Kelly HW, McWilliams BC, Murphy S. Aerosolized beta 2-agonists do not induce bronchial hyperreactivity in healthy adults.
Ann Pharmacother 1995;
29:848-51. [PMID:
8547730 DOI:
10.1177/106002809502900903]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVE
To determine whether regular administration of beta 2-agonists could induce bronchial hyperreactivity in nonasthmatic volunteers.
DESIGN
A prospective, randomized, double-blind, placebo-controlled, crossover clinical trial of 2 weeks therapy with a 2-week washout period between each treatment period. Treatments were albuterol or matching placebo as 2 inhalations 4 times daily.
SUBJECTS
Ten healthy, nonsmoking women 27-37 years old.
SETTING
General clinical research center of a tertiary care university hospital.
MAIN OUTCOME MEASURES
Baseline spirometry and methacholine bronchoprovocation studies were performed immediately prior to, 12 hours following, and 1 and 2 weeks following each treatment period.
RESULTS
No change was detected in either baseline spirometry or methacholine responsiveness.
CONCLUSIONS
This suggests that if beta 2-agonists induce a rebound bronchial hyperreactivity, it is not the result of the production of tolerance or a direct effect on bronchial smooth muscle.
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