期刊
JOURNAL OF MOLECULAR NEUROSCIENCE
卷 35, 期 2, 页码 225-234出版社
HUMANA PRESS INC
DOI: 10.1007/s12031-008-9056-8
关键词
valproate; bipolar disorder; epilepsy; PPAR gamma; metabolism
资金
- Intramural NIH HHS [ZIA MH002921-01] Funding Source: Medline
Valproate (Depakote) remains an effective medication for the prevention and treatment of seizures in epilepsy and of mood symptoms in bipolar disorder. Both of these disorders are severe and debilitating, and both warrant further medication options as well as a better understanding of the side effects associated with their current treatments. Although a number of molecular and cellular processes have been found to be altered by valproate, the medication's therapeutic mechanism has not been fully elucidated. In this paper, peroxisome proliferator-activated receptor (PPAR) signaling was examined to determine valproate's effects on this transcriptional regulatory system in neuronal tissue. PPAR signaling has been found to affect a number of biochemical processes, including lipid metabolism, cellular differentiation, insulin sensitivity, and cell survival. When primary neuronal cultures were treated with valproate, a significant decrease in PPAR gamma signaling was observed. This effect was demonstrated through a change in nuclear quantities of PPAR gamma receptor and decreased DNA binding of the receptor. Valproate also caused gene expression changes and a change to the peroxisome biochemistry consistent with a decrease of PPAR gamma signaling. These biochemical changes may have functional consequences for either valproate's therapeutic mechanism or for its neurological side effects and merit further investigation.
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