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Cai S, Pan N, Xu M, Su Y, Qiao K, Chen B, Zheng B, Xiao M, Liu Z. ACE Inhibitory Peptide from Skin Collagen Hydrolysate of Takifugu bimaculatus as Potential for Protecting HUVECs Injury. Mar Drugs 2021; 19:md19120655. [PMID: 34940654 PMCID: PMC8703921 DOI: 10.3390/md19120655] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/20/2021] [Accepted: 11/22/2021] [Indexed: 12/21/2022] Open
Abstract
Angiotensin-I-converting enzyme (ACE) is a crucial enzyme or receptor that catalyzes the generation of potent vasopressor angiotensin II (Ang II). ACE inhibitory peptides from fish showed effective ACE inhibitory activity. In this study, we reported an ACE inhibitory peptide from Takifugu bimaculatus (T. bimaculatus), which was obtained by molecular docking with acid-soluble collagen (ASC) hydrolysate of T. bimaculatus. The antihypertensive effects and potential mechanism were conducted using Ang-II-induced human umbilical vein endothelial cells (HUVECs) as a model. The results showed that FNLRMQ alleviated the viability and facilitated apoptosis of Ang-II-induced HUVECs. Further research suggested that FNLRMQ may protect Ang-II-induced endothelial injury by regulating Nrf2/HO-1 and PI3K/Akt/eNOS signaling pathways. This study, herein, reveals that collagen peptide FNLRMQ could be used as a potential candidate compound for antihypertensive treatment, and could provide scientific evidence for the high-value utilization of marine resources including T. bimaculatus.
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Affiliation(s)
- Shuilin Cai
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (S.C.); (Y.S.)
- Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fisheries Research Institute of Fujian, Xiamen 361013, China; (N.P.); (M.X.); (K.Q.); (B.C.)
| | - Nan Pan
- Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fisheries Research Institute of Fujian, Xiamen 361013, China; (N.P.); (M.X.); (K.Q.); (B.C.)
| | - Min Xu
- Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fisheries Research Institute of Fujian, Xiamen 361013, China; (N.P.); (M.X.); (K.Q.); (B.C.)
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Yongchang Su
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (S.C.); (Y.S.)
- Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fisheries Research Institute of Fujian, Xiamen 361013, China; (N.P.); (M.X.); (K.Q.); (B.C.)
| | - Kun Qiao
- Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fisheries Research Institute of Fujian, Xiamen 361013, China; (N.P.); (M.X.); (K.Q.); (B.C.)
| | - Bei Chen
- Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fisheries Research Institute of Fujian, Xiamen 361013, China; (N.P.); (M.X.); (K.Q.); (B.C.)
| | - Bingde Zheng
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (S.C.); (Y.S.)
- Correspondence: (B.Z.); (M.X.); (Z.L.)
| | - Meitian Xiao
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; (S.C.); (Y.S.)
- Correspondence: (B.Z.); (M.X.); (Z.L.)
| | - Zhiyu Liu
- Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province, Fisheries Research Institute of Fujian, Xiamen 361013, China; (N.P.); (M.X.); (K.Q.); (B.C.)
- Correspondence: (B.Z.); (M.X.); (Z.L.)
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Putta P, Smith AH, Chaudhuri P, Guardia-Wolff R, Rosenbaum MA, Graham LM. Activation of the cytosolic calcium-independent phospholipase A 2 β isoform contributes to TRPC6 externalization via release of arachidonic acid. J Biol Chem 2021; 297:101180. [PMID: 34509476 PMCID: PMC8498464 DOI: 10.1016/j.jbc.2021.101180] [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: 03/22/2021] [Revised: 09/02/2021] [Accepted: 09/07/2021] [Indexed: 10/25/2022] Open
Abstract
During vascular interventions, oxidized low-density lipoprotein and lysophosphatidylcholine (lysoPC) accumulate at the site of arterial injury, inhibiting endothelial cell (EC) migration and arterial healing. LysoPC activates canonical transient receptor potential 6 (TRPC6) channels, leading to a prolonged increase in intracellular calcium ion concentration that inhibits EC migration. However, an initial increase in intracellular calcium ion concentration is required to activate TRPC6, and this mechanism remains elusive. We hypothesized that lysoPC activates the lipid-cleaving enzyme phospholipase A2 (PLA2), which releases arachidonic acid (AA) from the cellular membrane to open arachidonate-regulated calcium channels, allowing calcium influx that promotes externalization and activation of TRPC6 channels. The focus of this study was to identify the roles of calcium-dependent and/or calcium-independent PLA2 in lysoPC-induced TRPC6 externalization. We show that lysoPC induced PLA2 enzymatic activity and caused AA release in bovine aortic ECs. To identify the specific subgroup and the isoform(s) of PLA2 involved in lysoPC-induced TRPC6 activation, transient knockdown studies were performed in the human endothelial cell line EA.hy926 using siRNA to inhibit the expression of genes encoding cPLA2α, cPLA2γ, iPLA2β, or iPLA2γ. Downregulation of the β isoform of iPLA2 blocked lysoPC-induced release of AA from EC membranes and TRPC6 externalization, as well as preserved EC migration in the presence of lysoPC. We propose that blocking TRPC6 activation and promoting endothelial healing could improve the outcomes for patients undergoing cardiovascular interventions.
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Affiliation(s)
- Priya Putta
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio, USA.
| | - Andrew H Smith
- Department of Vascular Surgery, Cleveland Clinic, Cleveland, Ohio, USA
| | - Pinaki Chaudhuri
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio, USA
| | - Rocio Guardia-Wolff
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio, USA
| | - Michael A Rosenbaum
- Surgical Service, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, Ohio, USA
| | - Linda M Graham
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio, USA; Department of Vascular Surgery, Cleveland Clinic, Cleveland, Ohio, USA
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Torres Crigna A, Link B, Samec M, Giordano FA, Kubatka P, Golubnitschaja O. Endothelin-1 axes in the framework of predictive, preventive and personalised (3P) medicine. EPMA J 2021; 12:265-305. [PMID: 34367381 PMCID: PMC8334338 DOI: 10.1007/s13167-021-00248-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 06/11/2021] [Indexed: 02/07/2023]
Abstract
Endothelin-1 (ET-1) is involved in the regulation of a myriad of processes highly relevant for physical and mental well-being; female and male health; in the modulation of senses, pain, stress reactions and drug sensitivity as well as healing processes, amongst others. Shifted ET-1 homeostasis may influence and predict the development and progression of suboptimal health conditions, metabolic impairments with cascading complications, ageing and related pathologies, cardiovascular diseases, neurodegenerative pathologies, aggressive malignancies, modulating, therefore, individual outcomes of both non-communicable and infectious diseases such as COVID-19. This article provides an in-depth analysis of the involvement of ET-1 and related regulatory pathways in physiological and pathophysiological processes and estimates its capacity as a predictor of ageing and related pathologies,a sensor of lifestyle quality and progression of suboptimal health conditions to diseases for their targeted preventionand as a potent target for cost-effective treatments tailored to the person.
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Affiliation(s)
- Adriana Torres Crigna
- Department of Radiation Oncology, University Hospital Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Barbara Link
- Department of Radiation Oncology, University Hospital Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Marek Samec
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia
| | - Frank A. Giordano
- Department of Radiation Oncology, University Hospital Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
| | - Peter Kubatka
- Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia
| | - Olga Golubnitschaja
- Predictive, Preventive and Personalised (3P) Medicine, Department of Radiation Oncology, University Hospital Bonn, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
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Abu-Saleh N, Yaseen H, Kinaneh S, Khamaisi M, Abassi Z. Combination of hyperglycaemia and hyperlipidaemia induces endothelial dysfunction: Role of the endothelin and nitric oxide systems. J Cell Mol Med 2020; 25:1884-1895. [PMID: 33369150 PMCID: PMC7882960 DOI: 10.1111/jcmm.15787] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 07/30/2020] [Accepted: 07/30/2020] [Indexed: 12/26/2022] Open
Abstract
Endothelial dysfunction (ED) is a key feature of diabetes and is a major cause of diabetic vasculopathy. Diabetic patients who also exhibit hyperlipidaemia suffer from accelerated vascular complications. While the deleterious effects of high glucose levels (HG) and hyperlipidaemia alone on ED are well established, the effects of combined hyperlipidaemia and HG have not been thoroughly studied. Therefore, the current study examines whether HG and hyperlipidaemia exert synergistic ED, and explores the mechanisms underlying this phenomenon. We applied multi‐disciplinary approaches including cultured HUVECs and HMEC‐1 as well as knockout mice CByJ.129S7(B6)‐Ldlrtm1Her/J (LDLR−/−) to investigate the mechanisms underlying combined HG and hyperlipidaemia‐induced ED. Incremental doses of glucose in the presence or absence of OxLDL were added to HUVECs and HMEC‐1. After 5 days, the status of nitric oxide (NO) and endothelin (ET)‐1 systems as well as their signal transduction were assessed using Western blot, ELISA and immunoreactive staining. The effects of chronic combination of HG and hyperlipidaemia on endothelial integrity and function as well as alterations in circulatory NO and ET‐1 systems were examined in knockout mice LDLR−/− and their wild‐type. HUVEC cells exposed to HG and OxLDL displayed enhanced ET‐1 production, more than HG or OxLDL when added alone. Overproduction of ET‐1 stems from up‐regulation of endothelin converting enzyme (ECE)‐1 as observed under these conditions. In contrast, combination of HG and OxLDL dramatically decreased both total endothelial NO synthase (eNOS) by 60%, and activated eNOS (peNOS) by 80%. Moreover, NRF2 decreased by 42% and its active form (pNRF2) by 56%, as compared to baseline. Likewise, ETB levels decreased by 64% from baseline on endothelial cells. Furthermore, diabetic LDLR−/− mice displayed a higher blood pressure, plasma triglycerides, cholesterol, ET‐1 and NO2/NO3 levels, when compared with normoglycemic LDLR−/− and BALB mice. Combined hyperglycaemia and hyperlipidaemia activates the ET system and attenuates the nitric oxide system with the Nrf2 signalling pathway. These findings suggest that perturbations in these paracrine systems may contribute to ED.
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Affiliation(s)
- Niroz Abu-Saleh
- Department of Physiology, Ruth & Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Hiba Yaseen
- Department of Medicine D, Rambam Health Care Campus and Ruth & Bruce Rappaport Faculty of Medicine, Technion-IIT, Haifa, Israel.,Clinical Research Institute, Rambam Health Care Campus, Haifa, Israel
| | - Safa Kinaneh
- Department of Physiology, Ruth & Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Mogher Khamaisi
- Department of Medicine D, Rambam Health Care Campus and Ruth & Bruce Rappaport Faculty of Medicine, Technion-IIT, Haifa, Israel.,Clinical Research Institute, Rambam Health Care Campus, Haifa, Israel
| | - Zaid Abassi
- Department of Physiology, Ruth & Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel.,Department of Laboratory Medicine, Rambam Health Care Campus, Haifa, Israel
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Sanches E, Topal B, Proczko M, Stepaniak PS, Severin R, Phillips SA, Sabbahi A, Pujol Rafols J, Pouwels S. Endothelial function in obesity and effects of bariatric and metabolic surgery. Expert Rev Cardiovasc Ther 2020; 18:343-353. [DOI: 10.1080/14779072.2020.1767594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Elijah Sanches
- Department of Surgery, Haaglanden Medical Center, The Hague, The Netherlands
| | - Besir Topal
- Department of Cardiothoracic Surgery, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
| | - Monika Proczko
- Department of General, Endocrine and Transplant Surgery, University Medical Center, Gdansk University, Gdansk, Poland
| | - Pieter S. Stepaniak
- Department of Operating Rooms, Catharina Hospital, Eindhoven, The Netherlands
| | - Rich Severin
- Department of Physical Therapy, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, IL, USA
- Doctor of Physical Therapy Program, Robbins College of Health and Human Sciences, Baylor University, Waco, TX, USA
| | - Shane A. Phillips
- Department of Physical Therapy, Integrative Physiologic Laboratory, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, IL, USA
| | - Ahmad Sabbahi
- Department of Physical Therapy, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, IL, USA
- Department of Physical Therapy, Integrative Physiologic Laboratory, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, IL, USA
| | | | - Sjaak Pouwels
- Department of Intensive Care Medicine, Elisabeth-Tweesteden Hospital, Tilburg, The Netherlands
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Yang G, Zhuo J, Lin Y, Zhang M, Liu L, Chen X, Gao R. Ginsenoside Rb1 Prevents Dysfunction of Endothelial Cells by Suppressing Inflammatory Response and Apoptosis in the High-Fat Diet Plus Balloon Catheter-Injured Rabbit Model via the G Protein-Coupled Estrogen Receptor-Mediated Phosphatidylinositol 3-Kinases (PI3K)/Akt Pathway. Med Sci Monit 2019; 25:7407-7417. [PMID: 31609302 PMCID: PMC6791186 DOI: 10.12659/msm.912986] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 12/28/2018] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The initiation of atherosclerosis (AS) is attributed to the dysfunction of endothelial cells (ECs) via the inhibition of g protein-coupled estrogen receptor (GPER). In the current study, we assessed the potential of Ginsenoside Rb1 (Rb1) to attenuate the dysfunction of ECs via GPER-mediated PI3K/Akt pathway. MATERIAL AND METHODS AS was induced in rabbits and then the AS rabbits were treated with Rb1. Thereafter, the ECs were isolated from AS and healthy rabbits, and treated with Rb1. The effect of Rb1 on blood lipid levels in AS rabbits and on apoptosis, inflammatory response, and GPER/PI3K/Akt axis activity in ECs was detected. Furthermore, the activities of GPER and PI3K were modulated to verify the key role of the axis in the anti-AS effect of Rb1. RESULTS The levels of total cholesterol, low-density lipoprotein (LDL), and triglyceride in AS rabbits were suppressed by Rb1 while the high-density lipoprotein (HDL) level was increased. In in vitro assays, Rb1 administration inhibited apoptosis process and the production of pro-inflammation cytokines in AS ECs. The expression levels of GPER, p-PI3K, and p-Akt were upregulated by Rb1, associated with the increased level of Bcl-2 and reduced level of Bax. When the activity of GPER was inhibited by GP-15 in AS ECs, the treatment effect of Rb1 was blocked. However, the activation of PI3K could restore the protective effect of Rb1 after the inhibition of GPER. CONCLUSIONS The anti-AS potential of Rb1 was exerted by restoring the regular function of ECs via the activation of GPER-mediated PI3K/Akt signaling.
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Affiliation(s)
- Guoliang Yang
- Department of Cardiology, Affiliated Hospital of Jining Medical University, Jining, Shandong, P.R. China
| | - Jun Zhuo
- Department of Interventional Radiology, Affiliated Hospital of Jining Medical University, Jining, Shandong, P.R. China
| | - Yuedong Lin
- Department of Cardiology, Affiliated Hospital of Jining Medical University, Jining, Shandong, P.R. China
| | - Meng Zhang
- Department of Cardiology, Affiliated Hospital of Jining Medical University, Jining, Shandong, P.R. China
| | - Lixin Liu
- Department of Cardiology, Affiliated Hospital of Jining Medical University, Jining, Shandong, P.R. China
| | - Xueying Chen
- Department of Cardiology, Affiliated Hospital of Jining Medical University, Jining, Shandong, P.R. China
| | - Ronghua Gao
- Department of Cardiology, Affiliated Hospital of Jining Medical University, Jining, Shandong, P.R. China
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Pouwels S, Van Genderen ME, Kreeftenberg HG, Ribeiro R, Parmar C, Topal B, Celik A, Ugale S. Utility of the cold pressor test to predict future cardiovascular events. Expert Rev Cardiovasc Ther 2019; 17:305-318. [PMID: 30916592 DOI: 10.1080/14779072.2019.1598262] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
INTRODUCTION The cold pressor test (CPT) is a common and extensively validated test, which induces systemic stress involving immersion of an individual's hand in ice water (normally temperature between 0 and 5 degrees Celsius) for a period of time. CPT has been used in various fields, like examining effects of stress on memory, decision-making, pain and cardiovascular health. Areas covered: In terms of cardiovascular health, current research is mainly interested in predicting the occurrence of cardiovascular (CV) events. The objective of this review is to give an overview of the history and methodology of the CPT, and clinical utility in possibly predicting CV events in CAD and other atherosclerotic diseases. Secondly, we will discuss possible future applications of the CPT in clinical care. Expert opinion: An important issue to address is the fact that the physiology of the CPT is not fully understood at this moment. As pointed out multiple mechanisms might be responsible for contributing to either coronary vasodilatation or coronary vasoconstriction. Regarding the physiological mechanism of the CPT and its effect on the measurements of the carotid artery reactivity even less is known.
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Affiliation(s)
- Sjaak Pouwels
- a Department of Surgery , Franciscus Gasthuis & Vlietland , Rotterdam/Schiedam , The Netherlands
| | - Michel E Van Genderen
- b Department of Internal Medicine , Franciscus Gasthuis & Vlietland , Rotterdam/Schiedam , The Netherlands
| | - Herman G Kreeftenberg
- c Department of Internal Medicine , Catharina Hospital , Eindhoven , The Netherlands.,d Department of Intensive Care Medicine , Catharina Hospital , Eindhoven , The Netherlands
| | - Rui Ribeiro
- e Metabolic Patient Multidisciplinary Centre , Clínica de Santo António , Lisbon , Portugal
| | - Chetan Parmar
- f Department of Surgery , Whittington Hospital , London , UK
| | - Besir Topal
- g Department of Cardiothoracic Surgery , OLVG , Amsterdam , The Netherlands
| | - Alper Celik
- h Department of metabolic surgery , Metabolic Surgery Clinic , Istanbul , Turkey
| | - Surendra Ugale
- i Department of Surgery , Virinchi Hospitals , Hyderbad , India
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The Association of Helicobacter pylori Infection with Endothelial Dysfunction in Pediatric Patients. ARCHIVES OF PEDIATRIC INFECTIOUS DISEASES 2018. [DOI: 10.5812/pedinfect.82540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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The Association of Helicobacter pylori Infection with Endothelial Dysfunction in Pediatric Patients. ARCHIVES OF PEDIATRIC INFECTIOUS DISEASES 2018. [DOI: 10.5812/apid.82540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Tacey A, Qaradakhi T, Brennan-Speranza T, Hayes A, Zulli A, Levinger I. Potential Role for Osteocalcin in the Development of Atherosclerosis and Blood Vessel Disease. Nutrients 2018; 10:nu10101426. [PMID: 30287742 PMCID: PMC6213520 DOI: 10.3390/nu10101426] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 09/27/2018] [Accepted: 09/29/2018] [Indexed: 12/12/2022] Open
Abstract
There is increasing evidence for the involvement of the skeleton in the regulation of atherosclerotic vascular disease. Osteocalcin, an osteoblast derived protein, exists in two forms, carboxylated and undercarboxylated osteocalcin. Undercarboxylated osteocalcin has been linked to the regulation of metabolic functions, including glucose and lipid metabolism. Features of atherosclerosis have been associated with circulating osteocalcin; however, this association is often conflicting and unclear. Therefore, the aim of this review is to examine the evidence for a role of osteocalcin in atherosclerosis development and progression, and in particular endothelial dysfunction and vascular calcification. The current literature suggests that undercarboxylated osteocalcin stimulates the phosphoinositide 3-kinase/protein kinase B (PI3K/Akt) signaling pathway to upregulate nitric oxide and nuclear factor kappa β (NF-кβ) in vascular cells, possibly protecting endothelial function and preventing atherogenesis. However, this effect may be mediated by metabolic factors, such as improvements in insulin signaling, rather than through a direct effect on the vasculature. Total osteocalcin is frequently associated with vascular calcification, an association that may occur as a result of vascular cells eliciting an osteogenic phenotype. Whether osteocalcin acts as a mediator or a marker of vascular calcification is currently unclear. As such, further studies that examine each form of osteocalcin are required to elucidate if it is a mediator of atherogenesis, and whether it functions independently of metabolic factors.
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Affiliation(s)
- Alexander Tacey
- Institute for Health and Sport (IHES), Victoria University, Melbourne, VIC 3011, Australia.
- Australian Institute for Musculoskeletal Science, Department of Medicine, Western Health, Melbourne Medical School, University of Melbourne, Melbourne, VIC 3021, Australia.
| | - Tawar Qaradakhi
- Institute for Health and Sport (IHES), Victoria University, Melbourne, VIC 3011, Australia.
| | - Tara Brennan-Speranza
- Department of Physiology and Bosch Institute for Medical Research, University of Sydney, Sydney, NSW 2006, Australia.
| | - Alan Hayes
- Institute for Health and Sport (IHES), Victoria University, Melbourne, VIC 3011, Australia.
- Australian Institute for Musculoskeletal Science, Department of Medicine, Western Health, Melbourne Medical School, University of Melbourne, Melbourne, VIC 3021, Australia.
| | - Anthony Zulli
- Institute for Health and Sport (IHES), Victoria University, Melbourne, VIC 3011, Australia.
| | - Itamar Levinger
- Institute for Health and Sport (IHES), Victoria University, Melbourne, VIC 3011, Australia.
- Australian Institute for Musculoskeletal Science, Department of Medicine, Western Health, Melbourne Medical School, University of Melbourne, Melbourne, VIC 3021, Australia.
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Nafisa A, Gray SG, Cao Y, Wang T, Xu S, Wattoo FH, Barras M, Cohen N, Kamato D, Little PJ. Endothelial function and dysfunction: Impact of metformin. Pharmacol Ther 2018; 192:150-162. [PMID: 30056057 DOI: 10.1016/j.pharmthera.2018.07.007] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cardiovascular and metabolic diseases remain the leading cause of morbidity and mortality worldwide. Endothelial dysfunction is a key player in the initiation and progression of cardiovascular and metabolic diseases. Current evidence suggests that the anti-diabetic drug metformin improves insulin resistance and protects against endothelial dysfunction in the vasculature. Hereby, we provide a timely review on the protective effects and molecular mechanisms of metformin in preventing endothelial dysfunction and cardiovascular and metabolic diseases.
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Affiliation(s)
- Asma Nafisa
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, Australia.
| | - Susan G Gray
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, Australia.
| | - Yingnan Cao
- Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou, China
| | - Tinghuai Wang
- Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou, China.
| | - Suowen Xu
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
| | - Feroza H Wattoo
- Department of Biochemistry, PMAS Arid Agriculture University, Shamasabad, Muree Road, Rawalpindi 4600, Pakistan..
| | - Michael Barras
- Dept. of Pharmacy, Princess Alexandra Hospital, 199 Ipswich Rd, Woolloongabba, QLD 4102, Australia.
| | - Neale Cohen
- Baker Heart and Diabetes Institute, Melbourne, 3004, Victoria, Australia.
| | - Danielle Kamato
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, Australia; Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou, China.
| | - Peter J Little
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, Australia; Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou, China.
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Network pharmacology exploration reveals endothelial inflammation as a common mechanism for stroke and coronary artery disease treatment of Danhong injection. Sci Rep 2017; 7:15427. [PMID: 29133791 PMCID: PMC5684234 DOI: 10.1038/s41598-017-14692-3] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 10/09/2017] [Indexed: 12/17/2022] Open
Abstract
Although Danhong injection (DHI) is the most widely prescribed Chinese medicine for both stroke and coronary artery disease (CAD), its underlying common molecular mechanisms remain unclear. An integrated network pharmacology and experimental verification approach was used to decipher common pharmacological mechanisms of DHI on stroke and CAD treatment. A compound-target-disease & function-pathway network was constructed and analyzed, indicating that 37 ingredients derived from DH (Salvia miltiorrhiza Bge., Flos Carthami tinctorii and DHI) modulated 68 common targets shared by stroke and CAD. In-depth network analysis results of the top diseases, functions, pathways and upstream regulators implied that a common underlying mechanism linking DHI’s role in stroke and CAD treatment was inflammatory response in the process of atherosclerosis. Experimentally, DHI exerted comprehensive anti-inflammatory effects on LPS, ox-LDL or cholesterol crystal-induced NF-κB, c-jun and p38 activation, as well as IL-1β, TNF-α, and IL-10 secretion in vascular endothelial cells. Ten of 14 predicted ingredients were verified to have significant anti-inflammatory activities on LPS-induced endothelial inflammation. DHI exerts pharmacological efficacies on both stroke and CAD through multi-ingredient, multi-target, multi-function and multi-pathway mode. Anti-endothelial inflammation therapy serves as a common underlying mechanism. This study provides a new understanding of DHI in clinical application on cardiovascular and cerebrovascular diseases.
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13
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Godfraind T. Discovery and Development of Calcium Channel Blockers. Front Pharmacol 2017; 8:286. [PMID: 28611661 PMCID: PMC5447095 DOI: 10.3389/fphar.2017.00286] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/05/2017] [Indexed: 12/25/2022] Open
Abstract
In the mid 1960s, experimental work on molecules under screening as coronary dilators allowed the discovery of the mechanism of calcium entry blockade by drugs later named calcium channel blockers. This paper summarizes scientific research on these small molecules interacting directly with L-type voltage-operated calcium channels. It also reports on experimental approaches translated into understanding of their therapeutic actions. The importance of calcium in muscle contraction was discovered by Sidney Ringer who reported this fact in 1883. Interest in the intracellular role of calcium arose 60 years later out of Kamada (Japan) and Heibrunn (USA) experiments in the early 1940s. Studies on pharmacology of calcium function were initiated in the mid 1960s and their therapeutic applications globally occurred in the the 1980s. The first part of this report deals with basic pharmacology in the cardiovascular system particularly in isolated arteries. In the section entitled from calcium antagonists to calcium channel blockers, it is recalled that drugs of a series of diphenylpiperazines screened in vivo on coronary bed precontracted by angiotensin were initially named calcium antagonists on the basis of their effect in depolarized arteries contracted by calcium. Studies on arteries contracted by catecholamines showed that the vasorelaxation resulted from blockade of calcium entry. Radiochemical and electrophysiological studies performed with dihydropyridines allowed their cellular targets to be identified with L-type voltage-operated calcium channels. The modulated receptor theory helped the understanding of their variation in affinity dependent on arterial cell membrane potential and promoted the terminology calcium channel blocker (CCB) of which the various chemical families are introduced in the paper. In the section entitled tissue selectivity of CCBs, it is shown that characteristics of the drug, properties of the tissue, and of the stimuli are important factors of their action. The high sensitivity of hypertensive animals is explained by the partial depolarization of their arteries. It is noted that they are arteriolar dilators and that they cannot be simply considered as vasodilators. The second part of this report provides key information about clinical usefulness of CCBs. A section is devoted to the controversy on their safety closed by the Allhat trial (2002). Sections are dedicated to their effect in cardiac ischemia, in cardiac arrhythmias, in atherosclerosis, in hypertension, and its complications. CCBs appear as the most commonly used for the treatment of cardiovascular diseases. As far as hypertension is concerned, globally the prevalence in adults aged 25 years and over was around 40% in 2008. Usefulness of CCBs is discussed on the basis of large clinical trials. At therapeutic dosage, they reduce the elevated blood pressure of hypertensive patients but don't change blood pressure of normotensive subjects, as was observed in animals. Those active on both L- and T-type channels are efficient in nephropathy. Alteration of cognitive function is a complication of hypertension recognized nowadays as eventually leading to dementia. This question is discussed together with the efficacy of CCBs in cognitive pathology. In the section entitled beyond the cardiovascular system, CCBs actions in migraine, neuropathic pain, and subarachnoid hemorrhage are reported. The final conclusions refer to long-term effects discovered in experimental animals that have not yet been clearly reported as being important in human pharmacotherapy.
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Affiliation(s)
- Théophile Godfraind
- Pharmacologie, Faculté de Médecine et de Dentisterie, Université Catholique de LouvainBruxelles, Belgium
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Maekawa H, Serrone JC, Tjahjadi M, Hernesniemi J. RETRACTED ARTICLE: The role of estrogen on the pathology of cerebral aneurysms. Expert Rev Neurother 2016; 16:927-35. [DOI: 10.1080/14737175.2016.1189827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Barton M, Husmann M, Meyer MR. Accelerated Vascular Aging as a Paradigm for Hypertensive Vascular Disease: Prevention and Therapy. Can J Cardiol 2016; 32:680-686.e4. [PMID: 27118295 DOI: 10.1016/j.cjca.2016.02.062] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/22/2016] [Accepted: 02/23/2016] [Indexed: 12/21/2022] Open
Abstract
Aging is considered the most important nonmodifiable risk factor for cardiovascular disease and death after age 28 years. Because of demographic changes the world population is expected to increase to 9 billion by the year 2050 and up to 12 billion by 2100, with several-fold increases among those 65 years of age and older. Healthy aging and prevention of aging-related diseases and associated health costs have become part of political agendas of governments around the world. Atherosclerotic vascular burden increases with age; accordingly, patients with progeria (premature aging) syndromes die from myocardial infarctions or stroke as teenagers or young adults. The incidence and prevalence of arterial hypertension also increases with age. Arterial hypertension-like diabetes and chronic renal failure-shares numerous pathologies and underlying mechanisms with the vascular aging process. In this article, we review how arterial hypertension resembles premature vascular aging, including the mechanisms by which arterial hypertension (as well as other risk factors such as diabetes mellitus, dyslipidemia, or chronic renal failure) accelerates the vascular aging process. We will also address the importance of cardiovascular risk factor control-including antihypertensive therapy-as a powerful intervention to interfere with premature vascular aging to reduce the age-associated prevalence of diseases such as myocardial infarction, heart failure, hypertensive nephropathy, and vascular dementia due to cerebrovascular disease. Finally, we will discuss the implementation of endothelial therapy, which aims at active patient participation to improve primary and secondary prevention of cardiovascular disease.
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Affiliation(s)
- Matthias Barton
- Molecular Internal Medicine, University of Zürich, Zürich, Switzerland.
| | - Marc Husmann
- Division of Angiology, University Hospital Zürich, Zürich, Switzerland
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Park KH, Park WJ. Endothelial Dysfunction: Clinical Implications in Cardiovascular Disease and Therapeutic Approaches. J Korean Med Sci 2015; 30:1213-25. [PMID: 26339159 PMCID: PMC4553666 DOI: 10.3346/jkms.2015.30.9.1213] [Citation(s) in RCA: 176] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 05/29/2015] [Indexed: 12/17/2022] Open
Abstract
Atherosclerosis is a chronic progressive vascular disease. It starts early in life, has a long asymptomatic phase, and a progression accelerated by various cardiovascular risk factors. The endothelium is an active inner layer of the blood vessel. It generates many factors that regulate vascular tone, the adhesion of circulating blood cells, smooth muscle proliferation, and inflammation, which are the key mechanisms of atherosclerosis and can contribute to the development of cardiovascular events. There is growing evidence that functional impairment of the endothelium is one of the first recognizable signs of development of atherosclerosis and is present long before the occurrence of atherosclerotic cardiovascular disease. Therefore, understanding the endothelium's central role provides not only insights into pathophysiology, but also a possible clinical opportunity to detect early disease, stratify cardiovascular risk, and assess response to treatments. In the present review, we will discuss the clinical implications of endothelial function as well as the therapeutic issues for endothelial dysfunction in cardiovascular disease as primary and secondary endothelial therapy.
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Affiliation(s)
- Kyoung-Ha Park
- Cardiovascular Division, Department of Internal Medicine, Hallym University Medical Center, Anyang, Korea
| | - Woo Jung Park
- Cardiovascular Division, Department of Internal Medicine, Hallym University Medical Center, Anyang, Korea
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Abstract
Functional integrity of endothelial cells is an indicator and a prerequisite for vascular health and counteracts the development of atherosclerosis. This concept of 'endothelial therapy' was developed in the late 1990s as an approach to preserve or restore endothelial cell health given that 'the knowledge of the mechanisms involved in 'endothelial dysfunction' allows us to interfere specifically with pathogenic pathways at very early time points and to slow down the progression of disease'. In the present review, the principles underlying endothelial cell health will be discussed as well as the role of endothelial therapy as a preventive measure to reduce the prevalence of coronary artery disease or to delay disease progression in patients with chronic coronary artery disease. This article also highlights the importance of active participation, the need to reduce the number of future patients in view of the rising prevalence of childhood obesity, and the potential of endothelial therapy to improve survival, reduce disability and health costs, and to improve overall quality of life in patients at risk for or already diagnosed with coronary artery disease. The preventive and therapeutic approaches and considerations described herein can be applied by physicians, patients, parents, educators, health agencies, and political decision makers to help reducing the global cardiovascular disease burden in the decades to come.
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Affiliation(s)
- Matthias Barton
- Molecular Internal Medicine, University of Zürich, LTK Y44 G22, Winterthurerstrasse 190, 8057 Zürich, Switzerland.
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Moon MK, Kang DG, Lee AS, Yeom KB, Kim JS, Lee HS. Anti-Atherogenic Effects of the Aqueous Extract of Rhubarb in Rats Fed an Atherogenic Diet. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 36:555-68. [DOI: 10.1142/s0192415x08005977] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The present study was designed to investigate whether the aqueous extract of rhubarb (AR) could prevent the development of atherosclerosis through regulating vascular inflammatory processes in rats fed with an atherogenic diet. AR significantly reduced plasma low-density lipoprotein-cholesterol, and increased plasma high-density lipoprotein-cholesterol in rats fed with an atherogenic diet. AR inhibited vascular expressions of endothelin-1 (ET-1) and endothelin-converting enzyme (ECE) induced in rats with an atherogenic diet. On the other hand, AR augmented the vascular expression of endothelial nitric oxide synthase (ecNOS) and restored vascular nitric oxide (NO) production. Furthermore, AR suppressed the elevated expression of vascular nuclear factor-κB (NF-κB) p65 as well as adhesion molecules, including intracellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and E-selectin in rats fed with an atherogenic diet. Also, AR decreased endothelial expression of ICAM-1 and ET-1 in aorta. These results suggest that AR suppresses the development of atherosclerosis in the atherogenic-diet rat model through inhibiting vascular expressions of proinflammatory and adhesion molecules via the regulation of nitric oxide and endothelin system.
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Affiliation(s)
- Mi Kyoung Moon
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
| | - Dae Gill Kang
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
| | - An Sook Lee
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
| | - Ki Bok Yeom
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
| | - Jin Sook Kim
- Korea Institute of Oriental Medicine, Jeonmin-dong, Yusung-gu, Daejeon, 305-811, Republic of Korea
| | - Ho Sub Lee
- Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749, Republic of Korea
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Barton M, Baretella O, Meyer MR. Obesity and risk of vascular disease: importance of endothelium-dependent vasoconstriction. Br J Pharmacol 2012; 165:591-602. [PMID: 21557734 PMCID: PMC3315033 DOI: 10.1111/j.1476-5381.2011.01472.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Revised: 04/04/2011] [Accepted: 04/25/2011] [Indexed: 12/11/2022] Open
Abstract
UNLABELLED Obesity has become a serious global health issue affecting both adults and children. Recent devolopments in world demographics and declining health status of the world's population indicate that the prevalence of obesity will continue to increase in the next decades. As a disease, obesity has deleterious effects on metabolic homeostasis, and affects numerous organ systems including heart, kidney and the vascular system. Thus, obesity is now regarded as an independent risk factor for atherosclerosis-related diseases such as coronary artery disease, myocardial infarction and stroke. In the arterial system, endothelial cells are both the source and target of factors contributing to atherosclerosis. Endothelial vasoactive factors regulate vascular homeostasis under physiological conditions and maintain basal vascular tone. Obesity results in an imbalance between endothelium-derived vasoactive factors favouring vasoconstriction, cell growth and inflammatory activation. Abnormal regulation of these factors due to endothelial cell dysfunction is both a consequence and a cause of vascular disease processes. Finally, because of the similarities of the vascular pathomechanisms activated, obesity can be considered to cause accelerated, 'premature' vascular aging. Here, we will review some of the pathomechanisms involved in obesity-related activation of endothelium-dependent vasoconstriction, the clinical relevance of obesity-associated vascular risk, and therapeutic interventions using 'endothelial therapy' aiming at maintaining or restoring vascular endothelial health. LINKED ARTICLES This article is part of a themed section on Fat and Vascular Responsiveness. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2012.165.issue-3.
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Affiliation(s)
- Matthias Barton
- Molecular Internal Medicine, University of Zurich, Zurich, Switzerland.
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The discovery of endothelium-dependent contraction: The legacy of Paul M. Vanhoutte. Pharmacol Res 2011; 63:455-62. [DOI: 10.1016/j.phrs.2011.02.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2011] [Accepted: 02/28/2011] [Indexed: 01/10/2023]
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Abstract
Intermittent claudication (IC) is one of the most frequent forms of lower extremity peripheral arterial disease (PAD) and is most commonly caused by arterial atherosclerosis. Its clinical manifestation includes fatigue, discomfort, or pain occurring in limb muscles due to exercise-induced ischemia, thus limiting the ability of IC patients to walk and exercise. In addition to lifestyle changes (diet, exercise, and smoking cessation), pharmacological treatments are needed. Pathologically, atherosclerotic lesions cause a mismatch in oxygen supply and metabolic demand in the leg muscles during walking/exercise. This subjects the muscles to repeated ischemia and reperfusion injury that can alter structure and oxidative metabolism, resulting in insufficient utilization of oxygen supply. Despite extensive research efforts, cilostazol and pentoxifylline are the only drugs indicated for relieving the symptoms of IC, with cilostazol demonstrating significant improvement in walking distance and quality of life in these patients. Originally developed as a PDE3 inhibitor, cilostazol was later found to have several other pharmacological actions, and its success has been attributed to its multifactorial actions on platelets, endothelium, smooth muscle, and lipid profiles. Using cilostazol as an example, we discuss the rationales and pitfalls of targeting PDEs in IC, and potential strategies for the development of new and more effective pharmacological treatments.
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Obesity and aging: determinants of endothelial cell dysfunction and atherosclerosis. Pflugers Arch 2010; 460:825-37. [DOI: 10.1007/s00424-010-0860-y] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2010] [Accepted: 06/17/2010] [Indexed: 02/02/2023]
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Meyer MR, Haas E, Prossnitz ER, Barton M. Non-genomic regulation of vascular cell function and growth by estrogen. Mol Cell Endocrinol 2009; 308:9-16. [PMID: 19549587 PMCID: PMC2780565 DOI: 10.1016/j.mce.2009.03.009] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2008] [Revised: 02/22/2009] [Accepted: 03/05/2009] [Indexed: 12/21/2022]
Abstract
Estrogens exert rapid, non-genomic effects, which are mediated by plasma membrane-associated estrogen receptors (mER) mERalpha and mERbeta, and the intracellular transmembrane G protein-coupled estrogen receptor (GPER). Membrane-initiated responses contribute to transcriptional activation, resulting in a complex interplay of nuclear and extra-nuclear mechanisms that mediate the acute physiological responses to estrogens. Non-genomic estrogen signaling also activates a variety of intracellular estrogen signaling pathways that regulate vascular function and cell growth involving rapid but also long-term effects. This review discusses recent advances in understanding of the mechanisms of non-genomic estrogen receptor signaling in the vascular wall.
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Affiliation(s)
- Matthias R. Meyer
- Departement für Innere Medizin, Klinik und Poliklinik für Innere Medizin, Universitätsspital Zürich, Switzerland
| | - Elvira Haas
- Departement für Innere Medizin, Klinik und Poliklinik für Innere Medizin, Universitätsspital Zürich, Switzerland
| | - Eric R. Prossnitz
- Department of Cell Biology and Physiology, Cancer Research and Treatment Center, University of New Mexico Health Sciences Center, Albuquerque, NM 87120, United States
| | - Matthias Barton
- Departement für Innere Medizin, Klinik und Poliklinik für Innere Medizin, Universitätsspital Zürich, Switzerland
- Molecular Internal Medicine, University of Zurich, 8057 Zurich
- Corresponding author: Matthias Barton, M.D., Professor and Head, Molecular Internal Medicine, University of Zurich, LTK Y44 G22, Winterthurer Strasse 190, 8057 Zurich, Switzerland. Tel. +41-44-635 5451 Fax +41-44-635 6875,
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Use of Nebivolol For the Treatment of Endothelial Dysfunction in Patients With Hypertension: The EDEN Registry. J Cardiovasc Pharmacol 2008; 51:202-7. [DOI: 10.1097/fjc.0b013e31815f5aeb] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
It is generally accepted that hypertension doubles the risk of cardiovascular disease, of which coronary heart disease is the most common and lethal. Hypertension is a predisposing factor for the development of stroke, peripheral arterial disease, heart failure and end-state renal disease. Atherosclerosis-causing coronary heart disease is related to the severity of hypertension. Inhibition of calcium entry reduces the active tone of vascular smooth muscle and produces vasodilatation. This pharmacological action has been the basis for the use of calcium-channel blockers (CCBs) for the management of hypertension. Other drug families may achieve this: diuretics, beta-blockers, angiotensin-converting enzyme inhibitors, angiotensin-receptor antagonists. Cardiovascular hypertrophy and atherosclerosis are major complications related to high blood pressure. Cardiac hypertrophy is considered as an independent risk factor associated with abnormalities of diastolic function and can result in heart failure. Atherosclerosis is associated with activation of innate immunity. Atherosclerosis is expressing itself not only as coronary heart disease, but as a cerebrovascular and peripheral arterial disease. By impairing physiological vasomotor function, atherosclerosis includes ultimately necrosis of myocardium. CCBs reduce blood pressure. Do they prevent the progress of the main complications of hypertension? This major question is the matter of the present paper.
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Affiliation(s)
- Théophile Godfraind
- Laboratoire de Pharmacologie, Université Catholique de Louvain, UCL 5410, B1200 Brussels.
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Song GY, Gao Y, Di YW, Pan LL, Zhou Y, Ye JM. HIGH-FAT FEEDING REDUCES ENDOTHELIUM-DEPENDENT VASODILATION IN RATS: DIFFERENTIAL MECHANISMS FOR SATURATED AND UNSATURATED FATTY ACIDS? Clin Exp Pharmacol Physiol 2006; 33:708-13. [PMID: 16895544 DOI: 10.1111/j.1440-1681.2006.04422.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
1. Chronic feeding with a high-fat diet can cause metabolic syndrome in rodents similar to humans, but the role of saturated versus unsaturated fats in vascular tension remains unclear. 2. The present study shows that rats on a diet rich in either saturated or unsaturated fat had higher blood pressure compared with chow-fed rats (approximately 130 vs 100 mmHg, respectively), along with hyperlipidaemia and insulin resistance. Compared with responses of phenylephrine-preconstricted artery segments from chow-fed rats, vasorelaxation of isolated renal arteries from high-fat fed rats was reduced substantially (> 50%) in response to acetylcholine (0.01-10 micromol/L) and moderately to nitroprusside (>or=1 micromol/L) at low concentrations. Acetylcholine-induced vasorelaxation of arteries from high-fat fed rats was also more sensitive to inhibition by the nitric oxide (NO) synthase inhibitors NG-nitro-L-arginine and methylene blue. 3. In human umbilical vein endothelial cells, the production of NO and endothelin-1 was significantly inhibited by unsaturated fatty acids. In comparison, saturated fatty acids stimulated endothelin-1 production without altering NO production. 4. The data indicate that both saturated and unsaturated high-fat feeding may result in an increase in blood pressure owing to reduced endothelium-dependent vasorelaxation in the arterial system. The impaired endothelium-dependent vasorelaxation induced by saturated and unsaturated fatty acids may involve different mechanisms.
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Affiliation(s)
- Guang-Yao Song
- Institute of Geriatric Medicine, General Hospital of Hebei Province, Shijiazhuang, Hebei, China.
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Godfraind T. Antioxidant effects and the therapeutic mode of action of calcium channel blockers in hypertension and atherosclerosis. Philos Trans R Soc Lond B Biol Sci 2006; 360:2259-72. [PMID: 16321796 PMCID: PMC1569592 DOI: 10.1098/rstb.2005.1774] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Drugs currently known as calcium channel blockers (CCB) were initially called calcium antagonists because of their ability to inhibit calcium-evoked contractions in depolarized smooth muscles. Blocking the entry of calcium reduces the active tone of vascular smooth muscle and produces vasodilatation. This pharmacological property has been the basis for the use of CCBs in the management of hypertension and coronary heart disease. A major question is whether drugs reducing blood pressure have other effects that help prevent the main complications of hypertension, such as atherosclerosis, stroke, peripheral arterial disease, heart failure and end-state renal disease. Experimental studies that focus on this question are reviewed in the present paper.
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Affiliation(s)
- Théophile Godfraind
- Faculté de Médecine, Université Catholique de Louvain Laboratoire de Pharmacologie UCL5410, 1200 Bruxelles, Belgium.
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Gelzer ARM, Attmann T, Radicke D, Nydam D, Candinas R, Lutter G. Effects of acute systemic endothelin receptor blockade on cardiac electrophysiology in vivo. J Cardiovasc Pharmacol 2005; 44:564-70. [PMID: 15505493 DOI: 10.1097/00005344-200411000-00008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BQ-123, a selective endothelin-A receptor antagonist, has been demonstrated to suppress arrhythmias. However, the role of physiologic levels of endogenous endothelin-1 (ET-1) with respect to electrophysiologic properties of the heart is unknown. BQ-123 (0.45, 0.9, 1.8, 3.6, 7.2, and 14.4 microg/kg/min; n = 10) or saline (control, n = 5) was administered IV for 15 minutes of continuous-rate infusion at incremental doses to anesthetized normal pigs. BQ-123 had no effect on PR and QT interval, QRS duration, intraatrial and AV nodal conduction time as well as the atrial, AV nodal, and ventricular effective refractory periods. As compared with baseline, BQ-123 at 7.2 and 14.4 microg/kg/min caused an increase in heart rate (99 +/- 17 versus 110 +/- 14 and 118 +/- 14 bpm, respectively; P < 0.05), shortened sinus node recovery time (818 +/- 165 versus 641 +/- 69 and 609 +/- 74 milliseconds, respectively; P < 0.05) and decreased mean arterial pressure at 14.4 microg/kg/min (95 +/- 18 versus 80 +/- 11 mm Hg; P < 0.05). We conclude that in the normal pig, physiologic levels of ET-1 have no effect on conduction properties of atrial, AV nodal, or Purkinje fibers. However, antagonism of ET-1 by BQ-123 unmasks the effect of ET-1 on maintenance of vasomotor tone, which in turn may affect heart rate and sinus node automaticity in the intact pig.
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Affiliation(s)
- Anna R M Gelzer
- College of Veterinary Medicine, Cornell University, Ithaca, New York, USA.
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Meerarani P, Smart EJ, Toborek M, Boissonneault GA, Hennig B. Cholesterol attenuates linoleic acid-induced endothelial cell activation. Metabolism 2003; 52:493-500. [PMID: 12701065 DOI: 10.1053/meta.2003.50087] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Vascular endothelial cell activation and dysfunction are critical early events in atherosclerosis. Even though very low or high levels of cholesterol can compromise cellular functions, cholesterol is a critical membrane component and may protect the vascular endothelium from oxidative stress and polyunsaturated fatty acid-mediated inflammatory responses. We have previously shown that the parent omega-6 fatty acid linoleic acid can markedly activate vascular endothelial cells. We now propose that membrane cholesterol can modify and inhibit linoleic acid-mediated endothelial cell dysfunction. To test this hypothesis, pulmonary artery endothelial cells were incubated with cholesterol (0 to 100 micromol/L) for 24 hours and then treated with 90 micromol/L of linoleic acid (18:2n-6) for 6 to 24 hours. In control cells, treatment with linoleic acid reduced intracellular glutathione levels and induced the DNA binding activity of nuclear factor-kappaB (NF-kappaB) leading to the upregulation of interleukin-6 (IL-6). In addition, the expression of endothelial nitric oxide synthase (eNOS) was altered, with linoleic acid increasing eNOS activity. In contrast, enrichment with cholesterol enhanced glutathione levels and reduced the linoleic acid-induced activation of NF-kappaBand the production of IL-6. Prior exposure to 50 micromol/L cholesterol also prevented the fatty acid-induced increase in eNOS activation. Cholesterol loading activated peroxisome proliferator-activated receptor-gamma (PPAR-gamma), a nuclear receptor that can decrease inflammatory responses. Furthermore, the PPAR-gamma agonist thiazolidinedione markedly downregulated the NF-kappaB activation mediated by linoleic acid. Our data suggest that signaling pathways linked to endothelial cell activation by prooxidant and proinflammatory insults may be influenced by cellular cholesterol levels.
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Affiliation(s)
- Purushothaman Meerarani
- Department of Animal Sciences, the Graduate Center for Nutritional Sciences, University of Kentucky, Lexington 40546-0215, USA
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Abstract
PURPOSE OF REVIEW The concept that angiotensin II plays a central role in early atherogenesis, progression to atherosclerotic plaque, and the most serious clinical sequelae of coronary artery disease is the subject of considerable current interest. Results from recent large clinical trials confirm that blunting of the renin-angiotensin system through either angiotensin converting enzyme inhibition or angiotensin II type 1 receptor blockade incurs significant beneficial outcomes in patients with coronary artery disease. The exact mechanisms for these effects are not yet clear, but are suggested by studies demonstrating that suppression of the renin-angiotensin system is associated with muted vascular oxidative stress. RECENT FINDINGS As most of the biological effects of the renin-angiotensin system occur through stimulation of the angiotensin II type 1 receptor, the focus of this review is on changes in the vascular wall mediated by this receptor and primarily related to endothelial and vascular smooth muscle cells, monocyte/macrophages and platelets. The interactions between angiotensin II and nitric oxide exert particular demands on the vascular capacity to adapt to dyslipidemia, hypertension, estrogen deficiency and diabetes mellitus that appear to exacerbate atherogenesis. Associated with each of these conditions is angiotensin II-mediated stimulation of macrophages, platelet aggregation, plasminogen activator inhibitor 1, endothelial dysfunction, vascular smooth muscle cell proliferation and migration, apoptosis, leukocyte recruitment, fibrogenesis and thrombosis. SUMMARY Inhibition of the actions of angiotensin II serves a dual purpose: indirectly through reduction of mechanical stress on the vascular wall, and directly by diminished stimulation for vascular restructuring and remodeling. Collectively, data from studies published over the last year confirm and extend the notion that angiotensin II is a true cytokine prevalent at all stages of atherogenesis.
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Affiliation(s)
- William B Strawn
- Hypertension and Vascular Disease Center, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA
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Li J, De Leon H, Ebato B, Cui J, Todd J, Chronos NAF, Robinson KA. Endovascular irradiation impairs vascular functional responses in noninjured pig coronary arteries. CARDIOVASCULAR RADIATION MEDICINE 2002; 3:152-62. [PMID: 12974366 DOI: 10.1016/s1522-1865(03)00096-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
PURPOSE To assess the effects of endovascular irradiation on vascular structure and function in pig coronary arteries in the absence of vascular injury. METHODS AND MATERIALS Vasomotor responses to contractions of KCl and prostaglandin F2alpha (PGF2alpha), relaxations to endothelium-dependent (substance P, A23187) and -independent (sodium nitroprusside, SNP) agents; endothelial morphology and superoxide anion (02*-) production were investigated in control (naive), sham and irradiated (20 Gy, 32P) arteries 1 month after irradiation. RESULTS Contractions to KCl and PGF2alpha in the presence of L-NAME were significantly decreased, relaxations to substance P and A23187 were abolished and SNP-induced relaxation was potentiated in irradiated arteries compared to naive and sham-treated vessels. Scanning electron microscopy (SEM) revealed enlarged endothelial cells (ECs) exhibiting surface microvilli. O2*- production was significantly increased in irradiated vessels (437.0 +/- 37.3 vs. 126.0 +/- 11.6 RLU/s/mg tissue, P < .01). CONCLUSIONS One month after brachytherapy, normal pig coronary arteries showed abnormal vascular reactivity, altered endothelial morphology and increased production of O2*-. Lack of relaxation to substance P and A23187 reflects ionizing radiation-mediated damage to ECs, whereas potentiation of relaxation to SNP suggests additional deleterious effects on medial smooth muscle cells (SMCs). Increased O2*- production might have contributed to endothelial dysfunction by scavenging nitric oxide (NO).
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MESH Headings
- Angioplasty/adverse effects
- Animals
- Beta Particles/adverse effects
- Coronary Vessels/pathology
- Coronary Vessels/physiopathology
- Coronary Vessels/radiation effects
- Disease Models, Animal
- Endothelium, Vascular/pathology
- Endothelium, Vascular/physiopathology
- Endothelium, Vascular/radiation effects
- Female
- Femoral Artery/pathology
- Femoral Artery/physiopathology
- Femoral Artery/radiation effects
- Isometric Contraction/physiology
- Isometric Contraction/radiation effects
- Male
- Muscle, Smooth, Vascular/pathology
- Muscle, Smooth, Vascular/physiopathology
- Muscle, Smooth, Vascular/radiation effects
- Swine, Miniature
- Time Factors
- Vasomotor System/pathology
- Vasomotor System/physiopathology
- Vasomotor System/radiation effects
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Affiliation(s)
- Jinsheng Li
- American Cardiovascular Research Institute, 3155 Northwoods Place, Norcross, GA 30071, USA.
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