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Related Concept Videos

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...
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu01:29

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...

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Related Experiment Video

Updated: Jun 16, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
06:01

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia

Published on: August 18, 2015

The genetics of ischaemic stroke.

M Matarin1, A Singleton, J Hardy

  • 1Laboratory of Neurogenetics, NIA/NIH, Bethesda, MD, USA.

Journal of Internal Medicine
|February 24, 2010
PubMed
Summary

Genetic factors play a crucial role in ischemic stroke (IS) development and treatment response. This review explores genetic studies, risk testing, and treatment complication analysis for IS.

Area of Science:

  • Neurology
  • Genetics
  • Stroke Medicine

Background:

  • Ischemic stroke (IS) is a leading cause of disability and mortality worldwide.
  • Understanding the genetic underpinnings of IS is crucial for developing targeted therapies.
  • Current research highlights the complex interplay between genetic predisposition and environmental factors in IS.

Purpose of the Study:

  • To review the current understanding of genetic factors influencing ischemic stroke etiology.
  • To explore the genetic basis for variations in treatment response and complications in IS patients.
  • To discuss the implications of genetic testing for IS risk assessment and personalized medicine.

Main Methods:

  • Comprehensive literature review of genetic association studies, including candidate gene, family linkage, and genome-wide association studies (GWAS).

More Related Videos

Performing Permanent Distal Middle Cerebral with Common Carotid Artery Occlusion in Aged Rats to Study Cortical Ischemia with Sustained Disability
09:11

Performing Permanent Distal Middle Cerebral with Common Carotid Artery Occlusion in Aged Rats to Study Cortical Ischemia with Sustained Disability

Published on: February 23, 2016

Induction of Acute Ischemic Stroke in Mice Using the Distal Middle Artery Occlusion Technique
07:34

Induction of Acute Ischemic Stroke in Mice Using the Distal Middle Artery Occlusion Technique

Published on: December 15, 2023

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Last Updated: Jun 16, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
06:01

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia

Published on: August 18, 2015

Performing Permanent Distal Middle Cerebral with Common Carotid Artery Occlusion in Aged Rats to Study Cortical Ischemia with Sustained Disability
09:11

Performing Permanent Distal Middle Cerebral with Common Carotid Artery Occlusion in Aged Rats to Study Cortical Ischemia with Sustained Disability

Published on: February 23, 2016

Induction of Acute Ischemic Stroke in Mice Using the Distal Middle Artery Occlusion Technique
07:34

Induction of Acute Ischemic Stroke in Mice Using the Distal Middle Artery Occlusion Technique

Published on: December 15, 2023

  • Analysis of whole-genome expression studies to identify novel genetic markers.
  • Examination of studies focusing on genetic testing for stroke risk and pharmacogenomics of IS treatments.

    • Main Results:

    • Genetic factors contribute significantly to both the susceptibility to and outcomes of ischemic stroke.
    • Genome-wide studies have identified several susceptibility loci for IS.
    • Genetic variations can influence the risk of treatment complications and response to therapies like thrombolysis.

    Conclusions:

    • Genetics is a key determinant in ischemic stroke, impacting disease risk and therapeutic efficacy.
    • Further research into genetic factors will facilitate personalized prevention and treatment strategies for IS.
    • Genetic testing holds promise for improving stroke risk stratification and optimizing patient management.