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Experimental dermatophilosis.

J Bucek1, L Pospísil, M Moster

  • 1Institute of Pathology, Faculty of Medicine, Masaryk University, Brno, CSFR.

Zentralblatt Fur Veterinarmedizin. Reihe B. Journal of Veterinary Medicine. Series B
|September 1, 1992
PubMed
Summary
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This study details experimental dermatophilosis in rabbit skin, revealing exudative dermatitis with specific histopathologic features. Findings highlight the characteristics of Dermatophilus congolensis infections in animal models.

Area of Science:

  • Veterinary Dermatology
  • Microbiology
  • Pathology

Background:

  • Dermatophilosis is a bacterial skin disease caused by Dermatophilus congolensis.
  • Understanding the histopathologic features of experimental infections is crucial for diagnosis and treatment.

Purpose of the Study:

  • To describe the histopathologic features of experimental dermatophilosis in rabbit skin.
  • To characterize the morphology and staining properties of Dermatophilus congolensis in infected tissues.

Main Methods:

  • Experimental infection of rabbit skin with Dermatophilus congolensis.
  • Histopathologic examination of infected skin tissues.
  • Gram staining and acid-fast staining.
  • Transmission and scanning electron microscopy for fine structure analysis.

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Main Results:

  • Experimental infection resulted in exudative and crustal dermatitis with acanthosis and subcorneal abscesses.
  • Branching hyphae and coccoid bodies of Dermatophilus congolensis were observed, primarily in the parakeratotic layer and abscesses.
  • Hyphae were Gram-positive and acid-fast, while coccoid bodies were Gram-positive and non-acid-fast.
  • Electron microscopy revealed the fine structure of hyphae and flagellated coccoid bodies.

Conclusions:

  • The study provides a detailed histopathologic description of experimental dermatophilosis in rabbits.
  • Dermatophilus congolensis exhibits distinct morphologic and staining characteristics in vivo.
  • Electron microscopy offers insights into the ultrastructure of the bacterium during infection.