Ischemic Hypoxia
Ischemic Hypoxia - 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.
10:30
A Piglet Model of Neonatal Hypoxic-Ischemic Encephalopathy
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Cited by 37 •
2015
Hypoxic-ischemic encephalopathy following perinatal asphyxia can be studied using animal models. We demonstrate the procedures necessary for establishing a piglet model of neonatal hypoxic-ischemic encephalopathy.
06:23
Modeling Hypoxia/Reoxygenation Injury in Proximal Tubular Epithelial Cells
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2025
Here, we describe an in vitro protocol to model hypoxia/reoxygenation damage in the highly metabolic proximal tubular epithelial cells. This model is designed to induce metabolic stress-induced damage, which can be measured through the expression of proximal tubule damage markers and assessment of mitochondrial respiratory function.
06:01
A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
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Cited by 8 •
2015
Thromboembolic stroke models are vital tools for optimizing the recanalization therapy. Here we report a murine thrombotic stroke model based on transient cerebral hypoxic-ischemic (tHI) insult, which triggers thrombosis and infarction, and responds favorably to tissue plasminogen activator (tPA)-mediated fibrinolysis in a therapeutic window similar to those in stroke patients.
07:01
Induction and Testing of Hypoxia in Cell Culture
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Cited by 247 •
2011
Here we propose simple methods to induce hypoxia in cell cultures and simple tests to evaluate the hypoxic status of the cultures.
FAQs
Reduced oxygen availability limits mitochondrial respiration, so cells produce less ATP, the main energy currency used for cellular work. Anaerobic metabolism can provide short-term support when mitochondrial output falls, but it does not fully restore normal energy production. This shift helps explain why prolonged ischemic hypoxia progresses from metabolic adaptation to cellular dysfunction and tissue injury.
Oxygen-sensitive pathways stabilize hypoxia-inducible factors when oxygen delivery is inadequate. These factors alter gene expression, metabolism, and vascular signaling, coordinating responses that can help cells function under stress. Their activity also supports angiogenesis, the formation of new blood vessels, which may improve oxygen delivery during adaptation to poorly perfused tissue.
Ischemic hypoxia restricts more than oxygen delivery. Inadequate perfusion also limits the supply of nutrients and the removal of cellular waste. These combined stresses place tissue under metabolic and transport constraints, making recovery more difficult when low perfusion persists. The result can be cellular dysfunction and, with prolonged exposure, tissue injury and inflammation.
The biological response changes over time. Short-term oxygen limitation can activate anaerobic metabolism, hypoxia-inducible signaling, and vascular responses that support adaptation. If inadequate perfusion continues, these compensatory responses are insufficient to maintain normal tissue function. Prolonged ischemic hypoxia is therefore associated with inflammation, cellular dysfunction, and tissue injury rather than adaptation alone.
Ischemic hypoxia provides a framework for investigating conditions in which poor perfusion contributes to tissue stress, including stroke, myocardial infarction, and peripheral vascular disease. It is also relevant to wound repair, where vascular responses may influence recovery. Studying these settings helps connect altered blood flow with changes in metabolism, signaling, inflammation, and tissue outcome.
Tumors can contain regions with inadequate perfusion, making ischemic hypoxia relevant to how cancer tissue responds to limited oxygen and nutrient delivery. Hypoxia-inducible pathways can modify gene expression, metabolism, and vascular signaling in these regions. This context allows researchers to examine how tumor cells adapt to poor vascular support while surrounding tissue experiences metabolic stress and waste-removal limitations.