Changes of biomechanical properties of soft tissues in underwater corpse for postmortem interval estimation / 法医学杂志
Journal of Forensic Medicine
;
(6): 6-11, 2012.
Artigo
em Chinês
| WPRIM
| ID: wpr-983703
ABSTRACT
OBJECTIVE@#To explore the postmortem changes of biomechanical properties of underwater corpses and value for estimating postmortem interval.@*METHODS@#SD rats were sacrificed by cervical vertebra dislocation and stored in the water at constant temperature. The vessel wall, skin, muscle, small intestine and colon were sampled at different postmortem time points (0h, 6h, 12h, 18h, 24h, 30h, 36h, 42h, 48h, 60h, 72h, 96h, 120h, 144h, 168h, 192h). The biomechanics properties of different soft tissues including ultimate load, strain, maximum stress were measured by electronic universal material testing machine.@*RESULTS@#Except for the vessel wall, the biomechanics properties of skin, muscle, small intestine and colon showed linear decrease gradually after death. Each tissue displayed its obvious "window period" for PMI estimation.@*CONCLUSION@#The time-sequential changes of biomechanical property parameters of soft tissue in underwater corpses are significantly correlated with PMI and it could be a simple and quantitive new technology for estimating PMI. The specific heat capacity of the heat-eliminating medium around the corpses probably is one of the physical factors to influence algor mortis, autolysis, putrefaction and biomechanics properties.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Mudanças Depois da Morte
/
Pele
/
Estresse Mecânico
/
Fatores de Tempo
/
Fenômenos Biomecânicos
/
Cadáver
/
Suporte de Carga
/
Ratos Sprague-Dawley
/
Patologia Legal
/
Tecido Elástico
Limite:
Animais
Idioma:
Chinês
Revista:
Journal of Forensic Medicine
Ano de publicação:
2012
Tipo de documento:
Artigo
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