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Ladagu AD, Olopade FE, Chazot P, Oyagbemi AA, Ohiomokhare S, Folarin OR, Gilbert TT, Fuller M, Luong T, Adejare A, Olopade JO. Attenuation of Vanadium-Induced Neurotoxicity in Rat Hippocampal Slices (In Vitro) and Mice (In Vivo) by ZA-II-05, a Novel NMDA-Receptor Antagonist. Int J Mol Sci 2023; 24:16710. [PMID: 38069032 PMCID: PMC10706475 DOI: 10.3390/ijms242316710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/04/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
Exposure to heavy metals, such as vanadium, poses an ongoing environmental and health threat, heightening the risk of neurodegenerative disorders. While several compounds have shown promise in mitigating vanadium toxicity, their efficacy is limited. Effective strategies involve targeting specific subunits of the NMDA receptor, a glutamate receptor linked to neurodegenerative conditions. The potential neuroprotective effects of ZA-II-05, an NMDA receptor antagonist, against vanadium-induced neurotoxicity were explored in this study. Organotypic rat hippocampal slices, and live mice, were used as models to comprehensively evaluate the compound's impact. Targeted in vivo fluorescence analyses of the hippocampal slices using propidium iodide as a marker for cell death was utilized. The in vivo study involved five dams, each with eight pups, which were randomly assigned to five experimental groups (n = 8 pups). After administering treatments intraperitoneally over six months, various brain regions were assessed for neuropathologies using different immunohistochemical markers. High fluorescence intensity was observed in the hippocampal slices treated with vanadium, signifying cell death. Vanadium-exposed mice exhibited demyelination, microgliosis, and neuronal cell loss. Significantly, treatment with ZA-II-05 resulted in reduced cellular death in the rat hippocampal slices and preserved cellular integrity and morphological architecture in different anatomical regions, suggesting its potential in countering vanadium-induced neurotoxicity.
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Affiliation(s)
- Amany Digal Ladagu
- Department of Veterinary Anatomy, University of Ibadan, Ibadan 200284, Nigeria; (A.D.L.); (O.R.F.); (T.T.G.); (J.O.O.)
| | | | - Paul Chazot
- Department of Biosciences, Durham University, County Durham DH1 3LE, UK;
| | - Ademola A. Oyagbemi
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan 200284, Nigeria;
| | - Samuel Ohiomokhare
- Department of Biosciences, Durham University, County Durham DH1 3LE, UK;
| | - Oluwabusayo Racheal Folarin
- Department of Veterinary Anatomy, University of Ibadan, Ibadan 200284, Nigeria; (A.D.L.); (O.R.F.); (T.T.G.); (J.O.O.)
| | - Taidinda Tashara Gilbert
- Department of Veterinary Anatomy, University of Ibadan, Ibadan 200284, Nigeria; (A.D.L.); (O.R.F.); (T.T.G.); (J.O.O.)
| | - Madison Fuller
- Department of Neuroscience, College of Arts and Sciences, Saint Joseph’s University, Philadelphia, PA 19131, USA; (M.F.); (T.L.)
| | - Toan Luong
- Department of Neuroscience, College of Arts and Sciences, Saint Joseph’s University, Philadelphia, PA 19131, USA; (M.F.); (T.L.)
| | - Adeboye Adejare
- Department of Pharmaceutical Sciences, Philadelphia College of Pharmacy, Saint Joseph’s University, Philadelphia, PA 19131, USA;
| | - James O. Olopade
- Department of Veterinary Anatomy, University of Ibadan, Ibadan 200284, Nigeria; (A.D.L.); (O.R.F.); (T.T.G.); (J.O.O.)
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Ohiomokhare S, Olaolorun F, Ladagu A, Olopade F, Howes MJR, Okello E, Olopade J, Chazot PL. The Pathopharmacological Interplay between Vanadium and Iron in Parkinson's Disease Models. Int J Mol Sci 2020; 21:E6719. [PMID: 32937783 PMCID: PMC7554808 DOI: 10.3390/ijms21186719] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/05/2020] [Accepted: 09/08/2020] [Indexed: 11/16/2022] Open
Abstract
Parkinson's disease (PD) pathology is characterised by distinct types of cellular defects, notably associated with oxidative damage and mitochondria dysfunction, leading to the selective loss of dopaminergic neurons in the brain's substantia nigra pars compacta (SNpc). Exposure to some environmental toxicants and heavy metals has been associated with PD pathogenesis. Raised iron levels have also been consistently observed in the nigrostriatal pathway of PD cases. This study explored, for the first time, the effects of an exogenous environmental heavy metal (vanadium) and its interaction with iron, focusing on the subtoxic effects of these metals on PD-like oxidative stress phenotypes in Catecholaminergic a-differentiated (CAD) cells and PTEN-induced kinase 1 (PINK-1)B9Drosophila melanogaster models of PD. We found that undifferentiated CAD cells were more susceptible to vanadium exposure than differentiated cells, and this susceptibility was modulated by iron. In PINK-1 flies, the exposure to chronic low doses of vanadium exacerbated the existing motor deficits, reduced survival, and increased the production of reactive oxygen species (ROS). Both Aloysia citrodora Paláu, a natural iron chelator, and Deferoxamine Mesylate (DFO), a synthetic iron chelator, significantly protected against the PD-like phenotypes in both models. These results favour the case for iron-chelation therapy as a viable option for the symptomatic treatment of PD.
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Affiliation(s)
- Samuel Ohiomokhare
- Department of Biosciences, Durham University, County Durham DH1 3LE, UK; (S.O.); (F.O.); (A.L.)
| | - Francis Olaolorun
- Department of Biosciences, Durham University, County Durham DH1 3LE, UK; (S.O.); (F.O.); (A.L.)
- Department of Veterinary Anatomy, University of Ibadan, Ibadan 200284, Nigeria;
| | - Amany Ladagu
- Department of Biosciences, Durham University, County Durham DH1 3LE, UK; (S.O.); (F.O.); (A.L.)
- Department of Veterinary Anatomy, University of Ibadan, Ibadan 200284, Nigeria;
| | - Funmilayo Olopade
- Department of Anatomy, College of Medicine, University of Ibadan, Ibadan 200284, Nigeria;
| | - Melanie-Jayne R. Howes
- Natural Capital and Plant Health Department, Royal Botanic Gardens Kew, Surrey TW9 3DS, UK;
| | - Edward Okello
- Human Nutrition Research Centre, Population Health Sciences Institute, Faculty of Medical Sciences, Newcastle University, Tyne and Wear NE1 7RU, UK;
| | - James Olopade
- Department of Veterinary Anatomy, University of Ibadan, Ibadan 200284, Nigeria;
| | - Paul L. Chazot
- Department of Biosciences, Durham University, County Durham DH1 3LE, UK; (S.O.); (F.O.); (A.L.)
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