地杨桃中微量元素含量测定

采用ICP—MS法和原子荧光光度法测定了地杨桃中铁、锌、铜、锰、锶、铬、钴和硒微量元素含量，为对其进行科学研究提供依据。     

造福于民的微量元素科学

文章概括了人体必需微量元素的生理功能；论述了近年迅速崛起的微量元素科学，是一门方兴未艾的综合性边缘学科，它是生物学、医学、农学、营养学及生命科学的前沿，与人的生、老、病、死休戚相关。     

硒与人体健康

本文着重综述了微量元素硒的功能及对人体健康的影响、硒相关疾病与临床应用现状，并介绍了硒缺乏与硒中毒研究进展。     

从微量元素角度探讨鸦胆子油乳剂抗癌机理

鸦胆子油乳剂是一种从中药鸦胆子提取的抗癌药品，作者通过微量元素分析，认为其抗癌机理与纠正癌症患者Cu／Zn的比值失衡，以及含有丰富的Ge有关。     

硒蛋白对糖尿病小鼠血糖、Ca~(2 )转运以及NO系统影响的实验研究

目的研究硒蛋白对糖尿病小鼠血糖、Ca2 转运及NO系统的调控作用。方法体重(203±17)g昆明种雄性小鼠,腹腔注射200mgkgbw,2%的四氧嘧啶造糖尿病(DM)模型。实验分6组正常对照组(Ⅰ)、正常 硒蛋白组(Se100μgkgbw)(Ⅱ)、糖尿病对照组(Ⅲ)、DM 硒蛋白低剂量组(Se100μgkgbw)(Ⅳ)、DM 硒蛋白高剂量组(Se300μgkgbw)(Ⅴ)、DM 亚硒酸钠组(Se100μgkgbw)(Ⅵ)。结果Ⅴ组血糖(204±63)mmolL明显低于Ⅲ组(453±33)mmolL,P<005;肾脏三磷酸腺苷酶(Ca2 ATPase)活性,Ⅴ组090±05明显高于Ⅲ组(035±01)μmol(h·mgprot),P<005;一氧化氮合酶(NOS)活性,Ⅴ组(250±43)Uml明显低于Ⅲ组(352±44)Uml,P<005。结论补硒剂量为Se300μgkgbw的硒蛋白能够显著的降低糖尿病小鼠血糖、提高肾脏Ca2 ATPase活性和降低血浆NOS活性。     

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.     

心血管疾病与铬

铬是人体必需的微量元素，具有重要的生理功能。人体缺乏铬，会引起代谢失调和某些疾病。近年许多流行病学资料表明：铬与动脉粥样硬化、冠心病、高血压、脑血管病变等有关，人体内铬含量的多少与心血管疾病的发病率呈负相关；冠心病的严重程度随饮水中铬含量的上升而有所减轻；发生缺铬现象的年龄越小，患冠心病、高血压的年龄也越轻。     

菊花中微量元素对其抗炎作用的影响

研究表明,怀菊煎剂中Cu、Cr元素的溶出率高于毫菊,临床疗效优于毫菊。文章以菊花的抗炎作用为指标,在毫菊煎剂中加入一定量的Cu、Cr元素,以小白鼠、大白鼠做药理实验。结果表明,毫菊加微量元素后,抗炎作用明显增加,且加至怀菊水平者优于加过量者。证明形成怀菊优势的原因之一是微量元素。     

原子吸收光谱法测定中药中微量元素的含量

目的测定苦参、黄柏及黄柏胶囊中微量元素铜、铬的含量。方法采用火焰原子吸收光度法测定。结果该法的平均回收率在95.2%~104.8%之间,相对标准偏差在1.76%以下。结论该法结果可靠,方法简便,可用于实际样品的测定。     

结石病人应避免饮用矿泉水

很久以前人们就知道矿泉水能够饮用。有部分矿泉水因含有特殊的化学成分,故而能够起到治疗疾病的作用。现在用于医疗的矿泉水有氡泉、碳酸泉、铁泉、碘泉、溴泉、硅酸泉、重碳酸泉、硫酸盐泉等十余类矿泉水。一般低矿化度的矿泉水,含有对人体有益的成分,长期饮用对绝大多数人都能够起到一定的保健效果。饮用矿泉水还能补充一定的微量元素。但是部分结石病人则应该避免饮用矿泉水,因为结石病人饮用矿泉水会使过多的矿物质沉淀下来。而肾病、高血压、冠心病等患者也不宜长期饮用含钠高的矿泉水。由于现在桶装、瓶装矿泉水大多用臭氧消毒,对于…