PMID- 23964994 OWN - NLM STAT- MEDLINE DCOM- 20140317 LR - 20171116 IS - 1557-8593 (Electronic) IS - 1520-9156 (Linking) VI - 15 IP - 9 DP - 2013 Sep TI - Variability of skin autofluorescence measurement over 6 and 12 weeks and the influence of benfotiamine treatment. PG - 733-7 LID - 10.1089/dia.2013.0103 [doi] AB - BACKGROUND: Measurements of skin autofluorescence (SAF) allow for a simple and noninvasive quantification of tissue advanced glycation end-products (AGEs), a marker linked to the risk of diabetes complications. The aim of this study was to test the repeatability of SAF over 6 and 12 weeks and to test whether benfotiamine, a thiamine prodrug suggested to reduce AGEs formation under hyperglycemic conditions, is able to attenuate SAF when administered over 6 weeks. PATIENTS AND METHODS: In a double-blind, placebo-controlled, randomized, crossover study, 22 patients with type 2 diabetes mellitus (T2DM) received 900 mg/day benfotiamine or placebo for 6 weeks (washout period of 6 weeks between). At the beginning and at the end of each treatment period, SAF was assessed in the fasting state, as well as 2, 4, and 6 h following a mixed test meal. RESULTS: The respective intra-individual and inter-individual variability of fasting SAF was 6.9% and 24.5% within 6 weeks and 10.9% and 23.1% within 12 weeks. The respective variability calculated for triplicate comparisons was 9.9% and 27.7%. A short-term therapy with benfotiamine did not influence SAF significantly, nor did we find a significant postprandial SAF increase. CONCLUSIONS: In patients with T2DM, repeated, timely spaced SAF measurements have an intra-subject variability of below 11%. Using these data, sample sizes were calculated for interventional studies aiming at reducing SAF. Benfotiamine treatment for 6 weeks did not significantly influence SAF; for this, a longer-term therapy is probably needed. FAU - Stirban, Alin AU - Stirban A AD - Diabetes Clinic, Heart and Diabetes Center NR, Ruhr University Bochum, Bad Oeynhausen, Germany. alin.stirban@profil.com FAU - Pop, Alexandra AU - Pop A FAU - Fischer, Annelie AU - Fischer A FAU - Heckermann, Sascha AU - Heckermann S FAU - Tschoepe, Diethelm AU - Tschoepe D LA - eng PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20130821 PL - United States TA - Diabetes Technol Ther JT - Diabetes technology & therapeutics JID - 100889084 RN - 0 (Chelating Agents) RN - 0 (Glycation End Products, Advanced) RN - X66NSO3N35 (Thiamine) RN - Y92OUS2H9B (benphothiamine) SB - IM MH - Adult MH - Aged MH - Chelating Agents/*therapeutic use MH - Cross-Over Studies MH - Diabetes Complications/*diagnosis/*drug therapy MH - Diabetes Mellitus, Type 2/drug therapy MH - Double-Blind Method MH - Female MH - Fluorescence MH - Glycation End Products, Advanced/metabolism MH - Humans MH - Hyperglycemia/blood MH - Male MH - Middle Aged MH - Postprandial Period/physiology MH - Reproducibility of Results MH - Skin/*drug effects MH - Thiamine/*analogs & derivatives/therapeutic use EDAT- 2013/08/24 06:00 MHDA- 2014/03/19 06:00 CRDT- 2013/08/23 06:00 PHST- 2013/08/23 06:00 [entrez] PHST- 2013/08/24 06:00 [pubmed] PHST- 2014/03/19 06:00 [medline] AID - 10.1089/dia.2013.0103 [doi] PST - ppublish SO - Diabetes Technol Ther. 2013 Sep;15(9):733-7. doi: 10.1089/dia.2013.0103. Epub 2013 Aug 21.