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Spyros P Nikas

5 papers in the library · publishing 2012-2026

Papers

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Dopamine, γ-aminobutyric acid, and glutamate balance in the nucleus accumbens shell: Differential effects of cannabinoid 1 receptor agonists Δ9-Tetrahydrocannabinol, AM11101, and AM8936.

Neuropharmacology June 1, 2026 Evan C Smith, Christos Iliopoulos-Tsoutsouvas, Markos-Orestis Georgiadis et al.

Despite being the most prevalently abused illicit drug class, the neurochemical effects of cannabinoids (CBs) in key reward-related brain regions are not fully understood. Here, we used in vivo microdialysis combined with liquid chromatograph mass spectrometry to delineate how single, intraperitoneal injections of delta-9-tetrahydrocannabinol (Δ9-THC), and synthetic partial (AM11101) and full...

Structural basis of THC analog activity at the Cannabinoid 1 receptor

Nature Communications January 8, 2025 T. Thorsen, Yashraj Kulkarni, David A. Sykes et al.

Tetrahydrocannabinol (THC) is the principal psychoactive compound derived from the cannabis plant Cannabis sativa and approved for emetic conditions, appetite stimulation and sleep apnea relief. THC’s psychoactive actions are mediated primarily by the cannabinoid receptor CB1. Here, we determine the cryo-EM structure of HU210, a THC analog and widely used tool compound, bound to CB1 and its...

Differential Enantiomer-Specific Signaling of Cannabidiol at CB1 Receptors.

Molecular Pharmacology December 2022 Taryn Bosquez-Berger, Sierra Wilson, Christos Iliopoulos-Tsoutsouvas et al.

The two main constituents of cannabis are Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD). While Δ9-THC pharmacology has been studied extensively, CBD-long considered inactive-is now the subject of vigorous research related to epilepsy, pain, and inflammation and is popularly embraced as a virtual cure-all. However, our understanding of CBD pharmacology remains limited, although CBD...

Comparisons of Δ9-Tetrahydrocannabinol and Anandamide on a Battery of Cognition-Related Behavior in Nonhuman Primates.

Journal of Pharmacology and Experimental Therapeutics January 29, 2016 Brian D Kangas, Michael Z. Leonard, Vidyanand G Shukla et al.

The primary psychoactive ingredient of marijuana, Δ(9)-tetrahydrocannabinol (Δ(9)-THC), has medicinal value but also produces unwanted deleterious effects on cognitive function, promoting the search for improved cannabinergic therapeutics. The present studies used a battery of touchscreen procedures in squirrel monkeys to compare the effects of different types of cannabinergic drugs on several...

AM2389, a high-affinity, in vivo potent CB1-receptor-selective cannabinergic ligand as evidenced by drug discrimination in rats and hypothermia testing in mice.

Psychopharmacology March 2012 Torbjörn U C Järbe, Sherrica Tai, Brian J LeMay et al.

The endocannabinoid signaling system (ECS) has been targeted for developing novel therapeutics since ECS dysfunction has been implicated in various pathologies. Current focus is on chemical modifications of the hexahydrocannabinol (HHC) nabilone (Cesamet(®)). To characterize the novel, high-affinity cannabinoid receptor 1 (CB(1)R) HHC-ligand AM2389...