Club cells (Clara cells) are a type of bronchiolar epithelial cell, which secretes the secretoglobin family 1A member 1 (SCGB1A1) protein to protect the bronchiole lining.
What is the function of club cells?
Club cells are nonciliated epithelial cells found mainly in bronchioles as well as basal cells found in large airways. They have been ascribed several protective roles, including airway repair after injury, secretion of antiinflammatory and immunomodulatory proteins, and detoxification.
Do Club cells secrete mucus?
Club cells (CCs) are cubical in shape, and their surface facing the bronchiolar lumen is bulging; they do not have cilia or secrete mucus, which is why they are also known as bronchiolar cells or non-ciliated non-mucous secretory cells of the bronchiolar epithelium [3].
What do Club cells do in the lungs?
One of the main functions of club cells is to protect the bronchiolar epithelium. They do this by secreting a small variety of products, including club cell secretory protein uteroglobin, and a solution similar in composition to pulmonary surfactant.
What cells secretes surfactant?
The pulmonary surfactant is produced by the alveolar type-II (AT-II) cells of the lungs. It is essential for efficient exchange of gases and for maintaining the structural integrity of alveoli. Surfactant is a secretory product, composed of lipids and proteins.
What do Clara cells secrete?
Clara cells are non-ciliated, non-mucous, secretory cells in respiratory epithelium. These epithelial cells secrete several distinctive proteins, including Clara cell 10-kDa secretory protein (CCSP).
Do Clara cells secrete surfactant?
The primary functions of Clara cells are: (1) to provide secretory surfactants (surfactant proteins A, B and D) and other specific proteins (e.g., CCSP) that contribute to the airway epithelial lining fluid; (2) to serve as progenitor cells for ciliated and secretory epithelial cells; and (3) to metabolize xenobiotic …
Do Clara cells produce surfactant?
Which alveolar cell produces surfactant?
alveolar type-II
The pulmonary surfactant is produced by the alveolar type-II (AT-II) cells of the lungs. It is essential for efficient exchange of gases and for maintaining the structural integrity of alveoli. Surfactant is a secretory product, composed of lipids and proteins.
Which cells secrete surfactant in the alveoli?
Alveolar type II cells secrete a lipoprotein material called surfactant, whose primary function is to reduce the surface tension in the alveoli.
What do Clara cells do in the lungs?
Its function is presumably to determine the chemical and physical properties of the lining of small airways, and it could behave as a kind of bronchiolar surfactant, limiting lung collapse. The Clara cells also contain much cytochrome P450 dependent mixed-function oxidases, which presumably play a detoxifying role.
