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Sample records for biliverdin ix alpha

  1. Optical Observations of M81 Galaxy Group in Narrow Band [SII] and H_alpha Filters: Holmberg IX

    Directory of Open Access Journals (Sweden)

    Arbutina, B.

    2009-12-01

    Full Text Available We present observations of the nearby tidal dwarf galaxy Holmberg IX in M81 galaxy group in narrow band [SII] and H$alpha$ filters, carried out in March and November 2008 with the 2m RCC telescope at NAO Rozhen, Bulgaria. Our search for resident supernova remnants (identified as sources with enhanced [SII] emission relative to their H$alpha$ emission in this galaxy yielded no sources of this kind, besides M&H 10-11 or HoIX X-1. Nevertheless, we found a number of objects with significant H$alpha$ emission that probably represent uncatalogued HII regions.

  2. The role of biliverdin reductase in colorectal cancer

    International Nuclear Information System (INIS)

    Bauer, M.

    2010-01-01

    In recent years, the effects of biliverdin and bilirubin have been studied extensively, and an inhibitory effect of bile pigments in cancer progression has been proposed. In this study we focused on the effects of biliverdin reductase, the enzyme that converts biliverdin to bilirubin, in colorectal cancer. For in vitro experiments we used a human colorectal carcinoma cell line and transfected it with an expression construct of shRNA specific for biliverdin reductase, to create cells with stable knock-down of enzyme expression. Cell proliferation was analyzed using the CASY model TT cell counting device. Western blot protein analysis was performed to study intracellular signaling cascades. Samples of human colorectal cancer were analyzed using immunohistochemistry. We were able to confirm the antiproliferative effects of bile pigments on cancer cells in vitro. However, this effect was attenuated in biliverdin reductase knock down cells. ERK and Akt activation seen under biliverdin and bilirubin treatment was also reduced in biliverdin reductase deficient cells. Immunohistochemical analysis of tumor samples from patients with colorectal cancer showed elevated biliverdin reductase levels. High enzyme expression was associated with lower overall and disease free patient survival. We conclude that BVR is required for bile pigment mediated effects regarding cancer cell proliferation and modulation of intracellular signaling cascades. The role of BVR overexpression in vivo and its exact influence on cancer progression and patient survival need to be further investigated. (author) [de

  3. Platelets contain releasable coagulation factor IX antigen.

    Science.gov (United States)

    Romp, K G; Monroe, D M; Hoffman, M

    1993-12-01

    Platelets take up plasma proteins into their alpha granules. Platelet activation releases the alpha granule contents. The goal of this study was to test the hypothesis that human platelets also contain some coagulation factor IX in their alpha granules. Platelets were examined by immunofluorescence microscopy. Activated and unactivated platelets were quick frozen on to slides and dehydrated in situ to preserve optimal morphology. The slides were stained by indirect immunofluorescence for factors V and IX. Unactivated platelets showed coarsely granular staining for factor V and finely granular staining for factor IX. Staining for factor V was diffuse after activation, while staining for factor IX disappeared. Thus, the results support the conclusion that platelets contain factor IX which can be released upon activation. Immunoelectron microscopic studies were conducted to more precisely localize the site of the platelet factor IX. As expected, factor V was primarily localized in the alpha granules of unactivated platelets. By contrast, factor IX was observed both in alpha granules and diffusely in the platelet cytoplasm and membrane-bounded vesicles. After activation, staining for both factors V and IX was primarily in the open canalicular system. The physiological importance of this small amount of factor IX is unknown. However, it may be significant since only a few percent of normal IX levels are required to support haemostasis in the absence of trauma, and platelet factor IX could be released at sites of active coagulation.

  4. Biliverdin protects against liver ischemia reperfusion injury in swine.

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    Barbara Andria

    Full Text Available Ischemia reperfusion injury (IRI in organ transplantation remains a serious and unsolved problem. Organs that undergo significant damage during IRI, function less well immediately after reperfusion and tend to have more problems at later times when rejection can occur. Biliverdin has emerged as an agent that potently suppress IRI in rodent models. Since the use of biliverdin is being developed as a potential therapeutic modality for humans, we tested the efficacy for its effects on IRI of the liver in swine, an accepted and relevant pre-clinical animal model. Administration of biliverdin resulted in rapid appearance of bilirubin in the serum and significantly suppressed IRI-induced liver dysfunction as measured by multiple parameters including urea and ammonia clearance, neutrophil infiltration and tissue histopathology including hepatocyte cell death. Taken together, our findings, in a large animal model, provide strong support for the continued evaluation of biliverdin as a potential therapeutic in the clinical setting of transplantation of the liver and perhaps other organs.

  5. A study on eggshell pigmentation: biliverdin in blue-shelled chickens.

    Science.gov (United States)

    Zhao, R; Xu, G Y; Liu, Z Z; Li, J Y; Yang, N

    2006-03-01

    Biliverdin is an important pigment in the eggshell of chickens and other avian species. Determination of the biosynthesis site for biliverdin is essential for understanding the biochemical process and genetic basis of eggshell pigmentation. Either blood or the shell gland could be the biosynthesis site of eggshell biliverdin. A segregation population with full-sib sisters genotyped Oo and oo, which laid blue-shelled eggs and light brown eggs, respectively, was constructed in a native Chinese chicken breed. Ultraviolet spectrophotometry and HPLC were used to determine the biliverdin concentration in eggshells, blood, bile, excreta, and shell gland of both groups of chickens. Biliverdin content was significantly different between egg shells of blue-shelled and brown-shelled chickens (P < 0.01). Blood and bile were tested 3 to 4 h before oviposition, and excreta was tested randomly. Results showed no significant difference in biliverdin concentration in blood, bile, and excreta between the 2 groups. In the shell gland, the biliverdin contents for the blue-shelled and brown-shelled chickens were 8.25 +/- 2.55 and 1.29 +/- 0.12 nmol/g, respectively, which showed a significant difference (P < 0.01). Our results demonstrated that blood is not the biosynthesis site of the shell biliverdin. Biliverdin is most likely synthesized in the shell gland and then deposited onto the eggshell of chickens.

  6. Conversion of biliverdin to bilirubin by biliverdin reductase contributes to endothelial cell protection by heme oxygenase-1-evidence for direct and indirect antioxidant actions of bilirubin.

    Science.gov (United States)

    Jansen, Thomas; Hortmann, Marcus; Oelze, Matthias; Opitz, Benjamin; Steven, Sebastian; Schell, Richard; Knorr, Maike; Karbach, Susanne; Schuhmacher, Swenja; Wenzel, Philip; Münzel, Thomas; Daiber, Andreas

    2010-08-01

    Heme oxygenase-1 (HO-1) is highly protective in various pathophysiological states such as cardiovascular and neurodegenerative diseases. HO-1-derived bilirubin is an efficient scavenger of reactive oxygen and nitrogen species (RONS). It remains to determine whether conversion of biliverdin to bilirubin is an essential step for HO-1-conferred protection of endothelial cells. RONS scavenging activities of biliverdin versus bilirubin were assessed by different RONS generating systems and detection techniques. We also silenced the biliverdin reductase (BVR) or HO-1 gene in cultured primary human endothelial cells (HUVECs) and measured the effect on RONS formation upon stimulation with lipopolysaccharide (LPS). In addition, effects of bilirubin and biliverdin on expression of GTP-cyclohydrolase were assessed in an endothelial cell line (EA.hy 926). HO-1- and BVR-silenced cells have increased levels of oxidative stress and bilirubin but not biliverdin increased expression of the protective protein GTP-cyclohydrolase. Moreover, protection by hemin-induced HO-1 expression or biliverdin-triggered bilirubin formation was impaired upon silencing of the HO-1 or BVR gene, respectively. Since bilirubin significantly scavenged RONS but chronic treatment was even more protective our observations support direct and indirect antioxidant properties of BVR and bilirubin and an important role for BVR and bilirubin in HO-1 conferred protection of endothelial cells.

  7. Interactions between Biliverdin, Oxidative Damage, and Spleen Morphology after Simulated Aggressive Encounters in Veiled Chameleons.

    Directory of Open Access Journals (Sweden)

    Michael W Butler

    Full Text Available Stressors frequently increase oxidative damage--unless organisms simultaneously mount effective antioxidant responses. One putative mitigative mechanism is the use of biliverdin, an antioxidant produced in the spleen during erythrocyte degradation. We hypothesized that both wild and captive-bred male veiled chameleons (Chamaeleo calyptratus, which are highly aggressive to conspecifics, would respond to agonistic displays with increased levels of oxidative damage, but that increased levels of biliverdin would limit this increase. We found that even just visual exposure to a potential combatant resulted in decreased body mass during the subsequent 48-hour period, but that hematocrit, biliverdin concentration in the bile, relative spleen size, and oxidative damage in plasma, liver, and spleen were unaffected. Contrary to our predictions, we found that individuals with smaller spleens exhibited greater decreases in hematocrit and higher bile biliverdin concentrations, suggesting a revision to the idea of spleen-dependent erythrocyte processing. Interestingly, individuals with larger spleens had reduced oxidative damage in both the liver and spleen, demonstrating the spleen's importance in modulating oxidative damage. We also uncovered differences in spleen size and oxidative damage between wild and captive-bred chameleons, highlighting environmentally dependent differences in oxidative physiology. Lastly, we found no relationship between oxidative damage and biliverdin concentration, calling into question biliverdin's antioxidant role in this species.

  8. Heme oxygenase/carbon monoxide-biliverdin pathway may be involved in the antinociceptive activity of etoricoxib, a selective COX-2 inhibitor.

    Science.gov (United States)

    Grangeiro, Niedja M G; Aguiar, Jordana A; Chaves, Hellíada V; Silva, Antonio A R; Lima, Vilma; Benevides, Norma M B; Brito, Gerly A C; da Graça, José R V; Bezerra, Mirna M

    2011-01-01

    The aim of this study was to assess the interaction between the heme oxygenase-1/ biliverdin/carbon monoxide (HO-1/BVD/CO) and cyclooxygenase-2 (COX-2) pathways in the writhing test. Mice were pretreated with 0.1, 1 or 10 mg/kg, ip etoricoxib, a selective COX-2 inhibitor, or with one of the following HO-1/BVD/CO pathway modulators: 1, 3 or 9 mg/kg, sc ZnPP IX, a specific HO-1 inhibitor, 0.3, 1 or 3 mg/kg, sc hemin, a substrate of the HO-1/BVD/CO pathway; or 0.00025, 0.025 or 2.5 μmol/kg, sc DMDC, a CO donor. Mice pretreated with etoricoxib or one of the HO-1/BVD/CO pathway modulators received an injection of acetic acid (ip) after 30 and 60 min, respectively. Next, the number of writhes was quantified between 0 and 30 min after stimulus injection. In another series of experiments, ineffective doses of etoricoxib were co-administered with hemin or DMDC and an effective dose of etoricoxib with ZnPP IX, followed by an acetic acid injection. Four hours after the acetic acid injection, levels of bilirubin, which is a product of BVD conversion by the BVD reductase enzyme, in the peritoneal lavage were determined. Hemin or DMDC reduced (pZnPP IX potentiated (pZnPP IX. Pretreatment with ZnPP IX reduced bilirubin levels, but etoricoxib pretreatment significantly increased the bilirubin concentration in peritoneal exudates. The data obtained from these experiments showed that the HO-1/BVD/CO pathway was activated in the acetic acid-induced abdominal writhing model. The analgesic effect of etoricoxib was at least partially dependent on the participation of the HO-1/BVD/CO pathway.

  9. Title IX Resource Guide

    Science.gov (United States)

    Office for Civil Rights, US Department of Education, 2015

    2015-01-01

    Title IX of the Education Amendments of 1972 (Title IX) prohibits discrimination based on sex in education programs and activities in federally funded schools at all levels. If any part of a school district or college receives any Federal funds for any purpose, all of the operations of the district or college are covered by Title IX. The essence…

  10. Identification of Genes for Synthesis of the Blue Pigment, Biliverdin IXα, in the Blue Coral Heliopora coerulea.

    Science.gov (United States)

    Hongo, Yuki; Yasuda, Nina; NagaI, Satoshi

    2017-04-01

    Heliopora coerulea is the only species in the subclass Octocorallia that has a crystalline aragonite skeleton. The skeleton has been reported to contain the blue pigment, biliverdin IXα, which is formed by heme oxygenase (HO) during heme decomposition. There is little information regarding gene expression in H. coerulea; therefore, the biosynthesis pathway for biliverdin IXα is poorly understood. To identify the genes related to heme synthesis and degradation, metatranscripts of H. coerulea and its symbiont Symbiodinium spp. were sequenced and separated from the host- and symbiont-derived sequences. From the metatranscriptome analyses, all genes for heme synthesis and three HOs were isolated from the host and symbiont. From our phylogenetic and amino acid analysis, we noted that one of the HO isoforms in the host coral was predicted to possess HO activity. However, biliverdin reductase, which reduces biliverdin to bilirubin, was not identified in the present study. Similarly, biliverdin reductase was not identified in the transcripts of the red coral Corallium rubrum, a species that also belongs to Octocorallia. However, genes related to heme synthesis and HO were found in C. rubrum. We speculate that Heliopora coerulea can produce biliverdin and accumulate it in the skeleton, while red corals and other Octocorallia species cannot. Further information from molecular studies of H. coerulea will provide insights into the synthesis of biliverdin IXα, the blue pigment in the hard crystalline aragonite skeleton, and will be fundamental to future ecological and physiological studies.

  11. Direct antioxidant properties of bilirubin andbiliverdin. Is there a role for biliverdin reductase?

    Directory of Open Access Journals (Sweden)

    Thomas eJansen

    2012-03-01

    Full Text Available Reactive oxygen species (ROS and signaling events are involved in the pathogenesis of endothelial dysfunction and represent a major contribution to vascular regulation. Molecular signaling is highly dependent on reactive oxygen species. But depending on the amount of ROS production it might have toxic or protective effects. Despite a large number of negative outcomes in large clinical trials (e.g. HOPE, HOPE-TOO, antioxidant molecules and agents are important players to influence the critical balance between production and elimination of RONS. However, chronic systemic antioxidant therapy lacks clinical efficacy, probably by interfering with important physiological redox signaling pathways. Therefore, it may be a much more promising attempt to induce intrinsic antioxidant pathways in order to increase the antioxidants not systemically but at the place of oxidative stress and complications. Among others, heme oxygenase (HO has been shown to be important for attenuating the overall production of ROS in a broad range of disease states through its ability to degrade heme and to produce carbon monoxide (CO, biliverdin/bilirubin, and the release of free iron with subsequent ferritin induction. With the present review we would like to highlight the important antioxidant role of the heme oxygenase system and especially discuss the contribution of the biliverdin, bilirubin and biliverdin reductase to these beneficial effects. The bilierdin reductase was reported to confer an antioxidant redox amplification cycle by which low, physiological bilirubin concentrations confer potent antioxidant protection via recycling of biliverdin from oxidized bilirubin by the biliverdin reductase, linking this sink for oxidants to the NADPH pool. To date the existence and role of this antioxidant redox cycle is still under debate and we present and discuss the pros and cons as well as our own findings on this topic.

  12. Embryonic chicken cornea and cartilage synthesize type IX collagen molecules with different amino-terminal domains.

    OpenAIRE

    Svoboda, K K; Nishimura, I; Sugrue, S P; Ninomiya, Y; Olsen, B R

    1988-01-01

    We have analyzed embryonic chicken cornea for the presence of type IX collagen mRNA and protein. Using RNA transfer blot analysis, we demonstrate that alpha 1(IX) and alpha 2(IX) mRNAs are expressed by corneal epithelial cells at the time that the primary stromal components are synthesized. The levels of the mRNAs decrease with increasing developmental age and are barely detectable at day 11 of development. In contrast, type IX collagen protein is detectable by immunofluorescence at days 5 an...

  13. Inactivation of Dengue and Yellow Fever viruses by heme, cobalt-protoporphyrin IX and tin-protoporphyrin IX.

    Science.gov (United States)

    Assunção-Miranda, I; Cruz-Oliveira, C; Neris, R L S; Figueiredo, C M; Pereira, L P S; Rodrigues, D; Araujo, D F F; Da Poian, A T; Bozza, M T

    2016-03-01

    To investigate the effect of heme, cobalt-protoporphyrin IX and tin-protoporphyrin IX (CoPPIX and SnPPIX), macrocyclic structures composed by a tetrapyrrole ring with a central metallic ion, on Dengue Virus (DENV) and Yellow Fever Virus (YFV) infection. Treatment of HepG2 cells with heme, CoPPIX and SnPPIX after DENV infection reduced infectious particles without affecting viral RNA contents in infected cells. The reduction of viral load occurs only with the direct contact of DENV with porphyrins, suggesting a direct effect on viral particles. Previously incubation of DENV and YFV with heme, CoPPIX and SnPPIX resulted in viral particles inactivation in a dose-dependent manner. Biliverdin, a noncyclical porphyrin, was unable to inactivate the viruses tested. Infection of HepG2 cells with porphyrin-pretreated DENV2 results in a reduced or abolished viral protein synthesis, RNA replication and cell death. Treatment of HepG2 or THP-1 cell lineage with heme or CoPPIX after DENV infection with a very low MOI resulted in a decreased DENV replication and protection from death. Heme, CoPPIX and SnPPIX possess a marked ability to inactivate DENV and YFV, impairing its ability to infect and induce cytopathic effects on target cells. These results open the possibility of therapeutic application of porphyrins or their use as models to design new antiviral drugs against DENV and YFV. © 2016 The Society for Applied Microbiology.

  14. A homozygous nonsense mutation (c.214C->A) in the biliverdin reductase alpha gene (BLVRA) results in accumulation of biliverdin during episodes of cholestasis

    DEFF Research Database (Denmark)

    Nytofte, Nikolaj S; Serrano, Maria A; Monte, Maria J

    2011-01-01

    Green jaundice is a rare finding usually associated with end-stage liver disease. OBJECTIVE The authors investigated two unrelated Inuit women from different geographical areas in Greenland who had episodes of green jaundice associated with biliary obstruction.......Green jaundice is a rare finding usually associated with end-stage liver disease. OBJECTIVE The authors investigated two unrelated Inuit women from different geographical areas in Greenland who had episodes of green jaundice associated with biliary obstruction....

  15. In vitro characterization of high purity factor IX concentrates for the treatment of hemophilia B.

    Science.gov (United States)

    Limentani, S A; Gowell, K P; Deitcher, S R

    1995-04-01

    This study employed sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis and immunoblotting to assess the purity of seven high purity factor IX concentrates: Aimafix (Aima), AlphaNine-SD (Alpha Therapeutic), Factor IX VHP (Biotransfusion), Immunine (Immuno), Mononine (Armour Pharmaceutical), Nanotiv (Kabi Pharmacia), and 9MC (Blood Products Laboratory). The mean specific activity of these products ranged from 68 U factor IX/mg (Aimafix) to 246 U factor IX/mg (Mononine). SDS-PAGE analysis showed that the highest purity product, Mononine, had a single contaminating band under non-reducing conditions. Two additional bands were detected when this product was analyzed under reducing conditions. All other products had multiple contaminating bands that were more apparent under reducing than non-reducing conditions. The immunoblot for factor IX showed a dominant factor IX band for all products. In addition, visible light chain of factor IX was detected for AlphaNine-SD, Factor IX VHP, Immunine, Mononine, Nanotiv, and 9MC, suggesting that the factor IX in these products had undergone partial activation to factor IXa. Another contaminating band was visible at 49,500 for all of the products except 9MC. In addition to this band, high molecular weight contaminants were apparent for some products, most notably AlphaNine-SD. The identity of these bands is unknown. Immunoblotting failed to demonstrate factor VII as a contaminant of any of the high purity products, although factor VIIa could be detected in some lots of Immunine, Nanotiv, and 9MC by a clot-based assay. Factor X contaminated Aimafix, AlphaNine-SD, Factor IX VHP, Immunine, Nanotiv, and 9MC, but activation products of factor X were not detected.(ABSTRACT TRUNCATED AT 250 WORDS)

  16. Eggshell Biliverdin and Protoporphyrin Pigments in a Songbird: Are They Derived from Erythrocytes, Blood Plasma, or the Shell Gland?

    Science.gov (United States)

    Hargitai, Rita; Boross, Nóra; Hámori, Susanne; Neuberger, Eszter; Nyiri, Zoltán

    Biliverdin and protoporphyrin pigments are deposited into the eggshell when the developing egg is in the shell gland. However, the site of synthesis of eggshell pigments is still uncertain, although it may influence the possible costs and potential functions of eggshell coloration in avian species. Eggshell pigments may be derived from red blood cells or be produced in other organs and then transferred to the shell gland, or they may be synthesized de novo in the shell gland. We studied in the canary (Serinus canaria) whether eggshell blue-green and brown pigmentations are associated with experimentally elevated anemia, female hematocrit level, immature erythrocyte percentage, and feces and plasma pigment levels during egg laying to find out the possible origin of eggshell pigments. We found no significant effects of hematocrit level or experimentally elevated anemia on intensity of eggshell blue-green and brown pigmentations; therefore, we consider it less likely that eggshell pigments are derived from erythrocytes. In addition, we found no significant associations between female feces biliverdin concentration during egg laying and intensity of eggshell blue-green pigmentation, suggesting that eggshell biliverdin may not originate from the spleen or liver. We found a negative association between plasma and feces protoporphyrin concentrations during egg laying and eggshell brown chroma. This result suggests that an increased production of protoporphyrin in the liver, which could have elevated plasma and feces protoporphyrin concentrations, could inhibit eggshell protoporphyrin pigmentation, probably through affecting enzymatic activities. We suggest that both pigments are produced de novo in the shell gland in the canary, but circulating pigment levels may influence shell gland pigment synthesis, thus connecting the physiological status of the female to eggshell coloration.

  17. Platelet Glycoprotein Ib-IX and Malignancy

    Science.gov (United States)

    2010-09-01

    whether adjunct anti-GP Ib-IX therapy could benefit the breast cancer patient with malignant disease. Body Below we list the 3 Specific Aims from our...Platelet Glycoprotein Ib-IX and Malignancy PRINCIPAL INVESTIGATOR: Jerry Ware, Ph.D...AND SUBTITLE Platelet Glycoprotein Ib-IX and Malignancy 5a. CONTRACT NUMBER 5b. GRANT NUMBER W81XWH-08-1-0576 5c

  18. Synthesis of indium-111 mesoprotoporphyrin IX

    International Nuclear Information System (INIS)

    Lee, K.M.; Marshall, A.G.

    1981-01-01

    Indium-111 mesoprotoporphyrin IX has been prepared by refluxing suitable proportions of InCl 3 , sodium acetate, and mesoprotoporphyrin IX in glacial acetic acid. The labeled metalloporphyrin is sufficiently water-soluble for use as a scanning agent, and can also be incorporated into heme apoproteins for perturbed gamma-gamma angular correlation measurements. (author)

  19. Intersex (ix) mutations of Drosophila melanogaster cause ...

    Indian Academy of Sciences (India)

    In Drosophila melanogaster, the intersex (ix) is a terminally positioned gene in somatic sex determination hierarchy and function with the female specific product of double sex (DSXF) to implement female sexual differentiation. The null phenotype of ix is to transform diplo-X individuals into intersexes while leaving haplo-X ...

  20. Glycoprotein Ib and glycoprotein IX in human platelets are acylated with palmitic acid through thioester linkages

    International Nuclear Information System (INIS)

    Muszbek, L.; Laposata, M.

    1989-01-01

    The glycoprotein (GP) Ib-IX complex is a major component of the platelet membrane which mediates adhesion of platelets to exposed subendothelium. GP Ib is a heterodimer with a large alpha chain (Mr = 135,000-145,000) and small beta chain (Mr = 22,000-27,000) linked by a disulfide bond(s). GP Ib is bound in a noncovalent 1:1 complex with GP IX (Mr = 17,000-22,000). We labeled isolated human platelets with [3H] palmitate or surface-labeled platelet membrane glycoproteins with sodium periodate-[3H]sodium borohydride and immunoprecipitated the GP Ib-IX complex from radiolabeled platelet lysates using a mouse monoclonal antibody (SZ.1) which recognizes the intact complex. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis and fluorography of immunoprecipitates from [3H]palmitate-labeled platelets revealed two radiolabeled bands under reducing conditions at 24 and 19 kDa and two bands under nonreducing conditions at 170 and 19 kDa. As demonstrated by the parallel analysis of immunoprecipitates from periodate-[3H]sodium borohydride-labeled platelets, the [3H]palmitate-labeled bands obtained under reducing conditions corresponded to GP Ib beta and GP IX and the ones obtained under nonreducing conditions to intact GP Ib and GP IX, respectively. Using alkaline methanolysis followed by high pressure liquid chromatography analysis of the methanolysis products, we demonstrated that the radioactivity associated with the GP Ib-IX complex from [3H]palmitate-labeled platelets was, in fact, covalently bound [3H]palmitate in ester linkage to protein. The protein-fatty acid linkage was also disrupted by hydroxylamine at neutral pH. Thus, this study demonstrates that GP Ib beta and GP IX in human platelets are both fatty acid-acylated with palmitate through thioester linkages

  1. Yolk pigments of the Mexican leaf frog.

    Science.gov (United States)

    Marinetti, G V; Bagnara, J T

    1983-02-25

    Eggs of the Mexican leaf frog contain blue and yellow pigments identified as biliverdin and lutein, respectively. Both pigments are bound to proteins that occur in crystalline form in the yolk platelet. The major blue pigment is biliverdin IX alpha. The eggs vary in color from brilliant blue to pale yellow-green depending on the amount of each pigment. These pigments may provide protective coloration to the eggs.

  2. eEF1A1 binds and enriches protoporphyrin IX in cancer cells in 5-aminolevulinic acid based photodynamic therapy

    Science.gov (United States)

    Fan, Zhichao; Cui, Xiaojun; Wei, Dan; Liu, Wei; Li, Buhong; He, Hao; Ye, Huamao; Zhu, Naishuo; Wei, Xunbin

    2016-05-01

    Photodynamic therapy (PDT) with protoporphyrin IX (PpIX), which is endogenously derived from 5-aminolevulinic acid (5-ALA) or its derivatives, is a promising modality for the treatment of both pre-malignant and malignant lesions. However, the mechanisms of how ALA-induced PpIX selectively accumulated in the tumors are not fully elucidated. Here we discovered that eukaryotic translation elongation factor 1 alpha 1 (eEF1A1) interacted with PpIX (with an affinity constant of 2.96 × 106 M-1). Microscopy imaging showed that ALA-induced PpIX was co-localized with eEF1A1 in cancer cells. eEF1A1 was found to enrich ALA-induced PpIX in cells by competitively blocking the downstream bioavailability of PpIX. Taken together, our study discovered eEF1A1 as a novel photosensitizer binding protein, which may play an essential role in the enrichment of ALA-induced PpIX in cancer cells during PDT. These suggested eEF1A1 as a molecular marker to predict the selectivity and efficiency of 5-ALA based PDT in cancer therapy.

  3. El Titulo IX y La Discriminacion por Sexo (Title IX and Sex Discrimination).

    Science.gov (United States)

    Office for Civil Rights (ED), Washington, DC.

    Title IX of the Education Amendments of 1972 protects people from discrimination based on sex in education programs or activities that receive Federal financial assistance. This brochure outlines the responsibilities of education programs and activities covered by Title IX, the responsibilities of the Office for Civil Rights (OCR) in enforcing…

  4. Protoporphyrin IX and oxidative stress.

    Science.gov (United States)

    Afonso, S; Vanore, G; Batlle, A

    1999-09-01

    The short- and long-term pro-oxidant effect of protoporphyrin IX (PROTO) administration to mice was studied in liver. A peak of liver porphyrin accumulation was found 2 h after the injection of PROTO (3.5 mg/kg, i.p.); then the amount of porphyrins diminished due to biliar excretion. After several doses of PROTO (1 dose every 24 h up to 5 doses) a sustained enhancement of liver porphyrins was observed. The activity of delta-aminolevulinic acid synthetase was induced 70-90% over the control values 4 h after the first injection of PROTO and stayed at these high levels throughout the period of the assay. Administration of PROTO induced rapid liver damage, involving lipid peroxidation. Hepatic GSH content was increased 2h after the first injection of PROTO, but then decreased below the control values which were maintained after several doses of porphyrin. After a single dose of PROTO, Cu-Zn superoxide dismutase (SOD) was rapidly induced, suggesting that superoxide radicals had been generated. Increased levels of hydrogen peroxide coming from the reaction catalyzed by SOD and lipid peroxides as a consequence of membrane peroxidation, induced the activity of catalase and glutathione peroxidase (GPx), while decreased GSH levels induced glutathione reductase (GRed) activity. However after 5 doses of PROTO, the activity of SOD was reduced reaching control values. GPx and catalase activities slowly went down, while GRed continued increasing as long as the levels of GSH were kept very low. TBARS values, although lower than those observed after a single dose of PROTO, remained above control values; Glutathione S-transferase activity was instead greatly diminished, indicating sustained liver damage. Our findings would indicate that accumulation of PROTO in liver induces oxidative stress, leading to rapid increase in the activity of the antioxidant enzymes to avoid or revert liver damage. However, constant accumulation of porphyrins provokes a liver damage so severe that the

  5. Characterization of heme oxygenase and biliverdin reductase gene expression in zebrafish (Danio rerio): Basal expression and response to pro-oxidant exposures.

    Science.gov (United States)

    Holowiecki, Andrew; O'Shields, Britton; Jenny, Matthew J

    2016-11-15

    While heme is an important cofactor for numerous proteins, it is highly toxic in its unbound form and can perpetuate the formation of reactive oxygen species. Heme oxygenase enzymes (HMOX1 and HMOX2) degrade heme into biliverdin and carbon monoxide, with biliverdin subsequently being converted to bilirubin by biliverdin reductase (BVRa or BVRb). As a result of the teleost-specific genome duplication event, zebrafish have paralogs of hmox1 (hmox1a and hmox1b) and hmox2 (hmox2a and hmox2b). Expression of all four hmox paralogs and two bvr isoforms were measured in adult tissues (gill, brain and liver) and sexually dimorphic differences were observed, most notably in the basal expression of hmox1a, hmox2a, hmox2b and bvrb in liver samples. hmox1a, hmox2a and hmox2b were significantly induced in male liver tissues in response to 96h cadmium exposure (20μM). hmox2a and hmox2b were significantly induced in male brain samples, but only hmox2a was significantly reduced in male gill samples in response to the 96h cadmium exposure. hmox paralogs displayed significantly different levels of basal expression in most adult tissues, as well as during zebrafish development (24 to 120hpf). Furthermore, hmox1a, hmox1b and bvrb were significantly induced in zebrafish eleutheroembryos in response to multiple pro-oxidants (cadmium, hemin and tert-butylhydroquinone). Knockdown of Nrf2a, a transcriptional regulator of hmox1a, was demonstrated to inhibit the Cd-mediated induction of hmox1b and bvrb. These results demonstrate distinct mechanisms of hmox and bvr transcriptional regulation in zebrafish, providing initial evidence of the partitioning of function of the hmox paralogs. Copyright © 2016 Elsevier Inc. All rights reserved.

  6. Protoporphyrin IX-induced structural and functional changes in ...

    Indian Academy of Sciences (India)

    Protoporphyrin IX and its derivatives are used as photosensitizers in the photodynamic therapy of cancer. Protoporphyrin IX penetrates into human red blood cells and releases oxygen from them. This leads to a change in the morphology of the cells. Spectrophotometric studies reveal that protoporphyrin IX interacts with ...

  7. Title IX: With New Opportunities, Girls' Interest Rises

    Science.gov (United States)

    Toporek, Bryan

    2012-01-01

    On June 23, 1972, President Richard M. Nixon signed into law Title IX of the Education Amendments of 1972, which prohibits gender discrimination in any federally financed education program or activity. Title IX is far-reaching, but the law is most often associated with school and college athletics. Title IX allows schools to prove their athletic…

  8. 77 FR 64401 - Order of Succession for HUD Region IX

    Science.gov (United States)

    2012-10-19

    ... DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT [FR-5550-D-12] Order of Succession for HUD Region IX... Field Offices (Region IX). This Order of Succession supersedes all previous Orders of Succession for HUD Region IX. DATES: Effective Date: October 9, 2012. FOR FURTHER INFORMATION CONTACT: Lawrence D. Reynolds...

  9. Title IX--A Modest Success.

    Science.gov (United States)

    Abrams, Mary

    1982-01-01

    Title IX has helped bring change to discriminatory policies and practices including curriculum options, activities, sports, and changes in vocational education. It is argued that students need to see women and men in a broad range of positions in order to broaden their concept of potential careers for themselves. (MLW)

  10. Cranial Nerves IX, X, XI, and XII

    OpenAIRE

    Gillig, Paulette Marie; Sanders, Richard D.

    2010-01-01

    This article concludes the series on cranial nerves, with review of the final four (IX–XII). To summarize briefly, the most important and common syndrome caused by a disorder of the glossopharyngeal nerve (craniel nerve IX) is glossopharyngeal neuralgia. Also, swallowing function occasionally is compromised in a rare but disabling form of tardive dyskinesia called tardive dystonia, because the upper motor portion of the glossopharyngel nerve projects to the basal ganglia and can be affected b...

  11. Cranial Nerves IX, X, XI, and XII.

    Science.gov (United States)

    Gillig, Paulette Marie; Sanders, Richard D

    2010-05-01

    This article concludes the series on cranial nerves, with review of the final four (IX-XII). To summarize briefly, the most important and common syndrome caused by a disorder of the glossopharyngeal nerve (craniel nerve IX) is glossopharyngeal neuralgia. Also, swallowing function occasionally is compromised in a rare but disabling form of tardive dyskinesia called tardive dystonia, because the upper motor portion of the glossopharyngel nerve projects to the basal ganglia and can be affected by lesions in the basal ganglia. Vagus nerve funtion (craniel nerve X) can be compromised in schizophrenia, bulimia, obesity, and major depression. A cervical lesion to the nerve roots of the spinal accessory nerve (craniel nerve XI) can cause a cervical dystonia, which sometimes is misdiagnosed as a dyskinesia related to neuroleptic use. Finally, unilateral hypoglossal (craniel nerve XII) nerve palsy is one of the most common mononeuropathies caused by brain metastases. Supranuclear lesions of cranial nerve XII are involved in pseudobulbar palsy and ALS, and lower motor neuron lesions of cranial nerve XII can also be present in bulbar palsy and in ALS patients who also have lower motor neuron involvement. This article reviews these and other syndromes related to cranial nerves IX through XII that might be seen by psychiatry.

  12. Very high-density lipoprotein and vitellin as carriers of novel biliverdins IXα with a farnesyl side-chain presumably derived from heme A in Spodoptera littoralis.

    Science.gov (United States)

    Kayser, Hartmut; Nimtz, Manfred; Ringler, Philippe; Müller, Shirley A

    2016-01-01

    Bilins in complex with specific proteins play key roles in many forms of life. Biliproteins have also been isolated from insects; however, structural details are rare and possible functions largely unknown. Recently, we identified a high-molecular weight biliprotein from a moth, Cerura vinula, as an arylphorin-type hexameric storage protein linked to a novel farnesyl biliverdin IXα; its unusual structure suggests formation by cleavage of mitochondrial heme A. In the present study of another moth, Spodoptera littoralis, we isolated two different biliproteins. These proteins were identified as a very high-density lipoprotein (VHDL) and as vitellin, respectively, by mass spectrometric sequencing. Both proteins are associated with three different farnesyl biliverdins IXα: the one bilin isolated from C. vinula and two new structurally closely related bilins, supposed to be intermediates of heme A degradation. The different bilin composition of the two biliproteins suggests that the presumed oxidations at the farnesyl side-chain take place mainly during egg development. The egg bilins are supposedly transferred from hemolymph VHDL to vitellin in the female. Both biliproteins show strong induced circular dichroism activity compatible with a predominance of the M-conformation of the bilins. This conformation is opposite to that of the arylphorin-type biliprotein from C. vinula. Electron microscopy of the VHDL-type biliprotein from S. littoralis provided a preliminary view of its structure as a homodimer and confirmed the biochemically determined molecular mass of ∼350 kDa. Further, images of S. littoralis hexamerins revealed a 2 × 3 construction identical to that known from the hexamerin from C. vinula. Copyright © 2015 Elsevier Ltd. All rights reserved.

  13. Protoporphyrin IX in the skin measured noninvasively predicts photosensitivity in patients with erythropoietic protoporphyria

    DEFF Research Database (Denmark)

    Heerfordt, I M; Wulf, H C

    2016-01-01

    and to investigate how skin PpIX relates to erythrocyte PpIX and photosensitivity. METHODS: Skin PpIX was measured in 25 patients with EPP by calculating the difference in PpIX fluorescence before and after complete photobleaching of PpIX using controlled illumination. The patients reported symptoms during...

  14. Evaluation of factor IX deficiency by interdigitated electrode (IDE)

    Science.gov (United States)

    Gopinath, Subash C. B.; Hashim, Uda; Uda, M. N. A.

    2017-03-01

    Factor IX deficiency is the main cause of hemophilia A and B. This a severe excessive bleeding disorder that can even kill the patient if not treated with the right prescription of Factor IX hormone to stop the bleeding. The bleeding can be caused by an injury or even a sudden bleeding in some very rare cases. To find the Factor IX effectiveness and to understand the deficiency more carefully for the future of medicine, experiments are conducted to test the Factor IX using the Interdigitated Electrode (IDE) and gold Nanoparticle with the help of Nanoelectrical technology.

  15. Carbonic anhydrase IX (CA IX) mediates tumor cell interactions with microenvironment

    Czech Academy of Sciences Publication Activity Database

    Závadová, Zuzana; Závada, Jan

    2005-01-01

    Roč. 13, č. 5 (2005), s. 977-982 ISSN 1021-335X R&D Projects: GA ČR(CZ) GA203/02/0405 Institutional research plan: CEZ:AV0Z50520514 Keywords : carbonic anhydrase IX * cell adhesion * microenvironment Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 1.572, year: 2005

  16. 34 CFR Subject Index to Title Ix... - Subject Index to Title IX Preamble and Regulation 1

    Science.gov (United States)

    2010-07-01

    ... SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Procedures [Interim...) Physical education, [43, 56, 58]; Sex education, [43, 57]; 106.34(e) Coverage, [5]; 106.11 to 106.17... 34 Education 1 2010-07-01 2010-07-01 false Subject Index to Title IX Preamble and Regulation 1...

  17. Three distinct point mutations in the factor IX gene of three Japanese CRM+ hemophilia B patients (factor IX BMNagoya 2, factor IX Nagoya 3 and 4).

    Science.gov (United States)

    Hamaguchi, M; Matsushita, T; Tanimoto, M; Takahashi, I; Yamamoto, K; Sugiura, I; Takamatsu, J; Ogata, K; Kamiya, T; Saito, H

    1991-05-06

    Enzymatic DNA amplification and complete sequence analysis were used to investigate human factor IX coding sequences in three CRM+ hemophilia B patients. In a patient with severe hemophilia B and a markedly prolonged ox-brain prothrombin time, a C to T transition in exon VI changed the codon for Arg180 to Trp (factor IX BMNagoya 2). This mutation would impair the cleavage by factor XIa required for activation of the zymogen. In a patient with mild hemophilia B, a G to A transition in exon VI changed the codon for Arg145 to His(factor IX Nagoya 3). This substitution also would be predicted to preclude the cleavage of factor IX by factor XIa at this peptide bond (Arg145-Ala146). Furthermore, this point mutation creates a new NlaIII restriction site which provides a quick and reliable method for carrier detection in the affected family members. A patient with severe hemophilia B (factor IX Nagoya 4) had a G to A transition in exon II changing the codon for Glu21 to Lys. This novel point mutation is assumed to impair the function of factor IX by disrupting the calcium binding of factor IX.

  18. Ares I-X Ground Diagnostic Prototype

    Science.gov (United States)

    Schwabacher, Mark A.; Martin, Rodney Alexander; Waterman, Robert D.; Oostdyk, Rebecca Lynn; Ossenfort, John P.; Matthews, Bryan

    2010-01-01

    The automation of pre-launch diagnostics for launch vehicles offers three potential benefits: improving safety, reducing cost, and reducing launch delays. The Ares I-X Ground Diagnostic Prototype demonstrated anomaly detection, fault detection, fault isolation, and diagnostics for the Ares I-X first-stage Thrust Vector Control and for the associated ground hydraulics while the vehicle was in the Vehicle Assembly Building at Kennedy Space Center (KSC) and while it was on the launch pad. The prototype combines three existing tools. The first tool, TEAMS (Testability Engineering and Maintenance System), is a model-based tool from Qualtech Systems Inc. for fault isolation and diagnostics. The second tool, SHINE (Spacecraft Health Inference Engine), is a rule-based expert system that was developed at the NASA Jet Propulsion Laboratory. We developed SHINE rules for fault detection and mode identification, and used the outputs of SHINE as inputs to TEAMS. The third tool, IMS (Inductive Monitoring System), is an anomaly detection tool that was developed at NASA Ames Research Center. The three tools were integrated and deployed to KSC, where they were interfaced with live data. This paper describes how the prototype performed during the period of time before the launch, including accuracy and computer resource usage. The paper concludes with some of the lessons that we learned from the experience of developing and deploying the prototype.

  19. Ares I-X Ground Diagnostic Prototype

    Science.gov (United States)

    Schwabacher, Mark; Martin, Rodney; Waterman, Robert; Oostdyk, Rebecca; Ossenfort, John; Matthews, Bryan

    2010-01-01

    Automating prelaunch diagnostics for launch vehicles offers three potential benefits. First, it potentially improves safety by detecting faults that might otherwise have been missed so that they can be corrected before launch. Second, it potentially reduces launch delays by more quickly diagnosing the cause of anomalies that occur during prelaunch processing. Reducing launch delays will be critical to the success of NASA's planned future missions that require in-orbit rendezvous. Third, it potentially reduces costs by reducing both launch delays and the number of people needed to monitor the prelaunch process. NASA is currently developing the Ares I launch vehicle to bring the Orion capsule and its crew of four astronauts to low-earth orbit on their way to the moon. Ares I-X will be the first unmanned test flight of Ares I. It is scheduled to launch on October 27, 2009. The Ares I-X Ground Diagnostic Prototype is a prototype ground diagnostic system that will provide anomaly detection, fault detection, fault isolation, and diagnostics for the Ares I-X first-stage thrust vector control (TVC) and for the associated ground hydraulics while it is in the Vehicle Assembly Building (VAB) at John F. Kennedy Space Center (KSC) and on the launch pad. It will serve as a prototype for a future operational ground diagnostic system for Ares I. The prototype combines three existing diagnostic tools. The first tool, TEAMS (Testability Engineering and Maintenance System), is a model-based tool that is commercially produced by Qualtech Systems, Inc. It uses a qualitative model of failure propagation to perform fault isolation and diagnostics. We adapted an existing TEAMS model of the TVC to use for diagnostics and developed a TEAMS model of the ground hydraulics. The second tool, Spacecraft Health Inference Engine (SHINE), is a rule-based expert system developed at the NASA Jet Propulsion Laboratory. We developed SHINE rules for fault detection and mode identification. The prototype

  20. Rape on College Campuses: Reform through Title IX.

    Science.gov (United States)

    Steinberg, Terry Nicole

    1991-01-01

    This article first, analyzes the growing problem of campus rape; second, evaluates some college rape reduction programs; third, uses case law to demonstrate that rape should be considered sex discrimination under Title IX; and, fourth, suggests an amendment to Title IX, defining rape as sex discrimination. Appropriate implementation measures by…

  1. Title IX--Beyond Compliance to Personal Commitment and Leadership

    Science.gov (United States)

    Peterson, Barbara

    1976-01-01

    In order to move beyond legal compliance to real equality of opportunity, every educational leader must develop some systematic means of extending his or her personal knowledge and skills with respect to Title IX. Provides a check list for self evaluation of educational leaders and a guide for developing an implementation plan for Title IX.…

  2. A License for Bias: Sex Discrimination, Schools, and Title IX.

    Science.gov (United States)

    Morse, Susan Ed.

    This report discusses non-sports-related Title IX complaints filed with the Department of Education's Office for Civil Rights (OCR) from 1993-1997. Its purpose is to dispel the popular belief that Title IX is a sports-equity law and to determine the effectiveness of the legislation. The document examines the kinds of complaints filed, the status…

  3. Tissue-specific expression of type IX collagen

    International Nuclear Information System (INIS)

    Nishimura, I.; Muragaki, Y.; Ninomiya, Y.; Olsen, B.R.; Hayashi, M.

    1990-01-01

    This paper reports on the tissue-specific expression of type IX collagen, a major component of cartilage fibrils. It contains molecules with three genetically distinct subunits. The subunits form three triple-helical (CO) domains separated by non-triple-helical (NC) sequences. One of the subunits in cartilage, α1(IX), contains a large amino-terminal globular domain, NC4, while a second subunit, α2(IX), contains a covalently attached chondroitin sulfate chain. The site of attachment for this chain is located within the non-triple-helical sequence NC3, which separates the amino-terminal and central triple-helical domains of the type IX molecules. The NC3 region is 5 amino acid residues longer in the α2(IX) chain than in the α1(IX) and α3(IX) chains. This may explain why type IX molecules tend to show a sharp angle in the NC3 region, and why monoclonal antibody molecules that are specific for the stub left after chondroitinase ABC digestion of the chondroitin sulfate side chain always are located on the outside of the angle

  4. The History, Uses, and Abuses of Title IX. 2016 Bulletin

    Science.gov (United States)

    American Association of University Professors, 2016

    2016-01-01

    This report, an evaluation of the history and current uses of Title IX, is the result of a joint effort by a subcommittee that included members of the AAUP's Committee A on Academic Freedom and Tenure and the Committee on Women in the Academic Profession. The report identifies tensions between current interpretations of Title IX and the academic…

  5. Intrinsic thermodynamics of inhibitor binding to human carbonic anhydrase IX.

    Science.gov (United States)

    Linkuvienė, Vaida; Matulienė, Jurgita; Juozapaitienė, Vaida; Michailovienė, Vilma; Jachno, Jelena; Matulis, Daumantas

    2016-04-01

    Human carbonic anhydrase 9th isoform (CA IX) is an important marker of numerous cancers and is increasingly interesting as a potential anticancer drug target. Various synthetic aromatic sulfonamide-bearing compounds are being designed as potent inhibitors of CA IX. However, sulfonamide compound binding to CA IX is linked to several reactions, the deprotonation of the sulfonamide amino group and the protonation of the CA active site Zn(II)-bound hydroxide. These linked reactions significantly affect the affinities and other thermodynamic parameters such as enthalpies and entropies of binding. The observed and intrinsic affinities of compound binding to CA IX were determined by the fluorescent thermal shift assay. The enthalpies and entropies of binding were determined by the isothermal titration calorimetry. The pKa of CA IX was determined to be 6.8 and the enthalpy of CA IX-Zn(II)-bound hydroxide protonation was -24 kJ/mol. These values enabled the analysis of intrinsic thermodynamics of a library of compounds binding to CA IX. The most strongly binding compounds exhibited the intrinsic affinity of 0.01 nM and the observed affinity of 2 nM. The intrinsic thermodynamic parameters of compound binding to CA IX helped to draw the compound structure to thermodynamics relationship. It is important to distinguish the intrinsic from observed parameters of any disease target protein interaction with its inhibitors as drug candidates when drawing detailed compound structure to thermodynamics correlations. Copyright © 2016 Elsevier B.V. All rights reserved.

  6. Labeled factor IX kinetics in patients with hemophilia-B

    International Nuclear Information System (INIS)

    Smith, K.J.; Thompson, A.R.

    1981-01-01

    Labeled factor IX was infused five time into four patients with hemophilia-B. Ten-minute plasma recovery average 35% (SD +/- 2) and the mean T 1/2 beta-phase elimination was 23 hr (+/- 5). No alteration in the postinfusion 125I-factor-IX could be detected by radioautography of plasma samples run on polyacrylamide gels or on crossed-immunoelectrophoresis. Label was excreted into the urine as free 125I-iodide. Kinetics were similar when the labeled preparation was infused alone or with a commercial concentrate containing unlabeled factor IX. Infusion of factor IX in man is best described by a two-compartment open pharmacokinetic model where factor IX is distributed in a space larger than the plasma volume

  7. Ares I-X USS Material Testing

    Science.gov (United States)

    Dawicke, David S.; Smith, Stephen W.; Raju, Ivatury S.

    2008-01-01

    An independent assessment was conducted to determine the critical initial flaw size (CIFS) for the flange-to-skin weld in the Ares I-X Upper Stage Simulator (USS). Material characterization tests were conducted to quantify the material behavior for use in the CIFS analyses. Fatigue crack growth rate, Charpy impact, and fracture tests were conducted on the parent and welded A516 Grade 70 steel. The crack growth rate tests confirmed that the material behaved in agreement with literature data and that a salt water environment would not significantly degrade the fatigue resistance. The Charpy impact tests confirmed that the fracture resistance of the material did not have a significant reduction for the expected operational temperatures of the vehicle.

  8. Photoconversion and fluorescence properties of a red/green-type cyanobacteriochrome AM1_C0023g2 that binds not only phycocyanobilin but also biliverdin.

    Directory of Open Access Journals (Sweden)

    Keiji eFushimi

    2016-04-01

    Full Text Available Cyanobacteriochromes (CBCRs are distantly related to the red/far-red responsive phytochromes. Red/green-type CBCRs are widely distributed among various cyanobacteria. The red/green-type CBCRs covalently bind phycocyanobilin (PCB and show red/green reversible photoconversion. Recent studies revealed that some red/green-type CBCRs from chlorophyll d-bearing cyanobacterium Acaryochloris marina covalently bind not only PCB but also biliverdin (BV. The BV-binding CBCRs show far-red/orange reversible photoconversion. Here, we identified another CBCR (AM1_C0023g2 from A. marina that also covalently binds not only PCB but also BV with high binding efficiencies, although BV chromophore is unstable in the presence of urea. Replacement of Ser334 with Gly resulted in significant improvement in the yield of the BV-binding holoprotein, thereby ensuring that the mutant protein is a fine platform for future development of optogenetic switches. We also succeeded in detecting near-infrared fluorescence from mammalian cells harboring PCB-binding AM1_C0023g2 whose fluorescence quantum yield is 3.0%. Here the PCB-binding holoprotein is shown as a platform for future development of fluorescent probes.

  9. IBM PC/IX operating system evaluation plan

    Science.gov (United States)

    Dominick, Wayne D. (Editor); Granier, Martin; Hall, Philip P.; Triantafyllopoulos, Spiros

    1984-01-01

    An evaluation plan for the IBM PC/IX Operating System designed for IBM PC/XT computers is discussed. The evaluation plan covers the areas of performance measurement and evaluation, software facilities available, man-machine interface considerations, networking, and the suitability of PC/IX as a development environment within the University of Southwestern Louisiana NASA PC Research and Development project. In order to compare and evaluate the PC/IX system, comparisons with other available UNIX-based systems are also included.

  10. Bianchi-IX string cosmological model in Lyra geometry

    Indian Academy of Sciences (India)

    Abstract. A class of cosmological solutions of massive strings for the Bianchi-IX space-time are obtained within the framework of Lyra geometry. Various physical and kinematical properties of the models are discussed.

  11. Legal Forum: Title IX: Does It Apply to Employees?

    Science.gov (United States)

    McCarthy, Martha

    1981-01-01

    Briefly reviews a number of Federal court cases that have dealt with Title IX, considering the issue of whether the 1974 regulations prohibiting sex discrimination in employment practices accurately reflect the intent of the 1972 law. (GC)

  12. Evaluation of a gadolinium-based nanoparticle (AGuIX) for contrast-enhanced MRI of the liver in a rat model of hepatic colorectal cancer metastases at 9.4 tesla

    Energy Technology Data Exchange (ETDEWEB)

    Fries, P.; Morr, D.; Mueller, A.; Massmann, A.; Seidel, R.; Schneider, G.; Buecker, A. [Saarland University Medical Center, Homburg (Germany). Clinic of Diagnostic and Interventional Radiology; Lux, F.; Tillement, O. [Universite Claude Bernard, Lyon (France). Laboratoire de Physico-Chimie des Materiaux Luminescents; Schaefer, T. [Saarland University Medical Center, Homburg (Germany). Dept. of General, Visceral and Pediatric Surgery; Menger, M.D. [Saarland University Medical Center, Homburg (Germany). Inst. for Clinical and Experimental Surgery

    2015-12-15

    The aim of this study was to compare a Gd-based nanoparticle (AGuIX) with a standard extracellular Gd-based contrast agent (Gd-DOTA) for MRI at 9.4 T in rats with hepatic colorectal cancer metastases. 12 rats with hepatic metastases were subjected to MRI using a 9.4 T animal scanner. T1w self-gated FLASH sequences (TR/TE=45/2.5 ms, alpha = 45 , TA=1: 23 min, FOV=5.12 x 5.12 cm{sup 2}, matrix = 256 x 256) were acquired before and at 10 time points after contrast injection. Each animal received 0.1 mmol/kg BW Gd-DOTA i.v. 2 days later AGuIX was applied at 0.01 mmol/kg BW (representing equal Gd doses). The SNR of normal liver (SNRliver), hyper- and hypoenhancing parts of tumors (SNRtumor, hyperenh/SNRtumor, hypoenhanc), erector spinae muscle (SNRmuscle), CNR and lesion enhancement (LE) were calculated based on ROI measurements. Mean SNRliver (Gd-DOTA: 14.6 ± 0.7; AGuIX: 28.2 ± 2.6, p < 0.001), SNRtumor, hyperenhanc (Gd-DOTA: 18.6 ± 1.2; AGuIX: 29.6 ± 2.8, p < 0.001), SNRtumor, hypoenhanc (Gd-DOTA: 12.0 ± 0.7; AGuIX: 15.4 ± 0.7, p < 0.001), SNRmuscle (Gd-DOTA: 12.3 ± 0.3; AGuIX: 14.0 ± 0.7, p < 0.001), mean CNR (Gd-DOTA: -2.5 ± 0.2; AGuIX: -7.5 ± 1.0, p < 0.001) and LE (Gd-DOTA: 3.8 ± 0.7; AGuIX: 14.9 ± 2.8, p=0.001) were significantly higher using AGuIX. Regardless of the larger molecular size, AGuIX demonstrates an early peak enhancement followed by a continuous washout. AGuIX provides better enhancement at 9.4 T compared to Gd-DOTA for equal doses of applied Gd. This is based on the molecule structure and the subsequent increased interaction with protons leading to a higher relaxivity. AGuIX potentially ameliorates the conspicuity of focal liver lesions and may improve the sensitivity in diagnostic imaging of malignant hepatic tumors.

  13. Action of the protoporphyrin-Ix (Pp-Ix) in the life period of Drosophila mutants deficient in endogenous antioxidants

    International Nuclear Information System (INIS)

    Vidal E, L. M.

    2012-01-01

    The human being is daily exposed to free radicals or reactive oxygen species (Ros), as a result of the breathing and the interactions with xenobiotics that can cause irreversible lesions in molecules and cellular structures and that they are associated to diseases like the cancer, neuro degenerative and to the acceleration of the normal process of aging. Fortunately, to reduce the damaging effect of the Ros the cell has endogenous antioxidant systems constituted by antioxidant enzymes as: the superoxide dismutase (Sod), the catalase (Cat), and the glutathione peroxidase and reductase. Even, when these systems are not enough, we find to the exogenous antioxidants that cooperate in the balance of the Ros, as the porphyrins that include to the chlorophyllin, the hemin and the bilirubin among others. The protoporphyrin-Ix (Pp-Ix) is a tetra pyrrole without metallic center with antimutagenic and antioxidant activity similar to that of the chlorophyllin. However, is also known that their over-expression has toxic effects, because induces Ros. In Drosophila melanogaster, recently was found that the Pp-Ix have dual action anti and persistent mutagenic. One of their possible mechanism to act like mutagen is through the Ros induction. To evaluate this possibility and based in that the increase in the Ros levels can accelerate the aging process, in the present work the Pp-Ix role was evaluated, in the life period of Drosophila melanogaster strains deficient in Sod and Cat, sensitive to radiation or oxidative stress (rad, whd and flr 3 ) and a wild one as control (C-S). Females and males of each strain were treated chronically for separate with sucrose or Pp-Ix and every 15 days a group of each sex was irradiated with 10 Gy of gamma rays. The results indicated that the chronic treatment with Pp-Ix and in combination with radiation, increased the life period of the C-S strain. The Sod strain had a contrary effect and this effect was pronounced with the combined treatment of Pp-Ix

  14. Buffett's Alpha

    DEFF Research Database (Denmark)

    Frazzini, Andrea; Kabiller, David; Heje Pedersen, Lasse

    Berkshire Hathaway has realized a Sharpe ratio of 0.76, higher than any other stock or mutual fund with a history of more than 30 years, and Berkshire has a significant alpha to traditional risk factors. However, we find that the alpha becomes insignificant when controlling for exposures to Betting-Against-Beta...... in publicly traded stocks versus wholly-owned private companies, we find that the former performs the best, suggesting that Buffett's returns are more due to stock selection than to his effect on management. These results have broad implications for market efficiency and the implementability of academic...

  15. Improved murine glioma detection following modified diet and photobleaching of skin PpIX fluorescence

    Science.gov (United States)

    Gibbs, Summer L.; O'Hara, Julia A.; Hoopes, P. Jack; Pogue, Brian W.

    2007-02-01

    The Aminolevulinic Acid (ALA) - Protoporphyrin IX (PpIX) system is unique in the world of photosensitizers in that the prodrug ALA is enzymatically transformed via the tissue of interest into fluorescently detectable levels of PpIX. This system can be used to monitor cellular metabolism of tumor tissue for applications such as therapy monitoring. Detecting PpIX fluorescence noninvasively has proven difficult due to the high levels of PpIX produced in the skin compared to other tissue both with and without ALA administration. In the current study, methods to decrease skin PpIX autofluorescence and skin PpIX fluorescence following ALA administration have been examined. Use of a purified diet is found to decrease both skin PpIX autofluorescence and skin PpIX fluorescence following ALA administration, while addition of a broad spectrum antibiotic to the water shows little effect. Following ALA administration, improved brain tumor detection is seen when skin PpIX fluorescence is photobleached via blue light prior to transmission spectroscopic measurements of tumor bearing and control animals. Both of these methods to decrease skin PpIX autofluorescence and skin PpIX fluorescence following ALA administration are shown to have a large effect on the ability to detect tumor tissue PpIX fluorescence noninvasively in vivo.

  16. Synthesis of [119mSn]-mesoporphyrin IX dichloride

    International Nuclear Information System (INIS)

    Denissen, J.F.

    1990-01-01

    Tin mesoporphyrin IX dichloride (Sn-MPCl 2 ) is a heme oxygenase inhibitor of current clinical interest for the treatment of neonatal hyperbilirubinemia. The synthesis of [ 119m Sn]-MPCl 2 for drug metabolism and disposition studies is reported. [ 119m Sn]-MPCl 2 was prepared in 60% radiochemical yield by metalation of the porphyrin nucleus of mesoporphyrin IX dihydrochloride with tin(II)-119m acetate. The product had a specific activity of 43.4 mCi/mmol and a radiochemical purity of 99%, as determined by radio-HPLC analysis. (author)

  17. 46 CFR 57.02-2 - Adoption of section IX of the ASME Code.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 2 2010-10-01 2010-10-01 false Adoption of section IX of the ASME Code. 57.02-2 Section... AND BRAZING General Requirements § 57.02-2 Adoption of section IX of the ASME Code. (a) The... accordance with section IX of the ASME (American Society of Mechanical Engineers) Code, as limited, modified...

  18. Ares I-X Malfunction Turn Range Safety Analysis

    Science.gov (United States)

    Beaty, J. R.

    2011-01-01

    Ares I-X was the designation given to the flight test version of the Ares I rocket which was developed by NASA (also known as the Crew Launch Vehicle (CLV) component of the Constellation Program). The Ares I-X flight test vehicle achieved a successful flight test on October 28, 2009, from Pad LC-39B at Kennedy Space Center, Florida (KSC). As part of the flight plan approval for the test vehicle, a range safety malfunction turn analysis was performed to support the risk assessment and vehicle destruct criteria development processes. Several vehicle failure scenarios were identified which could have caused the vehicle trajectory to deviate from its normal flight path. The effects of these failures were evaluated with an Ares I-X 6 degrees-of-freedom (6-DOF) digital simulation, using the Program to Optimize Simulated Trajectories Version II (POST2) simulation tool. The Ares I-X simulation analysis provided output files containing vehicle trajectory state information. These were used by other risk assessment and vehicle debris trajectory simulation tools to determine the risk to personnel and facilities in the vicinity of the launch area at KSC, and to develop the vehicle destruct criteria used by the flight test range safety officer in the event of a flight test anomaly of the vehicle. The simulation analysis approach used for this study is described, including descriptions of the failure modes which were considered and the underlying assumptions and ground rules of the study.

  19. Title IX and Sexual Harassment of Student Athletes.

    Science.gov (United States)

    Wolohan, John T.

    1995-01-01

    This article reviews what constitutes sexual harassment in sports by examining Title IX of the Education Amendments of 1972 and the effect it has had on charges of sexual harrassment in educational institutions. Athletic administrators are provided with strategies and recommendations to help schools and athletic departments develop sexual…

  20. Proceedings of the IX International Conference on Particles, Strings ...

    Indian Academy of Sciences (India)

    Proceedings of the IX International Conference on Particles, Strings and Cosmology (PASCOS 2003) - Part I. pp 147-148. Preface · D P Roy Sunanda Banerjee K Sridhar · More Details Fulltext PDF. pp 149-161. Precision tests of the standard model, the Higgs, and new physics · Guido Altarelli · More Details Abstract Fulltext ...

  1. Phase-space dynamics of Bianchi IX cosmological models

    International Nuclear Information System (INIS)

    Soares, I.D.

    1985-01-01

    The complex phase-space dynamical behaviour of a class of Biachi IX cosmological models is discussed, as the chaotic gravitational collapse due Poincare's homoclinic phenomena, and the n-furcation of periodic orbits and tori in the phase space of the models. Poincare maps which show this behaviour are constructed merically and applications are discussed. (Author) [pt

  2. Secondary Athletic Administrators' Perceptions of Title IX Policy Changes

    Science.gov (United States)

    Dahl, Gabriel Grawe

    2012-01-01

    The purpose of this study was to investigate North Dakota's Normal Competitive Region (NDNCR) high school athletic administrators' perceptions of 2010 Title IX policy changes respective to their athletic programs. Quantitative and qualitative data were collected to investigate the perceptions. Quantitatively, perception data were gathered from a…

  3. Bianchi type IX string cosmological model in general relativity

    Indian Academy of Sciences (India)

    Abstract. We have investigated Bianchi type IX string cosmological models in general relativity. To get a determinate solution, we have assumed a condition p = λ i.e. rest energy density for a cloud of strings is equal to the string tension density. The various physical and geometrical aspects of the models are also discussed.

  4. A Clash of Titans: College Football v. Title IX.

    Science.gov (United States)

    Pieronek, Catherine

    1994-01-01

    Title IX of the Educational Amendments of 1972, Civil Rights Act of 1971, designed to ensure equal educational opportunity for men and women, is reviewed as it pertains to college athletics. Related litigation and National Collegiate Athletic Association efforts to promote compliance are examined, an argument for excluding revenue-producing sports…

  5. Methods of producing protoporphyrin IX and bacterial mutants therefor

    Energy Technology Data Exchange (ETDEWEB)

    Zhou, Jizhong; Qiu, Dongru; He, Zhili; Xie, Ming

    2016-03-01

    The presently disclosed inventive concepts are directed in certain embodiments to a method of producing protoporphyrin IX by (1) cultivating a strain of Shewanella bacteria in a culture medium under conditions suitable for growth thereof, and (2) recovering the protoporphyrin IX from the culture medium. The strain of Shewanella bacteria comprises at least one mutant hemH gene which is incapable of normal expression, thereby causing an accumulation of protoporphyrin IX. In certain embodiments of the method, the strain of Shewanella bacteria is a strain of S. loihica, and more specifically may be S. loihica PV-4. In certain embodiments, the mutant hemH gene of the strain of Shewanella bacteria may be a mutant of shew_2229 and/or of shew_1140. In other embodiments, the presently disclosed inventive concepts are directed to mutant strains of Shewanella bacteria having at least one mutant hemH gene which is incapable of normal expression, thereby causing an accumulation of protoporphyrin IX during cultivation of the bacteria. In certain embodiments the strain of Shewanella bacteria is a strain of S. loihica, and more specifically may be S. loihica PV-4. In certain embodiments, the mutant hemH gene of the strain of Shewanella bacteria may be a mutant of shew_2229 and/or shew_1140.

  6. Bianchi type IX string cosmological model in general relativity

    Indian Academy of Sciences (India)

    We have investigated Bianchi type IX string cosmological models in general relativity. To get a determinate solution, we have assumed a condition ρ= i.e. rest energy density for a cloud of strings is equal to the string tension density. The various physical and geometrical aspects of the models are also discussed.

  7. Counselor Education and Title IX: Current Perceptions and Questions

    Science.gov (United States)

    Welfare, Laura E.; Wagstaff, Jennifer; Haynes, Jenna R.

    2017-01-01

    This national survey of counselor educator perceptions of the Title IX requirement to report student disclosures of gender-based discrimination revealed the need for greater clarity about faculty strategies for serving counseling program students while upholding the federal law. The authors describe the recent expansion of the requirements and…

  8. IX : An OS for datacenter applications with aggressive networking requirements

    CERN Multimedia

    CERN. Geneva

    2014-01-01

    The conventional wisdom is that aggressive networking requirements, such as high packet rates for small messages and microsecond-scale tail latency, are best addressed outside the kernel, in a user-level networking stack. We present IX, a dataplane operating system designed to support low-latency, high-throughput and high-connection count applications.  Like classic operating systems such as Linux, IX provides strong protection guarantees to the networking stack.  However, and unlike classic operating systems, IX is designed for the ground up to support applications with aggressive networking requirements on dense multi-core platforms with 10GbE and 40GbE Ethernet NICs.  IX outperforms Linux by an order of magnitude on micro benchmarks, and by up to 3.6x when running an unmodified memcached, a popular key-value store. The presentation is based on the joint work with Adam Belay, George Prekas, Ana Klimovic, Sam Grossman and Christos Kozyrakis, published at OSDI 2014; Best P...

  9. Study of primitive universe in the Bianchi IX model

    International Nuclear Information System (INIS)

    Matsas, G.E.A.

    1988-03-01

    The theory of general relativity is used to study the homogeneous cosmological model Bianch IX with isometry group SO(3) near the cosmological singularity. The Bogoyavlenskii-Novikov formalism to explain the anusual behaviour of the Liapunov exponent associated with this chaotic system, is introduced. (author) [pt

  10. Dynamic of exact perturbations in Bianchi IX type cosmological models

    International Nuclear Information System (INIS)

    Mello Neto, J.R.T. de.

    1985-01-01

    The dynamic of Bianchi IX type cosmological models is studied, after reducing Einstein equations to Hamiltonian system. Using the Melnikov method, the existence of chaos in the dynamic of these models is proved, and some numerical experiments are carried out. (M.C.K.) [pt

  11. Protoporphyrin IX-induced structural and functional changes in ...

    Indian Academy of Sciences (India)

    Unknown

    SUSMITA SIL, TANIA BOSE, DIBYENDU ROY and ABHAY SANKAR CHAKRABORTI*. Department of Biophysics, Molecular Biology and Genetics, University College of Science,. 92, Acharyya Prafulla Chandra Road, Kolkata 700 009, India. *Corresponding author (Email, aschak@cubmb.ernet.in). Protoporphyrin IX and its ...

  12. Ares I-X Flight Data Evaluation: Executive Overview

    Science.gov (United States)

    Huebner, Lawrence D.; Waits, David A.; Lewis, Donny L.; Richards, James S.; Coates, R. H., Jr.; Cruit, Wendy D.; Bolte, Elizabeth J.; Bangham, Michal E.; Askins, Bruce R.; Trausch, Ann N.

    2011-01-01

    NASA's Constellation Program (CxP) successfully launched the Ares I-X flight test vehicle on October 28, 2009. The Ares I-X flight was a developmental flight test to demonstrate that this very large, long, and slender vehicle could be controlled successfully. The flight offered a unique opportunity for early engineering data to influence the design and development of the Ares I crew launch vehicle. As the primary customer for flight data from the Ares I-X mission, the Ares Projects Office (APO) established a set of 33 flight evaluation tasks to correlate flight results with prospective design assumptions and models. The flight evaluation tasks used Ares I-X data to partially validate tools and methodologies in technical disciplines that will ultimately influence the design and development of Ares I and future launch vehicles. Included within these tasks were direct comparisons of flight data with preflight predictions and post-flight assessments utilizing models and processes being applied to design and develop Ares I. The benefits of early development flight testing were made evident by results from these flight evaluation tasks. This overview provides summary information from assessment of the Ares I-X flight test data and represents a small subset of the detailed technical results. The Ares Projects Office published a 1,600-plus-page detailed technical report that documents the full set of results. This detailed report is subject to the International Traffic in Arms Regulations (ITAR) and is available in the Ares Projects Office archives files.

  13. The effect of carbonic anhydrase IX on focal contacts during cell spreading and migration.

    Directory of Open Access Journals (Sweden)

    Lucia eCsaderova

    2013-10-01

    Full Text Available Carbonic anhydrase IX is a hypoxia-induced transmembrane enzyme linked with solid tumors. It catalyzes the reversible hydration of CO2 providing bicarbonate ions for intracellular neutralization and protons for extracellular acidosis, thereby supporting tumor cell survival and invasiveness. CA IX is the only human CA isoform containing the proteoglycan (PG domain in its extracellular part. The PG domain appears to enhance the catalytic activity of CA IX and mediate its binding to the extracellular matrix. Moreover, manipulation of the CA IX level by siRNA or overexpression modulates cell adhesion pathway so that in the presence of CA IX, cells display an increased rate of adhesion and spreading. Here we show that deletion of the PG domain as well as treatment with the PG-binding monoclonal antibody M75 can impair this CA IX effect. Accordingly, CA IX-expressing cells show more prominent and elongated maturing paxillin-stained focal contacts (FC than CA IX-negative controls, proving the role of CA IX in cell spreading. However, during active cell movement, CA IX is relocalized to lamellipodia and improves migration via its catalytic domain. Thus, we examined the influence of CA IX on FC turnover in these structures. While the lamellipodial regions lacking CA IX display dash-like adhesions, the CA IX-enriched neighboring regions exhibit dynamic dot-like FCs. These results suggest that CA IX can promote initial adhesion through its PG domain, but at the same time it facilitates formation of nascent adhesions at the leading edge of moving cells. Thereby it may allow for transmission of large forces and enhanced migration rate, presumably through catalytic activity and impact of pHe on FC dynamics. Thus, we provide the first evidence that CA IX protein localizes directly in focal adhesion structures and propose its functional relationship with the proteins involved in the regulation of FC turnover and maturation.

  14. Soluble form of carbonic anhydrase IX (CA IX) in the serum and urine of renal carcinoma patients

    Czech Academy of Sciences Publication Activity Database

    Závada, Jan; Závadová, Zuzana; Zaťovičová, M.; Hyršl, L.; Kawaciuk, I.

    2003-01-01

    Roč. 89, - (2003), s. 1067-1071 ISSN 0007-0920 R&D Projects: GA ČR GA301/99/0356 Institutional research plan: CEZ:AV0Z5052915 Keywords : carbonic anhydrase IX * tumor antigens * cancer diagnostics Subject RIV: EC - Immunology Impact factor: 3.894, year: 2003

  15. In-vivo fluorescence dosimetry of aminolevulinate-based protoporphyrin IX (PpIX) accumulation in human nonmelanoma skin cancers and precancers

    Science.gov (United States)

    Warren, Christine B.; Lohser, Sara; Chang, Sung; Bailin, Philip A.; Maytin, Edward V.

    2009-06-01

    PDT is clinically useful for precancers (actinic keratoses; AK) of the skin, but the optimal duration for 5-ALA application is still controversial. For basal cell carcinoma (BCC) and squamous cell carcinoma (SCC), cure rates remain inferior to surgical excision. Lack of knowledge about regional levels of PpIX levels within target tissues clearly contribute to these suboptimal results. To investigate PpIX levels achievable in human skin neoplasias in-vivo, a clinical study to monitor PpIX accumulation in vivo was performed. PpIX-fluorescence in patients undergoing ALA-PDT for facial AK was monitored via real-time in-vivo fluorescence dosimetry, with measurements q20 min following application of 5-ALA (Levulan Kerastick). PpIX accumulation followed linear kinetics in nearly all cases. The slopes varied widely, and did not correlate with clinical outcome in all patients. Some patients with a low accumulation of PpIX fluorescence had a good response to therapy, whereas others with high PpIX accumulation required repeat treatment (although not necessarily of the same lesion). PpIX accumulation rates did correlate to a certain degree with the overall amount of erythema. We conclude that unknown factors besides PpIX levels must be critical for the response to treatment. To assess the relationship between PpIX levels in various skin cancers, patients undergoing routine Mohs surgery for BCC or SCC were measured by in-vivo dosimetry at 2 h after 5-ALA application. Overall, a progressive increase in PpIX signal during malignant progression was observed, in the following rank order: Normal skin < AK < SCC ~ BCC.

  16. Arabidopsis Lectin Receptor Kinases LecRK-IX.1 and LecRK-IX.2 Are Functional Analogs in Regulating Phytophthora Resistance and Plant Cell Death.

    Science.gov (United States)

    Wang, Yan; Cordewener, Jan H G; America, Antoine H P; Shan, Weixing; Bouwmeester, Klaas; Govers, Francine

    2015-09-01

    L-type lectin receptor kinases (LecRK) are potential immune receptors. Here, we characterized two closely-related Arabidopsis LecRK, LecRK-IX.1 and LecRK-IX.2, of which T-DNA insertion mutants showed compromised resistance to Phytophthora brassicae and Phytophthora capsici, with double mutants showing additive susceptibility. Overexpression of LecRK-IX.1 or LecRK-IX.2 in Arabidopsis and transient expression in Nicotiana benthamiana increased Phytophthora resistance but also induced cell death. Phytophthora resistance required both the lectin domain and kinase activity, but for cell death, the lectin domain was not needed. Silencing of the two closely related mitogen-activated protein kinase genes NbSIPK and NbNTF4 in N. benthamiana completely abolished LecRK-IX.1-induced cell death but not Phytophthora resistance. Liquid chromatography-mass spectrometry analysis of protein complexes coimmunoprecipitated in planta with LecRK-IX.1 or LecRK-IX.2 as bait, resulted in the identification of the N. benthamiana ABC transporter NbPDR1 as a potential interactor of both LecRK. The closest homolog of NbPDR1 in Arabidopsis is ABCG40, and coimmunoprecipitation experiments showed that ABCG40 associates with LecRK-IX.1 and LecRK-IX.2 in planta. Similar to the LecRK mutants, ABCG40 mutants showed compromised Phytophthora resistance. This study shows that LecRK-IX.1 and LecRK-IX.2 are Phytophthora resistance components that function independent of each other and independent of the cell-death phenotype. They both interact with the same ABC transporter, suggesting that they exploit similar signal transduction pathways.

  17. Aggressive therapy improves cirrhosis in glycogen storage disease type IX.

    Science.gov (United States)

    Tsilianidis, Laurie A; Fiske, Laurie M; Siegel, Sara; Lumpkin, Chris; Hoyt, Kate; Wasserstein, Melissa; Weinstein, David A

    2013-06-01

    Glycogen storage disease type IX (GSD IX) is described as a benign condition that often does not require treatment. Most patients with the disease are thought to outgrow the childhood manifestations, which include hepatomegaly, poor growth, and ketosis with or without hypoglycemia. Long term complications including fibrosis and cirrhosis have seldom been reported in the most common subtype, GSD IXα. We present two cases of children with GSD IXα who had fibrosis at the time of diagnosis in addition to the commonly reported disease manifestations. Structured therapy with frequent doses of uncooked cornstarch and protein supplementation was initiated, and both children responded with improved growth velocity, increased energy, decreased hepatomegaly and improved well-being. Additionally, radiographic features of fibrosis improved. We propose that GSD IXα is not a benign condition. Even in patients with a less severe presentation, consideration of a structured treatment regimen to improve quality of life appears warranted. Copyright © 2013 Elsevier Inc. All rights reserved.

  18. Star formation rate in Holmberg IX dwarf galaxy

    Directory of Open Access Journals (Sweden)

    Anđelić M.M.

    2011-01-01

    Full Text Available In this paper we use previously determined Hα fluxes for dwarf galaxy Holmberg IX (Arbutina et al. 2009 to calculate star formation rate (SFR in this galaxy. We discuss possible contaminations of Hα flux and, for the first time, we take into account optical emission from supernova remnants (SNRs as a possible source of contamination of Hα flux. Derived SFR for Holmberg IX is 3:4 x 10-4M.yr-1. Our value is lower then in previous studies, due to luminous shock-heated source M&H 9-10, possible hypernova remnant, which we excluded from the total Hα flux in our calculation of SFR.

  19. Bianchi-IX, Darboux-Halphen and Chazy-Ramanujan

    Science.gov (United States)

    Chanda, Sumanto; Guha, Partha; Roychowdhury, Raju

    2016-02-01

    Bianchi-IX four metrics are SU(2) invariant solutions of vacuum Einstein equation, for which the connection-wise self-dual case describes the Euler top, while the curvature-wise self-dual case yields the Ricci flat classical Darboux-Halphen system. It is possible to see such a solution exhibiting Ricci flow. The classical Darboux-Halphen system is a special case of the generalized one that arises from a reduction of the self-dual Yang-Mills equation and the solutions to the related homogeneous quadratic differential equations provide the desired metric. A few integrable and near-integrable dynamical systems related to the Darboux-Halphen system and occurring in the study of Bianchi-IX gravitational instanton have been listed as well. We explore in details whether self-duality implies integrability.

  20. Role of vitamin C transporters and biliverdin reductase in the dual pro-oxidant and anti-oxidant effect of biliary compounds on the placental-fetal unit in cholestasis during pregnancy

    International Nuclear Information System (INIS)

    Perez, Maria J.; Castano, Beatriz; Jimenez, Silvia; Serrano, Maria A.; Gonzalez-Buitrago, Jose M.; Marin, Jose J.G.

    2008-01-01

    Maternal cholestasis causes oxidative damage to the placental-fetal unit that may challenge the outcome of pregnancy. This has been associated with the accumulation of biliary compounds able to induce oxidative stress. However, other cholephilic compounds such as ursodeoxycholic acid (UDCA) and bilirubin have direct anti-oxidant properties. In the present study we investigated whether these compounds exert a protective effect on cholestasis-induced oxidative stress in placenta as compared to maternal and fetal livers, and whether this is due in part to the activation of anti-oxidant mechanisms involving vitamin C uptake and biliverdin/bilirubin recycling. In human placenta (JAr) and liver (HepG2) cells, deoxycholic acid (DCA) similar rates of free radical generation. In JAr (not HepG2), the mitochondrial membrane potential and cell viability were impaired by low DCA concentrations; this was partly prevented by bilirubin and UDCA. In HepG2, taurocholic acid (TCA) and UDCA up-regulated biliverdin-IXα reductase (BVRα) and the vitamin C transporter SVCT2 (not SVCT1), whereas bilirubin up-regulated both SVCT1 and SVCT2. In JAr, TCA and UDCA up-regulated BVRα, SVCT1 and SVCT2, whereas bilirubin up-regulated only SVCT2. A differential response to these compounds of nuclear receptor expression (SXR, CAR, FXR and SHP) was found in both cell types. When cholestasis was induced in pregnant rats, BVRα, SVCT1 and SVCT2 expression in maternal and fetal livers was stimulated, and this was further enhanced by UDCA treatment. In placenta, only BVRα was up-regulated. In conclusion, bilirubin accumulation and UDCA administration may directly and indirectly protect the placental-fetal unit from maternal cholestasis-induced oxidative stress

  1. CONCEPT MAPPING IN TEACHING SCIENCE AMONG IX STD STUDENTS

    OpenAIRE

    R. Sangeetha; Mrs. T. Sangeetha

    2017-01-01

    Concept Map is a graphic device in which the concepts are linked by propositions leading to the precision and enhancement of meaning of the concept.” It is a schematic device for representing a set of concept meanings embedded in a hierarchy from most general concept to specific concepts of a learning unit. The study aimed to examine the concept mapping in teaching science among IX std students. The investigator adopted experimental method to study the concept mapping in teaching science amon...

  2. Spectral action for Bianchi type-IX cosmological models

    International Nuclear Information System (INIS)

    Fan, Wentao; Fathizadeh, Farzad; Marcolli, Matilde

    2015-01-01

    A rationality result previously proved for Robertson-Walker metrics is extended to a homogeneous anisotropic cosmological model, namely the Bianchi type-IX minisuperspace. It is shown that the Seeley-de Witt coefficients appearing in the expansion of the spectral action for the Bianchi type-IX geometry are expressed in terms of polynomials with rational coefficients in the cosmic evolution factors w 1 (t),w 2 (t),w 3 (t), and their higher derivates with respect to time. We begin with the computation of the Dirac operator of this geometry and calculate the coefficients a 0 ,a 2 ,a 4 of the spectral action by using heat kernel methods and parametric pseudodifferential calculus. An efficient method is devised for computing the Seeley-de Witt coefficients of a geometry by making use of Wodzicki’s noncommutative residue, and it is confirmed that the method checks out for the cosmological model studied in this article. The advantages of the new method are discussed, which combined with symmetries of the Bianchi type-IX metric, yield an elegant proof of the rationality result.

  3. New polymorphic variants of human blood clotting factor IX

    Energy Technology Data Exchange (ETDEWEB)

    Surin, V.L.; Luk`yanenko, A.V.; Tagiev, A.F.; Smirnova, O.V. [Hematological Research Center, Moscow (Russian Federation); Plutalov, O.V.; Berlin, Yu.A. [Shemyakin Institute of Bioorganic Chemistry, Moscow (Russian Federation)

    1995-04-01

    The polymorphism of Alu-repeats, which are located in the introns of the human factor IX gene (copies 1-3), was studied. To identify polymorphic variants, direct sequencing of PCR products that contained appropriate repeats was used. In each case, 20 unrelated X chromosomes were studied. A polymorphic Dra I site was found near the 3{prime}-end of Alu copy 3 within the region of the polyA tract. A PCR-based testing system with internal control of restriction hydrolysis was suggested. Testing 81 unrelated X chromosomes revealed that the frequency of the polymorphic Dra I site is 0.23. Taq I polymorphism, which was revealed in Alu copy 4 of factor IX gene in our previous work, was found to be closely linked to Dra I polymorphism. Studies in linkage between different types of polymorphisms of the factor IX gene revealed the presence of a rare polymorphism in intron a that was located within the same minisatellite region as the known polymorphic insertion 50 bp/Dde I. However, the size of the insertion in our case was 26 bp. Only one polymorphic variant was found among over 150 unrelated X chromosomes derived from humans from Moscow and its vicinity. 10 refs., 4 figs., 1 tab.

  4. Loop quantum cosmology of Bianchi IX: effective dynamics

    Science.gov (United States)

    Corichi, Alejandro; Montoya, Edison

    2017-03-01

    We study solutions to the effective equations for the Bianchi IX class of spacetimes within loop quantum cosmology (LQC). We consider Bianchi IX models whose matter content is a massless scalar field, by numerically solving the loop quantum cosmology effective equations, with and without inverse triad corrections. The solutions are classified using certain geometrically motivated classical observables. We show that both effective theories—with lapse N  =  V and N  =  1—resolve the big bang singularity and reproduce the classical dynamics far from the bounce. Moreover, due to the positive spatial curvature, there is an infinite number of bounces and recollapses. We study the limit of large field momentum and show that both effective theories reproduce the same dynamics, thus recovering general relativity. We implement a procedure to identify amongst the Bianchi IX solutions, those that behave like k  =  0,1 FLRW as well as Bianchi I, II, and VII0 models. The effective solutions exhibit Bianchi I phases with Bianchi II transitions and also Bianchi VII0 phases, which had not been studied before. We comment on the possible implications of these results for a quantum modification to the classical BKL behaviour.

  5. Loop quantum cosmology of Bianchi IX: effective dynamics

    International Nuclear Information System (INIS)

    Corichi, Alejandro; Montoya, Edison

    2017-01-01

    We study solutions to the effective equations for the Bianchi IX class of spacetimes within loop quantum cosmology (LQC). We consider Bianchi IX models whose matter content is a massless scalar field, by numerically solving the loop quantum cosmology effective equations, with and without inverse triad corrections. The solutions are classified using certain geometrically motivated classical observables. We show that both effective theories—with lapse N   =   V and N   =  1—resolve the big bang singularity and reproduce the classical dynamics far from the bounce. Moreover, due to the positive spatial curvature, there is an infinite number of bounces and recollapses. We study the limit of large field momentum and show that both effective theories reproduce the same dynamics, thus recovering general relativity. We implement a procedure to identify amongst the Bianchi IX solutions, those that behave like k   =  0,1 FLRW as well as Bianchi I, II, and VII 0 models. The effective solutions exhibit Bianchi I phases with Bianchi II transitions and also Bianchi VII 0 phases, which had not been studied before. We comment on the possible implications of these results for a quantum modification to the classical BKL behaviour. (paper)

  6. Phosphorylation of carbonic anhydrase IX controls its ability to mediate extracellular acidification in hypoxic tumors.

    Science.gov (United States)

    Ditte, Peter; Dequiedt, Franck; Svastova, Eliska; Hulikova, Alzbeta; Ohradanova-Repic, Anna; Zatovicova, Miriam; Csaderova, Lucia; Kopacek, Juraj; Supuran, Claudiu T; Pastorekova, Silvia; Pastorek, Jaromir

    2011-12-15

    In the hypoxic regions of a tumor, carbonic anhydrase IX (CA IX) is an important transmembrane component of the pH regulatory machinery that participates in bicarbonate transport. Because tumor pH has implications for growth, invasion, and therapy, determining the basis for the contributions of CA IX to the hypoxic tumor microenvironment could lead to new fundamental and practical insights. Here, we report that Thr443 phosphorylation at the intracellular domain of CA IX by protein kinase A (PKA) is critical for its activation in hypoxic cells, with the fullest activity of CA IX also requiring dephosphorylation of Ser448. PKA is activated by cAMP, which is elevated by hypoxia, and we found that attenuating PKA in cells disrupted CA IX-mediated extracellular acidification. Moreover, following hypoxia induction, CA IX colocalized with the sodium-bicarbonate cotransporter and other PKA substrates in the leading edge membranes of migrating tumor cells, in support of the concept that bicarbonate metabolism is spatially regulated at cell surface sites with high local ion transport and pH control. Using chimeric CA IX proteins containing heterologous catalytic domains derived from related CA enzymes, we showed that CA IX activity was modulated chiefly by the intracellular domain where Thr443 is located. Our findings indicate that CA IX is a pivotal mediator of the hypoxia-cAMP-PKA axis, which regulates pH in the hypoxic tumor microenvironment.

  7. Expression of hypoxia-inducible factor 1 alpha and its downstream targets in fibroepithelial tumors of the breast

    NARCIS (Netherlands)

    Kuijper, Arno; Groep, P. van der; Wall, E. van der; Diest, P.J. van

    2005-01-01

    INTRODUCTION Hypoxia-inducible factor 1 (HIF-1) alpha and its downstream targets carbonic anhydrase IX (CAIX) and vascular endothelial growth factor (VEGF) are key factors in the survival of proliferating tumor cells in a hypoxic microenvironment. We studied the expression and prognostic relevance

  8. Coulomb correction to elastic. alpha. -. alpha. scattering

    Energy Technology Data Exchange (ETDEWEB)

    Bera, P.K.; Jana, A.K.; Haque, N.; Talukdar, B. (Department of Physics, Visva-Bharati University, Santiniketan-731235, West Bengal, India (IN))

    1991-02-01

    The elastic {alpha}-{alpha} scattering is treated within the framework of a generalized phase-function method (GPFM). This generalization consists in absorbing the effect of Coulomb interaction in the comparison functions for developing the phase equation. Based on values of scattering phase shifts computed by the present method, it is concluded that the GPFM provides an uncomplicated approach to rigorous Coulomb correction in the {alpha}-{alpha} scattering.

  9. Intrahepatic expression of interferon alpha & interferon alpha ...

    African Journals Online (AJOL)

    kemrilib

    Alpha m-RNA while 30% only expressed Interferon Alpha Receptor m-RNA. Responders and non-responders to Interferon therapy ... expression of IFN Alpha Receptor mRNA. Regardless of the response to interferon, histological .... generation reverse hybridisation, line probe assay. (Inno-LiPA HCV II; Innogenetics, Ghent,.

  10. Proceedings, High-Precision $\\alpha_s$ Measurements from LHC to FCC-ee

    Energy Technology Data Exchange (ETDEWEB)

    d' Enterria, David [CERN; Skands, Peter Z. [Monash U.

    2015-01-01

    This document provides a writeup of all contributions to the workshop on "High precision measurements of $\\alpha_s$: From LHC to FCC-ee" held at CERN, Oct. 12--13, 2015. The workshop explored in depth the latest developments on the determination of the QCD coupling $\\alpha_s$ from 15 methods where high precision measurements are (or will be) available. Those include low-energy observables: (i) lattice QCD, (ii) pion decay factor, (iii) quarkonia and (iv) $\\tau$ decays, (v) soft parton-to-hadron fragmentation functions, as well as high-energy observables: (vi) global fits of parton distribution functions, (vii) hard parton-to-hadron fragmentation functions, (viii) jets in $e^\\pm$p DIS and $\\gamma$-p photoproduction, (ix) photon structure function in $\\gamma$-$\\gamma$, (x) event shapes and (xi) jet cross sections in $e^+e^-$ collisions, (xii) W boson and (xiii) Z boson decays, and (xiv) jets and (xv) top-quark cross sections in proton-(anti)proton collisions. The current status of the theoretical and experimental uncertainties associated to each extraction method, the improvements expected from LHC data in the coming years, and future perspectives achievable in $e^+e^-$ collisions at the Future Circular Collider (FCC-ee) with $\\cal{O}$(1--100 ab$^{-1}$) integrated luminosities yielding 10$^{12}$ Z bosons and jets, and 10$^{8}$ W bosons and $\\tau$ leptons, are thoroughly reviewed. The current uncertainty of the (preliminary) 2015 strong coupling world-average value, $\\alpha_s(m_Z)$ = 0.1177 $\\pm$ 0.0013, is about 1\\%. Some participants believed this may be reduced by a factor of three in the near future by including novel high-precision observables, although this opinion was not universally shared. At the FCC-ee facility, a factor of ten reduction in the $\\alpha_s$ uncertainty should be possible, mostly thanks to the huge Z and W data samples available.

  11. Noninvasive murine glioma detection improved following photobleaching of skin PpIX fluorescence

    Science.gov (United States)

    Gibbs-Strauss, Summer L.; Davis, Scott C.; O'Hara, Julia A.; Hoopes, P. Jack; Hasan, Tayyaba; Pogue, Brian W.

    2008-02-01

    Aminolevulinic Acid (ALA) is a prodrug which can be administered to cells, animals or patients after which it is transformed via the Heme synthesis pathway into the fluorescent molecule Protoporphyrin IX (PpIX). PpIX has been shown to be useful as both a photosensitizer for photodynamic therapy (PDT) and as a fluorescence imaging contrast agent. The ALA-PpIX system not only provides contrast for fluorescence imaging but also gives information about the metabolic activity of the imaged tissue and thus could be useful for monitoring cancer therapy. In the current study skin photobleaching was examined to determine if PpIX fluorescence contrast in malignant brain tumors could be better visualized noninvasively. Red light photobleaching decreased skin PpIX fluorescence and increased the ability to noninvasively quantify PpIX fluorescence in murine gliomas, as in vivo measurements of mean PpIX fluorescence more closely matched ex vivo quantification following skin photobleaching. Three doses of blue light photobleaching (4 J/cm2, 8 J/cm2 and 12 J/cm2) were tested and determined to give similar levels of skin photobleaching as well as a similar window of decreased skin PpIX fluorescence for noninvasive fluorescence imaging following the photobleaching dose administration.

  12. Saccharin: a lead compound for structure-based drug design of carbonic anhydrase IX inhibitors.

    Science.gov (United States)

    Mahon, Brian P; Hendon, Alex M; Driscoll, Jenna M; Rankin, Gregory M; Poulsen, Sally-Ann; Supuran, Claudiu T; McKenna, Robert

    2015-02-15

    Carbonic anhydrase IX (CA IX) is a key modulator of aggressive tumor behavior and a prognostic marker and target for several cancers. Saccharin (SAC) based compounds may provide an avenue to overcome CA isoform specificity, as they display both nanomolar affinity and preferential binding, for CA IX compared to CA II (>50-fold for SAC and >1000-fold when SAC is conjugated to a carbohydrate moiety). The X-ray crystal structures of SAC and a SAC-carbohydrate conjugate bound to a CA IX-mimic are presented and compared to CA II. The structures provide substantial new insight into the mechanism of SAC selective CA isoform inhibition. Published by Elsevier Ltd.

  13. Variability of in vivo recovery of factor IX after infusion of monoclonal antibody purified factor IX concentrates in patients with hemophilia B. The Mononine Study Group.

    Science.gov (United States)

    White, G C; Shapiro, A D; Kurczynski, E M; Kim, H C; Bergman, G E

    1995-05-01

    Monoclonal antibody purified factor IX concentrate, Mononine (Armour Pharmaceutical Company, Kankakee, Illinois, USA), is a recently developed replacement factor concentrate for the treatment of patients with hemophilia B. The pharmacokinetic properties of monoclonal antibody purified factor IX concentrate (MAb Factor IX concentrate) have been evaluated in only small samples of patients, and little is known about those factors that might influenced in vivo recovery of factor IX after infusion is a larger patient population. In vivo recovery of factor IX was therefore evaluated for 80 different indications in 72 patients who received MAb Factor IX concentrate for the management of spontaneous or trauma-induced bleeding, or as prophylaxis with surgery. The average recovery after infusions for presurgical pharmacokinetic analysis (mean +/- standard deviation) was 1.28 +/- 0.56 U/dl rise per U/kg infused (range 0.41-2.80), and the average recovery after all infusions for treatment was 1.23 +/- 0.49 U/dl rise per U/kg infused (range - 0.35-2.92). Recovery values for multiple MAb Factor IX doses in a given patient were also variable; the average recovery was 1.22 +/- 0.53 U/dl rise per U/kg given, and standard deviations ranged from 0.03 to 1.26. Patient age, weight, and MAb Factor IX concentrate dose minimally but significantly influenced factor IX recovery. There was no significant effect of either race, history of previous thrombotic complications during treatment with other replacement factor concentrates, or bleeding state on recovery. All of the patients treated with this preparation experienced excellent hemostasis, and no thrombotic complications were observed.

  14. Workshop on High-precision $\\alpha_s$ measurements from LHC to FCC-ee

    CERN Document Server

    S. Alekhin; d'Enterria, David; A. Banfi; S. Bethke; J. Blümlein; K.G. Chetyrkin; D. d’Enterria; G. Dissertori; X. Garcia i Tormo; A. H. Hoang; M. Klasen; T. Klijnsma; S. Kluth; J.-L. Kneur; B.A. Kniehl; D. W. Kolodrubetz; J. Kühn; P. Mackenzie; B. Malaescu; V. Mateu; L. Mihaila; S. Moch; K. Mönig; R. Pérez-Ramos; A. Pich; J. Pires; K. Rabbertz; G. P. Salam; F. Sannino; J. Soto i Riera; M. Srebre; I. W. Stewart

    2015-01-01

    This document provides a writeup of all contributions to the workshop on "High precision measurements of $\\alpha_s$: From LHC to FCC-ee" held at CERN, Oct. 12--13, 2015. The workshop explored in depth the latest developments on the determination of the QCD coupling $\\alpha_s$ from 15 methods where high precision measurements are (or will be) available. Those include low-energy observables: (i) lattice QCD, (ii) pion decay factor, (iii) quarkonia and (iv) $\\tau$ decays, (v) soft parton-to-hadron fragmentation functions, as well as high-energy observables: (vi) global fits of parton distribution functions, (vii) hard parton-to-hadron fragmentation functions, (viii) jets in $e^\\pm$p DIS and $\\gamma$-p photoproduction, (ix) photon structure function in $\\gamma$-$\\gamma$, (x) event shapes and (xi) jet cross sections in $e^+e^-$ collisions, (xii) W boson and (xiii) Z boson decays, and (xiv) jets and (xv) top-quark cross sections in proton-(anti)proton collisions. The current status of the theoretical and experiment...

  15. Effect of IX dosing on polypropylene and PVDF membrane fouling control

    KAUST Repository

    Myat, Darli Theint

    2013-07-01

    The performance of ion exchange (IX) resin for organics removal from wastewater was assessed using advanced characterisation techniques for varying doses of IX. Organic characterisation using liquid chromatography with a photodiode array (PDA) and fluorescence spectroscopy (Method A), and UV254, organic carbon and organic nitrogen detectors (Method B), was undertaken on wastewater before and after magnetic IX treatment. Results showed partial removal of the biopolymer fraction at high IX doses. With increasing concentration of IX, evidence for nitrogen-containing compounds such as proteins and amino acids disappeared from the LC-OND chromatogram, complementary to the fluorescence response. A greater fluorescence response of tryptophan-like proteins (278nm/343nm) for low IX concentrations was consistent with aggregation of tryptophan-like compounds into larger aggregates, either by self-aggregation or with polysaccharides. Recycling of IX resin through multiple adsorption steps without regeneration maintained the high level of humics removal but there was no continued removal of biopolymer. Subsequent membrane filtration of the IX treated waters resulted in complex fouling trends. Filtration tests with either polypropylene (PP) or polyvinylidene fluoride (PVDF) membranes showed higher rates of initial fouling following treatment with high IX doses (10mL/L) compared to filtration of untreated water, while treatment with lower IX doses resulted in decreased fouling rates relative to the untreated water. However, at longer filtration times the rate of fouling of IX treated waters was lower than untreated water and the relative fouling rates corresponded to the amount of biopolymer material in the feed. It was proposed that the mode of fouling changed from pore constriction during the initial filtration period to filter cake build up at longer filtration times. The organic composition strongly influenced the rate of fouling during the initial filtration period due to

  16. Carbonization-cementation process for treatment of spent IX resins

    International Nuclear Information System (INIS)

    Sathi Sasidharan, N.; Deshingkar, D.S.; Wattal, P.K.

    2004-08-01

    The spent IX resins containing radioactive fission and activation products of reactor structural materials are highly active solid wastes generated during operations of nuclear reactors. Feasibility tests were conducted for carbonization of IX resins to achieve weight and volume reduction and destruction of functional groups so as to make them compatible for immobilization in cement matrix. Carbonization of non-radioactive resins was studied at 250 to 350 degC. Carbonization residues were 20 to 32 wt% depending upon the type of resin and temperature of carbonization. The release of 137 Cs activity to off-gases was 0.004% at 300 degC and 0.05 % at 350 degC. Based on these tests, a 50 liter/batch capacity inactive resin carbonization pilot plant was set up. Carbonization residues could be immobilized into cement matrix with 60 wt % loading using vermiculite and precipitated silica as admixtures. The cumulative fraction of 137 Cs leached from the selected cement matrix was 0.0066 in 200 days. Based on pilot plant studies and cementation tests, the swollen spent resins waste volume could be minimized by 2.7 times. (author)

  17. Alloimmunization against Iy, a low-frequency antigen on platelet glycoprotein Ib/IX as a cause of severe neonatal alloimmune thrombocytopenic purpura.

    Science.gov (United States)

    Kiefel, V; Vicariot, M; Giovangrandi, Y; Kroll, H; Böhringer, M; Greinacher, A; Breitfeld, C; Santoso, S; Mueller-Eckhardt, C

    1995-01-01

    Neonatal alloimmune thrombocytopenia (NAIT) is usually induced by platelet-specific antibodies against HPA-1a (Zwa) or HPA-5b (Bra). Recently, low-frequency alloantigens on the platelet glycoprotein (GP) IIb/IIIa complex have been discovered as a cause for NAIT. In this report, a new low-frequency platelet-specific alloantigen, Iy, is described which induced severe NAIT. The corresponding antigen was detected in 1/249 unrelated German blood donors. Antibody binding assays with trypsin-digested platelets (ELISA, immunoprecipitation with biotin-labelled platelets) indicate that the antigen is not localized on the glycocalicin moiety of GP Ib alpha, but may be situated on the remnant moiety of GP Ib alpha, GP IX or GPIb beta. Apparently, Iy is not related to the HPA-2 (Ko) antigen system.

  18. The feasibility of using concentrates containing factor IX for continuous infusion.

    Science.gov (United States)

    Schulman, S; Gitel, S; Zivelin, A; Katsarou, O; Mandalaki, T; Varon, D; Martinowitz, U

    1995-04-01

    We have investigated the feasibility of continuous infusion of undiluted factor IX (F IX) over several days using minipumps. The stabilities of seven different reconstituted F IX products were substantially better than those declared by the manufacturers. Several concentrates maintained factor activities 80% of baseline for the entire period of 4 weeks at 4-8d̀C as did one product at 20-23d̀A. At 37d̀C the latter concentrate was stable for at least 1 week. The stability seemed to correlate with the purity of the product. Analysis of two prothrombin comples concentrates by gel electrophoresis demonstrated degradation of prothrombin to prethrombin-1 and fragment 1 at 37d̀C and in one of the concentrates also at 20-23d̀C. In two F IX concentrates the corresponding analysis did not reveal any degradation. Four patients were treated with continuous infusion with a pure F IX concentrate (Mononine™, Armour) after surgery or for serious haemorrhage (two each) with good haemostatic effect, an initial progressive decrease of the F IX clearance, and no side-effects. Continuous infusion with F IX, using a minipump and undiluted reconstituted factor, is therefore feasible and effective, and can be conveniently prepared for several days at a time. Pure F IX products are more stable and probably safer for this purpose.

  19. Modelling topical photodynamic therapy treatment including the continuous production of Protoporphyrin IX

    Science.gov (United States)

    Campbell, C. L.; Brown, C. T. A.; Wood, K.; Moseley, H.

    2016-11-01

    Most existing theoretical models of photodynamic therapy (PDT) assume a uniform initial distribution of the photosensitive molecule, Protoporphyrin IX (PpIX). This is an adequate assumption when the prodrug is systematically administered; however for topical PDT this is no longer a valid assumption. Topical application and subsequent diffusion of the prodrug results in an inhomogeneous distribution of PpIX, especially after short incubation times, prior to light illumination. In this work a theoretical simulation of PDT where the PpIX distribution depends on the incubation time and the treatment modality is described. Three steps of the PpIX production are considered. The first is the distribution of the topically applied prodrug, the second in the conversion from the prodrug to PpIX and the third is the light distribution which affects the PpIX distribution through photobleaching. The light distribution is modelled using a Monte Carlo radiation transfer model and indicates treatment depths of around 2 mm during daylight PDT and approximately 3 mm during conventional PDT. The results suggest that treatment depths are not only limited by the light penetration but also by the PpIX distribution.

  20. Increased protoporphyrin IX accumulation does not improve the effect of photodynamic therapy for actinic keratosis

    DEFF Research Database (Denmark)

    Nissen, C V; Heerfordt, I M; Wiegell, S R

    2017-01-01

    BACKGROUND: Photodynamic therapy (PDT) with methyl aminolaevulinate (MAL) is highly effective for treating actinic keratosis (AK) on the face/scalp, but less effective on the extremities. Insufficient accumulation of protoporphyrin IX (PpIX) may cause these inferior efficacy rates. However...

  1. "What Do I Think about Title IX?" Voices from a University Community

    Science.gov (United States)

    Paule-Koba, Amanda L.; Harris, Othello; Freysinger, Valeria J.

    2013-01-01

    Despite the apparent benefits of Title IX, the implementation of the law remains controversial, and there are divergent beliefs regarding its impact on collegiate sport. The purpose of this study was to examine how members of a university community, whose intercollegiate sport programs have changed, perceive and make sense of Title IX and the…

  2. An update on anticancer drug development and delivery targeting carbonic anhydrase IX

    Directory of Open Access Journals (Sweden)

    Justina Kazokaitė

    2017-11-01

    Full Text Available The expression of carbonic anhydrase (CA IX is up-regulated in many types of solid tumors in humans under hypoxic and acidic microenvironment. Inhibition of CA IX enzymatic activity with selective inhibitors, antibodies or labeled probes has been shown to reverse the acidic environment of solid tumors and reduce the tumor growth establishing the significant role of CA IX in tumorigenesis. Thus, the development of potent antitumor drugs targeting CA IX with minimal toxic effects is important for the target-specific tumor therapy. Recently, several promising antitumor agents against CA IX have been developed to treat certain types of cancers in combination with radiation and chemotherapy. Here we review the inhibition of CA IX by small molecule compounds and monoclonal antibodies. The methods of enzymatic assays, biophysical methods, animal models including zebrafish and Xenopus oocytes, and techniques of diagnostic imaging to detect hypoxic tumors using CA IX-targeted conjugates are discussed with the aim to overview the recent progress related to novel therapeutic agents that target CA IX in hypoxic tumors.

  3. Not Second-Class: Title IX, Equity, and Girls' High School Sports

    Science.gov (United States)

    Stader, David L.; Surface, Jeanne L.

    2014-01-01

    Title IX is designed to protect students from discrimination based on sex in any educational institution that receives financial assistance. This article focuses on Title IX as it applies to high school athletic programs by considering the trial of a high school district in California. A federal court found considerable inequalities between boys…

  4. 4p-5s transitions in YVII, VIII, ZrVIII, IX, NbIX, X and MoX, XI

    International Nuclear Information System (INIS)

    Rahimullah, K.; Chaghtai, M.S.Z.; Khatoon, S.

    1976-01-01

    The spectra of Y VII, VIII, Zr VIII, IX, Nb X and Mo X, XI are studied for the first time and the 1971 analysis of Nb IX is improved. By analyses of the transitions 4s 2 4psup(k)-4s 2 4psup(k-1)5s all the levels of the configurations 4p 3 , 4p 2 5s, 4p 2 and 4p5s are established in the spectra concerned. (Auth.)

  5. On the role of type IX collagen in the extracellular matrix of cartilage: type IX collagen is localized to intersections of collagen fibrils

    OpenAIRE

    1986-01-01

    The tissue distribution of type II and type IX collagen in 17-d-old chicken embryo was studied by immunofluorescence using polyclonal antibodies against type II collagen and a peptic fragment of type IX collagen (HMW), respectively. Both proteins were found only in cartilage where they were co-distributed. They occurred uniformly throughout the extracellular matrix, i.e., without distinction between pericellular, territorial, and interterritorial matrices. Tissues that undergo endochondral bo...

  6. Lansoprazole and carbonic anhydrase IX inhibitors sinergize against human melanoma cells.

    Science.gov (United States)

    Federici, Cristina; Lugini, Luana; Marino, Maria Lucia; Carta, Fabrizio; Iessi, Elisabetta; Azzarito, Tommaso; Supuran, Claudiu T; Fais, Stefano

    2016-01-01

    Proton Pump Inhibitors (PPIs) reduce tumor acidity and therefore resistance of tumors to drugs. Carbonic Anhydrase IX (CA IX) inhibitors have proven to be effective against tumors, while tumor acidity might impair their full effectiveness. To analyze the effect of PPI/CA IX inhibitors combined treatment against human melanoma cells. The combination of Lansoprazole (LAN) and CA IX inhibitors (FC9-399A and S4) has been investigated in terms of cell proliferation inhibition and cell death in human melanoma cells. The combination of these inhibitors was more effective than the single treatments in both inhibiting cell proliferation and in inducing cell death in human melanoma cells. These results represent the first successful attempt in combining two different proton exchanger inhibitors. This is the first evidence on the effectiveness of a new approach against tumors based on the combination of PPI and CA IX inhibitors, thus providing an alternative strategy against tumors.

  7. The importance of protoporphyrin IX efflux for ALA-PDT dosimetry

    International Nuclear Information System (INIS)

    Milanetto, M C; Imasato, H; Perussi, J R

    2009-01-01

    One of the major advances in PDT is the use of 5-aminolevulinic acid (ALA) to induce the production of an endogenous photosensitizer inside the cells using intracellular enzymatic pathways. ALA is the first intermediate in heme biosynthesis and a precursor of the protoporphyrin IX (PpIX). When activated by light, this efficient photosensitizer accumulated in the target cells can produce cytotoxicity. The aim of this study was to find the best conditions for cell killing using ALA to temporarily increase the concentration of PpIX in two cell lines. It was shown that a considerable efflux of synthesized PpIX occurs. Since this efflux is time-dependent, it is essential to know the optimum time for irradiation after ALA administration. So, the efflux of PpIX from the cells is an important parameter to be considered for ALA-PDT dosimetry

  8. Urothelial conversion of 5-aminolevulinic acid to protoporphyrin IX following oral or intravesical administration

    Science.gov (United States)

    Moore, Ronald B.; Miller, Gerald G.; Brown, Kevin; Bhatnagar, Rakesh; Tulip, John; McPhee, Malcolm S.

    1995-03-01

    Preferential conversion of 5-aminolevulinic acid (5-ALA) to protoporphyrin-IX (Pp-IX) occurs in malignant tissue, with accumulation to diagnostic and therapeutic levels. Recent studies have suggested selective conversion in epithelial tissue following oral or intravenous administration. Topical application avoids systemic photosensitization. However, the glycosaminoglycan (GAG) layer lining the urinary bladder is believed to be a protective barrier generally limiting mucosal absorption. Our objective was to evaluate uptake and conversion of 5-ALA following intravesical or oral administration. Using a rat model, Pp-IX content within epithelial and muscularis layers was quantitated by fluorescence confocal microscopy. Following intravesical administration, Pp-IX accumulated predominantly in the urothelium; whereas following oral administration, Pp-IX accumulated in both the urothelium and muscularis. Intravesical 5-ALA administration is feasible and may afford selective photosensitization of the urothelium for treatment of carcinoma in situ.

  9. Dual-wavelength excitation for fluorescence-based quantification of zinc protoporphyrin IX and protoporphyrin IX in whole blood.

    Science.gov (United States)

    Hennig, Georg; Gruber, Christian; Vogeser, Michael; Stepp, Herbert; Dittmar, Stephan; Sroka, Ronald; Brittenham, Gary M

    2014-07-01

    Quantification of erythrocyte zinc protoporphyrin IX (ZnPP) and protoporphyrin IX (PPIX), individually or jointly, is useful for the diagnostic evaluation of iron deficiency, iron-restricted erythropoiesis, lead exposure, and porphyrias. A method for simultaneous quantification of ZnPP and PPIX in unwashed blood samples is described, using dual-wavelength excitation to effectively eliminate background fluorescence from other blood constituents. In blood samples from 35 subjects, the results of the dual-wavelength excitation method and a reference high performance liquid chromatography (HPLC) assay were closely correlated both for ZnPP (rs = 0.943, p ZnPP/mol heme, 84-1238 nmol/L) and for PPIX (rs = 0.959, p ZnPP, the proposed method is compared with conventional single-wavelength excitation and with commercial front-face fluorimetry of washed erythrocytes and whole blood. We hypothesize that dual-wavelength excitation fluorimetry will provide a new approach to the suppression of background fluorescence in blood and tissue measurements of ZnPP and PPIX. Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  10. A simple and rapid fluorimetric method for simultaneous determination of protoporphyrin IX and zinc protoporphyrin IX in whole blood.

    Science.gov (United States)

    Zhou, Pei-Chen; Huang, Wei; Zhang, Rong-Bin; Zou, Zhe-Xiang; Luo, He-Dong; Falih, Ali Abbas; Li, Yao-Qun

    2008-11-01

    Derivative variable-angle synchronous fluorescence (DVASF) spectrometry improves the spectral resolution and selectivity of the fluorescence method. The feasibility of DVASF spectrometry for the simultaneous determination of protoporphyrin IX (PP) and zinc protoporphyrin IX (ZnPP) was investigated. PP and ZnPP were distinguished from each other simultaneously and rapidly by the DVASF method. The spectra were resolved well, and the two components were determined in a single scan, avoiding the spectral compensation factor for PP and chromatographic separation. The linear range of the calibration curve for PP was from 0.190 to 152 nmol/L and for ZnPP was from 0.383 to 230 nmol/L. The detection limits of PP and ZnPP were 0.098 nmol/L and 0.088 nmol/L, respectively. The within-run imprecision (RSD, n = 5) for PP was 4.1%, and for ZnPP was 4.2%. Mean recoveries (SD) of PP and ZnPP added to a blood sample were 86.4 (7.3)% and 72.9 (6.6)%, respectively. This method should be a potential tool in the rapid routine screening of large quantities of samples.

  11. Monitoring ALA-induced PpIX Photodynamic Therapy in the Rat Esophagus Using Fluorescence and Reflectance Spectroscopy

    NARCIS (Netherlands)

    Kruijt, Bastiaan; de Bruijn, Henriette S.; van der Ploeg-van den Heuvel, Angelique; de Bruin, Ron W. F.; Sterenborg, Henricus J. C. M.; Amelink, Arjen; Robinson, Dominic J.

    2008-01-01

    The presence of phased protoporphyrin IX (PpIX) bleach kinetics has been shown to correlate with esophageal response to 5-aminolevulinic acid-based photodynamic therapy (ALA-PDT) in animal models. Here we confirm the existence of phased PpIX photobleaching by increasing the temporal resolution of

  12. Induction of protoporphyrin IX by aminolaevulinic acid in actinic keratosis, psoriasis and normal skin: preferential porphyrin enrichment in differentiated cells.

    NARCIS (Netherlands)

    Smits, T.; Laarhoven, A.I.M. van; Staassen, A.; Kerkhof, P.C.M. van de; Erp, P.E.J. van; Gerritsen, M.J.P.

    2009-01-01

    BACKGROUND: In photodynamic therapy the endogenous photosensitizer protoporphyrin IX (PpIX) is synthesized following topical application of aminolaevulinic acid (ALA). However, different tissues have distinct PpIX-accumulating properties, due to differences in penetration of ALA through the stratum

  13. THE IX EUROPEAN FORUM ON ANTIPHOSPHOLIPID ANTIBODIES. A BRIEF REVIEW

    Directory of Open Access Journals (Sweden)

    Nataliya V Seredavkina

    2014-01-01

    Full Text Available The article presents a brief review of the proceedings of the IX European Forum on antiphospholipid antibodies held in May 2013 in Krakow (Poland. The aim of the Forum is to coordinate multicenter projects focused on antiphospholipid antibodies (aPL, both clinical and fundamental research, based on cooperation between the European countries. The main purpose is to stimulate research into all aspects of aPL, to facilitate the exchange of information between institutions, and to involve many centers in different countries into scientific research on this issue. The issues of standardization of the diagnostic criteria for antiphospholipid syndrome (APS, primarily serological markers (their specificity, sensitivity and correlation with clinical manifestations, as well as non-criterial manifestations of APS, were considered at the meeting. In addition, the therapy problems were discussed.

  14. Electrochemical properties of protoporphyrin IX zinc(II) films.

    Science.gov (United States)

    Hirano, Chisato; Imae, Toyoko

    2004-12-15

    The electrochemical properties of protoporphyrin IX zinc(II) (ZnPP) films on indium-tin oxide (ITO) substrate have been studied for three types of films with different arrangements, which were an adsorbed film of ZnPP and LB films of ZnPP and its hybrid with hexadecyltrimethylammonium bromide. Cyclic voltammetry (CV) measurement showed that, as the adsorbed amount of ZnPP increases, an irreversible oxidation peak of ZnPP film is intensified. This reveals that electrochemical properties depend on the adsorbed amount rather than the orientation of porphyrin molecules. It was also supported from CV measurement and ultraviolet-visible absorption spectroscopy that porphyrins adsorbed on ITO substrate were desorbed after the single scan of potential. Additionally, photoresponse of these ZnPP films was investigated by photocurrent measurement. The photocurrent generation is due to carboxylic acid moieties but not ZnPP macrocycles.

  15. Protoporphyrin IX: the Good, the Bad, and the Ugly

    Science.gov (United States)

    Sachar, Madhav; Anderson, Karl E.

    2016-01-01

    Protoporphyrin IX (PPIX) is ubiquitously present in all living cells in small amounts as a precursor of heme. PPIX has some biologic functions of its own, and PPIX-based strategies have been used for cancer diagnosis and treatment (the good). PPIX serves as the substrate for ferrochelatase, the final enzyme in heme biosynthesis, and its homeostasis is tightly regulated during heme synthesis. Accumulation of PPIX in human porphyrias can cause skin photosensitivity, biliary stones, hepatobiliary damage, and even liver failure (the bad and the ugly). In this work, we review the mechanisms that are associated with the broad aspects of PPIX. Because PPIX is a hydrophobic molecule, its disposition is by hepatic rather than renal excretion. Large amounts of PPIX are toxic to the liver and can cause cholestatic liver injury. Application of PPIX in cancer diagnosis and treatment is based on its photodynamic effects. PMID:26588930

  16. Ares I-X Range Safety Flight Envelope Analysis

    Science.gov (United States)

    Starr, Brett R.; Olds, Aaron D.; Craig, Anthony S.

    2011-01-01

    Ares I-X was the first test flight of NASA's Constellation Program's Ares I Crew Launch Vehicle designed to provide manned access to low Earth orbit. As a one-time test flight, the Air Force's 45th Space Wing required a series of Range Safety analysis data products to be developed for the specified launch date and mission trajectory prior to granting flight approval on the Eastern Range. The range safety data package is required to ensure that the public, launch area, and launch complex personnel and resources are provided with an acceptable level of safety and that all aspects of prelaunch and launch operations adhere to applicable public laws. The analysis data products, defined in the Air Force Space Command Manual 91-710, Volume 2, consisted of a nominal trajectory, three sigma trajectory envelopes, stage impact footprints, acoustic intensity contours, trajectory turn angles resulting from potential vehicle malfunctions (including flight software failures), characterization of potential debris, and debris impact footprints. These data products were developed under the auspices of the Constellation's Program Launch Constellation Range Safety Panel and its Range Safety Trajectory Working Group with the intent of beginning the framework for the operational vehicle data products and providing programmatic review and oversight. A multi-center NASA team in conjunction with the 45th Space Wing, collaborated within the Trajectory Working Group forum to define the data product development processes, performed the analyses necessary to generate the data products, and performed independent verification and validation of the data products. This paper outlines the Range Safety data requirements and provides an overview of the processes established to develop both the data products and the individual analyses used to develop the data products, and it summarizes the results of the analyses required for the Ares I-X launch.

  17. Ares I-X Range Safety Analyses Overview

    Science.gov (United States)

    Starr, Brett R.; Gowan, John W., Jr.; Thompson, Brian G.; Tarpley, Ashley W.

    2011-01-01

    Ares I-X was the first test flight of NASA's Constellation Program's Ares I Crew Launch Vehicle designed to provide manned access to low Earth orbit. As a one-time test flight, the Air Force's 45th Space Wing required a series of Range Safety analysis data products to be developed for the specified launch date and mission trajectory prior to granting flight approval on the Eastern Range. The range safety data package is required to ensure that the public, launch area, and launch complex personnel and resources are provided with an acceptable level of safety and that all aspects of prelaunch and launch operations adhere to applicable public laws. The analysis data products, defined in the Air Force Space Command Manual 91-710, Volume 2, consisted of a nominal trajectory, three sigma trajectory envelopes, stage impact footprints, acoustic intensity contours, trajectory turn angles resulting from potential vehicle malfunctions (including flight software failures), characterization of potential debris, and debris impact footprints. These data products were developed under the auspices of the Constellation's Program Launch Constellation Range Safety Panel and its Range Safety Trajectory Working Group with the intent of beginning the framework for the operational vehicle data products and providing programmatic review and oversight. A multi-center NASA team in conjunction with the 45th Space Wing, collaborated within the Trajectory Working Group forum to define the data product development processes, performed the analyses necessary to generate the data products, and performed independent verification and validation of the data products. This paper outlines the Range Safety data requirements and provides an overview of the processes established to develop both the data products and the individual analyses used to develop the data products, and it summarizes the results of the analyses required for the Ares I-X launch.

  18. Title IX and Pregnancy Discrimination in Higher Education: The New Frontier.

    Science.gov (United States)

    Mason, Mary Ann; Younger, Jaclyn

    2014-01-01

    Pregnancy discrimination is a little known area covered by Title IX. According to the Title IX regulations, areas of prohibited discrimination include: admissions; hiring; coursework accommodations and completion; pregnancy leave policies and status protection upon return from leave; and health insurance coverage. These regulations will soon get more attention as the Obama Administration insists on Title IX dissemination and compliance in an effort to stop the leaky pipeline for women in the STEM fields. Research shows that pregnancy and childbirth are the major reasons why women drop out of research science in much greater numbers than men; this dropout is most likely to occur among graduate students and postdoctoral fellows who are in their peak childbearing years. A similar pattern of dropout can be seen in all fields, including related professional schools. Research also reveals that there are currently few established policies in higher education which adequately address pregnancy and childbirth in formal policies for students. This article will address new efforts by the United States Department of Education and the federal agencies to begin to seek compliance relating to Title IX and pregnancy discrimination in educational institutions. It will discuss the recent successful efforts of the U.S. Department of Education's Office for Civil Rights in investigating and settling pregnancy discrimination claims as well as the lessons learned in private action lawsuits under Title IX. Title IX private action suits have transformed athletics for women, and more recently Title IX has been applied in sexual harassment cases. Pregnancy discrimination is now the new frontier.

  19. Syntheses of carbon-13 labeled protoporphyrin-IX for spectroscopic studies of heme proteins

    International Nuclear Information System (INIS)

    Fujinari, E.M.

    1985-01-01

    The development of various methodologies for synthesis of selectively tailored protoporphyrin-IX dimethyl ester are presented. The iron(II) complex of protoporphyrin-IX is the heme, the prosthetic group for Hb, Mb, cytochromes and peroxidases. The significance of this research is to provide direct means to establish definitive carbon-13 NMR assignments of heme proteins in order to study not only the structure-function relationships, but also protein dynamics of these vital systems. Carbon-13 labeling at the beta-vinyl position was first achieved by ozonolysis of protoporphyrin-IX dimethyl ester. Column LC method were used to first isolate 2,4-diformyldeuteroporphyrin-IX dimethyl ester. Concomitantly, monofomyl-monovinyl porphyrins were obtained as a mixture of two isomers. This mixture was separated by MPLC or prep HPLC to afford the isomerically pure products, Spirographis porphyrin dimethyl ester and Iso-Spirographis porphyrin dimethyl ester. A Wittig reaction to each of these porphyrins with 13 C-methyltriphenylphosphonium iodide gave 2,4-bis[ 13 C 2 ]-vinyl protoporphyrin-IX dimethyl ester, 2-[ 13 C 2 ]-vinyl protoporphyrin-IX dimethyl ester, and the 4-[ 13 C 2 ]-vinyl protoporphyrin-IX dimethyl ester, respectively

  20. The use of CA-IX as a diagnostic method for oral leukoplakia.

    Science.gov (United States)

    Pérez-Sayáns, M; Suárez-Peñaranda, J M; Torres-López, M; Supuran, C T; Gándara-Vila, P; Gayoso-Diz, P; Barros-Angueira, F; Gallas-Torreira, M; García-García, A

    2015-02-01

    The presence and degree of dysplasia are important diagnostic and prognostic criteria for oral leukoplakia, but evaluation of dysplasia is difficult and subjective. Carbonic anhydrase-IX (CA-IX) is expressed primarily in tumor cells and is considered a specific hypoxia marker. We investigated the role of CA-IX in oral leukoplakia. We investigated 30 specimens of oral leukoplakia and 35 dysplasia specimens adjacent to the tumor margin. We analyzed clinical variables including age, sex, degree of dysplasia, and smoking, clinical appearance of leukoplakia, number of lesions, location, size, clinical monitoring, malignant transformation and recurrence. For the immunohistochemical study, we used a noncommercial monoclonal antibody against human CA-IX MAb M75. We found greater CA-IX positivity in nonsmokers, erythroplakia and mottled leukoplakia, those located on the tongue, patients with multiple lesions, 2-4 cm leukoplakias and in recurrent cases, although differences were not statistically significant. All lesions in all samples without dysplasia were negative for CA-IX; however, for all other categories of dysplasia, the percentages of positivity and negativity varied. Regarding the diagnostic index values, we found a sensitivity of 32%, specificity of 100%, a positive predictive value of 100% and a negative predictive value of 13%. Leukoplakias appear mainly in females and potentially are malignant; more than 90% have some degree of dysplasia, and therefore require close clinical and histopathological monitoring. The CA-IX immunohistochemical marker may be useful for screening samples without dysplasia owing to its high specificity.

  1. Kinetics of the Factor XIa catalyzed activation of human blood coagulation Factor IX

    International Nuclear Information System (INIS)

    Walsh, P.N.; Bradford, H.; Sinha, D.; Piperno, J.R.; Tuszynski, G.P.

    1984-01-01

    The kinetics of activation of human Factor IX by human Factor XIa was studied by measuring the release of a trichloroacetic acid-soluble tritium-labeled activation peptide from Factor IX. Initial rates of trichloroacetic acid-soluble 3 H-release were linear over 10-30 min of incubation of Factor IX (88 nM) with CaCl 2 (5 mM) and with pure (greater than 98%) Factor XIa (0.06-1.3 nM), which was prepared by incubating human Factor XI with bovine Factor XIIa. Release of 3 H preceded the appearance of Factor IXa activity, and the percentage of 3 H released remained constant when the mole fraction of 3 H-labeled and unlabeled Factor IX was varied and the total Factor IX concentration remained constant. A linear correlation (r greater than 0.98, P less than 0.001) was observed between initial rates of 3 H-release and the concentration of Factor XIa, measured by chromogenic assay and by radioimmunoassay and added at a Factor IX:Factor XIa molar ratio of 70-5,600. Kinetic parameters, determined by Lineweaver-Burk analysis, include K/sub m/ (0.49 microM) of about five- to sixfold higher than the plasma Factor IX concentration, which could therefore regulate the reaction. The catalytic constant (k/sub cat/) (7.7/s) is approximately 20-50 times higher than that reported by Zur and Nemerson for Factor IX activation by Factor VIIa plus tissue factor. Therefore, depending on the relative amounts of Factor XIa and Factor VIIa generated in vivo and other factors which may influence reaction rates, these kinetic parameters provide part of the information required for assessing the relative contributions of the intrinsic and extrinsic pathways to Factor IX activation, and suggest that the Factor XIa catalyzed reaction is physiologically significant

  2. The H IX galaxy survey - II. H I kinematics of H I eXtreme galaxies

    Science.gov (United States)

    Lutz, K. A.; Kilborn, V. A.; Koribalski, B. S.; Catinella, B.; Józsa, G. I. G.; Wong, O. I.; Stevens, A. R. H.; Obreschkow, D.; Dénes, H.

    2018-05-01

    By analysing a sample of galaxies selected from the H I Parkes All Sky Survey (HIPASS) to contain more than 2.5 times their expected H I content based on their optical properties, we investigate what drives these H I eXtreme (H IX) galaxies to be so H I-rich. We model the H I kinematics with the Tilted Ring Fitting Code TiRiFiC and compare the observed H IX galaxies to a control sample of galaxies from HIPASS as well as simulated galaxies built with the semi-analytic model DARK SAGE. We find that (1) H I discs in H IX galaxies are more likely to be warped and more likely to host H I arms and tails than in the control galaxies, (2) the average H I and average stellar column density of H IX galaxies is comparable to the control sample, (3) H IX galaxies have higher H I and baryonic specific angular momenta than control galaxies, (4) most H IX galaxies live in higher spin haloes than most control galaxies. These results suggest that H IX galaxies are H I-rich because they can support more H I against gravitational instability due to their high specific angular momentum. The majority of the H IX galaxies inherits their high specific angular momentum from their halo. The H I content of H IX galaxies might be further increased by gas-rich minor mergers. This paper is based on data obtained with the Australia Telescope Compact Array through the large program C 2705.

  3. DNA Damage and Cell Cycle Arrest Induced by Protoporphyrin IX in Sarcoma 180 Cells

    Directory of Open Access Journals (Sweden)

    Qing Li

    2013-09-01

    Full Text Available Background: Porphyrin derivatives have been widely used in photodynamic therapy as effective sensitizers. Protoporphyrin IX (PpIX, a well-known hematoporphyrin derivative component, shows great potential to enhance light induced tumor cell damage. However, PpIX alone could also exert anti-tumor effects. The mechanisms underlying those direct effects are incompletely understood. This study thus investigated the putative mechanisms underlying the anti-tumor effects of PpIX on sarcoma 180 (S180 cells. Methods: S180 cells were treated with different concentrations of PpIX. Following the treatment, cell viability was evaluated by the 3-(4, 5- dimethylthiazol-2-yl-2, 5-diphenyltetrazoliumbromide (MTT assay; Disruption of mitochondrial membrane potential was measured by flow cytometry; The trans-location of apoptosis inducer factor (AIF from mitochondria to nucleus was visualized by confocal laser scanning microscopy; DNA damage was detected by single cell gel electrophoresis; Cell cycle distribution was analyzed by DNA content with flow cytometry; Cell cycle associated proteins were detected by western blotting. Results: PpIX (≥ 1 µg/ml significantly inhibited proliferation and reduced viability of S180 cells in a dose-dependent manner. PpIX rapidly and significantly triggered mitochondrial membrane depolarization, AIF (apoptosis inducer factor translocation from mitochondria to nucleus and DNA damage, effects partially relieved by the specific inhibitor of MPTP (mitochondrial permeability transition pore. Furthermore, S phase arrest and upregulation of the related proteins of P53 and P21 were observed following 12 and 24 h PpIX exposure. Conclusion: PpIX could inhibit tumor cell proliferation by induction of DNA damage and cell cycle arrest in the S phase.

  4. Modulation of the endogenous production of protoporphyrin IX in a yeast-based model organism

    Science.gov (United States)

    Joniová, Jaroslava; Gerelli, Emmanuel; Wagnières, Georges

    2017-02-01

    The main aim of this study was to assess conditions at which simple yeast-based model organism produces maximal levels of protoporphyrin IX (PpIX) after an exogenous administration of its precursor, 5-aminolevulinic acid (ALA), and the ferrous-ion chelator 2,2'-bipyridyl. We observed that the fluorescing porphyrin, produced after these administrations, was likely to be PpIX since fluorescence spectroscopy of the porphyrins produced endogenously in yeast cells resembles that of PpIX in DMSO and in vivo in the chick's chorioallantoic membrane model. Also, fluorescence lifetimes of these porphyrins are very similar to that of PpIX in vitro and in vivo. This suggests that PpIX is the main fluorescent compound produced by yeast in our conditions. We found that the conditions at which yeast produces the maximal PpIX were a synchronous administration of 5 μM ALA and 1 mM 2,2'-bipyridyl for yeast incubated in aqueous glucose and 1 mM 2,2'-bipyridyl in the presence of YPD medium. Such a simple model is of high interest to study basic mechanisms involved in the mitochondrial respiration since PpIX, which is produced in this organelle, can be used as an oxygen sensor, or to perform photodynamic therapy and photodiagnosis. Since the absorption and scattering coefficients of this model are much smaller than those of soft tissues over the visible part of the spectrum, a version of this model loaded with appropriated amounts of light absorbing and scattering particles could be designed as a phantom to mimic tumors containing PpIX, a useful tool to optimize certain cancer photodetection set-ups.

  5. Evaluation of the potential inhibitor of Ix (Pp-Ix) protoporphyrin of the genetic damage induced by gamma rays administered to different dose reasons in Drosophila melanogaster

    International Nuclear Information System (INIS)

    Flores A, J. A.

    2016-01-01

    Ionizing radiation can damage in DNA directly or indirectly by free radicals (Rl), characterized by unstable and highly reactive. To avoid damage by Rl the cell has endogenous antioxidants such as Sod, Cat, GSH or exogenous as some vitamins, but if with these mechanisms does not reach the cell homeostasis, the consequence may be the generation of chronic-disease degenerative such as cancer. This study was conducted in order to test the inhibitory role of Rl protoporphyrin Ix (Pp-Ix), induced by 20 Gy of gamma rays administered at different dose ratios using the assay of somatic mutation and recombination in the Drosophila wing. The results indicated that 20 Gy delivered at a rate of low dose (6.659 Gy/h), caused elevated frequencies of genetic damage (p <0.001), compared with those that induced a high dose reason (1111.42 Gy/h) in larvae of 48 h old. The difference is probably due to an indirect damage by Rl; when this hypothesis was approved with the possible inhibitor role of Pp-Ix (0.69 m M), damage was increased with the two reasons of tested doses. This result may be due to: 1) the Pp-Ix is not a good inhibitor of Rl, 2) the difference in the frequency of mutation found with both dose reasons, not due to Rl so that this compound did not reduce the genetic damage, and 3) that Pp-Ix acts as pro oxidant. (Author)

  6. The determination of $\\alpha_s$ by the ALPHA collaboration

    CERN Document Server

    Bruno, Mattia

    2016-01-01

    We review the ALPHA collaboration strategy for obtaining the QCD coupling at high scale. In the three-flavor effective theory it avoids the use of perturbation theory at $\\alpha > 0.2$ and at the same time has the physical scales small compared to the cutoff $1/a$ in all stages of the computation. The result $\\Lambda_\\overline{MS}^{(3)}=332(14)$~MeV is translated to $\\alpha_\\overline{MS}(m_Z)=0.1179(10)(2)$ by use of (high order) perturbative relations between the effective theory couplings at the charm and beauty quark "thresholds". The error of this perturbative step is discussed and estimated as $0.0002$.

  7. Protoporphyrin IX fluorescence as potential indicator of psoriasis severity and progression.

    Science.gov (United States)

    Wang, Bo; Xu, Yu-Ting; Zhang, Li; Zheng, Jie; Sroka, Ronald; Wang, Hong-Wei; Wang, Xiu-Li

    2017-09-01

    In psoriatic lesions, fluorescence diagnosis with blue light can detect protoporphyrin IX accumulation, especially after topical 5-aminolaevulinic acid (ALA) application. However, variable fluorescence distributions, interpersonal variations and long incubation time limit its wide application in clinic. This study is aimed to identify a consistent and convenient method to facilitate diagnosis and evaluation of psoriatic lesions. 104 psoriatic lesions from 30 patients were evaluated. Single lesion PSI scoring and fluorescence by macrospectrofluorometry were recorded on each lesion before and after treatment with narrow-band UVB. Punctate red fluorescence, emitted mainly by protoporphyrin IX, is observed in some psoriatic lesions. According to psoriasis severity index, fluorescence-positive lesions are more severe than lesions without fluorescence. We found a significant positive correlation between psoriasis severity and fluorescence intensity from protoporphyrin IX. Protoporphyrin IX-induced red fluorescence can be used as a novel and convenient approach for psoriasis diagnosis and progression evaluation. Copyright © 2017. Published by Elsevier B.V.

  8. 11. IX toimus Rotermanni soolalaos happening "Olematute bändide festival"

    Index Scriptorium Estoniae

    2002-01-01

    Kiwa raamatu "Lastehaiglast põgenenud mänguasjad" (koostaja Hasso Krull, kujundaja Peeter Laurits, kaanel modell Eleonora Kampe ja Kiwa) ja sound-art-projektide esitlus. 12. IX Kiwa ja Andres Lõo loeng

  9. Special Section Guest Editorial: Nanostructured Thin Films IX: Design, Fabrication, Characterization, and Modeling

    Science.gov (United States)

    Lakhtakia, Akhlesh; Mackay, Tom G.; Suzuki, Motofumi

    2017-10-01

    This guest editorial introduces the special section on Nanostructured Thin Films IX: Design, Fabrication, Characterization, and Modeling, which appears in the October-December 2017 issue of the Journal of Nanophotonics.

  10. Pain during photodynamic therapy is associated with protoporphyrin IX fluorescence and fluence rate

    DEFF Research Database (Denmark)

    Wiegell, S.R.; Skiveren, J.; Philipsen, P.A.

    2008-01-01

    and protoporphyrin IX (PpIX) fluorescence, lesion type, lesion preparation and lesion localization. Methods Twenty-six patients with actinic keratoses (AKs) in different localizations and 34 patients with facial acne vulgaris were treated with methyl aminolaevulinate-PDT. Patients with acne were illuminated using......) patients with acne had a pain score of 6 [interquartile range (IQR) 5-7] compared with 8 (IQR 6-10) when using a fluence rate of 68 mW cm(-2) (P = 0.018). After correcting the pain score for PpIX fluorescence no differences in pain scores were found between first and second acne treatment, locations of AK...... lesions or between the two types of lesions. Conclusions Pain during PDT was correlated with the PpIX fluorescence in the treatment area prior to illumination. Pain was reduced using a lower fluence rate during PDT of acne Udgivelsesdato: 2008/4...

  11. Analysis of cell line variation in biochemical production of protoporphyrin IX

    Science.gov (United States)

    Gibbs, Summer L.; Chen, Bin; O'Hara, Julia A.; Hoopes, P. Jack; Hasan, Tayyaba; Pogue, Brian W.

    2006-02-01

    Protoporphyrin IX (PpIX) is produced via the heme synthesis pathway by the cell following administration of aminolevulinic acid (ALA). ALA synthase, the enzyme that produces ALA in the cell from glycine and succinyl-coenzyme A, is inhibited in a feedback mechanism by heme and thus is the rate limiting enzyme in the heme synthesis pathway. Since ALA is administered systemically, the rate limiting step that naturally exists in the cells is bypassed, however it is currently unclear why cells have different rate limiting steps in the ALA-PpIX synthesis pathway, and more specifically which types of cancer cells are most productive. It has been determined that when the same amount of ALA is administered to a wide panel of cancer cells in vitro that vastly differing amounts of PpIX are produced. The steps for the ALA-PpIX pathway occur in and around the mitochondria of the cell, but interestingly no correlation is seen between PpIX production and mitochondrial content of the cell, following ALA administration. However, total cell area shows positive correlation with PpIX production. Administration of the iron chelator, 1,2-dimethyl-3-hydroxy-4-pyridone (L1) in combination with ALA allows the final step in the heme synthesis pathway, conversion of PpIX to heme, to be delayed and thus increases the detectable amount of PpIX in each cell line. The cell lines that have the lowest PpIX production following administration of ALA alone show the largest increase in production following the combined administration of ALA and L1. PpIX fluorescence is thought to be a measure of cellular activity and the goal of the current study was to determine which cell lines would be the most promising targets for fluorescence detection or monitoring response to therapy. The results indicate that the cells with larger size and larger numbers of mitochondria may be good potential targets for this therapy. While this conclusion may appear obvious, it is not universally true, and cellular specific

  12. Effect of IX dosing on polypropylene and PVDF membrane fouling control.

    Science.gov (United States)

    Myat, Darli Theint; Mergen, Max; Zhao, Oliver; Stewart, Matthew B; Orbell, John D; Merle, Tony; Croué, Jean-Philippe; Gray, Stephen

    2013-07-01

    The performance of ion exchange (IX) resin for organics removal from wastewater was assessed using advanced characterisation techniques for varying doses of IX. Organic characterisation using liquid chromatography with a photodiode array (PDA) and fluorescence spectroscopy (Method A), and UV254, organic carbon and organic nitrogen detectors (Method B), was undertaken on wastewater before and after magnetic IX treatment. Results showed partial removal of the biopolymer fraction at high IX doses. With increasing concentration of IX, evidence for nitrogen-containing compounds such as proteins and amino acids disappeared from the LC-OND chromatogram, complementary to the fluorescence response. A greater fluorescence response of tryptophan-like proteins (278 nm/343 nm) for low IX concentrations was consistent with aggregation of tryptophan-like compounds into larger aggregates, either by self-aggregation or with polysaccharides. Recycling of IX resin through multiple adsorption steps without regeneration maintained the high level of humics removal but there was no continued removal of biopolymer. Subsequent membrane filtration of the IX treated waters resulted in complex fouling trends. Filtration tests with either polypropylene (PP) or polyvinylidene fluoride (PVDF) membranes showed higher rates of initial fouling following treatment with high IX doses (10 mL/L) compared to filtration of untreated water, while treatment with lower IX doses resulted in decreased fouling rates relative to the untreated water. However, at longer filtration times the rate of fouling of IX treated waters was lower than untreated water and the relative fouling rates corresponded to the amount of biopolymer material in the feed. It was proposed that the mode of fouling changed from pore constriction during the initial filtration period to filter cake build up at longer filtration times. The organic composition strongly influenced the rate of fouling during the initial filtration period due to

  13. Evaluation of Sonochemiluminescence in a Phantom in the Presence of Protoporphyrin IX Conjugated to Nanoparticles

    Directory of Open Access Journals (Sweden)

    Ahmad Shanei

    2012-03-01

    Full Text Available Introduction When a liquid is irradiated with high-intensity and low-frequency ultrasound, acoustic cavitation occurs and there are some methods to determine and quantify this phenomenon. The existing methods for performing these experiments include sonochemiluminescence (SCL and chemical dosimetric methods. The particles in a liquid decrease the ultrasonic intensity threshold needed for cavitation onset. In this study, a new nanoconjugate made up of Protoporphyrin IX (PpIX and gold nanoparticles (GNP, i.e., Au-PpIX was used to provide nucleation sites for cavitation. The nonradiative relaxation time of PpIX in the presence of GNPs is longer than the similar time for PpIX without GNPs. This effect can be used in medical diagnostic and therapeutic applications. Materials and Methods The acoustic cavitation activity was investigated studying integrated SCL signal in the wavelength range of 400-500 nm in polyacrylamide gel phantom containing luminol using a cooled CCD spectrometer at different intensities of 1 MHz ultrasound. In order to confirm these results, a chemical dosimetric method was utilized, too. Results SCL signal level in gel phantom containing Au-PpIX was higher than the other phantoms. These results have been confirmed by the chemical dosimetric data. Conclusion This finding can be related to the existence of PpIX as a sensitizer and GNPs as cavitation nuclei. In other words, nanoparticles have acted as the sites for cavitation and have increased the cavitation rate. Another theory is that activation of PpIX has produced more free radicals and has enhanced the SCL signal level.

  14. Development and characterisation of a brain tumour mimicking protoporphyrin IX fluorescence phantom (Conference Presentation)

    Science.gov (United States)

    Xie, Yijing; Tisca, Cristiana; Peveler, William; Noimark, Sacha; Desjardins, Adrien E.; Parkin, Ivan P.; Ourselin, Sebastien; Vercauteren, Tom

    2017-02-01

    5-ALA-PpIX fluorescence-guided brain tumour resection can increase the accuracy at which cancerous tissue is removed and thereby improve patient outcomes, as compared with standard white light imaging. Novel optical devices that aim to increase the specificity and sensitivity of PpIX detection are typically assessed by measurements in tissue-mimicking optical phantoms of which all optical properties are defined. Current existing optical phantoms specified for PpIX lack consistency in their optical properties, and stability with respect to photobleaching, thus yielding an unstable correspondence between PpIX concentration and the fluorescence intensity. In this study, we developed a set of aqueous-based phantoms with different compositions, using deionised water or PBS buffer as background medium, intralipid as scattering material, bovine haemoglobin as background absorber, and either PpIX dissolved in DMSO or a novel nanoparticle with similar absorption and emission spectrum to PpIX as the fluorophore. We investigated the phantom stability in terms of aggregation and photobleaching by comparing with different background medium and fluorophores, respectively. We characterised the fluorescence intensity of the fluorescent nanoparticle in different concentration of intralipid and haemoglobin and its time-dependent stability, as compared to the PpIX-induced fluorescence. We corroborated that the background medium was essential to prepare a stable aqueous phantom. The novel fluorescent nanoparticle used as surrogate fluorophore of PpIX presented an improved temporal stability and a reliable correspondence between concentration and emission intensity. We proposed an optimised phantom composition and recipe to produce reliable and repeatable phantom for validation of imaging device.

  15. Influence of protoporphyrin IX loaded phloroglucinol succinic acid dendrimer in photodynamic therapy

    Science.gov (United States)

    Kumar, M. Suresh; Aruna, P.; Ganesan, S.

    2018-03-01

    One of the major problems reported clinically for photosensitizers (PS) in Photodynamic therapy (PDT) is, the cause of side-effects to normal tissue due to dark toxicity. The usefulness of photosensitizers can be made possible by reducing its dark toxicity nature. In such scenario, biocompatible carriers can be used as a drug delivery system to evade the problems that arises while using free (dark toxic) drugs. So in this study, we have developed a nano drug delivery system called Phloroglucinol Succinic acid (PGSA) dendrimer, entrapped a photosensitizer, protoporphyrin IX (PpIX) inside the system and investigated whether the photodynamic efficacy of the anionic surface charged dendrimer-PpIX nano formulation is enhanced than achieved by the free PpIX in HeLa cancer cell lines. Moreover, the Reactive oxygen species (ROS) production was monitored using 2‧,7‧-dichlorodihydrofluorescein diacetate (H2DCF-DA)- ROS Marker with phase contrast microscopy for the IC50 values of free and dendrimer-PpIX nano formulation. Similarly, the mode of cell death has been confirmed by cell cycle analysis for the same. For the in vitro PDT application, we have used a simple light source (Light Emitting Diode) with a power of 30-50 mW for 20 min irradiation. Hence, in this study we have taken steps to report this anionic drug delivery system is good to consider for the photodynamic therapy applications with the photosensitizer, PpIX which satisfied the prime requirement of PDT.

  16. A Perspective on Development Flight Instrumentation and Flight Test Analysis Plans for Ares I-X

    Science.gov (United States)

    Huebner, Lawrence D.; Richards, James S.; Brunty, Joseph A.; Smith, R. Marshall; Trombetta, Dominic R.

    2009-01-01

    NASA. s Constellation Program will take a significant step toward completion of the Ares I crew launch vehicle with the flight test of Ares I-X and completion of the Ares I-X post-flight evaluation. The Ares I-X flight test vehicle is an ascent development flight test that will acquire flight data early enough to impact the design and development of the Ares I. As the primary customer for flight data from the Ares I-X mission, Ares I has been the major driver in the definition of the Development Flight Instrumentation (DFI). This paper focuses on the DFI development process and the plans for post-flight evaluation of the resulting data to impact the Ares I design. Efforts for determining the DFI for Ares I-X began in the fall of 2005, and significant effort to refine and implement the Ares I-X DFI has been expended since that time. This paper will present a perspective in the development and implementation of the DFI. Emphasis will be placed on the process by which the list was established and changes were made to that list due to imposed constraints. The paper will also discuss the plans for the analysis of the DFI data following the flight and a summary of flight evaluation tasks to be performed in support of tools and models validation for design and development.

  17. Homoclinic chaos in axisymmetric Bianchi IX cosmologies reexamined

    International Nuclear Information System (INIS)

    Soares, I. Damiao; Stuchi, T.J.

    2005-01-01

    The dynamics of Bianchi IX models with two scale factors A(t) and B(t) is reexamined. The matter content of the model is assumed to be comoving dust plus a positive cosmological constant. We make a complete numerical construction of topological structures present in the phase space of the model, as the center manifold of periodic orbits and the stable and unstable cylinders of orbits that emerge from the center manifold, associated to a saddle-center critical point. We exhibit the homoclinic intersections of the unstable and stable cylinders that produce homoclinic chaos in the models. A=0 is not a singularity of the Hamiltonian dynamics and any truncation of the dynamics at A=0 is bound to a loss of information. We make an explicit construction of a set with a horseshoe structure in the A>0 region, of initial conditions corresponding to initially expanding universes. We show that the dynamics of this set is chaotic even if restricted to the region A>0 and has the Einstein universe configuration as a chaotic scatterer. The result however demands the information of the Hamiltonian dynamics in whole phase space, including the region A<0. This refutes recent claims that no homoclinic chaos is present in the dynamics of the model

  18. Role of Zinc in Catalytic Activity of Carbonic Anhydrase IX

    Science.gov (United States)

    Tu, Chingkuang; Foster, Lauren; Alvarado, Andrea; McKenna, Robert; Silverman, David N.; Frost, Susan C.

    2012-01-01

    The carbonic anhydrases (CAs) in the α class are zinc-dependent metalloenzymes. Previous studies have reported that recombinant forms of carbonic anhydrase IX (CAIX), a membrane-bound form of CA expressed in solid tumors, appear to be activated by low levels of zinc independent of its well-studied role at the catalytic site. In this study, we sought to determine if CAIX is stimulated by zinc in its native environment. MDA-MB-231 breast cancer cells express CAIX in response to hypoxia. We compared CAIX activity associated with membrane ghosts isolated from hypoxic cells with that in intact hypoxic cells. We measured CA activity directly using 18O exchange from 13CO2 into water determined by membrane inlet mass spectrometry. In membrane ghosts, there was little effect of zinc at low concentrations on CAIX activity, although at high concentration zinc was inhibitory. In intact cells, zinc had no significant effect on CAIX activity. This suggests that there is an appreciable decrease in sensitivity to zinc when CAIX is in its natural membrane milieu compared to the purified forms. PMID:22465027

  19. Oscillating Bianchi IX universe in Horava-Lifshitz gravity

    International Nuclear Information System (INIS)

    Misonoh, Yosuke; Maeda, Kei-ichi; Kobayashi, Tsutomu

    2011-01-01

    We study a vacuum Bianchi IX universe in the context of Horava-Lifshitz gravity. In particular, we focus on the classical dynamics of the universe and analyze how anisotropy changes the history of the universe. For small anisotropy, we find an oscillating universe as well as a bounce universe just as the case of the Friedmann-Lemaitre-Robertson-Walker spacetime. However, if the initial anisotropy is large, we find the universe which ends up with a big crunch after oscillations if a cosmological constant Λ is zero or negative. For Λ>0, we find a variety of histories of the universe, that is a de Sitter expanding universe after oscillations in addition to the oscillating solution and the previous big crunch solution. This fate of the universe shows sensitive dependence of initial conditions, which is one of the typical properties of a chaotic system. If the initial anisotropy is near the upper bound, we find the universe starting from a big bang and ending up with a big crunch for Λ≤0, and a de Sitter expanding universe starting from a big bang for Λ>0.

  20. Lyman Alpha Control

    CERN Document Server

    Nielsen, Daniel Stefaniak

    2015-01-01

    This document gives an overview of how to operate the Lyman Alpha Control application written in LabVIEW along with things to watch out for. Overview of the LabVIEW code itself as well as the physical wiring of and connections from/to the NI PCI-6229 DAQ box is also included. The Lyman Alpha Control application is the interface between the ALPHA sequencer and the HighFinesse Wavelength Meter as well as the Lyman Alpha laser setup. The application measures the wavelength of the output light from the Lyman Alpha cavity through the Wavelength Meter. The application can use the Wavelength Meter’s PID capabilities to stabilize the Lyman Alpha laser output as well as switch between up to three frequencies.

  1. New ALPHA-2 magnet

    CERN Multimedia

    Anaïs Schaeffer

    2012-01-01

    On 21 June, members of the ALPHA collaboration celebrated the handover of the first solenoid designed for the ALPHA-2 experiment. The magnet has since been successfully installed and is working well.   Khalid Mansoor, Sumera Yamin and Jeffrey Hangst in front of the new ALPHA-2 solenoid. “This was the first of three identical solenoids that will be installed between now and September, as the rest of the ALPHA-2 device is installed and commissioned,” explains ALPHA spokesperson Jeffrey Hangst. “These magnets are designed to allow us to transfer particles - antiprotons, electrons and positrons - between various parts of the new ALPHA-2 device by controlling the transverse size of the particle bunch that is being transferred.” Sumera Yamin and Khalid Mansoor, two Pakistani scientists from the National Centre for Physics in Islamabad, came to CERN in February specifically to design and manufacture these magnets. “We had the chance to work on act...

  2. Alpha Shapes and Proteins

    DEFF Research Database (Denmark)

    Winter, Pawel; Sterner, Henrik; Sterner, Peter

    2009-01-01

    We provide a unified description of (weighted) alpha shapes, beta shapes and the corresponding simplicialcomplexes. We discuss their applicability to various protein-related problems. We also discuss filtrations of alpha shapes and touch upon related persistence issues.We claim that the full...... potential of alpha-shapes and related geometrical constructs in protein-related problems yet remains to be realized and verified. We suggest parallel algorithms for (weighted) alpha shapes, and we argue that future use of filtrations and kinetic variants for larger proteins will need such implementation....

  3. Apoptosis-induced ectodomain shedding of hypoxia-regulated carbonic anhydrase IX from tumor cells: a double-edged response to chemotherapy

    International Nuclear Information System (INIS)

    Vidlickova, Ivana; Dequiedt, Franck; Jelenska, Lenka; Sedlakova, Olga; Pastorek, Michal; Stuchlik, Stanislav; Pastorek, Jaromir; Zatovicova, Miriam; Pastorekova, Silvia

    2016-01-01

    Carbonic anhydrase IX (CA IX) is a tumor-associated, highly active, transmembrane carbonic anhydrase isoform regulated by hypoxia and implicated in pH control and adhesion-migration-invasion. CA IX ectodomain (ECD) is shed from the tumor cell surface to serum/plasma of patients, where it can signify cancer prognosis. We previously showed that the CA IX ECD release is mediated by disintegrin and metalloproteinase ADAM17. Here we investigated the CA IX ECD shedding in tumor cells undergoing apoptosis in response to cytotoxic drugs, including cycloheximide and doxorubicin. Presence of cell surface CA IX was correlated to the extent of apoptosis by flow cytometry in cell lines with natural or ectopic CA IX expression. CA IX ECD level was assessed by ELISA using CA IX-specific monoclonal antibodies. Effect of recombinant CA IX ECD on the activation of molecular pathways was evaluated using the cell-based dual-luciferase reporter assay. We found a significantly lower occurrence of apoptosis in the CA IX-positive cell subpopulation than in the CA IX-negative one. We also demonstrated that the cell-surface CA IX level dropped during the death progress due to an increased ECD shedding, which required a functional ADAM17. Inhibitors of metalloproteinases reduced CA IX ECD shedding, but not apoptosis. The CA IX ECD release induced by cytotoxic drugs was connected to elevated expression of CA IX in the surviving fraction of cells. Moreover, an externally added recombinant CA IX ECD activated a pathway driven by the Nanog transcription factor implicated in epithelial-mesenchymal transition and stemness. These findings imply that the increased level of the circulating CA IX ECD might be useful as an indicator of an effective antitumor chemotherapy. Conversely, elevated CA IX ECD might generate unwanted effects through autocrine/paracrine signaling potentially contributing to resistance and tumor progression

  4. Targeted Alpha Therapy: From Alpha to Omega

    International Nuclear Information System (INIS)

    Allen, Barry J; Clarke, Raymond; Huang Chenyu

    2013-01-01

    This review covers the broad spectrum of Targeted Alpha Therapy (TAT) research in Australia; from in vitro and in vivo studies to clinical trials. The principle of tumour anti-vascular alpha therapy (TAVAT) is discussed in terms of its validation by Monte Carlo calculations of vascular models and the potential role of biological dosimetry is examined. Summmary of this review is as follows: 1. The essence of TAT 2. Therapeutic objectives 3. TAVAT and Monte Carlo microdosimetry 4. Biological dosimetry 5. Preclinical studies 6. Clinical trials 7. What next? 8. Obstacles. (author)

  5. Protoporphyrin IX fluorescence for enhanced photodynamic diagnosis and photodynamic therapy in murine models of skin and breast cancer

    Science.gov (United States)

    Rollakanti, Kishore Reddy

    Protoporphyrin IX (PpIX) is a photosensitizing agent derived from aminolevulinic acid. PpIX accumulates specifically within target cancer cells, where it fluoresces and produces cytotoxic reactive oxygen species. Our aims were to employ PpIX fluorescence to detect squamous cell carcinoma (SCC) of the skin (Photodynamic diagnosis, PDD), and to improve treatment efficacy (Photodynamic therapy, PDT) for basal cell carcinoma (BCC) and cutaneous breast cancer. Hyperspectral imaging and a spectrometer based dosimeter system were used to detect very early SCC in UVB-irradiated murine skin, using PpIX fluorescence. Regarding PDT, we showed that low non-toxic doses of vitamin D, given before ALA application, increase tumor specific PpIX accumulation and sensitize BCC and breast cancer cells to ALA-PDT. These optical imaging methods and the combination therapy regimen (vitamin D and ALA-PDT) are promising tools for effective management of skin and breast cancer.

  6. The lower cranial nerves: IX, X, XI, XII.

    Science.gov (United States)

    Sarrazin, J-L; Toulgoat, F; Benoudiba, F

    2013-10-01

    The lower cranial nerves innervate the pharynx and larynx by the glossopharyngeal (CN IX) and vagus (CN X) (mixed) nerves, and provide motor innervation of the muscles of the neck by the accessory nerve (CN XI) and the tongue by the hypoglossal nerve (CN XII). The symptomatology provoked by an anomaly is often discrete and rarely in the forefront. As with all cranial nerves, the context and clinical examinations, in case of suspicion of impairment of the lower cranial nerves, are determinant in guiding the imaging. In fact, the impairment may be located in the brain stem, in the peribulbar cisterns, in the foramens or even in the deep spaces of the face. The clinical localization of the probable seat of the lesion helps in choosing the adapted protocol in MRI and eventually completes it with a CT-scan. In the bulb, the intra-axial pathology is dominated by brain ischemia (in particular, with Wallenberg syndrome) and multiple sclerosis. Cisternal pathology is tumoral with two tumors, schwannoma and meningioma. The occurrence is much lower than in the cochleovestibular nerves as well as the leptomeningeal nerves (infectious, inflammatory or tumoral). Finally, foramen pathology is tumoral with, outside of the usual schwannomas and meningiomas, paragangliomas. For radiologists, fairly hesitant to explore these lower cranial pairs, it is necessary to be familiar with (or relearn) the anatomy, master the exploratory technique and be aware of the diagnostic possibilities. Copyright © 2013 Éditions françaises de radiologie. Published by Elsevier Masson SAS. All rights reserved.

  7. A new peptide ligand for targeting human carbonic anhydrase IX, identified through the phage display technology.

    Directory of Open Access Journals (Sweden)

    Vasileios Askoxylakis

    2010-12-01

    Full Text Available Carbonic anhydrase IX (CAIX is a transmembrane enzyme found to be overexpressed in various tumors and associated with tumor hypoxia. Ligands binding this target may be used to visualize hypoxia, tumor manifestation or treat tumors by endoradiotherapy.Phage display was performed with a 12 amino acid phage display library by panning against a recombinant extracellular domain of human carbonic anhydrase IX. The identified peptide CaIX-P1 was chemically synthesized and tested in vitro on various cell lines and in vivo in Balb/c nu/nu mice carrying subcutaneously transplanted tumors. Binding, kinetic and competition studies were performed on the CAIX positive human renal cell carcinoma cell line SKRC 52, the CAIX negative human renal cell carcinoma cell line CaKi 2, the human colorectal carcinoma cell line HCT 116 and on human umbilical vein endothelial cells (HUVEC. Organ distribution studies were carried out in mice, carrying SKRC 52 tumors. RNA expression of CAIX in HCT 116 and HUVEC cells was investigated by quantitative real time PCR.In vitro binding experiments of (125I-labeled-CaIX-P1 revealed an increased uptake of the radioligand in the CAIX positive renal cell carcinoma cell line SKRC 52. Binding of the radioligand in the colorectal carcinoma cell line HCT 116 increased with increasing cell density and correlated with the mRNA expression of CAIX. Radioligand uptake was inhibited up to 90% by the unlabeled CaIX-P1 peptide, but not by the negative control peptide octreotide at the same concentration. No binding was demonstrated in CAIX negative CaKi 2 and HUVEC cells. Organ distribution studies revealed a higher accumulation in SKRC 52 tumors than in heart, spleen, liver, muscle, intestinum and brain, but a lower uptake compared to blood and kidney.These data indicate that CaIX-P1 is a promising candidate for the development of new ligands targeting human carbonic anhydrase IX.

  8. Alpha1-antitrypsin deficiency

    DEFF Research Database (Denmark)

    Stolk, Jan; Seersholm, Niels; Kalsheker, Noor

    2006-01-01

    The Alpha One International Registry (AIR), a multinational research program focused on alpha1-antitrypsin (AAT) deficiency, was formed in response to a World Health Organization recommendation. Each of the nearly 20 participating countries maintains a national registry of patients with AAT defic...... epidemiology, inflammatory and signalling processes, therapeutic advances, and lung imaging techniques....

  9. Alpha clustering in nuclei

    International Nuclear Information System (INIS)

    Hodgson, P.E.

    1990-01-01

    The effects of nucleon clustering in nuclei are described, with reference to both nuclear structure and nuclear reactions, and the advantages of using the cluster formalism to describe a range of phenomena are discussed. It is shown that bound and scattering alpha-particle states can be described in a unified way using an energy-dependent alpha-nucleus potential. (author)

  10. Monitoring the non-radiative relaxation time of PpIX solution with Au nanoparticles using Photoacoustic Spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Jimenez-Perez, J.L. [CICATA-IPN, Legaria 694, Mexico D.F. 11500 (Mexico)], E-mail: jimenezp@fis.cinvestav.mx; Cruz-Orea, A. [Departamento de Fisica, CINVESTAV-IPN, A.P. 14-740, Mexico D.F. 07360 (Mexico); Alvarado, E. Maldonado [Environment Citopathology Laboratory, Morphology Departament, Escuela Nacional de Ciencias Biologicas del IPN, Carpio y Plan de Ayala S/N, Col. Sto. Tomas, C.P. 11340, Mexico D.F. Mexico (Mexico); Ramirez, J.F. Sanchez [CICATA-IPN, Legaria 694, Mexico D.F. 11500 (Mexico); Departamento de Fisica, CINVESTAV-IPN, A.P. 14-740, Mexico D.F. 07360 (Mexico); Ramon-Gallegos, E. [Environment Citopathology Laboratory, Morphology Departament, Escuela Nacional de Ciencias Biologicas del IPN, Carpio y Plan de Ayala S/N, Col. Sto. Tomas, C.P. 11340, Mexico D.F. Mexico (Mexico); Mendoza-Alvarez, J.G. [Departamento de Fisica, CINVESTAV-IPN, A.P. 14-740, Mexico D.F. 07360 (Mexico)

    2008-11-30

    In this work we have used the Photoacoustic Spectroscopy (PAS) to determine in vitro the non-radiative relaxation time (NRRT) of a protoporphyrin IX (PpIX) standard solution and samples of PpIX(1), PpIX(2) and PpIX(3) with Au nanoparticle concentrations of 0.001008, 0.00504 and 0.01008 mmol in 25 mL of water respectively. We have used PpIX disodium salt (DS) solution of 25% HCl. The results show that the NRRT average values, obtained for each one of the solution were: {tau} = 29 {+-} 0.001, 84 {+-} 0.001 and 62 {+-} 0.009 ms for PpIX(1), PpIX(2) and PpIX(3), respectively. These values were compared with some NRRT of triplet states reported in the literature for molecules with tetrapyrrolic structure, increasing the NRRT considerably. From each solution it was obtained its PAS signal phase as a function of the light modulation frequency from 17 to 80 Hz. UV-vis spectrophotometer, photoluminescence spectroscopy and Transmission Electron Microscopy (TEM) were used in order to obtain the optical absorption spectra, the photoluminescence intensities, and the gold nanoparticle sizes respectively. Our investigations are devoted to improve the thermal treatments of drugs the porphyrins as photosensitizers used in image photodynamic therapy.

  11. Genetics Home Reference: alpha thalassemia

    Science.gov (United States)

    ... Facebook Twitter Home Health Conditions Alpha thalassemia Alpha thalassemia Printable PDF Open All Close All Enable Javascript to view the expand/collapse boxes. Description Alpha thalassemia is a blood disorder that reduces the production ...

  12. White light-informed optical properties improve ultrasound-guided fluorescence tomography of photoactive protoporphyrin IX

    Science.gov (United States)

    Flynn, Brendan P.; DSouza, Alisha V.; Kanick, Stephen C.; Davis, Scott C.; Pogue, Brian W.

    2013-04-01

    Subsurface fluorescence imaging is desirable for medical applications, including protoporphyrin-IX (PpIX)-based skin tumor diagnosis, surgical guidance, and dosimetry in photodynamic therapy. While tissue optical properties and heterogeneities make true subsurface fluorescence mapping an ill-posed problem, ultrasound-guided fluorescence-tomography (USFT) provides regional fluorescence mapping. Here USFT is implemented with spectroscopic decoupling of fluorescence signals (auto-fluorescence, PpIX, photoproducts), and white light spectroscopy-determined bulk optical properties. Segmented US images provide a priori spatial information for fluorescence reconstruction using region-based, diffuse FT. The method was tested in simulations, tissue homogeneous and inclusion phantoms, and an injected-inclusion animal model. Reconstructed fluorescence yield was linear with PpIX concentration, including the lowest concentration used, 0.025 μg/ml. White light spectroscopy informed optical properties, which improved fluorescence reconstruction accuracy compared to the use of fixed, literature-based optical properties, reduced reconstruction error and reconstructed fluorescence standard deviation by factors of 8.9 and 2.0, respectively. Recovered contrast-to-background error was 25% and 74% for inclusion phantoms without and with a 2-mm skin-like layer, respectively. Preliminary mouse-model imaging demonstrated system feasibility for subsurface fluorescence measurement in vivo. These data suggest that this implementation of USFT is capable of regional PpIX mapping in human skin tumors during photodynamic therapy, to be used in dosimetric evaluations.

  13. Prognostic Relevance of the Expression of CA IX, GLUT-1, and VEGF in Ovarian Epithelial Cancers.

    Science.gov (United States)

    Kim, Kyungbin; Park, Won Young; Kim, Jee Yeon; Sol, Mee Young; Shin, Dong Hun; Park, Do Youn; Lee, Chang Hun; Lee, Jeong Hee; Choi, Kyung Un

    2012-12-01

    Tumor hypoxia is associated with malignant progression and treatment resistance. Hypoxia-related factors, such as carbonic anhydrase IX (CA IX), glucose transporter-1 (GLUT-1), and vascular endothelial growth factor (VEGF) permit tumor cell adaptation to hypoxia. We attempted to elucidate the correlation of these markers with variable clinicopathological factors and overall prognosis. Immunohistochemistry for CA IX, GLUT-1, and VEGF was performed on formalin-fixed, paraffin-embedded tissues from 125 cases of ovarian epithelial cancer (OEC). CA IX expression was significantly associated with an endometrioid and mucinous histology, nuclear grade, tumor necrosis, and mitosis. GLUT-1 expression was associated with tumor necrosis and mitosis. VEGF expression was correlated only with disease recurrence. Expression of each marker was not significant in terms of overall survival in OECs; however, there was a significant correlation between poor overall survival rate and high coexpression of these markers. The present study suggests that it is questionable whether CA IX, GLUT-1, or VEGF can be used alone as independent prognostic factors in OECs. Using at least two markers helps to predict patient outcomes in total OECs. Moreover, the inhibition of two target gene combinations might prove to be a novel anticancer therapy.

  14. Evaluation of the potential inhibitor of Ix (Pp-Ix) protoporphyrin of the genetic damage induced by gamma rays administered to different dose reasons in Drosophila melanogaster; Evaluacion del potencial inhibidor de la protoporfirina IX (PP-IX) del dano genetico inducido por rayos gama administrados a diferentes razones de dosis en Drosophila melanogaster

    Energy Technology Data Exchange (ETDEWEB)

    Flores A, J. A.

    2016-10-01

    Ionizing radiation can damage in DNA directly or indirectly by free radicals (Rl), characterized by unstable and highly reactive. To avoid damage by Rl the cell has endogenous antioxidants such as Sod, Cat, GSH or exogenous as some vitamins, but if with these mechanisms does not reach the cell homeostasis, the consequence may be the generation of chronic-disease degenerative such as cancer. This study was conducted in order to test the inhibitory role of Rl protoporphyrin Ix (Pp-Ix), induced by 20 Gy of gamma rays administered at different dose ratios using the assay of somatic mutation and recombination in the Drosophila wing. The results indicated that 20 Gy delivered at a rate of low dose (6.659 Gy/h), caused elevated frequencies of genetic damage (p <0.001), compared with those that induced a high dose reason (1111.42 Gy/h) in larvae of 48 h old. The difference is probably due to an indirect damage by Rl; when this hypothesis was approved with the possible inhibitor role of Pp-Ix (0.69 m M), damage was increased with the two reasons of tested doses. This result may be due to: 1) the Pp-Ix is not a good inhibitor of Rl, 2) the difference in the frequency of mutation found with both dose reasons, not due to Rl so that this compound did not reduce the genetic damage, and 3) that Pp-Ix acts as pro oxidant. (Author)

  15. Alpha Thalassemia (For Parents)

    Science.gov (United States)

    ... the body has a problem producing alpha globin Beta thalassemia : when the body has a problem producing beta ... Transfusion Blood Test: Hemoglobin Electrophoresis Sickle Cell Disease Beta Thalassemia Blood All About Genetics Prenatal Genetic Counseling Genetic ...

  16. Genetic fusion to albumin improves the pharmacokinetic properties of factor IX.

    Science.gov (United States)

    Metzner, Hubert J; Weimer, Thomas; Kronthaler, Ulrich; Lang, Wiegand; Schulte, Stefan

    2009-10-01

    Haemophilia B is a X-chromosome linked disease characterised by a deficiency of functionally active coagulation Factor IX (FIX). Patients with severe haemophilia B at risk of recurrent bleeding are treated approximately twice a week in a prophylactic setting by application of FIX concentrates. To increase convenience and compliance of the therapy it is desirable to reduce the dosing frequency by improving the pharmacokinetic properties of FIX. Here a concept of rFIX (recombinant factor IX) albumin fusion proteins (rIX-FPs) with cleavable linker peptides derived from the FIX activation sequence is presented. Constructs of the genetic fusion of FIX to albumin via cleavable linkers were expressed in mammalian cells and characterised after purification. In vitro activation studies with FXIa demonstrated that cleavage of the linker and the activation peptide proceeded comparably well. In a clotting assay the rIX-FPs with cleavable linker showed a 10- to 30-fold increase in the molar specific clotting activity compared to fusion proteins with non-cleavable linkers. Furthermore, in-vivo recovery, terminal half-life and the AUC of rIX-FPs in rats and rabbits as determined by FIX antigen measurements were significantly increased compared to rFIX (BeneFIX). In FIX deficient (FIX(-/-)) mice the in-vivo recovery and the AUC were also significantly increased. The efficacy in reducing bleeding time was shown in FIX(-/-) mice by a tail tip bleeding model. The results suggest that rIX-FPs with a cleavable linker between FIX and albumin are a promising concept that may support the use of the albumin fusion technology to extend the half-life of FIX.

  17. Drug design studies of the novel antitumor targets carbonic anhydrase IX and XII.

    Science.gov (United States)

    Guler, O Ozensoy; De Simone, G; Supuran, C T

    2010-01-01

    The carbonic anhydrase (CA, EC 4.2.1.1) isozymes IX and XII are predominantly found in tumor cells and show a restricted expression in normal tissues. By efficiently hydrating carbon dioxide to protons and bicarbonate, these CAs contribute significantly to the extracellular acidification of solid tumors. CA IX and XII are overexpressed in many such tumors in response to the hypoxia inducible factor (HIF) pathway, and research on the involvement of these isozymes in cancer has progressed in recent years. The report of the X-ray crystal structure of CA IX, which is a dimeric protein with a quaternary structure not evidenced earlier for this family of enzymes, allows for structure-based drug design campaigns of inhibitors against this novel antitumor target. Indeed, it has been known for some time that aromatic/ heterocyclic sulfonamides and sulfamates have good affinity for this isoform, but generally they do not show specificity for the inhibition of the tumor-associated isoform versus the remaining CA isozymes (CA I-VII, and XII-XV) found in mammals. Recently, we reported several classes of compounds with good selectivity for the tumor-associated CAs, being shown that CA IX/XII inhibition reverses the effect of tumor acidification, leading to inhibition of the cancer cells growth. CA IX/XII are now proposed as novel therapeutic antitumor targets. Furthermore, as some types of CA inhibitors (CAIs), such as the fluorescent sulfonamides accumulate only in hypoxic tumor cells overexpressing these enzymes, CAIs may be also used as diagnostic tools for imaging of hypoxic cancer cells. Work from several laboratories recently reported the proof-of-concept studies for the use of CA IX/XII inhibitors as well as antibodies both in the therapy and imaging of hypoxic tumors.

  18. Hubungan Gaya Kepemimpinan Orang Tua terhadap Hasil Belajar IPA Siswa Kelas IX SMPN 2 Batang Anai

    Directory of Open Access Journals (Sweden)

    Nelfi Erlinda

    2017-02-01

    Full Text Available AbstractPenelitian ini dilatarbelakangi oleh rendahnya hasil belajar IPA siswa kelas IX SMPN 2 Batang Anai. Faktor penyebabnya ada yang berasal dari dalam diri siswa dan dari luar diri siswa. Faktor yang berasal dari dalam diri siswa seperti malas belajar. Faktor luar diri siswa seperti faktor lingkungan keluarga yang terdiri dari faktor orang tua, suasana keluarga, lingkungan keluarga, kondisi keluarga yang tidak sehat atau broken home. Hal ini berpengaruh dalam proses belajar dan hasil belajar siswa di sekolah. Penelitian ini bertujuan untuk mengetahui hubungan gaya kepemimpinan orang tua terhadap hasil belajar IPA siswa kelas IX SMPN 2 Batang Anai. Jenis penelitian ini adalah penelitian deskriptif. Populasi penelitian adalah semua siswa kelas IX SMPN 2 Batang Anai yang terdaftar dalam tahun ajaran  2016/2017. Sampel penelitian adalah semua kelas IX SMPN 2 Batang Anai. Teknik pengambilan sampel menggunakan total sampling. Instrumen penelitian yang digunakan berupa angket atau kuesioner yang diberikan ke siswa. Teknik analisis data yang digunakan untuk menguji hipotesis adalah analisis korelasi dengan menggunakan uji chi kuadrat untuk melihat antara hubungan gaya kepemimpinan oramg tua dengan hasil belajar IPA siswa kelas IX SMPN 2 Batang Anai. Berdasarkan analisis data didapatkan dua gaya kepemimpimam yaitu otoriter dan demokratis. Hasil uji hipotesis diperoleh X2hitung < X2tabel = 0,004 < 3,841  sehingga hipotesis Ho diterima pada taraf nyata 0,05 dan hipotesis Hi ditolak. Jadi tidak ada hubungan yang berarti antara gaya kepemimpinan orang tua terhadap hasil belajar IPA siswa kelas IX SMPN 2 Batang Anai. Kata kunci :  Gaya kepemimpinan orang tua, hasil belajar.

  19. Lacerations to Zones VIII and IX: It Is Not Just a Tendon Injury

    Directory of Open Access Journals (Sweden)

    Charla R. Fischer

    2011-01-01

    Full Text Available Extensor tendon injuries are widely believed to be straightforward problems that are relatively simple to manage. However, these injuries can be complex and demand a thorough understanding of anatomy to achieve the best functional outcomes. When lacerations occur in the forearm as in Zones VIII and IX injury, the repair of the extensor tendon and muscle, and posterior interosseous nerve (PIN is often challenging. A review of the literature shows little guidance and attention for these injuries. We present four patients with injuries to Zones VIII and IX as well as a review of surgical technique, postoperative rehabilitation, and pearls that may be of benefit to those managing these injuries.

  20. Optical observations of M81 galaxy group in narrow band [SII] and Hα filters: Holmberg IX

    Directory of Open Access Journals (Sweden)

    Arbutina B.

    2009-01-01

    Full Text Available We present observations of the nearby tidal dwarf galaxy Holmberg IX in M81 galaxy group in narrow band [SII] and Hα filters, carried out in March and November 2008 with the 2m RCC telescope at NAO Rozhen, Bulgaria. Our search for resident supernova remnants (identified as sources with enhanced [SII] emission relative to their Hα emission in this galaxy yielded no sources of this kind, besides M&H 10-11 or HoIX X-1. Nevertheless, we found a number of objects with significant H® emission that probably represent uncatalogued HII regions.

  1. IX Jornades d’educació emocional. Educació emocional i valors

    OpenAIRE

    Barredo Gutiérrez, Blanca; Bisquerra Alzina, Rafael; Blanco Cuch, Aida; Giner, Antoni; Pérez Escoda, Núria; Tey, Amèlia

    2013-01-01

    Barredo Gutierrez, B.; Bisquerra Alzina, R.; Blanco Cuch, A.; Giner Tarrida, A.; Perez Escoda, N.; Tey Teijón, A. (eds.) IX Jornades d’educació emocional. Educació emocional i valors / IX Jornadas de educación emocional. Educación emocional y valores. Barcelona, Universitat de Barcelona (Institut de Ciències de l’Educació), 2013. Document electrònic.valores. Barcelona, Universitat de Barcelona (Institut de Ciències de l’Educació), 2013. Document electrònic

  2. Los cuentos de adulterio del libro IX de las "Metamorfosis" de Apuleyo

    OpenAIRE

    Ruiz Sánchez, Marcos

    2000-01-01

    Las historias de adulterio del libro IX comparten una estructura basada en motivos tradicionales. Rasgos comunes a todos ellos son también el énfasis en la profesión del esposo y el uso dramático y simbólico de los objetos. The stories of adultery in Book IX of Apuleius' The Golden Ass share a structure based on traditional motifs. Common features to all of them include an emphasis on the husband's profession and the dramatic and symbolic use of objects.

  3. ALPHA-2: the sequel

    CERN Multimedia

    Katarina Anthony

    2012-01-01

    While many experiments are methodically planning for intense works over the long shutdown, there is one experiment that is already working at full steam: ALPHA-2. Its final components arrived last month and will completely replace the previous ALPHA set-up. Unlike its predecessor, this next generation experiment has been specifically designed to measure the properties of antimatter.   The ALPHA team lower the new superconducting solenoid magnet into place. The ALPHA collaboration is working at full speed to complete the ALPHA-2 set-up for mid-November – this will give them a few weeks of running before the AD shutdown on 17 December. “We really want to get some experience with this device this year so that, if we need to make any changes, we will have time during the long shutdown in which to make them,” says Jeffrey Hangst, ALPHA spokesperson. “Rather than starting the 2014 run in the commissioning stage, we will be up and running from the get go.&...

  4. Somatic mosaicism and female-to-female transmission in a kindred with hemophilia B (factor IX deficiency)

    International Nuclear Information System (INIS)

    Taylor, S.A.M.; Deugau, K.V.; Lillicrap, D.P.

    1991-01-01

    Studies have shown that hemophilia B (Christmas disease; factor IX deficiency) results from many different mutations in the factor IX gene, of which >95% are single nulceotide substitutions. This study has identified a previously unreported form of hemophilia B in a patient who was a somatic mosaic for a guanine-to-cytosine transversion at nucleotide 31,170 in the factor IX gene. This point mutation changes the codon for residue 350 in the catalytic domain of factor IX from a cysteine to a serine. The authors used differential termination of primer extension to confirm and measure the degree of mosaicism. The study shows that a varying proportion of cells from hepatic, renal, smooth muscle, and hematopoietic populations possessed normal as well as mutant factor IX sequences. These results indicate that the mutation in this patient occurred either as an uncorrected half-chromatid mutation in the female gamete or as a replication or postreplication error in the initial mitotic divisions of the zygote preceding implantation. In addition, this kindred also contains two females in successive generations who have moderately severe factor IX deficiency. The molecular pathogenesis of this latter phenomenon has been studied and seems to relate to the unaccompanied expression of the mutant factor IX gene consequent upon a second, as yet undefined, genetic event that has prevented inactivation of sequences including the mutant factor IX gene on the X chromosome inherited from the affected male

  5. 40 CFR Appendix Ix to Part 261 - Wastes Excluded Under §§ 260.20 and 260.22

    Science.gov (United States)

    2010-07-01

    ...) SOLID WASTES (CONTINUED) IDENTIFICATION AND LISTING OF HAZARDOUS WASTE Pt. 261, App. IX Appendix IX to... manage industrial solid waste. This exclusion was published on April 6, 1999.1. The constituent..., accurate and complete. In the event that any of this information is determined by EPA in its sole...

  6. "To Study the Relationship of Academic Stress and Socio-Economic Status among IX Standard Students of Raipur City"

    Science.gov (United States)

    Khan, Suhail Ahmed; Ayyub, Khan Farhat

    2013-01-01

    This paper focuses on the relationship between academic stress and socio-economic status among IX standard students. The research was carried out in Raipur City (Chhattisgarh) on a sample of 600 IX standard students of English and Hindi medium schools. Academic Stress was measured by Stress Inventory for School Students prepared by Seema Rani…

  7. Expression of triplicated and quadruplicated alpha globin genes in sheep.

    Science.gov (United States)

    Vestri, R; Pieragostini, E; Yang, F; di Gregorio, P; Rando, A; Masina, P

    1991-01-01

    In the sheep alpha alpha alpha globin gene haplotype, the three genes display from the 5' to the 3' end the percentage efficiencies of about 30:14:6, as indicated by the amounts of the three types of alpha chain produced in the alpha alpha alpha/alpha alpha alpha homozygotes. The 3' gene in the alpha alpha alpha alpha haplotype appears to have an efficiency around 1%, as suggested by analysis of one quadruple alpha homozygote. Moreover, the total outputs of the alpha alpha alpha as well as of the alpha alpha alpha alpha haplotypes do not substantially differ from that of the common alpha alpha haplotype.

  8. Protoporphyrin IX formation after topical application of methyl aminolaevulinate and BF-200 aminolaevulinic acid declines with age

    DEFF Research Database (Denmark)

    Nissen, C V; Philipsen, P A; Wulf, H C

    2015-01-01

    BACKGROUND: Topical photodynamic therapy (PDT) is a popular treatment modality in dermatology. The effect of PDT in epidermal cells depends on formation of protoporphyrin IX (PpIX) from 5-aminolevulinic acid (ALA). A variety of physiological changes in epidermal function occur with increasing age....... The volunteers were divided into two age groups: a young group under 55 years (range 18-54) and an older group over 55 years (range 65-85). PpIX formation was measured noninvasively every hour from 1-5 h, and after 18, 21 and 24 h. Skin phototype, stratum corneum hydration and ultraviolet (UV) damage were also...... the standard application time of 3 h (P hydration and UV damage were not associated with PpIX formation. The treatment efficacy of BCCs 3 months after MAL-PDT was higher in young patients (P =  0·012). CONCLUSIONS: PpIX formation in human skin...

  9. Crystal structure of the platelet activator convulxin, a disulfide-linked alpha4beta4 cyclic tetramer from the venom of Crotalus durissus terrificus.

    Science.gov (United States)

    Murakami, M T; Zela, S P; Gava, L M; Michelan-Duarte, S; Cintra, A C O; Arni, R K

    2003-10-17

    Convulxin (CVX), a C-type lectin, isolated from the venom of the South American rattlesnake Crotalus durissus terrificus, causes cardiovascular and respiratory disturbances and is a potent platelet activator which binds to platelet glycoprotein GPVI. The structure of CVX has been solved at 2.4A resolution to a crystallographic residual of 18.6% (R(free)=26.4%). CVX is a disulfide linked heterodimer consisting of homologous alpha and beta chains. The heterodimers are additionally linked by disulfide bridges to form cyclic alpha(4)beta(4)heterotetramers. These domains exhibit significant homology to the carbohydrate-binding domains of C-type lectins, to the factor IX-binding protein (IX-bp), and to flavocetin-A (Fl-A) but sequence and structural differences are observed in both the domains in the putative Ca(2+)and carbohydrate binding regions.

  10. Big Men on Campus: Administrative Response to Title IX and the Development of Women's Sports in the Big Ten Conference, 1972-1982

    Science.gov (United States)

    Ramsey, Jeffrey T.

    2014-01-01

    Signed into law in 1972, Title IX of the Education Amendments was designed to eliminate gender discrimination throughout the American educational system. Title IX applied to all educational programs at any level of schooling including admissions, financial aid, academic programs, and social organizations. However, Title IX has primarily been…

  11. Monte Carlo alpha calculation

    Energy Technology Data Exchange (ETDEWEB)

    Brockway, D.; Soran, P.; Whalen, P.

    1985-01-01

    A Monte Carlo algorithm to efficiently calculate static alpha eigenvalues, N = ne/sup ..cap alpha..t/, for supercritical systems has been developed and tested. A direct Monte Carlo approach to calculating a static alpha is to simply follow the buildup in time of neutrons in a supercritical system and evaluate the logarithmic derivative of the neutron population with respect to time. This procedure is expensive, and the solution is very noisy and almost useless for a system near critical. The modified approach is to convert the time-dependent problem to a static ..cap alpha../sup -/eigenvalue problem and regress ..cap alpha.. on solutions of a/sup -/ k/sup -/eigenvalue problem. In practice, this procedure is much more efficient than the direct calculation, and produces much more accurate results. Because the Monte Carlo codes are intrinsically three-dimensional and use elaborate continuous-energy cross sections, this technique is now used as a standard for evaluating other calculational techniques in odd geometries or with group cross sections.

  12. Quark matter coupled to domain walls in Bianchi types II, VIII and IX ...

    Indian Academy of Sciences (India)

    In this study of Bianchi types II, VIII and IX Universes, quark matter coupled to domain walls in the context of general relativity are explored. To obtain deterministic solution of the Einstein's field equations, various techniques are adopted. The features of the obtained solution are discussed.

  13. Two novel mutations in the PPIB gene cause a rare pedigree of osteogenesis imperfecta type IX.

    Science.gov (United States)

    Jiang, Yu; Pan, Jingxin; Guo, Dongwei; Zhang, Wei; Xie, Jie; Fang, Zishui; Guo, Chunmiao; Fang, Qun; Jiang, Weiying; Guo, Yibin

    2017-06-01

    Osteogenesis imperfecta (OI) is a rare genetic skeletal disorder characterized by increased bone fragility and vulnerability to fractures. PPIB is identified as a candidate gene for OI-IX, here we detect two pathogenic mutations in PPIB and analyze the genotype-phenotype correlation in a Chinese family with OI. Next-generation sequencing (NGS) was used to screen the whole exome of the parents of proband. Screening of variation frequency, evolutionary conservation comparisons, pathogenicity evaluation, and protein structure prediction were conducted to assess the pathogenicity of the novel mutations. Sanger sequencing was used to confirm the candidate variants. RTQ-PCR was used to analyze the PPIB gene expression. All mutant genes screened out by NGS were excluded except PPIB. Two novel heterozygous PPIB mutations (father, c.25A>G; mother, c.509G>A) were identified in relation to osteogenesis imperfecta type IX. Both mutations were predicted to be pathogenic by bioinformatics analysis and RTQ-PCR analysis revealed downregulated PPIB expression in the two carriers. We report a rare pedigree with an autosomal recessive osteogenesis imperfecta type IX (OI-IX) caused by two novel PPIB mutations identified for the first time in China. The current study expands our knowledge of PPIB mutations and their associated phenotypes, and provides new information on the genetic defects associated with this disease for clinical diagnosis. Copyright © 2017 Elsevier B.V. All rights reserved.

  14. Soluble form od carbonic anhydrase IX (CAIX) in transtitional cell carcinoma of urinary tract

    Czech Academy of Sciences Publication Activity Database

    Hyršl, L.; Závada, Jan; Závadová, Zuzana; Kawaciuk, I.; Veselý, S.; Skapa, P.

    2009-01-01

    Roč. 56, č. 4 (2009), s. 298-302 ISSN 0028-2685 Institutional research plan: CEZ:AV0Z40550506 Keywords : carbonic anhydrase IX * diagnostic antigen * transitional cell carcinoma Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 1.192, year: 2009

  15. Suggestions for Local School District Compliance with Title IX Rules and Regulations.

    Science.gov (United States)

    Arizona State Dept. of Education, Phoenix.

    This guidebook is designed to help local districts determine how well they comply with the spirit of the Title IX requirements against sex discrimination, which in turn could aid in compliance with the letter of the law. The document's first section presents samples of required antidiscrimination policy statements issued by two districts. The…

  16. Suppression of carbonic anhydrase IX leads to aberrant focal adhesion and decreased invasion of tumor cells

    Czech Academy of Sciences Publication Activity Database

    Radvak, P.; Repic, M.; Svastova, E.; Takacova, M.; Csaderova, L.; Strnad, Hynek; Pastorek, J.; Pastorekova, S.; Kopacek, J.

    2013-01-01

    Roč. 29, č. 3 (2013), s. 1147-1153 ISSN 1021-335X Institutional support: RVO:68378050 Keywords : carbonic anhydrase IX * hypoxia * shRNA silencing * microarray * focal adhesion Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 2.191, year: 2013

  17. Japanese contributions to IAEA INTOR workshop, phase two A, part 2, chapter IX: engineering

    International Nuclear Information System (INIS)

    Iida, Hiromasa; Seki, Masahiro; Sawada, Yoshio

    1985-07-01

    This report corresponds to Chapter IX of Japanese contribution report to IAEA INTOR Workshop, Phase Two A, Part 2. Data base assessment are made for systems engineering, magnet systems, torus systems, and NBI heating systems. R and D programme and impact on INTOR design are also specified. In addition to the data base assessment, studies have been made for several new tasks. (author)

  18. The Future of Electronic Power Processing and Conversion: Highlights from FEPPCON IX

    DEFF Research Database (Denmark)

    Enslin, Johan H.; Blaabjerg, Frede; Tan, Don F.D.

    2017-01-01

    Since 1991, every second year the IEEE Power Electronics Society (PELS) has organized the technical long-range planning meeting "Future of Electronic Power Processing and Conversion" (FEPPCON). FEPPCON IX was held 12-16 June 2017 in beautiful Kruger Park in South Africa (Figure 1). The overall go...

  19. One of Gibbs's ideas that has gone unnoticed (comment on chapter IX of his classic book)

    International Nuclear Information System (INIS)

    Sukhanov, Alexander D; Rudoi, Yurii G

    2006-01-01

    We show that contrary to the commonly accepted view, Chapter IX of Gibbs's book [1] contains the prolegomena to a macroscopic statistical theory that is qualitatively different from his own microscopic statistical mechanics. The formulas obtained by Gibbs were the first results in the history of physics related to the theory of fluctuations in any macroparameters, including temperature. (from the history of physics)

  20. Sex Discrimination and Intercollegiate Athletics: Putting Some Muscle on Title IX.

    Science.gov (United States)

    Yale Law Journal, 1979

    1979-01-01

    Argues that the general language of the Title IX statute, together with certain specific features of it, strongly suggests that the Department of Health, Education, and Welfare should develop more stringent and demanding regulations based on social policy considerations concerning sex discrimination in intercollegiate sports. Available from Yale…

  1. The Fourth Circuit Kicks a Hole through the Contact-Sport Exception to Title IX.

    Science.gov (United States)

    Puszczewicz, James

    2000-01-01

    Discusses a recent Fourth Circuit Court of Appeals decision that when individuals are allowed to try out for or join a team participating in a contact sport and operated for members of the other sex, then discrimination against because of their sex is prohibited by Title IX. (22 footnotes) (MLF)

  2. Title IX: Does Help for Women Come at the Expense of African Americans?

    Science.gov (United States)

    Greenlee, Craig T.

    1997-01-01

    Federal law that forbids sex discrimination in educational institutions receiving federal funds (Title IX) has created opportunities for women athletes, but some say men's sports have lost ground. Since athletics provide major educational opportunities for black men, less so for black women, critics are concerned blacks may be losing. (MSE)

  3. More than Title IX: How Equity in Education Has Shaped the Nation

    Science.gov (United States)

    Hanson, Katherine; Guilfoy, Vivian; Pillai, Sarita

    2009-01-01

    Women in America have come a long way in the last hundred years, from lacking the right to vote to holding some of the highest profile positions in the country. But this change has not come without struggle. "More Than Title IX" highlights the impact of one of the most powerful instruments of change--education. The book takes readers…

  4. Ares I-X Launch Vehicle Modal Test Measurements and Data Quality Assessments

    Science.gov (United States)

    Templeton, Justin D.; Buehrle, Ralph D.; Gaspar, James L.; Parks, Russell A.; Lazor, Daniel R.

    2010-01-01

    The Ares I-X modal test program consisted of three modal tests conducted at the Vehicle Assembly Building at NASA s Kennedy Space Center. The first test was performed on the 71-foot 53,000-pound top segment of the Ares I-X launch vehicle known as Super Stack 5 and the second test was performed on the 66-foot 146,000- pound middle segment known as Super Stack 1. For these tests, two 250 lb-peak electro-dynamic shakers were used to excite bending and shell modes with the test articles resting on the floor. The third modal test was performed on the 327-foot 1,800,000-pound Ares I-X launch vehicle mounted to the Mobile Launcher Platform. The excitation for this test consisted of four 1000+ lb-peak hydraulic shakers arranged to excite the vehicle s cantilevered bending modes. Because the frequencies of interest for these modal tests ranged from 0.02 to 30 Hz, high sensitivity capacitive accelerometers were used. Excitation techniques included impact, burst random, pure random, and force controlled sine sweep. This paper provides the test details for the companion papers covering the Ares I-X finite element model calibration process. Topics to be discussed include test setups, procedures, measurements, data quality assessments, and consistency of modal parameter estimates.

  5. Exact Bianchi type-VIII and type-IX cosmological models with matter and electromagnetic fields

    Science.gov (United States)

    Lorenz, Dieter

    1980-10-01

    Exact solutions of the Einstein-Maxwell equations of Bianchi types VIII and IX are derived. The solutions represent axisymmetric universes with source-free electromagnetic fields and the matter content of the models is a perfect fluid, with equation of state p=ɛ.

  6. Exact Bianchi type-VIII and type-IX cosmological models with matter and electromagnetic fields

    Energy Technology Data Exchange (ETDEWEB)

    Lorenz, D.

    1980-10-15

    Exact solutions of the Einstein-Maxwell equations of Bianchi types VIII and IX are derived. The solutions represent axisymmetric universes with source-free electromagnetic fields and the matter content of the models is a perfect fluid, with equation of state p=epsilon.

  7. Effect of a single fire on woody vegetation in Catchment IX ...

    African Journals Online (AJOL)

    Fire is a key driver in shaping and maintaining grasslands. Long-term exclusion of fire in moist grasslands has been attempted at Catchment IX (CIX) at Cathedral Peak since 1952. Vegetation was surveyed in 1952, 1973, 1986 and 2009. Woody colonisation into grasslands was the most noted change over time. The woody ...

  8. A New Resin Glycoside, Muricatin IX, from the Seeds of Ipomoea muricata.

    Science.gov (United States)

    Ono, Masateru; Taketomi, Saki; Kakiki, Yuichi; Yasuda, Shin; Okawa, Masafumi; Kinjo, Junei; Yoshimitsu, Hitoshi; Nohara, Toshihiro

    2016-01-01

    A new resin glycoside, named muricatin IX (1), was isolated from the seeds of Ipomoea muricata (L.) JACQ. (Convolvulaceae). The structure of 1 was determined on the basis of spectroscopic data as well as chemical evidence. Compound 1 is the first representative of resin glycosides in which an organic acid connects the sugar moiety and the aglycone moiety to form macrocyclic ester ring.

  9. Title IX, Girls' Sports Participation, and Adult Female Physical Activity and Weight

    Science.gov (United States)

    Kaestner, Robert; Xu, Xin

    2010-01-01

    Arguably, the most important school-based intervention to increase physical activity was Title IX of the Education Amendments of 1972, which led to a 600% increase in girls' sports participation between 1972 and 1978. We studied the effect of this increase in sports participation and athletic opportunities while young on the physical activity and…

  10. Immunohistochemical expression of GLUT-1, GLUT-3, and carbonic anhydrase IX in benign odontogenic lesions.

    Science.gov (United States)

    Vasconcelos, Roseane Carvalho; de Oliveira Moura, Jamile Marinho Bezerra; Lacerda Brasileiro Junior, Vilson; da Silveira, Éricka Janine Dantas; de Souza, Lélia Batista

    2016-10-01

    Some benign odontogenic lesions have a distinct biological behavior with high recurrence rates and local aggressive behavior. To determine whether glucose transporters proteins (GLUT-1 and GLUT-3) and carbonic anhydrase IX (CA IX) are associated with the development of as dentigerous cyst (DC), odontogenic keratocyst (OK), and ameloblastoma (AM), we evaluated the immunohistochemical expression of these proteins in these lesions. Immunoexpression of GLUT-1, GLUT-3, and CA IX was evaluated semiquantitative fields in each of the 20 cases of OK, AM, and DC. The cases were classified according to the scores: 0 (0% positive cells), 1 (50% of positive cells). The statistical analysis was performed using Pearson's chi-square, Kruskal-Wallis and Mann-Whitney tests. All cases were positive for GLUT-1 and 65% of OK showed scored 3. Staining was diffuse in 90% of OK and 85% of DC cases (P GLUT-3. Staining intensity for anhydrase was higher in the epithelium of DC when compared to OK (P = 0.01). Strong staining was observed in 55% of DC and 20% of OK samples (P = 0.01). These results suggest that GLUT-1 may be involved in the metabolic regulation of glucose in odontogenic lesions studied. In addition, CA IX appears to influence the development of AM, OK, and DC which can explain the differences their biological behavior. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  11. Teachers May Sue for Retaliation when They Challenge Title IX Sex Discrimination Practices in Schools

    Science.gov (United States)

    Essex, Nathan L.

    2005-01-01

    In a stunning 5-4 decision, the U.S. Supreme Court has held that teachers and coaches who suffer reprisals for raising complaints regarding illegal sex discrimination against their students can sue their school districts for damages. This ruling is unprecedented with respect to Title IX enforcement and will likely alter how school officials handle…

  12. Bianchi Type-IX viscous fluid cosmological model in general relativity

    Indian Academy of Sciences (India)

    Bianchi Type-IX viscous fluid cosmological model is investigated. To get a deterministic model, we have assumed the condition = ( is a constant) between metric potentials and where is the coefficient of shear viscosity and the scalar of expansion in the model. The coefficient of bulk viscosity () is taken as ...

  13. Action of the protoporphyrin-Ix (Pp-Ix) in the life period of Drosophila mutants deficient in endogenous antioxidants; Accion de la protoporfirina-IX (PP-IX) en el periodo de vida de mutantes de Drosophila deficientes en antioxidantes endogenos

    Energy Technology Data Exchange (ETDEWEB)

    Vidal E, L. M.

    2012-07-01

    The human being is daily exposed to free radicals or reactive oxygen species (Ros), as a result of the breathing and the interactions with xenobiotics that can cause irreversible lesions in molecules and cellular structures and that they are associated to diseases like the cancer, neuro degenerative and to the acceleration of the normal process of aging. Fortunately, to reduce the damaging effect of the Ros the cell has endogenous antioxidant systems constituted by antioxidant enzymes as: the superoxide dismutase (Sod), the catalase (Cat), and the glutathione peroxidase and reductase. Even, when these systems are not enough, we find to the exogenous antioxidants that cooperate in the balance of the Ros, as the porphyrins that include to the chlorophyllin, the hemin and the bilirubin among others. The protoporphyrin-Ix (Pp-Ix) is a tetra pyrrole without metallic center with antimutagenic and antioxidant activity similar to that of the chlorophyllin. However, is also known that their over-expression has toxic effects, because induces Ros. In Drosophila melanogaster, recently was found that the Pp-Ix have dual action anti and persistent mutagenic. One of their possible mechanism to act like mutagen is through the Ros induction. To evaluate this possibility and based in that the increase in the Ros levels can accelerate the aging process, in the present work the Pp-Ix role was evaluated, in the life period of Drosophila melanogaster strains deficient in Sod and Cat, sensitive to radiation or oxidative stress (rad, whd and flr{sup 3}) and a wild one as control (C-S). Females and males of each strain were treated chronically for separate with sucrose or Pp-Ix and every 15 days a group of each sex was irradiated with 10 Gy of gamma rays. The results indicated that the chronic treatment with Pp-Ix and in combination with radiation, increased the life period of the C-S strain. The Sod strain had a contrary effect and this effect was pronounced with the combined treatment of

  14. Effect of PpIX photoproducts formation on pO2 measurement by time-resolved delayed fluorescence spectroscopy of PpIX in solution and in vivo.

    Science.gov (United States)

    Huntosova, Veronika; Gerelli, Emmanuel; Zellweger, Matthieu; Wagnières, Georges

    2016-11-01

    The measurement of Protoporphyrin IX delayed fluorescence lifetime is a minimally invasive method for monitoring the levels of oxygen in cells and tissues. The excitation of Protoporphyrin IX during this measurement can lead to the formation of photoproducts in vitro and in vivo. The influence of their luminescence on the measured Protoporphyrin IX delayed fluorescence lifetimes was studied in solution and in vivo on the Chick's chorioallantoic membrane (CAM) model under various oxygen enriched air conditions (0mmHg, 37mmHg and 155mmHg). The presence of photoproducts disturbs such measurements since the delayed fluorescence emission of some of them spectrally overlaps with that of Protoporphyrin IX. One possible way to avoid this obstacle is to detect Protoporphyrin IX's delayed fluorescence lifetime in a very specific spectral range (620-640nm). Another possibility is to excite Protoporphyrin IX with light doses much lower than 10J/cm 2 , quite possibly as low as a fraction 1J/cm 2 at 405nm. This leads to an increased accuracy of pO 2 detection. Furthermore, this method allows combination of diagnosis and therapy in one step. This helps to improve detection systems and real-time identification of tissue respiration, which is tuned for the detection of PpIX luminescence and not its photoproducts. Copyright © 2016 Elsevier B.V. All rights reserved.

  15. Zinc protoporphyrin IX enhances chemotherapeutic response of hepatoma cells to cisplatin

    Science.gov (United States)

    Liu, Yang-Sui; Li, Huan-Song; Qi, Dun-Feng; Zhang, Jun; Jiang, Xin-Chun; Shi, Kui; Zhang, Xiao-Jun; Zhang, Xin-Hui

    2014-01-01

    AIM: To investigate the effect of zinc protoporphyrin IX on the response of hepatoma cells to cisplatin and the possible mechanism involved. METHODS: Cytotoxicity was determined using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Apoptosis was determined by a flow cytometric assay. Western blotting was used to measure protein expression. Heme oxygenase (HO)-1 activity was measured by determining the level of bilirubin generated in isolated microsomes. Reactive oxygen species (ROS) production was monitored by flow cytometry. Caspase-3 activity was measured with a colorimetric assay kit. Mice were inoculated with 1 × 107 tumor cells subcutaneously into the right flanks. All mice were sacrificed 6 wk after the first treatment and tumors were weighed and measured. RESULTS: Overexpression of HO-1 in HepG2 cell line was associated with increased chemoresistance to cis-diaminedichloroplatinum (cisplatin; CDDP) compared to other cell lines in vitro. Inhibition of HO-1 expression or activity by zinc protoporphyrin IX (ZnPP IX) markedly augmented CDDP-mediated cytotoxicity towards all liver cancer cell lines in vitro and in vivo. In contrast, induction of HO-1 with hemin increased resistance of tumor cells to CDDP-mediated cytotoxicity in vitro and in vivo. Furthermore, cells treated with ZnPP IX plus CDDP exhibited marked production of intracellular ROS and caspase-3 activity, which paralleled the incidence of cell apoptosis, whereas hemin decreased cellular ROS and caspase-3 activity induced by CDDP. CONCLUSION: ZnPP IX increases cellular sensitivity and susceptibility of liver cancer cell lines to CDDP and this may represent a mechanism of increasing ROS. PMID:25024611

  16. Monte Carlo alpha deposition

    International Nuclear Information System (INIS)

    Talley, T.L.; Evans, F.

    1988-01-01

    Prior work demonstrated the importance of nuclear scattering to fusion product energy deposition in hot plasmas. This suggests careful examination of nuclear physics details in burning plasma simulations. An existing Monte Carlo fast ion transport code is being expanded to be a test bed for this examination. An initial extension, the energy deposition of fast alpha particles in a hot deuterium plasma, is reported. The deposition times and deposition ranges are modified by allowing nuclear scattering. Up to 10% of the initial alpha particle energy is carried to greater ranges and times by the more mobile recoil deuterons. 4 refs., 5 figs., 2 tabs

  17. Buffett’s Alpha

    DEFF Research Database (Denmark)

    Frazzini, Andrea; Kabiller, David; Heje Pedersen, Lasse

    Berkshire Hathaway has realized a Sharpe ratio of 0.76, higher than any other stock or mutual fund with a history of more than 30 years, and Berkshire has a significant alpha to traditional risk factors. However, we find that the alpha becomes insignificant when controlling for exposures to Betting......-Against-Beta and Quality-Minus-Junk factors. Further, we estimate that Buffett’s leverage is about 1.6-to-1 on average. Buffett’s returns appear to be neither luck nor magic, but, rather, reward for the use of leverage combined with a focus on cheap, safe, quality stocks. Decomposing Berkshires’ portfolio into ownership...

  18. Lack of prognostic and predictive value of CA IX in radiotherapy of squamous cell carcinoma of the head and neck with known modifiable hypoxia

    DEFF Research Database (Denmark)

    Eriksen, Jesper Grau; Overgaard, Jens

    2007-01-01

    BACKGROUND AND PURPOSE: CA IX is suggested to be an endogenous marker of hypoxia in tumours like squamous cell carcinomas of the head and neck (HNSCC). The aim of the present study was to investigate whether CA IX served as a prognostic factor for outcome in a large population of HNSCC and if CA IX......+/-the hypoxic radiosensitizer nimorazole. CA IX was measured using immunohistochemistry and results were divided into four groups of CA IX expression: 30% of the tumour area with positive membrane staining. Locoregional control and disease-specific survival were used as endpoints...

  19. Efficient fluorescence detection of protoporphyrin IX in metastatic lymph nodes of murine colorectal cancer stained with indigo carmine.

    Science.gov (United States)

    Matsuo, Hisataka; Harada, Yoshinori; Minamikawa, Takeo; Kato, Yoshiyuki; Murayama, Yasutoshi; Otsuji, Eigo; Takamatsu, Tetsuro; Tanaka, Hideo

    2017-09-01

    Protoporphyrin IX (PpIX), a biochemical converted from 5-aminolevulinc acid (5-ALA) in living cells, is useful for intraoperative fluorescent detection of cancer metastasis in lymph nodes (LNs). However, unknown is whether the fluorescence of PpIX can be detected in the LNs when they coexist with indigo carmine, a blue dye commonly used for identification of sentinel LNs during surgery. To address this issue, we sought to evaluate the diagnostic usefulness of PpIX fluorescence in the presence of indigo carmine in a mouse LN metastasis model of rectal cancer after administration of 5-ALA. Spectral analysis of pure chemicals revealed that the absorption spectrum of indigo carmine widely overlapped with the fluorescence spectrum of PpIX specifically at the peak of 632nm, a common emission wavelength for detecting PpIX, but not at the other peak of 700nm. Due to such spectral overlap, the PpIX fluorescence intensity was significantly attenuated by mixture with indigo carmine at 632nm, but not at 700nm. Accordingly, fluorescent measurements of the mouse metastatic LN revealed more intense presentation of PpIX at 700nm than at 632nm, indicating that the diagnostic usefulness is greater at 700nm than at 632nm for the indigo carmine-dyed LNs after administration of 5-ALA. From these observations, we propose that the fluorescence measurement is more efficient at 700nm than at 632nm for detection of PpIX in metastatic LNs stained with indigo carmine. Copyright © 2017 Elsevier B.V. All rights reserved.

  20. Case Study - Alpha

    Directory of Open Access Journals (Sweden)

    Stephen Leybourne

    2016-11-01

    Full Text Available This case study was developed from an actual scenario by Dr. Steve Leybourne of Boston University.  The case documents the historical evolution of an organization, and has been used successfully in courses dealing with organizational and cultural change, and the utilization of ‘soft skills’ in project-based management. This is a short case, ideal for classroom use and discussion.  The issues are easily accessible to students, and there is a single wide ranging question that allows for the inclusion of many issues surrounding strategic decision-making, and behavioural and cultural change. Alpha was one of the earlier companies in the USA to invest in large, edge-of-town superstores, with plentiful free vehicle parking, selling food and related household products. Alpha was created in the 1950s as a subsidiary of a major publicly quoted retail group.  It started business by opening a string of very large discount stores in converted industrial and warehouse premises in the south of the United States. In the early days shoppers were offered a limited range of very competitively priced products. When Alpha went public in 1981 it was the fourth largest food retailer in the US, selling an ever-widening range of food and non-food products.  Its success continued to be based on high volume, low margins and good value for money, under the slogan of ‘Alpha Price.’

  1. Alpha-mannosidosis

    DEFF Research Database (Denmark)

    Borgwardt, Line; Stensland, Hilde Monica Frostad Riise; Olsen, Klaus Juul

    2015-01-01

    of the three subgroups of genotype/subcellular localisation and the clinical and biochemical data were done to investigate the potential relationship between genotype and phenotype in alpha-mannosidosis. Statistical analyses were performed using the SPSS software. Analyses of covariance were performed...

  2. Demystifying AlphaGo Zero as AlphaGo GAN

    OpenAIRE

    Dong, Xiao; Wu, Jiasong; Zhou, Ling

    2017-01-01

    The astonishing success of AlphaGo Zero\\cite{Silver_AlphaGo} invokes a worldwide discussion of the future of our human society with a mixed mood of hope, anxiousness, excitement and fear. We try to dymystify AlphaGo Zero by a qualitative analysis to indicate that AlphaGo Zero can be understood as a specially structured GAN system which is expected to possess an inherent good convergence property. Thus we deduct the success of AlphaGo Zero may not be a sign of a new generation of AI.

  3. $\\alpha$-Representation for QCD

    OpenAIRE

    Tuan, Richard Hong

    1998-01-01

    An $\\alpha$-parameter representation is derived for gauge field theories.It involves, relative to a scalar field theory, only constants and derivatives with respect to the $\\alpha$-parameters. Simple rules are given to obtain the $\\alpha$-representation for a Feynman graph with an arbitrary number of loops in gauge theories in the Feynman gauge.

  4. Alpha Theta Meditation: Phenomenological, neurophysiologic ...

    African Journals Online (AJOL)

    Alpha Theta Meditation: Phenomenological, neurophysiologic, mindfulness, mood, health and sport implications. ... the single alpha theta meditation was associated with elevated alpha and theta activity, as well as decrease in negative mood perceptions, especially with regard to anxiety, sadness and confusion scores.

  5. Alpha scintillation radon counting

    International Nuclear Information System (INIS)

    Lucas, H.F. Jr.

    1977-01-01

    Radon counting chambers which utilize the alpha-scintillation properties of silver activated zinc sulfide are simple to construct, have a high efficiency, and, with proper design, may be relatively insensitive to variations in the pressure or purity of the counter filling. Chambers which were constructed from glass, metal, or plastic in a wide variety of shapes and sizes were evaluated for the accuracy and the precision of the radon counting. The principles affecting the alpha-scintillation radon counting chamber design and an analytic system suitable for a large scale study of the 222 Rn and 226 Ra content of either air or other environmental samples are described. Particular note is taken of those factors which affect the accuracy and the precision of the method for monitoring radioactivity around uranium mines

  6. arXiv Proceedings, High-Precision $\\alpha_s$ Measurements from LHC to FCC-ee Geneva, Switzerland, October 2-13, 2015

    CERN Document Server

    d'Enterria, David; Alekhin, S.; Banfi, A.; Bethke, S.; Blümlein, J.; Chetyrkin, K.G.; Dissertori, G.; Garcia i Tormo, X.; Hoang, A.H.; Klasen, M.; Klijnsma, T.; Kluth, S.; Kneur, J.-L.; Kniehl, B.A.; Kolodrubetz, D.W.; Kühn, J.; Mackenzie, P.; Malaescu, B.; Mateu, V.; Mihaila, L.; Moch, S.; Mönig, K.; Pérez-Ramos, R.; Pich, A.; Pires, J.; Rabbertz, K.; Salam, G.P.; Sannino, F.; Soto i Riera, J.; Srebre, M.; Stewart, I.W.

    2015-01-01

    This document provides a writeup of all contributions to the workshop on "High precision measurements of $\\alpha_s$: From LHC to FCC-ee" held at CERN, Oct. 12--13, 2015. The workshop explored in depth the latest developments on the determination of the QCD coupling $\\alpha_s$ from 15 methods where high precision measurements are (or will be) available. Those include low-energy observables: (i) lattice QCD, (ii) pion decay factor, (iii) quarkonia and (iv) $\\tau$ decays, (v) soft parton-to-hadron fragmentation functions, as well as high-energy observables: (vi) global fits of parton distribution functions, (vii) hard parton-to-hadron fragmentation functions, (viii) jets in $e^\\pm$p DIS and $\\gamma$-p photoproduction, (ix) photon structure function in $\\gamma$-$\\gamma$, (x) event shapes and (xi) jet cross sections in $e^+e^-$ collisions, (xii) W boson and (xiii) Z boson decays, and (xiv) jets and (xv) top-quark cross sections in proton-(anti)proton collisions. The current status of the theoretical and experiment...

  7. The role of carbonic anhydrase IX in hypoxia control in OSCC.

    Science.gov (United States)

    Pérez-Sayáns, Mario; Supuran, Claudiu T; Pastorekova, Silvia; Suárez-Peñaranda, José Manuel; Pilar, Gayoso-Diz; Barros-Angueira, Francisco; Gándara-Rey, José Manuel; García-García, Abel

    2013-01-01

    Tumoral microenvironments play a key role in the evolution of solid tumors. Tumor hypoxia is actively involved in the promotion of genetic instability, the invasive capacity of tumor cells, metastasis, and a worsening of the clinical evolution. Endogenous hypoxia markers are controlled by hypoxia-related genes, formed by HIF-1, which is related to several target genes that involve the energy metabolism, angiogenesis, and transmembrane carbonic anhydrases (CAs), mainly CA-IX that is one of the tumor-related carbonic anhydrases. The goal of this paper is to establish the role of CA-IX as a hypoxia marker in OSCC, while analyzing its expression in this type of tumors and its relationship with several clinical and pathological parameters and prognosis, evaluating its relationship with angiogenesis, other hypoxia markers, and clarifying its role in chemotherapy and radiotherapy resistance. © 2012 John Wiley & Sons A/S.

  8. In Vivo Gene Therapy of Hemophilia B: Sustained Partial Correction in Factor IX-Deficient Dogs

    Science.gov (United States)

    Kay, Mark A.; Rothenberg, Steven; Landen, Charles N.; Bellinger, Dwight A.; Leland, Frances; Toman, Carol; Finegold, Milton; Thompson, Arthur R.; Read, M. S.; Brinkhous, Kenneth M.; Woo, Savio L. C.

    1993-10-01

    The liver represents a model organ for gene therapy. A method has been developed for hepatic gene transfer in vivo by the direct infusion of recombinant retroviral vectors into the portal vasculature, which results in the persistent expression of exogenous genes. To determine if these technologies are applicable for the treatment of hemophilia B patients, preclinical efficacy studies were done in a hemophilia B dog model. When the canine factor IX complementary DNA was transduced directly into the hepatocytes of affected dogs in vivo, the animals constitutively expressed low levels of canine factor IX for more than 5 months. Persistent expression of the clotting. factor resulted in reductions of whole blood clotting and partial thromboplastin times of the treated animals. Thus, long-term treatment of hemophilia B patients may be feasible by direct hepatic gene therapy in vivo.

  9. Operational Lessons Learned from the Ares I-X Flight Test

    Science.gov (United States)

    Davis, Stephan R.

    2010-01-01

    The Ares I-X flight test, launched in 2009, is the first test of the Ares I crew launch vehicle. This development flight test evaluated the flight dynamics, roll control, and separation events, but also provided early insights into logistical, stacking, launch, and recovery operations for Ares I. Operational lessons will be especially important for NASA as the agency makes the transition from the Space Shuttle to the Constellation Program, which is designed to be less labor-intensive. The mission team itself comprised only 700 individuals over the life of the project compared to the thousands involved in Shuttle and Apollo missions; while missions to and beyond low-Earth orbit obviously will require additional personnel, this lean approach will serve as a model for future Constellation missions. To prepare for Ares I-X, vehicle stacking and launch infrastructure had to be modified at Kennedy Space Center's Vehicle Assembly Building (VAB) as well as Launch Complex (LC) 39B. In the VAB, several platforms and other structures designed for the Shuttle s configuration had to be removed to accommodate the in-line, much taller Ares I-X. Vehicle preparation activities resulted in delays, but also in lessons learned for ground operations personnel, including hardware deliveries, cable routing, transferred work and custodial paperwork. Ares I-X also proved to be a resource challenge, as individuals and ground service equipment (GSE) supporting the mission also were required for Shuttle or Atlas V operations at LC 40/41 at Cape Canaveral Air Force Station. At LC 39B, several Shuttle-specific access arms were removed and others were added to accommodate the in-line Ares vehicle. Ground command, control, and communication (GC3) hardware was incorporated into the Mobile Launcher Platform (MLP). The lightning protection system at LC 39B was replaced by a trio of 600-foot-tall towers connected by a catenary wire to account for the much greater height of the vehicle. Like Shuttle

  10. Incidence of factor IX inhibitor development in severe haemophilia B patients treated with only one brand of high purity plasma derived factor IX concentrate.

    Science.gov (United States)

    Parquet, A; Laurian, Y; Rothschild, C; Navarro, R; Guérois, C; Gay, V; Durin, A; Peynet, J; Sultan, Y

    1999-10-01

    Fifteen previously untreated patients (Pups) with severe haemophilia B (factor IX activity brand of plasma-derived high purity factor IX concentrate (FIX LFB) were studied. Age at first injection varied from 1 to 137 months and follow-up since this first injection from 21 to 86 months (median: 35). Cumulative exposure days (CED) were from 4 to over 100 (median: 26). Among these 15 Pups only one developed an inhibitor. Mutation analysis performed in all patients showed total gene deletion in the patient with inhibitor, partial gene deletion in another one, and missense mutations in 9 families. Mutation was not found in one patient. Actually, according to the data already published, only two patients were at high risk for inhibitor development in our population. Our study, although rather small, confirms the previously reported low incidence of inhibitors in haemophilia B. Large studies on incidence of FIX inhibitors are indeed difficult to perform, due to both the overall small number of severe haemophilia B patients and the low incidence of FIX inhibitors. Consequently, the impact of bias, such as prevalence of different types of gene defects in a given population, is major. Therefore, any study, dealing with incidence of FIX inhibitors in severe haemophilia B should report, for each patient, the type of gene defect.

  11. Transition properties of the Be-like X-ray from Mg IX

    Indian Academy of Sciences (India)

    Feng Hu

    2017-11-23

    Nov 23, 2017 ... https://doi.org/10.1007/s12043-017-1489-6. Transition properties of the Be-like Kα X-ray from Mg IX. FENG HU1,3,∗. , SHUFANG ZHANG1, YAN SUN1, MAOFEI MEI1, CUICUI SANG2 and JIAMIN YANG3. 1School of Mathematical and Physical Sciences, Xuzhou Institute of Technology, Xuzhou 221111,.

  12. The sequels of the Fortunati ambo (Verg., Aen. IX 446-449: Epic and Empire.

    Directory of Open Access Journals (Sweden)

    Antonio Río Torres-Murciano

    2009-12-01

    Full Text Available In the well known apostrophe fortunati ambo (Aen. IX 446-449, Virgil ties literary durableness, which is a traditional aim of epic poetry, to the permanence of Roman empire. Nevertheless, this Virgilian analogy is put into question not only by Lucan, who overtly refutes it, but also by the epigones who, like Valerius Flaccus, Silius Italicus and Statius, look for their own way following in the great predecessor’s footsteps.

  13. Bianchi Type-IX viscous fluid cosmological model in general relativity

    Indian Academy of Sciences (India)

    the de-Sitter universe, the Taub-NUT solutions etc. are of Bianchi Type-IX space- times. In these models, neutrino viscosity does not guarantee isotropy at the present ..... The model (2.11) starts with a big-bang at T = 0 where α > 0 and m < 2, and the expansion in the model decreases as time increases. The expansion in the ...

  14. PROFIL PERTANYAAN SISWA TUNANETRA KELAS IX SMPLB YKAB SURAKARTA DALAM PEMBELAJARAN MATEMATIKA

    OpenAIRE

    Siti Khoiriyah

    2015-01-01

    Abstract Thinking can be drilled to the student by developing question skill during teaching process. Personal life quality is determined from question quality; the more qualified a question the more success a person in life. Therefore, this study analyzed the students question to find out the students question quality. The subject of this study is IX class of SMPLB YKAB students Surakarta. The data was found by observation with handy cam. The data analysis was conducted through data reductio...

  15. Combining Alphas via Bounded Regression

    Directory of Open Access Journals (Sweden)

    Zura Kakushadze

    2015-11-01

    Full Text Available We give an explicit algorithm and source code for combining alpha streams via bounded regression. In practical applications, typically, there is insufficient history to compute a sample covariance matrix (SCM for a large number of alphas. To compute alpha allocation weights, one then resorts to (weighted regression over SCM principal components. Regression often produces alpha weights with insufficient diversification and/or skewed distribution against, e.g., turnover. This can be rectified by imposing bounds on alpha weights within the regression procedure. Bounded regression can also be applied to stock and other asset portfolio construction. We discuss illustrative examples.

  16. Pain during photodynamic therapy is associated with protoporphyrin IX fluorescence and fluence rate

    DEFF Research Database (Denmark)

    Wiegell, S.R.; Skiveren, J.; Philipsen, P.A.

    2008-01-01

    two different fluence rates. Pain score during PDT and PpIX fluorescence prior to illumination were measured. Results The study showed that pain during illumination was associated with the PpIX fluorescence in the treatment area (P = 0.0003, R-2 = 0.31). When using a fluence rate of 34 mW cm(-2......) patients with acne had a pain score of 6 [interquartile range (IQR) 5-7] compared with 8 (IQR 6-10) when using a fluence rate of 68 mW cm(-2) (P = 0.018). After correcting the pain score for PpIX fluorescence no differences in pain scores were found between first and second acne treatment, locations of AK......Background Pain during photodynamic therapy (PDT) is a considerable problem that needs to be studied to improve this otherwise attractive treatment of skin diseases. Objectives To compare pain during PDT using two different fluence rates, and also to evaluate the association between pain...

  17. Aplikasi Peta Kendali p sebagai Pengendalian Kualitas Karet di PTPN IX Batujamus/Kerjoarum

    Directory of Open Access Journals (Sweden)

    Isti Khomah

    2016-03-01

    Full Text Available The increasing of global rubber consumption is an opportunity as well as a challenge for Indonesian rubber produsers to increase the quantity and the quality of production. Faced the competition between countries, the quality of rubber products should be enhanced adapted to consumer demand. This study aims to determine whether the quality of the rubber produced in PTPN IX (Persero Garden Batujamus/Kerjoarum still within the control or not. This study uses time series data, in the form of rubber production data during March 2012 - February 201, that were analyzed descriptively using Control p Chart Analysis. Control p Chart describe the proportion of production damage that can be tolerated as a tool for statistical Control p Chart Application as Quality Control Tools for Rubber Production in PTPN IX Batujamus/Kerjoarum process control. This study shows that the quality of the rubber produced by PTPN IX (Persero Garden Batujamus/ Kerjoarum is out of the control. The Control p Chart proves that there are still many points that are outside the production control line. The production domination of the third RSS type (RSS 3 cause this problem, so that the profit and the efficiency of the company can be increased if the RSS 3 product can be controlled and be changed with the production of RSS 1.

  18. YOUNG STELLAR POPULATIONS IN MYStIX STAR-FORMING REGIONS: CANDIDATE PROTOSTARS

    Energy Technology Data Exchange (ETDEWEB)

    Romine, Gregory; Feigelson, Eric D.; Getman, Konstantin V. [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States); Kuhn, Michael A. [Millennium Institute of Astrophysics, Camino El Observatorio 1515, Las Condes, Santiago (Chile); Povich, Matthew S., E-mail: edf@astro.psu.edu [Department of Physics and Astronomy, California State Polytechnic University, 3801 West Temple Ave., Pomona, CA 91768 (United States)

    2016-12-20

    The Massive Young Star-Forming Complex in Infrared and X-ray (MYStIX) project provides a new census on stellar members of massive star-forming regions within 4 kpc. Here the MYStIX Infrared Excess catalog and Chandra -based X-ray photometric catalogs are mined to obtain high-quality samples of Class I protostars using criteria designed to reduce extragalactic and Galactic field star contamination. A total of 1109 MYStIX Candidate Protostars (MCPs) are found in 14 star-forming regions. Most are selected from protoplanetary disk infrared excess emission, but 20% are found from their ultrahard X-ray spectra from heavily absorbed magnetospheric flare emission. Two-thirds of the MCP sample is newly reported here. The resulting samples are strongly spatially associated with molecular cores and filaments on Herschel far-infrared maps. This spatial agreement and other evidence indicate that the MCP sample has high reliability with relatively few “false positives” from contaminating populations. But the limited sensitivity and sparse overlap among the infrared and X-ray subsamples indicate that the sample is very incomplete with many “false negatives.” Maps, tables, and source descriptions are provided to guide further study of star formation in these regions. In particular, the nature of ultrahard X-ray protostellar candidates without known infrared counterparts needs to be elucidated.

  19. Glycogen storage disease type IX and growth hormone deficiency presenting as severe ketotic hypoglycemia.

    Science.gov (United States)

    Hodax, Juanita K; Uysal, Serife; Quintos, Jose Bernardo; Phornphutkul, Chanika

    2017-02-01

    Glycogen storage disease (GSD) type IX and growth hormone (GH) deficiency cause ketotic hypoglycemia via different mechanisms and are not known to be associated. We describe a patient presenting with severe ketotic hypoglycemia found to have both GSD IX and isolated GH deficiency. A 3-year-and-11-month-old boy with a history of prematurity, autism, developmental delay, seizures, and feeding difficulty was admitted for poor weight gain and symptomatic hypoglycemia. He was nondysmorphic, with a height of 93.8 cm (2%, -1.97 SDS), and has no hepatomegaly. He developed symptomatic hypoglycemia, with a serum glucose level of 37 mg/dL after 14 h of fasting challenge. Critical sample showed a GH of 0.24 ng/mL. GH provocative stimulation testing was done with a peak GH of 2.8 ng/mL. Brain magnetic resonance imaging showed a hypoplastic pituitary gland. Given the clinical symptoms, suspicion for mitochondrial disease was high. Dual Genome Panel by Massively Parallel Sequencing revealed a hemizygous variant c.721A>G (p1241V) in the X-linked PHKA2 gene, a causative gene for GSD IX. Red blood cell PhK enzyme activity testing was low, supporting the diagnosis. Given the patient's developmental delays that were not explained by GH deficiency alone, further investigation showed two unrelated conditions resulting in deranged metabolic adaptation to fasting leading to severe hypoglycemia.

  20. Development of sulfonamides incorporating phenylacrylamido functionalities as carbonic anhydrase isoforms I, II, IX and XII inhibitors.

    Science.gov (United States)

    Angapelly, Srinivas; Ramya, P V Sri; Angeli, Andrea; Del Prete, Sonia; Capasso, Clemente; Arifuddin, Mohammed; Supuran, Claudiu T

    2017-10-15

    A series of novel sulfonamides incorporating phenylacrylamido functionalities were synthesized and investigated for the inhibition of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1). The physiologically and pharmacologically relevant human (h) isoforms hCA I and II (cytosolic isozymes), as well as the transmembrane tumor-associated hCA IX and XII were included in the study. These compounds showed low nanomolar or sub-nanomolar inhibition constants against hCA II (K I s in the range of 0.50-50.5nM), hCA IX (K I s of 1.8-228.5nM), and hCA XII (K I s of 3.5-96.2nM) being less effective as inhibitors of the off target isoform hCA I. A detailed structure-activity relationship study demonstrates that the nature and position of substituents present on the aromatic part of the scaffold strongly influence the inhibition of CA isoforms. As hCA II, IX and XII are involved in pathologies such as glaucoma and hypoxic, and metastatic tumors, compounds of the type reported in this work may be useful preclinical candidates. Copyright © 2017 Elsevier Ltd. All rights reserved.

  1. The Malmö polymorphism of factor IX: establishing the genotypes by rapid analysis of DNA.

    Science.gov (United States)

    Graham, J B; Kunkel, G R; Tennyson, G S; Lord, S T; Fowlkes, D M

    1989-06-01

    A DNA polymorphism in the coding region of coagulation factor IX--potentially valuable for carrier detection, prenatal diagnosis, and population studies--was described in 1985. It had been discovered with monoclonal antibodies that distinguish between threonine and alanine as the 148th residue of the peptide. Its use as a diagnostic tool has been limited because threonine-containing factor IX (Malmö A) is dominant to alanine-containing factor IX (Malmö B) in immunoassays of plasma; therefore, detection of Malmö heterozygotes is not possible in all instances. A DNA method for recognizing all heterozygotes has been developed, but it also has limitations. We report the development of another DNA procedure based on amplification of the relevant DNA with the polymerase chain reaction (PCR). This method is quick, avoids the use of isotopes and x-ray film, and specifically identifies all the Malmö genotypes: hemizygotes, homozygotes, and heterozygotes. The procedure can be performed satisfactorily on small samples of blood (less than 1 mL) as suggested by Kogan et al (N Engl J Med 317:985, 1987). The method described is applicable to any genetic polymorphism that overlaps a restriction enzyme recognition site.

  2. Transmembrane carbonic anhydrase isozymes IX and XII in the female mouse reproductive organs

    Directory of Open Access Journals (Sweden)

    Tomas Eija

    2004-10-01

    Full Text Available Abstract Background Carbonic anhydrase (CA classically catalyses the reversible hydration of dissolved CO2 to form bicarbonate ions and protons. The twelve active CA isozymes are thought to regulate a variety of cellular functions including several processes in the reproductive systems. Methods The present study was designed to investigate the expression of transmembrane CAs, CA IX and XII, in the mouse uterus, ovary and placenta. The expression of CA IX and XII was examined by immunoperoxidase staining method and western blotting. CA II and XIII served as positive controls since they are known to be present in the mouse reproductive tract. Results The data of our study indicated that CA XII is expressed in the mouse endometrium. Only very faint signal was observed in the corpus luteum of the ovary and the placenta remained mainly negative. CA IX showed weak reaction in the endometrial epithelium, while it was completely absent in the ovary and placenta. Conclusion The conservation of CA XII expression in both mouse and human endometrium suggests a role for this isozyme in reproductive physiology.

  3. In vivo wide-field multispectral dosimeter for use in ALA-PpIX based photodynamic therapy of skin

    Science.gov (United States)

    LaRochelle, Ethan P. M.; Davis, Scott C.; de Souza, Ana Luiza Ribeiro; Pogue, Brian W.

    2017-02-01

    Photodynamic therapy (PDT) for Actinic Kertoses (AK) using aminoluvelinic acid (ALA) is an FDA-approved treatment, which is generally effective, yet response rates vary. The origin of the variability is not well characterized, but may be related to inter-patient variability in the production of protoporphyrin IX (PpIX). While fiber-based point probe systems provide a method for measuring PpIX production, these measurements have demonstrated large spatial and inter-operator variability. Thus, in an effort to improve patient-specific dosimetry and treatment it is important to develop a robust system that accounts for spatial variability and reduces the chance of operator errors. To address this need, a wide-field multispectral imaging system was developed that is capable of quantifying maps of PpIX in both liquid phantoms and in vivo experiments, focusing on high sensitivity light signals. The system uses both red and blue excitation to elicit a fluorescent response at varying skin depths. A ten-position filter wheel with bandpass filters ranging from 635nm to 710nm are used to capture images along the emission band. A linear least-square spectral fitting algorithm provides the ability to decouple background autofluorescence from PpIX fluorescence, which has improved the system sensitivity by an order of magnitude, detecting nanomolar PpIX concentrations in liquid phantoms in the presence of 2% whole blood and 2% intralipid.

  4. [ZnPP IX and L-NAME reduce the cGMP content in the penile tissue of rats].

    Science.gov (United States)

    Ma, Hong-Bin; Qin, Wen-bo; Gui, Shi-liang

    2009-06-01

    To investigate the effects of CO release inhibitor zinc protoporphyria IX (ZnPP IX) and NO release inhibitor L-NAME on the content of cGMP in the penile tissue of rats. Thirty Wistar rats were randomly divided into a normal control, a ZnPP IX, and an L-NAME group, given saline (1 ml/kg/d), ZnPP IX (45 micromol/kg/d) and L-NAME (50 mg/kg/d), respectively, for 7 days. Then all the rats were killed, homogenate made from their penile tissues and detected for the contents of NOS, NO, CO and cGMP. The contents of CO, NOS, NO and cGMP were all reduced in both the ZnPP IX and L-NAME groups as compared with the control group (P ZnPP IX and L-NAME can reduce the concentrations of CO and NO in the penile tissues of rats, and consequently the content of cGMP.

  5. Treatment of alpha bearing wastes

    International Nuclear Information System (INIS)

    1988-01-01

    This report deals with the current state of the art of alpha waste treatment, which is an integral part of the overall nuclear waste management system. The International Atomic Energy Agency (IAEA) defines alpha bearing waste as 'waste containing one or more alpha emitting radionuclides, usually actinides, in quantities above acceptable limits'. The limits are established by national regulatory bodies. The limits above which wastes are considered as alpha contaminated refer to the concentrations of alpha emitters that need special consideration for occupational exposures and/or potential safety, health, or environmental impact during one or more steps from generation through disposal. Owing to the widespread use of waste segregation by source - that is, based upon the 'suspect origin' of the material - significant volumes of waste are being handled as alpha contaminated which, in fact, do not require such consideration by reason of risk or environmental concern. The quantification of de minimis concepts by national regulatory bodies could largely contribute to the safe reduction of waste volumes and associated costs. Other factors which could significantly contribute to the reduction of alpha waste arisings are an increased application of assaying and sorting, instrumentation and the use of feedback mechanisms to control or modify the processes which generate these wastes. Alpha bearing wastes are generated during fabrication and reprocessing of nuclear fuels, decommissioning of alpha contaminated facilities, and other activities. Most alpha wastes are contact handled, but a small portion may require shielding or remote handling because of high levels of neutron (n), beta (β), or gamma (γ) emissions associated with the waste material. This report describes the sources and characteristics of alpha wastes and strategies for alpha waste management. General descriptions of treatment processes for solid and liquid alpha wastes are included. 71 refs, 14 figs, 9 tabs

  6. The alpha effect

    International Nuclear Information System (INIS)

    Anon.

    1982-01-01

    Much of the recent interest in RAM system reliability stems from concern over alpha particle soft error rates reported for the initial 64 k RAMs. With increasing memory density likely in the next few years the problem of soft errors is rearing its head again. A few years ago ITT carried out experiments on 16k RAMs and found no significant problems. However, recent tests have shown a raise in the number of soft errors with 64k RAMs, and the launch of 256k and 512k memories is likely to make the problem acute

  7. Alpha-mannosidosis

    Directory of Open Access Journals (Sweden)

    Nilssen Øivind

    2008-07-01

    Full Text Available Abstract Alpha-mannosidosis is an inherited lysosomal storage disorder characterized by immune deficiency, facial and skeletal abnormalities, hearing impairment, and intellectual disability. It occurs in approximately 1 of 500,000 live births. The children are often born apparently normal, and their condition worsens progressively. Some children are born with ankle equinus or develop hydrocephalus in the first year of life. Main features are immune deficiency (manifested by recurrent infections, especially in the first decade of life, skeletal abnormalities (mild-to-moderate dysostosis multiplex, scoliosis and deformation of the sternum, hearing impairment (moderate-to-severe sensorineural hearing loss, gradual impairment of mental functions and speech, and often, periods of psychosis. Associated motor function disturbances include muscular weakness, joint abnormalities and ataxia. The facial trait include large head with prominent forehead, rounded eyebrows, flattened nasal bridge, macroglossia, widely spaced teeth, and prognathism. Slight strabismus is common. The clinical variability is significant, representing a continuum in severity. The disorder is caused by lysosomal alpha-mannosidase deficiency. Alpha-mannosidosis is inherited in an autosomal recessive fashion and is caused by mutations in the MAN2B1 gene located on chromosome 19 (19 p13.2-q12. Diagnosis is made by measuring acid alpha-mannosidase activity in leukocytes or other nucleated cells and can be confirmed by genetic testing. Elevated urinary secretion of mannose-rich oligosaccharides is suggestive, but not diagnostic. Differential diagnoses are mainly the other lysosomal storage diseases like the mucopolysaccharidoses. Genetic counseling should be given to explain the nature of the disease and to detect carriers. Antenatal diagnosis is possible, based on both biochemical and genetic methods. The management should be pro-active, preventing complications and treating

  8. Alpha activity measurement with lsc

    International Nuclear Information System (INIS)

    Dobrin, R. I.; Dulama, C. N.; Ciocirlan, C. N.; Toma, A.; Stoica, S. M.; Valeca, M.

    2013-01-01

    Recently, we showed that the alpha activity in liquid samples can be measured using a liquid scintillation analyzer without alpha/beta discrimination capability. The purpose of this work was to evaluate the performances of the method and to optimize the procedure of the sample preparation. A series of tests was performed to validate the procedure of alpha emitting radionuclides extraction in aqueous samples with Actinide Resin, especially regarding to the contact time required to extract all alpha nuclides. The main conclusions were that a minimum 18 hours stirring time is needed to achieve a percent recovery of the alpha nuclides grater than 90% and that the counting efficiency of alphas measurements with LSC is nearly 100%. (authors)

  9. Use of Cre/loxP recombination to swap cell binding motifs on the adenoviral capsid protein IX

    International Nuclear Information System (INIS)

    Poulin, Kathy L.; Tong, Grace; Vorobyova, Olga; Pool, Madeline; Kothary, Rashmi; Parks, Robin J.

    2011-01-01

    We used Cre/loxP recombination to swap targeting ligands present on the adenoviral capsid protein IX (pIX). A loxP-flanked sequence encoding poly-lysine (pK-binds heparan sulfate proteoglycans) was engineered onto the 3'-terminus of pIX, and the resulting fusion protein allowed for routine virus propagation. Growth of this virus on Cre-expressing cells removed the pK coding sequence, generating virus that could only infect through alternative ligands, such as a tyrosine kinase receptor A (TrkA)-binding motif engineered into the capsid fibre protein for enhanced infection of neuronal cells. We used a similar approach to swap the pK motif on pIX for a sequence encoding a single-domain antibody directed towards CD66c for targeted infection of cancer cells; Cre-mediated removal of the pK-coding sequence simultaneously placed the single-domain antibody coding sequence in frame with pIX. Thus, we have developed a simple method to propagate virus lacking native viral tropism but containing cell-specific binding ligands. - Highlights: → We describe a method to grow virus lacking native tropism but containing novel cell-binding ligands. → Cre/loxP recombination was used to modify the adenovirus genome. → A targeting ligand present on capsid protein IX was removed or replaced using recombination. → Cre-loxP was also used to 'swap' the identity of the targeting ligand present on pIX.

  10. Oral delivery of bioencapsulated coagulation factor IX prevents inhibitor formation and fatal anaphylaxis in hemophilia B mice.

    Science.gov (United States)

    Verma, Dheeraj; Moghimi, Babak; LoDuca, Paul A; Singh, Harminder D; Hoffman, Brad E; Herzog, Roland W; Daniell, Henry

    2010-04-13

    To address complications of pathogenic antibody or life-threatening anaphylactic reactions in protein replacement therapy for patients with hemophilia or other inherited protein deficiencies, we have developed a prophylactic protocol using a murine hemophilia B model. Oral delivery of coagulation factor IX fused with cholera toxin beta-subunit (with or without a furin cleavage site; CTB-FFIX or CTB-FIX), expressed in chloroplasts (up to 3.8% soluble protein or 0.4 mg/g leaf tissue), bioencapsulated in plant cells, effectively blocked formation of inhibitory antibodies (undetectable or up to 100-fold less than controls). Moreover, this treatment eliminated fatal anaphylactic reactions that occurred after four to six exposures to intravenous F.IX. Whereas only 20-25% of control animals survived after six to eight F.IX doses, 90-93% of F.IX-fed mice survived 12 injections without signs of allergy or anaphylaxis. Immunostaining confirmed delivery of F.IX to Peyer's patches in the ileum. Within 2-5 h, feeding of CTB-FFIX additionally resulted in systemic delivery of F.IX antigen. This high-responder strain of hemophilia B mice represents a new animal model to study anaphylactic reactions. The protocol was effective over a range of oral antigen doses (equivalent to 5-80 microg recombinant F.IX/kg), and controlled inhibitor formation and anaphylaxis long-term, up to 7 months (approximately 40% life span of this mouse strain). Oral antigen administration caused a deviant immune response that suppressed formation of IgE and inhibitory antibodies. This cost-effective and efficient approach of antigen delivery to the gut should be applicable to several genetic diseases that are prone to pathogenic antibody responses during treatment.

  11. Dual-wavelength excitation to reduce background fluorescence for fluorescence spectroscopic quantitation of erythrocyte zinc protoporphyrin-IX and protoporphyrin-IX from whole blood and oral mucosa

    Science.gov (United States)

    Hennig, Georg; Vogeser, Michael; Holdt, Lesca M.; Homann, Christian; Großmann, Michael; Stepp, Herbert; Gruber, Christian; Erdogan, Ilknur; Hasmüller, Stephan; Hasbargen, Uwe; Brittenham, Gary M.

    2014-02-01

    Erythrocyte zinc protoporphyrin-IX (ZnPP) and protoporphyrin-IX (PPIX) accumulate in a variety of disorders that restrict or disrupt the biosynthesis of heme, including iron deficiency and various porphyrias. We describe a reagent-free spectroscopic method based on dual-wavelength excitation that can measure simultaneously both ZnPP and PPIX fluorescence from unwashed whole blood while virtually eliminating background fluorescence. We further aim to quantify ZnPP and PPIX non-invasively from the intact oral mucosa using dual-wavelength excitation to reduce the strong tissue background fluorescence while retaining the faint porphyrin fluorescence signal originating from erythrocytes. Fluorescence spectroscopic measurements were made on 35 diluted EDTA blood samples using a custom front-face fluorometer. The difference spectrum between fluorescence at 425 nm and 407 nm excitation effectively eliminated background autofluorescence while retaining the characteristic porphyrin peaks. These peaks were evaluated quantitatively and the results compared to a reference HPLC-kit method. A modified instrument using a single 1000 μm fiber for light delivery and detection was used to record fluorescence spectra from oral mucosa. For blood measurements, the ZnPP and PPIX fluorescence intensities from the difference spectra correlated well with the reference method (ZnPP: Spearman's rho rs = 0.943, p ZnPP/heme and PPIX/heme ratios from unwashed whole blood, simplifying clinical laboratory measurements. The difference technique reduces the background fluorescence from measurements on oral mucosa, allowing for future non-invasive quantitation of erythrocyte ZnPP and PPIX.

  12. Fluorometric quantification of protoporphyrin IX in biological skin samples from in vitro penetration/permeation studies

    Directory of Open Access Journals (Sweden)

    Fábia Cristina Rossetti

    2010-12-01

    Full Text Available A fluorometric analytical method was developed for quantification of protoporphyrin IX (PpIX in skin samples and receptor phase solution after in vitro cutaneous penetration/permeation studies. Analytical conditions used were: excitation and emission wavelengths: 400 nm and 632 nm; bandwidth: 0.5 nm; excitation and emission slits: 10/10. PpIX was recovered from two different layers of skin, the stratum corneum (SC and the epidermis plus dermis ([E+D], by vortex homogenization, probe and bath sonication, using DMSO as an extraction solvent. The detection and quantification limits were 0.002 and 0.005 μg/mL, respectively. The assay was linear from 0.005 - 0.5 μg/mL. The within-day and between-day assay precision and accuracy in DMSO and receptor phase solution were each studied at the two concentration levels 0.04 and 0.2 μg/mL, and 0.01 and 0.08 μg/mL, respectively. The coefficients of variation and deviation from the theoretical values were lower than 5%. The skin recovery of PpIX from SC and [E+D] layers using two different concentrations (0.5 and 1.0 μg/mL were all above 90.0%. The method described has potential application to in vitro penetration/permeation studies of PpIX using porcine skin as a biological membrane model.Um método analítico por espectrofluorimetria foi desenvolvido para quantificar a protoporfirina IX (Pp IX em amostras de pele e fase receptora após a realização de testes in vitro de penetração/permeação cutâneas. As condições analíticas utilizadas foram: comprimentos de onda de excitação e emissão: 400 nm e 632 nm; largura de banda: 0,5 nm; fendas de excitação e emissão: 10/10. A PpIX foi extraída de amostras de estrato córneo (EC e da epiderme sem estrato córneo + derme ([E+D] através da agitação em vórtex e sonicação por haste e banho, utilizando-se o DMSO como solvente extrator. O limite de detecção e quantificação foram, respectivamente, de 0,002 e 0,005 μg/mL. O método mostrou

  13. Molecular characterization of alpha 1- and alpha 2-adrenoceptors.

    Science.gov (United States)

    Harrison, J K; Pearson, W R; Lynch, K R

    1991-02-01

    Three 'alpha 1-adrenoceptors' and three 'alpha 2-adrenoceptors' have now been cloned. How closely do these receptors match the native receptors that have been identified pharmacologically? What are the properties of these receptors, and how do they relate to other members of the cationic amine receptor family? Kevin Lynch and his colleagues discuss these questions in this review.

  14. Comparison of Ares I-X Wind-Tunnel Derived Buffet Environment with Flight Data

    Science.gov (United States)

    Piatak, David J.; Sekula, Martin K.; Rausch, Russ D.

    2011-01-01

    The Ares I-X Flight Test Vehicle (FTV), launched in October 2009, carried with it over 243 buffet verification pressure sensors and was one of the most heavily instrumented launch vehicle flight tests. This flight test represented a unique opportunity for NASA and its partners to compare the wind-tunnel derived buffet environment with that measured during the flight of Ares I-X. It is necessary to define the launch vehicle buffet loads to ensure that structural components and vehicle subsystems possess adequate strength, stress, and fatigue margins when the vehicle structural dynamic response to buffet forcing functions are considered. Ares I-X buffet forcing functions were obtained via wind-tunnel testing of a rigid buffet model (RBM) instrumented with hundreds of unsteady pressure transducers designed to measure the buffet environment across the desired frequency range. This paper discusses the comparison of RBM and FTV buffet environments, including fluctuating pressure coefficient and normalized sectional buffet forcing function root-mean-square magnitudes, frequency content of power-spectral density functions, and force magnitudes of an alternating flow phenomena. Comparison of wind-tunnel model and flight test vehicle buffet environments show very good agreement with root-mean-square magnitudes of buffet forcing functions at the majority of vehicle stations. Spectra proved a challenge to compare because of different wind-tunnel and flight test conditions and data acquisition rates. However, meaningful and promising comparisons of buffet spectra are presented. Lastly, the buffet loads resulting from the transition of subsonic separated flow to supersonic attached flow were significantly over-predicted by wind-tunnel results.

  15. The rates and patterns of deletions in the human factor IX gene

    Energy Technology Data Exchange (ETDEWEB)

    Ketterling, R.P.; Vielhaber, E.L.; Lind, T.J.; Thorland, E.C.; Sommer S.S. (Mayo Clinic/Foundation, Rochester, MN (United States))

    1994-02-01

    Deletions are commonly observed in genes with either segments of highly homologous sequences or excessive gene length. However, in the factor IX gene and in most genes, deletions (of [ge]21 bp) are uncommon. The authors have analyzed DNA from 290 families with hemophilia B (203 independent mutations) and have found 12 deletions >20 bp. Eleven of these are >2 kb (range >3-163 kb), and one is 1.1 kb. The junctions of the four deletions that are completely contained within the factor IX gene have been determined. A novel mutation occurred in patient HB128: the data suggest that a 26.8-kb deletion occurred between two segments of alternating purines and pyrimidines and that a 2.3-kb sense strand segment derived from the deleted region was inserted. For a sample of 203 independent mutations, the authors estimate the [open quotes]baseline[close quotes] rates of deletional mutation per base pair per generation as a function of size. The rate for large (>2 kb)I deletions is exceedingly low. For every mutational event in which a given base is at the junction of a large deletion, there are an estimated 58 microdeletions (<20 bp) and 985 single-base substitutions at that base. Analysis of the nine reported deletion junctions in the factor IX gene literature reveals that (i) five are associated with inversion, orphan sequences, or sense strand insertions; (ii) four are simple deletions that display an excess of short direct repeats at their junctions; (iii) there is no dramatic clustering of junctions within the gene; and (iv) with the exception of alternating purines and pyrimidines, deletion junctions are not preferentially associated with repetitive DNA. 58 refs., 5 figs., 5 tabs.

  16. Inhibition of hepatitis C virus replication by chalepin and pseudane IX isolated from Ruta angustifolia leaves.

    Science.gov (United States)

    Wahyuni, Tutik Sri; Widyawaruyanti, Aty; Lusida, Maria Inge; Fuad, Achmad; Soetjipto; Fuchino, Hiroyuki; Kawahara, Nobuo; Hayashi, Yoshitake; Aoki, Chie; Hotta, Hak

    2014-12-01

    Hepatitis C virus (HCV) infection is highly prevalent among global populations, with an estimated number of infected patients being 170 million. Approximately 70-80% of patients acutely infected with HCV will progress to chronic liver disease, such as liver cirrhosis and hepatocellular carcinoma, which is a substantial cause of morbidity and mortality worldwide. New therapies for HCV infection have been developed, however, the therapeutic efficacies still need to be improved. Medicinal plants are promising sources for antivirals against HCV. A variety of plants have been tested and proven to be beneficial as antiviral drug candidates against HCV. In this study, we examined extracts, their subfractions and isolated compounds of Ruta angustifolia leaves for antiviral activities against HCV in cell culture. We isolated six compounds, chalepin, scopoletin, γ-fagarine, arborinine, kokusaginine and pseudane IX. Among them, chalepin and pseudane IX showed strong anti-HCV activities with 50% inhibitory concentration (IC₅₀) of 1.7 ± 0.5 and 1.4 ± 0.2 μg/ml, respectively, without apparent cytotoxicity. Their anti-HCV activities were stronger than that of ribavirin (2.8 ± 0.4 μg/ml), which has been widely used for the treatment of HCV infection. Mode-of-action analyses revealed that chalepin and pseudane IX inhibited HCV at the post-entry step and decreased the levels of HCV RNA replication and viral protein synthesis. We also observed that arborinine, kokusaginine and γ-fagarine possessed moderate levels of anti-HCV activities with IC₅₀ values being 6.4 ± 0.7, 6.4 ± 1.6 and 20.4 ± 0.4 μg/ml, respectively, whereas scopoletin did not exert significant anti-HCV activities at 30 μg/ml. Copyright © 2014 Elsevier B.V. All rights reserved.

  17. Alpha wastes treatment

    International Nuclear Information System (INIS)

    Thouvenot, P.

    2000-01-01

    Alter 2004, the alpha wastes issued from the Commissariat a l'Energie Atomique installations will be sent to the CEDRA plant. The aims of this installation are decontamination and wastes storage. Because of recent environmental regulations concerning ozone layer depletion, the use of CFC 113 in the decontamination unit, as previously planned, is impossible. Two alternatives processes are studied: the AVD process and an aqueous process including surfactants. Best formulations for both processes are defined issuing degreasing kinetics. It is observed that a good degreasing efficiency is linked to a good decontamination efficiency. Best results are obtained with the aqueous process. Furthermore, from the point of view of an existing waste treatment unit, the aqueous process turns out to be more suitable than the AVD process. (author)

  18. The Ripple Effect of Title IX on Women's Health Issues: Treating an Increasingly Active Population.

    Science.gov (United States)

    Mees, Patricia D

    2003-04-01

    Perhaps no area in sports medicine has changed as dramatically in the last 30 years as women's health. Title IX of the Education Amendments of 1972 prohibited discrimination on the basis of sex in all curricular and extracurricular activities at educational institutions that receive federal funding. Before 1972, many assumed that women were not interested in sports and that there was no need to provide programs for girls and women, and most primary care physicians had little experience in treating female athletes and other active women.

  19. The 3d84s-3d84p transitions in Br IX

    International Nuclear Information System (INIS)

    Zeng, X.T.; Jupen, C.; Livingston, A.E.; Westerlind, M.; Engstroem, L.; Martinson, I.

    1990-01-01

    The spectrum of bromine was studied in the region 450-1100 A, using the beam-foil method with 6 MeV ions from a tandem accelerator. On the basis of isoelectronic extrapolations and theoretical calculations, 32 lines were classified as transitions between the 3p 6 3d 8 4s and 3p 6 3d 8 4p configurations of Co-like BrIX. Fo the 16 possible 4s levels 13 have been located, and 11 new 4p levels have been added to the previously known ones. Only 4 of all the 4p levels (45 in total) remain to be found. (orig.)

  20. Modern history of women in sports. Twenty-five years of Title IX.

    Science.gov (United States)

    Lopiano, D A

    2000-04-01

    The impact of federal anti-discrimination laws such as Title IX and the Amateur Sports Act have opened the doors of sport participation opportunity to girls and women in sports over the last 25 years. Such participation has created new and more lucrative consumer markets for sporting goods manufactures, as well as college and professional sports teams. The prospect of economic gain has created significant social changes: Women are now being encouraged to participate in sports and embrace the resulting benefits, and the general public is showing increased support for gender equity in sports.

  1. Weighted oscillator strengths and lifetimes for the S IX and S X spectra

    International Nuclear Information System (INIS)

    Borges, F.O.; Cavalcanti, G.H.; Trigueiros, A.G.

    2003-01-01

    The weighted oscillator strengths (gf) and the lifetimes presented in this work were carried out in a multi configuration Hartree-Fock relativistic (HFR) approach. In this calculation, the electrostatic parameters were optimized by a least-squares procedure, in order to improve the adjustment to experimental energy levels. This method produces gf-values that are in better agreement with intensity observations and lifetime values that are closer to the experimental ones. In this work, we presented all the experimentally known electric dipole S IX and S X spectral lines

  2. IX Simposio Ibérico sobre Nutrición Mineral de las Plantas

    OpenAIRE

    Abadía Bayona, Javier

    2003-01-01

    Del 10 al 13 de Septiembre de 2002 se celebró el IX Simposio Ibérico sobre Nutrición Mineral de las Plantas en el Campus de Aula Dei de Zaragoza. El Simposio se realizó bajo los auspicios de la Sociedad Española de Fisiología Vegetal, el Consejo Superior de Investigaciones Científicas (CSIC), el Instituto Agronómico Mediterráneo de Zaragoza-Centro Internacional de Altos Estudios Agronómicos Mediterráneos (CIHEAM-IAMZ), la Asociación Internacional para la Optimización de...

  3. Collateral patient doses in the Varian 21iX radiotherapy Linac

    International Nuclear Information System (INIS)

    Barquero, R.; Castillo, A. del

    2008-01-01

    Full text: The radiotherapy aim is to irradiate the patient tumor cells while the doses in healthy tissue remains as low as possible. Nevertheless, when high photon energy accelerators are used, collateral undesired photon and neutron doses are always implied during the treatments and became more important with the new accelerators and techniques as IMRT. To assess secondary cancer risk outside the treatment volume as a long-term medical consequence of treatments, the total doses received by each patient outside the primary field during his treatment must be estimated. To achieve this purpose photon and neutron dose equivalents Hp(10) and H*(10) has been measured in a new Varian 21iX with maximum photon energy of 15 MV placed recently in our radiotherapy department. Three devices: 1) a neutron dose rate meter BERTHOLD LB 4111 calibrated recently in the German PTB laboratory, 2) a calibrated environmental pressurized photon ionization chamber (IC) VICTOREEN 450-PI n/s 1020, and 3) a calibrated personal electronic photon dosimeter GAMMACOM 4200M, were placed above the treatment couch outside the primary field while the Varian 21iX reference test were done. In particular the photon and neutron doses in the couch were measured while a water phantom was irradiated during automatic beam data acquisition for a 15 MV beam. A complete set of measurements changing field size are made. These 15 MV results are compared with data measured previously by thermoluminescence and bubble dosimeters in the same facility for an Elekta Precise and a Siemens KDS both with maximum photon energy of 18 MV. From this the benefits in the patient collateral doses of decreasing the maximum treatment photon energy are discussed. The patient doses obtained in the Varian 21iX had values that go from 80 to 800 uSv per treatment Gray. As the Varian 21iX therapy Linac is operated in pulsed mode with short pulse length the discussion of the results includes: 1. The correction of dead time in the GM

  4. Chalkony a jejich analogy jako potenciální léčiva IX

    OpenAIRE

    Kopcová, Petra

    2009-01-01

    7.2 Příloha 2 Abstract of the diploma thesis CHALCONES AND THEIR ANALOGUES AS POTENTIAL DRUGS IX. Petra Kopcová Department of Pharmaceutical Chemistry and Drug Control, Charles University in Prague, Faculty of Pharmacy in Hradec Králové, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic In the theoretical part of this diploma thesis, the beneficial effects of chalcones on cardiovascular diseases are summarized. Possible mechanisms of action of synthetic and naturally occurring compounds...

  5. Transition properties of the Be-like Kα X-ray from Mg IX

    Science.gov (United States)

    Hu, Feng; Zhang, Shufang; Sun, Yan; Mei, Maofei; Sang, Cuicui; Yang, Jiamin

    2017-12-01

    Energy levels among the lowest 40 fine-structure levels in Be-like Mg IX are calculated using grasp2K code. The wavelengths, oscillator strengths, radiative rates and lifetimes for all possible Kα transitions have been calculated using the multiconfiguration Dirac-Fock method. The accuracy of the results is determined through extensive comparisons with the existing laboratory measurements and theoretical results. The present data can be used reliably for many purposes, such as the line identification of the observed spectra, and modelling and diagnostics of magnesium plasma.

  6. Mind Your p's and Alphas.

    Science.gov (United States)

    Stallings, William M.

    In the educational research literature alpha, the a priori level of significance, and p, the a posteriori probability of obtaining a test statistic of at least a certain value when the null hypothesis is true, are often confused. Explanations for this confusion are offered. Paradoxically, alpha retains a prominent place in textbook discussions of…

  7. Summary of Alpha Particle Transport

    Energy Technology Data Exchange (ETDEWEB)

    Medley, S.S.; White, R.B.; Zweben, S.J.

    1998-08-19

    This paper summarizes the talks on alpha particle transport which were presented at the 5th International Atomic Energy Agency's Technical Committee Meeting on "Alpha Particles in Fusion Research" held at the Joint European Torus, England in September 1997.

  8. Proteinaceous alpha-araylase inhibitors

    DEFF Research Database (Denmark)

    Svensson, Birte; Fukuda, Kenji; Nielsen, P.K.

    2004-01-01

    Proteins that inhibit alpha-amylases have been isolated from plants and microorganisms. These inhibitors can have natural roles in the control of endogenous a-amylase activity or in defence against pathogens and pests; certain inhibitors are reported to be antinutritional factors. The alpha-amylase...... inhibitors belong to seven different protein structural families, most of which also contain evolutionary related proteins without inhibitory activity. Two families include bifunctional inhibitors acting both on alpha-amylases and proteases. High-resolution structures are available of target alpha-amylases...... in complex with inhibitors from five families. These structures indicate major diversity but also some similarity in the structural basis of alpha-amylase inhibition. Mutational analysis of the mechanism of inhibition was performed in a few cases and various protein engineering and biotechnological...

  9. Factor IX[sub Madrid 2]: A deletion/insertion in Facotr IX gene which abolishes the sequence of the donor junction at the exon IV-intron d splice site

    Energy Technology Data Exchange (ETDEWEB)

    Solera, J. (Unidades de Genetica Molecular, Madrid (Spain)); Magallon, M.; Martin-Villar, J. (Hemofilia Hospital, Madrid (Spain)); Coloma, A. (Departamento deBioquimica de la Facultad de Medicina de la Universidad Autonoma, Madrid (Spain))

    1992-02-01

    DNA from a patient with severe hemophilia B was evaluated by RFLP analysis, producing results which suggested the existence of a partial deletion within the factor IX gene. The deletion was further localized and characterized by PCR amplification and sequencing. The altered allele has a 4,442-bp deletion which removes both the donor splice site located at the 5[prime] end of intron d and the two last coding nucleotides located at the 3[prime] end of exon IV in the normal factor IX gene; this fragment has been inserted in inverted orientation. Two homologous sequences have been discovered at the ends of the deleted DNA fragment.

  10. New amide derivatives of Probenecid as selective inhibitors of carbonic anhydrase IX and XII: biological evaluation and molecular modelling studies.

    Science.gov (United States)

    Carradori, Simone; Mollica, Adriano; Ceruso, Mariangela; D'Ascenzio, Melissa; De Monte, Celeste; Chimenti, Paola; Sabia, Rocchina; Akdemir, Atilla; Supuran, Claudiu T

    2015-07-01

    Novel amide derivatives of Probenecid were synthesized and discovered to act as potent and selective inhibitors of the human carbonic anhydrase (hCA, EC 4.2.1.1) transmembrane isoforms hCA IX and XII. The proposed chemical transformation of the carboxylic acid into an amide group led to a complete loss of hCA I and II inhibition (Kis >10,000nM) and enhanced the inhibitory activity against hCA IX and XII, with respect to the parent compound (incorporating a COOH function). These promising biological results have been corroborated by molecular modelling studies within the active sites of the four studied human carbonic anhydrases, which enabled us to rationalize both the isoform selectivity and high activity against the tumor-associated isoforms hCA IX/XII. Copyright © 2015 Elsevier Ltd. All rights reserved.

  11. Tissue factor-dependent activation of tritium-labeled factor IX and factor X in human plasma

    International Nuclear Information System (INIS)

    Morrison, S.A.; Jesty, J.

    1984-01-01

    A comparism was made of the tissue factor-dependent activation of tritium-labeled factor IX and factor X in a human plasma system and a study was made of the role of proteases known to stimulate factor VII activity. Plasma was defibrinated by heating and depleted of its factors IX and X by passing it through antibody columns. Addition of human brain thromboplastin, Ca2+, and purified 3H-labeled factor X to the plasma resulted, after a short lag, in burst-like activation of the factor X, measured as the release of radiolabeled activation peptide. The progress of activation was slowed by both heparin and a specific inhibitor of factor Xa but factor X activation could not be completely abolished by such inhibitors. In the case of 3H-factor IX activation, the rate also increased for approximately 3 min after addition of thromboplastin, but was not subsequently curtailed. A survey of proteases implicated as activators of factor VII in other settings showed that both factor Xa and factor IXa could accelerate the activation of factor IX. However, factor Xa was unique in obliterating activation when present at concentrations greater than approximately 1 nM. Heparin inhibited the tissue factor-dependent activation of factor IX almost completely, apparently through the effect of antithrombin on the feedback reactions of factors Xa and IXa on factor VII. These results suggest that a very tight, biphasic control of factor VII activity exists in human plasma, which is modulated mainly by factor Xa. At saturation of factor VIIa/tissue factor, factor IX activation was significantly more rapid than was previously found in bovine plasma under similar conditions. The activation of factor X at saturation was slightly more rapid than in bovine plasma, despite the presence of heparin

  12. Antigen capsid-display on human adenovirus 35 via pIX fusion is a potent vaccine platform.

    Directory of Open Access Journals (Sweden)

    Nadine C Salisch

    Full Text Available Durable protection against complex pathogens is likely to require immunity that comprises both humoral and cellular responses. While heterologous prime-boost regimens based on recombinant, replication-incompetent Adenoviral vectors (AdV and adjuvanted protein have been able to induce high levels of concomitant humoral and cellular responses, complex manufacturing and handling in the field may limit their success. To combine the benefits of genetic and protein-based vaccination within one vaccine construct and to facilitate their use, we generated Human Adenovirus 35 (HAdV35 vectors genetically encoding a model antigen based on the Plasmodium falciparum (P. falciparum circumsporozoite (CS protein and displaying a truncated version of the same antigen (CSshort via protein IX on the capsid, with or without a flexible glycine-linker and/or a 45Å-spacer. The four tested pIX-antigen display variants were efficiently incorporated and presented on the HAdV35 capsid irrespective of whether a transgene was encoded or not. Transgene-expression and producibility of the display-/expression vectors were not impeded by the pIX-display. In mice, the pIX-modified vectors induced strong humoral antigen-specific immunity that increased with the inclusion of the linker-/spacer molecules, exceeded the responses induced by the genetic, transgene-expressing HAdV35 vector, and surpassed recombinant protein in potency. In addition, the pIX- display/expression vectors elicited high antigen-specific cellular immune responses that matched those of the genetic HAdV35 vector expressing CS. pIX-modified display-/expression HAdV vectors may therefore be a valuable technology for the development of vaccines against complex pathogens, especially in resource-limited settings.

  13. Ares I-X Range Safety Simulation and Analysis IV and V

    Science.gov (United States)

    Merry, Carl M.; Brewer, Joan D.; Dulski, Matt B.; Gimenez, Adrian; Barron, Kyle; Tarpley, Ashley F.; Craig, A. Scott; Beaty, Jim R.; Starr, Brett R.

    2011-01-01

    NASA s Ares I-X vehicle launched on a suborbital test flight from the Eastern Range in Florida on October 28, 2009. NASA generated a Range Safety (RS) product data package to meet the RS trajectory data requirements defined in the Air Force Space Command Manual (AFSPCMAN) 91-710. Some products included were a nominal ascent trajectory, ascent flight envelopes, and malfunction turn data. These products are used by the Air Force s 45th Space Wing (45SW) to ensure public safety and to make flight termination decisions on launch day. Due to the criticality of the RS data, an independent validation and verification (IV&V) effort was undertaken to accompany the data generation analyses to ensure utmost data quality and correct adherence to requirements. As a result of the IV&V efforts, the RS product package was delivered with confidence that two independent organizations using separate simulation software generated data to meet the range requirements and yielded similar results. This document captures the Ares I-X RS product IV&V analysis, including the methodology used to verify inputs, simulation, and output data for certain RS products. Additionally a discussion of lessons learned is presented to capture advantages and disadvantages to the IV&V processes used.

  14. Ares I-X Range Safety Simulation Verification and Analysis Independent Validation and Verification

    Science.gov (United States)

    Merry, Carl M.; Tarpley, Ashley F.; Craig, A. Scott; Tartabini, Paul V.; Brewer, Joan D.; Davis, Jerel G.; Dulski, Matthew B.; Gimenez, Adrian; Barron, M. Kyle

    2011-01-01

    NASA s Ares I-X vehicle launched on a suborbital test flight from the Eastern Range in Florida on October 28, 2009. To obtain approval for launch, a range safety final flight data package was generated to meet the data requirements defined in the Air Force Space Command Manual 91-710 Volume 2. The delivery included products such as a nominal trajectory, trajectory envelopes, stage disposal data and footprints, and a malfunction turn analysis. The Air Force s 45th Space Wing uses these products to ensure public and launch area safety. Due to the criticality of these data, an independent validation and verification effort was undertaken to ensure data quality and adherence to requirements. As a result, the product package was delivered with the confidence that independent organizations using separate simulation software generated data to meet the range requirements and yielded consistent results. This document captures Ares I-X final flight data package verification and validation analysis, including the methodology used to validate and verify simulation inputs, execution, and results and presents lessons learned during the process

  15. Computational study of the solvation of protoporphyrin IX and its Fe2+ complex

    Science.gov (United States)

    Guizado, Teobaldo Cuya; Pita, Samuel Da Rocha; Louro, Sonia R. Wanderley; Pascutti, Pedro Geraldo

    Molecular dynamics (MD) simulations of a well known hydrophobic structure, the heme (ferroprotoporphyrin IX) and its precursor in the heme synthesis, protoporphyrin IX (PPIX) are presented. The objective of the present study is to determine the stability of both structures in an aqueous medium, as well as the structure-solvent relation, hydration shells, and discuss their implications for biological processes. The density functional theory (DFT) is used for the electronic and structural characterization of both PPIX and its Fe2+ complex. A classical approach based on the Gromacs package is used for the MD. The radial distribution function g(r) is used to examine the allocation of water molecules around different regions of the porphyrins. The calculations demonstrate the heterogeneous character of the porphyrins with respect to the affinity with water molecules, the general hydrophobic character of the porphyrin ring bonded or not to the ion Fe, the hydrophilic character of the carboxylic oxygen that is unchanged upon iron binding, and the low hydrophilicity of Fe2+ in the heme.

  16. Metallocene-based inhibitors of cancer-associated carbonic anhydrase enzymes IX and XII.

    Science.gov (United States)

    Salmon, Adam J; Williams, Michael L; Wu, Quoc K; Morizzi, Julia; Gregg, Daniel; Charman, Susan A; Vullo, Daniela; Supuran, Claudiu T; Poulsen, Sally-Ann

    2012-06-14

    In this study, 20 metallocene-based compounds comprising extensive structural diversity were synthesized and evaluated as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors. These compounds proved moderate to good CA inhibitors in vitro, with several compounds displaying selectivity for cancer-associated isozymes CA IX and CA XII compared to off-target CA I and CA II. Compound 6 was the most potent ferrocene-based inhibitor with K(i)s of 5.9 and 6.8 nM at CA IX and XII, respectively. A selection of key drug-like parameters comprising Log P, Log D, solubility, and in vitro metabolic stability and permeability were measured for two of the ferrocene-based compounds, regioisomers 1 and 5. Compounds 1 and 5 were found to have characteristics consistent with lipophilic compounds, however, our findings show that the lipophilicity of the ferrocene moiety is not well modeled by replacement with either a naphthyl or a phenyl moiety in software prediction tools.

  17. Generic absence of strong singularities in loop quantum Bianchi-IX spacetimes

    Science.gov (United States)

    Saini, Sahil; Singh, Parampreet

    2018-03-01

    We study the generic resolution of strong singularities in loop quantized effective Bianchi-IX spacetime in two different quantizations—the connection operator based ‘A’ quantization and the extrinsic curvature based ‘K’ quantization. We show that in the effective spacetime description with arbitrary matter content, it is necessary to include inverse triad corrections to resolve all the strong singularities in the ‘A’ quantization. Whereas in the ‘K’ quantization these results can be obtained without including inverse triad corrections. Under these conditions, the energy density, expansion and shear scalars for both of the quantization prescriptions are bounded. Notably, both the quantizations can result in potentially curvature divergent events if matter content allows divergences in the partial derivatives of the energy density with respect to the triad variables at a finite energy density. Such events are found to be weak curvature singularities beyond which geodesics can be extended in the effective spacetime. Our results show that all potential strong curvature singularities of the classical theory are forbidden in Bianchi-IX spacetime in loop quantum cosmology and geodesic evolution never breaks down for such events.

  18. Novel mutations in PHKA2 gene in glycogen storage disease type IX patients from Hong Kong, China.

    Science.gov (United States)

    Lau, Chi-Kong; Hui, Joannie; Fong, Fion N Y; To, Ka-Fai; Fok, Tai-Fai; Tang, Nelson L S; Tsui, Stephen K W

    2011-02-01

    The diagnosis of glycogen storage disease (GSD) type IX is often complicated by the complexity of the phosphorylase kinase enzyme (PHK), and molecular analysis is the preferred way to provide definitive diagnosis. Here we reported two novel mutations found in two GSD type IX patients with different residual enzyme activities from Hong Kong, China using genetic analysis and, provided the molecular interpretation of the deficient PHK activity. These two newly described mutations would be useful for the study of future GSD patients. Copyright © 2010 Elsevier Inc. All rights reserved.

  19. Genes VI, VII, and IX of phage M13 code for minor capsid proteins of the virion.

    OpenAIRE

    Simons, G F; Konings, R N; Schoenmakers, J G

    1981-01-01

    The minor capsid proteins C and D from phage M13 have been characterized by differential amino acid labeling and amino-terminal sequence analysis. We demonstrate that D protein (Mr 12,260) is the product of gene VI, whereas the C component is composed of the products of both gene VII (Mr 3580) and gene IX (Mr 3650). Our data further show that the proteins of genes VI, VII, and IX are not subject to proteolytic processing but are packaged into mature virions as their primary translational prod...

  20. ALPHA freezes antiprotons

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    Laboratories like CERN can routinely produce many different types of antiparticles. In 1995, the PS210 experiment formed the first antihydrogen atoms and a few years later, in 2002, ATRAP and ATHENA were already able to produce several thousand of them. However, no experiment in the world has succeeded in ‘trapping’ these anti-atoms in order to study them. This is the goal of the ALPHA experiment, which has recently managed to cool down the antiprotons to just a few Kelvin. This represents a major step towards trapping the anti-atom, thus opening a new avenue into the investigation of antimatter properties.   Members of the ALPHA collaboration working on the apparatus in the Antiproton Decelerator experimental hall at CERN. Just like the atom, the anti-atom is neutral. Unlike the atom, the anti-atom is made up of antiprotons (as opposed to protons in the atom) and positrons (as opposed to electrons). In order to thoroughly study the properties of the anti-atoms, scien...

  1. Alpha-1-antitrypsin deficiency.

    Science.gov (United States)

    Bals, Robert

    2010-10-01

    Alpha-1-antitrypsin deficiency (AATD) is a rare genetic disorder associated with the development of liver and lung disease. AAT is a 52-kD glycoprotein, produced mainly by hepatocytes and secreted into the blood. Agglomeration of the AAT-protein in hepatocytes can result in liver disease. Exposure to smoke is the major risk factor for the development of lung disease characterised as early chronic obstructive lung disease (COPD). Diagnosis is based on the analysis of the AAT genotype and phenotype. The measurement of the AAT serum level is useful as screening test. Liver biopsy is not necessary to establish the diagnosis. Therapy for AAT-related liver disease is supportive, a specific therapy is not available. AATD is a rare condition (1:5000-10000) and, as a consequence, data and information on diagnosis and treatment are not easily accessible. This chapter provides a comprehensive overview on AATD, covering basic biology, diagnostic and therapeutic approaches. Copyright © 2010 Elsevier Ltd. All rights reserved.

  2. Measurement of $\\alpha_{s}$ with Radiative Hadronic Events

    CERN Document Server

    Abbiendi, G; Åkesson, P F; Alexander, G; Anagnostou, G; Anderson, K J; Asai, S; Axen, D; Bailey, I; Barberio, E; Barillari, T; Barlow, R J; Batley, R J; Bechtle, P; Behnke, T; Bell, K W; Bell, P J; Bella, G; Bellerive, A; Benelli, G; Bethke, S; Biebel, O; Boeriu, O; Bock, P; Boutemeur, M; Braibant, S; Brown, R M; Burckhart, H J; Campana, S; Capiluppi, P; Carnegie, R K; Carter, A A; Carter, J R; Chang, C Y; Charlton, D G; Ciocca, C; Csilling, A; Cuffiani, M; Dado, S; Dallavalle, M; de Roeck, A; De Wolf, E A; Desch, K; Dienes, B; Dubbert, J; Duchovni, E; Duckeck, G; Duerdoth, I P; Etzion, E; Fabbri, F; Ferrari, P; Fiedler, F; Fleck, I; Ford, M; Frey, A; Gagnon, P; Gary, J W; Geich-Gimbel, C; Giacomelli, G; Giacomelli, P; Giunta, M; Goldberg, J; Gross, E; Grunhaus, J; Gruwé, M; Sen-Gupta, A; Hajdu, C; Hamann, M; Hanson, G G; Harel, A; Hauschild, M; Hawkes, C M; Hawkings, R; Herten, G; Heuer, R D; Hill, J C; Horváth, D; Igo-Kemenes, P; Ishii, K; Jeremie, H; Jovanovic, P; Junk, T R; Kanzaki, J; Karlen, D; Kawagoe, K; Kawamoto, T; Keeler, R K; Kellogg, R G; Kennedy, B W; Kluth, S; Kobayashi, T; Kobel, M; Komamiya, S; Kramer, T; Krasznahorkays, A Jr; Krieger, P; Von Krogh, J; Kühl, T; Kupper, M; Lafferty, G D; Landsman, H; Lanske, D; Lellouch, D; Letts, J; Levinson, L; Lillich, J; Lloyd, S L; Loebinger, F K; Lü, J; Ludwig, A; Ludwig, J; Mader, W; Marcellini, S; Martin, A J; Mashimo, T; Mättig, P; McKenna, J; McPherson, R A; Meijers, F; Menges, W; Merritt, F S; Mes, H; Meyer, N; Michelini, A; Mihara, S; Mikenberg, G; Miller, D J; Mohr, W; Mori, T; Mutter, A; Nagai, K; Nakamura, I; Nanjo, H; Neal, H A; O'Neale, S W; Oh, A; Oreglia, M J; Orito, S; Pahl, C; Pásztor, G; Pater, J R; Pilcher, J E; Pinfold, J L; Plane, D E; Pooth, O; Przybycien, M; Quadt, A; Rabbertz, K; Rembser, C; Renkel, P; Roney, J M; Rossi, A M; Rozen, Y; Runge, K; Sachs, K; Saeki, T; Sarkisyan-Grinbaum, E; Schaile, A D; Schaile, O; Scharff-Hansen, P; Schiecks, J; Schörner-Sadenius, T; Schröder, M; Schumacher, M; Seuster, R; Shears, T G; Shen, B C; Sherwood, P; Skuja, A; Smith, A M; Sobie, R J; Söldner-Rembold, S; Spanó, F; Stahl, A; Strom, D; Ströhmer, R; Tarem, S; Tasevsky, M; Teuscher, R; Thomson, M A; Torrence, E; Toya, D; Trigger, I; Trócsányi, Z L; Tsur, E; Turner-Watson, M F; Ueda, I; Ujvári, B; Vollmer, C F; Vannerem, P; Vertesi, R; Verzocchi, M; Voss, H; Vossebeld, J; Ward, C P; Ward, D R; Watkins, P M; Watson, A T; Watson, N K; Wells, P S; Wengler, T; Wermes, N; Wilson, G W; Wilson, J A; Wolf, G; Wyatt, T R; Yamashita, S; Zer-Zion, D; Zivkovic, L

    2008-01-01

    Hadronic final states with a hard isolated photon are studied using data taken at centre-of-mass energies around the mass of the Z0 boson with the OPAL detector at LEP. The strong coupling alpha S is extracted by comparing data and QCD predictions for event shape observables at average reduced centre-of-mass energies ranging from 24 GeV to 78 GeV, and the energy dependence of alpha S is studied. Our results are consistent with the running of alpha S as predicted by QCD and show that within the uncertainties of our analysis event shapes in hadronic Z0 decays with hard and isolated photon radiation can be described by QCD at reduced centre-of-mass energies. Combining all values from different event shape observables and energies gives alpha S (Mz)=0.1182 pm 0.0015(stat.) pm 0.0101(syst.).

  3. What Powers Lyman alpha Blobs?

    OpenAIRE

    Ao, Y.; Matsuda, Y.; Beelen, A.; Henkel, C.; Cen, R.; De Breuck, C.; Francis, P.; Kovacs, A.; Lagache, G.; Lehnert, M.; Mao, M.; Menten, K. M.; Norris, R.; Omont, A.; Tatemastu, K.

    2015-01-01

    Lyman alpha blobs (LABs) are spatially extended lyman alpha nebulae seen at high redshift. The origin of Lyman alpha emission in the LABs is still unclear and under debate. To study their heating mechanism(s), we present Australia Telescope Compact Array (ATCA) observations of the 20 cm radio emission and Herschel PACS and SPIRE measurements of the far-infrared (FIR) emission towards the four LABs in the protocluster J2143-4423 at z=2.38. Among the four LABs, B6 and B7 are detected in the rad...

  4. Alpha heating in toroidal devices

    Energy Technology Data Exchange (ETDEWEB)

    Miley, G.H.

    1978-01-01

    Ignition (or near-ignition) by alpha heating is a key objective for the achievement of economic fusion reactors. While good confinement of high-energy alphas appears possible in larger reactors, near-term tokamak-type ignition experiments as well as some concepts for small reactors (e.g., the Field-Reversed Mirror or FRM) potentially face marginal situations. Consequently, there is a strong motivation to develop methods to evaluate alpha losses and heating profiles in some detail. Such studies for a TFTR-size tokamak and for a small FRM are described here.

  5. Efficacy of a high-purity factor IX concentrate in hemophilia B patients undergoing surgery Eficácia do concentrado de alta pureza do fator IX em pacientes cirúrgicos portadores de hemofilia B

    Directory of Open Access Journals (Sweden)

    Vesa Rasi

    2002-04-01

    Full Text Available A plasma derived, high purity, solvent-detergent treated and subsequently nanofiltered factor IX concentrate (BEMOFIL was evaluated in 19 hemophilia B patients, including four with severe, thirteen with mild or moderate type of disease and two hemophilia B carriers undergoing 31 surgical procedures. The mean in vivo recovery was 52 %, range 36 - 76 %. The mean preoperative plasma factor IX activity after the initial loading dose was 0.86 IU mL-1, range 0.59 - 1.32 IU mL-1. In eight major orthopedic procedures, the mean usage of factor IX was 44600 IU or 574 IU kg-1 during the hospital stay, mean 11.6 days. Thromboprophylaxis was not used. The hemostatic efficacy was evaluated good in all cases and there were no thromboembolic complications. In conclusion, BEMOFIL used as bolus dosing was found to be safe and effective in achieving hemostasis in subjects with hereditary F IX deficiency undergoing surgery.O concentrado de fator IX ( Bemofil , um derivado plasmático de alta pureza tratado com solventes- detergente e nano-filtrado , foi avaliado em 19 pacientes portadores de Hemofilia B .Quatro pacientes apresentavam a forma grave da moléstia, 13 a forma leve e moderada e dois portadores em um total de 31 atos cirúrgicos.A recuperação média "in vivo" foi de 52% (36-76%. A atividade plasmática média pré-operatória do fator IX após a dose inicial foi de 0,86 UI ml -1 , média de 0,59 - 1,32 UI ml-1. Em oito procedimentos ortopédicos extensos , a média de utilização do fator IX foi de 44.600 UI ou 574 UI kg -1 durante a hospitalização que teve a média de 11,6 dias. A tromboprofilaxia não foi utilizada. A eficácia hemostática avaliada em todos os casos foi boa ,e não ocorreu nenhum tipo de complicação tromboembólica. Concluímos que o Bemofil em bolus foi considerado seguro e eficaz para a hemostasia em pacientes portadores de hemofilia B que necessitam de um procedimento cirúrgico.

  6. "Prompt and Equitable" Explained: How to Craft a Title IX Compliant Sexual Harassment Policy and Why It Matters

    Science.gov (United States)

    Block, Jason A.

    2012-01-01

    An April 2011 "Dear Colleague" letter issued by the U.S. Department of Education's Office for Civil Rights provided new guidance related to Title IX and the civil rights violation inherent in sexual harassment cases. Using the "Dear Colleague" letter as a guide, this article will provide best practice suggestions to remedy…

  7. Egg-Citing! Isolation of Protoporphyrin IX from Brown Eggshells and Its Detection by Optical Spectroscopy and Chemiluminescence

    Science.gov (United States)

    Dean, Michelle L.; Miller, Tyson A.; Bruckner, Christian

    2011-01-01

    A simple and cost-effective laboratory experiment is described that extracts protoporphyrin IX from brown eggshells. The porphyrin is characterized by UV-vis and fluorescence spectroscopy. A chemiluminescence reaction (peroxyoxalate ester fragmentation) is performed that emits light in the UV region. When the porphyrin extract is added as a fluor…

  8. Boys, Girls, or Unisex? An Analysis of the Title Ix Arguments in "G.G. v. Gloucester County School Board"

    Science.gov (United States)

    Mayers, R. Stewart

    2017-01-01

    This article analyzes the arguments presented in recent federal court appeals concerning the rights of transgender students in America's public schools. Specifically, the applicability of Title IX and the Equal Protection Clause of the US Constitution to the rights of transgender students is examined.

  9. Beyond the Classroom: Using Title IX to Measure the Return to High School Sports. NBER Working Paper No. 15728

    Science.gov (United States)

    Stevenson, Betsey

    2010-01-01

    Between 1972 and 1978 U.S. high schools rapidly increased their female athletic participation rates--to approximately the same level as their male athletic participation rates--in order to comply with Title IX, a policy change that provides a unique quasi-experiment in female athletic participation. This paper examines the causal implications of…

  10. Light absorption, electron paramagnetic resonance and resonance Raman characteristics of nitridochromium(V) protoporphyrin-IX and its reconstituted hemoproteins.

    Science.gov (United States)

    Hori, H; Tsubaki, M; Yu, N T; Yonetani, T

    1991-04-29

    A surprisingly stable complex of the photolyzed product of azidochromium(III)protoporphyrin-IX was prepared and examined by light absorption, electron paramagnetic resonance (EPR) and resonance Raman spectroscopies. The characteristic EPR spectrum for this complex was consistent with a nitridochromium(V)-porphyrin complex which was two oxidation equivalents above the resting Cr(III) complex. The Cr(V)-N stretching mode was observed at 1010 cm-1 by resonance Raman spectroscopy. A simple diatomic harmonic oscillation model gave a force constant of 6.7 mdyn/A for the Cr(V)-N bond, in the region characteristic for the metal-nitrogen triple bond. Nitridochromium(V) protoporphyrin-IX reconstituted myoglobin and cytochrome c peroxidase were prepared for the first time. The nitridochromium(V)-porphyrins in these apo-proteins were unstable in contrast with the protein-free chromium(V)porphyrin. Upon irradiation of the azide complexes of the chromium(III) protoporphyrin-IX reconstituted myoglobin and cytochrome c peroxidase with ultraviolet light aerobically at room temperature, the characteristic optical and EPR spectra for nitridochromium(V) derivatives were observed. The optical spectra of these photo-induced products were different from those of the nitridochromium(V) protoporphyrin-IX reconstituted hemoproteins. The electrochemical structures of the unusual metalloporphyrin seemed to be modulated by the heme surrounding amino acid residues.

  11. Exact Bianchi type-II, VIII and IX perfect fluid cosmological models in Saez-Ballester theory of gravitation

    Science.gov (United States)

    Rao, V. U. M.; Vijaya Santhi, M.; Vinutha, T.

    2008-09-01

    Exact Bianchi type-II, VIII and IX cosmological models are obtained in a scalar tensor theory proposed by Saez and Ballester (Phys. Lett. A 113:467, 1986) with perfect fluid as a source. Some physical and geometrical properties of the models are studied. It is observed that the models are free from initial singularities and they are expanding with time.

  12. Role of aryl hydrocarbon receptor in modulation of the expression of the hypoxia marker carbonic anhydrase IX

    Czech Academy of Sciences Publication Activity Database

    Takáčová, M.; Holotňáková, T.; Vondráček, Jan; Machala, M.; Pěnčíková, K.; Gradin, K.; Poellinger, L.; Pastorek, J.; Pastoreková, S.; Kopáček, J.

    2009-01-01

    Roč. 419, - (2009), s. 419-425 ISSN 0264-6021 Institutional research plan: CEZ:AV0Z50040507; CEZ:AV0Z50040702 Keywords : AhR * carbonic anhydrase IX * dioxin Subject RIV: BO - Biophysics Impact factor: 5.155, year: 2009

  13. Expression and activity of carbonic anhydrase IX is associated with metabolic dysfunction in MDA-MB-231 breast cancer cells.

    NARCIS (Netherlands)

    Li, Y.; Wang, H.; Oosterwijk, E.; Tu, C.; Shiverick, K.T.; Silverman, D.N.; Frost, S.C.

    2009-01-01

    The expression of carbonic anhydrase IX (CAIX), a marker for hypoxic tumors, is correlated with poor prognosis in breast cancer patients. We show herein that the MDA-MB-231 cells, a "triple-negative," basal B line, express exclusively CAIX, while a luminal cell line (T47D) expresses carbonic

  14. Good Sports? Historical Perspective on the Political Economy of Intercollegiate Athletics in the Era of Title IX, 1972-1997.

    Science.gov (United States)

    Thelin, John R.

    2000-01-01

    Review of historical data does not support claims of colleges and universities that compliance with Title IX (1972) has led to financial strains in operation of intercollegiate athletic programs or that self-regulation makes federal guidelines an unreasonable and unnecessary intrusion into institutional autonomy. Focuses on the Brown vs. Cohen…

  15. PHKA2 mutation spectrum in Korean patients with glycogen storage disease type IX: prevalence of deletion mutations.

    Science.gov (United States)

    Choi, Rihwa; Park, Hyung-Doo; Kang, Ben; Choi, So Yoon; Ki, Chang-Seok; Lee, Soo-Youn; Kim, Jong-Won; Song, Junghan; Choe, Yon Ho

    2016-04-21

    Molecular diagnosis of glycogen storage diseases (GSDs) is important to enable accurate diagnoses and make appropriate therapeutic plans. The aim of this study was to evaluate the PHKA2 mutation spectrum in Korean patients with GSD type IX. Thirteen Korean patients were tested for PHKA2 mutations using direct sequencing and a multiplex polymerase chain reaction method. A comprehensive review of the literature on previously reported PHKA2 mutations in other ethnic populations was conducted for comparison. Among 13 patients tested, six unrelated male patients with GSD IX aged 2 to 6 years at the first diagnostic work-up for hepatomegaly with elevated aspartate transaminase (AST) and alanine transaminase (ALT) were found to have PHKA2 mutations. These patients had different PHKA2 mutations: five were known mutations (c.537 + 5G > A, c.884G > A [p.Arg295His], c.3210_3212delGAG [p.Arg1072del], exon 8 deletion, and exons 27-33 deletion) and one was a novel mutation (exons 18-33 deletion). Notably, the most common type of mutation was gross deletion, in contrast to other ethnic populations in which the most common mutation type was sequence variant. This study expands our knowledge of the PHKA2 mutation spectrum of GSD IX. Considering the PHKA2 mutation spectrum in Korean patients with GSD IX, molecular diagnostic methods for deletions should be conducted in conjunction with direct sequence analysis to enable accurate molecular diagnosis of this disease in the Korean population.

  16. Gene therapy with adeno-associated virus vector 5-human factor IX in adults with hemophilia B

    DEFF Research Database (Denmark)

    Miesbach, Wolfgang; Meijer, Karina; Coppens, Michiel

    2018-01-01

    Hemophilia B gene therapy aims to ameliorate bleeding risk and provide endogenous factor IX (FIX) activity/synthesis through a single treatment, eliminating the requirement for FIX concentrate. AMT-060 combines an adeno-associated virus-5 (AAV5) vector with a liver-specific promoter driving...

  17. Imaging of CA IX with fluorescent labelled sulfonamides distinguishes hypoxic and (re)-oxygenated cells in a xenograft tumour model

    International Nuclear Information System (INIS)

    Dubois, Ludwig; Lieuwes, Natasja G.; Maresca, Alfonso; Thiry, Anne; Supuran, Claudiu T.; Scozzafava, Andrea; Wouters, Bradly G.; Lambin, Philippe

    2009-01-01

    Background and purpose: Carbonic anhydrase (CA) IX is suggested to be an endogenous marker of hypoxia. Fluorescent sulfonamides with a high affinity for CA IX (CAI) have been developed and shown to bind to cells only when CA IX protein was expressed and while cells were hypoxic. The aim of this study was to investigate the in vivo CAI binding properties in a xenograft tumour model using fluorescent imaging. Materials and methods: NMRI-nu mice subcutaneously transplanted with HT-29 colorectal tumours were treated with 7% oxygen or with nicotinamide and carbogen and were compared with control animals. CAI accumulation was monitored by non-invasive fluorescent imaging. Results: Specific CAI accumulation could be observed in delineated tumour areas as compared with a non-sulfonamide analogue (P < 0.01). Administration of nicotinamide and carbogen, decreasing acute and chronic hypoxia, respectively, prevented CAI accumulation (P < 0.05). When treated with 7% oxygen breathing, a 3-fold higher CAI accumulation (P < 0.01) was observed. Furthermore, the bound CAI fraction was rapidly reduced upon tumour reoxygenation (P < 0.01). Conclusions: Our in vivo imaging results confirm previous in vitro data demonstrating that CAI binding and retention require exposure to hypoxia. Fluorescent labelled sulfonamides provide a powerful tool to visualize hypoxia response. An important step is made towards clinical applicability, indicating the potential of patient selection for CA IX-directed therapies.

  18. Enhancing Title Ix Due Process Standards in Campus Sexual Assault Adjudication: Considering the Roles of Distributive, Procedural, and Restorative Justice

    Science.gov (United States)

    Harper, Shannon; Maskaly, Jon; Kirkner, Anne; Lorenz, Katherine

    2017-01-01

    Title IX prohibits sex discrimination--including sexual assault--in higher education. The Department of Education Office for Civil Rights' 2011 "Dear Colleague Letter" outlines recommendations for campus sexual assault adjudication allowing a variety of procedures that fail to protect accused students' due process rights and victims'…

  19. Title IX in Intercollegiate Athletics: Litigation Risks Facing Colleges and Universities. AGB Public Policy [Paper] Series, No. 93-2.

    Science.gov (United States)

    Kramer, Bill

    1993-01-01

    Recently Title IX lawsuits have highlighted the vulnerability of colleges and universities to claims of gender discrimination in intercollegiate athletics. Female athletes have sued schools for eliminating varsity sports and for failing to create varsity teams. In addition, discrimination claims related to other gender-based issues have been…

  20. Identification of genes encoding the type IX secretion system and secreted proteins in Flavobacterium columnare IA-S-4

    Science.gov (United States)

    Flavobacterium columnare, a member of the phylum Bacteroidetes, causes columnaris disease in wild and aquaculture-reared freshwater fish. The mechanisms responsible for columnaris disease are not known. Many members of the phylum Bacteroidetes use type IX secretion systems (T9SSs) to secrete enzymes...

  1. X-ray spectral line coincidences between fluorine VIII (and IX) and transition metal lines

    International Nuclear Information System (INIS)

    Charatis, G.; Rockett, P.D.; Burkhalter, P.G.

    1983-01-01

    X-ray spectroscopy was performed in the 12 to 15 A region, recording L-shell lines from selected laser-irradiated transition metals. Line coincidences and near coincidences were identified between Fe, Cr, Mn, and Ni L-spectra, and F VIII and F IX K-shell lines. Wavelengths were determined to accuracies of 1 to 3 mA and will be utilized in selecting potential pumping candidates in future x-ray lasing schemes. High-resolution x-ray spectra were collected under controlled illumination and target conditions using 1.05 μm and 0.527 μm laser excitation with the KMS CHROMA laser

  2. Prolactin-stimulated mitogenesis in the Nb2 rat lymphoma cell: Lack of protoporphyrin IX effects

    International Nuclear Information System (INIS)

    Gerrish, K.E.; Putnam, C.W.; Laird, H.E. II

    1990-01-01

    Pharmacological characterization of the Nb2 cell peripheral-type benzodiazepine receptor (PBR) was determined using selected 1,4-benzodiazepines, PK 11195, and protoporphyrin IX (PPIX) to compete for specific [ 3 H] Ro5-4864 binding. These data suggest that PPIX possesses an affinity for the Nb2 cell PBR. We have previously reported that the peripheral benzodiazepine ligands, Ro5-4864 and PK 11195, modulate prolactin-stimulated mitogenesis in the Nb2 cell. In contrast, PPIX, a putative endogenous ligand for the PBR had no effect on prolactin-stimulated mitogenesis in the Nb2 cell over the concentration range from 10 -15 M to 10 -6 M. Taken together these data show that PPIX has an affinity for the Nb2 cell PBR but does not modulate prolactin-stimulated mitogenesis at concentrations which should bind to the Nb2 cell PBR

  3. Prolactin-stimulated mitogenesis in the Nb2 rat lymphoma cell: Lack of protoporphyrin IX effects

    Energy Technology Data Exchange (ETDEWEB)

    Gerrish, K.E.; Putnam, C.W.; Laird, H.E. II (Univ. of Arizona, Tucson (USA))

    1990-01-01

    Pharmacological characterization of the Nb2 cell peripheral-type benzodiazepine receptor (PBR) was determined using selected 1,4-benzodiazepines, PK 11195, and protoporphyrin IX (PPIX) to compete for specific ({sup 3}H) Ro5-4864 binding. These data suggest that PPIX possesses an affinity for the Nb2 cell PBR. We have previously reported that the peripheral benzodiazepine ligands, Ro5-4864 and PK 11195, modulate prolactin-stimulated mitogenesis in the Nb2 cell. In contrast, PPIX, a putative endogenous ligand for the PBR had no effect on prolactin-stimulated mitogenesis in the Nb2 cell over the concentration range from 10{sup {minus}15} M to 10{sup {minus}6} M. Taken together these data show that PPIX has an affinity for the Nb2 cell PBR but does not modulate prolactin-stimulated mitogenesis at concentrations which should bind to the Nb2 cell PBR.

  4. 5. IX avati Pärnus paralleelselt Eesti Litograafiakeskuse korraldatud litograafiasümpoosioniga...

    Index Scriptorium Estoniae

    2003-01-01

    Litograafiakeskuses litograafia ajalugu tutvustav näitus. Pärnu kontserdimajas noorte - Jaak Visnap, Inga Heamägi, Kadri Alesmaa, Marko Mäetamm, Viljar Kõiv, Lembe Ruben - litograafianäitus "New generation". Endla teatri näitusesaalides näitus "Old Stars" - esinevad Evi Tihemets, Marje Üksine, Raul Meel, Leonhard Lapin, Tiia Külv, Urmas Vaino, Herald Eelma. Teatri Küüni ja kohviku seintel noorte soome ja rootsi litograafide tööd. Pärnu mudaravilas ülevaade litokeskuse kursustel valminud töödest. Endises Linnagaleriis Rüütli t. näitus 6.-12. IX sümpoosioni raames toimunud workshop'ide töödest

  5. Expression of functional recombinant human factor IX in milk of mice.

    Science.gov (United States)

    Lisauskas, Sharon F C; Cunha, Nicolau B; Vianna, Giovanni R; Mendes, Erica A; Ramos, Gustavo L; Maranhão, Andréia Q; Brígido, Marcelo M; Almeida, Jussara O S C; Baptista, Heloisa A; Motta, Fabiana L T; Pesquero, João B; Aragão, Francisco J L; Rech, Elíbio L

    2008-12-01

    Human factor IX is synthesized in the liver and secreted in the blood, where it participates in a group of reactions involving coagulation factors and proteins that permit sanguinary coagulation. In this work two lines of transgenic mice were developed to express the FIX gene in the mammalian glands under control of milk beta-casein promoter. The founding females secreted the FIX in their milk (3% total soluble protein). The stable integration of transgene was confirmed by southern blot analysis. The presence of the FIX recombinant protein in the milk of transgenic females was confirmed by western blot and the clotting activity was revealed in blood-clotting assays. The coagulation activity in human blood treated with recombinant FIX increased while the time of coagulation decreased. Our results confirm the production of a large amount of recombinant biologically active FIX in the mammary gland of transgenic mice.

  6. VizieR Online Data Catalog: MYStIX candidate protostars (Romine+, 2016)

    Science.gov (United States)

    Romine, G.; Feigelson, E. D.; Getman, K. V.; Kuhn, M. A.; Povich, M. S.

    2017-04-01

    The present study seeks protostars from the Massive Young Star-forming complex in Infrared and X-ray (MYStIX) survey catalogs. We combine objects with protostellar infrared SEDs and 4.5um excesses with X-ray sources exhibiting ultrahard spectra denoting very heavy obscuration. These criteria filter away nearly all of the older Class II-III stars and contaminant populations, but give very incomplete samples. The result is a list of 1109 protostellar candidates in 14 star-forming regions. See sections 1 and 2 for further explanations. The reliability of the catalog is strengthened because a large majority (86%) are found to be associated with dense cores seen in Herschel 500um maps that trace cold dust emission. However, the candidate list requires more detailed study for confirmation and cannot be viewed as an unbiased view of star formation in the clouds. (3 data files).

  7. PENGEMBANGAN MEDIA PEMBELAJARAN DALAM BENTUK MACROMEDIA FLASH MATERI TABUNG UNTUK SMP KELAS IX

    Directory of Open Access Journals (Sweden)

    Majidah Khairani

    2016-05-01

    Full Text Available The purpose of the research is to produce media-based math learning macromedia flash on the subject of the cylinder in the junior class IX valid, practical and efective for her then experimented to see the potential effects of media-based learning macromedia flash cylinder subject to students' understanding of concepts. The method used is the development of research that consists of three phases: define, design and develop. The material validation result 74,64 was in good. The media was tried out at SMPN 44 Sijunjung. The students’ response in small and large-scale try out result 87,56 were in very good category (very practical. Obtained from testing the potential effects of instructional media using macromedia flash to the understanding of the concept of students is 78 in both categories. It can be concluded that the macromedia flash media-based learning subject that researchers develop effective cilinder used in the learning of mathematics.

  8. Complexity of immune responses to AAV transgene products - Example of factor IX.

    Science.gov (United States)

    Herzog, Roland W

    2017-05-29

    After two decades of research, in vivo gene transfer with adeno-associated viral (AAV) vectors has now resulted in successful treatments and even cures for several human diseases. However, the potential for immune responses against the therapeutic gene products remains one of the concerns as this approach is broadened to more patients, diverse diseases, and target organs. Immune responses following gene transfer of coagulation factor IX (FIX) for the treatment of the bleeding disorder hemophilia B has been extensively investigated in multiple animal models. Findings from these studies have not only influenced clinical trial design but have broader implications for other diseases. The impact of vector design and dose, as well as target organ/route of administration on humoral and cellular immune responses are reviewed. Furthermore, the potential for tolerance induction by hepatic gene transfer or combination with immune modulation is discussed. Copyright © 2017 Elsevier Inc. All rights reserved.

  9. Simulation of an IXS imaging analyzer with an extended scattering source

    Energy Technology Data Exchange (ETDEWEB)

    Suvorov, Alexey [Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II; Cai, Yong Q. [Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II

    2016-09-15

    A concept of an inelastic x-ray scattering (IXS) spectrograph with an imaging analyzer was proposed recently and discussed in a number of publications (see e.g. Ref.1). The imaging analyzer as proposed combines x-ray lenses with highly dispersive crystal optics. It allows conversion of the x-ray energy spectrum into a spatial image with very high energy resolution. However, the presented theoretical analysis of the spectrograph did not take into account details of the scattered radiation source, i.e. sample, and its impact on the spectrograph performance. Using numerical simulations we investigated the influence of the finite sample thickness, the scattering angle and the incident energy detuning on the analyzer image and the ultimate resolution.

  10. Campus Sexual Misconduct: Restorative Justice Approaches to Enhance Compliance With Title IX Guidance.

    Science.gov (United States)

    Koss, Mary P; Wilgus, Jay K; Williamsen, Kaaren M

    2014-07-01

    Campus response to sexual violence is increasingly governed by federal law and administrative guidance such as the 1972 Title IX, the 2011 Dear Colleague Letter (DCL), and the 2013 Violence Against Women Act. Educational institutions are directed to expand disciplinary responses and establish coordinated action to eliminate sexual violence and remedy its effects. Compliance fosters a quasi-criminal justice approach not suited to all sexual misconduct and inconsistent with developing practice in student conduct management. This article envisions restorative justice (RJ) enhancements to traditional student conduct processes that maintain compliance, expand options, empower victim choice, and increase responsiveness to DCL aims. The article (1) defines sexual violence and sexual harassment within the DCL scope, (2) elaborates the DCL position on permissible alternative resolutions and differentiates mediation from RJ, (3) sequences action steps from case report to finalization, including both restorative and traditional justice pathways; and (4) discusses building support for innovation beginning with existing campus response. © The Author(s) 2014.

  11. Proceedings of IX International Conference for Renewable Energy, Energy Saving and Energy Education (CIER 2017)

    International Nuclear Information System (INIS)

    2017-01-01

    The Study Centre for Renewable Energy Technologies (CETER) located at the Technological University of Havana Jose Antonio Echeverria (CUJAE) Cuba hosted the IX International Renewable Energy Conference, Energy Saving and Energy Education (CIER 2017). The current focus on Cuba's renewable energy sector is ambitious with the Government proposing to boost investment by USD 3.5 billion in order to reach its goal of generating 24 per cent of its power from renewable energy by 2030. CIER 2017 brought together hundreds of scientist, engineers, manufactures, investors, policy makers, energy users and other specialists from across the entire international renewable energy spectrum to exchange knowledge, debate and analyze the global efforts currently being carried out in the field. This is all with the objective of intensifying the introduction of renewable energy technologies and promoting the sustainable energetic development in Cuba and the Caribe.

  12. Classification of alpha 1-adrenoceptor subtypes

    NARCIS (Netherlands)

    Michel, M. C.; Kenny, B.; Schwinn, D. A.

    1995-01-01

    Two alpha 1-adrenoceptor subtypes (alpha 1A and alpha 1B) have been detected in various tissues by pharmacological techniques, and three distinct cDNAs encoding alpha 1-adrenoceptor subtypes have been cloned. The profile of an increasing number of subtype-selective compounds at cloned and endogenous

  13. Ares I-X Range Safety Simulation Verification and Analysis IV and V

    Science.gov (United States)

    Tarpley, Ashley; Beaty, James; Starr, Brett

    2010-01-01

    NASA s ARES I-X vehicle launched on a suborbital test flight from the Eastern Range in Florida on October 28, 2009. NASA generated a Range Safety (RS) flight data package to meet the RS trajectory data requirements defined in the Air Force Space Command Manual 91-710. Some products included in the flight data package were a nominal ascent trajectory, ascent flight envelope trajectories, and malfunction turn trajectories. These data are used by the Air Force s 45th Space Wing (45SW) to ensure Eastern Range public safety and to make flight termination decisions on launch day. Due to the criticality of the RS data in regards to public safety and mission success, an independent validation and verification (IV&V) effort was undertaken to accompany the data generation analyses to ensure utmost data quality and correct adherence to requirements. Multiple NASA centers and contractor organizations were assigned specific products to IV&V. The data generation and IV&V work was coordinated through the Launch Constellation Range Safety Panel s Trajectory Working Group, which included members from the prime and IV&V organizations as well as the 45SW. As a result of the IV&V efforts, the RS product package was delivered with confidence that two independent organizations using separate simulation software generated data to meet the range requirements and yielded similar results. This document captures ARES I-X RS product IV&V analysis, including the methodology used to verify inputs, simulation, and output data for an RS product. Additionally a discussion of lessons learned is presented to capture advantages and disadvantages to the IV&V processes used.

  14. Pengembangan Soal Penalaran Model TIMSS Konteks Sumatera Selatan di Kelas IX SMP

    Directory of Open Access Journals (Sweden)

    Hazlita Hazlita

    2015-10-01

    Full Text Available AbstrakPenelitian ini bertujuan untuk menghasilkan soal-soal penalaran model TIMSS konteks Sumatera Selatan yang valid dan praktis dan untuk melihat efek potensial soal matematika tipe TIMSS konteks Sumatera Selatan terhadap kemampuan penalaran matematis siswa. Subjek penelitian adalah siswa kelas IX SMPN 9 Palembang yang berjumlah 29 orang. Metode penelitian adalah penelitian pengembangan. Hasil penelitian menunjukkan bahwa sebanyak 37,93% siswa menunjukkan tingkat kemampuan penalaran matematis yang baik. Sebanyak 55,17% siswa menunjukkan tingkat kemampuan penalaran matematis yang cukup dan sebanyak 6,90% siswa menunjukkan tingkat kemampuan penalaran matematis yang kurang. Berdasarkan hasil tes tersebut, jika nilai rata-rata siswa siswa sebesar 39,24 dijadikan sebagai batas acuan, maka bisa disimpulkan bahwa 31,03% siswa memiliki kemampuan penalaran matematis yang kurang, sementara 68,97% siswa sudah memiliki kemampuan pelanaran matematis yang cukup baik. Kata Kunci: Soal Penalaran; TIMSS; Konteks Sumatera Selatan  AbstractThe aim of this research was developing valid and practical TIMSS reasoning problem on mathematics context of South Sumatra. The subjects of this research were 29 students of class IX SMPN 9 Palembang. The method of research is the development of research. The results showed that 37.93% of students showed levels of good mathematical reasoning abilities, 55.17% of students showed levels sufficient mathematical reasoning ability and 6.90% of students showed levels of mathematical reasoning abilities are lacking. Based on the test results, if the 39.24 was determined as minimum limit of success, it means that 31.03% of students have less mathematical reasoning ability, while 68.97% of students already have sufficient mathematical reasoning ability. Keywords: Problem Reasoning; TIMSS; Context South Sumatra

  15. Seth Nicholson's First Satellite Discovery: Jupiter IX and His Orbit for It

    Science.gov (United States)

    Osterbrock, Donald E.

    2006-12-01

    Seth B. Nicholson was a graduate astronomy student at the University of California in Berkeley when he discovered his first satellite in 1914. He was later to discover three more, after he had joined the Mount Wilson Observatory staff following his PhD in 1915. Nicholson had begun his thesis on the problem of computing an improved orbit for J VIII, which had been discovered by Melotte in England in 1908, a distant irregular satellite like J VI and J VII. Nicholson was taking photographic plates to measure the position of J VIII in the summer of 1914 with the Crossley 36-inch reflector of Lick Observatory. He was a teaching assistant at Berkeley that summer, but would go up to Mount Hamilton to observe on weekends in the dark of the moon, traveling by rail, stage (an automobile on a regular schedule between San Jose and the observatory) and interurban trolley car, and sleeping in a shed near the Crossley dome. He first saw J IX as a much fainter object with the same motion as J VIII on a plate he took in late July 1914, and realized it must be another satellite of the giant planet. Nicholson obtained his first orbit of J IX, which had by then become his new thesis topic, in September, and published a paper on it in early 1915. Its orbit, like that of J VIII, was retrograde and irregular, but it was considerably fainter. Nicholson, a loyal student of Armin O. Leuschner, the head of the Berkeley Astronomy Division, used his teacher's "short method" (or analytic method) to calculate the orbit.

  16. Detection limits of 405 nm and 633 nm excited PpIX fluorescence for brain tumor detection during stereotactic biopsy

    Science.gov (United States)

    Markwardt, Niklas; Götz, Marcus; Haj-Hosseini, Neda; Hollnburger, Bastian; Sroka, Ronald; Stepp, Herbert; Zelenkov, Petr; Rühm, Adrian

    2016-04-01

    5-aminolevulinic-acid-(5-ALA)-induced protoporphyrin IX (PpIX) fluorescence may be used to improve stereotactic brain tumor biopsies. In this study, the sensitivity of PpIX-based tumor detection has been investigated for two potential excitation wavelengths (405 nm, 633 nm). Using a 200 μm fiber in contact with semi-infinite optical phantoms containing ink and Lipovenös, PpIX detection limits of 4.0 nM and 200 nM (relating to 1 mW excitation power) were determined for 405 nm and 633 nm excitation, respectively. Hence, typical PpIX concentrations in glioblastomas of a few μM should be well detectable with both wavelengths. Additionally, blood layers of selected thicknesses were placed between fiber and phantom. Red excitation was shown to be considerably less affected by blood interference: A 50 μm blood layer, for instance, blocked the 405- nm-excited fluorescence completely, but reduced the 633-nm-excited signal by less than 50%. Ray tracing simulations demonstrated that - without blood layer - the sensitivity advantage of 405 nm rises for decreasing fluorescent volume from 50-fold to a maximum of 100-fold. However, at a tumor volume of 1 mm3, which is a typical biopsy sample size, the 633-nm-excited fluorescence signal is only reduced by about 10%. Further simulations revealed that with increasing fiber-tumor distance, the signal drops faster for 405 nm. This reduces the risk of detecting tumor tissue outside the needle's coverage, but diminishes the overlap between optically and mechanically sampled volumes. While 405 nm generally offers a higher sensitivity, 633 nm is more sensitive to distant tumors and considerably superior in case of blood-covered tumor tissue.

  17. Expression of CA-IX is associated with advanced stage tumors and poor survival in oral squamous cell carcinoma patients.

    Science.gov (United States)

    Pérez-Sayáns, Mario; Suárez-Peñaranda, José Manuel; Pilar, Gayoso-Diz; Supuran, Claudiu T; Pastorekova, Silvia; Barros-Angueira, Francisco; Gándara-Rey, José Manuel; García-García, Abel

    2012-10-01

    Carbonic anhydrases (CAs), a group of ubiquitously expressed metalloenzymes, are involved in numerous physiological and pathological processes, including tumorigenicity. Specifically, CA-IX has been primarily found in hypoxic tumor tissues. This is a retrospective study of tumors from the Tissue Bank of the Pathology Department of the University Hospital of Santiago de Compostela. We selected 50 oral squamous cell carcinomas (OSCCs) using Tissue Microarray (TMA) technology. The immunohistochemical study was performed to determine CA-IX expression. The resulting data were subject to statistical analysis and survival curves. Of the 50 cases, 23 were detected in early stages (I and II) and 27 in advanced stages (III and IV). In the first year, almost 50% of patients in stages III-IV died, which contrasted with those patients in initial stages who registered a survival rate of 80% (P = 0.019). Regarding the expression of CA-IX, nine cases (18%) were negative, 18 cases (36%) were moderate, while 23 cases (46%) were intense. Tumors in stages I-II showed a positivity of 52.6%; however, in advanced stages, the percentage reached 95.5% (P = 0.002). Regarding CA-IX expression and survival, patients with tumors with strong staining had a lower average survival time (13.8 months) than patients with negative or weak-moderate staining (33.4 and 32.8 months, respectively), log-rank=6.1, P value=0.0484. Early diagnosis of these tumors is essential to improve patient survival. CA-IX expression augments with increasing tumor stage, probably related with the degree of hypoxia; thus, its measurement can be used as a prognostic factor. © 2012 John Wiley & Sons A/S.

  18. Triplication of alpha-globin genes is responsible for unusual alpha 113Leu/alpha 113His-globin chain ratios in sheep.

    Science.gov (United States)

    Vestri, R; Masina, P; Rando, A; Testa, A; Di Gregorio, P

    1987-10-01

    By investigations at the DNA and protein level, it has been shown that in sheep a previously detected, presumed quantitative allele of the II alpha 113His gene, displaying a reduced efficiency (called the II alpha 113His decreases gene), is carried by a chromosome bearing three alpha-globin loci. In particular, five sheep having an alpha 113Leu/alpha 113His-chain ratio of about 13:1 (13:1 phenotype) possessed the -I alpha 113Leu-II alpha 113Leu-/-I alpha 113Leu-II alpha 113Leu-III alpha 113His decreases genotype. One sheep showing a alpha 113Leu/alpha 113His-chain ratio of about 3:1 (3:1 phenotype) had the -I alpha 113Leu-II alpha 113His-/-I alpha 113Leu-II alpha 113Leu-III alpha 113His decreases genotype, while one sheep having a chain ratio of about 6:1 (6:1 phenotype) carried the -I alpha 113Leu-II alpha 113Leu-II alpha 113His decreases-/-I alpha 113Leu-II alpha 113Leu-III alpha 113His decreases genotype. Nineteen sheep, displaying the common phenotypes, all possessed the alpha alpha/alpha alpha gene arrangement. Furthermore, the possible location of the gene with reduced efficiency and the expression of the three genes in the triple alpha-globin loci chromosome are discussed.

  19. The natural history of glycogen storage disease types VI and IX: Long-term outcome from the largest metabolic center in Canada.

    Science.gov (United States)

    Roscher, Anne; Patel, Jaina; Hewson, Stacy; Nagy, Laura; Feigenbaum, Annette; Kronick, Jonathan; Raiman, Julian; Schulze, Andreas; Siriwardena, Komudi; Mercimek-Mahmutoglu, Saadet

    2014-11-01

    Glycogen storage disease (GSD) types VI and IX are caused by phosphorylase system deficiencies. To evaluate the natural history and long-term treatment outcome of the patients with GSD-VI and -IX, we performed an observational retrospective case study of 21 patients with confirmed diagnosis of GSD-VI or -IX. All patients with GSD-VI or -IX, diagnosed at The Hospital for Sick Children, were included. Electronic and paper charts were reviewed for clinical features, biochemical investigations, molecular genetic testing, diagnostic imaging, long-term outcome and treatment by two independent research team members. All information was entered into an Excel database. We report on the natural history and treatment outcomes of the 21 patients with GSD-VI and -IX and 16 novel pathogenic mutations in the PHKA2, PHKB, PHKG2 and PYGL genes. We report for the first time likely liver adenoma on liver ultrasound and liver fibrosis on liver biopsy specimens in patients with GSD-VI and mild cardiomyopathy on echocardiography in patients with GSD-VI and -IXb. We recommend close monitoring in all patients with GSD-VI and -IX for the long-term liver and cardiac complications. There is a need for future studies if uncooked cornstarch and high protein diet would be able to prevent long-term complications of GSD-VI and -IX. Crown Copyright © 2014. Published by Elsevier Inc. All rights reserved.

  20. Contribution to the study of the alpha-alpha interaction

    International Nuclear Information System (INIS)

    Darriulat, Pierre

    1965-01-01

    The new variable energy cyclotron at Berkeley that can accelerate an alpha beam up to an energy of 130 MeV and the mass production of lithium diffused junctions have enabled us to perform 2 series of measurement, in the first one we use alpha beams with an energy ranging between 50 and 120 MeV to study alpha-alpha forces in the second one we use the flexibility of the variable energy cyclotron the resonances around 40 MeV, region that can not yet be reached by tandem accelerators. This work is divided into 6 chapters. The first chapter is dedicated to the formalism of partial wave analysis and the theory of the compound nucleus. In the second chapter the author presents the 88 cyclotron at Berkeley and the diffusion chamber, the alpha detectors are lithium diffused junctions made of silicon. The third chapter deals with the experimental methods used and the issue of the reduction of the volume of data. In the fourth chapter the results obtained in the upper part of the energy range are described in terms of complex shifts that allow the description of the α-α interaction at high energy. The very low impact parameter has enabled us to find 2 new components (l=6 and l=8) of the rotational spectrum and to define a more accurate phenomenological potential. The fifth chapter is dedicated to the narrow resonances we have found between 12 and 27 MeV. We present in the last chapter a calculation of the binding energy of C 12 in which we have considered the 12 C nucleus as formed by 3 alpha particles interacting with each other through the phenomenological potential defined above

  1. Workshop on Precision Measurements of $\\alpha_s$

    Energy Technology Data Exchange (ETDEWEB)

    Bethke, Siegfried; /Munich, Max Planck Inst.; Hoang, Andre H.; /Vienna U.; Kluth, Stefan; /Munich, Max Planck Inst.; Schieck, Jochen; /Munich U.; Stewart, Iain W.; Aoki, S.; Beneke, M.; Bethke, S.; Blumlein, J.; Brambilla, N.; Brodsky, S.; /MIT, LNS

    2011-10-01

    These are the proceedings of the Workshop on Precision Measurements of {alpha}{sub s} held at the Max-Planck-Institute for Physics, Munich, February 9-11, 2011. The workshop explored in depth the determination of {alpha}{sub s}(m{sub Z}) in the {ovr MS} scheme from the key categories where high precision measurements are currently being made, including DIS and global PDF fits, {tau}-decays, electro-weak precision observables and Z-decays, event-shapes, and lattice QCD. These proceedings contain a short summary contribution from the speakers, as well as the lists of authors, conveners, participants, and talks.

  2. THYMUS PEPTIDES (THYMULIN, THYMOSIN ALPHA 1 AND THYMOSIN BETA 4 INHIBITING EFFECTS ON THE INTRINSIC BLOOD COAGULATION PATHWAY IN RATS

    Directory of Open Access Journals (Sweden)

    Negrin Negrev

    2017-08-01

    Full Text Available Thymus peptides (thymulin, thymosin alpha 1 and thymosin beta 4 inhibiting effects on the intrinsic blood coagulation pathway in rats Background and purpose: Hemostasis is a basic homeostatic mechanism protecting the body from thrombosis or haemorrhage. A number of pathological conditions, including multiple endocrine disorders modulate the balance between pro- and anticoagulation factors and establish conditions of hyper- or hypocoagulability. Endocrine effects of thymus gland on blood coagulation are not completely elucidated, and data existing on the theme are relatively scarce and partially controversial. The present study was designed to investigate thymus peptides (thymulin, thymosin alpha 1 and thymosin beta 4 effects on key intrinsic pathway plasma clotting factors XII, XI, IX, X and activated partial thromboplastin time (aPTT – a principal marker of blood coagulation via intrinsic pathway of hemocoagulation, in rats. Materials and methods: Plasma clotting factor activities and aPTT were studied on 52 male Wistar intact rats after 3 day s.c. application of the thymic peptides envisaged using routine kinetic coagulometry. Results of the study indicate a significant reduction of FXII activity by thymulin and thymosin alpha 1, and FXI and FIX activity by thymulin and thymosin beta 4. Conclusion: Upper results support the conclusion that thymus peptides thymulin, thymosin alpha 1 and thymosin beta 4 application in rats imposes a distinct tendency of hypocoagulability.

  3. Conditioning of alpha bearing wastes

    International Nuclear Information System (INIS)

    1991-01-01

    Alpha bearing wastes are generated during the reprocessing of spent fuel, mixed oxide fuel fabrication, decommissioning and other activities. The safe and effective management of these wastes is of particular importance owing to the radiotoxicity and long lived characteristics of certain transuranic (TRU) elements. The management of alpha bearing wastes involves a number of stages which include collection, characterization, segregation, treatment, conditioning, transport, storage and disposal. This report describes the currently available matrices and technologies for the conditioning of alpha wastes and relates them to their compatibility with the other stages of the waste management process. The selection of a specific immobilization process is dependent on the waste treatment state and the subsequent handling, transport, storage and disposal requirements. The overall objectives of immobilization are similar for all waste producers and processors, which are to produce: (a) Waste forms with sufficient mechanical, physical and chemical stability to satisfy all stages of handling, transport and storage (referred to as the short term requirements), and (b) Waste forms which will satisfy disposal requirements and inhibit the release of radionuclides to the biosphere (referred to as the long term requirements). Cement and bitumen processes have already been successfully applied to alpha waste conditioning on the industrial scale in many of the IAEA Member States. Cement systems based on BFS and pozzolanic cements have emerged as the principal encapsulation matrices for the full range of alpha bearing wastes. Alternative technologies, such as polymers and ceramics, are being developed for specific waste streams but are unlikely to meet widespread application owing to cost and process complexity. The merits of alpha waste conditioning are improved performance in transport, storage and disposal combined with enhanced public perception of waste management operations. These

  4. Induced Protoporphyrin IX Accumulation by the δ-Aminolevulinic Acid in Bacteria and its Potential Use in the Photodynamic Therapy

    Science.gov (United States)

    Brígido-Aparicio, Cyntiha; Ramón-Gallegos, Eva; Arenas-Huertero, Francisco Jesús; Uribe-Hernández, Raúl

    2008-08-01

    The increasing incident of resistant strains to antibiotic has encouraged the search of new antibacterial treatments, such as the photodynamic therapy. In recent years, photodynamic therapy has demonstrated being a good technology for the treatment of recurrent bacteria infection. PDT presents a hopeful approach to eliminate Gram positive and negative bacteria in immunological compromised patients. This therapy uses a laser in combination with a photosensibilizer in presence of intracellular molecular oxygen. The process generates an effect of phototoxicity in bacterial cells. The aim of this work was to determine the in vitro conditions to accumulate PpIX in effective concentrations in Staphylococcus aureus ATCC25923 and Streptococcus pyogenes, which are responsible of human cutaneous diseases. A cellular suspension of both strains was prepared in TSB to obtain growth in Log-phase, then, the suspensions were adjusted to a final concentration of 2.61×108 cells/mL. The strains were exposed to increasing concentrations from 0 to 160μg/mL of δ-ALA in order to determinate the concentration that induces the biggest accumulation of PpIX. PpIX was measured using the Piomelli method modified for bacteria. The concentration selected was 40 mg/mL of ALA. It was found that in basal concentration of δ-ALA (0 μg/mL) both strains accumulated similar amount of PpIX. In concentrations of 5 mg/mL of δ-ALA it was observed a significant (p<0.001) increment in PpIX concentration. Finally it was realized a kinetic to determinate the optimal accumulation over the time at 0, 5, 10, 15 and 30 min, and 1, 2, 4, 8, 16 and 32 h. It was found that the ideal time for PDT application, in both strains, was 24 h because in smaller times there was not statistically significant difference. The S. aureus ATCC25923 accumulated significantly the biggest concentration of PpIX with regard to S. pyogenes. In conclusion, it was found that the optimal conditions to apply PDT will be to expose both

  5. Killing malignant melanoma cells with protoporphyrin IX-loaded polymersome-mediated photodynamic therapy and cold atmospheric plasma

    Directory of Open Access Journals (Sweden)

    Wang M

    2017-05-01

    Full Text Available Mian Wang,1 Benjamin M Geilich,2 Michael Keidar,3 Thomas J Webster1,4 1Department of Chemical Engineering, 2Department of Bioengineering, Northeastern University, Boston, MA, 3Department of Mechanical and Aerospace Engineering, George Washington University, Washington, DC, USA; 4Wenzhou Institute of Biomaterials and Engineering, Wenzhou Medical University, Wenzhou, People’s Republic of China Abstract: Traditional cancer treatments contain several limitations such as incomplete ablation and multidrug resistance. It is known that photodynamic therapy (PDT is an effective treatment for several tumor types especially melanoma cells. During the PDT process, protoporphyrin IX (PpIX, an effective photosensitizer, can selectively kill cancer cells by activating a special light source. When tumor cells encapsulate a photosensitizer, they can be easily excited into an excited state by a light source. In this study, cold atmospheric plasma (CAP was used as a novel light source. Results of some studies have showed that cancer cells can be effectively killed by using either a light source or an individual treatment due to the generation of reactive oxygen species and electrons from a wide range of wavelengths, which suggest that CAP can act as a potential light source for anticancer applications compared with UV light sources. Results of the present in vitro study indicated for the first time that PpIX can be successfully loaded into polymersomes. Most importantly, cell viability studies revealed that PpIX-loaded polymersomes had a low toxicity to healthy fibroblasts (20% were killed at a concentration of 400 µg/mL, but they showed a great potential to selectively kill melanoma cells (almost 50% were killed. With the application of CAP posttreatment, melanoma cell viability significantly decreased (80% were killed compared to not using a light source (45% were killed or using a UV light source (65% were killed. In summary, these results indicated for the

  6. Improved Alpha Testing Using Hashed Sampling.

    Science.gov (United States)

    Wyman, Chris; McGuire, Morgan

    2017-08-14

    We further describe and analyze the idea of hashed alpha testing from Wyman and McGuire [1], which builds on stochastic alpha testing and simplifies stochastic transparency. Typically, alpha testing provides a simple mechanism to mask out complex silhouettes using simple proxy geometry with applied alpha textures. While widely used, alpha testing has a long-standing problem: geometry can disappear entirely as alpha mapped polygons recede with distance. As foveated rendering for virtual reality spreads, this problem worsens as peripheral minification and prefiltering introduce this problem on nearby objects.

  7. ALPHA,·ANTITRYPSIN DEFICIENCY*

    African Journals Online (AJOL)

    1971-02-06

    Feb 6, 1971 ... Lieberman," in fact, found that 15·2% of 66 patients hospitalized with pulmonary emphysema had heterozygous alpha,-antitrypsin deficiency. The over-all incidence of the deficiency was 25'8% in this group. Of patients under the age of 50 years, 47·8% had deficient levels. If such observations are confirmed ...

  8. Alpha sources deposit by sublimation

    International Nuclear Information System (INIS)

    Amoudry, F.; Eloy, J.F.

    1983-09-01

    We studied and realized a device able to perform some very thin substracts used for alpha spectrometry measurements. Sources are prepared by sublimation of the sample in a vacuum container. The energy required for this sublimation is furnished by a laser beam [fr

  9. Spectroscopic and theoretical studies of Ga(III)protoporphyrin-IX and its reactions with myoglobin.

    Science.gov (United States)

    Pinter, Tyler B J; Dodd, Erin L; Bohle, D Scott; Stillman, Martin J

    2012-03-19

    Ga(III)protoporphyrin-IX (Ga-PP) has been proposed as a model for the key interporphyrin interactions in malaria pigment. Unlike the paramagnetic parent iron heme derivatives, Ga-PP is readily soluble in methanol (MeOH). We report optical, mass spectroscopic, and theoretical results for Ga-PP as well as its reactions with myoglobin. UV-visible absorption and MCD spectroscopy show that Ga-PP exhibits a typical spectrum for a main group metal: a Q-band at 539 nm and a B band at 406 nm when dissolved in MeOH. We also report optical data for Zn(II)protoporphyrin IX (Zn-PP) dissolved in MeOH, which exhibits a Q-band at 545 nm and a B band at 415 nm. ESI mass spectral data for Ga-PP dissolved in MeOH show the presence of predominantly monomers, with smaller fractions of dimers [(Ga-PP)(2)] and trimers. UV-visible and MCD absorption spectroscopy and ESI mass spectral data demonstrate the successful insertion of monomeric Ga-PP into apo-Mb. Ga-PP-Mb exhibits a B band at 417 nm and Q bands at 545 and 584 nm, which are all red-shifted from the free Ga-PP values. The calculated electronic structures and frontier molecular orbitals of Ga-PP, (Ga-PP)(2) and Zn-PP fit the previously reported trends in band energies and oscillator strengths as a function of molecular orbital energies. These new data can be applied to explain the experimentally observed optical spectroscopy. The observed Q-band energies are accounted for by calculated (HOMO-LUMO) gap of the frontier MOs, while the split in the two top occupied MOs accounts for the magnitude of the Q-band oscillator strength as well as the experimentally observed Q to B band energy separation. Although Ga-PP shares more spectroscopic properties with Zn-PP than it does with Fe(III)PPIX, the trivalent oxidation state allows this molecule to be used as a model for ferric hemes in heme proteins. © 2012 American Chemical Society

  10. Hořava-Lifshitz bouncing Bianchi IX universes: A dynamical system analysis

    Science.gov (United States)

    Maier, Rodrigo; Soares, Ivano Damião

    2017-11-01

    We examine the Hamiltonian dynamics of bouncing Bianchi IX cosmologies with three scale factors in Hořava-Lifshitz (HL) gravity. We assume a positive cosmological constant plus noninteracting dust and radiation as the matter content of the models. In this framework the modified field equations contain additional terms which turn the dynamics nonsingular. The six-dimensional phase space presents (i) two critical points in a finite region of the phase space, (ii) one asymptotic de Sitter attractor at infinity and (iii) a two-dimensional invariant plane containing the critical points; together they organize the dynamics of the phase space. We identify four distinct parameter domains A , B , C and D for which the pair of critical points engenders distinct features in the dynamics, connected to the presence of centers of multiplicity 2 and saddles of multiplicity 2. In the domain A the dynamics consists basically of periodic bouncing orbits, or oscillatory orbits with a finite number of bounces before escaping to the de Sitter attractor. The center with multiplicity 2 engenders in its neighborhood the topology of stable and unstable cylinders R ×S3 of orbits, where R is a saddle direction and S3 is the center manifold of unstable periodic orbits. We show that the stable and unstable cylinders coalesce, realizing a smooth homoclinic connection to the center manifold, a rare event of regular/nonchaotic dynamics in bouncing Bianchi IX cosmologies. The presence of a saddle of multiplicity 2 in the domain B engenders a high instability in the dynamics so that the cylinders emerging from the center manifold about P2 towards the bounce have four distinct attractors: the center manifold itself, the de Sitter attractor at infinity and two further momentum-dominated attractors with infinite anisotropy. In the domain C we examine the features of invariant manifolds of orbits about a saddle of multiplicity 2 P2. The presence of the saddle of multiplicity 2 engenders bifurcations

  11. Two-peaked 5-ALA-induced PpIX fluorescence emission spectrum distinguishes glioblastomas from low grade gliomas and infiltrative component of glioblastomas.

    Science.gov (United States)

    Montcel, Bruno; Mahieu-Williame, Laurent; Armoiry, Xavier; Meyronet, David; Guyotat, Jacques

    2013-04-01

    5-ALA-induced protoporphyrin IX (PpIX) fluorescence enables to guiding in intra-operative surgical glioma resection. However at present, it has yet to be shown that this method is able to identify infiltrative component of glioma. In extracted tumor tissues we measured a two-peaked emission in low grade gliomas and in the infiltrative component of glioblastomas due to multiple photochemical states of PpIX. The second emission peak appearing at 620 nm (shifted by 14 nm from the main peak at 634 nm) limits the sensibility of current methods to measured PpIX concentration. We propose new measured parameters, by taking into consideration the two-peaked emission, to overcome these limitations in sensitivity. These parameters clearly distinguish the solid component of glioblastomas from low grade gliomas and infiltrative component of glioblastomas.

  12. Investigations on organic fungicides. IX. The antagonistic action of certain imidazole derivatives and of [alpha]-keto acids on the fungitoxicity of dimethyldithiocarbamates

    NARCIS (Netherlands)

    Kaars Sijpesteijn, A.; Kerk, G.J.M. van der

    1. 1. Apart from -histidine a variety of other imidazole derivatives is able to antagonize the inhibiting action of sodium dimethyl dithiocarbamate (NaDDC) on spore germination of moulds in the first zone of inhibition. 2. 2. - and -histidine, -histidinol and imidazole-4-carboxylic acid are of

  13. Identification of a new mutation in platelet glycoprotein IX (GPIX) in a patient with Bernard-Soulier syndrome.

    Science.gov (United States)

    Rivera, C E; Villagra, J; Riordan, M; Williams, S; Lindstrom, K J; Rick, M E

    2001-01-01

    We describe a new mutation in glycoprotein IX (GPIX) in a patient with Bernard-Soulier syndrome (BSS). Sequencing of GPIX revealed a homozygous (T-->C) transition at nucleotide 1717 (GenBank/HUMGPIX/M80478), resulting in a Cys(8) (TGT)-->Arg (CGT) replacement in the mature peptide. DNA restriction enzyme analysis using BsaAI revealed that the patient was homozygous and that his parents were heterozygous for the defect. This mutation disrupts a putative disulphide bond between the Cys(8) and Cys(12) that would alter the secondary structure of GPIX and which probably accounts for the absence of the GPIb/IX/V complex from the platelet surface in this patient.

  14. The Effect of Using Origami Paper to Teach the Perimeter of Plane Figures on Cognitive Achievement of Students Grade IX

    Directory of Open Access Journals (Sweden)

    Yael Narwastu Jati

    2017-03-01

    BAHASA INDONESIA ABSTRAK: Desain penelitian eksperimen ini dilakukan untuk melihat apakah terdapat pengaruh penggunaan kertas origami untuk mengajar keliling dari suatu bidang datar terhadap hasil belajar kognitif siswa kelas IX dan bagaimana penggunaan tersebut mempengaruhi hsil belajar. Sampel penelitian adalah 16 siswa kelas IX-A sebagai kelompok ekperimen yang akan menggunakan kertas origami. Data diperolehh dari hasil pre-tests dan post-tests. Hasil penelitian menunjukkan ada perbedaan rata-rata skor yang signifikan antara hasil pre-tests dan post-tests yang di duga, yaitu 4.0 (normalized gain, bahkan mencapai 0.8 yang termasuk golongan tinggi. Sehingga, dapat disimpulkan bahwa terdapat pengaruh pada hasil belajar kognitif pada pengajaran keliling suatu bidang datar dengan menggunakan kertas origami

  15. Guidelines and Data to Support Plans for Reallocating Food during Crisis Relocation. Regional Appendix. FEMA Region IX,

    Science.gov (United States)

    1982-09-01

    distributors in Region IX, Safeway Stores Inc., Associated Grocers and Alfred M Lewis Inc., have warehouses in Arizona. These distributors account for 63...CALIFORNIA 1 3,611,000 855 4,223 CERTIFIED GROCERS OF CALIF LOS ANGELES CA 2 SAFEWAY STORES 5 3,541,750 555 6,382 SAFE1WAY STORES INC DOWNEY CA 1,399,750...residents. Of the major distributors serving California, Certified Grocers (Los Angeles warehouse), Safeway Stores (Richmond, Santa Fe Springs and

  16. Flavobacterium johnsoniae Chitinase ChiA Is Required for Chitin Utilization and Is Secreted by the Type IX Secretion System

    OpenAIRE

    Kharade, Sampada S.; McBride, Mark J.

    2014-01-01

    Flavobacterium johnsoniae, a member of phylum Bacteriodetes, is a gliding bacterium that digests insoluble chitin and many other polysaccharides. A novel protein secretion system, the type IX secretion system (T9SS), is required for gliding motility and for chitin utilization. Five potential chitinases were identified by genome analysis. Fjoh_4555 (ChiA), a 168.9-kDa protein with two glycoside hydrolase family 18 (GH18) domains, was targeted for analysis. Disruption of chiA by insertional mut...

  17. Bio-anthropology and paleopathology of the SO10-IX muisca mummy from Sátivanorte, Boyacá, Colombia

    OpenAIRE

    Abel Fernando Martínez; Bernardo Francisco Meléndez; Fred Gustavo Manrique

    2010-01-01

    Introduction: The practice of artificial mummification of human corpses in America was common to most Andean pre-Hispanic societies to which the Muiscas belonged. Objective: bio-anthropologically and paleopathologically characterize the SO10-IX mummy. Materials and methods: Case and field history graphic study with invasive and non-invasive techniques. Results: Pre-Hispanic individual from the 14th century, male, 25 to 30 years of age. Macroscopic dental and osseous characteristics suggest ...

  18. Collegiate Athletic Opportunities For Women Under Title IX Raises The Proportionality Concern For Men’s Sports

    OpenAIRE

    Nina Compton; J. Douglas Compton

    2011-01-01

    Title IX of the Education Reformation Act was passed in 1972 for the purpose of providing equality between males and females in intercollegiate sports.  Since its inception the disparity between men’s and women’s varsity athletics programs has persisted throughout American colleges and universities.  Discrimination and equal protection concerns define the continuing debate of gender equality under the Act.  Campuses across the Nation have seen athletic departments add women’s varsity sport pr...

  19. The effect of a metalloproteinase inhibitor (GI5402) on tumor necrosis factor-alpha (TNF-alpha) and TNF-alpha receptors during human endotoxemia

    NARCIS (Netherlands)

    Dekkers, P. E.; Lauw, F. N.; ten Hove, T.; te Velde, A. A.; Lumley, P.; Becherer, D.; van Deventer, S. J.; van der Poll, T.

    1999-01-01

    Tumor necrosis factor-alpha (TNF-alpha) is released from the cell surface by cleavage of pro-TNF-alpha by metalloproteinases (MPs). In cell cultures, inhibition of MPs has been found not only to reduce the release of TNF-alpha, but also to enhance the surface expression of TNF-alpha and TNF-alpha

  20. The prevalence of alpha-1 antitrypsin deficiency in Ireland.

    LENUS (Irish Health Repository)

    Carroll, Tomas P

    2012-02-01

    BACKGROUND: Alpha-1 antitrypsin deficiency (AATD) results from mutations in the SERPINA1 gene and classically presents with early-onset emphysema and liver disease. The most common mutation presenting with clinical evidence is the Z mutation, while the S mutation is associated with a milder plasma deficiency. AATD is an under-diagnosed condition and the World Health Organisation recommends targeted detection programmes for AATD in patients with chronic obstructive pulmonary disease (COPD), non-responsive asthma, cryptogenic liver disease and first degree relatives of known AATD patients. METHODS: We present data from the first 3,000 individuals screened following ATS\\/ERS guidelines as part of the Irish National Targeted Detection Programme (INTDP). We also investigated a DNA collection of 1,100 individuals randomly sampled from the general population. Serum and DNA was collected from both groups and mutations in the SERPINA1 gene detected by phenotyping or genotyping. RESULTS: The Irish National Targeted Detection Programme identified 42 ZZ, 44 SZ, 14 SS, 430 MZ, 263 MS, 20 IX and 2 rare mutations. Analysis of 1,100 randomly selected individuals identified 113 MS, 46 MZ, 2 SS and 2 SZ genotypes. CONCLUSION: Our findings demonstrate that AATD in Ireland is more prevalent than previously estimated with Z and S allele frequencies among the highest in the world. Furthermore, our targeted detection programme enriched the population of those carrying the Z but not the S allele, suggesting the Z allele is more important in the pathogenesis of those conditions targeted by the detection programme.

  1. The prevalence of alpha-1 antitrypsin deficiency in Ireland.

    LENUS (Irish Health Repository)

    Carroll, Tomas P

    2011-07-13

    Abstract Background Alpha-1 antitrypsin deficiency (AATD) results from mutations in the SERPINA1 gene and classically presents with early-onset emphysema and liver disease. The most common mutation presenting with clinical evidence is the Z mutation, while the S mutation is associated with a milder plasma deficiency. AATD is an under-diagnosed condition and the World Health Organisation recommends targeted detection programmes for AATD in patients with chronic obstructive pulmonary disease (COPD), non-responsive asthma, cryptogenic liver disease and first degree relatives of known AATD patients. Methods We present data from the first 3,000 individuals screened following ATS\\/ERS guidelines as part of the Irish National Targeted Detection Programme (INTDP). We also investigated a DNA collection of 1,100 individuals randomly sampled from the general population. Serum and DNA was collected from both groups and mutations in the SERPINA1 gene detected by phenotyping or genotyping. Results The Irish National Targeted Detection Programme identified 42 ZZ, 44 SZ, 14 SS, 430 MZ, 263 MS, 20 IX and 2 rare mutations. Analysis of 1,100 randomly selected individuals identified 113 MS, 46 MZ, 2 SS and 2 SZ genotypes. Conclusion Our findings demonstrate that AATD in Ireland is more prevalent than previously estimated with Z and S allele frequencies among the highest in the world. Furthermore, our targeted detection programme enriched the population of those carrying the Z but not the S allele, suggesting the Z allele is more important in the pathogenesis of those conditions targeted by the detection programme.

  2. Protoporphyrin-IX fluorescence guided surgical resection in high-grade gliomas: The potential impact of human colour perception.

    Science.gov (United States)

    Petterssen, Max; Eljamel, Sarah; Eljamel, Sam

    2014-09-01

    Protoporphyrin-IX (Pp-IX) fluorescence had been used frequently in recent years to guide microsurgical resection of high-grade gliomas (HGG), particularly following the publication of a randomized controlled trial demonstrating its advantages. However, Pp-IX fluorescence is dependent upon the surgeons' eyes' perception of red fluorescent colour. This study was designed to evaluate human eye fluorescence perception and establish a fluorescence scale. 20 of 108 pre-recorded images from intraoperative fluorescence of HGG were used to construct an 8-panel visual analogue fluorescence scale. The scale was validated by testing 56 participants with normal colour vision and three red-green colour-blind participants. For intra-rater agreement ten participants were tested twice and for inter-observer reliability the whole cohort were tested. The intra- and inter-observer reliability of the scale in normal colour vision participants was excellent. The scale was less reliable in the violet-blue panels of the scale. Colour-blind participants were not able to distinguish between red fluorescence and blue-violet colours. The 8-panel fluorescence scale is valid in differentiating red, pink and blue colours in a fluorescence surgical field among participants with normal colour perception and potentially useful to standardize fluorescence-guided surgery. However, colourblind surgeons should not use fluorescence-guided surgery. Copyright © 2014 Elsevier B.V. All rights reserved.

  3. A novel library of saccharin and acesulfame derivatives as potent and selective inhibitors of carbonic anhydrase IX and XII isoforms.

    Science.gov (United States)

    Carradori, Simone; Secci, Daniela; De Monte, Celeste; Mollica, Adriano; Ceruso, Mariangela; Akdemir, Atilla; Sobolev, Anatoly P; Codispoti, Rossella; De Cosmi, Federica; Guglielmi, Paolo; Supuran, Claudiu T

    2016-03-01

    Small libraries of N-substituted saccharin and N-/O-substituted acesulfame derivatives were synthesized and tested as atypical and selective inhibitors of four different isoforms of human carbonic anhydrase (hCA I, II, IX and XII, EC 4.2.1.1). Most of them inhibited hCA XII in the low nanomolar range, hCA IX with KIs ranging between 19 and 2482nM, whereas they were poorly active against hCA II (KIs >10μM) and hCA I (KIs ranging between 318nM and 50μM). Since hCA I and II are ubiquitous off-target isoforms, whereas the cancer-related isoforms hCA IX and XII were recently validated as drug targets, these results represent an encouraging achievement in the development of new anticancer candidates. Moreover, the lack of a classical zinc binding group in the structure of these inhibitors opens innovative, yet unexplored scenarios for different mechanisms of inhibition that could explain the high inhibitory selectivity. A computational approach has been carried out to further rationalize the biological data and to characterize the binding mode of some of these inhibitors. Copyright © 2016 Elsevier Ltd. All rights reserved.

  4. Modifier activity of the protoporphyrin IX of the clastogenic damage induced by gamma radiation in Drosophila melanogaster; Actividad modificadora de la protoporfirina IX del dano clastogenico inducido por radiacion gamma en Drosophila melanogaster

    Energy Technology Data Exchange (ETDEWEB)

    Martinez A, G. [ININ, 52750 La Marquesa, Estado de Mexico (Mexico)

    2007-07-01

    It has been demonstrated that the copper sodium chlorophyllin (CCS) it is a potent inhibitor of the one genetic damage induced by physical or chemical agents in systems like: bacteria, Drosophila, rainbow trout and mammals. Nevertheless it has been observed that under certain conditions it promotes it. In the laboratory of Drosophila of the ININ evidences have been obtained that the CCS increases the percentage of lethal embryonic dominant and post-embryonic induced by gamma radiation. One of the probable causes of this effect promoter, is the oxidizer stress that it could cause the metallic center of the CCS. The objective of this investigation it was the evaluation of the inhibitory action of the protoporphyrin IX (PP-IX) of the genetic damage induced by gamma radiation in the germinal line of Drosophila melanogaster. For such effect it was used the lethal dominant test by means of two protocols: one in the one that the PP-IX or CCS was administered to the females and the other one to the males. Females of genotype y/y and males of the canton-S stump were used. In both cases the males were treated with 40 Gy of gamma radiation. Its were count the embryonic lethal dominant (L-E) and those post-embryonic (L-PE) of the F1. The results indicated that after the one pretreatment with PP-IX to the crossed females with males treaties increase the percentage of L-E (P {<=} 0.001) and it diminished that of L-PE (P {<=} 0.001) compared with the sucrose control more radiation, however when it was pretreated with CCS also it was observed an increment in the percentage of L-E (P {<=} 0.001), but it doesn't present effect on that of L-PE. In contrast, when the males were pretreated, it was observed that the PP-IX tends to increase those L-E, but diminished the L-PE (P {<=} 0.05), however when it was pretreated with CCS was observed that increased the percentage of L-E (P {<=} 0.001) but diminished that of L-PE (P {<=} 0.001). It was concluded that none of the two pigments

  5. Retargeting of adenovirus vectors through genetic fusion of a single-chain or single-domain antibody to capsid protein IX.

    Science.gov (United States)

    Poulin, Kathy L; Lanthier, Robert M; Smith, Adam C; Christou, Carin; Risco Quiroz, Milagros; Powell, Karen L; O'Meara, Ryan W; Kothary, Rashmi; Lorimer, Ian A; Parks, Robin J

    2010-10-01

    Adenovirus (Ad) vectors are the most commonly used system for gene therapy applications, due in part to their ability to infect a wide array of cell types and tissues. However, many therapies would benefit from the ability to target the Ad vector only to specific cells, such as tumor cells for cancer gene therapy. In this study, we investigated the utility of capsid protein IX (pIX) as a platform for the presentation of single-chain variable-fragment antibodies (scFv) and single-domain antibodies (sdAb) for virus retargeting. We show that scFv can be displayed on the capsid through genetic fusion to native pIX but that these molecules fail to retarget the virus, due to improper folding of the scFv. Redirecting expression of the fusion protein to the endoplasmic reticulum (ER) results in correct folding of the scFv and allows it to recognize its epitope; however, ER-targeted pIX-scFv was incorporated into the Ad capsid at a very low level which was not sufficient to retarget virus infection. In contrast, a pIX-sdAb construct was efficiently incorporated into the Ad capsid and enhanced virus infection of cells expressing the targeted receptor. Taken together, our data indicate that pIX is an effective platform for presentation of large targeting polypeptides on the surface of the virus capsid, but the nature of the ligand can significantly affect its association with virions.

  6. Specific Binding of Protoporphyrin IX to a Membrane-Bound 63 Kilodalton Polypeptide in Cucumber Cotyledons Treated with Diphenyl Ether-Type Herbicides

    Science.gov (United States)

    Sato, Ryo; Oshio, Hiromichi; Koike, Hiroyuki; Inoue, Yorinao; Yoshida, Shigeo; Takahashi, Nobutaka

    1991-01-01

    Porphyrin accumulation in excised cucumber cotyledons (Cucumis sativus L.) treated with a N-phenylimide S-23142 (N-[4-chloro-2-fluoro-5-propargyloxyphenyl]-3,4,5,6- tetrahydrophthalimide) and a diphenylether acifluorfen-ethyl (ethyl-5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitro benzoic acid) was studied. Most of the accumulated porphyrins were found in the membrane fractions of 6,000g and 30,000g pellets, forming a complex with a membrane polypeptide. The complex was solubilized with 1% n-dodecyl β-d-maltoside and its molecular mass was estimated to be 63,000 and 66,000 daltons by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and gel permeation high performance liquid chromatography (HPLC), respectively. The polypeptide also existed in untreated cotyledons but had little protoporphyrin IX. The complex was also formed in vitro by mixing the 30,000g pellets from untreated cotyledons and authentic protoporphyrin IX. However, protoporphyrin IX formed the complex specifically with the 63,000 dalton polypeptide and not with the other proteins both in vivo and in vitro. At least four fluorescent porphyrins, including protoporphyrin IX, were found in the acetone extract of the cotyledons by HPLC using a reversed phase column. Protoporphyrin IX was one of the two porphyrins that formed the complex. These results suggest that S-23142 and acifluorfenethyl enhance the accumulation of protoporphyrin IX, which forms the complex with the membrane protein. ImagesFigure 1Figure 3 PMID:16668204

  7. Calibration of sources for alpha spectroscopy systems

    International Nuclear Information System (INIS)

    Freitas, I.S.M.; Goncalez, O.L.

    1992-01-01

    This paper describes the calibration methodology for measuring the total alpha activity of plane and thin sources with the Alpha Spectrometer for Silicon Detector in the Nuclear Measures and Dosimetry laboratory at IEAv/CTA. (author)

  8. Effectiveness and competing capacity of native Rhizobium strains evaluated in IX Region soils

    International Nuclear Information System (INIS)

    Barrientos D, Leticia; Mendez A, Edith; Pino N, Ines

    1995-01-01

    Symbiotic nitrogen fixation in legumes reaches its optimum when the host plants are nodulated by highly competitive and effective Rhizobium strains. With the purpose of assessing competition and nitrogen fixing capacity of native Rhizobium leguminosarum bio-var trifolii strains, a greenhouse test was carried out using white clover (Trifolium re-pens) and four kinds of soils, which represent the main agroecological areas of the IX Region. Eleven strains were evaluated, they were both native and collected and were streptomycin sulphate antibiotic resistant. A nitrogen and a nitrogen-less without inoculation testers were used as controls. All pots received a solution of ammonium sulphate marked with 10% 15 N a.e, equivalent to 10 kg ha -1 of N. Rye-grass was used as reference crop, cv. Nu-i. In general, the evaluated strains were very efficient. After three or four cuts they became the only source of nitrogen for the plants. They were also very competitive, getting to over 70% of root infection with regard to those present in soils. In Curacautin and Tolten soils, biological nitrogen fixation begins later than other soils evaluated, which is coincident with soils having a higher nitrogen content. Symbiosis occurs when the soil nitrogen content exhausts or diminishes. (author)

  9. Projects from Federal Region IX: Department of Energy Appropriate Energy Technology Program. Part II

    Energy Technology Data Exchange (ETDEWEB)

    Case, C.W.; Clark, H.R.; Kay, J.; Lucarelli, F.B.; Rizer, S.

    1980-01-01

    Details and progress of appropriate energy technology programs in Region IX are presented. In Arizona, the projects are Solar Hot Water for the Prescott Adult Center and Solar Prototype House for a Residential Community. In California, the projects are Solar AquaDome Demonstration Project; Solar Powered Liquid Circulating Pump; Appropriate Energy Technology Resource Center; Digester for Wastewater Grown Aquatic Plants; Performance Characteristics of an Anaerobic Wastewater Lagoon Primary Treatment System; Appropriate Energy/Energy Conservation Demonstration Project; Solar Energy for Composting Toilets; Dry Creek Rancheria Solar Demonstration Projects; Demonstration for Energy Retrofit Analysis and Implementation; and Active Solar Space Heating System for the Integral Urban House. In Hawaii, the projects are: Java Plum Electric; Low-Cost Pond Digesters for Hawaiian Pig Farm Energy Needs; Solar Beeswax Melter; Methane Gas Plant for Operating Boilers and Generating Steam; and Solar Water Heating in Sugarcane Seed-Treatment Plants. A Wind-Powered Lighted Navigation Buoys Project for Guam is also described. A revised description of the Biogas Energy for Hawaiian Small Farms and Homesteads is given in an appendix.

  10. Activity of Gallium Meso- and Protoporphyrin IX against Biofilms of Multidrug-Resistant Acinetobacter baumannii Isolates

    Directory of Open Access Journals (Sweden)

    David Chang

    2016-03-01

    Full Text Available Acinetobacter baumannii is a challenging pathogen due to antimicrobial resistance and biofilm development. The role of iron in bacterial physiology has prompted the evaluation of iron-modulation as an antimicrobial strategy. The non-reducible iron analog gallium(III nitrate, Ga(NO33, has been shown to inhibit A. baumannii planktonic growth; however, utilization of heme-iron by clinical isolates has been associated with development of tolerance. These observations prompted the evaluation of iron-heme sources on planktonic and biofilm growth, as well as antimicrobial activities of gallium meso- and protoporphyrin IX (Ga-MPIX and Ga-PPIX, metal heme derivatives against planktonic and biofilm bacteria of multidrug-resistant (MDR clinical isolates of A. baumannii in vitro. Ga(NO33 was moderately effective at reducing planktonic bacteria (64 to 128 µM with little activity against biofilms (≥512 µM. In contrast, Ga-MPIX and Ga-PPIX were highly active against planktonic bacteria (0.25 to 8 µM. Cytotoxic effects in human fibroblasts were observed following exposure to concentrations exceeding 128 µM of Ga-MPIX and Ga-PPIX. We observed that the gallium metal heme conjugates were more active against planktonic and biofilm bacteria, possibly due to utilization of heme-iron as demonstrated by the enhanced effects on bacterial growth and biofilm formation.

  11. Recombinant to modified factor VIII and factor IX - chromogenic and one-stage assays issues.

    Science.gov (United States)

    Kitchen, S; Kershaw, G; Tiefenbacher, S

    2016-07-01

    The recent development of modified recombinant factor VIII (FVIII) and factor IX (FIX) therapeutic products with extended half-lives will create challenges for the haemostasis laboratory in obtaining recovery estimates of these products in clinical samples using existing assays. The new long-acting therapeutic concentrates contain molecular modifications of Fc fusion, site-specific of polyethylene glycol or albumin fusion. The optimum methods for monitoring each new product will need to be assessed individually and laboratories should select an assay which gives similar results to the assay used to assign potency to the product in question. For some extended half-life FVIII and FIX products some one stage assays are entirely unsuitable for monitoring purposes. For most products and assay reagents studied so far, and reviewed in this manuscript, chromogenic FVIII or FIX assays can be safely used with conventional plasma standards. If one stage assays are used then they should be performed using carefully selected reagents/methods which have been shown to recover activity close to the labelled potency for the specific product being monitored. © 2016 John Wiley & Sons Ltd.

  12. Zinc protoporphyrin IX stimulates tumor immunity by disrupting the immunosuppressive enzyme indoleamine 2,3-dioxygenase.

    Science.gov (United States)

    Metz, Richard; Duhadaway, James B; Rust, Sonja; Munn, David H; Muller, Alexander J; Mautino, Mario; Prendergast, George C

    2010-06-01

    The tryptophan catabolic enzyme indoleamine 2,3-dioxygenase (IDO) has emerged as an important driver of immune escape in a growing number of cancers and cancer-associated chronic infections. In this study, we define novel immunotherapeutic applications for the heme precursor compound zinc protoporphyrin IX (ZnPP) based on our discovery that it is a potent small-molecule inhibitor of IDO. Inhibitory activity was determined using in vitro and in-cell enzyme assays as well as a novel in vivo pharmacodynamic system. An irreversible mechanism of inhibition was documented, consistent with competition for heme binding in newly synthesized cellular protein. siRNA methodology and an IDO-deficient mouse strain were used to verify the specificity of ZnPP as an IDO inhibitor. In a preclinical model of melanoma, ZnPP displayed antitumor properties that relied on T-cell function and IDO integrity. ZnPP also phenocopied the known antitumor properties of IDO inhibitors in preclinical models of skin and breast carcinoma. Our results suggest clinical evaluation of ZnPP as an adjuvant immunochemotherapy in chronic infections and cancers in which there is emerging recognition of a pathophysiologic role for IDO dysregulation.

  13. Description of the Earth in the Works of Arabic Geographers from IX to XII Century

    Science.gov (United States)

    Cvijanovic, I.

    2012-12-01

    The works of Arabic writers provide data about shape, position and size of the Earth, planets and zodiac signs. They include preserved maps of Ibn Haukal, Al-Masudi and Al-Idrisi. Al-Masudi (871-956/7) made a map of the world and wrote that the Earth is round, before the Christians in Europe were ready to accept that idea. The famous geographer and cartographer Al-Idrisi (IX/X., died in 903/913.) has lived on the court of Norman king Roger II of Sicily, and after his death on the court of his son William I on Sicily, where he obtained the data from European and Arabic geographers. On the basis of this data he wrote a work known entitled Roger's book. Besides this important work he made a celestial globe and a map of the world in the shape of a silver disk. The lines that marked the borders of seven regions of the inhabited world were engraved on this disk. The Arabs had excellent knowledge of Greek astronomy and accepted their division of the world in seven climatic zones.

  14. Transgenic mice can express mutant human coagulation factor IX with higher level of clotting activity.

    Science.gov (United States)

    Yan, Jing-Bin; Wang, Shu; Huang, Wen-Ying; Xiao, Yan-Ping; Ren, Zhao-Rui; Huang, Shu-Zheng; Zeng, Yi-Tao

    2006-10-01

    To improve the available values of transgenic animals, we produced a mutant human coagulation factor IX minigene (including cDNA and intron I) with arginine at 338 changed to alanine (R338A-hFIX) by using a direct mutation technique. The R338A-hFIX minigene was then cloned into a plasmid carrying the goat beta-casein promoter to get a mammary gland-specific expression vector. The clotting activity in the supernatant of the transfected HC-11 cells increased to approximately three times more than that of wild-type hFIX. Nine transgenic mice (three females and six males) were produced, and the copy number of the foreign gene was very different, ranging from 1 to 43 in different lines. ELISA, Western blot, and clotting assay experiments showed that the transgenic mice could express R338A-hFIX, showing higher average levels of clotting activity than wild-type hFIX in the milk (103.76% vs. 49.95%). The highest concentration and clotting activity of hFIX reached 26 mug/mL and 1287% in one founder (F(0)-7), which was over 10 times higher than that in human plasma. Furthermore, RT-PCR, APTT assay, and histological analysis indicated that hFIX was expressed specifically in the mammary gland without affecting the intrinsic coagulation pathway and physiologic performance of the local tissue.

  15. Factor Activity Assays for Monitoring Extended Half-Life FVIII and Factor IX Replacement Therapies.

    Science.gov (United States)

    Kitchen, Steve; Tiefenbacher, Stefan; Gosselin, Robert

    2017-04-01

    The advent of modified factor VIII (FVIII) and factor IX (FIX) molecules with extended half-lives (EHLs) compared with native FVIII and FIX represents a major advance in the field of hemophilia care, with the potential to reduce the frequency of prophylactic injections and/or to increase the trough level prior to subsequent injections. Monitoring treatment through laboratory assays will be an important part of ensuring patient safety, including any tailoring of prophylaxis. Several approaches have been used to extend half-lives, including PEGylation, and fusion to albumin or immunoglobulin. Some of these modifications affect factor assays as routinely performed in hemophilia centers; so, laboratories will need to use FVIII and FIX assays which have been shown to be suitable on a product-by-product basis. For some products, there are marked differences between results obtained using one-stage or chromogenic assays and results obtained using different reagents in the one-stage assay. The laboratory should use an assay in which the recovery of the product closely aligns with the assay used by the pharmaceutical company to assign potency to the product, so that the units reported by the laboratory agree with those used to demonstrate efficacy of the product during clinical trials. Reported assay differences in relation to several of the EHL FVIII and FIX molecules will be reviewed in this article. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

  16. A Comparative Study of O2, CO and CN Binding to Heme IX Protein Models

    Directory of Open Access Journals (Sweden)

    Francisco Torrens

    2004-07-01

    Full Text Available Parametrization of a molecular-mechanics program to include terms specificfor five- and six-coordinate transition metal complexes results in computer-simulatedstructures of heme complexes. The principal new feature peculiar to five and sixcoordination is a term that measures the effect of electron-pair repulsion modified by theligand electronegativity and takes into account the different structural possibilities. Themodel system takes into account the structural differences of the fixing centre in thehaemoglobin subunits. The customary proximal histidine is added. The prosthetic groupheme IX is wholly considered in our model. The calculations show clearly that certainconformations are much more favourable that others for fixing O2. From the O2 bindingin haemoglobin, myoglobin and simple Fe porphyrin models it is concluded that the bentO2 ligand is best viewed as bound superoxide O2–. Axial ligands are practically free-rotating. A small modification of the model in both crystal and protein matrix affects theorientation of the ligands in experimental systems.

  17. Probing strong optical fields in compact aggregates of silver nanoparticles by SERRS of protoporphyrin IX.

    Science.gov (United States)

    Sládkova, Magdalena; Vlcková, Blanka; Mojzes, Peter; Slouf, Miroslav; Naudin, Coralie; Le Bourdon, Gwenelle

    2006-01-01

    TEM images and measurements of SERRS (surface-enhanced resonance Raman scattering) spectra as a function of the porphyrin concentrations in systems with unmodified and chloride-modified Ag nanoparticles and protoporphyrin IX (PPIX) are reported. TEM images have shown formation of compact aggregates in systems with chloride modified Ag nanoparticles, as opposed to systems with the unmodified particles constituted by isolated particles. SERRS spectra of PPIX as a function of PPIX concentration were measured and subjected to factor analysis. Two spectral components were identified and tentatively attributed to unperturbed PPIX and to Ag+ -PPIX surface species. Concentration value of the SERRS spectral detection limit of the latter species was determined to be nearly three orders of magnitude lower in the system with the compact aggregates than in the system with separated nanoparticles and achieves the value of 1 x 10(-10) M in a macrosampling Raman experiment. TEM images and SERRS-micro-Raman spectra of single compact aggregates of chloride-modified Ag nanoparticles incorporating PPIX molecules were acquired from a sample prepared by attachment of the aggregates to amine groups of derivatized, SiOx/formvar coated copper grids for TEM. The SERRS signal has shown large temporal fluctuations as well as variations from one aggregate to another. Within the signal fluctuations, a SERRS spectrum showing the characteristic bands of both SERRS spectral forms of PPIX and originating most probably from a few PPIX molecules located in hot spots in the interstices between the Ag nanoparticles, was obtained.

  18. PROFIL PERTANYAAN SISWA TUNANETRA KELAS IX SMPLB YKAB SURAKARTA DALAM PEMBELAJARAN MATEMATIKA

    Directory of Open Access Journals (Sweden)

    Siti Khoiriyah

    2015-10-01

    Full Text Available Abstract Thinking can be drilled to the student by developing question skill during teaching process. Personal life quality is determined from question quality; the more qualified a question the more success a person in life. Therefore, this study analyzed the students question to find out the students question quality. The subject of this study is IX class of SMPLB YKAB students Surakarta. The data was found by observation with handy cam. The data analysis was conducted through data reduction, data presentation and conclusion. From the data analysis was found the result that 89 questions from the students consist of 46 (51, 68 % questions that consist of C1, 2 elements (2,25 % questions that consist of C2, 25 elements (28,09 % questions that consist of C4 elements. Based on the finding of the study could be conclude that majority of visual impaired students in low categorize because of having C1, C2, and C3 elements.Keywords : visual impaired students question, mathematics learning.

  19. Fluorescently labeled substrates for monitoring α1,3-fucosyltransferase IX activity.

    Science.gov (United States)

    Lunau, Nathalie; Seelhorst, Katrin; Kahl, Stefanie; Tscherch, Kathrin; Stacke, Christina; Rohn, Sascha; Thiem, Joachim; Hahn, Ulrich; Meier, Chris

    2013-12-16

    Fucosylation is often the final process in glycan biosynthesis. The resulting glycans are involved in a variety of biological processes, such as cell adhesion, inflammation, or tumor metastasis. Fucosyltransferases catalyze the transfer of fucose residues from the activated donor molecule GDP-β-L-fucose to various acceptor molecules. However, detailed information about the reaction processes is still lacking for most fucosyltransferases. In this work we have monitored α1,3-fucosyltransferase activity. For both donor and acceptor substrates, the introduction of a fluorescent ATTO dye was the last step in the synthesis. The subsequent conversion of these substrates into fluorescently labeled products by α1,3-fucosyltransferases was examined by high-performance thin-layer chromatography coupled with mass spectrometry as well as dual-color fluorescence cross-correlation spectroscopy, which revealed that both fluorescently labeled donor GDP-β-L-fucose-ATTO 550 and acceptor N-acetyllactosamine-ATTO 647N were accepted by recombinant human fucosyltransferase IX and Helicobacter pylori α1,3-fucosyltransferase, respectively. Analysis by fluorescence cross-correlation spectroscopy allowed a quick and versatile estimation of the progress of the enzymatic reaction and therefore this method can be used as an alternative method for investigating fucosyltransferase reactions. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  20. Expression of human coagulation Factor IX in transgenic tomato (Lycopersicon esculentum).

    Science.gov (United States)

    Zhang, Hui; Zhao, Lingxia; Chen, Yuhui; Cui, Lijie; Ren, Weiwei; Tang, Kexuan

    2007-10-01

    In the present study, a plant binary expression vector PG-pRD12-hFIX (where PG is polygalacturonase) harbouring the hFIX (human coagulation Factor IX) gene was constructed and introduced into tomato (Lycopersicon esculentum) via Agrobacterium tumefaciens-mediated transformation. After kanamycin selection, 32 putative independent transgenic tomato plants were regenerated. PCR and Southern-blot analyses confirmed the transgenic status of some plants. RT (reverse transcription)-PCR analysis for the expression of the introduced gene (hFIX) demonstrated that the hFIX gene was expressed specifically in fruits of the tomato. Western-blot analysis confirmed the presence of a 56 kDa band specific to hFIX in the transformed tomatoes. ELISA results showed that the expression of hFIX protein reached a maximum of 15.84 ng/g fresh weight in mature fruit. A blood-clotting assay demonstrated the clotting activity of the expressed hFIX protein in transgenic tomato fruits. This is the first report on the expression of hFIX in plants, and our research provides potentially valuable knowledge for further development of the plant-derived therapeutic proteins.

  1. Photophysics, TiO2 sensitization and photovoltaic performance of Zn-ProtoporphyrinIX

    Science.gov (United States)

    Srinivasan, Venkatesan; Pavithra, Nagaraj; Anandan, Sambandam; Jaccob, Madhavan; Kathiravan, Arunkumar

    2017-04-01

    Chlorophylls are playing an important role in natural photosynthesis. Hence, in the present investigation, a chlorophyll analogue Zn-Protoporphyrin IX (ZnPPIX) was selected for dye sensitized solar cell applications. The properties of ZnPPIX were fully investigated by optical spectroscopy, attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), density functional theory (DFT) calculations, electrochemical and photovoltaic measurements. The optical and electrochemical HOMO-LUMO gaps were consistent with those estimated by PBE functional. The nature of the binding of ZnPPIX onto the TiO2 surface was investigated using ATR-FTIR and XPS measurements. The amount of adsorbed ZnPPIX on TiO2 surface was reasonably fit using the Langmuir adsorption isotherm, with a binding constant value of 25,800 M-1. The power conversion efficiency of ZnPPIX is smaller than those of reference cell under the optimized conditions (η = 0.6% for ZnPPIX; η = 6.3% for N3).

  2. Unravel the interaction of protoporphyrin IX with reduced graphene oxide by vital spectroscopic techniques

    Science.gov (United States)

    Jhonsi, Mariadoss Asha; Nithya, Chandrasekaran; Kathiravan, Arunkumar

    2017-05-01

    Probing interaction between dyes and reduced graphene oxide (rGO) is of contemporary research interest. Since, rGO is widely used as electron acceptor in photovoltaic and optoelectronic devices. Hence, we have investigated the interaction between protoporphyrin IX (PPIX) and rGO by vital spectroscopic techniques. The adsorption of PPIX on rGO is studied by Attenuated total reflection-Fourier transform infrared (ATR-FTIR) and X-ray photoelectron spectroscopic (XPS) measurements. The fluorescence quenching measurements are also performed and the fluorescence intensity of PPIX is quenched by rGO. The quenching of PPIX with rGO is evaluated by the Stern-Volmer equation and time-resolved fluorescence lifetime studies. The results revealed that the fluorescence quenching of PPIX with rGO is due to the static quenching mechanism. The dominant process for this quenching has been attributed to the process of electron transfer from excited state PPIX to rGO. Fluorescence lifetime measurements were used to calculate the rate of electron transfer process between excited state of PPIX and rGO. Transient absorption studies demonstrated the formation of PPIX cation radical for the evidence of electron transfer between PPIX and rGO.

  3. Eggshell pigmentation has no evident effects on offspring viability in common kestrels

    Czech Academy of Sciences Publication Activity Database

    Fargallo, J. A.; López-Rull, I.; Mikšík, Ivan; Eckhardt, Adam; Peralta-Sánchez, J. M.

    2014-01-01

    Roč. 28, č. 4 (2014), s. 627-637 ISSN 0269-7653 R&D Projects: GA ČR(CZ) GA13-17224S Institutional support: RVO:67985823 Keywords : biliverdin IX * egg colouration * eggshell proteins * falco tinnunculus * protoporphyrin IX Subject RIV: CB - Analytical Chemistry, Separation Impact factor: 2.517, year: 2014

  4. Enzyme replacement therapy for alpha-mannosidosis

    DEFF Research Database (Denmark)

    Borgwardt, Line Gutte; Dali, Christine I.; Fogh, J

    2013-01-01

    Alpha-mannosidosis (OMIM 248500) is a rare lysosomal storage disease (LSD) caused by alpha-mannosidase deficiency. Manifestations include intellectual disabilities, facial characteristics and hearing impairment. A recombinant human alpha-mannosidase (rhLAMAN) has been developed for weekly intrave...... intravenous enzyme replacement therapy (ERT). We present the preliminary data after 12 months of treatment....

  5. THE ALPHA/BETA-HYDROLASE FOLD

    NARCIS (Netherlands)

    OLLIS, DL; CHEAH, E; CYGLER, M; FROLOW, F; FRANKEN, SM; HAREL, M; REMINGTON, SJ; SILMAN, [No Value; SCHRAG, J; SUSSMAN, JL; VERSCHUEREN, KHG; GOLDMAN, A

    We have identified a new protein fold-the alpha/beta-hydrolase fold-that is common to several hydrolytic enzymes of widely differing phylogenetic origin and catalytic function. The core of each enzyme is similar: an alpha/beta-sheet, not barrel, of eight beta-sheets connected by alpha-helices. These

  6. Development of new synthetic routes to bile pigments and synthesis of deuterated porphyrins

    International Nuclear Information System (INIS)

    Shim, Y.K.

    1985-01-01

    New synthetic routes to pyrromethanones using hydrogen peroxide/pyridine upon alpha-free pyrromethanes and a synthesis of mesobiliverdin are described. The pyrromethanones were applied to the synthesis of mesobiliverdin using 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) oxidation of mesourbilin, to give a high yield of the desired mesobiliverdin. New synthetic methodology to pyrrolinones using various oxidizing reagents were also described. Treatment of alpha-free pyrrole with thallium(III) trifluoroacetate (TTFA) gave a mixture of a pyrrolinone and a dimeric compound. The yield and the ratio of the two products were variable depending upon the solvents and the mole ratio of the TTFA used. Pyrrolinone syntheses using the other oxidizing reagents are also described. Syntheses of carbon-14 labelled biliverdins are also described. In addition, the preparation of biliverdin IX-BETA using b-bilene route is described. The second part of this study contains an introduction to porphyrins and syntheses of 6,7-bis(2-methoxycarbonyl-1,1-dideuteroethyl)-1,3,5,8-tetramethyl-2,4-divinylporphyrin. The latter is important in the study of heme protein reconstitution experiments. As a result of numerous synthetic approaches the desired product was obtained from the appropriately deuterated formylpyrrole using the a,c-biladiene route

  7. Modifier activity of the protoporphyrin IX of the clastogenic damage induced by gamma radiation in Drosophila melanogaster

    International Nuclear Information System (INIS)

    Martinez A, G.

    2007-01-01

    It has been demonstrated that the copper sodium chlorophyllin (CCS) it is a potent inhibitor of the one genetic damage induced by physical or chemical agents in systems like: bacteria, Drosophila, rainbow trout and mammals. Nevertheless it has been observed that under certain conditions it promotes it. In the laboratory of Drosophila of the ININ evidences have been obtained that the CCS increases the percentage of lethal embryonic dominant and post-embryonic induced by gamma radiation. One of the probable causes of this effect promoter, is the oxidizer stress that it could cause the metallic center of the CCS. The objective of this investigation it was the evaluation of the inhibitory action of the protoporphyrin IX (PP-IX) of the genetic damage induced by gamma radiation in the germinal line of Drosophila melanogaster. For such effect it was used the lethal dominant test by means of two protocols: one in the one that the PP-IX or CCS was administered to the females and the other one to the males. Females of genotype y/y and males of the canton-S stump were used. In both cases the males were treated with 40 Gy of gamma radiation. Its were count the embryonic lethal dominant (L-E) and those post-embryonic (L-PE) of the F1. The results indicated that after the one pretreatment with PP-IX to the crossed females with males treaties increase the percentage of L-E (P ≤ 0.001) and it diminished that of L-PE (P ≤ 0.001) compared with the sucrose control more radiation, however when it was pretreated with CCS also it was observed an increment in the percentage of L-E (P ≤ 0.001), but it doesn't present effect on that of L-PE. In contrast, when the males were pretreated, it was observed that the PP-IX tends to increase those L-E, but diminished the L-PE (P ≤ 0.05), however when it was pretreated with CCS was observed that increased the percentage of L-E (P ≤ 0.001) but diminished that of L-PE (P ≤ 0.001). It was concluded that none of the two pigments act as

  8. Nature of the pygmy dipole resonance in Ce-140 studied in (alpha, alpha 'gamma) experiments

    NARCIS (Netherlands)

    Savran, D.; Babilon, M.; van den Berg, A.M.; Harakeh, M.N.; Hasper, J.; Matic, A.; Wörtche, H.J.; Zilges, A.

    2006-01-01

    A concentration of electric-dipole excitations below the particle threshold, which is frequently denoted as the pygmy dipole resonance, has been studied in the semimagic nucleus Ce-140 in (alpha, alpha(')gamma) experiments at E-alpha=136 MeV. The technique of alpha-gamma coincidence experiments

  9. Alternative splicing of T cell receptor (TCR) alpha chain transcripts containing V alpha 1 or V alpha 14 elements.

    Science.gov (United States)

    Mahotka, C; Hansen-Hagge, T E; Bartram, C R

    1995-10-01

    Human acute lymphoblastic leukemia cell lines represent valuable tools to investigate distinct steps of the complex regulatory pathways underlying T cell receptor recombination and expression. A case in point are V delta 2D delta 3 and subsequent V delta 2D delta 3J alpha rearrangements observed in human leukemic pre-B cells as well as in normal lymphopoiesis. The functional expression of these unusual (VD) delta (JC) alpha hybrids is almost exclusively prevented by alternative splicing events. In this report we show that alternative splicing at cryptic splice donor sites within V elements is not a unique feature of hybrid TCR delta/alpha transcripts. Among seven V alpha families analyzed by RT-PCR, alternatively spliced products were observed in TCR alpha recombinations containing V alpha 1 or V alpha 14 elements. In contrast to normal peripheral blood cells and thymocytes, the leukemia cell line JM expressing functional V alpha 1J alpha 3C alpha transcripts lacked evidence of aberrant TCR alpha RNA species.

  10. Alpha particles detection in nitrocellulose

    International Nuclear Information System (INIS)

    Romero C, M.

    1976-01-01

    The method for the manufacturing of the detection films follows these steps: preparation of the mass which includes nitrocellulose in the form of cotton as raw material ethyl acetate, cellosolve acetate, isopropyl and butyl alcohols as solvents and dioctyl phtalate as plasticiser; dilution of the paste; pouring of the diluted mass; and drying of the detection films. The results obtained experimentally are: The determination of the development times of the different thicknesses of the manufactured films. Response linearity of the detectors, variation of the number of tracks according to the distance of the source to the detector. Sizes of the diameter of the tracks depending of the distance detector-alpha emmission source. As a conclusion we can say the the nitrocellulose detectors are specific for alpha radiation; the more effective thicknesses in uranium prospecting works were those of 60 microns, since for the laboratory works the thicknesses of 30 to 40 microns were the ideal; the development technique of the detection films is simple and cheap and can be realized even in another place than the laboratory; this way of the manufacturing of nitrocellulose detection film sensitive to alpha nuclear radiation is open to future research. (author)

  11. Measurement and analysis of $\\alpha$ particle induced reactions on yttrium

    CERN Document Server

    Singh, N L; Chintalapudi, S N

    2000-01-01

    Excitation functions for /sup 89/Y[( alpha ,3n); ( alpha ,4n); ( alpha , p3n); ( alpha , alpha n); ( alpha , alpha 2n)] reactions were measured up to 50 MeV using stacked foil activation technique and HPGe gamma ray spectroscopy method. The experimental data were compared with calculations considering equilibrium as well as preequilibrium reactions according to the hybrid model of Blann (ALICE/90). For ( alpha , xnyp) type of reactions, the precompound contributions are described by the model. There seems to be indications of direct inelastic scattering effects in ( alpha , alpha xn) type of reactions. To the best of our knowledge, the excitation functions for ( alpha ,4n), ( alpha , p3n), ( alpha , alpha n) and ( alpha , alpha 2n) reactions were measured for the first time. (23 refs).

  12. Measurement and analysis of alpha particle induced reactions on yttrium

    Energy Technology Data Exchange (ETDEWEB)

    Singh, N.L.; Gadkari, M.S. [Baroda Univ. (India). Dept. of Physics; Chintalapudi, S.N. [IUC-DAEF Calcutta Centre, Calcutta (India)

    2000-05-01

    Excitation functions for {sup 89}Y[({alpha},3n);({alpha},4n);({alpha},p3n);({alpha},{alpha}n);({alpha},{alpha}2n)] reactions were measured up to 50 MeV using stacked foil activation technique and HPGe gamma ray spectroscopy method. The experimental data were compared with calculations considering equilibrium as well as preequilibrium reactions according to the hybrid model of Blann (ALICE/90). For ({alpha},xnyp) type of reactions, the precompound contributions are described by the model. There seems to be indications of direct inelastic scattering effects in ({alpha},{alpha}xn) type of reactions. To the best of our knowledge, the excitation functions for ({alpha},4n), ({alpha},p3n), ({alpha},{alpha}n) and ({alpha},{alpha}2n) reactions were measured for the first time. (orig.)

  13. A pilot study on potential plasma hypoxia markers in the radiotherapy of non-small cell lung cancer. Osteopontin, carbonic anhydrase IX and vascular endothelial growth factor

    Energy Technology Data Exchange (ETDEWEB)

    Ostheimer, C.; Bache, M.; Guettler, A.; Vordermark, D. [Martin-Luther-University Halle-Wittenberg, Department of Radiation Oncology, Halle (Saale) (Germany); Kotzsch, M. [Technical University Dresden, Department of Pathology, Dresden (Germany)

    2014-03-15

    Hypoxic radioresistance plays a critical role in the radiotherapy of cancer and adversely impacts prognosis and treatment response. This prospective study investigated the interrelationship and the prognostic significance of several hypoxia-related proteins in non-small cell lung cancer (NSCLC) patients treated by radiotherapy ± chemotherapy. Pretreatment osteopontin (OPN), vascular endothelial growth factor (VEGF) and carbonic anhydrase IX (CA IX) plasma levels were determined by ELISA in 55 NSCLC (M0) patients receiving 66 Gy curative-intent radiotherapy or chemoradiation. Marker correlation, association with clinicopathological parameters and the prognostic value of a biomarker combination was evaluated. All biomarkers were linearly correlated and linked to different clinical parameters including lung function, weight loss (OPN), gross tumor volume (VEGF) and T stage (CA IX). High OPN (p = 0.03), VEGF (p = 0.02) and CA IX (p = 0.04) values were significantly associated with poor survival. Double marker combination additively increased the risk of death by a factor of 2 and high plasma levels of the triple combination OPN/VEGF/CA IX yielded a 5.9-fold risk of death (p = 0.009). The combined assessment of OPN/VEGF/CA IX correlated independently with prognosis (p = 0.03) in a multivariate Cox regression model including N stage, T stage and GTV. This pilot study suggests that a co-detection augments the prognostic value of single markers and that the integration of OPN, VEGF and CA IX into a hypoxic biomarker profile for the identification of patients with largely hypoxic and radioresistant tumors should be further evaluated. (orig.) [German] Hypoxische Radioresistenz spielt eine kritische Rolle in der Radiotherapie maligner Tumoren und beeinflusst Prognose und Therapieansprechen negativ. Diese prospektive Studie untersuchte den Zusammenhang und die prognostische Bedeutung einiger hypoxieassoziierter Proteine bei Patienten mit nicht-kleinzelligem Bronchialkarzinom

  14. Interferon Alpha in Systemic Lupus Erythematosus

    Directory of Open Access Journals (Sweden)

    Timothy B. Niewold

    2010-01-01

    Full Text Available The pleiotropic cytokine interferon alpha is involved in multiple aspects of lupus etiology and pathogenesis. Interferon alpha is important under normal circumstances for antiviral responses and immune activation. However, heightened levels of serum interferon alpha and expression of interferon response genes are common in lupus patients. Lupus-associated autoantibodies can drive the production of interferon alpha and heightened levels of interferon interfere with immune regulation. Several genes in the pathways leading to interferon production or signaling are associated with risk for lupus. Clinical and cellular manifestations of excess interferon alpha in lupus combined with the genetic risk factors associated with interferon make this cytokine a rare bridge between genetic risk and phenotypic effects. Interferon alpha influences the clinical picture of lupus and may represent a therapeutic target. This paper provides an overview of the cellular, genetic, and clinical aspects of interferon alpha in lupus.

  15. Novel alpha-mannosidase inhibitors; Nye alfa-mannosidaseinhibitorer

    Energy Technology Data Exchange (ETDEWEB)

    Farr, R.A.; Kang, M.S.; Peet, N.P.; Sunkara, S.P.

    1997-05-20

    [4S-(4{alpha}, 4a{beta}, 6{alpha}, 7{alpha}, 7a{alpha})]-Octahydro-1H-1-pyridine-4,5,6,7-tetrols and [4R-(4{alpha}, 4a{alpha}, 5{alpha}, 6{beta}, 7{beta}, 7a{beta})]-octahydro-1H-1-pyridine-4,5,6,7-tetrols are useful inhibitors of alpha-mannosidase and are useful immunostimulants, chemoprotective and radioprotective agents and antimetastatic agents.

  16. Photosensitized reduction of water to hydrogen using human serum albumin complexed with zinc-protoporphyrin IX.

    Science.gov (United States)

    Komatsu, Teruyuki; Wang, Rong-Min; Zunszain, Patricia A; Curry, Stephen; Tsuchida, Eishun

    2006-12-20

    We present the photophysical properties of complexes of recombinant human serum albumin (rHSA) with Zn(II)-protoporphyrin IX (ZnPP) and their activities in the photosensitized reduction of water to hydrogen (H2) using methyl viologen (MV2+) as an electron relay. The ZnPP is bound in subdomain IB of wild-type rHSA [rHSA(wt] by an axial coordination of Tyr-161 and, in the rHSA(I142H/Y161L) mutant [rHSA(His], by a His-142 coordination. Both the rHSA(wt)-ZnPP and rHSA(His)-ZnPP complexes showed a long-lived photoexcited triplet state with lifetimes (tauT) of 11 and 2.5 ms, respectively. The accommodation of ZnPP into the protein matrix efficiently eliminated the collisional triplet self-quenching process. The addition of a water-soluble electron acceptor, MV2+, resulted in a significant decrease in the triplet lifetime. The transition absorption spectrum revealed the oxidative quenching of rHSA-3ZnPP* by MV2+. The quenching rate constant (kq) and backward electron transfer rate constant (kb) were determined to be 1.4 x 10(7) and 4.7 x 10(8) M(-1) s(-1) for rHSA(wt)-ZnPP. In the presence of the colloidal PVA-Pt as a catalyst and triethanolamine (TEOA) as a sacrificial electron donor, the photosensitized reduction of water to H2 takes place. The efficiency of the photoproduction of H2 was greater than that of the system using the well-known organic chromophore, tetrakis(1-methylpyridinium-4-yl)porphinatozinc(II) (ZnTMPyP4+), under the same conditions.

  17. [Rheumatoid arthritis among mapuche aborigines. A 16 years experience in the IX Region of the Chile].

    Science.gov (United States)

    Kaliski, S; Bustos, L; Artigas, C; Alarcón, C; Vega, M A; Cárdenas, C

    2001-03-01

    Mapuche, Chilean natives, represent approximately 9.8% of Chilean population and in the IX region of the country, they account for 18.4% of population over 15 years old. They preserve some socio-cultural characteristics that make them different to the rest of the population. To describe the epidemiological characteristics rheumatoid arthritis among Mapuche natives. Retrospective review of patients of Mapuche origin with rheumatoid arthritis, seen at Temuco Hospital between 1980 and 1996. Among 308 cases gathered, only 106 (93 women, aged 55 +/- 10 years old) complied with 1987 American College of Rheumatology (ACR) criteria for rheumatoid arthritis. The disease began between 29 and 52 years old in 73% of patients and the mean delay in diagnosis was 4.4 years. At diagnosis, 99% had symmetric poliarthritis, 28.3% had either fatigue, fever or weight loss, and 46.9% were in class III or in class IV of ACR-1991. Fifty three percent of patients developed Sicca syndrome, 36% developed nodules, 23% developed Raynaud phenomenon, 11% developed pulmonary involvement, 7% developed vasculitis, 5% developed neurological manifestations and 19% developed ophthalmologic involvement. Rheumatoid factor was positive in 78% and 73% had erosions. HLA DR4 was (+) in 60% of 30 patients. Thirty percent required 3 or more disease modifying drugs and prednisone over 10 mg/day. There was no correlation between functional capacity and several other features of the disease. Mapuche rheumatoid arthritis patients are detected late and have a poor functional capacity at the time of diagnosis. They also have a higher proportion of extraarticular manifestations, more erosions and require more aggressive treatments.

  18. The X-ray Emitting OB Population of MYStIX Star-Forming Regions

    Science.gov (United States)

    Busk, Heather

    Despite the large influence of massive stars on their environments, they remain incompletely catalogued. High extinction, diffuse emission, and contamination by foreground and background stars hinder the improvement of the census within massive star forming regions. These difficulties are alleviated by restricting the search to only stars with detectable X-ray emission, and by using infrared photometry. OB stars are distinguished from young stellar objects by fitting the photometry to stellar atmosphere models incorporating extinction. The results are a list of candidate OB stars with inferred extinctions and spectral types, in each of eighteen regions studied in the Massive Young Stellar Complexes in the Infrared and X-ray (MYStIX) project. If correct, these results increase the population of stars of spectral types B1 and earlier by 28% over all the observed regions, with varying percentages of new candidates in each region. Notable results include: the identification of the OB population of a recently discovered third cluster in NGC 6357; the possible identification of a new massive cluster near the Trifid Nebula; the potential identification of some of the influential stars and an increase of 175% of the OB population in NGC 6334; a lack of candidates in the Flame Nebula; a doubling of the OB population in RCW 38, and an increase of 80% in NGC 3576; as well as a number of O candidates, with some potentially as early as O3. Finally, W4 has an overabundance of massive stars for its X-ray emitting population. We also compare to observed spectral types for the candidates in M17 obtained by C. Kobulnicky (private communication), and find that if the proportion holds true for other regions, roughly 67% of the candidates are correctly identified as massive, so that the overall increase of the OB population is 19%.

  19. Torino 2006. XX Olympic and IX Paralympic Winter Games: the ENT experience.

    Science.gov (United States)

    Succo, G; Crosetti, E; Mattiazzo, A; Riontino, E; Massazza, G

    2008-06-01

    A total of 27 competition days, more than 3000 athletes, over 10,000 components of the Olympic family, 3,500 workers, 2,500 volunteers, an overall business of more than 2 billion Euros. These, in a nutshell, are just a few of the data concerning the XX Olympic and the IX Paralympic Winter Games, Torino, Italy, 2006. Such a huge event, obviously required a meticulously organized medical service to cope with the healthcare of the athletes, official workers and the Olympic family, distributed over a geographic area of approximately 80 km in diameter. An ENT service was organized within the medical service, which was divided between 3 Polyclinics, in which 12 ENT Specialists were on duty. The present report gives an account of the final data concerning the service involved, together with a description of the approach used in the actual organization, with a view to providing useful information for colleagues who will be called upon, for a similar service, in future Olympic Winter Games. The ENT healthcare offered was confirmed to be proportional to the requirements, both from a qualitative and quantitative point of view. All the ENT specialists involved, reported having gained an immense store of human experience from having lived the Olympic atmosphere as a volunteer exerting one's own profession. The facilities available in the Polyclinics, which were at a considerable distance from the Hospital, were found to be more than adequate with respect to the pathological conditions and service requested, particularly in 17% of the cases which would otherwise have been sent to a Hospital Outpatient Unit at least 80 km away.

  20. Riemerella anatipestifer Type IX Secretion System Is Required for Virulence and Gelatinase Secretion

    Directory of Open Access Journals (Sweden)

    Yunqing Guo

    2017-12-01

    Full Text Available Riemerella anatipestifer (RA, a major causative agent of septicemia anserum exsudativa in domesticated ducklings, has a protein secretion system known as the type IX secretion system (T9SS. It is unknown whether the T9SS contributes to the virulence of RA through secretion of factors associated with pathogenesis. To answer this question, we constructed an RA mutant deficient in sprT, which encodes a core protein of the T9SS. Deletion of sprT yielded cells that failed to digest gelatin, an effect that was rescued via complementation by a plasmid encoding wild-type sprT. Complement-mediated killing was significantly increased in the deletion mutant, suggesting that proteins secreted by the T9SS are necessary for complement evasion in RA. Liquid chromatography-tandem mass spectrometry analysis revealed that RAYM_01812 and RAYM_04099 proteins containing a subtilisin-like serine protease domain and exhibiting extracellular gelatinase activity were secreted by the T9SS. Animal experiments demonstrated that the virulence of mutant strain ΔsprT strain was attenuated by 42,000-fold relative to wild-type RA-YM. Immunization with the ΔsprT protected ducks from challenge with RA-YM, suggesting that the former can be used as a live attenuated vaccine. These results indicate that the T9SS is functional in RA and contributes to its virulence by exporting key proteins. In addition, subtilisin-like serine proteases which are important virulence factors that interact with complement proteins may enable RA to evade immune surveillance in the avian innate immune system.

  1. Carbonic Anhydrase IX is Not a Predictor of Outcomes in Non-Metastatic Clear Cell Renal Cell Carcinoma - A Digital Analysis of Tissue Microarray

    Directory of Open Access Journals (Sweden)

    Marcelo Zerati

    2013-07-01

    Full Text Available Introduction The knowledge about the molecular biology of clear cell renal cell carcinoma (ccRCC is evolving, and Carbonic Anhydrase type IX (CA-IX has emerged as a potential prognostic marker in this challenging disease. However, most of the literature about CA-IX on ccRCC comes from series on metastatic cancer, with a lack of series on non-metastatic cancer. The objective is to evaluate the expression of CA-IX in a cohort of non-metastatic ccRCC, correlating with 1 overall survival, and 2 with established prognostic parameters (T stage, tumor size, Fuhrman nuclear grade, microvascular invasion and peri-renal fat invasion. Materials and Methods This is a retrospective cohort study. We evaluated 95 patients with non-metastatic clear cell renal cell carcinoma, as to the expression of CA-IX. The analyzed parameters where: overall survival (OS, TNM stage, tumor size (TS, Fuhrman nuclear grade (FNG, microvascular invasion (MVI, peri-renal fat invasion (PFI. We utilized a custom built tissue microarray, and the immunoexpression was digitally quantified using the Photoshop® software. Results: Th e mean follow-up time was 7.9 years (range 1.9 to 19.5 years. The analysis of CA-IX expression against the selected prognostic parameters showed no correlation. The results are as follows: Overall survival (p = 0.790; T stage (p = 0.179; tumor size (p = 0.143; grouped Fuhrman nuclear grade (p = 0.598; microvascular invasion (p = 0.685, and peri-renal fat invasion (p = 0.104. Conclusion Carbonic anhydrase type IX expression does not correlate with overall survival and conventional prognostic parameters in non-metastatic clear cell renal cell carcinoma.

  2. Results of a phase I/II open-label, safety and efficacy trial of coagulation factor IX (recombinant), albumin fusion protein in haemophilia B patients.

    Science.gov (United States)

    Martinowitz, U; Lissitchkov, T; Lubetsky, A; Jotov, G; Barazani-Brutman, T; Voigt, C; Jacobs, I; Wuerfel, T; Santagostino, E

    2015-11-01

    rIX-FP is a coagulation factor IX (recombinant), albumin fusion protein with more than fivefold half-life prolongation over other standard factor IX (FIX) products available on the market. This prospective phase II, open-label study evaluated the safety and efficacy of rIX-FP for the prevention of bleeding episodes during weekly prophylaxis and assessed the haemostatic efficacy for on-demand treatment of bleeding episodes in previously treated patients with haemophilia B. The study consisted of a 10-14 day evaluation of rIX-FP pharmacokinetics (PK), and an 11 month safety and efficacy evaluation period with subjects receiving weekly prophylaxis treatment. Safety was evaluated by the occurrence of related adverse events, and immunogenic events, including development of inhibitors. Efficacy was evaluated by annualized spontaneous bleeding rate (AsBR), and the number of injections to achieve haemostasis. Seventeen subjects participated in the study, 13 received weekly prophylaxis and 4 received episodic treatment only. No inhibitors were detected in any subject. The mean and median AsBR were 1.25, and 1.13 respectively in the weekly prophylaxis arm. All bleeding episodes were treated with 1 or 2 injections of rIX-FP. Three prophylaxis subjects who were treated on demand prior to study entry had >85% reduction in AsBR compared to the bleeding rate prior to study entry. This study demonstrated the efficacy for weekly routine prophylaxis of rIX-FP to prevent spontaneous bleeding episodes and for the treatment of bleeding episodes. In addition no safety issues were detected during the study and an improved PK profile was demonstrated. © 2015 CSL Behring. Haemophilia published by John Wiley & Sons Ltd.

  3. Different Duck Species Infected Intramuscularly with Duck-Origin Genotype IX APMV-1 Show Discrepant Mortality and Indicate Another Fatal Genotype APMV-1 to Ducks.

    Science.gov (United States)

    Fu, Guanghua; Cheng, Longfei; Fu, Qiuling; Qi, Baomin; Chen, Cuiteng; Shi, Shaohua; Chen, Hongmei; Wan, Chunhe; Liu, Rongchang; Huang, Yu

    2017-03-01

    Isolations of genotype IX (gIX) avian paramyxovirus type 1 (APMV-1) from various bird species have been more common recently, with isolates showing variable pathogenicity in different species of poultry. Here we sequenced the genome of a Muscovy duck origin gIX virus strain XBT14 and characterized the virulence and pathogenicity of this isolate in chickens and ducks. The genome sequence of strain XBT14 is 15,192 nt in length, containing multiple basic amino acids at the fusion protein cleavage site. The XBT14 strain shared 91.6%-91.9% nucleotide identities with early-genotype viruses (such as genotype III and IV) and shared 85.3%-85.9% nucleotide homologies with later genotype viruses (such as genotype VII). Pathogenicity tests showed that strain XBT14 could cause death in different duck breeds with a mortality rate of 44.4% in Muscovy duck, 25.9% in Sheldrake, and 11.1% in Cherry Valley duck, respectively. Similar mortality discrepancies were also observed in different ducks when infected with chicken-origin gIX virus strain F48E8. These results indicate that XBT14-like velogenic gIX APMV-1 (such as XBT14, F48E8, and GD09-2) could cause fatal infection in duck, and genotype IX is another genotype velogenic to duck as well as genotype VII. Accompanied by genetic differences in the vaccine strains or dominant strains prevailing in poultry, the virulent XBT14-like gIX viruses might become potentially endemic strains in poultry in the future.

  4. Caractérisation d’inhibiteurs d’anhydrase carbonique IX, études de complexes supramoléculaires et interactions moléculaires par résonance plasmonique de surface

    OpenAIRE

    Florent, Tiphaine

    2014-01-01

    Carbonic anhydrase (CA) IX expression is increased upon hypoxia and has been proposed as a therapeutic target since it has been associated with poor prognosis, tumor progression and pH regulation. A new class of human carbonic anhydrase IX (hCA IX) inhibitors, diarylpyrazole sulfonamide derivatives, has been synthesized in our team. These compounds have a very limited water solubility which limits their pharmaceutical development. The complexation with cyclodextrins (CDs) offers the possibili...

  5. Estado de la investigacion en enfermería IX región de la Araucania, Temuco, Chile 2002 State of the research in nursing IX th region of the Araucania, Temuco, Chile 2002

    Directory of Open Access Journals (Sweden)

    Edith Elina Rivas Riveros

    2005-09-01

    Full Text Available El desarrollo de la investigación nos proyecta en la imagen de enfermera(o que queremos para el siglo XXI y el posicionamiento que tendremos. Esta imagen debe caracterizarse por intervenciones que demuestren calidad científica y humanización del cuidado. Las prácticas del cuidado, si bien son concebidas como una actividad práctica, necesitan de la actividad intelectual y de una masa crítica de investigadores e ideólogos que orienten las acciones, situación que debe fundamentarse en la evidencia. El propósito de esta investigación fue identificar, por medio de un estudio descriptivo, exploratorio y correlacional, el estado de la investigación en enfermería en la IX Región de la Araucania, Chile. Los objetivos específicos fueron analizar las condiciones en que se desarrolló el perfeccionamiento de las enfermeras en la IX Región y contribuir a la identificación de las líneas de investigación. El estudio recoge las características de los postgrados en enfermería en la IX Región, Chile: licenciatura, magíster y doctorado hasta el año 2002. Se concluye que en materia de enfoques predomina el positivista; las enfermeras están motivadas a perfeccionarse en programas de postgrado fundamen-talmente por razones de desarrollo personal y el deseo de contribuir a mejorar la profesión; quienes realizan estudios de postgrado se desempeñan en docencia en institutos y universidades, y la temática de las in-vestigaciones está básicamente orientada hacia la enseñanza de enfermería.The development of the investigation projected us in nurse’s image that we want for the XXI Century and the positioning that we will have. This image will be characterized by interventions that demonstrate scientific quality and humanization of the care. The practices of the care, although they are conceived as a practical activity, they need of the intellectual activity and of a critical mass of investigators and ideologists that guide the actions

  6. Activator protein 2alpha mediates parathyroid TGF-alpha self-induction in secondary hyperparathyroidism.

    Science.gov (United States)

    Arcidiacono, Maria Vittoria; Cozzolino, Mario; Spiegel, Noah; Tokumoto, Masanori; Yang, Jing; Lu, Yan; Sato, Tetsuhiko; Lomonte, Carlo; Basile, Carlo; Slatopolsky, Eduardo; Dusso, Adriana S

    2008-10-01

    In secondary hyperparathyroidism, enhanced expression of TGF-alpha in the parathyroid leads to its own upregulation, generating a feed-forward loop for TGF-alpha activation of its receptor, EGFR receptor (EGFR), which promotes parathyroid hyperplasia. These studies examined the role of activator protein 2alpha (AP2), an inducer of TGF-alpha gene transcription, in the upregulation of parathyroid TGF-alpha in secondary hyperparathyroidism. In rat and human secondary hyperparathyroidism, parathyroid AP2 expression strongly correlated with TGF-alpha levels and with the rate of parathyroid growth, as expected. Furthermore, the increases in rat parathyroid content of AP2 and its binding to a consensus AP2 DNA sequence preceded the increase in TGF-alpha induced by high dietary phosphate. More significant, in A431 cells, which provide a model of enhanced TGF-alpha and TGF-alpha self-induction, mutating the core AP2 site of the human TGF-alpha promoter markedly impaired promoter activity induced by endogenous or exogenous TGF-alpha. Important for therapy, in five-sixths nephrectomized rats fed high-phosphate diets, inhibition of parathyroid TGF-alpha self-induction using erlotinib, a highly specific inhibitor of TGF-alpha/EGFR-driven signals, reduced AP2 expression dosage dependently. This suggests that the increases in parathyroid AP2 occur downstream of EGFR activation by TGF-alpha and are required for TGF-alpha self-induction. Indeed, in A431 cells, erlotinib inhibition of TGF-alpha self-induction caused parallel reductions in AP2 expression and nuclear localization, as well as TGF-alpha mRNA and protein levels. In summary, increased AP2 expression and transcriptional activity at the TGF-alpha promoter determine the severity of the hyperplasia driven by parathyroid TGF-alpha self-upregulation in secondary hyperparathyroidism.

  7. Settlement, territory and notarial formulas: a verification (Verona, IX-XII century Insediamento, territorio e formule notarili: una verifica (Verona, IX-XII secolo

    Directory of Open Access Journals (Sweden)

    Andrea Brugnoli

    2011-10-01

    well as synchronous – allows instead to highlight their links with the different practices in the territory: not only through the presence of landlordship, but also the structure of habitat, the forms of solidarity and the access to common resources.

     

    L’organizzazione del territorio rurale nel medioevo e la sua conoscibilità attraverso le tecniche ubicatorie utilizzate dai notai costitiscono un tema classico nella storiografia italiana della seconda metà del Novecento. La documentazione prodotta nel territorio veronese ben si presta per una verifica delle ipotesi e la formulazione di alcune linee guida per l’interpretazione delle formule notarili per quanto attiene all’insediamento e alla territorialità di villaggio. Il numero di documenti prodotti e conservati nel Veronese per i secoli IX-XII, e la loro omogeneità quanto a istituzioni che ce li hanno conservati e tramandati, permette di affrontare una complessa analisi che deve considerare diverse variabili. Sul piano documentario si tratta di possibili varietà, al limite dell’individualità, di formulari e di usi notarili; a queste si uniscono differenze geografiche, di assetti proprietari, dello sviluppo di presenze signorili e di pratiche agrarie, oltre che di popolamento che caratterizzano questo territorio. In particolare la varietà del quadro geografico, equamente suddiviso tra una fascia collinare di non disprezzabile estensione, una fascia di pianura asciutta e irrigua e una di bassa pianura soggetta a esondazioni si prospettava come un elemento positivo per identificare i diversi fattori attivi nella costruzione dell’insediamento rurale, la sua organizzazione e rappresentazione. Il presupposto di partenza è che le formule ubicatorie siano articolate in schemi frutto di una dialettica tra cultura notarile da un lato e percezione dell’organizzazione dello spazio dall’altro; quest’ultima a sua volta risultato del rapporto che si instaura tra le comunità umane e il

  8. Alpha particle studies during JET DT experiments

    International Nuclear Information System (INIS)

    1999-01-01

    The 1997 DT experiment (DTE1) at the Joint European Torus included studies of the behaviour of alpha particles in high temperature plasmas. Clear alpha particle heating was observed in a series of otherwise similar 10MW hot-ion H-modes by scanning the DT mixture from 0%T to 93%T. Maxima in central temperature and energy content were obtained which corresponded with the maximum in fusion yield. Alfven Eigenmodes (AEs) have been detected in JET, driven by NBI or ICRH fast ions. However, in agreement with theory, no AE activity was observed in DT plasmas which could be attributed to alpha particle drive, except in the afterglow of some Optimised Shear pulses. Ion Cyclotron Emission (ICE) was detected at harmonics of the alpha particle cyclotron frequency at the outer edge of the plasma. The ICE is interpreted as being close to magnetoacoustic cyclotron instability, driven by inverted alpha distributions at the plasma edge. The high-energy neutral particle spectra showed features, which are ascribed to a mixture of alphas, neutralised by helium-like impurities, and deuterons, born from elastic collisions with alpha particles and neutralised by hydrogen-like impurities. The results of all these studies are consistent with classical alpha particle trapping and slowing-down. Future DT experiments will aim to increase alpha particle pressure, so interactions with plasma instabilities can be studied. The measurement of knock-on neutral triton spectra offers a clean way to determine confined alpha densities in these future experiments. (author)

  9. Alpha particle studies during JET DT experiments

    International Nuclear Information System (INIS)

    2001-01-01

    The 1997 DT experiment (DTE1) at the Joint European Torus included studies of the behaviour of alpha particles in high temperature plasmas. Clear alpha particle heating was observed in a series of otherwise similar 10MW hot-ion H-modes by scanning the DT mixture from 0%T to 93%T. Maxima in central temperature and energy content were obtained which corresponded with the maximum in fusion yield. Alfven Eigenmodes (AEs) have been detected in JET, driven by NBI or ICRH fast ions. However, in agreement with theory, no AE activity was observed in DT plasmas which could be attributed to alpha particle drive, except in the afterglow of some Optimised Shear pulses. Ion Cyclotron Emission (ICE) was detected at harmonics of the alpha particle cyclotron frequency at the outer edge of the plasma. The ICE is interpreted as being close to magnetoacoustic cyclotron instability, driven by inverted alpha distributions at the plasma edge. The high-energy neutral particle spectra showed features, which are ascribed to a mixture of alphas, neutralised by helium-like impurities, and deuterons, born from elastic collisions with alpha particles and neutralised by hydrogen-like impurities. The results of all these studies are consistent with classical alpha particle trapping and slowing-down. Future DT experiments will aim to increase alpha particle pressure, so interactions with plasma instabilities can be studied. The measurement of knock-on neutral triton spectra offers a clean way to determine confined alpha densities in these future experiments. (author)

  10. The Alpha Magnetic Spectrometer (AMS)

    CERN Document Server

    Alcaraz, J; Ambrosi, G; Anderhub, H; Ao, L; Arefev, A; Azzarello, P; Babucci, E; Baldini, L; Basile, M; Barancourt, D; Barão, F; Barbier, G; Barreira, G; Battiston, R; Becker, R; Becker, U; Bellagamba, L; Bene, P; Berdugo, J; Berges, P; Bertucci, B; Biland, A; Bizzaglia, S; Blasko, S; Bölla, G; Boschini, M; Bourquin, Maurice; Brocco, L; Bruni, G; Buénerd, M; Burger, J D; Burger, W J; Cai, X D; Camps, C; Cannarsa, P; Capell, M; Casadei, D; Casaus, J; Castellini, G; Cecchi, C; Chang, Y H; Chen, H F; Chen, H S; Chen, Z G; Chernoplekov, N A; Tzi Hong Chiueh; Chuang, Y L; Cindolo, F; Commichau, V; Contin, A; Crespo, P; Cristinziani, M; Cunha, J P D; Dai, T S; Deus, J D; Dinu, N; Djambazov, L; Dantone, I; Dong, Z R; Emonet, P; Engelberg, J; Eppling, F J; Eronen, T; Esposito, G; Extermann, P; Favier, Jean; Fiandrini, E; Fisher, P H; Flügge, G; Fouque, N; Galaktionov, Yu; Gervasi, M; Giusti, P; Grandi, D; Grimm, O; Gu, W Q; Hangarter, K; Hasan, A; Hermel, V; Hofer, H; Huang, M A; Hungerford, W; Ionica, M; Ionica, R; Jongmanns, M; Karlamaa, K; Karpinski, W; Kenney, G; Kenny, J; Kim, W; Klimentov, A; Kossakowski, R; Koutsenko, V F; Kraeber, M; Laborie, G; Laitinen, T; Lamanna, G; Laurenti, G; Lebedev, A; Lee, S C; Levi, G; Levchenko, P M; Liu, C L; Liu, H T; Lopes, I; Lu, G; Lü, Y S; Lübelsmeyer, K; Luckey, D; Lustermann, W; Maña, C; Margotti, A; Mayet, F; McNeil, R R; Meillon, B; Menichelli, M; Mihul, A; Mourao, A; Mujunen, A; Palmonari, F; Papi, A; Park, I H; Pauluzzi, M; Pauss, Felicitas; Perrin, E; Pesci, A; Pevsner, A; Pimenta, M; Plyaskin, V; Pozhidaev, V; Postolache, V; Produit, N; Rancoita, P G; Rapin, D; Raupach, F; Ren, D; Ren, Z; Ribordy, M; Richeux, J P; Riihonen, E; Ritakari, J; Röser, U; Roissin, C; Sagdeev, R; Sartorelli, G; Schwering, G; Scolieri, G; Seo, E S; Shoutko, V; Shoumilov, E; Siedling, R; Son, D; Song, T; Steuer, M; Sun, G S; Suter, H; Tang, X W; Ting, Samuel C C; Ting, S M; Tornikoski, M; Torsti, J; Ulbricht, J; Urpo, S; Usoskin, I; Valtonen, E; Vandenhirtz, J; Velcea, F; Velikhov, E P; Verlaat, B; Vetlitskii, I; Vezzu, F; Vialle, J P; Viertel, Gert M; Vitè, Davide F; Gunten, H V; Wallraff, W; Wang, B C; Wang, J Z; Wang, Y H; Wiik, K; Williams, C; Wu, S X; Xia, P C; Yan, J L; Yan, L G; Yang, C G; Yang, M; Ye, S W; Yeh, P; Xu, Z Z; Zhang, H Y; Zhang, Z P; Zhao, D X; Zhu, G Y; Zhu, W Z; Zhuang, H L; Zichichi, A; Zimmermann, B

    2002-01-01

    The Alpha Magnetic Spectrometer (AMS) is a large acceptance (0.65 sr m sup 2) detector designed to operate in the International Space Station (ISS) for three years. The purposes of the experiment are to search for cosmic antimatter and dark matter and to study the composition and energy spectrum of the primary cosmic rays. A 'scaled-down' version has been flown on the Space Shuttle Discovery for 10 days in June 1998. The complete AMS is programmed for installation on the ISS in October 2003 for an operational period of 3 yr. This contribution reports on the experimental configuration that will be installed on the ISS.

  11. Targeted alpha therapy for cancer

    Energy Technology Data Exchange (ETDEWEB)

    Allen, Barry J [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Raja, Chand [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Rizvi, Syed [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Li Yong [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Tsui, Wendy [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Zhang, David [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Song, Emma [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Qu, C F [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Kearsley, John [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Graham, Peter [Centre for Experimental Radiation Oncology, St George Cancer Care Centre, Gray St, Kogarah 2217, NSW (Australia); Thompson, John [Sydney Melanoma Unit, Royal Prince Alfred Hospital, Camperdown 2050 NSW (Australia)

    2004-08-21

    Targeted alpha therapy (TAT) offers the potential to inhibit the growth of micrometastases by selectively killing isolated and preangiogenic clusters of cancer cells. The practicality and efficacy of TAT is tested by in vitro and in vivo studies in melanoma, leukaemia, colorectal, breast and prostate cancers, and by a phase 1 trial of intralesional TAT for melanoma. The alpha-emitting radioisotope used is Bi-213, which is eluted from the Ac-225 generator and chelated to a cancer specific monoclonal antibody (mab) or protein (e.g. plasminogen activator inhibitor-2 PAI2) to form the alpha-conjugate (AC). Stable alpha-ACs have been produced which have been tested for specificity and cytotoxicity in vitro against melanoma (9.2.27 mab), leukaemia (WM60), colorectal (C30.6), breast (PAI2, herceptin), ovarian (PAI2, herceptin, C595), prostate (PAI2, J591) and pancreatic (PAI2, C595) cancers. Subcutaneous inoculation of 1-1.5 million human cancer cells into the flanks of nude mice causes tumours to grow in all mice. Tumour growth is compared for untreated controls, nonspecific AC and specific AC, for local (subcutaneous) and systemic (tail vein or intraperitoneal) injection models. The {sup 213}Bi-9.2.27 AC is injected into secondary skin melanomas in stage 4 patients in a dose escalation study to determine the effective tolerance dose, and to measure kinematics to obtain the equivalent dose to organs. In vitro studies show that TAT is one to two orders of magnitude more cytotoxic to targeted cells than non-specific ACs, specific beta emitting conjugates or free isotopes. In vivo local TAT at 2 days post-inoculation completely prevents tumour formation for all cancers tested so far. Intra-lesional TAT can completely regress advanced sc melanoma but is less successful for breast and prostate cancers. Systemic TAT inhibits the growth of sc melanoma xenografts and gives almost complete control of breast and prostate cancer tumour growth. Intralesional doses up to 450 {mu

  12. The Alpha Magnetic Spectrometer (ams)

    Science.gov (United States)

    Ionica, Maria

    2004-01-01

    The Alpha Magnetic Spectrometer (AMS), once installed on the International Space Station will provide precise measurements of the cosmic ray spectra up to TeV energy range, and will search for cosmological antimatter and missing matter. A prototype version of the detector was operated successfully on the space shuttle Discovery in June 1998 (STS-91). Here we briefly report on the design of the AMS apparatus and present the results of the measurements of the fluxes of proton, electron, positron and helium from the STS-91 flight.

  13. Crossing symmetry in Alpha space

    CERN Multimedia

    CERN. Geneva

    2017-01-01

    The conformal bootstrap program aims to catalog all conformal field theories (second-order phase transitions) in D dimensions. Despite its ambitious scope much progress has been made over the past decade, e.g. in computing critical exponents for the 3D O(N) models to high precision. At this stage, analytic methods to explore the CFT landscape are not as well developed. In this talk I will describe a new mathematical framework for the bootstrap known as "alpha space", which reduces crossing symmetry to a set of integral equations. Based on arXiv:1702.08471 (with Balt van Rees) and arXiv:1703.08159.

  14. The Alpha Magnetic Spectrometer (AMS)

    International Nuclear Information System (INIS)

    Alcaraz, J.; Alpat, B.; Ambrosi, G.; Anderhub, H.; Ao, L.; Arefiev, A.; Azzarello, P.; Babucci, E.; Baldini, L.; Basile, M.; Barancourt, D.; Barao, F.; Barbier, G.; Barreira, G.; Battiston, R.; Becker, R.; Becker, U.; Bellagamba, L.; Bene, P.; Berdugo, J.; Berges, P.; Bertucci, B.; Biland, A.; Bizzaglia, S.; Blasko, S.; Boella, G.; Boschini, M.; Bourquin, M.; Brocco, L.; Bruni, G.; Buenerd, M.; Burger, J.D.; Burger, W.J.; Cai, X.D.; Camps, C.; Cannarsa, P.; Capell, M.; Casadei, D.; Casaus, J.; Castellini, G.; Cecchi, C.; Chang, Y.H.; Chen, H.F.; Chen, H.S.; Chen, Z.G.; Chernoplekov, N.A.; Chiueh, T.H.; Chuang, Y.L.; Cindolo, F.; Commichau, V.; Contin, A.; Crespo, P.; Cristinziani, M.; Cunha, J.P. da; Dai, T.S.; Deus, J.D.; Dinu, N.; Djambazov, L.; DAntone, I.; Dong, Z.R.; Emonet, P.; Engelberg, J.; Eppling, F.J.; Eronen, T.; Esposito, G.; Extermann, P.; Favier, J.; Fiandrini, E.; Fisher, P.H.; Fluegge, G.; Fouque, N.; Galaktionov, Yu.; Gervasi, M.; Giusti, P.; Grandi, D.; Grimm, O.; Gu, W.Q.; Hangarter, K.; Hasan, A.; Hermel, V.; Hofer, H.; Huang, M.A.; Hungerford, W.; Ionica, M.; Ionica, R.; Jongmanns, M.; Karlamaa, K.; Karpinski, W.; Kenney, G.; Kenny, J.; Kim, W.; Klimentov, A.; Kossakowski, R.; Koutsenko, V.; Kraeber, M.; Laborie, G.; Laitinen, T.; Lamanna, G.; Laurenti, G.; Lebedev, A.; Lee, S.C.; Levi, G.; Levtchenko, P.; Liu, C.L.; Liu, H.T.; Lopes, I.; Lu, G.; Lu, Y.S.; Luebelsmeyer, K.; Luckey, D.; Lustermann, W.; Mana, C.; Margotti, A.; Mayet, F.; McNeil, R.R.; Meillon, B.; Menichelli, M.; Mihul, A.; Mourao, A.; Mujunen, A.; Palmonari, F.; Papi, A.; Park, I.H.; Pauluzzi, M.; Pauss, F.; Perrin, E.; Pesci, A.; Pevsner, A.; Pimenta, M.; Plyaskin, V.; Pojidaev, V.; Postolache, V.; Produit, N.; Rancoita, P.G.; Rapin, D.; Raupach, F.; Ren, D.; Ren, Z.; Ribordy, M.; Richeux, J.P.; Riihonen, E.; Ritakari, J.; Roeser, U.; Roissin, C.; Sagdeev, R.; Sartorelli, G.; Schultz von Dratzig, A.; Schwering, G.; Scolieri, G.; Seo, E.S.; Shoutko, V.; Shoumilov, E.; Siedling, R.; Son, D.; Song, T.; Steuer, M.; Sun, G.S.; Suter, H.; Tang, X.W.; Ting, S.C.C.Samuel C.C.; Ting, S.M.; Tornikoski, M.; Torsti, J.; Tr umper, J.; Ulbricht, J.; Urpo, S.; Usoskin, I.; Valtonen, E.; Vandenhirtz, J.; Velcea, F.; Velikhov, E.; Verlaat, B.; Vetlitsky, I.; Vezzu, F.; Vialle, J.P.; Viertel, G.; Vite, D.; Gunten, H. Von; Wicki, S.W.S. Waldmeier; Wallraff, W.; Wang, B.C.; Wang, J.Z.; Wang, Y.H.; Wiik, K.; Williams, C.; Wu, S.X.; Xia, P.C.; Yan, J.L.; Yan, L.G.; Yang, C.G.; Yang, M.; Ye, S.W.; Yeh, P.; Xu, Z.Z.; Zhang, H.Y.; Zhang, Z.P.; Zhao, D.X.; Zhu, G.Y.; Zhu, W.Z.; Zhuang, H.L.; Zichichi, A.; Zimmermann, B.

    2002-01-01

    The Alpha Magnetic Spectrometer (AMS) is a large acceptance (0.65 sr m 2 ) detector designed to operate in the International Space Station (ISS) for three years. The purposes of the experiment are to search for cosmic antimatter and dark matter and to study the composition and energy spectrum of the primary cosmic rays. A 'scaled-down' version has been flown on the Space Shuttle Discovery for 10 days in June 1998. The complete AMS is programmed for installation on the ISS in October 2003 for an operational period of 3 yr. This contribution reports on the experimental configuration that will be installed on the ISS

  15. Comparison of aminolevulinic acid and hexylester aminolevulinate induced protoporphyrin IX fluorescence for the detection of ovarian carcinoma metastases: an experimental study

    Science.gov (United States)

    Ascencio, Manuel; Regis, Claudia; Mordon, Serge; Collinet, Pierre

    2009-06-01

    The present study aimed at comparing the photo detection of peritoneal micrometastases in an ovarian cancer model following administration of two precursors of protoporphyrin IX (PpIX): aminolevulinic acid (ALA) and hexylester aminolevulinate (He-ALA). ALA or He-ALA (100mg/kg) was injected in the peritoneum cavity of 16 rats with induced peritoneal metastases of ovarian cancer. Two hours later, the tumours were visualized laparoscopically using both white light for standard exploration and blue light for fluorescence (D-light, Karl Storz, Tuttlingen, Germany). Peritoneal micrometastases were counted. The distribution of PpIX through the peritoneum was studied on frozen biopsies using fluorescence microscopy and correlated with pathological findings. The number of micrometastases detected by the fluorescence blue mode was significantly higher (p<0.05) than with standard white light for both ALA (235 versus 198) and He-ALA application (248 versus 199). The mean fluorescence intensity ratio between tumor and normal surrounding tissue was significantly (p< 0.05) higher for He-ALA (1.6+/-0.1) compared to ALA (1.4+/-0.1). Fluorescence microscopy confirmed that the fluorescence remained limited to cancer cells. Macroscopically fluorescing nodules were histopathology confirmed as malignant. In conclusion, He-ALA is an excellent precursor for PpIX synthesis giving the highest PpIX fluorescence contrast between normal and tumoral peritoneum. Imaging with He-ALA improves the detection of peritoneal metastases comparing to ALA.

  16. Physiological levels of blood coagulation factors IX and X control coagulation kinetics in an in vitro model of circulating tissue factor

    International Nuclear Information System (INIS)

    Tormoen, Garth W; Khader, Ayesha; Gruber, András; McCarty, Owen J T

    2013-01-01

    Thrombosis significantly contributes to cancer morbidity and mortality. The mechanism behind thrombosis in cancer may be circulating tissue factor (TF), as levels of circulating TF are associated with thrombosis. However, circulating TF antigen level alone has failed to predict thrombosis in patients with cancer. We hypothesize that coagulation factor levels regulate the kinetics of circulating TF-induced thrombosis. Coagulation kinetics were measured as a function of individual coagulation factor levels and TF particle concentration. Clotting times increased when pooled plasma was mixed at or above a ratio of 4:6 with PBS. Clotting times increased when pooled plasma was mixed at or above a ratio of 8:2 with factor VII-depleted plasma, 7:3 with factor IX- or factor X-depleted plasmas, or 2:8 with factor II-, V- or VIII-depleted plasmas. Addition of coagulation factors VII, X, IX, V and II to depleted plasmas shortened clotting and enzyme initiation times, and increased enzyme generation rates in a concentration-dependent manner. Only additions of factors IX and X from low-normal to high-normal levels shortened clotting times and increased enzyme generation rates. Our results demonstrate that coagulation kinetics for TF particles are controlled by factor IX and X levels within the normal physiological range. We hypothesize that individual patient factor IX and X levels may be prognostic for susceptibility to circulating TF-induced thrombosis. (paper)

  17. Seleucid, Demotic and Mediterranean mathematics versus Chapters VIII and IX of the Nine Chapters: accidental or significant similarities?

    DEFF Research Database (Denmark)

    Høyrup, Jens

    Similarities of geometrical diagrams and arithmetical structures of problems have often been taken as evidence of transmission of mathematical knowledge or techniques between China and “the West”. Confronting on one hand some problems from Chapter VIII of the Nine Chapters with comparable problems...... known from Ancient Greek sources, on the other a Seleucid collection of problems about rectangles with a subset of the triangle problems from Chapter IX, it is concluded, (1) that transmission of some arithmetical riddles without method – not “from Greece” but from a transnational community of traders...

  18. Zinc protoporphyrin-IX stimulates tumor immunity by disrupting the immunosuppressive enzyme indoleamine 2,3-dioxygenase

    OpenAIRE

    Metz, Richard; DuHadaway, James B.; Rust, Sonja; Munn, David H.; Muller, Alexander J.; Mautino, Mario; Prendergast, George C.

    2010-01-01

    The tryptophan catabolic enzyme indoleamine 2,3-dioxygenase (IDO) has emerged as an important driver of immune escape in a growing number of cancers and cancer-associated chronic infections. In this study, we define novel immunotherapeutic applications for the heme precursor compound zinc protoporphyrin IX (ZnPP) based on our discovery that it is a potent small molecule inhibitor of IDO. Inhibitory activity was determined using in vitro and in-cell enzyme assays as well as a novel in vivo pha...

  19. Experiencia de desarrollo humano en la IX Región de La Araucanía, Chile

    OpenAIRE

    Paulina Sanhueza Martínez

    2005-01-01

    El desarrollo es un concepto multidimensional y sus manifestaciones no son homogéneas en el plano territorial. Un indicador que intenta trascender el enfoque estrictamente económico, unidimensional, del desarrollo, e incorpora la noción de oportunidades para la población, es el índice de desarrollo humano (IDH). En este artículo se explica el IDH y sus componentes, y se aplica en un estudio específico en la IX Región de Chile, La Araucanía. Asimismo, se describen y analizan las diferencias de...

  20. Type IX secretion system PorM and gliding machinery GldM form arches spanning the periplasmic space

    OpenAIRE

    Leone, Philippe; Roche, Jennifer; Vincent, Maxence S.; Tran, Quang Hieu; Desmyter, Aline; Cascales, Eric; Kellenberger, Christine; Cambillau, Christian; Roussel, Alain

    2018-01-01

    Type IX secretion system (T9SS), exclusively present in the Bacteroidetes phylum, has been studied mainly in Flavobacterium johnsoniae and Porphyromonas gingivalis. Among the 18 genes, essential for T9SS function, a group of four, porK-N (P. gingivalis) or gldK-N (F. johnsoniae) belongs to a co-transcribed operon that expresses the T9SS core membrane complex. The central component of this complex, PorM (or GldM), is anchored in the inner membrane by a trans-membrane helix and interacts throug...

  1. External morphology of the immature stages of Neotropical heliconians: IX. Dione glycera (C. Felder & R. Felder (Lepidoptera, Nymphalidae, Heliconiinae

    Directory of Open Access Journals (Sweden)

    Héctor A. Vargas

    2014-06-01

    Full Text Available External morphology of the immature stages of Neotropical heliconians: IX. Dione glycera (C. Felder & R. Felder (Lepidoptera, Nymphalidae, Heliconiinae. The biology of the Andean silverspot butterfly Dione glycera (C. Felder & R. Felder, 1861 is still poorly known. This species is restricted to high elevations in the Andes, where the immature stages are found in close association with species of Passiflora belonging to the section Tacsonia (Juss. Harms, especially P. tripartida var. mollissima (Kunth, which is grown for subsistence by villagers. Herein we describe and illustrate the external features of the egg, larva and pupa of D. glycera, based on light and scanning electron microscopy.

  2. [Immunohistochemical expression of microvascular density and carbonic anhidrase IX in renal carcinoma. Relation to histological type and tumoral progression].

    Science.gov (United States)

    Rubio-Briones, J; Calatrava, A; Fernández-Serra, A; Ramos Ruiz, R; Iborra, I; García-Casado, Z; Rubio, L; Trassierra, M; Collado, A; Casanova, J; Gómez-Ferrer, A; Solsona, E; López-Guerrero, J A

    2011-02-01

    to correlate the immunohistochemical expression of microvascular density (MVD) and the carbonic anhydrase IX (CAIX) with the different histological subtypes of renal carcinoma and its progression. we studied 93 patients with renal cell carcinoma operated between 1990 and 2008. Antibodies employed for immunohistochemistry (IHC); CD31 (1: 40, Dako) and CD34 (1: 50, Dako) for MVD and CAIX (1: 100, Santa Cruz). CAIX was validated semiquantitatively as: strongly positive (>85%); weakly positive (10% -85%); and negative (quick and easy approximation to MVD. More research should be done to use it as marker for targeted therapy. Copyright © 2010 AEU. Published by Elsevier Espana. All rights reserved.

  3. Wheat nitrogen fertilizer residues on an ultisol from the IX Region

    International Nuclear Information System (INIS)

    Rouanet M, Juan Luis; Pino N, Ines; Nario M, Adriana; Jobet, Claudio; Parada V, Ana Maria; Videla L, Ximena

    2005-01-01

    The soil nitrogen fertilizer residue is a relevant issue on a wheat production system at the IX Region of Chile, due to the high level of yield and use of resources, having an environmental impact from the use of fertilizer economy. The N-soil residue, not absorb by the plant, can be leach and contaminate the groundwater with nitrates or be redistributed by erosion. The application of isotopic techniques, using fertilizer labeled with 15 N, providing the quantitative information of the fate of this nutrient in the plant-soil system, important in the rate formulation based on the nitrogen use efficiency and in the benefit/cost relation. An assay was carried out in an Ultisol Metrenco Soil (Family fine, mixed, mesic, Typic Paleudults) at Pumalal locality. A Kumpa wheat variety was used, with a control treatment and five N rates applied as Urea labeled with 10% 15 N a.e., split in four times during the crop growth cycle. Total N (Kjeldhal) and 15 N optical emission spectrometer were determined in grain and straw samples harvested in February. Before to the next sow on may, soil sample were taken with an 3 cm diameter hugger (0-20; 20-40 and 40-60 cm depth). The samples were air dried, sieved and analyzed for total N and 15 N. The parameters determined for each depth were: N total (%), 15 N a.e. to obtain the plant-soil system N fertilizer recovery and its N residues in the soil profile. The wheat yield obtained was related with a cubic model using the N fertilizer rate applied (R 2 =0.75). The highest yield for the grain, 9.8 Mg ha -1 , was obtained applying 197 k ha -1 of N, with 45% of 15 N recovered by the grain. Nevertheless, the soil-crop system obtained a high 15 N recovery (>88%), in the soil remained 32-60% as N residue, being not used by the plant during the growth period. Between 27-54% of the 15 N total residue was found at the 0-20 cm soil depth, portion that is susceptible of distribution by erosion, implied in the use of fertilizer economy. Around 4

  4. PREFACE: IX International Conference on Modern Techniques of Plasma Diagnostics and their Application

    Science.gov (United States)

    Savjolov, A. S.; Dodulad, E. I.

    2016-01-01

    The IX Conference on ''Modern Techniques of Plasma Diagnosis and their Application'' was held on 5 - 7 November, 2014 at National Research Nuclear University MEPhI (NRNU MEPhI). The goal of the conference was an exchange of information on both high-temperature and low-temperature plasma diagnostics as well as deliberation and analysis of various diagnostic techniques and their applicability in science, industry, ecology, medicine and other fields. The Conference also provided young scientists from scientific centres and universities engaged in plasma diagnostics with an opportunity to attend the lectures given by the leading specialists in this field as well as present their own results and findings. The first workshop titled ''Modern problems of plasma diagnostics and their application for control of chemicals and the environment'' took place at Moscow Engineering and Physics Institute (MEPhI) in June 1998 with the support of the Section on Diagnostics of the Council of Russian Academic of Science on Plasma Physics and since then these forums have been held at MEPhI every two years. In 2008 the workshop was assigned a conference status. More than 150 specialists on plasma diagnostics and students took part in the last conference. They represented leading Russian scientific centres (such as Troitsk Institute of Innovative and Thermonuclear Research, National Research Centre ''Kurchatov Institute'', Russian Federal Nuclear Centre - All-Russian Scientific Research Institute of Experimental Physics and others) and universities from Belarus, Ukraine, Germany, USA, Belgium and Sweden. About 30 reports were made by young researchers, students and post-graduate students. All presentations during the conference were broadcasted online over the internet with viewers in Moscow, Prague, St. Petersburgh and other cities. The Conference was held within the framework of the Centre of Plasma, Laser Research and Technology supported by MEPhI Academic Excellence Project (Russian

  5. Quantum Estimates of Alpha Emitter Life Time

    Directory of Open Access Journals (Sweden)

    B. Santoso

    2006-01-01

    Full Text Available Quantum estimates of several alpha radioactive life time have been made using the probability of quantum tunneling through the nuclear potential barrier. It is assumed that for a given nucleus with mass number A and isotopic number Z, there exists an alpha particle moving freely back and forth in the nucleus with mass and isotopic numbers A -4 and Z-2. If the probability of penetrating the nuclear potential barrier is Τ, then after N times (N=1/Τ hitting the barrier an alpha particle is emitted. To obtain the elapsed time for emitting an alpha particle requires N times τ0, where τ0 is the time travel for alpha across the nuclear diameter, which is dependent on alpha energy. It is assumed here that this kinetic energy is the same as the emitted energy. The emitting alpha kinetic energies here are calculated by the difference of the masses of the parent and daughter nuclei and the alpha particles. They are in closed agreement with the experimental observations. While the alpha radioactive life time are not the same order of magnitudes but give the same linearity on the logarithmic scale as function of the inverse square root of energy.

  6. Sterically hindered C(alpha, alpha)-disubstituted alpha-amino acids: synthesis from alpha-nitroacetate and incorporation into peptides.

    Science.gov (United States)

    Fu, Y; Hammarström, L G; Miller, T J; Fronczek, F R; McLaughlin, M L; Hammer, R P

    2001-10-19

    The preparation of sterically hindered and polyfunctional C(alpha,alpha)-disubstituted alpha-amino acids (alpha alpha AAs) via alkylation of ethyl nitroacetate and transformation into derivatives ready for incorporation into peptides are described. Treatment of ethyl nitroacetate with N,N-diisopropylethylamine (DIEA) in the presence of a catalytic amount of tetraalkylammonium salt, followed by the addition of an activated alkyl halide or Michael acceptor, gives the doubly C-alkylated product in good to excellent yields. Selective nitro reduction with Zn in acetic acid or hydrogen over Raney Ni gives the corresponding amino ester that, upon saponification, can be protected with the fluorenylmethyloxycarbonyl (Fmoc) group. The first synthesis of an orthogonally protected, tetrafunctional C(alpha,alpha)-disubstituted analogue of aspartic acid, 2,2-bis(tert-butylcarboxymethyl)glycine (Bcmg), is described. Also, the sterically demanding C(alpha,alpha)-dibenzylglycine (Dbg) has been incorporated into a peptide using solid-phase synthesis. It was found that once sterically congested Dbg is at the peptide N-terminus, further chain extension becomes very difficult using uronium or phosphonium salts (PyAOP, PyAOP/HOAt, HATU). However, preformed amino acid symmetrical anhydride couples to N-terminal Dbg in almost quantitative yield in nonpolar solvent (dichloroethane-DMF, 9:1).

  7. Bianchi - I, II, VIII, IX and Kantowski-Sachs-like cosmological models with perfect fluid and electromagnetic fields with conductivity current

    International Nuclear Information System (INIS)

    Portugal, R.

    1984-01-01

    Three processes of solutions of the Einstein-Maxwell equations for Bianchi - I, II, VIII, IX and Kantowski-Sachs-like cosmological models with perfect fluid in magnetohydrolodynamical regimem are presented. Diagonal Bianchi-like models are considered with two anisotropy direction in the maximum. Solutions are found for Bianchi-II and IX-like models with energy conditions to be analyzed. Solutions are found for Bianchi-IX and Kantowski-Sachs-Like models with positive electric conductivity and satisfering to the predominant energy conditions. Solutions are formed for isotropic Kantowski-Sachs-Like models satisfering to the equation of state p=λρ, 0 0, admiting, in addition to the perfect fluid, electric field only. It is shown that a class of Bertotti-Robinson-like solutions is unstable by perturbations and it is carried in Kantowski-Sachs-like models with non-null electric conductivity. (L.C.) [pt

  8. Broadband X-ray spectra of the ultraluminous x-ray source Holmberg IX X-1 observed with NuSTAR, XMM-Newton, and Suzaku

    DEFF Research Database (Denmark)

    Walton, D. J.; Harrison, F. A.; Grefenstette, B. W.

    2014-01-01

    We present results from the coordinated broadband X-ray observations of the extreme ultraluminous X-ray source Holmberg IX X-1 performed by NuSTAR, XMM-Newton, and Suzaku in late 2012. These observations provide the first high-quality spectra of Holmberg IX X-1 above 10 keV to date, extending the X...... exhibits a spectrum consistent with emission from the standard low/hard accretion state seen in Galactic black hole binaries, which would have been expected if Holmberg IX X-1 harbors a truly massive black hole accreting at substantially sub-Eddington accretion rates. The NuSTAR data confirm...... at the highest energies, which may further support this scenario. The available data allow for either of the two thermal components to dominate the spectral evolution, although both scenarios require highly nonstandard behavior for thermal accretion disk emission....

  9. ALA-PpIX variability quantitatively imaged in A431 epidermoid tumors using in vivo ultrasound fluorescence tomography and ex vivo assay

    Science.gov (United States)

    DSouza, Alisha V.; Flynn, Brendan P.; Gunn, Jason R.; Samkoe, Kimberley S.; Anand, Sanjay; Maytin, Edward V.; Hasan, Tayyaba; Pogue, Brian W.

    2014-03-01

    Treatment monitoring of Aminolevunilic-acid (ALA) - Photodynamic Therapy (PDT) of basal-cell carcinoma (BCC) calls for superficial and subsurface imaging techniques. While superficial imagers exist for this purpose, their ability to assess PpIX levels in thick lesions is poor; additionally few treatment centers have the capability to measure ALA-induced PpIX production. An area of active research is to improve treatments to deeper and nodular BCCs, because treatment is least effective in these. The goal of this work was to understand the logistics and technical capabilities to quantify PpIX at depths over 1mm, using a novel hybrid ultrasound-guided, fiber-based fluorescence molecular spectroscopictomography system. This system utilizes a 633nm excitation laser and detection using filtered spectrometers. Source and detection fibers are collinear so that their imaging plane matches that of ultrasound transducer. Validation with phantoms and tumor-simulating fluorescent inclusions in mice showed sensitivity to fluorophore concentrations as low as 0.025μg/ml at 4mm depth from surface, as presented in previous years. Image-guided quantification of ALA-induced PpIX production was completed in subcutaneous xenograft epidermoid cancer tumor model A431 in nude mice. A total of 32 animals were imaged in-vivo, using several time points, including pre-ALA, 4-hours post-ALA, and 24-hours post-ALA administration. On average, PpIX production in tumors increased by over 10-fold, 4-hours post-ALA. Statistical analysis of PpIX fluorescence showed significant difference among all groups; panalysis and results will be presented to illustrate variability and the potential for imaging these values at depth.

  10. PENGARUH STRETCHING TERHADAP NYERI PUNGGUNG BAWAH DAN LINGKUP GERAK SENDI PADA PENYADAP GETAH KARET PT PERKEBUNAN NUSANTARA IX (PERSERO KENDAL

    Directory of Open Access Journals (Sweden)

    Sapto Jeny Astuti

    2016-01-01

    Full Text Available Abstrak   Nyeri Punggung Bawah merupakan keluhan otot yang menjadi penyebab utama disabilitas, penurunan kualitas hidup dan keluhan utama bagi pekerja yang datang ke pelayanan kesehatan. Pekerja penyadapan getah karet PTPN IX (Persero Kebun Merbuh Kendal berisiko tinggi terhadap nyeri punggung bawah. Nyeri punggung terjadi karena sikap dan beban kerja yang terlalu tinggi ditambah dengan peregangan otot yang tidak cukup bagi pekerja. Tujuan dari penelitian ini adalah membandingkan tingkat keluhan nyeri punggung dan lingkup gerak sendi dengan pelatihan peregangan dan tanpa pelatihan peregangan. Jenis penelitian ini adalah eksperimen semu dengan rancangan Nonequivalent control group design yang melibatkan 1 kelompok intervensi dan 1 kelompok kontrol. Responden penelitian ini adalah 60 orang penyadap getah karet. Instrumen yang digunakan adalah pedoman peregangan nyeri punggung bawah, skala pengukuran nyeri Visual Analog Scale dan Rapid Entire Body Assesment (REBA. Analisis data dilakukan menggunakan uji Mann-Whitney. Hasil penelitian menunjukkan bahwa latihan peregangan mempengaruhi nyeri punggung bawah (nilai p adalah 0,066>0,05. Namun latihan peregangan tidak berpengaruh terhadap lingkup gerak sendi (nilai p adalah 0,0010.05 While the other result showed that stretching exercise has no influence for range of motion  (p-value 0.001<0.05 in the latex wiretapping workersPTPN IX (Persero Merbuh Garden, Kendal

  11. Carbon anhydrase IX specific immune responses in patients with metastatic renal cell carcinoma potentially cured by interleukin-2 based immunotherapy

    DEFF Research Database (Denmark)

    Rasmussen, Susanne; Donskov, Frede; Pedersen, Johannes W

    2013-01-01

    Abstract The majority of clear-cell renal cell carcinomas (ccRCC) show high and homogeneous expression levels of the tumor associated antigen (TAA) carbonic anhydrase IX (CAIX), and treatment with interleukin-2 (IL-2) based immunotherapy can lead to cure in patients with metastatic renal cell car...... interest in future cancer vaccines, but more studies are needed to elucidate the immunological mechanisms of action in potentially cured patients treated with an immunotherapeutic agent.......Abstract The majority of clear-cell renal cell carcinomas (ccRCC) show high and homogeneous expression levels of the tumor associated antigen (TAA) carbonic anhydrase IX (CAIX), and treatment with interleukin-2 (IL-2) based immunotherapy can lead to cure in patients with metastatic renal cell...... of disease (NED) following treatment with IL-2 based immunotherapy, and thus potentially cured. Immune reactivity in these patients was compared with samples from patients with dramatic tumor response obtained immediately at the cessation of therapy, samples from patients that experienced progressive disease...

  12. Breeding of transgenic cattle for human coagulation factor IX by a combination of lentiviral system and cloning.

    Science.gov (United States)

    Monzani, P S; Sangalli, J R; De Bem, T H C; Bressan, F F; Fantinato-Neto, P; Pimentel, J R V; Birgel-Junior, E H; Fontes, A M; Covas, D T; Meirelles, F V

    2013-02-28

    Recombinant coagulation factor IX must be produced in mammalian cells because FIX synthesis involves translational modifications. Human cell culture-based expression of human coagulation factor IX (hFIX) is expensive, and large-scale production capacity is limited. Transgenic animals may greatly increase the yield of therapeutic proteins and reduce costs. In this study, we used a lentiviral system to obtain transgenic cells and somatic cell nuclear transfer (SCNT) to produce transgenic animals. Lentiviral vectors carrying hFIX driven by 3 bovine β-casein promoters were constructed. Bovine epithelial mammary cells were transduced by lentivirus, selected with blasticidin, plated on extracellular matrix, and induced by lactogenic hormones; promoter activity was evaluated by quantitative PCR. Transcriptional activity of the 5.335-kb promoter was 6-fold higher than the 3.392- and 4.279-kb promoters, which did not significantly differ. Transgenic bovine fibroblasts were transduced with lentivirus carrying the 5.335-kb promoter and used as donor cells for SCNT. Cloned transgenic embryo production yielded development rates of 28.4%, similar to previous reports on cloned non-transgenic embryos. The embryos were transferred to recipient cows (N = 21) and 2 births of cloned transgenic cattle were obtained. These results suggest combination of the lentiviral system and cloning may be a good strategy for production of transgenic cattle.

  13. An immunohistochemical study of the expression of the hypoxia markers Glut-1 and Ca-IX in canine sarcomas.

    Science.gov (United States)

    Abbondati, E; Del-Pozo, J; Hoather, T M; Constantino-Casas, F; Dobson, J M

    2013-11-01

    Tumor hypoxia has been associated with increased malignancy, likelihood of metastasis, and increased resistance to radiotherapy and chemotherapy in human medicine. Hypoxia-inducible factor-1 (HIF-1) is a key transcription factor that is induced by tumor hypoxia and regulates the pathways involved in cellular response and adaptation to the hostile tumor microenvironment. HIF-1 induces transcription of different proteins, including Ca-IX and Glut-1, which are considered endogenous markers of chronic hypoxia in solid tumors in humans. In this study, sections from 40 canine sarcomas (20 histiocytic sarcomas and 20 low-grade soft-tissue sarcomas) were immunostained for these markers. Expression of Glut-1 was scored based on percentage of positive staining cells (0 = 50%) and intensity of cellular staining (1 = weak; 2 = strong); Ca-IX was scored based on percentage of positive cells (0 = 30%). Intratumoral microvessel density was measured using CD31 to assess intratumoral neoangiogenesis. Histiocytic sarcomas showed statistically significant higher Glut-1 immunoreactivity and angiogenesis than did low-grade soft-tissue sarcomas. Intratumoral microvessel density in histiocytic sarcomas was positively associated with Glut-1 immunoreactivity score. These findings suggest a potential role of hypoxia in the biology of these tumors and may provide a base for investigation of the potential prognostic use of these markers in naturally occurring canine tumors.

  14. Hypothalamic PGC-1 alpha Protects Against High-Fat Diet Exposure by Regulating ER alpha

    NARCIS (Netherlands)

    Morselli, Eugenia; Fuente-Martin, Esther; Finan, Brian; Kim, Min; Frank, Aaron; Garcia-Caceres, Cristina; Navas, Carlos Rodriguez; Gordillo, Ruth; Neinast, Michael; Kalainayakan, Sarada P.; Li, Dan L.; Gao, Yuanqing; Yi, Chun-Xia; Hahner, Lisa; Palmer, Biff F.; Tschöp, Matthias H.; Clegg, Deborah J.

    2014-01-01

    High-fat diets (HFDs) lead to obesity and inflammation in the central nervous system (CNS). Estrogens and estrogen receptor alpha (ER alpha) protect premenopausal females from the metabolic complications of inflammation and obesity-related disease. Here, we demonstrate that hypothalamic PGC-1 alpha

  15. Tumor necrosis factor alpha (TNF alpha) in human skin : A comparison of different antibodies for immunohistochemistry

    NARCIS (Netherlands)

    van der Laan, N; de Leij, LFMH; Buurman, W; Timens, W; ten Duis, HJ

    Conflicting results have been reported regarding the localization and presence of TNF alpha in normal human skin, To study TNF alpha expression, we tested a panel of antibodies directed against human TNF alpha, First, antibodies were tested for immunoreactivity on cytospots of isolated

  16. Study of the pygmy dipole resonance in Mo-94 using the (alpha, alpha ' gamma) coincidence technique

    NARCIS (Netherlands)

    Derya, V.; Endres, J.; Elvers, M.; Harakeh, M. N.; Pietralla, N.; Romig, C.; Savran, D.; Scheck, M.; Siebenhuehner, F.; Stoica, V. I.; Wortche, H. J.; Zilges, A.

    2013-01-01

    The (alpha, alpha' gamma) reaction at E-alpha = 136 MeV was used to study the electric dipole response in the open-shell vibrational nucleus Mo-94 below the neutron-separation threshold. The coincidence experiment has been performed at the Kernfysisch Versneller Instituut in Groningen, The

  17. Psychiatric Symptoms in Alpha-Mannosidosis

    Science.gov (United States)

    Malm, D.; Pantel, J.; Linaker, O. M.

    2005-01-01

    Alpha-mannosidosis is characterized by mild to moderate intellectual disability (ID), moderate to severe neurosensory hearing loss, frequent infections, psychomotor disturbances and skeletal dysmorphism. For the first time, a panel of nine alpha-mannosidosis patients with psychiatric symptoms is presented. The clinical picture has several…

  18. Coefficient Alpha Bootstrap Confidence Interval under Nonnormality

    Science.gov (United States)

    Padilla, Miguel A.; Divers, Jasmin; Newton, Matthew

    2012-01-01

    Three different bootstrap methods for estimating confidence intervals (CIs) for coefficient alpha were investigated. In addition, the bootstrap methods were compared with the most promising coefficient alpha CI estimation methods reported in the literature. The CI methods were assessed through a Monte Carlo simulation utilizing conditions…

  19. Alpha Shape Topology of the Cosmic Web

    NARCIS (Netherlands)

    Weygaert, Rien van de; Platen, Erwin; Vegter, Gert; Eldering, Bob; Kruithof, Nico

    2010-01-01

    We study the topology of the Megaparsec Cosmic Web on the basis of the Alpha Shapes of the galaxy distribution. The simplicial complexes of the alpha shapes are used to determine the set of Betti numbers (βk, k = 1, . . . , D), which represent a complete characterization of the topology of a

  20. Central and peripheral alpha-adrenoceptors

    NARCIS (Netherlands)

    van Zwieten, P A; van Meel, J. C. A.; de Jonge, A; Wilffert, B; Timmermans, P B

    1982-01-01

    The recent interest in the characterization and functional, role of alpha-adrenoceptors has prompted us to study the following different, although interdigitated, lines of research: (a) The functional role of calcium ions in the process of vasoconstriction, induced by alpha 2-adrenoceptor

  1. Producing alpha-olefins using polyketide synthases

    Energy Technology Data Exchange (ETDEWEB)

    Fortman, Jeffrey L.; Katz, Leonard; Steen, Eric J.; Keasling, Jay D.

    2018-01-02

    The present invention provides for a polyketide synthase (PKS) capable of synthesizing an .alpha.-olefin, such as 1-hexene or butadiene. The present invention also provides for a host cell comprising the PKS and when cultured produces the .alpha.-olefin.

  2. Bayesian Meta-Analysis of Coefficient Alpha

    Science.gov (United States)

    Brannick, Michael T.; Zhang, Nanhua

    2013-01-01

    The current paper describes and illustrates a Bayesian approach to the meta-analysis of coefficient alpha. Alpha is the most commonly used estimate of the reliability or consistency (freedom from measurement error) for educational and psychological measures. The conventional approach to meta-analysis uses inverse variance weights to combine…

  3. ALPHA experiment facility and Prof. Jeffrey Hangst.

    CERN Multimedia

    Maximilien Brice

    2010-01-01

    Picture 01-07: General views of the ALPHA experiment Picture 5: Andrea Gutierrez, a PhD student from UBC, transfers liquid helium from a storage dewar into the cryostat containing the superconducting magnetic trap used by the ALPHA experiment.Picture 08-11: Jeffery Hangst, spokesperson for ALPHA Picture 12: The ALPHA silicon detector, which surrounds the trapping resion and is used for imaging antiproton annihilations (Credit University of Liverpool) Picture 13: Untrapped antihydrogen atoms annihilating on the inner surface of the ALPHA trap. These are measured by the ALPHA annihilation detector. The events are concentrated at the electrode radius of about 22.3 mm. The coordinates are defined in the Nature article, Figure 1b. Picture 14: The electrodes (gold) for the ALPHA Penning trap being inserted into the vacuum chamber and cryostat assembly. This is the trap used to combine or "mix" positrons and antiprotons to make antihydrogen. (Credit: Niels Madsen ALPHA/Swansea.) Picture 15: Top, a diagram of the...

  4. Alpha-1 Antitrypsin Deficiency (Inherited Emphysema)

    Science.gov (United States)

    ... antitrypsin inactivates elastase once it has finished its job. Without alpha 1 antitrypsin, elastase can destroy the air sacs of the lung. How is the diagnosis made? Because Alpha-1 related disease is COPD, the diagnosis is made by the same methods. Your doctor may have you do a number ...

  5. A stable lipid-induced aggregate of alpha-synuclein

    NARCIS (Netherlands)

    Drescher, Malte; van Rooijen, Bart D; Veldhuis, Gertjan; Subramaniam, Vinod; Huber, Martina

    2010-01-01

    The Parkinson's disease-related protein alpha-Synuclein (alphaS) is a 140 residue intrinsically disordered protein. Its membrane-binding properties are thought to be relevant for its physiological or pathologic activity. Here, the interaction of alphaS with POPG

  6. Improved peak shape fitting in alpha spectra.

    Science.gov (United States)

    Pommé, S; Caro Marroyo, B

    2015-02-01

    Peak overlap is a recurrent issue in alpha-particle spectrometry, not only in routine analyses but also in the high-resolution spectra from which reference values for alpha emission probabilities are derived. In this work, improved peak shape formulae are presented for the deconvolution of alpha-particle spectra. They have been implemented as fit functions in a spreadsheet application and optimum fit parameters were searched with built-in optimisation routines. Deconvolution results are shown for a few challenging spectra with high statistical precision. The algorithm outperforms the best available routines for high-resolution spectrometry, which may facilitate a more reliable determination of alpha emission probabilities in the future. It is also applicable to alpha spectra with inferior energy resolution. Copyright © 2014 The Authors. Published by Elsevier Ltd.. All rights reserved.

  7. Technical Basis for the Use of Alpha Absorption Corrections on RCF Gross Alpha Data

    International Nuclear Information System (INIS)

    Ceffalo, G.M.

    1999-01-01

    This document provides the supporting data and rationale for making absorption corrections to gross alpha data to correct alpha data for loss due to absorption in the sample matrix. For some time there has been concern that the gross alpha data produced by the Environmental Restoration Contractor Radiological Counting Facility, particularly gross alpha analysis on soils, has been biased toward low results, as no correction for self-absorption was applied to the counting data. The process was investigated, and a new methodology for alpha self-absorption has been developed

  8. Elimination of alpha-gal xenoreactive epitope: alpha-galactosidase treatment of porcine heart valves.

    Science.gov (United States)

    Choi, Sun-Young; Jeong, Hee-Jin; Lim, Hong-Gook; Park, Seong-Sik; Kim, Soo-Hwan; Kim, Yong Jin

    2012-05-01

    Porcine heart valves are among the most widely used tissue valves in clinical heart valve implantation. However, immunologic responses have been implicated as potential causes of the limited durability of xenograft heart valves. The study aim was to determine the effectiveness of alpha-galactosidase treatment used to degrade the major xenoreactive antigens found in xenograft heart valves. Fresh porcine heart valves and pericardium treated with alpha-galactosidase were studied to evaluate the xenoreactive galactose (alpha1,3) galactose (alpha-gal) antigen. Removal of the alpha-gal epitope from the porcine heart valve was monitored via 3,3'-diaminobenzidine staining intensity, while the removal of alpha-gal from N-glycans on porcine heart valves treated with recombinant alpha-galactosidase was determined either qualitatively or quantitatively by mass fingerprinting using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The porcine pericardium was used for monitoring the change in mechanical properties after alpha-galactosidase treatment. In addition, the biomechanical modification property of collagen fiber rearrangement on tissue was assessed using transmission electron microscopy (TEM). Following a 24-h incubation at pH 7.2, 4 degrees C, employing 0.1 U/ml of Bacteroides thetaiotaomicron-derived recombinant alpha-galactosidase, the enzyme effectively removed the alpha-gal epitopes expressed on porcine heart valves. The identification type of alpha-gal N-glycan on fresh aortic valve, aortic wall, pulmonary valve, and pulmonary wall was 7.1%, 10.3%, 6% and 8%, respectively. In the presence of alpha-galactosidase treatment, alpha-gal-containing N-glycans were converted into alpha-gal-negative N-glycans. Likewise, alpha-gal-containing N-glycans were not detected when MALDI-TOF MS quantitative analysis was used. Furthermore, no significant difference was observed in the mechanical properties and findings from TEM in alpha

  9. Determination of alpha_s using jet cross section parameterizations at hadron colliders

    CERN Document Server

    Stenzel, H

    2001-01-01

    Precise measurements of the single inclusive jet cross section have been performed by the TEVATRON experiments and will be provided by the LHC experiments extending to larger values of transverse energy. Theoretical predictions of this observable at NLO in perturbative QCD depend both on the PDF parameterization set and on the value of the strong coupling constant alpha_s. In this paper the dependence of the jet cross section on alpha_s is investigated. A method is presented to extract alpha_s(E_T) from a cross section measurement based on a parameterization of the alpha_s dependence. Systematic uncertainties and the E_T-range of applicability are discussed. A comparative study is performed between the case of ppbar at sqrt{s}=1.8 TeV (TEVATRON) and pp scattering at sqrt{s}=14 TeV (LHC).

  10. Alpha1 and Alpha2 Integrins Mediate Invasive Activity of Mouse Mammary Carcinoma Cells through Regulation of Stromelysin-1 Expression

    Energy Technology Data Exchange (ETDEWEB)

    Lochter, Andre; Navre, Marc; Werb, Zena; Bissell, Mina J

    1998-06-29

    Tumor cell invasion relies on cell migration and extracellular matrix proteolysis. We investigated the contribution of different integrins to the invasive activity of mouse mammary carcinoma cells. Antibodies against integrin subunits {alpha}6 and {beta}1, but not against {alpha}1 and {alpha}2, inhibited cell locomotion on a reconstituted basement membrane in two-dimensional cell migration assays, whereas antibodies against {beta}1, but not against a6 or {alpha}2, interfered with cell adhesion to basement membrane constituents. Blocking antibodies against {alpha}1 integrins impaired only cell adhesion to type IV collagen. Antibodies against {alpha}1, {alpha}2, {alpha}6, and {beta}1, but not {alpha}5, integrin subunits reduced invasion of a reconstituted basement membrane. Integrins {alpha}1 and {alpha}2, which contributed only marginally to motility and adhesion, regulated proteinase production. Antibodies against {alpha}1 and {alpha}2, but not {alpha}6 and {beta}1, integrin subunits inhibited both transcription and protein expression of the matrix metalloproteinase stromelysin-1. Inhibition of tumor cell invasion by antibodies against {alpha}1 and {alpha}2 was reversed by addition of recombinant stromelysin-1. In contrast, stromelysin-1 could not rescue invasion inhibited by anti-{alpha}6 antibodies. Our data indicate that {alpha}1 and {alpha}2 integrins confer invasive behavior by regulating stromelysin-1 expression, whereas {alpha}6 integrins regulate cell motility. These results provide new insights into the specific functions of integrins during tumor cell invasion.

  11. Mapping High-Velocity H-alpha and Lyman-alpha Emission from Supernova 1987A

    Science.gov (United States)

    France, Kevin; McCray, Richard; Fransson, Claes; Larsson, Josefin; Frank, Kari A.; Burrows, David N.; Challis, Peter; Kirshner, Robert P.; Chevalier, Roger A.; Garnavich, Peter; hide

    2015-01-01

    We present new Hubble Space Telescope images of high-velocity H-alpha and Lyman-alpha emission in the outer debris of SN 1987A. The H-alpha images are dominated by emission from hydrogen atoms crossing the reverse shock. For the first time we observe emission from the reverse shock surface well above and below the equatorial ring, suggesting a bipolar or conical structure perpendicular to the ring plane. Using the H-alpha imaging, we measure the mass flux of hydrogen atoms crossing the reverse shock front, in the velocity intervals (-7,500 < V(sub obs) < -2,800 km/s) and (1,000 < V(sub obs) < 7,500 km/s), ?M(sub H) = 1.2 × 10(exp -3) M/ y. We also present the first Lyman-alpha imaging of the whole remnant and new Chandra X-ray observations. Comparing the spatial distribution of the Lyman-alpha and X-ray emission, we observe that the majority of the high-velocity Lyman-alpha emission originates interior to the equatorial ring. The observed Lyman-alpha/H-alpha photon ratio, R(L-alpha/H-alpha) approx. = 17, is significantly higher than the theoretically predicted ratio of approx. = 5 for neutral atoms crossing the reverse shock front. We attribute this excess to Lyman-alpha emission produced by X-ray heating of the outer debris. The spatial orientation of the Lyman-alpha and X-ray emission suggests that X-ray heating of the outer debris is the dominant Lyman-alpha production mechanism in SN 1987A at this phase in its evolution.

  12. Direct binding of syndecan-4 cytoplasmic domain to the catalytic domain of protein kinase C alpha (PKC alpha) increases focal adhesion localization of PKC alpha

    DEFF Research Database (Denmark)

    Lim, Ssang-Taek; Longley, Robert L; Couchman, John R

    2003-01-01

    alpha. Full-length PKC alpha weakly interacted with 4V by yeast two-hybrid assays, but PKC alpha constructs that lack the pseudosubstrate region or constructs of the whole catalytic domain interacted more strongly. A mutated 4V sequence (4V(YF): LGKKPIFKK) did not interact with PKC alpha, indicating...

  13. Increased virulence and competitive advantage of a/alpha over a/a or alpha/alpha offspring conserves the mating system of Candida albicans.

    Science.gov (United States)

    Lockhart, Shawn R; Wu, Wei; Radke, Joshua B; Zhao, Rui; Soll, David R

    2005-04-01

    The majority of Candida albicans strains in nature are a/alpha and must undergo homozygosis to a/a or alpha/alpha to mate. Here we have used a mouse model for systemic infection to test the hypothesis that a/alpha strains predominate in nature because they have a competitive advantage over a/a and alpha/alpha offspring in colonizing hosts. Single-strain injection experiments revealed that a/alpha strains were far more virulent than either their a/a or alpha/alpha offspring. When equal numbers of parent a/alpha and offspring a/a or alpha/alpha cells were co-injected, a/alpha always exhibited a competitive advantage at the time of extreme host morbidity or death. When equal numbers of an engineered a/a/alpha2 strain and its isogenic a/a parent strain were co-injected, the a/a/alpha2 strain exhibited a competitive advantage at the time of host morbidity or death, suggesting that the genotype of the mating-type (MTL) locus, not associated genes on chromosome 5, provides a competitive advantage. We therefore propose that heterozygosity at the MTL locus not only represses white-opaque switching and genes involved in the mating process, but also affects virulence, providing a competitive advantage to the a/alpha genotype that conserves the mating system of C. albicans in nature.

  14. Alpha intrusion on ovenight polysomnogram

    Directory of Open Access Journals (Sweden)

    Nahapetian R

    2014-06-01

    Full Text Available No abstract available. Article truncated after 150 words. A 30 year-old Army veteran with a past medical history significant for chronic lumbar back pain stemming from a fall-from-height injury sustained in 2006 was referred to the sleep laboratory for evaluation of chronic fatigue and excessive daytime hypersomnolence. His Epworth sleepiness scale score was 16. He denied a history of snoring and witnessed apnea. Body Mass Index (BMI was 25.7 kg/m2. His main sleep related complaints were frequent nocturnal arousals, poor sleep quality, un-refreshing sleep, prolonged latency to sleep onset, and nightmares. An In-lab attended diagnostic polysomnogram was performed. Sleep efficiency was reduced (73% and overall arousal index was not significantly elevated (3.2 events/hour. The sleep study showed rapid eye movement (REM related sleep disordered breathing that did not meet diagnostic criteria for sleep apnea. There was no evidence for period limb movement disorder. However, the study was significant for alpha wave intrusion in stage N2 non-REM and stage ...

  15. Diabetes and alpha lipoic acid

    Directory of Open Access Journals (Sweden)

    Issy eLaher

    2011-11-01

    Full Text Available Diabetes mellitus is a multi-faceted metabolic disorder where there is increased oxidative stress that contributes to the pathogenesis of this debilitating disease. This has prompted several investigations into the use of antioxidants as a complementary therapeutic approach. Alpha lipoic acid, a naturally occurring dithiol compound which plays an essential role in mitochondrial bioenergetic reactions, has gained considerable attention as an antioxidant for use in managing diabetic complications. Lipoic acid quenches reactive oxygen species, chelates metal ions, and reduces the oxidized forms of other antioxidants such as vitamin C, vitamin E and glutathione. It also boosts antioxidant defense system through Nrf2-mediated antioxidant gene expression and by modulation of peroxisome proliferator activated receptors-regulated genes. ALA inhibits nuclear factor kappa B and activates AMPK in skeletal muscles, which in turn have a plethora of metabolic consequences. These diverse actions suggest that a lipoic acid acts by multiple mechanisms, many of which have only been uncovered recently. In this review we briefly summarize the known biochemical properties of lipoic acid and then discussed the oxidative mechanisms implicated in diabetic complications and the mechanisms by which lipoic acid may ameliorate these reactions. The findings of some of the clinical trials in which lipoic acid administration has been tested in diabetic patients during the last 10 years are summarized. It appears that the clearest benefit of lipoic acid supplementation is in patients with diabetic neuropathy.

  16. Diagnostics for PLX-alpha

    Science.gov (United States)

    Gilmore, Mark; Hsu, Scott

    2015-11-01

    The goal of the Plasma Liner eXperiment PLX-alpha at Los Alamos National Laboratory is to establish the viability of creating a spherically imploding plasma liner for MIF and HED applications, using a spherical array of supersonic plasma jets launched by innovative contoured-gap coaxial plasma guns. PLX- α experiments will focus in particular on establishing the ram pressure and uniformity scalings of partial and fully spherical plasma liners. In order to characterize these parameters experimentally, a suite of diagnostics is planned, including multi-camera fast imaging, a 16-channel visible interferometer (upgraded from 8 channels) with reconfigurable, fiber-coupled front end, and visible and VUV high-resolution and survey spectroscopy. Tomographic reconstruction and data fusion techniques will be used in conjunction with interferometry, imaging, and synthetic diagnostics from modeling to characterize liner uniformity in 3D. Diagnostic and data analysis design, implementation, and status will be presented. Supported by the Advanced Research Projects Agency - Energy - U.S. Department of Energy.

  17. ADVANCES AND CHALLENGES IN SUGARCANE BIOTECHNOLOY AND PLANT PATHOLOGY: A REVIEW OF THE IX PLANT PATHOLOGY WORKSHOP AND VI MOLECULAR BIOLOGY WORKSHOP

    Science.gov (United States)

    The IX Pathology Workshop and VI Molecular Biology Workshop of the International Society of Sugar Cane Technologists (ISSCT) were organised jointly and hosted by the Colombian Sugarcane Research Centre (CENICAÑA) from 23-27 June 2008 at the Radisson Royal Hotel in Cali, Colombia. The Workshop was we...

  18. Ramona cold nuclear bank of the Siemens 9x9-IX fuel; Banco nuclear Ramona Cold del combustible Siemens 9x9-1X

    Energy Technology Data Exchange (ETDEWEB)

    Alonso V, G. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    1994-01-15

    With the purpose of making the transitory analyses of the Laguna Verde Nuclear Power station when Siemens fuel of the type 9x9-IX is used, proposed for the cycle 2 of the Unit 2, the data bank in cold condition for the Ramona code has been generated. (Author)

  19. Hemophilia as a defect of the tissue factor pathway of blood coagulation: Effect of factors VIII and IX on factor X activation in a continuous-flow reactor

    International Nuclear Information System (INIS)

    Repke, D.; Gemmell, C.H.; Guha, A.; Turitto, V.T.; Nemerson, Y.; Broze, G.J. Jr.

    1990-01-01

    The effect of factors VIII and IX on the ability of the tissue factor-factor VIIa complex to activate factor X was studied in a continuous-flow tubular enzyme reactor. Tissue factor immobilized in a phospholipid bilayer on the inner surface of the tube was exposed to a perfusate containing factors VIIa, VIII, IX, and X flowing at a wall shear rate of 57, 300, or 1130 sec -1 . The addition of factors VIII and IX at their respective plasma concentrations resulted in a further 2 endash-to 3 endash fold increase. The direct activation of factor X by tissue factor-factor VIIa could be virtually eliminated by the lipoprotein-associated coagulation inhibitor. These results suggest that the tissue factor pathway, mediated through factors VIII and IX, produces significant levels of factor Xa even in the presence of an inhibitor of the tissue factor-factor VIIa complex; moreover, the activation is dependent on local shear conditions. These findings are consistent both with a model of blood coagulation in which initiation of the system results from tissue factor and with the bleeding observed in hemophilia

  20. Topical glycerol monooleate/propylene glycol formulations enhance 5-aminolevulinic acid in vitro skin delivery and in vivo protophorphyrin IX accumulation in hairless mouse skin.

    Science.gov (United States)

    Steluti, Regilene; De Rosa, Fernanda Scarmato; Collett, John; Tedesco, Antônio Cláudio; Bentley, Maria Vitória Lopes Badra

    2005-08-01

    Photodynamic therapy (PDT), a potential therapy for cancer treatment, utilizes exogenously applied or endogenously formed photosensitizers, further activated by light in an appropriate wavelength and dose to induce cell death through free radical formation. 5-Aminolevulinic acid (5-ALA) is a pro-drug which can be converted to the effective photosensitizer, protoporphyrin IX (PpIX). However, the use of 5-ALA in PDT is limited by the low penetration capacity of this highly hydrophilic molecule into appropriate skin layers. In the present study, we propose to increase 5-ALA penetration by using formulations containing glycerol monooleate (GMO), an interesting and useful component of pharmaceutical formulations. Propylene glycol solutions containing different concentrations of GMO significantly increased the in vitro skin permeation/retention of 5-ALA in comparison to control solutions. In vivo studies also showed increased PpIX accumulation in mouse hairless skin, after the use of topical 5-ALA formulations containing GMO in a concentration-dependent manner. The results show that skin 5-ALA penetration and PpIX accumulation, important factors for the success of topical 5-ALA-PDT in skin cancer, are optimized by GMO/propylene glycol formulations.

  1. Retsensioon : Riigikogu VII, VIII ja IX koosseis. Statistikat ja kommentaare. Peatoimetaja Aaro Mõttus. Tallinn : Riigikogu Kantselei, Eesti Rahvusraamatukogu, 2004. 326 lk. / Mart Nutt

    Index Scriptorium Estoniae

    Nutt, Mart, 1962-

    2004-01-01

    Arvustus: Riigikogu VII, VIII ja IX koosseis. Statistikat ja kommentaare / peatoim. Aaro Mõttus. Tallinn : Riigikogu Kantselei, Eesti Rahvusraamatukogu, 2004. - Lisatud: Ott Heinapuu tutvustav sõnum retsenseeritud väljaande kohta lk. 193. - Vt. ka: http://www.riigikogu.ee/rito/index.php?id=11357

  2. Trauma-Informed Response in the Age of Title IX: Considerations for College Counselors Working with Survivors of Power-Based Personal Violence

    Science.gov (United States)

    Conley, Abigail H.; Griffith, Catherine

    2016-01-01

    Intimate partner violence, sexual violence, and stalking are pervasive in the United States, and college women are disproportionately affected by this power-based personal violence (PBPV). Title IX mandates that colleges and universities offer support services to trauma survivors, and college counselors should be prepared to meet this need.…

  3. Data Summary Report for the Annual Fourmile Branch and F- and H-Area Seeplines, Appendix IX Metals and Radionuclides, 1998

    International Nuclear Information System (INIS)

    Koch, J.

    1999-01-01

    This report presents a summary of the definitive data validation and verification for the 1998 RFI/RI annual Appendix IX metals and radionuclides survey for Fourmile Branch and the F- and H-Area Seeplines. The validation process began with project mobilization and continued through the delivery of EDDs and this report

  4. How Title IX and Proportionality Population Concepts Have Equalized Collegiate Women's Sports Programs with Men's Sports and Allows Spillover Gains for Women in the Workplace

    Science.gov (United States)

    Compton, Nina H.; Compton, J. Douglas

    2010-01-01

    Title IX of the Education Reformation Act was passed in 1972 for the purpose of providing equality between males and females in intercollegiate sports. Since its inception the disparity between men's and women's varsity athletics programs has persisted throughout American colleges and universities. Discrimination and equal protection concerns…

  5. Ectopic expression of Arabidopsis L-type lectin receptor kinase genes LecRK-I.9 and LecRK-IX.1 in Nicotiana benthamiana confers Phytophthora resistance

    NARCIS (Netherlands)

    Wang, Yan; Nsibo, D.L.; Juhar, H.M.; Govers, Francine; Bouwmeester, Klaas

    2016-01-01

    Key message: TransgenicNicotiana benthamianalines with constitutive expression of an Arabidopsis lectin receptor kinase gene (LecRK-I.9orLecRK-IX.1) show enhanced resistance toPhytophthorapathogens, demonstrating conserved gene functionality after interfamily transfer.Abstract: In plants, cell

  6. Espacio retroestíleo, punto de encuentros nerviosos: vii, ix, x, xi, xii pares craneales y el ganglio simpático cervical superior

    OpenAIRE

    Franco Castillo, Julio César; Santa María, Elsa Margarita

    2014-01-01

    Se propone una técnica para el abordaje, con fines de terapia neural, de los elementos contenidos en el espacio retroestíleo (pares craneanos VII, IX, X, XI y XII, y ganglio simpático cervical superior) que sea mínimamente invasiva y por lo tanto, presente menos riesgo de lesiones asociadas.

  7. Effects of alpha particles on zebrafish embryos

    International Nuclear Information System (INIS)

    Yum, E.H.W.; Choi, V.W.Y.; Yu, K.N.; Li, V.W.T.; Cheng, S.H.

    2008-01-01

    Full text: Ionizing radiation such as X-ray and alpha particles can damage cellular macromolecules, which can lead to DNA single- and double-strand breaks. In the present work, we studied the effects of alpha particles on dechorionated zebrafish embryos. Thin polyallyldiglycol carbonate (PADC) films with a thickness of 16 μm were prepared from commercially available PADC films (with thickness of 100 μm) by chemical etching and used as support substrates for holding zebrafish embryos for alpha-particle irradiation. These films recorded alpha-particle hit positions, quantified the number and energy of alpha particles actually incident on the embryo cells, and thus enabled the calculation of the dose absorbed by the embryo cells. Irradiation was made at 1.25 hours post fertilization (hpf) with various absorbed dose. TdT-mediated dUTP Nick-End Labeling (TUNEL) assay was performed on the embryos at different time stages after irradiation. Marked apoptosis was detected only in embryos at earlier time stages. The results showed that DNA double-strand break during zebrafish embryogenesis can be induced by alpha-particle irradiation, which suggests that zebrafish is a potential model for assessing the effects of alpha-particle radiation

  8. Cortical Alpha Activity in Schizoaffective Patients

    Directory of Open Access Journals (Sweden)

    Mahdi Moeini

    2017-02-01

    Full Text Available Objective: Electrophysiological studies have identified abnormal oscillatory activities in the cerebral cortex in schizophrenia and mood disorders. Biological and pathophysiological evidence suggests specific deficits in serotonin (5-HT receptor function in schizoaffective disorder (SA, a clinical syndrome with characteristics of both schizophrenia and bipolar disorder. This study investigated alpha oscillations in patients with SA.Method: Electroencephalography was used to measure ongoing and evoked alpha oscillations in 38 adults meeting Diagnostic and Statistical Manual of Mental Disorders–Fourth Edition (DSM–IV criteria for SA, and in 39 healthy controls.Results: Spontaneous alpha power of the participants with SA was significantly lower than that of healthy participants [F (1, 75 = 8.81, P < 0.01]. Evoked alpha activity was also decreased in SA compared to controls [F (1, 75 = 5.67, P = 0.025].Conclusion: A strong reduction of alpha power in the posterior regions may reflect abnormality in the thalamocortical circuits. It is shown that hypoxia and reduced cerebral blood flow is associated with reduced alpha activity among different regions of the brain. Therefore, it can be concluded that greatly decreased alpha activity, particularly in centro-parietal and occipital regions, is related to SA symptoms such as hallucinations.

  9. Lucid dreaming and alpha activity: a preliminary report.

    Science.gov (United States)

    Ogilvie, R D; Hunt, H T; Tyson, P D; Lucescu, M L; Jeakins, D B

    1982-12-01

    10 good dream recallers spent 2 nights in the sleep lab during which they were awakened 4 times per night from REM sleep, twice during their highest alpha activity in REM, and twice during low REM alpha. 5 were given alpha feedback training prior to sleep onset. Arousals from high alpha REM sleep yielded significantly higher lucidity ratings. Alpha feedback had no effect upon lucidity or REM alpha levels. Similarities between lucid dreams and meditative phenomena are discussed.

  10. Hemophilia B with mutations at glycine-48 of factor IX exhibited delayed activation by the factor VIIa-tissue factor complex.

    Science.gov (United States)

    Wu, P C; Hamaguchi, N; Yu, Y S; Shen, M C; Lin, S W

    2000-10-01

    Gly-48 is in the conserved DGDQC sequence (residues 47-51 of human factor IX) of the first EGF (EGF-1)-like domain of factor IX. The importance of the Gly-48 is manifested by two hemophilia B patients; factor IXTainan and factor IXMalmo27, with Gly-48 replaced by arginine (designated IXG48R) and valine (IXG48V), respectively. Both patients were CRM+ exhibiting mild hemophilic episodes with 25% (former) and 19% (latter) normal clotting activities. We characterize both factor IX variants to show the roles of Gly-48 and the conservation of the DGDQC sequence in factor IX. Purified plasma and recombinant factor IX variants exhibited approximately 26%-27% normal factor IX's clotting activities with G48R or G48V mutation. Both variants depicted normal quenching of the intrinsic fluorescence by increasing concentrations of calcium ions and Tb3+, indicating that arginine and valine substitution for Gly-48 did not perturb the calcium site in the EGF-1 domain. Activation of both mutants by factor XIa appeared normal. The reduced clotting activity of factors IXG48R and IXG48V was attributed to the failure of both mutants to cleavage factor X: in the presence of only phospholipids and calcium ions, both mutants showed a 4 to approximately 7-fold elevation in Km, and by adding factor VIIIa to the system, although factor VIIIa potentiated the activation of factor X by the mutants factor IXaG48R and factor IXaG48V, a 2 to approximately 3-fold decrease in the catalytic function was observed with the mutant factor IXa's, despite that they bound factor VIIIa on the phospholipid vesicles with only slightly reduced affinity when compared to wild-type factor IXa. The apparent Kd for factor VIIIa binding was 0.83 nM for normal factor IXa, 1.74 nM for IXaG48R and 1.4 nM for IXaG48V. Strikingly, when interaction with the factor VIIa-TF complex was examined, both mutations were barely activated by the VIIa-TF complex and they also showed abnormal interaction with VIIa-TF in bovine

  11. Kinetics and comparison of δ-aminolevulinic-acid-induced endogenous protoporphyrin-IX in single cell by steady state and multiphoton fluorescence imaging

    Science.gov (United States)

    Ganesan, Singaravelu; Elangovan, Masilamani; Periasamy, Ammasi

    2001-04-01

    Photodynamic Therapy has emerged as a new modality in the treatment of various nonmalignant and malignant diseases. It involves the systemic administration of tumor specific photo-sensitizers with the subsequent application of visible light. This combination causes the generation of cytotoxic species, which damage sensitive targets, producing cell injury and tumor destruction. Although, photofrin is the only photosensitizer currently approved for PDT and tumor detection, its concomitant cutaneous photosensitization poses a significant problem. Hence, δ-aminoleuvulinic acid (δ-ALA) a precursor for the endogenous production of Protoporphyrin IX, through heme biosynthesis pathway, has gained significant importance in the Photodynamic Therapy. Though δ-ALA is present naturally in the cells, exogenous δ-ALA helps to synthesis more of PpIX in the tumor cells, as the fast growing tumor cells take up the administered δ-ALA more than the normal cells. Based on these facts, many invasive studies have been reported on the kinetics of δ-ALA at cellular level by chemical extraction of PpIX from the cells. In the present study we have studied the kinetics of δ-ALA induced PpIX fluorescence from Hela cells by perchloric/Methanol extraction method. However, the amount of PpIX synthesized in the cells at different point of incubation time by noninvasive methods has not been reported. Hence we have also used a noninvasive technique of measuring the kinetics δ-ALA induced PPIX fluorescence from Hela, an epithelial cell derived from human cervical cancer by both single photon (steady state) and multi photon excitation. From the studies it is observed that the δ-ALA induced PpIX is more at 2 hours incubation time for 2 mM of δ-ALA concentration. Further, it is observed that with steady state fluorescence imaging method, the excitation light itself cause the Photodynamic damage, due to the prolonged exposure of the cells than in multi photon excitation, leading to the rounding

  12. The Application of Lean Thinking Principles and Kaizen Practices for the Successful Development and Implementation of the Ares I-X Flight Test Rocket and Mission

    Science.gov (United States)

    Askins, B. R.; Davis, S. R.; Heitzman, K. S.; Olsen, R. A.

    2011-01-01

    On October 28, 2009 the Ares I-X flight test rocket launched from Kennedy Space Center and flew its suborbital trajectory as designed. The mission was successfully completed as data from the test, and associated development activities were analyzed, transferred to stakeholders, and well documented. A positive lesson learned from Ares I-X was that the application of lean thinking principles and kaizen practices was very effective in streamlining development activities. Ares I-X, like other historical rocket development projects, was hampered by technical, cost, and schedule challenges and if not addressed boldly could have resulted in cancellation of the test. The mission management team conducted nine major meetings, referred to as lean events, across its elements to assess plans, procedures, processes, requirements, controls, culture, organization, use of resources, and anything that could be changed to optimize schedule or reduce risk. The preeminent aspect of the lean events was the focus on value added activities and the removal or at least reduction in non-value added activities. Trained Lean Six Sigma facilitators assisted the Ares I-X developers in conducting the lean events. They indirectly helped formulate the mission s own unique methodology for assessing schedule. A core team was selected to lead the events and report to the mission manager. Each activity leveraged specialized participants to analyze the subject matter and its related processes and then recommended alternatives and solutions. Stakeholders were the event champions. They empowered and encouraged the team to succeed. The keys to success were thorough preparation, honest dialog, small groups, adherence to the Ares I-X ground rules, and accountability through disciplined reporting and tracking of actions. This lean event formula was game-changing as demonstrated by Ares I-X. It is highly recommended as a management tool to help develop other complex systems efficiently. The key benefits for

  13. Anomalous atomic volume of alpha-Pu

    DEFF Research Database (Denmark)

    Kollar, J.; Vitos, Levente; Skriver, Hans Lomholt

    1997-01-01

    We have performed full charge-density calculations for the equilibrium atomic volumes of the alpha-phase light actinide metals using the local density approximation (LDA) and the generalized gradient approximation (GGA). The average deviation between the experimental and the GGA atomic radii is 1.......3%. The comparison between the LDA and GGA results show that the anomalously large atomic volume of alpha-Pu relative to alpha-Np can be ascribed to exchange-correlation effects connected with the presence of low coordinated sites in the structure where the f electrons are close to the onset of localization...

  14. Alpha spectral analysis via artificial neural networks

    International Nuclear Information System (INIS)

    Kangas, L.J.; Hashem, S.; Keller, P.E.; Kouzes, R.T.; Troyer, G.L.

    1994-10-01

    An artificial neural network system that assigns quality factors to alpha particle energy spectra is discussed. The alpha energy spectra are used to detect plutonium contamination in the work environment. The quality factors represent the levels of spectral degradation caused by miscalibration and foreign matter affecting the instruments. A set of spectra was labeled with a quality factor by an expert and used in training the artificial neural network expert system. The investigation shows that the expert knowledge of alpha spectra quality factors can be transferred to an ANN system

  15. Production of alpha 1-proteinase inhibitor (human).

    Science.gov (United States)

    Hein, R H; Van Beveren, S M; Shearer, M A; Coan, M H; Brockway, W J

    1990-03-01

    A method for large scale isolation of alpha 1-proteinase inhibitor (alpha 1-PI) is described. This method employs waste Cohn Fraction IV-1 as the starting material and involves fractional precipitation with polyethylene glycol followed by ion exchange chromatography on diethylaminoethanol (DEAE)-Sepharose. The process also incorporates a ten hour, at 60 degrees C, heat-treatment step to reduce or eliminate the risk of transmission of viral disease. The final product, having a purity of approximately 60%, is freeze-dried. This preparation behaves almost identically to the alpha 1-PI in plasma and is suitable for replacement therapy in hereditary emphysema.

  16. Measurements of $\\alpha_s$ in $pp$ Collisions at the LHC

    CERN Document Server

    Warburton, Andreas; The ATLAS collaboration

    2015-01-01

    The coupling of the strong force, $\\alpha_s$, is deemed to be a fundamental parameter of Nature, and, beyond the quark masses, constitutes the only free parameter in the QCD Lagrangian. Provided is an overview of CERN Large Hadron Collider (LHC) measurements of $\\alpha_s(M_Z)$ evaluated at the $Z$-boson mass and of the running of $\\alpha_s(Q)$ as a function of energy-momentum transfer $Q$. The measurements were performed by the ATLAS and CMS Collaborations using proton-proton ($pp$) collisions with centre-of-mass energies of 7 TeV and data samples with time-integrated luminosities of up to 5 fb$^{-1}$. Four different categories of observable were used in the described extractions of $\\alpha_s$: inclusive jet cross sections, 3-jet to 2-jet inclusive cross-section ratios, 3-jet mass cross sections, and top-quark pair production cross sections. These results, which include the first NNLO measurement of $\\alpha_s$ at a hadron collider and the first determinations of $\\alpha_s$ at energy scales above 1 TeV, are co...

  17. A Quantitative Electrochemiluminescence Assay for Clostridium perfringens alpha toxin

    National Research Council Canada - National Science Library

    Merrill, Gerald A; Rivera, Victor R; Neal, Dwayne D; Young, Charles; Poli, Mark A

    2006-01-01

    .... Biotinylated antibodies to C. perfringens alpha toxin bound to streptavidin paramagnetic beads specifically immunoadsorbed soluble sample alpha toxin which subsequently selectively immunoadsorbed ruthenium (Ru...

  18. Establishing Approaches to Modeling the Ares I-X and Ares I Roll Control System with Free-stream Interaction

    Science.gov (United States)

    Pao, S. Paul; Deere, Karen A.; Abdol-Hamid, Khales S.

    2011-01-01

    Approaches were established for modeling the roll control system and analyzing the jet interactions of the activated roll control system on Ares-type configurations using the USM3D Navier-Stokes solver. Components of the modeling approach for the roll control system include a choice of turbulence models, basis for computing a dynamic equivalence of the real gas rocket exhaust flow in terms of an ideal gas, and techniques to evaluate roll control system performance for wind tunnel and flight conditions. A simplified Ares I-X configuration was used during the development phase of the roll control system modeling approach. A limited set of Navier-Stokes solutions was obtained for the purposes of this investigation and highlights of the results are included in this paper. The USM3D solutions were compared to equivalent solutions at select flow conditions from a real gas Navier- Stokes solver (Loci-CHEM) and a structured overset grid Navier-Stokes solver (OVERFLOW).

  19. Tuning of superconductivity by Ni substitution into noncentrosymmetric ThC o1 -xN ixC2

    Science.gov (United States)

    Grant, T. W.; Cigarroa, O. V.; Rosa, P. F. S.; Machado, A. J. S.; Fisk, Z.

    2017-07-01

    The recently discovered noncentrosymmetric superconductor ThCoC2 was observed to show unusual superconducting behavior with a critical temperature of Tc=2.65 K . Here we investigate the effect of nickel substitution on the superconducting state in ThC o1 -xN ixC2 . Magnetization, resistivity, and heat capacity measurements demonstrate Ni substitution has a dramatic effect with critical temperature increased up to Tc=12.1 K for x =0.4 Ni concentration, which is a rather high transition temperature for a noncentrosymmetric superconductor. In addition, the unusual superconducting characteristics observed in pure ThCoC2 appear to be suppressed or tuned with Ni substitution towards a more conventional fully gapped superconductor.

  20. Proceedings of XV Workshop on Nuclear Physics. IX International Symposium on Nuclear and Related Techniques. WONP-NURT 2015

    International Nuclear Information System (INIS)

    2015-02-01

    This year 2015, the XV Workshop on Nuclear Physics and IX International Symposium on Nuclear and Related Techniques, WONP-NURT 2015 organized by the Center of Technological Applications and Nuclear Development from 9 to 13 February at the National Museum of Fine Arts. NURT is one of the key Cuban scientific meetings since 1997 dealing with the peaceful applications of nuclear techniques in several domains of the society. WONP and NURT provide an unique opportunity for the national and international scientific community to meet outstanding researchers and discuss current trends in several areas of theoretical, experimental and applied nuclear physics and related topics. The papers submitted to this event are presented in this CD-ROM.

  1. Identification of the chlE gene encoding oxygen-independent Mg-protoporphyrin IX monomethyl ester cyclase in cyanobacteria.

    Science.gov (United States)

    Yamanashi, Kaori; Minamizaki, Kei; Fujita, Yuichi

    2015-08-07

    The fifth ring (E-ring) of chlorophyll (Chl) a is produced by Mg-protoporphyrin IX monomethyl ester (MPE) cyclase. There are two evolutionarily unrelated MPE cyclases: oxygen-independent (BchE) and oxygen-dependent (ChlA/AcsF) MPE cyclases. Although ChlA is the sole MPE cyclase in Synechocystis PCC 6803, it is yet unclear whether BchE exists in cyanobacteria. A BLAST search suggests that only few cyanobacteria possess bchE. Here, we report that two bchE candidate genes from Cyanothece strains PCC 7425 and PCC 7822 restore the photosynthetic growth and bacteriochlorophyll production in a bchE-lacking mutant of Rhodobacter capsulatus. We termed these cyanobacterial bchE orthologs "chlE." Copyright © 2015 Elsevier Inc. All rights reserved.

  2. SCCmec Type IX Element in Methicillin Resistant Staphylococcusaureusspa Type t337 (CC9) Isolated from Pigs and Pork in Thailand

    DEFF Research Database (Denmark)

    Vestergaard, Martin; Cavaco, Lina M; Sirichote, Pantip

    2012-01-01

    were screened using a microarray. Five of the pork samples and six pig nasal swabs were positive for MRSA. All 11 isolates belonged to spa type t337 but showed diversity in antimicrobial resistance patterns and PFGE profiles. Additionally, the isolates were sequence-typed; ST9, ST2136, ST2278 belonging...... to the clonal complex; CC9. All isolates harbored SCCmec IX and were resistant to 7 out of 14 tested antimicrobials; additional resistances to all antimicrobials tested were found in some of the pork and pig isolates and 1 pork isolate was resistant to 13 antimicrobials tested. Microarray analysis identified......Methicillin resistant Staphylococcusaureus (MRSA) have emerged among livestock in several countries. In this study, we describe the results of a screening performed in pigs and raw pork samples in Thailand. Ten pork samples and 15 nasal swabs from pigs were collected from 2 markets and 1 pig farm...

  3. Comparison of invitro cytotoxic and genotoxic potential of glass ionomer cement type IX on human lymphocytes before and after electron beam irradiation

    International Nuclear Information System (INIS)

    Hegde, Mithra N.; Brijesh; Shetty, Shilpa S.; Hegde, Nidarsh D.; Suchetha Kumari; Sanjeev, Ganesh

    2013-01-01

    Glass ionomer cements are widely used in dentistry as an adhesive restorative materials. However, the results of cytotoxicity and genotoxicity studies using these materials are inconclusive in literature. The aim of this study was to examine the cytotoxic and genotoxic potential of glass ionomer cement type IX available commercially before and after irradiation. Glass ionomer cement type IX was obtained commercially. Samples were prepared as per the ISO standard size of 25x2x2 mm using polytetrafluoroethylene teflon mould and divided into two groups - non irradiated and irradiated groups. The samples in radiated category were exposed to 10 KGy of electron beam irradiation at Microtron Centre, Mangalore University, Mangalore, India. For hemolysis assay, the samples were immersed in phosphate buffer saline and incubated at 370℃ for 24 hrs, 7 days and 14 days. 200 μL of 24 hr material extract was mixed with human peripheral blood lymphocyte tested for comet assay by single cell DNA comet assay and apoptosis by DNA diffusion assay. Hemolytic activity of non irradiated Glass ionomer cement type IX after 24 hrs, 7 days and 14 days was 78.18±10.13, 32.57±12.28, 38.56±4.68 respectively whereas hemolytic activity of irradiated Glass ionomer cement type IX after 24 hrs, 7 days and 14 days was 58.90±2.28, 35.04±1.09 and 34.26±7.71 respectively. The irradiation of Glass ionomer cement type IX with 10 KGy dose of electron beam irradiation did not show significant increase in the frequency of DNA damage when compared to that of the nonirradiated group. Apoptotic index did not show much difference between non-irradiated and irradiated groups. Taken together, we conclude that some components of glass ionomer cements show both genotoxic and cytotoxic effects. (author)

  4. Increased expression of mitochondrial benzodiazepine receptors following low-level light treatment facilitates enhanced protoporphyrin IX production in glioma-derived cells in vitro

    Science.gov (United States)

    Bisland, S. K.; Hassanali, N. S.; Johnson, C.; Wilson, B. C.

    2007-02-01

    This study investigates whether low level light treatment (LLLT) can enhance the expression of Peripheral-type mitochondrial benzodiazepine receptors (PBRs) on the glioma-derived tumour cell line, CNS-1, and by doing so promote the synthesis of protoporphyrin IX (PpIX) and increase the photodynamic therapy (PDT)-induced cell kill using 5-aminolevulinic acid (ALA). The endogenous photosensitizer, (PpIX) and related metabolites including coproporphyrin III are known to traffic via the PBRs on the outer mitochondrial membrane on their passage into or out of the mitochondria. Astrocyte-derived cells within the brain express PBRs, while neurons express the central-type of benzodiazepine receptor. CNS-1 cells were exposed to a range of differing low-level light protocols immediately prior to PDT. LLLT involved using broad-spectrum light or monochromatic laser light specific to 635 or 905 nm wavelength. Cells (5μ10 5) were exposed to a range of LLLT doses (0, 1 or 5 J/cm2) using a fixed intensity of 10 mW/cm2 and subsequently harvested for cell viability, immunofluorescence or western blot analysis of PBR expression. The amount of PpIX within the cells was determined using chemical extraction techniques. Results confirm the induction of PBR following LLLT is dependent on the dose and wavelength of light used. Broadspectrum light provided the greatest cell kill following PDT, although LLLT with 635 nm or 905 nm also increased cell kill as compared to PDT alone. All LLLT regimens increased PBR expression compared to controls with corresponding increases in PpIX production. These data suggest that by selectively increasing PBR expression in tumour cells, LLLT may facilitate enhanced cell kill using ALA-PDT without damaging surrounding normal brain.

  5. FOREWORD: IX International Symposium on Radiation from Relativistic Electrons in Periodic Structures (RREPS-2011)

    Science.gov (United States)

    Potylitsyn, Alexander; Karataev, Pavel

    2012-05-01

    This volume contains papers presented at the IX International Symposium on Radiation from Relativistic Electrons in Periodic Structures (RREPS'11) which was held at Royal Holloway, University of London on September 12-16, Egham, United Kingdom. The symposium was organized jointly by Royal Holloway, University of London and Tomsk Polytechnic University, Tomsk, Russia. RREPS is a biennial series of symposia founded in September 1993 as an initiative of the Nuclear Physics Institute at Tomsk Polytechnic University. The intention was to strengthen the basic and applied research focused on radiation from relativistic electrons in condensed media, particularly from natural and artificial periodic structures, and to review the research activity in this area. Since then, the symposium has developed into a forum attracting young scientists from different areas of research and from many countries. Previous successful symposia were held at Tomsk, Russia (1993, 1995, 1997, 2003), Lake Baikal, Russia (1999), Lake Aiya, Altai, Russia (2001), Czech Technical University in Prague, Czech Republic (2007) and Zvenigorod, Moscow region, Russia (2009). As an outcome of the symposia the conference proceedings have been published in Nuclear Instruments and Methods in Physics Research, Section B (Vol. 145 No 1-2, October 1998; Vol. 173 No 1-2, January 2001; Vol. 201 No 1 January 2003; Vol. 227 No 1-2, January 2005; Vol. 266 No 17, September 2008) and Journal of Physics: Conference Series (Vol. 236, June 2010). The purpose of the present RREPS'11 symposium was to review the up-to-date situation in the area of electromagnetic radiation generated by relativistic charged particles in condensed media, and to discuss the research strategy for the near future. Nowadays, electromagnetic radiation studies cover electron energies from a few MeV up to hundreds of GeV in many laboratories throughout the world. The goal is to study the physics of the generation of various kinds of radiation and their

  6. Neutron-induced alpha radiography

    International Nuclear Information System (INIS)

    Pereira, Marco Antonio Stanojev

    2008-01-01

    A new radiography technique to inspect thin samples was developed. Low energy alpha particles, generated by a boron based screen under thermal neutron irradiation, are used as penetrating radiation. The solid state nuclear track detector CR-39 has been used to register the image. The interaction of the α - particles with the CR-39 gives rise to damages which under an adequate chemical etching became tracks the basic units forming the image. A digital system was developed for data acquisition and data analysis as well as for image processing. The irradiation and etching conditions to obtain the best radiography are 1,3 hours and 25 minutes at 70 deg C respectively. For such conditions samples having 10 μm in thickness can be inspected with a spatial resolution of 32 μm. The use of the digital system has reduced the time spent for data acquisition and data analysis and has improved the radiography image visualization. Furthermore, by using the digital system, it was possible to study several new parameters regarding the tracks which are very important to understand and study the image formation theory in solid state nuclear track detectors, the one used in this thesis. Some radiography images are also shown which demonstrate the potential of the proposed radiography technique. When compared with the other radiography techniques already in use to inspect thin samples, the present one developed in the present paper allows a smaller time to obtain the image, it is not necessary to handle liquid radioactive substances, the detector is insensitive to β, γ, X-ray and visible light. (author)

  7. Liquid scintillation alpha particle spectrometry. Progress report

    International Nuclear Information System (INIS)

    Bell, L.L.; Hakooz, S.A.; Johnson, L.O.; Nieschmidt, E.B.; Meikrantz, D.H.

    1979-12-01

    Objective to develop a technique whereby Pu may be put into solution, extracted by solvent extraction into a suitable extractive scintillant and subsequently counted. Presented here are results of attempts to separate beta and alpha activities through pulse shape discrimination. A qualitative discussion is given which yields alpha particle peak widths, resolution and response. The detection efficiency for alpha particles in a liquid scintillant is 100%. Present detection sensitivities of the equipment being used are: 4.5 x 10 -6 μCi (100 s), 1.2 x 10 -6 μCi (1000 s), and 4.0 x 10 -7 μCi (10,000 s) at the 3 sigma level. The detectability of a particular alpha-emitting species is strongly dependent upon the population of other species. The ability to discriminate depends upon the system resolution. 14 figures, 2 tables

  8. NEW APPROACHES TO CONFINED ALPHA DIAGNOSTICS

    Energy Technology Data Exchange (ETDEWEB)

    FISHER,R.K

    2004-04-01

    Three new approaches to obtain information on the confined fast alphas in International Thermonuclear Experimental Reactor (ITER) are proposed. The first technique measures the energetic charge exchange (CX) neutrals that result from the alpha collision-induced knock-on fuel ion tails undergoing electron capture on the MeV D neutral beams planned for heating and current drive. The second technique measures the energetic knock-on neutron tail due to alphas using the lengths of the proton recoil tracks produced by neutron collisions in nuclear emulsions. The range of the 14 to 20 MeV recoil protons increases by {approx}140 microns per MeV. The third approach would measure the CX helium neutrals resulting from confined alphas capturing two electrons in the ablation cloud surrounding a dense gas jet that has been proposed for disruption mitigation in ITER.

  9. NEW APPROACHES TO CONFINED ALPHA DIAGNOSTICS

    International Nuclear Information System (INIS)

    FISHER, R.K.

    2004-01-01

    Three new approaches to obtain information on the confined fast alphas in International Thermonuclear Experimental Reactor (ITER) are proposed. The first technique measures the energetic charge exchange (CX) neutrals that result from the alpha collision-induced knock-on fuel ion tails undergoing electron capture on the MeV D neutral beams planned for heating and current drive. The second technique measures the energetic knock-on neutron tail due to alphas using the lengths of the proton recoil tracks produced by neutron collisions in nuclear emulsions. The range of the 14 to 20 MeV recoil protons increases by ∼140 microns per MeV. The third approach would measure the CX helium neutrals resulting from confined alphas capturing two electrons in the ablation cloud surrounding a dense gas jet that has been proposed for disruption mitigation in ITER

  10. Strichartz estimates on $alpha$-modulation spaces

    Directory of Open Access Journals (Sweden)

    Weichao Guo

    2013-05-01

    Full Text Available In this article, we consider some dispersive equations, including Schrodinger equations, nonelliptic Schrodinger equations, and wave equations. We develop some Strichartz estimates in the frame of alpha-modulation spaces.

  11. Targeted alpha therapy: Applications and current status

    Energy Technology Data Exchange (ETDEWEB)

    Bruchertseifer, Frank, E-mail: frank.bruchertseifer@ec.europa.eu [European Commission, Joint Research Centre, Karlsruhe (Germany)

    2017-07-01

    Full text: The field of targeted alpha therapy has been developed rapidly in the last decade. Besides {sup 223}Ra, {sup 211}At and {sup 212}Pb/{sup 212}Bi the alpha emitters {sup 225}Ac and {sup 213}Bi are promising therapeutic radionuclides for application in targeted alpha therapy of cancer and infectious diseases. The presentation will give a short overview about the current clinical treatments with alpha emitting radionuclides and will place an emphasis on the most promising clinical testing of peptides and antibodies labelled with {sup 225}Ac and {sup 213}Bi for treatment of metastatic castration-resistant prostate cancer patients with glioma and glioblastoma multiform, PSMA-positive tumor phenotype and bladder carcinoma in situ. (author)

  12. Calibration of alpha surface contamination monitor

    International Nuclear Information System (INIS)

    Freitas, I.S.M. de; Goncalez, O.L.

    1990-01-01

    In this work, the results, as well as the methodology, of the calibration of an alpha surface contamination monitor are presented. The calibration factors are obtained by least-squares fitting with effective variance. (author)

  13. Solar Imagery - Chromosphere - H-Alpha

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Collection includes a variety of H-alpha photographic datasets contributed by a number of national and private solar observatories located worldwide. Solar...

  14. Energy dependence of event shapes and of $\\alpha_s$ at LEP 2

    CERN Document Server

    Abreu, P; Adye, T; Adzic, P; Albrecht, Z; Alderweireld, T; Alekseev, G D; Alemany, R; Allmendinger, T; Allport, P P; Almehed, S; Amaldi, Ugo; Amapane, N; Amato, S; Anassontzis, E G; Andersson, P; Andreazza, A; Andringa, S; Antilogus, P; Apel, W D; Arnoud, Y; Åsman, B; Augustin, J E; Augustinus, A; Baillon, Paul; Bambade, P; Barão, F; Barbiellini, Guido; Barbier, R; Bardin, Dimitri Yuri; Barker, G; Baroncelli, A; Battaglia, Marco; Baubillier, M; Becks, K H; Begalli, M; Behrmann, A; Beillière, P; Belokopytov, Yu A; Belous, K S; Benekos, N C; Benvenuti, Alberto C; Bérat, C; Berggren, M; Bertini, D; Bertrand, D; Besançon, M; Bianchi, F; Bigi, M; Bilenky, S M; Bizouard, M A; Bloch, D; Blom, H M; Bonesini, M; Bonivento, W; Boonekamp, M; Booth, P S L; Borgland, A W; Borisov, G; Bosio, C; Botner, O; Boudinov, E; Bouquet, B; Bourdarios, C; Bowcock, T J V; Boyko, I; Bozovic, I; Bozzo, M; Branchini, P; Brenke, T; Brenner, R A; Brückman, P; Brunet, J M; Bugge, L; Buran, T; Burgsmüller, T; Buschbeck, Brigitte; Buschmann, P; Cabrera, S; Caccia, M; Calvi, M; Camporesi, T; Canale, V; Carena, F; Carroll, L; Caso, Carlo; Castillo-Gimenez, M V; Cattai, A; Cavallo, F R; Chabaud, V; Chapkin, M M; Charpentier, P; Chaussard, L; Checchia, P; Chelkov, G A; Chierici, R; Chliapnikov, P V; Chochula, P; Chorowicz, V; Chudoba, J; Cieslik, K; Collins, P; Contri, R; Cortina, E; Cosme, G; Cossutti, F; Cowell, J H; Crawley, H B; Crennell, D J; Crépé, S; Crosetti, G; Cuevas-Maestro, J; Czellar, S; Davenport, Martyn; Da Silva, W; Deghorain, A; Della Ricca, G; Delpierre, P A; Demaria, N; De Angelis, A; de Boer, Wim; De Clercq, C; De Lotto, B; De Min, A; De Paula, L S; Dijkstra, H; Di Ciaccio, Lucia; Dolbeau, J; Doroba, K; Dracos, M; Drees, J; Dris, M; Duperrin, A; Durand, J D; Eigen, G; Ekelöf, T J C; Ekspong, Gösta; Ellert, M; Elsing, M; Engel, J P; Erzen, B; Espirito-Santo, M C; Falk, E; Fanourakis, G K; Fassouliotis, D; Fayot, J; Feindt, Michael; Fenyuk, A; Ferrari, P; Ferrer, A; Ferrer-Ribas, E; Ferro, F; Fichet, S; Firestone, A; Flagmeyer, U; Föth, H; Fokitis, E; Fontanelli, F; Franek, B J; Frodesen, A G; Frühwirth, R; Fulda-Quenzer, F; Fuster, J A; Galloni, A; Gamba, D; Gamblin, S; Gandelman, M; García, C; Gaspar, C; Gaspar, M; Gasparini, U; Gavillet, P; Gazis, E N; Gelé, D; Ghodbane, N; Gil, I; Glege, F; Gokieli, R; Golob, B; Gómez-Ceballos, G; Gonçalves, P; González-Caballero, I; Gopal, Gian P; Gorn, L; Górski, M; Guz, Yu; Gracco, Valerio; Grahl, J; Graziani, E; Green, C; Grimm, H J; Gris, P; Grosdidier, G; Grzelak, K; Günther, M; Guy, J; Hahn, F; Hahn, S; Haider, S; Hallgren, A; Hamacher, K; Hansen, J; Harris, F J; Hedberg, V; Heising, S; Hernández, J J; Herquet, P; Herr, H; Hessing, T L; Heuser, J M; Higón, E; Holmgren, S O; Holt, P J; Hoorelbeke, S; Houlden, M A; Hrubec, Josef; Huet, K; Hughes, G J; Hultqvist, K; Jackson, J N; Jacobsson, R; Jalocha, P; Janik, R; Jarlskog, C; Jarlskog, G; Jarry, P; Jean-Marie, B; Johansson, E K; Jönsson, P E; Joram, C; Juillot, P; Kapusta, F; Karafasoulis, K; Katsanevas, S; Katsoufis, E C; Keränen, R; Kersevan, Borut P; Khomenko, B A; Khovanskii, N N; Kiiskinen, A P; King, B J; Kinvig, A; Kjaer, N J; Klapp, O; Klein, H; Kluit, P M; Kokkinias, P; Koratzinos, M; Kostyukhin, V; Kourkoumelis, C; Kuznetsov, O; Krammer, Manfred; Kriznic, E; Krstic, J; Krumshtein, Z; Kubinec, P; Kurowska, J; Kurvinen, K L; Lamsa, J; Lane, D W; Langefeld, P; Lapin, V; Laugier, J P; Lauhakangas, R; Leder, Gerhard; Ledroit, F; Lefébure, V; Leinonen, L; Leisos, A; Leitner, R; Lemonne, J; Lenzen, Georg; Lepeltier, V; Lesiak, T; Lethuillier, M; Libby, J; Liko, D; Lipniacka, A; Lippi, I; Lörstad, B; Loken, J G; Lopes, J H; López, J M; López-Fernandez, R; Loukas, D; Lutz, P; Lyons, L; MacNaughton, J N; Mahon, J R; Maio, A; Malek, A; Malmgren, T G M; Maltezos, S; Malychev, V; Mandl, F; Marco, J; Marco, R P; Maréchal, B; Margoni, M; Marin, J C; Mariotti, C; Markou, A; Martínez-Rivero, C; Martínez-Vidal, F; Martí i García, S; Mastroyiannopoulos, N; Matorras, F; Matteuzzi, C; Matthiae, Giorgio; Masik, J; Mazzucato, F; Mazzucato, M; McCubbin, M L; McKay, R; McNulty, R; McPherson, G; Meroni, C; Meyer, W T; Migliore, E; Mirabito, L; Mitaroff, Winfried A; Mjörnmark, U; Moa, T; Moch, M; Møller, R; Mönig, K; Monge, M R; Moreau, X; Morettini, P; Morton, G A; Müller, U; Münich, K; Mulders, M; Mulet-Marquis, C; Muresan, R; Murray, W J; Muryn, B; Myatt, Gerald; Myklebust, T; Naraghi, F; Nassiakou, M; Navarria, Francesco Luigi; Navas, S; Nawrocki, K; Negri, P; Némécek, S; Neufeld, N; Neumeister, N; Nicolaidou, R; Nielsen, B S; Nikolenko, M; Nomokonov, V P; Normand, Ainsley; Nygren, A; Obraztsov, V F; Olshevskii, A G; Onofre, A; Orava, Risto; Orazi, G; Österberg, K; Ouraou, A; Paganoni, M; Paiano, S; Pain, R; Paiva, R; Palacios, J; Palka, H; Papadopoulou, T D; Papageorgiou, K; Pape, L; Parkes, C; Parodi, F; Parzefall, U; Passeri, A; Passon, O; Pegoraro, M; Peralta, L; Pernicka, Manfred; Perrotta, A; Petridou, C; Petrolini, A; Phillips, H T; Pierre, F; Pimenta, M; Piotto, E; Podobnik, T; Pol, M E; Polok, G; Poropat, P; Pozdnyakov, V; Privitera, P; Pukhaeva, N; Pullia, Antonio; Radojicic, D; Ragazzi, S; Rahmani, H; Ratoff, P N; Read, A L; Rebecchi, P; Redaelli, N G; Regler, Meinhard; Reid, D; Reinhardt, R; Renton, P B; Resvanis, L K; Richard, F; Rídky, J; Rinaudo, G; Røhne, O M; Romero, A; Ronchese, P; Rosenberg, E I; Rosinsky, P; Roudeau, Patrick; Rovelli, T; Royon, C; Ruhlmann-Kleider, V; Ruiz, A; Saarikko, H; Sacquin, Yu; Sadovskii, A; Sajot, G; Salt, J; Sampsonidis, D; Sannino, M; Schneider, H; Schwemling, P; Schwering, B; Schwickerath, U; Schyns, M A E; Scuri, F; Seager, P; Sedykh, Yu; Segar, A M; Sekulin, R L; Shellard, R C; Sheridan, A; Siebel, M; Simard, L C; Simonetto, F; Sissakian, A N; Smadja, G; Smirnov, N; Smirnova, O G; Smith, G R; Sopczak, André; Sosnowski, R; Spassoff, Tz; Spiriti, E; Sponholz, P; Squarcia, S; Stanescu, C; Stanic, S; Stevenson, K; Stocchi, A; Strub, R; Stugu, B; Szczekowski, M; Szeptycka, M; Tabarelli de Fatis, T; Tegenfeldt, F; Terranova, F; Thomas, J; Timmermans, J; Tinti, N; Tkatchev, L G; Todorova-Nová, S; Tomaradze, A G; Tomé, B; Tonazzo, A; Tortora, L; Tranströmer, G; Treille, D; Tristram, G; Trochimczuk, M; Troncon, C; Tsirou, A L; Turluer, M L; Tyapkin, I A; Tzamarias, S; Ullaland, O; Uvarov, V; Valenti, G; Vallazza, E; Van der Velde, C; van Apeldoorn, G W; van Dam, P; Van Doninck, W K; Van Eldik, J; Van Lysebetten, A; Van Vulpen, I B; Vassilopoulos, N; Vegni, G; Ventura, L; Venus, W A; Verbeure, F; Verlato, M; Vertogradov, L S; Verzi, V; Vilanova, D; Vitale, L; Vlasov, E; Vodopyanov, A S; Vollmer, C F; Voulgaris, G; Vrba, V; Wahlen, H; Walck, C; Weiser, C; Wicke, D; Wickens, J H; Wilkinson, G R; Winter, M; Witek, M; Wolf, G; Yi, J; Yushchenko, O P; Zaitsev, A; Zalewska-Bak, A; Zalewski, Piotr; Zavrtanik, D; Zevgolatakos, E; Zimin, N I; Zucchelli, G C; Zumerle, G

    1999-01-01

    Infrared and collinear safe event shape distributions and their mean values are determined using the data taken at ve di erent centre of mass energies above $M_Z$ with the DELPHI detector at LEP. From the event shapes, the strong coupling $\\alpha_s$ is extracted in $O(\\alpha^2_s)$, NLLA and a combined scheme using hadronisation corrections evaluated with fragmentation model generators as well as using an analytical power ansatz. Comparing these measurements to those obtained at MZ, the energy dependence (running) of $\\alpha_s$ is accessible. The logarithmic energy slope of the inverse strong coupling is measured to be $d\\alpha_{s}^{-1}/d log(E_{cm}) = 1.39 \\pm 0.34(stat) \\pm 0.17(syst)$, in good agreement with the QCD expectation of 1.27.

  15. Influence of fast alpha diffusion and thermal alpha buildup on tokamak reactor performance

    International Nuclear Information System (INIS)

    Uckan, N.A.; Tolliver, J.S.; Houlberg, W.A.; Attenberger, S.E.

    1988-01-01

    The effect of fast alpha diffusion and thermal alpha accumulation on the confinement capability of a candidate Engineering Test Reactor plasma (Tokamak Ignition/Burn Experimental Reactor) in achieving ignition and steady-state driven operation has been assessed using both global and 1-1/2-dimensional transport models. Estimates are made of the threshold for radial diffusion of fast alphas and thermal alpha buildup. It is shown that a relatively low level of radial transport, when combined with large gradients in the fast alpha density, leads to a significant radial flow with a deleterious effect on plasma performance. Similarly, modest levels of thermal alpha concentration significantly influence the ignition and steady-state burn capability

  16. Measurement of the angle alpha at BABAR

    Energy Technology Data Exchange (ETDEWEB)

    Perez, A.; /Orsay, LAL

    2009-06-25

    The authors present recent measurements of the CKM angle {alpha} using data collected by the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} collider at the SLAC National Accelerator Laboratory, operating at the {Upsilon}(4S) resonance. They present constraints on {alpha} from B {yields} {pi}{pi}, B {yields} {rho}{rho} and B {yields} {rho}{pi} decays.

  17. Improved peak shape fitting in alpha spectra

    OpenAIRE

    POMME Stefaan; CARO MARROYO BELEN

    2014-01-01

    Peak overlap is a recurrent issue ina lpha-particle spectrometry, not only in routine analyses but also in the high-resolution spectra from which reference values for alpha emission probabilities are derived. In this work, improved peak shape formulae are presented for the deconvolution of alpha-particle spectra. They have been implemented as fit functions in a spreadsheet application and optimum fit parameters were searched with built-in optimisation routines. Deconvolution results are shown...

  18. Conceptual design report for alpha waste incinerator

    International Nuclear Information System (INIS)

    1979-04-01

    The Alpha Waste Incinerator, a new facility in the SRP H-Area, will process transuranic or alpha-contaminated combustible solid wastes. It will seal the radioactive ash and scrubbing salt residues in cans for interim storage in drums on site burial ground pads. This report includes objectives, project estimate, schedule, standards and criteria, excluded costs, safety evaluation, energy consumption, environmental assessment, and key drawings

  19. Beteigeuze (Alpha Orionis) und Mintaka (Delta Orionis)

    Science.gov (United States)

    Vollmann, Wolfgang

    2013-02-01

    Magnitude measures transformed to Johnson V of Alpha Orionis (Betelgeuse) and Delta Orionis with a wide-angle lens and DSLR are presented and discussed. Alpha Orionis light changes are shown clearly. The primary and secondary eclipses of Delta Orionis with amplitudes of 0.12 and 0.05 mag respectively are clearly recorded. They occur near phase 0.00 and 0.50 respectively of current elements from VSX (2).

  20. Considering the determination of an alpha value

    International Nuclear Information System (INIS)

    Lorenz, B.

    1987-01-01

    Following an outline of the most important international methods of evaluating an alpha value (the monetary equivalent of one man-sievert) and an approach deemed suitable for use in the GDR, it is recommended that alpha be taken as 30,000 Mark per man-sievert in national cost-benefit analyses. This value should be revisited every five to ten years. (author)

  1. Alpha-root Processes for Derivatives pricing

    OpenAIRE

    Balakrishna, BS

    2010-01-01

    A class of mean reverting positive stochastic processes driven by alpha-stable distributions, referred to here as alpha-root processes in analogy to the square root process (Cox-Ingersoll-Ross process), is a subclass of affine processes, in particular continuous state branching processes with immigration (CBI processes). Being affine, they provide semi-analytical results for the implied term structures as well as for the characteristic exponents for their associated distributions. Their use h...

  2. Self-assembling, dynamic alphaPNAs

    DEFF Research Database (Denmark)

    Nielsen, Peter E

    2009-01-01

    In the recent report published in Science, Ghadiri and coworkers describe dynamic tPNAs, alphaPNA derivatives with a nucleobase attached via a thioester bond that are a step forward toward self-repairing and replicating molecules.......In the recent report published in Science, Ghadiri and coworkers describe dynamic tPNAs, alphaPNA derivatives with a nucleobase attached via a thioester bond that are a step forward toward self-repairing and replicating molecules....

  3. Alpha-emitters for medical therapy workshop

    International Nuclear Information System (INIS)

    Feinendegen, L.E.; McClure, J.J.

    1996-01-01

    A workshop on ''Alpha-Emitters for Medical Therapy'' was held May 30-31, 1996 in Denver Colorado to identify research goals and potential clinical needs for applying alpha-particle emitters and to provide DOE with sufficient information for future planning. The workshop was attended by 36 participants representing radiooncology, nuclear medicine, immunotherapy, radiobiology, molecular biology, biochemistry, radiopharmaceutical chemistry, dosimetry, and physics. This report provides a summary of the key points and recommendations arrived at during the conference

  4. Cytokine vaccination: neutralising IL-1alpha autoantibodies induced by immunisation with homologous IL-1alpha

    DEFF Research Database (Denmark)

    Svenson, M; Hansen, M B; Thomsen, Allan Randrup

    2000-01-01

    High-affinity IgG autoantibodies (aAb) to IL-1alpha are among the most frequently found aAb to cytokines in humans. To establish an animal model with aAb to IL-1alpha, we immunised mice with recombinant murine IL-1alpha. Unprimed and Bacille Calmette-Guérin (BCG)-primed BALB/cA mice were vaccinat...

  5. Liquid-scintillation alpha-detection techniques

    International Nuclear Information System (INIS)

    McKlveen, J.W.; McDowell, W.J.

    1983-01-01

    Accurate, quantitative determinations of alpha-emitting nuclides by conventional plate-counting methods are difficult because of sample self-absorption problems in counting and because of non-reproducible losses in conventional sample separation methods. Liquid scintillation alpha spectrometry offers an attractive with no sample self-absorption or geometry problems and with 100% counting efficiency. Sample preparation may include extraction of the alpha emitter of interest by a specific organic-phase-soluble compound directly into the liquid scintillation counting medium. Detection electronics use energy and pulse-shape discrimination to yield alpha spectra without beta and gamma background interference. Specific procedures have been developed for gross alpha, uranium, plutonium, thorium, and polonium assay. Possibilities for a large number of other applications exist. Accuracy and reproducibility are typically in the 1% range. Backgrounds on the order of 0.01 cpm are readily achievable. The paper will present an overview of liquid scintillation alpha counting techniques and some of the results achieved for specific applications

  6. Structures of G [alpha [superscript i1

    Energy Technology Data Exchange (ETDEWEB)

    Johnston, Christopher A.; Willard, Francis S.; Jezyk, Mark R.; Fredericks, Zoey; Bodor, Erik T.; Jones, Miller B.; Blaesius, Rainer; Watts, Val J.; Harden, T. Kendall; Sondek, John; Ramer, J. Kevin; Siderovski, David P. (Karo Bio); (UNC); (Purdue)

    2010-07-19

    Heterotrimeric G proteins are molecular switches that regulate numerous signaling pathways involved in cellular physiology. This characteristic is achieved by the adoption of two principal states: an inactive, GDP bound state and an active, GTP bound state. Under basal conditions, G proteins exist in the inactive, GDP bound state; thus, nucleotide exchange is crucial to the onset of signaling. Despite our understanding of G protein signaling pathways, the mechanism of nucleotide exchange remains elusive. We employed phage display technology to identify nucleotide state-dependent G{alpha} binding peptides. Herein, we report a GDP-selective G{alpha} binding peptide, KB-752, that enhances spontaneous nucleotide exchange of G{alpha}{sub i} subunits. Structural determination of the G{alpha}{sub i1}/peptide complex reveals unique changes in the G{alpha} switch regions predicted to enhance nucleotide exchange by creating a GDP dissociation route. Our results cast light onto a potential mechanism by which G{alpha} subunits adopt a conformation suitable for nucleotide exchange.

  7. Current status and perspectives in alpha radioimmunotherapy.

    Science.gov (United States)

    Chérel, M; Davodeau, F; Kraeber-Bodéré, F; Chatal, J F

    2006-12-01

    Systemic administration of radiolabeled antibody directed against tumor antigens in radioimmunotherapy (RIT) enables to specifically target the cancer cells and to destroy them. So far, this strategy has proven its efficiency in the treatment of some hematological cancers with antibodies labeled with beta emitting radionuclides. In the last 2 decades, availability of short half life alpha emitters prompted to consider their use in RIT. Contrary to beta particles, alpha particles have a short path length and display a high lineic energy transfer. Those physical characteristics open new fields of clinical applications complementary to beta-RIT. To date, alpha-RIT is still at a preclinical stage of development: the radiolabeling methods need to be optimized to ensure in vivo stability of the radiopharmaceuticals. Some radionuclides have complex decay schemes with daughters emitting further alpha particles whose toxicity needs to be investigated. The modalities of administration of radiolabeled antibodies in animal models require also to be improved for delivering higher doses to tumor targets. A comprehensive analysis of the specific events occurring at cell or tissue level in response to alpha irradiation would be of great interest in order to define the best therapeutic association for residual disease or consolidation treatments. This approach has been proven to be efficient in increasing antitumor response either by using high doses with organ protection (kidney, bone marrow) or by a synergistic effect between alpha-RIT and associated treatments, such as chemotherapy.

  8. Systemic Targeted Alpha Radiotherapy for Cancer

    Directory of Open Access Journals (Sweden)

    Allan B. J.

    2013-09-01

    Full Text Available Background: The fundamental principles of internal targeted alpha therapy for cancer were established many decades ago.The high linear energy transfer (LET of alpha radiation to the targeted cancer cellscauses double strand breaks in DNA. At the same time, the short range radiation spares adjacent normal tissues. This targeted approach complements conventional external beam radiotherapy and chemotherapy. Such therapies fail on several fronts, such as lack of control of some primary cancers (e.g.glioblastoma multiformeand to inhibit the development of lethal metastatic cancer after successful treatment of the primary cancer. Objective: This review charts the developing role of systemic high LET, internal radiation therapy. Method: Targeted alpha therapy is a rapidly advancing experimental therapy that holds promise to deliver high cytotoxicity to targeted cancer cells. Initially thought to be indicated for leukemia and micrometastases, there is now evidence that solid tumors can also be regressed. Results: Alpha therapy may be molecular or physiological in its targeting. Alpha emitting radioisotopes such as Bi-212, Bi-213, At-211 and Ac-225 are used to label monoclonal antibodies or proteins that target specifc cancer cells. Alternatively, Radium-233 is used for palliative therapy of breast and prostate cancers because of its bone seeking properties. Conclusion: Preclinical studies and clinical trials of alpha therapy are discussed for leukemia, lymphoma, melanoma, glioblastoma multiforme, bone metastases, ovarian cancer, pancreatic cancer and other cancers.

  9. Cytokine vaccination: neutralising IL-1alpha autoantibodies induced by immunisation with homologous IL-1alpha

    DEFF Research Database (Denmark)

    Svenson, M; Hansen, M B; Thomsen, Allan Randrup

    2000-01-01

    High-affinity IgG autoantibodies (aAb) to IL-1alpha are among the most frequently found aAb to cytokines in humans. To establish an animal model with aAb to IL-1alpha, we immunised mice with recombinant murine IL-1alpha. Unprimed and Bacille Calmette-Guérin (BCG)-primed BALB/cA mice were vaccinated...... in mice by vaccination with recombinant murine IL-1alpha conjugated to PPD. Studies of the effects of IL-1alpha aAb in such animals may help clarify the importance of naturally occurring IL-1alpha aAb in humans and permit the evaluation of future therapies with cytokine aAb in patients...... with IL-1alpha coupled to purified protein derivative of tuberculin (PPD). Both unprimed and primed animals developed IgG aAb to IL-1alpha. These aAb persisted at high levels more than 100 days after vaccination and did not cross-react with murine IL-1beta. The induced anti-IL-1alpha aAb inhibited binding...

  10. Alpha 1-blockers vs 5 alpha-reductase inhibitors in benign prostatic hyperplasia. A comparative review

    DEFF Research Database (Denmark)

    Andersen, J T

    1995-01-01

    During recent years, pharmacological treatment of symptomatic benign prostatic hyperplasia (BPH) has become the primary treatment choice for an increasing number of patients. The 2 principal drug classes employed are alpha 1-blockers and 5 alpha-reductase inhibitors. Current information from...... of patients who will respond well to alpha 1-blockers have yet to be identified, and data concerning the long term effects of these drugs are not yet available. 5 alpha-Reductase inhibitors have a slow onset of effect, but treatment leads to improvement in symptoms, reduction of the size of the prostate gland...... or unwilling to undergo surgical resection of the prostate will benefit from such therapy....

  11. Selectivity of the imidazoline alpha-adrenoceptor agonists (oxymetazoline and cirazoline) for human cloned alpha 1-adrenoceptor subtypes.

    Science.gov (United States)

    Horie, K.; Obika, K.; Foglar, R.; Tsujimoto, G.

    1995-01-01

    1. To investigate the structure-activity relationships of alpha-adrenoceptor agonists for the alpha 1-adrenoceptor subtypes, we have compared the imidazoline class of compounds, oxymetazoline and cirazoline, with the phenethylamine, noradrenaline, in their affinities and also in their intrinsic activities in Chinese hamster ovary (CHO) cells stably expressing the cloned human alpha 1-adrenoceptor subtypes (alpha 1a-, alpha 1b-, and alpha 1d-subtypes). 2. Radioligand binding studies with [125I]-HEAT showed that cirazoline and oxymetazoline had higher affinities at alpha 1a-subtype than at alpha 1b- and alpha 1d-subtypes, while noradrenaline had higher affinity at the alpha 1d-subtype than at alpha 1a- and alpha 1b-subtypes. 3. In functional studies, cirazoline caused transients of cytosolic Ca2+ concentrations ([Ca2+]i response) in a concentration-dependent manner and developed a maximal response similar to that to noradrenaline in CHO cells expressing the alpha 1a-subtype, while it acted as a partial agonist at alpha 1b- and alpha 1d-adrenoceptors. Oxymetazoline, on the other hand, was a weak agonist at alpha 1a-adrenoceptors, and has no intrinsic activity at the other subtypes. 4. Using the phenoxybenzamine inactivation method, the relationships between receptor occupancy and noradrenaline-induced [Ca2+]i response for alpha 1a- and alpha 1d-subtypes were found to be linear, whereas it was moderately hyperbolic for the alpha 1b-subtype, indicating the absence of receptor reserves in CHO cells expressing alpha 1a- and alpha 1d-subtypes while there exists a small receptor reserve for CHO cells expressing the alpha 1b-subtype.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:8564227

  12. Anti-IL-1alpha autoantibodies in early rheumatoid arthritis

    DEFF Research Database (Denmark)

    Forslind, K; Svensson, Birte; Svenson, M

    2001-01-01

    To investigate the potential predictive value of autoantibodies against IL1-alpha (anti-IL-1alpha) in patients with early rheumatoid arthritis (RA).......To investigate the potential predictive value of autoantibodies against IL1-alpha (anti-IL-1alpha) in patients with early rheumatoid arthritis (RA)....

  13. The nitric oxide-donating pravastatin derivative, NCX 6550 [(1S-[1alpha(betaS*, deltaS*), 2alpha, 6alpha, 8beta-(R*), 8a alpha

    Science.gov (United States)

    Dever, G; Spickett, C M; Kennedy, S; Rush, C; Tennant, G; Monopoli, A; Wainwright, C L

    2007-01-01

    Statins possess anti-inflammatory effects that may contribute to their ability to slow atherogenesis, whereas nitric oxide (NO) also influences inflammatory cell adhesion. This study aimed to determine whether a novel NO-donating pravastatin derivative, NCX 6550 [(1S-[1alpha(betaS*,deltaS*),2alpha,6alpha,8beta-(R*),8a alpha

  14. Measurement of radium micro-precipitates using alpha spectrometry and total alpha counting methods

    International Nuclear Information System (INIS)

    Hosseini, T.; Fathivand, A.A.

    2004-01-01

    Background: This study consists of two parts. The first part deals with both qualitative and quantitative analysis of 226 Ra suing alpha spectrometry measurement method. In the second part, the percentage of radioactive equilibrium between 226 Radium and its daughter products were determined by alpha spectrometry and total alpha measurement system after elapsed time of 15 days from precipitation. Materials and methods: Twelve 226 Radium samples as Barium-Radium Sulfate in form of micro-precipitates on millipore and What man 42 filters were prepared. An alpha spectrometer with surface barrier detector and a total alpha measurement system consists of scintillation crystal assembly Zinc Silver were used for counting. Results: The minimum detection limit of alpha spectrometry and total alpha counting for 226 Radium measurements in samples for counting time equal to 10000 seconds, were found to be 3.7 mBq and 15.8 mBq respectively. Results from total alpha counting showed that radioactive equilibrium between 226 Radium and its daughter products reached to about 92%± 3.5, where as, in the case of alpha spectrometry radioactive equilibrium, it was destroyed due to vacuum during counting the sample. Also in case of alpha spectrometry, the optimum sample to detector distance, was found to be 0.5 centimeter. Conclusion: From this study it was concluded that micro-precipitation can be used as a proper method for sample preparation and alpha spectrometry due to its lower detection limit to measure low concentration of 224 Radium and 226 Radium in these precipitates, prepared from different samples. Besides it is not time consuming and sources can be measured immediately after sample preparation

  15. Alpha-particle fluence in radiobiological experiments.

    Science.gov (United States)

    Nikezic, Dragoslav; Yu, Kwan Ngok

    2017-03-01

    Two methods were proposed for determining alpha-particle fluence for radiobiological experiments. The first involved calculating the probabilities of hitting the target for alpha particles emitted from a source through Monte Carlo simulations, which when multiplied by the activity of the source gave the fluence at the target. The second relied on the number of chemically etched alpha-particle tracks developed on a solid-state nuclear track detector (SSNTD) that was irradiated by an alpha-particle source. The etching efficiencies (defined as percentages of latent tracks created by alpha particles from the source that could develop to become visible tracks upon chemical etching) were computed through Monte Carlo simulations, which when multiplied by the experimentally counted number of visible tracks would also give the fluence at the target. We studied alpha particles with an energy of 5.486 MeV emitted from an 241Am source, and considered the alpha-particle tracks developed on polyallyldiglycol carbonate film, which is a common SSNTD. Our results showed that the etching efficiencies were equal to one for source-film distances of from 0.6 to 3.5 cm for a circular film of radius of 1 cm, and for source-film distances of from 1 to 3 cm for circular film of radius of 2 cm. For circular film with a radius of 3 cm, the etching efficiencies never reached 1. On the other hand, the hit probability decreased monotonically with increase in the source-target distance, and fell to zero when the source-target distance was larger than the particle range in air. © The Author 2016. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Radiation Oncology.

  16. Cancer radioimmunotherapy with alpha-emitting nuclides

    Energy Technology Data Exchange (ETDEWEB)

    Couturier, Olivier [INSERM U 601, Nantes (France); Place Alexis Ricordeau, Department of Nuclear Medicine, Nantes, Cedex (France); Supiot, Stephane; Degraef-Mougin, Marie; Faivre-Chauvet, Alain; Carlier, Thomas; Chatal, Jean-Francois; Davodeau, Francois; Cherel, Michel [INSERM U 601, Nantes (France)

    2005-04-01

    In lymphoid malignancies and in certain solid cancers such as medullary thyroid carcinoma, somewhat mixed success has been achieved when applying radioimmunotherapy (RIT) with {beta}-emitters for the treatment of refractory cases. The development of novel RIT with {alpha}-emitters has created new opportunities and theoretical advantages due to the high linear energy transfer (LET) and the short path length in biological tissue of {alpha}-particles. These physical properties offer the prospect of achieving selective tumoural cell killing. Thus, RIT with {alpha}-emitters appears particularly suited for the elimination of circulating single cells or cell clusters or for the treatment of micrometastases at an early stage. However, to avoid non-specific irradiation of healthy tissues, it is necessary to identify accessible tumoural targets easily and rapidly. For this purpose, a small number of {alpha}-emitters have been investigated, among which only a few have been used for in vivo preclinical studies. Another problem is the availability and cost of these radionuclides; for instance, the low cost and the development of a reliable actinium-225/bismuth-213 generator were probably determining elements in the choice of bismuth-213 in the only human trial of RIT with an {alpha}-emitter. This article reviews the literature concerning monoclonal antibodies radiolabelled with {alpha}-emitters that have been developed for possible RIT in cancer patients. The principal radio-immunoconjugates are considered, starting with physical and chemical properties of {alpha}-emitters, their mode of production, the possibilities and difficulties of labelling, in vitro studies and finally, when available, in vivo preclinical and clinical studies. (orig.)

  17. Cancer radioimmunotherapy with alpha-emitting nuclides.

    Science.gov (United States)

    Couturier, Olivier; Supiot, Stéphane; Degraef-Mougin, Marie; Faivre-Chauvet, Alain; Carlier, Thomas; Chatal, Jean-François; Davodeau, François; Cherel, Michel

    2005-05-01

    In lymphoid malignancies and in certain solid cancers such as medullary thyroid carcinoma, somewhat mixed success has been achieved when applying radioimmunotherapy (RIT) with beta-emitters for the treatment of refractory cases. The development of novel RIT with alpha-emitters has created new opportunities and theoretical advantages due to the high linear energy transfer (LET) and the short path length in biological tissue of alpha-particles. These physical properties offer the prospect of achieving selective tumoural cell killing. Thus, RIT with alpha-emitters appears particularly suited for the elimination of circulating single cells or cell clusters or for the treatment of micrometastases at an early stage. However, to avoid non-specific irradiation of healthy tissues, it is necessary to identify accessible tumoural targets easily and rapidly. For this purpose, a small number of alpha-emitters have been investigated, among which only a few have been used for in vivo preclinical studies. Another problem is the availability and cost of these radionuclides; for instance, the low cost and the development of a reliable actinium-225/bismuth-213 generator were probably determining elements in the choice of bismuth-213 in the only human trial of RIT with an alpha-emitter. This article reviews the literature concerning monoclonal antibodies radiolabelled with alpha-emitters that have been developed for possible RIT in cancer patients. The principal radio-immunoconjugates are considered, starting with physical and chemical properties of alpha-emitters, their mode of production, the possibilities and difficulties of labelling, in vitro studies and finally, when available, in vivo preclinical and clinical studies.

  18. Pharmacologic specificity of alpha-2 adrenergic receptor subtypes

    Energy Technology Data Exchange (ETDEWEB)

    Petrash, A.; Bylund, D.

    1986-03-01

    The authors have defined alpha-2 adrenergic receptor subtypes in human and rat tissues using prazosin as a subtype selective drug. Prazosin has a lower affinity (250 nM) at alpha-2A receptor and a higher affinity (5 nM) at alpha-2B receptors. In order to determine if other adrenergic drugs are selective for one or the other subtypes, the authors performed (/sup 3/H)yohimbine inhibition experiments with various adrenergic drugs in tissues containing alpha-2A, alpha-2B or both subtypes. Oxymetazoline, WB4101 and yohimbine were found to be 80-, 20- and 10-fold more potent at alpha-2A receptors than at alpha-2B receptors. Phentolamine, adazoxan, (+)- and (-)-mianserin, clonidine, (+)-butaclamol, (-)- and (+)-norepinephrine, epinephrine, dopamine and thioridazine were found to have equal affinities for the two subtypes. These results further validate the subdivision of alpha-2 adrenergic receptors into alpha-2A and alpha-2B subtypes.

  19. Alpha 1 B- but not alpha 1 A-adrenoceptors mediate inositol phosphate generation

    NARCIS (Netherlands)

    Michel, M. C.; Hanft, G.; Gross, G.

    1990-01-01

    We used novel highly subtype-selective antagonists to study whether alpha 1A- and/or alpha 1B-adrenoceptors mediate the stimulation of inositol phosphate generation by noradrenaline in rat cerebral cortex. Phentolamine (10 microM) and prazosin (100 nM) completely abolished the stimulated inositol

  20. Role of macrophage inflammatory protein-1 alpha (MIP-1 alpha) in acute lung injury in rats

    DEFF Research Database (Denmark)

    Shanley, T P; Schmal, H; Friedl, H P

    1995-01-01

    The role of macrophage inflammatory protein-1 alpha (MIP-1 alpha) in the pathogenesis of acute lung injury in rats after intrapulmonary deposition of IgG immune complexes or intratracheal administration of LPS has been assessed. Critical to these studies was the cloning and functional expression...

  1. Alpha-in-air monitor for continuous monitoring based on alpha to beta ratio

    International Nuclear Information System (INIS)

    Somayaji, K.S.; Venkataramani, R.; Swaminathan, N.; Pushparaja

    1997-01-01

    Measurement of long-lived alpha activity collected on a filter paper in continuous air monitoring of ambient working environment is difficult due to interference from much larger concentrations of short-lived alpha emitting daughter products of 222 Rn and 220 Rn. However, the ratio between the natural alpha and beta activity is approximately constant and this constancy of the ratio is used to discriminate against short-lived natural radioactivity in continuous air monitoring. Detection system was specially designed for the purpose of simultaneous counting of alpha and beta activity deposited on the filter paper during continuous monitoring. The activity ratios were calculated and plotted against the monitoring duration up to about six hours. Monitoring was carried out in three facilities with different ventilation conditions. Presence of any long-lived alpha contamination on the filter paper results in increase in the alpha to beta ratio. Long-lived 239 Pu contamination of about 16 DAC.h could be detected after about 45 minutes of commencement of the sampling. The experimental results using prototype units have shown that the approach of using alpha to beta activity ratio method to detect long-lived alpha activity in the presence of short-lived natural activity is satisfactory. (author)

  2. PLE CATALYZED HYDROLYZES OF ALPHA-SUBSTITUTED ALPHA-HYDROXY ESTERS - THE INFLUENCE OF THE SUBSTITUENTS

    NARCIS (Netherlands)

    MOORLAG, H; KELLOGG, RM

    1991-01-01

    The enzymatic hydrolyses of a variety of alpha-substituted mandelic and lactic esters using pig liver esterase (PLE) have been investigated. High to moderate enantioselectivity was found for various alpha-substituted mandelic esters, whereas PLE showed low to no enantioselectivity for

  3. Increased voluntary exercise in mice deficient for tumour necrosis factor-alpha and lymphotoxin-alpha.

    NARCIS (Netherlands)

    Netea, M.G.; Kullberg, B.J.; Vonk, A.G.; Verschueren, I.; Joosten, L.A.B.; Meer, J.W.M. van der

    2007-01-01

    BACKGROUND: The endogenous mediators playing a role in the sensing of fatigue and cessation of exercise are yet to be characterized. We hypothesized that proinflammatory cytokines, in particular tumour necrosis factor-alpha (TNFalpha) and lymphotoxin-alpha (LT) transmit signals leading to fatigue.

  4. Alpha-particle elastic scattering on [sup 16]O in the four [alpha]-particle model

    Energy Technology Data Exchange (ETDEWEB)

    Li Qingrun (CCAST (World Lab.), Beijing (China) Inst. of High Energy Physics, Academia Sinica, Beijing (China)); Yang Yongxu (Dept. of Physics, Guangxi Normal Univ., Guilin (China))

    1993-08-23

    A folding potential describing the alpha-particle scattering on [sup 16]O is constructed based on the four [alpha]-particle model of the nucleus [sup 16]O. This folding potential provides a good description of the experimental data covering a broad energy range. (orig.)

  5. Consistent Measurements of $\\alpha_{s}$ from Precise Oriented Event Shape Distributions

    CERN Document Server

    Abreu, P.; Adye, T.; Adzic, P.; Albrecht, Z.; Alderweireld, T.; Alekseev, G.D.; Alemany, R.; Allmendinger, T.; Allport, P.P.; Almehed, S.; Amaldi, U.; Amapane, N.; Amato, S.; Anassontzis, E.G.; Andersson, P.; Andreazza, A.; Andringa, S.; Antilogus, P.; Apel, W.D.; Arnoud, Y.; Asman, B.; Augustin, J.E.; Augustinus, A.; Baillon, P.; Bambade, P.; Barao, F.; Barbiellini, G.; Barbier, R.; Bardin, D.Yu.; Barker, G.J.; Baroncelli, A.; Battaglia, M.; Baubillier, M.; Becks, K.H.; Begalli, M.; Behrmann, A.; Beilliere, P.; Belokopytov, Yu.; Benekos, N.C.; Benvenuti, A.C.; Berat, C.; Berggren, M.; Bertini, D.; Bertrand, D.; Besancon, M.; Bigi, M.; Bilenky, Mikhail S.; Bizouard, M.A.; Bloch, D.; Blom, H.M.; Bonesini, M.; Bonivento, W.; Boonekamp, M.; Booth, P.S.L.; Borgland, A.W.; Borisov, G.; Bosio, C.; Botner, O.; Boudinov, E.; Bouquet, B.; Bourdarios, C.; Bowcock, T.J.V.; Boyko, I.; Bozovic, I.; Bozzo, M.; Branchini, P.; Brenke, T.; Brenner, R.A.; Bruckman, P.; Brunet, J.M.; Bugge, L.; Buran, T.; Burgsmuller, T.; Buschbeck, B.; Buschmann, P.; Cabrera, S.; Caccia, M.; Calvi, M.; Camporesi, T.; Canale, V.; Carena, F.; Carroll, L.; Caso, C.; Castillo Gimenez, M.V.; Cattai, A.; Cavallo, F.R.; Chabaud, V.; Charpentier, P.; Chaussard, L.; Checchia, P.; Chelkov, G.A.; Chierici, R.; Chochula, P.; Chorowicz, V.; Chudoba, J.; Cieslik, K.; Collins, P.; Contri, R.; Cortina, E.; Cosme, G.; Cossutti, F.; Cowell, J.H.; Crawley, H.B.; Crennell, D.; Crepe-Renaudin, Sabine; Crosetti, G.; Cuevas Maestro, J.; Czellar, S.; Davenport, M.; Da Silva, W.; Deghorain, A.; Della Ricca, G.; Delpierre, P.; Demaria, N.; De Angelis, A.; De Boer, W.; De Clercq, C.; De Lotto, B.; De Min, A.; De Paula, L.; Dijkstra, H.; Di Ciaccio, L.; Dolbeau, J.; Doroba, K.; Dracos, M.; Drees, J.; Dris, M.; Duperrin, A.; Durand, J.D.; Eigen, G.; Ekelof, T.; Ekspong, G.; Ellert, M.; Elsing, M.; Engel, J.P.; Erzen, B.; Espirito Santo, M.C.; Fanourakis, G.; Fassouliotis, D.; Fayot, J.; Feindt, M.; Ferrari, P.; Ferrer, A.; Ferrer-Ribas, E.; Ferro, F.; Fichet, S.; Firestone, A.; Flagmeyer, U.; Foeth, H.; Fokitis, E.; Fontanelli, F.; Franek, B.; Frodesen, A.G.; Fruhwirth, R.; Fulda-Quenzer, F.; Fuster, J.; Galloni, A.; Gamba, D.; Gamblin, S.; Gandelman, M.; Garcia, C.; Gaspar, C.; Gaspar, M.; Gasparini, U.; Gavillet, P.; Gazis, Evangelos; Gele, D.; Ghodbane, N.; Gil Botella, Ines; Glege, F.; Gokieli, R.; Golob, B.; Gomez-Ceballos, G.; Goncalves, P.; Gonzalez Caballero, I.; Gopal, G.; Gorn, L.; Gracco, V.; Grahl, J.; Graziani, E.; Green, C.; Grimm, H.J.; Gris, P.; Grosdidier, G.; Grzelak, K.; Gunther, M.; Guy, J.; Hahn, F.; Hahn, S.; Haider, S.; Hallgren, A.; Hamacher, K.; Hansen, J.; Harris, F.J.; Hedberg, V.; Heising, S.; Hernandez, J.J.; Herquet, P.; Herr, H.; Hessing, T.L.; Heuser, J.M.; Higon, E.; Holmgren, S.O.; Holt, P.J.; Hoorelbeke, S.; Houlden, M.; Hrubec, J.; Huet, K.; Hughes, G.J.; Hultqvist, K.; Jackson, John Neil; Jacobsson, R.; Jalocha, P.; Janik, R.; Jarlskog, C.; Jarlskog, G.; Jarry, P.; Jean-Marie, B.; Johansson, Erik Karl; Jonsson, P.; Joram, C.; Juillot, P.; Kapusta, Frederic; Karafasoulis, K.; Katsanevas, S.; Katsoufis, E.C.; Keranen, R.; Kersevan, B.P.; Khomenko, B.A.; Khovansky, N.N.; Kiiskinen, A.; King, B.; Kinvig, A.; Kjaer, N.J.; Klapp, O.; Klein, Hansjorg; Kluit, P.; Kokkinias, P.; Koratzinos, M.; Kourkoumelis, C.; Kuznetsov, O.; Krammer, M.; Kriznic, E.; Krumshtein, Z.; Kubinec, P.; Kurowska, J.; Kurvinen, K.; Lamsa, J.W.; Lane, D.W.; Langefeld, P.; Laugier, J.P.; Lauhakangas, R.; Leder, G.; Ledroit, Fabienne; Lefebure, V.; Leinonen, L.; Leisos, A.; Leitner, R.; Lemonne, J.; Lenzen, G.; Lepeltier, V.; Lesiak, T.; Lethuillier, M.; Libby, J.; Liko, D.; Lipniacka, A.; Lippi, I.; Lorstad, B.; Loken, J.G.; Lopes, J.H.; Lopez, J.M.; Lopez-Fernandez, R.; Loukas, D.; Lutz, P.; Lyons, L.; MacNaughton, J.; Mahon, J.R.; Maio, A.; Malek, A.; Malmgren, T.G.M.; Maltezos, S.; Malychev, V.; Mandl, F.; Marco, J.; Marco, R.; Marechal, B.; Margoni, M.; Marin, J.C.; Mariotti, C.; Markou, A.; Martinez-Rivero, C.; Martinez-Vidal, F.; Marti i Garcia, S.; Masik, J.; Mastroyiannopoulos, N.; Matorras, F.; Matteuzzi, C.; Matthiae, G.; Mazzucato, F.; Mazzucato, M.; McCubbin, M.; McKay, R.; McNulty, R.; McPherson, G.; Meroni, C.; Meyer, W.T.; Migliore, E.; Mirabito, L.; Mitaroff, W.A.; Mjornmark, U.; Moa, T.; Moch, M.; Moller, Rasmus; Monig, Klaus; Monge, M.R.; Moreau, X.; Morettini, P.; Morton, G.; Muller, U.; Munich, K.; Mulders, M.; Mulet-Marquis, C.; Muresan, R.; Murray, W.J.; Muryn, B.; Myatt, G.; Myklebust, T.; Naraghi, F.; Nassiakou, M.; Navarria, F.L.; Navas, Sergio; Nawrocki, K.; Negri, P.; Nemecek, S.; Neufeld, N.; Nicolaidou, R.; Nielsen, B.S.; Niezurawski, P.; Nikolenko, M.; Nomokonov, V.; Normand, A.; Nygren, A.; Olshevsky, A.G.; Onofre, A.; Orava, R.; Orazi, G.; Osterberg, K.; Ouraou, A.; Paganoni, M.; Paiano, S.; Pain, R.; Paiva, R.; Palacios, J.; Palka, H.; Papadopoulou, T.D.; Papageorgiou, K.; Pape, L.; Parkes, C.; Parodi, F.; Parzefall, U.; Passeri, A.; Passon, O.; Pegoraro, M.; Peralta, L.; Pernicka, M.; Perrotta, A.; Petridou, C.; Petrolini, A.; Phillips, H.T.; Pierre, F.; Pimenta, M.; Piotto, E.; Podobnik, T.; Pol, M.E.; Polok, G.; Poropat, P.; Pozdnyakov, V.; Privitera, P.; Pukhaeva, N.; Pullia, A.; Radojicic, D.; Ragazzi, S.; Rahmani, H.; Ratoff, P.N.; Read, Alexander L.; Rebecchi, P.; Redaelli, Nicola Giuseppe; Regler, M.; Reid, D.; Reinhardt, R.; Renton, P.B.; Resvanis, L.K.; Richard, F.; Ridky, J.; Rinaudo, G.; Rodrigo, German; Rohne, O.; Romero, A.; Ronchese, P.; Rosenberg, E.I.; Rosinsky, P.; Roudeau, P.; Rovelli, T.; Royon, C.; Ruhlmann-Kleider, V.; Ruiz, A.; Saarikko, H.; Sacquin, Y.; Sadovsky, A.; Sajot, G.; Salt, J.; Sampsonidis, D.; Sannino, M.; Schneider, H.; Schwemling, P.; Schwering, B.; Schwickerath, U.; Schyns, M.A.E.; Scuri, Fabrizio; Seager, P.; Sedykh, Yu.; Segar, A.M.; Sekulin, R.; Shellard, R.C.; Sheridan, A.; Siebel, M.; Simard, L.; Simonetto, F.; Sisakian, A.N.; Smadja, G.; Smirnova, O.; Smith, G.R.; Sopczak, A.; Sosnowski, R.; Spassoff, T.; Spiriti, E.; Sponholz, P.; Squarcia, S.; Stanescu, C.; Stanic, S.; Stevenson, K.; Stocchi, A.; Strauss, J.; Strub, R.; Stugu, B.; Szczekowski, M.; Szeptycka, M.; Tabarelli, T.; Tegenfeldt, F.; Terranova, F.; Thomas, J.; Timmermans, Jan; Tinti, N.; Tkachev, L.G.; Todorova, S.; Tomaradze, A.; Tome, B.; Tonazzo, A.; Tortora, L.; Transtromer, G.; Treille, D.; Tristram, G.; Trochimczuk, M.; Troncon, C.; Tsirou, A.; Turluer, M.L.; Tyapkin, I.A.; Tzamarias, S.; Ullaland, O.; Valenti, G.; Vallazza, E.; Vander Velde, C.; Van Apeldoorn, G.W.; Van Dam, Piet; Van Doninck, Walter; Van Eldik, J.; Van Lysebetten, A.; Van Remortel, N.; Van Vulpen, I.; Vassilopoulos, N.; Vegni, G.; Ventura, L.; Venus, W.; Verbeure, F.; Verlato, M.; Vertogradov, L.S.; Verzi, V.; Vilanova, D.; Vitale, L.; Vodopianov, A.S.; Vollmer, C.; Voulgaris, G.; Vrba, V.; Wahlen, H.; Walck, C.; Weiser, C.; Wicke, D.; Wickens, J.H.; Wilkinson, G.R.; Winter, M.; Witek, M.; Wolf, G.; Yi, J.; Zalewska, A.; Zalewski, P.; Zavrtanik, D.; Zevgolatakos, E.; Zimine, N.I.; Zucchelli, G.C.; Zumerle, G.

    2000-01-01

    An updated analysis using about 1.5 million events recorded at $\\sqrt{s} =M_Z$ with the DELPHI detector in 1994 is presented. Eighteen infrared and collinear safe event shape observables are measured as a function of the polar angle of the thrust axis. The data are compared to theoretical calculations in${\\cal O} (\\alpha_s^2)$ including the event orientation. A combined fit of $\\alpha_s$ and of the renormalization scale $x_{\\mu}$ in $\\cal O(\\alpha_s^2$)yields an excellent description of the high statistics data. The weighted average from 18 observables including quark mass effects and correlations is $\\alpha_s(M_Z^2) = 0.1174 \\pm 0.0026$. The final result, derived from the jet cone energy fraction, the observable with the smallest theoretical and experimental uncertainty, is $\\alpha_s(M_Z^2) = =0:1180 0:0006(exp:) 0:0013(hadr:) 0:0008(scale) 0:0007(mass). Further studies include an s determination using theoretical predictions in the next-to-leading log approximation (NLLA), matched NLLA and O(\\alpha^{2}_{s})...

  6. Activity monitoring of alpha-bearing wastes

    International Nuclear Information System (INIS)

    Birkhoff, G.; Bondar, L.

    1980-01-01

    The paper aims at the survey on the actual situation in activity monitoring of alpha-bearing wastes. Homogeneous materials such as liquid-, gaseous- and homogeneous solid wastes are amenable to destructive analyses of representative samples. Available destructive analyses methods are sensitive and precise enough to cope with all requirements in alpha-waste monitoring. The more difficult problems are encountered with alpha-contaminated solids, when representative sampling is not practicable. Non-destructive analysis techniques are applied for monitoring this category of solid wastes. The techniques for nondestructive analysis of alpha-bearing wastes are based on the detection of gamma and/or neutron-emission of actinides. Principles and a theory of non-destructive radiometric assay of plutonium contaminated solid waste streams are explained. Guidelines for the calibration of instruments and interpretation of experimental data are given. Current theoretical and experimental development work in this problem area is reviewed. Evaluations concerning capabilities and limitations of monitoring systems for alpha-bearing solid wastes are very complex and out of the scope of this paper

  7. Role of Frontal Alpha Oscillations in Creativity

    Science.gov (United States)

    Lustenberger, Caroline; Boyle, Michael R.; Foulser, A. Alban; Mellin, Juliann M.; Fröhlich, Flavio

    2015-01-01

    Creativity, the ability to produce innovative ideas, is a key higher-order cognitive function that is poorly understood. At the level of macroscopic cortical network dynamics, recent EEG data suggests that cortical oscillations in the alpha frequency band (8 – 12 Hz) are correlated with creative thinking. However, whether alpha oscillations play a fundamental role in creativity has remained unknown. Here we show that creativity is increased by enhancing alpha power using 10 Hz transcranial alternating current stimulation (10Hz-tACS) of the frontal cortex. In a study of 20 healthy participants with a randomized, balanced cross-over design, we found a significant improvement of 7.4% in the Creativity Index measured by the Torrance Test of Creative Thinking, a comprehensive and most frequently used assay of creative potential and strengths. In a second similar study with 20 subjects, 40Hz-tACS was used in instead of 10Hz-tACS to rule out a general “electrical stimulation” effect. No significant change in the Creativity Index was found for such frontal gamma stimulation. Our results suggest that alpha activity in frontal brain areas is selectively involved in creativity; this enhancement represents the first demonstration of specific neuronal dynamics that drive creativity and can be modulated by non-invasive brain stimulation. Our findings agree with the model that alpha recruitment increases with internal processing demands and is involved in inhibitory top-down control, which is an important requirement for creative ideation. PMID:25913062

  8. Poly(L-histidine-tagged 5-aminolevulinic acid prodrugs: new photosensitizing precursors of protoporphyrin IX for photodynamic colon cancer therapy

    Directory of Open Access Journals (Sweden)

    Johnson RP

    2012-05-01

    Full Text Available Renjith P Johnson,1* Chung-Wook Chung,2* Young-Il Jeong,2 Dae Hwan Kang,2 Hongsuk Suh,3 Il Kim,11WCU Centre for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, Pusan, 2National Research and Development Center for Hepatobiliary Cancer, Pusan National University, Yangsan Hospital, Yangsan, Gyeongnam, 3Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Pusan, Korea*These authors contributed equally to this workBackground: 5-Aminolevulinic acid (ALA and its derivatives have been widely used in photodynamic therapy. The main drawback associated with ALA-based photodynamic therapy (ALA-PDT and ALA fluorescence diagnosis results from the hydrophilic nature of ALA and lack of selectivity for tumor versus nontumor cells. The application of certain triggers, such as pH, into conventional sensitizers for controllable 1O2 release is a promising strategy for tumor-targeted treatment.Methods: A series of pH-sensitive ALA-poly(L-histidine [p(L-Hisn] prodrugs were synthesized via ring opening polymerization of 1-benzyl-N-carboxy-L-histidine anhydride initiated by the amine hydrochloride group of ALA itself. As an alternative to ALA for PDT, the synthesized prodrugs were used to treat a cultured human colon cancer HCT116 cell line under different pH conditions. The effect of ALA-p(L-Hisn derivatives was evaluated by monitoring the fluorescence intensity of protoporphyrin IX, and measuring the cell survival rate after suitable light irradiation.Results: The cytotoxicity and dark toxicity of ALA and synthesized ALA-p(L-His derivatives in HEK293T and HCT116 cells in the absence of light at pH 7.4 and 6.8 shows that the cell viability was relatively higher than 100%. ALA-p(L-Hisn showed high phototoxicity and selectivity in different pH conditions compared with ALA alone. Because the length of the histidine chain increases in the ALA

  9. IEA PVPS co-operation with the World Bank - Task IX: Deployment of photovoltaic technologies: co-operation with developing countries

    International Nuclear Information System (INIS)

    1998-01-01

    This report traces the activities undertaken by the Task Force of The Executive Committee of the Photovoltaic Power Systems (PVPS) Implementing Agreement (the DC Team Task Force) in co-operating with major donors such as the World bank and in converting the Task Force to a new Annex (Task IX) of the Implementing Agreement with participating countries. Details of the work undertaken involving the participation of the DC Team, the World Bank co-operation, and the development of reference terms for the new PVPS Annex are discussed, and the rationale for UK participation in Task IX is outlined. Appendices present an overview of solar photovoltaic power, details of the PVPS seminar at the World Bank's Energy Week, and the draft workplan and new PVPS Annex

  10. Synthesis and carbonic anhydrase I, II, VII, and IX inhibition studies with a series of benzo[d]thiazole-5- and 6-sulfonamides.

    Science.gov (United States)

    Abdoli, Morteza; Angeli, Andrea; Bozdag, Murat; Carta, Fabrizio; Kakanejadifard, Ali; Saeidian, Hamid; Supuran, Claudiu T

    2017-12-01

    A series of benzo[d]thiazole-5- and 6-sulfonamides has been synthesized and investigated for the inhibition of several human (h) carbonic anhydrase (CA, EC 4.2.1.1) isoforms, using ethoxzolamide (EZA) as lead molecule. 2-Amino-substituted, 2-acylamino- and halogenated (bromo-and iodo-derivatives at the heterocyclic ring) compounds led to several interesting inhibitors against the cytosolic hCA I, II and VII, as well as the transmembrane, tumor-associated hCA IX isoforms. Several subnanomolar/low nanomolar, isoform-selective sulfonamide inhibitors targeting hCA II, VII and IX were detected. The sharp structure-activity relationship for CA inhibition with this small series of derivatives, with important changes of activity observed even after minor changes in the scaffold or at the 2-amino moiety, make this class of scarcely investigated sulfonamides of particular interest for further investigations.

  11. Purification and characterization of alpha-amylase from rat pancreatic acinar carcinoma. Comparison with pancreatic alpha-amylase.

    OpenAIRE

    Reddy, M K; Heda, G D; Reddy, J K

    1987-01-01

    alpha-Amylase was purified to apparent homogeneity from normal pancreas and a transplantable pancreatic acinar carcinoma of the rat by affinity chromatography on alpha-glucohydrolase inhibitor (alpha-GHI) bound to aminohexyl-Sepharose 4B. Recovery was 95-100% for both pancreas and tumour alpha-amylases. They were monomeric proteins, with Mr approx. 54000 on SDS/polyacrylamide-gel electrophoresis. Isoelectric focusing of both normal and tumour alpha-amylases resolved each into two major isoenz...

  12. Opposing actions of the progesterone metabolites, 5alpha-dihydroprogesterone (5alphaP) and 3alpha-dihydroprogesterone (3alphaHP) on mitosis, apoptosis, and expression of Bcl-2, Bax and p21 in human breast cell lines.

    Science.gov (United States)

    Wiebe, John P; Beausoleil, Michel; Zhang, Guihua; Cialacu, Valentin

    2010-01-01

    Previous studies have shown that breast tissues and breast cell lines convert progesterone (P) to 5alpha-dihydroprogesterone (5alphaP) and 3alpha-dihydroprogesterone (3alphaHP) and that 3alphaHP suppresses, whereas 5alphaP promotes, cell proliferation and detachment. The objectives of the current studies were to determine if the 5alphaP- and 3alphaHP-induced changes in cell numbers are due to altered rates of mitosis and/or apoptosis, and if 3alphaHP and 5alphaP act on tumorigenic and non-tumorigenic cells, regardless of estrogen (E) and P receptor status. The studies were conducted on tumorigenic (MCF-7, MDA-MB-231, T47D) and non-tumorigenic (MCF-10A) human breast cell lines, employing several methods to assess the effects of the hormones on cell proliferation, mitosis, apoptosis and expression of Bcl-2, Bax and p21. In all four cell lines, 5alphaP increased, whereas 3alphaHP decreased cell numbers, [(3)H]thymidine uptake and mitotic index. Apoptosis was stimulated by 3alphaHP and suppressed by 5alphaP. 5alphaP resulted in increases in Bcl-2/Bax ratio, indicating decreased apoptosis; 3alphaHP resulted in decreases in Bcl-2/Bax ratio, indicating increased apoptosis. The effects of either 3alphaHP or 5alphaP on cell numbers, [(3)H]thymidine uptake, mitosis, apoptosis, and Bcl-2/Bax ratio, were abrogated when cells were treated simultaneously with both hormones. The expression of p21 was increased by 3alphaHP, and was unaffected by 5alphaP. The results provide the first evidence that 5alphaP stimulates mitosis and suppresses apoptosis, whereas 3alphaHP inhibits mitosis and stimulates apoptosis. The opposing effects of 5alphaP and 3alphaHP were observed in all four breast cell lines examined and the data suggest that all breast cancers (estrogen-responsive and unresponsive) might be suppressed by blocking 5alphaP formation and/or increasing 3alphaHP. The findings further support the hypothesis that progesterone metabolites are key regulatory hormones and that changes

  13. Low energy alphas in the drift detector

    International Nuclear Information System (INIS)

    Snowden-Ifft, D.P.; Lawson, T.; Spooner, N.J.C.; Villaume, N.

    2004-01-01

    The Directional Recoil Identification From Tracks project is a US-UK endeavor to build and operate a low pressure negative ion TPC (NITPC) to search for weakly interacting massive particles (WIMPs) thought to make up the dark matter in our Galaxy. Low energy (∼10 keV) alpha events from U and Th decays within the walls and wires of the detector can enter the active volume of the detector and be confused for WIMP interactions. This paper presents data on and a model of low energy alphas in a NITPC operated at 40 Torr CS 2 with the aim of understanding and removing this potentially serious background. A comparison of the data to this model reveals good agreement with range predictions of SRIM2000 and allows us to calculate the energy dissipation per ion pair, W=19.0±0.5 eV for low energy alphas in CS 2

  14. Liver replacement for alpha1-antitrypsin deficiency

    Science.gov (United States)

    Putnam, Charles W.; Porter, Kendrick A.; Peters, Robert L.; Ashcavai, Mary; Redeker, Allan G.; Starzl, Thomas E.

    2010-01-01

    A 16-year-old girl with advanced cirrhosis and severe alpha1-antitrypsin deficiency of the homozygous PiZZ phenotype was treated by orthotopic liver transplantation. After replacement of the liver with a homograft from a donor with the normal PiMM phenotype, the alpha1-antitrypsin concentration in the recipient’s serum rose to normal; it had the PiMM phenotype. Two and a third years later, chronic rejection necessitated retransplantation. Insertion of a homograft from a heterozygous PiMZ donar was followed by the identification of that phenotype in the recipient’s serum. Neither liver graft developed the alpha1-antitrypsin glycoprotein deposits seen with the deficiency state. These observations confirm that this hepatic- based inborn error metabolism is metabolically cured by liver replacement. PMID:320694

  15. The Development Of Scientific Approach-oriented Science Learning Materials On Biotechnology And Food Production Topics For Grade IX Junior High School

    OpenAIRE

    Febrina, Ririn Febrina Ririn; Natalina, Mariani Natalina Mariani; Suryawati, Evi Suryawati Evi

    2015-01-01

    The aim of this research was to develop scientific approach-oriented science learning materials on biotechnology and food production topic for grade IX junior high school. The developments consisted of syllabus, lesson plans, worksheets, authentic assessment (paper and pencil test, attitude assessment, performance assessment, product assessment, project assessment, self-assessment and portofolio assessment). The development was conducted at Biology Education University of Riau and the pilot t...

  16. Lipoyl-Homotaurine Derivative (ADM_12) Reverts Oxaliplatin-Induced Neuropathy and Reduces Cancer Cells Malignancy by Inhibiting Carbonic Anhydrase IX (CAIX).

    Science.gov (United States)

    Fragai, Marco; Comito, Giuseppina; Di Cesare Mannelli, Lorenzo; Gualdani, Roberta; Calderone, Vito; Louka, Alexandra; Richichi, Barbara; Francesconi, Oscar; Angeli, Andrea; Nocentini, Alessio; Gratteri, Paola; Chiarugi, Paola; Ghelardini, Carla; Tadini-Buoninsegni, Francesco; Supuran, Claudiu T; Nativi, Cristina

    2017-11-09

    Oxaliplatin (OXA) is a valuable and largely used cancer drug which induces a serious and intractable neuropathy. The lipoyl-homotaurine derivative (ADM_12) reverts in vivo OXA-induced neuropathy, and it is an effective antagonist of the nociceptive sensor channel TRPA1. Unprecedentedly, this safe analgesic showed a synergy with OXA in vitro and proved to inhibit CA IX, a relevant therapeutic target, clearly interfering with pancreatic cancer cells' aggressiveness.

  17. Activation of factor IX zymogen results in exposure of a binding site for low-density lipoprotein receptor-related protein.

    Science.gov (United States)

    Neels, J G; van Den Berg, B M; Mertens, K; ter Maat, H; Pannekoek, H; van Zonneveld, A J; Lenting, P J

    2000-11-15

    The interaction between the endocytic receptor low density lipoprotein receptor-related protein (LRP) and either coagulation factor IX or its active derivative factor IXa was studied. Purified factor IX was unable to associate with LRP when analyzed by surface plasmon resonance. By contrast, factor XIa-mediated conversion of factor IX into factor IXa resulted in reversible dose- and calcium-dependent binding to LRP. Active-site blocking of factor IXa did not affect binding to LRP, whereas LRP binding was efficiently inhibited in the presence of heparin or antibodies against factor IX or LRP. The factor IXa-LRP interaction could be described by a 2-site binding model with equilibrium dissociation constants of 27 nmol/L and 69 nmol/L. Consistent with this model, it was observed that factor IXa binds to 2 different recombinant receptor fragments of LRP (denoted cluster II and cluster IV) with equilibrium dissociation constants of 227 nmol/L and 53 nmol/L, respectively. The amount of factor IXa degraded by LRP-deficient cells was 35% lower than by LRP-expressing cells, demonstrating that LRP contributes to the transport of factor IXa to the intracellular degradation pathway. Because ligand binding to LRP is often preceded by binding to proteoglycans, the contribution of proteoglycans to the catabolism of factor IXa was addressed by employing proteoglycan-deficient cells. Degradation of factor IXa by proteoglycan-deficient cells proceeded at a 83% lower rate than wild-type cells. In conclusion, the data presented here indicate that both LRP and proteoglycans have the potential to contribute to the catabolism of factor IXa.

  18. Ce3+ activated LaBr3?xIx : High-light-yield and fast-response mixed halide scintillators

    NARCIS (Netherlands)

    Birowosuto, M.D.; Dorenbos, P.; Krämer, K.W.; Güdel, H.U.

    2008-01-01

    Here, we report the scintillation properties of LaBr3?xIx:5%Ce3+ with four different compositions of x, i.e., x = 0.75, 1.5, 2, and 2.25. Radioluminescence spectra reveal a shift of the emission wavelength with the LaBr3 to LaI3 ratio. LaBr1.5I1.5:5%Ce3+ shows the highest scintillation light yield

  19. Advances in alpha air monitoring instrumentation

    International Nuclear Information System (INIS)

    Valentine, A.M.

    1979-01-01

    Early detection of airborne radioactive material is important for effective protection of workers, particularly at facilities handling high toxicity alpha-emitting radionuclides such as 238 Pu and 239 Pu. Variable levels of ever present and naturally occurring alpha-emitting radon daughters made gross alpha air monitoring systems unreliable for live-time monitoring of airborne plutonium. Hence, good live-time monitoring was not possible until an improved alpha air monitoring instrument capable of monitoring select plutonium radionuclides of concern was developed and marketed by nuclear instrumentation companies in the USA during the late 1960s and early 1970s. This monitoring instrument utilized a solid-state silicon-diffused junction type of detector and pulse-height analyser system to achieve a radon-daughter rejection capability. This rejection capability has resulted in an improved sensitivity for specific alpha-emitting radionuclides such as 238 Pu, 239 Pu and 241 Am. Current models of this instrument are capable of detecting 40 dis/min (0.65 Bq) of plutonium alpha activity. This activity is about equal to the integrated activity workers would be exposed to if they worked for eight hours in an airborne concentration equal to the maximum permissible concentration for transportable 239 Pu. The Los Alamos Scientific Laboratory began using these instruments in its plutonium research laboratories when they became available in the early 1970s. Approximately 300 are currently in service, and their use has resulted in much improved protection of plutonium workers because accidental airborne releases can now be detected soon after they occur. General design features of these instruments are discussed together with actual operational experience and field calibration procedures. (author)

  20. Parallel Genetic Algorithm for Alpha Spectra Fitting

    Science.gov (United States)

    García-Orellana, Carlos J.; Rubio-Montero, Pilar; González-Velasco, Horacio

    2005-01-01

    We present a performance study of alpha-particle spectra fitting using parallel Genetic Algorithm (GA). The method uses a two-step approach. In the first step we run parallel GA to find an initial solution for the second step, in which we use Levenberg-Marquardt (LM) method for a precise final fit. GA is a high resources-demanding method, so we use a Beowulf cluster for parallel simulation. The relationship between simulation time (and parallel efficiency) and processors number is studied using several alpha spectra, with the aim of obtaining a method to estimate the optimal processors number that must be used in a simulation.