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Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
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Blastomycosis.

Caroline G Castillo1, Carol A Kauffman2, Marisa H Miceli1

  • 1Division of Infectious Diseases, University of Michigan Health System, 3119 Taubman Center, Ann Arbor, MI 48109, USA.

Infectious Disease Clinics of North America
|January 8, 2016
PubMed
Summary
This summary is machine-generated.

Blastomycosis, a fungal infection from Blastomyces dermatitidis, often causes pneumonia but can spread to other organs. Treatment varies from itraconazole for mild cases to amphotericin B for severe infections.

Keywords:
Amphotericin BB dermatitidisBlastomycosisEndemic mycosesFungal pneumoniaItraconazole

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Area of Science:

  • Mycology
  • Infectious Diseases
  • Pulmonology

Background:

  • Blastomycosis is an endemic fungal infection caused by Blastomyces dermatitidis.
  • It primarily affects the lungs, causing pneumonia, but can disseminate to skin, bones, joints, and the genitourinary tract.
  • Both immunocompetent and immunocompromised individuals are susceptible, with more severe outcomes in the latter group.

Purpose of the Study:

  • To provide a comprehensive overview of Blastomycosis.
  • To discuss diagnostic methods and treatment strategies.
  • To highlight the varied clinical presentations and severity.

Main Methods:

  • Diagnosis relies on fungal culture, direct microscopic visualization of yeast in tissues, and antigen testing.
  • Treatment decisions are guided by disease severity.
  • Mild to moderate pulmonary cases are treated with itraconazole.

Main Results:

  • Blastomycosis commonly presents as pneumonia but can disseminate widely.
  • Severe cases necessitate initial treatment with lipid formulation amphotericin B.
  • Step-down therapy with itraconazole is used after initial treatment for severe disease.

Conclusions:

  • Blastomycosis requires prompt diagnosis and tailored treatment based on severity.
  • Effective management involves antifungal agents like itraconazole and amphotericin B.
  • Understanding dissemination patterns is crucial for comprehensive patient care.