What question did this study set out to answer?

To synthesize the physiological, biochemical, and receptor-mediated mechanisms controlling lung surfactant secretion from alveolar type II epithelial cells.

June 1, 1990AJP Lung Cellular and Molecular Physiology

Regulation of lung surfactant secretion

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To synthesize the physiological, biochemical, and receptor-mediated mechanisms controlling lung surfactant secretion from alveolar type II epithelial cells.
Reviewed literature evaluating surfactant phosphatidylcholine and surfactant protein A secretion pathways in pulmonary epithelial type II cells.
Assessed mechanical regulation via lung distension and ventilation alongside receptor-mediated activation involving beta-adrenergic, purinergic, and vasopressin agonists.
Surfactant phosphatidylcholine release occurs via pore formation during lamellar body exocytosis, driven locally by ventilation-induced distension and altered intracellular pH.
Chemical stimulation by beta-adrenergic, purinergic, and vasopressin agonists elevates cytosolic Ca2+ and cyclic AMP, initiating protein kinase cascades that regulate lipid and protein component release.

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Implication

Mechanistic review reveals pathways governing surfactant exocytosis in pulmonary epithelial cells, highlighting key targets for understanding respiratory physiology.

Cite This Study

Chander et al. (1990) studied this question.

synapsesocial.com/papers/6a9735e7fcabbc0bcaaf5ec3 https://doi.org/10.1152/ajplung.1990.258.6.l241

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Implication

Mechanistic review reveals pathways governing surfactant exocytosis in pulmonary epithelial cells, highlighting key targets for understanding respiratory physiology.

Regulation of lung surfactant secretion

Key Points

Discussion

Implication

Cite This Study

Regulation of lung surfactant secretion

Key Points

Discussion

Implication

Cite This Study

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