Arsenic Exposure, Blood DNA Methylation, and Cardiovascular Disease

Arce Domingo-Relloso, Kiran Makhani, Angela L. Riffo-Campos, Maria Tellez-Plaza, Kathleen Oros Klein, Pooja Subedi, Jinying Zhao, Katherine A. Moon, Anne K. Bozack, Karin Haack, Walter Goessler, Jason G. Umans, Lyle G. Best, Ying Zhang, Miguel Herreros-Martinez, Ronald A. Glabonjat, Kathrin Schilling, Marta Galvez-Fernandez, Jack W. Kent, Tiffany R. SanchezKent D. Taylor, W. Craig Johnson, Peter Durda, Russell P. Tracy, Jerome I. Rotter, Stephen S. Rich, David Van Den Berg, Silva Kasela, Tuuli Lappalainen, Ramachandran S. Vasan, Roby Joehanes, Barbara V. Howard, Daniel Levy, Kurt Lohman, Yongmei Liu, M. Daniele Fallin, Shelley A. Cole, Koren K. Mann, Ana Navas-Acien

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Background: Epigenetic dysregulation has been proposed as a key mechanism for arsenic-related cardiovascular disease (CVD). We evaluated differentially methylated positions (DMPs) as potential mediators on the association between arsenic and CVD. Methods: Blood DNA methylation was measured in 2321 participants (mean age 56.2, 58.6% women) of the Strong Heart Study, a prospective cohort of American Indians. Urinary arsenic species were measured using high-performance liquid chromatography coupled to inductively coupled plasma mass spectrometry. We identified DMPs that are potential mediators between arsenic and CVD. In a cross-species analysis, we compared those DMPs with differential liver DNA methylation following early-life arsenic exposure in the apoE knockout (apoE-/-) mouse model of atherosclerosis. Results: A total of 20 and 13 DMPs were potential mediators for CVD incidence and mortality, respectively, several of them annotated to genes related to diabetes. Eleven of these DMPs were similarly associated with incident CVD in 3 diverse prospective cohorts (Framingham Heart Study, Women's Health Initiative, and Multi-Ethnic Study of Atherosclerosis). In the mouse model, differentially methylated regions in 20 of those genes and DMPs in 10 genes were associated with arsenic. Conclusions: Differential DNA methylation might be part of the biological link between arsenic and CVD. The gene functions suggest that diabetes might represent a relevant mechanism for arsenic-related cardiovascular risk in populations with a high burden of diabetes.

Original languageEnglish (US)
Pages (from-to)E51-E69
JournalCirculation research
Volume131
Issue number2
DOIs
StatePublished - Jul 8 2022
Externally publishedYes

Keywords

  • arsenic
  • cardiovascular diseases
  • DNA methylation

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

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