| pubmed-article:16002382 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:16002382 | lifeskim:mentions | umls-concept:C0008059 | lld:lifeskim |
| pubmed-article:16002382 | lifeskim:mentions | umls-concept:C0035820 | lld:lifeskim |
| pubmed-article:16002382 | lifeskim:mentions | umls-concept:C0012655 | lld:lifeskim |
| pubmed-article:16002382 | lifeskim:mentions | umls-concept:C0035647 | lld:lifeskim |
| pubmed-article:16002382 | lifeskim:mentions | umls-concept:C0006118 | lld:lifeskim |
| pubmed-article:16002382 | lifeskim:mentions | umls-concept:C0163401 | lld:lifeskim |
| pubmed-article:16002382 | lifeskim:mentions | umls-concept:C1418754 | lld:lifeskim |
| pubmed-article:16002382 | lifeskim:mentions | umls-concept:C0301172 | lld:lifeskim |
| pubmed-article:16002382 | lifeskim:mentions | umls-concept:C0052451 | lld:lifeskim |
| pubmed-article:16002382 | pubmed:issue | 7 | lld:pubmed |
| pubmed-article:16002382 | pubmed:dateCreated | 2005-7-8 | lld:pubmed |
| pubmed-article:16002382 | pubmed:abstractText | Prior research suggests that childhood brain tumors (CBTs) may be associated with exposure to pesticides. Organophosphorus insecticides (OPs) target the developing nervous system, and until recently, the most common residential insecticides were chlorpyrifos and diazinon, two OPs metabolized in the body through the cytochrome P450/paraoxonase 1 (PON1) pathway. To investigate whether two common PON1 polymorphisms, C-108T and Q192R, are associated with CBT occurrence, we conducted a population-based study of 66 cases and 236 controls using DNA from neonatal screening archive specimens in Washington State, linked to interview data. The risk of CBT was nonsignificantly increased in relation to the inefficient PON1 promoter allele [per PON1(-108T) allele, relative to PON1(-108CC): odds ratio (OR) = 1.4; 95% confidence interval (CI), 1.0-2.2; p-value for trend = 0.07]. Notably, this association was strongest and statistically significant among children whose mothers reported chemical treatment of the home for pests during pregnancy or childhood (per PON1(-108T) allele: among exposed, OR = 2.6; 95% CI, 1.2-5.5; among unexposed, OR = 0.9; 95% CI, 0.5-1.6) and for primitive neuroectodermal tumors (per PON1(-108T) allele: OR = 2.4; 95% CI, 1.1-5.4). The Q192R polymorphism, which alters the structure of PON1 and influences enzyme activity in a substrate-dependent manner, was not associated with CBT risk, nor was the PON1(C-108T/Q192R) haplotype. These results are consistent with an inverse association between PON1 levels and CBT occurrence, perhaps because of PON1's ability to detoxify OPs common in children's environments. Larger studies that measure plasma PON1 levels and incorporate more accurate estimates of pesticide exposure will be required to confirm these observations. | lld:pubmed |
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| pubmed-article:16002382 | pubmed:language | eng | lld:pubmed |
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| pubmed-article:16002382 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:16002382 | pubmed:month | Jul | lld:pubmed |
| pubmed-article:16002382 | pubmed:issn | 0091-6765 | lld:pubmed |
| pubmed-article:16002382 | pubmed:author | pubmed-author:MuellerBeth... | lld:pubmed |
| pubmed-article:16002382 | pubmed:author | pubmed-author:CheckowayHarv... | lld:pubmed |
| pubmed-article:16002382 | pubmed:author | pubmed-author:FarinFederico... | lld:pubmed |
| pubmed-article:16002382 | pubmed:author | pubmed-author:De... | lld:pubmed |
| pubmed-article:16002382 | pubmed:author | pubmed-author:ViernesHannah... | lld:pubmed |
| pubmed-article:16002382 | pubmed:author | pubmed-author:Searles... | lld:pubmed |
| pubmed-article:16002382 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:16002382 | pubmed:volume | 113 | lld:pubmed |
| pubmed-article:16002382 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:16002382 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:16002382 | pubmed:pagination | 909-13 | lld:pubmed |
| pubmed-article:16002382 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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| pubmed-article:16002382 | pubmed:year | 2005 | lld:pubmed |
| pubmed-article:16002382 | pubmed:articleTitle | Risk of brain tumors in children and susceptibility to organophosphorus insecticides: the potential role of paraoxonase (PON1). | lld:pubmed |
| pubmed-article:16002382 | pubmed:affiliation | Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109-1024, USA. snielsen@fhcrc.org | lld:pubmed |
| pubmed-article:16002382 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:16002382 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
| pubmed-article:16002382 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
| pubmed-article:16002382 | pubmed:publicationType | Research Support, N.I.H., Extramural | lld:pubmed |
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