Arsenic, a major environmental pollutant, is widely present in drinking
water, posing significant risks to human health. Prolonged exposure to arsenic
through contaminated water can lead to various severe diseases, including
cancers, cardiovascular disorders, kidney problems, and neurological
impairments.
Arsenic also disrupts metabolism, weakens the immune system, and
affects vital organ functions, further increasing health risks. When combined
with an infection caused by Helicobacter pylori (H. pylori), a
common bacterium that colonizes the stomach, it can significantly disturb the
gut microbiota and lead to metabolic disorders.
This study investigates the synergistic impact of arsenic exposure and H.
pylori infection on gut flora and liver function.
Helicobacter pylori and Arsenic Stress: What Impact on Health?
The study was conducted on male C57BL/6 mice, divided into three groups:
- Control
group;
- Arsenic-exposed
group;
- Combined
group, exposed to arsenic and infected with H. pylori.
The mice were treated with arsenic for 4 weeks, and H. pylori
infection was administered orally once a week for the combined group. Stool and
liver tissue samples were collected to analyze gut microbiota composition and
metabolic profiles using 16S rDNA gene sequencing and metabolomic analysis.
Statistical methods were used to evaluate the effects of arsenic and H.
pylori on gut flora and liver functions.
The study revealed that combined exposure to arsenic and H. pylori
induces significant changes in gut microbiota composition, affecting genera
such as Faecalibaculum and Ileibacterium.
These alterations
directly impact liver metabolism, particularly lipid and amino acid metabolism,
exacerbating arsenic-related metabolic disorders. Metabolomic analyses also
demonstrated significant alterations in liver metabolic profiles, including reduced
triglyceride levels, which could harm liver health.
Towards a Winning Strategy Against Arsenic and H. pylori
The findings suggest that H. pylori infection exacerbates the
imbalances in gut microbiota caused by arsenic exposure and alters hepatic
metabolism, thereby increasing the risk of liver diseases and other
complications. This study highlights the importance of exploring the
interactions between environmental factors, bacterial infections, and metabolic
health to develop more effective prevention and treatment strategies against
these combined risks.
