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  • Title: Urinary excretion patterns of pseudouridine and beta-aminoisobutyric acid in patients with tumours of the urinary bladder.
    Author: Kvist E, Sjølin KE, Iversen J, Nyholm K.
    Journal: Scand J Urol Nephrol; 1993; 27(1):45-53. PubMed ID: 8493467.
    Abstract:
    The preoperative and postoperative values of urinary pseudouridine:creatinine (phi:C) and beta-aminoisobutyric acid:creatinine (beta AIB:C) were estimated, in 192 patients with urothelial tumours of the bladder, 92 of whom had not previously been diagnosed. Urinary phi:C ratio correlated with the grade of tumour cell dysplasia (being highest in dysplasia grade 3), and to a lesser extent with the clinical stage. The treatment had no major influence on the excretion ratios. Decreased ratios, or those within the reference range, were associated with a better prognosis than increased ratios, and if both were increased at the same time the risk for progression of the disease was high. The biological tumour markers pseudouridine and beta-aminoisobutyric acid may be helpful in the diagnosis of tumours in the upper urinary tract, and in the follow-up of patients with tumours of the bladder.
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