硒对大鼠肝纤维化的防治作用

目的研究硒对实验性大鼠肝纤维化的防治作用．方法Ｗｉｓｔａｒ大鼠８０只，体重１８０ｇ～２２０ｇ，随机分为４组：①正常对照组；②病理模型组，用人血白蛋白诱导肝纤维化，第１步皮下注射致敏４５ｄ，随之静脉注射；③硒防治组，静脉注射４ｗｋ后，以硒溶液灌胃；④秋水仙碱治疗组，静脉注射人血白蛋白１２ｗｋ后，秋水仙碱灌胃．静脉注射结束后，治疗开始后６ｗｋ和１２ｗｋ采集肝组织标本，用光镜和电镜进行肝脏组织学检查．结果硒防治组肝脏纤维化的程度（Ⅰ级２只，Ⅱ级３只，Ⅲ级３只，Ⅳ级１只）明显低于病理模型组（Ⅱ级２只，Ⅲ级３只，Ⅳ级５只，Ⅴ级３只，Ｐ＜００１）硒防治组肝脏超微结构的变化也较轻微．结论硒对实验性大鼠肝纤维化有一定的预防和治疗作用．     

黑蔓不同部位微量元素的测定

为了了解吉林省长白县山区所产卫矛科雷公藤属植物黑蔓的药理作用,扩大它的药用部位和应用范围,我们从无机元素与中药药效有密切关系的角度出发,实验测出黑蔓含有Ba、Si、Cu、Fe、Zn、Sn、Co、Mn、Mg、Ca、Se等无机元素,本文重点对其中人体必需的微量元素Cu、Fe、Zn、Se作了定量分析。     

胶体硒免疫层析法检测抗-HIV(1+2)抗体的评价

目的 对检测抗-HIV抗体的胶体硒免疫层析法进行评价。方法 用胶体硒免疫层析试剂检测HIV国家参考品、已经确证的临床阴、阳性标本，评价此法的灵敏度、特异性。结果 快速胶体硒法试剂特异性较好，灵敏度尚可，可以满足快速筛查抗-HIV的要求。结论 此法可用于紧急情况下的抗-HIV的筛查，鉴于其灵敏度有待进一步提高，目前尚不能替代酶标法的检测。同时，该法不适用于献血者献血前的筛查。     

硒与艾滋病

本文通过——硒与艾滋病发病、硒与艾滋病发展、硒与艾滋病结局、硒与艾滋病诊断、硒与艾滋病防治五个方面论述了微量元素硒在艾滋病防治中的作用、意义和可行性。     

微置元素与动脉粥样硬化

本文综述了铁、铜、锌、铬、硒、锰、锗与动脉粥样硬化(AS)的关系,表明微量元素与AS密切相关,为攻克AS提示了一条新路.     

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。     

硒和维生素A对支原体肺炎的治疗效果观察

观察硒和维生素A(VA)对支原体肺炎的治疗效果.方法 采用双盲随机对照2×2析因实验设计,选择100例住院支原体肺炎患儿,分为补硒组26例,补VA组23例,补硒和VA组30例以及病例对照组21例,正常组21例.一次补硒量为1mg亚硒酸钠和/或15万单位VA,对照病例组给予常规治疗.结果 与对照组比,治疗后3个补充组的症状和体征缓解天数均有不同程度缩短(P<0.05),补硒组白细胞硒和谷胱甘肽过氧化物酶水平显著上升(P<0.05),补VA、补硒组血清VA水平上升(P<0.01),细胞免疫功能有所改善.结论 硒和VA有协同作用,补充硒或同时加VA,作为辅助治疗支原体肺炎的方法,安全、有效.     

酵母硒对老年性白内障的影响

酵母硒对老年性白内障的影响伍凤娟，史奎雄，谈松年，潘碧霞，许秀娴（上海第二医科大学医学营养教研室，上海２０００２５）关键词老年性白内障，硒，抗氧化ＡｎＡｐｐｒｏａｃｈｔｏｔｈｅＥｆｆｅｃｔｏｆＳｅｌｃｎｉｕｍｏｎＳｅｎｉｌｅＣａｔａｒａｃｔＷｕＦｅｎ...