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藏系绵羊心肌、骨骼肌MDH和LDH活力及LDH同工酶谱
引用本文:邓会平,郑玉才,王永,金素钰,梁梓,周静,苏永杰.藏系绵羊心肌、骨骼肌MDH和LDH活力及LDH同工酶谱[J].西南民族学院学报(自然科学版),2007,33(4):788-790.
作者姓名:邓会平  郑玉才  王永  金素钰  梁梓  周静  苏永杰
作者单位:西南民族大学生命科学与技术学院 成都610041
基金项目:国家民委重点项目(03N010)、四川省学术技术带头人培养资金重点项目“草地藏系绵羊肉用性能的改良与利用”的部分内容.
摘    要:为了探索草地藏系绵羊高原适应性的分子机制,对草地藏系绵羊骨骼肌、心肌中乳酸脱氢酶(LDH)、苹果酸脱氢酶(MDH)活力进行测定,并采用聚丙烯酰胺凝胶电泳分析了其心肌、骨骼肌、肝脏中LDH同工酶谱.结果显示:藏系绵羊心肌MDH/LDH活力比值极显著高于骨骼肌(P<0.01,LDH同工酶的表达在心肌、骨骼肌、肝脏中表现出组织特异性,LDH在肌肉中总活力最高,在电泳凝胶上表现为5条酶带,其中LDH5相对活力最强.

关 键 词:藏系绵羊  高原适应性  LDH  MDH  同工酶
文章编号:1003-2843(2007)04-0788-03
收稿时间:2007-07-04
修稿时间:2007年7月4日

Activities of MDH, LDH and LDH isoenzyme pattern in heart and skeletal muscle of Tibetan Sheep
DENG Hui-ping,ZHENG Yu-cai,WANG Yong,JIN Su-yu,LIANG Zi,ZHOU Jing,SU Yong-jie.Activities of MDH, LDH and LDH isoenzyme pattern in heart and skeletal muscle of Tibetan Sheep[J].Journal of Southwest Nationalities College(Natural Science Edition),2007,33(4):788-790.
Authors:DENG Hui-ping  ZHENG Yu-cai  WANG Yong  JIN Su-yu  LIANG Zi  ZHOU Jing  SU Yong-jie
Abstract:This paper is written to investigate the molecular mechanism of the ability of Tibetan sheep to adapt to high altitudes and low oxygen environment in its plateau habitat. The activities of malate dehydrogenase (MDH) and lactate dehydrogenase (LDH) are measured in the heart and skeletal muscle, and the LDH isoenzyme patterns in heart, liver, and skeletal muscle are determined by polyacrylamide gel electrophoresis (PAGE). The results show that the MDH/LDH ratio in heart is significantly higher than that of skeletal muscle (p<0.01. The expression of LDH isoenzyme differed among heart, liver and skeletal muscle, exhibiting tissue specificity. The highest activity of LDH is observed in skeletal muscle of Tibetan sheep, and shown as five bands of isoenzymes on gel, with LDH5 exhibiting the highest relative activity.
Keywords:Tibetan sheep  adaptation to plateau  lactate dehydrogenase  malate dehydrogenase  isoenzyme
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