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Effects of an intense training on functional activity of 5-HT(1B) receptors in human peripheral blood lymphocytes
M Chennaoui1, C Drogou, D Gomez-Merino
1Département de Physiologie Intégrée, IMASSA, BP 73, 91223 Brétigny-sur-Orge, France. mchennaoui@imassa.fr
Abstract:
Serotonin (5-HT) is a neurotransmitter and an immune modulator. At the periphery, the serotonergic system appears to possess a regulatory activity via 5-HT 1B receptors. The present study investigated the effects of a 5-day military course following 3 weeks of combat training on the functional activity of 5-HT 1B/1D receptors in peripheral blood lymphocytes of male soldiers. The results of [35S]GTPgammaS binding assays showed that h5-HT 1B/1D receptors were desensitized after the training program, although serum 5-HT was unchanged. These data suggest the existence of a control on T cells mediated through h5-HT 1B/1D receptors leading cytokine production modulation after a physical training.
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