Abstract
The human gut environment undergoes substantial changes as a host ages. This investigation centered on the gut microbiome diversity among patients with severe motor and intellectual disabilities (SMID), examining the association between the gut microbiome composition and physical characteristics with varying levels of diversity. Fourteen subjects were investigated, with physical and defecation status, blood biochemical test, gut microbiome profiling, and fecal metabolites used to divide the patients into a high-diversity group (HD, eight patients) and a low-diversity group (LD, six patients). Findings indicated that the microbiome of the LD group showed delayed maturation reminiscent of neonates and lactating infants. Analysis of the fecal bile acids (BAs) revealed a markedly diminished proportion of deoxycholic acid in the secondary BAs in the LD group, suggestive of inadequate conversion from primary to secondary BAs. Furthermore, the LD group presented with loose stools. The LD group exhibited a higher degree of physical severity, with all patients bedridden and fed via gastrostomy with only enteral formula received. The composition of the gut microbiome and BAs in the LD group was found to differ from those of healthy individuals and the HD group, indicating a potentially immature gut environment for these individuals.
Published Version
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