title: Hypoxic adipose mesenchymal stem cells derived conditioned medium protects myocardial infarct in rat.
abstract: OBJECTIVE
  The aim of this study was to explore the impact of normoxic and hypoxic cell-culture conditions on the expression and secretion of adipose mesenchymal stem cells (ADMSCs)-derived paracrine molecules, and to evaluate the cardioprotective role of hypoxic condition medium (hypoCM) in vivo.
  
  
  METHODS
  Semi-quantitative reverse transcriptase polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA) analyses of normoxic and hypoxic ADMSCs and their conditioned medium fractions. Then, the effect of hypoCM on cardiomyocytes proliferation and migration was assessed. Moreover, a rat model of myocardial infarct (MI) was established to test the therapeutic effect of hypoCM in vivo.
  
  
  RESULTS
  ADMSCs expressed and secreted significantly higher amounts of vascular endothelial growth factor (VEGF), hepatocyte growth factor (HGF) and stromal derived factor-1 (SDF-1 or CXCL12) under hypoxic conditions. Furthermore, compared with the vehicle control, hypoCM significantly enhanced the proliferation and migration of cardiomyocytes. Consistent with the in vitro data, hypoCM decreased the infarct size, apoptosis index and apoptosis related protein in the rat MI model.
  
  
  CONCLUSIONS
  These findings suggest that ADMSCs promote rat MI via hypoxia-enhanced paracrine.
authors.affiliation: Integrated Department of South Building of Chinese PLA General Hospital, Beijing, China. lleim@sina.com.
authors.forename: J
authors.initials: J
authors.lastname: He
authors.forename: Y
authors.initials: Y
authors.lastname: Cai
authors.forename: L M
authors.initials: LM
authors.lastname: Luo
authors.forename: H B
authors.initials: HB
authors.lastname: Liu
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism*; D000818:Animals; D017209:Apoptosis / Q000187:drug effects / Q000502:physiology; D002316:Cardiotonic Agents / Q000008:administration & dosage / Q000378:metabolism; D015687:Cell Hypoxia / Q000187:drug effects / Q000502:physiology; D049109:Cell Proliferation / Q000187:drug effects / Q000502:physiology; D054377:Chemokine CXCL12 / Q000378:metabolism; D017077:Culture Media, Conditioned / Q000378:metabolism* / Q000494:pharmacology; D017228:Hepatocyte Growth Factor / Q000378:metabolism; D006801:Humans; D008297:Male; D059630:Mesenchymal Stem Cells / Q000378:metabolism*; D009203:Myocardial Infarction / Q000378:metabolism* / Q000517:prevention & control*; D032383:Myocytes, Cardiac / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar
chemical_list: C515255:CXCL12 protein, human; D002316:Cardiotonic Agents; D054377:Chemokine CXCL12; D017077:Culture Media, Conditioned; C066855:HGF protein, human; D017228:Hepatocyte Growth Factor