PMID- 30782532 OWN - NLM STAT- MEDLINE DCOM- 20200102 LR - 20200102 IS - 1096-0953 (Electronic) IS - 0013-9351 (Linking) VI - 172 DP - 2019 May TI - Developmental exposure to a very low dose of bisphenol A induces persistent islet insulin hypersecretion in Fischer 344 rat offspring. PG - 127-136 LID - S0013-9351(19)30084-2 [pii] LID - 10.1016/j.envres.2019.02.009 [doi] AB - BACKGROUND: In children with obesity, accentuated insulin secretion has been coupled with development of type 2 diabetes mellitus (T2DM). Bisphenol A (BPA) is a chemical with endocrine- and metabolism-disrupting properties which can be measured in a majority of the population. Exposure to BPA has been associated with the development of metabolic diseases including T2DM. OBJECTIVE: The aim of this study was to investigate if exposure early in life to an environmentally relevant low dose of BPA causes insulin hypersecretion in rat offspring. METHODS: Pregnant Fischer 344 rats were exposed to 0.5 (BPA0.5) or 50 (BPA50) microg BPA/kg BW/day via drinking water from gestational day 3.5 until postnatal day 22. Pancreata from dams and 5- and 52-week-old offspring were procured and islets were isolated by collagenase digestion. Glucose-stimulated insulin secretion and insulin content in the islets were determined by ELISA. RESULTS: Basal (5.5 mM glucose) islet insulin secretion was not affected by BPA exposure. However, stimulated (11 mM glucose) insulin secretion was enhanced by about 50% in islets isolated from BPA0.5-exposed 5- and 52-week-old female and male offspring and by 80% in islets from dams, compared with control. In contrast, the higher dose, BPA50, reduced stimulated insulin secretion by 40% in both 5- and 52-week-old female and male offspring and dams, compared with control. CONCLUSION: A BPA intake 8 times lower than the European Food Safety Authority's (EFSA's) current tolerable daily intake (TDI) of 4 microg/kg BW/day of BPA delivered via drinking water during gestation and early development causes islet insulin hypersecretion in rat offspring up to one year after exposure. The effects of BPA exposure on the endocrine pancreas may promote the development of metabolic disease including T2DM. CI - Copyright (c) 2019 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Manukyan, Levon AU - Manukyan L AD - Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden. Electronic address: levon.manukyan@angstrom.uu.se. FAU - Dunder, Linda AU - Dunder L AD - Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden. Electronic address: linda.dunder@medsci.uu.se. FAU - Lind, P Monica AU - Lind PM AD - Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden. Electronic address: monica.lind@medsci.uu.se. FAU - Bergsten, Peter AU - Bergsten P AD - Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden; Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden. Electronic address: peter.bergsten@mcb.uu.se. FAU - Lejonklou, Margareta H AU - Lejonklou MH AD - Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden. Electronic address: margareta.halin@medsci.uu.se. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190208 PL - Netherlands TA - Environ Res JT - Environmental research JID - 0147621 RN - 0 (Benzhydryl Compounds) RN - 0 (Environmental Pollutants) RN - 0 (Insulin) RN - 0 (Phenols) RN - MLT3645I99 (bisphenol A) SB - IM MH - Animals MH - *Benzhydryl Compounds/toxicity MH - Embryo, Mammalian/drug effects MH - *Environmental Pollutants/toxicity MH - Female MH - Humans MH - *Insulin/metabolism MH - Islets of Langerhans MH - Male MH - *Phenols/toxicity MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - Rats MH - Rats, Inbred F344 OTO - NOTNLM OT - Bisphenol A OT - Endocrine disruptor OT - Fischer 344 rats OT - Insulin hypersecretion OT - Islets of Langerhans EDAT- 2019/02/21 06:00 MHDA- 2020/01/03 06:00 CRDT- 2019/02/21 06:00 PHST- 2018/11/01 00:00 [received] PHST- 2019/01/22 00:00 [revised] PHST- 2019/02/07 00:00 [accepted] PHST- 2019/02/21 06:00 [pubmed] PHST- 2020/01/03 06:00 [medline] PHST- 2019/02/21 06:00 [entrez] AID - S0013-9351(19)30084-2 [pii] AID - 10.1016/j.envres.2019.02.009 [doi] PST - ppublish SO - Environ Res. 2019 May;172:127-136. doi: 10.1016/j.envres.2019.02.009. Epub 2019 Feb 8.