Expression of p-CREB and activity-dependent miR-132 in temporal lobe epilepsy.

OBJECTIVE The mechanisms underlying the pathogenesis of intractable epilepsy (IE) are still unclear. This study aimed to investigate the role of phosphorylation of Cyclase Response Element Binding Protein (p-CREB)/microRNA-132 (miR-132) signal pathway in the epileptogenesis. METHODS Temporal lobe epilepsy (TLE) was induced in rodents, and the brain tissues were collected. P-CREB expression was detected by Western blot assay and immunochemistry at 6 h, 24 h, 3 d, 7 d, 14 d, 30 d and 60 d after induced status epilepsy (SE), respectively, and in patients with TLE. The expression of miR-132 was detected by RT-PCR. RESULTS The p-CREB and miR-132 were highly expressed in both rats and patients with TLE as compared to controls. CONCLUSIONS The expression of p-CREB and miR-132 increases in epilepsy rats and patients, suggesting a possible pathogenetic role of p-CREB and miR-132 in TLE via modulating the dendritic plasticity.