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排序方式: 共有231条查询结果,搜索用时 15 毫秒
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Anwar Fathollahi Saeed Aslani Ahmadreza Jamshidi Mahdi Mahmoudi 《Journal of cellular physiology》2019,234(8):12309-12324
Osteoarthritis (OA) is the most common type of arthritis and no longer is considered as an absolute consequence of joint mechanical use (wear and tear); rather recent data demonstrate the pivotal role of inflammatory mediators in the development and progression of this disease. This multifactorial disease results from several environmental and inherited factors. Genetic cannot solely explain all the contribution share of inheritance and, this way, it is speculated that epigenetics can play a role, too. Moreover, environmental factors can induce local epigenetic changes. The epigenetic contribution to OA pathogenesis occurs at all of its levels, DNA methylation, histone modification, microRNA, and long noncoding RNA. In fact, during early phases of OA pathogenesis, environmental factors employ epigenetic mechanisms to provide a positive feedback for the OA-related pathogenic mechanisms and pathways with an ultimate outcome of a well-established clinical OA. These epigenetic changes stay during clinical disease and prevent the body natural healing and regenerative processes to work properly, resulting in an incurable disease condition. In this review article, we aimed to have an overview on the studies performed with regard to understanding the role of epigenetics in the etiopathogenesis of OA and highlighted the importance of such kind of regulatory mechanisms within this context. 相似文献
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Rahbar Mohammad Reza Zarei Mahboubeh Jahangiri Abolfazl Khalili Saeed Nezafat Navid Negahdaripour Manica Fattahian Yaser Ghasemi Younes 《International journal of peptide research and therapeutics》2020,26(3):1269-1282
International Journal of Peptide Research and Therapeutics - Acinetobacter baumannii is an important pathogen responsible for nosocomial infections worldwide. Trimeric autotransporters, the... 相似文献
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Ghodrat Mahmoudi 《Inorganica chimica acta》2009,362(9):3238-764
Three new polymeric mercury(II) thiocyanate coordination polymers, {[Hg2(L4)(SCN)4]n (1), [Hg2(μ-L5)(μ-SCN)4]n[Hg2(μ-L5)(μ-SCN)4]2n (2) and [Hg(L6)(SCN)2]n (3); L4 = 2,5-bis(2-pyridyl)-3,4-diaza-2,4-hexadiene, L5 = 2,5-bis(3-pyridyl)-3,4-diaza-2,4-hexadiene and L6 = 2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene) were prepared from reactions of mercury(II) thiocyanate with three organic nitrogen donor-based ligands under thermal gradient conditions using the branched tube method and fully characterized by infrared spectroscopy, elemental analysis, thermo gravimetric analysis, and single crystal X-ray diffraction. The compounds are structurally diverse and show very interesting structural motifs: the compound 1 is one-dimensional heterochiral double-chains. In compound 2, the bridging ligand L5 adopts a transoid conformation and the network contains two interpenetrating coordination polymers, a 2D net and a 1D double-chain. The crystal structure of 3 consists of one-dimensional zigzag chains. Solid-state luminescent spectra of the compounds 1 and 3 indicate intense fluorescent emissions at ca. 393 nm and 363 nm, respectively. 相似文献
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Shima?Mahmoudi Babak?Pourakbari Setareh?MamishiEmail author 《European cytokine network》2017,28(1):36-40
Tuberculosis control relies on the identification and preventive treatment of people who are latently infected with Mycobacterium tuberculosis (Mtb). PE/PPE proteins have been reported to elicit CD4 and/or CD8 responses either in the form of whole recombinant proteins or as individual peptides. Very few of the PE and PPE proteins have been previously tested for responses in patients with TB and healthy donors. This is the first study to evaluate the Interferon Gamma Release Assay (IGRA) after stimulation with PE35 and PPE68. The antigenspecific levels of IFN-γ following stimulation with QuantiFERON-TB gold in-tube (QFT-G-IT) antigens, and PE35 and PPE68 recombinant proteins were evaluated in 79 children and 102 adults, respectively. Using QFT-G-IT kit, latent tuberculosis infection (LTBI) was detected in 26 children (33%) and 41 adults (40%); IGRA following stimulation with PE35 and PPE68 recombinant proteins, was positive, respectively, in 36 (46%) and 32 (40.5%) children, respectively. In addition, 53 adults (52%) had positive results following stimulation with these two proteins. The sensitivity and specificity ofIGRAfollowing stimulation with recombinant PE35 in children were76%and 80%, and following stimulation with recombinant PPE68 in this group, it was 73% and 75%, respectively. Meanwhile, there is no gold standard test for LTBI. Our designed tests using PE35 and PPE68 PE/PPE proteins, two PE/PPE proteins not present in BCG vaccins, which elicit CD4 and/or CD8 responses, might be helpful for rapid diagnosis of TB and improve the detection of LTBI. However, further validation studies to determine the advantage of IGRAs using these proteins, alone or combined, are highly recommended. 相似文献
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Epidemiological evidence suggests the protective effect of vitamin D against colorectal cancer (CRC) and the polymorphisms
in vitamin D receptor (VDR) gene may influence the development of CRC. In this study the possible association of VDR FokI
and BsmI gene polymorphisms with CRC risk was examined. A total of 904 subjects, including 452 cases with CRC and 452 controls
were enrolled in this study. All 904 subjects were genotyped for VDR FokI and BsmI gene polymorphisms by PCR-RFLP method.
We observed no significant difference in genotype and allele frequencies between the cases with CRC and controls for the both
FokI and BsmI polymorphisms either before or after adjustment for confounding factors including age, BMI, sex, and smoking
status. Furthermore, no evidence for effect modification of the association VDR gene FokI and BsmI variants and CRC by BMI,
sex, or tumor site was observed. In addition, there was no significant difference in genotype and allele frequencies between
the normal weight (BMI <25 kg/m2) cases with CRC and overweight/obese (BMI ≥25 kg/m2) cases with CRC for the two SNPs. Our results do not lend support to the hypothesis that VDR gene FokI and BsmI polymorphisms
are associated with the risk of CRC. However, further studies are required to confirm this finding. 相似文献