New locus for skin intrinsic fluorescence in type 1 diabetes also associated with blood and skin glycated proteins

  • Delnaz Roshandel
  • , Ronald Klein
  • , Barbara E.K. Klein
  • , Bruce H.R. Wolffenbuttel
  • , Melanie M. Van Der Klauw
  • , Jana V. Van Vliet-Ostaptchouk
  • , Gil Atzmon
  • , Danny Ben-Avraham
  • , Jill P. Crandall
  • , Nir Barzilai
  • , Shelley B. Bull
  • , Angelo J. Canty
  • , S. Mohsen Hosseini
  • , Linda T. Hiraki
  • , John Maynard
  • , David R. Sell
  • , Vincent M. Monnier
  • , Patricia A. Cleary
  • , Barbara H. Braffett
  • , Andrew D. Paterson

Research output: Contribution to journalArticlepeer-review

Abstract

Skin fluorescence (SF) noninvasively measures advanced glycation end products (AGEs) in the skin and is a risk indicator for diabetes complications. N-acetyltransferase 2 (NAT2) is the only known locus influencing SF. We aimed to identify additional genetic loci influencing SF in type 1 diabetes (T1D) through a meta-analysis of genomewide association studies (N = 1,359) including Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications (DCCT/EDIC) and Wisconsin Epidemiologic Study of Diabetic Retinopathy (WESDR). A locus on chromosome 1, rs7533564 (P = 1.9 × 10-9), was associated with skin intrinsic fluorescence measured by SCOUT DS (excitation 375 nm, emission 435-655 nm), which remained significant after adjustment for time-weighted HbA1c (P = 1.7 × 10-8). rs7533564 was associated with mean HbA1c in meta-analysis (P = 0.0225), mean glycated albumin (P = 0.0029), and glyoxal hydroimidazolones (P = 0.049), an AGE measured in skin biopsy collagen, in DCCT. rs7533564 was not associated with diabetes complications in DCCT/EDIC or with SF in subjects without diabetes (nondiabetic [ND]) (N = 8,721). In conclusion, we identified a new locus associated with SF in T1D subjects that did not show similar effect in ND subjects, suggesting a diabetes-specific effect. This association needs to be investigated in type 2 diabetes.

Original languageEnglish
Pages (from-to)2060-2071
Number of pages12
JournalDiabetes
Volume65
Issue number7
DOIs
StatePublished - 1 Jul 2016

Bibliographical note

Publisher Copyright:
© 2016 by the American Diabetes Association.

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism

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