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Updated: May 27, 2026

Cell-based Therapy for Heart Failure in Rat: Double Thoracotomy for Myocardial Infarction and Epicardial Implantation of Cells and Biomatrix
09:11

Cell-based Therapy for Heart Failure in Rat: Double Thoracotomy for Myocardial Infarction and Epicardial Implantation of Cells and Biomatrix

Published on: September 22, 2014

Cell therapy for refractory angina: time for more ACTion

Peter J Psaltis, Robert D Simari

    Stem Cell Research & Therapy
    |November 11, 2011
    PubMed

    Insights

    Autologous CD34+ progenitor cell therapy significantly improved exercise tolerance and reduced angina symptoms in patients with chronic ischemic heart disease. This cell therapy offers a promising new avenue for refractory angina patients.

    Area of Science:

    • Cardiovascular Medicine
    • Regenerative Medicine
    • Cell Therapy

    Background:

    • Chronic ischemic heart disease presents a significant burden, necessitating advanced therapies for patients with refractory symptoms.
    • Existing research has primarily focused on cell therapy for myocardial infarction, with limited exploration for chronic angina.
    • Coronary revascularization and optimized medical therapy are often insufficient for severe, chronic ischemic conditions.

    Discussion:

    • The ACT34-CMI trial investigated autologous peripheral blood-derived CD34+ progenitor cells for chronic ischemic heart disease.
    • This phase II study demonstrated significant benefits in symptom frequency and exercise capacity in patients with refractory angina.
    • The trial highlights the potential of cell-based approaches for treating debilitating chronic ischemic conditions.

    Key Insights:

    • Myocardial injection of CD34+ progenitor cells improved perfusion and vascularity in preclinical models.
    • Clinical application in the ACT34-CMI trial showed tangible improvements for patients with Class III and IV angina.
    • The study provides crucial data supporting cell therapy as a viable treatment for chronic ischemic heart disease.

    Outlook:

    • Further research and larger trials are warranted to solidify the role of CD34+ cell therapy in cardiovascular medicine.
    • This approach could offer a new therapeutic strategy for patients ineligible for traditional revascularization.
    • Advancements in cell-based therapies hold promise for enhancing myocardial function and patient quality of life.

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