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Gastric spirillosis in beagles.

G A Henry, P H Long, J L Burns

    American Journal of Veterinary Research
    |May 1, 1987
    PubMed
    Summary

    A spiral-shaped microorganism was identified in the stomachs of all healthy Beagles studied. This novel gastric flora likely represents a normal finding in canine gastric mucosa.

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    Area of Science:

    • Veterinary Pathology
    • Canine Microbiology
    • Gastrointestinal Research

    Background:

    • The gastric microbiome of healthy canines is not fully characterized.
    • Previous studies have not extensively documented spiral-shaped microorganisms in canine gastric glands.

    Purpose of the Study:

    • To investigate the presence and morphology of spiral-shaped microorganisms in the gastric mucosa of healthy Beagles.
    • To determine if these microorganisms are associated with any pathological changes.

    Main Methods:

    • Light microscopy, ultrastructural analysis, and microbiologic evaluation of gastric tissues from 30 healthy Beagles.
    • Morphological characterization of observed microorganisms.
    • Attempts to culture the identified organisms.

    Main Results:

    • Spiral-shaped microorganisms were consistently observed in the gastric glands and parietal cell canaliculi of all 30 dogs.
    • Organisms were most prevalent in the cardia and fundic-pyloric junction regions.
    • Associated findings included lymphoreticular hyperplasia and parietal cell canaliculi dilatation; degeneration was rare.
    • Morphology indicated helical organisms with flagella, approximately 0.5 x 7.0 microns, with some showing an axial fibril, suggesting two forms.
    • Culture attempts were unsuccessful.

    Conclusions:

    • A spiral-shaped microorganism, resembling the genus Spirillum, is a common inhabitant of the healthy Beagle gastric mucosa.
    • This organism is likely part of the natural gastric flora in dogs.
    • Further research is needed to classify the organism and understand its role in the canine gastric environment.

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