Proteomics reveals novel oxidative and glycolytic mechanisms in type 1 diabetic patients' skin which are normalized by kidney-pancreas transplantation

Franco Folli, Valeria Guzzi, Lucia Perego, Dawn K. Coletta, Giovanna Finzi, Claudia Placidi, Stefano la Rosa, Carlo Capella, Carlo Socci, Davide Lauro, Devjit Tripathy, Christopher Jenkinson, Rita Paroni, Elena Orsenigo, Giuliana Cighetti, Luisa Gregorini, Carlo Staudacher, Antonio Secchi, Angela Bachi, Michael BrownleePaolo Fiorina

Research output: Contribution to journalArticle

42 Scopus citations

Abstract

Background: In type 1 diabetes (T1D) vascular complications such as accelerated atherosclerosis and diffused macro-/ microangiopathy are linked to chronic hyperglycemia with a mechanism that is not yet well understood. End-stage renal disease (ESRD) worsens most diabetic complications, particularly, the risk of morbidity and mortality from cardiovascular disease is increased several fold. Methods and Findings: We evaluated protein regulation and expression in skin biopsies obtained from T1D patients with and without ESRD, to identify pathways of persistent cellular changes linked to diabetic vascular disease. We therefore examined pathways that may be normalized by restoration of normoglycemia with kidney-pancreas (KP) transplantation. Using proteomic and ultrastructural approaches, multiple alterations in the expression of proteins involved in oxidative stress (catalase, superoxide dismutase 1, Hsp27, Hsp60, ATP synthase δ chain, and flavin reductase), aerobic and anaerobic glycolysis (ACBP, pyruvate kinase muscle isozyme, and phosphoglycerate kinase 1), and intracellular signaling (stratifin-14-3- 3, S100-calcyclin, cathepsin, and PPI rotamase) as well as endothelial vascular abnormalities were identified in T1D and T1D+ESRD patients. These abnormalities were reversed after KP transplant. Increased plasma levels of malondialdehyde were observed in T1D and T1D+ESRD patients, confirming increased oxidative stress which was normalized after KP transplant. Conclusions: Our data suggests persistent cellular changes of anti-oxidative machinery and of aerobic/anaerobic glycolysis are present in T1D and T1D+ESRD patients, and these abnormalities may play a key role in the pathogenesis of hyperglycemia-related vascular complications. Restoration of normoglycemia and removal of uremia with KP transplant can correct these abnormalities. Some of these identified pathways may become potential therapeutic targets for a new generation of drugs.

Original languageEnglish (US)
Article numbere9923
JournalPloS one
Volume5
Issue number3
DOIs
StatePublished - 2010
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

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    Folli, F., Guzzi, V., Perego, L., Coletta, D. K., Finzi, G., Placidi, C., la Rosa, S., Capella, C., Socci, C., Lauro, D., Tripathy, D., Jenkinson, C., Paroni, R., Orsenigo, E., Cighetti, G., Gregorini, L., Staudacher, C., Secchi, A., Bachi, A., ... Fiorina, P. (2010). Proteomics reveals novel oxidative and glycolytic mechanisms in type 1 diabetic patients' skin which are normalized by kidney-pancreas transplantation. PloS one, 5(3), [e9923]. https://doi.org/10.1371/journal.pone.0009923