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Development of a Cumulative Exposure Index (CEI) for Manganese and Comparison with Bone Manganese and Other Biomarkers of Manganese Exposure

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Publisher MDPI
Date 2018 Jun 29
PMID 29949870
Citations 9
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Abstract

Manganese (Mn) exposure can result in parkinsonism. However, understanding of manganese neurotoxicity has been limited by the lack of a cumulative Mn biomarker. Therefore, the current goal was to develop Mn cumulative exposure indices (MnCEI), an established method to estimate cumulative exposure, and determine associations of MnCEI with blood Mn (BMn), fingernail Mn (FMn), and bone Mn (BnMn). We completed a cross-sectional study of 60 male Chinese workers. Self-reported occupational history was used to create two MnCEIs reflecting the previous 16 years (MnCEI) and total work history (MnCEI). An in vivo neutron activation analysis system was used to quantify BnMn. BMn and FMn were measured using ICP-MS. Mean (standard deviation) MnCEI and MnCEI were 37.5 (22.0) and 25.0 (11.3), respectively. Median (interquartile range) BMn, FMn, and BnMn were 14.1 (4.0) &mu;g/L, 13.5 (58.5) &mu;g/g, and 2.6 (7.2) &mu;g/g dry bone, respectively. MnCEI was significantly correlated with FMn (Spearman&rsquo;s = 0.44; = 0.02), BnMn ( = 0.44; < 0.01), and MnCEI ( = 0.44; < 0.01). In adjusted regression models, MnCEI was significantly associated with BnMn (&beta; = 0.03; 95% confidence interval = 0.001, 0.05); no other biomarkers were associated with MnCEI. This suggests BnMn may be a useful biomarker of the previous 16 years of Mn exposure, but larger studies are recommended.

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References
1.
Succop P, Clark S, Chen M, Galke W . Imputation of data values that are less than a detection limit. J Occup Environ Hyg. 2004; 1(7):436-41. DOI: 10.1080/15459620490462797. View

2.
Park S, Mukherjee B, Xia X, Sparrow D, Weisskopf M, Nie H . Bone lead level prediction models and their application to examine the relationship of lead exposure and hypertension in the Third National Health and Nutrition Examination Survey. J Occup Environ Med. 2009; 51(12):1422-36. PMC: 2939477. DOI: 10.1097/JOM.0b013e3181bf6c8d. View

3.
Bouchard M, Mergler D, Baldwin M, Panisset M . Manganese cumulative exposure and symptoms: a follow-up study of alloy workers. Neurotoxicology. 2008; 29(4):577-83. DOI: 10.1016/j.neuro.2008.04.013. View

4.
Ramlow J, Spadacene N, Hoag S, Stafford B, Cartmill J, Lerner P . Mortality in a cohort of pentachlorophenol manufacturing workers, 1940-1989. Am J Ind Med. 1996; 30(2):180-94. DOI: 10.1002/(SICI)1097-0274(199608)30:2<180::AID-AJIM9>3.0.CO;2-4. View

5.
Laohaudomchok W, Lin X, Herrick R, Fang S, Cavallari J, Christiani D . Toenail, blood, and urine as biomarkers of manganese exposure. J Occup Environ Med. 2011; 53(5):506-10. PMC: 3092003. DOI: 10.1097/JOM.0b013e31821854da. View