Future Advances in COPD Therapy

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Abstract
There is a pressing need for more effective drug treatments for COPD. New bronchodilators include a long-acting anticholinergic tiotropium bromide and a dual β2-dopamine2-receptor agonist. But no treatments prevent the progression of COPD. Mediator antagonists in development include leukotriene B4 antagonists, chemokine receptor antagonists and more potent antioxidants. The inflammation of COPD is resistant to corticosteroids, so new anti-inflammatory drugs need to be developed. These include phosphodiesterase-4 inhibitors, nuclear factor-ĸB inhibitors and p38 MAP kinase inhibitors. Small molecule protease inhibitors, including neutrophil elastase inhibitors and selective matrix metalloproteinase inhibitors are also in development. Future drug targets may be identified by gene array and proteomics.