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  • Title: Uric acid and phosphorus excretion in dogs with lymphosarcoma.
    Author: Page RL, Leifer CE, Matus RE.
    Journal: Am J Vet Res; 1986 Apr; 47(4):910-2. PubMed ID: 3754406.
    Abstract:
    Serum uric acid and phosphorus concentrations were determined for 27 dogs with multicentric lymphosarcoma before and after chemotherapy. Mean serum uric acid values in dogs before treatment were significantly higher (P less than 0.05) than those of a control group of healthy dogs. Serum uric acid values did not change after treatment. Of the 27 dogs, 13 had 24-hour urine collections to determine endogenous creatinine clearance and quantitation of uric acid and phosphorus excretion before and after treatment for lymphosarcoma. Mean values for 24-hour creatinine clearance before and after treatment were statistically similar in dogs with lymphosarcoma, although the values were lower than those in a normal range. Total urinary phosphorus excretions were increased significantly (P less than 0.01) after treatment without change in fractional excretion. Chemotherapeutic agents used accounted for the significant (P less than 0.05) increase in urine volume after treatment and may have affected the excretion of uric acid and phosphorus. Seemingly, dogs with uncomplicated lymphosarcoma rarely have renal dysfunction or clinically important alterations in uric acid or phosphorus excretion secondary to rapid tumor lysis. However, preexisting renal disease or systemic complications, such as hypercalcemia, may be associated with increased risk of further renal impairment during treatment.
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