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Related Concept Videos

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...
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.
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...
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
Regulation of Stroke Volume01:27

Regulation of Stroke Volume

The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...

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Related Experiment Video

Updated: Jun 24, 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

Genetics of stroke.

Myriam Fornage1

  • 1Brown Foundation Institute of Molecular Medicine, 1825 Pressler Street, Houston, TX 77030, USA. Myriam.Fornage@uth.tmc.edu

Current Atherosclerosis Reports
|April 14, 2009
PubMed
Summary
This summary is machine-generated.

Genomic research is advancing our understanding of stroke, a leading cause of death and disability. Exploring DNA variations offers new therapeutic targets for stroke prevention and treatment.

Related Experiment Videos

Last Updated: Jun 24, 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

Area of Science:

  • Genomics
  • Neuroscience
  • Medical Research

Background:

  • Stroke is a major cause of death and long-term disability globally.
  • The genetic and molecular underpinnings of stroke are not fully understood.
  • Advances in DNA sequencing offer potential for novel therapeutic strategies.

Purpose of the Study:

  • To review the current applications of genomic sciences in stroke research.
  • To discuss future prospects of genomics in understanding stroke pathophysiology.
  • To highlight the potential for developing new stroke therapies.

Main Methods:

  • Review of recent literature on stroke genomics.
  • Analysis of DNA sequence variation patterns in human populations.
  • Exploration of emerging genomic variability sources beyond single nucleotide polymorphisms.

Main Results:

  • Genomic studies are beginning to reveal insights into stroke predisposition.
  • Identification of DNA variations can inform disease pathophysiology.
  • New therapeutic avenues are emerging from genetic research.

Conclusions:

  • Genomic sciences are crucial for advancing stroke research.
  • Integrative approaches considering diverse genomic variability are needed.
  • Future research will likely transform stroke treatment and prevention.