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- W1978217872 abstract "Renal ischemia followed by two hours of reperfusion produces a complex form of acute renal failure characterized by a reduction in nephron filtration rate (SNGFR) and moderate proximal tubular damage. We have examined glomerular hemodynamics, SNGFR and histologic changes after renal ischemia and two hours of reperfusion in untreated (I) rats and rats pretreated with the antioxidant, probucol (IP). SNGFR decreased significantly by 47% in I rats. Reduction in SNGFR was primarily the result of a major decrease in the glomerular capillary hydrostatic pressure gradient, delta P, and a decrease in nephron plasma flow (SNPF). The glomerular ultrafiltration coefficient remained equal to control valves. In IP rats SNGFR was improved to values 89% of control rats due to higher values of delta P and SNPF. Histologic evidence of modest damage to cells of the proximal tubule was equal in both untreated and probucol treated ischemic animals. These studies demonstrate that: (a) primary reductions in nephron filtration rate at the glomerulus result from decreases in delta P and nephron plasma flow; b) pretreatment with the antioxidant, probucol, increases nephron plasma flow and SNGFR, and maintains more normal values for delta P; and c) tubular damage was equivalent in I and IP rats in spite of differences in SNGFR." @default.
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- W1978217872 date "1989-06-01" @default.
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- W1978217872 title "Early events in ischemic renal failure in the rat: Effects of antioxidant therapy" @default.
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- W1978217872 doi "https://doi.org/10.1038/ki.1989.123" @default.
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