» Articles » PMID: 37304094

Global DNA Methylation and the Association Between Metal Exposure and Chronic Kidney Disease

Overview
Specialty Public Health
Date 2023 Jun 12
PMID 37304094
Authors
Affiliations
Soon will be listed here.
Abstract

Introduction: Prior studies indicate that exposure to metals may alter DNA methylation. Evidence also shows that global DNA methylation is associated with chronic kidney disease (CKD). This study aimed to examine the association between CKD and 5-methyl-2-deoxycytidine (5mdC, %), a marker of global DNA methylation, and to evaluate the interaction between metal exposures and 5mdC (%) on CKD. We also explored the mediation effect of 5mdC (%) on the association between metal exposures and renal function (i.e., estimated glomerular filtration rate, eGFR).

Methods: A total of 218 CKD patients and 422 controls were recruited in this case-control study. 5mdC (%), concentrations of blood lead and cadmium, plasma selenium, and total urinary arsenic were measured. CKD cases were clinically defined among patients with eGFR <60 mL/min/1.73 m for at least 3 months and without hemodialysis. Odds ratio (OR) and 95% confidence interval (CI) were estimated by logistic regression models to examine the association between metal exposures, 5mdC (%), and CKD, adjusted for confounders. Multivariable linear regression models were used to examine associations between metal exposures, 5mdC (%), and eGFR.

Results And Discussion: CKD cases compared to controls had 6.06-fold (95% CI: 3.11-11.81) higher odds of having high blood cadmium and high 5mdC (%) levels. A positive interaction on an additive scale was identified between blood cadmium and 5mdC (%) on CKD. Cases compared to controls had 4.73-fold (95% CI: 2.65-8.45) higher odds of having low plasma selenium and high 5mdC (%) levels; and a significant multiplicative interaction between plasma selenium and 5mdC (%) on CKD was observed. In addition, we found that blood lead and cadmium concentrations were positively associated, while plasma selenium concentrations were inversely associated, with 5mdC (%). The associations of blood lead and plasma selenium with eGFR were partially mediated by 5mdC (%). Our results suggest that 5mdC (%) may interact with plasma selenium and blood cadmium to influence the risk of CKD. The 5mdC (%) also potentially mediates the associations between exposure to metals and renal function.

Citing Articles

Whole Blood Metabolomic Profiling of Mice with Tacrolimus-Induced Chronic Nephrotoxicity: NAD Depletion with Salvage Pathway Impairment.

Nishida S, Ishima T, Iwami D, Nagai R, Aizawa K Antioxidants (Basel). 2025; 14(1).

PMID: 39857396 PMC: 11760425. DOI: 10.3390/antiox14010062.


DNA Methylation as a Molecular Mechanism of Carcinogenesis in World Trade Center Dust Exposure: Insights from a Structured Literature Review.

Tuminello S, Durmus N, Snuderl M, Chen Y, Shao Y, Reibman J Biomolecules. 2024; 14(10).

PMID: 39456235 PMC: 11506790. DOI: 10.3390/biom14101302.

References
1.
Wing M, Devaney J, Joffe M, Xie D, Feldman H, Dominic E . DNA methylation profile associated with rapid decline in kidney function: findings from the CRIC study. Nephrol Dial Transplant. 2014; 29(4):864-72. PMC: 3967834. DOI: 10.1093/ndt/gft537. View

2.
Stenvinkel P, Karimi M, Johansson S, Axelsson J, Suliman M, Lindholm B . Impact of inflammation on epigenetic DNA methylation - a novel risk factor for cardiovascular disease?. J Intern Med. 2007; 261(5):488-99. DOI: 10.1111/j.1365-2796.2007.01777.x. View

3.
Tang L, Yang L, Chen W, Li C, Zeng Y, Yang H . Sex-specific association between coffee consumption and incident chronic kidney disease: a population-based analysis of 359,906 participants from the UK Biobank. Chin Med J (Engl). 2022; 135(12):1414-1424. PMC: 9481436. DOI: 10.1097/CM9.0000000000002234. View

4.
Reddy M, Natarajan R . Epigenetics in diabetic kidney disease. J Am Soc Nephrol. 2011; 22(12):2182-5. PMC: 3250203. DOI: 10.1681/ASN.2011060629. View

5.
Hossain M, Vahter M, Concha G, Broberg K . Low-level environmental cadmium exposure is associated with DNA hypomethylation in Argentinean women. Environ Health Perspect. 2012; 120(6):879-84. PMC: 3385444. DOI: 10.1289/ehp.1104600. View