Related Experiment Video

Updated: Jun 16, 2026

Mucin Agarose Gel Electrophoresis: Western Blotting for High-molecular-weight Glycoproteins
09:24

Mucin Agarose Gel Electrophoresis: Western Blotting for High-molecular-weight Glycoproteins

Published on: June 14, 2016

[The expression of mucins gene in the human nasal polyps and allergic rhinitis]

Chenqi Ji1, Yongqing Guo

  • 1Department of Otolaryngology, Sun Yat-sen Hospital of Xiamen University, Xiamen, 361004, China.

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Journal of Clinical Otorhinolaryngology Head and Neck Surgery
|February 5, 2010
PubMed
Abstract

Insights

Mucin gene expression, specifically MUC5AC and MUC5B, is elevated in nasal polyps and allergic rhinitis (AR), contributing to mucus over-secretion. MUC19 is also highly expressed in AR.

Area of Science:

  • Otorhinolaryngology
  • Molecular Biology
  • Immunology

Context:

  • Nasal polyps and allergic rhinitis (AR) are common inflammatory conditions affecting the upper airway.
  • Mucins play a crucial role in airway surface hydration and protection.
  • Altered mucin expression is implicated in the pathophysiology of sinonasal diseases.

Purpose:

  • To quantify the expression of specific mucin genes (MUC2, MUC5AC, MUC5B, MUC18, MUC19) in human nasal polyps, AR, and normal nasal mucosa.
  • To elucidate the role and clinical significance of these mucin genes in the pathogenesis of nasal polyps and AR.

Summary:

  • Real-time RT-PCR analysis revealed significantly higher expression of MUC5AC and MUC5B in nasal polyps and AR compared to normal mucosa (P<0.05).
  • MUC5AC and MUC5B expression levels were comparable between nasal polyps and AR groups (P>0.05).
  • MUC19 expression was significantly elevated in AR patients compared to both nasal polyps and normal mucosa groups (P<0.05 or P<0.01).
  • No significant differences in MUC2 and MUC18 expression were observed across the groups.

Impact:

  • MUC5AC and MUC5B are key contributors to mucus hypersecretion in nasal polyps and AR.
  • Elevated MUC19 expression in AR suggests its involvement in the allergic inflammatory response.
  • These findings enhance our understanding of mucin's role in sinonasal pathologies and may inform future therapeutic strategies.

More Related Videos

Immunofluorescent Labeling in Nasal Mucosa Tissue Sections of Allergic Rhinitis Rats via Multicolor Immunoassay06:08

Immunofluorescent Labeling in Nasal Mucosa Tissue Sections of Allergic Rhinitis Rats via Multicolor Immunoassay

Published on: September 22, 2023

Absorption of Nasal and Bronchial Fluids: Precision Sampling of the Human Respiratory Mucosa and Laboratory Processing of Samples11:54

Absorption of Nasal and Bronchial Fluids: Precision Sampling of the Human Respiratory Mucosa and Laboratory Processing of Samples

Published on: January 21, 2018

Related Concept Videos

Microbiota of the Respiratory Tract01:29

Microbiota of the Respiratory Tract

The human respiratory tract, comprising the upper and lower segments, serves as a critical interface with the external environment. The upper respiratory tract (URT)—including the nostrils, sinuses, pharynx, and oropharynx—is heavily colonized by microbes, while the lower respiratory tract (LRT), composed of the larynx, trachea, bronchi, and lungs, was long thought to be sterile. However, recent molecular studies have revealed that the lungs are not devoid of microbes but act more like...
Drugs Used in Upper Respiratory Disorders: Overview01:16

Drugs Used in Upper Respiratory Disorders: Overview

Upper respiratory tract disorders, including viral infections and allergic rhinitis, cause significant discomfort and disrupt daily life. Managing these conditions involves a variety of drugs, such as antihistamines, intranasal steroids, decongestants, antitussives, expectorants, and mucolytics. Specific examples of drugs in each category are provided.
Antihistamines (e.g., Benadryl) block histamines from binding. Histamines are chemicals released during an allergic reaction in the body. As a...