Abstract
Background
The BBB plays a crucial role in the development of numerous neurological diseases and is especially vulnerable to oxidative stress. Human brain microvascular endothelial cells (HBMECs), the principal constituents of the BBB, significantly contribute to its formation and preservation. Increasing evidence indicates a potential inverse correlation between the consumption of dietary flavonoids and cardiovascular risk, which could be attributed to their antioxidative properties.
Objective
To explore the impact of four prevalent and abundant flavonoids on HBMECs within a microenvironment characterized by oxidative stress.
Results
Quercetin, apigenin, and genistein notably mitigated the adverse effects of H2O2-induced dysfunctions observed in various HBMEC events, including capillary network differentiation, growth, and survival. Moreover, these compounds reversed the oxidative stress provoked by H2O2, alongside reducing oxidative damage to lipids and DNA. Conversely, myricetin failed to reverse the H2O2-induced oxidative stress and did not exhibit any protective effects on HBMEC. Intriguingly, quercetin and apigenin elevated NRF2 and NQO1 levels in HBMEC, while genistein did not have the same effect.
Conclusions
Our research offers preclinical evidence indicating that certain flavonoids exhibit antioxidant effects, effectively reducing the dysfunction induced by oxidative stress in brain endothelial cells. This underscores the beneficial impact of flavonoids on the blood–brain barrier (BBB). Additionally, our findings propose potential strategies utilizing flavonoids for the treatment of neurological diseases.
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Data availability
The datasets generated during the current study are available from the corresponding author upon reasonable request.
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Acknowledgements
This work was supported by a research grant provided by the National Natural Science Funds of China (No. 81603095). We express our gratitude to Dr. Emily Johnson for her invaluable assistance in language editing and proofreading.
Funding
This work was supported by a research grant provided by the National Natural Science Funds of China (No. 81603095).
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ZLG designed and supervised the study, QT, XQY, LZC and KJ conducted the experiments, all authors analyzed and interpreted the data, QT prepared the manuscript, ZLG approved the submission.
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Qian Tan declares that she has no conflict of interest; **aoqiong Yan declares that she has no conflict of interest; Lizhu Chen declares that she has no conflict of interest; Kun Jiang declares that he has no conflict of interest; Zhenli Guo declares that she has no conflict of interest.
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Tan, Q., Yan, X., Chen, L. et al. Dietary flavonoids protect human brain microvascular endothelial cell from oxidative stress-induced dysfunction. Mol. Cell. Toxicol. (2024). https://doi.org/10.1007/s13273-024-00461-7
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DOI: https://doi.org/10.1007/s13273-024-00461-7