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Clinical Trial, Phase I
Journal Article
Treatment with granulocyte colony-stimulating factor for mobilization of bone marrow cells in patients with acute myocardial infarction.
American Heart Journal 2005 July
BACKGROUND: This study was undertaken to evaluate the hypothesis that treatment with granulocyte colony-stimulating factor (G-CSF) to mobilize bone marrow cells (BMCs) is feasible and safe and promotes neovascularization and myocardial function in patients with acute myocardial infarction.
METHODS: Fourteen patients in the treatment group and 9 patients in the control group were enrolled in this prospective, nonrandomized, open-label study. Forty-eight hours after successful recanalization and stent implantation, the patients of the treatment group received 10 microg/kg body weight per day G-CSF subcutaneously for mean treatment duration of 7.0 +/- 1.0 days. Nine patients fulfilled the entry criteria but refused participation and served therefore as control group. In both groups, regional wall motion and perfusion was evaluated with electrocardiogram-gated sestamibi single-photon emission computed tomography imaging and ejection fraction with radionuclidventriculography before discharge and after 3 months.
RESULTS: No severe side effects of G-CSF treatment were observed. There was a significant improvement of the regional wall motion and perfusion within the treatment group (P < .0001) and between the treatment and control group (P < .05 and P < .01, respectively). Ejection fraction in the treatment group increased from 0.40 +/- 0.11 to 0.48 +/- 0.13 (P < .01), whereas in the control group, ejection fraction increased from 0.40 +/- 0.13 to 0.43 +/- 0.13 (P = .049). A control angiography of the treatment group after 12.4 +/- 6.6 months showed an in-stent restenosis in 1 patient.
CONCLUSION: In patients with acute myocardial infarction, treatment with G-CSF to mobilize BMCs is feasible and safe and seems to be effective under clinical conditions. The therapeutic effect might be attributed to BMC-associated promotion of myocardial regeneration and neovascularization.
METHODS: Fourteen patients in the treatment group and 9 patients in the control group were enrolled in this prospective, nonrandomized, open-label study. Forty-eight hours after successful recanalization and stent implantation, the patients of the treatment group received 10 microg/kg body weight per day G-CSF subcutaneously for mean treatment duration of 7.0 +/- 1.0 days. Nine patients fulfilled the entry criteria but refused participation and served therefore as control group. In both groups, regional wall motion and perfusion was evaluated with electrocardiogram-gated sestamibi single-photon emission computed tomography imaging and ejection fraction with radionuclidventriculography before discharge and after 3 months.
RESULTS: No severe side effects of G-CSF treatment were observed. There was a significant improvement of the regional wall motion and perfusion within the treatment group (P < .0001) and between the treatment and control group (P < .05 and P < .01, respectively). Ejection fraction in the treatment group increased from 0.40 +/- 0.11 to 0.48 +/- 0.13 (P < .01), whereas in the control group, ejection fraction increased from 0.40 +/- 0.13 to 0.43 +/- 0.13 (P = .049). A control angiography of the treatment group after 12.4 +/- 6.6 months showed an in-stent restenosis in 1 patient.
CONCLUSION: In patients with acute myocardial infarction, treatment with G-CSF to mobilize BMCs is feasible and safe and seems to be effective under clinical conditions. The therapeutic effect might be attributed to BMC-associated promotion of myocardial regeneration and neovascularization.
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