Nitric Oxide-induced Activation of the Type 1 Ryanodine Receptor Is Critical for Epileptic Seizure-induced Neuronal Cell Death.

ABSTRACT: Status epilepticus (SE) is a life-threatening emergency that can cause neurodegeneration with debilitating neurological disorders. However, the mechanism by which convulsive SE results in neurodegeneration is not fully understood. It has been shown that epileptic seizures produce markedly increased levels of nitric oxide (NO) in the brain, and that NO induces Ca²⁺ release from the endoplasmic reticulum via the type 1 ryanodine receptor (RyR1), which occurs through S-nitrosylation of the intracellular Ca²⁺ release channel. Here, we show that through genetic silencing of NO-induced activation of the RyR1 intracellular Ca²⁺ release channel, neurons were rescued from seizure-dependent cell death. Furthermore, dantrolene, an inhibitor of RyR1, was protective aga

SUBMITTER: Mikami Y 

PROVIDER: S-EPMC5049986 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature