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Updated: May 12, 2026
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Acute Myocardial Infarction in Rats
Published on: February 16, 2011
Preliminary Study on Amino Acid Profiles in Postmortem Rat Myocardial Tissue.
Weisheng Huang1,2, Ying Dong2, Meichen Pan2
1Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, College of Basic Medical Science, China Three Gorges University, Yichang 443002, China.
ACS Omega
|May 11, 2026
Summary
Postmortem protein degradation can be tracked by analyzing amino acid changes in tissues. Specific amino acids show consistent increases, offering potential biomarkers for estimating the postmortem interval (PMI).
Area of Science:
- Forensic Science
- Biochemistry
- Molecular Biology
Background:
- Carcass decomposition involves complex chemical transformations, with protein degradation being a dominant postmortem process.
- Understanding postmortem protein degradation is crucial for forensic science, but current knowledge is limited.
- Metabolomics offers a powerful tool for analyzing metabolite changes, with recent applications in postmortem investigations.
Purpose of the Study:
- To quantitatively analyze amino acid changes in rat myocardial tissue.
- To assess the relationship between amino acid concentrations and the postmortem interval (PMI).
- To identify potential amino acid biomarkers for PMI estimation.
Main Methods:
- Targeted metabolomics using gas chromatography-mass spectrometry (GC-MS).
- Validation of the GC-MS method for quantitative amino acid analysis.
- Analysis of 14 specific amino acids in rat myocardial tissue over time.
Main Results:
- Significant correlations were found between 14 amino acids and early PMI.
- Neutral nonpolar amino acids generally increased from 0-6 days postmortem.
- Glutamic acid increased up to 10 days postmortem, and higher temperatures accelerated degradation.
Conclusions:
- Amino acid profiling in myocardial tissue can effectively assess postmortem protein degradation.
- Nine specific amino acids show potential as reliable biomarkers for PMI estimation.
- Environmental factors like temperature influence the rate of postmortem degradation.
