首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   80篇
  免费   2篇
  国内免费   1篇
耳鼻咽喉   5篇
儿科学   3篇
妇产科学   3篇
基础医学   6篇
口腔科学   6篇
临床医学   4篇
内科学   11篇
皮肤病学   1篇
神经病学   1篇
特种医学   3篇
外科学   20篇
综合类   1篇
预防医学   3篇
眼科学   3篇
药学   10篇
中国医学   1篇
肿瘤学   2篇
  2022年   2篇
  2021年   1篇
  2018年   3篇
  2017年   1篇
  2014年   2篇
  2013年   1篇
  2012年   2篇
  2011年   3篇
  2010年   2篇
  2009年   1篇
  2008年   2篇
  2007年   3篇
  2006年   6篇
  2005年   6篇
  2004年   15篇
  2003年   11篇
  2002年   6篇
  2001年   7篇
  2000年   2篇
  1999年   3篇
  1992年   1篇
  1914年   2篇
  1913年   1篇
排序方式: 共有83条查询结果,搜索用时 312 毫秒
1.
2.
The role of preliminary traction before closed reduction in the treatment of developmental dysplasia of the hip has been questioned by many authors lately. However, the studies advocating or opposing the use of this treatment modality include several other parameters besides traction. Thus, it is unclear whether the affection is the result of preliminary traction or concurrent variables such as the "human position." This study aimed to put forward the effect of preliminary traction as a single determinant of avascular necrosis. We had two groups of patients who had developmental dislocation of the hip. The first group consisted of 52 patients treated with preliminary traction before closed reduction and the other group comprised 40 patients treated with closed reduction without preliminary traction. Both groups were similar in age, gender, side, level of dislocation, and method and duration of immobilization. Three patients from the first group developed avascular necrosis, which was not statistically significant. Preliminary traction did not affect the rate of avascular necrosis.  相似文献   
3.
International Journal of Legal Medicine - It is extremely rare for table salt to be used to preserve a dead body in criminal cases. In the case presented here, after the death of his 85-year-old...  相似文献   
4.
Patients with schizophrenia are predisposed toward developing cardiovascular disease. Although neuroleptics affect the cardiovascular system, it is also important to consider the consequences of the disease itself such as lower physical activity due to living on disability pension, inadequate nutrition, and/or nicotine addiction, being more common among patients with schizophrenia versus the general population. All these factors combined lead to an increased risk of death caused by cardiovascular conditions in schizophrenic patients. Individuals receiving typical antipsychotic drugs have been reported to have elevated concentrations of antiphospholipid antibodies, including anticoagulants and anticardiolipin antibodies. The presence of both antibodies is associated with an increased risk for thromboembolism. It is also likely that mental illness is accompanied by increased procoagulant activity. Patients with acute psychosis have been shown to have a statistically significant increase in the concentrations of D-dimer, P-selectin, and in the expression of platelet glycoprotein IIb/IIIa receptors. Learning about causes and mechanisms of venous thromboembolism could help to reduce or neutralize the adverse effects of antipsychotic treatment and facilitate the identification of appropriate markers necessary to monitor changes and provide preventive care against hazardous and potentially fatal complications such as deep venous thrombosis and pulmonary embolism. Before atypical neuroleptic treatment is administered to hospitalized patients, all possible risk factors for thromboembolism should be considered to allow the application of lower risk drugs. Also, other preventive measures should be taken into account, including hydration, compression stockings, regular exercise of lower extremities, and low-molecular-weight heparin injections.  相似文献   
5.

Background

Both major depression and posttraumatic stress disorder (PTSD) are characterized by inflammation, increased concentration levels of proinflammatory cytokines, decreased neurogenesis followed by neuroprogression, as well as mitochondrial and the hypothalamic-pituitary-adrenal axis dysfunction. Elevated levels of oxidative stress caused by an increased activity of prooxidants over antioxidants are also observed. Based on several reports, depressive episodes can lead to the sensitization of immune-inflammatory pathways. Thus, depression, PTSD, and depression comorbid with PTSD are associated with immune-inflammatory markers. The study aimed at evaluating concentration levels of iNOS, HO-1, IL-33, and MIP-1β in depression with and without PTSD.

Methods

A total number of participants enrolled in the study was 460. Out of them, 420 subjects with various levels of depression severity constituted the study group (210 males and 210 females), and 40 subjects (20 males and 20 females) constituted the control group. Each study group comprised 60 patients (30 males and 30 females) with mild depression (MD), moderate depression (MOD), severe depression (SeD), MD and PTSD (MD + PTSD), MOD and PTSD (MOD + PTSD), SeD and PTSD (SeD + PTSD), and with PTSD alone. At 7:00 a.m., all patients had serum concentrations of iNOS, HO-1, IL-33, MIP-1β determined using ELISA.

Results

Both depression exacerbation and PTSD comorbidity led to elevated levels of iNOS, HO-1, IL-33, and MIP-1β.

Conclusion

Depression both with and without PTSD leads to elevated levels of inflammation and an oxidant/antioxidant imbalance. Alterations in both cytokines and oxidative stress are related to the mechanisms responsible for the development of depressive symptoms.  相似文献   
6.
To investigate the reason of high incidence of annual patients with tuberculosis (TB) in a military school previously known by screening tuberculin skin test (TST) and finding out the proportion of annual infection risk (PAIR), the prevalance of TB infection and the distribution for each grades. Our study is a cross-sectional epidemiologic study made about TB infection. TST were screened for all students in the school. 5 TU PPD was injected to every student and after 72 hours, the results were evaluated by measuring the diameter of enduration. Test was repeated after 10 days for negative reactions. Age, sex, the number of BCG wound, smoking and dwelling for last 5 years were asked from the students and their answers were recorded. More than 10 mm enduration for cases who had no BCG and 15 mm enduration for cases who had BCG were accepted positive. Chest roentgenogram was taken for each student enrolled into the study. Infection prevalance and PAIR were calculated after tests and measurements. The total number of students was 948. Of 917 (96.7%) were male and 31 (3.3%) were female. The mean age was 19.72 +/- 1.25. The mean of TST was 12.79 +/- 5.96 mm for all students. According to the number of BCG scar, the numbers of students, percentage and the mean of TST were like that 70 (7.3%) cases no BCG scar 8.41 +/- 7.87 mm, 393 (41.4%) students one BCG scar, 11.94 +/- 6.26 mm, 343 (36.1%) cases two BCG scars, 13.74 +/- 5.12 mm, 142 (14.9%) students three or more then three scars, 14.97 +/- 4.11 mm. In the students who had no BCG, TST positivity was 50%. TB infection prevalance of entire school and PAIR were 46% and 3.44% (respectively). In this study, we found that increased number of BCG wound associated with the increased diameter of TST enduration. The proportion of unvaccinated students was similar to the same age population in our country but it showed differences in the distribution of regions. The students who started first grade had serious TB infection risk in their first school year. We think that PAIR values derived from TST conversions done in high risky community by screening annual TST could show all aspects of TB infection risk in those community.  相似文献   
7.
8.
9.
10.
BACKGROUND: Low expression of p27, a cyclin-dependent kinase inhibitor, has recently been reported to be associated with poor prognosis of many tumors. Moreover, an inverse relationship between p27 expression and proliferation was also noted. Although accumulating data indicate a correlation between high proliferation rate and aggressive behavior of gastrointestinal stromal tumors, no conclusive correlation between p27 expression and either tumor recurrence or proliferation has been established yet in this disease. The aim of this study was to immunohistochemically investigate the association of p27 expression (as measured by the p27 labeling index: p27LI) with recurrence and proliferation (as measured by the Ki-67 labeling index: KLI) in gastrointestinal stromal tumors. METHODS: p27LI and KLI were investigated in tumor specimens from 50 patients diagnosed with gastrointestinal stromal tumors. Quantitative evaluations of p27LI and KLI were performed on tissue sections stained immunohistochemically with anti-p27 and anti-Ki-67 monoclonal antibodies. RESULTS: Both p27LI and KLI were associated with the presence of recurrence and high mitotic index. A significant inverse correlation was noted between p27LI and KLI (r = -0.82). The recurrence-free survival time was significantly shorter in patients with high KLI (> or = 10%), low p27LI (<18%), mitosis (> or = 4), and larger tumor size (> or = 5.2 cm). Multivariate analysis indicated that p27LI, KLI, and mitosis were independent predictors of recurrence-free survival. CONCLUSIONS: These findings support the view that p27LI is a reliable marker in predicting recurrence and recurrence-free survival in gastrointestinal stromal tumors. Moreover, the concordance of high KLI together with low p27LI, and vice versa, might allow us to measure the aggressiveness of these tumors.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号