Cholinergic and C-fibre mediated mechanisms in the stimulation of mucociliary activity induced by prostaglandins and histamine.

Acta Oto-laryngologica
J DolataU Mercke

Abstract

The involvement of cholinergic and C-fibre mediated mechanisms in the stimulation of mucociliary activity induced by prostaglandins and histamine was investigated in vivo in the rabbit maxillary sinus with a photoelectric technique. The prostaglandins E, (PGE,) and F2(2) alpha (PGF2 alpha) in dose of 0.1 microgram/kg and 10 micrograms/kg respectively stimulated the mucociliary activity in a biphasic fashion, with a small initial response during the first 1-2 min and a later maximum response after 3-4 min. These effects were resistant to atropine and to the SP antagonist (D-Pro2, D-Trp7,9)SP. The small initial response was blocked by pretreatment with high doses of capsaicin (13 mg i.a.), while the maximum response was unaffected. This indicates that the mucociliary responses induced by PGE, and PGF2 alpha involve capsaicin-sensitive C-fibres but that neither acetylcholine nor substance P were responsible. Histamine (50 micrograms/kg) stimulated mucociliary activity in the rabbit maxillary sinus and the effect was abolished by pretreatment with high doses of capsaicin and reduced by the SP antagonist (D-Pro2, D-Trp7,9)SP. This indicates that the histamine-induced stimulation of mucociliary activity involves capsaicin-sensitive C...Continue Reading

References

Jan 1, 1975·Respiration; International Review of Thoracic Diseases·J Iravani, G N Melville
Dec 1, 1983·The Journal of Allergy and Clinical Immunology·A WannerM Sielczak
Jan 1, 1980·Respiration; International Review of Thoracic Diseases·G N MelvilleC Sealy

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Citations

Nov 1, 1995·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·R J SchlosserT V McCaffrey
Oct 1, 1993·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·F R AmbleT Runer

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