{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,8]],"date-time":"2026-05-08T23:43:01Z","timestamp":1778283781296,"version":"3.51.4"},"reference-count":33,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2009,4,29]],"date-time":"2009-04-29T00:00:00Z","timestamp":1240963200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diabetes Metabolism Res"],"published-print":{"date-parts":[[2009,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Diabetic patients exhibit an increased risk of saphenous graft occlusion after coronary bypass. Advanced glycation end products (AGEs) are ubiquitous signalling proteins that are associated with vascular and neurological complication of diabetes. The aim of this study is to verify whether AGE levels may promote endothelial cell alterations responsible for vein graft failure.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Segments of saphenous vein were obtained from both normal people and diabetic patients (HbA<jats:sub>1c<\/jats:sub> &lt; 6.0%) at the time of coronary surgery. Cultured endothelial cells were incubated in the absence\/presence of AGEs (2 and 20 \u00b5M), and mRNA and protein for both receptor of AGEs (RAGE) and peroxisome proliferator\u2010activated receptors\u2010\u03b3 (PPAR\u2010\u03b3) were analysed by real\u2010time polymerised chain reaction (PCR) and Western blot analysis. In the same fashion, the cell release of reactive oxygen species (ROS) was estimated in the absence\/presence of AGEs by spectrofluorimetric analysis. Finally, neutrophil\u2010endothelial adhesion was evaluated in saphenous vein segments with and without the addition of AGEs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>AGEs activated in a dose\u2010dependent manner the expression of RAGE and inhibited PPAR\u2010\u03b3 expression in endothelial cells as testified by both reverse transcription\u2010PCR (RT\u2010PCR) and Western blot analysis. Stimulation of cultured endothelial cells with AGEs significantly enhanced intracellular ROS formation in a dose\u2010dependent manner. Finally, neutrophil\u2010endothelial adhesion was significantly increased after incubation of control veins with AGEs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>These findings indicate that even in diabetic patients with HbA<jats:sub>1c<\/jats:sub> &lt; 6.0%, elevated serum levels of AGE determine a sort of a pro\u2010thrombotic state, providing a common mechanism that could explain the increased rate of vein graft occlusion in this population. Copyright \u00a9 2009 John Wiley &amp; Sons, Ltd.<\/jats:p><\/jats:sec>","DOI":"10.1002\/dmrr.966","type":"journal-article","created":{"date-parts":[[2009,4,29]],"date-time":"2009-04-29T13:31:06Z","timestamp":1241011866000},"page":"420-426","source":"Crossref","is-referenced-by-count":14,"title":["Advanced glycation end products in diabetic patients with optimized glycaemic control and their effects on endothelial reactivity: possible implications in venous graft 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