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- W2073449657 abstract "Certain results of in vitro studies raise the possibility that blockade of ATP-sensitive K+ channels by glibenclamide may induce vasoconstriction. Therefore, this substance might decrease portal pressure and hyperkinetic circulation in animals with portal hypertension. Thus, systemic and regional hemodynamics (radioactive microspheres) were measured before and 20 min after a bolus intravenous injection of glibenclamide (20 mg/kg) in conscious rats with portal vein stenosis. Blood pressure decreased significantly from 14.5 +/- 1.5 to 12.2 +/- 1.2 (mean +/- SE). Cardiac index significantly decreased by 24%, portal tributary blood flow by 31%, and hepatic artery blood flow by 35%. Systemic vascular resistance significantly increased by 38%, portal territory vascular resistance and hepatic artery vascular resistance by 61%, each, and renal vascular resistance by 17%. Arterial pressure, heart rate, and renal blood flow were unchanged. Moreover, glibenclamide blunted the vasodilating action of diazoxide (an ATP-sensitive K+ channel opener). These results show that in rats with extrahepatic portal hypertension the blockade of ATP-sensitive K+ channels by glibenclamide reduces portal pressure and hyperkinetic circulation." @default.
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- W2073449657 date "1992-01-01" @default.
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- W2073449657 title "Blockade of ATP-sensitive K+ channels by glibenclamide reduces portal pressure and hyperkinetic circulation in portal hypertensive rats" @default.
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- W2073449657 doi "https://doi.org/10.1016/s0168-8278(05)80118-7" @default.
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