title: Alveolar epithelial beta2-adrenergic receptors.
abstract: beta(2)-adrenergic receptors are present throughout the lung, including the alveolar airspace, where they play an important role for regulation of the active Na(+) transport needed for clearance of excess fluid out of alveolar airspace. beta(2)-adrenergic receptor signaling is required for up-regulation of alveolar epithelial active ion transport in the setting of excess alveolar edema. The positive, protective effects of beta(2)-adrenergic receptor signaling on alveolar active Na(+) transport in normal and injured lungs provide substantial support for the use of beta-adrenergic agonists to accelerate alveolar fluid clearance in patients with cardiogenic and noncardiogenic pulmonary edema. In this review, we summarize the role of beta(2)-adrenergic receptors in the alveolar epithelium with emphasis on their role in the regulation of alveolar active Na(+) transport in normal and injured lungs.
authors: Northwestern University Feinberg School of Medicine, Pulmonary and Critical Care Medicine, 240 E. Huron Street, McGaw M-300, Chicago, IL 60611, USA. g-mutlu@northwestern.edu
authors: Gökhan M
authors: GM
authors: Mutlu
authors: Phillip
authors: P
authors: Factor
mesh_terms: D058666:Adrenergic beta-2 Receptor Agonists; D000318:Adrenergic beta-Agonists / Q000627:therapeutic use; D000818:Animals; D006801:Humans; D011487:Protein Conformation; D011650:Pulmonary Alveoli / Q000378:metabolism*; D011654:Pulmonary Edema / Q000188:drug therapy; D018343:Receptors, Adrenergic, beta-2 / Q000737:chemistry / Q000378:metabolism*; D015398:Signal Transduction
chemical_list: D058666:Adrenergic beta-2 Receptor Agonists; D000318:Adrenergic beta-Agonists; D018343:Receptors, Adrenergic, beta-2
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