1
|
Saito T, Tyagi P, Minagawa T, Ogawa T, Ishizuka O, Yoshimura N. Intravesical nerve growth factor antisense therapy for bladder hypersensitivity induced by psychological stress. Gene Ther 2024:10.1038/s41434-024-00484-8. [PMID: 39223380 DOI: 10.1038/s41434-024-00484-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 08/14/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024]
Abstract
This study assessed the relationship between NGF expression in the bladder and bladder hypersensitivity caused by psychological stress using water avoidance stress (WAS) in rats by modulating the NGF expression using intravesical liposome-complexed NGF antisense oligonucleotide (OND) therapy on WAS-induced bladder dysfunction. Female Wistar rats were divided into control and WAS groups, the latter of which received WAS sessions for 10 days with or without the OND pretreatment. Rats underwent cystometry with or without intravesical application of low-dose protamine sulfate (LD-PS), or pain behavior measurements after LD-PS application. After functional evaluations, the bladder was harvested for histology and molecular studies. WAS rats with or without LD-PS showed shortened intercontraction intervals and increased pain behaviors compared to control rats, which was improved by OND-treatment. Histological studies revealed that LD-PS provoked urothelial exfoliation in WAS rats. Compared to controls, protein assay showed increased NGF levels, and RT-PCR showed increases of TRPV1 and TRPA1 and a decrease in Cx43 in WAS rat bladders, which were improved by OND-treatment. WAS caused bladder hypersensitivity, which was improved by NGF antisense OND treatment. NGF upregulation in the bladder may be a therapeutic target for the treatment of psychological stress-induced bladder dysfunction.
Collapse
Affiliation(s)
- Tetsuichi Saito
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Urology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Pradeep Tyagi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Tomonori Minagawa
- Department of Urology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Teruyuki Ogawa
- Department of Urology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Osamu Ishizuka
- Department of Urology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Naoki Yoshimura
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
| |
Collapse
|
2
|
Chen H, Hoi MPM, Lee SMY. Medicinal plants and natural products for treating overactive bladder. Chin Med 2024; 19:56. [PMID: 38532487 DOI: 10.1186/s13020-024-00884-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/02/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND Overactive bladder (OAB) presents a high prevalence of 16-18% worldwide. The pathophysiology of OAB is still poorly understood while effective therapy or countermeasure are very limited. On the other hand, medicinal plants and herbal remedies have been utilized for treating lower urinary tract symptoms (LUTS) in both Eastern and Western cultures since ancient times. In recent years, accumulating progress has also been made in OAB treatment research by using medicinal plants. METHODS Relevant literature on the studies of medicinal plants and herbs used to treat OAB was reviewed. The medicinal plants were summarized and categorized into two groups, single-herb medications and herbal formulations. RESULTS The present review has summarized current understanding of OAB's pathophysiology, its available treatments and new drug targets. Medicinal plants and natural products which have been used or have shown potential for OAB treatment were updated and comprehensively categorized. Studies on a wide variety of medicinal plants showed promising results, although only a few phytochemicals have been isolated and identified. Until now, none of these herbal compounds have been further developed into clinical therapeutics for OAB. CONCLUSIONS This review provides the basis for discovering and designing new phytopharmaceutical candidates with effective and well-tolerated properties to treat OAB. Increasing evidences indicate new strategies with alternative herbal treatment for OAB have high efficacy and safety, showing great promise for their clinical use. Future studies in a rigorously designed controlled manner will be beneficial to further support the eligibility of herbal treatment as OAB therapeutics.
Collapse
Affiliation(s)
- Huanxian Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Science, University of Macau, Macao, China
| | - Maggie Pui Man Hoi
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Science, University of Macau, Macao, China
- Department of Pharmaceutical Sciences, Faculty of Health Sciences, University of Macau, Macao, China
| | - Simon Ming Yuen Lee
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Science, University of Macau, Macao, China.
- Department of Pharmaceutical Sciences, Faculty of Health Sciences, University of Macau, Macao, China.
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong, China.
| |
Collapse
|
3
|
Szallasi A. Resiniferatoxin: Nature's Precision Medicine to Silence TRPV1-Positive Afferents. Int J Mol Sci 2023; 24:15042. [PMID: 37894723 PMCID: PMC10606200 DOI: 10.3390/ijms242015042] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/27/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023] Open
Abstract
Resiniferatoxin (RTX) is an ultrapotent capsaicin analog with a unique spectrum of pharmacological actions. The therapeutic window of RTX is broad, allowing for the full desensitization of pain perception and neurogenic inflammation without causing unacceptable side effects. Intravesical RTX was shown to restore continence in a subset of patients with idiopathic and neurogenic detrusor overactivity. RTX can also ablate sensory neurons as a "molecular scalpel" to achieve permanent analgesia. This targeted (intrathecal or epidural) RTX therapy holds great promise in cancer pain management. Intra-articular RTX is undergoing clinical trials to treat moderate-to-severe knee pain in patients with osteoarthritis. Similar targeted approaches may be useful in the management of post-operative pain or pain associated with severe burn injuries. The current state of this field is reviewed, from preclinical studies through veterinary medicine to clinical trials.
Collapse
Affiliation(s)
- Arpad Szallasi
- Department of Pathology and Experimental Cancer Research, Semmelweis University, 1083 Budapest, Hungary
| |
Collapse
|
4
|
Hayashi N, Kawamorita N, Ishizuka Y, Kimura S, Satake Y, Ito A. Ectopic endometriosis in the pelvic cavity evokes bladder hypersensitivity via transient receptor potential ankyrin 1 hyperexpression in rats. Int Urogynecol J 2022:10.1007/s00192-022-05335-x. [PMID: 36040506 DOI: 10.1007/s00192-022-05335-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 07/23/2022] [Indexed: 11/26/2022]
Abstract
INTRODUCTION AND HYPOTHESIS In women with chronic pelvic pain (CPP), interstitial cystitis/bladder pain syndrome (IC/BPS) and endometriosis frequently coexist. The mechanism of these diseases coexisting is explained by cross-sensitization between endometriosis and IC/BPS. The overlapped symptoms may be related to cross-sensitization with transient receptor potential vanilloid 1 (TRPV1) and/or transient receptor potential ankyrin 1 (TRPA1) hyperexpression. This study was aimed at exploring whether bladder hypersensitivity is evoked in the surgically induced ectopic endometriosis rat and whether TRPV1 and/or TRPA1 play a vital role. METHODS A total of 63 Sprague-Dawley female rats were divided into two groups, 39 for physiological examination and 24 for molecular analysis. Surgical induction of ectopic endometriosis (ENDO, n=27), surgical sham treatment (n=18), and treatment for endometriosis by GnRH analog (ENDO-G) (n=18) were performed. Bladder function was investigated by cystometry (for TRPV1 in the sham [n=6] and ENDO [n=9] groups and for TRPA1 in the sham [n=6], ENDO [n=9], and ENDO+G [n=9] groups), and TRPV1 and TRPA1 mRNA expressions were measured using real-time qPCR in the bladder and dorsal root ganglia (DRGs). RESULTS On cystometry, the relative intercontraction interval (ICI) after/before resiniferatoxin (RTx; TRPV1 activator) infusion to the bladder showed no significant difference between the two groups, whereas relative ICI after/before allyl isothiocyanate (AITC; TRPA1 activator) infusion was significantly lower in the ENDO group than in the sham group. TRPA1 mRNA expression in the bladder and L5 DRG was considerably higher in the ENDO group than in the sham group on real-time qPCR. TRPA1 mRNA hyperexpression and bladder hypersensitivity after AITC infusion were reduced in the ENDO-G group. CONCLUSIONS Bladder cross-sensitization in ENDO rats occurs in association with hyperexpression of TRPA1 at both the DRG and the bladder mucosa. This can be understood by the "cross-sensitization of endometriosis to bladder" theory explaining overlapping symptoms among BPS/IC and ectopic endometriosis.
Collapse
Affiliation(s)
- Natsuho Hayashi
- Department of Urology, Tohoku Graduate School of Medicine, 1-1 Seiryo-machi, Aobaku, Sendai, 980-8574, Japan
| | - Naoki Kawamorita
- Department of Urology, Tohoku Graduate School of Medicine, 1-1 Seiryo-machi, Aobaku, Sendai, 980-8574, Japan.
| | - Yuichi Ishizuka
- Department of Urology, Tohoku Graduate School of Medicine, 1-1 Seiryo-machi, Aobaku, Sendai, 980-8574, Japan
| | - Shingo Kimura
- Department of Urology, Tohoku Graduate School of Medicine, 1-1 Seiryo-machi, Aobaku, Sendai, 980-8574, Japan
| | - Yohei Satake
- Department of Urology, Tohoku Graduate School of Medicine, 1-1 Seiryo-machi, Aobaku, Sendai, 980-8574, Japan
| | - Akihiro Ito
- Department of Urology, Tohoku Graduate School of Medicine, 1-1 Seiryo-machi, Aobaku, Sendai, 980-8574, Japan
| |
Collapse
|
5
|
Tabata H, Sasaki M, Kataoka-Sasaki Y, Shinkai N, Ichihara K, Masumori N, Kocsis JD, Honmou O. Possible role of intravenous administration of mesenchymal stem cells to alleviate interstitial cystitis/bladder pain syndrome in a Toll-like receptor-7 agonist-induced experimental animal model in rat. BMC Urol 2021; 21:156. [PMID: 34774029 PMCID: PMC8590770 DOI: 10.1186/s12894-021-00923-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 11/08/2021] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Interstitial cystitis/bladder pain syndrome (IC/BPS) categorized with and without Hunner lesions is a condition that displays chronic pelvic pain related to the bladder with no efficacious treatment options. There are strong associations suggested between Hunner-type IC and autoimmune diseases. Recently, we established an animal model of Hunner-type IC using a Toll-like receptor-7 (TLR7) agonist. Intravenous infusion of mesenchymal stem cells (MSCs) can be used to treat injury via multimodal and orchestrated therapeutic mechanisms including anti-inflammatory effects. Here, we investigated whether infused MSCs elicit therapeutic efficacy associated with the TLR7-related anti-inflammatory pathway in our Hunner-type IC model. METHODS Voiding behaviors were monitored 24 h prior to the Loxoribine (LX), which is a TLR7 agonist instillation in order to establish a Hunner-type IC model (from - 24 to 0 h) in female Sprague-Dawley rats. LX was instilled transurethrally into the bladder. At 0 h, the initial freezing behavior test confirmed that no freezing behavior was observed in any of the animals. The LX-instilled animals were randomized. Randomized LX-instilled rats were intravenously infused with MSCs or with vehicle through the right external jugular vein. Sampling tissue for green fluorescent protein (GFP)-positive MSCs were carried out at 48 h. Second voiding behavior tests were monitored from 72 to 96 h. After the final evaluation of the freezing behavior test at 96 h after LX instillation (72 h after MSC or vehicle infusion), histological evaluation with H&E staining and quantitative real-time polymerase chain reaction (RT-PCR) to analyze the mRNA expression levels of inflammatory cytokines were performed. RESULTS Freezing behavior was reduced in the MSC group, and voiding behavior in the MSC group did not deteriorate. Hematoxylin-eosin staining showed that mucosal edema, leukocyte infiltration, and hemorrhage were suppressed in the MSC group. The relative expression of interferon-β mRNA in the bladder of the MSC group was inhibited. Numerous GFP-positive MSCs were distributed mainly in the submucosal and mucosal layers of the inflammatory bladder wall. CONCLUSION Intravenous infusion of MSCs may have therapeutic efficacy in a LX-instilled Hunner-type IC rat model via a TLR7-related anti-inflammatory pathway.
Collapse
Affiliation(s)
- Hidetoshi Tabata
- Department of Urology, Sapporo Medical University School of Medicine, Sapporo, 060-8556, Japan
| | - Masanori Sasaki
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, 060-8556, Japan.
- Department of Neurology, Yale University School of Medicine, New Haven, CT, 06510, USA.
- Center for Neuroscience and Regeneration Research, VA Connecticut Healthcare System, West Haven, CT, 06516, USA.
| | - Yuko Kataoka-Sasaki
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, 060-8556, Japan
| | - Nobuo Shinkai
- Department of Urology, Sapporo Medical University School of Medicine, Sapporo, 060-8556, Japan
| | - Koji Ichihara
- Department of Urology, Sapporo Medical University School of Medicine, Sapporo, 060-8556, Japan
| | - Naoya Masumori
- Department of Urology, Sapporo Medical University School of Medicine, Sapporo, 060-8556, Japan
| | - Jeffery D Kocsis
- Department of Neurology, Yale University School of Medicine, New Haven, CT, 06510, USA
- Center for Neuroscience and Regeneration Research, VA Connecticut Healthcare System, West Haven, CT, 06516, USA
| | - Osamu Honmou
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, 060-8556, Japan
- Department of Neurology, Yale University School of Medicine, New Haven, CT, 06510, USA
- Center for Neuroscience and Regeneration Research, VA Connecticut Healthcare System, West Haven, CT, 06516, USA
| |
Collapse
|
6
|
Nakagawa T, Akimoto N, Hakozaki A, Noma T, Nakamura A, Hayashi Y, Sasaki E, Ozaki N, Furue H. Responsiveness of lumbosacral superficial dorsal horn neurons during the voiding reflex and functional loss of spinal urethral-responsive neurons in streptozotocin-induced diabetic rats. Neurourol Urodyn 2019; 39:144-157. [PMID: 31663175 DOI: 10.1002/nau.24198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 09/23/2019] [Indexed: 12/20/2022]
Abstract
AIMS Sensory information from the lower urinary tract (LUT) is conveyed to the spinal cord to trigger and co-ordinate micturition. However, it is not fully understood how spinal dorsal horn neurons are excited during the voiding reflex. In this study, we developed an in vivo technique allowing recording of superficial dorsal horn (SDH) neurons concurrent with intravesical pressure (IVP) during the micturition cycle in both normal and diabetic rats. METHODS Lumbosacral dorsal horn neuronal activity and IVP were recorded from urethane-anesthetized naive and streptozotocin (STZ)-induced diabetic rats. Saline was continuously perfused into the urinary bladder through a cannula to induce micturition. RESULTS We classified SDH neurons into bladder- and urethral-responsive neurons, based on their responsiveness during the voiding reflex. Bladder-responsive SDH neurons responded to the rapid increase in IVP at the start of voiding. In contrast, urethral-responsive SDH neuronal firing increased at the peak IVP and their firing lasted during the voiding phase (the high-frequency oscillations). Urethral-responsive SDH neurons were more sensitive to capsaicin, received C afferent fiber inputs, and were rarely detected in STZ-diabetes rats. Administration of a cyclohexenoic long-chain fatty alcohol (TAC-302), which is reported to promote neurite outgrowth of peripheral nerves in STZ-diabetic rats, prevented the functional loss of spinal urethral response. CONCLUSIONS Sensory information from the bladder and urethra is conveyed separately to different groups of SDH neurons. Functional loss of spinal urethral sensory information through unmyelinated C afferent fibers may contribute to diabetic bladder dysfunction.
Collapse
Affiliation(s)
- Tatsuki Nakagawa
- Department of Neurophysiology, Hyogo College of Medicine, Nishinomiya, Japan.,Department of Functional Anatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan.,Department of Information Physiology, National Institute for Physiological Sciences, Okazaki, Japan
| | - Nozomi Akimoto
- Department of Information Physiology, National Institute for Physiological Sciences, Okazaki, Japan
| | - Atsushi Hakozaki
- Department of Information Physiology, National Institute for Physiological Sciences, Okazaki, Japan.,Drug Discovery and Development II, Taiho Pharmaceutical Co. Ltd, Tsukuba, Japan
| | - Takahisa Noma
- Drug Discovery and Development II, Taiho Pharmaceutical Co. Ltd, Tsukuba, Japan
| | - Ayumi Nakamura
- Department of Neurophysiology, Hyogo College of Medicine, Nishinomiya, Japan.,Department of Information Physiology, National Institute for Physiological Sciences, Okazaki, Japan
| | - Yukio Hayashi
- Drug Discovery and Development II, Taiho Pharmaceutical Co. Ltd, Tsukuba, Japan
| | - Eiji Sasaki
- Drug Discovery and Development II, Taiho Pharmaceutical Co. Ltd, Tsukuba, Japan
| | - Noriyuki Ozaki
- Department of Functional Anatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Hidemasa Furue
- Department of Neurophysiology, Hyogo College of Medicine, Nishinomiya, Japan.,Department of Information Physiology, National Institute for Physiological Sciences, Okazaki, Japan
| |
Collapse
|
7
|
Majima T, Mori K, Kadekawa K, Takai S, Funahashi Y, Reinhart B, Goins WF, Gotoh M, Glorioso JC, Yoshimura N. The effect of herpes simplex virus vector‐mediated gene therapy of
protein phosphatase 1α
on bladder overactivity and nociception. Neurourol Urodyn 2018; 38:582-590. [DOI: 10.1002/nau.23882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 09/30/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Tsuyoshi Majima
- Department of UrologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
- Department of UrologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Kenichi Mori
- Department of UrologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Katsumi Kadekawa
- Department of UrologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Shun Takai
- Department of UrologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
- Department of UrologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Yasuhito Funahashi
- Department of UrologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Bonnie Reinhart
- Departments of Microbiology and Molecular GeneticsUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - William F. Goins
- Departments of Microbiology and Molecular GeneticsUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Momokazu Gotoh
- Department of UrologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Joseph C. Glorioso
- Departments of Microbiology and Molecular GeneticsUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| | - Naoki Yoshimura
- Department of UrologyUniversity of Pittsburgh School of MedicinePittsburghPennsylvania
| |
Collapse
|
8
|
Majima T, Funahashi Y, Kawamorita N, Takai S, Matsukawa Y, Yamamoto T, Yoshimura N, Gotoh M. Role of microglia in the spinal cord in colon-to-bladder neural crosstalk in a rat model of colitis. Neurourol Urodyn 2018; 37:1320-1328. [PMID: 29350427 DOI: 10.1002/nau.23484] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 12/12/2017] [Indexed: 12/11/2022]
Abstract
AIMS We investigated whether spinal cord microglia are involved in colon-to-bladder neural crosstalk in a rat model of colitis. METHODS Adult female SD rats were divided into A) control, B) colitis, and C) colitis + minocycline groups. Experimental colitis was induced by administering 50% trinitrobenzene sulfonic acid into the distal colon in the colitis group and the minocycline group. Minocycline, a microglial inhibitor, was continuously infused into the intrathecal space in the minocycline group. The following investigations were performed on day 7: (1) continuous cystometry (CMG) in an awake condition; (2) nociceptive behavior observation induced by intravesical instillation of resiniferatoxin; (3) toluidine blue staining in the bladder; (4) Immunofluorescence staining for the microglial marker, CD11b, in L6 spinal cord sections; and (5) quantitative RT-PCR to investigate interleukin-1β (IL-1β), chemokine ligand 3 (CCL3), and brain-derived neurotrophic factor (BDNF) gene expression in the L6 spinal cord. RESULTS In comparison with the control group, the colitis group showed significant increases in (1) micturition frequency during cystometry; (2) resiniferatoxin-induced freezing behavior (bladder pain); (3) the number of total and degranulated mast cells in the bladder; (4) the number of microglia in the L6 spinal cord, and (5) the expression of IL-1β, CCL3, and BDNF mRNA in the L6 spinal cord. Moreover, intrathecal administration of minocycline alleviated these pathophysiological findings caused by experimental colitis. CONCLUSIONS Spinal microglia may play an important role in colitis-induced bladder overactivity and enhanced bladder pain sensitivity in colitis rats.
Collapse
Affiliation(s)
- Tsuyoshi Majima
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuhito Funahashi
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoki Kawamorita
- Department of Urology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shun Takai
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshihisa Matsukawa
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tokunori Yamamoto
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoki Yoshimura
- Departments of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Momokazu Gotoh
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
9
|
Lee WC, Liu YL. Traditional Chinese medicine and herbal supplements for treating overactive bladder. UROLOGICAL SCIENCE 2018. [DOI: 10.4103/uros.uros_8_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
10
|
Wallace SL, Kelley RS, Mehta S, Descalzi G, Fantl JA, Ascher‐Walsh C. Transdermal light neuromodulation: Optogenetics in the murine urinary tract. Neurourol Urodyn 2017; 37:1281-1285. [DOI: 10.1002/nau.23458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 10/04/2017] [Indexed: 01/23/2023]
Affiliation(s)
- Shannon L. Wallace
- Department of Gynecology and ObstetricsIcahn School of Medicine at Mount SinaiNew YorkNew York
| | - Robert S. Kelley
- Department of Gynecology and ObstetricsEmory University School of MedicineAtlantaGeorgia
| | - Shailja Mehta
- Department of Gynecology and ObstetricsIcahn School of Medicine at Mount SinaiNew YorkNew York
| | - Giannina Descalzi
- Department of NeuroscienceIcahn School of Medicine Mount SinaiNew YorkNew York
| | - John A. Fantl
- Department of Gynecology and ObstetricsIcahn School of Medicine at Mount SinaiNew YorkNew York
| | - Charles Ascher‐Walsh
- Department of Gynecology and ObstetricsIcahn School of Medicine at Mount SinaiNew YorkNew York
| |
Collapse
|
11
|
Effects of herpes simplex virus vectors encoding poreless TRPV1 or protein phosphatase 1α in a rat cystitis model induced by hydrogen peroxide. Gene Ther 2017; 25:20-26. [PMID: 29057994 PMCID: PMC5814327 DOI: 10.1038/gt.2017.94] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 08/30/2017] [Accepted: 09/29/2017] [Indexed: 02/08/2023]
Abstract
Enhanced afferent excitability is considered to be an important pathophysiological basis of interstitial cystitis/bladder pain syndrome (IC/BPS). In addition, transient receptor potential vanilloid-1 (TRPV1) receptors are known to be involved in afferent sensitization. Animals with hydrogen peroxide (HP)-induced cystitis have been used as a model exhibiting pathologic characteristics of chronic inflammatory condition of the bladder. This study investigated the effect of gene therapy with replication-defective herpes simplex virus (HSV) vectors encoding poreless TRPV1 (PL) or protein phosphatase 1 α (PP1α), a negative regulator of TRPV1, using a HP-induced rat model of cystitis. HSV vectors encoding green fluorescent protein, PL or PP1α were inoculated into the bladder wall of female rats. After 1 week, 1% HP or normal saline was administered into the bladder, and the evaluations were performed 2 weeks after viral inoculation. In HP-induced cystitis rats, gene delivery of PL or PP1α decreased pain behavior as well as a reduction in the intercontraction interval. Also, both treatments reduced nerve growth factor expression in the bladder mucosa, reduced bladder inflammation characterized by infiltration of inflammatory cells and increased bladder weight. Taken together, HSV-mediated gene therapy targeting TRPV1 receptors could be effective for the treatment of IC/BPS.
Collapse
|
12
|
Majima T, Tyagi P, Dogishi K, Kashyap M, Funahashi Y, Gotoh M, Chancellor MB, Yoshimura N. Effect of Intravesical Liposome-Based Nerve Growth Factor Antisense Therapy on Bladder Overactivity and Nociception in a Rat Model of Cystitis Induced by Hydrogen Peroxide. Hum Gene Ther 2017; 28:598-609. [PMID: 28446032 DOI: 10.1089/hum.2016.121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The aim of this study was to evaluate whether liposome-based local suppression of nerve growth factor (NGF) in the bladder has effects on bladder hypersensitivity in a rat cystitis model induced by intravesical instillation of hydrogen peroxide (HP). HP (1.5%) was intravesically administered to adult female Sprague-Dawley rats. Liposomes complexed with NGF antisense oligonucleotide (OND) labeled with TYE563 fluorescent tag were intravesically instilled on day 2. Red fluorescence from the TYE 563 tag was observed with fluorescent microscopy on day 3. Four separate groups of rats were used in the following experiments: (a) sham-liposome group, (b) sham-OND group, (c) cystitis-liposome group, and (d) cystitis-OND group. Saline or 1.5% HP was intravesically administered on day 0. Empty liposomes or liposomes-antisense OND were instilled into the bladder on day 2. The following experiments were conducted to evaluate the effect of NGF antisense treatment on day 7: (a) continuous cystometry was performed in an awake condition; (b) pain behavior induced by instillation of resiniferatoxin into the bladder, including licking behavior (lower abdominal licking) and freezing behavior (motionless head-turning toward lower abdomen), was observed; (c) immunohistochemical staining of the bladder and L6 DRG for NGF was performed; (d) the expression of several genes in the bladder was analyzed by reverse transcription polymerase chain reaction (RT-PCR); and (e) after Fast Blue was injected into the bladder wall, Fast Blue-positive or -negative cells in DRG neurons were separately collected by using a laser-capture microdissection method 7 days later. RT-PCR was performed to evaluate gene expressions in captured neuronal cells. The expression of TYE563 was identified only in the urothelial layer. In cystometric investigation, intercontraction intervals (ICI) were significantly (p = 0.001) shorter in the cystitis-liposome group in comparison to the sham-liposome group. ICI was significantly (p = 0.007) longer in the cystitis-OND group compared to the cystitis-liposome group. Comparisons of the sham-liposome and the sham-OND groups showed no significant difference in ICI (p = 0.56). Licking events did not significantly differ among the four groups. In contrast, the cystitis-liposome group showed significantly more freezing events than the sham-liposome group did (p = 0.002). A significant reduction in the number of freezing events was observed in the cystitis-OND group compared to the cystitis-liposome group (p = 0.04). Immunofluorescence staining demonstrated that NGF expression in the mucosa (p = 0.02) and L6 DRG (p = 0.01) was significantly higher in the cystitis-liposome group than it was in the sham-liposome group. The expression of NGF was significantly lower in the mucosa (p = 0.002) and L6 DRG (p = 0.01) in the cystitis-OND group compared to the cystitis-liposome group. RT-PCR showed that the expression of NGF and TRPV1 mRNA in the mucosa was significantly higher in the cystitis-liposome group than it was in the sham-liposome group (p = 0.001 and 0.03, respectively). On the other hand, these gene expressions were significantly lower in the cystitis-OND group than they were in the cystitis-liposome group (p = 0.007 and 0.02, respectively). The cystitis-liposome group showed significantly higher expression of TRPA1, P2X3, and BDNF mRNA in labeled bladder afferent neurons than the sham-liposome group did (p = 0.03, 0.01, and 0.001, respectively). These gene expressions were significantly lower in the cystitis-OND group compared to the cystitis-liposome group (p = 0.04, 0.006, and 0.03, respectively). The study indicated that intravesical application of liposome-NGF antisense OND significantly improved bladder hypersensitivity induced by chemical cystitis in rats. Intravesical treatment with liposome-OND conjugates could be a novel local therapy of hypersensitive bladder disorders such as bladder pain syndrome/interstitial cystitis.
Collapse
Affiliation(s)
- Tsuyoshi Majima
- 1 Department of Urology, Nagoya University Graduate School of Medicine , Nagoya, Japan .,2 Department of Urology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| | - Pradeep Tyagi
- 2 Department of Urology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| | - Koji Dogishi
- 2 Department of Urology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania.,3 Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University , Kyoto, Japan
| | - Mahendra Kashyap
- 2 Department of Urology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| | - Yasuhito Funahashi
- 1 Department of Urology, Nagoya University Graduate School of Medicine , Nagoya, Japan
| | - Momokazu Gotoh
- 1 Department of Urology, Nagoya University Graduate School of Medicine , Nagoya, Japan
| | - Michael B Chancellor
- 4 Department of Urology, Oakland University William Beaumont School of Medicine , Royal Oak, Michigan
| | - Naoki Yoshimura
- 2 Department of Urology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| |
Collapse
|
13
|
Dogishi K, Okamoto K, Majima T, Konishi-Shiotsu S, Homan T, Kodera M, Oyama S, Oyama T, Shirakawa H, Yoshimura N, Nakagawa T, Kaneko S. A rat long-lasting cystitis model induced by intravesical injection of hydrogen peroxide. Physiol Rep 2017; 5:5/4/e13127. [PMID: 28242819 PMCID: PMC5328770 DOI: 10.14814/phy2.13127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 12/16/2016] [Accepted: 12/19/2016] [Indexed: 12/26/2022] Open
Abstract
Novel longer lasting inflammatory bladder animal models are needed to better understand the pathophysiology of chronic cystitis. We previously developed a relatively long‐lasting mouse cystitis model by intravesical injection of hydrogen peroxide (H2O2). To further evaluate its pathophysiology, in this study, we established and analyzed a rat cystitis model. Under anesthesia, 1.5% H2O2 solution was introduced transurethrally into the bladder of female rats, and kept for 30 min. The H2O2 injection significantly increased the number of micturition events up to day 14 and decreased urine volume per micturition, with the smallest volumes on day 3, compared with the vehicle‐treated group. Cystometric analysis on day 7 revealed that intercontraction intervals were significantly shortened without affecting the baseline, threshold, or maximum pressures. Intravesical resiniferatoxin‐evoked nociceptive behaviors, such as freezing, were significantly enhanced on days 7 and 14. Furthermore, histopathology revealed hemorrhage, edema, infiltration of neutrophils into the lamina propria, and urothelial denudation in the early phase (day 1). These damages were gradually repaired, while hyperplasia of the urothelium, vascularization, increases in fibroblast counts, and infiltration of mast cells and eosinophils were observed through the later phase (days 7 and 14). These results suggest that intravesical H2O2 injection induces relatively long‐lasting cystitis with enhanced bladder activity and pain sensation in rats. This approach thus provides a novel rat long‐lasting cystitis model that allows us to analyze detailed symptoms and pathophysiology of H2O2‐induced cystitis model than the mouse model and may be used to investigate the pathophysiology and treatment of chronic bladder hypersensitive disorders, such as bladder pain syndrome/interstitial cystitis.
Collapse
Affiliation(s)
- Koji Dogishi
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Ken Okamoto
- Discovery Research Laboratories, Nippon Shinyaku Co., Ltd., Minami-ku, Kyoto, Japan
| | - Tsuyoshi Majima
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | | | - Takashi Homan
- Discovery Research Laboratories, Nippon Shinyaku Co., Ltd., Minami-ku, Kyoto, Japan
| | - Mizuki Kodera
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Shohei Oyama
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Tatsuya Oyama
- Discovery Research Laboratories, Nippon Shinyaku Co., Ltd., Minami-ku, Kyoto, Japan
| | - Hisashi Shirakawa
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Naoki Yoshimura
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Takayuki Nakagawa
- Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, Sakyo-ku, Kyoto, Japan
| | - Shuji Kaneko
- Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
| |
Collapse
|
14
|
Monjotin N, Farrié M, Vergnolle N, Le Grand B, Gillespie J, Junquero D. Bladder telemetry: A new approach to evaluate micturition behavior under physiological and inflammatory conditions. Neurourol Urodyn 2016; 36:308-315. [PMID: 26879122 DOI: 10.1002/nau.22970] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 01/25/2016] [Indexed: 12/16/2022]
Abstract
AIMS To establish a new approach to cystometry using telemetry in conscious rats and to use this technique to determine the role of conscious decision making processes with respect to the initiation of voiding in physiological, inflammatory, and painful conditions. METHODS The pressure transducer of a telemetric transmitter was implanted in the dome of the urinary bladder. After a recovery period of at least 1 month, several investigations of urodynamic parameters were performed after diuresis activation by a pulse of furosemide. The model was characterized by tolterodine and mirabegron under physiological conditions and same animals were reused to evaluate the modification of the voiding pattern under bladder inflammation induced by cyclophosphamide. RESULTS The quality of traces and measurement of parameters recorded telemetrically were comparable to those with conventional cystometry. Furosemide induced a reproducible transient increase of urine production and a series of voids that persisted for 60 min. Tolterodine reduced the amplitude of micturition contractions although mirabegron was devoid of any effect. Seven hours after injection of CYP, voiding frequency increased significantly and the micturition amplitude contraction was not altered. However, the mean volume voided during individual micturitions and the total voided volume decreased. During a second exposure to furosemide 24H after CYP injection, the micturition pattern returned to control, however, the micturition volume was still lower than in control. CONCLUSION This telemetric model appears to be as accurate as previously described in conscious conventional cystometry, and allows the repeated evaluation of compounds which may modulate the voiding patterns. Neurourol. Urodynam. 36:308-315, 2017. © 2016 The Authors. Neurourology and Urodynamics published by Wiley Periodicals, Inc.
Collapse
|
15
|
Kawamorita N, Yoshikawa S, Kashyap M, Tyagi P, Arai Y, Chancellor MB, Yoshimura N. Liposome Based Intravesical Therapy Targeting Nerve Growth Factor Ameliorates Bladder Hypersensitivity in Rats with Experimental Colitis. J Urol 2016; 195:1920-6. [PMID: 26780168 DOI: 10.1016/j.juro.2015.12.090] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/31/2015] [Indexed: 12/30/2022]
Abstract
PURPOSE Pelvic organ cross sensitization is considered to contribute to overlapping symptoms in chronic pelvic pain syndrome. Nerve growth factor over expression in the bladder is reportedly involved in the symptom development of bladder pain syndrome/interstitial cystitis. We examined whether a reduction of over expressed nerve growth factor in the bladder by intravesical treatment with liposome and oligonucleotide conjugates would ameliorate bladder hypersensitivity in a rat colitis model. MATERIALS AND METHODS Adult female rats were divided into 1) a control group, 2) a colitis-oligonucleotide group with intracolonic TNBS (2,4,6-trinitrobenzene sulfonic acid) enema and intravesical liposome-oligonucleotide treatments, 2) a colitis-saline group with intracolonic TNBS and intravesical saline treatments, 4) a sham oligonucleotide group with intravesical liposome-oligonucleotide treatment without colitis and 5) a sham-saline group with intravesical saline treatment without colitis. Liposomes conjugated with nerve growth factor antisense oligonucleotide or saline solution were instilled in the bladder and 24 hours later colitis was induced by TNBS enema. Effects of nerve growth factor antisense treatment were evaluated by pain behavior, cystometry, molecular analyses and immunohistochemistry 10 days after TNBS treatment. RESULTS In colitis-oligonucleotide rats nerve growth factor antisense treatment ameliorated pain behavior and decreased a reduction in the intercontraction interval in response to acetic acid stimulation as well as nerve growth factor expression in the bladder mucosa. All were enhanced in colitis-saline rats compared to sham rats. CONCLUSIONS Nerve growth factor over expression in the bladder mucosa and bladder hypersensitivity induced after colitis were decreased by intravesical application of liposome-oligonucleotide targeting nerve growth factor. This suggests that local antinerve growth factor therapy could be effective treatment of bladder symptoms in chronic pelvic pain syndrome.
Collapse
Affiliation(s)
- Naoki Kawamorita
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; Department of Urology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Satoru Yoshikawa
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Mahendra Kashyap
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Pradeep Tyagi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Yoichi Arai
- Department of Urology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Michael B Chancellor
- Department of Urology, Oakland University William Beaumont School of Medicine, Royal Oak, Michigan
| | - Naoki Yoshimura
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
| |
Collapse
|
16
|
Aizawa N, Wakamatsu D, Kida J, Otsuki T, Saito Y, Matsuya H, Homma Y, Igawa Y. Inhibitory effects of retigabine, a Kv7 channel activator, on mechanosensitive primary bladder afferent activities and nociceptive behaviors in rats. Neurourol Urodyn 2015; 36:280-285. [DOI: 10.1002/nau.22920] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 10/13/2015] [Indexed: 01/25/2023]
Affiliation(s)
- Naoki Aizawa
- Department of Continence Medicine; The University of Tokyo Graduate School of Medicine; Tokyo Japan
| | - Daisuke Wakamatsu
- Discovery Research Laboratories 4; Department of Biology & Pharmacology; ONO Pharmaceutical Co., Ltd.; Osaka Japan
| | - Jun Kida
- Discovery Research Laboratories 4; Department of Biology & Pharmacology; ONO Pharmaceutical Co., Ltd.; Osaka Japan
| | - Takeya Otsuki
- Discovery Research Laboratories 4; Department of Biology & Pharmacology; ONO Pharmaceutical Co., Ltd.; Osaka Japan
| | - Yasuho Saito
- Department of Urology; The University of Tokyo Graduate School of Medicine; Tokyo Japan
| | - Hidekazu Matsuya
- Discovery Research Laboratories 4; Department of Biology & Pharmacology; ONO Pharmaceutical Co., Ltd.; Osaka Japan
| | - Yukio Homma
- Department of Urology; The University of Tokyo Graduate School of Medicine; Tokyo Japan
| | - Yasuhiko Igawa
- Department of Continence Medicine; The University of Tokyo Graduate School of Medicine; Tokyo Japan
| |
Collapse
|
17
|
Majima T, Funahashi Y, Takai S, Goins WF, Gotoh M, Tyagi P, Glorioso JC, Yoshimura N. Herpes Simplex Virus Vector-Mediated Gene Delivery of Poreless TRPV1 Channels Reduces Bladder Overactivity and Nociception in Rats. Hum Gene Ther 2015. [PMID: 26204493 DOI: 10.1089/hum.2015.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Increased afferent excitability has been proposed as an important pathophysiology of interstitial cystitis/bladder pain syndrome (IC/BPS) and overactive bladder (OAB). In this study, we investigated whether herpes simplex virus (HSV) vectors encoding poreless TRPV1, in which the segment in C terminus of TRPV1 receptor is deleted, suppress bladder overactivity and pain behavior using a rat model of chemical cystitis. Replication-defective HSV vectors encoding poreless TRPV1 were injected into the bladder wall of adult female Sprague-Dawley rats. Additionally, recombinant HSV virus (vHG) vectors were injected as control. Cystometry (CMG) under urethane anesthesia was performed 1 week after viral injection to evaluate bladder overactivity induced by resiniferatoxin (RTx, a TRPV1 agonist). RTx-induced nociceptive behavior such as licking (lower abdominal licking) and freezing (motionless head-turning) was observed 2 weeks after viral injection. GFP expression in L4/L6/S1 dorsal root ganglia and the bladder as well as c-Fos-positive cells in the L6 spinal cord dorsal horn were also evaluated 2 weeks after viral injection. In CMG, the poreless TRPV1 vector-treated group showed a significantly smaller reduction in intercontraction intervals and voided volume after RTx infusion than the vHG-treated control group. The number of the RTx-induced freezing events was significantly decreased in the poreless TRPV1 group than in the vHG group, whereas there was no significant difference of the number of RTx-induced licking events between groups. The number of c-Fos-positive cells in the DCM and SPN regions of the L6 spinal dorsal horn was significantly smaller in the poreless TRPV1 group than in the vHG group. Our results indicated that HSV vector-mediated gene delivery of poreless TRPV1 had a therapeutic effect on TRPV1-mediated bladder overactivity and pain behavior. Thus, the HSV vector-mediated gene therapy targeting TRPV1 receptors could be a novel modality for the treatment of OAB and/or hypersensitive bladder disorders such as IC/BPS.
Collapse
Affiliation(s)
- Tsuyoshi Majima
- 1 Department of Urology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania.,2 Department of Urology, Nagoya University Graduate School of Medicine , Nagoya, Japan
| | - Yasuhito Funahashi
- 2 Department of Urology, Nagoya University Graduate School of Medicine , Nagoya, Japan
| | - Shun Takai
- 1 Department of Urology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania.,2 Department of Urology, Nagoya University Graduate School of Medicine , Nagoya, Japan
| | - William F Goins
- 3 Department of Microbiology & Molecular Genetics, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| | - Momokazu Gotoh
- 2 Department of Urology, Nagoya University Graduate School of Medicine , Nagoya, Japan
| | - Pradeep Tyagi
- 1 Department of Urology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| | - Joseph C Glorioso
- 3 Department of Microbiology & Molecular Genetics, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| | - Naoki Yoshimura
- 1 Department of Urology, University of Pittsburgh School of Medicine , Pittsburgh, Pennsylvania
| |
Collapse
|
18
|
Complementary Alternative Medicine and Therapies for Overactive Bladder Symptoms: Is There Evidence for Benefit? CURRENT BLADDER DYSFUNCTION REPORTS 2015. [DOI: 10.1007/s11884-014-0280-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
19
|
Qiao Z, Xia C, Shen S, Corwin FD, Liu M, Guan R, Grider JR, Qiao LY. Suppression of the PI3K pathway in vivo reduces cystitis-induced bladder hypertrophy and restores bladder capacity examined by magnetic resonance imaging. PLoS One 2014; 9:e114536. [PMID: 25486122 PMCID: PMC4259345 DOI: 10.1371/journal.pone.0114536] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 11/10/2014] [Indexed: 11/18/2022] Open
Abstract
This study utilized magnetic resonance imaging (MRI) to monitor the real-time status of the urinary bladder in normal and diseased states following cyclophosphamide (CYP)-induced cystitis, and also examined the role of the phosphoinositide 3-kinase (PI3K) pathway in the regulation of urinary bladder hypertrophy in vivo. Our results showed that under MRI visualization the urinary bladder wall was significantly thickened at 8 h and 48 h post CYP injection. The intravesical volume of the urinary bladder was also markedly reduced. Treatment of the cystitis animals with a specific PI3K inhibitor LY294002 reduced cystitis-induced bladder wall thickening and enlarged the intravesical volumes. To confirm the MRI results, we performed H&E stain postmortem and examined the levels of type I collagen by real-time PCR and western blot. Inhibition of the PI3K in vivo reduced the levels of type I collagen mRNA and protein in the urinary bladder ultimately attenuating cystitis-induced bladder hypertrophy. The bladder mass calculated according to MRI data was consistent to the bladder weight measured ex vivo under each drug treatment. MRI results also showed that the urinary bladder from animals with cystitis demonstrated high magnetic signal intensity indicating considerable inflammation of the urinary bladder when compared to normal animals. This was confirmed by examination of the pro-inflammatory factors showing that interleukin (IL)-1α, IL-6 and tumor necrosis factor (TNF)α levels in the urinary bladder were increased with cystitis. Our results suggest that MRI can be a useful technique in tracing bladder anatomy and examining bladder hypertrophy in vivo during disease development and the PI3K pathway has a critical role in regulating bladder hypertrophy during cystitis.
Collapse
Affiliation(s)
- Zhongwei Qiao
- Children's Hospital of Fudan University, Division of Radiology, Shanghai, China
| | - Chunmei Xia
- Department of Physiology and Pathophysiology, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America
| | - Shanwei Shen
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America
| | - Frank D. Corwin
- Department of Radiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America
| | - Miao Liu
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America
| | - Ruijuan Guan
- Department of Physiology and Pathophysiology, Shanghai Medical College, Fudan University, Shanghai, China
| | - John R. Grider
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America
- Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America
| | - Li-Ya Qiao
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America
- Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, Virginia, United States of America
- * E-mail:
| |
Collapse
|
20
|
Yoshikawa S, Kawamorita N, Oguchi T, Funahashi Y, Tyagi P, Chancellor MB, Yoshimura N. Pelvic organ cross-sensitization to enhance bladder and urethral pain behaviors in rats with experimental colitis. Neuroscience 2014; 284:422-429. [PMID: 25445197 DOI: 10.1016/j.neuroscience.2014.08.064] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 08/19/2014] [Accepted: 08/26/2014] [Indexed: 12/12/2022]
Abstract
Neural cross-sensitization has been postulated as a mechanism underlying overlaps of chronic pelvic pain disorders such as bladder pain syndrome/interstitial cystitis (BPS/IC) and irritable bowel syndrome (IBS). Animals with experimental colitis have been used to study the underlying mechanisms for overlapped pelvic pain symptoms, and shown to exhibit bladder overactivity evidenced by frequent voiding; however, it has not directly been evaluated whether pain sensation derived from the lower urinary tract is enhanced in colitis models. Also, the cross-sensitization between the colon and urethra has not been studied previously. In the present study, we therefore investigated pain behaviors induced by nociceptive stimuli in the lower urinary tract and the involvement of C-fiber afferent pathways using rats with colitis induced by intracolonic application of 2,4,6-trinitrobenzenesulfonic acid (TNBS). In TNBS-induced colitis rats at 10 days, intravesical application of resiniferatoxin (RTx) induced a significantly greater number of episodes of both licking and freezing behaviors, which were reduced by capsaicin-sensitive C-fiber afferent desensitization. Histochemical studies using fluorescent dye tracers injected into the colon, bladder or urethra showed that dichotomized afferent neurons comprised 6.9-14.5% of L1, L6 and S1 dorsal root ganglion (DRG) neurons innervating the colon or the lower urinary tract. Transient receptor potential vanilloid 1 (TRPV1) mRNA expression was significantly increased in, the bladder, urethra and S1 DRG in colitis rats. An increase in myeloperoxidase (MPO) activity was found in the colon, but not in the bladder or urethra after intracolonic TNBS treatment. These results indicate that TNBS-induced colitis increased pain sensitivity in the bladder and urethra via activation of C-fiber afferent pathways due to colon-to-bladder and colon-to-urethral cross-sensitization, suggesting the contribution of pelvic organ cross-sensitization mechanisms to overlapped pain symptoms in BPS/IC and IBS.
Collapse
Affiliation(s)
- S Yoshikawa
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - N Kawamorita
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - T Oguchi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Y Funahashi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - P Tyagi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - M B Chancellor
- Department of Urology, William Beaumont Hospital, Royal Oak, MI, USA
| | - N Yoshimura
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
| |
Collapse
|
21
|
Yokoyama H, Oguchi T, Goins WF, Goss JR, Nishizawa O, de Groat WC, Wolfe D, Krisky DM, Glorioso JC, Yoshimura N. Effects of herpes simplex virus vector-mediated enkephalin gene therapy on bladder overactivity and nociception. Hum Gene Ther 2013; 24:170-80. [PMID: 23316929 DOI: 10.1089/hum.2011.180] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We previously reported the effects of herpes simplex virus (HSV) vector-mediated enkephalin on bladder overactivity and pain. In this study, we evaluated the effects of vHPPE (E1G6-ENK), a newly engineered replication-deficient HSV vector encoding human preproenkephalin (hPPE). vHPPE or control vector was injected into the bladder wall of female rats 2 weeks prior to the following studies. A reverse-transcription PCR study showed high hPPE transgene levels in L6 dorsal root ganglia innervating the bladder in the vHPPE group. The number of freezing behaviors, which is a nociceptive reaction associated with bladder pain, was also significantly lower in the vHPPE group compared with the control group. The number of L6 spinal cord c-fos-positive cells and the urinary interleukin (IL)-1β and IL-6 levels after resiniferatoxin (RTx) administration into the bladder of the vHPPE group were significantly lower compared with those of the control vector-injected group. In continuous cystometry, the vHPPE group showed a smaller reduction in intercontraction interval after RTx administration into the bladder. This antinociceptive effect was antagonized by naloxone hydrochloride. Thus, the HSV vector vHPPE encoding hPPE demonstrated physiological improvement in visceral pain induced by bladder irritation. Gene therapy may represent a potentially useful treatment modality for bladder hypersensitive disorders such as bladder pain syndrome/interstitial cystitis.
Collapse
Affiliation(s)
- Hitoshi Yokoyama
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Chughtai B, Kavaler E, Lee R, Te A, Kaplan SA, Lowe F. Use of herbal supplements for overactive bladder. Rev Urol 2013; 15:93-96. [PMID: 24223020 PMCID: PMC3821987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Anticholinergics, specifically antimuscarinic agents, are the most common medications prescribed for overactive bladder (OAB). The most common side effects of these agents are dry mouth and constipation, although other more concerning effects include changes in blood pressure, pulse rate, or heart rhythm when treatment is initiated. Herbal treatments are an increasingly popular alternative for treating OAB. A 2002 survey of US adults aged ≥ 18 years conducted by the Centers for Disease Control and Prevention indicated that 74.6% of those with OAB had used some form of complementary and alternative medicine. The World Health Organization estimates that 80% of the world's population presently uses herbal medicine for some aspect of primary health care. Women were more likely than men to use complementary and alternative medicine. The authors review the most commonly used herbal medications for OAB.
Collapse
Affiliation(s)
- Bilal Chughtai
- Department of Urology, New York-Presbyterian Hospital, Weill Cornell Medical College New York, NY
| | | | | | | | | | | |
Collapse
|
23
|
Funahashi Y, Oguchi T, Goins WF, Gotoh M, Tyagi P, Goss JR, Glorioso JC, Yoshimura N. Herpes simplex virus vector mediated gene therapy of tumor necrosis factor-α blockade for bladder overactivity and nociception in rats. J Urol 2012; 189:366-73. [PMID: 23174234 DOI: 10.1016/j.juro.2012.08.192] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Accepted: 06/27/2012] [Indexed: 01/08/2023]
Abstract
PURPOSE We examined the effects of tumor necrosis factor-α blockade on bladder overactivity and nociception using replication defective HSV vectors expressing tumor necrosis factor-α soluble receptor. MATERIALS AND METHODS HSV vectors expressing tumor necrosis factor-α soluble receptor or β-galactosidase/green fluorescent protein as the control were injected into the bladder wall of female Sprague-Dawley® rats. Green fluorescent protein was observed with fluorescent microscopy in the bladder and L6 dorsal root ganglia. mRNA and protein expression of tumor necrosis factor-α, and interleukin-1β and 6 as well as myeloperoxidase activity in the bladder were determined by quantitative reverse transcriptase-polymerase chain reaction and enzyme-linked immunosorbent assay 4 hours after intravesical resiniferatoxin administration. c-Fos positive neurons were counted in the L6 spinal dorsal horn. Cystometry and behavioral analyses were also performed. RESULTS Green fluorescent protein expression was confirmed in the bladder and L6 dorsal root ganglia. Resiniferatoxin administration significantly increased tumor necrosis factor-α mRNA and protein levels in the bladder in controls. Tumor necrosis factor-α mRNA was also increased in the tumor necrosis factor-α soluble receptor group, although tumor necrosis factor-α protein up-regulation was suppressed. The up-regulation of interleukin-1β and 6 mRNA and protein levels, and the myeloperoxidase activity seen in controls were suppressed in the tumor necrosis factor-α soluble receptor group. c-Fos positive cells in the L6 spinal dorsal horn were less prominent in the tumor necrosis factor-α soluble receptor group than in controls. On cystometry the significant decrease in intercontraction intervals after resiniferatoxin infusion detected in controls was not seen in the tumor necrosis factor-α soluble receptor group. On behavioral analyses freezing behavior was significantly decreased in the tumor necrosis factor-α soluble receptor group without affecting licking behavior. CONCLUSIONS HSV vector mediated tumor necrosis factor-α blockade gene therapy in the bladder and bladder afferent pathways decreases the bladder pain and overactivity induced by nociceptive bladder stimuli.
Collapse
Affiliation(s)
- Yasuhito Funahashi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Oguchi T, Funahashi Y, Yokoyama H, Nishizawa O, Goins WF, Goss JR, Glorioso JC, Yoshimura N. Effect of herpes simplex virus vector-mediated interleukin-4 gene therapy on bladder overactivity and nociception. Gene Ther 2012; 20:194-200. [PMID: 22402319 DOI: 10.1038/gt.2012.24] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We investigated the effects of replication-defective herpes simplex virus (HSV) vector expression of interleukin-4 (IL-4) on bladder overactivity and nociception. HSV vector expressing murine interleukin-4 (S4IL4) or the control vector expressing β-galactosidase (SHZ) were injected to the rat bladder wall. At 1 week after viral injection, in cystometry performed under urethane anesthesia, the S4IL4-treated group did not show the intercontraction intervals reduction during intravesical administration of 10 nM resiniferatoxin (RTx). At 2 weeks after viral injection, behavioral studies were performed on vector-injected animals in an awakened state. Freezing behavior induced by 3 μM RTx, administered for 1 min into the bladder, was significantly suppressed in the S4IL4 group compared with the SHZ group. Murine IL-4 levels examined by ELISA were significantly increased in bladder and bladder afferent dorsal root ganglia at 2 weeks after viral injection. The expression of IL-1β and IL-2 and bladder inflammatory responses were significantly suppressed in the RTx-irritated bladder of S4IL4-injected rats. These results indicate that HSV vector-mediated interleukin-4 expression in the bladder and bladder afferent pathways reduces the inflammatory response, bladder overactivity and nociceptive behavior induced by bladder irritation in the rat model. Therefore, IL-4 gene therapy could be a new strategy for treating urinary frequency and/or bladder pain.
Collapse
Affiliation(s)
- T Oguchi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Oyama T, Homan T, Kyotani J, Oka M. Effect of tramadol on pain-related behaviors and bladder overactivity in rodent cystitis models. Eur J Pharmacol 2012; 676:75-80. [DOI: 10.1016/j.ejphar.2011.12.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 11/18/2011] [Accepted: 12/01/2011] [Indexed: 10/14/2022]
|
26
|
Glycine transporter type 2 (GlyT2) inhibitor ameliorates bladder overactivity and nociceptive behavior in rats. Eur Urol 2012; 62:704-12. [PMID: 22341128 DOI: 10.1016/j.eururo.2012.01.044] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2011] [Accepted: 01/24/2012] [Indexed: 12/26/2022]
Abstract
BACKGROUND Glycine is a major inhibitory neurotransmitter in the spinal cord, the concentration of which is regulated by two types of glycine transporters (GlyTs): GlyT1 and GlyT2. We hypothesized that the inhibition of GlyTs could ameliorate bladder overactivity and/or pain sensation in the lower urinary tract. OBJECTIVE Investigate the effects of GlyT inhibitors on bladder overactivity and pain behavior in rats. DESIGN, SETTING, AND PARTICIPANTS Cystometry was performed under urethane anesthesia in cyclophosphamide (CYP)-treated rats. In behavioral studies using conscious rats, nociceptive responses were induced by intravesical administration of resiniferatoxin (3μM). Selective GlyT1 or GlyT2 inhibitors were administered intrathecally to evaluate their effects. MEASUREMENTS Cystometric parameters, nociceptive behaviors (licking and freezing), and messenger RNA (mRNA) levels of GlyTs and glycine receptor (GlyR) subunits in the dorsal spinal cord (L6-S1) were measured. RESULTS AND LIMITATIONS During cystometry in CYP-treated rats, significant increases in intercontraction interval and micturition pressure threshold were elicited by ALX-1393, a selective GlyT2 inhibitor, but not by sarcosine, a GlyT1 inhibitor. These effects were completely reversed by strychnine, a GlyR antagonist. ALX-1393 also significantly suppressed nociceptive behaviors in a dose-dependent manner. In sham rats, GlyT2 mRNA was expressed at a much higher level (23-fold) in the dorsal spinal cord than GlyT1 mRNA. In CYP-treated rats, mRNA levels of GlyT2 and the GlyR α1 and β subunits were significantly reduced. CONCLUSIONS These results indicate that GlyT2 plays a major role in the clearance of extracellular glycine in the spinal cord and that GlyT2 inhibition leads to amelioration of CYP-induced bladder overactivity and pain behavior. GlyT2 may be a novel therapeutic target for the treatment of overactive bladder and/or bladder hypersensitive disorders such as bladder pain syndrome/interstitial cystitis.
Collapse
|
27
|
Yamamoto K, Takao T, Nakayama J, Kiuchi H, Okuda H, Fukuhara S, Yoshioka I, Matsuoka Y, Miyagawa Y, Tsujimura A, Nonomura N. Water avoidance stress induces frequency through cyclooxygenase-2 expression: A bladder rat model. Int J Urol 2011; 19:155-62. [DOI: 10.1111/j.1442-2042.2011.02905.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
28
|
HSV delivery of a ligand-regulated endogenous ion channel gene to sensory neurons results in pain control following channel activation. Mol Ther 2010; 19:500-6. [PMID: 21081904 DOI: 10.1038/mt.2010.246] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Persistent pain remains a tremendous health problem due to both its prevalence and dearth of effective therapeutic interventions. To maximize pain relief while minimizing side effects, current gene therapy-based approaches have mostly exploited the expression of pain inhibitory products or interfered with pronociceptive ion channels. These methods do not enable control over the timing or duration of analgesia, nor titration to analgesic efficacy. Here, we describe a gene therapy strategy that potentially overcomes these limitations by providing exquisite control over therapy with efficacy in clinically relevant models of inflammatory pain. We utilize a herpes simplex viral (HSV) vector (vHGlyRα1) to express a ligand-regulated chloride ion channel, the glycine receptor (GlyR) in targeted sensory afferents; the subsequent exogenous addition of glycine provides the means for temporal and spatial control of afferent activity, and therefore pain. Use of an endogenous inhibitory receptor not normally present on sensory neurons both minimizes immunogenicity and maximizes therapeutic selectivity.
Collapse
|
29
|
Yokoyama H, Sasaki K, Franks ME, Goins WF, Goss JR, de Groat WC, Glorioso JC, Chancellor MB, Yoshimura N. Gene therapy for bladder overactivity and nociception with herpes simplex virus vectors expressing preproenkephalin. Hum Gene Ther 2010; 20:63-71. [PMID: 20377371 DOI: 10.1089/hum.2008.094] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Interstitial cystitis/painful bladder syndrome (IC/PBS) is a major challenge to treat. We studied the effect of targeted and localized expression of enkephalin in afferent nerves that innervate the bladder by gene transfer using replication-defective herpes simplex virus (HSV) vectors in a rat model of bladder hyperactivity and pain. Replication-deficient HSV vectors encoding preproenkephalin, which is a precursor for Met- and Leu-enkephalin, or control vector encoding the lacZ reporter gene, were injected into the bladder wall of female rats. After viral vector injection, quantitative polymerase chain reaction showed high preproenkephalin transgene levels in bladder and dorsal root ganglia innervating the bladder in enkephalin vector-treated animals. Functionally, enkephalin vector-treated animals showed reductions in bladder hyperactivity and nociceptive behavior induced by intravesical application of capsaicin; however, vector-mediated expression of enkephalin did not alter normal voiding. This antinociceptive effect of enkephalin gene therapy was antagonized by naloxone hydrochloride administration. Together, our results with HSV vectors encoding preproenkephalin demonstrated physiological improvement in visceral pain induced by bladder irritation. Thus, gene therapy may represent a potentially useful treatment modality for bladder hypersensitive disorders such as IC/PBS.
Collapse
Affiliation(s)
- Hitoshi Yokoyama
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Saitoh C, Yokoyama H, Chancellor MB, de Groat WC, Yoshimura N. Comparison of voiding function and nociceptive behavior in two rat models of cystitis induced by cyclophosphamide or acetone. Neurourol Urodyn 2010; 29:501-5. [PMID: 19618450 DOI: 10.1002/nau.20777] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AIMS Nociceptive behavior and its relationship with bladder dysfunction were investigated in two cystitis models, which were induced by intraperitoneal (i.p.) injection of cyclophosphamide (CYP) or intravesical instillation of acetone, using freely moving, non-catheterized conscious rats. METHODS Female Sprague-Dawley rats were used. Cystitis was induced by i.p. injection of CYP (100 and 200 mg/kg) or intravesical instillation of acetone (10%, 30%, and 50%) via a polyethylene catheter temporarily inserted into the bladder through the urethra. Then the incidence of nociceptive behavior (immobility with decreased breathing rates) was scored. Voided urine was collected simultaneously and continuously to measure bladder capacity. The plasma extravasation in the bladder was quantified by an Evans blue (EB) dye leakage technique. RESULTS CYP (100 mg/kg, i.p.) induced nociceptive behavior without affecting bladder capacity or EB concentration in the bladder. A higher dose of CYP (200 mg/kg, i.p.) decreased bladder capacity and increased EB levels as well as nociceptive behavior. In contrast, intravesical instillation of acetone (30%) decreased bladder capacity and increased EB levels, but evoked nociceptive behavior less frequently compared with CYP-treated animals. In capsaicin-pretreated rats, nociceptive behavior induced by CYP or acetone was reduced; however, the overall effects of CYP or acetone on bladder capacity and bladder EB levels were unaffected. CONCLUSIONS These results suggest that there is a difference in the induction process of nociceptive behavior and small bladder capacity after two different types of bladder irritation, and that C-fiber sensitization is more directly involved in pain sensation than reduced bladder capacity.
Collapse
Affiliation(s)
- Chikashi Saitoh
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA
| | | | | | | | | |
Collapse
|
31
|
Cefalu JS, Guillon MA, Burbach LR, Zhu QM, Hu DQ, Ho MJ, Ford AP, Nunn PA, Cockayne DA. Selective Pharmacological Blockade of the TRPV1 Receptor Suppresses Sensory Reflexes of the Rodent Bladder. J Urol 2009; 182:776-85. [DOI: 10.1016/j.juro.2009.03.085] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Indexed: 11/27/2022]
|
32
|
Goins WF, Goss JR, Chancellor MB, de Groat WC, Glorioso JC, Yoshimura N. Herpes simplex virus vector-mediated gene delivery for the treatment of lower urinary tract pain. Gene Ther 2009; 16:558-69. [PMID: 19242523 DOI: 10.1038/gt.2009.19] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Interstitial cystitis (IC)/painful bladder syndrome (PBS) is a painful debilitating chronic visceral pain disorder of unknown etiology that affects an estimated 1 million people in the United States alone. It is characterized by inflammation of the bladder that results in chronic pelvic pain associated with bladder symptoms of urinary frequency and urgency. Regardless of the etiology, IC/PBS involves either increased and/or abnormal activity in afferent nociceptive sensory neurons. Pain-related symptoms in patients with IC/PBS are often very difficult to treat. Both medical and surgical therapies have had limited clinical utility in this debilitating disease and numerous drug treatments, such as heparin, dimethylsulfoxide and amitriptyline, have proven to be palliative at best, and in some IC/PBS patients provide no relief whatsoever. Although opiate narcotics have been employed to help alleviate IC/PBS pain, this strategy is fraught with problems as systemic narcotic administration causes multiple unwanted side effects including mental status change and constipation. Moreover, chronic systemic narcotic use leads to dependency and need for dose escalation due to tolerance; therefore, new therapies are desperately needed to treat refractory IC/PBS. This has led our group to develop a gene therapy strategy that could potentially alleviate chronic pelvic pain using the herpes simplex virus-directed delivery of analgesic proteins to the bladder.
Collapse
Affiliation(s)
- W F Goins
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA.
| | | | | | | | | | | |
Collapse
|
33
|
Drake MJ. Emerging drugs for treatment of overactive bladder and detrusor overactivity. Expert Opin Emerg Drugs 2008; 13:431-46. [PMID: 18764721 DOI: 10.1517/14728214.13.3.431] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND Overactive bladder (OAB) signifies the presence of urinary urgency and can have major effects on quality of life and social functioning. Standard antimuscarinic drugs have good initial response rates but substantial adverse effects and long-term compliance problems. OBJECTIVES To review the complexities of the mechanisms underlying OAB and the current drugs available for treating its symptoms. METHODS The literature was reviewed to define current therapies and drugs in clinical trials. Articles were identified by means of a computerised PubMed and Cochrane Library search (using the following keywords: overactive bladder, detrusor overactivity, urgency and bladder), supported by a search of the PharmaProjects database. CONCLUSIONS New drug classes, such as beta-3 adrenergic agonists, may work by reducing contractility or excitability of bladder muscle. Moderation of afferent activity may allow improved OAB symptoms, with lower risk of affecting voiding function. Agents acting on the CNS could influence OAB favourably, but target selection and adverse effects are an issue. The recognition of the functional contribution of the urothelium and the diversity of nerve transmitters has sparked interest in both peripheral and central modulation of OAB pathophysiology.
Collapse
Affiliation(s)
- Marcus J Drake
- Bristol Urological Institute, Southmead Hospital, Bristol, BS10 5NB, UK.
| |
Collapse
|