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Published on: September 13, 2018
[Aspergillosis: Mechanisms of pathogenicity implicated and approach to laboratory diagnosis.]
J L Blanco1, J Guedeja-Marrón, J Caballero
1Departamento Patología Animal I, Facultad de Veterinaria, Universidad Complutense de Madrid, España. jlblanco@eucmax.sim.ucm.es.
Abstract:
Aspergillosis comprises a wide range of clinical conditions, of which the most serious is invasive aspergillosis, which particularly affects immunodeficient individuals. In the present work we present a review centred on three main aspects of this disease: 1) Possibility of differentiation of strains of Aspergillus fumigatus by phenotyphic and genotypic methods, 2) Mechanisms of pathogenicity of this species and especially the relationships of elastase activity, and 3) Laboratory diagnosis of aspergillosis, principaly in terms of determination of circulating antigens and DNA sequences in the blood and urine of patients.
Insights
This review covers differentiating Aspergillus fumigatus strains, understanding its pathogenicity mechanisms like elastase, and improving laboratory diagnosis of aspergillosis through antigen and DNA detection.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Immunology
Context:
- Aspergillosis presents diverse clinical manifestations, with invasive aspergillosis posing a severe threat, especially to immunocompromised patients.
- Accurate identification and diagnosis are crucial for effective management of invasive fungal infections.
Purpose:
- To review key aspects of aspergillosis, focusing on Aspergillus fumigatus.
- To explore methods for differentiating Aspergillus fumigatus strains.
- To elucidate pathogenicity mechanisms, including elastase activity.
- To discuss advancements in laboratory diagnosis, particularly antigen and DNA detection.
Summary:
- Phenotypic and genotypic methods for differentiating Aspergillus fumigatus strains are examined.
- Pathogenicity mechanisms of Aspergillus fumigatus are discussed, with emphasis on the role of elastase.
- Current laboratory diagnostic approaches for aspergillosis, including the detection of circulating antigens and DNA in patient samples, are reviewed.
Impact:
- This review provides a comprehensive overview of aspergillosis, aiding clinicians and researchers in understanding and diagnosing this opportunistic infection.
- Improved diagnostic strategies discussed may lead to earlier detection and better patient outcomes for invasive aspergillosis.
- Understanding pathogenicity factors can inform the development of novel therapeutic interventions.
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