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排序方式: 共有252条查询结果,搜索用时 15 毫秒
1.
Th‐17 Alloimmune Responses in Renal Allograft Biopsies From Recipients of Kidney Transplants Using Extended Criteria Donors During Acute T Cell–Mediated Rejection 下载免费PDF全文
M. Matignon A. Aissat F. Canoui‐Poitrine C. Grondin C. Pilon D. Desvaux D. Saadoun Q. Barathon M. Garrido V. Audard P. Rémy P. Lang J. Cohen P. Grimbert 《American journal of transplantation》2015,15(10):2718-2725
Although renal transplantation using expanded criteria donors has become a common practice, immune responses related to immunosenescence in those kidney allografts have not been studied yet in humans. We performed a retrospective molecular analysis of the T cell immune response in 43 kidney biopsies from patients with acute T cell–mediated rejection including 25 from recipients engrafted with a kidney from expanded criteria donor and 18 from recipients grafted with optimal kidney allograft. The clinical, transplant and acute T cell–mediated rejection characteristics of both groups were similar at baseline. The expression of RORγt, Il‐17 and T‐bet mRNA was significantly higher in the elderly than in the optimal group (p = 0.02, p = 0.036, and p = 0.01, respectively). Foxp3 mRNA levels were significantly higher in elderly patients experiencing successful acute T cell–mediated rejection reversal (p = 0.03). The presence of IL‐17 mRNA was strongly associated with nonsuccessful reversal in elderly patients (p = 0.008). Patients with mRNA IL17 expression detection and low mRNA Foxp3 expression experienced significantly more treatment failure (87.5%) than patients with no mRNA IL17 expression and/or high mRNA Foxp3 expression (26.7%; p = 0.017). Our study suggests that the Th17 pathway is involved in pathogenesis and prognosis of acute T cell–mediated rejection in recipients of expanded criteria allograft. 相似文献
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Hlne Vallet Pascal Seve Lucie Biard Jean Baptiste Fraison Philip Bielefeld Laurent Perard Boris Bienvenu Sbastien Abad Aude Rigolet Alban Deroux Damien Sene Antoinette Perlat Isabelle Marie Elodie Feurer Eric Hachulla Olivier Fain Gaëlle Clavel Sophie Riviere Pierre‐Alban Bouche Julie Gueudry Gregory Pugnet Phuc Le Hoang Matthieu Resche Rigon Patrice Cacoub Bahram Bodaghi David Saadoun 《Arthritis \u0026amp; Rheumatology》2016,68(6):1522-1530
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Saadoun D Sellam J Ghillani-Dalbin P Crecel R Piette JC Cacoub P 《Archives of internal medicine》2006,166(19):2101-2108
BACKGROUND: Data on essential mixed cryoglobulinemia (MC) are scarce, and most date back to studies before 1989 (ie, before the discovery of hepatitis C virus [HCV] infection). Our objective was to describe the spectrum of MC in the era of HCV infection. METHODS: Retrospective study from a single university hospital's database of 1434 patients who tested positive for MC between January 1989 and December 2003. RESULTS: One hundred thirty-three patients (9%) with persistent MC without HCV were included in the study. Sixty-five of 133 patients who fulfilled the criteria for MC vasculitis were compared with 118 patients with HCV-related MC vasculitis. The patients without HCV had increased frequencies of renal involvement and B-cell non-Hodgkin lymphoma (NHL), lower gammaglobulin levels, and higher death rates. Twenty-three of the patients had B-cell NHL (primarily of the lymphoplasmocytic and marginal zone types), and 8 patients had Sj?gren syndrome. In multivariate analysis, a cryoglobulin level higher than 0.6 g/L (odds ratio [OR], 1.44) and the presence of MC vasculitis (OR, 4.3) and hypogammaglobulinemia (OR, 6.7) were independently associated with B-cell NHL. After a mean follow-up of 49.4 months, 18 (14%) of 133 patients had died, primarily of sepsis. In multivariate analysis, age at diagnosis older than 60 years (OR, 1.06) and renal involvement (OR, 5.20) were independently associated with death. CONCLUSION: Patients with non-HCV-related MC vasculitis have a poor outcome and have a 4-fold increased risk of developing B-cell NHL. 相似文献
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Geri G Wechsler B Thi Huong du L Isnard R Piette JC Amoura Z Resche-Rigon M Cacoub P Saadoun D 《Medicine》2012,91(1):25-34
Cardiac abnormalities in patients with Beh?et disease (BD) include pericarditis, myocarditis, endocarditis with valvular regurgitation, intracardiac thrombosis, endomyocardial fibrosis, coronary arteritis with or without myocardial infarction, and aneurysms of the coronary arteries or sinus of Valsalva. Data regarding the clinical spectrum, prevalence, and outcome of cardiac lesions in BD are lacking. In this study, we report the main characteristics, treatment, and long-term outcomes of 52 patients with cardiac lesions from a cohort of 807 (6%) BD patients. Forty-five (86.5%) patients were male, with a mean (±SD) age at BD diagnosis of 29.3 ± 10.3 years.Cardiac involvement was the first feature of BD in 17 (32.7%) patients. Cardiac lesions included pericarditis (n = 20; 38.5%), endocarditis (mostly aortic insufficiency) (n = 14; 26.9%), intracardiac thrombosis (n = 10; 19.2%), myocardial infarction (n = 9; 17.3%), endomyocardial fibrosis (n = 4; 7.7%) and myocardial aneurysm (n = 1; 1.9%). Patients with cardiac involvement were more frequently male (86.5% vs. 64.9%; p < 0.01) and had more arterial (42.3% vs. 11.1%; p < 0.01) and venous lesions (59.6% vs. 35.8%; p < 0.01) compared to those without cardiac manifestations. Factors associated with complete remission of cardiac involvement were treatment regimens with oral anticoagulants, immunosuppressants, and colchicine. The 5-year survival rate was 83.6% and 95.8% (p = 0.03) in BD patients with and without cardiac involvement, respectively. After a median (Q1-Q3) follow-up of 3.0 (1.75-4.2) years, 8 patients had died, in 3 cases directly related to cardiac involvement.In conclusion, cardiac lesions affected 6% of our large cohort of BD patients. The prognosis of cardiac involvement in BD is poor and improves with oral anticoagulation, immunosuppressive therapy, and colchicine. 相似文献
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Splenic lymphoma with villous lymphocytes, associated with type II cryoglobulinemia and HCV infection: a new entity? 下载免费PDF全文
Saadoun D Suarez F Lefrere F Valensi F Mariette X Aouba A Besson C Varet B Troussard X Cacoub P Hermine O 《Blood》2005,105(1):74-76
Hepatitis C virus (HCV) has been associated with the development of B-cell non-Hodgkin lymphomas. We recently reported the regression of splenic lymphoma with villous lymphocytes (SLVL) in patients with HCV after antiviral treatment, demonstrating a direct role of HCV in lymphomagenesis. This study expands our previous results in 18 patients with chronic HCV and SLVL. Mixed cryoglobulinemia (MC) was present in all cases and was symptomatic in 13 (72%). All patients were treated with interferon alone or in association with ribavirin. Hematologic and virologic responses were correlated. Fourteen (78%) patients achieved a sustained complete hematologic response after clearance of HCV RNA. Two patients had a virologic partial response and achieved a complete hematologic response. Two virologic nonresponders achieved partial hematologic response. Regardless of the response, monoclonal immunoglobulin gene rearrangement persisted after treatment. This study underscores the role of HCV in the lymphomagenesis and the benefit of antiviral treatment for patients presenting with HCV-driven lymphoproliferations. 相似文献
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