The pathophysiological mechanisms underlying mucus hypersecretion induced by cold temperatures in cigarette smoke-exposed rats

  • Authors:
    • Min-Chao Li
    • Gang Yang
    • Xiang-Dong Zhou
    • Sergey Tselluyko
    • Juliy M. Perelman
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  • Published online on: October 23, 2013     https://doi.org/10.3892/ijmm.2013.1535
  • Pages: 83-90
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Abstract

In a recent study, we demonstrated that transient receptor potential melastatin 8 (TRPM8), a calcium-permeable cation channel that is activated by cold temperatures, is localized in the bronchial epithelium and is upregulated in subjects with chronic obstructive pulmonary disease, which causes them to be more sensitive to cold air. In the present study, we found that exposure to cold temperatures induced ciliary ultrastructural anomalies and mucus accumulation on the epithelial surface. Male Sprague-Dawley rats were exposed to cold temperatures to determine the effects of cold air on ultrastructural changes in cilia and the airway epithelial surface. The rats were also exposed to cigarette smoke and/or cold temperatures to determine the effects of smoke and cold air on TRPM8 expression and the role of cold air in cigarette smoke-induced mucus hypersecretion. Following real-time RT-PCR and western blot analysis, we observed a high expression of TRPM8 mRNA and protein in the bronchial tissue following cigarette smoke inhalation. As shown by ELISA, concurrent cold air enhanced the levels of mucin 5AC (MUC5AC) protein, as well as those of inflammatory factors [tumor necrosis factor (TNF)-α and interleukin (IL)-8] that were induced by cigarette smoke inhalation to a greater extent than stimulation with separate stimuli (cold air and cigarette smoke separately). The results suggest that cold air stimuli are responsible for the ultrastructural abnormalities of bronchial cilia, which contribute to abnormal mucus clearance. In addition, cold air synergistically amplifies cigarette smoke-induced mucus hypersecretion and the production of inflammatory factors through the elevated expression of the TRPM8 channel that is initiated by cigarette smoke inhalation.
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2014-January
Volume 33 Issue 1

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Li M, Yang G, Zhou X, Tselluyko S and Perelman JM: The pathophysiological mechanisms underlying mucus hypersecretion induced by cold temperatures in cigarette smoke-exposed rats. Int J Mol Med 33: 83-90, 2014
APA
Li, M., Yang, G., Zhou, X., Tselluyko, S., & Perelman, J.M. (2014). The pathophysiological mechanisms underlying mucus hypersecretion induced by cold temperatures in cigarette smoke-exposed rats. International Journal of Molecular Medicine, 33, 83-90. https://doi.org/10.3892/ijmm.2013.1535
MLA
Li, M., Yang, G., Zhou, X., Tselluyko, S., Perelman, J. M."The pathophysiological mechanisms underlying mucus hypersecretion induced by cold temperatures in cigarette smoke-exposed rats". International Journal of Molecular Medicine 33.1 (2014): 83-90.
Chicago
Li, M., Yang, G., Zhou, X., Tselluyko, S., Perelman, J. M."The pathophysiological mechanisms underlying mucus hypersecretion induced by cold temperatures in cigarette smoke-exposed rats". International Journal of Molecular Medicine 33, no. 1 (2014): 83-90. https://doi.org/10.3892/ijmm.2013.1535