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 degrees C and 25 degrees C 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 degrees C temperature-controlling system and within 36 h postmortem in 25 degrees C 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.
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