Int Neurourol J.
2010 Oct;14(3):141-148.
Effect of Treadmill Exercise on Leak-point pressure and Neuronal Activation in Brain of Rats with Stress Urinary Incontinence
- Affiliations
-
- 1Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Korea.
- 2Department of Biochemistry, College of Medicine, Kyung Hee University, Seoul, Korea.
- 3Department of Physical Education, College of Social Science, Tong Myong University, Busan, Korea.
- 4Department of Ophthalmology, College of Medicine, Chungju Hospital, Konkuk University, Chungju, Korea.
- 5Department of Urology, Gachon University Gil Hospital, Incheon, Korea. kimcho99@gilhospital.com
Abstract
- PURPOSE
Stress urinary incontinence (SUI) commonly occurs in women, and it causes enormous impact on quality of life. Surgery, drugs, and exercise have been recommended for the treatment of this disease. Among these exercise is also known to be effective for relieving thesymptoms of SUI, however, the efficacy and underlying mechanisms of exercise on SUI are poorly understood. In the present study, we investigated the effect of treadmill exercise on abdominal leak-point pressure and neuronal activity in the medial preoptic nucleus (MPA), ventrolateral periaqueductal gray (vlPAG), and pontine micturition center (PMC) following urethrolysis in rats.
MATERIALS AND METHODS
Adult female Sprague-Dawley rats, weighing 250+/-10 g (9 weeks old), were used in this study. After having undergone transabdominal urethrolysis to induce SUI, the rats were divided into three groups (n=6 in each group): a sham operation group, an SUI-induced group, and an SUI-induced and treadmill exercise group. The rats in the exercise group performed treadmill running for 30 min once a day starting 2 weeks after the induction of SUI and continuing for 4 weeks after surgery. For this study, determination of abdominal leak point pressure and immunohistochemistry for c-Fos in the brain were performed.
RESULTS
Induction of transabdominal urethrolysis significantly reduced the abdominal leak point pressure, thereby contributing to the induction of SUI. In contrast, abdominal leak point pressure was significantly improved by treadmill exercise. The expression of c-Fosin the MPA, vlPAG, and PMC, the brain areas relating to micturition, was enhanced by the induction of SUI, whereas treadmill exercise significantly suppressed SUI-induced c-Fos expression, suggesting that neuronal activation in the micturition centers was suppressed by treadmill exercise.
CONCLUSION
The present results suggest that treadmill exercise may be an effective therapeutic modality for ameliorating the symptoms of SUI.
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