A Pharmaceutical Researcher Is Studying a New Drug Being Developed

A pharmaceutical researcher is studying a new drug being developed for treatment of asthma that works by reversing irritant-induced bronchoconstriction.  Laboratory guinea pigs are divided into 2 groups: a postvagotomy (complete transection of the vagus nerve) group and a normal study group.  Both groups are exposed to irritants without receiving the study medication, and changes in bronchial diameters are recorded.  Subsequently, both groups are exposed again to the irritants but are also given the study drug. The study drug is most likely similar to which of the following medications?

A) Albuterol
B) Flunisolide
C) Ipratropium
D) Nifedipine
E) Theophylline
F) Zileuton

Correct Answer:

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