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Wahidi R, Zhang Y, Li R, Xu J, Zayed MA, Hastings MK, Zheng J. Quantitative Assessment of Peripheral Oxidative Metabolism With a New Dynamic 1H MRI Technique: A Pilot Study in People With and Without Diabetes Mellitus. J Magn Reson Imaging 2024; 59:2091-2100. [PMID: 37695103 PMCID: PMC10925551 DOI: 10.1002/jmri.28996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 08/19/2023] [Accepted: 08/23/2023] [Indexed: 09/12/2023] Open
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is linked to impaired mitochondrial function. Chemical exchange saturation transfer (CEST) magnetic resonance imaging (MRI) is a gadolinium-contrast-free 1H method to assess mitochondrial function by measuring low-concentration metabolites. A CEST MRI-based technique may serve as a non-invasive proxy for assessing mitochondrial health. HYPOTHESIS A 1H CEST MRI technique may detect significant differences in in vivo skeletal muscle phosphocreatine (SMPCr) kinetics between healthy volunteers and T2DM patients undergoing standardized isometric exercise. STUDY TYPE Cross-sectional study. SUBJECTS Seven subjects without T2DM (T2DM-) and seven age, sex, and BMI-matched subjects with T2DM (T2DM+). FIELD STRENGTH/SEQUENCE Single-shot rapid acquisition with refocusing echoes (RARE) and single-shot gradient-echo sequences, 3 T. ASSESSMENT Subjects underwent a rest-exercise-recovery imaging protocol to dynamically acquire SMPCr maps in calf musculature. Medial gastrocnemius (MG) and soleus SMPCr concentrations were plotted over time, and SMPCr recovery time, τ , was determined. Mitochondrial function index was calculated as the ratio of resting SMPCr to τ . Participants underwent a second exercise protocol for imaging of skeletal muscle blood flow (SMBF), and its association with SMPCr was assessed. STATISTICAL TESTS Unpaired t-tests and Pearson correlation coefficient. A P value <0.05 was considered statistically significant. RESULTS SMPCr concentrations in MG and soleus displayed expected declines during exercise and returns to baseline during recovery. τ was significantly longer in the T2DM+ cohort (MG 83.5 ± 25.8 vs. 54.0 ± 21.1, soleus 90.5 ± 18.9 vs. 51.2 ± 14.5). The mitochondrial function index in the soleus was significantly lower in the T2DM+ cohort (0.33 ± 0.08 vs. 0.66 ± 0.19). SMBF was moderately correlated with the SMPCr in T2DM-; this correlation was not significant in T2DM+ (r = -0.23, P = 0.269). CONCLUSION The CEST MRI method is feasible for quantifying SMPCr in peripheral muscle tissue. T2DM+ individuals had significantly lower oxidative capacities than T2DM- individuals. In T2DM, skeletal muscle metabolism appeared to be decoupled from perfusion. LEVEL OF EVIDENCE 1 TECHNICAL EFFICACY: Stage 1.
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Affiliation(s)
- Ryan Wahidi
- Washington University School of Medicine, Missouri, Saint Louis, USA
| | - Yi Zhang
- Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ran Li
- Washington University School of Medicine, Missouri, Saint Louis, USA
| | - Jiadi Xu
- John Hopkins University, Baltimore, MD, USA
| | - Mohamed A. Zayed
- Washington University School of Medicine, Missouri, Saint Louis, USA
| | - Mary K. Hastings
- Washington University School of Medicine, Missouri, Saint Louis, USA
| | - Jie Zheng
- Washington University School of Medicine, Missouri, Saint Louis, USA
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Bartlett MF, Fitzgerald LF, Nagarajan R, Kent JA. Measurements of in vivo skeletal muscle oxidative capacity are lower following sustained isometric compared with dynamic contractions. Appl Physiol Nutr Metab 2024; 49:250-264. [PMID: 37906958 DOI: 10.1139/apnm-2023-0315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Human skeletal muscle oxidative capacity can be quantified non-invasively using 31-phosphorus magnetic resonance spectroscopy (31P-MRS) to measure the rate constant of phosphocreatine (PCr) recovery (kPCr) following contractions. In the quadricep muscles, several studies have quantified kPCr following 24-30 s of sustained maximal voluntary isometric contraction (MVIC). This approach has the advantage of simplicity but is potentially problematic because sustained MVICs inhibit perfusion, which may limit muscle oxygen availability or increase the intracellular metabolic perturbation, and thus affect kPCr. Alternatively, dynamic contractions allow reperfusion between contractions, which may avoid limitations in oxygen delivery. To determine whether dynamic contraction protocols elicit greater kPCr than sustained MVIC protocols, we used a cross-sectional design to compare quadriceps kPCr in 22 young and 11 older healthy adults following 24 s of maximal voluntary: (1) sustained MVIC and (2) dynamic (MVDC; 120°·s-1, 1 every 2 s) contractions. Muscle kPCr was ∼20% lower following the MVIC protocol compared with the MVDC protocol (p ≤ 0.001), though this was less evident in older adults (p = 0.073). Changes in skeletal muscle pH (p ≤ 0.001) and PME accumulation (p ≤ 0.001) were greater following the sustained MVIC protocol, and pH (p ≤ 0.001) and PME (p ≤ 0.001) recovery were slower. These results demonstrate that (i) a brief, sustained MVIC yields a lower value for skeletal muscle oxidative capacity than an MVDC protocol of similar duration and (ii) this difference may not be consistent across populations (e.g., young vs. old). Thus, the potential effect of contraction protocol on comparisons of kPCr in different study groups requires careful consideration in the future.
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Affiliation(s)
- Miles F Bartlett
- Department of KinesiologyMuscle Physiology Laboratory, University of Massachusetts Amherst, MA 01003, USA
| | - Liam F Fitzgerald
- Department of KinesiologyMuscle Physiology Laboratory, University of Massachusetts Amherst, MA 01003, USA
| | - Rajakumar Nagarajan
- Human Magnetic Resonance Center, Institute for Applied Life Sciences (IALS), University of Massachusetts Amherst, MA 01003, USA
| | - Jane A Kent
- Department of KinesiologyMuscle Physiology Laboratory, University of Massachusetts Amherst, MA 01003, USA
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Gonsalves SG, Saligan LN, Bergeron CM, Lee PR, Fishbein KW, Spencer RG, Zampino M, Sun X, Sheng JYS, Stearns V, Carducci M, Ferrucci L, Lukkahatai N. Exploring the links of skeletal muscle mitochondrial oxidative capacity, physical functionality, and mental well-being of cancer survivors. Sci Rep 2024; 14:2669. [PMID: 38302539 PMCID: PMC10834492 DOI: 10.1038/s41598-024-52570-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/20/2024] [Indexed: 02/03/2024] Open
Abstract
Physical impairments following cancer treatment have been linked with the toxic effects of these treatments on muscle mass and strength, through their deleterious effects on skeletal muscle mitochondrial oxidative capacity. Accordingly, we designed the present study to explore relationships of skeletal muscle mitochondrial oxidative capacity with physical performance and perceived cancer-related psychosocial experiences of cancer survivors. We assessed skeletal muscle mitochondrial oxidative capacity using in vivo phosphorus-31 magnetic resonance spectroscopy (31P MRS), measuring the postexercise phosphocreatine resynthesis time constant, τPCr, in 11 post-chemotherapy participants aged 34-70 years. During the MRS procedure, participants performed rapid ballistic knee extension exercise to deplete phosphocreatine (PCr); hence, measuring the primary study outcome, which was the recovery rate of PCr (τPCr). Patient-reported outcomes of psychosocial symptoms and well-being were assessed using the Patient-Reported Outcomes Measurement Information System and the 36-Item Short Form health survey (SF-36). Rapid bioenergetic recovery, reflected through a smaller value of τPCr was associated with worse depression (rho ρ = - 0.69, p = 0.018, and Cohen's d = - 1.104), anxiety (ρ = - 0.61, p = .046, d = - 0.677), and overall mental health (ρ = 0.74, p = 0.010, d = 2.198) scores, but better resilience (ρ = 0.65, p = 0.029), and coping-self efficacy (ρ = 0.63, p = 0.04) scores. This is the first study to link skeletal muscle mitochondrial oxidative capacity with subjective reports of cancer-related behavioral toxicities. Further investigations are warranted to confirm these findings probing into the role of disease status and personal attributes in these preliminary results.
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Affiliation(s)
- Stephen G Gonsalves
- National Institute of Nursing Research, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Leorey N Saligan
- National Institute of Nursing Research, National Institutes of Health, Bethesda, MD, 20892, USA.
| | - Christopher M Bergeron
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute On Aging, National Institutes of Health, Baltimore, MD, USA
| | - Philip R Lee
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute On Aging, National Institutes of Health, Baltimore, MD, USA
| | - Kenneth W Fishbein
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute On Aging, National Institutes of Health, Baltimore, MD, USA
| | - Richard G Spencer
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute On Aging, National Institutes of Health, Baltimore, MD, USA
| | - Marta Zampino
- Department of Internal Medicine, University of Maryland, Baltimore, MD, USA
| | - Xinyi Sun
- School of Nursing, Johns Hopkins University, Baltimore, MD, USA
| | | | - Vered Stearns
- School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Michael Carducci
- School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Luigi Ferrucci
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute On Aging, National Institutes of Health, Baltimore, MD, USA
| | - Nada Lukkahatai
- National Institute of Nursing Research, National Institutes of Health, Bethesda, MD, 20892, USA
- School of Nursing, Johns Hopkins University, Baltimore, MD, USA
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Serafin A, Jasic-Szpak E, Marwick TH, Przewlocka-Kosmala M, Ponikowski P, Kosmala W. Contribution of reduced skeletal muscle perfusion reserve to exercise intolerance in heart failure with preserved ejection fraction. Int J Cardiol 2024; 395:131553. [PMID: 37871664 DOI: 10.1016/j.ijcard.2023.131553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/17/2023] [Accepted: 10/19/2023] [Indexed: 10/25/2023]
Abstract
BACKGROUND Skeletal muscle (SM)-associated mechanisms of exercise intolerance in HFpEF are insufficiently defined, and inadequate augmentation of SM blood flow during physical effort may be one of the contributors. Therefore, we sought to investigate the association of SM perfusion response to exertion with exercise capacity in this clinical condition. METHODS Echocardiography and SM microvascular perfusion by contrast-enhanced ultrasound were performed at rest and immediately post-exercise test in 77 HFpEF patients in NYHA class II and III, and in 25 subjects with normal exercise tolerance (stage B). Exercise reserve of cardiac function and SM perfusion was calculated by subtracting resting value from exercise value. RESULTS In addition to decreased cardiac functional reserve, HFpEF patients demonstrated significantly reduced SM perfusion reserve as compared to HF stage B, with the degree of impairment being greater in the subgroup with more profound left ventricular (LV) diastolic abnormalities (E/e' > 15 and TRV > 2.8 m/s). SM perfusion reserve was significantly associated with exercise capacity (beta = 0.33; SE 0.11; p = 0.003), cardiac output reserve (beta = 0.24; SE 0.12; p = 0.039), resting E/e' (beta = -0.33; SE 0.11; p = 0.006), and patient frailty expressed by the PRISMA 7 score (beta = -0.30; SE 0.11; p = 0.008). In multivariable analysis including clinical, demographic and cardiac functional variables, SM perfusion reserve was in addition to patient frailty, sex and LV longitudinal strain reserve among the independent correlates of exercise capacity. CONCLUSIONS SM perfusion reserve is impaired in HFpEF, and is associated with reduced exercise capacity independent of clinical, demographic and "central" cardiac factors. This supports the need to consider the SM domain in patient management strategies in HFpEF.
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Affiliation(s)
- Adam Serafin
- Institute of Heart Diseases, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland
| | - Ewelina Jasic-Szpak
- Institute of Heart Diseases, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland
| | - Thomas H Marwick
- Institute of Heart Diseases, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; Baker Heart and Diabetes Institute, 75 Commercial Rd, Melbourne VIC 3004, Victoria, Australia
| | | | - Piotr Ponikowski
- Institute of Heart Diseases, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland
| | - Wojciech Kosmala
- Institute of Heart Diseases, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland; Baker Heart and Diabetes Institute, 75 Commercial Rd, Melbourne VIC 3004, Victoria, Australia.
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5
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Mahmud SZ, Bashir A. Repeatability assessment for simultaneous measurement of arterial blood flow, venous oxygen saturation, and muscle perfusion following dynamic exercise. NMR IN BIOMEDICINE 2023; 36:e4872. [PMID: 36349386 DOI: 10.1002/nbm.4872] [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: 01/24/2022] [Revised: 11/04/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
The purpose of the present study was to demonstrate a new sequence and determine the repeatability of simultaneous dynamic measurements of blood flow, venous oxygen saturation (SvO2 ), and relative perfusion (change from resting perfusion) in calf muscle during recovery from plantar flexion exercise. The feasibility of near simultaneous measurement of bio-energetic parameters was also demonstrated. A sequence was developed to simultaneously measure arterial blood flow using flow-encoded projection, SvO2 using susceptibility-based oximetry, and relative perfusion using arterial spin labeling in combination with dynamic plantar flexion exercise. The parameters were determined at rest and during recovery from single leg plantar flexion exercise. Test-retest repeatability was analyzed using Bland-Altman analysis and intraclass correlation coefficients (ICC). The mitochondrial capacity of skeletal muscle was also measured immediately afterwards with dynamic phosphorus magnetic resonance spectroscopy. Eight healthy subjects participated in the study for test-retest repeatability. Popliteal artery blood flow at rest was 1.79 ± 0.58 ml/s and increased to 11.18 ± 3.02 ml/s immediately after exercise. Popliteal vein SvO2 decreased to 45.93% ± 6.5% from a resting value of 70.46% ± 4.76% following exercise. Relative perfusion (change from rest value) was 51.83 ± 15.00 ml/100 g/min at the cessation of exercise. The recovery of blood flow and SvO2 was modeled as a single exponential with time constants of 38.03 ± 6.91 and 71.19 ± 14.53 s, respectively. All the measured parameters exhibited good repeatability with ICC ranging from 0.8 to 0.95. Bioenergetics measurements were within normal range, demonstrating the feasibility of near simultaneous measurement of hemodynamic and energetic parameters. Clinical feasibility was assessed with Barth syndrome patients, demonstrating reduced oxygen extraction from the blood and reduced mitochondrial oxidative capacity compared with healthy controls. The proposed protocol allows rapid imaging of multiple parameters in skeletal muscle that might be affected in disease.
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Affiliation(s)
- Sultan Z Mahmud
- Department of Electrical and Computer Engineering, Auburn University, Auburn, Alabama, USA
| | - Adil Bashir
- Department of Electrical and Computer Engineering, Auburn University, Auburn, Alabama, USA
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6
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Jones EJ, Atherton PJ, Piasecki M, Phillips BE. Contrast-enhanced ultrasound repeatability for the measurement of skeletal muscle microvascular blood flow. Exp Physiol 2023; 108:549-553. [PMID: 36738267 PMCID: PMC10103852 DOI: 10.1113/ep091034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 01/24/2023] [Indexed: 02/05/2023]
Abstract
NEW FINDINGS What is the central question of this study? Contrast-enhanced ultrasound (CEUS) can be used to directly assess skeletal muscle perfusion but its day-to-day repeatability over time has not yet been validated: is CEUS a repeatable method for the measurement of skeletal muscle microvascular blood flow (MBF) at rest and in response to exercise, across independent assessment sessions? What is the main finding and its importance? A strong agreement between CEUS MBF measures across sessions suggests it is a repeatable method for assessing skeletal muscle perfusion over time. This validation provides confidence for incorporating these measures into longitudinal studies such as a chronic intervention or disease progression to gain further knowledge of skeletal muscle microvascular function. ABSTRACT Contrast-enhanced ultrasound (CEUS) can be used to directly assess skeletal muscle perfusion. However, its repeatability over time has not yet been validated and therefore its use in longitudinal measures (i.e., exploring the impact of a chronic intervention or disease progression) is limited. This study aimed to determine the repeatability of CEUS for the measurement of skeletal muscle microvascular blood flow (MBF) at baseline and in response to exercise, across independent assessment sessions. Ten healthy volunteers (five female; 30 ± 6 years) had CEUS of the right vastus lateralis recorded in two separate sessions, 14 days apart. Measurements were taken at baseline, during an isometric leg extension and during recovery. Acoustic intensity data from a region of interest were plotted as a replenishment curve to obtain blood volume (A) and flow velocity (β) values from a one-phase association non-linear regression of mean tissue echogenicity. Linear regression and Bland-Altman analyses of A and β values were performed, with significance assumed as P < 0.05. Strong positive correlations were observed across sessions for all A and β values (both P < 0.0001). Bland-Altman analysis showed a bias (SD) of -0.013 ± 1.24 for A and -0.014 ± 0.31 for β. A bias of 0.201 ± 0.770 at baseline, 0.527 ± 1.29 during contraction and -0.203 ± 1.29 at recovery was observed for A, and -0.0328 ± 0.0853 (baseline), -0.0446 ± 0.206 (contraction) and 0.0382 ± 0.233 (recovery) for β. A strong agreement between CEUS MBF measures across independent sessions suggests it to be a repeatable method for assessing skeletal muscle perfusion over time, and therefore facilitates wider use in longitudinal studies.
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Affiliation(s)
- Eleanor J. Jones
- Centre of Metabolism, Ageing and Physiology, MRC‐Versus Arthritis Centre for Musculoskeletal Ageing Research and National Institute for Health Research (NIHR) Nottingham Biomedical Research CentreUniversity of NottinghamDerbyUK
| | - Philip J. Atherton
- Centre of Metabolism, Ageing and Physiology, MRC‐Versus Arthritis Centre for Musculoskeletal Ageing Research and National Institute for Health Research (NIHR) Nottingham Biomedical Research CentreUniversity of NottinghamDerbyUK
| | - Mathew Piasecki
- Centre of Metabolism, Ageing and Physiology, MRC‐Versus Arthritis Centre for Musculoskeletal Ageing Research and National Institute for Health Research (NIHR) Nottingham Biomedical Research CentreUniversity of NottinghamDerbyUK
| | - Bethan E. Phillips
- Centre of Metabolism, Ageing and Physiology, MRC‐Versus Arthritis Centre for Musculoskeletal Ageing Research and National Institute for Health Research (NIHR) Nottingham Biomedical Research CentreUniversity of NottinghamDerbyUK
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Age-Related Changes in Skeletal Muscle Oxygen Utilization. J Funct Morphol Kinesiol 2022; 7:jfmk7040087. [PMID: 36278748 PMCID: PMC9590092 DOI: 10.3390/jfmk7040087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
The cardiovascular and skeletal muscle systems are intrinsically interconnected, sharing the goal of delivering oxygen to metabolically active tissue. Deficiencies within those systems that affect oxygen delivery to working tissues are a hallmark of advancing age. Oxygen delivery and utilization are reflected as muscle oxygen saturation (SmO2) and are assessed using near-infrared resonance spectroscopy (NIRS). SmO2 has been observed to be reduced by ~38% at rest, ~24% during submaximal exercise, and ~59% during maximal exercise with aging (>65 y). Furthermore, aging prolongs restoration of SmO2 back to baseline by >50% after intense exercise. Regulatory factors that contribute to reduced SmO2 with age include blood flow, capillarization, endothelial cells, nitric oxide, and mitochondrial function. These mechanisms are governed by reactive oxygen species (ROS) at the cellular level. However, mishandling of ROS with age ultimately leads to alterations in structure and function of the regulatory factors tasked with maintaining SmO2. The purpose of this review is to provide an update on the current state of the literature regarding age-related effects in SmO2. Furthermore, we attempt to bridge the gap between SmO2 and associated underlying mechanisms affected by aging.
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Wang AN, Fraser GM, McGuire JJ. Characterization of Endothelium-Dependent Relaxation in the Saphenous Artery and Its Caudal Branches in Young and Old Adult Sprague Dawley Rats. Biomolecules 2022; 12:biom12070889. [PMID: 35883445 PMCID: PMC9312764 DOI: 10.3390/biom12070889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 12/11/2022] Open
Abstract
Ageing is associated with reduced endothelium-derived nitric oxide (NO) production in the femoral artery of Sprague Dawley (SD) rats. In the current study, we examined endothelium-dependent relaxation (EDR) in the saphenous artery and its caudal branches. We used acetylcholine and the Proteinase-Activated receptor-2 (PAR2)-specific agonist (2fLIGRLO) with nitroarginine methylester (L-NAME) to assess EDR in two groups of male SD rats (age in weeks: young, 10–12; old, 27–29). Acetylcholine and 2fLIGRLO were potent NO-dependent relaxant agents in all arteries. For all arteries, EDR by acetylcholine decreased significantly in old compared to young SD rats. Interestingly, PAR2-induced EDR of proximal saphenous artery segments and caudal branches decreased significantly in old compared to young, but did not differ for the in-between middle and distal ends of the saphenous artery. L-NAME treatment increased subsequent contractions of proximal and middle segments of saphenous arteries by phenylephrine and U46619 in young, but not in old, SD rats. We conclude the SD saphenous artery and caudal branches exhibit regional characteristics that differ in response to specific EDR agonists, endothelial NO synthase inhibitor, and changes to endothelium function with increased age, which are, in part, attributed to decreased sensitivity of vascular smooth muscle to the gaseous transmitter NO.
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Affiliation(s)
- Andrea N. Wang
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, ON N6A 5C1, Canada;
| | - Graham M. Fraser
- Division of BioMedical Sciences, Faculty of Medicine, Memorial University, St. John’s, NL A1B 3V6, Canada;
| | - John J. McGuire
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, ON N6A 5C1, Canada;
- Department of Physiology and Pharmacology, Schulich School of Medicine & Dentistry, Western University, London, ON N6A 5C1, Canada
- Correspondence:
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Langenfeld A, Wirth B, Scherer-Vrana A, Riner F, Gaehwiler K, Valdivieso P, Humphreys BK, Scholkmann F, Flueck M, Schweinhardt P. No alteration of back muscle oxygenation during isometric exercise in individuals with non-specific low back pain. Sci Rep 2022; 12:8306. [PMID: 35585081 PMCID: PMC9117220 DOI: 10.1038/s41598-022-11683-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 04/27/2022] [Indexed: 11/16/2022] Open
Abstract
The aim of our study was (I) To compare back muscle oxygenation and perfusion as well as Biering–Sorensen muscle endurance (BSME) test holding times between chronic non-specific low back pain (CNSLBP) patients and asymptomatic controls matched for age, body mass index (BMI), sex and physical activity, and (II) to investigate factors associated with BSME holding times. Muscle perfusion (tHb) and oxygenation (SmO2) were measured by near-infrared spectroscopy (NIRS) based oximetry in three back muscles during the BSME. Reliability of tHb and SmO2 was assessed in a separate sample. BSME holding time and SmO2 were compared between patients (n = 45) and controls (n = 45) and factors associated with BSME holding time were assessed using multiple linear regression. Reliability for SmO2 was excellent (ICC = 0.87–0.99). THb showed poor to moderate reliability and was not further used. Groups differed for BSME holding time (P = 0.03), pain intensity (P ≤ 0.0005) and subcutaneous tissue thickness (P = 0.01) but not for NIRS measures. Physical activity and BMI were associated with BSME holding times. Insufficient muscle oxygenation does not seem to be a major factor contributing to CNSLBP. Future investigation should evaluate other determinants of BSME holding times, such as motivation and recruitment of auxiliary muscles.
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Affiliation(s)
- Anke Langenfeld
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland.
| | - Brigitte Wirth
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland.,Winterthur Institute of Health Economics, School of Management and Law, University of Applied Sciences, Gertrudstr. 15, 8400, Winterthur, Switzerland
| | - Andrea Scherer-Vrana
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - Fabienne Riner
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - Kyra Gaehwiler
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - Paola Valdivieso
- Laboratory of Muscle Plasticity, Balgrist University Hospital and University of Zurich, Balgrist Campus, Lengghalde 5, 8008, Zurich, Switzerland
| | - B Kim Humphreys
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - Felix Scholkmann
- Scholkmann Data Analysis Services, Scientific Consulting and Physical Engineering, Schuppisstr. 5, 8057, Zurich, Switzerland.,Department for Neonatology, University Hospital Zurich and University of Zurich, Rämistrasse 100, 8091, Zurich, Switzerland
| | - Martin Flueck
- Laboratory of Muscle Plasticity, Balgrist University Hospital and University of Zurich, Balgrist Campus, Lengghalde 5, 8008, Zurich, Switzerland.,Swiss Federal Institute of Sport Magglingen SFISM, Lärchenplatz building HLP 107, 2532, Magglingen, Switzerland
| | - Petra Schweinhardt
- Department of Chiropractic Medicine, Balgrist University Hospital and University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
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Oberdier MT, AlGhatrif M, Adelnia F, Zampino M, Morrell CH, Simonsick E, Fishbein K, Lakatta EG, McDermott MM, Ferrucci L. Ankle-Brachial Index and Energy Production in People Without Peripheral Artery Disease: The BLSA. J Am Heart Assoc 2022; 11:e019014. [PMID: 35253449 PMCID: PMC9075330 DOI: 10.1161/jaha.120.019014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/04/2021] [Indexed: 11/16/2022]
Abstract
Background Lower ankle-brachial index (ABI) values within the 0.90 to 1.40 range are associated with poorer mitochondrial oxidative capacity of thigh muscles in cross-sectional analyses. Whether ABI decline is associated with greater declines in thigh muscle oxidative capacity with aging is unknown. Method and Results We analyzed data from 228 participants (100 men) of the BLSA (Baltimore Longitudinal Study of Aging), aged 39 to 97 years, with an ABI between 0.9 and 1.40 at baseline and at follow-up (mean follow-up period of 2.8 years). We examined mitochondrial oxidative capacity of the left thigh muscle, by measuring the postexercise phosphocreatine recovery rate constant (kPCr) from phosphorus-31 magnetic resonance spectroscopy. Greater kPCr indicated higher mitochondrial oxidative capacity. Although kPCr was available on the left leg only, ABI was measured in both legs. Longitudinal rates of change (Change) of left and right ABI and kPCr of the left thigh muscle were estimated using linear mixed effects models, and their association was analyzed by standardized multiple linear regressions. In multivariate analysis including sex, age, baseline kPCr, both left and right baseline ABI, and ABI change in both legs, (kPCr)Change was directly associated with ipsilateral (left) (ABI)Change (standardized [STD]-β=0.14; P=0.0168) but not with contralateral (right) (ABI)Change (P=0.22). Adjusting for traditional cardiovascular risk factors, this association remained significant (STD-β=0.18; P=0.0051). (kPCr)Change was steeper in White race participants (STD-β=0.16; P=0.0122) and body mass index (STD-β=0.13; P=0.0479). There was no significant association with current smoking status (P=0.63), fasting glucose (P=0.28), heart rate (P=0.67), mean blood pressure (P=0.78), and low-density lipoprotein (P=0.75), high-density lipoprotein (P=0.82), or triglycerides (P=0.15). Conclusions In people without peripheral arterial disease, greater decline in ABI over time, but not baseline ABI, was associated with faster decline in thigh mitochondrial oxidative capacity in the ipsilateral leg. Further studies are needed to examine whether early interventions that improve lower extremity muscle perfusion can improve and prevent the decline of muscle energetics.
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Affiliation(s)
- Matt T. Oberdier
- Laboratory of Cardiovascular ScienceNational Institute on AgingBaltimoreMD
- Longitudinal Studies SectionNational Institute on AgingBaltimoreMD
| | - Majd AlGhatrif
- Laboratory of Cardiovascular ScienceNational Institute on AgingBaltimoreMD
- Longitudinal Studies SectionNational Institute on AgingBaltimoreMD
- Department of MedicineJohns Hopkins School of MedicineBaltimoreMD
| | - Fatemeh Adelnia
- Longitudinal Studies SectionNational Institute on AgingBaltimoreMD
| | - Marta Zampino
- Longitudinal Studies SectionNational Institute on AgingBaltimoreMD
| | - Christopher H. Morrell
- Laboratory of Cardiovascular ScienceNational Institute on AgingBaltimoreMD
- Loyola University MarylandBaltimoreMD
| | | | - Kenneth Fishbein
- Laboratory of Clinical InvestigationNational Institute on AgingBaltimoreMD
| | - Edward G. Lakatta
- Laboratory of Cardiovascular ScienceNational Institute on AgingBaltimoreMD
| | - Mary M. McDermott
- Department of MedicineNorthwestern University Feinberg School of MedicineChicagoIL
| | - Luigi Ferrucci
- Longitudinal Studies SectionNational Institute on AgingBaltimoreMD
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11
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Grevendonk L, Connell NJ, McCrum C, Fealy CE, Bilet L, Bruls YMH, Mevenkamp J, Schrauwen-Hinderling VB, Jörgensen JA, Moonen-Kornips E, Schaart G, Havekes B, de Vogel-van den Bosch J, Bragt MCE, Meijer K, Schrauwen P, Hoeks J. Impact of aging and exercise on skeletal muscle mitochondrial capacity, energy metabolism, and physical function. Nat Commun 2021; 12:4773. [PMID: 34362885 PMCID: PMC8346468 DOI: 10.1038/s41467-021-24956-2] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 07/08/2021] [Indexed: 12/13/2022] Open
Abstract
The relationship between the age-associated decline in mitochondrial function and its effect on skeletal muscle physiology and function remain unclear. In the current study, we examined to what extent physical activity contributes to the decline in mitochondrial function and muscle health during aging and compared mitochondrial function in young and older adults, with similar habitual physical activity levels. We also studied exercise-trained older adults and physically impaired older adults. Aging was associated with a decline in mitochondrial capacity, exercise capacity and efficiency, gait stability, muscle function, and insulin sensitivity, even when maintaining an adequate daily physical activity level. Our data also suggest that a further increase in physical activity level, achieved through regular exercise training, can largely negate the effects of aging. Finally, mitochondrial capacity correlated with exercise efficiency and insulin sensitivity. Together, our data support a link between mitochondrial function and age-associated deterioration of skeletal muscle. Aging is associated with a progressive loss of muscle function. Here the authors characterize mitochondrial capacity and muscle function in young and older adults with similar habitual physical activity and also compared to older adults with exercise training or with physical impairment.
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Affiliation(s)
- L Grevendonk
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.,TI Food and Nutrition, Wageningen, The Netherlands
| | - N J Connell
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.,TI Food and Nutrition, Wageningen, The Netherlands
| | - C McCrum
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - C E Fealy
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.,TI Food and Nutrition, Wageningen, The Netherlands
| | - L Bilet
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.,TI Food and Nutrition, Wageningen, The Netherlands
| | - Y M H Bruls
- Department of Radiology and Nuclear Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - J Mevenkamp
- Department of Radiology and Nuclear Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - V B Schrauwen-Hinderling
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.,Department of Radiology and Nuclear Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - J A Jörgensen
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - E Moonen-Kornips
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - G Schaart
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - B Havekes
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.,Department of Internal Medicine, Division of Endocrinology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+, Maastricht, The Netherlands
| | | | - M C E Bragt
- Friesland-Campina, Amersfoort, The Netherlands
| | - K Meijer
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - P Schrauwen
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.,TI Food and Nutrition, Wageningen, The Netherlands
| | - J Hoeks
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands. .,TI Food and Nutrition, Wageningen, The Netherlands.
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12
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Chungath RR, Witham MD, Clarke CL, Hutcheon A, Gandy S, Gingles C, Priba L, Nicholas SR, Cavin I, Sumukadas D, Struthers AD, George J. Association between mitochondrial function measured by 31P magnetic resonance spectroscopy and physical performance in older people with functional impairment. JCSM CLINICAL REPORTS 2021. [DOI: 10.1002/crt2.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Rebecca R. Chungath
- AGE Research Group, NIHR Newcastle Biomedical Research Centre Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon Tyne UK
| | - Miles D. Witham
- AGE Research Group, NIHR Newcastle Biomedical Research Centre Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon Tyne UK
- Division of Molecular and Clinical Medicine University of Dundee, Ninewells Hospital and Medical School Dundee UK
| | - Clare L. Clarke
- Division of Molecular and Clinical Medicine University of Dundee, Ninewells Hospital and Medical School Dundee UK
| | - Anita Hutcheon
- Division of Molecular and Clinical Medicine University of Dundee, Ninewells Hospital and Medical School Dundee UK
| | - Stephen Gandy
- Department of Medical Physics Ninewells Hospital, NHS Tayside Dundee UK
| | - Christopher Gingles
- Division of Molecular and Clinical Medicine University of Dundee, Ninewells Hospital and Medical School Dundee UK
| | - Lukasz Priba
- Department of Medical Physics Ninewells Hospital, NHS Tayside Dundee UK
| | | | - Ian Cavin
- Department of Medical Physics NHS Lothian Edinburgh UK
| | - Deepa Sumukadas
- Department of Medicine for the Elderly Ninewells Hospital, NHS Tayside Dundee UK
| | - Allan D. Struthers
- Division of Molecular and Clinical Medicine University of Dundee, Ninewells Hospital and Medical School Dundee UK
| | - Jacob George
- Division of Molecular and Clinical Medicine University of Dundee, Ninewells Hospital and Medical School Dundee UK
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13
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Lifelong Endurance Exercise as a Countermeasure Against Age-Related [Formula: see text] Decline: Physiological Overview and Insights from Masters Athletes. Sports Med 2021; 50:703-716. [PMID: 31873927 DOI: 10.1007/s40279-019-01252-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Maximum oxygen consumption ([Formula: see text]) is not only an indicator of endurance performance, but also a strong predictor of cardiovascular disease and mortality. This physiological parameter is known to decrease with aging. In turn, physical exercise might attenuate the rate of aging-related decline in [Formula: see text], which in light of the global population aging is of major clinical relevance, especially at advanced ages. In this narrative review, we summarize the evidence available from masters athletes about the role of lifelong endurance exercise on aging-related [Formula: see text] decline, with examples of the highest [Formula: see text] values reported in the scientific literature for athletes across different ages (e.g., 35 ml·kg-1·min-1 in a centenarian cyclist). These data suggest that a linear decrease in [Formula: see text] might be possible if physical exercise loads are kept consistently high through the entire life span, with [Formula: see text] values remaining higher than those of the general population across all ages. We also summarize the main physiological changes that occur with inactive aging at different system levels-pulmonary and cardiovascular function, blood O2 carrying capacity, skeletal muscle capillary density and oxidative capacity-and negatively influence [Formula: see text], and review how lifelong exercise can attenuate or even prevent most-but apparently not all (e.g., maximum heart rate decline)-of them. In summary, although aging seems to be invariably associated with a progressive decline in [Formula: see text], maintaining high levels of physical exercise along the life span slows the multi-systemic deterioration that is commonly observed in inactive individuals, thereby attenuating age-related [Formula: see text] decline.
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14
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Reiter DA, Adelnia F, Cameron D, Spencer RG, Ferrucci L. Parsimonious modeling of skeletal muscle perfusion: Connecting the stretched exponential and fractional Fickian diffusion. Magn Reson Med 2021; 86:1045-1057. [PMID: 33724547 DOI: 10.1002/mrm.28766] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 02/12/2021] [Accepted: 02/14/2021] [Indexed: 12/30/2022]
Abstract
PURPOSE To develop an anomalous (non-Gaussian) diffusion model for characterizing skeletal muscle perfusion using multi-b-value DWI. THEORY AND METHODS Fick's first law was extended for describing tissue perfusion as anomalous superdiffusion, which is non-Gaussian diffusion exhibiting greater particle spread than that of the Gaussian case. This was accomplished using a space-fractional derivative that gives rise to a power-law relationship between mean squared displacement and time, and produces a stretched exponential signal decay as a function of b-value. Numerical simulations were used to estimate parameter errors under in vivo conditions, and examine the effect of limited SNR and residual fat signal. Stretched exponential DWI parameters, α and D , were measured in thigh muscles of 4 healthy volunteers at rest and following in-magnet exercise. These parameters were related to a stable distribution of jump-length probabilities and used to estimate microvascular volume fractions. RESULTS Numerical simulations showed low dispersion in parameter estimates within 1.5% and 1%, and bias errors within 3% and 10%, for α and D , respectively. Superdiffusion was observed in resting muscle, and to a greater degree following exercise. Resting microvascular volume fraction was between 0.0067 and 0.0139 and increased between 2.2-fold and 4.7-fold following exercise. CONCLUSIONS This model captures superdiffusive molecular motions consistent with perfusion, using a parsimonious representation of the DWI signal, providing approximations of microvascular volume fraction comparable with histological estimates. This signal model demonstrates low parameter-estimation errors, and therefore holds potential for a wide range of applications in skeletal muscle and elsewhere in the body.
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Affiliation(s)
- David A Reiter
- Department of Radiology & Imaging Sciences, Emory University, Atlanta, Georgia, USA.,Department of Orthopedics, Emory University, Atlanta, Georgia, USA
| | - Fatemeh Adelnia
- Vanderbilt University Institute of Imaging Sciences, Vanderbilt University, Medical center, Nashville, Tennessee, USA
| | - Donnie Cameron
- Norwich Medical School, University of East Anglia, Norwich, United Kingdom.,C.J. Gorter Center for High Field MRI, Department of Radiology, Leiden Medical Center, Leiden, the Netherlands
| | - Richard G Spencer
- National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA
| | - Luigi Ferrucci
- National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA
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15
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Mkrtchyan GV, Abdelmohsen K, Andreux P, Bagdonaite I, Barzilai N, Brunak S, Cabreiro F, de Cabo R, Campisi J, Cuervo AM, Demaria M, Ewald CY, Fang EF, Faragher R, Ferrucci L, Freund A, Silva-García CG, Georgievskaya A, Gladyshev VN, Glass DJ, Gorbunova V, de Grey A, He WW, Hoeijmakers J, Hoffmann E, Horvath S, Houtkooper RH, Jensen MK, Jensen MB, Kane A, Kassem M, de Keizer P, Kennedy B, Karsenty G, Lamming DW, Lee KF, MacAulay N, Mamoshina P, Mellon J, Molenaars M, Moskalev A, Mund A, Niedernhofer L, Osborne B, Pak HH, Parkhitko A, Raimundo N, Rando TA, Rasmussen LJ, Reis C, Riedel CG, Franco-Romero A, Schumacher B, Sinclair DA, Suh Y, Taub PR, Toiber D, Treebak JT, Valenzano DR, Verdin E, Vijg J, Young S, Zhang L, Bakula D, Zhavoronkov A, Scheibye-Knudsen M. ARDD 2020: from aging mechanisms to interventions. Aging (Albany NY) 2020; 12:24484-24503. [PMID: 33378272 PMCID: PMC7803558 DOI: 10.18632/aging.202454] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 12/12/2020] [Indexed: 02/07/2023]
Abstract
Aging is emerging as a druggable target with growing interest from academia, industry and investors. New technologies such as artificial intelligence and advanced screening techniques, as well as a strong influence from the industry sector may lead to novel discoveries to treat age-related diseases. The present review summarizes presentations from the 7th Annual Aging Research and Drug Discovery (ARDD) meeting, held online on the 1st to 4th of September 2020. The meeting covered topics related to new methodologies to study aging, knowledge about basic mechanisms of longevity, latest interventional strategies to target the aging process as well as discussions about the impact of aging research on society and economy. More than 2000 participants and 65 speakers joined the meeting and we already look forward to an even larger meeting next year. Please mark your calendars for the 8th ARDD meeting that is scheduled for the 31st of August to 3rd of September, 2021, at Columbia University, USA.
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Affiliation(s)
- Garik V. Mkrtchyan
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Kotb Abdelmohsen
- Laboratory of Genetics and Genomics, National Institute on Aging Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Pénélope Andreux
- Amazentis SA, EPFL Innovation Park, Bâtiment C, Lausanne, Switzerland
| | - Ieva Bagdonaite
- Center for Glycomics, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Nir Barzilai
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Institute for Aging Research, Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Søren Brunak
- Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | - Filipe Cabreiro
- Institute of Clinical Sciences, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Rafael de Cabo
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Judith Campisi
- Buck Institute for Research on Aging, Novato, CA 94945, USA
| | - Ana Maria Cuervo
- Department of Developmental and Molecular Biology, Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Marco Demaria
- European Research Institute for the Biology of Ageing, University Medical Center Groningen, University of Groningen, The Netherlands
| | - Collin Y. Ewald
- Institute of Translational Medicine, Department of Health Sciences and Technology, Swiss Federal Institute for Technology Zürich, Switzerland
| | - Evandro Fei Fang
- Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, 1478 Lørenskog, Norway
| | - Richard Faragher
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | - Luigi Ferrucci
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Adam Freund
- Calico Life Sciences, LLC, South San Francisco, CA 94080, USA
| | - Carlos G. Silva-García
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | | | - Vadim N. Gladyshev
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - David J. Glass
- Regeneron Pharmaceuticals, Inc. Tarrytown, NY 10591, USA
| | - Vera Gorbunova
- Departments of Biology and Medicine, University of Rochester, Rochester, NY 14627, USA
| | | | - Wei-Wu He
- Human Longevity Inc., San Diego, CA 92121, USA
| | - Jan Hoeijmakers
- Department of Genetics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Eva Hoffmann
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Steve Horvath
- Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Riekelt H. Houtkooper
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Majken K. Jensen
- Section of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | | | - Alice Kane
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA 94107, USA
| | - Moustapha Kassem
- Molecular Endocrinology Unit, Department of Endocrinology, University Hospital of Odense and University of Southern Denmark, Odense, Denmark
| | - Peter de Keizer
- Department of Molecular Cancer Research, Center for Molecular Medicine, Division of Biomedical Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Brian Kennedy
- Buck Institute for Research on Aging, Novato, CA 94945, USA
- Departments of Biochemistry and Physiology, Yong Loo Lin School of Medicine, National University Singapore, Singapore
- Centre for Healthy Ageing, National University Healthy System, Singapore
| | - Gerard Karsenty
- Department of Genetics and Development, Columbia University Medical Center, New York, NY 10032, USA
| | - Dudley W. Lamming
- Department of Medicine, University of Wisconsin-Madison and William S. Middleton Memorial Veterans Hospital, Madison, WI 53792, USA
| | - Kai-Fu Lee
- Sinovation Ventures and Sinovation AI Institute, Beijing, China
| | - Nanna MacAulay
- Department of Neuroscience, University of Copenhagen, Denmark
| | - Polina Mamoshina
- Deep Longevity Inc., Hong Kong Science and Technology Park, Hong Kong
| | - Jim Mellon
- Juvenescence Limited, Douglas, Isle of Man, UK
| | - Marte Molenaars
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Alexey Moskalev
- Institute of Biology of FRC Komi Science Center of Ural Division of RAS, Syktyvkar, Russia
| | - Andreas Mund
- Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | - Laura Niedernhofer
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Brenna Osborne
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Heidi H. Pak
- Department of Medicine, University of Wisconsin-Madison and William S. Middleton Memorial Veterans Hospital, Madison, WI 53792, USA
| | | | - Nuno Raimundo
- Institute of Cellular Biochemistry, University Medical Center Goettingen, Goettingen, Germany
| | - Thomas A. Rando
- Department of Neurology and Neurological Sciences and Paul F. Glenn Center for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Lene Juel Rasmussen
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | | | - Christian G. Riedel
- Department of Biosciences and Nutrition, Karolinska Institute, Stockholm, Sweden
| | | | - Björn Schumacher
- Institute for Genome Stability in Ageing and Disease, Medical Faculty, University of Cologne, Cologne, Germany
| | - David A. Sinclair
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA 94107, USA
- Department of Pharmacology, School of Medical Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Yousin Suh
- Departments of Obstetrics and Gynecology, Genetics and Development, Columbia University, New York, NY 10027, USA
| | - Pam R. Taub
- Division of Cardiovascular Medicine, University of California, San Diego, CA 92093, USA
| | - Debra Toiber
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Jonas T. Treebak
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | | | - Eric Verdin
- Buck Institute for Research on Aging, Novato, CA 94945, USA
| | - Jan Vijg
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | | | - Lei Zhang
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Daniela Bakula
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Alex Zhavoronkov
- Insilico Medicine, Hong Kong Science and Technology Park, Hong Kong
| | - Morten Scheibye-Knudsen
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
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16
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Malis V, Sinha U, Sinha S. 3D Muscle Deformation Mapping at Submaximal Isometric Contractions: Applications to Aging Muscle. Front Physiol 2020; 11:600590. [PMID: 33343396 PMCID: PMC7744822 DOI: 10.3389/fphys.2020.600590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 11/09/2020] [Indexed: 11/24/2022] Open
Abstract
3D strain or strain rate tensor mapping comprehensively captures regional muscle deformation. While compressive strain along the muscle fiber is a potential measure of the force generated, radial strains in the fiber cross-section may provide information on the material properties of the extracellular matrix. Additionally, shear strain may potentially inform on the shearing of the extracellular matrix; the latter has been hypothesized as the mechanism of lateral transmission of force. Here, we implement a novel fast MR method for velocity mapping to acquire multi-slice images at different % maximum voluntary contraction (MVC) for 3D strain mapping to explore deformation in the plantar-flexors under isometric contraction in a cohort of young and senior subjects. 3D strain rate and strain tensors were computed and eigenvalues and two invariants (maximum shear and volumetric strain) were extracted. Strain and strain rate indices (contractile and in-plane strain/strain rate, shear strain/strain rate) changed significantly with %MVC (30 and 60% MVC) and contractile and shear strain with age in the medial gastrocnemius. In the soleus, significant differences with age in contractile and shear strain were seen. Univariate regression revealed weak but significant correlation of in-plane and shear strain and shear strain rate indices to %MVC and correlation of contractile and shear strain indices to force. The ability to map strain tensor components provides unique insights into muscle physiology: with contractile strain providing an index of the force generated by the muscle fibers while the shear strain could potentially be a marker of lateral transmission of force.
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Affiliation(s)
- Vadim Malis
- Department of Physics, University of California, San Diego, San Diego, CA, United States.,Department of Radiology, University of California, San Diego, San Diego, CA, United States
| | - Usha Sinha
- Department of Physics, San Diego State University, San Diego, CA, United States
| | - Shantanu Sinha
- Department of Radiology, University of California, San Diego, San Diego, CA, United States
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17
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Mangi AA, Hammad MA, Khan H, Arain SP, Shahzad MA, Dar E, Alam A, Hassanein AH. Evaluation of the geriatric patients prescription for inappropriate medications frequency at Larkana Sindh Hospital in Pakistan. CLINICAL EPIDEMIOLOGY AND GLOBAL HEALTH 2020. [DOI: 10.1016/j.cegh.2020.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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18
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Regulation of microRNAs in Satellite Cell Renewal, Muscle Function, Sarcopenia and the Role of Exercise. Int J Mol Sci 2020; 21:ijms21186732. [PMID: 32937893 PMCID: PMC7555198 DOI: 10.3390/ijms21186732] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/10/2020] [Accepted: 09/12/2020] [Indexed: 02/07/2023] Open
Abstract
Sarcopenia refers to a condition of progressive loss of skeletal muscle mass and function associated with a higher risk of falls and fractures in older adults. Musculoskeletal aging leads to reduced muscle mass and strength, affecting the quality of life in elderly people. In recent years, several studies contributed to improve the knowledge of the pathophysiological alterations that lead to skeletal muscle dysfunction; however, the molecular mechanisms underlying sarcopenia are still not fully understood. Muscle development and homeostasis require a fine gene expression modulation by mechanisms in which microRNAs (miRNAs) play a crucial role. miRNAs modulate key steps of skeletal myogenesis including satellite cells renewal, skeletal muscle plasticity, and regeneration. Here, we provide an overview of the general aspects of muscle regeneration and miRNAs role in skeletal mass homeostasis and plasticity with a special interest in their expression in sarcopenia and skeletal muscle adaptation to exercise in the elderly.
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Adelnia F, Ubaida‐Mohien C, Moaddel R, Shardell M, Lyashkov A, Fishbein KW, Aon MA, Spencer RG, Ferrucci L. Proteomic signatures of in vivo muscle oxidative capacity in healthy adults. Aging Cell 2020; 19:e13124. [PMID: 32196924 PMCID: PMC7189997 DOI: 10.1111/acel.13124] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 11/24/2019] [Accepted: 01/25/2020] [Indexed: 12/18/2022] Open
Abstract
Adequate support of energy for biological activities and during fluctuation of energetic demand is crucial for healthy aging; however, mechanisms for energy decline as well as compensatory mechanisms that counteract such decline remain unclear. We conducted a discovery proteomic study of skeletal muscle in 57 healthy adults (22 women and 35 men; aged 23–87 years) to identify proteins overrepresented and underrepresented with better muscle oxidative capacity, a robust measure of in vivo mitochondrial function, independent of age, sex, and physical activity. Muscle oxidative capacity was assessed by 31P magnetic resonance spectroscopy postexercise phosphocreatine (PCr) recovery time (τPCr) in the vastus lateralis muscle, with smaller τPCr values reflecting better oxidative capacity. Of the 4,300 proteins quantified by LC‐MS in muscle biopsies, 253 were significantly overrepresented with better muscle oxidative capacity. Enrichment analysis revealed three major protein clusters: (a) proteins involved in key energetic mitochondrial functions especially complex I of the electron transport chain, tricarboxylic acid (TCA) cycle, fatty acid oxidation, and mitochondrial ABC transporters; (b) spliceosome proteins that regulate mRNA alternative splicing machinery, and (c) proteins involved in translation within mitochondria. Our findings suggest that alternative splicing and mechanisms that modulate mitochondrial protein synthesis are central features of the molecular mechanisms aimed at maintaining mitochondrial function in the face of impairment. Whether these mechanisms are compensatory attempt to counteract the effect of aging on mitochondrial function should be further tested in longitudinal studies.
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Affiliation(s)
- Fatemeh Adelnia
- Translational Gerontology Branch Intramural Research Program National Institute on AgingNational Institutes of Health Baltimore Maryland
- Vanderbilt University Institute of Imaging Science Vanderbilt University Medical Center Nashville Tennessee
| | - Ceereena Ubaida‐Mohien
- Translational Gerontology Branch Intramural Research Program National Institute on AgingNational Institutes of Health Baltimore Maryland
| | - Ruin Moaddel
- Laboratory of Clinical Investigation Intramural Research Program National Institute on Aging, National Institutes of Health Baltimore Maryland
| | - Michelle Shardell
- Translational Gerontology Branch Intramural Research Program National Institute on AgingNational Institutes of Health Baltimore Maryland
| | - Alexey Lyashkov
- Laboratory of Clinical Investigation Intramural Research Program National Institute on Aging, National Institutes of Health Baltimore Maryland
| | - Kenneth W. Fishbein
- Laboratory of Clinical Investigation Intramural Research Program National Institute on Aging, National Institutes of Health Baltimore Maryland
| | - Miguel A. Aon
- Translational Gerontology Branch Intramural Research Program National Institute on AgingNational Institutes of Health Baltimore Maryland
| | - Richard G. Spencer
- Laboratory of Clinical Investigation Intramural Research Program National Institute on Aging, National Institutes of Health Baltimore Maryland
| | - Luigi Ferrucci
- Translational Gerontology Branch Intramural Research Program National Institute on AgingNational Institutes of Health Baltimore Maryland
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In vivo assessment of mitochondrial capacity using NIRS in locomotor muscles of young and elderly males with similar physical activity levels. GeroScience 2019; 42:299-310. [PMID: 31858399 PMCID: PMC7031190 DOI: 10.1007/s11357-019-00145-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 12/03/2019] [Indexed: 12/21/2022] Open
Abstract
Mitochondrial capacity is pivotal to skeletal muscle function and is suggested to decline with age. However, there is large heterogeneity in current data, possibly due to effect modifiers such as physical activity, sex and muscle group. Yet, few studies have compared multiple muscle groups in different age groups with comparable physical activity levels. Here, we newly used near-infrared spectroscopy (NIRS) to characterise mitochondrial capacity in three different locomotor muscles in young (19-25 year) and older (65-71 year), healthy males with similar physical activity levels. Mitochondrial capacity and reperfusion after arterial occlusion was measured in the vastus lateralis (VL), the gastrocnemius (GA) and the tibialis anterior (TA). Physical activity was verified using accelerometry and was not different between the age groups (404.3 ± 214.9 vs 494.9 ± 187.0 activity kcal per day, p = 0.16). Mitochondrial capacity was significantly lower in older males in the GA and VL, but not in the TA (p = 0.048, p = 0.036 and p = 0.64, respectively). Reperfusion rate was not significantly different for the GA (p = 0.55), but was significantly faster in the TA and VL in the young group compared to the older group (p = 0.0094 and p = 0.039, respectively). In conclusion, we identified distinct modes of mitochondrial ageing in different locomotor muscles in a young and older population with similar physical activity patterns. Furthermore, we show that NIRS is suitable for relatively easy application in ageing research and can reveal novel insights into mitochondrial functioning with age.
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Adelnia F, Urbanek J, Osawa Y, Shardell M, Brennan NA, Fishbein KW, Spencer RG, Simonsick EM, Schrack JA, Ferrucci L. Moderate-to-Vigorous Physical Activity Is Associated With Higher Muscle Oxidative Capacity in Older Adults. J Am Geriatr Soc 2019; 67:1695-1699. [PMID: 31116422 PMCID: PMC6684385 DOI: 10.1111/jgs.15991] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/21/2019] [Accepted: 05/02/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Age-related decline in muscle oxidative capacity reduces muscle function and physical performance, leading to disability and frailty. Whether age-related decline in oxidative capacity is modified by exercise and other lifestyle practices is unclear. Therefore, we tested the hypothesis that physical activity is associated with better oxidative capacity, independent of age. DESIGN Cross-sectional study performed in the Baltimore Longitudinal Study of Aging, conducted by the Intramural Research Program (IRP) of the National Institute on Aging (NIA). SETTING NIA IRP Clinical Research Unit, Baltimore, MD. PARTICIPANTS Participants included 384 adults (54.7% women), aged 22 to 92 years, seen between 2013 and 2017. MEASUREMENTS Muscle oxidative capacity was measured in vivo using phosphorous magnetic resonance spectroscopy. We determined the postexercise time constant (τPCr ; in seconds) for phosphocreatine (PCr) recovery, with lower values of τPCr, (ie, more rapid recovery of PCr levels after exercise) reflecting greater oxidative capacity. Time spent in moderate-to-vigorous physical activity (MVPA) was assessed using wearable accelerometers that participants wore 5.9 ± 0.9 consecutive days in the free-living environment. RESULTS In linear regression models, higher τPCr was associated with older age (standardized β = .39; P < .001) after adjusting for sex, race, height, and weight. After including MVPA as an independent variable, the standardized regression coefficient of age decreased by 40%, but remained associated with τPCr (βage = .22; P < .001) and had a smaller standardized regression coefficient than MVPA (βMVPA = -.33; P < .001). After adjusting for health status, education, and smoking history, the standardized regression coefficient for age decreased 12% (βage = .20; P = .003), while the standardized coefficient for MVPA decreased only 3% (βMVPA = -.32; P < .001). CONCLUSION Study findings suggest that MVPA is strongly associated with muscle oxidative capacity, independent of age, providing mechanistic insights into the health benefits of exercise in older age. J Am Geriatr Soc 67:1695-1699, 2019.
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Affiliation(s)
- Fatemeh Adelnia
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health
- Corresponding Authors: Fatemeh Adelnia; MedStar Harbor Hospital, 3001 S. Hanover Street, 5th Floor, Baltimore, MD; Phone: 410 350 7301; ; Luigi Ferrucci; Biomedical Research Center, 251 Bayview Boulevard, Suite 100, Phone: 410-558-8110;
| | - Jacek Urbanek
- John Hopkins University School of Medicine, Department of Medicine, Division of Geriatric Medicine and Gerontology, Center on Aging and Health
| | - Yusuke Osawa
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health
| | - Michelle Shardell
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health
| | - Nicholas A. Brennan
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, National Institutes of Health
| | - Kenneth W. Fishbein
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, National Institutes of Health
| | - Richard G. Spencer
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, National Institutes of Health
| | - Eleanor M. Simonsick
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health
| | | | - Luigi Ferrucci
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health
- Corresponding Authors: Fatemeh Adelnia; MedStar Harbor Hospital, 3001 S. Hanover Street, 5th Floor, Baltimore, MD; Phone: 410 350 7301; ; Luigi Ferrucci; Biomedical Research Center, 251 Bayview Boulevard, Suite 100, Phone: 410-558-8110;
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