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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Mucin mRNA expression in normal and vasomotor inferior turbinates.

Mucins are the major glycoprotein component of respiratory tract secretions. Little is known about their expression in the upper respiratory tract. In order to define this expression, in situ hybridization was performed on 19 normal and 4 vasomotor rhinitis (VMR) inferior turbinates to identify mucin mRNA. MUC1, MUC2, MUC4, MUC5AC, MUC5B, and MUC7 were expressed in both the normal and VMR turbinates. MUC4 and MUC5AC were the most highly expressed mucins. MUC1, MUC2, MUC4, and MUC5AC were expressed mainly by the epithelial border, whereas MUC5B and MUC7 were expressed by the submucosal glands. MUC1 and MUC4 exhibited a diffuse expression by multiple cell types along the mucosal border, whereas MUC2 and MUC5AC expression appeared to be limited to a subpopulation of epithelial cells, most likely goblet cells. Although MUC1, MUC4, and MUC5AC showed sporadic submucosal glandular expression, MUC5B and MUC7 appeared to be the predominant submucosal gland mucins in the inferior turbinates. MUC3 and MUC6 expression, which have been found primarily in the gastric mucosa, were not seen in any of the inferior turbinate samples examined. The only difference seen between normal and VMR turbinates was a slight decrease in MUC1 expression in the VMR group. The variety of mucins expressed and the diversity of their expression patterns may have significance in terms of the rheologic and particle clearance properties of nasal secretions. Understanding the expression patterns in normal turbinates will serve as the foundation for further study of these mucins in disease states.[1]

References

  1. Mucin mRNA expression in normal and vasomotor inferior turbinates. Aust, M.R., Madsen, C.S., Jennings, A., Kasperbauer, J.L., Gendler, S.J. American journal of rhinology. (1997) [Pubmed]
 
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