Abstract
Alterations in diet and gut microbial ecology underlie the pathogenesis of type 1 diabetes (T1D). In the non-obese diabetic (NOD) mouse, we found high concentrations of bacterial metabolites acetate and butyrate in blood and faeces correlated with protection from disease. We reconstituted germ free (GF) NOD mice with fecal bacteria from protected NOD mice fed with high acetate- and butyrate-yielding diets, to test whether the transferred gut microbiota protect against the development of T1D. GF NOD mice that received a microbiota shaped by high acetate- but not butyrate-yielding diet showed a marked protection against diabetes. This fecal transplantation assay demonstrated the potential for a dietary technology to reshape the gut microbiota that enables specific bacteria to transfer protection against T1D.
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