Journal of Cardiovascular Translational Research

, Volume 4, Issue 1, pp 106–113

Early Increase in Myocardial Perfusion After Stem Cell Therapy in Patients Undergoing Incomplete Coronary Artery Bypass Surgery

  • Luís Henrique Wolff Gowdak
  • Isolmar Tadeu Schettert
  • Carlos Eduardo Rochitte
  • Luiz Augusto Ferreira Lisboa
  • Luís Alberto Oliveira Dallan
  • Luiz Antônio Machado César
  • Sérgio Almeida de Oliveira
  • José Eduardo Krieger
Article

DOI: 10.1007/s12265-010-9234-2

Cite this article as:
Gowdak, L.H.W., Schettert, I.T., Rochitte, C.E. et al. J. of Cardiovasc. Trans. Res. (2011) 4: 106. doi:10.1007/s12265-010-9234-2

Abstract

Incomplete revascularization is associated with worse long-term outcomes. Autologous bone marrow cells (BMC) have recently been tested in patients with severe coronary artery disease. We tested the hypothesis that intramyocardial injection of autologous BMC increases myocardial perfusion in patients undergoing incomplete coronary artery bypass grafting (CABG). Twenty-one patients (19 men), 59 ± 7 years old, with limiting angina and multivessel coronary artery disease (CAD), not amenable to complete CABG were enrolled. BMC were obtained prior to surgery, and the lymphomonocytic fraction separated by density gradient centrifugation. During surgery, 5 mL containing 2.1 ± 1.3 × 108 BMC (CD34+ = 0.8 ± 0.3%) were injected in the ischemic non-revascularized myocardium. Myocardial perfusion was assessed by magnetic resonance imaging (MRI) at baseline and 1 month after surgery. The increase in myocardial perfusion was compared between patients with <50% (group A, n = 11) with that of patients with >50% (group B, n = 10) of target vessels (stenosis ≥ 70%) successfully bypassed. Injected myocardial segments included the inferior (n = 12), anterior (n = 7), and lateral (n = 2) walls. The number of treated vessels (2.3 ± 0.8) was significantly smaller than the number of target vessels (4.2 ± 1.0; P < 0.0001). One month after surgery, cardiac MRI showed a similar reduction (%) in the ischemic score of patients in group A (72.5 ± 3.2), compared to patients in group B (78.1 ± 3.2; P = .80). Intramyocardial injection of autologous BMC may help increase myocardial perfusion in patients undergoing incomplete CABG, even in those with fewer target vessels successfully treated. This strategy may be an adjunctive therapy for patients suffering from a more advanced (diffuse) CAD not amenable for complete direct revascularization.

Keywords

Stem cellsCoronary artery diseaseIschemiaCardiac surgeryMagnetic resonance imaging

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Luís Henrique Wolff Gowdak
    • 1
  • Isolmar Tadeu Schettert
    • 1
  • Carlos Eduardo Rochitte
    • 1
  • Luiz Augusto Ferreira Lisboa
    • 1
  • Luís Alberto Oliveira Dallan
    • 1
  • Luiz Antônio Machado César
    • 1
  • Sérgio Almeida de Oliveira
    • 1
  • José Eduardo Krieger
    • 1
  1. 1.Laboratory of Genetics and Molecular CardiologyHeart Institute (InCor), University of São Paulo Medical SchoolSão PauloBrazil