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High Dose Vitamin D supplementation alters faecal microbiome and predisposes mice to more severe colitis.


ABSTRACT: Vitamin D has been suggested as a possible adjunctive treatment to ameliorate disease severity in human inflammatory bowel disease. In this study, the effects of diets containing high (D++, 10,000?IU/kg), moderate (D+, 2,280 IU/kg) or no vitamin D (D-) on the severity of dextran sodium sulphate (DSS) colitis in female C57Bl/6 mice were investigated. The group on high dose vitamin D (D++) developed the most severe colitis as measured by blinded endoscopic (p?3 levels reduced by 63% in the D++ group and 23% in the D+ group after 6 days of DSS treatment. Thus, high dose vitamin D supplementation is associated with a shift to a more inflammatory faecal microbiome and increased susceptibility to colitis, with a fall in circulating vitamin D occurring as a secondary event in response to the inflammatory process.

SUBMITTER: Ghaly S 

PROVIDER: S-EPMC6068189 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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High Dose Vitamin D supplementation alters faecal microbiome and predisposes mice to more severe colitis.

Ghaly Simon S   Kaakoush Nadeem O NO   Lloyd Frances F   McGonigle Terence T   Mok Danny D   Baird Angela A   Klopcic Borut B   Gordon Lavinia L   Gorman Shelley S   Forest Cynthia C   Bouillon Roger R   Lawrance Ian C IC   Hart Prue H PH  

Scientific reports 20180731 1


Vitamin D has been suggested as a possible adjunctive treatment to ameliorate disease severity in human inflammatory bowel disease. In this study, the effects of diets containing high (D++, 10,000 IU/kg), moderate (D+, 2,280 IU/kg) or no vitamin D (D-) on the severity of dextran sodium sulphate (DSS) colitis in female C57Bl/6 mice were investigated. The group on high dose vitamin D (D++) developed the most severe colitis as measured by blinded endoscopic (p < 0.001) and histologic (p < 0.05) ass  ...[more]

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2023-11-20 | GSE247865 | GEO