title: Prenatal methyl-donor supplementation augments colitis in young adult mice.
abstract: Inflammatory bowel diseases (IBD) have become highly prevalent in developed countries. Environmentally triggered exaggerated immune responses against the intestinal microbiome are thought to mediate the disorders. The potential dietary origins of the disease group have been implicated. However, the effects of environmental influences on prenatal developmental programming in respect to orchestrating postnatal microbiome composition and predilection towards mammalian colitis have not been examined. We tested how transient prenatal exposure to methyl donor micronutrient (MD) supplemented diets may impact predilection towards IBD in a murine dextran sulfate sodium (DSS) colitis model. Prenatal MD supplementation was sufficient to modulate colonic mucosal Ppara expression (3.2 fold increase; p=0.022) and worsen DSS colitis in young adulthood. The prenatal dietary exposure shifted the postnatal colonic mucosal and cecal content microbiomes. Transfer of the gut microbiome from prenatally MD supplemented young adult animals into germ free mice resulted in increased colitis susceptibility in the recipients compared to controls. Therefore, the prenatal dietary intervention induced the postnatal nurturing of a colitogenic microbiome. Our results show that prenatal nutritional programming can modulate the mammalian host to harbor a colitogenic microbiome. These findings may be relevant for the nutritional developmental origins of IBD.
authors: Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Department of Agriculture/ARS Children's Nutrition Research Center, Houston, Texas, United States of America.
authors: Sabina A
authors: SA
authors: Mir
authors: Dorottya
authors: D
authors: Nagy-Szakal
authors: Scot E
authors: SE
authors: Dowd
authors: Reka G
authors: RG
authors: Szigeti
authors: C Wayne
authors: CW
authors: Smith
authors: Richard
authors: R
authors: Kellermayer
mesh_terms: D000375:Aging; D000818:Animals; D000831:Animals, Newborn; D003092:Colitis / Q000139:chemically induced* / Q000382:microbiology / Q000473:pathology; D004032:Diet; D019587:Dietary Supplements / Q000009:adverse effects*; D005243:Feces / Q000382:microbiology; D005260:Female; D007413:Intestinal Mucosa / Q000382:microbiology / Q000473:pathology; D008297:Male; D008745:Methylation; D008810:Mice, Inbred C57BL; D064307:Microbiota; D047493:PPAR alpha / Q000378:metabolism; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects / Q000473:pathology*
chemical_list: D047493:PPAR alpha
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