Neuroprotection after cerebral ischemia.

Shobu Namura1, Hiroaki Ooboshi, Jialing Liu

  • 1Neuroscience Institute, Department of Neurobiology, Morehouse School of Medicine, Atlanta, GA, USA.

Summary

Cerebral ischemia, a leading cause of stroke, is now a treatable condition. Research focuses on understanding stroke mechanisms, identifying therapeutic targets, and optimizing treatment delivery for brain recovery.

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An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
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Overview
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.