Endothelium-dependent contraction induced by nicotine in isolated canine basilar artery--possible involvement of a thromboxane A2 (TXA2) like substance. 1988

H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
Department of Pharmacology, Faculty of Medicine, Kyoto University, Japan.

The present experiments were undertaken to determine whether the response to nicotine in the isolated canine cerebral artery is endothelium-dependent. Changes in the tension of arterial strips were recorded isometrically. Removal of the endothelium was carried out by gentle rubbing, and confirmed by scanning electron microscopy. Rubbing procedure did not affect the contractile response of the strips to serotonin. Treatment of unrubbed strips with nicotine (10(-4)M) caused a transient contraction. This response was abolished by removal of endothelium and attenuated by hexamethonium (5 x 10(-6)M) and atropine (10(-6)M). The nicotine-induced contraction was attenuated also by aspirin (5 x 10(-5)M), a cyclooxygenase inhibitor, OKY-046 (5 x 10(-5)M), a thromboxane A2 (TXA2) synthetase inhibitor and ONO-3708 (5 x 10(-9)M), a TXA2 antagonist. These results indicate that the nicotine-induced contraction in canine cerebral artery is endothelium-dependent, and suggest that the endothelium-derived contracting factor (EDCF) in the nicotine-induced response is a TXA2-like substance.

UI MeSH Term Description Entries
D008297 Male Males
D008689 Methacrylates Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group. Methacrylate
D008855 Microscopy, Electron, Scanning Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY. Scanning Electron Microscopy,Electron Scanning Microscopy,Electron Microscopies, Scanning,Electron Microscopy, Scanning,Electron Scanning Microscopies,Microscopies, Electron Scanning,Microscopies, Scanning Electron,Microscopy, Electron Scanning,Microscopy, Scanning Electron,Scanning Electron Microscopies,Scanning Microscopies, Electron,Scanning Microscopy, Electron
D009119 Muscle Contraction A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments. Inotropism,Muscular Contraction,Contraction, Muscle,Contraction, Muscular,Contractions, Muscle,Contractions, Muscular,Inotropisms,Muscle Contractions,Muscular Contractions
D009131 Muscle, Smooth, Vascular The nonstriated involuntary muscle tissue of blood vessels. Vascular Smooth Muscle,Muscle, Vascular Smooth,Muscles, Vascular Smooth,Smooth Muscle, Vascular,Smooth Muscles, Vascular,Vascular Smooth Muscles
D009538 Nicotine Nicotine is highly toxic alkaloid. It is the prototypical agonist at nicotinic cholinergic receptors where it dramatically stimulates neurons and ultimately blocks synaptic transmission. Nicotine is also important medically because of its presence in tobacco smoke. Nicotine Bitartrate,Nicotine Tartrate
D010646 Phentolamine A nonselective alpha-adrenergic antagonist. It is used in the treatment of hypertension and hypertensive emergencies, pheochromocytoma, vasospasm of RAYNAUD DISEASE and frostbite, clonidine withdrawal syndrome, impotence, and peripheral vascular disease. Fentolamin,Phentolamine Mesilate,Phentolamine Mesylate,Phentolamine Methanesulfonate,Phentolamine Mono-hydrochloride,Regitine,Regityn,Rogitine,Z-Max,Mesilate, Phentolamine,Mesylate, Phentolamine,Methanesulfonate, Phentolamine,Mono-hydrochloride, Phentolamine,Phentolamine Mono hydrochloride
D010830 Physostigmine A cholinesterase inhibitor that is rapidly absorbed through membranes. It can be applied topically to the conjunctiva. It also can cross the blood-brain barrier and is used when central nervous system effects are desired, as in the treatment of severe anticholinergic toxicity. Eserine
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D004730 Endothelium, Vascular Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components. Capillary Endothelium,Vascular Endothelium,Capillary Endotheliums,Endothelium, Capillary,Endotheliums, Capillary,Endotheliums, Vascular,Vascular Endotheliums

Related Publications

H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
January 1999, Life sciences,
H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
September 1997, British journal of pharmacology,
H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
August 1999, British journal of pharmacology,
H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
February 1992, Prostaglandins, leukotrienes, and essential fatty acids,
H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
August 1996, The American journal of physiology,
H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
July 1991, British journal of pharmacology,
H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
March 1987, The American journal of physiology,
H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
April 1989, British journal of pharmacology,
H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
April 2008, Comparative biochemistry and physiology. Toxicology & pharmacology : CBP,
H Shirahase, and H Usui, and K Kurahashi, and M Fujiwara, and K Fukui
July 1988, Journal of cardiovascular pharmacology,
Copied contents to your clipboard!