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Ischemic Stroke ll: Pathophysiology

Ischemic Stroke ll: Pathophysiology

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...

Transient Ischemic Attack l: Introduction

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...

Ischemic Stroke l: Introduction

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.

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Related Experiment Video

Updated: Jul 4, 2026

Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia

Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia

Published on: May 9, 2013

[Ischemic tolerance (preconditioning) of the brain].

A M Tseĭtlin, A Iu Lubnin, V Zel'man

Anesteziologiia I Reanimatologiia

|June 11, 2008

Summary

Ischemic tolerance, or preconditioning, uses brief ischemia to activate protective mechanisms against future severe episodes. This review explores its potential for brain protection, noting evidence in humans.

Area of Science:

Neuroscience
Physiology
Cell Biology

Context:

Ischemic tolerance, also known as preconditioning, involves brief, sub-lethal ischemic events.
These events trigger endogenous protective mechanisms within cells and tissues.

Purpose:

To review and analyze the existing information on ischemic preconditioning.
To evaluate its potential application for brain protection.

Summary:

The review examines experimental models, temporal dynamics, cross-tolerance, genomic responses, and underlying mechanisms of ischemic preconditioning.
Evidence suggests that ischemic preconditioning occurs in humans.

Impact:

Provides a comprehensive overview of ischemic preconditioning research.

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Remote Limb Ischemic Preconditioning: A Neuroprotective Technique in Rodents

Remote Limb Ischemic Preconditioning: A Neuroprotective Technique in Rodents

Published on: June 2, 2015

Quantification of Neurovascular Protection Following Repetitive Hypoxic Preconditioning and Transient Middle Cerebral Artery Occlusion in Mice

Quantification of Neurovascular Protection Following Repetitive Hypoxic Preconditioning and Transient Middle Cerebral Artery Occlusion in Mice

Published on: May 4, 2015

Related Experiment Videos

Last Updated: Jul 4, 2026

Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia

Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia

Published on: May 9, 2013

Remote Limb Ischemic Preconditioning: A Neuroprotective Technique in Rodents

Remote Limb Ischemic Preconditioning: A Neuroprotective Technique in Rodents

Published on: June 2, 2015

Quantification of Neurovascular Protection Following Repetitive Hypoxic Preconditioning and Transient Middle Cerebral Artery Occlusion in Mice

Quantification of Neurovascular Protection Following Repetitive Hypoxic Preconditioning and Transient Middle Cerebral Artery Occlusion in Mice

Published on: May 4, 2015

Highlights the potential of preconditioning strategies for neuroprotection and mitigating ischemic injury.