HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Izumi, H Articles by Karita, K Search for Related Content PubMed PubMed Citation Articles by Izumi, H Articles by Karita, K

Department of Physiology, Tohoku University School of Dentistry, Sendai, Japan.

1. Electrical stimulation of the infra-orbital nerve and the maxillary buccal gingiva caused an increase in ipsilateral lip blood flow in a stimulus intensity-dependent manner in anaesthetized cats. 2. The reflex vasodilator response was resistant to blockade by antimuscarinic (atropine), antiadrenergic (phentolamine and propranolol) and antihistaminergic (tripelennamine) but sensitive to ganglionic blocking agent (hexamethonium). 3. The reflex vasodilator response was unaffected by section of the ipsilateral cervical sympathetic trunk and facial nerve root, but was completely abolished by ipsilateral section of the glossopharyngeal nerve root. 4. The vasodilator response elicited by stimulation of the facial and glosso-pharyngeal nerves was never affected by lesion of the ipsilateral pterygopalatine ganglion. 5. Local anaesthesia or section of the inferior alveolar nerve abolished the vasodilator effects of stimulation of the facial and the glossopharyngeal nerves. 6. These results suggest that there is a somato-autonomic reflex vasodilator system mediated via final neurons that are not cholinergic, and that the parasympathetic vasodilator fibres emerge from the brain stem with the glossopharyngeal nerve and reach the blood vessels via the otic ganglion and the inferior alveolar nerve in the cat mandibular lip.

This article has been cited by other articles:

				H. Ishii, T. Niioka, H. Watanabe, and H. Izumi Inhibitory effects of excess sympathetic activity on parasympathetic vasodilation in the rat masseter muscle Am J Physiol Regulatory Integrative Comp Physiol, August 1, 2007; 293(2): R729 - R736. [Abstract] [Full Text] [PDF]

				H. Ishii, T. Niioka, E. Sudo, and H. Izumi Evidence for parasympathetic vasodilator fibres in the rat masseter muscle J. Physiol., December 1, 2005; 569(2): 617 - 629. [Abstract] [Full Text] [PDF]

				T. Tanaka, S. Kuchiiwa, and H. Izumi Parasympathetic Mediated Pupillary Dilation Elicited by Lingual Nerve Stimulation in Cats Invest. Ophthalmol. Vis. Sci., November 1, 2005; 46(11): 4267 - 4274. [Abstract] [Full Text] [PDF]

				K. Mizuta, S. Kuchiiwa, T. Saito, H. Mayanagi, K. Karita, and H. Izumi Involvement of trigeminal spinal nucleus in parasympathetic reflex vasodilatation in cat lower lip Am J Physiol Regulatory Integrative Comp Physiol, February 1, 2002; 282(2): R492 - R500. [Abstract] [Full Text] [PDF]

				K. Mizuta, K. Karita, and H. Izumi Parasympathetic reflex vasodilatation in rat submandibular gland Am J Physiol Regulatory Integrative Comp Physiol, August 1, 2000; 279(2): R677 - R683. [Abstract] [Full Text] [PDF]

				H. Izumi and I. Nakamura Nifedipine-induced inhibition of parasympathetic-mediated vasodilation in the orofacial areas of the cat Am J Physiol Regulatory Integrative Comp Physiol, July 1, 2000; 279(1): R332 - R339. [Abstract] [Full Text] [PDF]

				H. Izumi Functional roles played by the sympathetic supply to lip blood vessels in the cat Am J Physiol Regulatory Integrative Comp Physiol, September 1, 1999; 277(3): R682 - R689. [Abstract] [Full Text] [PDF]