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miRNA analysis in vitreous humor to determine the time of death: a proof-of-concept pilot study
被引:34
作者:

Odriozola, Adrian
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Univ Cantabria, Unit Legal Med, Santander 39011, Spain Univ Cantabria, Unit Legal Med, Santander 39011, Spain

Riancho, Jose A.
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Univ Cantabria, Dept Med, Hosp UM Valdecilla IFIMAV, Santander 39011, Spain Univ Cantabria, Unit Legal Med, Santander 39011, Spain

de la Vega, Rosa
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Univ Cantabria, Unit Legal Med, Santander 39011, Spain Univ Cantabria, Unit Legal Med, Santander 39011, Spain

Agudo, Gloria
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Univ Cantabria, Unit Legal Med, Santander 39011, Spain Univ Cantabria, Unit Legal Med, Santander 39011, Spain

Garcia-Blanco, Ana
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机构:
Univ Cantabria, Unit Legal Med, Santander 39011, Spain Univ Cantabria, Unit Legal Med, Santander 39011, Spain

de Cos, Elena
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机构:
Univ Cantabria, Unit Legal Med, Santander 39011, Spain Univ Cantabria, Unit Legal Med, Santander 39011, Spain

Fernandez, Fidel
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机构:
Univ Cantabria, Dept Pathol, Hosp UM Valdecilla, Santander 39011, Spain Univ Cantabria, Unit Legal Med, Santander 39011, Spain

Sanudo, Carolina
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机构:
Univ Cantabria, Dept Med, Hosp UM Valdecilla IFIMAV, Santander 39011, Spain Univ Cantabria, Unit Legal Med, Santander 39011, Spain

Zarrabeitia, Maria T.
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h-index: 0
机构:
Univ Cantabria, Unit Legal Med, Santander 39011, Spain Univ Cantabria, Unit Legal Med, Santander 39011, Spain
机构:
[1] Univ Cantabria, Unit Legal Med, Santander 39011, Spain
[2] Univ Cantabria, Dept Med, Hosp UM Valdecilla IFIMAV, Santander 39011, Spain
[3] Univ Cantabria, Dept Pathol, Hosp UM Valdecilla, Santander 39011, Spain
关键词:
miRNA;
Vitreous humor;
Death time;
Circadian rhythm;
MICRO-RNA;
EXPRESSION;
D O I:
10.1007/s00414-012-0811-6
中图分类号:
DF [法律];
D9 [法律];
R [医药、卫生];
学科分类号:
0301 ;
10 ;
摘要:
We hypothesized that miRNAs present in vitreous humor could be a sort of "biological black box," storing information about physiological and environmental circumstances at death. As a proof of concept, we analyzed the vitreous humor miRNA signature to explore its forensic potential applications, such as determining the time of the day at death. The miRNAs present in vitreous humor from individuals who died at daytime or at nighttime were analyzed by quantitative real-time polymerase chain reaction (qPCR) array. Target miRNAs showing significant differences between groups were studied in a larger sample by individual qPCR assays. After array analysis of miRNAs in seven samples, significant expression differences were detected between individuals who died at daytime and at nighttime regarding mir-34c, mir-541, mir-888, mir-484, and mir-142-5p. miR-222 appeared as the best reference gene. The results were replicated in 34 vitreous humor samples, and the day-night differences were confirmed for miR-142-5p and miR-541, suggesting that miRNA levels may be related to either the ambient light or the circadian clock at the time of death. There was no correlation between miRNA levels and the time elapsed after death, suggesting that they were stable at least for 24 h. In conclusion, this report supports the potential forensic utility of the analysis of miRNAs in the vitreous humor in applications such as determining the time of death.
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页码:573 / 578
页数:6
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