PMID- 23893927 OWN - NLM STAT- MEDLINE DCOM- 20140331 LR - 20211021 IS - 1542-0760 (Electronic) IS - 1542-0752 (Print) IS - 1542-0752 (Linking) VI - 97 IP - 8 DP - 2013 Aug TI - Evaluating the effects of maternal exposure to benzene, toluene, ethyl benzene, and xylene on oral clefts among offspring in Texas: 1999-2008. PG - 532-7 LID - 10.1002/bdra.23139 [doi] AB - BACKGROUND: There is evidence from previous studies that maternal occupational exposure to hazardous air pollutants (HAPs) is positively associated with oral clefts; however, studies evaluating the association between residential exposure to these toxicants and oral clefts are lacking. Therefore, our goal was to conduct a case-control study examining the association between estimated maternal residential exposure to benzene, toluene, ethyl benzene, and xylene (BTEX) and the risk of oral clefts among offspring. METHODS: Data on 6045 nonsyndromic isolated oral cleft cases (3915 cleft lip with or without cleft palate [CL +/- P] and 2130 nonsyndromic isolated cleft palate [CP] cases) delivered between 1999 and 2008 were obtained from the Texas Birth Defects Registry. The control group was a sample of unaffected live births, frequency matched to cases on year of birth. Census tract-level estimates of annual average exposures were obtained from the U.S. Environmental Protection Agency 2005 Hazardous Air Pollutant Exposure Model (HAPEM5) for each pollutant and assigned to each subject based on maternal residence during pregnancy. Logistic regression was used to assess the relationship between estimated maternal exposure to each pollutant (BTEX) separately and the risk of oral clefts in offspring. RESULTS: High estimated maternal exposure to benzene was not associated with oral clefts, compared with low estimated exposure (CL +/- P adjusted OR = 0.95; 95% CI = 0.81 - 1.12; CP adjusted OR = 0.85; 95% CI = 0.67 - 1.09). Similar results were seen for the other pollutants. CONCLUSION: In our study, there was no evidence that maternal exposure to environmental levels of BTEX was associated with oral clefts. CI - Copyright (c) 2013 Wiley Periodicals, Inc. FAU - Ramakrishnan, Anushuya AU - Ramakrishnan A AD - Division of Epidemiology, Human Genetics and Environmental Sciences, University of Texas, School of Public Health, Houston, Texas 77030, USA. FAU - Lupo, Philip J AU - Lupo PJ FAU - Agopian, A J AU - Agopian AJ FAU - Linder, Stephen H AU - Linder SH FAU - Stock, Thomas H AU - Stock TH FAU - Langlois, Peter H AU - Langlois PH FAU - Craft, Elena AU - Craft E LA - eng GR - R03 DE021739/DE/NIDCR NIH HHS/United States GR - U01 DD000494/DD/NCBDD CDC HHS/United States GR - U01DD000494/DD/NCBDD CDC HHS/United States GR - 1R03DE02173901A1/DE/NIDCR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, P.H.S. DEP - 20130725 PL - United States TA - Birth Defects Res A Clin Mol Teratol JT - Birth defects research. Part A, Clinical and molecular teratology JID - 101155107 RN - 0 (Air Pollutants) RN - 0 (Benzene Derivatives) RN - 0 (Xylenes) RN - 3FPU23BG52 (Toluene) RN - J64922108F (Benzene) RN - L5I45M5G0O (ethylbenzene) RN - Orofacial Cleft 1 SB - IM MH - Adult MH - Air Pollutants/*adverse effects MH - Benzene/metabolism MH - Benzene Derivatives/metabolism MH - Brain/*abnormalities MH - Case-Control Studies MH - *Cleft Lip/chemically induced/epidemiology/etiology MH - *Cleft Palate/chemically induced/epidemiology/etiology MH - Environmental Exposure/*adverse effects MH - Female MH - Humans MH - Male MH - Maternal Exposure/*adverse effects MH - Pregnancy MH - Risk MH - Toluene/metabolism MH - Xylenes/metabolism MH - Young Adult PMC - PMC3771492 MID - NIHMS511822 OTO - NOTNLM OT - benzene OT - epidemiology OT - hazardous air pollutants OT - maternal exposure OT - oral clefts EDAT- 2013/07/31 06:00 MHDA- 2014/04/01 06:00 PMCR- 2014/08/01 CRDT- 2013/07/30 06:00 PHST- 2013/01/28 00:00 [received] PHST- 2013/03/11 00:00 [revised] PHST- 2013/03/17 00:00 [accepted] PHST- 2013/07/30 06:00 [entrez] PHST- 2013/07/31 06:00 [pubmed] PHST- 2014/04/01 06:00 [medline] PHST- 2014/08/01 00:00 [pmc-release] AID - 10.1002/bdra.23139 [doi] PST - ppublish SO - Birth Defects Res A Clin Mol Teratol. 2013 Aug;97(8):532-7. doi: 10.1002/bdra.23139. Epub 2013 Jul 25.