Up-regulation of MUC5AC and MUC5B mucin genes in chronic rhinosinusitis

Dae Hoon Kim, Ho Suk Chu, Jin Young Lee, Soon Jae Hwang, Sang Hag Lee, Heung Man Lee

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Backgrounds: Excess mucus production and hypersecretion characterize upper airway diseases. The primary mechanisms leading to mucus hypersecretion in chronic rhinosinus inflammation are not well understood. Mucus hypersecretion is commonly accompanied by goblet cell and submucosal gland cell hyperplasia. It is important to identify which mucin gene messenger RNAs (mRNAs) are expressed in the sinus mucosa. Objectives: To investigate the expression of MUC5AC and MUC5B mRNAs and localization of these proteins in human sinus mucosa and to compare the expression of MUC5AC and MUC5B mRNAs in normal and in chronic sinus mucosa. Design: Twenty chronic maxillary sinusitis mucosa samples and 20 normal maxillary sinus mucosa samples were obtained; RNAs were extracted from sinus mucosa, and semiquantitative reverse transcription-polymerase chain reaction was performed for MUC5AC and MUC5B. Localization of these proteins was sought by using immunohistochemical analysis. Results: The levels of MUC5AC and MUC5B mRNA in chronic rhinosinusitis were significantly increased compared with those in normal sinus mucosa (P = .02). In inflammed sinus mucosa, MUC5AC protein was expressed in the cytoplasm of the goblet cell in the surface epithelium, and MUC5B expression was restricted to mucous cells of the submucosal glands and to the epithelium of sinus mucosa. However, in the normal sinus mucosa, MUC5AC and MUC5B proteins were expressed at low levels in the sinus epithelium and submucosal glands, respectively. Conclusion: These results suggest that up-regulation of MUC5AC and MUC5B, which are major components of respiratory secretion in chronic rhinosinusitis, may play important roles in the pathogenesis of sinus hypersecretion in chronic rhinosinusitis.

Original languageEnglish
Pages (from-to)747-752
Number of pages6
JournalArchives of Otolaryngology - Head and Neck Surgery
Volume130
Issue number6
DOIs
Publication statusPublished - 2004 Jun 1

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Mucins
Mucous Membrane
Up-Regulation
Genes
Mucus
Messenger RNA
Goblet Cells
Epithelium
Proteins
Maxillary Sinusitis
Maxillary Sinus
Reverse Transcription
Hyperplasia
Cytoplasm
RNA
Inflammation
Polymerase Chain Reaction

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Up-regulation of MUC5AC and MUC5B mucin genes in chronic rhinosinusitis. / Kim, Dae Hoon; Chu, Ho Suk; Lee, Jin Young; Hwang, Soon Jae; Lee, Sang Hag; Lee, Heung Man.

In: Archives of Otolaryngology - Head and Neck Surgery, Vol. 130, No. 6, 01.06.2004, p. 747-752.

Research output: Contribution to journalArticle

Kim, Dae Hoon ; Chu, Ho Suk ; Lee, Jin Young ; Hwang, Soon Jae ; Lee, Sang Hag ; Lee, Heung Man. / Up-regulation of MUC5AC and MUC5B mucin genes in chronic rhinosinusitis. In: Archives of Otolaryngology - Head and Neck Surgery. 2004 ; Vol. 130, No. 6. pp. 747-752.
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abstract = "Backgrounds: Excess mucus production and hypersecretion characterize upper airway diseases. The primary mechanisms leading to mucus hypersecretion in chronic rhinosinus inflammation are not well understood. Mucus hypersecretion is commonly accompanied by goblet cell and submucosal gland cell hyperplasia. It is important to identify which mucin gene messenger RNAs (mRNAs) are expressed in the sinus mucosa. Objectives: To investigate the expression of MUC5AC and MUC5B mRNAs and localization of these proteins in human sinus mucosa and to compare the expression of MUC5AC and MUC5B mRNAs in normal and in chronic sinus mucosa. Design: Twenty chronic maxillary sinusitis mucosa samples and 20 normal maxillary sinus mucosa samples were obtained; RNAs were extracted from sinus mucosa, and semiquantitative reverse transcription-polymerase chain reaction was performed for MUC5AC and MUC5B. Localization of these proteins was sought by using immunohistochemical analysis. Results: The levels of MUC5AC and MUC5B mRNA in chronic rhinosinusitis were significantly increased compared with those in normal sinus mucosa (P = .02). In inflammed sinus mucosa, MUC5AC protein was expressed in the cytoplasm of the goblet cell in the surface epithelium, and MUC5B expression was restricted to mucous cells of the submucosal glands and to the epithelium of sinus mucosa. However, in the normal sinus mucosa, MUC5AC and MUC5B proteins were expressed at low levels in the sinus epithelium and submucosal glands, respectively. Conclusion: These results suggest that up-regulation of MUC5AC and MUC5B, which are major components of respiratory secretion in chronic rhinosinusitis, may play important roles in the pathogenesis of sinus hypersecretion in chronic rhinosinusitis.",
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