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Article Publish Status: FREE
Abstract Title:

Anticonvulsive effect of paeoniflorin on experimental febrile seizures in immature rats: possible application for febrile seizures in children.

Abstract Source:

PLoS One. 2012 ;7(8):e42920. Epub 2012 Aug 16. PMID: 22916181

Abstract Author(s):

Hitomi Hino, Hisaaki Takahashi, Yuka Suzuki, Junya Tanaka, Eiichi Ishii, Mitsumasa Fukuda

Article Affiliation:

Hitomi Hino

Abstract:

Febrile seizures (FS) is the most common convulsive disorder in children, but there have been no clinical and experimental studies of the possible treatment of FS with herbal medicines, which are widely used in Asian countries. Paeoniflorin (PF) is a major bioactive component of Radix Paeoniae alba, and PF-containing herbal medicines have been used for neuromuscular, neuropsychiatric, and neurodegenerative disorders. In this study, we analyzed the anticonvulsive effect of PF and Keishikashakuyaku-to (KS; a PF-containing herbal medicine) for hyperthermia-induced seizures in immature rats as a model of human FS. When immature (P5) male rats were administered PF or KS for 10 days, hyperthermia-induced seizures were significantly suppressed compared to control rats. In cultured hippocampal neurons, PF suppressed glutamate-induced elevation of intracellular Ca(2+) ([Ca(2+)](i)), glutamate receptor-mediated membrane depolarization, and glutamate-induced neuronal death. In addition, PF partially suppressed the elevation in [Ca(2+)](i) induced by activation of the metabotropic glutamate receptor 5 (mGluR5), but not that mediated byα-amino-3-hydroxy-5-methyl-4-isoxazolpropionic acid (AMPA) or N-methyl-D-aspartate (NMDA) receptors. However, PF did not affect production or release of γ-aminobutyric acid (GABA) in hippocampal neurons. These results suggest that PF or PF-containing herbal medicines exert anticonvulsive effects at least in part by preventing mGluR5-dependent [Ca(2+)](i) elevations. Thus, it could be a possible candidate for the treatment of FS in children.

Study Type : Animal Study
Additional Links
Pharmacological Actions : Anticonvulsants : CK(534) : AC(146)

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Sayer Ji
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