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Taylor JA, Greenhaff PL, Bartlett DB, Jackson TA, Duggal NA, Lord JM. Multisystem physiological perspective of human frailty and its modulation by physical activity. Physiol Rev 2023; 103:1137-1191. [PMID: 36239451 PMCID: PMC9886361 DOI: 10.1152/physrev.00037.2021] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
"Frailty" is a term used to refer to a state characterized by enhanced vulnerability to, and impaired recovery from, stressors compared with a nonfrail state, which is increasingly viewed as a loss of resilience. With increasing life expectancy and the associated rise in years spent with physical frailty, there is a need to understand the clinical and physiological features of frailty and the factors driving it. We describe the clinical definitions of age-related frailty and their limitations in allowing us to understand the pathogenesis of this prevalent condition. Given that age-related frailty manifests in the form of functional declines such as poor balance, falls, and immobility, as an alternative we view frailty from a physiological viewpoint and describe what is known of the organ-based components of frailty, including adiposity, the brain, and neuromuscular, skeletal muscle, immune, and cardiovascular systems, as individual systems and as components in multisystem dysregulation. By doing so we aim to highlight current understanding of the physiological phenotype of frailty and reveal key knowledge gaps and potential mechanistic drivers of the trajectory to frailty. We also review the studies in humans that have intervened with exercise to reduce frailty. We conclude that more longitudinal and interventional clinical studies are required in older adults. Such observational studies should interrogate the progression from a nonfrail to a frail state, assessing individual elements of frailty to produce a deep physiological phenotype of the syndrome. The findings will identify mechanistic drivers of frailty and allow targeted interventions to diminish frailty progression.
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Affiliation(s)
- Joseph A Taylor
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom
| | - Paul L Greenhaff
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom.,NIHR Nottingham Biomedical Research Centre, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom
| | - David B Bartlett
- Division of Medical Oncology, Department of Medicine, Duke University, Durham, North Carolina.,Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Thomas A Jackson
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, https://ror.org/03angcq70University of Birmingham, Birmingham, United Kingdom
| | - Niharika A Duggal
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, https://ror.org/03angcq70University of Birmingham, Birmingham, United Kingdom
| | - Janet M Lord
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, https://ror.org/03angcq70University of Birmingham, Birmingham, United Kingdom.,NIHR Birmingham Biomedical Research Centre, University Hospital Birmingham and University of Birmingham, Birmingham, United Kingdom
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2
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Salaffi F, Carotti M, Di Matteo A, Ceccarelli L, Farah S, Villota-Eraso C, Di Carlo M, Giovagnoni A. Ultrasound and magnetic resonance imaging as diagnostic tools for sarcopenia in immune-mediated rheumatic diseases (IMRDs). Radiol Med 2022; 127:1277-1291. [DOI: 10.1007/s11547-022-01560-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/12/2022] [Indexed: 01/10/2023]
Abstract
AbstractSarcopenia is characterized by loss of muscle mass, altered muscle composition, fat and fibrous tissue infiltration, and abnormal innervation, especially in older individuals with immune-mediated rheumatic diseases (IMRDs). Several techniques for measuring muscle mass, strength, and performance have emerged in recent decades. The portable dynamometer and gait speed represent the most frequently used tools for the evaluation of muscle strength and physical efficiency, respectively. Aside from dual-energy, X-ray, absorptiometry, and bioelectrical impedance analysis, ultrasound (US) and magnetic resonance imaging (MRI) techniques appear to have a potential role in evaluating muscle mass and composition. US and MRI have been shown to accurately identify sarcopenic biomarkers such as inflammation (edema), fatty infiltration (myosteatosis), alterations in muscle fibers, and muscular atrophy in patients with IMRDs. US is a low-cost, easy-to-use, and safe imaging method for assessing muscle mass, quality, architecture, and biomechanical function. This review summarizes the evidence for using US and MRI to assess sarcopenia.
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Perazza LR, Brown-Borg HM, Thompson LV. Physiological Systems in Promoting Frailty. Compr Physiol 2022; 12:3575-3620. [PMID: 35578945 DOI: 10.1002/cphy.c210034] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Frailty is a complex syndrome affecting a growing sector of the global population as medical developments have advanced human mortality rates across the world. Our current understanding of frailty is derived from studies conducted in the laboratory as well as the clinic, which have generated largely phenotypic information. Far fewer studies have uncovered biological underpinnings driving the onset and progression of frailty, but the stage is set to advance the field with preclinical and clinical assessment tools, multiomics approaches together with physiological and biochemical methodologies. In this article, we provide comprehensive coverage of topics regarding frailty assessment, preclinical models, interventions, and challenges as well as clinical frameworks and prevalence. We also identify central biological mechanisms that may be at play including mitochondrial dysfunction, epigenetic alterations, and oxidative stress that in turn, affect metabolism, stress responses, and endocrine and neuromuscular systems. We review the role of metabolic syndrome, insulin resistance and visceral obesity, focusing on glucose homeostasis, adenosine monophosphate-activated protein kinase (AMPK), mammalian target of rapamycin (mTOR), and nicotinamide adenine dinucleotide (NAD+ ) as critical players influencing the age-related loss of health. We further focus on how immunometabolic dysfunction associates with oxidative stress in promoting sarcopenia, a key contributor to slowness, weakness, and fatigue. We explore the biological mechanisms involved in stem cell exhaustion that affect regeneration and may contribute to the frailty-associated decline in resilience and adaptation to stress. Together, an overview of the interplay of aging biology with genetic, lifestyle, and environmental factors that contribute to frailty, as well as potential therapeutic targets to lower risk and slow the progression of ongoing disease is covered. © 2022 American Physiological Society. Compr Physiol 12:1-46, 2022.
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Affiliation(s)
- Laís R Perazza
- Department of Physical Therapy and Athletic Training, Boston University, Boston, Massachusetts, USA
| | - Holly M Brown-Borg
- Department of Biomedical Sciences, University of North Dakota, Grand Forks, North Dakota, USA
| | - LaDora V Thompson
- Department of Physical Therapy and Athletic Training, Boston University, Boston, Massachusetts, USA
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4
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Chianca V, Albano D, Messina C, Gitto S, Ruffo G, Guarino S, Del Grande F, Sconfienza LM. Sarcopenia: imaging assessment and clinical application. Abdom Radiol (NY) 2022; 47:3205-3216. [PMID: 34687326 PMCID: PMC8536908 DOI: 10.1007/s00261-021-03294-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 02/06/2023]
Abstract
Sarcopenia is a progressive, generalized skeletal muscle disorder characterized by reduction of muscle mass and strength. It is associated with increased adverse outcomes including falls, fractures, physical disability, and mortality, particularly, in elderly patients. Nowadays, sarcopenia has become a specific imaging biomarker able to predict clinical outcomes of patients. Muscle fibre reduction has shown to be an unfavourable pre-operative predictive factor in patients with cancer, and is associated with worse clinical outcomes in terms of postoperative complications, morbidity, mortality, and lower tolerance of chemoradiation therapy. Several imaging modalities, including dual-energy X-ray absorptiometry, CT, MRI, and US can be used to estimate muscle mass and quality to reach the diagnosis of sarcopenia. This article reviews the clinical implications of sarcopenia, how this condition can be assessed through different imaging modalities, and future perspectives of imaging of sarcopenia.
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Affiliation(s)
- Vito Chianca
- Clinica di Radiologia EOC IIMSI, Lugano, Switzerland ,Ospedale Evangelico Betania, Napoli, Italy
| | - Domenico Albano
- grid.417776.4IRCCS Istituto Ortopedico Galeazzi, Milano, Italy ,grid.10776.370000 0004 1762 5517Sezione di Scienze Radiologiche, Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università degli Studi di Palermo, Palermo, Italy
| | - Carmelo Messina
- grid.417776.4IRCCS Istituto Ortopedico Galeazzi, Milano, Italy
| | - Salvatore Gitto
- grid.4708.b0000 0004 1757 2822Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, Italy
| | - Gaetano Ruffo
- grid.417776.4IRCCS Istituto Ortopedico Galeazzi, Milano, Italy
| | | | | | - Luca Maria Sconfienza
- IRCCS Istituto Ortopedico Galeazzi, Milano, Italy. .,Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milano, Italy.
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Loubrie S, Trotier A, Ribot E, Massot P, Lefrançois W, Thiaudière E, Dallaudière B, Miraux S, Bourdel-Marchasson I. New setup for multi-parametric MRI in young and old rat gastrocnemius at 4.7 and 7 T during muscle stimulation. NMR IN BIOMEDICINE 2022; 35:e4620. [PMID: 34585794 DOI: 10.1002/nbm.4620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
T1 and T2 relaxation times combined with 31 P spectroscopy have been proven efficient for muscular disease characterization as well as for pre- and post-muscle stimulation measurements. Even though 31 P spectroscopy can already be performed during muscle exercise, no method for T1 and T2 measurement enables this possibility. In this project, a complete setup and protocol for multi-parametrical MRI of the rat gastrocnemius before, during and after muscle stimulation at 4.7 and 7 T is presented. The setup is fully MRI compatible and is composed of a cradle, an electro-stimulator and an electronic card in order to synchronize MRI sequences with muscle stimulation. A 2D triggered radial-encoded Look-Locker sequence was developed, and enabled T1 measurements in less than 2 min on stimulated muscle. Also, a multi-slice multi-echo sequence was adapted and synchronized for T2 measurements as well as 31 P spectroscopy acquisitions in less than 4 min in both cases on stimulated muscle. Methods were validated on young rats using different stimulation paradigms. Then they were applied on older rats to compare quantification results, using the different stimulation paradigms, and allowed observation of metabolic changes related to aging with good reproducibility. The robustness of the whole setup shows wide application opportunities.
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Affiliation(s)
- Stéphane Loubrie
- Centre de Résonance Magnétique des Systèmes Biologiques (CRMSB)-UMR 5536 CNRS/Université de Bordeaux, Bordeaux, France
| | - Aurelien Trotier
- Centre de Résonance Magnétique des Systèmes Biologiques (CRMSB)-UMR 5536 CNRS/Université de Bordeaux, Bordeaux, France
| | - Emeline Ribot
- Centre de Résonance Magnétique des Systèmes Biologiques (CRMSB)-UMR 5536 CNRS/Université de Bordeaux, Bordeaux, France
| | - Philippe Massot
- Centre de Résonance Magnétique des Systèmes Biologiques (CRMSB)-UMR 5536 CNRS/Université de Bordeaux, Bordeaux, France
| | - William Lefrançois
- Centre de Résonance Magnétique des Systèmes Biologiques (CRMSB)-UMR 5536 CNRS/Université de Bordeaux, Bordeaux, France
| | - Eric Thiaudière
- Centre de Résonance Magnétique des Systèmes Biologiques (CRMSB)-UMR 5536 CNRS/Université de Bordeaux, Bordeaux, France
| | - Benjamin Dallaudière
- Centre de Résonance Magnétique des Systèmes Biologiques (CRMSB)-UMR 5536 CNRS/Université de Bordeaux, Bordeaux, France
- Centre d'Imagerie Ostéo-articulaire, Clinique du Sport de Bordeaux-Mérignac, Mérignac, France
| | - Sylvain Miraux
- Centre de Résonance Magnétique des Systèmes Biologiques (CRMSB)-UMR 5536 CNRS/Université de Bordeaux, Bordeaux, France
| | - Isabelle Bourdel-Marchasson
- Centre de Résonance Magnétique des Systèmes Biologiques (CRMSB)-UMR 5536 CNRS/Université de Bordeaux, Bordeaux, France
- Pôle de gérontologie clinique, CHU de Bordeaux, Bordeaux, France
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6
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Lewsey SC, Weiss K, Schär M, Zhang Y, Bottomley PA, Samuel TJ, Xue QL, Steinberg A, Walston JD, Gerstenblith G, Weiss RG. Exercise intolerance and rapid skeletal muscle energetic decline in human age-associated frailty. JCI Insight 2020; 5:141246. [PMID: 32941181 PMCID: PMC7605538 DOI: 10.1172/jci.insight.141246] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 09/09/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Physical frailty in older individuals is characterized by subjective symptoms of fatigue and exercise intolerance (EI). Objective abnormalities in skeletal muscle (SM) mitochondrial high-energy phosphate (HEP) metabolism contribute to EI in inherited myopathies; however, their presence or link to EI in the frail older adult is unknown. METHODS Here, we studied 3 groups of ambulatory, community-dwelling adults with no history of significant coronary disease: frail older (FO) individuals (81 ± 2.7 years, mean ± SEM), nonfrail older (NFO) individuals (79 ± 2.0 years), and healthy middle-aged individuals, who served as controls (CONT, 51 ± 2.1 years). Lower extremity SM HEP levels and mitochondrial function were measured with 31P magnetic resonance (MR) techniques during graded multistage plantar flexion exercise (PFE). EI was quantified by a 6-minute walk (6MW) and peak oxygen consumption during cardiopulmonary testing (peak VO2). RESULTS During graded exercise, FO, NFO, and CONT individuals all fatigued at similar SM HEP levels, as measured by 31P-MR. However, FO individuals fatigued fastest, with several-fold higher rates of PFE-induced HEP decline that correlated closely with shorter exercise duration in the MR scanner and with 6MW distance and lower peak oxygen consumption on cardiopulmonary testing (P < 0.001 for all). SM mitochondrial oxidative capacity was lower in older individuals and correlated with rapid HEP decline but less closely with EI. CONCLUSION Several-fold faster SM energetic decline during exercise occurs in FO individuals and correlates closely with multiple measures of EI. Rapid energetic decline represents an objective, functional measure of SM metabolic changes and a potential new target for mitigating frailty-associated physical limitations. FUNDING This work was supported by NIH R21 AG045634, R01 AG063661, R01 HL61912, the Johns Hopkins University Claude D. Pepper Older Americans Independence Center P30AG021334, and the Clarence Doodeman Endowment in Cardiology at Johns Hopkins. Rapid exercise-induced skeletal muscle high-energy phosphate decline occurs in frail, older individuals and is closely linked to exercise intolerance and fatigue.
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Affiliation(s)
| | - Kilian Weiss
- Division of Cardiology, Department of Medicine, and.,Division of Magnetic Resonance Research, Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Philips Healthcare Germany, Hamburg, Germany
| | - Michael Schär
- Division of Magnetic Resonance Research, Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yi Zhang
- Division of Magnetic Resonance Research, Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang, China
| | - Paul A Bottomley
- Division of Magnetic Resonance Research, Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Qian-Li Xue
- Divison of Geriatric Medicine and Gerontology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Jeremy D Walston
- Divison of Geriatric Medicine and Gerontology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Albano D, Messina C, Vitale J, Sconfienza LM. Imaging of sarcopenia: old evidence and new insights. Eur Radiol 2019; 30:2199-2208. [PMID: 31834509 DOI: 10.1007/s00330-019-06573-2] [Citation(s) in RCA: 192] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/31/2019] [Accepted: 11/04/2019] [Indexed: 12/12/2022]
Abstract
To date, sarcopenia is considered a patient-specific imaging biomarker able to predict clinical outcomes. Several imaging modalities, including dual-energy X-ray absorptiometry (DXA), computed tomography (CT), magnetic resonance (MR), and ultrasound (US), can be used to assess muscle mass and quality and to achieve the diagnosis of sarcopenia. With different extent, all these modalities can provide quantitative data, being thus reproducible and comparable over time. DXA is the one most commonly used in clinical practice, with the advantages of being accurate and widely available, and also being the only radiological tool with accepted cutoff values to diagnose sarcopenia. CT and MR are considered the reference standards, allowing the evaluation of muscle quality and fatty infiltration, but their application is so far mostly limited to research. US has been always regarded as a minor tool in sarcopenia and has never gained enough space. To date, CT is probably the easiest and most promising modality, although limited by the long time needed for muscle segmentation. Also, the absence of validated thresholds for CT measurements of myosteatosis requires that future studies should focus on this point. Radiologists have the great potential of becoming pivotal in the context of sarcopenia. We highly master imaging modalities and know perfectly how to apply them to different organs and clinical scenarios. Similarly, radiologists should master the culture of sarcopenia, and its clinical aspects and relevant implications for patient care. The medical and scientific radiological community should promote specific educational course to spread awareness among professionals. KEY POINTS: • DXA is an accurate, reproducible, and widely available imaging modality to evaluate body composition, being the most commonly used radiological tool to diagnose sarcopenia in clinical practice • CT and MR are the gold standard imaging modalities to assess muscle mass and quality, but no clear cutoff values have been reported to identify sarcopenia, limiting the application of these modalities to research purposes • US has shown to be accurate in the evaluation of muscle trophism, especially in the thigh, but its current application in sarcopenia is limited.
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Affiliation(s)
- Domenico Albano
- IRCCS Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161, Milan, Italy
- Sezione di Scienze Radiologiche, Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università degli Studi di Palermo, 90127, Palermo, Italy
| | - Carmelo Messina
- IRCCS Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161, Milan, Italy
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, 20122, Milan, Italy
| | - Jacopo Vitale
- IRCCS Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161, Milan, Italy
| | - Luca Maria Sconfienza
- IRCCS Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161, Milan, Italy.
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, 20122, Milan, Italy.
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8
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Codari M, Zanardo M, di Sabato ME, Nocerino E, Messina C, Sconfienza LM, Sardanelli F. MRI-Derived Biomarkers Related to Sarcopenia: A Systematic Review. J Magn Reson Imaging 2019; 51:1117-1127. [PMID: 31515891 DOI: 10.1002/jmri.26931] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/13/2019] [Accepted: 08/15/2019] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND MRI allows quantitatively assessing muscle quantity and quality. PURPOSE To summarize the role of MRI as a noninvasive technique for the identification of in vivo surrogate biomarker of sarcopenia. STUDY TYPE Systematic review. POPULATION In April 2019, a systematic literature search (Medline/EMBASE) was performed to identify articles on the topic at issue. FIELD STRENGTH/SEQUENCE No field strength or sequence restrictions. ASSESSMENT After a literature search, study design, aim, sample size, demographics, magnetic field strength, imaged body region, MRI sequences, and imaging biomarker were extracted. STATISTICAL TESTS Data are presented as frequencies and percentages. RESULTS From 69 records identified through search query, 18 articles matched the inclusion criteria. All articles were published from 2012 and had a mainly prospective design (14/18, 78%). Sample size ranged from 9 to 284 subjects, for a total of 1706 enrolled subjects. Healthy subjects were enrolled or retrospectively selected in 8/18 (44%) articles, corresponding to 658 (39%) healthy subjects. Magnetic field strength was 1.5 or 3T in 14/18 (78%) studies. The most analyzed body regions were the thigh (7/18, 39%) and the trunk (6/18, 33%). Stratifying studies according to their aim, 13/18 (72%) studies focused on muscle quality and quantity, 3/18 (17%) studies on outcome prediction, and 2/18 articles (11%) addressed both aims. A wide set of MRI biomarkers have been proposed. Muscle cross-sectional area was the most used for muscle quantity estimation, while quantitative biomarkers of muscle fat content or fiber architecture were proposed to assess muscle quality. DATA CONCLUSION The proposed biomarkers were assessed using different MRI sequences for different body regions in different subjects/patient cohorts, pointing out a lack of standardization on this topic. Future studies should test and compare the performance of proposed MRI biomarkers for sarcopenia characterization and quantification using a standardized experimental setup. LEVEL OF EVIDENCE 1 Technical Efficacy Stage: 2 J. Magn. Reson. Imaging 2020;51:1117-1127.
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Affiliation(s)
- Marina Codari
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milano, Italy
| | - Moreno Zanardo
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy
| | | | | | - Carmelo Messina
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy.,IRCCS Istituto Ortopedico Galeazzi, Milano, Italy
| | - Luca Maria Sconfienza
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy.,IRCCS Istituto Ortopedico Galeazzi, Milano, Italy
| | - Francesco Sardanelli
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy.,Unit of Radiology, IRCCS Policlinico San Donato, San Donato Milanese, Italy
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Yoon MA, Hong SJ, Ku MC, Kang CH, Ahn KS, Kim BH. Multiparametric MR Imaging of Age-related Changes in Healthy Thigh Muscles. Radiology 2018; 287:235-246. [DOI: 10.1148/radiol.2017171316] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Min A Yoon
- From the Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul 08308, Republic of Korea (M.A.Y., S.J.H., M.C.K.); Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea (C.H.K., K.S.A.); Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea (B.H.K.)
| | - Suk-Joo Hong
- From the Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul 08308, Republic of Korea (M.A.Y., S.J.H., M.C.K.); Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea (C.H.K., K.S.A.); Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea (B.H.K.)
| | - Min Cheol Ku
- From the Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul 08308, Republic of Korea (M.A.Y., S.J.H., M.C.K.); Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea (C.H.K., K.S.A.); Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea (B.H.K.)
| | - Chang Ho Kang
- From the Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul 08308, Republic of Korea (M.A.Y., S.J.H., M.C.K.); Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea (C.H.K., K.S.A.); Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea (B.H.K.)
| | - Kyung-Sik Ahn
- From the Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul 08308, Republic of Korea (M.A.Y., S.J.H., M.C.K.); Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea (C.H.K., K.S.A.); Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea (B.H.K.)
| | - Baek Hyun Kim
- From the Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul 08308, Republic of Korea (M.A.Y., S.J.H., M.C.K.); Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea (C.H.K., K.S.A.); Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, Gyeonggi-do, Republic of Korea (B.H.K.)
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10
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Rosenthal DI, Kransdorf M, Astrom G. Skeletal Radiology: the year in review 2016. Skeletal Radiol 2017; 46:295-298. [PMID: 28012122 DOI: 10.1007/s00256-016-2556-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 12/13/2016] [Indexed: 02/02/2023]
Abstract
A look back at Skeletal Radiology in 2016 reveals a sizable number of publications that significantly advanced the state of knowledge about diseases of the musculoskeletal system. This review summarizes the content of some of the most intriguing papers of the year.
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Affiliation(s)
- Daniel I Rosenthal
- Department of Radiology Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
| | | | - Gunnar Astrom
- Department of Surgical Sciences, Radiology, Uppsala, Sweden
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11
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Wong AKO. A Comparison of Peripheral Imaging Technologies for Bone and Muscle Quantification: a Mixed Methods Clinical Review. Curr Osteoporos Rep 2016; 14:359-373. [PMID: 27796924 DOI: 10.1007/s11914-016-0334-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
PURPOSE OF REVIEW Bone and muscle peripheral imaging technologies are reviewed for their association with fractures and frailty. A narrative systematized review was conducted for bone and muscle parameters from each imaging technique. In addition, meta-analyses were performed across all bone quality parameters. RECENT FINDINGS The current body of evidence for bone quality's association with fractures is strong for (high-resolution) peripheral quantitative computed tomography (pQCT), with trabecular separation (Tb.Sp) and integral volumetric bone mineral density (vBMD) reporting consistently large associations with various fracture types across studies. Muscle has recently been linked to fractures and frailty, but the quality of evidence remains weaker from studies of small sample sizes. It is increasingly apparent that musculoskeletal tissues have a complex relationship with interrelated clinical endpoints such as fractures and frailty. Future studies must concurrently address these relationships in order to decipher the relative importance of one causal pathway from another.
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Affiliation(s)
- Andy Kin On Wong
- Joint Department of Medical Imaging, Toronto General Research Institute, University Health Network, Toronto General Hospital, 200 Elizabeth St. 7EN-238, Toronto, ON, M5G 2C4, Canada.
- McMaster University, Department of Medicine, Faculty of Health Sciences, Hamilton, ON, Canada.
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Society of Skeletal Radiology 2015 annual meeting summary. Skeletal Radiol 2016; 45:3-7. [PMID: 26338070 DOI: 10.1007/s00256-015-2245-y] [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: 08/13/2015] [Accepted: 08/20/2015] [Indexed: 02/02/2023]
Abstract
Peer-reviewed abstracts presented at the 2015 Society of Skeletal Radiology (SSR) 38th Annual Meeting were reviewed following oral presentation. Topics felt to be of potential interest to musculoskeletal (MSK) investigators and practicing clinicians are highlighted in this compilation and analysis of the meeting. New concepts regarding MSK imaging and intervention, MSK protocols and techniques, and quality improvement are included. ePoster highlights are also presented.
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