PMID- 16457985 OWN - NLM STAT- MEDLINE DCOM- 20060628 LR - 20240408 IS - 0892-0362 (Print) IS - 1872-9738 (Electronic) IS - 0892-0362 (Linking) VI - 28 IP - 2 DP - 2006 Mar-Apr TI - Perinatal ethanol exposure alters met-enkephalin levels of male and female rats. PG - 238-44 AB - This study used a rat model of Fetal Alcohol Syndrome to investigate whether combined prenatal and postnatal ethanol exposure affects met-enkephalin levels in the brains of male and female Long-Evans adult rats. Intragastric ethanol was administered to a group of rats (ET) from gestational day (GD) 1 through 22 and from postnatal day (PD) 2 through 10. The control groups consisted of a nontreated control group (NTC) and an intubated control group (IC) that received the intragastric intubation procedure but no exposure to ethanol. We measured met-enkephalin levels in the prefrontal cortex, nucleus accumbens, hypothalamus, central and basolateral nucleus of amygdala and ventral tegmental area. Met-enkephalin levels in the hypothalamus of male and female ET animals were significantly higher than those in either the NTC or IC animals. Met-enkephalin levels in the central nucleus of the amygdala of male and female ET animals were significantly lower than the levels in the NTC animals. Met-enkephalin levels in the nucleus accumbens of ET females were significantly greater than those in the IC females. These results demonstrate that the combination of prenatal and postnatal ethanol exposure affects basal met-enkephalin levels in specific regions in a sex-specific manner. These changes in met-enkephalin levels may explain how early ethanol exposure affects opioid-regulated behaviors such as social play, sexual behavior, and other social behaviors. FAU - Lugo, Joaquin N Jr AU - Lugo JN Jr AD - Department of Psychology, University of South Carolina, Columbia, SC 29208, USA. jlugo@bcm.tmc.edu FAU - Wilson, Marlene A AU - Wilson MA FAU - Kelly, Sandra J AU - Kelly SJ LA - eng GR - AA05583/AA/NIAAA NIH HHS/United States GR - F31 AA005583/AA/NIAAA NIH HHS/United States GR - R01 AA11566/AA/NIAAA NIH HHS/United States GR - R01 MH63344/MH/NIMH NIH HHS/United States GR - R01 MH063344/MH/NIMH NIH HHS/United States GR - R01 AA011566/AA/NIAAA NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20060202 PL - United States TA - Neurotoxicol Teratol JT - Neurotoxicology and teratology JID - 8709538 RN - 0 (Central Nervous System Depressants) RN - 3K9958V90M (Ethanol) RN - 58569-55-4 (Enkephalin, Methionine) SB - IM MH - Analysis of Variance MH - Animals MH - Animals, Newborn MH - Birth Weight/drug effects MH - Brain/*drug effects/embryology/growth & development/metabolism MH - Brain Chemistry/drug effects MH - Central Nervous System Depressants/*administration & dosage/blood MH - Disease Models, Animal MH - Drug Administration Routes MH - Enkephalin, Methionine/*metabolism MH - Ethanol/*administration & dosage/blood MH - Female MH - Fetal Alcohol Spectrum Disorders/etiology/metabolism MH - Gestational Age MH - Humans MH - Male MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - Rats MH - Rats, Long-Evans MH - *Sex Characteristics PMC - PMC3596822 MID - NIHMS448035 EDAT- 2006/02/07 09:00 MHDA- 2006/06/29 09:00 PMCR- 2013/03/14 CRDT- 2006/02/07 09:00 PHST- 2005/07/11 00:00 [received] PHST- 2005/12/03 00:00 [revised] PHST- 2005/12/05 00:00 [accepted] PHST- 2006/02/07 09:00 [pubmed] PHST- 2006/06/29 09:00 [medline] PHST- 2006/02/07 09:00 [entrez] PHST- 2013/03/14 00:00 [pmc-release] AID - S0892-0362(05)00182-0 [pii] AID - 10.1016/j.ntt.2005.12.004 [doi] PST - ppublish SO - Neurotoxicol Teratol. 2006 Mar-Apr;28(2):238-44. doi: 10.1016/j.ntt.2005.12.004. Epub 2006 Feb 2.