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[On the relevance of examining the internal organs for the presence of diatom plankton after drowning at sea].
Sud Med Ekspert
December 2024
Bureau of Forensic Medical Examination, Petrozavodsk, Russia.
Objective: To establish the relevance of examining the internal organs for the presence of diatom plankton after drowning in the waters of the White Sea.
Material And Methods: We studied the biological material (fragments of lungs and kidneys) from the corpses of people found in the waters of the Kemskaya Bay and Onega Bay of the White Sea and waters from different areas of the White Sea for the presence of diatoms.
Results: In all cases of drowning in the waters of the White Sea (in the area of the city of Belomorsk and the Kem skerries), marine and freshwater diatoms were found in the lungs and kidneys of the deceased in quantities sufficient to diagnose death from drowning in water.
Integrating microbial profiling and machine learning for inference of drowning sites: a forensic investigation in the Northwest River.
Microbiol Spectr
January 2025
Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, Guangzhou, Guangdong, China.
Article Synopsis
- Drowning incident investigations face challenges in pinpointing the exact location, prompting a shift towards forensic microbiology for improved accuracy in site determination.
- The study analyzes microbial diversity in water and lung samples from drowned animals to identify distinct microbial signatures tied to different drowning sites, using advanced methods like 16S rDNA sequencing.
- Results show that machine learning models, particularly the Gradient Boosting Machine, can predict drowning locations with high accuracy (up to 95.07%), indicating the potential for integrating microbiome analysis with traditional forensic techniques to enhance investigation reliability.
The utility of drowning site inference through metagenomic diatom analysis.
Leg Med (Tokyo)
November 2024
Department of Forensic Medicine, Juntendo University School of Medicine, 2-1-1, Hongo, Bunkyo-Ku, Tokyo 113-8421, Japan; Department of Forensic Medicine, Saitama Medical University, 38 Morohongo, Moroyama, Saitama 350-0495, Japan; Tokyo Medical Examiner's Office, Tokyo Metropolitan Government, 4-21-18, Otsuka, Bunkyo-Ku, Tokyo 112-0012, Japan.
The diatom test is one of the methods used to diagnose drowning in forensic autopsies. Metagenomic diatom analysis may reveal where a drowning occurred. We evaluated whether metagenomic diatom analysis could be used to infer waters, watersheds, and geographic locations using 166 water samples from 64 locations (freshwater: 55; seawater: 9).
View Article and Find Full Text PDFComparative analysis of diatom testing and histopathological examination in lungs: An experimental study in Wistar rats.
Acta Vet Hung
December 2024
2Department of Pathology, Faculty of Medicine, University of Sarajevo, Sarajevo, Bosnia and Herzegovina.
Microscopic signs indicative of drowning are not specific to drowning but also to any other form of suffocation where mechanical obstruction is involved. Our study aimed to evaluate both macroscopic and microscopic findings across different groups sharing a common mechanism of death but differing causes and to compare the diatom test with pathohistological examination.Twenty-nine adult Wistar rats, weighing within recommended ranges, were divided into four groups (L1-L4).
View Article and Find Full Text PDFDisparities in unintentional drowning fatalities in Texas, USA, 1999-2020.
Inj Prev
July 2024
Trauma and Injury Research Center, Dell Children's Medical Center, Austin, Texas, USA
Background: Drowning is the third-leading cause of unintentional injury death worldwide. Although the USA as a whole bears a heavy burden, with approximately 4000 drowning fatalities annually, Texas stands out as a high-risk state for drowning due to its large population, suitable climate for year-round aquatic activities and availability of water-related recreational opportunities.
Methods: Using mortality data from the Centers for Disease Control and Prevention Wide-ranging ONline Data for Epidemiologic Research online database, this retrospective, cross-sectional study overviews the magnitude and patterns of fatal unintentional drownings among Texans from 1999 to 2020.
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