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排序方式: 共有63条查询结果,搜索用时 140 毫秒
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Tony Wawina-Bokalanga Bert Vanmechelen Valentine Lhermitte Joan Martí-Carreras Valentijn Vergote Fara Raymond Koundouno Joseph Akoi-Bor Ruth Thom Tom Tipton Kimberley Steeds Kita Balla Moussa Ablam Amento Lies Laenen Sophie Duraffour Martin Gabriel Paula Ruibal Yper Hall Mandy Kader-Kond Stephan Günther Guy Baele Cesar Muoz-Fontela Johan Van Weyenbergh Miles W. Carroll Piet Maes 《Emerging infectious diseases》2021,27(1):76
We investigated the genetic profiles of killer cell immunoglobulin-like receptors (KIRs) in Ebola virus–infected patients. We studied the relationship between KIR–human leukocyte antigen (HLA) combinations and the clinical outcomes of patients with Ebola virus disease (EVD). We genotyped KIRs and HLA class I alleles using DNA from uninfected controls, EVD survivors, and persons who died of EVD. The activating 2DS4–003 and inhibitory 2DL5 genes were significantly more common among persons who died of EVD; 2DL2 was more common among survivors. We used logistic regression analysis and Bayesian modeling to identify 2DL2, 2DL5, 2DS4–003, HLA-B-Bw4-Thr, and HLA-B-Bw4-Ile as probably having a significant relationship with disease outcome. Our findings highlight the importance of innate immune response against Ebola virus and show the association between KIRs and the clinical outcome of EVD. 相似文献
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Róbert Szabó Lukáš Radosa Martina Ličková Monika Sláviková Marta Heroldová Michal Stanko Milan Pejčoch Anja Osterberg Lies Laenen Susanne Schex Rainer G. Ulrich Sandra Essbauer Piet Maes Boris Klempa 《Virus genes》2017,53(6):913-917
Puumala virus (PUUV), carried by bank voles (Myodes glareolus), is the medically most important hantavirus in Central and Western Europe. In this study, a total of 523 bank voles (408 from Germany, 72 from Slovakia, and 43 from Czech Republic) collected between the years 2007–2012 were analyzed for the presence of hantavirus RNA. Partial PUUV genome segment sequences were obtained from 51 voles. Phylogenetic analyses of all three genome segments showed that the newfound strains cluster with other Central and Western European PUUV strains. The new sequences from ?umava (Bohemian Forest), Czech Republic, are most closely related to the strains from the neighboring Bavarian Forest, a known hantavirus disease outbreak region. Interestingly, the Slovak strains clustered with the sequences from Bohemian and Bavarian Forests only in the M but not S segment analyses. This well-supported topological incongruence suggests a segment reassortment event or, as we analyzed only partial sequences, homologous recombination. Our data highlight the necessity of sequencing all three hantavirus genome segments and of a broader bank vole screening not only in recognized endemic foci but also in regions with no reported human hantavirus disease cases. 相似文献
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Vangeneugden T Molenberghs G Laenen A Alonso A Geys H 《Journal of biopharmaceutical statistics》2008,18(4):691-712
This work investigates how generalizability, an extension of reliability, can be defined and estimated based on longitudinal data sequences resulting from, for example, clinical studies. Useful and intuitive approximate expressions are derived based on generalized linear mixed models. Data from four double-blind, randomized clinical trials into schizophrenia motivate the research and are used to estimate generalizability for a binary response parameter. 相似文献
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Purpose
The Functional Living Index-Cancer was developed to measure quality of life in cancer trials as an adjunct to the usual clinical outcomes. The scale is considered conceptually good, since it covers a broad range of relevant aspects of quality of life, but the main criticism has been that its reliability has never been properly investigated. In this paper, we investigate the reliability of the FLIC. 相似文献7.
Louis Nevejan Lize Cuypers Lies Laenen Liselotte Van Loo Franois Vermeulen Elke Wollants Ignace Van Hecke Stefanie Desmet Katrien Lagrou Piet Maes Emmanuel Andr 《Emerging infectious diseases》2022,28(8):1729
Illustrated by a clinical case supplemented by epidemiologic data, early reinfections with SARS-CoV-2 Omicron BA.1 after infection with Delta variant, and reinfection with Omicron BA.2 after Omicron BA.1 infection, can occur within 60 days, especially in young, unvaccinated persons. The case definition of reinfection, which influences retesting policies, should be reconsidered. 相似文献
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Annelies Verbiest Inne Renders Stefano Caruso Gabrielle Couchy Sylvie Job Annouschka Laenen Virginie Verkarre Nathalie Rioux-Leclercq Patrick Schöffski Yann Vano Reza-Thierry Elaidi Evelyne Lerut Maarten Albersen Stéphane Oudard Wolf-Hervé Fridman Catherine Sautès-Fridman Laurence Albigès Agnieszka Wozniak Benoit Beuselinck 《Clinical genitourinary cancer》2019,17(5):e981-e994
IntroductionRecent trials have suggested predictive biomarkers in advanced clear-cell renal cell carcinoma (accRCC): International Metastatic RCC Database Consortium (IMDC) good risk or angiogenic gene signature for sunitinib and IMDC intermediate/poor risk for ipilimumab-nivolumab and T-effector cell signature or sarcomatoid dedifferentiation for atezolizumab-bevacizumab. We hypothesized that earlier described molecular subtypes, ccrcc1 to ccrcc4, could provide similar information as a single generic biomarker and molecularly characterize the heterogeneous intermediate-risk group.Patients and MethodsPatients with accRCC treated with systemic therapies were included. We assessed associations between the 5 biomarkers and their impact on progression-free survival (PFS) and response rate (RR) on first-line sunitinib or pazopanib. The cutoff percentage of sarcomatoid dedifferentiation with optimal discriminative value was determined.ResultsIn total, 430 patients were included (163 with molecular data). The molecular ccrcc2 subtype identified tumors with higher angiogenic gene expression across IMDC risk groups: prevalence was high in IMDC good risk and low in IMDC poor risk (P < .001). Molecular subtype, IMDC, and angiogenic gene expression had comparable C-indices to predict PFS and RR (range, 60%-66%). The ccrcc2 subtype and angiogenic gene expression were positive predictors of PFS in IMDC intermediate-risk patients (P = .006; P = .04). Immune signature did not differ between IMDC groups, but was strongly correlated with molecular subtype (P = .8 and P = .0007). A cutoff value of 25% sarcomatoid differentiation discriminated tumors with distinct molecular characteristics and therapeutic sensitivity.ConclusionIn accRCC, molecular subtypes can explain differences in IMDC risk group, expression of angiogenesis and immune response genes, and sarcomatoid dedifferentiation. They can identify molecularly different patient populations within the heterogeneous IMDC intermediate group and select patients for systemic therapies. 相似文献
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R C Garner I Goris A A E Laenen E Vanhoutte W Meuldermans S Gregory J V Garner D Leong M Whattam A Calam C A W Snel 《Drug metabolism and disposition》2002,30(7):823-830
Accelerator mass spectrometry (AMS) has been used in a human mass balance and metabolism study to analyze samples taken from four healthy male adult subjects administered nanoCurie doses of the farnesyl transferase inhibitor 14C-labeled (R)-6-[amino(4-chlorophenyl)(1-methyl-1H-imidazol-5-yl)methyl]-4-(3-chlorophenyl)-1-methyl-2(1H)-quinolinone ([14C]R115777). Plasma, urine, and feces samples were collected at fixed timepoints after oral administration of 50 mg [14C]R115777 (25.4 Bq/mg or 687 pCi/mg i.e., equivalent to 76.257 x 10(3) dpm) per subject. AMS analysis showed that drug-related (14)C was present in the plasma samples with C(max) values ranging from 1.6055 to 2.9074 dpm/ml (1.0525-1.9047 microg/ml) at t(max) = 2 to 3 h. The C(max) values for acetonitrile extracts of plasma samples ranged from 0.3724 to 0.7490 dpm/ml in the four male subjects. Drug-related 14C was eliminated from the body both in the urine and the feces, with a mean total recovery of 79.8 +/- 12.9% in the feces and 13.7 +/- 6.2% in the urine. The majority of drug-related radioactivity in urine and feces was excreted within the first 48 h. High-performance liquid chromatography (HPLC)-AMS profiles were generated from radioactive parent drug plus metabolites from pooled diluted urine, plasma, and methanolic feces extracts and matched to retention times of synthetic reference substances, postulated as metabolites. All HPLC separations used no more than 5 dpm injected on-column. The radioactive metabolite profiles obtained compared well with those obtained using liquid chromatography/tandem mass spectometry. This study demonstrates the use of AMS in a human phase I study in which the administered radioactive dose was at least 1000-fold lower than that used for conventional radioactive studies. 相似文献
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Geert Maleux Ward Vander Mijnsbrugge Denis Henroteaux Annouschka Laenen Sandra Cornelissen Kathleen Claes Inge Fourneau Nicolas Verbeeck 《Journal of vascular and interventional radiology : JVIR》2018,29(4):470-475.e3