ABSTRACT
5-HT as an important neurotransmitter which takes part in the development of many diseases, including bronchial asthma,schizophrenia and bone metabolism as reported in literatures in recent years. Central 5-HT can inhibit sympathetic excitations and promote bone formation through Tph2. Lrp5 can reduce the level of peripheral 5-HT and act on Tph1 to promote bone formation. Peripheral 5-HT blocks the association between transcription factor FOXO1 and CREB and inhibits bone formation. Peripheral 5-HT can also promote IL-6 expression and induce bone reabsorption. LP533401 as a Tph1 inhibitor could effectively reduce the level of peripheral 5-HT and induce bone formation as reported. In this paper, we try to summarize the effect of 5-HT on bone metabolism and its mechanism, and further using 5-HT to regulate bone quantity effectively.