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  • Title: Toxic effect of streptozotocin on the biliary secretion of nicotinamide-treated rats.
    Author: Carnovale CE, Marinelli RA, Rodriguez Garay EA.
    Journal: Toxicol Lett; 1987 May; 36(3):259-65. PubMed ID: 2954269.
    Abstract:
    The effect of streptozotocin (SZ) on bile flow (BF) and on protein and lipid biliary outputs were studied in rats with bile fistula. SZ was given i.v. as a single dose (50 mg/kg body wt.). Nicotinamide was administrated (500 mg/kg body wt., i.p.) 10 min prior to SZ. Decreases in BF and in biliary outputs of bile acids, proteins and acid phosphatase were observed in SZ-treated rats; conversely, the biliary excretion of cholesterol and phospholipids was increased. Nicotinamide pretreatment prevented the hyperglycemia induced by SZ and also suppressed the SZ-mediated increase of cholesterol and phospholipid biliary outputs, suggesting that they could be related to the diabetic state. The results also demonstrated a direct effect of SZ on BF and on the biliary excretion of bile acids and proteins. Since SZ is used clinically, and in experimental diabetes, the effects produced by this drug on the rat liver should be considered.
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