ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2019
Effect of topical administration of the microneurotrophin BNN27 in the diabetic rat retina.
Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Targeting p75NTR activity alleviates the neurotoxic effect of high glucose on iPSC-derived dopaminergic neurons.Stem cell research & therapy · 2026Article
- Role of NADPH Oxidases as Novel Therapeutic Targets for the Impaired Neurovascular Unit in the Early Stage of Diabetic Retinopathy.International journal of molecular sciences · 2026Review
- Review
- Multimodal beneficial effects of BNN27, a nerve growth factor synthetic mimetic, in the 5xFAD mouse model of Alzheimer's disease.Molecular psychiatry · 2025Article
- Molecular Findings Before Vision Loss in the Streptozotocin-Induced Rat Model of Diabetic Retinopathy.Current issues in molecular biology · 2025Review
- Investigation of the Effects of a Novel NOX2 Inhibitor, GLX7013170, against Glutamate Excitotoxicity and Diabetes Insults in the Retina.Pharmaceuticals (Basel, Switzerland) · 2024Article
- Investigating the Effects of Exogenous and Endogenous 2-Arachidonoylglycerol on Retinal CB1 Cannabinoid Receptors and Reactive Microglia in Naive and Diseased Retina.International journal of molecular sciences · 2023Article
- Microneurotrophin BNN27 Reduces Astrogliosis and Increases Density of Neurons and Implanted Neural Stem Cell-Derived Cells after Spinal Cord Injury.Biomedicines · 2023Article
- Blockade of CB1 or Activation of CB2 Cannabinoid Receptors Is Differentially Efficacious in the Treatment of the Early Pathological Events in Streptozotocin-Induced Diabetic Rats.International journal of molecular sciences · 2022Article
- Antioxidant Effects of DPP-4 Inhibitors in Early Stages of Experimental Diabetic Retinopathy.Antioxidants (Basel, Switzerland) · 2022Article
- The Pathogenesis and Therapeutic Approaches of Diabetic Neuropathy in the Retina.International journal of molecular sciences · 2021Review
- Quantification of BNN27, a novel neuroprotective 17-spiroepoxy dehydroepiandrosterone derivative in the blood and retina of rodents, after single intraperitoneal administration.Pharmacology research & perspectives · 2021Article
- Genotypic variability in radial resistance to water flow in olive roots and its response to temperature variations.Tree physiology · 2020Article
- Recent Developments in Diabetic Retinal Neurodegeneration: A Literature Review.Journal of diabetes research · 2020Review
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Authors and funding
7 authors.
Funding
Abstract
purposeDiabetic retinopathy (DR) is a complex eye disease associated with diabetes mellitus. It is characterized by three pathophysiological components, namely microangiopathy, neurodegeneration, and inflammation. We recently reported that intraperitoneal administration of BNN27, a novel neurosteroidal microneurotrophin, reversed the diabetes-induced neurodegeneration and inflammation in rats treated with streptozotocin (STZ), by activating the NGF TrkA and p75 receptors. The aim of the present study was to investigate the efficacy of BNN27 to protect retinal neurons when applied topically as eye drops in the same model.
methodsThe STZ rat model of DR was employed. BNN27 was administered as eye drops to diabetic Sprague-Dawley rats for 7 days, 4 weeks post-STZ (70 mg/kg) injection. Immunohistochemistry and western blot analyses were employed to examine the viability of retinal neurons in control, diabetic, and diabetic-treated animals and the involvement of the TrkA receptor and its downstream signaling ERK1/2 kinases, respectively.
resultsBNN27 reversed the STZ-induced attenuation of the immunoreactive brain nitric oxide synthetase (bNOS)- and tyrosine hydroxylase (TH)-expressing amacrine cells and neurofilament (NFL)-expressing ganglion cell axons in a dose-dependent manner. In addition, BNN27 activated/phosphorylated the TrkA receptor and its downstream prosurvival signaling pathway, ERK1/2 kinases.
conclusionsThe results of this study provide solid evidence regarding the efficacy of BNN27 as a neuroprotectant to the diabetic retina when administered topically, and suggest that its pharmacodynamic and pharmacokinetic profiles render it a putative therapeutic for diabetic retinopathy.
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Registered trials
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