Conducted by the NHLBI's Asthma Clinical Research Network
, the study compared three treatment methods: doubling the dose of inhaled corticosteroids alone, supplementing a low dose of inhaled corticosteroids with a long-acting beta agonist (salmeterol), and supplementing a low dose of inhaled corticosteroids with a long-acting anticholinergic drug (tiotropium bromide).
Boushey HA, Sorkness CA, King TS, et al, for the National Heart, Lung, and Blood Institute's Asthma Clinical Research Network
In a study comparing how asthma sufferers are affected by several common allergens, including those from dogs, cats, cockroaches, and grass, researchers with the Asthma Clinical Research Network
found that exposure to dog allergens caused the greatest disturbances in pulmonary function measurements in asthma patients.