Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association
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J Stroke Cerebrovasc Dis · Jul 2014
Mdivi-1 prevents apoptosis induced by ischemia-reperfusion injury in primary hippocampal cells via inhibition of reactive oxygen species-activated mitochondrial pathway.
Apoptosis is one of the major mechanisms of neuronal injury during ischemic-reperfusion (I/R). Mitochondrial division inhibitor (mdivi-1) is a selective inhibitor of mitochondrial fission protein Drp1. The previous experiments support that mdivi-1 reduce I/R injury in the heart model of rat, but the neuroprotective effect of the mdivi-1 is not yet clearly defined at the cellular levels in brain. ⋯ The redox state, cell apoptosis, and expression of Drp1, Bcl-2, Bax, and cytochrome C proteins were measured. The data showed that administration of mdivi-1 at the doses of 50 μM significantly reduced oxidative stress, attenuated cell apoptosis, upregulated Bcl-2 expression, and downregulated Drp1, Bax, and cytochrome C expression. The results suggested that mdivi-1 protected brain from OGD reperfusion injury, which through suppressing the ROS initiated mitochondrial pathway.
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J Stroke Cerebrovasc Dis · Jul 2014
Rosuvastatin ameliorates early brain injury after subarachnoid hemorrhage via suppression of superoxide formation and nuclear factor-kappa B activation in rats.
Statins, or 3-hydroxy-3-methylglutaryl-coenzyme A reductase inhibitors, have been suggested to possess pleiotropic effects, including antioxidant and anti-inflammatory properties. We investigated the protective effects of pretreatment with rosuvastatin, a relatively hydrophilic statin, on early brain injury (EBI) after a subarachnoid hemorrhage (SAH), using the endovascular perforation SAH model. ⋯ The present study demonstrates that rosuvastatin pretreatment ameliorates EBI after SAH through the attenuation of oxidative stress and NF-κB-mediated inflammation.
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J Stroke Cerebrovasc Dis · May 2014
Randomized Controlled Trial Multicenter Study Comparative StudyA matched comparison of eptifibatide plus rt-PA versus rt-PA alone in acute ischemic stroke.
The Combined Approach to Lysis Utilizing Eptifibatide and Recombinant Tissue Plasminogen Activator (rt-PA) in Acute Ischemic Stroke-Enhanced Regimen (CLEAR-ER) trial found that intravenous rt-PA plus eptifibatide (combination arm) in acute ischemic stroke (AIS) was safe and had a direction of effect that would justify a phase III trial. CLEAR-ER had unanticipated imbalances between treatment groups. We compared the rates of symptomatic intracranial hemorrhage (sICH) and good outcomes for combination therapy patients in the CLEAR-ER trial to a matched cohort of rt-PA patients from the National Institute of Neurological Disorders and Stroke (NINDS) trial. ⋯ The safety and direction of effect of eptifibatide plus rt-PA were confirmed. A phase III trial is needed to determine the efficacy of eptifibatide plus rt-PA for improving long-term outcomes after AIS.
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J Stroke Cerebrovasc Dis · May 2014
Multicenter StudyEfficacy of endovascular treatment for acute cerebral large-vessel occlusion: analysis of nationwide prospective registry.
The aim of this nationwide, prospective registry of acute cerebral large-vessel occlusion was to assess the efficacy of endovascular treatment (EVT) on outcome in the "real-world" settings. ⋯ EVT significantly improved clinical outcomes in IV t-PA-failed and t-PA-ineligible patients with ICA/M1/BA occlusion. These findings support the introduction of EVT for acute proximal artery occlusion.
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The Hunt and Hess grade and World Federation of Neurological Surgeons (WFNS) scale are commonly used to predict mortality after aneurysmal subarachnoid hemorrhage (aSAH). Our objective was to improve the accuracy of mortality prediction compared with the aforementioned scales by creating the "SAH score." ⋯ The SAH score was found to be more accurate in predicting aSAH mortality compared with the Hunt and Hess grade and WFNS scale.