Effect of training on airways inflammatory response and remodeling in a rat model

Laura Pini, Mauro Novali, Denise Modina, Chiara Torregiani, Mara S. Ludwig, Arsenio Veicsteinas, Fabio Esposito

Research output: Contribution to journalArticlepeer-review

Abstract

Training has many beneficial effects, however few studies report its effects on the lungs. The aim of this study was to assess the effects of acute exercise and exercise training on inflammatory responses and remodeling in central and peripheral airways. Sixteen Sprague-Dawley rats trained for 10weeks, while 14 rats served as controls. Before sacrifice, 8 trained (TR AC) and 8 untrained control (CON AC) rats underwent a single acute exercise bout, while 8 trained (TR) and 6 untrained control (CON) rats were sacrificed without acute exercise. The central and peripheral airways were morphologically examined for inflammatory cells and immunostained for decorin, collagen I, α-smooth muscle actin. No significant differences were found for morphometric analysis in central and peripheral airways, however CON AC showed a significant increase in polymorphonuclear cells in the central airways compared to CON. In contrast, TR AC did not show an inflammatory response different from TR. A similar trend was present in peripheral airways. Training did not induce differences in airways inflammation and remodeling as compared to CON. However, training seemed to limit the inflammatory response induced by acute exercise in the central airways.

Original languageEnglish
Pages (from-to)181-186
Number of pages6
JournalRespiratory Physiology and Neurobiology
Volume179
Issue number2-3
DOIs
Publication statusPublished - Dec 15 2011

Keywords

  • α-SMA
  • Decorin
  • Exercise
  • Inflammatory cells
  • Proteoglycans

ASJC Scopus subject areas

  • Physiology
  • Pulmonary and Respiratory Medicine
  • Neuroscience(all)

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