5-HT1B receptor knock out--behavioral consequences
by
Ramboz S, Saudou F, Amara DA,
Belzung C, Segu L, Misslin R, Buhot MC, Hen R.
Center for Neurobiology and Behavior,
Columbia University, New York, NY 10032, USA
Behav Brain Res 1996;73(1-2):305-12

ABSTRACT

Serotonin is a neuromodulator that is involved in a number of mood disorders such as depression, anxiety and impulsive violence. In an attempt to dissect the contribution of individual 5-HT receptor subtypes to behavior, we have generated by homologous recombination, mutant mice lacking the 5-HT1B receptor. These mice did not exhibit any obvious developmental or behavioral defect. However, the hyperlocomotor effect of the 5-HT1A/1B agonist, RU 24969 was completely absent in mutant mice, indicating that this effect is mediated by 5-HT1B receptors. Moreover, when confronted with an intruder, isolated mutant mice attacked the intruder faster and more intensely than wild-type mice, suggesting an involvement of 5-HT1B receptors in the modulation of aggressive behavior. These data might be related to the fact that a class of 5-HT1 agonists, termed serenics, have anti-aggressive properties, and with the findings that certain impulsive aggressive behaviors are associated with deficits in central serotonin.

5-HT2
5-HT3
5-HT1a
5-HT2c
Anpirtoline
Eltoprazine
Zolmitriptan
Knockout mice
5-HT2c/5-HT2b
5-HT1a v 5-HT1b
SSRIs and 5-HT1b
MDMA and 5-HT1a
MDMA and 5-HT1b
5-HT1b and reward
5-HT1b and anxiety
Aggression and serotonin
5-HT-moduline, serotonin and mood
5-HT1b inverse agonists as antidepressants

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