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Angiotensin-converting enzyme 2 alleviates liver fibrosis through the renin-angiotensin system 被引量:3
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作者 Bai-Wei Zhao Ying-Jia Chen +2 位作者 Ruo-Peng Zhang Yong-Ming Chen Bo-Wen Huang 《World Journal of Gastroenterology》 SCIE CAS 2024年第6期607-609,共3页
The present letter to the editor is related to the study titled‘Angiotensin-converting enzyme 2 improves liver fibrosis in mice by regulating autophagy of hepatic stellate cells’.Angiotensin-converting enzyme 2 can ... The present letter to the editor is related to the study titled‘Angiotensin-converting enzyme 2 improves liver fibrosis in mice by regulating autophagy of hepatic stellate cells’.Angiotensin-converting enzyme 2 can alleviate liver fibrosis by regulating autophagy of hepatic stellate cells and affecting the renin-angiotensin system. 展开更多
关键词 angiotensin-converting enzyme 2 Hepatic stellate cells Liver fibrosis angiotensin II angiotensin 1-7 renin-angiotensin system
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Association between renin-angiotensin system inhibitor and the risk of CMV pneumonia:a Mendelian randomization study
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作者 Jian-Sheng Gao Hui-Min Liu Huang-Yao Ru 《Clinical Research Communications》 2024年第4期5-10,共6页
Background:Cytomegalovirus(CMV)reactivation is linked to a high mortality rate,especially among the elderly.Prior research suggests that renin-angiotensin system(RAS)inhibitors may influence both the onset and prognos... Background:Cytomegalovirus(CMV)reactivation is linked to a high mortality rate,especially among the elderly.Prior research suggests that renin-angiotensin system(RAS)inhibitors may influence both the onset and prognosis of pneumonia.This study aims to examine the causal relationship between RAS inhibitor use and the risk of CMV pneumonia using Mendelian randomization(MR)analysis.Methods:We conducted an analysis using data from two genome-wide association studies(GWAS)involving individuals of European ancestry.This dataset included individuals treated with RAS inhibitors and those with CMV pneumonia.We assessed the relationship between RAS inhibitor use and CMV pneumonia risk using the inverse variance weighted(IVW)method.The results were further evaluated for pleiotropy,heterogeneity,and robustness.Results:The Mendelian randomization(MR)analysis revealed a causal relationship between RAS inhibitor use and an increased risk of CMV pneumonia(IVW:odds ratio[OR]=2.73;95%confidence interval[CI]=1.11-6.73;P=0.028).Conclusions:Our finding indicate a positive causal relationship between the use of RAS inhibitors and the onset of CMV pneumonia. 展开更多
关键词 Mendelian randomization CMV pneumonia renin angiotensin system inhibitors
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The Beneficial Effect of Renin-Angiotensin-Aldosterone System Blockade in Treatment of Hypertension, Resistant to Conventional Antihypertensives, in Patients on Maintenance Hemodialysis 被引量:2
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作者 Kamel El-Reshaid Shaikha Al-Bader 《Open Journal of Nephrology》 2023年第2期67-73,共7页
Background: Hypertension (HTN) is present in up to 90% of end stage kidney disease (ESRD) patients irrespective of the etiology of their kidney disease. Moreover, it is an important modifiable risk factor for progress... Background: Hypertension (HTN) is present in up to 90% of end stage kidney disease (ESRD) patients irrespective of the etiology of their kidney disease. Moreover, it is an important modifiable risk factor for progression to ESRD and its overall cardiovascular morbidity and mortality. Objective: to evaluate, prospectively, the role of Renin-Angiotensin-Aldosterone System blockade (RAAS) in HTN, resistant to 3 conventional antihypertensives, in patients on maintenance hemodialysis (MHD). Patients and methods: A total of 52 such patients were treated with Ramipril and 5 with Losartan after intolerable cough/shortness of breath following Ramipril-use. None of the patients had fluid depletion, renal artery stenosis and primary endocrinopathy. The study group was compared to a matched control group of MHD patients with normal blood pressure following 3 drugs-combination therapies. Results: All patients, with resistant HTN, had significant activation of RAAS system prior to treatment compared to inactive one in the control group. In those with resistant HTN, control of HTN, was established within 2 weeks of therapy and was associated with suppression of the RAAS. Such therapy was associated with minor side effects. Conclusion: Our study has shown that RAAS blockade is safe and effective in controlling such resistant HTN in MHD patients. 展开更多
关键词 ACEI ALDOSTERONE angiotensin ARB HEMODIALYSIS HYPERTENSION renin Resistant Hypertension
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Biological function of miRNA-145-5p in angiotensin II induced renal inflammation
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作者 BIN LI YUCHENG SHENG +7 位作者 XIAOYING XU SHENGCUN WANG HONGYAN SONG JINGYUAN LI HAONAN JI QINGHUA WANG XIAODI ZHOU LONGJU QI 《BIOCELL》 SCIE 2024年第4期601-611,共11页
Objective:Chronic kidney disease(CKD)is a progressive disorder characterized by intricate structural and functional alterations in the kidneys,attributable to diverse causative factors.Notably,the therapeutic promise ... Objective:Chronic kidney disease(CKD)is a progressive disorder characterized by intricate structural and functional alterations in the kidneys,attributable to diverse causative factors.Notably,the therapeutic promise of miR-145-5p in addressing renal pathologies has been discerned.This investigation seeks to elucidate the functional role of miR-145-5p in injured kidneys by subjecting human glomerular mesangial cells(HGMCs)to stimulation with Angiotensin II(AngII).Materials and Methods:Cellular viability and the levels of inflammatory mediators were evaluated utilizing Cell Counting Kit-8(CCK-8),quantitative real-time polymerase chain reaction(qRT-PCR),and western blot methodologies,both in the presence of AngII incubation and in scenarios of miR-145p overexpression and downregulation.Furthermore,the cell cycle dynamics were elucidated through Fluorescence-activated Cell Sorting(FACS)analysis.Results:AngII incubation induced an upregulation of miR-145-5p and inflammatory factors including Intercellular Adhesion Molecule 1(ICAM-1),Interleukin 6(IL-6),Interleukin 8(IL-8),and Interleukin 1β(IL-1β).Additionally,it elevated the expression of Cyclin A2,Cyclin D1,and the G2/M cell cycle ratio.Conversely,inhibition of miR-145-5p heightened the levels of inflammatory factors and cell cycle regulators induced by AngII incubation.Reduced expression of miR-145-5p correlated with a downregulation of Interleukin 10(IL-10)expression,concurrently promoting HGMC proliferation under AngII stimulation.Moreover,ectopic miR-145-5p expression demonstrated a reduction in inflammatory factors,cell cyclin regulators,G2/M cell cycle ratio,and overall proliferation.Conclusion:MiR-145-5p exhibited inhibitory effects on the inflammatory response and proliferation induced by Angiotensin II in HGMCs,showcasing its potential as a therapeutic avenue for the treatment of kidney injury. 展开更多
关键词 miR-145-5p KIDNEY angiotensin II Cell cycle INFLAMMATION
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肾素-血管紧张素系统在血管性痴呆大鼠心肌损伤中的作用
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作者 李键 朱博涵 +3 位作者 高鹏 陈极 陈和木 高晓平 《安徽医科大学学报》 CAS 北大核心 2024年第7期1123-1128,共6页
目的探讨肾素-血管紧张素系统在实验性血管性痴呆大鼠心肌损伤中的作用。方法24只成年雄性SD大鼠分为正常组、假手术组和模型组。Morris水迷宫用于评估大鼠学习记忆功能;免疫染色法观察心肌细胞横截面积和间质胶原蛋白分数以评估实验性... 目的探讨肾素-血管紧张素系统在实验性血管性痴呆大鼠心肌损伤中的作用。方法24只成年雄性SD大鼠分为正常组、假手术组和模型组。Morris水迷宫用于评估大鼠学习记忆功能;免疫染色法观察心肌细胞横截面积和间质胶原蛋白分数以评估实验性血管性痴呆引起的心肌改变。检测血清中血管紧张素Ⅱ(AngⅡ)和血管紧张素1-7(Ang1-7)的浓度,以及心肌中血管紧张素转换酶(ACE)、血管紧张素转换酶2(ACE2)、AngⅡ、Ang1-7、血管紧张素1型(AT1)受体和Mas受体的蛋白表达水平。结果与假手术组和正常组比较,模型组大鼠存在明显的认知功能障碍(P<0.01)和心肌损伤(P<0.0001)。此外,模型组大鼠心肌中肾素-血管紧张素系统的ACE/AngⅡ/AT1轴上调(P<0.01),而ACE2/Ang1-7/Mas轴下调(P<0.05)。结论实验性血管性痴呆大鼠心肌损伤可能与肾素-血管紧张素系统失调有关。 展开更多
关键词 血管性痴呆 肾素-血管紧张素系统 心肌损伤 -心相互作用
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补充血管紧张素(1-7)联合运动疗法对肾性高血压大鼠心脏重塑的作用与机制
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作者 徐文杰 谢旭东 +2 位作者 何瑞波 马刚 彭朋 《中国组织工程研究》 CAS 北大核心 2024年第26期4137-4144,共8页
背景:肾素-血管紧张素系统在高血压发生发展中起关键作用,其中血管紧张素(1-7)具有降压作用并反向调节血管紧张素Ⅱ的不良效应。运动康复疗法是防治高血压的重要非药物手段,然而血管紧张素(1-7)与运动是否具有协同效应尚未明确。目的:... 背景:肾素-血管紧张素系统在高血压发生发展中起关键作用,其中血管紧张素(1-7)具有降压作用并反向调节血管紧张素Ⅱ的不良效应。运动康复疗法是防治高血压的重要非药物手段,然而血管紧张素(1-7)与运动是否具有协同效应尚未明确。目的:观察补充血管紧张素(1-7)联合运动疗法对肾性高血压大鼠心脏重塑的影响,并探讨血管紧张素(1-7)及其受体信号轴在其中的可能作用机制。方法:60只雄性SD大鼠随机选取12只作为正常血压组,其余48只利用两肾一夹法制作肾性高血压模型并随机分为高血压对照组、高血压运动组、血管紧张素(1-7)组、联合治疗组。造模成功1周后,各组分别给予不同干预(为期6周):高血压运动组在电动跑台上进行跑步训练,血管紧张素(1-7)组通过植入大鼠背部皮下的Alzet微渗透泵灌流血管紧张素(1-7),联合治疗组在跑步训练后灌流血管紧张素(1-7),正常血压组和高血压对照组在鼠笼内安静饲养。末次训练后48 h,通过无创血压仪测定尾动脉血压;超声心动图检测心脏结构与功能;取左心室心肌,利用苏木精-伊红和马松染色进行心肌组织病理学观察,通过图像分析软件获取心肌细胞横截面积和胶原容积分数分别作为心肌肥大和心肌纤维化标志物;高效液相色谱法检测心脏血管紧张素(1-7)含量;qRT-PCR检测心脏胚胎基因心钠素和β-肌球蛋白重链mRNA表达量;免疫印迹法测定心脏Mas受体、血管紧张素2型受体和内皮型一氧化氮合成酶蛋白表达量。结果与结论:①与正常血压组比较,高血压对照组血压升高(P<0.05),心功能差异无显著变化(P>0.05),心肌细胞横截面积和胶原容积分数增加(P<0.05),心钠素和β-肌球蛋白重链mRNA表达量上调,血管紧张素(1-7)含量以及Mas受体、血管紧张素2型受体和内皮型一氧化氮合成酶蛋白表达量下调(P<0.05)。②与高血压对照组比较,运动组血压下降(P<0.05),心功能提高(P<0.05),胶原容积分数下降(P<0.05),心肌细胞横截面积和血管紧张素(1-7)含量无显著变化(P>0.05),心钠素和β-肌球蛋白重链mRNA表达量下调(P<0.05),Mas受体、血管紧张素2型受体和内皮型一氧化氮合成酶蛋白表达量上调(P<0.05);血管紧张素(1-7)组除心肌血管紧张素(1-7)含量升高(P<0.05)外,其他各参数差异均无显著性意义(P>0.05)。③与运动组比较,联合治疗组血压下降(P<0.05),心肌细胞横截面积和心功能无显著变化(P>0.05),胶原容积分数下降(P<0.05),血管紧张素(1-7)含量升高(P<0.05),心钠素和β-肌球蛋白重链mRNA表达量下调(P<0.05),Mas受体、血管紧张素2型受体和内皮型一氧化氮合成酶蛋白表达量上调(P<0.05)。④提示单独补充血管紧张素(1-7)并不能改善肾性高血压大鼠心脏重塑,但却能够增强运动的疗效,其机制与血管紧张素(1-7)受体缺陷改善并恢复其信号通路功能有关。 展开更多
关键词 肾性高血压 运动 肾素-血管紧张素系统 血管紧张素(1-7) 心脏重塑
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灵芝调脂茶对高血压合并高脂血症患者代谢指标及肾素-血管紧张素-醛固酮系统的影响探讨
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作者 朱琳 郑梅生 邹静 《中国现代药物应用》 2024年第5期16-20,共5页
目的 观察灵芝调脂茶对高血压合并高脂血症患者代谢指标及肾素-血管紧张素-醛固酮系统(RAAS)的影响。方法 101例高血压合并高脂血症患者为研究对象,按照随机数字表法分为治疗组(57例)和对照组(54例)。两组均指导健康生活方式,对照组口... 目的 观察灵芝调脂茶对高血压合并高脂血症患者代谢指标及肾素-血管紧张素-醛固酮系统(RAAS)的影响。方法 101例高血压合并高脂血症患者为研究对象,按照随机数字表法分为治疗组(57例)和对照组(54例)。两组均指导健康生活方式,对照组口服苯磺酸氨氯地平、瑞舒伐他汀治疗,治疗组在对照组基础上饮用灵芝调脂茶。比较两组治疗前后空腹血糖(FPG)、血脂指标[总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)]、尿酸(UA)、空腹胰岛素(FINS)、胰岛素抵抗指数(HOMA-IR)、RAAS[肾素活性(PRA)、血管紧张素Ⅱ(AngⅡ)、醛固酮(ALD)]。结果 两组治疗后TC、TG、LDL-C水平均较治疗前明显下降, HDL-C水平上升,且治疗组FPG、UA水平较治疗前明显下降,差异有统计学意义(P<0.05);对照组治疗后FPG、UA水平与治疗前比较无明显统计学意义(P>0.05);相比对照组,治疗组治疗后TC、TG、LDL-C水平下降更为显著, HDL-C水平上升更为明显,差异有统计学意义(P<0.05);两组治疗后FPG、UA组间比较无明显统计学意义(P>0.05)。两组治疗后FINS及HOMA-IR较治疗前均有下降,差异有统计学意义(P<0.05);治疗组治疗后FINS(89.51±33.00)pmol/L、HOMA-IR(3.16±1.44)均低于对照组的(104.09±38.76)pmol/L、(3.81±1.67),差异有统计学意义(P<0.05)。治疗组治疗后PRA、AngⅡ、ALD均较治疗前明显下降,差异有统计学意义(P<0.05);对照组治疗前后PRA无显著性差异(P>0.05);对照组治疗后AngⅡ、ALD均较治疗前明显下降,差异有统计学意义(P<0.05)。治疗组治疗后PRA(1.61±0.74)ng/(ml·h)、AngⅡ(87.19±10.05)pg/ml、ALD(112.08±30.85)pg/ml均低于对照组的(2.02±0.32)ng/(ml·h)、(93.08±14.80)pg/ml、(128.25±25.25)pg/ml,差异有统计学意义(P<0.05)。两组患者治疗期间均未发生严重不良反应。结论 灵芝调脂茶治疗高血压合并高脂血症疗效确切,能有效控制血脂,改善HOMA-IR,调节RAAS系统,安全性好,是值得临床广泛使用的中药制剂。 展开更多
关键词 高血压 高脂血症 灵芝调脂茶 代谢紊乱 肾素-血管紧张素-醛固酮系统
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肾素-血管紧张素系统与中枢神经系统疾病的关联及中医药的干预调控作用 被引量:1
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作者 夏师慧 李红霞 +2 位作者 张起越 林建华 张岩 《上海中医药杂志》 CSCD 2024年第6期88-94,共7页
肾素-血管紧张素系统(RAS)在水、电解质和血压动态调控中发挥重要作用。RAS组分也广泛分布在脑组织,参与多种中枢神经系统疾病的病理过程。从血管紧张素转化酶(ACE)-血管紧张素Ⅱ(AngⅡ)-血管紧张素1型受体(AT1R)、ACE2-Ang-(1-7)-Mas受... 肾素-血管紧张素系统(RAS)在水、电解质和血压动态调控中发挥重要作用。RAS组分也广泛分布在脑组织,参与多种中枢神经系统疾病的病理过程。从血管紧张素转化酶(ACE)-血管紧张素Ⅱ(AngⅡ)-血管紧张素1型受体(AT1R)、ACE2-Ang-(1-7)-Mas受体(MasR)双轴,探讨RAS与中枢神经系统疾病(阿尔茨海默病、帕金森病、抑郁症、缺血性脑卒中等)的病理机制关联,并总结分析中药及中医非药物疗法基于RAS的靶向干预途径及防治中枢神经系统疾病的效应与作用机制,为中西医结合防治中枢神经系统疾病、中药新药研发提供参考。 展开更多
关键词 阿尔茨海默病 帕金森病 脑卒中 抑郁症 肾素-血管紧张素系统 中医药疗法 作用机制
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葡萄籽原花青素提取物对心肌梗死大鼠肾素-血管紧张素系统及AQP2蛋白表达的影响 被引量:1
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作者 郭华 武报佳 +4 位作者 邢慧敏 赵睿 孙波 马冬 张丽娜 《中西医结合心脑血管病杂志》 2024年第1期62-67,共6页
目的:探讨葡萄籽原花青素提取物(GSPE)对心肌梗死大鼠肾素血管紧张素-系统及水通道蛋白2(AQP2)表达的影响。方法:将55只无特定病原体(SPF)级Sprague-Dawley(SD)大鼠按照随机数字表法分为健康组、模型组、辛伐他汀组、GSPE低剂量组及GSP... 目的:探讨葡萄籽原花青素提取物(GSPE)对心肌梗死大鼠肾素血管紧张素-系统及水通道蛋白2(AQP2)表达的影响。方法:将55只无特定病原体(SPF)级Sprague-Dawley(SD)大鼠按照随机数字表法分为健康组、模型组、辛伐他汀组、GSPE低剂量组及GSPE高剂量组,每组11只。除健康组外其余大鼠均采用冠状动脉结扎法制备心肌梗死模型,建模成功后,GSPE低剂量组、高剂量组大鼠分别灌胃100 mg/kg、400 mg/kg葡萄籽原花青素溶液,辛伐他汀组灌胃40 mg辛伐他汀溶液。苏木精-伊红(HE)染色后观察心肌组织形态;末端脱氧核苷酸转移酶介导的原位缺口末端转移酶标记法(TUNEL)检测心肌细胞凋亡;超声心动图监测心功能;放射免疫法检测血管紧张素Ⅱ(AngⅡ)、血浆肾素活性(PRA)、醛固酮水平;免疫印迹法检测心肌组织中AQP2、B细胞淋巴瘤/白血病2号基因(Bcl-2)及半胱天冬氨酸蛋白酶-3(Caspase-3)蛋白水平。结果:与健康组比较,模型组大鼠左心室收缩末期内径(LVESD)、左心室舒张末期内径(LVEDD)升高,左心室射血分数(LVEF)和左心室短轴缩短分数(LVFS)降低(P<0.05);与模型组比较,GSPE低剂量组、GSPE高剂量组及辛伐他汀组LVEDD、LVESD降低,LVEF、LVFS升高(P<0.05),GSPE低剂量组、GSPE高剂量组间比较差异有统计学意义,而GSPE高剂量组与辛伐他汀组比较差异无统计学意义(P>0.05)。与健康组比较,模型组大鼠AngⅡ、PRA、醛固酮升高(P<0.05);与模型组比较,GSPE低剂量组、GSPE高剂量组及辛伐他汀组AngⅡ、PRA、醛固酮降低(P<0.05)。健康组、模型组、GSPE低剂量组、GSPE高剂量组及辛伐他汀组的心肌细胞凋亡率分别为(5.11±0.33)%、(46.22±3.97)%、(28.46±3.77)%、(15.42±2.33)%及(16.34±2.57)%,各组比较差异有统计学意义(P<0.05)。与健康组比较,模型组大鼠心肌组织中AQP2、Caspase-3蛋白水平升高,Bcl-2蛋白水平降低(P<0.05);与模型组比较,GSPE低剂量组、GSPE高剂量组、辛代他汀组大鼠心肌组织中AQP2、Caspase-3蛋白水平降低,Bcl-2蛋白水平升高(P<0.05)。结论:GSPE对心肌梗死有保护作用,可改善心功能水平,减少心肌细胞凋亡,其作用机制可能与调控AQP2蛋白表达有关。 展开更多
关键词 心肌梗死 葡萄籽原花青素提取物 水通道蛋白2 肾素-血管紧张素系统 大鼠 实验研究
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肾素-血管紧张素系统可预测腹腔镜肾根治术后的急性肾损伤
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作者 李佳馨 刘毅 +2 位作者 刘向杰 徐龙河 刘永哲 《南方医科大学学报》 CAS CSCD 北大核心 2024年第11期2220-2226,共7页
目的分析患者围术期肾素-血管紧张素系统(RAS)的变化来探讨腹腔镜根治性肾切除术(LRN)术后急性肾损伤(AKI)的发病机制及其对AKI的预测作用。方法纳入2023年12月至2024年3月解放军总医院第三医学中心接受LRN患者82例,依据国际肾病改善全... 目的分析患者围术期肾素-血管紧张素系统(RAS)的变化来探讨腹腔镜根治性肾切除术(LRN)术后急性肾损伤(AKI)的发病机制及其对AKI的预测作用。方法纳入2023年12月至2024年3月解放军总医院第三医学中心接受LRN患者82例,依据国际肾病改善全球预后(KDIGO)标准,根据术后是否发生AKI将患者分为AKI组(n=57)和非AKI组(n=25)。在术前、术后24 h留取血液、尿液标本,检测RAS常规通路尿醛固酮,RAS非常规通路血浆血管紧张素转换酶2(ACE 2)、血管紧张素1-7(Ang 1-7)、核因子E2相关因子-2(Nrf-2)和IL-10水平,分析其与AKI发生的相关性,单因素和多因素Logistic回归分析术后AKI的危险因素,采用受试者工作特征(ROC)曲线分析其对AKI的预测价值。结果LRN术后AKI的发生率为69.5%。AKI组术后24 h尿醛固酮水平显著高于非AKI组(P=0.022),血浆ACE 2、Ang1-7、Nrf-2、IL-10水平显著低于非AKI组(P<0.05)。相关分析显示,术后24 h尿醛固酮水平与AKI成正相关(P=0.029)、与eGFR成负相关(P=0.007),血浆ACE 2、Nrf-2、IL-10水平与AKI成负相关(P<0.05)、与eGFR成正相关(P=0.029,P=0.013,P=0.008)。单因素Logistic回归分析显示,尿醛固酮是AKI发生的危险因素(OR=1.01,95%CI 1.00~1.001,P=0.026),血浆ACE2、Ang1-7、Nrf-2和IL-10是AKI发生的保护因素(OR=0.98,95%CI 0.97~0.998,P=0.030;OR=0.98,95%CI 0.96~0.998,P=0.041;OR=0.99,95%CI 0.99~0.999,P=0.023;OR=0.99,95%CI 0.97~0.999,P=0.044)。多因素Logistic回归分析显示,尿醛固酮是AKI的独立危险因素(OR=1.002,95%CI 1.000~1.004,P=0.030),血浆Nrf-2是AKI的独立保护因素(OR=0.999,95%CI 0.999~1.000,P=0.042),曲线下面积(AUC)分别为0.651和0.679;联合分析非常规通路各个指标,AUC为0.758,联合分析醛固酮和非常规通路各个指标,AUC为0.788。结论AKI患者术后24 h RAS常规通路活性增强,非常规通路活性减弱,RAS系统可能通过影响eGFR参与了AKI的发生;醛固酮联合非常规通路各指标可用于预测LRN术后AKI。 展开更多
关键词 急性肾损伤 根治性肾切除术 肾素-血管紧张素系统
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肾素血管紧张素系统在溃疡性结肠炎小鼠肠-血屏障损伤中的调控作用
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作者 张崇昊 马畅 +2 位作者 李志强 伍钢 张源淑 《畜牧兽医学报》 CAS CSCD 北大核心 2024年第4期1756-1765,共10页
本研究旨在探讨肾素血管紧张素系统(renin-angiotensin system, RAS)在溃疡性结肠炎小鼠肠-血屏障损伤中发挥的作用。选取16只ICR小鼠,随机分为正常对照组(Control组)和葡聚糖硫酸钠盐处理组(DSS组),等体积灌胃生理盐水。试验至第4天,DS... 本研究旨在探讨肾素血管紧张素系统(renin-angiotensin system, RAS)在溃疡性结肠炎小鼠肠-血屏障损伤中发挥的作用。选取16只ICR小鼠,随机分为正常对照组(Control组)和葡聚糖硫酸钠盐处理组(DSS组),等体积灌胃生理盐水。试验至第4天,DSS组小鼠在饮用水中添加DSS(终浓度为4%)制造小鼠溃疡性结肠炎模型。期间每天记录小鼠体重、粪便性状和粪便隐血情况,并计算疾病活跃指数(disease activity index, DAI)。DSS饮用至第8天,所有小鼠采血后剖检,量取结肠长度,取结肠组织等样品。进行如下试验:1)HE染色观察结肠组织病理变化;2)ELISA法检测血液中血管内皮生长因子(vascular endothelial growth factor, VEGFA)及结肠组织中Ang1-7和AngⅡ的含量;3)Western blot检测结肠组织中血管紧张素转化酶2(angiotensin-coverting enzyme 2, ACE2)、血管紧张素转化酶(ACE)和质膜膜泡关联蛋白(plasmalemma vesicle associated protein, PLVAP)的表达;4)斯皮尔曼相关性分析ACE2、ACE与PLVAP表达变化的相关性以及Ang1-7、AngⅡ和VEGFA含量变化的相关性。结果显示:1)成功建立了DSS诱导小鼠溃疡性结肠炎模型,小鼠表现为体重下降、DAI极显著升高(P<0.01)、结肠极显著缩短(P<0.01)和结肠组织出现明显的病理变化;2)与对照组相比,DSS组小鼠表现肛门明显出血,结肠组织中PLVAP和VEGFA蛋白表达均极显著升高(P<0.01);3)与对照组相比,DSS组小鼠结肠组织中ACE2和ACE表达均极显著上调(P<0.01),Ang1-7和AngⅡ含量分别显著(P<0.05)和极显著(P<0.01)升高;4)相关性分析显示,ACE2、ACE的表达变化和PLVAP表达变化呈正相关,Ang1-7、AngⅡ含量变化与VEGFA含量变化也呈正相关。以上结果表明,DSS致小鼠结肠炎症过程中小鼠结肠血管屏障受损,结肠局部RAS均处于激活状态,ACE/AngⅡ通路的激活占优势,提示:AngⅡ参与了结肠炎小鼠肠-血屏障的损伤过程。通过激活ACE2或过表达ACE2,增强其对AngⅡ的降解作用以缓解肠-血屏障的损伤,可能是治疗或缓解溃疡性结肠炎的一个新的思路或途径。 展开更多
关键词 肾素-血管紧张素系统 小鼠 溃疡性结肠炎 肠血屏障
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Renin-angiotensin system in the pathogenesis of liver fibrosis 被引量:37
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作者 Regina Maria Pereira Robson Augusto Souza dos Santos +2 位作者 Filipi Leles da Costa Dias Mauro Martins Teixeira Ana Cristina Simoes e Silva 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第21期2579-2586,共8页
Hepatic fibrosis is considered a common response to many chronic hepatic injuries. It is a multifunctional process that involves several cell types, cytokines, chemokines and growth factors leading to a disruption of ... Hepatic fibrosis is considered a common response to many chronic hepatic injuries. It is a multifunctional process that involves several cell types, cytokines, chemokines and growth factors leading to a disruption of homeostatic mechanisms that maintain the liver ecosystem. In spite of many studies regarding the development of fibrosis, the understanding of the pathogenesis remains obscure. The hepatic tissue remodeling process is highly complex, resulting from the balance between collagen degradation and synthesis. Among the many mediators that take part in this process, the components of the Renin angiotensin system (RAS) have progressively assumed an important role. Angiotensin (Ang) II acts as a profibrotic mediator and Ang-(1-7), the newly recognized RAS component, appears to exert a counter-regulatory role in liver tissue. We briefly review the liver fibrosis process and current aspects of the RAS. This review also aims to discuss some experimental evidence regarding the participation of RAS mediators in the pathogenesis of liver fibrosis, focusing on the putative role of the ACE2-Ang-(1-7)- Mas receptor axis. 展开更多
关键词 Hepatic fibrosis renin angiotensin system angiotensin II angiotensin-(1-7) Receptor Mas angiotensin converting enzyme 2
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Nonalcoholic fatty liver disease and the renin-angiotensin system:Implications for treatment 被引量:12
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作者 Paschalis Paschos Konstantinos Tziomalos 《World Journal of Hepatology》 CAS 2012年第12期327-331,共5页
Nonalcoholic fatty liver disease(NAFLD) is the commonest liver disease in Western countries.Treatment of NAFLD is currently based on lifestyle measures and no effective pharmacologic treatment is available so far.Emer... Nonalcoholic fatty liver disease(NAFLD) is the commonest liver disease in Western countries.Treatment of NAFLD is currently based on lifestyle measures and no effective pharmacologic treatment is available so far.Emerging evidence,mainly from animal studies,suggests that the renin-angiotensin-aldosterone system may be of major importance in the pathogenesis of NAFLD and indicates that angiotensin-converting enzyme inhibitors(ACE-I) and angiotensin receptor blockers(ARBs) as a potentially useful therapeutic approach.However,data from human studies are limited and contradictory.In addition,there are few randomized controlled trials(RCTs) on the effects of ACE-I or ARB in patients with NAFLD and most data are from retrospective studies,pilot prospective studies and post hoc analyses of clinical trials.Accordingly,more and larger RCTs are needed to directly assess the effectiveness of ACE-I and ARBs in NAFLD. 展开更多
关键词 NONALCOHOLIC fatty liver disease Non ALCOHOLIC STEATOHEPATITIS renin-angiotensin-aldosterone system angiotensin-converting enzyme inhibitors An-giotensin receptor BLOCKERS Fibrosis
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临床腹泻猪空肠组织中肾素-血管紧张素系统(RAS)的表达变化及与肠道炎症的关系
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作者 陈雪清 李志强 +2 位作者 吴雨龙 张崇昊 张源淑 《畜牧兽医学报》 CAS CSCD 北大核心 2024年第2期751-758,共8页
在现代生猪规模化养殖过程中,无论是断奶、换舍和换料等因素引起的应激反应还是细菌、病毒感染都极易影响消化道健康引起以腹泻为主要症状的肠道炎症。本文通过研究临床腹泻猪空肠组织中肾素-血管紧张素系统(renin-angiobensin system,R... 在现代生猪规模化养殖过程中,无论是断奶、换舍和换料等因素引起的应激反应还是细菌、病毒感染都极易影响消化道健康引起以腹泻为主要症状的肠道炎症。本文通过研究临床腹泻猪空肠组织中肾素-血管紧张素系统(renin-angiobensin system,RAS)的表达变化,探讨其与肠道炎症的关系。以临床上出现腹泻症状的保育猪为研究对象,截取其空肠组织,采用组织病理学、Western blot和RT-qPCR等方法,观察其空肠组织病理变化,明确RAS组分特别是血管紧张素转化酶2(angiotensin-converting enzyme 2,ACE2)的表达变化,探究其对猪肠道炎症损伤的影响。结果表明,临床腹泻保育猪的空肠组织中促炎性因子TNF-α、IL-1β显著升高,抗炎性因子IL-10无明显变化;组织病理学显示,空肠上皮绒毛脱落,腺体增生,存在大量出血点;ACE2、MasR mRNA和蛋白水平及Ang(1-7)含量均降低,ACE和AT1R蛋白水平及Ang II含量均升高。结果提示,临床腹泻保育猪空肠组织局部RAS被激活,ACE-Ang II-AT1R轴的活性远高于ACE2-Ang(1-7)-MasR轴,ACE2抗炎性损伤作用处于劣势。 展开更多
关键词 肾素-血管紧张素系统 保育猪 空肠 临床腹泻 肠道炎症
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What have we learned about the kallikrein-kinin and renin-angiotensin systems in neurological disorders? 被引量:7
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作者 Maria da Graa Naffah-Mazzacoratti Telma Luciana Furtado Gouveia +1 位作者 Priscila Santos Rodrigues Simōes Sandra Regina Perosa 《World Journal of Biological Chemistry》 CAS 2014年第2期130-140,共11页
The kallikrein-kinin system(KKS) is an intricate endogenous pathway involved in several physiological and pathological cascades in the brain. Due to the pathological effects of kinins in blood vessels and tissues, the... The kallikrein-kinin system(KKS) is an intricate endogenous pathway involved in several physiological and pathological cascades in the brain. Due to the pathological effects of kinins in blood vessels and tissues, their formation and degradation are tightly controlled. Their components have been related to several central nervous system diseases such as stroke, Alzheimer's disease, Parkinson's disease, multiple sclerosis, epilepsy and others. Bradykinin and its receptors(B1R and B2R) may have a role in the pathophysiology of certain central nervous system diseases. It has been suggested that kinin B1R is up-regulated in pathological conditions and has a neurodegenerative pattern, while kinin B2R is constitutive and can act as a neuroprotective factor in many neurological conditions. The renin angiotensin system(RAS) is an important blood pressure regulator and controls both sodium and water intake. AngⅡ is a potent vasoconstrictor molecule and angiotensin converting enzyme is the major enzyme responsible for its release. AngⅡ acts mainly on the AT1 receptor, with involvement in several systemic and neurological disorders. Brain RAS has been associated with physiological pathways, but is also associated with brain disorders. This review describes topics relating to the involvement of both systems in several forms of brain dysfunction and indicates components of the KKS and RAS that have been used as targets in several pharmacological approaches. 展开更多
关键词 Kallikrein-kinin system renin-angiotensin system Neurological disorders Alzheimer’ s disease EPILEPSY Parkinson’ s disease
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Calcium channel blocker monotherapy versus combination with reninangiotensin system inhibitors on the development of new-onset diabetes mellitus in hypertensive Korean patients 被引量:3
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作者 Yong Hoon Kim Ae-Young Her +16 位作者 Seung-Woon Rha Byoung Geol Choi Se Yeon Choi Jae Kyeong Byun Yoonjee Park Dong Oh Kang Won Young Jang Woohyeun Kim Woong Gil Choi Tae Soo Kang Jihun Ahn Sang-Ho Park Ji Young Park Min-Ho Lee Cheol Ung Choi Chang Gyu Park Hong Seog Seo 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2019年第6期439-447,共9页
Background In real practice, two or more antihypertensive drugs are needed to achieve target blood pressure. We investigated the comparative beneficial actions of combination therapy of renin-angiotensin system inhibi... Background In real practice, two or more antihypertensive drugs are needed to achieve target blood pressure. We investigated the comparative beneficial actions of combination therapy of renin-angiotensin system inhibitors (RASI), with calcium channel blockers (CCB) over CCB monotherapy on the development of new-onset diabetes mellitus (NODM) in Korean patients during four-year follow-up periods. Methods A total of 3208 consecutive hypertensive patients without a history of diabetes mellitus who had been prescribed CCB were retrospectively enrolled from January 2004 to December 2012. These patients were divided into the two groups according to the additional use of RASI (the RASI group, n = 1221 and the no RASI group, n = 1987). Primary endpoint was NODM, defined as a fasting blood glucose ≥ 126 mg/dL or hemoglobin A1c ≥ 6.5%. Secondary endpoint was major adverse cardiac events (MACE) defined as total death, myocardial infarction (MI) and percutaneous coronary intervention (PCI). Results After propensity score-matched (PSM) analysis, two propensity- matched groups (939 pairs, n = 1878, C-statistic = 0.743) were generated. The incidences of NODM (HR = 1.009, 95% CI: 0.700–1.452, P = 0.962), MACE (HR = 0.877, 95% CI: 0.544–1.413, P = 0.589), total death, MI, PCI were similar between the two groups after PSM during four years. Conclusions The use of RASI in addition to CCB showed comparable incidences of NODM and MACE compared to CCB monotherapy in non-diabetic hypertensive Korean patients during four-year follow-up period. However, large-scaled randomized controlled clinical trials will be required for a more definitive conclusion. 展开更多
关键词 Calcium channel BLOCKER Diabetes mellitus renin-angiotensin system INHIBITORS
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肾素-血管紧张素系统在心房颤动中的作用研究进展 被引量:2
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作者 邵宝兴 衣少雷 《山东第一医科大学(山东省医学科学院)学报》 CAS 2024年第1期38-44,共7页
心房颤动(atrial fibrillation,AF)是最常见的心律失常,是导致中风、心脏疾病和死亡的主要原因之一。虽然AF的具体机制尚不清楚,但是心房电重构和结构重构是触发AF的主要机制。多项研究表明,肾素-血管紧张素系统(renin-angiotensin syst... 心房颤动(atrial fibrillation,AF)是最常见的心律失常,是导致中风、心脏疾病和死亡的主要原因之一。虽然AF的具体机制尚不清楚,但是心房电重构和结构重构是触发AF的主要机制。多项研究表明,肾素-血管紧张素系统(renin-angiotensin system,RAS)在这种重构中起关键作用。到目前为止,抗心律失常药物和射频消融尚未成功治愈AF。因此,迫切需要一种预防策略来降低AF的发病率、死亡率和医疗费用。RAS阻断剂,包括血管紧张素转换酶抑制剂(angiotensin-converting enzyme inhibitors,ACEIs)和血管紧张素受体阻滞剂(angiotensin-receptor blockers,ARBs)是治疗心脏病的一线治疗方法,ACEIs/ARBs可改善AF患者的心脏重构,能够预防和治疗AF。本综述阐述了RAS在AF发病中的作用以及RAS阻断剂在AF一级和二级预防中的潜力,以期为AF的治疗提供更多的思路。 展开更多
关键词 肾素-血管紧张素系统 心房颤动 心房重构
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Systematic review: Renin-angiotensin system inhibitors in chemoprevention of hepatocellular carcinoma 被引量:3
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作者 Michele Barone Maria Teresa Viggiani +2 位作者 Giuseppe Losurdo Mariabeatrice Principi Alfredo Di Leo 《World Journal of Gastroenterology》 SCIE CAS 2019年第20期2524-2538,共15页
BACKGROUND Neoangiogenesis is one of the key pathogenetic mechanisms in hepatocellular carcinoma (HCC). Modulation of the renin-angiotensin system (RAS) by angiotensin-converting enzyme inhibitors (ACE-Is) and angiote... BACKGROUND Neoangiogenesis is one of the key pathogenetic mechanisms in hepatocellular carcinoma (HCC). Modulation of the renin-angiotensin system (RAS) by angiotensin-converting enzyme inhibitors (ACE-Is) and angiotensin receptor blockers (ARBs) seems to be a possible adjuvant therapy for HCC, due to the antiangiogenic and anti-fibrogenic activity of these drugs. AIM To elucidate the role of ARBs and ACE-Is in HCC. METHODS We performed an electronic search of the literature using the most accessed online databases (PubMed, Cochrane library, Scopus and Web of Science), entering the query terms "angiotensin-converting enzyme inhibitors" OR "ACE inhibitors" OR "ACE-I" AND "hepatocarcinoma*" OR "hepatocellular carcinoma;moreover "angiotensin II type 1 receptor blockers" OR "ARBs" AND "hepatocarcinoma*" OR "hepatocellular carcinoma". Eligibility criteria were:(1) prospective or retrospective clinical studies;(2) epidemiological studies;and (3) experimental studies conducted in vivo or in vitro. Abstracts, conference papers, and reviews were excluded a priori. We limited our literature search to articles published in English, in peer-reviewed journals.RESULTS Thirty-one studies were selected. Three interventional studies showed that ACEIs had a significant protective effect on HCC recurrence only when used in combination with vitamin K or branched chain aminoacids, without a significant increase in overall survival. Of six retrospective observational studies, mainly focused on overall survival, only one demonstrated a prolonged survival in the ACE-Is group, whereas the two that also evaluated tumor recurrence showed conflicting results. All experimental studies displayed beneficial effects of RAS inhibitors on hepatocarcinogenesis. Numerous experimental studies, conducted either on animals and cell cultures, demonstrated the anti-angiogenetic and antifibrotic effect of ACE-Is and ARBs, thanks to the suppression of some cytokines such as vascular endothelial growth factor, hypoxia-inducible factor-1a, transforming growth factor-beta and tumor necrosis factor alpha. All or parts of these mechanisms were demonstrated in rodents developing fewer HCC and preneoplastic lesions after receiving such drugs. CONCLUSION In humans, RAS inhibitors - alone or in combination - significantly suppressed the cumulative HCC recurrence, without prolonging patient survival, but some limitations intrinsic to these studies prompt further investigations. 展开更多
关键词 CIRRHOSIS renin angiotensin Survival Cancer prevention HEPATOCARCINOMA
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The Role for AVE0991 (MAS-Receptor Angiotensin II (1-7) Agonist) in Reducing Cisplatin-Induced Acute Kidney Injury on C57BL/6 Mice
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作者 Chris Mathew 《Journal of Biosciences and Medicines》 CAS 2023年第1期195-214,共20页
Acute Kidney Injury (AKI) is a condition that causes nephrotoxicity in kidney tissues due to cisplatin-induced cancer treatments. Hence, it is proposed in this review that AVE0991 (a MAS-receptor Angiotensin II (1-7) ... Acute Kidney Injury (AKI) is a condition that causes nephrotoxicity in kidney tissues due to cisplatin-induced cancer treatments. Hence, it is proposed in this review that AVE0991 (a MAS-receptor Angiotensin II (1-7) agonist) may reduce cisplatin-induced acute kidney injury by promoting nitric oxide production. 展开更多
关键词 CISPLATIN Acute Kidney Injury AKI Cisplatin-Induced Acute Kidney Injury NEPHROTOXICITY Renal renin angiotensin System RAS AVE0991 MAS-Receptor angiotensin II (1-7) Agonist
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泻肺利水方联合硝苯地平控释片对原发性高血压疗效、不良心血管事件及肾素-血管紧张素-醛固酮系统的影响
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作者 姚冬梅 袁先琢 柏玉顺 《临床和实验医学杂志》 2024年第8期801-805,共5页
目的 探讨泻肺利水方联合硝苯地平控释片对原发性高血压疗效、不良心血管事件及肾素-血管紧张素-醛固酮系统的影响。方法 前瞻性选择2018年1月至2022年12月滁州市中西医结合医院收治的70例原发性高血压患者作为研究对象。按照随机数字... 目的 探讨泻肺利水方联合硝苯地平控释片对原发性高血压疗效、不良心血管事件及肾素-血管紧张素-醛固酮系统的影响。方法 前瞻性选择2018年1月至2022年12月滁州市中西医结合医院收治的70例原发性高血压患者作为研究对象。按照随机数字表法将其分为对照组和观察组,每组各35例。对照组给予硝苯地平控释片,观察组在硝苯地平控释片基础上加用泻肺利水方治疗,两组患者均治疗12周。比较两组治疗效果,治疗前、治疗12周后的收缩压、舒张压水平、中医症候积分、心功能情况[舒张末期容积、收缩末期容积、射血分数、二尖瓣舒张早期与晚期血流峰值的比值(E/A)]、血浆肾性活素、血管紧张素Ⅱ、血浆醛固酮水平,并比较两组不良心血管事件及不良反应发生情况。结果 观察组的治疗总有效率为94.29%,明显高于对照组(77.14%),差异有统计学意义(P<0.05)。治疗12周后,观察组收缩压和舒张压水平分别为(124.22±10.23)、(80.24±9.89) mmHg,均低于对照组[(140.33±13.24)、(93.11±9.34) mmHg],差异均有统计学意义(P<0.05)。治疗12周后,观察组眩晕、头痛、暴躁易怒、心悸、失眠评分分别为(1.21±0.20)、(0.23±0.05)、(0.42±0.08)、(0.43±0.07)、(0.34±0.06)分,均低于对照组[(1.81±0.23)、(1.10±0.15)、(1.04±0.21)、(1.09±0.19)、(0.89±0.15)分],差异均有统计学意义(P<0.05)。治疗12周后,观察组的舒张末期容积、收缩末期容积均低于对照组,射血分数、E/A值均高于对照组,差异均有统计学意义(P<0.05)。治疗12周后,观察组血浆肾性活素、血管紧张素Ⅱ、血浆醛固酮水平分别为(3.02±0.43)μg·L^(-1)·h^(-1)、(65.23±4.89) pg/mL、(150.45±28.79) mmHg,均低于对照组[(3.89±0.65)μg·L^(-1)·h^(-1)、(79.99±7.34) pg/mL、(180.88±27.89) mmHg],差异均有统计学意义(P<0.05)。观察组总不良心血管事件发生率为2.86%,低于对照组(14.28%),但两组比较差异无统计学意义(P>0.05)。观察组总不良反应发生率为5.72%,稍高于对照组(2.86%),但两组比较差异无统计学意义(P>0.05)。结论 泻肺利水方联合硝苯地平控释片治疗可提高原发性高血压的疗效,改善中医症状评分、心功能,降低不良心血管事件发生率,其机制可能与泻肺利水方可调节肾素-血管紧张素-醛固酮系统有关。 展开更多
关键词 高血压 硝苯地平 泻肺利水方 不良心血管事件 肾素-血管紧张素-醛固酮系统
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