硒和维生素E对大鼠心肌氧化损伤的保护作用  被引量:2

Protective effect of selenium and vitamin E on rat myocardial oxidative injury

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作  者:兰天[1] 闫丽佳 裴俊瑞[2] 高琳[2] 李兴洲[2] 刘明法[4] 李少臣[5] 周令望[2] 刘增超[6] 曾祥超[7] 王铜[1] 

机构地区:[1]哈尔滨医科大学中国疾病预防控制中心地方病控制中心克山病防治研究所病因流行病学卫生部重点实验室、黑龙江省普通高校病因学重点实验室,150081 [2]哈尔滨医科大学中国疾病预防控制中心实验室,150081 [3]北京市昌平区小汤山社区卫生服务中心计划免疫科 [4]天津市塘沽区疾病预防控制中心慢型病科 [5]浙江省嘉兴市秀洲区卫生监督所食品卫生科 [6]江苏省无锡市疾病预防控制中心防病科 [7]吉林大学白求恩医学院医学系2008级

出  处:《中国地方病学杂志》2012年第4期381-384,共4页Chinese Jouranl of Endemiology

基  金:国家自然科学基金(30471497);黑龙江省自然科学基金(ZJY04-07);黑龙江省教育厅科学基金(11511149)

摘  要:目的观察硒和维生素E(VitE)对大鼠血清心肌酶和抗氧化能力的保护作用。方法雄性Wistar大鼠80只,体质量70~90g。按体质量和2X2析因设计将大鼠分为4组:低硒低VitE组(饲料中含低硒酵母23.42%。不含VitE);低硒常VitE组(饲料中含低硒酵母23.42%、VitE160mg/kg);常硒低VitE组(饲料中含低硒酵母46.84%,水中含亚硒酸钠0.25mg/L,不含VitE);常硒常VitE组(饲料中含低硒酵母46.84%、VitE160mg/kg,水中含亚硒酸钠0.25mg/L),每组20只。大鼠饲用合成饲料,在喂养26周后腹腔麻醉,采集大鼠静脉血,制备血清,观察硒和VitE对大鼠心肌酶和心肌抗氧化能力的影响及二者的交互作用。血清肌酸激酶(CK)测定采用连续监测法,肌酸激酶同工酶(CK—MB)和乳酸脱氢酶(LDH)测定采用免疫抑制法,全血谷胱甘肽过氧化物酶(GSH—Px)测定采用二硫代二硝基苯甲酸(DTNB)法,血清超氧化物歧化酶(SOD)测定采用黄嘌呤氧化酶法,总抗氧化能力(T—AOC)测定采用络合物比色法,丙二醛(MDA)测定采用硫代巴比妥酸比色法,活性氧(ROS)测定采用比色法。结果大鼠血清CK、CK—MB、LDH和全血GSH—Px活力,血清T—AOC活力及MDA、ROS含量组间比较差异有统计学意义(F值分别为9.797、17.041、48.399,3.744、224.900、49.384、5.045,P均〈0.05)。CK、CK—MB、LDH活力与常硒常VitE组[(1056.80±250.98)、(721.70±129.98)、(404.65±72.49)U/L)]比较,2个低硒组[(1577.75±451.87)、(1239.15±344.99)、(884.25±133.84)U/L,(1474.21±398.38)、(1014.84±215.40)、(523.00±98.05)U/L]和常硒低VitE组[(1180.10±245.51)、(948.75±173.68)、(676.70±193.63)U/L]明显升高(P均〈0.05);MDA含量,与常硒常VitE组[(3.010±1.270)×10^3nmol/L]比�Objective To observe protective effects on rat serum cardiac enzymes and the antioxidant capacity of selenium and vitamin E. Methods According to body weight and 2 × 2 factorial design, eighty male Wistar rats were randomly divided into four groups: low selenium and low vitamin E group(feed containing 23.42% of the low selenium yeast, excluding vitamin E), low selenium and adequate vitamin E group (feed containing 23.42% of the low selenium yeast and vitamin E 160 mg/kg), adequate selenium and low vitamin E group (feed containing 46.84% of the low selenium yeast and sodium seleni 0.25 mg/L in water, excluding vitamin E), adequate selenium and adequate vitamin E group(feed containing 46.84% of the low selenium yeast, vitamin E 160 mg/kg and sodium selenite 0.25 mg/L in water), 20 rats every group. Rats were feed with synthetic feed, and given intraperitoneal anesthesia after 26 weeks of feeding. Blood was collected to observe the impact of selenium and vitamin E on rat cardiac enzymes and myocardial antioxidant capacity and their interactions. Serum creatine kinase (CK) was measured using the continuous monitoring method, creatine kinase isozymes (CK-MB) and lactate dehydrogenase (LDH) using the immune suppression method, the whole blood GSH-Px assay using the dithiobis nitrobenzoic acid (DTNB) method, serum superoxide dismutase (SOD) using the xanthine oxidase method, total antioxidant capacity(T-AOC) using the complex colorimetry method, the content of propylene glycol (MDA) using the thiobarbituric acid colorimetric method, and reactive oxygen species(ROS) using the colorimetric method. Results Group differences of serum CK, CK-MB, LDH, whole blood GSH-Px activity, serum T-AOC vitality, MDA and ROS content were statistically significant(F = 9.797, 17.041, 48.399, 3.744, 224.900, 49.384, 5.045, all P 〈 0.05). Compared with the two low selenium groups and one adequate selenium group, the vitalities of CK, CK-MB, LDH and the contents of MDA[ (1577.75 ± 45

关 键 词: 维生素E 血清 酶类 抗氧化能力 

分 类 号:R285.5[医药卫生—中药学]

 

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