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Taylor BJ, Snyder EM, Richert ML, Wheatley CM, Chase SC, Olson LJ, Johnson BD. Effect of β 2-adrenergic receptor stimulation on lung fluid in stable heart failure patients. J Heart Lung Transplant 2016; 36:418-426. [PMID: 27863863 DOI: 10.1016/j.healun.2016.09.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 08/05/2016] [Accepted: 09/21/2016] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND The purpose of this study was to determine: (1) whether stable heart failure patients with reduced ejection fraction (HFrEF) have elevated extravascular lung water (EVLW) when compared with healthy control subjects; and (2) the effect of acute β2-adrenergic receptor (β2AR) agonist inhalation on lung fluid balance. METHODS Twenty-two stable HFrEF patients and 18 age- and gender-matched healthy subjects were studied. Lung diffusing capacity for carbon monoxide (DLCO), alveolar-capillary membrane conductance (DmCO), pulmonary capillary blood volume (Vc) (via re-breathe) and lung tissue volume (Vtis) (via computed tomography) were assessed before and within 30 minutes after administration of nebulized albuterol. EVLW was derived as Vtis - Vc. RESULTS Before administration of albuterol, Vtis and EVLW were higher in HFrEF vs control (998 ± 200 vs 884 ± 123 ml, p = 0.041; and 943 ± 202 vs 802 ± 133 ml, p = 0.015, respectively). Albuterol decreased Vtis and EVLW in HFrEF patients (-4.6 ± 7.8%, p = 0.010; -4.6 ± 8.8%, p = 0.018) and control subjects (-2.8 ± 4.9%, p = 0.029; -3.0 ± 5.7%, p = 0.045). There was an inverse relationship between pre-albuterol values and pre- to post-albuterol change for EVLW (r2 = -0.264, p = 0.015) and DmCO (r2 = -0.343, p = 0.004) in HFrEF only. CONCLUSION Lung fluid is elevated in stable HFrEF patients relative to healthy subjects. Stimulation of β2ARs may cause fluid removal in HFrEF, especially in patients with greater evidence of increased lung water at baseline.
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Affiliation(s)
- Bryan J Taylor
- Faculty of Biological Sciences, School of Biomedical Sciences, University of Leeds, Leeds, UK; Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA.
| | - Eric M Snyder
- School of Kinesiology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Maile L Richert
- Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Courtney M Wheatley
- Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Steven C Chase
- Division of Cardiovascular Diseases, Mayo Graduate School, Mayo Clinic, Rochester, Minnesota, USA
| | - Lyle J Olson
- Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Bruce D Johnson
- Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Abnormal heart rate recovery and deficient chronotropic response after submaximal exercise in young Marfan syndrome patients. Cardiol Young 2016; 26:1274-81. [PMID: 26521836 DOI: 10.1017/s1047951115002322] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Marfan syndrome patients present important cardiac structural changes, ventricular dysfunction, and electrocardiographic changes. An abnormal heart rate response during or after exercise is an independent predictor of mortality and autonomic dysfunction. The aim of the present study was to compare heart rate recovery and chronotropic response obtained by cardiac reserve in patients with Marfan syndrome subjected to submaximal exercise. METHODS A total of 12 patients on β-blocker therapy and 13 off β-blocker therapy were compared with 12 healthy controls. They were subjected to submaximal exercise with lactate measurements. The heart rate recovery was obtained in the first minute of recovery and corrected for cardiac reserve and peak lactate concentration. RESULTS Peak heart rate (141±16 versus 155±17 versus 174±8 bpm; p=0.001), heart rate reserve (58.7±9.4 versus 67.6±14.3 versus 82.6±4.8 bpm; p=0.001), heart rate recovery (22±6 versus 22±8 versus 34±9 bpm; p=0.001), and heart rate recovery/lactate (3±1 versus 3±1 versus 5±1 bpm/mmol/L; p=0.003) were different between Marfan groups and controls, respectively. All the patients with Marfan syndrome had heart rate recovery values below the mean observed in the control group. The absolute values of heart rate recovery were strongly correlated with the heart rate reserve (r=0.76; p=0.001). CONCLUSION Marfan syndrome patients have reduced heart rate recovery and chronotropic deficit after submaximal exercise, and the chronotropic deficit is a strong determinant of heart rate recovery. These changes are suggestive of autonomic dysfunction.
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Yost G, Bhat G. Relationship Between Handgrip Strength and Length of Stay for Left Ventricular Assist Device Implantation. Nutr Clin Pract 2016; 32:98-102. [DOI: 10.1177/0884533616665926] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Affiliation(s)
- Gardner Yost
- Advocate Christ Medical Center, Center for Heart Transplant and Assist Devices, Oak Lawn, Illinois, USA
| | - Geetha Bhat
- Advocate Christ Medical Center, Center for Heart Transplant and Assist Devices, Oak Lawn, Illinois, USA
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Dubé BP, Agostoni P, Laveneziana P. Exertional dyspnoea in chronic heart failure: the role of the lung and respiratory mechanical factors. Eur Respir Rev 2016; 25:317-32. [DOI: 10.1183/16000617.0048-2016] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 06/13/2016] [Indexed: 11/05/2022] Open
Abstract
Exertional dyspnoea is among the dominant symptoms in patients with chronic heart failure and progresses relentlessly as the disease advances, leading to reduced ability to function and engage in activities of daily living. Effective management of this disabling symptom awaits a better understanding of its underlying physiology.Cardiovascular factors are believed to play a major role in dyspnoea in heart failure patients. However, despite pharmacological interventions, such as vasodilators or inotropes that improve central haemodynamics, patients with heart failure still complain of exertional dyspnoea. Clearly, dyspnoea is not determined by cardiac factors alone, but likely depends on complex, integrated cardio-pulmonary interactions.A growing body of evidence suggests that excessively increased ventilatory demand and abnormal “restrictive” constraints on tidal volume expansion with development of critical mechanical limitation of ventilation, contribute to exertional dyspnoea in heart failure. This article will offer new insights into the pathophysiological mechanisms of exertional dyspnoea in patients with chronic heart failure by exploring the potential role of the various constituents of the physiological response to exercise and particularly the role of abnormal ventilatory and respiratory mechanics responses to exercise in the perception of dyspnoea in patients with heart failure.
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Stugiewicz M, Tkaczyszyn M, Kasztura M, Banasiak W, Ponikowski P, Jankowska EA. The influence of iron deficiency on the functioning of skeletal muscles: experimental evidence and clinical implications. Eur J Heart Fail 2016; 18:762-73. [PMID: 26800032 DOI: 10.1002/ejhf.467] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 10/16/2015] [Accepted: 10/22/2015] [Indexed: 12/26/2022] Open
Abstract
Skeletal and respiratory myopathy not only constitutes an important pathophysiological feature of heart failure and chronic obstructive pulmonary disease, but also contributes to debilitating symptomatology and predicts worse outcomes in these patients. Accumulated evidence from laboratory experiments, animal models, and interventional studies in sports medicine suggests that undisturbed systemic iron homeostasis significantly contributes to the effective functioning of skeletal muscles. In this review, we discuss the role of iron status for the functioning of skeletal muscle tissue, and highlight iron deficiency as an emerging therapeutic target in chronic diseases accompanied by a marked muscle dysfunction.
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Affiliation(s)
- Magdalena Stugiewicz
- Students' Scientific Association, Laboratory for Applied Research on Cardiovascular System, Department of Heart Diseases, Wroclaw Medical University, Wroclaw, Poland
| | - Michał Tkaczyszyn
- Laboratory for Applied Research on Cardiovascular System, Department of Heart Diseases, Wroclaw Medical University, Wroclaw, Poland.,Cardiology Department, Centre for Heart Diseases, Military Hospital, Wroclaw, Poland
| | - Monika Kasztura
- Laboratory for Applied Research on Cardiovascular System, Department of Heart Diseases, Wroclaw Medical University, Wroclaw, Poland
| | - Waldemar Banasiak
- Cardiology Department, Centre for Heart Diseases, Military Hospital, Wroclaw, Poland
| | - Piotr Ponikowski
- Cardiology Department, Centre for Heart Diseases, Military Hospital, Wroclaw, Poland.,Department of Heart Diseases, Wroclaw Medical University, Wroclaw, Poland
| | - Ewa A Jankowska
- Laboratory for Applied Research on Cardiovascular System, Department of Heart Diseases, Wroclaw Medical University, Wroclaw, Poland.,Cardiology Department, Centre for Heart Diseases, Military Hospital, Wroclaw, Poland
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Jurgens CY, Goodlin S, Dolansky M, Ahmed A, Fonarow GC, Boxer R, Arena R, Blank L, Buck HG, Cranmer K, Fleg JL, Lampert RJ, Lennie TA, Lindenfeld J, Piña IL, Semla TP, Trebbien P, Rich MW. Heart failure management in skilled nursing facilities: a scientific statement from the American Heart Association and the Heart Failure Society of America. J Card Fail 2016; 21:263-99. [PMID: 25863664 DOI: 10.1016/j.cardfail.2015.02.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Giannoni A, Mirizzi G, Aimo A, Emdin M, Passino C. Peripheral reflex feedbacks in chronic heart failure: Is it time for a direct treatment? World J Cardiol 2015; 7:824-828. [PMID: 26730288 PMCID: PMC4691809 DOI: 10.4330/wjc.v7.i12.824] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 09/21/2015] [Accepted: 10/27/2015] [Indexed: 02/07/2023] Open
Abstract
Despite repeated attempts to develop a unifying hypothesis that explains the clinical syndrome of heart failure (HF), no single conceptual paradigm for HF has withstood the test of time. The last model that has been developed, the neurohormonal model, has the great virtue of highlighting the role of the heart as an endocrine organ, as well as to shed some light on the key role on HF progression of neurohormones and peripheral organs and tissues beyond the heart itself. However, while survival in clinical trials based on neurohormonal antagonist drugs has improved, HF currently remains a lethal condition. At the borders of the neurohormonal model of HF, a partially unexplored path trough the maze of HF pathophysiology is represented by the feedback systems. There are several evidences, from both animal studies and humans reports, that the deregulation of baro-, ergo- and chemo-reflexes in HF patients elicits autonomic imbalance associated with parasympathetic withdrawal and increased adrenergic drive to the heart, thus fundamentally contributing to the evolution of the disease. Hence, on top of guideline-recommended medical therapy, mainly based on neurohormonal antagonisms, all visceral feedbacks have been recently considered in HF patients as additional potential therapeutic targets.
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Kennel PJ, Mancini DM, Schulze PC. Skeletal Muscle Changes in Chronic Cardiac Disease and Failure. Compr Physiol 2015; 5:1947-69. [PMID: 26426472 DOI: 10.1002/cphy.c110003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Peak exercise performance in healthy man is limited not only by pulmonary or skeletal muscle function but also by cardiac function. Thus, abnormalities in cardiac function will have a major impact on exercise performance. Many cardiac diseases affect exercise performance and indeed for some cardiac conditions such as atherosclerotic heart disease, exercise testing is frequently used not only to measure functional capacity but also to make a diagnosis of heart disease, evaluate the efficacy of treatment, and predict prognosis. Early in the course of cardiac diseases, exercise performance will be minimally affected but with disease progression impairment in exercise capacity will become apparent. Ejection fraction, that is, the percent of blood volume ejected with each cardiac cycle is often used as a measure of cardiac performance but frequently there is a dissociation between the ejection fraction and exercise capacity in patients with heart disease. How abnormalities in cardiac function impacts the muscles, vasculature, and lungs to impact exercise performance will here be reviewed. The focus of this work will be on patients with systolic heart failure as the incidence and prevalence of heart failure is reaching epidemic proportions and heart failure is the end result of many other chronic cardiac diseases. The prognostic role of exercise and benefits of exercise training will also be discussed.
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Affiliation(s)
- Peter J Kennel
- Center for Advanced Cardiac Care, Division of Cardiology, New York-Presbyterian Hospital and Columbia University Medical Center, New York, USA
| | - Donna M Mancini
- Center for Advanced Cardiac Care, Division of Cardiology, New York-Presbyterian Hospital and Columbia University Medical Center, New York, USA
| | - P Christian Schulze
- Center for Advanced Cardiac Care, Division of Cardiology, New York-Presbyterian Hospital and Columbia University Medical Center, New York, USA
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Autonomic dysfunction in early breast cancer: Incidence, clinical importance, and underlying mechanisms. Am Heart J 2015; 170:231-41. [PMID: 26299219 DOI: 10.1016/j.ahj.2015.05.014] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 05/25/2015] [Indexed: 12/14/2022]
Abstract
Autonomic dysfunction represents a loss of normal autonomic control of the cardiovascular system associated with both sympathetic nervous system overdrive and reduced efficacy of the parasympathetic nervous system. Autonomic dysfunction is a strong predictor of future coronary heart disease, vascular disease, and sudden cardiac death. In the current review, we will discuss the clinical importance of autonomic dysfunction as a cardiovascular risk marker among breast cancer patients. We will review the effects of antineoplastic therapy on autonomic function, as well as discuss secondary exposures, such as psychological stress, sleep disturbances, weight gain/metabolic derangements, and loss of cardiorespiratory fitness, which may negatively impact autonomic function in breast cancer patients. Lastly, we review potential strategies to improve autonomic function in this population. The perspective can help guide new therapeutic interventions to promote longevity and cardiovascular health among breast cancer survivors.
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Hogrel JY, Barnouin Y, Azzabou N, Butler-Browne G, Voit T, Moraux A, Leroux G, Behin A, McPhee JS, Carlier PG. NMR imaging estimates of muscle volume and intramuscular fat infiltration in the thigh: variations with muscle, gender, and age. AGE (DORDRECHT, NETHERLANDS) 2015; 37:9798. [PMID: 26040416 PMCID: PMC4456487 DOI: 10.1007/s11357-015-9798-5] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 05/25/2015] [Indexed: 05/20/2023]
Abstract
Muscle mass is particularly relevant to follow during aging, owing to its link with physical performance and autonomy. The objectives of this work were to assess muscle volume (MV) and intramuscular fat (IMF) for all the muscles of the thigh in a large population of young and elderly healthy individuals using magnetic resonance imaging (MRI) to test the effect of gender and age on MV and IMF and to determine the best representative slice for the estimation of MV and IMF. The study enrolled 105 healthy young (range 20-30 years) and older (range 70-80 years) subjects. MRI scans were acquired along the femur length using a three-dimension three-point Dixon proton density-weighted gradient echo sequence. MV and IMF were estimated from all the slices. The effects of age and gender on MV and IMF were assessed. Predictive equations for MV and IMF were established using a single slice at various femur levels for each muscle in order to reduce the analysis process. MV was decreased with aging in both genders, particularly in the quadriceps femoris. IMF was largely increased with aging in men and, to a lesser extent, in women. Percentages of MV decrease and IMF increase with aging varied according to the muscle. Predictive equations to predict MV and IMF from single slices are provided and were validated. This study is the first one to provide muscle volume and intramuscular fat infiltration in all the muscles of the thigh in a large population of young and elderly healthy subjects.
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Affiliation(s)
- Jean-Yves Hogrel
- UPMC UM 76, INSERM U 974, CNRS UMR 7215, Institut de Myologie, GH Pitié-Salpêtrière, Paris, France,
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Traish AM, Abdallah B, Yu G. Androgen deficiency and mitochondrial dysfunction: implications for fatigue, muscle dysfunction, insulin resistance, diabetes, and cardiovascular disease. Horm Mol Biol Clin Investig 2015; 8:431-44. [PMID: 25961343 DOI: 10.1515/hmbci.2011.132] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 11/18/2011] [Indexed: 12/17/2022]
Abstract
Among the major physiological functions of steroid hormones is regulation of carbohydrate, fat, and protein metabolism. Mitochondria, through oxidative phosphorylation, play a critical role in modulating a host of complex cellular metabolic pathways to produce chemical energy to meet the metabolic demand for cellular function. Thus, androgens may regulate cellular metabolism and energy production by increased mitochondrial numbers, activation of respiratory chain components, and increased transcription of mitochondrial-encoded respiratory chain genes that code for enzymes responsible for oxidative phosphorylation. Androgen deficiency is associated with increased insulin resistance, type 2 diabetes (T2DM), metabolic syndrome, obesity, and increased overall mortality. One common link among all these pathologies is mitochondrial dysfunction. Contemporary evidence exists suggesting that testosterone deficiency (TD) contributes to mitochondrial dysfunction, including structural alterations and reduced expression and activities of metabolic enzymes. Here, we postulate that TD contributes to symptoms of fatigue, insulin resistance, T2DM, cardiovascular risk, and metabolic syndrome through a common mechanism involving impairment of mitochondrial function.
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63
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Jurgens CY, Goodlin S, Dolansky M, Ahmed A, Fonarow GC, Boxer R, Arena R, Blank L, Buck HG, Cranmer K, Fleg JL, Lampert RJ, Lennie TA, Lindenfeld J, Piña IL, Semla TP, Trebbien P, Rich MW. Heart failure management in skilled nursing facilities: a scientific statement from the American Heart Association and the Heart Failure Society of America. Circ Heart Fail 2015; 8:655-87. [PMID: 25855686 DOI: 10.1161/hhf.0000000000000005] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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64
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Jung MH, Gustafsson F. Exercise in heart failure patients supported with a left ventricular assist device. J Heart Lung Transplant 2015; 34:489-96. [DOI: 10.1016/j.healun.2014.11.001] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 10/29/2014] [Accepted: 11/04/2014] [Indexed: 12/17/2022] Open
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Lombardi M, Tagliente MR, Pirolo T, Massari E, Vairo U. Long QT syndrome in isolated ventricular noncompaction. J Cardiovasc Med (Hagerstown) 2014; 18:784-787. [PMID: 27042894 DOI: 10.2459/jcm.0b013e32835e3569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Maristella Lombardi
- Department of Pediatric Cardiology, Ospedale Pediatrico Giovanni XXIII, Bari, Italy
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Josiak K, Jankowska EA, Piepoli MF, Banasiak W, Ponikowski P. Skeletal myopathy in patients with chronic heart failure: significance of anabolic-androgenic hormones. J Cachexia Sarcopenia Muscle 2014; 5:287-96. [PMID: 25081949 PMCID: PMC4248408 DOI: 10.1007/s13539-014-0152-z] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 05/26/2014] [Indexed: 12/03/2022] Open
Abstract
In heart failure, impairment of cardiac muscle function leads to numerous neurohormonal and metabolic disorders, including an imbalance between anabolic and catabolic processes, in favour of the latter. These disorders cause loss of muscle mass with structural and functional changes within the skeletal muscles, known as skeletal myopathy. This phenomenon constitutes an important mechanism that participates in the pathogenesis of chronic heart failure. both its clinical symptoms and the progression of the disease. Attempts to reverse the above-mentioned pathologic processes by exploiting the anabolic action of androgenic hormones could provide a potentially attractive treatment option. The current concepts of anabolic androgen deficiency and resultant skeletal myopathy in patients with heart failure are reviewed, and the potential role of anabolic-androgenic hormones as an emerging therapeutic option for targeting heart failure is discussed.
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Affiliation(s)
- Krystian Josiak
- Clinic for Heart Diseases, Wroclaw Medical University, Wroclaw, Poland,
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Doehner W, Frenneaux M, Anker SD. Metabolic impairment in heart failure: the myocardial and systemic perspective. J Am Coll Cardiol 2014; 64:1388-400. [PMID: 25257642 DOI: 10.1016/j.jacc.2014.04.083] [Citation(s) in RCA: 164] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 04/03/2014] [Accepted: 04/21/2014] [Indexed: 01/08/2023]
Abstract
Although bioenergetic starvation is not a new concept in heart failure (HF), recent research has led to a growing appreciation of the complexity of metabolic aspects of HF pathophysiology. All steps of energy extraction, transfer, and utilization are affected, and structural metabolism is impaired, leading to compromised functional integrity of tissues. Not only the myocardium, but also peripheral tissues and organs are affected by metabolic failure, resulting in a global imbalance between catabolic and anabolic signals, leading to tissue wasting and, ultimately, to cachexia. Metabolic feedback signals from muscle and fat actively contribute to further myocardial strain, promoting disease progression. The prolonged survival of patients with stable, compensated HF will increasingly bring chronic metabolic complications of HF to the fore and gradually shift its clinical presentation. This paper reviews recent evidence on myocardial and systemic metabolic impairment in HF and summarizes current and emerging therapeutic concepts with specific metabolic targets.
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Affiliation(s)
- Wolfram Doehner
- Centre for Stroke Research Berlin and Department of Cardiology, Campus Virchow-Klinikum Charité-Universitätsmedizin Berlin, Berlin, Germany.
| | - Michael Frenneaux
- University of Aberdeen School of Medicine and Dentistry, Aberdeen, United Kingdom
| | - Stefan D Anker
- Department of Innovative Clinical Trials, University Medical Centre, Göttingen, Germany
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Pardaens S, Vanderheyden M, Calders P, Willems AM, Bartunek J, de Sutter J. Activation of the ergoreceptors in cardiac patients with and without heart failure. J Card Fail 2014; 20:747-754. [PMID: 25079301 DOI: 10.1016/j.cardfail.2014.07.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 07/14/2014] [Accepted: 07/16/2014] [Indexed: 01/18/2023]
Abstract
BACKGROUND The presence of ergoreflex activity and its current relationship to hyperventilation and prognosis in cardiac patients is unclear. Therefore, we evaluated ergoreflex activity in cardiac patients with and without heart failure (CHF) as well as in healthy subjects, and we examined how ergoreceptor activity was related to a mortality risk score in CHF (MAGGIC). METHODS AND RESULTS Twenty-five healthy subjects and 76 patients were included, among whom were 25 with ischemic heart disease (IHD), 24 with stable CHF, and 27 with unstable CHF. Ergoreflex activity was measured with a dynamic handgrip exercise, followed by post-handgrip regional circulatory occlusion (PH-RCO). Ergoreflex activity contributed significantly to ventilation (median [interquartile range] %V) in unstable CHF (81 [73-91] %V without PH-RCO, 92 [82-107] %V with PH-RCO, and 11 [6-20] difference in %V; P < .001) and was positively correlated with the MAGGIC risk score (Spearman ρ = 0.431; P = .002). No ergoreflex activity was observed in healthy subjects (-4 [-10 to 5] difference in %V), IHD (0 [-8 to 3] Diff in %V) and stable CHF (-3 [-11 to 6] difference in %V). CONCLUSIONS Ergoreflex activity contributes to hyperventilation, but only in CHF patients with persistent symptoms, and is closely related to the MAGGIC risk score. Ergoreflex activity was not present in patients with IHD or stable CHF, suggesting other reasons for the increased ventilatory drive in those patients.
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Affiliation(s)
- Sofie Pardaens
- Department of Internal Medicine, Ghent University, Ghent, Belgium.
| | | | - Patrick Calders
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Ghent, Belgium
| | | | - Jozef Bartunek
- Cardiovascular Center, Onze-Lieve-Vrouw Hospital, Aalst, Belgium
| | - Johan de Sutter
- Department of Internal Medicine, Ghent University, Ghent, Belgium; Department of Cardiology, AZ Maria Middelares, Ghent, Belgium
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Taguchi T, Adachi H, Hoshizaki H, Oshima S, Kurabayashi M. Effect of physical training on ventilatory patterns during exercise in patients with heart disease. J Cardiol 2014; 65:343-8. [PMID: 25012061 DOI: 10.1016/j.jjcc.2014.06.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 06/03/2014] [Accepted: 06/05/2014] [Indexed: 11/17/2022]
Abstract
BACKGROUND Exercise training is known to improve the shortness of breath experienced by patients with heart disease when the ventilatory pattern becomes abnormal during exercise. However, the precise relationship between breathing patterns and the effect of exercise training has not been elucidated to date. We evaluated the relationship between the effect of exercise training on exercise tolerance and the amelioration of the ventilatory response during exercise in such patients. METHODS AND RESULTS Patients with heart disease (n=170) underwent cardiopulmonary exercise testing twice (pre- and postexercise training for 3-6 months). They were divided into the exercise training group (Group E, n=123) and control group (Group C, n=47). Regression line relating tidal volume to respiratory rate (TV-RR slope) during a ramp protocol below the inflection point was regarded as an indicator of rapid ventilation. Tidal volume after the inflection point was regarded as an indicator of shallow ventilation (TV at plateau). The TV-RR slope and TV at plateau improved after exercise training from 94.8±45.9 to 129.9±69.5 (p<0.001) and from 1473.6±321.9mL to 1673.2±355.1mL (p<0.001), respectively, in Group E. In contrast, no improvement was evident in Group C. In total, %anaerobic threshold (%AT) [AT improving ratio=(post-AT-pre-AT)/pre-AT×100] was positively correlated with both %TV-RR slope [TV-RR slope improving ratio=(post-TV-RR slope-pre-TV-RR slope)/pre-TV-RR slope×100] (r=0.60) and %TV at plateau [TV at plateau improving ratio=(post-TV at plateau-pre-TV at plateau)/pre-TV at plateau×100] (r=0.51). CONCLUSION Exercise training improved the rapidness and depth of breathing during exercise. Therefore, improvement of abnormal ventilatory patterns is correlated with exercise tolerance.
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Affiliation(s)
- Tetsuya Taguchi
- Department of Medicine and Biological Science, Graduate School of Medicine, Gunma University, Gunma, Japan.
| | | | | | | | - Masahiko Kurabayashi
- Department of Medicine and Biological Science, Graduate School of Medicine, Gunma University, Gunma, Japan
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Kazemi-Bajestani SMR, Becher H, Fassbender K, Chu Q, Baracos VE. Concurrent evolution of cancer cachexia and heart failure: bilateral effects exist. J Cachexia Sarcopenia Muscle 2014; 5:95-104. [PMID: 24627226 PMCID: PMC4053562 DOI: 10.1007/s13539-014-0137-y] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 02/10/2014] [Indexed: 12/12/2022] Open
Abstract
Cancer cachexia is defined as a multifactorial syndrome of involuntary weight loss characterized by an ongoing loss of skeletal muscle mass and progressive functional impairment. It is postulated that cardiac dysfunction/atrophy parallels skeletal muscle atrophy in cancer cachexia. Cardiotoxic chemotherapy may additionally result in cardiac dysfunction and heart failure in some cancer patients. Heart failure thus may be a consequence of either ongoing cachexia or chemotherapy-induced cardiotoxicity; at the same time, heart failure can result in cachexia, especially muscle wasting. Therefore, the subsequent heart failure and cardiac cachexia can exacerbate the existing cancer-induced cachexia. We discuss these bilateral effects between cancer cachexia and heart failure in cancer patients. Since cachectic patients are more susceptible to chemotherapy-induced toxicity overall, this may also include increased cardiotoxicity of antineoplastic agents. Patients with cachexia could thus be doubly unfortunate, with cachexia-related cardiac dysfunction/heart failure and increased susceptibility to cardiotoxicity during treatment. Cardiovascular risk factors as well as pre-existing heart failure seem to exacerbate cardiac susceptibility against cachexia and increase the rate of cardiac cachexia. Hence, chemotherapy-induced cardiotoxicity, cardiovascular risk factors, and pre-existing heart failure may accelerate the vicious cycle of cachexia-heart failure. The impact of cancer cachexia on cardiac dysfunction/heart failure in cancer patients has not been thoroughly studied. A combination of serial echocardiography for detection of cachexia-induced cardiac remodeling and computed tomography image analysis for detection of skeletal muscle wasting would appear a practical and non-invasive approach to develop an understanding of cardiac structural/functional alterations that are directly related to cachexia.
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Affiliation(s)
| | - Harald Becher
- />Department of Medicine, Division of Cardiology, Alberta Cardiovascular and Stroke Research Centre, University of Alberta, Edmonton, Canada
| | - Konrad Fassbender
- />Department of Oncology, Division of Palliative Care Medicine, University of Alberta, Edmonton, Canada
| | - Quincy Chu
- />Department of Oncology, Division of Medical Oncology, Cross Cancer Institute, University of Alberta, Edmonton, Canada
| | - Vickie E. Baracos
- />Department of Oncology, Division of Palliative Care Medicine, University of Alberta, Edmonton, Canada
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Murayama R, Carraro LD, Galvanin T, Izukawa NM, Umeda I, Oliveira MF. Peripheral vascular insufficiency impairs functional capacity in patients with heart failure. J Vasc Bras 2014. [DOI: 10.1590/jvb.2014.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION: Heart failure (HF) is a complex syndrome in which effort limitation is associated with deterioration of peripheral musculature. Improving survival rates among these patients have led to the appearance of cases in which other pathologies are associated with HF, such as peripheral vascular insufficiency (PVI). The combination of these two pathologies is common, with significant repercussions for affected patients. OBJECTIVE: To compare functional limitations and quality of life between patients with HF in isolation or HF + PVI. METHOD: Twelve patients with HF+PVI were paired to 12 patients with HF in isolation. All had ejection fraction <40%. The following were conducted: 6 minute walk test (6MWT), chair test (CT), step test (ST), one repetition maximum test (1RM) and quality of life questionnaire. RESULTS: The results for the 6MWT (311±27 vs. 447±29), ST (49±3 vs. 81±10) and CT (17±1 vs. 21±1) were lower in the HF+PVI group than in the HF group (p<0.05). The HF+PVI group exhibited a reduction in the number of steps taken from the first to the second minute of the ST, in relation to the HF group. The HF group exhibited better HR recovery than the HF+PVI group (50±4 vs. 26±3; p<0.05). No differences were found in results for the Borg scale, the peripheral muscle strength test (1RM) or the questionnaires (p>0.05). CONCLUSIONS: The study participants who had mixed disease exhibited a greater degree of functional impairment than the group with HF, without reporting worsened quality of life.
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Affiliation(s)
| | | | | | - Nilo Mitsuru Izukawa
- Instituto Dante Pazzanese de Cardiologia, Ambulatório de Insuficiência Vascular, Brazil
| | | | - Mayron Faria Oliveira
- Instituto Dante Pazzanese de Cardiologia, Brazil; Universidade Federal de São Paulo - UNIFESP, Brazil
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Tzanis G, Dimopoulos S, Agapitou V, Nanas S. Exercise intolerance in chronic heart failure: the role of cortisol and the catabolic state. Curr Heart Fail Rep 2014; 11:70-9. [PMID: 24293034 DOI: 10.1007/s11897-013-0177-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Chronic heart failure (CHF) is a complex clinical syndrome leading to exercise intolerance due to muscular fatigue and dyspnea. Hemodynamics fail to explain the reduced exercise capacity, while a significant skeletal muscular pathology seems to constitute the main underlying mechanism for exercise intolerance in CHF patients. There have been proposed several metabolic, neurohormonal and immune system abnormalities leading to an anabolic/catabolic imbalance that plays a central role in the pathogenesis of the wasting process of skeletal muscle myopathy. The impairment of the anabolic axes is associated with the severity of symptoms and the poor outcome in CHF, whereas increased cortisol levels are predictive of exercise intolerance, ventilatory inefficiency and chronotropic incompetence, suggesting a significant contributing mechanism to the limited functional status. Exercise training and device therapy could have beneficial effects in preventing and treating muscle wasting in CHF. However, specific anabolic treatment needs more investigation to prove possible beneficial effects.
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Affiliation(s)
- Georgios Tzanis
- 1st Critical Care Medicine Department, Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, "Evgenidio Hospital", National & Kapodestrian University of Athens, Papadiamantopoulou str., 20, Athens, 11528, Greece
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Tasoulis A, Dimopoulos S, Repasos E, Manetos C, Tzanis G, Sousonis V, Papazachou O, Terrovitis J, Nanas S. Respiratory drive and breathing pattern abnormalities are related to exercise intolerance in chronic heart failure patients. Respir Physiol Neurobiol 2014; 192:90-4. [PMID: 24361502 DOI: 10.1016/j.resp.2013.11.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Revised: 11/27/2013] [Accepted: 11/28/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND Patients with chronic heart failure (CHF) are characterized by exercise intolerance and ventilatory abnormalities that are related to poor prognosis. We hypothesized that CHF patients have increased respiratory drive and abnormal breathing pattern during exercise in relation to disease severity. MATERIALS AND METHODS The study population consisted of 219 stable CHF patients and 30 healthy control subjects. All subjects underwent a symptom-limited cardiopulmonary exercise testing (CPET), pulmonary function tests, measurement of the maximal inspiratory pressure (PImax) and respiratory drive (P0.1). Measurements included peak oxygen uptake ( [Formula: see text] peak, ml/kg/min). Respiratory drive was measured by mouth occlusion pressure P0.1 and P0.1/PImax ratio at rest, and by mean inspiratory flow (VT/TI) at rest and during exercise. CHF patients were divided into 3 groups according to [Formula: see text] peak (Group A: >20, Group B: 20-16 and Group C: <16ml/kg/min). RESULTS CHF patients presented higher P0.1/PImax (4.1±3.6 vs 3.0±1.5, p=0.007) and VT/TI at rest (0.48±0.14 vs 0.41±0.10, L/s respectively, p=0.004) and lower VT/TI at peak exercise (2.17±0.66 vs 2.56±0.73, L/s, p=0.009) compared to controls. P0.1/PImax was higher in CHF Group C vs B vs A (4.9±2.9 vs 3.6±1.8 vs 3.1±1.8, respectively, p<0.001), while VT/TI at peak exercise was lower (1.71±0.43 vs 2.15±0.52 vs 2.65±0.64, L/s, respectively, p<0.001). CONCLUSIONS CHF patients present increased respiratory drive at rest and abnormal breathing pattern during exercise in relation to CHF severity.
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Affiliation(s)
- Athanasios Tasoulis
- 1st Critical Care Medicine Department, Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, "Evgenidio" Hospital, NKUA, Athens, Greece
| | - Stavros Dimopoulos
- 1st Critical Care Medicine Department, Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, "Evgenidio" Hospital, NKUA, Athens, Greece
| | | | - Christos Manetos
- 1st Critical Care Medicine Department, Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, "Evgenidio" Hospital, NKUA, Athens, Greece
| | - Giorgos Tzanis
- 1st Critical Care Medicine Department, Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, "Evgenidio" Hospital, NKUA, Athens, Greece
| | | | - Ourania Papazachou
- 1st Critical Care Medicine Department, Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, "Evgenidio" Hospital, NKUA, Athens, Greece
| | - John Terrovitis
- 3rd Cardiology Department, "Laiko" Hospital, NKUA, Athens, Greece
| | - Serafim Nanas
- 1st Critical Care Medicine Department, Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, "Evgenidio" Hospital, NKUA, Athens, Greece.
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74
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Piepoli MF, Crisafulli A. Pathophysiology of human heart failure: importance of skeletal muscle myopathy and reflexes. Exp Physiol 2013; 99:609-15. [PMID: 24293507 DOI: 10.1113/expphysiol.2013.074310] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In the last 20 years there has been mounting evidence that chronic heart failure (CHF) has a complex pathophysiology, which begins with an abnormality of the heart as a 'primum movens', but involves adaptive changes in many body parts, including the cardiovascular, musculoskeletal, renal, neuroendocrine, haemostatic, immune and inflammatory systems. Alterations in skeletal muscle are also of importance in limiting functional capacity in patients with CHF, because reduced physical activity plays some part in the muscle alterations in CHF. On the whole, these abnormalities resemble those induced by physical deconditioning. Moreover, the overactivation of signals originating from skeletal muscle receptors (mechano-metaboreceptors) is an intriguing hypothesis proposed to explain the origin of symptoms and the beneficial effect of exercise training in the CHF syndrome. These reflexes may contribute to sympathetic overactivation, to exercise intolerance and to the progression of CHF syndrome. The so-called metaboreflex has been reported to be hyperactive in CHF and to be responsible for a paradoxical increase in systemic vascular resistance and decrease in cardiac output whenever activated in these patients. This report is a brief summary of the latest news in this area of research.
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Affiliation(s)
- Massimo F Piepoli
- * Department of Medical Sciences, Sports Physiology Laboratory, University of Cagliari, Via Porcell 4, 09124 Cagliari, Italy.
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75
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Clinical outcomes related to muscle mass in humans with cancer and catabolic illnesses. Int J Biochem Cell Biol 2013; 45:2302-8. [DOI: 10.1016/j.biocel.2013.06.016] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 06/05/2013] [Accepted: 06/14/2013] [Indexed: 01/03/2023]
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Ramos RP, Alencar MCN, Treptow E, Arbex F, Ferreira EMV, Neder JA. Clinical usefulness of response profiles to rapidly incremental cardiopulmonary exercise testing. Pulm Med 2013; 2013:359021. [PMID: 23766901 PMCID: PMC3666297 DOI: 10.1155/2013/359021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2012] [Revised: 12/17/2012] [Accepted: 01/15/2013] [Indexed: 02/06/2023] Open
Abstract
The advent of microprocessed "metabolic carts" and rapidly incremental protocols greatly expanded the clinical applications of cardiopulmonary exercise testing (CPET). The response normalcy to CPET is more commonly appreciated at discrete time points, for example, at the estimated lactate threshold and at peak exercise. Analysis of the response profiles of cardiopulmonary responses at submaximal exercise and recovery, however, might show abnormal physiologic functioning which would not be otherwise unraveled. Although this approach has long been advocated as a key element of the investigational strategy, it remains largely neglected in practice. The purpose of this paper, therefore, is to highlight the usefulness of selected submaximal metabolic, ventilatory, and cardiovascular variables in different clinical scenarios and patient populations. Special care is taken to physiologically justify their use to answer pertinent clinical questions and to the technical aspects that should be observed to improve responses' reproducibility and reliability. The most recent evidence in favor of (and against) these variables for diagnosis, impairment evaluation, and prognosis in systemic diseases is also critically discussed.
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Affiliation(s)
- Roberta P. Ramos
- Pulmonary Function and Clinical Exercise Physiology Unit (SEFICE), Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Rua Francisco de Castro 54, Vila Mariana, 04020-050 São Paulo, SP, Brazil
| | - Maria Clara N. Alencar
- Pulmonary Function and Clinical Exercise Physiology Unit (SEFICE), Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Rua Francisco de Castro 54, Vila Mariana, 04020-050 São Paulo, SP, Brazil
| | - Erika Treptow
- Pulmonary Function and Clinical Exercise Physiology Unit (SEFICE), Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Rua Francisco de Castro 54, Vila Mariana, 04020-050 São Paulo, SP, Brazil
| | - Flávio Arbex
- Pulmonary Function and Clinical Exercise Physiology Unit (SEFICE), Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Rua Francisco de Castro 54, Vila Mariana, 04020-050 São Paulo, SP, Brazil
| | - Eloara M. V. Ferreira
- Pulmonary Function and Clinical Exercise Physiology Unit (SEFICE), Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Rua Francisco de Castro 54, Vila Mariana, 04020-050 São Paulo, SP, Brazil
| | - J. Alberto Neder
- Pulmonary Function and Clinical Exercise Physiology Unit (SEFICE), Division of Respiratory Diseases, Department of Medicine, Federal University of Sao Paulo (UNIFESP), Rua Francisco de Castro 54, Vila Mariana, 04020-050 São Paulo, SP, Brazil
- Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University and Kingston General Hospital, Richardson House, 102 Stuart Street, Kingston, ON, Canada K7L 2V6
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Paolillo S, Pellegrino R, Salvioni E, Contini M, Iorio A, Bovis F, Antonelli A, Torchio R, Gulotta C, Locatelli A, Agostoni P. Role of alveolar β2-adrenergic receptors on lung fluid clearance and exercise ventilation in healthy humans. PLoS One 2013; 8:e61877. [PMID: 23613962 PMCID: PMC3627811 DOI: 10.1371/journal.pone.0061877] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 03/14/2013] [Indexed: 11/19/2022] Open
Abstract
Background In experimental conditions alveolar fluid clearance is controlled by alveolar β2-adrenergic receptors. We hypothesized that if this occurs in humans, then non-selective β-blockers should reduce the membrane diffusing capacity (DM), an index of lung interstitial fluid homeostasis. Moreover, we wondered whether this effect is potentiated by saline solution infusion, an intervention expected to cause interstitial lung edema. Since fluid retention within the lungs might trigger excessive ventilation during exercise, we also hypothesized that after the β2-blockade ventilation increased in excess to CO2 output and this was further enhanced by interstitial edema. Methods and Results 22 healthy males took part in the study. On day 1, spirometry, lung diffusion for carbon monoxide (DLCO) including its subcomponents DM and capillary volume (VCap), and cardiopulmonary exercise test were performed. On day 2, these tests were repeated after rapid 25 ml/kg saline infusion. Then, in random order 11 subjects were assigned to oral treatment with Carvedilol (CARV) and 11 to Bisoprolol (BISOPR). When heart rate fell at least by 10 beats·min−1, the tests were repeated before (day 3) and after saline infusion (day 4). CARV but not BISOPR, decreased DM (−13±7%, p = 0.001) and increased VCap (+20±22%, p = 0.016) and VE/VCO2 slope (+12±8%, p<0.01). These changes further increased after saline: −18±13% for DM (p<0.01), +44±28% for VCap (p<0.001), and +20±10% for VE/VCO2 slope (p<0.001). Conclusions These findings support the hypothesis that in humans in vivo the β2-alveolar receptors contribute to control alveolar fluid clearance and that interstitial lung fluid may trigger exercise hyperventilation.
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Affiliation(s)
- Stefania Paolillo
- Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milano, Italy
- Dipartimento di Medicina Interna, Scienze cardiovascolari ed immunologiche, Università Federico II, Napoli, Italy
| | - Riccardo Pellegrino
- Allergologia e Fisiopatologia Respiratoria, ASO S. Croce e Carle, Cuneo, Italy
| | - Elisabetta Salvioni
- Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milano, Italy
| | - Mauro Contini
- Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milano, Italy
| | - Annamaria Iorio
- Dipartimento cardiovascolare, Ospedali Riuniti e Università di Trieste, Trieste, Italy
| | - Francesca Bovis
- Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milano, Italy
| | - Andrea Antonelli
- Allergologia e Fisiopatologia Respiratoria, ASO S. Croce e Carle, Cuneo, Italy
| | - Roberto Torchio
- Pneumologia-Fisiopatologia Respiratoria, AOU S. Luigi, Orbassano, Torino, Italy
| | - Carlo Gulotta
- Pneumologia-Fisiopatologia Respiratoria, AOU S. Luigi, Orbassano, Torino, Italy
| | | | - Piergiuseppe Agostoni
- Centro Cardiologico Monzino, Istituto Di Ricovero e Cura a Carattere Scientifico, Milano, Italy
- Dipartimento di Scienze Cliniche e di Comunità, Università di Milano, Milan, Italy
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle, Washington, United States of America
- * E-mail:
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Agapitou V, Dimopoulos S, Kapelios C, Karatzanos E, Manetos C, Georgantas A, Ntalianis A, Terrovitis J, Karga H, Nanas S. Hormonal imbalance in relation to exercise intolerance and ventilatory inefficiency in chronic heart failure. J Heart Lung Transplant 2013; 32:431-6. [PMID: 23402947 DOI: 10.1016/j.healun.2012.12.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 09/04/2012] [Accepted: 12/20/2012] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Skeletal muscle wasting is associated with altered catabolic/anabolic balance and poor prognosis in patients with chronic heart failure (CHF). This study evaluated catabolic and anabolic abnormalities in relation to disease severity in CHF patients. METHODS Forty-two stable CHF patients (34 men; aged 56±12 years, body mass index, 27±5 kg/m2) receiving optimal medical treatment underwent incremental symptom-limited cardiopulmonary exercise testing on a cycle ergometer. Blood samples were drawn within 10 days to determine serum cortisol, plasma adrenocorticotropin (ACTH), and serum dehydroepiandrosterone sulfate, insulin-like growth factor 1, growth hormone, and total testosterone in men. RESULTS Patients with higher cortisol levels presented with impaired peak oxygen uptake (Vo2 peak: 18.3±3.9 vs. 14.2±3.7 ml/kg/min, p<0.01), ventilatory (Ve) response to exercise (Ve/carbon dioxide output [Vco2] slope: 36±6 vs 30±5, p<0.01), and chronotropic reserve ([peak heart rate [HR]--resting HR/220--age--resting HR]×100%: 40±19 vs. 58±18, p=0.01) compared with those with lower serum cortisol. Cortisol was inversely correlated with Vo2 peak, (r = -0.57; p<0.01) and was correlated with Ve/Vco2 slope (r = 0.47; p<0.01) and chronotropic reserve (r = 0.44; p = 0.017). In multivariate regression analysis, cortisol was an independent predictor of Vo2peak (R2 = 0.365, F = 12.5, SE = 3.4; p≤0.001) and Ve/Vco2 slope (R2 = 0.154; F = 8.5; SE = 5.96; p = 0.006), after accounting for age, body mass index, sex, CHF etiology, creatinine, left ventricular ejection fraction, and ACTH in all patients. In men, cortisol and dehydroepiandrosterone levels were both independent predictors of Vo2peak (R2 = 0.595, F = 24.53, SE = 2.76; p<0.001) after accounting also for all measured hormones, whereas cortisol remained the only independent predictor of Ve/Vco2 slope (R2 = 0.133; F = 6.1; SE = 6.2; p = 0.02). CONCLUSIONS Enhanced catabolic status is significantly associated with exercise intolerance, ventilatory inefficiency, and chronotropic incompetence in CHF patients, suggesting a significant contributing mechanism to their limited functional status.
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Affiliation(s)
- Varvara Agapitou
- First Critical Care Medicine Department, Cardiopulmonary Exercise Testing and Rehabilitation Laboratory, Evgenidio Hospital, Greece
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Crisafulli A, Tocco F, Milia R, Angius L, Pinna M, Olla S, Roberto S, Marongiu E, Porcu M, Concu A. Progressive improvement in hemodynamic response to muscle metaboreflex in heart transplant recipients. J Appl Physiol (1985) 2012. [PMID: 23195627 DOI: 10.1152/japplphysiol.01099.2012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Exercise capacity remains lower in heart transplant recipients (HTRs) following transplant compared with normal subjects, despite improved cardiac function. Moreover, metaboreceptor activity in the muscle has been reported to increase. The aim of the present investigation was to assess exercise capacity together with metaboreflex activity in HTR patients for 1 yr following heart transplant, to test the hypothesis that recovery in exercise capacity was paralleled by improvements in response to metaboreflex. A cardiopulmonary test for exercise capacity and Vo(2max) and hemodynamic response to metaboreflex activation obtained by postexercise ischemia were gathered in six HTRs and nine healthy controls (CTL) four times: at the beginning of the study (T0, 42 ± 6 days after transplant), at the 3rd, 6th, and 12th month after TO (T1, T2, and T3). The main results were: 1) exercise capacity and Vo(2max) were seen to progressively increase in HTRs; 2) at T0 and T1, HTRs achieved a higher blood pressure response in response to metaboreflex compared with CTL, and this difference disappeared at T2 and T3; and 3) this exaggerated blood pressure response was the result of a systemic vascular resistance increment. This study demonstrates that exercise capacity progressively improves in HTRs after transplant and that this phenomenon is accompanied by a progressive reduction of the metaboreflex-induced increase in blood pressure and systemic vascular resistance. These facts indicate that, despite improved cardiac function, resetting of cardiovascular regulation in HTRs requires months.
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Affiliation(s)
- Antonio Crisafulli
- Department of Medical Sciences, Sport Physiology Lab., University of Cagliari, Italy.
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Abstract
Testosterone deficiency is a generalized phenomenon seen in the course of chronic heart failure (CHF). Reduction in circulating testosterone level is a predictor of deterioration of functional capacity over time, underscoring the role of testosterone deficiency in CHF. Anabolic hormones are determinants of exercise capacity and circulating levels of anabolic hormones strongly determine muscle mass and strength. Testosterone deficiency is involved in the pathophysiology of CHF, contributing to some features of this syndrome, such as the reduced muscle mass, abnormal energy handling, fatigue, dyspnea and, finally, cachexia. This review summarizes current knowledge on the role of testosterone deficiency in the pathophysiology of CHF, gaining insights from the potential implications of testosterone as supplementation therapy.
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Affiliation(s)
- Maurizio Volterrani
- Cardiovascular Research Unit, Department of Medical Sciences, Centre for Clinical and Basic Research, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Pisana, via della Pisana 235, 00163 Rome, Italy.
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Lecker SH, Zavin A, Cao P, Arena R, Allsup K, Daniels KM, Joseph J, Schulze PC, Forman DE. Expression of the irisin precursor FNDC5 in skeletal muscle correlates with aerobic exercise performance in patients with heart failure. Circ Heart Fail 2012; 5:812-8. [PMID: 23001918 DOI: 10.1161/circheartfailure.112.969543] [Citation(s) in RCA: 154] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Exercise-induced increase in peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) expression has been shown to increase the expression of the fibronectin type III domain containing 5 (FNDC5) gene and thereby its product, irisin, in mice. Given that exercise intolerance is a hallmark characteristic of heart failure (HF), and because PGC-1α and irisin promote exercise benefits in animals, we hypothesized that expression of these genes relates to aerobic performance in patients with HF. METHODS AND RESULTS Systolic HF (left ventricular ejection fraction ≤40%) patients underwent cardiopulmonary exercise testing to evaluate aerobic performance. High versus low aerobic performance was assessed using oxygen consumption (peak Vo(2) [>14 versus ≤14 mL O(2)·kg(-1)·min(-1)]) and ventilatory efficiency (VE/Vco(2) slope [<34 versus ≥34]). Muscle biopsies of the vastus lateralis and real-time polymerase chain reaction were used to quantify muscle gene expression. Twenty-four patients were studied. FNDC5 (5.7±3.5 versus 3.1±1.2, P<0.05) and PGC-1α (9.9±5.9 versus 4.5±1.9, P<0.01) gene expressions were greater in the high-peak Vo(2) group; correlation between FNDC5 and PGC-1α was significant (r=0.56, P<0.05) only in the high-peak Vo(2) group. Similarly, FNDC5 and PGC-1α gene expression was greater in the high-performance group based on lower VE/Vco(2) slopes (5.8±3.6 versus 3.3±1.4, P<0.05 and 9.7±6 versus 5.3±3.4, P<0.05); FNDC5 also correlated with PGC-1α (r=0.55, P<0.05) only in the low VE/Vco(2) slope group. CONCLUSIONS This is the first study to show that FNDC5 expression relates to functional capacity in a human HF population. Lower FNDC5 expression may underlie reduced aerobic performance in HF patients.
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Affiliation(s)
- Stewart H Lecker
- Division of Nephrology, Beth Israel Deaconess Medical Center, Boston, MA, USA
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83
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Cardiac resynchronization therapy reduces metaboreflex contribution to the ventilatory response in heart failure population. Cardiol Res Pract 2012; 2012:914071. [PMID: 22536532 PMCID: PMC3317128 DOI: 10.1155/2012/914071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 01/09/2012] [Indexed: 11/18/2022] Open
Abstract
Background. Metaboreflex overactivation has been proprosed to explain exaggerated hyperventilation in heart failure population. We investigated the metaboreflex activation after cardiac resynchronization therapy (CRT). Methods. 10 heart failure patients (mean left ventricular ejection fraction (LVEF) 27 ± 4%) schedulded for CRT implantation were prospectively studied. At baseline and after 6 month follow up two maximal cardiopulmonary exercise tests with and without regional circulatory occlusion (RCO) during recovery were performed. RCO was achieved by inflation of bilateral upper thigh tourniquets 30 mmHg above peak systolic blood pressure during 3 minutes after peak exercise. Metaboreflex contribution to the ventilatory response was assessed as the difference in ventilatory data at the third minute during recovery between the two tests (Δ). Results. Patients had enhanced VE/VCO(2) slope (40 ± 9) and an evident metaboreflex contribution to the high ventilatory response (ΔVE: 3 ± 4 L/min; P = 0.05, ΔRR: 4.5 ± 4/min; P = 0.003 and ΔVE/VCO(2): 5.5 ± 4; P = 0.007). 6 months after CRT implantation, NYHA class, LVEF, peak VO(2) and VE/VCO(2) were significantly improved (1.4 ± 0.5; P < 0.001, 42 ± 7%; P < 0.001, 16.5 ± 3 mL/kg/min; P = 0.003; 33 ± 10; P = 0.01). Metaboreflex contribution to VE, RR, and VE/VCO(2) was reduced compared with baseline (P = 0.08, P = 0.01 and P = 0.4 resp.). Conclusion. 6 months after CRT metaboreflex contribution to the ventilatory response is reduced.
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Zavin A, Arena R, Joseph J, Allsup K, Daniels K, Schulze PC, Lecker S, Forman DE. Dynamic assessment of ventilatory efficiency during recovery from peak exercise to enhance cardiopulmonary exercise testing. Eur J Prev Cardiol 2012; 20:779-85. [PMID: 22517928 DOI: 10.1177/2047487312446563] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND While cardiopulmonary exercise testing (CPX) assessment is generally regarded as an optimal means to assess functional capacity in heart failure (HF) patients, strength parameters are omitted. CPX indices collected in recovery may provide additional insight regarding function, including strength. DESIGN AND METHODS We performed a cross-sectional controlled study. Systolic HF patients (aged ≥ 50 years) and age-matched controls were assessed using CPX and strength evaluations. Standard CPX indices were assessed during exercise (peak oxygen consumption [VO2], first ventilatory threshold [1stVT], and ventilatory efficiency [VE/VCO2 slope]) as well as indices at 1-minute recovery (1 min VO2, 1 min VE/VCO2, and 1 min heart rate recovery [HRR]) and differences between peak and 1-minute recovery (ΔVO₂ and ΔVE/VCO₂). Lower extremity strength was evaluated using the 1-repetition maximum (1RM) and power. RESULTS Seventy adults (31 HF; 39 controls), mean age 66.2 ± 9.7 years were evaluated. Peak VO2 (15.4 ± 4.2 versus 23.4 ± 6.6 mlO₂·kg(-1)·min(-1), p < 0.0001) and 1stVT (10.9 ± 2.1 versus 14.4 ± 4.0 mlO₂·kg(-1)·min(-1), p < 0.0001) were diminished in HF versus controls and VE/VCO2 slope was increased (42.3 ± 12.2 versus 35.4 ± 8.3, p < 0.01). HF patients had reduced 1 minVO₂ (13.1 ± 2.9 versus 16.3 ± 3.7 mlO₂·kg(-1)·min(-1), p < 0.0001), 1 min HRR (6.7 ± 11.4 versus 12.4 ± 7.6 beats, p < 0.02), and ΔVO₂ (2.43 ± 2.3 versus 7.3 ± 5.0 mlO₂·kg(-1)·min(-1), p < 0.0001) as well as increased 1 min VE/VCO2 (37 ± 7.5 versus 31.5 ± 4.4, p < 0.001) and ΔVE/VCO₂ (1.17 ± 3.0 versus -0.5 ± 1.3, p < 0.0001). Strength parameters were relatively lower in HF. While CPX exercise parameters correlated with strength, stronger correlations were observed between CPX recovery parameters and strength. CONCLUSIONS CPX recovery indices corroborate disease-specific aerobic differences and distinguish differences in strength. Recovery ventilatory efficiency enhances CPX's value as a comprehensive physical function tool.
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Affiliation(s)
- Alexandra Zavin
- New England Geriatric Research, Education, and Clinical Center, VA Boston Healthcare System, USA
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85
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Carvalho TD, Mara LSD, Ulbrich A. Reposição hormonal e exercício físico no tratamento da insuficiência cardíaca: revisão sistemática. REV BRAS MED ESPORTE 2011. [DOI: 10.1590/s1517-86922011000600013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
FUNDAMENTAÇÃO: A despeito do pleno uso da terapia farmacológica e não farmacológica, persistem as expressivas morbidade e mortalidade decorrentes da insuficiência cardíaca (IC). No contexto terapêutico é relevante a inibição das inadequadas adaptações neuro-hormonais e metabólicas, sendo bem conhecida a deficiência anabólica que se instala na IC. Mas somente recentemente surgiram alguns estudos sobre os benefícios que adviriam da terapia de reposição ou suplementação de testosterona (TRT). OBJETIVOS: Pesquisar estudos que abordem a TRT na insuficiência cardíaca (IC), em especial os desenvolvidos no cenário ideal de tratamento clínico, que inclui programa de exercício físico. MÉTODOS: Foram consultadas as bases de dados SciELO e PubMed, a base de dados Cochrane de Revisões Sistemáticas e o Registro de Ensaios Controlados da Colaboração Cochrane. RESULTADOS: Os poucos estudos sobre TRT em pacientes com IC evidenciaram melhora da função hemodinâmica, da resistência à insulina, da capacidade funcional e das respostas neuro-hormonal e neuromuscular, evidenciaram as controvérsias quanto à influência sobre o perfil inflamatório, e não constataram mudanças na função e na estrutura cardiovascular central. Entretanto, não foi encontrado nenhum estudo sobre TRT concomitante ao programa de exercícios físicos. CONCLUSÕES: O estágio atual de conhecimento, embora baseado em poucos estudos, permite considerar a TRT no tratamento de pacientes com IC. Não está bem definida a forma ideal da TRT, no que diz respeito à duração do tratamento, critérios de inclusão e exclusão etc. Existe uma grande lacuna na literatura, chamando atenção à inexistência de estudos sobre a TRT concomitante ao tratamento clínico pleno, que inclui um programa de exercícios físicos.
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Affiliation(s)
- Tales de Carvalho
- Universidade do Estado de Santa Catarina; Clínica de Prevenção e Reabilitação Cardiosport
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Abstract
Muscular fatigue and dyspnoea on exertion are among the most common symptoms in chronic heart failure; however their origin is still poorly understood. Several studies have shown that cardiac dysfunction alone cannot fully explain their origin, but the contribution of the multiorgan failure present in this syndrome must be highlighted. We aimed to summarize the existing evidence and the most controversial aspects of the complex interplay of different factors involved in the symptom generation. In the first part of the review, six key factors were revised (the heart, the lung, the skeletal muscle, the hormonal changes, the O2 delivery to the periphery, the endothelium). In this second part, the role of the excitatory reflexes and the cardiac cachexia are presented. Finally, potential therapeutic implications are discussed here. We believe that a better knowledge of the pathophysiology of this syndrome may contribute to the management of the patients and to the improvement in their stress tolerance and quality of life.
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Arena R, Sietsema KE. Cardiopulmonary exercise testing in the clinical evaluation of patients with heart and lung disease. Circulation 2011; 123:668-80. [PMID: 21321183 DOI: 10.1161/circulationaha.109.914788] [Citation(s) in RCA: 144] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ross Arena
- Department of Physical Therapy, Virginia Commonwealth University, Richmond Virginia 23298-0224, USA.
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88
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Keteyian SJ, Fleg JL, Brawner CA, Piña IL. Role and benefits of exercise in the management of patients with heart failure. Heart Fail Rev 2011; 15:523-30. [PMID: 20101456 DOI: 10.1007/s10741-009-9157-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Initial research established the feasibility of exercise training in patients with heart failure, as well as associated physiological benefits. This review summarizes the findings from over two dozen single-site studies that address the effect of exercise training on exercise capacity and cardiovascular and peripheral function. In addition, it incorporates the results from two meta-analyses and a recently completed multi-center trial, all of which studied the effects of exercise training on clinical outcomes. The major conclusions from these studies are that exercise training is safe; improves health status and exercise capacity; helps attenuate much of the abnormal pathophysiology that develops with heart failure; and yields a modest reduction in clinical events. The magnitude of the clinical benefits appears related to the volume of exercise completed. Future research is needed to identify which patient subgroups might benefit the most from exercise training, the optimal exercise dose or load needed to lessen disease-related symptoms and maximize clinical benefit, and the effects of exercise training in patients with heart failure and preserved left ventricular systolic function.
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Affiliation(s)
- Steven J Keteyian
- Department of Medicine, Henry Ford Hospital, 6525 Second Avenue, Detroit, MI 48202, USA.
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Jaussaud J, Blanc P, Bordachar P, Roudaut R, Douard H. Response to cardiac resynchronization therapy: the muscular metabolic pathway. Cardiol Res Pract 2010; 2011:830279. [PMID: 21197405 PMCID: PMC3010693 DOI: 10.4061/2011/830279] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Accepted: 11/23/2010] [Indexed: 12/21/2022] Open
Abstract
Background. Changes in peripheral muscle in heart failure lead to a shift from aerobic to early anaerobic metabolism during exercise leading to ergoreflex overactivation and exaggerated hyperventilation evaluated by the VE/VCO2 slope. Methods. 50 patients (38 males, 59 ± 12 years) performed cardio-pulmonary exercise test with gaz exchange measurement and echocardiographic evaluation before and 6 months after CRT. Results. The peak respiratory exchange (VCO2/ VO2) ratio was significantly reduced from 1.16 ± 0.14 to 1.11 ± 0.07 (P < .05) and the time to the anaerobic threshold was increased from 153 ± 82 to 245 ± 140 seconds (P = .01). Peak VO2, VE/VCO2, peak circulatory power and NYHA were improved after CRT (13 ± 4 to16 ± 5 ml/kg/min (P < .05), 45 ± 16 to 39 ± 13 (P < .01), 1805 ± 844 to 2225 ± 1171 mmHg.ml/kg/min (P < .01) and 3 ± 0.35 to 1.88 ± 0.4 (P = .01)). In addition, left ventricular ejection fraction and end-systolic volumes were improved from 24 ± 8 to 29 ± 7% (P < .01) and from 157 ± 69 to 122 ± 55 ml (P < .01). Conclusion. We suggest that CRT leads to an increase in oxidative muscular metabolism and postponed anaerobic threshold reducing exaggerated hyperventilation during exercise.
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Affiliation(s)
- Jérémie Jaussaud
- Division de Cardiologie Clinique, Hôpital Cardiologique, du Haut Lévêque, CHU de Bordeaux, Avenue Magellan, 33600 Pessac, France
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Iellamo F, Volterrani M, Caminiti G, Karam R, Massaro R, Fini M, Collins P, Rosano GMC. Testosterone therapy in women with chronic heart failure: a pilot double-blind, randomized, placebo-controlled study. J Am Coll Cardiol 2010; 56:1310-6. [PMID: 20888520 DOI: 10.1016/j.jacc.2010.03.090] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2009] [Revised: 02/17/2010] [Accepted: 03/02/2010] [Indexed: 02/01/2023]
Abstract
OBJECTIVES The primary objective of this study was to assess the effect of a 6-month testosterone supplementation therapy on functional capacity and insulin resistance in female patients with chronic heart failure (CHF). BACKGROUND Patients with CHF show decreased exercise capacity and insulin sensitivity. Testosterone supplementation improves these variables in men with CHF. No study has evaluated the effects of testosterone supplementation on female patients with CHF. METHODS Thirty-six elderly female patients with stable CHF, (ejection fraction 32.9 ± 6) were randomly assigned (2:1 ratio) to receive testosterone transdermal patch (T group, n = 24) or placebo (P group, n = 12), both on top of optimal medical therapy. At baseline and after 6 months, patients underwent 6-min walking test (6MWT), cardiopulmonary exercise test, echocardiogram, quadriceps maximal isometric voluntary contraction, dynamic quadriceps isokinetic strength (peak torque), and insulin resistance assessment by homeostasis model. RESULTS Distance walked at 6MWT as well as peak oxygen consumption significantly improved in the T group, whereas they were unchanged in the P group (p < 0.05 for all comparisons). The homeostasis model was significantly reduced in the T group in comparison with the P group (-16.5% vs. +5%, respectively; p < 0.05). Maximal voluntary contraction and peak torque increased significantly in the T group but did not change in the P group. Increase in distance walked at 6MWT was related to the increase in free testosterone levels (r = 0.593, p = 0.01). No significant changes in echocardiographic parameters were observed in either group. No side effects requiring discontinuation of T were detected. CONCLUSIONS Testosterone supplementation improves functional capacity, insulin resistance, and muscle strength in women with advanced CHF. Testosterone seems to be an effective and safe therapy for elderly women with CHF.
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Affiliation(s)
- Ferdinando Iellamo
- Department of Medical Sciences, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Roma, Roma, Italy.
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91
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Neuromuscular Electrical Stimulation and Inspiratory Muscle Training as Potential Adjunctive Rehabilitation Options for Patients With Heart Failure. J Cardiopulm Rehabil Prev 2010; 30:209-23. [DOI: 10.1097/hcr.0b013e3181c56b78] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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92
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Jaussaud J, Blanc P, Roudaut R, Douard H. [The ventilatory response in chronic heart failure population]. Ann Cardiol Angeiol (Paris) 2010; 59:138-143. [PMID: 20510916 DOI: 10.1016/j.ancard.2010.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Accepted: 04/06/2010] [Indexed: 05/29/2023]
Abstract
Symptom-limited exercise test with peak oxygen consumption measurement possesses a strong prognostic value in chronic heart failure. This parameter allowing notably the selection of patients for heart transplant. Nevertheless, sub maximal effort and beta blocker therapy tend to limit its prognostic value. The ventilatory response evaluated by the minute ventilation - carbon dioxide production (VE/VCO2) linear regression slope during effort is generally considered to be a significant predictor of mortality and hospitalizations in HF population. An enhanced ventilatory response is correlated with a poorer prognostic. In addition, this parameter is not influenced by the intensity of the effort neither by the betablocker therapy. But, physiological determinants are not clear yet. Aim of our study is to confirm the important place of the (VE/VCO2) slope in HF patient's evaluation.
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Affiliation(s)
- J Jaussaud
- Service de cardiologie et de réadaptation cardiaque, hôpital cardiologique, hôpital du Haut-Lévêque, CHU de Bordeaux, avenue Magellan, 33600 Pessac, France.
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Abstract
PURPOSE OF REVIEW Chronic heart failure (CHF) is a common condition with significant morbidity despite optimal medical therapy. Standard therapy involves inhibiting the maladaptive changes of metabolism and neuro-hormones that characterize the syndrome of CHF. Anabolic deficiency is a major component of the CHF syndrome and testosterone replacement therapy has been subject to recent trials. RECENT FINDINGS The recent literature shows that physiological testosterone replacement therapy leads to modest improvements in voluntary muscle strength, lean muscle mass, endurance and positive effects on neuro-muscular and baro-receptor reflexes. Long-term efficacy and safety remain unstudied at present. SUMMARY Testosterone replacement therapy appears to improve metabolism and endurance in patients with CHF; further trials will be necessary before widespread use. Physicians who regularly treat patients with CHF may consider testosterone therapy but it is likely that they will require the advice and support from endocrine specialists.
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Affiliation(s)
- Chris J Malkin
- Department of Cardiology Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
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Clinical Role of Exercise Training in the Management of Patients With Chronic Heart Failure. J Cardiopulm Rehabil Prev 2010; 30:67-76. [DOI: 10.1097/hcr.0b013e3181d0c1c1] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Caminiti G, Volterrani M, Iellamo F, Marazzi G, Massaro R, Miceli M, Mammi C, Piepoli M, Fini M, Rosano GMC. Effect of long-acting testosterone treatment on functional exercise capacity, skeletal muscle performance, insulin resistance, and baroreflex sensitivity in elderly patients with chronic heart failure a double-blind, placebo-controlled, randomized study. J Am Coll Cardiol 2009; 54:919-27. [PMID: 19712802 DOI: 10.1016/j.jacc.2009.04.078] [Citation(s) in RCA: 347] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Revised: 04/08/2009] [Accepted: 04/29/2009] [Indexed: 02/02/2023]
Abstract
OBJECTIVES This study investigated the effect of a 12-week long-acting testosterone administration on maximal exercise capacity, ventilatory efficiency, muscle strength, insulin resistance, and baroreflex sensitivity (BRS) in elderly patients with chronic heart failure (CHF). BACKGROUND CHF is characterized by a metabolic shift favoring catabolism and impairment in skeletal muscle bulk and function that could be involved in the pathophysiology of heart failure. METHODS Seventy elderly patients with stable CHF-median age 70 years, ejection fraction 31.8 +/- 7%-were randomly assigned to receive testosterone (n = 35, intramuscular injection every 6 weeks) or placebo (n = 35), both on top of optimal medical therapy. At baseline and at the end of the study, all patients underwent echocardiogram, cardiopulmonary exercise test, 6-min walk test (6MWT), quadriceps maximal voluntary contraction (MVC), and isokinetic strength (peak torque) and BRS assessment (sequences technique). RESULTS Baseline peak oxygen consumption (VO(2)) and quadriceps isometric strength showed a direct relation with serum testosterone concentration. Peak VO(2) significantly improved in testosterone but was unchanged in placebo. Insulin sensitivity was significantly improved in testosterone. The MVC and peak torque significantly increased in testosterone but not in placebo. The BRS significantly improved in testosterone but not in placebo. Increase in testosterone levels was significantly related to improvement in peak VO(2) and MVC. There were no significant changes in left ventricular function either in testosterone or placebo. CONCLUSIONS These results suggest that long-acting testosterone therapy improves exercise capacity, muscle strength, glucose metabolism, and BRS in men with moderately severe CHF. Testosterone benefits seem to be mediated by metabolic and peripheral effects.
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Affiliation(s)
- Giuseppe Caminiti
- Centre for Clinical and Basic Research, Cardiovascular Research Unit, Department of Medical Sciences, IRCCS San Raffaele Pisana, Rome, Italy
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Akaishi S, Adachi H, Oshima S, Taniguchi K, Hasegawa A, Kurabayashi M. Relationship between exercise tolerance and TV vs. RR relationship in patients with heart disease. J Cardiol 2008; 52:195-201. [DOI: 10.1016/j.jjcc.2008.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Revised: 05/12/2008] [Accepted: 06/25/2008] [Indexed: 11/30/2022]
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Carruthers M, Trinick TR, Jankowska E, Traish AM. Are the adverse effects of glitazones linked to induced testosterone deficiency? Cardiovasc Diabetol 2008; 7:30. [PMID: 18922158 PMCID: PMC2576082 DOI: 10.1186/1475-2840-7-30] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Accepted: 10/15/2008] [Indexed: 12/13/2022] Open
Abstract
Background Adverse side-effects of the glitazones have been frequently reported in both clinical and animal studies, especially with rosiglitazone (RGZ) and pioglitazone (PGZ), including congestive heart failure, osteoporosis, weight gain, oedema and anaemia. These led to consideration of an evidence-based hypothesis which would explain these diverse effects, and further suggested novel approaches by which this hypothesis could be tested. Presentation of hypothesis The literature on the clinical, metabolic and endocrine effects of glitazones in relation to the reported actions of testosterone in diabetes, metabolic syndrome, and cardiovascular disease is reviewed, and the following unifying hypothesis advanced: "Glitazones induce androgen deficiency in patients with Type 2 Diabetes Mellitus resulting in pathophysiological changes in multiple tissues and organs which may explain their observed clinical adverse effects." This also provides further evidence for the lipocentric concept of diabetes and its clinical implications. Testing of the hypothesis Clinical studies to investigate the endocrine profiles, including measurements of TT, DHT, SHBG, FT and estradiol, together with LH and FSH, in both men and women with T2DM before and after RGZ and PGZ treatment in placebo controlled groups, are necessary to provide data to substantiate this hypothesis. Also, studies on T treatment in diabetic men would further establish if the adverse effects of glitazones could be reversed or ameliorated by androgen therapy. Basic sciences investigations on the inhibition of androgen biosynthesis by glitazones are also warranted. Implications of the hypothesis Glitazones reduce androgen biosynthesis, increase their binding to SHBG, and attenuate androgen receptor activation, thus reducing the physiological actions of testosterone, causing relative and absolute androgen deficiency. This hypothesis explains the adverse effects of glitazones on the heart and other organs resulting from reversal of the action of androgens in directing the maturation of stem cells towards muscle, vascular endothelium, erythroid stem cells and osteoblasts, and away from adipocyte differentiation. The higher incidence of side-effects with RGZ than PGZ, may be explained by a detailed study of the mechanism by which glitazones down-regulate androgen biosynthesis and action, resulting in a state of androgen deficiency.
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Affiliation(s)
- M Carruthers
- Centre for Men's Health, 20/20 Harley Street, London, UK.
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