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Influence of Angiotensin II on α1-Adrenergic Receptors Function in Rat Aorta and Expression in Vascular Smooth Muscle Cells
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作者 Itzell Alejandrina Gallardo-Ortíz Juan Pablo de Jesús Benítez-Garrido +3 位作者 Santiago C. Sigrist-Flores Juan Javier López-Guerrero Enrique Hong Rafael Villalobos-Molina 《Journal of Biosciences and Medicines》 2024年第4期123-134,共12页
Angiotensin II (Ang II) is the main mediator of the Renin-Angiotensin-System acting on AT<sub>1</sub> and other AT receptors. It is regarded as a pleiotropic agent that induces many actions, including func... Angiotensin II (Ang II) is the main mediator of the Renin-Angiotensin-System acting on AT<sub>1</sub> and other AT receptors. It is regarded as a pleiotropic agent that induces many actions, including functioning as a growth factor, and as a contractile hormone, among others. The aim of this work was to examine the impact of Ang II on the expression and function of α<sub>1</sub>-adrenergic receptors (α<sub>1</sub>-ARs) in cultured rat aorta, and aorta-derived smooth muscle cells. Isolated Wistar rat aorta was incubated for 24 h in DMEM at 37˚C, then subjected to isometric tension and to the action of added norepinephrine, in concentration-response curves. Ang II was added (1 × 10<sup>−5</sup> M), and in some experiments, 5-Methylurapidil (α<sub>1A</sub>-AR antagonist), AH11110A (α<sub>1B</sub>-AR antagonist), or BMY-7378 (α<sub>1D</sub>-AR antagonist), were used to identify the α<sub>1</sub>-AR involved in the response. Desensitization of the contractile response to norepinephrine was observed due to incubation time, and by the Ang II action. α<sub>1D</sub>-AR was protected from desensitization by BMY-7378;while RS-100329 and prazosin partially mitigated desensitization. In another set of experiments, isolated aorta-derived smooth muscle cells were exposed to Ang II and α<sub>1</sub>-ARs proteins were evaluated. α<sub>1D</sub>-AR increased at 30 and 60 min post Ang II exposure, the α<sub>1A</sub>-AR diminished from 1 to 4 h, while α<sub>1B</sub>-AR remained unchanged over 24 h of Ang II exposure. Ang II induced an increase of α<sub>1D</sub>-AR at short times, and BMY-7378 protected α<sub>1D</sub>-AR from desensitization. 展开更多
关键词 angiotensin II α1D-AR α1-AR Expression Rat aorta Smooth Muscle Cells
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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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男性不育症患者血清及精浆IL-38、Ang-1水平与精液质量的相关性研究
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作者 邹晓静 郝燕燕 《中国性科学》 2024年第8期19-23,共5页
目的探索男性不育症患者血清及精浆中白介素-38(IL-38)、血管紧张素-1(Ang-1)表达水平,并分析其与精液质量的相关性。方法选取2021年4月至2023年4月浙江中医药大学附属温州市中医院收治的108例男性不育症患者作为研究对象,依据精液质量... 目的探索男性不育症患者血清及精浆中白介素-38(IL-38)、血管紧张素-1(Ang-1)表达水平,并分析其与精液质量的相关性。方法选取2021年4月至2023年4月浙江中医药大学附属温州市中医院收治的108例男性不育症患者作为研究对象,依据精液质量分为少弱精子组(n=61)和正常精子组(n=47)。采用Pearson法分析患者血清及精浆IL-38、Ang-1水平与精液质量的相关性。结果少弱精子组患者精液质量及精浆果糖、中性α-葡糖苷酶(NAG)表达水平低于正常精子组,精浆IL-38及Ang-1表达水平高于正常精子组(P<0.05);男性不育症患者血清及精浆IL-38、Ang-1表达水平与精液质量及精浆果糖、NAG水平呈负相关。结论男性不育症少弱精子患者血清及精浆IL-38、Ang-1水平高于正常精子患者,且IL-38、Ang-1水平与精液质量相关。 展开更多
关键词 男性不育症 白介素-38 血管紧张素-1 精浆 精液质量
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Clinical outcomes of lenvatinib plus transarterial chemoembolization with or without programmed death receptor-1 inhibitors in unresectable hepatocellular carcinoma 被引量:3
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作者 Yan-Yu Wang Xu Yang +12 位作者 Yun-Chao Wang Jun-Yu Long Hui-Shan Sun Yi-Ran Li Zi-Yu Xun Nan Zhang Jing-Nan Xue Cong Ning Jun-Wei Zhang Cheng-Pei Zhu Long-Hao Zhang Xiao-Bo Yang Hai-Tao Zhao 《World Journal of Gastroenterology》 SCIE CAS 2023年第10期1614-1626,共13页
BACKGROUND Programmed death receptor-1(PD-1)inhibitors have been approved as secondline treatment regimen in hepatocellular carcinoma(HCC),but it is still worth studying whether patients can benefit from PD-1 inhibito... BACKGROUND Programmed death receptor-1(PD-1)inhibitors have been approved as secondline treatment regimen in hepatocellular carcinoma(HCC),but it is still worth studying whether patients can benefit from PD-1 inhibitors as first-line drugs combined with targeted drugs and locoregional therapy.AIM To estimate the clinical outcome of transarterial chemoembolization(TACE)and lenvatinib plus PD-1 inhibitors for patients with unresectable HCC(uHCC).METHODS We carried out retrospective research of 65 patients with uHCC who were treated at Peking Union Medical College Hospital from September 2017 to February 2022.45 patients received the PD-1 inhibitors,lenvatinib,TACE(PD-1-Lenv-T)therapy,and 20 received the lenvatinib,TACE(Lenv-T)therapy.In terms of the dose of lenvatinib,8 mg was given orally for patients weighing less than 60 kg and 12 mg for those weighing more than 60 kg.Of the patients in the PD-1 inhibitor combination group,15 received Toripalimab,14 received Toripalimab,14 received Camrelizumab,4 received Pembrolizumab,9 received Sintilimab,and 2 received Nivolumab,1 with Tislelizumab.According to the investigators’assessment,TACE was performed every 4-6 wk when the patient had good hepatic function(Child-Pugh class A or B)until disease progression occurred.We evaluated the efficacy by the modified Response Evaluation Criteria in Solid Tumors(mRECIST criteria).We accessd the safety by the National Cancer Institute Common Terminology Criteria for Adverse Events,v 5.0.The key adverse events(AEs)after the initiation of combination therapy were observed.RESULTS Patients with uHCC who received PD-1-Lenv-T therapy(n=45)had a clearly longer overall survival than those who underwent Lenv-T therapy(n=20,26.8 vs 14.0 mo;P=0.027).The median progression-free survival time between the two treatment regimens was also measured{11.7 mo[95%confidence interval(CI):7.7-15.7]in the PD-1-Lenv-T group vs 8.5 mo(95%CI:3.0-13.9)in the Lenv-T group(P=0.028)}.The objective response rates of the PD-1-Lenv-T group and Lenv-T group were 44.4%and 20%(P=0.059)according to the mRECIST criteria,meanwhile the disease control rates were 93.3%and 64.0%(P=0.003),respectively.The type and frequency of AEs showed little distinction between patients received the two treatment regimens.CONCLUSION Our results suggest that the early combination of PD-1 inhibitors has manageable toxicity and hopeful efficacy in patients with uHCC. 展开更多
关键词 Lenvatinib Programmed death receptor-1 inhibitor IMMUNOTHERAPY Hepatocellular carcinoma Transarterial chemoembolization Combination therapy
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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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Angiotensin-converting enzyme 2 alleviates liver fibrosis through the renin-angiotensin system 被引量:1
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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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MicroRNA-155 mediates endogenous angiotensin II type 1 receptor regulation:implications for innovative type 2 diabetes mellitus management
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作者 Konstantinos I Papadopoulos Alexandra Papadopoulou Tar-Choon Aw 《World Journal of Diabetes》 SCIE 2023年第9期1334-1340,共7页
Type 2 diabetes mellitus(T2DM)is a lifelong condition and a threat to human health.Thorough understanding of its pathogenesis is acutely needed in order to devise innovative,preventative,and potentially curative pharm... Type 2 diabetes mellitus(T2DM)is a lifelong condition and a threat to human health.Thorough understanding of its pathogenesis is acutely needed in order to devise innovative,preventative,and potentially curative pharmacological interventions.MicroRNAs(miRNA),are small,non-coding,one-stranded RNA molecules,that can target and silence around 60%of all human genes through translational repression.MiR-155 is an ancient,evolutionarily well-conserved miRNA,with distinct expression profiles and multifunctionality,and a target repertoire of over 241 genes involved in numerous physiological and pathological processes including hematopoietic lineage differentiation,immunity,inflammation,viral infections,cancer,cardiovascular conditions,and particularly diabetes mellitus.MiR-155 Levels are progressively reduced in aging,obesity,sarcopenia,and T2DM.Thus,the loss of coordinated repression of multiple miR-155 targets acting as negative regulators,such as C/EBPβ,HDAC4,and SOCS1 impacts insulin signaling,deteriorating glucose homeostasis,and causing insulin resistance(IR).Moreover,deranged regulation of the renin angiotensin aldosterone system(RAAS)through loss of Angiotensin II Type 1 receptor downregulation,and negated repression of ETS-1,results in unopposed detrimental Angiotensin II effects,further promoting IR.Finally,loss of BACH1 and SOCS1 repression abolishes cytoprotective,anti-oxidant,anti-apoptotic,and anti-inflam matory cellular pathways,and promotesβ-cell loss.In contrast to RAAS inhibitor treatments that further decrease already reduced miR-155 Levels,strategies to increase an ailing miR-155 production in T2DM,e.g.,the use of metformin,mineralocorticoid receptor blockers(spironolactone,eplerenone,finerenone),and verapamil,alone or in various combinations,represent current treatment options.In the future,direct tissue delivery of miRNA analogs is likely. 展开更多
关键词 angiotensin II angiotensin II type 1 receptor Arginase 2 L-type calcium channel Mineralocorticoid receptor MiRNA-155 Renin-angiotensin aldosterone system Type 1/2 diabetes mellitus VERAPAMIL
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SIRT1在糖尿病心肌病发病中的研究进展 被引量:1
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作者 解有成 王菲 +1 位作者 徐进 于晓辉 《天津医药》 CAS 2024年第4期443-448,共6页
糖尿病心肌病(DCM)是糖尿病患者的一种严重的心血管并发症。去乙酰化酶沉默信息调节因子2同源物1(SIRT1)作为机体重要的细胞内调控蛋白,在许多生物过程中发挥重要作用,包括减轻心肌细胞氧化应激、维持心肌线粒体Ca^(2+)稳态、降低心肌... 糖尿病心肌病(DCM)是糖尿病患者的一种严重的心血管并发症。去乙酰化酶沉默信息调节因子2同源物1(SIRT1)作为机体重要的细胞内调控蛋白,在许多生物过程中发挥重要作用,包括减轻心肌细胞氧化应激、维持心肌线粒体Ca^(2+)稳态、降低心肌内质网应激、改善心肌线粒体功能障碍以及抑制机体肾素-血管紧张素-醛固酮系统的活化等,可能是DCM的潜在治疗靶点,靶向SIRT1进行深入研究能够为DCM的临床治疗提供新的理论依据。就SIRT1在DCM的发病机制中的具体作用及治疗策略进行综述。 展开更多
关键词 糖尿病 糖尿病心肌病 抗衰老酶1 氧化性应激 线粒体 内质网应激 肾素-血管紧张素-醛固酮系统
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ACE2-Ang(1-7)-MasR轴对心血管系统保护作用的研究进展
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作者 郑梦迪 王治 《中国心血管病研究》 CAS 2024年第6期517-521,共5页
肾素-血管紧张素系统(RAS)是人体重要的体液调节系统之一,在维持机体血压稳定和水电解质平衡中发挥了重要作用。近年来,发现了RAS系统的新支路,ACE2和Ang(1-7)等是心血管系统的关键保护因子,ACE2-Ang(1-7)-MasR轴成为了心血管疾病领域... 肾素-血管紧张素系统(RAS)是人体重要的体液调节系统之一,在维持机体血压稳定和水电解质平衡中发挥了重要作用。近年来,发现了RAS系统的新支路,ACE2和Ang(1-7)等是心血管系统的关键保护因子,ACE2-Ang(1-7)-MasR轴成为了心血管疾病领域的研究热点。非经典的RAS系统ACE2-Ang(1-7)-MasR轴能够拮抗经典的ACE-AngⅡ-AT1R轴,二者共同维系机体的平衡,该轴在高血压、冠心病、心律失常和心力衰竭等心血管疾病治疗中可能成为新的治疗靶点。 展开更多
关键词 肾素-血管紧张素系统 血管紧张素转换酶2 血管紧张素(1-7) 血管紧张素(1-9) AT2受体 心肾综合征 MAS受体
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Argatroban promotes recovery of spinal cord injury by inhibiting the PAR1/JAK2/STAT3 signaling pathway
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作者 Chenxi Zhao Tiangang Zhou +9 位作者 Ming Li Jie Liu Xiaoqing Zhao Yilin Pang Xinjie Liu Jiawei Zhang Lei Ma Wenxiang Li Xue Yao Shiqing Feng 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第2期434-439,共6页
Argatroban is a synthetic thrombin inhibitor approved by U.S.Food and Drug Administration for the treatment of thrombosis.However,whether it plays a role in the repair of spinal cord injury is unknown.In this study,we... Argatroban is a synthetic thrombin inhibitor approved by U.S.Food and Drug Administration for the treatment of thrombosis.However,whether it plays a role in the repair of spinal cord injury is unknown.In this study,we established a rat model of T10 moderate spinal cord injury using an NYU Impactor ModerⅢand performed intraperitoneal injection of argatroban for 3 consecutive days.Our results showed that argatroban effectively promoted neurological function recovery after spinal cord injury and decreased thrombin expression and activity in the local injured spinal cord.RNA sequencing transcriptomic analysis revealed that the differentially expressed genes in the argatroban-treated group were enriched in the JAK2/STAT3 pathway,which is involved in astrogliosis and glial scar formation.Western blotting and immunofluorescence results showed that argatroban downregulated the expression of the thrombin receptor PAR1 in the injured spinal cord and the JAK2/STAT3 signal pathway.Argatroban also inhibited the activation and proliferation of astrocytes and reduced glial scar formation in the spinal cord.Taken together,these findings suggest that argatroban may inhibit astrogliosis by inhibiting the thrombin-mediated PAR1/JAK2/STAT3 signal pathway,thereby promoting the recovery of neurological function after spinal cord injury. 展开更多
关键词 ARGATROBAN ASTROGLIOSIS JAK/STAT signaling pathway protease-activated receptor-1 spinal cord injury THROMBIN vimentin
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妊娠高血压患者血管紧张素Ⅱ及AT1R、AT2R的表达及意义
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作者 董在婷 熊琼英 《中国社区医师》 2024年第16期98-100,共3页
目的:探讨妊娠高血压(HDCP)患者血管紧张素Ⅱ(AngⅡ)及AngⅡ受体-1(AT1R)和AngⅡ受体-2(AT2R)的表达及意义。方法:选取2021年1月—2022月年9月孝感市中心医院收治的90例HDCP患者作为观察组,并将观察组根据病情程度分为HDCP组、轻度子痫... 目的:探讨妊娠高血压(HDCP)患者血管紧张素Ⅱ(AngⅡ)及AngⅡ受体-1(AT1R)和AngⅡ受体-2(AT2R)的表达及意义。方法:选取2021年1月—2022月年9月孝感市中心医院收治的90例HDCP患者作为观察组,并将观察组根据病情程度分为HDCP组、轻度子痫前期组和重度子痫前期组3个亚组,将同期产检的90例健康孕妇作为对照组。检测并比较观察组与对照组、观察组不同亚组AngⅡ水平、AT1R和AT2R阳性表达情况。结果:观察组产前母血、产后脐血AngⅡ水平低于对照组,产后母血AngⅡ水平、AT1R、AT2R总阳性率高于对照组,差异有统计学意义(P<0.05)。不同病情程度HDCP患者产前母血、产后脐血AngⅡ水平比较,HDCP组>轻度子痫前期组>重度子痫前期组;不同病情程度HDCP患者产后母血AngⅡ水平比较,HDCP组<轻度子痫前期组<重度子痫前期组;不同病情程度HDCP患者AT1R、AT2R阳性情况比较,HDCP组<轻度子痫前期组<重度子痫前期组,差异有统计学意义(P<0.05)。结论:HDCP患者母血、脐血AngⅡ存在异常表达,其AT1R、AT2R阳性率随病情加重而升高,检测上述指标有助于为HDCP发病机制、早期诊断与治疗提供参考。 展开更多
关键词 妊娠高血压 血管紧张素Ⅱ 血管紧张素Ⅱ受体-1 血管紧张素Ⅱ受体-2
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芹菜素调控Caveolin-1对慢性心力衰竭大鼠血管紧张素1-7及左室舒张功能的影响
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作者 俞志军 张桂娟 +2 位作者 陈丽新 杨森林 崔玉祥 《中西医结合心脑血管病杂志》 2024年第9期1591-1596,共6页
目的:探讨芹菜素通过调控窖蛋白-1(Caveolin-1)对慢性心力衰竭(CHF)大鼠血管紧张素1-7(Ang1-7)及左室舒张功能的机制研究。方法:按照随机数字表法将大鼠分为假手术(Sham)组、CHF组、芹菜素组、Caveolin-1组及联合组,每组10只,除Sham组... 目的:探讨芹菜素通过调控窖蛋白-1(Caveolin-1)对慢性心力衰竭(CHF)大鼠血管紧张素1-7(Ang1-7)及左室舒张功能的机制研究。方法:按照随机数字表法将大鼠分为假手术(Sham)组、CHF组、芹菜素组、Caveolin-1组及联合组,每组10只,除Sham组外均建立CHF大鼠模型。建模后24 h,芹菜素组大鼠腹腔注射2 mg/kg的芹菜素,Caveolin-1组腹腔注射1.2 mg/kg的Caveolin-1质粒的脂质体溶液,联合组大鼠腹腔注射2 mg/kg的芹菜素及1.2 mg/kg的Caveolin-1质粒的脂质体溶液,Sham组及CHF组大鼠腹腔注射等体积生理盐水。比较各组大鼠心脏收缩及舒张功能指标、血清因子水平;苏木精-伊红(HE)染色检测心肌组织病理形态;电镜观察心房超微结构;免疫组化检测心肌组织血管生成情况;蛋白免疫印迹检测心肌组织Caveolin-1、缺氧诱导因子1(HIF-1)、血管内皮生长因子(VEGF)蛋白水平。结果:CHF组与Sham组比较,大鼠左心室射血分数(LVEF)、左心室短轴缩短率(LVFS)、Ang1-7及Caveolin-1蛋白、HIF-1蛋白、VEGF蛋白降低,左心室舒张末期内径(LVEDD)、左心室收缩末期内径(LVESD)、左心室舒张末期容积(LVEDV)、左心室收缩末期容积(LVESV)、血管紧张素Ⅱ(AngⅡ)、醛固酮(ALD)、肾素活性(PRA)升高,差异有统计学意义(P<0.05);芹菜素组、Caveolin-1组与CHF组比较,大鼠LVEF、LVFS、Ang1-7、Caveolin-1蛋白、HIF-1蛋白、VEGF蛋白及血管数目升高,LVESD、LVEDD、LVEDV、LVESV、AngⅡ、ALD、PRA降低,差异有统计学意义(P<0.05);芹菜素组与Caveolin-1组各指标比较,差异均无统计学意义(P>0.05);联合组与芹菜素组及Caveolin-1组各指标比较,差异均有统计学意义(P<0.05)。结论:芹菜素对慢性心力衰竭大鼠心脏舒张及收缩功能具有改善作用,并可通过上调Ang1-7改善心肌重塑从而保护心脏,其机制可能与激活Caveolin-1表达而增加心肌新生血管相关。 展开更多
关键词 慢性心力衰竭 芹菜素 心功能 血管紧张素1-7 窖蛋白-1
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血清多配体蛋白聚糖1、血管紧张素转换酶2与川崎病患儿冠状动脉损害和临床疗效的关系
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作者 王从贵 彭海琳 熊伟 《广东医学》 CAS 2024年第6期666-671,共6页
目的研究血清多配体蛋白聚糖1(syndecan-1,SDC-1)、血管紧张素转换酶2(angiotensin-converting enzyme 2,ACE2)与川崎病(Kawasaki disease,KD)患儿冠状动脉损害(coronary artery lesions,CAL)和临床疗效的关系。方法选取2020年6月至2022... 目的研究血清多配体蛋白聚糖1(syndecan-1,SDC-1)、血管紧张素转换酶2(angiotensin-converting enzyme 2,ACE2)与川崎病(Kawasaki disease,KD)患儿冠状动脉损害(coronary artery lesions,CAL)和临床疗效的关系。方法选取2020年6月至2022年3月收治的113例KD急性期患儿作为研究对象并设为KD组,治疗前行超声心动图检查,根据检查结果分为CAL组(n=39例)和无CAL组(n=74例);另选取同期体检的60例健康儿童作为对照组。收集受试者临床资料,采用酶联免疫吸附法检测血清SDC-1、ACE2水平并比较。患儿治疗后进行疗效评估,将治愈与好转患儿纳入治疗有效组(n=89例),无效患儿纳入治疗无效组(n=24例)。采用多因素logistic回归模型分析患儿治疗无效的影响因素,受试者工作特征(ROC)曲线分析血清SDC-1、ACE2等指标及其联合应用模型对治疗无效的预测价值。结果KD组血清SDC-1、ACE2水平显著高于对照组(P<0.05)。CAL组血清SDC-1、ACE2水平高于无CAL组(P<0.05)。治疗有效组与治疗无效组在发热时间、降钙素原(procalcitonin,PCT)、C反应蛋白(C-reactive protein,CRP)、白细胞介素6(interleukin-6,IL-6)、SDC-1、ACE2水平方面比较差异有统计学意义(P<0.05)。多因素logistic回归分析显示:PCT、CRP、IL-6、SDC-1、ACE2为患儿治疗无效的显著影响因素(P<0.05)。ROC曲线分析显示:血清SDC-1、ACE2两指标联合预测患儿治疗无效的曲线下面积(AUC)(95%CI)为0.837(0.726~0.926),预测价值均高于单独检测。血清SDC-1、ACE2及PCT、CRP、IL-6联合预测患儿治疗无效的AUC(95%CI)为0.903(0.861~0.912),预测价值较血清SDC-1、ACE2两指标联合预测有所提升。结论KD患儿血清SDC-1、ACE2水平上升,两者水平越高,其并发CAL风险越高,临床疗效越差,联合检测对临床疗效具有较好的预测价值。 展开更多
关键词 川崎病 多配体蛋白聚糖1 血管紧张素转换酶2 冠状动脉损害 疗效 预测价值
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Angiotensin-(1-7)对血管平滑肌细胞钙化的影响及信号转导通路 被引量:2
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作者 何文 冯霞 +2 位作者 马虹 张焰 彭龙云 《中国病理生理杂志》 CAS CSCD 北大核心 2007年第11期2126-2131,共6页
目的:在钙化大鼠主动脉血管平滑肌细胞上观察血管紧张素-(1-7)[Angiotensin-(1-7)]对钙化的影响及其信号通道。方法:用β-磷酸甘油制备钙化的大鼠血管平滑肌细胞,再以血管紧张素-(1-7)、血管紧张素Ⅱ、血管紧张素Ⅱ+血管紧张素-(1-7)、... 目的:在钙化大鼠主动脉血管平滑肌细胞上观察血管紧张素-(1-7)[Angiotensin-(1-7)]对钙化的影响及其信号通道。方法:用β-磷酸甘油制备钙化的大鼠血管平滑肌细胞,再以血管紧张素-(1-7)、血管紧张素Ⅱ、血管紧张素Ⅱ+血管紧张素-(1-7)、选择性蛋白激酶A(PKA)或蛋白激酶C(PKC)抑制剂等干预,通过Von Kossa染色及检测钙含量、碱性磷酸酶活性、骨钙素浓度和Cbfa1 mRNA表达来探讨血管紧张素Ⅱ对钙化的影响及其信号通道。结果:血管紧张素-(1-7)抑制钙化大鼠血管平滑肌细胞的钙含量、碱性磷酸酶活性(P>0.05)、骨钙素浓度和Cbfa1 mRNA表达(P<0.05),也抑制血管紧张素Ⅱ对血管平滑肌细胞的钙含量、碱性磷酸酶活性、骨钙素浓度和Cbfa1 mRNA表达的促进作用(P<0.05);血管紧张素-(1-7)提高血管平滑肌细胞内cAMP浓度(P<0.05),PKA抑制剂可阻断血管紧张素-(1-7)对钙化血管平滑肌细胞的钙含量、碱性磷酸酶活性、骨钙素浓度和Cbfa1 mRNA表达的抑制作用(P<0.05)。结论:血管紧张素-(1-7)可抑制β-磷酸甘油诱导的血管平滑肌细胞钙化,并拮抗血管紧张素Ⅱ促进的血管平滑肌细胞钙化;这些效应与cAMP-PKA-Cbfa1信号途径有关。 展开更多
关键词 血管紧张素-(1-7) 钙化 血管平滑肌细胞 信号转导
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血管紧张素(1-7)激活自噬调控口腔黏膜下纤维性变细胞凋亡与血管生成的研究 被引量:1
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作者 邱乐宏 邓伟 +1 位作者 甘成文 孙莹 《安徽医科大学学报》 CAS 北大核心 2023年第3期457-464,共8页
目的体外观察血管紧张素(1-7)[Ang(1-7)]对口腔黏膜下纤维性变(OSF)成纤维细胞凋亡与血管生成的影响,并初步探究作用机制。方法从人颊黏膜组织分离培养成纤维细胞,倒置显微镜观察细胞形态,免疫荧光染色检测波形蛋白(Vimentin)表达;以槟... 目的体外观察血管紧张素(1-7)[Ang(1-7)]对口腔黏膜下纤维性变(OSF)成纤维细胞凋亡与血管生成的影响,并初步探究作用机制。方法从人颊黏膜组织分离培养成纤维细胞,倒置显微镜观察细胞形态,免疫荧光染色检测波形蛋白(Vimentin)表达;以槟榔提取液(ANE)诱导人成纤维细胞模拟OSF内成纤维细胞体外模型,实验分组包括对照组(正常培养的细胞)、ANE组[100μg/ml ANE培养细胞48 h、ANE+低剂量Ang(1-7)组(100μg/ml ANE+10^(-7)mol/L Ang(1-7)培养细胞48 h]、ANE+高剂量Ang(1-7)组[100μg/ml ANE+10^(-5)mol/L Ang(1-7)培养细胞48 h],免疫荧光染色检测α-平滑肌肌动蛋白(α-SMA)表达,ELISA法检测细胞培养上清液中Ⅰ型胶原(CollagenⅠ)和Ⅲ型胶原(CollagenⅢ)的含量,MTT法检测细胞增殖活性,流式细胞术检测细胞凋亡,小管形成实验检测人脐静脉内皮细胞(HUVEC)的血管形成情况,将mRFP-GFP-LC3病毒转染至细胞后通过免疫荧光染色检测细胞自噬水平,Western blot检测自噬相关蛋白Beclin-1表达及LC3-Ⅱ/LC3-Ⅰ比值。结果分离培养的细胞呈长梭形,Vimentin呈阳性表达,说明成功分离到成纤维细胞;与ANE组比较,ANE+低剂量Ang(1-7)组和ANE+高剂量Ang(1-7)组的细胞内α-SMA蛋白荧光表达明显减弱,培养上清液中Collagen Ⅰ和Collagen Ⅲ的含量减少(P<0.05),细胞增殖活性降低(P<0.05),细胞凋亡率则升高(P<0.05),两组的细胞培养上清液均抑制了HUVEC的血管形成(P<0.05),细胞内自噬小体减少(P<0.05),Beclin-1蛋白表达降低(P<0.05),LC3-Ⅱ/LC3-Ⅰ比值下调(P<0.05);此外,ANE+高剂量Ang(1-7)组作用效果均强于ANE+低剂量Ang(1-7)组作用效果(P<0.05)。结论Ang(1-7)能够抑制ANE诱导下成纤维细胞的活化,促进细胞凋亡,并降低HUVEC的血管形成。该机制可能与调控细胞自噬水平有关。 展开更多
关键词 口腔黏膜下纤维性变 成纤维细胞 血管紧张素(1-7) 凋亡 自噬 血管生成
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Effect of angiotensin Ⅱ type 1 receptor blocker and angiotensin converting enzyme inhibitor on the intraocular growth factors and their receptors in streptozotocin-induced diabetic rats 被引量:5
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作者 Ik Soo Byon Dong Hyun Lee +3 位作者 Eun Sook Jun Min Kyu Shin Sung Who Park Ji Eun Lee 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2017年第6期896-901,共6页
AIM: To investigate the effect of angiotensin II type 1 receptor blocker (ARB) and angiotensin converting enzyme inhibitor (ACEI) on intraocular growth factors and their receptors in streptozotocin-induced diabet... AIM: To investigate the effect of angiotensin II type 1 receptor blocker (ARB) and angiotensin converting enzyme inhibitor (ACEI) on intraocular growth factors and their receptors in streptozotocin-induced diabetic rats. METHODS: Forty Sprague-Dawley rats were divided into 4 groups: control, diabetes mellitus (DM), candesartan- treated DM, and enalapril-treated DM (each group, n---10). After the induction of DM by streptozotocin, candesartan [ARB, 5 mg/(kg · d)] and enalapril [ACEI, 10 mg/(kg · d)] were administered to rats orally for 4Wko Vascular endothelial growth factor (VEGF) and angiotensin II (Ang II) concentrations in the vitreous were measured using enzyme-linked immunosorbent assays, and VEGF receptor 2 and angiotensin II type 1 receptor (ATIR) levels were assessed at week 4 by Western blotting. RESULTS: Vitreous Ang II levels were significantly higher in the DM group and candesartan-treated DM group than in the control (P=0.04 and 0.005, respectively). Vitreous ATIR increased significantly in DM compared to the other three groups (P〈0.007). Candesartan-treated DM rats showed higher vitreal ATIR concentration than the enalapril-treated DM group and control (P〈0.001 and P=0.005, respectively). No difference in vitreous Ang II and ATIR concentration was found between the enalapril- treated DM group and control. VEGF and its receptor were below the minimum detection limit in all 4 groups. CONCLUSION: Increased Ang II and ATIR in the hyperglycemic state indicate activated the intraocular renin-angiotensin system, which is inhibited more effectively by systemic ACEI than systemic ARB. 展开更多
关键词 angiotensin converting enzyme inhibitor angiotensin II type 1 receptor blocker diabetic rat intraocularrenin-angiotensin system
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Effect of nuclear factor-κB and angiotensin Ⅱ receptor type 1 on the pathogenesis of rat non-alcoholic fatty liver disease 被引量:3
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作者 Dao-Yu Tan Hai-Yan Shi +2 位作者 Chang-Ping Li Xiao-Ling Zhong Ming Kang 《World Journal of Gastroenterology》 SCIE CAS 2015年第19期5877-5883,共7页
AIM: To investigate the roles of nuclear factor(NF)-κB and angiotensin Ⅱ receptor type 1(AT1R) in the pathogenesis of non-alcoholic fatty liver disease(NAFLD).METHODS: Forty-two healthy adult male SpragueDawley rats... AIM: To investigate the roles of nuclear factor(NF)-κB and angiotensin Ⅱ receptor type 1(AT1R) in the pathogenesis of non-alcoholic fatty liver disease(NAFLD).METHODS: Forty-two healthy adult male SpragueDawley rats were randomly divided into three groups:the control group(normal diet), the model group,and the intervention group(10 wk of a high-fat diet feeding, followed by an intraperitoneal injection of PDTC); 6 rats in each group were sacrificed at 6, 10,and 14 wk. After sacrifice, liver tissue was taken,paraffin sections of liver tissue specimens were prepared, hematoxylin and eosin(HE) staining was performed, and pathological changes in liver tissue(i.e., liver fibrosis) were observed by light microscopy.NF-κB expression in liver tissue was detected by immunohistochemistry, and the expression of AT1 R in the liver tissue was detected by reverse transcriptionpolymerase chain reaction(RT-PCR). The data are expressed as mean ± SD. A two-sample t test was used to compare the control group and the model group at different time points, paired t tests were used to compare the differences between the intervention group and the model group, and analysis of variance was used to compare the model group with the control group. Homogeneity of variance was analyzed with single factor analysis of variance. H variance analysis was used to compare the variance. P < 0.05 wasconsidered statistically significant.RESULTS: The NAFLD model was successful after 6wk and 10 wk. Liver fibrosis was found in four rats in the model group, but in only one rat in the intervention group at 14 wk. Liver steatosis, inflammation, and fibrosis were gradually increased throughout the model. In the intervention group, the body mass,rat liver index, serum lipid, and transaminase levels were not increased compared to the model group.In the model group, the degree of liver steatosis was increased at 6, 10, and 14 wk, and was significantly higher than in the control group(P < 0.01). In the model group, different degrees of liver cell necrosis were visible and small leaves, punctated inflammation,focal necrosis, and obvious ballooning degeneration were observed. Partial necrosis and confluent necrosis were observed. In the model group, liver inflammatory activity scores at 6, 10, and 14 wk were higher than in the control group(P < 0.01). Active inflammation in liver tissue in the intervention group was lower than in the model group(P < 0.05). HE staining showed liver fibrosis only at 14 wk in 4/6 rats in the model group and in 1/6 rats in the intervention group. NF-κB positive cells were stained yellow or ensemble yellow,and NF-κB was localized in the cytoplasm and/or nucleus. The model group showed NF-κB activation at6, 10, and 14 wk in liver cells; at the same time points,there were statistically significant differences in the control group(P < 0.01). Over time, NF-κB expression increased; this was statistically lower(P < 0.05) at14 weeks in the intervention group compared to the model group, but significantly increased(P < 0.05)compared with the control group; RT-PCR showed that AT1 R mRNA expression increased gradually in the model group; at 14 wk, the expression was significantly different compared with expression at 10 weeks as well as at 6 weeks(P < 0.05). In the model group, AT1 R mRNA expression was significantly higher than at the same time point in the control group(P <0.01).CONCLUSION: With increasing severity of NAFLD,NF-κB activity is enhanced, and the inhibition of NF-κB activity may reduce AT1 R mRNA expression in NAFLD. 展开更多
关键词 Non-alcoholic FATTY liver disease Nuclearfactor-κB angiotensin RECEPTOR TYPE 1 Rats Liverfibrosis
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Relationship between angiotensin-(1-7) and angiotensin Ⅱ correlates with hemodynamic changes in human liver cirrhosis 被引量:11
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作者 Walkíria Wingester Vilas-Boas Antnio Ribeiro-Oliveira Jr +5 位作者 Regina Maria Pereira Renata da Cunha Ribeiro Jerusa Almeida Ana Paula Nadu Ana Cristina Simoes e Silva Robson Augusto Souza dos Santos 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第20期2512-2519,共8页
AIM: To measure circulating angiotensins at different stages of human cirrhosis and to further evaluate a possible relationship between renin angiotensin system (RAS) components and hemodynamic changes. METHODS: P... AIM: To measure circulating angiotensins at different stages of human cirrhosis and to further evaluate a possible relationship between renin angiotensin system (RAS) components and hemodynamic changes. METHODS: Patients were allocated into 4 groups: mild-to-moderate liver disease (MLD), advanced liver disease (ALD), patients undergoing liver transplantation, and healthy controls. Blood was collected to determine plasma renin activity (PRA), angiotensin (Ang) Ⅰ, Ang Ⅱ, and Ang-(1-7) levels using radioimmunoassays. During liver transplantation, hemodynamic parameters were determined and blood was simultaneously obtained from the portal vein and radial artery in order to measure RAS components. RESULTS: PRA and angiotensins were elevated in ALD when compared to MLD and controls (P 〈 0.05). In contrast, Ang Ⅱ was significantly reduced in MLD. Ang-(1-7)/Ang Ⅱ ratios were increased in MLD when compared to controls and ALD. During transplantation, Ang Ⅱ levels were lower and Ang-(1-7)/Ang Ⅱ ratios were higher in the splanchnic circulation than in the peripheral circulation (0.52 ± 0.08 vs 0.38 ±0.04, P 〈 0.02), whereas the peripheral circulating Ang Ⅱ/Ang Ⅰ ratio was elevated in comparison to splanchnic levels (0.18 ±0.02 vs 0.13 ±0.02, P 〈 0.04). Ang-(1-7)/ Ang Ⅱ ratios positively correlated with cardiac output (r = 0.66) and negatively correlated with systemic vascular resistance (r = -0.70). CONCLUSION: Our findings suggest that the relationship between Ang-(1-7) and Ang Ⅱ may play a role in the hemodynamic changes of human cirrhosis. 展开更多
关键词 Renin-angiotensin system Liver cirrhosis angiotensin-(1-7) angiotensin Splanchnic circulation angiotensin converting enzyme 2
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Angiotensin receptor blocker drugs and inhibition of adrenal beta-arrestin-1-dependent aldosterone production: Implications for heart failure therapy 被引量:12
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作者 Anastasios Lymperopoulos Beatrix Aukszi 《World Journal of Cardiology》 CAS 2017年第3期200-206,共7页
Aldosterone mediates many of the physiological and pathophysiological/cardio-toxic effects of angiotensin II(Ang II). Its synthesis and secretion from the zona glomerulosa cells of the adrenal cortex, elevated in chro... Aldosterone mediates many of the physiological and pathophysiological/cardio-toxic effects of angiotensin II(Ang II). Its synthesis and secretion from the zona glomerulosa cells of the adrenal cortex, elevated in chronic heart failure(HF), is induced by Ang II type 1 receptors(AT1Rs). The AT1R is a G protein-coupled receptor, mainly coupling to Gq/11 proteins. However, it can also signal through β-arrestin-1(βarr1) or-2(βarr2), both of which mediate G protein-independent signaling. Over the past decade, a second, Gq/11 proteinindependent but βarr1-dependent signaling pathway emanating from the adrenocortical AT1R and leading to aldosterone production has become appreciated. Thus, it became apparent that AT1R antagonists that block both pathways equally well are warranted for fully effective aldosterone suppression in HF. This spurred the comparison of all of the currently marketed angiotensin receptor blockers(ARBs, AT1R antagonists or sartans) at blocking activation of the two signaling modes(G protein-, and βarr1-dependent) at the Ang IIactivated AT1R and hence, at suppression of aldosterone in vitro and in vivo. Although all agents are very potent inhibitors of G protein activation at the AT1R, candesartan and valsartan were uncovered to be the most potent ARBs at blocking βarr activation by Ang II and at suppressing aldosterone in vitro and in vivo in post-myocardial infarction HF animals. In contrast, irbesartan and losartan are virtually G protein-"biased" blockers at the human AT1R, with very low efficacy for βarr inhibition and aldosterone suppression. Therefore, candesartan and valsartan(and other, structurally similar compounds) may be the most preferred ARB agents for HF pharmacotherapy, as well as for treatment of other conditions characterized by elevated aldosterone. 展开更多
关键词 Adrenal cortex Adrenocortical zona glomeru losa cell ALDOSTERONE angiotensin receptor blocker angiotensin II type 1 receptor β-arrestin-1 Heart failure Suppression efficacy
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Gasdermin D-mediated hepatocyte pyroptosis expands inflammatory responses that aggravate acute liver failure by upregulating monocyte chemotactic protein 1/CC chemokine receptor-2 to recruit macrophages 被引量:10
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作者 Hong Li Xue-Ke Zhao +9 位作者 Yi-Ju Cheng Quan Zhang Jun Wu Shuang Lu Wei Zhang Yang Liu Ming-Yu Zhou Ya Wang Jing Yang Ming-Liang Cheng 《World Journal of Gastroenterology》 SCIE CAS 2019年第44期6527-6540,共14页
BACKGROUND Massive hepatocyte death is the core event in acute liver failure(ALF).Gasdermin D(GSDMD)-mediated pyroptosis is a type of highly inflammatory cell death.However,the role of hepatocyte pyroptosis and its me... BACKGROUND Massive hepatocyte death is the core event in acute liver failure(ALF).Gasdermin D(GSDMD)-mediated pyroptosis is a type of highly inflammatory cell death.However,the role of hepatocyte pyroptosis and its mechanisms of expanding inflammatory responses in ALF are unclear.AIM To investigate the role and mechanisms of GSDMD-mediated hepatocyte pyroptosis through in vitro and in vivo experiments.METHODS The expression of pyroptosis pathway-associated proteins in liver tissues from ALF patients and a hepatocyte injury model was examined by Western blot.GSDMD short hairpin RNA(shRNA)was used to investigate the effects of downregulation of GSDMD on monocyte chemotactic protein 1(MCP1)and its receptor CC chemokine receptor-2(CCR2)in vitro.For in vivo experiments,we used GSDMD knockout mice to investigate the role and mechanism of GSDMD in a D-galactose/lipopolysaccharide(D-Galn/LPS)-induced ALF mouse model.RESULTS The levels of pyroptosis pathway-associated proteins in liver tissue from ALF patients and a hepatocyte injury model increased significantly.The level of GSDMD-N protein increased most obviously(P<0.001).In vitro,downregulation of GSDMD by shRNA decreased the cell inhibition rate and the levels of MCP1/CCR2 proteins(P<0.01).In vivo,GSDMD knockout dramatically eliminated inflammatory damage in the liver and improved the survival of DGaln/LPS-induced ALF mice(P<0.001).Unlike the mechanism of immune cell pyroptosis that involves releasing interleukin(IL)-1βand IL-18,GSDMDmediated hepatocyte pyroptosis recruited macrophages via MCP1/CCR2 to aggravate hepatocyte death.However,this pathological process was inhibited after knocking down GSDMD.CONCLUSION GSDMD-mediated hepatocyte pyroptosis plays an important role in the pathogenesis of ALF,recruiting macrophages to release inflammatory mediators by upregulating MCP1/CCR2 and leading to expansion of the inflammatory responses.GSDMD knockout can reduce hepatocyte death and inflammatory responses,thus alleviating ALF. 展开更多
关键词 Gasdermin D HEPATOCYTE PYROPTOSIS Acute liver failure MONOCYTE chemotactic PROTEIN 1/CC chemokine receptor-2
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