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Myeloid Cell Isolation from Mouse Skin and Draining Lymph Node Following Intradermal Immunization with Live Attenuated Plasmodium Sporozoites

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Sporotrichosis: Part I.

Regina Casz Schechtman¹

¹Instituto de Dermatologia Prof Rubem David Azulay (IDPRDA), Santa Casa da Misericórdia do Rio de Janeiro, Rio de Janeiro, Brazil. regina.schechtman@gmail.com

|December 9, 2010

Summary

Sporotrichosis, a common South American fungal infection, is diagnosed solely through culturing Sporothrix schenckii. Feline transmission has been linked to a significant outbreak in Rio de Janeiro.

Area of Science:

Mycology
Infectious Diseases
Dermatology

Background:

Sporotrichosis is the most prevalent subcutaneous mycosis in South America.
It results from traumatic inoculation of Sporothrix schenckii from contaminated environmental sources.
The lymphocutaneous form is most common, but fixed cutaneous and disseminated forms also occur, particularly in immunocompromised individuals.

Purpose of the Study:

To review the epidemiology and diagnosis of sporotrichosis.
To highlight the diagnostic challenges and the importance of fungal culture.
To discuss the role of feline transmission in disease outbreaks.

Main Methods:

Review of clinical presentations and diagnostic methods for sporotrichosis.
Emphasis on the diagnostic limitations of direct examination and histology.

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Focus on the gold standard diagnostic technique: isolation of S. schenckii in culture.

Main Results:

Sporothrix schenckii culture is the definitive diagnostic method.
Direct examination and histology are of limited diagnostic value.
Feline transmission has been implicated in major sporotrichosis outbreaks since 1998.

Conclusions:

Accurate diagnosis of sporotrichosis relies exclusively on laboratory culture.
Understanding transmission routes, including potential animal reservoirs like cats, is crucial for outbreak control.
Further research into feline-associated sporotrichosis is warranted.