L-肌肽对大鼠硒性白内障的影响

Objective To explore the effect of L-canosine in preventing and treating rat cataract induced by sodium selenite. Methods This was an experimental study. Cataract was induced in the rats by sodium selenite. Rats were divided into 3 groups and each group has 3 ones. L-canosine eye drops (50 g/L or 20 g/L) and 0.9% normal saline were respectively instilled to the rat eye for 3 weeks and examined. L-canosine was added to the medium of cultured rat cataract lens at 1.00, 0.10 and 0.01 g/L for 1 week and then examined. Cataract lens were studied by using two-dimensional eletrophoresis. Results One week after instillation of L-canosine, the scores of rat cataract were 2.22±0.65, 2.39±0.98 and 2.83±0.38 in 50 g/L, 20 g/L L-canosine and control groups, respectively. The lesion in 50 g/l, L-canosine group was lighter than that of the control group. There was significant difference between these two groups (P=0.013). On the 2nd and 3rd weeks, there was no difference among these three groups. After 1 week for culturing cataract lens, there was no difference between these three groups. The results of two-dimensional eletrophoresis showed that the protein number was 182 and 161 in the L-carnosine and control groups, respectively. High molecular weight protein decreased and low molecular weight protein increased in L-carnosine group. Conclusions L-carnosine at 50 g/L could restrain the development of early stage rat cataract. L-camosine could modulate the rat lens protein in vitro, but could not affect lens cataract scores.     

硒抑制镍诱导的人肺成纤维细胞的DNA损伤

目的　探讨三氧化二镍(Ni2O3)对人肺成纤维细胞(human lung fibroblasts,HLF)的DNA损伤作用以及Na2SeO3的保护作用。方法　应用单细胞凝胶电泳(single cell gel electrophoresis,SCGE)检测DNA损伤。结果　Ni2O3 处理HLF细胞4 h,SCGE检测出DNA损伤程度高于对照组,差异有显著性(P<0.01)。而Ni2O3 Na2SeO3 处理组DNA损伤程度低于Ni2O3 组,差异有显著性(P<0.01)。结论　硒可抑制镍诱导的人肺成纤维细胞的DNA损伤。     

病毒性脑炎的临床诊治现状及存在的问题

神经系统病毒感染性疾病或神经病毒病是病毒感染性疾病或病毒病中的一部分。病毒性脑炎是中枢神经系统病毒感染性疾病中一具有重要代表性的急性神经病毒病。本拟初探病毒性脑炎的临床相关问题，谨供参考并祈指正。     

骨质疏松药唑来膦酸每年输注1次即可有效预防骨折

骨质疏松症是全球老年人的一种常见病，妇女尤为突出。患者常发生骨密度降低和蛋白成分减少，骨的正常结构和强度被破坏，骨折的风险增加。据估计，仅美国就有1000万人罹患骨质疏松症，其中大约超过一半的50岁以上的女性至少发生过一次骨折。但在治疗上，目前尚无一种非常理想的药物。     

用酶联免疫吸附术观察向附睾注射鱼肝油酸钠后抗精子抗体的变化

本研究用酶联免疫吸附术观察8只家兔在附睾注射鱼肝油酸钠后血清及精浆中的抗精子抗体。血清抗精子抗体阳性率为37.5～50.0%,最早检出率为术后2个月,6～7月达高峰。精浆抗精子抗体阳性率为25%,最早检出率为术后4个月,且此时己达高峰。与输精管结扎资料相比,发现血清抗精子抗体检出率偏低,而精浆相应抗体偏高,表明向附睾注射鱼肝油酸钠引起的免疫反应有别于结扎,以生殖道局部为主。     

玻璃酸钠治疗膝骨关节炎疗效观察

骨关节炎 (ＯＡ)是中年人常见的关节疾病 ,而膝关节是最容易受累的关节之一。治疗ＯＡ方法较多 ,(包括 :药物、理疗、手术 )大多只能缓解症状 ,不能阻止疾病的进展。玻璃酸 (ＳＨ) ,为关节滑液的主要成分 ,在关节腔内起润滑、扩散屏障和缓冲应力的作用 ,已用于治疗ＯＡ。我院骨科门诊 ,应用ＳＨ钠膝关节腔内注射治疗 82例膝ＯＡ患者 ,经临床观察 ,疗效满意 ,现报告如下。1　资料与方法1·1　病例选择　膝ＯＡ患者 82例 ,男 2 5例 ,女 5 7例 ,年龄 4 5～ 71岁 ,平均 5 6 5岁 ,病程 6个月～ 10年 ,平均 3 2年。所有病人均经Ｘ线拍片证实患有…