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Träfflista för sökning "WFRF:(Tingström Anders) srt2:(1990-1994);pers:(Terracio L)"

Sökning: WFRF:(Tingström Anders) > (1990-1994) > Terracio L

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  • Reuterdahl, C, et al. (författare)
  • Characterization of platelet-derived growth factor beta-receptor expressing cells in the vasculature of human rheumatoid synovium
  • 1991
  • Ingår i: Laboratory Investigation. - 1530-0307. ; 64:3, s. 321-329
  • Tidskriftsartikel (refereegranskat)abstract
    • Platelet-derived growth factor (PDGF) beta-receptor expression in normal and rheumatoid synovia was investigated by double immunofluorescence staining of frozen sections and by in situ hybridization. In the inflamed synovia, PDGF beta-receptor mRNA was present in vascular cells, as well as in discrete stromal cells. PDGF beta-receptor expressing cells in rheumatoid synovia were characterized by double immunofluorescence staining using the PDGFR-B2 monoclonal antibody at a concentration at which this antibody merely stained granular accumulations of PDGF beta-receptors. Granular accumulations of PDGF beta-receptors were articulate in blood vessel cells, but also appeared in discrete stromal cells. Thus, the overall distribution of cells having granular accumulations of PDGF beta-receptors was similar to the distribution of cells expressing PDGF beta-receptor mRNA. Double immunofluorescence stainings showed that: (a) a majority (greater than 90%) of resident macrophages did not express granular PDGF beta-receptor staining, but macrophages were often juxtaposed to PDGF beta-receptor-positive cells; (b) T lymphocytes did not express PDGF beta-receptors, but these cells were frequently found in the proximity of cells stained by PDGFR-B2; (c) in some blood vessels both HLA-DR expressing cells and PDGF beta-receptor expressing cells could be visualized, whereas in other blood vessels, cells expressing only one of these activation markers could be detected; (d) smooth muscle cells in blood vessels contained PDGF beta-receptors; and (e) capillary endothelial cells in the inflamed synovia recurrently displayed granular PDGF beta-receptor staining. The granular accumulations of PDGF beta-receptors may reflect internalization of the receptor as a result of paracrine or autocrine ligand stimulation. In support of such a possibility are the findings that elevated levels of PDGF B chain mRNA were detected by in situ hybridization in the inflamed synovia, and that cells expressing PDGF B chain mRNA were distributed similarly to cells expressing PDGF beta-receptor mRNA. Taken together, the results indicate that PDGF has a role in the inflammatory process in rheumatoid synovitis, most likely by stimulating proliferative events in the vasculature.
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
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Tingström, Anders (2)
Funa, K (1)
Rubin, K (1)
Rubin, Kristofer (1)
Olsson, L (1)
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Heldin, C H (1)
Borg, T.K. (1)
Gullberg, Donald (1)
Thuresson, A C (1)
Reuterdahl, C (1)
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Lunds universitet (1)
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Medicin och hälsovetenskap (1)

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