Journal of Otolaryngology and Ophthalmology of Shandong University ›› 2024, Vol. 38 ›› Issue (6): 55-60.doi: 10.6040/j.issn.1673-3770.0.2023.343

• Research Progress • Previous Articles    

Pepsin and laryngopharyngeal reflux disease: from pathogenic mechanisms to potential risk factors for pharyngeal and laryngeal squamous cell carcinoma

ZHOU Shitong1,2, YANG Yanyan1, YANG Yucheng2, FANG Hongyan1   

  1. 1. Department of Otorhinolaryngology & Head and Neck Surgery, Chongqing General Hospital, Chongqing 401147, China2. Department of Otorhinolaryngology & Head and Neck Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
  • Published:2024-12-13

Abstract: Laryngopharyngeal reflux disease(LPRD)is an inflammatory disease of the tissues of the upper aerodigestive tract caused by the direct or indirect action of reflux of gastroduodenal contents, with pepsin as the main causative agent. Numerous studies have shown a strong association between laryngeal reflux and squamous cell carcinoma of the pharynx and larynx. Nonetheless, the ongoing debate as to whether laryngeal reflux is a risk factor for laryngeal squamous cell carcinoma remains inconclusive. Pepsin, the main pathogenic factor of LPRD, has been shown to play a crucial role in the oncogenesis of squamous cell carcinoma of the pharynx and larynx. Possible mechanisms include damage to the epithelium of the pharyngeal and laryngeal mucosa, disruption of the epithelial defense barrier, induction of inflammation, and alterations in genes and miRNA. This article provides a comprehensive review of the role and mechanism of LPRD, with a special focus on pepsin, in terms of pathogenic mechanisms and potential risk factors for pharyngeal and laryngeal squamous cell carcinoma, with the aim of facilitating the explanation of oncogenesis and inspiring innovative therapeutic approaches in this disease.

Key words: Laryngopharyngeal reflux, Pepsin, Squamous cell carcinoma, Mucosal injury, Pathogenesis

CLC Number: 

  • R767.6
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