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Yilihamu Y, Xu R, Jia W, Kukun H, Aihemaiti D, Chang Y, Ding S, Wang Y. Role of long non-coding RNA TCONS_02443383 in regulating cell adhesion and peroxisome proliferator-activated receptor (PPAR) signaling genes in atherosclerosis: A New Zealand white rabbit model study. Gene 2024; 927:148694. [PMID: 38878987 DOI: 10.1016/j.gene.2024.148694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 06/06/2024] [Accepted: 06/12/2024] [Indexed: 06/27/2024]
Abstract
OBJECTIVE In this study, we performed RNA sequencing (RNA-seq) on the abdominal aorta tissue of New Zealand rabbits and investigated the potential association of lncRNA TCONS_02443383 with the development of AS through bioinformatics analysis of the sequencing data. The obtained results were further validated using quantitative real-time polymerase chain reaction (qRT-PCR). METHOD We induced an AS model in New Zealand rabbits by causing balloon injury to the abdominal aorta vascular wall and administering a high-fat diet. We then upregulated the expression level of the lncRNA TCONS_02443383 by injecting lentiviral plasmids through the ear vein. RNA sequencing (RNA-seq) was performed on the abdominal aorta tissues. We conducted Kyoto Encyclopedia of Genes and Genomes (KEGG) signaling pathway and Gene Ontology (GO) analyses. RESULT The overexpression of the lncRNA TCONS_02443383 led to an upregulation of peroxisome proliferator-activated receptor (PPAR) signaling pathways as well as genes related to cell adhesion. CONCLUSION The overexpression of the lncRNA TCONS_02443383 can inhibit the occurrence and development of AS by upregulating peroxisome proliferator-activated receptor (PPAR) signaling pathways and genes related to cell adhesion.
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Affiliation(s)
- Yilinuer Yilihamu
- Department of Radiology, First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830054, China
| | - Rui Xu
- Department of Radiology, First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830054, China
| | - Wenxiao Jia
- Department of Radiology, First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830054, China
| | - Hanjiaerbieke Kukun
- Department of Radiology, First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830054, China
| | - Dilinuerkezi Aihemaiti
- Department of Radiology, First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830054, China
| | - Yifan Chang
- Department of Radiology, First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830054, China
| | - Shuang Ding
- Department of Radiology, First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830054, China.
| | - Yunling Wang
- Department of Radiology, First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830054, China.
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Endothelial Progenitor Cells: An Appraisal of Relevant Data from Bench to Bedside. Int J Mol Sci 2021; 22:ijms222312874. [PMID: 34884679 PMCID: PMC8657735 DOI: 10.3390/ijms222312874] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/15/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022] Open
Abstract
The mobilization of endothelial progenitor cells (EPCs) into circulation from bone marrow is well known to be present in several clinical settings, including acute coronary syndrome, heart failure, diabetes and peripheral vascular disease. The aim of this review was to explore the current literature focusing on the great opportunity that EPCs can have in terms of regenerative medicine.
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McCaffrey TA, Toma I, Yang Z, Katz R, Reiner J, Mazhari R, Shah P, Tackett M, Jones D, Jepson T, Falk Z, Wargodsky R, Shtakalo D, Antonets D, Ertle J, Kim JH, Lai Y, Arslan Z, Aledort E, Alfaraidy M, Laurent GS. RNA sequencing of blood in coronary artery disease: involvement of regulatory T cell imbalance. BMC Med Genomics 2021; 14:216. [PMID: 34479557 PMCID: PMC8414682 DOI: 10.1186/s12920-021-01062-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 08/19/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Cardiovascular disease had a global prevalence of 523 million cases and 18.6 million deaths in 2019. The current standard for diagnosing coronary artery disease (CAD) is coronary angiography. Surprisingly, despite well-established clinical indications, up to 40% of the one million invasive cardiac catheterizations return a result of 'no blockage'. The present studies employed RNA sequencing of whole blood to identify an RNA signature in patients with angiographically confirmed CAD. METHODS Whole blood RNA was depleted of ribosomal RNA (rRNA) and analyzed by single-molecule sequencing of RNA (RNAseq) to identify transcripts associated with CAD (TRACs) in a discovery group of 96 patients presenting for elective coronary catheterization. The resulting transcript counts were compared between groups to identify differentially expressed genes (DEGs). RESULTS Surprisingly, 98% of DEGs/TRACs were down-regulated ~ 1.7-fold in patients with mild to severe CAD (> 20% stenosis). The TRACs were independent of comorbid risk factors for CAD, such as sex, hypertension, and smoking. Bioinformatic analysis identified an enrichment in transcripts such as FoxP1, ICOSLG, IKZF4/Eos, SMYD3, TRIM28, and TCF3/E2A that are likely markers of regulatory T cells (Treg), consistent with known reductions in Tregs in CAD. A validation cohort of 80 patients confirmed the overall pattern (92% down-regulation) and supported many of the Treg-related changes. TRACs were enriched for transcripts associated with stress granules, which sequester RNAs, and ciliary and synaptic transcripts, possibly consistent with changes in the immune synapse of developing T cells. CONCLUSIONS These studies identify a novel mRNA signature of a Treg-like defect in CAD patients and provides a blueprint for a diagnostic test for CAD. The pattern of changes is consistent with stress-related changes in the maturation of T and Treg cells, possibly due to changes in the immune synapse.
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Affiliation(s)
- Timothy A McCaffrey
- Division of Genomic Medicine, Department of Medicine, The George Washington Medical Center, The George Washington University, 2300 I Street NW, Ross Hall 443A, Washington, DC, 20037, USA.
- The St. Laurent Institute, Vancouver, WA, USA.
- Department of Microbiology, Immunology, and Tropical Medicine, The George Washington University, Washington, DC, 20037, USA.
- True Bearing Diagnostics, Washington, DC, 20037, USA.
| | - Ian Toma
- Division of Genomic Medicine, Department of Medicine, The George Washington Medical Center, The George Washington University, 2300 I Street NW, Ross Hall 443A, Washington, DC, 20037, USA
- Department of Clinical Research and Leadership, The George Washington University, Washington, DC, 20037, USA
- True Bearing Diagnostics, Washington, DC, 20037, USA
| | - Zhaoquing Yang
- Division of Genomic Medicine, Department of Medicine, The George Washington Medical Center, The George Washington University, 2300 I Street NW, Ross Hall 443A, Washington, DC, 20037, USA
| | - Richard Katz
- Division of Cardiology, Department of Medicine, The George Washington University , Washington, DC, 20037, USA
| | - Jonathan Reiner
- Division of Cardiology, Department of Medicine, The George Washington University , Washington, DC, 20037, USA
| | - Ramesh Mazhari
- Division of Cardiology, Department of Medicine, The George Washington University , Washington, DC, 20037, USA
| | - Palak Shah
- Inova Heart and Vascular Institute, Fairfax, VA, USA
| | | | | | - Tisha Jepson
- SeqLL, Inc., Woburn, MA, USA
- The St. Laurent Institute, Vancouver, WA, USA
- True Bearing Diagnostics, Washington, DC, 20037, USA
| | - Zachary Falk
- Division of Genomic Medicine, Department of Medicine, The George Washington Medical Center, The George Washington University, 2300 I Street NW, Ross Hall 443A, Washington, DC, 20037, USA
| | - Richard Wargodsky
- Division of Genomic Medicine, Department of Medicine, The George Washington Medical Center, The George Washington University, 2300 I Street NW, Ross Hall 443A, Washington, DC, 20037, USA
| | - Dmitry Shtakalo
- A.P. Ershov Institute of Informatics Systems SB RAS, 6, Acad. Lavrentjeva Ave, Novosibirsk, Russia, 630090
| | - Denis Antonets
- A.P. Ershov Institute of Informatics Systems SB RAS, 6, Acad. Lavrentjeva Ave, Novosibirsk, Russia, 630090
| | - Justin Ertle
- Division of Genomic Medicine, Department of Medicine, The George Washington Medical Center, The George Washington University, 2300 I Street NW, Ross Hall 443A, Washington, DC, 20037, USA
| | - Ju H Kim
- Division of Cardiology, Department of Medicine, The George Washington University , Washington, DC, 20037, USA
| | - Yinglei Lai
- Department of Statistics, Biostatistics Center, The George Washington University, Washington, DC, 20037, USA
| | - Zeynep Arslan
- Division of Genomic Medicine, Department of Medicine, The George Washington Medical Center, The George Washington University, 2300 I Street NW, Ross Hall 443A, Washington, DC, 20037, USA
| | - Emily Aledort
- Division of Genomic Medicine, Department of Medicine, The George Washington Medical Center, The George Washington University, 2300 I Street NW, Ross Hall 443A, Washington, DC, 20037, USA
| | - Maha Alfaraidy
- Division of Genomic Medicine, Department of Medicine, The George Washington Medical Center, The George Washington University, 2300 I Street NW, Ross Hall 443A, Washington, DC, 20037, USA
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Markopoulou P, Papanikolaou E, Loukopoulou S, Galina P, Mantzou A, Siahanidou T. Increased circulating endothelial progenitor cells (EPCs) in prepubertal children born prematurely: a possible link between prematurity and cardiovascular risk. Pediatr Res 2021; 90:156-165. [PMID: 33038874 DOI: 10.1038/s41390-020-01190-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 08/17/2020] [Accepted: 09/22/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Endothelial progenitor cells (EPCs) ensure vascular integrity and neovascularization. No studies have investigated EPCs in preterm-born children beyond infancy. METHODS One hundred and thirty-six prepubertal children were enrolled: 63 preterm and 73 born at term (controls). Circulating CD34(+)/VEGFR-2(+)/CD45(-) and CD34(+)/VEGFR-2(+)/CD45dim EPCs were measured in preterm-born children compared to controls. Body mass index (BMI), waist-to-hip ratio (WHR), neck circumference, systolic and diastolic blood pressure (SBP and DBP, respectively), fasting glucose, insulin, lipid profile, common carotid and abdominal aortic intima-media thickness (cIMT and aIMT, respectively), endothelium-dependent brachial artery flow-mediated dilation (FMD), and echocardiographic parameters were also assessed. RESULTS Circulating CD34(+)/VEGFR-2(+)/CD45(-) and CD34(+)/VEGFR-2(+)/CD45dim EPCs were significantly higher in preterm-born children compared to controls (p < 0.001 and p < 0.001, respectively). In total study population and in the preterm-born group, EPCs were significantly lower in children born to mothers with gestational diabetes compared to non-diabetic mothers. Prematurity was associated with higher WHR, neck circumference, SBP, DBP, cIMT, aIMT, mean pressure, and velocity of pulmonary artery; the peak velocity of the brachial artery was significantly lower in children born prematurely. In multiple regression analysis, preterm birth and maternal gestational diabetes were recognized as independent predictors of EPCs. CONCLUSIONS Circulating EPCs were increased in prepubertal preterm-born children in comparison with peers born full-term. Maternal gestational diabetes was associated with a decrease in EPCs. IMPACT Mounting evidence supports the adverse effect of prematurity on cardiovascular health. However, the underlying mechanisms that could lead to endothelial dysfunction in preterm-born individuals are not fully understood. Endothelial progenitor cells (EPCs) ensure vascular integrity, normal endothelial function and neovascularization. No studies have investigated the EPCs counts in peripheral blood beyond infancy in children born prematurely. Circulating EPCs were significantly higher in preterm-born prepubertal children compared to controls, thus indicating that prematurity is possibly associated with endothelial damage. In total study population and in the preterm-born group, maternal gestational diabetes was associated with decreased EPCs concentrations.
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Affiliation(s)
- Panagiota Markopoulou
- Neonatal Unit, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Eleni Papanikolaou
- Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Sofia Loukopoulou
- Department of Cardiology, "Agia Sofia" Children's Hospital, Athens, Greece
| | - Paraskevi Galina
- Radiology Department, "Agia Sofia" Children's Hospital, Athens, Greece
| | - Aimilia Mantzou
- Unit of Clinical and Translational Research in Endocrinology, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Tania Siahanidou
- Neonatal Unit, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.
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Fadini GP, Mehta A, Dhindsa DS, Bonora BM, Sreejit G, Nagareddy P, Quyyumi AA. Circulating stem cells and cardiovascular outcomes: from basic science to the clinic. Eur Heart J 2020; 41:4271-4282. [PMID: 31891403 PMCID: PMC7825095 DOI: 10.1093/eurheartj/ehz923] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 10/19/2019] [Accepted: 12/05/2019] [Indexed: 02/06/2023] Open
Abstract
The cardiovascular and haematopoietic systems have fundamental inter-relationships during development, as well as in health and disease of the adult organism. Although haematopoietic stem cells (HSCs) emerge from a specialized haemogenic endothelium in the embryo, persistence of haemangioblasts in adulthood is debated. Rather, the vast majority of circulating stem cells (CSCs) is composed of bone marrow-derived HSCs and the downstream haematopoietic stem/progenitors (HSPCs). A fraction of these cells, known as endothelial progenitor cells (EPCs), has endothelial specification and vascular tropism. In general, the levels of HSCs, HSPCs, and EPCs are considered indicative of the endogenous regenerative capacity of the organism as a whole and, particularly, of the cardiovascular system. In the last two decades, the research on CSCs has focused on their physiologic role in tissue/organ homoeostasis, their potential application in cell therapies, and their use as clinical biomarkers. In this review, we provide background information on the biology of CSCs and discuss in detail the clinical implications of changing CSC levels in patients with cardiovascular risk factors or established cardiovascular disease. Of particular interest is the mounting evidence available in the literature on the close relationships between reduced levels of CSCs and adverse cardiovascular outcomes in different cohorts of patients. We also discuss potential mechanisms that explain this association. Beyond CSCs' ability to participate in cardiovascular repair, levels of CSCs need to be interpreted in the context of the broader connections between haematopoiesis and cardiovascular function, including the role of clonal haematopoiesis and inflammatory myelopoiesis.
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Affiliation(s)
- Gian Paolo Fadini
- Department of Medicine, University of Padova, Via Giustiniani 2, 35128 Padova, Italy
| | - Anurag Mehta
- Division of Cardiology, Department of Medicine, Emory Clinical Cardiovascular Research Institute, Emory University School of Medicine, 201 Dowman Drive, Atlanta, GA 30322, USA
| | - Devinder Singh Dhindsa
- Division of Cardiology, Department of Medicine, Emory Clinical Cardiovascular Research Institute, Emory University School of Medicine, 201 Dowman Drive, Atlanta, GA 30322, USA
| | | | - Gopalkrishna Sreejit
- Division of Cardiac Surgery, Department of Surgery, Ohio State University, Columbus, OH 43210, USA
| | - Prabhakara Nagareddy
- Division of Cardiac Surgery, Department of Surgery, Ohio State University, Columbus, OH 43210, USA
| | - Arshed Ali Quyyumi
- Division of Cardiology, Department of Medicine, Emory Clinical Cardiovascular Research Institute, Emory University School of Medicine, 201 Dowman Drive, Atlanta, GA 30322, USA
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The importance of physiologic ischemia training in preventing the development of atherosclerosis: the role of endothelial progenitor cells in atherosclerotic rabbits. Coron Artery Dis 2020; 30:377-383. [PMID: 30724819 PMCID: PMC6635124 DOI: 10.1097/mca.0000000000000723] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Objective The aim of this study was to investigate the effects of physiologic ischemia training (PIT) on the proliferation of endothelial progenitor cells (EPCs) and the corresponding changes in the influencing factors in atherosclerotic rabbits, including vascular endothelial growth factor (VEGF) and nitric oxide (NO). Materials and methods Eighteen rabbits were assigned randomly to three groups: a high-fat diet (HD) group, an HD-with-training (HT) group, and a control group. Rabbits in the HD and HT groups were fed high-fat food and those in the HT group were administered PIT from the seventh week onward. Atherosclerotic plaques in the thoracic aorta were stained with Oil Red O and measured by Image-Pro Plus 6.0; VEGF expression was measured using an enzyme-linked immunosorbent assay and real-time PCR to determine both protein and mRNA levels. EPCs were counted using a fluorescence-activated cell sorter; NO in plasma was measured by the Griess reaction; and the levels of blood lipids were measured using a biochemical analyzer. Results More lipid-containing lesions were found in the HD group than in the HT group (P<0.01), whereas atherosclerotic plaques were not observed in the control group. In addition, the expression of VEGF, production of NO, and levels of blood lipids were consistent with the proportion of plaques. It is noteworthy that the proliferation of EPCs increased in the HT group throughout the 10 weeks, whereas those in the control and HD groups increased in the first 6 weeks and declined during the 10th week (P<0.01). Conclusion PIT may prevent the development of aortic atherosclerosis by promoting the proliferation of EPCs in atherosclerotic rabbits.
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7
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The carotid plaque as paradigmatic case of site-specific acceleration of aging process: The microRNAs and the inflammaging contribution. Ageing Res Rev 2020; 61:101090. [PMID: 32474155 DOI: 10.1016/j.arr.2020.101090] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/31/2020] [Accepted: 05/14/2020] [Indexed: 02/07/2023]
Abstract
Atherosclerosis is considered a chronic inflammatory disease of arteries associated with the aging process. Many risk factors have been identified and they are mainly related to life-styles, gene-environment interactions and socioeconomic status. Carotid and coronary artery diseases are the two major atherosclerotic conditions, being the primary cause of stroke and heart attack, respectively. Nevertheless, carotid plaque assumes particular aspects not only for the specific molecular mechanisms, but also for the types of atheroma which may be associated with a better or a worst prognosis. The identification of circulating blood biomarkers able to distinguish carotid plaque types (stable or vulnerable) is a crucial step for the improvement of adequate therapeutic approaches avoiding or delaying endarterectomy in the oldest old individuals (> 80 years), a population predicted to growth in the next years. The review highlights the most recent knowledge on carotid plaque molecular mechanisms, focusing on microRNAs (miRs), as a site-specific accelerated aging within the conceptual framework of Geroscience for new affordable therapies.
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Leal V, Ribeiro CF, Oliveiros B, António N, Silva S. Intrinsic Vascular Repair by Endothelial Progenitor Cells in Acute Coronary Syndromes: an Update Overview. Stem Cell Rev Rep 2020; 15:35-47. [PMID: 30345477 DOI: 10.1007/s12015-018-9857-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Bone marrow-derived endothelial progenitor cells (EPCs) play a key role in the maintenance of endothelial homeostasis and endothelial repair at areas of vascular damage. The quantification of EPCs in peripheral blood by flow cytometry is a strategy to assess this reparative capacity. The number of circulating EPCs is inversely correlated with the number of cardiovascular risk factors and to the occurrence of cardiovascular events. Therefore, monitoring EPCs levels may provide an accurate assessment of susceptibility to cardiovascular injury, greatly improving risk stratification of patients with high cardiovascular risk, such as those with an acute myocardial infarction. However, there are many issues in the field of EPC identification and quantification that remain unsolved. In fact, there have been conflicting protocols used to the phenotypic identification of EPCs and there is still no consensual immunophenotypical profile that corresponds exactly to EPCs. In this paper we aim to give an overview on EPCs-mediated vascular repair with special focus on acute coronary syndromes and to discuss the different phenotypic profiles that have been used to identify and quantify circulating EPCs in several clinical studies. Finally, we will synthesize evidence on the prognostic role of EPCs in patients with high cardiovascular risk.
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Affiliation(s)
- Vânia Leal
- Group of Pharmacology and Pharmaceutical Care, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548, Coimbra, Portugal.
| | - Carlos Fontes Ribeiro
- Institute of Pharmacology and Experimental Therapeutics, Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Bárbara Oliveiros
- Laboratory of Biostatistics and Medical Informatics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Coimbra Institute for Biomedical Imaging and Translational Research, University of Coimbra, Coimbra, Portugal.,Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Natália António
- Institute of Pharmacology and Experimental Therapeutics, Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Cardiology Department, Coimbra Hospital and Universitary Centre, Coimbra, Portugal
| | - Sónia Silva
- Group of Pharmacology and Pharmaceutical Care, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548, Coimbra, Portugal.,Institute of Pharmacology and Experimental Therapeutics, Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Cherepanova AV, Akisheva D, Popova TV, Chelobanov BP, Chesalov YA, Godovikova TS, Karpenko AA, Laktionov PP. RGD Peptide–Albumin Conjugate for Endothelization of Electrospun Materials. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1068162019060116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Wang H, Huang H, Ding SF. Sphingosine-1-phosphate promotes the proliferation and attenuates apoptosis of Endothelial progenitor cells via S1PR1/S1PR3/PI3K/Akt pathway. Cell Biol Int 2018; 42:1492-1502. [PMID: 29790626 DOI: 10.1002/cbin.10991] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/20/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Hang Wang
- Department of Cardiology; Wuhan General Hospital of PLA; Wuhan 430070 China
- Clinic Center; China Life Health Industry Group; Shenzhen 515000 China
| | - Hao Huang
- Medical Project Department; Livzon Pharmaceutical Group Inc.; Zhuhai 519045 China
| | - Shi-Fang Ding
- Department of Cardiology; Wuhan General Hospital of PLA; Wuhan 430070 China
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Abdellatif H, Shiha G. PD-L1 Expression on Circulating CD34+ Hematopoietic Stem Cells Closely Correlated with T-cell Apoptosis in Chronic Hepatitis C Infected Patients. Int J Stem Cells 2018; 11:78-86. [PMID: 29291600 PMCID: PMC5984061 DOI: 10.15283/ijsc17047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 10/12/2017] [Accepted: 11/10/2017] [Indexed: 01/01/2023] Open
Abstract
Background and Objectives Lack of understanding of the interplay between hematopoietic stem cells (HSCs) and the immune system has severely hampered stem cell research. Programmed death-1 (PD-L1) has been reported on parenchymal cells in patients with chronically inflamed livers and found to play an essential role in T cell homeostasis regulation. However, the bidirectional interaction between HSCs and lymphocytes remains elusive. Here, we aimed to get more insight into circulating CD34+ HSCs PD-L1 expression and T cell apoptosis in chronic HCV infected patients. Methods CD34+ HSCs were isolated and purified by immunomagnetic separation. PD-L1 expression was analyzed by quantitative PCR and flow cytometry. Furthermore, co-culture experiments between CD34+ HSCs and T-lymphocytes were established. T-cell lymphocyte apoptosis in peripheral blood and in cultures was detected. Results CD34+ HSCs constitutively express low levels of PD-L1. Its expression is up-regulated in chronic HCV infected patients. Moreover, PD-L1 expression on circulating CD34+ HSCs enhanced T cell apoptosis in peripheral blood and co-culture. Conclusion Our results suggest novel bidirectional interplay between HSCs and lymphocytes mediated by PD-L1 expression on CD34+ HSCs. PD-L1 expression correlated with T-cell lymphocyte apoptosis. This may contribute to immunomodulatory properties of HSCs which improves its use for allogeneic transplantation.
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Affiliation(s)
- Hussein Abdellatif
- Department of Anatomy and Embryology, Faculty of Medicine, University of Mansoura, Mansoura, Egypt.,Department of Anatomy, College of Medicine, University of Bisha, Bisha, Saudi Arabia
| | - Gamal Shiha
- Department of Internal Medicine, Faculty of Medicine, University of Mansoura, Mansoura, Egypt.,Head of Egyptian Liver Research Institute and Hospital (ELRIAH), Mansoura, Egypt
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The ratio of circulating regulatory cluster of differentiation 4 T cells to endothelial progenitor cells predicts clinically significant acute rejection after heart transplantation. J Heart Lung Transplant 2018; 37:496-502. [DOI: 10.1016/j.healun.2017.10.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 09/27/2017] [Accepted: 10/18/2017] [Indexed: 11/23/2022] Open
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Abdellatif H. Circulating CD34+ hematopoietic stem/progenitor cells paralleled with level of viremia in patients chronically infected with hepatitis B virus. Regen Med Res 2018; 6:1. [PMID: 29461203 PMCID: PMC5881159 DOI: 10.1051/rmr/170005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 12/25/2017] [Indexed: 12/13/2022] Open
Abstract
Introduction: Liver regeneration is a heterogeneous process involving proliferation of different cell types in response to injury. Bone marrow derived stem cells may be involved in this process, by making contribution to parenchymal restoration and cellular replacement. We aimed to investigate the correlation between level of circulating mobilized CD34+ hematopoietic stem progenitor cells (HSPCs) and viremia level in patients chronically infected with hepatitis B virus (HBV). Methods: Blood samples were prospectively collected for assessing percentage and absolute counts of circulating CD34+ HSPCs and viral load level using flow cytometry and RT-PCR respectively. Patients with chronic hepatitis B (CHB) (n = 30), Entecavir (ETV) treated subjects (n = 30) and 20 age and gender matched healthy controls were enrolled in this study. Results were expressed as mean ± SD. Results and discussion: A significant increase in circulating CD34+ HSPCs level was observed in CHB patients (5 ± 3.1, 324 ± 195 × 103/ml) as compared to ETV treated subjects (0.57 ± 0.27,1022 ± 325) and healthy controls (0.53 ± 0.37, 694 ± 254, P < 0.001) in regards to percentage and absolute counts respectively. Levels of CD34+ HSPCs strongly and positively correlated with HBV DNA viral load levels in CHB patients (r2 = 0.8417, 0.649, P < 0.001).Thus, in chronic liver disorders (CHB), when reduced regenerative capacity of hepatocytes is reached, BMSCs mobilization occurs and their level increases in peripheral blood. The level of circulating CD34+ cells in peripheral blood of CHB patients paralleled with the hepatitis B viral load.
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Affiliation(s)
- Hussein Abdellatif
- Anatomy and Embryology Department, Faculty of Medicine, University of Mansoura, Mansoura, Egypt - Department of Anatomy, College of Medicine, University of Bisha, Bisha, Saudi Arabia
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Seang S, Kelesidis T, Huynh D, Park S, Moe AA, Currier JS, Lake JE. Low Levels of Endothelial Progenitor Cells and Their Association with Systemic Inflammation and Monocyte Activation in Older HIV-Infected Men. AIDS Res Hum Retroviruses 2018; 34:39-45. [PMID: 29226690 DOI: 10.1089/aid.2017.0057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Endothelial progenitor cells (EPCs) repair damaged vascular endothelium, and low circulating EPC levels have been associated with cardiovascular disease (CVD). CD34+/KDR+ EPCs are commonly reported in the literature and CD34+/CD133+/KDR+ EPCs are rare in circulation but highly specific for endothelial lineage. HIV-infected (HIV+) adults have chronic inflammation and increased CVD risk, but the relationship between CVD, vascular inflammation, and EPCs in HIV remains unclear. In a pilot study, EPCs were measured in 57 HIV+ men [≥50 years old, HIV-1 RNA <50 copies/ml on antiretroviral therapy (ART)] by real-time flow cytometry using cellular immaturity (CD34 and/or CD133) and endothelial commitment (KDR) markers. Fasting inflammatory biomarker levels were measured by ELISA. Median age was 57 years; CD4+ T lymphocyte count was 570 cells/mm3. Prevalent CVD risk factors included 16% diabetes, 28% hypertension, 53% dyslipidemia, and 33% smoking. Median (interquartile range) EPC values were CD34+/KDR+ 0.1 (0.0-0.9) cells/105 peripheral blood mononuclear cells (PBMCs) and CD34+/CD133+/KDR+ 0.1 (0.0-0.9) cells/105 PBMCs. We observed a high prevalence of undetectable CD34+/KDR+ (40%) and CD34+/CD133+/KDR+ EPCs (44%). Men with undetectable EPCs were more likely to have ≥2 CVD risk factors, lower interleukin-6 (IL-6), and higher sCD163 levels. In these older HIV+ men on suppressive ART, CD34+/KDR+ and CD34+/CD133+/KDR+ EPC levels were low and often undetectable. Undetectable EPC levels were associated with greater CVD risk factor burden, lower IL-6 (consistent with decreased EPC production stimulus), and higher sCD163 (consistent with monocyte activation and prior CVD associations) levels, suggesting a potential relationship between EPCs and atherosclerotic burden in this population.
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Affiliation(s)
- Sophie Seang
- Infectious Diseases Department, AP-HP Pitié-Salpêtrière Hospital, Paris, France
- Institut Pierre Louis d'Epidémiologie et de Santé Publique (IPLESP UMRS 1136), Sorbonne University, UPMC Univ Paris 06INSERM, Paris, France
| | - Theodoros Kelesidis
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Diana Huynh
- Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Sangeun Park
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Ardis A. Moe
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Judith S. Currier
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California
| | - Jordan E. Lake
- University of Texas Health Science Center at Houston, Houston, Texas
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The atheroma plaque secretome stimulates the mobilization of endothelial progenitor cells ex vivo. J Mol Cell Cardiol 2017; 105:12-23. [DOI: 10.1016/j.yjmcc.2017.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 02/13/2017] [Accepted: 02/14/2017] [Indexed: 01/28/2023]
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Sandhu K, Mamas M, Butler R. Endothelial progenitor cells: Exploring the pleiotropic effects of statins. World J Cardiol 2017; 9:1-13. [PMID: 28163831 PMCID: PMC5253189 DOI: 10.4330/wjc.v9.i1.1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/29/2016] [Accepted: 11/02/2016] [Indexed: 02/07/2023] Open
Abstract
Statins have become a cornerstone of risk modification for ischaemic heart disease patients. A number of studies have shown that they are effective and safe. However studies have observed an early benefit in terms of a reduction in recurrent infarct and or death after a myocardial infarction, prior to any significant change in lipid profile. Therefore, pleiotropic mechanisms, other than lowering lipid profile alone, must account for this effect. One such proposed pleiotropic mechanism is the ability of statins to augment both number and function of endothelial progenitor cells. The ability to augment repair and maintenance of a functioning endothelium may have profound beneficial effect on vascular repair and potentially a positive impact on clinical outcomes in patients with cardiovascular disease. The following literature review will discuss issues surrounding endothelial progenitor cell (EPC) identification, role in vascular repair, factors affecting EPC numbers, the role of statins in current medical practice and their effects on EPC number.
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Mekonnen G, Hayek SS, Mehta PK, Li Q, Mahar E, Mou L, Kenkre TS, Petersen JW, Azarbal B, Samuels B, Anderson RD, Sedlak T, Zaya M, Agarwal M, Haftbaradaran A, Minissian M, Handberg E, Pepine CJ, Cogle CR, Bairey Merz CN, Waller EK, Quyyumi AA. Circulating progenitor cells and coronary microvascular dysfunction: Results from the NHLBI-sponsored Women's Ischemia Syndrome Evaluation - Coronary Vascular Dysfunction Study (WISE-CVD). Atherosclerosis 2016; 253:111-117. [PMID: 27596135 PMCID: PMC9197325 DOI: 10.1016/j.atherosclerosis.2016.08.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 08/14/2016] [Accepted: 08/23/2016] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIMS Ischemia stimulates a reparative response resulting in mobilization of circulating progenitor cells (CPCs). We hypothesized that women with chronic myocardial ischemia from coronary microvascular disease (CMD) will mobilize CPCs. METHODS In 123 women with ischemic symptoms and signs but no obstructive coronary artery disease (CAD) enrolled in the Women's Ischemia Syndrome Evaluation - Coronary Vascular Dysfunction Study (WISE-CVD), we measured coronary flow reserve (CFR) in response to intracoronary adenosine. Peripheral blood CPCs were measured using flow cytometry for expression of CD34, CD133, CXCR4, and VEGFR2. RESULTS Subjects were 53 ± 11 years, BMI 30 ± 8; 44% hypertensive, 11% diabetic, 23% hyperlipidemic and 7% smokers. Lower CFR correlated inversely with higher levels of hematopoietic-enriched CD34+ (r = -0.23, p = 0.011), CD34+/CD133+ (r = -0.24, p = 0.008), and CD34+/CXCR4+ (r = -0.19, p = 0.036) cells. In multivariable regression analyses, after adjusting for traditional cardiovascular risk factors, lower CFR remained significantly associated with elevated levels of CD34+ (β -0.18, p = 0.042), CD34+/CD133+ (β -0.24, p = 0.036), and CD34+/CXCR4+ (β -0.22, p = 0.050) cells. We found no association between CFR and CD34+/VEGFR2+ cells. CONCLUSIONS In women with non-obstructive CAD, impaired CFR is associated with higher levels of CPCs, suggesting that chronic myocardial ischemia from CMD stimulates CPC mobilization. The functional significance of elevated CPCs in these subjects requires further investigation as a potential biomarker and treatment target.
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Affiliation(s)
| | - Salim S Hayek
- Emory University School of Medicine, Atlanta, GA, USA
| | - Puja K Mehta
- Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Los Angeles, CA, USA
| | - Qunna Li
- Emory University School of Medicine, Atlanta, GA, USA
| | | | - Liping Mou
- Emory University School of Medicine, Atlanta, GA, USA
| | | | | | - Babak Azarbal
- Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Los Angeles, CA, USA
| | - Bruce Samuels
- Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Los Angeles, CA, USA
| | | | | | - Melody Zaya
- Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Los Angeles, CA, USA
| | - Megha Agarwal
- Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Los Angeles, CA, USA
| | - Afsaneh Haftbaradaran
- Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Los Angeles, CA, USA
| | - Margo Minissian
- Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Los Angeles, CA, USA
| | | | | | | | - C Noel Bairey Merz
- Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Los Angeles, CA, USA
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Lake JE, Seang S, Kelesidis T, Currier JS, Yang OO. Telmisartan increases vascular reparative capacity in older HIV-infected adults: a pilot study. HIV CLINICAL TRIALS 2016; 17:225-232. [PMID: 27658740 DOI: 10.1080/15284336.2016.1234222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Endothelial progenitor cells (EPCs) are bone marrow-derived cells that contribute to vascular repair. EPCs may be reduced in HIV-infected (HIV+) persons, contributing to cardiovascular disease (CVD). Telmisartan is an angiotensin receptor blocker that increases EPCs in HIV-uninfected adults. OBJECTIVE To assess telmisartan's effects on EPC number and immunophenotype in older HIV + adults at risk for CVD. METHODS HIV + persons ≥50 years old with HIV-1 RNA < 50 copies/mL on suppressive antiretroviral therapy and ≥1 CVD risk factor participated in a prospective, open-label, pilot study of oral telmisartan 80 mg daily for 12 weeks. Using CD34 and CD133 as markers of early maturity and KDR as a marker of endothelial lineage commitment, EPCs were quantified via flow cytometry and defined as viable CD3-/CD33-/CD19-/glycophorin- cells of four immunophenotypes: CD133+/KDR+, CD34+/KDR+, CD34+/CD133+, or CD34+/KDR+/CD133+. The primary endpoint was a 12-week change in EPC subsets (NCT01578772). RESULTS Seventeen participants (88% men, median age 60 years and peripheral CD4+ T lymphocyte count 625 cells/mm3) enrolled and completed the study. After 6 and 12 weeks of telmisartan, frequencies of all EPC immunophenotypes were higher than baseline (all p < 0.10 except week 12 CD133+/KDR+ EPC, p = 0.13). Participants with lower baseline EPC levels had the largest gains. Additionally, the percentage of CD34+ cells with endothelial commitment (KDR+) increased. CONCLUSIONS Our data suggest that telmisartan use is associated with an increase in circulating EPCs in older HIV + individuals with CVD risk factors. Further controlled studies are needed to assess whether EPC increases translate to a reduction in CVD risk in this population.
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Affiliation(s)
- Jordan E Lake
- a Division of Infectious Diseases, Department of Medicine , University of California , Los Angeles , CA , USA
| | - Sophie Seang
- a Division of Infectious Diseases, Department of Medicine , University of California , Los Angeles , CA , USA
| | - Theodoros Kelesidis
- a Division of Infectious Diseases, Department of Medicine , University of California , Los Angeles , CA , USA
| | - Judith S Currier
- a Division of Infectious Diseases, Department of Medicine , University of California , Los Angeles , CA , USA
| | - Otto O Yang
- a Division of Infectious Diseases, Department of Medicine , University of California , Los Angeles , CA , USA.,b Department of Microbiology, Immunology, and Molecular Genetics , University of California , Los Angeles , CA , USA.,c AIDS Healthcare Foundation , Los Angeles , CA , USA
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Castejon R, Castañeda A, Sollet A, Mellor-Pita S, Tutor-Ureta P, Jimenez-Ortiz C, Yebra-Bango M. Short-term atorvastatin therapy improves arterial stiffness of middle-aged systemic lupus erythematosus patients with pathological pulse wave velocity. Lupus 2016; 26:355-364. [PMID: 27510602 DOI: 10.1177/0961203316662719] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives Statins have been proposed as a potential treatment for systemic lupus erythematosus (SLE) due to their immunomodulatory properties, their role restoring endothelial function and preventing atherosclerosis. We evaluate the effect of a short period treatment with a low dose of atorvastatin and its withdrawal on early stage subclinical atherosclerosis. Methods Thirty-seven SLE females received 20 mg/day atorvastatin during eight weeks. At baseline, at the end of treatment and six months after atorvastatin withdrawal, disease activity, subclinical atherosclerosis -assessed by measuring carotid-femoral pulse wave velocity (PWV) - and quantification of circulating endothelial progenitor cells (EPC) - as a surrogate biological marker of subclinical atherosclerosis - were carried out. Results The group of SLE patients with baseline pathological arterial stiffness showed a significant decrease of PWV after atorvastatin therapy (8.43 ± 1.45 m/s vs 7.42 ± 1.06 m/s; p = 0.002) that is maintained six months after treatment finished. Only patients of the middle-aged group showed a nearly significant decrease in the PWV measured along the study (7.16 ± 1.23 m/s vs 6.76 ± 0.82 m/s; p = 0.05). Atorvastatin induced a significant decrease in the circulating EPC percentage (0.65 ± 0.67 vs 0.40 ± 0.31; p = 0.023) as well as a downward trend of disease activity that it is observed by a decrease in SLE disease activity index simultaneously with an increase in C3 complement and significant decrease in serum concentration of vascular endothelial grow factor (VEGF) and sVCAM-1. Conclusions Short-term atorvastatin therapy reduces arterial stiffness of SLE patients with baseline pathological PWV, who are mainly in the group of middle-aged patients. Further studies are needed to determine whether these patients would benefit from statin therapy in preventing cardiovascular events.
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Affiliation(s)
- R Castejon
- 1 Systemic Autoimmune Diseases Unit, Internal Medicine Service, IDIPHIM (University Hospital Puerta de Hierro Research Institute), Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - A Castañeda
- 1 Systemic Autoimmune Diseases Unit, Internal Medicine Service, IDIPHIM (University Hospital Puerta de Hierro Research Institute), Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - A Sollet
- 1 Systemic Autoimmune Diseases Unit, Internal Medicine Service, IDIPHIM (University Hospital Puerta de Hierro Research Institute), Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - S Mellor-Pita
- 1 Systemic Autoimmune Diseases Unit, Internal Medicine Service, IDIPHIM (University Hospital Puerta de Hierro Research Institute), Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - P Tutor-Ureta
- 1 Systemic Autoimmune Diseases Unit, Internal Medicine Service, IDIPHIM (University Hospital Puerta de Hierro Research Institute), Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - C Jimenez-Ortiz
- 2 Neurology Service, IDIPHIM (University Hospital Puerta de Hierro Research Institute), Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - M Yebra-Bango
- 1 Systemic Autoimmune Diseases Unit, Internal Medicine Service, IDIPHIM (University Hospital Puerta de Hierro Research Institute), Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
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20
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Saboo A, Rathnayake A, Vangaveti VN, Malabu UH. Wound healing effects of dipeptidyl peptidase-4 inhibitors: An emerging concept in management of diabetic foot ulcer-A review. Diabetes Metab Syndr 2016; 10:113-119. [PMID: 25990796 DOI: 10.1016/j.dsx.2015.04.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVE Dipeptidyl peptidase-4 (DPP-4) inhibitors have a well-known effect on glycaemic control in patients with diabetes but little is known on their wound healing role in this group of population. This paper reviews the effects of DPP-4 inhibitors on wound healing of diabetic foot ulcers. METHODS Published data on effects and mechanism of DDP-4 inhibitors on wound healing were derived from Medline, PubMed and Google Scholar search of English language literature from 1994 to 2014 using the key words such as "DPP-4 inhibitors", "endothelial healing" "diabetes" and "chronic ulcers". RESULTS DPP-4 inhibitors show a potential benefit in processes of wound healing in diabetic chronic foot ulcers. The enzyme inhibitors promote recruitment of endothelial progenitor cells and allow the final scaffolding of wounds. Furthermore DPP-4 inhibitors augment angiogenesis and have widespread effects on optimising the immune response to persistent hypoxia in chronic diabetes wounds. CONCLUSION DPP-4 inhibitors show promise in the local wound healing of diabetic foot ulcers in addition to its already established glycaemic control. In the light of high rate of amputations due to non-healing ulcers with profound psychological and economical liability, more investigations on the usefulness of DPP-4 inhibitors in the high risk diabetes population are needed.
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Affiliation(s)
- Apoorva Saboo
- Translational Research in Endocrinology and Diabetes [TREAD], College of Medicine and Dentistry, James Cook University, The Townsville Hospital, 100 Angus Smith Drive, Douglas 4814, QLD, Australia
| | - Ayeshmanthe Rathnayake
- Translational Research in Endocrinology and Diabetes [TREAD], College of Medicine and Dentistry, James Cook University, The Townsville Hospital, 100 Angus Smith Drive, Douglas 4814, QLD, Australia
| | - Venkat N Vangaveti
- Translational Research in Endocrinology and Diabetes [TREAD], College of Medicine and Dentistry, James Cook University, The Townsville Hospital, 100 Angus Smith Drive, Douglas 4814, QLD, Australia
| | - Usman H Malabu
- Translational Research in Endocrinology and Diabetes [TREAD], College of Medicine and Dentistry, James Cook University, The Townsville Hospital, 100 Angus Smith Drive, Douglas 4814, QLD, Australia.
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21
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Liu JH, Chen Y, Zhen Z, Yeung CK, Chan J, Chan HH, Tse HF, Yiu KH. Relation between endothelial progenitor cells and arterial stiffness in patients with psoriasis. J Dermatol 2015; 43:888-93. [PMID: 26704131 DOI: 10.1111/1346-8138.13235] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 10/21/2015] [Indexed: 11/30/2022]
Abstract
Patients with psoriasis are prone to premature atherosclerosis. We hypothesize that depletion of circulating endothelial progenitor cells (EPC) is related to patients with psoriasis and can contribute to the development of atherosclerosis. Thirty-five plaque-type psoriasis patients (41.9 ± 5.5 years, 30 men) and 20 age- and sex-matched controls were studied. Four subpopulations of EPC, namely, CD34(+) EPC, CD133(+) EPC, CD34(+) /kinase insert domain-containing receptor (KDR)(+) EPC and CD133(+) /KDR(+) EPC were measured by flow cytometry. Arterial stiffness in psoriasis patients was assessed by heart to ankle pulse wave velocity (haPWV), augmentation index (AI) and carotid intima media thickness (IMT). Patients with psoriasis had a lower level of CD34(+) EPC (7.85 ± 2.49% vs 6.26 ± 2.13%, P = 0.02) compared with healthy controls. In patients with psoriasis, level of CD34(+) EPC was negatively related with haPWV (r = -0.43 P = 0.01) and Psoriasis Area and Severity Index (r = -0.39 P = 0.02). Multivariate regression analysis further demonstrated that haPWV was independently associated with level of CD34(+) EPC. Each percentage decrease in CD34(+) EPC accounted for an increase in haPWV of +0.02 m/s. The result demonstrated that patients with psoriasis had reduced CD34(+) EPC compared with controls. Importantly, CD34(+) EPC was independently related with haPWV in these patients. This finding suggests that EPC reduction is associated with the development of arterial stiffness in patients with psoriasis.
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Affiliation(s)
- Ju-Hua Liu
- Division of Cardiology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.,Department of Medicine, Meishan People's Hospital, Meishan, China
| | - Yan Chen
- Division of Cardiology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Zhe Zhen
- Division of Cardiology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Chi-Keung Yeung
- Division of Dermatology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Johnny Chan
- Division of Dermatology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Henry H Chan
- Division of Dermatology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Hung-Fat Tse
- Division of Cardiology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.,Research Centre of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Kai-Hang Yiu
- Division of Cardiology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.,Research Centre of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.,Division of Cardiology, Department of Medicine, The University of Hong Kong, ShenZhen Hospital, ShenZhen, China
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22
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Castejon R, Jimenez-Ortiz C, Rosado S, Tutor-Ureta P, Mellor-Pita S, Yebra-Bango M. Metabolic syndrome is associated with decreased circulating endothelial progenitor cells and increased arterial stiffness in systemic lupus erythematosus. Lupus 2015; 25:129-36. [PMID: 26359174 DOI: 10.1177/0961203315603138] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 07/29/2015] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Metabolic syndrome (MetS) is highly prevalent in patients with systemic lupus erythematosus (SLE) and it has been associated with increased cardiovascular risk. We examined the contribution of MetS to inflammatory markers, arterial stiffness and circulating endothelial progenitor cells (EPCs) as surrogates of subclinical atherosclerosis. METHODS Cardiovascular risk factors, SLE-specific factors and peripheral blood EPCs were assessed in 50 female SLE patients. MetS was defined according to the National Cholesterol Education Program Adult Treatment Panel III. Simultaneously, atherosclerosis was assessed by measuring the carotid-femoral pulse wave velocity (PWV) by doppler velocimetry. RESULTS Beyond the factors included in the definition, SLE patients with MetS have a significantly higher serum level of uric acid (6.88 ± 2.20 vs 4.45 ± 1.17, p < 0.001) and some inflammatory biomarkers such as homocysteine, IL-8, sICAM-1 or complement molecules. The presence of MetS in our patients was closely linked with a significantly increased patient organ damage score (3.20 ± 1.97 vs 1.60 ± 1.67, p = 0.008), a decreased percentage of circulating EPCs (0.53 ± 0.24 vs 0.85 ± 0.57, p = 0.007) and an increased arterial stiffness (9.89 ± 2.40 vs 7.13 ± 1.51, p < 0.001). CONCLUSIONS MetS may contribute to the development of atherosclerosis by significantly increasing inflammation levels and arterial stiffness and decreasing circulating EPCs. This finding would justify close monitoring of these patients.
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Affiliation(s)
- R Castejon
- Systemic Autoimmune Diseases Unit, Internal Medicine Service, University Hospital Puerta de Hierro Research Institute, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - C Jimenez-Ortiz
- Neurology Service, University Hospital Puerta de Hierro Research Institute, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - S Rosado
- Systemic Autoimmune Diseases Unit, Internal Medicine Service, University Hospital Puerta de Hierro Research Institute, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - P Tutor-Ureta
- Systemic Autoimmune Diseases Unit, Internal Medicine Service, University Hospital Puerta de Hierro Research Institute, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - S Mellor-Pita
- Systemic Autoimmune Diseases Unit, Internal Medicine Service, University Hospital Puerta de Hierro Research Institute, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - M Yebra-Bango
- Systemic Autoimmune Diseases Unit, Internal Medicine Service, University Hospital Puerta de Hierro Research Institute, Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
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23
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Endothelial progenitor cells in tumor angiogenesis: another brick in the wall. Stem Cells Int 2015; 2015:832649. [PMID: 26000021 PMCID: PMC4427119 DOI: 10.1155/2015/832649] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 03/25/2015] [Accepted: 03/27/2015] [Indexed: 12/14/2022] Open
Abstract
Until 15 years ago, vasculogenesis, the formation of new blood vessels from undifferentiated cells, was thought to occur only during embryonic development. The discovery of circulating cells that are able to promote vascular regeneration and repair—the so-called endothelial progenitor cells (EPCs)—changed that, and EPCs have since been studied extensively. It is already known that EPCs include many subtypes of cells that play a variety of roles in promoting vascular growth. Some EPCs are destined to differentiate into endothelial cells, whereas others are capable of promoting and sustaining angiogenesis through paracrine mechanisms. Vasculogenesis and angiogenesis might constitute complementary mechanisms for postnatal neovascularization, and EPCs could be at the core of this process. Although the formation of new blood vessels from preexisting vasculature plays a beneficial role in many physiological processes, such as wound healing, it also contributes to tumor growth and metastasis. However, many aspects of the role played by EPCs in tumor angiogenesis remain unclear. This review aims to address the main aspects of EPCs differentiation and certain characteristics of their main function, especially in tumor angiogenesis, as well as the potential clinical applications.
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Zan T, Li H, Du Z, Gu B, Liu K, Li Q. Enhanced endothelial progenitor cell mobilization and function through direct manipulation of hypoxia inducible factor-1α. Cell Biochem Funct 2015; 33:143-9. [PMID: 25801228 DOI: 10.1002/cbf.3091] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 12/17/2014] [Accepted: 01/05/2015] [Indexed: 12/19/2022]
Affiliation(s)
- Tao Zan
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Hua Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Zijing Du
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Bin Gu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Kai Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
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25
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Qin T, Sun YY, Bai WW, Wang B, Xing YF, Liu Y, Yang RX, Zhao YX, Li JM. Period2 deficiency blunts hypoxia-induced mobilization and function of endothelial progenitor cells. PLoS One 2014; 9:e108806. [PMID: 25268972 PMCID: PMC4182576 DOI: 10.1371/journal.pone.0108806] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 08/25/2014] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND In the clinic, variations in circadian rhythm are evident in patients with cardiovascular disease, and the risk of cardiovascular events increases when rhythms are disrupted. In this study, we focused on the role of the circadian gene period2 (per2) in mobilization and function of endothelial progenitor cells (EPCs) in vitro and in vivo after myocardial infarction (MI) in mice. METHODS AND RESULTS MI was produced by surgical ligation of the left anterior descending coronary artery in mice with and without per2 deficiency. Trans-thoracic echocardiography was used to evaluate cardiac function in mice. Per2-/- mice with MI showed decreased cardiac function and increased infarct size. The number of CD34+ cells and capillary density were decreased in the myocardium of per2-/- mice on immunohistochemistry. Flow cytometry revealed decreased number of circulating EPCs in per2-/- mice after MI. In vitro, per2-/- EPCs showed decreased migration and tube formation capacity under hypoxia. Western blot analysis revealed inhibited activation of extracellular signal-regulated kinase and Akt signaling in the bone marrow of per2-/- mice and inhibited PI3K/Akt expression in per2-/- EPCs under hypoxia. CONCLUSIONS Per2 modulates EPC mobilization and function after MI, which is important to recovery after MI in mice.
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Affiliation(s)
- Tao Qin
- Department of Emergency Surgery, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Yuan-Yuan Sun
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Shandong University, Jinan, Shandong, China
- Department of Traditional Chinese Medicine, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Wen-Wu Bai
- Department of Traditional Chinese Medicine, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Bo Wang
- Department of Traditional Chinese Medicine, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Yi-Fan Xing
- Department of Traditional Chinese Medicine, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Yan Liu
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Shandong University, Jinan, Shandong, China
| | - Rui-Xue Yang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Shandong University, Jinan, Shandong, China
| | - Yu-Xia Zhao
- Department of Traditional Chinese Medicine, Qilu Hospital, Shandong University, Jinan, Shandong, China
- * E-mail: (YXZ); (JML)
| | - Jian-Min Li
- Department of Orthopedics, Qilu Hospital, Shandong University, Jinan, Shandong, China
- * E-mail: (YXZ); (JML)
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Marketou ME, Kalyva A, Parthenakis FI, Pontikoglou C, Maragkoudakis S, Kontaraki JE, Chlouverakis G, Zacharis EA, Patrianakos A, Papadaki HA, Vardas PE. Circulating endothelial progenitor cells in hypertensive patients with increased arterial stiffness. J Clin Hypertens (Greenwich) 2014; 16:295-300. [PMID: 24641802 DOI: 10.1111/jch.12287] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/13/2014] [Accepted: 01/16/2014] [Indexed: 11/29/2022]
Abstract
The potential association between arterial stiffening and circulating endothelial progenitor cells (EPCs) in patients with essential hypertension was investigated. Pulse wave velocity (PWV) was used to evaluate arterial stiffness in 24 patients with essential hypertension and 19 healthy controls. Blood samples were taken and immunostained with antibodies against the cell surface markers CD34, CD45, and CD133. Using flow cytometry, EPCs as a population of CD45-/CD34+/CD133+ cells were measured. Hypertensive patients were not found to have higher levels of circulating CD45-/CD34+/CD133+ compared with the control group (0.0026%±0.0031% vs 0.0023%±0.0023%, respectively; P=.7). Correlation analysis revealed a strong association between the number of CD45-/CD34+/CD133+ cells and PWV (r=0.58, P<.001), indicating that hypertensive patients with increased PWV have a greater percentage of CD45-/CD34+/CD133+ cells. Data showed a correlation between the number of circulating CD45-/CD34+/CD133+ cells and arterial stiffness, suggesting that those cells might have a role in arterial remodeling.
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Affiliation(s)
- Maria E Marketou
- Department of Cardiology, Heraklion University Hospital, Crete, Greece
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Sun YY, Bai WW, Wang B, Lu XT, Xing YF, Cheng W, Liu XQ, Zhao YX. Period 2 is essential to maintain early endothelial progenitor cell function in vitro and angiogenesis after myocardial infarction in mice. J Cell Mol Med 2014; 18:907-18. [PMID: 24621388 PMCID: PMC4119396 DOI: 10.1111/jcmm.12241] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 01/08/2014] [Indexed: 01/02/2023] Open
Abstract
Cellular therapeutic neovascularization has been successfully performed in clinical trials for patients with ischaemia diseases. Despite the vast knowledge of cardiovascular disease and circadian biology, the role of the circadian clock in regulating angiogenesis in myocardial infarction (MI) remains poorly understood. In this study, we aimed to investigate the role and underlying mechanisms of Period 2 (Per2) in endothelial progenitor cell (EPC) function. Flow cytometry revealed lower circulating EPC proportion in per2−/− than in wild-type (WT) mice. PER2 was abundantly expressed in early EPCs in mice. In vitro, EPCs from per2−/− mice showed impaired proliferation, migration, tube formation and adhesion. Western blot analysis demonstrated inhibited PI3k/Akt/FoxO signalling and reduced C-X-C chemokine receptor type 4 (CXCR4) protein level in EPCs of per2−/− mice. The impaired proliferation was blocked by activated PI3K/Akt/FoxO signalling. Direct interaction of CXCR4 and PER2 was detected in WT EPCs. To further study the effect of per2 on in vivo EPC survival and angiogenesis, we injected saline or DiI-labelled WT or per2−/− EPC intramyocardially into mice with induced MI. Per2−/− reduced the retention of transplanted EPCs in the myocardium, which was associated with significantly reduced DiI expression in the myocardium of MI mice. Decreased angiogenesis in the myocardium of per2−/− EPC-treated mice coincided with decreased LV function and increased infarct size in the myocardium. Per2 may be a key factor in maintaining EPC function in vitro and in therapeutic angiogenesis in vivo.
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Affiliation(s)
- Yuan-Yuan Sun
- Key Laboratory of Cardiovascular Remodeling and Function Research, Qilu Hospital, Shandong University, Jinan, Shandong, China; Department of Traditional Chinese Medicine, Qilu Hospital, Shandong University, Jinan, Shandong, China
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Mohandas R, Sautina L, Li S, Wen X, Huo T, Handberg E, Chi YY, Merz CNB, Pepine CJ, Segal MS. Number and function of bone-marrow derived angiogenic cells and coronary flow reserve in women without obstructive coronary artery disease: a substudy of the NHLBI-sponsored Women's Ischemia Syndrome Evaluation (WISE). PLoS One 2013; 8:e81595. [PMID: 24312563 PMCID: PMC3846855 DOI: 10.1371/journal.pone.0081595] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Accepted: 10/23/2013] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND In women with ischemia and no obstructive coronary artery disease, the Women's Ischemic Syndrome Evaluation (WISE) observed that microvascular coronary dysfunction (MCD) is the best independent predictor of adverse cardiovascular events. Since coronary microvascular tone is regulated in part by endothelium, we hypothesized that circulating endothelial cells (CEC), which reflect endothelial injury, and the number and function of bone-marrow derived angiogenic cells (BMDAC), which could help repair damaged endothelium, may serve as biomarkers for decreased coronary flow reserve (CFR) and MCD. METHODS We studied 32 women from the WISE cohort. CFR measurements in response to intracoronary adenosine were taken as an index of MCD. We enumerated BMDAC colonies and CEC in peripheral blood samples. BMDAC function was assessed by assay of migration of CD34+ cells toward SDF-1 and measurement of bioavailable nitric oxide (NO). These findings were compared with a healthy reference group and also entered into a multivariable model with CFR as the dependent variable. RESULTS Compared with a healthy reference group, women with MCD had lower numbers of BMDAC colonies [16 (0, 81) vs. 24 (14, 88); P = 0.01] and NO [936 (156, 1875) vs. 1168 (668, 1823); P = 0.02]. Multivariable regression analysis showed strong correlation of CFR to the combination of BMDAC colony count and CD34+ cell function (migration and NO) (R(2) = 0.45; P<0.05). CONCLUSIONS The BMDAC function and numbers of BMDAC colonies are decreased in symptomatic women with MCD and are independently associated with CFR. These circulating cells may provide mechanistic insights into MCD in women with ischemia.
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Affiliation(s)
- Rajesh Mohandas
- Division of Nephrology, Hypertension & Transplantation, University of Florida, Gainesville, Florida, United States of America
| | - Larysa Sautina
- Division of Nephrology, Hypertension & Transplantation, University of Florida, Gainesville, Florida, United States of America
| | - Shiyu Li
- Division of Nephrology, Hypertension & Transplantation, University of Florida, Gainesville, Florida, United States of America
| | - Xuerong Wen
- Division of Nephrology, Hypertension & Transplantation, University of Florida, Gainesville, Florida, United States of America
| | - Tianyao Huo
- Division of Cardiovascular Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Eileen Handberg
- Division of Cardiovascular Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Yueh-Yun Chi
- Department of Biostatistics, University of Florida, Gainesville, Florida, United States of America
| | - C. Noel Bairey Merz
- Barbra Streisand Women's Heart Center, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
| | - Carl J. Pepine
- Division of Cardiovascular Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Mark S. Segal
- Division of Nephrology, Hypertension & Transplantation, University of Florida, Gainesville, Florida, United States of America
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Castejon R, Jimenez-Ortiz C, Valero-Gonzalez S, Rosado S, Mellor S, Yebra-Bango M. Decreased circulating endothelial progenitor cells as an early risk factor of subclinical atherosclerosis in systemic lupus erythematosus. Rheumatology (Oxford) 2013; 53:631-8. [PMID: 24273021 DOI: 10.1093/rheumatology/ket367] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE Endothelial progenitor cells (EPCs) play an important role in vascular damage repair and it has been suggested that a decreased number of these cells is associated with increased subclinical atherosclerosis. Our study aim was to evaluate whether the number of circulating EPCs in patients with SLE is associated with subclinical atherosclerosis, the presence of cardiovascular (CV) risk factors and SLE-specific factors. METHODS Forty-six female SLE patients were included. At the time of each patient's appointment, CV risk factors, SLE-specific factors and EPCs were assessed in peripheral blood by flow cytometry. Simultaneously, atherosclerosis was assessed by measuring the carotid-femoral pulse wave velocity (PWV) by Doppler velocimetry, intima media thickness (IMT) and carotid plaque by B-mode US scanning. RESULTS Patients were classificated according to PWV following the reference values adjusted by age and blood pressure published by the European Society of Cardiology. Patients with pathological values of PWV showed a significant decrease of circulating EPC percentage compared with normal PWV patients. Decreased EPC counts were also associated with certain risk factors, including hypertension, tobacco use, impaired glucose metabolism, and metabolic syndrome, and correlate with high levels of high-sensitivity CRP (hsCRP) or fibrinogen. The presence of carotid plaque and IMT measurement were unrelated with EPC quantification. CONCLUSION Patients with a reduced percentage of EPCs showed pathological arterial stiffness and association with certain CV risk factors, suggesting that the measurement of circulating EPCs can be used as a biological marker to determine subclinical atherosclerosis in SLE.
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Affiliation(s)
- Raquel Castejon
- Servicio de Medicina Interna, Hospital Universitario Puerta de Hierro Majadahonda, Joaquin Rodrigo 2, 28222 Majadahonda, Madrid, Spain.
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Sun CK, Leu S, Sheu JJ, Tsai TH, Sung HC, Chen YL, Chung SY, Ko SF, Chang HW, Yip HK. Paradoxical impairment of angiogenesis, endothelial function and circulating number of endothelial progenitor cells in DPP4-deficient rat after critical limb ischemia. Stem Cell Res Ther 2013; 4:31. [PMID: 23517567 PMCID: PMC3706813 DOI: 10.1186/scrt181] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 02/04/2013] [Indexed: 12/29/2022] Open
Abstract
Introduction We hypothesized that dipeptidyl peptidase-IV (DPP4) may impair angiogenesis, endothelial function, and the circulating number of endothelial progenitor cells (EPC) in a model of critical limb ischemia (CLI) through ligating the left femoral artery using DPP4-deficient rats. Methods Adult male DPP4-deficient (DPP4D) rats (n = 18) were equally divided into CLI only (DPP4D-CLI) and CLI treated by granulocyte colony-stimulating factor (GCSF) (DPP4D-CLI-GCSF). For comparison, age-matched wild-type (WT) Fischer 344 rats (n = 18) were randomized into two groups receiving identical treatment compared to their DPP4-deficient counterparts and labeled as WT-CLI (n = 9) and WT-CLI-GCSF (n = 9), respectively. Results The circulating number of EPCs (CD31+, CD34+, CD133, C-kit+) was significantly lower in DPP4-deficient than in WT rats on post-CLI days 1 and 4 (all P < 0.01). The ratio of ischemia/normal blood flow was remarkably lower in DPP4D-CLI-GCSF rats than in WT-CLI-GCSF animals on post-CLI Day 14 (all P < 0.01). Protein expressions of pro-angiogenic factors (endothelial nitric oxide synthase (eNOS), CXCR4, SDF-1α, vascular endothelial growth factor (VEGF)) were remarkably higher in WT-CLI than in DPP4D-CLI rats, and higher in WT-CLI-GCSF than in DPP4D-CLI-GCSF animals (all P < 0.01). Moreover, the numbers of small vessel in the ischemic area were substantially higher in WT-CLI-GCSF than in DPP4D-CLI-GCSF rats (P < 0.001). Furthermore, vasorelaxation and nitric oxide production of the normal femoral artery were significantly reduced in DPP4-deficient than in WT Fischer rats (all P < 0.01). Conclusions Contrary to our hypothesis, DPP4-deficient rats were inferior to age-matched WT Fischer rats in terms of angiogenesis, endothelial function, circulating EPC number and response to GCSF, suggesting a positive role of DPP4 in maintaining vascular function and tissue perfusion in this experimental setting.
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Alessio AM, Beltrame MP, Nascimento MCF, Vicente CP, de Godoy JAP, Silva JCRS, Bittar LF, Lorand-Metze I, de Paula EV, Annichino-Bizzacchi JM. Circulating progenitor and mature endothelial cells in deep vein thrombosis. Int J Med Sci 2013; 10:1746-54. [PMID: 24155660 PMCID: PMC3805926 DOI: 10.7150/ijms.6887] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 10/07/2013] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Mature circulating endothelial cells (CEC) and circulating endothelial progenitor cells (EPC) have been described in several conditions associated with endothelial injury. Their role in deep vein thrombosis (DVT) has not been previously evaluated. PATIENTS AND METHODS In this pilot study we evaluated the time course of CEC and EPC release after vena cava experimental DVT in mice, using the FeCl3 model. We also evaluated their presence in patients with DVT at different phases of the disease (acute and chronic phase). CEC and EPC were evaluated by Flow Cytometry. RESULTS In mice, both CEC and EPC were increased 24 hours after DVT induction, peaking 48 hours thereafter. After 72 hours, CEC counts decreased sharply, whereas EPC counts decreased less substantially. In DVT patients we observed a significant increase in CEC counts immediately after DVT compared to healthy individuals. Patients with chronic disease also presented a significant elevation of these cell count. In a subgroup of patients for whom serial samples were available, CEC counts decreased significantly after 9-15 months of the acute event. CONCLUSIONS Our results suggest the participation of these cells in the reparative processes that follows DVT, both at immediate and late time-points. The different kinetics of CEC and EPC release in experimental DVT suggests a heterogeneous role for these cells in the reparative events after DVT.
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Affiliation(s)
- Aline M Alessio
- 1. Hematology and Hemotherapy Center, University of Campinas, Campinas-SP, Brazil
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Worse clinical outcomes in acute myocardial infarction patients with type 2 diabetes mellitus: relevance to impaired endothelial progenitor cells mobilization. PLoS One 2012; 7:e50739. [PMID: 23226370 PMCID: PMC3511359 DOI: 10.1371/journal.pone.0050739] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Accepted: 10/24/2012] [Indexed: 02/02/2023] Open
Abstract
Background Although the clinical outcome of acute myocardial infarction (AMI) in patients with type 2 diabetes mellitus (T2DM) is well established to be worse than for non-diabetic patients, the reasons for this remain unclear. We hypothesized that this may be related to impairment of bone marrow-derived endothelial progenitor cells (EPCs) mobilization. Methodology/Principal Findings We observed short term bone marrow EPCs mobilization and long term clinical outcomes in 62 AMI patients with or without T2DM and investigated EPCs levels as well as bone marrow pathway changes in a rat model of diabetes after AMI. Patients with T2DM exhibited a delay (peak time diabetics vs. non-diabetics: day 7 vs. day 5) and a decrease in EPCs mobilization (diabetics vs. non-diabetics: 285±56/106 mononuclear cells (MNCs) vs. 431±88/106 MNCs, p<0.05) within one month after AMI. Plasma levels of VEGF and SDF-1α as well as of hsCRP were higher in T2DM patients. Over a mean of 2.26 years follow-up, T2DM patients exhibited a pronounced decrease in LVEF as well as an increase in clinical events. Glucose (HR 2.01, 95% CI 1.42–2.85, p = 0.008), first day EPC (HR 0.974, 95% CI 0.952–0.997, p = 0.02) and seven day EPCs (HR 0.966, 95% CI 0.945–0.988, p = 0.003) were independent prognostic variables for cardiovascular mortality. In a diabetic rat model of AMI, decreased circulating EPCs was accompanied by lower expression of phospho-Akt, phospho-eNOS, HIF, MMP-9 and MMP-9 activity in the bone marrow as well as impaired cardiac function, angiogenesis and increased left ventricle remodeling. Conclusions/Significance Bone marrow EPCs mobilization is delayed and reduced in diabetes, with impaired HIF/p-Akt/p-eNOS/MMP-9 signaling. This is likely to contribute to the deterioration in cardiac function and worsened clinical outcome seen in patients with T2DM.
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Yorgun H, Tokgözoğlu L, Canpolat U, Gürses KM, Bozdağ G, Yapıcı Z, Sahiner L, Kaya EB, Kabakçı G, Oto A, Tuncer M, Aytemir K. The cardiovascular effects of premature ovarian failure. Int J Cardiol 2012; 168:506-10. [PMID: 23073277 DOI: 10.1016/j.ijcard.2012.09.197] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 09/26/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND Previous studies have shown that cardiovascular risk is increased in premature ovarian failure (POF). To determine the effects of POF on different parameters of cardiovascular health, we investigated the relationship between POF and circulating endothelial progenitor cells (EPC), endothelial function, carotid intima media thickness (CIMT) and left ventricular diastolic function. METHODS We compared 23 female POF patients (mean age; 37.8 ± 10.8 years) with 20 gender and age-matched healthy controls. Circulating CD133(+)/34(+) and CD34(+)/KDR(+) EPCs were determined by using flow-cytometry. Ultrasound assessment of endothelial function by brachial artery flow-mediated dilatation (FMD) and CIMT was made. Left ventricular systolic and diastolic function was assessed by standard 2D and M-mode echocardiography and tissue Doppler velocities. RESULTS Brachial artery FMD was significantly impaired in patients with POF compared with CG (6.3 ± 1.9% vs 10.4 ± 3.7%, p<0.05). Furthermore, circulating EPCs were lower among patients with POF compared to controls for CD133(+)/34(+) and CD34(+)/KDR(+) cells (p<0.05). There was a significant correlation between serum estradiol levels and EPC number (CD 133+/34+) (r=0.329, p<0.05). POF patients had increased CIMT compared to controls (0.67 ± 0.17 vs 0.43 ± 0.10, p<0.05). When diastolic functions were assessed, patients with POF had lower Epeak, Apeak and mitral CP and higher DT and IVRT (p<0.05, respectively). CONCLUSION Our findings indicate that endothelial function as well as circulating EPCs, CIMT and diastolic function are significantly affected in young women with POF which may have an adverse long-term effect on cardiovascular prognosis.
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Affiliation(s)
- Hikmet Yorgun
- Department of Cardiology, Hacettepe University, Ankara, Turkey
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Chen YT, Cheng BC, Ko SF, Chen CH, Tsai TH, Leu S, Chang HW, Chung SY, Chua S, Yeh KH, Chen YL, Yip HK. Value and level of circulating endothelial progenitor cells, angiogenesis factors and mononuclear cell apoptosis in patients with chronic kidney disease. Clin Exp Nephrol 2012; 17:83-91. [PMID: 22814956 DOI: 10.1007/s10157-012-0664-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 06/19/2012] [Indexed: 02/02/2023]
Abstract
BACKGROUND Chronic renal failure on dialysis can reduce the number of circulating endothelial progenitor cells (EPCs), but this biomarker has not been fully investigated in patients with chronic kidney disease (CKD). A link between CKD and increased mononuclear cell apoptosis (MCA) in circulation has been reported but the effect of vascular endothelial growth factor (VEGF) and stromal cell-derived factor (SDF)-1α, two angiogenesis factors, on circulating EPC levels in CKD has not been clarified. This study examined the relationships between the numbers of circulating EPCs and the severity of CKD, degree of MCA and serum levels of VEGF and SDF-1α in CKD patients. METHODS The numbers of circulating EPCs (CD31/CD34+, CD62E/CD34+, KDR/CD34+, CXCR4/CD34+) were measured in 166 patients with varying degrees of CKD under regular treatment at an outpatient department and in 30 volunteer control subjects. RESULTS CKD patients had significantly lower numbers of EPCs (p < 0.007), higher MCA in circulation and higher serum levels of VEGF and SDF-1 compared with the control subjects (all p < 0.001). Compared with patients with early CKD (stages I-III), patients with late CKD [stage IV-V or end-stage renal disease (ESRD)] had significantly lower numbers of EPCs (CXCR4/CD34+), higher MCA, and elevated serum levels of VEGF and SDF-1α (all p < 0.01). Serum VEGF level but not MCA or SDF-1α was strongly correlated with increased numbers of circulating EPCs. Multivariate analysis showed that ESRD along with lower serum albumin was independently predictive of lower numbers of circulating EPCs (p < 0.04). CONCLUSION Circulating EPCs were markedly reduced in CKD patients. ESRD was strongly and independently predictive of decreased numbers of circulating EPCs.
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Affiliation(s)
- Yen-Ta Chen
- Division of Urology, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan, ROC
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Chen CH, Chang LT, Tung WC, Chen YL, Chang CL, Leu S, Sun CK, Tsai TH, Tsai IT, Chang HW, Yip HK. Levels and values of circulating endothelial progenitor cells, soluble angiogenic factors, and mononuclear cell apoptosis in liver cirrhosis patients. J Biomed Sci 2012; 19:66. [PMID: 22809449 PMCID: PMC3414826 DOI: 10.1186/1423-0127-19-66] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 07/18/2012] [Indexed: 02/07/2023] Open
Abstract
Background The roles of circulating endothelial progenitor cell (EPC) and mononuclear cell apoptosis (MCA) in liver cirrhosis (LC) patients are unknown. Moreover, vascular endothelial growth factor (VEGF) and stromal cell-derived factor (SDF)-1α are powerful endogenous substances enhancing EPC migration into circulation. We assessed the level and function of EPCs [CD31/CD34 (E1), KDR/CD34 (E2), CXCR4/CD34 (E3)], levels of MCA, VEGF and SDF-1α in circulation of LC patients. Methods Blood sample was prospectively collected once for assessing EPC level and function, MCA, and plasma levels of VEGF and SDF-1α using flow cytometry and enzyme-linked immunosorbent assay (ELISA), respectively, in 78 LC patients and 25 age- and gender-matched healthy controls. Results Number of EPCs (E1, E2, E3) was lower (all p < 0.0001), whereas SDF-1α level and MCA were higher (p < 0.001) in study patients compared with healthy controls. Number of EPCs (E2, E3) was higher but MCA was lower (all p < 0.05) in Child's class A compared with Child's class B and C patients, although no difference in VEGF and SDF-1α levels were noted among these patients. Chronic hepatitis B and esophageal varices bleeding were independently, whereas chronic hepatitis C, elevated aspartate aminotransferase (AST), and decompensated LC were inversely and independently correlated with circulating EPC level (all p < 0.03). Additionally, angiogenesis and transwell migratory ability of EPCs were reduced in LC patients than in controls (all p < 0.001). Conclusion The results of this study demonstrated that level, angiogenic capacity, and function of circulating EPCs were significantly reduced, whereas plasma levels of SDF-1α and circulating MCA were substantially enhanced in cirrhotic patients.
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Affiliation(s)
- Chih-Hung Chen
- Divisions of General Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Tsai TH, Chai HT, Sun CK, Yen CH, Leu S, Chen YL, Chung SY, Ko SF, Chang HW, Wu CJ, Yip HK. Obesity suppresses circulating level and function of endothelial progenitor cells and heart function. J Transl Med 2012; 10:137. [PMID: 22747715 PMCID: PMC3543390 DOI: 10.1186/1479-5876-10-137] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Accepted: 06/07/2012] [Indexed: 11/25/2022] Open
Abstract
Background and aim This study tested the hypothesis that obesity suppresses circulating number as well as the function of endothelial progenitor cells (EPCs) and left ventricular ejection fraction (LVEF). Methods High fat diet (45 Kcal% fat) was given to 8-week-old C57BL/6 J mice (n = 8) for 20 weeks to induce obesity (group 1). Another age-matched group (n = 8) were fed with control diet for 20 weeks as controls (group 2). The animals were sacrificed at the end of 20 weeks after obesity induction. Results By the end of study period, the heart weight, body weight, abdominal fat weight, serum levels of total cholesterol and fasting blood sugar were remarkably higher in group 1 than in group 2 (all p<0.01). The circulating level of EPCs (C-kit/CD31, Sca-1/KDR, CXCR4/CD34) was significantly lower in group 1 than in group 2 (p<0.03) at 18 h after critical limb ischemia induction. The angiogenesis and migratory ability of bone marrow-derived EPCs was remarkably impaired in group 1 compared to that in group 2 (all p<0.01). The repair ability of aortic endothelium damage by lipopolysaccharide was notably attenuated in group 1 compared with that in group 2 (p<0.01). Collagen deposition (Sirius red staining) and fibrotic area (Masson's Trichrome staining) in LV myocardium were notably increased in group 1 compared with group 2 (p<0.001). LVEF was notably lower, whereas LV end-diastolic and end-systolic dimensions were remarkably higher in group 1 than in group 2 (all p<0.001). Conclusions Obesity diminished circulating EPC level, impaired the recovery of damaged endothelium, suppressed EPC angiogenesis ability and LVEF, and increased LV remodeling.
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Affiliation(s)
- Tzu-Hsien Tsai
- Division of Cardiology, Department of Internal Medicine; Chang Gung Memorial Hospital- Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Kim S, Kim NH, Kim YK, Yoo JH, Shin SN, Ko JS, Kim YK, Rhee SJ, Yun KH, Lee EM, Yoo NJ, Oh SK, Jeong JW. The Number of Endothelial Progenitor Cells is Decreased in Patients With Non-Dipper Hypertension. Korean Circ J 2012; 42:329-34. [PMID: 22701498 PMCID: PMC3369964 DOI: 10.4070/kcj.2012.42.5.329] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 10/01/2011] [Accepted: 11/16/2011] [Indexed: 11/30/2022] Open
Abstract
Background and Objectives Circulating endothelial progenitor cells (EPCs) play a key role in the maintenance of endothelial homeostasis and promote vascular repair. A reduced number of EPCs and the functional activity have been associated with several cardiovascular risk factors. However, the relationship between the number of EPCs and circadian rhythm of the blood pressure (BP) remains unclear. The purpose of the present study was to evaluate the relationship between the circadian rhythm of the BP and EPCs in patients with essential hypertension. Subjects and Methods A total of 45 patients with essential hypertension who were newly identified by outpatient BP measurements, underwent 24-hour ambulatory BP monitoring. Among the 45 patients with essential hypertension, 20 were classified as dippers (12 men and 8 women; mean age 48±14 years) and 25 as non-dippers (14 men and 11 women; mean age 52±18 years). The EPC count was isolated from the peripheral bloodstream and quantified by flow cytometry. Results The baseline clinical characteristics were similar between the dipper and non-dipper hypertensive patients. The circulating EPCs were statistically reduced in the non-dipper patients as compared to the dippers (104±60 vs. 66±47 EPCs per 106 mononuclear cells, p=0.027). The circulating EPC level correlated positively with the circadian changes in the systolic and diastolic BP (r=0.435, p=0.003, and r=0.310, p=0.038, respectively). Conclusion The present study demonstrated that the EPC count was reduced in the peripheral bloodstream in non-dipper hypertensive patients.
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Affiliation(s)
- Seunghwan Kim
- Department of Cardiovascular Center, Regional Cardiocerebrovascular Disease Center, Wonkwang University Hospital, Iksan, Korea
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Fadini GP, Losordo D, Dimmeler S. Critical reevaluation of endothelial progenitor cell phenotypes for therapeutic and diagnostic use. Circ Res 2012; 110:624-37. [PMID: 22343557 DOI: 10.1161/circresaha.111.243386] [Citation(s) in RCA: 515] [Impact Index Per Article: 42.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Diverse subsets of endothelial progenitor cells (EPCs) are used for the treatment of ischemic diseases in clinical trials, and circulating EPCs levels are considered as biomarkers for coronary and peripheral artery disease. However, despite significant steps forward in defining their potential for both therapeutic and diagnostic purposes, further progress has been mired by unresolved questions around the definition and the mechanism of action of EPCs. Diverse culturing methods and detection of various combinations of different surface antigens were used to enrich and identify EPCs. These attempts were particularly challenged by the close relationship and overlapping markers of the endothelial and hematopoietic lineages. This article will critically review the most commonly used protocols to define EPCs by culture assays or by fluorescence-activated cell sorter in the context of their therapeutic or diagnostic use. We also delineate new research avenues to move forward our knowledge on EPC biology.
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Affiliation(s)
- Gian Paolo Fadini
- Institute of Cardiovascular Regeneration, Centre for Molecular Medicine, University of Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany
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Papasavvas E, Hsue P, Reynolds G, Pistilli M, Hancock A, Martin JN, Deeks SG, Montaner LJ. Increased CD34+/KDR+ cells are not associated with carotid artery intima-media thickness progression in chronic HIV-positive subjects. Antivir Ther 2011; 17:557-63. [PMID: 22300770 DOI: 10.3851/imp2013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2011] [Indexed: 01/01/2023]
Abstract
BACKGROUND Endothelial progenitor cells (EPCs) are involved in the endothelium repair. Low circulating EPC levels are predictive of cardiovascular events in HIV-negative subjects. The impact of HIV infection on EPCs, and the role of EPCs in HIV-associated cardiovascular disease, is not known. We hypothesized that circulating EPCs would be inversely associated with carotid artery intima-media thickness (c-IMT) changes in HIV-infected subjects. METHODS EPCs (CD34(+)/KDR(+), CD133(+)/KDR(+) and CD34(+)/CD133(+)/KDR(+)) were defined retrospectively by flow cytometry in cryopreserved peripheral blood mononuclear cells collected longitudinally from 66 chronic HIV-infected subjects and cross-sectionally from 50 at-risk HIV-negative subjects. The HIV-infected subjects participated in the Study of the Consequences of the Protease Inhibitor Era (SCOPE) cohort, were receiving antiretroviral therapy (59/66) and had two sequential measurements of c-IMT 1 year apart. Two distinct groups of HIV-infected subjects were identified a priori: rapid c-IMT progressors (subjects with rapid c-IMT progression, n=13, Δc-IMT>0.2 mm) and slow c-IMT progressors (subjects with slow or no c-IMT progression, n=53, Δc-IMT<0.2 mm). RESULTS Although cryopreservation reduced sensitivity of detection, EPC frequency in HIV-infected subjects was still significantly higher compared to at-risk HIV-negative subjects (CD34(+)/KDR(+); P=0.01) and correlated positively with CD4(+) T-cell count (CD34(+)/KDR(+), r=0.27; P=0.03). No association was found between the change of EPC frequencies over time (ΔEPC) and Δc-IMT or between EPC frequencies and c-IMT or Δc-IMT. CONCLUSIONS The lack of an association between EPCs and c-IMT in our cohort does not support HIV-associated reductions in EPC frequency as a cause of accelerated atherosclerosis.
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Bettencourt N, Oliveira S, Michael Toschke A, Rocha J, Leite D, Carvalho M, Xará S, Schuster A, Chiribiri A, Leite-Moreira A, Nagel E, Alves H, Gama V. Predictors of circulating endothelial progenitor cell levels in patients without known coronary artery disease referred for multidetector computed tomography coronary angiography. REVISTA PORTUGUESA DE CARDIOLOGIA (ENGLISH EDITION) 2011. [DOI: 10.1016/s2174-2049(11)70022-8] [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] Open
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Bettencourt N, Oliveira S, Toschke AM, Rocha J, Leite D, Carvalho M, Xará S, Schuster A, Chiribiri A, Leite-Moreira A, Nagel E, Alves H, Gama V. Predictors of circulating endothelial progenitor cell levels in patients without known coronary artery disease referred for multidetector computed tomography coronary angiography. Rev Port Cardiol 2011; 30:753-60. [DOI: 10.1016/s0870-2551(11)70022-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Accepted: 05/24/2011] [Indexed: 01/16/2023] Open
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Liberda EN, Cuevas AK, Gillespie PA, Grunig G, Qu Q, Chen LC. Exposure to inhaled nickel nanoparticles causes a reduction in number and function of bone marrow endothelial progenitor cells. Inhal Toxicol 2010; 22 Suppl 2:95-9. [PMID: 20936915 DOI: 10.3109/08958378.2010.515269] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
INTRODUCTION Particulate matter (PM), specifically nickel (Ni) found on or in PM, has been associated with an increased risk of mortality in human population studies and significant increases in vascular inflammation, generation of reactive oxygen species, altered vasomotor tone, and potentiated atherosclerosis in murine exposures. Recently, murine inhalation of Ni nanoparticles have been shown to cause pulmonary inflammation that affects cardiovascular tissue and potentiates atherosclerosis. These adverse cardiovascular outcomes may be due to the effects of Ni on endothelial progenitor cells (EPCs), endogenous semi-pluripotent stem cells that aid in endothelial repair. Thus, we hypothesize that Ni nanoparticle exposures decrease cell count and cause impairments in function that may ultimately have significant effects on various cardiovascular diseases, such as, atherosclerosis. METHODS Experiments involving inhaled Ni nanoparticle exposures (2 days/5 h/day at ∼1200 µg/m(3), 3 days/5 h/day at ∼700 µg/m(3), and 5 days/5 h/day at ∼100 µg/m(3)), were performed in order to quantify bone marrow resident EPCs using flow cytometry in C57BL/6 mice. Plasma levels of human stromal cell-derived factor 1α (SDF-1α) and vascular endothelial growth factor (VEGF) were assessed by enzyme-linked immunosorbent assay and in vitro functional assessments of cultured EPCs were conducted. RESULTS AND CONCLUSIONS Significant EPC count differences between exposure and control groups for Ni nanoparticle exposures were observed. Differences in EPC tube formation and chemotaxis were also observed for the Ni nanoparticle exposed group. Plasma VEGF and SDF-1α differences were not statistically significant. In conclusion, this study shows that inhalation of Ni nanoparticles results in functionally impaired EPCs and reduced number in the bone marrow, which may lead to enhanced progression of atherosclerosis.
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Affiliation(s)
- Eric N Liberda
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York, USA
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Chang HW, Leu S, Sun CK, Hang CL, Youssef AA, Hsieh YK, Yang CH, Cheng CI, Chen SM, Chen CJ, Chua S, Chang LT, Wu CJ, Yip HK. Level and value of circulating endothelial progenitor cells in patients with acute myocardial infarction undergoing primary coronary angioplasty: in vivo and in vitro studies. Transl Res 2010; 156:251-63. [PMID: 20875902 DOI: 10.1016/j.trsl.2010.07.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 07/13/2010] [Accepted: 07/20/2010] [Indexed: 10/19/2022]
Abstract
Levels of circulating endothelial progenitor cells (EPCs) in acute ST-elevation myocardial infarction (STEMI) patients undergoing primary coronary intervention (PCI) were investigated in this study. Flow cytometric analysis of the circulating EPC level (CD31/CD34 [E(1)], CD62E/CD34 [E(2)], and KDR/CD34 [E(3)]) was determined from blood samples of 161 consecutive patients with STEMI undergoing primary PCI. Angiogenesis was evaluated using mononuclear cell-derived EPCs on Matrigel. The EPC number (E(1-3)) was lower in STEMI patients than in normal subjects (n = 25) (P < 0.005). Patients with high EPCs (E(1-3)) (≥1.2%) had a lower left ventricular ejection fraction, elevated white blood cell count and creatinine level, advanced Killip score (≥class 3), more advanced congestive heart failure (CHF) (≥class 3), and increased 30-day mortality than those with a low EPC (E(1-3)) level (<1.2%) (P < 0.0001). Angiogenesis was lower in patients with a high EPC level than those with a low EPC level and normal controls (P < 0.001). Both the advanced Killip score and the CHF were independent predictors of increased EPC levels (P < 0.05). Multivariate analysis identified a high EPC (E(3)) level to be the most important predictor of increased 30-day major adverse clinical outcome (MACO) (P < 0.0001). In conclusion, the circulating EPC level is a major independent predictor of 30-day MACO in patients with STEMI undergoing primary PCI.
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Affiliation(s)
- Hsueh-Wen Chang
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan
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Padfield GJ, Newby DE, Mills NL. Understanding the role of endothelial progenitor cells in percutaneous coronary intervention. J Am Coll Cardiol 2010; 55:1553-65. [PMID: 20378071 DOI: 10.1016/j.jacc.2009.10.070] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 10/14/2009] [Accepted: 10/17/2009] [Indexed: 12/22/2022]
Abstract
Percutaneous coronary intervention is associated with mechanical endovascular injury and endothelial denudation. Re-endothelialization is essential for restoration of normal vascular homeostasis and regulation of neointimal hyperplasia. The endothelial progenitor cell recently emerged as an important component of the response to vascular injury, having the potential to accelerate vascular repair through rapid re-endothelialization. There remains considerable uncertainty over the precise identity and function of endothelial progenitor cells, and harnessing their therapeutic potential remains a challenge. A better understanding of the role of circulating progenitors in the response to vascular injury is necessary if we are to develop effective strategies to enhance vascular repair after percutaneous coronary intervention. In this review, we examine the preclinical and clinical evidence of a role for bone marrow-derived putative endothelial progenitor cells after iatrogenic vascular injury associated with balloon angioplasty and stent deployment. Therapies designed to mobilize endothelial progenitors or to increase their ability to home to the site of stent implantation may have a role in the future management of patients undergoing percutaneous coronary intervention.
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Affiliation(s)
- Gareth J Padfield
- Centre for Cardiovascular Science, Edinburgh University, Edinburgh, United Kingdom.
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Sathya CJ, Sheshgiri R, Prodger J, Tumiati L, Delgado D, Ross HJ, Rao V. Correlation between circulating endothelial progenitor cell function and allograft rejection in heart transplant patients. Transpl Int 2010; 23:641-8. [DOI: 10.1111/j.1432-2277.2009.01043.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Yiu KH, Wang S, Mok MY, Ooi GC, Khong PL, Lau CP, Lai WH, Wong LY, Lam KF, Lau CS, Tse HF. Role of circulating endothelial progenitor cells in patients with rheumatoid arthritis with coronary calcification. J Rheumatol 2010; 37:529-35. [PMID: 20080904 DOI: 10.3899/jrheum.090782] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVE Patients with rheumatoid arthritis (RA) are prone to premature atherosclerosis. We hypothesize that depletion of circulating endothelial progenitor cells (EPC) related to RA can contribute to the development of atherosclerosis. METHODS We studied coronary calcifications by multidetector computed tomography and their relationship with different subtypes of circulating EPC in 70 patients with RA and 35 age- and sex-matched controls (mean age 54.1 +/- 10.2 yrs, 87% were women). The presence of coronary atherosclerosis was defined as an Agatston score > or = 10. Four subpopulations of EPC were determined by flow cytometry on the basis of surface expression of CD34, CD133, and KDR antigen: CD34+, CD34/KDR+, CD133+, and CD133/KDR+ EPC, respectively. RESULTS Among those with RA, 15 patients (21%) had coronary atherosclerosis. The mean Agatston score was higher (61.8 +/- 201.7 vs 0.14 +/- 0.69; p = 0.01) and coronary atherosclerosis was more prevalent (21.4% vs 0%; p < 0.01) in patients with RA compared to controls. RA patients with coronary atherosclerosis were older (66.2 +/- 6.9 vs 51.5 +/- 16.2 yrs; p < 0.01), had higher prevalence of hypertension (46.7% vs 14.5%; p = 0.01), and had lower CD133/KDR+ (0.45% +/- 0.28% vs 0.89% +/- 0.81%; p < 0.01) and CD133+ EPC levels (0.74% +/- 0.39% vs 1.22% +/- 0.83%; p < 0.01), but similar CD34/KDR+ and CD34+ EPC levels (all p > 0.05) compared to those without. Multiple logistic regression revealed that older age (OR 1.25, 95% CI 1.10-1.41, p < 0.01) and lower CD133/KDR+ EPC (OR 0.07, 95% CI 0.00-0.97, p < 0.01) were independent predictors for coronary atherosclerosis in patients with RA. CONCLUSION Our results demonstrated that RA patients with coronary atherosclerosis have significantly lower levels of CD133/KDR+ and CD133+ EPC than those without. In addition to older age, lower levels of circulating CD133/KDR+ EPC also predicted occurrence of coronary atherosclerosis in RA patients.
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Affiliation(s)
- Kai-Hang Yiu
- Cardiology Division, Department of Medicine, The University of Hong Kong, Hong Kong
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Hristov M, Schmitz S, Schuhmann C, Leyendecker T, von Hundelshausen P, Krötz F, Sohn HY, Nauwelaers FA, Weber C. An optimized flow cytometry protocol for analysis of angiogenic monocytes and endothelial progenitor cells in peripheral blood. Cytometry A 2010; 75:848-53. [PMID: 19739088 DOI: 10.1002/cyto.a.20772] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Circulating adult CD34(+)VEGFR2(+) endothelial progenitor cells (EPCs) have been shown to differentiate into endothelial cells, thus contributing to vascular homeostasis. Furthermore, a subset of circulating CD14(+) monocytes coexpresses CD16 together with the angiopoietin receptor Tie2 and has been functionally implicated in tumor angiogenesis. However, clinically applicable protocols for flow cytometric quantification of EPCs and Tie2(+) monocytes in peripheral blood and a consensus on reference values remain elusive. The number of Tie2(+)CD14(+)CD16(mid) angiogenic monocytes and CD34(+)VEGFR2(+)CD45(low/-) EPCs was assessed in the peripheral venous blood of patients with stable coronary artery disease by three-color flow cytometry using specific monoclonal antibodies conjugated to PerCP, PE, PE-Cy7, APC, and APC-Cy7. Scatter multigating with exclusion of dead cells was performed to dissect complex mononuclear cell populations. This analysis was further refined by matching bright fluorochromes (PE-Cy7, PE, APC) with dimly expressed markers (CD34, VEGFR2, Tie2), by automatic compensation for minimizing fluorescence spillover and by using fluorescence-minus-one (FMO) controls to determine positive/negative boundaries. Presuming a Gaussian distribution, we obtained average values (mean +/- SD) of 1.45 +/- 1.29% for Tie2(+)CD14(+)CD16(mid) monocytes (n = 11, range: 0.12-3.64%) and 0.019 +/- 0.013% for CD34(+)VEGFR2(+)CD45(low/-) EPCs (n = 17, range: 0.003-0.042%). The intra- and inter-assay variability was 1.6% and 4.5%, respectively. We have optimized a fast and sensitive assay for the flow cytometric quantification of circulating angiogenic monocytes and EPCs in cardiovascular medicine. This protocol may represent a basis for standardized analysis and monitoring of these cell subsets to define their normal range and prognostic/diagnostic value in clinical use.
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Affiliation(s)
- Mihail Hristov
- Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, 52074 Aachen, Germany.
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Sepp D, Esposito L, Zepper P, Ott I, Feurer R, Sadikovic S, Hemmer B, Poppert H. Surface expression of CXCR4 on circulating CD133progenitor cells is associated with plaque instability in subjects with carotid artery stenosis. JOURNAL OF ANGIOGENESIS RESEARCH 2009; 1:10. [PMID: 20072672 PMCID: PMC2806248 DOI: 10.1186/2040-2384-1-10] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Accepted: 12/27/2009] [Indexed: 01/01/2023]
Abstract
Background Circulating progenitor cells (PCs) are considered to contribute to the remodeling of atherosclerotic plaques. Their surface receptor CXCR4 plays an important role in the recruitment of PCs to their target. This study compares the mobilization of PCs and their functional characteristics in asymptomatic subjects with stable and with unstable carotid plaques. This could provide insight into plaque remodeling and help to develop biomarkers for plaque stability. Methods In 31 subjects with asymptomatic carotid artery stenosis we analyzed the number of CD133+ PCs, VEGFR2+CD34+ PCs and the surface expression of CXCR4 on CD133+ PCs by flow cytometry. Subjects underwent bilateral carotid MRI in a 1.5-T scanner in order to allow the categorization of plaques, following the modified criteria of the American Heart Association. Results The number of CD133+ PCs and VEGFR2+CD34+ PCs showed no significant difference between subjects with stable and unstable carotid plaques. The expression of CXCR4 on CD133+ PCs was higher in subjects with unstable plaques than in subjects with stable plaques (p = 0.009). Conclusions This study demonstrates an association between functional characteristics of circulating CD133+ PCs and plaque stability in subjects with asymptomatic carotid artery stenosis. The higher expression of CXCR4 on CD133+ PCs suggests a difference in the recruitment of PCs to the injured tissue in subjects with unstable plaques and subjects with stable plaques. As surface expression of CXCR4 on CD133+ PCs differs in subjects with unstable and with stable plaques, CXCR4 is a promising candidate for a serological biomarker for plaque stability.
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Affiliation(s)
- Dominik Sepp
- Department of Neurology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Germany
| | - Lorena Esposito
- Department of Neurology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Germany
| | - Peter Zepper
- Department of Neurology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Germany
| | - Ilka Ott
- Department of Cardiology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Germany
| | - Regina Feurer
- Department of Neurology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Germany
| | - Suwad Sadikovic
- Department of Neurology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Germany
| | - Bernhard Hemmer
- Department of Neurology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Germany
| | - Holger Poppert
- Department of Neurology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Germany
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Sabatier F, Camoin-Jau L, Anfosso F, Sampol J, Dignat-George F. Circulating endothelial cells, microparticles and progenitors: key players towards the definition of vascular competence. J Cell Mol Med 2009; 13:454-71. [PMID: 19379144 PMCID: PMC3822508 DOI: 10.1111/j.1582-4934.2008.00639.x] [Citation(s) in RCA: 165] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The balance between lesion and regeneration of the endothelium is critical for the maintenance of vessel integrity. Exposure to cardiovascular risk factors (CRF) alters the regulatory functions of the endothelium that progresses from a quiescent state to activation, apoptosis and death. In the last 10 years, identification of circulating endothelial cells (CEC) and endothelial-derived microparticles (EMP) in the circulation has raised considerable interest as non-invasive markers of vascular dysfunction. Indeed, these endothelial-derived biomarkers were associated with most of the CRFs, were indicative of a poor clinical outcome in atherothrombotic disorders and correlated with established parameters of endothelial dysfunction. CEC and EMP also behave as potential pathogenic vectors able to accelerate endothelial dysfunction and promote disease progression. The endothelial response to injury has been enlarged by the discovery of a powerful physiological repair process based on the recruitment of circulating endothelial progenitor cells (EPC) from the bone marrow. Recent studies indicate that reduction of EPC number and function by CRF plays a critical role in the progression of cardiovascular diseases. This EPC-mediated repair to injury response can be integrated into a clinical endothelial phenotype defining the ‘vascular competence’ of each individual. In the future, provided that standardization of available methodologies could be achieved, multimarker strategies combining CEC, EMP and EPC levels as integrative markers of ‘vascular competence’ may offer new perspectives to assess vascular risk and to monitor treatment efficacy.
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Affiliation(s)
- F Sabatier
- Aix-Marseille Université, Marseille, F-13385, France
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