This meta-analysis showed that large animal models are valid to predict the outcome of clinical trials. Our results showed that cell therapy is safe and leads to a preserved LVEF. Future trials should focus on cell types other than BM-MNC, large infarction, and strategies to obtain sustained effects.

their subpopulations might be more effective. [4][5][6] Mesenchymal precursor cells (MPCs) constitute a Stro-3 immune-selected, immature subfraction of bone marrow-derived MSCs. Objective: This study assessed the safety, feasibility, and efficacy of intracoronary delivery of allogeneic MPCs directly after acute myocardial infarction in sheep. Methods and Results:

Rationale:In regenerative therapy for ischemic heart disease, use of both autologous and allogeneic stem cells has been investigated. Autologous cell can be applied without immunosuppression, but availability is restricted, and cells have been exposed to risk factors and aging. Allogeneic cell therapy enables preoperative production of potent cell lines and immediate availability of cell products, allowing off-the-shelf therapy. It is unknown which cell source is preferred with regard to improving cardiac function.Objective: We performed a meta-analysis of preclinical data of cell therapy for ischemic heart disease. Methods and Results:We conducted a systematic literature search to identify publications describing controlled preclinical trials of unmodified stem cell therapy in large animal models of myocardial ischemia. Data from 82 studies involving 1415 animals showed a significant improvement in mean left ventricular ejection fraction in treated compared with control animals (8.3%, 95% confidence interval, 7.1-9.5; P<0.001). Meta-regression revealed a similar difference in left ventricular ejection fraction in autologous (8.8%, 95% confidence interval, 7.3-10.3; n=981) and allogeneic (7.3%, 95% confidence interval, 4.4-10.2, n=331; P=0.3) cell therapies. Conclusions: Autologous and allogeneic cell therapy for ischemic heart disease show a similar improvement in