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Sample records for adherent lymphokine-activated killer

  1. Tissue distribution of adoptively transferred adherent lymphokine-activated killer cells assessed by different cell labels

    DEFF Research Database (Denmark)

    Basse, P; Herberman, R B; Hokland, M;

    1992-01-01

    Assessment of the tissue distribution of adoptively transferred adherent lymphokine-activated killer A-LAK) cells by use of 51Cr indicated that these effector cells, after an initial phase in the lungs, distributed in high numbers to liver and spleen (30% and 10% of injected dose, respectively......). However, when this experiment was repeated with 125IdUrd as cell label, fewer than 2% and 0.5% of the injected cells distributed into liver and spleen respectively. To analyse this discrepancy, we compared the tissue distribution of 51Cr- and 125IdUrd-labelled A-LAK cells with that indicated...

  2. Induction of lymphokine-activated killer activity in rat splenocyte cultures: The importance of 2-mercaptoethanol and indomethacin

    NARCIS (Netherlands)

    P.J.K. Kuppen (P. J K); A.M.M. Eggermont (Alexander); A.W. Marinelli (Andreas); E. de Heer (Emile); C.J.H. van de Velde (Cornelis); G.J. Fleuren (G.)

    1991-01-01

    textabstractThe role of 2-mercaptoethanol and indomethacin in the induction of lymphokine-activated killer (LAK) activity by interleukin-2 (IL-2) in rat splenocyte cultures was investigated. Spleens from 4-month-old male rats of five different strains were tested. Splenocytes were cultured for 3-5 d

  3. Assessment of human natural killer and lymphokine-activated killer cell cytotoxicity against Toxoplasma gondii trophozoites and brain cysts

    Energy Technology Data Exchange (ETDEWEB)

    Dannemann, B.R.; Morris, V.A.; Araujo, F.G.; Remington, J.S. (Palo Alto Medical Foundation, CA (USA))

    1989-10-15

    Because previous work has suggested that NK cells may be important in host resistance against the intracellular parasite Toxoplasma gondii we examined whether human NK cells and lymphokine-activated killer (LAK) cells have activity against trophozoites and cysts of this organism in vitro. A method to radiolabel Toxoplasma trophozoites with 51Cr was developed and direct cytotoxic activity was determined by using modifications of the standard 51Cr release assay. Viability of 51Cr-labeled trophozoites assessed by both methylene blue staining and trypan blue exclusion was greater than 90%. Significantly more 51Cr was released by anti-Toxoplasma antibody and C than by antibody in the absence of C. Incubation of trophozoites with freshly isolated human NK cells or NK cells activated with either rIL-2 or rIFN-alpha did not result in significant release of 51Cr (specific lysis was 0 to 2.3%). In contrast, the average specific lysis of radiolabeled trophozoites by LAK cells was significant. In a series of separate experiments, preincubation of radiolabeled trophozoites with heat-inactivated normal or Toxoplasma antibody-positive human serum increased the cytotoxicity of LAK cells from a mean specific lysis of 15% +/- 4.5 to 39% +/- 8.5, respectively, as assessed by 51Cr release. Because previous work has shown that radioisotope release from parasites may be nonspecific, separate experiments were performed to determine the cytotoxicity of LAK cells against antibody-coated trophozoites by using ethidium bromide-acridine orange staining to assess effector cell damage. LAK cells had a mean specific lysis of 51% against antibody-coated trophozoites by ethidium bromide-acridine orange staining. Preincubation with heat-inactivated Toxoplasma-antibody positive human serum did not increase activity of rIL-2-activated NK cells against 51CR-labeled trophozoites.

  4. Follicular lymphoma: in vitro effects of combining lymphokine-activated killer (LAK) cell-induced cytotoxicity and rituximab- and obinutuzumab-dependent cellular cytotoxicity (ADCC) activity.

    Science.gov (United States)

    García-Muñoz, Ricardo; López-Díaz-de-Cerio, Ascensión; Feliu, Jesus; Panizo, Angel; Giraldo, Pilar; Rodríguez-Calvillo, Mercedes; Grande, Carlos; Pena, Esther; Olave, Mayte; Panizo, Carlos; Inogés, Susana

    2016-04-01

    Follicular lymphoma (FL) is a disease of paradoxes-incurable but with a long natural history. We hypothesized that a combination of lymphokine-activated killer (LAK) cells and monoclonal antibodies might provide a robust synergistic treatment and tested this hypothesis in a phase II clinical trial (NCT01329354). In this trial, in addition to R-CHOP, we alternated the administration of only rituximab with rituximab and autologous LAK cells that were expanded ex vivo. Our objective was to determine the in vitro capability of LAK cells generated from FL patients to produce cytotoxicity against tumor cell lines and to determine rituximab- and obinutuzumab-induced cytotoxicity via antibody-dependent cellular cytotoxicity (ADCC) activity. We analyzed the LAK cell-induced cytotoxicity and rituximab (R)- and obinutuzumab (GA101)-induced ADCC activity. We show that LAK cells generated from FL patients induce cytotoxicity against tumor cell lines. R and GA101 enhance cytolysis through ADCC activity of LAK cells. Impaired LAK cell cytotoxicity and ADCC activity were detected in 50 % of patients. Percentage of NK cells in LAK infusions were correlated with the R- and GA101-induced ADCC. Our results indicate that the combination of R or GA101 and LAK cells should be an option as frontline maintenance therapy in patients with FL.

  5. The influence of tumor immunity suppressors on the effector stage of human and animal lymphokine-activated killer cells.

    Science.gov (United States)

    Abronina, I F; Indrova, M; Bubenic, J; Figurin, K M; Malakhova, N V; Bykovskaya, S N

    1993-01-01

    Spleen cells of tumor-bearing mice suppressed the cytolytic activity of syngeneic LAK cells when added to the mixture of LAK cells and target cells at the beginning of the cytotoxicity test. Spleen cells of MC 14 tumor-bearing mice acquired the suppressor potential as early as 10 days after tumor transplantation; the suppressor activity in the EL 4 and X63-Ag8.653 tumor-bearing animals was first revealed at the 30th day and manifested itself up to the 120th day. The suppressor activity was expressed in a dose-dependent manner, both by unfractionated spleen cells and nylon wool-passed and plastic-adherent sub-populations. Similar results were obtained during the analysis of anti-tumor immunity suppressors in bladder cancer patients. MNC, nylon wool-passed and plastic-adherent cells of patients with stages I-II disease suppressed the cytotoxicity of autologous LAK cells in 2/6 cases; all patients [4] with III-IV stage possessed such suppressor activity. Presumably, the tumor growth induces the activity of suppressor T cells and monocytes/macrophages. The suppressor activity can interfere with the antitumor effect of autologous (syngeneic) LAK cells at the effector stage.

  6. The Development of a Micro Assay for Natural Killer and Lymphokine-Activated Killer Activity and Its Use in Monitoring the Purification of an Interleukin-2 Inhibitor

    Science.gov (United States)

    1989-05-01

    malaise, weight gain, diarrhea, rash, arthralgia, myalgia, fluid retention, anemia , 6 hypotension, dyspnea, and hyperbilirubinemia (21-23). There was...inhibitor levels in humans with these autoimune diseases to determine if there was any correlation between the inhibitor levels and disease activity

  7. THE EFFECT OF PHENYLACETATE ON THE EXPANSION AND CYTOTOXIC ACTIVITY OF ADHERENT LAK CELLS FROM PATIENTS WITH HEPATOCELLULAR CARCINOMA

    Institute of Scientific and Technical Information of China (English)

    郑宁; 叶胜龙; 孙瑞霞; 赵燕; 汤钊猷

    2002-01-01

    Objective: To improve the preparation of adherent lymphokine-activated killer (A-LAK) cells and study the synergistic anti-tumor effect of phenylacetate (PA) and A-LAK cells. Methods:\tA-LAK cells were obtained from peripheral blood mononuclear cells (PBMC) of patients with hepatocellular carcinoma (HCC) by using L-phenylalanine methyl ester (PME) to deplete immunosuppressive monocytes. The proliferation of SMMC7721 cell line treated with PA was studied. A-LAK cells were treated with the supernatant of SMMC7721 cells which had been pretreated with PA and the changes of the proliferation and anti-tumor activity of A-LAK cells were investigated. Results: The expansion of A-LAK cells was significantly higher than that of non-adherent LAK (NA-LAK) cells as well as regular LAK cells. The growth of SMMC7721 cells was significantly suppressed by PA. The supernatant of cultured tumor cells intensively suppressed the proliferation and cytotoxicity of A-LAK cells, but the suppressive effect of supernatant treated with PA previously was decreased. Conclusion: A-LAK cells could be simply prepared by using PME, and showed a synergistic anti-tumor effect with the combination of PA.

  8. Activation of killer cells with soluble gastric cancer antigen combined with anti-CD3 McAb

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    @@ INTRODUCTION There have been many reports on cancer therapy with lymphokine-activated killer (LAK) cells and interleukin-2 (IL-2), but the proliferative response and anti-cancer effect of LAK cells are dependent on IL-2 dose. Other methods to improve the anti-tumor activity of cytotoxic T cells by activation with anti-CD3 McAb in conjunction with IL-2 are being investigated in recent years. In this study, we attempted to explore the physiologic and biologic effects of T-killer cells (TAK) co-stimulated with soluble gastric cancer antigen, anti-CD3 McAb and IL-2.

  9. Asbestos fibres inhibit the in vitro activity of lymphokine-activated killer (LAK) cells from healthy individuals and patients with malignant mesothelioma.

    Science.gov (United States)

    Manning, L S; Davis, M R; Robinson, B W

    1991-01-01

    Asbestos exposure is associated with an increased incidence of several malignancies, including malignant mesothelioma (MM). This study evaluates the relationship between asbestos exposure and the in vitro generation and function of LAK cells, an immune effector cell population with powerful lytic activity against MM cells. Both serpentine (chrysotile) and amphibole (amosite and crocidolite) forms of asbestos fibres suppress LAK cell generation, viability (by 5-11%, P less than 0.02) and cell recovery (by 13-15%, P less than 0.02). However, the LAK cells generated in the presence of the amphiboles were as effective as unexposed cells in lysing both standard tumour cell targets (K562, 56.4% lysis versus 61.5%, respectively, P greater than 0.5; NS; Daudi, 60.5% lysis versus 64.5% P greater than 0.5; NS), and MM tumour cell targets (mean of three MM cell lines 48.3% versus 46.3%, P greater than 0.5; NS), whereas the function of LAK cells generated in the presence of chrysotile was significantly reduced against three out of the five tumour cell targets tested (P less than 0.03). In the presence of asbestos fibres, LAK cell function was reduced against all five tumour cell targets (P less than 0.01), irrespective of whether the cell donors were healthy individuals or patients with MM. NK cell activity was also suppressed (P less than 0.01). The serpentine form of asbestos, chrysotile, was significantly more suppressive of both effector cell functions than either of the amphiboles (P less than 0.01). These findings suggest that asbestos exposure may suppress the function and in some instances the generation of immune effector cell mechanisms, thereby increasing the risk of disease and malignancy. PMID:1846329

  10. Present and future of allogeneic natural killer cell therapy

    Directory of Open Access Journals (Sweden)

    Okjae eLim

    2015-06-01

    Full Text Available Natural killer (NK cells are innate lymphocytes that are capable of eliminating tumor cells and are therefore used for cancer therapy. Although many early investigators used autologous NK cells, including lymphokine-activated killer cells, the clinical efficacies were not satisfactory. Meanwhile, human leukocyte antigen (HLA-haploidentical hematopoietic stem cell transplantation revealed the anti-tumor effect of allogeneic NK cells, and HLA-haploidentical, killer cell immunoglobulin-like receptor (KIR ligand-mismatched allogeneic NK cells are currently used for many protocols requiring NK cells. Moreover, allogeneic NK cells from non-HLA-related healthy donors have been recently used in cancer therapy. The use of allogeneic NK cells from non-HLA-related healthy donors allows the selection of donor NK cells with higher flexibility and to prepare expanded, cryopreserved NK cells for instant administration without delay for ex vivo expansion. In cancer therapy with allogeneic NK cells, optimal matching of donors and recipients is important to maximize the efficacy of the therapy. In this review, we summarize the present state of allogeneic NK cell therapy and its future directions.

  11. Suicide in serial killers.

    Science.gov (United States)

    Lester, David; White, John

    2010-02-01

    In a sample of 248 killers of two victims in America from 1900 to 2005, obtained from an encyclopedia of serial killers by Newton (2006), those completing suicide did not differ in sex, race, or the motive for the killing from those who were arrested.

  12. Killer "Killer Examples" for Design Patterns

    DEFF Research Database (Denmark)

    Caspersen, Michael Edelgaard; Alphonce, Carl; Decker, Adrienne

    2007-01-01

    Giving students an appreciation of the benefits of using design patterns and an ability to use them effectively in developing code presents several interesting pedagogical challenges. This paper discusses pedagogical lessons learned at the "Killer Examples" for Design Patterns and Objects First s...... series of workshops held at the Object Oriented Programming, Systems, Languages and Applications (OOPSLA) conference over the past four years. It also showcases three "killer examples" which can be used to support the teaching of design patterns.......Giving students an appreciation of the benefits of using design patterns and an ability to use them effectively in developing code presents several interesting pedagogical challenges. This paper discusses pedagogical lessons learned at the "Killer Examples" for Design Patterns and Objects First...

  13. Classifying serial killers.

    Science.gov (United States)

    Promish, D I; Lester, D

    1999-11-01

    We attempted to match the appearance and demeanor of 27 serial killers to the postmortem 'signatures' found on their victims' bodies. Our results suggest that a link may exist between postmortem signatures and two complementary appearance-demeanor types.

  14. A KILLER WITH LOVE

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Leon is a 1994 French action film. This movie is about a tough girl named Mathilda who wants to become a professional killer when her entire families are killed by a vicious government agent. At the same time, she meets the man-Leon, a professionally paid killer, who she chooses as her teacher. Eventually, she becomes soul mate of Leon. At the end of the film, Leon even dies for saving Mathlida.

  15. The Violence of Collection: "Indian Killer"'s Archives

    Science.gov (United States)

    Dean, Janet

    2008-01-01

    At the close of Sherman Alexie's "Indian Killer," in a final chapter titled "Creation Story," a killer carries a backpack containing, among other things, "dozens of owl feathers, a scrapbook, and two bloody scalps in a plastic bag." Readers schooled in the psychopathologies of real and fictional serial killers will be familiar with the detail:…

  16. Grass and weed killer poisoning

    Science.gov (United States)

    ... medlineplus.gov/ency/article/002838.htm Grass and weed killer poisoning To use the sharing features on this page, please enable JavaScript. Many weed killers contain dangerous chemicals that are harmful if ...

  17. Clemency Pogue: Fairy Killer

    Science.gov (United States)

    Petty, J. T.

    2004-01-01

    This young adult author claims his most enjoyable task as a writer is "intellectual danger, getting into other people's trouble." He asks his readers not to trust him, and then, as evidence, tempts us with a look at a chapter from "Clemency Pogue: Fairy Killer."

  18. Biology Myth-Killers

    Science.gov (United States)

    Lampert, Evan

    2014-01-01

    "Biology Myth-Killers" is an activity designed to identify and correct common misconceptions for high school and college introductory biology courses. Students identify common myths, which double as biology misconceptions, and use appropriate sources to share the "truth" about the myths. This learner-centered activity is a fun…

  19. Delaware's first serial killer.

    Science.gov (United States)

    Inguito, G B; Sekula-Perlman, A; Lynch, M J; Callery, R T

    2000-11-01

    The violent murder of Shirley Ellis on November 29, 1987, marked the beginning of the strange and terrible tale of Steven Bryan Pennell's reign as the state of Delaware's first convicted serial killer. Three more bodies followed the first victim, and all had been brutally beaten and sadistically tortured. The body of a fifth woman has never been found. State and county police collaborated with the FBI to identify and hunt down their suspect, forming a task force of over 100 officers and spending about one million dollars. Through their knowledge and experience with other serial killers, the FBI was able to make an amazingly accurate psychological profile of Delaware's serial killer. After months of around-the-clock surveillance, Steven Pennell was arrested on November 29, 1988, one year to the day after the first victim was found. Pennell was found guilty in the deaths of the first two victims on November 29, 1989, and plead no contest to the murder of two others on October 30, 1991. Still maintaining his innocence, he asked for the death penalty so that he could spare his family further agony. Steven Pennell was executed by lethal injection on March 15, 1992.

  20. Effects of Ganoderma lucidum polysaccharides on proliferation and cytotoxicity of cytokine-induced killer cells

    Institute of Scientific and Technical Information of China (English)

    Xiao-ling ZHU; Zhi-bin LIN

    2005-01-01

    Aim: To study the effects (and the mechanisms thereof) of Ganoderma lucidum polysaccharides (Gl-PS) on the proliferation and the anti-tumor activity of cytokineinduced killer (CIK) cells, and to make use of CIK cells as a means to investigate the interactions between Gl-PS and cytokines. Methods: CIK cells were prepared by using the standard protocol as a positive control. Experimental groups also underwent the standard protocol, except that Gl-PS (400 mg/L or 100 mg/L) was added and the dose of anti-CD3 and interleukin-2 they received was reduced by 50% and 75%, respectively. For negative controls, Gl- PS in the experimental protocol was replaced with soluble starch or methylcellulose (400 mg/L or 100 mg/L).CIK cell proliferation, cytotoxicity, and phenotype weredetermined by using the Trypan blue exclusion method, MTT assay, and flow cytometry. Results: By synergizing cytokines, Gl-PS (400 mg/L or 100 mg/L) could decrease the amount of cytokine in lymphokine activated killer (LAK) cells and CIK cells culture, but had no significant effect on the proliferation, cytotoxicity, or phenotype of LAK cells, or CIK cells induced by cytokines at higher doses alone, in which CIK cells expanded about 80-fold and the main effectors, CD3+NK1.1+ cells, expanded by more than 15%. The cytotoxicity of CIK cells in experimental groups was 79.3%±4.7%, 76.9%±6.8% versus the positive control 80.7%±6.8% against P815 (P>0.05)and 88.9%±5.5%, 84.7%±7.9% versus the positive control 89.8%±4.5% against YAC-1 (P>0.05). The activity of Gl-PS could mostly be blocked by anti-CR3.Conclusion: Gl-PS was shown to be a promising biological response modifier and immune potentiator. The effect of Gl-PS on CIK cells is possibly mediated primarily through complement receptor type 3.

  1. Photodynamic Treatment of Tumor with Bacteria Expressing KillerRed.

    Directory of Open Access Journals (Sweden)

    Libo Yan

    Full Text Available Photodynamic therapy (PDT is a cancer treatment modality in which a photosensitizing dye is administered and exposed to light to kill tumor cells via the production of reactive oxygen species (ROS. A fundamental obstacle for PDT is the low specificity for staining solid tumors with dyes. Recently, a tumor targeting system guided by anaerobic bacteria was proposed for tumor imaging and treatment. Here, we explore the feasibility of the genetically encoded photosensitizer KillerRed, which is expressed in Escherichia coli, to treat tumors. Using nitroblue tetrazolium (NBT, we detected a lengthy ROS diffusion from the bodies of KillerRed-expressing bacteria in vitro, which demonstrated the feasibility of using bacteria to eradicate cells in their surroundings. In nude mice, Escherichia coli (E. coli expressing KillerRed (KR-E. coli were subcutaneously injected into xenografts comprising CNE2 cells, a human nasopharyngeal carcinoma cell line, and HeLa cells, a human cervical carcinoma cell line. KR-E. coli seemed to proliferate rapidly in the tumors as observed under an imaging system. When the intensity of fluorescence increased and the fluorescent area became as large as the tumor one day after KR-E. coli injection, the KR-E. coli-bearing tumor was irradiated with an orange light (λ = 540-580 nm. In all cases, the tumors became necrotic the next day and were completely eliminated in a few days. No necrosis was observed after the irradiation of tumors injected with a vehicle solution or a vehicle carrying the E. coli without KillerRed. In successfully treated mice, no tumor recurrence was observed for more than two months. E. coli genetically engineered for KillerRed expression are highly promising for the diagnosis and treatment of tumors when the use of bacteria in patients is cleared for infection safety.

  2. Natural killer cells in psoriasis.

    LENUS (Irish Health Repository)

    Tobin, A M

    2012-02-01

    Psoriasis is one of the most common immune-mediated disorders. There is evidence that it is mediated by Th1 and, more recently, Th17 cells. The cytokine pattern, particularly the dominance of TNF-alpha, implicates the innate immune system in psoriasis pathogenesis. Of the many components of the innate immune system known to be involved in psoriatic lesions, natural killer and natural killer T cells appear to have a unique role. We review the evidence supporting a role for natural killer cells in psoriasis.

  3. Killer Whale Genetic Data - Southern resident killer whale pedigree analysis

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — In this project, we are using genetic variation to infer mating patterns in the southern killer whale community. In Canada, this population was listed as threatened...

  4. HIV Medication Adherence

    Science.gov (United States)

    HIV Treatment HIV Medication Adherence (Last updated 3/2/2017; last reviewed 3/2/2017) Key Points Medication adherence means sticking firmly to ... Before and After Starting HIV Medicines . What is medication adherence? Adherence means “to stick firmly.” So for ...

  5. Antitumor activities of human autologous cytokine-induced killer (CIK) cells against hepatocellular carcinoma cells in vitro and in vivo

    Institute of Scientific and Technical Information of China (English)

    Fu-Sheng Wang; Ming-Xu Liu; Bing Zhang; Ming Shi; Zhou-Yun Lei; Wen-Bing Sun; Qing-You Du; Ju-Mei Chen

    2002-01-01

    AIM: To characterize the anticancer function of cytokine-induced killer cells (CIK) and develop an adoptiveimmunotherapy for the patients with primary hepatocellularcarcinoma (HCC), we evaluated the proliferation rate,phenotype and the antitumor activity of human CIK cellsfrom healthy donors and HCC patients in vitro and in vivo.METHODS: Peripheral blood mononuclear cells (PBMC) fronhealthy donors and patients with primary HCC were incubatedin vitro and induced into ClK cells in the presence of variouscytokines such as interferon-gamma (IFN-γ), interleukin-1(IL-1), IL-2, and monoclonal antibody (mAb) against CD3.The phenotype and characterization of CIK cells wereidentified by flow cytometric analysis. The cytotoxicity of CIKcells was determined by 51 Cr release assay.RESULTS: The CIK cells were shown to be a heterogeneouspopulation with different cellular phenotypes. Thepercentage of CD3+/CD56+ positive cells, the dominanteffector cells, in total CIK cells from healthy donors andHCC patients, significantly increased from 0.1-0.13 % at day0 to 19.0-20.5 % at day 21 incubation, which suggested thatthe CD3+ CD56+ positive cells proliferated faster than othercell populations of CIK cells in the protocol used in thisstudy. After 28 day in vitro incubation, the ClK cells frompatients with HCC and healthy donors increased by morethan 300-fold and 500-fold in proliferation cell number,respectively. CIK cells originated from HCC patientspossessed a higher in vitro antitumor cytotoxic activity onautologous HCC cells than the autologous lymphokine-activated killer (LAK) cells and PBMC cells. In in vivoanimal experiment, CIK cells had stronger effects on theinhibition of tumor growth in Balb/c nude mice bearing BEL-7402-producing tumor than LAK cells (mean inhibitory rate,84.7 % vs 52.8 %, P < 0.05) or PBMC (mean inhibitoryrate, 84.7% vs37.1%, P<0.01).CONCLUSION: Autologous CIK cells are of highly efficientcytotoxic effector cells against primary hepatocellularcarcinoma

  6. Keiko, Killer Whale. [Lesson Plan].

    Science.gov (United States)

    Discovery Communications, Inc., Bethesda, MD.

    This lesson plan presents activities designed to help students understand that Keiko, the killer whale, lived for a long time in an aquarium and had to be taught to live independently; and that computer users can get updates on how Keiko is doing. The main activity of the lesson involves middle school students working in small groups to produce a…

  7. Killer behavior within the Candida parapsilosis complex.

    Science.gov (United States)

    Robledo-Leal, Efrén; Elizondo-Zertuche, Mariana; Villarreal-Treviño, Licet; Treviño-Rangel, Rogelio de J; García-Maldonado, Nancy; Adame-Rodríguez, Juan M; González, Gloria M

    2014-11-01

    A group of 29 isolates of Candida parapsilosis sensu stricto, 29 of Candida orthopsilosis, and 4 of Candida metapsilosis were assayed for the presence of killer activity using Saccharomyces cerevisiae ATCC 26609 as a sensitive strain. All C. metapsilosis isolates showed killer activity at 25 °C while strains of C. parapsilosis sensu stricto or C. orthopsilosis did not exhibit this activity. Sensitivity to killer toxins was evaluated using a set of previously reported killer strains of clinical origin. Only 11 isolates of the C. parapsilosis complex were inhibited by at least one killer isolate without resulting in any clear pattern, except for C. parapsilosis sensu stricto ATCC 22019, which was inhibited by every killer strain with the exception of C. parapsilosis and Candida utilis. The lack of sensitivity to killer activity among isolates of the genus Candida suggests that their toxins belong to the same killer type. Differentiation of species within the C. parapsilosis complex using the killer system may be feasible if a more taxonomically diverse panel of killer strains is employed.

  8. Killer whale prey - Determining prey selection by southern resident killer whales (SRKW)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Prey selectivity by southern resident killer whales is being determined by analyses of fish scales and tissue from predation events and feces. Information on killer...

  9. An Industrial THz Killer Application?

    CERN Document Server

    van Mechelen, Dook

    2015-01-01

    Terahertz technology is mature enough for large-volume sensing applications. However, Dook van Mechelen says there are a few hurdles preventing its industrial debut. THz spectroscopy has a number of advantages that point to abundant industrial applications, in areas such quality control, security and biomedical imaging. Yet despite those advantages, the search for a THz "killer application"--a novel, innovative use with a business case strong enough to bring the technology into the industrial mainstream--has remained fruitless, and even the hope of finding such an application has begun to falter. Why has a killer app for THz radiation been so elusive? And how can the road to industrial application of this versatile technology be cleared?

  10. Adherence to antidepressants

    Directory of Open Access Journals (Sweden)

    Abimbola Farinde

    2013-01-01

    Full Text Available While major depression is considered a frequent mental illness there are ongoing reports of high non-adherence to antidepressant medications which places suffers at high risk for relapse, recurrence, or greater impairment,. The World Health Organization (WHO defines adherence as the extent to which a person′s behavior (e.g. taking medications can align with the agreed recommendations of a health care provider. Unfortunately while patient may recognize the importance of adherence to antidepressant medications the majority of patients do not adhere to their prescribed antidepressants. Some of the factors that may contribute to or lead to non-adherence include knowingly or unknowingly missing doses, taking extra doses, delaying administration times, or taking drug holidays. Pharmacists have the unique ability to deter non-adherence through the performance of continuous assessment and monitoring of adherence in this population given these accessibility. Additionally, pharmacists are able to develop therapeutic alliances with patients that can help to increase the likelihood of achieving positive patient outcomes. Antidepressant non-adherence can be viewed as a significant public health concern so it is important for patients to be educated about the importance of adherence, and health care professionals should be aware of factors or patient characteristics that can serve as barriers to non-adherence.

  11. Phototoxic effects of lysosome-associated genetically encoded photosensitizer KillerRed

    Science.gov (United States)

    Serebrovskaya, Ekaterina O.; Ryumina, Alina P.; Boulina, Maria E.; Shirmanova, Marina V.; Zagaynova, Elena V.; Bogdanova, Ekaterina A.; Lukyanov, Sergey A.; Lukyanov, Konstantin A.

    2014-07-01

    KillerRed is a unique phototoxic red fluorescent protein that can be used to induce local oxidative stress by green-orange light illumination. Here we studied phototoxicity of KillerRed targeted to cytoplasmic surface of lysosomes via fusion with Rab7, a small GTPase that is known to be attached to membranes of late endosomes and lysosomes. It was found that lysosome-associated KillerRed ensures efficient light-induced cell death similar to previously reported mitochondria- and plasma membrane-localized KillerRed. Inhibitory analysis demonstrated that lysosomal cathepsins play an important role in the manifestation of KillerRed-Rab7 phototoxicity. Time-lapse monitoring of cell morphology, membrane integrity, and nuclei shape allowed us to conclude that KillerRed-Rab7-mediated cell death occurs via necrosis at high light intensity or via apoptosis at lower light intensity. Potentially, KillerRed-Rab7 can be used as an optogenetic tool to direct target cell populations to either apoptosis or necrosis.

  12. Modus operandi of female serial killers.

    Science.gov (United States)

    Wilson, W; Hilton, T

    1998-04-01

    The modus operandi of female serial killers was examined from a chronology of 58 cases in America and 47 cases in 17 other countries, compiled over 25-year intervals. Female serial killers in other countries accounted for a disproportionately greater number of victims, but those in America managed a longer killing career when associated with a low profile modus operandi.

  13. Notorious Cases of Serial Killers

    Directory of Open Access Journals (Sweden)

    Iosub Elena-Cătălina

    2014-05-01

    Full Text Available The reconstruction of a death scene provides an overall picture of the crime and will indicate the murder as an event or one of a series of events and also the criminal. But when the criminal is declared a serial killer, many questions are raised up. How could a person kill some else without a reason or why people react in such a disorganized way and become so brutal or what made them act like that and so many questions with also so many answers. This project explains the psychology of a murderer, his own way of thinking and acting by presuming that we may accurately discover what is in their minds when they kill. It is about a very complex issue regarding murder investigations, biological factors and psychological profile of a serial killer. Dealing with this problem we will at last reach to the question that could solve finally the puzzle: ―Are serial murderers distorted reflections of society's own values?

  14. An Adherence Semigroup

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    By a dynamical system we mean a pair of (X,T), where X is compact Hausdorff space. In this paper we define an adherence semigroup A(X,T)∈XX, which is the set of all pointwise limit of subnets of (Tn)n∈N. We will prove some commonness between adherence semigroup and Ellis semigroup.

  15. Evolutionary vignettes of natural killer cell receptors.

    Science.gov (United States)

    Sambrook, Jennifer G; Beck, Stephan

    2007-10-01

    The discovery of novel immune receptors has led to a recent renaissance of research into the innate immune system, following decades of intense research of the adaptive immune system. Of particular interest has been the discovery of the natural killer (NK) cell receptors which, depending on type, interact with classical or non-classical MHC class I antigens of the adaptive immune system, thus functioning at the interface of innate and adaptive immunity. Here, we review recent progress with respect to two such families of NK receptors, the killer immunoglobulin-like receptors (KIRs) and the killer cell lectin-like receptors (KLRs), and attempt to trace their evolution across vertebrates.

  16. Deficient natural killer cell function in preeclampsia

    Energy Technology Data Exchange (ETDEWEB)

    Alanen, A.; Lassila, O.

    1982-11-01

    Natural killer cell activity of peripheral blood lymphocytes was measured against K-562 target cells with a 4-hour /sup 51/Cr release assay in 15 primigravid women with preeclamptic symptoms. Nineteen primigravid women with an uncomplicated pregnancy and 18 nonpregnant women served as controls. The natural killer cell activity of preeclamptic women was observed to be significantly lower than that of both control groups. Natural killer cells in preeclamptic women responded normally to augmentation caused by interferon. These findings give further evidence for the participation of the maternal immune system in this pregnancy disorder.

  17. Serial killer: il database mondiale

    Directory of Open Access Journals (Sweden)

    Gaetano parente

    2016-07-01

    Full Text Available The complex and multisided study of serial killers is partly made difficult by the current level of progress that has led these deviant people to evolve in relation to the aspects of shrewdness (concerning the staging and mobility. Despite the important work of some scholars who proposed important theories, all this shows that, concerning serial murders, it is still particularly frequent not to pay attention to links among homicides committed by the same person but in different parts of the world. It is therefore crucial to develop a worldwide database that allows all police forces to access information collected on crime scenes of murders which are particularly absurd and committed without any apparent reason. It will then be up to the profiler, through ad hoc and technologically advanced tools, to collect this information on the crime scene that would be made available to all police forces thanks to the worldwide database.

  18. HIV Treatment Adherence

    Science.gov (United States)

    ... Viral Suppression Doctor, Clinical & Dental Visits Treatment Adherence Mental Health Substance Abuse Issues Sexual Health Nutrition & Food Safety Exercise Immunizations Aging with HIV/AIDS Women’s Health Housing ...

  19. EFFECTS OF LOW DOSE RADIATION ON CYTOTOXICITY OF CORD BLOOD LAK CELLS AGAINST TARGET TUMOR CELLS IN VITRO

    Institute of Scientific and Technical Information of China (English)

    刘长安; 杨光; 管增伟; 贾延珍

    2002-01-01

    Lymphokine-activated killer cells (LAK) are functional lymphocytes which, after short periods of in vitro liquid culture with interleukin-2 (IL-2), kill a variety of autologous or heterolougous tumor cells both sensitive

  20. Stochastic modeling of a serial killer.

    Science.gov (United States)

    Simkin, M V; Roychowdhury, V P

    2014-08-21

    We analyze the time pattern of the activity of a serial killer, who during 12 years had murdered 53 people. The plot of the cumulative number of murders as a function of time is of "Devil's staircase" type. The distribution of the intervals between murders (step length) follows a power law with the exponent of 1.4. We propose a model according to which the serial killer commits murders when neuronal excitation in his brain exceeds certain threshold. We model this neural activity as a branching process, which in turn is approximated by a random walk. As the distribution of the random walk return times is a power law with the exponent 1.5, the distribution of the inter-murder intervals is thus explained. We illustrate analytical results by numerical simulation. Time pattern activity data from two other serial killers further substantiate our analysis.

  1. Natural born killers?: the development of the sexually sadistic serial killer.

    Science.gov (United States)

    Johnson, B R; Becker, J V

    1997-01-01

    Today's society seems enthralled with serial killers in the news and the media. Forensic psychiatrists often interview serial killers after they have been caught. There are retrospective studies and case reports of individuals who have committed sexually sadistic serial murders. However, there exists a dearth of case reports on adolescents who have expressed serious fantasies about becoming serial killer prior to actualizing their fantasy. This article presents nine clinical cases of 14- to 18-year-olds who have clinically significant fantasies of becoming a serial killer. Similarities exist in these adolescent cases when compared with retrospective studies and case reports of serial killers on the role of sexually sadistic fantasies and actual killings. Since it has been established that sexual paraphilias may develop at a young age, one can surmise that sadistic paraphilias may also develop in some adolescents. The question is posed, can we predict which of these adolescents may go on to actually become serial killers? This article focuses on how the sexually sadistic fantasy can eventually be acted out and possible motives for the act to be repeated multiple times. Finally, recommendations are made about assessing and treating a youngster who expresses violent sexually sadistic killing fantasies so that attempts can be made to interrupt the progression to actual killing.

  2. Influence of human cytomegalvirus on the expression of natural-killer group 2-members receptors on the natural killer cells

    Institute of Scientific and Technical Information of China (English)

    顾绍庆

    2014-01-01

    Objective To examine the effect of human cytomegalovirus(CMV)on the expressions of natural-killer group2-members(NKG2),including natural-killer group 2-member A(NKG2A),natural-killer group 2-member C(NKG2C)and natural-killer group 2-member D(NKG2D)receptors on the natural killer(NK)cells.Methods NK cells were isolated from the peripheral blood mononuclear cells of 20 healthy individuals using

  3. Killer plasma ready to devour the Earth

    CERN Multimedia

    Uhlig, R; Highfield, R

    2001-01-01

    A chance fluctuation of the 'vacuum universe' could disintegrate all atoms, according to CERN associate, Dr Allanach. Alternatively, so-called killer strangelets could "eat up the universe from the inside out". Should either of these scenarios occur, the most likely starting point is the Relativistic Heavy Ion Collider in Long Island, New York state (1 page).

  4. The evolution of natural killer cell receptors

    NARCIS (Netherlands)

    Carrillo-Bustamante, Paola; Kesmir, C.; de Boer, Rob J

    2016-01-01

    Natural killer (NK) cells are immune cells that play a crucial role against viral infections and tumors. To be tolerant against healthy tissue and simultaneously attack infected cells, the activity of NK cells is tightly regulated by a sophisticated array of germline-encoded activating and inhibitin

  5. Positive selection on the killer whale mitogenome

    DEFF Research Database (Denmark)

    Foote, Andrew David; Morin, Phillip A; Durban, John W;

    2011-01-01

    Mitochondria produce up to 95 per cent of the eukaryotic cell's energy. The coding genes of the mitochondrial DNA may therefore evolve under selection owing to metabolic requirements. The killer whale, Orcinus orca, is polymorphic, has a global distribution and occupies a range of ecological niches...

  6. The KP4 killer protein gene family

    Science.gov (United States)

    Killer protein 4 (KP4) is a well studied toxin secreted by the maize smut fungus Ustilago maydis that kills sensitive Ustilago strains as well as inhibits Fusarium and plant root growth. This small, cysteine rich protein is encoded by a virus that depends on host survival for replication. KP4 functi...

  7. 'Killer' character of yeasts isolated from ethanolic fermentations

    Directory of Open Access Journals (Sweden)

    Ceccato-Antonini Sandra Regina

    1999-01-01

    Full Text Available The number of killer, neutral and sensitive yeasts was determined from strains isolated from substrates related to alcoholic fermentations. From 113 isolates, 24 showed killer activity against NCYC 1006 (standard sensitive strain, while 30 were sensitive to NCYC 738 (standard killer strain, and 59 had no reaction in assays at 25-27°C. Two wild yeast strains of Saccharomyces cerevisiae and one of Candida colliculosa were tested against 10 standard killer strains and one standard sensitive strain in a cell x cell and well-test assays at four different pHs. None of the isolates displayed strong killer activity or were sensitive to the standard strains. All belonged to the neutral type. It was concluded that although the number of killer strains was high, this character cannot be used to protect ethanol fermentation processes against yeast contaminants like those which form cell clusters.

  8. Stochastic modeling of a serial killer

    CERN Document Server

    Simkin, M V

    2012-01-01

    We analyze the time pattern of the activity of a serial killer, who during twelve years had murdered 53 people. The plot of the cumulative number of murders as a function of time is of "Devil's staircase" type. The distribution of the intervals between murders (step length) follows a power law with the exponent of 1.4. We propose a model according to which the serial killer commits murders when neuronal excitation in his brain exceeds certain threshold. We model this neural activity as a branching process, which in turn is approximated by a random walk. As the distribution of the random walk return times is a power law with the exponent 1.5, the distribution of the inter-murder intervals is thus explained. We confirm analytical results by numerical simulation.

  9. Viral Evasion of Natural Killer Cell Activation

    OpenAIRE

    Yi Ma; Xiaojuan Li; Ersheng Kuang

    2016-01-01

    Natural killer (NK) cells play a key role in antiviral innate defenses because of their abilities to kill infected cells and secrete regulatory cytokines. Additionally, NK cells exhibit adaptive memory-like antigen-specific responses, which represent a novel antiviral NK cell defense mechanism. Viruses have evolved various strategies to evade the recognition and destruction by NK cells through the downregulation of the NK cell activating receptors. Here, we review the recent findings on viral...

  10. Representation of the serial killer on the Italian Internet.

    Science.gov (United States)

    Villano, P; Bastianoni, P; Melotti, G

    2001-10-01

    The representation of serial killers was examined from the analysis of 317 Web pages in the Italian language to study how the psychological profiles of serial killers are described on the Italian Internet. The correspondence analysis of the content of these Web pages shows that in Italy the serial killer is associated with words such as "monster" and "horror," which suggest and imply psychological perversion and aberrant acts. These traits are peculiar for the Italian scenario.

  11. Is killer whale dialect evolution random?

    Science.gov (United States)

    Filatova, Olga A; Burdin, Alexandr M; Hoyt, Erich

    2013-10-01

    The killer whale is among the few species in which cultural change accumulates over many generations, leading to cumulative cultural evolution. Killer whales have group-specific vocal repertoires which are thought to be learned rather than being genetically coded. It is supposed that divergence between vocal repertoires of sister groups increases gradually over time due to random learning mistakes and innovations. In this case, the similarity of calls across groups must be correlated with pod relatedness and, consequently, with each other. In this study we tested this prediction by comparing the patterns of call similarity between matrilines of resident killer whales from Eastern Kamchatka. We calculated the similarity of seven components from three call types across 14 matrilines. In contrast to the theoretical predictions, matrilines formed different clusters on the dendrograms made by different calls and even by different components of the same call. We suggest three possible explanations for this phenomenon. First, the lack of agreement between similarity patterns of different components may be the result of constraints in the call structure. Second, it is possible that call components change in time with different speed and/or in different directions. Third, horizontal cultural transmission of call features may occur between matrilines.

  12. Clinicopathologic features of intestinal natural killer/T-cell lymphoma

    Institute of Scientific and Technical Information of China (English)

    周军

    2013-01-01

    Objective To study the clinicopathologic features,diagnosis and differential diagnosis of intestinal natural killer(NK)/T-cell lymphoma.Methods The clinical features,histopathology,immunohistochemical

  13. A psychological profile of a serial killer: a case report.

    Science.gov (United States)

    Dogra, T D; Leenaars, Antoon A; Chadha, R K; Manju, Mehta; Lalwani, Sanjeev; Sood, Mamta; Lester, David; Raina, Anupuma; Behera, C

    2012-01-01

    Serial killers have always fascinated society. A serial killer is typically defined as a perpetrator who murders three or more people over a period of time. Most reported cases of serial killers come from the United States and Canada. In India, there are few reported cases. We present, to the best of our knowledge, the first Indian case in the literature. The present case is of a 28-year-old man, Surinder Koli. The Department of Forensic Medicine & Toxicology, All India Institute of Medical Sciences, New Delphi handled the forensic study. We present a most unique psychological investigation into the mind of a serial killer.

  14. Adherence as a language game.

    Science.gov (United States)

    Kolberg, Espen Skarstein

    2017-03-02

    Non-adherence, i.e. medication intake behavior not corresponding with agreed recommendations, is associated with increased morbidity and death, and it has been estimated that as many as 50% of patients in developed countries are not taking their medications as prescribed. But even as efforts in improving medication adherence over the years have increased, results are inconsistent, with only a minority of clinical trials showing any improvement in both adherence and clinical outcome. Since patient education is central to promoting good medication adherence, and language is integral to education, perhaps an exploration of the meaning and use of language, using the philosophy of Ludwig Wittgenstein, is in order.

  15. Antihypertension medication adherence and associated factors at Dessie Hospital, North East Ethiopia, Ethiopia

    Directory of Open Access Journals (Sweden)

    Legese Chelkeba

    2013-06-01

    Full Text Available Hypertension is an overwhelming global challenge. Despite the development of many effective anti hypertensive drugs, target to reduce morbidity and mortality due to high blood pressures are reached in only a minor of patients in clinical practice. Poor adherence is one of the biggest obstacles in therapeutic control of blood pressures. There are complaints from patients and physicians that the poor result of actual antihypertensive drug therapies. Many people with age indifference are attacked by this “silent killer” or which results in target organ damage as a complication. The aim of this study was to assess the magnitude of adherence and the factors associated with non-adherence to anti-hypertensive medication. Cross sectional exclusively convenient study was conducted by using structured questionnaires consisting of open and closed-ended questions on patients diagnosed for hypertension and have already been on anti hypertensive medications at least for three months at Dessie Referral hospital from 20/01/2012 to 29/01/2012. A total of hundred hypertensive patients were screened from hundred six cases by the exclusive criteria and the overall incidence of anti-hypertensive medication non adherence was 26%. The study identifies reasons why patients don’t adherent with the drug regiments. Among Factors associated with non adherence were health system and health care provider poor interaction with patient and therapy factors like frustration and unwanted effect of the medication in the long run. There was indication of non adherence from the study area. Great emphasis should be placed on intervention strategies such as patient counseling and increasing awareness of the physicians, all other prescribers and health care providers at large about the non adherence of anti hypertensive drugs as well as the complication what comes due to this medication non adherence. [Int J Res Med Sci 2013; 1(3.000: 191-197

  16. [Adherence to psychopharmacological treatment: Psychotherapeutic strategies to enhance adherence].

    Science.gov (United States)

    Lencer, R; Korn, D

    2015-05-01

    Effective psychopharmacological medication with good tolerability represents the cornerstone of treatment for severe mental illness; however, the 1-year adherence rates are only approximately 50%. The term adherence emphasizes the collaborative responsibility of the clinician and the patient for a positive treatment outcome. Reasons for non-adherence are manifold and include patient-specific factors, such as self-stigmatization, lack of social and familial support, cognitive impairment and substance use besides insufficient effectiveness and the occurrence of side effects of the psychotropic drugs. To enhance adherence, both clinician and patient have to fully understand all the reasons for and against adherence to medication before a collaborative decision is made on future long-term treatment. A positive attitude towards medication critically depends on whether patients feel that the medication supports the attainment of the individual goals.

  17. Biologic Influences on Exercise Adherence.

    Science.gov (United States)

    Dishman, Rod K.

    1981-01-01

    Diagnostic profiles of 362 male participants in an exercise program were analyzed to determine the biological variables between exercise adherence and symptoms of coronary disease. Findings indicated that individuals with lower metabolic capacity tended to adhere longer, to be less fit, were leaner, and began with more symptoms related to coronary…

  18. The virally encoded killer proteins from Ustilago maydis

    Science.gov (United States)

    Several strains of Ustilago maydis, a causal agent of corn smut disease, exhibit a 'killer' phenotype that is due to persistent infection by double-stranded RNA Totiviruses. These viruses produce potent killer proteins that are secreted by the host. This is a rare example of virus/host symbiosis in ...

  19. Natural killer cells and HLA-G expression in the basal decidua of human placenta adhesiva.

    Science.gov (United States)

    van Beekhuizen, H J; Joosten, I; Lotgering, F K; Bulten, J; van Kempen, L C

    2010-12-01

    Retained placenta is caused by abnormal adherence of the placenta to the uterine wall, leading to delayed expulsion of the placenta and causing postpartum haemorrhage. The mildest form of retained placenta is the placenta adhesiva (PA), of which the cause is unknown. The aim of our study was to explore possible differences in immune response in the basal decidua between PA and control placentas (CP). We performed a descriptive analysis of immunohistochemical differences in 17 PA and 10 CP. Our results show that in PA the amount of uterine natural killer (uNK) cells is significantly reduced (0.2 uNK cell/standardised area) as compared to CP (9.8 uNK cell/standardised area, p placenta.

  20. East Africa’s Quick Killer

    Institute of Scientific and Technical Information of China (English)

    Maya; Reid

    2011-01-01

    HEALTH and politics don’t always mix.In January,as increasing numbers of returnees from North Sudan entered Southern Sudan to vote on a referendum for independence, the World Health Organization(WHO) reported that a major visceral leishmaniasis epidemic was in danger of breaking out.Incidences of the disease - the world’s second deadliest parasitic killer after malaria - had nearly doubled within the span of a month,according to case records from last November. WHO officials speculated that the surge was due to that fact that returnees typically did not have immunity against the disease.

  1. Photobleaching and phototoxicity of KillerRed in tumor spheroids induced by continuous wave and pulsed laser illumination.

    Science.gov (United States)

    Kuznetsova, Daria S; Shirmanova, Marina V; Dudenkova, Varvara V; Subochev, Pavel V; Turchin, Ilya V; Zagaynova, Elena V; Lukyanov, Sergey A; Shakhov, Boris E; Kamensky, Vladislav A

    2015-11-01

    The purpose of this study was to evaluate photobleaching of the genetically encoded photosensitizer KillerRed in tumor spheroids upon pulsed and continuous wave (CW) laser irradiation and to analyze the mechanisms of cancer cell death after the treatment. We observed the light-dose dependent mechanism of KillerRed photobleaching over a wide range of fluence rates. Loss of fluorescence was limited to 80% at light doses of 150 J/cm(2) and more. Based on the bleaching curves, six PDT regimes were applied for irradiation using CW and pulsed regimes at a power density of 160 mW/cm(2) and light doses of 140 J/cm(2) , 170 J/cm(2) and 200 J/cm(2). Irradiation of KillerRed-expressing spheroids in the pulsed mode (pulse duration 15 ns, pulse repetition rate 10 Hz) induced predominantly apoptotic cell death, while in the case of CW mode the cancer cells underwent necrosis. In general, these results improve our understanding of photobleaching mechanisms in GFP-like proteins and show the importance of appropriate selection of treatment mode for PDT with KillerRed. Representative fluorescence image of two KillerRed-expressing spheroids before and immediately after CW irradiation.

  2. Health Information Seeking and Cancer Screening Adherence Rates.

    Science.gov (United States)

    Shneyderman, Yuliya; Rutten, Lila J Finney; Arheart, Kristopher L; Byrne, Margaret M; Kornfeld, Julie; Schwartz, Seth J

    2016-03-01

    Effective screening tools are available for many of the top cancer killers in the USA. Searching for health information has previously been found to be associated with adhering to cancer screening guidelines, but Internet information seeking has not been examined separately. The current study examines the relationship between health and cancer Internet information seeking and adherence to cancer screening guidelines for breast, cervical, and colorectal cancer in a large nationally representative dataset. The current study was conducted using data from the Health Information National Trends Survey from 2003 and 2007. The study examined age-stratified models which correlated health and cancer information seeking with getting breast, cervical, and colorectal cancer screening on schedule, while controlling for several key variables. Internet health and cancer information seeking was positively associated with getting Pap screening on schedule, while information seeking from any sources was positively associated with getting colorectal screening on schedule. People who look for health or cancer information are more likely to get screened on schedule. Some groups of people, however, do not exhibit this relationship and, thus, may be more vulnerable to under-screening. These groups may benefit more from targeted interventions that attempt to engage people in their health care more actively.

  3. Modeling Natural Killer Cell Targeted Immunotherapies

    Science.gov (United States)

    Lopez-Lastra, Silvia; Di Santo, James P.

    2017-01-01

    Animal models have extensively contributed to our understanding of human immunobiology and to uncover the underlying pathological mechanisms occurring in the development of diseases. However, mouse models do not reproduce the genetic and molecular complexity inherent in human disease conditions. Human immune system (HIS) mouse models that are susceptible to human pathogens and can recapitulate human hematopoiesis and tumor immunobiology provide one means to bridge the interspecies gap. Natural killer cells are the founding member of the innate lymphoid cell family. They exert a rapid and strong immune response against tumor and pathogen-infected cells. Their antitumor features have long been exploited for therapeutic purposes in the context of cancer. In this review, we detail the development of highly immunodeficient mouse strains and the models currently used in cancer research. We summarize the latest improvements in adoptive natural killer (NK) cell therapies and the development of novel NK cell sources. Finally, we discuss the advantages of HIS mice to study the interactions between human NK cells and human cancers and to develop new therapeutic strategies.

  4. Immunobiology of natural killer cells. Volume II

    Energy Technology Data Exchange (ETDEWEB)

    Lotzova, E.; Herberman, R.B.

    1986-01-01

    This book provides a review of natural killer (NK) cell-mediated immunity in humans and experimental animal system. Topics for the volume include: In vivo activities of NK cells against primary and metastatic tumors in experimental animals; involvement of NK cells in human malignant disease; impaired NK cell profile in leukemia patients; in vivo modulation of NK activity in cancer patients; implications of aberrant NK cell activity in nonmalignant, chronic diseases; NK cell role in regulation of the growth and functions of hemopoietic and lymphoid cells; NK cells active against viral, bacterial, protozoan, and fungal infections; cytokine secretion and noncytotoxic functions of human large granular lymphocytes; augmentation of NK activity; regulation of NK cell activity by suppressor cells; NK cell cloning technology and characteristics of NK cell clones; comparison of antibody-dependent cellular cytotoxicity (ADCC) and NK activity, and index.

  5. Natural killer cells: In health and disease.

    Science.gov (United States)

    Mandal, Arundhati; Viswanathan, Chandra

    2015-06-01

    Natural killer (NK) cells constitute our bodies' frontline defense system, guarding against tumors and launching attacks against infections. The activities of NK cells are regulated by the interaction of various receptors expressed on their surfaces with cell surface ligands. While the role of NK cells in controlling tumor activity is relatively clear, the fact that they are also linked to various other disease conditions is now being highlighted. Here, we present an overview of the role of NK cells during normal body state as well as under diseased state. We discuss the possible utilization of these powerful cells as immunotherapeutic agents in combating diseases such as asthma, autoimmune diseases, and HIV-AIDS. This review also outlines current challenges in NK cell therapy.

  6. Final Critical Habitat for Southern Resident Killer Whales

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — A geospatial data set depicting the boundaries of marine areas designated as critical habitat under the Endangered Species Act (ESA) for Southern Resident killer...

  7. Gulf of Mexico killer whale photo-ID catalog

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Photo-identification data on killer whales occupying the northern Gulf of Mexico have been collected in association with large vessel surveys since 1991. Photographs...

  8. The eyeball killer: serial killings with postmortem globe enucleation.

    Science.gov (United States)

    Coyle, Julie; Ross, Karen F; Barnard, Jeffrey J; Peacock, Elizabeth; Linch, Charles A; Prahlow, Joseph A

    2015-05-01

    Although serial killings are relatively rare, they can be the cause of a great deal of anxiety while the killer remains at-large. Despite the fact that the motivations for serial killings are typically quite complex, the psychological analysis of a serial killer can provide valuable insight into how and why certain individuals become serial killers. Such knowledge may be instrumental in preventing future serial killings or in solving ongoing cases. In certain serial killings, the various incidents have a variety of similar features. Identification of similarities between separate homicidal incidents is necessary to recognize that a serial killer may be actively killing. In this report, the authors present a group of serial killings involving three prostitutes who were shot to death over a 3-month period. Scene and autopsy findings, including the unusual finding of postmortem enucleation of the eyes, led investigators to recognize the serial nature of the homicides.

  9. Antiproton cell experiment: antimatter is a better killer

    CERN Multimedia

    2006-01-01

    "European Organization for Nuclear Research is reporting that results from a three year study of antiprotons for neoplasm irrdiation showed a better cellular killer with a smaller lethal dose." (1,5 page)

  10. Adherence to Treatment of Phenylketonuria

    Directory of Open Access Journals (Sweden)

    Tatiane Alves Vieira

    2015-05-01

    Full Text Available Introduction: Phenylketonuria (PKU is caused by the deficient activity of phenylalanine hydroxylase. Aim: To identify the factors associated with treatment adherence among patients with PKU seen at a southern Brazil reference center. Methodology: A cross-sectional, outpatient-based study including 56 patients with PKU (median age, 12 years for whom a Phe-restrict diet plus specific metabolic formula have been prescribed. Patients were considered adherent or nonadherent depending on the median phenylalanine concentration for the 12 months prior to study and target levels of phenylalanine for each age range (<13 years = ≤360 µmol/L; ≥13 years = ≤900 µmol/L. Data were collected through a review of patient’s medical records and a set of interviews with patients and their relatives. Results: Eighteen patients (32.1%; ≥13 years, 11 were classified as treatment adherent. Among all factors analyzed, only mental retardation, living with parents, and level of maternal education were associated with adherence to treatment. Conclusion: Our findings reinforce the importance of the family as promoting factor for treatment adherence.

  11. Towards PDT with Genetically Encoded Photosensitizer KillerRed: A Comparison of Continuous and Pulsed Laser Regimens in an Animal Tumor Model.

    Directory of Open Access Journals (Sweden)

    Marina Shirmanova

    Full Text Available The strong phototoxicity of the red fluorescent protein KillerRed allows it to be considered as a potential genetically encoded photosensitizer for the photodynamic therapy (PDT of cancer. The advantages of KillerRed over chemical photosensitizers are its expression in tumor cells transduced with the appropriate gene and direct killing of cells through precise damage to any desired cell compartment. The ability of KillerRed to affect cell division and to induce cell death has already been demonstrated in cancer cell lines in vitro and HeLa tumor xenografts in vivo. However, the further development of this approach for PDT requires optimization of the method of treatment. In this study we tested the continuous wave (593 nm and pulsed laser (584 nm, 10 Hz, 18 ns modes to achieve an antitumor effect. The research was implemented on CT26 subcutaneous mouse tumors expressing KillerRed in fusion with histone H2B. The results showed that the pulsed mode provided a higher rate of photobleaching of KillerRed without any temperature increase on the tumor surface. PDT with the continuous wave laser was ineffective against CT26 tumors in mice, whereas the pulsed laser induced pronounced histopathological changes and inhibition of tumor growth. Therefore, we selected an effective regimen for PDT when using the genetically encoded photosensitizer KillerRed and pulsed laser irradiation.

  12. Evolution of male-killer suppression in a natural population.

    Directory of Open Access Journals (Sweden)

    Emily A Hornett

    2006-09-01

    Full Text Available Male-killing bacteria are widespread in arthropods, and can profoundly alter the reproductive biology of their host species. Here we detail the first case of complete suppression of a male killer. The nymphalid butterfly Hypolimnas bolina is infected with a strain of the bacterium Wolbachia, wBol1, which kills male host embryos in Polynesian populations, but does not do so in many areas of Southeast Asia, where both males and female adults are naturally infected, and wBol1-infected females produce a 1:1 sex ratio. We demonstrate that absence of male killing by wBol1 is associated with dominant zygotic suppression of the action of the male killer. Simulations demonstrate host suppressors of male-killer action can spread very rapidly, and historical data indicating the presence of male killing in Southeast Asia in the very recent past suggests suppressor spread has been a very recent occurrence. Thus, male killer/host interactions are much more dynamic than previously recognised, with rapid and dramatic loss of the phenotype. Our results also indicate that suppression can render male killers completely quiescent, leading to the conclusion that some species that do not currently express a male killer may have done so in the past, and thus that more species have had their biology affected by these parasites than previously believed.

  13. Study of Adherent Oxide Scales

    Science.gov (United States)

    1987-09-14

    The bond between alumina and NiCrAl substrate is intrinsically strong. The segregation of sulfur to the interface reduces bond strength, sulfur is...which laser-processing and minor element additions improve oxide scale adherence of a NiCrAl turbine coating composition. However, it was shown at the...adherence. However, significant observations were made with respect to the morphology of the oxide scale that forms on NiCrAl and NiCrAlY and these are

  14. Adherence with Preventive Medication in Childhood Asthma

    Directory of Open Access Journals (Sweden)

    Scott Burgess

    2011-01-01

    Full Text Available Suboptimal adherence with preventive medication is common and often unrecognised as a cause of poor asthma control. A number of risk factors for nonadherence have emerged from well-conducted studies. Unfortunately, patient report a physician's estimation of adherence and knowledge of these risk factors may not assist in determining whether non-adherence is a significant factor. Electronic monitoring devices are likely to be more frequently used to remind patients to take medication, as a strategy to motivate patients to maintain adherence, and a tool to evaluate adherence in subjects with poor disease control. The aim of this paper is to review non-adherence with preventive medication in childhood asthma, its impact on asthma control, methods of evaluating non-adherence, risk factors for suboptimal adherence, and strategies to enhance adherence.

  15. “It’s Always the Same, and It’s Always Different” Mythologisation and the Serial Killer in Henry: Portrait of a Serial Killer.

    OpenAIRE

    Smyth, David A.

    2015-01-01

    Serial killers are important in American horror because of their ability to exist between ‘myth’ and ‘reality’. The serial killer is one of the most important American myths, but it is one firmly rooted in real life: unlike Paul Bunyan or Superman, serial killers do exist. This essay examines the relationship between the ‘myth’ and the ‘reality’ of serial killers, and the complex relationship between the American public and the serial killer, using Henry: Portrait of a Serial K...

  16. Revving up natural killer cells and cytokine-induced killer cells against hematological malignancies

    Directory of Open Access Journals (Sweden)

    Gianfranco ePittari

    2015-05-01

    Full Text Available Natural killer (NK cells belong to innate immunity and exhibit cytolytic activity against infectious pathogens and tumor cells. NK-cell function is finely tuned by receptors that transduce inhibitory or activating signals, such as killer immunoglobulin-like receptors (KIR, NK Group 2 member D (NKG2D, NKG2A/CD94, NKp46 and others, and recognize both foreign and self-antigens expressed by NK-susceptible targets. Recent insights into NK-cell developmental intermediates have translated into a more accurate definition of culture conditions for the in vitro generation and propagation of human NK cells. In this respect, interleukin (IL-15 and IL-21 are instrumental in driving NK-cell differentiation and maturation, and hold great promise for the design of optimal NK-cell culture protocols.Cytokine-induced killer (CIK cells possess phenotypic and functional hallmarks of both T cells and NK cells. Similar to T cells, they express CD3 and are expandable in culture, while not requiring functional priming for in vivo activity, like NK cells. CIK cells may offer some advantages over other cell therapy products, including ease of in vitro propagation and no need for exogenous administration of IL-2 for in vivo priming.NK cells and CIK cells can be expanded using a variety of clinical-grade approaches, before their infusion into patients with cancer. Herein, we discuss GMP-compliant strategies to isolate and expand human NK and CIK cells for immunotherapy purposes, focusing on clinical trials of adoptive transfer to patients with hematological malignancies.

  17. Revving up Natural Killer Cells and Cytokine-Induced Killer Cells Against Hematological Malignancies

    Science.gov (United States)

    Pittari, Gianfranco; Filippini, Perla; Gentilcore, Giusy; Grivel, Jean-Charles; Rutella, Sergio

    2015-01-01

    Natural killer (NK) cells belong to innate immunity and exhibit cytolytic activity against infectious pathogens and tumor cells. NK-cell function is finely tuned by receptors that transduce inhibitory or activating signals, such as killer immunoglobulin-like receptors, NK Group 2 member D (NKG2D), NKG2A/CD94, NKp46, and others, and recognize both foreign and self-antigens expressed by NK-susceptible targets. Recent insights into NK-cell developmental intermediates have translated into a more accurate definition of culture conditions for the in vitro generation and propagation of human NK cells. In this respect, interleukin (IL)-15 and IL-21 are instrumental in driving NK-cell differentiation and maturation, and hold great promise for the design of optimal NK-cell culture protocols. Cytokine-induced killer (CIK) cells possess phenotypic and functional hallmarks of both T cells and NK cells. Similar to T cells, they express CD3 and are expandable in culture, while not requiring functional priming for in vivo activity, like NK cells. CIK cells may offer some advantages over other cell therapy products, including ease of in vitro propagation and no need for exogenous administration of IL-2 for in vivo priming. NK cells and CIK cells can be expanded using a variety of clinical-grade approaches, before their infusion into patients with cancer. Herein, we discuss GMP-compliant strategies to isolate and expand human NK and CIK cells for immunotherapy purposes, focusing on clinical trials of adoptive transfer to patients with hematological malignancies. PMID:26029215

  18. Transtornos de personalidade, psicopatia e serial killers Personality disorders, psychopathy and serial killers

    Directory of Open Access Journals (Sweden)

    Hilda C P Morana

    2006-10-01

    Full Text Available OBJETIVO: Apresentar as características básicas dos diversos transtornos específicos de personalidade, mas centrando-se no transtorno de personalidade anti-social, fazendo sua diferenciação com psicopatia. O estudo ainda se propõe a abordar a figura do serial killer, apontando a presença de aspectos psicopáticos no homicídio seriado. MÉTODO: Uma revisão bibliográfica foi feita no sentido de se abordar convergências e divergências entre diversos autores sobre um assunto tão polêmico, sobretudo quanto à viabilidade de tratamento dessa clientela forense. RESULTADOS: Enquanto o transtorno de personalidade anti-social é um diagnóstico médico, pode-se entender o termo "psicopatia", pertencente à esfera psiquiátrico-forense, como um "diagnóstico legal". Não se pode falar ainda de tratamento eficaz para os chamados "serial killers". CONCLUSÃO: Os transtornos de personalidade, especialmente o tipo anti-social, representam ainda hoje um verdadeiro desafio para a psiquiatria forense. O local mais adequado e justo para seus portadores, bem como recomendação homogênea e padronizada de tratamento são questões ainda não respondidas.OBJECTIVE: To illustrate the basic characteristics of several specific personality disorders, focusing mainly in antisocial personality disorder. The differences between antisocial personality disorder and psychopathy are highlighted. Serial killers and its psychopathic aspects are also discussed. METHOD: A bibliographic review was completed in order to outline convergences and divergences among different authors about this controversial issue, especially those concerning the possibility of treatment. RESULTS: While anti-social personality disorder is a medical diagnosis, the term "psychopathy" (which belongs to the sphere of forensic psychiatry may be understood as a "legal diagnosis". It is not still possible to identify an effective treatment for serial killers. CONCLUSION: Personality disorders

  19. Cutaneous natural killer/T-cell lymphoma.

    Science.gov (United States)

    Radonich, Michael A; Lazova, Rossitza; Bolognia, Jean

    2002-03-01

    Lymphomas are classified as either Hodgkin's or non-Hodgkin's. The 2 subtypes of non-Hodgkin's lymphoma that can present primarily in the skin are cutaneous T-cell lymphoma and cutaneous B-cell lymphoma, both of which tend to be low-grade malignant neoplasms. Recently another distinct subtype of lymphoma was discovered, the natural killer (NK)/T-cell lymphoma, which can involve the skin in a primary or secondary fashion. The NK/T-cell subtype of lymphoma is characterized by the expression of the NK-cell antigen CD56. These CD56(+) lymphomas are further subdivided into nasal NK/T-cell lymphomas that commonly present as midfacial destructive disease and non-nasal NK/T-cell lymphomas that often arise in extranodal locations, including the skin. We report a case of aggressive NK-cell leukemia/lymphoma with numerous secondary cutaneous lesions and review the clinical and histopathologic spectrum of non-nasal CD56(+) lymphomas, with an emphasis on the dermatologic findings.

  20. The evolution of natural killer cell receptors.

    Science.gov (United States)

    Carrillo-Bustamante, Paola; Keşmir, Can; de Boer, Rob J

    2016-01-01

    Natural killer (NK) cells are immune cells that play a crucial role against viral infections and tumors. To be tolerant against healthy tissue and simultaneously attack infected cells, the activity of NK cells is tightly regulated by a sophisticated array of germline-encoded activating and inhibiting receptors. The best characterized mechanism of NK cell activation is "missing self" detection, i.e., the recognition of virally infected or transformed cells that reduce their MHC expression to evade cytotoxic T cells. To monitor the expression of MHC-I on target cells, NK cells have monomorphic inhibitory receptors which interact with conserved MHC molecules. However, there are other NK cell receptors (NKRs) encoded by gene families showing a remarkable genetic diversity. Thus, NKR haplotypes contain several genes encoding for receptors with activating and inhibiting signaling, and that vary in gene content and allelic polymorphism. But if missing-self detection can be achieved by a monomorphic NKR system why have these polygenic and polymorphic receptors evolved? Here, we review the expansion of NKR receptor families in different mammal species, and we discuss several hypotheses that possibly underlie the diversification of the NK cell receptor complex, including the evolution of viral decoys, peptide sensitivity, and selective MHC-downregulation.

  1. Cytolysis of oligodendrocytes is mediated by killer (K) cells but not by natural killer (NK) cells.

    Science.gov (United States)

    Satoh, J; Kim, S U; Kastrukoff, L F

    1991-03-01

    The cytotoxic activity of killer (K) cells against enriched cultures of bovine oligodendrocytes (BOL) was investigated in multiple sclerosis (MS) and controls. Human K cells mediated cytotoxicity to primary cultures of BOL in the presence of anti-BOL antiserum in all study groups, while BOL were resistant to human natural killer (NK) cells. Cytotoxic activity was significantly reduced in MS when compared to age-matched normal controls but not when compared to other neurologic disease (OND) patients. K cell-mediated lysis of BOL could also be induced with anti-galactocerebroside antibody but not with other antibodies including those specific for OL antigens (myelin basic protein, proteolipid apoprotein, and 2',3'-cyclic nucleotide 3'-phosphodiesterase). Enrichment of the effector population indicated that antibody-dependent cell-mediated cytotoxicity (ADCC) to BOL was mediated by large granular lymphocytes, and the effector population was further characterized by flow cytometry. The effector cells mediating ADCC could be inhibited by protein A of Staphylococcus aureus, and by K562 cells in cold competition assay. These observations indicate that oligodendrocytes are resistant to NK cells but are susceptible to cytolysis mediated by K cells. This may represent a potentially important immune mechanism in the pathogenesis of MS.

  2. Natural killer cells and cancer: regulation by the killer cell Ig-like receptors (KIR).

    Science.gov (United States)

    Purdy, Amanda K; Campbell, Kerry S

    2009-12-01

    Natural killer (NK) cells are innate immune effector cells that make up approximately 10-15% of the peripheral blood lymphocytes in humans and are primarily involved in immunosurveillance to eliminate transformed and virally-infected cells. They were originally defined by their ability to spontaneously eliminate rare cells lacking expression of class I major histocompatibility complex (MHC-I) self molecules, which is commonly referred to as "missing self" recognition. The molecular basis for missing self recognition emerges from the expression of MHC-I-specific inhibitory receptors on the NK cell surface that tolerize NK cells toward normal MHC-I-expressing cells. By lacking inhibitory receptor ligands, tumor cells or virus-infected cells that have down-modulated surface MHC-I expression become susceptible to attack by NK cells. Killer cell Ig-like receptors (KIR; CD158) constitute a family of MHC-I binding receptors that plays a major role in regulating the activation thresholds of NK cells and some T cells in humans. Here, we review the multiple levels of KIR diversity that contribute to the generation of a highly varied NK cell repertoire and explain how this diversity can influence susceptibility to a variety of diseases, including cancer. We further describe strategies by which KIR can be manipulated therapeutically to treat cancer, through the exploitation of KIR/MHC-I ligand mismatch to potentiate hematopoietic stem cell transplantation and the use of KIR blockade to enhance tumor cell killing.

  3. Ex vivo generated natural killer cells acquire typical natural killer receptors and display a cytotoxic gene expression profile similar to peripheral blood natural killer cells

    NARCIS (Netherlands)

    Lehmann, D.; Spanholtz, J.; Osl, M.; Tordoir, M.; Lipnik, K.; Bilban, M.; Schlechta, B.; Dolstra, H.; Hofer, E.

    2012-01-01

    Ex vivo differentiation systems of natural killer (NK) cells from CD34+ hematopoietic stem cells are of potential importance for adjuvant immunotherapy of cancer. Here, we analyzed ex vivo differentiation of NK cells from cord blood-derived CD34+ stem cells by gene expression profiling, real-time RT

  4. SRKW seasonal occurence - Patterns of seasonal occurrence of Southern Resident Killer Whales

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Patterns of seasonal occurrence of Southern Resident Killer Whales (SRKW) throughout their range. Southern Resident Killer Whales are listed as a Distinct Population...

  5. Down-regulation of LAK cell-mediated cytotoxicity: cancer and ageing.

    Science.gov (United States)

    Bykovskaya, S N; Abronina, I F; Kupriyanova, T A; Bubenik, J

    1990-01-01

    A comparative study was made of the generation of lymphokine-activated killer (LAK) cells in patients with melanoma and healthy donors of different age groups. Significant reduction of effector cell cytotoxicity in patients following 72 h culture with 1,000 U/ml or recombinant IL-2 (rIL-2) as well as a decreased ability to generate LAK cells in elderly individuals were shown to be correlated with suppressor cell activation in rIL-2 stimulated cell population. Suppressor effect depends on monocytes and T-lymphocytes: partial abolition of suppression in LAK cells was observed following removal of adherent cells or treatment with OKT8 monoclonal antibodies and complement.

  6. Adherence to the Treatment in Psychiatric Patients

    Directory of Open Access Journals (Sweden)

    Mehmet Emin Demirkol

    2015-09-01

    Conclusion: Although medical treatments and drug industry develop day by day, there have been no changes in the treatment adherence ratios in the past years. To generate possible solutions, treatment adherence should be assessed in all clinical interviews and if patient is non-adherent this issue should be handled seriously. [Cukurova Med J 2015; 40(3.000: 555-568

  7. 50 CFR 226.206 - Critical habitat for the Southern Resident killer whale (Orcinus orca).

    Science.gov (United States)

    2010-10-01

    ... killer whale (Orcinus orca). 226.206 Section 226.206 Wildlife and Fisheries NATIONAL MARINE FISHERIES... CRITICAL HABITAT § 226.206 Critical habitat for the Southern Resident killer whale (Orcinus orca). Critical habitat is designated for the Southern Resident killer whale as described in this section. The...

  8. File list: DNS.Bld.20.AllAg.Natural_Killer_Cells [Chip-atlas[Archive

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  1. File list: ALL.Bld.20.AllAg.Natural_Killer_Cells [Chip-atlas[Archive

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  10. A Danish killer amendment-when judicial review was banned from the 1849 Constitution

    DEFF Research Database (Denmark)

    Pedersen, M. N.

    2014-01-01

    In real political life "killer amendments" are very rare. William H. Riker was the first political scientist to draw systematic attention to this special "heresthetic" phenomenon, but he was himself only able to identify a handful of successful "killer amendments". Subsequent systematic empirical...... Constitution. The motion was defeated by means of what looks like a nicely orchestrated "killer amendment"....

  11. Adherence and health care costs

    Directory of Open Access Journals (Sweden)

    Iuga AO

    2014-02-01

    Full Text Available Aurel O Iuga,1,2 Maura J McGuire3,4 1Johns Hopkins Bloomberg School of Public Health, 2Johns Hopkins University, 3Johns Hopkins Community Physicians, 4Johns Hopkins University School of Medicine, Baltimore, MD, USA Abstract: Medication nonadherence is an important public health consideration, affecting health outcomes and overall health care costs. This review considers the most recent developments in adherence research with a focus on the impact of medication adherence on health care costs in the US health system. We describe the magnitude of the nonadherence problem and related costs, with an extensive discussion of the mechanisms underlying the impact of nonadherence on costs. Specifically, we summarize the impact of nonadherence on health care costs in several chronic diseases, such as diabetes and asthma. A brief analysis of existing research study designs, along with suggestions for future research focus, is provided. Finally, given the ongoing changes in the US health care system, we also address some of the most relevant and current trends in health care, including pharmacist-led medication therapy management and electronic (e-prescribing. Keywords: patient, medication, adherence, compliance, nonadherence, noncompliance, cost

  12. Cryopreservation of adherent neuronal networks.

    Science.gov (United States)

    Ma, Wu; O'Shaughnessy, Thomas; Chang, Eddie

    2006-07-31

    Neuronal networks have been widely used for neurophysiology, drug discovery and toxicity testing. An essential prerequisite for future widespread application of neuronal networks is the development of efficient cryopreservation protocols to facilitate their storage and transportation. Here is the first report on cryopreservation of mammalian adherent neuronal networks. Dissociated spinal cord cells were attached to a poly-d-lysine/laminin surface and allowed to form neuronal networks. Adherent neuronal networks were embedded in a thin film of collagen gel and loaded with trehalose prior to transfer to a freezing medium containing DMSO, FBS and culture medium. This was followed by a slow rate of cooling to -80 degrees C for 24 h and then storage for up to 2 months in liquid nitrogen at -196 degrees C. The three components: DMSO, collagen gel entrapment and trehalose loading combined provided the highest post-thaw viability, relative to individual or two component protocols. The post-thaw cells with this protocol demonstrated similar neuronal and astrocytic markers and morphological structure as those detected in unfrozen cells. Fluorescent dye FM1-43 staining revealed active recycling of synaptic vesicles upon depolarizing stimulation in the post-thaw neuronal networks. These results suggest that a combination of DMSO, collagen gel entrapment and trehalose loading can significantly improve conventional slow-cooling methods in cryopreservation of adherent neuronal networks.

  13. Role of inositol phospholipid signaling in natural killer cell biology

    Directory of Open Access Journals (Sweden)

    Matthew eGumbleton

    2013-03-01

    Full Text Available Natural Killer (NK cells are important in the host defense against malignancy and infection. At a cellular level NK cells are activated when signals from activating receptors exceed signaling from inhibitory receptors. At a molecular level NK cells undergo an education process to prevent autoimmunity. Mouse models have shown important roles for inositol phospholipid signaling in lymphocytes. NK cells from mice with deletion in different members of the PI3K signaling pathway have defective development, natural killer cell repertoire expression (NKRR and effector function. Here we review the role of inositol phospholipid signaling in NK cell biology.

  14. Effects of ultraviolet irradiation on natural killer cell function in systemic lupus erythematosus

    Energy Technology Data Exchange (ETDEWEB)

    Nived, O.; Johansson, I.; Sturfelt, G. (University Hospital, Lund (Sweden). Dept. of Rheumatology)

    1992-06-01

    In vitro irradiation with long wavelength ultraviolet light (UV-A), in clinically relevant dosages, of a natural killer cell line containing cell preparations from 17 control subjects reduced natural killer cell cytotoxicity with the cell line K562 as target. The spontaneous function of natural killer cells from 12 patients with systematic lupus erythematosus (SLE) correlated inversely with the one hour erythrocyte sedimentation rate, but not with glucocorticoid doses. After UV-A exposure, natural killer cells from patients with SLE exert either increased or decreased cytotoxicity, and the direction of change is inversely correlated with the spontaneous natural killer cell function. (Author).

  15. Depressed natural killer cell activity in acute myocardial infarction

    DEFF Research Database (Denmark)

    Klarlund, K; Pedersen, B K; Theander, T G

    1987-01-01

    Natural killer (NK) cell activity against K562 target cells was measured in patients within 24 h of acute myocardial infarction (AMI) and regularly thereafter for 6 weeks. NK cell activity was suppressed on days 1, 3, and 7 (P less than 0.01), day 14 (P less than 0.05) and at 6 weeks (P = 0...

  16. Natural killer T cells in adipose tissue prevent insulin resistance

    NARCIS (Netherlands)

    Schipper, H.S.; Rakhshandehroo, M.; Graaf, van de S.F.J.; Venken, K.; Koppen, A.; Stienstra, R.; Prop, S.; Meerding, J.; Hamers, N.; Besra, G.S.; Boon, den L.; Nieuwenhuis, E.E.S.; Elewaut, D.; Prakken, B.; Kersten, A.H.; Boes, M.; Kalkhoven, E.

    2012-01-01

    Lipid overload and adipocyte dysfunction are key to the development of insulin resistance and can be induced by a high-fat diet. CD1d-restricted invariant natural killer T (iNKT) cells have been proposed as mediators between lipid overload and insulin resistance, but recent studies found decreased i

  17. Natural killer T cells in adipose tissue prevent insulin resistance.

    NARCIS (Netherlands)

    Nieuwenhuis, E.E.S.; Schipper, H.S.; Rakhshandehroo, M.; Graaf, S.F.J. van de; Venken, K.; Koppen, A.; Stienstra, R.; Prop, S.; Meerding, J.M.; Hamers, N.; Besra, G.; Boon, L; Elewaut, D.; Prakken, A.B.J.; Kersten, S.; Boes, M.L.; Kalkhoven, E.

    2012-01-01

    Lipid overload and adipocyte dysfunction are key to the development of insulin resistance and can be induced by a high-fat diet. CD1d-restricted invariant natural killer T (iNKT) cells have been proposed as mediators between lipid overload and insulin resistance, but recent studies found decreased i

  18. In Vivo Imaging of Natural Killer Cell Trafficking in Tumors

    NARCIS (Netherlands)

    Galli, Filippo; Rapisarda, Anna Serafina; Stabile, Helena; Malviya, Gaurav; Manni, Isabella; Bonanno, Elena; Piaggio, Giulia; Gismondi, Angela; Santoni, Angela; Signore, Alberto

    2015-01-01

    Natural killer cells (NKs) are important effectors of the innate immune system, with marked antitumor activity. Imaging NK trafficking in vivo may be relevant to following up the efficacy of new therapeutic approaches aiming at increasing tumor-infiltrating NKs (TINKs). The specific aims of present

  19. Life history evolution: what does a menopausal killer whale do?

    Science.gov (United States)

    Whitehead, Hal

    2015-03-16

    Menopause evolved in humans and whales, presumably because older females can help their kin. But how do they help? New research shows that post-menopausal female killer whales lead foraging groups. This leadership is most significant when food is scarce.

  20. Modulation of natural killer cytotoxicity by muramyl dipeptide and trehalose dimycolate incorporated in squalane droplets.

    Science.gov (United States)

    Masihi, K N; Lange, W; Rohde-Schulz, B

    1987-01-01

    The effect on natural killer (NK) cytotoxicity of splenic cells from BALB/c mice pretreated i.v. with squalane-in-water preparations of muramyl dipeptide (MDP), trehalose dimycolate (TDM), or the combination of MDP-plus-TDM was investigated. MDP or TDM augmented the NK cytotoxicity which peaked 48 h after the pretreatment whereas the combination of MDP and TDM induced an inhibition of the NK activity. Infection with influenza virus, a potent stimulator of NK cells, after the pretreatment with biological response modifiers resulted in a markedly enhanced NK activity on day 2 in MDP and control groups. Mice pretreated with TDM or the combination of MDP and TDM showed only moderate NK activity which peaked on day 3 after influenza infection. The NK activity was susceptible to asialo GM1 and complement treatment. The cytotoxicity of MDP-plus-TDM cells could be significantly enhanced after treatment with anti-macrophage monoclonal antibody and complement. NK activity induced by MDP or TDM was reduced by mixing MDP-plus-TDM cells. Addition of adherent cell-depleted MDP-plus-TDM suspension to MDP or TDM cells had a NK restorative effect. Splenic cells from mice pretreated 2 days earlier with MDP or TDM, but not MDP-plus-TDM, generated enhanced levels of luminol-dependent chemiluminescence.

  1. Rapid and Permanent Neuronal Inactivation In Vivo via Subcellular Generation of Reactive Oxygen with the Use of KillerRed

    Directory of Open Access Journals (Sweden)

    Daniel C. Williams

    2013-10-01

    Full Text Available Inactivation of selected neurons in vivo can define their contribution to specific developmental outcomes, circuit functions, and behaviors. Here, we show that the optogenetic tool KillerRed selectively, rapidly, and permanently inactivates different classes of neurons in C. elegans in response to a single light stimulus, through the generation of reactive oxygen species (ROS. Ablation scales from individual neurons in single animals to multiple neurons in populations and can be applied to freely behaving animals. Using spatially restricted illumination, we demonstrate that localized KillerRed activation in either the cell body or the axon triggers neuronal degeneration and death of the targeted cell. Finally, targeting KillerRed to mitochondria results in organelle fragmentation without killing the cell, in contrast to the cell death observed when KillerRed is targeted to the plasma membrane. We expect this genetic tool to have wide-ranging applications in studies of circuit function and subcellular responses to ROS.

  2. Intent-to-adhere and adherence to malaria prevention recommendations in two travel clinics.

    Science.gov (United States)

    Goldstein, Irit; Grefat, Rami; Ephros, Moshe; Rishpon, Shmuel

    2015-01-01

    Malaria infects 30,000 travelers annually worldwide. At greatest risk are those who travel for long duration. Prevention of malaria includes chemoprophylaxis. This prospective study on 121 travelers who visited two travel clinics shows that adherence to prophylactic treatment was low, especially in long duration trips, and that adherence rate could be predicted by the much more available intent-to-adhere rate.

  3. Measurement of oxide adherence to PFM alloys.

    Science.gov (United States)

    Mackert, J R; Parry, E E; Hashinger, D T; Fairhurst, C W

    1984-11-01

    A method has been reported for evaluating adherence of an oxide to its substrate metal to a maximum value of about 40 MPa. Oxidized alloy plates were cemented between two aluminum cylinders with a high-strength cyanoacrylate cement and loaded in tension until failure occurred either at the oxide/metal interface, within the oxide layer, or in the cement itself. Significant differences were found among the oxide adherence values obtained from different PFM alloys. The oxides formed on five of the alloys exhibited adherence strengths in excess of the published value for cohesive strength of dental opaque porcelain, indicating that they possess sufficient adherence to act as the transition zone between the porcelain and the alloy. In addition, a correspondence was found between the quality of porcelain bond for a given alloy and its oxide adherence strength. These results remove the principal objection to the oxide-layer theory of porcelain bonding in dental alloy systems and emphasize the importance of oxide adherence in the establishment of a bond. It is therefore suggested that future work devoted to porcelain-metal bonding should seek to elucidate the mechanism of oxide adherence to PFM alloys and explore the development of new alloys which form adherent oxides.

  4. Asthma and Adherence to Inhaled Corticosteroids

    DEFF Research Database (Denmark)

    Bårnes, Camilla Boslev; Ulrik, Charlotte Suppli

    2015-01-01

    Inhaled corticosteroids (ICS) are the cornerstone of maintenance asthma therapy. However, in spite of this, adherence to ICS remains low. The aim of this systematic literature review was to provide an overview of the current knowledge of adherence to ICS, effects of poor adherence, and means...... was found to be between 22 and 63%, with improvement up to and after an exacerbation. Poor adherence was associated with youth, being African-American, having mild asthma, ... prescribed fixed-combination therapy (ICS and long-acting β2 agonists). Good adherence was associated with higher FEV1, a lower percentage of eosinophils in sputum, reduction in hospitalizations, less use of oral corticosteroids, and lower mortality rate. Overall, 24% of exacerbations and 60% of asthma...

  5. Natural killer cell activity during premedication, anaesthesia and surgery

    DEFF Research Database (Denmark)

    Tønnesen, E; Mickley, H; Grunnet, N

    1983-01-01

    Natural killer (NK) cell activity of peripheral blood mononuclear cells was measured against K-562 target cells in a 51Cr release assay in eight patients undergoing total hip replacement surgery. Eight consecutive blood samples were taken from each patient. A significant increase of NK cell...... activity was observed after premedication with diazepam per os. The activity increased further during a combined anaesthesia (thiopentone + N2O + O2 + buprenorphene + pancuronium) and remained increased during surgery. Postoperatively, NK cell activity fell and remained depressed for a period of at least 5...... days. The findings of this study indicate that premedication, anaesthesia and surgery cause a rapid and transient increase in NK cell activity, followed by a decline in activity postoperatively. The transient increase in activity may be explained by mobilization of natural killer cells from extravasal...

  6. Uterine Natural Killer Cells: Their Choices, Their Missions

    Institute of Scientific and Technical Information of China (English)

    Jianhong Zhang; B Anne Croy; Zhigang Tian

    2005-01-01

    Uterine natural killer (uNK) cells, sharing many characters with peripheral blood natural killer (pNK) cells, are a major uterine lymphocyte population at early gestational stages during normal pregnancy in placental mammals.The functions of uNK cells include cytokine production and cytotoxcity that are regulated by signals through activating and inhibitory receptors. UNK cells differ from pNK cells however and contribute to the structural changes that accompany the differentiation of the maternal-fetal interface. Immunological mechanisms must provide a balanced environment for uNK cell proliferation, differentiation and activation through intricate signaling pathways. An improved knowledge of mechanisms regulating uNK cells development and the cytokine network at the maternal-fetal interface of mice and humans might be useful to harness the power of these cells for maintenance of pregnancy. Cellular & Molecular Immunology. 2005;2(2):123-129.

  7. Uterine Natural Killer Cells: Their Choices, Their Missions

    Institute of Scientific and Technical Information of China (English)

    JianhongZhang; BAnneCroy; ZhigangTian

    2005-01-01

    Uterine natural killer (uNK) cells, sharing many characters with peripheral blood natural killer (pNK) cells, are a major uterine lymphocyte population at early gestational stages during normal pregnancy in placental mammals. The functions of uNK cells include cytokine production and cytotoxcity that are regulated by signals through activating and inhibitory receptors. UNK cells differ from pNK cells however and contribute to the structural changes that accompany the differentiation of the maternal-fetal interface. Immunological mechanisms must provide a balanced environment for uNK cell proliferation, differentiation and activation through intricate signaling pathways. An improved knowledge of mechanisms regulating uNK cells development and the cytokine network at the maternal-fetal interface of mice and humans might be useful to harness the power of these cells for maintenance of pregnancy. Cellular & Molecular Immunology. 2005;2(2):123-129.

  8. Phylogenomics of the killer whale indicates ecotype divergence in sympatry.

    Science.gov (United States)

    Moura, A E; Kenny, J G; Chaudhuri, R R; Hughes, M A; Reisinger, R R; de Bruyn, P J N; Dahlheim, M E; Hall, N; Hoelzel, A R

    2015-01-01

    For many highly mobile species, the marine environment presents few obvious barriers to gene flow. Even so, there is considerable diversity within and among species, referred to by some as the 'marine speciation paradox'. The recent and diverse radiation of delphinid cetaceans (dolphins) represents a good example of this. Delphinids are capable of extensive dispersion and yet many show fine-scale genetic differentiation among populations. Proposed mechanisms include the division and isolation of populations based on habitat dependence and resource specializations, and habitat release or changing dispersal corridors during glacial cycles. Here we use a phylogenomic approach to investigate the origin of differentiated sympatric populations of killer whales (Orcinus orca). Killer whales show strong specialization on prey choice in populations of stable matrifocal social groups (ecotypes), associated with genetic and phenotypic differentiation. Our data suggest evolution in sympatry among populations of resource specialists.

  9. [A serial killer as exemplified by T. R. Bundy].

    Science.gov (United States)

    Gałeska-Sliwka, Anita

    2008-01-01

    The question of serial homicides and their perpetrators poses a considerable problem of both a definitional and practical nature. T R. Bundy is the first perpetrator who was officially termed a "serial killer". Since that time, this concept has been commonly used and sometimes even overused, e.g. in reference to mass murderers. However, the definitions established for Bundy's case have been preserved and continue to be used in practice.

  10. Public opinion and the politics of the killer robots debate

    OpenAIRE

    Michael C. Horowitz

    2016-01-01

    The possibility that today’s drones could become tomorrow’s killer robots has attracted the attention of people around the world. Scientists and business leaders, from Stephen Hawking to Elon Musk, recently signed a letter urging the world to ban autonomous weapons. Part of the argument against these systems is that they violate the public conscience provision of the Martens Clause due to public opposition, making them illegal under international law. What, however, does the US public think o...

  11. Human Immunodeficiency Syndromes Affecting Human Natural Killer Cell Cytolytic Activity

    OpenAIRE

    Ham, Hyoungjun; Billadeau, Daniel D.

    2014-01-01

    Natural killer (NK) cells are lymphocytes of the innate immune system that secrete cytokines upon activation and mediate the killing of tumor cells and virus-infected cells, especially those that escape the adaptive T cell response caused by the down regulation of MHC-I. The induction of cytotoxicity requires that NK cells contact target cells through adhesion receptors, and initiate activation signaling leading to increased adhesion and accumulation of F-actin at the NK cell cytotoxic synaps...

  12. Which serial killers commit suicide? An exploratory study.

    Science.gov (United States)

    Lester, David; White, John

    2012-11-30

    In a sample of 483 serial killers, 6.2% were documented to have committed suicide. Those who committed suicide were found to come from more dysfunctional homes characterized by more psychiatric disturbance in the parents. The sexual acts involved in the murders by the suicides seemed to be more deviant in some aspects, such as committing more bizarre sexual acts or more often taping the murder.

  13. Transient improvement of urticaria induces poor adherence as assessed by Morisky Medication Adherence Scale-8.

    Science.gov (United States)

    Kaneko, Sakae; Masuda, Koji; Hiragun, Takaaki; Inomata, Naoko; Furue, Masutaka; Onozuka, Daisuke; Takeuchi, Satoshi; Murota, Hiroyuki; Sugaya, Makoto; Saeki, Hidehisa; Shintani, Yoichi; Tsunemi, Yuichiro; Abe, Shinya; Kobayashi, Miwa; Kitami, Yuki; Tanioka, Miki; Imafuku, Shinichi; Abe, Masatoshi; Hagihara, Akihito; Morisky, Donald E; Katoh, Norito

    2015-11-01

    Poor adherence to medication is a major public health challenge. Here, we aimed to determine the adherence to oral and topical medications and to analyze underlying associated factors using the translated Japanese version of Morisky Medication Adherence Scale-8 regarding urticaria treatment. Web-based questionnaires were performed for 3096 registered dermatological patients, along with a subanalysis of 751 registered urticaria patients in this study. The adherence to oral medication was significantly associated with the frequency of hospital visits. Variables that affected the adherence to topical medication included age and experience of drug effectiveness. The rate of responses that "It felt like the symptoms had improved" varied significantly among the dermatological diseases treated with oral medications. Dermatologists should be aware that adherence to the treatment of urticaria is quite low. Regular visits and active education for patients with urticaria are mandatory in order to achieve a good therapeutic outcome by increasing the adherence.

  14. Toxicity of a plant based mosquito repellent/killer.

    Science.gov (United States)

    Singh, Bhoopendra; Singh, Prakash Raj; Mohanty, Manoj Kumar

    2012-12-01

    The mission to make humans less attractive to mosquitoes has fuelled decades of scientific research on mosquito behaviour and control. The search for the perfect topical insect repellent/killer continues. This analysis was conducted to review and explore the scientific information on toxicity produced by the ingredients/contents of a herbal product. In this process of systemic review the following methodology was applied. By doing a MEDLINE search with key words of selected plants, plant based insect repellents/killers pertinent articles published in journals and authentic books were reviewed. The World Wide Web and the Extension Toxicity Network database (IPCS-ITOX) were also searched for toxicology data and other pertinent information. Repellents do not all share a single mode of action and surprisingly little is known about how repellents act on their target insects. Moreover, different mosquito species may react differently to the same repellent. After analysis of available data and information on the ingredient, of the product in relation to medicinal uses, acute and chronic toxicity of the selected medicinal plants, it can be concluded that the ingredients included in the herbal product can be used as active agents against mosquitoes. If the product which contains the powder of the above said plants is applied with care and safety, it is suitable fo use as a mosquito repellent/killer.

  15. Experimental evidence for action imitation in killer whales (Orcinus orca).

    Science.gov (United States)

    Abramson, José Z; Hernández-Lloreda, Victoria; Call, Josep; Colmenares, Fernando

    2013-01-01

    Comparative experimental studies of imitative learning have focused mainly on primates and birds. However, cetaceans are promising candidates to display imitative learning as they have evolved in socioecological settings that have selected for large brains, complex sociality, and coordinated predatory tactics. Here we tested imitative learning in killer whales, Orcinus orca. We used a 'do-as-other-does' paradigm in which 3 subjects witnessed a conspecific demonstrator's performance that included 15 familiar and 4 novel behaviours. The three subjects (1) learned the copy command signal 'Do that' very quickly, that is, 20 trials on average; (2) copied 100 % of the demonstrator's familiar and novel actions; (3) achieved full matches in the first attempt for 8-13 familiar behaviours (out of 15) and for the 2 novel behaviours (out of 2) in one subject; and (4) took no longer than 8 trials to accurately copy any familiar behaviour, and no longer than 16 trials to copy any novel behaviour. This study provides experimental evidence for body imitation, including production imitation, in killer whales that is comparable to that observed in dolphins tested under similar conditions. These findings suggest that imitative learning may underpin some of the group-specific traditions reported in killer whales in the field.

  16. Destructive hostility: the Jeffrey Dahmer case. A psychiatric and forensic study of a serial killer.

    Science.gov (United States)

    Jentzen, J; Palermo, G; Johnson, L T; Ho, K C; Stormo, K A; Teggatz, J

    1994-12-01

    We were involved as forensic experts in the case of the serial killer Jeffrey Dahmer. We discuss the scene and victim autopsy findings, with a brief consideration of the basic emotion of hostility. These findings support the thesis that at the basis of this serial killer's behavior were primary unconscious feelings of hate that he had channeled into a sadistic programmed destruction of 17 young men. The interview of the serial killer, the photographic scene documentation, and the autopsy findings stress the ambivalent homosexuality of the killer, his sexual sadism, his obsessive fetishism, and his possible cannibalism and necrophilia.

  17. Improving adherence with inhaler therapy in COPD

    Directory of Open Access Journals (Sweden)

    Suzanne C Lareau

    2010-11-01

    Full Text Available Suzanne C Lareau1, Barbara P Yawn21College of Nursing, University of Colorado Denver, Aurora, Colorado; 2Department of Research, Olmsted Medical Center, Rochester, Minnesota, USAAbstract: Chronic obstructive pulmonary disease (COPD is a major public health problem, associated with considerable morbidity and health care costs. The global burden of COPD morbidity is predicted to rise substantially in the coming decade, but could be moderated by better use of existing management strategies. Smoking cessation, medication therapy, and pulmonary rehabilitation have all been shown to diminish morbidity and improve patient outcomes. But each of these strategies requires adherence. Adherence is crucial for optimizing clinical outcomes in COPD, with nonadherence resulting in a significant health and economic burden. Suboptimal medication adherence is common among COPD patients, due to a number of factors that involve the medication, the delivery device, the patient, and the health professionals caring for the patient. Lack of medication adherence needs to be identified and addressed by using simplified treatment regimens, increasing patient knowledge about self-management, and enhancing provider skills in patient education, communication, and adherence counseling. This article reports some of the challenges of medication nonadherence faced by the clinician in the management of COPD, and suggests ways to evaluate and improve adherence effectively in primary care.Keywords: chronic obstructive pulmonary disease, adherence, clinician

  18. Adherence to Antihypertensive Medications in Iranian Patients

    Directory of Open Access Journals (Sweden)

    Azin Behnood-Rod

    2016-01-01

    Full Text Available Introduction. Appropriate adherence to medication is still a challenging issue for hypertensive patients. We determined adherence to antihypertensive(s and its associated factors among 280 Iranian patients. Methods. They were recruited consecutively from private and university health centers and pharmacies in four cities. The validated Persian version of the 8-item Morisky Medication Adherence Scale (MMAS-8 was administered to measure adherence. Results. Mean (±SD overall MMAS-8 score was 5.75 (±1.88. About half of the sample (139 cases, 49.6% showed low adherence (MMAS-8 score < 6. There was a negative linear association between the MMAS-8 score and systolic BP (r=-0.231, P<0.001 as well as diastolic BP (r=-0.280, P<0.001. In linear regression model, overweight/obesity (B=-0.52, P=0.02, previous history of admission to emergency services due to hypertensive crisis (B=-0.79, P=0.001, and getting medication directly from drugstore without refill prescription in hand (B=-0.51, P=0.04 were factors recognized to have statistically significant association with the MMAS-8 score. Conclusion. Antihypertensive adherence was unsatisfactory. We suggest that health care providers pay special attention and make use of the aforementioned findings in their routine visits of hypertensive patients to recognize those who are vulnerable to poor adherence.

  19. Patient Adherence to Biologic Agents in Psoriasis

    DEFF Research Database (Denmark)

    Hsu, Der Yi; Gniadecki, Robert

    2016-01-01

    BACKGROUND: Low adherence to therapies in psoriasis decreases treatment outcomes and increases the total health care costs. In spite of the wide use of biologic agents, patients' adherence to these drugs has not been extensively investigated. OBJECTIVE: The aim of this study is to measure adherence...... adverse effects, and positive attitudes to the treatment. CONCLUSION: Adherence to biologic therapies is very high in patients with psoriasis, which is consistent with a positive attitude to the treatment....... to the biologic drugs in a population of patients treated for psoriasis vulgaris using the medication possession ratio (MPR) index and to survey patients' attitudes to the treatment. METHODS: This is a single-center study on 247 patients with psoriasis vulgaris treated with adalimumab (n = 113), etanercept (n...

  20. Adherence to anti-depressant medication

    DEFF Research Database (Denmark)

    Buus, Niels

    2014-01-01

    The study of medicine taking is controversial as it often reveals a discrepancy between healthcare professionals' advice and patients' actual behaviour. Qualitative researchers have examined depressed people's adherence to prescriptions of antidepressants by exploring the meaning they impute to t...

  1. Mobile Applications to Improve Medication Adherence.

    Science.gov (United States)

    Haase, Jamie; Farris, Karen B; Dorsch, Michael P

    2017-02-01

    Background and Introduction: Mobile applications are useful tools to improve medication adherence. As developers continue to improve the features of existing mobile applications, pharmacists should be aware of the current features that are available to patients. There are limited studies available that discuss which applications have the most desirable features. The aim of this study was to compare available mobile applications and identify ideal application features used to improve medication adherence.

  2. Microbicide clinical trial adherence: insights for introduction

    Directory of Open Access Journals (Sweden)

    Cynthia Woodsong

    2013-04-01

    Full Text Available After two decades of microbicide clinical trials it remains uncertain if vaginally- delivered products will be clearly shown to reduce the risk of HIV infection in women and girls. Furthermore, a microbicide product with demonstrated clinical efficacy must be used correctly and consistently if it is to prevent infection. Information on adherence that can be gleaned from microbicide trials is relevant for future microbicide safety and efficacy trials, pre-licensure implementation trials, Phase IV post-marketing research, and microbicide introduction and delivery. Drawing primarily from data and experience that has emerged from the large-scale microbicide efficacy trials completed to-date, the paper identifies six broad areas of adherence lessons learned: (1 Adherence measurement in clinical trials, (2 Comprehension of use instructions/Instructions for use, (3 Unknown efficacy and its effect on adherence/Messages regarding effectiveness, (4 Partner influence on use, (5 Retention and continuation and (6 Generalizability of trial participants' adherence behavior. Each is discussed, with examples provided from microbicide trials. For each of these adherence topics, recommendations are provided for using trial findings to prepare for future microbicide safety and efficacy trials, Phase IV post-marketing research, and microbicide introduction and delivery programs.

  3. Unraveling the genetic expression of the highly variable immune receptors of a killer

    NARCIS (Netherlands)

    Vendelbosch, S.

    2015-01-01

    The Killer Immunoglobulin-like Receptors (KIRs) are a family of highly variable receptors which regulate cytotoxicity of Natural Killer (NK) cells and a subset of T-cells. The KIR genes, clustered on the genome in the KIR locus, are distributed unequally across the population due to variation in gen

  4. Associations of Killer Cell Immunoglobulin-Like Receptor Genes with Rheumatoid Arthritis

    Directory of Open Access Journals (Sweden)

    S. Ramírez-De los Santos

    2012-01-01

    Full Text Available Objective: Rheumatoid Arthritis (RA is an autoimmune and chronic inflammatory disease of unknown etiology. Killer cell immunoglobulin-like receptors are expressed on the surface of natural killer cells and CD28null T-cells, both present in synovial membrane of RA. Therefore we evaluated the associations of KIR genes with RA.

  5. Suppression of a Natural Killer Cell Response by Simian Immunodeficiency Virus Peptides

    NARCIS (Netherlands)

    Schafer, Jamie L; Ries, Moritz; Guha, Natasha; Connole, Michelle; Colantonio, Arnaud D; Wiertz, EJ; Wilson, Nancy A; Kaur, Amitinder; Evans, David T

    2015-01-01

    Natural killer (NK) cell responses in primates are regulated in part through interactions between two highly polymorphic molecules, the killer-cell immunoglobulin-like receptors (KIRs) on NK cells and their major histocompatibility complex (MHC) class I ligands on target cells. We previously reporte

  6. 76 FR 20870 - Protective Regulations for Killer Whales in the Northwest Region Under the Endangered Species Act...

    Science.gov (United States)

    2011-04-14

    ... Killer Whales in the Northwest Region Under the Endangered Species Act and Marine Mammal Protection Act... from approaching killer whales within 200 yards (182.9 m) and from parking in the path of whales when... of this final rule is to protect killer whales from interference and noise associated with...

  7. File list: NoD.Bld.20.AllAg.Natural_Killer_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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  15. T-Cell Gene Therapy to Eradicate Disseminated Breast Cancers

    Science.gov (United States)

    2011-05-01

    Barr virus+ Hodgkin’s disease. J Exp Med. 2004;200(12):1623-1633. 6. Grimm EA, Robb RJ, Roth JA, et al. Lymphokine-activated killer cell phenomenon...Roger Williams Medical Center on June 13, 2011. bloodjournal.hematologylibrary.orgFrom 29 99. Sanderson K, Scotland R, Lee P, et al. Autoimmunity

  16. SwissProt search result: AK064052 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK064052 001-125-E11 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 3e-12 ...

  17. SwissProt search result: AK060260 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK060260 001-004-H01 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 9e-11 ...

  18. SwissProt search result: AK111766 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK111766 J023063C15 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 1e-14 ...

  19. SwissProt search result: AK058504 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK058504 001-016-F09 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 2e-13 ...

  20. SwissProt search result: AK061767 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK061767 001-039-B11 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 3e-11 ...

  1. SwissProt search result: AK111267 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK111267 002-180-F08 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 9e-11 ...

  2. SwissProt search result: AK103598 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK103598 J033133E19 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 2e-11 ...

  3. SwissProt search result: AK060211 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK060211 001-002-B07 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 8e-11 ...

  4. SwissProt search result: AK111546 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK111546 J013047P09 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 9e-11 ...

  5. SwissProt search result: AK109928 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK109928 002-151-H03 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 8e-12 ...

  6. SwissProt search result: AK119892 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK119892 002-180-A10 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 6e-12 ...

  7. SwissProt search result: AK101312 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK101312 J033033P12 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 5e-12 ...

  8. SwissProt search result: AK120857 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK120857 J023024D23 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 1e-13 ...

  9. SwissProt search result: AK103073 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK103073 J033118C07 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 2e-11 ...

  10. SwissProt search result: AK103026 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK103026 J033117B13 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 2e-12 ...

  11. SwissProt search result: AK121984 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK121984 J033108O10 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 3e-13 ...

  12. SwissProt search result: AK102267 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK102267 J033088N21 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 5e-13 ...

  13. SwissProt search result: AK111541 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK111541 J013038H19 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 3e-11 ...

  14. SwissProt search result: AK108602 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK108602 002-146-E12 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 2e-12 ...

  15. SwissProt search result: AK073793 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK073793 J033070P05 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 2e-12 ...

  16. SwissProt search result: AK111851 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK111851 J023150C23 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 8e-12 ...

  17. SwissProt search result: AK119889 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK119889 002-180-A02 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 9e-16 ...

  18. SwissProt search result: AK119448 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK119448 001-133-D05 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 1e-10 ...

  19. SwissProt search result: AK068802 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK068802 J013159J12 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 4e-12 ...

  20. SwissProt search result: AK068947 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK068947 J023001A13 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 5e-11 ...

  1. SwissProt search result: AK069368 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK069368 J023014P05 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 4e-12 ...

  2. SwissProt search result: AK064359 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK064359 002-108-B08 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 1e-12 ...

  3. SwissProt search result: AK069324 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK069324 J023012G17 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 4e-14 ...

  4. SwissProt search result: AK112001 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK112001 001-035-B08 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 1e-14 ...

  5. SwissProt search result: AK121689 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK121689 J033071C20 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 1e-12 ...

  6. SwissProt search result: AK103267 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK103267 J033124G23 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 1e-10 ...

  7. SwissProt search result: AK120146 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK120146 J013028L17 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 9e-16 ...

  8. SwissProt search result: AK059245 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK059245 001-024-G03 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 1e-12 ...

  9. SwissProt search result: AK103166 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK103166 J033121E13 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 3e-13 ...

  10. SwissProt search result: AK103917 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK103917 001-013-A06 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 9e-12 ...

  11. SwissProt search result: AK111680 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK111680 J013168E03 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 6e-13 ...

  12. SwissProt search result: AK100096 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK100096 J023004B22 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 9e-16 ...

  13. SwissProt search result: AK105892 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK105892 001-204-E09 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 3e-11 ...

  14. SwissProt search result: AK071975 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK071975 J013087L17 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 7e-11 ...

  15. SwissProt search result: AK103247 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK103247 J033123K23 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 8e-14 ...

  16. SwissProt search result: AK066397 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK066397 J013061M19 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 6e-12 ...

  17. SwissProt search result: AK119579 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK119579 002-117-B11 (Q9JJ78) T-lymphokine-activated killer cell-originated protein... kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 2e-15 ...

  18. SwissProt search result: AK067771 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK067771 J013117A13 (Q9JJ78) T-lymphokine-activated killer cell-originated protein ...kinase (EC 2.7.1.37) (T-LAK cell-originated protein kinase) (PDZ-binding kinase) TOPK_MOUSE 7e-17 ...

  19. Enhancement and abrogation : modifications of host immune status influence IL-2 and LAK cell immunotherapy

    NARCIS (Netherlands)

    E.P. Steller (Erick)

    1988-01-01

    textabstractThis thesis will discuss the role immune cells and the host immune system can play in enhancement and abrogation of this novel immunotherapy with interleukin 2 and lymphokine-activated killer cells. Chapter 3 and 4 will discuss the scoring methods in this intraperitoneal cancer and immun

  20. Production of functional killer protein in batch cultures upon a shift from aerobic to anaerobic conditions

    Directory of Open Access Journals (Sweden)

    Gildo Almeida da Silva

    2011-06-01

    Full Text Available The aim of this work was to study the production of functional protein in yeast culture. The cells of Saccharomyces cerevisiae Embrapa 1B (K+R+ killed a strain of Saccharomyces cerevisiae Embrapa 26B (K-R-in grape must and YEPD media. The lethal effect of toxin-containing supernatant and the effect of aeration upon functional killer production and the correlation between the products of anaerobic metabolism and the functional toxin formation were evaluated. The results showed that at low sugar concentration, the toxin of the killer strain of Sacch. cerevisiae was only produced under anaerobic conditions . The system of killer protein production showed to be regulated by Pasteur and Crabtree effects. As soon as the ethanol was formed, the functional killer toxin was produced. The synthesis of the active killer toxin seemed to be somewhat associated with the switch to fermentation process and with concomitant alcohol dehydrogenase (ADH activity.

  1. A novel cell subset:Interferon-producing killer dendritic cells

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Recent reports introduce a novel cell subset of DCs with antigenic phenotypes shared by both NK cells and B cells, but without surface markers of pDCs and T cells, appearing to be a chimera of NK cells and DCs, namely interferon-producing killer dendritic cells(IKDCs).IKDCs not only secret type I and type II interferons to recognize and kill tumor cells effectively, but also express MHC-II molecules to present antigens.Thus, IKDCs are considered as important immunosurveilance cells for tumors, providing a link between innate and adaptive immunity.

  2. The Need for Killer Examples for Object-Oriented Frameworks

    DEFF Research Database (Denmark)

    Caspersen, Michael Edelgaard; Christensen, Henrik Bærbak

    2003-01-01

    In this paper, we argue in favor of introducing object-oriented frameworks as an important topic in our software engineering teaching. Frameworks provide a basis for students to build interesting and impressive programs even with small programming effort at the introductory level. Frameworks...... of publications and literature about teaching frameworks, it seems that few has realized the potential---it is an under-utilized technology. We therefore suggest that killer examples are highly needed and present some experiences with two frameworks that we have found useful in our teaching....

  3. Google+ is Google's Facebook killer doomed to fail?

    CERN Document Server

    Dino, G

    2012-01-01

    Do you have a Facebook profile? How about a Google+ page? Which do you prefer: Facebook or Google+? You may have both, but not use one as often as the other. You may have just one while waiting for the right time to join the other. The question is: When is the right time? Are you waiting to see which one is the better product? This issue has been the talk of the cybersphere since Google+ was released - will it be the Facebook killer that a number of other social media sites in the past have failed to become?

  4. Natural killer cell cytotoxicity assay with time-resolved fluorimetry

    Institute of Scientific and Technical Information of China (English)

    李建中; 章竹君; 金伯泉; 田方

    1996-01-01

    A new time-resolved fluorimetric method for the measurement of natural killer (NK) cell cytotoxicity has been developed by labelling the target cell K562 with a new synthesized fluorescence marker KLUK. The method has advantages of higher sensitivity, time-saving, good reproducibility and has no radioactivity problems. A satisfactory result is obtained by comparing it with 51Cr release method. It demonstrates that the new marker provides an alternative to currently used radioactive markers for the assessment of in vitro cellular cytotoxicity.

  5. Three faces of mortalin: a housekeeper, guardian and killer.

    Science.gov (United States)

    Kaul, Sunil C; Deocaris, Custer C; Wadhwa, Renu

    2007-04-01

    Mortalin was first cloned as a mortality factor that existed in the cytoplasmic fractions of normal, but not in immortal, mouse fibroblasts. A decade of efforts have expanded its persona from a house keeper protein involved in mitochondrial import, energy generation and chaperoning of misfolded proteins, to a guardian of stress that has multiple binding partners and to a killer protein that contributes to carcinogenesis on one hand and to old age disorders on the other. Being proved to be an attractive target for cancer therapy, it also warrants attention from the perspectives of management of old age diseases and healthy aging.

  6. Adherence in patients with chronic treatment: data of “adherence day 2013”

    Directory of Open Access Journals (Sweden)

    Olatz Ibarra Barrueta

    2015-01-01

    Full Text Available Objetive: The primary objective of this study was to evaluate the adherence level in chronic conditions patients during “The Adherence Day” celebrated on November 15, 2013. Methods: We performed a transversal, observational and multicenter study at 43 Spanish hospitals, in order to estimate adherence in chronic treatments. We used the validated questionnaires Haynes- Sackett and Morisky- Green to measure medication adherence; but also a visual analogue scale and questions related with treatment complexity and selective adherence were applied. We performed a descriptive analysis and the closeness of agreement between questionnaires results. Results: A total of 723 surveys were collected especially among outpatients. 43% of the participants were women, with a median age of 51 and taking 3 drugs per day. 10.8% of the patients reported to have difficulty taking their pills according to Haynes- Sackett test. However, depending on Morisky- Green questionnaire, 56.4% of the participants were totally compliant; but considering only the question about forgetfulness, more were adherents (77%. 71% of the patients considered their compliance level as good (more than 8 according to visual analogue scale. And 11% presented a selective adherence, no taking equally well all the medications. The closeness of agreement between questionnaires and Morisky- Green test, as gold standard, was poor for Haynes- Sackett and weak for visual analogue scale. Conclusions: In our study only 56% of the patients with chronic treatment had a perfect adherence

  7. Assessing adherence factors in patients under topical treatment: development of the Topical Therapy Adherence Questionnaire (TTAQ).

    Science.gov (United States)

    Zschocke, Ina; Mrowietz, Ulrich; Lotzin, Annett; Karakasili, Eleni; Reich, Kristian

    2014-04-01

    Medication adherence rates strongly depend on favorable disease outcomes. It is known that medication adherence rates are lower for topical treatment than for systemic treatment. However, to date no validated instrument for the assessment of adherence factors in topical treatment is available. The aim of this study was to develop a new questionnaire to assess adherence risk factors in topical treatment. The development of the Topical Therapy Adherence Questionnaire (TTAQ) and Patient Preference Questionnaire (PPQ) was based on a systematic literature review, and qualitative patient focus interviews and expert focus groups' input. The psychometric properties and comprehensibility of the TTAQ and PPQ were assessed in a feasibility study with 59 psoriasis patients. Our first preliminary results indicate that the TTAQ and PPQ are psychometrically sound and reliable measures for the assessment of factors influencing topical treatment adherence. The questionnaires are currently being further developed and various parameters (e.g., time point of assessment) are currently being tested in an exploratory pilot study with ca. 2,000 psoriasis patients receiving topical treatment in a European clinical trial. The use of the final versions of TTAQ and PPQ in clinical practice may facilitate the early identification of specific non-adherence factors in patients under topical treatment, which could enable designing and applying adherence-enhancing interventions according to the patient's individual needs.

  8. Road Traffic Accidents - The Number One Killer in Libya

    Directory of Open Access Journals (Sweden)

    Abdulmajid Ahmed Ali

    2007-01-01

    Full Text Available To The Editor: It is estimated that 1.26 million people worldwide died in 2000 from road traffic accidents, 90% of them in low and middle-income countries. In 2000, the road traffic injury mortality rate for the world was 20.8 per 100,000 populations (30.8 in males, 11.0 in females [1].The Arab population constitutes 3.6% of the world’s population and it owns 1% of the world’s vehicles. Its human losses as a result of road traffic accidents (RTA account for 4.8% of that of the world’s losses [2]. It is estimated that the annual cost of road crashes is about 1% of the Gross National Product (GNP in developing countries, 1.5 in transitional countries and 2% in highly motorised countries [3].In Libya the situation is worse. It is a sad fact that road traffic accidents are the number one killer in Libya. As a matter of fact I consider it to be an ‘epidemic’ in all sectors of the Libyan society. There is not a day that goes by in Libya without us hearing about families, young men, women and children getting killed in horrific car accidents.It is alarming that young children are knocked down on a daily basis by speeding young drivers, whose understanding of driving skills may have been acquired from "playstation games"! (You can watch some of the shameful video clips sent by some of these drivers on this link http://www.youtube.com/watch?v=doWEDjiHlVoI feel it is our responsibility as physicians observing the situation to raise awareness about the scale of the problem, possible causes, and how to tackle it. POSSIBLE CAUSES:• A driving licence in Libya is not issued on the basis of how much you know. Therefore the majority of drivers know little or nothing about the law.• Wearing seat belts is not compulsory in most parts of Libya. In some places, especially in the Eastern part of Libya, you could be penalised for wearing one. I was stopped many years ago by the traffic police in the Eastern part of Libya because I was wearing sunglasses

  9. Cord Blood as a Source of Natural Killer Cells

    Directory of Open Access Journals (Sweden)

    Rohtesh S Mehta

    2016-01-01

    Full Text Available Cord blood (CB offers several unique advantages as a graft source for hematopoietic stem cell transplantation (HSCT. The risk of relapse and graft-versus-host disease (GVHD after cord blood transplantation (CBT are lower than what is typically observed after other graft sources with a similar degree of human leukocyte antigen (HLA mismatch. Natural killer (NK cells have a well-defined role in both innate and adaptive immunity and as the first lymphocytes to reconstitute after HSCT and CBT, they play a significant role in protection against early relapse. In this article, we highlight the uses of CB NK cells in transplantation and adoptive immunotherapy. First, we will describe differences in the phenotype and functional characteristics of NK cells in CB as compared with peripheral blood. Then, we will review some of the obstacles we face in using resting CB NK cells for adoptive immunotherapy, and discuss methods to overcome them. We will review the current literature on killer-cell immunoglobulin-like receptors (KIR-ligand mismatch and outcomes after CBT. Finally, we will touch on current strategiesfor the use of CB NK cells in cellular immunotherapy.

  10. Energy Security: From Deal Killers to Game Changers

    Science.gov (United States)

    Cooke, Charlie

    2010-03-01

    Five energy security ``deal killers" are identified: 1) Global warming and CO2 emissions from fossil fuel combustion; 2) Intermittent energy sources (wind, solar) and the presence and stability of the grid; 3) Penetration of plant defenses to produce transportation fuels from biomass; 4) Mimicking nature: artificial photosynthesis for solar energy to fuels; and 5) Spent fuel from nuclear power reactors. Transformational basic research is required to successfully change the ground rules, to transform these ``deal killers" into ``game changers." T hey are: 1) Offsetting carbon capture and storage costs through enhanced oil recovery and methane generation from high temperature geothermal saline aquifers; 2) Electrical energy storage, through batteries and super-capacitors; 3) Genetic modification of plant cell walls, and catalytic methods for transforming plant sugars into fuels; 4) Separation of solar-induced electrons from holes, and catalysis to produce fuels; and 5) Closing the nuclear fuel cycle. Basic research can revolutionize our approach to carbon-free energy by enhancing nature to achieve energy security.

  11. Interrogating the mirror : double-crossings in Hemingway's "The killers"

    Directory of Open Access Journals (Sweden)

    Steven Carter

    1997-12-01

    Full Text Available Among the early critics who commented on the discrepancies between what "is" and what "seems" in "The Killers" was Edward C. Sampson, who pointed out in 1952 that very little in the story is what it appears to be: Henry's, which serves no alcoholic beverages, is a converted tavern run by George; AI and Max order breakfast at a lunch counter whose menu features dinner; the orders are mixed up; the time on the clock is wrong; Mrs. Hirsch runs Mrs. Bell's rooming house; and so on (item 2. Here Sampson let the matter rest, and most subsequent commentators have been content to see these discrepancies as "framing" the portrait of the disillusioned Nick Adams, who by story's end finds that the world of appearances conceals a terrifying reality beyond his imagination. There is, however, more to the narrative poetics of "The Killers" than a handful of discrepancies, which - significant as they are - do not explain the mechanics or, for that matter, the presence of complementarity throughout the story.

  12. Underwater audiogram of a false killer whale (Pseudorca crassidens).

    Science.gov (United States)

    Thomas, J; Chun, N; Au, W; Pugh, K

    1988-09-01

    Underwater audiograms are available for only a few odontocete species. A false killer whale (Pseudorca crassidens) was trained at Sea Life Park in Oahu, Hawaii for an underwater hearing test using a go/no-go response paradigm. Over a 6-month period, auditory thresholds from 2-115 kHz were measured using an up/down staircase psychometric technique. The resulting audiogram showed hearing sensitivities below 64 kHz similar to those of belugas (Delphinapterus leucas) and Atlantic bottlenosed dolphins (Tursiops truncatus). Above 64 kHz, this Pseudorca had a rapid decrease in sensitivity of about 150 dB per octave. A similar decrease in sensitivity occurs at 32 kHz in the killer whale, at 50 kHz in the Amazon River dolphin, at 120 kHz in the beluga, at 140 kHz in the bottlenosed dolphin, and at 140 kHz in the harbor porpoise. The most sensitive range of hearing was from 16-64 kHz (a range of 10 dB from the maximum sensitivity). This range corresponds with the peak frequency of echolocation pulses recorded from captive Pseudorca.

  13. Improving medication adherence in patients with hypertension

    DEFF Research Database (Denmark)

    Hedegaard, Ulla; Kjeldsen, Lene Juel; Pottegård, Anton

    2015-01-01

    BACKGROUND: and Purpose: In patients with hypertension, medication adherence is often suboptimal, thereby increasing the risk of ischemic heart disease and stroke. In a randomized trial, we investigated the effectiveness of a multifaceted pharmacist intervention in a hospital setting to improve...... medication adherence in hypertensive patients. Motivational interviewing was a key element of the intervention. METHODS: Patients (N=532) were recruited from 3 hospital outpatient clinics and randomized to usual care or a 6-month pharmacist intervention comprising collaborative care, medication review......, tailored adherence counselling including motivational interviewing and telephone follow-ups. The primary outcome was composite medication possession ratio (MPR) to antihypertensive and lipid-lowering agents, at one-year follow-up, assessed by analyzing pharmacy records. Secondary outcomes at 12 months...

  14. Adherence to diabetes medication in individuals with schizophrenia:a systematic review of rates and determinants of adherence

    OpenAIRE

    Gorczynski, Paul; Patel, Hiren; Ganguli, Rohan

    2014-01-01

    Introduction: Despite the importance of medication adherence for the effective treatment of type II diabetes mellitus (T2DM), little research has examined adherence with diabetes medication treatment in schizophrenia. The purpose of this systematic review was to 1) evaluate rates of adherence and determinants of adherence with medication for T2DM in individuals with schizophrenia, and, where possible, 2) examine the relationship between medication adherence and glycemic control. Methods: Stud...

  15. Factors affecting medication adherence in elderly people

    Directory of Open Access Journals (Sweden)

    Jin HK

    2016-10-01

    Full Text Available Hyekyung Jin,1 Yeonhee Kim,2 Sandy Jeong Rhie1,3 1College of Pharmacy, 2Center for Excellence in Teaching & Learning, 3Division of Life and Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea Background: Little is known about the functional health literacy (FHL associated with medication adherence in elderly patients. The aim of this study was to examine the FHL among older adults and identify influencing factors that can predict medication adherence. Methods: This was a cross-sectional survey. Participants (n=160 aged 65 years and older were selected from outpatient clinics of 3 tertiary care hospitals, 6 community pharmacies, and 2 senior centers between November 1 and 30, 2014. The participants’ FHL was measured using the Korean Functional Health Literacy Test, which consists of 15 items including 8 numeracy and 7 reading comprehension items. Medication adherence was measured by the Adherence to Refills and Medication Scale. Descriptive statistics, chi-square or Fisher’s exact test, and multiple regression analyses were used to analyze the data. Results: The mean score of the total FHL was 7.72±3.51 (range 0–15. The percentage of the total number of correct answers for the reading comprehension subtest and numeracy subtest were 48.1% and 54.4%, respectively. Among 160 participants, 52.5% showed low adherence to medication. The factors affecting medication adherence included the patient’s degree of satisfaction with the service (β=-0.215, P=0.022, sufficient explanation of medication counseling (β=-0.335, P=0.000, education level (β=-0.153, P=0.045, health-related problems (β=-0.239, P=0.004, and dosing frequency (β=0.189, P=0.018. Conclusion: In this study, we found medication adherence of elderly patients was associated with education level, health-related problems, dosing frequency, satisfaction with patient counseling, and explanation of medication, but no association was found with FHL. Pharmacists

  16. Adherence to methotrexate in rheumatoid arthritis

    DEFF Research Database (Denmark)

    Bliddal, Henning; Eriksen, Stine A; Christensen, Robin;

    2015-01-01

    Objectives. To study adherence to methotrexate (MTX) and factors of importance thereof in patients with rheumatoid arthritis (RA). Methods. Patients with a hospital diagnosis of RA (ICD10 codes M05.X or M06.X) after January 1, 1997, and aged ≥18 years at the date of first diagnosis/contact, with ......Objectives. To study adherence to methotrexate (MTX) and factors of importance thereof in patients with rheumatoid arthritis (RA). Methods. Patients with a hospital diagnosis of RA (ICD10 codes M05.X or M06.X) after January 1, 1997, and aged ≥18 years at the date of first diagnosis...

  17. Genistein inhibits human TNF-α-induced porcine endothelial cell adhesiveness for human monocytes and natural killer cells

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Cellular immune response is a major barrier to xenotransplantation. Human tumor necrosis factor-α (hTNF-α) possesses cross-species activity and directly amplifies the immune rejection via the upregulation of adhesion molecules on porcine endothelium. We investigated the role of protein tyrosine phosphorylation in the induction of expression of E-sclectin and vascular cell adhesion molecule-1 (VCAM-1), and the augmentation of adhesion of human peripheral blood monocytes (PBMo) and natural killer cells (PBNK), after rhTNF-α-stimulation of porcine aortic endothelial cells (PAEC) in vitro, rhTNF-α-increased adhesiveness of PAEC for both PBMo and PBNK was dose-dependently reduced by pretreatment of PAEC with the selective protein tyrosine kinase (PTK) inhibitor genistein. The inhibitory effect occurred at the early time of PAEC activation triggered by rhTNF-α, and was completely reversible. PTK activity assay indicated that genistein also suppressed rhTNF-α stimulated activation of protein tyrosine kinases (PTKs) in PAEC in a dose-dependent manner. Flow cytometric analysis showed that genistein inhibited the upregulation of E-selectin and VCAM-1 by rhTNF-α. These results suggest that PTKs may regulate the expression of E-selectin and VCAM-1 on PAEC and the adherence of PBMo and PBNK induced by rhTNF-α. Moreover, dietary genistein, used as an adhesion antagonist, may contribute to managing the cell-mediated rejection in the clinical application.

  18. killerFLIP: a novel lytic peptide specifically inducing cancer cell death.

    Science.gov (United States)

    Pennarun, B; Gaidos, G; Bucur, O; Tinari, A; Rupasinghe, C; Jin, T; Dewar, R; Song, K; Santos, M T; Malorni, W; Mierke, D; Khosravi-Far, R

    2013-10-31

    One of the objectives in the development of effective cancer therapy is induction of tumor-selective cell death. Toward this end, we have identified a small peptide that, when introduced into cells via a TAT cell-delivery system, shows a remarkably potent cytoxicity in a variety of cancer cell lines and inhibits tumor growth in vivo, whereas sparing normal cells and tissues. This fusion peptide was named killerFLIP as its sequence was derived from the C-terminal domain of c-FLIP, an anti-apoptotic protein. Using structure activity analysis, we determined the minimal bioactive core of killerFLIP, namely killerFLIP-E. Structural analysis of cells using electron microscopy demonstrated that killerFLIP-E triggers cell death accompanied by rapid (within minutes) plasma membrane permeabilization. Studies of the structure of the active core of killerFLIP (-E) indicated that it possesses amphiphilic properties and self-assembles into micellar structures in aqueous solution. The biochemical properties of killerFLIP are comparable to those of cationic lytic peptides, which participate in defense against pathogens and have also demonstrated anticancer properties. We show that the pro-cell death effects of killerFLIP are independent of its sequence similarity with c-FLIPL as killerFLIP-induced cell death was largely apoptosis and necroptosis independent. A killerFLIP-E variant containing a scrambled c-FLIPL motif indeed induced similar cell death, suggesting the importance of the c-FLIPL residues but not of their sequence. Thus, we report the discovery of a promising synthetic peptide with novel anticancer activity in vitro and in vivo.

  19. Kill the Killers: terapia con células Natural Killer en pacientes pediátricos con cáncer refractario Kill the Killers: Natural Killer cells therapy against paediatric refractory solid tumours

    Directory of Open Access Journals (Sweden)

    J. Valentín Quiroga

    2012-09-01

    Full Text Available Introducción: En el momento actual, los tumores sólidos refractarios al tratamiento convencional constituyen la principal causa de muerte en la edad pediátrica. Por tanto, es necesario desarrollar y consolidar nuevos tratamientos. Las células Natural Killer (NK constituyen la primera línea de defensa del sistema inmune frente al desarrollo de células tumorales. Planteamos una nueva estrategia de terapia celular antitumoral en niños con cánceres refractarios, inmunoterapia con células NK estimuladas con interleucina 15 (IL-15. Pacientes y Métodos: En 22 pacientes pediátricos con tumores sólidos refractarios y en controles sanos determinamos mediante citometría de flujo multiparamétrica y fluorescencia resuelta en el tiempo, el fenotipo y la actividad citotóxica de las células NK, respectivamente. En ratones inmunodeficientes desarrollamos un modelo de neuroblastoma metastático muy agresivo y terapia de rescate con células Natural Killer estimuladas con IL-15. Resultados: Los pacientes pediátricos con cáncer refractario tienen un mayor porcentaje de células NK bright y una menor actividad citotóxica. La estimulación con IL-15 mejora la citotoxicidad in vitro y disminuye la carga tumoral in vivo. Conclusiones: Las células NK estimuladas con IL-15 constituyen una prometedora estrategia antitumoral.Introduction: Refractory solid tumours lead children deaths. To change this statement, new treatments should be developed. Natural Killer cells constitute the first line of defence against tumour cells. We propose a new strategy for antitumor cell therapy in children with refractory solid malignancies: IL-15 stimulated NK cells. Patients and methods: 22 paediatric patients suffering refractory solid tumours participate in this study. We compare NK cell subsets and K562 cytotoxicity in patients and sex-age pair's healthy controls. We use multiparametric flow and time-resolved fluorescent, respectively. In immunocompromised mice we

  20. Introducing the Adherence Strategy Engineering Framework (ASEF)

    DEFF Research Database (Denmark)

    Wagner, Stefan Rahr; Toftegaard, Thomas Skjødeberg; Bertelsen, Olav W.

    2013-01-01

    Background: Patients performing self-care in the unsupervised setting do not always adhere to the instructions they were initially provided with. As a consequence, a patient’s ability to successfully comply with the treatment plan cannot be verified by the treating healthcare professional, possib...

  1. Community health workers adherence to referral guidelines

    DEFF Research Database (Denmark)

    Lal, Sham; Ndyomugenyi, Richard; Paintain, Lucy

    2016-01-01

    Background Many malaria-endemic countries have implemented national community health worker (CHW) programmes to serve remote populations that have poor access to malaria diagnosis and treatment. Despite mounting evidence of CHWs’ ability to adhere to malaria rapid diagnostic tests (RDTs) and trea......Background Many malaria-endemic countries have implemented national community health worker (CHW) programmes to serve remote populations that have poor access to malaria diagnosis and treatment. Despite mounting evidence of CHWs’ ability to adhere to malaria rapid diagnostic tests (RDTs......) and treatment guidelines, there is limited evidence whether CHWs adhere to the referral guidelines and refer severely ill children for further management. In southwest Uganda, this study examined whether CHWs referred children according to training guidelines and described factors associated with adherence...... to the referral guideline. Methods A secondary analysis was undertaken of data collected during two cluster-randomized trials conducted between January 2010 and July 2011, one in a moderate-to-high malaria transmission setting and the other in a low malaria transmission setting. All CHWs were trained to prescribe...

  2. Barriers to adherence in cystic fibrosis

    DEFF Research Database (Denmark)

    Bregnballe, Vibeke; Schiøtz, Peter Oluf

    2012-01-01

    Danish patients with cystic fibrosis aged 14 to 25 years and their parents. Conclusions: The present study showed that the majority of adolescents with CF and their parents experienced barriers to treatment adherence. Patients and parents agreed that the three most common barriers encountered lack...

  3. DRUG COMPLIANCE AND ADHERENCE TO TREATMENT

    Directory of Open Access Journals (Sweden)

    Manmohan

    2012-09-01

    Full Text Available ABSTRACT: BACKGROUND: In spite of any number of medicines will not be of use unless patient takes’ them. After diagnosing the disease, the next most i mportant step is to follow the instructions of physician in terms of treatment. The doctor’s respons ibility does not end with writing prescription, assuming patient will adhere to it. He/ she should cross check the behavior of patient for drug compliance and see that patient follo ws it and get the benefit. Non compliance is the main barrier for the effective delivery of the medical care. This will have greater implications on the economic burde n on the country in terms of frequent hospitalization, use of expensive medicines in case o f relapse due to non adherence.Though the terms compliance and adherence are used synonymously , they differ in the delivery of quality of the medicare as the former implicates the passive fol lowing of the physician instruction, while in the later, patient actively participates in the dev elopment of the treatment plan, which will improves outcome of the treatment. Adherence is the preferred term over compliance by WHO.

  4. Psoriasis: improving adherence to topical therapy.

    NARCIS (Netherlands)

    Feldman, S.R.; Horn, E.J.; Balkrishnan, R.; Basra, M.K.; Finlay, A.Y.; McCoy, D.; Menter, A.; Kerkhof, P.C.M. van de

    2008-01-01

    Topical therapy has an important role in psoriasis treatment. It is efficacious and has a favorable safety profile as demonstrated in clinical trials. However, poor treatment outcomes from topical therapy regimens likely result from poor adherence and ineffective use of the medication. The Internati

  5. Adherence to Exercise and Physical Activity: Preface.

    Science.gov (United States)

    Morgan, William P.; Dishman, Rod K.

    2001-01-01

    Introduces a collection of papers on adherence to exercise programs and physical activity from the 2000 American Academy of Kinesiology and Physical Education conference, which included research on middle school boys and girls, college men and women, and men and women in the later years, as well as on the more traditional subject of middle aged…

  6. Non-adherence in difficult asthma and advances in detection.

    Science.gov (United States)

    Lindsay, John T; Heaney, Liam G

    2013-12-01

    Non-adherence to anti-inflammatory therapies is common in patients referred for specialist assessment at difficult-to-treat asthma services. In the difficult asthma setting, non-adherence to treatment is associated with poor baseline asthma control, increased frequency of exacerbations and asthma-related hospitalizations, as well as increased risk of death. Here, we present a review of the current literature surrounding the prevalence and risks of non-adherence in difficult asthma and we report on current methods of measuring treatment adherence and advances in the detection of non-adherence. We will also explore methods by which non-adherence in difficult asthma can be addressed.

  7. On The Role of Natural Killer Cells in Neurodegenerative Diseases

    Directory of Open Access Journals (Sweden)

    Azzam A. Maghazachi

    2013-02-01

    Full Text Available Natural killer (NK cells exert important immunoregulatory functions by releasing several inflammatory molecules, such as IFN-γ and members of chemokines, which include CCL3/MIP-1α and CCL4/MIP-1β. These cells also express heptahelical receptors, which are coupled to heterotrimeric G proteins that guide them into inflamed and injured tissues. NK cells have been shown to recognize and destroy transformed cells and virally-infected cells, but their roles in neurodegenerative diseases have not been examined in detail. In this review, I will summarize the effects of NK cells in two neurodegenerative diseases, namely multiple sclerosis and globoid cell leukodystrophy. It is hoped that the knowledge obtained from these diseases may facilitate building rational protocols for treating these and other neurodegenerative or autoimmune diseases using NK cells and drugs that activate them as therapeutic tools.

  8. Operational Performance Analysis of Passive Acoustic Monitoring for Killer Whales

    Energy Technology Data Exchange (ETDEWEB)

    Matzner, Shari; Fu, Tao; Ren, Huiying; Deng, Zhiqun; Sun, Yannan; Carlson, Thomas J.

    2011-09-30

    For the planned tidal turbine site in Puget Sound, WA, the main concern is to protect Southern Resident Killer Whales (SRKW) due to their Endangered Species Act status. A passive acoustic monitoring system is proposed because the whales emit vocalizations that can be detected by a passive system. The algorithm for detection is implemented in two stages. The first stage is an energy detector designed to detect candidate signals. The second stage is a spectral classifier that is designed to reduce false alarms. The evaluation presented here of the detection algorithm incorporates behavioral models of the species of interest, environmental models of noise levels and potential false alarm sources to provide a realistic characterization of expected operational performance.

  9. The secretory synapse: the secrets of a serial killer.

    Science.gov (United States)

    Bossi, Giovanna; Trambas, Christina; Booth, Sarah; Clark, Richard; Stinchcombe, Jane; Griffiths, Gillian M

    2002-11-01

    Cytotoxic T lymphocytes (CTLs) destroy their targets by a process involving secretion of specialized granules. The interactions between CTLs and target can be very brief; nevertheless, adhesion and signaling proteins segregate into an immunological synapse. Secretion occurs in a specialized secretory domain. Use of live and fixed cell microscopy allows this secretory synapse to be visualized both temporally and spatially. The combined use of confocal and electron microscopy has produced some surprising findings, which suggest that the secretory synapse may be important both in delivering the lethal hit and in facilitating membrane transfer from target to CTL. Studies on the secretory synapse in wild-type and mutant CTLs have been used to identify proteins involved in secretion. Further clues as to the signals required for secretion are emerging from comparisons of inhibitory and activating synapses formed by natural killer cells.

  10. Jacob--the case of a serial killer.

    Science.gov (United States)

    Kallian, M; Bar-el, Y C; Durst, R; Witztum, E

    1996-01-01

    This paper describes a rare forensic psychiatric syndrome which has been the subject of massive publicity in the last decade. Despite the widespread interest, the psychodynamic process whereby a person becomes a serial murderer remains largely unknown. "Jacob" was convicted of a series of murders that he carried out over a decade. The case material is based on the psychiatric reports that were presented to the court and the many articles published in the local press at the time. Despite the limitations imposed by the material, the available information on "Jacob" bears some similarity to the phenomenological and psychodynamic models described in the literature. An attempt is made to understand the transformation of a person into a serial killer considering the life events, psychopathology and stressors that lead to the emergence from the world of imagination and fantasy of a potential murderer to the deeds that comprise the syndrome.

  11. Hepatic steatosis: A benign disease or a silent killer

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Steatosis is a common feature of many liver diseases, namely non-alcoholic steatohepatitis (NASH) and hepatitis C virus (HCV) infection, but the pathogenic mechanisms differ. Insulin resistance (IR), a key feature of metabolic syndrome, is crucial for NASH development, associated with many underlying genetically determined or acquired mitochondrial and metabolic defects and culminates to inflammation and progression to fibrosis. This may have potential implications for new drug therapy. In HCV-related disease, steatosis impacts both fibrosis progression and response to treatment. Steatosis in HCV-related disease relates to both viral factors (HCV genotype 3), and host factors (alcohol consumption, overweight, hyperlipidemia, diabetes). Among others, IR is a recognized factor. Hepatic steatosis is reported to be associated with disturbance in the signaling cascade of interferon and downregulation of its receptors. Thus, hepatic steatosis should not be considered a benign feature, but rather a silent killer.

  12. Activation of Natural Killer cells during microbial infections

    Directory of Open Access Journals (Sweden)

    Amir eHorowitz

    2012-01-01

    Full Text Available Natural killer (NK cells are large granular lymphocytes that express a diverse array of germline encoded inhibitory and activating receptors for MHC Class I and Class I-like molecules, classical co-stimulatory ligands and cytokines. The ability of NK cells to be very rapidly activated by inflammatory cytokines, to secrete effector cytokines and to kill infected or stressed host cells, suggests that they may be among the very early responders during infection. Recent studies have also identified a small number of pathogen-derived ligands that can bind to NK cell surface receptors and directly induce their activation. Here we review recent studies that have begun to elucidate the various pathways by which viral, bacterial and parasite pathogens activate NK cells. We also consider two emerging themes of NK cell-pathogen interactions, namely their contribution to adaptive immune responses and their potential to take on regulatory and immunomodulatory functions.

  13. Type I Interferons and Natural Killer Cell Regulation in Cancer

    Science.gov (United States)

    Müller, Lena; Aigner, Petra; Stoiber, Dagmar

    2017-01-01

    Type I interferons (IFNs) are known to mediate antitumor effects against several tumor types and have therefore been commonly used in clinical anticancer treatment. However, how IFN signaling exerts its beneficial effects is only partially understood. The clinically relevant activity of type I IFNs has been mainly attributed to their role in tumor immune surveillance. Different mechanisms have been postulated to explain how type I IFNs stimulate the immune system. On the one hand, they modulate innate immune cell subsets such as natural killer (NK) cells. On the other hand, type I IFNs also influence adaptive immune responses. Here, we review evidence for the impact of type I IFNs on immune surveillance against cancer and highlight the role of NK cells therein.

  14. How can gynaecologists cope with the silent killer – osteoporosis?

    Science.gov (United States)

    2017-01-01

    Osteoporosis is a very common disease among women. It is frequently called a silent epidemic and, due to its impact on osteoporotic fractures with high morbidity and mortality, also a silent killer. There are a number of significant risk factors for osteoporosis, some of them very strongly related to the functioning of the reproductive system. These include menstrual irregularities, premature ovarian failure, early natural or surgical menopause, a high number of pregnancies, and long-term breast-feeding. Hence, there is every reason to include gynaecologists in the multidisciplinary team striving to cope with this dreadful disease. Calculation of the 10-year fracture risk, done by means of the FRAX calculator, and classification of women according to the level of risk could prove to be an effective method of limiting the negative effects of osteoporosis.

  15. Bacterial adherence to anodized titanium alloy

    Energy Technology Data Exchange (ETDEWEB)

    Peremarch, C Perez-Jorge; Tanoira, R Perez; Arenas, M A; Matykina, E; Conde, A; De Damborenea, J J; Gomez Barrena, E; Esteban, J, E-mail: cperemarch@fjd.es

    2010-11-01

    The aim of this study was to evaluate Staphylococcus sp adhesion to modified surfaces of anodized titanium alloy (Ti-6Al-4V). Surface modification involved generation of fluoride-containing titanium oxide nanotube films. Specimens of Ti-6Al-4V alloy 6-4 ELI-grade 23- meets the requirements of ASTM F136 2002A (AMS 2631B class A1) were anodized in a mixture of sulphuric/hydrofluoric acid at 20 V for 5 and 60 min to form a 100 nm-thick porous film of 20 nm pore diameter and 230 nm-thick nanotube films of 100 nm in diameter. The amount of fluorine in the oxide films was of 6% and of 4%, respectively. Collection strains and six clinical strains each of Staphylococcus aureus and Staphylococcus epidermidis were studied. The adherence study was performed using a previously published protocol by Kinnari et al. The experiments were performed in triplicates. As a result, lower adherence was detected for collection strains in modified materials than in unmodified controls. Differences between clinical strains were detected for both species (p<0.0001, Kruskal-Wallis test), although global data showed similar results to that of collection strains (p<0.0001, Kruskal-Wallis test). Adherence of bacteria to modified surfaces was decreased for both species. The results also reflect a difference in the adherence between S. aureus and S. epidermidis to the modified material. As a conclusion, not only we were able to confirm the decrease of adherence in the modified surface, but also the need to test multiple clinical strains to obtain more realistic microbiological results due to intraspecies differences.

  16. Natural killer cells: Biology, functions and clinical relevance

    Directory of Open Access Journals (Sweden)

    Vojvodić Svetlana

    2010-01-01

    Full Text Available Introduction. Natural Killer cells (NK cells represent the subset of peripheral lymphocytes that play critical role in the innate immune response to virus-infected and tumor transformed cells. Lysis of NK sensitive target cells could be mediated independently of antigen stimulation and without requirement of peptide presentation by the major histocompatibility complex (MHC molecules. NK cell activity and functions are controlled by a considerable number of cell surface receptors, which exist in both inhibitory and activating isoforms. There are several groups of NK cell surface receptors: 1 killer immunoglobulin like receptors-KIR, 2 C-type lectin receptors,3natural citotoxicity receptors-NCR and 4 Toll-like receptors-TLR. Functions of NK receptors. Defining the biology of NK cell surface receptors has contributed to the concept of the manner how NK cells selectively recognize and lyse tumor and virally infected cells while sparing normal cells. Further, identification of NK receptor ligands and their expression on the normal and transformed cells has led to the development of clinical approaches to manipulating receptor/ligand interactions that showed clinical benefit. NK cells are the first lymphocyte subset that reconstitute the peripheral blood following allogeneic HSCT and multiple roles for alloreactive donor NK cells have been demonstrated, in diminishing Graft vs. Host Disease (GvHD through selective killing recipient dendritic cells, prevention of graft rejection by killing recipient T cells and participation in Graft vs. Leukaemia (GvL effect through destruction of residual host tumor cells. Conclusion. Besides their role in HSCT, NK cell receptors have an important clinical relevance that reflects from the fact that they play a crucial role in the development of some diseases as well as in possibilities of managing all NK receptors through selective expansion and usage of NK cells in cancer immunotherapy.

  17. Regulation of Natural Killer Cell Function by STAT3

    Directory of Open Access Journals (Sweden)

    Nicholas eCacalano

    2016-04-01

    Full Text Available Natural killer (NK cells, key members of a distinct hempatopoietic lineage, innate lymphoid cells (ILCs, are critical effectors that mediate cytotoxicity toward tumor and virally-infected cells but also regulate inflammation, antigen presentation and the adaptive immune response. It has been shown that NK cells can regulate the development and activation of many other components of the immune response such as dendritic cells, which in turn, modulate the function of NK cells in multiple synergistic feed back loops driven by cell-cell contact and the secretion of cytokines and chemokines that control effector function and migration of cells to sites of immune activation. The Signal Transducer and Activator of Transcription (STAT-3 is involved in driving almost all of the pathways that control NK cytolytic activity as well as the reciprocal regulatory interactions between NK cells and other components of the immune system. In the context of tumor immunology, NK cells are a first line of defense that eliminates pre-cancerous and transformed cells early in the process of carcinogenesis, through a mechanism of immune surveillance. Even after tumors become established, NK cells are critical components of anti-cancer immunity: dysfunctional NK cells are often found in the peripheral blood of cancer patients and the lack of NK cells in the tumor microenvironment often correlates with poor prognosis. The pathways and soluble factors activated in tumor-associated NK cells, cancer cells, and regulatory myeloid cells which determine the outcome of cancer immunity are all critically regulated by STAT3. Using the tumor microenvironment as a paradigm, we present here an overview of the research that has revealed fundamental mechanisms through which STAT3 regulates all aspects of natural killer cell biology, including NK development, activation, target cell killing, and fine tuning of the innate and adaptive immune responses.

  18. Experiencing antiretroviral adherence: helping healthcare staff better understand adherence to paediatric antiretrovirals

    Directory of Open Access Journals (Sweden)

    Phelps Benjamin R

    2010-12-01

    Full Text Available Abstract Background Lack of adherence to antiretroviral medications is one of the key challenges for paediatric HIV care and treatment programmes. There are few hands-on opportunities for healthcare workers to gain awareness of the psychosocial and logistic challenges that caregivers face when administering daily antiretroviral therapy to children. This article describes an educational activity that allows healthcare workers to simulate this caregiver role. Methods Paediatric formulations of several antiretroviral medications were dispensed to a convenience sample of staff at the Baylor College of Medicine-Bristol-Myers Squibb Children's Clinical Center of Excellence in Mbabane, Swaziland. The amounts of the medications remaining were collected and measured one week later. Adherence rates were calculated. Following the exercise, a brief questionnaire was administered to all staff participants. Results The 27 clinic staff involved in the exercise had varying and low adherence rates over the week during which the exercise was conducted. Leading perceived barriers to adherence included: "family friends don't help me remember/tell me I shouldn't take it" and "forgot". Participants reported that the exercise was useful as it allowed them to better address the challenges faced by paediatric patients and caregivers. Conclusions Promoting good adherence practices among caregivers of children on antiretrovirals is challenging but essential in the treatment of paediatric HIV. Participants in this exercise achieved poor adherence rates, but identified with many of the barriers commonly reported by caregivers. Simulations such as this have the potential to promote awareness of paediatric ARV adherence issues among healthcare staff and ultimately improve adherence support and patient outcomes.

  19. Ensuring medication adherence with direct oral anticoagulant drugs: lessons from adherence with vitamin K antagonists (VKAs).

    Science.gov (United States)

    Di Minno, Alessandro; Spadarella, Gaia; Tufano, Antonella; Prisco, Domenico; Di Minno, Giovanni

    2014-05-01

    Medication adherence (taking drugs properly) is uncommon among patients on warfarin. Poor adherence to warfarin leads to an increase in adverse medical events, including stroke in atrial fibrillation (AF). Factors related to patients, physicians and the health system account for poor adherence. Direct oral anticoagulants (DOACs) are easier to use than warfarin, with fewer drug and food interactions and no need for routine blood monitoring. A proper use of DOACs may reduce the risk of stroke in AF. However, in clinical settings where no laboratory monitoring is needed, a poor medication adherence is common and may impact clinical outcomes. In the management of chronic disorders, careful knowledge of the individual patient's attitudes and behaviors is a pre-requisite for a successful doctor-patient communication. To increase patient's awareness of the risks and benefits of DOACs and, in turn, increase medication adherence, at each follow-up visit physicians should screen for priorities and motivational problems; check for the lack of understanding and/or knowledge; assess any health system or personal barriers to medication adherence; identify appropriate interventions and provide tailored support to patient needs. Dissemination of guidelines to the health care chain (prescribing physician, general practitioners, caregivers, nurses, pharmacists) further encourages medication adherence. However, the long-term effect of some of these strategies is unknown; one tool may not fit all patients, and the prescribing physician should consider individualization of these aids to ensure medication adherence and persistence (continuing to take drugs properly in long-term treatments) for DOACs in every day practice.

  20. Target Strength of Southern Resident Killer Whales (Orcinus orca): Measurement and Modeling

    Energy Technology Data Exchange (ETDEWEB)

    Xu, Jinshan; Deng, Zhiqun; Carlson, Thomas J.; Moore, Brian

    2012-04-04

    A major criterion for tidal power licensing in Washington’s Puget Sound is the management of the risk of injury to killer whales due to collision with moving turbine blades. An active monitoring system is being proposed for killer whale detection, tracking, and alerting that links to and triggers temporary turbine shutdown when there is risk of collision. Target strength (TS) modeling of the killer whale is critical to the design and application of any active monitoring system. A 1996 study performed a high-resolution measurement of acoustic reflectivity as a function of frequency of a female bottlenose dolphin (2.2 m length) at broadside aspect and TS as a function of incident angle at 67 kHz frequency. Assuming that killer whales share similar morphology structure with the bottlenose dolphin, we extrapolated the TS of an adult killer whale 7.5 m in length at 67 kHz frequency with -8 dB at broadside aspect and -28 dB at tail side. The backscattering data from three Southern Resident killer whales were analyzed to obtain the TS measurement. These data were collected at Lime Kiln State Park using a split-beam system deployed from a boat. The TS of the killer whale at higher frequency (200 kHz) was estimated based on a three-layer model for plane wave reflection from the lung of the whale. The TS data of killer whales were in good agreement with our model. In this paper, we also discuss and explain possible causes for measurement estimation error.

  1. Competing conservation objectives for predators and prey: estimating killer whale prey requirements for Chinook salmon.

    Directory of Open Access Journals (Sweden)

    Rob Williams

    Full Text Available Ecosystem-based management (EBM of marine resources attempts to conserve interacting species. In contrast to single-species fisheries management, EBM aims to identify and resolve conflicting objectives for different species. Such a conflict may be emerging in the northeastern Pacific for southern resident killer whales (Orcinus orca and their primary prey, Chinook salmon (Oncorhynchus tshawytscha. Both species have at-risk conservation status and transboundary (Canada-US ranges. We modeled individual killer whale prey requirements from feeding and growth records of captive killer whales and morphometric data from historic live-capture fishery and whaling records worldwide. The models, combined with caloric value of salmon, and demographic and diet data for wild killer whales, allow us to predict salmon quantities needed to maintain and recover this killer whale population, which numbered 87 individuals in 2009. Our analyses provide new information on cost of lactation and new parameter estimates for other killer whale populations globally. Prey requirements of southern resident killer whales are difficult to reconcile with fisheries and conservation objectives for Chinook salmon, because the number of fish required is large relative to annual returns and fishery catches. For instance, a U.S. recovery goal (2.3% annual population growth of killer whales over 28 years implies a 75% increase in energetic requirements. Reducing salmon fisheries may serve as a temporary mitigation measure to allow time for management actions to improve salmon productivity to take effect. As ecosystem-based fishery management becomes more prevalent, trade-offs between conservation objectives for predators and prey will become increasingly necessary. Our approach offers scenarios to compare relative influence of various sources of uncertainty on the resulting consumption estimates to prioritise future research efforts, and a general approach for assessing the extent of

  2. Adherence of Moraxella bovis to cell cultures of bovine origin.

    Science.gov (United States)

    Annuar, B O; Wilcox, G E

    1985-09-01

    The adherence of five strains of Moraxella bovis to cell cultures was investigated. M bovis adhered to cultures of bovine corneal epithelial and Madin-Darby bovine kidney cells but not to cell types of non-bovine origin. Both piliated and unpiliated strains adhered but piliated strains adhered to a greater extent than unpiliated strains. Antiserum against pili of one strain inhibited adherence of piliated strains but caused only slight inhibition of adherence to the unpiliated strains. Treatment of bacteria with magnesium chloride caused detachment of pili from the bacterial cell and markedly inhibited adherence of piliated strains but caused only slight inhibition of adherence by the unpiliated strains. The results suggested that adhesion of piliated strains to cell cultures was mediated via pili but that adhesins other than pili may be involved in the attachment of unpiliated strains of M bovis to cells.

  3. Células natural killer e vigilância imunológica Natural killer cells and immune surveillance

    Directory of Open Access Journals (Sweden)

    Mariana Jobim

    2008-08-01

    Full Text Available OBJETIVOS: Analisar a importância das células natural killer, de seus receptores killer immunoglobulin-like receptors e correspondentes genes (KIR na vigilância imunológica do organismo contra agentes infecciosos, transplantes de células-tronco hematopoiéticas, assim como sua participação na auto-imunidade. As características e o polimorfismo dos genes e receptores KIR na população brasileira serão descritos. FONTES DOS DADOS: Livros, artigos de revisão e artigos científicos recentes são citados e listados na bibliografia. A experiência pessoal é também apresentada. SÍNTESE DOS DADOS: Identificamos o perfil de genes e haplótipos KIR na população caucasóide brasileira, sendo de importância esse conhecimento para a análise da relação desse sistema com doenças. Examinamos 116 indivíduos doadores voluntários de medula óssea, identificando-se 32 genótipos e a presença de 51 e 49% de haplótipos A e B, respectivamente. Foi realizado estudo comparativo entre os nossos genótipos e os de outras populações. CONCLUSÕES: A imunidade inata é uma barreira antiinfecciosa de importância em pediatria. Ela atua de maneira independente da imunidade celular e humoral, sendo mais rápida que as demais fontes de proteção do organismo. Ao mesmo tempo, ela estimula os linfócitos T CD8 a agirem e amplificarem a rede de proteção imunológica. Entretanto, como na maioria das vezes em que a imunidade atua, ela também pode ser prejudicial, agredindo o organismo por mecanismos auto-imunes ou mesmo, na sua ausência, oferecer espaço aos agentes infecciosos para agirem de forma impune.OBJECTIVES: To analyze the importance of natural killer cells, their killer immunoglobulin-like receptors (KIR and genes in autoimmunity and in the immune surveillance against infectious agents and stem cells transplantation. The characteristics and polymorphisms of the KIR genes and receptors in the Brazilian population is described. SOURCES

  4. Pollen Killer Gene S35 Function Requires Interaction with an Activator That Maps Close to S24, Another Pollen Killer Gene in Rice

    Directory of Open Access Journals (Sweden)

    Takahiko Kubo

    2016-05-01

    Full Text Available Pollen killer genes disable noncarrier pollens, and are responsible for male sterility and segregation distortion in hybrid populations of distantly related plant species. The genetic networks and the molecular mechanisms underlying the pollen killer system remain largely unknown. Two pollen killer genes, S24 and S35, have been found in an intersubspecific cross of Oryza sativa ssp. indica and japonica. The effect of S24 is counteracted by an unlinked locus EFS. Additionally, S35 has been proposed to interact with S24 to induce pollen sterility. These genetic interactions are suggestive of a single S24-centric genetic pathway (EFS–S24–S35 for the pollen killer system. To examine this hypothetical genetic pathway, the S35 and the S24 regions were further characterized and genetically dissected in this study. Our results indicated that S35 causes pollen sterility independently of both the EFS and S24 genes, but is dependent on a novel gene close to the S24 locus, named incentive for killing pollen (INK. We confirmed the phenotypic effect of the INK gene separately from the S24 gene, and identified the INK locus within an interval of less than 0.6 Mb on rice chromosome 5. This study characterized the genetic effect of the two independent genetic pathways of INK–S35 and EFS–S24 in indica–japonica hybrid progeny. Our results provide clear evidence that hybrid male sterility in rice is caused by several pollen killer networks with multiple factors positively and negatively regulating pollen killer genes.

  5. Improving adherence to medical regimens for juvenile rheumatoid arthritis

    Directory of Open Access Journals (Sweden)

    Lindsley Carol B

    2007-05-01

    Full Text Available Abstract Poor adherence to medical regimens can compromise the efficacy of treatments for children and adolescents with juvenile rheumatoid arthritis (JRA. The purpose of this review is to describe medical regimens for the treatment of JRA and the rates of adherence to these regimens. We also summarize and critically the few research studies aimed at improving adherence to regimens for JRA. Finally, we summarize strategies for enhancing adherence in clinical practice.

  6. Iron Chelation Adherence to Deferoxamine and Deferasirox in Thalassemia

    OpenAIRE

    Trachtenberg, Felicia; Vichinsky, Elliott; Haines, Dru; Pakbaz, Zahra; Mednick, Lauren; Sobota, Amy; Kwiatkowski, Janet; Thompson, Alexis A.; Porter, John; Coates, Thomas; Giardina, Patricia J.; Olivieri, Nancy; Yamashita, Robert; Neufeld, Ellis J.

    2011-01-01

    The Thalassemia Clinical Research Network collected adherence information from 79 patients on deferoxamine and 186 on deferasirox from 2007 to 2009. Chelation adherence was defined as percent of doses administered in the last 4 weeks (patient report) out of those prescribed (chart review). Chelation history since 2002 was available for 97 patients currently on deferoxamine and 217 on deferasirox, with crude estimates of adherence from chart review. Self-reported adherence to both deferoxamine...

  7. Medication adherence among transgender women living with HIV

    OpenAIRE

    2016-01-01

    Medication adherence is linked to health outcomes among adults with HIV infection. Transgender women living with HIV (TWLWH) in the U.S. report suboptimal adherence to medications and are found to have difficulty integrating HIV medication into their daily routine, but few studies explore factors associated with medication adherence among transgender women. Thus, the purpose of this paper is to examine demographic and clinical factors related to self-reported medication adherence among transg...

  8. Habitat-based PCB environmental quality criteria for the protection of endangered killer whales (Orcinus orca).

    Science.gov (United States)

    Alava, Juan José; Ross, Peter S; Lachmuth, Cara; Ford, John K B; Hickie, Brendan E; Gobas, Frank A P C

    2012-11-20

    The development of an area-based polychlorinated biphenyl (PCB) food-web bioaccumulation model enabled a critical evaluation of the efficacy of sediment quality criteria and prey tissue residue guidelines in protecting fish-eating resident killer whales of British Columbia and adjacent waters. Model-predicted and observed PCB concentrations in resident killer whales and Chinook salmon were in good agreement, supporting the model's application for risk assessment and criteria development. Model application shows that PCB concentrations in the sediments from the resident killer whale's Critical Habitats and entire foraging range leads to PCB concentrations in most killer whales that exceed PCB toxicity threshold concentrations reported for marine mammals. Results further indicate that current PCB sediment quality and prey tissue residue criteria for fish-eating wildlife are not protective of killer whales and are not appropriate for assessing risks of PCB-contaminated sediments to high trophic level biota. We present a novel methodology for deriving sediment quality criteria and tissue residue guidelines that protect biota of high trophic levels under various PCB management scenarios. PCB concentrations in sediments and in prey that are deemed protective of resident killer whale health are much lower than current criteria values, underscoring the extreme vulnerability of high trophic level marine mammals to persistent and bioaccumulative contaminants.

  9. Killer Treg restore immune homeostasis and suppress autoimmune diabetes in prediabetic NOD mice.

    Science.gov (United States)

    Kaminitz, Ayelet; Yolcu, Esma S; Stein, Jerry; Yaniv, Isaac; Shirwan, Haval; Askenasy, Nadir

    2011-08-01

    We hypothesized that regulatory T cells (Treg) effectively target diabetogenic cells, and reinforcing their killing capacity will attenuate the course of disease. For proof of concept, Fas-ligand (FasL) protein was conjugated to CD25(+) Treg (killer Treg) to simulate the physiological mechanism of activation-induced cell death. Cytotoxic and suppressive activity of killer Treg was superior to naïve Treg in vitro. Administration of 3-4 × 10(6) Treg prevented hyperglycemia in 65% prediabetic NOD females, however only killer Treg postponed disease onset by 14 weeks. CD25(+) Treg homed to the pancreas and regional lymph nodes of prediabetic NOD females, proliferated and ectopic FasL protein induced apoptosis in CD25(-) T cells in situ. This mechanism of pathogenic cell debulking is specific to killer Treg, as FasL-coated splenocytes have no immunomodulatory effect, and only killer Treg prevent the disease in 80% of NOD.SCID recipients of effector:suppressor T cells (10:1 ratio). All immunomodulated mice displayed increased fractional expression of FoxP3 in the pancreas and draining lymph nodes, which was accompanied by CD25 only in recipients of killer Treg. A therapeutic intervention that uses the affinity of Treg to reduce the pathogenic load has long-term consequences: arrest of destructive insulitis in mice with established disease prior to β-cell extinction.

  10. Understanding how adherence goals promote adherence behaviours: a repeated measure observational study with HIV seropositive patients

    Directory of Open Access Journals (Sweden)

    Jones Gareth

    2012-08-01

    Full Text Available Abstract Background The extent to which patients follow treatments as prescribed is pivotal to treatment success. An exceptionally high level (> 95% of HIV medication adherence is required to suppress viral replication and protect the immune system and a similarly high level (> 80% of adherence has also been suggested in order to benefit from prescribed exercise programmes. However, in clinical practice, adherence to both often falls below the desirable level. This project aims to investigate a wide range of psychological and personality factors that may lead to adherence/non-adherence to medical treatment and exercise programmes. Methods HIV positive patients who are referred to the physiotherapist-led 10-week exercise programme as part of the standard care are continuously recruited. Data on social cognitive variables (attitude, intention, subjective norms, self-efficacy, and outcome beliefs about the goal and specific behaviours, selected personality factors, perceived quality of life, physical activity, self-reported adherence and physical assessment are collected at baseline, at the end of the exercise programme and again 3 months later. The project incorporates objective measures of both exercise (attendance log and improvement in physical measures such as improved fitness level, weight loss, improved circumferential anthropometric measures and medication adherence (verified by non-invasive hair analysis. Discussion The novelty of this project comes from two key aspects, complemented with objective information on exercise and medication adherence. The project assesses beliefs about both the underlying goal such as following prescribed treatment; and about the specific behaviours such as undertaking the exercise or taking the medication, using both implicit and explicit assessments of patients’ beliefs and attitudes. We predict that i the way people think about the underlying goal of their treatments explains medication and exercise

  11. Medication Adherence in Psychopharmacologically Treated Adults with ADHD

    Science.gov (United States)

    Safren, Steven A.; Duran, Petra; Yovel, Iftah; Perlman, Carol A.; Sprich, Susan

    2007-01-01

    Objective: One of the potential causes of residual symptoms of ADHD in adults can be difficulties with consistent adherence to medications. Method: This formative study examined self-reported medication adherence in adults with ADHD with clinically significant symptoms despite medication treatment. Results: Mean adherence for the two-week period…

  12. Adhesion Forces and Composition of Planktonic and Adhering Oral Microbiomes

    NARCIS (Netherlands)

    Wessel, S. W.; Chen, Y.; Maitra, A.; van den Heuvel, E. R.; Slomp, A. M.; Busscher, H. J.; van der Mei, H. C.

    2014-01-01

    The oral microbiome consists of a planktonic microbiome residing in saliva and an adhering microbiome (the biofilm adhering to oral hard and soft tissues). Here we hypothesized that possible differences in microbial composition of the planktonic and adhering oral microbiome on teeth can be related t

  13. Measuring adherence to treatment of paediatric HIV/AIDS.

    Science.gov (United States)

    Naar-King, S; Frey, M; Harris, M; Arfken, C

    2005-04-01

    Parent, child, physician report and pill counts were used to measure adherence in paediatric HIV. Relationships to viral load were assessed. Pill counts were considered invalid. Adherence measures did not correlate with one another. Physicians reported lower adherence than parents, but parent and physician report correlated with viral load. The clinical and research utility of the various measures are discussed.

  14. 78 FR 34109 - ``Script Your Future'' Medication Adherence Campaign

    Science.gov (United States)

    2013-06-06

    ... HUMAN SERVICES Food and Drug Administration ``Script Your Future'' Medication Adherence Campaign AGENCY... importance of medication adherence to enhance the health of Americans. Medication adherence is taking... each patient. Nearly three out of four Americans report that they do not take their medication...

  15. A Matter of Trust: Patient Barriers to Primary Medication Adherence

    Science.gov (United States)

    Polinski, J. M.; Kesselheim, A. S.; Frolkis, J. P.; Wescott, P.; Allen-Coleman, C.; Fischer, M. A.

    2014-01-01

    Primary medication adherence occurs when a patient properly fills the first prescription for a new medication. Primary adherence only occurs about three-quarters of the time for antihypertensive medications. We assessed patients' barriers to primary adherence and attributes of patient-provider discussions that might improve primary adherence…

  16. Medication adherence among older adults with schizophrenia.

    Science.gov (United States)

    Leutwyler, Heather C; Fox, Patrick J; Wallhagen, Margaret

    2013-02-01

    Older adults with schizophrenia are a growing segment of the population, yet their physical and mental health status is extremely poor. This article presents findings from a qualitative study that explored the understanding older adults with schizophrenia have of their physical health status. The study was conducted among 28 older adults with schizophrenia from a variety of settings using semi-structured interviews and participant observation. Self-management of psychiatric and non-psychiatric medications and its effect on participants' health status was one of the central themes that emerged from the study. Different styles of medication adherence were identified and factors associated with each style are presented. The findings provide insights into the design of clinical interventions aimed at promoting medication adherence among older adults with schizophrenia.

  17. Improving diabetes medication adherence: successful, scalable interventions

    Directory of Open Access Journals (Sweden)

    Zullig LL

    2015-01-01

    Full Text Available Leah L Zullig,1,2 Walid F Gellad,3,4 Jivan Moaddeb,2,5 Matthew J Crowley,1,2 William Shrank,6 Bradi B Granger,7 Christopher B Granger,8 Troy Trygstad,9 Larry Z Liu,10 Hayden B Bosworth1,2,7,11 1Center for Health Services Research in Primary Care, Durham Veterans Affairs Medical Center, Durham, NC, USA; 2Department of Medicine, Duke University, Durham, NC, USA; 3Center for Health Equity Research and Promotion, Pittsburgh Veterans Affairs Medical Center, Pittsburgh, PA, USA; 4Division of General Internal Medicine, University of Pittsburgh, Pittsburgh, PA, USA; 5Institute for Genome Sciences and Policy, Duke University, Durham, NC, USA; 6CVS Caremark Corporation; 7School of Nursing, Duke University, Durham, NC, USA; 8Department of Medicine, Division of Cardiology, Duke University School of Medicine, Durham, NC, USA; 9North Carolina Community Care Networks, Raleigh, NC, USA; 10Pfizer, Inc., and Weill Medical College of Cornell University, New York, NY, USA; 11Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, NC, USA Abstract: Effective medications are a cornerstone of prevention and disease treatment, yet only about half of patients take their medications as prescribed, resulting in a common and costly public health challenge for the US healthcare system. Since poor medication adherence is a complex problem with many contributing causes, there is no one universal solution. This paper describes interventions that were not only effective in improving medication adherence among patients with diabetes, but were also potentially scalable (ie, easy to implement to a large population. We identify key characteristics that make these interventions effective and scalable. This information is intended to inform healthcare systems seeking proven, low resource, cost-effective solutions to improve medication adherence. Keywords: medication adherence, diabetes mellitus, chronic disease, dissemination research

  18. A Study of Adherent Oxide Formation

    Science.gov (United States)

    1983-10-01

    improve oxide scale adherence to NiCrAl were investigated. Laser-processed materials were isothermally and cyclically oxidized and oxide scale...modified NiCrAl altered the morphology of the alumina scale and promoted the formation of a thinner, dense protective layer. • Thin aluminum oxide films...6 A. Materials. ........................... 6 B. Oxidation Studies. ....................... 7 1. NiCrAl .. .......................... 7a2

  19. Pharmacy Adherence Measures to Assess Adherence to Antiretroviral Therapy: Review of the Literature and Implications for Treatment Monitoring

    OpenAIRE

    Mayer, Kenneth H.; McMahon, James H.; Jordan, Michael R.; Kelley, Karen; Bertagnolio, Silvia; Hong, Steven Y.; Wanke, Christine A.; Sharon R Lewin; Elliott, Julian H.

    2011-01-01

    Prescription or pill-based methods for estimating adherence to antiretroviral therapy (ART), pharmacy adherence measures (PAMs), are objective estimates calculated from routinely collected pharmacy data. We conducted a literature review to evaluate PAMs, including their association with virological and other clinical outcomes, their efficacy compared with other adherence measures, and factors to consider when selecting a PAM to monitor adherence. PAMs were classified into 3 categories: medica...

  20. Concordance of adherence measurement using self-reported adherence questionnaires and medication monitoring devices.

    Science.gov (United States)

    Shi, Lizheng; Liu, Jinan; Koleva, Yordanka; Fonseca, Vivian; Kalsekar, Anupama; Pawaskar, Manjiri

    2010-01-01

    The primary objective of this review was to identify and examine the literature on the association between medication adherence self-reported questionnaires (SRQs) and medication monitoring devices. The primary literature search was performed for 1980-2009 using PubMed, PubMed In Process and Non-Indexed, Ovid MEDLINE, Ovid MEDLINE In-Process, PsycINFO (EBSCO), CINAHL (EBSCO), Ovid HealthStar, EMBASE (Elsevier) and Cochrane Databases and using the following search terms: 'patient compliance', 'medication adherence', 'treatment compliance', 'drug monitoring', 'drug therapy', 'electronic', 'digital', 'computer', 'monitor', 'monitoring', 'drug', 'drugs', 'pharmaceutical preparations', 'compliance' and 'medications'. We identified studies that included SRQs and electronic monitoring devices to measure adherence and focused on the SRQs that were found to be moderately to highly correlated with the monitoring devices. Of the 1679 citations found via the primary search, 41 full-text articles were reviewed for correlation between monitoring devices and SRQs. A majority (68%) of articles reported high (27%), moderate (29%) or significant (12%) correlation between monitoring devices (37 using Medication Event Monitoring System [MEMS®] and four using other devices) and SRQs (11 identified and numerous other unnamed SRQs). The most commonly used SRQs were the Adult/Pediatric AIDS Clinical Trial Group (AACTG/PACTG; 24.4%, 10/41) followed by the 4-item Morisky (9.8%, 4/41), Brief Medication Questionnaire (9.8%, 4/41) and visual analogue scale (VAS; 7.3%, 3/41). Although study designs differed across the articles, SRQs appeared to report a higher rate of medication adherence (+14.9%) than monitoring devices. In conclusion, several medication adherence SRQs were validated using electronic monitoring devices. A majority of them showed high or moderate correlation with medication adherence measured using monitoring devices, and could be considered for measuring patient

  1. Can adherence to antihypertensive therapy be used to promote adherence to statin therapy?

    Directory of Open Access Journals (Sweden)

    Richard H Chapman

    2009-08-01

    Full Text Available Richard H Chapman1, Elise M Pelletier1, Paula J Smith1, Craig S Roberts21US Health Economics and Outcomes Research, IMS Health, Falls Church, VA, USA; 2Global Outcomes Research, Pfizer Inc, New York, NY, USAObjective: To compare adherence with statin therapy in patients switching to single-pill amlodipine besylate/atorvastatin calcium with patients adding a separate statin to their amlodipine regimen.Methods: We identified hypertensive patients prescribed amlodipine who switched to amlodipine/atorvastatin (switch or added a statin to their amlodipine regimen (add-on from July 2004 to June 2007. Propensity score matching (1 switch:3 add-on was applied based on ‘nearest neighbor’ approach. The primary adherence measure was patients with proportion of days covered (PDC ≥0.80 at 180 days; secondary measures included mean PDC and persistence. A sensitivity analysis was performed, accounting for total statin/amlodipine exposure.Results: Among 4556 matched patients (n = 1139 switch; n = 3417 add-on, mean age was 53.9 years and 52.1% were male. After 180 days, adherence with statin therapy was higher for the switch vs add-on cohort (50.8% vs 44.3%; P < 0.001. After adjusting for pre-index amlodipine adherence, the switch cohort was more likely to be adherent than the add-on cohort (odds ratio: 1.64 [95% confidence interval: 1.42 to 1.89]. Persistence was higher in the switch than the add-on cohort (127.6 vs 117 days; P < 0.001.Conclusion: Hypertensive patients taking amlodipine who initiated statin therapy via single-pill amlodipine/atorvastatin were more likely to remain adherent to their statin than patients adding a separate statin to their antihypertensive regimen.Keywords: adherence, amlodipine, atorvastatin, cardiovascular disease, persistence, single-pill

  2. Adherence to asthma guidelines in general practices.

    Science.gov (United States)

    Roghmann, M C; Sexton, M

    1999-06-01

    Adherence to asthma practice guidelines is low. Improved compliance could potentially improve care of patients with asthma. The purpose of this study was to determine if patients managed in a general practice with an associated asthma clinic are more likely to use asthma medications according to clinical practice guidelines than patients managed in the general surgery of the practice. A cross-sectional study of adult asthmatics, aged 18-55 years, was conducted in six British general practices. Prescription data on all asthma medication was collected for a 6-month period. Information on asthma clinic attendance, age, sex, employment status, other medical illness, and how patients used their inhaled beta2-agonist was collected through questionnaire. The prescription data for asthma medication and patient use of inhaled beta2-agonist were compared to the British Thoracic Society's (BTS) Guidelines for Management of Asthma in Adults to determine if the patient's asthma medication regimen was appropriate. There was no significant association found between appropriate asthma medication and asthma clinic attendance or other patient characteristics. Adherence to the BTS guidelines was low. Fifty-eight percent of the asthma patients used asthma medication regimens that were not consistent with the BTS guidelines published 1 year earlier. Adherence to the BTS guidelines was low regardless of patient characteristics, including asthma clinic attendance, age, sex, employment status, other medical illness, or individual practice. These findings underscore the need to document the utility of clinical practice guidelines which may improve physician compliance.

  3. Adherence to physical and mental activity interventions: Coping plans as a mediator and prior adherence as a moderator.

    NARCIS (Netherlands)

    Evers, A.W.M.; Klusmann, V.; Schwarzer, R.; Heuser, I.

    2012-01-01

    Objective. Adherence to behavioural intervention programmes is a necessary condition for beneficial outcomes to be achieved. This study tested whether social cognitive variables and coping plans predict adherence. Design and methods. Adherence was examined in a randomized controlled trial with healt

  4. Adherence of Helicobacter pylori to the Gastric Mucosa

    Directory of Open Access Journals (Sweden)

    Marguerite Clyne

    1997-01-01

    Full Text Available Bacterial adhesion to the intestinal epithelium is a critical initial step in the pathogenesis of many enteric diseases. Helicobacter pylori is a duodenal pathogen that adheres to the gastric epithelium and causes gastritis and peptic ulceration. The mechanism by which H pylori causes disease has not yet been elucidated but adherence to the gastric mucosa is thought to be an important virulence determinant of the organism. What is known about adherence of H pylori to the gastric mucosa is summarized. Topics discussed are the mechanism of H pylori adherence; in vitro and in vivo models of H pylori infection; and adherence and potential adhesins and receptors for H pylori.

  5. Adherence Characteristics of Cement Clinker on Basic Bricks

    Institute of Scientific and Technical Information of China (English)

    GUO Zongqi; Michel Rigaud

    2002-01-01

    Based on the sandwich test, adherence mechanisms of cement clinker on various basic bricks were tackled by microstructural observations with help of cathodoluminescence technique. Doloma based bricks offer sufficient lime to react with clinker, forming C3 S rich layer and initializing superior adherence. However, clinker with low silica ratio leads to MgO agglomeration at the interface of doloma bricks, which reduces adherence strength. On magnesia spinel bricks, fine, crystalline spinel easily reacts with lime containing phases from clinker to form lowmelting phases and belite zone, which shows high adherence performance. Lack of fine spinel in magnesia spinel bricks results in poor adherence.

  6. Killer toxin of Saccharomyces cerevisiae Y500-4L active against Fleischmann and Itaiquara commercial brands of yeast

    Directory of Open Access Journals (Sweden)

    Soares Giselle A.M.

    1999-01-01

    Full Text Available The strain Saccharomyces cerevisiae Y500-4L, previously selected from the must of alcohol producing plants and showing high fermentative and killer capacities, was characterized according to the interactions between the yeasts and examined for curing and detection of dsRNA plasmids, which code for the killer character. The killer yeast S. cerevisiae Y500-4L showed considerable killer activity against the Fleischmann and Itaiquara commercial brands of yeast and also against the standard killer yeasts K2 (S. diastaticus NCYC 713, K4 (Candida glabrata NCYC 388 and K11 (Torulopsis glabrata ATCC 15126. However S. cerevisiae Y500-4L showed sensitivity to the killer toxin produced by the standard killer yeasts K8 (Hansenula anomala NCYC 435, K9 (Hansenula mrakii NCYC 500, K10 (Kluyveromyces drosophilarum NCYC 575 and K11 (Torulopsis glabrata ATCC 15126. No M-dsRNA plasmid was detected in the S. cerevisiae Y500-4L strain and these results suggest that the genetic basis for toxin production is encoded by chromosomal DNA. The strain S. cerevisiae Y500-4L was more resistant to the loss of the phenotype killer with cycloheximide and incubation at elevated temperatures (40oC than the standard killer yeast S. cerevisiae K1.

  7. Longitudinal evaluation of leukocyte transcripts in killer whales (Orcinus Orca)

    Science.gov (United States)

    Sitt, Tatjana; Bowen, Lizabeth; Lee, Chia-Shan; Blanchard, Myra; McBain, James; Dold, Christopher; Stott, Jeffrey L.

    2016-01-01

    Early identification of illness and/or presence of environmental and/or social stressors in free-ranging and domestic cetaceans is a priority for marine mammal health care professionals. Incorporation of leukocyte gene transcript analysis into the diagnostic tool kit has the potential to augment classical diagnostics based upon ease of sample storage and shipment, inducible nature and well-defined roles of transcription and associated downstream actions. Development of biomarkers that could serve to identify “insults” and potentially differentiate disease etiology would be of great diagnostic value. To this end, a modest number of peripheral blood leukocyte gene transcripts were selected for application to a domestic killer whale population with a focus on broad representation of inducible immunologically relevant genes. Normalized leukocyte transcript values, longitudinally acquired from 232 blood samples derived from 26 clinically healthy whales, were not visibly influenced temporally nor by sex or the specific Park in which they resided. Stability in leukocyte transcript number during periods of health enhances their potential use in diagnostics through identification of outliers. Transcript levels of two cytokine genes, IL-4 and IL-17, were highly variable within the group as compared to the other transcripts. IL-4 transcripts were typically absent. Analysis of transcript levels on the other genes of interest, on an individual animal basis, identified more outliers than were visible when analyzed in the context of the entire population. The majority of outliers (9 samples) were low, though elevated transcripts were identified for IL-17 from 2 animals and one each for Cox-2 and IL-10. The low number of outliers was not unexpected as sample selection was intentionally directed towards animals that were clinically healthy at the time of collection. Outliers may reflect animals experiencing subclinical disease that is transient and self-limiting. The

  8. Longitudinal evaluation of leukocyte transcripts in killer whales (Orcinus Orca).

    Science.gov (United States)

    Sitt, Tatjana; Bowen, Lizabeth; Lee, Chia-Shan; Blanchard, Myra T; McBain, James; Dold, Christopher; Stott, Jeffrey L

    2016-07-01

    Early identification of illness and/or presence of environmental and/or social stressors in free-ranging and domestic cetaceans is a priority for marine mammal health care professionals. Incorporation of leukocyte gene transcript analysis into the diagnostic tool kit has the potential to augment classical diagnostics based upon ease of sample storage and shipment, inducible nature and well-defined roles of transcription and associated downstream actions. Development of biomarkers that could serve to identify "insults" and potentially differentiate disease etiology would be of great diagnostic value. To this end, a modest number of peripheral blood leukocyte gene transcripts were selected for application to a domestic killer whale population with a focus on broad representation of inducible immunologically relevant genes. Normalized leukocyte transcript values, longitudinally acquired from 232 blood samples derived from 26 clinically healthy whales, were not visibly influenced temporally nor by sex or the specific Park in which they resided. Stability in leukocyte transcript number during periods of health enhances their potential use in diagnostics through identification of outliers. Transcript levels of two cytokine genes, IL-4 and IL-17, were highly variable within the group as compared to the other transcripts. IL-4 transcripts were typically absent. Analysis of transcript levels on the other genes of interest, on an individual animal basis, identified more outliers than were visible when analyzed in the context of the entire population. The majority of outliers (9 samples) were low, though elevated transcripts were identified for IL-17 from 2 animals and one each for Cox-2 and IL-10. The low number of outliers was not unexpected as sample selection was intentionally directed towards animals that were clinically healthy at the time of collection. Outliers may reflect animals experiencing subclinical disease that is transient and self-limiting. The immunologic

  9. Sharia Adherence Mosque Survey: Correlations between Sharia Adherence and Violent Dogma in U.S. Mosques

    Directory of Open Access Journals (Sweden)

    Mordechai Kedar

    2011-12-01

    Full Text Available A random survey of 100 representative mosques in the U.S. was conducted to measure the correlation between Sharia adherence and dogma calling for violence against non-believers.  Of the 100 mosques surveyed, 51% had texts on site rated as severely advocating violence; 30% had texts rated as moderately advocating violence; and 19% had no violent texts at all.  Mosques that presented as Sharia adherent were more likely to feature violence-positive texts on site than were their non-Sharia-adherent counterparts.  In 84.5% of the mosques, the imam recommended studying violence-positive texts.  The leadership at Sharia-adherent mosques was more likely to recommend that a worshipper study violence-positive texts than leadership at non-Sharia-adherent mosques.  Fifty-eight percent of the mosques invited guest imams known to promote violent jihad.  The leadership of mosques that featured violence-positive literature was more likely to invite guest imams who were known to promote violent jihad than was the leadership of mosques that did not feature violence-positive literature on mosque premises.  

  10. Iron Chelation Adherence to Deferoxamine and Deferasirox in Thalassemia

    Science.gov (United States)

    Trachtenberg, Felicia; Vichinsky, Elliott; Haines, Dru; Pakbaz, Zahra; Mednick, Lauren; Sobota, Amy; Kwiatkowski, Janet; Thompson, Alexis A.; Porter, John; Coates, Thomas; Giardina, Patricia J.; Olivieri, Nancy; Yamashita, Robert; Neufeld, Ellis J.

    2015-01-01

    The Thalassemia Clinical Research Network collected adherence information from 79 patients on deferoxamine and 186 on deferasirox from 2007 to 2009. Chelation adherence was defined as percent of doses administered in the last 4 weeks (patient report) out of those prescribed (chart review). Chelation history since 2002 was available for 97 patients currently on deferoxamine and 217 on deferasirox, with crude estimates of adherence from chart review. Self-reported adherence to both deferoxamine and deferasirox were quite high, with slightly higher adherence to the oral chelator (97 vs. 92%). Ninety percent of patients on deferasirox reported at least 90% adherence, compared with 75% of patients on deferoxamine. Adherence to both chelators was highest in children, followed by adolescents and older adults. Predictors of lower deferoxamine adherence were smoking in the past year, problems sticking themselves (adults only), problems wearing their pump, and fewer transfusions in the past year. Predictors of lower deferasirox adherence were bodily pain and depression. Switching chelators resulted in increased adherence, regardless of the direction of the switch, although switching from deferoxamine to deferasirox was far more common. As adherence to deferoxamine is higher than previously reported, it appears beneficial for patients to have a choice in chelators. PMID:21523808

  11. Iron chelation adherence to deferoxamine and deferasirox in thalassemia.

    Science.gov (United States)

    Trachtenberg, Felicia; Vichinsky, Elliott; Haines, Dru; Pakbaz, Zahra; Mednick, Lauren; Sobota, Amy; Kwiatkowski, Janet; Thompson, Alexis A; Porter, John; Coates, Thomas; Giardina, Patricia J; Olivieri, Nancy; Yamashita, Robert; Neufeld, Ellis J

    2011-05-01

    The Thalassemia Clinical Research Network collected adherence information from 79 patients on deferoxamine and 186 on deferasirox from 2007 to 2009. Chelation adherence was defined as percent of doses administered in the last 4 weeks (patient report) out of those prescribed(chart review). Chelation history since 2002 was available for 97 patients currently on deferoxamine and 217 on deferasirox, with crude estimates of adherence from chart review. Self-reported adherence to both deferoxamine and deferasirox were quite high, with slightly higher adherence to the oral chelator (97 vs. 92%). Ninety percent of patients on deferasirox reported at least 90% adherence, compared with 75% of patients on deferoxamine. Adherence to both chelators was highest in children, followed by adolescents and older adults.Predictors of lower deferoxamine adherence were smoking in the past year, problems sticking themselves (adults only), problems wearing their pump, and fewer transfusions in the past year. Predictors of lower deferasirox adherence were bodily pain and depression. Switching chelators resulted in increased adherence, regardless of the direction of the switch, although switching from deferoxamine to deferasirox was far more common. As adherence to deferoxamine is higher than previously reported, it appears beneficial for patients to have a choice in chelators.

  12. Design and operation specifications of an active monitoring system for detecting southern resident killer whales

    Energy Technology Data Exchange (ETDEWEB)

    Deng, Zhiqun; Carlson, Thomas J.; Xu, Jinshan; Martinez, Jayson J.; Weiland, Mark A.; Mueller, Robert P.; Myers, Joshua R.; Jones, Mark E.

    2011-09-30

    Before final approval is given to the Snohomish County Public Utility District No. 1 for deploying the first tidal power devices in the United States in an open water environment, a system to manage the potential risk of injury to killer whales due to collision with moving turbine blades must be demonstrated. The Pacific Northwest National Laboratory (PNNL) is tasked with establishing the performance requirements for, constructing, and testing a prototype marine animal alert system for triggering temporary turbine shutdown when there is risk of collision with a killer whale. To develop a system that relies on active sonar two critical areas must be investigated - the target strength of killer whales and the frequency content of commercially available active sonar units. PNNL studied three target strength models: a simple model, the Fourier matching model, and the Kirchoff-ray mode model. Using target strength measurements of bottlenose dolphins obtained by previous researchers and assuming killer whales share similar morphology and structure, PNNL extrapolated the target strength of an adult killer whale 7.5 m in length at a frequency of 67 kHz. To study the frequency content of a commercially available sonar unit, direct measurements of the signal transmitted by the sonar were obtained by using a hydrophone connected to a data acquisition system in both laboratory and field conditions. The measurements revealed that in addition to the primary frequency of 200 kHz, there is a secondary frequency component at 90 kHz, which is within the hearing range of killer whales. The amplitude of the 90-kHz frequency component is above the hearing threshold of killer whales but below the threshold for potential injuries.

  13. Isolation and identification of a marine killer yeast strain YF07b and cloning of the gene encoding killer toxin from the yeast

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    It was found that the marine yeast strain YF07b could secrete a large amount of killer toxin against a pathogenic yeast strain WCY which could cause milky disease in Portunus trituberculatus. The marine yeast strain YF07b was identified to be Pichia anomala according to the results of routine yeast identification and 18S rDNA and ITS sequences. The gene encoding killer toxin in the marine yeast strain YF07b was amplified by PCR technology. After sequencing, the results show that an open reading frame, consisting of 1 281 bp, encoded a presumed protein of 427 amino acids. The sequence of the cloned gene was found to have 99% match with that of the gene encoding killer toxin in Pichia anomalas strain K. A signal peptide including 17 amino acids appeared in the N-terminal domain of the killer toxin. Therefore, the mature protein consisted of 410 amino acids, its molecular mass was estimated to be 47.4 ku and its isoelctronic point was 4.5.

  14. Natural killer cell biology: an update and future directions.

    Science.gov (United States)

    Campbell, Kerry S; Hasegawa, Jun

    2013-09-01

    Natural killer (NK) cells constitute a minor subset of normal lymphocytes that initiate innate immune responses toward tumor and virus-infected cells. They can mediate spontaneous cytotoxicity toward these abnormal cells and rapidly secrete numerous cytokines and chemokines to promote subsequent adaptive immune responses. Significant progress has been made in the past 2 decades to improve our understanding of NK cell biology. Here we review recent discoveries, including a better comprehension of the "education" of NK cells to achieve functional competence during their maturation and the discovery of "memory" responses by NK cells, suggesting that they might also contribute to adaptive immunity. The improved understanding of NK cell biology has forged greater awareness that these cells play integral early roles in immune responses. In addition, several promising clinical therapies have been used to exploit NK cell functions in treating patients with cancer. As our molecular understanding improves, these and future immunotherapies should continue to provide promising strategies to exploit the unique functions of NK cells to treat cancer, infections, and other pathologic conditions.

  15. Human natural killer cell development in secondary lymphoid tissues.

    Science.gov (United States)

    Freud, Aharon G; Yu, Jianhua; Caligiuri, Michael A

    2014-04-01

    For nearly a decade it has been appreciated that critical steps in human natural killer (NK) cell development likely occur outside of the bone marrow and potentially necessitate distinct microenvironments within extramedullary tissues. The latter include the liver and gravid uterus as well as secondary lymphoid tissues such as tonsils and lymph nodes. For as yet unknown reasons these tissues are naturally enriched with NK cell developmental intermediates (NKDI) that span a maturation continuum starting from an oligopotent CD34(+)CD45RA(+) hematopoietic precursor cell to a cytolytic mature NK cell. Indeed despite the detection of NKDI within the aforementioned tissues, relatively little is known about how, why, and when these tissues may be most suited to support NK cell maturation and how this process fits in with other components of the human immune system. With the discovery of other innate lymphoid subsets whose immunophenotypes overlap with those of NKDI, there is also need to revisit and potentially re-characterize the basic immunophenotypes of the stages of the human NK cell developmental pathway in vivo. In this review, we provide an overview of human NK cell development in secondary lymphoid tissues and discuss the many questions that remain to be answered in this exciting field.

  16. MicroRNA regulation of natural killer cells

    Directory of Open Access Journals (Sweden)

    Ryan eSullivan

    2013-02-01

    Full Text Available Natural Killer (NK cells are innate immune lymphocytes critical for host defense against viral infection and surveillance against malignant transformation. MicroRNAs (miRNAs are a family of small, non-coding RNAs that regulate a wide variety of cellular processes. Recent advances have highlighted the importance of miRNA-mediated post-transcriptional regulation in NK cell development, maturation, and function. This review focuses on several facets of this regulatory mechanism in NK cells: 1 the expressed NK cell miRNA transcriptome; 2 the impact of total miRNA deficiency on NK cells; 3 the role of specific miRNAs regulating NK cell development, survival, and maturation; 4 the intrinsic role of miRNAs regulating NK cell function, including cytokine production, proliferation, and cytotoxicity; and 5 the role of NK cell miRNAs in disease. Currently our knowledge of how miRNAs regulate NK cell biology is limited, and thus we also explore key open questions in the field, as well as approaches and techniques to ascertain the role of individual miRNAs as important molecular regulators.

  17. Natural killer cell immunotherapy: from bench to bedside

    Directory of Open Access Journals (Sweden)

    Anna eDomogala

    2015-06-01

    Full Text Available The potential of natural Killer (NK cells to target numerous malignancies in vitro has been well documented, however, only limited success has been seen in the clinic. Although NK cells prove non-toxic and safe regardless of the cell numbers injected, there is often little persistence and expansion observed in a patient which is vital for mounting an effective cellular response. NK cells can be isolated directly from peripheral blood (PB, umbilical cord blood (CB or bone marrow (BM, expanded in vitro using cytokines or differentiated in vitro from hematopoietic stem cells (HSC. Drugs that support NK cell function such as lenalidomide and bortezomib have also been studied in the clinic, however, the optimum combination, which can vary amongst different malignancies, is yet to be identified. NK cell proliferation, persistence and function can further be improved by various activation techniques such as priming and cytokine addition though whether stimulation pre or post injection is more favorable is another obstacle to be tackled. Here we review the various methods of obtaining and activating NK cells for use in the clinic whilst considering the ideal product and drug complement for the most successful cellular therapy.

  18. Molecular Programming of Immunological Memory in Natural Killer Cells.

    Science.gov (United States)

    Beaulieu, Aimee M; Madera, Sharline; Sun, Joseph C

    2015-01-01

    Immunological memory is a hallmark of the adaptive immune system. Although natural killer (NK) cells have traditionally been classified as a component of the innate immune system, they have recently been shown in mice and humans to exhibit certain features of immunological memory, including an ability to undergo a clonal-like expansion during virus infection, generate long-lived progeny (i.e. memory cells), and mediate recall responses against previously encountered pathogens--all characteristics previously ascribed only to adaptive immune responses by B and T cells in mammals. To date, the molecular events that govern the generation of NK cell memory are not completely understood. Using a mouse model of cytomegalovirus infection, we demonstrate that individual pro-inflammatory IL-12, IL-18, and type I-IFN signaling pathways are indispensible and play non-redundant roles in the generation of virus-specific NK cell memory. Furthermore, we discovered that antigen-specific proliferation and protection by NK cells is mediated by the transcription factor Zbtb32, which is induced by pro-inflammatory cytokines and promotes a cell cycle program in activated NK cells. A greater understanding of the molecular mechanisms controlling NK cell responses will provide novel strategies for tailoring vaccines to target infectious disease.

  19. Illuminating the dynamics of signal integration in Natural Killer cells

    Directory of Open Access Journals (Sweden)

    Sophie Victoria Pageon

    2012-10-01

    Full Text Available Natural Killer (NK cell responses are shaped by the integration of signals transduced from multiple activating and inhibitory receptors at their surface. Biochemical and genetic approaches have identified most of the key proteins involved in signal integration but a major challenge remains in understanding how the spatial and temporal dynamics of their interactions lead to NK cells responding appropriately when encountering ligands on target cells. Well over a decade of research using fluorescence microscopy has revealed much about the architecture of the NK cell immune synapse – the structured interface between NK cells and target cells - and how it varies when inhibition or activation is the outcome of signal integration. However, key questions – such as the proximity of individual activating and inhibitory receptors – have remained unanswered because the resolution of optical microscopy has been insufficient, being limited by diffraction. Recent developments in fluorescence microscopy have broken this limit, seeding new opportunities for studying the nanometre-scale organisation of the NK cell immune synapse. Here, we discuss how these new imaging technologies, including super-resolution imaging and other novel light-based methods, can illuminate our understanding of NK cell biology.

  20. Natural killer T cells in adipose tissue prevent insulin resistance.

    Science.gov (United States)

    Schipper, Henk S; Rakhshandehroo, Maryam; van de Graaf, Stan F J; Venken, Koen; Koppen, Arjen; Stienstra, Rinke; Prop, Serge; Meerding, Jenny; Hamers, Nicole; Besra, Gurdyal; Boon, Louis; Nieuwenhuis, Edward E S; Elewaut, Dirk; Prakken, Berent; Kersten, Sander; Boes, Marianne; Kalkhoven, Eric

    2012-09-01

    Lipid overload and adipocyte dysfunction are key to the development of insulin resistance and can be induced by a high-fat diet. CD1d-restricted invariant natural killer T (iNKT) cells have been proposed as mediators between lipid overload and insulin resistance, but recent studies found decreased iNKT cell numbers and marginal effects of iNKT cell depletion on insulin resistance under high-fat diet conditions. Here, we focused on the role of iNKT cells under normal conditions. We showed that iNKT cell-deficient mice on a low-fat diet, considered a normal diet for mice, displayed a distinctive insulin resistance phenotype without overt adipose tissue inflammation. Insulin resistance was characterized by adipocyte dysfunction, including adipocyte hypertrophy, increased leptin, and decreased adiponectin levels. The lack of liver abnormalities in CD1d-null mice together with the enrichment of CD1d-restricted iNKT cells in both mouse and human adipose tissue indicated a specific role for adipose tissue-resident iNKT cells in the development of insulin resistance. Strikingly, iNKT cell function was directly modulated by adipocytes, which acted as lipid antigen-presenting cells in a CD1d-mediated fashion. Based on these findings, we propose that, especially under low-fat diet conditions, adipose tissue-resident iNKT cells maintain healthy adipose tissue through direct interplay with adipocytes and prevent insulin resistance.

  1. Natural Killer Cells: Biology and Clinical Use in Cancer Therapy

    Institute of Scientific and Technical Information of China (English)

    WilliamH.D.Hallett; WilliamJ.Murphy

    2004-01-01

    Natural killer (NK) cells have the ability to mediate both bone marrow rejection and promote engraftment, as well as the ability to elicit potent anti-tumor effects. However the clinical results for these processes are still elusive. Greater understanding of NK cell biology, from activating and inhibitory receptor functions to the role of NK cells in allogeneic transplantation, needs to be appreciated in order to draw out the clinical potential of NK cells. Mechanisms of bone marrow cell (BMC) rejection are known to be dependant on inhibitory receptors specific for major histocompatibility complex (MHC) molecules and on activating receptors that have many potential ligands. The modulation of activating and inhibitory receptors may hold the key to clinical success involving NK cells. Pre-clinical studies in mice have shown that different combinations of activating and inhibitory receptors on NK cells can reduce graft-versus-host disease (GVHD), promote engraftment, and provide superior graft-versus-tumor (GVT) responses. Recent clinical data have shown that the use of KIR-ligand incompatibility produces tremendous graft-versus-leukemia effect in patients with acute myeloid leukemia at high risk of relapse. This review will attempt to be a synthesis of current knowledge concerning NK cells, their involvement in BMT, and their use as an immunotherapy for cancer and other hematologic malignancies. Cellular & Molecular Immunology. 2004;1(1):12-21.

  2. Natural Killer Cells: Biology and Clinical Use in Cancer Therapy

    Institute of Scientific and Technical Information of China (English)

    William H. D. Hallett; William J. Murphy

    2004-01-01

    Natural killer (NK) cells have the ability to mediate both bone marrow rejection and promote engraftment, as well as the ability to elicit potent anti-tumor effects. However the clinical results for these processes are still elusive. Greater understanding of NK cell biology, from activating and inhibitory receptor functions to the role of NK cells in allogeneic transplantation, needs to be appreciated in order to draw out the clinical potential of NK cells. Mechanisms of bone marrow cell (BMC) rejection are known to be dependant on inhibitory receptors specific for major histocompatibility complex (MHC) molecules and on activating receptors that have many potential ligands. The modulation of activating and inhibitory receptors may hold the key to clinical success involving NK cells. Pre-clinical studies in mice have shown that different combinations of activating and inhibitory receptors on NK cells can reduce graft-versus-host disease (GVHD), promote engraftment, and provide superior graft-versus-tumor (GVT) responses. Recent clinical data have shown that the use of KIR-ligand incompatibility produces tremendous graft-versus-leukemia effect in patients with acute myeloid leukemia at high risk of relapse. This review will attempt to be a synthesis of current knowledge concerning NK cells, their involvement in BMT, and their use as an immunotherapy for cancer and other hematologic malignancies. Cellular & Molecular Immunology. 2004;1(1):12-21.

  3. Public opinion and the politics of the killer robots debate

    Directory of Open Access Journals (Sweden)

    Michael C Horowitz

    2016-02-01

    Full Text Available The possibility that today’s drones could become tomorrow’s killer robots has attracted the attention of people around the world. Scientists and business leaders, from Stephen Hawking to Elon Musk, recently signed a letter urging the world to ban autonomous weapons. Part of the argument against these systems is that they violate the public conscience provision of the Martens Clause due to public opposition, making them illegal under international law. What, however, does the US public think of these systems? Existing research suggests widespread US public opposition, but focused on support for autonomous weapons in a vacuum. This paper uses two survey experiments to test the conditions in which public opposition rises and falls. The results demonstrate that public opposition to autonomous weapons is contextual. Fear of other countries or non-state actors developing these weapons makes the public significantly more supportive of developing them. The public also becomes much more willing to actually use autonomous weapons when their use would protect US forces. Beyond contributing to ongoing academic debates about casualty aversion, the microfoundations of foreign policy, and weapon systems, these results suggest the need for modesty when making claims about how the public views new, unknown technologies such as autonomous weapons.

  4. Advantages and Applications of CAR-Expressing Natural Killer Cells

    Directory of Open Access Journals (Sweden)

    Wolfgang eGlienke

    2015-02-01

    Full Text Available In contrast to donor T cells, natural killer (NK cells are known to mediate anti-cancer effects without the risk of inducing graft-versus-host disease (GvHD. In order to improve cytotoxicity against resistant cancer cells, auspicious efforts have been made with chimeric antigen receptor (CAR expressing T- and NK cells. These CAR-modified cells express antigen receptors against tumor-associated surface antigens, thus redirecting the effector cells and enhancing tumor-specific immunosurveillance. However, many cancer antigens are also expressed on healthy tissues, potentially leading to off tumor/ on target toxicity by CAR-engineered cells. In order to control such potentially severe side effects, the insertion of suicide genes into CAR-modified effectors can provide a means for efficient depletion of these cells. While CAR-expressing T cells have entered successfully clinical trials, experience with CAR-engineered NK cells is mainly restricted to pre-clinical investigations and predominantly to NK cell lines. In this review we summarize the data on CAR expressing NK cells focusing on the possible advantage using these short-lived effector cells and discuss the necessity of suicide switches. Furthermore, we address the compliance of such modified NK cells with regulatory requirements as a new field in cellular immunotherapy.

  5. CHILD KILLER WOMEN IN MYTHOLOGY: LILITH, LAMIA, MEDEA

    Directory of Open Access Journals (Sweden)

    Cemile AKYILDIZ ERCAN

    2013-04-01

    Full Text Available Myths have remained popular in every field of art since ancient times till today. Lilith, who is mentioned as the first wife of Adam in Sumerian mythology, revolts against patriarchal structure, but is labelled as child killer in following generations and thus punished by patriarchal culture. Frequently encountered in literary works, Lilith is regarded as the first woman who started the war between woman and men by the feminists. Lamia and Medea, the two mythological figures who share the some destiny with Lilith have also been accused of child killing and punished by the patriarchal society because of their revolt against patriarchal structure.It is examined in this study how the norms as imposed to women by the patriarchal structure and those who challenge these norms are shaped and how these are reflected onto myths. The traces of the revolt by Lilith, who is considered to be first women to start the gender conflict between men and women, are followed in the study of this myth. In addition, the figures of Lamia and Medea in Greek myths are mentioned as they are found in the myths and their truthfulness is explored. It is detected in the study that the position of women has not changed in much myths as in real life.

  6. THE KINETICS OF CYTOPLASMIC GRANULE SECRETION IN NATURAL KILLER CYTOTOXICITY

    Institute of Scientific and Technical Information of China (English)

    龚伊红; R.R.Hcrberman; C.W.Reynolds

    1994-01-01

    Antisexum against purified cytoplasmic granules from rat LGL tumor cells, and protein A-gold inmmnoelec-tron microscopy were used to study the secretory events in lysis of YAC-1 tumor cells by rat LGL tumor cells or by isolated LGL from normal rats. After 30 min incubation of effector and target cells together, gold-labeled cyto-plasmic granules were often seen concentrated in the area of the LGL adjacent to the ~ YAC-1 Within 60min,the grantees were observed to move to the cell border near the conjugazed site. At this point, fine granules were fused with file cell membrane, and subsequently released file gold-labeled contents into the junction between the LGL and the target cell. Gold particles could be seen at the B-T interface, on the surface,or sometimes on the target cell surface.These data provide direct evidence for the hypothesis that under conditions of active cytotoxicity,natural killer cells secrete their cytoplasmic granule contents leading to the deposition of granule material on the target cell surface and the eventual lysis of the cell.

  7. Antigen specificity of invariant natural killer T-cells

    Directory of Open Access Journals (Sweden)

    Alysia M. Birkholz

    2015-12-01

    Full Text Available Natural killer T-cells, with an invariant T-cell antigen receptor α-chain (iNKT cells, are unique and conserved subset of lymphocytes capable of altering the immune system through their rapid and potent cytokine responses. They are reactive to lipid antigens presented by the CD1d molecule, an antigen-presenting molecule that is not highly polymorphic. iNKT cell responses frequently involve mixtures of cytokines that work against each other, and therefore attempts are underway to develop synthetic antigens that elicit only strong interferon-gamma (IFNγ or only strong interleukin-4 responses but not both. Strong IFNγ responses may correlate with tighter binding to CD1d and prolonged stimulation of iNKT cells, and this may be useful for vaccine adjuvants and for stimulating anti-tumor responses. iNKT cells are self-reactive although the structure of the endogenous antigen is controversial. By contrast, bacterial and fungal lipids that engage the T-cell receptor and activate IFNγ from iNKT cells have been identified from both pathogenic and commensal organisms and the responses are in some cases highly protective from pathogens in mice. It is possible that the expanding knowledge of iNKT cell antigens and iNKT cell activation will provide the basis for therapies for patients suffering from infectious and immune diseases and cancer.

  8. Antigen specificity of invariant natural killer T-cells.

    Science.gov (United States)

    Birkholz, Alysia M; Kronenberg, Mitchell

    2015-12-01

    Natural killer T-cells, with an invariant T-cell antigen receptor α-chain (iNKT cells), are unique and conserved subset of lymphocytes capable of altering the immune system through their rapid and potent cytokine responses. They are reactive to lipid antigens presented by the CD1d molecule, an antigen-presenting molecule that is not highly polymorphic. iNKT cell responses frequently involve mixtures of cytokines that work against each other, and therefore attempts are underway to develop synthetic antigens that elicit only strong interferon-gamma (IFNγ) or only strong interleukin-4 responses but not both. Strong IFNγ responses may correlate with tighter binding to CD1d and prolonged stimulation of iNKT cells, and this may be useful for vaccine adjuvants and for stimulating anti-tumor responses. iNKT cells are self-reactive although the structure of the endogenous antigen is controversial. By contrast, bacterial and fungal lipids that engage the T-cell receptor and activate IFNγ from iNKT cells have been identified from both pathogenic and commensal organisms and the responses are in some cases highly protective from pathogens in mice. It is possible that the expanding knowledge of iNKT cell antigens and iNKT cell activation will provide the basis for therapies for patients suffering from infectious and immune diseases and cancer.

  9. Mechanism of human natural killer cell activation by Haemophilus ducreyi.

    Science.gov (United States)

    Li, Wei; Janowicz, Diane M; Fortney, Kate R; Katz, Barry P; Spinola, Stanley M

    2009-08-15

    The role of natural killer (NK) cells in the host response to Haemophilus ducreyi infection is unclear. In pustules obtained from infected human volunteers, there was an enrichment of CD56bright NK cells bearing the activation markers CD69 and HLA-DR, compared with peripheral blood. To study the mechanism by which H. ducreyi activated NK cells, we used peripheral blood mononuclear cells from uninfected volunteers. H. ducreyi activated NK cells only in the presence of antigen-presenting cells. H. ducreyi-infected monocytes and monocyte-derived macrophages activated NK cells in a contact- and interleukin-18 (IL-18)-dependent manner, whereas monocyte-derived dendritic cells induced NK activation through soluble IL-12. More lesional NK cells than peripheral blood NK cells produced IFN-gamma in response to IL-12 and IL-18. We conclude that NK cells are recruited to experimental lesions and likely are activated by infected macrophages and dendritic cells. IFN-gamma produced by lesional NK cells may facilitate phagocytosis of H. ducreyi.

  10. [SEX HORMONE INFLUENCE ON PERIPHERAL NATURAL KILLER CELLS COUNT].

    Science.gov (United States)

    Ivanov, P; Konova, E; Blajeva, Sv; Lukanov, Tsv; Angelova, P; Georgieva, V; Totev, V; Komsa-Penkova, R

    2015-01-01

    Proper evaluation of immunological factors connected with pregnancy establishment increased the possibility for exact treatment in high risk gestation cases. Hormonal changes during an ovarian cycle may affect immune response, which is crucial for the embryonic implantation. Peripheral Natural killer (pNK) cells are key components of immune systems and their activities could be regulated by sex hormones. In the present study we investigated the effects of estrogen fluctuation on the number of NK cells in vivo during the early follicular and middle luteal phase of menstrual cycle. In 63 healthy women with at least one full term pregnancy and regular menstrual cycle with duration between 24 and 32 days, blood samples have been collected twice for investigation of CD3/CD16/CD56 positive lymphocytes. The mean pNK count in follicular phase was 11.6% with 4.7% variation. The median was 10.6%. The mean pNK count in luteal phase was 12.1% with 5.1% variation, respectively median for cell number 11.8%. The two-tailed t-test comparison did not find any statistical difference despite the slight elevation of pNK cells count in luteal phase. The insignificant variation in pNK cells count objected the suggestion to evaluate immunological status in women with adverse pregnancy outcome in specific phase of menstrual cycle.

  11. Stimulation of Natural Killer T Cells by Glycolipids

    Directory of Open Access Journals (Sweden)

    Brian L. Anderson

    2013-12-01

    Full Text Available Natural killer T (NKT cells are a subset of T cells that recognize glycolipid antigens presented by the CD1d protein. The initial discovery of immunostimulatory glycolipids from a marine sponge and the T cells that respond to the compounds has led to extensive research by chemists and immunologists to understand how glycolipids are recognized, possible responses by NKT cells, and the structural features of glycolipids necessary for stimulatory activity. The presence of this cell type in humans and most mammals suggests that it plays critical roles in antigen recognition and the interface between innate and adaptive immunity. Both endogenous and exogenous natural antigens for NKT cells have been identified, and it is likely that glycolipid antigens remain to be discovered. Multiple series of structurally varied glycolipids have been synthesized and tested for stimulatory activity. The structural features of glycolipids necessary for NKT cell stimulation are moderately well understood, and designed compounds have proven to be much more potent antigens than their natural counterparts. Nevertheless, control over NKT cell responses by designed glycolipids has not been optimized, and further research will be required to fully reveal the therapeutic potential of this cell type.

  12. Pharmacy adherence measures to assess adherence to antiretroviral therapy: review of the literature and implications for treatment monitoring.

    Science.gov (United States)

    McMahon, James H; Jordan, Michael R; Kelley, Karen; Bertagnolio, Silvia; Hong, Steven Y; Wanke, Christine A; Lewin, Sharon R; Elliott, Julian H

    2011-02-15

    Prescription or pill-based methods for estimating adherence to antiretroviral therapy (ART), pharmacy adherence measures (PAMs), are objective estimates calculated from routinely collected pharmacy data. We conducted a literature review to evaluate PAMs, including their association with virological and other clinical outcomes, their efficacy compared with other adherence measures, and factors to consider when selecting a PAM to monitor adherence. PAMs were classified into 3 categories: medication possession ratio (MPR), pill count (PC), and pill pick-up (PPU). Data exist to recommend PAMs over self-reported adherence. PAMs consistently predicted patient outcomes, but additional studies are needed to determine the most predictive PAM parameters. Current evidence suggests that shorter duration of adherence assessment (≤ 6 months) and use of PAMs to predict future outcomes may be less accurate. PAMs which incorporate the number of days for which ART was prescribed without the counting of remnant pills, are reasonable minimum-resource methods to assess adherence to ART.

  13. Adherence to Mediterranean diet and bone health

    Directory of Open Access Journals (Sweden)

    Antonio Romero Pérez

    2014-05-01

    Full Text Available Introduction: Several studies have concluded that incidences of osteoporosis and osteoporosis-related fractures vary across the European Union, the lowest incidence being reported in the Mediterranean area. The beneficial effect is mainly attributed to a specific eating pattern. The Mediterranean diet contain a complex array of naturally occurring bioactive molecules with antioxidant, anti-inflammatory and alkalinising properties that may contribute to the bone-sparing effect of the Mediterranean diet. Objective: The purpose of this review is to examine the evidence to date on the effects of Mediterranean diet on bone health. Methods: The search for articles came from extensive research in the following databases: PubMed, Scopus and Web of Science. We used the search terms "Mediterranean diet", "adherence", "fruit and vegetable", "olive oil", "fish" "legume", "cereal" "alcohol", "bone", "osteoporosis", "fracture", and combinations, such as "Mediterranean diet and bone" or "Mediterranean diet and fracture". Results: A limited number of studies have examined the relationship between Mediterranean Diet and bone health, and they have reported conflicting results. On the one hand, adherence to a traditional MeDi has been associated with higher bone mineral density and lower fracture risk. The results of these studies could be attributed to the combined beneficial effects of individual components of the Mediterranean diet. On the contrary, several studies failed to show any association between adherence to the MeDi and indices of bone mass. Conclusions: Further large-scale studies are required to clarify the effect of Mediterranean diet on bone health, in order to establish the role of this diet in the prevention of osteoporosis.

  14. On World Religion Adherence Distribution Evolution

    Science.gov (United States)

    Ausloos, Marcel; Petroni, Filippo

    Religious adherence can be considered as a degree of freedom, in a statistical physics sense, for a human agent belonging to a population. The distribution, performance and life time of religions can thus be studied having in mind heterogeneous interacting agent modeling. We present a comprehensive analysis of 58 so-called religions (to be better defined in the main text) as measured through their number of adherents evolutions, between 1900 and 2000, - data taken from the World Christian Trends (Barrett and Johnson, "World Christian Trends AD 30 - AD 2200: Interpreting the Annual Christian Megacensus", William Carey Library, 2001): 40 are considered to be "presently growing" cases, including 11 turn overs in the twentieth century; 18 are "presently decaying", among which 12 are found to have had a recent maximum, in the nineteenth or the twentieth century. The Avrami-Kolmogorov differential equation which usually describes solid state transformations, like crystal growth, is used in each case in order to obtain the preferential attachment parameter introduced previously (Europhys Lett 77:38002, 2007). It is not often found close to unity, though often corresponding to a smooth evolution. However large values suggest the occurrence of extreme cases which we conjecture are controlled by so-called external fields. A few cases indicate the likeliness of a detachment process. We discuss a few growing and decaying religions, and illustrate various fits. Some cases seem to indicate the lack of reliability of the data, but others some marked departure from Avrami law. Whence the Avrami evolution equation might be surely improved, in particular, and somewhat obviously, for the decaying religion cases. We point out two major difficulties in such an analysis: (1) the "precise" original time of apparition of a religion, (2) the time at which there is a maximum number of adherents, both information being necessary for integrating reliably any evolution equation.

  15. Diferenciação de cepas de Candida albicans pelo sistema killer

    Directory of Open Access Journals (Sweden)

    Regina Celia Cândido

    1995-12-01

    Full Text Available Foi estudado o efeito killer de 9 cepas padrão de leveduras sobre 146 amostras de Candida albicans isoladas dos seguintes espécimes clínicos: mucosa bucal, fezes, lavado brônquico, escarro, secreção vaginal, urina, lesão de pele, lesão de unha e sangue. Usando este sistema foi possível diferenciar 23 biotipos de C. albicans. Os biotipos 211, 111 e 811 foram os mais freqüentemente isolados. A maioria das amostras de C. albicans (98,6% foi sensível a pelo menos uma ou mais das 9 cepas killer. Empregando- se este sistema foi possível demonstrar que 2 pacientes albergavam mesmo biotipo killer, respectivamente, 111 e 211, em diferentes espécimes clínicos, e em outro paciente, o mesmo biotipo (211 foi isolado de hemoculturas realizadas em ocasiões distintas. O uso do sistema killer para diferenciar os tipos entre as espécies de leveduras patogênicas, pode ser um método útil para estabelecer a eventual fonte de infecção, constituindo uma ajuda valiosa para o controle e vigilância de infecções nosocomiais causadas por leveduras.The authors studied the killer effect of nine standard strains of yeasts on 146 samples of Candida albicans isolated from the following clinical specimens: oral mucosa, feces, bronchial wash, sputum, vaginal secretion, urine, skin lesion, nail lesion and blood. Using this system it was possible to differentiate 23 biotypes of Candida albicans. The biotypes 211, 111 and 811 were most frequently isolated. Most of the samples of C. albicans (98.6% were sensitive to at least one or more of the nine killer strains. Using the killer system it was possible to show that two patients harbored the same killer biotypes, 111 and 211, respectively, in different clinical specimens and another patient harbored the same biotype (211 in blood cultures effected in different ocasions. The utilization of the killer system to differentiate types among species of pathogenic yeasts can be a useful method to stablish the eventual

  16. Community health workers adherence to referral guidelines

    DEFF Research Database (Denmark)

    Lal, Sham; Ndyomugenyi, Richard; Paintain, Lucy;

    2016-01-01

    Background Many malaria-endemic countries have implemented national community health worker (CHW) programmes to serve remote populations that have poor access to malaria diagnosis and treatment. Despite mounting evidence of CHWs’ ability to adhere to malaria rapid diagnostic tests (RDTs...... artemisinin-based combination therapy (ACT) and recognize symptoms in children that required immediate referral to the nearest health centre. Intervention arm CHWs had additional training on how to conduct an RDT; CHWs in the control arm used a presumptive diagnosis for malaria using clinical signs...

  17. Killer whale (Orcinus orca photo-identification in the eastern Canadian Arctic

    Directory of Open Access Journals (Sweden)

    Brent G. Young

    2011-05-01

    Full Text Available We identified individual killer whales (Orcinus orca using recent (2004–09 photographs to obtain a minimum count of whales that use eastern Canadian Arctic waters. Fifty-three individuals were identified from nine different sightings; 11 individuals from western Hudson Bay sightings and 42 from the areas around northern and eastern Baffin Island. One whale was re-sighted: an adult female or large juvenile photographed 17 days and 375 km apart at Churchill, Manitoba, and off-shore of Rankin Inlet, Nunavut, in August 2007. With only one individual re-sighted, the number of individuals that use this area is likely much larger. No re-sightings occurred between Arctic killer whales and individuals photographed off the coast of Newfoundland. Our results represent the minimum number of killer whales sighted in eastern Canadian Arctic waters and provide the foundation for further killer whale research. Little is known about Arctic killer whales and, as a top predator, it is unclear what effect they have on Arctic marine ecosystems.

  18. Comparison of echolocation clicks from geographically sympatric killer whales and long-finned pilot whales

    DEFF Research Database (Denmark)

    Eskesen, Ida; Wahlberg, Magnus; Simon, Malene

    2010-01-01

    The source characteristics of biosonar signals from sympatric killer whales and long-finned pilot whales in a Norwegian fjord were compared. A total of 137 pilot whale and more than 2000 killer whale echolocation clicks were recorded using a linear four-hydrophone array. Of these, 20 pilot whale...... clicks and 28 killer whale clicks were categorized as being recorded on-axis. The clicks of pilot whales had a mean apparent source level of 196 dB re 1 lPa pp and those of killer whales 203 dB re 1 lPa pp. The duration of pilot whale clicks was significantly shorter (23 ls, S.E.¼1.3) and the centroid...... frequency significantly higher (55 kHz, S.E.¼2.1) than killer whale clicks (duration: 41 ls, S.E.¼2.6; centroid frequency: 32 kHz, S.E.¼1.5). The rate of increase in the accumulated energy as a function of time also differed between clicks from the two species. The differences in duration, frequency...

  19. Importance of killer immunoglobulin-like receptors in allogeneic hematopoietic stem cell transplantation

    Directory of Open Access Journals (Sweden)

    Danilo Santana Alessio Franceschi

    2011-01-01

    Full Text Available Hematopoietic stem cell transplantation is the treatment of choice for many hematologic diseases, such as multiple myeloma, bone marrow aplasia and leukemia. Human leukocyte antigen (HLA compatibility is an important tool to prevent post-transplant complications such as graft rejection and graft-versus-host disease, but the high rates of relapse limit the survival of transplant patients. Natural Killer cells, a type of lymphocyte that is a key element in the defense against tumor cells, cells infected with viruses and intracellular microbes, have different receptors on their surfaces that regulate their cytotoxicity. Killer immunoglobulin-like receptors are the most important, interacting consistently with human leukocyte antigen class I molecules present in other cells and thus controlling the activation of natural killer cells. Several studies have shown that certain combinations of killer immunoglobulin-like receptors and human leukocyte antigens (in both donors and recipients can affect the chances of survival of transplant patients, particularly in relation to the graft-versusleukemia effect, which may be associated to decreased relapse rates in certain groups. This review aims to shed light on the mechanisms and effects of killer immunoglobulin-like receptors - human leukocyte antigen associations and their implications following hematopoietic stem cell transplantation, and to critically analyze the results obtained by the studies presented herein.

  20. The utilization of forensic science and criminal profiling for capturing serial killers.

    Science.gov (United States)

    White, John H; Lester, David; Gentile, Matthew; Rosenbleeth, Juliana

    2011-06-15

    Movies and nightly television shows appear to emphasize highly efficient regimens in forensic science and criminal investigative analysis (profiling) that result in capturing serial killers and other perpetrators of homicide. Although some of the shows are apocryphal and unrealistic, they reflect major advancements that have been made in the fields of forensic science and criminal psychology during the past two decades that have helped police capture serial killers. Some of the advancements are outlined in this paper. In a study of 200 serial killers, we examined the variables that led to police focusing their attention on specific suspects. We developed 12 categories that describe how serial killers come to the attention of the police. The results of the present study indicate that most serial killers are captured as a result of citizens and surviving victims contributing information that resulted in police investigations that led to an arrest. The role of forensic science appears to be important in convicting the perpetrator, but not necessarily in identifying the perpetrator.

  1. Adherence to antiretroviral therapy among people living with HIV

    Directory of Open Access Journals (Sweden)

    Basavaprabhu Achappa

    2013-01-01

    Full Text Available Background: Acquired immune deficiency syndrome (AIDS is now considered as a manageable chronic illness. There has been a dramatic reduction in human immunodeficiency virus (HIV related morbidity and mortality due to antiretroviral therapy. A high level of adherence (>95% is required for antiretroviral therapy to be effective. There are many barriers to adherence in both developed and developing countries. Aim: The aim of our study was to determine adherence levels and factors influencing adherence to antiretroviral therapy among people living with HIV. Materials and Methods: Using a cross-sectional study design, 116 HIV positive patients receiving antiretroviral therapy for at least 1 year were interviewed using a semi structured questionnaire. The collected data was analyzed using Statistical Product and Service Solutions (SPSS version 11.5. Chi-square test was done. A P value of < 0.05 was considered statistically significant. Results: Of 116 participants, 63.7% reported adherence ≥ 95%. Mean adherence index was 91.25%. Financial constraints, forgetting to take medication, lack of family care, depression, alcohol use, social stigma and side effects to antiretroviral therapy were barriers for adherence in our study. Conclusion: Adherence to antiretroviral therapy in south India is suboptimal. Intensive adherence counseling should be provided to all patients before initiation ofantiretroviral therapy. Health care providers must identify possible barriers to adherence at the earliest and provide appropriate solutions.

  2. Patient adherence to medical treatment: a review of reviews

    Directory of Open Access Journals (Sweden)

    Heerdink Rob

    2007-04-01

    Full Text Available Abstract Background Patients' non-adherence to medical treatment remains a persistent problem. Many interventions to improve patient adherence are unsuccessful and sound theoretical foundations are lacking. Innovations in theory and practice are badly needed. A new and promising way could be to review the existing reviews of adherence to interventions and identify the underlying theories for effective interventions. That is the aim of our study. Methods The study is a review of 38 systematic reviews of the effectiveness of adherence interventions published between 1990 and 2005. Electronic literature searches were conducted in Medline, Psychinfo, Embase and the Cochrane Library. Explicit inclusion and exclusion criteria were applied. The scope of the study is patient adherence to medical treatment in the cure and care sector. Results Significant differences in the effectiveness of adherence interventions were found in 23 of the 38 systematic reviews. Effective interventions were found in each of four theoretical approaches to adherence interventions: technical, behavioural, educational and multi-faceted or complex interventions. Technical solutions, such as a simplification of the regimen, were often found to be effective, although that does not count for every therapeutic regimen. Overall, our results show that, firstly, there are effective adherence interventions without an explicit theoretical explanation of the operating mechanisms, for example technical solutions. Secondly, there are effective adherence interventions, which clearly stem from the behavioural theories, for example incentives and reminders. Thirdly, there are other theoretical models that seem plausible for explaining non-adherence, but not very effective in improving adherence behaviour. Fourthly, effective components within promising theories could not be identified because of the complexity of many adherence interventions and the lack of studies that explicitly compare

  3. A Case of Mature Natural Killer-Cell Neoplasm Manifesting Multiple Choroidal Lesions: Primary Intraocular Natural Killer-Cell Lymphoma

    Directory of Open Access Journals (Sweden)

    Yoshiaki Tagawa

    2015-11-01

    Full Text Available Purpose: Natural killer (NK cell neoplasm is a rare disease that follows an acute course and has a poor prognosis. It usually emerges from the nose and appears in the ocular tissue as a metastasis. Herein, we describe a case of NK-cell neoplasm in which the eye was considered to be the primary organ. Case: A 50-year-old female displayed bilateral anterior chamber cells, vitreous opacity, bullous retinal detachment, and multiple white choroidal mass lesions. Although malignant lymphoma or metastatic tumor was suspected, various systemic examinations failed to detect any positive results. A vitrectomy was performed OS; however, histocytological analyses from the vitreous sample showed no definite evidence of malignancy, and IL-10 concentration was low. Enlarged choroidal masses were fused together. Three weeks after the first visit, the patient suddenly developed an attack of fever, night sweat, and hepatic dysfunction, and 5 days later, she passed away due to multiple organ failure. Immunohistochemisty and in situ hybridization revealed the presence of atypical cells positive for CD3, CD56, and Epstein-Barr virus-encoded RNAs, resulting in the diagnosis of NK-cell neoplasm. With the characteristic clinical course, we concluded that this neoplasm was a primary intraocular NK-cell lymphoma. Conclusions: This is the first report to describe primary intraocular NK-cell neoplasm. When we encounter atypical choroidal lesions, we should consider the possibility of NK-cell lymphoma, even though it is a rare disease.

  4. A Case of Mature Natural Killer-Cell Neoplasm Manifesting Multiple Choroidal Lesions: Primary Intraocular Natural Killer-Cell Lymphoma

    Science.gov (United States)

    Tagawa, Yoshiaki; Namba, Kenichi; Ogasawara, Reiki; Kanno, Hiromi; Ishida, Susumu

    2015-01-01

    Purpose Natural killer (NK) cell neoplasm is a rare disease that follows an acute course and has a poor prognosis. It usually emerges from the nose and appears in the ocular tissue as a metastasis. Herein, we describe a case of NK-cell neoplasm in which the eye was considered to be the primary organ. Case A 50-year-old female displayed bilateral anterior chamber cells, vitreous opacity, bullous retinal detachment, and multiple white choroidal mass lesions. Although malignant lymphoma or metastatic tumor was suspected, various systemic examinations failed to detect any positive results. A vitrectomy was performed OS; however, histocytological analyses from the vitreous sample showed no definite evidence of malignancy, and IL-10 concentration was low. Enlarged choroidal masses were fused together. Three weeks after the first visit, the patient suddenly developed an attack of fever, night sweat, and hepatic dysfunction, and 5 days later, she passed away due to multiple organ failure. Immunohistochemisty and in situ hybridization revealed the presence of atypical cells positive for CD3, CD56, and Epstein-Barr virus-encoded RNAs, resulting in the diagnosis of NK-cell neoplasm. With the characteristic clinical course, we concluded that this neoplasm was a primary intraocular NK-cell lymphoma. Conclusions This is the first report to describe primary intraocular NK-cell neoplasm. When we encounter atypical choroidal lesions, we should consider the possibility of NK-cell lymphoma, even though it is a rare disease. PMID:26668579

  5. Using communication skills to improve adherence in children with chronic disease : The adherence equation

    NARCIS (Netherlands)

    Brand, Paul L. P.; Klok, Ted; Kaptein, Adrian A.

    2013-01-01

    Nonadherence to maintenance medication is common in paediatric chronic conditions. Despite the common belief that nonadherence is therapy-resistant, and the apparent lack of evidence for successful interventions to improve adherence, there is, in fact, a considerable body of evidence suggesting that

  6. Accurate reporting of adherence to inhaled therapies in adults with cystic fibrosis: methods to calculate normative adherence

    Directory of Open Access Journals (Sweden)

    Hoo ZH

    2016-05-01

    Full Text Available Zhe Hui Hoo,1,2 Rachael Curley,1,2 Michael J Campbell,1 Stephen J Walters,1 Daniel Hind,3 Martin J Wildman1,2 1School of Health and Related Research (ScHARR, University of Sheffield, 2Sheffield Adult Cystic Fibrosis Centre, Northern General Hospital, 3Sheffield Clinical Trials Research Unit, University of Sheffield, Sheffield, UK Background: Preventative inhaled treatments in cystic fibrosis will only be effective in maintaining lung health if used appropriately. An accurate adherence index should therefore reflect treatment effectiveness, but the standard method of reporting adherence, that is, as a percentage of the agreed regimen between clinicians and people with cystic fibrosis, does not account for the appropriateness of the treatment regimen. We describe two different indices of inhaled therapy adherence for adults with cystic fibrosis which take into account effectiveness, that is, “simple” and “sophisticated” normative adherence. Methods to calculate normative adherence: Denominator adjustment involves fixing a minimum appropriate value based on the recommended therapy given a person’s characteristics. For simple normative adherence, the denominator is determined by the person’s Pseudomonas status. For sophisticated normative adherence, the denominator is determined by the person’s Pseudomonas status and history of pulmonary exacerbations over the previous year. Numerator adjustment involves capping the daily maximum inhaled therapy use at 100% so that medication overuse does not artificially inflate the adherence level. Three illustrative cases: Case A is an example of inhaled therapy under prescription based on Pseudomonas status resulting in lower simple normative adherence compared to unadjusted adherence. Case B is an example of inhaled therapy under-prescription based on previous exacerbation history resulting in lower sophisticated normative adherence compared to unadjusted adherence and simple normative adherence

  7. Statistical Dynamics of Religions and Adherents

    CERN Document Server

    Ausloos, M; Ausloos, Marcel; Petroni, Filippo

    2006-01-01

    Religiosity is one of the most important sociological aspects of populations. All religions may evolve in their beliefs and adapt to the society developments. A religion is a social variable, like a language or wealth, to be studied like any other organizational parameter. Several questions can be raised, as considered in this study: e.g. (i) from a ``macroscopic'' point of view : How many religions exist at a given time? (ii) from a ``microscopic'' view point: How many adherents belong to one religion? Does the number of adherents increase or not, and how? No need to say that if quantitative answers and mathematical laws are found, agent based models can be imagined to describe such non-equilibrium processes. It is found that empirical laws can be deduced and related to preferential attachment processes, like on evolving network; we propose two different algorithmic models reproducing as well the data. Moreover, a population growth-death equation is shown to be a plausible modeling of evolution dynamics in a...

  8. Automated microinjection system for adherent cells

    Science.gov (United States)

    Youoku, Sachihiro; Suto, Yoshinori; Ando, Moritoshi; Ito, Akio

    2007-07-01

    We have developed an automated microinjection system that can handle more than 500 cells an hour. Microinjection injects foreign agents directly into cells using a micro-capillary. It can randomly introduce agents such as DNA, proteins and drugs into various types of cells. However, conventional methods require a skilled operator and suffer from low throughput. The new automated microinjection techniques we have developed consist of a Petri dish height measuring method and a capillary apex position measuring method. The dish surface height is measured by analyzing the images of cells that adhere to the dish surface. The contrast between the cell images is minimized when the focus plane of an object lens coincides with the dish surface. We have developed an optimized focus searching method with a height accuracy of +/-0.2 um. The capillary apex position detection method consists of three steps: rough, middle, and precise. These steps are employed sequentially to cover capillary displacements of up to +/-2 mm, and to ultimately accomplish an alignment accuracy of less than one micron. Experimental results using this system we developed show that it can introduce fluorescent material (Alexa488) into adherent cells, HEK293, with a success rate of 88.5%.

  9. Statistical dynamics of religions and adherents

    Science.gov (United States)

    Ausloos, M.; Petroni, F.

    2007-02-01

    Religiosity is one of the most important sociological aspects of populations. All religions may evolve in their beliefs and adapt to the society developments. A religion is a social variable, like a language or wealth, to be studied like any other organizational parameter. Several questions can be raised, as considered in this study; e.g.: i) From a "macroscopic" point of view: How many religions exist at a given time? ii) From a "microscopic" viewpoint: How many adherents belong to one religion? Does the number of adherents increase or not, and how? No need to say that if quantitative answers and mathematical laws are found, agent-based models can be imagined to describe such non-equilibrium processes. It is found that empirical laws can be deduced and related to preferential attachment processes, like on an evolving network; we propose two different algorithmic models reproducing as well the data. Moreover, a population growth-death equation is shown to be a plausible modeling of evolution dynamics in a continuous-time framework. Differences with language dynamic competition are emphasized.

  10. 75 FR 17377 - Endangered and Threatened Species; Initiation of 5-Year Review for Southern Resident Killer Whales

    Science.gov (United States)

    2010-04-06

    ... of 5-Year Review for Southern Resident Killer Whales AGENCY: National Marine Fisheries Service (NMFS... whales (Orcinus orca) under the Endangered Species Act of 1973, as amended (ESA). A 5-year review is a..., we are requesting submission of any such information on Southern Resident killer whales that...

  11. Side effects, adherence self-efficacy, and adherence to antiretroviral treatment: a mediation analysis in a Chinese sample.

    Science.gov (United States)

    Zhang, Liying; Li, Xiaoming; Lin, Zhenping; Jacques-Tiura, Angela J; Xu, Jinping; Zhou, Yuejiao; Qiao, Shan; Shen, Zhiyong; Stanton, Bonita

    2016-07-01

    Antiretroviral therapy (ART) is a lifelong treatment. To date, ART adherence is suboptimal for most patients in resource-poor settings. Previous research indicates that medication side effects are perceived to be a significant barrier of high ART adherence. Data regarding the role of adherence self-efficacy in mediating the relationship between side effects from ART and adherence to ART are limited; thus, this study examines this potential mediational role of self-efficacy. A cross-sectional survey of 2987 people living with HIV aged ≥18 years was conducted in 2012-2013 in Guangxi Autonomous Region (Guangxi) which has one of the fastest-growing HIV rates in China. Of the total sample, 2146 (72.1%) participants had initiated ART. Participants reported the number of days of completing the daily dose of ART in the past month; adherence was defined as completing the daily dose at least 28 days in the last month (≥90%). Side effects were significantly negatively related to adherence to ART. Mediation analyses indicated that adherence self-efficacy significantly mediated the side effects-adherence relationship. Future interventions to increase adherence self-efficacy and effective coping with side effects among HIV patients are needed in order to improve their ART adherence.

  12. Stability of adherence to highly active antiretroviral therapy over time among clients enrolled in the treatment adherence demonstration project.

    Science.gov (United States)

    Tesoriero, James; French, Tyler; Weiss, Linda; Waters, Mark; Finkelstein, Ruth; Agins, Bruce

    2003-08-01

    Adherence to antiretroviral medications is essential to therapeutic success. Many published studies have investigated the degree of adherence or nonadherence, but sample sizes have generally been small, and adherence has seldom been viewed as a longitudinal process. This paper investigates the stability of adherence over time among HIV-infected individuals attending adherence support programs in New York State. The study cohort consists of 435 clients who were on HAART at baseline and who completed at least 2 follow-up interviews. Although cross-sectional nonadherence did not exceed 35%, nonadherence reached 54% when considered across all 3 interviews. Analysis of transition matricies revealed moderate stability in adherence over time (e.g., first follow-up adherence was 81.0% for clients adherent at baseline, compared with 58.3% for clients nonadherent at baseline). Second-order transition matricies offered additional predictive utility. Multivariate results indicated that, for some, it was the transition from a desirable to an undesirable state (e.g., from no illicit drug use to illicit drug use) that increased the likelihood of nonadherence, rather than the presence of these characteristics over time. Findings illustrate the importance of multiple, periodic assessments of adherence and the need to consider strategies to increase stability in the factors affecting adherence to HAART.

  13. [e-Health interventions and improvement in treatment adherence].

    Science.gov (United States)

    Sieben, Angelien; Bredie, S J H Bas; van Laarhoven, C J H M Kees; Schoonhoven, Lisette; Burger, David M; van Onzenoort, Hein A W

    2014-01-01

    Poor adherence to medication is one of the most important determinants in the treatment of patients with chronic disorders. e-Health-based interventions may be able to improve treatment adherence. This article gives an overview of the available e-Health interventions and the extent to which they can improve adherence. We searched in the PubMed, Cinahl, PsycInfo, and Embase databases for e-Health interventions that aimed at improving adherence to treatment. Of the 16 included studies, 15 used a website and one used an app. Ten studies showed a significant improvement in treatment adherence by using the intervention. e-Health interventions were generally complex. Simple interventions were the most successful in improving treatment adherence.

  14. Measuring insulin adherence among adults with type 2 diabetes.

    Science.gov (United States)

    Osborn, Chandra Y; Gonzalez, Jeffery S

    2016-08-01

    Non-adherence to insulin is common and associated with suboptimal health. We adapted the Morisky Medication Adherence Scale to specify insulin adherence (MIAS) and compared it to the Adherence to Refills and Medication Scale for Diabetes (ARMS-D) and the Summary of Diabetes Self-Care Activities medications subscale (SDSCA-MS) and an insulin-specific (SDSCA-IS) version. A sample of 144 insulin-treated adults (58 % African American/Black, 34 % Caucasian/White, 8 % Other/Mixed race; 6.9 % Hispanic) completed these measures along with a HbA1C test. The internal consistency and factor structure of the MIAS were adequate; 59 % of participants forgot to take insulin and 46 % reported non-adherence. The MIAS was associated with the ARMS-D, SDSCA-MS, and SDSCA-IS (p insulin adherence assessment tool for practice and research applications.

  15. Complete mitochondrial genome phylogeographic analysis of killer whales (Orcinus orca) indicates multiple species

    DEFF Research Database (Denmark)

    Morin, Phillip A; Archer, Frederick I.; Foote, Andrew David

    2010-01-01

    Killer whales (Orcinus orca) currently comprise a single, cosmopolitan species with a diverse diet. However, studies over the last 30 yr have revealed populations of sympatric "ecotypes" with discrete prey preferences, morphology, and behaviors. Although these ecotypes avoid social interactions...... and are not known to interbreed, genetic studies to date have found extremely low levels of diversity in the mitochondrial control region, and few clear phylogeographic patterns worldwide. This low level of diversity is likely due to low mitochondrial mutation rates that are common to cetaceans. Using killer whales...... as a case study, we have developed a method to readily sequence, assemble, and analyze complete mitochondrial genomes from large numbers of samples to more accurately assess phylogeography and estimate divergence times. This represents an important tool for wildlife management, not only for killer whales...

  16. Serial killers with military experience: applying learning theory to serial murder.

    Science.gov (United States)

    Castle, Tammy; Hensley, Christopher

    2002-08-01

    Scholars have endeavored to study the motivation and causality behind serial murder by researching biological, psychological, and sociological variables. Some of these studies have provided support for the relationship between these variables and serial murder. However, the study of serial murder continues to be an exploratory rather than explanatory research topic. This article examines the possible link between serial killers and military service. Citing previous research using social learning theory for the study of murder, this article explores how potential serial killers learn to reinforce violence, aggression, and murder in military boot camps. As with other variables considered in serial killer research, military experience alone cannot account for all cases of serial murder. Future research should continue to examine this possible link.

  17. Paths to destruction: the lives and crimes of two serial killers.

    Science.gov (United States)

    Wolf, Barbara C; Lavezzi, Wendy A

    2007-01-01

    Although research into the phenomenon of serial murder has revealed that serial killers frequently do not fit the initially described paradigm in terms of their physical and psychological profiles, backgrounds, and motives to kill, the media continues to sensationalize the figures of such killers and the investigators who attempt to analyze them on the basis of aspects of their crimes. Although the so-called "typical" profile of the serial murderer has proven accurate in some instances, in many other cases the demographics and behaviors of these killers have deviated widely from the generalized assumptions. This report details two unusual cases in which five and eight murders were committed in upstate New York. The lives and crimes of these offenders illustrate the wide spectrum of variations in the backgrounds, demographics, motivations, and actions witnessed among serial murderers, and highlight the limitations and dangers of profiling based on generalities.

  18. Dyson Dots & Geoengineering: The Killer App Ad Astra

    Science.gov (United States)

    Kennedy, R. G.; Hughes, Eric; Roy, Kenneth I.; Fields, David E.

    No study of coping with climate change is complete without considering geoengineering. A "Dyson Dot" is one or more large (area ~700 K km2, >200 megatonne) lightsail(s) in a radiation-levitated non-Keplerian orbit(s) just sunward of the Sun-Earth Lagrange-1 point. The purpose of this syncretic concept is twofold: (I) As a parasol, it would reduce insolation on Earth by at least one-quarter of a percent (-3.4 W m-2), same as what caused 1.5°C drop during the "Little Ice Age" (~1550-1850) and same as the IPCC Third Report's mid-range value for global warming by 2050. The parasol transforms the "solar constant" to a controlled solar variable. (II) Hosting a ~50K km2 photovoltaic power station on its sunny side and relaying beamed power via maser to rectennas on a circumpolar Dymaxion grid, the system could displace over 300 EJ/a (~100 trillion kWh/yr) of fossil-fired power (total global demand for electricity forecast by 2050), while providing USD trillions in revenue from cheap clean energy sales (@1-3¢/kWh) to amortize the scheme. Total system efficiency compares favorably to automobiles; total system power density is comparable to nuclear power. This approach -- self-funding, "pay-as-you-go", minimally intrusive, scalable, complementary with a portfolio of other measures and above all reversible is not precluded by international treaty. Indeed geoengineering may be the best "killer app" to bootstrap orbital industry and humanity ad astra, because the terawattscale product is comparable to the power required for interstellar travel. If Tellurian spacefaring civilization bootstraps its exponential growth with multi-terawatt maser beams from such lightsails, there might eventually be enough of them to have a detectable effect on Sol's apparent luminosity at certain wavelengths, as seen from far away, similar to the eponymous Dyson Sphere, hence the moniker.

  19. Emotional stability, anxiety, and natural killer activity under examination stress.

    Science.gov (United States)

    Borella, P; Bargellini, A; Rovesti, S; Pinelli, M; Vivoli, R; Solfrini, V; Vivoli, G

    1999-08-01

    This study was performed to evaluate the relation between a stable personality trait, a mood state and immune response to an examination stress. A self-reported measure of emotional stability (BFQ-ES scale) was obtained in a sample (n = 39) randomly selected from 277 cadets; this personality trait was also investigated by completing a neuroticism scale (Eysenck personality inventory) and a trait-anxiety scale (STAI). Natural killer (NK) cell activity was measured at baseline, long before the examination time and the examination day. The state-anxiety scale evaluated the response to the stressful stimulus. Taking subjects all together, the academic task did not result in significant modification over baseline in NK cell activity. Subjects were then divided into three groups based on emotional stability and state-anxiety scores: high emotional stability/low anxiety, medium, and low emotional stability/high anxiety. Examination stress induced significant increases in NK cell activity in the high emotional stability/low anxiety group, no effect in the medium group, and significant decreases in the low emotional stability/high anxiety group. The repeated-measure ANOVA revealed a significant interaction of group x period (baseline vs. examination) for both lytic units and percent cytolysis. The results did not change after introducing coffee and smoking habits as covariates. Our findings suggest that the state-anxiety acts in concert with a stable personality trait to modulate NK response in healthy subjects exposed to a psychological naturalistic stress. The relation between anxiety and poor immune control has been already described, whereas the ability of emotional stability to associate with an immunoenhancement has not yet reported. The peculiarity of our population, a very homogeneous and healthy group for life style and habits, can have highlighted the role of emotional stability, and may account for the difference with other studies.

  20. In vitro Natural Killer cell immunotherapy for medulloblastoma

    Directory of Open Access Journals (Sweden)

    Lucia eFernandez

    2013-04-01

    Full Text Available How the immune system attacks medulloblastoma (MB tumours effectively is unclear, although natural killer (NK cells play an important role in immune defence against tumour cells. Interactions between receptors on NK cells and ligands expressed by tumour cells are critical for tumour control by immunotherapy. In this study, we analysed tumour samples from 54 MB patients for expression of major histocompatibility complex class I-related chains A (MICA and UL16 binding protein (ULPB-2, which are ligands for the NK group 2 member D activatory receptor (NKG2D. The percentage of MICA and ULBP-2 positive cells was higher than 25% in 68% and 6% of MB patients, respectively. A moderate-high intensity of MICA cytoplasmic staining was observed in 46% MB patients and weak ULBP-2 staining was observed in 8% MB patients. No correlation between MICA/ULBP-2 expression and patient outcome was found. We observed that HTB-186, a medulloblastoma cell line, was moderately resistant to NK cell cytotoxicity in vitro. Blocking MICA/ULBP-2 on HTB-186, and NKG2D receptor on NK cells increased resistance to NK cell lysis in vitro. However, HLA class I blocking on HTB-186 and overnight incubation with IL-15 stimulated NK cells efficiently to kill tumour cells in vitro. We conclude that although NKG2D/MICA-ULBP-2 interactions have a role in NK cell cytotoxicity against MB, high expression of HLA class I can protect MB from NK cell cytotoxicity. Even so, our in vitro data indicate that if NK cells are appropriately stimulated, they may have the potential to target MB in vivo.

  1. Acquisition of enhanced natural killer cell activity under anesthesia.

    Science.gov (United States)

    Hsueh, C M; Lorden, J F; Hiramoto, R N; Ghanta, V K

    1992-01-01

    An increase in natural killer (NK) cell activity can be conditioned with a one trial learning paradigm to demonstrate the interaction between the central nervous system (CNS) and the immune system. In order to demonstrate learning possibilities during 'non-conscious' state, mice were anesthetized with a ketamin/rompun mixture and underwent one trial learning with odor cue as the conditioned stimulus (CS) preceding the unconditioned stimulus (US). The results indicated that mice that were exposed to camphor odor cue under the influence of anesthesia can associate the signal with the poly I:C unconditioned stimulus and were able to recall the conditioned response upon reexposure to the CS. Secondly, the conditioned association made in a conscious state can be recalled by exposure to the same olfactory odor cue in a 'non-conscious' state. The increase in the conditioned change in NK cell activity of both situations was significantly higher than the control group. The results demonstrate that learning can take place and the learned response can be recalled under the reduced awareness caused by anesthesia. The findings we report are unusual and novel in that they demonstrate that the CNS can learn new associations under conditions where the host is apparently unaware of the signals being linked. Anesthesia combined with the long interstimulus interval indicates that certain neuronal pathways in the CNS are receptive to second signals (elicited by the US) even when the second signal is separated by one day. This means the conditioned learning of a physiological response can take place unconsciously at a separate level and under situations where the host is totally unaware of the events which the brain is processing and linking as incoming information.

  2. Polyfunctionality of natural killer cell in healthy donors

    Directory of Open Access Journals (Sweden)

    Yupanun WUTTI-IN

    2016-04-01

    Full Text Available Background: Natural killer (NK cells are important guards of the innate immune system, which act by performing as primary effector cells in viral infections. NK cell function is regulated by the engagement of activating and/or inhibitory receptors on individual NK cell surfaces. Subsequent to activation, the release of preformed cytolytic granules or cytokines occurs. Recently, the polyfunctionality of NK cells has been described as a potent NK cell subset that mediates antiviral response in HIV-infected slow progressors. Objectives: To evaluate the polyfunctional NK cells in healthy individuals. Methods: Peripheral blood mononuclear cells (PBMCs were separated from 41 healthy blood donors by Ficoll-Hypaque gradient centrifugation. Multicolor flow cytometry was used to investigate the expression of function markers (degranulation marker (CD107a, IFN-γ, and TNF-a on NK cells following PMA/Ionomycin or K562 stimulation. Results: The percentage of NK cells expressing CD107a, IFN-γ, or TNF-a in response to PMA/Ionomycin were 17.85, 10.56, and 2.66 %, respectively. The NK cells expressing CD107a, IFN-γ, or TNF-a in response to K562 stimulation were 6.43, 2.09, and 0.57 %, respectively. The capability of NK cells to perform polyfunctions was 6.19 % of the total NK cells following PMA/Ionomycin stimulation, while 1.06 % was observed following K562 stimulation. The trifunctional CD107a+ / IFN-γ+ / TNF-a + NK cell subset was found to be 0.95 and 0.04 % following PMA/Ionomycin and K562 stimulation, respectively. Conclusion: A small fraction of NK cells was capable of performing polyfunctions following stimulation, with less than 1 % being able to perform trifunctions in this study setting.

  3. Are natural killer cells protecting the metabolically healthy obese patient?

    LENUS (Irish Health Repository)

    Lynch, Lydia A

    2012-02-01

    With the emerging obesity pandemic, identifying those who appear to be protected from adverse consequences such as type 2 diabetes and certain malignancies will become important. We propose that the circulating immune system plays a role in the development of these comorbidities. Clinical data and blood samples were collected from 52 patients with severe obesity attending a hospital weight-management clinic and 11 lean healthy controls. Patients were classified into metabolically "healthy obese" (n = 26; mean age 42.6 years, mean BMI 46.8 kg\\/m(2)) or "unhealthy obese" (n = 26; mean age 45 years, mean BMI 47.5 kg\\/m(2)) groups, based upon standard cutoff points for blood pressure, lipid profile, and fasting glucose. Circulating lymphoid populations and phenotypes were assessed by flow cytometry. Obese patients had significantly less circulating natural killer (NK) and cytotoxic T lymphocytes (CTL) compared to lean controls. There were significantly higher levels of NK cells and CTLs in the healthy obese group compared to the unhealthy obese group (NK: 11.7% vs. 6.5%, P < 0.0001, CD8 13.4% vs. 9.3%, P = 0.04), independent of age and BMI and these NK cells were also less activated in the healthy compared to the unhealthy group (CD69, 4.1% vs. 11.8%, P = 0.03). This is the first time that quantitative differences in the circulating immune system of obese patients with similar BMI but different metabolic profiles have been described. The significantly higher levels of CTLs and NK cells, which express fewer inhibitory molecules, could protect against malignancy, infection, and metabolic disease seen in obesity.

  4. Granule-Dependent Natural Killer Cell Cytotoxicity to Fungal Pathogens

    Science.gov (United States)

    Ogbomo, Henry; Mody, Christopher H.

    2017-01-01

    Natural killer (NK) cells kill or inhibit the growth of a number of fungi including Cryptococcus, Candida, Aspergillus, Rhizopus, and Paracoccidioides. Although many fungi are not dangerous, invasive fungal pathogens, such as Cryptococcus neoformans, cause life-threatening disease in individuals with impaired cell-mediated immunity. While there are similarities to cell-mediated killing of tumor cells, there are also important differences. Similar to tumor killing, NK cells directly kill fungi in a receptor-mediated and cytotoxic granule-dependent manner. Unlike tumor cell killing where multiple NK cell-activating receptors cooperate and signal events that mediate cytotoxicity, only the NKp30 receptor has been described to mediate signaling events that trigger the NK cell to mobilize its cytolytic payload to the site of interaction with C. neoformans and Candida albicans, subsequently leading to granule exocytosis and fungal killing. More recently, the NKp46 receptor was reported to bind Candida glabrata adhesins Epa1, 6, and 7 and directly mediate fungal clearance. A number of unanswered questions remain. For example, is only one NK cell-activating receptor sufficient for signaling leading to fungal killing? Are the signaling pathways activated by fungi similar to those activated by tumor cells during NK cell killing? How do the cytolytic granules traffic to the site of interaction with fungi, and how does this process compare with tumor killing? Recent insights into receptor use, intracellular signaling and cytolytic granule trafficking during NK cell-mediated fungal killing will be compared to tumor killing, and the implications for therapeutic approaches will be discussed. PMID:28123389

  5. What strategies do ulcerative colitis patients employ to facilitate adherence?

    Science.gov (United States)

    Kawakami, Aki; Tanaka, Makoto; Naganuma, Makoto; Maeda, Shin; Kunisaki, Reiko; Yamamoto-Mitani, Noriko

    2017-01-01

    Background Overall, 30%–45% of patients with ulcerative colitis (UC) are non-adherent and have difficulties taking their medications; this non-adherence increases the risk of clinical relapse 1.4- to 5.5-fold. This study aimed to clarify the strategies patients employ to facilitate adherence and determine whether the strategies had an impact on good adherence. Methods This was a cross-sectional survey using a self-administered questionnaire and review of medical records. Patients diagnosed as having UC and attending one of the outpatient clinics of four urban hospitals from June 2009 to December 2012 were enrolled. A questionnaire was developed to identify the strategies patients employ to facilitate adherence and then administered to patients with UC. Adherence to 5-aminosalicylic acid was calculated, and univariate and multiple logistic regression analyses were performed to determine the strategies that were associated with good adherence. Results The final analyses included 671 participants (mean age 40.2 years; 54.3% males). The valid response rate was 96.9%; 186 (27.7%) participants were classified as non-adherent, the mean adherence rate being 86.1% (standard deviation [SD] 17.9). Seven strategies that patients employ to facilitate adherence were identified, the following two being significantly associated with good adherence: “I keep my medicines where I eat meals” and “I keep each day’s medicine in a pill case or something similar to make sure I have taken them”. Conclusion The identified strategies might be used to develop a program to improve medication adherence in patients with UC. PMID:28203059

  6. Concern between medication non-adherence and diabetes associated depression

    OpenAIRE

    Krishnan Vengadaragava Chary; Porchelvan Swaminathan

    2016-01-01

    Background: Diabetes mellitus is one of the health disorders that acquire mankind immensely. An ominous twin of diabetes mellitus is diabetes associated depression which is often unrecognised in routine diabetic care. The objective of this study was to find the prevalence and correlation between medication adherence and diabetes associated depression. Methods: It is a conducted as cross sectional study using Morisky medication adherence scale to evaluate treatment adherence of type II diab...

  7. Killer whale depredation and associated costs to Alaskan sablefish, Pacific halibut and Greenland turbot longliners.

    Directory of Open Access Journals (Sweden)

    Megan J Peterson

    Full Text Available Killer whale (Orcinus orca depredation (whales stealing or damaging fish caught on fishing gear adversely impacts demersal longline fisheries for sablefish (Anoplopoma fimbria, Pacific halibut (Hippoglossus stenolepis and Greenland turbot (Reinhardtius hippoglossoides in the Bering Sea, Aleutian Islands and Western Gulf of Alaska. These interactions increase direct costs and opportunity costs associated with catching fish and reduce the profitability of longline fishing in western Alaska. This study synthesizes National Marine Fisheries Service observer data, National Marine Fisheries Service sablefish longline survey and fishermen-collected depredation data to: 1 estimate the frequency of killer whale depredation on longline fisheries in Alaska; 2 estimate depredation-related catch per unit effort reductions; and 3 assess direct costs and opportunity costs incurred by longliners in western Alaska as a result of killer whale interactions. The percentage of commercial fishery sets affected by killer whales was highest in the Bering Sea fisheries for: sablefish (21.4%, Greenland turbot (9.9%, and Pacific halibut (6.9%. Average catch per unit effort reductions on depredated sets ranged from 35.1-69.3% for the observed longline fleet in all three management areas from 1998-2012 (p<0.001. To compensate for depredation, fishermen set additional gear to catch the same amount of fish, and this increased fuel costs by an additional 82% per depredated set (average $433 additional fuel per depredated set. In a separate analysis with six longline vessels in 2011 and 2012, killer whale depredation avoidance measures resulted in an average additional cost of $494 per depredated vessel-day for fuel and crew food. Opportunity costs of time lost by fishermen averaged $522 per additional vessel-day on the grounds. This assessment of killer whale depredation costs represents the most extensive economic evaluation of this issue in Alaska to date and will help

  8. The role of family caregivers in HIV medication adherence.

    Science.gov (United States)

    Beals, K P; Wight, R G; Aneshensel, C S; Murphy, D A; Miller-Martinez, D

    2006-08-01

    This study examines the role that mid-life and older wives and mothers play in promoting medication adherence among their HIV-infected husbands or adult sons who require daily living assistance. Interviews were conducted with 112 caregiving dyads, with caregivers reporting on their own behaviours and attitudes towards medications, and care-recipients (persons living with HIV [PLH]) providing information about their own adherence practices. By examining how caregiver characteristics, behaviours, and attitudes may influence PLH adherence it is explicitly recognized that caregivers and PLH are linked within a caregiving dyad. Findings indicate that caregivers often remind PLH to take medications, but these reminders are not significantly associated with adherence. Caregivers also report strong attitudes about medication hassles, concerns over treatment failure and general concerns about adherence. Controlling for background characteristics, high perceived adherence hassles on the part of the caregiver were associated with low PLH adherence, providing evidence of shared influence within the caregiving dyad. Adherence interventions may maximize their effectiveness if they consider the role of the family caregiver because these data suggest that caregiver attitudes are linked with PLH adherence behaviours.

  9. Factors influencing adherence among older people with osteoarthritis.

    Science.gov (United States)

    Loew, Laurianne; Brosseau, Lucie; Kenny, Glen P; Durand-Bush, Natalie; Poitras, Stéphane; De Angelis, Gino; Wells, George A

    2016-09-01

    This study aims to identify potential factors that could affect adherence and influence the implementation of an evidence-based structured walking program, among older adults diagnosed with knee osteoarthritis. A total of 69 participants with mild to moderate osteoarthritis of the knee fulfilled an online survey on potential factors that could affect their adherence to an evidence-based structured walking program. Adherence with regard to the influencing factors was explored using a logistic regression model. Results tend to show higher odds of adhering to the evidence-based walking program if the participants were supervised (more than 2.9 times as high), supported by family/friends (more than 3.7 times as high), and not influenced by emotional involvement (more than 11 times as high). The odds of adhering were 3.6 times lower for participants who indicated a change in their medication intake and 3.1 times lower for individuals who considered themselves as less physically active (95 % confidence interval (CI)). Our exploratory findings identified and defined potential adherence factors that could guide health professionals in their practice to better identify positive influences and obstacles to treatment adherence, which would lead to the adoption of a more patient-centered approach. A large-scale study is required to clearly delineate the key factors that would influence adherence. We addressed a new knowledge gap by identifying the main strategies to promote the long-term adherence of community-based walking program.

  10. The effect of reminder systems on patients' adherence to treatment

    Directory of Open Access Journals (Sweden)

    Fenerty SD

    2012-02-01

    Full Text Available Sarah D Fenerty1, Cameron West1, Scott A Davis1, Sebastian G Kaplan3, Steven R Feldman1,2,41Center for Dermatology Research, Department of Dermatology, 2Department of Pathology, 3Department of Psychiatry and Behavioral Medicine, 4Department of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USABackground: Patient adherence is an important component of the treatment of chronic disease. An understanding of patient adherence and its modulating factors is necessary to correctly interpret treatment efficacy and barriers to therapeutic success.Purpose: This meta-analysis aims to systematically review published randomized controlled trials of reminder interventions to assist patient adherence to prescribed medications.Methods: A Medline search was performed for randomized controlled trials published between 1968 and June 2011, which studied the effect of reminder-based interventions on adherence to self-administered daily medications.Results: Eleven published randomized controlled trials were found between 1999 and 2009 which measured adherence to a daily medication in a group receiving reminder interventions compared to controls receiving no reminders. Medication adherence was measured as the number of doses taken compared to the number prescribed within a set period of time. Meta-analysis showed a statistically significant increase in adherence in groups receiving a reminder intervention compared to controls (66.61% versus 54.71%, 95% CI for mean: 0.8% to 22.4%. Self-reported and electronically monitored adherence rates did not significantly differ (68.04% versus 63.67%, P = 1.0. Eight of eleven studies showed a statistically significant increase in adherence for at least one of the reminder group arms compared to the control groups receiving no reminder intervention.Limitations: The data are limited by imperfect measures of adherence due to variability in data collection methods. It is also likely

  11. Impact of prescription size on statin adherence and cholesterol levels

    Directory of Open Access Journals (Sweden)

    Mehler Phillip S

    2007-10-01

    Full Text Available Abstract Background Therapy with 3-Hydroxy-3-methylglutaryl Co-enzyme A reductase inhibitors (statins improve outcomes in a broad spectrum of patients with hyperlipidemia. However, effective therapy requires ongoing medication adherence; restrictive pharmacy policies may represent a barrier to successful adherence, particularly among vulnerable patients. In this study we sought to assess the relationship between the quantity of statin dispensed by the pharmacy with patient adherence and total cholesterol. Methods We analyzed a cohort of 3,386 patients receiving more than one fill of statin medications through an integrated, inner-city health care system between January 1, 2000 and December 31, 2002. Our measure of adherence was days of drug acquisition divided by days in the study for each patient, with adequate adherence defined as ≥ 80%. Log-binomial regression was used to determine the relative risk of various factors, including prescription size, on adherence. We also assessed the relationship between adherence and total cholesterol using multiple linear regression. Results After controlling for age, gender, race, co-payment, comorbidities, and insurance status, patients who obtained a majority of fills as 60-day supply compared with 30-day supply were more likely to be adherent to their statin medications (RR 1.41, 95% CI 1.28–1.55, P Conclusion In a healthcare system serving predominantly indigent patients, the provision of a greater quantity of statin medication at each prescription fill contributes to improved adherence and greater drug effectiveness.

  12. Salmonella Newport omphaloarteritis in a stranded killer whale (Orcinus orca) neonate.

    Science.gov (United States)

    Colegrove, Kathleen M; St Leger, Judy A; Raverty, Stephen; Jang, Spencer; Berman-Kowalewski, Michelle; Gaydos, Joseph K

    2010-10-01

    Salmonella enterica serovar Newport (Salmonella Newport) was isolated from multiple tissues in a neonate killer whale (Orcinus orca) that stranded dead in 2005 along the central coast of California, USA. Necrotizing omphaloarteritis and omphalophlebitis was observed on histologic examination suggesting umbilical infection was the route of entry. Genetic analysis of skin samples indicated that the neonate had an offshore haplotype. Salmonellosis has rarely been identified in free-ranging marine mammals and the significance of Salmonella Newport infection to the health of free-ranging killer whales is currently unknown.

  13. Out of the Pacific and back again: the matrilineal history of Pacific killer whale ecotypes

    DEFF Research Database (Denmark)

    Foote, Andrew David; Morin, PA; JW, Durban;

    2011-01-01

    Killer whales (Orcinus orca) are the most widely distributed marine mammals and have radiated to occupy a range of ecological niches. Disparate sympatric types are found in the North Atlantic, Antarctic and North Pacific oceans, however, little is known about the underlying mechanisms driving...... reconstructions and a clinal decrease in diversity suggest a North Pacific to North Atlantic founding event, and the later return of killer whales to the North Pacific. Therefore, ecological divergence could have occurred during the allopatric phase through drift or selection and/or may have either commenced...

  14. Purification of Candida guilliermondii and Pichia ohmeri killer toxin as an active agent against Penicillium expansum.

    Science.gov (United States)

    Coelho, Alexandre Rodrigo; Tachi, Masahico; Pagnocca, Fernando Carlos; Nobrega, Gisele Maria Andrade; Hoffmann, Fernando Leite; Harada, Ken-Ichi; Hirooka, Elisa Yoko

    2009-01-01

    An antifungal assay with cell-free culture supernatant of Pichia ohmeri 158 and Candida guilliermondii P3 was tested against Penicillium expansum strain #2 at 25 degrees C by measuring hyphal length and percentage conidia germination. C. guilliermondii was more effective against P. expansum conidia germination (58.15% inhibition), while P. ohmeri showed higher inhibition of mycelial growth (66.17%), indicating a probable mechanism associated with killer activity. This killer toxin (molecular mass expansum:% inhibition rose from 42.16 to 90.93% (C. guilliermondii) and 39.32 to 91.12% (P. ohmeri) (p Penicillium activity.

  15. Tuberculosis treatment adherence and fatality in Spain

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    Vidal Rafael

    2009-12-01

    Full Text Available Abstract Background The adherence to long tuberculosis (TB treatment is a key factor in TB control programs. Always some patients abandon the treatment or die. The objective of this study is to identify factors associated with defaulting from or dying during antituberculosis treatment. Methods Prospective study of a large cohort of TB cases diagnosed during 2006-2007 by 61 members of the Spanish Society of Pneumology and Thoracic Surgery (SEPAR. Predictive factors of completion outcome (cured plus completed treatment vs. defaulters plus lost to follow-up and fatality (died vs. the rest of patients were based on logistic regression, calculating odds ratios (OR and 95% confidence intervals (CI. Results Of the 1490 patients included, 29.7% were foreign-born. The treatment outcomes were: cured 792 (53.2%, completed treatment 540 (36.2%, failure 2 (0.1%, transfer-out 33 (2.2%, default 27 (1.8%, death 27 (1.8%, lost to follow-up 65 (4.4%, other 4 (0.3%. Completion outcome reached 93.5% and poor adherence was associated with: being an immigrant (OR = 2.03; CI:1.06-3.88, living alone (OR = 2.35; CI:1.05-5.26, residents of confined institutions (OR = 4.79; CI:1.74-13.14, previous treatment (OR = 2.93; CI:1.44-5.98, being an injecting drug user (IDU (OR = 9.51; CI:2.70-33.47 and treatment comprehension difficulties (OR = 2.93; CI:1.44-5.98. Case fatality was 1.8% and it was associated with the following variables: age 50 or over (OR = 10.88; CI:1.12-105.01, retired (OR = 12.26;CI:1.74-86.04, HIV-infected (OR = 9.93; CI:1.48-66.34, comprehension difficulties (OR = 4.07; CI:1.24-13.29, IDU (OR = 23.59; CI:2.46-225.99 and Directly Observed Therapy (DOT (OR = 3.54; CI:1.07-11.77. Conclusion Immigrants, those living alone, residents of confined institutions, patients treated previously, those with treatment comprehension difficulties, and IDU patients have poor adherence and should be targeted for DOT. To reduce fatality rates, stricter monitoring is required

  16. Monkeypox virus infection of rhesus macaques induces massive expansion of natural killer cells but suppresses natural killer cell functions.

    Directory of Open Access Journals (Sweden)

    Haifeng Song

    Full Text Available Natural killer (NK cells play critical roles in innate immunity and in bridging innate and adaptive immune responses against viral infection. However, the response of NK cells to monkeypox virus (MPXV infection is not well characterized. In this intravenous challenge study of MPXV infection in rhesus macaques (Macaca mulatta, we analyzed blood and lymph node NK cell changes in absolute cell numbers, cell proliferation, chemokine receptor expression, and cellular functions. Our results showed that the absolute number of total NK cells in the blood increased in response to MPXV infection at a magnitude of 23-fold, manifested by increases in CD56+, CD16+, CD16-CD56- double negative, and CD16+CD56+ double positive NK cell subsets. Similarly, the frequency and NK cell numbers in the lymph nodes also largely increased with the total NK cell number increasing 46.1-fold. NK cells both in the blood and lymph nodes massively proliferated in response to MPXV infection as measured by Ki67 expression. Chemokine receptor analysis revealed reduced expression of CXCR3, CCR7, and CCR6 on NK cells at early time points (days 2 and 4 after virus inoculation, followed by an increased expression of CXCR3 and CCR5 at later time points (days 7-8 of infection. In addition, MPXV infection impaired NK cell degranulation and ablated secretion of interferon-γ and tumor necrosis factor-α. Our data suggest a dynamic model by which NK cells respond to MPXV infection of rhesus macaques. Upon virus infection, NK cells proliferated robustly, resulting in massive increases in NK cell numbers. However, the migrating capacity of NK cells to tissues at early time points might be reduced, and the functions of cytotoxicity and cytokine secretion were largely compromised. Collectively, the data may explain, at least partially, the pathogenesis of MPXV infection in rhesus macaques.

  17. Adherence to COPD guidelines in general practice

    DEFF Research Database (Denmark)

    Ulrik, Charlotte Suppli; Sørensen, Tina Brandt; Højmark, Torben Brunse

    2013-01-01

    BACKGROUND: The general practitioner (GP) is often the first healthcare contact for patients with chronic obstructive pulmonary disease (COPD). AIMS: To determine whether participating in a standardised educational programme delivered in the GP's own practice is associated with adherence to COPD...... guidelines. METHODS: A nationwide register-based observational before and after study was undertaken with a control group of propensity-matched practices (follow-up period 6 months). COPD was defined as age 40+ years and at least two prescriptions for inhaled medication. The educational programme consisted...... were used to compare the rate of spirometry testing, preventive consultations, and influenza vaccinations provided to COPD patients and the rate of spirometry testing in non-COPD individuals, assumed to reflect diagnostic activity. RESULTS: Data for 102 participating GP practices were analysed...

  18. Sister Carrie, an Adherent of Desires

    Institute of Scientific and Technical Information of China (English)

    裴水妹

    2007-01-01

    Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.

  19. Associations between patients' adherence and GPs' attitudes towards risk, statin therapy and management of non-adherence

    DEFF Research Database (Denmark)

    Barfoed, Benedicte L; Paulsen, Maja S; Christensen, Palle M;

    2016-01-01

    BACKGROUND: Previous studies suggest that doctors' personal lifestyle, risk taking personality and beliefs about risk reducing therapies may affect their clinical decision-making. Whether such factors are further associated with patients' adherence with medication is largely unknown. OBJECTIVE......: To estimate associations between GPs' attitudes towards risk, statin therapy and management of non-adherence and their patients' adherence, and to identify subgroups of GPs with poor patient adherence. METHODS: All Danish GPs were invited to participate in an online survey. We asked whether they regarded...

  20. Modelling imperfect adherence to HIV induction therapy

    Directory of Open Access Journals (Sweden)

    Smith? Robert J

    2010-01-01

    Full Text Available Abstract Background Induction-maintenance therapy is a treatment regime where patients are prescribed an intense course of treatment for a short period of time (the induction phase, followed by a simplified long-term regimen (maintenance. Since induction therapy has a significantly higher chance of pill fatigue than maintenance therapy, patients might take drug holidays during this period. Without guidance, patients who choose to stop therapy will each be making individual decisions, with no scientific basis. Methods We use mathematical modelling to investigate the effect of imperfect adherence during the inductive phase. We address the following research questions: 1. Can we theoretically determine the maximal length of a possible drug holiday and the minimal number of doses that must subsequently be taken while still avoiding resistance? 2. How many drug holidays can be taken during the induction phase? Results For a 180 day therapeutic program, a patient can take several drug holidays, but then has to follow each drug holiday with a strict, but fairly straightforward, drug-taking regimen. Since the results are dependent upon the drug regimen, we calculated the length and number of drug holidays for all fifteen protease-sparing triple-drug cocktails that have been approved by the US Food and Drug Administration. Conclusions Induction therapy with partial adherence is tolerable, but the outcome depends on the drug cocktail. Our theoretical predictions are in line with recent results from pilot studies of short-cycle treatment interruption strategies and may be useful in guiding the design of future clinical trials.

  1. Treatment adherence in multiple sclerosis: a survey of Belgian neurologists

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    Decoo D

    2015-11-01

    Full Text Available Danny Decoo,1 Mathieu Vokaer2 1Department of Neurology and Neurorehab, AZ Alma, Sijsele, Belgium; 2Multiple Sclerosis Clinic, Edith Cavell Hospital, CHIREC group, Brussels, Belgium Background: Poor treatment adherence is common among patients with multiple sclerosis (MS. This survey evaluated neurologists’ perception of treatment adherence among MS patients.Materials and methods: This questionnaire-based survey of Belgian neurologists treating MS patients was conducted between June and July 2014. Face-to-face interviews with the neurologists were based on a semistructured questionnaire containing questions regarding the perception of the treatment-adherence level.Results: A total of 41 neurologists participated in the survey. Of these, 88% indicated frequent discussions about treatment adherence as beneficial for treatment efficacy. The mean time spent on the treatment-adherence discussion during the initial consultation was 11 minutes, with 24% of doctors spending 5 minutes and 24% of doctors spending 10 minutes discussing this issue. The majority of neurologists (56% perceived the adherence level in MS as good, and 12% perceived it as excellent. The majority of neurologists (64% indicated intolerance as a main cause of poor adherence, and all neurologists reported insufficient efficacy as a consequence of nonadherence. The importance of adherence in the neurologists’ practice was evaluated on a scale of 1–10, with 1= “not very important” and 10= “very important”: 44% of doctors indicated a score of 10, and the mean score was 9.0.Conclusion: Belgian neurologists consider treatment adherence in MS as essential for the benefits of therapies. However, although neurologists are aware of the consequences of nonadherence, they generally spend limited time discussing the importance of treatment adherence with their patients. Keywords: multiple sclerosis, treatment adherence, physician survey

  2. Non-adherence to topical treatments for actinic keratosis

    Science.gov (United States)

    Shergill, Bav; Zokaie, Simon; Carr, Alison J

    2014-01-01

    Background There is limited information on the patterns of use, adherence rates, and factors that impact adherence with topical treatments for actinic keratosis (AK). Objectives To establish patterns of use and adherence with topical treatments for AK and to identify treatment-related factors that impact on adherence. Methods A community-based, cross-sectional study was performed using a standardized questionnaire completed online or via telephone interview. Patients were stratified according to the presence of AK lesions on the scalp and/or other extremities; and presence of scarring resulting from treatment. Results This study included 305 patients with AK who were currently using a patient-applied topical therapy for AK or had used one within the previous 12 months. In total, 88% (n = 268/305) of patients were either non-adherent, non-persistent or both non-adherent and non-persistent to topical therapy. Duration of treatment was associated with increasing rates of non-adherence (adjusted odds ratio [OR]; for treatment durations greater than 4 weeks, 2.2, P < 0.01): 52% of patients were non-adherent with 3–4 week treatment duration; 69% of patients with 4–8 week treatment duration; and 71% of patients with 6–12 week treatment duration. There were similar increases in non-persistence with increasing treatment duration (adjusted OR; for treatment durations greater than 4 weeks, 2.1, P < 0.05). Conclusion This study found high rates of non-adherence and non-persistence in patients with AK. Duration of treatment was a significant factor contributing to non-adherence and non-persistence to topical treatments. Patient-applied topical therapies that require less frequent application and have shorter treatment duration may be associated with improved adherence rates. PMID:24379656

  3. Social Support and the Mediating Roles of Alcohol Use and Adherence Self-Efficacy on Antiretroviral Therapy (ART) Adherence Among ART Recipients in Gauteng, South Africa.

    Science.gov (United States)

    Kekwaletswe, Connie T; Jordaan, Esmé; Nkosi, Sebenzile; Morojele, Neo K

    2016-11-11

    We sought to (a) replicate and (b) extend (via the addition of alcohol use) Cha et al.'s cross-sectional multi-component model of ART adherence on the relationship between social support, depression, self-efficacy beliefs, and antiretroviral therapy (ART) adherence, among HIV patients in Tshwane, South Africa. Using purposive sampling, 304 male and female ART recipients were recruited. ART adherence was assessed using three manifest indicators: total adherence ratio, the CASE adherence index and 1-month adherence measure. Data were analysed using structural equation modeling. In our replicated model, social support had both direct and indirect relationships with ART adherence, and inclusion of alcohol use improved prediction of ART adherence. Direct and indirect effects of alcohol use on ART adherence emerged: adherence self-efficacy beliefs partially mediated the latter path. Findings highlight the importance of integrating into ART promotion interventions, the reduction of alcohol use, provision of social support, and enhancement of adherence self-efficacy beliefs.

  4. Pinpointing differences in cisplatin-induced apoptosis in adherent and non-adherent cancer cells

    DEFF Research Database (Denmark)

    Tastesen, Hanne Sørup; Holm, Jacob Bak; Poulsen, Kristian Arild

    2010-01-01

    Platinum compounds are used in the treatment of cancer. We demonstrate that cisplatin-induced (10 µM) apoptosis (caspase-3 activity) is pronounced within 18 hours in non-adherent Ehrlich ascites tumour cells (EATC), whereas there is no increase in caspase-3 activity in the adherent Ehrlich Lettré...... ascites tumour cells (ELA). Loss of KCl and cell shrinkage are hallmarks in apoptosis and has been shown in EATC. However, we find no reduction in cell volume and only a minor loss of K(+) which is accompanied by net uptake of Na(+) following 18 hours cisplatin exposure in ELA. Glutathione and taurine...... have previously been demonstrated to protect cells from apoptosis. We find, however, that increase or decrease in the cellular content of glutathione and taurine has no effect on cisplatin-induced cell death in EATC and ELA. Nevertheless, knock-down of the taurine transporter TauT leads...

  5. Recognition of microbial glycolipids by Natural Killer T cells

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    Dirk Michael Zajonc

    2015-08-01

    Full Text Available T cells can recognize microbial antigens when presented by dedicated antigen-presenting molecules. While peptides are presented by classical members of the Major Histocompatibility (MHC family (MHC I and II, lipids, glycolipids and lipopeptides can be presented by the non-classical MHC member CD1. The best studied subset of lipid-reactive T cells are Type I Natural killer T (iNKT cells that recognize a variety of different antigens when presented by the non-classical MHCI homolog CD1d. iNKT cells have been shown to be important for the protection against various microbial pathogens, including B. burgdorferi the causative agents of Lyme disease and S. pneumoniae, which causes pneumococcal meningitis and community-acquired pneumonia. Both pathogens carry microbial glycolipids that can trigger the T cell antigen receptor (TCR, leading to iNKT cell activation. iNKT cells have an evolutionary conserved TCR alpha chain, yet retain the ability to recognize structurally diverse glycolipids. They do so using a conserved recognition mode, in which the TCR enforces a conserved binding orientation on CD1d. TCR binding is accompanied by structural changes within the TCR binding site of CD1d, as well as the glycolipid antigen itself. In addition to direct recognition of microbial antigens, iNKT cells can also be activated by a combination of cytokines (IL-12/IL-18 and TCR stimulation. Many microbes carry TLR antigens and microbial infections can lead to TLR activation. The subsequent cytokine response in turn lower the threshold of TCR mediated iNKT cell activation, especially when weak microbial or even self-antigens are presented during the cause of the infection. In summary, iNKT cells can be directly activated through TCR triggering of strong antigens, while cytokines produced by the innate immune response may be necessary for TCR triggering and iNKT cell activation in the presence of weak antigens. Here we will review the molecular basis of iNKT cell

  6. Recognition of Microbial Glycolipids by Natural Killer T Cells

    Science.gov (United States)

    Zajonc, Dirk M.; Girardi, Enrico

    2015-01-01

    T cells can recognize microbial antigens when presented by dedicated antigen-presenting molecules. While peptides are presented by classical members of the major histocompatibility complex (MHC) family (MHC I and II), lipids, glycolipids, and lipopeptides can be presented by the non-classical MHC member, CD1. The best studied subset of lipid-reactive T cells are type I natural killer T (iNKT) cells that recognize a variety of different antigens when presented by the non-classical MHCI homolog CD1d. iNKT cells have been shown to be important for the protection against various microbial pathogens, including B. burgdorferi, the causative agents of Lyme disease, and S. pneumoniae, which causes pneumococcal meningitis and community-acquired pneumonia. Both pathogens carry microbial glycolipids that can trigger the T cell antigen receptor (TCR), leading to iNKT cell activation. iNKT cells have an evolutionary conserved TCR alpha chain, yet retain the ability to recognize structurally diverse glycolipids. They do so using a conserved recognition mode, in which the TCR enforces a conserved binding orientation on CD1d. TCR binding is accompanied by structural changes within the TCR binding site of CD1d, as well as the glycolipid antigen itself. In addition to direct recognition of microbial antigens, iNKT cells can also be activated by a combination of cytokines (IL-12/IL-18) and TCR stimulation. Many microbes carry TLR antigens, and microbial infections can lead to TLR activation. The subsequent cytokine response in turn lower the threshold of TCR-mediated iNKT cell activation, especially when weak microbial or even self-antigens are presented during the cause of the infection. In summary, iNKT cells can be directly activated through TCR triggering of strong antigens, while cytokines produced by the innate immune response may be necessary for TCR triggering and iNKT cell activation in the presence of weak antigens. Here, we will review the molecular basis of iNKT cell

  7. 14 CFR 1260.72 - Adherence to original budget estimates.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Adherence to original budget estimates. 1260.72 Section 1260.72 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION GRANTS AND COOPERATIVE AGREEMENTS General Post-Award Requirements § 1260.72 Adherence to original budget estimates....

  8. Concern between medication non-adherence and diabetes associated depression

    Directory of Open Access Journals (Sweden)

    Krishnan Vengadaragava Chary

    2016-04-01

    Conclusions: Unnoticed depression among diabetic individuals reduces treatment adherence and must be addressed in any patient showing poor response to the treatment. Improving treatment adherence helps to combat diabetes as well as depression. [Int J Basic Clin Pharmacol 2016; 5(2.000: 523-527

  9. Treatment Adherence among Latina Female Adolescent Suicide Attempters.

    Science.gov (United States)

    Rotheram-Borus, Mary Jane; Piacentini, John; Van Rossem, Ronan; Graae, Flemming; Cantwell, Coleen; Castro-Blanco, David; Feldman, Julie

    1999-01-01

    Disenfranchised Latina adolescents (N=140) and their mothers presenting at a large urban emergency room after a suicide attempt by the adolescent were assessed to examine treatment adherence. Predictor variables for treatment adherence were established. Results are discussed in relation to treatment session attendance. Implications for the…

  10. Improving Adherence to Hand Hygiene among Health Care Workers

    Science.gov (United States)

    Maskerine, Courtney; Loeb, Mark

    2006-01-01

    Increased adherence to hand hygiene is widely acknowledged to be the most important way of reducing infections in health care facilities. Despite evidence of benefit, adherence to hand hygiene among health care professionals remains low. Several behavioral and organizational theories have been proposed to explain this. As a whole, the success of…

  11. Associations between patient factors and medication adherence: A Jordanian experience

    Directory of Open Access Journals (Sweden)

    Basheti IA

    2016-03-01

    Full Text Available Objective: To explore the effect of patient characteristics and health beliefs on their medication adherence. Methods: Patients (n=167 with chronic conditions (mean age 58.9; SD=13.54, 53% males were recruited from March 2009- to March 2010 using a cross sectional study design. Data collected included patients’ demographics, medical conditions, medications therapeutic regimen, frequency of physician visits and health beliefs. Patient self-reported adherence to medications was assessed by the researcher using a validated and published scale. Treatment related problems (TRPs were evaluated for each patient by competent clinical pharmacists. Associations between patient characteristics/health beliefs with adherence were explored. Results: About half of the patients (46.1% were non-adherent. A significant association was found between lower adherence and higher number of disease states (p<0.001, higher number of medications (p=0.001, and higher number of identified TRPs (p = 0.003. Patient adherence was positively affected by older age, higher educational level, and higher number of physician visits per month, while it was negatively affected by reporting difficulties with getting prescription refills on time. Conclusion: This study identified different factors that may negatively affect adherence, including higher number of medications and disease states, higher number of identified TRPs and inability to getting prescription refills on time. Hence, more care needs to be provided to patients with complex therapeutic regimens in order to enhance adherence.

  12. Method for preventing micromechanical structures from adhering to another object

    Science.gov (United States)

    Smith, J.H.; Ricco, A.J.

    1998-06-16

    A method for preventing micromechanical structures from adhering to another object includes the step of immersing a micromechanical structure and its associated substrate in a chemical species that does not stick to itself. The method can be employed during the manufacture of micromechanical structures to prevent micromechanical parts from sticking or adhering to one another and their associated substrate surface. 3 figs.

  13. Reliability of assessment of adherence to an antimicrobial treatment guideline

    NARCIS (Netherlands)

    Mol, PGM; Gans, ROB; Panday, PVN; Degener, JE; Laseur, M; Haaijer-Ruskamp, FM

    2005-01-01

    Assessment procedures for adherence to a guideline must be reliable and credible. The aim of this study was to explore the reliability of assessment of adherence, taking account of the professional backgrounds of the observers. A secondary analysis explored the impact of case characteristics on asse

  14. Unravelling adherence to prophylaxis in haemophilia : A patients' perspective

    NARCIS (Netherlands)

    Schrijvers, L. H.; Kars, M. C.; Beijlevelt-van der Zande, M.; Peters, M.; Schuurmans, M. J.; Fischer, K.

    2015-01-01

    Given the lifelong therapy in haemophilia patients, insight in non-adherence behaviour from a patient perspective is important to understand patients' difficulties with the following treatment recommendations. The aim of this study was to clarify the process underlying adherence (behaviour) to proph

  15. 42 CFR 447.304 - Adherence to upper limits; FFP.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 4 2010-10-01 2010-10-01 false Adherence to upper limits; FFP. 447.304 Section 447... Noninstitutional Services § 447.304 Adherence to upper limits; FFP. (a) The Medicaid agency must not pay more than... payments may be made only up to the reasonable charge under Medicare. (c) FFP is not available for a...

  16. Genetic factors in exercise adoption, adherence and obesity.

    Science.gov (United States)

    Herring, M P; Sailors, M H; Bray, M S

    2014-01-01

    Physical activity and exercise play critical roles in energy balance. While many interventions targeted at increasing physical activity have demonstrated efficacy in promoting weight loss or maintenance in the short term, long term adherence to such programmes is not frequently observed. Numerous factors have been examined for their ability to predict and/or influence physical activity and exercise adherence. Although physical activity has been demonstrated to have a strong genetic component in both animals and humans, few studies have examined the association between genetic variation and exercise adherence. In this review, we provide a detailed overview of the non-genetic and genetic predictors of physical activity and adherence to exercise. In addition, we report the results of analysis of 26 single nucleotide polymorphisms in six candidate genes examined for association to exercise adherence, duration, intensity and total exercise dose in young adults from the Training Interventions and Genetics of Exercise Response (TIGER) Study. Based on both animal and human research, neural signalling and pleasure/reward systems in the brain may drive in large part the propensity to be physically active and to adhere to an exercise programme. Adherence/compliance research in other fields may inform future investigation of the genetics of exercise adherence.

  17. Cognitive-Behavioral Therapy for HIV Medication Adherence and Depression

    Science.gov (United States)

    Safren, Steven A.; Hendriksen, Ellen S.; Mayer, Kenneth H.; Mimiaga, Matthew J.; Pickard, Robert; Otto, Michael W.

    2004-01-01

    For patients with HIV, depression is a common, distressing condition that can interfere with a critical self-care behavior--adherence to antiretroviral therapy. The present study describes a cognitive-behavioral treatment designed to integrate cognitive-behavioral therapy for depression with our previously tested approach to improving adherence to…

  18. Adherence to Pharmacological Treatment for Juvenile Bipolar Disorder

    Science.gov (United States)

    Drotar, Dennis; Greenley, Rachel Neff; Demeter, Christine A.; McNamara, Nora K.; Stansbrey, Robert J.; Calabrese, Joseph R.; Stange, Jonathan; Vijay, Priya; Findling, Robert L.

    2007-01-01

    Objective: The objective of this study was to describe the prevalence and correlates of adherence to divalproex sodium (DVPX) and lithium carbonate (Li) combination treatment during the initial stabilization treatment phase. Method: Adherence to Li/DVPX combination therapy was measured by the presence or absence of minimum serum concentrations of…

  19. Psychosocial factors and treatment adherence in paediatric HIV/AIDS.

    Science.gov (United States)

    Naar-King, S; Arfken, C; Frey, M; Harris, M; Secord, E; Ellis, D

    2006-08-01

    A social ecological model provides a promising framework for understanding the individual, family, and societal factors contributing to non-adherence to treatment of paediatric HIV. This study explored which factors relevant to this model are associated with caregivers' adherence and child health outcomes. A cross-sectional design was utilized to assess relationships among current individual, familial, extra-familial factors, caregiver adherence, and viral load. Data were collected from 43 caregivers, and viral load data were obtained from the medical records of their HIV+ children. Caregiver drug and alcohol use and HIV+ status were associated with non-adherence and elevated viral load. Negative outcome expectancy was associated with lower adherence but was not significant in the multivariate analyses. Family factors were not significant, but these measures had low reliability in this sample. Extra-familial factors such as dissatisfaction with medical specialty care and more stressful life events were not directly associated with adherence but were related to increased caregiver substance use. Results of this first study to explore multiple predictors of adherence and health outcomes in paediatric HIV require replication with larger samples, but findings suggest caregiver characteristics that place children at risk for disease progression due to poor adherence to treatment.

  20. Towards tailored and targeted adherence assessment to optimise asthma management

    NARCIS (Netherlands)

    van Boven, Job F. M.; Trappenburg, Jaap C. A.; van der Molen, Thys; Chavannes, Niels H.

    2015-01-01

    In this paper, we aim to emphasise the need for a more comprehensive and tailored approach to manage the broad nature of non-adherence, to personalise current asthma management. Although currently several methods are available to measure the extent of asthma patients' adherence, the vast majority do

  1. 77 FR 20637 - Request for Information on Prescription Medication Adherence

    Science.gov (United States)

    2012-04-05

    ... HUMAN SERVICES Request for Information on Prescription Medication Adherence AGENCY: Department of Health... potential solutions associated with the public health problem of prescription medication non-adherence in..., health care providers, and industry and private organizations in efforts to improve medication...

  2. Medication Adherence in Older Adults: A Qualitative Study

    Science.gov (United States)

    Holt, Elizabeth W.; Rung, Ariane L.; Leon, Kyla A.; Firestein, Catherine; Krousel-Wood, Marie

    2014-01-01

    To effectively address medication adherence and improve cardiovascular health among older adults, a deeper understanding is needed of the barriers that this age group faces and of approaches that would be most effective and feasible for improving adherence. We conducted a focus group study (n = 25) in a diverse population of older adults with…

  3. Medication Adherence in a Comparative Effectiveness Trial for Bipolar Disorder

    Science.gov (United States)

    Sylvia, Louisa G.; Reilly-Harrington, Noreen A.; Leon, Andrew C.; Kansky, Christine I.; Calabrese, Joseph R.; Bowden, Charles L.; Ketter, Terence A.; Friedman, Edward S.; Iosifescu, Dan V.; Thase, Michael E.; Ostacher, Michael J.; Keyes, Michelle; Rabideau, Dustin; Nierenberg, Andrew A.

    2013-01-01

    Objective Psychopharmacology remains the foundation of treatment for bipolar disorder, but medication adherence in this population is low (Range = 20% to 64%). We examined medication adherence in a multi-site, comparative effectiveness study of lithium. Method The Lithium Moderate Dose Use Study (LiTMUS) was a six-month, six-site, randomized effectiveness trial of adjunctive moderate dose lithium therapy compared to optimized treatment in adult outpatients with bipolar I or II disorder (N=283). Medication adherence was measured at each study visit with the Tablet Routine Questionnaire. Results We found that 4.50% of participants reported missing at least 30% of their medications in the past week at baseline and non-adherence remained low throughout the trial (< 7%). Poor medication adherence was associated with more manic symptoms and side effects as well as lower lithium serum levels at mid- and post-treatment, but not with poor quality of life, overall severity of illness, or depressive symptoms. Conclusion Participants in LiTMUS were highly adherent with taking their medications. The lack of association with possible predictors of adherence, such as depression and quality of life, could be explained by the limited variance or other factors as well as by not using an objective measure of adherence. PMID:24117232

  4. Patient adherence to medical treatment. A review of reviews.

    NARCIS (Netherlands)

    Dulmen, S. van; Sluijs, E.; Dijk, L. van; Ridder, D. de; Heerdink, R.; Bensing, J.

    2007-01-01

    BACKGROUND: Patients' non-adherence to medical treatment remains a persistent problem. Many interventions to improve patient adherence are unsuccessful and sound theoretical foundations are lacking. Innovations in theory and practice are badly needed. A new and promising way could be to review the e

  5. Diferenciação de cepas de Candida albicans pelo sistema killer

    Directory of Open Access Journals (Sweden)

    Regina Celia Cândido

    1995-12-01

    Full Text Available Foi estudado o efeito killer de 9 cepas padrão de leveduras sobre 146 amostras de Candida albicans isoladas dos seguintes espécimes clínicos: mucosa bucal, fezes, lavado brônquico, escarro, secreção vaginal, urina, lesão de pele, lesão de unha e sangue. Usando este sistema foi possível diferenciar 23 biotipos de C. albicans. Os biotipos 211, 111 e 811 foram os mais freqüentemente isolados. A maioria das amostras de C. albicans (98,6% foi sensível a pelo menos uma ou mais das 9 cepas killer. Empregando- se este sistema foi possível demonstrar que 2 pacientes albergavam mesmo biotipo killer, respectivamente, 111 e 211, em diferentes espécimes clínicos, e em outro paciente, o mesmo biotipo (211 foi isolado de hemoculturas realizadas em ocasiões distintas. O uso do sistema killer para diferenciar os tipos entre as espécies de leveduras patogênicas, pode ser um método útil para estabelecer a eventual fonte de infecção, constituindo uma ajuda valiosa para o controle e vigilância de infecções nosocomiais causadas por leveduras.

  6. Susceptibility of species within the Sporothrix schenckii complex to a panel of killer yeasts.

    Science.gov (United States)

    Stopiglia, Cheila Denise Ottonelli; Heidrich, Daiane; Sorrentino, Julia Medeiros; Vieira, Fabiane Jamono; Landell, Melissa Fontes; Valente, Patrícia; Scroferneker, Maria Lúcia

    2014-06-01

    The Sporothrix schenckii complex is the etiologic agent of sporotrichosis, a subacute or chronic mycosis which can affect humans and animals. Killer yeasts have been used in the medical field for development of novel antimycotics and biotyping of pathogenic fungi. The action of 18 killer yeasts on the growth of 88 characterized S. schenckii, Sporothrix globosa, Sporothrix brasiliensis, and Sporothrix mexicana clinical and environmental isolates was evaluated. Killer studies were performed on Petri dishes containing cheese black starch agar. The yeasts Candida catenulata (QU26, QU31, QU127, LV102); Trichosporon faecale (QU100); Trichosporon japonicum (QU139); Kluyveromyces lactis (QU30, QU99, QU73); Kazachstania unispora (QU49), Trichosporon insectorum (QU89), and Kluyveromyces marxianus (QU103) showed activity against all strains of the S. schenckii complex tested. Observation by optical microscopy of S. brasiliensis 61 within the inhibition haloes around the colonies of the killer yeasts QU100, QU139, and LV102 showed that there was no conidiation, but there was hyphal proliferation. The toxins were fungistatic against S. brasiliensis 61. There was no difference in susceptibility to the toxins among the S. schenckii species complex. Further investigations are necessary to clearly establish the mechanism of action of the toxins.

  7. Evidence for Natural Killer Cell-Mediated Protection from Metastasis Formation in Uveal Melanoma Patients

    NARCIS (Netherlands)

    Maat, Willem; van der Slik, Arno R.; Verhoeven, Dirk H. J.; Alizadeh, Behrooz Z.; Ly, Long V.; Verduijn, Willem; Luyten, Gregorius P. M.; Mulder, Arend; van Hall, Thorbald; Koning, Frits; Jager, Martine J.; van Bergen, Jeroen

    2009-01-01

    PURPOSE. In uveal melanoma, low human leukocyte antigen (HLA) class I expression on primary tumors is associated with a decreased risk of metastasis. Consequently, it has been suggested that natural killer (NK) cells, which detect decreased expression of HLA class I, are involved in the immune contr

  8. Sipping Coffee with a Serial Killer: On Conducting Life History Interviews with a Criminal Genius

    Science.gov (United States)

    Oleson, J. C.

    2004-01-01

    As part of my Ph.D. research on criminal genius, I conducted 44 semi-structured interviews. One of the 44 subjects, in particular, stood out. This noteworthy individual claimed that he had killed 15 people. His story was particularly interesting because--unlike most social research involving serial killers--he claimed that he had never been…

  9. Paucity of natural killer and cytotoxic T cells in human neuromyelitis optica lesions.

    Science.gov (United States)

    Saadoun, Samira; Bridges, Leslie R; Verkman, A S; Papadopoulos, Marios C

    2012-12-19

    Neuromyelitis optica is a severe inflammatory demyelinating disease of the central nervous system. Most patients with neuromyelitis optica have circulating immunoglobulin G (IgG) antibodies against the astrocytic water channel protein aquaporin-4 (AQP4), which are pathogenic. Anti-AQP4 IgG-mediated complement-dependent astrocyte toxicity is a key mechanism of central nervous system damage in neuromyelitis optica, but the role of natural killer and cytotoxic T cells is unknown. Our objective was to determine whether natural killer and cytotoxic T cells play a role in human neuromyelitis optica lesions. We immunostained four actively demyelinating lesions, obtained from patients with anti-AQP4 IgG positive neuromyelitis optica, for Granzyme B and Perforin. The inflammatory cells were perivascular neutrophils, eosinophils and macrophages, with only occasional Granzyme B+ or Perforin+ cells. Greater than 95% of inflamed vessels in each lesion had no surrounding Granzyme B+ or Perforin+ cells. Granzyme B+ or Perforin+ cells were abundant in human spleen (positive control). Although natural killer cells produce central nervous system damage in mice injected with anti-AQP4 IgG, our findings here indicate that natural killer-mediated and T cell-mediated cytotoxicity are probably not involved in central nervous system damage in human neuromyelitis optica.

  10. Killer whale presence in relation to naval sonar activity and prey abundance in northern Norway

    NARCIS (Netherlands)

    Kuningas, S.; Kvadsheim, P.H.; Lam, F.P.A.; Miller, P.J.O.

    2013-01-01

    In this study, retrospective data on naval sonar activity and prey abundance were correlated with killer whale sightings within a fjord basin in northern Norway. In addition, passive acoustic and visual marine mammal surveys were conducted before, during, and after a specific navy exercise in 2006.

  11. Native Killer Yeasts as Biocontrol Agents of Postharvest Fungal Diseases in Lemons

    Science.gov (United States)

    Garnica, Nydia Mercedes; Fernández-Zenoff, María Verónica; Farías, María Eugenia; Sepulveda, Milena; Ramallo, Jacqueline; Dib, Julián Rafael

    2016-01-01

    Economic losses caused by postharvest diseases represent one of the main problems of the citrus industry worldwide. The major diseases affecting citrus are the "green mold" and "blue mold", caused by Penicillium digitatum and P. italicum, respectively. To control them, synthetic fungicides are the most commonly used method. However, often the emergence of resistant strains occurs and their use is becoming more restricted because of toxic effects and environmental pollution they generate, combined with trade barriers to international markets. The aim of this work was to isolate indigenous killer yeasts with antagonistic activity against fungal postharvest diseases in lemons, and to determine their control efficiency in in vitro and in vivo assays. Among 437 yeast isolates, 8.5% show to have a killer phenotype. According to molecular identification, based on the 26S rDNA D1/D2 domain sequences analysis, strains were identified belonging to the genera Saccharomyces, Wickerhamomyces, Kazachstania, Pichia, Candida and Clavispora. Killers were challenged with pathogenic molds and strains that caused the maximum in vitro inhibition of P. digitatum were selected for in vivo assays. Two strains of Pichia and one strain of Wickerhamomyces depicted a significant protection (p <0.05) from decay by P. digitatum in assays using wounded lemons. Thus, the native killer yeasts studied in this work showed to be an effective alternative for the biocontrol of postharvest fungal infections of lemons and could be promising agents for the development of commercial products for the biological control industry. PMID:27792761

  12. Cytotoxic/natural killer cell cutaneous lymphomas. Report of EORTC Cutaneous Lymphoma Task Force Workshop.

    NARCIS (Netherlands)

    Santucci, M.; Pimpinelli, N; Massi, D; Kadin, ME; Meijer, C.J.L.M.; Muller-Hermelink, HK; Paulli, M; Wechsler, J.; Willemze, R.; Audring, H; Bernengo, MG; Cerroni, L.; Chimenti, S.; Chott, A.; Diaz-Perez, J.L.; Dippel, E; Duncan, LM; Feller, AC; Geerts, M.L.; Hallermann, C; Kempf, W; Russell-Jones, R; Sander, C; Berti, E.

    2003-01-01

    BACKGROUND: Cutaneous lymphomas expressing a cytotoxic or natural killer (NK) cell phenotype represent a group of lymphoproliferative disorders for which there is currently much confusion and little consensus regarding the best nomenclature and classification. METHODS: This study analyzes 48 cases o

  13. Natural killer cells facilitate PRAME-specific T-cell reactivity against neuroblastoma

    NARCIS (Netherlands)

    Spel, Lotte; Boelens, Jaap Jan; Van Der Steen, Dirk M.; Blokland, Nina J G; van Noesel, Max M.; Molenaar, Jan J.; Heemskerk, Mirjam H M; Boes, Marianne; Nierkens, Stefan

    2015-01-01

    Neuroblastoma is the most common solid tumor in children with an estimated 5-year progression free survival of 20-40% in stage 4 disease. Neuroblastoma actively avoids recognition by natural killer (NK) cells and cytotoxic T lymphocytes (CTLs). Although immunotherapy has gained traction for neurobla

  14. Immune functions in beluga whales (Delphinapterus leucas): Evaluation of natural killer cell activity.

    NARCIS (Netherlands)

    S. De Guise (Sylvain); P.S. Ross (Peter); A.D.M.E. Osterhaus (Albert); D. Martineau (Daniel); P. Beland; M. Fournier (Michel)

    1997-01-01

    textabstractNatural killer (NK) activity, an important non-specific defense mechanism against viral infections and tumors, was demonstrated in beluga whales using two different methods: 51Cr release and flow cytometry. Using the 51Cr release assay, NK activity in belugas was shown to be higher again

  15. TdKT, a new killer toxin produced by Torulaspora delbrueckii effective against wine spoilage yeasts.

    Science.gov (United States)

    Villalba, María Leticia; Susana Sáez, Julieta; Del Monaco, Silvana; Lopes, Christian Ariel; Sangorrín, Marcela Paula

    2016-01-18

    Microbiological spoilage is a major concern throughout the wine industry, and control tools are limited. This paper addresses the identification and partial characterization of a new killer toxin from Torulaspora delbrueckii with potential biocontrol activity of Brettanomyces bruxellensis, Pichia guilliermondii, Pichia manshurica and Pichia membranifaciens wine spoilage. A panel of 18 different wine strains of T. delbrueckii killer yeasts was analysed, and the strain T. delbrueckii NPCC 1033 (TdKT producer) showed a significant inhibitory effect on the growth of all different spoilage yeasts evaluated. The TdKT toxin was then subjected to a partial biochemical characterization. Its estimated molecular weight was N30 kDa and it showed glucanase and chitinase enzymatic activities. The killer activity was stable between pH 4.2 and 4.8 and inactivated at temperature above 40 °C. Pustulan and chitin — but not other cell wall polysaccharides — prevented sensitive yeast cells from being killed by TdKT, suggesting that those may be the first toxin targets in the cell wall. TdKT provoked an increase in necrosis cell death after 3 h treatment and apoptotic cell death after 24 h showing time dependence in its mechanisms of action. Killer toxin extracts were active at oenological conditions, confirming their potential use as a biocontrol tool in winemaking.

  16. An agent-based model of dialect evolution in killer whales.

    Science.gov (United States)

    Filatova, Olga A; Miller, Patrick J O

    2015-05-21

    The killer whale is one of the few animal species with vocal dialects that arise from socially learned group-specific call repertoires. We describe a new agent-based model of killer whale populations and test a set of vocal-learning rules to assess which mechanisms may lead to the formation of dialect groupings observed in the wild. We tested a null model with genetic transmission and no learning, and ten models with learning rules that differ by template source (mother or matriline), variation type (random errors or innovations) and type of call change (no divergence from kin vs. divergence from kin). The null model without vocal learning did not produce the pattern of group-specific call repertoires we observe in nature. Learning from either mother alone or the entire matriline with calls changing by random errors produced a graded distribution of the call phenotype, without the discrete call types observed in nature. Introducing occasional innovation or random error proportional to matriline variance yielded more or less discrete and stable call types. A tendency to diverge from the calls of related matrilines provided fast divergence of loose call clusters. A pattern resembling the dialect diversity observed in the wild arose only when rules were applied in combinations and similar outputs could arise from different learning rules and their combinations. Our results emphasize the lack of information on quantitative features of wild killer whale dialects and reveal a set of testable questions that can draw insights into the cultural evolution of killer whale dialects.

  17. Factors related to adherence to treatment for systemic hypertension

    Directory of Open Access Journals (Sweden)

    Silvana Maria Coelho Leite Fava

    2014-06-01

    Full Text Available This study aimed to seek the evidence available in the literature regarding the factors related to adherence to treatment for systemic hypertension. It used the method of integrative review in the databases MEDLINE, CINAHL, and LILACS, using the keywords: hypertension, compliance, non-compliance, adherence, non-adherence, patient compliance, in the period 2004 – 2008, and articles in Portuguese, English and Spanish, with the use of a validated instrument and content analysis. 28 studies were selected, 64.3% of which had level of evidence VI. The following were identified as factors related to adherence to treatment: treatment costs, educational activities, sex, physician-patient relationship, physiological and behavioral aspects, drug therapy, attending checkups and lifestyle. The use of combined strategies is suggested in order to increase the individuals’ adherence to the treatment. Gaps point to the valorization of dialogic relationships for integrated and more efficacious health practices.

  18. Interventional tools to improve medication adherence: review of literature

    Science.gov (United States)

    Costa, Elísio; Giardini, Anna; Savin, Magda; Menditto, Enrica; Lehane, Elaine; Laosa, Olga; Pecorelli, Sergio; Monaco, Alessandro; Marengoni, Alessandra

    2015-01-01

    Medication adherence and persistence is recognized as a worldwide public health problem, particularly important in the management of chronic diseases. Nonadherence to medical plans affects every level of the population, but particularly older adults due to the high number of coexisting diseases they are affected by and the consequent polypharmacy. Chronic disease management requires a continuous psychological adaptation and behavioral reorganization. In literature, many interventions to improve medication adherence have been described for different clinical conditions, however, most interventions seem to fail in their aims. Moreover, most interventions associated with adherence improvements are not associated with improvements in other outcomes. Indeed, in the last decades, the degree of nonadherence remained unchanged. In this work, we review the most frequent interventions employed to increase the degree of medication adherence, the measured outcomes, and the improvements achieved, as well as the main limitations of the available studies on adherence, with a particular focus on older persons. PMID:26396502

  19. Quantification of the Forgiveness of Drugs to Imperfect Adherence.

    Science.gov (United States)

    Assawasuwannakit, P; Braund, R; Duffull, S B

    2015-03-01

    The circumstance of how sensitive therapeutic success is under imperfect adherence is driven by the property known as forgiveness. To date, no studies have considered variability in the pharmacokinetic-pharmacodynamic process in conjunction with imperfect adherence patterns in order to develop a comparative criterion to determine the forgiveness of a drug. In this study, we have proposed a criterion to quantify forgiveness; illustrated the criterion for a theoretical example and evaluated the forgiveness of a motivating example, namely warfarin. A forgiveness criterion, relative forgiveness, is defined as the number of times more likely that a target is successfully attained under perfect adherence compared to imperfect adherence; or when comparing two drugs under a standard setting of imperfect adherence. The relative forgiveness criterion may have important implications for both drug development and clinical practice since the choice of drug can account for the likely influence of its forgiveness.

  20. Forgiveness of non-adherence to HIV-1 antiretroviral therapy.

    Science.gov (United States)

    Shuter, Jonathan

    2008-04-01

    Superior adherence to HIV-1 antiretroviral therapy is a mainstay of successful HIV management. Studies performed in the early era of highly active antiretroviral therapy demonstrated the need for > or =95% adherence in order to achieve and sustain viral suppression. High rates of viral suppression have been observed at more moderate levels of adherence with newer antiretroviral regimens. The term 'forgiveness' is being used to describe the ability of a regimen to achieve and sustain viral suppression, despite suboptimal adherence. A variety of pharmacological, viral and host properties determine the level of forgiveness of any specific regimen. As the choice of treatment options continues to expand, forgiveness of non-adherence is likely to emerge as an increasingly important factor in therapeutic decision-making.

  1. Vocalisations of Killer Whales (Orcinus orca in the Bremer Canyon, Western Australia.

    Directory of Open Access Journals (Sweden)

    Rebecca Wellard

    Full Text Available To date, there has been no dedicated study in Australian waters on the acoustics of killer whales. Hence no information has been published on the sounds produced by killer whales from this region. Here we present the first acoustical analysis of recordings collected off the Western Australian coast. Underwater sounds produced by Australian killer whales were recorded during the months of February and March 2014 and 2015 in the Bremer Canyon in Western Australia. Vocalisations recorded included echolocation clicks, burst-pulse sounds and whistles. A total of 28 hours and 29 minutes were recorded and analysed, with 2376 killer whale calls (whistles and burst-pulse sounds detected. Recordings of poor quality or signal-to-noise ratio were excluded from analysis, resulting in 142 whistles and burst-pulse vocalisations suitable for analysis and categorisation. These were grouped based on their spectrographic features into nine Bremer Canyon (BC "call types". The frequency of the fundamental contours of all call types ranged from 600 Hz to 29 kHz. Calls ranged from 0.05 to 11.3 seconds in duration. Biosonar clicks were also recorded, but not studied further. Surface behaviours noted during acoustic recordings were categorised as either travelling or social behaviour. A detailed description of the acoustic characteristics is necessary for species acoustic identification and for the development of passive acoustic tools for population monitoring, including assessments of population status, habitat usage, migration patterns, behaviour and acoustic ecology. This study provides the first quantitative assessment and report on the acoustic features of killer whales vocalisations in Australian waters, and presents an opportunity to further investigate this little-known population.

  2. Vocalisations of Killer Whales (Orcinus orca) in the Bremer Canyon, Western Australia.

    Science.gov (United States)

    Wellard, Rebecca; Erbe, Christine; Fouda, Leila; Blewitt, Michelle

    2015-01-01

    To date, there has been no dedicated study in Australian waters on the acoustics of killer whales. Hence no information has been published on the sounds produced by killer whales from this region. Here we present the first acoustical analysis of recordings collected off the Western Australian coast. Underwater sounds produced by Australian killer whales were recorded during the months of February and March 2014 and 2015 in the Bremer Canyon in Western Australia. Vocalisations recorded included echolocation clicks, burst-pulse sounds and whistles. A total of 28 hours and 29 minutes were recorded and analysed, with 2376 killer whale calls (whistles and burst-pulse sounds) detected. Recordings of poor quality or signal-to-noise ratio were excluded from analysis, resulting in 142 whistles and burst-pulse vocalisations suitable for analysis and categorisation. These were grouped based on their spectrographic features into nine Bremer Canyon (BC) "call types". The frequency of the fundamental contours of all call types ranged from 600 Hz to 29 kHz. Calls ranged from 0.05 to 11.3 seconds in duration. Biosonar clicks were also recorded, but not studied further. Surface behaviours noted during acoustic recordings were categorised as either travelling or social behaviour. A detailed description of the acoustic characteristics is necessary for species acoustic identification and for the development of passive acoustic tools for population monitoring, including assessments of population status, habitat usage, migration patterns, behaviour and acoustic ecology. This study provides the first quantitative assessment and report on the acoustic features of killer whales vocalisations in Australian waters, and presents an opportunity to further investigate this little-known population.

  3. [THE USE OF "REAMBERIN" AS BIOLOGICAL RESPONSE MODIFIER TO INCREASE THE NATURAL KILLER CELLS' CYTOTOXICITY IN PATIENTS WITH LUNG TUBERCULOSIS].

    Science.gov (United States)

    Kholamov, A I; Mirzomogomedova, V G; Chernoshey, D A; Lizunov, E S

    2015-01-01

    The effect of the drug "Reamberin" cytotoxic activity of natural killer cells (EC) in an experimental model in the blood samples of patients with pulmonary tuberculosis and healthy donors. Simulation acute systemic inflammation by adding to the culture medium of BCG. After 48 hours, selection was performed mononuclear peripheral blood by gradient centrifugation tests set cytotoxic tumor cell line K-562. Revealed the stimulating effect of the drug "Reamberin" cytotoxic activity of natural killer cells. Metabolic Correction has had a positive impact on the energy metabolism of blood natural killer cells, to increase their survial and cytotoxicity.

  4. Killer phenotype of indigenous yeasts isolated from Argentinian wine cellars and their potential starter cultures for winemaking.

    Science.gov (United States)

    de Ullivarri, Miguel Fernández; Mendoza, Lucía M; Raya, Raúl R; Farías, Marta E

    2011-11-01

    Of 31 yeasts, from different surfaces of two cellars from the northwest region of Argentina, 11 expressed killer activity against the sensitive strain Saccharomyces cerevisiae P351. Five of these killer yeasts were identified as S. cerevisiae by phenotypic tests and PCR-RFLP analysis. Two S. cerevisiae killer strains, Cf5 and Cf8, were selected based on their excellent kinetic and enological properties as potential autochthonous mixed starter cultures to be used during wine fermentation. They could dominate the natural microbiota in fermentation vats and keep the typical sensorial characteristics of the wine of this region.

  5. Unravelling adherence to prophylaxis in haemophilia: a patients' perspective.

    Science.gov (United States)

    Schrijvers, L H; Kars, M C; Beijlevelt-van der Zande, M; Peters, M; Schuurmans, M J; Fischer, K

    2015-09-01

    Given the lifelong therapy in haemophilia patients, insight in non-adherence behaviour from a patient perspective is important to understand patients' difficulties with the following treatment recommendations. The aim of this study was to clarify the process underlying adherence (behaviour) to prophylactic treatment, from a patients' perspective. To develop a grounded theory, a qualitative study using individual in-depth interviews was performed to understand experiences, perceptions and beliefs concerning adherence to prophylaxis. From two Dutch treatment centres, 21 adults with haemophilia using prophylaxis were interviewed. Patients were asked how they experience their task to administer prophylaxis and how they adhere to this. The interviews were transcribed, coded and analysed in an iterative process, leading to the development of the grounded theory. Adherence was determined by the position of prophylaxis in life. The position of prophylaxis was determined by the perception of prophylaxis and the ability to exert prophylaxis. Patients' perception was influenced by two main factors: acceptance of haemophilia and feeling/fearing symptoms. The ability to exert prophylaxis was influenced by understanding haemophilia and prophylaxis and planning/infusion skills. The combination of different perceptions and skills led to four main positions of prophylaxis in life: (i) prophylaxis integrated in life, (ii) prophylaxis according to doctors' advice, struggling with irregular situations, (iii) prophylaxis is too much to handle, (iv) prophylaxis is a confrontation with illness. The adherence level gradually decreased from position 1 to 4. This information can be used to design tailored interventions to promote adherence.

  6. Factors affecting adherence to a raw vegan diet.

    Science.gov (United States)

    Link, Lilli B; Jacobson, Judith S

    2008-02-01

    The purpose of this study was to evaluate adherence and identify predictors of adherence to a raw vegan diet (i.e., uncooked plant foods) following a stay at a raw vegan institute. In this cohort study of guests at a raw vegan institute, subjects completed written questionnaires upon arrival and 12 weeks later. Of 107 eligible guests, 84 participated. Mean age was 54 years, 23 were male, and 73 white. Fifty-one completed the 12-week follow-up. Eight (16%) reported their diet to be 80% raw vegan at baseline and 14 (28%) at follow-up. Based on a raw vegan dietary adherence score (range 0-42) created for this study, mean adherence (SD) increased from 15.1 (5.4) to 17.0 (5.8) over 12 weeks (p=0.03). Baseline predictors of adherence included: education (beta=0.95), severity of disease (beta=0.98), and self-efficacy to adhere (beta=0.72). Future interventions that evaluate this diet should address self-efficacy, an important, potentially remediable predictor of adherence.

  7. Spillover adherence effects of fixed-dose combination HIV therapy

    Directory of Open Access Journals (Sweden)

    Kauf TL

    2012-02-01

    Full Text Available Teresa L Kauf1, Keith L Davis2, Stephanie R Earnshaw2, E Anne Davis31Department of Pharmaceutical Outcomes and Policy, College of Pharmacy, University of Florida, Gainesville, FL, 2RTI Health Solutions, Research Triangle Park, NC, 3Independent consultant, Pittsboro, NC, USAAbstract: The impact of fixed-dose combination (FDC products on adherence to other, non-fixed regimen components has not been examined. We compared adherence to a third antiretroviral (ART component among patients receiving a nucleoside reverse transcriptase inhibitor (NRTI backbone consisting of the FDC Epzicom®, GlaxoSmithKline Inc, Research Triangle Park, NC (abacavir sulfate 600 mg + lamivudine 300 mg; FDC group versus NRTI combinations taken as two separate pills (NRTI Combo group using data from a national sample of 30 health plans covering approximately 38 million lives from 1997 to 2005. Adherence was measured as the medication possession ratio (MPR. Multivariate logistic regression compared treatment groups based on the likelihood of achieving ≥95% adherence, with sensitivity analyses using alternative thresholds. MPR was assessed as a continuous variable using multivariate linear regression. Covariates included age, gender, insurance payer type, year of study drug initiation, presence of mental health and substance abuse disorders, and third agent class. The study sample consisted of 650 FDC and 1947 NRTI Combo patients. Unadjusted mean adherence to the third agent was higher in the FDC group than the NRTI Combo group (0.92 vs 0.85; P < 0.0001. In regression analyses, FDC patients were 48% and 39% more likely to achieve 95% and 90% third agent adherence, respectively (P ≤ 0.03. None of the other MPR specifications achieved comparable results. Among managed care patients, use of an FDC appears to substantially improve adherence to a third regimen component and thus the likelihood of achieving the accepted standard for adherence to HIV therapy of 95%.Keywords

  8. Adherence to diabetes regimens: empirical status and clinical applications.

    Science.gov (United States)

    Kurtz, S M

    1990-01-01

    Adherence to diabetes treatment regimens has proved to be a conceptual and empirical enigma. Consequently, reliable and valid applications to the clinical practice of diabetes care and education have been wanting. Rates of nonadherence are staggeringly high, regardless of the methodology employed, and verification of self-reports is complicated by social desirability to appear compliant. Low intertask correlations further complicate our understanding of adherence-metabolic control relationships. Studies relating to the Health Belief Model, social learning theory, and the psychology of interpersonal relationships that have sought to identify determinants of adherence behaviors have specific relevance to the clinical practice of diabetes education.

  9. Primary non-adherence to prescribed medication in general practice

    DEFF Research Database (Denmark)

    Linnet, Kristján; Halldórsson, Matthías; Thengilsdóttir, Gudrún

    2013-01-01

    prescriptions issued electronically by 140 physicians at 16 primary health care centres in the Reykjavik capital area during two periods before and after increases in copayment were matched with those dispensed in pharmacies, the difference constituting primary non-adherence (population: 200&emsp14......;000; patients: 21 571; prescriptions: 22 991). Eight drug classes were selected to reflect symptom relief and degree of copayment. Two-tailed chi-square test and odds ratios for non-adherence by patient copayment groups were calculated. RESULTS: The rate of primary non-adherence was 6...

  10. SRKW acoustic response - Investigating noise effects on the acoustic signals and behavior of Southern Resident killer whales (Orcinus orca)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — In this study, vocal compensation is being investigated in Southern Resident killer whale (SRKW) calls to determine the degree to which whales can adjust to...

  11. Severe cutaneous human papilloma virus infection associated with Natural Killer cell deficiency following stem cell transplantation for severe combined immunodeficiency

    Science.gov (United States)

    Kamili, Qurat-ul-Ain; Seeborg, Filiz O; Saxena, Kapil; Nicholas, Sarah K; Banerjee, Pinaki P; Angelo, Laura S; Mace, Emily M; Forbes, Lisa R; Martinez, Caridad; Wright, Teresa S; Orange, Jordan S.; Hanson, Imelda Celine

    2016-01-01

    Capsule Summary The authors identify Natural Killer cell deficiency in post-transplant severe combined immunodeficiency patients who developed severe human papilloma virus infections as a long term complication. PMID:25159470

  12. Suur Miller ja Väike Killer / Tiit Palu, Andrus Allikvee ; intervjueerinud Anu Tonts ja Sven Karja

    Index Scriptorium Estoniae

    Palu, Tiit, 1970-

    1997-01-01

    Vanemuises esietenduvad 19. mail Arthur Milleri 'Sööst kuristikku' (lavastaja Andrus Allikvee) ja 20. mail Tracy Lettsi 'Killer Joe' (lavastaja Tiit Palu). Postimehe küsitlus lavastajatele (vastavad samadele küsimustele)

  13. The association of killer cell immunoglobulin like receptor gene polylmorphism with cytomegalovirus infection after hematopoietic stem cell transplantation

    Institute of Scientific and Technical Information of China (English)

    吴小津

    2013-01-01

    Objective To explore the influence of the killer cell immunoglobulin like receptor(KIR)gene polymorphism on cytomegalovirus(CMV)infection and pathogenesis after hematopoietic stem cell transplantation(HSCT)

  14. Fewer Bacteria Adhere to Softer Hydrogels.

    Science.gov (United States)

    Kolewe, Kristopher W; Peyton, Shelly R; Schiffman, Jessica D

    2015-09-01

    Clinically, biofilm-associated infections commonly form on intravascular catheters and other hydrogel surfaces. The overuse of antibiotics to treat these infections has led to the spread of antibiotic resistance and underscores the importance of developing alternative strategies that delay the onset of biofilm formation. Previously, it has been reported that during surface contact, bacteria can detect surfaces through subtle changes in the function of their motors. However, how the stiffness of a polymer hydrogel influences the initial attachment of bacteria is unknown. Systematically, we investigated poly(ethylene glycol) dimethacrylate (PEGDMA) and agar hydrogels that were 20 times thicker than the cumulative size of bacterial cell appendages, as a function of Young's moduli. Soft (44.05-308.5 kPa), intermediate (1495-2877 kPa), and stiff (5152-6489 kPa) hydrogels were synthesized. Escherichia coli and Staphylococcus aureus attachment onto the hydrogels was analyzed using confocal microscopy after 2 and 24 h incubation periods. Independent of hydrogel chemistry and incubation time, E. coli and S. aureus attachment correlated positively to increasing hydrogel stiffness. For example, after a 24 h incubation period, there were 52 and 82% fewer E. coli adhered to soft PEGDMA hydrogels than to the intermediate and stiff PEGDMA hydrogels, respectively. A 62 and 79% reduction in the area coverage by the Gram-positive microbe S. aureus occurred after 24 h incubation on the soft versus intermediate and stiff PEGDMA hydrogels. We suggest that hydrogel stiffness is an easily tunable variable that could potentially be used synergistically with traditional antimicrobial strategies to reduce early bacterial adhesion and therefore the occurrence of biofilm-associated infections.

  15. Fewer Bacteria Adhere to Softer Hydrogels

    Science.gov (United States)

    Kolewe, Kristopher W.; Peyton, Shelly R.; Schiffman, Jessica D.

    2015-01-01

    Clinically, biofilm-associated infections commonly form on intravascular catheters and other hydrogel surfaces. The overuse of antibiotics to treat these infections has led to the spread of antibiotic resistance and underscores the importance of developing alternative strategies that delay the onset of biofilm formation. Previously, it has been reported that during surface contact, bacteria can detect surfaces through subtle changes in the function of their motors. However, how the stiffness of a polymer hydrogel influences the initial attachment of bacteria is unknown. Systematically, we investigated poly(ethylene glycol) dimethacrylate (PEGDMA) and agar hydrogels that were twenty times thicker than the cumulative size of bacterial cell appendages, as a function of Young’s moduli. Soft (44.05 – 308.5 kPa), intermediate (1495 – 2877 kPa), and stiff (5152 – 6489 kPa) hydrogels were synthesized. Escherichia coli and Staphylococcus aureus attachment onto the hydrogels was analyzed using confocal microscopy after 2 and 24 hr incubation periods. Independent of hydrogel chemistry and incubation time, E. coli and S. aureus attachment correlated positively to increasing hydrogel stiffness. For example, after a 24 hr incubation period, there were 52% and 82% less E. coli adhered to soft PEGDMA hydrogels, than to the intermediate and stiff PEGDMA hydrogels, respectively. A 62% and 79% reduction in the area coverage by the Gram-positive microbe S. aureus occurred after 24 hr incubation on the soft versus intermediate and stiff PEGDMA hydrogels. We suggest that hydrogel stiffness is an easily tunable variable that, potentially, could be used synergistically with traditional antimicrobial strategies to reduce early bacterial adhesion, and therefore the occurrence of biofilm-associated infections. PMID:26291308

  16. Individual killer whale vocal variation during intra-group behavioral dynamics

    Science.gov (United States)

    Grebner, Dawn M.

    The scientific goal of this dissertation was to carefully study the signal structure of killer whale communications and vocal complexity and link them to behavioral circumstances. The overall objective of this research sought to provide insight into killer whale call content and usage which may be conveying information to conspecifics in order to maintain group cohesion. Data were collected in the summers of 2006 and 2007 in Johnstone Strait, British Columbia. For both individuals and small groups, vocalizations were isolated using a triangular hydrophone array and the behavioral movement patterns were captured by a theodolite and video camera positioned on a cliff overlooking the hyrophone locations. This dissertation is divided into four analysis chapters. In Chapter 3, discriminant analysis was used to validate the four N04 call subtypes which were originally parsed due to variations in slope segments. The first two functions of the discriminant analysis explained 97% of the variability. Most of the variability for the N04 call was found in the front convex and the terminal portions of the call, while very little variability was found in the center region of the call. This research revealed that individual killer whales produced multiple subtypes of the N04 call. No correlations of behaviors to acoustic parameters obtained were found. The aim of the Chapter 4 was to determine if killer whale calling behavior varied prior to and after the animals had joined. Pulsed call rates were found to be greater pre- compared to post-joining events. Two-way vocal exchanges were more common occurring 74% of the time during pre-joining events. In Chapter 5, initiated and first response to calls varied between age/sex class groups when mothers were separated from an offspring. Solo mothers and calves initiated pulsed calls more often than they responded. Most of the no vocal responses were due to mothers who were foraging. Finally, observations of the frequency split in N04

  17. Older Adults' Uptake and Adherence to Exercise Classes: Instructors' Perspectives.

    Science.gov (United States)

    Hawley-Hague, Helen; Horne, Maria; Skelton, Dawn A; Todd, Chris

    2016-01-01

    Exercise classes provide a range of benefits for older adults, but adherence levels are poor. We know little of instructors' experiences of delivering exercise classes to older adults. Semistructured interviews, informed by the Theory of Planned Behavior (TPB), were conducted with instructors (n = 19) delivering multicomponent exercise classes to establish their perspectives on older adults' uptake and adherence to exercise classes. Analysis revealed 'barriers' to uptake related to identity, choice/control, cost, and venue, and 'solutions' included providing choice/control, relating exercise to identity, a personal touch, and social support. Barriers to adherence included unrealistic expectations and social influences, and solutions identified were encouraging commitment, creating social cohesion, and an emphasis on achieving outcomes. Older adults' attitudes were an underlying theme, which related to all barriers and solutions. The instructor plays an important, but not isolated, role in older adults' uptake and adherence to classes. Instructors' perspectives help us to further understand how we can design successful exercise classes.

  18. Method of detaching adherent cells for flow cytometry

    KAUST Repository

    Kaur, Mandeep

    2015-12-24

    In one aspect, a method for detaching adherent cells can include adding a cell lifting solution to the media including a sample of adherent cells and incubating the sample of adherent cells with the cell lifting solution. No scraping or pipetting is needed to facilitate cell detachment. The method do not require inactivation of cell lifting solution and no washing of detaching cells is required to remove cell lifting solution. Detached cells can be stained with dye in the presence of cell lifting solution and are further analyzed using flow cytometer. The method has been tested using 6 different cell lines, 4 different assays, two different plate formats (96 and 384 well plates) and two different flow cytometry instruments. The method is simple to perform, less time consuming, with no cell loss and makes high throughput flow cytometry on adherent cells a reality.

  19. In vitro adherence of Moraxella bovis to intact corneal epithelium.

    Science.gov (United States)

    Jackman, S H; Rosenbusch, R F

    1984-09-01

    An in vitro assay is described using radiolabeled Moraxella bovis for studying adherence to intact bovine corneal epithelial surfaces. The assay was optimized for time (45 min) and for the ratio of epithelial cells to bacteria (1:1000) that demonstrated a significant difference in adherence between M. bovis strain 118F, a piliated organism and a nonpiliated variant, strain 118F/4-2. Adherence of these organisms correlated with previous pathogenicity studies involving experimental infection of calves. Scanning electron microscopy of tissues treated in the assay revealed a predilection of M. bovis for dark epithelial cells and for association with depressions in the tissue surface. This assay technique is discussed in comparison with other in vitro adherence assay methods.

  20. Call types of Bigg's killer whales (Orcinus orca) in western Alaska: Using vocal dialects to assess population structure

    Science.gov (United States)

    Sharpe, Deborah Lynn

    Apex predators are important indicators of ecosystem health, but little is known about the population structure of Bigg's killer whales ( Orcinus orca; i.e. 'transient' ecotype) in western Alaska. Currently, all Bigg's killer whales in western Alaska are ascribed to a single broad stock for management under the US Marine Mammal Protection Act. However, recent nuclear microsatellite and mitochondrial DNA analyses indicate that this stock is likely comprised of genetically distinct sub-populations. In accordance with what is known about killer whale vocal dialects in other locations, I sought to evaluate Bigg's killer whale population structure by examining the spatial distribution of group-specific call types in western Alaska. Digital audio recordings were collected from 33 encounters with Bigg's killer whales throughout the Aleutian and Pribilof Islands in the summers of 2001-2007 and 2009-2010. Recorded calls were perceptually classified into discrete types and then quantitatively described using 12 structural and time-frequency measures. Resulting call categories were objectively validated using a random forest approach. A total of 36 call types and subtypes were identified across the entire study area, and regional patterns of call type usage revealed three distinct dialects, each of which corresponding to proposed genetic delineations. I suggest that at least three acoustically and genetically distinct subpopulations are present in western Alaska, and put forth an initial catalog for this area describing the regional vocal repertoires of Bigg's killer whale call types.

  1. Loss of Arctic sea ice causing punctuated change in sightings of killer whales (Orcinus orca) over the past century.

    Science.gov (United States)

    Higdon, Jeff W; Ferguson, Steven H

    2009-07-01

    Killer whales (Orcinus orca) are major predators that may reshape marine ecosystems via top-down forcing. Climate change models predict major reductions in sea ice with the subsequent expectation for readjustments of species' distribution and abundance. Here, we measure changes in killer whale distribution in the Hudson Bay region with decreasing sea ice as an example of global readjustments occurring with climate change. We summarize records of killer whales in Hudson Bay, Hudson Strait, and Foxe Basin in the eastern Canadian Arctic and relate them to an historical sea ice data set while accounting for spatial and temporal autocorrelation in the data. We find evidence for "choke points," where sea ice inhibits killer whale movement, thereby creating restrictions to their Arctic distribution. We hypothesize that a threshold exists in seasonal sea ice concentration within these choke points that results in pulses in advancements in distribution of an ice-avoiding predator. Hudson Strait appears to have been a significant sea ice choke point that opened up .approximately 50 years ago allowing for an initial punctuated appearance of killer whales followed by a gradual advancing distribution within the entire Hudson Bay region. Killer whale sightings have increased exponentially and are now reported in the Hudson Bay region every summer. We predict that other choke points will soon open up with continued sea ice melt producing punctuated predator-prey trophic cascades across the Arctic.

  2. Hematological and serum biochemical analytes reflect physiological challenges during gestation and lactation in killer whales (Orcinus orca).

    Science.gov (United States)

    Robeck, Todd R; Nollens, Hendrik H

    2013-01-01

    Gestation and lactation result in metabolic alterations of the dam because of varying demands of the fetus and offspring during the different stages of development. Despite killer whales (Orcinus orca) having one of the longest gestations and highest birth weights of all mammals in human care, these metabolic alterations, and their impact on the physiology of the dam have not been measured. The objectives of this analysis were to determine if physiologic demands on the killer whale during pregnancy and lactation have measurable effects on hematology and biochemical analytes and if detectable, to compare these changes to those which are observed in other mammalian species. Forty hematologic and biochemical analytes from seven female killer whales (22 pregnancies, 1,507 samples) were compared between the following stages: (1) non-pregnant or lactating (control); (2) gestation; and (3) the first 12 months of lactation. Decreased hematocrit, hemoglobin, and red blood cell counts were indicative of plasma volume expansion during mid and late gestation. The killer whales exhibited a progressively increasing physiologic inflammatory state leading up to parturition. Gestation and lactation caused significant shifts in the serum lipid profiles. Gestation and lactation cause significant physiologic changes in the killer whale dam. The last 12 months of gestation had greater physiological impact than lactation, but changes associated with and immediately following parturition were the most dramatic. During this period, killer whales may experience increased susceptibility to illness, and anthropogenic and environmental disturbances.

  3. Predictors of duloxetine adherence and persistence in patients with fibromyalgia

    Directory of Open Access Journals (Sweden)

    Cui Z

    2012-06-01

    Full Text Available Zhanglin Cui, Yang Zhao, Diego Novick, Douglas FariesEli Lilly and Company, Indianapolis, IN, USAObjectives: Adherence to medication for the treatment of fibromyalgia (FM is predictive of lower overall health-care costs, and thus a lower burden on both patients and providers. The objectives of this study were to examine the predictors of adherence to and persistence with duloxetine therapy among commercially insured FM patients, and to identify subgroups of patients with high duloxetine persistence and adherence.Study design: This cross-sectional, retrospective study analyzed medical and pharmacy records over 1 year for patients in the US aged 18–64 years with FM who initiated (no prior 90-day use duloxetine treatment in 2008.Methods: Adherence to duloxetine was measured by medication possession ratio (MPR, with high adherence defined as MPR ≥ 0.8. Persistence was defined as the duration of therapy from the index date to the earliest of: the ending date of the last prescription, the date of the first gap of >15 days between prescriptions, or the end of the study period (12 months. Demographic and clinical predictors of adherence were examined via multiple logistic regression (MLR, and subgroups of duloxetine-persistent and -adherent patients were identified using classification and regression trees (CART.Results: Among 4660 duloxetine patients, 33% achieved high adherence. Factors associated with high adherence from MLR included older age, North Central and Northeast regions, prior venlafaxine, pregabalin, selective serotonin reuptake inhibitor (SSRI, or other antidepressant use, or comorbid dyslipidemia or osteoarthritis (all P < 0.05. CART analysis revealed that patients with prior antidepressant use, aged ≥46, or prior osteoarthritis had higher MPR (all P < 0.05, and patients aged ≥45 with a history of SSRI, venlafaxine, or anticonvulsant use had longer duration of therapy (all P < 0.05.Conclusions: Patients with high adherence to and

  4. Non-adherence to topical treatments for actinic keratosis

    Directory of Open Access Journals (Sweden)

    Shergill B

    2013-12-01

    Full Text Available Bav Shergill,1 Simon Zokaie,2 Alison J Carr3 1Department of Dermatology, Brighton and Sussex University Hospitals, Elm Grove, Brighton, UK; 2Leo Pharma, Princes Risborough, 3Hamell, London, UK Background: There is limited information on the patterns of use, adherence rates, and factors that impact adherence with topical treatments for actinic keratosis (AK. Objectives: To establish patterns of use and adherence with topical treatments for AK and to identify treatment-related factors that impact on adherence. Methods: A community-based, cross-sectional study was performed using a standardized questionnaire completed online or via telephone interview. Patients were stratified according to the presence of AK lesions on the scalp and/or other extremities; and presence of scarring resulting from treatment. Results: This study included 305 patients with AK who were currently using a patient-applied topical therapy for AK or had used one within the previous 12 months. In total, 88% (n = 268/305 of patients were either non-adherent, non-persistent or both non-adherent and non-persistent to topical therapy. Duration of treatment was associated with increasing rates of non-adherence (adjusted odds ratio [OR]; for treatment durations greater than 4 weeks, 2.2, P < 0.01: 52% of patients were non-adherent with 3–4 week treatment duration; 69% of patients with 4–8 week treatment duration; and 71% of patients with 6–12 week treatment duration. There were similar increases in non-persistence with increasing treatment duration (adjusted OR; for treatment durations greater than 4 weeks, 2.1, P < 0.05. Conclusion: This study found high rates of non-adherence and non-persistence in patients with AK. Duration of treatment was a significant factor contributing to non-adherence and non-persistence to topical treatments. Patient-applied topical therapies that require less frequent application and have shorter treatment duration may be associated with improved

  5. Older adults' uptake and adherence to exercise classes: Instructors' perspectives.

    OpenAIRE

    Hawley-Hague, Helen; Horne, Maria; Skelton, Dawn A; Todd, Chris

    2016-01-01

    Exercise classes provide a range of benefits for older adults, but adherence levels are poor. We know little of instructors' experiences of delivering exercise classes to older adults. Semistructured interviews, informed by the Theory of Planned Behavior (TPB), were conducted with instructors (n = 19) delivering multicomponent exercise classes to establish their perspectives on older adults' uptake and adherence to exercise classes. Analysis revealed 'barriers' to uptake related to identity, ...

  6. Elderly adherence to hypertension treatment and nursing interventions

    OpenAIRE

    Jênifa Cavalcante dos Santos; Raquel Sampaio Florêncio; Célida Juliana de Oliveira; Thereza Maria Magalhães Moreira

    2016-01-01

    Adherence to the treatment of arterial hypertension is a challenge to health professionals. Thus, this study aimed at verifying adherence to treatment of hypertension of elderly patients followed in a group and describe the possible nursing interventions on the clientele. The descriptive research was developed in two phases: between December/2008 and January/2009, we used data collection instrument to assess compliance to treatment; from February to April/2009, we used the technique Focus Gro...

  7. Engineering adherent bacteria by creating a single synthetic curli operon.

    Science.gov (United States)

    Drogue, Benoît; Thomas, Philippe; Balvay, Laurent; Prigent-Combaret, Claire; Dorel, Corinne

    2012-11-16

    The method described here consists in redesigning E. coli adherence properties by assembling the minimum number of curli genes under the control of a strong and metal-overinducible promoter, and in visualizing and quantifying the resulting gain of bacterial adherence. This method applies appropriate engineering principles of abstraction and standardization of synthetic biology, and results in the BBa_K540000 Biobrick (Best new Biobrick device, engineered, iGEM 2011). The first step consists in the design of the synthetic operon devoted to curli overproduction in response to metal, and therefore in increasing the adherence abilities of the wild type strain. The original curli operon was modified in silico in order to optimize transcriptional and translational signals and escape the "natural" regulation of curli. This approach allowed to test with success our current understanding of curli production. Moreover, simplifying the curli regulation by switching the endogenous complex promoter (more than 10 transcriptional regulators identified) to a simple metal-regulated promoter makes adherence much easier to control. The second step includes qualitative and quantitative assessment of adherence abilities by implementation of simple methods. These methods are applicable to a large range of adherent bacteria regardless of biological structures involved in biofilm formation. Adherence test in 24-well polystyrene plates provides a quick preliminary visualization of the bacterial biofilm after crystal violet staining. This qualitative test can be sharpened by the quantification of the percentage of adherence. Such a method is very simple but more accurate than only crystal violet staining as described previously with both a good repeatability and reproducibility. Visualization of GFP-tagged bacteria on glass slides by fluorescence or laser confocal microscopy allows to strengthen the results obtained with the 24-well plate test by direct observation of the phenomenon.

  8. Medication adherence: the critical step towards better patient outcome

    Directory of Open Access Journals (Sweden)

    Anish Desai

    2014-10-01

    Full Text Available Medication adherence is defined as patient's adherence to take their medications as prescribed and continue to take the prescribed medication for stipulated time frame. Medication non-adherence is a growing concern to physicians, healthcare systems, and other stakeholders (e.g., payers and there is an increasing evidence of its prevalence and is associated with adverse clinical outcomes eventually resulting into higher costs of care. The cost of non-adherence has been estimated at $100 billion to $300 billion annually, including costs from avoidable hospitalizations, nursing home admissions, and premature deaths. Improving adherence to medication is critical to improve the quality of health care, to encourage better chronic care management, and promote better health outcomes. Reasons for non-adherence are multiple and complex. Studies have reported that poor adherence to drug dosage is due to patient perception that the disease is non-significant, adverse drug effects, lack of treatment effectiveness, and the patient's poor or incomplete knowledge of the disease and (cost. A multifactorial approach is required to tackle this complex problem as a single approach will be ineffective for all patients. The most effective intervention is to use a combination of approaches and address literacy, behavior, and organizational issues. There are challenges as well as opportunities in addressing the public health issue of medication adherence. Changing healthcare reforms, advances in digital health media, social media and modern technologies can now provide alternatives to tackle this issue. [Int J Basic Clin Pharmacol 2014; 3(5.000: 748-754

  9. Adherence of human basophils to cultured umbilical vein endothelial cells.

    OpenAIRE

    1988-01-01

    The mechanism by which circulating human basophils adhere to vascular endothelium and migrate to sites of allergic reactions is unknown. Agents have been identified which stimulate the adherence of purified basophils to cultured human umbilical vein vascular endothelial cells (HuVEC). Treatment of HuVEC with interleukin 1, tumor necrosis factor (TNF), bacterial endotoxin, and 12-O-tetradecanoylphorbol-13-acetate (TPA) resulted in time and dose-dependent increases of adhesiveness for basophils...

  10. Treatment non-adherence in pseudo-refractory epilepsy.

    Science.gov (United States)

    Brodtkorb, Eylert; Samsonsen, Christian; Sund, Janne Kutschera; Bråthen, Geir; Helde, Grethe; Reimers, Arne

    2016-05-01

    Non-adherence to antiepileptic drug treatment strongly affects the outcome of epilepsy and is frequently clinically unrecognized. This review addresses current knowledge on medication-taking behavior in people with epilepsy, as well as the importance of tailoring interventions to the individual patterns of non-adherence. Non-adherence can be categorized as non-initiation, poor execution (accidental or intentional) or non-persistence and are related to clinical characteristics and health care barriers. All available methods to assess adherence are hampered by shortcomings. Self-reports are indirect and subjective. Pill-counts, electronic bottle-tops and pharmacy records are objective, but indirect measures of drug ingestion. Therapeutic drug monitoring is both direct and objective, but pharmacokinetic and diurnal variability must be taken into account. Young adults with generalized epilepsy may be particularly vulnerable to non-adherence. The drug burden in the form of polytherapy, multiple dosing and side effects are obvious obstacles. Poor understanding of the principles of prophylactic treatment as well as drug costs may be important in people with low socioeconomic status. Depression is also associated with low adherence. In people with multihandicaps, failed oral intake may be due to behavioral or physical problems, as well as insufficient education of the caregivers. Non-adherence often results in seizure breakthrough and hospital admissions, but the consequences may be more dramatic. It is the leading cause of status epilepticus in people with epilepsy, and the association with sudden death (SUDEP) is clear. The management of poor drug-taking behavior should be based on the identification of the specific causes in each individual and corresponding multiprofessional interventions. Non-adherence to antiepileptic drugs needs more clinical and scientific attention.

  11. MONETARY EXPECTATIONS OF THE ROMANIAN EXECUTIVES REGARDING THE ADHERATION

    Directory of Open Access Journals (Sweden)

    Ramona DUMITRIU

    2006-01-01

    Full Text Available This paper explores the monetary expectations induced to the managers of Romanian firms by adheration. It is based on an investigation among twenty Romanian executives regarding the impact on adheration over monetary aspects: inflation, exchange rates and adoption of euro. We conclude that the results of the monetary policy in the last years made the executives confident that the Romanian authorities could maintain the monetary stability after theadheration.

  12. Common mental health problems and antiretroviral therapy adherence.

    Science.gov (United States)

    Nel, Adriaan; Kagee, Ashraf

    2011-11-01

    This paper reviews the literature on various mental health problems and their impact on adherence to antiretroviral therapy (ART). Depression, anxiety disorders, and disorders related to substance abuse were identified as key role-players influencing adherence. The severity of symptoms related to these disorders was found to be inversely related to ART adherence, with the possible exception of post-traumatic stress disorder (PTSD). PTSD was found to have both positive and negative implications for adherence, with severity of symptoms ranging from health-protective concern to disabling distress. Possible solutions aimed at addressing the adverse effects of mental health problems on adherence are discussed. Routine screening in ART settings is suggested in settings where follow-up of positive screen scores are possible, along with the necessary interventions to resolve the disorder of concern. Suggested interventions include utilising psychotherapeutic treatment, both in isolation and in conjunction with medication, to address mental health problems. Furthermore, finding effective ways of marshalling social support is recommended for ensuring optimal adherence, and possibly mitigating the adverse effects of mental health problems. Further research is needed to find feasible ways of identifying, assessing and treating patients with mental health problems in resource-constrained settings where HIV prevalence is highest.

  13. Cytokine-induced killer (CIK cell therapy for patients with hepatocellular carcinoma: efficacy and safety

    Directory of Open Access Journals (Sweden)

    Ma Yue

    2012-04-01

    Full Text Available Abstract Purpose To evaluate the efficacy of cytokine-induced killer (CIK cell therapy in the treatment of hepatocellular carcinoma. Materials and methods Randomized phase II and III trials on CIK cell-based therapy were identified by electronic searches using a combination of "hepatocellular carcinoma" and "cytokine-induced killer cells". Results The analysis showed significant survival benefit (one-year survival, p p p p p p +, CD4+, CD4+CD8+ and CD3+CD4+ T cells significantly increased in the CIK group, compared with the non-CIK group (p Conclusions CIK cell therapy demonstrated a significant superiority in prolonging the median overall survival, PFS, DCR, ORR and QoL of HCC patients. These results support further larger scale randomized controlled trials for HCC patients with or without the combination of other therapeutic methods.

  14. Natural Killer cell recognition of melanoma: new clues for a more effective immunotherapy

    Directory of Open Access Journals (Sweden)

    Raquel eTarazona

    2016-01-01

    Full Text Available Natural killer cells participate in the early immune response against melanoma and also contribute to the development of an adequate adaptive immune response by their crosstalk with dendritic cells and cytokine secretion. Melanoma resistance to conventional therapies together with its high immunogenicity justifies the development of novel therapies aimed to stimulate effective immune responses against melanoma. However, melanoma cells frequently escape to CD8 T cell recognition by the down-regulation of major histocompatibility complex class I molecules. In this scenario, Natural killer cells emerge as potential candidates for melanoma immunotherapy due to their capacity to recognize and destroy melanoma cells expressing low levels of major histocompatibility complex class I molecules. In addition, the possibility to combine immune checkpoint blockade with other NK cell potentiating strategies (e.g. cytokine induction of activating receptors has opened new perspectives in the potential use of adoptive NK cell-based immunotherapy in melanoma.

  15. High-frequency modulated signals of killer whales (Orcinus orca) in the North Pacific.

    Science.gov (United States)

    Simonis, Anne E; Baumann-Pickering, Simone; Oleson, Erin; Melcón, Mariana L; Gassmann, Martin; Wiggins, Sean M; Hildebrand, John A

    2012-04-01

    Killer whales in the North Pacific, similar to Atlantic populations, produce high-frequency modulated signals, based on acoustic recordings from ship-based hydrophone arrays and autonomous recorders at multiple locations. The median peak frequency of these signals ranged from 19.6-36.1 kHz and median duration ranged from 50-163 ms. Source levels were 185-193 dB peak-to-peak re: 1 μPa at 1 m. These uniform, repetitive, down-swept signals are similar to bat echolocation signals and possibly could have echolocation functionality. A large geographic range of occurrence suggests that different killer whale ecotypes may utilize these signals.

  16. Unnatural killer cells to prevent bloodborne metastasis: inspiration from biology and engineering.

    Science.gov (United States)

    Mitchell, Michael J; King, Michael R

    2014-06-01

    Metastasis contributes to over 90% of cancer-related deaths. Many types of cancer metastasize via the bloodstream, where circulating tumor cells (CTCs) originating from the primary tumor can undergo selectin-mediated adhesion with the blood vessel wall and subsequently transmigrate to anatomically distant organs. In an effort to neutralize CTCs with the potential to form metastases, a new therapeutic approach has been developed in which circulating leukocytes are functionalized to target and kill cancer cells in the bloodstream. This approach mimics the cytotoxic activity of natural killer cells and the chemical engineering concept of a fluidized bed reactor, which increases the surface area for surface-catalyzed reactions. The resulting 'unnatural killer cells', proven effective in vitro with human blood and also in the living mouse, holds promise in neutralizing CTCs to interrupt the metastasis process.

  17. The inpatient evaluation and treatment of a self-professed budding serial killer.

    Science.gov (United States)

    Reisner, Andrew D; McGee, Mark; Noffsinger, Stephen G

    2003-02-01

    The authors present the case of a man who was hospitalized after claiming that he was about to become a serial killer. The patient presented with extensive written homicidal fantasies and homicidal intentions without evidence of actual homicidal acts. In addition to routine assessments, hospital staff members used case conferences, psychological testing, outside forensic consultation, and a forensic review process to make decisions regarding diagnosis, treatment planning, and discharge. The patient was discharged after 8 months of inpatient treatment and was apparently free of homicidal impulses or symptoms of severe mental illness. A 2-year court commitment allowed for the enactment and potential enforcement of a discharge plan that was endorsed by the patient, the hospital, and community care providers. The authors review diagnostic and risk management issues. Comparisons with known features of typical serial killers are made.

  18. Ficción y serial killer, cuando las mujeres recurren a la violencia

    Directory of Open Access Journals (Sweden)

    Marina López Martínez

    2005-01-01

    Full Text Available This article deals with the figure of the serial killer, a character whose extreme violence has constituted it as the maximum exponent of evilness in our cultural representations. My main interest is to see the treatment that some French police novel writers reserve to him: Brigitte Aubert, Maud Tabachnik, Fred Vargas and Virginie Despentes. The cinematographic adaptation of Despente’s Baise-moi (2000 is specially revealing: while the bloodthirsty murders of Hannibal Lecter or other masculine serial killers receive the approval of the great public and the critic in general, the crimes committed by the two heroins of Virginie Despentes have been put under the censorship. I try to demonstrate from this example that the use of violent women is still disturbing, a taboo after which remains old generic prejudices.

  19. Interplay between carbohydrate and lipid in recognition of glycolipid antigens by natural killer T cells.

    Science.gov (United States)

    Pei, Bo; Vela, Jose Luis; Zajonc, Dirk; Kronenberg, Mitchell

    2012-04-01

    Natural killer T (NKT) cells are a T cell subpopulation that were named originally based on coexpression of receptors found on natural killer (NK) cells, cells of the innate immune system, and by T lymphocytes. The maturation and activation of NKT cells requires presentation of glycolipid antigens by CD1d, a cell surface protein distantly related to the major histocompatibility complex (MHC)-encoded antigen presenting molecules. This specificity distinguishes NKT cells from most CD4(+) and CD8(+) T cells that recognize peptides presented by MHC class I and class II molecules. The rapid secretion of a large amount of both Th1 and Th2 cytokines by activated NKT cells endows them with the ability to play a vital role in the host immune defense against various microbial infections. In this review, we summarize progress on identifying the sources of microbe-derived glycolipid antigens recognized by NKT cells and the biochemical basis for their recognition.

  20. Evaluation of tetrazolium-based semiautomatic colorimetric assay for measurement of human antitumor cytotoxicity

    Energy Technology Data Exchange (ETDEWEB)

    Heo, D.S.; Park, J.G.; Hata, K.; Day, R.; Herberman, R.B.; Whiteside, T.L. (Univ. of Pittsburgh School of Medicine, PA (USA))

    1990-06-15

    A 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT)-based colorimetric assay was developed and compared with 51Cr release from different adherent tumor cell targets (human squamous cell carcinoma lines of the head and neck established in our laboratory, melanoma, and colorectal carcinoma) using 5-7-day human lymphokine-activated killer cells and monocyte-depleted peripheral blood lymphocytes as effectors. With adherent tumor cell targets, MTT colorimetry was more sensitive than the 51Cr release assay in measuring the antitumor activity of effectors: median, 4385 (range, 988-8144) versus median, 1061 (range, 582-7294) lytic units (the number of effector cells required to lyse 20% of 5 x 10(3) targets)/10(7) effectors (P less than 0.01). Background effects (without effector cells) were comparable in 4-h assays (9% versus 10%) between MTT colorimetry and 51Cr release. In 24-h assays, MTT colorimetry showed higher antitumor activity (70-100% versus 40-60% lysis at 1:1 effector:target cell ratio) but lower background effects (6% versus 38%) than 51Cr release assay. Thus, MTT colorimetry was more sensitive, did not use radiolabeled targets, required fewer effector cells, and was easier, less expensive, and better adaptable to serial monitoring of effector cell function in cancer patients. This colorimetric assay is especially well suited to adherent tumor cell targets. The use of adherent tumor cell monolayers, as opposed to trypsinized single cell suspensions, provides an opportunity to measure interactions of effector cells with enzymatically unaltered solid tumor targets. Because of the greater sensitivity of the colorimetric assay, the transformation of MTT data into lytic units, as commonly used for 51Cr release assays, required an adjustment to avoid the extrapolation based on the exponential fit equation.

  1. Comparison of adherent and non-adherent staphylococci in the induction of polymorphonuclear leukocyte activation in vitro

    DEFF Research Database (Denmark)

    Riber, U; Espersen, F; Kharazmi, A

    1995-01-01

    The ability to consume complement and activate neutrophils was investigated for staphylococci adherent to silicone surfaces and non-adherent staphylococci. Staphylococcus epidermidis strain ATCC 14990 and Staphylococcus aureus strain E 2371 were used in this study. The bacteria were allowed...... at 37 degrees C. The bacteria consumed complement to approximately the same extent when adherent to the catheter segments, but more slowly in comparison with planktonic bacteria. When planktonic bacteria were compared, complement was consumed more quickly by S. epidermidis than by S. aureus. Measuring...... the induction of chemiluminescence by planktonic bacteria, S. epidermidis induced a lower response than S. aureus, while when adherent to the catheter segments the bacteria induced similar responses. These responses were only 15 to 20% of those induced by planktonic bacteria and only slightly higher than...

  2. Sadism linked to loneliness: psychodynamic dimensions of the sadistic serial killer Jeffrey Dahmer.

    Science.gov (United States)

    Martens, Willem H J

    2011-08-01

    In this article the psychodynamic link between loneliness and sadism is examined on basis of a case report of the sadistic and cannibalistic serial killer Jeffery Dahmer. Envy, shame/rage mechanism, a disturbed oral-sadistic development, castration fear and severe feelings of inferiority, the conviction of being unlovable and unacceptable, need to diminish tension, powerful and sadistic fantasies as a consequence of inadequate and frustrated parenting, and reality distortion appear to be involved in sadistic etiology.

  3. Immune functions in beluga whales (Delphinapterus leucas): Evaluation of natural killer cell activity.

    OpenAIRE

    Guise, Sylvain De; Ross, Peter; Osterhaus, Albert; Martineau, Daniel; Beland, P; Fournier, Michel

    1997-01-01

    textabstractNatural killer (NK) activity, an important non-specific defense mechanism against viral infections and tumors, was demonstrated in beluga whales using two different methods: 51Cr release and flow cytometry. Using the 51Cr release assay, NK activity in belugas was shown to be higher against K-562 than against YAC-1 cell lines. Moreover, it was enhanced by the addition of human recombinant interleukin-2 with both cell lines. NK activity evaluated by flow cytometry in the peripheral ...

  4. Ecological knowledge, leadership, and the evolution of menopause in killer whales.

    Science.gov (United States)

    Brent, Lauren J N; Franks, Daniel W; Foster, Emma A; Balcomb, Kenneth C; Cant, Michael A; Croft, Darren P

    2015-03-16

    Classic life-history theory predicts that menopause should not occur because there should be no selection for survival after the cessation of reproduction [1]. Yet, human females routinely live 30 years after they have stopped reproducing [2]. Only two other species-killer whales (Orcinus orca) and short-finned pilot whales (Globicephala macrorhynchus) [3, 4]-have comparable postreproductive lifespans. In theory, menopause can evolve via inclusive fitness benefits [5, 6], but the mechanisms by which postreproductive females help their kin remain enigmatic. One hypothesis is that postreproductive females act as repositories of ecological knowledge and thereby buffer kin against environmental hardships [7, 8]. We provide the first test of this hypothesis using a unique long-term dataset on wild resident killer whales. We show three key results. First, postreproductively aged females lead groups during collective movement in salmon foraging grounds. Second, leadership by postreproductively aged females is especially prominent in difficult years when salmon abundance is low. This finding is critical because salmon abundance drives both mortality and reproductive success in resident killer whales [9, 10]. Third, females are more likely to lead their sons than they are to lead their daughters, supporting predictions of recent models [5] of the evolution of menopause based on kinship dynamics. Our results show that postreproductive females may boost the fitness of kin through the transfer of ecological knowledge. The value gained from the wisdom of elders can help explain why female resident killer whales and humans continue to live long after they have stopped reproducing.

  5. Alcohol use, antiretroviral therapy adherence, and preferences regarding an alcohol-focused adherence intervention in patients with human immunodeficiency virus

    Directory of Open Access Journals (Sweden)

    Kekwaletswe CT

    2014-03-01

    Full Text Available Connie T Kekwaletswe,1 Neo K Morojele1,21Alcohol and Drug Abuse Research Unit, Medical Research Council, Pretoria, 2School of Public Health, University of the Witwatersrand, Johannesburg, South AfricaBackground: The primary objectives of this study were to determine the association between alcohol and antiretroviral therapy (ART adherence and the perceived appropriateness and acceptability of elements of an adherence counseling program with a focus on alcohol-related ART nonadherence among a sample of ART recipients in human immunodeficiency virus (HIV clinics in Tshwane, South Africa.Methods: We conducted a cross-sectional study with purposive sampling. The sample comprised 304 male and female ART recipients at two President's Emergency Plan For AIDS Relief-supported HIV clinics. Using an interview schedule, we assessed patients' alcohol use (Alcohol Use Disorders Identification Test, other drug use, level of adherence to ART, and reasons for missing ART doses (AIDS Clinical Trials Group adherence instrument. Additionally, patients’ views were solicited on: the likely effectiveness of potential facilitators; the preferred quantity, duration, format, and setting of the sessions; the usefulness of having family members/friends attend sessions along with the patient; and potential skill sets to be imparted.Results: About half of the male drinkers’ and three quarters of the female drinkers’ Alcohol Use Disorders Identification Test scores were suggestive of hazardous or harmful drinking. Average self-reported ART adherence was 89.7%. There was a significant association between level of alcohol use and degree of ART adherence. Overall, participants perceived two clinic-based sessions, each of one hour’s duration, in a group format, and facilitated by a peer or adherence counselor, as most appropriate and acceptable. Participants also had a favorable attitude towards family and friends accompanying them to the sessions. They also favored an

  6. Treatment adherence and quality of life in patients on antihypertensive medications in a Middle Eastern population: adherence

    Directory of Open Access Journals (Sweden)

    Alhaddad IA

    2016-10-01

    Full Text Available Imad A Alhaddad,1 Omar Hamoui,2 Ayman Hammoudeh,3 Samir Mallat4 1Cardiovascular Department, Jordan Hospital, Amman, Jordan; 2Cardiology Department, Clemenceau Medical Center, Beirut, Lebanon; 3Cardiology Department, Istishari Hospital, Amman, Jordan; 4Department of Internal Medicine, Nephrology Division, American University of Beirut Medical Center, Beirut, Lebanon Background: Poor adherence to antihypertensive treatment remains a clinical challenge worldwide. The objectives of this study were to assess the adherence level to antihypertensive treatment and to identify its associated factors in a sample of hypertensive patients in Lebanon and Jordan. Methods: We conducted an observational study between May 2011 and September 2012. A total of 1,470 eligible hypertensive patients were enrolled in our study and followed up for a period of 6 months. Data were collected regarding sociodemographic, health behavior, and hypertension-related characteristics. The adherence to treatment and the quality of life were self-reported using the Morisky, Green & Levine Scale and the Hypertension Quality of Life Questionnaire. Results: Our results revealed that 55.9 % of the patients were adherent to their antihypertensive medication. Older age was associated with better adherence, whereas being divorced or widowed, having a poorer quality of life, and being classified as having stage 1 or 2 hypertension at the end of the study were all associated with poorer adherence. Conclusion: Efforts should be exerted on all levels in order to increase the adherence to antihypertensive treatment through the implementation of educational campaigns. Keywords: adherence, NC 7 guidelines, Morisky, Green & Levine Scale, Hypertension Quality of Life Questionnaire, Lebanon, Jordan

  7. Pilot whales attracted to killer whale sounds: acoustically-mediated interspecific interactions in cetaceans.

    Directory of Open Access Journals (Sweden)

    Charlotte Curé

    Full Text Available In cetaceans' communities, interactions between individuals of different species are often observed in the wild. Yet, due to methodological and technical challenges very little is known about the mediation of these interactions and their effect on cetaceans' behavior. Killer whales (Orcinus orca are a highly vocal species and can be both food competitors and potential predators of many other cetaceans. Thus, the interception of their vocalizations by unintended cetacean receivers may be particularly important in mediating interspecific interactions. To address this hypothesis, we conducted playbacks of killer whale vocalizations recorded during herring-feeding activity to free-ranging long-finned pilot whales (Globicephala melas. Using a multi-sensor tag, we were able to track the whales and to monitor changes of their movements and social behavior in response to the playbacks. We demonstrated that the playback of killer whale sounds to pilot whales induced a clear increase in group size and a strong attraction of the animals towards the sound source. These findings provide the first experimental evidence that the interception of heterospecific vocalizations can mediate interactions between different cetacean species in previously unrecognized ways.

  8. Segmentation of Killer Whale Vocalizations Using the Hilbert-Huang Transform

    Directory of Open Access Journals (Sweden)

    Olivier Adam

    2008-08-01

    Full Text Available The study of cetacean vocalizations is usually based on spectrogram analysis. The feature extraction is obtained from 2D methods like the edge detection algorithm. Difficulties appear when signal-to-noise ratios are weak or when more than one vocalization is simultaneously emitted. This is the case for acoustic observations in a natural environment and especially for the killer whales which swim in groups. To resolve this problem, we propose the use of the Hilbert-Huang transform. First, we illustrate how few modes (5 are satisfactory for the analysis of these calls. Then, we detail our approach which consists of combining the modes for extracting the time-varying frequencies of the vocalizations. This combination takes advantage of one of the empirical mode decomposition properties which is that the successive IMFs represent the original data broken down into frequency components from highest to lowest frequency. To evaluate the performance, our method is first applied on the simulated chirp signals. This approach allows us to link one chirp to one mode. Then we apply it on real signals emitted by killer whales. The results confirm that this method is a favorable alternative for the automatic extraction of killer whale vocalizations.

  9. Current perspectives on natural killer cell education and tolerance: emerging roles for inhibitory receptors

    Directory of Open Access Journals (Sweden)

    Thomas LM

    2015-03-01

    Full Text Available L Michael Thomas Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA Abstract: Natural killer (NK cells are regulated through the coordinated functions of activating and inhibitory receptors. These receptors can act during the initial engagement of an NK cell with a target cell, or in subsequent NK cell engagements to maintain tolerance. Notably, each individual possesses a sizable minority-population of NK cells that are devoid of inhibitory receptors that recognize the surrounding MHC class I (ie, self-MHC. Since these NK cells cannot perform conventional inhibition, they are rendered less responsive through the process of NK cell education (also known as licensing in order to reduce the likelihood of auto-reactivity. This review will delineate current views on NK cell education, clarify various misconceptions about NK cell education, and, lastly, discuss the relevance of NK cell education in anti-cancer therapies. Keywords: natural killer cell education, natural killer cell inhibitory receptors, immunotherapy, cancer

  10. Reassessing "Jacob's case": a serial killer re-examined after ten years.

    Science.gov (United States)

    Kalian, M; Birger, M; Witztum, E

    2004-01-01

    The current study re-examines an exceptional case of a serial killer incarcerated since a decade ago. "Jacob" is the first serial killer apprehended in Israel. His known actions were committed during the eighties of the last century, and continued for eleven years. The victims were elderly individuals, including both his parents. Shortly after incarceration he became overtly schizophrenic and underwent five hospitalisations. The case is re-examined in view of changes, both in the perpetrator's diagnosis and criminal legislation. Was Jacob doomed to become a serial killer, or could his fate be avoided through early professional intervention? Were the killings presenting symptoms of a psychotic or pre-psychotic phase? Should he be eligible for a retrial? What would have been his position with the current law in view of the new 300A(a) clause ("Reduced Punishment") of the Israeli Criminal Code? Could he ever be released back to the community? These are some of the questions to be addressed.

  11. Cross-cultural and cross-ecotype production of a killer whale `excitement' call suggests universality

    Science.gov (United States)

    Rehn, Nicola; Filatova, Olga A.; Durban, John W.; Foote, Andrew D.

    2011-01-01

    Facial and vocal expressions of emotion have been found in a number of social mammal species and are thought to have evolved to aid social communication. There has been much debate about whether such signals are culturally inherited or are truly biologically innate. Evidence for the innateness of such signals can come from cross-cultural studies. Previous studies have identified a vocalisation (the V4 or `excitement' call) associated with high arousal behaviours in a population of killer whales in British Columbia, Canada. In this study, we compared recordings from three different socially and reproductively isolated ecotypes of killer whales, including five vocal clans of one ecotype, each clan having discrete culturally transmitted vocal traditions. The V4 call was found in recordings of each ecotype and each vocal clan. Nine independent observers reproduced our classification of the V4 call from each population with high inter-observer agreement. Our results suggest the V4 call may be universal in Pacific killer whale populations and that transmission of this call is independent of cultural tradition or ecotype. We argue that such universality is more consistent with an innate vocalisation than one acquired through social learning and may be linked to its apparent function of motivational expression.

  12. Killer Whale (Orcinus orca) Deaths in Prince William Sound, Alaska, 1985–1990

    Science.gov (United States)

    Fraker, Mark A.

    2013-01-01

    During 1985–1990, two groups of killer whales in Prince William Sound, Alaska, experienced unusually high rates of mortality, while seven others did not. Those affected were AB pod, part of the southern Alaska population of resident (fish-eating) killer whales, and the AT1 transient (marine mammal–eating) group, a very small, reproductively isolated population that last reproduced in 1984. In 1985–1986, several AB pod members were shot by fishermen defending their catch from depredation, which explains some of the deaths. Understanding the other deaths is complicated by the Exxon Valdez oil spill (March 1989) and uncertainties about the causes and times of the deaths. For AB pod, possible factors involved in the post-spill mortalities are delayed effects of bullet wounds, continued shooting, oil exposure, and consequences of being orphaned. For the AT1 group, possible factors are oil exposure, small population size, old age, and high-contaminant burdens. An analysis of possible effects of inhalation of volatile organic compounds, contact with the oil slick, and ingestion of oil with water or prey did not reveal route(s) of exposure that could explain the mortalities. The cause(s) of the killer whale deaths recorded following the oil spill remain uncertain. PMID:23335844

  13. Rat natural killer cell, T cell and macrophage functions after intracerebroventricular injection of SNC 80.

    Science.gov (United States)

    Nowak, J E; Gomez-Flores, R; Calderon, S N; Rice, K C; Weber, R J

    1998-08-01

    We investigated the effects of (+)-4-[(alpha R)-alpha-((2S, 5R)-4-allyl-2,5-dimethyl-1-piperazinyl)-3-methoxybenzyl]-N, N-diethylbenzamide (SNC 80), a nonpeptidic delta-opioid receptor-selective agonist, on rat leukocyte functions. Intracerebroventricular injection of SNC 80 (20 nmol) in Fischer 344N male rats did not affect splenic natural killer cell activity compared with intracerebroventricular saline-injected controls. SNC 80 also had no effect on concanavalin A-, anti-T cell receptor-, interleukin-2- and anti-T cell receptor + interleukin-2-induced splenic and thymic lymphocyte proliferation in most experiments. In some experiments, however, SNC 80 significantly (P SNC 80 did not significantly affect splenic T cell or natural killer cell populations as measured by the expression of T cell receptoralphabeta, and T helper (CD4), T suppressor/cytotoxic (CD8) and natural killer cell surface markers. Finally, SNC 80 did not affect interferon-gamma- or lipopolysaccharide (LPS)-induced splenic nitric oxide, and LPS-induced tumor necrosis factor-alpha production by splenic macrophages. These results suggest that SNC 80 could be useful in the treatment of pain without suppressing immune function. However, the potential immunoenhancing properties of SNC 80 may be also valuable in immunocompromised individuals.

  14. Evaluating adherence to ocular hypotensives using the Travatan dosing aid

    Directory of Open Access Journals (Sweden)

    O'Dell L

    2012-01-01

    Full Text Available Leslie O'Dell1, Amy L Hennessy2,3, Alan L Robin2–41May Eye Care Center, Hanover, PA, USA; 2Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; 3Glaucoma Specialists, Baltimore, MD, USA; 4Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, MD, USAPurpose: The Travatan™ Dosing Aid (TDA is the first commercially available device designed to aid in patients' adherence to their glaucoma therapies and to record patients' eyedrop administration, so that doctors can better assess adherence. No prior studies have objectively evaluated adherence to glaucoma medications and its relationship to the severity of glaucoma or the use of multiple systemic medications.Methods: We enrolled 100 consecutive subjects from a private glaucoma practice, all currently using topical travoprost 0.004%. Each subject was issued a TDA to record the time and date of each drop instilled. Informed consents were signed and the subjects were aware that their medication use was being monitored. Patients returned for follow-up 30–60 days after their initial exam.Results: 89 subjects completed the study: 44 were male, with a mean age of 67 years, and 69.7% were Caucasian. Overall, patient adherence was 74.8% (range 22%–100% improving to 85.4% on the day prior to follow-up. The mean number of missed doses per month was 6.24 ± 5.9. Only 7.9% of the study population never missed a dose and 23.6% ± 4.3% missed more than ten drops per month. No marked association was observed between the severity of glaucoma, race, or the number of systemic medications and adherence. A marked improvement in adherence was noted in patients using travoprost 0.004% as monocular therapy rather than binocular therapy, 84.0% ± 17.1% vs 67.4% ± 23.5% (P < 0.005.Conclusion: Patient adherence to glaucoma medical therapy is a major barrier in the management and treatment of glaucoma patients given the chronic nature and asymptomatic course of the disease. Until recently

  15. Cytokine-induced killer cells/dendritic cells and cytokine-induced killer cells immunotherapy for the treatment of esophageal cancer in China: a meta-analysis

    Science.gov (United States)

    Liu, Yan; Mu, Ying; Zhang, Anqi; Ren, Shaoda; Wang, Weihua; Xie, Jiaping; Zhang, Yingxin; Zhou, Changhui

    2017-01-01

    Background Immunotherapy based on cytokine-induced killer cells or combination of dendritic cells and cytokine-induced killer cells (CIK/DC-CIK) showed promising clinical outcomes for treating esophageal cancer (EC). However, the clinical benefit varies among previous studies. Therefore, it is necessary to systematically evaluate the curative efficacy and safety of CIK/DC-CIK immunotherapy as an adjuvant therapy for conventional therapeutic strategies in the treatment of EC. Materials and methods Clinical trials published before October 2016 and reporting CIK/DC-CIK immunotherapy treatment responses or safety for EC were searched in Cochrane Library, EMBASE, PubMed, Wanfang and China National Knowledge Internet databases. Research quality and heterogeneity were evaluated before analysis, and pooled analyses were performed using random- or fixed-effect models. Results This research covered 11 trials including 994 EC patients. Results of this meta-analysis indicated that compared with conventional therapy, the combination of conventional therapy with CIK/DC-CIK immunotherapy significantly prolonged the 1-year overall survival (OS) rate, overall response rate (ORR) and disease control rate (DCR) (1-year OS: P=0.0005; ORR and DCR: Pimmunotherapy, lymphocyte percentages of CD3+ and CD3−CD56+ subsets (P0.05). Conclusion The combination of CIK/DC-CIK immunotherapy and conventional therapy is safe and markedly prolongs survival time, enhances immune function and improves the treatment efficacy for EC.

  16. An exploration of factors influencing ambulance and emergency nurses protocol adherence in the Netherlands

    NARCIS (Netherlands)

    Ebben, Remco; Vloet, Lilian; Mintjes, Joke; Achterberg, Theo van

    2012-01-01

    Adherence to ambulance and ED protocols is often suboptimal. Insight into factors influencing adherence is a requisite for improvement of adherence. This study aims to gain an in-depth understanding of factors that influence ambulance and emergency nurses’ adherence to protocols.

  17. Factors influencing long-term adherence to two previously implemented hospital guidelines

    NARCIS (Netherlands)

    A.M. Knops; M.N. Storm-Versloot; A.P.M. Mank; D.T. Ubbink; H. Vermeulen; P.M.M. Bossuyt; A. Goossens

    2010-01-01

    After successful implementation, adherence to hospital guidelines should be sustained. Long-term adherence to two hospital guidelines was audited. The overall aim was to explore factors accounting for their long-term adherence or non-adherence. A fluid balance guideline (FBG) and body temperature gu

  18. The relationship between clinical outcomes and medication adherence in difficult-to-control asthma.

    Science.gov (United States)

    Murphy, Anna C; Proeschal, Amandine; Brightling, Christopher E; Wardlaw, Andrew J; Pavord, Ian; Bradding, Peter; Green, Ruth H

    2012-08-01

    Medication non-adherence and the clinical implications in difficult-to-control asthma were audited. Prescription issue data from 115 patients identified sub-optimal adherence (asthma (p=0.008). The majority of patients with difficult-to-control asthma are non-adherent with their asthma medication. Non-adherence is correlated with poor clinical outcomes.

  19. 76 FR 12969 - Campaign To Improve Poor Medication Adherence (U18)

    Science.gov (United States)

    2011-03-09

    ... HUMAN SERVICES Food and Drug Administration Campaign To Improve Poor Medication Adherence (U18) AGENCY... ] importance of good medication adherence, a vital first step toward improved adherence behavior and better...' awareness of the importance of good medication adherence and provide tools to prescribers to help...

  20. Impact of an exercise program on adherence and fitness indicators.

    Science.gov (United States)

    Carpenter, Roger; Gilleland, Diana

    2016-05-01

    Adherence to exercise is one of the most problematic health behaviors. This pilot study describes the impact of an exercise program on adherence to exercise and fitness indicators for overweight and obese adults enrolled in an insurance reimbursed exercise plan. Chart reviews were conducted retrospectively in a convenience sample of 77 subjects from a human performance lab (HPL) at a large southern university. Charts from 2004 to 2009 were reviewed for health history, fitness indicators (fitness level, weight, BMI, hip/waist ratio, % body fat, BP, HR, cholesterol), and adherence (number of exercise sessions/month). Exercise supervision was operationalized in two phases over 12 months: Phase I (3 months supervised exercise) and Phase II (9 months unsupervised exercise). Fifty-eight participants completed Phase I, and 8 completed Phase II. Six-nine percent of those completing Phase I visited the gym at least 8 times/month with significant (α=.05) improvement in all fitness indicators. Those visiting body fat. Twenty-four subjects continued into Phase II, with only eight completing Phase II. Of those eight, only one subject visited the HPL at least 8 times/month. Health history data including co-morbidities, symptoms, habits, perceived tension, job stress, and fitness level were not associated with adherence. Symptoms of swollen, stiff, painful joints, and swollen ankles and legs were associated with decreased adherence to exercise. Supervised exercise was positively related to adherence and improved fitness indicators. Adults with joint symptoms may require more support. Based on these pilot data, designing a study with a larger sample and the inclusion of barriers and facilitators for adherence to self-directed exercise would allow additional analysis. Innovative interventions are needed that mimic the supervised environment, shifting responsibility for the exercise plan from the supervisor to those exercising.

  1. Perceived barriers to guideline adherence: A survey among general practitioners

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    Besters Casper F

    2011-09-01

    Full Text Available Abstract Background Despite considerable efforts to promote and support guideline use, adherence is often suboptimal. Barriers to adherence vary not only across guidelines but also across recommendations within guidelines. The aim of this study was to assess the perceived barriers to guideline adherence among GPs by focusing on key recommendations within guidelines. Methods We conducted a cross-sectional electronic survey among 703 GPs in the Netherlands. Sixteen key recommendations were derived from four national guidelines. Six statements were included to address the attitudes towards guidelines in general. In addition, GPs were asked to rate their perceived adherence (one statement and the perceived barriers (fourteen statements for each of the key recommendations, based on an existing framework. Results 264 GPs (38% completed the questionnaire. Although 35% of the GPs reported difficulties in changing routines and habits to follow guidelines, 89% believed that following guidelines leads to improved patient care. Perceived adherence varied between 52 and 95% across recommendations (mean: 77%. The most perceived barriers were related to external factors, in particular patient ability and behaviour (mean: 30% and patient preferences (mean: 23%. Lack of applicability of recommendations in general (mean: 22% and more specifically to individual patients (mean: 25% were also frequently perceived as barriers. The scores on perceived barriers differed largely between recommendations [minimum range 14%; maximum range 67%]. Conclusions Dutch GPs have a positive attitude towards the NHG guidelines, report high adherence rates and low levels of perceived barriers. However, the perceived adherence and perceived barriers varied largely across recommendations. The most perceived barriers across recommendations are patient related, suggesting that current guidelines do not always adequately incorporate patient preferences, needs and abilities. It may be

  2. Adherence to the Mediterranean dietary pattern among Balearic Islands adolescents.

    Science.gov (United States)

    Martínez, Elisa; Llull, Rosa; Del Mar Bibiloni, Maria; Pons, Antoni; Tur, Josep A

    2010-06-01

    The aim of the present work was to assess the prevalence of the Mediterranean dietary pattern (MDP) in Balearic Islands adolescents, and socio-demographic and lifestyle factors that might determine adherence to the MDP. A cross-sectional nutritional survey was carried out in the Balearic Islands between 2007 and 2008. A random sample (n 1231) of the adolescent population (12-17 years old) was interviewed. Dietary questionnaires and a general questionnaire incorporating questions related to socio-economic status, parental education level and lifestyle factors were used. Dietary habits were assessed by means of two 24 h recalls and a quantitative FFQ. Adherence to the MDP was defined according to a score constructed considering the consumption of nine MDP characteristic components: high MUFA:SFA ratio, moderate ethanol consumption, high legumes, cereals and roots, fruits, vegetables and fish consumption, and low consumption of meat and milk. Then, socio-demographic, lifestyle and health status variables that could determine a higher or ower adherence were assessed. The mean adherence was 57.9 (sd 8.9) % and the median adherence was 57.3 %. Half of the Balearic Islands adolescents (50.5 %) showed an adherence to the MDP comprised between 52.7 and 62.8 %. By multivariate analyses, a high maternal level of education, increased physical activity, reduced alcohol intake and abstinence from smoking were independent associations of better adherence to the MDP. The promotion of not only the MDP but also the Mediterranean lifestyle, including greater physical activity, should be reinforced among the Balearic younger generations.

  3. Factors associated with suboptimal adherence to antiretroviral therapy in Asia

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    Awachana Jiamsakul

    2014-05-01

    Full Text Available Introduction: Adherence to antiretroviral therapy (ART plays an important role in treatment outcomes. It is crucial to identify factors influencing adherence in order to optimize treatment responses. The aim of this study was to assess the rates of, and factors associated with, suboptimal adherence (SubAdh in the first 24 months of ART in an Asian HIV cohort. Methods: As part of a prospective resistance monitoring study, the TREAT Asia Studies to Evaluate Resistance Monitoring Study (TASER-M collected patients’ adherence based on the World Health Organization-validated Adherence Visual Analogue Scale. SubAdh was defined in two ways: (i 14 days. Time was divided into four intervals: 0–6, 6–12, 12–18 and 18–24 months. Factors associated with SubAdh were analysed using generalized estimating equations. Results: Out of 1316 patients, 32% ever reported 2 assessments per patient per year had an odds ratio (OR=0.7 (95% confidence interval (CI (0.55 to 0.90, p=0.006, compared to sites with ≤2 assessments per patient per year. Compared to heterosexual exposure, SubAdh was higher in injecting drug users (IDUs (OR=1.92, 95% CI (1.23 to 3.00, p=0.004 and lower in homosexual exposure (OR=0.52, 95% CI (0.38 to 0.71, p<0.001. Patients taking a nucleoside transcriptase inhibitor and protease inhibitor (NRTI+PI combination were less likely to report adherence <100% (OR=0.36, 95% CI (0.20 to 0.67, p=0.001 compared to patients taking an NRTI and non-nucleoside transcriptase inhibitor (NRTI+NNRTI combination. SubAdh decreased with increasing time on ART (all p<0.001. Similar associations were found with adherence <95% as the outcome. Conclusions: We found that SubAdh, defined as either <100% and <95%, was associated with mode of HIV exposure, ART regimen, time on ART and frequency of adherence measurement. The more frequently sites assessed patients, the lower the SubAdh, possibly reflecting site resourcing for patient counselling. Although social

  4. Approaches to improve adherence to pharmacotherapy in patients with schizophrenia

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    Shuler KM

    2014-05-01

    Full Text Available Kimberly M Shuler Shuler Counseling and Consulting, Fayetteville, AR, USA Purpose: In patients with schizophrenia, nonadherence to prescribed medications increases the risk of patient relapse and hospitalization, key contributors to the costs associated with treatment. The objectives of this review were to evaluate the impact of nonadherence to pharmacotherapy in patients with schizophrenia as it relates to health care professionals, particularly social workers, and to identify effective team approaches to supporting patients based on studies assessing implementation of assertive community treatment teams. Materials and methods: A systematic review of the medical literature was conducted by searching the Scopus database to identify articles associated with treatment adherence in patients with schizophrenia. Articles included were published from January 1, 2003, through July 15, 2013, were written in English, and reported findings concerning any and all aspects of nonadherence to prescribed treatment in patients with schizophrenia. Results: Of 92 unique articles identified and formally screened, 47 met the inclusion criteria for the systematic review. The burden of nonadherence in schizophrenia is significant. Factors with the potential to affect adherence include antipsychotic drug class and formulation, patient-specific factors, and family/social support system. There is inconclusive evidence suggesting superior adherence with an atypical versus typical antipsychotic or with a long-acting injectable versus an oral formulation. Patient-specific factors that contribute to adherence include awareness/denial of illness, cognitive issues, stigma associated with taking medication, substance abuse, access to health care, employment/poverty, and insurance status. Lack of social or family support may adversely affect adherence, necessitating the assistance of health care professionals, such as social workers. Evidence supports the concept that an

  5. Value-based insurance design yields near- and long-term improvements in medication adherence.

    Science.gov (United States)

    Collado, Megan

    2013-03-01

    Key findings. (1) Value-based insurance design (VBID) improves medication adherence by 1 to 3 percent in the first year after implementation; (2) Improvements in adherence were sustained and amplified in the second year post-implementation, ranging from 2 to 5 percent; (3) Adherence improvements varied ac­cording to VBID participants' baseline adherence, with greatest improve­ments evident in those with poorer baseline adherence

  6. Adherence with tobramycin inhaled solution and health care utilization

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    Sacco Patricia

    2011-01-01

    Full Text Available Abstract Background Adherence with tobramycin inhalation solution (TIS during routine cystic fibrosis (CF care may differ from recommended guidelines and affect health care utilization. Methods We analyzed 2001-2006 healthcare claims data from 45 large employers. Study subjects had diagnoses of CF and at least 1 prescription for TIS. We measured adherence as the number of TIS therapy cycles completed during the year and categorized overall adherence as: low ≤ 2 cycles, medium >2 to Results Among 804 individuals identified with CF and a prescription for TIS, only 7% (n = 54 received ≥ 4 cycles of TIS per year. High adherence with TIS was associated with a decreased risk of hospitalization when compared to individuals receiving ≤ 2 cycles (adjusted odds ratio 0.40; 95% confidence interval 0.19-0.84. High adherence with TIS was also associated with lower outpatient service costs (IQR: $2,159-$8444 vs. $2,410-$14,423 and higher outpatient prescription drug costs (IQR: $35,125-$60,969 vs. $10,353-$46,768. Conclusions Use of TIS did not reflect recommended guidelines and may impact other health care utilization.

  7. Determinants of CPAP Adherence in Hispanics with Obstructive Sleep Apnea

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    Montserrat Diaz-Abad

    2014-01-01

    Full Text Available Purpose. We hypothesized that socioeconomic factors and a language barrier would impact adherence with continuous positive airway pressure (CPAP among Hispanics with obstructive sleep apnea (OSA. Methods. Patients with OSA who were prescribed CPAP for at least 1 year and completed a questionnaire evaluating demographic data, socioeconomic status, and CPAP knowledge and adherence participated in the study. Results. Seventy-nine patients (26 males; 53±11 yrs; body mass index (BMI=45±9 kg/m2 with apnea-hypopnea index (AHI 33±30 events/hr completed the study. Included were 25 Hispanics, 39 African Americans, and 15 Caucasians, with no difference in age, AHI, CPAP use, or BMI between the groups. While there was a difference in educational level (P=0.006, income level (P<0.001, and employment status (P=0.03 between the groups, these did not influence CPAP adherence. Instead, overall improvement in quality of life and health status and perceived benefit from CPAP influenced adherence, both for the group as a whole (P=0.03, P=0.004, and P=0.001, resp., as well as in Hispanics (P=0.02, P=0.02, P=0.03, resp.. Conclusion. In Hispanic patients with OSA, perceived benefit with therapy, rather than socioeconomic status or a language barrier, appears to be the most important factor in determining CPAP adherence.

  8. Bacterial adherence to SiO2-based multifunctional bioceramics.

    Science.gov (United States)

    Kinnari, Teemu J; Esteban, Jaime; Gomez-Barrena, Enrique; Zamora, Nieves; Fernandez-Roblas, Ricardo; Nieto, Alejandra; Doadrio, Juan C; López-Noriega, Adolfo; Ruiz-Hernández, Eduardo; Arcos, Daniel; Vallet-Regí, María

    2009-04-01

    The bacterial adherence onto different multifunctional silica-based bioceramics has been evaluated. Staphylococcus aureus and Staphylococcus epidermidis were chosen, as they cause the majority of the implant-related infections in this field. Two SiO2 mesoporous materials (MCM-41, SBA-15), an ordered SiO2-CaO-P2O5 mesoporous glass (OMG), and a biphasic magnetic bioceramic (BMB), were incubated with S. aureus and S. epidermidis for 90 min, and subsequently sonicated to quantify the number of adhered bacteria on each material. It was found that S. aureus and S. epidermidis (10(8) CFU/mL) adhered significantly less to BMB samples when compared to MCM-41, SBA-15, or OMG. However, when the material pores accessible for bacteria in each material were taken into account, the lowest bacterial adherence was found in MCM-41, and the highest in SBA-15. The results show that bacterial adherence is higher on mesoporous bioceramics, although this higher microbial attachment is mainly due to the intergranular porosity and grain size morphology rather than to the mesoporous structure.

  9. Improving patient outcomes in psoriasis: strategies to ensure treatment adherence

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    Yélamos O

    2015-07-01

    Full Text Available Oriol Yélamos, Sandra Ros, Lluís Puig Department of Dermatology, Hospital de la Santa Creu i Sant Pau – Universitat Autònoma de Barcelona, Barcelona, Catalonia, Spain Abstract: Psoriasis is a frequent inflammatory disease with a chronic and relapsing course. Therefore, patients with psoriasis are likely to undergo different treatments for long periods of time. Traditionally, therapies used in psoriasis have been associated with poor levels of adherence due to the complexity of the regimens and the poor results obtained with the topical therapies. These poor outcomes are associated with high levels of frustration and anxiety, which decrease adherence and worsen the disease. With the recent introduction of highly efficacious biologic therapies, patients can achieve very good and prolonged responses. However, most patients with psoriasis have mild disease and may be treated with skin-directed therapies. Therefore, it is important to develop strategies to improve adherence in order to achieve better outcomes, and to improve the overall quality of life. Hence, acknowledging the causes of nonadherence is crucial for implementing these strategies. In this summary, we review the causes of nonadherence, and we provide behavioral strategies in order to improve adherence and, ultimately, the outcome of patients with psoriasis. Keywords: psoriasis, adherence, outcome, drug therapy, psychotherapy

  10. The therapeutic relationship and adherence to antipsychotic medication in schizophrenia.

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    Rosemarie McCabe

    Full Text Available OBJECTIVE: Previous research has shown that a better therapeutic relationship (TR predicts more positive attitudes towards antipsychotic medication, but did not address whether it is also linked with actual adherence. This study investigated whether the TR is associated with adherence to antipsychotics in patients with schizophrenia. METHODS: 134 clinicians and 507 of their patients with schizophrenia or a related psychotic disorder participated in a European multi-centre study. A logistic regression model examined how the TR as rated by patients and by clinicians is associated with medication adherence, adjusting for clinician clustering and symptom severity. RESULTS: Patient and clinician ratings of the TR were weakly inter-correlated (r(s = 0.13, p = 0.004, but each was independently linked with better adherence. After adjusting for patient rated TR and symptom severity, each unit increase in clinician rated TR was associated with an increase of the odds ratio of good compliance by 65.9% (95% CI: 34.6% to 104.5%. After adjusting for clinician rated TR and symptom severity, for each unit increase in patient rated TR the odds ratio of good compliance was increased by 20.8% (95% CI: 4.4% to 39.8%. CONCLUSIONS: A better TR is associated with better adherence to medication among patients with schizophrenia. Patients' and clinicians' perspectives of the TR are both important, but may reflect distinct aspects.

  11. Sonoporation of adherent cells under regulated ultrasound cavitation conditions.

    Science.gov (United States)

    Muleki Seya, Pauline; Fouqueray, Manuela; Ngo, Jacqueline; Poizat, Adrien; Inserra, Claude; Béra, Jean-Christophe

    2015-04-01

    A sonoporation device dedicated to the adherent cell monolayer has been implemented with a regulation process allowing the real-time monitoring and control of inertial cavitation activity. Use of the cavitation-regulated device revealed first that adherent cell sonoporation efficiency is related to inertial cavitation activity, without inducing additional cell mortality. Reproducibility is enhanced for the highest sonoporation rates (up to 17%); sonoporation efficiency can reach 26% when advantage is taken of the standing wave acoustic configuration by applying a frequency sweep with ultrasound frequency tuned to the modal acoustic modes of the cavity. This device allows sonoporation of adherent and suspended cells, and the use of regulation allows some environmental parameters such as the temperature of the medium to be overcome, resulting in the possibility of cell sonoporation even at ambient temperature.

  12. Decisional capacity and medication adherence among youth with HIV.

    Science.gov (United States)

    Chenneville, Tiffany; Clutter, Michiko Otsuki; Hintz, Stephanie; Walsh, Audra; Emmanuel, Patricia; Lujan-Zilberman, Jorge; Rodriguez, Carina

    2015-01-01

    This exploratory study examined the degree to which decisional capacity (DC) is associated with measures of self-reported medication adherence. We hypothesized that youth with higher levels of DC would report greater levels of antiretroviral medication adherence. Seventy-two (72) youth with HIV aged 13-24 participated in this study. Data collection included administration of the MacArthur Competence Tool for Treatment and measures of adherence (i.e., seven-day self-report interview, visual analog scale, and biological indicators). Data were analyzed using descriptive statistics, intercorrelations, and multiple and Poisson regression analyses. Youth with HIV who exhibited greater understanding of their disease were more likely to report fewer missed doses in the last seven days. Findings build upon literature in the areas of DC and health literacy and highlight the potential utility of enhancing HIV disease understanding among youth with HIV.

  13. Bridging the gap between antiretroviral access and adherence in Mexico.

    Science.gov (United States)

    Campero, Lourdes; Herrera, Cristina; Kendall, Tamil; Caballero, Marta

    2007-05-01

    The goal in this article is to examine social problems associated with highly active antiretroviral therapy (HAART) adherence in Mexico and the related challenges for Mexican persons living with HIV/AIDS (PLWHAs). The study was conducted from the perspective of infected and affected individuals. The authors completed 64 in-depth interviews with heterosexual male and female PLWHAs, as well as with some key individuals from their social network. Following the principles of grounded theory, they carried out inductive analysis to create codes and organize central themes. The authors identified problems related to accessing HAART and found that conditions for implementing recommendations made in the international literature to improve adherence are poor. The findings highlight the importance of social factors, such as health care system irregularities, ineffective physician-patient communication, and availability of family and other sources of social support such as self-help groups for PLWHAs' access and adherence to antiretroviral therapy in Mexico.

  14. Stick to your gums: mechanisms of oral microbial adherence.

    Science.gov (United States)

    Nobbs, A H; Jenkinson, H F; Jakubovics, N S

    2011-11-01

    Studies on the adherence properties of oral bacteria have been a major focus in microbiology research for several decades. The ability of bacteria to adhere to the variety of surfaces present in the oral cavity, and to become integrated within the resident microbial communities, confers growth and survival properties. Molecular analyses have revealed several families of Gram-positive bacterial surface proteins, including serine-rich repeat, antigen I/II, and pilus families, that mediate adherence to a variety of salivary and oral bacterial receptors. In Gram-negative bacteria, pili, auto-transporters, and extracellular matrix-binding proteins provide components for host tissue recognition and building of complex microbial communities. Future studies will reveal in greater detail the binding pockets for these adhesin families and their receptors. This information will be crucial for the development of new inhibitors or vaccines that target the functional regions of bacterial proteins that are involved in colonization and pathogenesis.

  15. Using mixed inocula of Saccharomyces cerevisiae killer strains to improve the quality of traditional sparkling-wine.

    Science.gov (United States)

    Velázquez, Rocío; Zamora, Emiliano; Álvarez, Manuel; Álvarez, María L; Ramírez, Manuel

    2016-10-01

    The quality of traditional sparkling-wine depends on the aging process in the presence of dead yeast cells. These cells undergo a slow autolysis process thereby releasing some compounds, mostly colloidal polymers such as polysaccharides and mannoproteins, which influence the wine's foam properties and mouthfeel. Saccharomyces cerevisiae killer yeasts were tested to increase cell death and autolysis during mixed-yeast-inoculated second fermentation and aging. These yeasts killed sensitive strains in killer plate assays done under conditions of low pH and temperature similar to those used in sparkling-wine making, although some strains showed a different killer behaviour during the second fermentation. The fast killer effect improved the foam quality and mouthfeel of the mixed-inoculated wines, while the slow killer effect gave small improvements over single-inoculated wines. The effect was faster under high-pressure than under low-pressure conditions. Wine quality improvement did not correlate with the polysaccharide, protein, mannan, or aromatic compound concentrations, suggesting that the mouthfeel and foaming quality of sparkling wine are very complex properties influenced by other wine compounds and their interactions, as well as probably by the specific chemical composition of a given wine.

  16. Association of Continuity of Primary Care and Statin Adherence.

    Directory of Open Access Journals (Sweden)

    James R Warren

    Full Text Available Deficiencies in medication adherence are a major barrier to effectiveness of chronic condition management. Continuity of primary care may promote adherence. We assessed the association of continuity of primary care with adherence to long-term medication as exemplified by statins.We linked data from a prospective study of 267,091 Australians aged 45 years and over to national data sets on prescription reimbursements, general practice claims, hospitalisations and deaths. For participants having a statin dispense within 90 days of study entry, we computed medication possession ratio (MPR and usual provider continuity index (UPI for the subsequent two years. We used multivariate Poisson regression to calculate the relative risk (RR and 95% confidence interval (CI for the association between tertiles of UPI and MPR adjusted for socio-demographic and health-related patient factors, including age, gender, remoteness of residence, smoking, alcohol intake, fruit and vegetable intake, physical activity, prior heart disease and speaking a language other than English at home. We performed a comparison approach using propensity score matching on a subset of the sample.36,144 participants were eligible and included in the analysis among whom 58% had UPI greater than 75%. UPI was significantly associated with 5% increased MPR for statin adherence (95% CI 1.04-1.06 for highest versus lowest tertile. Dichotomised analysis using a cut-off of UPI at 75% showed a similar effect size. The association between UPI and statin adherence was independent of socio-demographic and health-related factors. Stratification analyses further showed a stronger association among those who were new to statins (RR 1.33, 95% CI 1.15-1.54.Greater continuity of care has a positive association with medication adherence for statins which is independent of socio-demographic and health-related factors.

  17. Characteristics of HIV antiretroviral regimen and treatment adherence

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    Vera Lúcia da Silveira

    2003-06-01

    Full Text Available The relationship between characteristics of HIV antiretroviral regimens and treatment adherence was studied in adolescent and adult patients who underwent antiretroviral therapy from January 1998 to September 2000, at the Service for Specialized Assistance in Pelotas. The patients were interviewed on two occasions, and the use of antiretrovirals during the previous 48 hours was investigated by a self-report. Adherence was defined as use of 95% or more of the prescribed medication. Social-demographic variables were collected through direct questionnaires. The antiretroviral regimen and clinical data were copied from the patients' records. Associations between the independent variables and adherence were analyzed by means of logistic regression. The multivariate analysis included characteristics of the antiretroviral regimens, social-demographic variables, as well as perception of negative effects, negative physiological states, and adverse effects of the treatment. Among the 224 selected patients, 194 participated in our study. Their ages varied from 17 to 67 years; most patients were men, with few years of schooling and a low family income. Only 49% adhered to the treatment. Adherence to treatment regimens was reduced when more daily doses were indicated: three to four doses (odds ratio of adherence to treatment (OR=0.47, 95% confidence interval (CI 0.22-1.01 and five to six (OR=0.24, 95% CI 0.09-0.62; two or more doses taken in a fasting state (OR=0.59, 95% CI 0.11-0.68, and for patients who reported adverse effects to the treatment (OR=0.39, 95% CI 0.19-0.77. Most of the regimens with more than two daily doses of medication included at least one dose apart from mealtimes. The results suggest that, if possible, regimens with a reduced number of doses should be chosen, with no compulsory fasting, and with few adverse effects. Strategies to minimize these effects should be discussed with the patients.

  18. Adherence and neurocognitive screening in Romanian HIV patients

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    M Arbune

    2012-11-01

    Full Text Available Background: Adherence is critical for the effectiveness of antiretroviral HIV therapy (ART, accordingly decreasing the opportunistic diseases and increasing the quality of life. Neurocognitive disorders (NCD are still frequent in ART era and could impair the adherence, but how ethical is to refer ART in patients with NCD? Objective: To assess the relation between NCD and adherence in HIV Romanian patients. Material and methods: Cross-sectional screening study on 151 patients under ART, no drug users, from HIV Clinic - Galati, assessed by HIV-Associated Dementia Scale (HDS, Hospital Anxiety and Depression Scale (HADS [1], ART CNS-effectiveness Letendre scores [2] and adherence assessment questionnaire CNLAS- Romania. Normal values: HDS >10; anxiety/ depression <8. Statistical analysis performed: Chi-square test and Mann-Whitney test, with 5% significance level. Results: Characteristics of the patients: median age 22 [20; 56] years old; sex ratio F/M 1.17; median educational level 8 [0; >12] years; HBV co-infection 27.8%; AIDS stage 85.3%; current median CD4 526/mm3 [8; 1605] and 65% undetectable HIV-RNA levels. 49.6% (75/151 patients attain HDS scores <10 and imply probable NCD. Scores below 8 for anxiety are more frequent than for depression: 24% vs 13%. The median ART CNS penetration score is 8 [5; 12]. Adherence is considered for 66% patients and is correlating with CD4 number (p=0.001, educational level >4 years (p=0.001; OR=4.2, HDS >10 (p=0.01; OR=2.4 and ART-CNS penetration score >7 (p=0.023; OR=2.4. Low HDS are influenced by old age (p=0.003, depression (p=0.02 and ART-CNS penetration scores <7 (p=0.01. Anxiety is related neither with adherence nor with NCD by HDS, but females are obvious anxious than males (p<0.001. Conclusions: Basic educational level is sufficient for developing ART adherence. High scores of HDS screening should be predictors for ART adherence. Referring ART as well to patients with low HDS scores is rational and

  19. Treating depression in HIV-positive patients affects adherence

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    M Y H Moosa

    2012-09-01

    Full Text Available Aim. To determine changes in adherence to antiretroviral therapy (ART in HIV-positive patients with depression, following treatment with an antidepressant or psychotherapy. Methods. The study was prospective, randomised and controlled. Consenting volunteers aged ≥18 years and stable on ART for ≥6 months were included in the study. Sociodemographic data were obtained, and a clinical diagnostic evaluation and the Hamilton Depression rating scale (HAMD were performed on all subjects at entry to and at the end of the study. Participants found to be depressed were randomly assigned antidepressant treatment (20 mg citalopram or interpersonal psychotherapy (IPT (5 sessions. Medication was dispensed at each visit and patients were asked to return all unused medication to determine ART adherence. The study was approved by the University of the Witwatersrand. Results. Sixty-two HIV-positive persons receiving ART participated; 30 were not depressed (control group and 32 were depressed (patient group. No significant differences in demographic characteristics existed between the control and patient groups. Mean ART adherence at the start of the study was 99.5% (standard error (SE ±0.46 and 92.1% (SE ±1.69 in the control and patients groups, respectively. Mean ART adherence at the end of the study changed marginally in the control group (99.7%; SE ±0.46 and increased significantly in the patient group (99.5%; SE± 0.13 (p>0.05. The mean ART adherence rate of patients who received pharmacotherapy increased from 92.8% to 99.5%, and of those who received psychotherapy increased from 91.1% to 99.6% (p>0.05. There was no significant association between the increased adherence in the patient group and baseline demographic and clinical characteristics, irrespective of antidepressant therapy or IPT (p>0.05. Conclusion. Successful treatment of depression with an antidepressant or psychotherapy was associated with improved ART adherence, independent of the type

  20. Promoting adherence to nebulized therapy in cystic fibrosis: poster development and a qualitative exploration of adherence

    Directory of Open Access Journals (Sweden)

    Jones S

    2015-08-01

    Full Text Available Stephen Jones,1 Nathan Babiker,2 Emma Gardner,2,3 Jane Royle,2 Rachael Curley,3,4 Zhe Hui Hoo,3,4 Martin J Wildman3,4 1Psychology Department, University of Sheffield, 2Psychological Services, Sheffield Teaching Hospitals NHS Foundation Trust, 3Adult Cystic Fibrosis Unit, Northern General Hospital, 4School of Health and Related Research (ScHARR, University of Sheffield, Sheffield, UK Background: Cystic fibrosis (CF health care professionals recognize the need to motivate people with CF to adhere to nebulizer treatments, yet little is known about how best to achieve this. We aimed to produce motivational posters to support nebulizer adherence by using social marketing involving people with CF in the development of those posters. Methods: The Sheffield CF multidisciplinary team produced preliminary ideas that were elaborated upon with semi-structured interviews among people with CF to explore barriers and facilitators to the use of nebulized therapy. Initial themes and poster designs were refined using an online focus group to finalize the poster designs. Results: People with CF preferred aspirational posters describing what could be achieved through adherence in contrast to posters that highlighted the adverse consequences of nonadherence. A total of 14 posters were produced through this process. Conclusion: People with CF can be engaged to develop promotional material to support adherence, providing a unique perspective differing from that of the CF multidisciplinary team. Further research is needed to evaluate the effectiveness of these posters to support nebulizer adherence. Keywords: behavior change, social marketing, patient participation, nebulizers, medication adherence

  1. Identification of the ancestral killer immunoglobulin-like receptor gene in primates

    Directory of Open Access Journals (Sweden)

    Coggill Penny

    2006-08-01

    Full Text Available Abstract Background Killer Immunoglobulin-like Receptors (KIR are essential immuno-surveillance molecules. They are expressed on natural killer and T cells, and interact with human leukocyte antigens. KIR genes are highly polymorphic and contribute vital variability to our immune system. Numerous KIR genes, belonging to five distinct lineages, have been identified in all primates examined thus far and shown to be rapidly evolving. Since few KIR remain orthologous between species, with only one of them, KIR2DL4, shown to be common to human, apes and monkeys, the evolution of the KIR gene family in primates remains unclear. Results Using comparative analyses, we have identified the ancestral KIR lineage (provisionally named KIR3DL0 in primates. We show KIR3DL0 to be highly conserved with the identification of orthologues in human (Homo sapiens, common chimpanzee (Pan troglodytes, gorilla (Gorilla gorilla, rhesus monkey (Macaca mulatta and common marmoset (Callithrix jacchus. We predict KIR3DL0 to encode a functional molecule in all primates by demonstrating expression in human, chimpanzee and rhesus monkey. Using the rhesus monkey as a model, we further show the expression profile to be typical of KIR by quantitative measurement of KIR3DL0 from an enriched population of natural killer cells. Conclusion One reason why KIR3DL0 may have escaped discovery for so long is that, in human, it maps in between two related leukocyte immunoglobulin-like receptor clusters outside the known KIR gene cluster on Chromosome 19. Based on genomic, cDNA, expression and phylogenetic data, we report a novel lineage of immunoglobulin receptors belonging to the KIR family, which is highly conserved throughout 50 million years of primate evolution.

  2. M by Fritz Lang (Germany, 1931) Phenomenology of Evil: a serial killer and his social group.

    Science.gov (United States)

    Secchi, Cesare

    2015-10-01

    In 1931 an unknown murderer of little girls (Peter Lorre) is terrorizing the city of Berlin. We see him entice a new victim, the little Elsie Beckmann, who is coming home from school: whistling a tune by Grieg, he buys her a balloon from a blind beggar. When her corpse is discovered, the police undertake a major mobilization aimed at seeking the serial killer in the criminal underworld; meanwhile, the ever more terrified population starts to see the dangerous murderer in everyone. Since the roundups and incursions into the seediest parts of town disturb the gangsters' activities, the leaders of organized crime, headed by Schränker (Gustav Gründgens), take it upon themselves also to hunt down the solitary child-killer, engaging the community of beggars. Every corner of the city is catalogued and sifted by the dual activity of the police and the gangsters. The 'monster', a former psychiatric patient, mild and harmless in manner, is finally tracked down via two parallel routes: the clue of a cigarette packet enables Inspector Lohmann (Otto Wernicke) to track down the serial killer's address, while the blind beggar recognizes the whistled tune. The murderer is identified by a 'slap' from a young criminal which leaves an M marked in chalk on a shoulder of the man's overcoat. Thus he is caught and undergoes a kind of trial at the hands of the gangsters who tie him up in order to lynch him, but they are interrupted by the arrival of the forces of law and order.

  3. An extranuclear expression system for analysis of cytoplasmic promoters of yeast linear killer plasmids.

    Science.gov (United States)

    Schründer, J; Meinhardt, F

    1995-03-01

    Based on the cytoplasmically localized killer plasmids pGKL1 and pGKL2 of Kluyveromyces lactis two new linear hybrid plasmids were constructed which consist of pGKL1, into which in addition to the previously developed cytoplasmically expressible LEU2* selectable marker a glucose dehydrogenase-encoding bacterial gene (gdh A) has been integrated. One of the hybrid plasmids carries the bacterial gene preceded by an arbitrarily placed cytoplasmic promoter (upstream conserved sequence) in front of the coding region (pRKL121). The other plasmid was constructed in such a way that the ATG start codon of the gdh A gene was fused in frame to the ATG start codon of the killer plasmid's open reading frame 5 (pRKL122). The structures of both linear hybrid plasmids were confirmed by restriction analysis, Southern hybridization, and sequencing of the junction sites. Yeast strains carrying either of the plasmids expressed the glucose dehydrogenase gene; however, expression of the in phase fused gene was 40-fold higher compared to the arbitrarily placed cytoplasmic promoter. In general, an in phase fusion was not required for expression, but efficiency is dramatically enhanced when the 5' noncoding sequences in front of the heterologous genes are the same as those found on the native killer plasmids. The developed system can serve as a reporter for determining the efficiency of the different cytoplasmic promoters present on both linear plasmids. Hybrid plasmids were stably maintained without selective pressure in K. lactis and they were transferred and expressed also in Saccharomyces cerevisiae.

  4. The structure of stereotyped calls reflects kinship and social affiliation in resident killer whales ( Orcinus orca)

    Science.gov (United States)

    Deecke, Volker B.; Barrett-Lennard, Lance G.; Spong, Paul; Ford, John K. B.

    2010-05-01

    A few species of mammals produce group-specific vocalisations that are passed on by learning, but the function of learned vocal variation remains poorly understood. Resident killer whales live in stable matrilineal groups with repertoires of seven to 17 stereotyped call types. Some types are shared among matrilines, but their structure typically shows matriline-specific differences. Our objective was to analyse calls of nine killer whale matrilines in British Columbia to test whether call similarity primarily reflects social or genetic relationships. Recordings were made in 1985-1995 in the presence of focal matrilines that were either alone or with groups with non-overlapping repertoires. We used neural network discrimination performance to measure the similarity of call types produced by different matrilines and determined matriline association rates from 757 encounters with one or more focal matrilines. Relatedness was measured by comparing variation at 11 microsatellite loci for the oldest female in each group. Call similarity was positively correlated with association rates for two of the three call types analysed. Similarity of the N4 call type was also correlated with matriarch relatedness. No relationship between relatedness and association frequency was detected. These results show that call structure reflects relatedness and social affiliation, but not because related groups spend more time together. Instead, call structure appears to play a role in kin recognition and shapes the association behaviour of killer whale groups. Our results therefore support the hypothesis that increasing social complexity plays a role in the evolution of learned vocalisations in some mammalian species.

  5. A systematic review of medication non-adherence in persons with dementia or cognitive impairment

    Science.gov (United States)

    Weller, Carolina; Kennedy, Briohny; Winbolt, Margaret; Young, Carmel

    2017-01-01

    Background Adherence to medication is vital for disease management while simultaneously reducing healthcare expenditure. Older persons with cognitive impairment (CI) are at risk for non-adherence as cognitive processes are needed to manage medications. This systematic review focuses on the relationship between medication non-adherence and specific cognitive domains in persons with CI, and explores determinants of medication non-adherence. When available, relationships and factors are compared with cognitively intact populations. Methods A seven database systematic search of studies published between 1 January 1949–31 December 2015 examining medication non-adherence in community dwelling persons with CI or dementia was conducted. Articles reporting medication non-adherence in people with CI or dementia in the community, with or without caregiver supports were eligible for inclusion. Papers reporting adherence to treatments in cognitively intact populations, populations from hospital or institutional settings, for non-prescribed medication or those describing dementia as a factor predicting medication non-adherence were excluded. Data on study and population characteristics, research design, data sources and analysis, specific cognitive domains, non-adherence prevalence, measurement of adherence, salient findings, factors associated with adherence and strategies to improve medication adherence were extracted. Study limitations included inconsistencies between data sources and definitions, resulting in a loss of fidelity in the value and comprehensiveness of data, as well as exclusion of non-pharmacological treatments and regimens. Findings Fifteen studies met inclusion criteria. Adherence among CI subjects ranged from 10.7%-38% with better rates of adherence in non-CI individuals. Medication non-adherence definitions varied considerably. New-learning, memory and executive functioning were associated with improved adherence and formed the focus of most studies

  6. Natural killer lymphoma/leukemia: an uncommon pediatric case with indolent course.

    Science.gov (United States)

    Di Cataldo, Andrea; Bertuna, Gregoria; Mirabile, Elena; Munda, Silvana; Tettoni, Katia; Notarangelo, Luigi D; Facchetti, Fabio; Lo Nigro, Luca

    2004-08-01

    Natural killer (NK) cell lymphomas are rare in the USA and Europe but more common in Asia and Central America although very rare among children. We report a case of Epstein-Barr virus-positive NK lymphoma/leukemia, that showed peculiar features represented by a very long clinical course with a significant interval between the first clinical signs and the diagnosis, detection of neoplastic cells in the peripheral blood but not in the bone marrow, and good response to treatment and clinical outcome.

  7. Current knowledge on natural killer cells, pregnancy and pre-eclampsia. Introduction.

    Science.gov (United States)

    Chaouat, Gérard

    2008-02-01

    The introduction to this review discusses briefly why immunology, perceived as difficult by assisted reproduction technology clinicians, need nevertheless be envisaged as a central actor in the reproduction process, and how the maternal immune system, initially perceived as a threat to the fetoplacental unit, is in fact utterly necessary for successful pregnancy. The key cells in such a process are uterine natural killer cells, which can act as friend or foe to the fetus, but are now known to play a key role in local vasculogenesis. As an ultimate consequence in cases of dysfunction/dysregulation, these factors result in implantation failure, abortion or pre-eclampsia.

  8. Contact-dependent Stimulation and Inhibition of Dendritic Cells by Natural Killer Cells

    OpenAIRE

    Piccioli, Diego; Sbrana, Silverio; Melandri, Emiliano; Valiante, Nicholas M.

    2002-01-01

    Natural killer (NK) cells and dendritic cells (DCs) are two distinct cell types of innate immunity. It is known that the in vitro interaction of human NK cells with autologous DCs results in DC lysis. Here we show that contact-dependent interactions between activated human NK cells and immature DCs (iDCs) provides a “control switch” for the immune system. At low NK/DC ratios, this interaction dramatically amplifies DC responses, whereas at high ratios it completely turns off their responses. ...

  9. Range and Primary Habitats of Hawaiian Insular False Killer Whales: Informing Determination of Critical Habitat

    Science.gov (United States)

    2012-07-20

    B, Rodriguez P, Thomas M (1997) Resightings and behavior of false killer whales (Pseudorca crassidens) in Costa Rica . Mar Mamm Sci 13: 307−314...solandri in its mouth when tagged and did not drop the fish . There were 3 cases where single companion individuals also reacted with a fast dive. No...n = 7), Maui (n = 1), and Hawai‘i (n = 18), all in low- density areas. Predation on fish was documented in 6 of 7 encounters off O‘ahu, 1 of 1

  10. Osteoporosis - "a silent killer". A review of the current literature from clinician and physiotherapist perspective

    OpenAIRE

    Kocjan, Janusz

    2015-01-01

    Kocjan Janusz. Osteoporosis - "a silent killer". A review of the current literature from clinician and physiotherapist perspective. Journal of Education, Health and Sport. 2015;5(7):63-70. ISSN 2391-8306. DOI 10.5281/zenodo.19173 http://ojs.ukw.edu.pl/index.php/johs/article/view/2015%3B5%287%29%3A63-70 https://pbn.nauka.gov.pl/works/576516 http://dx.doi.org/10.5281/zenodo.19173 Formerly Journal of Health Sciences. ISSN 1429-9623 / 2300-665X. Archives 2011 – 201...

  11. Effect of ranitidine on postoperative suppression of natural killer cell activity and delayed hypersensitivity

    DEFF Research Database (Denmark)

    Nielsen, Hans Jørgen; Pedersen, B K; Moesgaard, F;

    1989-01-01

    hypersensitivity (DTH) antigens, and blood drawn immediately before and 24 hours after skin incision was analyzed for spontaneous and in vitro stimulated (IL-2, IFN-alpha or indomethacin) natural killer (NK) cell activity and PHA and PPD-stimulated lymphocyte proliferation. Lymphocyte subsets (helper......-cell activity (p less than 0.02). Postoperative decrease in helper/inducer-T cell numbers was not significantly lessened (p = 0.07), and ranitidine did not influence the levels of suppressor-T cells. PHA and PPD responses in peripheral blood mononuclear cells were unaltered. The results may suggest potential...

  12. Transcription factors involved in the regulation of natural killer cell development and function: an update

    Directory of Open Access Journals (Sweden)

    Martha Elia Luevano

    2012-10-01

    Full Text Available Natural Killer (NK cells belong to the innate immune system and are key effectors in the immune response against cancer and infection. Recent studies have contributed to the knowledge of events controlling NK cell fate. The use of knockout mice has enabled the discovery of key transcription factors (TFs essential for NK cell development and function. Yet, unwrapping the downstream targets of these TFs and their influence on NK cells remains a challenge. In this review we discuss the latest TFs described to be involved in the regulation of NK cell development and maturation.

  13. Schrödinger's killer app race to build the world's first quantum computer

    CERN Document Server

    Dowling, Jonathan P

    2013-01-01

    The race is on to construct the first quantum code breaker, as the winner will hold the key to the entire Internet. From international, multibillion-dollar financial transactions to top-secret government communications, all would be vulnerable to the secret-code-breaking ability of the quantum computer. Written by a renowned quantum physicist closely involved in the U.S. government's development of quantum information science, Schrodinger's Killer App: Race to Build the World's First Quantum Computer presents an inside look at the government's quest to build a quantum computer capable of solvi

  14. Role of Natural Killer T Cells In Immunogenic Chemotherapy for Breast Cancer

    Science.gov (United States)

    2012-09-01

    28–38. 5. Godfrey, D. I., and M. Kronenberg . 2004. Going both ways: immune regulation via CD1d-dependent NKT cells. J. Clin. Invest. 114: 1379–1388. 6...Hong, D. C. Scherer, I. Serizawa, N. Burdin, M. Kronenberg , Y. Koezuka, and L. Van Kaer. 1999. Cutting edge: activation of NK T cells by CD1d and a...Y. Kinjo, and M. Kronenberg . 2007. The unique role of natural killer T cells in the response to microorganisms. Nat. Rev. Microbiol. 5: 405– 417. 45

  15. Male-killer dynamics in the tropical butterfly, Acraea encedana (Lepidoptera: Nymphalidae).

    Science.gov (United States)

    Hassan, Sami Saeed M; Idris, Eihab; Majerus, Michael E N

    2013-12-01

    Sex ratio distortion in the tropical butterfly Acraea encedana is caused by infection with a male-killing bacterium of the genus Wolbachia. Previous research on this species has reported extreme female bias, high bacterial prevalences, and full sex role reversal. In this paper, we provide an assessment for the dynamics of the male-killer, based on a survey for sex ratios and Wolbachia prevalences among wild populations of A. encedana in Uganda. The study reveals that Wolbachia infection showed considerable variation over both spatial and temporal scales.

  16. Extranodal Natural Killer/T-Cell Lymphoma of the Nasal Type with Skin Metastases

    Directory of Open Access Journals (Sweden)

    Fadi Al Akhrass

    2016-01-01

    Full Text Available Extranodal natural killer/T-cell lymphoma (ENKL of the nasal type is a rare, clinically aggressive disease. ENKL of the nasal type is often localized in the upper aerodigestive tract, including the nasal cavity, nasopharynx, paranasal sinuses, tonsils, hypopharynx and larynx, and usually presents as stage I/II. Extranasal involvement can occur, and a common site of extranasal involvement or metastatic disease includes the skin. Identifying skin metastases is important for the appropriate staging and treatment. We report a case of ENKL of the nasal type that presented with localized disease and subsequent skin lesions that were consistent with skin metastases.

  17. Enough! Stop the arguments and get on with the science of natural killer cell testing.

    Science.gov (United States)

    Sacks, Gavin

    2015-07-01

    Natural killer cell testing is currently practised widely, and there are studies indicating potential benefit in terms of targeting women with repeated reproductive failure for immune therapy. This may be a better approach than empirical immune therapy without any investigation. More and better studies are needed before such an approach can be fully endorsed. There is still uncertainty over the precise pathophysiological basis for all immune investigation and therapy, but this should not be a barrier for clinical observation and empirical care. On the contrary, clinicians and researchers should work more closely together to provide the best care for our patients.

  18. Ustilago maydis killer toxin as a new tool for the biocontrol of the wine spoilage yeast Brettanomyces bruxellensis.

    Science.gov (United States)

    Santos, Antonio; Navascués, Eva; Bravo, Enrique; Marquina, Domingo

    2011-01-31

    Brettanomyces bruxellensis is one of the most damaging species for wine quality, and tools for controlling its growth are limited. In this study, thirty-nine strains belonging to Saccharomyces cerevisiae and B. bruxellensis have been isolated from wineries, identified and then tested against a panel of thirty-nine killer yeasts. Here, for the first time, the killer activity of Ustilago maydis is proven to be effective against B. bruxellensis. Mixed cultures in winemaking conditions show that U. maydis CYC 1410 has the ability to inhibit B. bruxellensis, while S. cerevisiae is fully resistant to its killer activity, indicating that it could be used in wine fermentation to avoid the development of B. bruxellensis without undesirable effects on the fermentative yeast. The characterization of the dsRNAs isolated and purified from U. maydis CYC 1410 indicated that this strain produces a KP6-related toxin. Killer toxin extracts were active against B. bruxellensis at pH values between 3.0 and 4.5 and temperatures comprised between 15 °C and 25 °C, confirming their biocontrol activity in winemaking and wine aging conditions. Furthermore, small amounts (100 AU/ml) of killer toxin extracts from U. maydis significantly reduced the amount of 4-ethylphenol produced by B. bruxellensis, indicating that in addition to the growth inhibition observed for high killer toxin concentrations (ranging from 400 to 2000 AU/ml), small amounts of the toxin are able to reduce the production of volatile phenols responsible for the aroma defects in wines caused by B. bruxellensis.

  19. Medication adherence in schizophrenia: Exploring patients', carers' and professionals' views

    NARCIS (Netherlands)

    M.J. Kikkert; A.H. Schene; M.W.J. Koeter; D. Robson; A. Born; H. Helm; M. Nose; C. Goss; G. Thornicroft; R.J. Gray

    2006-01-01

    One of the major clinical problems in the treatment of people with schizophrenia is suboptimal medication adherence. Most research focusing on determinants of nonadherence use quantitative research methods. These studies have some important limitations in exploring the decision-making process of pat

  20. Novel Aggregative Adherence Fimbria Variant of Enteroaggregative Escherichia coli

    DEFF Research Database (Denmark)

    Jønsson, Rie; Struve, Carsten; Boisen, Nadia

    2015-01-01

    Enteroaggregative Escherichia coli (EAEC) organisms belong to a diarrheagenic pathotype known to cause diarrhea and can be characterized by distinct aggregative adherence (AA) in a stacked-brick pattern to cultured epithelial cells. In this study, we investigated 118 EAEC strains isolated from...

  1. Adherence of paclitaxel drug in magnetite chitosan nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Escobar Zapata, Edna V.; Martinez Perez, Carlos A.; Rodriguez Gonzalez, Claudia A.; Castro Carmona, Javier S. [Instituto de Ingenieria y Tecnologia, Universidad Autonoma de Ciudad Juarez, Ave. Del Charro 610 norte, Col. Partido Romero, C.P. 32320, Cd. Juarez Chihuahua (Mexico); Quevedo Lopez, Manuel A. [Departamento de Polimeros y Materiales, Universidad de Sonora, Blvd. Luis Encinas y Rosales, Hermosillo, Sonora (Mexico); Garcia-Casillas, Perla E., E-mail: pegarcia@uacj.mx [Instituto de Ingenieria y Tecnologia, Universidad Autonoma de Ciudad Juarez, Ave. Del Charro 610 norte, Col. Partido Romero, C.P. 32320, Cd. Juarez Chihuahua (Mexico)

    2012-09-25

    Highlights: Black-Right-Pointing-Pointer Chitosan silica magnetite adsorbs antineoplastic drug. Black-Right-Pointing-Pointer Silica coating improve the drug adherence. - Abstract: Cancer treatment is a big challenge in medicine where chemotherapies and radiotherapies are aggressive and poorly effective having side effects as delirium, fatigue, insomnia, nausea and vomiting which are common problems for cancer patients. For this reason, during the last two decades, many researchers have developed several techniques to improve the current therapies; one of them is the functionalization of magnetic nanoparticles for drug delivery. In this work, magnetic nanoparticles with an average crystallite size 21.8 nm were covered in a core/shell type; magnetite/silica, magnetite/chitosan, and a double shell magnetite/silica/chitosan were developed for attaching an antineoplastic drug. The mechanism for the functionalization of the nanoparticles with a single and double shell was studied with Fourier transformed infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The adherence of an antineoplastic drug, paclitaxel, onto functionalized nanoparticles was analyzed with a UV-Visible spectroscopy at a wavelength of 253 nm. It was found that the adherence of the drug is improved up to 18% when magnetite nanoparticles are coated with a single chitosan shell, and when the nanoparticles are coated with a silica/chitosan shell the adherence increases up to 29%.

  2. Factors influencing adherence to an emergency department national protocol.

    NARCIS (Netherlands)

    Ebben, R.H.A.; Vloet, L.C.M.; Groot, J.M. de; Achterberg, T. van

    2012-01-01

    The objective of this study was to identify factors that influence emergency nurses' adherence to an emergency department national protocol (EDNP). A survey of emergency nurses (n=200) and physicians with medical end responsibility on an emergency department (n=103) was carried out. Emergency nurses

  3. Adherence to preventive statin therapy according to socioeconomic position

    DEFF Research Database (Denmark)

    Wallach-Kildemoes, Helle; Andersen, Morten; Diderichsen, Finn;

    2013-01-01

    AIM: To explore whether long-term adherence to preventive statin therapy depends on socioeconomic position (SEP). METHODS: A cohort of individuals without established cardiovascular disease (CVD) or diabetes initiating preventive statin therapy during 2002-2005 was followed in the individual...

  4. Telephone interventions for adherence to colpocytological examination 1

    Science.gov (United States)

    Lima, Thais Marques; Nicolau, Ana Izabel Oliveira; Carvalho, Francisco Herlânio Costa; Vasconcelos, Camila Teixeira Moreira; Aquino, Priscila de Souza; Pinheiro, Ana Karina Bezerra

    2017-01-01

    ABSTRACT Objective: to test the effects of behavioral and educational intervention by telephone on adherence of women with inappropriate periodicity to colpocytological examination. Method: quasi-experimental study with a sample of 524 women, selected with the following inclusion criteria: be aged between 25 and 64 years, have initiated sexual activity, have inappropriate periodicity of examination and have mobile or landline phone. The women were divided into two groups for application of behavioral and educational intervention by telephone. It was used an intervention script according to the principles of Motivational Interviewing. Results: on comparing the results before and after the behavioral and educational interventions, it was found that there was a statistically significant change (p = 0.0283) with increase of knowledge of women who participated in the educational intervention. There was no change in the attitude of women of any of the groups and there was an increase of adherence to colpocytological examination in both groups (p < 0.0001), with greater adherence of women participating in the behavioral group (66.8%). Conclusion: the behavioral and educational interventions by phone were effective in the adherence of women to colpocytological examination, representing important strategies for permanent health education and promotion of care for the prevention of cervical cancer. PMID:28177055

  5. Interaction of adhered metallic dust with transient plasma heat loads

    NARCIS (Netherlands)

    Ratynskaia, S.; Tolias, P.; I. Bykov,; Rudakov, D.; de Angeli, M.; Vignitchouk, L.; Ripamonti, D.; Riva, G.; Bardin, S.; van der Meiden, H.; Vernimmen, J.; Bystrov, K.; De Temmerman, G.

    2016-01-01

    The first study of the interaction of metallic dust (tungsten, aluminum) adhered on tungsten substrates with transient plasma heat loads is presented. Experiments were carried out in the Pilot-PSI linear device with transient heat fluxes up to 550 MW m −2 and in the DIII-D divertor tokamak. The cent

  6. Generic substitution of antihypertensive drugs : does it affect adherence?

    NARCIS (Netherlands)

    Van Wijk, Boris L G; Klungel, Olaf H; Heerdink, Eibert R; de Boer, Anthonius

    2006-01-01

    BACKGROUND: Generic substitution is an important opportunity to reduce the costs of pharmaceutical care. However, pharmacists and physicians often find that patients and brand-name manufacturers have doubt about the equivalence of the substituted drug. This may be reflected by decreased adherence to

  7. Adherence Process Research on Developmental Interventions: Filling in the Middle.

    Science.gov (United States)

    Hogue, Aaron

    2002-01-01

    Presents a framework and some practical examples for using rigorous implementation research to inform program outcomes and foster program development for developmental interventions. Focuses on: (1) role of process research, specifically developing developmental interventions; (2) characteristics of adherence process research; and (3)…

  8. Intervention Adherence for Research and Practice: Necessity or Triage Outcome?

    Science.gov (United States)

    Barnett, David; Hawkins, Renee; Lentz, F. Edward, Jr.

    2011-01-01

    Intervention integrity or adherence describes qualities of carrying out an intervention plan and in research is fundamentally linked to experimental validity questions addressed by measurement of independent and dependent variables. Integrity has been well described in conceptual writing but has been a continuing thorny subject in research and…

  9. Adherence with Universal Precautions after Immediate, Personalized Performance Feedback

    Science.gov (United States)

    Luke, Molli M.; Alavosius, Mark

    2011-01-01

    We evaluated the effects of immediate, personalized performance feedback on adherence with hand hygiene by health-care staff in the context of a multiple baseline design across participants. Target behaviors reached mastery levels and were maintained near 100% throughout 2 months of maintenance probes. (Contains 1 table and 1 figure.)

  10. Noninfectious uveitis: strategies to optimize treatment compliance and adherence

    Directory of Open Access Journals (Sweden)

    Dolz-Marco R

    2015-08-01

    Full Text Available Rosa Dolz-Marco,1 Roberto Gallego-Pinazo,1 Manuel Díaz-Llopis,2 Emmett T Cunningham Jr,3–6 J Fernando Arévalo7,8 1Unit of Macula, Department of Ophthalmology, University and Polytechnic Hospital La Fe, 2Faculty of Medicine, University of Valencia, Spain; 3Department of Ophthalmology, California Pacific Medical Center, San Francisco, 4Department of Ophthalmology, Stanford University School of Medicine, Stanford, 5The Francis I Proctor Foundation, University of California San Francisco Medical Center, 6West Coast Retina Medical Group, San Francisco, CA, USA; 7Vitreoretina Division, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia; 8Retina Division, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA Abstract: Noninfectious uveitis includes a heterogenous group of sight-threatening ocular and systemic disorders. Significant progress has been made in the treatment of noninfectious uveitis in recent years, particularly with regard to the effective use of corticosteroids and non-corticosteroid immunosuppressive drugs, including biologic agents. All of these therapeutic approaches are limited, however, by any given patient’s ability to comply with and adhere to their prescribed treatment. In fact, compliance and adherence are among the most important patient-related determinants of treatment success. We discuss strategies to optimize compliance and adherence. Keywords: noninfectious uveitis, intraocular inflammation, immunosuppressive treatment, adherence, compliance, therapeutic failure

  11. Saul Bellow’s Adherence and Breakthrough to Jewish Tradition

    Institute of Scientific and Technical Information of China (English)

    刘晓艳

    2014-01-01

    As one of the most significant American Jewish writers in the 20th century, Saul Bellow was influenced by the Jewish tradition and American mainstream thoughts in his writing creations. The conflicts and amalgamation between these two different cultures in his novels indicate that Bellow not only adheres to the Jewish traditional culture, but also breaks through the narrow-mindedness of it.

  12. Microfluidic bioreactors for culture of non-adherent cells

    DEFF Research Database (Denmark)

    Shah, Pranjul Jaykumar; Vedarethinam, Indumathi; Kwasny, Dorota

    2011-01-01

    Microfluidic bioreactors (μBR) are becoming increasingly popular for cell culture, sample preparation and analysis in case of routine genetic and clinical diagnostics. We present a novel μBR for non-adherent cells designed to mimic in vivo perfusion of cells based on diffusion of media through...

  13. Elder and Caregiver Solutions to Improve Medication Adherence

    Science.gov (United States)

    O'Quin, K. E.; Semalulu, T.; Orom, H.

    2015-01-01

    Medication mismanagement is a growing public health concern, especially among elders. Annually, it is a major contributor to emergency hospitalization and nursing home placement. Elders and their caregivers, as healthcare consumers and stakeholders in this issue, are uniquely qualified to inform strategies to improve medication adherence. We…

  14. Adherence measured by microtiter assay as a virulence marker for Staphylococcus epidermidis infections.

    Science.gov (United States)

    Deighton, M A; Balkau, B

    1990-11-01

    Staphylococcus epidermidis strains isolated from clinical sources showed a wide range of abilities to adhere to glass and plastic materials. The degree of adherence depended on a number of factors, most notably, the composition of the growth medium. Adherence was enhanced by the addition of glucose or oleic acid to the growth medium and inhibited by serum. We have demonstrated a statistically significant association between the quantitative assessment of adherence to polystyrene tissue culture plates and clinical relevance. No such association was found when adherence was assessed by the qualitative adherence assay. Possible new approaches for assessing the clinical relevance of coagulase-negative staphylococcal isolates are discussed.

  15. Adherence to Infliximab Treatment in a Pediatric Inflammatory Bowel Disease Cohort.

    Science.gov (United States)

    Vitale, David S; Greenley, Rachel N; Lerner, Diana G; Mavis, Alisha M; Werlin, Steven L

    2015-10-01

    The aims of the study were to describe infliximab adherence in a pediatric inflammatory bowel disease cohort, to identify demographic and disease factors associated with adherence, and to examine differences in acute care use among adherent and nonadherent patients. Charts of patients who received infliximab at the Children's Hospital of Wisconsin (CHW) between October 2010 and October 2012 were retrospectively reviewed. A total of 151 patients met the inclusion criteria; 91.4% of the patients were adherent. Nonadherent patients had more emergency room visits and hospitalizations than adherent patients. The study is the first to show high adherence rates to infliximab in a pediatric cohort.

  16. Extranodal Natural Killer/T-cell lymphoma, nasal type: ‘midline lethal granuloma.’ A case report

    Directory of Open Access Journals (Sweden)

    Tlholoe Martha M

    2013-01-01

    Full Text Available Abstract Extranodal natural killer/T cell lymphoma, nasal type, is a non-Hodgkin lymphoma, most commonly affecting the nasal cavity, paranasal sinuses and nasopharynx. Clinically it is characterised by destruction of facial tissues, commencing in the midline. In most cases it arises from malignant transformation of natural killer cells (NK; sometimes from malignant transformation of cytotoxic T cells. Extranodal NK/T cell lymphoma, nasal type, is rare, but even more rare in black persons. The purpose of this article is to report a severe case of extranodal NK/T cell lymphoma, nasal type, in an elderly black male.

  17. Autologous cytokine-induced killer cells in equal to liver protectant in a patient with metastatic rectal cancer

    Institute of Scientific and Technical Information of China (English)

    Yanyi Ren; Zhaozhe Liu; Zhenyu Ding; Xiaodong Xie

    2013-01-01

    The cytokine-induced killer (CIK) therapy was an effective treatment for many cancers. We report a patient with postoperative rectal cancer received autologous CIK therapy combined with raltitrexed chemotherapy. After the adjuvant therapy, the serum transaminase was persistently elevated, and lung metastases was observed. Due to hepatic injury, only cytokine-induced killer therapy was administered, and it rectified transaminase. The following regimens of CIK therapy and low-dose raltitrexed could diminish the metastatic lesion, improve the quality of life and prolong the survival time. It reveals that the CIK cells may repair the hepatic injury.

  18. Developing a generic, individualised adherence programme for chronic medication users

    Directory of Open Access Journals (Sweden)

    Herborg H

    2008-09-01

    Full Text Available Objective: The scope of this article is to describe the background for and content of an adherence counselling programme with a specific focus on an individualised, multi-dimensional adherence model for patients with a potential adherence problem (a so-called ‘individualised systems model’.Methods: An intervention programme based on WHO’s systems model for adherence was developed for implementation in primary health care and tested in a development project in Danish pharmacies in 2004-2005 in three pharmacies and 4 GP practices by 27 patients. Data were collected from the participants by registration forms, questionnaires, and focus groups. Since the programme was to support patients in the self-management process regarding choice and implementation of medication treatment, various strategies were used and different theoretical assumptions and choices made prior to setting up the study. These strategies include distinguishing between different types of non-adherence, a model for stages of change, self-efficacy, narratives, motivating interviewing strategies and coaching techniques. These strategic and theoretical choices are described in the article. Results: The strategies and theoretical reflections formed the platform for the creation of a counselling programme, which was tested in two forms, a basic and an extended version - provided by either a pharmaconomist or a pharmacist. The result section also describes a toolbox of instruments to enable pharmacy staff and GPs to tailor a counselling programme for patients individually called ‘Safe and effective use of medicines’. Besides, the results include a description of how the WHO-model is transformed into an individualised counselling model.

  19. Role of Killer Immunoglobulin-Like Receptor and Ligand Matching in Donor Selection

    Directory of Open Access Journals (Sweden)

    Meral Beksaç

    2012-01-01

    Full Text Available Despite all efforts to improve HLA typing and immunosuppression, it is still impossible to prevent severe graft versus host disease (GVHD which can be fatal. GVHD is not always associated with graft versus malignancy and can prevent stem cell transplantation from reaching its goals. Overall T-cell alloreactivity is not the sole mechanism modulating the immune defense. Innate immune system has its own antigens, ligands, and mediators. The bridge between HLA and natural killer (NK cell-mediated reactions is becoming better understood in the context of stem cell transplantation. Killer immunoglobulin-like receptors (KIRs constitute a wide range of alleles/antigens segregated independently from the HLA alleles and classified into two major haplotypes which imprints the person's ability to suppress or to amplify T-cell alloreactivity. This paper will summarize the impact of both activating and inhibitory KIRs and their ligands on stem cell transplantation outcome. The ultimate goal is to develop algorithms based on KIR profiles to select donors with maximum antileukemic and minimum antihost effects.

  20. Cytotoxic activity of allogeneic natural killer cells on U251 glioma cells in vitro.

    Science.gov (United States)

    Guo, Meng; Wu, Tingting; Wan, Lixin

    2016-07-01

    The present study aimed to observe the cytotoxic activity of allogeneic natural killer (NK) cells on U251 glioma cells and to investigate their mechanism of action to establish an effective treatment strategy for neuroglioma. Cell survival curves, colony formation assays and karyotype analysis were performed to investigate the characteristics of U251 glioma cells. The present study demonstrated that natural killer group 2, member D (NKG2D)‑major histocompatibility complex class I‑related chain A/B (MICA/B) interactions contributed to the cytotoxic effect of NK cells on K562 and U251 cells. In antibody‑blocking assays to inhibit NKG2D ligands, the cytotoxic activity was not completely attenuated, which suggested that other signaling pathways contribute to the cytotoxic activity of NK cells on tumor cells in addition to the NKG2D‑mediated activity. The present study identified that the expression levels of NKG2D ligands on the surface of target cells influenced the strength of the NK cell immune response. Furthermore, allogeneic NK cells were observed to kill glioma cells in vitro, and this anticancer activity is associated with the rate of NKG2D expression on the surface of glioma cells.