title: Selective release of serotonin by endogenous alkaloids, 1-methyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinolines, (R)- and (S)salsolinol, in the rat striatum; in vivo microdialysis study.
abstract: Dopamine-derived 1-methyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinolines, (R)- and (S)salsolinol, released an enormous amount of serotonin in the rat striatum; the concentration of serotonin increased from undetectable level to 2.53 +/- 0.12 and 3.69 +/- 0.01 microM after perfusion of (R)- and (S)salsolinol, respectively. Salsolinols increased extracellular dopamine level, but to a much lesser degree than serotonin. Other naturally occurring isoquinolines with catechol structure released serotonin and dopamine, but salsolinols were the most potent and selective releaser of serotonin. Serotonin release by salsolinols may be involved in some psychiatric symptoms in L-DOPA therapy or alcoholism.
authors: Department of Neurology, Nagoya University School of Medicine, Japan.
authors: W
authors: W
authors: Maruyama
authors: D
authors: D
authors: Nakahara
authors: P
authors: P
authors: Dostert
authors: H
authors: H
authors: Hashiguchi
authors: S
authors: S
authors: Ohta
authors: M
authors: M
authors: Hirobe
authors: A
authors: A
authors: Takahashi
authors: T
authors: T
authors: Nagatsu
authors: M
authors: M
authors: Naoi
mesh_terms: D000470:Alkaloids / Q000494:pharmacology*; D000818:Animals; D003342:Corpus Striatum / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism*; D003956:Dialysis; D004298:Dopamine / Q000378:metabolism; D005110:Extracellular Space / Q000187:drug effects / Q000378:metabolism; D007546:Isoquinolines / Q000494:pharmacology*; D008297:Male; D008995:Monoamine Oxidase / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D012701:Serotonin / Q000378:metabolism*; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D000470:Alkaloids; D007546:Isoquinolines; D012701:Serotonin; C036617:salsolinol; D008995:Monoamine Oxidase; D004298:Dopamine