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  • Title: The effect of taurocholate on canine bile flow, biliary excretion and concentration of ioglycamide.
    Author: Tötterman S, Göthlin J, Santavirta S, Mankinen P, Korpi-Tommola T, Antila H, Lukkari E.
    Journal: Eur J Radiol; 1983 May; 3(2):163-6. PubMed ID: 6873082.
    Abstract:
    The bile acid taurocholate increases the biliary excretion of organic anions, such as sulfobromophthalein (BSP), bilirubin and iopanoic acid. In the present study has been investigated the effect of taurocholate on 1. Canine biliary excretion and concentration of the i.v. contrast medium ioglycamide and 2. Canine bile flow. The experimental model consisted of cholecystectomized, anaesthetized dogs with a fistula, through which the common bile duct could be catheterized and drained. One hour after cannulation, i.v. infusion of ioglycamide at a rate of 4 mumol/min./kg. was started. Two hours after the infusion start a control group received i.v. infusion of saline, while in another a 1.5% sodium taurocholate infusion was started with stepwise increases with 30 min. intervals from 0.4 to 0.8, 1.6 and 3.2 mumol/min./kg. Compared with control, all rates of taurocholate infusion increased bile flow and decreased biliary ioglycamide concentration. Although the bile flow with increasing taurocholate infusion rates was enhanced, the biliary ioglycamide excretion did not increase. The results indicate that ioglycamide and taurocholate are excreted into bile by separate excretion mechanisms. As taurocholate increases the biliary excretion of some other organic anions, it supports the hypothesis that organic anions are excreted into bile by more than two excretion mechanisms, taurocholate affecting only some of them.
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