Importance of elastase production in development of invasive aspergillosis.
J Mycol Med
; 22(2): 167-72, 2012 Jun.
Article
em En
| MEDLINE
| ID: mdl-23518019
ABSTRACT
OBJECTIVE:
To evaluate the relationship between elastase activity of different Aspergillus fumigatus (A. fumigatus) isolates and their pathogenicity in mice. MATERIAL ANDMETHODS:
The animals were intravenously (IV) infected with 1×10(6) conidia/mouse. The elastase activity in mice sera and survival time were determined. All animals were sacrified at the end of the fourth week, and autopsies were performed for histopathological examination. The tissue sections were stained with Periodic Acid Schiff (PAS) and Verhoeff's techniques.RESULTS:
The highest elastase activity was associated with the sera of infected mice with elastase-producing A. fumigatus AIR78 as standard strain (0.18±0.02mm), followed by infected animals with elastase-producing isolates (0.16±0.02mm) and control mice (0.14±0.02mm). The elastase activity index (EAI) was determined in value of 0.92±0.27. The survival times in mice infected with elastase-producing isolate and in control group were 21.6 and 30 days, respectively. Histopathological studies showed that the heart and kidneys were more infected by Aspergillus hyphae than other tissues.CONCLUSION:
It was concluded that there is a significant relationship between elastase activity and survival time in mice with aspergillosis.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aspergilose
/
Aspergillus fumigatus
/
Elastase Pancreática
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Fungemia
Limite:
Animals
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Humans
/
Male
Idioma:
En
Revista:
J Mycol Med
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Irã