期刊
ENVIRONMENTAL RESEARCH
卷 109, 期 7, 页码 891-899出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2009.07.014
关键词
Agricultural pesticides; Cancer; Childhood leukemia; Environmental exposure; Epidemiology; Geographic information systems
资金
- NCI NIH HHS [R01-CA92674, R01 CA092674-01A1, R01 CA092674] Funding Source: Medline
- NIEHS NIH HHS [R01 ES009137, R01-ES09137, R01 ES009137-01A1] Funding Source: Medline
Ambient exposure from residential proximity to applications of agricultural pesticides may contribute to the risk of childhood acute lymphoblastic leukemia (ALL). Using residential histories collected from the families of 213 ALL cases and 268 matched controls enrolled in the Northern California Childhood Leukemia Study, the authors assessed residential proximity within a half-mile (804.5 m) of pesticide applications by linking address histories with reports of agricultural pesticide use. Proximity was ascertained during different time windows of exposure, including the first year of life and the child's lifetime through the date of diagnosis for cases or reference for controls. Agricultural pesticides were categorized a priori into groups based on similarities in toxicological effects, physicochemical properties, and target pests or uses. The effects of moderate and high exposure for each group of pesticides were estimated using conditional logistic regression. Elevated ALL risk was associated with lifetime moderate exposure, but not high exposure, to certain physicochemical categories of pesticides, including organophosphates, chlorinated phenols, and triazines, and with pesticides classified as insecticides or fumigants. A similar pattern was also observed for several toxicological groups of pesticides. These findings suggest future directions for the identification of specific pesticides that may play a role in the etiology of childhood leukemia. (C) 2009 Elsevier Inc. All rights reserved.
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