Aspergillus fumigatus alkaline protease 1 (Alp1/Asp f13) in the airways correlates with asthma severity
نویسندگان
چکیده
منابع مشابه
Prevalence of specific immunoglobulin E and G against Aspergillus fumigatus in patients with asthma
Background and Purpose: Aspergillus fumigatus as a ubiquitous fungus can be found in the respiratory tract of the asthmatic and healthy people. The inhalation of Aspergillus spores leads to an immune response in individuals with asthma and results in the aggravation of the clinical symptoms. The present study aimed to investigate the prevalence of specific immunoglobulin E and G (IgE and IgG) a...
متن کاملEffects of alkaline protease or restrictocin deficient mutants of Aspergillus fumigatus on human polymorphonuclear leukocytes.
Several substances including proteases and restrictocin have been suggested as candidates for virulence determinants in invasive pulmonary aspergillosis. However, the roles of such substances are not well understood. This study compared the in vitro suppressive effects of Aspergillus fumigatus culture filtrates (ACFs), on the functions of human polymorphonuclear leukocytes (PMNLs), the principa...
متن کاملIsolation and characterisation of an extracellular alkaline protease of Aspergillus fumigatus.
Aspergillus fumigatus secreted an inducible alkaline protease (AlPase) when cultivated in the presence of collagen (200 micrograms/ml) as sole nitrogen and carbon source. Proteolytic activity was maximum at pH 9.0 with azocollagen as substrate. The enzyme, which was the major protein found in the supernate of a liquid culture, was purified by ammonium sulphate precipitation and gel filtration. ...
متن کاملThe alkaline protease of Aspergillus fumigatus is not a virulence determinant in two murine models of invasive pulmonary aspergillosis.
Little is known of the pathophysiology of invasive pulmonary aspergillosis (IPA), an opportunistic fungal infection usually caused by Aspergillus fumigatus. It has been suggested that the ability of the fungus to degrade elastin may aid its invasion and growth in lung tissue. We have described previously the construction of a strain of A. fumigatus in which the gene encoding an alkaline proteas...
متن کاملElimination of Aspergillus fumigatus conidia from the airways of mice with allergic airway inflammation
BACKGROUND Aspergillus fumigatus conidia can exacerbate asthma symptoms. Phagocytosis of conidia is a principal component of the host antifungal defense. We investigated whether allergic airway inflammation (AAI) affects the ability of phagocytic cells in the airways to internalize the resting fungal spores. METHODS Using BALB/c mice with experimentally induced AAI, we tested the ability of n...
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ژورنال
عنوان ژورنال: Journal of Allergy and Clinical Immunology
سال: 2018
ISSN: 0091-6749
DOI: 10.1016/j.jaci.2017.07.034