The state of the resident intestinal microbial association and its relationship with concentrations of dioxins in blood lipids of firefighters

Relevance. Career firefighters are involved in extreme activities, and their functional reserves are probabilistically disturbed. Toxic products of combustion can significantly affect their health state.

Intention – To analyze and evaluate effects of blood lipid dioxins on the microbiome of the parietal intestinal flora in firefighters of the Federal Fire Service of the Emercom of Russia.

Methodology. Relationships between the microbiota composition and concentrations of blood lipid dioxins were analyzed in firefighters vs Emercom employees not involved in firefighting (control group).

Results and Discussion. Microbiota concentrations in firefighters were associated with levels of blood lipid dioxins. In firefighters with dioxins > 350 pg/g lipids in the blood, normal microflora concentrations significantly decreased and conditionally pathogenic microflora concentrations significantly increased compared to firefighters with lower concentrations of dioxins and the control group.

Conclusion. Disturbances in the microbiome of the parietal intestinal flora in the examined firefighters are related to exposure to toxic products of combustion, including dioxins, during firefighting. The microbiome disorders detected in firefighters can predict development of the digestive tract pathology, thus necessitating control and targeted correction of the somatic state and microecological status of this contingent.

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