PMID- 8146225 OWN - NLM STAT- MEDLINE DCOM- 19940502 LR - 20190712 IS - 0091-3057 (Print) IS - 0091-3057 (Linking) VI - 47 IP - 2 DP - 1994 Feb TI - Hyperactivity in the offspring of nicotine-treated rats: role of the mesolimbic and nigrostriatal dopaminergic pathways. PG - 331-7 AB - To evaluate the involvement of the mesolimbic and nigrostriatal dopaminergic systems in hyperactivity in offspring of nicotine-treated dams, timed-pregnant Sprague-Dawley rats were implanted SC on gestational day 4 with osmotic minipumps to receive saline or nicotine (3 or 6 mg/kg/day) for 16 days. Hyperactive and nonhyperactive male offspring of nicotine-treated dams as well as nonhyperactive offspring of saline-treated dams were selected and sacrificed at day 22 postnatally. Discrete brain areas (the nucleus accumbens [NAcc], striatum [STR], frontal cortex [FC], ventral tegmental area [VTA], and substantia nigra [SN]) were microdissected for the evaluation of dopamine (DA) concentration and/or the D2 receptor subtype. Dopamine concentration was decreased in the VTA and STR but was increased in the SN of the hyperactive offspring. The reduction in striatal DA level was associated with a reduction in the number of D2 receptors in that area. The data suggest a role for the VTA and striatal dopaminergic system in offspring hyperactivity. FAU - Richardson, S A AU - Richardson SA AD - Department of Pharmacology, Howard University College of Medicine, Washington, DC 20059. FAU - Tizabi, Y AU - Tizabi Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Pharmacol Biochem Behav JT - Pharmacology, biochemistry, and behavior JID - 0367050 RN - 0 (Receptors, Dopamine D2) RN - 6M3C89ZY6R (Nicotine) RN - K5161X06LL (Cotinine) RN - VTD58H1Z2X (Dopamine) SB - IM MH - Animals MH - Behavior, Animal/drug effects MH - Birth Weight/drug effects MH - Brain Chemistry/drug effects MH - Corpus Striatum/*physiology MH - Cotinine/blood MH - Dopamine/*physiology MH - Female MH - Kinetics MH - Limbic System/drug effects/*physiology MH - Litter Size/drug effects MH - Male MH - Motor Activity/*drug effects MH - Neural Pathways/drug effects MH - Nicotine/blood/*pharmacology MH - Pregnancy MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Dopamine D2/drug effects MH - Sex Ratio MH - Substantia Nigra/*physiology EDAT- 1994/02/01 00:00 MHDA- 1994/02/01 00:01 CRDT- 1994/02/01 00:00 PHST- 1994/02/01 00:00 [pubmed] PHST- 1994/02/01 00:01 [medline] PHST- 1994/02/01 00:00 [entrez] AID - 0091-3057(94)90018-3 [pii] AID - 10.1016/0091-3057(94)90018-3 [doi] PST - ppublish SO - Pharmacol Biochem Behav. 1994 Feb;47(2):331-7. doi: 10.1016/0091-3057(94)90018-3.