Guoqing Chen1, Limin Liao, Qian Dong, Yanhe Ju. 1. Department of Urology, China Rehabilitation Research Center, School of Rehabilitation Medicine, Capital Medical University, Beijing, China.
Abstract
OBJECTIVE: To determine the inhibitory effects of pudendal nerve stimulation (5 Hz) on bladder overactivity at early and late stages of spinal cord injury in dogs. MATERIALS AND METHODS: The study was performed in eight dogs with chronic spinal cord transection at the T9-T10 level. Group 1 (four dogs) underwent electrical stimulation of pudendal nerve one month after spinal cord transection. Group 2 (four dogs) underwent stimulation six months after spinal cord transection. The bladders were removed for histological examination of fibrosis after the stimulation. RESULTS: The bladder capacity and the compliance were significantly increased (p < 0.05) by pudendal nerve stimulation in group 1, but not in group 2. The nonvoiding contractions were inhibited in both groups by electrical stimulation. Collagen fiber was increased, while elastic fiber was significantly decreased (p < 0.05) in group 2 when compared with group 1. CONCLUSION: Pudendal nerve stimulation can increase the bladder capacity and compliance only during the early period before the bladder wall becomes fibrosit and can inhibit the nonvoiding contraction during two stages.
OBJECTIVE: To determine the inhibitory effects of pudendal nerve stimulation (5 Hz) on bladder overactivity at early and late stages of spinal cord injury in dogs. MATERIALS AND METHODS: The study was performed in eight dogs with chronic spinal cord transection at the T9-T10 level. Group 1 (four dogs) underwent electrical stimulation of pudendal nerve one month after spinal cord transection. Group 2 (four dogs) underwent stimulation six months after spinal cord transection. The bladders were removed for histological examination of fibrosis after the stimulation. RESULTS: The bladder capacity and the compliance were significantly increased (p < 0.05) by pudendal nerve stimulation in group 1, but not in group 2. The nonvoiding contractions were inhibited in both groups by electrical stimulation. Collagen fiber was increased, while elastic fiber was significantly decreased (p < 0.05) in group 2 when compared with group 1. CONCLUSION: Pudendal nerve stimulation can increase the bladder capacity and compliance only during the early period before the bladder wall becomes fibrosit and can inhibit the nonvoiding contraction during two stages.
Authors: Elena E Foditsch; Karin Roider; Irina Patras; Ioan Hutu; Sophina Bauer; Günter Janetschek; Reinhold Zimmermann Journal: Int Neurourol J Date: 2017-03-24 Impact factor: 2.835
Authors: Elena E Keller; Irina Patras; Ioan Hutu; Karin Roider; Karl-Dietrich Sievert; Ludwig Aigner; Günter Janetschek; Lukas Lusuardi; Reinhold Zimmermann; Sophina Bauer Journal: Neurourol Urodyn Date: 2019-12-23 Impact factor: 2.696