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Related Experiment Videos

Postbacterial sepsis and disseminated candidiasis.

C K Chan, E Balish

    Canadian Journal of Microbiology
    |August 1, 1978
    PubMed
    Summary

    Gram-negative sepsis impairs polymorphonuclear leucocytes (PMN) function. Septic PMN showed increased spontaneous lysis after phagocytizing Candida albicans, indicating a functional deficit in immune cells during sepsis.

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    Area of Science:

    • Immunology
    • Microbiology
    • Veterinary Medicine

    Background:

    • Sepsis is a life-threatening condition caused by the body's response to infection.
    • Gram-negative bacterial infections, like E. coli sepsis, are common and can lead to severe immune dysregulation.
    • Polymorphonuclear leucocytes (PMN) are critical immune cells involved in combating fungal infections, such as Candida albicans.

    Purpose of the Study:

    • To investigate the functional capacity of PMN in dogs with gram-negative sepsis.
    • To assess the impact of sepsis on PMN's ability to phagocytize and kill Candida albicans.
    • To determine if sepsis alters PMN behavior and function.

    Main Methods:

    • Collected PMN from septic and non-septic dogs.
    • Exposed PMN to Candida albicans in vitro.
    • Assessed phagocytosis rates of C. albicans by PMN.
    • Measured spontaneous lysis of PMN after phagocytosis.

    Main Results:

    • PMN from septic dogs exhibited comparable phagocytosis of C. albicans to PMN from non-septic dogs.
    • PMN from septic dogs demonstrated a significantly higher rate of spontaneous lysis post-phagocytosis.
    • This suggests an impaired functional response in PMN during sepsis.

    Conclusions:

    • Gram-negative sepsis affects PMN function, specifically increasing their susceptibility to lysis after interacting with Candida albicans.
    • A functional difference exists in PMN derived from septic versus normal dogs.
    • These findings highlight a potential mechanism of immune compromise during sepsis.

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