PMID- 35153496 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220501 IS - 1178-7007 (Print) IS - 1178-7007 (Electronic) IS - 1178-7007 (Linking) VI - 15 DP - 2022 TI - Decreased Levels of miR-126 and miR-132 in Plasma and Vitreous Humor of Non-Proliferative Diabetic Retinopathy Among Subjects with Type-2 Diabetes Mellitus. PG - 345-358 LID - 10.2147/DMSO.S346097 [doi] AB - PURPOSE: Diabetic retinopathy (DR), the leading cause of blindness among working adults, is an urgent public health problem as diabetes mellitus (DM) is increasing at an alarming rate. Hyperglycemia-induced endothelial dysfunction is the principal contributing factor leading to the development of microangiopathy. Altered levels of microRNA (miR), the negative regulator of protein-coding genes, have been observed and considered to be markers for DR. Present study aimed to find out whether miR levels in plasma could be effective biomarkers to differentiate between type 2 diabetes mellitus (T2DM) with non-proliferative retinopathy (NPDR) from T2DM with no-DR (DNR). METHODS: We recruited 50 T2DM subjects comprising 31 NPDR and 19 DNR individuals. Surrogate markers of systemic oxidative stress and vascular endothelial growth factor (VEGF) were measured in plasma. Levels of miR-126 and miR-132 were determined in plasma and vitreous fluid using real-time PCR. RESULTS: We observed that levels of miR-126 and miR-132 were decreased in NPDR subjects in comparison to DNR. Plasma levels of miRs were inversely correlated with secreted levels of VEGF and oxidative stress marker. The levels of these miRs showed discriminating ability between NPDR and DNR. CONCLUSION: Circulating miRs 126 and 132 in plasma or vitreous may serve as biomarkers for early diabetic retinopathy risk prediction, provided validated in a larger cohort and other forms of retinal vasculopathy or retinopathy in the future. CI - (c) 2022 Pramanik et al. FAU - Pramanik, Subhasish AU - Pramanik S AD - Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India. FAU - Saha, Chinmay AU - Saha C AD - Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India. AD - Genome Science, School of Interdisciplinary Studies, University of Kalyani, Nadia, 741235, West Bengal, India. FAU - Chowdhury, Subhankar AU - Chowdhury S AD - Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India. FAU - Bose, Chiranjit AU - Bose C AD - Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India. FAU - Bhattacharyya, Nitai P AU - Bhattacharyya NP AD - Department of Endocrinology & Metabolism, Institute of Post Graduate Medical Education & Research and SSKM Hospital, Kolkata, 700020, West Bengal, India. FAU - Mondal, Lakshmi Kanta AU - Mondal LK AUID- ORCID: 0000-0003-0057-0778 AD - Department of Ophthalmology, Regional Institute of Ophthalmology, Medical College Campus, Kolkata, 700 073, West Bengal, India. LA - eng PT - Journal Article DEP - 20220204 PL - New Zealand TA - Diabetes Metab Syndr Obes JT - Diabetes, metabolic syndrome and obesity : targets and therapy JID - 101515585 PMC - PMC8823438 OTO - NOTNLM OT - diabetic retinopathy OT - malondialdehyde OT - microRNA-126 OT - microRNA-132 OT - oxidative stress OT - vascular endothelial growth factor COIS- The authors declare no conflicts of interest for this work. EDAT- 2022/02/15 06:00 MHDA- 2022/02/15 06:01 PMCR- 2022/02/04 CRDT- 2022/02/14 05:28 PHST- 2021/11/02 00:00 [received] PHST- 2022/01/24 00:00 [accepted] PHST- 2022/02/14 05:28 [entrez] PHST- 2022/02/15 06:00 [pubmed] PHST- 2022/02/15 06:01 [medline] PHST- 2022/02/04 00:00 [pmc-release] AID - 346097 [pii] AID - 10.2147/DMSO.S346097 [doi] PST - epublish SO - Diabetes Metab Syndr Obes. 2022 Feb 4;15:345-358. doi: 10.2147/DMSO.S346097. eCollection 2022.