Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Candida  (25)
  • Aspergillus fumigatus  (20)
  • 1
    ISSN: 1573-0832
    Keywords: Aspergillus fumigatus ; A. umbrosus ; electron microscopy ; ultrastructure ; farmer's lung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The fine structure of Aspergillus fumigatus and Aspergillus umbrosus by transmission electron microscopy (TEM) is described. The fine structure of the ascosporic and asexual stages of A. umbrosus is described for the first time. Dense, homogenous material and fibers were detected on the outer hyphal cell wall of the Aspergilli. Septal pores were found in the hypha of A. umbrosus. Two wall layers were detected in the cell wall of the conidia of the both Aspergilli. The ascospores of A. umbrosus contained thick cell wall and the surface of which was smoother than that of the conidia.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1573-0832
    Keywords: Adherence ; Candida ; immobilized protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The adherence of Candida albicans and C. tropicalis to protein-adsorbed surfaces was investigated with surface-modified glass slides to which serum or salivary proteins were covalently bound. A specific adherence like a ligand-receptor interaction was observed between C. albicans and mucin- or salivary protein-immobilized glass slides. This interaction was eliminated by deglycosylation of the slides, suggesting that the receptor may be an oligosaccharide(s) contained mucin or saliva. A similar specific interaction was also observed between C. tropicalis and fibrinogen-immobilized glass surfaces. When the numbers of adherent cells to deglycosylated protein-immobilized glass glides were plotted against zeta potentials and contact angles of these protein-immobilized glass slides, a significant correaltion was observed between the numbers of adherent cells and zeta potentials in the case of C. albicans (r = −0.87), whereas a significant correlation was observed between cell numbers and contact angles (r = 0.82) in the case of C. tropicalis. These results suggest that the forces governing the adherence of fungi to pellicle in dentures may vary depending upon the surface properties of fungi and substrate.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1573-0832
    Keywords: Candida ; Cryptococcus ; Geotrichum ; Rhodoturula ; Saccharomyces ; Torulopsis spp. ; Pro-Lab ID ring system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract We evaluated 151 coded isolates of medically important yeast species belonging to the genera Candida, Cryptococcus, Geotrichum, Rhodoturula, Saccharomyces and Torulopsis using the newly developed rapid Pro-Lab Identification Ring, PL 960 system (PLID-Ring). All isolates were concurrently identified by the API 20C and conventional procedures comprising macro- and micromorphology, assimilation and fermentation of various carbon and nitrogen compounds. The PLID-Ring system identified isolates of Candida albicans, C. kefyr, C. krusei, C. lusitaniae, C. parapsilosis, Rhodotorula rubra, and Torulopsis glabrata with 100% accuracy in 24 h. This system identified C guilliermondii and S. cerevisiae isolates with an accuracy of 90% and 86%, respectively, while those belonging to Cr. neoformans, T. candida (= C. famata), C. rugosa and C. tropicalis were identified with 38.4%, 50%, 12.5% and 50% accuracy, respectively. Three isolates of Cr. laurentii were not identified by the PLID-Ring system. The overall accuracy of the PLID-Ring system was 81.45% (123 of 151 isolates). However, the system does not include species such as Cr. laurentii in its data base. When these three Cr. laurentii isolates were excluded from the evaluation, the accuracy of the PLID-Ring system increased from 81.45% to 83.1%.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1573-0832
    Keywords: Aspergillus fumigatus ; Conidia ; Mycotoxins ; Sawmill ; Tremorgens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract One hundred and six strains ofA. fumigatus were isolated from 21 sawmills in Sweden, and 73 of these strains were examined for production of fumitremorgen B and verruculogen (tremorgenic mycotoxins) on YES-medium using thin layer chromatography (TLC). Twenty-three strains (32%) were tremorgen producers and 50 strains (68%) were non-producers. Tremorgenic mycotoxins were detected in conidia of sevenA. fumigatus strains. The amount of toxin varied between 0.6–8.0 µg/108 conidia (mean value 2.3 µg/108 conidia, equivalent with 0.18%). No production of the mycotoxin gliotoxin was detected in 6 strains ofA. fumigatus. No tremorgens were detected during mould growth on wood substrates, in spite of the use of different wood species (Scots pine,Pinus sylvestris; Norway spruce,Picea abies and birch,Betula spp.), dried versus non-dried wood, bark (pine), leached wood, and wood after various sterilization methods.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1573-0832
    Keywords: Aspergillus fumigatus ; Columba livia ; Humoral immunoresponse ; Pigeon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The aim of this study was to develop an immunological model of avian Aspergillosis by studying the humoral response of pigeons toAspergillus fumigatus antigens. Immunization was performed by administering weekly injections ofA. fumigatus extracts for 70 days (10 weeks). A new booster injection was given 270 days (9 months) following the last immunization. Results showed an earlyAspergillus-specific humoral immunoresponse which reached a maximum level at 42–63 days (6–9 weeks) post-immunization. Using the ELISA method, it could be observed thatA. fumigatus-specific IgG became elevated in the 2nd week and reached a maximum titre at 63rd day (9th week). In contrast,A. fumigatus-specific IgM levels appeared early showing maximum levels at the 2nd week, after which they declined despite the maintenance of antigenic stimulation. Termination of immunization resulted in the decrease of specific humoral immunoresponse with minimal levels of specific antibodies detectable 210 days (7 months) later. A booster injection given at 270 days (9 months) induced a very fastAspergillus-specific IgM and IgG immunoresponse, reaching levels of antibodies similar to those observed during the immunization period.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1573-0832
    Keywords: Analytical methods ; Aspergillus fumigatus ; Avian aspergillosis ; Gliotoxin ; Turkeys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Turkey poults were given either of two different dosages of two different gliotoxin-producing strains ofAspergillus fumigatus. Infected lung tissue was examined postmortem for the presence of gliotoxin. Gliotoxin was found in lung tissue of ten poults infected with one strain and in seven of ten poults infected with the other strain. Concentrations of gliotoxin in the tissue exceeded 6 ppm in some of the infected tissues. The concentration of gliotoxin found in infected tissue did not appear to be correlated with the dosage of organism given. Considering the pathologic changes observed in turkey poults with aspergillosis and the production of gliotoxin during the pathogenic state in turkey poults, gliotoxin is considered likely to be involved in avian aspergillosis.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1573-0832
    Keywords: Candida ; Glutathione ; Dimorphism ; Glutathione reductase ; GlutathioneS-transferase ; Glutathione peroxidase ; γ-Glutamyl transpeptidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The effect of carbon sources, glucose and sucrose, and nitrogen sources such as ammonia, glutamate andl-citrulline on the activities of glutathione metabolic enzymes has been studied. Yeast and mycelial cells were used to identify changes in activity levels of glutathione reductase (GSSGR), glutathione transferase (GST), glutathione peroxidase (GPX) and γ-glutamyl transpeptidase (GGT). Enzyme activities from cells grown in sucrose media were lower than in glucose media regardless of the enzyme tested, morphological form, or the growth interval. In all enzymes except GST, activity was higher in yeast form than in mycelia, regardless of nitrogen source, with lower activity from 24 to 72 h than at 96 h. In citrulline media, yeast form showed the maximum GST, GGT, and GPX activity. In ammonia-amended media, mycelia showed maximum activity in GGT, whereas in glutamate media, mycelia showed the maximum activity in GST. Also, the type of nitrogen source had no effect on GPX activity in the mycelial form. Finally, changing the nitrogen source showed no significant effect on GSSGR activity, either in the yeast or mycelial form.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1573-0832
    Keywords: β-lactamases ; Candida ; diarrhoea ; infants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract One hundred and thirty seven isolates ofCandida species were isolated from antiobiotic associated diarrhoea cases and were examined to study the role ofCandida in the pathogenesis of diarrhoea in infants. The quantitative estimation of yeast population by simple gram stain smear revealed more than 70% of the cases had 3+ score. The isolates further screened for detection ofβ-lactamases. Among the isolatedCandida sp,β-lactamases was secreted byC. albicans, C. tropicalis, C. krusei andC. parapsilosis. Further, 46% of theCandida isolates were found to be produced 741–1110 mU/ml ofβ-lactamases, suggesting that these enzyme would inactivate penicillin group of drugs and cause failure in the therapy directed against other diarrhoegenic bacteria.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Mycopathologia 102 (1988), S. 135-138 
    ISSN: 1573-0832
    Keywords: Candida ; adherence ; fibrin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The adherence of six Candida species to fibrin clots was studied using a simple, in vitro technique. Yeast suspensions were incubated with fibrin clots and the number of adherent organisms quantified as follows: after washing, the clots were subjected to vortex mixing and the number of CPU's which subsequently grew on Sabourauds medium were counted. Adhesion was directly proportional to the concentration of Candida species in the suspension (r=0.99 p〈0.001). C. albicans and C. tropicalis exhibited marked adherence whereas C. krusei, C. gulliermondi and C. glabrata adhered less readily. C. parapsilosis was intermediate in its ability to adhere.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1573-0832
    Keywords: Oral cavity ; Candida ; hydrolases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Fungi are elements of the ontocenosis of the oral cavity and causal factors of inflammatory lesions in its mucous membrane. The objective of the study was to find differences in the activity of hydrolytic enzymes of Candida albicans isolated from patients with diseases of the periodontium and mucous membrane of the oral cavity. Of 235 patients examined, 31 were diagnosed with gingivitis, 38 with glossitis, 28 with leucoplakia, 37 with adult periodontitis, 25 with juvenile periodontitis, 36 with stomatitis prothetica and 40 with stomatitis atrophica. In 196 patients (83.4 ± 2.4%), fungi belonging to Candida species were detected. In the evaluation of Candida albicans strains (146) properties, bioMerieux API ZYM tests containing substrates for the detection of 19 hydrolases were used. All the investigated strains were characterized by the activity of 14 enzymes, i.e. phosphatase alcaline, esterase (C4), esterase lipase (C8), leucine and valine arylamidase, phosphatase acid, naphthol-AS-BI-phosphohydrolase, α galactosidase, β galactosidase, α glucosidase, β glucosidase, N-acetyl-β-glucosaminidase, α mannosidase and α fucosidase. Strains isolated from the oral cavity of patients with diseases of periodontium and mucous membrane are characterised by the highest phosphatase acid activity. The greatest enzymatic activity is characteristic of Candida albicans isolated from patients with stomatitis atrophica or stomatitis prothetica, and the lowest in strains from gingivitis or juvenile periodontitis cases. Differences in the activity of hydrolases are statistically significant (p〈0.01) for: esterase (C4), leucine and valine arylamidase, phosphatase acid, naphthol-AS-BI-phosphohydrolase, β glucosidase, N-acetyl-β-glucosaminidase, of fungi isolated from patients with particular clinical diagnoses.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...