BACKGROUND AND PURPOSE This review discusses the state of our current knowledge on hemorrhagic transformation (HT) and summarizes key factors to be considered when comparing risk associated with various approaches to revascularization. SUMMARY OF REVIEW HT is a common and natural consequence of infarction, likely related to matrix metalloproteinases and free radical pathways disrupting permea...

The role of aquaporins (AQPs) in the formation of cerebral edema after stroke: Stroke can be classified into either ischemic or hemorrhagic based on their etiological mechanism. Cerebral edema development often accompanies both ischemic infarct and intracerebral hemorrhage (ICH). Cerebral edema is differentiated according to their underlying mechanism and time course: cytotoxic and vasogenic. C...

An angiogenesis factor, angiopoietin-1 (Ang1), is associated with the blood-brain barrier (BBB) disruption after focal cerebral ischemia. However, whether hemorrhagic transformation and cerebral edema after tissue plasminogen activator (tPA) treatment are related to the decrease in Ang1 expression in the BBB remains unknown. We hypothesized that administering Ang1 might attenuate hemorrhagic tr...

Ischemic and hemorrhagic strokes are associated with severe functional disability and high mortality. Except for recombinant tissue plasminogen activator, therapies targeting the underlying pathophysiology of central nervous system (CNS) ischemia and hemorrhage are strikingly lacking. Sur1-regulated channels play essential roles in necrotic cell death and cerebral edema following ischemic insul...

  Background: Thrombolytic therapy is the only approved treatment for acute cerebral ischemia. The hemorrhagic transformation is the greatest complication of this treatment, which may occur after recanalization of occluded artery. The aim of this study was to determine factors associated with clinical improvement and worsening in patients with acute ischemic stroke treated with intravenous th...

Ischemic preconditioning (IPC), a strategy used to attenuate ischemia-reperfusion injury, consists of brief ischemic periods, each followed by reperfusion, prior to a sustained ischemic insult. The purpose of the present study was to evaluate the local and systemic anti-inflammatory effects of hind limb IPC in male Wistar rat (200-250 g) models of acute inflammation. IPC was induced with right ...

myocardial performance, utilizing the isolated canine heart preparation, was studied in two groups: normal control dogs and those subjected to hemorrhagic shock. a marked deterioration in myocardial functional capacity was observed in the shock group. from this study, myocardial incapacity resulting from the period of acute hypotension is felt to be a contributing factor in the death of animals...