coronary occlusion/potasiu

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Nicorandil improves ischemic changes in epicardial ECG during short-term coronary occlusion by opening ATP-sensitive potassium channels in pigs.

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The aims of this study were to investigate whether nicorandil (NIC), an ATP-sensitive potassium channel (KATP) opener and nitrate, has antiischemic effects during transient ischemia in pigs, and to investigate whether its effects are due to its KATP-opening action or nitrate action. Myocardial

Progressive transmural electrographic, myocardial potassium ion/sodium ion ratio and ultrastructural changes as a function of time after acute coronary occlusion.

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The progressive transmural electrographic, biochemical and ultrastructural changes as a function of time after acute coronary occlusion were systematically assessed in eight dogs. Transmural plunge electrodes with poles 1 mm apart were placed in the ischemic and nonischemic zones, and coronary

Pharmacological modulation of the ATP sensitive potassium channels during repeated coronary occlusions: no effect on myocardial ischaemia or function.

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BACKGROUND Repeated episodes of myocardial ischaemia may lead to ischaemic preconditioning. This is believed to be mediated by the ATP sensitive potassium channels. OBJECTIVE To examine the effect of pharmacological modulation of the ATP sensitive potassium channels during repeated coronary

The effect of glucose-insulin-potassium on cardiac ultrastructure following acute experimental coronary occlusion.

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The effects of glucose-insulin-potassium (GIK) on cardiac ultrastructure following acute experimental coronary occlusion were studied in dogs. Epicardial ST segment elevations at multiple sites on the anterior surface of the left ventricle 15 minutes after ligation of the left anterior descending

ATP-sensitive potassium channel blocker HMR 1883 reduces mortality and ischemia-associated electrocardiographic changes in pigs with coronary occlusion.

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ATP-sensitive potassium (K(ATP)) channels are activated during myocardial ischemia. The ensuing potassium efflux leads to a shortening of the action potential duration and depolarization of the membrane by accumulation of extracellular potassium favoring the development of reentrant arrhythmias,

Extracellular potassium activity changes in the canine myocardium after acute coronary occlusion and the influence of beta-blockade.

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Extracellular potassium activity before and after coronary occlusion was measured in the canine heart by means of potassium-selective surface electrodes. In the ischaemic myocardium potassium activity rapidly increased from a preocclusion value of 3.2 +/- 0.3 mmol.litre-1 to 10 +/- 0.6 mmol.litre-1

Myocardial potassium loss after acute coronary occlusion in humans.

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Animal studies have established that there is a rapid increase in extracellular potassium concentration in myocardial tissue after the onset of ischemia. To study this phenomenon in humans, coronary sinus plasma potassium concentration was measured in five patients undergoing therapeutic coronary

Potassium and experimental coronary occlusion.

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[Changes in the blood potassium content in acute coronary occlusion].

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Effects of histamine and potassium release agents on ventricular rhythms before and after coronary occlusion.

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Potassium loss, metabolic changes and ventricular arrhythmias following acute experimental coronary occlusion.

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Regional and global myocardial effects of intravenous and sublingual nitroglycerin treatment after experimental acute coronary occlusion.

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The consequences of sublingual and intravenous nitroglycerin treatment after acute coronary occlusion were studied in 18 closed chest dogs. Intravenous (0.1 mg/min) or sublingual (0.4 mg/15 min) nitroglycerin therapy was instituted 1 hour after occlusion and the effects were observed over a period

Loss of preconditioning by attenuated activation of myocardial ATP-sensitive potassium channels in elderly patients undergoing coronary angioplasty.

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BACKGROUND The ischemic preconditioning response among elderly patients is known to be lower than in adult patients. Since mitochondrial ATP-sensitive potassium (K(ATP)) channels exert preconditioning effects, we undertook this study to determine whether this attenuated activation of K(ATP) channels

KATP channel modulation in working rat hearts with coronary occlusion: effects of cromakalim, cicletanine, and glibenclamide.

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OBJECTIVE We studied the effects of ATP-sensitive potassium channel (KATP) modulation on ischemic cardiac performance and reperfusion-induced ventricular fibrillation (VF), and assessed the contribution of KATP to the cardioprotective and anti-arrhythmic effect of the anti-hypertensive drug

[Effect of magnesium on infarct size after coronary occlusion. Animal experiment studies].

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In addition to its antiarrhythmic and antithrombotic effects magnesium is said to have a beneficial effect in patients with acute myocardial infarction. Magnesium can protect myocardial tissue after coronary occlusion and reduces infarct size in experimental models of ischaemia and reperfusion,

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