Increased expression of TRPV1 in patients with acute or chronic cough after lung cancer surgery

Yong-Fu Zhu, Sheng-Bing Wu, Mei-Qi Zhou, Ming-Ran Xie, Ran Xiong, Shi-Bin Xu, Guang-Wen Xu, Yong-Fu Zhu, Sheng-Bing Wu, Mei-Qi Zhou, Ming-Ran Xie, Ran Xiong, Shi-Bin Xu, Guang-Wen Xu

Abstract

Background: We investigated preoperative and postoperative TRPV1, bradykinin (BK), and prostaglandin e-2 (PGE2) levels in patients who underwent lung cancer surgery and evaluated the correlations between these levels and the development of acute or chronic cough after surgery.

Methods: We evaluated 60 patients with non-small cell lung cancer who underwent lobectomy at our center between August and October 2018. TRPV1, BK, and PGE2 levels were determined by enzyme-linked immunosorbent assay and postoperative cough was assessed using the visual analog scale (VAS).

Results: The postoperative serum TRPV1, BK, and PEG2 levels of the 60 patients were significantly higher than the preoperative levels (P < 0.001). Thirty-five patients (58.3%) were diagnosed with acute cough (VAS ≥ 60 mm), and 25 were diagnosed with non-acute cough (41.7%). Three days after surgery, the serum TRPV1, BK, and PGE2 levels were significantly higher in the acute cough group than in the non-acute cough group (P < 0.001). Twenty-two patients (36.7%) were diagnosed with chronic cough (VAS ≥ 60 mm), and 25 (62.3%) were diagnosed with non-chronic cough. Eight weeks after surgery, the serum TRPV1, BK, and PGE2 levels were significantly higher in the chronic cough group than in the non-chronic cough group (P < 0.05).

Conclusions: The postoperative TRPV1, BK and PGE2 levels were significantly higher than the preoperative levels. The TRPV1 level was also higher in patients with an acute or chronic cough than in patients without. Postoperative acute or chronic cough symptoms can be improved and alleviated by blocking the TRPV1 pathway.

Keywords: Acute cough; TRPV1; chronic cough; lobectomy; lung cancer.

© 2019 The Authors. Thoracic Cancer published by China Lung Oncology Group and John Wiley & Sons Australia, Ltd.

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Source: PubMed

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