Article ; Online: Factors associated with blood mercury concentrations and their interactions with three glutathione S-transferase genes (GSTT1, GSTM1, and GSTP1): an exposure assessment study of typically developing Jamaican children.
2024 Volume 24, Issue 1, Page(s) 14
Abstract: Background: Jamaican soil is abundant in heavy metals including mercury (Hg). Due to availability and ease of access, fish is a traditional dietary component in Jamaica and a significant source of Hg exposure. Mercury is a xenobiotic and known neuro- ... ...
Abstract | Background: Jamaican soil is abundant in heavy metals including mercury (Hg). Due to availability and ease of access, fish is a traditional dietary component in Jamaica and a significant source of Hg exposure. Mercury is a xenobiotic and known neuro-toxicant that affects children's neurodevelopment. Human glutathione S-transferase (GST) genes, including GSTT1, GSTM1, and GSTP1, affect Hg conjugation and elimination mechanisms. Methods: In this exposure assessment study we used data from 375 typically developing (TD) 2-8-year-old Jamaican children to explore the association between environmental Hg exposure, GST genes, and their interaction effects on blood Hg concentrations (BHgCs). We used multivariable general linear models (GLMs). Results: We identified the child's age, consumption of saltwater fish, canned fish (sardine, mackerel), string beans, grain, and starches (pasta, macaroni, noodles) as the environmental factors significantly associated with BHgCs (all P < 0.05). A significant interaction between consumption of canned fish (sardine, mackerel) and GSTP1 in relation to BHgC using either a co-dominant or recessive genetic model (overall interaction P = 0.01 and P < 0.01, respectively) indicated that consumption of canned fish (sardine, mackerel) was significantly associated with higher mean BHgC only among children with the GSTP1 Ile105Val, Ile/Ile [Ratio of mean Hg (95% CI) = 1.59 (1.09, 2.32), P = 0.02] and Ile/Val [Ratio of mean Hg (95% CI) = 1.46 (1.12, 1.91), P = 0.01] genotypes. Conclusions: Since this is the first study from Jamaica to report these findings, replication in other populations is recommended. |
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MeSH term(s) | Child ; Child, Preschool ; Humans ; Case-Control Studies ; Genetic Predisposition to Disease ; Genotype ; Glutathione Transferase/genetics ; Jamaica ; Mercury/blood ; Polymorphism, Genetic ; Risk Factors |
Chemical Substances | Glutathione Transferase (EC 2.5.1.18) ; GSTP1 protein, human (EC 2.5.1.18) ; Mercury (FXS1BY2PGL) ; glutathione S-transferase M1 (EC 2.5.1.18) ; glutathione S-transferase T1 (EC 2.5.1.-) |
Language | English |
Publishing date | 2024-01-04 |
Publishing country | England |
Document type | Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural |
ZDB-ID | 2041342-7 |
ISSN | 1471-2431 ; 1471-2431 |
ISSN (online) | 1471-2431 |
ISSN | 1471-2431 |
DOI | 10.1186/s12887-023-04452-w |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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