Summary
FIZZ/RELM is a new gene family named “found in inflammatory zone” (FIZZ) or “resistin-like molecule” (RELM). FIZZ1/RELMα is specifically expressed in lung tissue and associated with pulmonary inflammation. Chronic cigarette smoking up-regulates FIZZ1/RELMα expression in rat lung tissues, the mechanism of which is related to cigarette smoking-induced airway hyperresponsiveness. To investigate the effect of exercise training on chronic cigarette smoking-induced airway hyperresponsiveness and up-regulation of FIZZ1/RELMα, rat chronic cigarette smoking model was established. The rats were treated with regular exercise training and their airway responsiveness was measured. Hematoxylin and eosin (HE) staining, immunohistochemistry and in situ hybridization of lung tissues were performed to detect the expression of FIZZ1/RELMα. Results revealed that proper exercise training decreased airway hyperresponsiveness and pulmonary inflammation in rat chronic cigarette smoking model. Cigarette smoking increased the mRNA and protein levels of FIZZ1/RELMα, which were reversed by the proper exercise. It is concluded that proper exercise training prevents up-regulation of FIZZ1/RELMα induced by cigarette smoking, which may be involved in the mechanism of proper exercise training modulating airway hyperresponsiveness.
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This project was supported by grants from the National Natural Science Foundation of China (No. 81200020, 30770943, 30770648, and 31271490).
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Ma, Wl., Cai, Pc., Xiong, Xz. et al. Exercise training attenuated chronic cigarette smoking-induced up-regulation of FIZZ1/RELMα in lung of rats. J. Huazhong Univ. Sci. Technol. [Med. Sci.] 33, 22–26 (2013). https://doi.org/10.1007/s11596-013-1065-3
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DOI: https://doi.org/10.1007/s11596-013-1065-3