PMID- 32298369 OWN - NLM STAT- MEDLINE DCOM- 20200727 LR - 20200727 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 15 IP - 4 DP - 2020 TI - The spatial relation of diabetic retinal neurodegeneration with diabetic retinopathy. PG - e0231552 LID - 10.1371/journal.pone.0231552 [doi] LID - e0231552 AB - PURPOSE: Diabetic retinal neurodegeneration (DRN) has been demonstrated in eyes of patients with diabetes mellitus (DM), even in the absence of diabetic retinopathy (DR). However, no studies have looked at the rate of change in retinal layers and presence/development of DR over time per quadrant of the macula. In this longitudinal study, we aimed to clarify whether the rate of DRN is associated with the development/presence of DR within 4 different quadrants of the retina. METHODS: 80 eyes of 40 patients with type 1 DM and no/minimal DR were included. At 4 visits over 6 years, SD-OCT and fundus images were acquired. Thickness of the Retinal Nerve Fiber Layer (RNFL), Ganglion Cell Layer (GCL) and Inner Plexiform Layer (IPL) was measured in a 1-6mm circle around the fovea overall and for each quadrant (superior, nasal, inferior, temporal). Fundus images were scored for the presence/absence of DR in these areas. Multilevel analyses were performed to determine the rate of change for each layer overall and per quadrant for eyes/quadrants without and with DR during the follow-up period. RESULTS: RNFL and GCL showed significant thinning over time, IPL significant thickening. These changes were more pronounced for GCL and IPL in eyes/quadrants with DR during the follow-up period. CONCLUSIONS: RNFL and GCL both showed thinning over time, which was more pronounced in eyes with DR for GCL. This holds true even in regional parts of the retina, as quadrant analyses showed similar results, showing that structural DRN is associated with DR per quadrant independently. FAU - van de Kreeke, Jacoba A AU - van de Kreeke JA AUID- ORCID: 0000-0002-0165-1839 AD - Department of Ophthalmology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands. FAU - Darma, Stanley AU - Darma S AD - Department of Ophthalmology, Amsterdam UMC, Location AMC, Amsterdam, The Netherlands. FAU - Chan Pin Yin, Jill M P L AU - Chan Pin Yin JMPL AUID- ORCID: 0000-0002-3068-0946 AD - Department of Ophthalmology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands. FAU - Tan, H Stevie AU - Tan HS AD - Department of Ophthalmology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands. AD - Department of Ophthalmology, Amsterdam UMC, Location AMC, Amsterdam, The Netherlands. FAU - Abramoff, Michael D AU - Abramoff MD AD - Department of Ophthalmology and Visual Sciences, University of Iowa Hospital & Clinics, Iowa City, Iowa, United States of America. AD - VA Medical Center, Iowa City, Iowa, United States of America. AD - IDx, Iowa City, Iowa, United States of America. FAU - Twisk, Jos W R AU - Twisk JWR AD - Department of Epidemiology and Biostatistics, Amsterdam UMC, location VUmc, Amsterdam, The Netherlands. FAU - Verbraak, Frank D AU - Verbraak FD AD - Department of Ophthalmology, Amsterdam UMC, Location VUmc, Amsterdam, The Netherlands. AD - Department of Ophthalmology, Amsterdam UMC, Location AMC, Amsterdam, The Netherlands. LA - eng GR - P30 EY025580/EY/NEI NIH HHS/United States GR - R01 EY018853/EY/NEI NIH HHS/United States GR - R01 EY019112/EY/NEI NIH HHS/United States GR - R01 EY017066/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20200416 PL - United States TA - PLoS One JT - PloS one JID - 101285081 SB - IM MH - Adult MH - Diabetes Mellitus, Type 1/*complications MH - Diabetic Retinopathy/etiology/*pathology MH - Female MH - Fundus Oculi MH - Humans MH - Longitudinal Studies MH - Macula Lutea/pathology MH - Male MH - Retina/*pathology MH - Retinal Degeneration/etiology/*pathology MH - Retinal Neurons/pathology MH - Tomography, Optical Coherence PMC - PMC7161968 COIS- Co-author Michael D. Abramoff is employed by the company 'IDx'. This does not alter our adherence to PLOS ONE policies on sharing data and materials. IDx did not play a role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. EDAT- 2020/04/17 06:00 MHDA- 2020/07/28 06:00 PMCR- 2020/04/16 CRDT- 2020/04/17 06:00 PHST- 2019/10/27 00:00 [received] PHST- 2020/03/25 00:00 [accepted] PHST- 2020/04/17 06:00 [entrez] PHST- 2020/04/17 06:00 [pubmed] PHST- 2020/07/28 06:00 [medline] PHST- 2020/04/16 00:00 [pmc-release] AID - PONE-D-19-29938 [pii] AID - 10.1371/journal.pone.0231552 [doi] PST - epublish SO - PLoS One. 2020 Apr 16;15(4):e0231552. doi: 10.1371/journal.pone.0231552. eCollection 2020.