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April 30, 2012: Medical Letter on Drugs and Therapeutics
Jill A Ohar, James F Donohue
Beta-2 adrenergic agonists are sympathomimetic agents that stimulate bronchodilation by activation of adenyl cyclase to produce cyclic 3'5' adenosine monophosphate (AMP). Short-acting beta-agonists (SABAs) have a 3- to 6-hour duration of action, and the duration of action of long-acting beta-agonists (LABAs) exceeds 12 hours. Because of their rapid onset of action, SABAs are effective for rescue from symptoms of chronic obstructive pulmonary disease (COPD). LABAs-salmeterol and formoterol-have been shown to significantly improve lung function, health status, and symptom reduction, compared with ipratropium...
June 2010: Seminars in Respiratory and Critical Care Medicine
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