Lung Surfactant Production
Lung Surfactant Production - Related Videos
09:34
Extraction and Characterization of Surfactants from Atmospheric Aerosols
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Cited by 26 •
2017
Methods are presented for the targeted extraction of surfactants present in atmospheric aerosols and the determination of their absolute concentrations and surface tension curves in water, including their Critical Micelle Concentration (CMC).
07:20
Lavage-induced Surfactant Depletion in Pigs As a Model of the Acute Respiratory Distress Syndrome (ARDS)
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Cited by 21 •
2016
Repeated pulmonary lavages in anesthetized pigs induce lung injury resembling major aspects of human acute respiratory distress syndrome (ARDS). For this purpose the lungs are repeatedly lavaged with 0.9% saline at 37 °C. The goal of the protocol is a reproducible mitigation of gas exchange and hemodynamics for research in ARDS.
02:58
Evaluating Cytotoxicity and Membrane Integrity in Lung Slices via Lactate Dehydrogenase Assay
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2025
This video demonstrates the lactate dehydrogenase, LDH assay to measure the cytotoxic effect of a test substance and its effect on the membrane integrity in human precision-cut lung slices. The assay provides a quantitative measure of cell death or damage in the sample.
08:58
Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs
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2025
This protocol describes the development of a neonatal piglet model of acute lung injury that models early pathogenic events occurring in the preterm lung, including sub-adequate surfactant quantity, hyperoxia, high-pressure ventilation, and inflammation, to facilitate understanding of molecular triggers of bronchopulmonary dysplasia and enhance therapeutic translation.
09:35
An Experimental System to Study Mechanotransduction in Fetal Lung Cells
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Cited by 7 •
2012
Mechanical forces play a key role in lung development and lung injury. Here, we describe a method to isolate rodent fetal lung type II epithelial cells and fibroblasts and to expose them to mechanical stimulation using an in vitro system.
FAQs
Production follows a defined cellular sequence: Type II alveolar epithelial cells synthesize the lipid and protein components, assemble them into surfactant, package the material into lamellar bodies, and secrete it onto the alveolar air-liquid interface. Tracking these linked stages helps distinguish component formation from storage and delivery to the site where surfactant acts.
Lamellar bodies connect assembly inside Type II alveolar epithelial cells with secretion at the alveolar surface. They represent the packaging stage between component synthesis and release onto the air-liquid interface. Consequently, studies of production must consider storage and secretion, not only the formation of surfactant lipids and proteins.
The functional consequence appears during exhalation. Surfactant phospholipids reduce surface tension at the alveolar air-liquid interface, helping maintain alveolar stability as air leaves the lungs. This matters mechanically because limiting collapse supports more efficient breathing and lowers the work required for ventilation, linking molecular production to whole-organ respiratory performance.
It provides a biological focus for assessing whether the developing lung can establish the material needed for effective alveolar function. Because surfactant must be assembled, packaged, and secreted before it can reduce surface tension, studying production connects fetal lung maturation with cellular events relevant to respiratory function.
Neonatal respiratory distress syndrome is one reason this process is studied in biology. Following the formation, packaging, and release of surfactant helps investigators relate alveolar-cell activity to the material’s ability to reduce surface tension and support stable alveoli. This provides a cellular framework for examining respiratory problems in newborns.
Pulmonary diseases that disrupt alveolar function create a context for examining whether surfactant production remains coordinated across synthesis, lamellar-body packaging, and secretion. Comparing these stages with their effects at the air-liquid interface can connect cellular changes to altered alveolar stability, surface-tension control, and ventilation demands.