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Targeting nuclear factor erythroid 2-related factor 2-regulated ferroptosis to treat nervous system diseases
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作者 Ye-Qi Huang Zheng-Wei Huang Xue-Juan Zhang 《World Journal of Clinical Cases》 SCIE 2024年第33期6655-6659,共5页
By critically examining the work,we conducted a comprehensive bibliometric analysis on the role of nuclear factor erythroid 2-related factor 2(NRF2)in nervous system diseases.We also proposed suggestions for future bi... By critically examining the work,we conducted a comprehensive bibliometric analysis on the role of nuclear factor erythroid 2-related factor 2(NRF2)in nervous system diseases.We also proposed suggestions for future bibliometric studies,including the integration of multiple websites,analytical tools,and analytical approaches,The findings presented provide compelling evidence that ferroptosis is closely associated with the therapeutic challenges of nervous system diseases.Targeted modulation of NRF2 to regulate ferroptosis holds substantial potential for effectively treating these diseases.Future NRF2-related research should not only focus on discovering new drugs but also on designing rational drug delivery systems.In particular,nanocarriers offer substantial potential for facilitating the clinical translation of NRF2 research and addressing existing issues related to NRF2-related drugs. 展开更多
关键词 BIBLIOMETRIC Nervous system diseases nuclear factor erythroid 2-related factor 2 Ferroptosis TARGET
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Emerging trends and hotspots of Nuclear factor erythroid 2-related factor 2 in nervous system diseases 被引量:1
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作者 Xue-Qin Chang Ling Xu +3 位作者 Yi-Xuan Zuo Yi-Guo Liu Jia Li Hai-Tao Chi 《World Journal of Clinical Cases》 SCIE 2023年第32期7833-7851,共19页
BACKGROUND The Nuclear factor erythroid 2-related factor 2(NRF2)transcription factor has attracted much attention in the context of neurological diseases.However,none of the studies have systematically clarified this ... BACKGROUND The Nuclear factor erythroid 2-related factor 2(NRF2)transcription factor has attracted much attention in the context of neurological diseases.However,none of the studies have systematically clarified this field's research hotspots and evolution rules.AIM To investigate the research hotspots,evolution patterns,and future research trends in this field in recent years.METHODS We conducted a comprehensive literature search in the Web of Science Core Collection database using the following methods:(((((TS=(NFE2 L2))OR TS=(Nfe2 L2 protein,mouse))OR TS=(NF-E2-Related Factor 2))OR TS=(NRF2))OR TS=(NFE2L2))OR TS=(Nuclear factor erythroid2-related factor 2)AND(((((((TS=(neurological diseases))OR TS=(neurological disorder))OR TS=(brain disorder))OR TS=(brain injury))OR TS=(central nervous system disease))OR TS=(CNS disease))OR TS=(central nervous system disorder))OR TS=(CNS disorder)AND Language=English from 2010 to 2022.There are just two forms of literature available:Articles and reviews.Data were processed with the software Cite-Space(version 6.1.R6).RESULTS We analyzed 1884 articles from 200 schools in 72 countries/regions.Since 2015,the number of publications in this field has increased rapidly.China has the largest number of publications,but the articles published in the United States have better centrality and H-index.Among the top ten authors with the most published papers,five of them are from China,and the author with the most published papers is Wang Handong.The institution with the most articles was Nanjing University.To their credit,three of the top 10 most cited articles were written by Chinese scholars.The keyword co-occurrence map showed that"oxidative stress","NRF2","activation","expression"and"brain"were the five most frequently used keywords.CONCLUSION Research on the role of NRF2 in neurological diseases continues unabated.Researchers in developed countries published more influential papers,while Chinese scholars provided the largest number of articles.There have been numerous studies on the mechanism of NRF2 transcription factor in neurological diseases.NRF2 is also emerging as a potentially effective target for the treatment of neurological diseases.However,despite decades of research,our knowledge of NRF2 transcription factor in nervous system diseases is still limited.Further studies are needed in the future. 展开更多
关键词 nuclear factor erythroid 2-related factor 2 Nervous system diseases BRAIN Expression ACTIVATION Ferroptosis
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Evaluation of combined detection of nuclear factor erythroid 2-related factor 2 and glutathione peroxidase 4 in primary hepatic carcinoma and preliminary exploration of pathogenesis
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作者 JIE DUAN AIDONG GU +5 位作者 WEI CHEN CHANGHAO CHEN FANGNAN SONG FAXI CHEN FANGFANG JIANG HUIWEN XING 《BIOCELL》 SCIE 2023年第12期2609-2615,共7页
This study aims to analyze the clinical significance and mechanism of nuclear factor erythroid 2-related factor 2(NRF2)and glutathione peroxidase 4(GPX4)in primary hepatic carcinoma(PHC).Methods:The expression of NRF2... This study aims to analyze the clinical significance and mechanism of nuclear factor erythroid 2-related factor 2(NRF2)and glutathione peroxidase 4(GPX4)in primary hepatic carcinoma(PHC).Methods:The expression of NRF2 and GPX4 in peripheral blood of patients with PHC was determined to analyze the diagnostic value of the two combined for PHC.The prognostic significance of NRF2 and GPX4 was evaluated by 3-year followup.Human liver epithelial cells THLE-2 and human hepatocellular carcinoma cells HepG2 were purchased,and the expression of NRF2 and GPX4 in the cells was determined.NRF2 and GPX4 aberrant expression vectors were constructed and transfected into HepG2,and changes in cell proliferation and invasion capabilities were observed.Results:The expression of NRF2 and GPX4 in patients with PHC was higher than that in patients with LC or VH(p<0.05),and the two indicators combined was excellent in diagnosing PHC.Moreover,patients with high expression of NRF2 and GPX4 had a higher risk of death(p<0.05).In in vitro experiments,both NRF2 and GPX4 expression was elevated in HepG2(p<0.05).HepG2 activity was enhanced by increasing the expression of the two,vice versa(p<0.05).Conclusion:NRF2 and GPX4 combined is excellent in diagnosing PHC,and promotes the malignant development of PHC. 展开更多
关键词 nuclear factor erythroid 2 Related factor 2 Glutathione peroxidase 4 Primary hepatic carcinoma Clinical significance Mechanism of action PATHOGENESIS
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Neuroprotective effects of salidroside on focal cerebral ischemia/reperfusion injury involve the nuclear erythroid 2-related factor 2 pathway 被引量:26
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作者 Jing Han Qing Xiao +4 位作者 Yan-hua Lin Zhen-zhu Zheng Zhao-dong He Juan Hu Li-dian Chen 《Neural Regeneration Research》 SCIE CAS CSCD 2015年第12期1989-1996,共8页
Salidroside,the main active ingredient extracted from Rhodiola crenulata,has been shown to be neuroprotective in ischemic cerebral injury,but the underlying mechanism for this neuroprotection is poorly understood.In t... Salidroside,the main active ingredient extracted from Rhodiola crenulata,has been shown to be neuroprotective in ischemic cerebral injury,but the underlying mechanism for this neuroprotection is poorly understood.In the current study,the neuroprotective effect of salidroside on cerebral ischemia-induced oxidative stress and the role of the nuclear factor erythroid 2-related factor 2(Nrf2)pathway was investigated in a rat model of middle cerebral artery occlusion.Salidroside(30 mg/kg)reduced infarct size,improved neurological function and histological changes,increased activity of superoxide dismutase and glutathione-S-transferase,and reduced malon-dialdehyde levels after cerebral ischemia and reperfusion.Furthermore,salidroside apparently increased Nrf2 and heme oxygenase-1 expression.These results suggest that salidroside exerts its neuroprotective effect against cerebral ischemia through anti-oxidant mechanisms and that activation of the Nrf2 pathway is involved.The Nrf2/antioxidant response element pathway may become a new therapeutic target for the treatment of ischemic stroke. 展开更多
关键词 nerve regeneration traditional Chinese medicine SALIDROSIDE cerebral ischemia andreperfusion nuclear factor erythroid 2-related factor 2 heme oxygenase-1 middle cerebral arteryocclusion model superoxide dismutase NEUROPROTECTION neural regeneration
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Interplay between nuclear factor erythroid 2-related factor 2 and inflammatory mediators in COVID-19-related liver injury 被引量:2
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作者 Dan-Dan Zhu Xue-Mei Tan +9 位作者 Li-Qing Lu Si-Jia Yu Ru-Li Jian Xin-Fang Liang Yi-Xuan Liao Wei Fan LucíiaBarbier-Torres Austin Yang He-Ping Yang Ting Liu 《World Journal of Gastroenterology》 SCIE CAS 2021年第22期2944-2962,共19页
Coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus 2 is a global pandemic and poses a major threat to human health worldwide.In addition to respiratory symptoms,COVID-19 is usual... Coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus 2 is a global pandemic and poses a major threat to human health worldwide.In addition to respiratory symptoms,COVID-19 is usually accompanied by systemic inflammation and liver damage in moderate and severe cases.Nuclear factor erythroid 2-related factor 2(NRF2)is a transcription factor that regulates the expression of antioxidant proteins,participating in COVID-19-mediated inflammation and liver injury.Here,we show the novel reciprocal regulation between NRF2 and inflammatory mediators associated with COVID-19-related liver injury.Additionally,we describe some mechanisms and treatment strategies. 展开更多
关键词 COVID-19-related liver injury nuclear factor erythroid 2-related factor 2 Inflammatory mediator Oxidative stress Therapeutic targets
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Nuclear factor erythroid 2-related factor 2-mediated signaling and metabolic associated fatty liver disease 被引量:2
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作者 Vidyasagar Naik Bukke Archana Moola +2 位作者 Gaetano Serviddio Gianluigi Vendemiale Francesco Bellanti 《World Journal of Gastroenterology》 SCIE CAS 2022年第48期6909-6921,共13页
Oxidative stress is a key driver in the development and progression of several diseases,including metabolic associated fatty liver disease(MAFLD).This condition includes a wide spectrum of pathological injuries,extend... Oxidative stress is a key driver in the development and progression of several diseases,including metabolic associated fatty liver disease(MAFLD).This condition includes a wide spectrum of pathological injuries,extending from simple steatosis to inflammation,fibrosis,cirrhosis,and hepatocellular carcinoma.Excessive buildup of lipids in the liver is strictly related to oxidative stress in MAFLD,progressing to liver fibrosis and cirrhosis.The nuclear factor erythroid 2-related factor 2(NRF2)is a master regulator of redox homeostasis.NRF2 plays an important role for cellular protection by inducing the expression of genes related to antioxidant,anti-inflammatory,and cytoprotective response.Consistent evidence demonstrates that NRF2 is involved in every step of MAFLD development,from simple steatosis to inflammation,advanced fibrosis,and initiation/progression of hepatocellular carcinoma.NRF2 activators regulate lipid metabolism and oxidative stress alleviating the fatty liver disease by inducing the expression of cytoprotective genes.Thus,modulating NRF2 activation is crucial not only in understanding specific mechanisms underlying MAFLD progression but also to characterize effective therapeutic strategies.This review outlined the current knowledge on the effects of NRF2 pathway,modulators,and mechanisms involved in the therapeutic implications of liver steatosis,inflammation,and fibrosis in MAFLD. 展开更多
关键词 Nonalcoholic fatty liver disease Metabolic-associated fatty liver disease nuclear factor erythroid 2-related factor 2 Oxidative stress ANTIOXIDANTS Liver injury
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Keap1-nuclear factor rythroid 2-related factor 2 inhibitor NXPZ ameliorates Aβ1-42-induced cognitive dysfunction in mice
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作者 SUN Yi CHEN Yu-fei +1 位作者 SHANG Hao HE Ling 《中国药理学与毒理学杂志》 CAS CSCD 北大核心 2018年第9期692-693,共2页
OBJECTIVE Nuclear factor erythroid 2-related factor 2(Nrf2) is found to be ubiquitiously expressed in many tissues,and works as the key regulator against oxidative stress damage in cells and organs,which makes Nrf2 a ... OBJECTIVE Nuclear factor erythroid 2-related factor 2(Nrf2) is found to be ubiquitiously expressed in many tissues,and works as the key regulator against oxidative stress damage in cells and organs,which makes Nrf2 a widely concerned drug target.Recent research has identified that Nrf2 is involved in the pathology of Alzheimer disease(AD),whereas the mechanism is unknown.The purpose of this study is to figure out the role of Nrf2 in the pathologic process of AD through Nrf2-Keap1-ARE pathway and the effects of Keap1-Nrf2 inhibitor in AD mice models.METHODS Amyloid β^(1-42)(Aβ^(1-42))was injected into the bilateral hippocampus to induce the cognitive dysfunction in eight-week old male mice.The mice were treated with Keap1-Nrf2 inhibitor NXPZ of three doses as well as donepezil as a positive control by intragastric administration one time a day for one week.Several behavior tests were used to analyze the mice learning and memory ability.Additionally,we detected Nrf2 and Aβ in the plasma in mice with ELISA kits,as well as some factors related to oxidative stress in the hippocampus and cortex.The expression levels of Nrf2,Keap1,Tau and p-Tau were measured in the murine brain tissue with Western blotting.SH-SY5 Y cells were studied as an in vitro model to further clarify the mechanism.RESULTS The treatment of NXPZ ameliorated learning and memory dysfunction in AD mice in a dose-dependent manner,and the high dose group recovered better than the positive drug group.The plasma Nrf2 level was increased in a dose-dependent manner in the treatment groups;however,the plasma Aβ was decreased.What′ s more,superoxide dismutase(SOD) and glutathione reductase(GSSH) in the hippocampus and cortex were increased in the treatment group,while the malondialdehyde(MDA) was decreased,meaning that NXPZ treatment promoted expression of the anti-oxidative factors and inhibited the expression of the oxidative factors in the down-stream.Western blotting analysis of hippocampus and cortex showed up-regulated Nrf2,decreased Keap1 and decreased p-Tau in NXPZ treatment mice.In ex vivo experiments,when SH-SY5 Y cells were treated with Aβ,Nrf2 in the cytoplasm was increased,as well as the expression Nrf2 in the nuclear was decreased.The treatment of NXPZ increased nuclear Nrf2,decreased cytoplasm Nrf2,and decreased the expression of p-Tau.CONCLUSION Nrf2 has an important role in neuron function.Nrf2 activation by selective Keap1-Nrf2 inhibitor NXPZ may contribute to improve cognitive function in AD mice.The mechanism may be related to increased generation and release of Nrf2 induced by more disaggregation with Keap1,leading to more expression of anti-oxidative molecules to protect the damage caused by Aβ.These results indicates that Nrf2 may be a novel therapeutic target of AD and Keap1-Nrf2 inhibitor may be a novel medication for protecting the loss of learning and memory ability. 展开更多
关键词 ALZHEIMER disease nuclear factorerythroid 2-related factor 2 AMYLOID β protein OXIDATIVE stress
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姜酮通过激活Nrf2/HO-1信号通路减轻OGD/R后氧化应激损伤对HT22细胞凋亡的抑制作用 被引量:2
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作者 侯玮琛 张桂美 张舒石 《吉林大学学报(医学版)》 CAS CSCD 北大核心 2024年第1期97-105,共9页
目的:探讨姜酮对氧糖剥夺/复糖复氧(OGD/R)后小鼠海马神经元HT22细胞的保护作用,阐明其相关作用机制。方法:培养HT22细胞,设置不同OGD/R时间梯度,建立OGD/R细胞损伤模型。HT22细胞分为对照组、OGD/R组、OGD/R+1μmol·L^(-1)姜酮组... 目的:探讨姜酮对氧糖剥夺/复糖复氧(OGD/R)后小鼠海马神经元HT22细胞的保护作用,阐明其相关作用机制。方法:培养HT22细胞,设置不同OGD/R时间梯度,建立OGD/R细胞损伤模型。HT22细胞分为对照组、OGD/R组、OGD/R+1μmol·L^(-1)姜酮组、OGD/R+10μmol·L^(-1)姜酮、OGD/R+100μmol·L^(-1)姜酮组和OGD/R+0.2%二甲亚枫(DMSO)组,CCK-8法检测各组细胞活性并计算各组细胞存活率,确定姜酮最适药物浓度。细胞分为对照组、OGD/R组、OGD/R+姜酮组和OGD/R+姜酮+核因子E2相关因子2(Nrf2)抑制剂(ML385)组,OGD/R+姜酮组细胞经姜酮给药处理4 h后予以OGD 8 h和复糖复氧8 h处理,OGD/R+姜酮+ML385组细胞在姜酮给药前予以10μmol·L^(-1)ML385预处理6 h,CCK-8法检测各组细胞活性,Western blotting法检测各组细胞中Nrf2、血红素加氧酶1(HO-1)、B细胞淋巴瘤2(Bcl-2)和Bcl-2相关X蛋白(Bax)蛋白表达水平,酶联免疫吸附试验(ELISA)法检测各组细胞培养上清中超氧化物歧化酶(SOD)活性和丙二醛(MDA)水平。结果:与对照组比较,HT22细胞经OGD 8 h和复糖复糖8 h处理后细胞存活率低于50%,以OGD 8 h和复糖复糖8 h建立HT22细胞OGD/R模型。与OGD/R组比较,OGD/R+不同剂量姜酮组细胞存活率均不同程度升高,其中OGD/R+100μmol·L^(-1)姜酮组细胞存活率升高最明显(P<0.01),故选用100μmol·L^(-1)姜酮用于后续实验。与对照组比较,OGD/R组细胞活性明显降低(P<0.01),细胞中Nrf2、HO-1和Bax蛋白表达水平明显升高(P<0.01),Bcl-2蛋白表达水平明显降低(P<0.05),细胞培养上清中SOD活性明显降低(P<0.01),MDA水平明显升高(P<0.01);与OGD/R组比较,OGD/R+姜酮组细胞活性明显升高(P<0.01),细胞中Nrf2、HO-1和Bcl-2蛋白表达水平明显升高(P<0.05或P<0.01),Bax蛋白表达水平明显降低(P<0.05),细胞培养上清中SOD活性明显升高(P<0.01),MDA水平明显降低(P<0.01);与OGD/R+姜酮组比较,OGD/R+姜酮+ML385组细胞活性明显降低(P<0.01),细胞中Nrf2、HO-1和Bcl-2蛋白表达水平明显降低(P<0.01),Bax蛋白表达水平明显升高(P<0.01),细胞培养上清中SOD活性明显降低(P<0.01),MDA水平明显升高(P<0.05)。结论:姜酮可通过激活Nrf2/HO-1信号通路减轻OGD/R后氧化应激损伤对HT22细胞凋亡的抑制作用。 展开更多
关键词 姜酮 糖氧剥夺 HT22神经元 核因子E2相关因子2 血红素加氧酶1 氧化应激 细胞凋亡
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Keap1/Nrf2信号通路在非小细胞肺癌氧化应激机制中的作用 被引量:1
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作者 王兰荣 曹旸 +4 位作者 张伟 刘萌萌 王晓翠 魏丽 李蕾 《海南医学》 CAS 2024年第1期10-14,共5页
目的检测非小细胞肺癌(NSCLC)组织中Kelch样环氧氯丙烷相关蛋白-1(Keap1)、核因子E2相关因子2(Nrf2)蛋白表达水平,分析其与临床病理参数、氧化应激指标的相关性,为临床治疗提供潜在靶点。方法选取2017年4月至2020年4月郑州市第三人民医... 目的检测非小细胞肺癌(NSCLC)组织中Kelch样环氧氯丙烷相关蛋白-1(Keap1)、核因子E2相关因子2(Nrf2)蛋白表达水平,分析其与临床病理参数、氧化应激指标的相关性,为临床治疗提供潜在靶点。方法选取2017年4月至2020年4月郑州市第三人民医院收治的100例NSCLC患者为研究对象,免疫组化法检测并比较癌组织、癌旁组织中Keap1、Nrf2蛋白表达水平;比较不同临床病理参数患者Keap1、Nrf2蛋白表达水平;比较不同Keap1、Nrf2蛋白表达患者血清超氧化物歧化酶(SOD)、诱导型一氧化氮合酶(iNOS)、丙二醛(MDA)水平,并采用Spearman法分析SOD、i NOS、MDA与临床病理参数的相关性,采用Pearson法分析SOD、iNOS、MDA与Keap1、Nrf2蛋白水平的的相关性;比较不同Keap1、Nrf2蛋白表达患者的生存率。结果癌组织、癌旁组织Keap1蛋白阳性率分别为77.00%、53.00%,Nrf2蛋白阳性率分别为74.00%、45.00%,Keap1蛋白OD值分别为0.41±0.07、0.33±0.05,Nrf2蛋白OD值分别为0.39±0.06、0.31±0.06,癌组织Keap1、Nrf2蛋白阳性率及OD值明显高于癌旁组织,差异均有统计学意义(P<0.05);Keap1蛋白阳性表达与病理分级、T分期呈正相关(r=0.569、0.574,P<0.01),Nrf2蛋白阳性表达与病理分级、T分期呈正相关(r=0.527、0.539,P<0.01);Keap1蛋白阳性者、阴性者的血清SOD水平分别为(86.78±9.14)U/m L、(115.07±12.13)U/m L,MDA水平分别为(4.42±0.82)mmol/L、(3.24±0.56)mmol/L,i NOS水平分别为(22.74±4.31)U/m L、(15.59±3.02)U/mL,Nrf2蛋白阳性者、阴性者血清SOD水平分别为(84.94±9.12)U/mL、(117.06±12.37)U/mL,MDA水平分别为(4.48±0.85)mmol/L、(3.21±0.52)mmol/L,iNOS水平分别为(23.02±4.28)U/mL、(15.64±3.10)U/mL,Keap1、Nrf2蛋白阳性者血清SOD水平明显低于阴性者,MDA、iNOS水平明显高于阴性者,差异均有统计学意义(P<0.05);Keap1、Nrf2蛋白表达与SOD呈负相关(r=-0.612、-0.614,P<0.01),与MDA、iNOS呈正相关(r_(Keap1)=0.609、0.614,P<0.01;r_(Nrf2)=0.610、0.608,P<0.01);Keap1、Nrf2蛋白阳性表达者3年生存率为85.71%、83.78%,明显低于阴性表达者的95.65%、100.00%,差异均有统计学意义(P<0.05)。结论NSCLC组织中Keap1、Nrf2蛋白表达水平升高,且与病理分级、T分期密切相关,该信号通路活化可参与氧化应激反应过程,且对预判患者预后具有一定临床意义。 展开更多
关键词 非小细胞肺癌 氧化应激 Kelch样环氧氯丙烷相关蛋白-1 核因子E2相关因子2 超氧化物歧化酶 诱导型一氧化氮合酶 丙二醛
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槲皮素预处理ALI大鼠肺组织损伤、炎症/氧化应激反应、铁死亡及Nrf2/HO-1信号通路激活情况观察 被引量:1
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作者 李雪 李博 +1 位作者 谈彬 马磊 《山东医药》 CAS 2024年第15期13-18,共6页
目的观察槲皮素灌胃预处理的LPS诱导急性肺损伤(ALI)大鼠肺组织损伤、炎症反应、氧化应激反应、铁死亡及Nrf2/HO-1信号通路激活情况,以探讨槲皮素对ALI的预防作用及机制。方法24只SD大鼠分为槲皮素低、中、高剂量组和阳性对照组(地塞米... 目的观察槲皮素灌胃预处理的LPS诱导急性肺损伤(ALI)大鼠肺组织损伤、炎症反应、氧化应激反应、铁死亡及Nrf2/HO-1信号通路激活情况,以探讨槲皮素对ALI的预防作用及机制。方法24只SD大鼠分为槲皮素低、中、高剂量组和阳性对照组(地塞米松)、模型组、正常对照组。槲皮素低、中、高剂量组以25、50、100 mg/kg槲皮素灌胃,1次/天,连续7 d;槲皮素灌胃处理的第4天在大鼠气管内滴注5 mg/kg LPS;阳性对照组以地塞米松1.04 mg/kg灌胃,其余处理同槲皮素组;模型组以生理盐水灌胃,1次/天,连续7天,其余处理同槲皮素组;正常对照组以生理盐水连续灌胃7 d。末次灌注给药后,观察各组肺组织损伤(肺功能及肺组织病理改变、纤维组织阳性表达率、肺泡上皮细胞凋亡率)、炎症反应(肺泡灌洗液TNF-α、IL-6、IL-1β)、氧化应激反应(肺泡灌洗液SOD、GSH、MDA,肺组织ROS)、铁死亡(Fe^(2+)水平)及Nrf2/HO-1信号通路激活[肺组织核因子红细胞2相关因子2(Nfr2)、血红素加氧酶1(HO-1)、超氧化物歧化酶2(SOD2)、过氧化氢酶(CAT)蛋白]情况。结果与正常对照组比较,模型组PaCO_(2)水平升高,PaO_(2)、SaO_(2)水平降低(P均<0.01);肺组织可见肺泡上皮细胞变性坏死,纤维组织阳性表达率高;肺泡上皮细胞凋亡率高;肺泡灌洗液中TNF-α、IL-6、IL-1β水平均升高,SOD、GSH水平降低,MDA水平升高,肺组织ROS表达水平升高,肺泡灌洗液中Fe^(2+)水平升高(P均<0.05)。与模型组相比,槲皮素中、高剂量组和阳性对照组中PaCO_(2)均降低(P均<0.05),槲皮素高剂量组PaO_(2)和SaO_(2)水平升高(P均<0.05);槲皮素高剂量组与阳性对照组肺组织炎性浸润与纤维增生明显减少,肺泡恢复正常生理结构;槲皮素低、中、高剂量组和阳性对照组肺纤维组织阳性表达率均下降(P均<0.05),其中槲皮素高剂量组肺纤维组织阳性表达率最低;槲皮素低、中、高剂量组和阳性对照组肺泡上皮细胞凋亡率均降低(P均<0.01);槲皮素低、中、高剂量组和阳性对照组肺泡灌洗液中TNF-α、IL-6、IL-1β水平均降低、SOD、GSH水平升高、MDA水平降低,肺组织ROS表达水平降低(P均<0.01),肺泡灌洗液中Fe^(2+)水平降低。与正常对照组比较,模型组肺组织中CAT、HO-1、Nrf2、SOD2蛋白表达水平低(P均<0.01);与模型组比较,槲皮素中、高剂量组和阳性对照组肺组织中CAT、HO-1、Nrf2、SOD2蛋白表达水平高(P均<0.05)。结论槲皮素灌胃预处理的ALI大鼠肺组织损伤、炎症反应、氧化应激反应、铁死亡情况减轻,Nfr2/HO-1信号通路激活;槲皮素灌胃预处理可预防LPS诱导的大鼠ALI,可能通过抑制炎症反应、氧化应激反应及铁死亡而起作用;槲皮素可能通过上调Nfr2/HO-1信号通路而抑制炎症反应、氧化应激反应及铁死亡;50、100 mg/kg槲皮素均对LPS诱导的大鼠ALI起预防作用,以100 mg/kg槲皮素的作用效果更佳。 展开更多
关键词 槲皮素 急性肺损伤 铁死亡 炎症反应 氧化应激反应 核因子红细胞2相关因子2/血红素加氧酶1信号通路
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Neferine inhibits the progression of diabetic nephropathy by modulating the miR-17-5p/nuclear factor E2-related factor 2 axis
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作者 HUANG Hongmei YANG Maojun +6 位作者 LI Ting WANG Dandan LI Ying TANG Xiaochi YUAN Lu GU Shi XU Yong 《Journal of Traditional Chinese Medicine》 SCIE CSCD 2024年第1期44-53,共10页
OBJECTIVE:To investigate the effect of Neferine(Nef)on diabetic nephropathy(DN)and to explore the mechanism of Nef in DN based on miRNA regulation theory.METHODS:A DN mouse model was constructed and treated with Nef.S... OBJECTIVE:To investigate the effect of Neferine(Nef)on diabetic nephropathy(DN)and to explore the mechanism of Nef in DN based on miRNA regulation theory.METHODS:A DN mouse model was constructed and treated with Nef.Serum creatinine(Crea),blood urea(UREA)and urinary albumin were measured in mice by kits,and renal histopathological changes and fibrosis were observed by hematoxylin-eosin staining and Masson staining.Renal tissue superoxide dismutase(SOD),malondialdehyde(MDA)and glutathione peroxidase(GSH-Px)activities were measured by enzyme-linked immunosorbent assay(ELISA).Western blotting was used to detect the expression of nuclear factor E2-related factor 2(Nrf2)/heme oxygenase 1(HO-1)signaling pathway-related proteins in kidney tissues.Quantitative reverse transcription-polymerase chain reaction(q RT-PCR)was used to detect the expression of miR-17-5p in kidney tissues.Subsequently,a DN in vitro model was constructed by high glucose culture of human mesangial cells(HMCs),cells were transfected with miR-17-5p mimic and/or treated with Nef,and we used q RTPCR to detect cellular miR-17 expression,flow cytometry to detect apoptosis,ELISAs to detect cellular SOD,MDA,and GSH-Px activities,Western blots to detect Nrf2/HO-1 signaling pathway-related protein expression,and dual luciferase reporter gene assays to verify the targeting relationship between Nrf2 and miR-17-5p.RESULTS:Administration of Nef significantly reduced the levels of blood glucose,Crea,and UREA and the expression of miR-17-5p,improved renal histopathology and fibrosis,significantly reduced MDA levels,elevated SOD and GSH-Px activities,and activated Nrf2 expression in kidney tissues from mice with DN.Nrf2 is a post-transcriptional target of miR-17-5p.In HMCs transfected with miR-17-5p mimics,the m RNA and protein levels of Nrf2 were significantly suppressed.Furthermore,miR-17-5p overexpression and Nef intervention resulted in a significant increase in high glucose-induced apoptosis and MDA levels in HMCs and a significant decrease in the protein expression of HO-1 and Nrf2.CONCLUSION:Collectively,these results indicate that Nef has an ameliorative effect on DN,and the mechanism may be through the miR-17-5p/Nrf2 pathway. 展开更多
关键词 diabetic nephropathies NEFERINE miR-17-5p NF-E2-related factor 2 oxidative stress
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常压高浓度氧对新生大鼠脑微血管内皮细胞损伤与Nrf2/HO-1信号通路的影响分析 被引量:1
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作者 张占伟 谭焱 +2 位作者 田桂湘 范瑶 王佳怡 《临床和实验医学杂志》 2024年第3期233-237,共5页
目的探究常压高浓度氧(NBO)对新生大鼠脑微血管内皮细胞损伤及核因子E2相关因子2/血红素氧合酶-1(Nrf2/HO-1)信号通路的影响。方法取新生SD大鼠45只,采用随机数字表法分为常氧组、NBO组和NBO+Nrf2激活剂组,每组各15只。常氧组大鼠置于... 目的探究常压高浓度氧(NBO)对新生大鼠脑微血管内皮细胞损伤及核因子E2相关因子2/血红素氧合酶-1(Nrf2/HO-1)信号通路的影响。方法取新生SD大鼠45只,采用随机数字表法分为常氧组、NBO组和NBO+Nrf2激活剂组,每组各15只。常氧组大鼠置于普通空气(21%氧气)中饲养,NBO组和NBO+Nrf2激活剂组大鼠置于90%常压氧气饲养,NBO+Nrf2激活剂组每日灌胃5 mg/kg Nrf2激动剂莱菔硫烷。测定脑组织伊文思蓝(EB)含量,采用酶联免疫法检测血管内皮生长因子(VEGF)和基质金属蛋白酶9(MMP-9)含量,干湿重法检测脑组织含水量,HE染色和TUNEL染色观察脑组织病理变化,蛋白质印迹法检测海马组织Nrf2/HO-1信号通路蛋白表达,水迷宫检测大鼠认知功能。结果与常氧组比较,NBO组脑组织EB、VEGF、MMP-9含量及脑组织含水量升高,差异均有统计学意义(P<0.05);与NBO组比较,NBO+Nrf2激活剂组脑组织EB、VEGF、MMP-9含量及脑组织含水量降低,差异均有统计学意义(P<0.05)。病理染色结果显示,常氧组大鼠神经细胞形态及结构完整,未见明显病理变化和细胞凋亡;NBO组神经细胞形态及结构不规则,出现明显的水肿和空泡,并伴有大量的凋亡细胞;NBO+Nrf2激活剂组脑组织病理损伤较NBO组明显减轻。与常氧组比较,NBO组脑组织Nrf2、HO-1蛋白相对表达量降低,差异均有统计学意义(P<0.05);与NBO组比较,NBO+Nrf2激活剂组Nrf2、HO-1蛋白相对表达量升高,差异均有统计学意义(P<0.05)。与常氧组比较,NBO组第2~4天逃避潜伏期延长,穿越平台次数减少,差异均有统计学意义(P<0.05);与NBO组比较,NBO+Nrf2激活剂组第2~4天逃避潜伏期缩短,穿越平台次数增多,差异均有统计学意义(P<0.05)。结论NBO可诱导新生大鼠脑微血管内皮细胞损伤,导致远期认知功能障碍,可能与下调Nrf2/HO-1信号通路表达有关。 展开更多
关键词 常压高浓度氧 新生大鼠 微血管内皮细胞损伤 血脑屏障功能 认知功能障碍 核因子E2相关因子2/血红素氧合酶-1信号通路
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岩藻黄质活化核因子E2相关因子2改善糖皮质激素诱导的成骨细胞凋亡
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作者 谢婷 刘婷婷 +3 位作者 曾雪慧 李亚敏 周庞虎 易念华 《中国组织工程研究》 CAS 北大核心 2024年第23期3609-3614,共6页
背景:骨质疏松症发病率高,易导致骨折等并发症的发生,而现有药物干预不良反应大,难以满足临床需求。目的:探索岩藻黄质对糖皮质激素诱导成骨细胞骨质疏松症模型的作用与潜在机制。方法:将原代大鼠成骨细胞接种于6孔板内,待细胞融合度达... 背景:骨质疏松症发病率高,易导致骨折等并发症的发生,而现有药物干预不良反应大,难以满足临床需求。目的:探索岩藻黄质对糖皮质激素诱导成骨细胞骨质疏松症模型的作用与潜在机制。方法:将原代大鼠成骨细胞接种于6孔板内,待细胞融合度达到80%后分4组干预:对照组单纯培养24 h,糖皮质激素组使用地塞米松干预24 h,岩藻黄质组使用岩藻黄质干预24 h,糖皮质激素+岩藻黄质组使用地塞米松与岩藻黄质同时干预24 h。干预结束后,检测细胞增殖、凋亡、细胞内活性氧含量以及凋亡相关蛋白、骨形成相关蛋白、细胞核核因子E2相关因子2的蛋白表达。结果与结论:①CCK-8检测显示,与对照组比较,糖皮质激素组细胞活性降低(P<0.05);与糖皮质激素组比较,糖皮质激素+岩藻黄质组细胞活性升高(P<0.05);②JC-1线粒体膜电位染色与流式细胞学检测显示,与对照组比较,糖皮质激素组细胞凋亡比例增加(P<0.05);与糖皮质激素组比较,糖皮质激素+岩藻黄质组细胞凋亡比例减少(P<0.05);③Western Blot检测显示,与对照组比较,糖皮质激素组BAX、裂解聚ADP核糖聚合酶的蛋白表达升高(P<0.05),BCL2、Ⅰ型胶原蛋白α1肽链、碱性磷酸酶、骨钙蛋白、RUNX2的蛋白表达降低(P<0.05);与糖皮质激素组比较,糖皮质激素+岩藻黄质组BAX、裂解聚ADP核糖聚合酶的蛋白表达降低(P<0.05),BCL2、Ⅰ型胶原蛋白α1肽链、碱性磷酸酶、骨钙蛋白、RUNX2的蛋白表达升高(P<0.05);④荧光探针检测显示,与对照组比较,糖皮质激素组活性氧含量增加(P<0.05);与糖皮质激素组比较,糖皮质激素+岩藻黄质组活性氧含量减少(P<0.05);⑤免疫荧光染色与Western Blot检测显示,与对照组比较,糖皮质激素组细胞核核因子E2相关因子2的蛋白表达降低(P<0.05);与糖皮质激素组比较,糖皮质激素+岩藻黄质组细胞核核因子E2相关因子2的蛋白表达升高(P<0.05);⑥结果表明,岩藻黄质通过活化核因子E2相关因子2改善糖皮质激素诱导的成骨细胞凋亡与骨形成相关分子表达。 展开更多
关键词 骨质疏松症 糖皮质激素 成骨细胞 细胞凋亡 岩藻黄质 活性氧 核因子E2相关因子2 核转位
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PCNA、Bcl-2及EGFR在喉癌组织中的表达及与临床病理特征、生存的关系 被引量:1
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作者 黄海平 李佳宸 《中国现代医学杂志》 CAS 2024年第2期76-82,共7页
目的探讨增殖细胞核抗原(PCNA)、B淋巴细胞瘤-2(Bcl-2)及表皮生长因子受体(EGFR)在喉癌组织中的表达及与临床病理特征、生存的关系。方法选取2017年3月—2020年1月在苏州大学附属第一医院因喉癌行手术治疗的92例患者的喉癌组织及对应癌... 目的探讨增殖细胞核抗原(PCNA)、B淋巴细胞瘤-2(Bcl-2)及表皮生长因子受体(EGFR)在喉癌组织中的表达及与临床病理特征、生存的关系。方法选取2017年3月—2020年1月在苏州大学附属第一医院因喉癌行手术治疗的92例患者的喉癌组织及对应癌旁组织标本。检测癌组织与癌旁组织PCNA mRNA、Bcl-2mRNA、EGFR mRNA相对表达量,多元线性回归分析其癌组织表达与临床病理特征的关系。随访3年,采用Kaplain-Maier曲线分析不同PCNA、Bcl-2、EGFR表达水平患者生存情况差异。结果癌组织PCNA mRNA、Bcl-2 mRNA、EGFR mRNA相对表达量高于癌旁组织(P<0.05)。不同年龄、肿瘤部位患者PCNA mRNA、Bcl-2 mRNA、EGFR mRNA相对表达量比较,差异无统计学意义(P>0.05);低分化,临床分期Ⅲ、Ⅳ期及淋巴结转移患者PCNA mRNA、Bcl-2 mRNA、EGFR mRNA相对表达量分别高于中、高分化,临床分期Ⅰ、Ⅱ期,无淋巴结转移患者(P<0.05)。多元线性回归分析结果显示,肿瘤分化程度、临床分期、淋巴结转移是喉癌组织PCNA mRNA、Bcl-2 mRNA、EGFR mRNA表达的影响因素。Kaplain-Maier曲线分析结果显示,PCNA mRNA高表达患者3年无进展生存率、总生存率分别为59.57%和70.21%,低于低表达患者的80.00%和88.89%(P<0.05);Bcl-2 mRNA高表达患者3年无进展生存率、总生存率分别为60.78%和70.59%,低于低表达患者的80.49%和90.24%(P<0.05);EGFR mRNA高表达患者3年无进展生存率、总生存率分别为59.09%和70.45%,低于低表达患者的79.17%、87.50%(P<0.05)。结论喉癌组织PCNA、Bcl-2、EGFR呈高表达,且其高表达状态与肿瘤分期高、分化程度低、淋巴结转移有关,PCNA、Bcl-2、EGFR表达水平可在一定程度上反映患者预后。 展开更多
关键词 喉癌 临床病理 生存率 增殖细胞核抗原 B淋巴细胞瘤-2 表皮生长因子受体
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丹酚酸B对2型糖尿病小鼠心肌病氧化应激的作用及机制
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作者 肖红 罗红 +3 位作者 张宇菲 陶玲 徐旖旎 沈祥春 《贵州医科大学学报》 CAS 2024年第8期1093-1109,共17页
目的探讨丹酚酸B(Sal B)对2型糖尿病小鼠心肌病(DCM)氧化应激的作用及潜在机制。方法60只C57BL/6J小鼠分为空白组(n=12,Control组,正常饲料,灌胃生理盐水)和高脂高糖(HG)组[n=48,HFG组,链脲佐菌素(STZ)联合HFG饲料构建DCM模型],造模成功... 目的探讨丹酚酸B(Sal B)对2型糖尿病小鼠心肌病(DCM)氧化应激的作用及潜在机制。方法60只C57BL/6J小鼠分为空白组(n=12,Control组,正常饲料,灌胃生理盐水)和高脂高糖(HG)组[n=48,HFG组,链脲佐菌素(STZ)联合HFG饲料构建DCM模型],造模成功的HFG组小鼠分为DCM组(灌胃生理盐水)、Sal B低剂量[1.50 mg/(kg·d)]组(Sal B.L组)、Sal B高剂量[3.00 mg/(kg·d)]组(Sal B.H组)及200 mg/(kg·d)二甲双胍治疗组(Metformin组),灌胃连续8周;麻醉各组小鼠,采用小动物超声仪检测仰卧位时各组小鼠心脏的左室射血分数(LVEF)、缩短分数(FS)、左室收缩末期容积(LVESV)及左室收缩期末期内径(LVIDs);处死各组小鼠,取心脏制作切片、苏木素-伊红(HE)和Masson染色观察心肌组织形态学特征;采用试剂盒检测各组小鼠心肌组织中细胞丙二醛(MDA)、超氧化物歧化酶(SOD)及谷胱甘肽(GSH)的水平,采用Western blot分析氧化应激蛋白Kelch样ECH关联蛋白1(Keap1)、核因子-E2相关因子2(Nrf2)、磷酸化Nrf2(pNrf2)、过氧化物酶1(PRDX1)、血红素加氧酶1(HO-1)及凋亡相关蛋白活化的半胱氨酸蛋白(Cleaved-caspase3)、B淋巴细胞瘤-2蛋白(Bcl2)、Bcl2关联X(bax)蛋白的表达;SD乳鼠心脏提取分离培养原代新生大鼠心肌细胞(PNRCMs)构建DCM体外模型,将PNRCMs分为40 mmol/L甘露醇(Mannitol)组、空白(Control)组、40 mmol/L HG(HG)组、40 mmol/L HG+25μmol/L Sal B(Sal B低剂量,Sal B.L)组、40 mmol/L HG+50μmol/L Sal B(Sal B高剂量,Sal B.H)组、40 mmol/L HG+0.25 mmol/L二甲双胍(Metformin)组,检测各组细胞的活性氧(ROS)、MDA、SOD及GSH水平,采用Western blot检测氧化应激蛋白Keap1、Nrf2、pNrf2、PRDX1、HO-1及凋亡相关蛋白Cleaved-caspase3、bax、Bcl2蛋白的表达;采用实时定量反转录聚合酶链式反应(RT-qPCR)法检测氧化应激相关基因Keap1、Nrf2、PRDX1及HO-1信使RNA(mRNA)的表达;采用Nrf2抑制剂(ML385)和激动剂(甲基巴多索隆)进一步分析氧化应激蛋白Keap1、Nrf2、pNrf2、PRDX1及HO-1的表达。结果与Control组比较,DCM组小鼠的LVEF、FS降低(P<0.01),LVESV、LVIDs升高(P<0.01),心肌组织排列紊乱、间质细胞增多并伴有炎性细胞浸润及胶原沉积,心肌组织中MDA含量增加、SOD和GSH减少(P<0.01),心肌组织中Keap1、Cleaved-caspase3及bax蛋白表达上调,Nrf2、pNrf2、PRDX1、HO-1及Bcl2蛋白表达下调(P<0.01);与Control组比较,HG组心肌细胞中ROS表达增加,SOD表达下降(P<0.05),MDA含量增加、GSH表达下降(P<0.01),心肌细胞中的Keap1、Cleaved-caspase3及bax蛋白表达增加(P<0.01),Nrf2、pNrf2、PRDX1、HO-1及Bcl2蛋白表达下降(P<0.01),心肌细胞中的Keap1 mRNA表达升高(P<0.05),Nrf2、PRDX1及HO-1 mRNA表达降低(P<0.05);与DCM组比,Sal B.L和Sal B.H组小鼠的LVEF、FS增加(P<0.01)、LVESV、LVIDs降低(P<0.01),心肌组织排列整齐、炎性细胞浸润减少、心肌胶原沉积减少,心肌组织中MDA含量减少、SOD和GSH含量增加(P<0.01),心肌组织中Keap1、Cleaved-caspase3及bax表达下调,Nrf2、pNrf2、PRDX1、HO-1及Bcl2蛋白表达上调(P<0.05);与HG组相比,Sal B.L和Sal B.H量组心肌细胞中ROS表达、MDA含量减少,SOD和GSH含量增加(P<0.05),心肌细胞中的Keap1、Cleaved-caspase3及bax蛋白表达减少(P<0.05),Nrf2、pNrf2、PRDX1、HO-1及Bcl2表达增加(P<0.05);心肌细胞中的Keap1 mRNA表达降低(P<0.05),Nrf2、PRDX1和HO-1 mRNA表达升高(P<0.05);进一步采用Nrf2抑制剂ML385和激动剂甲基巴多索隆干预,与HG组相比,Sal B.H组心肌细胞中的Nrf2、pNrf2、PRDX1及HO-1表达增加(P<0.05);与Sal B.H组相比,ML385和Sal B联用组心肌细胞中的Nrf2、pNrf2、PRDX1及HO-1的表达减少(P<0.05)。结论Sal B可降低2型糖尿病小鼠DCM的氧化应激作用,其机制与Keap1/Nrf2信号通路蛋白的表达有关。 展开更多
关键词 糖尿病心肌病 氧化性应激 细胞凋亡 心肌 丹酚酸B 核因子-红细胞-2相关因子2
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金合欢素调节Sirt1/AMPK/Nrf2信号通路对糖尿病白内障大鼠氧化应激损伤的影响
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作者 罗元元 曹静洁 +3 位作者 王海营 封传 唐陶富 胡洁 《眼科新进展》 CAS 北大核心 2024年第6期433-437,共5页
目的探讨金合欢素对糖尿病白内障(DC)大鼠氧化应激损伤的影响及其对沉默调节蛋白1(Sirt1)/腺苷酸活化蛋白激酶(AMPK)/核因子E2相关因子2(Nrf2)信号通路的调控作用。方法60只SD大鼠随机分为对照组、模型组、金合欢素低剂量组、金合欢素... 目的探讨金合欢素对糖尿病白内障(DC)大鼠氧化应激损伤的影响及其对沉默调节蛋白1(Sirt1)/腺苷酸活化蛋白激酶(AMPK)/核因子E2相关因子2(Nrf2)信号通路的调控作用。方法60只SD大鼠随机分为对照组、模型组、金合欢素低剂量组、金合欢素高剂量组、金合欢素+Sirt1抑制剂(EX527)组,除对照组以外均构建DC大鼠模型,其中,金合欢素低剂量组、金合欢素高剂量组大鼠分别经颈部皮下注射10 mg·kg^(-1)、20 mg·kg^(-1)的金合欢素,金合欢素+EX527组大鼠经颈部皮下注射20 mg·kg^(-1)金合欢素,均为每天2次,同时金合欢素+EX527组大鼠经皮下埋入渗透微型泵每天泵入3.5 mg·kg^(-1)EX527,其余组别均泵入等量生理盐水,给药持续4周。给药结束后,测量血压和空腹血糖(FBG),裂隙灯照射法观察大鼠晶状体混浊状况,HE染色观察晶状体组织病理学变化,ELISA测定血清丙二醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、白细胞介素(IL)-6、IL-1β的含量,Western blot检测Sirt1、p-AMPK、AMPK、Nrf2蛋白表达水平。结果与对照组相比,模型组大鼠晶状体上皮细胞呈片状、条索状,发生迁移性聚集,收缩压、FBG、晶状体混浊评分、MDA、IL-6、IL-1β水平均升高,SOD、GSH-Px含量及Sirt1、p-AMPK/AMPK、Nrf2蛋白表达水平均降低(均为P<0.05);与模型组比较,金合欢素低、高剂量组大鼠晶状体上皮细胞迁移性聚集现象改善,收缩压、FBG、晶状体混浊评分、MDA、IL-6、IL-1β水平均降低,SOD、GSH-Px含量及Sirt1、p-AMPK/AMPK、Nrf2蛋白表达水平均升高(均为P<0.05);与金合欢素高剂量组比较,金合欢素+EX527组晶状体上皮细胞形态改变和聚集现象加重,收缩压、FBG、晶状体混浊评分、MDA、IL-6、IL-1β水平均升高,SOD、GSH-Px含量及Sirt1、p-AMPK/AMPK、Nrf2蛋白表达水平均降低(均为P<0.05)。结论金合欢素可能通过激活Sirt1/AMPK/Nrf2通路保护DC大鼠免受氧化应激损伤。 展开更多
关键词 金合欢素 糖尿病白内障 氧化应激损伤 沉默调节蛋白1/腺苷酸活化蛋白激酶/核因子E2相关因子2信号通路
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抑制核转录因子E2相关因子2途径对高糖状态下胰腺癌细胞转移及免疫逃逸因子表达的调节作用
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作者 唐津天 唐润娟 +1 位作者 薛峰 黎旺红 《中国免疫学杂志》 CAS CSCD 北大核心 2024年第9期1883-1888,共6页
目的:探究抑制核转录因子E2相关因子2(Nrf2)途径对高糖状态下胰腺癌细胞转移及分泌免疫逃逸因子水平的影响。方法:培养人胰腺癌细胞株Panc-1,采用5.5、10、25、50 mmol/L葡萄糖处理细胞,分别于12 h、24 h、48 h通过MTT检测细胞增殖率,2... 目的:探究抑制核转录因子E2相关因子2(Nrf2)途径对高糖状态下胰腺癌细胞转移及分泌免疫逃逸因子水平的影响。方法:培养人胰腺癌细胞株Panc-1,采用5.5、10、25、50 mmol/L葡萄糖处理细胞,分别于12 h、24 h、48 h通过MTT检测细胞增殖率,24 h时通过RT-qPCR和Western blot检测细胞内Nrf2表达变化;实验分为:对照组、高糖(HG)组、Nrf2抑制剂ML385+高糖(ML385+HG)组,MTT检测细胞增殖率,细胞克隆形成实验检测细胞集落形成数,Transwell检测细胞迁移数与侵袭数,体外划痕实验检测细胞划痕愈合情况,ELISA测定细胞培养液上清中血管内皮生长因子(VEGF)、IFN-γ、转化生长因子-β1(TGF-β1)和IL-6含量,细胞免疫荧光染色观察细胞内Nrf2分布,Western blot测定细胞中Nrf2和血红素加氧酶-1(HO-1)蛋白表达。结果:相较于5.5 mmol/L葡萄糖组,10、25、50 mmol/L葡萄糖处理12 h和24 h时Panc-1细胞增殖率升高,Nrf2 mRNA和蛋白表达均升高(P<0.05);与对照组比较,HG组细胞增殖率升高,集落形成数增加,迁移数与侵袭数均增加,划痕愈合率升高,细胞培养上清中VEGF、IFN-γ、TGF-β1和IL-6含量均增加,Nrf2荧光染色明显增强,细胞核内Nrf2表达增加,Nrf2和HO-1蛋白表达上调(P<0.05);与HG组比较,ML385+HG组细胞增殖率降低,集落形成数、迁移数与侵袭数均减少,划痕愈合率下降,培养上清中VEGF、IFN-γ、TGF-β1和IL-6含量均减少,细胞内Nrf2荧光染色较弱,Nrf2和HO-1蛋白表达下调(P<0.05)。结论:高糖状态下胰腺癌细胞中Nrf2高表达,抑制Nrf2途径能够抑制高糖促进的胰腺癌细胞增殖、迁移及侵袭,并减少免疫逃逸因子分泌。 展开更多
关键词 胰腺癌 高糖 核转录因子E2相关因子2 免疫逃逸因子
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马钱苷调节AKT/AMPK/Nrf2通路改善氧葡萄糖剥夺/复氧诱导的神经元铁死亡的机制研究
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作者 杨祎 贾健 +3 位作者 魏小利 苟平平 袁媛 高李 《中西医结合心脑血管病杂志》 2024年第9期1597-1603,共7页
目的:探讨马钱苷通过调节蛋白激酶B(AKT)/腺苷酸活化蛋白激酶(AMPK)/核因子-E2相关因子2(Nrf2)通路改善氧葡萄糖剥夺/复氧(OGD/R)诱导的神经元铁死亡的机制。方法:将神经元分为对照组、OGD/R组、OGD/R+L-马钱苷组、OGD/R+M-马钱苷组、OG... 目的:探讨马钱苷通过调节蛋白激酶B(AKT)/腺苷酸活化蛋白激酶(AMPK)/核因子-E2相关因子2(Nrf2)通路改善氧葡萄糖剥夺/复氧(OGD/R)诱导的神经元铁死亡的机制。方法:将神经元分为对照组、OGD/R组、OGD/R+L-马钱苷组、OGD/R+M-马钱苷组、OGD/R+H-马钱苷组、OGD/R+H-马钱苷+ML385组。透射电子显微镜观察神经元线粒体形态;检测铁含量、谷胱甘肽过氧化物酶4(GPX4)活性、4-羟基壬烯醛(4-HNE)、超氧化物歧化酶(SOD)、丙二醛(MDA)、还原型谷胱甘肽(GSH)/氧化型谷胱甘肽(GSSG),还原型辅酶Ⅱ(NADPH)/辅脱氢酶Ⅱ(NADP^(+))及乳酸脱氢酶(LDH)含量;使用CM-H2DCFDA、C11-BODIPY581/591分别检测细胞内和脂质活性氧(ROS)水平;四唑盐(MTT)试剂盒检测细胞活性;蛋白免疫印迹法(Western Blot)检测B细胞淋巴瘤2(Bcl-2)、Bcl相关X蛋白(Bax)、剪切的半胱天冬氨酸蛋白酶3(cleaved Caspase-3)、磷酸化的蛋白激酶B(p-AKT)/AKT、磷酸化的腺苷酸活化蛋白激酶(p-AMPK)/AMPK、Nrf2蛋白表达。结果:OGD/R组神经元线粒体出现碎片化现象,嵴减少,线粒体膜密度有所增加。与对照组比较,OGD/R组GSH/GSSG、NADPH/NADP^(+)、SOD、GPX4相对活性、细胞活力以及Bcl-2水平、p-AKT/AKT、p-AMPK/AMPK、Nrf2水平下降(P<0.05),Fe^(2+)含量、细胞内ROS水平、脂质ROS水平以及4-HNE、MDA水平、LDH释放量、Bax以及cleaved Caspase-3水平上升(P<0.05);马钱苷处理后神经元线粒体中的线粒体嵴变得较为完整,碎片化现象消失,OGD/R+L-马钱苷组、OGD/R+M-马钱苷组、OGD/R+H-马钱苷组较OGD/R组GSH/GSSG、NADPH/NADP^(+)、SOD、GPX4相对活性、细胞活力以及Bcl-2水平、p-AKT/AKT、p-AMPK/AMPK、Nrf2水平上升(P<0.05),Fe^(2+)含量、细胞内ROS水平、脂质ROS水平以及4-HNE、MDA水平、LDH释放量、Bax以及cleaved Caspase-3水平下降(P<0.05),且随着马钱苷剂量的增加,改善效果更显著;OGD/R+H-马钱苷+ML385组以上指标与OGD/R组趋势一致。结论:马钱苷可能通过调节AKT/AMPK/Nrf2通路改善OGD/R诱导的神经元铁死亡。 展开更多
关键词 氧葡萄糖剥夺/复氧 铁死亡 马钱苷 蛋白激酶B/腺苷酸活化蛋白激酶/核因子-E2相关因子2通路 神经元
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非酒精性脂肪性肝炎患者血清Nrf2、AOPP水平与血脂、肝纤维化的关系
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作者 王鹏森 何瑛 +1 位作者 李同心 陈继德 《国际检验医学杂志》 CAS 2024年第19期2345-2348,共4页
目的探讨非酒精性脂肪性肝炎(NASH)患者血清核因子E2相关因子2(Nrf2)、晚期氧化蛋白产物(AOPP)水平与血脂、肝纤维化的关系。方法选择重庆医科大学附属璧山医院收治的104例NASH患者作为研究组,另选90例体检健康者作为对照组。检测并比... 目的探讨非酒精性脂肪性肝炎(NASH)患者血清核因子E2相关因子2(Nrf2)、晚期氧化蛋白产物(AOPP)水平与血脂、肝纤维化的关系。方法选择重庆医科大学附属璧山医院收治的104例NASH患者作为研究组,另选90例体检健康者作为对照组。检测并比较各组血清Nrf2、AOPP水平,采用Pearson或Spearman相关分析NASH患者血清Nrf2、AOPP水平与血脂、肝纤维化的关系,采用受试者工作特征(ROC)曲线评估血清Nrf2、AOPP水平对NASH的诊断价值。结果研究组甘油三酯(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、Nrf2、AOPP水平均高于对照组(P<0.05),高密度脂蛋白胆固醇(HDL-C)水平明显低于对照组(P<0.05)。重度组血清Nrf2、AOPP水平高于中度组、轻度组(P<0.05),中度组血清Nrf2、AOPP水平高于轻度组(P<0.05)。相关分析结果显示,NASH患者血清Nrf2、AOPP水平与TG、TC、LDL-C、肝纤维化程度均呈正相关(P<0.05),与HDL-C呈负相关(P<0.05)。血清Nrf2诊断NASH的曲线下面积(AUC)为0.830(95%CI 0.780~0.880),血清AOPP诊断NASH的AUC为0.866(95%CI 0.816~0.916),二者联合诊断NASH的AUC为0.925(95%CI 0.875~0.975)。结论NASH患者血清Nrf2、AOPP水平均升高,且二者水平与血脂、肝纤维化程度均存在密切关系,有望作为诊断NASH发生的有效指标。 展开更多
关键词 非酒精性脂肪性肝炎 核因子E2相关因子2 晚期氧化蛋白产物 血脂 肝纤维化
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紫草素调节Nrf2/HO-1信号通路对实验性大鼠肉芽肿性小叶性乳腺炎的治疗作用研究
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作者 李凡凡 徐阳 王晓旭 《中国临床解剖学杂志》 CSCD 北大核心 2024年第1期26-32,共7页
目的探究紫草素(Shikonin,SHI)通过调节核因子-红细胞2型相关因子2/血红素加氧酶(Nrf2/HO-1)信号通路对肉芽肿性小叶性乳腺炎模型大鼠的影响及作用机制。方法建立肉芽肿性小叶性乳腺炎(GLM)大鼠模型,将大鼠分为对照组(Control组)、模型... 目的探究紫草素(Shikonin,SHI)通过调节核因子-红细胞2型相关因子2/血红素加氧酶(Nrf2/HO-1)信号通路对肉芽肿性小叶性乳腺炎模型大鼠的影响及作用机制。方法建立肉芽肿性小叶性乳腺炎(GLM)大鼠模型,将大鼠分为对照组(Control组)、模型组(GLM组)、紫草素低剂量组(SHI-L组,17.5 mg·kg^(-1)·d^(-1)SHI)、紫草素中剂量组(SHI-M组,35 mg·kg^(-1)·d^(-1)SHI)、紫草素高剂量组(SHI-H组,70mg·kg^(-1)·d^(-1)SHI)和紫草素高剂量+Nrf2抑制剂ML385组(SHI-H+ML385组,70 mg·kg^(-1)·d^(-1)SHI+14 mg·kg^(-1)·d^(-1)ML385)。HE染色观察乳腺组织病理变化情况;ELISA检测乳腺组织中IL-1β、TNF-α、IL-8、T-AOC、SOD、GSH、MPO、NAGase和ROS水平;免疫荧光检测NLRP3表达;Western blotting检测Nrf2和HO-1蛋白表达。结果与Control组相比,GLM组大鼠乳腺小叶完全被破坏、大片结节样慢性肉芽肿炎性病灶生成,乳腺小叶组织边界不清,腺叶内出现空泡,伴有大量淋巴细胞及中性粒细胞浸润;IL-8、IL-1β、TNF-α、ROS、MPO和NAGase水平、NLRP3阳性表达率显著增加(P<0.05),T-AOC、SOD和GSH水平、Nrf2和HO-1蛋白表达显著降低(P<0.05)。与GLM组相比,SHI-L组、SHI-M组和SHI-H组乳腺组织病变逐渐减轻;IL-8、IL-1β、TNF-α、ROS、MPO和NAGase水平、NLRP3阳性表达率依次降低(P<0.05),T-AOC、SOD和GSH水平、Nrf2和HO-1蛋白表达依次升高(P<0.05)。与SHI-H组相比,SHI-H+ML385组乳腺组织病变加重;IL-8、IL-1β、TNF-α、ROS、MPO和NAGase水平、NLRP3阳性表达率显著增加(P<0.05),T-AOC、SOD和GSH水平、Nrf2和HO-1蛋白表达显著降低(P<0.05)。结论紫草素发挥抗炎抗氧化作用改善大鼠肉芽肿性小叶性乳腺炎,其机制可能与激活Nrf2信号通路,上调HO-1表达有关。 展开更多
关键词 紫草素 核因子-红细胞2型相关因子2/血红素加氧酶信号通路 肉芽肿性小叶性乳腺炎
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