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- Elbir, H, et al.
(författare)
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Ovine clone ST1464: a predominant genotype of Staphylococcus aureus subsp. anaerobius isolated from sheep in Sudan
- 2010
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Ingår i: Journal of infection in developing countries. - : Journal of Infection in Developing Countries. - 1972-2680. ; 4:4, s. 235-238
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Tidskriftsartikel (refereegranskat)abstract
- Background: The aim of the present study was to examine the phenotypic and genotypic relatedness of 17 Staphylococcus aureus subsp. anaerobius isolates recovered from sheep abscesses in Khartoum state, Sudan, during the period 2007-2008. Methodology: This sample was characterised using antibiogram typing, biochemical typing with the commercial PhenePlate system (PhP-CS) and multilocus sequence typing (MLST). Results: Low levels of resistance were noted to the 11 antimicrobial agents tested. All the isolates corresponded to a single PhP type, and to a single, novel, multilocus sequence type, designated ST1464. Conclusion: These results demonstrate that the vast majority of cases of sheep abscess disease in Khartoum state are caused by a single novel clone of S. aureus subsp. anaerobius.
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- Jacobsson, Gunnar, 1960, et al.
(författare)
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Antibody responses in patients with invasive Staphylococcus aureus infections.
- 2010
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Ingår i: European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology. - : Springer Science and Business Media LLC. - 1435-4373 .- 0934-9723. ; 29:6, s. 715-25
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Tidskriftsartikel (refereegranskat)abstract
- Correlation between antibody response and clinical outcome in Staphylococcus aureus bacteremia has yielded conflicting results. Immunization schedules have failed in clinical trials. Is the humoral response toward S. aureus of protective nature? A prospective study was performed in patients with invasive S. aureus (ISA) infections during the period 2003-2005. The antibody levels were determined at the beginning and at the end of treatment and one month later (n = 96, n = 71, and n = 51, respectively). As controls, 115 healthy individuals were used. A quantitative enzyme-linked immunosorbent assay (ELISA) against eight purified antigens was performed. Bacterial isolates were grouped as to the production of alpha-toxin, agr type, and pulsed-field gel electrophoresis (PFGE) type. Large variations were seen in the antibody levels. The levels in the second sample were the highest. A correlation between agr group, PFGE group, alpha-toxin production, and initial antibody levels was observed. Patients with fatal outcome displayed lower initial antibody levels to all antigens and significantly so in regard to teichoic acid, lipase, enterotoxin A, and scalded skin syndrome toxin. In episodes with complicated bacteremia, initial significantly low levels to teichoic acid and lipase were registered. Low initial antibody levels against several antigens were associated with increased mortality and complicated bacteremia in invasive S. aureus infections. Bacterial properties, strain, and toxin production affected the antibody response.
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