1
|
Ogawa N, Imamura T, Minagawa T, Ogawa T, Ishizuka O. Autologous Bilayered Adipose-Derived Mesenchymal Cell-Gelatin Sheets Reconstruct Ureters in Rabbits. Tissue Eng Part A 2022; 28:855-866. [PMID: 35850515 DOI: 10.1089/ten.tea.2022.0087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
Repair of ureteral defects or strictures due to disease or trauma is usually dependent upon surgery that often requires either reoperation or an alternative treatment. By taking advantage of tissue engineering and regenerative techniques, it may be possible to define new approaches to ureteral repair. In this study, we fabricated autologous bilayered adipose-derived mesenchymal cell (AMC)-gelatin sheets and transplanted them into rabbits to replace surgically excised ureteral segments. AMCs harvested from abdominal adipose tissues of female New Zealand White rabbits were cultured on collagen-coated dishes and labeled with PKH26, a red fluorescent dye, for later identification. Monolayers of the cultured PKH26-labeled AMCs were detached and applied to gelatin hydrogel sheets. Two gelatin sheets were then united with the AMC monolayers apposed together, forming a bilayered AMC-gelatin sheet. Following each partial ureterectomy, a bilayered autologous AMC-gelatin sheet was transplanted, joining the proximal and distal ends of the remaining the ureter (n=9). Control animals underwent the same procedure except that the transplant was achieved with a bilayered acellular-gelatin sheet (n=9). At 4 and 8 weeks after transplantation, the proximal regions of ureters treated with the control bilayered acellular-gelatin sheets exhibited flexures and dilations, which are not characteristic of unoperated ureters. In contrast, the bilayered AMC-gelatin sheet transplanted rabbits did not have ureteral flexures or dilations. About midway between the proximal and distal ends, both the control and experimental reconstructed ureteral walls had smooth muscle layers; however, those in the experimental reconstructed ureteral walls were significantly thicker and better organized than those in the control reconstructed ureteral walls. Some AMCs differentiated into smooth muscle marker-positive cells. The experimental ureteral walls contained smooth muscle cells derived from the PKH26-labeled AMCs and others that were derived through migration and differentiation of cells from the remaining proximal and distal ends of the original ureter. In addition, the lumina of the 8-week reconstructed ureteral tissues in experimental rabbits did not show histological strictures as seen in the control ureters. These results suggest that the bilayered AMC-gelatin sheets have the potential to replace defective tissues and/or reconstruct damaged ureters.
Collapse
Affiliation(s)
- Noriyuki Ogawa
- Shinshu University Graduate School of Medicine School of Medicine, 34808, Department of Urology, 3-1-1, Asahi, Matsumoto, Japan, 390-8621;
| | - Tetsuya Imamura
- Shinshu University Graduate School of Medicine School of Medicine, 34808, Department of Urology, Matsumoto, Nagano, Japan;
| | - Tomonori Minagawa
- Shinshu University Graduate School of Medicine School of Medicine, 34808, Department of Urology, Matsumoto, Nagano, Japan;
| | - Teruyuki Ogawa
- Shinshu University Graduate School of Medicine School of Medicine, 34808, Department of Urology, Matsumoto, Nagano, Japan;
| | - Osamu Ishizuka
- Shinshu University Graduate School of Medicine School of Medicine, 34808, Department of Urology, Matsumoto, Nagano, Japan;
| |
Collapse
|
2
|
Chuang YC, Tyagi P, Luo HL, Lee WC, Wang HJ, Huang CC, Chancellor MB. Long-term functional change of cryoinjury-induced detrusor underactivity and effects of extracorporeal shock wave therapy in a rat model. Int Urol Nephrol 2019; 51:617-626. [DOI: 10.1007/s11255-019-02095-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 01/31/2019] [Indexed: 01/06/2023]
|
3
|
Sadahide K, Teishima J, Inoue S, Tamura T, Kamei N, Adachi N, Matsubara A. Endoscopic repair of the urinary bladder with magnetically labeled mesenchymal stem cells: Preliminary report. Regen Ther 2018; 10:46-53. [PMID: 30581896 PMCID: PMC6299148 DOI: 10.1016/j.reth.2018.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/07/2018] [Accepted: 10/30/2018] [Indexed: 01/01/2023] Open
Abstract
Introduction Transurethral resection of a bladder tumor (TURBT) using a resectoscope has been standard treatment for bladder cancer. However, no treatment method promotes the repair of resected bladder tissue. The aim of this study was to examine the healing process of damaged bladder tissue after a transurethral injection of bone marrow mesenchymal stem cells (MSCs) into the bladder. An injection of magnetic MSCs meant that they accumulated in the damaged area of the bladder. Another aim of this study was to compare the acceleration effect of MSC magnetic delivery on the repair of bladder tissue with that of non-magnetic MSC injection. Methods Using the transurethral approach to avoid opening the abdomen, electrofulguration was carried out on the anterior wall of the urinary bladder of white Japanese rabbits to mimic tumor resection. An external magnetic field directed at the injured site was then applied using a 1-tesla (T) permanent magnet. Twelve rabbits were divided into three groups. The 1 × 106 of magnetically labeled MSCs were injected into the urinary bladder with or without the magnetic field (MSC M+ and MSC M-groups, respectively), and phosphate-buffered saline was injected as the control. The effects of the injections in the three groups at 14 days were examined using 4.7-T magnetic resonance imaging (MRI) then macroscopically and histologically. The mRNA expressions of several cytokines in the repair tissues were assessed using real-time polymerase chain reaction. Results The macroscopic findings showed the area of repair tissue in the MSC M+ group to be larger than that in either the MSC M-group or control group. MRI clearly depicted the macroscopic findings. The histological study showed that repair of the cauterized area with myofibrous tissue was significantly better in the MSC M+ group than that in either the MSC M-group or control group, although there was no significant difference in several mRNA cytokines among the three groups at 14 days after surgery. Conclusions The magnetic delivery of MSCs shows promise as an effective, minimally invasive method of enhancing tissue regeneration after TURBT.
Collapse
Key Words
- BC, urinary bladder cancer
- Bone marrow
- Cancer
- FA, flip angle
- FBS, fetal bovine serum
- H&E, hematoxylin and eosin
- MRI, Magnetic resonance imaging
- MSC, mesenchymal stem cell
- Mesenchymal stem cell
- NEX, number of excitations
- NMIBC, non-muscle invasive urinary bladder cancer
- PBS, phosphate-buffered saline
- PCR, polymerase chain reaction
- Regeneration
- SPION, superparamagnetic iron oxide nanoparticle
- TE, echo time
- TR, repetition time
- TURBT, transurethral resection of bladder tumor
- Transurethral resection
- Urinary bladder
- αSMA, α-smooth muscle actin
Collapse
Affiliation(s)
- Kosuke Sadahide
- Department of Urology, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
- Corresponding author.
| | - Jun Teishima
- Department of Urology, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shogo Inoue
- Department of Urology, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Takayuki Tamura
- Department of Radiology, Hiroshima University Hospital, Hiroshima, Japan
| | - Naosuke Kamei
- Department of Orthopaedic Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
- Medical Center for Translational & Clinical Research, Hiroshima University Hospital, Hiroshima, Japan
| | - Nobuo Adachi
- Department of Orthopaedic Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Akio Matsubara
- Department of Urology, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| |
Collapse
|
4
|
Imamura T, Shimamura M, Ogawa T, Minagawa T, Nagai T, Silwal Gautam S, Ishizuka O. Biofabricated Structures Reconstruct Functional Urinary Bladders in Radiation-Injured Rat Bladders. Tissue Eng Part A 2018; 24:1574-1587. [DOI: 10.1089/ten.tea.2017.0533] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Tetsuya Imamura
- Department of Urology, Shinshu University School of Medicine, Nagano, Japan
| | | | - Teruyuki Ogawa
- Department of Urology, Shinshu University School of Medicine, Nagano, Japan
| | - Tomonori Minagawa
- Department of Urology, Shinshu University School of Medicine, Nagano, Japan
| | - Takashi Nagai
- Department of Urology, Shinshu University School of Medicine, Nagano, Japan
| | | | - Osamu Ishizuka
- Department of Urology, Shinshu University School of Medicine, Nagano, Japan
| |
Collapse
|
5
|
Chuang YC, Tyagi P, Wang HJ, Huang CC, Lin CC, Chancellor MB. Urodynamic and molecular characteristics of detrusor underactivity in a rat cryoinjury model and effects of low energy shock wave therapy. Neurourol Urodyn 2017; 37:708-715. [PMID: 28767169 DOI: 10.1002/nau.23381] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 07/11/2017] [Indexed: 01/05/2023]
Abstract
AIMS Low energy shock wave (LESW) has been shown to facilitate tissue regeneration and reduce inflammation. We investigated the effects of LESW in an underactive (DU) model induced by cryoinjury of rat detrusor. METHODS Forty-six female Sprague-Dawley rats were divided into sham, cryoinjury with or without LESW (0.12 mJ/mm2 ; 200 pulses). Under halothane anesthesia, a low midline incision was made and a cryoinjury of detrusor was induced by placing an aluminum rod (chilled with dry ice) for 30 s on the serosal side of the bladder filled with 1 mL sterile saline bilaterally. Awake cystometrogram (CMG), molecular and histopathology studies were performed on Day 8 or 15 after cryoinjury. RESULTS Significant urodynamic, histological, and molecular changes induced by cryoinjury of rat detrusor were detected on Day 8 and decrease in the contraction amplitude (54.3%), a significant increase in wet bladder weight (64.1%), edematous changes, muscle thinning and downregulation of α-SMA, IL-6, and upregulation of COX-2. LESW reversed the cryoinjury induced histological and COX-2 expression to cause a 49.0% increase in the contraction amplitude (P < 0.05). LESW induced cell proliferation was revealed by increased CD31 and Ki67 immunostaining. The effect of cryoinjury on urodynamic and histological changes was maintained till Day 15. CONCLUSION The cryoinjury of rat detrusor models myogenic DU, which is partially reversed by LESW. LESW may afford a simple, non-invasive modality to facilitate tissue regeneration and improve voiding function in myogenic detrusor underactivity.
Collapse
Affiliation(s)
- Yao-Chi Chuang
- Department of Urology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan.,The Center of Excellence in Shockwave Medicine and Tissue Regeneration, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Pradeep Tyagi
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Hung-Jen Wang
- Department of Urology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan.,The Center of Excellence in Shockwave Medicine and Tissue Regeneration, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chao-Cheng Huang
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chih-Chieh Lin
- Department of Urology, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Urology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | | |
Collapse
|
6
|
|
7
|
Silwal Gautam S, Imamura T, Ishizuka O, Lei Z, Yamagishi T, Yokoyama H, Minagawa T, Ogawa T, Kurizaki Y, Kato H, Nishizawa O. Implantation of autologous adipose-derived cells reconstructs functional urethral sphincters in rabbit cryoinjured urethra. Tissue Eng Part A 2014; 20:1971-9. [PMID: 24568564 DOI: 10.1089/ten.tea.2013.0491] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We investigated the ability of autologous adipose-derived cells injected into cryoinjured rabbit urethras to improve urinary continence and explored the possible mechanisms by which it occurred. Adipose tissue was harvested from the perivesical region of nine 10-week-old female New Zealand White rabbits and cultured for 7 days. Immediately after harvesting the tissue, we injured the internal urethral orifice by spraying liquid nitrogen for 20 s. The cultured cells expressed the mesenchymal cell marker STRO1, but not muscle cell markers myoglobin or smooth muscle actin (SMA). Just before implantation, the adipose-derived cells were labeled with the PKH26 fluorescent cell linker. Autologous 2.0×10(6) adipose-derived cells (five rabbits) or a cell-free control solution (four rabbits) was injected around the cryoinjured urethras at 7 days after injury. Fourteen days later, the leak point pressure (LPP) was measured, and the urethras were harvested for immunohistochemical analyses. At 14 days after implantation, LPP of the cell-implanted group was significantly higher compared with the cell-free control group (p<0.05). In immunohistochemical examination, the reconstructed skeletal and smooth muscle areas in the cell-implanted regions were significantly more developed than those in controls (p<0.01). Implanted PKH26-labeled adipose-derived cells were immunohistochemically positive for myoglobin, SMA, and Pax7 antibodies, which are markers for skeletal muscles, smooth muscles, and myoblast progenitor cells, respectively. In addition, these implanted cells were positive for the nerve cell markers, tubulin β3, S100, and the vascular endothelial cell marker, von Willebrand factor. Furthermore, some of the implanted cells were positive for the transforming growth factor β1, nerve growth factor, and vascular endothelial growth factor. In conclusion, implantation of autologous adipose-derived cells into the cryoinjured rabbit urethras promoted the recovery of urethral function by myogenic differentiation, neuroregeneration, and neoangiogenesis of the implanted cells and/or the surrounding tissues as well as by bulking effects. Thus, treatment of human radical prostatectomy-related stress urinary incontinence by adipose-derived cell implantation could have significant therapeutic effects.
Collapse
Affiliation(s)
- Sudha Silwal Gautam
- 1 Department of Lower Urinary Tract Medicine, Shinshu University School of Medicine , Matsumoto, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Tseng LH. Advances in the methods for discovering novel painful bladder syndrome therapies. Expert Opin Drug Discov 2014; 9:423-32. [DOI: 10.1517/17460441.2014.894975] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
9
|
Kanno Y, Mitsui T, Sano H, Kitta T, Moriya K, Nonomura K. Contribution of bone marrow-derived mesenchymal stem cells to the morphological changes in the bladder after partial outlet obstruction: A preliminary study. Int J Urol 2014; 21:714-8. [DOI: 10.1111/iju.12406] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 01/07/2014] [Indexed: 01/14/2023]
Affiliation(s)
- Yukiko Kanno
- Department of Urology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Takahiko Mitsui
- Department of Urology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Hiroshi Sano
- Department of Urology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Takeya Kitta
- Department of Urology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Kimihiko Moriya
- Department of Urology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - Katsuya Nonomura
- Department of Urology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| |
Collapse
|
10
|
Sumino Y, Mimata H. Regenerative medicine as a new therapeutic strategy for lower urinary tract dysfunction. Int J Urol 2013; 20:670-5. [PMID: 23594124 DOI: 10.1111/iju.12137] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 02/05/2013] [Indexed: 12/30/2022]
Abstract
The use of regenerative medicine for the treatment of organic and functional disorders intractable to conventional treatment has increased worldwide. This innovative medical field might particularly hold promise for the treatment of life-threatening diseases or healing of irreplaceable organs, such as the heart, liver and brain. Dysfunction of the urogenital tract and associated organs other than the kidney might not have immediate life-threatening implications; furthermore, the effectiveness of alternative therapy, such as enterocystoplasty for bladder cancer, has been shown. Therefore, most physicians or scientists do not give much importance to these disorders. However, urological disease has increased in developed societies in recent years. Furthermore, medical costs have also escalated. Disorders of the lower urinary tract, such as urinary disturbance or incontinence, can lead to other complications, impairing quality of life and ultimately increasing short- and long-term medical expenses. Regenerative medicine might hold potential solutions to these problems. Recent advances in urogenital regenerative medicine are reviewed in the present article, with particular reference to lower urinary tract reconstruction. The potential of regenerative medicine for the treatment of intractable lower urinary tract dysfunction compared with conventional treatment is also discussed.
Collapse
Affiliation(s)
- Yasuhiro Sumino
- Department of Urology, Oita University Faculty of Medicine, Oita, Japan
| | | |
Collapse
|
11
|
Imamura T, Ishizuka O, Lei Z, Hida S, Sudha GS, Kato H, Nishizawa O. Bone Marrow-Derived Cells Implanted into Radiation-Injured Urinary Bladders Reconstruct Functional Bladder Tissues in Rats. Tissue Eng Part A 2012; 18:1698-709. [DOI: 10.1089/ten.tea.2012.0061] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Tetsuya Imamura
- Department of Lower Urinary Tract Medicine, Shinshu University School of Medicine, Nagano, Japan
| | - Osamu Ishizuka
- Department of Lower Urinary Tract Medicine, Shinshu University School of Medicine, Nagano, Japan
- Department of Urology, Shinshu University School of Medicine, Nagano, Japan
| | - Zhang Lei
- Department of Urology, Shinshu University School of Medicine, Nagano, Japan
| | - Shigeaki Hida
- Department of Molecular Oncology, Institute on Aging and Adaptation, Shinshu University Graduate School of Medicine, Nagano, Japan
| | | | - Haruaki Kato
- Department of Urology, Shinshu University School of Medicine, Nagano, Japan
| | - Osamu Nishizawa
- Department of Lower Urinary Tract Medicine, Shinshu University School of Medicine, Nagano, Japan
- Department of Urology, Shinshu University School of Medicine, Nagano, Japan
| |
Collapse
|
12
|
Zhang R, Jack GS, Rao N, Zuk P, Ignarro LJ, Wu B, Rodríguez LV. Nuclear fusion-independent smooth muscle differentiation of human adipose-derived stem cells induced by a smooth muscle environment. Stem Cells 2012; 30:481-90. [PMID: 22213158 DOI: 10.1002/stem.1023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Human adipose-derived stem cells hASC have been isolated and were shown to have multilineage differentiation capacity. Although both plasticity and cell fusion have been suggested as mechanisms for cell differentiation in vivo, the effect of the local in vivo environment on the differentiation of adipose-derived stem cells has not been evaluated. We previously reported the in vitro capacity of smooth muscle differentiation of these cells. In this study, we evaluate the effect of an in vivo smooth muscle environment in the differentiation of hASC. We studied this by two experimental designs: (a) in vivo evaluation of smooth muscle differentiation of hASC injected into a smooth muscle environment and (b) in vitro evaluation of smooth muscle differentiation capacity of hASC exposed to bladder smooth muscle cells. Our results indicate a time-dependent differentiation of hASC into mature smooth muscle cells when these cells are injected into the smooth musculature of the urinary bladder. Similar findings were seen when the cells were cocultured in vitro with primary bladder smooth muscle cells. Chromosomal analysis demonstrated that microenvironment cues rather than nuclear fusion are responsible for this differentiation. We conclude that cell plasticity is present in hASCs, and their differentiation is accomplished in the absence of nuclear fusion.
Collapse
Affiliation(s)
- Rong Zhang
- Department of Urology, Sichuan University, Chengdu, Sichuan, China
| | | | | | | | | | | | | |
Collapse
|
13
|
Imamura T, Ishizuka O, Nishizawa O. Autologous Bone Marrow-Derived Cells Regenerate Urethral Sphincters. Low Urin Tract Symptoms 2012; 4 Suppl 1:87-94. [PMID: 26676706 DOI: 10.1111/j.1757-5672.2011.00136.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Regenerative medicine based on tissue engineering and/or stem cell therapy techniques has the potential to improve irreversibly damaged tissues. Surgical injury to the lower urinary tract can occur as a result of radical prostatectomy or bladder neck surgery. Regeneration of urethral sphincters could be an effective treatment for post-surgical intrinsic sphincter deficiency (ISD)-related urinary incontinence. The replacement, enhancement, and/or recovery the urethral sphincter striated and smooth muscles could increase urethral closure pressure to help patients regain continence. Stem cells from muscle-derived satellite or adipose-derived mesenchymal cells provide temporary improvement in urethral closure pressure but do not reconstruct the muscle layer structures. Our strategy to accomplish regeneration of urethral sphincters is the utilization of autologous bone marrow-derived cells. We have developed a freeze injury model of ISD in rabbits. Freezing of the urinary sphincter causes loss of the majority of striated and smooth muscle cells, and causes a significant decrease in leak point pressure. In this review, we show that the autologous bone marrow-derived cells implanted within the freeze-injured sphincters differentiate into striated or smooth muscle cells. These cells then develop to reconstitute muscle layer structures within the sphincter. Furthermore, the leak point pressure of cell-implanted rabbits is significantly higher than that of cell-free injected controls. We conclude that implantation of autologous bone marrow-derived cells could be an effective treatment for human post-surgical ISD-related urinary incontinence.
Collapse
Affiliation(s)
- Tetsuya Imamura
- Department of Lower Urinary Tract Medicine, Shinshu University School of Medicine, Nagano, JapanDepartment of Urology, Shinshu University School of Medicine, Nagano, Japan
| | - Osamu Ishizuka
- Department of Lower Urinary Tract Medicine, Shinshu University School of Medicine, Nagano, JapanDepartment of Urology, Shinshu University School of Medicine, Nagano, Japan
| | - Osamu Nishizawa
- Department of Lower Urinary Tract Medicine, Shinshu University School of Medicine, Nagano, JapanDepartment of Urology, Shinshu University School of Medicine, Nagano, Japan
| |
Collapse
|
14
|
Watanabe T, Maruyama S, Yamamoto T, Kamo I, Yasuda K, Saka Y, Ozaki T, Yuzawa Y, Matsuo S, Gotoh M. Increased urethral resistance by periurethral injection of low serum cultured adipose-derived mesenchymal stromal cells in rats. Int J Urol 2011; 18:659-66. [PMID: 21707765 DOI: 10.1111/j.1442-2042.2011.02795.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVES To evaluate the effects of a periurethral injection of low serum cultured adipose tissue-derived mesenchymal stromal cells (LASC) and to develop a new autologous cell therapy for stress urinary incontinence. METHODS F344 rats were divided into three groups as based on the periurethral injection of LASC, GAX collagen or vehicle (control). At 2 and 4 weeks after injection, leak point pressure (LPP) was measured before and after transection of the pelvic nerves. For cell tracking, LASC of green fluorescent protein transgenic rats were injected into nude rats. RESULTS At 2 weeks, both the LASC and collagen groups showed significantly higher LPP than the control group. At 4 weeks, the increase in LPP in the LASC group remained, whereas LPP in the collagen group decreased to baseline levels. In the absence of the urethral closure reflex after transection of the pelvic nerves, LPP in the LASC group was significantly higher than that in the other two groups. Histologically, the size of the urethral lumen was smaller in the LASC group than the collagen group. At 4 weeks, most of the LASC were positive for myogenic antigens including α-smooth muscle actin, desmin and calponin I. CONCLUSIONS Periurethral injection of autologous LASC capable of myogenic differentiation made a greater contribution to the increase in urethral resistance than did the conventional collagen bulk injection. Thus, its use for treatment of stress urinary incontinence can be postulated.
Collapse
Affiliation(s)
- Tatsuhito Watanabe
- Department of Nephrology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Imamura T, Ishizuka O, Kinebuchi Y, Kurizaki Y, Nakayama T, Ishikawa M, Nishizawa O. Implantation of autologous bone-marrow-derived cells reconstructs functional urethral sphincters in rabbits. Tissue Eng Part A 2011; 17:1069-81. [PMID: 21091339 DOI: 10.1089/ten.tea.2010.0478] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The purpose of this study was to determine if implantation of autologous bone-marrow-derived cells has the potential to treat stress urinary incontinence caused by intrinsic sphincter deficiency. Bone marrow cells harvested from femurs of New Zealand White rabbits were cultured for 10 days. Seven days before implantation, the urethral sphincters located at the internal urethral orifice were cryo-injured by spraying liquid nitrogen for 15 s. The cultured autologous bone-marrow-derived cells were implanted 7 days after cryo-injury. For controls, cell-free solutions were injected. At 7 and 14 days after implantation, leak point pressures were determined and the urethral sphincters were examined by immunohistochemistry. At 7 and 14 days, the cell-implanted regions contained numerous striated and smooth muscle-like cells expressing myoglobin and smooth muscle actin, respectively. The proportions of myoglobin- and smooth muscle actin-expressing areas in both the 7- and 14-day cell-implanted regions were significantly higher than in controls. By 14 days, these differentiated cells formed contacts with similar cells, creating layered muscle structures. At that time, the leak point pressure of the cell-implanted rabbits was significantly higher than that of the controls. In conclusion, autologous bone-marrow-derived cells can reconstruct functional urethral sphincters.
Collapse
Affiliation(s)
- Tetsuya Imamura
- Department of Urology, Shinshu University School of Medicine, Matsumoto, Japan.
| | | | | | | | | | | | | |
Collapse
|
16
|
IMAMURA T, ISHIZUKA O, YAMAMOTO T, GOTOH M, NISHIZAWA O. Bone Marrow-Derived Cells Implanted into Freeze-Injured Urinary Bladders Reconstruct Functional Smooth Muscle Layers. Low Urin Tract Symptoms 2010; 2:1-10. [DOI: 10.1111/j.1757-5672.2010.00066.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
17
|
Minagawa T, Imamura T, Igawa Y, Aizawa N, Ishizuka O, Nishizawa O. Differentiation of smooth muscle cells from human amniotic mesenchymal cells implanted in the freeze-injured mouse urinary bladder. Eur Urol 2010; 58:299-306. [PMID: 20064685 DOI: 10.1016/j.eururo.2009.12.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2009] [Accepted: 12/25/2009] [Indexed: 11/24/2022]
Abstract
BACKGROUND The multipotency of human amniotic mesenchymal cells (HAMCs) has been reported, but the role of HAMCs in urinary tract regeneration is unknown. OBJECTIVE The aim of the study was to determine if cells derived from HAMCs support the structural and functional reconstruction of freeze-injured mouse bladders. DESIGN, SETTING, AND PARTICIPANTS HAMCs were harvested from an amnion membrane, and cells were cultured for 7 d prior to injection into the freeze-injured bladder walls of nude mice. INTERVENTION Three days prior to implantation, the posterior bladder walls were freeze injured for 30s. The cultured HAMC-derived cells (0.5 x 10(5) cells per 50 microl) were implanted into the injured regions. Control bladders received a cell-free injection. At 1, 2, 4, and 6 wk after the cell implantation, the experimental bladders were extirpated. MEASUREMENTS The bladder tissues were examined by immunohistochemistry for alpha-smooth muscle actin (SMA). The HAMC-derived cells were detected by antihuman nuclei antibody (HuNu). Separately, bladder muscle strips were examined for contractile responses to potassium. RESULTS AND LIMITATIONS At 1 wk after implantation, the HAMC-derived cells, which were detected by HuNu, differentiated into muscular layers composed of SMA-positive cells. From 2 to 6 wk after implantation, abundant layers of SMA-positive and HuNu-positive cells developed. In control bladders, few SMA-positive cells remained at the injured regions at 1 wk, but by 6 wk, more were present. At 1 wk, the contractile responses to potassium of the cell-implanted bladders were significantly higher than those of the control-injected ones. Control-injected bladders also recovered by 6 wk, but the rate of recovery was slower. CONCLUSIONS Freeze-injured mouse bladders implanted with HAMC-derived cells recovered morphology and function faster than control-injected bladders.
Collapse
Affiliation(s)
- Tomonori Minagawa
- Department of Urology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Japan.
| | | | | | | | | | | |
Collapse
|