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Featured Article :. Characterization of Circulating and Endothelial Progenitor Cells in Patients With Extreme-Duration Type 1 Diabetes. Sonia L. Hernandez, Jennifer H. Gong, Liming Chen, I-Hsien Wu, Jennifer K. Sun, Hillary A. Keenan, and George L. King. Diabetes Care Volume 37: 2193-2201

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Featured Article :

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  1. Featured Article: Characterization of Circulating and Endothelial Progenitor Cells in Patients With Extreme-Duration Type 1 Diabetes Sonia L. Hernandez, Jennifer H. Gong, Liming Chen, I-Hsien Wu, Jennifer K. Sun, Hillary A. Keenan, and George L. King Diabetes Care Volume 37: 2193-2201 August, 2014

  2. STUDY OBJECTIVE • To characterize and correlate endothelial progenitor cells (EPCs) and circulating progenitor cells (CPCs) with lack of vascular complications • Patients had type 1 diabetes for ≥50 years and were from the Joslin Medalist Study Hernandez S. L. et al. Diabetes Care 2014;37:2193-2201

  3. STUDY DESIGN AND METHODS • EPC and CPC levels were ascertained by flow cytometry and compared among • Medalists with or without diabetic retinopathy (DR), neuropathy, diabetic nephropathy (DN), and cardiovascular disease (CVD) and age-matched control subjects, type 2 diabetic patients, and younger type 1 diabetic patients • Mitogens, inflammatory cytokines, and oxidative markers were measured in blood or urine • Migration of cultured peripheral bloodmononuclear cells (PBMCs) from Medalists and age-matched control subjects were compared Hernandez S. L. et al. Diabetes Care 2014;37:2193-2201

  4. Hernandez S. L. et al. Diabetes Care 2014;37:2193-2201

  5. RESULTS • Medalists’ EPC and CPC levels: • • Equaled those of their nondiabetic age-matched control subjects • • Were 10% higher than those in younger type 1 diabetic patients • • Were 20% higher than those in age-matched type 2 diabetic patients • CPC levels were 15% higher in Medalists without CVD and nephropathy than in those affected Hernandez S. L. et al. Diabetes Care 2014;37:2193-2201

  6. RESULTS • EPC levels were significantly higher in those without peripheral vascular disease (PVD) than those with PVD • Stromal-derived factor 1 (SDF-1) levels were higher in Medalists with CVD, DN, and DR than in those not affected and their control subjects • IGF-I levels were lower in Medalists and correlated inversely with CPC levels • Cultured PBMCs from Medalists migrated more than those from nondiabetic control subjects Hernandez S. L. et al. Diabetes Care 2014;37:2193-2201

  7. Hernandez S. L. et al. Diabetes Care 2014;37:2193-2201

  8. CONCLUSIONS • Normal levels of EPC and CPC in the Medalists indicate that endogenous factors neutralize the adverse effects of metabolic abnormalities of diabetes on vascular tissues Hernandez S. L. et al. Diabetes Care 2014;37:2193-2201

  9. Hernandez S. L. et al. Diabetes Care 2014;37:2193-2201

  10. Hernandez S. L. et al. Diabetes Care 2014;37:2193-2201

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