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  • 1
    Digitale Medien
    Digitale Medien
    Development of injury in a rat model of chronic renal allograft rejection: effect of dietary protein restriction (1999)
    Springer
    Transplant international 12 (1999), S. 18-26 
    Details
    ISSN: 1432-2277
    Schlagwort(e): Key words Renal transplantation ; chronic rejection ; dietary protein restriction ; Dietary protein restriction ; chronic rejection ; renal transplantation ; Chronic rejection ; dietary protein restriction ; renal transplantation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Non-allogeneic factors such as increased nephron “workload” may contribute to chronic renal allograft rejection. Reducing dietary protein from 20 % to 8 % was tested in a model of chronic rejection: Dark Agouti kidney to Albino Surgery recipient, “tolerised” by previous donor blood transfusions. Survival, weight gain, serum creatinine concentration and creatinine clearance were similar for both groups at all times. Urinary protein was significantly (P 〈 0.05) lower in the low-protein (LP) group 1 month after transplantation. After 3 and 6 months, both groups demonstrated mild chronic rejection. After 6 months, tubular atrophy was significantly (P 〈 0.05) less in the LP group and interstitial fibrosis was marginally reduced. Glomerular hypertrophy, glomerular sclerosis, tubular dilatation, leucocyte infiltration, adhesion molecule expression and TGF-β 1 mRNA expression were similarly increased in both groups. Thus, reducing dietary protein to 8 % lowered urinary protein, but did not significantly affect the development of chronic rejection in renal allografts beyond affording a degree of protection from tubulointerstitial damage.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s001470050180
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Increased expression of basic fibroblast growth factor during chronic rejection in intestinal transplants is associated with macrophage infiltrates (1999)
    Springer
    Transplant international 12 (1999), S. 42-49 
    Details
    ISSN: 1432-2277
    Schlagwort(e): Key words Basic fibroblast growth factor ; chronic rejection ; small bowel transplantation ; Small bowel transplantation ; macrophage infiltration ; chronic rejection ; Chronic rejection ; small bowel transplantation ; basic fibroplast growth factor ; Macrophage infiltration ; chronic rejection ; small bowel transplantation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Long-term survival of intestinal transplants is hampered by chronic rejection (CR). Since transplants with CR demonstrate fibrotic changes, the cytokine basic fibroblast growth factor (bFGF) may be involved in the tissue remodelling of chronic intestinal rejection. The aim of this study was to investigate the bFGF gene and protein expression and distribution in chronically rejecting intestinal allografts. Orthotopic small bowel transplantation was performed in the allogeneic DA-to-AS rat combination. Cyclosporin was administered temporarily to prevent acute rejection. Controls were DA isografts and normal DA. bFGF gene expression was evaluated using reverse transcriptase polymerase chain reaction (RT-PCR) of the ileum RNA and was standardized against Glyceraldehyde-3-phosphate-dehydrogenase (GAPDH) expression. bFGF protein was determined using immunohistochemistry. To identify the bFGF-positive cell type, sequential sections were stained for cell markers. Allografts showed histological features of CR, whereas isografts preserved normal architecture. bFGF gene expression was present in normal ileum and significantly upregulated in allografts. Immunohistochemical staining showed a significant increase in bFGF protein compared to isografts. Most bFGF-positive cells were localized in the submucosa and muscularis, particularly around the neural plexus. bFGF-positive cells appeared to be ED-2-positive macrophages, strongly suggesting that the site of bFGF production is the activated macrophage. This study demonstrates increased bFGF mRNA and protein in chronically rejecting intestinal allografts that appear to be produced by macrophages.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s001470050183
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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