Bone remodeling is determined by function of two basic cell forms--bone resorbing osteoclasts and bone formation activating osteoblasts. Both cells are under control of a variety of endogenic and environmental factors, which ensure balance between bone resorption and bone formation. This article reviews the neuro-hormonal factors with osteoanabolic (central isoform of serotonin, melatonin, cannabinoids, beta 1 adrenergic system, oxytocin, ACTH and TSH) or osteocatabolic effects (neuropeptide Y, neuromedin U, beta2 adrenergic system). The dual effects of the beta-adrenergic system, serotonin and leptin are also discussed. The goal of studies focused on neuro-skeletal interaction is to synthesize new molecules, which can modify osteo-anabolic or osteo-catabolic pathways.
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