Cited 12 times since 2011 (0.9 per year) source: EuropePMC Circulation. Cardiovascular imaging, Volume 4, Issue 2, 5 1 2011, Pages 122-129 Intramyocardial bone marrow-derived mononuclear cell injection for chronic myocardial ischemia: the effect on diastolic function. van Ramshorst J, Antoni ML, Beeres SL, Roes SD, Delgado V, Rodrigo SF, de Roos A, Holman ER, Fibbe WE, Lamb HJ, Zwaginga JJ, Boersma E, van der Wall EE, Schalij MJ, Atsma DE, Bax JJ
Background
The present substudy of a recently published randomized trial aimed to investigate the effect of intramyocardial bone marrow cell injection on diastolic function in patients with chronic myocardial ischemia.
Methods and results
In a total of 50 patients, diastolic function was evaluated before and 3 months after bone marrow cell injection using standard echocardiography and strain analysis. In addition, MRI-derived transmitral flow measurements were obtained in a subset of 36 patients. Left ventricular ejection fraction increased from 50±5% to 54±7% in the bone marrow cell group, which was a significant improvement as compared with the placebo group (52±5% versus 51±7%, P=0.001). Filling pressure estimate E/E' ratio improved from 14±5 at baseline to 12±4 at 3 months in the bone marrow cell group, whereas no improvement was observed in the placebo group (13±4 versus 13±5). The improvement in E/E' ratio was significantly larger in the bone marrow cell group (P=0.008). Furthermore, the E/A peak flow ratio as assessed by MRI showed a significant increase in the bone marrow cell group as compared with the placebo group (+0.16±0.25 versus -0.04±0.21, P=0.01), which was mainly related to an increase in the early (E) peak flow rate in the bone marrow cell group (from 407±96 mL/s to 468±110 mL/s, P=0.009 as compared with the placebo group).
Conclusions
The current study demonstrates that intramyocardial bone marrow cell injection is associated with a beneficial effect on myocardial relaxation and filling pressures in patients with chronic myocardial ischemia.
