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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...
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Hypoxia

Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
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There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Cytotoxic Edema: Pathophysiology01:21

Cytotoxic Edema: Pathophysiology

Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous supply...
Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
Hepatic Encephalopathy01:29

Hepatic Encephalopathy

DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...

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Related Experiment Video

Updated: May 9, 2026

The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia
08:47

The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia

Published on: November 19, 2008

Inflammatory responses in hypoxic ischemic encephalopathy.

Fudong Liu1, Louise D McCullough

  • 1Department of Neuroscience, University of Connecticut Health Center, Farmington, Connecticut, USA. fliu@uchc.edu

Acta Pharmacologica Sinica
|July 30, 2013
PubMed
Summary
This summary is machine-generated.

Neonatal hypoxic ischemic encephalopathy (HIE) involves unique inflammation due to immature immune systems. This review details HIE

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Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice
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Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice

Published on: June 11, 2020

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Last Updated: May 9, 2026

The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia
08:47

The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia

Published on: November 19, 2008

Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice
09:29

Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice

Published on: June 11, 2020

Area of Science:

  • Neuroscience
  • Immunology
  • Neonatal Medicine

Background:

  • Neonatal hypoxic-ischemic encephalopathy (HIE) is a severe condition causing brain injury.
  • Inflammation is a key mediator of brain damage in HIE.
  • Neonatal immune system immaturity creates a unique inflammatory response compared to adults.

Purpose of the Study:

  • To review current knowledge on inflammatory responses in neonatal HIE.
  • To discuss systemic and local inflammation in acute and subacute HIE stages.
  • To compare neonatal and adult inflammatory responses to cerebral ischemia.

Main Methods:

  • Literature review of studies on HIE inflammation.
  • Analysis of immune cell involvement.
  • Examination of molecular mediators like cytokines and chemokines.

Main Results:

  • HIE exhibits distinct inflammatory characteristics due to neonatal immune immaturity.
  • Key inflammatory components include specific immune cells, adhesion molecules, cytokines, and chemokines.
  • Oxidative stress significantly contributes to HIE-related inflammation.

Conclusions:

  • Understanding HIE-specific inflammation is crucial for developing targeted therapies.
  • Differences in inflammatory responses between neonates and adults highlight the need for age-specific treatment strategies.
  • Further research into neonatal immune pathways in HIE is warranted.