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Long-term administration of resveratrol at low doses improves neurocognitive performance as well as cerebral blood flow and modulates the inflammatory pathways in the brain
The Journal of Nutritional Biochemistry ( IF 5.6 ) Pub Date : 2021-06-01 , DOI: 10.1016/j.jnutbio.2021.108786
Philippe Garrigue 1 , Lourdes Mounien 2 , Serge Champion 3 , Yassin Mouhajir 2 , Laurent Pechere 4 , Benjamin Guillet 1 , Jean-Francois Landrier 2 , Eric Seree 2
Affiliation  

There is an increasing prevalence of coincident cerebrovascular deficiency and cognitive dysfunction with aging. Increased oxidative stress as well as inflammation that occurs with aging are associated with the impairment of cerebral vascularization. Interestingly, Resveratrol (RSV), a natural phytoalexin, is known to be a strong antioxidant and possesses anti-inflammatory properties. Collectively, these observations strongly suggest that RSV could protect against cerebral vascularization defect and then improves the decline cognitive function associated with aging. In order to test this hypothesis, we investigated the effect of a long-term RSV treatment (1.25 mg/day for 5 months) on cognitive performances of animals that we have allowed to age normally. Then, we further analyzed the gene expression profile and the cerebral blood flow in the brain. By means of novel object recognition (NOR) test, we observed that RSV enhanced NOR performances of aged rats. In addition, RSV enhanced cerebral blood flow during NOR task in aged rats. Using microarrays experiments, we also showed that several pathways related to inflammation and oxidative stress (Eicosanoid signaling, MIF-mediated innate immunity, NF-kB signaling, TNFR2 signaling, IL6 signaling, Production of nitric oxide and ROS) were down-regulated in the brain of RSV treatments rats compared to control rats. In conclusion, these results support that a long-term treatment with RSV improves cognitive performance in the elderly male rat model. This effect is associated with an increase in cerebral blood flow and a decrease in the expression of several pro-inflammatory pathways in the brain.



中文翻译:

长期服用低剂量白藜芦醇可改善神经认知能力和脑血流量,并调节大脑中的炎症通路

随着年龄的增长,同时发生的脑血管缺陷和认知功能障碍的患病率越来越高。氧化应激增加以及随着衰老而发生的炎症与脑血管化受损有关。有趣的是,白藜芦醇 (RSV) 是一种天然植物抗毒素,已知是一种强抗氧化剂并具有抗炎特性。总的来说,这些观察结果强烈表明 RSV 可以防止脑血管化缺陷,然后改善与衰老相关的认知功能下降。为了验证这一假设,我们研究了长期 RSV 治疗(1.25 毫克/天,持续 5 个月)对我们允许正常衰老的动物的认知能力的影响。然后,我们进一步分析了基因表达谱和大脑中的脑血流量。通过新物体识别 (NOR) 测试,我们观察到 RSV 增强了老年大鼠的 NOR 性能。此外,RSV 增强了老年大鼠在 NOR 任务期间的脑血流量。使用微阵列实验,我们还表明与炎症和氧化应激相关的几种途径(类花生酸信号传导、MIF 介导的先天免疫、NF-kB 信号传导、TNFR2 信号传导、IL6 信号传导、一氧化氮和 ROS 的产生)在与对照大鼠相比,RSV 治疗大鼠的大脑。总之,这些结果支持 RSV 的长期治疗可改善老年雄性大鼠模型的认知能力。这种作用与脑血流量的增加和脑中几种促炎通路表达的减少有关。我们观察到 RSV 增强了老年大鼠的 NOR 性能。此外,RSV 增强了老年大鼠在 NOR 任务期间的脑血流量。使用微阵列实验,我们还表明与炎症和氧化应激相关的几种途径(类花生酸信号传导、MIF 介导的先天免疫、NF-kB 信号传导、TNFR2 信号传导、IL6 信号传导、一氧化氮和 ROS 的产生)在与对照大鼠相比,RSV 治疗大鼠的大脑。总之,这些结果支持 RSV 的长期治疗可改善老年雄性大鼠模型的认知能力。这种作用与脑血流量的增加和脑中几种促炎通路表达的减少有关。我们观察到 RSV 增强了老年大鼠的 NOR 性能。此外,RSV 增强了老年大鼠在 NOR 任务期间的脑血流量。使用微阵列实验,我们还表明与炎症和氧化应激相关的几种途径(类花生酸信号传导、MIF 介导的先天免疫、NF-kB 信号传导、TNFR2 信号传导、IL6 信号传导、一氧化氮和 ROS 的产生)在与对照大鼠相比,RSV 治疗大鼠的大脑。总之,这些结果支持 RSV 的长期治疗可改善老年雄性大鼠模型的认知能力。这种作用与脑血流量的增加和脑中几种促炎通路表达的减少有关。RSV 增强老年大鼠 NOR 任务期间的脑血流量。使用微阵列实验,我们还表明与炎症和氧化应激相关的几种途径(类花生酸信号传导、MIF 介导的先天免疫、NF-kB 信号传导、TNFR2 信号传导、IL6 信号传导、一氧化氮和 ROS 的产生)在与对照大鼠相比,RSV 治疗大鼠的大脑。总之,这些结果支持 RSV 的长期治疗可改善老年雄性大鼠模型的认知能力。这种作用与脑血流量的增加和脑中几种促炎通路表达的减少有关。RSV 增强老年大鼠 NOR 任务期间的脑血流量。使用微阵列实验,我们还表明与炎症和氧化应激相关的几种途径(类花生酸信号传导、MIF 介导的先天免疫、NF-kB 信号传导、TNFR2 信号传导、IL6 信号传导、一氧化氮和 ROS 的产生)在与对照大鼠相比,RSV 治疗大鼠的大脑。总之,这些结果支持 RSV 的长期治疗可改善老年雄性大鼠模型的认知能力。这种作用与脑血流量的增加和脑中几种促炎通路表达的减少有关。与对照大鼠相比,MIF 介导的先天免疫、NF-kB 信号传导、TNFR2 信号传导、IL6 信号传导、一氧化氮和 ROS 的产生在 RSV 治疗大鼠的大脑中被下调。总之,这些结果支持 RSV 的长期治疗可改善老年雄性大鼠模型的认知能力。这种作用与脑血流量的增加和脑中几种促炎通路表达的减少有关。与对照大鼠相比,MIF 介导的先天免疫、NF-kB 信号传导、TNFR2 信号传导、IL6 信号传导、一氧化氮和 ROS 的产生在 RSV 治疗大鼠的大脑中被下调。总之,这些结果支持 RSV 的长期治疗可改善老年雄性大鼠模型的认知能力。这种作用与脑血流量的增加和脑中几种促炎通路表达的减少有关。

更新日期:2021-07-06
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