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Related Concept Videos

Glial Cells01:04

Glial Cells

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.
Ischemic Stroke ll: Pathophysiology01:15

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...
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...

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Related Experiment Video

Updated: Jun 5, 2026

Monitoring Astrocyte Reactivity and Proliferation in Vitro Under Ischemic-Like Conditions
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Astrocytes: Therapeutic targets for stroke.

Jingxiu Li1, Keyuan Gao1, Lili Wang2

  • 1School of Life Science and Technology, Shandong Second Medical University, Weifang, Shandong Province, China.

Neural Regeneration Research
|April 4, 2025
PubMed
Summary

Astrocytes, crucial brain cells, play key roles in stroke recovery. Targeting these cells offers promising new therapies to improve outcomes for stroke patients.

Keywords:
astrocyteischemiaischemic strokeneuroinflammationreactive astrocytestroke

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Neurology

Background:

  • Stroke is a leading global cause of death and disability, resulting in significant neurological impairments.
  • Secondary damage after stroke includes neuroinflammation, oxidative stress, and mitochondrial dysfunction, with limited therapeutic options.
  • Astrocytes, the most abundant glial cells, are increasingly recognized for their critical roles in all stages of ischemic stroke.

Purpose of the Study:

  • To provide a comprehensive review of astrocyte functions in the brain and their specific roles in ischemic stroke.
  • To explore the functional diversity and heterogeneity of astrocytes post-stroke.
  • To summarize current and emerging astrocyte-targeted therapeutic strategies for stroke treatment.

Main Methods:

  • Review of existing literature on astrocyte physiology and their involvement in ischemic stroke.
  • Detailed discussion of cellular and molecular mechanisms underlying astrocyte functions in stroke.
  • Categorization and analysis of current therapeutic approaches targeting astrocytes.

Main Results:

  • Astrocytes are vital for neuronal homeostasis, synaptic activity, and blood-brain barrier integrity.
  • Post-stroke, astrocytes contribute to energy provision, metabolic regulation, and neurotransmitter balance.
  • Emerging roles include mitochondrial recovery, neuroinflammation modulation, and oxidative stress reduction, with identified therapeutic targets.

Conclusions:

  • Astrocytes are critical players in the pathophysiology and recovery from ischemic stroke.
  • Targeting astrocytes presents promising therapeutic avenues, including small molecules, miRNAs, stem cells, and extracellular vesicles.
  • Further research into astrocyte-targeted therapies could lead to improved clinical outcomes for stroke patients.