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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Reducing mucus production after urinary reconstruction: a prospective randomized trial.

PURPOSE: After transposition into the urinary tract, intestinal segments continue to produce mucus. We determine the effectiveness of muco-regulatory drugs, including N-acetylcysteine, aspirin and ranitidine, in reducing mucus secretion and urine viscosity in patients with transposed segments. MATERIALS AND METHODS: Our trial was a prospective randomized, double-blind placebo controlled crossover study involving 12 patients who underwent ileal conduit and 31 who underwent bladder reconstruction. Each treatment lasted 3 weeks with a 2-week washout. Pretreatment and posttreatment 24-hour urine samples were analyzed for mucin and viscosity after papain digestion, sodium dodecyl sulfate-polyacrylamide gel electrophoresis and periodic acid-Schiff assay. A disease specific questionnaire and SF-36 quality of life survey were completed. RESULTS: According to the questionnaire, mucus production did not decrease with time in 67% of patients. Mucin comprised 3% of the total nondialyzable material in urine (65 mg./24-hour for ileal conduit and 60 mg./24-hour for bladder reconstruction). Analysis of questionnaires and laboratory results failed to demonstrate any benefit of taking muco-regulatory agents compared with placebo. CONCLUSIONS: The use of N-acetylcysteine, aspirin and ranitidine did not result in a reduction in mucin production, urine viscosity or improvement in quality of life.[1]


  1. Reducing mucus production after urinary reconstruction: a prospective randomized trial. N'Dow, J., Robson, C.N., Matthews, J.N., Neal, D.E., Pearson, J.P. J. Urol. (2001) [Pubmed]
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