Real-time PCR and quantitative culture for monitoring of experimental Aspergillus fumigatus intracranial infection in neutropenic mice.
J Med Microbiol
; 60(Pt 7): 913-919, 2011 Jul.
Article
en En
| MEDLINE
| ID: mdl-21436369
ABSTRACT
The central nervous system (CNS) is the most common site of dissemination during Aspergillus infection. PCR has the potential to facilitate early diagnosis of CNS aspergillosis, which could assist in reducing disease mortality. In two experiments, neutropenic CD-1 male mice were infected intracranially with 5×106 conidia of Aspergillus fumigatus. At time points up to 120 h after infection, mice were euthanized and samples of blood, brain, spinal cord and cerebrospinal fluid (CSF) were taken. The brain fungal burden was determined by quantitative culture, and fungal DNA was detected by quantitative PCR. Plating for A. fumigatus from the brain confirmed that all mice had burdens of log10>3 from 4 to 120 h after infection. A. fumigatus DNA was detected in blood (88â%), brain (96â%), CSF (52â%) and spinal cord (92â%) samples. The brain and spinal cord contained the highest concentrations of fungal DNA. Adapting the extraction protocol to maximize yield from small sample volumes (10 µl CSF or 200 µl blood) allowed PCR detection of A. fumigatus in infected mice, suggesting the use of CSF and blood as diagnostic clinical samples for CNS aspergillosis.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
6_ODS3_enfermedades_notrasmisibles
Problema de salud:
6_other_blood_disorders
Asunto principal:
Aspergillus fumigatus
/
Encéfalo
/
Reacción en Cadena de la Polimerasa
/
Neuroaspergilosis
/
Neutropenia
Tipo de estudio:
Diagnostic_studies
/
Guideline
/
Screening_studies
Límite:
Animals
Idioma:
En
Revista:
J Med Microbiol
Año:
2011
Tipo del documento:
Article
País de afiliación:
Irlanda