Ischemic Region
Ischemic Region - Related Videos
08:47
The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia
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Cited by 48 •
2008
The postnatal rat model for hypoxic-ischemic brain injury is a well-established model of human neonatal hypoxic ischemic encephalopathy (HIE). In this article, we describe the model of HIE in post-natal rat pups.
08:35
Demonstration of the Rat Ischemic Skin Wound Model
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Cited by 32 •
2015
The rat, due to its size, availability, and rather docile behavior, has been utilized as a research model for many years. The goal of this protocol is to utilize the rat as an ischemic skin wound healing model to provide valuable insight into the pathophysiology of chronic wounds.
12:00
A Simplified Technique for Producing an Ischemic Wound Model
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Cited by 22 •
2012
We have developed a minimally invasive technique to create a rabbit ischemic ear wound model by dividing the central artery and nerve and the cranial neurovascular bundle. A subcutaneous tunnel then cuts all subcutaneous tissues. This procedure causes minimal skin disruption and can be safely used in diabetic animals.
01:18
Assessing the Angiogenesis Effects of a Test Drug in a Rat Model of Ischemic Stroke
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2025
Begin with a rat subjected to middle cerebral artery occlusion, a surgical procedure that temporarily blocks blood flow to the brain tissue.This induces an ischemic stroke, leading to brain tissue damage.Next, remove the blockage to restore blood flow.Select rats that exhibit neurological deficits to ensure study relevance.Then, administer the test drug to the experimental group while injecting saline into the other group.Repeat the drug and saline administration.The test drug promotes...
15:08
Monitoring Astrocyte Reactivity and Proliferation in Vitro Under Ischemic-Like Conditions
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Cited by 13 •
2017
Ischemic stroke is a complex event in which the specific contribution of astrocytes to the affected brain region exposed to oxygen glucose deprivation (OGD) is difficult to study. This article introduces a methodology to obtain isolated astrocytes and study their reactivity and proliferation under OGD conditions.
FAQs
Within an ischemic region, reduced oxygen and glucose delivery limits ATP production. As ATP falls, cells cannot maintain normal ion gradients, so neuronal function becomes impaired and cellular injury may progress. This metabolic sequence links blood-flow measurements to electrophysiological changes and helps explain how reduced perfusion produces regional dysfunction in neural tissue.
Researchers distinguish the ischemic core from nearby penumbral tissue because the two areas do not carry the same immediate outlook. The core represents more severe injury, whereas the penumbra remains at risk but may be salvageable when circulation is restored. This distinction supports targeted measurement of injury and potential treatment effects.
An area's metabolic demand determines how strongly reduced perfusion affects it. When oxygen and glucose delivery cannot support that demand, ATP production is disrupted and ion gradients fail, producing neuronal dysfunction. Considering this supply-demand relationship helps researchers interpret why neighboring regions can show different degrees of impairment within the same ischemic event.
To study an ischemic region, researchers can map the core and penumbral tissue, then compare those maps with measures of injury, vascular responses, cellular responses, imaging, or electrophysiological data. This integrated workflow does more than locate reduced perfusion: it connects regional blood-flow changes with tissue status and functional consequences.
Mapping is especially useful in stroke research because it provides a framework for evaluating therapies that restore perfusion or protect neurons. Researchers can assess effects on injured tissue, tissue that remains at risk, and functional recovery. The same framework also helps relate experimental findings to vascular and cellular responses in the affected brain.
Imaging and electrophysiological findings should be interpreted alongside the regional ischemic pattern rather than in isolation. A signal from the core may reflect more severe injury, while measurements from penumbral tissue can indicate tissue that remains vulnerable and potentially recoverable. Linking these data to functional recovery helps researchers judge the significance of regional changes.