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Efficiency of Intramyocardial Injections of Autologous Bone Marrow Mononuclear Cells in Patients with Ischemic Heart Failure: A Randomized Study

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Abstract

Intramyocardial transplantation of autologous bone marrow mononuclear cells (BMMC) is believed to be a promising method for the treatment of patients with chronic ischemic heart disease. The aim of this study was to evaluate long-term results of intramyocardial bone marrow cell transplantation in patients with severe ischemic heart failure. One hundred nine patients with chronic myocardial infarction and end-stage chronic heart failure were randomized into two groups: 55 patients received intramyocardial BMMC injection and 54 received optimal medical therapy. The NOGA system (Biosense-Webster) was used to administer 41 ± 16 × 106 BMMC into the border zone of myocardial infarction. None of the patients developed periprocedural complications following BMMC injections. The injections led to improvement of CCS class (3.1 ± 0.4 to 1.6 ± 0.6 after 6 months and 1.6 ± 0.4 after 12 months; p = 0.001) and NYHA functional class (3.3 ± 0.2 to 2.3 ± 0.2 after 6 months and 2.5 ± 0.1 after 12 months; p = 0.006). Left ventricular ejection fraction increased significantly in the BMMC group (27.8 ± 3.4% vs 32.3 ± 4.1%; p = 0.04) while it tended to decrease in the control group (26.8 ± 3.8% to 25.2 ± 4.1%; p = 0.61). Summed rest score improved in the BMMC group after 12 months (30.2 ± 5.6 to 27.8 ± 5.1; p = 0.032). The improvement of stress score was more noticeable (34.5 ± 5.4 to 28.1 ± 5.2; p = 0.016). Neither stress nor rest score changed in patients numbers on medical therapy. In BMMC group 6 (10.9%) patients died at 12-month follow-up compared with 21 (38.9%) in control group (log-rank test, p = 0.0007). Intramyocardial bone marrow cell transplantation to patients with ischemic heart failure is safe and improved survival, clinical symptoms, and has beneficial effect on LV function

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Correspondence to Evgeny Pokushalov.

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Pokushalov, E., Romanov, A., Chernyavsky, A. et al. Efficiency of Intramyocardial Injections of Autologous Bone Marrow Mononuclear Cells in Patients with Ischemic Heart Failure: A Randomized Study. J. of Cardiovasc. Trans. Res. 3, 160–168 (2010). https://doi.org/10.1007/s12265-009-9123-8

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  • DOI: https://doi.org/10.1007/s12265-009-9123-8

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