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Related Experiment Videos

Electron microscopy of Campylobacter jejuni.

P J Pead

    Journal of Medical Microbiology
    |August 1, 1979
    PubMed
    Summary

    Researchers studied Campylobacter jejuni strains from gastroenteritis patients. Electron microscopy revealed pleomorphic cells resembling V. fetus, with changes noted after prolonged incubation.

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    Area of Science:

    • Microbiology
    • Electron Microscopy
    • Bacterial Morphology

    Background:

    • Gastroenteritis is frequently caused by bacterial pathogens.
    • Campylobacter jejuni is a significant cause of bacterial gastroenteritis worldwide.
    • Understanding the morphology of C. jejuni is crucial for diagnosis and treatment.

    Purpose of the Study:

    • To investigate the ultrastructural morphology of Campylobacter jejuni strains isolated from human gastroenteritis cases.
    • To compare the morphology of C. jejuni with related bacterial species, such as Vibrio fetus.
    • To observe potential morphological alterations in C. jejuni under different culture conditions.

    Main Methods:

    • Isolation and culturing of Campylobacter jejuni from stool samples of 56 gastroenteritis patients.
    • Examination of five isolated C. jejuni strains using transmission electron microscopy.
    • Analysis of bacterial cell morphology, including shape and structural characteristics.

    Main Results:

    • The five C. jejuni strains exhibited pleomorphism, a common characteristic of this bacterium.
    • A significant proportion of the examined C. jejuni cells displayed morphological similarities to Vibrio fetus.
    • Prolonged incubation of cultures led to observable changes in the morphology of C. jejuni cells.

    Conclusions:

    • Campylobacter jejuni exhibits significant morphological variability, which can impact its identification.
    • The observed resemblance to V. fetus highlights potential challenges in differentiating between these bacterial species based solely on morphology.
    • Environmental factors, such as prolonged incubation, can influence the morphology of C. jejuni, necessitating standardized culturing techniques for accurate assessment.

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