuC + gene expression was measured as the enzymic activity of β-galactosidase which is regulated by the promoter of the umuC + operon carried in a plasmid DNA carrying a promoter of umuC + operon, a umuD + gene and a umuC + -lacZ + gene fusion. A high induction of the umuC + gene expression was observed in the uvrA cells in the case of BLB or UV irradiation as compared with the parental wild-type cells. Caffeine inhibited the induction of the umuC + gene expression due to BLB or UV irradiation in both strains. There was very little induction in lexA and recA mutants. In contrast with UV irradiation, there was no killing of cells by BLB irradiation in any strain (wild, uvrA, lexA and recA). Possible implications of the experimental results were discussed. (author)

  11. Effects of near-ultraviolet light on mutations, intragenic and intergenic recombinations in Saccharomyces cerevisiae

    International Nuclear Information System (INIS)

    Machida, Isamu; Saeki, Tetsuya; Nakai, Sayaka

    1986-01-01

    The effects of far and near ultraviolet light on mutations, intragenic and intergenic recombinations were compared in diploid strains of Saccharomyces cerevisiae. At equivalent survival levels there was not much difference in the induction of nonsense and missense mutations between far- and near-UV radiations. However, frameshift mutations were induced more frequently by near-UV than by far-UV radiation. Near-UV radiation induced intragenic recombination as efficiently as far-UV radiation. A strikingly higher frequency was observed for the intergenic recombination induced by near-UV radiation than by far-UV radiation when compared at equivalent survival levels. Photoreactivation reduced the frequency only slightly in far-UV induced intergenic recombination and not at all in near-UV induction. These results indicate that near-UV damage involves strand breakage in addition to pyrimidine dimers and other lesions induced, whereas far-UV damage consists largely of photoreactivable lesions, pyrimidine dimers, and near-UV induced damage is more efficient for the induction of crossing-over. (Auth.)

  12. Mechanism of growth delay induced in Escherichia coli by near ultraviolet radiation

    International Nuclear Information System (INIS)

    Ramabhadran, T.V.; Jagger, J.

    1976-01-01

    Continuously growing cultures of E. coli B/r were irradiated with a fluence of broad-band near-ultraviolet radiation (315 to 405 nm) sufficient to cause extensive growth delay and complete cessation of net RNA synthesis. Chloramphenicol treatment was found to stimulate resumption of RNA synthesis, similar to that observed with chloramphenicol treatment after amino-acid starvation. E. coli strains in which amino-acid starvation does not result in cessation of RNA synthesis (''relaxed'' or rel - strains) show no cessation of growth and only a slight effect on the rate of growth or of RNA synthesis. These findings show that such near-uv fluences do not inactivate the RNA synthetic machinery but affect the regulation of RNA synthesis, in a manner similar to that produced by amino-acid starvation. Such regulation is believed to be mediated through alterations in concentration of guanosine tetraphosphate (ppGpp), and our estimations of ppGpp after near-uv irradiation are consistent with such an interpretation. These data, combined with earlier published data, strongly suggest that the mechanism of near-uv-induced growth delay in E. coli involves partial inactivation of certain tRNA species, which is interpreted by the cell in a manner similar to that of amino-acid starvation, causing a rise in ppGpp levels, a shut-off of net RNA synthesis, and the induction of a growth delay

  13. Structural design and optimization of near-ultraviolet light-emitting diodes with wide wells

    Energy Technology Data Exchange (ETDEWEB)

    Kuo, Yen-Kuang, E-mail: ykuo@cc.ncue.edu.tw [Department of Physics, National Changhua University of Education, Changhua 500, Taiwan (China); Chen, Fang-Ming [Institute of Photonics, National Changhua University of Education, Changhua 500, Taiwan (China); Chang, Jih-Yuan [Center for Teacher Education, National Changhua University of Education, Changhua 500, Taiwan (China); Shih, Ya-Hsuan [Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan (China)

    2016-03-07

    The characteristics of the near-ultraviolet (NUV) light-emitting diodes (LEDs) with wide (14-nm-thick) and narrow (2-nm-thick) wells under the situations of different numbers of wells and degree of polarization are systematically investigated. The simulation results show that the Auger recombination can be efficiently suppressed with the increase of number of wells in NUV LEDs. For the LEDs with wide wells, the quantum-confined Stark effect and Shockley–Read–Hall recombination play an important role when the number of wells increases, especially when the LED is under low current injection or high degree of polarization. In order to take the advantage of using wide wells, it is proposed that the quaternary Al{sub 0.1}In{sub 0.05}Ga{sub 0.85}N barriers be used in wide-well NUV LEDs along with the use of Al{sub 0.3}Ga{sub 0.7}N/Al{sub 0.1}Ga{sub 0.9}N superlattice electron-blocking layer to mitigate the polarization effect and electron overflow. With this band-engineering structural design, the optical performance of the wide-well NUV LEDs is much better than its thin-well counterpart even under the situation of high degree of polarization.

  14. Photoeffects of near ultraviolet light upon a polycyclic aromatic hydrocarbon exposed to mouse skin microsomes

    International Nuclear Information System (INIS)

    Peirano, W.B.

    1991-01-01

    Near ultraviolet (UV) light has been reported to both enhance and inhibit the tumor incidence in mice dermally exposed to benzo(a)pyrene (BaP) or polycyclic aromatic hydrocarbon (PAH) mixtures. Near UV light interacts with PAHs producing a variety of oxygenated products such as phenols, endoperoxides and quinones. However, little is known about BaP products formed from near UV irradiation of BaP-exposed mouse skin. Therefore, 14 C-BaP was incubated with 3-methylcholanthrene (3-MC) induced C 3 H/HeJ and DBA/2J mouse skin microsomes with or without a 365 nm light source. The results indicated that the concurrent 365 nm light irradiation of induced mouse skin microsomes and BaP greatly enhanced the total conversion of BaP to its products, approximately 3-fold for the C 3 H/HeJ and approximately 7-fold for the DBA/2J mouse microsomes, compared to the induced mouse skin microsomes and BaP alone. HPLC analyses of organic extracts indicated a more than additive enhancement of the formation of most of the individual cochromatographed BaP metabolites due to the combined interaction of 365 nm light with BaP and skin microsomes. Similar interactions were observed using benz(a)anthracene (BaA) in this system. These data show that near UV light alters the metabolic profile of PAHs produced by mouse skin microsomes

  15. THE NEAR-ULTRAVIOLET LUMINOSITY FUNCTION OF YOUNG, EARLY M-TYPE DWARF STARS

    Energy Technology Data Exchange (ETDEWEB)

    Ansdell, Megan; Baranec, Christoph [Institute for Astronomy, University of Hawaii, Honolulu, HI 96822 (United States); Gaidos, Eric [Department of Geology and Geophysics, University of Hawaii, Honolulu, HI 96822 (United States); Mann, Andrew W. [Department of Astronomy, University of Texas at Austin, Austin, TX 78712 (United States); Lépine, Sebastien [Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302 (United States); James, David [Cerro Tololo Inter-American Observatory, Casilla 603 La Serena (Chile); Buccino, Andrea; Mauas, Pablo; Petrucci, Romina [Instituto de Astronomía y Física del Espacio, C1428EHA Buenos Aires (Argentina); Law, Nicholas M. [Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 (United States); Riddle, Reed [Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States)

    2015-01-01

    Planets orbiting within the close-in habitable zones of M dwarf stars will be exposed to elevated high-energy radiation driven by strong magnetohydrodynamic dynamos during stellar youth. Near-ultraviolet (NUV) irradiation can erode and alter the chemistry of planetary atmospheres, and a quantitative description of the evolution of NUV emission from M dwarfs is needed when modeling these effects. We investigated the NUV luminosity evolution of early M-type dwarfs by cross-correlating the Lépine and Gaidos catalog of bright M dwarfs with the Galaxy Evolution Explorer (GALEX) catalog of NUV (1771-2831 Å) sources. Of the 4805 sources with GALEX counterparts, 797 have NUV emission significantly (>2.5σ) in excess of an empirical basal level. We inspected these candidate active stars using visible-wavelength spectra, high-resolution adaptive optics imaging, time-series photometry, and literature searches to identify cases where the elevated NUV emission is due to unresolved background sources or stellar companions; we estimated the overall occurrence of these ''false positives'' (FPs) as ∼16%. We constructed an NUV luminosity function that accounted for FPs, detection biases of the source catalogs, and GALEX upper limits. We found the NUV luminosity function to be inconsistent with predictions from a constant star-formation rate and simplified age-activity relation defined by a two-parameter power law.

  16. CANCER DE MAMA EN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Mario A. González Mariño

    2014-12-01

    Full Text Available OBJETIVO: Conocer la situación del cáncer de mama en Colombia mediante la revisión de publicaciones epidemiológicas y clínicas. MATERIALES Y MÉTODOS: Evaluación de estudios publicados en revistas científicas seriadas sobre cáncer de mama en Colombia mediante búsqueda en las bases de datos Medline con los términos neoplasm and breast and Colombia y Lilacs con neoplasia y mama y Colombia. Se seleccionaron los estudios con aplicación epidemiológica o clínica con muestreo o datos de mujeres residentes en Colombia, ubicando sus resultados en la sección de introducción y en la de discusión de acuerdo con los enfoques de promoción, prevención y tratamiento. RESULTADOS: Se encontraron 62 referencias en Medline de las que se seleccionaron 23 y en Lilacs de 16 se escogieron 4. Las referencias se descartaron en Medline por las siguientes razones: 15 por el diseño de estudio (revisión de tema, presentación de casos clínicos, 7 por tratarse de investigación básica, 10 por tema diferente al cáncer de mama en Colombia y 7 por datos pertenecientes a otro país. En Lilacs se excluyeron por: 7 artículos también presentes en Medline, 3 por diseño, 1 de investigación básica y 1 de un tema diferente. CONCLUSIONES: Los artículos revisados permiten tener una visión integral sobre el cáncer de mama en Colombia. En ellos se puede verificar que hay limitaciones en la prestación del servicio de atención en salud para esta enfermedad, y se identifican factores de riesgo con significancia estadística como la nuliparidad, niveles altos de inactividad física y exposición a DDE (diclorodifenildicloroeteno y para el cáncer genético se encontraron mutaciones fundadoras. La consulta se hace principalmente por síntomas, no sobre resultados de cribado como sería lo deseable. Existen también contribuciones sobre el manejo quirúrgico y adyuvante extrapolables a las condiciones del país.

  17. Electroluminescence enhancement for near-ultraviolet light emitting diodes with graphene/AZO-based current spreading layers

    DEFF Research Database (Denmark)

    Lin, Li; Ou, Yiyu; Zhu, Xiaolong

    LEDs) have attracted significant research interest due to their intensive applications in various areas where indium tin oxide (ITO) is one of the most widely employed transparent conductive materials for NUV LEDs. Compared to ITO, indium-free aluminum-doped zinc oxide (AZO) has similar electrical......Near-ultraviolet light emitting diodes with different aluminum-doped zinc oxide-based current spreading layers were fabricated and electroluminescence (EL) was compared. A 170% EL enhancement was achieved by using a graphene-based interlayer. GaN-based near-ultraviolet light emitting diodes (NUV...... with a new type of current spreading layer (CSL) which combines AZO and a single-layer graphene (SLG) as an effective transparent CSL [1]. In the present work, LEDs with solo AZO CSL in Fig.1(a) and SLG/Ni/AZO-based CSL in Fig.1(b) were both fabricated for EL comparison. Standard mesa fabrication including...

  18. Pairing of near-ultraviolet solar cells with electrochromic windows for smart management of the solar spectrum

    Science.gov (United States)

    Davy, Nicholas C.; Sezen-Edmonds, Melda; Gao, Jia; Lin, Xin; Liu, Amy; Yao, Nan; Kahn, Antoine; Loo, Yueh-Lin

    2017-08-01

    Current smart window technologies offer dynamic control of the optical transmission of the visible and near-infrared portions of the solar spectrum to reduce lighting, heating and cooling needs in buildings and to improve occupant comfort. Solar cells harvesting near-ultraviolet photons could satisfy the unmet need of powering such smart windows over the same spatial footprint without competing for visible or infrared photons, and without the same aesthetic and design constraints. Here, we report organic single-junction solar cells that selectively harvest near-ultraviolet photons, produce open-circuit voltages eclipsing 1.6 V and exhibit scalability in power generation, with active layers (10 cm2) substantially larger than those typical of demonstration organic solar cells (0.04-0.2 cm2). Integration of these solar cells with a low-cost, polymer-based electrochromic window enables intelligent management of the solar spectrum, with near-ultraviolet photons powering the regulation of visible and near-infrared photons for natural lighting and heating purposes.

  19. Cáncer de mama

    OpenAIRE

    Camino Bravo, Ivonne Aracely

    2017-01-01

    El cáncer de mama es una de las principales causas de muerte entre las mujeres de entre 45-55 años y en las de avanzada edad, incluso está por encima del cáncer de pulmón. Hay diferentes tipos de cáncer según el tamaño, las zonas afectadas y la cantidad de quiste que haya, el más grave de los casos es el CARCIROMA INFLAMATORIO que se da en el 1% de los casos, es muy agresivo y se extiende con mucha rapidez.

  20. MAMA- User Feedback and Training Summary

    Energy Technology Data Exchange (ETDEWEB)

    Porter, Reid B. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Ruggiero, Christy E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-05-21

    This document describes the current state of the MAMA (Morphological Analysis of Materials) software user identified bugs, issues, and requests for improvements. It also lists Current users and current training methods.

  1. Near-ultraviolet radiation-induced damage using an actinic reticuloid strain as a possible sensitive model

    International Nuclear Information System (INIS)

    Kralli, A.

    1987-01-01

    The introduction to this thesis consists of a review of current concepts regarding the effects of ultraviolet radiation on living cells. Actinic reticuloid, a disease condition for which a near-ultraviolet radiation cellular sensitivity has been proposed as an underlying cause, is described. The experimental work, the broad aim of which is to expand existing knowledge of the effects of near-ultraviolet radiation that may lead to cell lethality, has centred upon the irradiation of a normal human skin fibroblast strain, GM730, and a strain derived from an actinic reticuloid patient, AR6LO. Parts 1 and 2 examine the effects of the irradiation on both normal and actinic fibroblast sensitivities to a range of ultraviolet wavelengths. The next two sections include observations on the protective effect of Trolox-C, a vitamin E analogue and the sensitization resulting from the replacement of the irradiation medium by a deuterated one, using both normal and actinic reticuloid fibroblasts. The final part examines broad-band near- and far-ultraviolet radiation induced membrane damage by the use of radioactively labelled rubidium as a potassium analogue. (author)

  2. [Near ultraviolet absorption spectral properties of chromophoric dissolved organic matter in the north area of Yellow Sea].

    Science.gov (United States)

    Wang, Lin; Zhao, Dong-Zhi; Yang, Jian-Hong; Chen, Yan-Long

    2010-12-01

    Chromophoric dissolved organic matter (CDOM) near ultraviolet absorption spectra contains CDOM molecular structure, composition and other important physical and chemical information. Based on the measured data of CDOM absorption coefficient in March 2009 in the north area of Yellow Sea, the present paper analyzed near ultraviolet absorption spectral properties of CDOM. The results showed that due to the impact of near-shore terrigenous input, the composition of CDOM is quite different in the north area of Yellow Sea, and this area is a typical case II water; fitted slope with specific range of spectral band and absorption coefficient at specific band can indicate the relative size of CDOM molecular weight, correlation between spectral slope of the Sg,275-300), Sg,300-350, Sg,350-400 and Sg,250-275 and the relative size of CDOM molecular weight indicative parameter M increases in turn and the highest is up to 0.95. Correlation between a(g)(lambda) and M value increases gradually with the increase in wavelength, and the highest is up to 0.92 at 400 nm; being correlated or not between spectral slope and absorption coefficient is decided by the fitting-band wavelength range for the spectra slope and the wavelength for absorption coefficient. Correlation between Sg,275-300 and a(g)(400) is the largest, up to 0.87.

  3. Visible and near-ultraviolet spectroscopy at McMurdo Station, Antarctica. 6. Observations of BrO

    International Nuclear Information System (INIS)

    Carroll, M.A.; Solomon, S.; Schmeltekopf, A.L.; Sanders, R.W.

    1989-01-01

    Observations of the evening twilight BrO abundance over McMurdo Station, Antarctica during austral spring, 1987, are described. The observed variation of the slant column abundance with increasing solar zenith angles suggests that most of the BrO is located near 15 km. The total vertical column abundance observed during 1 week of measurements yielded an average value of 2.5 x 10 13 cm -2 , assuming the room temperature absorption cross sections measured by Cox et al. (1982). These values are consistent with BrO mixing ratios of about 5-15 parts per trillion by volume distributed from 150 to 20 mbar. If the differential absorption cross section of BrO increases by 30% at temperatures characteristic of the Antarctic lower stratosphere, as indicated by Sander and Watson (1981), then the BrO measurements reported in this paper should be decreased by 30%

  4. Enhanced Output Power of Near-Ultraviolet Light-Emitting Diodes by p-GaN Micro-Rods

    Science.gov (United States)

    Wang, Dong-Sheng; Zhang, Ke-Xiong; Liang, Hong-Wei; Song, Shi-Wei; Yang, De-Chao; Shen, Ren-Sheng; Liu, Yang; Xia, Xiao-Chuan; Luo, Ying-Min; Du, Guo-Tong

    2014-02-01

    Near-ultraviolet (UV) InGaN/AlGaN light-emitting diodes (LEDs) are grown by low-pressure metal-organic chemical vapor deposition. The scanning electronic microscope image shows that the p-GaN micro-rods are formed above the interface of p-AlGaN/p-GaN due to the rapid growth rate of p-GaN in the vertical direction. The p-GaN micro-rods greatly increase the escape probability of photons inside the LED structure. Electroluminescence intensities of the 372 nm UV LED lamps with p-GaN micro rods are 88% higher than those of the flat surface LED samples.

  5. High-power AlGaN-based near-ultraviolet light-emitting diodes grown on Si(111)

    Science.gov (United States)

    Li, Zengcheng; Liu, Legong; Huang, Yingnan; Sun, Qian; Feng, Meixin; Zhou, Yu; Zhao, Hanmin; Yang, Hui

    2017-07-01

    High-power AlGaN-based 385 nm near-ultraviolet light-emitting diodes (UVA-LEDs) grown on Si(111) substrates are reported. The threading dislocation (TD) density of AlGaN was reduced by employing an Al-composition step-graded AlN/AlGaN multilayer buffer. V-shaped pits were intentionally incorporated into the active region to screen the carriers from the nonradiative recombination centers (NRCs) around the TDs and to facilitate hole injection. The light extraction efficiency was enhanced by the surface roughening of a thin-film (TF) vertical chip structure. The as-fabricated TF-UVA-LED exhibited a light output power of 960 mW at 500 mA, corresponding to an external quantum efficiency of 59.7%.

  6. FAINT NEAR-ULTRAVIOLET/FAR-ULTRAVIOLET STANDARDS FROM SWIFT/UVOT, GALEX, AND SDSS PHOTOMETRY

    International Nuclear Information System (INIS)

    Siegel, Michael H.; Hoversten, Erik A.; Roming, Peter W. A.; Brown, Peter

    2010-01-01

    At present, the precision of deep ultraviolet photometry is somewhat limited by the dearth of faint ultraviolet standard stars. In an effort to improve this situation, we present a uniform catalog of 11 new faint (u ∼ 17) ultraviolet standard stars. High-precision photometry of these stars has been taken from the Sloan Digital Sky Survey and Galaxy Evolution Explorer archives and combined with new data from the Swift Ultraviolet Optical Telescope to provide precise photometric measures extending from the near-infrared to the far-ultraviolet. These stars were chosen because they are known to be hot (20, 000 eff < 50, 000 K) DA white dwarfs with published Sloan spectra that should be photometrically stable. This careful selection allows us to compare the combined photometry and Sloan spectroscopy to models of pure hydrogen atmospheres to both constrain the underlying properties of the white dwarfs and test the ability of white dwarf models to predict the photometric measures. We find that the photometry provides good constraints on white dwarf temperatures, which demonstrates the ability of Swift/UVOT to investigate the properties of hot luminous stars. We further find that the models reproduce the photometric measures in all 11 passbands to within their systematic uncertainties. Within the limits of our photometry, we find the standard stars to be photometrically stable. This success indicates that the models can be used to calibrate additional filters to our standard system, permitting easier comparison of photometry from heterogeneous sources. The largest source of uncertainty in the model fitting is the uncertainty in the foreground reddening curve, a problem that is especially acute in the UV.

  7. Gigabit-per-second white light-based visible light communication using near-ultraviolet laser diode and red-, green-, and blue-emitting phosphors

    KAUST Repository

    Lee, Changmin; Shen, Chao; Cozzan, Clayton; Farrell, Robert M.; Speck, James S.; Nakamura, Shuji; Ooi, Boon S.; DenBaars, Steven P.

    2017-01-01

    Data communication based on white light generated using a near-ultraviolet (NUV) laser diode (LD) pumping red-, green-, and blue-emitting (RGB) phosphors was demonstrated for the first time. A III-nitride laser diode (LD) on a semipolar (2021

  8. Broadband sensitized white light emission of g-C{sub 3}N{sub 4}/Y{sub 2}MoO{sub 6}:Eu{sup 3+} composite phosphor under near ultraviolet excitation

    Energy Technology Data Exchange (ETDEWEB)

    Han, Bing, E-mail: hanbing@zzuli.edu.cn [School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002 (China); Xue, Yongfei; Li, Pengju [School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002 (China); Zhang, Jingtao [School of Food and Bioengineering, Zhengzhou University of Light Industry, Zhengzhou 450002 (China); Zhang, Jie [School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002 (China); Shi, Hengzhen, E-mail: shihz@zzuli.edu.cn [School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002 (China)

    2015-12-15

    The g-C{sub 3}N{sub 4}/Y{sub 2}MoO{sub 6}:Eu{sup 3+} composite phosphors were synthesized and characterized by X-ray diffraction, Fourier transform-infrared spectroscopy, ultraviolet visible diffuse reflection spectra, photoluminescence spectra and luminescence decay curves. Under the excitation of 360 nm near ultraviolet light, these composite phosphors show tunable emission from blue to red region, in which white light emission can be obtained in term of appropriate quality proportion of Y{sub 2}MoO{sub 6}:Eu{sup 3+} relative to g-C{sub 3}N{sub 4}/Y{sub 2}MoO{sub 6}:Eu{sup 3+}. In addition, the emission color can be also dependent on the excitation wavelength in g-C{sub 3}N{sub 4}/Y{sub 2}MoO{sub 6}:Eu{sup 3+} composite phosphor. - Graphical abstract: Under the excitation of 360 nm near ultraviolet light, the g-C{sub 3}N{sub 4}/Y{sub 2}MoO{sub 6}:Eu{sup 3+} composite phosphors show tunable emission from blue to red region, in which white light emission can be obtained. - Highlights: • The g-C3N4/Y2MoO6:Eu{sup 3+} composite phosphors were synthesized and characterized. • White light emission was realized in the g-C3N4/Y2MoO6:Eu{sup 3+} composites under UV excitation. • A novel idea to realize the broadband sensitized white light emission in phosphors was provided.

  9. Characteristics of photocurrent generation in the near-ultraviolet region in Si quantum-dot sensitized solar cells

    International Nuclear Information System (INIS)

    Uchida, Giichiro; Sato, Muneharu; Seo, Hyunwoong; Kamataki, Kunihiro; Itagaki, Naho; Koga, Kazunori; Shiratani, Masaharu

    2013-01-01

    We have studied photocurrent generation in Si quantum-dot (QD) sensitized solar cells, where QD thin films composed of Si nanoparticles were deposited using the double multi-hollow discharge plasma chemical vapor deposition process in an SiH 4 /H 2 and CH 4 or N 2 gas mixture. The short-circuit current density of the Si QD sensitized solar cells increases by a factor of 2.5 by using Si nanoparticles prepared by irradiation of CH 4 or N 2 plasma onto the Si nanoparticle surface. We have measured incident photon-to-current conversion efficiency (IPCE) in the near-ultraviolet range using quartz-glass front panels of the QD sensitized solar cells. With decreasing the wavelength of irradiation light, IPCE gradually increases upon light irradiation in a wavelength range less than about 600 nm, and then steeply increases below 300 nm, corresponding to 2.2 times the optical band-gap energy of Si QD film. - Highlights: • We have developed on Si quantum-dot sensitized solar cells using Si particles. • Current of solar cells increases by surface-termination of Si particles. • Incident photo-to-current conversion efficiency increases below 300 nm

  10. Characteristics of photocurrent generation in the near-ultraviolet region in Si quantum-dot sensitized solar cells

    Energy Technology Data Exchange (ETDEWEB)

    Uchida, Giichiro, E-mail: uchida@ed.kyushu-u.ac.jp [Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395 (Japan); Sato, Muneharu; Seo, Hyunwoong [Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395 (Japan); Kamataki, Kunihiro [Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395 (Japan); Itagaki, Naho [Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395 (Japan); PRESTO, Japan Science and Technology Agency, Tokyo 102-0075 (Japan); Koga, Kazunori; Shiratani, Masaharu [Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395 (Japan)

    2013-10-01

    We have studied photocurrent generation in Si quantum-dot (QD) sensitized solar cells, where QD thin films composed of Si nanoparticles were deposited using the double multi-hollow discharge plasma chemical vapor deposition process in an SiH{sub 4}/H{sub 2} and CH{sub 4} or N{sub 2} gas mixture. The short-circuit current density of the Si QD sensitized solar cells increases by a factor of 2.5 by using Si nanoparticles prepared by irradiation of CH{sub 4} or N{sub 2} plasma onto the Si nanoparticle surface. We have measured incident photon-to-current conversion efficiency (IPCE) in the near-ultraviolet range using quartz-glass front panels of the QD sensitized solar cells. With decreasing the wavelength of irradiation light, IPCE gradually increases upon light irradiation in a wavelength range less than about 600 nm, and then steeply increases below 300 nm, corresponding to 2.2 times the optical band-gap energy of Si QD film. - Highlights: • We have developed on Si quantum-dot sensitized solar cells using Si particles. • Current of solar cells increases by surface-termination of Si particles. • Incident photo-to-current conversion efficiency increases below 300 nm.

  11. Characterization of Morphology using MAMA Software

    Energy Technology Data Exchange (ETDEWEB)

    Gravelle, Julie [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-08-02

    The MAMA (Morphological Analysis for Material Attribution) software was developed at the Los Alamos National Laboratory funded through the National Technical Nuclear Forensics Center in the Department of Homeland Security. The software allows images to be analysed and quantified. The largest project I worked on was to quantify images of plutonium oxides and ammonium diuranates prepared by the group with the software and provide analyses on the particles of each sample. Images were quantified through MAMA, with a color analysis, a lexicon description and powder x-ray diffraction. Through this we were able to visually see a difference between some of the syntheses. An additional project was to revise the manual for MAMA to help streamline training and provide useful tips to users to more quickly become acclimated to using the software. The third project investigated expanding the scope of MAMA and finding a statistically relevant baseline for the particulates through the analysis of maps in the software and using known measurements to compare the error associated with the software. During this internship, I worked on several different projects dealing with the MAMA software. The revision of the usermanual for the MAMA software was the first project I was able to work and collaborate on. I first learned how to use the software by getting instruction from a skilled user at the laboratory, Dan Schwartz, and by using the existing user manual and examples. After becoming accustomed to the program, I started to go over the manual to correct and change items that were not as useful or descriptive as they could have been. I also added in tips that I learned as I explored the software. The updated manual was also worked on by several others who have been developing the program. The goal of these revisions was to ensure the most concise and simple directions to the software were available to future users. By incorporating tricks and shortcuts that I discovered and picked up

  12. Salud : Cáncer de mama

    OpenAIRE

    1986-01-01

    Nadie sabe todavía la causa del cáncer de mama. Existen teorías que apuntan a los virus y la teoría de la "ruptura de inmunidad del sistema” del cáncer en general. En el caso de cáncer de mama han sido descartadas varias teorías fantasiosas (no se contrae por golpes, partos, contagio, etc.) y sólo tres o cuatro líneas de investigación parecen algo prometedoras. Causas posibles - Dieta o medio ambiente: Es posiblemente la causa más sospechosa. Hay estudios que prueban que cuando las mujeres ja...

  13. Hamartoma de la mama Breast hamartoma

    Directory of Open Access Journals (Sweden)

    Mercedes Pérez Vázquez

    2004-06-01

    Full Text Available El hamartoma de la mama o fibroadenolipoma de la mama es una lesión nodular que puede simular un fibroadenoma o un tumor phyllodes . Aparece en las mujeres en la edad media de la vida y se presenta clínicamente como un nódulo bien definido e indoloro. El diagnóstico imagenológico es el que hace pensar en éste, ya que es un tumor poco frecuente. Histológicamente cumple los requisitos generales de un hamartoma: mezcla desordenada de tejidos maduros y especializados. En la mama se puede apreciar estructura ductal y lobulillar con estroma fibroso, tejido adiposo y en ocasiones, tejido muscular liso. En este trabajo se presenta un caso de una paciente de 40 años con un hamartoma de la mama derecha que histológicamente mostraba además, tejido óseo y cartilaginosoBreast hamartoma or breast fibroadenolipoma is a nodular lesion that may resemble a fibroadenoma or phyllodes tumor. It appears in middle-aged women and it clinically presents as a well defined and painless nodule. The imaging diagnosis makes to think about it, since it is an uncommon tumor. From the histological point of view, it fulfills the general requirements of a hamartoma: disarranged combination of mature and specialized tissues. Ductal and lobular structure with fibrous stroma, fat tissue and, on occasions, smooth muscular tissue, may be observed in the breast. A case of a 40-year-old female patient with a hamartoma of the right mamma that histologically showed osteal and cartilaginous tissue is reported

  14. THE MID-INFRARED AND NEAR-ULTRAVIOLET EXCESS EMISSIONS OF QUIESCENT GALAXIES ON THE RED SEQUENCE

    International Nuclear Information System (INIS)

    Ko, Jongwan; Lee, Jong Chul; Hwang, Ho Seong; Sohn, Young-Jong

    2013-01-01

    We study the mid-infrared (IR) and near-ultraviolet (UV) excess emissions of spectroscopically selected quiescent galaxies on the optical red sequence. We use the Wide-field Infrared Survey Explorer mid-IR and Galaxy Evolution Explorer near-UV data for a spectroscopic sample of galaxies in the Sloan Digital Sky Survey Data Release 7 to study the possible connection between quiescent red-sequence galaxies with and without mid-IR/near-UV excess. Among 648 12 μm detected quiescent red-sequence galaxies without Hα emission, 26% and 55% show near-UV and mid-IR excess emissions, respectively. When we consider only bright (M r n 4000 than those without mid-IR and near-UV excess emissions. We also find that mid-IR weighted mean stellar ages of quiescent red-sequence galaxies with mid-IR excess are larger than those with near-UV excess, and smaller than those without mid-IR and near-UV excess. The environmental dependence of the fraction of quiescent red-sequence galaxies with mid-IR and near-UV excess seems strong even though the trends of quiescent red-sequence galaxies with near-UV excess differ from those with mid-IR excess. These results indicate that the recent star formation traced by near-UV (∼< 1 Gyr) and mid-IR (∼< 2 Gyr) excess is not negligible among nearby, quiescent, red, early-type galaxies. We suggest a possible evolutionary scenario of quiescent red-sequence galaxies from quiescent red-sequence galaxies with near-UV excess to those with mid-IR excess to those without near-UV and mid-IR excess.

  15. Formation of DNA single-strand breaks by near-ultraviolet and gamma-rays in normal and Bloom's syndrome skin fibroblasts

    International Nuclear Information System (INIS)

    Hirschi, M.; Netrawali, M.S.; Remsen, J.F.; Cerutti, P.A.

    1981-01-01

    The formation of single-strand breaks by near-ultraviolet light at 313 nm and by aerobic gamma-rays was compared for skin fibroblast monolayer cultures from 4 normal donors (NF) and 8 patients with Bloom's syndrome (BS) by the alkaline elution method. In 6 of 8 BS strains, the number of breaks induced by near-ultraviolet light, 2.25 kJ/sq m, at 0 degrees was comparable to NF, while elevated breakage was observed in BS strains HG 369 and HG 916. Breakage frequencies were increased substantially in 6 of 8 BS strains relative to NF when the near-ultraviolet light exposure was at 37 degrees. BS strain GM 2520 represents an exception since normal breakage frequencies were induced both at 0 degrees and 37 degrees. Aerobic gamma-rays (75 R) induced comparable numbers of single-strand breaks in BS and NF strains at 0 degrees. The breakage frequencies were reduced an average of 17% in NF when the same dose was given at 30 degrees followed by 6 min incubation. Under the same conditions, the breakage frequencies were on the average reduced by 42% relative to 0 degrees in the BS strains, indicating that they possess normal or possibly slightly increased capacities for the rejoining of gamma-ray-induced breaks

  16. Both near ultraviolet radiation and the oxidizing agent hydrogen peroxide induce a 32-kDa stress protein in normal human skin fibroblasts

    International Nuclear Information System (INIS)

    Keyse, S.M.; Tyrrell, R.M.

    1987-01-01

    We have analyzed the pattern of protein synthesis in solar near ultraviolet (334 nm, 365 nm) and near visible (405 nm) irradiated normal human skin fibroblasts. Two hours after irradiation we find that one major stress protein of approximately 32 kDa is induced in irradiated cells. This protein is not induced by ultraviolet radiation at wavelengths shorter than 334 nm and is not inducible by heat shock treatment of these cells. Although sodium arsenite, diamide, and menadione all induced a 32-kDa protein, they also induced the major heat shock proteins. In contrast, the oxidizing agent, hydrogen peroxide, induced the low molecular weight stress protein without causing induction of the major heat shock proteins. A comparison of the 32-kDa proteins induced by sodium arsenite, H 2 O 2 , and solar near ultraviolet radiation using chemical peptide mapping shows that they are closely related. These results imply that the pathways for induction of the heat shock response and the 32-kDa protein are not identical and suggest that, at least in the case of radiation and treatment with H 2 O 2 , the 32-kDa protein might be induced in response to cellular oxidative stress. This conclusion is supported by the observation that depletion of endogenous cellular glutathione prior to solar near ultraviolet irradiation lowers the fluence threshold for induction of the 32-kDa stress protein

  17. New Geometric-distortion Solution for STIS FUV-MAMA

    Science.gov (United States)

    Sohn, S. Tony

    2018-04-01

    We derived a new geometric distortion solution for the STIS FUV-MAMA detector. To do this, positions of stars in 89 FUV-MAMA observations of NGC 6681 were compared to an astrometric standard catalog created using WFC3/UVIS imaging data to derive a fourth-order polynomial solution that transforms raw (x, y) positions to geometrically- corrected (x, y) positions. When compared to astrometric catalog positions, the FUV- MAMA position measurements based on the IDCTAB showed residuals with an RMS of ∼ 30 mas in each coordinate. Using the new IDCTAB, the RMS is reduced to ∼ 4 mas, or 0.16 FUV-MAMA pixels, in each coordinate. The updated IDCTAB is now being used in the HST STIS pipeline to process all STIS FUV-MAMA images.

  18. Enhanced optical output of InGaN/GaN near-ultraviolet light-emitting diodes by localized surface plasmon of colloidal silver nanoparticles

    International Nuclear Information System (INIS)

    Hong, Sang-Hyun; Kim, Jae-Joon; Jung, Yen-Sook; Kim, Dong-Yu; Park, Seong-Ju; Kang, Jang-Won; Yim, Sang-Youp

    2015-01-01

    We report on the characteristics of localized surface plasmon (LSP)-enhanced near-ultraviolet light-emitting diodes (NUV-LEDs) fabricated by using colloidal silver (Ag) nanoparticles (NPs). Colloidal Ag NPs were deposited on the 20 nm thick p-GaN spacer layer using a spray process. The optical output power of NUV-LEDs with colloidal Ag NPs was increased by 48.7% at 20 mA compared with NUV-LEDs without colloidal Ag NPs. The enhancement was attributed to increased internal quantum efficiency caused by the resonance coupling between excitons in the multiple quantum wells and the LSPs in the Ag NPs. (paper)

  19. Staging by tomography: Lung, esophagus, mama and pleural cancer

    International Nuclear Information System (INIS)

    Gigirey, V.

    2012-01-01

    This presentation shows images of different types of cancer in the lung, esophagus, mama and pleura. The chest radiography, computed tomography, magnetic resonance and PET CT contribute to detect the morphology, size, location, metastasize, malignant and benign nodules, lymph glands.

  20. New Yorgi La Mama hakkab mängima Oksase "Puhastust" / Andrers Laasik

    Index Scriptorium Estoniae

    Laasik, Andres, 1960-2016

    2010-01-01

    Sõltumatus teatris La Mama toimub veebruaris 2011 Sofi Oksase näidendi "Puhastus" esietendus Ameerika mandril. Lavastaja Zishan Ugurlu. La Mamas mängitud eesti autorite näidenditest ja lavastustest

  1. MAMA User Guide v2.0.1

    Energy Technology Data Exchange (ETDEWEB)

    Gaschen, Brian Keith [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Bloch, Jeffrey Joseph [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Porter, Reid [Kitware, Inc., Clifton Park, NY (United States); Ruggiero, Christy E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Oyen, Diane Adele [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Schaffer, Kevin M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-07-15

    Morphological signatures of bulk SNM materials have significant promise, but these potential signatures are not fully utilized. This document describes software tools, collectively called the MAMA (Morphological Analysis for Material Attribution) software that can help provide robust and accurate quantification of morphological features in bulk material microscopy images (Optical, SEM). Although many of the specific tools are not unique to Mama, the software package has been designed specifically for nuclear material morphological analysis, and is at a point where it can be easily adapted (by Los Alamos or by collaborators) in response to new, different, or changing forensics needs. The current release of the MAMA software only includes the image quantification, descriptions, and annotation functionality. Only limited information on a sample, its pedigree, and its chemistry are recorded inside this part of the software. This was decision based on initial feedback and the fact that there are several analytical chemistry databases being developed within the community. Currently MAMA is a standalone program that can export quantification results in a basic text format that can be imported into other programs such as Excel and Access. There is also a basic report generating feature that produces HTML formatted pages of the same information. We will be working with collaborators to provide better integration of MAMA into their particular systems, databases and workflows.

  2. In vivo induction of 4-thiouridine-cytidine adducts in tRNA of E. coli B/r by near-ultraviolet radiation

    International Nuclear Information System (INIS)

    Ramabhadran, T.V.; Fossum, T.; Jagger, J.

    1976-01-01

    Near-ultraviolet (near-UV; 320 to 405 nm) irradiation of Escherichia coli B/r induced the formation in vivo of 4 Srd-Cyd adducts in transfer RNA, as evidenced by (1) fluorescence spectrum changes of tRNA extracted from irradiated cells and reduced with NaBH 4 , (2) thin-layer chromatography on cellulose of hydrolysates of trichloroacetic acid-precipitable extracts of irradiated cells, and (3) comparison of these findings with adduct formation induced by near-UV irradiation of purified mixed tRNA from E.coli. The kinetics of induction of the 4 Srd-Cyd adduct in vivo, and the near-UV fluences required, provided strong support for our earlier hypothesis that formation of these adducts was responsible for near-UV-induced growth delay in E.coli. (author)

  3. Effects of near-ultraviolet and violet radiations (313-405 NM) on DNA, RNA, and protein synthesis in E. coli B/r

    International Nuclear Information System (INIS)

    Ramabhadran, T.V.

    1975-01-01

    Fluences (21 to 32 kJ/m 2 ) of near-ultraviolet radiation that induced about a 1 hour growth delay in continuously growing cultures of E.coli B/r were found to produce complete cessation of net RNA synthesis, while the effects on protein and DNA synthesis were considerably milder. The near-UV action spectrum for this inhibition of RNA synthesis was similar to the action spectrum for growth decay in E.coli B and to the absorption spectrum of E.coli valyl transfer RNA. In addition, the fluences required for inhibition of RNA synthesis and growth delay were similar to those reported for formation of 4-thiouridine-cytidine adducts in transfer RNA. These findings suggest that the chromophore and target for near-UV-induced inhibition of both net RNA synthesis and growth in E.coli may be 4-thiouridine in transfer RNA. (author)

  4. Physiology of inactivation of microbial cells by near-ultraviolet light: mode of action and application for the enrichment of mutants of Escherichia coli and saccharomyces cerevisiae

    International Nuclear Information System (INIS)

    Peters, J.

    1976-01-01

    The mode of action of near-ultraviolet (NUV) light was studied in Escherichia coli. NUV light (maximum emission at 365 nm) caused the photodestruction of ribonucleoside diphosphate (RDP) reductase activity in vivo. Evidence was presented for a model suggesting that the loss of RDP-reductase resulted in a metabolic state analogous to that produced during starvation for thymine. Some important properties of cells irradiated by NUV light, cell death, loss of the ability to support the replication of DNA phages and a delay in the onset of cell division in sublethally irradiated cells, were accounted for in terms of photoinactivation of RDP-reductase. Conditions were described under which NUV light was an effective counterselective agent for the enrichment of mutants of Escherichia coli and Saccharomyces cerevisiae

  5. Improvement in light-output efficiency of near-ultraviolet InGaN-GaN LEDs fabricated on stripe patterned sapphire substrates

    International Nuclear Information System (INIS)

    Lee, Y.J.; Hsu, T.C.; Kuo, H.C.; Wang, S.C.; Yang, Y.L.; Yen, S.N.; Chu, Y.T.; Shen, Y.J.; Hsieh, M.H.; Jou, M.J.; Lee, B.J.

    2005-01-01

    InGaN/GaN multi-quantum wells near ultraviolet light-emitting diodes (LEDs) were fabricated on a patterned sapphire substrate (PSS) with parallel stripe along the sapphire direction by using low-pressure metal-organic chemical vapor deposition (MOCVD). The forward- and reverse-bias electrical characteristics of the stripe PSS LEDs are, respectively, similar and better than those of conventional LEDs on sapphire substrate. The output power of the epoxy package of stripe PSS LED was 20% higher than that of the conventional LEDs. The enhancement of output power is due not only to the reduction of dislocation density but also to the release of the guided light in LEDs by the geometric shape of the stripe PSS, according to the ray-tracing analysis

  6. White emitting CdS quantum dot nanoluminophores hybridized on near-ultraviolet LEDs for high-quality white light generation and tuning

    International Nuclear Information System (INIS)

    Nizamoglu, Sedat; Mutlugun, Evren; Akyuz, Ozgun; Perkgoz, Nihan Kosku; Demir, Hilmi Volkan; Liebscher, Lydia; Sapra, Sameer; Gaponik, Nikolai; Eychmueller, Alexander

    2008-01-01

    To generate white light using semiconductor nanocrystal (NC) quantum dots integrated on light emitting diodes (LEDs), multiple hybrid device parameters (emission wavelengths of the NCs and the excitation platform, order of the NCs with different sizes, amount of the different types of NCs, etc) need to be carefully designed and properly implemented. In this study, we introduce and demonstrate white LEDs based on simple device hybridization using only a single type of white emitting CdS quantum dot nanoluminophores on near-ultraviolet LEDs. Here we present their design, synthesis-growth, fabrication and characterization. With these hybrid devices, we achieve high color rendering index (>70), despite using only a single NC type. Furthermore, we conveniently tune their photometric properties including the chromaticity coordinates, correlated color temperature, and color rendering index with the number of hybridized nanoluminophores in a controlled manner

  7. Stabilization and operation of porous silicon photonic structures from near-ultraviolet to near-infrared using high-pressure water vapor annealing

    International Nuclear Information System (INIS)

    Gelloz, Bernard; Koshida, Nobuyoshi

    2010-01-01

    The effects of high-pressure water vapor annealing (HWA), electrochemical oxidation, and substrate resistivity on the properties of porous silicon Bragg mirrors and photoluminescent cavities have been investigated. The photonic structures treated by HWA show very good stability upon ageing in air whereas as-formed structures exhibit significant drifts in their optical properties. Using HWA with lightly doped porous silicon, the structure transparency is enhanced sufficiently to enable the possible photonic operation in the near-ultraviolet. However, the index contrast achievable with these structures is very low in the visible and near-infrared. Useful index contrasts in this range can be achieved with either lightly doped porous silicon treated by electrochemical oxidation and HWA or heavily doped porous silicon treated by HWA.

  8. Pollen DNA repair after treatment with the mutagens 4-nitroquinoline-1-oxide, ultraviolet and near-ultraviolet irradiation, and boron dependence of repair

    International Nuclear Information System (INIS)

    Jackson, J.F.; Linskens, H.F.; Katholieke Universiteit Nijmegen

    1979-01-01

    Irradiation of dry, mature pollen from Petuna hybrida with near-ultraviolet light from an erythemal-sunlamp gave rise to a repair-like, unscheduled DNA synthesis during the early stages of in vitro germination. Like that brought about by far-ultraviolet light from a germicidal lamp, this DNA synthesis is enhanced by hydroxyurea added to the germination medium, and reduced by photoreactivating light given after ultraviolet irradiation and before germination begins. It is concluded that pollen, often receiving considerable exposure to sunlight, has, in addition to the protection afforded by the ultraviolet filtering effects of yellow pigments, also the capacity to repair ultraviolet produced changes in DNA, by both photoreactivation and dark repair processes. (orig./AJ) [de

  9. Effects of near-ultraviolet and violet radiations (313-405 NM) on DNA, RNA, and protein synthesis in E. coli B/r. Implications for growth delay

    Energy Technology Data Exchange (ETDEWEB)

    Ramabhadran, T V [Texas Univ., Dallas (USA). Inst. for Molecular Biology

    1975-09-01

    Fluences (21 to 32 kJ/m/sup 2/) of near-ultraviolet radiation that induced about a 1 hour growth delay in continuously growing cultures of E.coli B/r were found to produce complete cessation of net RNA synthesis, while the effects on protein and DNA synthesis were considerably milder. The near-UV action spectrum for this inhibition of RNA synthesis was similar to the action spectrum for growth decay in E.coli B and to the absorption spectrum of E.coli valyl transfer RNA. In addition, the fluences required for inhibition of RNA synthesis and growth delay were similar to those reported for formation of 4-thiouridine-cytidine adducts in transfer RNA. These findings suggest that the chromophore and target for near-UV-induced inhibition of both net RNA synthesis and growth in E.coli may be 4-thiouridine in transfer RNA.

  10. In vivo induction of 4-thiouridine-cytidine adducts in tRNA of E. coli B/r by near-ultraviolet radiation

    Energy Technology Data Exchange (ETDEWEB)

    Ramabhadran, T V; Fossum, T; Jagger, J [Texas Univ., Dallas (USA)

    1976-05-01

    Near-ultraviolet (near-UV; 320 to 405 nm) irradiation of Escherichia coli B/r induced the formation in vivo of /sup 4/Srd-Cyd adducts in transfer RNA, as evidenced by (1) fluorescence spectrum changes of tRNA extracted from irradiated cells and reduced with NaBH/sub 4/, (2) thin-layer chromatography on cellulose of hydrolysates of trichloroacetic acid-precipitable extracts of irradiated cells, and (3) comparison of these findings with adduct formation induced by near-UV irradiation of purified mixed tRNA from E.coli. The kinetics of induction of the /sup 4/Srd-Cyd adduct in vivo, and the near-UV fluences required, provided strong support for our earlier hypothesis that formation of these adducts was responsible for near-UV-induced growth delay in E.coli.

  11. Retorno al trabajo tras cáncer de mama

    OpenAIRE

    López-Guillén García, Araceli; Vicente Pardo, José Manuel

    2017-01-01

    Resumen El cáncer de mama frecuentemente es causa de largos procesos de baja. La duración media de las bajas por cáncer de mama es de unos 320 días, estando entre los tres procesos principales que causan bajas de más de 365 días junto con la lumbalgia y el trastorno ansioso depresivo. Cada año se producen 26.000 casos nuevos en España de los que en su mayoría se producen en plena edad laboral. La supervivencia a los cinco años entre mujeres de 30 a 60 años es del 86%. El cáncer de mama es la ...

  12. AGULHA FINA DE MAMA E TIREOIDE

    Directory of Open Access Journals (Sweden)

    Ivone Rosini

    2014-01-01

    Full Text Available El estudio objetivó construir un protocolo de cuidados para punción aspirativa con aguja fina de mama y tiroides. Con abordaje cualitativo, tipo convergente asistencial. el estudio fue realizado en un hospital de enseñanza en el sur de Brasil, en el periodo septiembre de 2010 a abril de 2011. Participaron del estudio 88 clientes y 20 profesionales que actúan en el Servicio de Radiología. La construcción del protocolo ocurrió en tres etapas: realización de actividades educativas em sala de espera junto a los clientes para identificación de dudas y ansiedades acerca del examen, encuentros con los profesionales para evaluación y validación del protocolo y búsqueda de evidencias científicas en las fuentes de datos. La organización de lós datos ha permitido la elaboración del organigrama de atendimiento del cliente y el protocolo de cuidados, que fue organizado en actividades secuenciales incluyendo el ejecutor, actividad y justificativa científica. Los profesionales indicaron la importancia del protocolo, trayendo beneficios para la asistencia del cliente, como la agilidad, organización y humanización del atendimiento.

  13. Carcinomatosis peritoneal secundaria a carcinoma Lobulillar de mama

    OpenAIRE

    PRIEGO J,PABLO; RODRÍGUEZ V,GLORIA; REGUERO C,Mª EUGENIA; CABANAS M,JACOBO; LISA C,EDUARDO; PEROMINGO F,ROBERTO; FRESNEDA M,VIRGILIO

    2007-01-01

    Introducción: Aunque el cáncer de mama metastatiza con mayor frecuencia en ganglios linfáticos, hueso, pulmón e hígado, también se puede extender hacia el tracto gastrointestinal, peritoneo y órganos ginecológicos. Material y Método: Describimos tres casos de carcinomatosis peritoneal secundaria a la diseminación metastásica de un carcinoma lobulillar infiltrante de mama. En los tres casos el diagnóstico se hizo varios años después del descubrimiento del tumor primario y en dos de ellos se ob...

  14. Spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Hellman, Hal

    1968-01-01

    This booklet discusses spectroscopy, the study of absorption of radiation by matter, including X-ray, gamma-ray, microwave, mass spectroscopy, as well as others. Spectroscopy has produced more fundamental information to the study of the detailed structure of matter than any other tools.

  15. Spectroscopy

    CERN Document Server

    Walker, S

    1976-01-01

    The three volumes of Spectroscopy constitute the one comprehensive text available on the principles, practice and applications of spectroscopy. By giving full accounts of those spectroscopic techniques only recently introduced into student courses - such as Mössbauer spectroscopy and photoelectron spectroscopy - in addition to those techniques long recognised as being essential in chemistry teaching - sucha as e.s.r. and infrared spectroscopy - the book caters for the complete requirements of undergraduate students and at the same time provides a sound introduction to special topics for graduate students.

  16. Complex refractive indices in the near-ultraviolet spectral region of biogenic secondary organic aerosol aged with ammonia

    Energy Technology Data Exchange (ETDEWEB)

    Flores, J. M.; Washenfelder, Rebecca; Adler, Gabriela; Lee, H-J; Segev, Lior; Laskin, Julia; Laskin, Alexander; Nizkorodov, Sergey; Brown, Steven; Rudich, Yinon

    2014-05-14

    Atmospheric absorption by brown carbon aerosol may play an important role in global radiative forcing. Brown carbon arises from both primary and secondary sources, but the mechanisms and reactions for the latter are highly uncertain. One proposed mechanism is the reaction of ammonia or amino acids with carbonyl products in secondary organic aerosol (SOA). We generated SOA in situ by reacting biogenic alkenes (α-pinene, limonene, and α-humulene) with excess ozone, humidifying the resulting aerosol, and reacting the humidified aerosol with gaseous ammonia. We determined the complex refractive indices (RI) in the 360 – 420 nm range for these aerosols using broadband cavity enhanced spectroscopy (BBCES). The average real part (n) of the measured spectral range of the NH3-aged α-pinene SOA increased from n = 1.50 (±0.01) for the unreacted SOA to n = 1.57 (± 0.01) after a 1.5h exposure to 1.9 ppm NH3; whereas,the imaginary component (k) remained below k < 0.001 (± 0.002). For the limonene and α-humulene SOA the real part did not change significantly, and we observed a small change in the imaginary component of the RI. The imaginary component increased from k = 0.0 to an average k= 0.029 (± 0.021) for α-humulene SOA, and from k < 0.001 (± 0.002) to an average k = 0.032 (±0.019) for limonene SOA after a 1.5 h exposure to 1.3 and 1.9 ppm of NH3, respectively. Collected filter samples of the aged and unreacted α-pinene SOA and limonene SOA were analyzed off-line with nanospray desorption electrospray ionization high resolution mass spectrometry (nano-DESI/HR-MS), and in-situ with a Time-of-Fligh Aerosol Mass Spectrometer, confirming that the SOA reacted and that various nitrogen-containing reaction products formed. If we assume that NH3 aging reactions scale linearly with time and concentration, then a 1.5 h reaction with 1 ppm NH3 in the laboratory is equivalent to 24 h reaction with 63 ppbv NH3, indicating that the observed aerosol absorption will be limited

  17. Replicating the MamaToto Program in Rural Tanzania (IMCHA ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    This project draws on the low-cost MamaToto (mother-baby) process implemented in Uganda, where substantial gains in maternal and child health were achieved. These gains took place through an approach that strengthened services at health facilities and within communities. This project will implement and evaluate a ...

  18. METHODS ADVANCEMENT FOR MILK ANALYSIS: THE MAMA STUDY

    Science.gov (United States)

    The Methods Advancement for Milk Analysis (MAMA) study was designed by US EPA and CDC investigators to provide data to support the technological and study design needs of the proposed National Children=s Study (NCS). The NCS is a multi-Agency-sponsored study, authorized under the...

  19. Fibroadenoma en mama axilar supernumeraria; reporte de un caso

    OpenAIRE

    M. Nuvia Aliaga, Dra; V. Alvaro Ibarra, Dr.; V. Paulina Neira, Dra.; M. Luis Contreras, Dr.

    2010-01-01

    Se presenta el caso de una paciente de 41 años portadora de mamas axilares bilaterales que consulta por dolor más masa palpable en una de ellas. La paciente es sometida a resección quirúrgica que mostró que el tumor era un fibroadenoma.

  20. Fibroadenoma en mama axilar supernumeraria; reporte de un caso

    Directory of Open Access Journals (Sweden)

    M. Nuvia Aliaga, Dra

    2010-03-01

    Full Text Available Se presenta el caso de una paciente de 41 años portadora de mamas axilares bilaterales que consulta por dolor más masa palpable en una de ellas. La paciente es sometida a resección quirúrgica que mostró que el tumor era un fibroadenoma.

  1. Effects of glycerol upon the biological actions of near-ultraviolet light: spectra and concentration dependence for transforming DNA and for Escherichia coli B/r

    International Nuclear Information System (INIS)

    Peak, J.G.; Peak, M.J.; Foote, C.S.

    1982-01-01

    The concentration dependence for the protection of isolated transforming DNA and Escherichia coli by glycerol against 365-nm monochromatic near-ultraviolet light (UV) was measured. Glycerol protection saturates at a concentration of about 0.1 M for DNA and 1.0 M for E. coli. Action spectra for glycerol protection of transforming DNA (tryptophan and histidine markers) are similar to those obtained previously for diazobicyclo[2.2.2.]octane (DABCO) protection, with protection reaching a maximum near 350-nm UV and decreasing rapidly at wavelengths above and below 350 nm. However, glycerol protects against near-UV about twice as efficiently as DABCO. The action spectrum for protection of E. coli by glycerol against the lethal effects of near-UV was not the same as the spectrum for DNA since glycerol sensitized the cells, but not the DNA, at wavelengths longer than about 380 nm. A possible role of hydroxyl or other radicals was supported by the observation that benzoate also protected DNA against inactivation by 334-nm UV. (author)

  2. Gigabit-per-second white light-based visible light communication using near-ultraviolet laser diode and red-, green-, and blue-emitting phosphors

    KAUST Repository

    Lee, Changmin

    2017-07-12

    Data communication based on white light generated using a near-ultraviolet (NUV) laser diode (LD) pumping red-, green-, and blue-emitting (RGB) phosphors was demonstrated for the first time. A III-nitride laser diode (LD) on a semipolar (2021) substrate emitting at 410 nm was used for the transmitter. The measured modulation bandwidth of the LD was 1 GHz, which was limited by the avalanche photodetector. The emission from the NUV LD and the RGB phosphor combination measured a color rendering index (CRI) of 79 and correlated color temperature (CCT) of 4050 K, indicating promise of this approach for creating high quality white lighting. Using this configuration, data was successfully transmitted at a rate of more than 1 Gbps. This NUV laser-based system is expected to have lower background noise from sunlight at the LD emission wavelength than a system that uses a blue LD due to the rapid fall off in intensity of the solar spectrum in the NUV spectral region.

  3. Gigabit-per-second white light-based visible light communication using near-ultraviolet laser diode and red-, green-, and blue-emitting phosphors.

    Science.gov (United States)

    Lee, Changmin; Shen, Chao; Cozzan, Clayton; Farrell, Robert M; Speck, James S; Nakamura, Shuji; Ooi, Boon S; DenBaars, Steven P

    2017-07-24

    Data communication based on white light generated using a near-ultraviolet (NUV) laser diode (LD) pumping red-, green-, and blue-emitting (RGB) phosphors was demonstrated for the first time. A III-nitride laser diode (LD) on a semipolar (2021¯)  substrate emitting at 410 nm was used for the transmitter. The measured modulation bandwidth of the LD was 1 GHz, which was limited by the avalanche photodetector. The emission from the NUV LD and the RGB phosphor combination measured a color rendering index (CRI) of 79 and correlated color temperature (CCT) of 4050 K, indicating promise of this approach for creating high quality white lighting. Using this configuration, data was successfully transmitted at a rate of more than 1 Gbps. This NUV laser-based system is expected to have lower background noise from sunlight at the LD emission wavelength than a system that uses a blue LD due to the rapid fall off in intensity of the solar spectrum in the NUV spectral region.

  4. Influence of near-ultraviolet light enhancement and photosynthetic photon flux density during photoperiod extension on the morphology and lignin content of black spruce seedlings

    International Nuclear Information System (INIS)

    Margolis, H.; Vezina, L.P.; Bellefleur, P.

    1991-01-01

    When containerized black spruce seedlings (Picea mariana (Mill.) B.S.P.) are grown rapidly in greenhouse culture, they sometimes bend over, grow horizontally and become deformed. This phenomenon has been known to affect between 5% and 10% of a winter greenhouse crop. In this study, near-ultraviolet lamps were used to supplement the artificial light received from high-pressure sodium lamps and the effects on seedling morphology and lignin contents were examined. Neither height to diameter ratios nor lignin concentrations were significantly affected by UV radiation flux density. However, seedling biomass, height, root collar diameter, lignin content, and lignin to cellulose ratios of stems were significantly correlated with total photosynthetic photon flux density (PPFD) received during photoperiod extension. Height to diameter ratios were negatively correlated with PPFD during photoperiod enhancement because of a greater relative increase in diameter growth compared with height growth. Neither UV nor PAR flux density affected the percentage of black spruce seedlings having stem deformations greater than 30 ° from the vertical [fr

  5. Infrared to near-ultraviolet optical response for zigzag-edge silicene nanoribbons under the irradiation of an external electromagnetic field

    Science.gov (United States)

    Liao, Wenhu; Bao, Hairui; Zhang, Xincheng; Zuo, Min; Yang, Hong

    2018-01-01

    We investigate theoretically the width-dependent electronic structure and optical spectrum for intrinsic zigzag-edge silicene nanoribbons with N silicon atoms of the A and B sublattice ( N-ZSiNRs) under the irradiation of an external electromagnetic field at low temperatures. Based on the method of the tight-binding approximation, we have derived a width-dependent dispersion relation and wave function for N-ZSiNRs under the hard-wall boundary condition. By way of the dipole-transition theorem for semiconductors, both the 8- and 16-ZSiNRs have been observed to exhibit broad values (0.30-3.20 eV) of optical conductivity, dielectric function and electron energy loss spectrum in the range of infrared to near-ultraviolet. The optical spectra for 8- and 16-ZSiNRs have been manifested to be transitions between the valence and conduction bands with the same subband indices, as well as the resonances between the edge state and bulk state subbands, while the optical transitions among the different indexed bulk subbands should be forbidden owing to the non-conserved momentum. The obtained results are believed to be of importance in exploring new effects and optoelectronic applications of the silicene-based electron devices.

  6. Forcing culture of 'Black beauty'-type eggplant [Solanum melongena] 'Kurowashi' under near-ultraviolet radiation absorbing vinyl film

    International Nuclear Information System (INIS)

    Hshimoto, I.

    2006-01-01

    In a forcing culture of the 'Black Beauty'- type eggplant 'Kurowashi' (Solanum melongena var. esculentum (L.) Nees), comparisons were made in respect to growth and yield under near-ultraviolet radiation-100% absorbing vinyl film (UV100 film), and those under standard greenhouse vinyl film (standard film). Investigations were also made on the influence of the number of shoots and planting density. 1. Under UV100 film, shoot growth was the same as under standard film. The total number of flowers was somewhat increased, but the rate of harvested fruit decreased, and the yield of marketable fruit was less. On the other hand, there was little difference in the color of leaves or fruit skins; however, the green color of the shoots was lighter. 2. Under the UV100 film, when the planting system used a 180cm ridge width and a single row, the yield of marketable fruit with 2 shoots training (1,389 stocks/10a) was more than 4 shoots training (694 stocks/10a), when the numbers of shoots per unit area were the same. Moreover, with the 2 shoots training, the yield of marketable fruit for the 35cm intra-row spacing (1,587 stocks/10a) was more than the 40cm intra-row spacing (1,389 stocks/10a)

  7. The response of normal and ataxia-telangiectasia human fibroblasts to the lethal effects of far, mid and near ultraviolet radiations

    International Nuclear Information System (INIS)

    Keyse, S.M.; McAleer, M.A.; Davies, D.J.G.; Moss, S.H.

    1985-01-01

    The responses of two ataxia-telangiectasia (A-T) cell strains to the lethal effects of monochromatic far, mid and near ultraviolet radiations have been determined and compared with the responses of three normal human cell strains. The authors results confirm a previous observation that the A-T cell strain AT4BI is abnormally sensitive to the lethal effects of mid u.v. (313 nm) radiation. After far u.v. (254 nm) radiation the strain AT4BI exhibits a small but statistically significant increase in sensitivity compared to the normal strains. Of most interest, in terms of a mechanistic interpretation of the sensitivity of A-T strains, the survival responses of neither A-T strain tested to near u.v. (365 nm) radiation differed significantly from the mean response of the normal strains, although it is of interest that one normal strain (48BR) was found to be significantly more resistant to near u.v. radiation than any of the other strains tested. The results are discussed in terms of the possible induction of radiogenic lesions in DNA by ultraviolet radiations and the possible mechanisms of radiation sensitivity in ataxia-telangiectasia. (author)

  8. Photoluminescent properties of Sr2CeO4: Eu3+ and Sr2CeO4: Eu2+ phosphors suitable for near ultraviolet excitation

    International Nuclear Information System (INIS)

    Suresh, K.; Poornachandra Rao, N.V.; Murthy, K.V.R.

    2014-01-01

    Powder phosphors of 1 mol% Eu 3+ - and Eu 2+ -doped strontium cerium oxide (Sr 2 CeO 4 ) were synthesized by standard solid-state reaction method. Eu 3+ - and Eu 2+ -doped Sr 2 CeO 4 phosphors fired at 1100 ℃ for 2 h were analysed by X-ray diffraction (XRD) and photoluminescence (PL) techniques. The XRD patterns confirm that the obtained phosphors are a single phase of Sr 2 CeO 4 composed of orthorhombic structure. Room temperature PL excitation spectrum of air-heated Sr 2 CeO 4 : Eu phosphor has exhibited bands at 260, 280 and 350 nm. Whereas the excitation spectrum of Sr 2 CeO 4 : Eu phosphor heated under reducing (carbon) atmosphere exhibited single broadband range from 260 to 390 nm. The (PL) emission peaks of both the phosphors at 467 (blue), 537 (green) and 616 nm (red) generate white light under 260, 280 and 350 nm excitation wavelengths. The Commission International de l'Eclairage (CIE) colour coordinates conforms that these phosphors emitting white light. The results reveal that these phosphors are multifunctional phosphors which emit white light under these excitations that they could be used as white components for display and lamp devices and as well as possible good light-conversion phosphor LEDs under near-ultraviolet (nUV) chip. (author)

  9. Uncertainty in the use of MAMA software to measure particle morphological parameters from SEM images

    Energy Technology Data Exchange (ETDEWEB)

    Schwartz, Daniel S. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Tandon, Lav [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-06-05

    The MAMA software package developed at LANL is designed to make morphological measurements on a wide variety of digital images of objects. At LANL, we have focused on using MAMA to measure scanning electron microscope (SEM) images of particles, as this is a critical part of our forensic analysis of interdicted radiologic materials. In order to successfully use MAMA to make such measurements, we must understand the level of uncertainty involved in the process, so that we can rigorously support our quantitative conclusions.

  10. Spectroscopy

    DEFF Research Database (Denmark)

    Berg, Rolf W.

    This introductory booklet covers the basics of molecular spectroscopy, infrared and Raman methods, instrumental considerations, symmetry analysis of molecules, group theory and selection rules, as well as assignments of fundamental vibrational modes in molecules.......This introductory booklet covers the basics of molecular spectroscopy, infrared and Raman methods, instrumental considerations, symmetry analysis of molecules, group theory and selection rules, as well as assignments of fundamental vibrational modes in molecules....

  11. Detección precoz del cancer de mama, la mamografía y el autoexamen

    OpenAIRE

    Abella Calle, José; Fundación Valle de Lili

    2001-01-01

    Problemática mundial/ ¿Qué causa el cáncer de mama?/Factores de riesgo/ ¿Cómo podemos detectar precozmente el cáncer de mama?/ ¿Qué es la mamografía?/La ecografía en el estudio de las mamas/Los rayos X y el cáncer/El autoexamen de las mamas.

  12. Comparative mutagenesis and interaction between near-ultraviolet (313- to 405-nm) and far-ultraviolet (254-nm) radiation in Escherichia coli strains with differing repair capabilities

    International Nuclear Information System (INIS)

    Turner, M.A.; Webb, R.B.

    1981-01-01

    Comparative mutagenesis and possible synergistic interaction between broad-spectrum (313- to 405-nm) near-ultraviolet (black light bulb [BLB]) radiation and 254-nm radiation were studied in Escherichia coli strains WP2 (wild type), WP2s (uvrA), WP10 (recA), WP6 (polA), WP6s (polA uvrA), WP100 (uvrA recA), and WP5 (lexA). With BLB radiation, strains WP2s and WP6s demonstrated a high level of mutagenesis, whereas strains WP2, WP5, WP6, WP10, and WP100 did not demonstrate significant mutagenesis. In contrast, 254-nm radiation was mutagenic in strains WP2, WP2s, WP6, and WP6s, but strains WP5, WP10, and WP100 were not significantly mutated. The absence of mutagenesis by BLB radiation in lexA and recA strains WP10, WP5, and WP100 suggests that lex + rec + repair may play a major role in mutagenesis by both BLB and 254-nm radiation. The hypothesis that BLB radiation selectively inhibits rec + lex + repair was tested by sequential BLB-254 nm radiation. With strain WP2, a fluence of 30 J/m 2 at 254 nm induced trp + revertants at a frequency of 15 x 10 -6 . However, when 10 5 J/m 2 or more BLB radiation preceded the 254-nm exposure, no trp + revertants could be detected. A similar inhibition of 254-nm mutagenesis was observed with strain WP6 (polA). However, strains WP2s (uvrA) and WP6s (polA uvrA) showed enhanced 254-nm mutagenesis when a prior exposure to BLB radiation was given

  13. Novel green-emitting Na2CaPO4F:Eu2+ phosphors for near-ultraviolet white light-emitting diodes

    International Nuclear Information System (INIS)

    Huang, Chien-Hao; Chen, Yen-Chi; Kuo, Te-Wen; Chen, Teng-Ming

    2011-01-01

    In this study, green-emitting Na 2 CaPO 4 F:Eu 2+ phosphors were synthesized by solid-state reactions. The excitation spectra of the phosphors showed a broad hump between 250 and 450 nm; the spectra match well with the near-ultraviolet (NUV) emission spectra of light-emitting diodes (LEDs). The emission spectrum showed an intense broad emission band centered at 506 nm. White LEDs were fabricated by integrating a 390 nm NUV chip comprising blue-emitting BaMgAl 10 O 17 :Eu 2+ , green-emitting Na 2 CaPO 4 F:0.02 Eu 2+ , and red-emitting CaAlSiN 3 :Eu 2+ phosphors into a single package; the white LEDs exhibited white light with a correlated color temperature of 5540 K, a color-rendering index of 90.75, and color coordinates (0.332, 0.365) close to those of ideal white light. - Highlights: → Novel green-emitting Na 2 CaPO 4 F:Eu 2+ phosphors were synthesized by solid-state reactions in this research. → White LEDs were fabricated by integrating a 390 nm NUV chip comprising blue-emitting BaMgAl 10 O 17 :Eu 2+ , green-emitting Na 2 CaPO 4 F:0.02Eu 2+ , and red-emitting CaAlSiN 3 :Eu 2+ phosphors into a single package. → The white LEDs exhibited white light with a correlated color temperature of 5540 K, a color-rendering index of 90.75, and color coordinates (0.332, 0.365) close to those of ideal white light.

  14. CÁNCER DE MAMA Y DIETA: REVISIÓN

    OpenAIRE

    Fernández Ortega, Jairo Alejandro

    2010-01-01

    El cáncer es una de las principales causas de mortalidad y el número total de casos está aumentando en todo el mundo. En las mujeres, el cáncer de mama es el segundo cáncer más frecuente, su aparición está asociada a varios factores de riesgo: como estilos de vida poco sanos (consumo de tabaco y alcohol, dieta inadecuada, falta de actividad física) y exposición a carcinógenos. El propósito de este estudio es identificar y comprender las relaciones entre la dieta y el riesgo de cáncer de mama....

  15. Linfoma No Hodgkin Primario de Mama: Reporte de un Caso.

    Directory of Open Access Journals (Sweden)

    H. Gámez Oliva

    2016-01-01

    Full Text Available El linfoma no Hodgkin primario de la mama es una patología poco frecuente, constituye menos del 0,5% de todos los tumores mamarios malignos, debido a que carecen de características propias, tanto clínicas, mamográficas como ultrasonográficas. Es difícil el diagnóstico preoperatorio, la citología mediante BAAF tiene mejor rendimiento que el estudio con material congelado ya que este último tiende a confundirse con el carcinoma. En la actualidad se prefiere el tratamiento con quimioterapia tanto para el tratamiento local como para el regional. Presentamos el caso de un linfoma no Hodgkin primario de la mama en una paciente de 72 años.

  16. spectroscopy

    African Journals Online (AJOL)

    Aghomotsegin

    2015-10-14

    Oct 14, 2015 ... characterized by using phenotypic, API and Fourier transform infrared (FTIR) spectroscopy methods. One hundred and fifty-seven (157) strains were isolated from 13 cheese samples, and identification test was performed for 83 strains. At the end of the study, a total of 22 Lactococcus sp., 36 Enterecoccus ...

  17. Detección precoz del cáncer de mama

    OpenAIRE

    Uriarte Salterain, Andrea

    2012-01-01

    El cáncer de mama constituye un importante problema de salud en los países desarrollados por su elevada incidencia y mortalidad. El cáncer de mama es el tumor maligno más frecuente y una de las primeras causas de muerte por cáncer en las mujeres

  18. Metastização pulmonar de neoplasia da mama

    Directory of Open Access Journals (Sweden)

    Jorge Dionísio

    2002-03-01

    Full Text Available RESUMO: Para caracterizar os doentes com metastização pulmonar de neoplasia da mama, procedemos a um estudo retrospectivo dos processos de 129 doentes referenciados à Unidade de Pneumologia entre Julho de 1990 e Janeiro de 2000.Foi considerada a existência de metastização pulmonar em 89 casos.Avaliámos as manifestações clínicas apresentadas, o intervalo de tempo até ao diagnóstico de metastização pulmonar, os aspectos radiológicos, endoscópicos, as terapêuticas efectuadas e a sobrevida.O intervalo médio entre o diagnóstico da neoplasia da mama e o diagnóstico de metastização pulmonar foi de 81,9±5,7 meses. Os sintomas respiratórios foram referidos em 83,1% dos doentes. O padrão radiológico mais comum foi a presença de massas ou nódulos pulmonares (66,3%. Foram observadas 49 com sinais directos de neoplasia na broncofibroscopia. Em 47 os aspectos anatomopatológicos encontrados foram compatíveis com metastização endobrônquica de tumor da mamaO tratamento mais frequentemente utilizado após o diagnóstico de metástase pulmonar foi a quimioterapia, em 60,2% dos casos.Após o diagnóstico de metastização, a sobrevida mediana foi de 20,1 meses, com 63,4% dos doentes vivos ao fim de 1 ano.Nos doentes com carcinoma da mama e suspeita de metastização verificámos um grande intervalo livre entre o diagnóstico do tumor da mama e o aparecimento de metastização. Os sintomas respiratórios tra-duziram a grande frequência de envolvimento endobrônquico. O diagnóstico anatomopatológico de metastização pulmonar foi obtido em 52,8% dos doentes. A terapêutica mais utilizada após diagnóstico de metastização foi a quimioterapia e a sobrevida ao ano foi de 63,4%.REV PORT PNEUMOL 2002; VIII (2: ABSTRACT: We performed a retrospective study of 129 patients observed in Pneumology unit between July 1990 and January 2000 to evaluate the clinical, radiological and endoscopic patterns as well as the clinical evolution of

  19. An Introduction to MAMA (Meta-Analysis of MicroArray data) System.

    Science.gov (United States)

    Zhang, Zhe; Fenstermacher, David

    2005-01-01

    Analyzing microarray data across multiple experiments has been proven advantageous. To support this kind of analysis, we are developing a software system called MAMA (Meta-Analysis of MicroArray data). MAMA utilizes a client-server architecture with a relational database on the server-side for the storage of microarray datasets collected from various resources. The client-side is an application running on the end user's computer that allows the user to manipulate microarray data and analytical results locally. MAMA implementation will integrate several analytical methods, including meta-analysis within an open-source framework offering other developers the flexibility to plug in additional statistical algorithms.

  20. Mama na Mtoto: Barriers and enablers to gender, equity and scale ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Mama na Mtoto: Barriers and enablers to gender, equity and scale-up in Tanzania ... Call for new OWSD Fellowships for Early Career Women Scientists now open ... conference of McGill's Institute for the Study of International Development.

  1. MAMA MODEL APPROACH: ITS IMPLICATION TO COMMITMENT AND ORGANIZATIONAL CITEZENSHIP BEHAVIOR OF OPERATIONAL HOTEL EMPLOYEE

    Directory of Open Access Journals (Sweden)

    Ida Bagus Gede Udiyana

    2015-09-01

    Full Text Available The aims of this study is to find the existence of MAMA (Motivation, Ability, and Moral Awareness model to the commitment and Organizational Citizenship Behavior (OCB. The subject of the research is the five stars hotels at Nusa Dua Bali. Respondents of this study are the operational employees at the hotels who have Hindu religion with 198 samples. The method of collecting data was simple random sampling method with proportional allocation. Structural Equation Modeling (SEM analysis technique was utilized to analyze the data in this research. This research has found that MAMA model (Motivation, Ability, and Moral Awareness influences OCB. Furthermore this research has found a theory that the main variable which is causing the appearance of organizational citizenship behavior is MAMA (motivation, ability, and moral awareness as an intrinsic behavior, and commitment or organizational citizenship behavior function of MAMA, and commitment or to be formulated as OCB f. Info

  2. Comparison of the automated evaluation of phantom mama in digital and digitalized images; Comparacao da avaliacao automatizada do phantom mama em imagens digitais e digitalizadas

    Energy Technology Data Exchange (ETDEWEB)

    Santana, Priscila do Carmo, E-mail: pcs@cdtn.b [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Dept. de Engenharia Nuclear. Programa de Pos-Graduacao em Ciencias e Tecnicas Nucleares; Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Fac. de Medicina. Dept. de Propedeutica Complementar; Gomes, Danielle Soares; Oliveira, Marcio Alves; Nogueira, Maria do Socorro, E-mail: mnogue@cdtn.b [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2011-07-01

    Mammography is an essential tool for diagnosis and early detection of breast cancer if it is provided as a very good quality service. The process of evaluating the quality of radiographic images in general, and mammography in particular, can be much more accurate, practical and fast with the help of computer analysis tools. This work compare the automated methodology for the evaluation of scanned digital images the phantom mama. By applied the DIP method techniques was possible determine geometrical and radiometric images evaluated. The evaluated parameters include circular details of low contrast, contrast ratio, spatial resolution, tumor masses, optical density and background in Phantom Mama scanned and digitized images. The both results of images were evaluated. Through this comparison was possible to demonstrate that this automated methodology is presented as a promising alternative for the reduction or elimination of subjectivity in both types of images, but the Phantom Mama present insufficient parameters for spatial resolution evaluation. (author)

  3. Retorno al trabajo tras cáncer de mama

    Directory of Open Access Journals (Sweden)

    Araceli López-Guillén García

    Full Text Available Resumen El cáncer de mama frecuentemente es causa de largos procesos de baja. La duración media de las bajas por cáncer de mama es de unos 320 días, estando entre los tres procesos principales que causan bajas de más de 365 días junto con la lumbalgia y el trastorno ansioso depresivo. Cada año se producen 26.000 casos nuevos en España de los que en su mayoría se producen en plena edad laboral. La supervivencia a los cinco años entre mujeres de 30 a 60 años es del 86%. El cáncer de mama es la segunda causa de inicio de expedientes de incapacidad permanente a los doce meses, tras la lumbalgia. Sólo el 53% retomará el trabajo. El retorno al trabajo se vuelve dificultoso tanto por la intensidad y pauta espaciada de los tratamientos, como por la afectación de la calidad de vida, como por la ausencia prolongada del trabajo. Influyendo factores personales de la trabajadora, unos por ella misma, otros ligados al cáncer y su evolución, y factores laborales ligados al tipo de trabajo, riesgos, condiciones y exigencias del mismo y otros factores del mercado de trabajo; que todos ellos considerados no siempre hacen que la vuelta al trabajo sea posible. Material y método: Se han revisado hasta octubre de 2016 las siguientes bases de datos bibliográficas: SciELO, y PUBMED. Así como la Bibliografía y documentos de consulta citados en la misma. Conclusiones: Es preciso facilitar el retorno al trabajo, en especial de aquellos casos más complicados que han precisado de largas bajas pero aun así ya están curados o con una mejoría que permite trabajar. Ante el fenómeno del cáncer de mama y su impacte incapacitante, es preciso conocer el mismo con certeza por lo que se hace necesario la realización urgente del Mapa de Incapacidad en España. Para evitar controversias entre el alta médica para trabajar y la no aptitud para el trabajo debe de institucionalizarse el uso de la Ficha de Valoración Ocupacional. Ante la toma de decisiones es

  4. Growing Escherichia coli mutants deficient in riboflavin biosynthesis with non-limiting riboflavin results in sensitization to inactivation by broad-spectrum near-ultraviolet light (320-400 nm)

    International Nuclear Information System (INIS)

    Lloyd, R.E.; Rinkenberger, J.L.; Hug, B.A.; Tuveson, R.W.

    1990-01-01

    Two mutants of Escherichia coli unable to synthesize riboflavin were grown with limiting (2 μg ml -1 ) and non-limiting (10 μg ml -1 ) concentrations of riboflavin. These riboflavin auxotrophs when grown to exponential phase with non-limiting riboflavin are more sensitive to broad spectrum near-ultraviolet light (NUV, 320-400 nm) inactivation than when they are grown with limiting riboflavin. Exponential phase cells of the riboflavin auxotrophs grown with limiting riboflavin are sensitized when irradiated in saline supplemented with riboflavin. This suggests that extracellular riboflavin is important as a NUV sensitizer when intracellular levels of riboflavin are reduced. The concentration of riboflavin in crude extracts from exponentially growing cells correlates well with the sensitivity of these mutants to NUV inactivation. The level of riboflavin supplementation has little effect on the NUV sensitivity of the parental strain. (author)

  5. Comparison of the automated evaluation of phantom mama in digital and digitalized images

    International Nuclear Information System (INIS)

    Santana, Priscila do Carmo

    2011-01-01

    Mammography is an essential tool for diagnosis and early detection of breast cancer if it is provided as a very good quality service. The process of evaluating the quality of radiographic images in general, and mammography in particular, can be much more accurate, practical and fast with the help of computer analysis tools. This work compare the automated methodology for the evaluation of scanned digital images the phantom mama. By applied the DIP method techniques was possible determine geometrical and radiometric images evaluated. The evaluated parameters include circular details of low contrast, contrast ratio, spatial resolution, tumor masses, optical density and background in Phantom Mama scanned and digitized images. The both results of images were evaluated. Through this comparison was possible to demonstrate that this automated methodology is presented as a promising alternative for the reduction or elimination of subjectivity in both types of images, but the Phantom Mama present insufficient parameters for spatial resolution evaluation. (author)

  6. Cancro de mama hereditário: marcadores genéticos

    OpenAIRE

    Morais, Leonor de Sousa

    2016-01-01

    Dissertação para obtenção do grau de Mestre no Instituto Superior de Ciências da Saúde Egas Moniz O cancro de mama é atualmente uma das doenças que mais afeta o sexo feminino, a incidência tem vindo a aumentar ao longo dos anos levando a comunidade científica a aprofundar o conhecimento sobre os mecanismos que provocam a cancerização e qual o papel da genética neste processo. Há 20 anos foram identificados os genes que contribuem para o desenvolvimento do cancro de mama hereditário, como o...

  7. Cáncer de mama y ejercicio físico: estudio piloto

    OpenAIRE

    Casla Barrio, S.; Sampedro Molinuelo, J.; López Díaz de Durana, A.; Coterón López, F.J.; Barakat Carballo, R.O.

    2012-01-01

    El cáncer de mama (CM) es el más común entre las mujeres occidentales, con un alto porcentaje de supervivencia, la cual no está exenta de numerosos efectos secundarios tanto por los tratamientos como por la enfermedad, afectando a la calidad de vida de estas mujeres. El objetivo de este proyecto es conocer el efecto de un programa de ejercicio físico conducido en la calidad de vida de mujeres afectadas por cáncer de mama. Método. El programa de ejercicio físico consistió en 24 sesiones (d...

  8. Ansiedad, resiliencia e inteligencia emocional percibida en mujeres con cáncer de mama

    OpenAIRE

    García-Maroto Fernández, Sagrario

    2016-01-01

    Introducción. En el presente trabajo de investigación se ha estudiado la ansiedad, la resiliencia y la inteligencia emocional percibida en un grupo de mujeres con cáncer de mama y otro grupo de mujeres sin la enfermedad. Así mismo, se ha realizado el diseño, la aplicación y la evaluación de un programa de inteligencia emocional en un grupo de mujeres con cáncer de mama. - Contenido de la investigación. El marco teórico se centra en los constructos principales de estudio, ansiedad, resilien...

  9. Persistencia de las representaciones sociales del cáncer de mama

    OpenAIRE

    Giraldo-Mora, Clara V.

    2012-01-01

    Objetivo Comprender las representaciones sociales del cáncer de mama para un grupo de mujeres de la ciudad de Medellín, la influencia en su prevención y en las prácticas de autocuidado. Metodos Estudio cualitativo con 19 entrevistas semiestructuradas con mujeres adultas que no han tenido cáncer de mama, utilizando el criterio de máxima variación como técnica de muestreo. El análisis se orientó por la teoría fundamentada. Resultados Algunas mujeres tienen representaciones fisiológicas del cánc...

  10. Carcinoma in situ dentro de un fibroadenoma de mama: Tres casos clínicos

    OpenAIRE

    TAPIA N,GRACE; CARRASCO A,GONZALO; CAMUS A,MAURICIO; ODDÓ B,DAVID

    2008-01-01

    El fibroadenoma (FA) es un tumor frecuente de la mama que se presenta usualmente en la segunda y tercera década de la vida. Los carcinomas de la mama raramente se desarrollan dentro de un FA, existiendo alrededor de 200 casos descritos en la literatura. Nosotros reportamos la presencia de carcinoma ductal in s/fu(CDIS) al interior de un FAen tres pacientes mujeres de 31, 45 y 47 años. La presencia de microcalcificaciones en dos pacientes y la sospecha de un papiloma intraductal en la tercera,...

  11. Terapia combinada con Trastuzumab en el tratamiento del Cáncer de mama: eficacia y efectos adversos

    OpenAIRE

    Hernández Martín, María Sol

    2015-01-01

    Introducción: El cáncer de mama es el más frecuente entre la población femenina. Entre un 25-30% de los cánceres de mama son HER2-positivo. Este tipo de cáncer, se ha relacionado con una mayor agresividad clínica e histológica, mayor riesgo de recurrencia y muerte asociada al cáncer de mama. Trastuzumab, es un anticuerpo monoclonal humanizado contra este receptor. Actualmente se dispone de cuatro agentes anti-HER2 autorizados: Trastuzumab, Pertuzumab, Lapatinib y Trastuzumab...

  12. Dieta, obesidad y sedentarismo como factores de riesgo del cáncer de mama

    Directory of Open Access Journals (Sweden)

    Carlos Antonio Oliva Anaya

    Full Text Available El cáncer de mama es la primera causa de muerte por tumores malignos entre las mujeres. Una dieta no saludable, el sedentarismo y la obesidad son factores de riesgo importantes para padecer cáncer de mama, sobre todo en mujeres posmenopáusicas. El objetivo del presente trabajo es revisar los estudios epidemiológicos más relevantes sobre dieta, obesidad y cáncer de mama en las mujeres. Se estableció una estrategia de información, educación y comunicación social como apoyo a las acciones del Programa Nacional de Control de Cáncer Mamario. Para la prevención y tratamiento de la obesidad e incidencia de cáncer de mama es necesario actividades de educación nutricional, para producir cambios en los patrones y hábitos alimentarios y por consiguiente de estilos de vida, que promuevan una dieta más variada y el aumento del ejercicio físico, entre otros aspectos.

  13. Mama na Mtoto: Barriers and enablers to gender, equity and scale ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    In Tanzania, a project popularly known as “MamaToto” (mother-baby) is building local capacity to improve maternal, newborn, and child health (MNCH). It is testing a comprehensive MNCH package that builds on district-led implementation, evidence, and best practices from similar efforts in Uganda. It aims to reduce ...

  14. Cáncer de mama: Diagnóstico temprano (Breast Cancer - Early Diagnosis)

    Centers for Disease Control (CDC) Podcasts

    2011-04-28

    Este podcast responde a la pregunta de una señora del público sobre cómo saber si tiene cáncer de mama.  Created: 4/28/2011 by National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP).   Date Released: 8/1/2011.

  15. Feminine Melancholia in Gloria Naylor‟s Mama Day : A Kristevan ...

    African Journals Online (AJOL)

    This paper investigates Gloria Naylor's Mama Day with the intention of identifying the behavioural traits in the major protagonists of the narrative that establish them as victims of 'melancholia'. The paper is a psychoanalytic critical reading of the novel in which Julia Kristeva's postulations are utilized in determining the ...

  16. Cáncer de mama y exposición a hidrocarburos aromáticos

    Directory of Open Access Journals (Sweden)

    Ruth De Celis

    2006-01-01

    Full Text Available Los factores de riesgo que se han establecido para desarrollar cáncer de mama, no han podido explicar el incremento de este tipo de enfermedad en más de 50 por ciento de los casos. Debido a estas circunstancias, en los últimos 20 años se ha iniciado el estudio de factores ambientales, especialmente de las sustancias químicas que han mostrado tener actividad similar a los estrógenos (xenoestrógenos y con capacidad de estimular el tejido glandular de la mama. Los hidrocarburos aromáticos policíclicos han sido de mucho interés debido a su amplia distribución, persistencia en el ambiente por largos periodos y por su capacidad de bioacumularse en los alimentos y en el tejido adiposo de humanos y animales. Hasta la fecha, se han realizado numerosos estudios de tipo descriptivo, estudios de cohorte, epidemiológicos, de grupos seleccionados, que incluyen aspectos genéticos, alimentación, menopausia, métodos anticonceptivos y lactancia materna, en asociación con la formación de tumores de mama. En algunas de estas investigaciones se ha demostrado que los hidrocarburos guardan una estrecha relación con el cáncer de mama, en otros estudios no se ha podido sustentar esta relación. En esta revisión se realiza una compilación de los estudios más representativos de los principales tipos de hidrocarburos y su relación con el cáncer de mama

  17. Cáncer de mama, su caracterización epidemiológica

    Directory of Open Access Journals (Sweden)

    Yisel de la Caridad Ramos Águila

    2015-08-01

    Full Text Available Introducción: el cáncer de mama constituye un problema de salud, ocupando la segunda causa de muerte por cáncer en mujeres. Objetivo: describir los aspectos epidemiológicos del cáncer de mama en las mujeres del municipio Pinar del Río en el período 2012-2013. Material y método: se realizó una investigación observacional, descriptiva. El universo de estudio lo constituyeron todas las mujeres del municipio Pinar del Río con diagnóstico clínico y anátomo-patológico de cáncer de mama (N=135, atendidas en el hospital oncológico de la provincia en los años 2012 y 2013. Para la obtención de la información se aplicó una encuesta cuyas variables principales recogían datos demográficos (edad, antecedentes personales de lesiones benignas y malignas y familiares de cáncer de mama, elementos relacionados con el estado nutricional, los estilos de vida de las pacientes, así como sus características endocrino-reproductivas. El procesamiento estadístico de los datos se realizó utilizando medidas de resumen para variables cualitativas (frecuencias absolutas y porcentajes y para variables cuantitativas (promedio. Resultados: predominó la enfermedad entre los 50 y 69 años de edad. Los factores de riesgo más frecuentes fueron menarquía precoz, no ofrecimiento o menos de 4 meses de lactancia materna y uso de anticonceptivos hormonales. Conclusión: en las mujeres estudiadas se identificó, al menos, un factor de riesgo conocido para desarrollar cáncer de mama, aunque la no existencia de estos no excluye la posibilidad de padecerlo.

  18. Effects of near ultraviolet light on microorganisms

    International Nuclear Information System (INIS)

    Thomas, G.

    1977-01-01

    The deleterious action of sunlight on living organisms is caused mainly by the near-UV light (300-400 nm) of the solar spectrum. Renewed interest in this field has recently arisen from ecological concern. Publications which appeared from mid 1976 to mid 1977 are reviewed under the headings: action of sunlight: sublethal effects of near-UV radiation; inactivation and mutagenesis; sensitization and photoprotection with naturally occurring compounds; target for near-UV killing; and photoreactivation. A previous review by Jagger (Photochem. Photobiol. 23, 451-454, 1976) covers the literature up to 1976. Certain aspects are considered to deserve reviews of their own and are not included here. They are:- Vision, chloroplast photosynthesis, transmembrane transport in photosynthetic bacteria, sensitization or photoprotection by artificial dyes. (51 refs.) (author)

  19. Avaliação da eficácia de um programa de intervenção multidisciplinar em sobreviventes de cancro da mama

    OpenAIRE

    Correia, Tânia Alexandra Silva

    2015-01-01

    Com os avanços que se têm alcançado na deteção precoce e no tratamento do cancro da mama tem-se verificado um aumento no número de sobreviventes de cancro da mama. A intervenção multidisciplinar tem demonstrado a sua eficácia em sobreviventes de cancro da mama. O presente estudo pretende implementar e avaliar um programa de intervenção multidisciplinar, que integra a psicoeducação com a fisioterapia, em mulheres sobreviventes de cancro da mama. A amostra foi constituída por 19 sobreviventes d...

  20. Insônia em pacientes com câncer de mama

    OpenAIRE

    Rafihi-Ferreira,Renatha El; Soares,Maria Rita Zoéga

    2012-01-01

    A insônia é uma queixa frequente em pacientes com câncer de mama, e suas consequências podem causar impacto na qualidade de vida e no curso da doença. O objetivo deste estudo foi revisar a literatura especializada sobre a relação entre insônia e câncer de mama, abordando definição, prevalência, fatores etiológicos e as consequências da insônia no contexto da neoplasia mamária, bem como os tratamentos para insônia nessa população. A busca da literatura ocorreu nos bancos de dados Scopus, Web o...

  1. Importancia de la pesquisa del cáncer de mama

    OpenAIRE

    Dinorah García Roque; Yaiset Borges de la Oliva

    2017-01-01

    El cáncer, es uno de los mayores problemas de Salud Pública en el mundo, siendo en términos epidemiológicos, la neoplasia maligna que más se diagnostica y la mayor causa de muerte en el sexo femenino. El cáncer de mama es el tumor más frecuente en mujeres, con una incidencia anual de casi 143 000 nuevos casos en los EEUU. Estas cifras han ido incrementándose progresivamente durante los últimos 50 años. En las Américas, el cáncer de mama es el más común y la segunda causa principal de muerte p...

  2. Metástasis hipofisaria de carcinoma de mama debutando como diabetes insípida

    Directory of Open Access Journals (Sweden)

    Ana Arévalo

    2012-03-01

    Full Text Available Los tumores metastáticos que afectan a la glándula hipofisaria son hallazgos pocos comunes, presentándose en cerca del 1% de las cirugías hipofisarias. Los autores presentan el caso de una paciente mujer de 46 años que debuta con síntomas de diabetes insípida. Había sido tratada 3 años antes por un carcinoma ductal infiltrante de la mama derecha. Las imágenes de resonancia magnética cerebral mostraron una masa en la silla turca con extensión supraselar. La paciente fue sometida a resección tumoral vía transesfenoidal que demostró metástasis de carcinoma de mama.

  3. Aspectos Psicosociales Relacionados con el TEPT en Pacientes con Cáncer de Mama

    OpenAIRE

    Hernández Moreno, Fresia Paloma; Landero Hernández, René

    2015-01-01

    El objetivo del estudio fue analizar la relación del estrés, la depresión y las estrategias de afrontamiento con el Trastorno de Estrés Postraumático (TEPT) en una muestra de pacientes con cáncer de mama. Se realizó con una muestra no probabilística de 52 mujeres con cáncer de mama. Se encontró una relación entre TEPT y estrés (r= .344, p= .014), TEPT y depresión (rs=.346, p= .013). El TEPT correlacionó con evitación cognitiva (r= .437, p= .001), TEPT y desesperanza (rs= .437, p= .001) y TEPT...

  4. Afrontamiento al cáncer de mama en pacientes diagnosticadas.

    Directory of Open Access Journals (Sweden)

    Mónica Moreno Martín

    2017-03-01

    Full Text Available Introducción: El cáncer de mama representa la primera causa de muerte por cáncer en el sexo femenino y aceptar la idea de un cáncer es un asunto difícil de asimilar, por lo que el afrontamiento a esta enfermedad constituye un factor determinante en el transcurso de la misma. Objetivo: Describir el afrontamiento a la enfermedad de pacientes con cáncer de mama en el Servicio de Oncología del Hospital 10 de Octubre de la Habana.  Métodos: Se realizó un estudio observacional, descriptivo y de tipo transversal entre julio y noviembre del 2014. Se empleó el estudio de casos en profundidad. El universo estuvo constituido por 38 pacientes diagnosticadas de cáncer de mama que asistieron a la consulta de oncología. Bajo un diseño muestral no probabilístico de sujetos tipos, se seleccionaron 14 mujeres diagnosticadas de carcinoma de mama. Resultados: Las pacientes utilizaron estilos de afrontamientos centrados en la emoción y en el problema mostrando un ligero predominio en este último. Los recursos personales para el afrontamiento se caracterizaron por creencias positivas de control, creencias de optimismo y de religiosidad, acompañada también de creencias negativas de control externo y de identidad, así como la percepción salud y energía. Conclusiones: Hubo un ligero predominio al uso de estilos de afrontamiento centrados en el problema con estrategias de búsqueda de apoyo social y planificación. Las pacientes con estilos de afrontamiento centrados en las emociones utilizaron estrategias de distanciamiento y autocontrol.

  5. Rastreamento do câncer de mama: quais as tendências atuais?

    Directory of Open Access Journals (Sweden)

    Andréa Pires Souto Damin

    2012-07-01

    Full Text Available O câncer de mama é a neoplasia maligna mais frequente no mundo. No Brasil, representa a principal causa de morte por câncer em mulheres (1,2. Segundo o INCA (Instituto Nacional do Câncer são esperados 52 casos para 100.000 mulheres em 2012. Porto Alegre tem a maior incidência no país, com estimativa de 125 casos por 100.000 mulheres (2. Nesta edição da Revista do HCPA, um grupo de Minas Gerais avalia o papel da mamografia no rastreamento do câncer de mama. Até o momento, não existe prevenção primária efetiva para o câncer de mama. Como apresenta uma fase subclínica longa, variando entre 2 e 4 anos, a diminuição da mortalidade depende da detecção precoce. A sobrevida da doença em estágios iniciais pode alcançar 98% em 5 anos (1.

  6. Bienestar psicológico y cáncer de mama

    Directory of Open Access Journals (Sweden)

    Carmen Regina Victoria García Viniegras

    2007-01-01

    Full Text Available Se plantean los aspectos psicológicos más relevantes estudiados en las mujeres con cáncer de mama, tales como estilos de afrontamiento, preocupaciones, valoracionesde su enfermedad y efectos psicológicos del tratamiento. Se analizan los determinantes del bienestar psicológico de las pacientes, tales como la autoconfianza, la estabilidad emocional, la fortaleza, la afectividad positiva y la autoestima, así como el afrontamiento satisfactorio a situaciones de estrés, entre ellas al estrés de la enfermedad, y a los cambios que esta impone en el estilo de vida.Se considera en este análisis la influencia de determinadas variables sociodemográficas, así como de variables clínicas, que influyen en la calidadde vida y el bienestar de las pacientes con cáncer de mama. Se destaca la necesidad de que las estrategias de atención sanitaria a las pacientes con cáncer de mama incluyan elementos clínico-psicológicos que promuevan una mejoría del bienestar psicológico de estas mujeres.

  7. Cirurgia conservadora no câncer de mama Breast-conserving surgery for breast cancer

    Directory of Open Access Journals (Sweden)

    Daniel Guimarães Tiezzi

    2007-08-01

    Full Text Available O tratamento cirúrgico do câncer de mama sofreu expressivas mudanças nas últimas décadas. A cirurgia conservadora é o tratamento padrão para o câncer de mama em estádio inicial. Com a implementação dos programas de rastreamento e o uso emergente de tratamento sistêmico neoadjuvante, um crescente número de pacientes está sendo considerado elegível para o tratamento conservador. No entanto, uma série de fatores importantes merecem ser considerados no planejamento terapêutico destas pacientes. Esta revisão fornece uma visão geral da metodologia cirúrgica no tratamento conservador do carcinoma da mama.The surgical strategy for breast cancer treatment has changed considerably over the last decade. The breast conserving surgery (BCS is the standard treatment for early stage breast cancer nowadays. With the current population breast cancer screening programs and the emerging use of systemic neoadjuvant therapy, an increasing number of patients have been eligible to BCS. However, several specific factors must be considered for the therapeutic planning for these patients. This review provides a surgical methodology overview for the BCS in breast carcinoma.

  8. Nivel de adaptación y afrontamiento en las mujeres con cáncer de mama

    Directory of Open Access Journals (Sweden)

    Yoeli Leyva-Pescador

    2011-12-01

    Full Text Available Introducción: El cáncer de mama constituye una amenaza para la salud por ser la segunda causa de muerte en la mujer de 30 a 50 años de edad. El diagnostico, tratamiento y recuperación de las mujeres con cáncer de mama genera situaciones estresantes, la forma en cómo se afrontan influye en la adaptación. Objetivo: Conocer el nivel de adaptación y afrontamiento de las mujeres con cáncer de mama, atendidas en una institución de salud de Durango, Dgo. México. Materiales y Métodos: Estudio descriptivo cuantitativo, aplicando instrumento validado en población mexicana con un (alfa .7969, "escala de medición del proceso de afrontamiento y adaptación" de Callista Roy" en 22 mujeres con cáncer de mama. Resultados: Las mujeres con cáncer de mama se adaptan y afrontan su problema de salud, con un nivel de adaptación integrado y compensatorio pudiendodistinguir que dónde presenta dificultad es en el modo físico y fisiológico. Discusión y Conclusiones: De acuerdo al estudio "ajuste psicosocial y afrontamiento en pacientes con cáncer de mama" se encuentra una diferencia en que los participantes no experimentaron cambios a partir de la enfermedad contraria a nuestro trabajo ya que los participantes adquieren nuevas posibilidades y capacidades. La adaptación de las mujeres que han padecido cáncer de mama es un proceso dinámico, enfrentan múltiples desequilibrios que afectan sus dimensiones emocional, física, mental y social. Se pudo conocer el nivel de adaptación y afrontamiento de las mujeres con cáncer de mama comprobando que en su mayoría presentan un nivel de adaptación integrado y compensatorio. (Rev Cuid 2011; 2(2: 96- 104Palabras clave: Adaptación Psicológica, Atención de Enfermería, Cáncer de Mama. (Fuente: DeCs BIREME.

  9. Câncer de mama: relato de caso e critérios de diagnóstico

    OpenAIRE

    José Geraldo de Alencar Santos Júnior; Ivonete Aparecida Alves Sampaio; Polyana Amorim Cruz Nascimento; Ana Bruna Macêdo Matos; Sáskia Thamyles Bezerra Coutinho; Audrey Taveira de Souza Silva; José Wanderson Carvalho Noronha; João Pedro Viana Rodrigues; Thamara Caroline Cardoso Melo

    2018-01-01

    Objetivos: O objetivo do trabalho foi mostrar quais os de critérios de diagnósticos, do câncer de mama. Descrição do caso: M.S.S., 83 anos, sexo feminino, da cidade de Juazeiro do Norte/CE, solteira, aposentada por idade, nulípara, diabética e portadora de Alzheimer. Após sentir uma forte dor na mama e muita cefaleia, foi levada ao médico mastologista para uma consulta. Ao ser examinada, o médico diagnosticou um nódulo na mama direita, em seguida, pediu uma mamografia e um ultrassom mamário c...

  10. Cirugía conservadora y radical en estadíos tempranos del cáncer de mama

    OpenAIRE

    Nápoles Izquierdo, Yunexis; García Novoa, Wilfredo; Díaz Agüero, Heriberto; Báez Pupo, María Margarita

    2009-01-01

    Fundamento: El cáncer de mama es un problema de salud a escala internacional la cual ha aumentado en los últimos años las tasas de morbilidad y mortalidad, se plantea que cada quince minutos fallece una mujer por esta causa. Objetivo: Valorar los resultados de la cirugía conservadora y radical en estadíos tempranos del cáncer de mama. Método: Se realizó un estudio retrospectivo de casos y controles, la muestra estuvo constituida por treinta pacientes, a las que se le aplicó cirugía conservado...

  11. Cuidando a las mujeres con cáncer de mama: el afrontamiento como predictor de la calidad de vida

    OpenAIRE

    Bueno Ferrán, Mercedes

    2016-01-01

    El cáncer de mama es un problema de salud relevante como indican sus cifras de incidencia, prevalencia, mortalidad y coste. La consideración del cáncer como enfermedad crónica, donde el paciente experimenta cambios que afectan tanto a nivel físico como psíquico y social, requiere un enfoque integral de la atención sanitaria. El impacto del cáncer en general y del cáncer de mama en particular, se extiende a todas las esferas de la vida de las personas afectadas y sus familias, impacto que detr...

  12. Validez y seguridad del estadiamiento clínico axilar en el carcinoma infiltrante de mama

    Directory of Open Access Journals (Sweden)

    Yamilka Rodríguez Alberteri

    Full Text Available Introducción: el correcto estadiamiento clínico en el cáncer de mama contribuye al éxito de la terapéutica, debe basarse en pruebas válidas y seguras. Objetivo: determinar la validez y seguridad del estadiamiento clínico axilar del cáncer de mama. Métodos: se realizó un estudio retrospectivo de 74 y 63 pacientes con carcinoma infiltrante de la mama y cirugía como primera opción terapéutica atendida en el Instituto Nacional de Oncología y Radiobiología de La Habana y el Centro Oncológico Territorial de Holguín en el primer semestre de 2010 y 2012. Se determinaron la validez y seguridad del estadiamiento clínico axilar empleado en ambos centros de conjunto y en cada uno de manera aislada, a través del cálculo de la sensibilidad, especificidad y sus índices de error complementarios: proporción de falsos positivos y de falsos negativos, así como los valores predictivos positivo y negativo como índices de seguridad. La prueba de oro fue el diagnóstico histopatológico. Resultados: en los tres casos, la sensibilidad superior al 54 % demostró una probabilidad de los métodos empleados para encontrar positividad axilar cuando había invasión metastásica y la especificidad mayor del 71 % expresó la capacidad del estadiamiento clínico axilar para clasificar clínicamente como negativas a las axilas no afectadas. Una axila clínicamente positiva fue dos veces más probable en un paciente con invasión axilar que en uno sin metástasis a este nivel. En los tres casos los valores predictivos positivos superaron el 61 % y los negativos el 73 %. Conclusiones: el estadiamiento clínico axilar en ambos centros fue una prueba válida y segura en pacientes con carcinoma infiltrante de la mama y cirugía como primera opción terapéutica.

  13. Carcinoma medular da mama: correlação anátomo-radiológica

    OpenAIRE

    Matheus,Valéria Soares; Kestelman,Fabíola Procaci; Canella,Ellyete de Oliveira; Djahjah,Maria Célia Resende; Koch,Hilton Augusto

    2008-01-01

    OBJETIVO: Avaliar as características radiológicas do câncer de mama medular em pacientes submetidas a tratamento cirúrgico no Instituto Nacional de Câncer (INCA) - Ministério da Saúde, Rio de Janeiro, RJ, correlacionando os achados com estudo histopatológico. MATERIAIS E MÉTODOS: Foi realizado estudo descritivo retrospectivo de mulheres submetidas a tratamento cirúrgico no INCA, no período de janeiro de 1997 a dezembro de 2006, para identificação das pacientes com carcinoma medular e análise ...

  14. Protagonismo del sistema inmune en el microambiente de los tumores malignos de la mama

    OpenAIRE

    Arango Prado, María del Carmen; Rodríguez-Padilla, Cristina

    2016-01-01

    Los avances recientes en la comprensión de los mecanismos génicos y moleculares del cáncer de mama han revelado que el sistema inmune protagoniza los eventos responsables del desarrollo y la progresión del tumor. Las células de la respuesta inmune innata y adaptativa, así como diversos mediadores solubles liberados por ellas, pueden establecer una respuesta antitumoral protectora o, por el contrario, inducir eventos de inflamación crónica que favorezcan la promoción y progresión de esta enfer...

  15. Câncer de mama e sofrimento psicológico: aspectos relacionados ao feminino

    OpenAIRE

    Silva, Lucia Cecilia da

    2008-01-01

    No Brasil e no mundo a incidência do câncer de mama vem aumentando e aparecendo cada vez mais cedo na vida da mulher. O tratamento envolve mastectomia, quimioterapia e radioterapia, que, pelos seus efeitos físicos, podem comprometer em variados graus a auto-estima, a imagem corporal e a identidade feminina daquelas que recebem o diagnóstico da doença. Além disso, em nossa sociedade o câncer adquiriu significados relacionados a culpa, punição, deterioração, dor e morte, agravando o sofrimento ...

  16. Determinación de células tumorales circulantes y estudio molecular de ganglio centinela en carcinoma precoz de mama

    OpenAIRE

    Pérez Quintanilla, Almudena

    2013-01-01

    El cáncer de mama es un problema sanitario y social de primera magnitud en todo el mundo, a pesar de los avances significativos en su diagnóstico y tratamiento. La principal causa de muerte relativa al cáncer de mama es la metástasis. Esta última es el resultado de diversos procesos al final de los cuales la célula tumoral es capaz de sobrevivir en órganos a distancia. En la actualidad un gran porcentaje de las neoplasias de mama se diagnostican en estadios operables y, de ellas, sólo el 24% ...

  17. Ansiedad y depresión en mujeres con cáncer de mama en radioterapia: Prevalencia y factores asociados

    OpenAIRE

    Ornelas-Mejorada,Rosa Elena; Tufiño Tufiño,Mónica Anahí; Sánchez-Sosa,Juan José

    2011-01-01

    Someterse a radioterapia y padecer los efectos secundarios son situaciones que generan ansiedad y depresión en las mujeres con cáncer de mama. El objetivo fue evaluar la prevalencia de ansiedad y depresión que presentan las mujeres con cáncer de mama en radioterapia y analizar los efectos y las diferencias de variables clínicas y sociodemográficas sobre su malestar psicológico. Participaron 203 mujeres mexicanas con cáncer de mama en estadios 0-III. Para evaluar ansiedad y depresión se utiliz...

  18. Nuevas contribuciones en la fisioterapia del linfedema de miembro superior secundario al tratamiento del cáncer de mama

    OpenAIRE

    Canet Pérez, Cristina; Santandreu Mañó, Trinidad; Nácher Nebot, Rosa

    2011-01-01

    Resumen del póster presentado en las II Jornadas de Fisioterapia en Lesiones del Sistema Músculo-esquelético: miembro superior. Escuela Universitaria de Fisioterapia Universitat de València 28 y 29 abril de 2011 Introducción. El linfedema supone un importante problema en mujeres tratadas de cáncer de mama. Distintas revisiones han puesto...

  19. Prevention of Postpartum Depression in Low-Income Women: Development of the "Mamas y Bebes"/Mothers and Babies Course

    Science.gov (United States)

    Munoz, Ricardo F.; Le, Huynh-Nhu; Ippen, Chandra Ghosh; Diaz, Manuela A.; Urizar, Guido G., Jr.; Soto, Jose; Mendelson, Tamar; Delucchi, Kevin; Lieberman, Alicia F.

    2007-01-01

    A prenatal intervention designed to prevent the onset of major depressive episodes (MDEs) during pregnancy and postpartum was pilot tested at a public sector women's clinic. The "Mamas y Bebes"/Mothers and Babies Course is an intervention developed in Spanish and English that uses a cognitive-behavioral mood management framework, and incorporates…

  20. Comportamiento del cáncer de mama en la provincia de Cienfuegos. Quinquenio 2007-2011

    Directory of Open Access Journals (Sweden)

    Lidia Torres Ajá

    2013-09-01

    Full Text Available Fundamento: el cáncer de mama representa la primera localización y segunda causa de muerte por tumores malignos en el sexo femenino en Cuba, lo cual ha hecho que sea considerado un problema de salud y una línea priorizada de investigación por parte del Ministerio de Salud Pública. Objetivo: caracterizar el comportamiento del cáncer de mama en la provincia de Cienfuegos en el quinquenio 2007-2011. Métodos: se realizó un estudio descriptivo, prospectivo, del total de pacientes operados de cáncer de mama en la provincia de Cienfuegos durante 5 años, comprendidos desde el 1 de enero de 2007 al 31 de diciembre del 2011. Se analizaron las variables: sexo, edad, mama afectada, localización topográfica, variante histológica, etapa clínica en el momento del diagnóstico, modalidad de biopsia utilizada y técnicas quirúrgicas aplicadas. Para la recolección de los datos se confeccionó un modelo que fue aplicado a cada paciente, además de revisarse las historias clínicas y protocolos biópsicos. Resultados: existen tasas de incidencia altas en este quinquenio. Existe predominio de afectación en pacientes mayores de 50 años y el carcinoma ductal infiltrante es la modalidad más diagnosticada. El 80,6 % de los tumores se diagnosticaron en etapas tempranas. Conclusiones: el cáncer de mama constituye un problema de salud en la provincia de Cienfuegos, con altas tasas de incidencia, y con un 80,6 % de los tumores diagnosticados en etapas curables.

  1. Morbilidad del cáncer de mama en la mujer

    Directory of Open Access Journals (Sweden)

    Raúl Morales González

    1999-01-01

    Full Text Available Realizamos un estudio retroprospectivo con 50 pacientes pertenecientes al área de salud del Policlínico Comunitario No. 1 de Manzanillo, con diagnóstico citomorfológico de cáncer de mama, atendidas en la Consulta Central de Mama del Hospital "Celia Sánchez Manduley", desde enero de 1990 hasta diciembre de 1997. Se analizan algunos factores relacionados con la morbilidad del cáncer de mama en la mujer de nuestro medio. La información se procesó por medidas estadísticas como números absolutos, porcentajes y tasa de prevalencia. La enfermedad fue más frecuente en la 5ta. y 7ma. décadas de la vida; el mayor riesgo de enfermar se presentó de los 70 años, y la tasa de prevalencia del área es de 21,9 por 10 000 mujeres. Las mujeres con embarazos múltiples se asociaron con una disminución en la incidencia del cáncer mamario, el cáncer afectó más a las obesas y a las que tenían el hábito de ingerir bebidas alcohólicas.A retrospective study of 50 patients from the health area of the Community Polyclinic No. 1, in Manzanillo, was conducted. These women had a cytomorphological diagnosis of breast cancer and were attended at the Central Breast Department of the "Celia Sánchez Manduley" Hospital, from January, 1990, to December, 1997. Some factors related to morbidity from breast cancer in our environment were analyzed. The information was processed by statistical measures with absolute numbers, percentages and prevalence rate. The disease was more frequent in the 5th and 7th decades of life. Those aged 70 were at the highest risk for getting sick. The prevalence rate of the area was 21.9 per 10 000 women. Multiparous women were associated with a reduction in the incidence of breast cancer. Obese women and those with drinking habit were more affected by cancer.

  2. Plaguicidas y cáncer de mama en mujeres cordobesas

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    R. Angulo Lucena

    2001-06-01

    Full Text Available La exposición a contaminantes ambientales constituye en la actualidad un problema importante en salud pública, sobre todo con respecto al papel que dichos tóxicos juegan como carcinogenéticos. Este hecho junto con la incidencia creciente del cáncer de mama en España y de que no existe una relación clara entre esta patología y la exposición a plaguicidas, conduce a plantearnos evaluar el papel de los plaguicidas como factor de riesgo en el cáncer de mama en mujeres cordobesas.Se realiza un estudio de casos-controles en 134 mujeres que fueron sometidas a intervenciones quirúrgicas por lesiones mamarias en el Hospital Universitario Reina Sofía de Córdoba. A todas se les realiza un cuestionario, así como un estudio anatomopatológico y determinaciones en grasa mamaria de cuatro plaguicidas (HCB, HCH, p,p’DDE y Aldrín mediante cromatografía de gases.Tras el estudio anatomopatológico se estableció que 69 presentaban lesiones malignas (casos y 65 lesiones benignas (controles. Las determinaciones analíticas respecto a los 4 plaguicidas, detectan niveles elevados de p,p’DDE en todas las muestras, seguidas del HCB y Aldrín y en menores niveles y muestras se detecta el HCH.El análisis univariante detectó la edad, duración de la lactancia y niveles de Aldrín como factores de riesgo en las lesiones malignas, pero el análisis multivariante identificó los niveles del pesticida Aldrín como el factor más significativo en dichas lesiones (p < 0.001.Se establece la relación causal entre Aldrín y cáncer de mama, y se sugiere la necesidad de realizar nuevos estudios para eliminar los factores de confusión.

  3. Leiomiossarcoma de Mama: Relato de caso Leiomyosarcoma of the Breast: A Case Report

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    Juliane Oliveira de Assis

    2001-05-01

    Full Text Available Relatamos um caso de neoplasia maligna de mama com diagnóstico de leiomiossarcoma. Esta rara neoplasia tem comportamento biológico menos agressivo que outros tipos de sarcomas; por isso, chamamos atenção para o correto diagnóstico e a necessidade de graduação do neoplasma para seguimento da paciente, que, em nosso caso, com 2 anos de seguimento apresenta-se sem recidiva da doença.We report a malignant case of breast neoplasm, with the diagnosis of leiomyosarcoma. This rare neoplasm has a less aggressive biological behavior than the other types of breast sarcomas. That is the reason why we emphasize the correct diagnosis, and the necessity of graduating the neoplasm, for the patient's best follow-up. In our case, after 2 years of follow-up the patient continued with no relapse of the disease.

  4. Riesgo familiar total en familias con mujeres diagnosticadas con neoplasia de mama

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    Nancy Cecilia Charrys-Bravo

    2017-07-01

    Full Text Available Objetivo: Determinar el riesgo familiar total de las familias con mujeres diagnosticadas con cáncer de mama, que asisten a un centro de salud oncológico en la ciudad de Barranquilla. Materiales y Métodos: El estudio fue de tipo descriptivo, transversal con abordaje cuantitativo. Se utilizó el instrumento Riesgo Familiar Total RFT 5-33. El universo estuvo conformado por familias con mujeres diagnosticadas con cáncer en mama. La muestra fue de 41 familias que integraron a 154 miembros; se abordó el estudio de manera censal, y no por medio de una muestra, porque el acceso a la información de la totalidad de las familia fue viable. Resultados: Los resultados mostraron que las familias, en su mayoría, son de tipo 2. El 68 % de las pacientes categorizan sus familias como amenazadas, el 5 % como familias de alto riesgo y un 27 % de las familias con un bajo riesgo. Conclusiones: Los hallazgos encontrados en esta investigación son importantes para las familias, lo cual permitirá establecer acciones y actividades que logren orientar e implementar procesos de atención específicos con el propósito de cuidar a las familias para que se mantengan sanos en un nivel de bajo riesgo; además, desarrollar controles y seguimiento a aquellas familias que se encuentran en un riesgo alto de amenazas, mediante acciones de promoción y prevención de la enfermedad de una manera amplia. Por lo anterior, se deben emprender programas más agresivos de prevención y promoción, especialmente con las familias que asisten en busca de apoyo médico para este padecimiento; de esta forma, se podrán diagnosticar los casos de forma temprana y proceder al respectivo tratamiento.

  5. FIBROMATOSIS (DESMOID TUMOR OF THE BREAST. Fibromatosis (tumor desmoide de mama

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    Zhaneta P Boceska

    2016-03-01

    Full Text Available El tumor desmoide (fibromatosis es una entidad patológica extremadamente rara que se desarrolla de la fascia muscular y la aponeusorsis. Aunque sin potencial metastático, estos tumores son localmente muy agresivos y tienden a infiltrarse en los tejidos circundantes. Nosotros presentamos un caso de tumour desmoide de mama, que tuvo apariencias clínicas sugestivas a carcinoma. La paciente, de 56 años presentó una masa palpable de mama derecho. La citología por aspiracion con aguja fina (AGF no detectó ninguna célula maligna, por lo que se hizo una escisión local conservadora. La paciente no recibió ningun tratamiento postoperatorio adicional, y continúa viva y sana en los siguientes 18 meses. Desmoid tumor (fibromatosis is extremely rare benign pathological entity that develops from muscular fasciae and aponeuroses. Although without metastatic potential, these tumors are locally very aggressive and tend to infiltrate the surrounding tissues. We present a case of a desmoid tumor of the breast that had clinical appearance suggestive of carcinoma. The patient was 56 years old female with a previous history of surgical trauma who presented with a palpable mass in the right breast. A fine needle aspiration (FNA cytology did not reveal any malignant cells, thus conservative local excision was performed. The patient did not receive any additional postoperative treatment and was alive and free of disease after 18 months of follow-up. 

  6. Vital Signs – Derrotemos al cáncer de mama (Defeating Breast Cancer)

    Centers for Disease Control (CDC) Podcasts

    2012-11-12

    Este podcast está basado en el informe Vital Signs de los CDC de noviembre del 2012. El cáncer de mama es la segunda causa principal de muerte por cáncer en las mujeres en los Estados Unidos. Mejores pruebas de detección y tratamientos han contribuido a una disminución en las muertes por cáncer de mama; sin embargo, no todas las mujeres se han beneficiado igualmente de estos avances. Sepa cómo todos podemos ayudar a reducir las muertes por esta enfermedad.  Created: 11/12/2012 by Centers for Disease Control and Prevention (CDC).   Date Released: 11/12/2012.

  7. O surgimento do câncer de mama na visão de um grupo de mulheres mastectomizadas

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    Ana Fátima Fernandes Carvalho

    2004-01-01

    Full Text Available El objetivo de este estudio fue identificar el surgimiento del cáncer de mama según la visión de un grupo de mujeres mastectomizadas. El estudio cualitativo fue desarrollado con 16 mujeres mastectomizadas, integrantes de un grupo de auto-ayuda, a través de observaciones y entrevistas. Las mujeres atribuyeron su cáncer a: sentimientos reprimidos, herencia familiar, estrés, trauma físico, hábitos alimentarios y la falta de cuidado con su propio cuerpo. Concluimos que las mujeres se mostraron más claras sobre la causa del surgimiento de su enfermedad, cuando indican los principales factores determinantes del cáncer de mama

  8. Desarrollo investigativo en salud sexual de mujeres con cáncer de mama: una revisión integrativa

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    Luz Stella Bueno Robles

    2016-01-01

    Full Text Available Objetivo: Caracterizar la producción científica relacionada con la salud sexual en mujeres con cáncer de mama. Metodología: Revisión integrativa. Se realizó una búsqueda en las bases de datos Scopus, Medline, LILACS y SciELO, así como búsquedas secundarias en revistas científicas. Se encontraron 85 artículos organizados y caracterizados por año, idioma y continente; edad promedio y tipos de tratamiento; metodología, perspectiva, enfoque, diseño, perspectiva disciplinar y tendencia temática. Resultados: La temática reportó mayor producción de conocimiento en los últimos 10 años. La tendencia de investigación se orienta hacia tres categorías: Salud sexual y cáncer de mama; Salud sexual en la mujer y tratamientos del cáncer de mama; y Salud sexual y relaciones de pareja. Conclusiones: La salud sexual en mujeres con cáncer de mama es un aspecto importante en la calidad de vida, que continuamente se ve alterada como resultado de la enfermedad y los efectos adversos de los tratamientos. Esta condición no sólo aqueja a la persona enferma, sino también a su pareja, por lo que se requiere del desarrollo de líneas de acción que permitan dar una atención integral a las mujeres con esta enfermedad.

  9. Entrevista motivacional no suporte social de cuidadores de pacientes com câncer de mama em quimioterapia

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    Carla Monique Lopes Mourão

    2017-12-01

    Full Text Available RESUMO Objetivo: Avaliar os efeitos da entrevista motivacional para mudança de comportamento de suporte social junto a cuidadores de pacientes com câncer de mama em quimioterapia. Método: Estudo quase experimental, realizado com mulheres em quimioterapia para câncer de mama e com os cuidadores das respectivas mulheres entrevistadas. A intervenção foi a Entrevista Motivacional Breve, aplicada aos cuidadores indicados pelas pacientes em quatro sessões individuais, com intervalos semanais e duração de 30 minutos cada. O comportamento de suporte social foi avaliado pelas mulheres antes e depois da intervenção pela Escala de Suporte Social. Resultados: Participaram do estudo 18 mulheres e 18 cuidadores. O suporte social das mulheres se mostrou elevado tanto para a dimensão emocional quanto para a instrumental da Escala de Suporte Social, após intervenção utilizada com os cuidadores pela Entrevista Motivacional Breve. Os achados contribuem para a prática clínica de diversas categorias profissionais, na utilização de estratégias de intervenção de baixo custo para melhoria da qualidade de vida durante e após o tratamento de mulheres com câncer de mama. Conclusão: A intervenção utilizada promoveu de forma positiva a mudança comportamental, melhorando o suporte social prestado pelos cuidadores às pacientes com câncer de mama e em realização de quimioterapia.

  10. Aleitamento materno como fator de proteção para o câncer de mama

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    Clícia Valim Côrtes Gradim

    2011-01-01

    Full Text Available Estudio cuantitativo, transversal que tuvo como objetivo verificar si las mujeres que amamantaron relacionan este acto como un factor de protección para el cáncer de mama. Se aplicó un formulario a 200 mujeres que amamantaron, y solían frecuentar una clínica municipal en Alfenas-Míi, entre mayo y julio de 2008. El análisis de los datos se basó en la estadística descriptiva yen el test chí cuadrado, con nivel de sígntñcancta de 5%. El índice de asociación entre la lactancia materna y el cáncer de mama fue de 3S%. La escolaridad estuvo significativamente relacionada al conocimiento de la lactancia materna no exclusiva como un factor de protección para esa neoplasia mamaria (p <0,001. Los profesionales de la salud deben alentar y concíentízar a las mujeres acerca de las ventajas de la lactancia materna, tanto sobre los beneficios para el niño como para la madre, pues la protege del cáncer de mama.

  11. Melt analysis of mismatch amplification mutation assays (Melt-MAMA: a functional study of a cost-effective SNP genotyping assay in bacterial models.

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    Dawn N Birdsell

    Full Text Available Single nucleotide polymorphisms (SNPs are abundant in genomes of all species and biologically informative markers extensively used across broad scientific disciplines. Newly identified SNP markers are publicly available at an ever-increasing rate due to advancements in sequencing technologies. Efficient, cost-effective SNP genotyping methods to screen sample populations are in great demand in well-equipped laboratories, but also in developing world situations. Dual Probe TaqMan assays are robust but can be cost-prohibitive and require specialized equipment. The Mismatch Amplification Mutation Assay, coupled with melt analysis (Melt-MAMA, is flexible, efficient and cost-effective. However, Melt-MAMA traditionally suffers from high rates of assay design failures and knowledge gaps on assay robustness and sensitivity. In this study, we identified strategies that improved the success of Melt-MAMA. We examined the performance of 185 Melt-MAMAs across eight different pathogens using various optimization parameters. We evaluated the effects of genome size and %GC content on assay development. When used collectively, specific strategies markedly improved the rate of successful assays at the first design attempt from ~50% to ~80%. We observed that Melt-MAMA accurately genotypes across a broad DNA range (~100 ng to ~0.1 pg. Genomic size and %GC content influence the rate of successful assay design in an independent manner. Finally, we demonstrated the versatility of these assays by the creation of a duplex Melt-MAMA real-time PCR (two SNPs and conversion to a size-based genotyping system, which uses agarose gel electrophoresis. Melt-MAMA is comparable to Dual Probe TaqMan assays in terms of design success rate and accuracy. Although sensitivity is less robust than Dual Probe TaqMan assays, Melt-MAMA is superior in terms of cost-effectiveness, speed of development and versatility. We detail the parameters most important for the successful application of

  12. Carcinoma de mama: novos conceitos na classificação Breast cancer: new concepts in classification

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    Daniella Serafin Couto Vieira

    2008-01-01

    Full Text Available O carcinoma de mama é a neoplasia maligna mais comum em mulheres. Estudos moleculares do carcinoma de mama, baseados na identificação do perfil de expressão gênica por meio do cDNA microarray, permitiram definir pelo menos cinco sub-grupos distintos: luminal A, luminal B, superexpressão do HER2, basal e normal breast-like. A técnica de tissue microarray (TMA, descrita pela primeira vez em 1998, permitiu estudar, em várias amostras de carcinoma, os perfis de expressão protéica de diferentes neoplasias. No carcinoma de mama, os TMAs têm sido utilizados para validar os achados dos estudos preliminares, identificando, desta forma, os novos subtipos fenotípicos do carcinoma de mama. Dentre os subtipos classicamente descritos, o grupo basal constitui um dos mais intrigantes subtipos tumorais e é freqüentemente associado com pior prognóstico e ausência de alvos terapêuticos definidos. A classificação histopatológica do carcinoma de mama tem pobre valor preditivo. Portanto, a associação entre o diagnóstico histológico com técnicas moleculares nos laboratórios de anatomia patológica, por meio do estudo imunoistoquímico, pode determinar o perfil molecular do carcinoma de mama, buscando melhorar a resposta terapêutica. Este estudo visou resumir os mais recentes conhecimentos em que se baseiam os novos conceitos da classificação do carcinoma de mama.Breast cancer is the principal cause of death from cancer in women. Molecular studies of breast cancer, based in the identification of the molecular profiling techniques through cDNA microarray, had allowed defining at least five distinct sub-group: luminal A, luminal B, HER-2-overexpression, basal and " normal" type breast-like. The technique of tissue microarrays (TMA, described for the first time in 1998, allows to study, in some samples of breast cancer, distinguished by differences in their gene expression patterns, which provide a distinctive molecular portrait for each tumor

  13. Efecto quimioprotector de Bidens pilosa en el cáncer de mama inducido en ratas

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    Jorge Arroyo

    2010-07-01

    Full Text Available Introducción: Bidens pilosa L es una planta perteneciente a la familia Asteraceae, conocida en Perú como amor seco y cadillo. Se le atribuye efectos antiinflamatorio, diurético y hepatoprotector. Objetivos: Determinar el efecto quimioprotector de los compuestos fenólicos y flavonoides extraídos de la planta entera de Bidens pilosa sobre el cáncer de mama inducido en ratas con 7,12-dimetilbenz antraceno (DMBA. Protección medida en base a detención del desarrollo de adenocarcinoma y disminución de marcadores de estrés oxidativo. Diseño: Experimental. Institución: Laboratorio de Farmacología, Facultad de Medicina, Universidad Nacional Mayor de San Marcos. Material biológico: Planta entera de Bidens pilosa L recolectada en La Libertad, Perú, y ratas hembras Holtzmann. Intervenciones: Se obtuvo los compuestos fenólicos y flavonoides por cromatografía en columna rápida, con solventes de polaridad creciente. Mediante cromatografía en capa fina y reactivos de desplazamiento, se aisló cuatro compuestos fenólicos. Los tumores de mama fueron inducidos con DMBA administrado oralmente. Se formó cuatro grupos de seis ratas cada uno: grupo control, grupo con tóxico inductor (TI DMBA del cáncer, grupos con TI más tratamiento de extracto etanólico 300 mg/kg, y grupo con TI más tratamiento de extracto metanólica 300 mg/kg. Principales medidas de resultados: Disminución del desarrollo de adenocarcinoma mamario. Resultados: Se logró disminución significativa del desarrollo de adenocarcinoma mamario con los tratamientos de extracto metanólico y etanólico, siendo mejor con la fracción metanólica; el marcador de estrés oxidativo disminuyó en los grupos que recibieron tratamiento con la planta, siendo significativo con la fracción metanólica; hubo menor número de micronúcleos (genotoxicidad en los animales que recibieron tratamiento. Conclusiones: En condiciones experimentales, el extracto y fracción metanólica de Bidens

  14. FACTORES PRONOSTICOS DEL CANCER DE MAMA Y ONCOGEN HER2/NEU

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    F.J. Martín Gil

    2006-08-01

    Full Text Available ABSTRACT: PRONOSTIC FACTORS OF BREAST CANCER AND HER2/NEUThe breast cancer constitutes the main cause of death by cancer in women of our country. In spite of the efforts directed in campaigns of precocious detection, the incidence continues increasing in a 1% approximately per year and the rate of mortality stay constant. Therefore it is of great importance to consolidate efforts directed towards the development and use of therapeutic and diagnostic methods. The development of neoplasia is directly related to successive genetic mutations in which cellular oncogenes are involved.It is known that in case of breast cancer the Her2/neu oncogene (Human epidermal growth receptor-2 factor is amplified and/or overexpressed in approximately a 30% of the cases. The knowledge of a positive result for Her2/neu overexpression has an important value in prognosis as it is associated to a greater aggressiveness of the disease. Also, this gene can be an answer marker to certain treatments like trastuzumab. RESUMEN:El cáncer de mama (CM constituye la principal causa de muerte por cáncer en mujeres de nuestro país. A pesar de los esfuerzos dirigidos hacia las campañas de detección precoz, la incidencia sigue aumentando aproximadamente en un 1% por año y la tasa de mortalidad sigue manteniéndose constante.Es por ello de gran importancia aunar esfuerzos dirigidos al desarrollo y utilización de métodos diagnósticos y terapéuticos. El desarrollo de una neoplasia está directamente relacionado con mutaciones genéticas sucesivas en las que están involucrados oncogenes celulares.En el caso del cáncer de mama se sabe que el encogen Her2/neu (Human epidermal growth factor receptor-2 está amplificado y/o sobreexpresado en aproximadamente un 30% de los casos. El conocimiento de la positividad del mismo tiene un importante valor pronóstico asociándose a una mayor agresividad de la enfermedad. Así mismo dicho gen puede ser un marcador predictivo de respuesta

  15. Aislamiento de Staphylococcus aureus meticilino resistente en abscesos de mama en una Maternidad Pública

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    Cristina Boccaccio

    2014-06-01

    Full Text Available La mastitis y los abscesos de mama representan un factor de riesgo para el abandono de la lactancia. Se incluyen dentro de las infecciones de piel y partes blandas y comparten los cambios epidemiológicos que llevan a replantear el tratamiento empírico inicial. Se estudiaron 137 casos de abscesos de mama desde enero de 2007 a diciembre de 2011. Se analizó incidencia, días postparto, factores de riesgo, datos microbiológicos y tratamiento antibiótico. Desde 2007a 2011 se observó un constante aumento de la incidencia de casos: 0.19 vs. 0.84% (p < 0.001. Días postparto de aparición del absceso 41.9 ± 35.8 días (Media ± DE, primiparidad 70.6%. Los factores de riesgo más frecuentemente encontrados fueron grietas del pezón e ingurgitación mamaria (95%. Staphylococcus aureus (SA fue el responsable de 82.3 a 95.0% de los abscesos según los años; la resistencia a oxacilina de las cepas de SA superó el 60%. Las cepas aisladas de SA meticilino resistentes (SAMR fueron sensibles a eritromicina clindamicina, gentamicina, rifampicina, ciprofloxacina y trimetroprima-sulfametoxasol en diferentes porcentajes según los años. Requirieron drenaje el 100% de los casos; en 60% el tratamiento empírico inicial fue inadecuado. Continuaron amamantando 90% de las madres. Estos datos enfatizan la necesidad de prevenir los factores de riesgo: grietas del pezón e ingurgitación mamaria. La modificación del tratamiento antibiótico inicial requiere el estudio bacteriológico de las infecciones de piel y partes blandas dado que la prevalencia de SAMR no es uniforme y varía en diferentes poblaciones y ubicaciones geográficas.

  16. Avaliação do tempo para acesso ao tratamento do câncer de mama no Distrito Federal

    OpenAIRE

    Barros, Ângela Ferreira [UNESP

    2011-01-01

    A alta taxa de mortalidade do câncer de mama em países em desenvolvimento é associada à falta de programas de detecção precoce, ao retardo no diagnóstico e tratamento, bem como às dificuldades para acesso aos serviços de saúde. O objetivo desse estudo foi identificar artigos que associaram o retardo no diagnóstico e tratamento com a evolução do câncer de mama, verificar os fatores associados ao atraso e apontar sugestões para minimizar o atraso no diagnóstico e tratamento do câncer de mama. F...

  17. Prevalencia de depresión en pacientes con cáncer de mama. Revisión de la literatura

    OpenAIRE

    Sagardoy Muniesa, L.; Miguel Romeo, C.; Sebastián Meneses, N.

    2013-01-01

    1.- INTRODUCCIÓN: La depresión es una sintomatología muy frecuente en los pacientes diagnosticados con cáncer de mama y su tratamiento. Se plantea una revisión de la literatura para analizar la prevalencia de la depresión en personas con cáncer de mama. 2.- METODOS: Revisión sistemática. Bases de datos: EMBASE (1999-2010) PUBMED (1981-2010). Se incluyeron los artículos que relacionaban prevalencia y depresión en cáncer de mama. 3.- RESULTADOS: Se localizaron 49 estudios; sólo 12 cumplieron lo...

  18. Fatores genéticos associados ao câncer de mama masculino: uma revisão de literatura

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    Nathalia Maria Tomaz Silveira

    2016-10-01

    Full Text Available O câncer de mama masculino é um quadro neoplásico raro, abrange 1% dos casos de câncer de mama no mundo todo, 1% dos tumores malignos em homens e apresenta incidência anual de 1 por 100.000. Reuniram-se informações acerca da atualidade de estudos relacionados ao caráter genético na patologia abordada, cujo objetivo foi analisar aspectos da predisposição e associação, utilizando 15 artigos originais indexados no período entre janeiro de 2011 a fevereiro de 2016, escritos em inglês e espanhol, com delineamento experimental ou observacional, utilizando os descritores câncer de mama masculino, tratamento do câncer, câncer de mama e fator genético do câncer de mama, assim como suas traduções em inglês male breast cancer, cancer treatment, breast cancer e genetic factors. Discutiu-se principalmente a influência genética na ocorrência do câncer de mama masculino, como alterações em genes supressores BRCA, relações com o ponto de checagem CHECK2, histórico familiar e ligações com a síndrome de Klinefelter, entre outros fatores. Aspectos ambientais também são sugeridos por parte da literatura na manifestação clínica da neoplasia, porém com menores ênfases conclusivas. Apesar da literatura sobre o tema ainda necessitar de crescimento e aprofundamento, observaram-se reafirmações científicas sobre a importância da influência genética, sobretudo do BRCA 2, além de confirmações quanto a multifatoriedade da neoplasia.

  19. Personalidade e câncer de mama e do aparelho digestório

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    Márcia Fernandes Bandeira

    Full Text Available Como a literatura indica influência de características de personalidade na formação do câncer, este estudo objetivou verificar se elas seriam gerais ou variariam segundo o tipo de neoplasia. Foram aplicadas entrevistas psicológicas e forma reduzida do TAT em 15 mulheres entre 41 e 60 anos, distribuídas em um grupo de 10 com câncer de mama (CM e outro de cinco com câncer do aparelho digestório (CAD. Resultados revelaram predominância de organizações de personalidade borderline no grupo CM e neurótica no CAD. Ambos os grupos apresentaram perdas e frustrações antecedendo a doença, clivagem do ego entre razão e afeto, conflitos entre pulsões agressivas e sexuais e com figura materna e predomínio do pensamento operatório, indicando dificuldade de representação psíquica das pulsões. Foram realizadas considerações relativas à importância da psicoterapia com pacientes neoplásicos, auxiliando na construção e fortalecimento da capacidade de simbolizar.

  20. Ansiedad y calidad de vida en la mujer con cáncer de mama

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    Eustolia Velázquez Leyva

    2015-12-01

    Full Text Available La ansiedad surge en la mujer con Cáncer de Mama (CaMa desde el momento del diagnóstico, por tal motivo el presente estudio tiene como objetivo medir la relación de la ansiedad como factor estresor intrapersonal en la calidad de vida de la mujer con CaMa, en un hospital de Sonora. Es un estudio cuantitativo, correlacional y no experimental; el muestreo es no probabilístico, con una significancia de 0.05 y poder de 0.80, muestra de 65 individuos. Se empleó estadística descriptiva e inferencial, se aplicó la prueba de correlación de Pearson, se utilizó la escala de Hamilton para medir la ansiedad, y el WHOQOL-BREF para determinar la calidad de vida. La edad media fue 52.43 años y la ansiedad tuvo una relación negativa significativa (r = -0.270, p < 0.01 con la calidad de vida. Se concluye que es importante desarrollar intervenciones que promuevan una mejor calidad de vida y disminuyan la ansiedad en las mujeres con CaMa.

  1. Enfermeiras no atendimento ambulatorial a mulheres com feridas neoplásicas malignas nas mamas

    Directory of Open Access Journals (Sweden)

    Flávia Firmino

    2014-01-01

    Full Text Available Los objetivos de esta investigación fueron analizar el relato de enfermeros que realizan curas en heridas neoplásicas de mujeres afectadas por cáncer de mama, e trazar las contribuciones a la práctica de la atención de enfermería. Investigación cualitativa, llevada a cabo en noviembre de 2010, con entrevistas semiestructuradas y análisis temático, con cinco enfermeras que actuaban en área ambulatoria de hospital público del Rio de janeiro, Brasil, especializado en tratamiento oncológico. Fueron desarrolladas categorías que correspondieron a la práctica de la enfermería ambulatoria; herida neoplásica; y notas para la atención de enfermería. Hay la necesidad de conocimientos específicos en enfermería oncológica, participación profesional, habilidad técnica y autonomía, equipos de discusión terapéutica y atención clínica en interfaz con enfoque paliativo y trabajo colaborativo en equipo.

  2. Farmacocinética, metabolismo e excreção renal da doxorrubicina em pacientes com câncer de mama

    OpenAIRE

    Leandro Francisco Pippa

    2016-01-01

    O presente estudo visa descrever a farmacocinética, o metabolismo e a excreção renal da doxorrubicina, uma antraciclina utilizada no tratamento do câncer de mama. A doxorrubicina é biotransformada a doxorrubicinol pelas enzimas carbonil redutase 1 e 3 e aldo-ceto redutase. Foram investigadas 12 pacientes portadoras de câncer de mama no primeiro ciclo de tratamento adjuvante ou neoadjuvante com doxorrubicina (60 mg/m2) administrada por infusão intravenosa durante 30 min. As amostras seriadas d...

  3. Supervivencia al cáncer de mama: Una historia personal (Breast Cancer Survivorship—A Personal Story)

    Centers for Disease Control (CDC) Podcasts

    2016-10-18

    Pam Bryant, una sobreviviente de cáncer de mama, habla sobre su viaje personal y cómo impactó su vida el recibir un diagnóstico de cáncer de mama antes de los 45 años. .  Created: 10/18/2016 by National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP), Division of Cancer Prevention and Control (DCPC).   Date Released: 10/18/2016.

  4. CÂNCER DE MAMA: ESTIMATIVA DA PREVALÊNCIA DE ANSIEDADE E DEPRESSÃO EM PACIENTES EM TRATAMENTO AMBULATORIAL

    OpenAIRE

    Ferreira, Andreia Silva; Bicalho, Bruna Pereira; Oda, Julie Massayo Maeda; Duarte, Sebastião Junior Henrique; Machado, Richardson Miranda

    2016-01-01

    A ansiedade e a depressão são doenças psicoemocionais que afetam grande parte das mulheres acometidas pelo câncer de mama. Pouco se sabe sobre os meios de identificação precoce, constituindo-se em desafios à equipe multiprofissional da saúde a integralidade do cuidado à vítima dessa doença. O objetivo deste estudo foi identificar a prevalência da ansiedade e depressão em mulheres em tratamento ambulatorial para o câncer de mama. Estudo descritivo transversal, realizado com 138 mulheres em tra...

  5. Conceito de risco para câncer de mama em pesquisas de enfermagem Concepto de riesgo para cáncer de mama en investigaciones de enfermería Concept of risk for breast cancer in nursing research

    Directory of Open Access Journals (Sweden)

    Anna Paula Sousa da Silva

    2011-01-01

    Full Text Available OBJETIVO: Analisar o conceito de risco em pesquisas sobre câncer de mama na área da Enfermagem. MÉTODOS: O estudo seguiu a metodologia de análise conceitual proposta por Walker e Avant. e foi desenvolvido por meio de consulta às bases de dados SCOPUS e CINAHL. A seleção foi realizada pelos critérios de inclusão e exclusão, constituindo uma amostra de 12 artigos. RESULTADOS: Foram identificados os principais usos do conceito de risco, atributos definidores, antecedentes e consequentes do conceito. CONCLUSÃO: A avaliação do conceito de risco para câncer de mama possibilitou uma compreensão mais ampla do fenômeno, com destaque para a detecção precoce da doença e a vulnerabilidade de pacientes com risco de desenvolver a neoplasia.OBJETIVO: Analizar el concepto de riesgo en investigaciones sobre cáncer de mama en el área de la Enfermería. MÉTODOS: El estudio siguió la metodología de análisis conceptual propuesta por Walker y Avant, desarrollado por medio de consulta a las bases de datos SCOPUS y CINAHL. La selección fue realizada por los criterios de inclusión y exclusión, constituindo una muestra de 12 artículos. RESULTADOS: Fueron identificados los principales usos del concepto de riesgo, atributos definidores, antecedentes y consecuentes del concepto. CONCLUSIÓN: La evaluación del concepto de riesgo para cáncer de mama posibilitó una comprensión más amplia del fenómeno, especialmente para la detección precoz de la enfermedad y la vulnerabilidad de pacientes con riesgo de desarrollar la neoplasia.OBJECTIVE: To analyze the concept of risk for breast cancer in research in the nursing discipline. METHODS: The study followed the methodology of conceptual analysis proposed by Walker and Avant, and was conducted using the databases SCOPUS and CINAHL. The selection was made using exclusionary and inclusionary criteria, resulting in a sample of 12 articles. RESULTS: We identified the principle uses of the concept of

  6. Electron spectroscopy

    International Nuclear Information System (INIS)

    Hegde, M.S.

    1979-01-01

    An introduction to the various techniques in electron spectroscopy is presented. These techniques include: (1) UV Photoelectron spectroscopy, (2) X-ray Photoelectron spectroscopy, (3) Auger electron spectroscopy, (4) Electron energy loss spectroscopy, (5) Penning ionization spectroscopy and (6) Ion neutralization spectroscopy. The radiations used in each technique, the basis of the technique and the special information obtained in structure determination in atoms and molecules by each technique are summarised. (A.K.)

  7. Cáncer de mama triple negativo: una enfermedad de difícil diagnóstico y tratamiento

    Directory of Open Access Journals (Sweden)

    Mayer Zaharia

    Full Text Available El cáncer de mama triple negativo (CMTN es una neoplasia maligna caracterizada por la ausencia de la expresión de los receptores de estrógeno, de progesterona y HER2. Estudios recientes han señalado que el CMTN es un grupo heterogéneo de distintas neoplasias, con pronósticos diferentes. Sin embargo, debido a que la realización de perfiles genéticos no es una práctica estándar para el diagnóstico convencional del cáncer de mama, se dificulta la apropiada identificación de este subtipo de cáncer de mama. El CMTN se caracteriza por tener patrones epidemiológicos de alta incidencia en poblaciones afroamericanas y latinas, y de menor incidencia en población caucásica y constituye un problema de salud pública por su elevada morbilidad y mortalidad. Ante la ausencia de blancos terapéuticos, la quimioterapia cumple un rol importante en el tratamiento, y muchos esfuerzos están destinándose a buscar otras combinaciones de quimioterapia y nuevas drogas, mientras que las actuales guías no especifican un tratamiento para este tipo de cánceres. En el presente documento se hace una revisión sobre las características epidemiológicas y clínicas, los posibles factores pronósticos y sobre algunas estrategias terapéuticas contra el CMTN.

  8. Animal Protection in the Lands of Pacha Mama: The Insufficiency of the Proposed Law Organic Animal Welfare in Ecuador

    Directory of Open Access Journals (Sweden)

    José Carlos Machado Júnior

    2016-12-01

    Full Text Available Considering that the Pacha Mama is subject of right in the Ecuadorian Constitution, this project analyzes the rights of animals in Ecuador according to its Civil Code and its proposal for the Animal Welfare Act. For comparison purposes the laws of other countries that recognize the sentience of animals are quoted. The conclusion is that despite the paradigm of the Andean constitutionalism, Equatorian animals are legally considered things, a reality that will not change if approved the Law of Animal Welfare. The deductive method is used with bibliographic research and analysis of foreign law.

  9. Barreras de acceso a los servicios de salud: narrativas de mujeres con cáncer de mama en Colombia

    Directory of Open Access Journals (Sweden)

    Celmira Laza V.

    2014-09-01

    Full Text Available Resumen Objetivo: explorar la existencia de barreras de acceso a los servicios de salud en las historias de mujeres con cáncer de mama, que han recibido apoyo de seis ong colombianas. Metodología: se llevó a cabo un estudio cualitativo descriptivo interpretativo, en cinco ciudades colombianas: Bogotá, Medellín, Cali, Valledupar y Santa Marta, incluyendo 44 mujeres apoyadas por seis ong. Se realizaron grupos focales y entrevistas en profundidad. Resultados: en el proceso emergieron cuatro categorías: barreras ligadas a los determinantes estructurales, barreras originadas en los determinantes intermedios, herramientas para enfrentar las barreras y una categoría que hace referencia a la oportunidad de obtener un diagnóstico y un tratamiento de cáncer de mama. A partir de estas categorías, se propone un modelo de barreras de acceso en cáncer de mama, desde la perspectiva de los determinantes sociales. Discusión: a pesar de los esfuerzos del país por mejorar la oportunidad en prevención, diagnóstico y tratamiento del cáncer —incluyendo la promulgación de la ley 1384 de 2010 (Ley Sandra Ceballos—, las mujeres con cáncer de mama enfrentan barreras de acceso a los servicios de salud, que están determinadas socialmente, y frente a las cuales el sistema muestra cierto nivel de incapacidad. Abstract Objective: to explore the existence of barriers to healthcare access in the narratives of women with breast cancer who have received the support of six Colombian NGOs. Methodology: a descriptive qualitative interpretive study was carried out in five Colombian cities: Bogotá, Medellín, Cali, Santa Marta and Valledupar. Data was collected through focus groups and interviews with 44 women supported by six NGOs. Results: in the process, four categories emerged: barriers linked to structural determinants, barriers arising from intermediate determinants, tools to address barriers and a category referring to the opportunity for diagnosis and

  10. Programa de actividades acuáticas para mujeres que han sido operadas de cáncer de mama

    OpenAIRE

    Muñoz Ortega, Alberto

    2015-01-01

    Objetivo: Crear un programa de actividades acuáticas para mujeres que han sido operadas de cáncer de mama y así mejorar su calidad de vida. Método: Se desarrollará una programación de actividades acuáticas, donde se incluirán sesiones de aquagym, aquarobic, sesiones terapéuticas, aquarunning y sesiones lúdicas. Este programa se llevará a cabo durante 4 meses con dos sesiones a la semana. Con esta variedad de actividades conseguiremos trabajar todos aquellos aspectos físicos, psicológicos y...

  11. RACISMO PRESENTE NA ANIMAÇÃO “SCRUB ME MAMA WITH A BOGGIE BEAT” DE WALTER LANTZ (1941)

    OpenAIRE

    Julio Geraldo Carvalho de Jesus; Davi Alexandre Pistila

    2017-01-01

    As Animações são fontes interessantes de serem exploradas pela perspectiva histórica, uma vez que trazem questões impostas pelo contexto da produção e podem ser utilizadas como meio de transmitir conhecimentos e ideologias. O presente artigo faz uma reflexão acerca do tema do racismo nas animações dirigidas e produzidas por Walter Lantz, no ano de 1941, tomando como base o cartoon “Scrube Me Mama with a Boogie Beat”, distribuído pela Universal Studios, e reexibido no ano de 1948. Apesar do ra...

  12. Usurpación simbólica: identidad y poder en la fiesta de la Mama Negra

    OpenAIRE

    Guerrero Arias, Patricio

    2002-01-01

    La presente tesis aborda el proceso al que hemos denominado de usurpación simbólica, mediante el cual los sectores dominantes locales de la ciudad de Latacunga, han usurpado los símbolos de la fiesta de la Mama Negra que se celebra como un acto de religiosidad popular por parte de los sectores subalternos en el mes de septiembre, para transformar su sentido y convertirla en un acto ritual político a través del cual se hace posible la legitimación del poder y su ejercicio. Es...

  13. Alteraciones de la calidad de vida en mujeres con cáncer de mama al recibir quimioterapia

    OpenAIRE

    Castillo Hidalgo, Marina

    2015-01-01

    Introducción: La calidad de vida es „‟la suma de factores físicos, emocionales y sociales que contribuyen al bienestar de una persona. Implica que, para medir ésta, deben medirse todos y cada uno de los factores que la componen. ’’ Es fundamental estudiar y valorar la calidad de vida de las mujeres con cáncer de mama que se someten a quimioterapia, ya que, tras analizar los diferentes factores, nos permite saber cuál es el impacto y los efectos secundarios que les provoca tanto la enfermedad ...

  14. Cáncer de mama y de ovario: significados, dolor y sufrimiento en la cotidianidad de mujeres pacientes

    OpenAIRE

    Alicia M. Tinoco García

    2012-01-01

    El presente estudio tiene por objetivo conocer, explicar y comprender los significados, el dolor y sufrimiento en la cotidianidad de mujeres que padecen cáncer de mama y de ovario. Aborda la subjetividad e intersubjetividad de las pacientes en su realidad cotidiana y contexto sociocultural. La investigación encuentra sustento teórico en la Sociología de la salud, Antropología de la salud y en otras ciencias de frontera que abordan problemas de salud-enfermedad, dolor y sufrimiento; así como e...

  15. Gamma Spectroscopy

    NARCIS (Netherlands)

    Niemantsverdriet, J.W.; Butz, Tilman; Ertl, G.; Knözinger, H.; Schüth, F.

    2008-01-01

    No abstract. The sections in this article are 1 Introduction 2 Mössbauer Spectroscopy 3 Time-Differential Perturbed Angular Correlations (TDPAC) 4 Conclusions and Outlook Keywords: Mössbauer spectroscopy; gamma spectroscopy; perturbed angular correlation; TDPAC

  16. Auto-exame das mamas entre estudantes de medicina Breast self-examination among medical students

    Directory of Open Access Journals (Sweden)

    Ruffo de Freitas Júnior

    1999-06-01

    Full Text Available Objetivo: avaliar o nível de conhecimento e prática do auto-exame da mama entre os estudantes do curso médico e determinar possíveis fatores associados a esta prática. Métodos: foi utilizado um questionário que continha informações sobre os alunos e o seu conhecimento a respeito do auto-exame, permitindo ainda, verificar entre as alunas a prática do mesmo. Utilizaram-se os testes do qui quadrado e "t" de Student, quando aplicáveis, para verificar a associação de alguns fatores com o auto-exame. Resultados: dos 348 questionários respondidos, 55 (16% pertenciam aos alunos do 5º ano (estudantes que haviam cursado a Disciplina de Ginecologia da Universidade Federal de Goiás, 43% eram mulheres, 62% tinham familiares médicos e 17% apresentavam história familiar de câncer de mama. Em relação ao conhecimento do auto-exame, 95% conheciam o método. Das 149 estudantes, apenas 64% o praticavam. Os motivos para não fazê-lo eram: por ser muito jovem (24%, por não acreditar que pudesse acontecer com ela (4%, por medo (9% e por preguiça (19%, sendo que 44% das alunas não souberam explicar o motivo. Tanto o conhecimento quanto a prática do auto-exame não estiveram associados ao ano do curso médico, história familiar de câncer de mama ou à presença de familiar médico. Conclusão: o auto-exame é conhecido por praticamente todos os estudantes de medicina mesmo assim, um terço das estudantes não o praticam. Com isso ressalta-se a importância do auto-exame no curso médico, a fim de que os alunos possam levar mais informações à população, não limitando esta tarefa aos meios de comunicação.Purpose: to evaluate the knowledge and practice of breast self-examination among medical students and to determine possible factors associated with this practice. Method: the authors used a questionnaire to gather information about the students and their knowledge of this self-examination. This questionnaire also allowed the authors to

  17. POSIBLES MECANISMOS DE ACCIÓN BIOLÓGICA DE LA ACTIVIDAD FÍSICA EN EL CÁNCER DE MAMA

    Directory of Open Access Journals (Sweden)

    Jairo Alejandro Fernández Ortega

    2014-11-01

    Full Text Available La evidencia científica ha demostrado la importancia de la actividad física como una estrategia efectiva para disminuir el riesgo y la recidiva del cáncer de mama. Sin embargo, hasta el momento no se conocen con precisión los mecanismos de acción biológicos del ejercicio sobre el cáncer de mama. El propósito de este artículo es realizar una revisión sistemática exhaustiva de la literatura e identificar las posibles hipótesis que se plantean de los mecanismos de acción biológicos del ejercicio sobre el cáncer de mama. Se realizó una revisión sistemática de la literatura publicada desde 1990 hasta 2011 sobre los efectos del ejercicio en el cáncer de mama.

  18. Mulher portadora de câncer de mama: percepção sobre a doença, família e sociedade

    Directory of Open Access Journals (Sweden)

    Sinvalana Schwerez Funghetto

    2003-10-01

    Full Text Available Estudo da compreensão das diferentes situações vivenciadas pelas mulheres portadoras de câncer de mama que participavam no grupo de apoio do Ambulatório de Quimioterapia, da Sociedade Hospital de Caridade de Santa Rosa - RS, no período de agosto de 1999 a setembro de 2000.Teve como objetivo, a partir de alguns conceitos teóricos da Teoria de Consecução de Metas, de Imogene King, avaliar a percepção da mulher portadora de câncer de mama em relação a sua doença, família e sociedade. Para coleta de dados foram realizadas entrevistas semi­estruturadas. À mulher, com câncer de mama, sente limitações de ordem social, física e emocional em busca de conhecimentos e de informações sobre a doença e a vida. À enfermagem cabe repensar a prática do cuidar de uma mulher com câncer de mama, assistindo­a com respeito, ética, valorização da vida humana e sensibilidade.

  19. Synthesis and evaluation of a {sup 99m}Tc-MAMA-propyl-thymidine complex as a potential probe for in vivo visualization of tumor cell proliferation with SPECT

    Energy Technology Data Exchange (ETDEWEB)

    Celen, Sofie [Laboratory for Radiopharmacy, K.U. Leuven, B-3000 Leuven (Belgium); Groot, Tjibbe de [Radiopharmacy, U.Z. Gasthuisberg K.U. Leuven, B-3000 Leuven (Belgium); Balzarini, Jan [Rega Institute for Medical Research, K.U. Leuven, B-3000 Leuven (Belgium); Vunckx, Kathleen [Nuclear Medicine, U.Z. Gasthuisberg K.U. Leuven, B-3000 Leuven (Belgium); Terwinghe, Christelle [Radiopharmacy, U.Z. Gasthuisberg K.U. Leuven, B-3000 Leuven (Belgium); Vermaelen, Peter [Nuclear Medicine, U.Z. Gasthuisberg K.U. Leuven, B-3000 Leuven (Belgium); Van Berckelaer, Lizette [Rega Institute for Medical Research, K.U. Leuven, B-3000 Leuven (Belgium); Vanbilloen, Hubert [Radiopharmacy, U.Z. Gasthuisberg K.U. Leuven, B-3000 Leuven (Belgium); Nuyts, Johan [Nuclear Medicine, U.Z. Gasthuisberg K.U. Leuven, B-3000 Leuven (Belgium); Mortelmans, Luc [Nuclear Medicine, U.Z. Gasthuisberg K.U. Leuven, B-3000 Leuven (Belgium); Verbruggen, Alfons [Laboratory for Radiopharmacy, K.U. Leuven, B-3000 Leuven (Belgium); Bormans, Guy [Laboratory for Radiopharmacy, K.U. Leuven, B-3000 Leuven (Belgium)]. E-mail: guy.bormans@pharm.kuleuven.be

    2007-04-15

    Introduction: Cytosolic thymidine kinase (TK1) catalyzes phosphorylation of thymidine to its monophosphate. TK1 activity is closely related with DNA synthesis, and thymidine analogs derivatized with bulky carboranylalkyl groups at the N-3 position were reported to be good substrates for TK1. Accordingly, we have synthesized {sup 99m}Tc-MAMA-propyl-thymidine and evaluated it as a potential tumor tracer. Methods: The bis(S-trityl)-protected MAMA-propyl-thymidine precursor (3-N-[S-trityl-2-mercaptoethyl]-N-[N'-(S-trityl-2-mercaptoethyl) amidoacetyl] -aminopropyl-thymidine) was prepared in three steps, and its structure was confirmed with {sup 1}H NMR and mass spectrometry. Deprotection of the thiols and labeling with {sup 99m}Tc were done in a two-step, one-pot procedure, yielding {sup 99m}Tc-MAMA-propyl-thymidine, which was analyzed with high-performance liquid chromatography, radio-LC-MS analysis (ESI+) and electrophoresis, and its log P was determined. The biodistribution in normal mice was evaluated, and its biodistribution in a radiation-induced fibrosarcoma (RIF) tumor mouse was compared with that of 3'-deoxy-3'-[{sup 18}F] fluorothymidine [{sup 18}F]FLT. Results: {sup 99m}Tc-MAMA-propyl-thymidine was obtained with a radiochemical yield of 70%. Electrophoresis indicated that the complex is uncharged, and its log P was 1.0. The molecular ion mass of the Tc complex was 589 Da, which is compatible with the hypothesized N{sub 2}S{sub 2}-oxotechnetium structure. Tissue distribution showed fast clearance from plasma primarily by the hepatobiliary pathway. Whole-body planar imaging after injection of {sup 99m}Tc-MAMA-propyl-thymidine in an RIF tumor-bearing mouse showed high uptake in the liver and the intestines. No uptake was observed in the tumor, in contrast to the clear uptake observed for [{sup 18}F] FLT visualized with {mu}PET. Conclusions: Although it has been reported that TK1 accepts large substituents at the N-3 position of the thymine ring

  20. Fasceíte necrotizante da mama: relato de caso Necrotizing fasciitis of the breast: case report

    Directory of Open Access Journals (Sweden)

    Marco Aurélio da Costa Silva

    1998-05-01

    Full Text Available É apresentado um caso de fasceíte necrotizante, na mama, em uma paciente de 68 anos que foi submetida à excisão de um volumoso lipoma mamário e evoluiu com infecção local agressiva, apresentando necrose extensa do parênquima da mama e de suas fáscias, além da pele, quadro este que caracteriza as fasceítes. O trabalho chama a atenção para a gravidade da entidade e a dificuldade diagnóstica, em razão do comprometimento cutâneo mais tardio e menos extenso; enfatiza-se a necessidade de afastar tal diagnóstico na vigência de infecções mamárias, assim como ter uma abordagem precoce e agressiva na presença de um quadro de fasceíte necrotizante mamária.A case of postsurgical necrotizing fasciitis is presented. A 68-year-old female patient was submitted to a lumpectomy for a big breast lipoma. After surgen there was an aggressive local infection, with extensive necrosis of the breast tissue, including the superficial and deep fasciae and also the skin over the breast. The gravity of the disease and the difficulties in its diagnosis due to the late skin necrosis are emphasized. Under such circunstances an early and aggressive approach is necessary.

  1. Practical Theology and providing service: The service through love of the Mamas Africa in the South African society

    Directory of Open Access Journals (Sweden)

    Amanda L. du Plessis

    2014-02-01

    Full Text Available A fundamental principle of the Christian faith is that man is saved by the grace and by faith in the Triune God, not by deeds. Yet, James emphasises the importance of works after the Christian has been saved. Jesus said during his ministry on earth that he did not come to be served, but to serve. Faith is therefore seen in deeds, specifically deeds of love, that is, deeds that indicate that the Christian is not leading an egocentric life anymore, but a life characterised by considering his or her fellow human beings and reaching out to them. Eighteen years after apartheid, South Africa is still a country striving to build a nation and to be healed. Marches and protests against poor public service deliveries have become a well-known sight in society. Despite the larger picture of inadequate service, there are those who serve their fellow humans and society every day. The Mamas Africa utilising the minimum resources available, are examples of people who make a difference in society every day. The concept Mama Africa indicates all women from all races who are making a difference in the South African society by promoting mutual bonding. The motivation for their deeds is a deep faith in God, who is the source of hope and a conviction that a Christian has to serve others.

  2. Tumor neuroendocrino de la mama. Presentación de un caso y revisión de la literatura

    Directory of Open Access Journals (Sweden)

    Lidia Torres Aja

    2017-04-01

    Full Text Available Los carcinomas neuroendocrinos primarios de mama son neoplasias raras que representan entre un 2 y un 5 % de los tumores mamarios. Para su diagnóstico se requiere que más del 50 % del tumor presente marcadores neuroendocrinos. Estos tumores que se observan principalmente en mujeres de edad avanzada se presentan como una masa bien delimitada, generalmente no acompañada de adenopatías axilares. El pronóstico de este tipo de cáncer todavía no está muy claro, aunque estudios recientes demuestran que es similar al de los carcinomas ductales infiltrantes convencionales. Se presenta el caso de una paciente de 76 años que acudió a consulta por presentar gran tumoración que ocupaba prácticamente toda la mama derecha sin adenopatías axilares y la cual fue informada mediante biopsia por parafina como un carcinoma neuroendocrino. Este es el primer tumor de esta característica histológica diagnosticado en Cienfuegos, por lo cual se considera de interés científico su publicación.

  3. Estado del arte el diagnóstico y tratamiento del cáncer de mama

    Directory of Open Access Journals (Sweden)

    C. Soledad Torres, Dra.

    2013-07-01

    En este capítulo revisaremos las estrategias de diagnóstico por imágenes frente a la sospecha de malignidad. En patología se explican los conceptos más recientes de la clasificación molecular del cáncer de mama y su rol pronóstico y predictivo. En tratamiento locorregional se presentan las alternativas quirúrgicas, de radioterapia y de reconstrucción mamaria según la presentación de la enfermedad. En tratamiento sistémico se señalan las indicaciones de adyuvancia pre y postoperatoria, incluyendo las terapias endocrina, biológica y quimioterapia. En la etapa metastásica se revisan los distintos tratamientos que compatibilizan la prolongación de la supervivencia con la mejor calidad de vida posible. Finalmente presentamos una serie de intervenciones que constituyen el soporte emocional de las pacientes con cáncer de mama.

  4. Descripci??n del dolor y el tono vagal en mujeres supervivientes de c??ncer de mama y efectos f??sicos de un programa de fisioterapia acu??tica

    OpenAIRE

    Caro Mor??n, Elena

    2015-01-01

    El diagn??stico precoz, los avances en los tratamientos y la prevenci??n de la recurrencia son factores responsables del aumento de la supervivencia en las pacientes de c??ncer de mama. Estas pacientes sufren numerosas secuelas o trastornos cr??nicos relacionados con la propia enfermedad o derivadas de los tratamientos recibidos que repercuten sobre su calidad de vida. Las mujeres supervivientes de c??ncer de mama (SCM), objeto de nuestro estudio, presentan disfunciones card??a...

  5. Global trends in breast cancer incidence and mortality Cáncer de mama en el mundo

    Directory of Open Access Journals (Sweden)

    Peggy L. Porter

    2009-01-01

    Full Text Available This review highlights the increasing incidence of breast cancer world-wide and the increasing burden of breast cancer deaths experienced by lower-income countries. The causes of increasing incidence have been attributed to changes in the prevalence of reproductive risk factors, lifestyle changes, and genetic and biological differences between ethnic and racial groups. All these factors may contribute, but data linking etiological factors to increased risk in developing countries is lacking. The challenge for lower-income countries is developing effective strategies to reverse the trend of increasing mortality. Down-staging of breast cancer by early detection is a promising long-term strategy for preventing disease-related deaths but it is difficult to make the economic investment required to carry out broad screening programs. Successful strategies for addressing the growing breast cancer burden will therefore take political will, reliable data, public and medical community awareness, and partnerships between community advocates, governments, non-governmental organizations and biotechnology.Se destaca el aumento en la incidencia de cáncer de mama (CaMa en el mundo y la creciente carga de muertes por la enfermedad en países en desarrollo. El aumento en la incidencia se atribuye a cambios en la prevalencia de factores de riesgo reproductivo, estilo de vida, y a diferencias biológicas entre grupos étnicos y raciales. Sin embargo, aún faltan datos que relacionen los factores etiológicos al incremento en el riesgo en países en desarrollo. El desafío es generar estrategias efectivas que reviertan la tendencia en la mortalidad. La detección en etapas más tempranas es una estrategia prometedora de largo plazo pero la inversión necesaria para los programas de tamizaje es muy alta. Las estrategias exitosas para hacer frente a la creciente carga de CaMa deben tener voluntad política, evidencia confiable, reconocimiento de la comunidad p

  6. Tamoxifeno y afecciones endometriales en pacientes con cáncer de mama

    Directory of Open Access Journals (Sweden)

    Delia B. Dalbert

    2013-04-01

    Full Text Available Los objetivos fueron evaluar la prevalencia de afecciones endometriales en pacientes tratadas con tamoxifeno (TAM y analizar los aspectos epidemiológicos, ecográficos, histeroscópicos e histopatológicos. Desde enero de 1999 a diciembre 2008 se estudiaron 152 pacientes con cáncer de mama tratadas con TAM (20 mg/día, sintomáticas (con sangrado o asintomáticas, pre y postmenopáusicas, incluidas en forma consecutiva. El diseño fue prospectivo y observacional. Los métodos diagnósticos usados fueron ecografía transvaginal, histeroscopía y biopsia. Las pacientes fueron seguidas durante 5 años con ecografía cada 12 meses e histeroscopia con biopsia en casos que lo justificaran. Edad: 62.76 ± 10.24 años y tiempo de tratamiento: 36.2 ± 19.9 meses. El adenocarcinoma se observó en 3/87 (3.45% pacientes con factores de riesgo y en 1/65 (1.54% sin ellos (RA: 1.91, IC 95% 1.88 a 1.94. Las afecciones benignas se hallaron en 148 pacientes (97.37% y los adenocarcinomas en 4 (2.63%,1 en un pólipo de aspecto benigno. Los 4 se observaron en mujeres postmenopáusicas (2 asintomáticas con grosor endometrial igual o mayor a 16 mm. El riesgo de cáncer fue significativamente mayor en sintomáticas (2.36 versus 0.42 en asintomáticas. Tres adenocarcinomas se detectaron entre 24 y 48 meses del tratamiento. Recomendamos un seguimiento con ecografía transvaginal de las pacientes asintomáticas, resección de los pólipos evaluando factores de riesgo y tiempo de exposición, en especial luego de los 24 meses. Consideramos aceptable un cut-off = 10 mm en el grosor del endometrio en postmenopáusicas asintomáticas para realizar histeroscopía y biopsia.

  7. Cáncer de mama en varones: casos recogidos en 20 años (1990-2011

    Directory of Open Access Journals (Sweden)

    Emilio Orquín Ortega

    Full Text Available Introducción: en la sociedad occidental el cáncer de mama es el de mayor prevalencia en el sexo femenino, pero es muy raro en el sexo masculino (0,1-0,2 %. Tras analizar la epidemiología y los factores de riesgo, se realizó un estudio retrospectivo de los casos hallados en una unidad de unidad de cirugía menor ambulatoria (CmA del Hospital General de Especialidades Juan Grande en el periodo de 1990 a 2011 (n = 10. Métodos: se describen los hallazgos en la unidad CmA, adonde acuden pacientes con diagnósticos de afecciones benignas, fundamentalmente de piel, anejos cutáneos y tejidos subcutáneos. Se eligió, describió y siguió a los varones que resultaron tener un carcinoma de mama. Los criterios de inclusión fueron el sexo masculino y la confirmación histológica de cáncer de mama. Se estudiaron las variables epidemiológicas, tumorales y terapéuticas, y la supervivencia. Resultados: hubo 10 sujetos con edades de 58 ± 15 años, sin antecedentes de especial interés. Las tumoraciones se localizaban en la cara anterior del tórax, en la región mamaria, de forma unilateral. El 100 % de los pacientes acudieron con diagnóstico de una afección benigna, e igualmente en el 100 % de los casos el diagnóstico anatomopatológico definitivo fue carcinoma ductal. Conclusiones: los pacientes se diagnosticaron después de una cirugía y no hubo diagnóstico clínico previo. La supervivencia estuvo condicionada por la tardanza en el diagnóstico y, por tanto, en el inicio del tratamiento. La supervivencia a los 5 años de revisiones fue de 7 pacientes, aunque algunos fallecieron por otras causas.

  8. Pesquisaje de cáncer de mama en la comunidad de Santos Suárez

    Directory of Open Access Journals (Sweden)

    Marianela Prendes Labrada

    1998-04-01

    Full Text Available Se realiza un estudio descriptivo en 3 consultorios del área del Policlínico "Santos Suárez" en el año 1996 con el objetivo de determinar la incidencia de cáncer de mama y la utilización de métodos de detección precoz. Se informa que la muestra estuvo constituida por 600 mujeres mayores de 20 años seleccionadas al azar a las cuales se les hizo el pesquisaje y se les aplicó una encuesta. Se encuentra que la incidencia de cáncer mamario fue del 3 %. El 22,5 % de las mujeres se clasificaron como de alto riesgo de padecer el cáncer y el 83,3 % de los cánceres mamarios se detectaron en mujeres con alto riesgo y más de 50 años. Se señala que el 58,2 % de la muestra no conoce el autoexamen de mama y el 64 % no lo practica. Al 45,1 % de las mujeres nunca se le había realizado el examen clínico de las mamasA descriptive study of 3 physicians'offices from Santos Suárez polyclinic was carried out in 1996 aimed at determining the incidence of breast cancer and the use of early diagnosis methods. It is stressed that 600 randomly chosen women over 20 were included in the sample, who were screened and applied a survey. The breast cancer incidence rate was 3 %. 22.5 % of sampled women was clasified as high breast cancer risk subjects whereas 83.3 % of detected breast cancer was found in high risk women over 50. 58.2 % of them has no idea about the breast self-examination and 64 % does not put it into practice. 45.1 % of women has never been breast-screened before

  9. Cáncer de mama en México: una prioridad apremiante Breast cancer in Mexico: an urgent priority

    Directory of Open Access Journals (Sweden)

    Felicia Marie Knaul

    2009-01-01

    Full Text Available El cáncer de mama es una grave amenaza para la salud de la mujer a nivel mundial y constituye una prioridad no reconocida en los países de ingresos medios. Este trabajo presenta datos de México y revela que desde 2006 el cáncer de mama es causante de un mayor número de muertes que el cáncer cérvicouterino. Esta afección es la segunda causa de muerte en mujeres de 30 a 54 años de edad y amenaza a todos los grupos socioeconómicos. Los datos sobre detección, si bien subreportados, muestran 6000 nuevos casos en 1990 y se estima un incremento cercano a 16500 nuevos casos anuales para 2020. Más aún, la mayoría de los casos se autodetecta y sólo 10% de todos los casos se identifica en etapa I. La seguridad social en México cubre alrededor de 40 a 45% de la población e incluye tratamiento del cáncer de mama. A partir de 2007, la población sin seguridad social tiene derecho a tratamiento de cáncer de mama a través del Seguro Popular de Salud. A pesar de esto, los servicios escasean y las intervenciones de detección temprana, en particular la mamografía, son muy limitadas. Desde el año 2006, sólo 22% de las mujeres de 40 a 69 años se sometió a una mamografía en el último año. Existen barreras tanto en la demanda como en la oferta. El cabildeo, la educación, la creación de conciencia y una respuesta articulada de políticas son importantes para garantizar una mayor cobertura, acceso y aceptación tanto del tratamiento como de la detección temprana.Breast cancer is a serious threat to the health of women globally and an unrecognized priority in middle-income countries. This paper presents data from Mexico. It shows that breast cancer accounts for more deaths than cervical cancer since 2006. It is the second cause of death among women aged 30 to 54 and affects all socioeconomic groups. Data on detection, although underreported, show 6000 new cases in 1990 and a projected increase to over 16500 per year by 2020. Further, the

  10. Prevenção de câncer de mama em mulheres idosas: uma revisão

    OpenAIRE

    Carvalho, Cecília Maria Resende Gonçalves de; Brito, Cleidiane Maria Sales de; Nery, Inez Sampaio; Figueiredo, Maria do Livramento Fortes

    2009-01-01

    Trata-se de um estudo de revisão bibliográfica nacional, que objetivou refletir sobre a prevenção do câncer de mama em idosas. Esta curiosidade surgiu a partir da constatação da transição demográfica brasileira e da evidente feminização da velhice, o que impõe demandas assistênciais específicas e integrais para este segmento populacional. Ressalta-se a necessidade de ampliar o conhecimento a cerca da problemática, bem como a superação do negligenciamento na prevenção desta patologia, especial...

  11. Mecanismos cognitivos del optimismo en cáncer de mama : relaciones con la calidad de vida /

    OpenAIRE

    Pastells Pujol, Sílvia,

    2017-01-01

    Departament responsable de la tesi: Departament de Psicologia Bàsica, Evolutiva i de l'Educació Introducció El càncer de mama és la patologia oncològica més diagnosticada a Espanya i al món occidental. El seu diagnòstic i tractament suposen una situació estressant que pot durar mesos o fins i tot cronificar-se quan apareixen recurrències. Les diferents fases de la malaltia desencadenen diferents conseqüències físiques, emocionals i socials que afecten la vida diària de les pacients. Un del...

  12. Determination of mammography images constancy parameters for C R system using Phantom Mama and mammographic accreditation phantom

    International Nuclear Information System (INIS)

    Santos, Andre U. dos; Souza, Wedla P. de; Hoff, Gabriela

    2009-01-01

    In the diagnostic imaging services is common to find the analogical image acquiring method in transition to the digital acquiring method. However it is necessary to define the appropriate techniques for acquisition of images. For that achievement the reference parameter of image must be determinate and based on that, determine the constancy and diagnostic image quality tests. Annually, for each imaging system, it is recommended the technical parameters review for different types of breast, reducing the dose on the mammary gland and preserving the image quality. It should be done based on national regulations and in accordance to the requirements of the medical team. The methodological proposes of this work has the objective of realize the constancy analysis for the image quality, using the PhantonMama and Mamographic Accreditation Phantom model 18-220 (recommended by ACR) and the software. Both protocols suggested were adequate for the analysis proposed. (author)

  13. Linfonodo sentinela: um novo conceito no tratamento cirúrgico do câncer de mama

    Directory of Open Access Journals (Sweden)

    Cícero de Andrade Urban

    Full Text Available O linfonodo sentinela é o primeiro linfonodo que recebe a drenagem linfática proveniente do câncer de mama. A sua detecção tem a finalidade de predizer o estado da axila e evitar o esvaziamento axilar nos pacientes sem comprometimento metastático. Os autores realizaram uma ampla revisão da literatura, envolvendo os aspectos cirúrgicos, de Medicina Nuclear e de Anatomia Patológica do linfonodo sentinela. Muitos estudos demonstraram a eficácia do linfonodo sentinela em predizer o comprometimento axilar. Entretanto, existem várias técnicas empregadas para a identificação desse linfonodo, sem haver ainda um consenso em relação ao método mais adequado e reproduzível. A associação do corante vital com o probe, até o presente, é a que tem apresentado os melhores resultados. Também não existe uma padronização do exame patológico intra-operatório do linfonodo sentinela e os índices de falso-negativos encontrados são bastante variáveis. A biópsia do linfonodo sentinela pode oferecer uma alternativa segura à dissecção axilar e com menos efeitos colaterais nos pacientes com axila clinicamente negativa. Entretanto alguns pontos conflitantes devem ser resolvidos antes que o método passe a ser utilizado na prática com o câncer de mama. O objetivo desse trabalho foi discutir os principais aspectos envolvidos no desenvolvimento e na aplicação dessa técnica.

  14. Padrão alimentar de mulheres com câncer de mama: um estudo a posteriori

    Directory of Open Access Journals (Sweden)

    Karin Sedó Sarkis

    2014-09-01

    Full Text Available Objetivo: Identificar o padrão alimentar a posteriori de mulheres com câncer de mama. Métodos: Estudo observacional, transversal e analítico. Foram avaliadas 100 mulheres com câncer de mama submetidas à quimioterapia / radioterapia, atendidas em um centro de câncer na cidade de Fortaleza, de Julho-Dezembro de 2012. Os dados clínicos, socioeconômicos e antropométricos foram analisados. Para avaliação do consumo foi utilizado um QFA validado, e o consumo diário de cada alimento foi definido em gramas. Então eles foram agrupados de acordo com sua composição nutricional, seguindo a pirâmide alimentar adaptada à população brasileira, em 10 grupos de alimentos. Resultados: Idade média 50,9 anos, com prevalência de carcinoma ductal (83% em estágio III (60%. A média do IMC indica excesso de peso (28,3 kg/m2 e a circunferência da cintura estava acima do recomendado (98,6 cm. Nós identificamos quatro componentes alimentares e 21% da variância da dieta foi explicado pelo componente alimentar 1 (Risk, com a matriz composta por carne vermelha e processada, óleos e gorduras e cereais. Conclusão: O padrão alimentar das pacientes foi caracterizado por uma dieta de risco.

  15. Ma ma (2015: un reflejo de la mujer española con cáncer de mama

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    Clara Peralta?Nueno et al.

    2017-03-01

    Full Text Available Ma ma (2015 es una película de drama española dirigida por Julio Medem y producida por Morena Films. Esta película narra la historia de la vida de Magda cuyo personaje es interpretado por Penélope Cruz. Tras serle diagnosticado un cáncer de mama, Magda, una maestra en paro, no sabrá cómo actuar ni de qué manera cambiará esta enfermedad su vida, pero poco a poco sacará a la superficie toda su energía vital. El cáncer de mama representa el tipo de cáncer más frecuente en la mujer. Aunque la mayoría de los factores de riesgo identificados pueden ser modificables, los sistemas de salud se concentran en actividades que permiten fortalecer la prevención primaria y actividades de prevención secundaria y terciaria. La detección temprana y el tratamiento adecuado son indispensables para luchar contra esta enfermedad. El proceso emocional generado por la presencia de cáncer, conlleva un mecanismo de reconstitución psíquico que permite a la paciente conformar una respuesta a los desafíos orgánicos, cognitivos, sociales y emocionales a los cuales se ve enfrentada. Dicho proceso es favorecido entre otros factores por contar con una red de apoyo socio?familiar sólida.

  16. Experiencia de cuidadores familiares de mujeres con cáncer de mama: una revisión integradora

    Directory of Open Access Journals (Sweden)

    María Mercedes Moreno-González

    2018-01-01

    Full Text Available Objetivo: identificar la evidencia científica de enfermería relacionada con la experiencia de los cuidadores familiares de mujeres con cáncer de mama.Metodología: revisión integradora siguiendo los lineamientos de Ganong; búsqueda en bases de datos: EMBASE, OVID, PUBMED, SAGE journals, SCIELO, Google Academic, ISI Web of Science y SCOPUS, artículos publicados entre los años 2000 y 2016. Resultados: se incluyeron 18 artículos producto de investigaciones primarias de tipo cualitativo, cuyos referentes teórico-metodológicos fueron fenomenología y teoría fundamentada, las técnicas de recolección de datos fueron la entrevista semiestructurada y en profundidad. Se presentan y discuten como hallazgos las siguientes categorías: impacto del diagnóstico; lo que implica ser cuidador; efectos en el cuidador; estrategias de afrontamiento; cambios en los roles y las relaciones; apoyo social. Conclusiones: las características de los cuidadores son variables, es necesario conocer sobre la cultura y recursos propios de cada contexto. Los cuidadores requieren información clara y oportuna en relación su función y las habilidades a desarrollar, especialmente para otorgar apoyo emocional. Es necesaria la indagación de dichas experiencias en el contexto mexicano. Las relaciones padres e hijos en las familias de mujeres con cáncer de mama es un asunto poco estudiado, se requieren futuros estudios en este tema.

  17. TUMOR PHYLLODES DE LA MAMA.CARACTERIZACIÓN EN LA PROVINCIA CIENFUEGOS.ESTUDIO DE 20 AÑOS

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    Lidia Torres Aja

    2007-01-01

    Full Text Available El tumor Phyllodes de la mama es poco frecuente. Tiene un origen fibroepitelial con potencial agresivo y representa el 0.3% a 0.4% de todos los tumores mamarios y el 2.5% a 3% de los tumores epiteliales de dicho órgano.Objetivo: Nuestro objetivo fundamental es caracterizar desde el punto de vista clínico patológico los tumores Phyllodes operados en la provincia de Cienfuegos durante 20 años.Tipo de estudio: descriptivo prospectivo observacional. Periodo evaluado: 20 años desde 1 de enero de 1987 hasta el 31 de diciembre del 2006. Universo: 57 pacientes.Métodos: para realizar nuestra investigación hemos seguido anualmente durante estos 20 años los casos operados en nuestra provincia, examinando personalmente los casos en consulta de Mastología antes de operarlos y siguiéndolo por consulta de operados durante más de 5 añosResultados fundamentales: como resultados fundamentales de nuestra investigación obtuvimos que se operaron en esos 20 años un total de 57 tumores Phyllodes, los cuales representaron el 2.9% del total de tumores fibroepiteliales de mama operados.Aunque el mayor número de casos se detectó en pacientes de más de 40 años, queremos resaltar que en este periodo se operaron los únicos tumores Phyllodes en niña y en adolescente reportados en nuestra provincia

  18. Molecular spectroscopy

    International Nuclear Information System (INIS)

    Kokh, Eh.; Zonntag, B.

    1981-01-01

    The latest investigation results on molecular spectroscopy with application of synchrotron radiation in the region of vacuum ultraviolet are generalized. Some results on investigation of excited, superexcited and ionized molecule states with the use of adsorption spectroscopy, photoelectron spectroscopy, by fluorescent and mass-spectrometric methods are considered [ru

  19. Atom spectroscopy

    International Nuclear Information System (INIS)

    Kodling, K.

    1981-01-01

    Experiments on atom photoabsorption spectroscopy using synchrotron radiation in the 10-1000 eV range are reviewed. Properties of the necessary synchrotron radiation and the experiment on absorption spectroscopy are briefly described. Comparison with other spectroscopy methods is conducted. Some data on measuring photoabsorption, photoelectron emission and atom mass spectra are presented [ru

  20. Vibrational spectroscopy

    Science.gov (United States)

    Umesh P. Agarwal; Rajai Atalla

    2010-01-01

    Vibrational spectroscopy is an important tool in modern chemistry. In the past two decades, thanks to significant improvements in instrumentation and the development of new interpretive tools, it has become increasingly important for studies of lignin. This chapter presents the three important instrumental methods-Raman spectroscopy, infrared (IR) spectroscopy, and...

  1. Terahertz spectroscopy

    DEFF Research Database (Denmark)

    Jepsen, Peter Uhd

    2009-01-01

    In this presentation I will review methods for spectroscopy in the THz range, with special emphasis on the practical implementation of the technique known ad THz time-domain spectroscopy (THz-TDS). THz-TDS has revived the old field of far-infrared spectroscopy, and enabled a wealth of new...... activities that promise commercial potential for spectroscopic applications in the THz range. This will be illustrated with examples of spectroscopy of liquids inside their bottles as well as sensitive, quantitative spectroscopy in waveguides....

  2. POSIBLES MECANISMOS DE ACCIÓN BIOLÓGICA DE LA ACTIVIDAD FÍSICA EN EL CÁNCER DE MAMA

    OpenAIRE

    Jairo Alejandro Fernández Ortega; José Antonio de Paz Fernández

    2014-01-01

    La evidencia científica ha demostrado la importancia de la actividad física como una estrategia efectiva para disminuir el riesgo y la recidiva del cáncer de mama. Sin embargo, hasta el momento no se conocen con precisión los mecanismos de acción biológicos del ejercicio sobre el cáncer de mama. El propósito de este artículo es realizar una revisión sistemática exhaustiva de la literatura e identificar las posibles hipótesis que se plantean de los mecanismos de acción biológicos del ejercicio...

  3. Cáncer en mama supernumeraria. Presentación de un caso. Hospital Clínico Quirúrgico Docente 10 de Octubre

    Directory of Open Access Journals (Sweden)

    Alfonso Guillermo Ramos Sosa

    2017-01-01

    Full Text Available La presencia de tejido mamario ectópico o mama supernumeraria, desarrollado a lo largo de la línea mamaria, es infrecuente, pero tiene un alto riesgo de malignizarse. Se presenta el caso de una paciente de 71 años de edad, que presentó una masa aumentada de volumen en el extremo superior de la línea mamaria, cercana a la axila derecha, y otra masa ubicada a la hora 12 del reloj, cercano a la areola. El estudio anatomopatológico de ambos procesos tumorales de la mama derecha correspondió con un carcinoma lobular. La paciente fue intervenida quirúrgicamente, encontrándose una adenopatía axilar derecha positiva de enfermedad maligna. Recibió tratamiento adyuvante con quimioterapia, radioterapia y hormonoterapia.

  4. Estudio de casos y controles de marcadores sanguíneos para el diagnóstico precoz de cáncer de mama

    OpenAIRE

    Bayo Calero, Juan Lucas

    2016-01-01

    En el mundo desarrollado, el cáncer de mama es la neoplasia femenina más frecuente y que causa más mortalidad. Los programas de detección precoz contribuyen a un diagnóstico temprano de la enfermedad y por tanto a mejorar la supervivencia de la misma. No existen marcadores tumorales específicos para la fase precoz del cáncer de mama; si existiera alguno eficaz, podría servir de apoyo al screening radiológico. Sin embargo, ya en la fase de estudio clínico y diagnóstico final, se solicitan much...

  5. Nuevas aportaciones a la búsqueda de genes de predisposición al cáncer de mama hereditario

    OpenAIRE

    Fernández García, Daniel

    2014-01-01

    [ES] El cáncer de mama es el más frecuente en mujeres y la principal causa de muerte tanto en países desarrollados como en países en desarrollo, representando un 23 % del total de nuevos casos de cáncer (se estima en 1 millón de nuevos casos cada año) y un 14 % del total de muertes en 2008 (Jemal et al. 2011). Aproximadamente un 5-10% de los cánceres de mama tienen una predisposición genética debido a la presencia de mutaciones germinales de genes de susceptibilidad, de forma que el aumen...

  6. Linfoma no Hodgkin primario de mama, revisión de la literatura y presentación de un caso

    Directory of Open Access Journals (Sweden)

    Caridad Verdecia Cañizares

    2011-06-01

    Full Text Available El linfoma no Hodgkin primario de la mama es una entidad poco frecuente en pediatría y representa el 0,4 al 0,5 % de todos los tumores mamarios malignos. Debido a que carecen de características propias, tanto clínicas, citológicas como ecográficas, resulta muy difícil establecer el diagnóstico preoperatorio. Se presenta el caso de un linfoma no Hodgkin primario de la mama en una paciente de 3 años que llegó en estadio avanzado de la enfermedad, y se subraya la importancia del tratamiento en un equipo multidisciplinario.

  7. Roles de género tradicionales y personalidad tipo c en mujeres con diagnóstico de cáncer de mama

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    Marina Ceballos-Fontes

    2016-01-01

    Full Text Available Se identifica el desarrollo de la personalidad tipo c mediante procesos de socialización que fomentan roles normatizados de género y la relación de éstos con el cáncer de mama. Se entrevistaron mujeres diagnosticadas con esta enfermedad utilizando el método interpretativo para el análisis de datos. Los resultados mostraron relación entre los elementos descritos al encontrarse que la necesidad de armonía es el elemento prevaleciente de este constructo de personalidad que incide negativamente en prácticas de autocuidado, tales como la autoexploración mamaria y la asistencia oportuna al médico. Por ello, se proponen acciones desde la práctica psicológica que permitan promover el autocuidado enfocado en la prevención oportuna del cáncer de mama.

  8. Sono, qualidade de vida e depressão em mulheres no pós-tratamento de câncer de mama

    OpenAIRE

    Rafihi-Ferreira,Renatha El; Pires,Maria Laura Nogueira; Soares,Maria Rita Zoéga

    2012-01-01

    Este trabalho investigou a qualidade de sono de mulheres com câncer de mama e suas relações com qualidade de vida e depressão. Cinqüenta mulheres com câncer de mama (grupo clínico) e cinqüenta controles responderam um questionário médico-demográfico e ao instrumento Pittsburgh Sleep Quality Index. O grupo clínico também respondeu aos instrumentos Quality of Life Cancer-Survivor e Brief Zung Self-Rating Depression Scale. Verificou-se que mulheres com câncer tinham significativamente mais queix...

  9. Efeito dos Estrógenos Conjugados e da Medroxiprogesterona sobre a Mama: Estudo Experimental

    Directory of Open Access Journals (Sweden)

    Santos Luciana de Oliveira Marques dos

    2001-01-01

    Full Text Available Objetivo: avaliar no tecido mamário a influência de drogas empregadas na terapia de reposição hormonal sobre a proliferação celular, a quantidade de colágeno e de fibras elásticas e as alterações histológicas gerais do parênquima. Método: utilizaram-se 61 ratas Wistar-UFPR, adultas, divididas em 5 grupos. O grupo padrão (n=12 representou o perfil hormonal ovariano normal. As 49 ratas restantes foram ooforectomizadas e a partir do 96º dia P.O. receberam a medicação designada para cada grupo durante 30 dias. O grupo EEC (n=13 recebeu 50 mg/dia de estrógenos eqüinos conjugados; o grupo MPA (n=12, 2,0 mg/dia de acetato de medroxiprogesterona; o grupo EEC + MPA (n=12, ambos, e o grupo AD (n=12, água destilada. No 31º dia de medicação todos os animais foram sacrificados e as mamas inguinais foram retiradas para análise histológica. A avaliação da proliferação celular nos ductos e ácinos foi realizada por método imuno-histoquímico utilizando-se anticorpo anti-PCNA. Utilizando-se a coloração de Sirius-Red quantificou-se o colágeno maduro (tipo I e imaturo (tipo III. A coloração de Weigert avaliou a formação de fibras elásticas. A análise anatomopatológica foi realizada em coloração de hematoxilina-eosina, determinando-se o número de ácinos por ducto terminal, número de ductos por campo, presença de secreção intraductal e a intensidade de vacuolização intracitoplasmática. Resultados: o grupo EEC + MPA apresentou menor porcentagem de células ductais em proliferação (46,1% (p<0,0001. Também mostrou maior taxa de proliferação das células acinares (66,3%, sendo semelhante ao grupo MPA (p=0,075 mas diferente dos demais grupos (p<0,004. No grupo EEC encontrou-se maior quantidade de colágeno imaturo (33,6% (p<0,01 e o grupo MPA apresentou mais elevada concentração de fibras elásticas (11,7% (p<0,0001. Os grupos EEC + MPA e MPA apresentaram hiperplasia acinar secretora, sendo intensa (91,7% no grupo

  10. Tuberculose Primária da Mama Primary Tuberculosis of the Breast

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    Elisvania Rodrigues da Silva

    2002-05-01

    Full Text Available Objetivos: apresentar casuística de tuberculose mamária e a avaliação dos métodos diagnósticos e clínicos para diagnóstico diferencial com carcinoma e sua evolução após tratamento. Pacientes e Métodos: foram incluídas duas pacientes com tuberculose mamária admitidas e acompanhadas em nosso Serviço de Mastologia e uma paciente da clínica privada no período de março 2001 a março de 2002. Foram avaliados os sintomas e sinais clínicos, achados laboratorias e de imagem, curso clínico, resposta terapêutica e seguimento. Resultados: a média de idade foi de 40,6 anos. Os sinais e sintomas mais freqüentes foram a dor e tumoração na mama. Em duas pacientes o diagnóstico presuntivo baseou-se nos achados clínicos e histopatológicos (processo inflamatório granulomatoso e na resposta terapêutica aos tuberculostáticos. O diagnóstico microbiológico foi dado obtido em apenas uma paciente, por meio do achado do bacilo de Koch no tecido mamário. O esquema tríplice tuberculostático utilizado foi à base de rifampicina, isoniazida e pirazinamida, obtendo-se regressão das lesões mamárias. Conclusão: a tuberculose mamária primária é entidade rara que pode se apresentar clinicamente como nódulo mamário e radiologicamente como carcinoma, sendo importante o seu conhecimento para diagnóstico diferencial na presença de massa mamária.Purpose: to make a differential diagnosis in regard to breast carcinoma and to evaluate diagnostic and clinical methods in the treatment of breast tuberculosis and the follow-up after adequate treatment. Patients and Methods: three patients with breast tuberculosis were observed from March 2001 to March 2002; the first two were hospitalized at our Mastology Department and the third patient was treated at a private clinic. The clinical signs and symptoms, laboratory findings, response to therapy and follow-up were evaluated. Results: the average age of the patients was 40.6 years. The most

  11. UTILIZAÇÃO DE KITS COMO MARCADORES ONCOLÓGICOS PARA O CÂNCER DE MAMA: UMA PROSPECÇÃO TECNOLÓGICA

    Directory of Open Access Journals (Sweden)

    Antonio Luiz Gomes Júnior

    2014-09-01

    Full Text Available O câncer de mama é a neoplasia maligna mais comum entre as mulheres e sua taxa de mortalidade ainda é alta. É essencial desenvolver ferramentas de diagnóstico mais sensíveis, que não só complementem a mamografia, mas também permitam a detecção e diagnóstico precoce do câncer de mama, permitindo uma terapia menos invasiva, levando a uma menor morbidade nessas pacientes, ao passo que se torna mais eficaz. O presente trabalho teve como objetivo realizar uma prospecção tecnológica dos kits de identificação de marcados oncológicos para o câncer de mama, por meio da verificação de pedidos de patentes nas bases de dados do Instituto Nacional de Propriedade Industrial (INPI, Organização Mundial de Propriedade Intelectual (WIPO, Banco Europeu de Patente (EPO e no Banco Americano de Marcas e Patentes (USPTO. Após a pesquisa foi constatado que apenas 34 patentes foram encontradas nos bancos de dados analisados, classificandos em classes diferentes, com maior prevalência para a C12Q. Contudo, em relação a aplicabilidade clínica do uso dos marcadores oncológicos no câncer de mama, ainda são necessários consideráveis investimentos para a obtenção de dados provenientes de novos estudos, visto que o câncer é um problema em ascenção.

  12. Factores asociados con el tratamiento oportuno de mujeres con cáncer de mama apoyadas por una organización no gubernamental en Bogotá

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    Guillermo Sánchez

    2015-12-01

    Conclusiones. Según la literatura científica, el pronóstico de las mujeres con cáncer de mama se modifica cuando se accede de manera oportuna al tratamiento. En este grupo de mujeres de Bogotá se encontraron factores socioeconómicos que al parecer determinaron su acceso efectivo al tratamiento, lo que revelaría la existencia de ‘inequidades’ determinadas socialmente.

  13. Achieving community-based postpartum follow up in eastern Uganda: the field experience from the MamaMiso Study on antenatal distribution of misoprostol

    OpenAIRE

    Ditai, James; Frye, Laura J.; Durocher, Jill; Byrne, Meagan E.; Ononge, Sam; Winikoff, Beverly; Weeks, Andrew D.

    2017-01-01

    Background Advance provision of misoprostol to women during antenatal care aims to achieve broader access to uterotonics for the prevention of postpartum hemorrhage. Studies of this community-based approach usually involve antenatal education as well as timely postpartum follow-up visits to confirm maternal and neonatal outcomes. The MamaMiso study in Mbale, Uganda sought to assess the feasibility of conducting follow-up visits in the postpartum period following advance provision of misoprost...

  14. Estratégias de instituições da sociedade civil no acesso a medicamentos para câncer de mama no SUS

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    Aline Scaramussa Deprá

    2015-07-01

    Full Text Available Esta pesquisa objetiva identificar e analisar as estratégias de instituições da sociedade civil dedicadas ao câncer de mama (ISC-CM no acesso a medicamentos no SUS e seus principais atores sociais. Utilizou-se a abordagem qualitativa, empregando-se os métodos de análise de redes sociais e bola-de-neve e as técnicas de observação participante e entrevistas semiestruturadas. A análise temática baseou-se nas categorias: acesso a medicamentos para tratamento de câncer de mama; relacionamento das ISC-CM com o Estado; relacionamento das ISC-CM com a indústria farmacêutica; e outras estratégias utilizadas por ISC-CM no acesso a medicamentos. Os resultados mostraram que as ISC-CM têm influenciado o acesso a medicamentos para câncer de mama no SUS e sua principal estratégia é a pressão sobre o Estado. A indústria farmacêutica patrocina algumas dessas instituições para fortalecê-las com o intuito de ampliar seu mercado. As principais dificuldades no acesso a medicamentos se referem à deficiência de serviços, à iniquidade dos tratamentos oferecidos, e à inclusão de tecnologias no SUS.

  15. O risco familiar de câncer de mama: a psicanálise diante da pesquisa genética

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    Luciane Loss Jardim

    Full Text Available A Pesquisa Genética está definitivamente na pauta da ciência deste século. Em poucas ocasiões, porém, foi analisada sob a ótica da psicanálise. Este trabalho assume a perspectiva de abordar o risco familiar de câncer de mama pelo viés psicanalítico. Para tal, avalia a posição de quatro mulheres que se submeteram à pesquisa genética desenvolvida, em nível regional, pelo Instituto da Mama do Rio Grande do Sul, vinculado ao Banco Nacional de DNA, com o intuito de verificar a ocorrência de mutação genética responsável pelo câncer de mama hereditário. Aborda as influências tecnológicas na subjetividade e a posição do sujeito frente à hereditariedade, à herança e à enfermidade. Este trabalho de pesquisa é parte de um estudo denominado “Estudo psicanalítico do adoecer de câncer de mama” que , por sua vez fez parte do projeto mais amplo designado como Projeto do Banco Nacional de DNA, executado junto ao Ministério da Saúde.

  16. Caracterização da dor em mulheres após tratamento do câncer de mama

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    Vânia Tie Koga Ferreira

    2014-03-01

    Full Text Available Este estudo pretendeu caracterizar e localizar a dor nas mulheres submetidas ao tratamento por câncer de mama. Estudo de caráter exploratório, descritivo, com abordagem quantitativa, pelas medidas de tendência central e percentual. Pesquisa desenvolvida no Núcleo de Ensino e Pesquisa e Assistência na Reabilitação de Mastectomizadas com 30 mulheres. Os dados foram coletados no período de fevereiro a agosto de 2008, por meio de instrumento contendo variáveis capazes de caracterizar e localizar a dor, e foram tratados por meio de média, mediana, moda e desvio-padrão e percentual. Destacou-se que 56,7% mulheres referiram que a dor é diária, 46,7% mulheres referiram que a dor teve início após a cirurgia da mama, e para 40% a dor é constante. Conhecimento, reconhecimento e manejo do sintoma permitem ofertas terapêuticas alternativas para o alívio da dor, minimizando efeitos físicos e emocionais que podem ser causados na vida de mulheres submetidas ao tratamento por câncer de mama.

  17. Modern spectroscopy

    CERN Document Server

    Hollas, J Michael

    2013-01-01

    The latest edition of this highly acclaimed title introduces the reader to a wide range of spectroscopies, and includes both the background theory and applications to structure determination and chemical analysis.  It covers rotational, vibrational, electronic, photoelectron and Auger spectroscopy, as well as EXAFs and the theory of lasers and laser spectroscopy. A  revised and updated edition of a successful, clearly written book Includes the latest developments in modern laser techniques, such as cavity ring-down spectroscopy and femtosecond lasers Provides numerous worked examples, calculations and questions at the end of chapters.

  18. Unificación de subunidades estéticas de la mama en reconstrucción autóloga postmastectomia

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    M. Mendieta-Espinosa

    2015-12-01

    Full Text Available La restauración de la mama es un componente esencial en el tratamiento curativo del cáncer tras la mastectomía, ya que una cicatriz o una reconstrucción con malos resultados estéticos se traducen para la mujer en un recordatorio constante de la enfermedad. Para la reconstrucción de mama planteamos un modelo según subunidades estéticas, ya que en ella se encuentran distintos componentes y diferentes distribuciones de volúmenes que caracterizan a cada mama en particular según el hábito corporal de la paciente. Nuestro objetivo es no ver la mama como un montículo único, sino compuesto por distintas subunidades que pueden ser restauradas con un adecuado posicionamiento de los colgajos autólogos. Realizamos un total de 32 reconstrucciones mamarias con colgajos basados en el abdomen para la restauración e integración de sus subunidades estéticas, ya que los colgajos abdominales brindan la ventaja de poder ser moldeados según las necesidades, particularidad que no ofrecen los materiales aloplásticos, y así poder lograr una transición suave de la mama a la pared torácica. La reconstrucción del complejo areola pezón y los procedimientos de simetrización de la mama sana como reducción o mastopexia, los efectuamos 6 meses después del procedimiento inicial, utilizando las mismas subunidades para valorar el resultado así como para mejorar las zonas de continuidad mediante la aplicación de lipoinyección grasa o revisión de cicatrices. De las 32 reconstrucciones autólogas realizadas, 28 obtuvieron un adecuado contorno del colgajo, continuidad con la pared torácica, y un adecuado posicionamiento del surco submamario, con buena simetría de la mama contralateral. En 4 reconstrucciones no logramos la adecuada unificación de las subunidades: en 2 hubo una apariencia del colgajo en parche, y en 2 quedó un posicionamiento muy bajo del nuevo surco submamario. El enfoque del principio de subunidades propuesto para la reconstrucci

  19. Plaguicidas y cáncer de mama en mujeres cordobesas Pesticides and breast cancer in women from Cordoba

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    M. L. Jodral Villarejo

    2001-06-01

    Full Text Available La exposición a contaminantes ambientales constituye en la actualidad un problema importante en salud pública, sobre todo con respecto al papel que dichos tóxicos juegan como carcinogenéticos. Este hecho junto con la incidencia creciente del cáncer de mama en España y de que no existe una relación clara entre esta patología y la exposición a plaguicidas, conduce a plantearnos evaluar el papel de los plaguicidas como factor de riesgo en el cáncer de mama en mujeres cordobesas.Se realiza un estudio de casos-controles en 134 mujeres que fueron sometidas a intervenciones quirúrgicas por lesiones mamarias en el Hospital Universitario Reina Sofía de Córdoba. A todas se les realiza un cuestionario, así como un estudio anatomopatológico y determinaciones en grasa mamaria de cuatro plaguicidas (HCB, HCH, p,p’DDE y Aldrín mediante cromatografía de gases.Tras el estudio anatomopatológico se estableció que 69 presentaban lesiones malignas (casos y 65 lesiones benignas (controles. Las determinaciones analíticas respecto a los 4 plaguicidas, detectan niveles elevados de p,p’DDE en todas las muestras, seguidas del HCB y Aldrín y en menores niveles y muestras se detecta el HCH.El análisis univariante detectó la edad, duración de la lactancia y niveles de Aldrín como factores de riesgo en las lesiones malignas, pero el análisis multivariante identificó los niveles del pesticida Aldrín como el factor más significativo en dichas lesiones (p Se establece la relación causal entre Aldrín y cáncer de mama, y se sugiere la necesidad de realizar nuevos estudios para eliminar los factores de confusión.Exposure to environmental contaminants is an important public health problem, specially because of its possible carcinogenic effect. The raising incidence of cancer breast in Spain, together with the absence of clear association between this pathology and exposure to pesticides motivated us to assess the possible etiological role of

  20. Riesgo de cáncer de mama en trabajadoras de turno nocturno Breast cancer risk in night female workers

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    Francisco Javier Fresneda Moreno

    2013-03-01

    Full Text Available Los estudios epidemiológicos más recientes a nivel mundial han puesto de manifiesto una asociación entre el trabajo nocturno (15-20% de los trabajadores y un aumento del riesgo de cáncer de mama, siendo esta, una patología de gran prevalencia y la primera causa de neoplasia en el sexo femenino. En el año 2007, la IARC consideró el trabajo nocturno como probable cancerígeno (categoría 2A. Los turnos nocturnos producen una disrupción del ritmo circadiano. La exposición a la luz artificial nocturna inhibe la síntesis de melatonina aumentando el estímulo estrogénico, e inhibiendo el efecto antimitótico, antiangiogénico y antioxidante de esta hormona, aumentando así el riesgo tumoral. Los objetivos son: identificar la evidencia científica existente entre la asociación trabajo nocturno y cáncer de mama, los factores intrínsecos/extrínsecos que pueden modificar la asociación causal, conocer desde el punto de vista científico la sostenibilidad de la melatonina en la chrono-disrupción y los factores de vulnerabilidad. Se ha realizado la búsqueda bibliográfica de artículos publicados entre 2006-diciembre 2012 (exceptuando un meta-análisis del 2005, en las siguientes bases datos: Medline, Wok, Lilacs, OSH, IBECS, Cochrane, Scopus y Embase. Se seleccionaron por nivel de evidencia y criterios de inclusión-exclusión un total de 15 artículos. Se sugiere la existencia de una asociación no concluyente entre el riesgo de cáncer de mama y trabajo nocturno, por lo que se deben seguir realizando estudios más precisos en diferentes tipos de profesiones, etnias, minimizando la posibilidad de sesgos.Recent epidemiological studies worldwide have shown an association between night shift (15-20% of workers and an increased risk of breast cancer, this being a highly prevalent disease and the leading cause of neoplasia in women. In 2007, the IARC considered night shift as a probable carcinogen (category 2A. Night shifts produce a circadian

  1. Mammary neoplasm inflammatory: clinic presentation: combined treatment value; Cancer inflamatorio de mama: presentacion clinica: valor de los tratamientos combinados

    Energy Technology Data Exchange (ETDEWEB)

    Viola Alles, A; Sabini Gaye, G; Barrios Herrera, E; Muse Sevrini, I

    1995-06-01

    On a total of 1152 patients bearing of cancer of she suckles tried in the period 1978-1988, 41 of she(3.5% )corresponding to the variety inflamatory. Her ages was understood between 26 and 73 years , was been 15(63,5% )postmenopause. Clinically they presented commitment mammary exclusive 34,1%, invasion ganglionar lorregional 48,7% and 17% was disseminated remaining. The initial treatment bases on 3-4 cycles of chemotherapy type FCA, safe in patient with more years that they received the association CMF. All then were irradiated with dose of 5000-6000 cGy on she suckles and territories ganglionares. Finish the treatment with 6 to 8 additional cycles of the patients' chemotherapy. Nobody it was subjected to surgical. The middle survive of the population's total it was of 22 meses, has been of 26 for the premenopause and 15 for the posmenopause. The percentage of relapses arrive to 30% and 45% in the located ways they were disseminated during its evolution. It highlights that the therapeutic strategy you bases on the association open chemotherapy, radiotherapy remaining the possibility of the handling of high citostatics dose with or without transplants of osseous medulla osea (Author) [Spanish] Sobre un total de 1152 pacientes portadoras de cancer de mama tratadas en el periodo 1978-1988, 41 de ellas(3.5%)correspondieron a la variedad inflamatoria. Sus edades estaban comprendidas entre 26 y 73 an os,siendo 15(63,5%) posmenopausicas. Clinicamente presentaron compromiso mamario exclusivo 34,1%, invasion ganglionar lorregional 48,7% y estaban diseminadas 17% resptantes. El tratamiento inicial se baso en 3-4 ciclos de quimioterapia tipo FCA, salvo en pacientes anosas que recibieron la asociacion CMF. Todas ellas luego se irradiaron con dosis de 5000-6000 cGy sobre mama y territorios ganglionares. Se culmino el tratamiento con 6 a 8 ciclos adicionales de quimioterapia. Ninguna de las pacientes fue sometida a cirugia. La sobrevida media del total de la poblacion fue de 22

  2. Sintomatología depresiva y calidad de vida en pacientes mujeres con cáncer de mama

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    Rubén Valle

    2006-10-01

    Full Text Available Introducción: Las pacientes con cáncer de mama tienden a desarrollar algún tipo de trastorno psiquiátrico, principalmente depresión. Una manera de evaluar cómo las pacientes conllevan su enfermedad es a través de la calidad de vida. Objetivos: Determinar la prevalencia de sintomatología depresiva y calidad de vida y sus asociaciones con el tiempo desde el diagnóstico y el estado menopáusico. Diseño: Estudio analítico, observacional y transversal. Lugar: Servicio de Oncología del Hospital Arzobispo Loayza. Participantes: Mujeres con diagnóstico clínico e histológico de cáncer de mama que acudieron para tratamiento con quimioterapia. Intervenciones: Se utilizó el inventario de depresión de Beck, la escala de calidad de vida de Mezzich y Cohen y un cuestionario demográfico. El análisis fue realizado con la prueba exacta de Fisher, t de student y regresión lineal. Principales medidas de resultados: Sintomatología depresiva, calidad de vida. Resultados: Se encuestó 24 pacientes, encontrándose una prevalencia de 38% de sintomatología depresiva y 38% de baja calidad de vida. No se halló asociación significativa de sintomatología depresiva y nivel de calidad de vida con alguno de los factores asociados, excepto en la relación de este último con el grado de instrucción de la paciente, con un OR de 11,2 (p= 0,047, IC 95% 0,99 a 125,6. Conclusiones: Se encontró una prevalencia de 38% de sintomatología depresiva y 38% de baja calidad de vida. El tiempo desde el diagnóstico y estado menopáusico no tuvieron una asociación significativa con la sintomatología depresiva y la calidad de vida. El único factor asociado significativamente con la calidad de vida fue el grado de instrucción.

  3. Estrogens and breast cancer Los estrógenos y el cáncer de mama

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    SUSAN E HANKINSON

    1997-07-01

    Full Text Available In this review, we summarize the epidemiologic evidence for the associations of oral contraceptives and postmenopausal hormones with risk of breast cancer. We also describe the biologic plausibility of these relationships. Overall, there appears to be little, if any, increase in risk with oral contraceptive use in general, even among users for 10 or more years. However, compared to never users, current oral contraceptive users appear to have a modest elevation in risk that subsides within about 10 years after cessation of use. For postmenopausal hormones, the weight of the evidence suggests little or no increase in risk among users of short duration, or for use in the past. However, current longer term use is associated with an increased risk of breast cancer that increases with duration. This increase in risk is large enough, and well enough supported, to be considered along with the other risks and benefits of postmenopausal hormone therapy.Se presenta una revisión de la evidencia epidemiológica para la asociación de consumo de anticonceptivos orales y hormonas de suplementación hormonal en la posmenopausia, y el riesgo de cáncer de mama (CM. Se discute también la plausibilidad biológica de esta posible relación. Se hace énfasis, en la escasa evidencia, si existe, del incremento de riesgo de cáncer de mama con el uso de anticonceptivos orales por un periodo mayor de 10 años. Sin embargo, comparando las mujeres que no tienen el antecedente de consumo de hormonales anticonceptivos, con las que si lo tienen, existe un leve incremento de riesgo de CM que persiste aún 10 años de haber suspendido la ingesta. Para mujeres que consumen suplementos de reemplazo hormonal en la posmenopausia, existe un escaso o nulo incremento en el riesgo de CM, entre usuarias de corta duración, o de uso en el pasado. Mujeres con antecedentes de consumo de hormonales de reemplazo incrementan el riesgo de CM, el cual se incrementa con la duración. Por esta

  4. Factores pronósticos del cáncer de mama Prognostic factors of breast cancer

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    José María González Ortega

    2011-03-01

    Full Text Available Los factores pronósticos se deben diferenciar de los factores predictivos. Un factor pronóstico es cualquier medición utilizable en el momento de la cirugía que correlaciona con el intervalo libre de enfermedad o supervivencia global en ausencia de tratamiento adyuvante sistémico y como resultado es capaz de correlacionar con la historia natural de la enfermedad. En contraste, un factor predictivo es cualquier medición asociada con respuesta a un tratamiento dado. Entre los factores pronósticos del cáncer de mama existen factores clínicos, histológicos, biológicos, genéticos y psicosociales. En esta revisión de los factores pronósticos psicosociales ha quedado demostrado que el estrés y la depresión son factores pronósticos negativos en las pacientes con cáncer de mama. Se debe recordar que la evaluación de un solo parámetro pronóstico ayuda, pero no es útil para la gestión clínica y terapéutica de la paciente.The prognostic factors must to be differentiated of the predictive ones. A prognostic factor is any measurement used at moment of the surgery correlated with the free interval of disease or global survival in the absence of the systemic adjuvant treatment and as result is able to correlate with the natural history of the disease. In contrast, a predictive factor is any measurement associated with the response to a given treatment. Among the prognostic factors of the breast cancer are included the clinical, histological, biological, genetic and psychosocial factors. In present review of psychosocial prognostic factors has been demonstrated that the stress and the depression are negative prognostic factors in patients presenting with breast cancer. It is essential to remember that the assessment of just one prognostic parameter is a help but it is not useful to clinical and therapeutic management of the patient.

  5. Metástasis cutánea de carcinoma mamario: cáncer de mama en coraza. Revisión de la literatura y presentación de un caso

    Directory of Open Access Journals (Sweden)

    Lidia Torres Aja

    2012-09-01

    Full Text Available En la evolución clínica de los tumores malignos, entre el 1 y el 10,4 % de estos se presentan metástasis cutáneas, por lo que se considera su presencia sinónimo de enfermedad rápidamente progresiva con bajos índices de supervivencia. En los varones, el tumor que más suele producirlas es el de pulmón y en las mujeres, el de mama. Es poco frecuente que la metástasis en la piel sea la primera manifestación del tumor, y es el carcinoma de mama el que con mayor frecuencia da lugar a esta eventualidad. En el caso que se presenta fue la metástasis en la piel la primera manifestación del tumor primario de mama subyacente.

  6. Laser spectroscopy

    CERN Document Server

    Demtröder, Wolfgang

    Keeping abreast of the latest techniques and applications, this new edition of the standard reference and graduate text on laser spectroscopy has been completely revised and expanded. While the general concept is unchanged, the new edition features a broad array of new material, e.g., ultrafast lasers (atto- and femto-second lasers) and parametric oscillators, coherent matter waves, Doppler-free Fourier spectroscopy with optical frequency combs, interference spectroscopy, quantum optics, the interferometric detection of gravitational waves and still more applications in chemical analysis, medical diagnostics, and engineering.

  7. Quality assurance programme in mammography of the Sociedad Espanola de Diagnosticos por Imagen de la Mama (SEDIM)

    International Nuclear Information System (INIS)

    Fernandez, B.; Gonzalez, C.; Hernando, I.; Iribar, M.; Lopez, J.A.; Salvador, R.; Vega, A.; Vizcaino

    2001-01-01

    The European Union Council Directive 97/43/Euratom of 30 June 1997 on health protection of individuals against the dangers of ionizing radiation in relation to medical exposure has been partially transposed to the Spanish national law by the Real Decreto 1976/1999, which establishes the quality criteria in Diagnostic Radiology. A key instrument in this legal regulation is the so-called Quality Assurance Program (QAP) which has to be implemented in each Diagnostic Radiology unit. The Spanish Breast Imaging Diagnostic Society (Sociedad Espanola de Diagnostico por Imagen de la Mama, SEDIM) has proposed a reference QAP to be used as a guide in all the mammography units in the country. Its main issues are displayed in the present paper. The SEDIM QAP includes some items related to justification and optimization of mammography exams as well as a proposal for the assignment of functions and responsibilities. A guide for the image and technical parameters quality evaluation is also included. Some keys on equipment acquisition, maintenance and on continuing education and information management can also be found in that document. (author)

  8. Caracterização do perfil clínico, laboratorial, citológico e histopatológico em cadelas portadoras de tumor da mama submetidas à mastectomia.

    OpenAIRE

    Michelle Suassuna de Azevedo Rêgo

    2011-01-01

    Com o aumento da expectativa de vida dos cães, os tumores da mama tem se tornado uma patologia cada vez mais frequente na Medicina Veterinária e se faz necessário uma abordagem clínica precoce para que a terapêutica seja eficaz e proporcione melhor qualidade de vida e prolongamento do tempo de sobrevida. Diante da alta incidência, esta pesquisa teve como objetivo caracterizar clínica, laboratorial, citológica e histopatologicamente os tumores da mama de cadelas sem predileção de raça, idade, ...

  9. Valor pronóstico del análisis de marcadores moleculares mediante proteómica dirigida en cáncer de mama precoz con receptores hormonales positivos

    OpenAIRE

    Martinez del Prado, María Purificación

    2018-01-01

    Tesis doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Medicina, Departamento de Medicina. Fecha de lectura: 22-03-2018 Introducción: El cáncer de mama (CM) es una enfermedad heterogénea a nivel molecular. La proteómica dirigida permite la investigación de potenciales biomarcadores, factores pronósticos, predictivos, diagnósticos y nuevas dianas terapéuticas en el cáncer de mama. En una serie inicial de pacientes (cohorte de descubrimiento) con CM, receptores hormon...

  10. Depressão e ansiedade nos cuidadores de mulheres em fase terminal de câncer de mama e ginecológico Depression and anxiety in caregivers of terminally-ill breast and gynecological cancer patients

    OpenAIRE

    Vera Lucia Rezende; Sophie Françoise Mauricette Derchain; Neury José Botega; Luis Otávio Sarian; Daniela Landulfo Vial; Sirlei Siani Morais

    2005-01-01

    OBJETIVO: avaliar a freqüencia de ansiedade e depressão em cuidadores principais de mulheres em fase terminal de câncer de mama ou genital. MÉTODOS: para este estudo de corte transversal foram incluídos 133 cuidadores de pacientes sem possibilidades curativas, internadas no Centro de Atenção Integral à Saúde da Mulher, entre agosto de 2002 e maio de 2004. Das pacientes incluídas, 71 apresentavam câncer de mama e 62, câncer ginecológico. Foi aplicada a Escala Hospitalar de Ansiedade e Depressã...

  11. Ansiedade no período pré-operatório de cirurgias de mama: estudo comparativo entre pacientes com suspeita de câncer e a serem submetidas a procedimentos cirúrgicos estéticos

    OpenAIRE

    Alves, Maria Luiza Melo; Pimentel, Adriana Jucá; Guaratini, Álvaro Antônio; Marcolino, José Álvaro Marques; Gozzani, Judymara Lauzi; Mathias, Ligia Andrade da Silva Telles

    2007-01-01

    JUSTIFICATIVA E OBJETIVOS: A avaliação da ansiedade não faz parte da rotina da avaliação pré-anestésica (APA), o que faz com que situações especiais em que o estado emocional dos pacientes possa estar alterado, passem despercebidas pelo anestesiologista. Este estudo visou comparar, no momento da APA ambulatorial, fatores de risco, intensidade e prevalência de ansiedade em pacientes com suspeita de câncer de mama e a serem submetidas a procedimentos cirúrgicos estéticos de mama. MÉTODO: Após a...

  12. Perfil de risco imunológico de idosas com câncer de mama: os primeiros 37 casos = Immune risk profile of elderly women with breast cancer: the first 37 cases

    Directory of Open Access Journals (Sweden)

    Vollbrecht, Betina

    2014-01-01

    Conclusões: A relação das células T CD4+/CD8+ parece aumentar nos casos de câncer de mama de pior prognóstico. Tanto quanto foi possível pesquisar na literatura, estes são os primeiros dados sobre células T CD4+ e CD8+ no sangue periférico de mulheres idosas com câncer de mama. Um seguimento maior poderá determinar o valor destas células como fator prognóstico e/ou preditivo

  13. Laser spectroscopy

    International Nuclear Information System (INIS)

    Letokhov, V.S.

    1981-01-01

    This article describes recent progress in the application of laser atomic spectroscopy to study parameters of nuclei available in very small quantities; radioactive nuclei, rare isotopes, nuclear isomers, etc, for which study by conventional spectroscopic methods is difficult. (author)

  14. Fluorescence spectroscopy

    DEFF Research Database (Denmark)

    Bagatolli, Luis

    2016-01-01

    Fluorescence spectroscopy is a powerful experimental tool used by scientists from many disciplines. During the last decades there have been important developments on distinct fluorescence methods, particularly those related to the study of biological phenomena. This chapter discusses the foundati......Fluorescence spectroscopy is a powerful experimental tool used by scientists from many disciplines. During the last decades there have been important developments on distinct fluorescence methods, particularly those related to the study of biological phenomena. This chapter discusses...

  15. Lipídio: fator de risco e prevenção do câncer de mama Lipid: risk factor and breast cancer prevention

    Directory of Open Access Journals (Sweden)

    Gabriela Herrmann Cibeira

    2006-02-01

    Full Text Available A hipótese de que uma dieta rica em gordura promova o desenvolvimento do câncer de mama na menopausa é fortalecida por estudos caso-controle, que mostram forte associação positiva entre uma dieta rica em lipídios e as taxas de incidência de câncer de mama. Por outro lado, a ingestão dietética de gordura não parece estar relacionada com o risco de câncer de mama em estudos de coorte. Em vista desses achados conflitantes, tem sido difícil propor qualquer recomendação nutricional para a prevenção do câncer de mama. Estudos com animais e observações recentes em humanos, entretanto, têm mostrado evidências de que a dieta rica em ácido graxo linoléico estimula vários estágios no desenvolvimento de câncer mamário. Alguns estudos ainda mostram que o óleo de peixe, constituído de ácidos graxos ômega-3, parece prevenir o câncer pela influência sobre a atividade de enzimas e proteínas relacionadas à proliferação celular. Assim, são necessários estudos epidemiológicos que integrem as interações de ácidos graxos específicos com o catabolismo hormonal, fatores nutricionais protetores e de risco relacionados com o câncer de mama. Nesse trabalho, abordaremos os fatores protetores, de risco e as implicações quali e quantitativas dos ácidos graxos da dieta sobre o câncer de mama.The hypothesis that a high fat diet promotes the development of postmenopausal breast cancer is supported by case-controls studies that show a strong correlation between fat intake and breast cancer rates. On the other hand, high fat intake is not correlated with breast cancer in cohort studies. In view of these conflicting findings, it has been difficult to propose nutritional recommendations for the prevention of breast cancer. Animal studies and recent observations in humans have shown that a diet high in polyunsaturated fatty acids stimulates several stages in the development of mammary cancer. Some evidences show that fish oil

  16. Hipertrofia Maciça das Mamas na Gravidez: Relato de Caso Massive Hypertrophy of the Breasts in Pregnancy: A Case Report

    Directory of Open Access Journals (Sweden)

    Amadeu Ramos da Silva Filho

    2002-07-01

    Full Text Available A hipertrofia maciça das mamas na gestação é uma situação rara, com poucos casos descritos na literatura. Apesar de a etiologia ser desconhecida, parece tratar-se de resposta exagerada dos receptores da mama aos hormônios gravídicos. Embora possa ocorrer em qualquer gravidez apresenta alta taxa de recorrência nas gestações subseqüentes. O rápido e descomunal aumento mamário determina, além da dor, o comprometimento do esqueleto e musculatura das espáduas. O excessivo crescimento pode provocar necrose da pele com formação de úlceras, favorecendo grave infecção das glândulas. Os autores relatam um caso ocorrido em secundigesta, expondo a conduta durante a gravidez e a inibição da lactação com uso da bromocriptina imediatamente após o parto, com enfaixamento das mamas elevadas. Realçam também a importância da mamoplastia redutora poucos meses após o parto.Massive hypertrophy of the breast in pregnancy is a rare condition, with few cases reported. In spite of the unknown etiology, it seems to be an exaggerated response of the breast receptors to the pregnancy hormones. Although it can happen in any pregnancy, it presents great capacity to recur in all subsequent pregnancies. The rapid and colossal breast enlargement determines pain and the involvement of the shoulder skeleton and muscles. The excessive enlargement may promote necrosis and ulceration of the skin, leading to breast infection. The authors report one case at the second pregnancy, explaining management during the pregnancy, lactation inhibition with bromocriptine immediately after the delivery and the banding of the elevated breast. They also emphasize the importance of reduction mammoplasty a few months after delivery.

  17. ATUAÇÃO FISIOTERAPÊUTICA EM PACIENTES PÓS-CIRURGIA DO CÂNCER DE MAMA: UMA REVISÃO BIBLIOGRÁFICA

    Directory of Open Access Journals (Sweden)

    Denilson de Queiroz Cerdeira

    2014-06-01

    Full Text Available O câncer de mama é a neoplasia de maior ocorrência entre as mulheres, sendo considerado um problema de saúde pública. Consequentemente é uma das causas de morbidade e mortalidade na mulher. Objetivou-se buscar informações sobre a atuação da Fisioterapia em pacientes pós-cirurgia de câncer de mama, conhecendo os aspectos desta atuação e como tem sido empregado na documentação bibliográfica. Tratou-se de uma pesquisa bibliográfica no período correspondente aos últimos 15 anos (1998 a 2013, nas bases Medline, Lilacs, Scielo, Pubmed e PEDro, utilizando-se as palavras chave: Oncologia, Fisioterapia, Reabilitação, Mastectomia. Foram incluídos na pesquisa estudos de sujeitos com idade superior a 18 anos, idioma inglês, português e espanhol. Foram excluídos artigos que não descreviam a atuação da Fisioterapia adequadamente e estudos de casos. Foram encontrados 337 artigos, dos quais 30 foram selecionados, sendo 08 artigos de revisão, 13 estudos transversais e 09 ensaios clínicos. A revisão de literatura evidenciou a importância do tratamento fisioterapêutico em pacientes no pós - operatório de câncer de mama. Os estudos demonstram que a Fisioterapia desempenha um papel fundamental na prevenção ou diminuição de possíveis sequelas advindas do pós-operatório, como complicações respiratórias, circulatórias e osteomioarticulares.

  18. Factores pronósticos del Cáncer de Mama en servicio de Oncología del Hospital General Camilo Cienfuegos. Enero 2007–2012

    Directory of Open Access Journals (Sweden)

    Yania Luisa Jiménez Madrigal

    2015-09-01

    Full Text Available Se analizaron 200 pacientes con diagnóstico de cáncer de mama, en un período de 5 años (Enero 2007 a Enero 2012 que fueron diagnosticados y tratados en la consulta especializada de mama en el Servicio de Oncología del Hospital Universitario de Sancti-Spíritus. Se estudiaron los factores pronósticos relacionados con el tumor primario, la presencia de ganglios metastásico, el tratamiento efectuado, el tiempo libre de enfermedad y el tiempo de sobrevida. Se comprobó en nuestra serie el predominio de pacientes con 60 años y más, con localización más frecuente en la mama izquierda, y el cuadrante superior-externo fue el sitio mamario más afectado. Los factores pronóstico significativos y de mayor relevancia en cuanto al tiempo libre de enfermedad y tiempo de sobrevida fueron: tamaño tumoral, status ganglionar, infiltración periganglionar y la determinación de la hormono dependencia. Se demostró que en la medida que aumenta el tamaño del tumor primario (T y la afectación ganglionar regional (N, la etapa clínica sea más avanzada y los ganglios axilares en la pieza quirúrgica metastásicos condicionan que exista mayor posibilidad de que ocurra recurrencia tumoral, con una incidencia mayor a presentar metástasis a distancia y que ocurra la muerte en estas pacientes.

  19. Lipoestructura y relleno del polo superior de la mama frente a implantes Structural fat graft and lipofilling of mammary upper pole versus mammary implants

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    J.M. Cervilla Lozano

    2012-09-01

    Full Text Available La lipoestructura mamaria ofrece nuevas alternativas de tratamiento en la cirugía estética de aumento mamario, cumpliendo en algunos casos las expectativas esperadas y en otros no. Analizamos este hecho en 4 tipos de aplicación de lipoestructura mamaria que hemos venido realizando en los últimos años, centrándonos en un aspecto importante de esta cirugía que es el relleno del polo superior de la mama. Los tipos de aplicación empleados son: aumento mamario simple mediante lipoestructura en comparación con implantes; pexia más lipoestructura frente a pexia más implantes mamarios; reconstrucción de mama tuberosa mediante lipoestructura o implantes y finalmente, relleno periprotésico mediante lipoestructura en mamas sometidas a cirugía de aumento mamario con implantes. En definitiva, podríamos resumir este trabajo en una frase diciendo que la lipoestructura mamaria, a nuestro juicio, no sirve si lo que prima es conseguir el relleno del polo superior de la mama, siendo en este caso de elección la colocación de implantes mamarios. No obstante, en alguno de los casos señalados no solo es una alternativa, sino que obtiene resultados superiores a los logrados sólamente con implantes.The mammary structural fat graft offers news treatment options in breast augmentation cosmetic surgery, but it sometimes meets expectations and sometimes doesn´t. We analyze 4 different types of lipostructure mammary applications that we have been using in the last years, focused in an important aspect of this surgery as it´s the filling of the upper mammary pole. These applications are: mammary augmentation by simple structural fat compared with the use of mammary implants; structural fat graft and mastopexy versus implants and mastopexy; tuberous breast reconstruction using structural fat graft or implants and finally, periprosthetic filling in breast augmentation with mammary implants using structural fat graft. In short, we could summarize this paper

  20. Detección de linfocitos T citotóxicos específicos anti-53 en pacientes con cáncer de mama

    OpenAIRE

    Álvarez Busto, Iñaki; Tres Sánchez, Alejandro; Mayordomo Cámara, José Ignacio

    2009-01-01

    El gen P53 es el más frecuentemente mutado en tumores humanos ( 50%). Su proteina producto, la proteina P53, se acumula cuando sufre una mutación. Esta circunstancia posibilita su presentación al sistema inmunológico y el desarrollo de una respuesta celular específica medida por linfocitos T CD8. En este trabajo por primera vez, ha sido posible desarrollar la existencia de una respuesta inmune celular específica "in vivo" en pacientes con cancer de mama. Las implicaciones de este hallazgo par...

  1. Qualidade de vida, estado nutricional e consumo alimentar de mulheres com câncer de mama em tratamento quimioterápico

    OpenAIRE

    Juliana Scheibler; Flávia Moraes Silva; Thaís Rodrigues Moreira; Fernanda Scherer Adami

    2016-01-01

    Objetivo: Avaliar a qualidade de vida, o estado nutricional e o consumo alimentar de mulheres diagnosticadas com câncer de mama em quimioterapia. Métodos: Estudo transversal e analítico envolvendo 70 mulheres, de 30 a 59 anos, em um hospital do Rio Grande do Sul, no período de maio a outubro de 2015. Aplicou-se o questionário European Organization for Research and Treatment of Câncer Quality of Life Questionnaire C30 (EORTC QLQ- C30). As variáveis antropométricas coletadas foram: peso atual, ...

  2. Estrés nitrosativo y alteración de la homeostasis de S-Nitrosotioles en cáncer de mama: implicaciones terapeúticas

    OpenAIRE

    Cañas Rodríguez, Amanda

    2015-01-01

    El cáncer de mama es la neoplasia más frecuente en la mujer y una de las principales causas de mortalidad femenina. Es una enfermedad heterogénea, con diversas histopatologías, variaciones genéticas y genómicas, así como respuestas clínicas diferentes. Generalmente en tumores se detectan niveles elevados de óxido nítrico (NO) comparado con el tejido sano circundante, y las modificaciones de proteínas inducidas por el NO, y en concreto la Snitrosilación, pueden constituir un ...

  3. Efectos de un programa de inteligencia emocional en la ansiedad y el autoconcepto en mujeres con cáncer de mama

    OpenAIRE

    Cejudo, Javier; García-Maroto, Sagrario; López-Delgado, Mari Luz

    2017-01-01

    Resumen El estudio tiene como objetivo evaluar los efectos de un programa de inteligencia emocional en la ansiedad y el autoconcepto en mujeres con cáncer de mama sometidas a cirugía. Se utilizó una muestra de 81 mujeres, 39 pertenecientes al grupo de intervención y 42 al grupo control. El estudio utilizó un diseño cuasiexperimental de medidas repetidas pretest-postest con grupo de control. Para evaluar el efecto del programa se administraron tres instrumentos de evaluación, el TMMS-24, Ferná...

  4. Avaliação da qualidade de vida em mulheres com cancro da mama: Estudo exploratório com 55 mulheres angolanas

    OpenAIRE

    Duarte, Ilda da Conceição Afonso Sebastião

    2013-01-01

    Dissertação de Mestrado em Psicologia da Saúde apresentada ao ISPA - Instituto Universitário Objetivo: Avaliar a QDV das mulheres angolanas, diagnosticadas com cancro da mama, tratadas no Centro Nacional de Oncologia (CNO)/Luanda e identificar o papel das variáveis sociodemográficas e clínicas, uma vez que as causas da observância desproporcional da morbimortalidade entre mulheres brancas e negras com essa doença, ainda não estão bem definidas, e as desvantagens apontadas na li...

  5. Programa educativo dirigido a pacientes con cáncer de mama que reciben quimioterapia ambulatoria en el Centro Oncológico Estatal ISSEMYM

    OpenAIRE

    Gutierrez García, Edna Jannet

    2014-01-01

    El cáncer de mama es un crecimiento irregular de células anómalas del tejido mamario; en México es la segunda causa de muerte. El Centro Oncológico Estatal (COE) del ISSEMYM brinda tratamiento al 70% de la población femenina que es diagnosticada con este padecimiento, incluye tanto a las pacientes derechohabientes como a las pacientes atendidas en el programa de seguro popular, diagnosticadas en su unidad adscrita; para fines de esta investigación, se consideró únicamente la quimioterapia...

  6. Arte, política y redes transnacionales: el teatro La Mama en Nueva York y Bogotá, 1961-1972

    Directory of Open Access Journals (Sweden)

    Paulo Cesar Leon Palacios

    2015-03-01

    Full Text Available The article analyzes a transnational network of artistas that involved El Café Teatro La Mama, one of the main experimental theaters of New York, and its Bogota subsidiary, from 1961 to 1972. Three main lines make it possible to narrate the establishment, development and rupture of said network: the theater as a cultural practice, the relation between avant-garde art and politics, and the emotional dimension of the process. The main conclusion of this research is that there has been a prolific correspondence of ideas around some paradigms of contemporary vanguard theater but, at the same time, an ambivalence between artistic romanticism and political values.

  7. Recursos disponibles para el tratamiento del cáncer de mama en México Available resources for the treatment of breast cancer in Mexico

    Directory of Open Access Journals (Sweden)

    Alejandro Mohar

    2009-01-01

    Full Text Available OBJETIVO: Describir los recursos existentes para el tratamiento del cáncer de mama en México. MATERIAL Y MÉTODOS: Se recolectó información de 23 Centros Estatales de Cáncer (CEC, dos hospitales federales y el Instituto Nacional de Cancerología. Este estudio se realizo en México, DF, en agosto y septiembre del año 2008. RESULTADOS: Los 23 CEC ofrecen atención médica para el cáncer de mama, incluidos cirugía, quimioterapia y radioterapia, todos ellos acreditados por el Seguro Popular. Las cuotas de recuperación se definieron por etapa clínica, desde 27 500 pesos para la etapa clínica cero hasta 480 000 pesos en pacientes con enfermedad avanzada. Se ha atendido a 2 689 pacientes con cáncer de mama; sólo 1% se presentó con carcinoma in situ CONCLUSIONES: Se tiene la infraestructura y los recursos médicos para el óptimo tratamiento, pero los costos son altos debido al diagnóstico tardío. La detección oportuna del cáncer de mama es una prioridad para el óptimo control de esta enfermedad en México.OBJECTIVE: Describe the resources for the treatment of breast cancer in Mexico. METHODS: Information was obtained from 23 Centros Estatales de Cáncer (State Cancer Centers, CEC, two federal hospitals and Cancerología. This study was performed in Mexico City in August/September of 2008. RESULTS: These 23 centers provide medical care for breast cancer including surgery, chemotherapy and radiotherapy; all of them validated by the Seguro Popular. The costs were defined according to clinical stage and ranged from $27,500.00 pesos for clinical stage 0 to $480,00.00 in the advanced stage. A total of 2 689 women with breast cancer have been treated; only 1% was reported with in situ carcinoma. CONCLUSIONS: An adequate medical infrastructure is in place to treat breast cancer in Mexico. The costs are high due to late diagnosis of the disease. Early detection of breast cancer is a high priority for optimal control of this disease in Mexico.

  8. Detección y tipificación de virus del papiloma humano en biopsias de carcinoma ductal infiltrante y lesiones benignas de mama en mujeres venezolanas

    OpenAIRE

    Solorzano, Marisé; Bastidas, Marco; Quintero, Militza; Rojas, Lisbeth; Stea, Domingo; Villasmil, Saúl; Acosta, Víctor; Marín, Carmen; Ramírez, Ana; Blanco, Natasha; Cruz, Jhon; Puig, Juan

    2016-01-01

    Objetivo: Realizar la detección y tipificación del virus del papiloma humano (VPH) en muestras de biopsias de tejido mamario con carcinoma ductal infiltrante. Métodos: Estudio descriptivo de corte transversal de 57 biopsias de carcinoma ductal infiltrante, y 41 biopsias de lesiones benignas de mama de pacientes venezolanas, estas fueron evaluadas utilizando la técnica PCR-RFLP en busca de la presencia del genoma del virus de papiloma humano. El riesgo OR fue evaluado mediante análisis estadís...

  9. Características de pacientes con cáncer de mama diagnosticado en el año 2013 en el municipio de Las Tunas

    Directory of Open Access Journals (Sweden)

    Enrique Nicolás Milián Mosquera

    2015-06-01

    Full Text Available Fundamento: el cáncer de mama constituye la primera causa de muerte de las mujeres en el mundo. El diagnostico precoz y el tratamiento oportuno de las lesiones mamarias constituyen pilares fundamentales en la evolución y pronóstico de este tipo de cáncer. Objetivo: describir las características clínico-epidemiológicas de las pacientes con cáncer de mama del municipio de Las Tunas, provincia del mismo nombre, Cuba; en el periodo de enero a diciembre de 2013. Métodos: se realizó un estudio observacional-descriptivo y transversal. La población de estudio estuvo constituida por las 59 pacientes que se les diagnosticó cáncer de mama. Se estudiaron los antecedentes patológicos personales, antecedentes patológicos familiares de patología mamaria, menopausia, ingestión de hormonas y otros factores asociados. Se definió el BIRADS (por las siglas en inglés de Breast Imaging reporting and data system mamográfico y se determinó la etapa clínica en que estaban las pacientes cuando se realizó el diagnóstico. Para la recolección de la información fueron utilizados datos estadísticos, historias clínicas individuales, hojas de cargo y resultados de las biopsias y se procesaron por el método estadístico porcentual. Resultados: en la muestra predominó el grupo de edad entre los 50-59 años, los principales factores de riesgo asociados estuvieron relacionados con los antecedentes familiares de haber padecido esta enfermedad, la categoría mamográfica predominante fue la BIRADS IV, y la etapa clínica II. Conclusiones: el mayor por ciento de pacientes se diagnosticó de forma tardía, a pesar de los esfuerzos del sistema nacional de salud para aumentar la pesquisa del cáncer de mama.

  10. Conhecimento sobre o diagnóstico e rastreamento do câncer de mama entre os ginecologistas do estado de Goiás (Brasil

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    Freitas Júnior Ruffo de

    2003-01-01

    Full Text Available OBJETIVOS: Avaliar o nível de conhecimento sobre o rastreamento e diagnóstico do câncer de mama entre os ginecologistas do Estado de Goiás, Brasil. MÉTODOS: Foi enviado um questionário contendo perguntas sobre a formação profissional e sobre o diagnóstico do câncer de mama, para os 427 sócios da Sociedade Goiana de Ginecologia e Obstetrícia, entre maio e julho de 1999. RESULTADOS: Dos 427 questionários enviados, 26 (6% foram devolvidos por endereçamento incorreto. Dos 401 médicos que receberam o questionário, 85 (21% responderam e retornaram. Destes, 28% eram do sexo feminino, a média do tempo de profissão foi de 17 anos e 70% possuía a residência médica como maior titularidade. A média de idade foi de 44 anos. As taxas de respostas corretas foram: 94% sabiam o sinal mais freqüente do câncer de mama, 75% o melhor método para rastreamento, 88% o período de quando iniciar a mamografia, 93% a periodicidade da mamografia após os 50 anos e 83% sobre a indicação da ultra-sonografia complementar. O fato de o profissional ter cursado um programa de Residência Médica foi o único fator que influenciou na taxa de respostas corretas, se comparado àqueles que não cursaram. O sexo do profissional, portadores de Título de Especialista em ginecologia e obstetrícia (TEGO e a cidade de atuação não influenciaram nas taxas de respostas corretas. CONCLUSÕES: Os ginecologistas do Estado de Goiás que responderam ao questionário têm um bom conhecimento sobre o rastreamento e diagnóstico do câncer de mama, sendo que apenas a Residência Médica influenciou na taxa de respostas corretas.

  11. Qualidade de vida de pacientes com câncer de mama em terapia adjuvante Calidad de vida de pacientes con cáncer de mama en terapia adyuvante Quality of life of breast cancer patients in adjuvant therapy

    Directory of Open Access Journals (Sweden)

    Adriana Cristina Nicolussi

    2011-12-01

    Full Text Available O objetivo do estudo foi avaliar a Qualidade de Vida (QV, identificar os domínios afetados em pacientes com câncer de mama em terapia adjuvante e correlacioná-los com características sócio-demográficas, clínicas e terapêuticas. Estudo transversal, realizado com 35 pacientes entre agosto de 2007 e dezembro de 2008. Utilizou-se o instrumento Quality of Life Core-30-Questionnaire (QLQ-C30. A Qualidade de Vida geral foi considerada pouco satisfatória. Os domínios afetados foram: função emocional, insônia, dor e fadiga. Nas correlações, as pacientes acima de 60 anos apresentaram pior escore na função emocional, as submetidas à cirurgia referiram mais constipação, as que realizavam radioterapia obtiveram pior escore para QV geral e as que estavam em quimioterapia há mais de seis ciclos apresentaram a função emocional afetada e dispnéia. Concluiu-se que os tratamentos adjuvantes afetaram de algum modo as pacientes, causando déficit na função emocional e relataram mais sintomas, prejudicando assim sua QV.El objetivo fue evaluar la calidad de vida (CV, identificar los dominios afectados en pacientes con cáncer de mama en terapia adyuvante y correlacionarlos con las características socio-demográficas, clínicas y terapéuticas. Estudio transversal, con 35 pacientes, realizado entre agosto de 2007 y diciembre de 2008. Fue utilizado el instrumento Quality of Life Core-30-Questionnaire (QLQ-C30. La calidad de vida fue considerada poco satisfactoria. Los dominios más afectados fueron: función emocional, insomnio, dolor, fatiga. En las correlaciones, las pacientes con más de 60 años presentaron peores promedios en la función emocional, las pacientes que fueron sometidas a la cirugía refirieron más estreñimiento, las que recibían radioterapia presentaron peores promedios en CV general y las que habían recibido más de seis ciclos de quimioterapia presentaron la función emocional afectada y la disnea. Se concluyó que los

  12. Moessbauer spectroscopy

    International Nuclear Information System (INIS)

    Gonser, U.

    1975-01-01

    This book is addressed to persons interested in learning about what has been done and what can be done with Moessbauer spectroscopy. In an introductory chapter the basic principle is explained and the general parameters governing Moessbauer spectroscopy are tabulated. For the following chapters various disciplines are chosen and the wide applicability of this measuring technique is demonstrated. The second chapter discusses a few representative examples of chemical interesting information being reflected by isomer shifts and quadrupole splittings, particularly with respect to bonding and structural properties. The third chapter deals with some applications of Moessbauer spectroscopy for characterizing magnetic compounds and its use for magnetic structure investigations, particularly by making use of polarized radiation. The fourth chapter describes the use of the Moessbauer spectroscopy for studying iron in biological molecules. As an example of recent applications to mineralogy and geology the results of the studies of lunar samples are reviewed in the fifth chapter. Finally, in the last chapter, work is described on the use of Moessbauer spectroscopy in physical metallurgy, particularly quantitative analyses which have enabled metallurgists to solve many old problems. (orig./FW) [de

  13. Principle and application of low energy inverse photoemission spectroscopy: A new method for measuring unoccupied states of organic semiconductors

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, Hiroyuki, E-mail: hyoshida@chiba-u.jp

    2015-10-01

    Highlights: • Principle of low energy inverse photoemission spectroscopy is described. • Instruments including electron sources and photon detectors are shown. • Recent results about organic devices and fundamental studies are reviewed. • Electron affinities of typical organic semiconductors are compiled. - Abstract: Information about the unoccupied states is crucial to both fundamental and applied physics of organic semiconductors. However, there were no available experimental methods that meet the requirement of such research. In this review, we describe a new experimental method to examine the unoccupied states, called low-energy inverse photoemission spectroscopy (LEIPS). An electron having the kinetic energy lower than the damage threshold of organic molecules is introduced to a sample film, and an emitted photon in the near-ultraviolet range is detected with high resolution and sensitivity. Unlike the previous inverse photoemission spectroscopy, the sample damage is negligible and the overall resolution is a factor of two improved to 0.25 eV. Using LEIPS, electron affinity of organic semiconductor can be determined with the same precision as photoemission spectroscopy for ionization energy. The instruments including an electron source and photon detectors as well as application to organic semiconductors are presented.

  14. Principle and application of low energy inverse photoemission spectroscopy: A new method for measuring unoccupied states of organic semiconductors

    International Nuclear Information System (INIS)

    Yoshida, Hiroyuki

    2015-01-01

    Highlights: • Principle of low energy inverse photoemission spectroscopy is described. • Instruments including electron sources and photon detectors are shown. • Recent results about organic devices and fundamental studies are reviewed. • Electron affinities of typical organic semiconductors are compiled. - Abstract: Information about the unoccupied states is crucial to both fundamental and applied physics of organic semiconductors. However, there were no available experimental methods that meet the requirement of such research. In this review, we describe a new experimental method to examine the unoccupied states, called low-energy inverse photoemission spectroscopy (LEIPS). An electron having the kinetic energy lower than the damage threshold of organic molecules is introduced to a sample film, and an emitted photon in the near-ultraviolet range is detected with high resolution and sensitivity. Unlike the previous inverse photoemission spectroscopy, the sample damage is negligible and the overall resolution is a factor of two improved to 0.25 eV. Using LEIPS, electron affinity of organic semiconductor can be determined with the same precision as photoemission spectroscopy for ionization energy. The instruments including an electron source and photon detectors as well as application to organic semiconductors are presented.

  15. Optical Spectroscopy

    DEFF Research Database (Denmark)

    Thyrhaug, Erling

    The work presented in this thesis is broadly concerned with how complexation reactions and molecular motion can be characterized with the standard techniques in optical spectroscopy. The thesis aims to show a relatively broad range of methods for probing physico-chemical properties in fluorophore...... information about chemical equilibria, kinetics and molecular motion by monitoring changes in optical properties of the system. The five presented research projects are largely unrelated to each other both in aim and in what property is probed, however they are all connected in that they are fluorophore...... reactions by optical spectroscopy. In project 1 simple steady-state absorption and fluorescence spectroscopy is used to determine the stoichiometries and equilibrium constants in the inclusion complex formation between cyclodextrins and derivatives of the water-insoluble oligo(phenylene vinylene) in aqueous...

  16. Optogalvanic spectroscopy

    International Nuclear Information System (INIS)

    Pianarosa, P.; Demers, Y.; Gagne, J.M.

    1983-01-01

    Laser induced optogalvanic spectroscopy in a hollow cathode-produced plasma has been used to resolve the isotopic structure of some absorption lines in uranium. We have shown that the optogalvanic signal associated with any isotope can be related to the concentration of that isotope in a multi-isotopic sample. From the results we have obtained, optogalvanic spectroscopy of sputtered samples appears to be an interesting approach to the isotopic analysis of both natural and enriched uranium and could easily be applied to the analysis of other fissile elements, such as the plutonium isotopes

  17. Photoelectron spectroscopy

    International Nuclear Information System (INIS)

    Price, W.C.

    1974-01-01

    A survey is given of the development of x-ray and ultraviolet photoelectron spectroscopy. Applications of photoelectron spectroscopy to studies of atomic electronic configurations are discussed, including photoelectron spectra of hydrides isoelectronic with the inert gases; photoelectron spectra of the halogen derivatives of methane; photoelectron spectra of multiple bonded diatomic molecules; spectra and structure of some multiple bonded polyatomic molecules; spectra and structure of triatomic molecules; and methods of orbital assignment of bands in photoelectron spectra. Physical aspects are considered, including intensities; selection rules; dependence of cross section on photoelectron energy; autoionization; angular distribution of photoelectrons; electron-molecule interactions; and transient species. (26 figures, 54 references) (U.S.)

  18. Calcificações malignas da mama: correlação mamografia-anatomia patológica

    Directory of Open Access Journals (Sweden)

    Vianna Alberto Domingues

    2002-01-01

    Full Text Available Neste trabalho foram realizados 30 estudos de correlação entre os achados da mamografia e da anatomia patológica em 29 pacientes com tumores malignos na mama, cujas mamografias apresentaram calcificações relacionadas com as lesões. Os objetivos principais foram: verificar se as formas das calcificações corresponderam a tipos específicos de tumores e se as formas das calcificações estavam relacionadas aos locais onde eram formadas. Foram estudados dois aspectos objetivos das calcificações identificados nas mamografias: forma e distribuição. Este estudo concluiu que os carcinomas tipo comedo tiveram elevada freqüência de calcificações pleomorfas (95,5% e padrão de distribuição ductal em 66,5% dos casos. Os carcinomas tipo cribriforme, quando não associados ao tipo comedo, evidenciaram somente calcificações arredondadas em 66,5% dos casos e predominância de distribuição indefinida (78,5%. Os tumores micropapilares, quando não associados ao tipo comedo, mostraram somente calcificações arredondadas em 66,5% dos casos e predominância do padrão de distribuição indefinido (66,5%. Nenhum tumor mostrou padrão de distribuição lobular. Calcificações amorfas na ausência de nódulo tumoral são suspeitas de carcinoma ductal infiltrante. De acordo com o padrão histológico arquitetural dos 30 tumores, 24 (80% tiveram calcificações com as formas esperadas.

  19. RACISMO PRESENTE NA ANIMAÇÃO “SCRUB ME MAMA WITH A BOGGIE BEAT” DE WALTER LANTZ (1941

    Directory of Open Access Journals (Sweden)

    Julio Geraldo Carvalho de Jesus

    2017-01-01

    Full Text Available As Animações são fontes interessantes de serem exploradas pela perspectiva histórica, uma vez que trazem questões impostas pelo contexto da produção e podem ser utilizadas como meio de transmitir conhecimentos e ideologias. O presente artigo faz uma reflexão acerca do tema do racismo nas animações dirigidas e produzidas por Walter Lantz, no ano de 1941, tomando como base o cartoon “Scrube Me Mama with a Boogie Beat”, distribuído pela Universal Studios, e reexibido no ano de 1948. Apesar do racismo presente na obra, não há qualquer menção crítica ao filme, na época em que foi lançado, o que nos permitiu estabelecer um paralelo entre a animação de Lantz e a alegoria do açougue apresentada por Serguei Eisenstein no filme “A greve”. No filme de Eisenstein, a cena final mostra um boi sendo degolado. A violência da cena causou grande impacto na população urbana, mas não impactou da mesma forma os habitantes da zona rural, acostumados com a prática. Da mesma forma, a obra de Lantz, permeada de traços racistas, não causou indignação na população negra, sobretudo por ser comum dentro da sociedade norte americana da época.

  20. Câncer de mama: sentimentos e percepções das mulheres diante do diagnóstico / Breast cancer: feelings and perceptions of women before the diagnosis

    Directory of Open Access Journals (Sweden)

    Keli Regiane Tomeleri da Fonseca Pinto

    2018-04-01

    Full Text Available Objetivo: Conhecer os sentimentos e percepções das mulheres diante o diagnóstico de câncer de mama. Métodos: Trata-se de um estudo qualitativo, realizado no Ambulatório de Oncologia de um Hospital Universitário, junto à 11 mulheres com câncer de mama e idade entre 43 e 58 anos. A coleta de dados foi realizada por meio de entrevista semiestruturada, entre maio a julho de 2015. Os dados foram analisados e interpretados conforme a análise de conteúdo. Resultados: Após a análise emergiram quatro categorias: esperando pelo diagnóstico; sentimentos despertados após o diagnóstico; o apoio familiar; viver e orar após o diagnóstico de câncer de mama. Conclusão: O estudo mostrou que as mulheres já esperavam o diagnóstico de câncer, porém, mesmo dizendo estarem preparadas para tal diagnóstico, diante da notícia se sentiram aflitas, receberam apoio da família e também buscaram apoio religioso para enfrentar o difícil momento do diagnóstico do câncer de mama.

  1. Análisis de las mutaciones más frecuentes del gen BRCA1 (185delAG y 5382insC en mujeres con cáncer de mama en Bucaramanga, Colombia

    Directory of Open Access Journals (Sweden)

    María Carolina Sanabria

    2009-03-01

    Conclusión. Se requieren más estudios en la región que abarquen la tamización de la totalidad del gen BRCA1, para hacer una mayor contribución al conocimiento de la epidemiología molecular del cáncer de mama en Bucaramanga, Santander, Colombia.

  2. Raman spectroscopy

    Science.gov (United States)

    Raman spectroscopy has gained increased use and importance in recent years for accurate and precise detection of physical and chemical properties of food materials, due to the greater specificity and sensitivity of Raman techniques over other analytical techniques. This book chapter presents Raman s...

  3. Bioimpedance Spectroscopy

    DEFF Research Database (Denmark)

    Klösgen, Beate; Rümenapp, Christine; Gleich, Bernhard

    2011-01-01

    causes relaxation processes with characteristic contributions to the frequency-dependent complex dielectric constant. These dipolar relaxations were initially described by Debye (Polare Molekeln 1929). They are the basis of impedance spectroscopy (K’Owino and Sadik Electroanalysis 17(23):2101–2113, 2005...

  4. Efecto de las alteraciones genéticas, epigenéticas y expresión transcripcional de cadherina-E en la susceptibilidad al cáncer de mama

    Directory of Open Access Journals (Sweden)

    Andrés Felipe Aristizábal-Pachón

    2016-12-01

    Full Text Available Introducción. La cadherina-E (CDH1 cumple un papel importante en la transición epitelio-mesénquima y está relacionada con la invasión y metástasis en varios tipos de carcinomas. Sin embargo, el efecto de mutaciones y epimutaciones germinales en la susceptibilidad al cáncer de mama no es claro. Objetivo. Evaluar el polimorfismo rs5030625, cambios en el patrón de metilación del promotor y expresión transcripcional de CDH1 en pacientes con cáncer de mama. Materiales y métodos. Fueron colectadas muestras de sangre periférica de 102 pacientes con cáncer de mama y 102 mujeres control. La genotipificación del polimorfismo rs5030625 fue realizado a través de PCR-RFLP; la PCR y el análisis de disociación de alta resolución sensibles a metilación fueron usadas para determinar el estatus y semicuantificar el nivel de metilación del promotor de CDH1; finalmente, la RT-qPCR permitió evaluar el nivel de expresión transcripcional de CDH1. Resultados. Los resultados no mostraron asociación entre el polimorfismo rs5030625 y el cáncer de mama. Se encontraron perfiles aberrantes de metilación del promotor de CDH1, en las pacientes con cáncer de mama, relacionados con las primeras etapas de desarrollo del cáncer. La disminución de la expresión de CDH1 fue asociada con la presencia de metástasis y el estatus metilado del promotor. Conclusión. Alteraciones en CDH1 fueron relacionadas con invasión y metástasis en cáncer de mama, proporcionando evidencia adicional de la relevancia de CDH1 en el desarrollo y progresión del cáncer de mama.

  5. A SEXUALIDADE DA MULHER COM CÂNCER DE MAMA: ANÁLISE DA PRODUÇÃO CIENTÍFICA DE ENFERMAGEM

    Directory of Open Access Journals (Sweden)

    Simone Mara de Araújo Ferreira

    2013-01-01

    Full Text Available Revisión integrativa que tuvo por como objetivo analizar el conocimiento producido por la enfermería brasileña sobre la sexualidad de mujeres con cáncer de mama, con la finalidad de obtener subsidios para ofrecer una asistencia de calidad. Fue utilizada una busca simultánea por palabras, en todas las bases de datos indexadas en la BVS. Se incluyeron 10 artículos publicados a partir del año 2000, en cuya autoría constaban enfermeros. Los resultados mostraron que la sexualidad de las mujeres muchas veces está restricta a la práctica sexual y apenas unos relatos muestran la sexualidad como algo más integral. Las mujeres afectadas por cáncer de mama presentan dificultad en el ejercicio de la sexualidad y el apoyo del compañero ayuda a hacer ese enfrentamiento, siendo percibido como de extrema significancia en todas las etapas de la enfermedad. El análisis de los resultados evidencia una asistencia de Enfermería que no contempla este aspecto del cuidado, evidenciándose las necesidad de una reestructuración. Esa asistencia debe ser extendida a los compañeros y debe ultrapasar la dimensión biológica.

  6. Estadiamento e grau de resiliência do sobrevivente ao câncer de mama Staging and resilience degree in breast cancer survivors

    Directory of Open Access Journals (Sweden)

    Niviane Genz

    2016-10-01

    Full Text Available Objetivo: Investigar o grau de resiliência e de estadiamento frente aos fatores sociodemográficos dos sobreviventes ao câncer de mama em acompanhamento em um serviço de oncologia. Métodos: Estudo quantitativo, amostra de 112 sobreviventes ao câncer de mama. Foram selecionadas variáveis sociodemográficas, estadiamento clínico, tempo de sobrevida e escala de resiliência. Análise no epi-info 6.04 e teste exato de fischer. Aprovação do Comitê de Ética da Faculdade de Enfermagem da UFPel  nº 31/2009. Resultados: média de idade de 46,2 anos, 60,71% estadiamento II, 81,25% eram brancas, 40,18% com escolaridade entre 5-8 anos, 52,68% casados, 73,32% viveu em zona urbana, 41,96% apresentou alta resiliência e 48,21% mantinha-se em acompanhamento entre 1-3 anos. Conclusão: O estadiamento não está associado ao grau de resiliência, mas sim à idade e tempo de sobrevida confirmando os achados em outros estudos.

  7. RTOG criteria to evaluate acute skin reaction and its risk factors in patients with breast cancer submitted to radiotherapy Evaluación de las reacciones agudas de la piel y sus factores de riesgo en pacientes con cáncer de mama sometidos a radioterapia Avaliação das reações agudas da pele e seus fatores de risco em pacientes com câncer de mama submetidas à radioterapia

    Directory of Open Access Journals (Sweden)

    Ana Maria Teixeira Pires

    2008-10-01

    Full Text Available PURPOSE: Evaluate and classify skin reactions through the Radiation Therapy Oncology Group (RTOG criteria and characterize factors that can intervene in these reactions. METHOD: Prospective study, with 86 women submitted to adjuvant breast radiotherapy with a total dose of 5040cGy, in a 6 MeV Linear Accelerator. Personal data were collected and breast size was measured (distance between field separation and breast height. The treated skin area was evaluated weekly. RESULTS: Breast height and treatment technique were significant factors in the univariate analysis for the incidence of degree 3 skin reactions. However, only breast height was a significant factor in the multivariate analysis for the severity of skin reactions. The chances of occurring degree 3 reactions increase 2.61 times for each increase in height unit (cm. These findings allow nurses to plan more adequate and individualized procedures for each patient and contribute to the optimization of treatment.El objetivo fue evaluar y clasificar las reacciones de la piel según los criterios del Radiation Therapy Oncology Group (RTOG y caracterizar factores que puedan interferir en esas reacciones. METODOLOGÍA: Estudio prospectivo, con 86 mujeres sometidas a la radioterapia en la mama, dosis total de 5040cGy, con Acelerador Lineal de 6 MeV. Fueron recolectados datos personales y medido el tamaño de la mama (distancia entre la separación de los campos y la altura de la mama. La evaluación de la piel del área de tratamiento fue realizada semanalmente. RESULTADOS: La altura de la mama y la técnica de tratamiento fueron significativos en el análisis univariado, para incidencia de reacción de piel grado 3. Sin embargo, solamente la altura de la mama fue el factor significativo en el análisis multivariado para la gravedad de la reacción de la piel. La probabilidad de ocurrir una reacción grado 3 aumenta 2,61 veces por cada aumento de 1 unidad de altura en cm. Lo encontrado le permite

  8. Photoelectron spectroscopy

    International Nuclear Information System (INIS)

    Bosch, A.

    1982-01-01

    In this work examples of the various aspects of photoelectron spectroscopy are given. The investigation was started with the development of an angle-resolved spectrometer so that the first chapters deal with angle-resolved ultra-violet photoelectron spectroscopy. To indicate the possibilities and pitfalls of the technique, in chapter II the theory is briefly reviewed. In chapter III the instrument is described. The system is based on the cylindrical mirror deflection analyzer, which is modified and improved for angle-resolved photoelectron spectroscopy. In combination with a position sensitive detector, a spectrometer is developed with which simultaneously several angle-resolved spectra can be recorded. In chapter IV, the results are reported of angle-integrated UPS experiments on dilute alloys. Using the improved energy resolution of the instrument the author was able to study the impurity states more accurately and shows that the photoemission technique has become an important tool in the study of impurities and the interactions involved. XPS and Auger results obtained from dilute alloys are presented in chapter V. It is shown that these systems are especially suited for the study of correlation effects and can provide interesting problems related to the satellite structure and the interaction of the impurity with the host. In chapter VI, the valence bands of ternary alloys are studied with UPS and compared to recent band structure calculation. The core level shifts are analyzed in a simple, thermodynamic scheme. (Auth.)

  9. Fusion spectroscopy

    International Nuclear Information System (INIS)

    Peacock, N.J.

    1995-09-01

    This article traces developments in the spectroscopy of high temperature laboratory plasma used in controlled fusion research from the early 1960's until the present. These three and a half decades have witnessed many orders of magnitude increase in accessible plasma parameters such as density and temperature as well as particle and energy confinement timescales. Driven by the need to interpret the radiation in terms of the local plasma parameters, the thrust of fusion spectroscopy has been to develop our understanding of (i) the atomic structure of highly ionised atoms, usually of impurities in the hydrogen isotope fuel; (ii) the atomic collision rates and their incorporation into ionization structure and emissivity models that take into account plasma phenomena like plasma-wall interactions, particle transport and radiation patterns; (iii) the diagnostic applications of spectroscopy aided by increasingly sophisticated characterisation of the electron fluid. These topics are discussed in relation to toroidal magnetically confined plasmas, particularly the Tokamak which appears to be the most promising approach to controlled fusion to date. (author)

  10. Prognosis of breast cancer during pregnancy: evidence for nursing care El pronóstico de cáncer de mama en el embarazo: evidencias para la atención de enfermería O prognóstico de câncer de mama na gravidez: evidências para o cuidado de enfermagem

    Directory of Open Access Journals (Sweden)

    Ana Fátima Carvalho Fernandes

    2011-12-01

    Full Text Available This integrative review analyzed evidence available in the literature concerning the prognosis of breast cancer during pregnancy. The following databases were used for selecting studies: PubMed, CINAHL and LILACS. A total of 240 primary studies were identified; 13 papers were included in the integrative review’s sample after reading the titles and abstracts and according to the established inclusion and exclusion criteria. There is evidence indicating that pregnancy does not worsen the evolution of breast cancer and a poor prognosis is related to late stage tumors. Among the gaps identified in the studied theme, the need for further studies addressing nursing care provided to pregnant women with breast cancer is highlighted in order to promote improved care in the context of health care.Esta revisión integradora de la literatura objetivó analizar las evidencias disponibles en la literatura sobre el pronóstico del cáncer de mama durante el embarazo. La selección de los estudios primarios fue realizada en las bases de datos PubMed, CINAHL y LILACS; se identificaron 240 estudios primarios. Después de la lectura de los títulos y resúmenes y establecimiento de los criterios de inclusión y exclusión, 13 artículos fueron incluidos en la muestra de la revisión integradora. En la síntesis del conocimiento producido hay evidencias que indican que el embarazo no empeora la evolución del cáncer de mama y el pronóstico malo está relacionado con la estadificación clínica tardía del tumor. Entre las lagunas en el tópico investigado hay que resaltar la necesidad de realizar estudios sobre la atención de enfermería prestada a mujeres embarazadas con cáncer de mama para mejoría del cuidado en el contexto de la atención a la salud.O presente estudo teve como objetivo analisar as evidências disponíveis na literatura sobre o prognóstico de câncer de mama na gravidez. O método de revisão adotado foi a revisão integrativa. Para a

  11. Social support and cervical and breast cancer screening practices among nurses Apoyo social y rastreo de cáncer uterino y de mama entre las trabajadoras de enfermería Apoio social e rastreamento de câncer uterino e de mama entre trabalhadoras de enfermagem

    Directory of Open Access Journals (Sweden)

    Isis Teixeira e Silva

    2009-08-01

    Full Text Available This cross-sectional epidemiological study was carried out at three public hospitals in Rio de Janeiro, RJ, Brazil. It aimed at analyzing the association between social support and cervical and breast cancer early detection practices among nurses. Data were collected through a multidimensional questionnaire focusing on socio-demographic and occupational variables, the performance of the breast self-exam, the Papanicolaou smear test, and social support (Medical Outcomes Study scale. Statistical associations were evaluated through the Chi-square test (p d" 0.05. Logistic regression tests were used for multivariate analysis. Higher levels of social support consistently increased the chances of individuals reporting adequate practices concerning breast self-examination and having Pap smear tests performed, regardless of socio-demographic or occupational variables. These results corroborate the hypotheses that social support has a positive effect on the regular practice of self-care.Estudio epidemiológico, seccional, realizado en tres hospitales públicos de Río de Janeiro, en Brasil, con el objetivo de analizar la asociación entre el apoyo social y las prácticas de detección precoz de cáncer uterino y de mama entre trabajadoras de enfermería. Los datos fueron recolectados a través de un cuestionario multidimensional referente a variables socio demográficas y ocupacionales, a la realización del Papanicolaou, al auto examen de las mamas y al apoyo social (escala Medical Outcomes Studiy. Las asociaciones estadísticas fueron evaluadas a través de la prueba chi-cuadrado con niveles de significancia de 5%. Se utilizó la regresión logística para el análisis multivariado. De manera consistente, mayores niveles de apoyo social aumentaron las chances de la realización de prácticas adecuadas, del examen Papanicolaou y del auto examen de las mamas, después de ajuste por variables socios demográficos y ocupacionales. Esos resultados

  12. Oficina de autoexame de mamas: uma estratégia para o autoconhecimento de adolescentes Taller de autoexamen de mamas: una estrategia para el autoconocimiento de adolescentes Workshop on breast self-examination: a strategy for self-knowledge of adolescents

    Directory of Open Access Journals (Sweden)

    Maria da Conceição Grego

    2011-01-01

    Full Text Available OBJETIVOS: Verificar a repercussão do conhecimento transmitido por meio da Oficina de autoexame de mamas e identificar a multiplicação de informações pelas participantes adolescentes. MÉTODOS: Trata-se de um estudo quantitativo, tipo Survey, realizado com 474 adolescentes de três escolas de Ensino Médio e Fundamental do município de Embu das Artes, em 2006 e 2007. RESULTADOS: Os dados das questões estruturadas e semiestruturadas, respondidas pelas participantes, mostraram as frequências das respostas acima de 50% da estimativa sobre a "repercussão do conteúdo da oficina" e abaixo dos 50% sobre a "ação multiplicadora". CONCLUSÃO: A Oficina auxilia a elaboração do conceito de si pelas adolescentes, de seu corpo, informa sobre o câncer de mama e os benefícios da adoção de práticas e atitudes saudáveis em seu cotidiano, empregando a técnica do autoexame de mamas como instrumento pedagógico.OBJETIVOS: Verificar la repercusión del conocimiento transmitido por medio del Taller de autoexamen de mamas e identificar la multiplicación de las informaciones por las participantes adolescentes. MÉTODOS: Se trata de un estudio cuantitativo, tipo Survey, realizado con 474 adolescentes de tres escuelas de Enseñanza Media y Fundamental del municipio de Embu de las Artes, en el 2006 y 2007. RESULTADOS: Los datos de las preguntas estructuradas y semiestructuradas, respondidas por las participantes, mostraron las frecuencias de las respuestas encima del 50% de la estimativa sobre la "repercusión del contenido del Taller" y abajo del 50% sobre la "acción multiplicadora". CONCLUSIÓN: El taller auxilia en la elaboración del concepto de sí por parte de las adolescentes, de su cuerpo, informa sobre el cáncer de mama y los beneficios de la adopción de prácticas y actitudes saludables en su cotidiano, empleando la técnica del autoexamen de mamas como instrumento pedagógico.OBJECTIVES: To verify the repercussions of knowledge

  13. Câncer de Mama Associado à Gravidez: Um Estudo Caso/Controle Breast Cancer Associated With Pregnancy: A Case Control Study

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    Juvenal Mottola Junior

    2002-10-01

    Full Text Available Objetivo:relatar série de 15 casos de câncer de mama associado à gravidez e comparar com um grupo controle de pacientes jovens com carcinoma ductal invasivo da mama, avaliando o estadiamento clínico, o comprometimento linfonodal axilar, o grau nuclear, o grau histológico e os receptores hormonais de estrógeno e progesterona. Métodos: foi realizado estudo retrospectivo de 15 casos de pacientes com câncer de mama associado à gravidez, atendidas no setor de Mastologia do Centro de Referência da Saúde da Mulher, Hospital Pérola Byington, em São Paulo, durante o período de setembro de 1996 a abril de 2001, designando como base principal do estudo a avaliação do estadiamento clínico, a época do diagnóstico e o comprometimento axilar. Também, foram analisados a faixa etária, paridade, tipo histológico, tratamento realizado, características histológicas quanto ao grau nuclear e grau histológico, e a presença de receptores hormonais nos tumores diagnosticados. Comparou-se este grupo com um grupo controle de pacientes jovens com câncer de mama. Resultados: verificou-se que 7 pacientes com câncer de mama associado à gravidez (46,7% encontravam-se com doença localmente avançada (estádio clínico IIIA e IIIB e 3 pacientes (20% apresentavam doença disseminada no momento do diagnóstico. As pacientes apresentaram em média 2,4 linfonodos axilares comprometidos, sendo que apenas uma paciente (6,6% não apresentava comprometimento linfonodal axilar. Com relação à época do diagnóstico, 40% dos cânceres foram diagnosticados durante a lactação, 46,7% durante o terceiro trimestre e 13,3% no segundo trimestre. Comparou-se este grupo de pacientes grávidas com um grupo controle de pacientes, com a mesma média etária, não grávidas, portadoras de carcinoma invasivo de mama analisando o estadiamento clínico, o comprometimento linfonodal axilar, grau nuclear, grau histológico e os receptores hormonais de estrógeno e

  14. Neurinoma del plexo braquial simulando metastasis de adenocarcinoma de mama Schwannoma of the brachial plexus resembling a breast adenocarcinoma metastasis

    Directory of Open Access Journals (Sweden)

    Gregorio Rodríguez Boto

    2011-10-01

    Full Text Available Los neurinomas del plexo braquial son tumores infrecuentes que pueden confundirse con otras lesiones de índole tumoral. Se presenta el caso de una mujer de 40 años, tratada previamente de un adenocarcinoma de mama derecha en el pasado, que en el estudio de extensión realizado 5 años después se detectó una lesión localizada en el plexo braquial derecho. La paciente se encontraba asintomática. El diagnóstico radiológico de presunción fue metástasis de adenocarcinoma mamario. Se realizó un abordaje axilar derecho descubriendo una lesión bien delimitada en el plexo braquial. Con ayuda de la monitorización neurofisiológica intraoperatoria, se observó que la lesión dependía de la rama cubital y se pudo realizar una resección completa preservando la función de dicho nervio. El estudio anatomopatológico confirmó que se trataba de un neurinoma, descartando así la existencia de metástasis. La evolución postoperatoria fue satisfactoria. Seis años después de la intervención no existe recidiva tumoral. En nuestro conocimiento este es el primer caso publicado en la literatura de un neurinoma del plexo braquial dependiente de la rama cubital. La monitorización neurofisiológica intraoperatoria resulta fundamental para abordar este tipo de lesiones con baja morbilidad.Schwa nomas originating from the brachial plexus, although rare, may be mistaken for another type of tumour. A 40 year-old woman, who had been treated years earlier for a breast adenocarcinoma, showed in the 5-year follow-up magnetic resonance examination a localized lesion in the right brachial plexus. The presumptive radiological diagnosis was a metastasis from the primary adenocarcinoma. Following surgical access via the right axilla, a well-circumscribed mass in the brachial plexus was detected. Under intraoperative electrophysiological guidance, the lesion was observed to depend on the ulnar nerve and its complete resection was possible without compromising nerve

  15. Câncer de mama e sofrimento psicológico: aspectos relacionados ao feminino El cáncer de mama y el sufrimiento psicológico: aspectos relacionados con el femenino Breast cancer and psychological suffering: female-related aspects

    OpenAIRE

    Lucia Cecilia da Silva

    2008-01-01

    No Brasil e no mundo a incidência do câncer de mama vem aumentando e aparecendo cada vez mais cedo na vida da mulher. O tratamento envolve mastectomia, quimioterapia e radioterapia, que, pelos seus efeitos físicos, podem comprometer em variados graus a auto-estima, a imagem corporal e a identidade feminina daquelas que recebem o diagnóstico da doença. Além disso, em nossa sociedade o câncer adquiriu significados relacionados a culpa, punição, deterioração, dor e morte, agravando o sofrimento ...

  16. Polybrominated Diphenyl Ethers in Human Milk and Serum from the U.S. EPA MAMA Study: Modeled Predictions of Infant Exposure and Considerations for Risk Assessment

    Science.gov (United States)

    Marchitti, Satori A.; Fenton, Suzanne E.; Mendola, Pauline; Kenneke, John F.; Hines, Erin P.

    2016-01-01

    Background: Serum concentrations of polybrominated diphenyl ethers (PBDEs) in U.S. women are believed to be among the world’s highest; however, little information exists on the partitioning of PBDEs between serum and breast milk and how this may affect infant exposure. Objectives: Paired milk and serum samples were measured for PBDE concentrations in 34 women who participated in the U.S. EPA MAMA Study. Computational models for predicting milk PBDE concentrations from serum were evaluated. Methods: Samples were analyzed using gas chromatography isotope-dilution high-resolution mass spectrometry. Observed milk PBDE concentrations were compared with model predictions, and models were applied to NHANES serum data to predict milk PBDE concentrations and infant intakes for the U.S. population. Results: Serum and milk samples had detectable concentrations of most PBDEs. BDE-47 was found in the highest concentrations (median serum: 18.6; milk: 31.5 ng/g lipid) and BDE-28 had the highest milk:serum partitioning ratio (2.1 ± 0.2). No evidence of depuration was found. Models demonstrated high reliability and, as of 2007–2008, predicted U.S. milk concentrations of BDE-47, BDE-99, and BDE-100 appear to be declining but BDE-153 may be rising. Predicted infant intakes (ng/kg/day) were below threshold reference doses (RfDs) for BDE-99 and BDE-153 but above the suggested RfD for BDE-47. Conclusions: Concentrations and partitioning ratios of PBDEs in milk and serum from women in the U.S. EPA MAMA Study are presented for the first time; modeled predictions of milk PBDE concentrations using serum concentrations appear to be a valid method for estimating PBDE exposure in U.S. infants. Citation: Marchitti SA, Fenton SE, Mendola P, Kenneke JF, Hines EP. 2017. Polybrominated diphenyl ethers in human milk and serum from the U.S. EPA MAMA Study: modeled predictions of infant exposure and considerations for risk assessment. Environ Health Perspect 125:706–713; http://dx.doi.org/10

  17. El proceso de adaptación en las mujeres con cáncer de mama The adaptation process of breast cancer women

    Directory of Open Access Journals (Sweden)

    Yenly Catherine Londoño Calle

    2009-03-01

    Full Text Available Objetivo: descubrir el proceso de adaptación de las mujeres para enfrentarse al cáncer de mama, a sus nuevas condiciones de vida y estado de salud dentro de su contexto sociocultural. Metodología: estudio cualitativo apoyado en la Teoría Fundamentada, mediante la realización de entrevistas en profundidad a veinte mujeres que recibieron tratamiento para cáncer de mama, residentes en la ciudad de Medellín, Colombia durante el período de 2005 a 2007. Resultados: el alcance del análisis llegó hasta un ordenamiento conceptual, evidenciando un proceso de adaptación en cuatro etapas: 1. Descubriendo la enfermedad, 2. Aceptando la enfermedad, 3. Venciendo la enfermedad y 4. Adaptándome a un nuevo cuerpo y a una nueva vida. Conclusiones: la adaptación de las mujeres con cáncer de mama es un proceso complejo por cuanto deben enfrentar los múltiples desequilibrios que afectan su dimensión emocional, física, mental y social.This article looks at the adaptation processes that have to undertake women when facing breast cancer. Objective: discover the process of adaptation to their new life conditions and state of health within a sociocultural context. Methodology: qualitative study supported in the Founded Theory by means of in depth interviews to a sample of twenty resident women who received treatment for breast cancer in the city of Medellín, Colombia from 2005 to 2007. Results: the reach of the analysis allowed establishing a conceptual order, showing a process of adaptation in four stages, denominated thus: 1. Discovering the disease, 2. Accepting the disease, 3. Overcoming disease, and 4. Adapting to a new body and a new life. Conclusions: the adaptation of the breast cancer women with breast cancer is a complex process because they must face continuously the multiple imbalances that affect their emotional, physical, mental and social dimensions

  18. Laser spectroscopy

    CERN Document Server

    Demtröder, Wolfgang

    2008-01-01

    Keeping abreast of the latest techniques and applications, this new edition of the standard reference and graduate text on laser spectroscopy has been completely revised and expanded. While the general concept is unchanged, the new edition features a broad array of new material, e.g., frequency doubling in external cavities, reliable cw-parametric oscillators, tunable narrow-band UV sources, more sensitive detection techniques, tunable femtosecond and sub-femtosecond lasers (X-ray region and the attosecond range), control of atomic and molecular excitations, frequency combs able to synchronize independent femtosecond lasers, coherent matter waves, and still more applications in chemical analysis, medical diagnostics, and engineering.

  19. NMR spectroscopy

    International Nuclear Information System (INIS)

    Gruenert, J.

    1989-01-01

    The book reviews the applications of NMR-spectroscopy in medicine and biology. The first chapter of about 40 pages summarizes the history of development and explains the chemical and physical fundamentals of this new and non-invasive method in an easily comprehensible manner. The other chapters summarize diagnostic results obtained with this method in organs and tissues, so that the reader will find a systematic overview of the available findings obtained in the various organ systems. It must be noted, however, that ongoing research work and new insight quite naturally will necessitate corrections to be done, as is the case here with some biochemical interpretations which would need adjustment to latest research results. NMR-spectroscopy is able to measure very fine energy differences on the molecular level, and thus offers insight into metabolic processes, with the advantage that there is no need of applying ionizing radiation in order to qualitatively or quantitatively analyse the metabolic processes in the various organ systems. (orig./DG) With 40 figs., 4 tabs [de

  20. Hadron spectroscopy

    International Nuclear Information System (INIS)

    Igi, K.

    1979-01-01

    This paper is related to mini-rapporteur talk on baryonium spectroscopy. First of all, the models of baryonium, namely the diquark model, the string picture, the linear baryonium and the bag model, are described. All of these models so far discussed are highly suggestive. In this paper, discussions are confined to the spectroscopy of the string and the bag models. Because of the color degree of freedom, the bag model has mock diquonium and mock mesonium besides true baryonium. It might be possible that the string model takes into account only a part of them. The constraints among baryonium, baryon and boson trajectories using duality and unitarity were proposed as a guide for classifying various spectra. Inequalities were derived as the modest and reliable constraints on baryonium intercepts from baryon and boson intercepts by imposing unitarity and Regge behaviors on scattering amplitudes. As a consequence of residue factorization and duality, the baryonium slopes were derived. The spin of S (1936) was also obtained. The baryonium containing s or c quarks can also be studied. Topics such as the EXD patterns of baryons, linear baryons, linear Regge trajectories for all Q-anti Q families, and the Al and two Q mesons, are presented in this paper. Comments on di-baryon are described. (Kato, T.)

  1. Hadron spectroscopy

    International Nuclear Information System (INIS)

    Oka, Makoto

    2012-01-01

    Spectra of hadrons show various and complex structures due to the strong coupling constants of the quantum chromodynamics (QCD) constituting its fundamental theory. For their understandings, two parameters, i.e., (1) the quark mass and (2) their excitation energies are playing important roles. In low energies, for example, rather simple structures similar to the positronium appear in the heavy quarks such as charms and bottoms. It has been, however, strongly suggested by the recent experiments that the molecular resonant state shows up when the threshold to decay to mesons is exceeded. On the other hand, chiral symmetry and its breaking play important roles in the dynamics of light quarks. Strange quarks are in between and show special behaviors. In the present lecture, the fundamental concept of the hadron spectroscopy based on the QCD is expounded to illustrate the present understandings and problems of the hadron spectroscopy. Sections are composed of 1. Introduction, 2. Fundamental Concepts (hadrons, quarks and QCD), 3. Quark models and exotic hadrons, 4. Lattice QCD and QCD sum rules. For sections 1 to 3, only outline of the concepts is described because of the limited space. Exotic hadrons, many quark pictures of light hadrons and number of quarks in hadrons are described briefly. (S. Funahashi)

  2. Rastreamento do câncer de mama: aspectos relacionados ao médico Breast cancer screening: physicians related issues.

    Directory of Open Access Journals (Sweden)

    Eduardo Rodrigues Godinho

    2004-04-01

    Full Text Available OBJETIVO: Reconhecer as características dos médicos do Estado de Goiás, suas condutas, crenças, opiniões e conhecimentos sobre câncer de mama. MATERIAIS E MÉTODOS: Foram enviados 592 questionários aos ginecologistas, mastologistas e geriatras de Goiás. Os principais aspectos pesquisados foram: 1 - características sócio-demográficas (sexo, idade, ano de formatura, atuação em serviços públicos ou particulares; 2 - capacidade de reconhecimento dos fatores de risco para câncer de mama; 3 - atividades educativas desenvolvidas pelos médicos; 4 - percepção de elementos limitadores ao rastreamento; 5 - perguntas genéricas. RESULTADOS: Os questionários respondidos totalizaram 105 (21,2%; 70,5% dos médicos eram do sexo masculino; idade média de 43,9 anos (26 a 70 anos; 73,5% tinham menos de 20 anos de formado; 88,6% ginecologistas, 4,8% ginecologistas/mastologistas, 3,8% mastologistas, 2,8% geriatras; 62,5% atuavam na rede pública e particular simultaneamente. Apenas 13,3% identificaram os cinco fatores de risco apresentados. Cerca de 95% responderam ter participado de cursos de atualização nos dois anos que antecederam a pesquisa. Outros resultados serão apresentados. CONCLUSÕES: As recomendações sobre rastreamento do câncer de mama pareceram pouco claras aos médicos. As respostas sobre atividades educativas mostraram-se algumas vezes conflitantes. As crenças e opiniões sobre rastreamento foram bastante positivas. Escassez de equipamentos e custo do exame foram identificados como obstáculos ao rastreamento do câncer de mama.OBJECTIVE: To identify the characteristics of physicians in the State of Goiás, Brazil, regarding patient management, beliefs, opinions and knowledge about breast cancer. MATERIALS END METHODS: A total of 592 questionnaires were mailed to gynecologists, mastologists and geriatricians. The survey covered the following main aspects: 1 - socio-demographic characteristics (sex, age, year of graduation

  3. Significado biológico de la expresión del gen "h-MAM" en cáncer de mama humano

    OpenAIRE

    Núñez Villar, María José

    2002-01-01

    El gen de la mamoglobina codifica para una proteína de 10 Kda, que en tejidos humanos adultos tan solo ha sido detectada en la mama. Nuestro objetivo ha sido la detección del gen h-MAN en muestras tumorales y la correlación de dicha expresión con parámetros biológicos de primera generación (variedad histológica, grado histológico y nuclear, e invasción ganglionar), segunda generación (receptores de estrógenos y progesterona) y tercera generación (p53, Ki67 y c-erbB-2), así como con la ploidía...

  4. Cáncer de mama bilateral sincrónico. Revisión de la literatura y presentación de un caso

    Directory of Open Access Journals (Sweden)

    Lidia Torres Ajá

    2012-05-01

    Full Text Available Se conoce como cáncer bilateral sincrónico a los tumores primarios en ambas mamas, que son diagnosticados simultáneamente. Su aparición es poco frecuente, y se presenta aproximadamente en el 1- 2,5 % de todos los pacientes. Se informa el caso de una paciente de 57 años, que acudió a consulta por presentar nódulos mamarios bilaterales, diagnosticados, mediante biopsia por parafina, como cánceres mamarios histológicamente diferentes. Es el primer caso de cáncer mamario bilateral sincrónico diagnosticado en la provincia de Cienfuegos, por lo cual consideramos de interés su publicación y divulgación.

  5. In vivo click reaction between Tc-99m-labeled azadibenzocyclooctyne-MAMA and 2-nitroimidazole-azide for tumor hypoxia targeting.

    Science.gov (United States)

    Sun, Wenjing; Chu, Taiwei

    2015-10-15

    The bioactivity of nitroimidazole in Tc-99m-labeled 2-nitroimidazole, a traditional solid tumor hypoxia-imaging agent for single photon emission computed tomography (SPECT), is reduced by the presence of large ligand and metallic radionuclide, exhibiting lower tumor-to-nontumor ratios. In an effort to solve this general problem, a pretargeting strategy based on click chemistry (strain-promoted cyclooctyne-azide cycloaddition) was applied. The functional click synthons were synthesized as pretargeting components: an azide group linked to 2-nitroimidazole (2NIM-Az) serves for tumor hypoxia-targeting and azadibenzocyclooctyne conjugated with monoamine monoamide dithiol ligand (AM) functions as radiolabeling and binding group to azides in vivo. 2NIM-triazole-MAMA was obtained from in vitro click reaction with a reaction rate constant of 0.98M(-1)s(-1). AM and 2NIM-triazole-MAMA were radiolabeled with Tc-99m. The hypoxia-pretargeting biodistribution was studied in Kunming mice bearing S180 tumor; (99m)Tc-AM and (99m)Tc-triazole-2NIM were used as blank control and conventional control. Compared to the control groups, the pretargeting experiment exhibits the best radio-uptake and retention in tumor, with higher tumor-to-muscle and tumor-to-blood ratios (up to 8.55 and 1.44 at 8h post-(99m)Tc-complex-injection, respectively). To some extent, the pretargeting strategy protects the bioactivity of nitroimidazole and therefore provides an innovative approach for the development of tumor hypoxia-SPECT imaging agents. Copyright © 2015 Elsevier Ltd. All rights reserved.

  6. Analgesia preventiva y multimodal con ketamina y dipirona en mastectomía radical por cáncer de mama

    Directory of Open Access Journals (Sweden)

    Miladys Justo Hernández

    2015-11-01

    Full Text Available El dolor agudo es frecuente en los pacientes que requieren intervención quirúrgica; su tratamiento satisfactorio es uno de los retos más importantes, presentando ventajas la terapéutica multimodal y preventiva. Se realizó un estudio longitudinal, prospectivo en 22 pacientes, a los que se les practicó mastectomía radical por cáncer de mama, con el objetivo de describir el uso de la analgesia multimodal y preventiva con ketalar y dipirona en el manejo del dolor posoperatorio de estos pacientes. La técnica anestésica utilizada fue total intravenosa, con propofol y fentanyl, dosis convencional. En el postoperatorio se vigiló la aparición de efectos colaterales. Los datos se colocaron en tablas de contingencia, procesados mediante el sistema de cálculos estadísticos que presenta Microsoft Excel. El análisis se realizó fundamentalmente a través de medidas de resúmenes, porcentaje y media aritmética. Se concluyó que la analgesia multimodal preventiva con ketamina y dipirona fue efectiva y segura en todos los casos, a los que se realizó radical de mama. Predominó el grupo de edad entre 46 y 65 años y ASA II. Las variables hemodinámicas y respiratorias se mantuvieron estables en todos los pacientes. No necesitaron analgesia de rescate. La somnolencia se manifestó en 13,6% de los casos.

  7. "Ay mama Inés", de Jorge Guzmán: Entre la crónica y el testimonio

    Directory of Open Access Journals (Sweden)

    Renato Martínez

    2016-03-01

    Full Text Available La excelente novela de Guzmán se autodefine como crónica testimonial, sin embargo los géneros crónica y testimonio, pese a su similar contingencia histórica, tienen un signo retórico opuesto. La crónica con notorias excepciones -es eulógica y tiene propósitos fundacionales. El testimonio es, por el contrario, denunciatorio y subversivo. Ay mama Inés, encuentra existencia en un campo de fuerzas originado por la tensión entre un anverso cronicado y su reverso testimonial, y donde el primero termina desplazando al segundo. La consecuencia más importante del predominio de la crónica es el relato de Pedro de Valdivia como un héroe épico y trágico de grandes proporciones, mientras que su lado histórico, ideológico y social retrocede a un segundo lugar.   Guzman's excellent novel defines itself as a "testimonial chronicle", although genders such as "testimony" and "chronicle" are opposite rhetorical sings, despite similar historical contingencies. The chronicle, save excepcional cases, is eulogical and fulfills foundational purposes. Testimonial, on the contrary is denunciatory and subversive. "Ay Mama Ines" finds its literary existence from a tug-of-war between a chronicled anverse and a testimonial reverse, where the former ends by displacing the letter. The Most important consequence of the predomiance of the chronicle element is in the history of Pedro de Valdivia as an epic and tragic hero of great proportions whereas his historical, ideological and social sides are relegated to a second place.

  8. El receptor de estrógenos alfa como mediador del efecto proliferativo de progestágenos en cáncer de mama

    Directory of Open Access Journals (Sweden)

    Sebastián Giulianelli

    2012-08-01

    Full Text Available En carcinomas mamarios murinos (C4-HD y en células de cáncer de mama humano (T47D observamos que el progestágeno sintético, acetato de medroxiprogesterona (MPA, induce la activación del receptor de estrógenos alfa (REa y su asociación nuclear con el receptor de progesterona (RP. En este trabajo postulamos que dicha interacción a nivel genómico sería fundamental para desarrollar respuestas proliferativas mediadas por progestágenos. Demostramos que el antiestrógeno fulvestrant (FUL, ICI182.780 indujo la regresión completa de tumores C4-HD creciendo con MPA. El progestágeno indujo la expresión temprana de CCND1 y MYC en células T47D y este efecto fue revertido al bloquear el REa. En células tratadas con MPA utilizamos ensayos de inmunoprecipitación de la cromatina (ChIP y corroboramos la colocalización nuclear de RP/REa en los mismos sitios de los promotores de CCND1 y MYC. El ICI no afectó la unión de RP a ambas secuencias regulatorias, pero sí inhibió la unión del REa. Confirmamos la interacción nuclear entre REa y RP en muestras de cáncer de mama humano. Los resultados demuestran que la presencia del REa, interactuando con el RP, en promotores de CCND1 y MYC es fundamental para la transcripción génica y la proliferación celular inducida por el progestágeno.

  9. Moessbauer spectroscopy

    International Nuclear Information System (INIS)

    Zemcik, T.

    1984-01-01

    The emission and absorption of photons taking place without changes in the frequency spectrum of the crystal lattice are known as the Moessbauer effect. It takes place in the low energy levels of heavy nuclei in solid lattices at low temperatures. On the basis of the hyperfine structure of Moessbauer spectra the notions are explained of isomer shift, quadrupole splitting and magnetic splitting. The principle and function are explained of Moessbauer spectrometers and the methods of graphical processing of spectra, also the use of the least square fit. Moessbauer spectroscopy is nondestructive, highly sensitive and selective and makes structural resolution possible. It is used for quantitative and qualitative analysis of compounds. Examples are given of the use of this method for mineralogical and crystallo-chemical analysis of lunar minerals and rocks, for analysis of corrosion products of iron and for phase analysis of alloys. (M.D.)

  10. Condutas na prevenção secundária do câncer de mama e fatores associados Breast cancer's secondary prevention and associated factors

    Directory of Open Access Journals (Sweden)

    Marcelo Leal Sclowitz

    2005-06-01

    Full Text Available OBJETIVO: Avaliar a prevalência de condutas na prevenção secundária do câncer de mama e fatores associados. MÉTODOS: Foi realizado estudo transversal de base populacional na cidade de Pelotas, RS, em 2002, com amostra de 879 mulheres de 40 a 69 anos. Foram coletadas informações sobre variáveis demográficas, socioeconômicas, comportamentais, biológicas e referentes ao manejo médico. A análise estatística das variáveis foi realizada utilizando o método de regressão de Poisson. RESULTADOS: A prevalência do "hábito de realizar o auto-exame" encontrada foi de 83,5% (IC 95%: 80,9-85,9, sendo que, dessas mulheres, 80,4% (IC 95%: 77,3-83,2 o realizavam ao menos uma vez ao mês. A prevalência de "exame clínico de mamas" foi de 83,3% (IC 95%: 80,6-85,7. "Mamografia alguma vez na vida" mostrou prevalência de 70% (IC 95%: 66,8-73,0, sendo que 83,7% (IC 95%: 80,5-86,6 realizaram a última mamografia há dois anos ou menos. Das entrevistadas, 62% (IC 95%: 58,7-65,2 consultaram ginecologista ao menos uma vez no último ano. Os fatores associados a maiores prevalências das condutas na prevenção secundária do câncer de mama foram: pertencer às classes sociais mais altas; ter a maior combinação de fatores de risco para neoplasia mamária; ter história familiar de câncer de mama; fazer uso de terapia de reposição hormonal e ter sido submetida à biópsia por patologia mamária. CONCLUSÕES: As medidas preventivas para o câncer de mama vêm sendo bastante utilizadas quantitativamente; entretanto, os dados apontam para limitações em relação à sua adequação. O nível socioeconômico parece ser o principal determinante do acesso à consulta ginecológica e, conseqüentemente, às demais condutas na prevenção secundária do câncer de mama.OBJECTIVE: To evaluate the prevalence of secondary prevention of breast cancer and associated factors. METHODS: A population-based cross-sectional study was conducted in the city of

  11. Photoelectron spectroscopy

    International Nuclear Information System (INIS)

    Shirley, D.A.

    1976-01-01

    Research activities in photoelectron spectroscopy at Lawrence Radiation Laboratory during 1976 are described. Topics covered include: the orientation of CO on Pt(III) and Ni(III) surfaces from angle-resolved photoemission; photoemission from CO on Pt(III) in the range 40 eV less than or equal to dirac constant ω less than or equal to 150 eV; photoemission studies of electron states at clean surfaces using synchrotron radiation; angle and energy dependent photoemission studies of plasmon loss structure in Al and In; d-orbital directed photoemission from copper; interpretation of angle-resolved x-ray photoemission from valence bands; atomic cross-section effects in soft x-ray photoemission from Ag, Au, and Pt valence bands; x-ray photoelectron spectroscopic studies of the electronic structure of transition metal difluorides; x-ray photoemission investigation of the density of states of B'-NiAl; the electronic structure of SrTiO 3 and some simple related oxides; fluorescence lifetime measurements of np 5 (n+1)S' states in krypton and xenon; Zeeman beats in the resonance fluorescence of the 3P 1 , states in krypton and xenon; lifetime measurements of rare-gas dimers; configuration interaction effects in the atomic photoelectron spectra of Ba, Sm, Eu, and Yb; glow discharge lamps as electron sources for electron impact excitation; electron impact excitation of electron correlation states in Ca, Sr, and Ba; photoelectron spectroscopy of atomic and molecular bismuth; relativistic effects in the uv photoelectron spectra of group VI diatomic molecules; and relative gas-phase acidities and basicities from a proton potential model

  12. Bone mineral density in postmenopausal women with and without breast cancer Densidade mineral óssea em mulheres na pós-menopausa com e sem câncer de mama

    Directory of Open Access Journals (Sweden)

    Délio Marques Conde

    2012-12-01

    Full Text Available OBJECTIVE: The values of bone mineral density (BMD were compared in postmenopausal women with and without breast cancer. METHODS: A cross-sectional study was conducted, including 51 breast cancer survivors (BCS and 71 women without breast cancer, who were non-users of hormone therapy, tamoxifen, or aromatase inhibitors. BMD T-scores and measurements in grams per centimeter squared (g/cm² were obtained at the femoral neck, trochanter, Ward's triangle, and lumbar spine. Osteopenia and osteoporosis were grouped and categorized as abnormal BMD. Unconditional logistic regression analysis was used to estimate the odds ratios (OR of abnormal BMD values as measures of association, with 95% confidence intervals (CIs, adjusting for age, years since menopause, parity, and body mass index (BMI. RESULTS: The mean age of the women with and without breast cancer was 54.7 ± 5.8 years and 58.2 ± 4.8 years (p OBJETIVO: Comparar a densidade mineral óssea (DMO de mulheres na pós-menopausa com e sem câncer de mama. MÉTODOS: Conduziu-se estudo de corte transversal, incluindo 51 mulheres com câncer de mama e 71 mulheres sem câncer de mama, não usuárias de terapia hormonal, tamoxifeno ou de inibidores da aromatase. Avaliou-se a DMO, em T-score e em gramas por centímetro quadrado (g/cm², no colo do fêmur, trocânter, triângulo de Wards e na coluna lombar. Osteopenia e osteoporose foram agrupadas e categorizadas como DMO alterada. Utilizou-se a análise de regressão logística não condicional para estimar o odds ratios (OR de DMO alterada como medida de associação, com intervalo de confiança de 95% (IC 95%, ajustando-se por idade, anos de menopausa, paridade e índice de massa corpórea (IMC. RESULTADOS: A média de idade de mulheres com e sem câncer de mama foi 54,7 ± 5,8 anos e 58,2 ± 4,8 anos (p < 0,01, respectivamente. Após ajustar por idade, paridade e IMC, DMO alterada no colo do fêmur (OR ajustado: 4,8; IC 95%: 1,5-15,4, trocânter (OR

  13. Mortalidade e assistência oncológica no Rio de Janeiro: câncer de mama e colo uterino Mortality and care oncology in Rio de Janeiro: cancer of the breast and cervix of uterus

    Directory of Open Access Journals (Sweden)

    Raíla de Souza Santos

    2011-06-01

    Full Text Available O município do Rio de Janeiro apresenta grandes taxas de mortalidade para o câncer de mama e colo uterino. Analisou-se a trajetória dos óbitos por câncer de mama e colo uterino no município do Rio de Janeiro e relacionaram-se a oferta de serviços de saúde e o fluxo de pacientes entre o local de residência e o hospital. Estudo ecológico de base populacional que analisou óbitos por câncer de mama e colo uterino no município do Rio de Janeiro, no período de 2005-2008, mapeando os fluxos de casos da residência para os serviços de saúde. O Sistema de Informação sobre Mortalidade registrou, no período analisado, 3.384 óbitos por câncer de mama e 771 óbitos por câncer do colo de útero. A localização geográfica dos estabelecimentos de saúde define uma distribuição espacial dos óbitos extremamente desigual, alternando padrões de escassez em algumas áreas (periferia da cidade e excesso em outras (Centro.La ciudad de Rio de Janeiro tiene altas tasas de mortalidad por cáncer de mama y cuello uterino. Se analizó la trayectoria de las muertes por cáncer de mama y cáncer cervico-uterino en Rio de Janeiro y se vinculó la prestación de servicios de salud y el flujo de pacientes entre la residencia y el hospital. Estudio ecológico basado en la población que examinó las muertes de cáncer de mama y el cáncer cervical en la ciudad de Rio de Janeiro, en el período 2005-2008. El Sistema de Información sobre la mortalidad ha registrado en el período analizado 3.384 muertes por cáncer de mama y 771 muertes por cáncer de cáncer de cuello uterino. La ubicación geográfica de los centros de salud definió una distribución espacial de las muertes extremadamente desigual, alternando los padrones de escasez en algunas zonas (fuera de la ciudad y el exceso en los demás (Central.The city of Rio de Janeiro has high rates of mortality for breast cancer and uterine cervix. In this study was analyzed the trajectory of deaths

  14. Relación entre síntomas autonómicos con niveles de ansiedad y depresión en mujeres con cáncer de mama

    OpenAIRE

    Sánchez Huerta, María Suhail; Figueroa López, Carlos Gonzalo; Cacho Díaz, Bernardo; Robles García, Rebeca

    2016-01-01

    Resumen: El cáncer de mama es una amenaza debido al estrés que confrontan las mujeres. Éstos pueden generar ansiedad, depresión e incluso, desregular el funcionamiento autonómico. Objetivo: evaluar la relación entre síntomas autonómicos y, síntomas de ansiedad y depresión en mujeres con cáncer de mama. Método: se evaluaron 59 mujeres a quienes se les aplicó el Perfil de Síntomas Autonómicos (PSA) y la Escala de Ansiedad y Depresión Hospitalaria (HADS). Resultados: el 49% y el 24% de las mujer...

  15. MAMOGRAFIA DE RASTREAMENTO PARA CÂNCER DE MAMA PELO SUS NA REGIÃO METROPOLITANA DO VALE DO PARAÍBA E LITORAL NORTE: TENDÊNCIA E CARACTERISTICAS SOCIAIS DE MULHERES SUBMETIDAS AO EXAME, ENTRE 2010 E 2014

    OpenAIRE

    Patricia Almeida Silva; Paula Vilhena Carnevale Vianna; Paulo Roxo Barja

    2017-01-01

    Análises da vulnerabilidade das mulheres para o câncer de mama revelam que, no Brasil, mulheres negras e menos instruídas têm menor acesso à mamografia de rastreamento, exame que permite a detecção precoce do câncer. Desde 2006, o controle do câncer de mama é política prioritária no SUS. Este estudo analisa a série histórica de exames de mamografia de rastreamento realizados pelo SUS no período de 2010 a 2014, na Região Metropolitana do Vale do Paraíba e Litoral Norte – RMVale, para investiga...

  16. Mortalidade por câncer de mama e câncer de colo do útero em município de porte médio da Região Sudeste do Brasil, 1980-2006

    OpenAIRE

    Rodrigues,Anselmo Duarte; Bustamante-Teixeira,Maria Teresa

    2011-01-01

    Analisar a tendência da mortalidade por câncer de mama e câncer de colo do útero em mulheres residentes no Município de Juiz de Fora, Minas Gerais, Brasil, no período de 1980 a 2006. Os dados sobre os óbitos foram obtidos do Sistema de Informação sobre Mortalidade; as taxas de mortalidade específicas foram calculadas por idade e padronizadas pela população mundial. Para análise de tendência, foram aplicados modelos de regressão polinomial. O câncer de mama foi a principal causa de óbito entre...

  17. Conhecimento das estudantes universitárias da área da saúde sobre câncer de mama em mulheres The knowledge of health sciences undergraduate female students regarding women breast cancer

    Directory of Open Access Journals (Sweden)

    Marli Aparecida Rocha Souza

    2016-04-01

    Full Text Available Objetivo: Caracterizar o conhecimento de estudantes universitárias da área da saúde sobre  câncer de mama em mulheres, considerando que é uma das doença que mais acomete a mulher. Método:Pesquisa qualitativa descritiva, com 11 estudantes universitárias dos cursos de enfermagem e medicina, em uma Universidade pública do Paraná, entre abril e junho de 2012. A análise dos dados foi feita segundo os 6 passos sugeridos por Jonh W. Creswell e o referencial de Edgar Morin sobre o conhecimento e suas dimensões: a dimensão contexto, global, multidimensional e a dimensão complexo. Conclusão:O conhecimento sobre câncer de mama, vai além do conjunto de informações que o envolve,implantação de políticas públicas e programas específicos, mas também refere-se ao envolvimento e sensibilização dos profissionais que irão atuar nessa aréa.Descritores:Enfermagem; Câncer de mama; Saúde da mulher; Estudantes. Conhecimento.

  18. SIMP spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Hochberg, Yonit [Ernest Orlando Lawrence Berkeley National Laboratory, University of California,Berkeley, CA 94720 (United States); Department of Physics, University of California,Berkeley, CA 94720 (United States); Kuflik, Eric [Department of Physics, LEPP, Cornell University,Ithaca NY 14853 (United States); Murayama, Hitoshi [Ernest Orlando Lawrence Berkeley National Laboratory, University of California,Berkeley, CA 94720 (United States); Department of Physics, University of California,Berkeley, CA 94720 (United States); Kavli Institute for the Physics and Mathematics of the Universe (WPI),University of Tokyo Institutes for Advanced Study, University of Tokyo,Kashiwa 277-8583 (Japan); Center for Japanese Studies, University of California,Berkeley, CA 94720 (United States)

    2016-05-16

    We study the interactions between strongly interacting massive particle dark matter and the Standard Model via a massive vector boson that is kinetically mixed with the hypercharge gauge boson. The relic abundance is set by 3→2 self-interactions of the dark matter, while the interactions with the vector mediator enable kinetic equilibrium between the dark and visible sectors. We show that a wide range of parameters is phenomenologically viable and can be probed in various ways. Astrophysical and cosmological constraints are evaded due to the p-wave nature of dark matter annihilation into visible particles, while direct detection methods using electron recoils can be sensitive to parts of the parameter space. In addition, we propose performing spectroscopy of the strongly coupled dark sector at e{sup +}e{sup −} colliders, where the energy of a mono-photon can track the resonance structure of the dark sector. Alternatively, some resonances may decay back into Standard Model leptons or jets, realizing ‘hidden valley’ phenomenology at the LHC and ILC in a concrete fashion.

  19. SIMP spectroscopy

    International Nuclear Information System (INIS)

    Hochberg, Yonit; Kuflik, Eric; Murayama, Hitoshi

    2016-01-01

    We study the interactions between strongly interacting massive particle dark matter and the Standard Model via a massive vector boson that is kinetically mixed with the hypercharge gauge boson. The relic abundance is set by 3→2 self-interactions of the dark matter, while the interactions with the vector mediator enable kinetic equilibrium between the dark and visible sectors. We show that a wide range of parameters is phenomenologically viable and can be probed in various ways. Astrophysical and cosmological constraints are evaded due to the p-wave nature of dark matter annihilation into visible particles, while direct detection methods using electron recoils can be sensitive to parts of the parameter space. In addition, we propose performing spectroscopy of the strongly coupled dark sector at e + e − colliders, where the energy of a mono-photon can track the resonance structure of the dark sector. Alternatively, some resonances may decay back into Standard Model leptons or jets, realizing ‘hidden valley’ phenomenology at the LHC and ILC in a concrete fashion.

  20. Planetary spectroscopy

    International Nuclear Information System (INIS)

    Fink, U.

    1988-01-01

    The main goal of the research is charge coupled device (CCD) spectroscopic and imaging studies of the solar system in support of spacecraft investigations. Studies include the physical behavior of comets, the atmosphere of the gaseous planets, and the solid surfaces of satellites and asteroids. The major observing program consisted of approximately 50 nights of photometry of Comet Halley in order to resolve the controversy over this comet's rotation period. This data is presently being analyzed. Additional observing projects included the spectroscopic occultation of Charon by Pluto, reflection spectroscopy of Mercury, and a spectrum of the satellite Oberon. Mercury data does not corroborate the Fe(++) absorption feature reported by McCord and Clark at 8800 A but instead potentially shows a weaker feature at longer wavelengths. This position is in much closer accord with expectations for Mercury since a band center near 8800 A implies too little Fe(++) on Mercury, especially if band shifts with temperature are considered. The Pluto project proved that the deep methane absorptions visible in their combined specta are due soley to Pluto with Charon showing a flat and featureless spectrum. It appears that if Charon ever contained a substantial methane component, the satellite's low surface gravity could not hold it and the methane evaporated and escaped

  1. Intermolecular spectroscopy

    International Nuclear Information System (INIS)

    Gelbart, W.M.

    1980-01-01

    In this article some of the theoretical background is presented for the following papers on 'Intermolecular Spectroscopy and Dynamical Properties of Dense Systems'. In Section 1 we outline a simple semi-classical description of the interaction between optical radiation and matter. The motion of a many-body polarizability is introduced; limiting forms of this complicated quantity lead to the familiar cases of light scattering spectra. In Section 2 we consider the linear response approximation, and the equation of motion for the many-body density matrix is solved to first order in the matter-radiation interaction. The often quoted fluctuation-dissipation theorem and the time-dependent, equilibrium correlation functions are discussed. Section 3 treats the problem of the local field. In Section 4 we consider the special case of collision-induced light scattering by atomic fluids in the low-density limit. This allows us to focus on determining the interaction polarizability for simple gases. Finally, in Section 5 we distinguish between collision-induced and multiple light scattering, and discuss the double-light-scattering analyses which provide new information about critical and thermodynamically unstable fluids. (KBE)

  2. Mama Benz in Trouble

    DEFF Research Database (Denmark)

    Prag, Ebbe

    2013-01-01

    This article examines the impact of Chinese textile imports on the organization and politics of women’s textile trading networks in Benin. The incursion of cheap Chinese textiles into markets previously dominated by imported European fabrics has shifted the balance of power between networks...... of women traders in Benin’s apex textile market, reconfiguring relations between textile traders, state officials and international companies. Focusing on the political as well as the economic dimensions of trading networks that feed regional smuggling systems across West Africa, this article reveals how...... global linkages transform local economic networks, and how local actors structure networks for global economic partners. Far from bypassing state actors, this process is shown to incorporate state officials from above and from below, splintering established trading networks and weaving new ones from...

  3. Mama Benz in Trouble

    DEFF Research Database (Denmark)

    Prag, Ebbe

    Recent change in global trade has deeply affected West Africa markets. Between 2004-2008 import of Chinese produced wax batik and “fancy” textiles out-competed Dutch wax products. This changed the balance of power between the associations of wholesalers in Cotonou/Benin and reconfigured relations...... by continuity and change. Global structures impact on and transform local markets, however, local actors also structure market conditions for the global economic partners. The ‘structuration’ process leads to segmentation of market associations, international companies and product lines. Moreover, it is crucial...

  4. Ansiedade no período pré-operatório de cirurgias de mama: estudo comparativo entre pacientes com suspeita de câncer e a serem submetidas a procedimentos cirúrgicos estéticos Ansiedad en el período preoperatorio de cirugías de mama: estudio comparativo entre pacientes con sospecha de cáncer a ser sometidas a procedimientos quirúrgicos estéticos Preoperative anxiety in surgeries of the breast: a comparative study between patients with suspected breast cancer and that undergoing cosmetic surgery

    OpenAIRE

    Maria Luiza Melo Alves; Adriana Jucá Pimentel; Álvaro Antônio Guaratini; José Álvaro Marques Marcolino; Judymara Lauzi Gozzani; Ligia Andrade da Silva Telles Mathias

    2007-01-01

    JUSTIFICATIVA E OBJETIVOS: A avaliação da ansiedade não faz parte da rotina da avaliação pré-anestésica (APA), o que faz com que situações especiais em que o estado emocional dos pacientes possa estar alterado, passem despercebidas pelo anestesiologista. Este estudo visou comparar, no momento da APA ambulatorial, fatores de risco, intensidade e prevalência de ansiedade em pacientes com suspeita de câncer de mama e a serem submetidas a procedimentos cirúrgicos estéticos de mama. MÉTODO: Após a...

  5. Estadiamento inicial dos casos de câncer de mama e colo do útero em mulheres brasileiras Initial staging of breast and cervical cancer in Brazilian women

    Directory of Open Access Journals (Sweden)

    Luiz Claudio Santos Thuler

    2005-11-01

    Full Text Available OBJETIVO: analisar a evolução temporal do estadiamento no momento do diagnóstico dos casos de câncer de mama e do colo do útero em mulheres atendidas pelo Sistema Único de Saúde (SUS. MÉTODOS: em uma primeira etapa foram identificados os relatórios disponíveis contendo a descrição do estadiamento clínico inicial dos casos de câncer atendidos nos hospitais brasileiros. Considerando-se sua escassez e pouca representatividade, realizou-se uma segunda etapa na qual foi efetuada busca ativa de informações. Uma planilha foi enviada por via postal a todos (n=173 os Centros de Alta Complexidade em Oncologia (CACON cadastrados pelo Ministério da Saúde para atendimento ao SUS solicitando informações para o período compreendido entre 1995 e 2002. Para a análise estatística foi utilizado o programa "R". Os resultados são apresentados como percentuais e boxplots. RESULTADOS: na primeira etapa (1990-1994 foram identificadas informações de 18 hospitais, referentes a 7.458 pacientes com câncer de mama e 7.216 pacientes com câncer do colo do útero. A mediana de casos diagnosticados em estádio avançado (estádios III e IV foi de 52,6 e 56,8%, respectivamente. Na segunda etapa (1995-2002 foram obtidas informações de 89 hospitais e 7 serviços isolados de quimioterapia ou radioterapia, referentes a 43.442 casos de câncer de mama e 29.263 casos de câncer de colo do útero. A taxa de resposta, baseada na listagem inicial de CACONs, foi de 55%. A mediana do percentual de pacientes em estádio avançado foi de 45,3% para os casos de câncer de mama e de 45,5% para os casos de câncer do colo do útero. CONCLUSÕES: no Brasil, poucos estudos analisaram as tendências temporais do estadiamento dos casos de câncer. Os dados obtidos a partir dos registros hospitalares de Câncer mostraram que, na última década, houve redução no percentual de casos de câncer de mama e do colo do útero em estádio avançado, o que pode indicar que

  6. Auger electron spectroscopy, ionization loss spectroscopy, appearance potential spectroscopy

    International Nuclear Information System (INIS)

    Riwan, R.

    1973-01-01

    The spectroscopy of surfaces using an incident electron beam is studied. The fundamental mechanisms are discussed together with the parameters involved in Auger emission: excitation of the atom, de-excitation by electron emission, and the migration of electrons towards the surface and their ejection. Some examples of applications are given (surface structures, metallurgy, chemical information). Two new techniques for analyzing surfaces are studied: ionization spectroscopy, and appearance potential spectroscopy [fr

  7. Factores pronósticos relacionados con la supervivencia del cáncer de mama Prognostic factors related to breast cancer survival

    Directory of Open Access Journals (Sweden)

    Lourdes Flores-Luna

    2008-04-01

    Full Text Available OBJETIVO: Evaluar los factores pronósticos del cáncer de mama en mujeres mexicanas. MATERIAL Y MÉTODOS: Se incluyó a 432 mujeres con cáncer de mama admitidas de 1990 a 1999 en el Hospital General de México para evaluar la supervivencia mediante las técnicas de Kaplan-Meier y los métodos de riesgos proporcionales de Cox. RESULTADOS: La supervivencia global a cinco años fue de 58.9%. La menor supervivencia corresponde a los estadios clínicos IIIB (47.5%, IIIA (44.2% y IV(15%, la metástasis hematógena fue de 21.4% y el tumor positivo en bordes quirúrgicos de 12.5%. La invasión linfovascular (RR= 1.9; IC95% 1.3-2.8, el estadio clínico IV (RR= 14.8; IC95% 5.5-39.7 y el tumor en bordes quirúrgicos (RR= 2.4; IC95% 1.2-4.8 fueron los principales factores pronósticos. CONCLUSIONES: Estos resultados dan consistencia a los criterios de diagnóstico y tratamiento de las mujeres con cáncer de mama atendidas en México y toman en consideración las condiciones de la tumoración, como extensión de la malformación, etapa clínica y estado de los ganglios linfáticos antes de decidir la conducta terapéutica inicial.OBJECTIVE: To evaluate prognostic factors for breast cancer in Mexican women. MATERIAL AND METHODS: Four hundred and thirty two women with breast cancer, admitted from 1990 to 1999 to the General Hospital of Mexico, were included to evaluate their survival using the Kaplan-Meier technique and Cox proportional hazard method. RESULTS: Overall 5-year survival was 58.9%. The shortest survival rate corresponds to the clinical stage (IIIB, 47.5%; IIIA, 44.2%; and IV, 15%, the haematological metastasis (21.4% and surgical edges with positive tumor (12.5%. Lymph node-positive (RR, 1.9; IC95%, 1.3-2.8, clinical stage IV (RR, 14.8; IC95%, 5.5-39.7 and surgical edges with positive tumor (RR, 2.4; IC95%, 1.2-4.8 were the central prognostic factors. CONCLUSIONS: These results give consistency to diagnostic and therapeutic criteria for women

  8. Cirugía ambulatoria y de corta hospitalización en el cáncer de mama Ambulatory breast cancer surgery with short hospitalization period

    Directory of Open Access Journals (Sweden)

    Alexis Cantero Ronquillo

    2007-06-01

    Full Text Available La cirugía mayor ambulatoria y de corta estadía constituye un método eficaz y seguro si se hace una selección adecuada de los enfermos y se utilizan técnicas quirúrgicas depuradas con la creación consecuente de la infraestructura para tales fines. Tradicionalmente, el cáncer de mama ha requerido ingreso hospitalario por el riesgo de hemorragia posoperatoria, la necesidad del control de los drenajes quirúrgicos, etc. Internacionalmente esto ha cambiado tras la introducción de nuevas técnicas quirúrgicas como la biopsia del ganglio centinela, la estandarización de las técnicas preservadoras de tejido mamario, así como la especialización de grupos de cirugía en afecciones de la mama. La creación de un grupo de mastología en nuestro centro permitió incursionar en esta modalidad y ya podamos contar 31 pacientes operadas entre enero de 2004 y junio de 2006. Fueron utilizadas diferentes técnicas quirúrgicas con cirugía de corta estadía, previo establecimiento de los criterios de selección. Pudimos concluir que el tratamiento ambulatorio del cáncer de mama en casos seleccionados es factible, dado que se garantiza la seguridad de la paciente, la calidad asistencial y la continuidad en la atención, que además facilita la recuperación psicológica de la enferma y su reinserción temprana en la familiaAmbulatory major surgery with short hospitalization period is an efficient and safe method if a proper selection of patients is made and refined surgical techniques are used, all supported on adequate infrastructure to this end. Traditionally, breast cancer has required admission at hospital due to postsurgical hemorrhage risk, need for surgical drainage control, etc. This has changed worlwide after the introduction of new surgical techniques as sentinel node biopsy, standardization of preserving techniques for breast tissue and specialization of surgeon teams in breast illnesses. The creation of a mastology group in our center

  9. Mastopatia Diabética: Causa Incomum de Doença Inflamatória da Mama Diabetic Mastopathy: Uncommon Cause of Inflammatory Disease of the Breast

    Directory of Open Access Journals (Sweden)

    Juvenal Mottola Jr.

    2002-09-01

    Full Text Available Objetivo: estudar a associação entre diabete melito insulino-dependente de longa evolução com mau controle glicêmico e lesões inflamatórias da mama que podem, por vezes, simular carcinoma inflamatório. Métodos: no período de janeiro de 1998 a dezembro de 2001 foram estudadas, retrospectivamente, 18 pacientes em serviço de referência de mastologia que apresentavam lesão inflamatória da mama com ou sem tumoração palpável. As mesmas foram submetidas à dosagem sérica de glicose e hemoglobina glicosilada, bem como exames de imagem e análise histológica da glândula mamária, e tiveram como diagnóstico mastopatia diabética. Resultados: a média etária das pacientes foi de 50,2 anos e todas eram portadoras de diabete melito insulino-dependente, com tempo médio de evolução da doença de 14,9 anos. Todas apresentaram mau controle glicêmico, com glicemia sérica média de 329,6 mg/dL e hemoglobina glicosilada média de 9,7%. A dose média de insulina NPH utilizada ao dia era de 37,2 unidades. As pacientes foram submetidas a tratamento clínico com antibioticoterapia e controle dos níveis glicêmicos com insulina NPH e simples e tiveram resolução do quadro em aproximadamente cinco semanas. Conclusão: os profissionais envolvidos com cuidados à saúde da mulher precisam estar cientes desta patologia inflamatória das mamas e de seu caráter benigno, para evitarem-se condutas desnecessárias, muitas vezes prejudiciais à paciente.Purpose: to study the association between long-standing type 1 diabetes with bad glycemic control and breast inflammatory lesions which can simulate inflammatory carcinoma. Patients and Methods: eighteen patients were studied, retrospectively, in a mastology reference center from January 1998 to December 2001, presenting with breast inflammatory lesion with or without palpable mass. They were submitted to serum glucose and glycosylated hemoglobin determination, as well as image examination and

  10. Consumo alimentar de mulheres sobreviventes de câncer de mama: análise em dois períodos de tempo

    Directory of Open Access Journals (Sweden)

    Helena Alves de Carvalho Sampaio

    2012-10-01

    Full Text Available OBJETIVO: Comparar o consumo alimentar de dois grupos de mulheres portadoras de câncer de mama atendidas em dois períodos distintos: 1999-2004 e 2005-2009. MÉTODOS: Estudo documental, com abordagem descritiva e comparativa. Foram coletados dados de identificação e de ingestão alimentar nas fichas de 154 pacientes portadoras de câncer de mama atendidas em serviços de referência de Fortaleza (CE: 66 no período de 1999-2004 e 88 no de 2005-2009. Foram considerados como integrantes do hábito os alimentos consumidos pelo menos quinzenalmente por, no mínimo, 50% das pessoas. Calculou-se a prevalência de consumo de alimentos, sendo os padrões dos dois períodos comparados pela aplicação dos testes Quiquadrado ou exato de Fisher, e adotouse p<0,05 como nível de significância. RESULTADOS: Os hábitos alimentares dos dois grupos foram semelhantes, exceto quanto ao maior consumo de leite e de cenoura e menor consumo de manga e caju, além de uma tendência ao aumento no consumo de óleo de soja, observada no grupo atendido mais recentemente. O aumento de leite e de cenoura pode configurar proteção contra a recidiva da doença, mas a redução do consumo das frutas citadas pode significar maior risco: aliás, foram baixas as prevalências de consumo de frutas e hortaliças pelos dois grupos de mulheres. CONCLUSÃO: Os achados apontam para uma lacuna na abordagem educativa das pacientes tanto no passado como na atualidade, o que comprova a necessidade de incentivar maior consumo e variedade de hortaliças e frutas e menor consumo de cereais refinados, gorduras, açúcar e refrigerantes.

  11. Equidad en el acceso al tratamiento para el cáncer de mama en Colombia Equity in access to treatment for breast cancer in Colombia

    Directory of Open Access Journals (Sweden)

    Ligia Constanza Velásquez-De Charry

    2009-01-01

    Full Text Available OBJETIVOS: Evaluar la equidad en el acceso al tratamiento para cáncer de mama y comparar las barreras geográficas, económicas y organizacionales y las autorizaciones que enfrentan las mujeres, de acuerdo con su afiliación a la seguridad social en salud. MATERIAL Y MÉTODOS: Seguimiento retrospectivo a través de encuestas a mujeres bajo tratamiento para establecer la equidad y contrastar los obstáculos para acceder al tratamiento con objeto de determinar las diferencias relacionadas con su condición de afiliación a la seguridad social en salud. RESULTADOS: Es más probable que las afiliadas al régimen subsidiado y las mujeres de estratos pobres sin seguro deban desplazarse a otra ciudad para recibir tratamiento (RM= 2.40; IC95%: 1.64-3.43, y RM= 1.80; IC95%: 1.04-3.06, respectivamente. La probabilidad de que las mujeres pobres sin seguro deban pagar por los medicamentos es mayor (RM= 3.7; IC95%: 2.15-6.44. CONCLUSIONES: El acceso real al tratamiento para cáncer de mama en Colombia es inequitativo, dado que las mujeres más vulnerables enfrentan mayores barreras.OBJECTIVES: To evaluate equity in access by comparing geographic, economic, and organizational barriers as well as authorization obstacles that women encounter depending on their affiliation with the social security health system. MATERIAL AND METHODS: A retrospective survey was conducted among women undergoing breast cancer treatment to determine differences and the degree of fairness in access to care according to their affiliation with the social security health system. RESULTS: Women affiliated with the subsidized social security health system as well as women living in rural areas have a greater probability to travel to another city (OR 2.40 IC95%;1.64-3.43 and OR 1.80 IC95%;1.04-3.06, respectively. Poor women without insurance have greater probability of having to pay for medications (OR 3.7 IC95%;2.15-6.44. CONCLUSIONS: Access to breast cancer treatment is inequitable and

  12. El impacto de la exposición a plaguicidas sobre la Incidencia de Cáncer de mama. Evidencia de Costa Rica

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    Santamaría-Ulloa, Carolina

    2009-07-01

    Full Text Available Introducción: El cáncer de mama (CM es el más prevalente y la principal causa de muerte por cáncer en las mujeres alrededor del mundo. El bajo porcentaje de casos relacionado con el historial reproductivo o la genética sugiere que el ambiente puede estar jugando un rol en su etiología. Se ha hipotetizado que la exposición a plaguicidas puede tener un efecto importante. Objetivo: Este estudio ecológico prueba si la incidencia de CM en Costa Rica está relacionada con la exposición ambiental a plaguicidas (EAP, controlando por acceso a servicios de salud, fecundidad, edad al primer embarazo y nivel socioeconómico. Métodos: Se corrió un modelo de regresión de Poisson. Se utilizaron técnicas de análisis espacial para probar si había autocorrelación espacial, y también se utilizó regresión con pesos geográficos. Resultados: La EAP tuvo una asociación directa y estadísticamente significativa con CM en mujeres de 45 años o más. La Razón de Tasas de Incidencia para la EAP fue de 1,29. Es decir, que después de controlar por otros factores de riesgo, mover un distrito al siguiente decil de EAP estuvo asociado con un incremento del 29% en la incidencia de CM para mujeres de 45+. La EAP fue significativa en algunas áreas rurales después de controlar por otros factores. Conclusiones: Parece que sí existe una relación entre el cáncer de mama y los plaguicidas. Debido a que esta exposición es prevenible, es importante el debate sobre este tema de salud pública. Poner más atención a las consecuencias a la salud que derivan de la exposición ambiental implicaría un cambio hacia la aplicación del principio precautorio. No se pueden extraer conclusiones de causalidad a partir de un estudio de tipo ecológico, como el presente.

  13. Qualidade de vida, estado nutricional e consumo alimentar de mulheres com câncer de mama em tratamento quimioterápico

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    Juliana Scheibler

    2016-11-01

    Full Text Available Objetivo: Avaliar a qualidade de vida, o estado nutricional e o consumo alimentar de mulheres diagnosticadas com câncer de mama em quimioterapia. Métodos: Estudo transversal e analítico envolvendo 70 mulheres, de 30 a 59 anos, em um hospital do Rio Grande do Sul, no período de maio a outubro de 2015. Aplicou-se o questionário European Organization for Research and Treatment of Câncer Quality of Life Questionnaire C30 (EORTC QLQ- C30. As variáveis antropométricas coletadas foram: peso atual, altura, circunferência braquial, circunferência da cintura, circunferência do quadril e prega cutânea tricipital. O consumo alimentar foi avaliado pelo recordatório alimentar de 24 horas. Resultados: Sobrepeso e obesidade foram encontrados respectivamente em 37,1% e 37% das mulheres de acordo com o índice de massa corporal. A média do consumo de calorias, carboidratos, lipídios, colesterol, fibras, cálcio e ferro foi significativamente inferior à recomendação, com destaque para nutrientes como fibras (91,4% dos casos, cálcio (87,7% dos casos e ferro (mais de 90% dos casos. No entanto, o consumo médio de proteínas (72,9% dos casos > 15% do VCT e vitamina C (mais de 50% dos casos foi superior ao recomendado. Conclusão: A qualidade de vida das mulheres com câncer de mama em quimioterapia foi considerada baixa e elas apresentaram uma elevada prevalência de sobrepeso e obesidade. Além disso, o consumo alimentar foi superior à recomendação para proteínas e vitamina C, e inferior para calorias, carboidratos, lipídios, colesterol, fibras, cálcio e ferro. Não foi observada associação significativa entre qualidade de vida e estado nutricional.

  14. Bases genómicas del cáncer de mama: avances hacia la medicina personalizada Genomic basis for breast cancer: advances in personalized medicine

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    Alfredo Hidalgo-Miranda

    2009-01-01

    Full Text Available El análisis genómico del cáncer de mama ha permitido el desarrollo de nuevas herramientas de predicción de riesgo y respuesta al tratamiento en esta enfermedad. Los perfiles de expresión génica han generado una mejor clasificación de los tumores e identificado subgrupos tumorales con características clínicas particulares. También se han reconocido patrones de pérdida y ganancia de DNA y expresión de micro-RNA relacionados con la carcinogénesis mamaria, tras identificar nuevos blancos potenciales. Los estudios de asociación del genoma completo han identificado variantes genéticas vinculadas con un mayor riesgo a presentar esta enfermedad, lo que hará posible tomar decisiones de salud pública mejor fundamentadas. Asimismo, los avances en la tecnología de secuenciación de DNA permitirán obtener información acerca de todas las alteraciones genéticas en los tumores. En esta revisión se describe el estado que guarda la investigación genómica en el cáncer de mama, así como la transición de estos hallazgos a la práctica clínica y la creación de las bases para el desarrollo de la medicina personalizada.Genomic analysis of breast cancer has allowed the development of new tools for the prediction of recurrence and the response to treatment of this disease. Gene expression profiles allow better tumor classification, identifying tumor subgroups with particular clinical outcomes. New potential molecular targets involved in breast carcinogenesis have also been identified through the analysis of DNA copy number aberrations and microRNA expression patterns. Whole genome association studies have identified genetic variants associated with a higher risk to develop this tumor, providing more information for public health decisions. Progress in DNA sequencing methods will also allow for the analysis of all the genetic alterations present in a tumor. In this review, we describe the current state of genomic research in breast cancer as

  15. Estudo Prospectivo das Características Sonográficas no Diagnóstico de Nódulos Sólidos da Mama

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    Paulinelli Régis Resende

    2002-01-01

    Full Text Available Objetivo: avaliar, por meio de estudo prospectivo, o valor de diferentes características ultra-sonográficas dos nódulos sólidos, na diferenciação de lesões malignas e benignas da mama. Métodos: foram incluídas 142 pacientes do Programa de Mastologia do Departamento de Ginecologia e Obstetrícia da Universidade Federal de Goiás com nódulos sólidos da mama. A ultra-sonografia mamária foi realizada pelo médico estagiário de mastologia, acompanhado do preceptor. As seis características estudadas foram: contornos, ecos internos, ecos posteriores, diferença dos diâmetros, ligamentos de Cooper e halo ecogênico. Cada descrição característica ultra-sonográfica foi analisada estatisticamente e comparada, após a exérese da lesão, com o resultado do exame anatomopatológico. Resultados: dentre as 142 pacientes incluídas no estudo, 90 (63% tiveram suas lesões ressecadas, com diagnóstico de 77 tumores benignos (86% e 13 de malignos (14%. Foram significantes no diagnóstico de malignidade as seguintes características ultra-sonográficas: presença de sombra acústica posterior (p=0,0001, contornos irregulares (p=0,0007, ecos internos heterogêneos (p=0,0015 e diâmetro ântero-posterior (AP maior que o látero-lateral (LL (p<0,0001. A presença de halo ecogênico no tumor e a visibilização dos ligamentos de Cooper espessados não influenciaram o diagnóstico de malignidade nesse estudo. Conclusão: a ultra-sonografia é um método diagnóstico que pode ajudar na diferenciação de tumores sólidos benignos e malignos. Os contornos irregulares, os ecos internos heterogêneos, a sombra posterior e o diâmetro AP maior que o LL, quando presentes, apresentaram alta correlação com o exame anatomopatológico de câncer.

  16. Histomorfometria da mama de ratas tratadas com estrogênio e/ou progestagênio Breast histomorphometry of rats treated with estrogen and/or progestogen

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    Sueli Maria Preda dos Santos Torres

    2011-04-01

    Full Text Available OBJETIVO: Avaliar as alterações histomorfométricas nas mamas de ratas tratadas com estrogênio e/ou progestagênio por curto período de tempo. MÉTODOS: Foram divididas em quatro grupos 40 ratas ooforectomizadas: GC-recebeu veículo; GE-recebeu benzoato de estradiol (37,6 µg/animal; GP-recebeu acetato de medroxiprogesterona (11,28 mg/animal e, GEP-recebeu benzoato de estradiol (37,6 µg/animal e acetato de medroxiprogesterona (11,28 mg/animal. No grupo GE, o estradiol foi administrado durante sete dias, por via subcutânea. Já no grupo EP o estradiol foi administrado nos primeiros sete dias e o progestagênio por mais 23 dias, por via subcutânea. Vinte e quatro horas após a última administração dos hormônios, os animais foram anestesiados e o primeiro par de mamas inguinais removido, imerso em formaldeído a 10% e processado para inclusão em parafina, sendo os cortes corados pela Hematoxilina-Eosina. Foram avaliadas a morfologia e a área ocupada pelo parênquima mamário, sendo os dados submetidos à análise de variância complementado pelo teste de Kruskal-Wallis (p GEP > GC; p OBJECTIVE: To evaluate the breast histomorphometric changes in rats treated with estrogen and/or progestogen for a short period of time. METHODS: Forty oophorectomized rats were divided into four groups: GC, vehicle; GE, treated with estradiol benzoate (37.6 mg/animal; GP, treated with medroxyprogesterone acetate (11.2 mg/animal and GEP, treated with estradiol benzoate (37.6 mg/animal plus medroxyprogesterone acetate (11.28 mg/animal. In GE group, estradiol was administered subcutaneously for seven days; in GEP group, estradiol was administered once in a day for the first seven days and the progestogen over the next 23 days both subcutaneously. Twenty-four hours after the last hormone administration, the animals were killed upon deep anesthesia and the first inguinal breasts were removed, fixed in 10% formaldehyde and processed to be included in paraffin

  17. Achieving community-based postpartum follow up in eastern Uganda: the field experience from the MamaMiso Study on antenatal distribution of misoprostol.

    Science.gov (United States)

    Ditai, James; Frye, Laura J; Durocher, Jill; Byrne, Meagan E; Ononge, Sam; Winikoff, Beverly; Weeks, Andrew D

    2017-10-26

    Advance provision of misoprostol to women during antenatal care aims to achieve broader access to uterotonics for the prevention of postpartum hemorrhage. Studies of this community-based approach usually involve antenatal education as well as timely postpartum follow-up visits to confirm maternal and neonatal outcomes. The MamaMiso study in Mbale, Uganda sought to assess the feasibility of conducting follow-up visits in the postpartum period following advance provision of misoprostol for postpartum hemorrhage prevention. MamaMiso recruited women during antenatal care visits. Participants were asked to contact the research team within 48 h of giving birth so that postpartum follow-up visits could be carried out at their homes. Women's baseline and delivery characteristics were collected and analyzed with respect to follow-up time ('on time' ≤ 7 days, 'late' > 7 days, and 'lost to follow up'). Every woman who was followed up late due to a failure to report the delivery was asked for the underlying reasons for the delay. When attempts at following up participants were unsuccessful, a file note was generated explaining the details of the failure. We abstracted data and identified themes from these notes. Of 748 recruited women, 700 (94%) were successfully followed up during the study period, 465 (62%) within the first week postpartum. The median time to follow up was 4 days and was similar for women who delivered at home or in facilities and for women who had attended or unattended births. Women recruited at the urban hospital site (as opposed to rural health clinics) were more likely to be lost to follow up or followed up late. Of the women followed up late, 202 provided a reason. File notes explaining failed attempts at follow up were generated for 164 participants. Several themes emerged from qualitative analysis of these notes including phone difficulties, inaccurate baseline information, misperceptions, postpartum travel, and the condition of the mother

  18. Evaluación económica del trastuzumab como tratamiento adyuvante en cáncer de mama HER2- positivo en Colombia

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    Jefferson Antonio Buendía

    2013-09-01

    Full Text Available Introducción. El trastuzumab es un anticuerpo monoclonal de reconocida efectividad para el tratamiento en mujeres con cáncer de mama positivo para HER2. Sin embargo, la mayoría de estudios de costo-efectividad se han llevado a cabo en países desarrollados. Objetivo. Determinar el costo-efectividad del tratamiento adyuvante con trastuzumab en mujeres concáncer de mama HER2+ en Colombia. Materiales y métodos. Se construyó un modelo de Markov, con ciclos de transición anuales y desde la perspectiva del pagador, para estimar los resultados clínicos y económicos derivados de la administración de trastuzumab en mujeres con HER2 positivo. El modelo incorpora cinco estados de transición: libre de enfermedad, recurrencia local, metástasis, falla cardiaca y muerte. La tasa de eventos y la razón de tazas instantáneas (0,51; IC95% 0,44-0,59; p<0,0001 se derivaron del reporte a cuatro años de los ensayos clínicos controlados N9831 y NSABP B-31. Los costos y las utilidades se estimados a partir de la literatura científica, utilizando una tasa de descuento del 5 % anual. Resultados. El modelo revela que la utilización de trastuzumab como tratamiento adyuvante prolongala expectativa de vida ajustada por calidad en 0,8 años, en comparación con la quimioterapia sin trastuzumab; a una razón de costo efectividad incremental (sic. de US$ 71.491 por año de vida ganado ajustado por calidad de vida. Conclusión. El tratamiento con trastuzumab durante un año no es costo-efectivo en Colombia, utilizando la definición de costo-efectividad de la OMS de menos de dos a tres veces el PIB per cápita por año de vida ganado ajustado por calidad de vida. doi: http://dx.doi.org/10.7705/biomedica.v33i3.832

  19. Informações para a elaboração de um manual educativo destinado às mulheres com câncer de mama Informaciones para el desarrollo de un manual educativo para mujeres con cáncer de mama Information to the development of an educational manual for women with breast cancer

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    Thais de Oliveira Gozzo

    2012-06-01

    Full Text Available O objetivo deste estudo foi identificar as informações necessárias para a elaboração de um manual educativo, para auxiliar a mulher no pré-operatório para tratamento do câncer de mama. Para isso, foram entrevistadas mulheres com o diagnóstico de câncer de mama e submetidas ao procedimento cirúrgico pela primeira vez no máximo há seis meses. Foram incluídas 51 mulheres na faixa etária de 25 a 84 anos; 32 tinham companheiro; 26, ensino fundamental incompleto; 24 consideraram sua ocupação como "do lar"; 43,1% foram submetidas à mastectomia; e 82,4% realizaram linfadenectomia axilar. Responderam um instrumento com dados sócio-demográficos e perguntas relativas às informações/orientações recebidas da equipe de saúde sobre tipos de cirurgia, internação, anestesia, uso do dreno e intercorrências. Para a elaboração de material educativo, conhecer esta realidade e as expectativas dos sujeitos é indispensável para que sejam priorizadas as necessidades dos clientes, e não somente as exigências terapêuticas.Este estudio objetivó identificar la información necesaria para desarrollar un material educativo para ayudar mujeres en el preoperatorio de cirugías para el tratamiento del cáncer de mama. Para ello, fueron entrevistadas mujeres con el diagnóstico de cáncer de mama y que se sometieron a cirugía por la primera vez en el máximo seis meses. Al todo 51 mujeres de 25 a 84 años fueron incluidas, 32 tenían una pareja, 26 tenían enseñanza primaria incompleta, 24 consideraron su ocupación como "ama de casa", el 43,1% fueron sometidas a mastectomía y el 82,4% realizaron linfadenectomía axilar. Las entrevistadas respondieron un instrumento con datos socio demográficos y cuestiones relativas a información/orientación recibida del personal de salud acerca de tipos de cirugía, hospitalización, anestesia, uso del dreno y complicaciones. Para la preparación del material educativo, conocer esta realidad y

  20. Câncer de mama e sofrimento psicológico: aspectos relacionados ao feminino El cáncer de mama y el sufrimiento psicológico: aspectos relacionados con el femenino Breast cancer and psychological suffering: female-related aspects

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    Lucia Cecilia da Silva

    2008-06-01

    Full Text Available No Brasil e no mundo a incidência do câncer de mama vem aumentando e aparecendo cada vez mais cedo na vida da mulher. O tratamento envolve mastectomia, quimioterapia e radioterapia, que, pelos seus efeitos físicos, podem comprometer em variados graus a auto-estima, a imagem corporal e a identidade feminina daquelas que recebem o diagnóstico da doença. Além disso, em nossa sociedade o câncer adquiriu significados relacionados a culpa, punição, deterioração, dor e morte, agravando o sofrimento psicológico das doentes. Neste sentido, este artigo tem o objetivo de levantar alguns pontos de reflexão no que se relaciona aos significados culturais da doença e do significado do seio enquanto ícone da identidade feminina. Partimos do princípio de que enriquecer a compreensão dos aspectos que influenciam o sofrimento da mulher com câncer de mama contribui para que os profissionais de saúde, principalmente os de saúde mental, possam assisti-la de maneira mais eficiente e abrangente.En Brasil y en el mundo la incidencia del cáncer de mama está en acenso. Es una enfermedad que está manifestándose cada vez más temprano en la vida de la mujer. El tratamiento envuelve mastectomía, quimioterapia y radioterapia que, por sus efectos físicos, pueden comprometer en variados grados la autoestima, la imagen corporal y la identidad femenina de aquellas mujeres que reciben el diagnóstico de la enfermedad. Además de eso, en nuestra sociedad el cáncer ha adquirido significados relacionados con la culpa, punición, deterioración, dolor y muerte, agravando el sufrimiento psicológico de las enfermas. En este sentido, este artículo tiene como objetivo levantar algunos puntos de reflexión en lo que se relaciona con los significados culturales de la enfermedad y del significado del seno como icono de la identidad femenina. Partimos del supuesto de que enriquecer la comprensión de los aspectos que pueden influenciar el sufrimiento de la mujer

  1. Prevenção de câncer de mama em mulheres idosas: uma revisão La prevención de cáncer de mama en mujeres ancianas: una revisión Prevention of breast cancer in elderly women: a review

    OpenAIRE

    Cecília Maria Resende Gonçalves de Carvalho; Cleidiane Maria Sales de Brito; Inez Sampaio Nery; Maria do Livramento Fortes Figueiredo

    2009-01-01

    Trata-se de um estudo de revisão bibliográfica nacional, que objetivou refletir sobre a prevenção do câncer de mama em idosas. Esta curiosidade surgiu a partir da constatação da transição demográfica brasileira e da evidente feminização da velhice, o que impõe demandas assistênciais específicas e integrais para este segmento populacional. Ressalta-se a necessidade de ampliar o conhecimento a cerca da problemática, bem como a superação do negligenciamento na prevenção desta patologia, especial...

  2. Dinâmica familiar: percepção de famílias de sobreviventes de câncer de mama Dinámica familiar: percepción de familias de sobrevivientes de cancer de mama Family dynamics: perceptions of breast cancer survivor's families

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    Raquel Gabrielli Biffi

    2009-03-01

    Full Text Available O estudo teve como objetivo identificar as percepções de familiares sobre a dinâmica de suas famílias após o câncer de mama em um dos seus membros. Estudo de abordagem qualitativa que tomou como referencial teórico o modelo de funcionamento familiar saudável proposto por Barnhill (1979. Participaram 23 familiares constituintes de 10 famílias. Os dados foram coletados, no período de maio a junho de 2002, por meio de entrevistas, e submetidos à análise de conteúdo. Os resultados revelaram aspectos positivos na dinâmica das famílias. A percepção dos processos de identidade, através da individuação e mutualidade, favoreceram a compreensão da dinâmica familiar. Os achados mostraram que o câncer de mama tem a capacidade de provocar alterações na família, e esta se utilizou dos potenciais de cada membro em particular na busca da estabilidade familiar.El estudio objetiva identificar las percepciones de familiares sobre la dinámica de sus familias, con cáncer de mama en uno de sus miembros. Estudio de abordaje cualitativo que tomó como referencial teórico el modelo de funcionamiento familiar saludable de Barnhill (1979. Participaron 23 familiares constituyentes de 10 familias. Los datos fueron obtenidos mediante entrevistas y sometidos a análisis de contenido. Los resultados revelaron aspectos positivos en la dinámica de las familias. La percepción de los procesos de identidad, a través de la individualización y mutualidad, favoreció la comprensión de la dinámica familiar. Según los resultados, el cáncer de mama tiene la capacidad de provocar alteraciones en la familia; por otro lado, éstas se utilizaron de los potenciales de cada miembro, en particular, en la búsqueda de la estabilidad familiar.The aim of this study was to identify the family members´ perceptions of their family dynamics, after breast cancer in one of its members. The study used a qualitative approach based on the theoretical model of healthy

  3. Conhecimentos dos acadêmicos sobre prevenção do câncer de mama Conocimiento de los estudiantes sobre la prevención del cáncer de mama Undergraduate students' knowledge about the prevention of breast cancer

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    Catia Regina Pirhardt Freitas

    2011-12-01

    Full Text Available Estudo com o objetivo de identificar o conhecimento dos acadêmicos, quanto aos fatores de prevenção para o câncer de mama. De natureza quantitativa, exploratória e descritiva, desenvolvido numa instituição de ensino superior do Estado de Santa Catarina, com 50 acadêmicos matriculados nos cursos de enfermagem, fisioterapia e psicologia no 1º semestre de 2008. A coleta de dados ocorreu de fevereiro a abril de 2008. Utilizou-se um questionário semi-estruturado e análise estatística descritiva. Os resultados apontaram que os acadêmicos dos cursos de enfermagem e fisioterapia demonstraram maior conhecimento sobre o tema. Os fatores de prevenção mencionados foram: consumo de legumes, verduras, frutas, exercícios físicos e amamentação. Conclui-se que o nível de conhecimento dos estudantes sobre os fatores de prevenção do câncer de mama, numa perspectiva interdisciplinar, é importante para repensar a inserção da educação em saúde como conteúdo curricular imprescindível na promoção de uma universidade saudável.Objetivo del estudio fue identificar el conocimiento de los estudiantes, acerca de los factores para la prevención del cáncer de mama. Un cuantitativo exploratorio y descriptivo, desarrollado en una institución de educación superior de Santa Catarina, Brasil, con 50 estudiantes matriculados en la enfermería, fisioterapia y psicología en el primer semestre de 2008. Los datos fueron recolectados de febrero a abril de 2008. Se utilizó un cuestionario semi-estructurado y estadística descriptiva. Los resultados mostraron que los estudiantes de enfermería y terapia física han demostrado mayor conocimiento sobre el tema que los estudiantes de psicología. Menciona factores: el consumo de verduras, frutas, el ejercicio físico y la lactancia. Se concluye que el nivel de conocimiento acerca de los factores que pueden prevenir el cáncer de mama, una perspectiva interdisciplinaria, es importante para reconsiderar

  4. Conhecimento das mulheres sobre o autoexame de mamas na atenção básica Conocimiento de las mujeres sobre el autoexamen de mamas en la atención Basic Women´s basic knowledge about breast self-examination

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    Verbena Santos Araújo

    2010-12-01

    Full Text Available O câncer de mama é um dos graves problemas de saúde pública pela sua alta incidência, importância epidemiologia e magnitude social. Este trabalho investigou o conhecimento das mulheres acerca do autoexame, através da detecção daquelas que o fazem e a sua periodicidade. Tratou-se de um estudo quantitativo, realizado na Estratégia Saúde da Família Pedreira I, em Campina Grande/PB. Direcionou-se às mulheres entre 30 e 39 anos, utilizando-se uma amostra de 20% do total de mulheres cadastradas na referida unidade. O material empírico foi obtido através de questionário, o qual foi submetido a uma análise temática e estatística. Os resultados apontaram que 94,59% das entrevistadas conhecem o câncer de mama, 83,7% relataram saber como se prevenir, 67% afirmaram realizar o autoexame, das quais apenas 16 % o fazem regularmente. Após a análise dos dados, observou-se que a maioria das mulheres ainda apresenta dúvidas em relação ao período de realização do autoexame, daí a importância de se fazer uma prevenção adequada. É primordial investir em políticas de saúde pública que informem e incentivem a prática do autocuidado, no período adequado, objetivando a prevenção e, consequentemente, a diminuição dos dados estatísticos notificados de câncer de mama.El cáncer de mama es uno de los graves problemas de salud pública dada su alta incidencia, importancia epidemiológica y magnitud social. Este trabajo investigó el conocimiento de las mujeres acerca del autoexamen, mediante la detección de aquellas que lo hacen y su periodicidad. Se trató de un estudio cuantitativo, realizado en la Estrategia de Salud de la Familia Pedreira I, en Campina Grande, Paraíba. Se orientó hacia mujeres entre 30 y 39 años, utilizando una muestra de 20% del total de las mujeres registradas en la referida unidad. El material empírico fue obtenido a través de un cuestionario, el cual fue sometido a análisis temático y estad

  5. Avaliação do tratamento cirúrgico nos pacientes com metástase vertebral secundária ao carcinoma de mama Evaluación del tratamiento quirúrgico en pacientes con metástasis vertebrales secundarias a carcinoma de mama Evaluation of surgical treatment of patients with vertebral metastasis secondary to breast carcinoma

    Directory of Open Access Journals (Sweden)

    Alex Veneziano Oliveira Junior

    2012-09-01

    Full Text Available OBJETIVO: Avaliar os resultados cirúrgicos dos pacientes com metástase vertebral secundária ao carcinoma de mama. MÉTODOS: Vinte e duas pacientes operadas com doença metastática vertebral secundária ao carcinoma de mama foram avaliadas no pré-operatório, pós-operatório imediato e depois de 1 mês e 6 meses do procedimento cirúrgico, usando a escala numérica da dor e o índice de incapacidade de Oswestry (ODI. RESULTADOS: As medidas para dor produziram valor de p de 0,0001 para a diferença entre o pré-operatório e o pós-operatório imediato, 0,0005 entre o pós-operatório imediato e 1 mês de pós-operatório, e 0,0908 entre 1 mês de pós-operatório e 6 meses de pós-operatório, portanto, encontram-se evidências de diferenças entre o pré-operatório e o pós-operatório imediato, assim como entre o pós-operatório imediato e após o 1º mês, mas não há tal evidência entre o 1º e o 6º mês de pós-operatório. Quanto ao ODI, a diferença foi significativa em todos os períodos. CONCLUSÃO: A cirurgia melhora a dor e diminui a incapacidade dos pacientes com doença metastática secundária ao carcinoma de mama.OBJETIVO: Evaluar los resultados quirúrgicos de los pacientes con metástasis vertebrales secundarias a carcinoma de mama. MÉTODOS: Veintidós pacientes operados con enfermedad metastásica espinal secundaria a carcinoma de mama fueron evaluadas antes de la cirugía, inmediatamente después de la operación y después de 1 mes y 6 meses de la cirugía, mediante la escala numérica del dolor y el índice de discapacidad de Oswestry. RESULTADOS: Las medidas para el dolor produjeron un valor de "p" de 0,0001 para la diferencia entre el pre y postoperatorio, 0,0005 entre el postoperatorio inmediato y un mes después de la operación, y 0,0908 entre 1 mes después de la cirugía y el postoperatorio de 6 meses, por lo tanto, son la evidencia de las diferencias entre el pre y postoperatorio, así como entre el

  6. Analytical applications of spectroscopy

    International Nuclear Information System (INIS)

    Creaser, C.S.

    1988-01-01

    This book provides an up to date overview of recent developments in analytical spectroscopy, with a particular emphasis on the common themes of chromatography - spectroscopy combinations, Fourier transform methods, and data handling techniques, which have played an increasingly important part in the development of all spectroscopic techniques. The book contains papers originally presented at a conference entitled 'Spectroscopy Across The Spectrum' held jointly with the first 'International Near Infrared Spectroscopy Conference' at the University of East Anglia, Norwich, UK, in July 1987, which have been edited and rearranged with some additional material. Each section includes reviews of key areas of current research as well as short reports of new developments. The fields covered are: Near Infrared Spectroscopy; Infrared Spectroscopy; Mass Spectroscopy; NMR Spectroscopy; Atomic and UV/Visible Spectroscopy; Chemometrics and Data Analysis. (author)

  7. Molecular characterization of breast cancer in young Brazilian women Caracterização Molecular do câncer de mama e mulheres brasileiras jovens

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    Leda Viegas de Carvalho

    2010-01-01

    Full Text Available OBJECTIVE: To evaluate the distribution of molecular subtypes of breast tumors diagnosed in young Brazilian women and to analyze the frequency of loss of heterozygocity (LOH in BRCA1 among different molecular subtypes of early-onset breast cancer. METHODS: Samples from 72 cases of invasive breast carcinoma diagnosed in women aged between 19 and 40 years were evaluated using an immunohistochemical panel of biomarkers. Three intragenic BRCA1 locus microsatellites, D17S1322, D17S1323, and D17S855, were PCR amplified from matched normal (lymphocyte and tumor DNAs for (LOH analysis. RESULTS: We found 13 cases (18% that had an immunohistochemical profile consistent with being basal-like. Forty cases (55% were luminal A type; 11% (8 cases were luminal B type, 13% (9 cases were HER2-overexpressing tumors and two cases were ER-/HER2- carcinomas lacking basal marker expression. Four of the 16 informative cases at D17S1322, one of the four informative cases at D17S855, and none of the five informative cases at D17S1323 displayed LOH (four basal-like and one Luminal A. Microsatellite instability (MSI at D17S855 and D17S1322 was found in two cases (one a basal-like and one Luminal A. CONCLUSION: In our study, basal-like tumor was the second most frequent molecular type among young Brazilian women and was only observed in women diagnosed under the age of 35 years. There was no significant difference of LOH at BRCA1 locus rates between basal-like breast tumors and not-basal-like breast tumors (p=0.62. LOH in BRCA1 and MSI in these breast cancers were not frequent but may indicate a small group of breast cancers with a specific molecular makeup.OBJETIVO: Avaliar a distribuição dos subtipos moleculares dos tumores de mama diagnosticados em mulheres brasileiras jovens e determinar a frequência de perda de heterozigose (LOH no gene BRCA1 entre os diferentes subtipos moleculares de tumores. MÉTODOS: Setenta e dois casos de carcinoma invasivo de mama

  8. Imagen corporal y autoestima en mujeres con cáncer de mama participantes en un programa de intervención psicosocial

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    Julia Sebastián

    2007-01-01

    Full Text Available En el tema del cáncer de mama, uno de los aspectos que ha suscitado mayor interés se refiere a la adaptación a los cambios en la imagen corporal que su tratamiento conlleva. Los objetivos que persigue nuestro trabajo se refieren a varios aspectos relacionados con la imagen corporal y la autoestima, como son: a comprobar la eficacia de un programa de intervención psicosocial que incide sobre la mejora de la imagen corporal y la autoestima, comparando dos grupos de intervención y control en cada uno de los momentos pretratamiento, post-tratamiento y seguimiento y b analizar la influencia de las variables socioeconómicas y médicas (tipo de cirugía y tipo de tratamiento en la imagen corporal y la autoestima. Los resultados muestran que para la imagen corporal, el grupo de intervención obtiene puntuaciones más elevadas que el grupo control en el postratamiento y seguimiento, mientras que para la autoestima, las diferencias sólo se dan en el seguimiento y aparece la relevancia de la variable tiempo transcurrido. Ninguna de las variables sociodemográficas fue significativa. En cuanto al tipo de cirugía, las mujeres tumorectomizadas tuvieron una mejor imagen corporal que las mastectomizadas.

  9. ANÁLISE DO PODER PREDITIVO DOS GENES ARD1A E NGX6 EM PACIENTES COM CÂNCER DE MAMA

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    Eliane Aline Ribeiro

    2017-02-01

    Full Text Available A identificação de marcadores moleculares poderá ser uma ferramenta adicional na seleção mais específica das pacientes onde a remoção dos linfonodos axilares é mais indicada. O objetivo é avaliar se os genes ARD1A e NGX6 são marcadores preditivos do envolvimento dos linfonodos axilares no câncer de mama. Foi realizada a análise de expressão gênica pela técnica de RT-qPCR em 51 amostras de tumor primário, sendo 28 tumores primários linfonodo negativo, 23 tumores primários linfonodo positivo e 11 metástases axilares correspondentes. A expressão diferencial para os genes analisados não foi observada quando realizadas as comparações entre os grupos de tumores primários linfonodo positivo, linfonodo negativo e linfonodos correspondentes. Estes resultados sugerem que os genes ARD1A e NGX6 não tem poder preditivo no envolvimento de linfonodos em tumores mamários humanos.

  10. y ERB-2 asociados al pronóstico del cáncer de mama en la población de Barranquilla (2004- 2005

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    Luz Alba Silvera Arenas

    2007-01-01

    Full Text Available Objetivo: Estudiar los patrones de expresión de los receptores de estrógenos, progestagenos y erb-2 en 85 pacientes atendidas en dos laboratorios de patología de Barranquilla. De Julio del 2004 a diciembre del 2005. Material y metodos: Estudio Descriptivo de corte. Se utilizaron 85 muestras incluidas en parafina de pacientes con diagnóstico de cáncer de mama para lo cual, se realizaron estudios inmunohistoquimicos con técnicas de peroxidasa – antiperoxidasa, se utilizaron anticuerpos monoclonales Dako contra estrógenos, progestágenos y ebr-2. Resultados: Se observó carcinoma in situ (4, cáncer mesenquimal (1, carcinoma lobulillar (1 y resto carcinomas ductales infiltrantes grados I, II y III. La inmunohistoquímica mostró positividad para estrógeno y progestágeno a nivel intracelular en 73 casos y negativos para erb-2, 11 fueron negativos para estrógeno y progestágeno, uno fue positivo para ebr-2. Conclusiones: 1. El carcinoma ductal infiltrante grado II y III fue la forma histológica que se presentó con mayor frecuencia (80 casos. 2. El 88,23 % de los casos fueron estrógeno y progestágeno positivos. 3. La relación entre el componente histológico y receptores hormonales positivos, sugieren buen pronóstico.

  11. A prática do auto-exame da mama em mulheres de baixa renda: um estudo de crenças The practice of breast self-examination among low-income women: a study of beliefs

    Directory of Open Access Journals (Sweden)

    Suy-Mey C. de Mendonça Gonçalves

    1999-06-01

    Full Text Available Tem sido objeto de preocupação da literatura médica e, mais recentemente, da psicológica, a alta prevalência do câncer de mama nas mulheres. O diagnóstico precoce muito favorece na redução dos índices e, entre os meios de detecção, o "auto-exame da mama" se caracteriza como uma prevenção secundária, sem custos e segura. Pesquisas demonstram, contudo, que a prática do auto-exame da mama é insatisfatória, principalmente em mulheres de escolaridade e nível sócio-econômico baixos. Segundo a Teoria da Ação Racional (TRA, a maioria dos comportamentos humanos pode ser explicada em termos de crenças comportamentais ou normativas. Nesse sentido, a presente pesquisa teve por objetivo investigar as crenças modais salientes desse estrato populacional, desprovido de informações claras e serviços de saúde efetivos, através de um levantamento em uma amostra de 40 mulheres entrevistadas em ambulatórios públicos de João Pessoa (PB. As entrevistas continham itens sobre as vantagens e desvantagens do auto-exame da mama, conhecimentos e dados sócio-demográficos. A média de idade da amostra foi de 32,5 anos (DP = 11,37. As entrevistas indicaram um total de 132 crenças comportamentais, que foram categorizadas em nove dimensões e 166 crenças normativas, categorizadas em quatro dimensões. Estes resultados demonstraram que as crenças influenciam a adesão à prática do auto-exame da mama e servirão de base para que os profissionais que lidam com campanhas públicas de prevenção voltem sua atenção para esses aspectos e abordem conteúdos que promovam não só a prática do auto-exame da mama, mas outras estratégias preventivas nesta significativa população.It has been object of concern to the medical literature and, more recently, to psychology, the high prevalence of breast cancer in women. The early diagnosis helps to decrease the index, and among the methods for detection, the "breast self-examination" appears as a

  12. Introductory Raman spectroscopy

    CERN Document Server

    Ferraro, John R

    2012-01-01

    Praise for Introductory Raman Spectroscopy Highlights basic theory, which is treated in an introductory fashion Presents state-of-the-art instrumentation Discusses new applications of Raman spectroscopy in industry and research.

  13. Sub-Doppler spectroscopy

    International Nuclear Information System (INIS)

    Hansch, T.W.

    1983-01-01

    This chapter examines Doppler-free saturation spectroscopy, tunable cw sources, and Doppler-free two-photon spectroscopy. Discusses saturation spectroscopy; continuous wave saturation spectroscopy in the ultraviolet; and two-photon spectroscopy of atomic hydrogen 1S-2S. Focuses on Doppler-free laser spectroscopy of gaseous samples. Explains that in saturation spectroscopy, a monochromatic laser beam ''labels'' a group of atoms within a narrow range of axial velocities through excitation or optical pumping, and a Doppler-free spectrum of these selected atoms is observed with a second, counterpropagating beam. Notes that in two-photon spectroscopy it is possible to record Doppler-free spectra without any need for velocity selection by excitation with two counterpropagating laser beams whose first order Doppler shifts cancel

  14. Tumor neuroendócrino primário de mama: relato de três casos e revisão de literatura Primary neuroendocrine carcinoma of the breast: case report and literature review

    Directory of Open Access Journals (Sweden)

    Mariana Novaes Pinheiro

    2012-04-01

    Full Text Available Os tumores neuroendócrinos primários de mama (TNPMs são incomuns e não há consenso quanto a tratamento e prognóstico. No presente trabalho, foram revisados os diagnósticos de 1.184 pacientes com câncer de mama atendidos no Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (HCFMRP/USP, identificando três casos que preenchiam os critérios de TNPM, segundo classificação estabelecida pela Organização Mundial da Saúde (OMS em 2003. Foram avaliados os achados clinicopatológicos e imuno-histoquímicos e as terapias realizadas, buscando caracterizar os padrões histopatológicos e de comportamento distintos dos carcinomas convencionais de mama.Primary neuroendocrine breast carcinomas (NECs are uncommon. Moreover, there is no consensus as to its treatment and prognosis. In this study, the diagnoses of 1,184 cases of breast cancer treated at Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto/Universidade de São Paulo (HCFMRP/USP were reviewed. Three among them fulfilled the criteria for primary NEC according to the classification established by the World Health Organization (WHO in 2003. Clinicopathological, immunohistochemical features and treatments were assessed in order to characterize histopathological and distinct patterns of conventional breast carcinomas.

  15. New recommendations from the United States Government on breast cancer screening Nuevas recomendaciones del Gobierno de los Estados Unidos sobre el tamizaje del cáncer de mama

    Directory of Open Access Journals (Sweden)

    2002-03-01

    Full Text Available En los últimos años ha habido grandes controversias y debates sobre la eficacia de diferentes métodos de detección del cáncer de mama. En un esfuerzo por proporcionar orientaciones más claras tanto a las mujeres como a los profesionales de la salud, un grupo de expertos reunido por el Gobierno de los Estados Unidos de América, el llamado U.S. Preventive Services Task Force (USPSTF, publicó en febrero de 2002 un informe en el que se afirma que la mamografía permite salvar vidas y que su realización debería comenzar en la quinta década de la vida de la mujer. Este grupo de expertos dice también que no hay datos suficientes para hacer recomendaciones a favor o en contra de otros dos métodos de detección: el examen clínico de la mama y la autoexploración mamaria rutinaria. El presente documento resume las recomendaciones del informe del USPSTF, así como las principales consideraciones clínicas y pruebas científicas que presentó en áreas como la exactitud y fiabilidad de las pruebas de detección, la eficacia de la detección temprana del cáncer de mama, cuándo detener el tamizaje, el intervalo de tiempo más apropiado entre las pruebas y los potenciales perjuicios del tamizaje.

  16. Sono, qualidade de vida e depressão em mulheres no pós-tratamento de câncer de mama Sleep, quality of life and depression in women in breast cancer post-treatment

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    Renatha El Rafihi-Ferreira

    2012-01-01

    Full Text Available Este trabalho investigou a qualidade de sono de mulheres com câncer de mama e suas relações com qualidade de vida e depressão. Cinqüenta mulheres com câncer de mama (grupo clínico e cinqüenta controles responderam um questionário médico-demográfico e ao instrumento Pittsburgh Sleep Quality Index. O grupo clínico também respondeu aos instrumentos Quality of Life Cancer-Survivor e Brief Zung Self-Rating Depression Scale. Verificou-se que mulheres com câncer tinham significativamente mais queixas de nictúria, calor e despertares noturnos. O grupo clínico com má qualidade do sono apresentou comprometimento na qualidade de vida e mais sintomas de depressão. Em geral, a qualidade de sono em mulheres com câncer de mama pode predizer a qualidade de vida e o bem estar psicológico.This study investigated the sleep quality of women with breast cancer and their relationship with quality of life and depression. Fifty women with breast cancer (clinical group and a control group of other 50 women without the disease answered a clinical-demographic questionnaire and the Pittsburgh Sleep Quality Index. The clinical group also completed the Quality of Life Cancer-Survivor and the Brief Zung Self-Rating Depression Scale questionnaires. It was found that women with breast cancer had significantly more complaints of nocturia, heat and nighttime awakenings. The clinical group with poor quality of sleep reported impaired quality of life and more symptoms of depression. In general terms, sleep quality in women with breast cancer can predict their quality of life and psychological well-being.

  17. Advances in atomic spectroscopy

    CERN Document Server

    Sneddon, J

    1997-01-01

    This series describes selected advances in the area of atomic spectroscopy. It is primarily intended for the reader who has a background in atmoic spectroscopy; suitable to the novice and expert. Although a widely used and accepted method for metal and non-metal analysis in a variety of complex samples, Advances in Atomic Spectroscopy covers a wide range of materials. Each Chapter will completely cover an area of atomic spectroscopy where rapid development has occurred.

  18. Basic molecular spectroscopy

    CERN Document Server

    Gorry, PA

    1985-01-01

    BASIC Molecular Spectroscopy discusses the utilization of the Beginner's All-purpose Symbolic Instruction Code (BASIC) programming language in molecular spectroscopy. The book is comprised of five chapters that provide an introduction to molecular spectroscopy through programs written in BASIC. The coverage of the text includes rotational spectra, vibrational spectra, and Raman and electronic spectra. The book will be of great use to students who are currently taking a course in molecular spectroscopy.

  19. Symposium on atomic spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    1979-01-01

    Topics covered by the conference include: fast beam spectroscopy; astrophysical and other spectra; highly ionized spectroscopy; complex spectra; rydberg levels; fine structure, hyperfine structure and isotope shift; lineshapes; lifetimes, oscillator strengths and Einstein coefficients; and spectroscopy with lasers. Abstracts of the conference papers are presented. (GHT)

  20. Symposium on atomic spectroscopy

    International Nuclear Information System (INIS)

    1979-01-01

    Topics covered by the conference include: fast beam spectroscopy; astrophysical and other spectra; highly ionized spectroscopy; complex spectra; rydberg levels; fine structure, hyperfine structure and isotope shift; lineshapes; lifetimes, oscillator strengths and Einstein coefficients; and spectroscopy with lasers. Abstracts of the conference papers are presented

  1. International Classification of Functioning, Disability, and Health in women with breast cancer: a proposal for measurement instruments Clasificación Internacional de Funcionalidad, Incapacidad y Salud en mujeres con cáncer de mama: propuesta de instrumentos para medición Classificação Internacional de Funcionalidade, Incapacidade e Saúde em mulheres com câncer de mama: proposta de instrumentos para mensuração

    Directory of Open Access Journals (Sweden)

    Rosalina Jorge Koifman

    2013-06-01

    Full Text Available The International Classification of Functioning, Disability, and Health (ICF aims at standardization, but its applicability requires consistent instruments. In Brazil, invasive therapeutic approaches are frequent, leading to functional alterations. The current study thus aimed to identify and discuss instruments capable of measuring ICF core set codes for breast cancer. The review included ICF studies in women with breast cancer diagnosis and studies with the objective of translating and validating instruments for the Brazilian population, and consistent with the codes. Review studies, systematic or not, were excluded. Eight instruments were selected, and the WHOQOL-Bref was the most comprehensive. The use of various instruments showed 19 coinciding codes, and the instruments as a whole covered 58 of the total of 81 codes. The use of multiple instruments is time-consuming, so new studies are needed to propose parsimonious tools capable of measuring functioning in women treated for breast cancer.La Clasificación Internacional de Funcionalidad, Incapacidad y Salud (CIF tiene por objetivo una normatización, sin embargo, su aplicabilidad requiere instrumentos compatibles. En Brasil, los enfoques terapéuticos invasivos son frecuentes, conduciendo a alteraciones funcionales. En este sentido, el presente estudio tiene por objetivo identificar y discutir los instrumentos capaces de medir los códigos del core set de la CIF para el cáncer de mama. Se incluyeron estudios de la CIF en mujeres con diagnóstico de cáncer de mama y estudios con el fin de traducir y validar instrumentos para la población brasileña, compatibles con los códigos. Los estudios de revisión sistemática o no referentes a la literatura relacionada se excluyeron. Se seleccionaron ocho instrumentos, siendo el WHOQOL-BREF el más englobador. Con el uso de varios instrumentos se observaron 19 códigos coincidentes, siendo contemplados 58 de un total de 81 códigos. La utilizaci

  2. Perception of Family Functioning Among Relatives of Women Who Survived Breast Cancer: Gender Differences Percepción del funcionamiento familiar entre familiares de mujeres sobrevivientes de cáncer de mama: diferencias de género Percepção do funcionamento familiar entre familiares de mulheres sobreviventes ao câncer de mama: diferenças de gênero

    Directory of Open Access Journals (Sweden)

    Raquel Gabrielli Biffi

    2010-04-01

    Full Text Available The aim of this study was to know how female and male family members perceive their family dynamics after breast cancer. Barnhill's proposal of a healthy family functional model served as the theoretical framework for this qualitative research. The data was obtained through interviews and submitted to content analysis. The results showed that, in the adaptation process to breast cancer, both genders use clear communication in order to achieve family balance and present interactions characterized by mutual and individual feelings. The responsibility for maintaining the family is attributed to the daughters, whereas the male elements show more disorganization with regard to family functions. The bond between family members of both genders who are affected by breast cancer shows important interactions in the identity process.El objetivo de este estudio fue conocer como familiares del género femenino y masculino perciben la dinámica de sus familias, después del cáncer de mama. Es una investigación de abordaje cualitativo que tomó como marco teórico el modelo de funcionamiento familiar saludable, propuesto por Barnhill. Participaron 23 familiares constituyentes de 10 familias. Los datos fueron recolectados por medio de entrevistas y sometidos al análisis de contenido. Los resultados mostraron que, en el proceso de adaptación al cáncer de mama, ambos géneros utilizan la comunicación clara para la búsqueda del equilibrio familiar y presentan interacciones caracterizadas por sentimientos de mutualidad e individuación. A las hijas es atribuida la responsabilidad por la manutención de la familia y los elementos del género masculino demuestran mayor desorganización en el funcionamiento familiar. El vínculo de los familiares de ambos géneros, que experimentan el cáncer de mama, presenta interacciones importantes en el proceso de identidad.O objetivo deste estudo foi conhecer como familiares do gênero feminino e masculino percebem a din

  3. Imagem corporal de mulheres com câncer de mama: uma revisão sistemática da literatura Body image of women with breast cancer: a systematic review of literature

    Directory of Open Access Journals (Sweden)

    Daniela Barsotti Santos

    2011-05-01

    Full Text Available A mulher passa por um importante processo de reformulação da imagem corporal quando lida com o câncer de mama. Este artigo objetiva a compreensão da relação que o câncer de mama e seus tratamentos têm no processo de (reelaboração da imagem corporal das mulheres, visando assim ao fomento de subsídios para a formação e a capacitação de profissionais de saúde mais atentos à promoção da qualidade de vida delas. Foi realizada uma revisão sistemática da literatura de artigos científicos publicados entre 2004 e 2009 disponíveis em três bases de dado; 56 artigos foram revisados e agrupados em quatro categorias. Destacamos a necessidade de mais estudos que contemplem características socioculturais de mulheres com câncer de mama, sobre diferenças na (reelaboração da imagem corporal de mulheres jovens e de mulheres mais velhas, e de publicações brasileiras sobre a experiência pessoal e aspectos socioculturais específicos de mulheres com câncer de mama.Women experience a major process of reshaping their body image when they deal with breast cancer. This article seeks to understand the relationship that breast cancer and its treatment have in the process of (reconstruction of a woman's body image. The ultimate objective is to promote knowledge to train health professionals to become more aware of a woman's quality of life. A systematic review of the literature of scientific articles published between 2004 and 2009 available in three scientific databases was conducted and a total of 56 articles were reviewed and grouped into four thematic categories. There is a pressing need for further studies on the socio-cultural characteristics of women with breast cancer, the differences of (reconstruction of body image of young and older women, and Brazilian publications about the personal experience and socio-cultural context of women with breast cancer.

  4. Perfil sócio demográfico e possíveis fatores de risco em mulheres com câncer de mama: um retrato da amazônia

    Directory of Open Access Journals (Sweden)

    Nathalia Santos da Penha

    2013-12-01

    Full Text Available O câncer de mama é a neoplasia que mais acomete mulheres no mundo e no Brasil, sendo que a ocorrência desta está relacionada com exposição a diversos fatores de risco. Este estudo observou possíveis variáveis que poderiam ser fatores de risco para o câncer de mama em 18 mulheres diagnosticadas com essa neoplasia em um Hospital Oncológico em Belém-Pará, utilizando abordagem observacional, descritiva e prospectiva. Os dados foram coletados durante cinco meses, através de um questionário acerca de aspectos sócio demográficos, hábitos de vida, características reprodutivas e antecedentes familiares de câncer de mama. A média de idade ao diagnóstico foi 49 anos (± 10,74, sendo que 44,4% estavam na faixa etária de 41 a 50 anos, 61,1% eram procedentes da Região Metropolitana de Belém e 50% tinham ensino médio. Encontrava-se em sobrepeso 44,4% das entrevistadas e 38,9% eram obesas. Observou-se que 5,6% tiveram menarca em idade inferior a 12 anos e 11,1% entraram em menopausa depois dos 50 anos. Apenas 5,6% das pacientes tiveram a primeira gestação após os 30 anos. Houve casos de aborto em 33,3% das pacientes. Todas as pacientes amamentaram, sendo que 11,1% o fizeram por menos de seis meses. Das pacientes entrevistadas, 61,1% utilizaram contraceptivos orais. Apenas 5,6% delas possuíam historia familiar de neoplasia de mama. Dessa forma, a idade avançada e a massa corpórea acima do ideal foram as variáveis com maior frequência, o que demonstra a necessidade de conhecer os fatores de risco de forma regional, para contribuir com a prevenção e diagnóstico precoce dessa neoplasia.

  5. Actividad física a través de la telerehabilitación en el cáncer de mama: Una revisión de la literatura

    OpenAIRE

    Roldán Jiménez, Cristina

    2017-01-01

    Cartel presentado en el 3er Congreso Internacional de Comunicación en Salud (3ICHC), celebrado los días 19 y 20 de octubre de 2017 en la Universidad Carlos III de Madrid. En 2015, los nuevos casos de cáncer de mama (CM) representaron un 29%, mientras que las mortalidades asociadas al cáncer representaron un 15% de todos los cánceres en mujeres 1. Por otro lado, se sabe que la inactividad física está asociada con un aumento de probabilidad de desarrollo de CM 2,3, mientras que la actividad ...

  6. Aspectos técnicos da ressonância magnética de mama com meio de contraste: revisão da literatura Technical aspects of contrast-enhanced magnetic resonance imaging of the breast: literature review

    Directory of Open Access Journals (Sweden)

    Denise de Deus Leopoldino

    2005-08-01

    Full Text Available Com a difusão do uso de meios de contraste, avanços na tecnologia das bobinas de superfície e desenvolvimento de protocolos rápidos de aquisição de imagens, a ressonância magnética (RM de mama com meio de contraste tem-se mostrado importante modalidade na detecção, diagnóstico e estadiamento do câncer de mama. Apesar desses avanços, existem alguns pontos não consensuais no que diz respeito aos aspectos técnicos e critérios de interpretação de imagem da RM contrastada de mama. Neste artigo fazemos revisão bibliográfica dos parâmetros de interpretação de imagens e aspectos técnicos da RM de mama, incluindo considerações sobre a "performance" do equipamento, bobinas de radiofreqüência dedicadas, modo de utilização de contraste paramagnético, técnicas de supressão de gordura, planos de aquisição, seqüências de pulso e fontes de artefato.With the advances in surface coil technology and the development of new imaging protocols in addition to the increase of the use of contrast agents, contrast enhanced magnetic resonance imaging (MRI has emerged as a promising modality for detection, diagnosis and staging of breast cancer. Despite these advances, there are some unresolved issues, including no defined standard technique for contrast-enhanced breast MRI and no standard criteria of interpretation for the evaluation of such studies. In this article, we review the literature and discuss the general requirements and recommendations for contrast agent-enhanced breast MRI, including image interpretation criteria, MR equipment, dedicated radiofrequency coils, use of paramagnetic contrast agents, fat-suppression techniques, planes of acquisition, pulse sequence specifications and artifact sources.

  7. Papel fisiológico e implicaciones fisiopatológicas y terapéuticas de los sistemas somatostatina, cortistatina y sus receptores en el cáncer de mama y obesidad

    OpenAIRE

    Villa Osaba, Alicia

    2016-01-01

    La glándula mamaria es un órgano ampliamente estudiado en gran medida porque el cáncer de mama representa una de las principales causas de muerte en países desarrollados . El desarrollo y la fisiología de la glándula mamaria están regulados por múltiples factores hormonales que pueden tener tanto un origen sistémico como local, produciéndose en la propia glándula . Concretamente, la hormona del crecimiento (GH) y factor de crecimiento similar a insulina tipo I (IGF-I) juegan un papel crucial...

  8. Análisis de la judicialización en la gestión de medicamentos. Caso de estudio del Trastuzu mab en el tratamiento del cáncer de mama en Costa Rica

    OpenAIRE

    Adrián Ernesto Rechnitzer Mora

    2014-01-01

    Estudio de caso de la judicialización de la salud en Costa Rica, como lo fue el relacionado con el medicamento Trastuzumab para el tratamiento del cáncer de mama; locual ayudó a comprender holísticamente la judicialización en la gestión de medicamentos. Se explican las causas y consecuencias de la judicialización de la gestión del medicamento Trastuzumab, se studian los roles jugados por cada entidad (organización de pacientes, médicos tratantes, Sala Constitucional, Caja Costarricense de Seg...

  9. Identificar y análizar los elementos comunicacionales que se generan en la actualidad en la Fiesta de la Mama Negra de Noviembre del 2010 en la ciudad de Latacunga en la provincia de Cotopaxi.

    OpenAIRE

    Cobo Insuasti, Karina Elizabeth; Quisigüiña Lucero, Karina Lileth; Ubilla Freire, Rosa América

    2012-01-01

    La Fiesta de la Mama Negra, es el lugar de la memoria, es una fiesta en la cual se evidencia el mestizaje, por la mezcla de sus personajes y símbolos vivenciados en las dos celebraciones la de Septiembre y la de Noviembre objeto de estudio. La investigación del presente trabajo se basó en la comunicación para entender la Fiesta Novembrina en sus dimensiones comunicacionales, partiendo desde las distintas ideologías que predominan en los sectores subalternos y hegemónicos; y los...

  10. Alteraciones de la autoestima y la imagen corporal y síntomas de depresión y ansiedad en una muestra de pacientes mexicanas con cáncer de mama

    Directory of Open Access Journals (Sweden)

    Sheila Pintado-Cucarella

    2016-07-01

    Full Text Available En los últimos años se ha planteado que el cáncer de mama constituye mundialmente la primera causa de muerte en la mujer. En México se ha incrementado en los últimos treinta años, al pasar del decimoquinto al segundo lugar general como causa de muerte entre mujeres mayores de 25 años de edad, y ocupar el primer lugar en mujeres de 35 años.     DOI: http://dx.doi.org/10.21149/spm.v58i4.8018

  11. Delay of medical care for symptomatic breast cancer: a literature review El retraso en la atención médica del cáncer de mama: una revisión de la literatura

    Directory of Open Access Journals (Sweden)

    Karla Unger-Saldaña

    2009-01-01

    Full Text Available The purpose of this paper is to organize and summarize existing information on delayed medical attention for women with breast cancer and identify research needs in this area. This review is organized in six parts: origins and permanence of the message "do not delay" medical attention for potential cancer symptoms; definition and classification of breast cancer delay; impact of delay on breast cancer prognosis; factors related to breast cancer delay and the ways these have been studied; the study of breast cancer delay in Mexico; and directions for future research in developing countries, with a special focus on Mexico. We point out the need of a more integral study of delay that takes into account socio-structural and health services factors, in order to find modifiable factors towards which political actions should be directed to improve breast cancer medical attention in underdeveloped countries.El objetivo de esta revisión es integrar información disponible con respecto al retraso en la atención médica del cáncer de mama e identificar necesidades de investigación en este tema. La revisión consta de seis apartados: origen del mensaje "no retrasar" ante la aparición de síntomas de cáncer; definición y clasificación del retraso en la atención del cáncer de mama; impacto del retraso sobre el pronóstico de la enfermedad; factores asociados con el retraso; la investigación del retraso en la atención del cáncer de mama en México; y necesidades de investigación en este tema. Se señala la necesidad de estudiar el retraso en la atención del cáncer de mama de forma más integral, tomando en cuenta características socio-estructurales y de servicios de salud, para identificar factores modificables hacia los cuales dirigir esfuerzos para mejorar la atención de esta enfermedad en países en vías de desarrollo.

  12. Spectroscopy in catalysis : an introduction

    NARCIS (Netherlands)

    Niemantsverdriet, J.W.

    2000-01-01

    Spectroscopy in Catalysis describes the most important modern analytical techniques used to investigate catalytic surfaces. These include electron spectroscopy (XPS, UPS, AES, EELS), ion spectroscopy (SIMS, SNMS, RBS, LEIS), vibrational spectroscopy (infrared, Raman, EELS), temperature-programmed

  13. Advances in atomic spectroscopy

    CERN Document Server

    Sneddon, J

    2000-01-01

    This fifth volume of the successful series Advances in Atomic Spectroscopy continues to discuss and investigate the area of atomic spectroscopy.It begins with a description of the use of various atomic spectroscopic methods and applications of speciation studies in atomic spectroscopy. The emphasis is on combining atomic spectroscopy with gas and liquid chromatography. In chapter two the authors describe new developments in tunable lasers and the impact they will have on atomic spectroscopy. The traditional methods of detection, such as photography and the photomultiplier, and how they are being replaced by new detectors is discussed in chapter three. The very active area of glow discharge atomic spectrometry is presented in chapter four where, after a brief introduction and historical review, the use of glow discharge lamps for atomic spectroscopy and mass spectrometry are discussed. Included in this discussion is geometry and radiofrequency power. The future of this source in atomic spectroscopy is also dis...

  14. Cytogenetic effects of near ultraviolet radiation in normal and systemic lupus erythematosus lymphocytes

    Energy Technology Data Exchange (ETDEWEB)

    Caporossi, D.; Sebastiani, G.; Nicoletti, B. (Rome 2 University (Italy). Department of Public Health and Cellular Biology); Masala, C. (' La Sapienza' University, rome (Italy). Institute of Infectious and Tropical Diseases)

    1990-03-01

    The authors conducted a study on the spontaneous and UV-A induced frequency of chromosomal breaks and sister-chromatid exchanges (SCE) in purified lymphocytes from normal donors and from systemic lupus erythematosus (SLE) patients who were in clinical remission at the time of the study. Our results show that although SLE lymphocytes exhibit a higher frequency of spontaneous SCEs than controls, the rate of chromosomal breakage is comparable in the 2-groups. In both controls and patients, irradiation with UV-A (320-400 nm) increases the SCE values but does not significantly affect the frequency of chromosomal aberrations. (author). 14 refs.; 1 fig.; 3 tabs.

  15. Reddened, Redshifted, or Intrinsically Red? Understanding Near-ultraviolet Colors of Type Ia Supernovae

    Energy Technology Data Exchange (ETDEWEB)

    Brown, Peter J.; Landez, Nancy J. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A. and M. University, Department of Physics and Astronomy, 4242 TAMU, College Station, TX 77843 (United States); Milne, Peter A. [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Stritzinger, Maximilian D., E-mail: pbrown@physics.tamu.edu [Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark)

    2017-02-20

    The intrinsic colors of Type Ia supernovae (SNe Ia) are important to understanding their use as cosmological standard candles. Understanding the effects of reddening and redshift on the observed colors are complicated and dependent on the intrinsic spectrum, the filter curves, and the wavelength dependence of reddening. We present ultraviolet and optical data of a growing sample of SNe Ia observed with the Ultraviolet/Optical Telescope on the Swift spacecraft and use this sample to re-examine the near-UV (NUV) colors of SNe Ia. We find that a small amount of reddening ( E ( B − V ) = 0.2 mag) could account for the difference between groups designated as NUV-blue and NUV-red, and a moderate amount of reddening ( E ( B − V ) = 0.5 mag) could account for the whole NUV-optical differences. The reddening scenario, however, is inconsistent with the mid-UV colors and color evolution. The effect of redshift alone only accounts for part of the variation. Using a spectral template of SN2011fe, we can forward model the effects of redshift and reddening and directly compare those with the observed colors. We find that some SNe are consistent with reddened versions of SN2011fe, but most SNe Ia are much redder in the uvw 1 − v color than SN2011fe reddened to the same b − v color. The absolute magnitudes show that two out of five NUV-blue SNe Ia are blue because their near-UV luminosity is high, and the other three are optically fainter. We also show that SN 2011fe is not a “normal” SN Ia in the UV, but has colors placing it at the blue extreme of our sample.

  16. Near-ultraviolet removal rates for subgingival dental calculus at different irradiation angles

    Science.gov (United States)

    Schoenly, Joshua E.; Seka, Wolf D.; Rechmann, Peter

    2011-07-01

    The laser ablation rate of subgingival dental calculus irradiated at a 400-nm-wavelength, 7.4-mJ pulse energy, and 85- and 20-deg irradiation angles is measured using laser triangulation. Three-dimensional images taken before and after irradiation create a removal map with 6-μm axial resolution. Fifteen human teeth with subgingival calculus are irradiated in vitro under a cooling water spray with an ~300-μm-diam, tenth-order super-Gaussian beam. The average subgingival calculus removal rates for irradiation at 85 and 20 deg are 11.1+/-3.6 and 11.5+/-5.9 μm/pulse, respectively, for depth removal and 4.5+/-1.7×105 and 4.8+/-2.3×105 μm3/pulse, respectively, for volume removal. The ablation rate is constant at each irradiation site but varies between sites because of the large differences in the physical and optical properties of calculus. Comparison of the average depth- and volume-removal rates does not reveal any dependence on the irradiation angle and is likely due to the surface topology of subgingival calculus samples that overshadows any expected angular dependence.

  17. In vivo photoinactivation of Escherichia coli ribonucleoside reductase by near-ultraviolet light

    International Nuclear Information System (INIS)

    Peters, J.

    1977-01-01

    Some experimental work is described showing that near-U.V. irradiation of E.coli cells selectively destroys RDP-reductase (ribonucleoside diphosphate reductase) activity in vivo are providing evidence relating the loss of RDP-reductase to loss of cellular visibility and the inactivity of irrdiated cells to support the replication of DNA phages. The data are consistent with the interpretation that the principal cause in the killing of exponentially growing E.coli cells by near-U.V., and the loss of ability of irradiated host cells to support the replication of DNA phages, is the photoinactivation of the RDP-reductase complex. (U.K.)

  18. Mutation of Haemophilus influenzae transforming DNA in vitro with near-ultraviolet radiation: action spectrum

    Energy Technology Data Exchange (ETDEWEB)

    Cabrera-Juarez, E; Setlow, J K [Escuela Nacional de Ciencias Biologicas, Mexico City. Dept. de Bioquimica; Oak Ridge National Lab., Tenn. (USA). Biology Div.)

    1976-05-01

    Mutations were produced in purified transforming DNA from Haemophilus influenzae by near UV radiation and were assayed as mutants among cells transformed with irradiated DNA. The maximum efficiency of mutation induction was at around 334 nm, and the efficiency dropped off steeply at lower and higher wavelengths. The difference between the action spectrum for mutation and that for the oxygen-independent inactivation of transforming DNA, which had a shoulder at 365 nm, indicates that there are different lesions involved in the inactivating and mutagenic effects of near-UV. The presence of histidine during irradiation enhanced the mutagenic effect at 334 and 365 nm, although it protected against inactivation at 365 nm. The effective near-UV wavelengths for in vitro mutation are to some extent the same as the effective wavelengths for mutation in vivo reported previously. These findings indicate that mutations are produced in vivo by near-UV with DNA as the primary target molecule rather than by a secondary non-photochemical reaction between DNA and some other cell component.

  19. Blue and near ultraviolet reversible photoreaction in the induction of fungal conidiation

    International Nuclear Information System (INIS)

    Kumagai, T.

    1982-01-01

    The effects of blue light and near UV light on the induction of conidiation in the fungus, Alternaria tomato, were investigated. Induction of conidiation was repeatedly controlled by alternating doses of near UV light and blue light. When the final light was near UV, conidiation was induced and conidia developed in the following darkness; when it was blue, the induction of conidiation was suppressed. When conidiation was induced by irradiation with a light mixed with near UV and blue, not only the time lag for inducing conidiation but also the amount of conidia formed were regulated by the fluence rates of both those lights. Thus, 'mycochrome' is considered to function as a photoreceptor system in the induction of conidiation of this fungus. (author)

  20. Mutagenesis and cytotoxicity in human epithelial cells by far- and near-ultraviolet radiations: action spectra

    International Nuclear Information System (INIS)

    Jones, C.A.; Huberman, E.; Cunningham, M.L.; Peak, M.J.

    1987-01-01

    Action spectra were determined for cell killing and mutation by monochromatic ultraviolet and visible radiations (254-434 nm) in cultured human epithelial P3 cells. Cell killing was more efficient following radiation at the shorter wavelengths (254-434 nm) than at longer wavelengths (365-434 nm). At 254 nm, for example, a fluence of 11 Jm-2 gave 37% cell survival, while at 365 nm, 17 X 10(5) Jm-2 gave equivalent survival. At 434 nm little killing was observed with fluences up to 3 X 10(6) Jm-2. Mutant induction, determined at the hypoxanthine-guanine phosphoribosyltransferase locus, was caused by radiation at 254, 313, and 365 nm. There was no mutant induction at 334 nm although this wavelength was highly cytotoxic. Mutagenesis was not induced by 434 nm radiation, either. There was a weak response at 405 nm; the mutant frequencies were only slightly increased above background levels. For the mutagenic wavelengths, log-log plots of the mutation frequency against fluence showed linear regressions with positive slopes of 2.5, consistent with data from a previous study using Escherichia coli. The data points of the action spectra for lethality and mutagenesis were similar to the spectrum for DNA damage at wavelengths shorter than 313 nm, whereas at longer wavelengths the lethality spectrum had a shoulder, and the mutagenesis spectrum had a secondary peak at 365 nm. No correlation was observed for the P3 cells between the spectra for cell killing and mutagenesis caused by wavelengths longer than 313 nm and the induction of DNA breakage or the formation of DNA-to-protein covalent bonds in these cells

  1. Peculiarities of near-ultraviolet (365 nm) and visible light effects in Paramecium Caudatum cells

    International Nuclear Information System (INIS)

    Samoilova, K.A.; Sushchenko, N.B.

    1977-01-01

    After treatment with 365 nm or visible light Paramecium caudatum cells fail to divide and die shortly after irradiation; no death occurs long after irradiation, as well as after several cell cycles, unlike the situation after the action of 254 nm or 300-380 nm. Irradiation inhibits mainly the first cell cycle following which the recovery of cells starts. Thus no after-effects take place after the action of 365 nm and visible light, and the patterns of their effects are rather similar. The photoreactivation of damages induced by 365 nm is quite small, being about 2 times less than that for 254 nm and 300-380 nm. Similarity of the action of 254, 300-380, 365 nm and visible light was established by the stimulation of cell division by low doses and increase in viability of infusoria from cultures with low survival and depressed rate of multiplication. This effect of 365 nm is not eliminated by visible light; moreover, the latter promotes the 'therapeutic' effect of the 365 nm line. (author)

  2. Mutagenic interactions between near-ultraviolet (365 nm) radiation and alkylating agents in Escherichia coli

    International Nuclear Information System (INIS)

    Moraes, E.C. de; Tyrell, R.M.

    1981-01-01

    The mutagenic interaction between near-ultrviolet (365 nm) radiation and the alkylting agents ehtyl methanesulponate (EMS) and methyl methanesulphonate (MMS) was studied in a repair-component and an excision-deficient stram of Escherichia coli. Near-UV raditation modified the metabolic response of of exposure to these chemicals and either reduced or increased their mutagenic efficiency. Based on these results, an experimental model was formulated to explain the mutagenic interactions that occur between near-UV and various agents that induce prototrophic reverants cia error-prone repair of DNA. According to this model, low doses of near-UV provoke conditions for mutation frequency decline (MFI) and lead to a mutagenic antagonism. With increasing near-Uv doses, damage to constitutive error-free repairs system increases, favouring the error-prone system and inhibiting the MFD. Under these conditions there will be a progressive decrease in antagonism until at high doses an enhancement of mutation frequency (positive interaction) will occur. (orig.)

  3. Effects of peroxide and catalase on near ultraviolet radiation sensitivity in Escherichia coli strains

    Energy Technology Data Exchange (ETDEWEB)

    Coombs, A.M.L.; Moss, S.H.

    1987-03-01

    The role of peroxide and catalase on NUV radiation sensitivity was examined in two repair competent E. coli strains, AB1157 and B/r. Exponential phase B/r is considerably more sensitive to NUV radiation than exponential phase AB1157. However, resistance to 5 mmol dm/sup -3/ H/sub 2/O/sub 2/ was induced in both AB1157 and B/r by pretreating growing cells with 30 ..mu..mol dm/sup -3/ H/sub 2/O/sub 2/. Pretreatment also induced resistance to broad-band NUV radiation in these strains. The addition of catalase to the post-irradiation plating medium increased survival to the same extent as that provided by pretreatment with 30 ..mu..mol dm/sup -3/ H/sub 2/O/sub 2/, in both strains. The NUV radiation sensitivity seen in B/r does not appear to be due to a deficiency in enzymes that scavenge H/sub 2/O/sub 2/, as a catalase deficient mutant, E. coli UM1, is more resistant to NUV radiation than B/r. Also, assays for H/sub 2/O/sub 2/ scavenging ability show little difference between AB1157 and B/r in this respect. Two hypotheses are put forward to account for the sensitivity of exponential phase B/r. Whilst it is apparent that peroxides and catalase do have a role in NUV radiation damage, it is clear that other factors also influence survival under certain conditions.

  4. Recovery from damage induced by acridine plus near-ultraviolet light in Escherichia coli

    International Nuclear Information System (INIS)

    Wagner, S.; Feldman, A.; Snipes, W.

    1982-01-01

    Escherichia coli cells treated with sublethal doses of acridine plus near-UV light exhibit an effective split-dose recovery response that requires an incubation period of about 30-45 min. Studies of the metabolic requirements for split-dose recovery revealed the following: (a) DNA synthesis is not required for split-dose recovery: (b) inhibition of electron transport or protein synthesis reduces the efficiency of split-dose recovery by about one-half: (c) inhibition of phospholipid synthesis or cell wall synthesis completely eliminates the split-dose recovery response. These results suggest an involvement of membrane repair mechanisms in response to damage by acridine plus near-UV light. Additional evidence for such a process was provided by more direct assays for membrane recovery. It was found that cells treated with sublethal doses of acridine plus near-UV light are sensitive to low concentrations of detergents, and lose that sensitivity upon incubation. Likewise, treated cells are susceptible to lethal osmotic shock, but can recover from this susceptibility if incubated after treatment but prior to exposure to low osmotic conditions. Based on accumulating evidence it is proposed that E. coli cells are capable of repairing membrane damage resulting from exposure to acridine plus near-UV light. (author)

  5. Cytogenetic effects of near ultraviolet radiation in normal and systemic lupus erythematosus lymphocytes

    International Nuclear Information System (INIS)

    Caporossi, D.; Sebastiani, G.; Nicoletti, B.; Masala, C.

    1990-01-01

    The authors conducted a study on the spontaneous and UV-A induced frequency of chromosomal breaks and sister-chromatid exchanges (SCE) in purified lymphocytes from normal donors and from systemic lupus erythematosus (SLE) patients who were in clinical remission at the time of the study. Our results show that although SLE lymphocytes exhibit a higher frequency of spontaneous SCEs than controls, the rate of chromosomal breakage is comparable in the 2-groups. In both controls and patients, irradiation with UV-A (320-400 nm) increases the SCE values but does not significantly affect the frequency of chromosomal aberrations. (author). 14 refs.; 1 fig.; 3 tabs

  6. Role of near ultraviolet wavelength measurements in the detection and retrieval of absorbing aerosols from space

    Science.gov (United States)

    Mukai, Sonoyo; Fujito, Toshiyuki; Nakata, Makiko; Sano, Itaru

    2017-10-01

    Aerosol remote sensing by ultraviolet (UV) wavelength is established by a Total Ozone Mapping Spectrometer (TOMS) mounted on the long-life satellite Nimbus-7 and continues to make observations using Ozone monitoring instrument (OMI) located on the Aura satellite. For example, TOMS demonstrated that UV radiation (0.331 and 0.360 μm) could easily detect absorbing particles such as mineral dust or smoke aerosols. TOMS-AI (absorbing aerosol index) has been used to identify the absorbing aerosols from space. For an upcoming mission, JAXA/GCOM-C will have the polarization sensor SGLI boarded in December 2017. The SGLI has multi (19)-channels including near UV (0.380 μm) and violet (0.412 μm) wavelengths. This work intends to examine the role of near UV data in the detection of absorbing aerosols similar to TOMS-AI played. In practice, the measurements by GLI mounted on the short Japanese mission JAXA/ADEOS-2, whose data archive period was just 8 months from April to October in 2003, are available for simulation of SGLI data because ADEOS-2/GLI installed near UV and violet channels. First of all, the ratio of data at 0.412 μm to that at 0.380 μm is examined as an indicator to detect absorbing aerosols on a global scale during ADEOS-2 era. It is noted that our research group has developed an efficient algorithm for aerosol retrieval in hazy episodes (dense concentrations of atmospheric aerosols). It can be said that at least this work is an attempt to grasp the biomass burning plumes from the satellite.

  7. Near-ultraviolet Excess in Slowly Accreting T Tauri Stars: Limits Imposed by Chromospheric Emission

    Science.gov (United States)

    Ingleby, Laura; Calvet, Nuria; Bergin, Edwin; Herczeg, Gregory; Brown, Alexander; Alexander, Richard; Edwards, Suzan; Espaillat, Catherine; France, Kevin; Gregory, Scott G.; Hillenbrand, Lynne; Roueff, Evelyne; Valenti, Jeff; Walter, Frederick; Johns-Krull, Christopher; Brown, Joanna; Linsky, Jeffrey; McClure, Melissa; Ardila, David; Abgrall, Hervé; Bethell, Thomas; Hussain, Gaitee; Yang, Hao

    2011-12-01

    Young stars surrounded by disks with very low mass accretion rates are likely in the final stages of inner disk evolution and therefore particularly interesting to study. We present ultraviolet (UV) observations of the ~5-9 Myr old stars RECX-1 and RECX-11, obtained with the Cosmic Origins Spectrograph and Space Telescope Imaging Spectrograph on the Hubble Space Telescope, as well as optical and near-infrared spectroscopic observations. The two stars have similar levels of near-UV emission, although spectroscopic evidence indicates that RECX-11 is accreting and RECX-1 is not. The line profiles of Hα and He I λ10830 in RECX-11 show both broad and narrow redshifted absorption components that vary with time, revealing the complexity of the accretion flows. We show that accretion indicators commonly used to measure mass accretion rates, e.g., U-band excess luminosity or the Ca II triplet line luminosity, are unreliable for low accretors, at least in the middle K spectral range. Using RECX-1 as a template for the intrinsic level of photospheric and chromospheric emission, we determine an upper limit of 3 × 10-10 M ⊙ yr-1 for RECX-11. At this low accretion rate, recent photoevaporation models predict that an inner hole should have developed in the disk. However, the spectral energy distribution of RECX-11 shows fluxes comparable to the median of Taurus in the near-infrared, indicating that substantial dust remains. Fluorescent H2 emission lines formed in the innermost disk are observed in RECX-11, showing that gas is present in the inner disk, along with the dust. This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile.

  8. Atomic emission lines in the near ultraviolet; hydrogen through krypton, section 2

    Science.gov (United States)

    Kelly, R. L.

    1979-01-01

    A compilation of spectra from the first 36 elements was prepared from published literature available through October 1977. In most cases, only those lines which were actually observed in emission or absorption are listed. The wavelengths included range from 2000 Angstroms to 3200 Angstroms with some additional lines up to 3500 Angstroms. Only lines of stripped atoms are reported; no molecular bands are included.

  9. Atomic emission lines in the near ultraviolet; hydrogen through krypton, section 1

    Science.gov (United States)

    Kelly, R. L.

    1979-01-01

    A compilation of spectra from the first 36 elements was prepared from published literature available through October 1977. In most cases, only those lines which were actually observed in emission or absorption are listed. The wavelengths included range from 2000 Angstroms to 3200 Angstroms with some additional lines up to 3500 Angstroms. Only lines of stripped atoms are reported; no molecular bands are included.

  10. Effects of peroxide and catalase on near ultraviolet radiation sensitivity in Escherichia coli strains

    International Nuclear Information System (INIS)

    Coombs, A.M.L.; Moss, S.H.

    1987-01-01

    The role of peroxide and catalase on NUV radiation sensitivity was examined in two repair competent E. coli strains, AB1157 and B/r. Exponential phase B/r is considerably more sensitive to NUV radiation than exponential phase AB1157. However, resistance to 5 mmol dm -3 H 2 O 2 was induced in both AB1157 and B/r by pretreating growing cells with 30 μmol dm -3 H 2 O 2 . Pretreatment also induced resistance to broad-band NUV radiation in these strains. The addition of catalase to the post-irradiation plating medium increased survival to the same extent as that provided by pretreatment with 30 μmol dm -3 H 2 O 2 , in both strains. The NUV radiation sensitivity seen in B/r does not appear to be due to a deficiency in enzymes that scavenge H 2 O 2 , as a catalase deficient mutant, E. coli UM1, is more resistant to NUV radiation than B/r. Also, assays for H 2 O 2 scavenging ability show little difference between AB1157 and B/r in this respect. Two hypotheses are put forward to account for the sensitivity of exponential phase B/r. Whilst it is apparent that peroxides and catalase do have a role in NUV radiation damage, it is clear that other factors also influence survival under certain conditions. (author)

  11. Analysis of UV-excited fluorochromes by flow cytometry using near-ultraviolet laser diodes.

    Science.gov (United States)

    Telford, William G

    2004-09-01

    Violet laser diodes have become common and reliable laser sources for benchtop flow cytometers. While these lasers are very useful for a variety of violet and some ultraviolet-excited fluorochromes (e.g., DAPI), they do not efficiently excite most UV-stimulated probes. In this study, the next generation of InGaN near-UV laser diodes (NUVLDs) emitting in the 370-375-nm range have been evaluated as laser sources for cuvette-based flow cytometers. Several NUVLDs, ranging in wavelength from 370 to 374 nm and in power level from 1.5 to 10 mW, were mounted on a BD Biosciences LSR II and evaluated for their ability to excite cells labeled with the UV DNA binding dye DAPI, several UV phenotyping fluorochromes (including Alexa Fluor 350, Marina Blue, and quantum dots), and the fluorescent calcium chelator indo-1. NUVLDs at the 8-10-mW power range gave detection sensitivity levels comparable to more powerful solid-state and ion laser sources, using low-fluorescence microsphere beads as measurement standards. NUVLDs at all tested power levels allowed extremely high-resolution DAPI cell cycle analysis, and sources in the 8-10-mW power range excited Alexa Fluor 350, Marina Blue, and a variety of quantum dots at virtually the same signal-to-noise ratios as more powerful UV sources. These evaluations indicate that near-UV laser diodes installed on a cuvette-based flow cytometer performed nearly as well as more powerful solid-state UV lasers on the same instrumentation, and comparably to more powerful ion lasers on a jet-in-air system, and. Despite their limited power, integration of these small and inexpensive lasers into benchtop flow cytometers should allow the use of flow cytometric applications requiring UV excitation on a wide variety of instruments. Copyright 2004 Wiley-Liss, Inc.

  12. Effect of low fluencies of near-ultraviolet radiation on Bacteroides fragilis survival

    International Nuclear Information System (INIS)

    Slade, H.J.K.; Jones, D.T.; Woods, D.R.

    1982-01-01

    Bacteroides fragilis is a convenient obligate anaerobe for an investigation on the effect of near-UV irradiation since the authors have shown that it can be maintained in aerobic solutions for at least 6 h without loss in viability. Furthermore, they recently demonstrated that B. fragilis differs from other bacteria in that it is more sensitive to far-UV (254 nm) radiation in the presence of oxygen. The role of oxygen on near-UV survival in B. fragilis, was investigated. The effect of chloramphenicol was also studied. Survival curves are presented. B. fragilis Bf-2 cells irradiated with increasing fluencies of near-UV light under anaerobic conditions showed no loss in viability. A 'V'-shaped survival curve was obtained when cells were irradiated aerobically. After the initial reduction in viability with fluencies up to 1.5 kJ/m 2 further irradiation resulted in the recovery of colony-forming ability which was maximal at 2.6 kJ/m 2 and remained at this level up to fluencies of 4 kJ/m 2 . (Auth.)

  13. Near ultraviolet radiation (280-400 nm): Direct and indirect effects on microbial pathogens

    International Nuclear Information System (INIS)

    Asthana, A.

    1993-01-01

    Responses of pigmented pathogenic fungi and E. coli strains differing in DNA repair and catalase proficiency to direct and indirect effects of ultraviolet radiation were evaluated. Pigments in the four fungal pathogens of Citrus differed in their ability to protect against direct UV and damage by UV-A -mediated phototoxins of both host and non-host origin. UV-A and UV-B did not inactivate the fungal species. Differential protection in wild type strains of the two Fusarium spp. and in the wild type strains of the two Penicilium spp. against UV-C was observed. Wild type and mutants with altered coloration in Penicilium spp. protected to varying extent against both α-T and 8-MOP in the presence of UV-A. UV-B irradiation of E. coli resulted in inactivation of strains deficient in DNA excision repair. Plasmid DNA damaged in vitro by UV-B from lamp systems as well as by sunlight, and transformed in vivo into bacterial cells lacking specific nucleases showed reduced transformation in DNA excision repair strains. UV-B enriched wavelengths isolated from a solar simulator affected plasmid DNA in a similar manner as UV-B from lamp systems. Sunlight, however affected the membrane of whole cells. Concentration of foliar furanocoumarins of Citrus jambhiri decreased with UV-B irradiation. Phototoxicity to Fusarium spp. was accounted for, in part, by furanocoumarins, psoralen and bergapten (5-MOP) and others. Pure psoralen and 5-MOP affected both Fusarium spp. similarly and carotenoids protected only partially in the wild type strains. Citrus targetted the cell membrane in Fusarium spp.l and in E. coli strains; carotenoids in both of which protected against such damage. Loss in structural integrity of plasmid DNA when treated with citral and UV-A correlated with loss in transforming activity. Biological damage to membrane and DNA was due to the production of hydrogen peroxide. Fruit-rot pathogens Penicilium spp. were not affected by either furanocoumarins or citrals

  14. In vivo photoinactivation of Escherichia coli ribonucleoside reductase by near-ultraviolet light

    Energy Technology Data Exchange (ETDEWEB)

    Peters, J [California Univ., Irvine (USA)

    1977-06-09

    Some experimental work is described showing that near-uv irradiation of E.coli cells selectively destroys RDP-reductase (ribonucleoside diphosphate reductase) activity in vivo are providing evidence relating the loss of RDP-reductase to loss of cellular visibility and the inactivity of irrdiated cells to support the replication of DNA phages. The data are consistent with the interpretation that the principal cause in the killing of exponentially growing E.coli cells by near-uv, and the loss of ability of irradiated host cells to support the replication of DNA phages, is the photoinactivation of the RDP-reductase complex.

  15. Condicionantes institucionales que influyen en la utilización del examen clínico de mama Institutional factors contributing to the utilization of breast clinical examination

    Directory of Open Access Journals (Sweden)

    Ofelia Poblano-Verástegui

    2004-08-01

    Full Text Available OBJETIVO: Identificar los condicionantes de la utilización del examen clínico de mama, la relación entre ellos y el ejercicio médico institucional. MATERIAL Y MÉTODOS: Entre 1996 y 1997 se hizo un estudio cualitativo en unidades médicas del Instituto Mexicano del Seguro Social y de la Secretaría de Salud. Se realizaron ocho grupos focales: cuatro con mujeres usuarias y cuatro con profesionales de la salud. Participaron 47 usuarias y 29 médicos y enfermeras. La información se interpretó con base en la capacidad de respuesta organizacional a las expectativas de la usuaria, el poder/saber en la organización y el ejercicio médico institucional, a la luz de la Teoría Fundamentada. RESULTADOS: La demanda estuvo condicionada por la percepción de mala calidad de la atención, falta de confianza en el médico y aspectos organizacionales. En la oferta, los médicos varones mostraron desinterés y temor a realizar el examen. Las médicas parecieron interesadas y las usuarias las aceptaron. CONCLUSIONES: Existen barreras psicológicas, culturales, sociales e institucionales en el acceso y utilización del examen clínico de mama. La identificación de estas barreras y su origen pueden apoyar el desarrollo de acciones para mejorar la relación médico-paciente.OBJECTIVE:To identify factors associated with utilization of breast clinical examination (BCE and their relationship with institutional medical practice. MATERIAL AND METHODS: This is a qualitative study conducted between 1996 and 1997 in medical units of Instituto Mexicano del Seguro Social (Mexican Institute of Social Security and Secretaría de Salud (Ministry of Health. Eight focus groups were included: four groups of female users and four groups of health professionals; in total, 47 users and 29 physicians and nurses participated. Interpretations of information were based on the organizational ability to respond to the user's expectations, "ability/knowledge" within the organization

  16. Mastopexia con prótesis: técnica triplanar con colgajo en cola de pez para mamas con pobre calidad de cobertura

    Directory of Open Access Journals (Sweden)

    M. Berrocal-Revueltas

    2013-12-01

    Full Text Available La mastopexia con implantes de silicona, es uno de los procedimientos más frecuentes en la práctica diaria en Cirugía Plástica. Sin embargo, la pobre calidad de la cobertura de las mamas, relacionada con piel estriada, escaso tejido subcutáneo y pérdida del parénquima mamario secundarios a la lactancia prolongada y a la pérdida masiva de peso, son causa del incremento progresivo de resultados insatisfactorios a medio y largo plazo que han sido evaluados, analizados y discutidos por los especialistas. Los resultados insatisfactorios más frecuentes en mastopexia con implantes en posición retromuscular son: doble contorno mamario, asimetrías y desplazamiento de los implantes. Los objetivos del presente estudio son: describir el nuevo método triplanar como alternativa útil para lograr mejores resultados en pacientes con mala calidad de cobertura y analizar los resultados obtenidos con el mismo. Realizamos un estudio observacional, descriptivo, prospectivo, en un grupo de 268 pacientes con diagnóstico de ptosis mamaria con hipotrofia y mala calidad de cobertura por piel estriada, escaso tejido celular subcutáneo y pérdida del parénquima mamario, secundarios a lactancia prolongada y pérdida masiva de peso, entre otros, a las que se les practicó mamoplastia de aumento con implantes de silicona mediante la aplicación del método triplanar descrito por la autora, entre enero del 2004 y enero del 2013 en el Hospital de Bocagrande de Cartagena, Colombia. El diseño de la técnica se basa en los principios de cicatriz vertical descrita por Lassus o Lejour o mediante cicatriz en "J", descrita por la autora. El método triplanar se basa en tres planos de cobertura del implante. Plano I: submuscular, para cubrir los dos tercios superiores del implante. Plano II: colgajo dermoglandular con dos prolongaciones distales triangulares de tejido adiposo, en forma de pez, para cubrir el tercio inferior del implante y el borde libre del m

  17. Fatores associados ao linfedema em pacientes com câncer de mama Associated factors of lymphedema in breast cancer patients

    Directory of Open Access Journals (Sweden)

    Daniella Marta Ferreira de Paiva

    2011-02-01

    Full Text Available OBJETIVO: determinar a prevalência e os fatores associados ao linfedema em pacientes com câncer de mama. MÉTODOS: este estudo de corte transversal incluiu 250 mulheres com mais de seis meses de tratamento para o câncer de mama, que compareceram ao Ambulatório de Mastologia e Oncologia para consulta de seguimento em um Centro de Referência em Oncologia, em Juiz de Fora, Minas Gerais. Elas foram entrevistadas e submetidas à avaliação física. Foram colhidos dados de prontuário relacionados ao tratamento da neoplasia, à intervenção axilar e ao tumor. Diagnosticou-se linfedema quando a diferença entre os membros superiores foi maior ou igual a 2 cm pela perimetria. Os grupos de mulheres com e sem linfedema foram comparados em relação aos possíveis fatores de risco, e as medidas de tendência central, dispersão e prevalência foram obtidas admitindo o nível de significância de 95%. RESULTADOS: Cento e doze mulheres (44,8% apresentaram linfedema. Foi encontrada diferença significativa entre os grupos de mulheres com e sem linfedema em relação à mediana de linfonodos retirados (p=0,02; apresentação de trombose linfática superficial no braço homolateral à cirurgia (pPURPOSE: to determine the prevalence of lymphedema and its associated factors in breast cancer patients. METHODS: Two hundred and fifty women that had undergone more than six months of breast cancer treatment and were being treated at an oncology reference hospital in Juiz de Fora, Minas Gerais, Brazil. They were interviewed and submitted to physical evaluation. Data from the patients' medical records regarding the treatment of breast cancer, the extent of axillary intervention and the tumor were analyzed. Lymphedema was diagnosed when the difference between both upper limbs was 2 cm or more by perimetry. The groups of women with and without lymphedema were compared regarding the possible risk factors, and central tendency, dispersion, and prevalence were

  18. Câncer de mama na gravidez e quimioterapia: revisão sistemática Breast cancer during pregnancy and chemotherapy: a systematic review

    Directory of Open Access Journals (Sweden)

    Denise Leite Maia Monteiro

    2013-04-01

    Full Text Available O objetivo do estudo é estabelecer a segurança do uso da quimioterapia na gestante portadora de câncer de mama e verificar as possíveis intercorrências no feto. Para identificação de publicações foi realizada pesquisa bibliográfica nas bases de dados: MEDLINE/PubMed, LILACS, SciELO, Cochrane, Uptodate e Google acadêmico. A busca totalizou 86 artigos publicados de 2001 a 2012, que foram avaliados por dois revisores obedecendo aos critérios de exclusão e inclusão pré-estabelecidos, sendo selecionados 39 artigos para a elaboração deste estudo. Todos os quimioterápicos utilizados no tratamento do câncer de mama na gravidez pertencem à categoria D, consistindo no uso de 5-fluorouracil (F, doxorrubicina (A ou epirrubicina (E e ciclofosfamida (C ou na combinação de doxorrubicina e ciclofosfamida (AC, método seguro quando utilizado após o primeiro trimestre da gestação. Poucos estudos avaliaram o uso de taxanos (T como docetaxel (D e paclitaxel (P, não sendo demonstrado aumento da ocorrência de malformações fetais e outras complicações maternas quando utilizados no segundo e terceiro trimestres da gestação. O uso do trastuzumabe em gestantes encontra-se associado à oligodramnia e adramnia, não sendo recomendado na gravidez. Em função da quase totalidade dos estudos serem observacionais e retrospectivos, torna-se necessário a confecção de novos estudos prospectivos sobre o tema.This study aimed to establish the safety of chemotherapy use in pregnant women with breast cancer, and to find possible effects in the fetus. A search of MEDLINE/PubMed, LILACS, SciELO, Cochrane, UpToDate, and Google Scholar databases was performed to identify publications, 86 articles published from 2001 to 2012 were retrieved and evaluated by two readers in accordance predetermined exclusion and inclusion criteria; 39 articles were selected. All the chemotherapy drugs used to treat breast cancer during pregnancy belonged to class D, and

  19. Linfadenectomia Axilar Conservadora no Câncer de Mama Estádio Clínico I Conservative Axillary Dissection in Stage I Breast Cancer

    Directory of Open Access Journals (Sweden)

    Luiz Antonio Guimarães Brondi

    2000-01-01

    Full Text Available Objetivo: determinar a eficácia da linfadenectomia axilar conservadora (esvaziamento dos níveis I e II no tratamento cirúrgico do câncer da mama estádio I. Métodos: foram avaliados os resultados de 142 cirurgias realizadas em pacientes portadoras de câncer mamário estádio I (T1NO entre janeiro/93 e dezembro/98. Removidos os linfonodos axilares presentes nos níveis I e II com preservação dos músculos peitorais, os mesmos foram dissecados pelo próprio autor (LAGB, sendo posteriormente examinados histopatologicamente com a realização de apenas 1 corte por linfonodo. A quadrantectomia foi realizada em 138 casos e a mastectomia modificada segundo Patey em 4 casos. Houve predomínio dos casos T1c (130 casos. Resultados: foram removidos 3.282 linfonodos (2.456 presentes no nível I e 826 no nível II com um número médio de 23,1 linfonodos por axila. Desse total, apenas 68 estavam comprometidos (2,1%. Skip metastasis estava presente em apenas um caso (0,7%. Foram observados 35 casos de falso-negativos clínicos (24,6%, estando o nível I comprometido em 34 casos (97,1% e o nível II em apenas 2 casos (5,7%. A axila estava negativa nos 107 casos restantes (75,4%. Conclusão: a dissecção axilar dos níveis I e II é suficiente para tratar a axila no estádio I do câncer de mama. Se linfonodos suspeitos são identificados durante a cirurgia, os gânglios do nível III e o grupo interpeitoral de Rotter deverão ser retirados.Purpose: to evaluate the efficacy of conservative axillary dissection (levels I and II in the surgical treatment of stage I breast cancer. Methods: the results of 142 mastectomies performed from January/93 to December/98 in patients with clinical stage I breast cancer (T1NO were evaluated. Removing the axillary lymph nodes present at levels I and II, with the preservation of the pectoralis muscles, the axillary lymph nodes were dissected by the author (LAGB, and subsequently one section of each lymph node was

  20. Síndrome da mama fantasma: características clínicas e epidemiológicas Phantom breast syndrome: clinical and epidemiological characteristics

    Directory of Open Access Journals (Sweden)

    Benedito Borges da Silva

    2007-09-01

    Full Text Available OBJETIVO: avaliar as características clínicas e epidemiológicas de pacientes com o diagnóstico de síndrome da mama fantasma (SdMF ou com fenômenos fantasmas isoladamente. MÉTODOS: realizou-se um estudo observacional descritivo do tipo transversal, envolvendo 98 pacientes tratadas por câncer de mama no Hospital São Marcos, em Teresina (PI, empregando um questionário padronizado. RESULTADOS: observou-se SdMF em 11,2% das pacientes e sensação fantasma isolada em 30% das pacientes. A média de idade foi 54 anos. Cinqüenta e nove pacientes eram casadas (60% e 79,6% eram analfabetas ou não haviam concluído o ensino médio. Alterações emocionais estavam presentes em 67,4%, embora em 66,7% a libido não tenha mudado após o procedimento cirúrgico. Como fator de melhora da dor fantasma, o repouso foi citado por 90,9% das pacientes, enquanto esforços físicos foram mencionados como fator de exacerbação dos sintomas em 63,6% dos casos. A média da nota atribuída à dor em escala de 0 a 10 foi 3, variando de 1 a 7. Apenas 3% das pacientes sabiam da existência desta síndrome antes da realização das entrevistas. CONCLUSÕES: fenômenos fantasmas são freqüentes em pacientes mastectomizadas, havendo necessidade de mais estudos para que se conheçam melhor suas características e o impacto sobre a qualidade de vida dessas mulheres.PURPOSE: to evaluate the clinical and epidemiological characteristics of patients with the diagnosis of phantom breast syndrome or with phantom phenomena lonely. METHODS: it was conducted an observational, descriptive and sectional study enrolling 98 patients treated for breast cancer at Hospital São Marcos, Teresina (PI, Brazil. A standardized questionnaire was applied. RESULTS: the phantom breast syndrome was observed in 11.2% of the patients and phantom sensation alone was observed in 30% of the patients. The mean age of the patients was 54 years. Fifty-nine patients were married (60% and 79.5% were

  1. Expressão citofotométrica quantitativa da CASPASE-3 e do CD-34 no carcinoma ductal infiltrante de mama

    Directory of Open Access Journals (Sweden)

    Fábio Santana dos Passos

    Full Text Available OBJETIVO: Descrever, correlacionar e comparar a expressão dos marcadores tumorais CD-34 (angiogênese e caspase-3 (apoptose em carcinoma ductal invasor de mama. MÉTODOS: Foram utilizados 22 casos de adenocarcinoma infiltrante de mama provenientes de blocos de parafina e, após preparo específico para imunoistoquímica, 15 apresentaram leitura satisfatória e foram avaliados pelo sistema de fotocitometria de imagem SAMBA 4000® e software IMMUNO®. Os parâmetros analisados foram o índice de marcagem e densidade óptica. RESULTADOS: Para o CD-34 não houve normalidade dos dados na análise do índice de marcagem, com obtenção de P=0,019, havendo normalidade para a análise da densidade óptica, com P=0,199. Para a caspase-3 houve normalidade de dados para o índice marcagem com P=0,306 e para a densidade óptica com P=0,114; não houve diferença estatística significativa entre eles em relação à média do índice de marcagem (P=0,872 e da densidade óptica (P=0,816, quando analisados os parâmetros que definem a expressão dos marcadores; existiu tendência à associação entre a densidade óptica e o índice de marcagem do marcador tumoral caspase-3, com P=0,025. Não foi observada tendência à associação quando comparados densidade óptica e índice de marcagem do marcador tumoral CD-34; índice de marcagem do marcador tumoral caspase-3 e índice de marcagem do marcador tumoral CD-34; e densidade óptica da caspase-3 com a do CD-34. CONCLUSÃO: Dos 22 casos incluídos foi possível verificar a expressão do marcador CD-34 em 18 lâminas e da caspase-3 em 22 lâminas; Para o CD-34 não houve normalidade dos dados na análise do índice de marcagem, havendo sim normalidade para a análise da densidade óptica. Para a caspase-3 houve normalidade de dados tanto para o índice de marcagem como para a densidade óptica. Existe tendência à associação entre a densidade óptica e o índice de marcagem da caspase-3. Não foi observada

  2. Tendencias de la mortalidad por cáncer de mama en México, 1980-2009 Breast cancer mortality trends in Mexico, 1980-2009

    Directory of Open Access Journals (Sweden)

    Elvia de la Vara-Salazar

    2011-10-01

    Full Text Available El cáncer de mama ha trascendido como un importante riesgo para la salud de las mujeres a escala mundial. Las muertes por cáncer de mama han tenido un destacado incremento dentro de los tumores malignos a nivel mundial al cobrar más de 460 000 vidas en 2008, convirtiéndolo en el padecimiento con más decesos alrededor del mundo.Los cambios demográficos y en estilos de vida han modificado la exposición de la población al riesgo de enfermedades como el cáncer,y desde 1980la mortalidad porcáncerdemama ha mantenido una tendencia ascendente,ubicándose por encima de las muertes por cáncer cervicouterino desde 2006. Al analizar las tasas de mortalidad en las mujeres mexicanas de 25 años de edad en adelante a lo largo de 30 años, se distinguen diferencias estatales y por grupos de edad. Aun cuando el perfil de esta causa de muerte se ha asociado con un mayor desarrollo regional, en este trabajo se puede observar que están ocurriendo cambios y las muertes también están creciendo en la población de mujeres de regiones y entidades menos desarrolladas.Queda de manifiesto el reto que México enfrenta, y la necesidad de conjuntar esfuerzos e implementar programas para educar a la población hacia el autocuidado de la salud, así como promover estilos de vida saludables, además de mejorar la infraestructura diagnóstica para lograr una detección a tiempo y garantizar un tratamiento adecuado.Breast cancer has become an important health risk for women worldwide.The important growth of breast cancer-related deaths within those caused by malign tumors throughout the globe went past the 460 000 in 2008,becoming the deadliest disease worldwide.Demographic changes and lifestyles have modified the population exposure to risk factors of maladies such as cancer, and since 1980 breast cancer mortality has remained on an upward tendency,surpassing cervical cancer in 2006. After analyzing mortality rates along 30 years in Mexican women 25 or more years

  3. El reto de la valoración de la calidad de vida en mujeres con cáncer de mama

    Directory of Open Access Journals (Sweden)

    Carolina Salas Zapata

    2010-01-01

    Full Text Available Este artículo brinda una síntesis del estado del arte relacionado con la valoración de la calidad de vida de la mujer diagnosticada con cáncer de mama y describe los elementos que se han incorporado en dicha valoración. Este tema es de gran relevancia debido a los cambios que se vienen implementando en los modelos de atención, especialmente de las personas con enfermedades crónicas. Se realizó una búsqueda narrativa de artículos científicos en bases de datos indizadas, revistas y textos. Se observó que la mayoría de los autores parten de las definiciones de calidad de vida, cuyo eje conceptual es la multidimensionalidad del constructo y la percepción individual de la paciente. Dicha valoración constituye un reto debido a las limitaciones de los instrumentos que existen para tal efecto y la complejidad para captar lo que sienten y piensan las pacientes después del diagnóstico. Además, existe un dilema en términos epistemológicos, al querer valorar algo subjetivo (que por naturaleza no es cuantificable pero que es necesaria su valoración para analizar los cambios en la atención en salud. Se concluye que en la última década ha habido un fortalecimiento importante relacionado con la atención biopsicosocial del paciente oncológico, trascendiendo lo netamente funcional. Las redes de apoyo social son un elemento fundamental en la calidad de vida de estos pacientes. Los sistemas de salud deben garantizarles una atención integral, enfocada hacia el diagnóstico y tratamiento oportuno, y el mejoramiento continuo de su calidad de vida.

  4. Pesquisa masiva de cáncer de mama con un equipo móvil de mamografía

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    Benjamín Berdión Martínez

    1997-10-01

    Full Text Available Se presenta un informe preliminar sobre los resultados obtenidos con la aplicación del Programa de Detección Preclínica del Cáncer Mamario en un área de salud del distrito No.4 del municipio Santiago de Cuba, cubierta con el subsistema del médico y la enfermera de la familia. La exploración de las mamas mediante un equipo móvil de mamografía permitió examinar a la mayor parte de las mujeres con riesgo, de las cuales el 79,4 % no presentaban afección alguna en dicha localización. Entre las causas de no realización de la prueba predominaron: negación, invalidez y hallarse fuera del área en el momento del examen, pero se ha seguido insistiendo para lograr el cumplimiento de ese objetivo.A preliminary report on the results obtained with the application on the Program for Clinical Detection pof Breast Cancer in the district No. 4 of the municipality of Santiago de Cuba, covered by the subsystem of the family physician and nurse, is presented. The breast screening by a mobile mammography unit allowed to examine most of the women at risk, from whom 79.4 % had no affection. Refusal, disability, and being out of the area at the time of the examination were of the reasons nor to do the test. Anyway, the health authorities keep on insisting to accomplish this objective.

  5. Anestesia peridural torácica para cirurgia plástica de mama em paciente portadora de miastenia gravis: relato de caso Anestesia peridural torácica para cirugía plástica de mama en paciente portadora de miastenia gravis: relato de caso Thoracic epidural anesthesia for mammaplasty in myasthenia gravis patient: case report

    Directory of Open Access Journals (Sweden)

    Fabiano Timbó Barbosa

    2005-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A miastenia gravis é uma doença crônica, auto-imune, caracterizada pela fraqueza da musculatura esquelética em decorrência da diminuição dos receptores de acetilcolina na junção neuromuscular. O objetivo deste relato é mostrar um caso de paciente com miastenia gravis submetida a anestesia peridural torácica para cirurgia plástica de mama. RELATO DO CASO: Paciente com 51 anos, portadora de miastenia gravis foi submetida a anestesia peridural torácica com bupivacaína e fentanil. Não houve sinais de depressão respiratória. A paciente recebeu alta hospitalar após 36 horas. CONCLUSÕES: O presente caso sugere como conduta anestésica para o paciente portador de miastenia gravis a anestesia peridural como técnica única, sem a obrigatoriedade de intubação orotraqueal.JUSTIFICATIVA Y OBJETIVOS: La miastenia gravis es una enfermedad crónica, auto-inmune, caracterizada por la debilidad de la musculatura esquelética resultante de la disminución de los receptores de acetilcolina en la unión neuromuscular. El objetivo de este relato es mostrar el caso de una paciente con miastenia gravis sometida a anestesia peridural torácica para una cirugía plástica de mama. RELATO DEL CASO: Paciente del sexo femenino, 51 años, portadora de miastenia gravis fue sometida a anestesia peridural torácica con bupivacaína y fentanil. No hubo señales de depresión respiratoria. La paciente recibió alta hospitalaria después de 36 horas. CONCLUSIONES: Este actual caso sugiere como conducta anestésica para el paciente portador de miastenia gravis la anestesia peridural como única técnica, sin la obligatoriedad de intubación orotraqueal.BACKGROUND AND OBJECTIVES: Myasthenia gravis is a chronic autoimmune disease characterized by skeletal muscles weakness promoted by decreased acetylcholine receptors in the neuromuscular junction. This report aimed at describing a case of myasthenia gravis patient submitted to thoracic

  6. Breast cancer, poverty and mental health: emotional response to the disease in women from popular classes Cáncer de mama, pobreza y salud mental: respuesta emocional a la enfermedad en mujeres de camadas populares Câncer de mama, pobreza e saúde mental: resposta emocional à doença em mulheres de camadas populares

    Directory of Open Access Journals (Sweden)

    Rodrigo Sanches Peres

    2007-10-01

    Full Text Available This study aimed to analyze the emotional response of a low-income group of women to the breast cancer. The sample was composed by 15 patients from a mastectomized women's support entity. Data were collected through individual face-to-face semi-structured interview. The results were appraised according to a classification system that postulates the existence of four categories mutually excluding: denial, stoicism, affliction and confrontation. The results obtained indicate that stoicism was the more frequent emotional response in the evaluated group. The scientific literature shows that stoicism can contribute to the temporary reduction of stress, but it gradually leads to a uselessness feeling which tends to make difficult the psychosocial adjustment to the disease and its treatment.El presente trabajo tiene como objetivo analizar las reacciones emocionales al cáncer de mama en un grupo de mujeres de clases populares. La muestra fue compuesta por 15 pacientes de una entidad de apoyo a las mujeres mastectomizadas. Datos obtenidos con una entrevista semi-estructurada se apreciaron de acuerdo con un sistema de clasificación que postula la existencia de cuatro categorías que se excluyen mutuamente: rechazo, estoicismo, aflicción y confrontación. Los resultados indican que el estoicismo fue la reacción emocional más frecuente en el grupo evaluado. La literatura científica muestra que el estoicismo puede contribuir a la reducción temporal del stress, pero que lleva gradualmente a un sentimiento de inutilidad qué tiende a crear dificultades para el ajustamiento psico-social a la enfermedad y el tratamiento.O objetivo do estudo foi analisar as reações emocionais ao câncer de mama em um grupo de mulheres de camadas populares. A amostra foi composta por 15 pacientes vinculadas a uma entidade assistencial de apoio a mastectomizadas. Os dados foram coletados mediante o emprego de roteiro semi-estruturado de entrevista individual e apreciados

  7. A influência dos fatores de risco nutricionais no desenvolvimento de câncer de mama em pacientes ambulatoriais do interior do Rio Grande do Sul, Brasil = The influence of nutritional risk factors in the development of breast cancer in outpatients from the countryside of Rio Grande do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Kolling, Fabiana Luiza

    2009-01-01

    Conclusões: os resultados do estudo mostram que quanto maior o índice de massa corporal e o percentual de lipídios consumidos, maior foi a chance de desenvolver câncer de mama, enquanto o maior número de filhos representou fator de proteção para o desenvolvimento da doença

  8. EFECTOS PSÍQUICOS DE LA MASTECTOMÍA (PREVENTIVA Y TERAPÉUTICA. CAMBIOS EN LA PERCEPCIÓN DE LAS MUJERES CON CÁNCER DE MAMA

    Directory of Open Access Journals (Sweden)

    Teresa Sánchez Sánchez

    2015-01-01

    Full Text Available ¿Qué sentido puede tener escribir un trabajo más -dada la abundante literatura específica sobre ello-, que analice las consecuencias de la mastectomía en mujeres que o bien han sido diagnosticadas previamente de un cáncer de mama o bien tienen un fundado temor genético a desarrollarlo en un futuro indeterminado a tenor de los antecedentes familiares que poseen? Repasaremos algunos trabajos destacados sobre el impacto en el psiquismo de la mastectomía (sea ésta como forma de prevención secundaria frente al cáncer o sea profiláctica en comparación con la llamada “cirugía conservadora” (lumpectomía, tumorectomía, a fin de valorar el consenso o el disenso entre los investigadores. Nuestra hipótesis de trabajo es que se ha producido en las pacientes con cáncer de mama un cambio de tendencia en su perspectiva de la mastectomía coincidente con el cambio de siglo (y milenio, tal vez debido a la generalización de la cirugía reconstructiva mamaria tras la resección, lo que mitiga el alcance traumático (imaginario, simbólico y físico de la amputación sin reconstrucción.

  9. ESTUDIOS DE PATOLOGÍA MOLECULAR UTILIZADOS PARA EVALUAR LA AMPLIFICACIÓN DEL ONCOGÉN HER2 EN CÁNCER DE MAMA. OPINIÓN CLÍNICA

    Directory of Open Access Journals (Sweden)

    Luz Fernanda Sua

    2014-12-01

    Full Text Available La importancia en la detección de la amplificación de oncogén HER2, es esencial en el cáncer de mama puesto que estas pacientes no responden a los tratamientos de quimioterapia y hormonales convencionales, traduciéndose así en una menor sobrevida. La determinación del oncogén HER2 tiene un papel crucial como diana terapéutica del trastuzumab. A continuación describiremos estas metodologías las cuales son: la técnica de hibridación in situ fluorescente (FISH, la hibridación in situ cromogénica (CISH y la técnica hibridación in situ cromogénica y con plata (Dual ISH, métodos usados para el estudio del oncogén HER2, en la selección correcta de las pacientes con cáncer de mama que son candidatas a recibir trastuzumab, teniendo una gran utilidad e impacto clínico. Palabras clave: Amplificación HER2, Hibridación in situ fluorescente (FISH, Hibridación in situ cromogénica (CISH e Hibridación in situ cromogénica y con plata (DISH.

  10. Linfoma no Hodgkin primario de mama, revisión de la literatura y presentación de un caso Primary non-Hodgkin breast lymphoma, literature review and a case a presentation

    Directory of Open Access Journals (Sweden)

    Caridad Verdecia Cañizares

    2011-06-01

    Full Text Available El linfoma no Hodgkin primario de la mama es una entidad poco frecuente en pediatría y representa el 0,4 al 0,5 % de todos los tumores mamarios malignos. Debido a que carecen de características propias, tanto clínicas, citológicas como ecográficas, resulta muy difícil establecer el diagnóstico preoperatorio. Se presenta el caso de un linfoma no Hodgkin primario de la mama en una paciente de 3 años que llegó en estadio avanzado de la enfermedad, y se subraya la importancia del tratamiento en un equipo multidisciplinario.The primary non-Hodgkin breast lymphoma is a not frequent entity in children and account for the 0,4 to 0,5% of the malignant breast tumors. Due to they lack of own clinical, cytological and echography features, it is very difficult to made the preoperative diagnosis. This is the case of a primary non-Hodgkin breast lymphoma in a patient aged 3 with an advanced stage of disease, emphasizing the significance of treatment in a multidisciplinary staff.

  11. Progress in atomic spectroscopy

    International Nuclear Information System (INIS)

    Beyer, H.J.; Kleinpoppen, H.

    1984-01-01

    This book presents reviews by leading experts in the field covering areas of research at the forefront of atomic spectroscopy. Topics considered include the k ordering of atomic structure, multiconfiguration Hartree-Fock calculations for complex atoms, new methods in high-resolution laser spectroscopy, resonance ionization spectroscopy (inert atom detection), trapped ion spectroscopy, high-magnetic-field atomic physics, the effects of magnetic and electric fields on highly excited atoms, x rays from superheavy collision systems, recoil ion spectroscopy with heavy ions, investigations of superheavy quasi-atoms via spectroscopy of electron rays and positrons, impact ionization by fast projectiles, and amplitudes and state parameters from ion- and atom-atom excitation processes

  12. Estudo experimental de linfonodo sentinela na mama da cadela com azul patente e Tecnécio Tc99m Experimental study of the sentinel lymph node in the dog breast using blue dye and technetium Tc99m

    Directory of Open Access Journals (Sweden)

    Luiz Gonzaga Porto Pinheiro

    2003-12-01

    Full Text Available Pesquisa do Linfonodo Sentinela (LS tem se mostrado efetiva na avaliação axilar nas portadoras de neoplasia mamária. O LS negativo torna desnecessário o esvaziamento axilar. OBJETIVO: Identificar o LS da região subareolar da mama em cadelas utilizando corante azul patente (AP, Tecnécio Tc99m ou a associação de ambas as técnicas e compará-las quanto à sensibilidade na detecção do linfonodo sentinela. MÉTODOS: Foram estudadas dezessete cães fêmeas. Um total de 55 mamas foram analisadas. Utilizou-se AP (2,5%/0,5 ml e/ou Tc99m (1,0 mC/0,8ml para identificação do LS. A aplicação do Tc99m era realizada duas horas antes da realização do experimento. O AP era injetado na região subareolar da mama. Localizado o LS, realizava-se sua exérese. RESULTADOS: Dos 44 linfonodos em que se utilizou AP, pôde-se verificar que 40 estavam corados (90,90%. Dos 48 linfonodos em que se utilizou Tc99m, 47 linfonodos estavam radioativos (97,91% (p=0.18; k= - 0.067. Nas 37 mamas em que se associou AP ao Tc99m, apesar de 02 linfonodos não estarem corados, todos estavam radioativos (AP vs AP+Tc: p=0.12; k=0.083; Tc vs AP+Tc: p=1.0; k=0.018. CONCLUSÃO: O Tc99m e o corante azul patente, isolados ou associados, prestam-se à identificação do LS da mama do animal.The sentinel lymph node research (SLN has been effective in the evaluation of nodal status in patients with breast cancer. A negative SLN makes an axillary lymphadenectomy unnecessary. PURPOSE: To identify the SLN of the subareolar region in female dog breasts using blue dye (BD, Technetium (Tc99m or the association of both techniques and to compare their sensibility in the detection of the SLN. METHODS: Seventeen female dogs were studied. 55 breasts were analyzed. DB and/or Tc99m were used for the identification of SLN. Tc99m was introduced two hours before the experiment. BD was introduced some minutes before the procedure. Once the SLN was localized its dissection was performed. RESULTS

  13. Comportamiento del diagnóstico precoz del cáncer de mama y cérvicouterino en el municipio Cienfuegos Performance of Early Diagnosis of Breast and Cervical Cancer in the Municipality of Cienfuegos

    Directory of Open Access Journals (Sweden)

    Julio Padrón González

    2013-06-01

    Full Text Available Fundamento: el cáncer de mama y cérvicouterino están entre las más frecuentes causas de muerte en la población femenina. Su diagnóstico está entre los programas priorizados del Sistema de Salud Pública. Objetivo: describir el comportamiento del Programa del Cáncer de Mama y de Cuello Uterino en el municipio de Cienfuegos. Métodos: estudio descriptivo y transversal que se realiza en el marco del proyecto CARMEN y comprende el periodo 2010-2011. Se tomó una muestra aleatoria, estratificada al azar. Se analizaron variables como: edad, estado civil, color de la piel, visita de profesionales de la salud, dominio sobre el autoexamen de mama, examen clínico de las mamas, mamografía, prueba citológica y tiempo transcurrido desde el último chequeo de cada una de las pruebas. Se utilizó el cuestionario del estudio CARMEN. Para el análisis de los resultados se utilizó el paquete estadístico SPSS versión 15,00. El nivel de significación estadístico que se utilizó fue del 95 %. Resultados: un total de 428 mujeres (41,1 % llevaban más de un año sin ser chequeadas y de ellas 49 (4,6 % llevaba más de cinco años. El 71,2 % de la muestra estudiada nunca se ha realizado una mamografía, del 28,6 % que se las ha realizado. El 91,0 % de las mujeres en las edades comprendidas en el Programa alguna vez se ha hecho la prueba citológica. Conclusiones: no se alcanzan los propósitos establecidos por el Programa Integral para el Control del Cáncer en Cuba. Quedan demostradas las áreas de insuficiencias del Programa de Control del Cáncer de Mama y de Cuello Uterino.Background: breast and cervical cancer are among the most frequent causes of death in women. Therefore, the early detection of these diseases is one of the prioritized programs of the Public Health System. Objective: to describe the performance of the Breast and Cervical Cancer Program in the municipality of Cienfuegos. Methods: a cross-sectional descriptive study was conducted

  14. New Hadronic Spectroscopy

    International Nuclear Information System (INIS)

    Faccini, R.

    2010-01-01

    In the past few years the field of hadron spectroscopy has seen renewed interest due to the publication, initially mostly from B-Factories, of evidences of states that do not match regular spectroscopy, but are rather candidates for bound states with additional quarks or gluons (four quarks for tetraquarks and molecules and two quarks and gluons for hybrids). A huge effort in understanding the nature of this new states and in building a new spectroscopy is ongoing. This paper reviews the experimental and theoretical state of the art on heavy quarkonium exotic spectroscopy, with particular attention on the steps towards a global picture.

  15. Advances in DUV spectroscopy

    DEFF Research Database (Denmark)

    Buchhave, Preben; Tidemand-Lichtenberg, Peter; Mogensen, Claus Tilsted

    The would-be advantages of deep UV (DUV) spectroscopy are well known, but the potential applications have so far not been fully realized due to technological limitations and, perhaps, lack of bright ideas. However, new components and new knowledge about DUV spectra and spectroscopic methods...... combined with increasing needs for solutions to practical problems in environmental protection, medicine and pollution monitoring promise a new era in DUV spectroscopy. Here we shall review the basis for DUV spectroscopy, both DUV fluorescence and DUV Raman spectroscopy, and describe recent advances...

  16. Spectroscopy for Dummies

    DEFF Research Database (Denmark)

    Lindvold, Lars René

    This presentation will give short introduction to the most pertinent topics of optical spectroscopy. The following topics will be discussed: • The origin of spectra in UV, VIS and IR spectral range • Spectroscopic methods like absorption, luminescence and Raman • Wavelength dispersive optical...... components • Materials for use optical spectroscopy • Spectrometer geometries • Detectors for use in spectrometer • Practical examples of optical spectroscopy The objective of this presentation is to give the audience a good feel for the range of possibilities that optical spectroscopy can provide....

  17. Idade como fator prognóstico no câncer de mama em estádio inicial Edad como factor pronóstico en el cáncer de mama en fase inicial Age as a prognostic factor in early breast cancer

    Directory of Open Access Journals (Sweden)

    Bernardo Garicochea

    2009-04-01

    Full Text Available OBJETIVO: Analisar a idade como fator prognóstico no câncer de mama em estádio clínico inicial. MÉTODOS: Estudo retrospectivo que analisou as características clínicas e a sobrevida livre de doença de 280 pacientes entre 25 e 81 anos com câncer de mama estágio clínico I e II com acompanhamento em hospital de Porto Alegre (RS, de 1995 a 2000. Dados clínicos, patológicos, tratamento e desfechos foram extraídos dos prontuários das pacientes. As pacientes foram divididas em dois grupos conforme a idade ao diagnóstico (40 anos. Os dois grupos foram comparados quanto ao estágio clínico, histologia, expressão de receptores hormonais, terapia e radioterapia utilizando o teste qui-quadrado e/ou exato de Fisher e para análise de sobrevida, o teste de long-rank e método de Kaplan-Meier. RESULTADOS: Do total de 280 mulheres estudadas, 54 (19,3% tinham até 40 anos de idade. Ambos os grupos de pacientes eram similares em estágio clínico, histologia e expressão de receptores hormonais. A proporção de pacientes com sobrevida livre de doença em seguimento de 56 meses foi significativamente maior nas pacientes acima de 40 anos (84% versus 70%. Proporcionalmente, as pacientes mais jovens receberam mais terapia adjuvante (88,8% versus 77,8%. Houve diferença significativa na probabilidade das mulheres acima de 40 anos de permanecerem livre de doença (84%, sendo mais evidente quando comparadas às pacientes com OBJETIVO: Analizar la edad como factor pronóstico en el cáncer de mama en fase clínico inicial. MÉTODOS: Estudio retrospectivo que analizó las características clínicas y la sobrevida libre de enfermedad de 280 pacientes entre 25 y 81 años con cáncer de mama fase clínica I y II con acompañamiento en hospital de Porto Alegre (Sur de Brasil, de 1995 a 2000. Datos clínicos, patológicos, tratamiento y resultados fueron extraídos de los prontuarios de las pacientes. Las pacientes fueron divididas en dos grupos conforme la

  18. Diagnóstico precoce do câncer de mama e colo uterino em mulheres do município de Guarapuava, PR, Brasil Diagnósticos precoz de cáncer de mama y de cuello uterino en mujeres del municipio de Guarapuava, PR, Brasil Early diagnosis of breast and cervical cancer in women from the municipality of Guarapuava, PR, Brazil

    Directory of Open Access Journals (Sweden)

    Cíntia Raquel Bim

    2010-12-01

    Full Text Available O objetivo desta pesquisa é identificar a freqüência com que é realizado o diagnóstico precoce do câncer de mama e de colo uterino no município de Guarapuava, Paraná. Realizou-se estudo transversal de base populacional, incluindo 885 mulheres com idade mínima de 18 anos, no período de outubro a dezembro de 2006. Considerou-se nível de confiança de 95% e margem de erro de 3% para cálculo amostral. Utilizou-se o software Statistica versão 7.1 para a análise dos dados, considerando nível de significância de 5%. O auto-exame das mamas foi realizado por 63% das entrevistadas e o exame clínico em 49%. A mamografia foi realizada por menos de um quarto da amostra. A prevenção do câncer de colo uterino foi praticada pela maioria das mulheres (80%. Conclui-se que as mulheres da amostra estudada realizam exames preventivos de câncer de mama com menos freqüência, se comparado ao exame preventivo de colo de útero.El objetivo de esta investigación fue identificar la frecuencia en la realización de diagnóstico precoz de cáncer de mama y de cuello uterino en mujeres del municipio de Guarapuava-Paraná-Brasil. Se realizó estudio transversal sobre base poblacional de 885 mujeres con edad mínima de 18 años en el período de octubre a diciembre de 2006. Se consideró un nivel de confianza del 95% un margen de error del 3% para el cálculo de la muestra. Se utilizó el software Statistica versión 7.1 para el análisis de los datos, considerándose un nivel de significatividad de 5%. El autoexamen mamario es realizado por el 63% de las entrevistadas, y el examen clínico por el 49%. Menos de un cuarto de la muestra se efectuó mamografías. La prevención del cáncer de cuello uterino fue practicada por la mayoría de las mujeres (80%. Se concluyó en que las mujeres de la muestra estudiada realizan exámenes preventivos del cáncer de mama con menor prevalencia en comparación al examen preventivo de cáncer de cuello de útero

  19. Infrared diode laser spectroscopy

    Czech Academy of Sciences Publication Activity Database

    Civiš, Svatopluk; Cihelka, Jaroslav; Matulková, Irena

    2010-01-01

    Roč. 18, č. 4 (2010), s. 408-420 ISSN 1230-3402 R&D Projects: GA AV ČR IAA400400705 Institutional research plan: CEZ:AV0Z40400503 Keywords : FTIR spectroscopy * absorption spectroscopy * laser diodes Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 1.027, year: 2010

  20. Acoustic force spectroscopy

    NARCIS (Netherlands)

    Sitters, G.; Kamsma, D.; Thalhammer, G.; Ritsch-Marte, M.; Peterman, E.J.G.; Wuite, G.J.L.

    2015-01-01

    Force spectroscopy has become an indispensable tool to unravel the structural and mechanochemical properties of biomolecules. Here we extend the force spectroscopy toolbox with an acoustic manipulation device that can exert forces from subpiconewtons to hundreds of piconewtons on thousands of

  1. Coherent atomic spectroscopy

    International Nuclear Information System (INIS)

    Garton, W.R.S.

    1988-01-01

    The Argonne Spectroscopy Laboratory, initiated and advanced over several decades by F.S. Tomkins and M. Fred, has been a major international facility. A range of collaborative work in atomic spectroscopy is selected to illustrate advances in experimental physics which have been made possible by combination of the talents of Tomkins and Fred with the unique facilities of the Argonne Laboratory. (orig.)

  2. Conhecimento dos métodos para diagnóstico do câncer de mama entre estudantes de medicina Knowledge regarding breast cancer diagnosis among medical students

    Directory of Open Access Journals (Sweden)

    Nilceana Maya Aires

    1999-04-01

    Full Text Available Objetivos: avaliar o nível de conhecimento de noções básicas do diagnóstico do câncer de mama entre os alunos de medicina; promover a discussão entre eles e avaliar o aproveitamento dos alunos do 5º ano médico, após cursar a Disciplina de Ginecologia. Métodos: por meio de questionários aplicados a 348 alunos do total de 550 alunos, do 1º ao 5º ano do curso médico, buscaram-se informações a respeito do conhecimento básico do diagnóstico do câncer de mama. Dos 348 questionários aplicados, 55 (16% foram respondidos por estudantes do 5º ano que haviam cursado a Disciplina de Ginecologia. Destes, 43% eram mulheres, 62% tinham familiares médicos e 17% história familiar de câncer de mama. Resultados: em relação ao conhecimento dos métodos diagnósticos, 84% dos alunos acertaram o sinal mais freqüente do câncer de mama; 34%, o melhor método de rastreio; 49%, quando indicar a mamografia em mulheres assintomáticas; 37%, a periodicidade preconizada da mamografia após 50 anos e 24%, quando associar o ultra-som à mamografia para detecção do câncer de mama. Os alunos do 5º ano apresentaram um índice de acerto para todas as perguntas significativamente maior que os demais. O sexo só apresentou diferença em relação ao maior conhecimento pelas mulheres quanto ao melhor período para o auto-exame e quando indicar a associação do ultra-som à mamografia. A presença de familiares médicos e a história familiar de câncer de mama não influenciaram as respostas. Conclusão: mesmo entre acadêmicos de medicina ainda é grande a desinformação a respeito do diagnóstico do câncer de mama. Não obstante, após cursar a disciplina, esse conhecimento aumenta significativamente.Purpose: to evaluate how knowledgeable medical students at the Universidade Federal de Goiás were concerning the basic diagnostic principles breast cancer. The study also aimed at promoting a debate among the students and at assessing the

  3. Actividad física y riesgo de cáncer de mama en mujeres mexicanas Physical activity and breast cancer risk in Mexican women

    Directory of Open Access Journals (Sweden)

    Sandra Patricia Ortiz-Rodríguez

    2008-04-01

    Full Text Available OBJETIVO: Evaluar el efecto de la actividad física moderada (en horas por semana y METs-hora por semana sobre el riesgo de cáncer de mama (CM. MATERIAL Y MÉTODOS: Se trata de la primera fase de un estudio multicéntrico de casos y controles con base poblacional que se desarrolló en el Distrito Federal, Monterrey y Veracruz, México, en el año 2004. Se analizaron 58 casos y 58 controles pareados a los casos por quinquenio de edad, y pertenencia al sistema de salud; participaron tres hospitales del Instituto Mexicano del Seguro Social, tres del Instituto de Seguridad Social al Servicio de los Trabajadores del Estado y tres de la Secretaría de Salud. RESULTADOS: En mujeres posmenopáusicas se observó una reducción del riesgo de CM por cada hora semanal adicional de actividad física moderada (RM= 0.91; IC95% 0.85-0.97; en mujeres premenopáusicas, la disminución del riesgo no tuvo significancia estadística (RM= 0.99; IC95% 0.94-1.05 (p= 0.048, modificación de efecto. CONCLUSIONES: La actividad física reduce el riesgo de CM en mujeres mexicanas posmenopáusicas.OBJECTIVE: To evaluate the effect of moderate physical activity (hours per week and METs hours per week on the risk of breast cancer (BC in Mexican women. MATERIAL AND METHODS: This is the initial stage of a case control multicentric study based in the Federal District, Monterrey and Veracruz, Mexico, during 2004. Fifty eight cases paired to 58 control cases on quinquennium of age, and belonging to the health system were analyzed: three hospitals from the IMSS, three from ISSSTE and three from SS participated. RESULTS: In postmenopausal women, there was a reduction of the risk in BC by every additional hour per week of moderate physical activity (RM= 0.91; IC95% 0.85-0.97; in premenopausal women, the reduction of the risk was not statistically significant (RM= 0.99; IC95% 0.94-1.05 (p= 0.048, effect modification. CONCLUSIONS: Moderate physical activity reduces the risk of BC in

  4. Análisis de la supervivencia del cáncer de mama durante el decenio 1999-2008 en un Hospital Público de Madrid

    Directory of Open Access Journals (Sweden)

    Francisco Colina Ruizdelgado

    2012-01-01

    Full Text Available Fundamentos: El estudio de la supervivencia explora la calidad de la atención proporcionada en un hospital. El objetivo del presente trabajo es conocer las variables demográficas y clinicopatológicas así como la supervivencia y evolución a lo largo del decenio 1999-2008 de las mujeres diagnosticadas de cáncer de mama. Métodos: Se recogió la información relativa a las 2.132 mujeres incluidas en el Registro Hospitalario de tumores en esa década. Su seguimiento se realizó hasta el 31 de marzo de 2011 utilizando como fuente de información el Índice Nacional de Defunciones y la fecha del último contacto de la paciente con el hospital. Se calculó la supervivencia observada, estimada mediante el método actuarial, y la supervivencia relativa, calculada por el método Ederer II, para cada uno de los primeros cinco años de seguimiento junto con su intervalo de confianza al 95%. Resultados: La edad media fue 59,9 ± 14,2 años. 12,3% presentaron carcinoma "in situ", 51,8% localizado, 30% con ganglios positivos y 5% diseminado. Según el tipo histológico, 72,8% fueron ductales y 11,8% lobulillares. Se aplicó cirugía en 90,8%, quimioterapia en 23,4% y radioterapia en 56,7%. La supervivencia global relativa fue 88% a los 5 años; 99,9% en carcinomas "in situ"; 94,3% en localizados; 83,7% en regionales y 25,7% en diseminados. Al tercer año de seguimiento las mujeres diagnosticadas en 2008 mostraron una supervivencia relativa de 94,8% versus 89,5% en las de 1999, pero la estimación a lo largo del seguimiento fluctuó sin existir una tendencia significativa ni de manera global ni por estadios. Conclusiones: La evolución de la supervivencia por año de diagnóstico no mostró incremento estadísticamente significativo, ni comparándola por cohortes de los dos quinquenios ni desglosándola por cohortes de estadio al diagnóstico. No se ha conseguido variar la supervivencia cuando se exploró durante 10 años.

  5. Experiencia de mujeres que reciben diagnóstico de Cáncer de Mamas Experiences of women who obtain diagnosis of breast cancer

    Directory of Open Access Journals (Sweden)

    María Julia Calvo-Gil

    2008-03-01

    Full Text Available Con el fin de dar respuesta a una serie de inquietudes con respecto a la experiencia que viven mujeres en la etapa desde que reciben la información del diagnóstico de Cáncer de Mamas y la Intervención Quirúrgica, utilizamos la metodología de Investigación Cualitativa de trayectoria fenomenológica. El objetivo era comprender sus vivencias en relación a esta compleja situación de vida que deben enfrentar, para contribuir con conocimientos que permitan otorgar una mejor calidad de atención en los profesionales de salud en general, y de Enfermería, en particular. Para esta investigación se llevaron a cabo ocho entrevistas a pacientes de la Unidad de Patología Mamaria (UPM del Hospital Clínico Regional Valdivia (HCRV, de la ciudad de Valdivia, Chile. El rango de edad de las informantes era entre los treinta y nueve y los setenta y ocho años. Sus situaciones familiares eran distintas entre sí con la salvedad de que todas eran madres de familia. Fue posible develar el fenómeno en estudio a través del análisis de los discursos recolectados, los temas de mayor relevancia en la investigación fueron los siguientes: Recibiendo la noticia; Asumiendo con dificultad la aceptación de la enfermedad; Vivenciando el impacto en la estabilidad familiar; Reconociendo sus redes de apoyo y Valorando la atención brindada.With the objective to give answers to a hole number of questions about women’s experience on Breast Cancer, since they were diagnosed until they were operated. We used the Qualitative Research Methodology of Phenomenological Trajectory, to understand their life experience in relation to their disease, to contribute with knowledge that will allow us to improve the quality of health care. For this research I made interviews to eight patients from Pathologic Mammary Unit (PMU of Hospital Clínico Regional Valdivia (HCRV, of Valdivia’s city, Chile. The age range was between thirty nine and seventy eighth years old. Their

  6. Dieta y cáncer de mama en latinoamérica Diet and breast cancer in latin-america

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    Luisa Torres-Sánchez

    2009-01-01

    Full Text Available Mundialmente el cáncer de mama (CM es la primera causa de muerte por tumores malignos entre las mujeres. OBJETIVO: Revisar los estudios epidemiológicos más relevantes sobre dieta y CM en América Latina y el Caribe (ALC. MATERIAL Y MÉTODOS: La búsqueda sistemática realizada en México en el lapso de junio a noviembre del año 2008 en PubMed-Medline, Scielo y Google, identificó 27 estudios en ALC, que evaluaron la asociación entre dieta y CM. RESULTADOS: La investigación sugiere un efecto protector de ciertos vegetales, frutas, pescado, fibra, vitamina B12 y folato, varios fitoestrógenos, licopeno y grasas poliinsaturadas, así como un riesgo potencial por la elevada ingestión calórica, consumo de carnes rojas, procesadas y procesos de cocción, leche y productos lácteos, grasas saturadas y sacarosa. CONCLUSIONES: El impacto del consumo de alimentos y nutrimentos específicos sobre la incidencia del CM no es concluyente, por lo cual se requieren más estudios específicos.Breast cancer (BC is the primary cause of death from malignant tumors in women worldwide. OBJECTIVE: Review epidemiological studies from the Latin-America and Caribbean (LAC region. MATERIAL AND METHODS: A systematic search, carried out during June-November 2008 in Mexico of PubMed/Medline, Scielo, and Google identified 27 epidemiological studies in LAC that evaluated associations between diet and BC. RESULTS:The research on diet and BC suggests the protective effect of certain fruits, vegetables, fish, fiber, vitamin B12, folate, various phytoestrogens, lycopene, and polyunsaturated fats; as well as the potential risk associated with elevated caloric consumption, consumption of red meat and processed meats, certain meat cooking techniques, milk and some other dairy products, saturated fat, and sucrose. CONCLUSIONS: The impact of specific foods and nutrients on breast cancer incidence is inconclusive. Further research is needed on this topic.

  7. Tendencias de mortalidad por cáncer de mama en Córdoba, Argentina, 1986-2011: algunas interpretaciones sociohistóricas

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    Natalia Tumas

    Full Text Available OBJETIVO: Analizar e interpretar las tendencias de mortalidad por cáncer de mama (CM en las últimas décadas en la provincia de Córdoba, Argentina, en función de los cambios demográficos y características del contexto sociopolítico. MÉTODOS: Se calcularon tasas de mortalidad por CM crudas, estandarizadas (método directo y específicas por edad, para Córdoba, en el período 1986-2011. Mediante la aplicación RiskDiff®, se analizó la variación observada en las tasas crudas entre 1986 y 2011. Se ajustaron modelos de regresión Joinpoint® a las tasas estandarizadas y específicas por grupos etarios. Se consultaron fuentes de datos secundarias (leyes, decretos, programas de salud para obtener información sobre el contexto sociopolítico del período estudiado. RESULTADOS: La tasa cruda de mortalidad por CM aumentó 24,97% entre 1986 y 2011, siendo esto atribuible a un aumento del riesgo de morir (5,22%, a cambios en la estructura (19,75% y al tamaño poblacional (39,66%. La tasa estandarizada de mortalidad por CM presentó tendencia creciente hasta 1996 (porcentaje de cambio anual [PCA] = 1,62%; P < 0,05, y luego comienza a descender (PCA = -2,1%; P < 0,05, advirtiéndose una desaceleración alrededor del año 2001. Para las interpretaciones sociohistóricas, se consideraron como ejes de análisis las transiciones demográfica, epidemiológica y sanitaria, así como hechos socioeconómicos y políticos del período estudiado. CONCLUSIONES: El comportamiento de la mortalidad por CM en este período se asocia a factores de índole contextual (demográficos, históricos, económicos, políticos. Los resultados de este trabajo contribuyen a definir acciones y políticas en torno la problemática del CM y en materia del cuidado de salud de las mujeres.

  8. Linfedema pós-câncer de mama: comparação de duas técnicas fisioterapêuticas - estudo piloto

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    Nara Fernanda Braz da Silva Leal

    Full Text Available INTRODUÇÃO: O câncer de mama apresenta relevantes efeitos físicos e psicológicos. Entre as formas de tratamento, as cirurgias conservadoras, muitas vezes com esvaziamento linfático axilar e seguidas por radioterapia, têm papel preponderante. Uma importante complicação pós-tratamento é o surgimento do linfedema no membro superior homolateral. A principal terapêutica para o linfedema é a fisioterapia complexa descongestiva. A estimulação elétrica vem sendo utilizada na prática clínica para a redução do edema, sendo, por isso, uma nova alternativa para o tratamento do linfedema a ser pesquisada. OBJETIVO: Realizar um estudo piloto para comparar os efeitos da fisioterapia complexa descongestiva com um protocolo que inclui estimulação elétrica, exercícios terapêuticos e uso da braçadeira elástica na redução do linfedema secundário com o esvaziamento linfático axilar. MATERIAIS E MÉTODOS: Doze voluntárias foram divididas aleatoriamente em dois grupos e submetidas a diferentes protocolos terapêuticos (FCD e EAV. A redução do linfedema foi avaliada por meio da perimetria e da volumetria de ambos os membros superiores. As intervenções foram realizadas duas vezes por semana por um período de sete semanas. RESULTADOS: Não se observou diferença na redução do linfedema entre os protocolos utilizados. CONCLUSÃO: Com uma amostra pequena de pacientes, não se observaram diferenças entre as técnicas na redução do linfedema quando aplicadas na fase de manutenção. Fatores como tempo de instalação do linfedema, grau de esvaziamento axilar, radicalidade da cirurgia e aplicação de radioterapia na região afetada contribuem para o estágio do linfedema e sucesso de seu tratamento.

  9. Tumor filodes de mama con metástasis en pulmón Phyllodes tumor of the breast with lung metastasis

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    Ernesto Arias Beatón

    2012-04-01

    Full Text Available Se describe el caso clínico de una paciente de 63 años de edad, quien ingresó en el Hospital General Docente "Dr. Juan Bruno Zayas Alfonso" de Santiago de Cuba por presentar tos seca persistente, expectoración escasa (en ocasiones amarillenta, astenia y pérdida de peso. En el examen físico se palpó un tumor en la mama derecha, confirmado a través de ecografía y mamografía. Los resultados de la biopsia por aspiración con aguja fina fueron positivos de células neoplásicas, compatibles con carcinoma. La radiografía de tórax y la tomografía axial computarizada revelaron la presencia de imágenes metastásicas pulmonares, por lo cual se realizó la exéresis del tumor con un margen de seguridad de 2 cm. Mediante el estudio histopatológico se confirmó la existencia de un tumor filodes, de manera que fue preciso indicar 3 ciclos de quimioterapia (esquema CISCYVADACT, del que solo se cumplieron 2, pues la anciana evolucionó desfavorablemente y falleció 3 meses después.The case report of a 63-year-old patient is described, who was admitted to "Dr. Juan Bruno Zayas Alfonso" Teaching General Hospital of Santiago de Cuba due to persistent dry cough, little expectoration (sometimes yellowish, asthenia and loss of weight. On physical examination a tumor was palpated in the right breast, which was confirmed through sonography and mammogram. The results of the fine-needle biopsy were positive for neoplastic cells, consistent with carcinoma. Chest radiography and computerized axial tomography revealed the presence of lung metastatic images, reason why tumor excision with a safety margin of 2 cm was performed. The presence of phyllodes tumor was confirmed by means of the histopathologic study, so that it was necessary to indicate 3 cycles of chemotherapy (CISCYVADACT scheme, of which only two were administered as the old woman had an unfavorable course and she died 3 months later.

  10. Tendencias del cáncer de mama en América Latina y el Caribe Breast cancer trends in Latin America and the Caribbean

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    Rafael Lozano-Ascencio

    2009-01-01

    Full Text Available OBJETIVO: Describir la magnitud y distribución espaciotemporal del cáncer de mama (CaMa en América Latina y el Caribe (LAC de 1979 a 2005. El CaMa destaca como la causa de muerte más importante por tumores malignos en las mujeres latinoamericanas, incluso por arriba del cáncer cervicouterino. MATERIAL Y MÉTODOS: Revisión y organización de las estadísticas nacionales e internacionales (registros, estudios publicados y bases de datos sobre incidencia y mortalidad. Elaboración de estimadores básicos, razones de mortalidad para cada país y análisis de tendencias. RESULTADOS: Aun con el rezago de información presente en la región, se observa un incremento de la incidencia y la mortalidad por CaMa. La razón de muertes/casos en los países de LAC muestra problemas de acceso a la detección y tratamiento. CONCLUSIONES: El reto es mejorar los sistemas de información y la infraestructura diagnóstica para la detección oportuna y el tratamiento adecuado con la finalidad de detener la tendencia ascendente de la mortalidad prematura.Breast cancer is currently the most significant cause of death from malignancies in Latin American women, including cervical cancer. OBJECTIVE: Describe the magnitude and spatial-temporal distribution of breast cancer in Latin America and the Caribbean (LAC from 1979-2005. MATERIAL AND METHODS: National and international incidence and mortality statistics were reviewed and organized (registries, databases, and published literature, basic estimators and mortality ratios for each country were calculated and trends were analyzed. RESULTS: Despite substantial data gaps in incidence for many countries, an increase in incidence and mortality is observed in LAC countries. Deaths/cases ratios illustrate problems in access to detection and treatment and the greatest gaps are observed in poorer countries. CONCLUSIONS: A regional effort is needed to improve information systems related to cancer in general and breast cancer

  11. Primary processes of the electron-protic species coupling in pure aqueous phases: - femtosecond laser spectroscopy study; - quantum approach of the electron-water interaction

    International Nuclear Information System (INIS)

    Pommeret, Stanislas

    1991-01-01

    This thesis work deals with the coupling mechanisms between an electron, water molecules or protic species (hydronium ion, hydroxyl radical). Two complementary studies have been carry out in pure aqueous phases. The first one is concerned with the structural aspect of the hydrated electron which is studied via a semi-quantum approach Splitting Operator Method. The results indicates the importance of the second hydration shell in the localisation of an electron at 77 and 300 Kelvin. The second part of this work relates to the dynamic of the primary processes in light or heavy water at room temperature: the ion-molecule reaction, radical pair formation, geminate recombination of the hydrated electron with the hydronium ion and the hydroxyl radical. The dynamic of these reactions is studied by time resolved absorption spectroscopy from the near infrared to the near ultraviolet with a few tens femto-seconds temporal precision. The analysis of the primary processes takes into account the protic properties of water molecules. (author) [fr

  12. Applying the COM-B model to creation of an IT-enabled health coaching and resource linkage program for low-income Latina moms with recent gestational diabetes: the STAR MAMA program.

    Science.gov (United States)

    Handley, Margaret A; Harleman, Elizabeth; Gonzalez-Mendez, Enrique; Stotland, Naomi E; Althavale, Priyanka; Fisher, Lawrence; Martinez, Diana; Ko, Jocelyn; Sausjord, Isabel; Rios, Christina

    2016-05-18

    One of the fastest growing risk groups for early onset of diabetes is women with a recent pregnancy complicated by gestational diabetes, and for this group, Latinas are the largest at-risk group in the USA. Although evidence-based interventions, such as the Diabetes Prevention Program (DPP), which focuses on low-cost changes in eating, physical activity and weight management can lower diabetes risk and delay onset, these programs have yet to be tailored to postpartum Latina women. This study aims to tailor a IT-enabled health communication program to promote DPP-concordant behavior change among postpartum Latina women with recent gestational diabetes. The COM-B model (incorporating Capability, Opportunity, and Motivational behavioral barriers and enablers) and the Behavior Change Wheel (BCW) framework, convey a theoretically based approach for intervention development. We combined a health literacy-tailored health IT tool for reaching ethnic minority patients with diabetes with a BCW-based approach to develop a health coaching intervention targeted to postpartum Latina women with recent gestational diabetes. Current evidence, four focus groups (n = 22 participants), and input from a Regional Consortium of health care providers, diabetes experts, and health literacy practitioners informed the intervention development. Thematic analysis of focus group data used the COM-B model to determine content. Relevant cultural, theoretical, and technological components that underpin the design and development of the intervention were selected using the BCW framework. STAR MAMA delivers DPP content in Spanish and English using health communication strategies to: (1) validate the emotions and experiences postpartum women struggle with; (2) encourage integration of prevention strategies into family life through mothers becoming intergenerational custodians of health; and (3) increase social and material supports through referral to social networks, health coaches, and

  13. Fatores de risco para linfedema após câncer de mama: uma revisão da literatura Risk factors of arm lymphedema after breast cancer: a literature review

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    Anke Bergmann

    2008-01-01

    Full Text Available O linfedema representa uma das principais seqüelas do câncer de mama. Esta revisão da literatura visou discutir os principais fatores associados ao linfedema após o tratamento do câncer de mama. Foram selecionados 26 artigos publicados entre janeiro de 2000 e março de 2008 nas bases Medline e Lilacs, utilizando os descritores breast neoplasms, lymphedema, upper extremity, arm e risk factors. Sua revisão permitiu discutir os fatores relacionados ao linfedema, quanto a: clínica e paciente (tabagismo, escolaridade, etnia, comorbidades, hipertensão arterial, diabetes melito, menopausa, idade, peso corporal, índice de massa corporal, atividade física, membro dominante, restrição articular, infecção, seroma e trauma no membro superior; tratamento do câncer de mama (cirurgia, reconstrução mamária, número de linfonodos retirados, nível da linfadenectomia axilar, radioterapia, quimioterapia, hormonioterapia e tempo transcorrido após o tratamento; tumor (tamanho, grau, localização, comprometimento dos linfonodos axilares e estadiamento. A revisão feita indica que a linfadenectomia axilar, a radioterapia em cadeias de drenagem e a obesidade são fatores preponderantes do risco para desenvolvimento do linfedema.Arm lymphedema is one of the most frequent sequelae of breast cancer treatment. The purpose of this literature review was to discuss main risk factors of lymphedema after breast cancer treatment. The search in Medline and Lilacs databases, by means of key words breast neoplasms, lymphedema, upper extremity, arm, and risk factors, allowed selecting 26 studies published between January, 2000, and March, 2008. This review discusses factors linked to: clinic and the patient (smoking, education level, race/ethnicity, comorbidity, hypertension, diabetes, menopause, age, weight, body mass index, physical activity, handedness, impaired range of motion, infection, seroma and arm injuries; breast cancer treatment (type of surgery

  14. Câncer de mama: mortalidade crescente na Região Sul do Brasil entre 1980 e 2002 Increase in breast cancer mortality in Southern Brazil from 1980 to 2002

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    Andrea T. Cadaval Gonçalves

    2007-08-01

    Full Text Available O câncer de mama é apontado como o tipo de câncer mais prevalente no mundo. No Brasil, as taxas de mortalidade por câncer de mama continuam elevadas, observando-se diferenças inter-regionais. Foi realizado um estudo ecológico de série temporal (1980-2002 na Região Sul, com dados anuais do Departamento de Informação e Informática do SUS (DATASUS, para avaliar o comportamento do coeficiente de mortalidade por câncer de mama, padronizado por idade. Utilizou-se regressão linear simples e múltipla para estimar as taxas de mortalidade e as diferenças entre os três Estados. O Rio Grande do Sul parte de um patamar mais elevado e apresenta maior taxa média de mortalidade (14,45, sendo significativamente diferente (p Breast cancer is the most prevalent form of cancer in the world. Breast cancer mortality rates are high in Brazil and show striking variations between geographic regions. A time-trend ecological study was performed in Southern Brazil from 1980 to 2002. Data were collected from the Mortality Information System (Ministry of Health to assess age-standardized mortality rates. Linear regression for mortality time-trend analysis and multiple regression for mortality differences among three States were calculated. The highest mean mortality rate (14.45 was observed in Rio Grande do Sul, significantly greater (p < 0.001 than in Santa Catarina (8.93 and Paraná (9.95. An annual increase of 0.47 in the mortality rate was observed in the three States of Southern Brazil. According to these results, the South of Brazil and especially the State of Rio Grande do Sul showed a significant upward trend in breast cancer mortality. Continued efforts are needed to help explain these numbers and reverse the present situation.

  15. Breastfeeding and breast cancer: a case-control study in Southern Brazil Amamentação e câncer de mama: estudo de caso-controle no Sul do Brasil

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    Sérgio Tessaro

    2003-12-01

    Full Text Available To investigate the relationship between breastfeeding and breast cancer in Southern Brazil, a case-control design was employed, with two age-matched control groups. A total of 250 cases of breast cancer were identified in women from 20 to 60 years of age, with 1,020 hospital and community controls. The main study variables were occurrence of breastfeeding and duration of breastfeeding. A multivariate conditional logistic regression analysis was employed. According to the results, breastfeeding did not have a protective effect against breast cancer. The odds ratio (OR for women who breastfed was 0.9 (95% CI: 0.8-1.2 compared to women who did not breastfeed. For women who breastfed for six months or less, the OR was 1.0 (95% CI: 0.6-1.8. In pre-menopausal women who breastfed for more than 25 months, the OR was 0.95 (95% CI: 0.5-3.5, and in post-menopausal women OR was 1.27 (95% CI: 0.5-3.1, compared to women who had not breastfeed.Para investigar esta relação, entre amamentação e câncer de mama no Sul do Brasil, utilizou-se um delineamento de caso-controle com dois grupos de controles, emparelhados por idade. Foram identificados 250 casos de câncer de mama em mulheres de 20 a 60 anos e 1.020 controles hospitalares e controles de vizinhança. As principais variáveis estudadas foram a ocorrência e o tempo da amamentação. A análise multivariada foi realizada por meio de regressão logística condicional, não encontrando efeito protetor da amamentação contra o câncer de mama. A razão de odds (RO para quem amamentou foi de 0,9 (IC95%: 0,8-1,2 comparando-se com quem não amamentou. Para as mulheres que amamentaram por seis meses ou menos, a RO foi de 1,0 (IC95%: 0,6-1,8. Entre as mulheres na pré-menopausa que amamentaram por mais de 25 meses, a RO foi de 0,95 (IC95%: 0,5-3,5 e na pós-menopausa foi de 1,27 (IC95%: 0,5-3,1 comparando-se com o grupo das que não amamentaram.

  16. História familiar em segundo grau como fator de risco para câncer de mama Second-degree family history as a risk factor for breast cancer

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    Rafael Marques de Souza

    1998-09-01

    Full Text Available Objetivos: investigar a associação entre história familiar de câncer de mama em segundo grau e o risco de apresentar a doença. Métodos: estudo de caso-controle com casos incidentes. Foram avaliados 66 casos e 198 controles selecionados entre mulheres que realizaram mamografia em Serviço Privado de Radiodiagnóstico no período de janeiro de 94 a julho de 97. Casos e controles foram pareados quanto idade, idade da menarca, da primeira gestação e da menopausa, paridade, uso de anticoncepcionais orais e terapia de reposição hormonal. Resultados: não houve diferença significativa entre casos e controles em relação a outros fatores de risco que não história familiar em segundo grau. As pacientes com câncer de mama apresentaram maior chance de ter história familiar em segundo grau comparadas aos controles (RC=2,77; IC 95%, 1,03-7,38; p=0,039. Conclusões: a neoplasia maligna de mama está associada à presença de história familiar em segundo grau para essa doença.Purpose: to evaluate the association between second-degree family history of breast cancer and the risk to develop the disease. Methods: case-control study of incident cases. Sixty-six incident breast cancer cases and 198 controls were selected among women who were submitted to mammography in a private clinic between January 1994 and July 1997. Cases and controls were paired regarding age, age at menarche, at first live birth, at menopause, parity, oral contraceptives and use of hormonal replacement therapy. Results: there was no significant difference between cases and controls regarding all risk factors evaluated, besides second-degree family history. Patients with breast cancer were more likely to have second-degree relatives with breast cancer when compared to controls (OR=2.77; 95% CI, 1.03-7.38; p=0.039. Conclusions: malignant neoplasm of the breast is significantly associated with a second-degree family history of this disease.

  17. Políticas públicas para la detección del cáncer de mama en México Public policies for the detection of breast cancer in Mexico

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    Olga Georgina Martínez-Montañez

    2009-01-01

    Full Text Available El cáncer de mama es un problema de salud pública, prioritario por su magnitud y trascendencia, que se relaciona con las transiciones demográfica y epidemiológica del país. Con el envejecimiento de la población, y una mayor exposición a los factores de riesgo, cobrará mayor relevancia en la sociedad y los servicios de salud, que deberán responder a las necesidades crecientes de detección y atención de esta tumoración mediante programas costo-efectivos. El propósito de este artículo es exponer un análisis de la mortalidad por el cáncer de mama, así como las recomendaciones internacionales con mayor consenso sobre la organización de los programas de tamizaje; por último, se presentan los aspectos medulares del programa de acción para la detección y control del cáncer de mama durante la presente administración (2007-2012. Las políticas para el control de esta neoplasia en México están dirigidas a la organización y el crecimiento de la infraestructura para el desarrollo de un programa nacional de detección temprana, diagnóstico oportuno y tratamiento con calidad óptima, trato cordial y respeto a los derechos de las pacientes.Breast Cancer is a significant public health problem associated with epidemiological and demographic transitions that are currently taking place in Mexico. Aging and increased exposure to risk factors are thought to increase breast cancer incidence, having great relevance for the society and health services. Under this scenario, the health system must respond to the growing needs for better breast cancer screening services. In this paper we present an update of breast cancer mortality, general international recommendations for breast cancer screening programs and key aspects of the Mexico Action Program for Breast Cancer Screening and Control 2007-2012. Breast cancer policies are aimed at organizing and increasing the infrastructure to develop a National Program for Detection, Diagnosis and

  18. Tendencias e indicadores sociales de la mortalidad por cáncer de mama y cuello uterino: Antioquia, Colombia, 2000-2007 Trends and social indicators of both mortality breast cancer and cervical cancer in Antioquia, Colombia, 2000-2007

    Directory of Open Access Journals (Sweden)

    Armando Baena

    2011-12-01

    Full Text Available OBJETIVO: Estimar tasas estandarizadas por edad (TEE de mortalidad por cáncer de mama y cérvix 2000-2007 y explorar indicadores sociales que expliquen la variabilidad de las tasas. MATERIAL Y MÉTODOS: Las TEE de mortalidad se estimaron por el método directo y mediante regresión lineal se relacionaron con indicadores sociales por subregión. RESULTADOS: La TEE de cáncer de mama en Antioquia fue 11.3 por 100 000 mujeres-año y para cáncer cervical 9.1. En Medellín, la TEE de cáncer de mama fue 12.5, 1.8 veces la tasa de cáncer cervical. Se observó una disminución del cáncer cervical en Medellín (valor-p=0.03 entre 2000 y 2007, pero no en el resto de Antioquia. La mortalidad de cáncer cervical se relacionó con el porcentaje de miseria (valor-p=0.0003. CONCLUSIONES: La mortalidad por estas neoplasias ha permanecido constante en Antioquia, con una amplia variación de la mortalidad por cáncer cervical por subregión asociada con niveles de pobreza.OBJECTIVE: To estimate the mortality age-standardized rates (ASR for breast and cervical cancer from 2000-2007 and explore social indicators that explain the variability of rates in Antioquia. MATERIAL AND METHODS: The ASR was estimated by the direct method and linear regression was used to relate social indicators with rates by subregion. RESULTS: Breast and cervical cancer mortality ASRs in Antioquia were 11.3 and 9.1 per 100 000 woman-years respectively. In Medellin, the breast cancer mortality ASR was 12.5, 1.8 times the rate of cervical cancer. A decrease of cervical cancer ASR between 2000 and 2007 was observed in Medellin (p-value=0.03 but not in the rest of Antioquia. Cervical cancer mortality ASR was related to the percentage of poverty (p-value=0.0003. CONCLUSIONS: Mortality due to these neoplasms has remained constant in Antioquia. The wide variation in mortality from cervical cancer between regions seems to be associated with poverty.

  19. Cavity-enhanced spectroscopies

    CERN Document Server

    van Zee, Roger

    2003-01-01

    ""Cavity-Enhanced Spectroscopy"" discusses the use of optical resonators and lasers to make sensitive spectroscopic measurements. This volume is written by the researcchers who pioneered these methods. The book reviews both the theory and practice behind these spectroscopic tools and discusses the scientific discoveries uncovered by these techniques. It begins with a chapter on the use of optical resonators for frequency stabilization of lasers, which is followed by in-depth chapters discussing cavity ring-down spectroscopy, frequency-modulated, cavity-enhanced spectroscopy, intracavity spectr

  20. Homogeneity spoil spectroscopy

    International Nuclear Information System (INIS)

    Hennig, J.; Boesch, C.; Martin, E.; Grutter, R.

    1987-01-01

    One of the problems of in vivo MR spectroscopy of P-31 is spectra localization. Surface coil spectroscopy, which is the method of choice for clinical applications, suffers from the high-intensity signal from subcutaneous muscle tissue, which masks the spectrum of interest from deeper structures. In order to suppress this signal while maintaining the simplicity of surface coil spectroscopy, the authors introduced a small sheet of ferromagnetically dotted plastic between the surface coil and the body. This sheet destroys locally the field homogeneity and therefore all signal from structures around the coil. The very high reproducibility of the simple experimental procedure allows long-term studies important for monitoring tumor therapy

  1. Baryon spectroscopy at KAON

    Energy Technology Data Exchange (ETDEWEB)

    Comyn, Martin

    1992-07-01

    The unique opportunities for the study of baryon spectroscopy at the TRIUMF KAON Factory are outlined. Related issues in other areas of hadron spectroscopy are discussed. The complex of accelerators that comprise the TRIUMF KAON Factory, and the properties of the separated beams that will be available to experimenters, are described. Initial design considerations for detectors to be used in the study of hadron spectroscopy are presented, along with a proposed detector configuration. The progress towards realization of the TRIUMF KAON Factory is examined, and the timetable for the determination of the initial experimental programme and facilities is explained. 23 refs., 4 figs., 5 tabs.

  2. História reprodutiva e sexual de mulheres tratadas de câncer de mama Reproductive and sexual history of women treated of breast cancer

    Directory of Open Access Journals (Sweden)

    Elisabeth Meloni Vieira

    2013-02-01

    Full Text Available OBJETIVO: Compreender a vida sexual e reprodutiva de mulheres tratadas de câncer de mama. MÉTODOS: Foram entrevistadas 139 mulheres com diagnóstico há pelo menos seis meses, selecionadas aleatoriamente em um serviço de reabilitação. As entrevistas foram feitas entre 2006 e 2010. Todas eram usuárias do SUS, pacientes de um hospital regional e moradoras da região DRS XIII-Ribeirão Preto, Estado de São Paulo. As entrevistadas foram visitadas em seu domicílio onde foi aplicado um questionário face a face que abordava questões relativas às características sociodemográficas, da doença e da vida reprodutiva e sexual, para esta última aplicou-se o instrumento Índice de Função Sexual Feminina (IFSF. A análise estatística incluiu o teste do χ², o teste exato de Fisher e o teste t de Student, análise multivariada por regressão logística e análise fatorial e alfa de Cronbach. RESULTADOS: A maioria teve entre 2 e 3 filhos e 80% utilizaram algum método anticoncepcional. Cerca de metade das mulheres tiveram relação sexual no último mês, 45,3% interromperam as relações sexuais durante o tratamento e 25,9% não interromperam. Houve relato de diminuição da frequência sexual, embora metade das entrevistadas tenha retomado a vida sexual nos primeiros seis meses após o tratamento. Pouco mais de metade apresentou insatisfação sexual. Encontrou-se vida sexual ativa associada à idade menor que 40 anos e a ter parceiro. Não foi encontrada associação entre vida sexual ativa e ao diagnóstico e tipos de tratamento. CONCLUSÃO: A atividade sexual de mulheres tratadas para câncer de mama não está associada aos tratamentos, mas à idade e à oportunidade de ter sexo.PURPOSE: To understand the reproductive and sexual life of women treated for breast cancer. METHODS: A total of 139 women with a diagnosis made at least 6 months ago were interviewed after being randomly selected in a rehabilitation service. The interviews were

  3. Qualidade de vida e sexualidade de mulheres tratadas de câncer de mama Quality of life and sexuality of women treated for breast cancer

    Directory of Open Access Journals (Sweden)

    Priscila Ribeiro Huguet

    2009-02-01

    Full Text Available OBJETIVO: avaliar a qualidade de vida e aspectos da sexualidade de mulheres com câncer de mama segundo o tipo de cirurgia e características sociodemográficas. MÉTODOS: realizou-se um estudo de corte transversal com 110 mulheres tratadas há pelo menos um ano por câncer de mama no Centro de Atenção Integral à Saúde da Mulher da UNICAMP. A qualidade de vida foi avaliada por meio do questionário WHOQOL-bref e as questões sobre sexualidade, por um questionário específico, no qual se utilizou o coeficiente alpha de Cronbach para verificar validade e concordância das respostas (alpha=0,72 e a técnica de análise fatorial com critério de autovalor e rotação máxima de variância, resultando em dois componentes assim denominados: intrínseco ou intimidade (como a mulher se vê sexualmente e extrínseco ou atratividade (como a mulher acredita que os outros a veem sexualmente. As variáveis sociodemográficas foram avaliadas nos domínios do questionário da OMS e nos componentes de sexualidade por meio do teste de Kruskal-Wallis seguido pelo teste de Mann-Whitney e pela correlação de Spearman. RESULTADOS: idade, escolaridade, tipo de cirurgia e tempo desde a cirurgia não influenciaram a qualidade de vida nos domínios físico, meio ambiente, psicológico e relações sociais. Mulheres com relacionamento marital estável tiveram escores maiores nos domínios psíquico (p=0,04 e relações sociais (p=0,02. Maior nível socioeconômico influenciou a qualidade de vida nos domínios físico (p=0,01 e meio ambiente (p=0,002. Em relação à sexualidade, houve influência da idade no componente extrínseco (p=0,0158. Mulheres com relacionamento marital estável tiveram escores maiores de qualidade de vida em ambos os componentes de sexualidade. Maior escolaridade influenciou positivamente no fator intrínseco. Mulheres submetidas à quadrantectomia ou à mastectomia com reconstrução imediata apresentaram melhores escores em relação

  4. COMPARACIÓN ENTRE DIFERENTES TÉCNICAS DE ESTUDIO DEL GANGLIO CENTINELA DESPUÉS DE NEOADYUVANCIA EN CÁNCER DE MAMA

    Directory of Open Access Journals (Sweden)

    Luz Fernanda Sua Villegas

    2011-01-01

    Full Text Available

    RESUMEN 

    Introducción. El papel de la biopsia del ganglio centinela realizada después de quimioterapia neoadyuvante es controvertido. El objetivo del presente estudio es analizar el valor del ganglio centinela en los tumores de mama avanzados que han recibido neoadyuvancia y estudiarlos con técnicas de hematoxilina y eosina, inmunohistoquímica y molecular de reacción en cadena de la polimerasa (RT-PCR. Material y métodos. Un total de 33 pacientes fueron incluidos en el estudio; estos enfermos recibieron neoadyuvancia y se les  realizó la técnica del ganglio centinela. Una vez  extraído el ga nglio, este era enviado a anatomía patológica, donde era evaluado y posteriormente se fragmentaba, utilizando entre un 25% y 50% del ganglio para el estudio en el laboratorio de biología molecular. Resultados. Los ganglios centinelas se estudiaron con las técnicas de hematoxilina y eosina, inmunohistoquímica y la molecular, encontrando un incremento de la sensibilidad con la última técnica, la del RT-PCR. Los ganglios centinelas fueron negativos en un 45.1% y las linfadenectomías fueron negativas en un 61.3% después de neoadyuvancia. Las recidivas locales a 5 años equivalen al 8.3%. Para nuestra serie la tasa de sobrevida libre de enfermedad a 5 años en estadio II es del 100% y en estadio III es del 87.5%. Conclusión. Existe un escaso número de pacientes estudiadas, sin un seguimiento que avale el uso de la biopsia del ganglio centinela después de neoadyuvancia, por lo que actualmente sólo debiera realizarse con fines de investigación.

    Al comparar las técnicas de hematoxilina y eosina, inmunohistoqu

  5. Participating in a support group: experience lived by women with breast cancer Participación en un grupo de apoyo: experiencia de mujeres con cáncer de mama Participação em grupo de apoio: experiência de mulheres com câncer de mama

    Directory of Open Access Journals (Sweden)

    Cleoneide Paulo Oliveira Pinheiro

    2008-08-01

    Full Text Available The goal of the study was to understand the meaning of support groups in the life of women with breast cancer. It is a qualitative study with 30 mastectomized women who belonged to six support groups in the city of Fortaleza, Ceará. Data were collected with semi-structured interviews, organized and analyzed based on the interactionism concept. The results characterized the support groups as a mechanism to cope with the situation and to overcome the suffering derived from the diagnosis and treatment of the breast carcinoma. The socialization of the experiences facilitated the search for assistance in the support groups, since sharing the problems with mastectomized women was a way to preserve a high self-esteem, have faith and overcome some difficulties. Participating in the group provided well-being and a differentiated care, since it was considered a way to know, accept and understand the disease and its cure, facilitating the socialization of ideas.En este estudio, se buscó comprender el significado de los grupos de apoyo a las mujeres con cáncer de mama. Se trata de estudio cualitativo con 30 mujeres mastectomizadas pertenecientes a seis grupos de apoyo de la ciudad de Fortaleza-Ceará. Los datos recolectados por medio de entrevista semi-estructurada fueron organizados y analizados bajo el marco teórico interaccionista. Los resultados caracterizaron los grupos como un mecanismo para el enfrentamiento de la situación y de superación del sufrimiento que se originan en el diagnóstico y tratamiento del carcinoma mamario. La socialización de las experiencias facilitó la búsqueda de auxilio en los grupos de apoyo, ya que compartir problemas entre las mujeres mastectomizadas, era una forma de mantener la auto-estima elevada, de creer, de confiar y superar algunas dificultades. La participación en el grupo proporcionaba bienestar y un cuidado diferenciado, ya que fue considerada una forma de conocer, aceptar y comprender la enfermedad y su

  6. Stressors in Breast Cancer Post-Treatment: a Qualitative Approach Factores estresantes del post-tratamiento del cáncer de mama: un enfoque cualitativo Estressores pós-tratamento do câncer de mama: um enfoque qualitativo

    Directory of Open Access Journals (Sweden)

    Gisele da Silva

    2010-08-01

    Full Text Available With the increasing effectiveness of breast cancer treatment, the scientific interest in investigating the quality of life of survivors has increased. However, research addressing the post-treatment period is still scarce. The aim of this study was to identify the stressors present in the lives of women in the one to five years post-diagnosis period. The sample was composed of 16 women assisted at a specialized mastectomy rehabilitation service. Data were collected through semi-structured interviews and analyzed using content analysis. The results indicate conflicts with self-image and alteration in the feeling of autonomy, fear in relation to the evolution of the condition, feelings of guilt about the disorder generated in the family, experience of disturbing social situations and a desire to return to their professional occupation. These results reveal the existence of stressors in this phase and the importance of support offered by psychosocial rehabilitation services for this population.Con la creciente resolutividad del tratamiento del cáncer de mama, ha aumentado el interés científico por la investigación de la calidad de vida de las sobrevivientes. Sin embargo, todavía son escasas las investigaciones que abordan el período post-tratamiento. Este estudio tuvo por objetivo identificar los factores estresantes presentes en la vida de mujeres en el período de uno a cinco años post-diagnóstico. Fueron investigadas 16 mujeres atendidas en un servicio especializado en rehabilitación de mastectomizadas. Los datos fueron recolectados mediante entrevista semiestructurada y analizados por medio del análisis de contenido. Los resultados indicaron conflictos con la autoimagen, alteración en la sensación de autosuficiencia, miedo en relación a la evolución del cuadro, sentimiento de culpa por el trastorno generado en la familia, vivencia de situaciones sociales perturbadoras y, deseo de retornar a la ocupación profesional. Esos

  7. Câncer de Colo de Útero e Mama: Concepção dos Gestores do Sistema Único de Saude Cáncer de cuello uterino y mama: concepto de los gestores del sistema único de salud Cervical and Breast Cancer: Concept of Managers of Unique Health System

    Directory of Open Access Journals (Sweden)

    Maria Carla Vieira Pinho

    2012-07-01

    Full Text Available Objetivo do estudo é apreender a compreensão dos gestores do Sistema Único de Saúde (SUS sobre o Programa de Controle do Câncer de Colo de Útero e de Mama, no que se diz respeito às suas diretrizes e funcionamento, a fim de avaliar suas concepções sobre o programa referido. Pesquisa qualitativa, entrevista aberta com seis gestores do Sistema Único de Saúde, sendo um estadual, um municipal e quatro coordenadores locais. Os resultados mostraram que não há apropriação das diretrizes do Programa pelo gestor municipal e pelos coordenadores das unidades. O abastecimento do material para coleta de exame se faz de forma regularizada, o controle laboratorial é pouco conhecido e os coordenadores não conhecem os sistemas de informações. Diante disso, fica explícita a necessidade de promover capacitação dos profissionais para a execução deste programa, além de enfatizar a importância da integração entre os trabalhadores do âmbito estadual, municipal e local.El objetivo del estudio es aprehender la comprensión de los gestores del Sistema Único de Salud (SUS sobre el Programa de Control del Cáncer de Colon de útero y de Mama, con respecto a sus políticas y operaciones, a fin de evaluar sus concepciones sobre el programa referido. Estudio cualitativo, entrevista abierta con seis gestores del Sistema Único de Salud, siendo un estadual, un municipal y cuatro coordinadores locales. Los resultados mostraron que no hay asunción de las directrices del programa por el gestor municipal y por los coordinadores de las unidades. El abastecimiento del material para colecta de examen se hace de forma reglamentar, el control laboratorial es poco conocido y los coordinadores no conocen los sistemas de informaciones. Teniendo en cuenta esto, queda explícita la necesidad de promover la capacitación de los profesionales para la ejecución de este programa, allende enfatizar la importancia de la integración entre los trabajadores del

  8. Interação entre especialidades: miocardiopatia dilatada e neoplasia de mama HER2 positiva Interacción entre especialidades: miocardiopatía dilatada y neoplasia de mama HER2 positiva Interaction between specialties: dilated cardiomyopathy and HER2-positive breast Cancer

    Directory of Open Access Journals (Sweden)

    Solange Moraes Sanches

    2010-01-01

    Full Text Available O progresso no conhecimento dos mecanismos da doença e suas potenciais possibilidades de tratamento, têm com o incremento da pesquisa básica, trazido a algumas situações inusitadas. Como quando algo observado em uma situação específica, definida na prática clínica, pode ser transportado para o laboratório, instigando a investigação de uma provável terapêutica em uma doença não relacionada e fazendo o caminho inverso da "bench-to-bedside". Nos últimos anos, o uso de um anticorpo monoclonal, o trastuzumabe, mostrou-se imprescindível no tratamento das neoplasias de mama com amplificação/superexpressão de HER2, com ganho de sobrevida significativo nos contextos adjuvante e terapêutico. A observação da ocorrência de cardiotoxicidade induzida pelo trastuzumabe, assim como a identificação dos mecanismos relacionados a esse efeito colateral, possibilitaram a pesquisa desses mesmos fatores na miocardiopatia dilatada, de uma forma muito interessante.El progreso en el conocimiento de los mecanismos de la enfermedad y sus potenciales posibilidades de tratamiento ocurre mediante el incremento de la investigación básica que se añade a algunas situaciones inusitadas. Así como cuando algo observado en una situación específica, definida en la práctica clínica, se puede trasladar al laboratorio, fomentando la investigación de una probable terapéutica en una enfermedad no relacionada, y haciendo el camino inverso de la "bench-to-bedside". En los últimos años, el uso de un anticuerpo monoclonal, el trastuzumabe, se halló imprescindible en el tratamiento de las neoplasias de mama con amplificación/superexpresión de HER2, con ganancia de sobrevida significativa en los contextos adyuvante y terapéutico. La observación de la ocurrencia de cardiotoxicidad inducida por el trastuzumabe, así como la identificación de los mecanismos relacionados a este efecto colateral, posibilitaran la investigación de estos mismos factores

  9. Prevenção de câncer de mama em mulheres idosas: uma revisão La prevención de cáncer de mama en mujeres ancianas: una revisión Prevention of breast cancer in elderly women: a review

    Directory of Open Access Journals (Sweden)

    Cecília Maria Resende Gonçalves de Carvalho

    2009-08-01

    Full Text Available Trata-se de um estudo de revisão bibliográfica nacional, que objetivou refletir sobre a prevenção do câncer de mama em idosas. Esta curiosidade surgiu a partir da constatação da transição demográfica brasileira e da evidente feminização da velhice, o que impõe demandas assistênciais específicas e integrais para este segmento populacional. Ressalta-se a necessidade de ampliar o conhecimento a cerca da problemática, bem como a superação do negligenciamento na prevenção desta patologia, especialmente na velhice. Focalizaram-se dois tópicos reflexivos: Envelhecimento Feminino, Saúde e Gênero e Lacuna na integralidade da assistência à mulher idosa: conscientizar para libertar. Espera-se com esta reflexão possa subsidiar melhorias na assistência, favorecer a inclusão desta temática no ensino e estimular novas investigações.Se trata de una revisión bibliografica nacional que tuvo por objeto reflexionar sobre la prevención de cáncer de mama en las mujeres ancianas. Esta curiosidad surgió de la observación de la transición demográfica brasileña y del evidente feminización de la vejez, que impone demandas específicas e integrales para la ayuda a este grupo de población. Se insiste en la necesidad de ampliar el conocimiento sobre el problema, así como la superación de la negligencia en la prevención de esta enfermedad, especialmente en la vejez. Se centró dos temas de reflexión: El envejecimiento de Mujeres, Salud y Género y la Brecha de la exhaustividad de la asistencia a la mujer mayor: poner en libertad a la conciencia. Se espera con esta reflexión subvencionar la mejora de la asistencia, promover la inclusión de esta cuestión en la educación y estimular nuevas investigaciones.This is a national literature review that aimed to reflect on the prevention of breast cancer in the elderly woman. This curiosity arose from the observation of demographic transition and of course Brazilian feminisation of old

  10. IR Spectroscopy. An introduction

    International Nuclear Information System (INIS)

    Guenzler, H.; Gremlich, H.U.

    2002-01-01

    The following topics are dealt with: absorption and molecular design, spectrometers, sample preparation, qualitative spectral interpretation and assertions, near-infrared and far-infrared spectroscopy, reference spectra and expert systems

  11. Charmonium spectroscopy, 1987

    International Nuclear Information System (INIS)

    Cahn, R.N.

    1987-01-01

    The state of charmonium spectroscopy is reviewed. All analyses proceed from a spin-dependent, non-relativistic Schroedinger equation. Many of the possible branching ratios for charm like states are investigated. 17 refs

  12. Dual THz comb spectroscopy

    Science.gov (United States)

    Yasui, Takeshi

    2017-08-01

    Optical frequency combs are innovative tools for broadband spectroscopy because a series of comb modes can serve as frequency markers that are traceable to a microwave frequency standard. However, a mode distribution that is too discrete limits the spectral sampling interval to the mode frequency spacing even though individual mode linewidth is sufficiently narrow. Here, using a combination of a spectral interleaving and dual-comb spectroscopy in the terahertz (THz) region, we achieved a spectral sampling interval equal to the mode linewidth rather than the mode spacing. The spectrally interleaved THz comb was realized by sweeping the laser repetition frequency and interleaving additional frequency marks. In low-pressure gas spectroscopy, we achieved an improved spectral sampling density of 2.5 MHz and enhanced spectral accuracy of 8.39 × 10-7 in the THz region. The proposed method is a powerful tool for simultaneously achieving high resolution, high accuracy, and broad spectral coverage in THz spectroscopy.

  13. Multidimensional high harmonic spectroscopy

    International Nuclear Information System (INIS)

    Bruner, Barry D; Soifer, Hadas; Shafir, Dror; Dudovich, Nirit; Serbinenko, Valeria; Smirnova, Olga

    2015-01-01

    High harmonic generation (HHG) has opened up a new frontier in ultrafast science where attosecond time resolution and Angstrom spatial resolution are accessible in a single measurement. However, reconstructing the dynamics under study is limited by the multiple degrees of freedom involved in strong field interactions. In this paper we describe a new class of measurement schemes for resolving attosecond dynamics, integrating perturbative nonlinear optics with strong-field physics. These approaches serve as a basis for multidimensional high harmonic spectroscopy. Specifically, we show that multidimensional high harmonic spectroscopy can measure tunnel ionization dynamics with high precision, and resolves the interference between multiple ionization channels. In addition, we show how multidimensional HHG can function as a type of lock-in amplifier measurement. Similar to multi-dimensional approaches in nonlinear optical spectroscopy that have resolved correlated femtosecond dynamics, multi-dimensional high harmonic spectroscopy reveals the underlying complex dynamics behind attosecond scale phenomena. (paper)

  14. Foundations of laser spectroscopy

    CERN Document Server

    Stenholm, Stig

    2005-01-01

    A simple presentation of the theoretical foundations of steady-state laser spectroscopy, this text helps students to apply theory to calculations with a systematic series of examples and exercises. 1984 edition.

  15. Surface vibrational spectroscopy (EELS)

    International Nuclear Information System (INIS)

    Okuyama, Hiroshi

    2006-01-01

    Adsorbed states of hydrogen on metal surfaces have been studied by means of electron energy loss spectroscopy (EELS). In this article, typical spectra and analysis as well as recent development are introduced. (author)

  16. EDITORIAL: Nano Meets Spectroscopy Nano Meets Spectroscopy

    Science.gov (United States)

    Birch, David J. S.

    2012-08-01

    The multidisciplinary two-day Nano Meets Spectroscopy (NMS) event was held at the National Physical Laboratory (NPL), Teddington, UK, in September 2011. The event was planned from the outset to be at the interface of several areas—in particular, spectroscopy and nanoscience, and to bring together topics and people with different approaches to achieving common goals in biomolecular science. Hence the meeting cut across traditional boundaries and brought together researchers using diverse techniques, particularly fluorescence and Raman spectroscopy. Despite engaging common problems, these techniques are frequently seen as mutually exclusive with the two communities rarely interacting at conferences. The meeting was widely seen to have lived up to its billing in good measure. It attracted the maximum capacity of ~120 participants, including 22 distinguished speakers (9 from outside the UK), over 50 posters and a vibrant corporate exhibition comprising 10 leading instrument companies and IOP Publishing. The organizers were Professor David Birch (Chair), Dr Karen Faulds and Professor Duncan Graham of the University of Strathclyde, Professor Cait MacPhee of the University of Edinburgh and Dr Alex Knight of NPL. The event was sponsored by the European Science Foundation, the Institute of Physics, the Royal Society of Chemistry, NPL and the Scottish Universities Physics Alliance. The full programme and abstracts are available at http://sensor.phys.strath.ac.uk/nms/program.php. The programme was quite ambitious in terms of the breadth and depth of scope. The interdisciplinary and synergistic concept of 'X meets Y' played well, cross-fertilization between different fields often being a source of inspiration and progress. Fluorescence and Raman spectroscopy provided the core, but the meeting had little repetition and also attracted contributions on more specialist techniques such as CARS, super-resolution, single molecule and chiral methods. In terms of application the

  17. Positron annihilation spectroscopy

    International Nuclear Information System (INIS)

    Sundar, C.S.; Viswanathan, B.

    1996-01-01

    An overview of positron annihilation spectroscopy, the experimental techniques and its application to studies on defects and electronic structure of materials is presented. The scope of this paper is to present the requisite introductory material, that will enable a better appreciation of the subsequent specialized articles on the applications of positron annihilation spectroscopy to investigate various problems in materials science. (author). 31 refs., 3 figs

  18. Ultrafast infrared vibrational spectroscopy

    CERN Document Server

    Fayer, Michael D

    2013-01-01

    The past ten years or so have seen the introduction of multidimensional methods into infrared and optical spectroscopy. The technology of multidimensional spectroscopy is developing rapidly and its applications are spreading to biology and materials science. Edited by a recognized leader in the field and with contributions from top researchers, including experimentalists and theoreticians, this book presents the latest research methods and results and will serve as an excellent resource for other researchers.

  19. Spectroscopy stepping stones

    International Nuclear Information System (INIS)

    Hammer, M.R.; Sturman, B.T.

    2003-01-01

    Determining the elemental composition of samples has long been a basic task of analytical science. Some very powerful and convenient approaches are based on the wavelength-specific absorption or emission of light by gas-phase atoms. Techniques briefly described as examples of analytical atomic spectrometry include atomic emission and absorption spectroscopy, inductively coupled plasma emission and mass spectroscopy and laser induced breakdown spectrometry

  20. Fast antihydrogen beam spectroscopy

    International Nuclear Information System (INIS)

    Neumann, R.

    1989-01-01

    The motivation for production and precision spectroscopy of antihydrogen atoms is outlined. An experimental configuration is considered, concerning laser-microwave spectroscopy of a fast hydrogen beam with characteristics similar to those of an antihydrogen beam emanating from an antiproton-positron overlap region in an antiproton storage ring. In particular, a possible experiment for the measurement of the ground state hyperfine structure splitting is described. (orig.)

    1. Diagnóstico molecular del Cáncer de mama por el oncogén HER-2/NEU mediante la técnica de Fish para el Departamento del Cauca (Colombia

      Directory of Open Access Journals (Sweden)

      M. Osorio

      2001-07-01

      Full Text Available Se evaluó la presencia del gen Her2-/neu en una muestra de 28 pacientes con diagnóstico decáncer de mama a quienes se les realizaron biopsias o mastectomías desde enero de 2000 afebrero de 2002. Las láminas embebidas en parafina fueron suministradas por la Compañía dePatólogos del Cauca y el Departamento de Patología del Hospital Universitario San Joséde Popayán; Cauca. Se utilizó la técnica de Hibridización in situpor Fluorescencia (FISH paravisualizar copias del gen Her-2/neu.

    2. Imágenes de rayos X : técnicas de producción y procesamiento digital destinadas a la detección temprana del cáncer de mama

      OpenAIRE

      Quintana Zurro, Clara Inés

      2014-01-01

      Tesis (Doctor en Física)--Universidad Nacional de Córdoba, Facultad de Matemática, Astronomía y Física, 2014. El objetivo general de la tesis radica en contribuir a la optimización del proceso de detección temprana del cáncer de mama a partir del estudio de técnicas de producción y procesamiento digital de imágenes destinados a tal fin. En primera instancia se trabaja sobre la metodología de diagnóstico estándar (mamografía), donde se estudia la influencia de los parámetros de adquisición ...

    3. Neutropenia febril em pacientes com câncer de mama submetidas à quimioterapia: experiência de 12 anos Febrile neutropenia in patients with breast cancer submitted to chemotherapy: a 12 year experience

      Directory of Open Access Journals (Sweden)

      Omero Benedicto Poli Neto

      2004-12-01

      Full Text Available OBJETIVOS: Identificar as características das pacientes com câncer de mama que desenvolveram neutropenia febril, estabelecer fatores de risco para a sua ocorrência e indicadores de evolução desfavorável. MÉTODOS: Realizamos um estudo caso-controle com 65 pacientes. Foram incluídas 13 pacientes que desenvolveram neutropenia febril e quatro controles por caso pareados por data e número de ciclos de quimioterapia prévios, drogas e doses empregadas. Os dados clínicos e laboratoriais foram obtidos dos prontuários médicos. Utilizamos odds ratio (OR e intervalo de confiança (IC de 95% para estimar a significância dos fatores de risco. RESULTADOS: Identificamos dois fatores de risco associados à ocorrência de neutropenia febril: a realização de quimioterapia nas primeiras 24 horas após a cirurgia (OR: 159,9 IC 95%: 9,5 a 2699 e a realização concomitante de quimioterapia e radioterapia da mama (OR: 108,3 IC 95%: 4,9 a 2391. Não observamos diferenças significativas entre casos e controles quanto à idade, índice de massa corporal e contagem de neutrófilos e monócitos antes da quimioterapia. Três pacientes foram a óbito (23,1%. Duas delas tinham idade superior a 60 anos, não apresentavam comorbidades, tinham recebido o primeiro ciclo de CMF nas primeiras 24 horas após a cirurgia e tiveram infecção de sítio cirúrgico. CONCLUSÕES: Os principais fatores de risco associados a neutropenia febril em pacientes com câncer de mama foram quimioterapia nas primeiras 24 horas após a cirurgia, e uso concomitante de quimioterapia e radioterapia da mama. Nosso estudo mostra, portanto, que estas situações devem ser evitadas.PURPOSE: To identify the characteristis of patients with breast cancer who developed febrile neutropenia and to establish risk factors for its incidence and parameters for an unfavorable evolution. PATIENTS AND METHODS: A case-control study was performed and included 65 patients: 13 patients presented febrile

    4. Relação entre a superexpressão do receptor do fator de crescimento epitelial humano (HER-2) e estresse oxidativo em pacientes portadoras do câncer de mama

      OpenAIRE

      Vanessa Jacob Victorino

      2012-01-01

      Introdução e objetivos: O câncer de mama é o tumor maligno mais letal em mulheres em todo o mundo, e durante o seu desenvolvimento, cerca de 20% dos pacientes apresentam superexpressão do receptor do fator de crescimento epidérmico humano-2 (HER2/neu, também conhecido como ErbB2). A família HER2 abrange quatro outros membros presentes na membrana celular como dímeros: HER1, HER2, HER3 e HER4. HER2 pode dimerizar com outro HER2 ou com HER1, HER3 ou HER4. A superexpressão desses receptores poss...

    5. Efeitos da meditação prânica sobre o bem-estar físico e emocional e os níveis de melatonina de sobreviventes de câncer de mama

      OpenAIRE

      Castellar, Juarez Iório

      2014-01-01

      Introdução. O câncer, caracteristicamente, afeta todas as dimensões da saúde humana. O crescimento tumoral compromete a saúde física pela dor e pelas diversas disfunções celulares e orgânicas associadas à condição da sobrevivente do câncer de mama, inclusive a alteração do sistema imunitário. Também afeta a saúde mental-emocional, o que se expressa pela ansiedade, depressão e pelas manifestações de tristeza, cansaço, raiva, desesperança, medo, ressentimento, amargura e culpa, que podem também...

    6. Repercussões do câncer de mama na imagem corporal da mulher: uma revisão sistemática Breast cancer repercussion in female body image: a systematic review

      Directory of Open Access Journals (Sweden)

      Tatiana Rodrigues de Almeida

      2012-01-01

      Full Text Available Além de apresentar implicações inerentes a qualquer adoecimento, o câncer de mama feminino é também um dos cânceres mais temidos, por afetar não apenas o corpo anatômico, mas principalmente alguns aspectos psicossociais da paciente. Dentre estes, destaca-se sua imagem corporal. O presente trabalho teve como objetivo realizar uma revisão sistemática de artigos que abordaram a imagem corporal no câncer de mama, com descrição do conteúdo da produção encontrada. Para tanto, realizou-se uma revisão dos artigos publicados entre 2000 e 2010 em revistas científicas indexadas, por meio de busca nas bases de dados bibliográficos SciELO, PubMed, PePSIC e PsycINFO. Concluiu-se que o adoecimento por câncer da mama acaba por adoecer também a imagem corporal da mulher assistida, e que seu impacto varia conforme o tipo de procedimento cirúrgico escolhido, os tratamentos complementares adotados, a rede de apoio que cerca a paciente e suas características individuais. A alteração na imagem corporal tem múltiplas implicações na vida sexual e conjugal da mulher, afetando as relações com seu círculo social e consigo mesma, influenciando sua autoestima e seu sentimento de feminilidade e podendo levar a sintomas de ansiedade e depressão. Embora avanços tenham sido verificados no estudo da relação entre imagem corporal e câncer de mama, esta pesquisa aponta para a existência de um campo fértil de investigação sobre o tema, ainda pouco explorado.Besides presenting implications inherent to any illness, female breast cancer is also one of the most feared cancers, affecting not only the anatomic body, but mainly some psychosocial aspects of the patient and, among these, the body image is highlighted. This paper aimed to carry out a systematic review of papers that approached the body image in breast cancer, with the description of the content of the production. To do so, a review was carried out of papers published between 2000 and

    7. El cáncer de mama en México: evolución, panorama actual y retos de la sociedad civil History, overview and challenges of the breast cancer movement in Mexico

      Directory of Open Access Journals (Sweden)

      María Elena Maza-Fernández

      2009-01-01

      Full Text Available Este artículo ilustra la evolución que han tenido las organizaciones de la sociedad civil de lucha contra el cáncer de mama, el papel que juegan, y los cambios que debe haber para que sus actividades impacten de fondo la calidad de vida de las mujeres y hombres con esta enfermedad. Hoy día, el concepto de sociedad civil se ha transformado y retoma cierta autonomía y penetra como sinónimo de participación. La sociedad civil es protagonista de temas centrales tales como salud, derechos humanos y asistencia social entre otros. Las asociaciones de cáncer de mama cuentan con libertad para organizarse, impulsar iniciativas a favor de los demás para mejorar su bienestar y desarrollar sus potencialidades en beneficio propio y de la comunidad en la que se desenvuelven. Estas asociaciones deben enfocarse en promover cambios en el sistema que resulten en una mejora de los servicios y en consecuencia de calidad de vida.This essay describes the history of the civil society breast cancer movement in Mexico, the role played by breast cancer NGOs and the changes they must undergo for their activities to impact the quality of life of men and women dealing with this disease. The concept of civil society today has been transformed, regaining a degree of autonomy and being at the center of a participatory democracy. Civil society takes a lead role in key issues such as health, civil rights, and public welfare. Breast cancer organizations have the liberty to organize and promote initiatives that will help others' welfare and develop their full potential for the benefit of themselves and their community. These organizations must focus on promoting changes in the system that will result in better services and better quality of life for their constituents.

    8. Conduta das funcionárias de um hospital na adesão ao programa de prevenção do câncer de mama

      Directory of Open Access Journals (Sweden)

      Adeli Cardoso de Azevedo

      2012-08-01

      Full Text Available OBJETIVO: Avaliar a adesão das funcionárias de um hospital em um programa de prevenção do câncer de mama por meio da mamografia. MATERIAIS E MÉTODOS: O estudo contou com 91 funcionárias analisadas por meio de questionário e acompanhamento da periodicidade da mamografia de 2000 até 2009. RESULTADOS: Foram realizadas 247 mamografias. Quarenta e oito funcionárias informaram obedecer à periodicidade do exame, e dessas, 12,6% realizaram o exame por solicitação médica, 47,9% por conhecerem a importância do exame, 4,1% por terem casos de câncer na família e 35,4% por rotina. Quarenta e três funcionárias não obedeceram à periodicidade do exame, sendo que 37,3% não fazem por não terem solicitação médica, 20,9% por não conseguirem pelo Sistema Único de Saúde, 18,6% por medo, 23,2% por não conhecerem a importância. CONCLUSÃO: A adesão ao programa foi baixa. As funcionárias desse hospital não têm conhecimento sobre a prevenção do câncer de mama.

    9. Factores reproductivos y cáncer de mama: principales hallazgos en américa latina y el mundo Reproductive factors and breast cancer: principal findings in latin america and the world

      Directory of Open Access Journals (Sweden)

      Gabriela Torres-Mejía

      2009-01-01

      Full Text Available La edad temprana de la menarca y tardía de la menopausia, la nuliparidad y la edad tardía de la madre en el primer embarazo se han relacionado con un incremento del riesgo de cáncer de mama (CaMa. Por el contrario, la paridad y el aumento del tiempo en meses de lactancia, en particular la que se ofrece al primer hijo, se han vinculado con un riesgo menor. La hipótesis de que la función ovárica, a través de sus hormonas, desempeña una función importante en el origen del cáncer de mama se ha sustentado en diversos estudios durante mucho tiempo. Aunque la mayor parte de los factores de riesgo relacionados con las características reproductivas es difícil de modificar, incrementar los meses de lactancia y evitar la exposición a los carcinógenos conocidos durante los periodos de desarrollo de la glándula mamaria son medidas para reducir el riesgo de esta enfermedad.Early age at menarche and late age at menopause, nulliparity, and late age at first pregnancy have been associated with an increased risk of BC. In contrast, parity and the increase in time breastfeeding, particularly during the first child have been associated with a decreased risk. The hypothesis that ovarian function, through their hormones, plays an important role in the etiology of breast cancer has been supported by various studies for a long time. Although most of the risk factors associated with reproductive characteristics are difficult to modify, to increase the breastfeeding time and to avoid exposure to known carcinogens during periods of development of the mammary gland are good strategies to reduce the risk of this disease.

    10. Prevalence of risk factors for breast neoplasm in the city of Maringá, Paraná state, Brazil Prevalencia de factores de riesgo para el cáncer de mama en el municipio de Maringá, en el estado de Paraná, Brasil Prevalência de fatores de risco para o câncer de mama no município de Maringá, Paraná, Brasil

      Directory of Open Access Journals (Sweden)

      Jéssica Carvalho de Matos

      2010-06-01

      Full Text Available The aim of this study was to identify the prevalence of the risk factors for breast cancer among women between 40 and 69 years old in the city of Maringá, Paraná State, Brazil. An analytical, exploratory and cross-sectional study was carried out through a population research at homes in Maringá. The sample was composed of 439 women between 40 and 69 years old. The data were collected by home interviews, stored using the Statistical Package for the Social Sciences (SPSS software and presented in tables as absolute and relative frequency. The predominant ethnical group was Caucasian with an average age of 52 years. Among risk factors identified in the present study, an expressive number of overweight women were found. It is important and necessary to put in practice actions that identify the modifiable risk factors for the development of breast tumors in order to reduce morbidity and mortality levels due to this pathology.Ese estudio pretendió identificar la prevalencia de los factores de riesgo para el cáncer de mama en mujeres de 40 la 69 años, en el municipio de Maringá. Fue realizado un estudio analítico, exploratorio, de corte transversal, tipo encuesta poblacional domiciliar. El estudio fue realizado con 439 mujeres entre 40 y 69 años. Los datos fueron recolectados durante entrevistas domiciliares, almacenados en el programa Statisitical Package for the Social Sciences (SPSS y presentados en forma de frecuencia absoluta y relativa. La mayor parte de las mujeres estudiadas pertenecía a la raza blanca, con promedio de edad de 52 años. Entre los factores de riesgo identificados se destaca el gran número de mujeres con sobrepeso. Se resalta la importancia de la implementación de acciones que tengan por objetivo identificar los factores de riesgo modificables para el desarrollo del cáncer de mama para, con eso, disminuir el número de nuevos casos y de muerte por esa patología.Esse estudo pretendeu identificar a prevalência dos

    11. Detecção do linfonodo sentinela em câncer da mama: comparação entre métodos

      Directory of Open Access Journals (Sweden)

      Xavier Nilton Leite

      2002-01-01

      Full Text Available Objetivos: avaliar a eficiência da cintilografia mamária, do detector manual de raios gama (probe e do corante azul vital para a localização do linfonodo sentinela (LNS, estabelecendo a sensibilidade, o valor preditivo negativo (VPN e a acurácia do mapeamento do LNS. Métodos: neste estudo estão incluídas 88 pacientes com câncer de mama atendidas consecutivamente e com axila clinicamente negativa. Foi utilizado o radiofármaco tecnécio ligado ao colóide dextran 500 (Dextran 99mTc, para cintilografia pré-operatória, realizada em 58 pacientes, e detecção transoperatória com o probe em 53 pacientes. Destas, 47 tiveram as contagens de irradiação gama anotadas e também o intervalo de tempo decorrido entre a injeção e a cirurgia. Foram empregados 2 mL do corante vital Bleu Patente V, injetado em torno do tumor, 5 minutos antes da incisão cirúrgica na axila em todos os casos. O LNS foi avaliado por congelação em 77 casos e todos pela coloração por hematoxilina e eosina. Resultados: a linfocintilografia, realizada em 58 casos, foi útil em 62,1%, sendo que em nove ocorreu mapeamento de dois linfonodos, e com o probe foram confirmados 45 casos (84,9% dos 53 avaliados. Das 47 com anotação de contagens de raios gama e do tempo decorrido da injeção do radiofármaco até a cirurgia, constituíram-se dois grupos para análise, o grupo dia (27 casos e o grupo outro dia (20 casos, que se mostraram diferentes, com significância estatística, tanto no tempo decorrido quanto nas contagens de raios gama, porém sem interferência nos resultados de detecção do LNS. A associação do probe e do corante azul resultou em sucesso nos 53 casos avaliados, assim como em 32 dos 35 casos em que só o corante foi usado. A média de idade das pacientes foi 58 anos. Quarenta e uma pacientes tiveram linfonodos axilares com metástase e apenas duas com LNS falsamente negativo, dando sensibilidade de 95,3%, VPN de 95,5% e acurácia de 97,6. Conclus

    12. Perfil transcricional e resposta à quimioterapia neoadjuvante em câncer de mama Transcriptional profile and response to neoadjuvante chemotherapy in breast cancer

      Directory of Open Access Journals (Sweden)

      Maria Aparecida Azevedo Koike Folgueira

      2011-06-01

      Full Text Available OBJETIVO: Na tentativa de melhorar a acurácia dos modelos preditivos de resposta à quimioterapia neoadjuvante em câncer de mama, utilizou-se a tecnologia de cDNA microarray para determinar o perfil transcricional dos tumores. A avaliação de assinaturas gênicas, associadas à predição de resposta à quimioterapia neoadjuvante, é o objeto desta revisão. MÉTODOS: Foi realizada busca no banco de dados eletrônico http://www.ncbi.nlm.nih.gov/pubmed/, usando as palavras "breast cancer" AND "neoadjuvant/primary chemotherapy" AND "gene expression profile/microarray". Recuperaram-se 279 publicações, excluindo-se as repetições, selecionando-se para exposição aquelas consideradas mais relevantes pelos autores. RESULTADOS: O número de publicações acerca desse assunto vem crescendo ao longo dos anos, chegando a mais de 50 em 2010, abordando resposta a diferentes quimioterápicos como antraciclinas, taxanos, isoladamente ou em associação. Os primeiros estudos são do início da década passada e utilizaram plataformas de microarray produzidas pelos pesquisadores. Trabalhos mais recentes utilizam plataformas de microarray comerciais, cujos dados são depositados em bancos públicos, permitindo análise de um número maior de amostras. Foram identificados vários perfis transcricionais associados à resposta patológica completa. Outros autores utilizaram como desfecho a resposta clínica ao tratamento, determinando, nesse caso, um painel preditivo de resistência ao esquema quimioterápico em questão. Essa questão também é fundamental, pois pode contribuir para individualizar o tratamento, permitindo que pacientes resistentes a determinado agente quimioterápico sejam submetidos a outro esquema terapêutico. CONCLUSÃO: A identificação de pacientes responsivos à quimioterapia é de fundamental interesse e, apesar de passos importantes terem sido dados, o assunto merece estudos adicionais em vista de sua complexidade.OBJECTIVE: To

    13. Análisis de las recidivas locorregionales por cáncer de mama Analysis of locoregional relapses from breast cancer

      Directory of Open Access Journals (Sweden)

      Oscar Alberto Pérez Gutiérrez

      2012-12-01

      Full Text Available Introducción: la recidiva locorregional, luego de una intervención quirúrgica por cáncer de mama, es una gran preocupación para el paciente y una frustración para el cirujano actuante. Objetivos: realizar un estudio descriptivo de las variables asociadas a la recurrencia tumoral, en 949 pacientes operadas. Métodos: se confeccionó una base de datos con las pacientes operadas desde 2005 hasta 2010, se identificaron las variables y análisis univariables y multivariables para determinar si existió asociación estadística. Resultados: se apreció que la incidencia fue de 4,4 %. La intervención quirúrgica previa más frecuente fue la mastectomía radical modificada en 52,4 %, y 26,2 % de los casos que tenían metástasis ganglionares axilares en ese momento. El tipo histológico más frecuente fue el carcinoma ductal infiltrante, de alto grado de malignidad. La infiltración vascular y linfática estuvo presente en 42,8 %. El tratamiento definitivo más empleado fue la exéresis de la recidiva más radioterapia. El análisis multivariables solo asoció la metástasis ganglionar con la reaparición de la enfermedad. Conclusiones: la metástasis ganglionar axilar sigue siendo un factor de mal pronóstico en el seguimiento extenso de la paciente.Introduction: locoregional relapses after a breast cancer surgery is a big concern for the patient and a frustration to the performing surgeon. Objectives: to perform a descriptive study of the tumor recurrence-associated variables in 949 surgical patients. Methods: a database containing the data from operated patients in the period of 2005 through 2010 was made; the variables were identified and the univariate and multivariate analyses allowed determining the probable statistical association. Results: at was observed that the incidence of locoregional recurrence was 4.4 %. The most common previous surgery was modified radical mastectomy in 52.4 % and 26.2 % of cases with axillary ganglionic

    14. Carcinoma medular da mama: correlação anátomo-radiológica Medullary breast carcinoma: anatomo-radiological correlation

      Directory of Open Access Journals (Sweden)

      Valéria Soares Matheus

      2008-12-01

      Full Text Available OBJETIVO: Avaliar as características radiológicas do câncer de mama medular em pacientes submetidas a tratamento cirúrgico no Instituto Nacional de Câncer (INCA - Ministério da Saúde, Rio de Janeiro, RJ, correlacionando os achados com estudo histopatológico. MATERIAIS E MÉTODOS: Foi realizado estudo descritivo retrospectivo de mulheres submetidas a tratamento cirúrgico no INCA, no período de janeiro de 1997 a dezembro de 2006, para identificação das pacientes com carcinoma medular e análise dos achados radiológicos. RESULTADOS: Foram identificadas 21.287 pacientes com diagnóstico de carcinoma neste período, sendo 76 pacientes com diagnóstico de carcinoma medular típico (0,357%. Nessas pacientes selecionadas, a idade média foi de 51,9 anos (32 a 81 anos. Dezenove pacientes apresentavam lesão na mamografia, sendo 17 (89,5% nódulos e 2 assimetrias focais (10,5%. Entre as pacientes com nódulo, 15 (88,1% apresentavam alta densidade e 2 eram isodensos (11,9%. Doze pacientes apresentavam achados ultra-sonográficos e, destas, 11 (91,6% apresentavam nódulos hipoecóicos. Foi observada uma paciente com nódulo anecóico com áreas de degeneração cística. CONCLUSÃO: O nódulo foi o achado radiológico dominante (89,5%, dos quais 88,1% apresentaram nódulos com alta densidade e margens circunscritas. Apesar das características radiológicas de benignidade, um nódulo com alta densidade, sólido, margens circunscritas e crescimento rápido deve ser investigado para confirmar o diagnóstico.OBJECTIVE: To evaluate radiological findings in patients submitted to surgical treatment for medullary breast cancer at Instituto Nacional de Câncer (INCA, Rio de Janeiro, RJ, Brazil, correlating them with histological results. MATERIALS AND METHODS: A retrospective descriptive study was developed with patients submitted to surgery at INCA, in the period from January 1997 to December 2006, for identifying the presence of medullary breast

    15. Organochlorine exposure and breast cancer risk in Colombian women Exposição a organoclorados e risco de câncer de mama em mulheres colombianas

      Directory of Open Access Journals (Sweden)

      P. Olaya-Contreras

      1998-01-01

      Full Text Available An epidemiological study was performed in Santafé de Bogotá, Colombia, with a total of 306 women enrolled, including 153 incident BC cases and 153 age-matched controls. The objective of this study was to evaluate the association between BC risk and serum dichlorodiphenyl-dichloroethene (DDE levels. Sociodemographic and reproductive data, diet, and past exposure to pesticides were obtained through a structured questionnaire. Chemical analysis of samples was performed by high resolution gas chromatography-ECD. Likelihood of developing BC by exposure to these substances was evaluated through odds ratios (OR adjusted for: first-child breast-feeding, family BC history, body mass index (BMI, parity, and menopausal status. Data analysis was performed by conditional logistic regression techniques. Adjusted OR for exposure to serum DDE and BC suggests an increase risk of BC in the higher category of DDE exposure (OR = 1.95; CI 1.10-3.52. The test for trend was not statistically significant (p = 0.09. We confirm that serum DDE levels bear a positive association to risk of BC and could support the association between risk of BC and burden of DDE exposure.Em estudo epidemiológico realizado em Santa Fé de Bogotá, Colômbia, 153 casos incidentes de câncer de mama (CM foram comparados com 153 controles, pareados por idade. O objetivo deste estudo foi avaliar a associação entre o risco de CM e níveis séricos do pesticida DDT (DDE. Dados reprodutivos e sócio-demográficos, características da dieta e informação sobre exposição pregressa a pesticidas foram obtidos por meio de questionário. A análise química de amostras de sangue foi realizada através de cromatografia a gaz de alta resolução - ECD. A verossimelhança de desenvolver CM como decorrência de exposição a estas substâncias foi avaliada através de odds ratios (OR, obtidas por técnicas de regressão logística condicional, ajustadas para amamentação do primogênito, hist

    16. Modeling the high-energy electronic state manifold of adenine: Calibration for nonlinear electronic spectroscopy

      Energy Technology Data Exchange (ETDEWEB)

      Nenov, Artur, E-mail: Artur.Nenov@unibo.it; Giussani, Angelo; Segarra-Martí, Javier; Jaiswal, Vishal K. [Dipartimento di Chimica “G. Ciamician,” Università di Bologna, Via Selmi 2, IT-40126 Bologna (Italy); Rivalta, Ivan [Université de Lyon, CNRS, Institut de Chimie de Lyon, École Normale Supérieure de Lyon, 46 Allée d’Italie, F-69364 Lyon Cedex 07 (France); Cerullo, Giulio [Dipartimento di Fisica, Politecnico di Milano, IFN-CNR, Piazza Leonardo Da Vinci 32, IT-20133 Milano (Italy); Mukamel, Shaul [Department of Chemistry, University of California, Irvine, California 92697-2025 (United States); Garavelli, Marco, E-mail: marco.garavelli@unibo.it, E-mail: marco.garavelli@ens-lyon.fr [Dipartimento di Chimica “G. Ciamician,” Università di Bologna, Via Selmi 2, IT-40126 Bologna (Italy); Université de Lyon, CNRS, Institut de Chimie de Lyon, École Normale Supérieure de Lyon, 46 Allée d’Italie, F-69364 Lyon Cedex 07 (France)

      2015-06-07

      conformational dependent fingerprints in dimeric systems, the performances of the selected reduced level of calculations have been tested in the construction of 2D electronic spectra for the in vacuo adenine monomer and the unstacked adenine homodimer, thereby exciting the L{sub b}/L{sub a} transitions with the pump pulse pair and probing in the Vis to near ultraviolet spectral window.

    17. In vivo spectroscopy

      International Nuclear Information System (INIS)

      Williams, S.R.; Cady, E.B.

      1987-01-01

      The technique which the authors describe in this chapter provides alternative information to imaging, although based upon the same physical principles. The experiments are carried out differently and have instrumental requirements which are not met by a standard imaging system. Furthermore, although the clinical efficacy of NMR imaging has been proven, clinical spectroscopy is very much in its infancy. With the exception of some specific /sup 31/P applications not is not even clear how spectroscopic investigations will be performed. This is particularly true with regard to localization techniques for investigating other than superficial organs and and in the use of /sup 1/H spectroscopy. They attempt to show what information spectroscopy can provide in principle and point out some of the problems associated with such investigations. NMR has come to the notice of the clinical community mainly through its use as an imaging technique, and many may consider spectroscopy as a secondary discipline. NMR spectroscopy, however, has a longer history than imaging and has been a standard technique in chemistry laboratories for more than two decades. It is a technique without peer for structural analysis of molecules and no new chemical compound is discovered or synthesized without an NMR spectrum being taken. The influence of molecular structure on resonant frequency has been termed the chemical shift

    18. Moessbauer spectroscopy. Tutorial book

      International Nuclear Information System (INIS)

      Yoshida, Yutaka; Langouche, Guido

      2013-01-01

      First textbook on Moessbauer Spectroscopy covering the complete field. Offers a concise introduction to all aspects of Moessbauer spectroscopy by the leading experts in the field. Tutorials on Moessbauer Spectroscopy. Since the discovery of the Moessbauer Effect many excellent books have been published for researchers and for doctoral and master level students. However, there appears to be no textbook available for final year bachelor students, nor for people working in industry who have received only basic courses in classical mechanics, electromagnetism, quantum mechanics, chemistry and materials science. The challenge of this book is to give an introduction to Moessbauer Spectroscopy for this level. The ultimate goal of this book is to give this audience not only a scientific introduction to the technique, but also to demonstrate in an attractive way the power of Moessbauer Spectroscopy in many fields of science, in order to create interest among the readers in joining the community of Moessbauer spectroscopists. This is particularly important at times where in many Moessbauer laboratories succession is at stake.

    19. Dissection of Rovibronic Structure by Polarization-Resolved Two-Color Resonant Four-Wave Mixing Spectroscopy

      Science.gov (United States)

      Murdock, Daniel; Burns, Lori A.; Vaccaro, Patrick H.

      2009-08-01

      A synergistic theoretical and experimental investigation of stimulated emission pumping (SEP) as implemented in the coherent framework of two-color resonant four-wave mixing (TC-RFWM) spectroscopy is presented, with special emphasis directed toward the identification of polarization geometries that can distinguish spectral features according to their attendant changes in rotational quantum numbers. A vector-recoupling formalism built upon a perturbative treatment of matter-field interactions and a state-multipole expansion of the density operator allowed the weak-field signal intensity to be cast in terms of a TC-RFWM response tensor, RQ(K)(ɛ4*ɛ3ɛ2*ɛ1;Jg,Je,Jh,Jf), which separates the transverse characteristics of the incident and generated electromagnetic waves (ɛ4*ɛ3ɛ2*ɛ1) from the angular momentum properties of the PUMP and DUMP resonances (Jg,Je,Jh,Jf). For an isolated SEP process induced in an isotropic medium, the criteria needed to discriminate against subsets of rovibronic structure were encoded in the roots of a single tensor element, R0(0)(ɛ4*ɛ3ɛ2*ɛ1;Jg,Je,Jh,Je). By assuming all optical fields to be polarized linearly and invoking the limit of high quantum numbers, specific angles of polarization for the detected signal field were found to suppress DUMP resonances selectively according to the nature of their rotational branch and the rotational branch of the meshing PUMP line. These predictions were corroborated by performing SEP measurements on the ground electronic potential energy surface of tropolone in two distinct regimes of vibrational excitation, with the near-ultraviolet Ã1B2-X˜1A1 (π* ← π) absorption system affording the requisite PUMP and DUMP transitions.

    20. Autobalanced Ramsey Spectroscopy

      Science.gov (United States)

      Sanner, Christian; Huntemann, Nils; Lange, Richard; Tamm, Christian; Peik, Ekkehard

      2018-01-01

      We devise a perturbation-immune version of Ramsey's method of separated oscillatory fields. Spectroscopy of an atomic clock transition without compromising the clock's accuracy is accomplished by actively balancing the spectroscopic responses from phase-congruent Ramsey probe cycles of unequal durations. Our simple and universal approach eliminates a wide variety of interrogation-induced line shifts often encountered in high precision spectroscopy, among them, in particular, light shifts, phase chirps, and transient Zeeman shifts. We experimentally demonstrate autobalanced Ramsey spectroscopy on the light shift prone Yb+ 171 electric octupole optical clock transition and show that interrogation defects are not turned into clock errors. This opens up frequency accuracy perspectives below the 10-18 level for the Yb+ system and for other types of optical clocks.

    1. Terahertz Spectroscopy and Imaging

      CERN Document Server

      Zeitler, Axel; Kuwata-Gonokami, Makoto

      2013-01-01

      "This book presents the current state of knowledge in the field of terahertz spectroscopy, providing a comprehensive source of information for beginners and experienced researchers alike whose interests lie in this area. The book aims to explain the fundamental physics that underpins terahertz  technology and to describe its key applications. Highlights of scientific research in the field of terahertz science are also outlined in some chapters, providing an overview as well as giving an insight into future directions for research.  Over the past decade terahertz spectroscopy has developed into one of the most rapidly growing areas of its kind, gaining an important impact across a wide range of scientific disciplines. Due to substantial advances in femtosecond laser technology, terahertz time-domain spectroscopy (THz-TDS) has established itself as the dominant spectroscopic technique for experimental scientists interested in measurements at this frequency range. In solids and liquids THz radiation is in reso...

    2. Mama Software Features: Uncertainty Testing

      Energy Technology Data Exchange (ETDEWEB)

      Ruggiero, Christy E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Porter, Reid B. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

      2014-05-30

      This document reviews how the uncertainty in the calculations is being determined with test image data. The results of this testing give an ‘initial uncertainty’ number than can be used to estimate the ‘back end’ uncertainty in digital image quantification in images. Statisticians are refining these numbers as part of a UQ effort.

    3. Dye lasers in atomic spectroscopy

      International Nuclear Information System (INIS)

      Lange, W.; Luther, J.; Steudel, A.

      1974-01-01

      The properties of dye lasers which are relevant to atomic spectroscopy are discussed. Several experiments made possible by tunable dye lasers are discussed. Applications of high spectral density dye lasers are covered in areas such as absorption spectroscopy, fluorescence spectroscopy, photoionization and photodetachment, and two- and multi-photon processes. Applications which take advantage of the narrow bandwidth of tunable dye lasers are discussed, including saturation spectroscopy, fluorescence line narrowing, classic absorption and fluorescence spectroscopy, nonoptical detection of optical resonances, heterodyne spectroscopy, and nonlinear coherent resonant phenomena. (26 figures, 180 references) (U.S.)

    4. Electron Paramagnetic Resonance Spectroscopy

      Indian Academy of Sciences (India)

      Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 11. Electron Paramagnetic Resonance Spectroscopy: Biological Applications. B G Hegde. General Article Volume 20 Issue 11 November 2015 pp 1017-1032. Fulltext. Click here to view fulltext PDF. Permanent link:

    5. Photoacoustic and photothermal spectroscopies

      International Nuclear Information System (INIS)

      Sawada, Tsuguo; Kitamori, Takehiko; Nakamura, Masato

      1995-01-01

      Photoacoustic and photothermal spectroscopy methods can be effectively applied to the analysis of microparticles in condensed matter. A more violent photothermal conversion phenomenon of a particle, laser breakdown and accompanying plasma and acoustic emission, was applied to individual detection and analysis of ultrafine particles in ultrapure water. Laser-like nonlinear emission from the plasma was observed. (author)

    6. Nuclear magnetic resonance spectroscopy

      International Nuclear Information System (INIS)

      Rueterjans, H.

      1987-01-01

      Contributions by various authors who are working in the field of NMR imaging present the current status and the perspectives of in-vivo nuclear magnetic resonance spectroscopy, explaining not only the scientific and medical aspects, but also technical and physical principles as well as questions concerning practical organisation and training, and points of main interest for further research activities. (orig./TRV) [de

    7. Single-Molecule Spectroscopy

      Indian Academy of Sciences (India)

      Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 2. Single-Molecule Spectroscopy: Every Molecule is Different! Kankan Bhattacharyya. General Article Volume 20 Issue 2 February 2015 pp 151-164. Fulltext. Click here to view fulltext PDF. Permanent link:

    8. Perspectives in hadron spectroscopy

      Energy Technology Data Exchange (ETDEWEB)

      Richard, J.M. [Universite Joseph Fourier-IN2P3-CNRS, Lab. de Physique Subatomique et Cosmologie, 38 - Grenoble (France)

      2005-07-01

      A brief survey is presented of selected recent results on hadron spectroscopy and related theoretical studies. Among the new hadron states, some of them are good candidates for exotic structures: chiral partners of ground-states, hybrid mesons (quark, antiquark and constituent gluon), four-quark states, or meson-meson molecules.

    9. Outlook for baryon spectroscopy

      International Nuclear Information System (INIS)

      Tripp, R.D.

      1976-09-01

      The review of baryon spectroscopy includes a number of new generation experiments with greatly improved statistics which have emerged and are enhancing experimental knowledge of baryon resonances. The future research directions are pointed out, and some problems and deficiencies which can be resolved with contemporary techniques are mentioned

    10. Laser magnetic resonance spectroscopy

      International Nuclear Information System (INIS)

      Ferrari, C.A.

      1985-01-01

      The technique of laser resonance magnetic resonance allows one to study the high-resolution spectroscopy of transient paramagnetic species, viz, atoms, radicals, and molecular ions. This article is a brief exposition of the method, describing the principles, instrumentation and applicability of the IR and FIR-LMR and shows results of HF + . (Author) [pt

    11. Astronomical Spectroscopy -24 ...

      Indian Academy of Sciences (India)

      growth of spectroscopy and its application to the study of .... Cesium was discovered ten years earlier, in 1859; it is the ... Kirchhoff and Bunsen's discovery; he was spared the pain of seeing ... We will have to go back about twenty years.

    12. Zeeman atomic absorption spectroscopy

      International Nuclear Information System (INIS)

      Loos-Vollebregt, M.T.C. de.

      1980-01-01

      A new method of background correction in atomic absorption spectroscopy has recently been introduced, based on the Zeeman splitting of spectral lines in a magnetic field. A theoretical analysis of the background correction capability observed in such instruments is presented. A Zeeman atomic absorption spectrometer utilizing a 50 Hz sine wave modulated magnetic field is described. (Auth.)

    13. Surface vibrational spectroscopy

      International Nuclear Information System (INIS)

      Erskine, J.L.

      1984-01-01

      A brief review of recent studies which combine measurements of surface vibrational energies with lattice dynamical calculations is presented. These results suggest that surface vibrational spectroscopy offers interesting prospects for use as a molecular-level probe of surface geometry, adsorbate bond distances and molecular orientations

    14. Spectroscopy of new particles

      International Nuclear Information System (INIS)

      Goldhaber, G.

      1977-08-01

      A review of the spectroscopy of the ''psions'' with hidden charm or charm quantum number ch = o is followed by a discussion of charmed mesons and baryons. The anomalous C-μ events and the heavy lepton hypothesis are briefly considered

    15. Nuclear Magnetic Resonance Spectroscopy

      Indian Academy of Sciences (India)

      Home; Journals; Resonance – Journal of Science Education; Volume 9; Issue 1. Nuclear Magnetic Resonance Spectroscopy. Susanta Das. General Article Volume 9 Issue 1 January 2004 pp 34-49. Fulltext. Click here to view fulltext PDF. Permanent link: https://www.ias.ac.in/article/fulltext/reso/009/01/0034-0049. Keywords.

    16. Cuidando de paciente com câncer de mama e osteonecrose mandibular induzida por bisfostonato: relato de experiência Cuidando de pacientes con cáncer de mama y osteonecrosis mandibular inducida por bisfosfonatos: relato de experiencia Providing care for patients with breast cancer and mandible ostheonecrosis induced by bisphosphonates: an experience report

      Directory of Open Access Journals (Sweden)

      Verônica Paula Torel de Moura

      2009-02-01

      Full Text Available OBJETIVO: Descrever as ações desenvolvidas pela enfermeira junto a uma paciente com câncer de mama e metástase óssea que apresentou necrose mandibular induzida pelo uso de bisfosfonato. RESULTADOS: As intervenções de enfermagem incluíram o ensino e reforço das orientações sobre higiene oral, destacando a escovação adequada, bochechos com solução antisséptica sem álcool, bem como sobre o controle da dor. CONCLUSÃO: Destaca-se a importância da atuação multiprofissional e da consulta de enfermagem no seguimento dessas pacientes para detecção precoce e controle dessa complicação.OBJETIVO: Describir las acciones de enfermería implementadas por la enfermera a una paciente con cáncer con metástasis ósea que presentó necrosis mandibular inducida por el uso de bisfosfonatos. RESULTADOS: Las intervenciones de enfermería incluyeron la enseñanza y el refuerzo de las orientaciones sobre la higiene oral, dando destaque al adecuado cepillado de los dientes, gárgaras con solución antiséptica sin alcohol y al control del dolor. CONCLUSIÓN: Es destacada el importancia de la actuación multiprofesional y de la consulta de enfermería en el seguimiento de esas pacientes, visando la detección temprana y el control de esa complicación.OBJECTIVE: To describe a nurse experience in providing care for a patient with cancer of the breast and bone metastasis who presented mandibular ostheonecrosis induced by the use of bisphosphonates. RESULTS: Nursing interventions included the re-enforcement of the guidelines for oral hygiene, highlighting the appropriate teeth-brushing technique, gargling with antiseptic solution without alcohol, as approach to pain management. CONCLUSION: There is a need for multidisciplinary and nursing consultations for early detection and control of potential complications.

    17. Broadband Rotational Spectroscopy

      Science.gov (United States)

      Pate, Brooks

      2014-06-01

      The past decade has seen several major technology advances in electronics operating at microwave frequencies making it possible to develop a new generation of spectrometers for molecular rotational spectroscopy. High-speed digital electronics, both arbitrary waveform generators and digitizers, continue on a Moore's Law-like development cycle that started around 1993 with device bandwidth doubling about every 36 months. These enabling technologies were the key to designing chirped-pulse Fourier transform microwave (CP-FTMW) spectrometers which offer significant sensitivity enhancements for broadband spectrum acquisition in molecular rotational spectroscopy. A special feature of the chirped-pulse spectrometer design is that it is easily implemented at low frequency (below 8 GHz) where Balle-Flygare type spectrometers with Fabry-Perot cavity designs become technologically challenging due to the mirror size requirements. The capabilities of CP-FTMW spectrometers for studies of molecular structure will be illustrated by the collaborative research effort we have been a part of to determine the structures of water clusters - a project which has identified clusters up to the pentadecamer. A second technology trend that impacts molecular rotational spectroscopy is the development of high power, solid state sources in the mm-wave/THz regions. Results from the field of mm-wave chirped-pulse Fourier transform spectroscopy will be described with an emphasis on new problems in chemical dynamics and analytical chemistry that these methods can tackle. The third (and potentially most important) technological trend is the reduction of microwave components to chip level using monolithic microwave integrated circuits (MMIC) - a technology driven by an enormous mass market in communications. Some recent advances in rotational spectrometer designs that incorporate low-cost components will be highlighted. The challenge to the high-resolution spectroscopy community - as posed by Frank De

    18. Breast cancer: why link early detection to reproductive health interventions in developing countries? Cáncer de mama: ¿por qué integrar la detección temprana con las intervenciones en salud reproductiva en países en vías de desarrollo?

      Directory of Open Access Journals (Sweden)

      Felicia Knaul

      2009-01-01

      Full Text Available Breast cancer has not been sufficiently integrated into broader efforts either on maternal and child, or reproductive health and this presents an opportunity to strengthen early detection. The analysis is based on global breast cancer statistics and a bibliographic review of key global programs and strategies to promote women´s health in the developing world. Breast cancer is a leading cause of cancer deaths in all regions of the developing world and is striking many women during the reproductive phase. There is an opportunity to increase awareness among women and undertake clinical examination to detect breast cancer by linking to existing health interventions related to reproductive and maternal and child health in developing countries. These synergies should be tested and evaluated in developing countries to identify the potential impact on early detection and on reducing the proportion of cases that are found in more advanced stages.Los esfuerzos para integrar el tema de cáncer de mama a los programas dedicados a la salud materna e infantil y a la salud reproductiva han sido insuficientes. Esto representa una oportunidad para fortalecer la detección temprana del cáncer de mama. El análisis se basa en las estadísticas disponibles mundialmente y una revisión bibliográfica sobre los programas claves para promover la salud de la mujer en países en vías de desarrollo. El cáncer de mama es una de las principales causas de muerte por tumores cancerígenos en todas las regiones del mundo en vías de desarrollo y ataca a muchas mujeres durante su etapa reproductiva. Vincular las intervenciones relacionadas con la salud materno-infantil y reproductiva con el cáncer de mama constituye una oportunidad para concientizar a las mujeres y llevar a cabo examen clínico de mama. La posibilidad de aprovechar estas sinergias para impulsar la detección y así reducir la proporción de casos identificados en fases tardías, debe ser probada y

    19. International symposium on NMR spectroscopy

      International Nuclear Information System (INIS)

      The publication consists of 32 papers and presentations from the field of NMR spectroscopy applications submitted to the International Symposium on NMR Spectroscopy held at Smolenice between 29 Sep and 3 Oct, 1980. (B.S.)

    20. Surface-Enhanced Raman Spectroscopy

      Indian Academy of Sciences (India)

      Home; Journals; Resonance – Journal of Science Education; Volume 15; Issue 2. Surface-Enhanced Raman Spectroscopy - Recent Advancement of Raman Spectroscopy. Ujjal Kumar Sur. General Article Volume 15 Issue 2 February 2010 pp 154-164 ...

    1. Ultrabroadband spectroscopy for security applications

      DEFF Research Database (Denmark)

      Engelbrecht, Sunniva; Berge, Luc; Skupin, Stefan

      2015-01-01

      Ultrabroadband spectroscopy is a promising novel approach to overcome two major hurdles which have so far limited the application of THz spectroscopy for security applications: the increased bandwidth enables to record several characteristic spectroscopic features and the technique allows...

    2. Análise computacional da textura de tumores de mama em imagens por ultrassom de pacientes submetidas a cirurgia conservadora Computer-assisted analysis of breast tumors texture on sonographic images of patients submitted to breast-conserving surgery

      Directory of Open Access Journals (Sweden)

      Carolina Maria de Azevedo

      2009-12-01

      Full Text Available OBJETIVO: Avaliar as características de textura de lesões de mama em imagens por ultrassom de pacientes submetidas a cirurgia conservadora que apresentaram, ou não, recidiva. MATERIAIS E MÉTODOS: As imagens de ultrassom de 36 pacientes submetidas a cirurgia conservadora, com 12 tendo apresentado recidiva local e 24 que não apresentaram recidiva no local da cirurgia, foram divididas em: 3 malignas na mama oposta, 7 nódulos benignos, 5 hiperplasias atípicas e 9 alterações fibrocísticas. A textura das lesões foi quantificada utilizando-se dez parâmetros calculados da matriz de coocorrência e da curva de complexidade. Análise discriminante linear foi aplicada aos parâmetros para discriminação de lesões de mama em pacientes submetidas a cirurgia conservadora que apresentaram, ou não, recidiva. RESULTADOS: Avaliando-se a capacidade dos parâmetros em distinguir as recidivas do grupo composto por lesões não recidivas benignas e hiperplasias atípicas, obteve-se especificidade de 100%, com valores de acurácia e sensibilidade superiores a 91%. Num segundo teste, foi possível distinguir as cinco hiperplasias, das lesões não recidivas benignas. CONCLUSÃO: Apesar do número reduzido de casos, os resultados obtidos são encorajadores, sugerindo que o uso da quantificação da textura pode auxiliar na diferenciação entre lesões benignas, hiperplasias atípicas e lesões malignas de origem recidiva.OBJECTIVE: The purpose of this study was to assess the features of breast lesion texture on sonographic images of patients submitted to breast-conserving surgery, with or without tumor recurrence. MATERIALS AND METHODS: Sonographic images of 36 patients submitted to conservative surgery for breast cancer, 12 of them with, and 24 without local recurrence, included 3 contralateral malignant lesions, 7 benign lumps (3 cysts and 4 fibroadenomas, 5 atypical hyperplasias and 9 fibrocystic changes. The quantification of features of breast

    3. Variáveis reprodutivas e risco para doenças benignas de mama: estudo caso-controle Reproductive variables and risk of benign breast diseases: a case-control study

      Directory of Open Access Journals (Sweden)

      Ellen E. Hardy

      1990-10-01

      Full Text Available Foram estudadas 257 mulheres com diagnóstico de doença benigna de mama (DBM, atestado por anatomopatológico ou citologia, e um controle para cada uma delas. Foram apresentados resultados das possíveis relações entre variáveis reprodutivas e o risco para DBM. Os casos e controles foram comparados levando em conta a idade na menarca e na menopausa, o número de gravidezes, de meses em que amamentaram e de ciclos menstruais ovulatórios, e os antecedentes familiares de câncer de mama. Mostraram influência significativa, em relação às DBM, a nuliparidade, aumentando o risco enquanto a idade de 30 ou mais anos no primeiro parto o reduziu; o número de ciclos ovulatórios, que foi significativamente maior para os casos, e a média de meses de uso de pílula, menor entre as mulheres com DBM. O uso de contraceptivos orais apresentou um efeito protetor apenas quando a duração total do uso foi maior que dois anos. Os resultados não se revelaram novos ou diferentes se comparados com outros estudos, mas confirmam a relativa concordância entre os fatores de risco para DBM e para câncer de mama, ainda que as relações entre esses fatores e as DBM não sejam tão claras como o são para o câncer, e existam também algumas discrepâncias.The purpose of the study was the identification of risk factors for benign breast diseases (BBD; 257 women with BBD diagnosed through pathological anatomy or citology and a matched control for each were studied. Subjects were selected at The State University of Campinas Hospital and at a private clinic. To enter the study cases had to have a first diagnosis of BBD between October 1979 and August 1984. The following BBD were considered: dysplasia, fibroadenoma, cystic disease, papilloma and ductal ectasia. Reproductive variables were studied as risk factors, including menstrual ovulatory cycles. The date on which the BBD was diagnosed was defined as the index date. For controls, data were considered up to when

    4. Caracterización estadística del cáncer de mama en la provincia de Pinar del Río Statistical characterization of breast cancer in Pinar del Rio province

      Directory of Open Access Journals (Sweden)

      Pablo González Ruiz

      2010-12-01

      Full Text Available Dentro de las enfermedades no transmisibles que causan cada año una alta mortalidad en la provincia de Pinar del Río, están las provocadas por el cáncer de mama. Esto genera años de vida perdidos por la mortalidad, de ahí que el objetivo sea: reflejar esta situación por municipios entre los años de 2003 al 2009, con el interés de brindar una información adicional y complementaria al Departamento Provincial de Estadística de Salud Pública. Los indicadores promedio de años de vida perdidos y promedio de años de vida vividos reflejan con más claridad esta situación. Los primeros se calcularon a partir de los estimados de esperanza de vida y los segundos, a partir de la suma de las edades de todas las fallecidas en los 7 años entre el total de estas. El cálculo se realizó sobre la base de tablas estadísticas aportadas por el Departamento de Provincial Estadística de Salud Pública, empleando para esto el sistema Microsoft Excel. Se utilizó un estudio longitudinal retrospectivo y descriptivo en los 14 municipios de la provincia. La novedad del estudio amen de lo antes mencionado está en que contempla por cada municipio como se comporta esta situación, sensibilizando al personal de la atención primaria de salud en la detección temprana del cáncer de mama. El cáncer de mama en el período que se analiza tuvo una evolución desfavorable en lo que se refiere a los años de vida saludables perdidos, destacándose el municipio de Pinar del Río.Among non-contagious diseases provoking an annual high mortality rate in Pinar del Rio province are those provoke by breast cancer. The objective of this study was to quantify, for first time- where it had been possible to investigate- the burden associated with breast cancer in Pinar del Rio province, aimed at offering and additional and complementary information to the Provincial Department of Statistics in Public Health. The average years of potential life lost and quality

    5. Qualidade de vida em pacientes sobreviventes de câncer de mama comparada à de mulheres saudáveis Quality of file in breast cancer survivors compared to healthy women

      Directory of Open Access Journals (Sweden)

      Ana Claudia Garabeli Cavalli Kluthcovsky

      2012-10-01

      Full Text Available OBJETIVOS: Avaliar a qualidade de vida em mulheres sobreviventes de câncer de mama e comparar com mulheres saudáveis pareadas por idade. MÉTODOS: Estudo transversal com uma amostra de 199 pacientes sobreviventes de câncer de mama, incluídas consecutivamente um ano ou mais após o diagnóstico. As pacientes haviam sido tratadas em dois grandes hospitais. Essas pacientes foram comparadas com um grupo de mulheres saudáveis, pareadas por idade com as pacientes, composto por funcionárias e voluntárias dos dois hospitais. A avaliação da qualidade de vida foi realizada através do World Health Organization Quality of Life Questionnaire, version bref (WHOQOL-bref, e foram obtidos dados socioeconômicos, clínicos e do tratamento. Os testes estatísticos utilizados foram do χ² e modelo linear generalizado. Foi adotado o nível de significância de 5%. RESULTADOS: As sobreviventes de câncer de mama tinham média de idade de 54,4 anos (DP=10,4 e tempo médio de diagnóstico de 5,0 anos (DP=4,6. As pacientes sobreviventes relataram piores avaliações de qualidade de vida geral (pPURPOSES: To assess the quality of life of breast cancer survivors compared to a sample of age-matched healthy women. METHODS: A cross-sectional design was conducted on 199 consecutive breast cancer survivors, one year or more after diagnosis, treated at two large hospitals. The patients were compared to age-matched healthy women consisting of employees and volunteers of the two hospitals. Quality of life was evaluated using the World Health Organization Quality of Life Questionnaire, version Bref (WHOQOL-bref and socioeconomic, clinical, and treatment data were obtained. The χ² test and a generalized linear model were used for statistical analysis. The adopted level of significance was 5%. RESULTS: The mean age of breast cancer survivors was 54.4 years (SD=10.4 and the average length of time since diagnosis was 5.0 years (SD=4.6. The survivors reported a poorer

    6. Sintomas depressivos no câncer de mama: Inventário de Depressão de Beck - Short Form Depressive symptoms in breast cancer: Beck Depression Inventory - Short Form

      Directory of Open Access Journals (Sweden)

      Renata de Oliveira Cangussu

      2010-01-01

      Full Text Available OBJETIVOS: Verificar a prevalência de sintomas depressivos em mulheres com câncer de mama e identificar os fatores de risco associados à sua ocorrência. MÉTODOS: Foi realizado um estudo transversal, em que foram entrevistadas 71 mulheres com câncer de mama. Foram empregados dois instrumentos: um questionário para verificar os dados sociodemográficos e clínicos e o Inventário de Depressão de Beck - Short Form (BDI-SF, para avaliação dos sintomas depressivos. Para análise dos dados, utilizaram-se medidas descritivas e o teste de qui-quadrado, que avaliou a associação entre variáveis sociodemográficas e clínicas e os sintomas depressivos. O nível de significância considerado foi de 5%. RESULTADOS: A prevalência de sintomas depressivos foi de 29,6%. Os fatores associados à presença desses sintomas foram o tratamento quimioterápico (p = 0,021, presença de dor (p = 0,018 e limitação do movimento do membro superior (p = 0,010 e pior percepção da saúde (p = 0,018. CONCLUSÃO: Sintomas depressivos são frequentes no câncer de mama, assim a saúde mental das mulheres com esse tipo de câncer deve ser investigada e tratada quando necessário, reduzindo o impacto desses sintomas na vida da mulher.OBJECTIVES: To verify the prevalence of depressive symptoms in women with breast cancer and identify risk factors associated to its occurrence. METHODS: It was a transversal study where 71 women with breast cancer were interviewed. Two instruments were applied, being one questionnaire used to verify sociodemographic and clinical data, and the Beck Depression Inventory - Short Form to evaluate depressive symptoms. Descriptive methods and chi-square test were utilized to analyze data, evaluating association between depressive symptoms, sociodemographic and clinical data. Significance level was considered of 5%. RESULTS: Depressive symptoms prevalence was 29,6%. Factors associated to the presence of this kind of symptoms were

    7. Ambiguidade: modo de ser da mulher na prevenção secundária do câncer de mama Ambigüedad: modo de ser de la mujer en la prevención secundaria del cancer de mama Ambiguity: woman's manner of being in the secondary prevention of the breast cancer

      Directory of Open Access Journals (Sweden)

      Maria Carmen Simões Cardoso de Melo

      2012-03-01

      Full Text Available A magnitude do câncer de mama impõe valorizar o saber e agir diante da doença e sua detecção precoce. Neste estudo, de natureza qualitativa, norteado pela fenomenologia e fundado no pensamento teórico-metodológico de Martin Heidegger, buscouse ouvir o ser-mulher-que-pertence-ao-grupo-de-risco-familiar, com o objetivo de analisar compreensivamente seus significados de prevenção secundária. Mediante relação empática e redução de pressupostos, entrevistaram-se 13 mulheres indicadas por suas familiares clientes. A hermenêutica possibilitou a compreensão interpretativa do ser-aí, que mostrou facetas de sua dimensão existencial. Regida pelo falatório e temor, sob o domínio da ambiguidade, não se reconhece como ser de possibilidades. Carece melhor compreensão para movimentar-se para a de-cisão pela prevenção secundária. A construção do conceito de ser e o desvelamento do sentido podem alicerçar a prática assistencial do enfermeiro e favorecer o cuidado singular, integral e humano, que privilegia o ouvir atento ao vivido do ser-mulher, em seu movimento existencial de in-compreensões e indagações.La magnitud del cáncer de mama impone valorar el saber y actuar frente a la enfermedad y su detección precoz. En este estudio, de naturaleza cualitativa, norteado por la fenomenología y fundado en el pensamiento teórico-metodológico de Martin Heidegger, se buscó oír el ser-mujer-que-pertenece-al-grupode-riesgo-familiar, con el objetivo de analizar comprensivamente sus significados de prevención secundaria. Mediante relación empática y reducción de presupuestos, se entrevistaron trece mujeres indicadas por sus familiares clientes. La hermenéutica posibilitó la comprensión interpretativa del ser-ahí, que mostró facetas de su dimensión existencial. Regida por el parlatorio y temor, bajo el dominio de la ambigüedad, no se reconoce como ser de posibilidades. Carece mejor comprensión para moverse para la de

    8. Complicações na rede venosa de mulheres com câncer de mama durante tratamento quimioterápico Complicaciones en la red venosa de mujeres con cáncer de mama durante tratamiento quimioterapéutico Complications in the venous network of women with breast cancer during chemotherapy treatment

      Directory of Open Access Journals (Sweden)

      Elga Zacharias Martins

      2010-01-01

      Full Text Available OBJETIVOS: Identificar as reações da rede venosa, investigar a frequência e as características dessas reações em mulheres com câncer de mama durante o tratamento quimioterápico. MÉTODOS: Foram avaliados 339 prontuários de mulheres submetidas à quimioterapia, de 2003 a 2007. RESULTADOS: Durante os tratamentos neoadjuvantes e adjuvantes 17,1% e 22,4% mulheres apresentaram intercorrências registradas no prontuário, sendo as frequentes: extravasamento, dor e alteração na coloração da pele. As condutas mais citadas na neoadjuvância foram: utilização de compressas frias (2,9% e aplicação de glicocorticoide subcutâneo no local (3,5% e na adjuvância foram: aplicação de hidrocortisona subcutâneo no local (3,2%, aplicação do protocolo de extravasamento (6,2% e utilização de compressas de gelo (7,1%. CONCLUSÃO: O registro das intercorrências e o relato da equipe de enfermagem são essenciais para o acompanhamento dos sítios de punções venosas utilizados durante o tratamento quimioterápico, além de mensuração e registro fotográfico do local.OBJETIVOS: Identificar las reacciones de la red venosa e investigar la frecuencia y las características de esas reacciones en mujeres con cáncer de mama durante el tratamiento quimioterapéutico. MÉTODOS: Fueron evaluadas 339 fichas de mujeres sometidas a quimioterapia, de 2003 a 2007. RESULTADOS: Durante los tratamientos neo-adyuvantes y adyuvantes (17,1% y 22,4% las mujeres presentaron ocurrencias registradas en fichas, siendo las más frecuentes: infiltración externa, dolor y, alteración en la coloración de la piel. Las conductas neo-adyuvantes más citadas fueron: utilización de compresas frías (2,9% y aplicación de glucocorticoide subcutáneo en el local (3,5%, y las adyuvantes fueron: aplicación de hidrocortisona subcutánea en el local (3,2%, aplicación del protocolo de infiltración externa (6,2% y utilización de compresas de hielo (7,1%. CONCLUSIÓN: El

    9. Mid-infrared upconversion spectroscopy

      DEFF Research Database (Denmark)

      Tidemand-Lichtenberg, Peter; Dam, Jeppe Seidelin; Andersen, H. V.

      2016-01-01

      Mid-infrared (MIR) spectroscopy is emerging as an attractive alternative to near-infrared or visible spectroscopy. MIR spectroscopy offers a unique possibility to probe the fundamental absorption bands of a large number of gases as well as the vibrational spectra of complex molecules. In this paper...

    10. Antihydrogen Experiment Gravity Interferometry Spectroscopy

      CERN Multimedia

      Trezzi, D; Dassa, L; Rienacker, B; Khalidova, O; Ferrari, G; Krasnicky, D; Perini, D; Cerchiari, G; Belov, A; Boscolo, I; Sacerdoti, M G; Ferragut, R O; Nedelec, P; Hinterberger, A; Al-qaradawi, I; Malbrunot, C L S; Brusa, R S; Prelz, F; Manuzio, G; Riccardi, C; Fontana, A; Genova, P; Haider, S; Haug, F; Turbabin, A; Castelli, F; Testera, G; Lagomarsino, V E; Doser, M; Penasa, L; Gninenko, S; Cataneo, F; Zenoni, A; Cabaret, L; Comparat, D P; Zmeskal, J; Scampoli, P; Nesteruk, K P; Dudarev, A; Kellerbauer, A G; Mariazzi, S; Carraro, C; Zavatarelli, S M

      The AEGIS experiment (Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy) has the aim of carrying out the first measurement of the gravitational interaction of antimatter to a precision of 1%, by applying techniques from atomic physics, laser spectroscopy and interferometry to a beam of antihydrogen atoms. A further goal of the experiment is to carry out spectroscopy of the antihydrogen atoms in flight.

    11. Predictive factors of breast cancer evaluated by immunohistochemistry Fatores preditivos do câncer de mama avaliados pela imuno-histoqu��mica

      Directory of Open Access Journals (Sweden)

      Helenice Gobbi

      2008-04-01

      Full Text Available Hormone receptor and Her2 protein overexpression evaluated by immunohistochemistry (IHC is widely validated as a predictive factor in breast cancer. The quality of the IHC reaction is influenced by tissue fixation and processing. Over- and underfixation deeply affect IHC results. Antigen retrieval may improve IHC but it does not recover tissue from autolysis or overfixation. The choice of primary antibody for IHC as to its sensitivity and specificity in relation to therapeutic response represents an important stage. Apart from mouse monoclonal antibodies, new rabbit monoclonal antibodies are commercially available, such as clones anti-ER SP1 and B644, anti-PR SP2 and B645 and anti-Her2 SP3 and 4B5. They represent an alternative to hormone receptor and Her2 evaluation by IHC. New polymeric non-biotinylated detection systems are also available and allow accurate and strong marking with no stromal and no non-specific cytoplasmic staining due to endogenous biotin. The most recommended cut off for estrogen and progesterone receptors (ER and PR is more than 1% of positive cells with moderate or strong staining intensity (Allred's scoring system. New guidelines for Her2 evaluation by IHC show a cut off of more than 30% of positive cells with strong intensity (3+ that correlates better with gene amplification. The 2+ cases are now considered indeterminate and should be confirmed by fluorescence in situ hybridisation (FISH or chromogenic in situ hybridisation CISH. A quality control of pre-analytical, analytical and post-analytical phases of IHC is recommended in order to optimize results.A superexpressão de receptores hormonais e Her2 avaliada pela imuno-histoquímica (IHQ é amplamente validada como fator preditivo em câncer de mama. A qualidade da reação imuno-histoquímica é influenciada pela fixação do tecido e seu processamento. A fixação insuficiente ou demasiada afeta profundamente os resultados da IHQ. A reativação antigênica pode

    12. Femtosecond laser spectroscopy

      CERN Document Server

      Hannaford, Peter

      2005-01-01

      As concepts and methodologies have evolved over the past two decades, the realm of ultrafast science has become vast and exciting and has impacted many areas of chemistry, biology and physics, and other fields such as materials science, electrical engineering, and optical communication. The field has recently exploded with the announcement of a series of remarkable new developments and advances. This volume surveys this recent growth in eleven chapters written by leading international researchers in the field. It includes sections on femtosecond optical frequency combs, soft x-ray femtosecond laser sources, and attosecond laser sources. In addition, the contributors address real-time spectroscopy of molecular vibrations with sub-5-fs pulses and multidimensional femtosecond coherent spectroscopies for studying molecular and electron dynamics. Novel methods for measuring and characterizing ultrashort laser pulses and ultrashort pulses of light are also described. The topics covered are revolutionizing the field...

    13. Visible spectroscopy on ASDEX

      International Nuclear Information System (INIS)

      Hofmann, J.V.

      1991-12-01

      In this report visible spectroscopy and impurity investigations on ASDEX are reviewed and several sets of visible spectra are presented. As a basis for identification of metallic impurity lines during plasma discharges spectra from a stainless steel - Cu arc have been recorded. In a next step a spectrum overview of ASDEX discharges is shown which reveals the dominating role of lines from light impurities like carbon and oxygen throughout the UV and visible range (2000 A ≤ λ ≤ 8000 A). Metallic impurity lines of neutrals or single ionized atoms are observed near localized surfaces. The dramatic effect of impurity reduction by boronization of the vessel walls is demonstrated in a few examples. In extension to some ivesti-gations already published, further diagnostic applications of visible spectroscopy are presented. Finally, the hardware and software system used on ASDEX are described in detail. (orig.)

    14. Hadron spectroscopy in LHCb

      CERN Document Server

      Palano, Antimo

      2018-01-01

      The LHCb experiment is designed to study the properties and decays of heavy flavored hadrons produced in pp collisions at the LHC. The data collected in the LHC Run I enables precision spectroscopy studies of beauty and charm hadrons. The latest results on spectroscopy of conventional and exotic hadrons are reviewed. In particular the discovery of the first charmonium pentaquark states in the $J/\\psi p$ system, the possible existence of four-quark states decaying to $J/\\psi \\phi$ and the confirmation of resonant nature of the $Z_c(4430)^−$ mesonic state are discussed. In the sector of charmed baryons, the observation of five new $\\Omega_c$ states, the observation of the $\\Xi^+_{cc}$ and the study of charmed baryons decaying to $D^0 p$ are presented.

    15. Fluorescence fluctuation spectroscopy (FFS)

      CERN Document Server

      Tetin, Sergey

      2012-01-01

      This new volume of Methods in Enzymology continues the legacy of this premier serial with quality chapters authored by leaders in the field. This volume covers fluorescence fluctuation spectroscopy and includes chapters on such topics as Förster resonance energy transfer (fret) with fluctuation algorithms, protein corona on nanoparticles by FCS, and FFS approaches to the study of receptors in live cells. Continues the legacy of this premier serial with quality chapters authored by leaders in the field Covers fluorescence fluctuation spectroscopy Contains chapters on such topics as Förster resonance energy transfer (fret) with fluctuation algorithms, protein corona on nanoparticles by FCS, and FFS approaches to the study of receptors in live cells.

    16. Magnetic resonance spectroscopy

      International Nuclear Information System (INIS)

      Meyerhoff, D.J.; Weiner, M.W.

      1989-01-01

      A major function of the liver is regulation of carbohydrate, lipid, and nitrogen metabolism. Food is absorbed by the intestines and transported to the liver by the portal circulation. Substrates are metabolized and stored in the liver to maintain optimal blood concentrations of glucose and lipids. Ammonia generated in the gastrointestinal tract is converted to urea in the liver by the urea cycle. Various forms of liver disease are associated with disorders of carbohydrate, fat, and nitrogen metabolism. Therefore the ability to characterize liver metabolism noninvasively is of potential diagnostic value. Magnetic resonance spectroscopy (MRS) provides information about tissue metabolism by measuring concentrations of metabolites. However, to determine the anatomic location from which spectroscopic signals are derived, MRS could be performed in conjunction with MRI. This paper summarizes the current experience with spectroscopy ion animal models of human disease and reviews the clinical experience with hepatic MRS to date

    17. Precision muonium spectroscopy

      International Nuclear Information System (INIS)

      Jungmann, Klaus P.

      2016-01-01

      The muonium atom is the purely leptonic bound state of a positive muon and an electron. It has a lifetime of 2.2 µs. The absence of any known internal structure provides for precision experiments to test fundamental physics theories and to determine accurate values of fundamental constants. In particular ground state hyperfine structure transitions can be measured by microwave spectroscopy to deliver the muon magnetic moment. The frequency of the 1s–2s transition in the hydrogen-like atom can be determined with laser spectroscopy to obtain the muon mass. With such measurements fundamental physical interactions, in particular quantum electrodynamics, can also be tested at highest precision. The results are important input parameters for experiments on the muon magnetic anomaly. The simplicity of the atom enables further precise experiments, such as a search for muonium–antimuonium conversion for testing charged lepton number conservation and searches for possible antigravity of muons and dark matter. (author)

    18. Basic Principles of Spectroscopy

      Science.gov (United States)

      Penner, Michael H.

      Spectroscopy deals with the production, measurement, and interpretation of spectra arising from the interaction of electromagnetic radiation with matter. There are many different spectroscopic methods available for solving a wide range of analytical problems. The methods differ with respect to the species to be analyzed (such as molecular or atomic spectroscopy), the type of radiation-matter interaction to be monitored (such as absorption, emission, or diffraction), and the region of the electromagnetic spectrum used in the analysis. Spectroscopic methods are very informative and widely used for both quantitative and qualitative analyses. Spectroscopic methods based on the absorption or emission of radiation in the ultraviolet (UV), visible (Vis), infrared (IR), and radio (nuclear magnetic resonance, NMR) frequency ranges are most commonly encountered in traditional food analysis laboratories. Each of these methods is distinct in that it monitors different types of molecular or atomic transitions. The basis of these transitions is explained in the following sections.

    19. Mössbauer spectroscopy.

      Science.gov (United States)

      Huynh, Boi Hanh

      2011-01-01

      Mössbauer spectroscopy has contributed significantly to the studies of Fe-containing proteins. Early applications yielded detailed electronic characterizations of hemeproteins, and thus enhanced our understanding of the chemical properties of this important class of proteins. The next stage of the applications was marked by major discoveries of several novel Fe clusters of complex structures, including the 8Fe7S P cluster and the mixed metal 1Mo7Fe M center in nitrogenase. Since early 1990 s, rapid kinetic techniques have been used to arrest enzymatic reactions for Mössbauer studies. A number of reaction intermediates were discovered and characterized, both spectroscopically and kinetically, providing unprecedented detailed molecular-level mechanistic information. This chapter gives a brief summary of the historical accounts and a concise description of some experimental and theoretical elements in Mössbauer spectroscopy that are essential for understanding Mössbauer spectra. Major biological applications are summarized at the end.

    20. Spectroscopy of neutral radium

      Energy Technology Data Exchange (ETDEWEB)

      Mol, Aran; De, Subhadeep; Jungmann, Klaus; Wilschut, Hans; Willmann, Lorenz [KVI, University of Groningen, Groningen (Netherlands)

      2008-07-01

      The heavy alkaline earth atoms radium is uniquely sensitive towards parity and time reversal symmetry violations due to a large enhancement of an intrinsic permanent electric dipole moment of the nucleous or the electron. Furthermore, radium is sensitive to atomic parity violation and the nuclear anapole moment. To prepare such experiments spectroscopy of relevant atomic states need to be done. At a later stage we will build a neutral atom trap for radium. We have built an atomic beam of the short lived isotope {sup 225}Ra with a flux of several 10{sup 4} atoms/sec. We are preparing the laser spectroscopy using this beam setup. In the preparation for efficient laser cooling and trapping we have successfully trapped barium, which is similar in it's requirements for laser cooling. The techniques which we have developed with barium can be used to trap rare radium isotopes. We report on the progress of the experiments.