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Galectin-1 is overexpressed in nasal polyps under budesonide and inhibits eosinophil migration 总被引:2,自引:0,他引:2
Delbrouck C Doyen I Belot N Decaestecker C Ghanooni R de Lavareille A Kaltner H Choufani G Danguy A Vandenhoven G Gabius HJ Hassid S Kiss R 《Laboratory investigation; a journal of technical methods and pathology》2002,82(2):147-158
Because of the importance of galectins for various cellular activities, the influence of the glucocorticoid budesonide on the level of expression of galectins-1 and -3 was investigated in human nasal polyposis. Ten nasal polyps obtained from surgical resection were maintained for 24 hours in the presence of various concentrations of budesonide. As quantitatively demonstrated by means of computer-assisted microscopy, 250 ng/ml (the highest dose tested) induced a pronounced increase of galectin-1 expression. This feature was observed in nasal polyps from allergic patients but not in those from nonallergic patients. Since eosinophils represent the main inflammatory cell population in nasal polyps, we investigated the effect of galectin-1 on their migration levels by means of quantitative phase-contrast computer-assisted videomicroscopy. Our results show that galectin-1 (coated on plastic supports) markedly reduced the migration levels of eosinophils in comparison to P-selectin. On the cellular level, marked modifications in the polymerization/depolymerization dynamics of the actin cytoskeleton (as revealed by means of computer-assisted fluorescence microscopy) and, to a much lesser extent, an increase in the adhesiveness of eosinophils to tested substrata were detectable. The present study therefore reveals a new galectin-1-mediated mechanism of action for glucocorticoid-mediated anti-inflammatory effects. 相似文献
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B. Bader-Meunier C. Gitiaux A. Belot K. Brochard R. Mouy D. Ponce V. Bughin F. Jouen L. Musset Y. Allenbach E. Hachulla H. Maillard A. Meyer E. Bourrat O. Benveniste 《Archives de pédiatrie》2019,26(2):120-125
A guideline group consisting of a pediatric rheumatologist, internists, rheumatologists, immunologists, a physiotherapist and a patient expert elaborated guidelines related to the management of juvenile dermatomyositis on behalf of the rare autoimmune and autoinflammatory diseases network FAI2R. A systematic search of the literature published between 2000 and 2015 and indexed in PubMed was undertaken. Here, we present the expert opinion for diagnosis and treatment in juvenile dermatomyositis. 相似文献
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E. David A. Belot J.-C. Lega I. Durieu C. Rousset-Jablonski 《La Revue de médecine interne / fondée ... par la Société nationale francaise de médecine interne》2021,42(7):498-504
Infection with human papillomavirus (HPV) is one of the most widespread sexually transmitted diseases and the main risk factor for cervical cancer. Underlying conditions, like immunosuppression, favour the persistence and the progression of cervical lesions to an aggressive form. Patients with autoimmune diseases, and particularly systemic lupus erythematosus (SLE), may be prone to HPV infection and cervical dysplasia. However, the risk factors for developing persistent HPV-related infection, dysplasia and cancer are not identified for patients with SLE. The existence of an increased risk of cervical cancer compared to the general population remains debated. Thus, HPV vaccine is recommended for SLE patients as well as for the general population. Vaccine coverage of SLE patients is not known in France. Adolescents with chronic health condition seem to be insufficiently vaccinated regarding their vulnerability to infectious diseases. Strategies are required to decrease HPV vaccination barriers. 相似文献
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Ellia Mezgueldi Aurlia Bertholet‐Thomas Solange Milazzo Michael Morris Justine Bacchetta Nicole Fabien Pierre Cochat Anthony P. Weetman Elizabeth Helen Kemp Alexandre Belot 《Clinical Case Reports》2015,3(10):809-813
Early diagnosis of potentially life‐threatening autoimmune polyendocrinopathy‐candidiasis‐ectodermal dystrophy (APECED) is crucial, but is often delayed due to the clinical heterogeneity of the disorder. Even in the absence of the classic disease triad of chronic mucocutaneous candidiasis, hypoparathyroidism, and adrenocortical insufficiency, a diagnosis of APECED should be considered in children who have hypoparathyroidism and chronic keratitis, with a past medical history showing a mild and transient Candida infection. 相似文献
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Marine Mommert Magali Perret Matthew Hockin Sébastien Viel Alexandre Belot Jean-Christophe Richard Mehdi Mezidi Jean-Baptiste Fassier Etienne Javouhey ANTOINE Study Group COVID-SER Study Group COVID-HCL Study Group Andrew Hemmert François Mallet Sophie Trouillet-Assant Karen Brengel-Pesce 《European journal of immunology》2021,51(4):989-994
Low concentrations of type-I interferon (IFN) in blood seem to be associated with more severe forms of Coronavirus disease 2019 (COVID-19). However, following the type-I interferon response (IR) in early stage disease is a major challenge. We evaluated detection of a molecular interferon signature on a FilmArray® system, which includes PCR assays for four interferon stimulated genes. We analyzed three types of patient populations: (i) children admitted to a pediatric emergency unit for fever and suspected infection, (ii) ICU-admitted patients with severe COVID-19, and (iii) healthcare workers with mild COVID-19. The results were compared to the reference tools, that is, molecular signature assessed with Nanostring® and IFN-α2 quantification by SIMOA® (Single MOlecule Array). A strong correlation was observed between the IR measured by the FilmArray®, Nanostring®, and SIMOA® platforms (r-Spearman 0.996 and 0.838, respectively). The FilmArray® panel could be used in the COVID-19 pandemic to evaluate the IR in 45-min with 2 min hand-on-time at hospitalization and to monitor the IR in future clinical trials. 相似文献
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Vincent Goëb Marc Ardizzone Laurent Arnaud Jérôme Avouac Athan Baillet Alexandre Belot Béatrice Bouvard Pascal Coquerelle Sabrina Dadoun Alain Diguet David Launay Danielle Lebouc Pierre Loulergue Sophie Mahy Pascal Mestat Gaël Mouterde Benjamin Terrier Coralie Varoquier Jean Sibilia 《Revue du Rhumatisme》2013,80(5):459-466