|
|
|
|
|
|
Modulation of k[sub]atp[/sub] channel activity in normotensiveand hypertensive animals
R. B. Strutinskii, A. A. Moibenko
A.A.Bogomoletz Institute of PhysiologyNational Academy of Science of Ukraine, Kiev
Abstract
It was shown that vasodilatory effects of ATP-sensitive potassium channels opener —
flocalin — depend from character of increase of initial vessel tone. Norepinephrine
and angiotensin II partially inhibit effects of flocalin, thus they depressed of KATP
channel activity. The inhibitory effect of angiotensin II increases under arterial
hypertension conditions. It was shown that vasodilatory effects of flocalin significantly
do not distingnish in experiments on normotensive and hypertensive rats under
K+-depolarization conditions. While the vasodilatory effects acetylcholine on hyper-
tensive rats are significantly diminished. These data suggests that flocalin could be a
perspective substance for treatment of hypertension.
References
- Струтинський Р.Б., Мойбенко О.О., Ягупольський Л.М. Дослідження вазомотор-них ефектів нових фторвмісних синтетичних активаторів АТФ-залежних калієвихканалів // Фізіол. журн. — 2000. — 46, № 4 . — С.17-23.
- Adeagbo A.S., Malik K.U. Contribution of K+ channels to arachidonic acid-inducedendotelium-dependent vasodilation in rat isolated perfused mesenteric arteries //J. Pharmacol. Exp. Ther. — 1991. — 258(2). — P.452-458.
- Bhatnagar A., Bolli R. Modulation of KATP channels to protect the ischemic myocardium:clinical implications // Exp. Clin. Cardiol. — 1999. — 4, № 1. — P.20-22.
- Bonev A.D., and M.T. Nelson. Vasoconstrictors inhibit ATP-sensitive K+ channels inarterial smooth muscle through protein kinase C // J. Gen. Physiol. — 1996. —108. — P.315-323.
- Bouhard J.F., E. Dumont, D. Lamontagne. Evidence that prostaglandins I2, E2, and D2may activate ATP-sensitive potassium channels in the isolated rat heart // Cardiovasc.Res. — 1994. — 28. — P.901-905.
- Clement-Chomienne O., Walsh M.P., Cole W.C. Angiotensin II activation of proteinkinase C decreases delayed rectifier K+ current in rabbit vascular myocytes // J. Phy-siol. — 1996. — 495, № 3. — P.689-700.
- Covan C.L., Palacino J.J., Najibi S., Cohen R.A. Potassium channel mediated relaxationto acetylcholine in rabbit arteries // J. Pharmacol. Exp. Ther. — 1993. — 266. —P.1482-1489.
- Gross J.G., Fryer R.M. Sarcolemmal versus mitochondrial ATP-sensitive K+ channelsand myocardial preconditioning // Circulat. Res. — 1999. — 84, №. 9. — P.973-979.
- 9. Hughes A.D., Bolton T.B. Action of angiotensin II, 5-hydroxytryptamine and adenosinetriphosphate on ionic current in single ear artery cell of the rabbit // Brit. J. Phar-macol. — 1995. — 116. — P.2148-2154.
- 10. Kobayashi S., Nakaya H., Takizawa T., Hara Y., Kimura S., Saito T., Masuda Y.Endothelin-1 partially inhibits ATP-sensitive K+ current in guinea pig ventricular cells// J. Cardiovasc. Pharmacol. — 1996. — 27, № 1. — P.12-19.
- Kubo M., J.M. Quayle and N.B. Standen. Angiotensin II inhibition of ATP-sensitiveK+ currents in rat arterial smooth muscle cells through protein kinase C // J. Physiol. —1997. — 503, № 3. — P.489-496.
- Miyoshi Y., and Y. Nakaya. Angiotensin II blocks ATP-sensitive K+ channels in porcinecoronary artery smooth muscle cells // Biochem. Biophys. Res. Commun. — 1991. —181. — P.700-706.
|
|
|
|
|
|
|
© National Academy of Sciences of Ukraine, Bogomoletz Institute of Physiology, 2014-2024.
|
|