Comparison of histological findings and the results of energy-dispersive X-ray spectrometry analysis in experimental electrical injury. (March 2018)

• Record Type: Journal Article
• Authors: Tanaka, Naoko; Takakura, Ayaka; Miyatake, Nobuyuki; Jamal, Mostofa; Ito, Asuka; Kumihashi, Mitsuru; Tsutsui, Kunihiko; Ameno, Kiyoshi; Kinoshita, Hiroshi
• Is Part Of: Legal medicine. Volume 31(2018)
• Page Start: 20
• Page End: 23
• Publication Date: 2018-03
• Subjects: Electrical injury -- Current marks -- Energy-dispersive X-ray spectrometry (EDX) -- Metallization; Medical jurisprudence -- Periodicals; Forensic Medicine -- Periodicals; Médecine légale -- Périodiques; Medical jurisprudence; Periodicals; 614.1
• DOI: 10.1016/j.legalmed.2017.12.005
• Languages: English
• ISSNs: 1344-6223

Abstract

Graphical abstract: The X-ray intensity of copper (Kα) of the formalin-fixed tissues of the three groups. There are significant differences between the 5-s and control groups ( p < .05) and between the 10-s and control groups ( p < .05). Highlights: We compared the histological findings and the results of energy dispersive X-ray spectrometry (EDX) analysis to identify skin metallization in experimental electrical injury. We detected a relatively high peak of copper, which was used as an electrical conductor, in formalin-fixed skin samples of current exposure groups by EDX. Metallization was not observed in some samples of the current exposure groups on histological examination. EDX analysis is useful for the proof of metallization in electrocution, even where it is not identified on morphological examination. Abstract: The findings of histological examination and the results of energy-dispersive X-ray spectrometry (EDX) analysis were compared to identify skin metallization in experimental electrical injury. Rats were divided into three experimental groups (n = 5, each group): control, current exposure for five seconds, and current exposure for ten seconds. A relatively high peak of copper, which was used as an electrical conductor, was detected in formalin-fixed skin samples of the two current exposure groups by EDX. There was a significant increase of the specific X-ray intensity in the two current exposure groups compared to the control group. On histological examination, epidermal nuclear elongation was observed in all samples of the two current exposure groups. However, deposition of metal was observed in two samples of each current exposure group. Metallization is an important finding for the diagnosis of electrocution. The present results suggest that EDX analysis is useful for the proof of metallization in electrocution, even where it is not identified on morphological examination.