PMID- 8981595 OWN - NLM STAT- MEDLINE DCOM- 19970328 LR - 20190712 IS - 0091-3057 (Print) IS - 0091-3057 (Linking) VI - 55 IP - 4 DP - 1996 Dec TI - Developmental consequences of intermittent and continuous prenatal exposure to 1,1,1-trichloroethane in mice. PG - 635-46 AB - The effects of 1,1,1-trichloroethane (TCE) on physical and behavioral development were examined in CD-1 mice prenatally exposed under two regimens. In the first study, pregnant mice were exposed to either 2,000 ppm TCE or filtered air for 17 hrs. during gestational days (GD) 12-17. A third group remained untreated. The results revealed no differences on pregnancy outcome. TCE-exposed pups gained less weight, exhibited delays in developmental landmarks and acquisition of the righting reflex, had poorer performance on tests of motor coordination and exhibited delays in negative geotaxis relative to sham or untreated pups. A second experiment was designed to more closely parallel the intermittent, acute, high-concentration pattern of solvent abuse. Pregnant mice were exposed for 60 min. to 8,000 ppm TCE or sham placement in exposure chambers three times/day during GD's 12-17. The results were very similar to what were obtained in the more continuous exposure study. TCE-exposed pups gained less weight, had delays in developmental landmarks and acquisition of the righting reflex and exhibited weaker grip strength, poorer negative geotaxis and less rooting intensity in comparison to sham pups. These data provide evidence for the behavioral and developmental teratogenicity of prenatal TCE exposure late in gestation. FAU - Jones, H E AU - Jones HE AD - Department of Pharmacology and Toxicology, Medical College of Virginia, Virginia Commonwealth University, Richmond 23298-0613, USA. FAU - Kunko, P M AU - Kunko PM FAU - Robinson, S E AU - Robinson SE FAU - Balster, R L AU - Balster RL LA - eng GR - DA03112/DA/NIDA NIH HHS/United States GR - DA05665/DA/NIDA NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Pharmacol Biochem Behav JT - Pharmacology, biochemistry, and behavior JID - 0367050 RN - 0 (Solvents) RN - 0 (Trichloroethanes) RN - 113C650IR1 (1,1,1-trichloroethane) SB - IM MH - Animals MH - Avoidance Learning/drug effects MH - Body Weight/drug effects MH - Dose-Response Relationship, Drug MH - Female MH - Gestational Age MH - Male MH - Mice MH - Mice, Inbred Strains MH - Motor Activity/drug effects MH - Nervous System/drug effects/*growth & development MH - Postural Balance/drug effects MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - Psychomotor Performance/drug effects MH - Reflex/drug effects MH - Solvents/administration & dosage/chemistry/*toxicity MH - Substance-Related Disorders/psychology MH - Trichloroethanes/administration & dosage/chemistry/*toxicity EDAT- 1996/12/01 00:00 MHDA- 1996/12/01 00:01 CRDT- 1996/12/01 00:00 PHST- 1996/12/01 00:00 [pubmed] PHST- 1996/12/01 00:01 [medline] PHST- 1996/12/01 00:00 [entrez] AID - S0091-3057(96)00288-2 [pii] AID - 10.1016/s0091-3057(96)00288-2 [doi] PST - ppublish SO - Pharmacol Biochem Behav. 1996 Dec;55(4):635-46. doi: 10.1016/s0091-3057(96)00288-2.