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Related Experiment Videos

Spontaneous dissecting aortic aneurysm in a squirrel monkey (Saimiri sciureus)

G A Boorman, S Silverman, J H Anderson

    Laboratory Animal Science
    |December 1, 1976
    PubMed
    Summary

    Arteriosclerosis and aortic dissection were found in a squirrel monkey, mirroring human conditions. Radiographic findings were similar to those seen in human patients with these arterial diseases.

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    Area of Science:

    • Veterinary Pathology
    • Comparative Cardiovascular Medicine

    Background:

    • Atherosclerosis and aortic aneurysms are significant cardiovascular diseases in humans.
    • Understanding these conditions in non-human primates can offer insights into disease mechanisms and progression.

    Observation:

    • Radiographic and necropsy findings revealed arteriosclerosis and a dissecting aortic aneurysm in an aged female squirrel monkey (Saimiri sciureus).
    • The dissection originated in the aortic arch, progressed along the media, and rejoined the aortic lumen near the renal arteries.

    Findings:

    • Radiographic presentation closely mimicked the analogous syndrome observed in humans.
    • Histopathological examination confirmed medial necrosis and moderate atherosclerosis in addition to the dissecting aneurysm.

    Implications:

    • This case highlights the squirrel monkey as a potential model for studying human arteriosclerosis and aortic dissection.
    • Comparative pathology of cardiovascular diseases can enhance our understanding of disease etiology and inform therapeutic strategies.

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