[Correlation between postmortem intervals and the changes of electrical conductivity in vitreous humor in rabbits after death].
OBJECTIVE
To investigate the correlation between postmortem interval (PMI) and the changes of electrical conductivity in vitreous humor in rabbits after death.


METHODS
The changes of electrical conductivity in vitreous humor in rabbits were measured using the conductivity meter under 30 degrees C during 0-48 hours and 20 degrees C during 0-120 hours after death.


RESULTS
Electrical conductivity in vitreous humor in rabbits increased gradually under 30 degrees C and 20 degrees C from 0 to 48 hours and from 0-120 hours after death. The formulae of the relationship between PMI and conductivity under 30 degrees C and 20 degrees C were obtained by statistical analysis and the correlation coefficients were 0.970 and 0.983 (both P < 0.01), respectively.


CONCLUSIONS
The increase of electrical conductivity in vitreous humor in rabbits after death may be used as the relatively objective parameter for PMI estimation.
Zhou
Rui-Qing
RQ
West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China. rq1983@sina.com.cn
Zhang
Fu
F
Wang
Ye
Y
Liao
Zhi-Gang
ZG
D000818:Animals; D004553:Electric Conductivity; D005260:Female; D049429:Forensic Pathology; D008297:Male; D011180:Postmortem Changes; D011817:Rabbits; D011897:Random Allocation; D013997:Time Factors; D014822:Vitreous Body / Q000737:chemistry* / Q000503:physiopathology