Associations between organochlorine pesticides and cognition in U.S. elders: National Health and Nutrition Examination Survey 1999–2002

Autor: Ki-Su Kim, Yu-Mi Lee, Ho-Won Lee, David R. Jacobs, Jr., Duk-Hee Lee
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Environment International, Vol 75, Iss , Pp 87-92 (2015)
Druh dokumentu: article
ISSN: 0160-4120
DOI: 10.1016/j.envint.2014.11.003
Popis: There is limited evidence about whether background exposure to organochlorine pesticides is related to impairment of cognitive function in general populations. This study was performed to investigate cross-sectional associations between serum concentrations of organochlorine pesticides and cognitive function, a predictor of dementia, among U.S. elders without overt dementia. Study subjects were 644 elders aged 60–85, participating in the National Health and Nutrition Examination Survey 1999–2002. We selected 6 organochlorine pesticides (p,p′-dichlorodiphenyltrichloroethane (DDT), p,p′-dichlorodiphenyldichloroethylene (DDE), trans-nonachlor, oxychlordane, heptachlor epoxide, and β-hexachlorocyclohexane) which were commonly detected in current general population. Cognitive function was assessed with the Digit-Symbol Substitution Test. All 6 compounds showed statistically significant or marginally significant inverse associations with cognitive score after adjusting for covariates including education levels. The strongest association was observed with p,p′-DDT. With the outcome of low cognitive score defined as
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