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Abstract Title:

Hesperidin improves motor disability in rat spinal cord injury through anti-inflammatory and antioxidant mechanism via Nrf-2/HO-1 pathway.

Abstract Source:

Neurosci Lett. 2020 Jan 10 ;715:134619. Epub 2019 Nov 9. PMID: 31715292

Abstract Author(s):

Seung-Dam Heo, Jeongtae Kim, Yuna Choi, Poornima Ekanayake, Meejung Ahn, Taekyun Shin

Article Affiliation:

Seung-Dam Heo

Abstract:

Spinal cord injury (SCI) is associated with inflammation with concurrent oxidative stress and glial activation. The aim of this study was to evaluate whether hesperidin, a representative flavonoid in citrus fruits, ameliorates SCI-induced motor dysfunction and neuro-pathologic degeneration in rat model. Rats received hesperidin (100 mg/kg body weight/daily, oral administration) from 7 days prior to SCI to 7 days post SCI. Behavioral test was done on rats with SCI until 6 weeks. For the study of inflammatory molecules in SCI rats with hesperidin treatment, rats were sacrificed at day 4 post SCI, and spinal cords were collected and studied histopathologically. Behavioral tests on hind-limbs of rats with SCI revealed that treatment of hesperidin in rats with SCI significantly ameliorate the hind-limb paralysis beginning at day 21 post SCI. Hesperidin treatment in rats with SCI reduced the neuropathological changes (e.g.,hemorrhage, inflammatory cell infiltration, and tissue loss) and pro-inflammatory cytokines including tumor necrotic factor-α and interleukin-1β. In addition, oxidative stress related molecules including superoxide dismutase, catalase, nuclear factor erythroid 2-related factor-2 and heme oxygenase-1 were also increased by hesperidin treatment. Furthermore, Fe, bilirubin and p38 mitogen activated protein kinase, these by-product of heme catabolism in serum and spinal cord of rats with hesperidin-treatment groups were significantly increased compared with those of vehicle-treatment group. Collectively, this study implies that hesperidin accelerates recovery of locomotor function and tissue repair of damaged spinal cord, with concurrent upregulation of heme oxygenase-1 as far as rat SCI model is concerned.

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