Modern data on molecular mechanisms underlying intracerebral pleutropic action ofgestagens (progesterone, its metabolites, and synthetic gestagens) are reviewed. Properties of classical and membrane-bound progesterone receptors involved in regulation of gene expression, modulation of neurotransmitter systems, and activation of signal cascades in neurons are described along with data of regional distribution of progesterone receptor subtypes in brain, metabolism, functional activity, and mechanisms of action of progesterone metabolites. Special attention is given to analysis of progesterone and metabolite neuroprotective activity in CNS, such as anti-inflammatory and antiapoptotic effects, and participation in neurogenesis regulation. Clinical application of progesterone-based drugs is discussed with reference to the treatment of brain injuries and prospects for extension of indications for their use in neurologic practice.
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