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

Tamsulosin: efficacy and safety in patients with neurogenic lower urinary tract dysfunction due to suprasacral spinal cord injury.

PURPOSE: We evaluated the efficacy and safety of tamsulosin in patients with neurogenic lower urinary tract dysfunction secondary to suprasacral spinal cord lesions in a 4-week randomized controlled trial (RCT) followed by a 1-year, open label, long-term study. MATERIALS AND METHODS: A total of 263 patients were randomized to 4-week double-blind therapy with placebo, or 0.4 or 0.8 mg tamsulosin once daily. Of these, 244 patients completed the RCT, 186 continued long-term tamsulosin therapy (0.4 or 0.8 mg once daily) and 134 completed 1-year treatment. The primary efficacy parameter was maximum urethral pressure (MUP). RESULTS: Although the mean decrease in MUP at 4 weeks in the RCT did not reach statistical significance over the placebo, it was more pronounced with 0.4 (-12.2 cm H2O or -10%) and 0.8 mg (-9.6 cm H2O or -9%) tamsulosin than placebo (-6.5 cm H2O or -3%). In the long-term study there was a statistically significant mean decrease in MUP (-18.0 cm H2O, p <0.001 or -15%) from baseline to end point. In the long-term study tamsulosin also decreased maximum urethral closure pressure, improved several cystometry parameters related to bladder storage and emptying, and increased to a statistically significantly degree, from baseline to end point, mean voided volume based on the micturition diary. There was statistically significant improvement for the International Prostate Symptom Score Quality of Life, as well as several questions about symptoms related to urinary leakage, and 1 question on bladder emptying and frequency, bother and severity of symptoms of autonomic dysreflexia. Finally, 71% of patients improved according to investigators (44% slightly and 27% much improved). Both doses were effective and well tolerated. CONCLUSIONS: Long-term tamsulosin treatment (0.4 and 0.8 mg once daily) seems to be effective and well tolerated in patients with neurogenic lower urinary tract dysfunction. The results suggest that it improves bladder storage and emptying, and decreases symptoms of autonomic dysreflexia.[1]


  1. Tamsulosin: efficacy and safety in patients with neurogenic lower urinary tract dysfunction due to suprasacral spinal cord injury. Abrams, P., Amarenco, G., Bakke, A., Buczyński, A., Castro-Diaz, D., Harrison, S., Kramer, G., Marsik, R., Prajsner, A., Stöhrer, M., Van Kerrebroeck, P., Wyndaele, J.J. J. Urol. (2003) [Pubmed]
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