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Pesticide urinary metabolite levels in asthmatic children residing in subsidized housing
Werthmann, D., Dan Stout, G. Adamkiewicz, AND F. Rabito. Pesticide urinary metabolite levels in asthmatic children residing in subsidized housing. 2018 ISES-ISEE Joint Annual Meeting, Ottawa, CANADA, August 26 - 30, 2018.
Presented at ISES-ISEE 2018.
We examined urinary pesticide (UP) metabolite levels in asthmatic children residing in subsidized housing in New Orleans, Louisiana and compared these levels between children residing in green and non-green housing. Morning void samples were collected from 68 children (aged 7-12 years) at three time points between 2014 and 2016. 97% of children provided 3 urine samples. Urine samples were analyzed for seven pesticide metabolites (3 organophosphates: TCPY, IMPY, PNP; 3 pyrethroids: 4-F-3-PBA, 3-PBA, trans-DCCA; and 1 herbicide: 2,4-D). Metabolites were creatinine-adjusted and natural log transformed. Children were classified as residing in green housing if the home was constructed with low VOC materials and utilized integrated pest management. Differences in metabolite levels were analyzed using generalized estimating equations. Four metabolites (2,4-D, TCPY, 3-PBA, PNP) were detected in >90% of samples. IMPY was detected in 52% of samples, 4-F-3-PBA and trans-DCCA were not frequently detected (<9%, <13%, respectively). There were no statistically significant differences in UP level over time for any metabolite. There were lower levels of 4-F-3-PBA (β=-1.23, p=0.11), TCPY (β=-0.05, p=0.63), and PNP (β=-0.01, p=0.93) for children living in green housing. 2,4-D (β=0.09 p=0.43), 3-PBA (β=0.08 p=0.63), IMPY (β=0.02 p=0.90), and trans-DCCA (β=0.37p=0.07) levels were higher for those in green housing. None of the differences in housing type reached statistical significance. In models examining the interaction between housing type and time, there were no statistically significant differences between green and non-green housing at any time point. These results suggest that asthmatic children residing in subsidized housing in New Orleans are chronically exposed to low levels of pesticides resulting in limited variability of UP metabolite. We found no or narrow differences in UP levels between children residing in green housing compared to non-green housing.
Record Details:Record Type: DOCUMENT (PRESENTATION/POSTER)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
SYSTEMS EXPOSURE DIVISION