All ETDs from UAB

Document Type

Thesis

Date of Award

1980

Abstract

Following the suggestion by Smythies that the major hallucinogens, mescaline, N,N-dimethyltryptamine (DMT) and d-lysergic acid diethylamide (d-LSD) all act at the same site, namely, the serotonin (5-hydroxytryptamine) receptor in the brain, it was found that 1-methyl-1,2,5, 6-tetrahydropyridine-3-(N,N-diethylcarboxamide) (THPC), a compound similar in structure to the D-ring of LSD (Figure 1), blocked the behavioral disruption in rats induced by LSD as measured by Bovet-Gatti profiles on a Sidman avoidance schedule. Further studies by Christian et al. firmly established that THPC acts as a LSD antagonist since binding of LSD to a high affinity site on thesynaptosomal membrane is completely blocked by THPC. Dyer et al. showed that contractions of sheep umbilical vasculature induced by 5-hydroxytryptamine, mescaline and LSD are blocked by THPC acting as a serotonin receptor antagonist. This study also demonstrated that although THPC acts as a hallucinogen antagonist, it is not as potent as other known antagonists such as 2-bromolysergic acid die-thylamide or cinanserin (N-[2-(3-N,N-dimethylaminopropylthio)-phenyl) cinnamide).

Comments

MS - Master of Science/Master of Surgery; ProQuest publication number 31752022

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