Journal of Ginseng Research

The Korean Society of Ginseng (고려인삼학회)
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Ginseng total saponin modulates podocyte p130Cas in diabetic condition

  • Ha, Tae-Sun (Department of Pediatrics, College of Medicine, Chungbuk National University) ;
  • Lee, Jin-Seok (Department of Pediatrics, College of Medicine, Chungbuk National University) ;
  • Choi, Ji-Young (Department of Pediatrics, College of Medicine, Chungbuk National University) ;
  • Park, Hye-Young (Department of Pediatrics, College of Medicine, Chungbuk National University)
  • Received : 2012.08.16
  • Accepted : 2012.10.27
  • Published : 2013.01.15
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Abstract

Proteinuric conditions demonstrate structural and compositional changes of the foot processes and slit diaphragms between podocytes. p130Cas in podocytes serves as an adapter protein anchoring glomerular basement membrane to actin filaments of podocyte cytoskeleton. To investigate the effect of ginseng total saponin (GTS) on the pathologic changes of podocyte p130Cas induced by diabetic conditions, we cultured mouse podocytes under: 1) normal glucose (5 mM, control); 2) high glucose (HG, 30 mM); 3) advanced glycosylation endproducts (AGE)-added; or 4) HG plus AGE-added conditions and treated with GTS. In confocal imaging, p130Cas colocalized with zonula occludens-1 and synaptopodin connecting to F-actin. However, diabetic conditions relocalized p130Cas molecules at perinuclear cytoplasmic area and reduced the intensity of p130Cas. In Western blotting, diabetic conditions, especially HG plus AGE-added condition, decreased cellular p130Cas protein levels at 24 and 48 h. GTS improved such quantitative and qualitative changes. These findings imply that HG and AGE have an influence on the redistribution and amount of p130Cas of podocytes, which can be reversed by GTS.

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References

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