Clinical Research in Cardiology

, Volume 100, Issue 11, pp 983–992

Maladaptive hypertrophy after acute myocardial infarction positive effect of bone marrow-derived stem cell therapy on regional remodeling measured by cardiac MRI

Authors

    • Department of CardiologyKerckhoff-Heart Center
  • Birgit Assmus
    • Department of CardiologyUniversity Hospital
  • Volker Schächinger
    • Department of CardiologyKlinikum Fulda
  • Johannes Rixe
    • Department of CardiologyKerckhoff-Heart Center
  • Susanne Möllmann
    • Department of CardiologyKerckhoff-Heart Center
  • Helge Möllmann
    • Department of CardiologyKerckhoff-Heart Center
  • Stefanie Dimmeler
    • Department of Experimental CardiologyUniversity of Frankfurt
  • Andreas M. Zeiher
    • Department of CardiologyUniversity Hospital
  • Christian W. Hamm
    • Department of CardiologyKerckhoff-Heart Center
  • Thorsten Dill
    • Department of CardiologySana Klinikum Düsseldorf Benrath
Original Paper

DOI: 10.1007/s00392-011-0330-3

Cite this article as:
Rolf, A., Assmus, B., Schächinger, V. et al. Clin Res Cardiol (2011) 100: 983. doi:10.1007/s00392-011-0330-3

Abstract

Objective

In the aftermath of myocardial infarction, increased loading conditions will trigger hypertrophy of viable myocardium. This in turn causes deterioration of regional contractility. Cardiac magnetic resonance imaging (cMRI) allows the exact differentiation of viable and infarcted myocardium and therefore the measurement of regional wall thickness and function. Bone marrow-derived stem cell (BMC) transfer has been shown to improve global function and remodeling. The present study examines the effect of BMC transfer on regional remodeling and function after myocardial infarction by cMRI.

Design

Fifty-four patients of the MR substudy of the REPAIR-AMI trial have been studied at baseline and 12-month follow-up. Enddiastolic wall thickness (EDWT) and wall thickening (WT%) have been measured on SSFP cine sequences.

Results

Enddiastolic wall thickness decreased in both placebo and BMC groups in viable as well as infarcted segments. The effect was largest in the pre-specified subgroup of patients below the median EF of 48.9% (infarcted segments −1.14 mm Placebo vs. −1.91 mm BMC, p for interaction 0.01, remote segments −0.19 mm Placebo vs. −0.94 mm BMC, p for interaction 0.00001). Corrected for baseline values BMC therapy yielded smaller EDWT at 12 months in infarcted and remote segments (infarcted 7.58 mm Placebo vs. 6.13 mm BMC p = 0.0001, remote 8.76 mm Placebo vs. 7.32 mm BMC, p = 0.0001). This was associated with better contractility within the infarcted segments among BMC patients (WT% 24.17% Placebo vs. 49.31% BMC, p = 0.0001). The WT% was inversely correlated with EDWT (r = −0.37, p = 0.0001).

Conclusion

Bone marrow-derived stem cell therapy yields smaller EDWT when compared with placebo patients suggesting a positive effect on maladaptive hypertrophy of viable myocardium. This notion is supported by the enhanced regional contractility within the BMC group which is inversely correlated with EDWT.

Keywords

MRIStem cellsRemodeling

Copyright information

© Springer-Verlag 2011