ArticlePloS one2022
Elevated aqueous endothelin-1 concentrations in advanced diabetic retinopathy.
Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.
- Association between endothelin-1 and diabetic retinopathy: a systematic review and meta-analysis.Frontiers in endocrinology · 2026Pooled it
- Annexin A1 as a Key Modulator of Inflammatory, Glial, and Angiogenic Signaling Pathways in Diabetic Retinopathy.Investigative ophthalmology & visual science · 2026Article
- Increased aqueous humor levels of endothelin-1 in patients with open angle glaucoma.BMC ophthalmology · 2025Article
- High-fat diet-induced dyslipidemia drives retinal ECE-1 and ET-1 upregulation.Frontiers in endocrinology · 2025Article
- Relationship between Biochemical Pathways and Non-Coding RNAs Involved in the Progression of Diabetic Retinopathy.Journal of clinical medicine · 2024Review
- Advances and Perspectives in Relation to the Molecular Basis of Diabetic Retinopathy-A Review.Biomedicines · 2023Review
- Diabetic retinopathy as the leading cause of blindness and early predictor of cascading complications-risks and mitigation.The EPMA journal · 2023Review
Corrections and comments
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Authors and funding
5 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeEndothelin-1 (ET-1) is a potent vasoconstrictor which seems to be involved in the pathogenesis of diabetic retinopathy (DR). However, studies on intraocular ET-1 in DR have been limited. Thus, we investigated aqueous ET-1 levels in patients with DR.
methodsA total 85 subjects were included in this prospective study. Those were classified into three groups: advanced DR group included those with severe nonproliferative DR or proliferative DR, whereas early DR group included those with mild nonproliferative DR or moderative nonproliferative DR. Those who underwent cataract surgery and had no concomitant ocular disease were included in the control group. Aqueous humor levels of ET-1 were obtained before intravitreal bevacizumab injection (IVB) and after 1 month for the DR patients, and at the time of cataract surgery for the control group.
resultsAdvanced DR group included 40 eyes (47.1%), whereas early DR group did 19 eyes (22.4%), and control group (26 eyes, 30.5%). Mean aqueous ET-1 level was 10.1±4.1 pg/mL (6.0-21.0 pg/mL) in advanced DR group, 1.9±0.7 pg/mL (0.6-2.8 pg/mL) in early DR group, and 2.1±1.0 pg/mL (0.7-3.9 pg/mL) in control group (P < 0.001). Advanced DR group was further subdivided into severe nonproliferative DR (15 eyes, 12.8%) and proliferative DR (25 eyes, 34.3%). Mean aqueous ET-1 level was 10.1±4.3 pg/mL (6.0-20.1 pg/mL) in patients with severe nonproliferative DR, and 10.0±4.0 pg/mL (6.0-21.0 pg/mL) in those with proliferative DR (P = 0.928) at baseline. Mean ET-1 level at 1 month after intravitreal injection was 2.5±1.0 pg/mL (0.3-4.8 pg/mL) in patients with severe proliferative DR and 2.9±1.7 pg/mL (1.0-7.0 pg/mL) in those with proliferative DR (P = 0.443). Mean aqueous ET-1 level was significantly reduced in both groups (P < 0.001, respectively).
conclusionThe mean aqueous ET-1 level was significantly higher in the eyes with advanced DR than those with early DR and the control group. The mean aqueous ET-1 level was significantly reduced after intravitreal injections in the advanced DR group. Based on our results, future studies on the exact role of ET-1 in the pathogenesis of DR and future implication for intervention would be helpful for managing DR.
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