PMID- 11485838 OWN - NLM STAT- MEDLINE DCOM- 20011204 LR - 20190921 IS - 0892-0362 (Print) IS - 0892-0362 (Linking) VI - 23 IP - 4 DP - 2001 Jul-Aug TI - Effect of prenatal ethanol exposure during the brain growth spurt of the guinea pig. PG - 355-64 AB - This study tested the hypothesis that prenatal ethanol exposure during the last third of gestation, including the brain growth spurt (BGS), in the guinea pig produces neurobehavioural teratogenicity, manifesting as brain growth restriction and hyperactivity. Pregnant guinea pigs (term, about gestational day (GD) 68) received oral administration of ethanol (2 g/kg maternal body weight per day on GD 43 and/or GD 44 and then 4 g/kg maternal body weight per day from GD 45 to GD 62), isocaloric-sucrose/pair-feeding, or water. Maternal blood ethanol concentration (BEC) on GD 57 or 58, at 1 h after the daily dose, was 340+/-76 mg/dl (n=8). Ethanol treatment decreased brain, cerebral cortical, hippocampal, and cerebellar weights at GD 63 (P<0.05), and decreased brain and cerebral cortical weights at postnatal day 10 (P<0.05), with no effect on body weight and no apparent effect on spontaneous locomotor activity. The data demonstrate that, in the guinea pig, prenatal ethanol exposure during the last third of gestation, including the BGS, decreases brain weight that persists into postnatal life, which is associated with growth restriction of the cerebral cortex. However, this prenatal ethanol exposure regimen, including the BGS, does not increase spontaneous locomotor activity in contrast to the persistent hyperactivity that occurs after chronic ethanol exposure throughout gestation. FAU - Byrnes, M L AU - Byrnes ML AD - Department of Pharmacology and Toxicology, Faculty of Health Sciences, Queen's University, Kingston, Ontario, Canada K7L 3N6. FAU - Reynolds, J N AU - Reynolds JN FAU - Brien, J F AU - Brien JF LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Neurotoxicol Teratol JT - Neurotoxicology and teratology JID - 8709538 RN - 0 (Teratogens) RN - 3K9958V90M (Ethanol) SB - IM MH - Animals MH - Animals, Newborn MH - Body Weight/drug effects MH - Brain/drug effects/*embryology/growth & development MH - Cerebral Cortex/*drug effects/growth & development MH - Energy Intake/drug effects MH - Ethanol/blood/*poisoning MH - Female MH - Gestational Age MH - Guinea Pigs MH - Motor Activity/drug effects MH - Organ Size/drug effects MH - Pregnancy MH - Pregnancy, Animal/drug effects/*physiology MH - *Prenatal Exposure Delayed Effects MH - *Teratogens EDAT- 2001/08/04 10:00 MHDA- 2002/01/05 10:01 CRDT- 2001/08/04 10:00 PHST- 2001/08/04 10:00 [pubmed] PHST- 2002/01/05 10:01 [medline] PHST- 2001/08/04 10:00 [entrez] AID - S0892-0362(01)00150-7 [pii] AID - 10.1016/s0892-0362(01)00150-7 [doi] PST - ppublish SO - Neurotoxicol Teratol. 2001 Jul-Aug;23(4):355-64. doi: 10.1016/s0892-0362(01)00150-7.