Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/8813
Citations | ||
Scopus | Web of ScienceĀ® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Heterogeneity of glyceryl trinitrate response in isolated bovine coronoary arteries |
Author: | de la Lande, I. Stafford, I. Horowitz, J. |
Citation: | European Journal of Pharmacology, 1996; 318(1):65-71 |
Publisher: | ELSEVIER SCIENCE BV |
Issue Date: | 1996 |
ISSN: | 0014-2999 1879-0712 |
Abstract: | Factors determining heterogeneity of response to glyceryl trinitrate in coronary microvessels have been extensively documented in recent years, but determinants of heterogeneity between conduit and large resistance vessels are poorly understood. The current study has characterised heterogeneity to glyceryl trinitrate and other vasodilators in bovine isolated proximal (4.5 mm i.d.) and distal (0.5 mm i.d.) segments of left anterior descending artery. Compared with proximal segments, distal segments were less responsive to glyceryl trinitrate and sodium nitroprusside, equi-responsive to S-nitroso-N-acetylpenicillamine, and more responsive to isoprenaline. Heterogeneity to glyceryl trinitrate was unaffected by the presence of the thiols (cysteine or N-acetylcysteine, 100 microM). The results are interpreted as evidence that heterogeneity of vascular responsiveness to glyceryl trinitrate reflects impairment in the small artery of the cellular events which precede activation of the cyclic GMP pathway. An implication is that the impairment is not a consequence of limited thiol availability, and in this respect the cellular mechanism of heterogeneity differs from those proposed for the coronary microvasculature. |
Keywords: | Muscle, Smooth, Vascular Coronary Vessels Animals Cattle Nitroprusside Isoproterenol Nitroglycerin S-Nitroso-N-Acetylpenicillamine 15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid Thromboxane A2 Prostaglandin Endoperoxides, Synthetic Penicillamine Bradykinin Vasoconstrictor Agents Vasodilator Agents Muscle Contraction Muscle Relaxation In Vitro Techniques |
DOI: | 10.1016/S0014-2999(96)00762-5 |
Published version: | http://dx.doi.org/10.1016/s0014-2999(96)00762-5 |
Appears in Collections: | Aurora harvest 4 Medicine publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.