title: Experimental study of therapy of bone marrow mesenchymal stem cells or muscle-like cells/calcium alginate composite gel for the treatment of stress urinary incontinence.
abstract: OBJECTIVE
  To explore the myoblast formation around the urethra and increase in urethral resistance of bone marrow mesenchymal stem cells or muscle-like cells/calcium alginate composite gel injection therapy and effect on LPP in SUI rat model.
  
  
  METHODS
  Isolation, cultivation, and identification of SD rat bone marrow mesenchymal stem cell were performed. 5-Azacytidine was introduced to induce muscle-like cells. SUI was produced in 72 6-week-old female Sprague-Dawley rats, which were divided into four groups: stem cell-gel group, muscle-like cell-gel group, Gel group, and mock control group. One, 4, and 8 weeks after injection, the leak point pressure (LPP) was measured. HE staining of Desmin and α-skeletal muscle actin (α-SMA) were performed.
  
  
  RESULTS
  At 4 and 8 weeks after injection in stem cell-gel group and muscle-like cell-gel group, growth of blood vessels gradually increased at gel edge, BMSC, and muscle-like cells gathered around the new blood vessels observed by fluorescence tracer, muscle-like cells grew into elongated spindle-like cells, Desmin, and α-SMA staining were obviously positive expression. LPP determinations of the mock control group compared with the Gel groups were significantly different.
  
  
  CONCLUSIONS
  Compound of BMSC, muscle-like cells, and calcium alginate composite gel has the potential to differentiate into muscle cells in the microenvironment of SUI rat model. It is found by LPP measurement that the correlation between the increase in urethral resistance and the volume effect of calcium alginate gel is high.
authors: Department of Urology, Jinhua People's Hospital, Jinhua, China. dxwllp@163.com
authors: Xiao-Wen
authors: XW
authors: Du
authors: Hui-Ling
authors: HL
authors: Wu
authors: Yong-Feng
authors: YF
authors: Zhu
authors: Jun-Biao
authors: JB
authors: Hu
authors: Fan
authors: F
authors: Jin
authors: Rui-Ping
authors: RP
authors: Lv
authors: Si
authors: S
authors: Sun
authors: Hao-Yu
authors: HY
authors: Wang
authors: Jian-Wei
authors: JW
authors: Xu
mesh_terms: D000199:Actins / Q000378:metabolism; D000464:Alginates / Q000737:chemistry*; D000818:Animals; D000831:Animals, Newborn; D015415:Biomarkers / Q000378:metabolism; D002454:Cell Differentiation; D002478:Cells, Cultured; D003893:Desmin / Q000378:metabolism; D004195:Disease Models, Animal; D005260:Female; D005782:Gels; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D007150:Immunohistochemistry; D045164:Mesenchymal Stem Cell Transplantation; D032446:Myoblasts / Q000378:metabolism / Q000473:pathology / Q000637:transplantation*; D010641:Phenotype; D011312:Pressure; D051381:Rats; D017207:Rats, Sprague-Dawley; D012038:Regeneration; D055153:Stem Cell Niche; D013997:Time Factors; D023822:Tissue Engineering / Q000379:methods; D054457:Tissue Scaffolds; D014521:Urethra / Q000378:metabolism / Q000473:pathology / Q000503:physiopathology*; D014550:Urinary Incontinence, Stress / Q000378:metabolism / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D014563:Urodynamics
chemical_list: D000199:Actins; D000464:Alginates; D015415:Biomarkers; D003893:Desmin; D005782:Gels; D020723:Glucuronic Acid; D006603:Hexuronic Acids; C498862:Acta2 protein, rat