Experimental cryptococcal myocarditis

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Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse
12:24

Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse

Published on: June 20, 2014

T Nagai, C Kawai, N Kumagai

    Japanese Circulation Journal
    |May 1, 1979
    PubMed

    Insights

    Cryptococcus neoformans infection in rabbits and rats caused myocarditis, characterized by myocardial lesions and inflammatory cell infiltration. The study confirmed Cryptococcus neoformans presence in cardiac tissues using immunofluorescence and PAS staining.

    Area of Science:

    • Mycology
    • Cardiology
    • Immunology

    Background:

    • Cryptococcus neoformans is an opportunistic fungal pathogen.
    • Cardiac involvement in fungal infections can lead to severe complications.

    Purpose of the Study:

    • To investigate the cardiac effects of Cryptococcus neoformans infection in animal models.
    • To characterize the pathological changes in the myocardium following infection.

    Main Methods:

    • Intrarenal inoculation of rabbits and rats with Cryptococcus neoformans.
    • Histopathological examination of cardiac tissues.
    • Direct immunofluorescent antibody method for antigen detection.
    • Periodic acid-Schiff (PAS) staining for fungal identification.

    Main Results:

    • Myocarditis developed in rabbits and rats on days 16, 30, and 60 post-inoculation.
    • Cardiac lesions showed focal necrosis and round cell infiltration in the myocardium.
    • Cryptococcal antigens were detected in myocardial lesions using immunofluorescence.
    • Cryptococcus neoformans was identified in damaged myocardial tissues via PAS staining.

    Conclusions:

    • Intrarenal Cryptococcus neoformans inoculation can lead to experimental myocarditis.
    • The myocardium is a site of fungal localization and inflammation.
    • Immunofluorescence and PAS staining are effective methods for diagnosing cryptococcal myocarditis.

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