Abstract:Background: Airway obstruction in asthma is driven by airway smooth muscle (ASM) contraction. Airway obstruction can be induced extrinsically by direct stimulation of ASM with contractile agonists or by indirect provocation with antigens, while the airway baseline tone is dependent on intrinsic obstruction. The ASM phenotypes involved in all types of obstruction seem to be related.Methods: To determination the associations of the ASM phenotypes involved in different types of airway obstruction, guinea pigs wer… Show more
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