Hippocampal FGF-2 and BDNF overexpression attenuates epileptogenesis-associated neuroinflammation and reduces spontaneous recurrent seizures

Autor: Osculati Francesco, Mora Graciela, Merigo Flavia, Rodi Donata, Paradiso Beatrice, Zucchini Silvia, Bovolenta Roberta, Berto Elena, Marconi Peggy, Marzola Andrea, Fabene Paolo F, Simonato Michele
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: Journal of Neuroinflammation, Vol 7, Iss 1, p 81 (2010)
Druh dokumentu: article
ISSN: 1742-2094
DOI: 10.1186/1742-2094-7-81
Popis: Abstract Under certain experimental conditions, neurotrophic factors may reduce epileptogenesis. We have previously reported that local, intrahippocampal supplementation of fibroblast growth factor-2 (FGF-2) and brain-derived neurotrophic factor (BDNF) increases neurogenesis, reduces neuronal loss, and reduces the occurrence of spontaneous seizures in a model of damage-associated epilepsy. Here, we asked if these possibly anti-epileptogenic effects might involve anti-inflammatory mechanisms. Thus, we used a Herpes-based vector to supplement FGF-2 and BDNF in rat hippocampus after pilocarpine-induced status epilepticus that established an epileptogenic lesion. This model causes intense neuroinflammation, especially in the phase that precedes the occurrence of spontaneous seizures. The supplementation of FGF-2 and BDNF attenuated various parameters of inflammation, including astrocytosis, microcytosis and IL-1β expression. The effect appeared to be most prominent on IL-1β, whose expression was almost completely prevented. Further studies will be needed to elucidate the molecular mechanism(s) for these effects, and for that on IL-1β in particular. Nonetheless, the concept that neurotrophic factors affect neuroinflammation in vivo may be highly relevant for the understanding of the epileptogenic process.
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