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Aspergillus
Classic Diagnostic
Dr. Patricio Godoy Martínez
Universidad Austral de Chile
pgodoymartinez@gmail.com
AspergillusAspergillus
Ubiquitous, commonly ocurring in soil, water, and decaying vegatation.
Reservoirs in hospitals; unfiltered air, ventilation system, carpeting, food, water distribution system, etc.
Cause invasive and allergic disease in humans and other animals.
Cause plant and food spoilage and produce mycotoxins.
Classification of Aspergillus. Classification of Aspergillus. ~260 ~260 especies, especies, 38 have caused disease38 have caused disease
Balajee & Marr,2006. Future Microbiology, 1:435-445.
Geiser 2009. Medical Mycology, 47:S21-S26
Sexual stages associated with the Sexual stages associated with the genus genus AspergillusAspergillus
AspergillusAspergillus
Direct Indirect
Mycology
Diagnostics
AspergillusAspergillus
Microscopic examination
Microscopic examination
ColonyColonyDetection of Ag and A.N
Detection of Ag and A.N
Direct MethodsDirect Methods
ColorationHistopathology
ColorationHistopathology
Direct microscopic examinationDirect microscopic examination
hyphaes hyalines septate.hyphaes hyalines septate.
Vitale R
Histopathology: H&EHistopathology: H&E
Vitale R
Histopathology: GrocottHistopathology: Grocott
Vitale R
IdentificationIdentification
Macro-microscopic observation of Macro-microscopic observation of colonies colonies
Morphological characterMorphological character
COLUMNAR
RADIATE
Morphological characterMorphological character
Josep Guarro
Aspergillus fumigatusAspergillus fumigatus
Colonies black blue-green, consisting of a dense felt of conidiophores. www. pgodoy. com
Aspergillus fumigatusAspergillus fumigatus
Conidial heads columnar. Conidiogenous cells uniseriate. Conidiophore stipes smooth-walled often green in the upper part. Conidia verrucose. www.pgodoy.com
www.aspergillus.man.ac.uk
Neosartorya
Anamorphs closely related to A. fumigatus.
Teleomorphs only differentiated by subtle differences in ascospores ornamentation.
Thermophilic.
Neosartorya
N. fischeri
N. pseudofischeri
N. hiratsukae
Neosartorya
Osteomyelitis
Keratitis
Endocarditis
Peritonitis
Cerebral infection
Pulmonary infection
Disseminated infection
Neosartorya pseudofischeri
Neosartorya hiratsukaeNeosartorya hiratsukae
Josep Guarro
N. pseudofischeriN. pseudofischeri
N. hiratsukaeN. hiratsukae
Josep Guarro
Josep Guarro
Neosartorya
Underdiagnosed (regarded as contaminants in the lab)
Difficult to identify at species level.
Antifungal susceptibility similar to A. fumigatus ?
Little experience in the treatment. Amphotericin B and itraconazole
Josep Guarro
Aspergillus nigerAspergillus niger
Colonies black, consisting of a dense felt of conidiophores. www. pgodoy. com
Aspergillus nigerAspergillus niger
Conidial heads radiate. Vesicles subspherical, conidiogenous cells biseriate. Conidia brown, ornamented. www.aspergillus.man.ac.uk
Aspergillus flavusAspergillus flavus
Colonies yellowish-green, consisting of a dense felt of conidiophores.
www.aspergillus.man.ac.uk
www.pgodoy.com
Aspergillus flavusAspergillus flavus
Conidial heads radiate. Conidiogenous cells uni and biseriate. Conidiophore stipes rough-walled hyaline. Conidia echinulate. Sclerotia may be present.
www.aspergillus.man.ac.uk
Aspergillus parasiticusAspergillus parasiticus
R. Salim & R. Runco
Colonies yellowish-brown, consisting of a dense felt of conidiophores.
conidiophores of varying lengths, wall hyaline, thick, with ornamentation equinulada, spherical vesicles, uni or biseriate (24-25 m), completely covering the fiálides gallbladder. Conidia globose or subglobosos warted (2.5-3 m) with thin walls (20, 21).
Aspergillus tamariiAspergillus tamarii
Conidial heads compact and spherical or loosely radiate. Conidiogenous cells uni and biseriate. Conidiophore stipes rough-walled hyaline. Conidia echinulate.
www.aspergillus.man.ac.uk
Aspergillus orizaeAspergillus orizae
Conidial heads radiate to loosely columnar. Conidiogenous cells uni and biseriate. Conidiophore stipes rough-walled hyaline. Conidia smooth-walled to roughened.
www.aspergillus.man.ac.uk
Aspergillus terreusAspergillus terreus
Colonies yellowish-brown to cinnamon-brown, consisting of a dense felt of conidiophores.
www.aspergillus.man.ac.uk
Aspergillus terreusAspergillus terreus
Conidial heads densely columnar. Conidiogenous cells biseriate. Conidiophore stipes smooth-walled hyaline. Conidia smooth walled, striate hyaline.
www.aspergillus.man.ac.uk
Aspergillus nidulansAspergillus nidulans
Colonies growing rapidly, green, cream-buff or honey-yellow, reverse dark purple.
Vitale R
Aspergillus nidulansAspergillus nidulans
Conidial heads short, columnar. Conidiogenous cells biseriate. Conidiophore stipes brownish. Conidia spherical, rugulose, subhyaline, green.
Vitale R
Aspergillus clavatusAspergillus clavatus
Colonies growing rapidly, bluish-green, consisting of a dense felt of conidiophores.
Conidial heads radiate, later splitting into several columns. Conidiogenous cells uniseriate. Conidiophore stipes smooth. Vesicle clavate. Conidia smooth-walled hyaline.
Aspergillus clavatusAspergillus clavatus
www.pgodoy.com
INFOCUS 2010 - CHILEINFOCUS 2010 - CHILE
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