Alveolar Stability
Alveolar Stability - Related Videos
11:26
Harvesting Murine Alveolar Macrophages and Evaluating Cellular Activation Induced by Polyanhydride Nanoparticles
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Cited by 16 •
2012
Herein, we describe protocols for harvesting murine alveolar macrophages, which are resident innate immune cells in the lung, and examining their activation in response to co-culture with polyanhydride nanoparticles.
09:04
Assessing Anti-fungal Activity of Isolated Alveolar Macrophages by Confocal Microscopy
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Cited by 3 •
2014
A method to evaluate the ability of isolated mouse alveolar macrophages to control the growth of phagocytosed Aspergillus spores by confocal microscopy.
07:47
Studying the Role of Alveolar Macrophages in Breast Cancer Metastasis
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Cited by 7 •
2016
Here we describe the model and approach to study functions of pulmonary alveolar macrophages in cancer metastasis. To demonstrate the role of these cells in metastasis, the syngeneic (4T1) model of breast cancer in conjunction with the depletion of alveolar macrophage with clodronate liposomes was used.
01:26
Alveoli and Alveolar Ducts
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2024
The respiratory zone of the human body, which stands in contrast to the conducting zone, comprises the structures that actively participate in the exchange of gases. The initiation of this zone is marked by the terminal bronchioles converging into respiratory bronchioles, the tiniest bronchiole classification. The respiratory bronchioles give way to the alveolar ducts that opens into a congregation of alveoli. Actively involved in gas exchange, alveoli resemble tiny sacs similar to clusters of...
10:49
Efficient Transcriptionally Controlled Plasmid Expression System for Investigation of the Stability of mRNA Transcripts in Primary Alveolar Epithelial Cells
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2020
Here, we present a tool that can be used to study the posttranscriptional modulation of a transcript in primary alveolar epithelial cells by using an inducible expression system coupled to a pipette electroporation technique.
FAQs
Surfactant does more than simply occupy the air-liquid interface. It reduces surface tension there, which helps limit the forces that favor alveolar collapse, especially as airway pressure falls during expiration. This role makes surfactant a central part of the balance required for continued alveolar openness and preservation of a gas-exchanging surface.
Transpulmonary pressure helps oppose the lung’s elastic recoil, providing a distending force that supports alveolar openness. Its importance becomes particularly apparent during expiration, when airway pressure decreases and recoil can favor collapse. The relationship between pressure and recoil therefore helps explain how ventilation can preserve functional alveolar units across the breathing cycle.
Alveolar stability depends on more than one pressure or tissue property. Tissue elasticity contributes elastic recoil, while fluid forces at the air-liquid interface contribute surface tension. Pulmonary surfactant reduces that tension, and airway pressure helps counter opposing forces. The resulting balance determines whether alveoli remain open and capable of supporting efficient gas exchange.
Impaired alveolar stability is clinically relevant in atelectasis and acute respiratory distress syndrome because these conditions involve problems with ventilation and alveolar openness. Understanding the balance among surfactant, pressure, elasticity, and fluid forces helps clinicians interpret how alveolar function is compromised and supports treatment approaches intended to improve ventilation.
Mechanical ventilation strategies are guided by the need to maintain alveolar recruitment, meaning the continued opening of alveolar units, while limiting pressure-related lung injury. Alveolar stability provides the underlying framework for balancing these aims. Excessive concern with opening alveoli without limiting pressure can conflict with the goal of protecting lung tissue during treatment.
Considering alveolar stability helps connect impaired ventilation with the physical forces acting in the lung. Clinicians can use this framework when assessing conditions such as atelectasis and acute respiratory distress syndrome, then relate the findings to surfactant function, airway pressure, elastic recoil, and fluid forces. This supports more informed evaluation and treatment planning.