Autologous Bone Marrow-Derived Mononuclear Cell Therapy Prevents the Damage of Viable Myocardium and Improves Rat Heart Function Following Acute Anterior Myocardial Infarction

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Background We examined the effects of bone marrow-derived mononuclear cells (BMDMNCs) on preventing viable myocardium damage from myocardial infarction (MI) in a rat MI model. Methods and Results Saline (group 1) or BMDMNCs (group 2) were implanted into the infarct area (IA) of 1-week-old anterior wall MI Sprague-Dawley (SD) rats. Twenty SD rats without MI served as the controls (group 3). The results demonstrated that in remote viable myocardium, the integrated area (μm^2) of connexin43 spots was lower, whereas the number of apoptotic nuclei were higher in group 1 than in groups 2 and 3 on day 90 following BMDMNC implantation (all p<0.001). Additionally, the number of vessels and survival myocardium in the IA was lower in group 1 than in groups 2 and 3 (all p<0.005). Furthermore, the mRNA expressions of nitric oxide synthase, interleukin-8/Gro-α, interleukin-10 and matrix metalloproteinase-9 were higher in group 2 than in groups 1 and 3 in peri-IA (all p<0.05). On days 42 and 90, the left ventricular (LV) function was lower in group 1 than in groups 2 and 3 (p<0.001). Conclusions Autologous BMDMNC therapy improves LV function, and mitigates molecular and cellular perturbation following MI.
社団法人日本循環器学会の論文
2008-07-20