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  • Title: Ethanol--its nephrotoxic effect in the rat.
    Author: Van Thiel DH, Williams WD, Gavaler JS, Little JM, Estes LW, Rabin BS.
    Journal: Am J Pathol; 1977 Oct; 89(1):67-83. PubMed ID: 333939.
    Abstract:
    The nephrotoxic effect of ethanol feeding on renal structure and function was evaluated in rats and compared to that in dextrose-fed isocaloric control animals. Alcohol-fed animals had larger kidneys than their controls. Despite this increase in renal mass, the alcohol-fed animals had a 50% reduction in creatinine clearance and a 67% reduction in osmolar clearance compared to their controls. When specific renal constituents were compared, the alcohol-fed animals were found to have twice the renal protein and a 50% increase in renal lipid. Despite these marked structural and functional differences, the light microscopic appearance of the kidneys of the two groups did not appear significantly different. In contrast, the electron microscopic differences were substantial. The renal epithelial cells, particularly of the distal tubules and Henle's loops, were found to show varying degrees of cellular injury and were observed to be sloughing into the lumens. These electron microscopic observations are similar to those obtained in tubular necrosis due to a variety of nephrotoxic agents. We propose, therefore, that chronic alcohol feeding of rats produces significant renal dysfunction and abnormalities of structure such that ethanol should be considered a true nephrotoxin.
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