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Genetic Study Links Gut Motility to Vitamin B1, Sheds Light on IBS
A new study published on january 20 in Gut has revealed a surprising genetic link between vitamin B1 (thiamine) metabolism and gut motility - the process that moves food through the digestive system.Disruptions in this process can lead to conditions like constipation, diarrhea, and irritable bowel syndrome (IBS).Despite the prevalence of these conditions, the biological mechanisms controlling bowel movements remain incompletely understood.This research provides fresh genetic evidence and identifies vitamin B1 as a potential new pathway for examination.
Large-Scale Genetic Analysis Identifies Key Genes
The study, led by Mauro D’amato, Professor of Medical Genetics at LUM University and Ikerbasque Research Professor at CIC bioGUNE, analyzed genetic data and health questionnaires from 268,606 individuals of european and East Asian ancestry. Researchers used advanced computational methods to pinpoint genes and biological processes most strongly associated with stool frequency. The analysis identified 21 genomic regions influencing bowel movement frequency,including 10 previously unknown regions. Source
Confirmation of Known Gut Pathways
Importantly, many of the identified genetic signals corresponded to biological systems already known to regulate gut function. These included pathways involved in bile acid regulation – crucial for fat digestion and gut signaling – and nerve signaling controlling intestinal muscle contractions, specifically acetylcholine-related signaling. This alignment with existing knowledge strengthens the study’s findings. Source
Unexpected Role of Vitamin B1
The most striking discovery centered on two genes, SLC35F3 and XPR1, which are involved in thiamine transport and activation.Further analysis of dietary data from 98
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