Therapeutic Potential of 5-HT2C Receptor Agonists for Addictive Disorders
GA Higgins, PJ Fletcher - ACS chemical neuroscience, 2015 - ACS Publications
GA Higgins, PJ Fletcher
ACS chemical neuroscience, 2015•ACS PublicationsThe neurotransmitter 5-hydroxytryptamine (5-HT; serotonin) has long been associated with
the control of a variety of motivated behaviors, including feeding. Much of the evidence
linking 5-HT and feeding behavior was obtained from studies of the effects of the 5-HT
releaser (dex) fenfluramine in laboratory animals and humans. Recently, the selective 5-
HT2C receptor agonist lorcaserin received FDA approval for the treatment of obesity. This
review examines evidence to support the use of selective 5-HT2C receptor agonists as …
the control of a variety of motivated behaviors, including feeding. Much of the evidence
linking 5-HT and feeding behavior was obtained from studies of the effects of the 5-HT
releaser (dex) fenfluramine in laboratory animals and humans. Recently, the selective 5-
HT2C receptor agonist lorcaserin received FDA approval for the treatment of obesity. This
review examines evidence to support the use of selective 5-HT2C receptor agonists as …
The neurotransmitter 5-hydroxytryptamine (5-HT; serotonin) has long been associated with the control of a variety of motivated behaviors, including feeding. Much of the evidence linking 5-HT and feeding behavior was obtained from studies of the effects of the 5-HT releaser (dex)fenfluramine in laboratory animals and humans. Recently, the selective 5-HT2C receptor agonist lorcaserin received FDA approval for the treatment of obesity. This review examines evidence to support the use of selective 5-HT2C receptor agonists as treatments for conditions beyond obesity, including substance abuse (particularly nicotine, psychostimulant, and alcohol dependence), obsessive compulsive, and excessive gambling disorder. Following a brief survey of the early literature supporting a role for 5-HT in modulating food and drug reinforcement, we propose that intrinsic differences between SSRI and serotonin releasers may have underestimated the value of serotonin-based pharmacotherapeutics to treat clinical forms of addictive behavior beyond obesity. We then highlight the critical involvement of the 5-HT2C receptor in mediating the effect of (dex)fenfluramine on feeding and body weight gain and the evidence that 5-HT2C receptor agonists reduce measures of drug reward and impulsivity. A recent report of lorcaserin efficacy in a smoking cessation trial further strengthens the idea that 5-HT2C receptor agonists may have potential as a treatment for addiction. This review was prepared as a contribution to the proceedings of the 11th International Society for Serotonin Research Meeting held in Hermanus, South Africa, July 9–12, 2014.
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