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Wang J, Ren L, Liu X, Xu W, Liu M, Hu P, Wang T, Liu J, Ling Q. Transcriptomics Reveals Molecular Features of the Bilateral Pelvic Nerve Injury Rat Model of Detrusor Underactivity. Biomolecules 2023; 13:1260. [PMID: 37627325 PMCID: PMC10452637 DOI: 10.3390/biom13081260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/12/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
The pathogenesis of detrusor underactivity (DU) is unclear, and the available therapeutic effects are unsatisfactory. We propose to find key molecules and pathways related to DU based on transcriptome sequencing. A rat model of bilateral pelvic nerve injury (BPNI) was established. Bladder tissues from the sham-operated group, 3 and 28 days after BPNI mapping, were taken for urodynamics, histopathology, and RNA-seq. An enrichment analysis of the screened differential expression genes was performed. Three days after BPNI, the results showed urodynamic features of overflow incontinence, while there was a recovery at 28 days after the operation. Masson staining revealed collagen deposition accompanied by progressive thickening of the smooth muscle layer as DU progressed. RNA-seq results suggested that a total of 1808 differentially expressed genes (DEGs) differed among the groups. RNA-seq and subsequent analysis confirmed that the cell cycle and immune response were significantly activated 3 days after BPNI, while extracellular matrix remodeling occurred 28 days after BPNI. Partial DEGs and pathways were verified by qRT-PCR. Validation of key proteins involved in cell cycle, inflammation, and fibrosis was performed by immunohistochemical staining and western blot, respectively. These molecular expression patterns at different time points after BPNI injury provide valuable insights into the search for therapeutic targets for DU.
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Affiliation(s)
- Jiaxin Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (J.W.)
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Lida Ren
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (J.W.)
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xinqi Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (J.W.)
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Wenchao Xu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (J.W.)
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Man Liu
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Peng Hu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (J.W.)
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tao Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (J.W.)
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jihong Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (J.W.)
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qing Ling
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (J.W.)
- Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Vanneste M, Mulier M, Nogueira Freitas AC, Van Ranst N, Kerstens A, Voets T, Everaerts W. TRPM3 Is Expressed in Afferent Bladder Neurons and Is Upregulated during Bladder Inflammation. Int J Mol Sci 2021; 23:ijms23010107. [PMID: 35008533 PMCID: PMC8745475 DOI: 10.3390/ijms23010107] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 02/06/2023] Open
Abstract
The cation channel TRPM3 is activated by heat and the neurosteroid pregnenolone sulfate. TRPM3 is expressed on sensory neurons innervating the skin, where together with TRPV1 and TRPA1, it functions as one of three redundant sensors of acute heat. Moreover, functional upregulation of TRPM3 during inflammation contributes to heat hyperalgesia. The role of TRPM3 in sensory neurons innervating internal organs such as the bladder is currently unclear. Here, using retrograde labeling and single-molecule fluorescent RNA in situ hybridization, we demonstrate expression of mRNA encoding TRPM3 in a large subset of dorsal root ganglion (DRG) neurons innervating the mouse bladder, and confirm TRPM3 channel functionality in these neurons using Fura-2-based calcium imaging. After induction of cystitis by injection of cyclophosphamide, we observed a robust increase of the functional responses to agonists of TRPM3, TRPV1, and TRPA1 in bladder-innervating DRG neurons. Cystometry and voided spot analysis in control and cyclophosphamide-treated animals did not reveal differences between wild type and TRPM3-deficient mice, indicating that TRPM3 is not critical for normal voiding. We conclude that TRPM3 is functionally expressed in a large proportion of sensory bladder afferent, but its role in bladder sensation remains to be established.
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Affiliation(s)
- Matthias Vanneste
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
| | - Marie Mulier
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
| | - Ana Cristina Nogueira Freitas
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
| | - Nele Van Ranst
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
| | - Axelle Kerstens
- VIB Bio Imaging Core, VIB-KU Leuven Center for Brain & Disease Research, Belgium & Research Group Molecular Neurobiology, Department of Neuroscience, KU Leuven, 3000 Leuven, Belgium;
| | - Thomas Voets
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
- Correspondence: ; Tel.: +32-16-33-02-17
| | - Wouter Everaerts
- Laboratory of Organ Systems, Department of Development and Regeneration, KU Leuven, Belgium & Department of Urology, University Hospitals Leuven, 3000 Leuven, Belgium;
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Franken J, De Bruyn H, Rietjens R, Segal A, De Ridder D, Everaerts W, Voets T, Vande Velde G. X-ray videocystometry for high-speed monitoring of urinary tract function in mice. SCIENCE ADVANCES 2021; 7:7/30/eabi6821. [PMID: 34301607 PMCID: PMC8302127 DOI: 10.1126/sciadv.abi6821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
Lower urinary tract dysfunction (LUTd) represents a major health care problem with a high, unmet medical need. Design of additional therapies for LUTd requires precise tools to study bladder storage and voiding (dys)function in animal models. We developed videocystometry in mice, combining intravesical pressure measurements with high-speed fluoroscopy of the urinary tract. Videocystometry substantially outperforms current state-of-the-art methods to monitor the urine storage and voiding process, by enabling quantitative analysis of voiding efficiency, urethral flow, vesicoureteral reflux, and the relation between intravesical pressure and flow, in both anesthetized and awake, nonrestrained mice. Using videocystometry, we identified localized bladder wall micromotions correlated with different states of the filling/voiding cycle, revealed an acute effect of TRPV1 channel activation on voiding efficiency, and pinpointed the effects of urethane anesthesia on urine storage and urethral flow. Videocystometry has broad applications, ranging from the elucidation of molecular mechanisms of bladder control to drug development for LUTd.
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Affiliation(s)
- Jan Franken
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Centre for Brain and Disease Research, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Helene De Bruyn
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Centre for Brain and Disease Research, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Roma Rietjens
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Centre for Brain and Disease Research, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Andrei Segal
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Centre for Brain and Disease Research, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Dirk De Ridder
- Laboratory of Organ System, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Wouter Everaerts
- Laboratory of Organ System, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Thomas Voets
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Centre for Brain and Disease Research, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium.
| | - Greetje Vande Velde
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
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Yeh CH, Chen BH, Tseng XW, Liao CH, Tsai WK, Chiang HS, Wu YN. Intravesical Instillation of Norketamine, a Ketamine Metabolite, and Induced Bladder Functional Changes in Rats. TOXICS 2021; 9:toxics9070154. [PMID: 34209184 PMCID: PMC8309735 DOI: 10.3390/toxics9070154] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/20/2021] [Accepted: 06/25/2021] [Indexed: 12/13/2022]
Abstract
This study aimed to determine the mechanism of ketamine-induced cystitis without metabolism. A total of 24 adult male Sprague-Dawley rats were separated into control, ketamine, and norketamine groups. To induce cystitis, rats in the ketamine and norketamine groups were treated with intravesical instillation of ketamine and norketamine by mini-osmotic pump, which was placed in subcutaneous space, daily for 24 h for 4 weeks. After 4 weeks, all rats were subjected to bladder functional tests. The bladders were collected for histological and pathological evaluation. Compared to control, ketamine treatment demonstrated an increase in the bladder weight, high bladder/body coefficient, contractive pressure, voiding volume, collagen deposition, reduced smooth muscle content, damaged glycosaminoglycan layer, and low bladder compliance. Compared to ketamine, norketamine treatment showed more severe collagen deposition, smooth muscle loss, damaged glycosaminoglycan layer, and increased residual urine. Intravesical administration of ketamine and norketamine induced cystitis with different urodynamic characteristics. Norketamine treatment caused more severe bladder dysfunction than ketamine treatment. Direct treatment of the bladder with norketamine induced symptoms more consistent with those of bladder outlet obstruction than ketamine cystitis. Detailed studies of cellular mechanisms are required to determine the pathogenesis of ketamine cystitis.
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Affiliation(s)
- Chung-Hsin Yeh
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan; (C.-H.Y.); (C.-H.L.)
- Division of Urology, Department of Surgery, Shin Kong Wu Ho-Su Memorial Hospital, Taipei City 111, Taiwan
| | - Bo-He Chen
- Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, New Taipei City 242, Taiwan;
| | - Xiao-Wen Tseng
- Program in Pharmaceutical Biotechnology, College of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan;
| | - Chun-Hou Liao
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan; (C.-H.Y.); (C.-H.L.)
- Division of Urology, Department of Surgery, Cardinal Tien Hospital, New Taipei City 231, Taiwan
| | - Wei-Kung Tsai
- Department of Urology, Mackay Memorial Hospital, Taipei City 104, Taiwan;
- Ph.D. Program in Nutrition and Food Science, Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, New Taipei City 242, Taiwan
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan
- Mackay Junior College of Medicine, Nursing, and Management, Taipei City 252, Taiwan
| | - Han-Sun Chiang
- Graduate Institute of Biomedical and Pharmaceutical Science, Fu Jen Catholic University, New Taipei City 242, Taiwan;
- Division of Urology, Department of Surgery, Cardinal Tien Hospital, New Taipei City 231, Taiwan
- Department of Urology, Fu Jen Catholic University Hospital, New Taipei City 243, Taiwan
- Correspondence: (H.-S.C.); (Y.-N.W.); Tel.: +886-2-29052202 (H.-S.C.); +886-2-29056442 (Y.-N.W.); Fax: +886-2-29017391 (H.-S.C.); +886-2-29056100 (Y.-N.W.)
| | - Yi-No Wu
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan; (C.-H.Y.); (C.-H.L.)
- Correspondence: (H.-S.C.); (Y.-N.W.); Tel.: +886-2-29052202 (H.-S.C.); +886-2-29056442 (Y.-N.W.); Fax: +886-2-29017391 (H.-S.C.); +886-2-29056100 (Y.-N.W.)
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5
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Establishment of animal model manifested as bladder neurogenic changes generated by bilateral pelvic nerve injury in male rats. Int Urol Nephrol 2020; 53:421-429. [PMID: 33025408 DOI: 10.1007/s11255-020-02668-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/25/2020] [Indexed: 01/01/2023]
Abstract
PURPOSE To establish a male rat model of neurogenic bladder after bilateral pelvic nerve injury (BPNI) and investigate the factors associated with onset of neurogenic bladder. METHODS Twenty-four 8-week-old male Sprague-Dawley rats were randomly divided into three groups (n = 8 rats per group). Rats in 4-week and 8-week nerve injury group underwent BPNI, while rats in the sham group underwent a sham operation. Bladder functional analysis were performed and then bladders tissues were harvested for morphological examination and investigating the mRNA expression levels of target genes in all rats. RESULTS The bladder weight significantly increased in rats following BPNI. Functional analysis revealed non-voiding contractions and decreased detrusor contractility following BPNI, manifested as elevated post-void residual and bladder capacity while reduced maximum voiding pressure and voiding efficiency. The collagen area in bladder tissue and mRNA expression levels of target genes significantly increased at 4 or 8 weeks post-BPNI except Smad3. At 4 weeks post-BPNI, expression levels of vesicular acetylcholine transporter were reduced, then returned to baseline at 8 weeks. Expression levels of tyrosine hydroxylase were reduced at both 4 and 8 weeks post-BPNI. CONCLUSIONS A neurogenic bladder animal model was successfully established by performing BPNI in male rats, characterized by impaired voiding function, bladder detrusor fibrosis, and reduced neurotransmitter release.
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Assaly R, Faugeroux J, Laurin M, Compagnie S, Alexandre L, Giuliano F, Behr-Roussel D. Silodosin improves functional consequences of lower urinary tract obstruction secondary to benign prostate hypertrophy, a proof of concept study in the spontaneously hypertensive rat supplemented with testosterone. BMC Urol 2020; 20:132. [PMID: 32854676 PMCID: PMC7453715 DOI: 10.1186/s12894-020-00699-y] [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: 09/10/2019] [Accepted: 08/18/2020] [Indexed: 11/13/2022] Open
Abstract
Background The main purpose of this study is to investigate the effect of silodosin on the urodynamic consequences in a previously established model of lower urinary tract symptoms associated with benign prostate hyperplasia, the spontaneously hypertensive rats (SHR) supplemented with testosterone. Methods Three groups of animals (8-week-old; n = 10/group) were considered: Wistar Kyoto (control) rats (WKY), SHR supplemented with testosterone at 3 mg/kg/day and treated with either vehicle (SHR-T, n = 10) or silodosin at 0.1 mg/kg/day (SHR-T + silodosin, n = 10) by oral gavage for 6 weeks. Cystometry experiments were performed. The bladder was harvested, weighed and paraffin-embedded for morphometric analysis. The prostate was also harvested and weighed. Results The number of animals included in the analysis were n = 10/10 for WKY and n = 7–8/10 for each SHR rats supplemented with testosterone group. SHR-T displayed a significant decrease in the intercontraction interval, infused volume and mean flow rate whereas the frequency of non-voiding contractions was increased. Silodosin improved the voiding behavior of SHR-T by significantly increasing the intercontraction interval, the infused volume and the mean flow rate and decreasing the number of non-voiding contractions. SHR-T displayed a significant increase in prostate and bladder weights and a 15% increase in the detrusor wall area compared to WKY. Conclusions Chronic silodosin treatment relieved storage symptoms in SHR supplemented with testosterone and decreased the frequency of non-voiding detrusor contractions during the filling phase.
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Affiliation(s)
- Rana Assaly
- Pelvipharm, Montigny-le-Bretonneux, France.,Université Paris-Saclay, UVSQ, Inserm, END-ICAP, Versailles, France
| | - Julie Faugeroux
- Pelvipharm, Montigny-le-Bretonneux, France.,Université Paris-Saclay, UVSQ, Inserm, END-ICAP, Versailles, France
| | - Miguel Laurin
- Pelvipharm, Montigny-le-Bretonneux, France.,Université Paris-Saclay, UVSQ, Inserm, END-ICAP, Versailles, France
| | - Sandrine Compagnie
- Pelvipharm, Montigny-le-Bretonneux, France.,Université Paris-Saclay, UVSQ, Inserm, END-ICAP, Versailles, France
| | | | - François Giuliano
- Pelvipharm, Montigny-le-Bretonneux, France.,Université Paris-Saclay, UVSQ, Inserm, END-ICAP, Versailles, France.,AP-HP, Neuro-Uro-Andrology, Department of Physical Medicine and Rehabilitation, Raymond Poincaré Hospital, Garches, France
| | - Delphine Behr-Roussel
- Pelvipharm, Montigny-le-Bretonneux, France. .,Université Paris-Saclay, UVSQ, Inserm, END-ICAP, Versailles, France.
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7
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Alpizar YA, Uvin P, Naert R, Franken J, Pinto S, Sanchez A, Gevaert T, Everaerts W, Voets T, De Ridder D, Talavera K. TRPV4 Mediates Acute Bladder Responses to Bacterial Lipopolysaccharides. Front Immunol 2020; 11:799. [PMID: 32435246 PMCID: PMC7218059 DOI: 10.3389/fimmu.2020.00799] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/07/2020] [Indexed: 12/24/2022] Open
Abstract
Urinary tract infections (UTI) affect a large proportion of the population, causing among other symptoms, more frequent and urgent micturition. Previous studies reported that the gram-negative bacterial wall component lipopolysaccharides (LPS) trigger acute epithelial and bladder voiding responses, but the underlying mechanisms remain unknown. The cation channel TRPV4 is implicated in the regulation of the bladder voiding. Since TRPV4 is activated by LPS in airway epithelial cells, we sought to determine whether this channel plays a role in LPS-induced responses in urothelial cells (UCs). We found that human-derived UCs display a fast increase in intracellular Ca2+ concentration upon acute application of Escherichia coli LPS. Such responses were detected also in freshly isolated mouse UCs, and found to be dependent on TRPV4, but not to require the canonical TLR4 signaling pathway of LPS detection. Confocal microscopy experiments revealed that TRPV4 is dispensable for LPS-induced nuclear translocation of NF-κB in mouse UCs. On the other hand, quantitative RT PCR determinations showed an enhanced LPS-induced production of proinflammatory cytokines in TRPV4-deficient UCs. Cystometry experiments in anesthetized wild type mice revealed that acute intravesical instillation of LPS rapidly increases voiding frequency. This effect was not observed in TRPV4-deficient animals, but was largely preserved in Tlr4 KO and Trpa1 KO mice. Our results suggest that activation of TRPV4 by LPS in UCs regulates the proinflammatory response and contributes to LPS-induced increase in voiding frequency. These findings further support the concept that TRP channels are sensors of LPS, mediating fast innate immunity mechanisms against gram-negative bacteria.
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Affiliation(s)
- Yeranddy A Alpizar
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, VIB Center for Brain & Disease Research, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
| | - Pieter Uvin
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, VIB Center for Brain & Disease Research, Leuven, Belgium.,Laboratory of Organ System, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Robbe Naert
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, VIB Center for Brain & Disease Research, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
| | - Jan Franken
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, VIB Center for Brain & Disease Research, Leuven, Belgium.,Laboratory of Organ System, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Silvia Pinto
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, VIB Center for Brain & Disease Research, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
| | - Alicia Sanchez
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, VIB Center for Brain & Disease Research, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
| | - Thomas Gevaert
- Laboratory of Organ System, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Wouter Everaerts
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, VIB Center for Brain & Disease Research, Leuven, Belgium.,Laboratory of Organ System, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Thomas Voets
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, VIB Center for Brain & Disease Research, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
| | - Dirk De Ridder
- Laboratory of Organ System, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Karel Talavera
- Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, VIB Center for Brain & Disease Research, Leuven, Belgium.,VIB Center for Brain & Disease Research, Leuven, Belgium
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8
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Abolhasanpour N, Hajebrahimi S, Ebrahimi-Kalan A, Mehdipour A, Salehi-Pourmehr H. Urodynamic Parameters in Spinal Cord Injury-Induced Neurogenic Bladder Rats after Stem Cell Transplantation: A Narrative Review. IRANIAN JOURNAL OF MEDICAL SCIENCES 2020; 45:2-15. [PMID: 32038054 PMCID: PMC6983271 DOI: 10.30476/ijms.2019.45318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Neurogenic bladder (NGB) secondary to spinal cord injury (SCI) is accompanied with several complications such as urinary tract deterioration, urinary incontinence, and consequently lower quality of life (QoL),
significant morbidities, and occasionally death. Current therapeutic methods have some side effects and there is no treatment for the upper urinary tract injuries. Stem cell therapy is a promising method for
treating this condition. However, the best timing and the best route of its transplantation have not yet been determined. Animal models of SCI, especially in rats, are the most commonly used method for evaluating
the efficacy of cell therapy in NGB improvement, and the most common assessment method is the urodynamic studies (UDS). However, there are variations in the range of UDS parameters among the published studies.
The current review aimed to discuss the effect of stem cell transplantation on bladder dysfunction recovery based on urodynamic parameters after SCI in rats. For this purpose, the cell source, doses, the route
of administration, and the complete UDS equipment and its parameters were summarized in SCI models in rats. In some urodynamic test results, to some extent, an improvement in the lower urinary system function
was observed in each treatment group. However, this improvement was far from full functional recovery. The average cell dose was about 1 million cells in every injected site. In most studies, the stem cells (SCs)
were transplanted 9 days after the injury using PE-50 and PE-60. Many researchers have recommended further experimental and clinical studies to confirm this treatment modality.
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Affiliation(s)
- Nasrin Abolhasanpour
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Sakineh Hajebrahimi
- Research Center for Evidence Based-Medicine, Iranian EBM Centre: A Joanna Briggs Institute Affiliated Group, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Urology, Imam Reza Teaching Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abbas Ebrahimi-Kalan
- Department of Neurosciences and Cognitive, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahmad Mehdipour
- Department of Tissue Engineering, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hanieh Salehi-Pourmehr
- Research Center for Evidence Based-Medicine, Iranian EBM Centre: A Joanna Briggs Institute Affiliated Group, Tabriz University of Medical Sciences, Tabriz, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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9
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Talavera K, Startek JB, Alvarez-Collazo J, Boonen B, Alpizar YA, Sanchez A, Naert R, Nilius B. Mammalian Transient Receptor Potential TRPA1 Channels: From Structure to Disease. Physiol Rev 2019; 100:725-803. [PMID: 31670612 DOI: 10.1152/physrev.00005.2019] [Citation(s) in RCA: 218] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The transient receptor potential ankyrin (TRPA) channels are Ca2+-permeable nonselective cation channels remarkably conserved through the animal kingdom. Mammals have only one member, TRPA1, which is widely expressed in sensory neurons and in non-neuronal cells (such as epithelial cells and hair cells). TRPA1 owes its name to the presence of 14 ankyrin repeats located in the NH2 terminus of the channel, an unusual structural feature that may be relevant to its interactions with intracellular components. TRPA1 is primarily involved in the detection of an extremely wide variety of exogenous stimuli that may produce cellular damage. This includes a plethora of electrophilic compounds that interact with nucleophilic amino acid residues in the channel and many other chemically unrelated compounds whose only common feature seems to be their ability to partition in the plasma membrane. TRPA1 has been reported to be activated by cold, heat, and mechanical stimuli, and its function is modulated by multiple factors, including Ca2+, trace metals, pH, and reactive oxygen, nitrogen, and carbonyl species. TRPA1 is involved in acute and chronic pain as well as inflammation, plays key roles in the pathophysiology of nearly all organ systems, and is an attractive target for the treatment of related diseases. Here we review the current knowledge about the mammalian TRPA1 channel, linking its unique structure, widely tuned sensory properties, and complex regulation to its roles in multiple pathophysiological conditions.
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Affiliation(s)
- Karel Talavera
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Justyna B Startek
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Julio Alvarez-Collazo
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Brett Boonen
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Yeranddy A Alpizar
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Alicia Sanchez
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Robbe Naert
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Bernd Nilius
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven; VIB Center for Brain and Disease Research, Leuven, Belgium
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10
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Holmes GM, Hubscher CH, Krassioukov A, Jakeman LB, Kleitman N. Recommendations for evaluation of bladder and bowel function in pre-clinical spinal cord injury research. J Spinal Cord Med 2019; 43:165-176. [PMID: 31556844 PMCID: PMC7054945 DOI: 10.1080/10790268.2019.1661697] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Objective: In order to encourage the inclusion of bladder and bowel outcome measures in preclinical spinal cord injury (SCI) research, this paper identifies and categorizes 1) fundamental, 2) recommended, 3) supplemental and 4) exploratory sets of outcome measures for pre-clinical assessment of bladder and bowel function with broad applicability to animal models of SCI.Methods: Drawing upon the collective research experience of autonomic physiologists and informed in consultation with clinical experts, a critical assessment of currently available bladder and bowel outcome measures (histological, biochemical, in vivo functional, ex vivo physiological and electrophysiological tests) was made to identify the strengths, deficiencies and ease of inclusion for future studies of experimental SCI.Results: Based upon pre-established criteria generated by the Neurogenic Bladder and Bowel Working Group that included history of use in experimental settings, citations in the literature by multiple independent groups, ease of general use, reproducibility and sensitivity to change, three fundamental measures each for bladder and bowel assessments were identified. Briefly defined, these assessments centered upon tissue morphology, voiding efficiency/volume and smooth muscle-mediated pressure studies. Additional assessment measures were categorized as recommended, supplemental or exploratory based upon the balance between technical requirements and potential mechanistic insights to be gained by the study.Conclusion: Several fundamental assessments share reasonable levels of technical and material investment, including some that could assess bladder and bowel function non-invasively and simultaneously. Such measures used more inclusively across SCI studies would advance progress in this high priority area. When complemented with a few additional investigator-selected study-relevant supplemental measures, they are highly recommended for research programs investigating the efficacy of therapeutic interventions in preclinical animal models of SCI that have a bladder and/or bowel focus.
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Affiliation(s)
- Gregory M. Holmes
- Neural and Behavioral Sciences, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA,Correspondence to: Gregory M. Holmes, Neural and Behavioral Sciences, Pennsylvania State University College of Medicine, 500 University Dr., Hershey, PA 17036, USA. ;
| | - Charles H. Hubscher
- Department of Anatomical Sciences and Neurobiology, University of Louisville, Louisville, Kentucky, USA,Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, Kentucky, USA
| | - Andrei Krassioukov
- ICORD, University of British Columbia, GF Strong Rehabilitation Centre, Vancouver, Canada
| | - Lyn B. Jakeman
- National Institute of Neurological Disorders and Stroke, Bethesda, Maryland, USA
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11
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Effects of isocorynoxeine, from Uncaria, on lower urinary tract dysfunction caused by benign prostatic hyperplasia via antagonism of α1A-adrenoceptors. Toxicol Appl Pharmacol 2019; 376:95-106. [DOI: 10.1016/j.taap.2019.05.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 05/21/2019] [Accepted: 05/24/2019] [Indexed: 11/20/2022]
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12
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Lee S, Nedumaran B, Hypolite J, Caldwell B, Rudolph MC, Malykhina AP. Differential neurodegenerative phenotypes are associated with heterogeneous voiding dysfunction in a coronavirus-induced model of multiple sclerosis. Sci Rep 2019; 9:10869. [PMID: 31350464 PMCID: PMC6659655 DOI: 10.1038/s41598-019-47407-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 07/16/2019] [Indexed: 12/15/2022] Open
Abstract
Patients with multiple sclerosis (MS) develop a variety of lower urinary tract symptoms (LUTS). We previously characterized a murine model of neurogenic bladder dysfunction induced by a neurotropic strain of a coronavirus. In the present study, we further study the role of long-lasting neurodegeneration on the development of neurogenic bladder dysfunction in mice with corona-virus induced encephalitis (CIE). Long-term follow up study revealed three phenotypes of neurodegenerative symptom development: recovery (REC group), chronic progression (C-PRO group) and chronic disease with relapsing-remitting episodes (C-RELAP group). The levels of IL-1β in REC group, IL-10 in C-RELAP group, and IL-1β, IL-6, IL-10 and TNF-α in C-PRO group were diminished in the brain. The levels of TNF-α in REC group and INF-γ, IL-2, TGF-β and TNF-α in the C-PRO group were also diminished in the urinary bladder. Mice in C-RELAP group showed a delayed recovery of voiding function. In vitro contractility studies determined a decreased basal detrusor tone and reduced amplitude of nerve-mediated contractions in C-RELAP group, whereas C-PRO group had elevated muscle-mediated contractions. In conclusion, mice with CIE developed three phenotypes of neurologic impairment mimicking different types of MS progression in humans and showed differential mechanisms driving neurogenic bladder dysfunction.
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Affiliation(s)
- Sanghee Lee
- Department of Urology, University of California San Diego, La Jolla, California, USA
| | - Balachandar Nedumaran
- Division of Urology, Department of Surgery, University of Colorado Denver, Aurora, Co, USA
| | - Joseph Hypolite
- Division of Urology, Department of Surgery, University of Colorado Denver, Aurora, Co, USA
| | - Brian Caldwell
- Division of Urology, Department of Surgery, University of Colorado Denver, Aurora, Co, USA
| | - Michael C Rudolph
- Division of Endocrinology, Metabolism & Diabetes, University of Colorado Denver, Aurora, Co, USA
- NORC Metabolic and Cellular Analysis Core Center for Women's Health Research, University of Colorado Denver, Aurora, Co, USA
| | - Anna P Malykhina
- Division of Urology, Department of Surgery, University of Colorado Denver, Aurora, Co, USA.
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13
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Mickle AD, Won SM, Noh KN, Yoon J, Meacham KW, Xue Y, McIlvried LA, Copits BA, Samineni VK, Crawford KE, Kim DH, Srivastava P, Kim BH, Min S, Shiuan Y, Yun Y, Payne MA, Zhang J, Jang H, Li Y, Lai HH, Huang Y, Park SI, Gereau RW, Rogers JA. A wireless closed-loop system for optogenetic peripheral neuromodulation. Nature 2019; 565:361-365. [PMID: 30602791 PMCID: PMC6336505 DOI: 10.1038/s41586-018-0823-6] [Citation(s) in RCA: 236] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 11/14/2018] [Indexed: 11/18/2022]
Abstract
The fast-growing field of bioelectronic medicine aims to develop engineered systems that relieve clinical conditions through stimulation of the peripheral nervous system (PNS)1–5. Technologies of this type rely largely on electrical stimulation to provide neuromodulation of organ function or pain. One example is sacral nerve stimulation to treat overactive bladder, urinary incontinence and interstitial cystitis/bladder pain syndrome4,6,7. Conventional, continuous stimulation protocols, however, cause discomfort and pain, particularly when treating symptoms that can be intermittent in nature (e.g. sudden urinary urgency)8. Direct physical coupling of electrodes to the nerve can lead to injury and inflammation9–11. Furthermore, typical therapeutic stimulators target large nerve bundles that innervate multiple structures, resulting in a lack of organ specificity. This paper introduces a miniaturized bio-optoelectronic implant that avoids these limitations, via the use of (1) an optical stimulation interface that exploits microscale inorganic light emitting diodes (μ-ILEDs) to activate opsins, (2) a soft, precision biophysical sensor system that allows continuous measurements of organ function, and (3) a control module and data analytics approach that allows coordinated, closed-loop operation of the system to eliminate pathological behaviors as they occur in real-time. In an example reported here, a soft strain gauge yields real-time information on bladder function. Data analytics algorithms identify pathological behavior, and automated, closed-loop optogenetic neuromodulation of bladder sensory afferents normalize bladder function in the context of acute cystitis. This all-optical scheme for neuromodulation offers chronic stability and the potential for cell-type-specific stimulation.
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Affiliation(s)
- Aaron D Mickle
- Washington University Pain Center and Department of Anesthesiology, Washington University, St Louis, MO, USA.,Washington University School of Medicine, St Louis, MO, USA
| | - Sang Min Won
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Kyung Nim Noh
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Jangyeol Yoon
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Kathleen W Meacham
- Washington University Pain Center and Department of Anesthesiology, Washington University, St Louis, MO, USA.,Washington University School of Medicine, St Louis, MO, USA
| | - Yeguang Xue
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, USA.,Mechanical Engineering, Northwestern University, Evanston, IL, USA.,Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Lisa A McIlvried
- Washington University Pain Center and Department of Anesthesiology, Washington University, St Louis, MO, USA.,Washington University School of Medicine, St Louis, MO, USA
| | - Bryan A Copits
- Washington University Pain Center and Department of Anesthesiology, Washington University, St Louis, MO, USA.,Washington University School of Medicine, St Louis, MO, USA
| | - Vijay K Samineni
- Washington University Pain Center and Department of Anesthesiology, Washington University, St Louis, MO, USA.,Washington University School of Medicine, St Louis, MO, USA
| | - Kaitlyn E Crawford
- Department of Materials Science and Engineering, University of Central Florida, Orlando, FL, USA
| | - Do Hoon Kim
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Paulome Srivastava
- Washington University Pain Center and Department of Anesthesiology, Washington University, St Louis, MO, USA.,Washington University School of Medicine, St Louis, MO, USA
| | - Bong Hoon Kim
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,Materials Science and Engineering, Northwestern University, Evanston, IL, USA.,Simpson Querrey Institute, Northwestern University, Chicago, IL, USA.,Center for Bio-integrated Electronics, Northwestern University, Evanston, IL, USA
| | - Seunghwan Min
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Young Shiuan
- Washington University Pain Center and Department of Anesthesiology, Washington University, St Louis, MO, USA.,Washington University School of Medicine, St Louis, MO, USA
| | - Yeojeong Yun
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Maria A Payne
- Washington University School of Medicine, St Louis, MO, USA.,Washington University Department of Surgery - Division of Urologic Surgery, St Louis, MO, USA
| | - Jianpeng Zhang
- Institute of Solid Mechanics, Beihang University (BUAA), Beijing, China
| | - Hokyung Jang
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Yuhang Li
- Institute of Solid Mechanics, Beihang University (BUAA), Beijing, China
| | - H Henry Lai
- Washington University Pain Center and Department of Anesthesiology, Washington University, St Louis, MO, USA.,Washington University School of Medicine, St Louis, MO, USA.,Washington University Department of Surgery - Division of Urologic Surgery, St Louis, MO, USA
| | - Yonggang Huang
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, USA.,Mechanical Engineering, Northwestern University, Evanston, IL, USA.,Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Sung-Il Park
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA
| | - Robert W Gereau
- Washington University Pain Center and Department of Anesthesiology, Washington University, St Louis, MO, USA. .,Washington University School of Medicine, St Louis, MO, USA.
| | - John A Rogers
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA. .,Mechanical Engineering, Northwestern University, Evanston, IL, USA. .,Materials Science and Engineering, Northwestern University, Evanston, IL, USA. .,Simpson Querrey Institute, Northwestern University, Chicago, IL, USA. .,Center for Bio-integrated Electronics, Northwestern University, Evanston, IL, USA. .,Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA. .,Department of Chemistry, Northwestern University, Evanston, IL, USA. .,Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
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14
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Zhai K, Yang Z, Zhu X, Nyirimigabo E, Mi Y, Wang Y, Liu Q, Man L, Wu S, Jin J, Ji G. Activation of bitter taste receptors (tas2rs) relaxes detrusor smooth muscle and suppresses overactive bladder symptoms. Oncotarget 2018; 7:21156-67. [PMID: 27056888 PMCID: PMC5008275 DOI: 10.18632/oncotarget.8549] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 03/20/2016] [Indexed: 12/18/2022] Open
Abstract
Bitter taste receptors (TAS2Rs) are traditionally thought to be expressed exclusively on the taste buds of the tongue. However, accumulating evidence has indicated that this receptor family performs non-gustatory functions outside the mouth in addition to taste. Here, we examined the role of TAS2Rs in human and mouse detrusor smooth muscle (DSM). We showed that mRNA for various TAS2R subtypes was expressed in both human and mouse detrusor smooth muscle (DSM) at distinct levels. Chloroquine (CLQ), an agonist for TAS2Rs, concentration-dependently relaxed carbachol- and KCl-induced contractions of human DSM strips. Moreover, 100 μM of CLQ significantly inhibited spontaneous and electrical field stimulation (EFS)-induced contractions of human DSM strips. After a slight contraction, CLQ (1 mM) entirely relaxed carbachol-induced contraction of mouse DSM strips. Furthermore, denatonium and quinine concentration-dependently decreased carbachol-induced contractions of mouse DSM strips. Finally, we demonstrated that CLQ treatment significantly suppressed the overactive bladder (OAB) symptoms of mice with partial bladder outlet obstruction (PBOO). In conclusion, we for the first time provide evidence of the existence of TAS2Rs in the urinary DSM and demonstrate that TAS2Rs may represent a potential target for OAB. These findings open a new approach to develop drugs for OAB in the future.
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Affiliation(s)
- Kui Zhai
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Zhiguang Yang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xiaofei Zhu
- Department of Urology, Beijing Jishuitan Hospital, Beijing, China
| | - Eric Nyirimigabo
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yue Mi
- Department of Urology, National Research Center for Genitourinary Oncology, Peking University First Hospital and Institute of Urology, Beijing, China
| | - Yan Wang
- Department of Gastroenterology, Peking University First Hospital, Beijing, China
| | - Qinghua Liu
- Institute for Medical Biology, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Libo Man
- Department of Urology, Beijing Jishuitan Hospital, Beijing, China
| | - Shiliang Wu
- Department of Urology, National Research Center for Genitourinary Oncology, Peking University First Hospital and Institute of Urology, Beijing, China
| | - Jie Jin
- Department of Urology, National Research Center for Genitourinary Oncology, Peking University First Hospital and Institute of Urology, Beijing, China
| | - Guangju Ji
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
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15
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Ritter KE, Wang Z, Vezina CM, Bjorling DE, Southard-Smith EM. Serotonin Receptor 5-HT3A Affects Development of Bladder Innervation and Urinary Bladder Function. Front Neurosci 2017; 11:690. [PMID: 29311772 PMCID: PMC5732969 DOI: 10.3389/fnins.2017.00690] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 11/23/2017] [Indexed: 02/06/2023] Open
Abstract
The autonomic and sensory nervous systems are required for proper function of all visceral organs, including the lower urinary tract (LUT). Despite the wide prevalence of bladder dysfunction, effective treatment options remain limited. Pelvic innervation regenerative strategies are promising, but surprisingly little is known about the molecular factors driving the development of bladder innervation. Given prior evidence that serotonin receptor 5-HT3A is expressed early in LUT development and is an important mediator of adult bladder function, we sought to determine if 5-HT3A is required for the development of autonomic innervation of the bladder. We found that 5-HT3A is expressed early in fetal mouse pelvic ganglia and is maintained through adulthood. Htr3a knockout male mice, but not females, exhibit increased urinary voiding frequency compared to wild type littermates. Analysis of LUT function via anesthetized cystometry revealed decreased voiding efficiency in male Htr3a mutants. Htr3a−/− mutant animals exhibit a transient disturbance of autonomic neuronal subtype markers (tyrosine hydroxylase and choline acetyl transferase) within the fetal pelvic ganglia, although the imbalance of neuronal subtype markers assayed is no longer apparent in adulthood. Loss of 5-HT3A activity results in a higher density of autonomic and sensory neuronal fibers supplying bladder smooth muscle in both fetal and adult mice. Collectively, our findings highlight 5-HT3A as a critical component in the autonomic control of micturition and identify a novel role for this serotonin receptor in peripheral nervous system development.
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Affiliation(s)
- K Elaine Ritter
- Division of Genetic Medicine, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University, Nashville, TN, United States
| | - Zunyi Wang
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Chad M Vezina
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, United States
| | - Dale E Bjorling
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - E Michelle Southard-Smith
- Division of Genetic Medicine, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University, Nashville, TN, United States
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16
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Mann-Gow TK, Larson TR, Wøien CT, Andersen TM, Andersson KE, Zvara P. Evaluating the Procedure for Performing Awake Cystometry in a Mouse Model. J Vis Exp 2017. [PMID: 28570547 DOI: 10.3791/55588] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Awake filling cystometry has been used for a long time to evaluate bladder function in freely moving mice, however, the specific methods used, vary among laboratories. The goal of this study was to describe the microsurgical procedure used to implant an intravesical tube and the experimental technique for recording urinary bladder pressure in an awake, freely moving mouse. In addition, experimental data is presented to show how surgery, as well as tubing type and size, affect lower urinary tract function and recording sensitivity. The effect of tube diameter on pressure recording was assessed in both polyethylene and polyurethane tubing with different internal diameters. Subsequently, the best performing tube from both materials was surgically implanted into the dome of the urinary bladder of male C57BL/6 mice. Twelve-hour, overnight micturition frequency was recorded in healthy, intact animals and animals 2, 3, 5, and 7 days post-surgery. At harvest, bladders were assessed for signs of swelling using gross observation and were subsequently processed for pathological analysis. The greatest extent of bladder swelling was observed on day 2 and 3, which correlated with behavioral voiding data showing significantly impaired bladder function. By day 5, bladder histology and voiding frequency had normalized. Based on the literature and evidence provided by our studies, we propose the following steps for in vivo recording of intravesical pressure and voided volume in an awake mouse: 1) Perform the surgery using an operating microscope and microsurgical tools, 2) Use polyethylene-10 tubing to minimize movement artifacts, and 3) Perform cystometry on post-operative day 5, when bladder swelling resolves.
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Affiliation(s)
| | | | - Chrissie T Wøien
- Department of Urology and Biomedical Laboratory, University of Southern Denmark
| | - Thomas M Andersen
- Department of Urology and Biomedical Laboratory, University of Southern Denmark
| | - Karl-Erik Andersson
- Wake Forest Institute for Regenerative Medicine, Wake Forest University; Institute for Clinical Medicine, Aarhus University
| | - Peter Zvara
- Department of Surgery, University of Vermont; Department of Urology and Biomedical Laboratory, University of Southern Denmark;
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17
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Ito H, Pickering AE, Igawa Y, Kanai AJ, Fry CH, Drake MJ. Muro-Neuro-Urodynamics; a Review of the Functional Assessment of Mouse Lower Urinary Tract Function. Front Physiol 2017; 8:49. [PMID: 28220079 PMCID: PMC5292568 DOI: 10.3389/fphys.2017.00049] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 01/18/2017] [Indexed: 12/17/2022] Open
Abstract
Background: Mouse urodynamic tests are fundamental to understanding normal lower urinary tract (LUT) function. These experiments also contribute to our understanding of neurological dysfunction, pathophysiological processes, and potential mechanisms of therapy. Objectives: Systematic assessment of published evidence on urodynamics, advantages and limitations of different urodynamic measurements in mice, and consideration of potential implications for the clinical field. Methods: A search using specific search-terms for urodynamic studies and mice was conducted on PubMed (from inception to 1 July 2016). Results: We identified 55 studies examining or describing mouse neuro-urodynamics. We summarize reported features of mouse urodynamic function deriving from frequency-volume chart (FVC) measurements, voiding spot assays, filling cystometry, and pressure-flow studies. Similarly, an influence of the diurnal cycle on voiding is observed in mice and should be considered when interpreting rodent urodynamic studies, especially FVC measurements and voiding spot assays. Anaesthesia, restraint conditions, or filling rate influence mouse neuro-urodynamics. Mouse cystometric studies have observed intravesical pressure oscillations that accompany urine flow, attributed to high frequency opening and closing of the urethra. This characterization is not seen in other species, except rats. In contrast to human clinical urodynamics, the terminology of these examinations has not been standardized although many rodent urodynamic studies have been described. Conclusion: Mice have many anatomical and physiological similarities to humans and they are generally cost effective, and allow investigation of the effects of aging because of their short lifespan. There are some differences between mouse and human urodynamics. These must be considered when interpreting LUT function in mice, and translational value of murine disease models.
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Affiliation(s)
- Hiroki Ito
- Department of Physiology, Pharmacology and Neuroscience, University of Bristol Bristol, UK
| | - Anthony E Pickering
- Department of Physiology, Pharmacology and Neuroscience, University of Bristol Bristol, UK
| | - Yasuhiko Igawa
- Department of Continence Medicine, University of Tokyo Graduate School of Medicine Tokyo, Japan
| | - Anthony J Kanai
- Department of Pharmacology and Chemical Biology, University of Pittsburgh Pennsylvania, PA, USA
| | - Christopher H Fry
- Department of Physiology, Pharmacology and Neuroscience, University of Bristol Bristol, UK
| | - Marcus J Drake
- Department of Physiology, Pharmacology and Neuroscience, University of Bristol Bristol, UK
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18
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Central Control Circuit for Context-Dependent Micturition. Cell 2016; 167:73-86.e12. [PMID: 27662084 DOI: 10.1016/j.cell.2016.08.073] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 06/28/2016] [Accepted: 08/23/2016] [Indexed: 01/23/2023]
Abstract
Urine release (micturition) serves an essential physiological function as well as a critical role in social communication in many animals. Here, we show a combined effect of olfaction and social hierarchy on micturition patterns in adult male mice, confirming the existence of a micturition control center that integrates pro- and anti-micturition cues. Furthermore, we demonstrate that a cluster of neurons expressing corticotropin-releasing hormone (Crh) in the pontine micturition center (PMC) is electrophysiologically distinct from their Crh-negative neighbors and sends glutamatergic projections to the spinal cord. The activity of PMC Crh-expressing neurons correlates with and is sufficient to drive bladder contraction, and when silenced impairs micturition behavior. These neurons receive convergent input from widespread higher brain areas that are capable of carrying diverse pro- and anti-micturition signals, and whose activity modulates hierarchy-dependent micturition. Taken together, our results indicate that PMC Crh-expressing neurons are likely the integration center for context-dependent micturition behavior.
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19
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Role of PAR2 in the Development of Lower Urinary Tract Dysfunction. J Urol 2016; 196:588-98. [PMID: 26860791 DOI: 10.1016/j.juro.2016.01.106] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2016] [Indexed: 02/06/2023]
Abstract
PURPOSE Lower urinary tract symptoms are a common finding in patients with chronic prostatitis/chronic pelvic pain syndrome. We previously reported that the mast cell-tryptase-PAR2 (protease activated receptor 2) axis has a critical role in the development of chronic pain in experimental autoimmune prostatitis, a mouse model of chronic prostatitis/chronic pelvic pain syndrome. Therefore, we examined whether PAR2 activation mediates lower urinary tract dysfunction. MATERIALS AND METHODS Functional cystometry was done in male B6 mice along with immunoblotting and immunohistochemistry for the expression of COL1A1 (collagen type I α I) and α-SMA (α-smooth muscle actin). Flow cytometry analysis was performed on single cell suspensions of the prostate, bladder, lymph nodes and spleen. RESULTS Experimental autoimmune prostatitis resulted in increased urinary voiding frequency and decreased bladder capacity 30 days after initiation. Concurrently, there was increased expression of COL1A1 and α-SMA in the prostates and bladders. In contrast, induction of experimental autoimmune prostatitis in PAR2 knockout mice did not result in altered urodynamics or increased markers of fibrosis in the prostate or the bladder. Single cell suspensions of the prostate, bladder, lymph nodes and spleen demonstrated that in the absence of PAR2 cellular inflammatory mechanisms were still initiated in experimental autoimmune prostatitis but PAR2 expression may be required to maintain chronic inflammation. Finally, antibody mediated PAR2 neutralization normalized urinary voiding frequency and bladder capacity, and attenuated chronic pelvic pain. CONCLUSIONS PAR2 activation in the prostate may contribute to the development of lower urinary tract dysfunction through proinflammatory as well as profibrotic pathways.
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20
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Merrill L, Vizzard MA. Intravesical TRPV4 blockade reduces repeated variate stress-induced bladder dysfunction by increasing bladder capacity and decreasing voiding frequency in male rats. Am J Physiol Regul Integr Comp Physiol 2014; 307:R471-80. [PMID: 24965792 DOI: 10.1152/ajpregu.00008.2014] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Individuals with functional lower urinary tract disorders including interstitial cystitis (IC)/bladder pain syndrome (BPS) and overactive bladder (OAB) often report symptom (e.g., urinary frequency) worsening due to stress. One member of the transient receptor potential ion channel vanilloid family, TRPV4, has recently been implicated in urinary bladder dysfunction disorders including OAB and IC/BPS. These studies address the role of TRPV4 in stress-induced bladder dysfunction using an animal model of stress in male rats. To induce stress, rats were exposed to 7 days of repeated variate stress (RVS). Quantitative PCR data demonstrated significant (P ≤ 0.01) increases in TRPV4 transcript levels in urothelium but not detrusor smooth muscle. Western blot analyses of split urinary bladders (i.e., urothelium and detrusor) showed significant (P ≤ 0.01) increases in TRPV4 protein expression levels in urothelial tissues but not detrusor smooth muscle. We previously showed that RVS produces bladder dysfunction characterized by decreased bladder capacity and increased voiding frequency. The functional role of TRPV4 in RVS-induced bladder dysfunction was evaluated using continuous, open outlet intravesical infusion of saline in conjunction with administration of a TRPV4 agonist, GSK1016790A (3 μM), a TRPV4 antagonist, HC067047 (1 μM), or vehicle (0.1% DMSO in saline) in control and RVS-treated rats. Bladder capacity, void volume, and intercontraction interval significantly decreased following intravesical instillation of GSK1016790A in control rats and significantly (P ≤ 0.01) increased following administration of HC067047 in RVS-treated rats. These results demonstrate increased TRPV4 expression in the urothelium following RVS and that TRPV4 blockade ameliorates RVS-induced bladder dysfunction consistent with the role of TRPV4 as a promising target for bladder function disorders.
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Affiliation(s)
- Liana Merrill
- Department of Neurological Sciences, University of Vermont College of Medicine, Burlington, Vermont
| | - Margaret A Vizzard
- Department of Neurological Sciences, University of Vermont College of Medicine, Burlington, Vermont
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Boudes M, Uvin P, Pinto S, Freichel M, Birnbaumer L, Voets T, De Ridder D, Vennekens R. Crucial role of TRPC1 and TRPC4 in cystitis-induced neuronal sprouting and bladder overactivity. PLoS One 2013; 8:e69550. [PMID: 23922735 PMCID: PMC3726658 DOI: 10.1371/journal.pone.0069550] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 06/10/2013] [Indexed: 12/30/2022] Open
Abstract
PURPOSE During cystitis, increased innervation of the bladder by sensory nerves may contribute to bladder overactivity and pain. The mechanisms whereby cystitis leads to hyperinnervation of the bladder are, however, poorly understood. Since TRP channels have been implicated in the guidance of growth cones and survival of neurons, we investigated their involvement in the increases in bladder innervation and bladder activity in rodent models of cystitis. MATERIALS AND METHODS To induce bladder hyperactivity, we chronically injected cyclophosphamide in rats and mice. All experiments were performed a week later. We used quantitative transcriptional analysis and immunohistochemistry to determine TRP channel expression on retrolabelled bladder sensory neurons. To assess bladder function and referred hyperalgesia, urodynamic analysis, detrusor strip contractility and Von Frey filament experiments were done in wild type and knock-out mice. RESULTS Repeated cyclophosphamide injections induce a specific increase in the expression of TRPC1 and TRPC4 in bladder-innervating sensory neurons and the sprouting of sensory fibers in the bladder mucosa. Interestingly, cyclophosphamide-treated Trpc1/c4(-/-) mice no longer exhibited increased bladder innervations, and, concomitantly, the development of bladder overactivity was diminished in these mice. We did not observe a difference neither in bladder contraction features of double knock-out animals nor in cyclophosphamide-induced referred pain behavior. CONCLUSIONS Collectively, our data suggest that TRPC1 and TRPC4 are involved in the sprouting of sensory neurons following bladder cystitis, which leads to overactive bladder disease.
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Affiliation(s)
- Mathieu Boudes
- Laboratory of Experimental Urology, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
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Merrill L, Malley S, Vizzard MA. Repeated variate stress in male rats induces increased voiding frequency, somatic sensitivity, and urinary bladder nerve growth factor expression. Am J Physiol Regul Integr Comp Physiol 2013; 305:R147-56. [PMID: 23657640 DOI: 10.1152/ajpregu.00089.2013] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Stress exacerbates symptoms of functional lower urinary tract disorders including interstitial cystitis (IC)/bladder pain syndrome (BPS) and overactive bladder (OAB) in humans, but mechanisms contributing to symptom worsening are unknown. These studies address stress-induced changes in the structure and function of the micturition reflex using an animal model of stress in male rats. Rats were exposed to 7 days of repeated variate stress (RVS). Target organ (urinary bladder, thymus, adrenal gland) tissues were collected and weighed following RVS. Evans blue (EB) concentration and histamine, myeloperoxidase (MPO), nerve growth factor (NGF), brain-derived neurotropic factor (BDNF), and CXCL12 protein content (ELISA) were measured in the urinary bladder, and somatic sensitivity of the hindpaw and pelvic regions was determined following RVS. Bladder function was evaluated using continuous, open outlet intravesical infusion of saline in conscious rats. Increases in body weight gain were significantly (P ≤ 0.01) attenuated by day 5 of RVS, and adrenal weight was significantly (P ≤ 0.05) increased. Histamine, MPO, NGF, and CXCL12 protein expression was significantly (P ≤ 0.01) increased in the urinary bladder after RVS. Somatic sensitivity of the hindpaw and pelvic regions was significantly (P ≤ 0.01) increased at all monofilament forces tested (0.1-4 g) after RVS. Intercontraction interval, infused volume, and void volume were significantly (P ≤ 0.01) decreased after RVS. These studies demonstrate increased voiding frequency, histamine, MPO, NGF, and CXCL12 bladder content and somatic sensitivity after RVS suggesting an inflammatory component to stress-induced changes in bladder function and somatic sensitivity.
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Affiliation(s)
- Liana Merrill
- Department of Neurological Sciences, University of Vermont College of Medicine, Burlington, VT, USA
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Boudes M, Uvin P, Pinto S, Voets T, Fowler CJ, Wenning GK, De Ridder D, Stefanova N. Bladder dysfunction in a transgenic mouse model of multiple system atrophy. Mov Disord 2013; 28:347-55. [PMID: 23426727 DOI: 10.1002/mds.25336] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 11/26/2012] [Accepted: 11/29/2012] [Indexed: 11/11/2022] Open
Abstract
Multiple system atrophy (MSA) is an adult-onset neurodegenerative disorder presenting with motor impairment and autonomic dysfunction. Urological function is altered in the majority of MSA patients, and urological symptoms often precede the motor syndrome. To date, bladder function and structure have never been investigated in MSA models. We aimed to test bladder function in a transgenic MSA mouse featuring oligodendroglial α-synucleinopathy and define its applicability as a preclinical model to study urological failure in MSA. Experiments were performed in proteolipid protein (PLP)-human α-synuclein (hαSyn) transgenic and control wild-type mice. Diuresis, urodynamics, and detrusor strip contractility were assessed to characterize the urological phenotype. Bladder morphology and neuropathology of the lumbosacral intermediolateral column and the pontine micturition center (PMC) were analyzed in young and aged mice. Urodynamic analysis revealed a less efficient and unstable bladder in MSA mice with increased voiding contraction amplitude, higher frequency of nonvoiding contractions, and increased postvoid residual volume. MSA mice bladder walls showed early detrusor hypertrophy and age-related urothelium hypertrophy. Transgenic hαSyn expression was detected in Schwann cells ensheathing the local nerve fibers in the lamina propria and muscularis of MSA bladders. Early loss of parasympathetic outflow neurons and delayed degeneration of the PMC accompanied the urological deficits in MSA mice. PLP-hαSyn mice recapitulate major urological symptoms of human MSA that may be linked to αSyn-related central and peripheral neuropathology and can be further used as a preclinical model to decipher pathomechanisms of MSA.
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Affiliation(s)
- Mathieu Boudes
- Laboratory of Biomarkers, Screening and Diagnosis, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
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