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Related Experiment Videos

Enteric adenoviruses: detection, replication, and significance.

M Retter, P J Middleton, J S Tam

    Journal of Clinical Microbiology
    |October 1, 1979
    PubMed
    Summary

    Detecting non-cultivatable adenoviruses in children with gastroenteritis is possible using indirect immunofluorescence microscopy. This method offers a reliable alternative to electron microscopy for identifying these difficult-to-grow viral strains.

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    Area of Science:

    • Virology
    • Microscopy
    • Pediatric Gastroenterology

    Background:

    • Adenoviruses are a common cause of pediatric gastroenteritis.
    • Standard cell culture methods fail to detect approximately 45% of adenovirus strains in patient stool samples.
    • Electron microscopy and counterimmunoelectrophoresis can detect adenoviruses but have limitations.

    Purpose of the Study:

    • To evaluate indirect immunofluorescence microscopy (IIFM) for detecting non-cultivatable adenovirus strains in pediatric gastroenteritis.
    • To compare the efficacy of IIFM with traditional methods like electron microscopy.

    Main Methods:

    • Indirect immunofluorescence microscopy was used to detect adenovirus in stool samples.
    • Hematoxylin and eosin staining was employed to visualize inclusion bodies.

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  • Neutralization assays with convalescent-phase patient serum were performed on non-growing strains.

    • Main Results:

    • Non-cultivatable adenoviruses exhibited a unique single-cell fluorescence pattern with IIFM.
    • Hematoxylin and eosin staining showed inclusion bodies colocalizing with fluorescent cells.
    • Convalescent-phase serum neutralized the infectivity of non-growing adenovirus strains.
    • IIFM demonstrated comparable performance to electron microscopy in detecting adenovirus in stool.

    Conclusions:

    • Indirect immunofluorescence microscopy is an effective method for identifying non-cultivatable adenoviruses in pediatric gastroenteritis.
    • IIFM provides a valuable diagnostic tool when viral culture is unsuccessful.
    • This technique aids in the comprehensive diagnosis of viral gastroenteritis in children.