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Targeting the airway smooth muscle for asthma treatment.

Abstract
Asthma is a complex respiratory disease whose incidence has increased worldwide in the last decade. Currently there is no cure for asthma. Although bronchodilator and anti-inflammatory medications are effective medicines in some asthmatic patients, it is clear that an unmet therapeutic need persists for a subpopulation of individuals with severe asthma. This chronic lung disease is characterized by airflow limitation, lung inflammation, and remodeling that includes increased airway smooth muscle (ASM) mass. In addition to its contractile properties, the ASM also contributes to the inflammatory process by producing active mediators, which modify the extracellular matrix composition and interact with inflammatory cells. These undesirable functions make interventions aimed at reducing ASM abundance an attractive strategy for novel asthma therapies. The following three mechanisms could limit the accumulation of smooth muscle: decreased cell proliferation, augmented cell apoptosis, and reduced cell migration into the smooth muscle layer. Inhibitors of the mevalonate pathway or statins hold promise for asthma treatment, because they exhibit anti-inflammatory, antimigratory, and antiproliferative effects in preclinical and clinical studies, and they can target the smooth muscle. This review will discuss current knowledge of ASM biology and identify gaps in the field to stimulate future investigations of the cellular mechanisms that control ASM overabundance in asthma. Targeting ASM has the potential to be an innovative venue of treatment for patients with asthma.
AuthorsBlanca Camoretti-Mercado
JournalTranslational research : the journal of laboratory and clinical medicine (Transl Res) Vol. 154 Issue 4 Pg. 165-74 (Oct 2009) ISSN: 1931-5244 [Print] United States
PMID19766960 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't, Review)
Chemical References
  • Anti-Asthmatic Agents
  • Hydroxymethylglutaryl-CoA Reductase Inhibitors
Topics
  • Airway Obstruction (physiopathology)
  • Anti-Asthmatic Agents (therapeutic use)
  • Asthma (drug therapy, pathology, physiopathology, therapy)
  • Cell Culture Techniques (methods)
  • Humans
  • Hydroxymethylglutaryl-CoA Reductase Inhibitors (therapeutic use)
  • Muscle, Smooth (pathology, physiopathology)
  • Randomized Controlled Trials as Topic

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