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71.
Postoperative extracorporeal life support in pediatric cardiac surgery: recent results 总被引:5,自引:0,他引:5
Ghez O Feier H Ughetto F Fraisse A Kreitmann B Metras D 《ASAIO journal (American Society for Artificial Internal Organs : 1992)》2005,51(5):513-516
We retrospectively reviewed the files of 19 extracorporeal life support (ECLS) applications performed after cardiac surgery in 15 patients from January 2002 to December 2004. We placed 16 arteriovenous ECLS applications with oxygenator, 2 venovenous ECLS applications with oxygenator, and 1 biventricular ECLS application without oxygenator (graft dysfunction after heart transplant). Mean age was 4.9 +/- 7 years (median 5.9 months, range 11 days to 21 years). All patients underwent surgery for congenital heart disease, except for one patient who had a heart transplant. Indications were hemodynamic failure in 12 cases, respiratory failure in 5 cases, and mixed failure in 2 cases. Four patients were undergoing cardiopulmonary resuscitation during ECLS placement (no deaths). Mean delay between surgery and ECLS placement was 3.2 +/- 3.4 days (median 2 days). Mean ECLS duration was 3.4 +/- 5.8 days (mean 6 days, range 3-16 days). Three patients had further surgery for residual lesions. Thirteen patients (86.7%) survived to ECLS weaning; 12 patients survived to hospital discharge (80%). No survivor presented obvious neurologic damage. Specific morbidity included reentry for bleeding, multiple transfusions, and mediastinitis. These results support early placement of ECLS in children whenever a severe postoperative hemodynamic or respiratory failure, refractory to medical treatment, is present. 相似文献
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Complement C5 in experimental autoimmune encephalomyelitis (EAE) facilitates remyelination and prevents gliosis 下载免费PDF全文
Activation of the classical complement system is known to play a central role in autoimmune demyelination. We have analyzed the role of complement component C5 in experimental autoimmune encephalomyelitis (EAE) using C5-deficient (C5-d) and C5-sufficient (C5-s) mice. Both groups of mice displayed early onset EAE, a short recovery phase, and similar stable chronic courses. However, in contrast to the clinical similarities, marked differences were apparent by histopathology. During acute EAE in C5-d, a delay in inflammatory cell infiltration and tissue damage was observed along with restricted lesion areas, which in C5-s mice were more extensive and diffuse. More striking were the differences in chronic lesions. In C5-d mice, inflammatory demyelination and Wallerian degeneration were followed by axonal depletion and severe gliosis, while in C5-s, the same initial signs were followed by axonal sparing and extensive remyelination. In C5-d, immunohistochemistry and Western blotting showed an increase in glial fibrillary acidic protein and a decrease in neurofilament protein, proteolipid protein, and several pro-inflammatory markers. These results in the EAE model indicate that absence of C5 resulted in fiber loss and extensive scarring, whereas presence of C5-favored axonal survival and more efficient remyelination. 相似文献
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Fosbrink M Cudrici C Niculescu F Badea TC David S Shamsuddin A Shin ML Rus H 《Experimental and molecular pathology》2005,78(2):116-122
Tumors often exhibit deregulation of the cell cycle and overexpression of cyclins and cyclin-dependent kinases (CDKs). Response gene to complement (RGC)-32 is a substrate and regulator of CDC2 and its overexpression induces cell cycle activation. We investigated RGC-32 mRNA and protein expression in tumors with special emphasis in colon carcinoma. By using an expression array technique we found that 19% of tumor tissues showed increased RGC-32 mRNA expression over the levels of corresponding normal tissues. On the other hand, an increased RGC-32 protein was found in 70% of colon adenocarcinoma samples tested. In colon carcinomas, two major patterns of RGC-32 immunoreactivity were seen: staining of malignant epithelial cells only in some tumors and RGC-32 reactivity of both malignant epithelia as well as cells in the interstitium in others. Colonic epithelium obtained from normal individuals was consistently negative for RGC-32 protein. Overexpression of RGC-32 protein was found in other tumors including prostate, bladder, breast, lung, and other digestive tract tumors. RGC-32 expression was present in the same malignant epithelial cells that also expressed the proliferation marker Ki-67. Our data suggest that RGC-32 overexpression might be part of the deregulation of the cell cycle that is required for the growth of tumor cells. 相似文献
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Ştefana Bâlici Sergiu Şuşman Dan Rusu Gheorghe Zsolt Nicula Olga Soriţău Mariana Rusu Alexandru S. Biris Horea Matei 《Journal of applied toxicology : JAT》2016,36(3):373-384
Two polyoxometalates (POMs) with W were synthesized by a two‐step, self‐assembling method. They were used for stimulation of mesenchymal stem cell differentiation into insulin‐producing cells. The nanocompounds (tris(vanadyl)‐substituted tungsto‐antimonate(III) anions [POM1] and tris‐butyltin‐21‐tungsto‐9‐antimonate(III) anions [POM2]) were characterized by analytical techniques, including ultraviolet‐visible, Fourier transform infrared, nuclear magnetic resonance spectroscopy, and transmission electron microscopy. We found that these polyoxotungstates, with 2–4 nm diameters, did not present toxic effects at the tested concentrations. In vitro, POM1 stimulated differentiation of a greater number of dithizone‐positive cells (also organized in clusters) than the second nanocompound (POM2). Based on our in vitro studies, we have concluded that both the POMs tested had significant biological activity acting as active stimuli for differentiation of stem cells into insulin‐producing cells. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
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Serban Bubenek Anca Nastase Ana Maria Niculescu Sorin Baila Vlad Herlea Vadimir Lazar Liliana Paslaru Anca Botezatu Dana Tomescu Irinel Popescu Simona Dima 《The Canadian journal of cardiology》2012