摘要
目的:研究大豆异黄酮对青年雌性大鼠的抗氧化作用并检验其安全性。方法:选用2月龄青年雌性大鼠50只,按体重随机分成5组,每组10只,分别为空白对照组(基础饲料);低(L—SI)、中(M—SI)、高剂量组(H—SI),其大豆异黄酮含量分别为100、200、300mg/kgbw;雌激素组(EC,己烯雌酚0.5mg/kg),实验周期为7周。观察各组大鼠实验前、后血清中超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、丙二醛(MDA)和谷胱甘肽过氧化物酶(GSH—PX)等活力变化以及子宫雌激素受体(ER—α)含量的变化,并做病理组织学检查,检验其安全性。结果:大豆异黄酮可显著提高各剂量组SOD活力(p〈0.05);低、中剂量组CAT活力升高显著,有显著性差异(p〈0.05),而在高剂量组没有显著差异;显著降低大鼠MDA含量;对GSH—PX活性的作用不显著。大豆异黄酮可上调大鼠子宫ER—α含量。高剂量组大鼠卵巢发生病理变化。结论:大豆异黄酮可增强青年雌性大鼠的抗氧化能力,其在100—200mg/kgbw剂量范围对大鼠无不良影响;而当剂量为300mg/kgbw时,对青年雌性大鼠的卵巢产生负面作用。
Objective:This topic mainly study the antioxidant effect and safety of soy isoflavone on young female rat. Methods: Fifty three-month-old young female rats were chosen to be randomly divided into five groups: control group (basal feed), low SI group (soy isoflavones 100 mg/kg bw), middle SI group (soy isoflavones 200 mg/kg bw), high SI group (soy isoflavones 300 mg/kg bw), estrogen (diethylstilbestrol 0.5 mg/kg). Superoxide dismutase (SOD), Catalase (CAT), methylenedioxyamphetamine (MDA) and the glutathione peroxidation (GSH-PX) were detected after experiment. The level of ER-α was also detected. Results: Results showed that the activity of SOD in all groups and CAT in low and middle SI group raised (p〈0.05), but the activity of CAT in high SI group was't significantly difference. Soy isoflavone could remarkably reduce the activity of MDA(p〈0.05). Soy isoflavone could raise the level of ER-α. From the pathologic examination, high SI group ovary had pathological change which showed that at 300 mg/kg bw, soy isoflavone showed side effect on high SI group ovary. Conclusions: Soy isoflavone could enhance the antioxidant ability of young female rat. It had no side effect to rats at 100-200 mg/kg bw. But it had side effect to rats' ovary at 300 mg/kg bw.
出处
《中国食品学报》
EI
CAS
CSCD
北大核心
2010年第5期78-82,共5页
Journal of Chinese Institute Of Food Science and Technology
基金
黑龙江省青年科学基金项目(QC08C42)
黑龙江省教育厅项目(11531214)