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Generalised protothecosis in a collie dog.

J B Thomas¹, N Preston

¹School of Veterinary Studies, Murdoch University, Western Australia.

Australian Veterinary Journal

|January 1, 1990

Summary

Generalized protothecosis, a rare algal infection, occurred in a Collie dog with severe colitis. This case highlights potential breed susceptibility and the role of immune competence in disseminated disease.

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Area of Science:

Veterinary Pathology
Mycology
Immunology

Background:

Protothecosis is an opportunistic infection caused by Prototheca species, algae-like micro-organisms.
Generalized protothecosis is rare, particularly in immunocompetent animals, and often presents with non-specific clinical signs.

Observation:

A Collie dog presented with a long-standing history of severe colitis, a primary clinical manifestation.
Histological examination confirmed the dissemination of Prototheca organisms to multiple organs.

Findings:

The study discusses the pathogenesis of generalized protothecosis in the Collie.
Evidence suggests a potential breed predisposition in Collie dogs for this condition.
The ubiquitous nature of the organism and disseminated disease point towards potential issues with immune competence.

Implications:

This case underscores the importance of considering protothecosis in dogs with chronic gastrointestinal issues, especially Collies.
Further research into breed-specific immune responses may elucidate the pathogenesis of disseminated protothecosis.
Understanding immune competence is crucial for managing and preventing opportunistic infections like protothecosis.

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