非体外循环下冠状动脉旁路移植术患者不同抗血小板方案对乳内动脉桥血管通畅率影响的临床研究

目的:对比研究非体外循环下冠状动脉旁路移植术(OPCABG)后,分别运用单抗(阿司匹林)与双抗(阿司匹林+氯吡格雷)抗血小板治疗后,对远期乳内动脉桥血管通畅率的影响。方法:回顾性分析2005年01月至2005年12月,在安贞医院心脏外科固定手术组行OPCABG并顺利出院的230例患者的临床资料,并对其进行随访。结果:随访时间为150个月,随访期内心脏相关死亡54例(16.4%)。两组前降支通畅率分别为65.8%、66.4%(P>0.05)。结论:对于OPCABG的患者,无论给与双抗或单抗,其远期效果并无明显差异,但短期内前降支通畅率变化趋势,双抗组优于单抗组。     

针叶聚戊烯醇对大鼠慢性免疫性肝损伤所致肝纤维化的治疗实验研究

目的 观察针叶聚戊烯醇对大鼠慢性免疫性肝损伤致肝纤维化的治疗作用.方法 大鼠腹腔给予猪血清0.5ml,每周两次,建立慢性免疫性肝损伤模型.造模同时开始给药,给药组灌胃给予低、中、高剂量的针叶聚戊烯醇(10,20,40 mg·kg-1),模型组给予等体积生理盐水,每日给药1次,连续8周.末次给药后,动物禁食12 h,颈动脉采血,离心,取血清进行肝功能指标、氧化损伤指标及肝纤维化指标检测；无菌取脾,进行淋巴细胞增殖能力检测；各组取肝脏同一部位做病理组织学检查.结果 针叶聚戊烯醇中、高剂量组可以明显降低肝损伤大鼠血清透明质酸、Ⅳ型胶原和丙二醛水平以及脾淋巴细胞增殖能力,显著升高血清超氧化物歧化酶水平,有效改善肝功能指标和肝组织形态(P ＜0.05,P＜0.01).结论 针叶聚戊烯醇对大鼠慢性免疫性肝损伤导致的肝纤维化有明显治疗作用,有望作为抗肝纤维化的新药进一步研发.     

The effect of a grief support program on Turkish parents whose babies have died

The purpose of this study was to determine the effect of the Grief Support Program on the bereavement of parents whose babies had died. The sample consisted of 77 couples. The data was collected by the Texas Revised Inventory of Grief and the Coping Strategies Inventory. The intervention group was offered before, immediately after, and a month after death of their baby in accordance with the Grief Support Program guideline. The Grief Support Program did not affect grief intensity in the short term but had a positive effect 1 year later.     

Primary discussion about the application of GPS results to research of ground subsidence

本文利用球面通量均衡基准对全国的GPS垂向分量进行处理,给出了GPS点的垂向运动矢量分布图,显示垂向相对变化的分布与活动构造相关；2007-2009年的结果显示该时段可能存在大地震的影响；同时重点分析讨论了天津及其周边地区的地面沉降现状.结果表明采用文中的方法对GPS垂向分量进行处理是有效的,能够显示出地壳垂直差异运动的空间分布信息.     

Protective effects of resveratrol on small intestines against intestinal ischemia–reperfusion injury in rats

Background and Aim:  The aim of this study was to determine whether resveratrol could prevent intestinal tissue injury induced by ischemia–reperfusion (I/R).
Methods:  Intestinal I/R was induced in rats' intestines by 60-min occlusion of the superior mesenteric artery, followed by a 60-min reperfusion. Thirty rats were divided into three groups as follows: sham (group 1), control (group 2), and the treatment groups (group 3). The rats in the treatment group received resveratrol both before ischemia and before reperfusion. In all groups, serum aspartate aminotransferase, alanine aminotransferase, and lactate dehydrogenase levels were determined. Total antioxidant capacity (TAC), catalase, total oxidative status (TOS), oxidative stress index (OSI), and myeloperoxidase (MPO) in the intestinal tissue were measured. Intestinal tissue histopathology was also evaluated by light microscopy.
Results:  The levels of liver enzymes in group 3 were significantly lower than those in group 2 ( P  < 0.05). TAC in the intestinal tissue was significantly higher in group 3 than in group 2 ( P  < 0.05). TOS, OSI, and MPO in the intestinal tissue were significantly lower in group 3 than in group 2 ( P  < 0.05 for all). Histological tissue damage was milder in the resveratrol treatment group than in the control group.
Conclusions:  The results of this study indicated that resveratrol treatment limits the oxidative injury of the small intestine induced by I/R in rats. However, more precise investigations are required to evaluate the antioxidative effect of resveratrol on small intestine tissue damage in clinical and experimental models.     

Vasodilating mechanisms of testosterone.

The increased incidence of cardiovascular disease in man compared with premenopausal women suggests an unfavourable effect of male sex hormone testosterone on the cardiovascular system. However, numerous clinical and epidemiological studies reported a controversial relationship between testosterone and cardiovascular disease. Furthermore, an increasing amount of evidence indicate that testosterone can exert acute vasorelaxing effects, VIA non-genomic mechanisms. These effects involve primarily the vascular smooth muscle, without requiring the presence of endothelium, although an endothelial contribution is apparent in some studies. To date, the mechanism behind the vasodilatory action of testosterone is still under debate and might be through either activation of K (+) channels or blockade of Ca (2+) channels in vascular muscle cells. The purpose of this article is to review the evidence regarding the vasodilating effect of testosterone as well as its mechanism of action.     

表皮生长因子受体在老年大肠癌中的表达及临床意义

目的探讨表皮生长因子受体（EGFR）在老年大肠癌组织中的表达及其临床意义.方法采用免疫组化SABC法对87例大肠癌、14例大肠炎性黏膜和26例大肠腺癌样息肉进行检测。结果 EGFR在大肠炎性黏膜、腺瘤样息肉和大肠癌中阳性率分别为21.43%、46.15%和54.02%，其中RGFR在炎性黏膜中表达率明显低于腺瘤样息肉和大肠癌（P〈0.05）；EGFR表达与大肠癌浸润深度和淋巴结转移有相关性（P〈0.05）。结论：EGFR过度表达，在老年大肠癌的发生过程中可能起重要作用；检测EGFR对于指导临床治疗和判断预后有重要意义。