CCL, C-C motif chemokine ligand; CCR2, C-C chemokine receptor 2; DDR2, discoidin domain receptor 2; DMEM, Dulbecco's modified Eagle medium; EDV, end-diastolic volume; EF, ejection fraction; ESV, end-systolic volume; HF, heart failure; IL, interleukin; INF, interferon; LV, left ventricular; Lin, lineage; MI, myocardial infarction; MSC, mesenchymal stem cell; PBS, phosphate-buffered saline; PCR, polymerase chain reaction; PDGF, platelet-derived growth factor; PDGFR, platelet-derived growth factor receptor; TGFß, transforming growth factor beta; WGA, wheat germ agglutinin; cDNA, complementary DNA; cMSC, cardiac mesenchymal stem cell; cardiac remodeling; fibrosis; heart failure; mRNA, messenger RNA; mesenchymal stem cells; myocardial inflammation; myofibroblasts; platelet-derived growth factor receptor; siRNA, small interfering RNA; α-SMA, alpha smooth muscle actin