PMID- 27916496 OWN - NLM STAT- MEDLINE DCOM- 20170209 LR - 20171017 IS - 2352-3840 (Electronic) IS - 1499-2671 (Linking) VI - 41 IP - 1 DP - 2017 Feb TI - Hyperlipidemia-Mediated Increased Advanced Lipoxidation End Products Formation, an Important Factor Associated with Decreased Erythrocyte Glucose-6-Phosphate Dehydrogenase Activity in Mild Nonproliferative Diabetic Retinopathy. PG - 82-89 LID - S1499-2671(16)30134-4 [pii] LID - 10.1016/j.jcjd.2016.07.007 [doi] AB - OBJECTIVES: The present study aimed to evaluate the role of hyperlipidemia in increased formation of advanced lipoxidation end products (ALEs) and to evaluate whether there is any relationship between ALEs generation and erythrocyte glucose-6-phosphate dehydrogenase (G6PD) activity in cases of mild nonproliferative diabetic retinopathy (MNPDR). METHODS: In this study, we enrolled 100 patients with type 2 diabetes and MNPDR, 100 subjects with type 2 diabetes but without retinopathy (DNR) and 90 normal individuals without diabetes as healthy controls (HCs). Erythrocyte nicotinamide dinucleotide phosphate (NADPH), G6PD activity, serum total cholesterol, low- and high-density lipoprotein (LDL, HDL) and triglyceride levels were determined by photometric assay. Serum malondialdehyde (MDA) protein adduct and hexanoyl-lysine (HEL) were measured by an enzyme-linked immunosorbent assay (ELISA). RESULTS: A robust linear relationship was observed between MDA protein adduct and LDL or cholesterol or triglyceride levels, and HEL and LDL or cholesterol or triglyceride levels in subjects with MNPDR (p=0.0001). A significant inverse association was observed between erythrocyte G6PD activity and serum MDA protein adductor HEL levels in subjects with MNPDR (p=0.0001). CONCLUSIONS: Hyperlipidemia is an important factor that is associated with increased ALEs formation in persons with MNPDR. Increased ALEs generation was associated with decreased G6PD activity and low NADPH levels in cases of MNPDR, suggesting their detrimental role in the occurrence of early NPDR. CI - Copyright (c) 2016 Canadian Diabetes Association. Published by Elsevier Inc. All rights reserved. FAU - Choudhuri, Subhadip AU - Choudhuri S AD - Department of Biochemistry, Dr. B C Roy Post Graduate Institute of Basic Medical Education and Research, Kolkata, India; Department Laboratory Services, GD Hospital & Diabetes Institute, Kolkata, India. Electronic address: schoudhuri6@gmail.com. FAU - Roy, Pijush Kanti AU - Roy PK AD - Department Laboratory Services, GD Hospital & Diabetes Institute, Kolkata, India. FAU - Mitra, Bhaskar AU - Mitra B AD - Department of Laboratory Services, Drs. Tribedi and Roy Lab, Kolkata, India. FAU - Sen, Susruta AU - Sen S AD - Calcutta Medical Research Institute, Kolkata, India. FAU - Sarkar, Rajarshi AU - Sarkar R AD - Department Laboratory Services, GD Hospital & Diabetes Institute, Kolkata, India. FAU - Das, Mandrita AU - Das M AD - Department Laboratory Services, GD Hospital & Diabetes Institute, Kolkata, India. FAU - Biswas, Debashree AU - Biswas D AD - Department of Biochemistry, Dr. B C Roy Post Graduate Institute of Basic Medical Education and Research, Kolkata, India. FAU - Ghosh, Prithwijit AU - Ghosh P AD - Department Laboratory Services, GD Hospital & Diabetes Institute, Kolkata, India. FAU - Biswas, Ajoy AU - Biswas A AD - Department Laboratory Services, GD Hospital & Diabetes Institute, Kolkata, India. FAU - Chakraborty, Shaibal AU - Chakraborty S AD - Department Laboratory Services, GD Hospital & Diabetes Institute, Kolkata, India. FAU - Mondal, Lakshmi Kanta AU - Mondal LK AD - Regional Institute of Ophthalmology, Kolkata, India. LA - eng PT - Journal Article DEP - 20161201 PL - Canada TA - Can J Diabetes JT - Canadian journal of diabetes JID - 101148810 RN - 0 (Advanced Oxidation Protein Products) RN - 0 (Biomarkers) RN - EC 1.1.1.49 (Glucosephosphate Dehydrogenase) SB - IM MH - Adult MH - Advanced Oxidation Protein Products/*blood MH - Biomarkers/blood MH - Diabetes Mellitus, Type 2/*blood/diagnosis/epidemiology MH - Diabetic Retinopathy/*blood/diagnosis/epidemiology MH - Erythrocytes/*metabolism MH - Female MH - Glucosephosphate Dehydrogenase/*blood MH - Humans MH - Hyperlipidemias/*blood/diagnosis/epidemiology MH - Male MH - Middle Aged MH - Oxidation-Reduction OTO - NOTNLM OT - advanced lipoxidation end products (ALEs) OT - diabetic retinopathy OT - glucose-6-phosphate dehydrogenase (G6PD) OT - glucose-6-phosphate-deshydrogenase (G6PD) OT - hyperlipidemia OT - hyperlipidemie OT - mild nonproliferative diabetic retinopathy (MNPDR) OT - nicotinamide-adenine-dinucleotide phosphate reduit (NADPH) OT - produits finaux de la lipoxidation avancee (ALE pour advanced lipoxidation end products) OT - reduced nicotinamide adenine di nucleotide phosphate (NADPH) OT - retinopathie diabetique OT - retinopathie diabetique non proliferante minime (RDNP minime) EDAT- 2016/12/06 06:00 MHDA- 2017/02/10 06:00 CRDT- 2016/12/06 06:00 PHST- 2016/05/08 00:00 [received] PHST- 2016/06/16 00:00 [revised] PHST- 2016/07/25 00:00 [accepted] PHST- 2016/12/06 06:00 [pubmed] PHST- 2017/02/10 06:00 [medline] PHST- 2016/12/06 06:00 [entrez] AID - S1499-2671(16)30134-4 [pii] AID - 10.1016/j.jcjd.2016.07.007 [doi] PST - ppublish SO - Can J Diabetes. 2017 Feb;41(1):82-89. doi: 10.1016/j.jcjd.2016.07.007. Epub 2016 Dec 1.