A Review on Microbial Species for Forensic Body Fluid Identification in Healthy and Diseased Humans

Overview

Journal Curr Microbiol

Specialty Microbiology

Date 2023 Jul 25

PMID 37491404

Authors

Mishka Dass

Yashna Singh

Meenu Ghai

Affiliations

Soon will be listed here.

Abstract

Microbial communities present in body fluids can assist in distinguishing between types of body fluids. Metagenomic studies have reported bacterial genera which are core to specific body fluids and are greatly influenced by geographical location and ethnicity. Bacteria in body fluids could also be due to bacterial infection; hence, it would be worthwhile taking into consideration bacterial species associated with diseases. The present review reports bacterial species characteristic of diseased and healthy body fluids across geographical locations, and bacteria described in forensic studies, with the aim of collating a set of bacteria to serve as the core species-specific markers for forensic body fluid identification. The most widely reported saliva-specific bacterial species are Streptococcus salivarius, Prevotella melaninogenica, Neisseria flavescens, with Fusobacterium nucleatum associated with increased diseased state. Lactobacillus crispatus and Lactobacillus iners are frequently dominant in the vaginal microbiome of healthy women. Atopobium vaginae, Prevotella bivia, and Gardnerella vaginalis are more prevalent in women with bacterial vaginosis. Semen and urine-specific bacteria at species level have not been reported, and menstrual blood bacteria are indistinguishable from vaginal fluid. Targeting more than one bacterial species is recommended for accurate body fluid identification. Although metagenomic sequencing provides information of a broad microbial profile, the specific bacterial species could be used to design biosensors for rapid body fluid identification. Validation of microbial typing methods and its application in identifying body fluids in a mixed sample would allow regular use of microbial profiling in a forensic workflow.

Citing Articles

Evaluation of the Microbiome Identification of Forensically Relevant Biological Fluids: A Pilot Study.

Gouello A, Henry L, Chadli-Benhemani D, Salipante F, Gibert J, Boutet-Dubois A Diagnostics (Basel). 2024; 14(2).

PMID: 38248064 PMC: 10814007. DOI: 10.3390/diagnostics14020187.

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