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Duan X, Chen Z, Zhan Z, Li L, Lei X, Long Y, Xie X, Chen H. Establishment of new transurethral catheterization methods for male mice. Biol Methods Protoc 2024; 9:bpae005. [PMID: 38414648 PMCID: PMC10898326 DOI: 10.1093/biomethods/bpae005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/23/2024] [Accepted: 02/01/2024] [Indexed: 02/29/2024] Open
Abstract
Transurethral catheterization in mice is multifaceted, serving essential functions such as perfusion and drug delivery, and is critical in the development of various urological animal disease models. The complex anatomy of the male mouse urethra presents significant challenges in transurethral catheterization, leading to a predominance of research focused on female specimens. This bias limits the utilization of male mice in lower urinary tract disease studies. Our research aims to develop new reliable methods for transurethral catheterization in adult male mice, thereby expanding their use in relevant disease research. Experiments were conducted on adult male C57BL/6J mice. Utilizing a PE10 catheter measuring 4.5-5 cm in length, the catheter was inserted into the bladder via the mouse's urethra under anesthesia. The intubation technique entailed regulating the insertion force, ensuring the catheter's lubrication, using a trocar catheter, modifying the catheter's trajectory, and accommodating the curvature of the bladder neck. Post-catheter insertion, ultrasound imaging was employed to confirm the catheter's accurate positioning within the bladder. Subsequent to catheterization, the bladder was perfused using trypan blue. This method was further validated through its successful application in establishing an acute urinary retention (AUR) model, where the mouse bladder was infused with saline to a pressure of 50 or 80 cm H2O, maintained steadily for 30 min. A thorough morphological assessment of the mouse bladder was conducted after the infusion. Our study successfully pioneered methods for transurethral catheterization in male mice. This technique not only facilitates precise transurethral catheterization but also proves applicable to male mouse models for lower urinary tract diseases, such as AUR.
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Affiliation(s)
- Xi Duan
- The School of Basic Medical Science, Southwest Medical University, Luzhou 646000, China
- Public Center of Experimental Technology, Model Animal and Human Disease Research of Luzhou Key Laboratory, Southwest Medical University, Luzhou 646000, China
| | - Zhibin Chen
- Department of Urology, Neijiang First People's Hospital, Neijiang 641099, China
| | - Zhean Zhan
- The School of Basic Medical Science, Southwest Medical University, Luzhou 646000, China
- Public Center of Experimental Technology, Model Animal and Human Disease Research of Luzhou Key Laboratory, Southwest Medical University, Luzhou 646000, China
| | - Langhui Li
- The School of Basic Medical Science, Southwest Medical University, Luzhou 646000, China
- Public Center of Experimental Technology, Model Animal and Human Disease Research of Luzhou Key Laboratory, Southwest Medical University, Luzhou 646000, China
| | - Xianying Lei
- Department of Critical Care Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Yang Long
- Metabolic Vascular Disease Key Laboratory of Sichuan Province, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Xiang Xie
- The School of Basic Medical Science, Southwest Medical University, Luzhou 646000, China
- Public Center of Experimental Technology, Model Animal and Human Disease Research of Luzhou Key Laboratory, Southwest Medical University, Luzhou 646000, China
| | - Huan Chen
- The School of Basic Medical Science, Southwest Medical University, Luzhou 646000, China
- Public Center of Experimental Technology, Model Animal and Human Disease Research of Luzhou Key Laboratory, Southwest Medical University, Luzhou 646000, China
- Nucleic Acid Medicine of Luzhou Key Laboratory, Southwest Medical University, Luzhou 646000, China
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Shan S, Li Q, Criswell T, Atala A, Zhang Y. Stem cell therapy combined with controlled release of growth factors for the treatment of sphincter dysfunction. Cell Biosci 2023; 13:56. [PMID: 36927578 PMCID: PMC10018873 DOI: 10.1186/s13578-023-01009-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 03/06/2023] [Indexed: 03/18/2023] Open
Abstract
Sphincter dysfunction often occurs at the end of tubule organs such as the urethra, anus, or gastroesophageal sphincters. It is the primary consequence of neuromuscular impairment caused by trauma, inflammation, and aging. Despite intensive efforts to recover sphincter function, pharmacological treatments have not achieved significant improvement. Cell- or growth factor-based therapy is a promising approach for neuromuscular regeneration and the recovery of sphincter function. However, a decrease in cell retention and viability, or the short half-life and rapid degradation of growth factors after implantation, remain obstacles to the translation of these therapies to the clinic. Natural biomaterials provide unique tools for controlled growth factor delivery, which leads to better outcomes for sphincter function recovery in vivo when stem cells and growth factors are co-administrated, in comparison to the delivery of single therapies. In this review, we discuss the role of stem cells combined with the controlled release of growth factors, the methods used for delivery, their potential therapeutic role in neuromuscular repair, and the outcomes of preclinical studies using combination therapy, with the hope of providing new therapeutic strategies to treat incontinence or sphincter dysfunction of the urethra, anus, or gastroesophageal tissues, respectively.
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Affiliation(s)
- Shengzhou Shan
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
| | - Tracy Criswell
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Yuanyuan Zhang
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA.
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Wang L, Liu Y, Wang X, Shi G, Huang J, Xiao X, Xie Y. Association between urethral funneling in stress urinary incontinence and the biological properties of the urethral rhabdosphincter muscle based on shear wave elastography. Neurourol Urodyn 2023; 42:282-288. [PMID: 36335601 DOI: 10.1002/nau.25080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/12/2022] [Accepted: 10/19/2022] [Indexed: 11/08/2022]
Abstract
OBJECTIVES To apply shear wave elastography (SWE) combined with transperineal ultrasonography (TPUS) to study the association between urethral funneling in stress urinary incontinence (SUI) and the biological properties of the urethral rhabdosphincter muscle in women. METHODS This single-center retrospective study included 166 women with SUI (SUI group) and 185 women who underwent a routine physical examination (control group). The control group and SUI group were divided into nonfunneling and funneling groups according to the presence or absence of urethral funneling, respectively, and their ultrasound findings were compared to analyze the association between funneling and ultrasound measurements. RESULTS The SUI group had a lower mean E than the control group (15.54 vs. 20.82 kPa, p < 0.001). The SUI-funneling group had a lower mean E than the SUI-nonfunneling group (15.50 vs. 17.21 kPa, p < 0.001). The area under the (AUC) receiver operating characteristic (ROC) curve of the mean E for predicting SUI was 0.864, with a cutoff value of 19.19 kPa. The AUC of the mean E for predicting urethral funneling was 0.832, with a cutoff value of 17.15 kPa. The stiffness of the urethral rhabdosphincter was an independent factor related to SUI and urethral funneling in SUI. CONCLUSIONS SWE can be used to assess the biological properties of the urethral rhabdosphincter, and reduced stiffness of the rhabdosphincter was significantly correlated with SUI and funneling in SUI. Thus, women with urethral funneling in SUI may have a weak urethral rhabdosphincter.
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Affiliation(s)
- Liang Wang
- Department of Ultrasound Diagnosis, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), Guangzhou, China
| | - Yun Liu
- Department of Nephrology, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), Guangzhou, China
| | - Xiaona Wang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Guoqiang Shi
- Department of Urology Surgery, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), Guangzhou, China
| | - Jun Huang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Xue Xiao
- Department of Gynecology and Obstetrics, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), Guangzhou, China
| | - Ying Xie
- Department of Gynecology and Obstetrics, Guangzhou Red Cross Hospital (Guangzhou Red Cross Hospital of Jinan University), Guangzhou, China
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Elmore SA, Kavari SL, Hoenerhoff MJ, Mahler B, Scott BE, Yabe K, Seely JC. Histology Atlas of the Developing Mouse Urinary System With Emphasis on Prenatal Days E10.5-E18.5. Toxicol Pathol 2019; 47:865-886. [PMID: 31599209 DOI: 10.1177/0192623319873871] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Congenital abnormalities of the urinary tract are some of the most common human developmental abnormalities. Several genetically engineered mouse models have been developed to mimic these abnormalities and aim to better understand the molecular mechanisms of disease. This atlas has been developed as an aid to pathologists and other biomedical scientists for identification of abnormalities in the developing murine urinary tract by cataloguing normal structures at each stage of development. Hematoxylin and eosin- and immunohistochemical-stained sections are provided, with a focus on E10.5-E18.5, as well as a brief discussion of postnatal events in urinary tract development. A section on abnormalities in the development of the urinary tract is also provided, and molecular mechanisms are presented as supplementary material. Additionally, overviews of the 2 key processes of kidney development, branching morphogenesis and nephrogenesis, are provided to aid in the understanding of the complex organogenesis of the kidney. One of the key findings of this atlas is the histological identification of the ureteric bud at E10.5, as previous literature has provided conflicting reports on the initial point of budding. Furthermore, attention is paid to points where murine development is significantly distinct from human development, namely, in the cessation of nephrogenesis.
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Affiliation(s)
- Susan A Elmore
- Cellular and Molecular Pathology Branch, National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA
| | - Sanam L Kavari
- Cellular and Molecular Pathology Branch, National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, NC, USA
| | - Mark J Hoenerhoff
- In Vivo Animal Core, Unit for Laboratory Animal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Beth Mahler
- Experimental Pathology Laboratories, Inc, Research Triangle Park, NC, USA
| | | | - Koichi Yabe
- Pharmacovigilance Department, Daiichi Sankyo Co, Ltd, Tokyo, Japan
| | - John C Seely
- Experimental Pathology Laboratories, Inc, Research Triangle Park, NC, USA
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Gu X, Fan L, Ke R, Chen Y. rHGF interacts with rIGF-1 to activate the satellite cells in the striated urethral sphincter in rats: a promising treatment for urinary incontinence? Arch Gynecol Obstet 2018; 298:1149-1157. [PMID: 30306312 PMCID: PMC6244645 DOI: 10.1007/s00404-018-4930-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 10/01/2018] [Indexed: 11/11/2022]
Abstract
Purpose There are multitudes of factors contributing to urinary incontinence (UI). Dysfunction of the urethral sphincter is one of the common variables. Fortunately, satellite cells, which have the characteristics of stem cells, exist in the striated urethral sphincter. The purpose of the study was to seek whether rHGF combined with rIGF-1 owns the ability to promote the activation, proliferation, and differentiation of satellite cells to potentially improve urinary incontinence. Methods The SD rats were randomly divided into four groups and injected with 10 μl rIGF-1, the concentration of which was 50 μg/ml into the urethral wall of the urethral sphincter. Meanwhile, three groups were additionally treated with 10 μl rHGF, the concentration of which was 20, 50, 100 μg/ml. The group injected only with rIGF-1 was used as a control. 30 days later, the urethral tissues were harvested and serially sectioned. Immunofluorescent staining and HE staining were used to detect the activation, proliferation, and differentiation condition of satellite cells. The real-time RT-PCR analysis was applied to explore the potential signaling pathways. Result Anti-c-Met antibody-positive cells were discovered in the striated urethral sphincter. Positive expression of c-Met was relatively higher with the treatment of 100 μg/ml rHGF compared to other concentration of rHGF. A similar result was found in additional immunofluorescent staining. The number of newborn myofibers with central nuclei increased as the concentration of rHGF becoming higher. The mRNA expression of ERK1, ERK2 and AKT was comparatively higher with the injection of 50 μg/ml rHGF. Conclusion There is supposed to be a synergistic effect between rHGF and rIGF-1 to promote satellite cell to activate, proliferate and differentiate into muscle cells. The urethral sphincter may be induced to renew by the injection of rHGF and rIGF-1 into the urethral wall. It can be used to develop a new therapy for UI.
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Affiliation(s)
- Xijie Gu
- Department of Urology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Lailai Fan
- Department of Urology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Runjiang Ke
- Department of Urology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Yinghe Chen
- Department of Urology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China.
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Yan H, Zhong L, Jiang Y, Yang J, Deng J, Wei S, Opara E, Atala A, Mao X, Damaser MS, Zhang Y. Controlled release of insulin-like growth factor 1 enhances urethral sphincter function and histological structure in the treatment of female stress urinary incontinence in a rat model. BJU Int 2017; 121:301-312. [PMID: 28805303 DOI: 10.1111/bju.13985] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVES To determine the effects of controlled release of insulin-like growth factor 1 (IGF-1) from alginate-poly-L-ornithine-gelatine (A-PLO-G) microbeads on external urethral sphincter (EUS) tissue regeneration in a rat model of stress urinary incontinence (SUI), as SUI diminishes the quality of life of millions, particularly women who have delivered vaginally, which can injure the urethral sphincter. Despite several well-established treatments for SUI, growth factor therapy might provide an alternative to promote urethral sphincter repair. MATERIALS AND METHODS In all, 44 female Sprague-Dawley rats were randomised into four groups: vaginal distension (VD) followed by periurethral injection of IGF-1-A-PLO-G microbeads (VD + IGF-1 microbeads; 1 × 104 microbeads/1 mL normal saline); VD + empty microbeads; VD + saline; or sham-VD + saline (sham). RESULTS Urethral function (leak-point pressure, LPP) was significantly lesser 1 week after VD + saline [mean (sem) 23.9 (1.3) cmH2 O] or VD + empty microbeads [mean (sem) 21.7 (0.8) cmH2 O) compared to the sham group [mean (sem) 44.4 (3.4) cmH2 O; P < 0.05), indicating that the microbeads themselves do not create a bulking or obstructive effect in the urethra. The LPP was significantly higher 1 week after VD + IGF-1 microbeads [mean (sem) 28.4 (1.2) cmH2 O] compared to VD + empty microbeads (P < 0.05), and was not significantly different from the LPP in sham rats, demonstrating an initiation of a reparative effect even at 1 week after VD. Histological analysis showed well-organised skeletal muscle fibres and vascular development in the EUS at 1 week after VD + IGF-1 microbeads, compared to substantial muscle fibre attenuation and disorganisation, and less vascular formation at 1 week after VD + saline or VD + empty microbeads. CONCLUSION Periurethral administration of IGF-1-A-PLO-G microbeads facilitates recovery from SUI by promoting skeletal myogenesis and revascularisation. This therapy is promising, but detailed and longer term studies in animal models and humans are needed.
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Affiliation(s)
- Hao Yan
- Biomedical Engineering Department of the Lerner Research Institute, Cleveland, OH, USA.,Department of Urology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Liren Zhong
- Institute for Regenerative Medicine, Wake Forest University, Winston-Salem, NC, USA.,Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yaodong Jiang
- Institute for Regenerative Medicine, Wake Forest University, Winston-Salem, NC, USA.,Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jian Yang
- Institute for Regenerative Medicine, Wake Forest University, Winston-Salem, NC, USA
| | - Junhong Deng
- Department of Andrology, The First People's Hospital of Guangzhou, Guangzhou, Guangdong, China
| | - Shicheng Wei
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
| | - Emmanuel Opara
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Anthony Atala
- Institute for Regenerative Medicine, Wake Forest University, Winston-Salem, NC, USA
| | - Xiangming Mao
- Department of Urology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Margot S Damaser
- Biomedical Engineering Department of the Lerner Research Institute, Cleveland, OH, USA.,The Advanced Platform Technology Center of the Louis Stokes Cleveland VA Medical Center, Cleveland, OH, USA.,Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Yuanyuan Zhang
- Institute for Regenerative Medicine, Wake Forest University, Winston-Salem, NC, USA
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