PMID- 2879607 OWN - NLM STAT- MEDLINE DCOM- 19870310 LR - 20190613 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 398 IP - 1 DP - 1986 Nov 19 TI - Release of met-enkephalin from rat striatal slices: effect of amphetamine and fipexide. PG - 212-4 AB - The release of Met-enkephalin immunoreactive material (ME-IR) from rat striatal slices is affected by exposure to amphetamine and fipexide (chloro-4-phenoxy)-2-acetyl-1-(methylene-dioxy 3, 4-benzyl-4-piperazine) a psychostimulant drug with mild dopaminomimetic activity. Both amphetamine and fipexide inhibited in vitro the release of ME-IR. The same effect was observed after in vivo acute administration and is also maintained after chronic treatment. The action of fipexide and amphetamine is still present after reserpine pretreatment. The results indicate that fipexide may facilitate dopamine neurotransmission by inhibition of an enkephalinergic inhibitory feed-back circuit. FAU - Lucchi, L AU - Lucchi L FAU - Govoni, S AU - Govoni S FAU - Spano, P F AU - Spano PF FAU - Trabucchi, M AU - Trabucchi M LA - eng PT - Journal Article PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Amphetamines) RN - 0 (Central Nervous System Stimulants) RN - 0 (Piperazines) RN - 58569-55-4 (Enkephalin, Methionine) RN - RWP5GA015D (Potassium) RN - TG44VME01D (fipexide) SB - IM MH - Amphetamines/*pharmacology MH - Animals MH - Caudate Nucleus/drug effects/*metabolism MH - Central Nervous System Stimulants/pharmacology MH - Enkephalin, Methionine/*metabolism MH - Male MH - Piperazines/*pharmacology MH - Potassium/pharmacology MH - Rats MH - Rats, Inbred Strains EDAT- 1986/11/19 00:00 MHDA- 1986/11/19 00:01 CRDT- 1986/11/19 00:00 PHST- 1986/11/19 00:00 [pubmed] PHST- 1986/11/19 00:01 [medline] PHST- 1986/11/19 00:00 [entrez] AID - 0006-8993(86)91273-4 [pii] AID - 10.1016/0006-8993(86)91273-4 [doi] PST - ppublish SO - Brain Res. 1986 Nov 19;398(1):212-4. doi: 10.1016/0006-8993(86)91273-4.