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Intravesical glucidic capsaicin versus glucidic solvent in neurogenic detrusor overactivity: A double blind controlled randomized study.

Author(s): de Seze M, Gallien P, Denys P, Labat JJ, Serment G, Grise P, Salle JY, Blazejewski S, Hazane C, Moore N, Joseph PA

Affiliation(s): Physical Medicine and Neurorehabilitation Unit, Bordeaux University Hospital, Bordeaux, France.

Publication date & source: 2006, Neurourol Urodyn., 25(7):752-7.

AIMS: Many studies report the use of alcoholic capsaicin instillation to treat neurogenic detrusor overactivity (NDO) in spinal cord injured (SCI) and multiple sclerosis (MS) patients. However, poor tolerability due to the irritative effect of the ethanol solvent limits its use. Our study aimed to evaluate the efficacy and tolerability of a new formulation of capsaicin in a glucidic solution in a multicenter clinical trial. MATERIALS AND METHODS: Thirty-three patients (26MS/7SCI) suffering from urinary incontinence due to refractory NDO were prospectively enrolled in a double-blind placebo controlled study and randomized to capsaicin group (CG, N = 17) or solvent group (SG, N = 16). They respectively received an intravesical instillation of 100 ml capsaicin diluted in glucidic solvent (CG) or glucidic solvent alone (SG). Efficacy (voiding chart, maximum cystometric capacity (MCC)) and tolerability were evaluated on days 0 (D0), 30 and 90. RESULTS: On D0, groups were homogeneous. On D30, significant improvement of overactive bladder syndrome and an increase in MCC were shown in CG, whereas there were no improvement in SG. No significant improvement was shown on D90 in both groups. There were no significant differences between groups regarding prevalence, duration, or intensity of side effects, except for short duration pubic pain during instillation more often reported in CG (58.8%) than in SG (12.5%) (P < 0.01). CONCLUSION: This placebo controlled study using glucidic capsaicin confirms its short-term efficacy in NDO patients. Global tolerance of glucidic capsaicin appeared satisfactory. Long-term efficacy and tolerance of repeated glucidic capsaicin instillations need to be evaluated. Neurourol. Urodynam. 25:752-757, 2006. (c) 2006 Wiley-Liss, Inc.

Page last updated: 2006-11-04

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