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Passive Administration of Monoclonal Antibodies Against H. capsulatum and Others Fungal Pathogens
09:57

Passive Administration of Monoclonal Antibodies Against H. capsulatum and Others Fungal Pathogens

Published on: February 14, 2011

Histoplasmosis

Jessica Lin Blache, Kirk Ryan, Kenneth Arceneaux

    Compendium (Yardley, PA)
    |August 27, 2011
    PubMed

    Insights

    Histoplasmosis, a fungal infection caused by Histoplasma capsulatum, is common in dogs and cats. Diagnosis involves identifying the fungus, with itraconazole as the preferred treatment, though prognosis varies with disease severity.

    Area of Science:

    • Veterinary Mycology
    • Infectious Diseases in Animals

    Background:

    • Histoplasmosis is a leading systemic fungal infection in dogs and cats.
    • Histoplasma capsulatum is endemic in many US states and globally.
    • Infection occurs via inhalation or ingestion, spreading through macrophages.

    Purpose of the Study:

    • To summarize the epidemiology, clinical presentation, diagnosis, treatment, and prognosis of histoplasmosis in animals.
    • To highlight the significance of Histoplasma capsulatum as a veterinary pathogen.

    Main Methods:

    • Review of existing literature on canine and feline histoplasmosis.
    • Analysis of diagnostic approaches, including cytology, histopathology, and potential antigen testing.
    • Evaluation of treatment outcomes with itraconazole and prognostic indicators.

    Main Results:

    • Histoplasmosis presents with nonspecific signs like lethargy and weight loss, or localized respiratory/GI signs.
    • Definitive diagnosis relies on identifying H. capsulatum via cytology or histopathology.
    • Itraconazole is the primary treatment; prognosis is fair for pulmonary disease but guarded to poor for GI or disseminated forms.

    Conclusions:

    • Histoplasmosis remains a significant mycosis in companion animals, requiring prompt diagnosis and treatment.
    • Antigen testing may offer future diagnostic improvements.
    • Prognosis is strongly linked to the extent and location of the fungal dissemination.

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