Results 221 to 230 of about 74,961 (259)

Autonomic Innervation of the Nasal Mucosa

ORL, 2010
The nasal passages play a crucial role in the protection and functioning of the lower airways. Consequently the nerve supply of the nasal mucosa is extensive, which is related to an immediate and adequate reaction upon a variety of external and internal stimuli.
A B, Klaassen, Y J, van Megen, W, Kuijpers, P, van den Broek   +3 more
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Effect of snuff on nasal mucosa

American Journal of Otolaryngology, 2005
The inhalation of nasal snuff (powdered tobacco) is a common addiction in the Indian subcontinent. In the western world, there is a resurgence of interest in nasal snuff because it does have the morbidity associated with smoked tobacco. Very few studies have reported the long-term effects of snuff on nasal mucosa. The objective of the present study was
Suja, Sreedharan, Mulki Panduranga, Kamath, Urmila, Khadilkar, Mahesh Chandra, Hegde, Rajeev M, Kumar, Ravikumar Raju, Mudunuri, Satish Chandra, Tripuraneni   +6 more
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Metabolism of Dopamine by the Nasal Mucosa

Journal of Pharmaceutical Sciences, 2006
The nasal route of administration offers several advantages over oral and intravenous administration, including the ability to avoid hepatic first pass metabolism. Dopamine deficiency has been associated with several neurological disorders; it has been shown to have good systemic bioavailability and significant uptake into the CNS following intranasal ...
Nagendra V, Chemuturi, Maureen D, Donovan   +1 more
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Sympathetic Influence on the Nasal Mucosa

Acta Oto-Laryngologica, 1977
The tone of the resistance vessels determines the capillary flow and the tone of the capacitance vessels --the nasal patency. Lower impulse frequencies in the sympathetic nerves affect mainly the capacitance vessels, while higher frequencies affect both types of vessel.
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Interaction of Cocaine With Nasal Mucosa

Archives of Otolaryngology - Head and Neck Surgery, 1991
Canine nasal mucosa was studied in vitro to examine (1) the production of vasoconstriction by cocaine and, (2) the epithelial permeability of cocaine. Cocaine, by itself, failed to induce any contraction of the nasal blood vessels but did enhance contractions resulting from electrical stimulation or addition of norepinephrine.
R T, Jackson, S J, Hersey
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Parasympathetic Influence on the Nasal Mucosa

Acta Oto-Laryngologica, 1977
The effect of graded parasympathetic nerve stimulation on the exchange and capacitance vessels of the nasal mucosa, as well as the secretory response, is reported. Possible postganglionic mediators of the vascular and secretory effects are discussed.
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Endothelin in Human Nasal Mucosa

American Journal of Respiratory Cell and Molecular Biology, 1993
Abstract Endothelin (ET), a potent vasoconstrictor and bronchoconstrictor peptide synthesized by endothelial and epithelial cells, was examined for its potential functions in human inferior turbinate nasal mucosal tissue by four techniques: (1) immunoreactive ET was localized in the mucosa by immunohistochemistry; (2) receptors for ET
J, Mullol, B A, Chowdhury, M V, White, K, Ohkubo, R D, Rieves, J, Baraniuk, J N, Hausfeld, J H, Shelhamer, M A, Kaliner   +8 more
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Mast cell quantitation in nasal polyps, sinus mucosa and nasal turbinate mucosa

The Journal of Laryngology & Otology, 1993
The distribution and abundance of mast cells in nasal polyps, the maxillary sinus mucosa of patients with sinusitis and the turbinate mucosa of allergic rhinitis was microscopically examined using different methods of fixation. In the epithelium of the surface and the ducts of nasal polyps (n = 8), the mean number of mast cells was over 20,000 per mm3 ...
H, Otsuka, K, Ohkubo, H, Seki, M, Ohnishi, T, Fujikura   +4 more
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Eosinophils in nasal polyps and nasal mucosa: An immunohistochemical study

Journal of Allergy and Clinical Immunology, 1993
Immunohistochemical staining was performed at the time of endoscopic sinus surgery (ESS), after 6 months, and after 1 year on nasal polyps and biopsy specimens of the macroscopically unaffected mucosa of the middle and inferior turbinate bones of 46 patients with nasal polyps.
Stoop, A. E., van der Heijden, H. A., Biewenga, J., van der Baan, S.   +3 more
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Drug Metabolism in the Nasal Mucosa

Pharmaceutical Research, 1992
Nasal delivery is a potential alternative for systemic availability of drugs restricted to intravenous administration, such as peptide and protein drugs. Although nasal delivery avoids the hepatic first-pass effect, the enzymatic barrier of the nasal mucosa creates a pseudo-first-pass effect.
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