1
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Sun Y, Shang Q. Research hotspots and trends regarding microRNAs in hypertension: a bibliometric analysis. Clin Exp Hypertens 2024; 46:2304017. [PMID: 38230680 DOI: 10.1080/10641963.2024.2304017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 01/03/2024] [Indexed: 01/18/2024]
Abstract
To investigate the research levels, hotspots, and development trends regarding microRNAs in hypertension, this study conducted a visual analysis of studies on miRNA in hypertension based on the Web of Science core collection database using CiteSpace and VOSviewer analysis software along with literature from 2005-2023 as information data. Using citation frequency, centrality, and starting year as metrics, this study analyzed the research objects. It revealed the main research bodies and hotspots and evaluated the sources of literature and the distribution of knowledge from journals and authors. Finally, the potential research directions for miRNAs in hypertension are discussed. The results showed that the research field is in a period of vigorous development, and scholars worldwide have shown strong interest in this research field. A comprehensive summary and analysis of the current research status and application trends will prove beneficial for the advancement of this field.
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Affiliation(s)
- Yu Sun
- College of traditional Chinese medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Qingxin Shang
- College of traditional Chinese medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
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2
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Power A, Parekh A, Landau J, Rezende-Neto J. Feasibility of a 4 French resuscitative endovascular balloon occlusion of the aorta (REBOA) device for nontraumatic cardiac arrest in a randomized controlled study using a large porcine model. Resusc Plus 2024; 19:100710. [PMID: 39104445 PMCID: PMC11298629 DOI: 10.1016/j.resplu.2024.100710] [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: 04/16/2024] [Revised: 06/19/2024] [Accepted: 06/26/2024] [Indexed: 08/07/2024] Open
Abstract
Aim The objectives of this study were to assess the return of spontaneous circulation rates and hemodynamic response of large swine (>65Kg) during cardiopulmonary resuscitation after nontraumatic cardiac arrest using the COBRA-OS® aortic occlusion balloon and to address limitations of large swine closed-chest cardiopulmonary resuscitation by comparing closed-chest vs. open-chest cardiopulmonary resuscitation. Methods Yorkshire pigs (n = 10) weighing >65 kg were anesthetized and ventilated. After 7 min of untreated ventricular fibrillation (VF), animals were randomized to receive mechanical closed-chest cardiopulmonary resuscitation or open-chest cardiac massage. Following a 5-minute low-flow state, advanced cardiac life support algorithms were started and the COBRA-OS® was inflated in the thoracic aorta. Animals that achieved return of spontaneous circulation were re-started on mechanical ventilation and medications, CPR, defibrillation, and aortic occlusion were discontinued. The primary outcome was return of spontaneous circulation and secondary outcomes were mean arterial pressures generated in the low flow and aortic occlusion states before return of spontaneous circulation. Groups were compared with a t-test or Mann-Whitney U test for normal and non-parametric data, respectively, while categorical data was compared with the chi square test. Results Return of spontaneous circulation was obtained in 4 animals (80%) in the open cardiac massage group and none in the mechanical closed-chest CPR group (p < 0.05). The COBRA-OS® successfully occluded all aortas and animals experienced higher mean arterial pressures in both groups with aortic occlusion (median 15 mm Hg, IQR 13-23 mm Hg), but with a higher MAP difference in the open cardiac massage group (-12.2 mm Hg, [-2.581, -21.819]). Conclusions Consideration should be given to intra-thoracic cardiac massage to increase cardiopulmonary resuscitation effectiveness and therefore return of spontaneous circulation rates in large (>65 kg) swine models of nontraumatic cardiac arrest. The COBRA-OS® demonstrated feasibility for use in this model.The Keenan Research Center, Li Ka Shing Knowledge Institute of St. Michael's Hospital Animal Care Committee: ACC Protocol #726.
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Affiliation(s)
- Adam Power
- Department of Surgery, Western University, London, Ontario, Canada
| | - Asha Parekh
- School of Biomedical Engineering, Western University, London, Ontario, Canada
| | - John Landau
- Department of Surgery, Western University, London, Ontario, Canada
| | - Joao Rezende-Neto
- Trauma and Acute Care General Surgery, Department of Surgery, St. Michael’s Hospital, Toronto, Ontario, Canada
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3
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Vink CEM, de Jong EAM, Woudstra J, Molenaar M, Kamp O, Götte MJW, van Raalte DH, Serné E, van de Hoef TP, Chamuleau SAJ, Eringa EC, Appelman Y. The role of myocardial blood volume in the pathophysiology of angina with non-obstructed coronary arteries: The MICORDIS study. Int J Cardiol 2024; 415:132479. [PMID: 39181410 DOI: 10.1016/j.ijcard.2024.132479] [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: 05/24/2024] [Revised: 08/14/2024] [Accepted: 08/20/2024] [Indexed: 08/27/2024]
Abstract
BACKGROUND Angina with Non-Obstructed Coronary Arteries (ANOCA) involves abnormal vasomotor responses. While reduced coronary flow is an established contributor to myocardial hypoxia, myocardial blood volume (MBV) independently regulates myocardial oxygen uptake but its role in ANOCA remains unclear. OBJECTIVES We hypothesized that reduced MBV contributes to ANOCA, and associates with insulin resistance in ANOCA. METHODS MBV in ANOCA patients was compared to age- and sex-matched healthy controls. ANOCA patients underwent coronary angiography with invasive coronary function testing (CFT) to identify vasospasm and coronary microvascular dysfunction. In all subjects MBV was quantified at baseline, during hyperinsulinemia and during dobutamine-induced stress using myocardial contrast echocardiography (MCE). The hyperinsulinemic-euglycemic clamp was used to assess insulin resistance. RESULTS Twenty-eight ANOCA patients (21% men, 56.8 ± 8.6 years) and 28 healthy controls (21% men, 56.5 ± 7.0 years) were included. During CFT 11% of patients showed epicardial vasospasm, 39% microvascular vasospasm, 25% coronary microvascular dysfunction, and 11% of patients had a negative CFT. ANOCA patients had significant lower insulin-sensitivity (p < 0.01). During MCE, ANOCA patients showed a significantly lower MBV at baseline (0.388 vs 0.438 mL/mL, p = 0.04), during hyperinsulinemia (0.395 vs 0.447 mL/mL, p = 0.02), and during dobutamine-induced stress (0.401 vs 0.476 mL/mL, p = 0.030). CONCLUSIONS In ANOCA patients MBV is diminished at baseline, during hyperinsulinemia and dobutamine-induced stress in the absence of differences in microvascular recruitment. These findings support the presence of capillary rarefaction in ANOCA patients. ANOCA patients showed metabolic insulin resistance, but insulin did not acutely alter myocardial perfusion.
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Affiliation(s)
- Caitlin E M Vink
- Amsterdam UMC Heart Centre, Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Elize A M de Jong
- Amsterdam UMC Heart Centre, Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands; Department of Cardiology, University Medical Center Utrecht, the Netherlands
| | - Janneke Woudstra
- Amsterdam UMC Heart Centre, Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Mitchel Molenaar
- Amsterdam UMC Heart Centre, Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Otto Kamp
- Amsterdam UMC Heart Centre, Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Marco J W Götte
- Amsterdam UMC Heart Centre, Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Daniel H van Raalte
- Diabetes Center, Department of Internal Medicine, Amsterdam UMC, the Netherlands
| | - Erik Serné
- Diabetes Center, Department of Internal Medicine, Amsterdam UMC, the Netherlands
| | - Tim P van de Hoef
- Department of Cardiology, University Medical Center Utrecht, the Netherlands
| | - Steven A J Chamuleau
- Amsterdam UMC Heart Centre, Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands
| | - Etto C Eringa
- Amsterdam Cardiovascular Sciences, Department of Physiology, Amsterdam UMC, Amsterdam, the Netherlands; Maastricht University, Cardiovascular Research Institute Maastricht, Department of Physiology, Maastricht, the Netherlands
| | - Yolande Appelman
- Amsterdam UMC Heart Centre, Department of Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands.
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4
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Zeitouni M, Rahoual G, Procopi N, Beaupré F, Michon M, Martinez C, Sulman D, Guedeney P, Hammoudi N, Vicaut E, Hatem S, Kerneis M, Silvain J, Montalescot G, Action Group FT. Changes in absolute coronary flow and microvascular resistance during exercise in patients with ANOCA. EUROINTERVENTION 2024; 20:1008-1017. [PMID: 39155757 PMCID: PMC11317832 DOI: 10.4244/eij-d-24-00247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/31/2024] [Indexed: 08/20/2024]
Abstract
BACKGROUND Whether saline-induced hyperaemia captures exercise-induced coronary flow regulation remains unknown. AIMS Through this study, we aimed to describe absolute coronary flow (Q) and microvascular resistance (Rμ) adaptation during exercise in participants with angina with non-obstructive coronary artery disease (ANOCA) and to explore the correlations between saline- and exercise-derived coronary flow reserve (CFR) and microvascular resistance reserve (MRR). METHODS Rμ, Q, CFR and MRR were assessed in the left anterior descending artery using continuous thermodilution with saline infusion at 10 mL/min (rest), 20 mL/min (hyperaemia) and finally at a 10 mL/min infusion rate during stress testing with a dedicated supine cycling ergometer. An incremental workload of 30 watts every two minutes was applied. A saline-derived CFR (CFRsaline) cutoff <2.5 was used to identify coronary microvascular dysfunction (CMD). RESULTS CFRsaline-defined CMD was observed in 53.3% of the participants (16/30). While cycling, these patients less of an ability to increase Q (7 [interquartile range [IQR] 30.5-103.0] vs 21 [IQR 5.8-45.0] mL/min/30 watts; p=0.01) due to a smaller decrease of Rμ (109 {IQR 32-286} vs 202 [IQR 102-379] Wood units [WU]/30 watts; p<0.01) as compared with the group with normal CFRsaline. In the overall population, CFRsaline and exercise-derived CFR (CFRexercise) were 2.70±0.90 and 2.85±1.54, respectively, with an agreement classification of 83.3%. A good correlation between saline and exercise techniques for both CFR (r=0.73; p<0.0001) and MRR (r=0.76; p<0.0001) was observed. Among participants with normal CFRsaline, 28.7% (4/14) had an impaired CFRexercise <2.5 at the peak of exercise due to a moderate and late decrease of Rμ. CONCLUSIONS Saline-induced hyperaemia provided a valid surrogate for exercise physiology independently of the absolute level of CFR and MRR, although exercise provided more granularity to evaluate adaptation among participants with exercise-related CMD.
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Affiliation(s)
- Michel Zeitouni
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Ghilas Rahoual
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Niki Procopi
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Frederic Beaupré
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Maxime Michon
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Clélia Martinez
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - David Sulman
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Paul Guedeney
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Nadjib Hammoudi
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Eric Vicaut
- Unité de Recherche Clinique, CHU Lariboisière, Paris, France
| | - Stéphane Hatem
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Mathieu Kerneis
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Johanne Silvain
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
| | - Gilles Montalescot
- Sorbonne Université, ACTION Study Group, INSERM UMRS 1166, ICAN, Institut de Cardiologie, Hôpital Pitié-Salpêtrière (AP-HP), Paris, France
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Pruthi S, Siddiqui E, Smilowitz NR. Beyond Coronary Artery Disease: Assessing the Microcirculation. Rheum Dis Clin North Am 2024; 50:519-533. [PMID: 38942582 DOI: 10.1016/j.rdc.2024.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2024]
Abstract
Ischemic heart disease (IHD) affects more than 20 million adults in the United States. Although classically attributed to atherosclerosis of the epicardial coronary arteries, nearly half of patients with stable angina and IHD who undergo invasive coronary angiography do not have obstructive epicardial coronary artery disease. Ischemia with nonobstructive coronary arteries is frequently caused by microvascular angina with underlying coronary microvascular dysfunction (CMD). Greater understanding the pathophysiology, diagnosis, and treatment of CMD holds promise to improve clinical outcomes of patients with ischemic heart disease.
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Affiliation(s)
- Sonal Pruthi
- Division of Cardiology, Department of Medicine, NYU Langone Health, 550 First Avenue, New York, NY 10016, USA
| | - Emaad Siddiqui
- Division of Cardiology, Department of Medicine, NYU Langone Health, 550 First Avenue, New York, NY 10016, USA
| | - Nathaniel R Smilowitz
- Division of Cardiology, Department of Medicine, NYU Langone Health, 550 First Avenue, New York, NY 10016, USA; Cardiology Section, Department of Medicine, VA New York Harbor Healthcare System, 423 East 23rd Street, New York, NY 10010, USA; The Leon H. Charney Division of Cardiology, NYU Langone Health, NYU School of Medicine, 423 East 23rd Street, 12-West, New York, NY 10010, USA.
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Meneses-Valdés R, Gallero S, Henríquez-Olguín C, Jensen TE. Exploring NADPH oxidases 2 and 4 in cardiac and skeletal muscle adaptations - A cross-tissue comparison. Free Radic Biol Med 2024; 223:296-305. [PMID: 39069268 DOI: 10.1016/j.freeradbiomed.2024.07.035] [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: 05/17/2024] [Revised: 07/23/2024] [Accepted: 07/24/2024] [Indexed: 07/30/2024]
Abstract
Striated muscle cells, encompassing cardiac myocytes and skeletal muscle fibers, are fundamental to athletic performance, facilitating blood circulation and coordinated movement through contraction. Despite their distinct functional roles, these muscle types exhibit similarities in cytoarchitecture, protein expression, and excitation-contraction coupling. Both muscle types also undergo molecular remodeling in energy metabolism and cell size in response to acute and repeated exercise stimuli to enhance exercise performance. Reactive oxygen species (ROS) produced by NADPH oxidase (NOX) isoforms 2 and 4 have emerged as signaling molecules that regulate exercise adaptations. This review systematically compares NOX2 and NOX4 expression, regulation, and roles in cardiac and skeletal muscle responses across exercise modalities. We highlight the many gaps in our knowledge and opportunities to let future skeletal muscle research into NOX-dependent mechanisms be inspired by cardiac muscle studies and vice versa. Understanding these processes could enhance the development of exercise routines to optimize human performance and health strategies that capitalize on the advantages of physical activity.
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Affiliation(s)
- Roberto Meneses-Valdés
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Universitetsparken 13, Copenhagen, 2100, Denmark
| | - Samantha Gallero
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Universitetsparken 13, Copenhagen, 2100, Denmark; Advanced Center for Chronic Diseases (ACCDiS) and Department of Biochemistry and Molecular Biology, Faculty of Chemical and Pharmaceutical Sciences, Universidad de Chile, Santiago, Chile
| | - Carlos Henríquez-Olguín
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Universitetsparken 13, Copenhagen, 2100, Denmark; Center of Exercise Physiology and Metabolism, Department of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile.
| | - Thomas E Jensen
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Universitetsparken 13, Copenhagen, 2100, Denmark.
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7
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Cheng T, Yu D, Tan J, Liao S, Zhou L, OuYang W, Wen Z. Development a nomogram prognostic model for survival in heart failure patients based on the HF-ACTION data. BMC Med Inform Decis Mak 2024; 24:197. [PMID: 39030567 PMCID: PMC11264587 DOI: 10.1186/s12911-024-02593-1] [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: 04/02/2023] [Accepted: 06/27/2024] [Indexed: 07/21/2024] Open
Abstract
BACKGROUND The risk assessment for survival in heart failure (HF) remains one of the key focuses of research. This study aims to develop a simple and feasible nomogram model for survival in HF based on the Heart Failure-A Controlled Trial Investigating Outcomes of Exercise TraiNing (HF-ACTION) to support clinical decision-making. METHODS The HF patients were extracted from the HF-ACTION database and randomly divided into a training cohort and a validation cohort at a ratio of 7:3. Multivariate Cox regression was used to identify and integrate significant prognostic factors to form a nomogram, which was displayed in the form of a static nomogram. Bootstrap resampling (resampling = 1000) and cross-validation was used to internally validate the model. The prognostic performance of the model was measured by the concordance index (C-index), calibration curve, and the decision curve analysis. RESULTS There were 1394 patients with HF in the overall analysis. Seven prognostic factors, which included age, body mass index (BMI), sex, diastolic blood pressure (DBP), exercise duration, peak exercise oxygen consumption (peak VO2), and loop diuretic, were identified and applied to the nomogram construction based on the training cohort. The C-index of this model in the training cohort was 0.715 (95% confidence interval (CI): 0.700, 0.766) and 0.662 (95% CI: 0.646, 0.752) in the validation cohort. The area under the ROC curve (AUC) value of 365- and 730-day survival is (0.731, 0.734) and (0.640, 0.693) respectively in the training cohort and validation cohort. The calibration curve showed good consistency between nomogram-predicted survival and actual observed survival. The decision curve analysis (DCA) revealed net benefit is higher than the reference line in a narrow range of cutoff probabilities and the result of cross-validation indicates that the model performance is relatively robust. CONCLUSIONS This study created a nomogram prognostic model for survival in HF based on a large American population, which can provide additional decision information for the risk prediction of HF.
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Affiliation(s)
- Ting Cheng
- Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Dongdong Yu
- First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Jun Tan
- Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shaojun Liao
- Guangdong Provincial Hospital of Chinese Medicine (Second Affiliated Hospital of Guangzhou University of Chinese Medicine), Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, China
| | - Li Zhou
- Guangdong Provincial Hospital of Chinese Medicine (Second Affiliated Hospital of Guangzhou University of Chinese Medicine), Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, China
| | - Wenwei OuYang
- Guangdong Provincial Hospital of Chinese Medicine (Second Affiliated Hospital of Guangzhou University of Chinese Medicine), Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, China
| | - Zehuai Wen
- Guangdong Provincial Hospital of Chinese Medicine (Second Affiliated Hospital of Guangzhou University of Chinese Medicine), Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, China.
- Science and Technology Innovation Center of Guangzhou University of Chinese Medicine, Guangzhou, China.
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8
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Montino Pelagi G, Regazzoni F, Huyghe JM, Baggiano A, Alì M, Bertoluzza S, Valbusa G, Pontone G, Vergara C. Modeling cardiac microcirculation for the simulation of coronary flow and 3D myocardial perfusion. Biomech Model Mechanobiol 2024:10.1007/s10237-024-01873-z. [PMID: 38995488 DOI: 10.1007/s10237-024-01873-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 07/01/2024] [Indexed: 07/13/2024]
Abstract
Accurate modeling of blood dynamics in the coronary microcirculation is a crucial step toward the clinical application of in silico methods for the diagnosis of coronary artery disease. In this work, we present a new mathematical model of microcirculatory hemodynamics accounting for microvasculature compliance and cardiac contraction; we also present its application to a full simulation of hyperemic coronary blood flow and 3D myocardial perfusion in real clinical cases. Microvasculature hemodynamics is modeled with a compliant multi-compartment Darcy formulation, with the new compliance terms depending on the local intramyocardial pressure generated by cardiac contraction. Nonlinear analytical relationships for vessels distensibility are included based on experimental data, and all the parameters of the model are reformulated based on histologically relevant quantities, allowing a deeper model personalization. Phasic flow patterns of high arterial inflow in diastole and venous outflow in systole are obtained, with flow waveforms morphology and pressure distribution along the microcirculation reproduced in accordance with experimental and in vivo measures. Phasic diameter change for arterioles and capillaries is also obtained with relevant differences depending on the depth location. Coronary blood dynamics exhibits a disturbed flow at the systolic onset, while the obtained 3D perfusion maps reproduce the systolic impediment effect and show relevant regional and transmural heterogeneities in myocardial blood flow (MBF). The proposed model successfully reproduces microvasculature hemodynamics over the whole heartbeat and along the entire intramural vessels. Quantification of phasic flow patterns, diameter changes, regional and transmural heterogeneities in MBF represent key steps ahead in the direction of the predictive simulation of cardiac perfusion.
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Affiliation(s)
- Giovanni Montino Pelagi
- LABS, Dipartimento di Chimica, Materiali e Ingegneria Chimica Giulio Natta, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan, 20133, Italy.
| | - Francesco Regazzoni
- MOX, Dipartimento di Matematica, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan, 20133, Italy
| | - Jacques M Huyghe
- School of Engineering, University of Limerick, Limerick, V94 T9PX, Ireland
- Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands
| | - Andrea Baggiano
- Perioperative Cardiology and Cardiovascular Imaging Department, Centro Cardiologico Monzino IRCCS, Via Carlo Parea 4, Milan, 20138, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Marco Alì
- Bracco Imaging S.p.A., Via Caduti di Marcinelle 13, Milan, 20134, Italy
- Department of Diagnostic Imaging and Stereotactic Radiosurgery, Centro Diagnostico Italiano S.p.A., Via Saint Bon 20, Milan, 20147, Italy
| | | | - Giovanni Valbusa
- Bracco Imaging S.p.A., Via Caduti di Marcinelle 13, Milan, 20134, Italy
| | - Gianluca Pontone
- Perioperative Cardiology and Cardiovascular Imaging Department, Centro Cardiologico Monzino IRCCS, Via Carlo Parea 4, Milan, 20138, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, 20134, Italy
| | - Christian Vergara
- LABS, Dipartimento di Chimica, Materiali e Ingegneria Chimica Giulio Natta, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan, 20133, Italy
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9
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Sato T, Hanna P, Mori S. Innervation of the coronary arteries and its role in controlling microvascular resistance. J Cardiol 2024; 84:1-13. [PMID: 38346669 DOI: 10.1016/j.jjcc.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 01/30/2024] [Indexed: 04/08/2024]
Abstract
The coronary circulation plays a crucial role in balancing myocardial perfusion and oxygen demand to prevent myocardial ischemia. Extravascular compressive forces, coronary perfusion pressure, and microvascular resistance are involved to regulate coronary blood flow throughout the cardiac cycle. Autoregulation of the coronary blood flow through dynamic adjustment of microvascular resistance is maintained by complex interactions among mechanical, endothelial, metabolic, neural, and hormonal mechanisms. This review focuses on the neural mechanism. Anatomy and physiology of the coronary arterial innervation have been extensively investigated using animal models. However, findings in the animal heart have limited applicability to the human heart as cardiac innervation is generally highly variable among species. So far, limited data are available on the human coronary artery innervation, rendering multiple questions unresolved. Recently, the clinical entity of ischemia with non-obstructive coronary arteries has been proposed, characterized by microvascular dysfunction involving abnormal vasoconstriction and impaired vasodilation. Thus, measurement of microvascular resistance has become a standard diagnostic for patients without significant stenosis in the epicardial coronary arteries. Neural mechanism is likely to play a pivotal role, supported by the efficacy of cardiac sympathetic denervation to control symptoms in patients with angina. Therefore, understanding the coronary artery innervation and control of microvascular resistance of the human heart is increasingly important for cardiologists for diagnosis and to select appropriate therapeutic options. Advancement in this field can lead to innovations in diagnostic and therapeutic approaches for coronary artery diseases.
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Affiliation(s)
- Takanori Sato
- University of California Los Angeles (UCLA) Cardiac Arrhythmia Center, UCLA Health System, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Peter Hanna
- University of California Los Angeles (UCLA) Cardiac Arrhythmia Center, UCLA Health System, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Shumpei Mori
- University of California Los Angeles (UCLA) Cardiac Arrhythmia Center, UCLA Health System, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
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10
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Sturgess VE, Tune JD, Figueroa CA, Carlson BE, Beard DA. Integrated modeling and simulation of recruitment of myocardial perfusion and oxygen delivery in exercise. J Mol Cell Cardiol 2024; 192:94-108. [PMID: 38754551 DOI: 10.1016/j.yjmcc.2024.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/30/2024] [Accepted: 05/12/2024] [Indexed: 05/18/2024]
Abstract
While exercise-mediated vasoregulation in the myocardium is understood to be governed by autonomic, myogenic, and metabolic-mediated mechanisms, we do not yet understand the spatial heterogeneity of vasodilation or its effects on microvascular flow patterns and oxygen delivery. This study uses a simulation and modeling approach to explore the mechanisms underlying the recruitment of myocardial perfusion and oxygen delivery in exercise. The simulation approach integrates model components representing: whole-body cardiovascular hemodynamics, cardiac mechanics and myocardial work; myocardial perfusion; and myocardial oxygen transport. Integrating these systems together, model simulations reveal: (1.) To match expected flow and transmural flow ratios at increasing levels of exercise, a greater degree of vasodilation must occur in the subendocardium compared to the subepicardium. (2.) Oxygen extraction and venous oxygenation are predicted to substantially decrease with increasing exercise level preferentially in the subendocardium, suggesting that an oxygen-dependent error signal driving metabolic mediated recruitment of flow would be operative only in the subendocardium. (3.) Under baseline physiological conditions approximately 4% of the oxygen delivered to the subendocardium may be supplied via retrograde flow from coronary veins.
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Affiliation(s)
- Victoria E Sturgess
- Department of Biomedical Engineering, University of Michigan, United States of America; Section of Vascular Surgery, Department of Surgery, University of Michigan, United States of America
| | - Johnathan D Tune
- Department of Physiology and Anatomy, University of North Texas Health Science Center, United States of America
| | - C Alberto Figueroa
- Department of Biomedical Engineering, University of Michigan, United States of America; Department of Molecular and Integrative Physiology, University of Michigan, United States of America
| | - Brian E Carlson
- Department of Molecular and Integrative Physiology, University of Michigan, United States of America
| | - Daniel A Beard
- Department of Molecular and Integrative Physiology, University of Michigan, United States of America.
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11
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Barry H, Iglesies-Grau J, Chaseling GK, Paul J, Gosselin C, D'Oliviera-Sousa C, Juneau M, Harel F, Kaiser D, Pelletier-Galarneau M, Gagnon D. The Effect of Heat Exposure on Myocardial Blood Flow and Cardiovascular Function. Ann Intern Med 2024; 177:901-910. [PMID: 38857500 DOI: 10.7326/m24-3504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND Heat extremes are associated with greater risk for cardiovascular death. The pathophysiologic mechanisms mediating this association are unknown. OBJECTIVE To quantify the myocardial blood flow (MBF) requirements of heat exposure. DESIGN Experimental study. (ClinicalTrials.gov: NCT04549974). SETTING Laboratory-based. PARTICIPANTS 61 participants, comprising 20 healthy young adults (mean age, 28 years), 21 healthy older adults (mean age, 67 years), and 20 older adults with coronary artery disease (CAD) (mean age, 70 years). INTERVENTION Participants were heated until their core temperature increased 1.5 °C; MBF was measured before heat exposure and at every increase of 0.5 °C in core temperature. MEASUREMENTS The primary outcome was MBF measured by positron emission tomography-computed tomography. Secondary outcomes included heart rate, blood pressure, and body weight change. RESULTS At a core temperature increase of 1.5 °C, MBF increased in healthy young adults (change, 0.8 mL/min/g [95% CI, 0.5 to 1.0 mL/min/g]), healthy older adults (change, 0.7 mL/min/g [CI, 0.5 to 0.9 mL/min/g]), and older adults with CAD (change, 0.6 mL/min/g [CI, 0.3 to 0.8 mL/min/g]). This represented a 2.08-fold (CI, 1.75- to 2.41-fold), 1.79-fold (CI, 1.59- to 1.98-fold), and 1.64-fold (CI, 1.41- to 1.87-fold) change, respectively, from preexposure values. Imaging evidence of asymptomatic heat-induced myocardial ischemia was seen in 7 adults with CAD (35%) in post hoc analyses. LIMITATIONS In this laboratory-based study, heating was limited to about 100 minutes and participants were restricted in movement and fluid intake. Participants refrained from strenuous exercise and smoking; stopped alcohol and caffeine intake; and withheld β-blockers, calcium-channel blockers, and nitroglycerin before heating. CONCLUSION Heat exposure that increases core temperature by 1.5 °C nearly doubles MBF. Changes in MBF did not differ by age or presence of CAD, but some older adults with CAD may experience asymptomatic myocardial ischemia. PRIMARY FUNDING SOURCE Canadian Institutes of Health Research.
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Affiliation(s)
- Hadiatou Barry
- Montreal Heart Institute and Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada (H.B.)
| | - Josep Iglesies-Grau
- Montreal Heart Institute and Department of Medicine, Université de Montréal, Montreal, Quebec, Canada (J.I.)
| | - Georgia K Chaseling
- Engagement and Co-Design Research Hub, School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia (G.K.C.)
| | - Jade Paul
- Montreal Heart Institute, Montreal, Quebec, Canada (J.P., C.G., M.J.)
| | - Camila Gosselin
- Montreal Heart Institute, Montreal, Quebec, Canada (J.P., C.G., M.J.)
| | - Caroline D'Oliviera-Sousa
- Department of Medical Imaging, Montreal Heart Institute, Montreal, Quebec, Canada (C.D., F.H., M.P.)
| | - Martin Juneau
- Montreal Heart Institute, Montreal, Quebec, Canada (J.P., C.G., M.J.)
| | - Francois Harel
- Department of Medical Imaging, Montreal Heart Institute, Montreal, Quebec, Canada (C.D., F.H., M.P.)
| | - David Kaiser
- Direction de Santé Publique du Centre Intégré Universitaire de Santé et de Services Sociaux du Centre-Sud-de-l'Île-de-Montréal, Montreal, Quebec, Canada (D.K.)
| | | | - Daniel Gagnon
- Montreal Heart Institute and School of Kinesiology and Exercise Science, Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada (D.G.)
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12
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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 PMCID: PMC11340124 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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13
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Raph SM, Calderin EP, Nong Y, Brittian K, Garrett L, Zhang D, Nystoriak MA. Kv beta complex facilitates exercise-induced augmentation of myocardial perfusion and cardiac growth. Front Cardiovasc Med 2024; 11:1411354. [PMID: 38978788 PMCID: PMC11228310 DOI: 10.3389/fcvm.2024.1411354] [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: 04/02/2024] [Accepted: 05/21/2024] [Indexed: 07/10/2024] Open
Abstract
The oxygen sensitivity of voltage-gated potassium (Kv) channels regulates cardiovascular physiology. Members of the Kv1 family interact with intracellular Kvβ proteins, which exhibit aldo-keto reductase (AKR) activity and confer redox sensitivity to Kv channel gating. The Kvβ proteins contribute to vasoregulation by controlling outward K+ currents in smooth muscle upon changes in tissue oxygen consumption and demand. Considering exercise as a primary physiological stimulus of heightened oxygen demand, the current study tested the role of Kvβ proteins in exercise performance, exercise-induced adaptations in myocardial perfusion, and physiological cardiac growth. Our findings reveal that genetic ablation of Kvβ2 proteins diminishes baseline exercise capacity in mice and attenuates the enhancement in exercise performance observed after long-term training. Moreover, we demonstrate that Kvβ2 proteins are critical for exercise-mediated enhancement in myocardial perfusion during cardiac stress as well as adaptive changes in cardiac structure. Our results underscore the importance of Kvβ proteins in metabolic vasoregulation, highlighting their role in modulating both exercise capacity and cardiovascular benefits associated with training. Furthermore, our study sheds light on a novel molecular target for enhancing exercise performance and improving the health benefits associated with exercise training in patients with limited capacity for physical activity.
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Affiliation(s)
| | | | | | | | | | | | - Matthew A. Nystoriak
- Center for Cardiometabolic Science, Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY, United States
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14
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Cuccurullo SJ, Fleming TK, Petrosyan H, Hanley DF, Raghavan P. Mechanisms and benefits of cardiac rehabilitation in individuals with stroke: emerging role of its impact on improving cardiovascular and neurovascular health. Front Cardiovasc Med 2024; 11:1376616. [PMID: 38756753 PMCID: PMC11096558 DOI: 10.3389/fcvm.2024.1376616] [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: 01/25/2024] [Accepted: 04/17/2024] [Indexed: 05/18/2024] Open
Abstract
Human and animal studies have demonstrated the mechanisms and benefits of aerobic exercise for both cardiovascular and neurovascular health. Aerobic exercise induces neuroplasticity and neurophysiologic reorganization of brain networks, improves cerebral blood flow, and increases whole-body VO2peak (peak oxygen consumption). The effectiveness of a structured cardiac rehabilitation (CR) program is well established and a vital part of the continuum of care for people with cardiovascular disease. Individuals post stroke exhibit decreased cardiovascular capacity which impacts their neurologic recovery and extends disability. Stroke survivors share the same risk factors as patients with cardiac disease and can therefore benefit significantly from a comprehensive CR program in addition to neurorehabilitation to address their cardiovascular health. The inclusion of individuals with stroke into a CR program, with appropriate adaptations, can significantly improve their cardiovascular health, promote functional recovery, and reduce future cardiovascular and cerebrovascular events thereby reducing the economic burden of stroke.
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Affiliation(s)
- Sara J. Cuccurullo
- Department of Physical Medicine and Rehabilitation, JFK Johnson Rehabilitation Institute at Hackensack Meridian Health, Edison, NJ, United States
| | - Talya K. Fleming
- Department of Physical Medicine and Rehabilitation, JFK Johnson Rehabilitation Institute at Hackensack Meridian Health, Edison, NJ, United States
| | - Hayk Petrosyan
- Department of Physical Medicine and Rehabilitation, JFK Johnson Rehabilitation Institute at Hackensack Meridian Health, Edison, NJ, United States
| | - Daniel F. Hanley
- Brain Injury Outcomes, Johns Hopkins Medical Institutions, Baltimore, MD, United States
| | - Preeti Raghavan
- Department of Physical Medicine and Rehabilitation and Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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15
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Tune JD, Warne CM, Essajee SI, Tucker SM, Figueroa CA, Dick GM, Beard DA. Unraveling the Gordian knot of coronary pressure-flow autoregulation. J Mol Cell Cardiol 2024; 190:82-91. [PMID: 38608928 DOI: 10.1016/j.yjmcc.2024.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/27/2024] [Accepted: 04/09/2024] [Indexed: 04/14/2024]
Abstract
The coronary circulation has the inherent ability to maintain myocardial perfusion constant over a wide range of perfusion pressures. The phenomenon of pressure-flow autoregulation is crucial in response to flow-limiting atherosclerotic lesions which diminish coronary driving pressure and increase risk of myocardial ischemia and infarction. Despite well over half a century of devoted research, understanding of the mechanisms responsible for autoregulation remains one of the most fundamental and contested questions in the field today. The purpose of this review is to highlight current knowledge regarding the complex interrelationship between the pathways and mechanisms proposed to dictate the degree of coronary pressure-flow autoregulation. Our group recently likened the intertwined nature of the essential determinants of coronary flow control to the symbolically unsolvable "Gordian knot". To further efforts to unravel the autoregulatory "knot", we consider recent challenges to the local metabolic and myogenic hypotheses and the complicated dynamic structural and functional heterogeneity unique to the heart and coronary circulation. Additional consideration is given to interrogation of putative mediators, role of K+ and Ca2+ channels, and recent insights from computational modeling studies. Improved understanding of how specific vasoactive mediators, pathways, and underlying disease states influence coronary pressure-flow relations stands to significantly reduce morbidity and mortality for what remains the leading cause of death worldwide.
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Affiliation(s)
- Johnathan D Tune
- Department of Physiology and Anatomy, University of North Texas Health Science Center, USA.
| | - Cooper M Warne
- Department of Physiology and Anatomy, University of North Texas Health Science Center, USA
| | - Salman I Essajee
- Department of Physiology and Anatomy, University of North Texas Health Science Center, USA
| | - Selina M Tucker
- Department of Physiology and Anatomy, University of North Texas Health Science Center, USA
| | - C Alberto Figueroa
- Section of Vascular Surgery, Department of Surgery, University of Michigan, USA; Department of Biomedical Engineering, University of Michigan, USA
| | - Gregory M Dick
- Department of Physiology and Anatomy, University of North Texas Health Science Center, USA
| | - Daniel A Beard
- Department of Molecular and Integrative Physiology, University of Michigan, USA
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16
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von Känel R, Princip M, Holzgang SA, Rossi A, Giannopoulos AA, Buechel RR, Zuccarella-Hackl C, Pazhenkottil AP. Association Between Global Sleep Quality and Coronary Microvascular Function in Male Physicians With Occupational Burnout. Psychosom Med 2024; 86:216-226. [PMID: 37982536 DOI: 10.1097/psy.0000000000001269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
OBJECTIVE Occupational burnout has been associated with an increased risk of coronary heart disease, although the mechanisms involved are elusive. We investigated whether poor global sleep quality is associated with impaired coronary microvascular function in male physicians, a professional group at increased risk of burnout. METHODS Study participants were 30 male physicians with clinical burnout and 30 controls without burnout defined by the Maslach Burnout Inventory. Global sleep quality was measured with the Pittsburgh Sleep Quality Index (PSQI). Endothelium-dependent (cold pressor test) and endothelium-independent (adenosine challenge) coronary microvascular functions were quantified with myocardial perfusion positron emission tomography. In multivariable analyses, the interaction between burnout and the PSQI global score was regressed on measures of coronary microvascular function, adjusting for age, body mass index, physical activity, alcohol consumption, and main effects of burnout and PSQI score. RESULTS The prevalence of poor sleepers (PSQI score >5) was 40% in the burnout group and 10% in the control group. Adjusting for covariates, burnout-by-global PSQI score interactions were observed for myocardial blood flow (MBF) at rest ( r partial = -0.30, p = .025), endothelium-dependent coronary flow reserve ( r partial = -0.26, p = .062), MBF response ( r partial = -0.30, p = .028), and hyperemic MBF ( r partial = -0.34, p = .012). The global PSQI score was inversely associated with these MBF measures in the burnout group relative to the control group. No significant interactions emerged for endothelium-independent MBF. CONCLUSIONS In male physicians with occupational burnout, poor global sleep quality was associated with reduced endothelium-dependent coronary microvascular function, suggesting a mechanism by which burnout may affect cardiovascular health.
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Affiliation(s)
- Roland von Känel
- From the Department of Consultation-Liaison Psychiatry and Psychosomatic Medicine (von Känel, Princip, Holzgang, Zuccarella-Hackl, Pazhenkottil), Cardiac Imaging, Department of Nuclear Medicine (Rossi, Giannopoulos, Buechel, Pazhenkottil), and Department of Cardiology (Pazhenkottil), University Hospital Zurich, University of Zurich, Zurich, Switzerland
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17
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Silişteanu SC, Antonescu E, Duică L, Totan M, Cucu AI, Costea AI. Lumbar Paravertebral Muscle Pain Management Using Kinesitherapy and Electrotherapeutic Modalities. Healthcare (Basel) 2024; 12:853. [PMID: 38667615 PMCID: PMC11050304 DOI: 10.3390/healthcare12080853] [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: 03/06/2024] [Revised: 04/05/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Low back pain is considered a public health problem internationally. Low back pain is a cause of disability that occurs in adolescents and causes negative effects in adults as well. The work environment and physical and psychosocial factors can influence the occurrence and evolution of low back pain. METHODS The purpose of this paper is to highlight the physiological and functional changes in young adults with painful conditions of the lumbar spine, after using exercise therapy. The study was of the longitudinal type and was carried out over a period 6 months in an outpatient setting. The rehabilitation treatment included electrotherapeutic modalities and kinesitherapy. RESULTS The results obtained when evaluating each parameter, for all moments, show statistically significant values in both groups. The results obtained regarding the relationship between the therapeutic modalities specific to rehabilitation medicine and low back pain are consistent with those reported in studies. CONCLUSIONS Depending on the clinical-functional status of each patient, kinesitherapy can accelerate the heart rate and increase the blood pressure and oxygen saturation of the arterial blood, values that can later return to their initial levels, especially through training.
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Affiliation(s)
- Sînziana Călina Silişteanu
- Faculty of Medicine and Biological Sciences, Stefan cel Mare University of Suceava, 720229 Suceava, Romania; (S.C.S.); (A.I.C.); (A.I.C.)
| | - Elisabeta Antonescu
- Faculty of Medicine, Lucian Blaga University of Sibiu, 550169 Sibiu, Romania;
| | - Lavinia Duică
- Faculty of Medicine, Lucian Blaga University of Sibiu, 550169 Sibiu, Romania;
| | - Maria Totan
- Faculty of Medicine, Lucian Blaga University of Sibiu, 550169 Sibiu, Romania;
| | - Andrei Ionuţ Cucu
- Faculty of Medicine and Biological Sciences, Stefan cel Mare University of Suceava, 720229 Suceava, Romania; (S.C.S.); (A.I.C.); (A.I.C.)
| | - Andrei Ioan Costea
- Faculty of Medicine and Biological Sciences, Stefan cel Mare University of Suceava, 720229 Suceava, Romania; (S.C.S.); (A.I.C.); (A.I.C.)
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18
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Sakai K, Storozhenko T, Mizukami T, Ohashi H, Bouisset F, Tajima A, van Hoe L, Gallinoro E, Botti G, Mahendiran T, Pardaens S, Brouwers S, Fawaz S, Keeble TR, Davies JR, Sonck J, De Bruyne B, Collet C. Impact of vessel volume on thermodilution measurements in patients with coronary microvascular dysfunction. Catheter Cardiovasc Interv 2024. [PMID: 38566527 DOI: 10.1002/ccd.31020] [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: 11/14/2023] [Revised: 02/05/2024] [Accepted: 03/19/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Two invasive methods are available to estimate microvascular resistance: bolus and continuous thermodilution. Comparative studies have revealed a lack of concordance between measurements of microvascular resistance obtained through these techniques. AIMS This study aimed to examine the influence of vessel volume on bolus thermodilution measurements. METHODS We prospectively included patients with angina with non-obstructive coronary arteries (ANOCA) undergoing bolus and continuous thermodilution assessments. All patients underwent coronary CT angiography to extract vessel volume. Coronary microvascular dysfunction was defined as coronary flow reserve (CFR) < 2.0. Measurements of absolute microvascular resistance (in Woods units) and index of microvascular resistance (IMR) were compared before and after volumetric adjustment. RESULTS Overall, 94 patients with ANOCA were included in this study. The mean age was 64.7 ± 10.8 years, 48% were female, and 19% had diabetes. The prevalence of CMD was 16% based on bolus thermodilution, while continuous thermodilution yielded a prevalence of 27% (Cohen's Kappa 0.44, 95% CI 0.23-0.65). There was no correlation in microvascular resistance between techniques (r = 0.17, 95% CI -0.04 to 0.36, p = 0.104). The adjustment of IMR by vessel volume significantly increased the agreement with absolute microvascular resistance derived from continuous thermodilution (r = 0.48, 95% CI 0.31-0.63, p < 0.001). CONCLUSIONS In patients with ANOCA, invasive methods based on coronary thermodilution yielded conflicting results for the assessment of CMD. Adjusting IMR with vessel volume improved the agreement with continuous thermodilution for the assessment of microvascular resistance. These findings strongly suggest the importance of considering vessel volume when interpreting bolus thermodilution assessment.
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Affiliation(s)
- Koshiro Sakai
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Medicine, Division of Cardiology, Showa University School of Medicine, Tokyo, Japan
| | - Tatyana Storozhenko
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Prevention and Treatment of Emergency Conditions, L.T. Malaya Therapy National Institute NAMSU, Kharkiv, Ukraine
| | - Takuya Mizukami
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Division of Clinical Pharmacology, Department of Pharmacology, Showa University, Tokyo, Japan
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - Hirofumi Ohashi
- Department of Cardiology, Aichi Medical University, Aichi, Japan
| | - Frederic Bouisset
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Cardiology, Toulouse University Hospital, Toulouse, France
| | - Atomu Tajima
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Cardiology, Aichi Medical University, Aichi, Japan
| | | | - Emanuele Gallinoro
- Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Giulia Botti
- Interventional Cardiology Unit, IRCCS Ospedale San Raffaele, Milan, Italy
| | | | | | - Sofie Brouwers
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Experimental Pharmacology, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Samer Fawaz
- Essex Cardiothoracic Centre, Mid and South Essex NHS Foundation Trust, Basildon, UK
- MTRC, Anglia Ruskin School of Medicine, Chelmsford, Essex, UK
| | - Thomas R Keeble
- Essex Cardiothoracic Centre, Mid and South Essex NHS Foundation Trust, Basildon, UK
- MTRC, Anglia Ruskin School of Medicine, Chelmsford, Essex, UK
| | - John R Davies
- Essex Cardiothoracic Centre, Mid and South Essex NHS Foundation Trust, Basildon, UK
- MTRC, Anglia Ruskin School of Medicine, Chelmsford, Essex, UK
| | - Jeroen Sonck
- 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
| | - Carlos Collet
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
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19
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Zhu XH, Chen W. Quantitative 17 O MRSI of myocardial oxygen metabolic rate, blood flow, and oxygen extraction fraction under normal and high workload conditions. Magn Reson Med 2024; 91:1645-1658. [PMID: 38084378 PMCID: PMC11089813 DOI: 10.1002/mrm.29908] [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: 05/16/2023] [Revised: 10/05/2023] [Accepted: 10/12/2023] [Indexed: 02/03/2024]
Abstract
PURPOSE The heart is a highly aerobic organ consuming most of the oxygen the body in supporting heart function. Quantitative imaging of myocardial oxygen metabolism and perfusion is essential for studying cardiac physiopathology in vivo. Here, we report a new imaging method that can simultaneously assess myocardial oxygen metabolism and blood flow in the rat heart. METHODS This novel method is based on the 17 O-MRSI combined with brief inhalation of 17 O-isotope labeled oxygen gas for quantitative imaging of myocardial metabolic rate of oxygen consumption (MVO2 ), myocardial blood flow (MBF), and oxygen extraction fraction (OEF). We demonstrate this imaging method under basal and high workload conditions in rat hearts at 9.4 T. RESULTS We show that this 17 O MRSI-based approach can directly measure and image MVO2 (1.35-4.06 μmol/g/min), MBF (0.49-1.38 mL/g/min), and OEF (0.33-0.44) in the heart of anesthetized rat under basal and high workload (21.6 × 103 -56.7 × 103 mmHg • bpm) conditions. Under high workload condition, MVO2 and MBF values in healthy rats approximately doubled, whereas OEF remained unchanged, indicating a strong coupling between myocardial oxygen metabolic demand and supply through blood perfusion. CONCLUSION The 17 O-MRSI method has been used to simultaneously image the myocardial metabolic rate of oxygen consumption, blood flow, and oxygen extraction fraction in small animal hearts, which are sensitive to the physiological changes induced by high workload. This approach could provide comprehensive measures that are critical for studying myocardial function in normal and diseased states and has a potential for translation.
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Affiliation(s)
- Xiao-Hong Zhu
- Center for Magnetic Resonance Research, Radiology Department, University of Minnesota, Minneapolis, Minnesota, USA
| | - Wei Chen
- Center for Magnetic Resonance Research, Radiology Department, University of Minnesota, Minneapolis, Minnesota, USA
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20
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Hastings MH, Castro C, Freeman R, Abdul Kadir A, Lerchenmüller C, Li H, Rhee J, Roh JD, Roh K, Singh AP, Wu C, Xia P, Zhou Q, Xiao J, Rosenzweig A. Intrinsic and Extrinsic Contributors to the Cardiac Benefits of Exercise. JACC Basic Transl Sci 2024; 9:535-552. [PMID: 38680954 PMCID: PMC11055208 DOI: 10.1016/j.jacbts.2023.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/06/2023] [Accepted: 07/20/2023] [Indexed: 05/01/2024]
Abstract
Among its many cardiovascular benefits, exercise training improves heart function and protects the heart against age-related decline, pathological stress, and injury. Here, we focus on cardiac benefits with an emphasis on more recent updates to our understanding. While the cardiomyocyte continues to play a central role as both a target and effector of exercise's benefits, there is a growing recognition of the important roles of other, noncardiomyocyte lineages and pathways, including some that lie outside the heart itself. We review what is known about mediators of exercise's benefits-both those intrinsic to the heart (at the level of cardiomyocytes, fibroblasts, or vascular cells) and those that are systemic (including metabolism, inflammation, the microbiome, and aging)-highlighting what is known about the molecular mechanisms responsible.
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Affiliation(s)
- Margaret H. Hastings
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Claire Castro
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Rebecca Freeman
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Azrul Abdul Kadir
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Carolin Lerchenmüller
- Department of Cardiology, University Hospital Heidelberg, German Center for Cardiovascular Research (DZHK), Partner Site Heidelberg/Mannheim, Heidelberg, Germany
| | - Haobo Li
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - James Rhee
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Anesthesiology and Critical Care, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jason D. Roh
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Kangsan Roh
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Anesthesiology and Critical Care, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Anand P. Singh
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Chao Wu
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Peng Xia
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Qiulian Zhou
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Junjie Xiao
- Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai, China
| | - Anthony Rosenzweig
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
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21
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Jia M, Wang Z, Hu F. Causal relationship between physical activity and platelet traits: a Mendelian randomization study. Front Physiol 2024; 15:1371638. [PMID: 38571721 PMCID: PMC10987957 DOI: 10.3389/fphys.2024.1371638] [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: 01/16/2024] [Accepted: 02/28/2024] [Indexed: 04/05/2024] Open
Abstract
Introduction: The purpose of this study was to discuss the causal relationship between physical activity and platelet traits. Methods: A dataset from a large-scale European physical activity and platelet traits was collected by using Mendelian randomization of the study. For the analysis, the inverse variance weighting method, weighted median and MR-Egger were used to estimate causal effects. The sensitivity analyses were also performed using Cochran's Q test, funnel plots and Leave-one-out analysis. Results: Light DIY, other exercises, strenuous sports, walking for pleasure were significantly associated with a decrease in platelet crit. But none of the heavy /light DIY was associated with increase in platelet crit. Other exercises and strenuous sports were associated with decrease in platelet count. Conclusion: Some types of physical activity have a causal relationship with platelet crit and platelet count. However, the types of physical activity we studied have not supported a causal relationship with mean platelet volume and platelet distribution width.
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Affiliation(s)
| | - Zhiyong Wang
- Department of Physical Education, Dong-A University, Busan, Republic of Korea
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22
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Longden TA, Lederer WJ. Electro-metabolic signaling. J Gen Physiol 2024; 156:e202313451. [PMID: 38197953 PMCID: PMC10783436 DOI: 10.1085/jgp.202313451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/27/2023] [Accepted: 12/14/2023] [Indexed: 01/11/2024] Open
Abstract
Precise matching of energy substrate delivery to local metabolic needs is essential for the health and function of all tissues. Here, we outline a mechanistic framework for understanding this critical process, which we refer to as electro-metabolic signaling (EMS). All tissues exhibit changes in metabolism over varying spatiotemporal scales and have widely varying energetic needs and reserves. We propose that across tissues, common signatures of elevated metabolism or increases in energy substrate usage that exceed key local thresholds rapidly engage mechanisms that generate hyperpolarizing electrical signals in capillaries that then relax contractile elements throughout the vasculature to quickly adjust blood flow to meet changing needs. The attendant increase in energy substrate delivery serves to meet local metabolic requirements and thus avoids a mismatch in supply and demand and prevents metabolic stress. We discuss in detail key examples of EMS that our laboratories have discovered in the brain and the heart, and we outline potential further EMS mechanisms operating in tissues such as skeletal muscle, pancreas, and kidney. We suggest that the energy imbalance evoked by EMS uncoupling may be central to cellular dysfunction from which the hallmarks of aging and metabolic diseases emerge and may lead to generalized organ failure states-such as diverse flavors of heart failure and dementia. Understanding and manipulating EMS may be key to preventing or reversing these dysfunctions.
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Affiliation(s)
- Thomas A. Longden
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD, USA
- Laboratory of Neurovascular Interactions, Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - W. Jonathan Lederer
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD, USA
- Laboratory of Molecular Cardiology, Center for Biomedical Engineering and Technology, University of Maryland School of Medicine, Baltimore, MD, USA
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23
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Stevens JA, Dobratz TC, Fischer KD, Palmer A, Bourdage K, Wong AJ, Chapoy-Villanueva H, Garry DJ, Liu JC, Kay MW, Kuzmiak-Glancy S, Townsend D. Mechanisms of reduced myocardial energetics of the dystrophic heart. Am J Physiol Heart Circ Physiol 2024; 326:H396-H407. [PMID: 38099842 PMCID: PMC11219055 DOI: 10.1152/ajpheart.00636.2023] [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: 10/03/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 01/23/2024]
Abstract
Heart disease is a leading cause of death in patients with Duchenne muscular dystrophy (DMD), characterized by the progressive replacement of contractile tissue with scar tissue. Effective therapies for dystrophic cardiomyopathy will require addressing the disease before the onset of fibrosis, however, the mechanisms of the early disease are poorly understood. To understand the pathophysiology of DMD, we perform a detailed functional assessment of cardiac function of the mdx mouse, a model of DMD. These studies use a combination of functional, metabolomic, and spectroscopic approaches to fully characterize the contractile, energetic, and mitochondrial function of beating hearts. Through these innovative approaches, we demonstrate that the dystrophic heart has reduced cardiac reserve and is energetically limited. We show that this limitation does not result from poor delivery of oxygen. Using spectroscopic approaches, we provide evidence that mitochondria in the dystrophic heart have attenuated mitochondrial membrane potential and deficits in the flow of electrons in complex IV of the electron transport chain. These studies provide evidence that poor myocardial energetics precede the onset of significant cardiac fibrosis and likely results from mitochondrial dysfunction centered around complex IV and reduced membrane potential. The multimodal approach used here implicates specific molecular components in the etiology of reduced energetics. Future studies focused on these targets may provide therapies that improve the energetics of the dystrophic heart leading to improved resiliency against damage and preservation of myocardial contractile tissue.NEW & NOTEWORTHY Dystrophic hearts have poor contractile reserve that is associated with a reduction in myocardial energetics. We demonstrate that oxygen delivery does not contribute to the limited energy production of the dystrophic heart even with increased workloads. Cytochrome optical spectroscopy of the contracting heart reveals alterations in complex IV and evidence of depolarized mitochondrial membranes. We show specific alterations in the electron transport chain of the dystrophic heart that may contribute to poor myocardial energetics.
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Affiliation(s)
- Jackie A Stevens
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
| | - Tyler C Dobratz
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
| | - Kaleb D Fischer
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
| | - Alexandria Palmer
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
| | - Kira Bourdage
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
| | - Anne J Wong
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
| | - Hector Chapoy-Villanueva
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
- Institute for Obesity Research Tecnologico de Monterrey, Monterrey, Mexico
| | - Daniel J Garry
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
- Lillehei Heart Institute, Cardiovascular Division, University of Minnesota, Minneapolis, Minnesota, United States
- Paul and Sheila Muscular Dystrophy Center, University of Minnesota, Minneapolis, Minnesota, United States
| | - Julia C Liu
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
| | - Matthew W Kay
- Department of Biomedical Engineering, School of Engineering and Applied Science, George Washington University, Washington, District of Columbia, United States
| | - Sarah Kuzmiak-Glancy
- Department of Kinesiology, School of Public Health, University of Maryland, College Park, Maryland, United States
| | - DeWayne Townsend
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, United States
- Lillehei Heart Institute, Cardiovascular Division, University of Minnesota, Minneapolis, Minnesota, United States
- Paul and Sheila Muscular Dystrophy Center, University of Minnesota, Minneapolis, Minnesota, United States
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24
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Pruthi S, Siddiqui E, Smilowitz NR. Beyond Coronary Artery Disease: Assessing the Microcirculation. Cardiol Clin 2024; 42:125-135. [PMID: 37949533 PMCID: PMC11090694 DOI: 10.1016/j.ccl.2023.07.003] [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] [Indexed: 11/12/2023]
Abstract
Ischemic heart disease (IHD) affects more than 20 million adults in the United States. Although classically attributed to atherosclerosis of the epicardial coronary arteries, nearly half of patients with stable angina and IHD who undergo invasive coronary angiography do not have obstructive epicardial coronary artery disease. Ischemia with nonobstructive coronary arteries is frequently caused by microvascular angina with underlying coronary microvascular dysfunction (CMD). Greater understanding the pathophysiology, diagnosis, and treatment of CMD holds promise to improve clinical outcomes of patients with ischemic heart disease.
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Affiliation(s)
- Sonal Pruthi
- Division of Cardiology, Department of Medicine, NYU Langone Health, 550 First Avenue, New York, NY 10016, USA
| | - Emaad Siddiqui
- Division of Cardiology, Department of Medicine, NYU Langone Health, 550 First Avenue, New York, NY 10016, USA
| | - Nathaniel R Smilowitz
- Division of Cardiology, Department of Medicine, NYU Langone Health, 550 First Avenue, New York, NY 10016, USA; Cardiology Section, Department of Medicine, VA New York Harbor Healthcare System, 423 East 23rd Street, New York, NY 10010, USA; The Leon H. Charney Division of Cardiology, NYU Langone Health, NYU School of Medicine, 423 East 23rd Street, 12-West, New York, NY 10010, USA.
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25
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Gimhani D, Shanks J, Pachen M, Chang JWH, Ramchandra R. Sympathetic transduction of cardiac sympathetic nerve activity in healthy, conscious sheep. J Physiol 2024; 602:619-632. [PMID: 38329227 DOI: 10.1113/jp285079] [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: 06/01/2023] [Accepted: 01/16/2024] [Indexed: 02/09/2024] Open
Abstract
Sympathetic transduction is the study of how impulses of sympathetic nerve activity (SNA) affect end-organ function. Recently, the transduction of resting bursts of muscle SNA (MSNA) has been investigated and shown to have a role in the maintenance of blood pressure through changes in vascular tone in humans. In the present study, we investigate whether directly recorded resting cardiac SNA (CSNA) regulates heart rate (HR), coronary blood flow (CoBF), coronary vascular conductance (CVC), cardiac output (CO) and mean arterial pressure. Instrumentation was undertaken to record CSNA and relevant vascular variables in conscious sheep. Recordings were performed at baseline, as well as after the infusion of a β-adrenoceptor blocker (propranolol) to determine the role of β-adrenergic signalling in sympathetic transduction in the heart. The results show that after every burst of CSNA, there was a significant effect of time on HR (n = 10, ∆: +2.1 ± 1.4 beats min-1 , P = 0.002) and CO (n = 8, ∆: +100 ± 150 mL min-1 , P = 0.002) was elevated, followed by an increase in CoBF (n = 9, ∆: +0.76 mL min-1 , P = 0.001) and CVC (n = 8, ∆: +0.0038 mL min-1 mmHg-1 , P = 0.0028). The changes in HR were graded depending on the size and pattern of CSNA bursts. The HR response was significantly attenuated after the infusion of propranolol. Our study is the first to explore resting sympathetic transduction in the heart, suggesting that CSNA can dynamically change HR mediated by an action on β-adrenoceptors. KEY POINTS: Sympathetic transduction is the study of how impulses of sympathetic nerve activity (SNA) affect end-organ function. Previous studies have examined sympathetic transduction primarily in the skeletal muscle and shown that bursts of muscle SNA alter blood flow to skeletal muscle and mean arterial pressure, although this has not been examined in the heart. We investigated sympathetic transduction in the heart and show that, in the conscious condition, the size of bursts of SNA to the heart can result in incremental increases in heart rate and coronary blood flow mediated by β-adrenoceptors. The pattern of bursts of SNA to the heart also resulted in incremental increases in heart rate mediated by β-adrenoceptors. This is the first study to explore the transduction of bursts of SNA to the heart.
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Affiliation(s)
- Dilsha Gimhani
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Julia Shanks
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Mridula Pachen
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Joshua W-H Chang
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Rohit Ramchandra
- Department of Physiology, University of Auckland, Auckland, New Zealand
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26
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Kharvani HR, Aghanajafi C. Investigation into the two-way interaction of coronary flow and heart function in coronary artery disease predicted by a computational model of autoregulation of coronary flow. J Biomech 2024; 164:111970. [PMID: 38325193 DOI: 10.1016/j.jbiomech.2024.111970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 01/22/2024] [Accepted: 01/28/2024] [Indexed: 02/09/2024]
Abstract
This study presents a closed-loop computational model to investigate the interplay between heart function, coronary flow, and systemic circulation during exercise, with a specific focus on the impact of coronary artery stenosis. The model incorporates a lumped representation of the heart, main arteries, and coronary arteries, establishing a closed circulatory system. The simulation investigates the autoregulation of coronary flow in response to myocardial oxygen demands during physical exercise by incorporating sympathetic and parasympathetic functions. This study establishes a closed supply-demand loop and investigates the effect of coronary flow deficiency on heart function and systemic circulation in coronary artery diseases during exercise. In coronary artery diseases with low stenosis, heart function and systemic flow resemble those of a healthy person. However, as stenosis intensifies with physical exercise, an additional regulatory mechanism (reg2) is activated. This mechanism adjusts coronary flow by reducing myocardial contractility (E) and increasing heart rate (HR) while maintaining cardiac output (CO). The study results indicate that, at the highest exercise intensity for a healthy individual (HR = 150), the value of E increases from 6 to 8.65mmHg/ml. Meanwhile, for a patient with 85 % coronary artery stenosis in the same exercise intensity, the HR increases to 200, and the value of E decreases to 3.45mmHg/ml. The results also demonstrate that the initiation of the (reg2) mechanism at rest occurs at 83 % stenosis, while at the highest exercise intensity, this mechanism commences at 67 % stenosis.
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Affiliation(s)
| | - Cyrus Aghanajafi
- Faculty of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, Iran.
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27
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Panagiotides NG, Poledniczek M, Andreas M, Hülsmann M, Kocher AA, Kopp CW, Piechota-Polanczyk A, Weidenhammer A, Pavo N, Wadowski PP. Myocardial Oedema as a Consequence of Viral Infection and Persistence-A Narrative Review with Focus on COVID-19 and Post COVID Sequelae. Viruses 2024; 16:121. [PMID: 38257821 PMCID: PMC10818479 DOI: 10.3390/v16010121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 01/02/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Microvascular integrity is a critical factor in myocardial fluid homeostasis. The subtle equilibrium between capillary filtration and lymphatic fluid removal is disturbed during pathological processes leading to inflammation, but also in hypoxia or due to alterations in vascular perfusion and coagulability. The degradation of the glycocalyx as the main component of the endothelial filtration barrier as well as pericyte disintegration results in the accumulation of interstitial and intracellular water. Moreover, lymphatic dysfunction evokes an increase in metabolic waste products, cytokines and inflammatory cells in the interstitial space contributing to myocardial oedema formation. This leads to myocardial stiffness and impaired contractility, eventually resulting in cardiomyocyte apoptosis, myocardial remodelling and fibrosis. The following article reviews pathophysiological inflammatory processes leading to myocardial oedema including myocarditis, ischaemia-reperfusion injury and viral infections with a special focus on the pathomechanisms evoked by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. In addition, clinical implications including potential long-term effects due to viral persistence (long COVID), as well as treatment options, are discussed.
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Affiliation(s)
- Noel G. Panagiotides
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, 1090 Vienna, Austria; (N.G.P.); (M.P.); (M.H.); (A.W.); (N.P.)
| | - Michael Poledniczek
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, 1090 Vienna, Austria; (N.G.P.); (M.P.); (M.H.); (A.W.); (N.P.)
- Division of Angiology, Department of Internal Medicine II, Medical University of Vienna, 1090 Vienna, Austria;
| | - Martin Andreas
- Department of Cardiac Surgery, Medical University of Vienna, 1090 Vienna, Austria; (M.A.); (A.A.K.)
| | - Martin Hülsmann
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, 1090 Vienna, Austria; (N.G.P.); (M.P.); (M.H.); (A.W.); (N.P.)
| | - Alfred A. Kocher
- Department of Cardiac Surgery, Medical University of Vienna, 1090 Vienna, Austria; (M.A.); (A.A.K.)
| | - Christoph W. Kopp
- Division of Angiology, Department of Internal Medicine II, Medical University of Vienna, 1090 Vienna, Austria;
| | | | - Annika Weidenhammer
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, 1090 Vienna, Austria; (N.G.P.); (M.P.); (M.H.); (A.W.); (N.P.)
| | - Noemi Pavo
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, 1090 Vienna, Austria; (N.G.P.); (M.P.); (M.H.); (A.W.); (N.P.)
| | - Patricia P. Wadowski
- Division of Angiology, Department of Internal Medicine II, Medical University of Vienna, 1090 Vienna, Austria;
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28
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Collins PD, Giosa L, Camporota L, Barrett NA. State of the art: Monitoring of the respiratory system during veno-venous extracorporeal membrane oxygenation. Perfusion 2024; 39:7-30. [PMID: 38131204 DOI: 10.1177/02676591231210461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Monitoring the patient receiving veno-venous extracorporeal membrane oxygenation (VV ECMO) is challenging due to the complex physiological interplay between native and membrane lung. Understanding these interactions is essential to understand the utility and limitations of different approaches to respiratory monitoring during ECMO. We present a summary of the underlying physiology of native and membrane lung gas exchange and describe different tools for titrating and monitoring gas exchange during ECMO. However, the most important role of VV ECMO in severe respiratory failure is as a means of avoiding further ergotrauma. Although optimal respiratory management during ECMO has not been defined, over the last decade there have been advances in multimodal respiratory assessment which have the potential to guide care. We describe a combination of imaging, ventilator-derived or invasive lung mechanic assessments as a means to individualise management during ECMO.
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Affiliation(s)
- Patrick Duncan Collins
- Department of Critical Care Medicine, Guy's and St Thomas' National Health Service Foundation Trust, London, UK
- Centre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, King's College London, London, UK
| | - Lorenzo Giosa
- Department of Critical Care Medicine, Guy's and St Thomas' National Health Service Foundation Trust, London, UK
| | - Luigi Camporota
- Department of Critical Care Medicine, Guy's and St Thomas' National Health Service Foundation Trust, London, UK
- Centre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, King's College London, London, UK
| | - Nicholas A Barrett
- Department of Critical Care Medicine, Guy's and St Thomas' National Health Service Foundation Trust, London, UK
- Centre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, King's College London, London, UK
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29
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Siddiqi TJ, Usman MS, Siddiqui A, Salman A, Talbot N, Khan LA, Shabbir A, Hall ME, Taffet GE. Association of low diastolic blood pressure with cardiovascular outcomes and all-cause mortality: A meta-analysis. Curr Probl Cardiol 2024; 49:102131. [PMID: 37866417 DOI: 10.1016/j.cpcardiol.2023.102131] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 10/14/2023] [Indexed: 10/24/2023]
Abstract
BACKGROUND Reduction of diastolic blood pressure (DBP) below 70 mmHg may decrease perfusion to the heart and worsen cardiovascular (CV) outcomes. AIMS Explore the association between low DBP and CV outcomes. METHODS We searched the online databases until August 2023 for studies reporting the risk of all-cause mortality (ACM) or CV outcomes in patients with low versus normal DBP (70-80mm Hg). RESULTS Inclusion of 10 studies (n = 1,998,223 patients) found that a mean achieved DBP < 60 mmHg was associated with an increased risk of all-cause mortality (HR 1.48; 95 % CI [1.26-1.74]), especially in patients with pre-existing CV disease. It was also associated to a higher risk of major adverse cardiovascular events (HR 1.84; [1.28-2.65]) and myocardial infarction (HR 1.49; [1.13-1.97]). A DBP of 60-69 mmHg was associated with an increased risk of all-cause mortality (HR 1.11; [1.03-1.20]). CONCLUSION Reduction of DBP, particularly below 60 mmHg, is associated with increased risk of ACM.
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Affiliation(s)
- Tariq Jamal Siddiqi
- Department of Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | | | - Amna Siddiqui
- Department of Medicine, Karachi Medical and Dental College, Karachi, Pakistan
| | - Ali Salman
- Department of Medicine, Dow University of Health Sciences, Karachi, Pakistan
| | - Nicholas Talbot
- Department of Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Laibah Arshad Khan
- Department of Medicine, King Edward Medical University, Lahore, Pakistan
| | - Aisha Shabbir
- Department of Medicine, King Edward Medical University, Lahore, Pakistan
| | - Michael E Hall
- Associate Division Director, Division of Cardiovascular Diseases, Department of Medicine, University of Mississippi Medical Center
| | - George E Taffet
- Professor of Medicine-Geriatrics, Department of Medicine, Baylor College of Medicine, Houston, TX, USA; Professor of Medicine, Department of Medicine, Houston Methodist Hospital, Houston, Texas, USA
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30
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Zang W, Chen H, Yan J, Li D, Xiao N, Zheng X, Zhang Z. Research trends and hotspots of exercise for people with sarcopenic: A bibliometric analysis. Medicine (Baltimore) 2023; 102:e35148. [PMID: 38115285 PMCID: PMC10727540 DOI: 10.1097/md.0000000000035148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/15/2023] [Accepted: 08/18/2023] [Indexed: 12/21/2023] Open
Abstract
This study aimed to analyze the trends and themes in exercise and sarcopenia research using a bibliometric approach. The Web of Science citation database was used to identify papers published on exercise and sarcopenia. The retrieved data on institutions, journals, countries, authors, journal distribution, and keywords were analyzed scientometric ally using CiteSpace and VOSviewer. 2895 papers were included according to our specified inclusion criteria eventually. The data showed an upward trend in the number of published articles on exercise and sarcopenia. The countries with the highest number of publications were the United States, Japan, and England; research institutions were mainly composed of universities in Europe and the United States, and high-producing authors formed major collaborative teams, but cross-geographical and cross-institutional collaboration was not apparent; research was closely focused on 3 aspects: resistance exercise, resistance combined with other forms of exercise, and exercise combined with nutritional supplementation, of which resistance exercise was a particular focus; and recently, the research hotspots were mainly the effects of exercise on grip strength. The most cited articles were consensus guidelines published by the working group on sarcopenia in the elderly from different continents. The prevention and rehabilitation of sarcopenia in the elderly are gaining attention. Current primary exercise therapies for sarcopenia and exercise combined with nutritional supplementation have significant advantages and the potential to delay muscle decay. This suggests a promising area for future research that could benefit from further advances.
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Affiliation(s)
- Wanli Zang
- Postgraduate School, University of Harbin Sport, Harbin, China
| | - Haohao Chen
- Postgraduate School, University of Harbin Sport, Harbin, China
| | - Jin Yan
- Centre for Active Living and Learning, University of Newcastle, Callaghan, NSW, Australia
- College of Human and Social Futures, University of Newcastle, Callaghan, NSW, Australia
| | - Dong Li
- Department of International Culture Education, Chodang University, Jeollanam-do, Republic of Korea
| | - Ningkun Xiao
- Department of Psychology, Ural Federal University, Yekaterinburg, Russia
| | - Xiaoqin Zheng
- Postgraduate School, University of Harbin Sport, Harbin, China
| | - Zezhong Zhang
- Postgraduate School, University of Harbin Sport, Harbin, China
- Department of Sports, Harbin University, Harbin, China
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31
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Behringer EJ. Impact of aging on vascular ion channels: perspectives and knowledge gaps across major organ systems. Am J Physiol Heart Circ Physiol 2023; 325:H1012-H1038. [PMID: 37624095 PMCID: PMC10908410 DOI: 10.1152/ajpheart.00288.2023] [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: 05/16/2023] [Revised: 08/21/2023] [Accepted: 08/21/2023] [Indexed: 08/26/2023]
Abstract
Individuals aged ≥65 yr will comprise ∼20% of the global population by 2030. Cardiovascular disease remains the leading cause of death in the world with age-related endothelial "dysfunction" as a key risk factor. As an organ in and of itself, vascular endothelium courses throughout the mammalian body to coordinate blood flow to all other organs and tissues (e.g., brain, heart, lung, skeletal muscle, gut, kidney, skin) in accord with metabolic demand. In turn, emerging evidence demonstrates that vascular aging and its comorbidities (e.g., neurodegeneration, diabetes, hypertension, kidney disease, heart failure, and cancer) are "channelopathies" in large part. With an emphasis on distinct functional traits and common arrangements across major organs systems, the present literature review encompasses regulation of vascular ion channels that underlie blood flow control throughout the body. The regulation of myoendothelial coupling and local versus conducted signaling are discussed with new perspectives for aging and the development of chronic diseases. Although equipped with an awareness of knowledge gaps in the vascular aging field, a section has been included to encompass general feasibility, role of biological sex, and additional conceptual and experimental considerations (e.g., cell regression and proliferation, gene profile analyses). The ultimate goal is for the reader to see and understand major points of deterioration in vascular function while gaining the ability to think of potential mechanistic and therapeutic strategies to sustain organ perfusion and whole body health with aging.
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Affiliation(s)
- Erik J Behringer
- Basic Sciences, Loma Linda University, Loma Linda, California, United States
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32
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Savonitto S, Morici N, Farina A. Exercise Training Effective for Refractory Angina, Likely for Multiple Combined Mechanisms. Am J Cardiol 2023; 205:502-503. [PMID: 37661557 DOI: 10.1016/j.amjcard.2023.08.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 08/08/2023] [Indexed: 09/05/2023]
Affiliation(s)
| | - Nuccia Morici
- IRCCS S. Maria Nascente, Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
| | - Andrea Farina
- Division of Cardiology, Manzoni Hospital, Lecco, Italy
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Mazimba S, Jeukeng C, Ondigi O, Mwansa H, Johnson AE, Elumogo C, Breathett K, Kwon Y, Mubanga M, Mwansa V, Baldeo C, Ibrahim S, Selinski C, Mehta N, Bilchick K. Coronary perfusion pressure is associated with adverse outcomes in advanced heart failure. Perfusion 2023; 38:1492-1500. [PMID: 35947883 DOI: 10.1177/02676591221118693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Myocardial perfusion is an important determinant of cardiac function. We hypothesized that low coronary perfusion pressure (CPP) would be associated with adverse outcomes in heart failure. Myocardial perfusion impacts the contractile efficiency thus a low CPP would signal low myocardial perfusion in the face of increased cardiac demand as a result of volume overload. METHODS We analyzed patients with complete hemodynamic data in the Evaluation Study of Congestive Heart Failure and Pulmonary Artery Catheterization Effectiveness trial using Cox Proportional Hazards regression for the primary outcome of the composite risk of death, heart transplantation, or left ventricular assist device [(LVAD). DT × LVAD] and the secondary outcome of the composite risk of DT × LVAD and heart failure hospitalization (DT × LVADHF). CPP was calculated as the difference between diastolic blood pressure and pulmonary artery wedge pressure. Heart failure categories (ischemic vs non-ischemic) were also stratified based on CPP strata. RESULTS The 158 patients (56.7 ± 13.6 years, 28.5% female) studied had a median CPP of 40 mmHg (IQR 35-52 mmHg). During 6 months of follow-up, 35 (22.2%) had the composite primary outcome and 109 (69.0%) had the composite secondary outcome. When these outcomes were then stratified based on the median, CPP was associated with these outcomes. Increasing CPP was associated with lower risk of both the primary outcome of DT × LVAD (HR 0.96, 95% CI 0.94-0.99 p = .002) and as well as the secondary outcome of DT × LVADHF (p = .0008) There was significant interaction between CPP and ischemic etiology (p = .04). CONCLUSION A low coronary artery perfusion pressure below (median) 40mmHg in patients with advanced heart failure undergoing invasive hemodynamic monitoring with a pulmonary artery catheter was associated with adverse outcomes. CPP could useful in guiding risk stratification of advanced heart failure patients and timely evaluation of advanced heart failure therapies.
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Affiliation(s)
- Sula Mazimba
- University of Virginia Health System, Charlottesville, VA, USA
| | | | - Olivia Ondigi
- University of Virginia Health System, Charlottesville, VA, USA
| | | | | | - Comfort Elumogo
- University of Virginia Health System, Charlottesville, VA, USA
| | | | | | | | | | - Cherisse Baldeo
- University of Virginia Health System, Charlottesville, VA, USA
| | - Sami Ibrahim
- University of Virginia Health System, Charlottesville, VA, USA
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Cherry SR, Diekmann J, Bengel FM. Total-Body Positron Emission Tomography: Adding New Perspectives to Cardiovascular Research. JACC Cardiovasc Imaging 2023; 16:1335-1347. [PMID: 37676207 DOI: 10.1016/j.jcmg.2023.06.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 09/08/2023]
Abstract
The recent advent of positron emission tomography (PET) scanners that can image the entire human body opens up intriguing possibilities for cardiovascular research and future clinical applications. These new systems permit radiotracer kinetics to be measured in all organs simultaneously. They are particularly well suited to study cardiovascular disease and its effects on the entire body. They could also play a role in quantitatively measuring physiologic, metabolic, and immunologic responses in healthy individuals to a variety of stressors and lifestyle interventions, and may ultimately be instrumental for evaluating novel therapeutic agents and their molecular effects across different tissues. In this review, we summarize recent progress in PET technology and methodology, discuss several emerging cardiovascular applications for total-body PET, and place this in the context of multiorgan and systems medicine. Finally, we discuss opportunities that will be enabled by the technology, while also pointing to some of the challenges that still need to be addressed.
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Affiliation(s)
- Simon R Cherry
- Departments of Biomedical Engineering and Radiology, University of California, Davis, California, USA.
| | - Johanna Diekmann
- Departments of Biomedical Engineering and Radiology, University of California, Davis, California, USA; Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | - Frank M Bengel
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
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Ahmadi MN, Hamer M, Gill JMR, Murphy M, Sanders JP, Doherty A, Stamatakis E. Brief bouts of device-measured intermittent lifestyle physical activity and its association with major adverse cardiovascular events and mortality in people who do not exercise: a prospective cohort study. Lancet Public Health 2023; 8:e800-e810. [PMID: 37777289 DOI: 10.1016/s2468-2667(23)00183-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 08/04/2023] [Accepted: 08/07/2023] [Indexed: 10/02/2023]
Abstract
BACKGROUND Guidelines emphasise the health benefits of bouts of physical activity of any duration. However, the associations of intermittent lifestyle physical activity accumulated through non-exercise with mortality and major adverse cardiovascular events (MACE) remain unclear. We aimed to examine the associations of bouts of moderate-to-vigorous intermittent lifestyle physical activity (MV-ILPA) and the proportion of vigorous activity contributing within these bouts with mortality and MACE. METHODS In this prospective cohort study, we used data from the UK Biobank on adults who do not exercise (ie, those who did not report leisure-time exercise) who had wrist-worn accelerometry data available. Participants were followed up until Nov 30, 2022, with the outcome of interest of all-cause mortality obtained through linkage with NHS Digital of England and Wales, and the NHS Central Register and National Records of Scotland, and MACE obtained from inpatient hospitalisation data provided by the Hospital Episode Statistics for England, the Patient Episode Database for Wales, and the Scottish Morbidity Record for Scotland. MV-ILPA bouts were derived using a two-level Random Forest classifier and grouped as short (<1 min), medium (1 to <3 min; 3 to <5 min), and long (5 to <10 min). We further examined the dose-response relationship of the proportion of vigorous physical activity contributing to the MV-ILPA bout. FINDINGS Between June 1, 2013, and Dec 23, 2015, 103 684 Biobank participants wore an accelerometer on their wrist. 25 241 adults (mean age 61·8 years [SD 7·6]), of whom 14 178 (56·2%) were women, were included in our analysis of all-cause mortality. During a mean follow-up duration of 7·9 years (SD 0·9), 824 MACE and 1111 deaths occurred. Compared with bouts of less than 1 min, mortality risk was lower for bouts of 1 min to less than 3 min (hazard ratio [HR] 0·66 [0·53-0·81]), 3 min to less than 5 min (HR 0·56 [0·46-0·69]), and 5 to less than 10 min (HR 0·48 [0·39-0·59]). Similarly, compared with bouts of less than 1 min, risk of MACE was lower for bouts of 1 min to less than 3 min (HR 0·71 [0·54-0·93]), 3 min to less than 5 min (0·62 [0·48-0·81]), and 5 min to less than 10 min (0·59 [0·46-0·76]). Short bouts (<1 min) were associated with lower MACE risk only when bouts were comprised of at least 15% vigorous activity. INTERPRETATION Intermittent non-exercise physical activity was associated with lower mortality and MACE. Our results support the promotion of short intermittent bouts of non-exercise physical activity of moderate-to-vigorous intensity to improve longevity and cardiovascular health among adults who do not habitually exercise in their leisure time. FUNDING Australian National Health, Medical Research Council, and Wellcome Trust.
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Affiliation(s)
- Matthew N Ahmadi
- Mackenzie Wearables Research Hub, Charles Perkins Centre and School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia.
| | - Mark Hamer
- Institute of Sport, Exercise and Health, Division of Surgery and Interventional Science, University College London, London, UK
| | - Jason M R Gill
- School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow, UK
| | - Marie Murphy
- Centre for Exercise Medicine, Physical Activity and Health, Sports and Exercise Sciences Research Institute, Ulster University, Newtownabbey, UK
| | - James P Sanders
- School of Sport, Exercise and Health Sciences, National Centre for Sport and Exercise Medicine, Loughborough University, Loughborough, UK
| | - Aiden Doherty
- Nuffield Department of Population Health, Big Data Institute, University of Oxford, Oxford, UK
| | - Emmanuel Stamatakis
- Mackenzie Wearables Research Hub, Charles Perkins Centre and School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
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Shanks J, Pachen M, Chang JWH, George B, Ramchandra R. Cardiac Vagal Nerve Activity Increases During Exercise to Enhance Coronary Blood Flow. Circ Res 2023; 133:559-571. [PMID: 37641938 DOI: 10.1161/circresaha.123.323017] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/17/2023] [Indexed: 08/31/2023]
Abstract
BACKGROUND The phrase complete vagal withdrawal is often used when discussing autonomic control of the heart during exercise. However, more recent studies have challenged this assumption. We hypothesized that cardiac vagal activity increases during exercise and maintains cardiac function via transmitters other than acetylcholine. METHODS Chronic direct recordings of cardiac vagal nerve activity, cardiac output, coronary artery blood flow, and heart rate were recorded in conscious adult sheep during whole-body treadmill exercise. Cardiac innervation of the left cardiac vagal branch was confirmed with lipophilic tracer dyes (DiO). Sheep were exercised with pharmacological blockers of acetylcholine (atropine, 250 mg), VIP (vasoactive intestinal peptide; [4Cl-D-Phe6,Leu17]VIP 25 µg), or saline control, randomized on different days. In a subset of sheep, the left cardiac vagal branch was denervated. RESULTS Neural innervation from the cardiac vagal branch is seen at major cardiac ganglionic plexi, and within the fat pads associated with the coronary arteries. Directly recorded cardiac vagal nerve activity increased during exercise. Left cardiac vagal branch denervation attenuated the maximum changes in coronary artery blood flow (maximum exercise, control: 63.5±5.9 mL/min, n=8; cardiac vagal denervated: 32.7±5.6 mL/min, n=6, P=2.5×10-7), cardiac output, and heart rate during exercise. Atropine did not affect any cardiac parameters during exercise, but VIP antagonism significantly reduced coronary artery blood flow during exercise to a similar level to vagal denervation. CONCLUSIONS Our study demonstrates that cardiac vagal nerve activity actually increases and is crucial for maintaining cardiac function during exercise. Furthermore, our findings show the dynamic modulation of coronary artery blood flow during exercise is mediated by VIP.
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Affiliation(s)
- Julia Shanks
- Manaaki Manawa - The Centre for Heart Research, Department of Physiology, University of Auckland, Grafton, New Zealand
| | - Mridula Pachen
- Manaaki Manawa - The Centre for Heart Research, Department of Physiology, University of Auckland, Grafton, New Zealand
| | - Joshua W-H Chang
- Manaaki Manawa - The Centre for Heart Research, Department of Physiology, University of Auckland, Grafton, New Zealand
| | - Bindu George
- Manaaki Manawa - The Centre for Heart Research, Department of Physiology, University of Auckland, Grafton, New Zealand
| | - Rohit Ramchandra
- Manaaki Manawa - The Centre for Heart Research, Department of Physiology, University of Auckland, Grafton, New Zealand
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Munneke AG, Lumens J, Arts T, Prinzen FW, Delhaas T. Myocardial perfusion and flow reserve in the asynchronous heart: mechanistic insight from a computational model. J Appl Physiol (1985) 2023; 135:489-499. [PMID: 37439238 PMCID: PMC10538979 DOI: 10.1152/japplphysiol.00181.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/08/2023] [Accepted: 06/27/2023] [Indexed: 07/14/2023] Open
Abstract
The tight coupling between myocardial oxygen demand and supply has been recognized for decades, but it remains controversial whether this coupling persists under asynchronous activation, such as during left bundle branch block (LBBB). Furthermore, it is unclear whether the amount of local cardiac wall growth, following longer-lasting asynchronous activation, can explain differences in myocardial perfusion distribution between subjects. For a better understanding of these matters, we built upon our existing modeling framework for cardiac mechanics-to-perfusion coupling by incorporating coronary autoregulation. Regional coronary flow was regulated with a vasodilator signal based on regional demand, as estimated from regional fiber stress-strain area. Volume of left ventricular wall segments was adapted with chronic asynchronous activation toward a homogeneous distribution of myocardial oxygen demand per tissue weight. Modeling results show that 1) both myocardial oxygen demand and supply are decreased in early activated regions and increased in late-activated regions; 2) but that regional hyperemic flow remains unaffected; while 3) regional myocardial flow reserve (the ratio of hyperemic to resting myocardial flow) decreases with increases in absolute regional myocardial oxygen demand as well as with decreases in wall thickness. These findings suggest that septal hypoperfusion in LBBB represents an autoregulatory response to reduced myocardial oxygen demand. Furthermore, oxygen demand-driven remodeling of wall mass can explain asymmetric hypertrophy and the related homogenization of myocardial perfusion and flow reserve. Finally, the inconsistent observations of myocardial perfusion distribution can primarily be explained by the degree of dyssynchrony, the degree of asymmetric hypertrophy, and the imaging modality used.NEW & NOTEWORTHY This versatile modeling framework couples myocardial oxygen demand to oxygen supply and myocardial growth, enabling simulation of resting and hyperemic myocardial flow during acute and chronic asynchronous ventricular activation. Model-based findings suggest that reported inconsistencies in myocardial perfusion and flow reserve responses with asynchronous ventricular activation between patients can primarily be explained by the degree of dyssynchrony and wall mass remodeling, which together determine the heterogeneity in regional oxygen demand and, hence, supply with autoregulation.
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Affiliation(s)
- Anneloes G Munneke
- Department of Biomedical Engineering, CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
| | - Joost Lumens
- Department of Biomedical Engineering, CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
| | - Theo Arts
- Department of Biomedical Engineering, CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
| | - Frits W Prinzen
- Department of Physiology, CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
| | - Tammo Delhaas
- Department of Biomedical Engineering, CARIM School for Cardiovascular Diseases, Maastricht University, Maastricht, The Netherlands
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Gurgoglione FL, Rizzello D, Giacalone R, Ferretti M, Vezzani A, Pfleiderer B, Pelà G, De Panfilis C, Cattabiani MA, Benatti G, Tadonio I, Grassi F, Magnani G, Noni M, Cancellara M, Nicolini F, Ardissino D, Vignali L, Niccoli G, Solinas E. Precipitating factors in patients with spontaneous coronary artery dissection: Clinical, laboratoristic and prognostic implications. Int J Cardiol 2023; 385:1-7. [PMID: 37211051 DOI: 10.1016/j.ijcard.2023.05.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/26/2023] [Accepted: 05/14/2023] [Indexed: 05/23/2023]
Abstract
BACKGROUND Spontaneous coronary artery dissection (SCAD) often presents with acute coronary syndrome and underlying pathophysiology involves the interplay between predisposing factors and precipitating stressors, such as emotional and physical triggers. In our study we sought to compare clinical, angiographic and prognostic features in a cohort of patients with SCAD according to the presence and type of precipitating stressors. METHODS Consecutive patients with angiographic evidence of SCAD were divided into three groups: patients with emotional stressors, patients with physical stressors and those without any stressor. Clinical, laboratoristic and angiographic features were collected for each patient. The incidence of major adverse cardiovascular events, recurrent SCAD and recurrent angina was assessed at follow-up. RESULTS Among the total population (64 subjects), 41 [64.0%] patients presented with precipitating stressors, including emotional triggers (31 [48.4%] subjects) and physical efforts (10 [15.6%] subjects). As compared with the other groups, patients with emotional triggers were more frequently female (p = 0.009), had a lower prevalence of hypertension (p = 0.039] and dyslipidemia (p = 0.039), were more likely to suffer from chronic stress (p = 0.022) and presented with higher levels of C-reactive protein (p = 0.037) and circulating eosinophils cells (p = 0.012). At a median follow-up of 21 [7; 44] months, patients with emotional stressors experienced higher prevalence of recurrent angina (p = 0.025), as compared to the other groups. CONCLUSIONS Our study shows that emotional stressors leading to SCAD may identify a SCAD subtype with specific features and a trend towards a worse clinical outcome.
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Affiliation(s)
| | - Davide Rizzello
- Division of Cardiology, University of Parma, Parma University Hospital, Parma, Italy
| | | | - Marco Ferretti
- Division of Cardiology, IRCCS Arcispedale Santa Maria Nuova, Reggio Emilia, Italy
| | - Antonella Vezzani
- Cardiac Surgery Intensive Care Unit, Parma University Hospital, Parma, Italy
| | | | - Giovanna Pelà
- Department of Medicine and Surgery, University of Parma, Italy
| | | | | | - Giorgio Benatti
- Division of Cardiology, Parma University Hospital, Parma, Italy
| | - Iacopo Tadonio
- Division of Cardiology, Parma University Hospital, Parma, Italy
| | | | - Giulia Magnani
- Division of Cardiology, Parma University Hospital, Parma, Italy
| | - Manjola Noni
- Division of Cardiology, Parma University Hospital, Parma, Italy
| | | | - Francesco Nicolini
- Division of Cardio surgery, University of Parma, Parma University Hospital, Parma, Italy
| | - Diego Ardissino
- Division of Cardiology, University of Parma, Parma University Hospital, Parma, Italy
| | - Luigi Vignali
- Division of Cardiology, Parma University Hospital, Parma, Italy
| | - Giampaolo Niccoli
- Division of Cardiology, University of Parma, Parma University Hospital, Parma, Italy.
| | - Emilia Solinas
- Division of Cardiology, Parma University Hospital, Parma, Italy
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Noble RMN, Holody CD, Woodman AG, Nie C, Liu SN, Young D, Wiedemeyer A, Soni S, Dyck JRB, Graf D, Eckersley LG, Dufour A, Bourque SL. Perinatal iron restriction is associated with changes in neonatal cardiac function and structure in a sex-dependent manner. Clin Sci (Lond) 2023; 137:1115-1130. [PMID: 37463130 DOI: 10.1042/cs20230594] [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: 06/05/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/20/2023]
Abstract
Iron deficiency (ID) is common during gestation and in early infancy and can alter developmental trajectories with lasting consequences on cardiovascular health. While the effects of ID and anemia on the mature heart are well documented, comparatively little is known about their effects and mechanisms on offspring cardiac development and function in the neonatal period. Female Sprague-Dawley rats were fed an iron-restricted or iron-replete diet before and during pregnancy. Cardiac function was assessed in a cohort of offspring on postnatal days (PD) 4, 14, and 28 by echocardiography; a separate cohort was euthanized for tissue collection and hearts underwent quantitative shotgun proteomic analysis. ID reduced body weight and increased relative heart weights at all time points assessed, despite recovering from anemia by PD28. Echocardiographic studies revealed unique functional impairments in ID male and female offspring, characterized by greater systolic dysfunction in the former and greater diastolic dysfunction in the latter. Proteomic analysis revealed down-regulation of structural components by ID, as well as enriched cellular responses to stress; in general, these effects were more pronounced in males. ID causes functional changes in the neonatal heart, which may reflect an inadequate or maladaptive compensation to anemia. This identifies systolic and diastolic dysfunction as comorbidities to perinatal ID anemia which may have important implications for both the short- and long-term cardiac health of newborn babies. Furthermore, therapies which improve cardiac output may mitigate the effects of ID on organ development.
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Affiliation(s)
- Ronan M N Noble
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada
| | - Claudia D Holody
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada
| | - Andrew G Woodman
- Department of Anesthesiology, University of Alberta, Edmonton, Canada
| | - Chunpeng Nie
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada
| | - Si Ning Liu
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada
| | - Daniel Young
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Canada
| | - Alyssa Wiedemeyer
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada
| | - Shubham Soni
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada
| | - Jason R B Dyck
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada
| | - Daniel Graf
- School of Dentistry, University of Alberta, Edmonton, Canada
| | - Luke G Eckersley
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada
| | - Antoine Dufour
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Canada
| | - Stephane L Bourque
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Women and Children's Health Research Institute, University of Alberta, Edmonton, Canada
- Department of Anesthesiology, University of Alberta, Edmonton, Canada
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Achim A, Johnson NP, Liblik K, Burckhardt A, Krivoshei L, Leibundgut G. Coronary steal: how many thieves are out there? Eur Heart J 2023; 44:2805-2814. [PMID: 37264699 DOI: 10.1093/eurheartj/ehad327] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 04/17/2023] [Accepted: 05/12/2023] [Indexed: 06/03/2023] Open
Abstract
The colorful term "coronary steal" arose in 1967 to parallel "subclavian steal" coined in an anonymous 1961 editorial. In both instances, the word "steal" described flow reversal in the setting of an interconnected but abnormal vascular network-in one case a left subclavian stenosis proximal to the origin of the vertebral artery and in the other case a coronary fistula. Over time, the term has morphed to include a larger set of pathophysiology without explicit flow reversal but rather with a decrease in stress flow due to other mechanisms. This review aims to shed light on this phenomenon from a clinical and a pathophysiological perspective, detailing the anatomical and physiological conditions that allow so-called steal to appear and offering treatment options for six distinct scenarios.
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Affiliation(s)
- Alexandru Achim
- Department of Cardiology, Medizinische Universitätsklinik, Kantonsspital Baselland, Rheinstrasse 26, 4410 Liestal, Switzerland
- Cardiology Department, Heart Institute "Niculae Stancioiu", University of Medicine and Pharmacy "Iuliu Hatieganu", Motilor 19-21, 400001, Cluj-Napoca, Romania
| | - Nils P Johnson
- Division of Cardiology, Department of Medicine, Weatherhead PET Center, McGovern Medical School at UTHealth and Memorial Hermann Hospital, Houston, TX, USA
| | - Kiera Liblik
- Department of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Amélie Burckhardt
- Department of Cardiology, Medizinische Universitätsklinik, Kantonsspital Baselland, Rheinstrasse 26, 4410 Liestal, Switzerland
| | - Lian Krivoshei
- Department of Cardiology, Medizinische Universitätsklinik, Kantonsspital Baselland, Rheinstrasse 26, 4410 Liestal, Switzerland
| | - Gregor Leibundgut
- Department of Cardiology, Medizinische Universitätsklinik, Kantonsspital Baselland, Rheinstrasse 26, 4410 Liestal, Switzerland
- Department of Cardiology, University Hospital Basel, Basel, Switzerland
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Al-Mohaissen MA. Echocardiographic assessment of primary microvascular angina and primary coronary microvascular dysfunction. Trends Cardiovasc Med 2023; 33:369-383. [PMID: 35192927 DOI: 10.1016/j.tcm.2022.02.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/13/2022] [Accepted: 02/14/2022] [Indexed: 01/16/2023]
Abstract
There is an increasing interest in the role of echocardiography in the evaluation of primary microvascular angina, which is attributed to primary coronary microvascular dysfunction. Valid echocardiographic techniques are expected to facilitate the diagnosis and follow-up of these patients and would be valuable for research purposes and therapy evaluation. However, adequate echocardiographic data are lacking, and the interpretation of the limited available literature is hindered by the previous addition of microvascular angina under more inclusive entities, such as cardiac syndrome X. In experienced hands, the assessment of primary coronary microvascular dysfunction in patients with suspected primary microvascular angina, using multiple echocardiographic techniques is feasible, relatively inexpensive, and safe. Exclusion of obstructive epicardial coronary artery disease is, however, a prerequisite for diagnosis. Two-dimensional transthoracic echocardiography, routine stress echocardiography, and speckle-tracking echocardiography indirectly assess primary coronary microvascular dysfunction by evaluating potential impairment in myocardial function and lack diagnostic sensitivity and specificity. Conversely, certain echocardiographic techniques, including Doppler-derived coronary flow velocity reserve and myocardial contrast echocardiography, assess some coronary microvascular dysfunction parameters and have exhibited diagnostic and prognostic potentials. Doppler-derived coronary flow velocity reserve is the best studied and only guideline-approved echocardiographic technique for documenting coronary microvascular dysfunction in patients with suspected microvascular angina. Myocardial contrast echocardiography, by comparison, can detect heterogeneous and patchy myocardial involvement by coronary microvascular dysfunction, which is an advantage over the common practice of coronary flow velocity reserve assessment in a single vessel (commonly the left anterior descending artery) which only reflects regional microvascular function. However, there is no consensus regarding the diagnostic criteria, and expertise performing this technique is limited. Echocardiography remains underexplored and inadequately utilized in the setting of microvascular angina and coronary microvascular dysfunction. Appraisal of the current echocardiographic literature regarding coronary microvascular dysfunction and microvascular angina is important to stay current with the progress in its clinical recognition and create a basis for future research and technological advancements.
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Affiliation(s)
- Maha A Al-Mohaissen
- Department of Clinical Sciences (Cardiology), College of Medicine, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia.
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Abstract
Cardiogenic shock is characterized by tissue hypoxia caused by circulatory failure arising from inadequate cardiac output. In addition to treating the pathologic process causing impaired cardiac function, prompt hemodynamic support is essential to reduce the risk of developing multiorgan dysfunction and to preserve cellular metabolism. Pharmacologic therapy with the use of vasopressors and inotropes is a key component of this treatment strategy, improving perfusion by increasing cardiac output, altering systemic vascular resistance, or both, while allowing time and hemodynamic stability to treat the underlying disease process implicated in the development of cardiogenic shock. Despite the use of mechanical circulatory support recently garnering significant interest, pharmacologic hemodynamic support remains a cornerstone of cardiogenic shock management, with over 90% of patients receiving at least 1 vasoactive agent. This review aims to describe the pharmacology and hemodynamic effects of current pharmacotherapies and provide a practical approach to their use, while highlighting important future research directions.
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Affiliation(s)
- Jason E. Bloom
- Department of CardiologyAlfred HealthMelbourneAustralia
- Baker Heart and Diabetes InstituteMelbourneAustralia
- Department of Epidemiology and Preventive MedicineMonash UniversityMelbourneAustralia
| | - William Chan
- Department of CardiologyAlfred HealthMelbourneAustralia
- Baker Heart and Diabetes InstituteMelbourneAustralia
| | - David M. Kaye
- Department of CardiologyAlfred HealthMelbourneAustralia
- Baker Heart and Diabetes InstituteMelbourneAustralia
| | - Dion Stub
- Department of CardiologyAlfred HealthMelbourneAustralia
- Department of Epidemiology and Preventive MedicineMonash UniversityMelbourneAustralia
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Lother A, Kohl P. The heterocellular heart: identities, interactions, and implications for cardiology. Basic Res Cardiol 2023; 118:30. [PMID: 37495826 PMCID: PMC10371928 DOI: 10.1007/s00395-023-01000-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/17/2023] [Accepted: 07/17/2023] [Indexed: 07/28/2023]
Abstract
The heterocellular nature of the heart has been receiving increasing attention in recent years. In addition to cardiomyocytes as the prototypical cell type of the heart, non-myocytes such as endothelial cells, fibroblasts, or immune cells are coming more into focus. The rise of single-cell sequencing technologies enables identification of ever more subtle differences and has reignited the question of what defines a cell's identity. Here we provide an overview of the major cardiac cell types, describe their roles in homeostasis, and outline recent findings on non-canonical functions that may be of relevance for cardiology. We highlight modes of biochemical and biophysical interactions between different cardiac cell types and discuss the potential implications of the heterocellular nature of the heart for basic research and therapeutic interventions.
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Affiliation(s)
- Achim Lother
- Institute of Experimental and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Freiburg, Albertstr. 25, 79104, Freiburg, Germany.
- Interdisciplinary Medical Intensive Care, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany.
| | - Peter Kohl
- Institute for Experimental Cardiovascular Medicine, Faculty of Medicine, University Heart Center, University of Freiburg, Freiburg, Germany
- CIBSS Centre for Integrative Biological Signalling Studies, University of Freiburg, Freiburg, Germany
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Rafique M, Solberg OG, Gullestad L, Bendz B, Murbræch K, Nytrøen K, Rolid K, Lunde K. Effects of high-intensity interval training on cardiac remodelling, function and coronary microcirculation in de novo heart transplant patients: a substudy of the HITTS randomised controlled trial. BMJ Open Sport Exerc Med 2023; 9:e001331. [PMID: 37440977 PMCID: PMC10335410 DOI: 10.1136/bmjsem-2022-001331] [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] [Subscribe] [Scholar Register] [Accepted: 03/14/2023] [Indexed: 07/15/2023] Open
Abstract
Objectives High-intensity interval training (HIT) improves peak oxygen consumption (VO2peak) in de novo heart transplant (HTx) recipients. It remains unclear whether this improvement early after HTx is solely dependent on peripheral adaptations, or due to a linked chain of central and peripheral adaptations. The objective of this study was to determine whether HIT results in structural and functional adaptations in the cardiovascular system. Methods Eighty-one de novo HTx recipients were randomly assigned to participate in either 9 months of supervised HIT or standard care exercise-based rehabilitation. Cardiac function was assessed by echocardiogram and the coronary microcirculation with the index of microcirculatory resistance (IMR) at baseline and 12 months after HTx. Results Cardiac function as assessed by global longitudinal strain was significantly better in the HIT group than in the standard care group (16.3±1.2% vs 15.6±2.2%, respectively, treatment effect = -1.1% (95% CI -2.0% to -0.2%), p=0.02), as was the end-diastolic volume (128.5±20.8 mL vs 123.4±15.5 mL, respectively, treatment effect=4.9 mL (95% CI 0.5 to 9.2 mL), p=0.03). There was a non-significant tendency for IMR to indicate improved microcirculatory function (13.8±8.0 vs 16.8±12.0, respectively, treatment effect = -4.3 (95% CI -9.1 to 0.6), p=0.08). Conclusion When initiated early after HTx, HIT leads to both structural and functional cardiovascular adaptations. Trial registration number NCT01796379.
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Affiliation(s)
- Muzammil Rafique
- Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Ole Geir Solberg
- Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Lars Gullestad
- Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- KG Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway and Center for Heart Failure Research, Oslo University Hospital, Oslo, Norway
| | - Bjørn Bendz
- Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Klaus Murbræch
- Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Kari Nytrøen
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Katrine Rolid
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Ketil Lunde
- Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
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Gronda E, Palazzuoli A, Iacoviello M, Benevenuto M, Gabrielli D, Arduini A. Renal Oxygen Demand and Nephron Function: Is Glucose a Friend or Foe? Int J Mol Sci 2023; 24:9957. [PMID: 37373108 DOI: 10.3390/ijms24129957] [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: 04/26/2023] [Revised: 06/02/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
The kidneys and heart work together to balance the body's circulation, and although their physiology is based on strict inter dependence, their performance fulfills different aims. While the heart can rapidly increase its own oxygen consumption to comply with the wide changes in metabolic demand linked to body function, the kidneys physiology are primarily designed to maintain a stable metabolic rate and have a limited capacity to cope with any steep increase in renal metabolism. In the kidneys, glomerular population filters a large amount of blood and the tubular system has been programmed to reabsorb 99% of filtrate by reabsorbing sodium together with other filtered substances, including all glucose molecules. Glucose reabsorption involves the sodium-glucose cotransporters SGLT2 and SGLT1 on the apical membrane in the proximal tubular section; it also enhances bicarbonate formation so as to preserve the acid-base balance. The complex work of reabsorption in the kidney is the main factor in renal oxygen consumption; analysis of the renal glucose transport in disease states provides a better understanding of the renal physiology changes that occur when clinical conditions alter the neurohormonal response leading to an increase in glomerular filtration pressure. In this circumstance, glomerular hyperfiltration occurs, imposing a higher metabolic demand on kidney physiology and causing progressive renal impairment. Albumin urination is the warning signal of renal engagement over exertion and most frequently heralds heart failure development, regardless of disease etiology. The review analyzes the mechanisms linked to renal oxygen consumption, focusing on sodium-glucose management.
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Affiliation(s)
- Edoardo Gronda
- Medicine and Medicine Sub-Specialties Department, Cardio Renal Program, U.O.C. Nephrology, Dialysis and Adult Renal Transplant Program, IRCCS Ca' Granda Foundation, Ospedale Maggiore Policlinico, 20122 Milano, Italy
| | - Alberto Palazzuoli
- Cardiovascular Diseases Unit, Cardio Thoracic and Vascular Department, S. Maria alle Scotte Hospital University of Siena, 53100 Siena, Italy
| | - Massimo Iacoviello
- Department of Medical and Surgical Sciences, University of Foggia, 71100 Foggia, Italy
| | - Manuela Benevenuto
- Unità Operativa Complessa Cardiologia-UTIC-Emodinamica, PO Giuseppe Mazzini, 64100 Teramo, Italy
| | - Domenico Gabrielli
- Unità Operativa Complessa Cardiologia-UTIC, Azienda Ospedaliera San Camillo Forlanini, 00152 Rome, Italy
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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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Hu Y, Gu Z, Xu M, He W, Wu L, Xu Z, Guo L. Body mass index and clinical outcomes in patients with heart failure with preserved ejection fraction mediated by diastolic blood pressure status? Heliyon 2023; 9:e16515. [PMID: 37274719 PMCID: PMC10238725 DOI: 10.1016/j.heliyon.2023.e16515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 06/06/2023] Open
Abstract
Background The "obesity paradox" has been elucidated in patients with heart failure (HF). Current guidelines introduce a target diastolic blood pressure (DBP) < 80 mmHg but >70 mmHg in HF patients. Due to reduced coronary perfusion, low DBP has a deleterious impact on cardiovascular outcomes. This present study aimed to assess the relationship between BMI and adjudicated clinical outcomes in HFpEF patients according to the status of DBP. Methods We analyzed the data in 1749 HFpEF patients from the Americas of the TOPCAT (Treatment of Preserved Cardiac Function Heart Failure with an Aldosterone Antagonist) Trial. The population was stratified by DBP (<70 mmHg, and ≥70 mmHg) and BMI strata (normal weight, overweight, and obesity). Cox proportional hazards models and competing-risks regression analysis were performed. Results At baseline, the median BMI and DBP were 32.9 kg/m2 (interquartile range 28.0-38.5 kg/m2) and 70 mmHg (interquartile range 62-80 mmHg), respectively. In the multivariable analysis, obesity was associated with better survival rates in the total HFpEF population (all-cause death: HR = 0.439, 95% CI 0.256-0.750; and cardiovascular death: HR = 0.378, 95% CI 0.182-0.787). In patients with DBP<70 mmHg, obesity was not significantly associated with reduced risks for all-cause death (HR = 0.531, 95% CI: 0.263-1.704) and cardiovascular death (HR = 0.680, 95% CI: 0.254-1.819). However, multivariate analyses for cardiovascular death (HR = 0.339, 95% CI: 0.117-0.983) and all-cause death (HR = 0.389, 95% CI: 0.156-0.969) were significant in patients with DBP≥70 mmHg. Nevertheless, there were no interactions between DBP and BMI. Conclusions The obesity paradox was observed in patients with HFpEF, regardless of DBP strata (<70 mmHg, and ≥70 mmHg).
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Affiliation(s)
- YingQiu Hu
- Emergency Department of the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - ZhenBang Gu
- Medical School of Nanchang University, Nanchang, Jiangxi, China
| | - MeiLing Xu
- Urology Department of the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - WenFeng He
- Department of Medical Genetics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - LiDong Wu
- Emergency Department of the Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - ZhiCheng Xu
- Department of Cardiology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, Jiangxi, China
| | - LinJuan Guo
- Department of Cardiology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, Jiangxi, China
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Azimaraghi O, Bilal M, Amornyotin S, Arain M, Behrends M, Berzin TM, Buxbaum JL, Choice C, Fassbender P, Sawhney MS, Sundar E, Wongtangman K, Leslie K, Eikermann M. Consensus guidelines for the perioperative management of patients undergoing endoscopic retrograde cholangiopancreatography. Br J Anaesth 2023; 130:763-772. [PMID: 37062671 DOI: 10.1016/j.bja.2023.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 02/26/2023] [Accepted: 03/08/2023] [Indexed: 04/18/2023] Open
Abstract
Deep sedation without tracheal intubation (monitored anaesthesia care) and general anaesthesia with tracheal intubation are commonly used anaesthesia techniques for endoscopic retrograde cholangiopancreatography (ERCP). There are distinct pathophysiological differences between monitored anaesthesia care and general anaesthesia that need to be considered depending on the nature and severity of the patient's underlying disease, comorbidities, and procedural risks. An international group of expert anaesthesiologists and gastroenterologists created clinically relevant questions regarding the merits and risks of monitored anaesthesia care vs general anaesthesia in specific clinical scenarios for planning optimal anaesthetic approaches for ERCP. Using a modified Delphi approach, the group created practical recommendations for anaesthesiologists, with the aim of reducing the incidence of perioperative adverse outcomes while maximising healthcare resource utilisation. In the majority of clinical scenarios analysed, our expert recommendations favour monitored anaesthesia care over general anaesthesia. Patients with increased risk of pulmonary aspiration and those undergoing prolonged procedures of high complexity were thought to benefit from general anaesthesia with tracheal intubation. Patient age and ASA physical status were not considered to be factors for choosing between monitored anaesthesia care and general anaesthesia. Monitored anaesthesia care is the favoured anaesthesia plan for ERCP. An individual risk-benefit analysis that takes into account provider and institutional experience, patient comorbidities, and procedural risks is also needed.
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Affiliation(s)
- Omid Azimaraghi
- Department of Anesthesiology, Montefiore Medical Center, Albert Einstein College of Medicine, New York, NY, USA
| | - Mohammad Bilal
- Division of Gastroenterology & Hepatology, Minneapolis VA Medical Center, University of Minnesota, Minneapolis, MN, USA
| | - Somchai Amornyotin
- Department of Anesthesiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Mustafa Arain
- Center for Interventional Endoscopy, AdventHealth, Orlando, FL, USA
| | - Matthias Behrends
- Department of Anesthesia and Perioperative Care, University of California, San Francisco, CA, USA
| | - Tyler M Berzin
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - James L Buxbaum
- Department of Internal Medicine, University of Southern California, Keck School of Medicine, Los Angeles, CA, USA
| | - Curtis Choice
- Department of Anesthesiology, Montefiore Medical Center, Albert Einstein College of Medicine, New York, NY, USA
| | - Philipp Fassbender
- Department of Anesthesiology, Montefiore Medical Center, Albert Einstein College of Medicine, New York, NY, USA; Klinik für Anästhesiologie, Operative Intensivmedizin, Schmerz- und Palliativmedizin, Marien Hospital Herne, Universitätsklinikum der Ruhr-Universität Bochum, Herne, Germany
| | - Mandeep S Sawhney
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Eswar Sundar
- Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Karuna Wongtangman
- Department of Anesthesiology, Montefiore Medical Center, Albert Einstein College of Medicine, New York, NY, USA; Department of Anesthesiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kate Leslie
- Monash University, Melbourne, VIC, Australia; Royal Melbourne Hospital and University of Melbourne, Melbourne, VIC, Australia
| | - Matthias Eikermann
- Department of Anesthesiology, Montefiore Medical Center, Albert Einstein College of Medicine, New York, NY, USA; Klinik für Anästhesiologie und Intensivmedizin, Universität Duisburg-Essen, Essen, Germany.
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Małota Z, Sadowski W, Pieszko K, Zimoląg R, Czekała F, Malinowska R, Hiczkiewicz J. The Comparative Method Based on Coronary Computed Tomography Angiography for Assessing the Hemodynamic Significance of Coronary Artery Stenosis. Cardiovasc Eng Technol 2023; 14:364-379. [PMID: 36869267 PMCID: PMC10412489 DOI: 10.1007/s13239-023-00658-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 02/06/2023] [Indexed: 03/05/2023]
Abstract
PURPOSE An important aspect in the prevention and treatment of coronary artery disease is the functional evaluation of narrowed blood vessels. Medical image-based Computational Fluid Dynamic methods are currently increasingly being used in the clinical setting for flow studies of cardio vascular system. The aim of our study was to confirm the feasibility and functionality of a non-invasive computational method providing information about hemodynamic significance of coronary stenosis. METHODS A comparative method was used to simulate the flow energy losses in real (stenotic) and reconstructed models without (reference) stenosis of the coronary arteries under stress test conditions, i.e. for maximum blood flow and minimal, constant vascular resistance. In addition to the absolute pressure drop in the stenotic arteries (FFRsten) and in the reconstructed arteries (FFRrec), a new energy flow reference index (EFR) was also defined, which expresses the total pressure changes caused by stenosis in relation to the pressure changes in normal coronary arteries, which also allows a separate assessment of the haemodynamic significance of the atherosclerotic lesion itself. The article presents the results obtained from flow simulations in coronary arteries, reconstructed on the basis of 3D segmentation of cardiac CT images of 25 patients from retrospective data collection, with different degrees of stenoses and different areas of their occurrence. RESULTS The greater the degree of narrowing of the vessel, the greater drop of flow energy. Each parameter introduces an additional diagnostic value. In contrast to FFRsten, the EFR indices that are calculated on the basis of a comparison of stenosed and reconstructed models, are associated directly with localization, shape and geometry of stenosis only. Both FFRsten and EFR showed very significant positive correlation (P < 0.0001) with coronary CT angiography-derived FFR, with a correlation coefficient of 0.8805 and 0.9011 respectively. CONCLUSION The study presented promising results of non-invasive, comparative test to support of prevention of coronary disease and functional evaluation of stenosed vessels.
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Affiliation(s)
- Zbigniew Małota
- Institute of Heart Prostheses, Professor Zbigniew Religa Foundation of Cardiac Surgery Development, Zabrze, Poland.
| | - Wojciech Sadowski
- Institute of Heart Prostheses, Professor Zbigniew Religa Foundation of Cardiac Surgery Development, Zabrze, Poland
| | - Konrad Pieszko
- Department of Interventional Cardiology and Cardiac Surgery, Collegium Medicum, University of Zielona Góra, Góra, Poland
| | - Rafał Zimoląg
- Clinical Department of Cardiology, Multidisciplinary Hospital, Independent Public Healthcare Center in Nowa Sól, Nowa Sól, Poland
| | - Filip Czekała
- Clinical Department of Cardiology, Multidisciplinary Hospital, Independent Public Healthcare Center in Nowa Sól, Nowa Sól, Poland
| | - Renata Malinowska
- Clinical Department of Cardiology, Multidisciplinary Hospital, Independent Public Healthcare Center in Nowa Sól, Nowa Sól, Poland
| | - Jarosław Hiczkiewicz
- Department of Interventional Cardiology and Cardiac Surgery, Collegium Medicum, University of Zielona Góra, Góra, Poland
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Ligetvári R, Szokodi I, Far G, Csöndör É, Móra Á, Komka Z, Tóth M, Oláh A, Ács P. Apelin as a Potential Regulator of Peak Athletic Performance. Int J Mol Sci 2023; 24:ijms24098195. [PMID: 37175901 PMCID: PMC10179506 DOI: 10.3390/ijms24098195] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 04/24/2023] [Accepted: 04/29/2023] [Indexed: 05/15/2023] Open
Abstract
Apelin, as a cardiokine/myokine, is emerging as an important regulator of cardiac and skeletal muscle homeostasis. Loss of apelin signaling results in premature cardiac aging and sarcopenia. However, the contribution of apelin to peak athletic performance remains largely elusive. In this paper, we assessed the impact of maximal cardiorespiratory exercise testing on the plasma apelin levels of 58 male professional soccer players. Circulating apelin-13 and apelin-36, on average, increased transiently after a single bout of treadmill exercise; however, apelin responses (Δapelin = peak - baseline values) showed a striking interindividual variability. Baseline apelin-13 levels were inversely correlated with those of Δapelin-13 and Δapelin-36. Δapelin-13 showed a positive correlation with the maximal metabolic equivalent, relative maximal O2 consumption, and peak circulatory power, whereas such an association in the case of Δapelin-36 could not be detected. In conclusion, we observed a pronounced individual-to-individual variation in exercise-induced changes in the plasma levels of apelin-13 and apelin-36. Since changes in plasma apelin-13 levels correlated with the indicators of physical performance, whole-body oxygen consumption and pumping capability of the heart, apelin, as a novel exerkine, may be a determinant of peak athletic performance.
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Affiliation(s)
- Roland Ligetvári
- Doctoral School of Health Sciences, University of Pécs, 7621 Pécs, Hungary
- Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary
| | - István Szokodi
- Heart Institute, Medical School, University of Pécs, 7624 Pécs, Hungary
- Szentágothai Research Centre, University of Pécs, 7624 Pécs, Hungary
| | - Gabriella Far
- Doctoral School of Health Sciences, University of Pécs, 7621 Pécs, Hungary
- Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary
| | - Éva Csöndör
- Doctoral School of Health Sciences, University of Pécs, 7621 Pécs, Hungary
- Department of Laboratory Medicine, Semmelweis University, 1085 Budapest, Hungary
| | - Ákos Móra
- Doctoral School of Health Sciences, University of Pécs, 7621 Pécs, Hungary
| | - Zsolt Komka
- Department of Health Sciences and Sport Medicine, Hungarian Sports University, 1123 Budapest, Hungary
- Heart and Vascular Center, Semmelweis University, 1122 Budapest, Hungary
| | - Miklós Tóth
- Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary
- Szentágothai Research Centre, University of Pécs, 7624 Pécs, Hungary
- Department of Laboratory Medicine, Semmelweis University, 1085 Budapest, Hungary
- Department of Health Sciences and Sport Medicine, Hungarian Sports University, 1123 Budapest, Hungary
| | - András Oláh
- Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary
| | - Pongrác Ács
- Faculty of Health Sciences, University of Pécs, 7621 Pécs, Hungary
- Szentágothai Research Centre, University of Pécs, 7624 Pécs, Hungary
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