Abstract
Long-term exposure to organophosphates might result in neurodegenerative diseases, comprising Parkinson’s disease. Malathion is an organophosphate pesticide with high neurotoxicity. Oxidative stress, apoptosis, and α-synuclein accumulation are important underlying mechanisms in Parkinson’s disease. According to studies, crocin, an active constituent of saffron, has anti-apoptotic, anti-inflammatory, and antioxidant properties. Thus, the effect of crocin on malathion-induced striatal biochemical deficits in rats was investigated in this study. Six groups of male Wistar rats were used: 1. control (normal saline); 2. malathion (100 mg/kg/day, i.p.); 3. crocin (10 mg/kg/day, i.p.) + malathion; 4. levodopa (10 mg/kg/day, i.p.) + malathion; 5. crocin (40 mg/kg/day, i.p.); and 6. polyethylene glycol (PEG) (vehicle of levodopa) groups. The drugs were administered for 28 days. The amounts of Bcl-2, Bax, and caspases 3, 8, and 9 proteins in the striatum were measured by western blotting. Also, the amounts of protein and mRNA level of the α-synuclein in striatum tissue were measured by western blotting and RT-qPCR methods. Malathion induced apoptosis by increasing the amount of Bax/Bcl2 ratio and caspases 3 and 9 proteins in rat striatum tissue. It also increased the protein and mRNA level of α-synuclein in striatal tissue. Co-administration of crocin or levodopa with malathion inhibited the toxic effects of malathion on striatal tissue. Crocin ameliorates the neurotoxic effect of malathion by its anti-apoptotic activity and regulating the expression of proteins involved in Parkinson’s disease pathogenesis. As a result, crocin has the potential to be used as a treatment for malathion-induced neurotoxicity.
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The data that support the findings of this study are available from the corresponding author upon reasonable request.
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This research was supported by the Pharmaceutical Research Center and Vice-Chancellor of Research, Mashhad University of Medical Sciences (No: 931316).
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HH and BMR were supervisors, designed the work, revised it critically for important intellectual content, and approved the version to be published. LM did the experiment and MGR wrote the manuscript.
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Mohammadzadeh, L., Ghasemzadeh Rahbardar, M., Razavi, B. et al. Crocin Protects Malathion-Induced Striatal Biochemical Deficits by Inhibiting Apoptosis and Increasing α-Synuclein in Rats’ Striatum. J Mol Neurosci 72, 983–993 (2022). https://doi.org/10.1007/s12031-022-01990-3
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DOI: https://doi.org/10.1007/s12031-022-01990-3