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Dapsone Reduced Cuprizone-Induced Demyelination Via Targeting Nrf2 and Ikb in C57bl/6 Mice Publisher



Dehpour AR1, 2 ; Khaledi E3 ; Noori T4 ; Mohammadifarani A5, 6 ; Delphi L7 ; Sureda A8, 9 ; Sobarzosanchez E10, 11 ; Shirooie S4
Authors
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Authors Affiliations
  1. 1. Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Experimental Medicine Research Center, Tehran University of medical sciences, Tehran, Iran
  3. 3. Student Research Committee, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran
  4. 4. Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
  5. 5. Medical Plant Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
  6. 6. Department of Physiology and Pharmacology, School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
  7. 7. Animal Biology Department, Faculty of Biology, College of Sciences, University of Tehran, Tehran, Iran
  8. 8. Research Group on Community Nutrition and Oxidative Stress (NUCOX), Health Research Institute of Balearic Islands (IdISBa), University of Balearic Islands, Palma de Mallorca, E-07122, Spain
  9. 9. CIBER Fisiopatologia de la Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, 28029, Spain
  10. 10. Instituto de Investigacion y Postgrado, Facultad de Ciencias de la Salud, Universidad Central de Chile, Chile
  11. 11. Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, Spain

Source: Iranian Journal of Basic Medical Sciences Published:2022


Abstract

Objective(s): Multiple Sclerosis (MS) is an inflammatory disorder wherein the myelin of nerve cells in the central nervous system is damaged. In the current study, we assessed the effect of Dapsone (DAP) on the improvement of behavioral dysfunction and preservation of myelin in the cuprizone (CPZ) induced demyelination model via targeting Nrf2 and IKB. Materials and Methods: MS was induced in C57BL/6 mice through diet supplementation of CPZ (0.2%) for 6 weeks, and DAP (12.5 mg/kg/day; IP) was administered for the last 2 weeks of treatment. Pole test and rotarod performance test, LFB and H&E staining, and Immunohistochemistry (IHC) staining of p-Nrf2 and p-IKB were performed. Furthermore, superoxide dismutase (SOD) and nitrite were measured. Results: DAP treatment prevented body loss induced by CPZ (P<0.001). Pole test showed that CPZ increased latency time to fall (P<0.0001) but the latency to reach the floor in the DAP-CPZ group was significantly shorter (P<0.0001). Rotarod performance test showed the effect of CPZ in reducing fall time in the CPZ group (P<0.0014); however, DAP significantly increased fall time (P=0.0012). In LFB staining, DAP reduced demyelination induced by CPZ. CPZ significantly decreased p-Nrf2 and elevated p-IKB levels compared with the control group (P<0.0001), but in DAP-treated groups markedly modified these changes (P<0.0001). CPZ increased the brain nitrite levels and reduced SOD activity, but in DAP-treated considerably reversed CPZ-induced changes. Conclusion: These data support the suggestion that the beneficial properties of DAP on the CPZ-induced demyelination are mediated by targeting Nrf2 and NF-kB pathways. © 2022 Mashhad University of Medical Sciences. All rights reserved.
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