Dust was collected over a period of several weeks in 2007 from HEPA filters in the U.S. Laboratory Module of the International Space Station (ISS). The dust was returned on the Space Shuttle Atlantis, mixed, sieved and the DNA was extracted. Using a DNA-based method called mold-specific quantitative PCR (MSQPCR), 39 molds were measured in the dust. Potential opportunistic pathogens Aspergillus ...

The authors present two case reports of necrotizing pulmonary aspergillosis. This disease is part of a spectrum of clinical conditions caused by the inhalation of Aspergillus spores. The necrotizing pulmonary aspergillosis (NPA) corresponds to an indolent, destructive process of the lung due to invasion by Aspergillus species, usually A. fumigatus. The diagnosis is confirmed by a histological d...

The localization of pyruvate carboxylase (cytosolic or mitochondrial) was studied in nine different Aspergillus species (14 strains). In some species (A. aculeatus, A. flavus, A. foetidus, A. nidulans, A. ochraceus, and A. sojae), the pyruvate carboxylase activity could be detected only in the cytosolic fraction of the cells. Pyruvate carboxylase has been found only in the mitochondrial fractio...

Conidia of Aspergillus fumigatus, Aspergillus flavus, Aspergillus niger, Penicillium brevi-compactum, Penicillium frequentans, Penicillium spinulosum, and Penicillium verrucosum var. cyclopium were subjected to partition at varying pH values in an aqueous two-phase system containing charged polyethylene glycol. In the system, the partition behavior of the conidia of the Penicillium species vari...

To evaluate the potential for mycotoxin production by fungi in dried vine fruits, the mycobiota was determined both before and after surface disinfection. Predominant genera were Aspergillus (50.2%), Eurotium (21.4%) and Penicillium (13.5%). Aspergillus section Nigri ("black aspergilli") were isolated with relatively high frequency. Aspergillus niger was the most common species but only 3 of 29...

This study was conducted to determine the frequency of sensitization to Aspergillus antigens in 27 patients with perennial rhinitis. Immediate cutaneous reactivity was observed in 7 (26%) patients. In 3 of these 7 patients, hypersensitivity was restricted to Aspergillus antigens alone. One patient had an isolated late cutaneous reaction. Hypersensitivity was observed most commonly with A. flavu...

aflatoxins are carcinogenic metabolites produced by several strains of aspergillus flavus group in food and feed. cluster genes in aflatoxin biosynthesis pathway contain structural, regular and unassigned genes , nor-1 , ver-1 , and omt-1 are structural genes that coding for key enzymes and aflr is a regulatory gene that plays a key role in the production of aflatoxin and is affecting on the st...

presentation of an unusual case of cerebral aspergillosis in an immune competent patient who was treated successfully but symptoms and signs of a demyelinating process following initial recovery has been occurred. a 29-year-old male with focal seizure. brain mri revealed small multiple hemispheric and dural lesions. an open biopsy was conducted. histological evaluation revealed hyphe-like struc...

The diagnosis of invasive aspergillosis (IA) based on the detection of Aspergillus galactomannan (GM) is complicated by the presence of cross-reactive GM epitopes in patient specimens. We have developed a novel and specific Aspergillus antigen-capture enzyme-linked immunosorbent assay (ELISA) by the selection of two well-characterized monoclonal antibodies from 17 candidate antibodies. The epit...

BACKGROUND The Dijon University Hospital in Dijon, France is involved in a large construction program with heavy truck traffic and a very dusty environment. This study aimed to assess the impact of outdoor hospital construction work on Aspergillus air contamination in the immediate environment of patients at high risk for aspergillosis in the presence of protective measures. METHODS Prospecti...