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Education: Virginia Commonwealth University, 1991 Research interests: Δ9-Tetrahydrocannabinol (Δ9-THC), the primary psychoactive substituent of marijuana, produces its behavioral effects through interaction with a neuromodulatory lipid system in the brain that is normally activated by several endogenous substances, including anandamide and 2-arachidonylglycerol. This endocannabinoid system is involved in a variety of physiological processes such as brain reward, cognition, appetite regulation, and pain perception. While the distinct roles of the different endocannabinoids in these various processes have not been completely delineated, this area has received intense research attention from several labs here and elsewhere. Recent research in my lab has focused primarily on the preclinical behavioral pharmacology of plant-derived and synthetic cannabinoids and their interactions with the endocannabinoid system as well as with other neurotransmitter systems, especially those involved in mediation of reward (e.g., dopamine). Of particular interest are two interrelated research questions: (1) What is the nature of the relationship between the intoxicating properties of cannabinoids and their other pharmacological effects (e.g., cognitive impairment, reward)? and (2) What roles do the endocannabinoid system play in mediation / modulation of the hedonic properties of natural and drug-induced reward? Given that marijuana abuse in humans is most often initiated during adolescence and that early use is typically associated with greater long-term impairment, some of my research effort has also been concentrated on examination of the short- and long-term effects of exposure to Δ9-THC during this vulnerable developmental period in adolescent (vs. adult) rats of both sexes. Working through an extensive collaborative network of investigators within and outside of the department and university, my lab is participating in a coordinated investigation of brain-behavior relationships related to pharmacological manipulation of the endocannabinoid system. Wiley JL, Burston JJ, Leggett DC, Alekseeva OO, Razdan RK, Mahadevan A,
Martin BR. (2005). CB1 cannabinoid receptor-mediated modulation of food
intake in mice. Br J Pharmacol, 145: 293-300. |
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