Pancreatic impairment and Igf2 hypermethylation induced by developmental exposure to bisphenol A can be counteracted by maternal folate supplementation.
Level 5 - mechanism / opinion, no new human data
Preclinical animal (rat) study
PubMed 28165156 · doi:10.1002/jat.3430
What was done
Investigated the impact of developmental exposure to bisphenol A (BPA) on pancreatic function and DNA methylation patterns in rat offspring, and evaluated whether maternal dietary folate supplementation could counteract BPA-induced epigenetic alterations and endocrine dysfunction.
What was found
The abstract reports directional outcomes without specific numerical values. Developmental BPA exposure caused glucose intolerance, disrupted insulin secretion, impaired pancreatic beta-cell morphology and ultrastructure, and induced hypermethylation and reduced expression of insulin-like growth factor-2 (*Igf2*) in islets. Concurrent maternal dietary folate supplementation prevented *Igf2* hypermethylation, restored *Igf2* expression, and counteracted the BPA-induced pancreatic impairments in offspring.
Why it matters
Demonstrates in a rodent model that maternal methyl-donor supplementation can mitigate developmental endocrine disruption and epigenetic programming changes caused by environmental BPA exposure.
Limits
Conducted entirely in rats, limiting direct applicability to human metabolic physiology. The abstract does not disclose sample sizes, exposure doses, exposure windows, or exact quantitative effect sizes.
Cited by
- supports Specific nutrients such as vitamin B9 (folic acid), omega-3 fatty acids, quercetin, and vitamin C offset epigenomic alterations caused by environmental chemicals.