ArticleAntioxidants (Basel, Switzerland)2022
Antioxidant Effects of DPP-4 Inhibitors in Early Stages of Experimental Diabetic Retinopathy.
Article in Antioxidants (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
23 citing papers in PubMed, 21 citations in OpenAlex.
- A Self-Adaptive Programming Strategy Enables Local Microenvironment Modulation and Temporal Immunomodulation for Diabetic Infected Bone Regeneration.Advanced healthcare materials · 2026Article
- Dysfunction of the Neurovascular Unit in Diabetic Retinopathy: Advances from Molecular Mechanisms to Targeted Interventions.Stem cell reviews and reports · 2026Review
- The Eye as a Window to Neurodegeneration: Oxidative Stress, Optic Nerve Vulnerability, and Retinal Biomarkers-A Scoping Review.Antioxidants (Basel, Switzerland) · 2026Review
- Neuroprotection in Early Diabetic Retinal Disease Using Eyedrop Delivery.International journal of molecular sciences · 2026Review
- Eyedrop Administration of DPP-4 Inhibitors: A New Strategy for Treating Early Stages of Diabetic Retinal Disease.International journal of molecular sciences · 2026Review
- Sitagliptin Modulates Functional and Phenotypic Properties of Human Neutrophils Under Normal- and High-Glucose Conditions In Vitro.Molecules (Basel, Switzerland) · 2026Article
- Concomitant Use of DPP-4 Inhibitors May Prevent the Development of Oxaliplatin-Induced Peripheral Neuropathy: A Retrospective Cohort Study.Clinical and translational science · 2026Article
- Pathophysiological mechanisms and clinical management of type 2 diabetes mellitus complicated with anal fistula.Frontiers in surgery · 2026Review
- Modulation of oxidative stress and metabolic burden in papillary thyroid cancer by SGLT2 and broad DPP inhibition.Frontiers in molecular biosciences · 2026Article
- Modern antidiabetic therapy by sodium-glucose cotransporter 2 inhibitors, glucagon-like peptide 1 receptor agonists, and dipeptidyl peptidase 4 inhibitors against cardiovascular diseases.Pharmacological reviews · 2025Review
- PRDX4 mitigates diabetic retinopathy by inhibiting reactive gliosis, apoptosis, ER stress, oxidative stress, and mitochondrial dysfunction in Müller cells.The Journal of biological chemistry · 2025Article
- Research progress on Nrf2 intervention in the treatment of diabetic retinopathy.Frontiers in endocrinology · 2025Review
- Endoplasmic Reticulum Stress Induces ROS Production and Activates NLRP3 Inflammasome Via the PERK-CHOP Signaling Pathway in Dry Eye Disease.Investigative ophthalmology & visual science · 2024Article
- Sitagliptin eye drops prevent the impairment of retinal neurovascular unit in the new Trpv2Journal of neuroinflammation · 2024Article
- Ocular and Plasma Pharmacokinetics of Sitagliptin Eye Drops: Preclinical Data.Pharmaceuticals (Basel, Switzerland) · 2024Article
- Oral Intake of Hydrogen Water Improves Retinal Blood Flow Dysregulation in Response to Flicker Stimulation and Systemic Hyperoxia in Diabetic Mice.Translational vision science & technology · 2024Article
- New Insights into the Pleiotropic Actions of Dipeptidyl Peptidase-4 Inhibitors Beyond Glycaemic Control.TouchREVIEWS in endocrinology · 2024Review
- The potential effects of newer groups of glucose lowering drugs on age-related macular degeneration.Eye (London, England) · 2024Article
- Dipeptidyl peptidase 4 inhibitors, sodium glucose cotransporter 2 inhibitors, and glucagon-like peptide 1 receptor agonists do not worsen diabetic macular edema.Journal of diabetes and its complications · 2024Article
- Novel Antidiabetic Drugs and the Risk of Diabetic Retinopathy: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.Journal of clinical medicine · 2024Review
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 1 country.
Funding
Abstract
Hyperglycemia-induced oxidative stress plays a key role in the impairment of the retinal neurovascular unit, an early event in the pathogenesis of DR. The aim of this study was to assess the antioxidant properties of topical administration (eye drops) of sitagliptin in the diabetic retina. For this purpose, db/db mice received sitagliptin or vehicle eye drops twice per day for two weeks. Age-matched db/+ mice were used as the control group. We evaluated retinal mRNA (RT-PCR) and protein levels (Western blotting and immunohistochemistry) of different components from both the antioxidant system (NRF2, CAT, GPX, GR, CuZnSOD, and MnSOD) and the prooxidant machinery (PKC and TXNIP). We also studied superoxide levels (dihydroethidium staining) and oxidative damage to DNA/RNA (8-hydroxyguanosine immunostaining) and proteins (nitrotyrosine immunostaining). Finally, NF-кB translocation and IL-1β production were assessed through Western blotting and/or immunohistochemistry. We found that sitagliptin protected against diabetes-induced oxidative stress by reducing superoxide, TXNIP, PKC, and DNA/RNA/protein oxidative damage, and it prevented the downregulation of NRF2 and antioxidant enzymes, with the exception of catalase. Sitagliptin also exerted anti-inflammatory effects, avoiding both NF-кB translocation and IL-1β production. Sitagliptin prevents the diabetes-induced imbalance between ROS production and antioxidant defenses that occurs in diabetic retinas.
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Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.