期刊
CELLULAR AND MOLECULAR LIFE SCIENCES
卷 64, 期 16, 页码 2090-2103出版社
SPRINGER BASEL AG
DOI: 10.1007/s00018-007-7079-x
关键词
valproate; antiepileptic; migraine; bipolar disorder; histone deacetylase; neuroprotection; signal transduction
After more than 40 years of clinical use, the mechanisms of action of valproate in epilepsy, bipolar disorder and migraine are still not fully understood. However, recent findings reviewed here shed new light on the cellular effects of valproate. Beyond the enhancement of gamma-aminobutyric acid-mediated neurotransmission, valproate has been found to affect signalling systems like the Wnt/beta-catenin and ERK pathways and to interfere with inositol and arachidonate metabolism. Nevertheless, the clinical relevance of these effects is not always clear. Valproate treatment also produces marked alterations in the expression of multiple genes, many of which are involved in transcription regulation, cell survival, ion homeostasis, cytoskeletal modifications and signal transduction. These alterations may well be relevant to the therapeutic effects of valproate, and result from its enhancement of activator protein-1 DNA binding and direct inhibition of histone deacetylases, and possibly additional, yet unknown, mechanism(s). Most likely, both immediate biochemical and longer-term genomic influences underlie the effects of valproate in all three indications.
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