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Abstract Title:

Exposure to phthalates in neonatal intensive care unit infants: urinary concentrations of monoesters and oxidative metabolites.

Abstract Source:

Environ Health Perspect. 2006 Sep;114(9):1424-31. PMID: 16966100

Abstract Author(s):

Jennifer Weuve, Brisa N Sánchez, Antonia M Calafat, Ted Schettler, Ronald A Green, Howard Hu, Russ Hauser

Article Affiliation:

Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA. jweuve@hsph.harvard.edu

Abstract:

OBJECTIVE: We previously demonstrated that among 54 infants in neonatal intensive care units, exposure to polyvinyl chloride plastic medical devices containing the plasticizer di(2-ethylhexyl) phthalate (DEHP) is associated with urinary concentrations of mono(2-ethylhexyl) phthalate (MEHP) , a DEHP metabolite. In this follow-up report, we studied the neonates' exposure to DEHP-containing devices in relation to urinary concentrations of two other DEHP metabolites, and to urinary concentrations of metabolites of dibutyl phthalate (DBP) and benzylbutyl phthalate (BzBP) , phthalates found in construction materials and personal care products. MEASUREMENTS: A priori, we classified the intensiveness of these 54 infants' exposure to DEHP-containing medical products. We measured three metabolites of DEHP in infants' urine: MEHP and two of its oxidative metabolites, mono(2-ethyl-5-hydroxylhexyl) phthalate (MEHHP) and mono(2-ethyl-5-oxohexyl) phthalate (MEOHP) . We also measured monobutyl phthalate (MBP) , a metabolite of DBP, and monobenzyl phthalate (MBzP), a metabolite of BzBP. RESULTS: Intensiveness of DEHP-containing product use was monotonically associated with all three DEHP metabolites. Urinary concentrations of MEHHP and MEOHP among infants in the high-DEHP-intensiveness group were 13-14 times the concentrations among infants in the low-intensiveness group (p

Study Type : Human Study
Additional Links
Problem Substances : Phthalates : CK(252) : AC(44)

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