Evoked Release of Endogenous Norepinephrine in the Canine Saphenous Vein
نویسندگان
چکیده
Toda N, West TC (1967) Interactions of K*. Na and vagal stimulation in the SA node of the rabbit. Am J Physiol 212: 416-423 Trautwein W, Kuffler SW, Edwards C (1956) Changes in membrane characteristics of heart muscle during inhibition. J Gen Physiol 40: 135-145 Wit AL, Cranefield PF (1974) Effect of verapamil on the sinoatrial and atrioventricular nodes of the rabbit and the mechanism by which it arrests reentrant atrioventricular nodal tachycardia. Circ Res 35: 413-425
منابع مشابه
Inhibition by acetylcholine of the norepinephrine release evoked by potassium in canine saphenous veins.
In the dog's saphenous vein acetylcholine inhibits the norepinephrine release caused by nerve stimulation, but not that caused by tyramine. Experiments were performed to determine whether acetylcholine affects the release of norepinephrine evoked by high K+ concentrations. We recorded changes in isometric tension of dog saphenous vein strips. Acetylcholine (5 X 10(-9) to 10(-6) g/ml) caused dos...
متن کاملEvoked release of endogenous norepinephrine in the canine saphenous vein. Inhibition by acetylcholine.
Toda N, West TC (1967) Interactions of K*. Na and vagal stimulation in the SA node of the rabbit. Am J Physiol 212: 416-423 Trautwein W, Kuffler SW, Edwards C (1956) Changes in membrane characteristics of heart muscle during inhibition. J Gen Physiol 40: 135-145 Wit AL, Cranefield PF (1974) Effect of verapamil on the sinoatrial and atrioventricular nodes of the rabbit and the mechanism by which...
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Effects of verapamil, diltiazem and nicardipine on tritium overflow and contraction evoked by transmural nerve stimulation (TNS) were evaluated using canine saphenous vein strips preincubated with [3H]norepinephrine. External Ca2+ was required for both tritium overflow and contraction evoked by TNS. All the Ca antagonists tested significantly increased the spontaneous overflow of tritium in a c...
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The effect of warming on adrenergic neurotransmission was examined in canine cutaneous veins. Isometric tension was recorded from rings of saphenous veins of the dog in organ chambers filled with physiological salt solution. During contractions caused by potassium or prostaglandin F2 alpha, warming from 37 to 41 degrees C caused an augmentation. During contractions caused by stimulation of the ...
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The present study was undertaken to look for the effect of chloroethylclonidine (CEC) on prejunctional alpha-2 autoreceptors of the canine saphenous vein. The effect was tested on tritium overflow evoked by electrical stimulation from tissues preloaded with 0.2 microM 3H-norepinephrine. Yohimbine (3-300 nM) and CEC (1-125 microM) increased and UK-14,304 reduced the overflow of tritium evoked by...
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