Metal mixtures exposure with risk of elevated serum neurofilament light chain concentrations in U.S. general adults, NHANES 2013–2014

Background: A relatively well-established link was observed between metal mixtures exposure and neurodegenerative diseases. However, the relationship between metal mixtures exposure and serum neurofilament light chain (sNfL) concentrations, a valuable non-invasive biomarker of neurodegenerative dise...

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Main Authors: Yan Wang, Keyi Zhang, Hao Li, Si Liu, Linyao Ying, Lu Xiang, Na Liang, Liangkai Chen, Lin Xiao, Gang Luo
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Ecotoxicology and Environmental Safety
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Online Access:http://www.sciencedirect.com/science/article/pii/S0147651324015495
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author Yan Wang
Keyi Zhang
Hao Li
Si Liu
Linyao Ying
Lu Xiang
Na Liang
Liangkai Chen
Lin Xiao
Gang Luo
author_facet Yan Wang
Keyi Zhang
Hao Li
Si Liu
Linyao Ying
Lu Xiang
Na Liang
Liangkai Chen
Lin Xiao
Gang Luo
author_sort Yan Wang
collection DOAJ
description Background: A relatively well-established link was observed between metal mixtures exposure and neurodegenerative diseases. However, the relationship between metal mixtures exposure and serum neurofilament light chain (sNfL) concentrations, a valuable non-invasive biomarker of neurodegenerative diseases, in general adult populations remains understudied and unclear. Objective: This study seeks to elucidate the potential impact of metal mixtures exposure on sNfL concentrations in a representative sample of U.S. general adults. Methods: Twelve urinary metal levels, including barium (Ba), cadmium (Cd), cobalt (Co), cesium (Cs), molybdenum (Mo), lead (Pb), antimony (Sb), tin (Sn), strontium (Sr), thallium (Tl), tungsten (W) and uranium (U), were analyzed in U.S. general adults recruited from the 2013–2014 National Health and Nutrition Examination Survey using inductively coupled plasma mass spectrometry (ICP-MS) after a simple dilution step. Urine samples are diluted with 2 % concentrated nitric acid (1:9). We employed a two-pronged approach, combining weighted quantile sum (WQS) and Bayesian kernel machine regression (BKMR) models, to examine the association between the multiple-metals effect and sNfL concentrations. Survey-weighted multivariate linear regression was used to explore the correlation between single-metal effect and sNfL concentrations. Results: With the increasing quartiles of log-transformed sNfL (log-sNfL) concentrations, the fourth quartile had a higher proportion of smokers and hypertensive individuals (P < 0.001). Cd (69.6 %) and Pb (8.9 %) were the primary drivers of the association between metal mixtures exposure and sNfL concentrations. Analysis of WQS and BKMR models showed a positive association between metal mixtures exposure and sNfL concentrations, especially in older, and male participants. Conclusion: In the U.S. general adult, a significant correlation between metal mixtures exposure and increased sNfL concentrations was observed, and urinary Cd levels play a pivotal role in this positive correlation. Notably, stronger risk associations were observed among elderly, males, smokers, and hypertensive individuals. The results could be significant for detecting and tracking the beginning of neurodegenerative diseases early, as well as helping to pinpoint individuals at high risk.
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spelling doaj-art-e7074958b2e749998f08b79a92c599172025-01-23T05:25:41ZengElsevierEcotoxicology and Environmental Safety0147-65132025-01-01289117473Metal mixtures exposure with risk of elevated serum neurofilament light chain concentrations in U.S. general adults, NHANES 2013–2014Yan Wang0Keyi Zhang1Hao Li2Si Liu3Linyao Ying4Lu Xiang5Na Liang6Liangkai Chen7Lin Xiao8Gang Luo9Xiangya School of Public Health, Central South University, Changsha 410078, ChinaXiangya School of Public Health, Central South University, Changsha 410078, ChinaXiangya School of Public Health, Central South University, Changsha 410078, ChinaXiangya School of Public Health, Central South University, Changsha 410078, ChinaXiangya School of Public Health, Central South University, Changsha 410078, ChinaXiangya School of Public Health, Central South University, Changsha 410078, ChinaXiangya School of Public Health, Central South University, Changsha 410078, ChinaDepartment of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, ChinaXiangya School of Public Health, Central South University, Changsha 410078, China; Corresponding authors.Xiangya School of Public Health, Central South University, Changsha 410078, China; Corresponding authors.Background: A relatively well-established link was observed between metal mixtures exposure and neurodegenerative diseases. However, the relationship between metal mixtures exposure and serum neurofilament light chain (sNfL) concentrations, a valuable non-invasive biomarker of neurodegenerative diseases, in general adult populations remains understudied and unclear. Objective: This study seeks to elucidate the potential impact of metal mixtures exposure on sNfL concentrations in a representative sample of U.S. general adults. Methods: Twelve urinary metal levels, including barium (Ba), cadmium (Cd), cobalt (Co), cesium (Cs), molybdenum (Mo), lead (Pb), antimony (Sb), tin (Sn), strontium (Sr), thallium (Tl), tungsten (W) and uranium (U), were analyzed in U.S. general adults recruited from the 2013–2014 National Health and Nutrition Examination Survey using inductively coupled plasma mass spectrometry (ICP-MS) after a simple dilution step. Urine samples are diluted with 2 % concentrated nitric acid (1:9). We employed a two-pronged approach, combining weighted quantile sum (WQS) and Bayesian kernel machine regression (BKMR) models, to examine the association between the multiple-metals effect and sNfL concentrations. Survey-weighted multivariate linear regression was used to explore the correlation between single-metal effect and sNfL concentrations. Results: With the increasing quartiles of log-transformed sNfL (log-sNfL) concentrations, the fourth quartile had a higher proportion of smokers and hypertensive individuals (P < 0.001). Cd (69.6 %) and Pb (8.9 %) were the primary drivers of the association between metal mixtures exposure and sNfL concentrations. Analysis of WQS and BKMR models showed a positive association between metal mixtures exposure and sNfL concentrations, especially in older, and male participants. Conclusion: In the U.S. general adult, a significant correlation between metal mixtures exposure and increased sNfL concentrations was observed, and urinary Cd levels play a pivotal role in this positive correlation. Notably, stronger risk associations were observed among elderly, males, smokers, and hypertensive individuals. The results could be significant for detecting and tracking the beginning of neurodegenerative diseases early, as well as helping to pinpoint individuals at high risk.http://www.sciencedirect.com/science/article/pii/S0147651324015495Serum neurofilament light chain concentrationsMetal mixtures exposureMultiple-metals effectNeurodegenerative diseasesNHANES
spellingShingle Yan Wang
Keyi Zhang
Hao Li
Si Liu
Linyao Ying
Lu Xiang
Na Liang
Liangkai Chen
Lin Xiao
Gang Luo
Metal mixtures exposure with risk of elevated serum neurofilament light chain concentrations in U.S. general adults, NHANES 2013–2014
Ecotoxicology and Environmental Safety
Serum neurofilament light chain concentrations
Metal mixtures exposure
Multiple-metals effect
Neurodegenerative diseases
NHANES
title Metal mixtures exposure with risk of elevated serum neurofilament light chain concentrations in U.S. general adults, NHANES 2013–2014
title_full Metal mixtures exposure with risk of elevated serum neurofilament light chain concentrations in U.S. general adults, NHANES 2013–2014
title_fullStr Metal mixtures exposure with risk of elevated serum neurofilament light chain concentrations in U.S. general adults, NHANES 2013–2014
title_full_unstemmed Metal mixtures exposure with risk of elevated serum neurofilament light chain concentrations in U.S. general adults, NHANES 2013–2014
title_short Metal mixtures exposure with risk of elevated serum neurofilament light chain concentrations in U.S. general adults, NHANES 2013–2014
title_sort metal mixtures exposure with risk of elevated serum neurofilament light chain concentrations in u s general adults nhanes 2013 2014
topic Serum neurofilament light chain concentrations
Metal mixtures exposure
Multiple-metals effect
Neurodegenerative diseases
NHANES
url http://www.sciencedirect.com/science/article/pii/S0147651324015495
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