Author(s): Kallestrup EB, Jorgensen SS, Nordling J, Hald T
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Abstract OBJECTIVE: To determine whether intravesical hyaluronic acid id effective in reducing the urinary frequency and pain associated with interstitial cystitis/painful bladder syndrome (IC/PBS). MATERIAL AND METHODS: In a prospective, unblinded, uncontrolled pilot study, 20 patients (age range 34-80 years), all suffering from IC/PBS, received weekly bladder instillations of hyaluronic acid for 1 month and monthly instillations for a further 2 months. Patients were then offered further monthly instillations and all were subsequently evaluated after 3 years. Patient outcomes assessed were urinary frequency, use of analgesics and pain. RESULTS: All patients completed the 3 months of hyaluronic acid treatment with mean decreases in nocturia and pain of 40\% and 30\%, respectively, and decrease in analgesic use. Thirteen patients (65\%) responded to treatment (responders) and continued therapy, while seven patents withdrew, six because of a lack of response and one due to cystectomy. In the 13 patients who continued hyaluronic acid instillations, four complete responders(30\%) ceased therapy after a strong positive response (36\%, 60\% and 81\% decreases compared to baseline in day-time voids, night-time voids and scores, respectively) which was maintained in the absence of continuous therapy, while after 3 years seven partial responders (35\%) were still on therapy (25\% and 43\% decreases compared to baseline in day-time voids and pain scores, respectively). Two patients developed other diseases during follow-up and showed no response to long-term therapy. Hyaluronic acid was will tolerated by all patients. CONCLUSION: Hyaluronic acid safely reduced the pain and, to lesser degree, the urinary frequency associated with IC.
This article was published in Scand J Urol Nephrol
and referenced in Journal of Bioequivalence & Bioavailability