Upper respiratory tract secretions: pathophysiology
Mygind, N.; Brofeldt, S.; Ostberg, B.; Cerkez, V.; Tos, M.; Marriott, C.
European Journal of Respiratory Diseases. Suppl 153: 26-33
1987
ISSN/ISBN: 0106-4347 PMID: 3322866 Document Number: 290600
Nasal fluid is a heterogeneous substance. It consists largely of a secretory product derived from the 100,000 small seromucous glands. The anterior part of the nose has a relatively high secretory capacity, but this does not seem to be caused by secretion from the 200 anterior serous glands. Compared to sputum, nasal secretion has a lower viscosity, but comparable spinability; it has a lower dry weight, and content of sulphate, sugars and most proteins, but a comparable level of albumin. Watery rhinorrhoea is mainly reflex-mediated. Watery, but not purulent nasal discharge can be reduced by the cholinoceptor antagonist, ipratropium, administered in a dose which matches the degree of the symptoms. It seems likely that the nose, in some respects, can serve as a model for the analysis of airway secretions, but a comparative study of nasal and of bronchial secretions sampled in an identical way is warranted.