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

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

authors

Weuve J,Sánchez BN,Calafat AM,Schettler T,Green RA,Hu H,Hauser R

doi

10.1289/ehp.8926

subject

Has Abstract

pub_date

2006-09-01 00:00:00

pages

1424-31

issue

9

eissn

0091-6765

issn

1552-9924

journal_volume

114

pub_type

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