[Relationship between Electrical Conductivity and Decomposition Rate of Rat Postmortem Skeletal Muscle].
Fa Yi Xue Za Zhi
; 33(1): 17-20, 2017 Feb.
Article
em Zh
| MEDLINE
| ID: mdl-29231002
ABSTRACT
OBJECTIVES:
To analyze the relationship among electrical conductivity ï¼ECï¼, total volatile basic nitrogen ï¼TVB-Nï¼, which is an index of decomposition rate for meat production, and postmortem interval ï¼PMIï¼. To explore the feasibility of EC as an index of cadaveric skeletal muscle decomposition rate and lay the foundation for PMI estimation.METHODS:
Healthy Sprague-Dawley rats were sacrificed by cervical vertebrae dislocation and kept at 28 â. Muscle of rear limbs was removed at different PMI, homogenized in deionized water and then skeletal extraction liquid of mass concentration 0.1 g/mL was prepared. EC and TVB-N of extraction liquid were separately determined. The correlation between EC (x1) and TVB-N (x2) was analyzed, and their regression function was established. The relationship between PMI (y) and these two parameters were studied, and their regression functions were separately established.RESULTS:
The change trends of EC and TVB-N of skeletal extraction liquid at different PMI were almost the same, and there was a linear positive correlation between them. The regression equation was x2=0.14x1-164.91(R²=0.982). EC and TVB-N of skeletal muscle changed significantly with PMI, and the regression functions were y=19.38x1³-370.68x1²+2 526.03 x1-717.06(R²=0.994), and y=2.56x2³-48.39x2²+330.60x2-255.04(R²=0.997), respectively.CONCLUSIONS:
EC and TVB-N of rat postmortem skeletal muscle show similar change trends, which can be used as an index for decomposition rate of cadaveric skeletal muscle and provide a method for further study of late PMI estimation.Palavras-chave
Texto completo:
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Mudanças Depois da Morte
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Músculo Esquelético
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Patologia Legal
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Condutividade Elétrica
Limite:
Animals
Idioma:
Zh
Revista:
Fa Yi Xue Za Zhi
Ano de publicação:
2017
Tipo de documento:
Article