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机构地区:[1]同济医科大学营养卫生教研室
出 处:《营养学报》1999年第2期181-185,共5页Acta Nutrimenta Sinica
基 金:国家"九五"攻关课题
摘 要:研究缺锌对3周龄大鼠的脂质过氧化和抗氧化系统的影响。方法:健康Wistar大鼠33只,雌雄各半,按体重随机分为A(缺锌组),B(自由进食对照组),C(配对喂养组)。每组11只,实验期40天。观察指标有血清和肝脏锌,肝脏超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)活性,血清和肝脏丙二醛(MDA),并采用电子自旋共振(electronspinresonance,ESR)及自旋捕捉技术直接测定大鼠肝组织中的氧自由基。结果:A组大鼠肝脏SOD、GSH-Px活性明显下降,血清和肝脏MDA含量显著升高,ESR图谱出现了N-H偶合的三组双峰波。结论:缺锌可以使大鼠脂质过氧化反应明显加强,而抗氧化能力明显减弱。Abstract Objective:To study the effect of Zn deficiency on lipid peroxidation and antioxidation in rats. Methods:33 Wistar rats, half in male and female, were randomly divided into 3 groups according to weights, i.e., A(Zn deficiency group), B(ad lib. group),C(pairfed group). The study lested 40 days. Their serum and liver Zn, liver SOD and GSHPx activities, serum and liver MDA were studied. Spin trapping techniques combined with ESR were used to capture and detect free radicals of liver. Results: In Zn deficient group, SOD and GSHPx activities of liver decreased significantly, while LPO contents of liver and serum increased markedly, and typical free radicals peaks in liver were shown by ESR spectra. Conclusion:Zn deficiency results in decrease of antioxidation capacity and increase of lipid peroxidation. Key words: zinc defficiency rats lrpid peroxidation antioxidant ESR
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