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Curcumin targets vascular endothelial growth factor via activating the PI3K/Akt signaling pathway and improves brain hypoxic-ischemic injury in neonatal rats

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机构: [1]Second Hosp Baoding, Dept Otolaryngol Head & Neck Surg, Baoding 071000, Peoples R China [2]Hebei Univ, Affiliated Hosp, Dept Radiol, Baoding 071000, Peoples R China [3]Hebei Univ, Affiliated Hosp, Dept Obstet, Baoding 071000, Peoples R China [4]Qingyuan Dist Peoples Hosp, Dept MR Room, Baoding 071000, Peoples R China
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关键词: Brain Curcumin Hypoxic-ischemic PI3K/Akt signaling pathway Vascular endothelial growth factor

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This study aimed to evaluate the effect of curcumin on brain hypoxicischemic (HI) damage in neonatal rats and whether the phosphoinositide 3-kinase (PI3K)/Akt/vascular endothelial growth factor (VEGF) signaling pathway is involved. Brain HI damage models were established in neonatal rats, which received the following treatments: curcumin by intraperitoneal injection before injury, insulin-like growth factor 1 (IGF-1) by subcutaneous injection after injury, and VEGF by intracerebroventricular injection after injury. This was followed by neurological evaluation, hemodynamic measurements, histopathological assessment, TUNEL assay, flow cytometry, and western blotting to assess the expression of p-PI3K, PI3K, p-Akt, Akt, and VEGF. Compared with rats that underwent sham operation, rats with brain HI damage showed remarkably increased neurological deficits, reduced right blood flow volume, elevated blood viscosity and haematocrit, and aggravated cell damage and apoptosis; these injuries were significantly improved by curcumin pretreatment. Meanwhile, brain HI damage induced the overexpression of p-PI3K, p-Akt, and VEGF, while curcumin pretreatment inhibited the expression of these proteins. In addition, IGF-1 treatment rescued the curcumin-induced down-regulated expression of pP13K, p-Akt, and VEGF, and VEGF overexpression counteracted the inhibitory effect of curcumin on brain HI damage. Overall, pretreatment with curcumin protected against brain HI damage by targeting VEGF via the PI3K/Akt signaling pathway in neonatal rats.

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出版当年[2021]版:
大类 | 4 区 医学
小类 | 4 区 药学 4 区 生理学
最新[2025]版:
大类 | 4 区 医学
小类 | 4 区 药学 4 区 生理学
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出版当年[2020]版:
Q4 PHARMACOLOGY & PHARMACY Q4 PHYSIOLOGY
最新[2023]版:
Q3 PHARMACOLOGY & PHARMACY Q4 PHYSIOLOGY

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第一作者机构: [1]Second Hosp Baoding, Dept Otolaryngol Head & Neck Surg, Baoding 071000, Peoples R China
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