法医学杂志 ›› 2010, Vol. 26 ›› Issue (6): 425-427.DOI: 10.3969/j.issn.1004-5619.2010.06.006

• 论著 • 上一篇    下一篇

小鼠肝组织GAPDH mRNA降解与死亡时间关系

武红艳,王克杰,张  林,郭利伟,郭娟宁,樊爱英   

  1. (新乡医学院 基础医学院法医学教研室,河南 新乡 453003)
  • 发布日期:2010-12-25 出版日期:2010-12-28
  • 通讯作者: 通信作者:樊爱英,女,教授,主要从事法医病理学和法医临床学的教学、科研及检案工作;E-mail:fay1965@163.com
  • 作者简介:武红艳(1979—),女,河南新乡人,讲师,主要从事法医遗传学研究;E-mail:whyfine@163.com
  • 基金资助:

    河南省教育厅自然科学基金资助项目(2008A340001)

The Relationship between GAPDH mRNA Degradation in the Mouse Liver and Postmortem Interval

WU HONG-YAN, WANG KE-JIE, ZHANG LIN, GUO LI-WEI, GUO JUAN-NING, FAN AI-YING   

  1. (Department of Forensic Medicine, School of Basic Medical Science, Xinxiang Medical University, Xinxiang 453003, China)
  • Online:2010-12-25 Published:2010-12-28

摘要: 目的 探讨小鼠在不同的死亡方式下肝组织管家基因甘油醛-3-磷酸脱氢酶(glyceraldehyde-3-phosphate dehydrogenase,GAPDH) mRNA降解与死亡时间(postmortem interval,PMI)的关系。 方法 将60只NIH小鼠分别采用窒息法和断颈法处死,分别置于10 ℃和25 ℃温控系统内,利用两步法RT-PCR技术和核酸蛋白测定仪检测小鼠肝组织中GAPDH mRNA在死后0~48 h的降解情况。 结果 在10 ℃温控系统内的小鼠死后0~48 h及25 ℃温控系统内的小鼠死后0~36 h肝组织均可检测到GAPDH mRNA,且其扩增产物呈规律性下降趋势。 结论 小鼠死亡后肝组织GAPDH mRNA降解与PMI呈负相关,可为PMI推断提供一种新的观测指标。

关键词: 法医病理学, 甘油醛-3-磷酸脱氢酶类, 肝, 逆转录聚合酶链反应, 死亡时间, 小鼠

Abstract: Objective To explore the relationship between degradation of glyceraldehyde-3-phosphate dehydrogenase(GAPDH) mRNA in the mouse liver and postmortem interval(PMI). Methods Sixty NIH mice were sacrificed by cervical dislocation and suffocation, and then placed into 10 ℃ and 25 ℃ temperature-controlling systems. The changes of GAPDH mRNA in the liver were detected by two-step fluorimetric reverse transcriptase polymerase chain reaction(RT-PCR) technique and nucleic acids protein cryoscope from 0 to 48 h postmortem. Results In the mouse liver, the amplification products of GAPDH mRNA could be examined within 48 h postmortem in 10 ℃ temperature-controlling system and within 36 h postmortem in 25 ℃ temperature-controlling system. The amplification products showed a decreasing tendency. Conclusion Degradation of GAPDH mRNA in the mouse liver is negative correlation with PMI. GAPDH mRNA could be a new marker for estimation of PMI.

Key words: forensic pathology, glyceraldehyde-3-phosphate dehydrogenases, liver, reverse transcriptase polymerase chain reaction, postmortem interval, mice

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