Therapeutic effects of late outgrowth endothelial progenitor cells or mesenchymal stem cells derived from human umbilical cord blood on XXXX repair.

@entity82 @entity63 @entity1188 @entity35 @entity583
BACKGROUND: This study sought to systematically investigate the derivation of late outgrowth endothelial progenitor cells (late EPC) and mesenchymal stem cells (MSC) from umbilical cord blood (UCB) and to examine their therapeutic effects on @entity583 ( @entity583 ). METHODS: The expression of angiogenic genes was determined by qRT-PCR. @entity583 ( @entity583 ) was induced in @entity35 , and cells were directly transplanted into the border regions of @entity63 heart tissue. RESULTS: Culture of UCB mononuclear cells yielded two distinct types of cells by morphology after 2weeks in the same culture conditions. These cells were identified as late EPC and MSC, and each was intramyocardially injected into @entity35 hearts after induction of @entity583 . Echocardiography and histologic analyses demonstrated that both EPC and MSC improved cardiac function and enhanced vascularization, although @entity82 was reduced only in the EPC transplanted hearts. Different paracrine factors were enriched in EPC and MSC. However, once injected into the hearts, they induced similar types of paracrine factors in the heart. Transplanted EPC or MSC were mostly localized at the perivascular areas. This study demonstrated that EPC and MSC can be simultaneously derived from UCB under the same initial culture conditions, and that common paracrine factors are involved in the repair of @entity583 . CONCLUSION: Late EPC and MSC are effective for @entity1188 repair, apparently mediated through common humoral mechanisms.
