Reoxygenation Process
Reoxygenation Process - Related Videos
10:41
A Hypoxia-Reoxygenation Injury Model in Self-Assembling Human Cardioids
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2026
Self-assembling human cardiac organoids (hCOs) are an emerging system for modeling human cardiac development and disease. Here, a methodology for generating and injuring hCOs with hypoxia-reoxygenation and details of expected histological and functional outcomes after injury are provided.
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.
12:02
Human Primary Trophoblast Cell Culture Model to Study the Protective Effects of Melatonin Against Hypoxia/reoxygenation-induced Disruption
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Cited by 35 •
2016
This manuscript presents a unique in vitro model of immunopurified human villous cytotrophoblast cells cultured under hypoxia/reoxygenation. This model is suitable to study the protective effects of promising treatments, such as melatonin, on pregnancy complications associated with increased oxidative stress and altered placental function.
08:56
Oxygen-Glucose Deprivation and Reoxygenation as an In Vitro Ischemia-Reperfusion Injury Model for Studying Blood-Brain Barrier Dysfunction
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Cited by 46 •
2015
Ischemia-Reperfusion (IR) injury is associated with a high rate of morbidity and mortality. The goal of the in vitro model of oxygen-glucose deprivation and reoxygenation (OGD-R) described here is to assess the effects of ischemia reperfusion injury on a variety of cells, particularly in blood-brain barrier (BBB) endothelial cells.
02:34
Impact of Oxygen-Glucose Deprivation and Reoxygenation on Cell-Cell Interactions
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2025
Source: Alluri, H., et.al. Oxygen-Glucose Deprivation and Reoxygenation as an In Vitro Ischemia-Reperfusion Injury Model for Studying Blood-Brain Barrier Dysfunction. J. Vis. Exp. (2015).The video demonstrates the impact of oxygen-glucose deprivation and subsequent reoxygenation on rat brain microvascular endothelial cells (RBMECs) by simulating hypoxic and nutrient-deprived conditions. These conditions result in ATP depletion, increased intracellular calcium, and the generation of reactive...
FAQs
When oxygen returns, mitochondria can again use it as the terminal electron acceptor in respiration. This permits continued oxidative energy production and supports ATP availability for cellular work. The significance is not simply the presence of oxygen, but whether restored oxygen delivery is sufficient to recover energy production without causing additional cellular stress.
A rapid return of oxygen can generate reactive oxygen species, chemically reactive molecules that may disturb cellular components and promote inflammation. This creates a dual response: oxygen supports mitochondrial ATP production, while its sudden restoration may initiate injury. Researchers therefore examine reoxygenation as both a recovery event and a potential source of tissue damage.
The timing and intensity of oxygen restoration can influence whether tissue primarily benefits from renewed respiration or develops injury associated with reoxygenation. These variables affect cellular responses after oxygen deprivation and help explain why oxygen availability must be considered in relation to the duration and severity of the preceding low-oxygen state.
Oxygen deprivation limits the availability of the molecule required for mitochondrial respiration, reducing the conditions needed for ATP production. Reoxygenation can restore that support, but it also introduces the possibility of reactive oxygen species and inflammation. Studying both phases is essential because tissue outcome depends on the transition between them, not only on the deprived state.
A strategy must balance restoring enough oxygen to support mitochondrial respiration and tissue function against the possibility that rapid or excessive restoration will intensify reactive oxygen species formation and inflammation. This balance provides the rationale for examining oxygen therapy in relation to timing, intensity, and cellular effects rather than treating oxygen availability as an isolated variable.
Medical and physiological research examines reoxygenation in ischemia, hypoxia, organ transplantation, and resuscitation. These settings share a concern about tissue that has experienced limited oxygen availability and then receives oxygen again. Understanding the resulting cellular response can help researchers evaluate tissue preservation, recovery of function, and the risk of reperfusion-associated injury.
Investigating how cells respond when oxygen returns helps clinicians and researchers assess whether oxygen delivery supports recovery or contributes to injury. Findings about timing, intensity, ATP production, reactive oxygen species, and inflammation can guide approaches intended to preserve tissue function. This is particularly relevant when oxygen must be restored after ischemia, hypoxia, or resuscitation.