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Pelliccia F, Zimarino M, De Luca G, Viceconte N, Tanzilli G, De Caterina R. Endothelial Progenitor Cells in Coronary Artery Disease: From Bench to Bedside. Stem Cells Transl Med 2022; 11:451-460. [PMID: 35365823 PMCID: PMC9154346 DOI: 10.1093/stcltm/szac010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 02/04/2022] [Indexed: 11/14/2022] Open
Abstract
Endothelial progenitor cells (EPCs) are a heterogeneous group of cells present in peripheral blood at various stages of endothelial differentiation. EPCs have been extensively investigated in patients with coronary artery disease (CAD), with controversial findings both on their role in atherosclerosis progression and in the process of neointimal growth after a percutaneous coronary intervention (PCI). Despite nearly 2 decades of experimental and clinical investigations, however, the significance of EPCs in clinical practice remains unclear and poorly understood. This review provides an update on the role of EPCs in the most common clinical scenarios that are experienced by cardiologists managing patients with CAD. We here summarize the main findings on the association of EPCs with cardiovascular risk factors, coronary atherosclerosis, and myocardial ischemia. We then discuss the potential effects of EPCs in post-PCI in-stent restenosis, as well as most recent findings with EPC-coated stents. Based on the mounting evidence of the relationship between levels of EPCs and several different adverse cardiovascular events, EPCs are emerging as novel predictive biomarkers of long-term outcomes in patients with CAD.
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Affiliation(s)
| | - Marco Zimarino
- Institute of Cardiology, “G. d’Annunzio” University, Chieti, Italy
- Cath Lab, SS. Annunziata Hospital, Chieti, Italy
| | - Giuseppe De Luca
- Division of Cardiology, Azienda Ospedaliero-Universitaria Maggiore della Carità, Università del Piemonte Orientale, Novara, Italy
| | - Nicola Viceconte
- Department of Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - Gaetano Tanzilli
- Department of Cardiovascular Sciences, Sapienza University, Rome, Italy
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Zembron-Lacny A, Dziubek W, Tylutka A, Wacka E, Morawin B, Bulinska K, Stefanska M, Wozniewski M, Szuba A. Assessment of Serum Neopterin as a Biomarker in Peripheral Artery Disease. Diagnostics (Basel) 2021; 11:diagnostics11101911. [PMID: 34679610 PMCID: PMC8534562 DOI: 10.3390/diagnostics11101911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 11/16/2022] Open
Abstract
Neopterin (NPT), a pyrazino-pyrimidine compound mainly produced by activated macrophages, has been regarded as a proinflammatory and proatherosclerotic agent. The study was designed to evaluate NPT level and its interaction with conventional peripheral artery disease (PAD) biomarkers and vascular regenerative potential in severe PAD. The study included 59 patients (females n = 17, males n = 42) aged 67.0 ± 8.2 years classified into two groups based on ankle-brachial index (ABI) measurements (ABI ≤ 0.9 n = 43, ABI ≤ 0.5 n = 16). A total of 60 subjects aged 70.4 ± 5.5 years (females n = 42, males n = 18) with ABI > 0.9 constituted a reference group. NPT concentration reached values above 10 nmol/L in patients with PAD, which differed significantly from reference group (8.15 ± 1.33 nmol/L). High levels of CRP > 5 mg/L, TC > 200 mg/dL as well as lipoproteins LDL > 100 mg/dL and non-HDL > 130 mg/dL were found in the same group, indicating the relationship between NPT and conventional atherogenic markers. The endothelial progenitor cells (EPCs) tended toward lower values in patients with ABI ≤ 0.5 when compared to reference group, and inversely correlated with NPT. These findings indicate a crucial role of NPT in atheromatous process and its usefulness in monitoring PAD severity. However, the role of NPT in chronic PAD needs further studies including relatively high number of subjects.
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Affiliation(s)
- Agnieszka Zembron-Lacny
- Department of Applied and Clinical Physiology, Collegium Medicum University of Zielona Gora, 65-417 Zielona Gora, Poland; (A.Z.-L.); (A.T.); (B.M.)
| | - Wioletta Dziubek
- Faculty of Physiotherapy, University School of Physical Education in Wroclaw, 51-612 Wroclaw, Poland; (W.D.); (K.B.); (M.S.); (M.W.)
| | - Anna Tylutka
- Department of Applied and Clinical Physiology, Collegium Medicum University of Zielona Gora, 65-417 Zielona Gora, Poland; (A.Z.-L.); (A.T.); (B.M.)
| | - Eryk Wacka
- Collegium Medicum, University of Zielona Gora, 65-417 Zielona Gora, Poland
- Correspondence: ; Tel.: +48-534-100-354
| | - Barbara Morawin
- Department of Applied and Clinical Physiology, Collegium Medicum University of Zielona Gora, 65-417 Zielona Gora, Poland; (A.Z.-L.); (A.T.); (B.M.)
| | - Katarzyna Bulinska
- Faculty of Physiotherapy, University School of Physical Education in Wroclaw, 51-612 Wroclaw, Poland; (W.D.); (K.B.); (M.S.); (M.W.)
| | - Malgorzata Stefanska
- Faculty of Physiotherapy, University School of Physical Education in Wroclaw, 51-612 Wroclaw, Poland; (W.D.); (K.B.); (M.S.); (M.W.)
| | - Marek Wozniewski
- Faculty of Physiotherapy, University School of Physical Education in Wroclaw, 51-612 Wroclaw, Poland; (W.D.); (K.B.); (M.S.); (M.W.)
| | - Andrzej Szuba
- Department of Angiology, Hypertension and Diabetology Medical University Wroclaw, 50-556 Wroclaw, Poland;
- WROVASC An Integrated Cardiovascular Centre, Specialist District Hospital in Wroclaw, Centre for Research and Development Wroclaw, 51-124 Wroclaw, Poland
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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] [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. Supplementary Information The online version contains supplementary material available at 10.1186/s12920-021-01062-2.
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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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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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Rheumatoid arthritis (RA) and cardiovascular disease. Autoimmun Rev 2019; 18:679-690. [PMID: 31059840 DOI: 10.1016/j.autrev.2019.05.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 01/27/2019] [Indexed: 12/13/2022]
Abstract
Patients with rheumatoid arthritis (RA) suffer cardiovascular events 1.5-2 fold than the general population, and cardiovascular (CV) events are leading cause of death in patients with RA. It is known that patients with RA have endothelial dysfunction, related with impaired function of endothelial progenitor cells (EPCs). The mechanistic pathways leading to endothelial function are complicated, but understanding these mechanisms may open new frontiers of management and therapies to patients suffering from atherosclerosis. Inflammation is a key factor in atherosclerosis, including endothelial function, plaque stabilization and post infarct remodeling; thus, inhibition of TNF-α may affect the inflammatory burden and plaque vulnerability leading to less cardiovascular events and myocardial infarctions. An aggressive management of inflammation may lead to a significant improvement in the clinical cardiovascular outcome of patients with RA. The clinical evidence that showed a reduced risk of CV events following treatment with anti-inflammatory agents may suggest a new approach to treat atherosclerosis, i.e., inhibition of inflammation using biological medications that were primarily aimed to treat the high scale inflammation of RA and other autoimmune-inflammatory diseases, but may be useful also to prevent progression of atherosclerosis.
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Mobilization of Stem and Progenitor Cells in Septic Shock Patients. Sci Rep 2019; 9:3289. [PMID: 30824730 PMCID: PMC6397313 DOI: 10.1038/s41598-019-39772-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 01/21/2019] [Indexed: 12/14/2022] Open
Abstract
Septic shock is associated with multiple injuries to organs and tissues. These events may induce the regenerative response of adult stem cells. However, little is known about how endogenous stem cells are modulated by sepsis. This study analyzed the circulation of hematopoietic stem cells (HSCs), endothelial progenitor cells (EPCs) and very small embryonic-like stem cells (VSELs) in the peripheral blood of patients with septic shock. Thirty-three patients with septic shock and twenty-two healthy control subjects were enrolled in this prospective observational study. Blood samples were collected on the first, third and seventh days of septic shock. Populations of stem cells were analyzed by flow cytometry. Chemotactic mediators were analyzed by HPLC and ELISA. Populations of early HSCs (Lin-CD133+CD45+ and CD34+CD38−) were mobilized to the peripheral blood after an initial decrease. Mobilized HSCs showed significantly increased expression of Ki-67, a marker of cell proliferation. Circulating EPCs and VSELs were mobilized to the blood circulation upon the first day of sepsis. Patients with a greater number of Lin-CD133+CD45+ HSCs and Lin-CD34+CD45− VSELs had a significantly lower probability of 60-day survival. The concentration of CXCL12 was elevated in the blood of septic patients, while the concentration of sphingosine-1-phosphate was significantly decreased. As an emergency early response to sepsis, VSELs and EPCs were mobilized to the peripheral blood, while the HSCs showed delayed mobilization. Differential mobilization of stem cell subsets reflected changes in the concentration of chemoattractants in the blood. The relationship between the probability of death and a large number of HSCs and VSELs in septic shock patients can be used as a novel prognostic marker and may provide new therapeutic approaches.
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Riesinger L, Saemisch M, Nickmann M, Methe H. CD34 + circulating cells display signs of immune activation in patients with acute coronary syndrome. Heart Vessels 2018; 33:1559-1569. [PMID: 30003322 DOI: 10.1007/s00380-018-1220-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 07/06/2018] [Indexed: 01/20/2023]
Abstract
Bone marrow-derived endothelial progenitor cells (EPC) are released into the peripheral blood in situations of vascular repair/angiogenesis. Regulation of vascular repair and angiogenesis by EPC depends not only on the number of circulating EPC but also on their functionality. As endothelial cells can act as antigen-presenting cells in coronary artery disease (CAD), we postulated that EPC can be immune activated here as well. CD34+-EPC were isolated from peripheral blood of patients with ST-elevation myocardial infarction (STEMI, n = 12), non-STEMI/unstable angina (UA, n = 15), and stable CAD (SA, n = 18). Expression of HLA-DR, adhesion and costimulatory molecules by isolated CD34+-EPC were compared with levels in healthy controls (n = 18). There were no significant differences in VCAM-1 and CD80 expression by peripheral circulating CD34+-EPC between the four groups, yet expression of CD86 was highest in UA (p < 0.05). ICAM-1 expression was lowest in SA (p < 0.01). CD34+-EPC constitutively expressed HLA-DR across all groups. Of note, patients pretreated with HMG-CoA reductase inhibitors exhibited lower expression of VCAM-1 by CD34+-EPC throughout all patient groups; furthermore, statins significantly limited ex vivo-induced upregulation of ICAM-1 by TNF-alpha. To the best of our knowledge, this is the first study to examine the expression of immune markers in peripheral circulating CD34+-EPC ex vivo. We demonstrate that CD34+-EPC display different patterns of adhesion and costimulatory molecules in various states of CAD. Expression levels were affected by pretreatment with statins. Hence, immune activity of peripheral circulating CD34+ cells might play a pathophysiologic role in evolution of CAD.
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Affiliation(s)
- Lisa Riesinger
- Department of Cardiology, Ludwig-Maximilians-University Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Michael Saemisch
- Department of Cardiology, Ludwig-Maximilians-University Munich, Marchioninistrasse 15, 81377, Munich, Germany
- Department of Internal Medicine, Kliniken Neumarkt, Neumarkt, Germany
| | - Markus Nickmann
- Department of Internal Medicine/Cardiology, Kliniken an der Paar, Aichach, Germany
| | - Heiko Methe
- Department of Cardiology, Ludwig-Maximilians-University Munich, Marchioninistrasse 15, 81377, Munich, Germany.
- Department of Internal Medicine/Cardiology, Kliniken an der Paar, Aichach, Germany.
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
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Baldassarre MPA, Andersen A, Consoli A, Knop FK, Vilsbøll T. Cardiovascular biomarkers in clinical studies of type 2 diabetes. Diabetes Obes Metab 2018; 20:1350-1360. [PMID: 29419909 DOI: 10.1111/dom.13247] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 02/01/2018] [Accepted: 02/04/2018] [Indexed: 01/08/2023]
Abstract
When planning cardiovascular (CV) studies in type 2 diabetes (T2D), selection of CV biomarkers is a complex issue. Because the pathophysiology of CV disease (CVD) in T2D is multifactorial, ideally, the selected CV biomarkers should cover all aspects of the known pathophysiology of the disease. This will allow the researcher to distinguish between effects on different aspects of the pathophysiology. To this end, we discuss a host of biomarkers grouped according to their role in the pathogenesis of CVD, namely: (1) cardiac damage biomarkers; (2) inflammatory biomarkers; and (3) novel biomarkers (oxidative stress and endothelial dysfunction biomarkers). Within each category we present the best currently validated biomarkers, with special focus on the population of interest (people with T2D). For each individual biomarker, we discuss the physiological role, validation in the general population and in people with T2D, analytical methodology, modifying factors, effects of glucose-lowering drugs, and interpretation. This approach will provide clinical researchers with the information necessary for planning, conducting and interpreting results from clinical trials. Furthermore, a systematic approach to selection of CV biomarkers in T2D research will improve the quality of future research.
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Affiliation(s)
- Maria P A Baldassarre
- Department of Medicine and Aging Sciences, G. d'Annunzio University, Chieti, Italy
- Aging and Translational Medicine Research Center, CeSI-Met, G. d'Annunzio' University, Chieti, Italy
- Clinical Metabolic Physiology, Steno Diabetes Center Copenhagen, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | - Andreas Andersen
- Clinical Metabolic Physiology, Steno Diabetes Center Copenhagen, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | - Agostino Consoli
- Department of Medicine and Aging Sciences, G. d'Annunzio University, Chieti, Italy
- Aging and Translational Medicine Research Center, CeSI-Met, G. d'Annunzio' University, Chieti, Italy
| | - Filip K Knop
- Clinical Metabolic Physiology, Steno Diabetes Center Copenhagen, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Tina Vilsbøll
- Clinical Metabolic Physiology, Steno Diabetes Center Copenhagen, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Montenegro FS, Correia M, Muccillo F, Souza E Silva CG, De Lorenzo A. Associations between endothelial progenitor cells, clinical characteristics and coronary restenosis in patients undergoing percutaneous coronary artery intervention. BMC Res Notes 2018; 11:278. [PMID: 29739448 PMCID: PMC5941758 DOI: 10.1186/s13104-018-3401-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 05/03/2018] [Indexed: 12/15/2022] Open
Abstract
Objective Endothelial progenitor cells (EPCs) are produced in the bone marrow and mobilized to the peripheral blood playing a key role in endothelial repair. The objective of this study was to evaluate circulating EPC before and after percutaneous coronary intervention (PCI) with stent implantation and their associations with coronary restenosis and adverse cardiovascular events. Venous blood was obtained before and the day after PCI. Quantification of total white blood count and identification of EPCs (CD45−CD34+CD31+CD133/2+CD309+) through immunophenotyping by flow cytometry was performed. The primary outcome was either restenosis detected by new coronary angiography or angina with myocardial ischemia at the territory of the stented coronary artery. Secondary outcomes were angina without demonstrable myocardial ischemia, acute coronary syndrome or all-cause death. Results 37 patients were followed for 1 year. The median EPC count before PCI was 320 cells/mcl and after PCI 286 cells/mcl. A decrease of EPC count was found in 65% of the patients, while 35% displayed an increase. Primary outcomes occurred in 10.8% and the secondary in 37.8% of the patients. Despite a higher level of EPC before (402 cell/mcl) and after PCI (383 cell/mcl) in patients with the secondary outcomes, there was no significant association between EPC and cardiovascular events. Electronic supplementary material The online version of this article (10.1186/s13104-018-3401-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Fernando S Montenegro
- Instituto Nacional de Cardiologia, Rua da Laranjeiras, 374-Laranjeiras, Rio de Janeiro, 2224006, Brazil.
| | - Marcelo Correia
- Instituto Nacional de Cardiologia, Rua da Laranjeiras, 374-Laranjeiras, Rio de Janeiro, 2224006, Brazil
| | - Fabiana Muccillo
- Instituto Nacional de Cardiologia, Rua da Laranjeiras, 374-Laranjeiras, Rio de Janeiro, 2224006, Brazil
| | - Christina G Souza E Silva
- Instituto Nacional de Cardiologia, Rua da Laranjeiras, 374-Laranjeiras, Rio de Janeiro, 2224006, Brazil
| | - Andrea De Lorenzo
- Instituto Nacional de Cardiologia, Rua da Laranjeiras, 374-Laranjeiras, Rio de Janeiro, 2224006, Brazil
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Topel ML, Hayek SS, Ko YA, Sandesara PB, Samman Tahhan A, Hesaroieh I, Mahar E, Martin GS, Waller EK, Quyyumi AA. Sex Differences in Circulating Progenitor Cells. J Am Heart Assoc 2017; 6:JAHA.117.006245. [PMID: 28974500 PMCID: PMC5721840 DOI: 10.1161/jaha.117.006245] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Lower levels of circulating progenitor cells (PCs) reflect impaired endogenous regenerative capacity and are associated with aging, vascular disease, and poor outcomes. Whether biologic sex and sex hormones influence PC numbers remains a subject of controversy. We sought to determine sex differences in circulating PCs in both healthy persons and patients with coronary artery disease, and to determine their association with sex hormone levels. Methods and Results In 642 participants (mean age 48 years, 69% women, 23% black) free from cardiovascular disease, we measured circulating PC counts as CD45med+ mononuclear cells coexpressing CD34 and its subsets expressing CD133, chemokine (C‐X‐C motif) receptor 4, and vascular endothelial growth factor receptor 2 epitopes using flow cytometry. Testosterone and estradiol levels were measured. After adjustment for age, cardiovascular risk factors, and body mass, CD34+ (β=−23%, P<0.001), CD34+/CD133+ (β=−20%, P=0.001), CD34+/chemokine (C‐X‐C motif) receptor 4–positive (β=−24%, P<0.001), and CD34+/chemokine (C‐X‐C motif) receptor 4–positive/CD133+ (β=−21%, P=0.001) PC counts, but not vascular endothelial growth factor receptor 2‐positive PC counts were lower in women compared with men. Estradiol levels positively correlated with hematopoietic, but not vascular endothelial growth factor receptor 2‐ positive PC counts in women (P<0.05). Testosterone levels and PC counts were not correlated in men. These findings were replicated in an independent cohort with prevalent coronary artery disease. Conclusions Women have lower circulating hematopoietic PC levels compared with men. Estrogen levels are modestly associated with PC levels in women. Since PCs are reflective of endogenous regenerative capacity, these findings may at least partly explain the rise in adverse cardiovascular events in women with aging and menopause.
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Affiliation(s)
- Matthew L Topel
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA
| | - Salim S Hayek
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA
| | - Yi-An Ko
- Department of Biostatistics and Bioinformatics, Emory University, Atlanta, GA
| | - Pratik B Sandesara
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA
| | | | - Iraj Hesaroieh
- Department of Hematology and Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Ernestine Mahar
- Department of Hematology and Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Greg S Martin
- Department of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA
| | - Edmund K Waller
- Department of Hematology and Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Arshed A Quyyumi
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA
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11
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Endothelial progenitor cells and hypertension: current concepts and future implications. Clin Sci (Lond) 2017; 130:2029-2042. [PMID: 27729472 DOI: 10.1042/cs20160587] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/09/2016] [Indexed: 02/07/2023]
Abstract
The discovery of endothelial progenitor cells (EPCs), a group of cells that play important roles in angiogenesis and the maintenance of vascular endothelial integrity, has led to considerable improvements in our understanding of the circulatory system and the regulatory mechanisms of vascular homoeostasis. Despite lingering disputes over where EPCs actually originate and how they facilitate angiogenesis, extensive research in the past decade has brought about significant advancements in this field of research, establishing EPCs as an essential element in the pathogenesis of various diseases. EPC and hypertensive disorders, especially essential hypertension (EH, also known as primary hypertension), represent one of the most appealing branches in this area of research. Chronic hypertension remains a major threat to public health, and the exact pathologic mechanisms of EH have never been fully elucidated. Is there a relationship between EPC and hypertension? If so, what is the nature of such relationship-is it mediated by blood pressure alterations, or other factors that lie in between? How can our current knowledge about EPCs be utilized to advance the prevention and clinical management of hypertension? In this review, we set out to answer these questions by summarizing the current concepts about EPC pathophysiology in the context of hypertension, while attempting to point out directions for future research on this subject.
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12
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Chang TY, Hsu CY, Chiu CC, Chou RH, Huang HL, Huang CC, Leu HB, Huang PH, Chen JW, Lin SJ. Association between echocardiographic epicardial fat thickness and circulating endothelial progenitor cell level in patients with stable angina pectoris. Clin Cardiol 2017; 40:697-703. [PMID: 28464274 DOI: 10.1002/clc.22717] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/21/2017] [Accepted: 03/24/2017] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Epicardial adipose tissue is associated with coronary artery disease (CAD). Circulating endothelial progenitor cell (EPC) level represents a marker of endothelial dysfunction and vascular health. However, the relationship between epicardial fat and circulating EPC remains unknown. This study aimed to investigate association between echocardiographic epicardial fat thickness (EFT) and circulating EPC level. HYPOTHESIS Epicardial fat causes inflammation and contributes to progression of CAD. METHODS We enrolled 213 consecutive patients with stable angina, and EFT was determined by echocardiography. Quantification of EPC markers (defined as CD34 + , CD34 + KDR + , CD34 + KDR + CD133 + cells) in peripheral blood samples was used to measure circulating EPCs. All patients were divided into 3 tertiles according to EFT levels: group 1, low tertile of EFT; group 2, middle tertile of EFT; and group 3, high tertile of EFT. RESULTS Among the 3 groups, CAD disease severity determined by SXscore was negatively correlated with EFT, but the difference did not reach statistical significance (P = 0.066). Additionally, patients in the high and middle tertiles of EFT had higher circulating EPC levels than did those in the low tertile of EFT (P = 0.001 and P < 0.001, respectively). In multivariate analysis, EPC level was significantly associated with echocardiographic EFT (standardized β = -0.233, P = 0.001), independent of multiple covariates. CONCLUSIONS Epicardial adipose tissue is associated with circulating EPC levels. There was a trend between epicardial fat and severity of CAD, though analysis did not reach statistical significance, and this may be attributed to the interaction between several risk factors of CAD.
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Affiliation(s)
- Ting-Yung Chang
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan.,Division of Cardiology and Cardiovascular Research Center, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chien-Yi Hsu
- Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan.,Division of Cardiology and Cardiovascular Research Center, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan.,Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chun-Chih Chiu
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Ruey-Hsing Chou
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Hsin-Lei Huang
- Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chin-Chou Huang
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan.,Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
| | - Hsin-Ban Leu
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Po-Hsun Huang
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Jaw-Wen Chen
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan.,Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan.,Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shing-Jong Lin
- Division of Cardiology, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan.,Taipei Medical University, Taipei, Taiwan
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13
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Gebhard C, Rhéaume E, Berry C, Brand G, Kernaleguen AE, Théberge-Julien G, Alam MA, Lee CYW, Boileau L, Chabot-Blanchet M, Guertin MC, Lavoie MA, Grégoire J, Ibrahim R, L'Allier P, Tardif JC. Beneficial Effects of Reconstituted High-Density Lipoprotein (rHDL) on Circulating CD34+ Cells in Patients after an Acute Coronary Syndrome. PLoS One 2017; 12:e0168448. [PMID: 28060837 PMCID: PMC5218493 DOI: 10.1371/journal.pone.0168448] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 12/01/2016] [Indexed: 12/16/2022] Open
Abstract
Background High-density lipoproteins (HDL) favorably affect endothelial progenitor cells (EPC). Circulating progenitor cell level and function are impaired in patients with acute coronary syndrome (ACS). This study investigates the short-term effects of reconstituted HDL (rHDL) on circulating progenitor cells in patients with ACS. Methods and Findings The study population consisted of 33 patients with recent ACS: 20 patients from the ERASE trial (randomized to receive 4 weekly intravenous infusions of CSL-111 40 mg/kg or placebo) and 13 additional patients recruited as controls using the same enrolment criteria. Blood was collected from 16 rHDL (CSL-111)-treated patients and 17 controls at baseline and at 6–7 weeks (i.e. 2–3 weeks after the fourth infusion of CSL-111 in ERASE). CD34+ and CD34+/kinase insert domain receptor (KDR+) progenitor cell counts were analyzed by flow cytometry. We found preserved CD34+ cell counts in CSL-111-treated subjects at follow-up (change of 1.6%), while the number of CD34+ cells was reduced (-32.9%) in controls (p = 0.017 between groups). The level of circulating SDF-1 (stromal cell-derived factor-1), a chemokine involved in progenitor cell recruitment, increased significantly (change of 21.5%) in controls, while it remained unchanged in CSL-111-treated patients (p = 0.031 between groups). In vitro exposure to CSL-111 of early EPC isolated from healthy volunteers significantly increased CD34+ cells, reduced early EPC apoptosis and enhanced their migration capacity towards SDF-1. Conclusions The relative increase in circulating CD34+ cells and the low SDF-1 levels observed following rHDL infusions in ACS patients point towards a role of rHDL in cardiovascular repair mechanisms.
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Affiliation(s)
- Catherine Gebhard
- Montreal Heart Institute, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Eric Rhéaume
- Montreal Heart Institute, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Colin Berry
- Montreal Heart Institute, Montreal, Quebec, Canada
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, United Kingdom
| | | | | | | | | | | | - Laurianne Boileau
- Montreal Heart Institute, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | | | | | - Marc-André Lavoie
- Montreal Heart Institute, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Jean Grégoire
- Montreal Heart Institute, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Réda Ibrahim
- Montreal Heart Institute, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Philippe L'Allier
- Montreal Heart Institute, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Jean-Claude Tardif
- Montreal Heart Institute, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
- * E-mail:
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14
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Fadini GP, Rigato M, Cappellari R, Bonora BM, Avogaro A. Long-term Prediction of Cardiovascular Outcomes by Circulating CD34+ and CD34+CD133+ Stem Cells in Patients With Type 2 Diabetes. Diabetes Care 2017; 40:125-131. [PMID: 27815289 DOI: 10.2337/dc16-1755] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 10/19/2016] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Cardiovascular risk varies substantially in the population with diabetes, and biomarkers can improve risk stratification. Circulating stem cells predict future cardiovascular events and death, but data for the population with diabetes are scant. In this study we evaluated the ability of circulating stem cell levels to predict future cardiovascular outcomes and improve risk discrimination in patients with type 2 diabetes. RESEARCH DESIGN AND METHODS A cohort of 187 patients with type 2 diabetes was monitored for a median of 6.1 years. The primary outcome was time to a first cardiovascular event, defined as 3-point major adverse cardiovascular event (cardiovascular death, nonfatal myocardial infarction, or nonfatal stroke) plus hospitalization for cardiovascular causes. At baseline, we measured six stem/progenitor cell phenotypes in peripheral blood based on expression of CD34, CD133, and KDR. RESULTS The primary outcome occurred in 48 patients (4.5/100 patient-years). Patients with incident cardiovascular events had significantly lower CD34+ and CD34+CD133+ cells than those without. Higher rates of cardiovascular events occurred in patients with below median levels of CD34+ and CD34+CD133+. In Cox proportional hazards regression analyses, a reduced CD34+ (hazard ratio 2.21 [95% CI 1.14-4.29]) and CD34+CD133+ (2.98 [1.46-6.08]) cell count independently predicted future events. Addition of the CD34+ cell count to the reference model or the UK Prospective Diabetes Study risk engine improved C statistics, continuous net reclassification improvement, and/or integrated discrimination index. CONCLUSIONS In patients with type 2 diabetes, a reduced baseline level of circulating CD34+ stem cells predicts adverse cardiovascular outcomes up to 6 years later and improves risk stratification.
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Affiliation(s)
| | - Mauro Rigato
- Department of Medicine, University of Padova, Padova, Italy
| | | | | | - Angelo Avogaro
- Department of Medicine, University of Padova, Padova, Italy
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15
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Aschbacher K, Milush JM, Gilbert A, Almeida C, Sinclair E, Epling L, Grenon SM, Marco EJ, Puterman E, Epel E. Chronic stress is associated with reduced circulating hematopoietic progenitor cell number: A maternal caregiving model. Brain Behav Immun 2017; 59:245-252. [PMID: 27622676 PMCID: PMC5154768 DOI: 10.1016/j.bbi.2016.09.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 08/08/2016] [Accepted: 09/09/2016] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Chronic psychological stress is a risk factor for cardiovascular disease and mortality. Circulating hematopoietic progenitor cells (CPCs) maintain vascular homeostasis, correlate with preclinical atherosclerosis, and prospectively predict cardiovascular events. We hypothesize that (1) chronic caregiving stress is related to reduced CPC number, and (2) this may be explained in part by negative interactions within the family. METHODS We investigated levels of stress and CPCs in 68 healthy mothers - 31 of these had children with an autism spectrum disorder (M-ASD) and 37 had neurotypical children (M-NT). Participants provided fasting blood samples, and CD45+CD34+KDR+ and CD45+CD133+KDR+ CPCs were assayed by flow cytometry. We averaged the blom-transformed scores of both CPCs to create one index. Participants completed the perceived stress scale (PSS), the inventory for depressive symptoms (IDS), and reported on daily interactions with their children and partners, averaged over 7 nights. RESULTS M-ASD exhibited lower CPCs than M-NT (Cohen's d=0.83; p⩽0.01), controlling for age, BMI, and physical activity. Across the whole sample, positive interactions were related to higher CPCs, and negative interactions to lower CPCs (allp's<0.05). The adverse effects of group on CPCs were significantly mediated through negative interactions with the child (indirect β=-0.24, p⩽0.01). In the full model, greater age (β=-0.19, p=0.04), BMI (β=-0.18, p=0.04), and negative interactions with the child (β=-0.33, p<0.01) were independently associated with lower CPCs. M-ASD had a less healthy lipid profile (total cholesterol/HDL), which in turn, was associated with lower CPCs. CONCLUSIONS Chronic stress adversely impacts CPC number, an early-stage biomarker that predicts subclinical atherosclerosis and future CVD events, independent of traditional cardiovascular risk factors and inflammatory factors. Among maternal caregivers, child-related interpersonal stress appears to be a key psychological predictor of stress-related CVD risk.
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Affiliation(s)
- Kirstin Aschbacher
- Department of Psychiatry, University of California San Francisco, San Francisco, CA, United States; The Institute for Integrative Health, Baltimore, MD, United States.
| | - Jeffrey M. Milush
- Core Immunology Laboratory, Division of Experimental Medicine, University of California San Francisco, San Francisco, CA
| | - Amanda Gilbert
- Department of Psychiatry, University of California San Francisco, San Francisco, CA
| | - Carlos Almeida
- Department of Psychiatry, University of California San Francisco, San Francisco, CA
| | - Elizabeth Sinclair
- Core Immunology Laboratory, Division of Experimental Medicine, University of California San Francisco, San Francisco, CA
| | - Lorrie Epling
- Core Immunology Laboratory, Division of Experimental Medicine, University of California San Francisco, San Francisco, CA
| | - S. Marlene Grenon
- Department of Surgery, University of California San Francisco, San Francisco, California; CA, Department of Surgery, Veterans Affairs Medical Center, San Francisco, CA,Viperx Lab, San Francisco
| | - Elysa J. Marco
- Department of Neurology, University of California San Francisco, San Francisco, CA
| | - Eli Puterman
- School of Kinesiology, University of British Columbia, Canada
| | - Elissa Epel
- Department of Psychiatry, University of California San Francisco, San Francisco, CA
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16
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Xie C, Gao X, Luo Y, Pang Y, Li M. Electroacupuncture modulates stromal cell-derived factor-1α expression and mobilization of bone marrow endothelial progenitor cells in focal cerebral ischemia/reperfusion model rats. Brain Res 2016; 1648:119-126. [PMID: 27453543 DOI: 10.1016/j.brainres.2016.07.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 05/27/2016] [Accepted: 07/20/2016] [Indexed: 01/07/2023]
Abstract
Stromal cell-derived factor-1α(SDF-1α) plays a crucial role in regulating the mobilization, migration and homing of endothelial progenitor cells(EPCs). Electroacupuncture(EA), a modern version of Traditional Chinese Medicine, can improve neurological recovery and angiogenesis in cerebral ischemic area. This study aimed to investigate the effects of electroacupuncture(EA) on the mobilization and migration of bone marrow EPCs and neurological functional recovery in rats model after focal cerebral ischemia/reperfusion and the potentially involved mechanisms. Sprague-Dawley rats received filament occlusion of the right middle cerebral artery for 2h followed by reperfusion for 12h, 1d, 2d, 3d, 7d respectively. Rats were randomly divided into sham group, model group and EA group. After 2h of the reperfusion, EA was given at the "Baihui" (GV 20)/Siguan ("Hegu" (LI 4)/"Taichong" (LR 3)) acupoints in the EA group. Modified neurological severity score (mNSS) was used to assess the neurological functional recovery. EPCs number and SDF-1α level in bone marrow(BM) and peripheral blood(PB) were detected by using fluorescence-activated cell sorting (FACS) analysis and quantitative real time polymerase chain reaction (qRT-PCR) respectively. An mNSS test showed that EA treatment significantly improved the neurological functional outcome. EPCs number in PB and BM were obviously increased in the EA group. After cerebral ischemia, the SDF-1α level was decreased in BM while it was increased in PB, which implied a gradient of SDF-1α among BM and PB after ischemia. It suggested that the forming of SDF-1α concentration gradient can induce the mobilization and homing of EPCs. Eletroacupuncture as a treatment can accelerate and increase the forming of SDF-1α concentration gradient to further induce the mobilization of EPCs and angiogenesis in ischemic brain and improve the neurological function recovery.
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Affiliation(s)
- Chenchen Xie
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing 400016, China; Department of Neurology, Affiliated Hospital of Chengdu University, Chengdu, Sichuan 610018, China.
| | - Xiang Gao
- Department of Nephrology, The Eleventh People's Hospital of Chengdu, Chengdu, Sichuan 610018, China.
| | - Yong Luo
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing 400016, China.
| | - Yueshan Pang
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing 400016, China.
| | - Man Li
- Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing 400016, China.
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17
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Al Mheid I, Hayek SS, Ko YA, Akbik F, Li Q, Ghasemzadeh N, Martin GS, Long Q, Hammadah M, Maziar Zafari A, Vaccarino V, Waller EK, Quyyumi AA. Age and Human Regenerative Capacity Impact of Cardiovascular Risk Factors. Circ Res 2016; 119:801-9. [PMID: 27436845 DOI: 10.1161/circresaha.116.308461] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 07/19/2016] [Indexed: 01/11/2023]
Abstract
RATIONALE We investigated aging of human endogenous reparative capacity and aimed to clarify whether it is affected by presence of cardiovascular disease or its risk factors (RFs). OBJECTIVE Circulating progenitor cell (PC) levels reflect endogenous regenerative potential. The effect on PC of healthy aging compared with aging with RFs or cardiovascular disease (CVD) is unknown. We examined whether exposure to RF and CVD leads to an accelerated decline in circulating PC with increasing age. METHODS AND RESULTS In 2792 adult subjects, 498 were free of RFs (smoking, diabetes mellitus, hypertension, or hyperlipidemia), 1036 subjects had 1 to 2 RF, and 1253 had ≥3 RFs or CVD. PC were enumerated by flow cytometry as CD45(med+) mononuclear cells expressing CD34 and subsets coexpressing CD133, CXCR4, and vascular endothelial growth factor receptor-2 epitopes. Younger age, male sex, and larger body size correlated with higher PC counts (P<0.01). After multivariable adjustment, both age and RF categories were independently associated with PC counts (P<0.05), with lower PC counts in older subjects and those with higher RF burden or CVD. PC counts remained unchanged with increasing age in healthy individuals. There were significant interactions between age and RF categories (P≤0.005), such that for younger subjects (<40 years), RFs were associated with increased PC counts, whereas for older subjects (>60 years), RFs and CVD were associated with lower PC counts. CONCLUSIONS Circulating PC levels do not decline with healthy aging; RF exposure at a younger age stimulates PC mobilization, whereas continued exposure is associated with lower PC levels in later life. Over the lifespan, exposure to RFs and CVD is associated with an initial stimulation and subsequent decline in circulating PC levels, which reflect endogenous regenerative capacity.
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Affiliation(s)
- Ibhar Al Mheid
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Salim S Hayek
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Yi-An Ko
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Faysal Akbik
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Qunna Li
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Nima Ghasemzadeh
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Greg S Martin
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Qi Long
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Muhammad Hammadah
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - A Maziar Zafari
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Viola Vaccarino
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Edmund K Waller
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA
| | - Arshed A Quyyumi
- From the Division of Cardiology, Emory Clinical Cardiovascular Research Institute, Emory-Georgia Tech, Predictive Health Institute, Atlanta, GA.
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18
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Rigato M, Avogaro A, Fadini GP. Levels of Circulating Progenitor Cells, Cardiovascular Outcomes and Death. Circ Res 2016; 118:1930-9. [DOI: 10.1161/circresaha.116.308366] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 04/12/2016] [Indexed: 11/16/2022]
Abstract
Rationale:
Circulating progenitor cells (CPCs), including endothelial progenitor cells (EPCs) are biologically related to many aspects of cardiovascular disease, as they promote angiogenesis and vascular repair.
Objective:
We herein aimed to meta-analyze studies reporting the prognostic role of the CPC/EPC measure on cardiovascular outcomes and death.
Methods and Results:
We screened the English-language literature for longitudinal studies reporting the association between baseline CPC/EPC levels, future cardiovascular events, and death. We retrieved 28 studies, 21 of which contained poolable data and entered the meta-analysis, for a total of 4155 patients, mostly with a high baseline cardiovascular risk. Sixty percent of the studies met at least 11 of 16 items of quality assessment. Overall, reduced CPC/EPC levels were associated with a ≈2-fold increased risk of future cardiovascular events and cardiovascular death. The most predictive phenotype was CD34
+
CD133
+
: low versus high levels predicted cardiovascular events, restenosis after endovascular intervention, cardiovascular death, and all-cause mortality. Heterogeneity among studies and according to the CPC/EPC phenotype was generally high. Excluding studies for which the risk estimate had to be extrapolated or limiting the analyses to higher quality studies still indicated a significant risk for future cardiovascular events and death in patients with low versus high progenitor cell counts.
Conclusions:
This meta-analysis shows that a reduction in the levels of circulating cells putatively provided with vasculoregenerative properties represents a risk factor for adverse cardiovascular outcomes and death.
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Affiliation(s)
- Mauro Rigato
- From the Department of Medicine, University of Padova, Padova, Italy
| | - Angelo Avogaro
- From the Department of Medicine, University of Padova, Padova, Italy
| | - Gian Paolo Fadini
- From the Department of Medicine, University of Padova, Padova, Italy
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19
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Hayek SS, MacNamara J, Tahhan AS, Awad M, Yadalam A, Ko YA, Healy S, Hesaroieh I, Ahmed H, Gray B, Sher SS, Ghasemzadeh N, Patel R, Kim J, Waller EK, Quyyumi AA. Circulating Progenitor Cells Identify Peripheral Arterial Disease in Patients With Coronary Artery Disease. Circ Res 2016; 119:564-71. [PMID: 27267067 DOI: 10.1161/circresaha.116.308802] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 06/03/2016] [Indexed: 01/23/2023]
Abstract
RATIONALE Peripheral arterial disease (PAD) is a clinical manifestation of extracoronary atherosclerosis. Despite sharing the same risk factors, only 20% to 30% of patients with coronary artery disease (CAD) develop PAD. Decline in the number of bone marrow-derived circulating progenitor cells (PCs) is thought to contribute to the pathogenesis of atherosclerosis. Whether specific changes in PCs differentiate patients with both PAD and CAD from those with CAD alone is unknown. OBJECTIVE Determine whether differences exist in PCs counts of CAD patients with and without known PAD. METHODS AND RESULTS 1497 patients (mean age: 65 years; 62% men) with known CAD were identified in the Emory Cardiovascular Biobank. Presence of PAD (n=308) was determined by history, review of medical records, or imaging and was classified as carotid (53%), lower extremity (41%), upper extremity (3%), and aortic disease (33%). Circulating PCs were enumerated by flow cytometry. Patients with CAD and PAD had significantly lower PC counts compared with those with only CAD. In multivariable analysis, a 50% decrease in cluster of differentiation 34 (CD34+) or CD34+/vascular endothelial growth factor receptor-2 (VEGFR2+) counts was associated with a 31% (P=0.032) and 183% (P=0.002) increase in the odds of having PAD, respectively. CD34+ and CD34+/VEGFR2+ counts significantly improved risk prediction metrics for prevalent PAD. Low CD34+/VEGFR2+ counts were associated with a 1.40-fold (95% confidence interval, 1.03-1.91) and a 1.64-fold (95% confidence interval, 1.07-2.50) increases in the risk of mortality and PAD-related events, respectively. CONCLUSIONS PAD is associated with low CD34+ and CD34+/VEGFR2+ PC counts. Whether low PC counts are useful in screening for PAD needs to be investigated.
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Affiliation(s)
- Salim S Hayek
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - James MacNamara
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Ayman S Tahhan
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Mosaab Awad
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Adithya Yadalam
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Yi-An Ko
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Sean Healy
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Iraj Hesaroieh
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Hina Ahmed
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Brandon Gray
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Salman S Sher
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Nima Ghasemzadeh
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Riyaz Patel
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Jinhee Kim
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Edmund K Waller
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA
| | - Arshed A Quyyumi
- From the Division of Cardiology (S.S.H., M.A., A.Y., S.H., I.H., H.A., B.G., S.S.S., N.G., R.P., A.A.Q.) and Department of Internal Medicine, Emory University School of Medicine, Atlanta, GA (J.M., A.S.T.); and Department of Biostatistics and Bioinformatics (Y.-A.K.) and Department of Hematology and Oncology, Winship Cancer Institute (J.K., E.K.W.), Emory University, Atlanta, GA.
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Boppart MD, De Lisio M, Witkowski S. Exercise and Stem Cells. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2015; 135:423-56. [PMID: 26477925 DOI: 10.1016/bs.pmbts.2015.07.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Stem cells are traditionally studied in the context of embryonic development, yet studies confirm that a fraction remains in the adult organism for the purpose of daily remodeling and rejuvenation of multiple tissues following injury. Adult stem cells (ASCs) are found in close proximity to vessels and respond to tissue-specific cues in the microenvironment that dictate their fate and function. Exercise can dramatically alter strain sensing, extracellular matrix composition, and inflammation, and such changes in the niche likely alter ASC quantity and function postexercise. The field of stem cell biology is still in its infancy and identification and terminology of ASCs continues to evolve; thus, current information regarding exercise and stem cells is lacking. This chapter summarizes the literature that reports on the ASC response to acute exercise and exercise training, with particular emphasis on hematopoietic stem cells, endothelial progenitor cells, and mesenchymal stem cells.
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Affiliation(s)
- Marni D Boppart
- Department of Kinesiology and Community Health, University of Illinois, Urbana, Illinois, USA; Beckman Institute for Advanced Science and Technology, University of Illinois, Urbana, Illinois, USA.
| | - Michael De Lisio
- Department of Kinesiology and Community Health, University of Illinois, Urbana, Illinois, USA
| | - Sarah Witkowski
- Department of Kinesiology, School of Public Health and Health Sciences, University of Massachusetts, Amherst, Massachusetts, USA
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Spinetti G, Mangialardi G, Specchia C, Madeddu P. Enhancing Stem Cell Mobility: New Hope for Treatment of Cardiovascular Complications in Patients With Diabetes? Diabetes 2015. [PMID: 26207034 DOI: 10.2337/db15-0433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
| | | | - Claudia Specchia
- IRCCS MultiMedica, Milan, Italy University of Brescia, Brescia, Italy
| | - Paolo Madeddu
- Bristol Heart Institute, University of Bristol, Bristol, U.K.
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Fadini GP, Albiero M, Vigili de Kreutzenberg S, Avogaro A. Hypoglycemia affects the changes in endothelial progenitor cell levels during insulin therapy in type 2 diabetic patients. J Endocrinol Invest 2015; 38:733-8. [PMID: 25722222 DOI: 10.1007/s40618-015-0247-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 01/20/2015] [Indexed: 02/07/2023]
Abstract
PURPOSE Hypoglycemia is a barrier to the achievement of glycemic targets and limits the beneficial effects of improved glucose control on cardiovascular outcomes in type 2 diabetes (T2D). Circulating endothelial progenitor cells (EPCs) participate in cardiovascular homeostasis and predict future cardiovascular events. Therefore, we herein analyzed the association between occurrence of hypoglycemia and EPC changes in T2D patients after optimization of glucose control with basal insulin therapy. METHODS In the NCT00699686 trial, 42 T2D insulin-naïve patients received a 3 + 3-month cross-over therapy with glargine and detemir. There were 43 minor and 2 severe hypoglycemic episodes in 19 patients (45.2 %, 0.54 episodes/patient/year). Changes in EPCs were analyzed in relation to the occurrence of hypoglycemia during the trial. RESULTS Patients with hypoglycemia had a higher final HbA1c at 6 months than patients without, although absolute HbA1c changes were not significantly different. Though PCs increased at study end, in patients experiencing at least 1 hypoglycemic episode, the changes in CD34(+), CD133(+) progenitor cells and CD34(+)KDR(+) EPCs were significantly lower than the respective changes in patients without incident hypoglycemia, even after correcting for confounders. During treatment with detemir, which induced >twofold less hypoglycemia than glargine, CD34(+)KDR(+) EPCs increased significantly more than during treatment with glargine. CONCLUSIONS In naïve T2D patients initiating basal insulin, hypoglycemia prevents the increase in vasculoprotective PCs. Clinically, these data strengthen the importance of avoiding hypoglycemia to improve cardiovascular outcomes during the treatment of T2D.
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Affiliation(s)
- G P Fadini
- Department of Medicine, University of Padova, Via Giustiniani, 2, 35128, Padua, Italy.
| | - M Albiero
- Department of Medicine, University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
| | | | - A Avogaro
- Department of Medicine, University of Padova, Via Giustiniani, 2, 35128, Padua, Italy
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23
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Felice F, Di Stefano R, Pini S, Mazzotta G, Bovenzi FM, Bertoli D, Abelli M, Borelli L, Cardini A, Lari L, Gesi C, Michi P, Morrone D, Gnudi L, Balbarini A. Influence of depression and anxiety on circulating endothelial progenitor cells in patients with acute coronary syndromes. Hum Psychopharmacol 2015; 30:183-8. [PMID: 25784019 DOI: 10.1002/hup.2470] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 02/01/2015] [Accepted: 02/02/2015] [Indexed: 11/05/2022]
Abstract
OBJECTIVES Circulating endothelial progenitor cells (EPCs) are related to endothelial function and progression of coronary artery disease. There is evidence of decreased numbers of circulating EPCs in patients with a current episode of major depression. We investigated the relationships between the level of circulating EPCs and depression and anxiety in patients with acute coronary syndrome (ACS). METHODS Patients with ACS admitted to three Cardiology Intensive Care Units were evaluated by the SCID-I to determine the presence of lifetime and/or current mood and anxiety disorders according to DSM-IV criteria. The EPCs were defined as CD133(+) CD34(+) KDR(+) and evaluated by flow cytometry. All patients underwent standardized cardiological and psychopathological evaluations. Parametric and nonparametric statistical tests were performed where appropriate. RESULTS Out of 111 ACS patients, 57 were found to have a DSM-IV lifetime or current mood or anxiety disorder at the time of the inclusion in the study. The ACS group with mood or anxiety disorders showed a significant decrease in circulating EPC number compared with ACS patients without affective disorders. In addition, EPC levels correlated negatively with severity of depression and anxiety at index ACS episode. CONCLUSIONS The current study indicates that EPCs circulate in decreased numbers in ACS patients with depression or anxiety and, therefore, contribute to explore new perspectives in the pathophysiology of the association between cardiovascular disorders and affective disorders.
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Affiliation(s)
- Francesca Felice
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, Pisa, Italy
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24
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Martini G, Biscaro F, Boscaro E, Calabrese F, Lunardi F, Facco M, Agostini C, Zulian F, Fadini GP. Reduced levels of circulating progenitor cells in juvenile idiopathic arthritis are counteracted by anti TNF-α therapy. BMC Musculoskelet Disord 2015; 16:103. [PMID: 25925313 PMCID: PMC4418050 DOI: 10.1186/s12891-015-0555-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 04/16/2015] [Indexed: 02/07/2023] Open
Abstract
Background Endothelial progenitor cells (EPC) promote angiogenesis and vascular repair. Though reduced EPC levels have been shown in rheumatoid arthritis, no study has so far evaluated EPCs in children with juvenile idiopathic arthritis (JIA). We aimed to study circulating EPCs in children with JIA, their relation to disease activity, and effects of anti TNF-α treatment. Methods Circulating EPCs were quantified by flow cytometry based on CD34, CD133 and KDR expression in peripheral blood of 22 patients with oligoarticular JIA and 29 age-matched controls. EPCs were re-assessed in children with methotrexate-resistant oligo-extended JIA before and up to 12 month after initiation of anti-TNF-alpha therapy. Plasma concentrations of inflammatory and EPC-regulating factors were measured using a multiplex array. Confocal immunofluorescence was used to demonstrate EPCs in synovial tissues. Results Children with active JIA showed a significant reduction of relative and absolute counts of circulating progenitor cells and EPCs compared to age-matched healthy controls. CD34+ cell levels were modestly and inversely correlated to disease activity. A strong inverse correlation was found between serum TNF-α and EPC levels. In 8 patients treated with anti TNF-α agents, the number of EPCs rose to values similar to healthy controls. CD34+KDR+ EPCs were found in the synovial tissue of JIA children, but not in control. Conclusions Children with JIA have reduced levels of the vasculoprotective and proangiogenic EPCs. While EPCs may contribute to synovial tissue remodelling, EPC pauperization may indicate an excess cardiovascular risk if projected later in life.
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Affiliation(s)
- Giorgia Martini
- Paediatric Rheumatology Unit, Department of Paediatrics, 35128, Padova, Italy.
| | - Francesca Biscaro
- Paediatric Rheumatology Unit, Department of Paediatrics, 35128, Padova, Italy.
| | - Elisa Boscaro
- Department of Medicine, University of Padova, Via Giustiniani, 2, 35128, Padova, Italy.
| | - Fiorella Calabrese
- Department of Cardiovascular and Thoracic Sciences, University of Padova, Via Giustiniani, 2, 35128, Padova, Italy.
| | - Francesca Lunardi
- Department of Cardiovascular and Thoracic Sciences, University of Padova, Via Giustiniani, 2, 35128, Padova, Italy.
| | - Monica Facco
- Department of Medicine, University of Padova, Via Giustiniani, 2, 35128, Padova, Italy.
| | - Carlo Agostini
- Department of Medicine, University of Padova, Via Giustiniani, 2, 35128, Padova, Italy.
| | - Francesco Zulian
- Paediatric Rheumatology Unit, Department of Paediatrics, 35128, Padova, Italy.
| | - Gian Paolo Fadini
- Department of Medicine, University of Padova, Via Giustiniani, 2, 35128, Padova, Italy.
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Affiliation(s)
- Gian Paolo Fadini
- From the Department of Medicine, University of Padova, Padova, Italy; and Laboratory of Experimental Diabetology, Venetian Institute of Molecular Medicine, Padova, Italy
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26
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Fadini GP, Rigato M, Boscari F, Cappellari R, Menegazzo L, Pilutti C, Iori E, Marescotti M, Plebani M, Albiero M, Avogaro A. Short-term statin discontinuation increases endothelial progenitor cells without inflammatory rebound in type 2 diabetic patients. Vascul Pharmacol 2014; 67-69:21-9. [PMID: 25483979 DOI: 10.1016/j.vph.2014.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 10/24/2014] [Accepted: 11/15/2014] [Indexed: 11/24/2022]
Abstract
Type 2 diabetes (T2D) is characterized by impaired vascular regeneration owing to reduced endothelial progenitor cells (EPCs). While statins are known to increase EPCs, the effects of statin withdrawal on EPCs are unknown. Herein, we evaluated the effects of statin discontinuation on EPCs, inflammation and in vivo angiogenesis. Thirty-four T2D patients were randomized to 5-day discontinuation or continuation of statin treatment. At baseline and at day 5, we determined lipid profile, EPC levels, monocyte-macrophage polarization, and concentrations of hsCRP, VEGF, SDF-1α, and G-CSF. Angiogenesis by human circulating cells was assessed in vivo. At day 5, patients who stopped statins showed raised total and LDL cholesterol and EPCs compared to baseline, while no changes were observed in patients who continued statins. No changes were observed in hsCRP, VEGF, SDF-1α, G-CSF, M1 and M2 macrophages and classical, intermediate and nonclassical monocytes in both groups. In vivo angiogenesis by circulating cells was increased in patients who stopped statin treatment. In vitro, cholesterol supplementation stimulated mobilizing signals in human bone marrow mesenchymal stem cells. In conclusion, a brief statin withdrawal increases circulating EPCs and functional proangiogenic cells in T2D. These findings identify statin-sensitive pathways as reverse target mechanisms to stimulate vascular repair in diabetes.
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Affiliation(s)
- Gian Paolo Fadini
- Department of Medicine, University of Padova, Italy; Venetian Institute of Molecular Medicine, Padova, Italy.
| | - Mauro Rigato
- Department of Medicine, University of Padova, Italy
| | | | | | - Lisa Menegazzo
- Department of Medicine, University of Padova, Italy; Venetian Institute of Molecular Medicine, Padova, Italy
| | | | | | | | | | | | - Angelo Avogaro
- Department of Medicine, University of Padova, Italy; Venetian Institute of Molecular Medicine, Padova, Italy
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Difference in mobilization of progenitor cells after myocardial infarction in smoking versus non-smoking patients: insights from the BONAMI trial. Stem Cell Res Ther 2014; 4:152. [PMID: 24423369 PMCID: PMC4054959 DOI: 10.1186/scrt382] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 11/14/2013] [Accepted: 12/10/2013] [Indexed: 01/15/2023] Open
Abstract
Introduction Although autologous bone marrow cell (BMC) therapy has emerged as a promising treatment for acute myocardial infarction (AMI), trials reported mixed results. In the BONAMI trial, active smoking reduced cardiac function recovery after reperfused AMI. Therefore, we hypothesized that variability in the functionality of BMCs retrieved from patients with cardiovascular risk factors may partly explain these mixed results. We investigated the characteristics of progenitor cells in active smokers and non-smokers with AMI and their potential impact on BMC therapy efficacy. Methods Bone marrow and blood samples from 54 smoking and 47 non-smoking patients enrolled in the BONAMI cell therapy trial were analyzed. Results The white BMC and CD45dimCD34+ cell numbers were higher in active smokers (P = 0.001, P = 0.03, respectively). In marked contrast, either bone marrow or blood endothelial progenitor CD45dimCD34 + KDR + cells (EPCs) were decreased in active smokers (P = 0.005, P = 0.04, respectively). Importantly, a multivariate analysis including cardiovascular risk factors confirmed the association between active smoking and lower EPC number in bone marrow (P = 0.04) and blood (P = 0.04). Furthermore, baseline circulating EPC count predicted infarct size decrease at three months post-AMI in non-smokers (P = 0.01) but not in active smokers. Interestingly, baseline circulating EPCs were no longer predictive of cardiac function improvement in the BMC therapy group. Conclusions These data suggest that circulating EPCs play an important role in cardiac repair post-AMI only in non-smokers and that active smoking-associated EPC alterations may participate in the impairment of cardiac function recovery observed in smokers after AMI, an effect that was overridden by BMC therapy.
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Patel RS, Li Q, Ghasemzadeh N, Eapen DJ, Moss LD, Janjua AU, Manocha P, Kassem HA, Veledar E, Samady H, Taylor WR, Zafari AM, Sperling L, Vaccarino V, Waller EK, Quyyumi AA. Circulating CD34+ progenitor cells and risk of mortality in a population with coronary artery disease. Circ Res 2014; 116:289-297. [PMID: 25323857 DOI: 10.1161/circresaha.116.304187] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
RATIONALE Low circulating progenitor cell numbers and activity may reflect impaired intrinsic regenerative/reparative potential, but it remains uncertain whether this translates into a worse prognosis. OBJECTIVES To investigate whether low numbers of progenitor cells associate with a greater risk of mortality in a population at high cardiovascular risk. METHODS AND RESULTS Patients undergoing coronary angiography were recruited into 2 cohorts (1, n=502 and 2, n=403) over separate time periods. Progenitor cells were enumerated by flow cytometry as CD45(med+) blood mononuclear cells expressing CD34, with additional quantification of subsets coexpressing CD133, vascular endothelial growth factor receptor 2, and chemokine (C-X-C motif) receptor 4. Coefficient of variation for CD34 cells was 2.9% and 4.8%, 21.6% and 6.5% for the respective subsets. Each cohort was followed for a mean of 2.7 and 1.2 years, respectively, for the primary end point of all-cause death. There was an inverse association between CD34(+) and CD34(+)/CD133(+) cell counts and risk of death in cohort 1 (β=-0.92, P=0.043 and β=-1.64, P=0.019, respectively) that was confirmed in cohort 2 (β=-1.25, P=0.020 and β=-1.81, P=0.015, respectively). Covariate-adjusted hazard ratios in the pooled cohort (n=905) were 3.54 (1.67-7.50) and 2.46 (1.18-5.13), respectively. CD34(+)/CD133(+) cell counts improved risk prediction metrics beyond standard risk factors. CONCLUSIONS Reduced circulating progenitor cell counts, identified primarily as CD34(+) mononuclear cells or its subset expressing CD133, are associated with risk of death in individuals with coronary artery disease, suggesting that impaired endogenous regenerative capacity is associated with increased mortality. These findings have implications for biological understanding, risk prediction, and cell selection for cell-based therapies.
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Affiliation(s)
- Riyaz S Patel
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA.,Institute of Cardiovascular Sciences, University College London, London, UK
| | - Qunna Li
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Nima Ghasemzadeh
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Danny J Eapen
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Lauren D Moss
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - A Umair Janjua
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Pankaj Manocha
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Hatem Al Kassem
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Emir Veledar
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA.,Dept of Medicine, Baptist Health South Florida, Florida, USA
| | - Habib Samady
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - W Robert Taylor
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - A Maziar Zafari
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA.,Dept of Medicine, Baptist Health South Florida, Florida, USA.,Dept. of Medicine, Atlanta Veterans Affairs Medical Center, Decatur, GA, USA
| | - Laurence Sperling
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Viola Vaccarino
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA.,Dept. of Medicine, Atlanta Veterans Affairs Medical Center, Decatur, GA, USA
| | - Edmund K Waller
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Arshed A Quyyumi
- Dept. of Medicine, Emory University School of Medicine, Atlanta, GA, USA
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Abstract
Cardiovascular morbidity imposes a high degree of disability and mortality, with limited therapeutic options available in end-stage disease. Integral to standard of care, cardiac rehabilitation aims on improving quality-of-life and prolonging survival. The recent advent of regenerative technologies paves the way for a transformative era in rehabilitation medicine whereby, beyond controlling risk factors and disease progression, the prospect of curative solutions is increasingly tangible. To date, the spectrum of clinical experience in cardiac regenerative medicine relies on stem cell-based therapies delivered to the diseased myocardium either acutely/subacutely, after a coronary event, or in the setting of chronic heart failure. Application of autologous/allogeneic stem cell platforms has established safety and feasibility, with encouraging signals of efficacy. Newer protocols aim to purify cell populations in an attempt to eliminate nonregenerative and enrich for regenerative cell types before use. Most advanced technologies have been developed to isolate resident cell populations directly from the heart or, alternatively, condition cells from noncardiac sources to attain a disease-targeted lineage-specified phenotype for optimized outcome. Because a multiplicity of cell-based technologies has undergone phase I/II evaluation, pivotal trials are currently underway in larger patient populations. Translation of regenerative principles into clinical practice will increasingly involve rehabilitation providers across the continuum of patient care. Regenerative rehabilitation is thus an emerging multidisciplinary field, full of opportunities and ready to be explored.
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Berezin AE, Kremzer AA, Samura TA, Berezina TA, Martovitskaya YV. Serum uric Acid predicts declining of circulating proangiogenic mononuclear progenitor cells in chronic heart failure patients. J Cardiovasc Thorac Res 2014; 6:153-62. [PMID: 25320662 PMCID: PMC4195965 DOI: 10.15171/jcvtr.2014.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 09/03/2014] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION Serum uric acid (SUA) is considered a marker for natural progression of chronic heart failure (CHF) mediated cardiovascular remodelling. CHF associates with declining of circulating mononuclear progenitor cells (MPCs). The objective of this study was to evaluate the interrelationship between SUA concentrations and proangiogenic MPCs in ischemic CHF patients. METHODS The study population was structured retrospectively after determining the coronary artery disease (CAD) by contrast-enhanced spiral computed tomography angiography in 126 subjects with symptomatic ischemic mild-to-severe CHF and 128 CAD subjects without CHF. Baseline biomarkers were measured in all patients. Cox proportional multivariate hazard ratio was calculated for predictors of MPCs declining in both CHF and non-CHF patient population predictors of MPCs declining in CHF subjects were examined in stepwise logistic regression. C-statistics, integrated discrimination indices (IDI) and net-reclassification improvement were utilized for prediction performance analyses. RESULTS Cox proportional adjusted hazard ratio analyses for CD14(+)CD309(+) and CD14(+)CD309(+)Tie2(+) MPCs by SUA has shown that the higher quartiles (Q3 and Q4) of SUA compared to the lower quartiles (Q1 and Q2) are associated with increased risks of depletion of both CD14(+)CD309(+) and CD14(+)CD309(+)Tie2(+) MPCs. The addition of Q4 SUA to the ABC model improved the relative IDI by 13.8% for depletion of CD14(+)CD309(+) MPCs and by 14.5% for depletion of CD14(+)CD309(+)Tie2(+) MPCs. CONCLUSION Circulating levels of proangiogenic MPCs are declined progressively depending on the levels of SUA in the HF subjects with CHF. We suggest that even mild elevations of SUA might be used to predict of relative depletion of proangiogenic MPCs among chronic HF patients.
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Affiliation(s)
| | - Alexander A Kremzer
- State Medical University, Clinical Pharmacology Department, Zaporozhye, Ukraine
| | - Tatyana A Samura
- State Medical University, Clinical Pharmacology Department, Zaporozhye, Ukraine
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Berezin AE, Kremzer AA. Relationship between circulating endothelial progenitor cells and insulin resistance in non-diabetic patients with ischemic chronic heart failure. Diabetes Metab Syndr 2014; 8:138-144. [PMID: 25082501 DOI: 10.1016/j.dsx.2014.07.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AIM The objective of this study was to assess a relationship between insulin resistance (IR) and counts of CD45(-)CD34(+), CD14(+)CD309(+), and CD14(+)CD309(+)Tie2(+) phenotyped circulating endothelial progenitor cells (EPCs) in patients with ischemic chronic heart failure (CHF). METHODS The study involved 300 CHF patients (186 males) aged 48-62 years with angiografically proven coronary artery disease and/or previously defined myocardial infarction. Insulin resistance was assessed by the homeostasis model assessment for insulin resistance (HOMA-IR). EPC populations were phenotyped by flow cytofluorimetry. RESULTS Circulating EPCs counts were statistically significantly lower in CHF patients with IR than in patients without IR. We found that the most valuable multivariable predictors of the depletion of the CD45(+)CD34(+) EPCs were NT-pro-brain natriuretic peptide (BNP) (1.32; 95% CI=1.19-2.77; P=0.001), left ventricular ejection fraction (OR=1.30; 95% CI=1.09-1.60; P=0.002), NYHA class (OR=1.12; 95% CI=1.02-1.19; P=0.001). NT-pro-BNP (OR=1.45; 95% CI=1.15-2.90; P=0.003), left ventricular ejection fraction (OR=1.32; 95% CI=1.11-1.65; P=0.001) were found as powerful predictors for depletion in CD45(-)CD34(+) EPCs. We also identified six independent variables with high predictive value for depletion of CD14(+)CD309(+) EPCs: NT-pro-BNP (OR=1.41; 95% CI=1.15-2.90; P=0.003), left ventricular ejection fraction (OR=1.18; 95% CI=1.10-1.76; P=0.036), NYHA class (OR=1.15; 95% CI=1.07-1.22; P=0.001), hs-C reactive protein (OR=1.02; 95% CI=1.01-1.05; P=0.012). As independent multivariable predictors for depletion in CD14(+)CD309(+)Tie2(+) EPCs were selected five variables: NT-pro-BNP (OR=1.65; 95% CI=1.44-4.70; P=0.006), left ventricular ejection fraction (OR=1.07; 95% CI=1.02-1.12; P=0.018), NYHA class (OR=1.13; 95% CI=1.06-1.21; P=0.001), hs-C-reactive protein (OR=1.08; 95% CI=1.03-1.16; P=0.002). CONCLUSION IR may be an additional factor contributing decreased circulating level of proangiogenic EPCs in non-diabetic CHF patients.
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Affiliation(s)
- Alexander E Berezin
- State Medical University, Internal Medicine Department, Zaporozhye, Ukraine.
| | - Alexander A Kremzer
- State Medical University, Clinical Pharmacology Department, Zaporozhye, Ukraine
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Spinetti G, Specchia C, Fortunato O, Sangalli E, Clerici G, Caminiti M, Airoldi F, Losa S, Emanueli C, Faglia E, Madeddu P. Migratory activity of circulating mononuclear cells is associated with cardiovascular mortality in type 2 diabetic patients with critical limb ischemia. Diabetes Care 2014; 37:1410-7. [PMID: 24574344 DOI: 10.2337/dc13-2084] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Prediction of clinical outcome in diabetic patients with critical limb ischemia (CLI) is unsatisfactory. This prospective study investigates if the abundance and migratory activity of a subpopulation of circulating mononuclear cells, namely, CD45(dim)CD34(pos)CXCR4(pos)KDR(pos) cells, predict major amputation and cardiovascular death in type 2 diabetic patients undergoing percutaneous transluminal angioplasty for CLI. RESEARCH DESIGN AND METHODS A consecutive series of 119 type 2 diabetic patients with CLI was enrolled. CD45(dim)CD34(pos)CXCR4(pos)KDR(pos) cells were assessed by flow cytometry upon isolation and also after spontaneous or stromal cell-derived factor 1α-directed migration in an in vitro assay. The association between basal cell counts and migratory activity and the risk of an event at 18-month follow-up was evaluated in a multivariable regression analysis. RESULTS Time-to-event analysis of amputation (n = 13) showed no association with the candidate predictors. Sixteen cardiovascular deaths occurred during 18 months of follow-up. Abundance of CD45(dim)CD34(pos)CXCR4(pos)KDR(pos) cells was not associated with cardiovascular mortality. Interestingly, in vitro migration of CD45(dim)CD34(pos)CXCR4(pos)KDR(pos) cells was higher in patients with cardiovascular death compared with event-free subjects (percentage of migrated cells median value and interquartile range, 0.03 [0.02-0.07] vs. 0.01 [0.01-0.03]; P = 0.0095). Multivariable regression model analysis showed that cell migration forecasts cardiovascular mortality independently of other validated predictors, such as age, diagnosed coronary artery disease, serum C-reactive protein, and estimated glomerular filtration rate. In this model, doubling of migrated cell counts increases the cardiovascular death hazard by 100% (P < 0.0001). CONCLUSIONS The new predictor could aid in the identification of high-risk patients with type 2 diabetes requiring special diagnostic and therapeutic care after revascularization.
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Renal denervation rapidly restores circulating proangiogenic hematopoietic cells in patients affected by drug-resistant hypertension. Int J Cardiol 2014; 173:591-2. [PMID: 24698255 DOI: 10.1016/j.ijcard.2014.03.100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 03/14/2014] [Indexed: 01/19/2023]
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Berezin AE, Kremzer AA. Circulating endothelial progenitor cells as markers for severity of ischemic chronic heart failure. J Card Fail 2014; 20:438-47. [PMID: 24594088 DOI: 10.1016/j.cardfail.2014.02.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 02/21/2014] [Accepted: 02/24/2014] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Despite a high potential of endothelial progenitor cells (EPCs) for diagnostic purposes, the EPC role in developing ischemic chronic heart failure (CHF) has not been determined obviously. The objective of this study was to assess the counts of CD45(+)CD34(+), CD45(-)CD34(+), CD14(+)CD309(+), and CD14(+)CD309(+)Tie2(+) phenotyped circulating EPCs of various subpopulations in patients with ischemic CHF. METHODS AND RESULTS The study involved 153 patients (86 male), aged 48-62 years, with angiographically proven coronary artery disease (CAD) and 25 healthy volunteers. CHF was diagnosed in 109 patients (71.2%). Mononuclear cell populations were phenotyped by flow cytofluorimetry. Cardiovascular risk factors, such as type 2 diabetes mellitus, hyperlipidemia, arterial hypertension, and adherence to smoking, may have a negative effect on circulating EPC counts in CAD patients regardless of the presence of CHF. The depletion of the CD14(+)CD309(+)- and CD14(+)CD309(+)Tie2(+)-phenotyped circulating EPC counts is associated with the severity of left ventricular dysfunction, whereas the CD45(+)CD34(+)- and CD45(-)CD34(+)-mononuclear cell counts are more representative of the severity of atherosclerotic coronary artery lesions. CONCLUSION The authors found that New York Heart Association functional class of CHF, left ventricular ejection fraction <42%, the N-terminal pro-B-type natriuretic peptide level >554 pg/mL, and Е/Еm ratio >15 U had the highest predictive value for the depletion of the EPC count in CAD patients.
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Affiliation(s)
- Alexander E Berezin
- Internal Medicine Department, State Medical University, Zaporozhye, Ukraine.
| | - Alexander A Kremzer
- Clinical Pharmacology Department, State Medical University, Zaporozhye, Ukraine
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Circulating progenitor cells in hypertensive patients with different degrees of cardiovascular involvement. J Hum Hypertens 2014; 28:543-50. [PMID: 24553637 DOI: 10.1038/jhh.2014.7] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 12/13/2013] [Accepted: 12/26/2013] [Indexed: 01/05/2023]
Abstract
We investigated whether different degrees of hypertension-related cardiovascular involvement are associated with changes in circulating proangiogenic hematopoietic cell (PHC) numbers and/or phenotypes and/or in the PHC redox system in hypertensive individuals with isolated arterial stiffening (AS) hypertensives or with both carotid intima-media thickening and left ventricular hypertrophy (LVH) hypertensives. We also evaluated microRNA (miRs) 221 and 222 (miRs221/222) expression in CD34+ cells, the relationship between these miRs and cell number and reactive oxygen species (ROS) levels, and the expression of manganese superoxide dismutase (MnSOD), catalase (CAT) glutathione peroxidase type-1 (GPx-1) and gp91phox-containing nicotinamide-adenine-dinucleotide-phosphate-oxidase (NOX2). Proangiogenic hematopoietic cells (PHCs) from hypertensive patients and controls were isolated by flow cytometry. PHCs were higher in hypertensives than in controls but were lower in LVH than in AS hypertensives. In CD34+ cells from AS hypertensives, NOX2, MnSOD, CAT and GPx-1 were overexpressed; ROS, miRs and NOX2 were also increased and were associated with cell number. In LVH, we found an imbalance in the cell redox system; MnSOD showed the highest values, whereas CAT and GPx-1 were lower than in AS hypertensives. Intracellular ROS, miRs and NOX2 were higher and inversely associated with cell number. In AS hypertensives, the redox balance may sustain the increase in PHCs; by contrast, in hypertensives with more advanced lesions, redox imbalance may result in increased oxidative stress and cell reduction.
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António N, Soares A, Carvalheiro T, Fernandes R, Paiva A, Ventura M, Cristóvão J, Elvas L, Gonçalves L, Providência LA, Ribeiro CF, Pego GM. Circulating endothelial progenitor cells as a predictor of response to cardiac resynchronization therapy: the missing piece of the puzzle? PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2014; 37:731-9. [PMID: 24383551 DOI: 10.1111/pace.12334] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 11/08/2013] [Accepted: 11/13/2013] [Indexed: 01/07/2023]
Abstract
BACKGROUND It would be important to better identify heart failure (HF) patients most likely to respond to cardiac resynchronization therapy (CRT). Because endothelial progenitor cells (EPCs) play a crucial role in the maintenance of vascular endothelium integrity, we hypothesize that patients who have higher circulating EPCs levels have greater neovascularization potential and are more prone to be responders to CRT. METHODS Prospective study of 30 consecutive patients, scheduled for CRT. Echocardiographic evaluation was performed before implant and 6 months after. Responders to CRT were defined as patients who were still alive, have not been hospitalized for HF management, and demonstrated ≥15% reduction in left ventricular end-systolic volume (LVESV) at the 6-month follow-up. EPCs were quantified before CRT, from peripheral blood, by flow cytometry using five different conjugated antibodies: anti-CD34, anti-KDR, anti-CD133, anti-CD45, and anti-CXCR4. We quantified five different populations of angiogenic cells: CD133(+) /CD34(+) cells, CD133(+) /KDR(+) cells, CD133(+) /CD34(+) /KDR(+) cells, CD45(dim) CD34(+) /KDR(+) cells, and CD45(dim) CD34(+) /KDR(+) /CXCR4(+) cells. RESULTS The proportion of responders to CRT at the 6-month follow-up was 46.7%. Responders to CRT presented higher baseline EPCs levels than nonresponders (0.0003 ± 0.0006% vs 0.0001 ± 0.0002%, P = 0.04, for CD34(+) /CD133(+) /KDR(+) and 0.0006 ± 0.0005% vs 0.0003 ± 0.0003%, P = 0.009, for CD45(dim) CD34(+) /KDR(+) /CXCR4(+) cells). In addition, baseline levels of CD45(dim) CD34(+) /KDR(+) /CXCR4(+) cells were positively correlated with the reduction of LVESV verified 6 months after CRT (r = 0.497, P = 0.008). CONCLUSIONS High circulating EPCs levels may identify the subset of HF patients who are more likely to undergo reverse remodeling and benefit from CRT. Addition of EPCs levels assessment to current selection criteria may improve the ability to predict CRT response.
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Affiliation(s)
- Natália António
- Cardiology Department, Coimbra Hospital and University Center, Coimbra, Portugal; Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences, Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Fadini GP. A reappraisal of the role of circulating (progenitor) cells in the pathobiology of diabetic complications. Diabetologia 2014; 57:4-15. [PMID: 24173366 DOI: 10.1007/s00125-013-3087-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 10/01/2013] [Indexed: 01/10/2023]
Abstract
Traditionally, the development of diabetic complications has been attributed to the biochemical pathways driving hyperglycaemic cell damage, while reparatory mechanisms have been long overlooked. A more comprehensive view of the balance between damage and repair suggests that an impaired regenerative capacity of bone marrow (BM)-derived cells strongly contributes to defective re-endothelisation and neoangiogenesis in diabetes. Although recent technological advances have redefined the biology and function of endothelial progenitor cells (EPCs), interest in BM-derived vasculotropic cells in the setting of diabetes and its complications remains high. Several circulating cell types of haematopoietic and non-haematopoietic origin are affected by diabetes and are potentially involved in the pathobiology of chronic complications. In addition to classical EPCs, these include circulating (pro-)angiogenic cells, polarised monocytes/macrophages (M1 and M2), myeloid calcifying cells and smooth muscle progenitor cells, having disparate roles in vascular biology. In parallel with the study of elusive progenitor cell phenotypes, it has been recognised that diabetes induces a profound remodelling of the BM stem cell niche. The alteration of circulating (progenitor) cells in the BM is now believed to be the link among distant end-organ complications. The field is rapidly evolving and interest is shifting from specific cell populations to the complex network of interactions that orchestrate trafficking of circulating vasculotropic cells.
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Affiliation(s)
- G P Fadini
- Department of Medicine, University Hospital of Padova, University of Padova, Via Giustiniani, 2, 35100, Padova, Italy,
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Fadini GP, Avogaro A. Diabetes impairs mobilization of stem cells for the treatment of cardiovascular disease. Int J Cardiol 2013. [DOI: 10.1016/j.ijcard.2012.10.089] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Effect of conversion from ciclosporin to tacrolimus on endothelial progenitor cells in stable long-term kidney transplant recipients. Transplantation 2013; 95:1338-45. [PMID: 23594858 DOI: 10.1097/tp.0b013e31828fabb3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Endothelial progenitor cell (EPC) counts are proposed surrogate markers for vascular function and cardiovascular risk. The effect of tacrolimus (TAC) on EPC is unknown. METHODS In this randomized controlled trial, we assigned 148 stable long-term kidney transplant recipients (KTR) to maintaining ciclosporin (CSA) or to commencing TAC-based immunosuppression at a 2:1 ratio. EPC counts (CD34/KDR) after 24 months were defined as primary endpoint. RESULTS The intent-to-treat analysis included 141 KTR (estimated glomerular filtration rate, 46.7 [40.1-61.8] mL/min per 1.73 m). Median (interquartile range [IQR]) EPC counts at baseline and month 24 were 6 (2-9) and 3 (1-9) cells and 4 (2-8) and 2 (0-5) cells per 5×10 mononuclear cells in CSA and TAC, respectively. Median (IQR) circulating angiogenic cells at baseline and month 24 were 28 (10.7-57) and 44.33 (14.6-59.8) cells and 22 (10.8-41) and 21 (9.7-49.5) cells per high-power field in CSA and TAC, respectively. Median (IQR) endothelial cell colony-forming units count per well at baseline and month 24 were 10.5 (3.3-34.3) and 4.38 (1.7-26.5) in CSA and significantly declined from 9.31 (1.8-29.3) to 4.13 (1.1-9.5) in TAC (P=0.003). There were no cardiovascular events in either group. CONCLUSION Although late conversion from CSA to TAC appears safe in KTR, conversion to TAC has no favorable effect on EPC. Low EPC levels are associated with a higher risk of subsequent cardiovascular events and are therefore of prognostic value. Their trend to decline over time deserves further examination.
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Fortunato O, Spinetti G, Specchia C, Cangiano E, Valgimigli M, Madeddu P. Migratory activity of circulating progenitor cells and serum SDF-1α predict adverse events in patients with myocardial infarction. Cardiovasc Res 2013; 100:192-200. [DOI: 10.1093/cvr/cvt153] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Van Spyk EN, Chun KC, Samadzadeh KM, Peters JH, Lee ES. Increased levels of CD34+ cells are associated in patients with abdominal aortic aneurysms compared with patients with peripheral vascular disease. J Surg Res 2013; 184:638-43. [PMID: 23680469 DOI: 10.1016/j.jss.2013.03.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 03/14/2013] [Accepted: 03/20/2013] [Indexed: 01/24/2023]
Abstract
BACKGROUND Circulating progenitor cells are integral to vascular health and effectively predict vascular reactivity. CD34 is a known marker of circulating progenitor cells. Few studies have examined the role of CD34+ cells in abdominal aortic aneurysm (AAA) disease and peripheral vascular disease (PVD). The aim of this study was to compare the percentage of CD34+ cells between patients with AAA versus PVD. MATERIALS AND METHODS We collected peripheral whole blood from AAA or PVD patients. The blood was stained with fluorescently labeled antibodies against CD34 or isotype controls. We collected data using a flow cytometer and analyzed them. We also recorded risk factors such as hypertension, diabetes, total cholesterol, serum white blood cells, serum creatinine, body mass index, blood pressure, statin use, current smoking status, coronary artery disease, cerebral vascular accident, and chronic obstructive pulmonary disease. RESULTS We enrolled 24 patients in this study (AAA, n = 12; PVD, n = 12). The AAA patients had a greater percentage of CD34+ cells compared with PVD patients. (r = 0.84; P = 0.016). There were no significant risk factors differences between AAA and PVD patients. CONCLUSIONS Based on CD34+ cell counts, AAA is a less severe vascular disease than PVD. Whether CD34+ cells can serve as a biomarker for risk stratification or a potential therapy warrants further study.
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Affiliation(s)
- Elyse N Van Spyk
- Department of Surgery, Sacramento VA Medical Center, Mather, California, USA
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den Dekker WK, Houtgraaf JH, Rowland SM, Ligtenberg E, de Boer SPM, de Jong R, de Winter RJ, den Heijer P, Zijlstra F, Serruys PW, Cheng C, Duckers HJ. Efficiency of statin treatment on EPC recruitment depends on baseline EPC titer and does not improve angiographic outcome in coronary artery disease patients treated with the Genous stent. Cell Transplant 2013; 23:1525-35. [PMID: 23561893 DOI: 10.3727/096368913x664874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The objective of this study was to assess the effect of high-dose atorvastatin treatment on endothelial progenitor cell (EPC) recruitment and angiographic and clinical outcome in coronary artery disease (CAD) patients treated with the Genous EPC-capturing stent. The HEALING IIB study was a multicenter, open-label, prospective trial that enrolled 100 patients. Patients were started on 80 mg atorvastatin qd, at least 2 weeks before the index procedure and continued for at least 4 weeks after the index procedure. Eighty-seven patients were included in this analysis. EPC levels significantly increased as early as 2 weeks after the start of atorvastatin. Remarkably, among this group, 31 patients proved to be nonresponders to atorvastatin treatment (i.e., no increase in EPC levels), while 56 patients were responders (i.e., rise in EPC count between week -2 and 0). Compared to responders, nonresponders had a significantly higher baseline EPC count (76 ± 10 vs. 41 ± 5, p < 0.01) with a lower late luminal loss (LLL) at 6- and 18-month follow-up (FU) (0.61 ± 0.07 vs. 0.88 ± 0.08, p < 0.05, and 0.50 ± 0.08 vs. 0.82 ± 0.08, p < 0.01 respectively). Furthermore, baseline EPC count was inversely correlated with LLL at 6-month FU (R = -0.42, p < 0.001). Patients with a higher EPC count at baseline showed no increase in EPC recruitment in response to statin treatment but had favorable LLL at 6- and 18-month FU, whereas patients with lower EPC count were responsive to statin therapy, but EPCs might be less functional as they had higher LLL at 6- and 18-month FU. These data imply that although statin treatment can enhance EPC titer in patients with low baseline levels, there is no indication for a possible beneficial clinical effect with EPC capture stents.
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Affiliation(s)
- Wijnand K den Dekker
- Thoraxcenter Rotterdam, Erasmus University Medical Center, Rotterdam, The Netherlands
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Fadini GP, Albiero M, Vigili de Kreutzenberg S, Boscaro E, Cappellari R, Marescotti M, Poncina N, Agostini C, Avogaro A. Diabetes impairs stem cell and proangiogenic cell mobilization in humans. Diabetes Care 2013; 36:943-9. [PMID: 23111057 PMCID: PMC3609511 DOI: 10.2337/dc12-1084] [Citation(s) in RCA: 134] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Diabetes mellitus (DM) increases cardiovascular risk, at least in part, through shortage of vascular regenerative cells derived from the bone marrow (BM). In experimental models, DM causes morphological and functional BM alterations, but information on BM function in human DM is missing. Herein, we sought to assay mobilization of stem and proangiogenic cells in subjects with and without DM. RESEARCH DESIGN AND METHODS In a prospective trial (NCT01102699), we tested BM responsiveness to 5 μg/kg human recombinant granulocyte colony-stimulating factor (hrG-CSF) in 24 individuals with DM (10 type 1 and 14 type 2) and 14 individuals without DM. Before and 24 h after hrG-CSF, we quantified circulating stem/progenitor cells and total and differential white blood cell counts. We also evaluated in vivo the proangiogenic capacity of peripheral blood mononuclear cells using the Matrigel plug assay. RESULTS In response to hrG-CSF, levels of CD34(+) cells and other progenitor cell phenotypes increased in subjects without DM. Patients with DM had significantly impaired mobilization of CD34(+), CD133(+), and CD34(+)CD133(+) hematopoietic stem cells and CD133(+)KDR(+) endothelial progenitors, independently of potential confounders. The in vivo angiogenic capacity of peripheral blood mononuclear cells significantly increased after hrG-CSF in control subjects without DM, but not in patients with DM. DM was also associated with the inability to upregulate CD26/DPP-4 on CD34(+) cells, which is required for the mobilizing effect of granulocyte colony-stimulating factor. CONCLUSIONS Stem and proangiogenic cell mobilization in response to hrG-CSF is impaired in DM, possibly because of maladaptive CD26/DPP-4 regulation. These alterations may hamper tissue repair and favor the development of cardiovascular complications.
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Urao N, Ushio-Fukai M. Redox regulation of stem/progenitor cells and bone marrow niche. Free Radic Biol Med 2013; 54:26-39. [PMID: 23085514 PMCID: PMC3637653 DOI: 10.1016/j.freeradbiomed.2012.10.532] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 10/02/2012] [Accepted: 10/05/2012] [Indexed: 01/19/2023]
Abstract
Bone marrow (BM)-derived stem and progenitor cell functions including self-renewal, differentiation, survival, migration, proliferation, and mobilization are regulated by unique cell-intrinsic and -extrinsic signals provided by their microenvironment, also termed the "niche." Reactive oxygen species (ROS), especially hydrogen peroxide (H(2)O(2)), play important roles in regulating stem and progenitor cell functions in various physiologic and pathologic responses. The low level of H(2)O(2) in quiescent hematopoietic stem cells (HSCs) contributes to maintaining their "stemness," whereas a higher level of H(2)O(2) within HSCs or their niche promotes differentiation, proliferation, migration, and survival of HSCs or stem/progenitor cells. Major sources of ROS are NADPH oxidase and mitochondria. In response to ischemic injury, ROS derived from NADPH oxidase are increased in the BM microenvironment, which is required for hypoxia and hypoxia-inducible factor-1α expression and expansion throughout the BM. This, in turn, promotes progenitor cell expansion and mobilization from BM, leading to reparative neovascularization and tissue repair. In pathophysiological states such as aging, atherosclerosis, heart failure, hypertension, and diabetes, excess amounts of ROS create an inflammatory and oxidative microenvironment, which induces cell damage and apoptosis of stem and progenitor cells. Understanding the molecular mechanisms of how ROS regulate the functions of stem and progenitor cells and their niche in physiological and pathological conditions will lead to the development of novel therapeutic strategies.
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Affiliation(s)
- Norifumi Urao
- Department of Pharmacology, Center for Lung and Vascular Biology, Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL 60612, USA
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Spinetti G, Cordella D, Fortunato O, Sangalli E, Losa S, Gotti A, Carnelli F, Rosa F, Riboldi S, Sessa F, Avolio E, Beltrami AP, Emanueli C, Madeddu P. Global remodeling of the vascular stem cell niche in bone marrow of diabetic patients: implication of the microRNA-155/FOXO3a signaling pathway. Circ Res 2012; 112:510-22. [PMID: 23250986 DOI: 10.1161/circresaha.112.300598] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
RATIONALE The impact of diabetes mellitus on bone marrow (BM) structure is incompletely understood. OBJECTIVE Investigate the effect of type-2 diabetes mellitus (T2DM) on BM microvascular and hematopoietic cell composition in patients without vascular complications. METHODS AND RESULTS Bone samples were obtained from T2DM patients and nondiabetic controls (C) during hip replacement surgery and from T2DM patients undergoing amputation for critical limb ischemia. BM composition was assessed by histomorphometry, immunostaining, and flow cytometry. Expressional studies were performed on CD34(pos) immunosorted BM progenitor cells (PCs). Diabetes mellitus causes a reduction of hematopoietic tissue, fat deposition, and microvascular rarefaction, especially when associated with critical limb ischemia. Immunohistochemistry documented increased apoptosis and reduced abundance of CD34(pos)-PCs in diabetic groups. Likewise, flow cytometry showed scarcity of BM PCs in T2DM and T2DM+critical limb ischemia compared with C, but similar levels of mature hematopoietic cells. Activation of apoptosis in CD34(pos)-PCs was associated with upregulation and nuclear localization of the proapoptotic factor FOXO3a and induction of FOXO3a targets, p21 and p27(kip1). Moreover, microRNA-155, which regulates cell survival through inhibition of FOXO3a, was downregulated in diabetic CD34(pos)-PCs and inversely correlated with FOXO3a levels. The effect of diabetes mellitus on anatomic and molecular end points was confirmed when considering background covariates. Furthermore, exposure of healthy CD34(pos)-PCs to high glucose reproduced the transcriptional changes induced by diabetes mellitus, with this effect being reversed by forced expression of microRNA-155. CONCLUSIONS We provide new anatomic and molecular evidence for the damaging effect of diabetes mellitus on human BM, comprising microvascular rarefaction and shortage of PCs attributable to activation of proapoptotic pathway.
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Affiliation(s)
- Gaia Spinetti
- Laboratories of Experimental Cardiovascular Medicine, University of Bristol, Bristol, United Kingdom
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TransFix® for delayed flow cytometry of endothelial progenitor cells and angiogenic T cells. Microvasc Res 2012; 84:384-6. [DOI: 10.1016/j.mvr.2012.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 08/28/2012] [Indexed: 11/19/2022]
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Costiniuk CT, Hibbert BM, Filion LG, O'Brien ER, Angel JB. Reply to: Cardiovascular Disease Risk in HIV Infection and Endothelial Progenitor Cells. J Infect Dis 2012. [DOI: 10.1093/infdis/jis519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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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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Villalvilla A, Moro M, Arruza L, Redondo S, Fernández-Cruz A, Fernández-Durango R. Circulating endothelial progenitor cells are reduced in rat oxygen-induced retinopathy despite a retinal SDF-1/CXCR4 and VEGF proangiogenic response. Life Sci 2012; 91:264-70. [PMID: 22884805 DOI: 10.1016/j.lfs.2012.07.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 06/04/2012] [Accepted: 07/11/2012] [Indexed: 01/09/2023]
Abstract
AIMS The purpose of this study is to investigate circulating endothelial progenitor cells (EPCs) and the signaling pathways involved in their recruitment in the ischemic retina of the 50/10 rat model of oxygen-induced retinopathy (OIR). MAIN METHODS Within 12h after birth, litters of Sprague-Dawley rats and their mothers were exposed to alternating oxygen concentrations, followed by a room air exposition, to induce OIR. Retinopathy was quantified by ADPase stain in flat-mounted retinas and pre-ILM nuclei count in retinal sections. Semiquantitative real-time PCR and immunofluorescence were assessed in retinas to study stromal cell-derived factor 1 (SDF-1), its receptor CXCR4 and vascular endothelial growth factor (VEGF) expression. Circulating EPCs were evaluated by flow cytometry in peripheral blood. KEY FINDINGS Our results showed increased immunolabelling of SDF-1 in endothelial cells and strong expression of CXCR4 in Müller cells in OIR retinas as compared to control retinas. We found increased levels of CXCR4 and VEGF mRNA in OIR retinas, especially during the vascular attenuation stage. The number of circulating EPCs was decreased in OIR rats as compared to control rats. SIGNIFICANCE The decrease in circulating EPCs could be implied in vessel growth arrest during normal retinal development in OIR rats, while pro-angionenic signals released by Müller cells in the hypoxic retina could drive pathological neovascularization in the ischemic retina. These data warrant further studies to investigate new therapeutic approaches for ROP.
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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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