Arsenic metabolism is influenced by polymorphisms in genes involved in one-carbon metabolism and reduction reactions.
Engström, Karin LU ; Nermell, Barbro ; Concha, Gabriela ; Strömberg, Ulf LU ; Vahter, Marie and Broberg Palmgren, Karin LU
(2009)
In Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis
667.
p.4-14
- Abstract
- OBJECTIVES: The susceptibility to arsenic (As)-induced diseases differs greatly between individuals, probably to a large extent due to genetic differences in arsenic metabolism. The aim for this study was to identify genetic variants affecting arsenic metabolism. METHODS: We evaluated the association between urinary metabolite pattern and polymorphisms in three gene-groups related to arsenic metabolism: (1) methyltransferases, (2) other genes involved in one-carbon metabolism and (3) genes involved in reduction reactions. Forty-nine polymorphisms were successfully genotyped in indigenous women (N=104) from northern Argentina, exposed to approximately 200mug/L of arsenic in drinking water, with a unique metabolism with low percent... (More)
- OBJECTIVES: The susceptibility to arsenic (As)-induced diseases differs greatly between individuals, probably to a large extent due to genetic differences in arsenic metabolism. The aim for this study was to identify genetic variants affecting arsenic metabolism. METHODS: We evaluated the association between urinary metabolite pattern and polymorphisms in three gene-groups related to arsenic metabolism: (1) methyltransferases, (2) other genes involved in one-carbon metabolism and (3) genes involved in reduction reactions. Forty-nine polymorphisms were successfully genotyped in indigenous women (N=104) from northern Argentina, exposed to approximately 200mug/L of arsenic in drinking water, with a unique metabolism with low percent monomethylated arsenic (%MMA) and high percent dimethylated As (%DMA). RESULTS: Genetic factors affecting arsenic metabolite pattern included two polymorphisms in arsenic (+III) methyltransferase (AS3MT) (rs3740400, rs7085104), where carriers had lower %MMA and higher %DMA. These single nucleotide polymorphisms (SNPs) were in strong linkage disequilibrium (LD) with three intronic AS3MT SNPs, previously reported to be associated with arsenic metabolism, indicating the existence of a strongly methylating, population-specific haplotype. The CYP17A1 rs743572, 27kilobasepairs (kbs) upstream of AS3MT, was in strong LD with the AS3MT SNPs and thus had similar effects on the metabolite profile. Smaller effects were also seen for one-carbon metabolism genes choline dehydrogenase (CHDH) (rs9001, rs7626693) and 5-methyltetrahydrofolate-homocysteine methyltransferase reductase (MTRR) (rs1801394) and genes involved in reduction reactions, glutaredoxin (GLRX) (rs3822751) and peroxiredoxin 2 (PRDX2) (rs10427027, rs12151144). Genotypes associated with more beneficial arsenic metabolite profile (low %MMA and/or high %DMA in urine) were more common in this population, which has been exposed to arsenic in drinking water for thousands of years. CONCLUSIONS: Polymorphisms in AS3MT and in genes involved in one-carbon metabolism and reduction reactions affects arsenic metabolism. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1223457
- author
- Engström, Karin
LU
; Nermell, Barbro
; Concha, Gabriela
; Strömberg, Ulf
LU
; Vahter, Marie
and Broberg Palmgren, Karin
LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis
- volume
- 667
- pages
- 4 - 14
- publisher
- Elsevier
- external identifiers
-
- wos:000268366200002
- pmid:18682255
- scopus:67649206115
- pmid:18682255
- ISSN
- 1879-2871
- DOI
- 10.1016/j.mrfmmm.2008.07.003
- language
- English
- LU publication?
- yes
- id
- 1209ae0c-7413-40de-9fe5-3c4ac49c8bfa (old id 1223457)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/18682255?dopt=Abstract
- date added to LUP
- 2016-04-04 09:15:04
- date last changed
- 2025-04-04 13:53:53
@article{1209ae0c-7413-40de-9fe5-3c4ac49c8bfa,
abstract = {{OBJECTIVES: The susceptibility to arsenic (As)-induced diseases differs greatly between individuals, probably to a large extent due to genetic differences in arsenic metabolism. The aim for this study was to identify genetic variants affecting arsenic metabolism. METHODS: We evaluated the association between urinary metabolite pattern and polymorphisms in three gene-groups related to arsenic metabolism: (1) methyltransferases, (2) other genes involved in one-carbon metabolism and (3) genes involved in reduction reactions. Forty-nine polymorphisms were successfully genotyped in indigenous women (N=104) from northern Argentina, exposed to approximately 200mug/L of arsenic in drinking water, with a unique metabolism with low percent monomethylated arsenic (%MMA) and high percent dimethylated As (%DMA). RESULTS: Genetic factors affecting arsenic metabolite pattern included two polymorphisms in arsenic (+III) methyltransferase (AS3MT) (rs3740400, rs7085104), where carriers had lower %MMA and higher %DMA. These single nucleotide polymorphisms (SNPs) were in strong linkage disequilibrium (LD) with three intronic AS3MT SNPs, previously reported to be associated with arsenic metabolism, indicating the existence of a strongly methylating, population-specific haplotype. The CYP17A1 rs743572, 27kilobasepairs (kbs) upstream of AS3MT, was in strong LD with the AS3MT SNPs and thus had similar effects on the metabolite profile. Smaller effects were also seen for one-carbon metabolism genes choline dehydrogenase (CHDH) (rs9001, rs7626693) and 5-methyltetrahydrofolate-homocysteine methyltransferase reductase (MTRR) (rs1801394) and genes involved in reduction reactions, glutaredoxin (GLRX) (rs3822751) and peroxiredoxin 2 (PRDX2) (rs10427027, rs12151144). Genotypes associated with more beneficial arsenic metabolite profile (low %MMA and/or high %DMA in urine) were more common in this population, which has been exposed to arsenic in drinking water for thousands of years. CONCLUSIONS: Polymorphisms in AS3MT and in genes involved in one-carbon metabolism and reduction reactions affects arsenic metabolism.}},
author = {{Engström, Karin and Nermell, Barbro and Concha, Gabriela and Strömberg, Ulf and Vahter, Marie and Broberg Palmgren, Karin}},
issn = {{1879-2871}},
language = {{eng}},
pages = {{4--14}},
publisher = {{Elsevier}},
series = {{Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis}},
title = {{Arsenic metabolism is influenced by polymorphisms in genes involved in one-carbon metabolism and reduction reactions.}},
url = {{https://lup.lub.lu.se/search/files/5272991/1259878.pdf}},
doi = {{10.1016/j.mrfmmm.2008.07.003}},
volume = {{667}},
year = {{2009}},
}