Estrogen effects on pilocarpine-induced temporal lobe epilepsy in rats

Estrogen effects on pilocarpine-induced temporal lobe epilepsy in rats

Author Pereira Júnior, Melquíades Autor UNIFESP Google Scholar
Soares, Jose M. Autor UNIFESP Google Scholar
Valente, Sandra G. Autor UNIFESP Google Scholar
Oliveira, Patricia B. Autor UNIFESP Google Scholar
Cavalheiro, Esper A. Autor UNIFESP Google Scholar
Amado, Dbora Autor UNIFESP Google Scholar
Baracat, Edmund Chada Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Abstract Objetive: To evaluate the effects of conjugated equine estrogens (CEE) on the pilocarpine-induced epilepsy in rats.Study design: 40 female rats were divided into: GPC (positive control) presented status epilepticus (SE) induced by pilocarpine; GOC(ovariectomized control) only castrated; GNC (negative control) received only saline solution; GPE received pilocarpine, presented SE, castrated and received 50 mu g/kg CEE treatment; GPV received pilocarpine, castrated and received propylene glycol (vehicle). the animals were monitored by a video system. At the end of observation, the brains removed for later histologic analysis using Neo-Timm and Nissl methods.Results: the GPE presented a reduction in number of seizures compared to GPV. the Neo-Timm analysis showed that GPV had greater sprouting of mossy fibers, with a denser band in the area of the dentate gyrus hilum compared to GPE. On Nissl staining, GPE showed evident neuronal loss in the CA3 area. GPV presented loss in CA1 and dentate gyrus.Conclusion: Estrogen may have a protecting effect on the central nervous system. (C) 2008 Elsevier Ireland Ltd. All rights reserved.
Keywords Experimental models
Language English
Date 2009-02-20
Published in Maturitas. Clare: Elsevier B.V., v. 62, n. 2, p. 190-196, 2009.
ISSN 0378-5122 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 190-196
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000264652800016

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