中国农业科学 ›› 2005, Vol. 38 ›› Issue (12): 2536-2541 .

• 畜牧·兽医·资源昆虫 • 上一篇    下一篇

肉鸡心脏热应激损伤和热休克蛋白mRNA转录水平的相关性

孙培明,鲍恩东,王志亮   

  1. 南京农业大学动物医学院
  • 收稿日期:2005-03-02 修回日期:1900-01-01 出版日期:2005-12-10 发布日期:2005-12-10
  • 通讯作者: 鲍恩东

Relationship Between Heart Damages and HSPs mRNA in Persistent Heat Stressed Broilers

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  1. 南京农业大学动物医学院
  • Received:2005-03-02 Revised:1900-01-01 Online:2005-12-10 Published:2005-12-10

摘要: 通过分光光度计、组织病理学和荧光定量反转录PCR检测技术,研究肉鸡心脏热应激损伤和热休克蛋白mRNA 变化的相关性。试验结果显示,热应激过程中肌酸激酶和谷丙转氨酶的活性呈现波动性变化,肌酸激酶的变化更明显;心脏的组织病理学变化主要表现为心肌纤维变性和坏死;热应激过程中HSC70 mRNA也呈现波动性变化,而 HSP70 mRNA水平呈现上升趋势。结果提示,HSC70 mRNA与肌酸激酶活性变化呈现一定负相关,HSC70有可能作为心脏热应激损伤的标志物。

关键词: 肉鸡, 热休克蛋白, 荧光定量反转录PCR, 心脏, 热应激

Abstract: The relationship between heart damages and HSPs mRNA of heat stressed broilers was studied using spectrophotometer, histopathological technique and fluorescence quantitative reverse transcription PCR (FQ RT-PCR). The results showed that the activity of creatine kinase (CK) and glutamic-pyruvic transaminase (GPT) was fluctuant during the persistent heat stress. The major lesions in the myocardial fibers were degeneration and necrosis. The transcription of constitutive or cognate heat shock protein 70 (HSC70) mRNA changed. The transcription of heat shock protein 70 (HSP70) mRNA significantly increased in the course of persistent heat stress. The results also suggested that the change of HSC70 mRNA was contrary to the activity of CK, and the level of HSC70 mRNA transcription could used as a symbol of myocardial cell damages in the course of persistent heat stress.

Key words: Broiler, Heat shock protein (HSP), Fluorescence quantitative reverse transcription PCR(FQ RT-PCR), Heart, Heat stress