Granulomatous lesions in the lung induced by inhalation of mold spores

Sumi, Y.; Takeuchi, Manabu; Miyakawa, Masami; Nishimura, Hiroshi

doi:10.1007/bf01069748

Cited by 7 publications

(1 citation statement)

References 27 publications

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“…The etiology of toxic pneumonitis is unknown but it has also been speculated that one causative factor could be the inhalation of fungi, bacteria, actinomycetes and endotoxins that are present in flour and saw mills (Chan-Yeung, Enarson, & Kennedy, 1992;Malmberg, Rask-Andersen, Lundholm, & Palmgren, 1990). Allergenic and toxic effects may be the health hazardous associated with exposure to Gram-negative bacteria (Olenchock, 1990), actinomycetes and fungi (Sumi, Takeuchi, Miyakawa, & Nagura, 1994). Many of the microorganisms found in grain dust are well-known respiratory sensitizers, e.g., Cladosporium, Alternaria, Aspergillus, Penicillium (Dutkiewicz, Kus, Dutkiewicz, & Warren, 1985;Dutkiewicz et al, 1989) while Enterobacter agglomerans may be a source of endotoxins (Dutkiewicz, 1978).…”

Section: Introductionmentioning

confidence: 98%

Airborne dust, bacteria, actinomycetes and fungi at a flourmill

Awad¹

2007

Aerobiologia

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A study was carried out on suspended dust, bacterial and fungal aerosols in a four-storey flourmill building located in Giza, Egypt. Airborne microorganisms were quantitatively isolated using liquid impinger and gravimetric samplers during the period from March 2004 to February 2005. Suspended dust varied from 1.96 to 16.3 mg m -3 and 0.69 to 1.8 mg m -3 in the indoor and outdoor environments, respectively. Suspended dust was significantly greater (P < 0.05) at bran package, double roller, purifiers and flour storage units in comparison to the outdoor reference site. The dust levels exceed the occupational exposure limit (OEL) of 0.5 mg m -3 for flour dust. Airborne microbial counts were found at median values, between sampling locations, ranged from 0 to >10 4 CFU m -3 . Gram-negative bacteria were found in small numbers (0-10 2 CFU m -3 ). The highest concentration of actinomycetes (>10 3 CFU m -3 ) was detected in the storage unit. Airborne fungal counts were found at the median values, between sampling locations, varied from 10 3 to 10 4 CFU m -3 . The counts of airborne bacteria and fungi were significantly greater (P < 0.05) at the purifiers and double roller mill units in comparison to the outdoor reference site using the liquid impinger sampler. Microbial levels associated with bulk deposited dust averaged between 10 5 and 10 6 CFU g -1 . Alcaligenes (5.4%) Pseudomonas (3.87%) and Enterobacter (3.1%) were the predominant Gram-negative species while Bacillus (29.4%) and Micrococci (13.9%) were the major components of Gram-positive bacteria. Aspergillus and Penicillium were the predominant fungal types indoor whereas Cladosporium (35.2%) and Aspergillus species (22.2%) were the predominant fungal types outdoor. A number of allergenic and toxigenic bioaerosols were found in the flourmill workplace.

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Section: Introductionmentioning

confidence: 98%

Airborne dust, bacteria, actinomycetes and fungi at a flourmill

Awad¹

2007

Aerobiologia

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Miscellaneous Pulmonary Disease

2005

Lung Pathology

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Sterigmatocystin production by nine newly described Aspergillus species in section Versicolores grown on two different media

Jurjević¹,

Peterson

Solfrizzo

et al. 2013

Mycotoxin Res

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Nine recently described Aspergillus species and four known species in section Versicolores were tested for their ability to produce sterigmatocystin on two liquid media, Czapek w/20% Sucrose Broth and Yeast Extract Broth grown in the dark for 1 week at 25 °C. Detection and quantification of ST were performed by reversed-phase liquid chromatography coupled with electrospray ionization ion trap mass spectrometry. Limit of detection was 3 ng/mL and limit of quantification was 10 ng/mL. Nine newly described Aspergillus species from various substrates, A. amoenus, A. creber, A. cvjetkovicii, A. fructus, A. jensenii, A. puulaauensis, A. subversicolor, A. tennesseensis and A. venenatus in section Versicolores were found to produce sterigmatocystin. Production was confirmed in recently collected isolates of A. protuberus and A. versicolor. A. austroafricanus and A. tabacinus did not produce sterigmatocystin.

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Granulomatous lesions in the lung induced by inhalation of mold spores

Cited by 7 publications

References 27 publications

Airborne dust, bacteria, actinomycetes and fungi at a flourmill

Airborne dust, bacteria, actinomycetes and fungi at a flourmill

Miscellaneous Pulmonary Disease

Sterigmatocystin production by nine newly described Aspergillus species in section Versicolores grown on two different media

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