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The risk of arsenic induced skin lesions in Bangladeshi men and women is affected by arsenic metabolism and the age at first exposure
Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
ICDDR, Dhaka, Bangladesh.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. (Internationell barnhälsa och Nutrition/Persson)
Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
2008 (English)In: Toxicology and Applied Pharmacology, ISSN 0041-008X, E-ISSN 1096-0333, Vol. 230, no 1, 9-16 p.Article in journal (Refereed) Published
Abstract [en]

It is known that a high fraction of methylarsonate (MA) in urine is a risk modifying factor for several arsenic induced health effects, including skin lesions, and that men are more susceptible for developing skin lesions than women. Thus, we aimed at elucidating the interaction between gender and arsenic metabolism for the risk of developing skin lesions. This study is part of a population-based case-referent study concerning the risk for skin lesions in relation to arsenic exposure via drinking water carried out in Matlab, a rural area 53 km south-east of Dhaka, Bangladesh. We randomly selected 526 from 1579 referents and all 504 cases for analysis of arsenic metabolites in urine using HPLC coupled to inductively coupled plasma mass spectrometry (HPLC-HG-ICPMS). The present study confirm previous studies, with the risk for skin lesions being almost three times higher in the highest tertile of %MA (adjusted OR 2.8, 95% CI: 1.9-4.2, p < 0.001) compared to the lowest tertile. The present study is the first to show that the well documented higher risk for men to develop arsenic-related skin lesions compared to women is mainly explained by the less efficient methylation of arsenic, as defined by a higher fraction of MA and lower fraction of DMA in the urine, among men. Our previously documented lower risk for skin lesions in individuals exposed since infancy, or before, was found to be independent of the observed arsenic methylation efficiency. Thus, it can be speculated that this is due to a programming effect of arsenic in utero.

Place, publisher, year, edition, pages
2008. Vol. 230, no 1, 9-16 p.
Keyword [en]
Inorganic arsenic, Methylation, Gender differences, Age differences, Urine
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-86660DOI: 10.1016/j.taap.2008.02.001ISI: 000257098300002PubMedID: 18336856OAI: oai:DiVA.org:uu-86660DiVA: diva2:126829
Available from: 2008-11-27 Created: 2008-11-24 Last updated: 2017-12-14Bibliographically approved

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