AHR and hyperinsulinemic hypoglycemia, familial, 4: In the intestinal epithelial cells specific aryl hydrocarbon receptor deficiency (AhrDeltaIEC) mice, not only was the overgrowth of H. hepaticus and H. ganmani detected in the gut, but it was also found that among the altered metabolites, the amount of isobutyric acid in the cecal of AhrDeltaIEC mice was increased compared to the control group (75).