[家兔死后玻璃体液中PMI与镁、铁浓度关系的研究]

[Study on the relationship between PMI and the concentration of magnesium and iron in the vitreous humor of rabbit after death].

作者信息

Xu Xiao-ming, Gong Zhi-qiang, Sun Yue-gang

机构信息

Department of Forensic Medicine, Jiangxi Medical College, Nanchang 330006.

出版信息

Fa Yi Xue Za Zhi. 2002 May;18(2):65-6.

PMID:12596588

Abstract

OBJECTIVE

To seek a exact method of estimating postmortem interval (PMI).

METHODS

This study detected the concentration of magnesium (Mg) and iron (Fe) in vitreous humor of rabbit at 96 h after death and explored the relationship between their concentration and PMI using a method ICP-MS.

RESULTS

The concentra-tion of Mg in vitreous humor of rabbit at 48 h after death and Fe in vitreous humor of rabbit at 6-48 h after death were related to PMI significantly. The formulae of the relationship between PMI and Mg concentrations is y = 0.0738x2 + 0.6997x + 11.45 (within 48 h, R2 = 0.9119). The formulae of the relationship between PMI and Fe concentrations is y = 0.0411x2 - 0.3148x + 1.4113 (within 6-48 h, R2 = 0.9594).

CONCLUSION

The concentration of Mg in vitreous humor of rabbit at 48 h after death and Fe in vitreous humor of rabbit at 6-48 h after death may be as reference indicator to estimate PMI.

摘要

目的

寻找一种准确估计死后间隔时间（PMI）的方法。

方法

本研究检测了家兔死后96小时玻璃体液中镁（Mg）和铁（Fe）的浓度，并采用电感耦合等离子体质谱法（ICP-MS）探讨其浓度与PMI之间的关系。

结果

家兔死后48小时玻璃体液中Mg浓度以及死后6 - 48小时玻璃体液中Fe浓度与PMI显著相关。PMI与Mg浓度之间的关系公式为y = 0.0738x² + 0.6997x + 11.45（48小时内，R² = 0.9119）。PMI与Fe浓度之间的关系公式为y = 0.0411x² - 0.3148x + 1.4113（6 - 48小时内，R² = 0.9594）。