Antidepressant, anxiolytic and anorectic effects
of a melanin-concentrating hormone-1 receptor antagonist
by
Borowsky B, Durkin MM, Ogozalek K, Marzabadi MR, DeLeon J, Lagu B, Heurich R,
Lichtblau H, Shaposhnik Z, Daniewska I, Blackburn TP,
Branchek TA, Gerald C, Vaysse PJ, Forray C.
Synaptic Pharmaceutical Corporation, Paramus, New Jersey, USA.
Nat Med. 2002 Aug; 8(8): 825-30. Epub 2002 Jul 15

ABSTRACT

Melanin concentrating hormone (MCH) is an orexigenic hypothalamic neuropeptide, which plays an important role in the complex regulation of energy balance and body weight. Here we show that SNAP-7941, a selective, high-affinity MCH1 receptor (MCH1-R) antagonist, inhibited food intake stimulated by central administration of MCH, reduced consumption of palatable food, and, after chronic administration to rats with diet-induced obesity, resulted in a marked, sustained decrease in body weight. In addition, after mapping the binding sites for [(3)H]SNAP-7941 in rat brain, we evaluated its effects in a series of behavioral models. SNAP-7941 produced effects similar to clinically used antidepressants and anxiolytics in three animal models of depression/anxiety: the rat forced-swim test, rat social interaction and guinea pig maternal-separation vocalization tests. Given these observations, an MCH1-R antagonist may be useful not only in the management of obesity but also as a treatment for depression and/or anxiety.

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SNAP-7941: melanin-concentrating hormone-1 receptor antagonist

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