Between 2003 and 2011, 17 patients with heart failure were treated with stem cells as part of our Foundation’s Regenerative Medicine program. In several centers and countries 4 with ischemic cardiomyopathy of which 3 were surgically implanted with autologous bone marrow stem cells (ABMSC) plus bypass surgery. One patient was treated with hyperbaric medicine plus bypass surgery. Patients with idiopathic cardiomyopathy were implanted surgically with 2 different types of stem cells. Ten patients were implanted with stem cells derived from human fetuses (HFDSCs) and three patients with autologous bone marrow stem cells (ABMSC). The ejection fractions of the coronary artery bypass graft off pump OPCAB (control group) versus coronary artery bypass group off pump OPCAB plus stem cell transplantation were as followsin the entire serie: preoperative, 30.7% +/- 2.5% compared to 29.4% +/- 3.6%; 1 month, 36.4% +/- 2.6% versus 42.1% +/- 3.5%; 3 months, 36.5% +/- 3.0% vs. 45.5% +/- 2.2%; And 6 months, 37.2% +/- 3.4% versus 46.1% +/- 1.9% (p <0.001). The first patient performed at our center in Argentina in this series is alive and asymptomatic 15 years after implantation, and the rest of this series we do not have current data. A patient without visible vessels in the anterior wall of the left ventricle was treated with 18 hyperbaric chamber sections from one hour at 1.4 AT. After creating angiogenesis, the patient was operated on receiving 2 grafts (mammary and venous) without extracorporeal circulation in the anterior descending artery and diagonal artery. The preoperative ejection fraction was 33% at 90 months of follow up the ejection fraction was 58%. The patient at 90 months was asymptomatic. Of the idiopathic heart disease group, nine patients underwent median sternotomy, and received human fetal stem cells (HFDSCs from ectopic pregnancy or spontaneous abortion, three patients received autologous bone marrow stem cells ABMSC) and 1HFDSCs for Minimally Invasive Surgery.
Patients with HFDSC, compared to baseline, improved: The mean (±SD) NYHA class decreased from 3.4 ± 0.5 to 1.33 ± 0.5 (P = 0.001); Mean EF increased 31%, from 26.6% ± 4.0% to 34.8% ± 7.2% (p = 0.005); the yield in ETT increased 291.3%, from 4.25 minutes to 16.63 minutes (128.9% in metabolic equivalents, 2.45 to 5.63) (P <0.0001); the mean LVEDD decreased 15%, from 6.85 ± 0.6cm to 5.80 ± 0.58cm (P <0.001); the mean performance on the 6-minute walk test increased 43.2%, from 251 ± 113.1 seconds to 360 ± 0 seconds (P = 0.01); the mean distance increased 64.4%, from 284.4 ± 144.9m to 468.2 ± 89.8m (P = 0.004); and the mean score in the Minnesota congestive HF test decreased from 71 ± 27.3 to 6 ± 5.9 (p <0.001). Kaplan-Maier’s probability of survival at 40 months was 66%. No rejection or cancer was observed at follow-up, in this series follow-up was discontinued at 4 years. In idiopathic patients receiving autologous cells by Mininvasive technique preoperative NYHA was 3.6 (+/- 0.70) 6 months after receiving stem cell therapy. The mean value of the functional class was 1.9 (+/- 0.90) (p <0.005). ) showing marked clinical improvement. The preimplantation ejection fraction was 28% (+/- 3.6%) and at 6 months 44% (+/- 4.7%) (p <0.005). There was a similar change in ventricular diameters: After 6 months LVESV went from 50mm (+/- 3.3) to 42mm (+/- 4.5) (p <0.05). Two of the three patients in this group received re-synchronization therapy; one died at 10 years and 4 months, another at age 11 and another one alive at 12 years of the implant. More experience should be performed with different techniques and cells to find the appropriate treatment in this type of patients.
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