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The influence of intra-renal infusions of prostaglandin (PG) I2, PGE2 and PGD2 on renin secretion and renal blood flow was investigated in renally denervated, beta-adrenergic blocked, indomethacin treated dogs with unilateral nephrectomy. All three prostaglandins when infused at doses of 10(-8) g/kg/min and 10(-7) g/kg/min resulted in marked renal(More)
The influence of sodium balance and furosemide administration on acute amphotericin B-induced nephrotoxicity has been investigated in the anesthetized dog. In sodium-depleted dogs, amphotericin B (1 mg/kg i.v.) reduced renal blood flow by 32% and glomerular filtration rate by 90% 40 min after the infusion and 32 and 65%, respectively, 140 min after(More)
A major limitation in the use of amphotericin B is its potential to cause nephrotoxicity. In animals, increased dietary sodium reduces renal toxicity. Experience with five patients in whom impaired renal function developed early during amphotericin B therapy is reported. In four of the patients, there was evidence of sodium depletion due to low sodium(More)
The polyene antibiotic, amphotericin B, causes an acute reduction in renal blood flow and glomerular filtration rate. The purpose of this study was to evaluate the hypothesis that the renal vascular response to amphotericin B can be blocked by aminophylline. Toward this end, the effect of aminophylline on the renal response to amphotericin B in(More)
The mesentery of anaesthetized rats was perfused in situ at a constant rate, via the cannulated superior mesenteric artery, with blood drawn from a cannulated carotid artery. Increases in perfusion pressure were produced by peri-arterial electrical stimulation of the mesenteric sympathetic nerves at 3, 6 and 10 Hz before and after the intravenous(More)
Male mongrel dogs were anesthetized with 30 mg/kg of pentobarbital and left gastric arterial blood flow (GBF) was measured with electromagnetic flow probes. Pentagastrin, 1microng/kg i.v., produced an initial brief increase in flow followed by a prolonged secondary increase. Histamine, 1 microng/kg, and prostaglandin E2, 0.5 microng/kg, produced monophasic(More)
Three groups of rats were fed a low-sodium diet. Groups 1 drank water and was treated with cyclosporine, 100 mg kg-1 48 h-1 p.o. for 3 weeks (low-salt-treated group). Group 2 drank 0.15 M saline and was also treated with cyclosporine (high-salt-treated group). Group 3 drank water and was treated with the vehicle (low-salt-vehicle group). Measurements were(More)
The renal vascular effects of prostaglandin E2 (PGE2), 6-keto-PGE1, and PGI2 were investigated in indomethacin-pretreated rats. These prostanoids were infused directly into the left renal artery at rates ranging from 0.01 to 1.0 microgram/min, while renal blood flow and mean arterial blood pressure were constantly monitored. PGE2, 6-keto-PGE1, and PGI2(More)