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Abstract
Cardiovascular diseases (CVD) constitute the major cause of death worldwide and show a higher prevalence in the adult population. The human umbilical cord consistsof two arteries and one vein, both composed of three tunics. The tunica intima, lined with endothelial cells, regulates vascular tone through the production/release of vasoregulatory substances. These substances can be vasoactive factors released by endothelial cells (ECs) that cause vasodilation (NO, PGI2, EDHF, and Bradykinin) or vasoconstriction (ET1, TXA2, and Ang II) depending on the cell type (ECs or SMC) that reacts to the stimulus. Vascular studies using ECs are important for the analysis of cardiovascular diseases since endothelial dysfunction is an important CVD risk factor. In this paper, we will address the morphological characteristics of the human umbilical cord and its component vessels. the constitution of the vascular endothelium, and the evolution of human umbilical cord-derived endothelial cells when isolated. Moreover, the role played by the endothelium in the vasomotor tone regulation, and how it may be associated with the existence of CVD, were discussed.
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Abstract
Heart failure (HF) is a growing epidemic with high morbidity and mortality at an international scale. The apelin-APJ receptor pathway has been implicated in HF, making it a promising therapeutic target. APJ has been shown to be activated by a novel endogenous peptide ligand known as Elabela (ELA, also called Toddler or Apela), with a critical role in cardiac development and function. Activation of the ELA-APJ receptor axis exerts a wide range of physiological effects, including depressor response, positive inotropic action, diuresis, anti-inflammatory, anti-fibrotic, and anti-remodeling, leading to its cardiovascular protection. The ELA-APJ axis is essential for diverse biological processes and has been shown to regulate fluid homeostasis, myocardial contractility, vasodilation, angiogenesis, cellular differentiation, apoptosis, oxidative stress, cardiorenal fibrosis, and dysfunction. The beneficial effects of the ELA-APJ receptor system are well-established by treating hypertension, myocardial infarction, and HF. Additionally, administration of ELA protects human embryonic stem cells against apoptosis and stress-induced cell death and promotes survival and self-renewal in an APJ-independent manner (X receptor) via the phosphatidylinositol 3-kinase/Akt pathway, which may provide a new therapeutic approach for HF. Thus, targeting the ELA-APJ axis has emerged as a pre-warning biomarker and a novel therapeutic approach against progression of HF. An increased understanding of cardiovascular actions of ELA will help to develop effective interventions. This article gives an overview of the characteristics of the ELA-apelin-APJ axis and summarizes the current knowledge on its cardioprotective roles, potential mechanisms, and prospective application for acute and chronic HF.
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Affiliation(s)
- Zheng Ma
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Juan-Juan Song
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Sara Martin
- Santa Rosa Family Medicine Residency, Santa Rosa, CA, 95403, USA
| | - Xin-Chun Yang
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
| | - Jiu-Chang Zhong
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
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203
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Tuday E, Nakano M, Akiyoshi K, Fu X, Shah AP, Yamaguchi A, Steenbergen C, Santhanam L, An SS, Berkowitz D, Baraban JM, Das S. Degradation of Premature-miR-181b by the Translin/Trax RNase Increases Vascular Smooth Muscle Cell Stiffness. Hypertension 2021; 78:831-839. [PMID: 34304585 PMCID: PMC8363557 DOI: 10.1161/hypertensionaha.120.16690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
[Figure: see text].
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Affiliation(s)
- Eric Tuday
- Geriatric Research Education and Clinical Center (GRECC), Veterans Affairs: Salt Lake City, UT 84148
- Department of Internal Medicine: Division of Cardiology, University of Utah, Salt Lake City, UT 84132
| | | | - Kei Akiyoshi
- Department of Anesthesiology & Critical Care Medicine
| | - Xiuping Fu
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins School of Medicine, Baltimore, MD 21205
| | - Aparna P. Shah
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins School of Medicine, Baltimore, MD 21205
| | - Atsushi Yamaguchi
- Department of Cardiovascular Surgery, Saitama Medical Center, Jichi Medical University, Saitama, Japan
| | - Charles Steenbergen
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205
| | | | - Steven S. An
- Department of Pharmacology, Rutgers-Robert Wood Johnson Medical School, The State University of New Jersey, Piscataway, NJ, 08854
- Rutgers Institute of Translational Medicine & Science, New Brunswick, NJ 08901
| | - Dan Berkowitz
- Department of Anesthesiology and Perioperative Medicine, The University of Alabama at Birmingham, Birmingham, AL 35294
| | - Jay M. Baraban
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins School of Medicine, Baltimore, MD 21205
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205
| | - Samarjit Das
- Department of Anesthesiology & Critical Care Medicine
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD 21205
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204
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Wang J, Fan S, Xiong Q, Niu Y, Zhang X, Qin J, Shi Y, Zhang L. Glucagon-like peptide-1 attenuates cardiac hypertrophy via the AngII/AT1R/ACE2 and AMPK/mTOR/p70S6K pathways. Acta Biochim Biophys Sin (Shanghai) 2021; 53:1189-1197. [PMID: 34357376 DOI: 10.1093/abbs/gmab099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Indexed: 12/15/2022] Open
Abstract
Glucagon-like peptide-1 (GLP-1), a novel type of glucose-lowering agent, has been reported to exert cardioprotective effects. However, the cardioprotective mechanism of GLP-1 on spontaneous hypertension-induced cardiac hypertrophy has not been fully elucidated. In this study, we revealed that liraglutide or alogliptin treatment ameliorated spontaneous hypertension-induced cardiac hypertrophy, as evidenced by decreased levels of cardiac hypertrophic markers (atrial natriuretic peptide, brain natriuretic peptide, and β-myosin heavy chain), as well as systolic blood pressure, diastolic blood pressure, mean arterial pressure, and histological changes. Both drugs significantly reduced the levels of angiotensin II (AngII) and AngII type 1 receptor (AT1R) and upregulated the levels of AngII type 2 receptor (AT2R) and angiotensin-converting enzyme 2 (ACE2), as indicated by a reduced AT1R/AT2R ratio. Simultaneously, treatment with liraglutide or alogliptin significantly increased GLP-1 receptor expression and adenosine monophosphate-activated protein kinase (AMPK) phosphorylation and downregulated the phosphorylation of mammalian target of rapamycin (mTOR), p70 ribosomal S6 protein kinase, and eukaryotic translation initiation factor 4E binding protein 1 in spontaneous hypertension rats. Furthermore, our data demonstrated that the AMPK inhibitor compound C or mTOR activator MHY1485 inhibited the anti-hypertrophic effect of GLP-1. In summary, our study suggests that liraglutide or alogliptin protects the heart against cardiac hypertrophy by regulating the expression of AngII/AT1R/ACE2 and activating the AMPK/mTOR pathway, and GLP-1 agonist can be used in the treatment of patients with cardiac hypertrophy.
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Affiliation(s)
- Jing Wang
- Department of Cardiology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Tongji Shanxi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Taiyuan 030032, China
| | - Shaohua Fan
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Qianfeng Xiong
- Department of Cardiology, Fengcheng People’s Hospital, Fengcheng 331100, China
| | - Yu Niu
- Department of Cardiology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Tongji Shanxi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Taiyuan 030032, China
| | - Xin Zhang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Junnan Qin
- Department of Cardiology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Tongji Shanxi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Taiyuan 030032, China
| | - Yawei Shi
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Lihui Zhang
- Department of General Medical, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Tongji Shanxi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Taiyuan 030032, China
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205
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Bhullar SK, Shah AK, Dhalla NS. Role of angiotensin II in the development of subcellular remodeling
in heart failure. EXPLORATION OF MEDICINE 2021. [DOI: 10.37349/emed.2021.00054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The development of heart failure under various pathological conditions such as myocardial infarction (MI), hypertension and diabetes are accompanied by adverse cardiac remodeling and cardiac dysfunction. Since heart function is mainly determined by coordinated activities of different subcellular organelles including sarcolemma, sarcoplasmic reticulum, mitochondria and myofibrils for regulating the intracellular concentration of Ca2+, it has been suggested that the occurrence of heart failure is a consequence of subcellular remodeling, metabolic alterations and Ca2+-handling abnormalities in cardiomyocytes. Because of the elevated plasma levels of angiotensin II (ANG II) due to activation of the renin-angiotensin system (RAS) in heart failure, we have evaluated the effectiveness of treatments with angiotensin converting enzyme (ACE) inhibitors and ANG II type 1 receptor (AT1R) antagonists in different experimental models of heart failure. Attenuation of marked alterations in subcellular activities, protein content and gene expression were associated with improvement in cardiac function in MI-induced heart failure by treatment with enalapril (an ACE inhibitor) or losartan (an AT1R antagonist). Similar beneficial effects of ANG II blockade on subcellular remodeling and cardiac performance were also observed in failing hearts due to pressure overload, volume overload or chronic diabetes. Treatments with enalapril and losartan were seen to reduce the degree of RAS activation as well as the level of oxidative stress in failing hearts. These observations provide evidence which further substantiate to support the view that activation of RAS and high level of plasma ANG II play a critical role in inducing subcellular defects and cardiac dys-function during the progression of heart failure.
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Affiliation(s)
- Sukhwinder K. Bhullar
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Centre, University of Manitoba, Winnipeg, Manitoba R2H 2A6, Canada
| | - Anureet K. Shah
- School of Kinesiology, Nutrition and Food Science, California State University, Los Angeles, CA 90032, USA
| | - Naranjan S. Dhalla
- Institute of Cardiovascular Sciences, St. Boniface Hospital Albrechtsen Research Centre, University of Manitoba, Winnipeg, Manitoba R2H 2A6, Canada; Department of Physiology and Pathophysiology, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba R3E 3P5, Canada
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206
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Korystova AF, Kublik LN, Samokhvalova TV, Shaposhnikova VV, Korystov YN. Black tea is more effective than green tea in prevention of radiation-induced oxidative stress in the aorta of rats. Biomed Pharmacother 2021; 142:112064. [PMID: 34426255 DOI: 10.1016/j.biopha.2021.112064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/11/2021] [Accepted: 08/16/2021] [Indexed: 11/30/2022] Open
Abstract
In the work, the effect of black tea on oxidative stress induced in the aorta by irradiation was studied. The efficiency of black and green tea types was compared, and the effect of the main green tea components (-)-epigallocatechin galate (EGCG) and (-)-epigallocatechin (EGC) on the aorta was studied. The activity of ACE in rat aorta segments was determined by measuring the hydrolysis of hippuryl-L-histidyl-L-leucine, and the production of ROS was estimated from the oxidation of dichlorodihydrofluorescein. Black tea prevented the radiation-induced activation of the ACE and suppressed increased ROS production in the aorta of irradiated rats. The IC50 value for the suppression of the irradiation-induced increase in ACE activity is 1 ml of black tea brewed at a rate of 0.17 g/100 ml. Black tea is 12 times more effective than green tea. The administration of both catechin derivatives from green tea to rats leads to an increase in the activity of ACE and the formation of ROS in the aorta. The dose that provided half maximum activation of ACE (EC50) on intraperitoneal (i. p.) injection of galloylated catechins was found to be the same, 0.06-0.07 μg/kg of body weight. Upon intragastric gavage of EGCG, the EC50 value was by one order of magnitude higher, 0.8 μg/kg. Black tea was more effective than green tea in prevention a radiation-induced increase of ACE activity and oxidative stress in the aorta. This difference was explained by a low content of galloylated catechins in black tea.
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Affiliation(s)
- Antonina F Korystova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Institutskaya 3, 142290, Russia
| | - Ludmila N Kublik
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Institutskaya 3, 142290, Russia
| | - Tamara V Samokhvalova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Institutskaya 3, 142290, Russia
| | - Vera V Shaposhnikova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Institutskaya 3, 142290, Russia
| | - Yuri N Korystov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Institutskaya 3, 142290, Russia.
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207
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He X, Tao Z, Zhang Z, He W, Xie Y, Zhang L. The potential role of RAAS-related hsa_circ_0122153 and hsa_circ_0025088 in essential hypertension. Clin Exp Hypertens 2021; 43:715-722. [PMID: 34392742 DOI: 10.1080/10641963.2021.1945077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Background: The dysregulation of renin-angiotensin-aldosterone system (RAAS) is closely related to the development of essential hypertension (EH). MicroRNAs (miRNAs) are an important regulator of RAAS. The sponge effect of circular RNAs (circRNAs) on miRNAs makes the circRNA-miRNA-mRNA axis in EH possible, however, there is currently a lack of relevant evidence.Material and Methods: A circRNA-miRNA network was constructed based on the previous circRNAs microarray results. The expression of RAAS-related miRNAs and circRNAs were verified by qRT-PCR. Peripheral blood samples of 106 EH patients and 106 healthy volunteers were included in this study. GO and KEGG enrichment were performed to predict the role of candidate circRNAs in EH.Results: In EH patients, RAAS-related hsa-miR-483-3p and hsa-miR-27a-3p were down-regulated, and hsa_circ_0122153 and hsa_circ_0025088 were up-regulated. The relative expression of RAAS-related circRNAs and target miRNAs showed a negative correlation (hsa_circ_0122153-hsa-miR-483-3p and hsa_circ_0025088-hsa-miR-27a-3p). Hsa_circ_0122153 or hsa_circ_0025088 combined with corresponding miRNAs and environmental factors may support the early diagnosis of EH. Hsa_circ_0122153 and hsa_circ_0025088 may participate in the regulation of aldosterone and the secretion of renin through the circRNA-miRNA-mRNA network, respectively.Conclusion: Highly expressed hsa_circ_0122153 and hsa_circ_0025088 increase the risk of EH. The hsa_circ_0122153/hsa-miR-483-3p and hsa_circ_0025088/hsa-miR-27a-3p axis involving RAAS were potential EH pathways.
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Affiliation(s)
- Xin He
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China.,Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medical School of Ningbo University, Ningbo, Zhejiang Province, China
| | - Zhenbo Tao
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China
| | - Zebo Zhang
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medical School of Ningbo University, Ningbo, Zhejiang Province, China
| | - Wenming He
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China
| | - Yanqing Xie
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China
| | - Lina Zhang
- Insitute of Geriatrics, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang Province, China
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208
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Ul Haq I, Khan T, Ahmad T, Shah AJ. Insight into the cardiovascular mechanisms of blood pressure lowering effect of gitogenin: a steroidal saponin. Clin Exp Hypertens 2021; 43:723-729. [PMID: 34396877 DOI: 10.1080/10641963.2021.1950748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Background/objectives: Steroidal saponins are widely distributed in medicinal plants with potential applications in cardiovascular disorders. Gitogenin, a saponin, has not been explored as antihypertensive; this investigation was aimed to explore its blood pressure lowering potential and underlying mechanisms.Methodology: The effect of gitogenin was evaluated on blood pressure in vivo, using normotensive rat model and the underlying cardiovascular mechanism(s) in vitro, in isolated rat aorta and in atria preparations using PowerLab data acquisition system (ADInstrument, Australia).Results: Intravenous injection of gitogenin decreased mean arterial pressure (MAP) in anesthetized rats. Atropine (1 mg/kg) and L-NAME (100 mg/kg) pretreatment significantly (*p < .05) attenuated effect on MAP to gitogenin. In isolated intact aortic rings, gitogenin induced endothelium-dependent vasodilatation (maximum 65%), which was ablated (maximum 22%) with L-NAME (100 mg/kg) and atropine (1 μM) pretreatment or endothelium removal. Gitogenin was found more potent against angiotensin II precontractions without effect on high K+ and low K+ precontractions. In isolated rat right atria, gitogenin suppressed rate and force of contractions. Atropine (1 μM) pretreatment partially inhibited effect of gitogenin on force and eliminated its effect on rate. Combined atropine (10 μM) and atenolol (0.5 μM) pretreatment was without effect on force of contractions but eliminated effect of gitogenin on rate with 25% increase.Conclusion: These findings indicate that antihypertensive effect of gitogenin is the outcome of vascular and cardiac effects; agonistic effect on vascular M3 and cardiac M2 receptors; and being more selective for M2. Increase in the rate of atrial contraction might be of clinical importance.
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Affiliation(s)
- Imran Ul Haq
- Department of Pharmacy, COMSATS University Islamabad, KP, Pakistan
| | - Taous Khan
- Department of Pharmacy, COMSATS University Islamabad, KP, Pakistan
| | - Taseer Ahmad
- Department of Pharmacy, COMSATS University Islamabad, KP, Pakistan
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209
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Mohandas R, Chamarthi G, Segal MS. Nonatherosclerotic Vascular Abnormalities Associated with Chronic Kidney Disease. Cardiol Clin 2021; 39:415-425. [PMID: 34247754 DOI: 10.1016/j.ccl.2021.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Nonatherosclerotic vascular diseases are manifested by endothelial dysfunction, hypertension, vascular calcification, coronary microvascular dysfunction, and calciphylaxis. Unfortunately, there are no definitive treatments for many of these disorders other than hypertension. In addition, although hypertension is more difficult to treat in the chronic kidney disease population, it is necessary to try and target a blood pressure of less than 130/80 mm Hg through the use of aggressive angiotensin-converting enzyme inhibitors/angiotensin receptor blockers, diuretics, and other antihypertensive medications. New therapies are being actively investigated in an attempt to treat nonatherosclerotic vascular diseases in the chronic kidney disease population.
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Affiliation(s)
- Rajesh Mohandas
- Division of Nephrology, Hypertension & Transplantation, University of Florida College of Medicine, CG-98, 1600 Archer Road, Gainesville, FL 32610, USA; Nephrology and Hypertension Section, Gainesville Veterans Administration Medical Center, CG-98, 1600 Archer Road, Gainesville, FL 32610, USA
| | - Gajapathiraju Chamarthi
- Division of Nephrology, Hypertension & Transplantation, University of Florida College of Medicine, CG-98, 1600 Archer Road, Gainesville, FL 32610, USA
| | - Mark S Segal
- Division of Nephrology, Hypertension & Transplantation, University of Florida College of Medicine, CG-98, 1600 Archer Road, Gainesville, FL 32610, USA; Nephrology and Hypertension Section, Gainesville Veterans Administration Medical Center, CG-98, 1600 Archer Road, Gainesville, FL 32610, USA.
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210
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Cooper SL, Boyle E, Jefferson SR, Heslop CRA, Mohan P, Mohanraj GGJ, Sidow HA, Tan RCP, Hill SJ, Woolard J. Role of the Renin-Angiotensin-Aldosterone and Kinin-Kallikrein Systems in the Cardiovascular Complications of COVID-19 and Long COVID. Int J Mol Sci 2021; 22:8255. [PMID: 34361021 PMCID: PMC8347967 DOI: 10.3390/ijms22158255] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 07/29/2021] [Accepted: 07/29/2021] [Indexed: 01/08/2023] Open
Abstract
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is the virus responsible for the COVID-19 pandemic. Patients may present as asymptomatic or demonstrate mild to severe and life-threatening symptoms. Although COVID-19 has a respiratory focus, there are major cardiovascular complications (CVCs) associated with infection. The reported CVCs include myocarditis, heart failure, arrhythmias, thromboembolism and blood pressure abnormalities. These occur, in part, because of dysregulation of the Renin-Angiotensin-Aldosterone System (RAAS) and Kinin-Kallikrein System (KKS). A major route by which SARS-CoV-2 gains cellular entry is via the docking of the viral spike (S) protein to the membrane-bound angiotensin converting enzyme 2 (ACE2). The roles of ACE2 within the cardiovascular and immune systems are vital to ensure homeostasis. The key routes for the development of CVCs and the recently described long COVID have been hypothesised as the direct consequences of the viral S protein/ACE2 axis, downregulation of ACE2 and the resulting damage inflicted by the immune response. Here, we review the impact of COVID-19 on the cardiovascular system, the mechanisms by which dysregulation of the RAAS and KKS can occur following virus infection and the future implications for pharmacological therapies.
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Affiliation(s)
- Samantha L. Cooper
- Division of Physiology, Pharmacology and Neuroscience, School of Life Sciences, University of Nottingham, Nottingham NG7 2UH, UK;
- Centre of Membrane Proteins and Receptors (COMPARE), School of Life Sciences, University of Nottingham, Nottingham NG7 2UH, UK
| | - Eleanor Boyle
- School of Medicine, Queen’s Medical Centre, University of Nottingham, Nottingham NG7 2UH, UK; (E.B.); (S.R.J.); (C.R.A.H.); (P.M.); (G.G.J.M.); (H.A.S.); (R.C.P.T.)
| | - Sophie R. Jefferson
- School of Medicine, Queen’s Medical Centre, University of Nottingham, Nottingham NG7 2UH, UK; (E.B.); (S.R.J.); (C.R.A.H.); (P.M.); (G.G.J.M.); (H.A.S.); (R.C.P.T.)
| | - Calum R. A. Heslop
- School of Medicine, Queen’s Medical Centre, University of Nottingham, Nottingham NG7 2UH, UK; (E.B.); (S.R.J.); (C.R.A.H.); (P.M.); (G.G.J.M.); (H.A.S.); (R.C.P.T.)
| | - Pirathini Mohan
- School of Medicine, Queen’s Medical Centre, University of Nottingham, Nottingham NG7 2UH, UK; (E.B.); (S.R.J.); (C.R.A.H.); (P.M.); (G.G.J.M.); (H.A.S.); (R.C.P.T.)
| | - Gearry G. J. Mohanraj
- School of Medicine, Queen’s Medical Centre, University of Nottingham, Nottingham NG7 2UH, UK; (E.B.); (S.R.J.); (C.R.A.H.); (P.M.); (G.G.J.M.); (H.A.S.); (R.C.P.T.)
| | - Hamza A. Sidow
- School of Medicine, Queen’s Medical Centre, University of Nottingham, Nottingham NG7 2UH, UK; (E.B.); (S.R.J.); (C.R.A.H.); (P.M.); (G.G.J.M.); (H.A.S.); (R.C.P.T.)
| | - Rory C. P. Tan
- School of Medicine, Queen’s Medical Centre, University of Nottingham, Nottingham NG7 2UH, UK; (E.B.); (S.R.J.); (C.R.A.H.); (P.M.); (G.G.J.M.); (H.A.S.); (R.C.P.T.)
| | - Stephen J. Hill
- Division of Physiology, Pharmacology and Neuroscience, School of Life Sciences, University of Nottingham, Nottingham NG7 2UH, UK;
- Centre of Membrane Proteins and Receptors (COMPARE), School of Life Sciences, University of Nottingham, Nottingham NG7 2UH, UK
| | - Jeanette Woolard
- Division of Physiology, Pharmacology and Neuroscience, School of Life Sciences, University of Nottingham, Nottingham NG7 2UH, UK;
- Centre of Membrane Proteins and Receptors (COMPARE), School of Life Sciences, University of Nottingham, Nottingham NG7 2UH, UK
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211
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Wu M, Wu X, Cheng Y, Shen Z, Chen X, Xie Q, Chu J, Li J, Liu L, Wei L, Long L, Cai Q, Peng J, Shen A. Qingda Granule Attenuates Angiotensin II-Induced Blood Pressure and Inhibits Ca 2+/ERK Signaling Pathway. Front Pharmacol 2021; 12:688877. [PMID: 34393778 PMCID: PMC8358933 DOI: 10.3389/fphar.2021.688877] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/28/2021] [Indexed: 11/30/2022] Open
Abstract
Objective: As a well-known traditional Chinese medicine formula prescribed by academician Ke-ji Chen, Qingda granule (QDG) lowered the blood pressure of spontaneously hypertensive rats and attenuated hypertensive cardiac remodeling and inflammation. However, its functional role and underlying mechanisms on hypertensive vascular function remain largely unclear. This study aims to assess the effects of QDG treatment on Angiotensin II- (AngII-) induced hypertension and vascular function and explore its underlying mechanisms both in vitro and in vivo. Methods: In an in vivo study, 25 male C57BL/6 mice were randomly divided into five groups, including Control, AngII, AngII + QDG-L, AngII + QDG-M, and AngII + QDG-H groups (n = 5 for each group). Mice in AngII and AngII + QDG-L/-M/-H groups were infused with AngII (500 ng/kg/min), while in the Control group, they were infused with saline. Mice in AngII + QDG were intragastrically given different concentrations of QDG (0.5725, 1.145, or 2.29 g/kg/day), while in Control and AngII groups, they were intragastrically given equal volumes of double distilled water for 2 weeks. Blood pressure was determined at 0, 1, and 2 weeks of treatment. Ultrasound was used to detect the pulse wave velocity (PWV) and HE staining to detect the pathological change of the abdominal aorta. RNA sequencing (RNA-seq) was performed to identify the differentially expressed transcripts (DETs) and related signaling pathways. IHC was used to detect the expression of p-ERK in the abdominal aorta. Primary isolated rat vascular smooth muscle cells (VSMCs) were used to assess the cellular Ca2+ release and activation of the ERK pathway by confocal microscope and western blotting analysis, respectively. Results: QDG treatment significantly alleviated the elevated blood pressure, the PWV, and the thickness of the abdominal aorta in AngII-induced hypertensive mice. RNA-seq and KEGG analyses identified 1,505 DETs and multiple enriched pathways (including vascular contraction and calcium signaling pathway) after QDG treatment. Furthermore, confocal microscope showed that QDG treatment partially attenuated the increase of Ca2+ release with the stimulation of AngII in cultured VSMCs. In addition, IHC and western blotting indicated that QDG treatment also partially alleviated the increase of phospho-ERK levels in abdominal aorta tissues of mice and cultured VSMCs after the infusion or stimulation of AngII. Conclusion: QDG treatment attenuated the elevation of blood pressure, abdominal aorta dysfunction, pathological changes, Ca2+ release, and activation of the ERK signaling pathway.
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Affiliation(s)
- Meizhu Wu
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xiangyan Wu
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Ying Cheng
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Zhiqing Shen
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xiaoping Chen
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Qiurong Xie
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jianfeng Chu
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jiapeng Li
- Department of Physical Education, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Liya Liu
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Lihui Wei
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Linzi Long
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China.,Department of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qiaoyan Cai
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jun Peng
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Aling Shen
- Academy of Integrative Medicine, Fuzhou, China.,Chen Keji Academic Thought Inheritance Studio, Fuzhou, China.,Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, China
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212
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Laghlam D, Jozwiak M, Nguyen LS. Renin-Angiotensin-Aldosterone System and Immunomodulation: A State-of-the-Art Review. Cells 2021; 10:cells10071767. [PMID: 34359936 PMCID: PMC8303450 DOI: 10.3390/cells10071767] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/30/2021] [Accepted: 07/09/2021] [Indexed: 12/11/2022] Open
Abstract
The renin–angiotensin system (RAS) has long been described in the field of cardiovascular physiology as the main player in blood pressure homeostasis. However, other effects have since been described, and include proliferation, fibrosis, and inflammation. To illustrate the immunomodulatory properties of the RAS, we chose three distinct fields in which RAS may play a critical role and be the subject of specific treatments. In oncology, RAS hyperactivation has been associated with tumor migration, survival, cell proliferation, and angiogenesis; preliminary data showed promise of the benefit of RAS blockers in patients treated for certain types of cancer. In intensive care medicine, vasoplegic shock has been associated with severe macro- and microcirculatory imbalance. A relative insufficiency in angiotensin II (AngII) was associated to lethal outcomes and synthetic AngII has been suggested as a specific treatment in these cases. Finally, in solid organ transplantation, both AngI and AngII have been associated with increased rejection events, with a regional specificity in the RAS activity. These elements emphasize the complexity of the direct and indirect interactions of RAS with immunomodulatory pathways and warrant further research in the field.
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213
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Rossi AP, Alloway RR, Hildeman D, Woodle ES. Plasma cell biology: Foundations for targeted therapeutic development in transplantation. Immunol Rev 2021; 303:168-186. [PMID: 34254320 DOI: 10.1111/imr.13011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 06/22/2021] [Indexed: 12/20/2022]
Abstract
Solid organ transplantation is a life-saving procedure for patients with end-stage organ disease. Over the past 70 years, tremendous progress has been made in solid organ transplantation, particularly in T-cell-targeted immunosuppression and organ allocation systems. However, humoral alloimmune responses remain a major challenge to progress. Patients with preexisting antibodies to human leukocyte antigen (HLA) are at significant disadvantages in regard to receiving a well-matched organ, moreover, those who develop anti-HLA antibodies after transplantation face a significant foreshortening of renal allograft survival. Historical therapies to desensitize patients prior to transplantation or to treat posttransplant AMR have had limited effectiveness, likely because they do not significantly reduce antibody levels, as plasma cells, the source of antibody production, remain largely unaffected. Herein, we will discuss the significance of plasma cells in transplantation, aspects of their biology as potential therapeutic targets, clinical challenges in developing strategies to target plasma cells in transplantation, and lastly, novel approaches that have potential to advance the field.
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Affiliation(s)
- Amy P Rossi
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Rita R Alloway
- Division of Nephrology, Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - David Hildeman
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - E Steve Woodle
- Division of Transplantation, Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, USA
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214
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Kaur S, Garg A, Kaushal N. Hempseed (Cannabis sativa) offers effective alternative over statins in ameliorating hypercholesterolemia associated nephropathy. Clin Biochem 2021; 93:104-111. [PMID: 33861983 DOI: 10.1016/j.clinbiochem.2021.04.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/24/2021] [Accepted: 04/09/2021] [Indexed: 01/05/2023]
Abstract
A direct link between hypercholesterolemia (HC) and renal pathologies has been established. Statins, the drugs of choice for HC management, have been associated with various side effects and toxicities, including nephropathy and other renal insults. Thus, natural dietary products based-alternative strategies for HC and associated pathologies are being considered. OBJECTIVES Based on the unique nutritional composition and numerous health benefits of Hempseeds (Cannabis sativa), currently the potential anti-inflammatory and redox modulatory effects of hempseeds lipid extract (HEMP) against HC associated renal damage were evaluated and compared with statins (Simvastatin) in HFD induced experimental model of HC in rats. DESIGN & METHODS The hempseed lipid fractions (HEMP) were prepared and their ameliorating effects on HFD induced lipid profiles, renal function markers (RFT), histopathological/morphological changes, renal oxidative stress, and inflammation markers were studied and compared with statins (HFD + STATINS). Further, HEMP-mediated modulation of lipid metabolism mediators (APO-B/E) was studied. RESULTS Not only, HEMP administration improved the lipid profiles and morphological signs of HC, but it also was safe compared to Simvastatin in terms of hepatic and renal function markers. Further, changes in renal histoarchitecture, biochemical markers of oxidative stress, and expression profiles of lipid metabolism and inflammatory pathways (Cox-1/2, PGDS, PGES) revealed that HEMP positively modulating the redox homeostasis activated the resolution pathways against HC associated renal insults. CONCLUSION The outcomes of the current study indicated HEMP's ameliorative and therapeutic potential against hypercholesterolemia-associated nephropathies and other systemic effects.
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Affiliation(s)
- Simarpreet Kaur
- Department of Biophysics, Panjab University, Chandigarh 160014, India
| | - Ayushi Garg
- Department of Biophysics, Panjab University, Chandigarh 160014, India
| | - Naveen Kaushal
- Department of Biophysics, Panjab University, Chandigarh 160014, India.
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215
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Ramos SG, Rattis BADC, Ottaviani G, Celes MRN, Dias EP. ACE2 Down-Regulation May Act as a Transient Molecular Disease Causing RAAS Dysregulation and Tissue Damage in the Microcirculatory Environment Among COVID-19 Patients. THE AMERICAN JOURNAL OF PATHOLOGY 2021; 191:1154-1164. [PMID: 33964216 PMCID: PMC8099789 DOI: 10.1016/j.ajpath.2021.04.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/05/2021] [Accepted: 04/22/2021] [Indexed: 02/06/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2, the etiologic agent of coronavirus disease 2019 (COVID-19) and the cause of the current pandemic, produces multiform manifestations throughout the body, causing indiscriminate damage to multiple organ systems, particularly the lungs, heart, brain, kidney, and vasculature. The aim of this review is to provide a new assessment of the data already available for COVID-19, exploring it as a transient molecular disease that causes negative regulation of angiotensin-converting enzyme 2, and consequently, deregulates the renin-angiotensin-aldosterone system, promoting important changes in the microcirculatory environment. Another goal of the article is to show how these microcirculatory changes may be responsible for the wide variety of injury mechanisms observed in different organs in this disease. The new concept of COVID-19 provides a unifying pathophysiological picture of this infection and offers fresh insights for a rational treatment strategy to combat this ongoing pandemic.
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Affiliation(s)
- Simone Gusmão Ramos
- Department of Pathology and Forensic Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Bruna Amanda da Cruz Rattis
- Department of Pathology and Forensic Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Giulia Ottaviani
- Centro di Ricerca Lino Rossi, Anatomic Pathology MED-08, Università degli Studi di Milano, Milan, Italy
| | - Mara Rubia Nunes Celes
- Department of Pathology and Forensic Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil,Department of Bioscience and Technology, Institute of Tropical Pathology and Public Health, Federal University of Goias, Goiania, Goias, Brazil
| | - Eliane Pedra Dias
- Department of Pathology, Faculty of Medicine, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
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216
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Wang EY, Kuzmanov U, Smith JB, Dou W, Rafatian N, Lai BFL, Lu RXZ, Wu Q, Yazbeck J, Zhang XO, Sun Y, Gramolini A, Radisic M. An organ-on-a-chip model for pre-clinical drug evaluation in progressive non-genetic cardiomyopathy. J Mol Cell Cardiol 2021; 160:97-110. [PMID: 34216608 DOI: 10.1016/j.yjmcc.2021.06.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/22/2021] [Accepted: 06/25/2021] [Indexed: 01/08/2023]
Abstract
Angiotensin II (Ang II) presents a critical mediator in various pathological conditions such as non-genetic cardiomyopathy. Osmotic pump infusion in rodents is a commonly used approach to model cardiomyopathy associated with Ang II. However, profound differences in electrophysiology and pharmacokinetics between rodent and human cardiomyocytes may limit predictability of animal-based experiments. This study investigates the application of an Organ-on-a-chip (OOC) system in modeling Ang II-induced progressive cardiomyopathy. The disease model is constructed to recapitulate myocardial response to Ang II in a temporal manner. The long-term tissue cultivation and non-invasive functional readouts enable monitoring of both acute and chronic cardiac responses to Ang II stimulation. Along with mapping of cytokine secretion and proteomic profiles, this model presents an opportunity to quantitatively measure the dynamic pathological changes that could not be otherwise identified in animals. Further, we present this model as a testbed to evaluate compounds that target Ang II-induced cardiac remodeling. Through assessing the effects of losartan, relaxin, and saracatinib, the drug screening data implicated multifaceted cardioprotective effects of relaxin in restoring contractile function and reducing fibrotic remodeling. Overall, this study provides a controllable platform where cardiac activities can be explicitly observed and tested over the pathological process. The facile and high-content screening can facilitate the evaluation of potential drug candidates in the pre-clinical stage.
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Affiliation(s)
- Erika Yan Wang
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Uros Kuzmanov
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario M5G 1X8, Canada; Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Jacob B Smith
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
| | - Wenkun Dou
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Naimeh Rafatian
- Toronto General Research Institute, Toronto, Ontario M5G 2C4, Canada
| | - Benjamin Fook Lun Lai
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Rick Xing Ze Lu
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Qinghua Wu
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Joshua Yazbeck
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Xiao-Ou Zhang
- School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Yu Sun
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Anthony Gramolini
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, University of Toronto, Toronto, Ontario M5G 1X8, Canada; Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Milica Radisic
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada; Toronto General Research Institute, Toronto, Ontario M5G 2C4, Canada.
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217
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Implication of RAS in Postnatal Cardiac Remodeling, Fibrosis and Dysfunction Induced by Fetal Undernutrition. PATHOPHYSIOLOGY 2021; 28:273-290. [PMID: 35366262 PMCID: PMC8830479 DOI: 10.3390/pathophysiology28020018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/24/2021] [Accepted: 06/02/2021] [Indexed: 01/02/2023] Open
Abstract
Fetal undernutrition is a risk factor for cardiovascular diseases. Male offspring from rats exposed to undernutrition during gestation (MUN) exhibit oxidative stress during perinatal life and develop cardiac dysfunction in ageing. Angiotensin-II is implicated in oxidative stress-mediated cardiovascular fibrosis and remodeling, and lactation is a key developmental window. We aimed to assess if alterations in RAS during lactation participate in cardiac dysfunction associated with fetal undernutrition. Control dams received food ad libitum, and MUN had 50% nutrient restriction during the second half of gestation. Both dams were fed ad libitum during lactation, and male offspring were studied at weaning. We assessed: ventricular structure and function (echocardiography); blood pressure (intra-arterially, anesthetized rats); collagen content and intramyocardial artery structure (Sirius red, Masson Trichromic); myocardial and intramyocardial artery RAS receptors (immunohistochemistry); plasma angiotensin-II (ELISA) and TGF-β1 protein expression (Western Blot). Compared to Control, MUN offspring exhibited significantly higher plasma Angiotensin-II and a larger left ventricular mass, as well as larger intramyocardial artery media/lumen, interstitial collagen and perivascular collagen. In MUN hearts, TGF-β1 tended to be higher, and the end-diastolic diameter and E/A ratio were significantly lower with no differences in ejection fraction or blood pressure. In the myocardium, no differences between groups were detected in AT1, AT2 or Mas receptors, with MrgD being significantly lower in the MUN group. In intramyocardial arteries from MUN rats, AT1 and Mas receptors were significantly elevated, while AT2 and MrgD were lower compared to Control. Conclusions. In rats exposed to fetal undernutrition, RAS disbalance and associated cardiac remodeling during lactation may set the basis for later heart dysfunction.
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218
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Guo F, Hall AR, Tape CJ, Ling S, Pointon A. Intra- and intercellular signaling pathways associated with drug-induced cardiac pathophysiology. Trends Pharmacol Sci 2021; 42:675-687. [PMID: 34092416 DOI: 10.1016/j.tips.2021.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 04/20/2021] [Accepted: 05/06/2021] [Indexed: 11/30/2022]
Abstract
Cardiac physiology and homeostasis are maintained by the interaction of multiple cell types, via both intra- and intercellular signaling pathways. Perturbations in these signaling pathways induced by oncology therapies can reduce cardiac function, ultimately leading to heart failure. As cancer survival increases, related cardiovascular complications are becoming increasingly prevalent, thus identifying the perturbations and cell signaling drivers of cardiotoxicity is increasingly important. Here, we discuss the homotypic and heterotypic cellular interactions that form the basis of intra- and intercellular cardiac signaling pathways, and how oncological agents disrupt these pathways, leading to heart failure. We also highlight the emerging systems biology techniques that can be applied, enabling a deeper understanding of the intra- and intercellular signaling pathways across multiple cell types associated with cardiovascular toxicity.
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Affiliation(s)
- Fei Guo
- Functional and Mechanistic Safety, Clinical Pharmacology and Safety Sciences, Research and Development, AstraZeneca, Cambridge, UK; Cell Communication Laboratory, Department of Oncology, University College London Cancer Institute, London, WC1E 6DD, UK
| | - Andrew R Hall
- Functional and Mechanistic Safety, Clinical Pharmacology and Safety Sciences, Research and Development, AstraZeneca, Cambridge, UK
| | - Christopher J Tape
- Cell Communication Laboratory, Department of Oncology, University College London Cancer Institute, London, WC1E 6DD, UK
| | - Stephanie Ling
- Imaging and Data Analytics, Clinical Pharmacology and Safety Sciences, Research and Development, AstraZeneca, Cambridge, UK
| | - Amy Pointon
- Functional and Mechanistic Safety, Clinical Pharmacology and Safety Sciences, Research and Development, AstraZeneca, Cambridge, UK.
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219
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The role of leukemia inhibitory factor in pathogenesis of pre-eclampsia: molecular and cell signaling approach. J Mol Histol 2021; 52:635-642. [PMID: 34076833 DOI: 10.1007/s10735-021-09989-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 05/28/2021] [Indexed: 01/03/2023]
Abstract
Endothelial dysfunction is considered as the main hallmark of Preeclampsia (PE). Despite the unknown pathogenesis of PE, different possible causes have been suggested in various studies. In this review, we first studied the Leukemia inhibitory factor (LIF) role in the related pathways to the PE pathogenesis, such as inflammation, endothelial dysfunction and hypertension. LIF can increase the expression of ICAM-1 and VCAM-1 via the JAK/STAT3 pathway, thereby inducing inflammatory responses and endothelial dysfunction. It can also be involved in the vascular vasoconstriction and hypertension by reducing the nitric oxide (NO) synthesis. Identifying the link between LIF and pathways associated with PE pathogenesis could be effective to achieve an effective PE treatment in the future.
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220
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Negi P, Cheke RS, Patil VM. Recent advances in pharmacological diversification of Src family kinase inhibitors. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2021. [DOI: 10.1186/s43042-021-00172-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Abstract
Background
Src kinase, a nonreceptor protein-tyrosine kinase is composed of 11 members (in human) and is involved in a wide variety of essential functions required to sustain cellular homeostasis and survival.
Main body of the abstract
Deregulated activity of Src family kinase is related to malignant transformation. In 2001, Food and Drug Administration approved imatinib for the treatment of chronic myeloid leukemia followed by approval of various other inhibitors from this category as effective therapeutics for cancer patients. In the past decade, Src family kinase has been investigated for the treatment of diverse pathologies in addition to cancer. In this regard, we provide a systematic evaluation of Src kinase regarding its mechanistic role in cancer and other diseases. Here we comment on preclinical and clinical success of Src kinase inhibitors in cancer followed by diabetes, hypertension, tuberculosis, and inflammation.
Short conclusion
Studies focusing on the diversified role of Src kinase as potential therapeutical target for the development of medicinally active agents might produce significant advances in the management of not only various types of cancer but also other diseases which are in demand for potent and safe therapeutics.
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221
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van Lier D, Kox M, Pickkers P. Promotion of vascular integrity in sepsis through modulation of bioactive adrenomedullin and dipeptidyl peptidase 3. J Intern Med 2021; 289:792-806. [PMID: 33381880 PMCID: PMC8246835 DOI: 10.1111/joim.13220] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/07/2020] [Accepted: 11/10/2020] [Indexed: 12/19/2022]
Abstract
Sepsis represents one of the major medical challenges of the 21st century. Despite substantial improvements in the knowledge on pathophysiological mechanisms, this has so far not translated into novel adjuvant treatment strategies for sepsis. In sepsis, both vascular tone and vascular integrity are compromised, and contribute to the development of shock, which is strongly related to the development of organ dysfunction and mortality. In this review, we focus on dipeptidyl peptidase 3 (DPP3) and adrenomedullin (ADM), two molecules that act on the vasculature and are involved in the pathophysiology of sepsis and septic shock. DPP3 is an ubiquitous cytosolic enzyme involved in the degradation of several important signalling molecules essential for regulation of vascular tone, including angiotensin II. ADM is a key hormone involved in the regulation of vascular tone and endothelial barrier function. Previous studies have shown that circulating concentrations of both DPP3 and ADM are independently associated with the development of organ failure and adverse outcome in sepsis. We now discuss new evidence illustrating that these molecules indeed represent two distinct pathways involved in the development of septic shock. Recently, both ADM-enhancing therapies aimed at improving endothelial barrier function and vascular tone and DPP3-blocking therapies aimed at restoring systemic angiotensin responses have been shown to improve outcome in various preclinical sepsis models. Given the current lack of effective adjuvant therapies in sepsis, additional research on the therapeutic application of these peptides in humans is highly warranted.
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Affiliation(s)
- D van Lier
- From the, Department of Intensive Care Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, The Netherlands
| | - M Kox
- From the, Department of Intensive Care Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, The Netherlands
| | - P Pickkers
- From the, Department of Intensive Care Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, The Netherlands
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222
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Ferrario CM, Groban L, Wang H, Cheng CP, VonCannon JL, Wright KN, Sun X, Ahmad S. The Angiotensin-(1-12)/Chymase axis as an alternate component of the tissue renin angiotensin system. Mol Cell Endocrinol 2021; 529:111119. [PMID: 33309638 PMCID: PMC8127338 DOI: 10.1016/j.mce.2020.111119] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 11/18/2020] [Accepted: 12/06/2020] [Indexed: 02/08/2023]
Abstract
The identification of an alternate extended form of angiotensin I composed of the first twelve amino acids at the N-terminal of angiotensinogen has generated new knowledge of the importance of noncanonical mechanisms for renin independent generation of angiotensins. The human sequence of the dodecapeptide angiotensin-(1-12) [N-Asp1-Arg2-Val3-Tyr4-Ile5-His6-Pro7-Phe8-His9-Leu10-Val1-Ile12-COOH] is an endogenous substrate that in the rat has been documented to be present in multiple organs including the heart, brain, kidney, gut, adrenal gland, and the bone marrow. Newer studies have confirmed the existence of Ang-(1-12) as an Ang II-forming substrate in the blood and heart of normal and diseased patients. Studies to-date document that angiotensin II generation from angiotensin-(1-12) does not require renin participation while chymase rather than angiotensin converting enzyme shows high catalytic activity in converting this tissue substrate into angiotensin II directly.
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Affiliation(s)
- Carlos M Ferrario
- Department of Surgery and Physiology-Pharmacology, Wake Forest School of Medicine, Winston Salem, NC, USA.
| | - Leanne Groban
- Department of Anesthesiology, Wake Forest School of Medicine, Winston Salem, NC, USA
| | - Hao Wang
- Department of Anesthesiology, Wake Forest School of Medicine, Winston Salem, NC, USA
| | - Che Ping Cheng
- Department of Internal Medicine, Section on Cardiovascular Medicine, Wake Forest School of Medicine, Winston Salem, NC, USA
| | - Jessica L VonCannon
- Department of Surgery and Physiology-Pharmacology, Wake Forest School of Medicine, Winston Salem, NC, USA
| | - Kendra N Wright
- Department of Surgery and Physiology-Pharmacology, Wake Forest School of Medicine, Winston Salem, NC, USA
| | - Xuming Sun
- Department of Anesthesiology, Wake Forest School of Medicine, Winston Salem, NC, USA
| | - Sarfaraz Ahmad
- Department of Surgery and Physiology-Pharmacology, Wake Forest School of Medicine, Winston Salem, NC, USA
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223
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Cheema PS, Nandi D, Nag A. Exploring the therapeutic potential of forkhead box O for outfoxing COVID-19. Open Biol 2021; 11:210069. [PMID: 34102081 PMCID: PMC8187014 DOI: 10.1098/rsob.210069] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 04/27/2021] [Indexed: 01/08/2023] Open
Abstract
The COVID-19 pandemic has wreaked unprecedented societal havoc worldwide. The infected individuals may present mild to severe symptoms, with nearly 20% of the confirmed patients impaired with significant complications, including multi-organ failure. Acute respiratory distress imposed by SARS-CoV-2 largely results from an aggravated cytokine storm and deregulated immune response. The forkhead box O (FoxO) transcription factors are reported to play a significant role in maintaining normal cell physiology by regulating survival, apoptosis, oxidative stress, development and maturation of T and B lymphocytes, secretion of inflammatory cytokines, etc. We propose a potent anti-inflammatory approach based on activation of the FoxO as an attractive strategy against the novel coronavirus. This regime will be focused on restoring redox and inflammatory homeostasis along with repair of the damaged tissue, activation of lymphocyte effector and memory cells. Repurposing FoxO activators as a means to alleviate the inflammatory burst following SARS-CoV-2 infection can prove immensely valuable in the ongoing pandemic and provide a reliable groundwork for enriching our repertoire of antiviral modalities for any such complication in the future. Altogether, our review highlights the possible efficacy of FoxO activation as a novel arsenal for clinical management of COVID-19.
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Affiliation(s)
- Pradeep Singh Cheema
- Department of Biochemistry, University of Delhi, South Campus, Biotech Building, 2nd Floor, Benito Juarez Road, Dhaula Kuan, New Delhi 110021, India
| | - Deeptashree Nandi
- Department of Biochemistry, University of Delhi, South Campus, Biotech Building, 2nd Floor, Benito Juarez Road, Dhaula Kuan, New Delhi 110021, India
| | - Alo Nag
- Department of Biochemistry, University of Delhi, South Campus, Biotech Building, 2nd Floor, Benito Juarez Road, Dhaula Kuan, New Delhi 110021, India
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224
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Rianto F, Hoang T, Revoori R, Sparks MA. Angiotensin receptors in the kidney and vasculature in hypertension and kidney disease. Mol Cell Endocrinol 2021; 529:111259. [PMID: 33781840 DOI: 10.1016/j.mce.2021.111259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 01/05/2021] [Accepted: 03/20/2021] [Indexed: 12/24/2022]
Abstract
Kidney disease, blood pressure determination, hypertension pathogenesis, and the renin-angiotensin system (RAS) are inextricably linked. Hence, understanding the RAS is pivotal to unraveling the pathophysiology of hypertension and the determinants to maintaining normal blood pressure. The RAS has been the subject of intense investigation for over a century. Moreover, medications that block the RAS are mainstay therapies in clinical medicine and have been shown to reduce morbidity and mortality in patients with diabetes, cardiovascular, and kidney diseases. The main effector peptide of the RAS is the interaction of the octapeptide- Ang II with its receptor. The type 1 angiotensin receptor (AT1R) is the effector receptor for Ang II. These G protein-coupled receptors (GPCRs) are ubiquitously expressed in a variety of cell lineages and tissues relevant to cardiovascular disease throughout the body. The advent of cell specific deletion of genes using Cre LoxP technology in mice has allowed for the identification of discreet actions of AT1Rs in blood pressure control and kidney disease. The kidney is one of the major targets of the RAS, which is responsible in maintaining fluid, electrolyte balance, and blood pressure. In this review we will discuss the role of AT1Rs in the kidney, vasculature, and immune cells and address their effects on hypertension and kidney disease.
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MESH Headings
- Angiotensin I/genetics
- Angiotensin I/metabolism
- Angiotensin II/genetics
- Angiotensin II/metabolism
- Angiotensin-Converting Enzyme 2/genetics
- Angiotensin-Converting Enzyme 2/metabolism
- Animals
- Blood Pressure/genetics
- Gene Expression Regulation
- Humans
- Hypertension/genetics
- Hypertension/metabolism
- Hypertension/pathology
- Kidney Tubules, Proximal/enzymology
- Kidney Tubules, Proximal/pathology
- Mice
- Mice, Knockout
- Peptide Fragments/genetics
- Peptide Fragments/metabolism
- Receptor, Angiotensin, Type 1/genetics
- Receptor, Angiotensin, Type 1/metabolism
- Receptor, Angiotensin, Type 2/genetics
- Receptor, Angiotensin, Type 2/metabolism
- Renal Insufficiency, Chronic/genetics
- Renal Insufficiency, Chronic/metabolism
- Renal Insufficiency, Chronic/pathology
- Renin-Angiotensin System/genetics
- Signal Transduction
- Water-Electrolyte Balance/genetics
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Affiliation(s)
- Fitra Rianto
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC, United States
| | - Thien Hoang
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC, United States
| | - Ritika Revoori
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC, United States
| | - Matthew A Sparks
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC, United States; Renal Section, Durham VA Health Care System, Durham, NC, United States.
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225
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Sparks MA, Dilmen E, Ralph DL, Rianto F, Hoang TA, Hollis A, Diaz EJ, Adhikari R, Chew G, Petretto EG, Gurley SB, McDonough AA, Coffman TM. Vascular control of kidney epithelial transporters. Am J Physiol Renal Physiol 2021; 320:F1080-F1092. [PMID: 33969697 PMCID: PMC8285646 DOI: 10.1152/ajprenal.00084.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/23/2021] [Accepted: 05/05/2021] [Indexed: 01/03/2023] Open
Abstract
A major pathway in hypertension pathogenesis involves direct activation of ANG II type 1 (AT1) receptors in the kidney, stimulating Na+ reabsorption. AT1 receptors in tubular epithelia control expression and stimulation of Na+ transporters and channels. Recently, we found reduced blood pressure and enhanced natriuresis in mice with cell-specific deletion of AT1 receptors in smooth muscle (SMKO mice). Although impaired vasoconstriction and preserved renal blood flow might contribute to exaggerated urinary Na+ excretion in SMKO mice, we considered whether alterations in Na+ transporter expression might also play a role; therefore, we carried out proteomic analysis of key Na+ transporters and associated proteins. Here, we show that levels of Na+-K+-2Cl- cotransporter isoform 2 (NKCC2) and Na+/H+ exchanger isoform 3 (NHE3) are reduced at baseline in SMKO mice, accompanied by attenuated natriuretic and diuretic responses to furosemide. During ANG II hypertension, we found widespread remodeling of transporter expression in wild-type mice with significant increases in the levels of total NaCl cotransporter, phosphorylated NaCl cotransporter (Ser71), and phosphorylated NKCC2, along with the cleaved, activated forms of the α- and γ-epithelial Na+ channel. However, the increases in α- and γ-epithelial Na+ channel with ANG II were substantially attenuated in SMKO mice. This was accompanied by a reduced natriuretic response to amiloride. Thus, enhanced urinary Na+ excretion observed after cell-specific deletion of AT1 receptors from smooth muscle cells is associated with altered Na+ transporter abundance across epithelia in multiple nephron segments. These findings suggest a system of vascular-epithelial in the kidney, modulating the expression of Na+ transporters and contributing to the regulation of pressure natriuresis.NEW & NOTEWORTHY The use of drugs to block the renin-angiotensin system to reduce blood pressure is common. However, the precise mechanism for how these medications control blood pressure is incompletely understood. Here, we show that mice lacking angiotensin receptors specifically in smooth muscle cells lead to alternation in tubular transporter amount and function. Thus, demonstrating the importance of vascular-tubular cross talk in the control of blood pressure.
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Affiliation(s)
- Matthew A Sparks
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina
- Renal Section, Durham Veterans Affairs Health Care System, Durham, North Carolina
| | - Emre Dilmen
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Donna L Ralph
- Department of Physiology and Neuroscience, Keck School of Medicine of the University of Southern California, Los Angeles, California
| | - Fitra Rianto
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Thien A Hoang
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Alison Hollis
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Edward J Diaz
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Rishav Adhikari
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Gabriel Chew
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore
| | - Enrico G Petretto
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore
| | - Susan B Gurley
- Division of Nephrology and Hypertension, Oregon Health & Science University, Portland, Oregon
| | - Alicia A McDonough
- Department of Physiology and Neuroscience, Keck School of Medicine of the University of Southern California, Los Angeles, California
| | - Thomas M Coffman
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina
- Renal Section, Durham Veterans Affairs Health Care System, Durham, North Carolina
- Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore
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226
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Kadam PS, Mueller SC, Ji H, Liu J, Pai AV, Ma J, Speth RC, Sandberg K. Modulation of the rat angiotensin type 1a receptor by an upstream short open reading frame. Peptides 2021; 140:170529. [PMID: 33744369 DOI: 10.1016/j.peptides.2021.170529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/23/2021] [Accepted: 03/09/2021] [Indexed: 10/21/2022]
Abstract
The rat angiotensin type 1a receptor (AT1aR) is a peptide hormone G protein-coupled receptor (GPCR) that plays a key role in electrolyte homeostasis and blood pressure control. There is a highly conserved short open reading frame (sORF) in exon 2 (E2) that is downstream from exon 1 (E1) and upstream of the AT1aR coding region located in exon 3 (E3). To determine the role of this E2 sORF in AT1aR signaling, human embryonic kidney-293 (HEK293) cells were transfected with plasmids containing AT1aR cDNA with either an intact or disrupted E2 sORF. The intact sORF attenuated the efficacy of angiotensin (Ang) II (p < 0.001) and sarcosine1,Ile4,Ile8-Ang II (SII), (p < 0.01) to activate AT1aR signaling through extracellular signal-related kinases 1/2 (ERK1/2). A time-course showed agonist-induced AT1aR-mediated ERK1/2 activation was slower in the presence of the intact compared to the disrupted sORF [Ang II: p < 0.01 and SII: p < 0.05]. Ang II-induced ERK1/2 activation was completely inhibited by the protein kinase C (PKC) inhibitor Ro 31-8220 regardless of whether the sORF was intact or disrupted. Flow cytometric analyses suggested the intact sORF improved cell survival; the percentage of live cells increased (p < 0.05) while the percentage of early apoptotic cells decreased (p < 0.01) in cells transfected with the AT1aR plasmid containing the intact sORF. These findings have implications for the regulation of AT1Rs in physiological and pathological conditions and warrant investigation of sORFs in the 5' leader sequence (5'LS) of other GPCRs.
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Affiliation(s)
- Parnika S Kadam
- Department of Biochemistry, Molecular and Cellular Biology, Georgetown University, Washington, DC, United States; Department of Medicine, Georgetown University, Washington, DC, United States
| | - Susette C Mueller
- Department of Oncology, Georgetown University, Washington, DC, United States
| | - Hong Ji
- Department of Medicine, Georgetown University, Washington, DC, United States
| | - Jun Liu
- Department of Medicine, Georgetown University, Washington, DC, United States
| | - Amrita V Pai
- Department of Biochemistry, Molecular and Cellular Biology, Georgetown University, Washington, DC, United States; Department of Medicine, Georgetown University, Washington, DC, United States
| | - Junfeng Ma
- Department of Oncology, Georgetown University, Washington, DC, United States
| | - Robert C Speth
- Department of Pharmacology and Physiology, Georgetown University, Washington, DC, United States; Department of Pharmaceutical Sciences, Nova Southeastern University, Fort Lauderdale, FL, United States
| | - Kathryn Sandberg
- Department of Medicine, Georgetown University, Washington, DC, United States.
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227
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Husková Z, Kikerlová S, Sadowski J, Alánová P, Sedláková L, Papoušek F, Neckář J. Increased Endogenous Activity of the Renin-Angiotensin System Reduces Infarct Size in the Rats with Early Angiotensin II-dependent Hypertension which Survive the Acute Ischemia/Reperfusion Injury. Front Pharmacol 2021; 12:679060. [PMID: 34122103 PMCID: PMC8193500 DOI: 10.3389/fphar.2021.679060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 05/11/2021] [Indexed: 01/13/2023] Open
Abstract
We investigated the role of the interaction between hypertension and the renin-angiotensin system in the pathophysiology of myocardial ischemia/reperfusion injury. We hypothesized that in the early phase of angiotensin II (ANG II)-dependent hypertension with developed left ventricular hypertrophy, cardioprotective mechanism(s) are fully activated. The experiments were performed in transgenic rats with inducible hypertension, noninduced rats served as controls. The early phase of ANG II-dependent hypertension was induced by five-days (5 days) dietary indole-3-carbinol administration. Cardiac hypertrophy, ANG II and ANG 1-7 levels, protein expression of their receptors and enzymes were determined. Separate groups were subjected to acute myocardial ischemia/reperfusion injury, and infarct size and ventricular arrhythmias were assessed. Induced rats developed marked cardiac hypertrophy accompanied by elevated ANG levels. Ischemia/reperfusion mortality was significantly higher in induced than noninduced rats (52.1 and 25%, respectively). The blockade of AT1 receptors with losartan significantly increased survival rate in both groups. Myocardial infarct size was significantly reduced after 5 days induction (by 11%), without changes after losartan treatment. In conclusion, we confirmed improved cardiac tolerance to ischemia/reperfusion injury in hypertensive cardiohypertrophied rats and found that activation of AT1 receptors by locally produced ANG II in the heart was not the mechanism underlying infarct size reduction.
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Affiliation(s)
- Zuzana Husková
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Soňa Kikerlová
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Petra Alánová
- Laboratory of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Lenka Sedláková
- Laboratory of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - František Papoušek
- Laboratory of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Jan Neckář
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Laboratory of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
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228
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Lebek S, Hegner P, Tafelmeier M, Rupprecht L, Schmid C, Maier LS, Arzt M, Wagner S. Female Patients With Sleep-Disordered Breathing Display More Frequently Heart Failure With Preserved Ejection Fraction. Front Med (Lausanne) 2021; 8:675987. [PMID: 34124106 PMCID: PMC8192825 DOI: 10.3389/fmed.2021.675987] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 04/21/2021] [Indexed: 01/04/2023] Open
Abstract
Objective: Sleep-disordered breathing (SDB) is a widespread disease that is often associated with heart failure (HF) with preserved ejection fraction (HFpEF). HFpEF is more frequent in women than in men, but detailed pathomechanisms remain unclear. We investigated HFpEF in women and men in a high-risk cohort with SDB monitoring. Methods and Results: Three hundred twenty-seven patients (84.4% men) undergoing elective coronary artery bypass grafting were prospectively subjected to SDB monitoring, and an apnea–hypopnea index (AHI) ≥15/h defined SDB. HF was classified according to current guidelines. HFpEF was significantly more frequent in SDB patients compared to those without SDB (28 vs. 17%, P = 0.016). This distribution was driven by an increased frequency of HFpEF in female SDB patients (48% vs. only 25% in male, P = 0.022). In accordance, female patients with SDB exhibited significantly more impaired diastolic left ventricular filling compared to men (echocardiographic E/e′). In contrast to men, in women, minimum oxygen saturation (O2min, measured by polygraphy, R2 = 0.470, P < 0.001) and time of oxygen saturation <90% (R2 = 0.165, P = 0.044) were significantly correlated with E/e′. Moreover, the correlation between O2min and E/e′ was significantly different in women compared to men (P < 0.001). Intriguingly, this association remained independent of clinical covariates in women [age, body mass index, systolic contractile dysfunction, diabetes mellitus, and glomerular filtration rate (GFR), R2 = 0.534, P = 0.042, multivariate regression analysis]. Since angiotensin II signaling has been mechanistically linked to HF, we measured protein expression of its cleavage enzyme ACE2 in human right atrial appendage biopsies (Western blot). Intriguingly, we found a significantly decreased ACE2 expression preferentially in women with SDB (2.66 ± 0.42 vs. 4.01 ± 2.47 in men with SDB, P = 0.005). In accordance, left ventricular mass index was significantly increased in women with SDB compared to women without SDB. Conclusion: In patients with SDB, HFpEF and diastolic dysfunction were more frequent in women compared to men. In contrast to men, the severity of SDB was associated with the degree of diastolic dysfunction in women. These insights might help to find sex-specific therapies for patients with sleep-disordered breathing and heart failure. Clinical Trial Registration: Unique identifier: NCT02877745, URL: http://www.clinicaltrials.gov.
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Affiliation(s)
- Simon Lebek
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Philipp Hegner
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Maria Tafelmeier
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Leopold Rupprecht
- Department of Cardiothoracic Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Christof Schmid
- Department of Cardiothoracic Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Lars Siegfried Maier
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Michael Arzt
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Stefan Wagner
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
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229
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Rojas A, Schneider I, Lindner C, Gonzàlez I, Morales MA. Receptor for advanced glycation end-products axis and coronavirus disease 2019 in inflammatory bowel diseases: A dangerous liaison? World J Gastroenterol 2021; 27:2270-2280. [PMID: 34040321 PMCID: PMC8130044 DOI: 10.3748/wjg.v27.i19.2270] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/22/2021] [Accepted: 04/14/2021] [Indexed: 02/06/2023] Open
Abstract
Compelling evidence supports the crucial role of the receptor for advanced glycation end-products (RAGE) axis activation in many clinical entities. Since the beginning of the coronavirus disease 2019 pandemic, there is an increasing concern about the risk and handling of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in inflammatory gastrointestinal disorders, such as inflammatory bowel diseases (IBD). However, clinical data raised during pandemic suggests that IBD patients do not have an increased risk of contracting SARS-CoV-2 infection or develop a more severe course of infection. In the present review, we intend to highlight how two potentially important contributors to the inflammatory response to SARS-CoV-2 infection in IBD patients, the RAGE axis activation as well as the cross-talk with the renin-angiotensin system, are dampened by the high expression of soluble forms of both RAGE and the angiotensin-converting enzyme (ACE) 2. The soluble form of RAGE functions as a decoy for its ligands, and soluble ACE2 seems to be an additionally attenuating contributor to RAGE axis activation, particularly by avoiding the transactivation of the RAGE axis that can be produced by the virus-mediated imbalance of the ACE/angiotensin II/angiotensin II receptor type 1 pathway.
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Affiliation(s)
- Armando Rojas
- Biomedical Research Labs, Medicine Faculty, Catholic University of Maule, Talca 3634000, Chile
| | - Iván Schneider
- Biomedical Research Labs, Medicine Faculty, Catholic University of Maule, Talca 3634000, Chile
| | - Cristian Lindner
- Biomedical Research Labs, Medicine Faculty, Catholic University of Maule, Talca 3634000, Chile
| | - Ileana Gonzàlez
- Biomedical Research Labs, Medicine Faculty, Catholic University of Maule, Talca 3634000, Chile
| | - Miguel Angel Morales
- Department of Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, University of Chile, Santiago 8320000, Chile
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230
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Circulating biomarkers to assess cardiovascular function in critically ill. Curr Opin Crit Care 2021; 27:261-268. [PMID: 33899816 DOI: 10.1097/mcc.0000000000000829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE OF REVIEW Circulatory shock is one of the most common reasons for ICU admission. Mortality rates in excess of 40% necessitate the rapid identification of high-risk patients, as well as the early assessment of effects of initiated treatments. There is an unmet medical need for circulating biomarkers that may improve patient stratification, predict responses to treatment interventions and may even be a target for novel therapies, enabling a better biological rationale to personalize therapy. RECENT FINDINGS Apart from established biomarkers such as lactate, ScvO2 or NT-pro-BNP, novel biomarkers, including adrenomedullin, angiopoietins, angiotensin I/II ratios, renin and DPP3 show promise, as they are all associated with well defined, therapeutically addressable molecular pathways that are dysregulated during circulatory shock. Although some of the therapies related to these biomarkers are still in preclinical stages of development, they may represent personalized treatment opportunities for patients in circulatory shock. SUMMARY From a molecular perspective, shock represents a highly heterologous syndrome, in which multiple unique pathways are dysregulated. Assessment of the status of these pathways with circulating biomarkers may provide a unique opportunity to detect specific phenotypes and implement personalized medicine in the treatment of circulatory shock.
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231
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Bahrami A, Sathyapalan T, Sahebkar A. The Role of Interleukin-18 in the Development and Progression of Atherosclerosis. Curr Med Chem 2021; 28:1757-1774. [PMID: 32338205 DOI: 10.2174/0929867327666200427095830] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/14/2020] [Accepted: 04/28/2020] [Indexed: 11/22/2022]
Abstract
Atherosclerosis (AS), as a chronic inflammatory disorder of the cardiovascular system, is one of the leading causes of ischemic heart disease, stroke and peripheral vascular disease. There is growing evidence on the role of innate and adaptive immunity in the pathogenesis of atherosclerosis. Interleukin-18 is one of the novel proinflammatory cytokines involved in atherogenesis, atherosclerotic plaque instability and plaque rupture. In this review, we overview the findings of preclinical and clinical studies about the role and mechanism of action of IL-18 in the pathogenesis of AS, which could offer novel prognostic and therapeutic approaches.
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Affiliation(s)
- Afsane Bahrami
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Thozhukat Sathyapalan
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, United Kingdom
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232
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Moussa BA, Hashem HMA, Alphonse Mahrouse M, Mahmoud ST. Synchronized determination of the novel heart failure combination therapy containing sacubitril calcium and valsartan by a validated spectrofluorimetric method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 253:119613. [PMID: 33667887 DOI: 10.1016/j.saa.2021.119613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
A sensitive and accurate spectrofluorimetric method was proposed for the determination of Sacubitril calcium and Valsartan simultaneously in binary mixture. The method was established on measuring the native fluorescence of Sacubitril calcium and Valsartan upon excitation at 240 nm in acetonitrile. The emission of Sacubitril calcium was measured at 615 nm. For the determination Valsartan a first derivative ratio method was employed to eliminate any spectral interference. The ratio emission spectra were achieved by dividing the emission spectra of various concentrations of Valsartan by the emission spectrum of Sacubitril calcium (100 ng/ml) then the first derivative of the obtained ratio emission spectra was recorded using the proper smoothing factor. The amplitude at 354.9 nm on the first derivative ratio emission spectrum was used to calculate the concentrations of Valsartan in presence of Sacubitril calcium. The method was linear over the concentration range 100-1000 ng/ml for both Sacubitril calcium and Valsartan. The mean accuracy values were found to be 99.32 ± 0.62 and 99.30 ± 0.70 for Sacubitril calcium and Valsartan, respectively. Statistical comparison between results obtained by the proposed method and a reported method for this drugs showed no significant difference. This developed method was used for the quantitative determination of Sacubitril calcium and Valsartan in both pure and pharmaceutical dosage form.
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Affiliation(s)
- Bahia Abbas Moussa
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo 11562, Egypt
| | - Hanaa M A Hashem
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo 11562, Egypt
| | - Marianne Alphonse Mahrouse
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo 11562, Egypt
| | - Sally Tarek Mahmoud
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo 11562, Egypt.
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233
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Zhang Y, Yang X, Li Z, Bu K, Li T, Ma Z, Wang B, Ma L, Lu H, Zhang K, Liu L, Zhao Y, Zhu Y, Qin J, Cui J, Liu L, Liu S, Fan P, Liu X. Pyk2/MCU Pathway as a New Target for Reversing Atherosclerosis. Front Cell Dev Biol 2021; 9:651579. [PMID: 34026753 PMCID: PMC8134689 DOI: 10.3389/fcell.2021.651579] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/16/2021] [Indexed: 01/08/2023] Open
Abstract
Objective: Multiple mechanisms including vascular endothelial cell damage have a critical role in the formation and development of atherosclerosis (AS), but the specific molecular mechanisms are not exactly clarified. This study aims to determine the possible roles of proline-rich tyrosine kinase 2 (Pyk2)/mitochondrial calcium uniporter (MCU) pathway in AS mouse model and H2O2-induced endothelial cell damage model and explore its possible mechanisms. Approach and Results: The AS mouse model was established using apolipoprotein E-knockout (ApoE–/–) mice that were fed with a high-fat diet. It was very interesting to find that Pyk2/MCU expression was significantly increased in the artery wall of atherosclerotic mice and human umbilical vein endothelial cells (HUVECs) attacked by hydrogen peroxide (H2O2). In addition, down-regulation of Pyk2 by short hairpin RNA (shRNA) protected HUVECs from H2O2 insult. Furthermore, treatment with rosuvastatin on AS mouse model and H2O2-induced HUVEC injury model showed a protective effect against AS by inhibiting the Pyk2/MCU pathway, which maintained calcium balance, prevented the mitochondrial damage and reactive oxygen species production, and eventually inhibited cell apoptosis. Conclusion: Our results provide important insight into the initiation of the Pyk2/MCU pathway involved in AS-related endothelial cell damage, which may be a new promising target for atherosclerosis intervention.
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Affiliation(s)
- Yingzhen Zhang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China.,Department of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Xiaoli Yang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China.,Affiliated Hospital of Hebei University of Engineering, Handan, China
| | - Zhongzhong Li
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Kailin Bu
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Tong Li
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhizhao Ma
- Neurosurgery Department, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Binbin Wang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Lina Ma
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Honglin Lu
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Kun Zhang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Luji Liu
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yanying Zhao
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yipu Zhu
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jin Qin
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Junzhao Cui
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Lin Liu
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Shuxia Liu
- Department of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Ping Fan
- Department of Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Xiaoyun Liu
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, China.,Neuroscience Research Center, Medicine and Health Institute, Hebei Medical University, Shijiazhuang, China
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234
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Stoyell-Conti FF, Itty S, Abraham C, Rigatto K, West CA, Speth RC. 125I-Angiotensin 1-7 binds to a different site than angiotensin 1-7 in tissue membrane preparations. Endocrine 2021; 72:529-538. [PMID: 33415576 DOI: 10.1007/s12020-020-02572-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/24/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE To study the receptor for Angiotensin (Ang) 1-7 using a radioligand (125I-Ang 1-7)-binding assay. For more than a decade, Mas has been viewed as the receptor for Ang 1-7; however, Ang 1-7 binding has not been pharmacologically characterized in tissue membrane preparations. METHODS Radioligand-binding assays were carried out using tissue membrane preparations using radioiodinated Angiotensin 1-7 (125I-Ang 1-7) to characterize its binding site. Non-radioactive 127I-Ang 1-7 was used to test if the addition of an iodine to the tyrosine4 moiety of Ang 1-7 changes the ability of Ang 1-7 to competitively inhibit 125I-Ang 1-7 binding. RESULTS 125I-Ang 1-7 binds saturably, with moderately high affinity (10-20 nM) to a binding site in rat liver membranes that is displaceable by 127I-Ang 1-7 at nanomolar concentrations (IC50 = 62 nM) while Ang 1-7 displaces at micromolar concentrations (IC50 = 80 µM) at ~22 °C. This binding was also displaceable by inhibitors of metalloproteases at room temperature. This suggests that 125I-Ang 1-7 binds to MMPs and/or ADAMs as well as other liver membrane elements at ~ 22 °C. However, when 125I-Ang 1-7-binding assays were run at 0-4 °C, the same MMP inhibitors did not effectively compete for 125I-Ang 1-7. CONCLUSIONS The addition of an iodine molecule to the tyrosine in position 4 of Ang 1-7 drastically changes the binding characteristics of this peptide making it unsuitable for characterization of Ang 1-7 receptors.
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Affiliation(s)
- Filipe F Stoyell-Conti
- College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, USA
- Department of Surgery, University of Miami, Miami, FL, USA
| | - Sarin Itty
- Halmos College of Natural Science & Oceanography, Nova Southeastern University, Fort Lauderdale, FL, USA
- Kiran P. Patel College of Osteopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Christy Abraham
- Halmos College of Natural Science & Oceanography, Nova Southeastern University, Fort Lauderdale, FL, USA
- Kiran P. Patel College of Osteopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Katya Rigatto
- Institute for Neuro-Immune Medicine, Nova Southeastern University, Fort Lauderdale, FL, USA
- Laboratório de Fisiologia Translacional, Universidade Federal de Ciências da Saúde de Porto, Alegre, RS, Brazil
| | - Crystal A West
- Department of Biology, Appalachian State University, North Carolina Research Campus, Kannapolis, NC, USA
| | - Robert C Speth
- College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, USA.
- Department of Pharmacology and Physiology, School of Medicine, Georgetown University, Washington, DC, USA.
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235
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Ali FEM, Mohammedsaleh ZM, Ali MM, Ghogar OM. Impact of cytokine storm and systemic inflammation on liver impairment patients infected by SARS-CoV-2: Prospective therapeutic challenges. World J Gastroenterol 2021; 27:1531-1552. [PMID: 33958841 PMCID: PMC8058655 DOI: 10.3748/wjg.v27.i15.1531] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/17/2021] [Accepted: 03/29/2021] [Indexed: 02/06/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) is a devastating worldwide pandemic infection caused by a severe acute respiratory syndrome namely coronavirus 2 (SARS-CoV-2) that is associated with a high spreading and mortality rate. On the date this review was written, SARS-CoV-2 infected about 96 million people and killed about 2 million people. Several arguments disclosed the high mortality of COVID-19 due to acute respiratory distress syndrome or change in the amount of angiotensin-converting enzyme 2 (ACE2) receptor expression or cytokine storm strength production. In a similar pattern, hepatic impairment patients co-infected with SARS-CoV-2 exhibited overexpression of ACE2 receptors and cytokine storm overwhelming, which worsens the hepatic impairment and increases the mortality rate. In this review, the impact of SARS-CoV-2 on hepatic impairment conditions we overviewed. Besides, we focused on the recent studies that indicated cytokine storm as well as ACE2 as the main factors for high COVID-19 spreading and mortality while hinting at the potential therapeutic strategies.
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Affiliation(s)
- Fares E M Ali
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Zuhair M Mohammedsaleh
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Mahmoud M Ali
- Pre-graduated students, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Osama M Ghogar
- Pre-graduated students, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
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236
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Angiotensin-II Modulates GABAergic Neurotransmission in the Mouse Substantia Nigra. eNeuro 2021; 8:ENEURO.0090-21.2021. [PMID: 33771900 PMCID: PMC8174047 DOI: 10.1523/eneuro.0090-21.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 03/22/2021] [Indexed: 11/26/2022] Open
Abstract
GABAergic projections neurons of the substantia nigra reticulata (SNr), through an extensive network of dendritic arbors and axon collaterals, provide robust inhibitory input to neighboring dopaminergic neurons in the substantia nigra compacta (SNc). Angiotensin-II (Ang-II) receptor signaling increases SNc dopaminergic neuronal sensitivity to insult, thus rendering these cells susceptible to dysfunction and destruction. However, the mechanisms by which Ang-II regulates SNc dopaminergic neuronal activity are unclear. Given the complex relationship between SN dopaminergic and GABAergic neurons, we hypothesized that Ang-II could regulate SNc dopaminergic neuronal activity directly and indirectly by modulating SNr GABAergic neurotransmission. Here, using transgenic mice, slice electrophysiology, and optogenetics, we provide evidence of an AT1 receptor-mediated signaling mechanism in SNr GABAergic neurons where Ang-II suppresses electrically-evoked neuronal output by facilitating postsynaptic GABAA receptors (GABAARs) and prolonging the action potential (AP) duration. Unexpectedly, Ang-II had no discernable effects on the electrical properties of SNc dopaminergic neurons. Also, and indicating a nonlinear relationship between electrical activity and neuronal output, following phasic photoactivation of SNr GABAergic neurons, Ang-II paradoxically enhanced the feedforward inhibitory input to SNc dopaminergic neurons. In sum, our observations describe an increasingly complex and heterogeneous response of the SN to Ang-II by revealing cell-specific responses and nonlinear effects on intranigral GABAergic neurotransmission. Our data further implicate the renin-angiotensin-system (RAS) as a functionally relevant neuromodulator in the substantia nigra, thus underscoring a need for additional inquiry.
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237
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Rahmawati PL, Tini K, Susilawathi NM, Wijayanti IAS, Samatra DP. Pathomechanism and Management of Stroke in COVID-19: Review of Immunopathogenesis, Coagulopathy, Endothelial Dysfunction, and Downregulation of ACE2. J Clin Neurol 2021; 17:155-163. [PMID: 33835735 PMCID: PMC8053537 DOI: 10.3988/jcn.2021.17.2.155] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 11/24/2020] [Accepted: 11/24/2020] [Indexed: 12/15/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) can reportedly manifest as an acute stroke, with most cases presenting as large vessel ischemic stroke in patients with or without comorbidities. The exact pathomechanism of stroke in COVID-19 remains ambiguous. The findings of previous studies indicate that the most likely underlying mechanisms are cerebrovascular pathological conditions following viral infection, inflammation-induced endothelial dysfunction, and hypercoagulability. Acute endothelial damage due to inflammation triggers a coagulation cascade, thrombosis propagation, and destabilization of atherosclerosis plaques, leading to large-vessel occlusion and plaque ulceration with concomitant thromboemboli, and manifests as ischemic stroke. Another possible mechanism is the downregulation of angiotensin-converting enzyme 2 as the target action of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2). Acute stroke management protocols need to be modified during the COVID-19 pandemic in order to adequately manage stroke patients with COVID-19.
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Affiliation(s)
- Putu Lohita Rahmawati
- Department of Neurology, Udayana University, Sanglah General Hospital, Denpasar, Bali, Indonesia.
| | - Kumara Tini
- Department of Neurology, Udayana University, Udayana University Hospital, Bali, Indonesia
| | - Ni Made Susilawathi
- Department of Neurology, Udayana University, Udayana University Hospital, Bali, Indonesia
| | - I A Sri Wijayanti
- Department of Neurology, Udayana University, Udayana University Hospital, Bali, Indonesia
| | - Dpg Purwa Samatra
- Department of Neurology, Udayana University, Udayana University Hospital, Bali, Indonesia
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238
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Sahadevan P, Allen BG. Isolation and culture of adult murine cardiac atrial and ventricular fibroblasts and myofibroblasts. Methods 2021; 203:187-195. [PMID: 33838270 DOI: 10.1016/j.ymeth.2021.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/02/2021] [Accepted: 04/03/2021] [Indexed: 01/05/2023] Open
Abstract
Cardiac fibroblasts play a critical role in extracellular matrix homeostasis, wound healing, and cardiac interstitial fibrosis: the latter being a pathophysiological response to a chronic increase in afterload. Using a standard protocol to isolate cardiac fibroblasts and maintain them in their quiescent phenotype in vitro will enable a better understanding of cardiac fibroblast biology and their role in the response to profibrotic stimuli. Here, we describe an enzymatic method for isolating cardiac fibroblasts. The resulting cells are maintained on either a collagen-coated hydrogel-bound polystyrene (compliant) substrate or standard polystyrene culture dishes (non-compliant) to obtain quiescent fibroblasts and activated fibroblasts (myofibroblasts), respectively. Fibroblasts maintained on a non-compliant substrate developed a myofibroblast phenotype, in which the αSMA immunoreactivity was markedly elevated and incorporated into the stress fibers. In contrast, ventricular and atrial fibroblasts retain their quiescent phenotype for up to 3 passages when maintained on a compliant substrate. Hence, the methodology described herein provides a simple and reproducible way to isolate adult murine atrial and ventricular cardiac fibroblasts from a single animal and, by selecting a substrate with the appropriate compliance, examine the mediators of fibroblast activation or inactivation.
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Affiliation(s)
- Pramod Sahadevan
- Montreal Heart Institute, 5000 Belanger St., Montréal, Québec H1T 1C8, Canada.
| | - Bruce G Allen
- Montreal Heart Institute, 5000 Belanger St., Montréal, Québec H1T 1C8, Canada; Department of Biochemistry and Molecular Medicine, Université de Montréal, Montréal, Québec H3C 3J7, Canada; Department of Pharmacology and Physiology, Université de Montréal, Montréal, Québec H3C 3J7, Canada; Department of Medicine, Université de Montréal, Montréal, Québec H3C 3J7, Canada.
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239
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Duan H, Zhang Q, Liu J, Li R, Wang D, Peng W, Wu C. Suppression of apoptosis in vascular endothelial cell, the promising way for natural medicines to treat atherosclerosis. Pharmacol Res 2021; 168:105599. [PMID: 33838291 DOI: 10.1016/j.phrs.2021.105599] [Citation(s) in RCA: 111] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 03/09/2021] [Accepted: 04/02/2021] [Indexed: 12/16/2022]
Abstract
Atherosclerosis, a chronic multifactorial disease, is closely related to the development of cardiovascular diseases and is one of the predominant causes of death worldwide. Normal vascular endothelial cells play an important role in maintaining vascular homeostasis and inhibiting atherosclerosis by regulating vascular tension, preventing thrombosis and regulating inflammation. Currently, accumulating evidence has revealed that endothelial cell apoptosis is the first step of atherosclerosis. Excess apoptosis of endothelial cells induced by risk factors for atherosclerosis is a preliminary event in atherosclerosis development and might be a target for preventing and treating atherosclerosis. Interestingly, accumulating evidence shows that natural medicines have great potential to treat atherosclerosis by inhibiting endothelial cell apoptosis. Therefore, this paper reviewed current studies on the inhibitory effect of natural medicines on endothelial cell apoptosis and summarized the risk factors that may induce endothelial cell apoptosis, including oxidized low-density lipoprotein (ox-LDL), reactive oxygen species (ROS), angiotensin II (Ang II), tumor necrosis factor-α (TNF-α), homocysteine (Hcy) and lipopolysaccharide (LPS). We expect this review to highlight the importance of natural medicines, including extracts and monomers, in the treatment of atherosclerosis by inhibiting endothelial cell apoptosis and provide a foundation for the development of potential antiatherosclerotic drugs from natural medicines.
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Affiliation(s)
- Huxinyue Duan
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, No. 1166, Liutai Avenue, Chengdu 611137, PR China
| | - Qing Zhang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, No. 1166, Liutai Avenue, Chengdu 611137, PR China
| | - Jia Liu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, No. 1166, Liutai Avenue, Chengdu 611137, PR China
| | - Ruolan Li
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, No. 1166, Liutai Avenue, Chengdu 611137, PR China
| | - Dan Wang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, No. 1166, Liutai Avenue, Chengdu 611137, PR China
| | - Wei Peng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, No. 1166, Liutai Avenue, Chengdu 611137, PR China.
| | - Chunjie Wu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, No. 1166, Liutai Avenue, Chengdu 611137, PR China.
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240
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Zhang RY, Wu CM, Hu XM, Lin XM, Hua YN, Chen JJ, Ding L, He X, Yang B, Ping BH, Zheng L, Wang Q. LncRNA AC105942.1 Downregulates hnRNPA2/B1 to Attenuate Vascular Smooth Muscle Cells Proliferation. DNA Cell Biol 2021; 40:652-661. [PMID: 33781092 DOI: 10.1089/dna.2020.6451] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The abnormal proliferation of vascular smooth muscle cells (VSMCs) is crucial in the atherosclerosis. Although long noncoding RNAs (lncRNAs) are implicated in a variety of diseases, their roles in activation of VSMCs proliferation and vascular disorder diseases are not well understood. In addition, heterogeneous nuclear ribonucleoprotein A2/B1 (hnRNPA2/B1) was reported to participate in lncRNAs-mediated function. Herein, we propose to investigate the role of lncRNA AC105942.1 and hnRNPA2/B1 in pathological VSMCs proliferation and the possible mechanisms in vitro. We have identified that lncRNA AC105942.1 was downregulated and hnRNPA2/B1 was upregulated in atherosclerotic plaques compared with normal artery tissues. Enhanced lncRNA AC105942.1 could noticeably inhibit Ang II-induced VSMCs proliferation. Further investigation suggested that lncRNA AC105942.1 could downregulate the expression of hnRNPA2/B1 and then regulate the level of CDK4 and p27. Taken together, our study indicated that lncRNA AC105942.1 downregulated hnRNPA2B1 to protect against the atherosclerosis by suppressing VSMCs proliferation. LncRNA AC105942.1 and hnRNPA2/B1 could represent potential therapeutic and diagnostic targets to atherosclerosis-related diseases.
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Affiliation(s)
- Ru-Yi Zhang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Chang-Meng Wu
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiu-Mei Hu
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiao-Min Lin
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yu-Neng Hua
- Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jun-Jiang Chen
- Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Li Ding
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xin He
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Biao Yang
- Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Bao-Hong Ping
- Hui Qiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Lei Zheng
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qian Wang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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241
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Peters EL, Bogaard HJ, Vonk Noordegraaf A, de Man FS. Neurohormonal modulation in pulmonary arterial hypertension. Eur Respir J 2021; 58:13993003.04633-2020. [PMID: 33766951 PMCID: PMC8551560 DOI: 10.1183/13993003.04633-2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 03/13/2021] [Indexed: 12/15/2022]
Abstract
Pulmonary hypertension is a fatal condition of elevated pulmonary pressures, complicated by right heart failure. Pulmonary hypertension appears in various forms; one of those is pulmonary arterial hypertension (PAH) and is particularly characterised by progressive remodelling and obstruction of the smaller pulmonary vessels. Neurohormonal imbalance in PAH patients is associated with worse prognosis and survival. In this back-to-basics article on neurohormonal modulation in PAH, we provide an overview of the pharmacological and nonpharmacological strategies that have been tested pre-clinically and clinically. The benefit of neurohormonal modulation strategies in PAH patients has been limited by lack of insight into how the neurohormonal system is changed throughout the disease and difficulties in translation from animal models to human trials. We propose that longitudinal and individual assessments of neurohormonal status are required to improve the timing and specificity of neurohormonal modulation strategies. Ongoing developments in imaging techniques such as positron emission tomography may become helpful to determine neurohormonal status in PAH patients in different disease stages and optimise individual treatment responses.
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Affiliation(s)
- Eva L Peters
- Dept of Pulmonology, Amsterdam UMC, Amsterdam, The Netherlands.,Dept of Physiology, Amsterdam UMC, Amsterdam, The Netherlands
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242
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ACE2 as therapeutic agent. Clin Sci (Lond) 2021; 134:2581-2595. [PMID: 33063820 DOI: 10.1042/cs20200570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/28/2020] [Accepted: 10/01/2020] [Indexed: 12/11/2022]
Abstract
The angiotensin-converting enzyme 2 (ACE2) has emerged as a critical regulator of the renin-angiotensin system (RAS), which plays important roles in cardiovascular homeostasis by regulating vascular tone, fluid and electrolyte balance. ACE2 functions as a carboxymonopeptidase hydrolyzing the cleavage of a single C-terminal residue from Angiotensin-II (Ang-II), the key peptide hormone of RAS, to form Angiotensin-(1-7) (Ang-(1-7)), which binds to the G-protein-coupled Mas receptor and activates signaling pathways that counteract the pathways activated by Ang-II. ACE2 is expressed in a variety of tissues and overwhelming evidence substantiates the beneficial effects of enhancing ACE2/Ang-(1-7)/Mas axis under many pathological conditions in these tissues in experimental models. This review will provide a succinct overview on current strategies to enhance ACE2 as therapeutic agent, and discuss limitations and future challenges. ACE2 also has other functions, such as acting as a co-factor for amino acid transport and being exploited by the severe acute respiratory syndrome coronaviruses (SARS-CoVs) as cellular entry receptor, the implications of these functions in development of ACE2-based therapeutics will also be discussed.
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243
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Miklós Z, Wafa D, Nádasy GL, Tóth ZE, Besztercei B, Dörnyei G, Laska Z, Benyó Z, Ivanics T, Hunyady L, Szekeres M. Angiotensin II-Induced Cardiac Effects Are Modulated by Endocannabinoid-Mediated CB 1 Receptor Activation. Cells 2021; 10:724. [PMID: 33805075 PMCID: PMC8064086 DOI: 10.3390/cells10040724] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/13/2021] [Accepted: 03/21/2021] [Indexed: 12/02/2022] Open
Abstract
Angiotensin II (Ang II) has various cardiac effects and causes vasoconstriction. Ang II activates the type-1 angiotensin receptor-Gq/11 signaling pathway resulting in the release of 2-arachidonoylglycerol (2-AG). We aimed to investigate whether cardiac Ang II effects are modulated by 2-AG-release and to identify the role of type-1 cannabinoid receptors (CB1R) in these effects. Expression of CB1R in rat cardiac tissue was confirmed by immunohistochemistry. To characterize short-term Ang II effects, increasing concentrations of Ang II (10-9-10-7 M); whereas to assess tachyphylaxis, repeated infusions of Ang II (10-7 M) were administered to isolated Langendorff-perfused rat hearts. Ang II infusions caused a decrease in coronary flow and ventricular inotropy, which was more pronounced during the first administration. CB agonist 2-AG and WIN55,212-2 administration to the perfusate enhanced coronary flow. The flow-reducing effect of Ang II was moderated in the presence of CB1R blocker O2050 and diacylglycerol-lipase inhibitor Orlistat. Our findings indicate that Ang II-induced cardiac effects are modulated by simultaneous CB1R-activation, most likely due to 2-AG-release during Ang II signalling. In this combined effect, the response to 2-AG via cardiac CB1R may counteract the positive inotropic effect of Ang II, which may decrease metabolic demand and augment Ang II-induced coronary vasoconstriction.
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Affiliation(s)
- Zsuzsanna Miklós
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (D.W.); (B.B.); (Z.L.); (Z.B.); (T.I.)
| | - Dina Wafa
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (D.W.); (B.B.); (Z.L.); (Z.B.); (T.I.)
| | - György L. Nádasy
- Department of Physiology, Semmelweis University, 1094 Budapest, Hungary; (G.L.N.); (L.H.)
| | - Zsuzsanna E. Tóth
- Department of Anatomy, Histology and Embryology, Semmelweis University, 1094 Budapest, Hungary;
| | - Balázs Besztercei
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (D.W.); (B.B.); (Z.L.); (Z.B.); (T.I.)
| | - Gabriella Dörnyei
- Department of Morphology and Physiology, Semmelweis University, 1088 Budapest, Hungary;
| | - Zsófia Laska
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (D.W.); (B.B.); (Z.L.); (Z.B.); (T.I.)
| | - Zoltán Benyó
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (D.W.); (B.B.); (Z.L.); (Z.B.); (T.I.)
| | - Tamás Ivanics
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary; (D.W.); (B.B.); (Z.L.); (Z.B.); (T.I.)
| | - László Hunyady
- Department of Physiology, Semmelweis University, 1094 Budapest, Hungary; (G.L.N.); (L.H.)
- Laboratory of Molecular Physiology, Semmelweis University and Hungarian Academy of Sciences, 1094 Budapest, Hungary
| | - Mária Szekeres
- Department of Physiology, Semmelweis University, 1094 Budapest, Hungary; (G.L.N.); (L.H.)
- Department of Morphology and Physiology, Semmelweis University, 1088 Budapest, Hungary;
- Laboratory of Molecular Physiology, Semmelweis University and Hungarian Academy of Sciences, 1094 Budapest, Hungary
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244
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Brain angiotensin converting enzyme-2 in central cardiovascular regulation. Clin Sci (Lond) 2021; 134:2535-2547. [PMID: 33016313 DOI: 10.1042/cs20200483] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/18/2020] [Accepted: 09/22/2020] [Indexed: 12/24/2022]
Abstract
The brain renin-angiotensin system (RAS) plays an important role in the regulation of autonomic and neuroendocrine functions, and maintains cardiovascular homeostasis. Ang-II is the major effector molecule of RAS and exerts most of its physiological functions, including blood pressure (BP) regulation, via activation of AT1 receptors. Dysregulation of brain RAS in the central nervous system results in increased Ang-II synthesis that leads to sympathetic outflow and hypertension. Brain angiotensin (Ang) converting enzyme-2 (ACE2) was discovered two decades ago as an RAS component, exhibiting a counter-regulatory role and opposing the adverse cardiovascular effects produced by Ang-II. Studies using synthetic compounds that can sustain the elevation of ACE2 activity or genetically overexpressed ACE2 in specific brain regions found various beneficial effects on cardiovascular function. More recently, ACE2 has been shown to play critical roles in neuro-inflammation, gut dysbiosis and the regulation of stress and anxiety-like behaviors. In the present review, we aim to highlight the anatomical locations and functional implication of brain ACE2 related to its BP regulation via modulation of the sympathetic nervous system and discuss the recent developments and future directions in the ACE2-mediated central cardiovascular regulation.
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245
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Shiraishi Y, Ishigami N, Kujiraoka T, Sato A, Fujita M, Ido Y, Adachi T. Deletion of Superoxide Dismutase 1 Blunted Inflammatory Aortic Remodeling in Hypertensive Mice under Angiotensin II Infusion. Antioxidants (Basel) 2021; 10:antiox10030471. [PMID: 33809716 PMCID: PMC8002308 DOI: 10.3390/antiox10030471] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/11/2021] [Accepted: 03/15/2021] [Indexed: 02/05/2023] Open
Abstract
Superoxide dismutase (SOD) is an enzyme that catalyzes the dismutation of two superoxide anions (O2·−) into hydrogen peroxide (H2O2) and oxygen (O2) and is generally known to protect against oxidative stress. Angiotensin II (AngII) causes vascular hypertrophic remodeling which is associated with H2O2 generation. The aim of this study is to investigate the role of cytosolic SOD (SOD1) in AngII-induced vascular hypertrophy. We employed C57/BL6 mice (WT) and SOD1 deficient mice (SOD1−/−) with the same background. They received a continuous infusion of saline or AngII (3.2 mg/kg/day) for seven days. The blood pressures were equally elevated at 1.5 times with AngII, however, vascular hypertrophy was blunted in SOD1−/− mice compared to WT mice (WT mice 91.9 ± 1.13 µm versus SOD1−/− mice 68.4 ± 1.41 µm p < 0.001). The elevation of aortic interleukin 6 (IL-6) and phosphorylation of pro-inflammatory STAT3 due to AngII were also blunted in SOD1−/− mice’s aortas. In cultured rat vascular smooth muscle cells (VSMCs), reducing expression of SOD1 with siRNA decreased AngII induced IL-6 release as well as phosphorylation of STAT3. Pre-incubation with polyethylene glycol (PEG)-catalase also attenuated phosphorylation of STAT3 due to AngII. These results indicate that SOD1 in VSMCs plays a role in vascular hypertrophy due to increased inflammation caused by AngII, probably via the production of cytosolic H2O2.
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Affiliation(s)
- Yasunaga Shiraishi
- Division of Environmental Medicine, National Defense Medical College Research Institute, 3-2 Namiki, Tokorozawa Saitama 359-8513, Japan;
- Correspondence: ; Tel.: +81-4-2995-1626
| | - Norio Ishigami
- Department of Internal Medicine, Division of Cardiovascular Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa Saitama 359-8513, Japan; (N.I.); (T.K.); (A.S.); (Y.I.); (T.A.)
| | - Takehiko Kujiraoka
- Department of Internal Medicine, Division of Cardiovascular Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa Saitama 359-8513, Japan; (N.I.); (T.K.); (A.S.); (Y.I.); (T.A.)
| | - Atsushi Sato
- Department of Internal Medicine, Division of Cardiovascular Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa Saitama 359-8513, Japan; (N.I.); (T.K.); (A.S.); (Y.I.); (T.A.)
| | - Masanori Fujita
- Division of Environmental Medicine, National Defense Medical College Research Institute, 3-2 Namiki, Tokorozawa Saitama 359-8513, Japan;
| | - Yasuo Ido
- Department of Internal Medicine, Division of Cardiovascular Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa Saitama 359-8513, Japan; (N.I.); (T.K.); (A.S.); (Y.I.); (T.A.)
| | - Takeshi Adachi
- Department of Internal Medicine, Division of Cardiovascular Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa Saitama 359-8513, Japan; (N.I.); (T.K.); (A.S.); (Y.I.); (T.A.)
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Akpinar E, Kutlu Z, Kose D, Aydin P, Tavaci T, Bayraktutan Z, Yuksel TN, Yildirim S, Eser G, Dincer B. Protective Effects of Idebenone against Sepsis Induced Acute Lung Damage. J INVEST SURG 2021; 35:560-568. [PMID: 33722148 DOI: 10.1080/08941939.2021.1898063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND/AIMS Sepsis is an uncontrolled systemic infection, withcomplex pathophysiology that may result in acute lung organ damage and cause multiple organ failure. Although much research has been conducted to illuminate sepsis's complex pathophysiology, sepsis treatment protocols are limited, and sepsis remains an important cause of mortality andmorbidity in intensive care units.Various studies have shown that idebenone (IDE) possesses strong antioxidant properties, which inhibit lipid peroxidation and protect cells from oxidative damage. The present study aimed to evaluate the protective effects of IDE against lung injury in a cecal ligation and puncture (CLP)-induced sepsis rat model. METHODS Male albino Wistar rats were used. The animals were divided into a healthy control (no treatment), CLP, IDE control (200 mg/kg), and CLP + IDE subgroups (50 mg/kg, 100 mg/kg, and 200 mg/kg), with nine rats in each group.IDE was administered 1 h after CLP induction.To evaluate the protective effects of IDE, lung tissues were collected 16 h after sepsis for biochemical, immunohistochemical staining, and histopathological examination. RESULTS IDE significantly ameliorated sepsis-induced disturbances in oxidative stress-related factors, with its effects increasing in accordance with the dose.IDE also abolished histopathological changes in lung tissues associated with CLP.Furthermore, interleukin 1 beta (IL-1β)and tumor necrosis factor-alpha (TNF-α) immunopositivity markedly decreased in the septic rats following IDE treatment. CONCLUSIONS IDE largely mitigated the inflammatory response in sepsis-induced lung injury by decreasing free radicals and preventing lipid peroxidation. The results suggest that IDE may represent a potential novel therapeutic drug for sepsis treatment.
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Affiliation(s)
- Erol Akpinar
- Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Zerrin Kutlu
- Department of Biochemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Duygu Kose
- Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey.,Clinical Research, Development and Design Application and Research Center, Ataturk University, Erzurum, Turkey
| | - Pelin Aydin
- Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey.,Department of Anesthesiology and Reanimation, Educational and Research Hospital, Erzurum, Turkey
| | - Taha Tavaci
- Department of Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Zafer Bayraktutan
- Department of Biochemistry, Faculty of Medicine, Ataturk University, Erzurum, Turkey
| | - Tugba Nurcan Yuksel
- Department of Pharmacology, Faculty of Medicine, Namik Kemal University, Tekirdag, Turkey
| | - Serkan Yildirim
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Gizem Eser
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - Busra Dincer
- Department of Pharmacology, Faculty of Pharmacy, Erzincan Binali Yildirim University, Erzincan, Turkey
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Abstract
Growing evidence implicates the renin-angiotensin system (RAS) in multiple facets of neuropathic pain (NP). This narrative review focuses primarily on the major bioactive RAS peptide, Angiotensin II (Ang II), and its receptors, namely type 1 (AT1R) and type 2 (AT2R). Both receptors are involved in the development of NP and represent potential therapeutic targets. We first discuss the potential role of Ang II receptors in modulation of NP in the central nervous system. Ang II receptor expression is widespread in circuits associated with the perception and modulation of pain, but more studies are required to fully characterize receptor distribution, downstream signaling, and therapeutic potential of targeting the central nervous system RAS in NP. We then describe the peripheral neuronal and nonneuronal distribution of the RAS, and its contribution to NP. Other RAS modulators (such as Ang (1-7)) are briefly reviewed as well. AT1R antagonists are analgesic across different pain models, including NP. Several studies show neuronal protection and outgrowth downstream of AT2R activation, which may lead to the use of AT2R agonists in NP. However, blockade of AT2R results in analgesia. Furthermore, expression of the RAS in the immune system and a growing appreciation of neuroimmune crosstalk in NP add another layer of complexity and therapeutic potential of targeting this pathway. A growing number of human studies also hint at the analgesic potential of targeting Ang II signaling. Altogether, Ang II receptor signaling represents a promising, far-reaching, and novel strategy to treat NP.
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248
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Angiotensin II-induced cardiomyocyte hypertrophy: A complex response dependent on intertwined pathways. REVISTA PORTUGUESA DE CARDIOLOGIA (ENGLISH EDITION) 2021. [DOI: 10.1016/j.repce.2021.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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249
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Akhigbe R, Ajayi A. The impact of reactive oxygen species in the development of cardiometabolic disorders: a review. Lipids Health Dis 2021; 20:23. [PMID: 33639960 PMCID: PMC7916299 DOI: 10.1186/s12944-021-01435-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 01/26/2021] [Indexed: 02/07/2023] Open
Abstract
Oxidative stress, an alteration in the balance between reactive oxygen species (ROS) generation and antioxidant buffering capacity, has been implicated in the pathogenesis of cardiometabolic disorders (CMD). At physiological levels, ROS functions as signalling mediators, regulates various physiological functions such as the growth, proliferation, and migration endothelial cells (EC) and smooth muscle cells (SMC); formation and development of new blood vessels; EC and SMC regulated death; vascular tone; host defence; and genomic stability. However, at excessive levels, it causes a deviation in the redox state, mediates the development of CMD. Multiple mechanisms account for the rise in the production of free radicals in the heart. These include mitochondrial dysfunction and uncoupling, increased fatty acid oxidation, exaggerated activity of nicotinamide adenine dinucleotide phosphate oxidase (NOX), reduced antioxidant capacity, and cardiac metabolic memory. The purpose of this study is to discuss the link between oxidative stress and the aetiopathogenesis of CMD and highlight associated mechanisms. Oxidative stress plays a vital role in the development of obesity and dyslipidaemia, insulin resistance and diabetes, hypertension via various mechanisms associated with ROS-led inflammatory response and endothelial dysfunction.
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Affiliation(s)
- Roland Akhigbe
- Department of Physiology, College of Medicine, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.,Reproductive Biology and Toxicology Research Laboratories, Oasis of Grace Hospital, Osogbo, Osun State, Nigeria.,Department of Chemical Sciences, Kings University, Odeomu, Osun, Nigeria
| | - Ayodeji Ajayi
- Department of Physiology, College of Medicine, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.
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250
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Chaudhari S, Dey Pereira S, Asare-Warehene M, Naha R, Kabekkodu SP, Tsang BK, Satyamoorthy K. Comorbidities and inflammation associated with ovarian cancer and its influence on SARS-CoV-2 infection. J Ovarian Res 2021; 14:39. [PMID: 33632295 PMCID: PMC7906086 DOI: 10.1186/s13048-021-00787-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 02/09/2021] [Indexed: 12/29/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) caused by the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) worldwide is a major public health concern. Cancer patients are considered a vulnerable population to SARS-CoV-2 infection and may develop several COVID-19 symptoms. The heightened immunocompromised state, prolonged chronic pro-inflammatory milieu coupled with comorbid conditions are shared in both disease conditions and may influence patient outcome. Although ovarian cancer (OC) and COVID-19 are diseases of entirely different primary organs, both diseases share similar molecular and cellular characteristics in their microenvironment suggesting a potential cooperativity leading to poor outcome. In COVID-19 related cases, hospitalizations and deaths worldwide are lower in women than in males; however, comorbidities associated with OC may increase the COVID-19 risk in women. The women at the age of 50-60 years are at greater risk of developing OC as well as SARS-CoV-2 infection. Increased levels of gonadotropin and androgen, dysregulated renin-angiotensin-aldosterone system (RAAS), hyper-coagulation and chronic inflammation are common conditions observed among OC and severe cases of COVID-19. The upregulation of common inflammatory cytokines and chemokines such as tumor necrosis factor α (TNF-α), interleukin (IL)-1β, IL-2, IL-6, IL-10, interferon-γ-inducible protein 10 (IP-10), granulocyte colony-stimulating factor (G-CSF), monocyte chemoattractant protein-1 (MCP-1), macrophage colony-stimulating factor (M-CSF), among others in the sera of COVID-19 and OC subjects suggests potentially similar mechanism(s) involved in the hyper-inflammatory condition observed in both disease states. Thus, it is conceivable that the pathogenesis of OC may significantly contribute to the potential infection by SARS-CoV-2. Our understanding of the influence and mechanisms of SARS-CoV-2 infection on OC is at an early stage and in this article, we review the underlying pathogenesis presented by various comorbidities of OC and correlate their influence on SARS-CoV-2 infection.
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Affiliation(s)
- Sima Chaudhari
- Department of Cell and Molecular Biology, Manipal School of Life Science, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Satyajit Dey Pereira
- Department of Cell and Molecular Biology, Manipal School of Life Science, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Meshach Asare-Warehene
- Chronic Disease Program, Ottawa Hospital Research Institute and Department of Obstetrics & Gynecology and Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Ritam Naha
- Department of Cell and Molecular Biology, Manipal School of Life Science, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Shama Prasada Kabekkodu
- Department of Cell and Molecular Biology, Manipal School of Life Science, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Benjamin K Tsang
- Chronic Disease Program, Ottawa Hospital Research Institute and Department of Obstetrics & Gynecology and Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Kapaettu Satyamoorthy
- Department of Cell and Molecular Biology, Manipal School of Life Science, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
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