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G-CSF for Extensive STEMI.

Felice Achilli1, Gianluca Pontone2,3, Beatrice Bassetti4

  • 1From the Departments of Cardiology (F.A., S.R., C.M., F.S.), ASST-Monza, San Gerardo Hospital, Monza, Italy.

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|May 30, 2019
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Summary
This summary is machine-generated.

Early G-CSF administration improved heart function and reduced remodeling in STEMI patients. This treatment reduced infarct size and improved myocardial strain, offering a potential benefit for heart attack recovery.

Keywords:
granulocyte colony-stimulating factorleft ventricular remodelingmyocardial infarctionpercutaneous coronary interventionstandard of care

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Area of Science:

  • Cardiology
  • Regenerative Medicine
  • Biomedical Engineering

Background:

  • Acute myocardial infarction (AMI) can lead to adverse left ventricular (LV) remodeling and dysfunction.
  • Early intervention strategies are crucial to mitigate long-term cardiac damage.
  • Granulocyte colony-stimulating factor (G-CSF) has shown potential in previous studies to improve outcomes post-MI.

Purpose of the Study:

  • To evaluate the effect of early G-CSF administration on LV remodeling and function in ST-segment-elevation myocardial infarction (STEMI) patients.
  • To assess changes in infarct size and myocardial strain using cardiac magnetic resonance (CMR).
  • To determine if G-CSF provides benefits beyond standard of care (SOC).

Main Methods:

  • A Phase III randomized controlled trial (STEM-AMI OUTCOME) involving 161 STEMI patients with LV ejection fraction ≤45%.
  • Patients received either SOC + G-CSF or SOC alone.
  • Cardiac MRI (CMR) was performed at baseline and 6-month follow-up to assess LV volumes, ejection fraction, infarct size (late gadolinium enhancement), and myocardial strain.

Main Results:

  • G-CSF treatment resulted in a significantly greater improvement in LV ejection fraction (+5.1%) and a reduction in indexed LV end-systolic volume (-6.7 mL/m²).
  • Indexed late gadolinium enhancement significantly decreased in the G-CSF group, indicating reduced scar size.
  • Improvements in global longitudinal strain (+2.4%) and global circumferential strain were observed in the G-CSF group.

Conclusions:

  • Early G-CSF administration offers significant benefits for STEMI patients with LV dysfunction.
  • G-CSF improves global systolic function, reduces adverse LV remodeling, and decreases infarct size.
  • The findings support G-CSF as a valuable adjunct to standard care for STEMI patients.