PMID- 23238657 OWN - NLM STAT- MEDLINE DCOM- 20131202 LR - 20211021 IS - 1935-5548 (Electronic) IS - 0149-5992 (Print) IS - 0149-5992 (Linking) VI - 36 IP - 5 DP - 2013 May TI - Acute macrovascular dysfunction in patients with type 2 diabetes induced by ingestion of advanced glycated beta-lactoglobulins. PG - 1278-82 LID - 10.2337/dc12-1489 [doi] AB - OBJECTIVE: Recent evidence indicates that heat-enhanced food advanced glycation end products (AGEs) adversely affect vascular function. The aim of this study was to examine the acute effects of an oral load of heat-treated, AGE-modified beta-lactoglobulins (AGE-BLG) compared with heat-treated, nonglycated BLG (C-BLG) on vascular function in patients with type 2 diabetes mellitus (T2DM). RESEARCH DESIGN AND METHODS: In a double-blind, controlled, randomized, crossover study, 19 patients with T2DM received, on two different occasions, beverages containing either AGE-BLG or C-BLG. We measured macrovascular [brachial ultrasound of flow-mediated dilatation (FMD)] and microvascular (laser-Doppler measurements of reactive hyperemia in the hand) functions at baseline (T0), 90 (T90), and 180 (T180) min. RESULTS: Following the AGE-BLG, FMD decreased at T90 by 80% from baseline and remained decreased by 42% at T180 (P < 0.05 vs. baseline, P < 0.05 vs. C-BLG at T90). By comparison, following C-BLG, FMD decreased by 27% at T90 and 51% at T180 (P < 0.05 vs. baseline at T180). A significant decrease in nitrite (T180) and nitrate (T90 and T180), as well as a significant increase in N(epsilon)-carboxymethyllisine, accompanied intake of AGE-BLG. There was no change in microvascular function caused by either beverage. CONCLUSIONS: In patients with T2DM, acute oral administration of a single AGE-modified protein class significantly though transiently impaired macrovascular function in concert with decreased nitric oxide bioavailability. These AGE-related changes were independent of heat treatment. FAU - Stirban, Alin AU - Stirban A AD - Ruhr University Bochum, Bad Oeynhausen, Germany. alin.stirban@profil.com FAU - Kotsi, Paraskevi AU - Kotsi P FAU - Franke, Knut AU - Franke K FAU - Strijowski, Ulf AU - Strijowski U FAU - Cai, Weijing AU - Cai W FAU - Gotting, Christian AU - Gotting C FAU - Tschoepe, Diethelm AU - Tschoepe D LA - eng SI - ClinicalTrials.gov/NCT01456026 GR - R01 DK091231/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20121213 PL - United States TA - Diabetes Care JT - Diabetes care JID - 7805975 RN - 0 (Glycation End Products, Advanced) RN - 0 (Lactoglobulins) SB - IM MH - Adult MH - Aged MH - Cross-Over Studies MH - Diabetes Mellitus, Type 2/*metabolism/*physiopathology MH - Female MH - Glycation End Products, Advanced/*adverse effects MH - Humans MH - Lactoglobulins/*adverse effects MH - Male MH - Microcirculation/drug effects MH - Middle Aged PMC - PMC3631855 EDAT- 2012/12/15 06:00 MHDA- 2013/12/16 06:00 PMCR- 2014/05/01 CRDT- 2012/12/15 06:00 PHST- 2012/12/15 06:00 [entrez] PHST- 2012/12/15 06:00 [pubmed] PHST- 2013/12/16 06:00 [medline] PHST- 2014/05/01 00:00 [pmc-release] AID - dc12-1489 [pii] AID - 1489 [pii] AID - 10.2337/dc12-1489 [doi] PST - ppublish SO - Diabetes Care. 2013 May;36(5):1278-82. doi: 10.2337/dc12-1489. Epub 2012 Dec 13.