Journal of Applied Physiology Ad Instruments
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 56: 590-595, 1984;
8750-7587/84 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Kikuchi, Y.
Right arrow Articles by Takishima, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Kikuchi, Y.
Right arrow Articles by Takishima, T.

Journal of Applied Physiology, Vol 56, Issue 3 590-595, Copyright © 1984 by American Physiological Society

ARTICLES

Interaction between histamine and vagal stimulation on tracheal smooth muscle in dogs

Y. Kikuchi, H. Okayama, M. Okayama, H. Sasaki and T. Takishima

We examined the interaction between histamine and vagal efferent activity on airway smooth muscle reactivity in 11 anesthetized vagotomized dogs using an isolated closed segment of the intrathoracic trachea filled with Tyrode solution under an isovolumetric condition. Intratracheal pressure change was measured as an index of tracheal smooth muscle tone. The administration into the tracheal segment of histamine (0.1 or 1.0 mg/ml) in six dogs and methacholine chloride (0.001 or 0.01 mg/ml) in the other five dogs elevated intratracheal pressure by about 5 cmH2O. The electrical stimulation of the peripheral ends of both of the cut cervical vagus nerves in the presence of histamine produced significantly greater responses than the additive responses of these two stimuli applied individually (two-way analysis of variance, P less than 0.025). However, the combined effects of vagal stimulation and methacholine were not significantly different from the additive responses of these two stimuli applied individually. The average values of intratracheal pressure elevated by the combined effects of vagal stimulation and histamine were significantly higher than those obtained by the combination of vagal stimulation and methacholine (two-way analysis of variance, P less than 0.01). This suggests that histamine potentiates tracheal smooth muscle reactivity to electrical vagal stimulation, which may contribute to the hyperreactivity observed in patients with asthma.


This article has been cited by other articles:


Home page
 Pharmacol. Rev.Home page
P. J. Barnes, K. F. Chung, and C. P. Page
Inflammatory Mediators of Asthma: An Update
Pharmacol. Rev., December 1, 1998; 50(4): 515 - 596.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online