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McCallinhart PE, Chade AR, Bender SB, Trask AJ. Expanding landscape of coronary microvascular disease in co-morbid conditions: Metabolic disease and beyond. J Mol Cell Cardiol 2024; 192:26-35. [PMID: 38734061 DOI: 10.1016/j.yjmcc.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/26/2024] [Accepted: 05/08/2024] [Indexed: 05/13/2024]
Abstract
Coronary microvascular disease (CMD) and impaired coronary blood flow control are defects that occur early in the pathogenesis of heart failure in cardiometabolic conditions, prior to the onset of atherosclerosis. In fact, recent studies have shown that CMD is an independent predictor of cardiac morbidity and mortality in patients with obesity and metabolic disease. CMD is comprised of functional, structural, and mechanical impairments that synergize and ultimately reduce coronary blood flow in metabolic disease and in other co-morbid conditions, including transplant, autoimmune disorders, chemotherapy-induced cardiotoxicity, and remote injury-induced CMD. This review summarizes the contemporary state-of-the-field related to CMD in metabolic and these other co-morbid conditions based on mechanistic data derived mostly from preclinical small- and large-animal models in light of available clinical evidence and given the limitations of studying these mechanisms in humans. In addition, we also discuss gaps in current understanding, emerging areas of interest, and opportunities for future investigations in this field.
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Affiliation(s)
- Patricia E McCallinhart
- Center for Cardiovascular Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States of America
| | - Alejandro R Chade
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, MO, United States of America; Department of Medicine, University of Missouri School of Medicine, Columbia, MO, United States of America
| | - Shawn B Bender
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, United States of America; Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States of America; Research Service, Harry S Truman Memorial Veterans Hospital, Columbia, MO, United States of America.
| | - Aaron J Trask
- Center for Cardiovascular Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, United States of America; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, United States of America.
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Bouisset F, Bataille V, Schiele F, Puymirat E, Fayol A, Simon T, Danchin N, Ferrières J. Type 2 diabetes mellitus in acute myocardial infarction: a persistent significant burden on long-term mortality. Front Cardiovasc Med 2024; 11:1401569. [PMID: 38932992 PMCID: PMC11204119 DOI: 10.3389/fcvm.2024.1401569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/13/2024] [Indexed: 06/28/2024] Open
Abstract
Objective The long-term impact of type 2 diabetes mellitus (T2DM) after an acute myocardial infarction (AMI) has not been thoroughly investigated yet. This study aimed to assess the long-term impact of T2DM after AMI. Research design and methods We analyzed the data of three nationwide observational studies from the French Registry of Acute ST-elevation and non-ST-elevation Myocardial Infarction (FAST-MI) program, conducted over a 1-month period in 2005, 2010, and 2015. Patients presenting T2DM were classified as diabetic, and patients presenting type 1 diabetes mellitus were excluded. We identified factors related to all-cause death at 1-year follow-up and divided 1,897 subjects into two groups, paired based on their estimated 1-year probability of death as determined by a logistic regression model. Results A total of 9,181 AMI patients were included in the analysis, among them 2,038 (22.2%) had T2DM. Patients with diabetes were significantly older (68.2 ± 12.0 vs. 63.8 ± 14.4, p < 0.001) and had a higher prevalence of a prior history of percutaneous coronary intervention (PCI), coronary artery bypass grafting (CABG), or heart failure (22.5% vs. 13.0%, 7.1% vs. 3.1% and 6.7 vs. 3.8% respectively, p < 0.001 for all). Even after matching two groups of 1,897 patients based on propensity score for their 1-year probability of death, diabetes remained associated with long-term mortality, with an HR of 1.30, 95%CI (1.17-1.45), p < 0.001. Conclusions T2DM per se has an adverse impact on long-term survival after myocardial infarction. Independently of the risk of short-term mortality, patients with diabetes who survived an AMI have a 30% higher risk of long-term mortality.
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Affiliation(s)
- Frédéric Bouisset
- Department of Cardiology, Toulouse Rangueil University Hospital, INSERM UMR 1295, Toulouse, France
| | - Vincent Bataille
- Department of Cardiology, Toulouse Rangueil University Hospital, INSERM UMR 1295, Toulouse, France
- Association Pour la Diffusion de la Médecine de Prévention (ADIMEP), Toulouse, France
| | - François Schiele
- Department of Cardiology, University Hospital Jean Minjoz, Besançon, France
| | - Etienne Puymirat
- Department of Cardiology, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Européen Georges Pompidou, Université Paris-Descartes, Paris, France
| | - Antoine Fayol
- Department of Cardiology, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Européen Georges Pompidou, Université Paris-Descartes, Paris, France
| | - Tabassome Simon
- Department of Clinical Pharmacology and Unité de Recherche Clinique (URCEST), AP-HP, Hôpital Saint Antoine, Université Pierre et Marie Curie (UPMC-Paris 06), Paris, France
| | - Nicolas Danchin
- Department of Cardiology, Hôpital Saint Joseph, Paris, France
| | - Jean Ferrières
- Department of Cardiology, Toulouse Rangueil University Hospital, INSERM UMR 1295, Toulouse, France
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Liu B, Wei Y, He J, Feng B, Chen Y, Guo R, Griffin MD, Hynes SO, Shen S, Liu Y, Cui H, Ma J, O'Brien T. Human umbilical cord-derived mesenchymal stromal cells improve myocardial fibrosis and restore miRNA-133a expression in diabetic cardiomyopathy. Stem Cell Res Ther 2024; 15:120. [PMID: 38659015 PMCID: PMC11040946 DOI: 10.1186/s13287-024-03715-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 04/02/2024] [Indexed: 04/26/2024] Open
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) is a serious health-threatening complication of diabetes mellitus characterized by myocardial fibrosis and abnormal cardiac function. Human umbilical cord mesenchymal stromal cells (hUC-MSCs) are a potential therapeutic tool for DCM and myocardial fibrosis via mechanisms such as the regulation of microRNA (miRNA) expression and inflammation. It remains unclear, however, whether hUC-MSC therapy has beneficial effects on cardiac function following different durations of diabetes and which mechanistic aspects of DCM are modulated by hUC-MSC administration at different stages of its development. This study aimed to investigate the therapeutic effects of intravenous administration of hUC-MSCs on DCM following different durations of hyperglycemia in an experimental male model of diabetes and to determine the effects on expression of candidate miRNAs, target mRNA and inflammatory mediators. METHODS A male mouse model of diabetes was induced by multiple low-dose streptozotocin injections. The effects on severity of DCM of intravenous injections of hUC-MSCs and saline two weeks previously were compared at 10 and 18 weeks after diabetes induction. At both time-points, biochemical assays, echocardiography, histopathology, polymerase chain reaction (PCR), immunohistochemistry and enzyme-linked immunosorbent assays (ELISA) were used to analyze blood glucose, body weight, cardiac structure and function, degree of myocardial fibrosis and expression of fibrosis-related mRNA, miRNA and inflammatory mediators. RESULTS Saline-treated diabetic male mice had impaired cardiac function and increased cardiac fibrosis after 10 and 18 weeks of diabetes. At both time-points, cardiac dysfunction and fibrosis were improved in hUC-MSC-treated mice. Pro-fibrotic indicators (α-SMA, collagen I, collagen III, Smad3, Smad4) were reduced and anti-fibrotic mediators (FGF-1, miRNA-133a) were increased in hearts of diabetic animals receiving hUC-MSCs compared to saline. Increased blood levels of pro-inflammatory cytokines (IL-6, TNF, IL-1β) and increased cardiac expression of IL-6 were also observed in saline-treated mice and were reduced by hUC-MSCs at both time-points, but to a lesser degree at 18 weeks. CONCLUSION Intravenous injection of hUC-MSCs ameliorated key functional and structural features of DCM in male mice with diabetes of shorter and longer duration. Mechanistically, these effects were associated with restoration of intra-myocardial expression of miRNA-133a and its target mRNA COL1AI as well as suppression of systemic and localized inflammatory mediators.
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Affiliation(s)
- Boxin Liu
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province, 050017, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Hebei Province, China
| | - Yan Wei
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province, 050017, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Hebei Province, China
| | - Jingjing He
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province, 050017, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Hebei Province, China
| | - Baofeng Feng
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province, 050017, China
- Human Anatomy Department, Hebei Medical University, Hebei Province, 050017, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Hebei Province, China
| | - Yimeng Chen
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province, 050017, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Hebei Province, China
| | - Ruiyun Guo
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province, 050017, China
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Hebei Province, China
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Hebei Province, China
| | - Matthew D Griffin
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China
- Regenerative Medicine Institute (REMEDI) at CÚRAM SFI Research Centre for Medical Devices, School of Medicine, University of Galway, Galway, Ireland
| | - Seán O Hynes
- Discipline of Pathology, School of Medicine, University of Galway, Galway, Ireland
| | - Sanbing Shen
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China
- Regenerative Medicine Institute (REMEDI) at CÚRAM SFI Research Centre for Medical Devices, School of Medicine, University of Galway, Galway, Ireland
| | - Yan Liu
- Department of Endocrinology, Hebei Medical University Third Affiliated Hospital, Shijiazhuang, Hebei, 050051, China
| | - Huixian Cui
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China.
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province, 050017, China.
- Human Anatomy Department, Hebei Medical University, Hebei Province, 050017, China.
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Hebei Province, China.
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Hebei Province, China.
| | - Jun Ma
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China.
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province, 050017, China.
- Human Anatomy Department, Hebei Medical University, Hebei Province, 050017, China.
- Hebei Technology Innovation Center for Stem Cell and Regenerative Medicine, Hebei Province, China.
- Hebei International Joint Research Center for Stem Cell and Regenerative Medicine, Hebei Province, China.
| | - Timothy O'Brien
- Stem Cell Research Center, Hebei Medical University-University of Galway, Hebei Medical University, Hebei Province, 050017, China.
- Regenerative Medicine Institute (REMEDI) at CÚRAM SFI Research Centre for Medical Devices, School of Medicine, University of Galway, Galway, Ireland.
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Almohaimeed GM, Alonazi AS, Bin Dayel AF, Alshammari TK, Alghibiwi HK, Alamin MA, Almotairi AR, Alrasheed NM. Interplay between Senescence and Macrophages in Diabetic Cardiomyopathy: A Review of the Potential Role of GDF-15 and Klotho. Biomedicines 2024; 12:759. [PMID: 38672115 PMCID: PMC11048311 DOI: 10.3390/biomedicines12040759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 03/19/2024] [Accepted: 03/27/2024] [Indexed: 04/28/2024] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a critical health problem, with 700 million diagnoses expected worldwide by 2045. Uncontrolled high blood glucose levels can lead to serious complications, including diabetic cardiomyopathy (DCM). Diabetes induces cardiovascular aging and inflammation, increasing cardiomyopathy risk. DCM is characterized by structural and functional abnormalities in the heart. Growing evidence suggests that cellular senescence and macrophage-mediated inflammation participate in the pathogenesis and progression of DCM. Evidence indicates that growth differentiation factor-15 (GDF-15), a protein that belongs to the transforming growth factor-beta (TGF-β) superfamily, is associated with age-related diseases and exerts an anti-inflammatory role in various disease models. Although further evidence suggests that GDF-15 can preserve Klotho, a transmembrane antiaging protein, emerging research has elucidated the potential involvement of GDF-15 and Klotho in the interplay between macrophages-induced inflammation and cellular senescence in the context of DCM. This review explores the intricate relationship between senescence and macrophages in DCM while highlighting the possible contributions of GDF-15 and Klotho.
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Affiliation(s)
- Ghada M. Almohaimeed
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (G.M.A.); (A.S.A.); (A.F.B.D.); (T.K.A.); (H.K.A.); (M.A.A.)
| | - Asma S. Alonazi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (G.M.A.); (A.S.A.); (A.F.B.D.); (T.K.A.); (H.K.A.); (M.A.A.)
| | - Anfal F. Bin Dayel
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (G.M.A.); (A.S.A.); (A.F.B.D.); (T.K.A.); (H.K.A.); (M.A.A.)
| | - Tahani K. Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (G.M.A.); (A.S.A.); (A.F.B.D.); (T.K.A.); (H.K.A.); (M.A.A.)
| | - Hanan K. Alghibiwi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (G.M.A.); (A.S.A.); (A.F.B.D.); (T.K.A.); (H.K.A.); (M.A.A.)
| | - Maha A. Alamin
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (G.M.A.); (A.S.A.); (A.F.B.D.); (T.K.A.); (H.K.A.); (M.A.A.)
| | - Ahmad R. Almotairi
- Department of Pathology, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia;
| | - Nouf M. Alrasheed
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (G.M.A.); (A.S.A.); (A.F.B.D.); (T.K.A.); (H.K.A.); (M.A.A.)
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Elsanan MAHA, Tahoon IHHH, Mohamed GI, El-Dosouky II, Shehata IE. Predictors of non-obstructive coronary slow flow in poorly controlled type 2 diabetes mellitus: a cross-sectional study. BMC Cardiovasc Disord 2024; 24:83. [PMID: 38302950 PMCID: PMC10832194 DOI: 10.1186/s12872-024-03738-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 01/18/2024] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND Coronary slow flow (CSF) can occur due to various factors, such as inflammation, small vessel disease, endothelial dysfunction, and inadequate glucose control. However, the exact pathological mechanisms behind CSF remain incompletely understood. The objective of this study was to identify the risk factors associated with slow coronary flow in individuals with Type 2 Diabetes Mellitus (T2DM) who have non-obstructive coronary artery disease (CAD) and experience CSF. METHODS We conducted a prospective cohort study involving 120 patients with T2DM who were referred for invasive coronary angiography due to typical chest pain or inconclusive results from non-invasive tests for myocardial ischemia. Using a 2 × 2 design, we categorized patients into groups based on their glycemic control (adequate or poor) and the presence of CSF (yes or no), defined by a TIMI frame count > 27. All patients had non-obstructive CAD, characterized by diameter stenosis of less than 40%. We identified many variables associated with CSF. RESULTS Our investigation revealed no significant differences in age, sex, family history of coronary artery disease, ECG ischemia abnormalities, or echocardiographic (ECHO) data between the groups. In patients with adequate glycemic control, hypertension increased the risk of CSF by 5.33 times, smoking by 3.2 times, while dyslipidemia decreased the risk by 0.142. Additionally, hematocrit increased the risk by 2.3, and the platelet-to-lymphocyte ratio (PLR) increased the risk by 1.053. Among patients with poor glycemic control, hematocrit increased the risk by 2.63, and the Neutrophil-to-Lymphocyte Ratio (NLR) by 24.6. Notably, NLR was positively correlated with glycemic control parameters in T2DM patients with CSF. CONCLUSIONS In T2DM patients with CSF, various factors strongly correlate with glycemic control parameters and can be employed to predict the likelihood of CSF. These factors encompass hypertension, smoking, increased body mass index (BMI), elevated platelet count, hematocrit, NLR, PLR, and C-reactive protein (CRP). TRIAL REGISTRATION Registry: ZU-IRB (ZU-IRB#9419-3-4-2022), Registered on: 3 April 2022, Email: IRB_123@medicine.zu.edu.eg.
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Affiliation(s)
| | | | - Ghada Ibrahim Mohamed
- Department of Cardiology, Faculty of Medicine, Zagazig University, Sharkia Governorate, Zagazig, 44519, Egypt
| | - Ibtesam Ibrahim El-Dosouky
- Department of Cardiology, Faculty of Medicine, Zagazig University, Sharkia Governorate, Zagazig, 44519, Egypt
| | - Islam Elsayed Shehata
- Department of Cardiology, Faculty of Medicine, Zagazig University, Sharkia Governorate, Zagazig, 44519, Egypt.
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Liu B, Zhang J, Zhou Z, Feng B, He J, Yan W, Zhou X, Amponsah AE, Guo R, Du X, Liu X, Cui H, O'Brien T, Ma J. Preclinical Evidence for the Effectiveness of Mesenchymal Stromal Cells for Diabetic Cardiomyopathy: A Systematic Review and Meta-analysis. Curr Stem Cell Res Ther 2024; 19:220-233. [PMID: 37165495 DOI: 10.2174/1574888x18666230510111302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/28/2023] [Accepted: 04/04/2023] [Indexed: 05/12/2023]
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) is a complication of diabetes mellitus that endangers human health. DCM results in cardiac dysfunction, which eventually progresses to heart failure. Mesenchymal stromal cells (MSCs), a type of multipotent stem cell, have shown promising therapeutic effects in various cardiovascular diseases and diabetic complications in preclinical studies due to their immunomodulatory and regenerative abilities. However, there is still a lack of evidence to summarize the effectiveness of MSCs in the treatment of DCM. Therefore, a meta-analysis and systematic review are warranted to evaluate the therapeutic potential of MSCs for DCM in preclinical studies. METHODS A comprehensive literature search in English or Chinese was conducted in PubMed, EMBASE, web of Science, Cochrane Library, and China National Knowledge Internet from inception to June 30, 2022. The summarized outcomes included echocardiography, morphology, and pathology. Data were independently extracted and analyzed by two authors. The software we adopted was Review Manager5.4.1. This systematic review was written in compliance with PRISMA 2020 and the review protocol was registered on PROSPERO, registration no. CRD42022350032. RESULTS We included 20 studies in our meta-analysis to examine the efficacy of MSCs in the treatment of DCM. The MSC-treated group showed a statistically significant effect on left ventricular ejection fraction (WMD=12.61, 95% CI 4.32 to 20.90, P=0.003) and short axis fractional shortening (WMD=6.84, 95% CI 4.09 to 9.59, P < 0.00001). The overall effects on the ratio of early to late diastolic mitral annular velocity, left ventricular end-diastolic pressure, maximum positive pressure development, maximum negative pressure development, left ventricular relaxation time constant, heart weight to body weight ratio, fibrosis area, and arteriole density were analyzed, suggesting that MSCs represent an effective therapy for the treatment of DCM. CONCLUSION Our results suggest a therapeutic role for MSCs in the treatment of DCM, and these results provide support for the use of MSCs in clinical trials of patients with DCM.
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Affiliation(s)
- Boxin Liu
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Jinyu Zhang
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Zijing Zhou
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Baofeng Feng
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Jingjing He
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Wei Yan
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Xinghong Zhou
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Asiamah Ernest Amponsah
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
| | - Ruiyun Guo
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Xiaofeng Du
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Xin Liu
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
| | - Huixian Cui
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Human Anatomy Department, Hebei Medical University, Shijiazhuang, 050017, Hebei Province
| | - Timothy O'Brien
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Regenerative Medicine Institute, School of Medicine, National University of Ireland Galway, Galway, Ireland
| | - Jun Ma
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Shijiazhuang, 050017, Hebei Province, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Shijiazhuang, 050017, Hebei Province, China
- Human Anatomy Department, Hebei Medical University, Shijiazhuang, 050017, Hebei Province
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7
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de Winter RW, Jukema RA, van Diemen PA, Schumacher SP, Somsen YB, van de Hoef TP, van Rossum AC, Twisk JW, Maaniitty T, Knuuti J, Saraste A, Nap A, Raijmakers PG, Danad I, Knaapen P. Prognostic Value of Modified Coronary Flow Capacity Derived From [ 15O]H 2O Positron Emission Tomography Perfusion Imaging. Circ Cardiovasc Imaging 2023; 16:e014845. [PMID: 37725672 PMCID: PMC10510823 DOI: 10.1161/circimaging.122.014845] [Citation(s) in RCA: 1] [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: 09/02/2022] [Accepted: 07/26/2023] [Indexed: 09/21/2023]
Abstract
BACKGROUND Coronary flow capacity (CFC) is a measure that integrates hyperemic myocardial blood flow and coronary flow reserve to quantify the pathophysiological impact of coronary artery disease on vasodilator capacity. This study explores the prognostic value of modified CFC derived from [15O]H2O positron emission tomography perfusion imaging. METHODS Quantitative rest/stress perfusion measurements were obtained from 1300 patients with known or suspected coronary artery disease. Patients were classified as having myocardial steal (n=38), severely reduced CFC (n=141), moderately reduced CFC (n=394), minimally reduced CFC (n=245), or normal flow (n=482) using previously defined thresholds. The end point was a composite of death and nonfatal myocardial infarction. RESULTS During a median follow-up of 5.5 (interquartile range, 3.7-7.8) years, the end point occurred in 153 (12%) patients. Myocardial steal (hazard ratio [HR], 6.70 [95% CI, 3.21-13.99]; P<0.001), severely reduced CFC (HR, 2.35 [95% CI, 1.16-4.78]; P=0.018), and moderately reduced CFC (HR, 1.95 [95% CI, 1.11-3.41]; P=0.020) were associated with worse prognosis compared with normal flow, after adjusting for clinical characteristics. Similarly, in the overall population, increased resting myocardial blood flow (HR, 3.05 [95% CI, 1.68-5.54]; P<0.001), decreased hyperemic myocardial blood flow (HR, 0.68 [95% CI, 0.52-0.90]; P=0.007) and decreased coronary flow reserve (HR, 0.55 [95% CI, 0.42-0.71]; P<0.001) were independently associated with adverse outcome. In a model adjusted for the combined use of perfusion metrics, modified CFC demonstrated independent prognostic value (overall P=0.017). CONCLUSIONS [15O]H2O positron emission tomography-derived resting myocardial blood flow, hyperemic myocardial blood flow, coronary flow reserve, and CFC are prognostic factors for death and nonfatal myocardial infarction in patients with known or suspected coronary artery disease. Importantly, after adjustment for clinical characteristics and the combined use of [15O]H2O positron emission tomography perfusion metrics, modified CFC remained independently associated with adverse outcome.
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Affiliation(s)
- Ruben W. de Winter
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Ruurt A. Jukema
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Pepijn A. van Diemen
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Stefan P. Schumacher
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Yvemarie B.O. Somsen
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Tim P. van de Hoef
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Albert C. van Rossum
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Jos W.R. Twisk
- Epidemiology & Data Science (J.W.R.T.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Teemu Maaniitty
- Turku PET Centre, Turku University Hospital and University of Turku, Finland (T.M., J.K., A.S.)
| | - Juhani Knuuti
- Turku PET Centre, Turku University Hospital and University of Turku, Finland (T.M., J.K., A.S.)
| | - Antti Saraste
- Turku PET Centre, Turku University Hospital and University of Turku, Finland (T.M., J.K., A.S.)
| | - Alexander Nap
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Pieter G. Raijmakers
- Radiology, Nuclear Medicine & PET Research (P.G.R.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Ibrahim Danad
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
| | - Paul Knaapen
- Departments of Cardiology (R.W.d.W., R.A.J., P.A.v.D., S.P.S., Y.B.O.S., T.P.v.d.H., A.C.v.R., A.N., I.D., P.K.), Amsterdam University Medical Centers, Location Vrije Universiteit Amsterdam, the Netherlands
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8
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Pintea Bentea G, Berdaoui B, Samyn S, Morissens M, van de Borne P, Castro Rodriguez J. Particularities of coronary physiology in patients with atrial fibrillation: insights from combined pressure and flow indices measurements. Front Cardiovasc Med 2023; 10:1206743. [PMID: 37645524 PMCID: PMC10461314 DOI: 10.3389/fcvm.2023.1206743] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 07/31/2023] [Indexed: 08/31/2023] Open
Abstract
Background Symptoms suggestive of myocardial ischemia are frequently encountered in patients with atrial fibrillation (AF) even in the absence of obstructive coronary artery disease. Nevertheless, an in-depth characterisation of coronary physiology in patients with AF is currently lacking. Objectives We aim to provide an insight into the characteristics of coronary physiology in AF, by performing simultaneous invasive measurements of coronary flow- and pressure- indices in a real-life population of patients with AF and indication of coronary angiography. Methods This is a prospective open label study including patients with permanent or persistent AF and indication of coronary angiography showing intermediate coronary stenosis requiring routine physiological assessment (n = 18 vessels from 14 patients). We measured FFR (fractional flow reserve), and Doppler-derived coronary flow indices, including CFR (coronary flow reserve) and HMR (hyperaemic microvascular resistance). Results From the analysed vessels, 18/18 vessels (100%) presented a pathological CFR (<2.5), indicative of coronary microvascular dysfunction (CMD), and 3/18 (17%) demonstrated obstructive epicardial coronary disease (FFR ≤ 0.8). A large proportion of vessels (15/18; 83%) showed discordant FFR/CFR with preserved FFR and low CFR. 47% of the coronary arteries in patients with AF and non-obstructive epicardial coronary disease presented structural CMD (HMR ≥ 2.5 mmHg/cm/s), and were associated with high BMR and an impaired response to adenosine. Conversely, vessels from patients with AF and non-obstructive epicardial coronary disease with functional CMD (HMR < 2.5 mmHg/cm/s) showed higher bAPV. The permanent AF subpopulation presented increased values of HMR and BMR compared to persistent AF, while structural CMD was more often associated with persistent symptoms at 3 months, taking into account the limited sample size of our study. Conclusion Our findings highlight a systematically impaired CFR in patients with AF even in the absence of obstructive epicardial coronary disease, indicative of CMD. In addition, patients with AF presented more prevalent structural CMD (HMR ≥ 2.5 mmHg/cm/s), characterized by reduced hyperaemic responses to adenosine, possibly interfering with the FFR assessment.
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Affiliation(s)
| | | | - Sophie Samyn
- Department of Cardiology, CHU Brugmann, Brussels, Belgium
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Toya T, Nagatomo Y, Ikegami Y, Masaki N, Adachi T. Coronary microvascular dysfunction in heart failure patients. Front Cardiovasc Med 2023; 10:1153994. [PMID: 37332583 PMCID: PMC10272355 DOI: 10.3389/fcvm.2023.1153994] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 05/23/2023] [Indexed: 06/20/2023] Open
Abstract
Coronary microcirculation has multiple layers of autoregulatory function to maintain resting flow and augment hyperemic flow in response to myocardial demands. Functional or structural alterations in the coronary microvascular function are frequently observed in patients with heart failure with preserved or reduced ejection fraction, which may lead to myocardial ischemic injury and resultant worsening of clinical outcomes. In this review, we describe our current understanding of coronary microvascular dysfunction in the pathogenesis of heart failure with preserved and reduced ejection fraction.
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10
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Civieri G, Masiero G, Osto E, Gambino A, Angelini A, Fraiese A, Fedrigo M, Toscano G, Bottio T, Perazzolo Marra M, Iliceto S, Gerosa G, Tona F. Coronary Collateral Circulation: A New Predictor of Mortality in Heart Transplant Recipients With Allograft Vasculopathy. Transplant Direct 2023; 9:e1470. [PMID: 37090121 PMCID: PMC10118324 DOI: 10.1097/txd.0000000000001470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 04/25/2023] Open
Abstract
Coronary collateral arteries (CCAs) are anastomotic channels between vessels; although beneficial in atherosclerosis, their role in heart transplantation (HT) recipients is underinvestigated. CCAs initially develop as microcirculation and cardiac allograft vasculopathy (CAV), promoting immune-dependent proliferative angiogenic response, and play a role in their development. In our hypothesis, ischemia induced by coronary microvascular dysfunction (CMD) triggers the development of CCAs, which are, in turn, less functional as affected by CAV themselves. Methods One hundred twenty-one patients receiving HT at our institution were retrospectively evaluated and were included if transthoracic echocardiography with coronary flow velocity reserve (CFVR) assessment and coronary angiography were performed. CMD was defined as CFVR of ≤2.5. Patients with CAV were enrolled, and their angiograms were reviewed to evaluate the presence of CCAs. Cardiovascular mortality was assessed as the main clinical outcome. Results Forty patients were found to have CCAs. Patients with CCAs have lower CFVR than those without CCAs (2.22 ± 0.72 versus 2.69 ± 0.92;P = 0.003), reflecting in different rates of CMD in the 2 groups (72.5% versus 37%; P < 0.001). CMD is associated with higher CAV grades (P < 0.001), which are also associated with CCAs (P < 0.001). Patients with poorly developed CCAs have lower CFVR (P < 0.001). At multivariable analysis, CMD (P = 0.008) and higher CAV grades (P = 0.005) are independent predictors of CCAs. During the median follow-up time of 10.2 (6.6-13.3) y, patients with CCAs have been found to have higher mortality than those without CCAs (57.5% versus 32.1%; P = 0.007). CCAs are associated with a lower probability of survival also in patients with CMD (P < 0.001) and are independent predictors of mortality (P < 0.001). Conclusions Our results demonstrate an interplay between CAV, CMD, and CCAs. We confirm that CAV is associated with CMD, and we show, for the first time, that CMD is associated with CCAs. CCAs are pathophysiologically associated with more severe graft vasculopathy and independently predict mortality after HT.
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Affiliation(s)
- Giovanni Civieri
- Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Giulia Masiero
- Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Elena Osto
- Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland
- Institute for Clinical Chemistry, University Hospital Zurich and University of Zürich, Zurich, Switzerland
| | - Antonio Gambino
- Division of Cardiac Surgery, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Annalisa Angelini
- Cardiac Pathology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Angela Fraiese
- Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland
| | - Marny Fedrigo
- Cardiac Pathology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Giuseppe Toscano
- Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland
| | - Tomaso Bottio
- Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland
| | - Martina Perazzolo Marra
- Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Sabino Iliceto
- Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Gino Gerosa
- Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland
| | - Francesco Tona
- Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
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11
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Geng L, Shi X, Yuan Y, Du P, Gao L, Wang Y, Li J, Guo W, Huang Y, Zhang Q. Anatomical and Functional Discrepancy in Diabetic Patients With Intermediate Coronary Lesions - An Intravascular Ultrasound and Quantitative Flow Ratio Study. Circ J 2023; 87:320-328. [PMID: 36104251 DOI: 10.1253/circj.cj-22-0238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Data regarding the performance of computational fractional flow reserve in patients with diabetes mellitus (DM) remain scarce. This study sought to explore the impact of DM on quantitative flow ratio (QFR) and its association with intravascular ultrasound (IVUS)-derived anatomical references.Methods and Results: IVUS and QFR were retrospectively analyzed in 237 non-diabetic and 93 diabetic patients with 250 and 102 intermediate lesions, respectively. Diabetics were further categorized based on adequate (HbA1c <7.0%: 47 patients with 53 lesions) or poor (HbA1c ≥7.0%: 46 patients with 49 lesions) glycemic control. Lesions with QFR ≤0.8 or minimum lumen area (MLA) ≤4.0 mm2and plaque burden (PB, %) ≥70 were considered functionally or anatomically significant, respectively. PB increased, and MLA decreased stepwise across non-diabetics, diabetics with adequate glycemic control and those with poor glycemic control. In contrast, QFR was similar among the 3 groups. PB correlated significantly with the QFR for lesions in non-diabetics, but not for lesions in diabetics. DM was independently correlated with the functionally non-significant lesions (QFR >0.8) with high-risk IVUS features (MLA ≤4.0 mm2and PB ≥70; OR 2.053, 95% CI: 1.137-3.707, P=0.017). When considering the effect of glycemic control, HbA1c was an independent predictor of anatomical-functional discordance (OR 1.347, 95% CI: 1.089-1.667, P=0.006). CONCLUSIONS Anatomical-functional discordance of intermediate coronary lesions assessed by IVUS and QFR is exacerbated in patients with diabetes, especially when glycemia is poorly controlled.
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Affiliation(s)
- Liang Geng
- Department of Cardiology, Shanghai East Hospital, Tongji University.,Department of Cardiology, JI'AN Hospital, Shanghai East Hospital
| | - Xibao Shi
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiaotong University School of Medicine
| | - Yuan Yuan
- Department of Cardiology, Shanghai East Hospital, Tongji University
| | - Peizhao Du
- Department of Cardiology, Baoshan Hospital of Integrated Traditional Chinese and Western Medicine
| | - Liming Gao
- Department of Cardiology, Shanghai East Hospital, Tongji University
| | - Yunkai Wang
- Department of Cardiology, Shanghai East Hospital, Tongji University
| | - Jiming Li
- Department of Cardiology, Shanghai East Hospital, Tongji University
| | - Wei Guo
- Department of Cardiology, Shanghai East Hospital, Tongji University
| | - Ying Huang
- Department of Cardiology, Shanghai East Hospital, Tongji University
| | - Qi Zhang
- Department of Cardiology, Shanghai East Hospital, Tongji University
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12
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Ma P, Liu J, Hu Y, Chen L, Liang H, Zhou X, Shang Y, Wang J. Stress CMR T1-mapping technique for assessment of coronary microvascular dysfunction in a rabbit model of type II diabetes mellitus: Validation against histopathologic changes. Front Cardiovasc Med 2023; 9:1066332. [PMID: 36741851 PMCID: PMC9895118 DOI: 10.3389/fcvm.2022.1066332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/28/2022] [Indexed: 01/21/2023] Open
Abstract
Background Coronary microvascular dysfunction (CMD) is an early character of type 2 diabetes mellitus (T2DM), and is indicative of adverse events. The present study aimed to validate the performance of the stress T1 mapping technique on cardiac magnetic resonance (CMR) for identifying CMD from a histopathologic perspective and to establish the time course of CMD-related parameters in a rabbit model of T2DM. Methods New Zealand white rabbits (n = 30) were randomly divided into a control (n = 8), T2DM 5-week (n = 6), T2DM 10-week (n = 9), and T2DM 15-week (n = 7) groups. The CMR protocol included rest and adenosine triphosphate (ATP) stress T1-mapping imaging using the 5b(20b)3b-modified look-locker inversion-recovery (MOLLI) schema to quantify stress T1 response (stress ΔT1), and first-pass perfusion CMR to quantify myocardial perfusion reserve index (MPRI). After the CMR imaging, myocardial tissue was subjected to hematoxylin-eosin staining to evaluate pathological changes, Masson trichrome staining to measure collagen volume fraction (CVF), and CD31 staining to measure microvascular density (MVD). The associations between CMR parameters and pathological findings were determined using Pearson correlation analysis. Results The stress ΔT1 values were 6.21 ± 0.59%, 4.88 ± 0.49%, 3.80 ± 0.40%, and 3.06 ± 0.54% in the control, T2DM 5-week, 10-week, and 15-week groups, respectively (p < 0.001) and were progressively weakened with longer duration of T2DM. Furthermore, a significant correlation was demonstrated between the stress ΔT1 vs. CVF and MVD (r = -0.562 and 0.886, respectively; p < 0.001). Conclusion The stress T1 response correlated well with the histopathologic measures in T2DM rabbits, indicating that it may serve as a sensitive CMD-related indicator in early T2DM.
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Affiliation(s)
- Peisong Ma
- Department of Radiology, Southwest Hospital, Army Medical University, Third Military Medical University, Chongqing, China,Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Juan Liu
- Department of Ultrasound, Southwest Hospital, Army Medical University, Third Military Medical University, Chongqing, China
| | - Yurou Hu
- Department of Radiology, Southwest Hospital, Army Medical University, Third Military Medical University, Chongqing, China
| | - Lin Chen
- Department of Radiology, Southwest Hospital, Army Medical University, Third Military Medical University, Chongqing, China
| | - Hongqin Liang
- Department of Radiology, Southwest Hospital, Army Medical University, Third Military Medical University, Chongqing, China
| | - Xiaoyue Zhou
- MR Collaboration, Siemens Healthineers Ltd., Shanghai, China
| | - Yongning Shang
- Department of Ultrasound, Southwest Hospital, Army Medical University, Third Military Medical University, Chongqing, China,*Correspondence: Yongning Shang,
| | - Jian Wang
- Department of Radiology, Southwest Hospital, Army Medical University, Third Military Medical University, Chongqing, China,Jian Wang,
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13
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Meng Q, Yang J, Wang F, Li C, Sang G, Liu H, Shen D, Zhang J, Jiang S, Yusufu A, Du G. Development and External Validation of Nomogram to Identify Risk Factors for CHD in T2DM in the Population of Northwestern China. Diabetes Metab Syndr Obes 2023; 16:1271-1282. [PMID: 37168834 PMCID: PMC10166093 DOI: 10.2147/dmso.s404683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/30/2023] [Indexed: 05/13/2023] Open
Abstract
Purpose Cardiovascular disease is the leading cause of mortality in patients with type 2 diabetes mellitus (T2DM). This study aimed to develop and validate a nomogram for predicting the risk factors for coronary heart disease (CHD) in T2DM in the population of northwestern China. Patients and Methods The records of 2357 T2DM patients who were treated in the First Affiliated Hospital of Xinjiang Medical University from July 2021 to July 2022 were reviewed. After some data (n =239) were excluded, 2118 participants were included in the study and randomly divided into a training set (n =1483) and a validation set (n = 635) at a ratio of 3:1. Univariate and stepwise regression analysis was performed to screen risk factors and develop predictive models. The results of logistic regression are presented through a nomogram. The C-index, receiver operating characteristic (ROC) curve, calibration plot, and decision curve analysis (DCA) were employed to verify the distinction, calibration, and clinical practicality of the model. Results The stepwise logistic regression analysis suggested that independent factors in patients with T2DM combined with CHD were age, gender, hypertension (HTN), glycated hemoglobin (HbA1c), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), and Uygur, which were associated with the occurrence of CHD. The nomogram demonstrated good discrimination with a C-index of 0.771 (95% CI, 0.741, 0.800) in the training set and 0.785 (95% CI, 0.743, 0.828) in the validation set. The area under curve (AUC) of the ROC curves were 0.771 (95% CI, 0.741, 0.800) and 0.785 (95% CI, 0.743, 0.828) in the training and validation sets, respectively. The nomogram was well-calibrated. The DCA revealed that the nomogram was clinically valuable. Conclusion A nomogram based on 7 clinical characteristics was developed to predict CHD in patients with T2DM.
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Affiliation(s)
- Qi Meng
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Jing Yang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Fei Wang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Cheng Li
- Laboratory Medicine Diagnostic Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Guoyao Sang
- Data Statistics and Analysis Center of Operation Management Department, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Hua Liu
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Di Shen
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Jinxia Zhang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Sheng Jiang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Aibibai Yusufu
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
| | - Guoli Du
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, People’s Republic of China
- Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, People’s Republic of China
- Correspondence: Guoli Du; Aibibai Yusufu, Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, People’s Republic of China, Email ;
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14
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Mehta PK, Huang J, Levit RD, Malas W, Waheed N, Bairey Merz CN. Ischemia and no obstructive coronary arteries (INOCA): A narrative review. Atherosclerosis 2022; 363:8-21. [PMID: 36423427 PMCID: PMC9840845 DOI: 10.1016/j.atherosclerosis.2022.11.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 10/30/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022]
Abstract
Myocardial ischemia with no obstructive coronary arteries (INOCA) is a chronic coronary syndrome condition that is increasingly being recognized as a substantial contributor to adverse cardiovascular mortality and outcomes, including myocardial infarction and heart failure with preserved ejection fraction (HFpEF). While INOCA occurs in both women and men, women are more likely to have the finding of INOCA and are more adversely impacted by angina, with recurrent hospitalizations and a lower quality of life with this condition. Abnormal epicardial coronary vascular function and coronary microvascular dysfunction (CMD) have been identified in a majority of INOCA patients on invasive coronary function testing. CMD can co-exist with obstructive epicardial coronary artery disease (CAD), diffuse non-obstructive epicardial CAD, and with coronary vasospasm. Epicardial vasospasm can also occur with normal coronary arteries that have no atherosclerotic plaque on intravascular imaging. While all predisposing factors are not clearly understood, cardiometabolic risk factors, and endothelium dependent and independent mechanisms that increase oxidative stress and inflammation are associated with microvascular injury, CMD and INOCA. Cardiac autonomic dysfunction has also been implicated in abnormal vasoreactivity and persistent symptoms. INOCA is under-recognized and under-diagnosed, partly due to the heterogenous patient populations and mechanisms. However, diagnostic testing methods are available to guide INOCA management. Treatment of INOCA is evolving, and focuses on cardiac risk factor control, improving ischemia, reducing atherosclerosis progression, and improving angina and quality of life. This review focuses on INOCA, relations to HFpEF, available diagnostics, current and investigational therapeutic strategies, and knowledge gaps in this condition.
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Affiliation(s)
- Puja K Mehta
- Emory Women's Heart Center and Emory Clinical Cardiovascular Research Institute, Division of Cardiology, Emory University School of Medicine, Atlanta, GA, USA.
| | - Jingwen Huang
- J. Willis Hurst Internal Medicine Residency Training Program, Emory University School of Medicine, Atlanta, GA, USA
| | - Rebecca D Levit
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA, USA
| | - Waddah Malas
- Cardiovascular Disease Fellowship Training Program, Loyola Medical Center, Chicago, IL, USA
| | - Nida Waheed
- Cardiovascular Disease Fellowship Training Program, Emory University School of Medicine, Atlanta, GA, USA
| | - C Noel Bairey Merz
- Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA, USA
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15
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Liu Z, Ding Y, Dou G, Wang X, Shan D, He B, Jing J, Chen Y, Yang J. CT-Based Leiden Score Outperforms Confirm Score in Predicting Major Adverse Cardiovascular Events for Diabetic Patients with Suspected Coronary Artery Disease. Korean J Radiol 2022; 23:939-948. [PMID: 36098342 PMCID: PMC9523227 DOI: 10.3348/kjr.2022.0115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 07/16/2022] [Accepted: 08/08/2022] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE Evidence supports the efficacy of coronary computed tomography angiography (CCTA)-based risk scores in cardiovascular risk stratification of patients with suspected coronary artery disease (CAD). We aimed to compare two CCTA-based risk score algorithms, Leiden and Confirm scores, in patients with diabetes mellitus (DM) and suspected CAD. MATERIALS AND METHODS This single-center prospective cohort study consecutively included 1241 DM patients (54.1% male, 60.2 ± 10.4 years) referred for CCTA for suspected CAD in 2015-2017. Leiden and Confirm scores were calculated and stratified as < 5 (reference), 5-20, and > 20 for Leiden and < 14.3 (reference), 14.3-19.5, and > 19.5 for Confirm. Major adverse cardiovascular events (MACE) were defined as the composite outcomes of cardiovascular death, nonfatal myocardial infarction (MI), stroke, and unstable angina requiring hospitalization. The Cox model and Kaplan-Meier method were used to evaluate the effect size of the risk scores on MACE. The area under the curve (AUC) at the median follow-up time was also compared between score algorithms. RESULTS During a median follow-up of 31 months (interquartile range, 27.6-37.3 months), 131 of MACE were recorded, including 17 cardiovascular deaths, 28 nonfatal MIs, 64 unstable anginas requiring hospitalization, and 22 strokes. An incremental incidence of MACE was observed in both Leiden and Confirm scores, with an increase in the scores (log-rank p < 0.001). In the multivariable analysis, compared with Leiden score < 5, the hazard ratios for Leiden scores of 5-20 and > 20 were 2.37 (95% confidence interval [CI]: 1.53-3.69; p < 0.001) and 4.39 (95% CI: 2.40-8.01; p < 0.001), respectively, while the Confirm score did not demonstrate a statistically significant association with the risk of MACE. The Leiden score showed a greater AUC of 0.840 compared to 0.777 for the Confirm score (p < 0.001). CONCLUSION CCTA-based risk score algorithms could be used as reliable cardiovascular risk predictors in patients with DM and suspected CAD, among which the Leiden score outperformed the Confirm score in predicting MACE.
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Affiliation(s)
- Zinuan Liu
- Medical School of Chinese PLA, Beijing, China
- Department of Cardiology, the Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yipu Ding
- Department of Cardiology, the Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
- School of Medicine, Nankai University, Tianjin, China
| | - Guanhua Dou
- Department of Cardiology, the Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Xi Wang
- Department of Cardiology, the Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Dongkai Shan
- Department of Cardiology, the Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Bai He
- Department of Cardiology, the Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Jing Jing
- Department of Cardiology, the Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yundai Chen
- Department of Cardiology, the Sixth Medical Center, Chinese PLA General Hospital, Beijing, China.
| | - Junjie Yang
- Department of Cardiology, the Sixth Medical Center, Chinese PLA General Hospital, Beijing, China.
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16
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Coronary Microvascular Dysfunction in Diabetes Mellitus: Pathogenetic Mechanisms and Potential Therapeutic Options. Biomedicines 2022; 10:biomedicines10092274. [PMID: 36140374 PMCID: PMC9496134 DOI: 10.3390/biomedicines10092274] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/04/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Diabetic patients are frequently affected by coronary microvascular dysfunction (CMD), a condition consisting of a combination of altered vasomotion and long-term structural change to coronary arterioles leading to impaired regulation of blood flow in response to changing cardiomyocyte oxygen requirements. The pathogenesis of this microvascular complication is complex and not completely known, involving several alterations among which hyperglycemia and insulin resistance play particularly central roles leading to oxidative stress, inflammatory activation and altered barrier function of endothelium. CMD significantly contributes to cardiac events such as angina or infarction without obstructive coronary artery disease, as well as heart failure, especially the phenotype associated with preserved ejection fraction, which greatly impact cardiovascular (CV) prognosis. To date, no treatments specifically target this vascular damage, but recent experimental studies and some clinical investigations have produced data in favor of potential beneficial effects on coronary micro vessels caused by two classes of glucose-lowering drugs: glucagon-like peptide 1 (GLP-1)-based therapy and inhibitors of sodium-glucose cotransporter-2 (SGLT2). The purpose of this review is to describe pathophysiological mechanisms, clinical manifestations of CMD with particular reference to diabetes, and to summarize the protective effects of antidiabetic drugs on the myocardial microvascular compartment.
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17
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Baylan U, Korn A, Emmens RW, Schalkwijk CG, Niessen HWM, Krijnen PAJ, Simsek S. Liraglutide treatment attenuates inflammation markers in the cardiac, cerebral and renal microvasculature in streptozotocin-induced diabetic rats. Eur J Clin Invest 2022; 52:e13807. [PMID: 35488737 PMCID: PMC9539594 DOI: 10.1111/eci.13807] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Diabetes mellitus (DM) induces cardiac and cerebral microvascular dysfunction via increased glycation, oxidative stress and endothelial activation. Liraglutide, a glucagon-like peptide-1 analogue, inhibited NOX2 and adhesion molecules in isolated endothelial cells. Here, we have studied how Liraglutide affects advanced glycation, NOX expression and inflammation of the cardiac, cerebral and renal microvasculature in diabetic rats. METHODS DM was induced in Sprague-Dawley rats (n = 15) via intraperitoneal streptozotocin (STZ) injection (60 mg/kg bodyweight). Ten control rats remained nondiabetic. From day 9 post-STZ injection, Liraglutide (200 μg/kg bodyweight; n = 7) or vehicle (n = 8) was injected subcutaneously daily until termination on day 29. The advanced glycation endproduct N-ε-(carboxymethyl)lysine (CML), NOX2, NOX4, ICAM-1 and VCAM-1 were subsequently immunohistochemically analysed and quantified to compare Liraglutide treatment with placebo. RESULTS In the heart, Liraglutide treatment significantly reduced the DM-increased scores/cm2 for CML in both ventricles (from 253 ± 53 to 72 ± 12; p = .003) and atria (343 ± 29 to 122 ± 8; p = .0001) and for NOX2, ICAM-1 and VCAM-1, but not for NOX4. Also in the cerebrum and cerebellum of the brain, Liraglutide significantly reduced the scores/cm2 for CML (to 60 ± 7 (p = .0005) and 47 ± 13 (p = .02), respectively), and for NOX2 and NOX4. In the kidney, the DM-induced expression of ICAM-1 and VCAM-1 was decreased in the blood vessels and glomeruli by Liraglutide treatment. Liraglutide did not affect blood glucose levels or bodyweight. CONCLUSIONS Our study implies that Liraglutide protects the cardiac, cerebral and renal microvasculature against diabetes-induced dysfunction, independent of lowering blood glucose in a type 1 diabetes rat model.
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Affiliation(s)
- Umit Baylan
- Department of Pathology, Amsterdam UMC location VUmc, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Amber Korn
- Department of Pathology, Amsterdam UMC location VUmc, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Reindert W Emmens
- Department of Pathology, Amsterdam UMC location VUmc, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Casper G Schalkwijk
- Department of Internal Medicine, Maastricht University Medical Centre, Maastricht, the Netherlands.,Cardiovascular Research Institute Maastricht (CARIM), Maastricht, the Netherlands
| | - Hans W M Niessen
- Department of Pathology, Amsterdam UMC location VUmc, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Paul A J Krijnen
- Department of Pathology, Amsterdam UMC location VUmc, Amsterdam, the Netherlands.,Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Suat Simsek
- Department of Internal Medicine, Alkmaar, the Netherlands.,Department of Internal Medicine, Amsterdam UMC location VUmc, Amsterdam, the Netherlands
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18
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Cecere A, Kerkhof PLM, Civieri G, Angelini A, Gambino A, Fraiese A, Bottio T, Osto E, Famoso G, Fedrigo M, Giacomin E, Toscano G, Montisci R, Iliceto S, Gerosa G, Tona F. Coronary Flow Evaluation in Heart Transplant Patients Compared to Healthy Controls Documents the Superiority of Coronary Flow Velocity Reserve Companion as Diagnostic and Prognostic Tool. Front Cardiovasc Med 2022; 9:887370. [PMID: 35811712 PMCID: PMC9263115 DOI: 10.3389/fcvm.2022.887370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundDistinct contributions by functional or structural alterations of coronary microcirculation in heart transplantation (HT) and their prognostic role have not been fully elucidated. We aimed to identify the mechanisms of coronary microvascular dysfunction (CMD) in HT and their prognostic implications.Methods134 patients, surviving at least 5 years after HT, without evidence of angiographic vasculopathy or symptoms/signs of rejection were included. 50 healthy volunteers served as controls. All underwent the assessment of rest and hyperemic coronary diastolic peak flow velocity (DPVr and DPVh) and coronary flow velocity reserve (CFVR) and its inherent companion that is based on the adjusted quadratic mean: CCFVR = √{(DPVr)2 + (DPVh)2}. Additionally, basal and hyperemic coronary microvascular resistance (BMR and HMR) were estimated.ResultsBased on CFVR and DPVh, HT patients can be assigned to four endotypes: endotype 1, discordant with preserved CFVR (3.1 ± 0.4); endotype 2, concordant with preserved CFVR (3.4 ± 0.5); endotype 3, concordant with impaired CFVR (1.8 ± 0.3) and endotype 4, discordant with impaired CFVR (2.0 ± 0.2). Intriguingly, endotype 1 showed lower DPVr (p < 0.0001) and lower DPVh (p < 0.0001) than controls with lower CFVR (p < 0.0001) and lower CCFVR (p < 0.0001) than controls. Moreover, both BMR and HMR were higher in endotype 1 than in controls (p = 0.001 and p < 0.0001, respectively), suggesting structural microvascular remodeling. Conversely, endotype 2 was comparable to controls. A 13/32 (41%) patients in endotype 1 died in a follow up of 28 years and mortality rate was comparable to endotype 3 (14/31, 45%). However, CCFVR was < 80 cm/s in all 13 deaths of endotype 1 (characterized by preserved CFVR). At multivariable analysis, CMD, DPVh < 75 cm/s and CCFVR < 80 cm/s were independent predictors of mortality. The inclusion of CCFVR < 80 cm/s to models with clinical indicators of mortality better predicted survival, compared to only adding CMD or DPVh < 75 cm/s (p < 0.0001 and p = 0.03, respectively).ConclusionA normal CFVR could hide detection of microvasculopathy with high flow resistance and low flow velocities at rest. This microvasculopathy seems to be secondary to factors unrelated to HT (less rejections and more often diabetes). The combined use of CFVR and CCFVR provides more complete clinical and prognostic information on coronary microvasculopathy in HT.
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Affiliation(s)
- Annagrazia Cecere
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | - Peter L. M. Kerkhof
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Amsterdam, Netherlands
| | - Giovanni Civieri
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | - Annalisa Angelini
- Cardiovascular Pathology Unit, Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | - Antonio Gambino
- Division of Cardiac Surgery, University of Padua, Padua, Italy
| | - Angela Fraiese
- Division of Cardiac Surgery, University of Padua, Padua, Italy
| | - Tomaso Bottio
- Division of Cardiac Surgery, University of Padua, Padua, Italy
| | - Elena Osto
- Cardiology, University Heart Center, University Hospital of Zürich, Zurich, Switzerland
- Institute of Clinical Chemistry, University of Zurich, University Hospital of Zürich, Zurich, Switzerland
| | - Giulia Famoso
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | - Marny Fedrigo
- Cardiovascular Pathology Unit, Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | - Enrico Giacomin
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | | | - Roberta Montisci
- Clinical Cardiology, AOU Cagliari, Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Sabino Iliceto
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
| | - Gino Gerosa
- Division of Cardiac Surgery, University of Padua, Padua, Italy
| | - Francesco Tona
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padua, Padua, Italy
- *Correspondence: Francesco Tona,
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19
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Loai S, Sun X, Husain M, Laflamme MA, Yeger H, Nunes SS, Cheng HLM. Microvascular Dysfunction in Skeletal Muscle Precedes Myocardial Vascular Changes in Diabetic Cardiomyopathy: Sex-Dependent Differences. Front Cardiovasc Med 2022; 9:886687. [PMID: 35665251 PMCID: PMC9157579 DOI: 10.3389/fcvm.2022.886687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/28/2022] [Indexed: 11/13/2022] Open
Abstract
AimTo uncover sex-related microvascular abnormalities that underlie the early presentation of reduced perfusion in leg skeletal muscle in a type II rat model of diabetic cardiomyopathy.Methods and ResultsDiabetes was induced using a non-obese, diet-based, low-dose streptozotocin model in adult female (18 diabetic, 9 control) and male rats (29 diabetic, 11 control). Time-course monitoring over 12 months following diabetes induction was performed using echocardiography, treadmill exercise, photoacoustic imaging, flow-mediated dilation (FMD), histopathology, and immunohistochemistry. Diabetic rats maintained normal weights. Hypertension appeared late in both diabetic males (7 months) and females (10 months), while only diabetic males had elevated cholesterol (7 months). On echocardiography, all diabetic animals maintained normal ejection fraction and exhibited diastolic dysfunction, mild systolic dysfunction, and a slightly enlarged left ventricle. Exercise tolerance declined progressively and early in males (4 months), later in females (8 months); FMD showed lower baseline femoral arterial flow but unchanged reactivity in both sexes (5 months); and photoacoustic imaging showed lower tissue oxygen saturation in the legs of diabetic males (4 months) and diabetic females (10 months). Myocardial perfusion was normal in both sexes. Histopathology at the final timepoint of Month 10 (males) and Month 12 (females) revealed that myocardial microvasculature was normal in both vessel density and structure, thus explaining normal perfusion on imaging. However, leg muscle microvasculature exhibited perivascular smooth muscle thickening around small arterioles in diabetic females and around large arterioles in diabetic males, explaining the depressed readings on photoacoustic and FMD. Histology also confirmed the absence of commonly reported HFpEF markers, including microvessel rarefaction, myocardial fibrosis, and left ventricular hypertrophy.ConclusionExercise intolerance manifesting early in the progression of diabetic cardiomyopathy can be attributed to decreased perfusion to the leg skeletal muscle due to perivascular smooth muscle thickening around small arterioles in females and large arterioles in males. This microvascular abnormality was absent in the myocardium, where perfusion levels remained normal throughout the study. We conclude that although skeletal muscle microvascular dysfunction of the vasculature presents at different levels depending on sex, it consistently presents early in both sexes prior to overt cardiac changes such as rarefaction, fibrosis, or hypertrophy.
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Affiliation(s)
- Sadi Loai
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, ON, Canada
| | - Xuetao Sun
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
| | - Mansoor Husain
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada
- Ted Rogers Centre for Heart Research, Toronto, ON, Canada
| | - Michael A. Laflamme
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada
- McEwen Stem Cell Institute, University Health Network, Toronto, ON, Canada
- Laboratory of Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Herman Yeger
- Laboratory of Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada
| | - Sara S. Nunes
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Laboratory of Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Hai-Ling Margaret Cheng
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, ON, Canada
- The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
- *Correspondence: Hai-Ling Margaret Cheng
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20
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Tona F, Osto E, Kerkhof PLM, Montisci R, Famoso G, Lorenzoni G, De Michieli L, Cecere A, Zanetti I, Civieri G, Iliceto S, Piaserico S. Multiparametric analysis of coronary flow in psoriasis using a coronary flow reserve companion. Eur J Clin Invest 2022; 52:e13711. [PMID: 34780064 PMCID: PMC9286413 DOI: 10.1111/eci.13711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Coronary microvascular dysfunction (CMD) is usually evaluated measuring coronary flow velocity reserve (CFVR). A more comprehensive analysis of CFVR including additional consideration of the associated logical companion-CFVR, where hyperemic diastolic coronary flow velocity may act as surrogate, was applied in this study to elucidate the mechanism of CMD in psoriasis. METHODS AND RESULTS Coronary flow velocity reserve was analysed using transthoracic echocardiographs of 127 psoriasis patients (age 36 ± 8 years; 104 males) and of 52 sex- and age-matched healthy controls. CFVR determination was repeated in the patient subgroup (n = 78) receiving anti-inflammatory therapy. Baseline and hyperemic microvascular resistance (MR) were calculated. CMD was defined as CFVR ≤ 2.5. Four endotypes of CMD were identified referring to concordant or discordant impairments of hyperemic flow or CFVR. We evaluated the companion-CFVR, as derived from the quadratic mean of hyperemic and diastolic flow velocity at rest. Coronary flow parameters, including CFVR (p = 0.01), were different among the two endotypes having CFVR > 2.5. Specifically, all 11 (14%) patients with CFVR deterioration despite therapy, belonged to endotype 1, and had higher baseline and hyperemic MR (p < 0.0001, both). Interestingly, while CFVR was comparable in patients with worsened versus those with improved CFVR, the companion-CFVR could discriminate by being lower in patients with worsened CFVR (p = 0.01). CONCLUSIONS The reduced CFVR in psoriasis is driven by decreased companion-CFVR, combined with increased hyperemic MR. Adoption of the mandatory companion-CFVR enables a personalized characterization superior to that achieved by exclusive consideration of CFVR.
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Affiliation(s)
- Francesco Tona
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Elena Osto
- University Heart Center, University Hospital Zurich & University of Zurich, Zurich, Switzerland.,Institute of Clinical Chemistry, University Hospital Zurich & University of Zurich, Zurich, Switzerland
| | - Peter L M Kerkhof
- Amsterdam University Medical Centers, VUmc, Radiology and Nuclear Medicine, Amsterdam, The Netherlands
| | - Roberta Montisci
- Clinical Cardiology, Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Giulia Famoso
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Giulia Lorenzoni
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Laura De Michieli
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Annagrazia Cecere
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Irene Zanetti
- Dermatology Unit, Department of Medicine, University of Padova, Padova, Italy
| | - Giovanni Civieri
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Sabino Iliceto
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy
| | - Stefano Piaserico
- Dermatology Unit, Department of Medicine, University of Padova, Padova, Italy
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21
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Gallinoro E, Paolisso P, Candreva A, Bermpeis K, Fabbricatore D, Esposito G, Bertolone D, Fernandez Peregrina E, Munhoz D, Mileva N, Penicka M, Bartunek J, Vanderheyden M, Wyffels E, Sonck J, Collet C, De Bruyne B, Barbato E. Microvascular Dysfunction in Patients With Type II Diabetes Mellitus: Invasive Assessment of Absolute Coronary Blood Flow and Microvascular Resistance Reserve. Front Cardiovasc Med 2021; 8:765071. [PMID: 34738020 PMCID: PMC8562107 DOI: 10.3389/fcvm.2021.765071] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/22/2021] [Indexed: 01/09/2023] Open
Abstract
Background: Coronary microvascular dysfunction (CMD) is an early feature of diabetic cardiomyopathy, which usually precedes the onset of diastolic and systolic dysfunction. Continuous intracoronary thermodilution allows an accurate and reproducible assessment of absolute coronary blood flow and microvascular resistance thus allowing the evaluation of coronary flow reserve (CFR) and Microvascular Resistance Reserve (MRR), a novel index specific for microvascular function, which is independent from the myocardial mass. In the present study we compared absolute coronary flow and resistance, CFR and MRR assessed by continuous intracoronary thermodilution in diabetic vs. non-diabetic patients. Left atrial reservoir strain (LASr), an early marker of diastolic dysfunction was compared between the two groups. Methods: In this observational retrospective study, 108 patients with suspected angina and non-obstructive coronary artery disease (NOCAD) consecutively undergoing elective coronary angiography (CAG) from September 2018 to June 2021 were enrolled. The invasive functional assessment of microvascular function was performed in the left anterior descending artery (LAD) with intracoronary continuous thermodilution. Patients were classified according to the presence of DM. Absolute resting and hyperemic coronary blood flow (in mL/min) and resistance (in WU) were compared between the two cohorts. FFR was measured to assess coronary epicardial lesions, while CFR and MRR were calculated to assess microvascular function. LAS, assessed by speckle tracking echocardiography, was used to detect early myocardial structural changes potentially associated with microvascular dysfunction. Results: The median FFR value was 0.83 [0.79-0.87] without any significant difference between the two groups. Absolute resting and hyperemic flow in the left anterior descending coronary were similar between diabetic and non-diabetic patients. Similarly, resting and hyperemic resistances did not change significantly between the two groups. In the DM cohort the CFR and MRR were significantly lower compared to the control group (CFR = 2.38 ± 0.61 and 2.88 ± 0.82; MRR = 2.79 ± 0.87 and 3.48 ± 1.02 for diabetic and non-diabetic patients respectively, [p < 0.05 for both]). Likewise, diabetic patients had a significantly lower reservoir, contractile and conductive LAS (all p < 0.05). Conclusions: Compared with non-diabetic patients, CFR and MRR were lower in patients with DM and non-obstructive epicardial coronary arteries, while both resting and hyperemic coronary flow and resistance were similar. LASr was lower in diabetic patients, confirming the presence of a subclinical diastolic dysfunction associated to the microcirculatory impairment. Continuous intracoronary thermodilution-derived indexes provide a reliable and operator-independent assessment of coronary macro- and microvasculature and might potentially facilitate widespread clinical adoption of invasive physiologic assessment of suspected microvascular disease.
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Affiliation(s)
- Emanuele Gallinoro
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
- Department of Translational Medical Sciences, University of Campania ‘Luigi Vanvitelli', Naples, Italy
| | - Pasquale Paolisso
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | | | | | - Davide Fabbricatore
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Giuseppe Esposito
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Dario Bertolone
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | | | - Daniel Munhoz
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
- Discipline of Cardiology, Department of Internal Clinical Medicine, University of Campinas, Campinas, Brazil
| | - Niya Mileva
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
| | | | | | | | - Eric Wyffels
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
| | - Jeroen Sonck
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Carlos Collet
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
| | - Bernard De Bruyne
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Emanuele Barbato
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
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22
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Kostara CE, Tsiafoulis CG, Bairaktari ET, Tsimihodimos V. Altered RBC membrane lipidome: A possible etiopathogenic link for the microvascular impairment in Type 2 diabetes. J Diabetes Complications 2021; 35:107998. [PMID: 34334328 DOI: 10.1016/j.jdiacomp.2021.107998] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/09/2021] [Accepted: 07/21/2021] [Indexed: 11/19/2022]
Abstract
AIMS Disturbances in red blood cells' (RBCs) membrane structure, that result in altered rheological properties, have been implicated in the pathogenesis of microvascular complications of diabetes mellitus(T2DM). However, the compositional alterations in RBCs membranes of T2DM patients have not been characterized in detail. METHODS NMR-based lipidomic approach used for the global investigation of the lipidome of RBCs membrane in 20 newly diagnosed T2DM patients. Twenty healthy individuals served as controls. RESULTS In the lipidomic analysis, the discrimination power among the two groups was of high significance. T2DM patients characterized by an increased content of cholesterol, total sphingolipids, sphingomyelin and glycolipids, and decreased total phospholipids, mainly due to phosphatidylethanolamine, total ether glycerolipids and plasmalogen-phospholipids, and higher cholesterol-to-phospholipids molecular ratio compared to controls. In T2DM, lipids were esterified with saturated rather than unsaturated fatty acids, an atherogenic pattern that may be involved in the impairment of membrane fluidity and rigidity. CONCLUSIONS NMR-based lipidomic analysis of RBCs can provide insights into molecular lipid features of membrane microenvironment that influence their vital function and rheological behavior in microvascular network in T2DM.Early identification of these disturbances, even before the onset of diabetes, could critically help to the development of novel preventative and curative therapies for reducing the risk of microvascular dysfunction.
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Affiliation(s)
- Christina E Kostara
- Laboratory of Clinical Chemistry, Faculty of Medicine, School of Health Sciences, University of Ioannina, 451 10 Ioannina, Greece.
| | - Constantinos G Tsiafoulis
- NMR Center and Laboratory of Analytical Chemistry, Department of Chemistry University of Ioannina, University of Ioannina, 451 10 Ioannina, Greece
| | - Eleni T Bairaktari
- Laboratory of Clinical Chemistry, Faculty of Medicine, School of Health Sciences, University of Ioannina, 451 10 Ioannina, Greece
| | - Vasilis Tsimihodimos
- Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Ioannina, 451 10 Ioannina, Greece
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23
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Qi Y, Li L, Feng G, Shao C, Cai Y, Wang Z. Research Progress of Imaging Methods for Detection of Microvascular Angina Pectoris in Diabetic Patients. Front Cardiovasc Med 2021; 8:713971. [PMID: 34621798 PMCID: PMC8490615 DOI: 10.3389/fcvm.2021.713971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/27/2021] [Indexed: 12/28/2022] Open
Abstract
Diabetes is a complex metabolic disease characterized by hyperglycemia. Its complications are various, often involving the heart, brain, kidney, and other essential organs. At present, the number of diabetic patients in the world is growing day by day. The cardiovascular disease caused by diabetes has dramatically affected the quality of life of diabetic patients. It is the leading cause of death of diabetic patients. Diabetic patients often suffer from microvascular angina pectoris without obstructive coronary artery disease. Still, there are typical ECG ischemia and angina pectoris, that is, chest pain and dyspnea under exercise. Unlike obstructive coronary diseases, nitrate does not affect chest pain caused by coronary microvascular angina in most cases. With the increasing emphasis on diabetic microvascular angina, the need for accurate diagnosis of the disease is also increasing. We can use SPECT, PET, CMR, MCE, and other methods to evaluate coronary microvascular function. SPECT is commonly used in clinical practice, and PET is considered the gold standard for non-invasive detection of myocardial blood flow. This article mainly introduces the research progress of these imaging methods in detecting microvascular angina in diabetic patients.
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Affiliation(s)
- Yiming Qi
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Lihua Li
- Department of Pathology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Guoquan Feng
- Department of Radiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Chen Shao
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Yue Cai
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Zhongqun Wang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
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24
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Sinha A, Rahman H, Webb A, Shah AM, Perera D. Untangling the pathophysiologic link between coronary microvascular dysfunction and heart failure with preserved ejection fraction. Eur Heart J 2021; 42:4431-4441. [PMID: 34529791 PMCID: PMC8599060 DOI: 10.1093/eurheartj/ehab653] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/10/2021] [Accepted: 09/03/2021] [Indexed: 01/03/2023] Open
Abstract
Coronary microvascular disease (CMD), characterized by impaired coronary flow reserve (CFR), is a common finding in patients with stable angina. Impaired CFR, in the absence of obstructive coronary artery disease, is also present in up to 75% of patients with heart failure with preserved ejection fraction (HFpEF). Heart failure with preserved ejection fraction is a heterogeneous syndrome comprising distinct endotypes and it has been hypothesized that CMD lies at the centre of the pathogenesis of one such entity: the CMD–HFpEF endotype. This article provides a contemporary review of the pathophysiology underlying CMD, with a focus on the mechanistic link between CMD and HFpEF. We discuss the central role played by subendocardial ischaemia and impaired lusitropy in the development of CMD–HFpEF, as well as the clinical and research implications of the CMD–HFpEF mechanistic link. Future prospective follow-up studies detailing outcomes in patients with CMD and HFpEF are much needed to enhance our understanding of the pathological processes driving these conditions, which may lead to the development of physiology-stratified therapy to improve the quality of life and prognosis in these patients.
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Affiliation(s)
- Aish Sinha
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, King's College London, St. Thomas' Hospital, Westminster bridge road, London SE1 7EH, UK
| | - Haseeb Rahman
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, King's College London, St. Thomas' Hospital, Westminster bridge road, London SE1 7EH, UK
| | - Andrew Webb
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, King's College London, St. Thomas' Hospital, Westminster bridge road, London SE1 7EH, UK
| | - Ajay M Shah
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, King's College London, St. Thomas' Hospital, Westminster bridge road, London SE1 7EH, UK
| | - Divaka Perera
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, King's College London, St. Thomas' Hospital, Westminster bridge road, London SE1 7EH, UK
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25
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Mineralocorticoid receptor blockade normalizes coronary resistance in obese swine independent of functional alterations in K v channels. Basic Res Cardiol 2021; 116:35. [PMID: 34018061 DOI: 10.1007/s00395-021-00879-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
Impaired coronary microvascular function (e.g., reduced dilation and coronary flow reserve) predicts cardiac mortality in obesity, yet underlying mechanisms and potential therapeutic strategies remain poorly understood. Mineralocorticoid receptor (MR) antagonism improves coronary microvascular function in obese humans and animals. Whether MR blockade improves in vivo regulation of coronary flow, a process involving voltage-dependent K+ (Kv) channel activation, or reduces coronary structural remodeling in obesity is unclear. Thus, the goals of this investigation were to determine the effects of obesity on coronary responsiveness to reductions in arterial PO2 and potential involvement of Kv channels and whether the benefit of MR blockade involves improved coronary Kv function or altered passive structural properties of the coronary microcirculation. Hypoxemia increased coronary blood flow similarly in lean and obese swine; however, baseline coronary vascular resistance was significantly higher in obese swine. Inhibition of Kv channels reduced coronary blood flow and augmented coronary resistance under baseline conditions in lean but not obese swine and had no impact on hypoxemic coronary vasodilation. Chronic MR inhibition in obese swine normalized baseline coronary resistance, did not influence hypoxemic coronary vasodilation, and did not restore coronary Kv function (assessed in vivo, ex vivo, and via patch clamping). Lastly, MR blockade prevented obesity-associated coronary arteriolar stiffening independent of cardiac capillary density and changes in cardiac function. These data indicate that chronic MR inhibition prevents increased coronary resistance in obesity independent of Kv channel function and is associated with mitigation of obesity-mediated coronary arteriolar stiffening.
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26
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Merkus D, Muller-Delp J, Heaps CL. Coronary microvascular adaptations distal to epicardial artery stenosis. Am J Physiol Heart Circ Physiol 2021; 320:H2351-H2370. [PMID: 33961506 DOI: 10.1152/ajpheart.00992.2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Until recently, epicardial coronary stenosis has been considered the primary outcome of coronary heart disease, and clinical interventions have been dedicated primarily to the identification and removal of flow-limiting stenoses. However, a growing body of literature indicates that both epicardial stenosis and microvascular dysfunction contribute to damaging myocardial ischemia. In this review, we discuss the coexistence of macro- and microvascular disease, and how the structure and function of the distal microcirculation is impacted by the hemodynamic consequences of an epicardial, flow-limiting stenosis. Mechanisms of endothelial dysfunction as well as alterations of smooth muscle function in the coronary microcirculation distal to stenosis are discussed. Risk factors including diabetes, metabolic syndrome, and aging exacerbate microvascular dysfunction in the myocardium distal to a stenosis, and our current understanding of the role of these factors in limiting collateralization and angiogenesis of the ischemic myocardium is presented. Importantly, exercise training has been shown to promote collateral growth and improve microvascular function distal to stenosis; thus, the current literature reporting the mechanisms that underlie the beneficial effects of exercise training in the microcirculation distal to epicardial stenosis is reviewed. We also discuss recent studies of therapeutic interventions designed to improve microvascular function and stimulate angiogenesis in clinically relevant animal models of epicardial stenosis and microvascular disease. Finally, microvascular adaptation to removal of epicardial stenosis is considered.
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Affiliation(s)
- Daphne Merkus
- Institute for Surgical Research, Walter Brendel Center of Experimental Medicine (WBex), University Clinic, LMU Munich, Munich, Germany.,German Center for Cardiovascular Research (DZHK), Munich Heart Alliance (MHA), Munich, Germany.,Department of Cardiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Judy Muller-Delp
- Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, Florida
| | - Cristine L Heaps
- Department of Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas.,Michael E. DeBakey Institute for Comparative Cardiovascular Science and Biomedical Devices, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas
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27
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Nishi T, Saito Y, Kitahara H, Nishi T, Fujimoto Y, Kobayashi Y. Coronary Flow Reserve and Glycemic Variability in Patients with Coronary Artery Disease. Intern Med 2021; 60:1151-1158. [PMID: 33132339 PMCID: PMC8112971 DOI: 10.2169/internalmedicine.6158-20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Objective Glycemic variability is being increasingly recognized as an early indicator of glucose metabolic disorder and may contribute to the development of diabetic vascular complications, such as coronary microvascular dysfunction. The present study sought to investigate the relationship between coronary microvascular function assessed by intracoronary thermodilution method and glycemic variability on a continuous glucose monitoring system (CGMS). Methods We prospectively enrolled 40 patients with or without known diabetes mellitus who had epicardial coronary artery disease referred for coronary angiography and were not treated with diabetic medications. Of these, two had a significant stenosis in the left main coronary artery and were therefore excluded from the analyses. In the end, 38 patients were equipped with a CGMS and underwent intracoronary physiological assessments in the unobstructed left anterior descending artery. The mean amplitude of glycemic excursion (MAGE) and standard deviation were calculated from the obtained CGMS data as indicators of glucose variability. Results Coronary flow reserve (CFR) was negatively correlated with MAGE (r=-0.328, p=0.044) and standard deviation (r=-0.339, p=0.037) on CGMS, while the index of microcirculatory resistance showed no such correlation. Multivariable linear regression analyses showed that MAGE on CGMS was significantly associated with CFR after adjusting for age, sex, fractional flow reserve and hemoglobin A1c. Conclusion Higher MAGE on CGMS was associated with reduced CFR in stable patients with coronary artery disease, suggesting a potential effect of glycemic variability on coronary microvascular flow regulation. A further study with a larger sample size needs to be conducted to confirm our findings.
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Affiliation(s)
- Takeshi Nishi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Japan
| | - Yuichi Saito
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Japan
| | - Hideki Kitahara
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Japan
| | - Tomoko Nishi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Japan
| | - Yoshihide Fujimoto
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Japan
| | - Yoshio Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Japan
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28
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Sinha A, Rahman H, Perera D. Coronary microvascular disease: current concepts of pathophysiology, diagnosis and management. Cardiovasc Endocrinol Metab 2021; 10:22-30. [PMID: 33634252 PMCID: PMC7901821 DOI: 10.1097/xce.0000000000000223] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/23/2020] [Indexed: 12/28/2022]
Abstract
Coronary microvascular disease (CMD) is present in 30% of patients with angina and is associated with increased morbidity and mortality. We now have an improved understanding of the pathophysiology of CMD and the invasive and noninvasive tests that can be used to make the diagnosis. Recent studies have shown that management of CMD guided by physiological testing yields better results than empirical treatment. Despite major advances in diagnosing and stratifying this condition, therapeutic strategies remain limited and poorly defined. This review article discusses recent advances in understanding the pathophysiology of CMD, the modalities that are available to diagnose it clinically, current management options and a look at what is in store for the future.
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Affiliation(s)
- Aish Sinha
- The BHF Centre of Excellence and the NIHR Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, King’s College London, London, UK
| | - Haseeb Rahman
- The BHF Centre of Excellence and the NIHR Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, King’s College London, London, UK
| | - Divaka Perera
- The BHF Centre of Excellence and the NIHR Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, King’s College London, London, UK
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29
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Horton WB, Barrett EJ. Microvascular Dysfunction in Diabetes Mellitus and Cardiometabolic Disease. Endocr Rev 2021; 42:29-55. [PMID: 33125468 PMCID: PMC7846151 DOI: 10.1210/endrev/bnaa025] [Citation(s) in RCA: 115] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Indexed: 02/07/2023]
Abstract
This review takes an inclusive approach to microvascular dysfunction in diabetes mellitus and cardiometabolic disease. In virtually every organ, dynamic interactions between the microvasculature and resident tissue elements normally modulate vascular and tissue function in a homeostatic fashion. This regulation is disordered by diabetes mellitus, by hypertension, by obesity, and by dyslipidemia individually (or combined in cardiometabolic disease), with dysfunction serving as an early marker of change. In particular, we suggest that the familiar retinal, renal, and neural complications of diabetes mellitus are late-stage manifestations of microvascular injury that begins years earlier and is often abetted by other cardiometabolic disease elements (eg, hypertension, obesity, dyslipidemia). We focus on evidence that microvascular dysfunction precedes anatomic microvascular disease in these organs as well as in heart, muscle, and brain. We suggest that early on, diabetes mellitus and/or cardiometabolic disease can each cause reversible microvascular injury with accompanying dysfunction, which in time may or may not become irreversible and anatomically identifiable disease (eg, vascular basement membrane thickening, capillary rarefaction, pericyte loss, etc.). Consequences can include the familiar vision loss, renal insufficiency, and neuropathy, but also heart failure, sarcopenia, cognitive impairment, and escalating metabolic dysfunction. Our understanding of normal microvascular function and early dysfunction is rapidly evolving, aided by innovative genetic and imaging tools. This is leading, in tissues like the retina, to testing novel preventive interventions at early, reversible stages of microvascular injury. Great hope lies in the possibility that some of these interventions may develop into effective therapies.
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Affiliation(s)
- William B Horton
- Division of Endocrinology and Metabolism, Department of Medicine
| | - Eugene J Barrett
- Division of Endocrinology and Metabolism, Department of Medicine.,Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, Virginia
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30
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Sinha A, Rahman H, Perera D. Ischaemia without obstructive coronary artery disease: the pathophysiology of microvascular dysfunction. Curr Opin Cardiol 2020; 35:720-725. [PMID: 32852345 DOI: 10.1097/hco.0000000000000788] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
PURPOSE OF REVIEW Nearly one-third of patients presenting with angina have unobstructed epicardial coronary arteries and evidence of coronary microvascular disease. Up until recently, the pathophysiology of coronary microvascular disease has been poorly understood, resulting in limited effective therapeutic options in these patients. As a result, patients with coronary microvascular disease continue to suffer from a poor quality of life and adverse cardiovascular outcomes. RECENT FINDINGS Recent mechanistic studies have improved our understanding of the pathophysiology underlying coronary microvascular dysfunction; these studies have implicated the nitric oxide and endothelin pathways as the main drivers. The aim of this article is to review our current understanding of the pathophysiology of ischaemia in patients with coronary microvascular disease. SUMMARY Patients with angina who have coronary microvascular disease, but no obstructive coronary artery disease, are unable to augment their coronary blood flow in response to physiological stress, thereby predisposing them to myocardial ischaemia as a result of supply:demand mismatch in the myocardium. In addition to abnormalities of vascular resistance, perturbations in cardiac-coronary coupling also contribute to ischaemia in these patients. Although impaired flow reserve is the diagnostic hallmark, mechanistic studies have demonstrated that the underlying pathophysiology is heterogeneous. At present, two main endotypes have been identified, which can be readily differentiated on the basis of minimal microvascular resistance. A better understanding of the pathophysiology and mechanisms driving ischaemia in coronary microvascular dysfunction may stimulate the development of individualised therapies that may lead to an improvement in patients' quality of life and prognosis.
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Affiliation(s)
- Aish Sinha
- The BHF Centre of Excellence and the NIHR Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, King's College London, London, UK
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31
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Vancheri F, Longo G, Vancheri S, Henein M. Coronary Microvascular Dysfunction. J Clin Med 2020; 9:E2880. [PMID: 32899944 PMCID: PMC7563453 DOI: 10.3390/jcm9092880] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/02/2020] [Accepted: 09/02/2020] [Indexed: 01/09/2023] Open
Abstract
Many patients with chest pain undergoing coronary angiography do not show significant obstructive coronary lesions. A substantial proportion of these patients have abnormalities in the function and structure of coronary microcirculation due to endothelial and smooth muscle cell dysfunction. The coronary microcirculation has a fundamental role in the regulation of coronary blood flow in response to cardiac oxygen requirements. Impairment of this mechanism, defined as coronary microvascular dysfunction (CMD), carries an increased risk of adverse cardiovascular clinical outcomes. Coronary endothelial dysfunction accounts for approximately two-thirds of clinical conditions presenting with symptoms and signs of myocardial ischemia without obstructive coronary disease, termed "ischemia with non-obstructive coronary artery disease" (INOCA) and for a small proportion of "myocardial infarction with non-obstructive coronary artery disease" (MINOCA). More frequently, the clinical presentation of INOCA is microvascular angina due to CMD, while some patients present vasospastic angina due to epicardial spasm, and mixed epicardial and microvascular forms. CMD may be associated with focal and diffuse epicardial coronary atherosclerosis, which may reinforce each other. Both INOCA and MINOCA are more common in females. Clinical classification of CMD includes the association with conditions in which atherosclerosis has limited relevance, with non-obstructive atherosclerosis, and with obstructive atherosclerosis. Several studies already exist which support the evidence that CMD is part of systemic microvascular disease involving multiple organs, such as brain and kidney. Moreover, CMD is strongly associated with the development of heart failure with preserved ejection fraction (HFpEF), diabetes, hypertensive heart disease, and also chronic inflammatory and autoimmune diseases. Since coronary microcirculation is not visible on invasive angiography or computed tomographic coronary angiography (CTCA), the diagnosis of CMD is usually based on functional assessment of microcirculation, which can be performed by both invasive and non-invasive methods, including the assessment of delayed flow of contrast during angiography, measurement of coronary flow reserve (CFR) and index of microvascular resistance (IMR), evaluation of angina induced by intracoronary acetylcholine infusion, and assessment of myocardial perfusion by positron emission tomography (PET) and magnetic resonance (CMR).
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Affiliation(s)
- Federico Vancheri
- Department of Internal Medicine, S.Elia Hospital, 93100 Caltanissetta, Italy
| | - Giovanni Longo
- Cardiovascular and Interventional Department, S.Elia Hospital, 93100 Caltanissetta, Italy;
| | - Sergio Vancheri
- Radiology Department, I.R.C.C.S. Policlinico San Matteo, 27100 Pavia, Italy;
| | - Michael Henein
- Institute of Public Health and Clinical Medicine, Umea University, SE-90187 Umea, Sweden;
- Department of Fluid Mechanics, Brunel University, Middlesex, London UB8 3PH, UK
- Molecular and Nuclear Research Institute, St George’s University, London SW17 0RE, UK
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32
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Jung CH, Cho YY, Choi D, Kim BY, Kim CH, Mok JO. Relationship of Sarcopenia with Microcirculation Measured by Skin Perfusion Pressure in Patients with Type 2 Diabetes. Endocrinol Metab (Seoul) 2020; 35:578-586. [PMID: 32981300 PMCID: PMC7520593 DOI: 10.3803/enm.2020.679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/16/2020] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Few studies have examined the relationship of sarcopenia with the microcirculation. The current study investigated the relationship of sarcopenia with microcirculatory function, as assessed by skin perfusion pressure (SPP), in type 2 diabetes mellitus (T2DM) patients. METHODS In total, 102 T2DM patients who underwent SPP measurements and bioelectrical impedance analysis (BIA) were enrolled in this cross-sectional study. SPP was assessed using the laser Doppler technique. Sarcopenia was defined as low height-adjusted appendicular muscle mass (men, <7 kg/m2; women, <5.7 kg/m2) using BIA. We divided the participants into two groups based on SPP (≤50 and >50 mm Hg), and an SPP below 50 mm Hg was considered to reflect impaired microcirculation. RESULTS Fourteen patients (13.7%) were diagnosed with impaired microcirculatory function of the lower limb based on SPP. The prevalence of sarcopenia in all subjects was 11.8%, but the percentage of patients with an SPP ≤50 mm Hg who had sarcopenia was more than triple that of patients with an SPP >50 mm Hg (28.6% vs. 9.1%, P=0.036). A significant positive correlation was found between SPP and appendicular muscle mass adjusted for height (P=0.041 for right-sided SPP). Multiple logistic regression analysis showed that patients with sarcopenia had an odds ratio of 4.1 (95% confidence interval, 1.01 to 24.9) for having an SPP ≤50 mm Hg even after adjustment for confounding factors. CONCLUSION These results suggest that sarcopenia may be significantly associated with impaired microcirculation in patients with T2DM. Nonetheless, the small number of patients and wide CI require cautious interpretation of the results.
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Affiliation(s)
- Chan-Hee Jung
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Yoon Young Cho
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Dughyun Choi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Bo-Yeon Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Chul-Hee Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Ji-Oh Mok
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
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33
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Rahman H, Demir OM, Khan F, Ryan M, Ellis H, Mills MT, Chiribiri A, Webb A, Perera D. Physiological Stratification of Patients With Angina Due to Coronary Microvascular Dysfunction. J Am Coll Cardiol 2020; 75:2538-2549. [PMID: 32439003 PMCID: PMC7242900 DOI: 10.1016/j.jacc.2020.03.051] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/10/2020] [Accepted: 03/17/2020] [Indexed: 12/26/2022]
Abstract
BACKGROUND Coronary microvascular dysfunction (CMD) is defined by diminished flow reserve. Functional and structural CMD endotypes have recently been described, with normal and elevated minimal microvascular resistance, respectively. OBJECTIVES This study determined the mechanism of altered resting and maximal flow in CMD endotypes. METHODS A total of 86 patients with angina but no obstructive coronary disease underwent coronary pressure and flow measurement during rest, exercise, and adenosine-mediated hyperemia and were classified as the reference group or as patients with CMD by a coronary flow reserve threshold of 2.5; functional or structural endotypes were distinguished by a hyperemic microvascular resistance threshold of 2.5 mm Hg/cm/s. Endothelial function was assessed by forearm blood flow (FBF) response to acetylcholine, and nitric oxide synthase (NOS) activity was defined as the inverse of FBF reserve to NG-monomethyl-L-arginine. RESULTS Of the 86 patients, 46 had CMD (28 functional, 18 structural), and 40 patients formed the reference group. Resting coronary blood flow (CBF) (24.6 ± 2.0 cm/s vs. 16.6 ± 3.9 cm/s vs. 15.1 ± 4.7 cm/s; p < 0.001) and NOS activity (2.27 ± 0.96 vs. 1.77 ± 0.59 vs. 1.30 ± 0.16; p < 0.001) were higher in the functional group compared with the structural CMD and reference groups, respectively. The structural group had lower acetylcholine FBF augmentation than the functional or reference group (2.1 ± 1.8 vs. 4.1 ± 1.7 vs. 4.5 ± 2.0; p < 0.001). On exercise, oxygen demand was highest (rate-pressure product: 22,157 ± 5,497 beats/min/mm Hg vs. 19,519 ± 4,653 beats/min/mm Hg vs. 17,530 ± 4,678 beats/min/mm Hg; p = 0.004), but peak CBF was lowest in patients with structural CMD compared with the functional and reference groups. CONCLUSIONS Functional CMD is characterized by elevated resting flow that is linked to enhanced NOS activity. Patients with structural CMD have endothelial dysfunction, which leads to diminished peak CBF augmentation and increased demand during exercise. The value of pathophysiologically stratified therapy warrants investigation.
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Affiliation(s)
- Haseeb Rahman
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, Kings College London, London, United Kingdom
| | - Ozan M Demir
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, Kings College London, London, United Kingdom
| | - Faisal Khan
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, Kings College London, London, United Kingdom
| | - Matthew Ryan
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, Kings College London, London, United Kingdom
| | - Howard Ellis
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, Kings College London, London, United Kingdom
| | - Mark T Mills
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, Kings College London, London, United Kingdom
| | - Amedeo Chiribiri
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Andrew Webb
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, Kings College London, London, United Kingdom
| | - Divaka Perera
- British Heart Foundation Centre of Excellence and National Institute for Health Research Biomedical Research Centre at the School of Cardiovascular Medicine and Sciences, Kings College London, London, United Kingdom.
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Affiliation(s)
- Thomas Joseph Ford
- BHF Cardiovascular Research Centre, University of Glasgow College of Medical Veterinary and Life Sciences, Glasgow, UK
- Department of Cardiology, Gosford Hospital, Gosford, New South Wales, Australia
- Faculty of Health and Medicine, The University of Newcastle, Newcastle, NSW, Australia
| | - Colin Berry
- BHF Cardiovascular Research Centre, University of Glasgow College of Medical Veterinary and Life Sciences, Glasgow, UK
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Tona F, Boscaro M, Barbot M, Maritan L, Famoso G, Dal Lin C, Montisci R, Fallo F, Iliceto S, Scaroni C. New insights to the potential mechanisms driving coronary flow reserve impairment in Cushing's syndrome: A pilot noninvasive study by transthoracic Doppler echocardiography. Microvasc Res 2020; 128:103940. [DOI: 10.1016/j.mvr.2019.103940] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/30/2019] [Accepted: 10/30/2019] [Indexed: 01/06/2023]
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Rahman H, Ryan M, Lumley M, Modi B, McConkey H, Ellis H, Scannell C, Clapp B, Marber M, Webb A, Chiribiri A, Perera D. Coronary Microvascular Dysfunction Is Associated With Myocardial Ischemia and Abnormal Coronary Perfusion During Exercise. Circulation 2019; 140:1805-1816. [PMID: 31707835 PMCID: PMC6882540 DOI: 10.1161/circulationaha.119.041595] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 10/15/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Coronary microvascular dysfunction (MVD) is defined by impaired flow augmentation in response to a pharmacological vasodilator in the presence of nonobstructive coronary artery disease. It is unknown whether diminished coronary vasodilator response correlates with abnormal exercise physiology or inducible myocardial ischemia. METHODS Patients with angina and nonobstructive coronary artery disease had simultaneous coronary pressure and flow velocity measured using a dual sensor-tipped guidewire during rest, supine bicycle exercise, and adenosine-mediated hyperemia. Microvascular resistance (MR) was calculated as coronary pressure divided by flow velocity. Wave intensity analysis quantified the proportion of accelerating wave energy (perfusion efficiency). Global myocardial blood flow and subendocardial:subepicardial perfusion ratio were quantified using 3-Tesla cardiac magnetic resonance imaging during hyperemia and rest; inducible ischemia was defined as hyperemic subendocardial:subepicardial perfusion ratio <1.0. Patients were classified as having MVD if coronary flow reserve <2.5 and controls if coronary flow reserve ≥2.5, with researchers blinded to the classification. RESULTS Eighty-five patients were enrolled (78% female, 57±10 years), 45 (53%) were classified as having MVD. Of the MVD group, 82% had inducible ischemia compared with 22% of controls (P<0.001); global myocardial perfusion reserve was 2.01±0.41 and 2.68±0.49 (P<0.001). In controls, coronary perfusion efficiency improved from rest to exercise and was unchanged during hyperemia (59±11% vs 65±14% vs 57±18%; P=0.02 and P=0.14). In contrast, perfusion efficiency decreased during both forms of stress in MVD (61±12 vs 44±10 vs 42±11%; both P<0.001). Among patients with a coronary flow reserve <2.5, 62% had functional MVD, with normal minimal MR (hyperemic MR<2.5 mmHg/cm/s), and 38% had structural MVD with elevated hyperemic MR. Resting MR was lower in those with functional MVD (4.2±1.0 mmHg/cm/s) than in those with structural MVD (6.9±1.7 mmHg/cm/s) or controls (7.3±2.2 mmHg/cm/s; both P<0.001). During exercise, the structural group had a higher systolic blood pressure (188±25 mmHg) than did those with functional MVD (161±27 mmHg; P=0.004) and controls (156±30 mmHg; P<0.001). Functional and structural MVD had similar stress myocardial perfusion and exercise perfusion efficiency values. CONCLUSION In patients with angina and nonobstructive coronary artery disease, diminished coronary flow reserve characterizes a cohort with inducible ischemia and a maladaptive physiological response to exercise. We have identified 2 endotypes of MVD with distinctive systemic vascular responses to exercise; whether endotypes have a different prognosis or require different treatments merits further investigation.
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Affiliation(s)
- Haseeb Rahman
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
| | - Matthew Ryan
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
| | - Matthew Lumley
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
| | - Bhavik Modi
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
| | - Hannah McConkey
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
| | - Howard Ellis
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
| | - Cian Scannell
- Biomedical Engineering & Imaging Sciences (A.C., C.S.), King’s College London, United Kingdom
| | - Brian Clapp
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
| | - Michael Marber
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
| | - Andrew Webb
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
| | - Amedeo Chiribiri
- Biomedical Engineering & Imaging Sciences (A.C., C.S.), King’s College London, United Kingdom
| | - Divaka Perera
- From The British Heart Foundation Centre of Research Excellence, Schools of Cardiovascular Medicine & Sciences (H.R., M.R., M.L., B.M., H.M., H.E., B.C., M.M., A.W., D.P.), King’s College London, United Kingdom
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Montisci R, Ruscazio M, Tona F, Corbetti F, Sarais C, Marchetti MF, Cacciavillani L, Iliceto S, Perazzolo Marra M, Meloni L. Coronary flow reserve is related to the extension and transmurality of myocardial necrosis and predicts functional recovery after acute myocardial infarction. Echocardiography 2019; 36:844-853. [PMID: 31002185 DOI: 10.1111/echo.14337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/06/2019] [Accepted: 03/21/2019] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Few studies have examined the effect of transmurality of myocardial necrosis on coronary microcirculation. The aim of this study was to examine the influence of cardiac magnetic resonance-derived (GE-MRI) structural determinants of coronary flow reserve (CFR) after anterior myocardial infarction (STEMI), and their predictive value on regional functional recovery. METHODS Noninvasive CFR and GE-MRI were studied in 37 anterior STEMI patients after primary coronary angioplasty. The wall motion score index in the left descending anterior coronary artery territory (A-WMSI) was calculated at admission and follow-up (FU). Recovery of regional left ventricular (LV) function was defined as the difference in A-WMSI at admission and FU. The necrosis score index (NSI) and transmurality score index (TSI) by GE-MRI were calculated in the risk area. Baseline (BMR) and hyperemic (HMR) microvascular resistance, arteriolar resistance index (ARI), and coronary resistance reserve (CRR) were calculated at the Doppler echocardiography. RESULTS Bivariate analysis indicated that the CPK and troponin I peak, heart rate, NSI, TSI, BMR, the ARI, and CRR were related to CFR. Multivariable analysis revealed that TSI was the only independent determinant of CFR. The CFR value of >2.27, identified as optimal by ROC analysis, was 77% specific and 73% sensitive with accuracy of 76% in identifying patients with functional recovery. CONCLUSIONS Preservation of microvascular function after AMI is related to the extent of transmurality of myocardial necrosis, is an important factor influencing regional LV recovery, and can be monitored by noninvasive CFR.
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Affiliation(s)
- Roberta Montisci
- Clinical Cardiology, Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Massimo Ruscazio
- Clinical Cardiology, Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Francesco Tona
- Clinical Cardiology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | | | - Cristiano Sarais
- Clinical Cardiology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Maria Francesca Marchetti
- Clinical Cardiology, Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - Luisa Cacciavillani
- Clinical Cardiology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Sabino Iliceto
- Clinical Cardiology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Martina Perazzolo Marra
- Clinical Cardiology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Luigi Meloni
- Clinical Cardiology, Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
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Cazzagon N, Dal Lin C, Famoso G, Montisci R, Franceschet I, Floreani A, Tona F. Coronary flow reserve in patients with primary biliary cholangitis. Dig Liver Dis 2019; 51:542-548. [PMID: 30448459 DOI: 10.1016/j.dld.2018.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 10/16/2018] [Accepted: 10/19/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND It is still not clear whether primary biliary cholangitis (PBC) is associated with abnormalities of the cardiovascular system. We aimed to assess the relationship between PBC and coronary flow reserve (CFR). METHODS Our inclusion criterion was a diagnosis of PBC with no clinical evidence of heart disease or metabolic syndrome. Coronary flow velocity in the left anterior descending coronary artery was measured using transthoracic Doppler echocardiography at rest (DFVr), and during adenosine infusion (DFVh). The corrected CFR (cCFR) was defined as the ratio of DFVh to DFVr corrected for cardiac workload (cDFVr). Microvascular resistance was also assessed in baseline (BMR) and hyperemic conditions (HMR). RESULTS 37 PBC patients and 37 sex- and age-matched controls were considered. The cCFR was significantly lower in PBC patients (2.8 ± 0.7 vs. 3.7 ± 0.7, p < 0.0001), and abnormal (≤2.5) in 13 (35%) of them, but in none of the controls (p < 0.0001). The cDFVr was higher in patients with abnormal cCFR (29.0 ± 6.0 vs. 20.4 ± 4.5 cm/sec, p < 0.0001). The CFR and cCFR did not correlate with any characteristics of PBC, comorbidities or Framingham risk scores. The BMR and HMR correlated with time since PBC diagnosis and duration of symptoms. CONCLUSION The CFR is reduced in PBC, apparently due to mechanisms correlating with the time since diagnosis. In particular, the higher cDFVr with a lower basal resistance in patients with cCFR ≤ 2.5 suggests a compensatory mechanism against any cardiomyocyte bioenergetics impairment.
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Affiliation(s)
- Nora Cazzagon
- Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy.
| | - Carlo Dal Lin
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Giulia Famoso
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Roberta Montisci
- Cardiology Unit, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Irene Franceschet
- Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Annarosa Floreani
- Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Francesco Tona
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
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Robinson AA, Bourque JM. Emerging Techniques for Cardiovascular PET. CARDIOVASCULAR INNOVATIONS AND APPLICATIONS 2019; 4:13-24. [PMID: 34552704 PMCID: PMC8455121 DOI: 10.15212/cvia.2019.0004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The application of positron emission tomography (PET) to cardiac disease has yielded tremendous developments in the evaluation of coronary artery, myocardial, and valvular heart disease over the past several decades. These advances have included development of new radiotracers, incremental technological improvements, and coupling of PET with other non-invasive cardiac imaging modalities. The current era has seen rapid, successive and wide-ranging advances in PET myocardial perfusion and metabolic imaging. This review will address emerging techniques in cardiovascular PET imaging, including the measurement of absolute myocardial blood flow (MBF), use of novel tracers, and other advances in heart failure, infection imaging, and valvular disease.
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Affiliation(s)
- Austin A. Robinson
- Cardiovascular Division and the Cardiovascular Imaging Center, Department of Medicine, University of Virginia Health System, Charlottesville, VA
| | - Jamieson M. Bourque
- Cardiovascular Division and the Cardiovascular Imaging Center, Department of Medicine, University of Virginia Health System, Charlottesville, VA
- Department of Radiology, University of Virginia Health System, Charlottesville, VA
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Sunyecz IL, McCallinhart PE, Patel KU, McDermott MR, Trask AJ. Defining Coronary Flow Patterns: Comprehensive Automation of Transthoracic Doppler Coronary Blood Flow. Sci Rep 2018; 8:17268. [PMID: 30467422 PMCID: PMC6250694 DOI: 10.1038/s41598-018-35572-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 11/05/2018] [Indexed: 11/09/2022] Open
Abstract
The coronary microcirculation (CM) plays a critical role in the regulation of blood flow and nutrient exchange to support the viability of the heart. In many disease states, the CM becomes structurally and functionally impaired, and transthoracic Doppler echocardiography can be used as a non-invasive surrogate to assess CM disease. Analysis of Doppler echocardiography is prone to user bias and can be laborious, especially if additional parameters are collected. We hypothesized that we could develop a MATLAB algorithm to automatically analyze clinically-relevant and non-traditional parameters from murine PW Doppler coronary flow patterns that would reduce intra- and inter-operator bias, and analysis time. Our results show a significant reduction in intra- and inter-observer variability as well as a 30 fold decrease in analysis time with the automated program vs. manual analysis. Finally, we demonstrated good agreement between automated and manual analysis for clinically-relevant parameters under baseline and hyperemic conditions. Resulting coronary flow velocity reserve calculations were also found to be in good agreement. We present a MATLAB algorithm that is user friendly and robust in defining and measuring Doppler coronary flow pattern parameters for more efficient and potentially more insightful analysis assessed via Doppler echocardiography.
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Affiliation(s)
- Ian L Sunyecz
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Patricia E McCallinhart
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Kishan U Patel
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Michael R McDermott
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Aaron J Trask
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA.
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA.
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Abstract
Cardiovascular disease (CVD) is the leading cause of mortality in people with type 2 diabetes mellitus (T2DM), yet a significant proportion of the disease burden cannot be accounted for by conventional cardiovascular risk factors. Hypertension occurs in majority of people with T2DM, which is substantially more frequent than would be anticipated based on general population samples. The impact of hypertension is considerably higher in people with diabetes than it is in the general population, suggesting either an increased sensitivity to its effect or a confounding underlying aetiopathogenic mechanism of hypertension associated with CVD within diabetes. In this contribution, we aim to review the changes observed in the vascular tree in people with T2DM compared to the general population, the effects of established anti-diabetes drugs on microvascular outcomes, and explore the hypotheses to account for common causalities of the increased prevalence of CVD and hypertension in people with T2DM.
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Affiliation(s)
- W David Strain
- Diabetes and Vascular Medicine Research Centre, NIHR Exeter Clinical Research Facility and Institute of Biomedical and Clinical Science, University of Exeter Medical School, Royal Devon & Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5AX, UK.
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Ford TJ, Corcoran D, Berry C. Stable coronary syndromes: pathophysiology, diagnostic advances and therapeutic need. HEART (BRITISH CARDIAC SOCIETY) 2017; 104:284-292. [PMID: 29030424 PMCID: PMC5861393 DOI: 10.1136/heartjnl-2017-311446] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 08/14/2017] [Accepted: 08/16/2017] [Indexed: 12/13/2022]
Abstract
The diagnostic management of patients with angina pectoris typically centres on the detection of obstructive epicardial CAD, which aligns with evidence-based treatment options that include medical therapy and myocardial revascularisation. This clinical paradigm fails to account for the considerable proportion (approximately one-third) of patients with angina in whom obstructive CAD is excluded. This common scenario presents a diagnostic conundrum whereby angina occurs but there is no obstructive CAD (ischaemia and no obstructive coronary artery disease—INOCA). We review new insights into the pathophysiology of angina whereby myocardial ischaemia results from a deficient supply of oxygenated blood to the myocardium, due to various combinations of focal or diffuse epicardial disease (macrovascular), microvascular dysfunction or both. Macrovascular disease may be due to the presence of obstructive CAD secondary to atherosclerosis, or may be dynamic due to a functional disorder (eg, coronary artery spasm, myocardial bridging). Pathophysiology of coronary microvascular disease may involve anatomical abnormalities resulting in increased coronary resistance, or functional abnormalities resulting in abnormal vasomotor tone. We consider novel clinical diagnostic techniques enabling new insights into the causes of angina and appraise the need for improved therapeutic options for patients with INOCA. We conclude that the taxonomy of stable CAD could improve to better reflect the heterogeneous pathophysiology of the coronary circulation. We propose the term ‘stable coronary syndromes’ (SCS), which aligns with the well-established terminology for ‘acute coronary syndromes’. SCS subtends a clinically relevant classification that more fully encompasses the different diseases of the epicardial and microvascular coronary circulation.
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Affiliation(s)
- Thomas J Ford
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.,West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, Clydebank, UK.,University of New South Wales, Sydney, NSW, Australia
| | - David Corcoran
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.,West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, Clydebank, UK.,British Society of Cardiovascular Research, Glasgow, UK
| | - Colin Berry
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.,West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, Clydebank, UK.,British Society of Cardiovascular Research, Glasgow, UK
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