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Search Program Faculty/Research

Gregory Collins, Ph.D.

Collins gt


Research in Dr. Greg Collins’ laboratory is broadly aimed at understanding the determinants of drug-taking and drug-seeking behaviors. 

Accordingly, we utilize a variety of behavioral and physiological procedures including intravenous self-administration and implantable telemetry combined with quantitative analyses to (1) identify factors that alter vulnerability to drug abuse and relapse; (2) characterize the abuse-related and toxic effects of drugs of abuse; and (3) develop and test novel pharmacotherapies for the treatment of substance use disorders.

Current research is focused on characterizing the abuse-related and toxic effects of synthetic cathinones (e.g., MDPV, α-PVP, and methylone), an emerging class of abused drugs commonly referred to as “bath salts.” Although their composition can vary greatly, “bath salts” are most often mixtures of multiple pharmacologically active compounds. 

Thus, these studies utilize highly quantitative behavioral and pharmacological procedures to determining whether the reinforcing, discriminative stimulus, and toxic (behavioral and cardiovascular) effects of synthetic cathinones are enhanced when administered in combination with common “bath salts” constituents (e.g., other cathinones or caffeine).

Selected Publications 

Gannon BM, Galindo KI, Mesmin MP, Sulima A, Rice KC, Collins GT. (2017) Relative reinforcing effects of second-generation synthetic cathinones: acquisition of self-administration and fixed ratio dose-response curves in rats. Neuropharmacology. (In Press) [PMID: 28811192]

Gannon BM, Galindo KI, Mesmin MP, Rice KC, Collins GT. (2017) Reinforcing effects of binary mixtures of common bath salts constituents: studies with 3,4-methylenedioxypyrovalerone (MDPV), 3,4-methylenedioxymethcathinone (methylone), and caffeine in rats. Neuropsychopharmacology. (In Press) [PMID: 28677665]

Gannon BM, Galindo KI, Rice KC, Collins GT. (2017) Individual differences in the relative reinforcing effects of 3,4-methylenedioxypyrovalerone (MDPV) under fixed and progressive ratio schedules of reinforcement in rats. Journal of Pharmacology and Experimental Therapeutics. 361(1):181-189. [PMID: 28179474]

Collins GT, Gerak LR, Javors MA, and France CP. (2016) Lorcaserin reduces the discriminative stimulus and reinforcing effects of cocaine in rhesus monkeys. Journal of Pharmacology and Experimental Therapeutics. 356(1):85-95. [PMID: 26534942]

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Assistant Professor / Tenure Track


Ph.D., Pharmacology, University of Michigan Medical School


Office: (210) 567-4172


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