The relationship between adrenal gland morphometric changes and postmortem interval in rats: a stereological study.

Area of Science:

• Forensic Science
• Histology
• Stereology

Background:

• Accurate determination of the postmortem interval is critical in forensic investigations.
• Existing methods for estimating time since death have limitations.
• The adrenal gland's potential role in postmortem interval estimation requires further investigation.

Purpose of the Study:

• To investigate the reliability of adrenal gland volume and adrenal medulla chromaffin cell counts for determining the postmortem interval.
• To assess changes in these parameters at different time points after death.

Main Methods:

• 15 rats were divided into three groups and adrenal glands were collected at 0, 12, and 24 hours postmortem.
• Adrenal gland sections were stained with hematoxylin-eosin (HE).
• Stereological methods (Cavalieri's principle and optical fractionator) were used to calculate adrenal gland volume and chromaffin cell counts.

Main Results:

• Adrenal gland volume significantly increased at 12 and 24 hours postmortem compared to 0 hours (p<0.05).
• Statistically significant differences were observed in the total number of chromaffin cells between the groups (p<0.05).

Conclusions:

• Adrenal gland volume and adrenal medulla chromaffin cell counts are reliable indicators for determining the postmortem interval.
• These histological parameters show promise as valuable tools in forensic science for time of death estimation.