190 research outputs found

    A new Oligocene site with terrestrial mammals and a selachian fauna from Minqar Tibaghbagh, the western Desert of Egypt

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    A new fossil site at Minqar Tibaghbagh, east of Siwa, in the Egyptian Western Desert is described. This represents the first place in Egypt outside the Fayum Depression yielding Paleogene, terrestrial mammals. Initial studies indicate the presence of palaeomastodonts, hyracoids, and anthracotheres, presumably early Oligocene in age. As only surface prospecting has been performed, more taxa will almost certainly be discovered in future investigations here and probably also elsewhere in the surroundings. A comparison is made with the most important contemporaneous sites in Libya and Egypt that yield terrestrial mammal remains. The selachian fauna from a higher level in the section confirms the Paleogene age of the subjacent strata. It is compared with selachians faunas from the early Oligocene Eastern Tethys Ocean at other places (the Fayum Depression in Egypt, and sites in Oman and Pakistan), and differs from these sites in being fully marine. Contrary to earlier studies, the open marine mudstones of the Daba’a Formation at Minqar Tibaghbagh are overlain by Paleogene marine sediments of most probably early Oligocene age and not early Miocene marine sediments as previously reported. These strata represent not only a new site with great potential for future finds, but also allows for biostratigraphic correlation

    PCR monitoring of response to liposomal amphotericin B treatment of systemic candidiasis in neutropenic mice

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    When a diagnosis of invasive candidiasis has been made, treatment with toxic fungicidal agents is inevitable. The crucial decision of when to stop such treatment is difficult to make, because cultures are often negative despite ongoing invasive candidiasis and can therefore not be used as a reliable parameter of effective therapy. In the present study, the use of PCR in monitoring the therapeutic efficacy of antifungal treatment with liposomal amphotericin B was evaluated by using neutropenic mice with systemic candidiasis. Blood cultures of infected mice treated with different doses of liposomal amphotericin B were only positive at the early onset of the infection process and became sterile within 3 days; this was true even with mice treated with 1 mg of liposomal amphotericin B per kg of body weight that experienced a relapse of infection 14 days later. A significant correlation between presence of Candida albicans in the kidneys and PCR results obtained with blood was demonstrated. Thus, PCR results obtained with blood samples correlated well with the therapeutic efficacy of antifungal treatment

    Improved detection of Candida albicans by PCR in blood of neutropenic mice with systemic candidiasis

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    A PCR using primers aimed at the multicopy gene coding for the small subunit rRNA and resulting in the synthesis of a 180-bp fragment was evaluated for its use in diagnosing invasive candidiasis in comparison with blood culture. With the use of a C. albicans-specific probe, +/- 10 to 15 C. albicans cells are detected in 100 microliters of whole blood by Southern analysis. A DNase pretreatment was critical in the purification process of yeast DNA from whole blood. Omission of the DNase pretreatment decreased assay sensitivity 10-fold. PCR analysis of blood specimens collected from mice with invasive candidiasis is more sensitive than blood culture (100 versus 67%, respectively) at 72 h after intravenous (i.v.) inoculation with C. albicans. Furthermore, the intensity of the hybridization signals increased with the progression of infection. In contrast, multiple blood samples from gastrointestinally colonized mice were all negative by PCR, indicating that the PCR assay is also specific and may, therefore, make a positive contribution to the detection and follow-up of invasive candidiasis

    Міжнародне співробітництво МВС України у сфері протидії корупції

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    У статті здійснено аналіз розвитку та сучасного стану міжнародної співпраці МВС України у сфері протидії корупції. Розглянуто формування нормативно-правової бази щодо боротьби з корупцією та пов’язаною з нею злочинністю, надано характеристику напрямів та шляхів співпраці органів внутрішніх справ нашої країни з іноземними державами, їх правоохоронними органами і спеціальними службами, а також із міжнародними організаціями, які здійснюють заходи із протидії корупції. Визначено перспективи подальшого розвитку міжнародного співробітництва МВС у протидії транснаціональним формам корупції.В статье осуществлен анализ развития и современного состояния международного сотрудничества МВД Украины в сфере противодействия коррупции. Рассмотрено формирование нормативно-правовой базы по борьбе с коррупцией и связанной с ней преступностью, дана характеристика направлений и путей сотрудничества органов внутренних дел Украины с зарубежными государствами, их правоохранительными органами и специальными службами, а также с международными организациями, которые осуществляют мероприятия по противодействию коррупции. Определены перспективные направления дальнейшего развития международного сотрудничества МВД Украины в сфере противодействия транснациональным формам коррупции.Development and modern state of the international cooperation of the Ukranian Ministry of Internal Affairs in the sphere of corruption counteraction is analyzed. It is considered the formation of normative and legal base concerning struggle against corruption and the criminality, it is given the characteristic of directions and ways of cooperation of law-enforcement bodies of Ukraine with the foreign states, their law enforcement bodies and special services, and also with the international organizations which carry out measures on counteraction of corruption. It is determined the perspective directions of the further development of the international cooperation of the Ministry of Internal Affairs in Ukraine in the sphere of counteraction to transnational forms of corruption

    Fibrinolysis during liver transplantation is enhanced by using solvent/detergent virus-inactivated plasma (ESDEP)

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    After the introduction of solvent/detergent-treated plasma (ESDEP) in our hospital, an increased incidence of hyperfibrinolysis was observed (75% vs 29%; P = 0.005) compared with the use of fresh frozen plasma for liver transplantation. To clarify this increased incidence, intraoperative plasma samples of patients treated with fresh frozen plasma or ESDEP were analyzed in a retrospective observational study. During the anhepatic phase, plasma levels of D-dimer (6.58 vs 1.53 microg/mL; P = 0.02) and fibrinogen degradation products (60 vs 23 mg/L; P = 0.018) were significantly higher in patients treated with ESDEP. After reperfusion, differences increased to 23.5 vs 4.7 microg/mL (D-dimer, P = 0.002) and 161 vs 57 mg/L (fibrinogen degradation products, P = 0.001). The amount of plasma received per packed red blood cell concentrate, clotting tests, and levels of individual clotting factors did not show significant differences between the groups. alpha(2)-Antiplasmin levels, however, were significantly lower in patients receiving ESDEP during the anhepatic phase (0.37 vs 0.65 IU/mL; P < 0.001) and after reperfusion (0.27 vs 0.58 IU/mL; P = 0.001). Analysis of alpha(2)-antiplasmin levels in ESDEP alone showed a reduction to 0.28 IU/mL (normal >0.95 IU/mL) because of the solvent/detergent process. Therapeutic consequences for the use of ESDEP in orthotopic liver transplantation are discussed in view of an increased incidence of hyperfibrinolysis caused by reduced levels of alpha(2)-antiplasmin in the solvent/detergent-treated plasma. IMPLICATIONS: The use of solvent/detergent virus-inactivated plasma is of increasing importance in the prevention of human immunodeficiency virus and hepatitis C virus transmission. Since the use of this plasma during orthotopic liver transplantation has increased, the incidence of hyperfibrinolysis was observed. Clotting analysis of the patients revealed small alpha(2)-antiplasmin concentrations because of the solvent/detergent process

    Application of a stochastic weather generator to assess climate change impacts in a semi-arid climate: The Upper Indus Basin

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    Assessing local climate change impacts requires downscaling from Global Climate Model simulations. Here, a stochastic rainfall model (RainSim) combined with a rainfall conditioned weather generator (CRU WG) have been successfully applied in a semi-arid mountain climate, for part of the Upper Indus Basin (UIB), for point stations at a daily time-step to explore climate change impacts. Validation of the simulated time-series against observations (1961–1990) demonstrated the models’ skill in reproducing climatological means of core variables with monthly RMSE of <2.0 mm for precipitation and ⩽0.4 °C for mean temperature and daily temperature range. This level of performance is impressive given complexity of climate processes operating in this mountainous context at the boundary between monsoonal and mid-latitude (westerly) weather systems. Of equal importance the model captures well the observed interannual variability as quantified by the first and last decile of 30-year climatic periods. Differences between a control (1961–1990) and future (2071–2100) regional climate model (RCM) time-slice experiment were then used to provide change factors which could be applied within the rainfall and weather models to produce perturbed ‘future’ weather time-series. These project year-round increases in precipitation (maximum seasonal mean change:+27%, annual mean change: +18%) with increased intensity in the wettest months (February, March, April) and year-round increases in mean temperature (annual mean +4.8 °C). Climatic constraints on the productivity of natural resource-dependent systems were also assessed using relevant indices from the European Climate Assessment (ECA) and indicate potential future risk to water resources and local agriculture. However, the uniformity of projected temperature increases is in stark contrast to recent seasonally asymmetrical trends in observations, so an alternative scenario of extrapolated trends was also explored. We conclude that interannual variability in climate will continue to have the dominant impact on water resources management whichever trajectory is followed. This demonstrates the need for sophisticated downscaling methods which can evaluate changes in variability and sequencing of events to explore climate change impacts in this region

    Patients' outcome expectations and their fulfilment in multidisciplinary stroke rehabilitation

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    BackgroundPatients’ expectations of the outcomes of rehabilitation may influence the outcomes and satisfaction with treatment.ObjectivesFor stroke patients in multidisciplinary rehabilitation, we aimed to explore patients’ outcome expectations and their fulfilment as well as determinants.MethodsThe Stroke Cohort Outcomes of REhabilitation (SCORE) study included consecutive stroke patients admitted to an inpatient rehabilitation facility after hospitalisation. Outcome expectations were assessed at the start of rehabilitation (admission) by using the three-item Expectancy scale (sum score range 3–27) of the Credibility/Expectancy Questionnaire (CEQ). After rehabilitation, patients answered the same questions formulated in the past tense to assess fulfilment of expectations. Baseline patient characteristics were recorded and health-related quality of life (EQ-5D) was measured at baseline and after rehabilitation. The number of patients with expectations unfulfilled or fulfilled or exceeded was computed by subtracting the admission and discharge CEQ Expectancy scores. Multivariable regression analysis was used to determine the factors associated with outcome expectations and their fulfilment, estimating odds ratios (ORs) and 95% confidence intervals (CIs).ResultsWe included 165 patients (96 males [58.2%], mean (SD) age 60.2 years [12.7]) who completed the CEQ Expectancy instrument at admission (median score 21.6, interquartile range [IQR] 17.0–24.0); 79 completed it both at admission (median score 20.6, IQR 16.6–24.4) and follow-up (median score 20.0, IQR 16.4–22.8). For 40 (50.6%) patients, expectations of therapy were fulfilled or exceeded. No patient characteristic at admission was associated with baseline CEQ Expectancy score. Odds of expectation fulfilment were associated with low expectations at admission (OR 0.70, 95% CI 0.60–0.83) and improved EQ-5D score (OR 1.35, 95% CI 1.04–0.75).ConclusionsIn half of the stroke patients in multidisciplinary rehabilitation, expectations were fulfilled or exceeded, most likely in patients with low expectations at admission and with improved health-related quality of life. More research into the role of health professionals regarding the measurement, shaping and management of outcome expectations is needed.Analysis and Stochastic

    Epidermal growth factor receptor as target for perioperative elimination of circulating colorectal cancer cells

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    Surgical resection of the tumor is the primary treatment of colorectal cancer patients. However, we previously demonstrated that abdominal surgery promotes the adherence of circulating tumor cells (CTC) in the liver and subsequent liver metastasis development. Importantly, preoperative treatment with specific tumor-targeting monoclonal antibodies (mAb) prevented surgery-induced liver metastasis development in rats. This study investigated whether the epidermal growth factor receptor (EGFR) represents a suitable target for preoperative antibody treatment of colorectal cancer patients undergoing surgery. The majority of patients with resectable colorectal liver metastases were shown to have EGFR + CTCs. Three different anti-EGFR mAbs (cetuximab, zalutumumab, and panitumumab) were equally efficient in the opsonization of tumor cell lines. Additionally, all three mAbs induced antibody-dependent cellular phagocytosis (ADCP) of tumor cells by macrophages at low antibody concentrations in vitro, independent of mutations in EGFR signaling pathways. The plasma of cetuximab-treated patients efficiently opsonized tumor cells ex vivo and induced phagocytosis. Furthermore, neither proliferation nor migration of epithelial cells was affected in vitro, supporting that wound healing will not be hampered by treatment with low anti-EGFR mAb concentrations. These data support the use of a low dose of anti-EGFR mAbs prior to resection of the tumor to eliminate CTCs without interfering with the healing of the anastomosis. Ultimately, this may reduce the risk of metastasis development, consequently improving long-term patient outcome significantly.Transplantation and autoimmunit

    Agreement of general practitioners with the guideline-based stepped-care strategy for patients with osteoarthritis of the hip or knee: A cross-sectional study

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    Background: To improve the management of hip or knee osteoarthritis (OA), a multidisciplinary guideline-based stepped-care strategy (SCS) with recommendations regarding the appropriate non-surgical treatment modalities and optimal sequence for care has been developed. Implementation of this SCS in the general practice may be hampered by the negative attitude of general practitioners (GPs) towards the strategy. In order to develop a tailored implementation plan, we assessed the GPs' views regarding specific recommendations in the SCS and their working procedures with regard to OA. Methods. A survey was conducted among a random sample of Dutch GPs. Questions included the GP's demographical characteristics and the practice setting as well as how the management of OA was organized and whether the GPs supported the SCS recommendations. In particular, we assessed GP's views regarding the effectiveness of 14 recommended and non-recommended treatment modalities. Furthermore, we calculated their agreement with 7 statements based on the SCS recommendations regarding the sequence for care. With a linear regression model, we identified factors that seemed to influence the GPs' agreement with the SCS recommendations. Results: Four hundred fifty-six GPs (37%) aged 30-65 years, of whom 278 males (61%), responded. Seven of the 11 recommended modalities (i.e. oral Non-Steroidal Anti-Inflammatory Drugs, physical therapy, glucocorticoid intra-articular injections, education, lifestyle advice, acetaminophen, and tramadol) were considered effective by the majority of the GPs (varying between 95-60%). The mean agreement score, based on a 5-point scale, with the recommendations regarding the sequence for care was 2.8 (SD = 0.5). Ten percent of the variance in GPs' agreement could be explained by the GPs' attitudes regarding the effectiveness of the recommended and non-recommended non-surgical treatment modalities and the type of practice. Conclusion: In general, GPs support the recommendations in the SCS. Therefore, we expect that their attitudes will not impede a successful implementation in general practice. Our results provide sev
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