INTRODUCTION AND HYPOTHESIS: We evaluated changes in urinary nerve growth factor (NGF) and NGF/creatinine (NGF/Cr) levels after increasing the dosage of solifenacin in overactive bladder patients. METHODS: The study groups included 59 overactive bladder (OAB) patients and 20 healthy subjects as controls. We measured NGF at baseline for the patients and controls, and used the Overactive Bladder Awareness Tool (OAB-V8) to evaluate urinary symptoms. All patients received a treatment of solifenacin 5 mg for 6 weeks. The responders to treatment served as group 1 and nonresponders received solifenacin 10 mg for an additional 6 weeks. Responders and nonresponders to the 10-mg treatment were defined as groups 2 and 3 respectively. NGF was measured after each treatment using the ELISA method and normalized by the urinary creatinine levels (NGF/Cr). RESULTS: There were 21, 22 and 16 patients in groups 1, 2, and 3 respectively. At baseline, the NGF and NGF/Cr levels were higher in groups 1, 2, and 3 compared with the controls. After the solifenacin 5 mg treatment, the NGF and NGF/Cr levels of group 1 individuals decreased to those of the control level. After increasing the dosage of solifenacin to 10 mg in group 2, the NGF and NGF/Cr levels decreased to normal levels. In group 3 (patients who did not responded to any treatment), these levels remained unchanged. CONCLUSIONS: Our results suggest that urinary NGF could be a potential biomarker for monitoring the treatment of symptoms in OAB patients who are treated with solifenacin.
INTRODUCTION AND HYPOTHESIS: We evaluated changes in urinary nerve growth factor (NGF) and NGF/creatinine (NGF/Cr) levels after increasing the dosage of solifenacin in overactive bladderpatients. METHODS: The study groups included 59 overactive bladder (OAB) patients and 20 healthy subjects as controls. We measured NGF at baseline for the patients and controls, and used the Overactive Bladder Awareness Tool (OAB-V8) to evaluate urinary symptoms. All patients received a treatment of solifenacin 5 mg for 6 weeks. The responders to treatment served as group 1 and nonresponders received solifenacin 10 mg for an additional 6 weeks. Responders and nonresponders to the 10-mg treatment were defined as groups 2 and 3 respectively. NGF was measured after each treatment using the ELISA method and normalized by the urinary creatinine levels (NGF/Cr). RESULTS: There were 21, 22 and 16 patients in groups 1, 2, and 3 respectively. At baseline, the NGF and NGF/Cr levels were higher in groups 1, 2, and 3 compared with the controls. After the solifenacin 5 mg treatment, the NGF and NGF/Cr levels of group 1 individuals decreased to those of the control level. After increasing the dosage of solifenacin to 10 mg in group 2, the NGF and NGF/Cr levels decreased to normal levels. In group 3 (patients who did not responded to any treatment), these levels remained unchanged. CONCLUSIONS: Our results suggest that urinary NGF could be a potential biomarker for monitoring the treatment of symptoms in OABpatients who are treated with solifenacin.
Authors: Debra E Irwin; Ian Milsom; Steinar Hunskaar; Kate Reilly; Zoe Kopp; Sender Herschorn; Karin Coyne; Con Kelleher; Christian Hampel; Walter Artibani; Paul Abrams Journal: Eur Urol Date: 2006-10-02 Impact factor: 20.096
Authors: Christopher R Chapple; Walter Artibani; Linda D Cardozo; David Castro-Diaz; Michael Craggs; Francois Haab; Vik Khullar; Eboo Versi Journal: BJU Int Date: 2005-02 Impact factor: 5.588
Authors: W F Stewart; J B Van Rooyen; G W Cundiff; P Abrams; A R Herzog; R Corey; T L Hunt; A J Wein Journal: World J Urol Date: 2002-11-15 Impact factor: 4.226