A gut bacterium's vitamin B5 output guards against metabolic disease
Luo Z, Xiao Z, Yuan T, Wang X, Shi C
Soil Health
The fiber-rich plants you grow and eat, think chicory root, Jerusalem artichoke, or garlic, may feed the exact gut bacteria that this study shows can churn out a protective vitamin for your metabolism.
Your gut is full of bacteria, and some of them can make vitamins your body needs. This study found one particular bacterium makes vitamin B5, which helps keep your gut lining strong and your metabolism healthy, and that a specific plant fiber can help these good bacteria thrive. It's a reminder that the plants on your plate don't just feed you, they feed a whole community of microbes working on your behalf.
Key Findings
Bacteroides fragilis produces pantothenic acid (vitamin B5) via the panC gene, confirmed through isotope tracing and germ-free mouse colonization
Colonization with normal (but not panC-deleted) B. fragilis restored vitamin B5 levels, preserved gut barrier integrity, and reduced endotoxemia in metabolic syndrome models
A plant-derived polysaccharide enriched vitamin B5-producing Bacteroides bacteria and restored colonic pantothenic acid levels
chevron_right Technical Summary
Scientists found that a gut bacterium called Bacteroides fragilis makes vitamin B5, which strengthens the gut lining and protects against metabolic syndrome. A plant-derived fiber can boost this helpful bacteria, pointing to a possible dietary strategy for better metabolic health.
Abstract Preview
Original paper
Gut commensal Bacteroides-derived pantothenic acid alleviates metabolic syndrome.
Pantothenic acid (PA), or vitamin B5, can be synthesized by gut commensals, but the contribution of microbial PA to metabolic health remains unclear. Here, we find that microbial PA supply is reduc...
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