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Träfflista för sökning "L773:0903 4641 srt2:(1995-1999)"

Sökning: L773:0903 4641 > (1995-1999)

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  • Hogevik, Harriet, et al. (författare)
  • Virulence factors of Staphylococcus aureus strains causing infective endocarditis--a comparison with strains from skin infections.
  • 1998
  • Ingår i: APMIS : acta pathologica, microbiologica, et immunologica Scandinavica. - : Wiley. - 0903-4641 .- 0903-465X .- 1600-5503 .- 1600-0463. ; 106:9, s. 901-8
  • Tidskriftsartikel (refereegranskat)abstract
    • The objective was to study potential bacterial virulence factors in S. aureus endocarditis. S. aureus strains isolated from patients with well-classified episodes of infective endocarditis (IE) (n=26) were compared with control S. aureus strains from consecutive patients with skin infections (n=30). The potential virulence factors studied were Staphylococcal enterotoxin A-D (SEA, SEB, SEC, SED) and toxic shock syndrome toxin-1 (TSST-1) production and binding capacity to the extracellular matrix proteins: fibronectin, collagen type I, collagen type II and bone sialoprotein (BSP). None of the potential virulence factors studied was more prevalent among the IE strains. BSP binding was more often found in the control group with skin infections. Endocarditis patients with previous damage of the heart valves were more often infected by strains not producing any enterotoxin. No correlation was found between the potential bacterial virulence factors studied and IE. Concerning the toxins known to act as superantigens (SEA-E and TSST-1), the tendencies in this and other studies indicate that a larger study group might identify them as pathogenic factors in a subgroup of staphylococcal endocarditis.
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  • Ander, S J, et al. (författare)
  • Revascularisation of human parathyroid tissue transplanted to athymic mice.
  • 1997
  • Ingår i: APMIS : acta pathologica, microbiologica, et immunologica Scandinavica. - 0903-4641. ; 105:12, s. 931-40
  • Tidskriftsartikel (refereegranskat)abstract
    • The revascularisation process of transplanted human normal, hyperplastic and adenomatous parathyroid tissue was analysed at 2 and 4 days and 1, 2, 4, 7 and 12 weeks after transplantation to athymic mice. The transplants were examined by light and electron microscopy, immunohistochemistry and autoradiography. Vessels were detected by monoclonal antibodies specific for mouse and human endothelial cells. Immunohistochemistry demonstrated ingrowth of vessels from the host into the transplant and at one week numerous capillary sprouts were observed in the peripheral parts of the transplants. During the first week, peak levels of proliferation (labelling index) were observed in endothelial cells and capsular fibroblasts, and the proliferative capacity of endothelial cells was most pronounced in adenoma transplants. Fenestrated capillaries were observed in hyperplastic and adenomatous transplants, but not in transplants of normal tissue. In conclusion, revascularisation of transplanted human parathyroid tissue is enabled by ingrowth of vessels from the host into the transplant. The proliferative capacity of endothelial cells is higher and the process of maturation is faster in hyperplastic and adenomatous tissue compared to normal tissue.
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  • Resultat 1-10 av 57

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