Biomedical and environmental sciences : BES · 2026
Associations between Heavy Metals and Metalloids and Hepatic Fibrosis Risk in Chinese Adults: A Potential Modifying Effect of Thyroid Hormones.
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Yu Lu, Li Zheng, Sun Pei Jie, Yan Shu Yang, Shi Wan Ying, Hao Wen Qi, Li Wan Ling, Yu Ming Kun, Yang De Jin, Qu Ying Li, Ji Sai Sai, Zhang Wen Li, Zhao Feng, Li Ya Wei, Song Hao Can, Cai Jia Yi, Zhu Ying, Tang Song, Tan Feng, Lyu Yue Bin, Shi Xiao Ming
Аннотация
OBJECTIVE: To investigate associations between heavy metals and metalloids (HMMs) exposure and hepatic fibrosis risk, and to explore the modifying role of thyroid hormones.
METHODS: Using nationally representative data from 9,543 adults in the China National Human Biomonitoring (CNHBM) program, hepatic fibrosis risk was assessed with the Fibrosis-4 index (FIB-4). Weighted logistic and linear regression models were applied to evaluate links between 13 HMMs and fibrosis outcomes. Dose-response relationships were modeled with restricted cubic splines, and subgroup analyses were used to explore potential effect modification.
RESULTS: Blood cobalt (Co) ( OR = 1.613, 95% CI: 1.126-2.310) and blood manganese (Mn) ( OR = 1.699, 95% CI: 1.238-2.331) showed nonlinear positive associations with hepatic fibrosis risk, while urinary tin (Sn) ( OR = 0.888, 95% CI: 0.797-0.990) was inversely associated. Low triiodothyronine (T3) levels increased Co-induced fibrosis risk and may enhance the protective effect of Sn, while high T3 levels exacerbated Mn-related risk. Stratified analysis by thyroxine (T4) levels showed directionally consistent associations with the main findings.
CONCLUSION: Blood Co and Mn nonlinearly increased hepatic fibrosis risk, urinary Sn reduced it. T3 levels modulated these metal-specific risks, highlighting thyroid hormones as potential modifiers in HMMs-induced hepatotoxicity.
METHODS: Using nationally representative data from 9,543 adults in the China National Human Biomonitoring (CNHBM) program, hepatic fibrosis risk was assessed with the Fibrosis-4 index (FIB-4). Weighted logistic and linear regression models were applied to evaluate links between 13 HMMs and fibrosis outcomes. Dose-response relationships were modeled with restricted cubic splines, and subgroup analyses were used to explore potential effect modification.
RESULTS: Blood cobalt (Co) ( OR = 1.613, 95% CI: 1.126-2.310) and blood manganese (Mn) ( OR = 1.699, 95% CI: 1.238-2.331) showed nonlinear positive associations with hepatic fibrosis risk, while urinary tin (Sn) ( OR = 0.888, 95% CI: 0.797-0.990) was inversely associated. Low triiodothyronine (T3) levels increased Co-induced fibrosis risk and may enhance the protective effect of Sn, while high T3 levels exacerbated Mn-related risk. Stratified analysis by thyroxine (T4) levels showed directionally consistent associations with the main findings.
CONCLUSION: Blood Co and Mn nonlinearly increased hepatic fibrosis risk, urinary Sn reduced it. T3 levels modulated these metal-specific risks, highlighting thyroid hormones as potential modifiers in HMMs-induced hepatotoxicity.