Abstract
Parkinson’s disease (PD) is a common chronic neurodegenerative disease induced by the death of dopaminergic neurons. Anthocyanins are naturally found antioxidants and well-known for their preventive effects in neurodegenerative disorders. Black carrots (Daucus carota L. ssp. sativus var. atrorubens Alef.) are a rich source of anthocyanins predominantly including acylated cyanidin-based derivatives making them more stable. However, there have been no reports analysing the neuroprotective role of black carrot anthocyanins (BCA) on PD. In order to investigate the potential neuroprotective effect of BCA, human SH-SY5Y cells were treated with MPP+ (1-methyl-4-phenylpyridinium) to induce PD associated cell death and cytotoxicity. Anthocyanins were extracted from black carrots and the composition was determined by HPLC–DAD. SH-SY5Y cells were co-incubated with BCA (2.5, 5, 10, 25, 50, 100 µg/ml) and 0.5 mM MPP+ to determine the neuroprotective effect of BCA against MPP+ induced cell death and cytotoxicity. Results indicate that BCA concentrations did not have any adverse effect on cell viability. BCA revealed its cytoprotective effect, especially at higher concentrations (50, 100 µg/ml) by increasing metabolic activity and decreasing membrane damage. BCA exhibited antioxidant activity via scavenging MPP+ induced reactive oxygen species (ROS) and protecting dopaminergic neurons from ROS mediated apoptosis. These results suggest a neuroprotective effect of BCA due to its high antioxidant and antiapoptotic activity, along with the absence of cytotoxicity. The elevated stability of BCA together with potential neuroprotective effects may shed light to future studies in order to elucidate the mechanism and further neuro-therapeutic potential of BCA which is promising as a neuroprotective agent.
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We thank Cihan Altintas and Cagin Cevik for technical support.
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This work was supported by a grant from Nisantasi University Scientific Research Committee (Project No: BAP00017).
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MZ designed and performed the experiments, analyzed the results, wrote the paper, and approved the final version; AM analyzed the data, revised the manuscript and approved the final version; IK revised the manuscript and approved the final version.
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Supplementary file1 (TIF 96328 kb) Supplementary Fig. 1 HPLC chromatogram and calibration curve of cyanidin-3-O-glucoside. a HPLC chromatogram of cyanidin-3-O-glucoside standard monitored at 520 nm detection. b Calibration curve of cyanidin-3-glucoside standard.
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Zaim, M., Kara, I. & Muduroglu, A. Black carrot anthocyanins exhibit neuroprotective effects against MPP+ induced cell death and cytotoxicity via inhibition of oxidative stress mediated apoptosis. Cytotechnology 73, 827–840 (2021). https://doi.org/10.1007/s10616-021-00500-4
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DOI: https://doi.org/10.1007/s10616-021-00500-4