title: Transplantation of mesenchymal stem cells within a poly(lactide-co-epsilon-caprolactone) scaffold improves cardiac function in a rat myocardial infarction model.
abstract: OBJECTIVE
  Cardiac tissue engineering has been proposed as an appropriate method to repair myocardial infarction (MI). Evidence suggests that a cell with scaffold combination was more effective than a cell-only implant. Nevertheless, to date, there has been no research into elastic biodegradable poly(lactide-co-epsilon-caprolactone) (PLCL) scaffolds. The aim of this study was to investigate the effect of mesenchymal stem cells (MSCs) with elastic biodegradable PLCL scaffold transplants in a rat MI model.
  
  
  RESULTS
  Ten days after inducing MI through the cryoinjury method, a saline control, MSC, PLCL scaffold, or MSC-seeded PLCL scaffold was transplanted onto the hearts. Four weeks after transplantation, cardiac function and histology were evaluated. Transplanted MSCs survived and differentiated into cardiomyocytes in the injured region. Left ventricular ejection fraction in the MSC+PLCL group increased by 23% compared with that in the saline group; it was also higher in the MSC group. The infarct area in the MSC+PLCL group was decreased by 29% compared with that in the saline group; it was also reduced in the MSC group.
  
  
  CONCLUSIONS
  Mesenchymal stem cells plus PLCL should be an excellent combination for cardiac tissue engineering.
authors.affiliation: Division of Cardiology, College of Medicine, Hanyang University, 17 Haengdang-dong, Seongdong-ku, Seoul 133-791, South Korea.
authors.forename: Jiyong
authors.initials: J
authors.lastname: Jin
authors.forename: Sung In
authors.initials: SI
authors.lastname: Jeong
authors.forename: Young Min
authors.initials: YM
authors.lastname: Shin
authors.forename: Kwang Suk
authors.initials: KS
authors.lastname: Lim
authors.forename: Heung soo
authors.initials: Hs
authors.lastname: Shin
authors.forename: Young Moo
authors.initials: YM
authors.lastname: Lee
authors.forename: Hyun Chul
authors.initials: HC
authors.lastname: Koh
authors.forename: Kyung-Soo
authors.initials: KS
authors.lastname: Kim
mesh_terms: D000818:Animals; D004452:Echocardiography; D008297:Male; D045164:Mesenchymal Stem Cell Transplantation; D009124:Muscle Proteins / Q000378:metabolism; D009203:Myocardial Infarction / Q000378:metabolism / Q000503:physiopathology / Q000628:therapy*; D009206:Myocardium / Q000378:metabolism; D011091:Polyesters; D051381:Rats; D011917:Rats, Inbred Lew; D023822:Tissue Engineering; D054457:Tissue Scaffolds; D016277:Ventricular Function, Left
chemical_list: D009124:Muscle Proteins; D011091:Polyesters; C062968:lactide-caprolactone copolymer