Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC Center of Advanced Study, Panjab University, Chandigarh 160 014, India.
Neuroscience. 2013 Aug 6;244:147-58. doi: 10.1016/j.neuroscience.2013.03.042. Epub 2013 Apr 9.
Chronic alcohol intake is known to induce the selective neuronal damage associated with increase oxidative-nitrosative stress and activation of inflammatory cascade finally resulting in cognitive deficits. In the present study, we investigated the protective effect of curcumin, a potent natural anti-oxidant and anti-inflammatory molecule against chronic alcohol-induced cognitive dysfunction and nuclear factor kappa beta (NF-κβ) mediated inflammatory signaling in the brain of rats chronically administered ethanol. Male Wistar rats were given ethanol (10 g/kg; oral gavage) for 10 weeks, and treated with curcumin (15, 30 and 60 mg/kg) for the same duration. Ethanol-exposed rats showed impaired spatial navigation in the Morris water maze test and poor retention in the elevated plus maze task which was coupled with enhanced acetylcholinesterase activity, increased oxidative-nitrosative stress, cytokines (tumor necrosis factor alpha (TNF-α) and interleukin-1 beta (IL-1β)), NF-kβ and caspase-3 levels in different brain regions (cerebral cortex and hippocampus) of ethanol-treated rats. Co-administration with curcumin significantly and dose-dependently prevented all the behavioral, biochemical and molecular alterations in rats chronically administered ethanol. Thus, findings from the current study demonstrates the possible involvement of oxidative-nitrosative stress mediated cytokine release and inflammatory signaling in chronic alcohol-induced cognitive dysfunction and also suggests the effectiveness of curcumin in preventing cognitive deficits associated with chronic alcohol consumption.
慢性酒精摄入已知会导致与氧化应激和炎症级联激活相关的选择性神经元损伤,最终导致认知功能障碍。在本研究中,我们研究了姜黄素对慢性酒精诱导的认知功能障碍和核因子 kappa β(NF-κβ)介导的炎症信号的保护作用,姜黄素是一种有效的天然抗氧化剂和抗炎分子,在慢性给予乙醇的大鼠大脑中。雄性 Wistar 大鼠给予乙醇(10 g/kg;口服灌胃)10 周,并给予姜黄素(15、30 和 60 mg/kg)相同时间。暴露于乙醇的大鼠在 Morris 水迷宫测试中表现出空间导航受损,在高架十字迷宫任务中保留能力差,同时乙酰胆碱酯酶活性增强,氧化应激和一氧化氮增加,细胞因子(肿瘤坏死因子-α(TNF-α)和白细胞介素-1β(IL-1β)),NF-κβ和 caspase-3 水平在不同脑区(大脑皮层和海马体)的乙醇处理大鼠中升高。姜黄素的共同给药显着且剂量依赖性地预防了慢性给予乙醇的大鼠的所有行为,生化和分子改变。因此,目前的研究结果表明,氧化应激介导的细胞因子释放和炎症信号可能参与慢性酒精引起的认知功能障碍,并且还表明姜黄素在预防与慢性酒精消耗相关的认知缺陷方面的有效性。