[Carbohydrate metabolism in the bovine carotid artery contracted by the action of potassium chloride].
The concentration of some end products and the activity of some enzymes participating in carbohydrates metabolism were examined in bovine carotid artery contracted by KCl. Oxygen consumption decreased significantly, anaerobic glycolysis and tissue lactic acid content increased during the KCl contraction. The hexosamines and the uronic acids producing ability of the KCl contracted artery were also higher. During contraction the SDH activity decreased in a smaller degree, cytochrome oxydase activity in a much more important degree. On the basis of our results we can conclude that the complete oxydation pathway of carbohydrates degradation, as mucopolysaccharides synthesis and degradation have an important part in the energy metabolism, but anaerobic glycolysis is the most important pathway to produce energy for the KCl contraction of vascular smooth muscle.
D000693:Anaerobiosis / Q000187:drug effects; D000818:Animals; D050260:Carbohydrate Metabolism; D002339:Carotid Arteries / Q000378:metabolism* / Q000502:physiology; D002417:Cattle; D006019:Glycolysis / Q000187:drug effects; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000187:drug effects; D010101:Oxygen Consumption / Q000187:drug effects; D011189:Potassium Chloride / Q000494:pharmacology*
D011189:Potassium Chloride
Sur le métabolisme des hydrates de carbone de l'artère carotide de bovidé contractée sous l'action du chlorure de potassium