PMID- 31100308 OWN - NLM STAT- MEDLINE DCOM- 20200220 LR - 20200220 IS - 1096-0007 (Electronic) IS - 0014-4835 (Linking) VI - 186 DP - 2019 Sep TI - Elevated serum OxLDL is associated with progression of type 2 Diabetes Mellitus to diabetic retinopathy. PG - 107668 LID - S0014-4835(18)30619-5 [pii] LID - 10.1016/j.exer.2019.05.008 [doi] AB - Hyperlipidemia is associated with the progression of diabetic retinopathy (DR). Paraoxonase 1 (PON1), an esterase is known to prevent systemic LDL oxidation. This study assessed if serum oxLDL is associated with the progression of Type 2 DM to DR. This study is part of a three-year hospital based prospective study where 87 subjects were recruited. This included T2DM without DR (n = 22); Non-Proliferative (NPDR) (n = 21) and Proliferative DR (PDR) (n = 22) along with age/sex matched controls (n = 22). Serum oxLDL-Ab was estimated by ELISA. Serum PON esterase activity and plasma Malondialdehyde (MDA) level were estimated by spectrophotometry and the serum Advanced Glycation End products (AGE) level by spectroflourimetry. The systemic levels of oxLDL, AGE and MDA were increased with the progression of T2DM without DR to DR as seen by ANOVA (P < 0.05). Serum oxLDL-Ab levels showed a positive correlation to total cholesterol (P = 0.04) as evaluated in the DR group. Statin intake was found to lower PON esterase activity (P < 0.05). Based on this pilot study, it is proposed that elevated serum oxLDL should be validated in larger cohort studies to ensure it could be potential risk factor for the progression of T2DM to DR. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Kuppan, Kaviarasan AU - Kuppan K AD - Biochemistry and Cell Biology Department, Vision Research Foundation, Chennai, 600 006, India. FAU - Mohanlal, Jithu AU - Mohanlal J AD - Biochemistry and Cell Biology Department, Vision Research Foundation, Chennai, 600 006, India. FAU - Mohammad, Arif Mulla AU - Mohammad AM AD - Shri Bhagwan Mahavir Vitreo Retinal Services, Medical Research Foundation, Chennai, 600 006, India. FAU - Babu, Kannadasan Anand AU - Babu KA AD - Biochemistry and Cell Biology Department, Vision Research Foundation, Chennai, 600 006, India. FAU - Sen, Parveen AU - Sen P AD - Shri Bhagwan Mahavir Vitreo Retinal Services, Medical Research Foundation, Chennai, 600 006, India. FAU - Undurti, Narasimha Das AU - Undurti ND AD - School of Biotechnology, Jawaharlal Nehru Technological University, Kakinada, 533 003, India. FAU - Natarajan, Viswanathan AU - Natarajan V AD - Department of Biostatistics, Vision Research Foundation, Sankara Nethralaya, Chennai, 600 006, India. FAU - Narayanasamy, Angayarkanni AU - Narayanasamy A AD - Biochemistry and Cell Biology Department, Vision Research Foundation, Chennai, 600 006, India. Electronic address: drak@snmail.org. LA - eng PT - Journal Article PT - Observational Study PT - Research Support, Non-U.S. Gov't DEP - 20190514 PL - England TA - Exp Eye Res JT - Experimental eye research JID - 0370707 RN - 0 (Lipoproteins, LDL) RN - 0 (oxidized low density lipoprotein) SB - IM MH - Adult MH - Aged MH - Case-Control Studies MH - Diabetes Mellitus, Type 2/*complications MH - Diabetic Retinopathy/*blood MH - Disease Progression MH - Female MH - Humans MH - Lipoproteins, LDL/*blood MH - Male MH - Middle Aged MH - Prospective Studies MH - Risk Factors OTO - NOTNLM OT - AGE OT - Diabetic retinopathy OT - MDA OT - PON OT - T2DM OT - oxLDL EDAT- 2019/05/18 06:00 MHDA- 2020/02/23 06:00 CRDT- 2019/05/18 06:00 PHST- 2018/08/19 00:00 [received] PHST- 2019/03/30 00:00 [revised] PHST- 2019/05/13 00:00 [accepted] PHST- 2019/05/18 06:00 [pubmed] PHST- 2020/02/23 06:00 [medline] PHST- 2019/05/18 06:00 [entrez] AID - S0014-4835(18)30619-5 [pii] AID - 10.1016/j.exer.2019.05.008 [doi] PST - ppublish SO - Exp Eye Res. 2019 Sep;186:107668. doi: 10.1016/j.exer.2019.05.008. Epub 2019 May 14.