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Isolation of Primary Mouse Lung Endothelial Cells
Published on: November 10, 2021
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Intermittent Hypoxia Activates Duration-Dependent Protective and Injurious Mechanisms in Mouse Lung Endothelial
Peter Wohlrab1, Lourdes Soto-Gonzales1, Thomas Benesch2
1Department of Anaesthesia, General Intensive Care and Pain Management, Medical University of Vienna, Vienna, Austria.
Frontiers in Physiology
|December 22, 2018
Summary
Intermittent hypoxia, common in sleep apnea, initially shows minimal cell damage in lung endothelial cells. However, prolonged exposure triggers inflammation, oxidative stress, and apoptosis, revealing long-term cellular risks.
Area of Science:
- Cellular biology
- Physiology
- Pathology
Background:
- Intermittent hypoxia (IH) is implicated in obstructive sleep apnea and acute respiratory distress syndrome.
- Patient co-morbidities limit in vivo studies of IH, necessitating cell culture models.
- Lung endothelial cells are crucial in responding to altered oxygen, impacting vascular and pulmonary diseases.
Purpose of the Study:
- To investigate the molecular mechanisms of cellular response to intermittent hypoxia in mouse lung endothelial cells.
- To analyze key endothelial function markers under altered oxygen conditions.
- To identify potential therapeutic targets for conditions involving intermittent hypoxia.
Main Methods:
- Exposure of mouse lung endothelial cells to intermittent hypoxia.
- Analysis of cell vitality and health indicators.
- Measurement of endothelial markers, including cell adhesion molecules, fibrinolysis, hemostasis, redox balance, and miRNA regulators.
Main Results:
- Short-term IH (up to 24 hours) had minimal impact on cell vitality and health.
- Early timepoints showed unchanged endothelial marker expression, with some injury indicators downregulated.
- Long-term IH exposure activated signaling pathways leading to cellular inflammation, oxidative stress, and apoptosis.
Conclusions:
- Mouse lung endothelial cells exhibit resilience to short-term intermittent hypoxia.
- Prolonged intermittent hypoxia induces significant cellular stress responses, including inflammation and apoptosis.
- Understanding these long-term effects is crucial for developing therapies for hypoxia-related diseases.
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