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Atzeni IM, Boersema J, Pas HH, Diercks GF, Scheijen JL, Schalkwijk CG, Mulder DJ, van der Zee P, Smit AJ. Is skin autofluorescence (SAF) representative of dermal advanced glycation endproducts (AGEs) in dark skin? A pilot study. Heliyon 2020; 6:e05364. [PMID: 33241137 PMCID: PMC7674296 DOI: 10.1016/j.heliyon.2020.e05364] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 07/24/2020] [Accepted: 10/26/2020] [Indexed: 01/17/2023] Open
Abstract
Aims Non-invasively assessed skin autofluorescence (SAF) measures advanced glycation endproducts (AGEs) in the dermis. SAF correlates with dermal AGEs in Caucasians and Asians, but studies in dark-skinned subjects are lacking. In this pilot we aimed to assess whether SAF signal is representative of intrinsic fluorescence (IF) and AGE accumulation in dark skin. Methods Skin biopsies were obtained in 12 dark-skinned subjects (6 healthy subjects, median age 22 years; 6 diabetes mellitus (DM) subjects, 65 years). SAF was measured with the AGE Reader, IF using confocal microscopy, and AGE distribution with specific antibodies. CML and MG-H1 were quantified with UPLC-MS/MS and pentosidine with HPLC and fluorescent detection. Results SAF correlated with IF from the dermis (405nm, r = 0.58, p < 0.05), but not with CML (r = 0.54, p = 0.07). CML correlated with IF from the dermis (405nm, r = 0.90, p < 0.01). UV reflectance and the coefficient of variation of SAF were negatively correlated (r = -0.80, p < 0.01). CML and MG-H1 were predominantly present around blood vessels, in collagen and fibroblasts in the dermis. Conclusion This proof of concept study is the first to compare non-invasive SAF with AGE levels measured in skin biopsies in dark-skinned subjects. SAF did not correlate with individual AGEs from biopsies, but was associated with IF. However, the intra-individual variance was high, limiting its application in dark-skinned subjects on an individual basis.
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Affiliation(s)
- Isabella M. Atzeni
- Department of Internal Medicine, Division of Vascular Medicine (I.M.A., J.B., D.J.M., A.J.S.), Department of Dermatology, Division of Dermatology (H.H.P.) and Department of Pathology and Medical Biology, Division of Pathology (G.F.H.D.), University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
- Corresponding author.
| | - Jeltje Boersema
- Department of Internal Medicine, Division of Vascular Medicine (I.M.A., J.B., D.J.M., A.J.S.), Department of Dermatology, Division of Dermatology (H.H.P.) and Department of Pathology and Medical Biology, Division of Pathology (G.F.H.D.), University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
| | - Hendri H. Pas
- Department of Internal Medicine, Division of Vascular Medicine (I.M.A., J.B., D.J.M., A.J.S.), Department of Dermatology, Division of Dermatology (H.H.P.) and Department of Pathology and Medical Biology, Division of Pathology (G.F.H.D.), University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
| | - Gilles F.H. Diercks
- Department of Internal Medicine, Division of Vascular Medicine (I.M.A., J.B., D.J.M., A.J.S.), Department of Dermatology, Division of Dermatology (H.H.P.) and Department of Pathology and Medical Biology, Division of Pathology (G.F.H.D.), University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
| | - Jean L.J.M. Scheijen
- Department of Internal Medicine (J.L.J.M.S., C.G.S.), Maastricht University Medical Center, Debeyelaan 25, 6202 AZ, Maastricht, the Netherlands
| | - Casper G. Schalkwijk
- Department of Internal Medicine (J.L.J.M.S., C.G.S.), Maastricht University Medical Center, Debeyelaan 25, 6202 AZ, Maastricht, the Netherlands
| | - Douwe J. Mulder
- Department of Internal Medicine, Division of Vascular Medicine (I.M.A., J.B., D.J.M., A.J.S.), Department of Dermatology, Division of Dermatology (H.H.P.) and Department of Pathology and Medical Biology, Division of Pathology (G.F.H.D.), University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
| | - Piet van der Zee
- DiagnOptics Technologies (P.v.d.Z.), Aarhusweg 4-9, 9723 JJ, Groningen, the Netherlands
| | - Andries J. Smit
- Department of Internal Medicine, Division of Vascular Medicine (I.M.A., J.B., D.J.M., A.J.S.), Department of Dermatology, Division of Dermatology (H.H.P.) and Department of Pathology and Medical Biology, Division of Pathology (G.F.H.D.), University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
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