PMID- 1826785 OWN - NLM STAT- MEDLINE DCOM- 19910523 LR - 20220311 IS - 0091-3057 (Print) IS - 0091-3057 (Linking) VI - 38 IP - 1 DP - 1991 Jan TI - 5-Iodo-2-aminoindan, a nonneurotoxic analogue of p-iodoamphetamine. PG - 135-9 AB - A rigid analogue, 5-iodo-2-aminoindan (5-IAI), of the serotonin neurotoxic halogenated amphetamine p-iodoamphetamine (PIA) was pharmacologically evaluated for production of serotonin neurotoxicity. A comparison was also made between 5-IAI and PIA in the two-lever drug discrimination paradigm in rats trained to discriminate saline from 3,4-methylenedioxymethamphetamine (MDMA) or saline from the alpha-ethyl homologue of MDMA, MBDB. PIA and 5-IAI were both behaviorally active, and fully substituted in both groups of animals, but were considerably less potent than p-chloroamphetamine (PCA). PIA had about twice the potency of PCA as an inhibitor of [3H]-5-HT uptake in rat brain cortical synaptosomes, while 5-IAI was only about 75% as potent as PCA in this assay. A single 40 mg/kg dose of PIA resulted in a 40% reduction of 5-HT and 5-HIAA levels and in the number of 5-HT uptake sites in rat cortex at one week sacrifice. The same dose of 5-IAI with one week sacrifice led to about a 15% decrease in 5-HIAA levels and number of 5-HT uptake sites, but only the latter was statistically significant. In rat hippocampus, PIA gave significant decreases in all serotonin markers examined, while 5-IAI slightly but significantly decreased only 5-HT levels. Neither compound produced any change in catecholamine or catecholamine metabolite levels. The results confirm earlier reports of the selective serotonin neurotoxicity of PIA, which is less severe than that of PCA, and also demonstrate that its rigid analogue 5-IAI does not appear to cause significant serotonin deficits in the rat. FAU - Nichols, D E AU - Nichols DE AD - Department of Medicinal Chemistry and Pharmacognosy, School of Pharmacyand Pharmacal Sciences, Purdue University, West Lafayette, IN 47907. FAU - Johnson, M P AU - Johnson MP FAU - Oberlender, R AU - Oberlender R LA - eng GR - DA-04578/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 (Amphetamines) RN - 0 (Indans) RN - 0 (Iodine Radioisotopes) RN - 0 (Piperidines) RN - 21894-72-4 (4-iodoamphetamine) RN - 41VRH5220H (Paroxetine) RN - 64-12-0 (p-Chloroamphetamine) RN - 7X16E45Y1X (5-iodo-2-aminoindan) SB - IM MH - Amphetamines/*pharmacology MH - Animals MH - Autoradiography MH - Binding, Competitive/drug effects MH - Brain/anatomy & histology MH - Brain Chemistry/drug effects MH - Chromatography, High Pressure Liquid MH - Conditioning, Operant/drug effects MH - Discrimination, Psychological/drug effects MH - Dose-Response Relationship, Drug MH - Electrochemistry MH - Indans/*pharmacology MH - Iodine Radioisotopes MH - Male MH - Paroxetine MH - Piperidines/metabolism MH - Rats MH - Rats, Inbred Strains MH - p-Chloroamphetamine/metabolism EDAT- 1991/01/01 00:00 MHDA- 1991/01/01 00:01 CRDT- 1991/01/01 00:00 PHST- 1991/01/01 00:00 [pubmed] PHST- 1991/01/01 00:01 [medline] PHST- 1991/01/01 00:00 [entrez] AID - 0091-3057(91)90601-W [pii] AID - 10.1016/0091-3057(91)90601-w [doi] PST - ppublish SO - Pharmacol Biochem Behav. 1991 Jan;38(1):135-9. doi: 10.1016/0091-3057(91)90601-w.