Cited by 114Effects and risks of endocrine disrupting chemicalsEpigenetics and DNA MethylationEstrogen and related hormone effects

Lifelong Exposure to Bisphenol A Alters Cardiac Structure/Function, Protein Expression, and DNA Methylation in Adult Mice

Patel, Bhavini B., Raad, Mohamad, Sebag, Igal A., Chalifour, Lorraine E.·2013·Toxicological Sciences

Abstract

Bisphenol A (BPA) is an estrogenizing endocrine disruptor compound of concern. Our objective was to test whether lifelong BPA would impact cardiac structure/function, calcium homeostasis protein expression, and the DNA methylation of cardiac genes. We delivered 0.5 and 5.0 µg/kg/day BPA lifelong from gestation day 11 or 200 µg/kg/day from gestation day 11 to postnatal day 21 via the drinking water to C57bl/6n mice. BPA 5.0 males and females had increased body weight, body mass index, body surface area, and adiposity. Echocardiography identified concentric remodeling in all BPA-treated males. Systolic and diastolic cardiac functions were essentially similar, but lifelong BPA enhanced male and reduced female sex-specific differences in velocity of circumferential shortening and ascending aorta velocity time integral. Diastolic blood pressure was increased in all BPA females. The calcium homeostasis proteins sarcoendoplasmic reticulum ATPase 2a (SERCA2a), sodium calcium exchanger-1, phospholamban (PLB), phospho-PLB, and calsequestrin 2 are important for contraction and relaxation. Changes in their expression suggest increased calcium mobility in males and reduced calcium mobility in females supporting the cardiac function changes. DNA methyltransferase 3a expression was increased in all BPA males and BPA 0.5 females and reduced in BPA 200 females. Global DNA methylation was increased in BPA 0.5 males and reduced in BPA 0.5 females. BPA induced sex-specific altered DNA methylation in specific CpG pairs in the calsequestrin 2 CpG island. These results suggest that continual exposure to BPA impacts cardiac structure/function, protein expression, and epigenetic DNA methylation marks in males and females.

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Crossref · 10.1093/toxsci/kft026

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Authors
Patel, B. B., Raad, M., Sebag, I. A., & Chalifour, L. E.
Affiliations
Jewish General Hospital (CA)
Venue
Toxicological Sciences
Published
2013-02-15
Volume
133
Issue
1
Pages
174-185
ISSN
  • 1096-0929 (ISSN-L)
  • 1096-6080
OpenAlex
W2163044427
Cited by
114
References
45
Citations by year
2026: 5 · 2025: 6 · 2024: 9 · 2023: 7 · 2022: 8 · 2021: 6 · 2020: 16 · 2019: 7 · 2018: 7 · 2017: 12 · 2016: 6 · 2015: 12 · 2014: 7 · 2013: 5 · 2012: 1
FWCI
7.34
Type
journal article
Language
en
Open access
closed
Locations
  • Toxicological Sciences (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
Canadian Institutes of Health Research (MOP -89788)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Effects and risks of endocrine disrupting chemicals
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
Keywords
bisphenol A, endocrine disruptors, cardiac structure and function, calcium homeostasis, DNA methylation, sex differences, cardiac remodeling, SERCA2a, phospholamban, CASQ2, DNMT3A, global DNA methylation, CpG islands, diastolic blood pressure, adiposity, epigenetics
MeSH terms
DNA Methyltransferase 3A, Bisphenol A Compounds, Animals, Benzhydryl Compounds, Blood Pressure, Body Weight, Calcium-Binding Proteins, Carrier Proteins, Dose-Response Relationship, Drug, Echocardiography, Female, Gestational Age, Heart, Heart Function Tests, Male, Organ Size, Phenols, Pregnancy, Prenatal Exposure Delayed Effects, Sex Factors, Time Factors, DNA Methylation, Sodium-Calcium Exchanger, Mice, Endocrine Disruptors, Sarcoplasmic Reticulum Calcium-Transporting ATPases

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