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Related Experiment Videos

Infarct distribution in subhuman primates after acute coronary occlusion

B Barker, M D Rosario, V Grant

    Cardiovascular Research
    |December 1, 1980
    PubMed
    Summary

    This study quantified myocardial infarct size in non-human primates after coronary artery ligation. Epicardial infarct extent was slightly larger than endocardial infarct, but both were transmural.

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    Area of Science:

    • Cardiovascular Pathology
    • Primate Models
    • Myocardial Infarction Research

    Background:

    • Assessing infarct size is crucial for understanding myocardial damage.
    • Previous studies have explored infarct characteristics in various models.
    • Non-human primates offer a relevant model for cardiovascular research.

    Purpose of the Study:

    • To quantify the extent of epicardial, endocardial, and septal infarcts in non-human primates.
    • To compare infarct size across different coronary artery ligation durations and locations.
    • To characterize the transmural nature and configuration of myocardial infarcts.

    Main Methods:

    • Acute and chronic coronary artery ligation in 24 monkeys (Macaca cynmologous) and 5 baboons.
    • Histological mapping and planimetry of serial cross-sections to determine infarct extent.

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  • Analysis of infarct size relative to left ventricle and total ventricle mass.

    • Main Results:

    • All induced infarcts were transmural.
    • Epicardial infarct extent was significantly greater than endocardial infarct for 2-hour ligations and chronic ligations of both LAD and diagonal branches.
    • The difference in infarct size between epicardial and endocardial layers was generally small.

    Conclusions:

    • Myocardial infarcts in this primate model are predominantly transmural.
    • A slight epicardial preponderance in infarct size was observed but was not substantial.
    • The infarcts typically exhibited a rectangular configuration.