Background Oxidative stress,caused by an imbalance in the production and elimination of intracellular reactive oxygen species(ROS),has been recognized for its detrimental effects on mammalian embryonic development.Lut...Background Oxidative stress,caused by an imbalance in the production and elimination of intracellular reactive oxygen species(ROS),has been recognized for its detrimental effects on mammalian embryonic development.Luteolin(Lut)has been documented for its protective effects against oxidative stress in various studies.However,its specific role in embryonic development remains unexplored.This study aims to investigate the influence of Lut on porcine embryonic development and to elucidate the underlying mechanism.Results After undergoing parthenogenetic activation(PA)or in vitro fertilization,embryos supplemented with 0.5μmol/L Lut displayed a significant enhancement in cleavage and blastocyst formation rates,with an increase in total cell numbers and a decrease in the apoptosis rate compared to the control.Measurements on D2 and D6 revealed that embryos with Lut supplementation had lower ROS levels and higher glutathione levels compared to the control.Moreover,Lut supplementation significantly augmented mitochondrial content and membrane potential.Intriguingly,activation of the Nrf2/Keap1 signaling pathway was observed in embryos supplemented with Lut,leading to the upregulation of antioxidant-related gene transcription levels.To further validate the relationship between the Nrf2/Keap1 signaling pathway and effects of Lut in porcine embryonic development,we cultured PA embryos in a medium supplemented with brusatol,with or without the inclusion of Lut.The positive effects of Lut on developmental competence were negated by brusatol treatment.Conclusions Our findings indicate that Lut-mediated activation of the Nrf2/Keap1 signaling pathway contributes to the enhanced production of porcine embryos with high developmental competence,and offers insight into the mechanisms regulating early embryonic development.展开更多
Age-related eye diseases,including cataract,glaucoma,diabetic retinopathy(DR),and age-related macular degeneration(AMD),are the leading causes of vision loss in the world.Several studies have shown that the occurrence...Age-related eye diseases,including cataract,glaucoma,diabetic retinopathy(DR),and age-related macular degeneration(AMD),are the leading causes of vision loss in the world.Several studies have shown that the occurrence and development of these diseases have an important relationship with oxidative stress in the eye.The Keap1-Nrf2-ARE pathway is a classical pathway that resists oxidative stress and inflammation in the body.This pathway is also active in the development of age-related eye diseases.A variety of drugs have been shown to treat agerelated eye diseases through the Keap1-Nrf2-ARE(Kelch-like ECH-Associating protein 1-nuclear factor erythroid 2 related factor 2-antioxidant response element)pathway.This review describes the role of oxidative stress in the development of age-related eye diseases,the function and regulation of the Keap1-Nrf2-ARE pathway,and the therapeutic effects of drugs associated with this pathway on age-related eye diseases.展开更多
目的研究醒脑静注射液对急性脑梗死(ACI)患者Keap1-Nrf2/ARE氧化应激通路中Keap1、Nrf2、ARE和NQO1蛋白表达以及日常生活活动能力(MBI评分)的影响,探讨醒脑静注射液在脑缺血再灌注氧化损伤过程中Keap1-Nrf2/ARE通路的作用机制。方法选择...目的研究醒脑静注射液对急性脑梗死(ACI)患者Keap1-Nrf2/ARE氧化应激通路中Keap1、Nrf2、ARE和NQO1蛋白表达以及日常生活活动能力(MBI评分)的影响,探讨醒脑静注射液在脑缺血再灌注氧化损伤过程中Keap1-Nrf2/ARE通路的作用机制。方法选择ACI患者70例,随机分为对照组及观察组,每组35例,两组均进行一般常规治疗,观察组加用醒脑静30 m L加入生理盐水注射液250 m L,静脉滴注,1次/d,连用14d。比较两组治疗前以及治疗后7、14 d外周血单个核细胞(PBMC)中Keap1、Nrf2、ARE和NQO1蛋白表达水平,观察治疗前后MBI评分。结果治疗后观察组与对照组比较MBI评分明显升高(P<0.05),治疗后两组Nrf2、ARE和NQO1蛋白表达水平与治疗前比较均明显升高而Keap1降低(P<0.05,P<0.01);观察组治疗后以上指标均显著优于对照组(P<0.05);对照组和观察组Nrf2、ARE和NQO1蛋白表达与MBI评分呈正相关,与Keap1呈负相关(P<0.05,P<0.01)。结论醒脑静注射液治疗ACI与Keap1-Nrf2/ARE通路可能通过上调保护性因子Nrf2、ARE和NQO1,下调有害性因子Keap1的表达而对抗急性脑缺血再灌注损伤,降低细胞氧化损伤的程度,起到促进患者日常生活活动能力恢复的作用。展开更多
Objective:To investigate the mechanism of serum uric acid in Ankylosing spondylitis(AS)through the Kelch-like ECH-Associating protein 1(Keap1)-nuclear factor erythroid 2 related factor 2(Nrf2)signaling pathway.Methods...Objective:To investigate the mechanism of serum uric acid in Ankylosing spondylitis(AS)through the Kelch-like ECH-Associating protein 1(Keap1)-nuclear factor erythroid 2 related factor 2(Nrf2)signaling pathway.Methods:A total of 60 AS patients in our hospital from March 2018 to October 2019 were recruited and divided into the active group(>4 points,26 cases)and the inactive group(≤4 points,34 cases)according to the Bath Ankylosing Spondylitis Disease Activity Index(BASDAI).Keap1,Nrf2,catalase(CAT),superoxide dismutase(SOD),Malondialdehyde(MDA),reactive nitrogen species(RNS),reactive oxygen species(ROS)were detected by ELISA;furthermore,erythrocyte sedimentation rate(ESR),Uric acid(UA)and C-reactive protein(CRP)were tested.The relationship among UA,BASDAI and oxidative stress indicators were analyzed.Results:The expression levels of ESR,CRP,UA,ROS,RNS,MDA,and Keap1 in the active group were significantly higher than those in the inactive group(all P<0.001);the levels of Nrf2,CAT,and SOD in the active group were higher than those in the inactive group,markedly reduced(all P<0.001)in the inactive group.The Pearson's correlation coefficient showed that ROS,RNS,MDA,and Keap1 were notably positively correlated with blood UA and BASDAI in the active group with AS patients;while Nrf2,CAT,and SOD were negatively correlated with blood UA and BASDAI.Moreover,blood UA and BASDAI were found to be moderately positively correlated.Conclusion:The results in the study demonstrate that the UA level in blood is related to the AS disease activity,blood UA exerts the pro-inflammatory effects,increasing oxidative stress injury and reducing antioxidant capacity,possibly by activating the Keap1-Nrf2 pathway.展开更多
目的：探讨眼针八区八穴对急性脑梗死患者Keapl—Nrf2/ARE信号传导通路的影响。方法：选取140例急性脑梗死患者作为研究对象，根据随机原则将140例患者随机分至对照组和观察组各70例，对照组予以抗血小板凝集、降低血黏度、改善脑功能...目的：探讨眼针八区八穴对急性脑梗死患者Keapl—Nrf2/ARE信号传导通路的影响。方法：选取140例急性脑梗死患者作为研究对象，根据随机原则将140例患者随机分至对照组和观察组各70例，对照组予以抗血小板凝集、降低血黏度、改善脑功能、改善脑循环等药物治疗，观察组在对照组治疗基础上加以眼针八区八穴治疗，以上焦区穴及下焦区穴作为主穴，以肾区穴、肝区穴作为配穴，每10min行针1次，针刺时间为20min，每日针刺1次。两组患者的治疗周期均为2周。分别采用美国国立卫生研究院卒中量表（National Institute ofHealth stroke scale，NIHSS）、Barthel指数评价两组患者治疗前后神经功能缺损情况及日常生活活动能力变化情况，并比较两组患者的临床疗效。同时测量两组患者治疗前及治疗后14d外周血单个核细胞中Keapl、NQ01、ARE和Nrf2蛋白表达水平。结果：治疗后，对照组及观察组的NIHSS量表评分、Keapl蛋白水平均显著低于治疗前，且观察显著低于对照组；对照组及观察组的Barthel指数、NQ01、ARE和Nrf2蛋白表达水平均显著高于治疗前，且观察组显著高于对照组；均P〈0．05。对照组的总有效率为80．00％，观察组的总有效率为92．85％，经z检验，观察组的总有效率显著高于对照组，均P〈0.05。结论：眼针八区八穴治疗急性脑梗死可有效改善患者的神经功能缺损症状，提高患者的生活活动能力，这可能与眼针八区八穴提高NQ01、ARE和Nrf2蛋白的表达水平，降低Keapl蛋白的表达水平，改善Keap1—Nrf2/ARE信号传导通路，从而对抗急性脑缺血再灌注损伤，降低细胞氧化损伤程度等有关。展开更多
基金supported by the Korea Research Institute of Bioscience and Biotechnology(KRIBB)Research Initiative Program(KGM4252331,KGM5382322),Republic of Korea.
文摘Background Oxidative stress,caused by an imbalance in the production and elimination of intracellular reactive oxygen species(ROS),has been recognized for its detrimental effects on mammalian embryonic development.Luteolin(Lut)has been documented for its protective effects against oxidative stress in various studies.However,its specific role in embryonic development remains unexplored.This study aims to investigate the influence of Lut on porcine embryonic development and to elucidate the underlying mechanism.Results After undergoing parthenogenetic activation(PA)or in vitro fertilization,embryos supplemented with 0.5μmol/L Lut displayed a significant enhancement in cleavage and blastocyst formation rates,with an increase in total cell numbers and a decrease in the apoptosis rate compared to the control.Measurements on D2 and D6 revealed that embryos with Lut supplementation had lower ROS levels and higher glutathione levels compared to the control.Moreover,Lut supplementation significantly augmented mitochondrial content and membrane potential.Intriguingly,activation of the Nrf2/Keap1 signaling pathway was observed in embryos supplemented with Lut,leading to the upregulation of antioxidant-related gene transcription levels.To further validate the relationship between the Nrf2/Keap1 signaling pathway and effects of Lut in porcine embryonic development,we cultured PA embryos in a medium supplemented with brusatol,with or without the inclusion of Lut.The positive effects of Lut on developmental competence were negated by brusatol treatment.Conclusions Our findings indicate that Lut-mediated activation of the Nrf2/Keap1 signaling pathway contributes to the enhanced production of porcine embryos with high developmental competence,and offers insight into the mechanisms regulating early embryonic development.
基金Supported by National Natural Science Foundation of China(No.81970801No.81670859)+1 种基金Natural Science Foundation of Hunan Province(No.2019JJ40001)Key Project of Changsha Science and Technology Bureau(No.kh1801229)。
文摘Age-related eye diseases,including cataract,glaucoma,diabetic retinopathy(DR),and age-related macular degeneration(AMD),are the leading causes of vision loss in the world.Several studies have shown that the occurrence and development of these diseases have an important relationship with oxidative stress in the eye.The Keap1-Nrf2-ARE pathway is a classical pathway that resists oxidative stress and inflammation in the body.This pathway is also active in the development of age-related eye diseases.A variety of drugs have been shown to treat agerelated eye diseases through the Keap1-Nrf2-ARE(Kelch-like ECH-Associating protein 1-nuclear factor erythroid 2 related factor 2-antioxidant response element)pathway.This review describes the role of oxidative stress in the development of age-related eye diseases,the function and regulation of the Keap1-Nrf2-ARE pathway,and the therapeutic effects of drugs associated with this pathway on age-related eye diseases.
文摘目的研究醒脑静注射液对急性脑梗死(ACI)患者Keap1-Nrf2/ARE氧化应激通路中Keap1、Nrf2、ARE和NQO1蛋白表达以及日常生活活动能力(MBI评分)的影响,探讨醒脑静注射液在脑缺血再灌注氧化损伤过程中Keap1-Nrf2/ARE通路的作用机制。方法选择ACI患者70例,随机分为对照组及观察组,每组35例,两组均进行一般常规治疗,观察组加用醒脑静30 m L加入生理盐水注射液250 m L,静脉滴注,1次/d,连用14d。比较两组治疗前以及治疗后7、14 d外周血单个核细胞(PBMC)中Keap1、Nrf2、ARE和NQO1蛋白表达水平,观察治疗前后MBI评分。结果治疗后观察组与对照组比较MBI评分明显升高(P<0.05),治疗后两组Nrf2、ARE和NQO1蛋白表达水平与治疗前比较均明显升高而Keap1降低(P<0.05,P<0.01);观察组治疗后以上指标均显著优于对照组(P<0.05);对照组和观察组Nrf2、ARE和NQO1蛋白表达与MBI评分呈正相关,与Keap1呈负相关(P<0.05,P<0.01)。结论醒脑静注射液治疗ACI与Keap1-Nrf2/ARE通路可能通过上调保护性因子Nrf2、ARE和NQO1,下调有害性因子Keap1的表达而对抗急性脑缺血再灌注损伤,降低细胞氧化损伤的程度,起到促进患者日常生活活动能力恢复的作用。
基金Hainan health and family planning industry scientific research project (18A200018)
文摘Objective:To investigate the mechanism of serum uric acid in Ankylosing spondylitis(AS)through the Kelch-like ECH-Associating protein 1(Keap1)-nuclear factor erythroid 2 related factor 2(Nrf2)signaling pathway.Methods:A total of 60 AS patients in our hospital from March 2018 to October 2019 were recruited and divided into the active group(>4 points,26 cases)and the inactive group(≤4 points,34 cases)according to the Bath Ankylosing Spondylitis Disease Activity Index(BASDAI).Keap1,Nrf2,catalase(CAT),superoxide dismutase(SOD),Malondialdehyde(MDA),reactive nitrogen species(RNS),reactive oxygen species(ROS)were detected by ELISA;furthermore,erythrocyte sedimentation rate(ESR),Uric acid(UA)and C-reactive protein(CRP)were tested.The relationship among UA,BASDAI and oxidative stress indicators were analyzed.Results:The expression levels of ESR,CRP,UA,ROS,RNS,MDA,and Keap1 in the active group were significantly higher than those in the inactive group(all P<0.001);the levels of Nrf2,CAT,and SOD in the active group were higher than those in the inactive group,markedly reduced(all P<0.001)in the inactive group.The Pearson's correlation coefficient showed that ROS,RNS,MDA,and Keap1 were notably positively correlated with blood UA and BASDAI in the active group with AS patients;while Nrf2,CAT,and SOD were negatively correlated with blood UA and BASDAI.Moreover,blood UA and BASDAI were found to be moderately positively correlated.Conclusion:The results in the study demonstrate that the UA level in blood is related to the AS disease activity,blood UA exerts the pro-inflammatory effects,increasing oxidative stress injury and reducing antioxidant capacity,possibly by activating the Keap1-Nrf2 pathway.
文摘目的：探讨眼针八区八穴对急性脑梗死患者Keapl—Nrf2/ARE信号传导通路的影响。方法：选取140例急性脑梗死患者作为研究对象，根据随机原则将140例患者随机分至对照组和观察组各70例，对照组予以抗血小板凝集、降低血黏度、改善脑功能、改善脑循环等药物治疗，观察组在对照组治疗基础上加以眼针八区八穴治疗，以上焦区穴及下焦区穴作为主穴，以肾区穴、肝区穴作为配穴，每10min行针1次，针刺时间为20min，每日针刺1次。两组患者的治疗周期均为2周。分别采用美国国立卫生研究院卒中量表（National Institute ofHealth stroke scale，NIHSS）、Barthel指数评价两组患者治疗前后神经功能缺损情况及日常生活活动能力变化情况，并比较两组患者的临床疗效。同时测量两组患者治疗前及治疗后14d外周血单个核细胞中Keapl、NQ01、ARE和Nrf2蛋白表达水平。结果：治疗后，对照组及观察组的NIHSS量表评分、Keapl蛋白水平均显著低于治疗前，且观察显著低于对照组；对照组及观察组的Barthel指数、NQ01、ARE和Nrf2蛋白表达水平均显著高于治疗前，且观察组显著高于对照组；均P〈0．05。对照组的总有效率为80．00％，观察组的总有效率为92．85％，经z检验，观察组的总有效率显著高于对照组，均P〈0.05。结论：眼针八区八穴治疗急性脑梗死可有效改善患者的神经功能缺损症状，提高患者的生活活动能力，这可能与眼针八区八穴提高NQ01、ARE和Nrf2蛋白的表达水平，降低Keapl蛋白的表达水平，改善Keap1—Nrf2/ARE信号传导通路，从而对抗急性脑缺血再灌注损伤，降低细胞氧化损伤程度等有关。
