A methacholine or a histamine test is often used to quantitate bronchial responsiveness, in studies investigating the influence of various inhaled stimuli on the responsiveness and composition of bronchoalveolar lavage (BAL) fluid. Histamine has been shown to evoke an inflammatory cell response in BAL fluid. In order to test the influence of the methacholine test on the cellular composition of BAL fluid, we investigated 14 healthy, nonsmoking volunteers with a methacholine test 24 h before performing a BAL. The results showed no significant changes in the cellular composition of BAL fluid, as compared with control BAL in the same persons.
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Iowa State Univ, Dept Vet Pathol, Ames, IA USAIowa State Univ, Dept Vet Pathol, Ames, IA USA
Hostetter, Shannon J.
Clark, Sandra K.
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Iowa State Univ, Dept Vet Microbiol & Prevent Med, Ames, IA USAIowa State Univ, Dept Vet Pathol, Ames, IA USA
Clark, Sandra K.
Gilbertie, Jessica M.
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Iowa State Univ, Dept Vet Microbiol & Prevent Med, Ames, IA USAIowa State Univ, Dept Vet Pathol, Ames, IA USA
Gilbertie, Jessica M.
Wiechert, Sarah A.
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Iowa State Univ, Dept Vet Microbiol & Prevent Med, Ames, IA USAIowa State Univ, Dept Vet Pathol, Ames, IA USA
Wiechert, Sarah A.
Jones, Doug E.
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Iowa State Univ, Dept Vet Pathol, Ames, IA USAIowa State Univ, Dept Vet Pathol, Ames, IA USA
Jones, Doug E.
Sponseller, Brett A.
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Iowa State Univ, Dept Vet Microbiol & Prevent Med, Ames, IA USA
Iowa State Univ, Dept Vet Clin Sci, Ames, IA USAIowa State Univ, Dept Vet Pathol, Ames, IA USA