Association between urinary mixture metal levels and olfactory function in coal miners

BackgroundExposure to occupational metallic mixtures has a potential impact on olfactory function. However, research evidence is limited on the potential impact of exposure to metallic mixtures and olfactory dysfunction. Furthermore, the coal dust generated contains multiple various metals during co...

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Main Authors: Yang Li, Yuxuan Jiao, Rong Hu, Guilin Hu, Ge Shi, Kaidong Wang, Ai Qi, Yujing Li, Yonghang Li, Zhuoheng Shen, Jiafei Yang, Zhiyun Ha, Yaowen Yang, Jiangping Li, Min Huang
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Language:English
Published: Frontiers Media S.A. 2024-09-01
Series:Frontiers in Public Health
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Online Access:https://www.frontiersin.org/articles/10.3389/fpubh.2024.1447290/full
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author Yang Li
Yang Li
Yuxuan Jiao
Yuxuan Jiao
Rong Hu
Rong Hu
Guilin Hu
Guilin Hu
Ge Shi
Ge Shi
Kaidong Wang
Kaidong Wang
Ai Qi
Ai Qi
Yujing Li
Yujing Li
Yonghang Li
Yonghang Li
Zhuoheng Shen
Zhuoheng Shen
Jiafei Yang
Jiafei Yang
Zhiyun Ha
Zhiyun Ha
Yaowen Yang
Yaowen Yang
Jiangping Li
Jiangping Li
Jiangping Li
Min Huang
Min Huang
author_facet Yang Li
Yang Li
Yuxuan Jiao
Yuxuan Jiao
Rong Hu
Rong Hu
Guilin Hu
Guilin Hu
Ge Shi
Ge Shi
Kaidong Wang
Kaidong Wang
Ai Qi
Ai Qi
Yujing Li
Yujing Li
Yonghang Li
Yonghang Li
Zhuoheng Shen
Zhuoheng Shen
Jiafei Yang
Jiafei Yang
Zhiyun Ha
Zhiyun Ha
Yaowen Yang
Yaowen Yang
Jiangping Li
Jiangping Li
Jiangping Li
Min Huang
Min Huang
author_sort Yang Li
collection DOAJ
description BackgroundExposure to occupational metallic mixtures has a potential impact on olfactory function. However, research evidence is limited on the potential impact of exposure to metallic mixtures and olfactory dysfunction. Furthermore, the coal dust generated contains multiple various metals during coal mining, and no study yet has focus on the olfactory dysfunction of coal miners.ObjectivesIn this study, we evaluate the association between urinary metallic mixtures and olfactory function in coal miners, while also exploring the potential applicability of plasma olfactory marker protein (OMP) as a biomarker for assessing olfaction.MethodsFrom July to October 2023, coal workers from seven different coal mining enterprises were recruited for the survey when they come for the employee health checkup. Ultimately, 376 participants were met the inclusion criteria and, respectively, determined with the concentrations of urine (16 metals) and plasma (OMP). Meanwhile, applying UPSIT to access their olfactory function. Binary logistic regression and restricted cubic spline (RCS) model were used to estimate the association of individual metals with olfactory function. Bayesian kernel machine regression (BKMR) and Quantile g-computation (QG-C) regression were employed to assess the overall association between metal mixtures and olfactory function and identify the major contributing elements.ResultsIn a single-metal model, two metals in urine were found to be significantly associated with olfactory function. RCS analysis further revealed that the association between Iron (Fe) and olfactory function was linear, while Lead (Pb) exhibited a non-linear. The BKMR model demonstrated a significant positive association between metal mixture concentration and olfactory function. Combined QG-C regression analysis suggested that metals Cr, Fe, Se, Sb, and Pb could impact the performance of the olfactory test (UPSIT), with Pb being identified as the most influential contributor. The correlation between plasma OMP protein levels and urinary metal concentrations was weak.ConclusionMultiple metals are associated with olfactory function in the coal miners. A significant positive association was observed between metal mixture concentrations and olfactory function, with Pb being the most important contributor. In this study, plasma OMP has not been demonstrated to serve as a biomarker for olfactory function.
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spelling doaj-art-2ce0c9689f424e23b889db9867df890b2025-08-20T01:54:44ZengFrontiers Media S.A.Frontiers in Public Health2296-25652024-09-011210.3389/fpubh.2024.14472901447290Association between urinary mixture metal levels and olfactory function in coal minersYang Li0Yang Li1Yuxuan Jiao2Yuxuan Jiao3Rong Hu4Rong Hu5Guilin Hu6Guilin Hu7Ge Shi8Ge Shi9Kaidong Wang10Kaidong Wang11Ai Qi12Ai Qi13Yujing Li14Yujing Li15Yonghang Li16Yonghang Li17Zhuoheng Shen18Zhuoheng Shen19Jiafei Yang20Jiafei Yang21Zhiyun Ha22Zhiyun Ha23Yaowen Yang24Yaowen Yang25Jiangping Li26Jiangping Li27Jiangping Li28Min Huang29Min Huang30School of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaDepartment of Epidemiology and Health Statistics, School of Public Health, Ningxia Medical University, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaThe Fifth People’s Hospital of Ning Xia, Shizuishan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaThe Fifth People’s Hospital of Ning Xia, Shizuishan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaDepartment of Epidemiology and Health Statistics, School of Public Health, Ningxia Medical University, Yinchuan, ChinaSchool of Public Health, Ningxia Medical University, Yinchuan, ChinaKey Laboratory of Environmental Factors and Chronic Disease Control, Yinchuan, ChinaBackgroundExposure to occupational metallic mixtures has a potential impact on olfactory function. However, research evidence is limited on the potential impact of exposure to metallic mixtures and olfactory dysfunction. Furthermore, the coal dust generated contains multiple various metals during coal mining, and no study yet has focus on the olfactory dysfunction of coal miners.ObjectivesIn this study, we evaluate the association between urinary metallic mixtures and olfactory function in coal miners, while also exploring the potential applicability of plasma olfactory marker protein (OMP) as a biomarker for assessing olfaction.MethodsFrom July to October 2023, coal workers from seven different coal mining enterprises were recruited for the survey when they come for the employee health checkup. Ultimately, 376 participants were met the inclusion criteria and, respectively, determined with the concentrations of urine (16 metals) and plasma (OMP). Meanwhile, applying UPSIT to access their olfactory function. Binary logistic regression and restricted cubic spline (RCS) model were used to estimate the association of individual metals with olfactory function. Bayesian kernel machine regression (BKMR) and Quantile g-computation (QG-C) regression were employed to assess the overall association between metal mixtures and olfactory function and identify the major contributing elements.ResultsIn a single-metal model, two metals in urine were found to be significantly associated with olfactory function. RCS analysis further revealed that the association between Iron (Fe) and olfactory function was linear, while Lead (Pb) exhibited a non-linear. The BKMR model demonstrated a significant positive association between metal mixture concentration and olfactory function. Combined QG-C regression analysis suggested that metals Cr, Fe, Se, Sb, and Pb could impact the performance of the olfactory test (UPSIT), with Pb being identified as the most influential contributor. The correlation between plasma OMP protein levels and urinary metal concentrations was weak.ConclusionMultiple metals are associated with olfactory function in the coal miners. A significant positive association was observed between metal mixture concentrations and olfactory function, with Pb being the most important contributor. In this study, plasma OMP has not been demonstrated to serve as a biomarker for olfactory function.https://www.frontiersin.org/articles/10.3389/fpubh.2024.1447290/fullMetal mixtureolfaction disorderscoal minersoccupational exposureUPSITBayesian kernel machine regression
spellingShingle Yang Li
Yang Li
Yuxuan Jiao
Yuxuan Jiao
Rong Hu
Rong Hu
Guilin Hu
Guilin Hu
Ge Shi
Ge Shi
Kaidong Wang
Kaidong Wang
Ai Qi
Ai Qi
Yujing Li
Yujing Li
Yonghang Li
Yonghang Li
Zhuoheng Shen
Zhuoheng Shen
Jiafei Yang
Jiafei Yang
Zhiyun Ha
Zhiyun Ha
Yaowen Yang
Yaowen Yang
Jiangping Li
Jiangping Li
Jiangping Li
Min Huang
Min Huang
Association between urinary mixture metal levels and olfactory function in coal miners
Frontiers in Public Health
Metal mixture
olfaction disorders
coal miners
occupational exposure
UPSIT
Bayesian kernel machine regression
title Association between urinary mixture metal levels and olfactory function in coal miners
title_full Association between urinary mixture metal levels and olfactory function in coal miners
title_fullStr Association between urinary mixture metal levels and olfactory function in coal miners
title_full_unstemmed Association between urinary mixture metal levels and olfactory function in coal miners
title_short Association between urinary mixture metal levels and olfactory function in coal miners
title_sort association between urinary mixture metal levels and olfactory function in coal miners
topic Metal mixture
olfaction disorders
coal miners
occupational exposure
UPSIT
Bayesian kernel machine regression
url https://www.frontiersin.org/articles/10.3389/fpubh.2024.1447290/full
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