Therapeutic Efficiency of Ranibizumab and 4-Methyl Catechol on The Progression of Streptozotocin-Induced Diabetic Retinopathy in Rats: Involving Vascular Endothelial Growth Factor-A and Nerve Growth Factor | ||||
Bulletin of Pharmaceutical Sciences Assiut University | ||||
Articles in Press, Accepted Manuscript, Available Online from 22 November 2023 | ||||
Document Type: Original Article | ||||
DOI: 10.21608/bfsa.2023.244738.1956 | ||||
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Authors | ||||
Eman Elsayed 1; Amira El-Saadany 1; Walaa Elwan2; Amany Abdin1; Fleur Abd Elmonem1 | ||||
1Pharmacology Department, Faculty of Medicine, Tanta University, Tanta, Egypt | ||||
2Histology Department, Faculty of Medicine, Tanta University, Egypt | ||||
Abstract | ||||
Purpose: Diabetic retinopathy (DR) is a chronic microvascular diabetic complication leading to visual loss. Ranibizumab (RBZ) is a monoclonal antibody inhibiting VEGF-A, approved for DR treatment. 4-Methyl catechol (4MC) is a potent NGF stimulant & possesses a neuroprotective effect in neuronal diseases. The aim of this study was to evaluate the role of 4MC in comparison to RBZ in the progression of streptozotocin (STZ) induced-diabetic retinopathy in albino rats. Methods: This experiment was performed on 40 albino rats divided equally into: (normal control, untreated DR, RBZ treated intravitreally & 4MC treated intravitreally). Results: The untreated DR group revealed a significant elevation of fasting serum glucose, VEGF-A, histopathological score & IHC score of Tie-2, and a significant decrease in NGF, and IHC of Bcl-2 versus the normal control group. Treatment with either RBZ or 4MC produced significant improvement in the forementioned parameters when compared to the untreated DR group. Conclusion: RBZ and 4MC are effective in the progression of STZ-induced DR via inhibition of VEGF-A and stimulation of NGF respectively. | ||||
Keywords | ||||
Diabetic retinopathy; Streptozotocin; Ranibizumab; 4-Methyl catechol | ||||
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