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Desulfomonas pigra
Desulfomonas pigra is a species of sulfate-reducing bacteria (SRB) found in anaerobic environments, including the human gut. It plays a role in sulfur metabolism by reducing sulfate to hydrogen sulfide (H₂S). While hydrogen sulfide is a naturally occurring compound in the colon, elevated levels produced by SRBs like D. pigra can disrupt intestinal barrier function and contribute to gastrointestinal inflammation or discomfort. Increased abundance of Desulfomonas pigra may indicate an overgrowth of sulfur-reducing microbes, potentially associated with diets high in sulfur-containing foods or imbalances in gut microbiota.
Description
What is Desulfomonas pigra?
It is a sulfate-reducing bacterium in the gut that produces hydrogen sulfide as part of its metabolism.
Why is it measured in stool analysis?
To evaluate levels of sulfur-reducing bacteria that may contribute to gut dysbiosis or inflammation.
What does a high level of Desulfomonas pigra suggest?
It may indicate excess sulfur metabolism in the gut and a potential imbalance in microbial composition.
Can Desulfomonas pigra be harmful?
In elevated amounts, it can produce excessive hydrogen sulfide, which may impair gut lining and promote inflammation.
