PMID- 34507878 OWN - NLM STAT- MEDLINE DCOM- 20220314 LR - 20221207 IS - 1873-460X (Electronic) IS - 1056-8727 (Linking) VI - 36 IP - 1 DP - 2022 Jan TI - Incidence of diabetic retinopathy in newly diagnosed subjects with type 2 diabetes mellitus over 5 years: Contribution of Beta-cell function. PG - 108028 LID - S1056-8727(21)00237-3 [pii] LID - 10.1016/j.jdiacomp.2021.108028 [doi] AB - AIMS: Identifying and modulating risk factors is essential to prevent visual impairment due to diabetic retinopathy (DR). This study examines incident DR with metabolic and hormonal factors in newly-diagnosed, treatment naive, individuals with Type2 Diabetes Mellitus (T2DM), over a 5 year period from diagnosis. METHODS: 233 T2DM subjects underwent serial DR screening using digital photography and standardised Meal Tolerance Tests at diagnosis and after 1, 2 and 5 years. Subjects (179) with no DR throughout the 5-year study period were compared with those who developed DR (54). RESULTS: Of 233 subjects, 54(23.2%) developed DR by 5 years, background DR in 50(93%) and exudative maculopathy in 4(7%) individuals. Of these subjects, 12(22%) developed DR after 1 year, 15(28%) after 2 years and 27(50%) after 5 years. At baseline, those with DR at 5 years had higher HbA(1c) (p = 0.017), higher fasting plasma glucose (PG) (p = 0.031) and postprandial PG (p = 0.009). They were associated with reduced basal beta-cell secretory function (M(0)) (p = 0.025), lower (p = 0.000) postprandial beta-cell responsiveness (M(1)) and beta-cell function (HOMA-B) (p = 0.044). CONCLUSIONS: There is an independent association between glycaemic control and beta-cell dysfunction at the time of diagnosis of T2DM, with incident DR over a follow-up period of 5 years. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Roy Chowdhury, Sharmistha AU - Roy Chowdhury S AD - Department of Diabetes and Endocrinology, Princess of Wales Hospital, Bridgend CF31 1RQ, UK. Electronic address: sharmistha.roychowdhury@wales.nhs.uk. FAU - Thomas, Rebecca L AU - Thomas RL AD - Diabetes Research Group, Swansea University, Singleton Park, Swansea SA2 8PP, UK. FAU - Dunseath, Gareth J AU - Dunseath GJ AD - Diabetes Research Group, Swansea University, Singleton Park, Swansea SA2 8PP, UK. FAU - Luzio, Stephen D AU - Luzio SD AD - Diabetes Research Group, Swansea University, Singleton Park, Swansea SA2 8PP, UK. FAU - Wong, F Susan AU - Wong FS AD - Diabetes Research Group, Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff CF14 4XN, UK. FAU - Owens, David R AU - Owens DR AD - Diabetes Research Group, Swansea University, Singleton Park, Swansea SA2 8PP, UK. LA - eng PT - Journal Article DEP - 20210830 PL - United States TA - J Diabetes Complications JT - Journal of diabetes and its complications JID - 9204583 RN - 0 (Glycated Hemoglobin A) SB - IM CIN - J Diabetes Complications. 2022 Jan;36(1):108045. PMID: 34802901 MH - *Diabetes Mellitus, Type 2/complications/epidemiology MH - *Diabetic Retinopathy/diagnosis/epidemiology/etiology MH - Glycated Hemoglobin/metabolism MH - Humans MH - Incidence MH - *Insulin-Secreting Cells/metabolism MH - Risk Factors OTO - NOTNLM OT - Diabetic retinopathy OT - Fasting and postprandial hyperglycaemia OT - Insulin sensitivity/resistance OT - Pancreatic beta-cell function EDAT- 2021/09/12 06:00 MHDA- 2022/03/15 06:00 CRDT- 2021/09/11 05:30 PHST- 2021/02/27 00:00 [received] PHST- 2021/08/15 00:00 [revised] PHST- 2021/08/17 00:00 [accepted] PHST- 2021/09/12 06:00 [pubmed] PHST- 2022/03/15 06:00 [medline] PHST- 2021/09/11 05:30 [entrez] AID - S1056-8727(21)00237-3 [pii] AID - 10.1016/j.jdiacomp.2021.108028 [doi] PST - ppublish SO - J Diabetes Complications. 2022 Jan;36(1):108028. doi: 10.1016/j.jdiacomp.2021.108028. Epub 2021 Aug 30.