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Kim S, Na HS, Park JM, Kim JW. Novel botulinum neurotoxin-A tibial nerve perineural injection to alleviate overactive bladder symptoms in male rats. Anim Cells Syst (Seoul) 2022; 26:283-290. [PMID: 36605585 PMCID: PMC9809416 DOI: 10.1080/19768354.2022.2136239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Although tibial nerve modulation has shown to induce positive changes in the overactive bladder (OAB), prolonged therapeutic effects using percutaneous stimulation have not yet been achieved. Intradetrusor onabotulinum toxin A injection can provide prolonged therapeutic effects; however, its delivery requires invasive measures. By applying local relief of tibial nerve neural entrapment with onabotulinum toxin A injection, this study investigated the feasibility and efficacy of combining the abovementioned two therapeutic strategies. An OAB animal model was developed using 12 adult Sprague-Dawley rats with cyclophosphamide intraperitoneal injection. A perineural injection site comparable to the tibial nerve perineural injection site and corresponding to that in humans was identified and developed in rats. The toxin was injected five days after establishing the OAB. The incision was made in the skin on the lateral surface of the thigh. The biceps femoris muscle was cut across, exposing the sciatic nerve and its three terminal branches: the sural, common peroneal, and tibial nerves, and 100 units of onabotulinum toxin A was injected into the surrounding tissue. Five days following injection, cystometry was performed. Inter-contraction time, contraction pressure, and interval of the disease state improved with statistical significance. The OAB animal model showed significant improvement with the tibial nerve perineural injection of botulinum toxin, thereby suggesting the possibility of a comparable treatment adaptation in humans.
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Affiliation(s)
- Seungbeom Kim
- Department of Biomedical Science, Kyung Hee University, Seoul, Korea
| | - Hyun Seok Na
- Department of Urology, Chungnam National University Hospital, Daejon, Korea
| | - Jong Mok Park
- Department of Urology, Chungnam National University Hospital, Daejon, Korea,Department of Urology, Chungnam National University Sejong Hospital, Sejong, Korea
| | - Jin Wook Kim
- Department of Medical Informatics, Chung-Ang University, Seoul, Korea,Department of Urology, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, Korea, Jin Wook Kim Department of Urology, Chung-Ang University Gwangmyeong Hospital, Deokan Ro 110, Gwangmyeong, GyeonggiKR 14353, Korea
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Herrity AN, Aslan SC, Mesbah S, Siu R, Kalvakuri K, Ugiliweneza B, Mohamed A, Hubscher CH, Harkema SJ. Targeting bladder function with network-specific epidural stimulation after chronic spinal cord injury. Sci Rep 2022; 12:11179. [PMID: 35778466 PMCID: PMC9249897 DOI: 10.1038/s41598-022-15315-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 06/22/2022] [Indexed: 11/20/2022] Open
Abstract
Profound dysfunctional reorganization of spinal networks and extensive loss of functional continuity after spinal cord injury (SCI) has not precluded individuals from achieving coordinated voluntary activity and gaining multi-systemic autonomic control. Bladder function is enhanced by approaches, such as spinal cord epidural stimulation (scES) that modulates and strengthens spared circuitry, even in cases of clinically complete SCI. It is unknown whether scES parameters specifically configured for modulating the activity of the lower urinary tract (LUT) could improve both bladder storage and emptying. Functional bladder mapping studies, conducted during filling cystometry, identified specific scES parameters that improved bladder compliance, while maintaining stable blood pressure, and enabled the initiation of voiding in seven individuals with motor complete SCI. Using high-resolution magnetic resonance imaging and finite element modeling, specific neuroanatomical structures responsible for modulating bladder function were identified and plotted as heat maps. Data from this pilot clinical trial indicate that scES neuromodulation that targets bladder compliance reduces incidences of urinary incontinence and provides a means for mitigating autonomic dysreflexia associated with bladder distention. The ability to initiate voiding with targeted scES is a key step towards regaining volitional control of LUT function, advancing the application and adaptability of scES for autonomic function.
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Affiliation(s)
- April N Herrity
- Kentucky Spinal Cord Injury Research Center, Department of Neurological Surgery, The University of Louisville, 220 Abraham Flexner Way, Suite 1518, Louisville, KY, 40202, USA. .,Department of Neurological Surgery, University of Louisville, Louisville, KY, USA. .,Department of Physiology, University of Louisville, Louisville, KY, USA.
| | - Sevda C Aslan
- Kentucky Spinal Cord Injury Research Center, Department of Neurological Surgery, The University of Louisville, 220 Abraham Flexner Way, Suite 1518, Louisville, KY, 40202, USA.,Department of Neurological Surgery, University of Louisville, Louisville, KY, USA
| | - Samineh Mesbah
- Kentucky Spinal Cord Injury Research Center, Department of Neurological Surgery, The University of Louisville, 220 Abraham Flexner Way, Suite 1518, Louisville, KY, 40202, USA.,Department of Neurological Surgery, University of Louisville, Louisville, KY, USA
| | - Ricardo Siu
- Kentucky Spinal Cord Injury Research Center, Department of Neurological Surgery, The University of Louisville, 220 Abraham Flexner Way, Suite 1518, Louisville, KY, 40202, USA.,Department of Neurological Surgery, University of Louisville, Louisville, KY, USA
| | - Karthik Kalvakuri
- Kentucky Spinal Cord Injury Research Center, Department of Neurological Surgery, The University of Louisville, 220 Abraham Flexner Way, Suite 1518, Louisville, KY, 40202, USA
| | - Beatrice Ugiliweneza
- Kentucky Spinal Cord Injury Research Center, Department of Neurological Surgery, The University of Louisville, 220 Abraham Flexner Way, Suite 1518, Louisville, KY, 40202, USA.,Department of Neurological Surgery, University of Louisville, Louisville, KY, USA.,Department of Health Sciences, University of Louisville, Louisville, KY, USA
| | - Ahmad Mohamed
- Department of Urology, University of Louisville, Louisville, KY, USA
| | - Charles H Hubscher
- Kentucky Spinal Cord Injury Research Center, Department of Neurological Surgery, The University of Louisville, 220 Abraham Flexner Way, Suite 1518, Louisville, KY, 40202, USA.,Department of Anatomical Sciences and Neurobiology, University of Louisville, Louisville, KY, USA
| | - Susan J Harkema
- Kentucky Spinal Cord Injury Research Center, Department of Neurological Surgery, The University of Louisville, 220 Abraham Flexner Way, Suite 1518, Louisville, KY, 40202, USA.,Department of Neurological Surgery, University of Louisville, Louisville, KY, USA
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