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Distribution and expression of brain-derived neurotrophic factor, nerve growth factor, and neurotrophic factor-3 in refractory epilepsy-associated focal cortical dysplasia.

Abstract
To investigate the expression and distribution of brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), and neurotrophic factor-3 (NT-3) in refractory epilepsy-associated type I focal cortical dysplasia (FCD I) and FCD IIA patients, and to explore their effects on pathogenesis of FCD I and FCD IIA. 19 subjects who received surgery at the Department of Neurosurgery, First Affiliated Hospital, Fujian Medical University, China between June 2010 and May 2012, were enrolled in this study. They were pathologically diagnosed as FCD IIA (n = 7) and FCD I (n = 12) after surgery and were considered as two experimental groups. Temporal lobe samples of 10 subjects who had suffered craniocerebral injury but did not have nervous system disease were collected as a control group. Immunohistochemical methods and Western blot assays were used to detect the expression and distribution of BDNF, NGF, and NT-3 in temporal lobes, and differences in their expression and distribution were compared between experimental and control groups. BDNF expression was slightly higher in the FCD IIA group compared to that in the FCD I group and was significantly greater when compared with the control group. Compared with the control group, NGF and NT-3 expression was higher in the FCD groups. However, no significant difference was observed between the FCD IIA and FCD I group. Abnormal distribution and expression of BDNF, NGF, and NT-3 may play an important role in the mechanism of FCD I and FCD IIA-induced epilepsy.
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PMID: 28737124 [Pubmed - Publisher]

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