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자료유형
학술저널
저자정보
저널정보
대한법의학회 대한법의학회지 대한법의학회지 제37권 제1호
발행연도
2013.1
수록면
19 - 26 (8page)

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Drowning is one of the most common causes accidental death worldwide, but its diagnosis remains a challenging task in forensic pathology. Several authors have suggested that diatom analysis be conducted via an enzymatic digestion method that uses proteinase K to provide objective evidence for drowning; we employed this method in our study because of its superior applicability as compared to the conventional disorganization methods. The purpose of this study was to examine the reclaiming ratio of diatoms from experimentally drowned animal organs, which could be influenced by diatom morphology. The authors injected 3 diatoms species (Cyclotella striata,Navicula incerta, and Pleurosigma angulatum) into a rat’s airway and compared the detection rate to investigate the factors that influence the sensitivity of diatom analysis. The results are as follows: (1) Average reclaiming ratio in the lungs was 81.07 for Navicula incerta, 48.26 for Cyclotella striata, and 5.35 for Pleurosigma angulatum. (2) The detection rates from the closed organs in 15 experimental animals were highest in the kidney (73%, 11/15), followed by the heart (67%, 10/15), brain (60%,9/15), and liver (53%, 8/15). (3) Two Cyclotella striata was detected in the kidney of postmortem control group which suggest the possibility of contamination during laboratory procedure. In conclusion, the authors propose that diatom size could be a significant influencing factor for diatom extraction from the organs of drowned bodies;therefore, the results of diatom analysis must be interpreted after considering the diatom population of the drowning medium at the scene and the possibility of contamination during the laboratory procedure.

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