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Isolation of Human Atrial Myocytes for Simultaneous Measurements of Ca2+ Transients and Membrane Currents
10:53

Isolation of Human Atrial Myocytes for Simultaneous Measurements of Ca2+ Transients and Membrane Currents

Published on: July 3, 2013

Calcium antagonists and the ischemic myocardium

W G Nayler

    International Journal of Cardiology
    |June 1, 1987
    PubMed

    Insights

    Calcium channel blockers show promise in laboratory studies for protecting heart muscle from ischemia and reperfusion injury. However, clinical trials for myocardial infarction management have yielded disappointing results, prompting further investigation into this discrepancy.

    Area of Science:

    • Cardiology
    • Pharmacology

    Background:

    • Calcium antagonists (slow channel blockers) demonstrate cardioprotective effects in experimental models of ischemia and reperfusion.
    • Clinical applications in myocardial infarction have shown limited success, contrasting with laboratory findings.

    Purpose of the Study:

    • To explore the discrepancy between laboratory efficacy and clinical outcomes of calcium antagonists in myocardial infarction.
    • To investigate the reasons behind the disappointing clinical trial results for these cardioprotective agents.

    Main Methods:

    • Review of existing laboratory and clinical trial data.
    • Analysis of pharmacological mechanisms and clinical trial designs.

    Main Results:

    • Laboratory studies consistently show myocardial protection from ischemia-reperfusion injury with calcium antagonists.
    • Clinical trials in patients with myocardial infarction have largely failed to demonstrate significant benefits.

    Conclusions:

    • Further research is needed to reconcile the differences between experimental and clinical findings.
    • Potential factors contributing to the discrepancy may include drug selection, dosage, timing of administration, and patient population characteristics.

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