Association of Per- and Polyfluoroalkyl Substances (PFAS) with Periodontitis: the Mediating Role of Sex Hormones

Overview

Journal BMC Oral Health

Publisher Biomed Central

Specialty Dentistry

Date 2024 Feb 15

PMID 38360594

Authors

Yuxuan Wu

Yu Qiu

Yuying Wu

Husheng Li

Han Yang

Qingrong Deng

Baochang He

Fuhua Yan

Yanfen Li

Fa Chen

Affiliations

Soon will be listed here.

Abstract

Objectives: To investigate the association between serum per- and polyfluoroalkyl substances (PFAS) and periodontitis, and further explore the possible mediating role of sex hormones in this association.

Methods: We extracted data from National Health and Nutrition Examination Survey (NHANES) 2009-2014. Univariable and multivariable logistic regression models were performed to investigate the association between serum levels of seven PFASs and periodontitis. Bayesian kernel machine regression (BKMR) was conducted to assess the joint effect of PFASs in mixtures. Mediation analyses were used to explore the potential mediating role of sex hormones.

Results: Participants with periodontitis had higher concentrations of serum perfluorooctane sulfonate (PFOS) and perfluorononanoic acid (PFNA) than those without periodontitis (both P < 0.05). In fully adjusted models, high serum concentrations of PFOS and PFNA were positively associated with periodontitis (tertile 3 vs. tertile 1: prevalence ratio (PR) = 1.19 for PFOS, 95% CI: 1.01-1.39; PR = 1.17 for PFNA, 95% CI: 1.02-1.34). The results from the BKMR models consistently showed a positive association between PFAS mixtures and periodontitis. Of note, testosterone and the ratio of testosterone to estradiol significantly mediated the relationship between high level of PFOS and periodontitis, accounting for 16.5% and 31.7% of the total effect, respectively. Sensitivity analyses yielded similar results when using periodontal clinical indices (mean loss of attachment, mean periodontal probing depth, and the number of teeth) as dependent variables.

Conclusions: These findings provide evidence to support a positive association between certain PFASs and periodontitis, which might be partially mediated by sex hormones.

Citing Articles

Association between brominated flame retardants (BFRs) and periodontitis: Results from a large population-based study.

Pan Y, Chen Q, Yu Y, Yang H, Liu Z, Xie B BMC Oral Health. 2024; 24(1):1025.

PMID: 39215278 PMC: 11365261. DOI: 10.1186/s12903-024-04796-4.

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