Effects of 6-methoxy-1,2,3,4-tetrahydro-beta-carboline (6-MeO-THbetaC) on audiogenic seizures in DBA/2J mice. 1980

D L Sparks, and N S Buckholtz

It was found previously that 6-methoxy-1,2,3,4-tetrahydro-beta-carboline (6-MeO-THbetaC) increased brain concentration of the neurotransmitter serotonin (5-HT) and decreased the concentration of its metabolite 5-hydroxyindole acetic acid (5-HIAA) at the same time the compound attenuated audiogenic seizures (AGS) in DBA/2J mice. In the present study we determined the time-course and dose-response effects of 6-MeO-THbetaC for blockade of AGS. Drugs sharing common effects with 6-MeO-THbetaC were also tested. At a dose of 100 mg/kg, 6-MeO-THbetaC blocked AGS between 10 min and 12 hr after injection, with maximal inhibition at 1 hr at which time a dose-related decrease in AGS was also demonstrated. All of the drugs tested which blocked AGS, including 6-MeO-THbetaC, THbetaC, 5-Hydroxytryptophan, chlorimipramine and pargyline, have biochemical similarities suggesting that facilitating serotonin function may be responsible for seizure-attenuating effects.

UI MeSH Term Description Entries
D007211 Indoles Benzopyrroles with the nitrogen at the number one carbon adjacent to the benzyl portion, in contrast to ISOINDOLES which have the nitrogen away from the six-membered ring.
D008732 Methoxydimethyltryptamines Compounds that contain the biogenic monoamine tryptamine and are substituted with one methoxy group and two methyl groups. Members of this group include several potent serotonergic hallucinogens found in several unrelated plants, skins of certain toads, and in mammalian brains. They are possibly involved in the etiology of schizophrenia. Methylbufotenin,5-Methoxy-N,N-Dimethyltryptamine,Methoxydimethyltryptamine,N,N-Dimethyl-5-Methoxytryptamine,5 Methoxy N,N Dimethyltryptamine,N,N Dimethyl 5 Methoxytryptamine
D008811 Mice, Inbred DBA An inbred strain of mouse. Specific substrains are used in a variety of areas of BIOMEDICAL RESEARCH such as DBA/1J, which is used as a model for RHEUMATOID ARTHRITIS. Mice, DBA,Mouse, DBA,Mouse, Inbred DBA,DBA Mice,DBA Mice, Inbred,DBA Mouse,DBA Mouse, Inbred,Inbred DBA Mice,Inbred DBA Mouse
D010293 Pargyline A monoamine oxidase inhibitor with antihypertensive properties. Pargyline Hydrochloride,Hydrochloride, Pargyline
D011437 Propylamines Derivatives of propylamine (the structural formula NH2CH2CH2CH3).
D011814 Quipazine A pharmacologic congener of serotonin that contracts smooth muscle and has actions similar to those of tricyclic antidepressants. It has been proposed as an oxytocic. 2-(1-Piperazinyl)quinoline,MA-1291,Quipazine Hydrochloride,Quipazine Maleate,Quipazine Maleate (1:1),MA 1291,MA1291
D002243 Carbolines A group of pyrido-indole compounds. Included are any points of fusion of pyridine with the five-membered ring of indole and any derivatives of these compounds. These are similar to CARBAZOLES which are benzo-indoles. Carboline,Pyrido(4,3-b)Indole,Beta-Carbolines,Pyrido(4,3-b)Indoles,Beta Carbolines
D002997 Clomipramine A tricyclic antidepressant similar to IMIPRAMINE that selectively inhibits the uptake of serotonin in the brain. It is readily absorbed from the gastrointestinal tract and demethylated in the liver to form its primary active metabolite, desmethylclomipramine. Chlorimipramine,Anafranil,Chlomipramine,Clomipramine Hydrochloride,Clomipramine Maleate (1:1),Clomipramine Monohydrochloride,Hydiphen,Hydrochloride, Clomipramine,Monohydrochloride, Clomipramine
D003010 Clorgyline An antidepressive agent and monoamine oxidase inhibitor related to PARGYLINE. Clorgilin,Chlorgyline,Clorgiline
D004130 N,N-Dimethyltryptamine An N-methylated indoleamine derivative and serotonergic hallucinogen which occurs naturally and ubiquitously in several plant species including Psychotria veridis. It also occurs in trace amounts in mammalian brain, blood, and urine, and is known to act as an agonist or antagonist of certain SEROTONIN RECEPTORS. Dimethyltryptamine,N,N Dimethyltryptamine

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