powder-puff/asthma

Peripheral airway dysfunction is associated with poor asthma outcome including asthma exacerbation and more symptoms. The peripheral or small airway is anatomically defined by airways with 2 mm diameter or less. Several techniques have been used for evaluating peripheral airways such as spirometry,

BACKGROUND: Asthma is an increasingly serious cause of morbidity and mortality in the United States. There are approximately 12 million asthmatics, and the disease affects both sexes and impacts all racial and ethnic groups. It is now recognized that asthma is a complex disease of varied etiology,

Visit 1 screening will determine eligibility and obtain informed consent. At visit 2, 3 and 4 subjects inhale 1 dose of 45U TI Inhalation Powder. At visit 3 subjects inhale 2 puffs (200mcg) Albuterol prior to dosing. Only asthmatic subjects undergo visit 4 where a methacholine challenge test (MCT)

The investigators will study acute biochemical and hormonal responses over 4 weeks to commonly prescribed moderate and high doses of budesonide one of the most widely prescribed IGCs, and the preferred drug for Medicare and Medicaid. Sixty treatment naïve PM non-asthmatic women will be randomized to