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Related Experiment Videos

A scanning electron microscopic study on hepatic changes induced by mouse hepatitis virus-2.

K Oikawa

    The Tohoku Journal of Experimental Medicine
    |December 1, 1979
    PubMed
    Summary

    Mouse hepatitis virus-2 (MHV-2) causes liver damage in mice, starting with cell swelling and progressing to necrosis. This liver injury is linked to impaired blood flow and direct viral effects on liver cells.

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    Area of Science:

    • Hepatology
    • Virology
    • Pathology

    Background:

    • Mouse hepatitis virus-2 (MHV-2) is a significant pathogen affecting murine models.
    • Understanding the temporal progression of MHV-2 induced liver injury is crucial for developing therapeutic strategies.

    Purpose of the Study:

    • To investigate the structural and cellular changes in the liver following MHV-2 inoculation in mice.
    • To elucidate the mechanisms underlying MHV-2 induced hepatic pathology and necrosis.

    Main Methods:

    • Intraperitoneal inoculation of MHV-2 into mice.
    • Histological examination of liver tissues at various time points post-inoculation (9, 24, 48, and 72 hours).
    • Microscopic observation of hepatocytes, Kupffer cells, sinusoidal lumina, and bile duct structures.

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    Main Results:

    • Early stages (9 hr) showed no significant liver structural changes.
    • At 24 hr, hepatocyte swelling, narrowed sinusoids, and altered Kupffer cells were observed, with virus particles appearing.
    • By 48 hr, necrotic foci emerged, escalating to submassive or massive necrosis by 72 hr, associated with impaired sinusoidal microcirculation.

    Conclusions:

    • MHV-2 infection leads to progressive liver damage, characterized by cellular swelling and subsequent necrosis.
    • Aggravation of sinusoidal microcirculation, due to swollen hepatocytes and Kupffer cells, contributes significantly to hepatic necrosis.
    • Direct viral effects and potential damage to bile duct flagella may also play a role in the observed pathology.