【摘要】 目的 :研究短期糖尿病雄性大鼠前列腺氧自由基和抗氧化物酶的动态变化。方法 :4 8只Wistar雄性大鼠随机分为 6组 (每组 8只 )。1组腹腔注射枸椽酸缓冲液作为正常对照组 ,其余 5组腹腔注射链脲菌素 (STZ)制成糖尿病模型 ,分别观察 1d (D1)、3d (D3 )、5d (D5)、7d (D7)和 14d (D14 ) ,取前列腺组织制备组织匀浆 ,分别测定组织中超氧化物歧化酶 (SOD)、丙二醛 (MDA)、谷胱甘肽 (GSH)、谷胱甘肽转移酶 (GST)、谷胱甘肽过氧化物酶 (GSH -px)、一氧化氮 (NO)及一氧化氮合酶 (NOS)的水平。结果 :糖尿病组前列腺MDA ,GSH -px和NO水平显著高于正常组 ;SOD、GSH、GST和NOS水平呈现先升高后下降的趋势。结论 :短期糖尿病雄性大鼠前列腺组织处于氧化应激状态。更多还原

【Abstract】 AIM: To study the dynamic changes of free radicals and antioxidative system of prostate in rats with short-term diabetes. METHODS: 48 Wistar male rats were divided into 6 groups at random (8 rats in each group). One group were injected(ip) with sodium citrate buffer to be the control group, the other 5 groups were injected (ip) with steptozocin(STZ) 60mg/kg body weight which were called diabetes group. Rats were killed after 1, 3, 5, 7 and 14 days; superoxide dismutase(SOD), malondialdehyde(MDA), glutathione(GST), glutathione s-transferase(GST), glutathione peroxidase(GSH-px), nitric oxide (NO) and nitric oxide synthase(NOS) of prostate were examined. RESULTS: The levels of MDA, GSH-px and NO in prostate homogenate of diabetes group were higher evidently as compared with control levels. The activities of SOD, GST, NOS and the levels of GSH in prostate homogenate were increased obviously after injection of STZ with control levels, then returned near to control values. CONCLUSION: The evidences mentioned above indicate that high-level of free radicals and decrease in antioxidative system rendere the prostate cells to be in oxidative stress.更多还原