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Kamthe DD, Sarangkar SD, Dalvi MS, Gosavi NA, Nikam VS. Angiotensin converting enzyme 2 level and its significance in COVID-19 and other diseases patients. Eur J Clin Invest 2023; 53:e13891. [PMID: 36222740 PMCID: PMC9874405 DOI: 10.1111/eci.13891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 10/03/2022] [Accepted: 10/11/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND Angiotensin-converting enzyme 2 (ACE2) expressions and its modulation are of great interest as being a key receptor for severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) and the protective arm of the rennin-angiotensin axis, maintaining cardiovascular homeostasis. However, ACE2 expressions and their modulation in the healthy and disease background are yet to be explored. METHOD We performed a meta-analysis, extracting the data for ACE2 expression in human subjects with various diseases, including SARS-CoV2 infection without or with co-morbidity. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. Out of 203 studies, 39 met the inclusion criteria with SARS-CoV2 patients without co-morbidity, SARS-CoV2 patients with co-morbidity, cardiovascular (CVD) patients, diabetes patients, kidney disorders patients, pulmonary disease patients, and other viral infections patients. RESULTS Angiotensin-converting enzyme 2 expression was significantly increased in all diseases. There was an elevated level of ACE2, especially membrane-bound ACE2, in COVID-19 patients compared to healthy controls. A statistically significant increase in ACE2 expression was observed in CVD patients and patients with other viral diseases compared to healthy subjects. Moreover, subgroup analysis of ACE2 expression as soluble and membrane-bound ACE2 revealed a remarkable increase in membrane-bound ACE2 in CVD patients, patients with viral infection compared to soluble ACE2 and pooled standard mean difference (SMD) with the random-effects model was 0.37 and 2.23 respectively. CONCLUSION It was observed that utilizing the ACE2 by SARS-CoV2 for its entry and its consequence leads to several complications. So there is a need to investigate the underlying mechanism along with novel therapeutic strategies.
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Affiliation(s)
- Dipanjali Dhananjay Kamthe
- Department of Pharmacology, STES's, Smt. Kashibai Navale College of Pharmacy, Savitribai Phule Pune University, Pune, India
| | - Swapnil Dilip Sarangkar
- Department of Pharmacology, STES's, Smt. Kashibai Navale College of Pharmacy, Savitribai Phule Pune University, Pune, India
| | - Manali Suresh Dalvi
- Department of Pharmacology, STES's, Smt. Kashibai Navale College of Pharmacy, Savitribai Phule Pune University, Pune, India
| | - Netra Arun Gosavi
- Department of Pharmacology, STES's, Smt. Kashibai Navale College of Pharmacy, Savitribai Phule Pune University, Pune, India
| | - Vandana Sandeep Nikam
- Department of Pharmacology, STES's, Smt. Kashibai Navale College of Pharmacy, Savitribai Phule Pune University, Pune, India
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Gutiérrez-Chamorro L, Riveira-Muñoz E, Barrios C, Palau V, Nevot M, Pedreño-López S, Senserrich J, Massanella M, Clotet B, Cabrera C, Mitjà O, Crespo M, Pascual J, Riera M, Ballana E. SARS-CoV-2 Infection Modulates ACE2 Function and Subsequent Inflammatory Responses in Swabs and Plasma of COVID-19 Patients. Viruses 2021; 13:v13091715. [PMID: 34578296 PMCID: PMC8471465 DOI: 10.3390/v13091715] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 12/11/2022] Open
Abstract
Angiotensin converting enzyme 2 (ACE2) is a host ectopeptidase and the receptor for the SARS-CoV-2 virus, albeit virus-ACE2 interaction goes far beyond viral entry into target cells. Controversial data exists linking viral infection to changes in ACE2 expression and function, which might influence the subsequent induction of an inflammatory response. Here, we tested the significance of soluble ACE2 enzymatic activity longitudinally in nasopharyngeal swabs and plasma samples of SARS-CoV-2 infected patients, along with the induction of inflammatory cytokines. Release of soluble functional ACE2 increases upon SARS-CoV-2 infection in swabs and plasma of infected patients, albeit rapidly decreasing during infection course in parallel with ACE2 gene expression. Similarly, SARS-CoV-2 infection also induced the expression of inflammatory cytokines. These changes positively correlated with the viral load. Overall, our results demonstrate the existence of mechanisms by which SARS-CoV-2 modulates ACE2 expression and function, intracellular viral sensing and subsequent inflammatory response, offering new insights into ACE2 dynamics in the human upper respiratory tract and pointing towards soluble ACE2 levels as a putative early biomarker of infection severity.
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Affiliation(s)
- Lucía Gutiérrez-Chamorro
- IrsiCaixa-AIDS Research Institute, Health Research Institute Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, 08916 Badalona, Spain; (L.G.-C.); (E.R.-M.); (M.N.); (S.P.-L.); (J.S.); (M.M.); (B.C.); (C.C.)
| | - Eva Riveira-Muñoz
- IrsiCaixa-AIDS Research Institute, Health Research Institute Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, 08916 Badalona, Spain; (L.G.-C.); (E.R.-M.); (M.N.); (S.P.-L.); (J.S.); (M.M.); (B.C.); (C.C.)
| | - Clara Barrios
- Hospital del Mar Department of Nephrology, Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Spain; (C.B.); (V.P.); (M.C.); (J.P.)
| | - Vanesa Palau
- Hospital del Mar Department of Nephrology, Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Spain; (C.B.); (V.P.); (M.C.); (J.P.)
| | - Maria Nevot
- IrsiCaixa-AIDS Research Institute, Health Research Institute Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, 08916 Badalona, Spain; (L.G.-C.); (E.R.-M.); (M.N.); (S.P.-L.); (J.S.); (M.M.); (B.C.); (C.C.)
| | - Sònia Pedreño-López
- IrsiCaixa-AIDS Research Institute, Health Research Institute Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, 08916 Badalona, Spain; (L.G.-C.); (E.R.-M.); (M.N.); (S.P.-L.); (J.S.); (M.M.); (B.C.); (C.C.)
| | - Jordi Senserrich
- IrsiCaixa-AIDS Research Institute, Health Research Institute Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, 08916 Badalona, Spain; (L.G.-C.); (E.R.-M.); (M.N.); (S.P.-L.); (J.S.); (M.M.); (B.C.); (C.C.)
| | - Marta Massanella
- IrsiCaixa-AIDS Research Institute, Health Research Institute Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, 08916 Badalona, Spain; (L.G.-C.); (E.R.-M.); (M.N.); (S.P.-L.); (J.S.); (M.M.); (B.C.); (C.C.)
| | - Bonaventura Clotet
- IrsiCaixa-AIDS Research Institute, Health Research Institute Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, 08916 Badalona, Spain; (L.G.-C.); (E.R.-M.); (M.N.); (S.P.-L.); (J.S.); (M.M.); (B.C.); (C.C.)
- Fight AIDS and Infectious Diseases Foundation, 08916 Badalona, Spain;
- Hospital Universitari Germans Trias i Pujol, 08916 Badalona, Spain
- Universitat Central de Catalunya, Universitat de Vic, 08500 Vic, Spain
| | - Cecilia Cabrera
- IrsiCaixa-AIDS Research Institute, Health Research Institute Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, 08916 Badalona, Spain; (L.G.-C.); (E.R.-M.); (M.N.); (S.P.-L.); (J.S.); (M.M.); (B.C.); (C.C.)
| | - Oriol Mitjà
- Fight AIDS and Infectious Diseases Foundation, 08916 Badalona, Spain;
- Hospital Universitari Germans Trias i Pujol, 08916 Badalona, Spain
- Universitat Central de Catalunya, Universitat de Vic, 08500 Vic, Spain
- Lihir Medical Centre-International SOS, Londolovit, Lihir Island, Papua New Guinea
| | - Marta Crespo
- Hospital del Mar Department of Nephrology, Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Spain; (C.B.); (V.P.); (M.C.); (J.P.)
| | - Julio Pascual
- Hospital del Mar Department of Nephrology, Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Spain; (C.B.); (V.P.); (M.C.); (J.P.)
| | - Marta Riera
- Hospital del Mar Department of Nephrology, Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Spain; (C.B.); (V.P.); (M.C.); (J.P.)
- Correspondence: (M.R.); (E.B.)
| | - Ester Ballana
- IrsiCaixa-AIDS Research Institute, Health Research Institute Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, 08916 Badalona, Spain; (L.G.-C.); (E.R.-M.); (M.N.); (S.P.-L.); (J.S.); (M.M.); (B.C.); (C.C.)
- Correspondence: (M.R.); (E.B.)
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Bioinformatics Analysis of Allele Frequencies and Expression Patterns of ACE2, TMPRSS2 and FURIN in Different Populations and Susceptibility to SARS-CoV-2. Genes (Basel) 2021; 12:genes12071041. [PMID: 34356057 PMCID: PMC8303858 DOI: 10.3390/genes12071041] [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: 04/24/2021] [Revised: 05/18/2021] [Accepted: 06/02/2021] [Indexed: 02/07/2023] Open
Abstract
The virus responsible for the COVID-19 global health crisis, SARS-CoV-2, has been shown to utilize the ACE2 protein as an entry point to its target cells. The virus has been shown to rely on the actions of TMPRSS2 (a serine protease), as well as FURIN (a peptidase), for the critical priming of its spike protein. It has been postulated that variations in the sequence and expression of SARS-CoV-2's receptor (ACE2) and the two priming proteases (TMPRSS2 and FURIN) may be critical in contributing to SARS-CoV-2 infectivity. This study aims to examine the different expression levels of FURIN in various tissues and age ranges in light of ACE2 and TMPRSS2 expression levels using the LungMAP database. Furthermore, we retrieved expression quantitative trait loci (eQTLs) of the three genes and their annotation. We analyzed the frequency of the retrieved variants in data from various populations and compared it to the Egyptian population. We highlight FURIN's potential interplay with the immune response to SARS-CoV-2 and showcase a myriad of variants of the three genes that are differentially expressed across populations. Our findings provide insights into potential genetic factors that impact SARS-CoV-2 infectivity in different populations and shed light on the varying expression patterns of FURIN.
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Parit R, Jayavel S. Association of ACE inhibitors and angiotensin type II blockers with ACE2 overexpression in COVID-19 comorbidities: A pathway-based analytical study. Eur J Pharmacol 2021; 896:173899. [PMID: 33508281 PMCID: PMC7839513 DOI: 10.1016/j.ejphar.2021.173899] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/10/2021] [Accepted: 01/19/2021] [Indexed: 01/08/2023]
Abstract
Severe Acute Respiratory Syndrome Corona Virus 2 (SARS-CoV-2) outbreak is a major public health concern, which has accounted for >1.7 million deaths across the world. A surge in the case fatality ratio as compared with the infection ratio has been observed in most of the countries. The novel Coronavirus SARS-CoV-2 shares the most common sequence with SARS-CoV, but it has a higher rate of transmission. The SARS-CoV-2 pathogenesis is initiated by the binding of viral spike protein with the target receptor Angiotensin-Converting Enzyme 2 (ACE2) facilitating virus internalization within host cells. SARS-CoV-2 mainly causes alveolar damage ranging from mild to severe clinical respiratory manifestations. Most of the cases have revealed the association of Coronavirus disease with patients having earlier comorbidities like Hypertension, Diabetes mellitus, and Cerebrovascular diseases. Pharmacological investigation of the SARS-Cov-2 patients has revealed the frequent use of drugs belongs to Angiotensin-converting enzyme inhibitors (ACEi) and/or Angiotensin II type I receptor blockers (ARBs). Interestingly, a significant increase in ACE2 expression was noticed in patients routinely treated with the above group of drugs were also reported. To date, the association of ACEi and/or ARBs with the up-regulation of ACE2 expression has not been defined distinctively. The proposed review will focus on the pathways which are responsible for the upregulation of ACE2 and its impact on gravity of SARS-CoV-2 disease.
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Affiliation(s)
- Rahul Parit
- Department of Biotechnology (DDE), Madurai Kamaraj University, Madurai, 625021, Tamilnadu, India
| | - Sridhar Jayavel
- Department of Biotechnology (DDE), Madurai Kamaraj University, Madurai, 625021, Tamilnadu, India.
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Critical role of the endogenous renin-angiotensin system in maintaining self-renewal and regeneration potential of epidermal stem cells. Biochim Biophys Acta Mol Basis Dis 2019; 1865:2647-2656. [DOI: 10.1016/j.bbadis.2019.07.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/10/2019] [Accepted: 07/12/2019] [Indexed: 12/11/2022]
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Nehme A, Zibara K. Cellular distribution and interaction between extended renin-angiotensin-aldosterone system pathways in atheroma. Atherosclerosis 2017; 263:334-342. [PMID: 28600074 DOI: 10.1016/j.atherosclerosis.2017.05.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 04/14/2017] [Accepted: 05/24/2017] [Indexed: 01/06/2023]
Abstract
The importance of the renin-angiotensin-aldosterone system (RAAS) in the development of atherosclerotic has been experimentally documented. In fact, RAAS components have been shown to be locally expressed in the arterial wall and to be differentially regulated during atherosclerotic lesion progression. RAAS transcripts and proteins were shown to be differentially expressed and to interact in the 3 main cells of atheroma: endothelial cells, vascular smooth muscle cells, and macrophages. This review describes the local expression and cellular distribution of extended RAAS components in the arterial wall and their differential regulation during atherosclerotic lesion development.
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Affiliation(s)
- Ali Nehme
- EA4173, Functional Genomics of Arterial Hypertension, Hôpital Nord-Ouest, Villefranche-sur-Saône, Université Lyon1, Lyon, France; ER045, Laboratory of Stem Cells, Department of Biology, Faculty of Sciences, Lebanese University, Beirut, Lebanon
| | - Kazem Zibara
- ER045, Laboratory of Stem Cells, Department of Biology, Faculty of Sciences, Lebanese University, Beirut, Lebanon.
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Purushothaman KR, Purushothaman M, Turnbull IC, Adams DH, Anyanwu A, Krishnan P, Kini A, Sharma SK, O'Connor WN, Moreno PR. Association of altered collagen content and lysyl oxidase expression in degenerative mitral valve disease. Cardiovasc Pathol 2017; 29:11-18. [PMID: 28453968 DOI: 10.1016/j.carpath.2017.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/28/2017] [Accepted: 04/07/2017] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Collagen cross-linking is mediated by lysyl oxidase (LOX) enzyme in the extracellular matrix (ECM) of mitral valve leaflets. Alterations in collagen content and LOX protein expression in the ECM of degenerative mitral valve may enhance leaflet expansion and disease severity. METHODS Twenty posterior degenerative mitral valve leaflets from patients with severe mitral regurgitation were obtained at surgery. Five normal posterior mitral valve leaflets procured during autopsy served as controls. Valvular interstitial cells (VICs) density was quantified by immunohistochemistry, collagen Types I and III by picro-sirius red staining and immunohistochemistry, and proteoglycans by alcian blue staining. Protein expression of LOX and its mediator TGFβ1 were quantified by immunofluorescence and gene expression by PCR. RESULTS VIC density was increased, structural Type I collagen density was reduced, while reparative Type III collagen and proteoglycan densities were increased (P<.0001) with an increase in spongiosa layer thickness in myxomatous valves. These changes were associated with a reduction in LOX (P<.0001) and increase in TGFβ1 protein expression (P<.0001). However, no significant change was seen in gene expression. Linear regression analysis identified a correlation between Type I collagen density and LOX grade (R2=0.855; P<.0001). CONCLUSIONS Reduced Type I collagen density with a simultaneous increase in Type III collagen and proteoglycan densities possibly contributes to spongiosa layer expansion resulting in incompetent mitral valve leaflets. Observed changes in Type I and III collagen densities in Degenerative Mitral Valve Disease may be secondary to alterations in LOX protein expression, contributing to disorganization of ECM and disease severity.
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Affiliation(s)
- K-Raman Purushothaman
- The Zena and Michael A. Weiner Cardiovascular Institute and the Marie-Josée and Henry R. Kravis Cardiovascular Health Center, Department of Medicine.
| | - Meerarani Purushothaman
- The Zena and Michael A. Weiner Cardiovascular Institute and the Marie-Josée and Henry R. Kravis Cardiovascular Health Center, Department of Medicine
| | - Irene C Turnbull
- The Zena and Michael A. Weiner Cardiovascular Institute and the Marie-Josée and Henry R. Kravis Cardiovascular Health Center, Department of Medicine
| | - David H Adams
- Department of Cardiovascular Surgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Anelechi Anyanwu
- Department of Cardiovascular Surgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Prakash Krishnan
- The Zena and Michael A. Weiner Cardiovascular Institute and the Marie-Josée and Henry R. Kravis Cardiovascular Health Center, Department of Medicine
| | - Annapoorna Kini
- The Zena and Michael A. Weiner Cardiovascular Institute and the Marie-Josée and Henry R. Kravis Cardiovascular Health Center, Department of Medicine
| | - Samin K Sharma
- The Zena and Michael A. Weiner Cardiovascular Institute and the Marie-Josée and Henry R. Kravis Cardiovascular Health Center, Department of Medicine
| | - William N O'Connor
- Department of Pathology and Laboratory Medicine, University of Kentucky, Lexington, KY, USA
| | - Pedro R Moreno
- The Zena and Michael A. Weiner Cardiovascular Institute and the Marie-Josée and Henry R. Kravis Cardiovascular Health Center, Department of Medicine
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Local Angiotensin Pathways in Human Carotid Atheroma: Towards a Systems Biology Approach. ACTA ACUST UNITED AC 2015. [DOI: 10.1155/2015/593086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We will summarize the data we have obtained in human carotid artery concerning the organization of an extended local renin angiotensin aldosterone system and its variations at different stages of atheroma. In a system view, we propose a model where concomitant increase in angiotensin and glucocorticoid signaling is induced and amplified in VSMC while vascular smooth muscle cells transdifferentiate toward a lipid storing phenotype.
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Jiang F, Yang J, Zhang Y, Dong M, Wang S, Zhang Q, Liu FF, Zhang K, Zhang C. Angiotensin-converting enzyme 2 and angiotensin 1-7: novel therapeutic targets. Nat Rev Cardiol 2014; 11:413-26. [PMID: 24776703 PMCID: PMC7097196 DOI: 10.1038/nrcardio.2014.59] [Citation(s) in RCA: 285] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Angiotensin-converting enzyme (ACE) 2 and its product angiotensin 1–7 are thought to have effects that counteract the adverse actions of other, better-known renin–angiotensin system (RAS) components Numerous experimental studies have suggested that ACE2 and angiotensin 1–7 have notable protective effects in the heart and blood vessels ACE2-mediated catabolism of angiotensin II is likely to have a major role in cardiovascular protection, whereas the functional importance and signalling mechanisms of angiotensin-1–7-induced actions remain unclear New pharmacological interventions targeting ACE2 are expected to be useful in clinical treatment of cardiovascular disease, especially those associated with overactivation of the conventional RAS More studies, especially randomized controlled clinical trials, are needed to clearly delineate the benefits of therapies targeting angiotensin 1–7 actions
Angiotensin-converting enzyme 2, and its product angiotensin 1–7, are thought to have counteracting effects against the adverse actions of the better-known members of the renin–angiotensin system and might, therefore, be useful therapeutic targets in patients with cardiovascular disease. Professor Jiang and colleagues review the evidence for the potential roles of these proteins in various cardiovascular conditions, including hypertension, atherosclerosis, myocardial remodelling, heart failure, ischaemic stroke, and diabetes. The renin–angiotensin system (RAS) has pivotal roles in the regulation of normal physiology and the pathogenesis of cardiovascular disease. Angiotensin-converting enzyme (ACE) 2, and its product angiotensin 1–7, are thought to have counteracting effects against the adverse actions of other, better known and understood, members of the RAS. The physiological and pathological importance of ACE2 and angiotensin 1–7 in the cardiovascular system are not completely understood, but numerous experimental studies have indicated that these components have protective effects in the heart and blood vessels. Here, we provide an overview on the basic properties of ACE2 and angiotensin 1–7 and a summary of the evidence from experimental and clinical studies of various pathological conditions, such as hypertension, atherosclerosis, myocardial remodelling, heart failure, ischaemic stroke, and diabetes mellitus. ACE2-mediated catabolism of angiotensin II is likely to have a major role in cardiovascular protection, whereas the relevant functions and signalling mechanisms of actions induced by angiotensin 1–7 have not been conclusively determined. The ACE2–angiotensin 1–7 pathway, however, might provide a useful therapeutic target for the treatment of cardiovascular disease, especially in patients with overactive RAS.
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Affiliation(s)
- Fan Jiang
- Key Laboratory of Cardiovascular Remodelling and Function Research, Qilu Hospital, Shandong University, 107 Wen Hua Xi Road, Jinan 250012, Shandong Province, China
| | - Jianmin Yang
- Key Laboratory of Cardiovascular Remodelling and Function Research, Qilu Hospital, Shandong University, 107 Wen Hua Xi Road, Jinan 250012, Shandong Province, China
| | - Yongtao Zhang
- Key Laboratory of Cardiovascular Remodelling and Function Research, Qilu Hospital, Shandong University, 107 Wen Hua Xi Road, Jinan 250012, Shandong Province, China
| | - Mei Dong
- Key Laboratory of Cardiovascular Remodelling and Function Research, Qilu Hospital, Shandong University, 107 Wen Hua Xi Road, Jinan 250012, Shandong Province, China
| | - Shuangxi Wang
- Key Laboratory of Cardiovascular Remodelling and Function Research, Qilu Hospital, Shandong University, 107 Wen Hua Xi Road, Jinan 250012, Shandong Province, China
| | - Qunye Zhang
- Key Laboratory of Cardiovascular Remodelling and Function Research, Qilu Hospital, Shandong University, 107 Wen Hua Xi Road, Jinan 250012, Shandong Province, China
| | - Fang Fang Liu
- Key Laboratory of Cardiovascular Remodelling and Function Research, Qilu Hospital, Shandong University, 107 Wen Hua Xi Road, Jinan 250012, Shandong Province, China
| | - Kai Zhang
- Key Laboratory of Cardiovascular Remodelling and Function Research, Qilu Hospital, Shandong University, 107 Wen Hua Xi Road, Jinan 250012, Shandong Province, China
| | - Cheng Zhang
- Key Laboratory of Cardiovascular Remodelling and Function Research, Qilu Hospital, Shandong University, 107 Wen Hua Xi Road, Jinan 250012, Shandong Province, China
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Role of angiotensin-converting enzyme 2 (ACE2) in diabetic cardiovascular complications. Clin Sci (Lond) 2013; 126:471-82. [DOI: 10.1042/cs20130344] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Diabetes mellitus results in severe cardiovascular complications, and heart disease and failure remain the major causes of death in patients with diabetes. Given the increasing global tide of obesity and diabetes, the clinical burden of diabetes-induced cardiovascular disease is reaching epidemic proportions. Therefore urgent actions are needed to stem the tide of diabetes which entails new prevention and treatment tools. Clinical and pharmacological studies have demonstrated that AngII (angiotensin II), the major effector peptide of the RAS (renin–angiotensin system), is a critical promoter of insulin resistance and diabetes mellitus. The role of RAS and AngII has been implicated in the progression of diabetic cardiovascular complications and AT1R (AngII type 1 receptor) blockers and ACE (angiotensin-converting enzyme) inhibitors have shown clinical benefits. ACE2, the recently discovered homologue of ACE, is a monocarboxypeptidase which converts AngII into Ang-(1–7) [angiotensin-(1–7)] which, by virtue of its actions on the MasR (Mas receptor), opposes the effects of AngII. In animal models of diabetes, an early increase in ACE2 expression and activity occurs, whereas ACE2 mRNA and protein levels have been found to decrease in older STZ (streptozotocin)-induced diabetic rats. Using the Akita mouse model of Type 1 diabetes, we have recently shown that loss of ACE2 disrupts the balance of the RAS in a diabetic state and leads to AngII/AT1R-dependent systolic dysfunction and impaired vascular function. In the present review, we will discuss the role of the RAS in the pathophysiology and treatment of diabetes and its complications with particular emphasis on potential benefits of the ACE2/Ang-(1–7)/MasR axis activation.
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Smith CJ, Lawrence CB, Rodriguez-Grande B, Kovacs KJ, Pradillo JM, Denes A. The immune system in stroke: clinical challenges and their translation to experimental research. J Neuroimmune Pharmacol 2013; 8:867-87. [PMID: 23673977 DOI: 10.1007/s11481-013-9469-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 04/28/2013] [Indexed: 12/27/2022]
Abstract
Stroke represents an unresolved challenge for both developed and developing countries and has a huge socio-economic impact. Although considerable effort has been made to limit stroke incidence and improve outcome, strategies aimed at protecting injured neurons in the brain have all failed. This failure is likely to be due to both the incompleteness of modelling the disease and its causes in experimental research, and also the lack of understanding of how systemic mechanisms lead to an acute cerebrovascular event or contribute to outcome. Inflammation has been implicated in all forms of brain injury and it is now clear that immune mechanisms profoundly influence (and are responsible for the development of) risk and causation of stroke, and the outcome following the onset of cerebral ischemia. Until very recently, systemic inflammatory mechanisms, with respect to common comorbidities in stroke, have largely been ignored in experimental studies. The main aim is therefore to understand interactions between the immune system and brain injury in order to develop novel therapeutic approaches. Recent data from clinical and experimental research clearly show that systemic inflammatory diseases -such as atherosclerosis, obesity, diabetes or infection - similar to stress and advanced age, are associated with dysregulated immune responses which can profoundly contribute to cerebrovascular inflammation and injury in the central nervous system. In this review, we summarize recent advances in the field of inflammation and stroke, focusing on the challenges of translation between pre-clinical and clinical studies, and potential anti-inflammatory/immunomodulatory therapeutic approaches.
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Affiliation(s)
- Craig J Smith
- Stroke and Vascular Research Centre, Institute of Cardiovascular Sciences, University of Manchester, Manchester Academic Health Science Centre, Salford Royal Foundation Trust, Salford M6 8HD, UK.
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