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  • Title: Effect of oral ursodeoxycholic acid on bile acids tolerance tests in healthy dogs.
    Author: Abraham LA, Charles JA, Holloway SA.
    Journal: Aust Vet J; 2004 Mar; 82(3):157-60. PubMed ID: 15088982.
    Abstract:
    OBJECTIVE: To determine whether oral administration of ursodeoxycholic acid (UDCA) to healthy dogs alters the results of the bile acids tolerance test. METHODS: UDCA (15 mg/kg once daily) was administered to 16 healthy dogs for 7 days. Health of the dogs was assessed by clinical examination, haematology, serum biochemistry and a bile acids tolerance test. Normal liver structure was confirmed by histopathology at the end of the study. Bile acids tolerance tests were performed before and at the end of the treatment period, with each dog serving as its own control. For the posttreatment bile acids tolerance test, UDCA was administered at the time of feeding. RESULTS: Pretreatment, the fasted serum total bile acid concentrations ranged between 0 and 9 micromol/L. In the majority of dogs, the postprandial total bile acid concentration was greater than the preprandial value, with a range of 0 to 16 micromol/L. The fasted total bile acid concentration was 0 micromol/L in most dogs (93.75%) after treatment with UDCA. Postprandial serum bile acids also remained within the reference range for the majority of dogs (93.75%) after UDCA treatment. A single dog had a postprandial bile acid concentration above the reference range, but the concentration was within the reference range when the assay was repeated the following day without concurrent administration of UDCA. The pre- and postprandial total serum bile acid concentrations were not significantly affected by UDCA treatment. CONCLUSION: The administration of UDCA does not alter the bile acids tolerance test of normal healthy dogs.
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