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- Z Rong, R Pan, Y Xu, C Zhang, Y Cao, and D Liu.
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
- Neuroscience. 2013 Jan 1;255:292-9.
AbstractNeonatal hypoxia-ischemic encephalopathy (HIE) remains a major cause of brain damage, leading to high disability and mortality rates in neonates. In vitro studies have shown that hesperidin, a flavanone glycoside found abundantly in citrus fruits, acts as an antioxidant. Although hesperidin has been considered as a potential treatment for HIE, its effects have not been fully evaluated. In this study, the protective effect of hesperidin pretreatment against hypoxia-ischemic (HI) brain injury and possible signal pathways were investigated using in vivo and in vitro models. In vivo HI model employed unilateral carotid ligation in postnatal day 7 rat with exposure to 8% hypoxia for 2.5h, whereas in vitro model employed primary cortical neurons of neonatal rats subjected to oxygen and glucose deprivation for 2.5h. Hesperidin pretreatment significantly reduced HI-induced brain tissue loss and improved neurological outcomes as shown in 2,3,5-triphenyltetrazolium chloride monohydrate staining and foot-fault results. The neuroprotective effects of hesperidin are likely the results of preventing an increase in intracellular reactive oxygen species and lipid peroxide levels. Hesperidin treatment also activated a key survival signaling kinase, Akt, and suppressed the P-FoxO3 level. Hesperidin pretreatment protected neonatal HIE by reducing free radicals and activating phosphorylated Akt.Copyright © 2013 IBRO. Published by Elsevier Ltd. All rights reserved.
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