全文获取类型
收费全文 | 239篇 |
免费 | 8篇 |
专业分类
妇产科学 | 4篇 |
基础医学 | 27篇 |
临床医学 | 27篇 |
内科学 | 96篇 |
皮肤病学 | 4篇 |
神经病学 | 60篇 |
特种医学 | 1篇 |
外科学 | 10篇 |
综合类 | 3篇 |
预防医学 | 4篇 |
眼科学 | 2篇 |
药学 | 5篇 |
肿瘤学 | 4篇 |
出版年
2022年 | 3篇 |
2021年 | 1篇 |
2020年 | 3篇 |
2019年 | 13篇 |
2018年 | 11篇 |
2017年 | 3篇 |
2016年 | 6篇 |
2015年 | 3篇 |
2014年 | 12篇 |
2013年 | 15篇 |
2012年 | 28篇 |
2011年 | 27篇 |
2010年 | 15篇 |
2009年 | 5篇 |
2008年 | 13篇 |
2007年 | 17篇 |
2006年 | 12篇 |
2005年 | 8篇 |
2004年 | 11篇 |
2003年 | 13篇 |
2002年 | 9篇 |
2001年 | 5篇 |
2000年 | 2篇 |
1999年 | 4篇 |
1998年 | 2篇 |
1995年 | 1篇 |
1992年 | 3篇 |
1980年 | 2篇 |
排序方式: 共有247条查询结果,搜索用时 15 毫秒
51.
52.
53.
54.
55.
Reszko AE Berson D Lupo MP 《Obstetrics and Gynecology Clinics of North America》2010,37(4):547-69, viii
Cosmeceuticals are topically applied products that are more than merely cosmetic, yet are not true drugs that have undergone rigorous placebo controlled studies for safety and efficacy. There are many review articles that outline the theoretical biologic and clinical actions of these cosmeceuticals and their various ingredients. This article reviews how to incorporate various cosmeceuticals into the treatment regime of patients, depending on the diagnosis and therapies chosen. The practical application of when, why, and on whom to use different products will enable dermatologists to improve the methodology of product selection and, ultimately, improve patient's clinical results. 相似文献
56.
Haikel Dridi Gaetano Santulli Jessica Gambardella Stanislovas S. Jankauskas Qi Yuan Jingyi Yang Steven Reiken Xujun Wang Anetta Wronska Xiaoping Liu Alain Lacampagne Andrew R. Marks 《The Journal of clinical investigation》2022,132(4)
Patients with heart failure (HF) have augmented vascular tone, which increases cardiac workload, impairing ventricular output and promoting further myocardial dysfunction. The molecular mechanisms underlying the maladaptive vascular responses observed in HF are not fully understood. Vascular smooth muscle cells (VSMCs) control vasoconstriction via a Ca2+-dependent process, in which the type 1 inositol 1,4,5-trisphosphate receptor (IP3R1) on the sarcoplasmic reticulum (SR) plays a major role. To dissect the mechanistic contribution of intracellular Ca2+ release to the increased vascular tone observed in HF, we analyzed the remodeling of IP3R1 in aortic tissues from patients with HF and from controls. VSMC IP3R1 channels from patients with HF and HF mice were hyperphosphorylated by both serine and tyrosine kinases. VSMCs isolated from IP3R1VSMC–/– mice exhibited blunted Ca2+ responses to angiotensin II (ATII) and norepinephrine compared with control VSMCs. IP3R1VSMC–/– mice displayed significantly reduced responses to ATII, both in vivo and ex vivo. HF IP3R1VSMC–/– mice developed significantly less afterload compared with HF IP3R1fl/fl mice and exhibited significantly attenuated progression toward decompensated HF and reduced interstitial fibrosis. Ca2+-dependent phosphorylation of the MLC by MLCK activated VSMC contraction. MLC phosphorylation was markedly increased in VSMCs from patients with HF and HF mice but reduced in VSMCs from HF IP3R1VSMC–/– mice and HF WT mice treated with ML-7. Taken together, our data indicate that VSMC IP3R1 is a major effector of increased vascular tone, which contributes to increased cardiac afterload and decompensation in HF. 相似文献
57.
58.
59.
Błażej Głowicki Paweł T. Matusik Krzysztof Plens Anetta Undas 《The Canadian journal of cardiology》2019,35(5):634-643
Background
It is unclear whether a prothrombotic state occurs in atrial fibrillation (AF) with low stroke risk.Methods
We studied 118 patients with AF with the Congestive Heart Failure, Hypertension, Age (≥ 75 years), Diabetes, Stroke/Transient Ischemic Attack/Systemic Embolism, Vascular Disease, Age (65-74 years), Sex (Female) (CHA2DS2-VASc) score of 1 in men or 2 in women vs 52 patients with AF with the CHA2DS2-VASc score of 0 in men or 1 in women. Plasma clot permeability (Ks), a measure of fibrin clot density, and clot lysis time (CLT), endogenous thrombin potential (ETP), von Willebrand factor antigen, and plasminogen activator inhibitor-1 were evaluated in nonanticoagulated subjects.Results
Patients with the CHA2DS2-VASc score of 1 (beyond sex), compared with those with 0, had lower Ks, prolonged CLT, increased ETP, von Willebrand factor antigen, and plasminogen activator inhibitor-1 (all P < 0.001), without any sex-dependent differences. Heart failure (odds ratio [OR]: 10.28; 95% confidence interval [CI]: 2.32-45.41), age 65-74 years (OR: 4.37; 95% CI: 1.76-10.83), and hypertension (OR: 5.03; 95% CI: 1.81-13.94) were independently associated with low Ks (the lowest quartile, ≤ 6.4 × 10?9 cm2), whereas only age 65-74 years (OR: 3.33; 95% CI: 1.59-6.96) significantly predicted prolonged CLT (the top quartile, ≥ 108 minutes). Age 65-74 years (OR: 5.21; 95% CI: 2.12-12.80), heart failure (OR: 6.58; 95% CI: 1.49-29.06), and hypertension (OR: 4.33; 95% CI: 1.54-12.15) were independently associated with high ETP (the top quartile, ≥ 1681.3 nM × minutes).Conclusions
A prothrombotic state (increased thrombin generation, denser fibrin clots, impaired fibrinolysis, and endothelial injury) characterizes patients with AF with 1 additional clinical stroke risk factor (beyond sex), with age 65-74 years being particularly associated with prothrombotic indices. 相似文献60.