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Elkrief D, Matusovsky O, Cheng YS, Rassier DE. From amino-acid to disease: the effects of oxidation on actin-myosin interactions in muscle. J Muscle Res Cell Motil 2023; 44:225-254. [PMID: 37805961 DOI: 10.1007/s10974-023-09658-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/15/2023] [Indexed: 10/10/2023]
Abstract
Actin-myosin interactions form the basis of the force-producing contraction cycle within the sarcomere, serving as the primary mechanism for muscle contraction. Post-translational modifications, such as oxidation, have a considerable impact on the mechanics of these interactions. Considering their widespread occurrence, the explicit contributions of these modifications to muscle function remain an active field of research. In this review, we aim to provide a comprehensive overview of the basic mechanics of the actin-myosin complex and elucidate the extent to which oxidation influences the contractile cycle and various mechanical characteristics of this complex at the single-molecule, myofibrillar and whole-muscle levels. We place particular focus on amino acids shown to be vulnerable to oxidation in actin, myosin, and some of their binding partners. Additionally, we highlight the differences between in vitro environments, where oxidation is controlled and limited to actin and myosin and myofibrillar or whole muscle environments, to foster a better understanding of oxidative modification in muscle. Thus, this review seeks to encompass a broad range of studies, aiming to lay out the multi layered effects of oxidation in in vitro and in vivo environments, with brief mention of clinical muscular disorders associated with oxidative stress.
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Affiliation(s)
- Daren Elkrief
- Department of Physiology, McGill University, Montreal, QC, Canada
| | - Oleg Matusovsky
- Department of Kinesiology and Physical Education, McGill University, Montreal, QC, Canada
| | - Yu-Shu Cheng
- Department of Kinesiology and Physical Education, McGill University, Montreal, QC, Canada
| | - Dilson E Rassier
- Department of Physiology, McGill University, Montreal, QC, Canada.
- Department of Kinesiology and Physical Education, McGill University, Montreal, QC, Canada.
- Simon Fraser University, Burnaby, BC, Canada.
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2
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Skeletal muscle and erythrocyte redox status is associated with dietary cysteine intake and physical fitness in healthy young physically active men. Eur J Nutr 2023; 62:1767-1782. [PMID: 36828945 DOI: 10.1007/s00394-023-03102-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 01/31/2023] [Indexed: 02/26/2023]
Abstract
PURPOSE To investigate the association between redox status in erythrocytes and skeletal muscle with dietary nutrient intake and markers of physical fitness and habitual physical activity (PA). METHODS Forty-five young physically active men were assessed for body composition, dietary nutrient intake, muscle strength, cardiorespiratory capacity and habitual PA. Blood and muscle samples were collected to estimate selected redox biomarkers. Partial correlation analysis was used to evaluate the independent relationship of each factor with redox biomarkers. RESULTS Dietary cysteine intake was positively correlated (p < 0.001) with both erythrocyte (r = 0.697) and muscle GSH (0.654, p < 0.001), erythrocyte reduced/oxidized glutathione ratio (GSH/GSSG) (r = 0.530, p = 0.001) and glutathione reductase (GR) activity (r = 0.352, p = 0.030) and inversely correlated with erythrocyte protein carbonyls (PC) levels (r = - 0.325; p = 0.046). Knee extensors eccentric peak torque was positively correlated with GR activity (r = 0.355; p = 0.031) while, one-repetition maximum in back squat exercise was positively correlated with erythrocyte GSH/GSSG ratio (r = 0.401; p = 0.014) and inversely correlated with erythrocyte GSSG and PC (r = - 0.441, p = 0.006; r = - 0.413, p = 0.011 respectively). Glutathione peroxidase (GPx) activity was positively correlated with step count (r = 0.520; p < 0.001), light (r = 0.406; p = 0.008), moderate (r = 0.417; p = 0.006), moderate-to-vigorous (r = 0.475; p = 0.001), vigorous (r = 0.352; p = 0.022) and very vigorous (r = 0.326; p = 0.035) PA. Muscle GSSG inversely correlated with light PA (r = - 0.353; p = 0.022). CONCLUSION These results indicate that dietary cysteine intake may be a critical element for the regulation of glutathione metabolism and redox status in two different tissues pinpointing the independent significance of cysteine for optimal redox regulation. Musculoskeletal fitness and PA levels may be predictors of skeletal muscle, but not erythrocyte, antioxidant capacity. TRIAL REGISTRATION Registry: ClinicalTrials.gov, identifier: NCT03711838, date of registration: October 19, 2018.
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3
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Supruniuk E, Górski J, Chabowski A. Endogenous and Exogenous Antioxidants in Skeletal Muscle Fatigue Development during Exercise. Antioxidants (Basel) 2023; 12:antiox12020501. [PMID: 36830059 PMCID: PMC9952836 DOI: 10.3390/antiox12020501] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/09/2023] [Accepted: 02/15/2023] [Indexed: 02/18/2023] Open
Abstract
Muscle fatigue is defined as a decrease in maximal force or power generated in response to contractile activity, and it is a risk factor for the development of musculoskeletal injuries. One of the many stressors imposed on skeletal muscle through exercise is the increased production of reactive oxygen species (ROS) and reactive nitrogen species (RNS), which intensifies as a function of exercise intensity and duration. Exposure to ROS/RNS can affect Na+/K+-ATPase activity, intramyofibrillar calcium turnover and sensitivity, and actin-myosin kinetics to reduce muscle force production. On the other hand, low ROS/RNS concentrations can likely upregulate an array of cellular adaptative responses related to mitochondrial biogenesis, glucose transport and muscle hypertrophy. Consequently, growing evidence suggests that exogenous antioxidant supplementation might hamper exercise-engendering upregulation in the signaling pathways of mitogen-activated protein kinases (MAPKs), peroxisome-proliferator activated co-activator 1α (PGC-1α), or mammalian target of rapamycin (mTOR). Ultimately, both high (exercise-induced) and low (antioxidant intervention) ROS concentrations can trigger beneficial responses as long as they do not override the threshold range for redox balance. The mechanisms underlying the two faces of ROS/RNS in exercise, as well as the role of antioxidants in muscle fatigue, are presented in detail in this review.
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Affiliation(s)
- Elżbieta Supruniuk
- Department of Physiology, Medical University of Białystok, 15-222 Białystok, Poland
- Correspondence: ; Tel.: +48-(85)-748-55-85
| | - Jan Górski
- Department of Medical Sciences, Academy of Applied Sciences, 18-400 Łomża, Poland
| | - Adrian Chabowski
- Department of Physiology, Medical University of Białystok, 15-222 Białystok, Poland
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4
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Redox Balance Differentially Affects Biomechanics in Permeabilized Single Muscle Fibres-Active and Passive Force Assessments with the Myorobot. Cells 2022; 11:cells11233715. [PMID: 36496975 PMCID: PMC9740451 DOI: 10.3390/cells11233715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/23/2022] Open
Abstract
An oxidizing redox state imposes unique effects on the contractile properties of muscle. Permeabilized fibres show reduced active force generation in the presence of H2O2. However, our knowledge about the muscle fibre's elasticity or flexibility is limited due to shortcomings in assessing the passive stress-strain properties, mostly due to technically limited experimental setups. The MyoRobot is an automated biomechatronics platform that is well-capable of not only investigating calcium responsiveness of active contraction but also features precise stretch actuation to examine the passive stress-strain behaviour. Both were carried out in a consecutive recording sequence on the same fibre for 10 single fibres in total. We denote a significantly diminished maximum calcium-saturated force for fibres exposed to ≥500 µM H2O2, with no marked alteration of the pCa50 value. In contrast to active contraction (e.g., maximum isometric force activation), passive restoration stress (force per area) significantly increases for fibres exposed to an oxidizing environment, as they showed a non-linear stress-strain relationship. Our data support the idea that a highly oxidizing environment promotes non-linear fibre stiffening and confirms that our MyoRobot platform is a suitable tool for investigating redox-related changes in muscle biomechanics.
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5
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Xu H, Ahn B, Van Remmen H. Impact of aging and oxidative stress on specific components of excitation contraction coupling in regulating force generation. SCIENCE ADVANCES 2022; 8:eadd7377. [PMID: 36288318 PMCID: PMC9604602 DOI: 10.1126/sciadv.add7377] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
Muscle weakness associated with sarcopenia is a major contributor to reduced health span and quality of life in the elderly. However, the underlying mechanisms of muscle weakness in aging are not fully defined. We investigated the effect of oxidative stress and aging on specific molecular mechanisms involved in muscle force production in mice and skinned permeabilized single fibers in mice lacking the antioxidant enzyme CuZnSod (Sod1KO) and in aging (24-month-old) wild-type mice. Loss of muscle strength occurs in both models, potentially because of reduced membrane excitability with altered NKA signaling and RyR stability, decreased fiber Ca2+ sensitivity and suppressed SERCA activity via modification of the Cys674 residue, dysregulated SR and cytosolic Ca2+ homeostasis, and impaired mitochondrial Ca2+ buffering and respiration. Our results provide a better understanding of the specific impacts of aging and oxidative stress on mechanisms related to muscle weakness that may point to future interventions for countering muscle weakness.
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Affiliation(s)
- Hongyang Xu
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Bumsoo Ahn
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Holly Van Remmen
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
- Oklahoma City VA Medical Center, Oklahoma City, OK, USA
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6
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Glutathione ethyl ester reverses the deleterious effects of fentanyl on ventilation and arterial blood-gas chemistry while prolonging fentanyl-induced analgesia. Sci Rep 2021; 11:6985. [PMID: 33772077 PMCID: PMC7997982 DOI: 10.1038/s41598-021-86458-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 03/16/2021] [Indexed: 02/01/2023] Open
Abstract
There is an urgent need to develop novel compounds that prevent the deleterious effects of opioids such as fentanyl on minute ventilation while, if possible, preserving the analgesic actions of the opioids. We report that L-glutathione ethyl ester (GSHee) may be such a novel compound. In this study, we measured tail flick latency (TFL), arterial blood gas (ABG) chemistry, Alveolar-arterial gradient, and ventilatory parameters by whole body plethysmography to determine the responses elicited by bolus injections of fentanyl (75 μg/kg, IV) in male adult Sprague-Dawley rats that had received a bolus injection of GSHee (100 μmol/kg, IV) 15 min previously. GSHee given alone had minimal effects on TFL, ABG chemistry and A-a gradient whereas it elicited changes in some ventilatory parameters such as an increase in breathing frequency. In vehicle-treated rats, fentanyl elicited (1) an increase in TFL, (2) decreases in pH, pO2 and sO2 and increases in pCO2 (all indicative of ventilatory depression), (3) an increase in Alveolar-arterial gradient (indicative of a mismatch in ventilation-perfusion in the lungs), and (4) changes in ventilatory parameters such as a reduction in tidal volume, that were indicative of pronounced ventilatory depression. In GSHee-pretreated rats, fentanyl elicited a more prolonged analgesia, relatively minor changes in ABG chemistry and Alveolar-arterial gradient, and a substantially milder depression of ventilation. GSHee may represent an effective member of a novel class of thiolester drugs that are able to prevent the ventilatory depressant effects elicited by powerful opioids such as fentanyl and their deleterious effects on gas-exchange in the lungs without compromising opioid analgesia.
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7
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Doma K, Devantier-Thomas B, Gahreman D, Connor J. Selected root plant supplementation reduces indices of exercise-induced muscle damage: A systematic review and meta-analysis. INT J VITAM NUTR RES 2020; 92:448-468. [PMID: 33196371 DOI: 10.1024/0300-9831/a000689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This systematic review and meta-analysis examined the effects of selected root plants (curcumin, ginseng, ginger and garlic) on markers of muscle damage and muscular performance measures following muscle-damaging protocols. We included 25 studies (parallel and crossover design) with 353 participants and used the PEDro scale to appraise each study. Forest plots were generated to report on standardised mean differences (SMD) and p-values at 24 and 48 hours following the muscle-damaging protocols. The meta-analysis showed that the supplemental (SUPP) condition showed significantly lower levels of indirect muscle damage markers (creatine kinase, lactate dehydrogenase and myoglobin) and muscle soreness at 24 hours and 48 hours (p < 0.01) than the placebo (PLA) condition. The inflammatory markers were significantly lower for the SUPP condition than the PLA condition at 24 hours (p = 0.02), although no differences were identified at 48 hours (p = 0.40). There were no significant differences in muscular performance measures between the SUPP and PLA conditions at 24 hours and 48 hours (p > 0.05) post-exercise. According to our qualitative data, a number of studies reported a reduction in oxidative stress (e.g., malondialdehyde, superoxide dismutase) with a concomitant upregulation of anti-oxidant status, although other studies showed no effects. Accordingly, selected root plants minimised the level of several biomarkers of muscle damage, inflammation and muscle soreness during periods of exercise-induced muscle damage. However, the benefits of these supplements in ameliorating oxidative stress, increasing anti-oxidant status and accelerating recovery of muscular performance appears equivocal, warranting further research in these outcome measures.
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Affiliation(s)
- Kenji Doma
- College of Healthcare Sciences, James Cook University, Townsville, Australia
| | | | - Daniel Gahreman
- College of Health and Human Sciences, Charles Darwin University, Darwin, Australia
| | - Jonathan Connor
- College of Healthcare Sciences, James Cook University, Townsville, Australia
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8
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Margaritelis NV, Chatzinikolaou PN, Bousiou FV, Malliou VJ, Papadopoulou SK, Potsaki P, Theodorou AA, Kyparos A, Geladas ND, Nikolaidis MG, Paschalis V. Dietary Cysteine Intake is Associated with Blood Glutathione Levels and Isometric Strength. Int J Sports Med 2020; 42:441-447. [PMID: 33124012 DOI: 10.1055/a-1255-2863] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Glutathione is the most abundant cellular antioxidant and regulates redox homeostasis. Healthy individuals with certain antioxidant inadequacies/deficiencies exhibit impairments in physiological functions. The aim was to investigate whether low levels of dietary cysteine intake are associated with a) lower erythrocyte glutathione, b) increased plasma F2-isoprostanes, and c) impaired muscle function. Towards this aim, we recorded the dietary intake of the three amino acids that synthesize glutathione (i. e., glutamic acid, cysteine, and glycine) in forty-one healthy individuals, and subsequently measured erythrocyte glutathione levels. Maximal isometric strength and fatigue index were also assessed using an electronic handgrip dynamometer. Our findings indicate that dietary cysteine intake was positively correlated with glutathione levels (r=0.765, p<0.001). In addition, glutathione levels were negatively correlated with F2-isoprostanes (r=- 0.311, p=0.048). An interesting finding was that glutathione levels and cysteine intake were positively correlated with maximal handgrip strength (r=0.416, p=0.007 and r=0.343, p=0.028, respectively). In conclusion, glutathione concentration is associated with cysteine intake, while adequate cysteine levels were important for optimal redox status and muscle function. This highlights the importance of proper nutritional intake and biochemical screening with the goal of personalized nutrition.
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Affiliation(s)
- Nikos V Margaritelis
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Greece
| | - Panagiotis N Chatzinikolaou
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Greece.,Department of Rehabilitation Sciences, KU Leuven, Leuven, Belgium
| | - Flora V Bousiou
- Department of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
| | - Vasiliki J Malliou
- Department of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
| | - Sousana K Papadopoulou
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Thessaloniki, Greece
| | - Panagiota Potsaki
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Thessaloniki, Greece
| | | | - Antonios Kyparos
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Greece
| | - Nikos D Geladas
- Department of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
| | - Michalis G Nikolaidis
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Greece
| | - Vassilis Paschalis
- Department of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
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9
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Aibara C, Okada N, Watanabe D, Shi J, Wada M. Effects of high-intensity interval exercise on muscle fatigue and SR function in rats: a comparison with moderate-intensity continuous exercise. J Appl Physiol (1985) 2020; 129:343-352. [DOI: 10.1152/japplphysiol.00223.2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Over the past decade, high-intensity interval exercise (HIIE) training has received attention as a more efficient training to improve endurance capacity. It is unclear, however, whether the extent of acute exercise-related muscle fatigue differs between HIIE and moderate-intensity continuous exercise, traditional endurance training. Here we provide evidence that restoration of force production takes a longer time after HIIE, which is ascribable to long-lasting depressions in Ca2+ release of the sarcoplasmic reticulum.
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Affiliation(s)
- Chihiro Aibara
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan
| | - Naoki Okada
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan
| | - Daiki Watanabe
- Graduate School of Humanities and Social Sciences, Hiroshima University, Hiroshima, Japan
| | - Jiayu Shi
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan
| | - Masanobu Wada
- Graduate School of Humanities and Social Sciences, Hiroshima University, Hiroshima, Japan
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10
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Doma K, Gahreman D, Connor J. Fruit supplementation reduces indices of exercise-induced muscle damage: a systematic review and meta-analysis. Eur J Sport Sci 2020; 21:562-579. [PMID: 32460679 DOI: 10.1080/17461391.2020.1775895] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
This systematic review and meta-analysis examined the effects of fruit supplements on indices of muscle damage and physical performance measures following muscle-damaging exercise protocols. The PEDro scale and Cochrane's risk of bias tool was used to critically appraise each study, whilst forest plots were generated to report on standardised mean differences (SMD) and p-values. The studies employed a crossover-randomised design, or a randomised controlled placebo design, with measures compared between the supplement (SUPP) and placebo (PLA) conditions at 24 and 48 h following the muscle-damaging exercise protocols. Compared to the PLA condition, the SUPP condition exhibited significantly lower levels of indirect muscle damage markers (p = 0.02; I2 = 44%), inflammatory markers (p = 0.03; I2 = 45%) and oxidative stress (p < 0.001; I2 = 58%), whilst antioxidant capacity was significantly increased (p = 0.04; I2 = 82%) at 24 h post-exercise. The maximal isometric voluntary contraction was significantly greater for the SUPP condition than the PLA at 24 h (p < 0.001; I2 = 81%) and 48 h (p < 0.001; 84%) post-exercise. Only a few studies reported on functional outcome measures (i.e. countermovement jump, cycling, sprint and running maximal oxygen uptake), and the findings appeared conflicting according to qualitative analyses. Fruit supplementation minimised the level of several biomarkers of muscle damage, inflammation and oxidative stress, whilst improved muscular contractility during periods of EIMD. These findings demonstrate that fruit supplements could be used as recovery strategies from strenuous exercise sessions.
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Affiliation(s)
- Kenji Doma
- College of Healthcare Sciences, James Cook University, Townsville, Australia
| | - Daniel Gahreman
- College of Health and Human Sciences, Charles Darwin University, Darwin, Australia
| | - Jonathan Connor
- College of Healthcare Sciences, James Cook University, Townsville, Australia
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11
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Targeting reactive oxygen species (ROS) to combat the age-related loss of muscle mass and function. Biogerontology 2020; 21:475-484. [PMID: 32447556 PMCID: PMC7347670 DOI: 10.1007/s10522-020-09883-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 05/12/2020] [Indexed: 02/07/2023]
Abstract
The loss of muscle mass and function with age, termed sarcopenia, is an inevitable process, which has a significant impact on quality of life. During ageing we observe a progressive loss of total muscle fibres and a reduction in cross-sectional area of the remaining fibres, resulting in a significant reduction in force output. The mechanisms which underpin sarcopenia are complex and poorly understood, ranging from inflammation, dysregulation of protein metabolism and denervation. However, there is significant evidence to demonstrate that modified ROS generation, redox dis-homeostasis and mitochondrial dysfunction may have an important role to play. Based on this, significant interest and research has interrogated potential ROS-targeted therapies, ranging from nutritional-based interventions such as vitamin E/C, polyphenols (resveratrol) and targeted pharmacological compounds, using molecules such as SS-31 and MitoQ. In this review we evaluate these approaches to target aberrant age-related ROS generation and the impact on muscle mass and function.
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12
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Lamboley CR, Rouffet DM, Dutka TL, McKenna MJ, Lamb GD. Effects of high-intensity intermittent exercise on the contractile properties of human type I and type II skeletal muscle fibers. J Appl Physiol (1985) 2020; 128:1207-1216. [PMID: 32213115 DOI: 10.1152/japplphysiol.00014.2020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In vitro studies have shown that alterations in redox state can cause a range of opposing effects on the properties of the contractile apparatus in skeletal muscle fibers. To test whether and how redox changes occurring in vivo affect the contractile properties, vastus lateralis muscle fibers from seven healthy young adults were examined at rest (PRE) and following (POST) high-intensity intermittent cycling exercise. Individual mechanically skinned muscle fibers were exposed to heavily buffered solutions at progressively higher free [Ca2+] to determine their force-Ca2+ relationship. Following acute exercise, Ca2+ sensitivity was significantly decreased in type I fibers (by 0.06 pCa unit) but not in type II fibers (0.01 pCa unit). Specific force decreased after the exercise in type II fibers (-18%) but was unchanged in type I fibers. Treatment with the reducing agent dithiothreitol (DTT) caused a small decrease in Ca2+-sensitivity in type II fibers at PRE (by ∼0.014 pCa units) and a significantly larger decrease at POST (∼0.035 pCa units), indicating that the exercise had increased S-glutathionylation of fast troponin I. DTT treatment also increased specific force (by ∼4%), but only at POST. In contrast, DTT treatment had no effect on either parameter in type I fibers at either PRE or POST. In type I fibers, the decreased Ca2+ sensitivity was not due to reversible oxidative changes and may have contributed to a decrease in power production during vigorous exercises. In type II fibers, exercise-induced redox changes help counter the decline in Ca2+-sensitivity while causing a small decline in maximum force.NEW & NOTEWORTHY This study identified important cellular changes occurring in human skeletal muscle fibers following high-intensity intermittent exercise: 1) a decrease in contractile apparatus Ca2+ sensitivity in type I but not type II fibers, 2) a decrease in specific force only in type II muscle fibers, and 3) a redox-dependent increase in Ca2+ sensitivity occurring only in type II fibers, which would help maintain muscle performance by countering the normal metabolite-induced decline in Ca2+ sensitivity.
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Affiliation(s)
- Cedric R Lamboley
- Institute for Health and Sport, Victoria University, Melbourne, Victoria, Australia.,School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
| | - David M Rouffet
- Institute for Health and Sport, Victoria University, Melbourne, Victoria, Australia.,Department of Health and Sport Sciences, Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, Kentucky
| | - Travis L Dutka
- School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
| | - Michael J McKenna
- Institute for Health and Sport, Victoria University, Melbourne, Victoria, Australia
| | - Graham D Lamb
- School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
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13
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Abstract
Redox reactions control fundamental processes of human biology. Therefore, it is safe to assume that the responses and adaptations to exercise are, at least in part, mediated by redox reactions. In this review, we are trying to show that redox reactions are the basis of exercise physiology by outlining the redox signaling pathways that regulate four characteristic acute exercise-induced responses (muscle contractile function, glucose uptake, blood flow and bioenergetics) and four chronic exercise-induced adaptations (mitochondrial biogenesis, muscle hypertrophy, angiogenesis and redox homeostasis). Based on our analysis, we argue that redox regulation should be acknowledged as central to exercise physiology.
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14
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Cheng AJ, Jude B, Lanner JT. Intramuscular mechanisms of overtraining. Redox Biol 2020; 35:101480. [PMID: 32179050 PMCID: PMC7284919 DOI: 10.1016/j.redox.2020.101480] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/08/2020] [Accepted: 02/24/2020] [Indexed: 01/04/2023] Open
Abstract
Strenuous exercise is a potent stimulus to induce beneficial skeletal muscle adaptations, ranging from increased endurance due to mitochondrial biogenesis and angiogenesis, to increased strength from hypertrophy. While exercise is necessary to trigger and stimulate muscle adaptations, the post-exercise recovery period is equally critical in providing sufficient time for metabolic and structural adaptations to occur within skeletal muscle. These cyclical periods between exhausting exercise and recovery form the basis of any effective exercise training prescription to improve muscle endurance and strength. However, imbalance between the fatigue induced from intense training/competitions, and inadequate post-exercise/competition recovery periods can lead to a decline in physical performance. In fact, prolonged periods of this imbalance may eventually lead to extended periods of performance impairment, referred to as the state of overreaching that may progress into overtraining syndrome (OTS). OTS may have devastating implications on an athlete's career and the purpose of this review is to discuss potential underlying mechanisms that may contribute to exercise-induced OTS in skeletal muscle. First, we discuss the conditions that lead to OTS, and their potential contributions to impaired skeletal muscle function. Then we assess the evidence to support or refute the major proposed mechanisms underlying skeletal muscle weakness in OTS: 1) glycogen depletion hypothesis, 2) muscle damage hypothesis, 3) inflammation hypothesis, and 4) the oxidative stress hypothesis. Current data implicates reactive oxygen and nitrogen species (ROS) and inflammatory pathways as the most likely mechanisms contributing to OTS in skeletal muscle. Finally, we allude to potential interventions that can mitigate OTS in skeletal muscle.
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Affiliation(s)
- Arthur J Cheng
- York University, Faculty of Health/ School of Kinesiology and Health Sciences, Muscle Health Research Centre/ Muscle Calcium Dynamics Lab, 351 Farquharson Life Sciences Building, Toronto, M3J 1P3, Canada
| | - Baptiste Jude
- Karolinska Institutet, Department of Physiology and Pharmacology, Molecular Muscle Physiology and Pathophysiology laboratory, Biomedicum C5, 17177, Stockholm, Sweden
| | - Johanna T Lanner
- Karolinska Institutet, Department of Physiology and Pharmacology, Molecular Muscle Physiology and Pathophysiology laboratory, Biomedicum C5, 17177, Stockholm, Sweden.
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15
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Diaphragm weakness and proteomics (global and redox) modifications in heart failure with reduced ejection fraction in rats. J Mol Cell Cardiol 2020; 139:238-249. [PMID: 32035137 DOI: 10.1016/j.yjmcc.2020.02.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/02/2020] [Accepted: 02/03/2020] [Indexed: 12/16/2022]
Abstract
Inspiratory dysfunction occurs in patients with heart failure with reduced ejection fraction (HFrEF) in a manner that depends on disease severity and by mechanisms that are not fully understood. In the current study, we tested whether HFrEF effects on diaphragm (inspiratory muscle) depend on disease severity and examined putative mechanisms for diaphragm abnormalities via global and redox proteomics. We allocated male rats into Sham, moderate (mHFrEF), or severe HFrEF (sHFrEF) induced by myocardial infarction and examined the diaphragm muscle. Both mHFrEF and sHFrEF caused atrophy in type IIa and IIb/x fibers. Maximal and twitch specific forces (N/cm2) were decreased by 19 ± 10% and 28 ± 13%, respectively, in sHFrEF (p < .05), but not in mHFrEF. Global proteomics revealed upregulation of sarcomeric proteins and downregulation of ribosomal and glucose metabolism proteins in sHFrEF. Redox proteomics showed that sHFrEF increased reversibly oxidized cysteine in cytoskeletal and thin filament proteins and methionine in skeletal muscle α-actin (range 0.5 to 3.3-fold; p < .05). In conclusion, fiber atrophy plus contractile dysfunction caused diaphragm weakness in HFrEF. Decreased ribosomal proteins and heighted reversible oxidation of protein thiols are candidate mechanisms for atrophy or anabolic resistance as well as loss of specific force in sHFrEF.
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16
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Olsson K, Cheng AJ, Al‐Ameri M, Wyckelsma VL, Rullman E, Westerblad H, Lanner JT, Gustafsson T, Bruton JD. Impaired sarcoplasmic reticulum Ca2+release is the major cause of fatigue‐induced force loss in intact single fibres from human intercostal muscle. J Physiol 2019; 598:773-787. [DOI: 10.1113/jp279090] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 11/22/2019] [Indexed: 12/15/2022] Open
Affiliation(s)
- Karl Olsson
- Department of Laboratory MedicineSection of Clinical PhysiologyKarolinska Institutet Alfred Nobels Allé 8 141 52 Huddinge Sweden
| | - Arthur J. Cheng
- Department of Physiology and PharmacologyBiomedicum C5Karolinska Institutet Tomtebodavägen 16 Solna 171 65 Sweden
- School of Kinesiology and Health ScienceFaculty of HealthYork University 4700 Keele Street Toronto Canada M3J 1P3
| | - Mamdoh Al‐Ameri
- Department of Molecular Medicine and SurgeryKarolinska InstitutetKarolinska University Hospital Solna 171 76 Stockholm Sweden
| | - Victoria L. Wyckelsma
- Department of Physiology and PharmacologyBiomedicum C5Karolinska Institutet Tomtebodavägen 16 Solna 171 65 Sweden
| | - Eric Rullman
- Department of Laboratory MedicineSection of Clinical PhysiologyKarolinska Institutet Alfred Nobels Allé 8 141 52 Huddinge Sweden
| | - Håkan Westerblad
- Department of Physiology and PharmacologyBiomedicum C5Karolinska Institutet Tomtebodavägen 16 Solna 171 65 Sweden
| | - Johanna T. Lanner
- Department of Physiology and PharmacologyBiomedicum C5Karolinska Institutet Tomtebodavägen 16 Solna 171 65 Sweden
| | - Thomas Gustafsson
- Department of Laboratory MedicineSection of Clinical PhysiologyKarolinska Institutet Alfred Nobels Allé 8 141 52 Huddinge Sweden
| | - Joseph D. Bruton
- Department of Physiology and PharmacologyBiomedicum C5Karolinska Institutet Tomtebodavägen 16 Solna 171 65 Sweden
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17
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Watanabe D, Aibara C, Wada M. Treatment with EUK-134 improves sarcoplasmic reticulum Ca2+ release but not myofibrillar Ca2+ sensitivity after fatiguing contraction of rat fast-twitch muscle. Am J Physiol Regul Integr Comp Physiol 2019; 316:R543-R551. [DOI: 10.1152/ajpregu.00387.2018] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Skeletal muscles undergoing vigorous activity can enter a state of prolonged low-frequency force depression (PLFFD). This study was conducted to examine whether antioxidant treatment is capable of accelerating the recovery from PLFFD, with a focus on the function of the sarcoplasmic reticulum (SR) and myofibril. One hour before fatiguing stimulation (FS) was administered, rats received an intraperitoneal injection of Eukarion (EUK-134), which mimics the activities of superoxide dismutase and catalase. Intact muscles of the hindlimbs were electrically stimulated via the sciatic nerve until the force was reduced to ~50% of the initial force (FS). Thirty minutes after cessation of FS, the superficial regions of gastrocnemius muscles were dissected and used for biochemical and skinned-fiber analyses. Whole muscle analyses revealed that antioxidant alleviated the FS-induced decrease in the reduced glutathione content. Skinned-fiber analyses showed that the antioxidant did not affect the FS-induced decrease in the ratio of force at 1 Hz to that at 50 Hz. However, the antioxidant partially inhibited the FS-mediated decrease in the ratio of depolarization-induced force to the maximum Ca2+-activated force. Furthermore, the antioxidant completely suppressed the FS-induced increase in myofibrillar Ca2+ sensitivity. These results suggest that antioxidant treatment is ineffective in facilitating the restoration of PLFFD, probably due to its negative effect on myofibrillar Ca2+ sensitivity, which supersedes its positive effect on SR Ca2+ release.
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Affiliation(s)
- Daiki Watanabe
- Department of Engineering Science, University of Electro-Communication, Tokyo, Japan
| | - Chihiro Aibara
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan
| | - Masanobu Wada
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan
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18
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Andrich DE, Melbouci L, Ou Y, Auclair N, Mercier J, Grenier JC, Lira FS, Barreiro LB, Danialou G, Comtois AS, Lavoie JC, St-Pierre DH. A Short-Term High-Fat Diet Alters Glutathione Levels and IL-6 Gene Expression in Oxidative Skeletal Muscles of Young Rats. Front Physiol 2019; 10:372. [PMID: 31024337 PMCID: PMC6468044 DOI: 10.3389/fphys.2019.00372] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 03/18/2019] [Indexed: 01/03/2023] Open
Abstract
Obesity and ensuing disorders are increasingly prevalent worldwide. High-fat diets (HFD) and diet-induced obesity have been shown to induce oxidative stress and inflammation while altering metabolic homeostasis in many organs, including the skeletal muscle. We previously observed that 14 days of HFD impairs contractile functions of the soleus (SOL) oxidative skeletal muscle. However, the mechanisms underlying these effects are not clarified. In order to determine the effects of a short-term HFD on skeletal muscle glutathione metabolism, young male Wistar rats (100–125 g) were fed HFD or a regular chow diet (RCD) for 14 days. Reduced (GSH) and disulfide (GSSG) glutathione levels were measured in the SOL. The expression of genes involved in the regulation of glutathione metabolism, oxidative stress, antioxidant defense and inflammation were measured by RNA-Seq. We observed a significant 25% decrease of GSH levels in the SOL muscle. Levels of GSSG and the GSH:GSSG ratio were similar in both groups. Further, we observed a 4.5 fold increase in the expression of pro-inflammatory cytokine interleukin 6 (IL-6) but not of other cytokines or markers of inflammation and oxidative stress. We hereby demonstrate that a short-term HFD significantly lowers SOL muscle GSH levels. This effect could be mediated through the increased expression of IL-6. Further, the skeletal muscle antioxidant defense could be impaired under cellular stress. We surmise that these early alterations could contribute to HFD-induced insulin resistance observed in longer protocols.
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Affiliation(s)
- David E Andrich
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Groupe de Recherche en Activité Physique Adaptée (GRAPA), Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Département des Sciences Biologiques, Université du Québec à Montréal (UQAM), Montréal, QC, Canada
| | - Lilya Melbouci
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Groupe de Recherche en Activité Physique Adaptée (GRAPA), Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Centre de Recherche du CHU Sainte-Justine, Montréal, QC, Canada
| | - Ya Ou
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Groupe de Recherche en Activité Physique Adaptée (GRAPA), Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Centre de Recherche du CHU Sainte-Justine, Montréal, QC, Canada
| | - Nickolas Auclair
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Groupe de Recherche en Activité Physique Adaptée (GRAPA), Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Centre de Recherche du CHU Sainte-Justine, Montréal, QC, Canada
| | - Jocelyne Mercier
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Groupe de Recherche en Activité Physique Adaptée (GRAPA), Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Centre de Recherche du CHU Sainte-Justine, Montréal, QC, Canada
| | | | - Fábio Santos Lira
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Groupe de Recherche en Activité Physique Adaptée (GRAPA), Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Department of Physical Education, São Paulo State University, São Paulo, Brazil
| | - Luis B Barreiro
- Centre de Recherche du CHU Sainte-Justine, Montréal, QC, Canada.,Département de Pédiatrie, Faculté de Médecine, Université de Montréal, Montréal, QC, Canada
| | - Gawiyou Danialou
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Royal Military College Saint-Jean, Saint-Jean-sur-Richelieu, QC, Canada
| | - Alain-Steve Comtois
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Groupe de Recherche en Activité Physique Adaptée (GRAPA), Université du Québec à Montréal (UQAM), Montréal, QC, Canada
| | - Jean-Claude Lavoie
- Centre de Recherche du CHU Sainte-Justine, Montréal, QC, Canada.,Département de Nutrition, Faculté de Médecine, Université de Montréal, Montréal, QC, Canada
| | - David H St-Pierre
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Groupe de Recherche en Activité Physique Adaptée (GRAPA), Université du Québec à Montréal (UQAM), Montréal, QC, Canada.,Centre de Recherche du CHU Sainte-Justine, Montréal, QC, Canada
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19
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Olthoff JT, Lindsay A, Abo-Zahrah R, Baltgalvis KA, Patrinostro X, Belanto JJ, Yu DY, Perrin BJ, Garry DJ, Rodney GG, Lowe DA, Ervasti JM. Loss of peroxiredoxin-2 exacerbates eccentric contraction-induced force loss in dystrophin-deficient muscle. Nat Commun 2018; 9:5104. [PMID: 30504831 PMCID: PMC6269445 DOI: 10.1038/s41467-018-07639-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 11/14/2018] [Indexed: 12/28/2022] Open
Abstract
Force loss in skeletal muscle exposed to eccentric contraction is often attributed to injury. We show that EDL muscles from dystrophin-deficient mdx mice recover 65% of lost force within 120 min of eccentric contraction and exhibit minimal force loss when the interval between contractions is increased from 3 to 30 min. A proteomic screen of mdx muscle identified an 80% reduction in the antioxidant peroxiredoxin-2, likely due to proteolytic degradation following hyperoxidation by NADPH Oxidase 2. Eccentric contraction-induced force loss in mdx muscle was exacerbated by peroxiredoxin-2 ablation, and improved by peroxiredoxin-2 overexpression or myoglobin knockout. Finally, overexpression of γcyto- or βcyto-actin protects mdx muscle from eccentric contraction-induced force loss by blocking NADPH Oxidase 2 through a mechanism dependent on cysteine 272 unique to cytoplasmic actins. Our data suggest that eccentric contraction-induced force loss may function as an adaptive circuit breaker that protects mdx muscle from injurious contractions.
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Affiliation(s)
- John T Olthoff
- Molecular, Cellular, Developmental Biology, and Genetics Graduate Program, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Angus Lindsay
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Reem Abo-Zahrah
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Kristen A Baltgalvis
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Xiaobai Patrinostro
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Joseph J Belanto
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Dae-Yeul Yu
- Aging Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Benjamin J Perrin
- Department of Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46022, USA
| | - Daniel J Garry
- Lillehei Heart Institute and Department of Medicine, University of Minnesota, Minneapolis, MN, 55455, USA
| | - George G Rodney
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Dawn A Lowe
- Divisions of Rehabilitation Science and Physical Therapy, Department of Rehabilitation Medicine, University of Minnesota, Minneapolis, MN, 55455, USA
| | - James M Ervasti
- Molecular, Cellular, Developmental Biology, and Genetics Graduate Program, University of Minnesota, Minneapolis, MN, 55455, USA.
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN, 55455, USA.
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20
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Hydrogen Peroxide Treatment of Muscle Fibres Inhibits the Formation of Myosin Cross-Bridges. Bull Exp Biol Med 2018; 166:183-187. [DOI: 10.1007/s10517-018-4310-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Indexed: 10/27/2022]
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21
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Watanabe D, Aibara C, Okada N, Wada M. Thermal pretreatment facilitates recovery from prolonged low-frequency force depression in rat fast-twitch muscle. Physiol Rep 2018; 6:e13853. [PMID: 30175495 PMCID: PMC6119698 DOI: 10.14814/phy2.13853] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/08/2018] [Accepted: 08/10/2018] [Indexed: 01/22/2023] Open
Abstract
The aim of this study was to examine whether thermal pretreatment can accelerate recovery from prolonged low-frequency force depression. The hindlimbs of thermal treated (T-treated) rats were immersed in water heated to 42.0°C for 20 min (thermal pretreatment). The thermal pretreatment was performed once a day for 5 days before fatiguing stimulation. Intact gastrocnemius muscles were electrically stimulated via the sciatic nerve until force was reduced to ~50% of the initial and dissected immediately [recovery 0 (REC0)] or 60 min [recovery 60 (REC60)] following the cessation of stimulation. Using skinned fiber prepared from the superficial region, the ratio of force at 1 Hz to that at 50 Hz (low-to-high force ratio), the ratio of depolarization (depol)-induced force to maximum Ca2+ -activated force (depol/max Ca2+ force ratio), the steepness of force-Ca2+ concentration curves, and myofibrillar Ca2+ sensitivity were measured. At REC0, the low-to-high force ratio and depol/max Ca2+ force ratio decreased in stimulated muscles from both non- and thermal-treated rats. At REC60, these two parameters remained depressed in non-treated rats, whereas they reverted to resting levels in T-treated rats. Thermal pretreatment exerted no effect on myofibrillar Ca2+ sensitivity. The present results reveal that thermal pretreatment can facilitate recovery of submaximum force after vigorous contraction, which is mediated via a quick return of Ca2+ release from the sarcoplasmic reticulum to resting levels.
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Affiliation(s)
- Daiki Watanabe
- Graduate School of Integrated Arts and SciencesHiroshima UniversityHiroshimaJapan
- Research Fellow of Japan Society for the Promotion of ScienceTokyoJapan
| | - Chihiro Aibara
- Graduate School of Integrated Arts and SciencesHiroshima UniversityHiroshimaJapan
| | - Naoki Okada
- Graduate School of Integrated Arts and SciencesHiroshima UniversityHiroshimaJapan
| | - Masanobu Wada
- Graduate School of Integrated Arts and SciencesHiroshima UniversityHiroshimaJapan
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22
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Kopylova GV, Shchepkin DV, Bershitsky SY. The Effect of Experimental Hyperthyroidism on Characteristics of Actin–Myosin Interaction in Fast and Slow Skeletal Muscles. BIOCHEMISTRY (MOSCOW) 2018; 83:527-533. [DOI: 10.1134/s000629791805005x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Greising SM, Ottenheijm CAC, O'Halloran KD, Barreiro E. Diaphragm plasticity in aging and disease: therapies for muscle weakness go from strength to strength. J Appl Physiol (1985) 2018; 125:243-253. [PMID: 29672230 DOI: 10.1152/japplphysiol.01059.2017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The diaphragm is the main inspiratory muscle and is required to be highly active throughout the life span. The diaphragm muscle must be able to produce and sustain various behaviors that range from ventilatory to nonventilatory such as those required for airway maintenance and clearance. Throughout the life span various circumstances and conditions may affect the ability of the diaphragm muscle to generate requisite forces, and in turn the diaphragm muscle may undergo significant weakness and dysfunction. For example, hypoxic stress, critical illness, cancer cachexia, chronic obstructive pulmonary disorder, and age-related sarcopenia all represent conditions in which significant diaphragm muscle dysfunction exits. This perspective review article presents several interesting topics involving diaphragm plasticity in aging and disease that were presented at the International Union of Physiological Sciences Conference in 2017. This review seeks to maximize the broad and collective research impact on diaphragm muscle dysfunction in the search for transformative treatment approaches to improve the diaphragm muscle health during aging and disease.
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Affiliation(s)
- Sarah M Greising
- Department of Physiology and Biomedical Engineering, Mayo Clinic , Rochester, Minnesota.,School of Kinesiology, University of Minnesota , Minneapolis, Minnesota
| | - Coen A C Ottenheijm
- Department of Physiology, VU University Medical Center , Amsterdam , The Netherlands.,Cellular and Molecular Medicine, University of Arizona , Tucson, Arizona
| | - Ken D O'Halloran
- Department of Physiology, University College Cork , Cork , Ireland
| | - Esther Barreiro
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, IMIM-Hospital del Mar, Parc de Salut Mar, Health and Experimental Sciences Department, Universitat Pompeu Fabra, Barcelona Biomedical Research Park, Barcelona , Spain.,Centro de Investigación en Red de Enfermedades Respiratorias, Instituto de Salud Carlos III , Barcelona , Spain
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24
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Sakellariou GK, McDonagh B. Redox Homeostasis in Age-Related Muscle Atrophy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1088:281-306. [PMID: 30390257 DOI: 10.1007/978-981-13-1435-3_13] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Muscle atrophy and weakness, characterized by loss of lean muscle mass and function, has a significant effect on the independence and quality of life of older people. The cellular mechanisms that drive the age-related decline in neuromuscular integrity and function are multifactorial. Quiescent and contracting skeletal muscle can endogenously generate reactive oxygen and nitrogen species (RONS) from various cellular sites. Excessive RONS can potentially cause oxidative damage and disruption of cellular signaling pathways contributing to the initiation and progression of age-related muscle atrophy. Altered redox homeostasis and modulation of intracellular signal transduction processes have been proposed as an underlying mechanism of sarcopenia. This chapter summarizes the current evidence that has associated disrupted redox homeostasis and muscle atrophy as a result of skeletal muscle inactivity and aging.
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Affiliation(s)
| | - Brian McDonagh
- Discipline of Physiology, School of Medicine, NUI Galway, Galway, Ireland
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25
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Bódi B, Tóth EP, Nagy L, Tóth A, Mártha L, Kovács Á, Balla G, Kovács T, Papp Z. Titin isoforms are increasingly protected against oxidative modifications in developing rat cardiomyocytes. Free Radic Biol Med 2017; 113:224-235. [PMID: 28943453 DOI: 10.1016/j.freeradbiomed.2017.09.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 09/15/2017] [Accepted: 09/18/2017] [Indexed: 12/18/2022]
Abstract
During the perinatal adaptation process N2BA titin isoforms are switched for N2B titin isoforms leading to an increase in cardiomyocyte passive tension (Fpassive). Here we attempted to reveal how titin isoform composition and oxidative insults (i.e. sulfhydryl (SH)-group oxidation or carbonylation) influence Fpassive of left ventricular (LV) cardiomyocytes during rat heart development. Moreover, we also examined a hypothetical protective role for titin associated small heat shock proteins (sHSPs), Hsp27 and αB-crystallin in the above processes. Single, permeabilized LV cardiomyocytes of the rat (at various ages following birth) were exposed either to 2,2'-dithiodipyridine (DTDP) to provoke SH-oxidation or Fenton reaction reagents (iron(II), hydrogen peroxide (H2O2), ascorbic acid) to induce protein carbonylation of cardiomyocytes in vitro. Thereafter, cardiomyocyte force measurements for Fpassive determinations and Western immunoblot assays were carried out for the semiquantitative determination of oxidized SH-groups or carbonyl-groups of titin isoforms and to monitor sHSPs' expressions. DTDP or Fenton reagents increased Fpassive in 0- and 7-day-old rats to relatively higher extents than in 21-day-old and adult animals. The degrees of SH-group oxidation or carbonylation declined with cardiomyocyte age to similar extents for both titin isoforms. Moreover, the above characteristics were mirrored by increasing levels of HSP27 and αB-crystallin expressions during cardiomyocyte development. Our data implicate a gradual build-up of a protective mechanism against titin oxidation through the upregulation of HSP27 and αB-crystallin expressions during postnatal cardiomyocyte development.
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Affiliation(s)
- Beáta Bódi
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Enikő Pásztorné Tóth
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - László Nagy
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Attila Tóth
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary; HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, Debrecen, Hungary
| | - Lilla Mártha
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Árpád Kovács
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - György Balla
- HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, Debrecen, Hungary; Department of Pediatrics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Tamás Kovács
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zoltán Papp
- Division of Clinical Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary; HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, Debrecen, Hungary.
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26
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Sakellariou GK, Lightfoot AP, Earl KE, Stofanko M, McDonagh B. Redox homeostasis and age-related deficits in neuromuscular integrity and function. J Cachexia Sarcopenia Muscle 2017; 8:881-906. [PMID: 28744984 PMCID: PMC5700439 DOI: 10.1002/jcsm.12223] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 04/06/2017] [Accepted: 05/22/2017] [Indexed: 12/25/2022] Open
Abstract
Skeletal muscle is a major site of metabolic activity and is the most abundant tissue in the human body. Age-related muscle atrophy (sarcopenia) and weakness, characterized by progressive loss of lean muscle mass and function, is a major contributor to morbidity and has a profound effect on the quality of life of older people. With a continuously growing older population (estimated 2 billion of people aged >60 by 2050), demand for medical and social care due to functional deficits, associated with neuromuscular ageing, will inevitably increase. Despite the importance of this 'epidemic' problem, the primary biochemical and molecular mechanisms underlying age-related deficits in neuromuscular integrity and function have not been fully determined. Skeletal muscle generates reactive oxygen and nitrogen species (RONS) from a variety of subcellular sources, and age-associated oxidative damage has been suggested to be a major factor contributing to the initiation and progression of muscle atrophy inherent with ageing. RONS can modulate a variety of intracellular signal transduction processes, and disruption of these events over time due to altered redox control has been proposed as an underlying mechanism of ageing. The role of oxidants in ageing has been extensively examined in different model organisms that have undergone genetic manipulations with inconsistent findings. Transgenic and knockout rodent studies have provided insight into the function of RONS regulatory systems in neuromuscular ageing. This review summarizes almost 30 years of research in the field of redox homeostasis and muscle ageing, providing a detailed discussion of the experimental approaches that have been undertaken in murine models to examine the role of redox regulation in age-related muscle atrophy and weakness.
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Affiliation(s)
| | - Adam P. Lightfoot
- School of Healthcare ScienceManchester Metropolitan UniversityManchesterM1 5GDUK
| | - Kate E. Earl
- MRC‐Arthritis Research UK Centre for Integrated Research into Musculoskeletal Ageing, Department of Musculoskeletal Biology, Institute of Ageing and Chronic DiseaseUniversity of LiverpoolLiverpoolL7 8TXUK
| | - Martin Stofanko
- Microvisk Technologies LtdThe Quorum7600 Oxford Business ParkOxfordOX4 2JZUK
| | - Brian McDonagh
- MRC‐Arthritis Research UK Centre for Integrated Research into Musculoskeletal Ageing, Department of Musculoskeletal Biology, Institute of Ageing and Chronic DiseaseUniversity of LiverpoolLiverpoolL7 8TXUK
- Department of Physiology, School of MedicineNational University of IrelandGalwayIreland
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27
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Lamboley CR, Xu H, Dutka TL, Hanson ED, Hayes A, Violet JA, Murphy RM, Lamb GD. Effect of androgen deprivation therapy on the contractile properties of type I and type II skeletal muscle fibres in men with non-metastatic prostate cancer. Clin Exp Pharmacol Physiol 2017; 45:146-154. [DOI: 10.1111/1440-1681.12873] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 08/30/2017] [Accepted: 09/28/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Cedric R Lamboley
- Institute of Sport, Exercise and Active Living (ISEAL); College of Sport and Exercise Science; Victoria University; Melbourne Vic. Australia
- School of Life Sciences; La Trobe University; Melbourne Vic. Australia
| | - Hongyang Xu
- Department of Biochemistry and Genetics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne Vic. Australia
| | - Travis L Dutka
- School of Life Sciences; La Trobe University; Melbourne Vic. Australia
| | - Erik D Hanson
- Institute of Sport, Exercise and Active Living (ISEAL); College of Sport and Exercise Science; Victoria University; Melbourne Vic. Australia
- Australian Institute for Musculoskeletal Science (AIMSS); Sunshine Hospital; Western Health; Melbourne Vic. Australia
- College of Health and Biomedicine; Victoria University; Melbourne Vic. Australia
| | - Alan Hayes
- Institute of Sport, Exercise and Active Living (ISEAL); College of Sport and Exercise Science; Victoria University; Melbourne Vic. Australia
- Australian Institute for Musculoskeletal Science (AIMSS); Sunshine Hospital; Western Health; Melbourne Vic. Australia
- College of Health and Biomedicine; Victoria University; Melbourne Vic. Australia
| | - John A Violet
- Division of Radiation Oncology and Cancer Imaging; Peter MacCallum Cancer Centre; East Melbourne Vic. Australia
| | - Robyn M Murphy
- Department of Biochemistry and Genetics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne Vic. Australia
| | - Graham D Lamb
- School of Life Sciences; La Trobe University; Melbourne Vic. Australia
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Yamada T, Steinz MM, Kenne E, Lanner JT. Muscle Weakness in Rheumatoid Arthritis: The Role of Ca 2+ and Free Radical Signaling. EBioMedicine 2017; 23:12-19. [PMID: 28781131 PMCID: PMC5605300 DOI: 10.1016/j.ebiom.2017.07.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/13/2017] [Accepted: 07/24/2017] [Indexed: 02/07/2023] Open
Abstract
In addition to the primary symptoms arising from inflammatory processes in the joints, muscle weakness is commonly reported by patients with rheumatoid arthritis (RA). Muscle weakness not only reduces the quality of life for the affected patients, but also dramatically increases the burden on society since patients' work ability decreases. A 25–70% reduction in muscular strength has been observed in pateints with RA when compared with age-matched healthy controls. The reduction in muscle strength is often larger than what could be explained by the reduction in muscle size in patients with RA, which indicates that intracellular (intrinsic) muscle dysfunction plays an important role in the underlying mechanism of muscle weakness associated with RA. In this review, we highlight the present understanding of RA-associated muscle weakness with special focus on how enhanced Ca2 + release from the ryanodine receptor and free radicals (reactive oxygen/nitrogen species) contributes to muscle weakness, and recent developments of novel therapeutic interventions. Muscle weakness is commonly reported by patients with rheumatoid arthritis (RA). Intrinsic muscle weakness is important in the underlying mechanisms of muscle weakness associated with rheumatoid arthritis. Enhanced Ca2 + release and peroxynitrite-induced stress contributes to RA-induced muscle weakness.
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Affiliation(s)
- Takashi Yamada
- Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan
| | - Maarten M Steinz
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Ellinor Kenne
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Johanna T Lanner
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
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de Winter JM, Ottenheijm CAC. A two-faced cysteine residue modulates skeletal muscle contraction. Focus on “S-nitrosylation and S-glutathionylation of Cys134 on troponin I have opposing competitive actions on Ca2+ sensitivity in rat fast-twitch muscle fibers. Am J Physiol Cell Physiol 2017; 312:C314-C315. [DOI: 10.1152/ajpcell.00009.2017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 01/20/2017] [Indexed: 11/22/2022]
Affiliation(s)
- Josine M. de Winter
- Department of Physiology, VU University Medical Center, Amsterdam, The Netherlands
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Dutka TL, Mollica JP, Lamboley CR, Weerakkody VC, Greening DW, Posterino GS, Murphy RM, Lamb GD. S-nitrosylation and S-glutathionylation of Cys134 on troponin I have opposing competitive actions on Ca2+ sensitivity in rat fast-twitch muscle fibers. Am J Physiol Cell Physiol 2017; 312:C316-C327. [DOI: 10.1152/ajpcell.00334.2016] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/05/2016] [Accepted: 12/12/2016] [Indexed: 11/22/2022]
Abstract
Nitric oxide is generated in skeletal muscle with activity and decreases Ca2+ sensitivity of the contractile apparatus, putatively by S-nitrosylation of an unidentified protein. We investigated the mechanistic basis of this effect and its relationship to the oxidation-induced increase in Ca2+ sensitivity in mammalian fast-twitch (FT) fibers mediated by S-glutathionylation of Cys134 on fast troponin I (TnIf). Force-[Ca2+] characteristics of the contractile apparatus in mechanically skinned fibers were assessed by direct activation with heavily Ca2+-buffered solutions. Treatment with S-nitrosylating agents, S-nitrosoglutathione (GSNO) or S-nitroso- N-acetyl-penicillamine (SNAP), decreased pCa50 ( = −log10 [Ca2+] at half-maximal activation) by ~−0.07 pCa units in rat and human FT fibers without affecting maximum force, but had no effect on rat and human slow-twitch fibers or toad or chicken FT fibers, which all lack Cys134. The Ca2+ sensitivity decrease was 1) fully reversed with dithiothreitol or reduced glutathione, 2) at least partially reversed with ascorbate, indicative of involvement of S-nitrosylation, and 3) irreversibly blocked by low concentration of the alkylating agent, N-ethylmaleimide (NEM). The biotin-switch assay showed that both GSNO and SNAP treatments caused S-nitrosylation of TnIf. S-glutathionylation pretreatment blocked the effects of S-nitrosylation on Ca2+ sensitivity, and vice-versa. S-nitrosylation pretreatment prevented NEM from irreversibly blocking S-glutathionylation of TnIf and its effects on Ca2+ sensitivity, and likewise S-glutathionylation pretreatment prevented NEM block of S-nitrosylation. Following substitution of TnIf into rat slow-twitch fibers, S-nitrosylation treatment caused decreased Ca2+ sensitivity. These findings demonstrate that S-nitrosylation and S-glutathionylation exert opposing effects on Ca2+ sensitivity in mammalian FT muscle fibers, mediated by competitive actions on Cys134 of TnIf.
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Affiliation(s)
- T. L. Dutka
- School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
| | - J. P. Mollica
- School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
| | - C. R. Lamboley
- School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
- Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Victoria, Australia; and
| | - V. C. Weerakkody
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - D. W. Greening
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - G. S. Posterino
- School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
| | - R. M. Murphy
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - G. D. Lamb
- School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
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31
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Mitrou GI, Poulianiti KP, Koutedakis Y, Jamurtas AZ, Maridaki MD, Stefanidis I, Sakkas GK, Karatzaferi C. Functional responses of uremic single skeletal muscle fibers to redox imbalances. Hippokratia 2017; 21:3. [PMID: 29904249 PMCID: PMC5997027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND The exact causes of skeletal muscle weakness in chronic kidney disease (CKD) remain unknown with uremic toxicity and redox imbalances being implicated. To understand whether uremic muscle has acquired any sensitivity to acute redox changes we examined the effects of redox disturbances on force generation capacity. METHODS Permeabilized single psoas fibers (N =37) from surgically induced CKD (UREM) and sham-operated (CON) rabbits were exposed to an oxidizing (10 mM Hydrogen Peroxide, H2O2) and/or a reducing [10 mM Dithiothreitol (DTT)] agent, in a blind design, in two sets of experiments examining: A) the acute effect of the addition of H2O2 on maximal (pCa 4.4) isometric force of actively contracting fibers and the effect of incubation in DTT on subsequent re-activation and force recovery (N =9 CON; N =9 UREM fibers); B) the effect of incubation in H2O2 on both submaximal (pCa 6.2) and maximal (pCa 4.4) calcium activated isometric force generation (N =9 CON; N =10 UREM fibers). RESULTS Based on cross-sectional area (CSA) calculations, a 14 % atrophy in UREM fibers was revealed; thus forces were evaluated in absolute values and corrected for CSA (specific force) values. A) Addition of H2O2 during activation did not significantly affect force generation in any group or the pool of fibers. Incubation in DTT did not affect the CON fibers but caused a 12 % maximal isometric force decrease in UREM fibers (both in absolute force p =0.024, and specific force, p =0.027). B) Incubation in H2O2 during relaxation lowered subsequent maximal (but not submaximal) isometric forces in the Pool of fibers by 3.5 % (for absolute force p =0.033, for specific force p =0.019) but not in the fiber groups separately. CONCLUSIONS Force generation capacity of CON and UREM fibers is affected by oxidation similarly. However, DTT significantly lowered force in UREM muscle fibers. This may indicate that at baseline UREM muscle could have already been at a more reduced redox state than physiological. This observation warrants further investigation as it could be linked to disease-induced effects. HIPPOKRATIA 2017, 21(1): 3-7.
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Affiliation(s)
- G I Mitrou
- School of Physical Education and Sport Science, University of Thessaly, Trikala, Greece
- Biomechanical Solutions, Karditsa, Greece
| | - K P Poulianiti
- School of Physical Education and Sport Science, University of Thessaly, Trikala, Greece
| | - Y Koutedakis
- School of Physical Education and Sport Science, University of Thessaly, Trikala, Greece
- Institute for Research and Technology of Thessaly, Trikala, Greece
- School of Sport, Performing Arts and Leisure, Wolverhampton University, Wolverhampton, United Kingdom
| | - A Z Jamurtas
- School of Physical Education and Sport Science, University of Thessaly, Trikala, Greece
- Institute for Research and Technology of Thessaly, Trikala, Greece
| | - M D Maridaki
- School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
| | - I Stefanidis
- Department of Nephrology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - G K Sakkas
- School of Physical Education and Sport Science, University of Thessaly, Trikala, Greece
- Institute for Research and Technology of Thessaly, Trikala, Greece
- Faculty of Sport and Health Sciences, University of St Mark and St John (Plymouth Marjon), Plymouth, United Kingdom
| | - C Karatzaferi
- School of Physical Education and Sport Science, University of Thessaly, Trikala, Greece
- Institute for Research and Technology of Thessaly, Trikala, Greece
- Faculty of Sport and Health Sciences, University of St Mark and St John (Plymouth Marjon), Plymouth, United Kingdom
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32
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Watanabe D, Wada M. Predominant cause of prolonged low-frequency force depression changes during recovery after in situ fatiguing stimulation of rat fast-twitch muscle. Am J Physiol Regul Integr Comp Physiol 2016; 311:R919-R929. [DOI: 10.1152/ajpregu.00046.2016] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 09/20/2016] [Indexed: 12/16/2022]
Abstract
To investigate time-dependent changes in sarcoplasmic reticulum (SR) Ca2+ release and myofibrillar (my-) Ca2+ sensitivity during recovery from prolonged low-frequency force depression (PLFFD), rat gastrocnemius muscles were electrically stimulated in situ. After 0 h (R0), 0.5 h (R0.5), 2 h (R2), 6 h (R6), or 12 h of recovery, the superficial gastrocnemius muscles were excised and used for biochemical and skinned fiber analyses. At R0, R0.5, R2, and R6, the ratio of force at 1 Hz to that at 50 Hz was decreased in the skinned fibers. The ratio of depolarization-induced force to the maximum Ca2+-activated force (depol/Ca2+ force ratio) was utilized as an indicator of SR Ca2+ release. At R0, both the depol/Ca2+ force ratio and my-Ca2+ sensitivity were decreased. At R0.5 and R2, my-Ca2+ sensitivity was recovered, while the depol/Ca2+ force ratio remained depressed. At R6, my-Ca2+ sensitivity was decreased again, whereas the depol/Ca2+ force ratio was nearly restored. Western blot analyses demonstrated that decreased my-Ca2+ sensitivity at R6 and reduced depol/Ca2+ force ratio at R0, R0.5, and R2 were accompanied by depressions in S-glutathionylated troponin I and increases in dephosphorylated ryanodine receptor 1, respectively. These results indicate that, in the early stage of recovery, reduced SR Ca2+ release plays a primary role in the etiology of PLFFD, whereas decreased my-Ca2+ sensitivity is involved in the late stage, and suggest that S-glutathionylation of troponin I and dephosphorylation of ryanodine receptor 1 contribute, at least partly, to fatiguing contraction-induced alterations in my-Ca2+ sensitivity and SR Ca2+ release, respectively.
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Affiliation(s)
- Daiki Watanabe
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan; and
- Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan
| | - Masanobu Wada
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima, Japan; and
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33
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Mason SA, Morrison D, McConell GK, Wadley GD. Muscle redox signalling pathways in exercise. Role of antioxidants. Free Radic Biol Med 2016; 98:29-45. [PMID: 26912034 DOI: 10.1016/j.freeradbiomed.2016.02.022] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Revised: 02/05/2016] [Accepted: 02/17/2016] [Indexed: 01/01/2023]
Abstract
Recent research highlights the importance of redox signalling pathway activation by contraction-induced reactive oxygen species (ROS) and nitric oxide (NO) in normal exercise-related cellular and molecular adaptations in skeletal muscle. In this review, we discuss some potentially important redox signalling pathways in skeletal muscle that are involved in acute and chronic responses to contraction and exercise. Specifically, we discuss redox signalling implicated in skeletal muscle contraction force, mitochondrial biogenesis and antioxidant enzyme induction, glucose uptake and muscle hypertrophy. Furthermore, we review evidence investigating the impact of major exogenous antioxidants on these acute and chronic responses to exercise. Redox signalling pathways involved in adaptive responses in skeletal muscle to exercise are not clearly elucidated at present, and further research is required to better define important signalling pathways involved. Evidence of beneficial or detrimental effects of specific antioxidant compounds on exercise adaptations in muscle is similarly limited, particularly in human subjects. Future research is required to not only investigate effects of specific antioxidant compounds on skeletal muscle exercise adaptations, but also to better establish mechanisms of action of specific antioxidants in vivo. Although we feel it remains somewhat premature to make clear recommendations in relation to application of specific antioxidant compounds in different exercise settings, a bulk of evidence suggests that N-acetylcysteine (NAC) is ergogenic through its effects on maintenance of muscle force production during sustained fatiguing events. Nevertheless, a current lack of evidence from studies using performance tests representative of athletic competition and a potential for adverse effects with high doses (>70mg/kg body mass) warrants caution in its use for performance enhancement. In addition, evidence implicates high dose vitamin C (1g/day) and E (≥260 IU/day) supplementation in impairments to some skeletal muscle cellular adaptations to chronic exercise training. Thus, determining the utility of antioxidant supplementation in athletes likely requires a consideration of training and competition periodization cycles of athletes in addition to type, dose and duration of antioxidant supplementation.
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Affiliation(s)
- Shaun A Mason
- Centre for Physical Activity and Nutrition (C-PAN) Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Dale Morrison
- Centre for Physical Activity and Nutrition (C-PAN) Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Glenn K McConell
- Clinical Exercise Science Research Program, Institute for Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Victoria, Australia
| | - Glenn D Wadley
- Centre for Physical Activity and Nutrition (C-PAN) Research, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia.
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34
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Cheng AJ, Yamada T, Rassier DE, Andersson DC, Westerblad H, Lanner JT. Reactive oxygen/nitrogen species and contractile function in skeletal muscle during fatigue and recovery. J Physiol 2016; 594:5149-60. [PMID: 26857536 DOI: 10.1113/jp270650] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 12/23/2015] [Indexed: 01/17/2023] Open
Abstract
The production of reactive oxygen/nitrogen species (ROS/RNS) is generally considered to increase during physical exercise. Nevertheless, direct measurements of ROS/RNS often show modest increases in ROS/RNS in muscle fibres even during intensive fatiguing stimulation, and the major source(s) of ROS/RNS during exercise is still being debated. In rested muscle fibres, mild and acute exposure to exogenous ROS/RNS generally increases myofibrillar submaximal force, whereas stronger or prolonged exposure has the opposite effect. Endogenous production of ROS/RNS seems to preferentially decrease submaximal force and positive effects of antioxidants are mainly observed during fatigue induced by submaximal contractions. Fatigued muscle fibres frequently enter a prolonged state of reduced submaximal force, which is caused by a ROS/RNS-dependent decrease in sarcoplasmic reticulum Ca(2+) release and/or myofibrillar Ca(2+) sensitivity. Increased ROS/RNS production during exercise can also be beneficial and recent human and animal studies show that antioxidant supplementation can hamper the beneficial effects of endurance training. In conclusion, increased ROS/RNS production have both beneficial and detrimental effects on skeletal muscle function and the outcome depends on a combination of factors: the type of ROS/RNS; the magnitude, duration and location of ROS/RNS production; and the defence systems, including both endogenous and exogenous antioxidants.
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Affiliation(s)
| | | | - Dilson E Rassier
- McGill University, 475 Pine Avenue West, Montreal, QC, Canada, H2W1S4
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35
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Sheng JJ, Jin JP. TNNI1, TNNI2 and TNNI3: Evolution, regulation, and protein structure-function relationships. Gene 2015; 576:385-94. [PMID: 26526134 DOI: 10.1016/j.gene.2015.10.052] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 09/21/2015] [Accepted: 10/20/2015] [Indexed: 12/11/2022]
Abstract
Troponin I (TnI) is the inhibitory subunit of the troponin complex in the sarcomeric thin filament of striated muscle and plays a central role in the calcium regulation of contraction and relaxation. Vertebrate TnI has evolved into three isoforms encoded by three homologous genes: TNNI1 for slow skeletal muscle TnI, TNNI2 for fast skeletal muscle TnI and TNNI3 for cardiac TnI, which are expressed under muscle type-specific and developmental regulations. To summarize the current knowledge on the TnI isoform genes and products, this review focuses on the evolution, gene regulation, posttranslational modifications, and structure-function relationship of TnI isoform proteins. Their physiological and medical significances are also discussed.
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Affiliation(s)
- Juan-Juan Sheng
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Jian-Ping Jin
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201, USA.
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36
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Breitkreuz M, Hamdani N. A change of heart: oxidative stress in governing muscle function? Biophys Rev 2015; 7:321-341. [PMID: 28510229 DOI: 10.1007/s12551-015-0175-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 06/08/2015] [Indexed: 02/07/2023] Open
Abstract
Redox/cysteine modification of proteins that regulate calcium cycling can affect contraction in striated muscles. Understanding the nature of these modifications would present the possibility of enhancing cardiac function through reversible cysteine modification of proteins, with potential therapeutic value in heart failure with diastolic dysfunction. Both heart failure and muscular dystrophy are characterized by abnormal redox balance and nitrosative stress. Recent evidence supports the synergistic role of oxidative stress and inflammation in the progression of heart failure with preserved ejection fraction, in concert with endothelial dysfunction and impaired nitric oxide-cyclic guanosine monophosphate-protein kinase G signalling via modification of the giant protein titin. Although antioxidant therapeutics in heart failure with diastolic dysfunction have no marked beneficial effects on the outcome of patients, it, however, remains critical to the understanding of the complex interactions of oxidative/nitrosative stress with pro-inflammatory mechanisms, metabolic dysfunction, and the redox modification of proteins characteristic of heart failure. These may highlight novel approaches to therapeutic strategies for heart failure with diastolic dysfunction. In this review, we provide an overview of oxidative stress and its effects on pathophysiological pathways. We describe the molecular mechanisms driving oxidative modification of proteins and subsequent effects on contractile function, and, finally, we discuss potential therapeutic opportunities for heart failure with diastolic dysfunction.
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Affiliation(s)
- Martin Breitkreuz
- Department of Cardiovascular Physiology, Ruhr University Bochum, MA 3/56, 44780, Bochum, Germany
| | - Nazha Hamdani
- Department of Cardiovascular Physiology, Ruhr University Bochum, MA 3/56, 44780, Bochum, Germany.
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37
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Givertz MM, Anstrom KJ, Redfield MM, Deswal A, Haddad H, Butler J, Tang WHW, Dunlap ME, LeWinter MM, Mann DL, Felker GM, O'Connor CM, Goldsmith SR, Ofili EO, Saltzberg MT, Margulies KB, Cappola TP, Konstam MA, Semigran MJ, McNulty SE, Lee KL, Shah MR, Hernandez AF. Effects of Xanthine Oxidase Inhibition in Hyperuricemic Heart Failure Patients: The Xanthine Oxidase Inhibition for Hyperuricemic Heart Failure Patients (EXACT-HF) Study. Circulation 2015; 131:1763-71. [PMID: 25986447 PMCID: PMC4438785 DOI: 10.1161/circulationaha.114.014536] [Citation(s) in RCA: 218] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 03/05/2015] [Indexed: 01/06/2023]
Abstract
BACKGROUND Oxidative stress may contribute to heart failure (HF) progression. Inhibiting xanthine oxidase in hyperuricemic HF patients may improve outcomes. METHODS AND RESULTS We randomly assigned 253 patients with symptomatic HF, left ventricular ejection fraction ≤40%, and serum uric acid levels ≥9.5 mg/dL to receive allopurinol (target dose, 600 mg daily) or placebo in a double-blind, multicenter trial. The primary composite end point at 24 weeks was based on survival, worsening HF, and patient global assessment. Secondary end points included change in quality of life, submaximal exercise capacity, and left ventricular ejection fraction. Uric acid levels were significantly reduced with allopurinol in comparison with placebo (treatment difference, -4.2 [-4.9, -3.5] mg/dL and -3.5 [-4.2, -2.7] mg/dL at 12 and 24 weeks, respectively, both P<0.0001). At 24 weeks, there was no significant difference in clinical status between the allopurinol- and placebo-treated patients (worsened 45% versus 46%, unchanged 42% versus 34%, improved 13% versus 19%, respectively; P=0.68). At 12 and 24 weeks, there was no significant difference in change in Kansas City Cardiomyopathy Questionnaire scores or 6-minute walk distances between the 2 groups. At 24 weeks, left ventricular ejection fraction did not change in either group or between groups. Rash occurred more frequently with allopurinol (10% versus 2%, P=0.01), but there was no difference in serious adverse event rates between the groups (20% versus 15%, P=0.36). CONCLUSIONS In high-risk HF patients with reduced ejection fraction and elevated uric acid levels, xanthine oxidase inhibition with allopurinol failed to improve clinical status, exercise capacity, quality of life, or left ventricular ejection fraction at 24 weeks. CLINICAL TRIAL REGISTRATION URL: http://www.clinicaltrials.gov. Unique identifier: NCT00987415.
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Affiliation(s)
- Michael M Givertz
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.).
| | - Kevin J Anstrom
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Margaret M Redfield
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Anita Deswal
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Haissam Haddad
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Javed Butler
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - W H Wilson Tang
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Mark E Dunlap
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Martin M LeWinter
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Douglas L Mann
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - G Michael Felker
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Christopher M O'Connor
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Steven R Goldsmith
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Elizabeth O Ofili
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Mitchell T Saltzberg
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Kenneth B Margulies
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Thomas P Cappola
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Marvin A Konstam
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Marc J Semigran
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Steven E McNulty
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Kerry L Lee
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Monica R Shah
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
| | - Adrian F Hernandez
- From Brigham and Women's Hospital, Harvard Medical School, Boston, MA (M.M.G.); Duke University Medical Center, Durham, NC (K.J.A., G.M.F., C.M.O., S.E.M., K.L.L., A.F.H.); Mayo Clinic, Rochester, MN (M.M.R.); Michael E. DeBakey VA Medical Center, Baylor College of Medicine, Houston, TX (A.D.); Ottawa Heart Institute, Ontario, Canada (H.H.); Emory University, Atlanta, GA (J.B.); Cleveland Clinic, OH (W.H.W.T.); MetroHealth Campus of Case Western Reserve University, Cleveland, OH (M.E.D.); University of Vermont, Burlington (M.M.L.); Washington University, St. Louis, MO (D.L.M.); Hennepin County Medical Center, Minneapolis, MN (S.R.G.); Morehouse School of Medicine, Atlanta, GA (E.O.O.); Christiana Care Health System, Newark, DE (M.T.S.); University of Pennsylvania, Philadelphia (K.B.M., T.P.C.); Tufts Medical Center, Boston, MA (M.A.K.); Massachusetts General Hospital, Boston (M.J.S.); and National Heart, Lung, and Blood Institute, Bethesda, MD (M.R.S.)
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Gejl KD, Hvid LG, Willis SJ, Andersson E, Holmberg HC, Jensen R, Frandsen U, Hansen J, Plomgaard P, Ørtenblad N. Repeated high-intensity exercise modulates Ca2+sensitivity of human skeletal muscle fibers. Scand J Med Sci Sports 2015; 26:488-97. [DOI: 10.1111/sms.12483] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2015] [Indexed: 12/17/2022]
Affiliation(s)
- K. D. Gejl
- Department of Sports Science and Clinical Biomechanics; SDU Muscle Research Cluster; University of Southern Denmark; Odense Denmark
| | - L. G. Hvid
- Department of Sports Science and Clinical Biomechanics; SDU Muscle Research Cluster; University of Southern Denmark; Odense Denmark
| | - S. J. Willis
- Department of Health Sciences; Swedish Winter Sports Research Centre; Mid Sweden University; Östersund Sweden
| | - E. Andersson
- Department of Health Sciences; Swedish Winter Sports Research Centre; Mid Sweden University; Östersund Sweden
| | - H.-C. Holmberg
- Department of Health Sciences; Swedish Winter Sports Research Centre; Mid Sweden University; Östersund Sweden
- Swedish Olympic Committee; Stockholm Sweden
| | - R. Jensen
- Department of Sports Science and Clinical Biomechanics; SDU Muscle Research Cluster; University of Southern Denmark; Odense Denmark
| | - U. Frandsen
- Department of Sports Science and Clinical Biomechanics; SDU Muscle Research Cluster; University of Southern Denmark; Odense Denmark
| | - J. Hansen
- Department of Infectious Diseases and CMRC; The Centre of Inflammation and Metabolism; Rigshospitalet; Copenhagen Denmark
- Department of Clinical Biochemistry; Rigshospitalet; Copenhagen Denmark
| | - P. Plomgaard
- Department of Infectious Diseases and CMRC; The Centre of Inflammation and Metabolism; Rigshospitalet; Copenhagen Denmark
- Department of Clinical Biochemistry; Rigshospitalet; Copenhagen Denmark
| | - N. Ørtenblad
- Department of Sports Science and Clinical Biomechanics; SDU Muscle Research Cluster; University of Southern Denmark; Odense Denmark
- Department of Health Sciences; Swedish Winter Sports Research Centre; Mid Sweden University; Östersund Sweden
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Lamboley CR, Wyckelsma VL, Dutka TL, McKenna MJ, Murphy RM, Lamb GD. Contractile properties and sarcoplasmic reticulum calcium content in type I and type II skeletal muscle fibres in active aged humans. J Physiol 2015; 593:2499-514. [PMID: 25809942 DOI: 10.1113/jp270179] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 03/23/2015] [Indexed: 01/25/2023] Open
Abstract
KEY POINTS Muscle weakness in old age is due in large part to an overall loss of skeletal muscle tissue, but it remains uncertain how much also stems from alterations in the properties of the individual muscle fibres. This study examined the contractile properties and amount of stored intracellular calcium in single muscle fibres of Old (70 ± 4 years) and Young (22 ± 3 years) adults. The maximum level of force production (per unit cross-sectional area) in fast twitch fibres in Old subjects was lower than in Young subjects, and the fibres were also less sensitive to activation by calcium. The amount of calcium stored inside muscle fibres and available to trigger contraction was also lower in both fast- and slow-twitch muscle fibres in the Old subjects. These findings indicate that muscle weakness in old age stems in part from an impaired capacity for force production in the individual muscle fibres. ABSTRACT This study examined the contractile properties and sarcoplasmic reticulum (SR) Ca(2+) content in mechanically skinned vastus lateralis muscle fibres of Old (70 ± 4 years) and Young (22 ± 3 years) humans to investigate whether changes in muscle fibre properties contribute to muscle weakness in old age. In type II fibres of Old subjects, specific force was reduced by ∼17% and Ca(2+) sensitivity was also reduced (pCa50 decreased ∼0.05 pCa units) relative to that in Young. S-Glutathionylation of fast troponin I (TnIf ) markedly increased Ca(2+) sensitivity in type II fibres, but the increase was significantly smaller in Old versus Young (+0.136 and +0.164 pCa unit increases, respectively). Endogenous and maximal SR Ca(2+) content were significantly smaller in both type I and type II fibres in Old subjects. In fibres of Young, the SR could be nearly fully depleted of Ca(2+) by a combined caffeine and low Mg(2+) stimulus, whereas in fibres of Old the amount of non-releasable Ca(2+) was significantly increased (by > 12% of endogenous Ca(2+) content). Western blotting showed an increased proportion of type I fibres in Old subjects, and increased amounts of calsequestrin-2 and calsequestrin-like protein. The findings suggest that muscle weakness in old age is probably attributable in part to (i) an increased proportion of type I fibres, (ii) a reduction in both maximum specific force and Ca(2+) sensitivity in type II fibres, and also a decreased ability of S-glutathionylation of TnIf to counter the fatiguing effects of metabolites on Ca(2+) sensitivity, and (iii) a reduction in the amount of releasable SR Ca(2+) in both fibre types.
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Affiliation(s)
- C R Lamboley
- Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, PO Box 14428, Melbourne, Victoria, 8001, Australia
| | - V L Wyckelsma
- Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, PO Box 14428, Melbourne, Victoria, 8001, Australia.,La Trobe Rural Health School, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - T L Dutka
- School of Life Sciences, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - M J McKenna
- Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, PO Box 14428, Melbourne, Victoria, 8001, Australia
| | - R M Murphy
- School of Molecular Sciences, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - G D Lamb
- School of Life Sciences, La Trobe University, Melbourne, Victoria, 3086, Australia
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Watanabe D, Kanzaki K, Kuratani M, Matsunaga S, Yanaka N, Wada M. Contribution of impaired myofibril and ryanodine receptor function to prolonged low-frequency force depression after in situ stimulation in rat skeletal muscle. J Muscle Res Cell Motil 2015; 36:275-86. [DOI: 10.1007/s10974-015-9409-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 02/12/2015] [Indexed: 01/21/2023]
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Williams R, Lemaire P, Lewis P, McDonald FB, Lucking E, Hogan S, Sheehan D, Healy V, O'Halloran KD. Chronic intermittent hypoxia increases rat sternohyoid muscle NADPH oxidase expression with attendant modest oxidative stress. Front Physiol 2015; 6:15. [PMID: 25688214 PMCID: PMC4311627 DOI: 10.3389/fphys.2015.00015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 01/10/2015] [Indexed: 12/29/2022] Open
Abstract
Chronic intermittent hypoxia (CIH) causes upper airway muscle dysfunction. We hypothesized that the superoxide generating NADPH oxidase (NOX) is upregulated in CIH-exposed muscle causing oxidative stress. Adult male Wistar rats were exposed to intermittent hypoxia (5% O2 at the nadir for 90 s followed by 210 s of normoxia), for 8 h per day for 14 days. The effect of CIH exposure on the expression of NOX subunits, total myosin and 4-hydroxynonenal (4-HNE) protein adducts in sternohyoid muscle was determined by western blotting and densitometry. Sternohyoid protein free thiol and carbonyl group contents were determined by 1D electrophoresis using specific fluorophore probes. Aconitase and glutathione reductase activities were measured as indices of oxidative stress. HIF-1α content and key oxidative and glycolytic enzyme activities were determined. Contractile properties of sternohyoid muscle were determined ex vivo in the absence and presence of apocynin (putative NOX inhibitor). We observed an increase in NOX 2 and p47 phox expression in CIH-exposed sternohyoid muscle with decreased aconitase and glutathione reductase activities. There was no evidence, however, of increased lipid peroxidation or protein oxidation in CIH-exposed muscle. CIH exposure did not affect sternohyoid HIF-1α content or aldolase, lactate dehydrogenase, or glyceraldehyde-3-phosphate dehydrogenase activities. Citrate synthase activity was also unaffected by CIH exposure. Apocynin significantly increased sternohyoid force and power. We conclude that CIH exposure upregulates NOX expression in rat sternohyoid muscle with concomitant modest oxidative stress but it does not result in a HIF-1α-dependent increase in glycolytic enzyme activity. Constitutive NOX activity decreases sternohyoid force and power. Our results implicate NOX-dependent reactive oxygen species in CIH-induced upper airway muscle dysfunction which likely relates to redox modulation of key regulatory proteins in excitation-contraction coupling.
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Affiliation(s)
- Robert Williams
- Department of Physiology, School of Medicine, University College Cork Cork, Ireland
| | - Paul Lemaire
- Department of Physiology, School of Medicine, University College Cork Cork, Ireland
| | - Philip Lewis
- Department of Physiology, School of Medicine, University College Cork Cork, Ireland
| | - Fiona B McDonald
- School of Medicine and Medical Science, University College Dublin Dublin, Ireland
| | - Eric Lucking
- School of Medicine and Medical Science, University College Dublin Dublin, Ireland
| | - Sean Hogan
- Department of Physiology, School of Medicine, University College Cork Cork, Ireland
| | - David Sheehan
- School of Biochemistry and Cell Biology, University College Cork Cork, Ireland
| | - Vincent Healy
- Department of Physiology, School of Medicine, University College Cork Cork, Ireland
| | - Ken D O'Halloran
- Department of Physiology, School of Medicine, University College Cork Cork, Ireland
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Pereyra-Venegas J, Segura-Alegría B, Guadarrama-Olmos JC, Mariscal-Tovar S, Quiróz-González S, Jiménez-Estrada I. Effects provoked by chronic undernourishment on the fibre type composition and contractility of fast muscles in male and female developing rats. J Anim Physiol Anim Nutr (Berl) 2014; 99:974-86. [DOI: 10.1111/jpn.12274] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 10/27/2014] [Indexed: 11/26/2022]
Affiliation(s)
- J. Pereyra-Venegas
- Departamento de Biología; Facultad de Estudios Superiores Iztacala; Universidad Nacional Autónoma de México; Tlalnepantla de Baz Estado de México México
- Instituto de Fisiología Celular; Universidad Nacional Autónoma de México; México City México
| | - B. Segura-Alegría
- Departamento de Biología; Facultad de Estudios Superiores Iztacala; Universidad Nacional Autónoma de México; Tlalnepantla de Baz Estado de México México
| | - J. C. Guadarrama-Olmos
- Departamento de Fisiología, Biofísica y Neurociencias; Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional; San Pedro Zacatenco; Del. Gustavo A. Madero. México City México
| | - S. Mariscal-Tovar
- Departamento de Fisiología, Biofísica y Neurociencias; Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional; San Pedro Zacatenco; Del. Gustavo A. Madero. México City México
| | - S. Quiróz-González
- Departamento de Acupuntura y Rehabilitación; Universidad Estatal del Valle de Ecatepec; Valle de Anáhuac Ecatepec Estado de México México
| | - I. Jiménez-Estrada
- Departamento de Fisiología, Biofísica y Neurociencias; Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional; San Pedro Zacatenco; Del. Gustavo A. Madero. México City México
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43
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Cheng AJ, Bruton JD, Lanner JT, Westerblad H. Antioxidant treatments do not improve force recovery after fatiguing stimulation of mouse skeletal muscle fibres. J Physiol 2014; 593:457-72. [PMID: 25630265 DOI: 10.1113/jphysiol.2014.279398] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 10/30/2014] [Indexed: 12/20/2022] Open
Abstract
The contractile performance of skeletal muscle declines during intense activities, i.e. fatigue develops. Fatigued muscle can enter a state of prolonged low-frequency force depression (PLFFD). PLFFD can be due to decreased tetanic free cytosolic [Ca(2+) ] ([Ca(2+) ]i ) and/or decreased myofibrillar Ca(2+) sensitivity. Increases in reactive oxygen and nitrogen species (ROS/RNS) may contribute to fatigue-induced force reductions. We studied whether pharmacological ROS/RNS inhibition delays fatigue and/or counteracts the development of PLFFD. Mechanically isolated mouse fast-twitch fibres were fatigued by sixty 150 ms, 70 Hz tetani given every 1 s. Experiments were performed in standard Tyrode solution (control) or in the presence of: NADPH oxidase (NOX) 2 inhibitor (gp91ds-tat); NOX4 inhibitor (GKT137831); mitochondria-targeted antioxidant (SS-31); nitric oxide synthase (NOS) inhibitor (l-NAME); the general antioxidant N-acetylcysteine (NAC); a cocktail of SS-31, l-NAME and NAC. Spatially and temporally averaged [Ca(2+) ]i and peak force were reduced by ∼20% and ∼70% at the end of fatiguing stimulation, respectively, with no marked differences between groups. PLFFD was similar in all groups, with 30 Hz force being decreased by ∼60% at 30 min of recovery. PLFFD was mostly due to decreased tetanic [Ca(2+) ]i in control fibres and in the presence of NOX2 or NOX4 inhibitors. Conversely, in fibres exposed to SS-31 or the anti ROS/RNS cocktail, tetanic [Ca(2+) ]i was not decreased during recovery so PLFFD was only caused by decreased myofibrillar Ca(2+) sensitivity. The cocktail also increased resting [Ca(2+) ]i and ultimately caused cell death. In conclusion, ROS/RNS-neutralizing compounds did not counteract the force decline during or after induction of fatigue.
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Affiliation(s)
- Arthur J Cheng
- Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Stockholm, Sweden
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44
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Givertz MM, Mann DL, Lee KL, Ibarra JC, Velazquez EJ, Hernandez AF, Mascette AM, Braunwald E. Xanthine oxidase inhibition for hyperuricemic heart failure patients: design and rationale of the EXACT-HF study. Circ Heart Fail 2013; 6:862-8. [PMID: 23861505 DOI: 10.1161/circheartfailure.113.000394] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Michael M Givertz
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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Gross SM, Lehman SL. Accessibility of myofilament cysteines and effects on ATPase depend on the activation state during exposure to oxidants. PLoS One 2013; 8:e69110. [PMID: 23894416 PMCID: PMC3716824 DOI: 10.1371/journal.pone.0069110] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 06/05/2013] [Indexed: 11/28/2022] Open
Abstract
Signaling by reactive oxygen species has emerged as a major physiological process. Due to its high metabolic rate, striated muscle is especially subject to oxidative stress, and there are multiple examples in cardiac and skeletal muscle where oxidative stress modulates contractile function. Here we assessed the potential of cysteine oxidation as a mechanism for modulating contractile function in skeletal and cardiac muscle. Analyzing the cysteine content of the myofilament proteins in striated muscle, we found that cysteine residues are relatively rare, but are very similar between different muscle types and different vertebrate species. To refine this list of cysteines to those that may modulate function, we estimated the accessibility of oxidants to cysteine residues using protein crystal structures, and then sharpened these estimates using fluorescent labeling of cysteines in cardiac and skeletal myofibrils. We demonstrate that cysteine accessibility to oxidants and ATPase rates depend on the contractile state in which preparations are exposed. Oxidant exposure of skeletal and cardiac myofibrils in relaxing solution exposes myosin cysteines not accessible in rigor solution, and these modifications correspond to a decrease in maximum ATPase. Oxidant exposure under rigor conditions produces modifications that increase basal ATPase and calcium sensitivity in ventricular myofibrils, but these effects were muted in fast twitch muscle. These experiments reveal how structural and sequence variations can lead to divergent effects from oxidants in different muscle types.
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Affiliation(s)
- Sean M. Gross
- Department of Integrative Biology, University of California, Berkeley, California, United States of America
| | - Steven L. Lehman
- Department of Integrative Biology, University of California, Berkeley, California, United States of America
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Hvid LG, Gejl K, Bech RD, Nygaard T, Jensen K, Frandsen U, Ørtenblad N. Transient impairments in single muscle fibre contractile function after prolonged cycling in elite endurance athletes. Acta Physiol (Oxf) 2013; 208:265-73. [PMID: 23480612 DOI: 10.1111/apha.12095] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 02/28/2013] [Accepted: 03/05/2013] [Indexed: 11/27/2022]
Abstract
AIM Prolonged muscle activity impairs whole-muscle performance and function. However, little is known about the effects of prolonged muscle activity on the contractile function of human single muscle fibres. The purpose of this study was to investigate the effects of prolonged exercise and subsequent recovery on the contractile function of single muscle fibres obtained from elite athletes. METHODS Nine male triathletes (26 ± 1 years, 68 ± 1 mL O2 min(-1) kg(-1) , training volume 16 ± 1 h week(-1) ) performed 4 h of cycling exercise (at 73% of HRmax ) followed by 24 h of recovery. Biopsies from vastus lateralis were obtained before and following 4 h exercise and following 24 h recovery. Measurements comprised maximal Ca(2+) -activated specific force and Ca(2+) sensitivity of slow type I and fast type II single muscle fibres, as well as cycling peak power output. RESULTS Following cycling exercise, specific force was reduced to a similar extent in slow and fast fibres (-15 and -18%, respectively), while Ca(2+) sensitivity decreased in fast fibres only. Single fibre-specific force was fully restored in both fibre types after 24 h recovery. Cycling peak power output was reduced by 4-9% following cycling exercise and fully restored following recovery. CONCLUSION This is the first study to demonstrate that prolonged cycling exercise transiently impairs specific force in type I and II fibres and decreases Ca(2+) sensitivity in type II fibres only, specifically in elite endurance athletes. Further, the changes in single fibre-specific force induced by exercise and recovery coincided temporally with changes in cycling peak power output.
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Affiliation(s)
- L. G. Hvid
- Institute of Sports Science and Clinical Biomechanics, SDU Muscle Research Cluster (SMRC); Institute of Sports Science and Clinical Biomechanics; University of Southern Denmark; Odense; Denmark
| | - K. Gejl
- Institute of Sports Science and Clinical Biomechanics, SDU Muscle Research Cluster (SMRC); Institute of Sports Science and Clinical Biomechanics; University of Southern Denmark; Odense; Denmark
| | - R. D. Bech
- Department of Orthopaedic Surgery; Odense University Hospital; Odense; Denmark
| | - T. Nygaard
- Department of Orthopaedic Surgery; Rigshospitalet; University of Copenhagen; Copenhagen; Denmark
| | - K. Jensen
- Institute of Sports Science and Clinical Biomechanics, SDU Muscle Research Cluster (SMRC); Institute of Sports Science and Clinical Biomechanics; University of Southern Denmark; Odense; Denmark
| | - U. Frandsen
- Institute of Sports Science and Clinical Biomechanics, SDU Muscle Research Cluster (SMRC); Institute of Sports Science and Clinical Biomechanics; University of Southern Denmark; Odense; Denmark
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Zuo L, Shiah A, Roberts WJ, Chien MT, Wagner PD, Hogan MC. Low Po₂ conditions induce reactive oxygen species formation during contractions in single skeletal muscle fibers. Am J Physiol Regul Integr Comp Physiol 2013; 304:R1009-16. [PMID: 23576612 DOI: 10.1152/ajpregu.00563.2012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Contractions in whole skeletal muscle during hypoxia are known to generate reactive oxygen species (ROS); however, identification of real-time ROS formation within isolated single skeletal muscle fibers has been challenging. Consequently, there is no convincing evidence showing increased ROS production in intact contracting fibers under low Po₂ conditions. Therefore, we hypothesized that intracellular ROS generation in single contracting skeletal myofibers increases during low Po₂ compared with a value approximating normal resting Po₂. Dihydrofluorescein was loaded into single frog (Xenopus) fibers, and fluorescence was used to monitor ROS using confocal microscopy. Myofibers were exposed to two maximal tetanic contractile periods (1 contraction/3 s for 2 min, separated by a 60-min rest period), each consisting of one of the following treatments: high Po₂ (30 Torr), low Po₂ (3-5 Torr), high Po₂ with ebselen (antioxidant), or low Po₂ with ebselen. Ebselen (10 μM) was administered before the designated contractile period. ROS formation during low Po₂ treatment was greater than during high Po₂ treatment, and ebselen decreased ROS generation in both low- and high-Po₂ conditions (P < 0.05). ROS accumulated at a faster rate in low vs. high Po₂. Force was reduced >30% for each condition except low Po₂ with ebselen, which only decreased ~15%. We concluded that single myofibers under low Po₂ conditions develop accelerated and more oxidative stress than at Po₂ = 30 Torr (normal human resting Po₂). Ebselen decreases ROS formation in both low and high Po₂, but only mitigates skeletal muscle fatigue during reduced Po₂ conditions.
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Affiliation(s)
- Li Zuo
- Department of Medicine, University of California, San Diego, La Jolla, CA, USA.
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48
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Shortt CM, O'Halloran KD. Hydrogen peroxide alters sternohyoid muscle function. Oral Dis 2013; 20:162-70. [PMID: 23445083 DOI: 10.1111/odi.12084] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 02/07/2013] [Accepted: 02/07/2013] [Indexed: 11/30/2022]
Abstract
Upper airway (UA) dilator muscles are critical for the maintenance of airway patency. Injury or fatigue to this group of muscles, as observed in patients with obstructive sleep apnoea (OSA) and animal models of OSA, may leave the UA susceptible to collapse. Although the mechanisms underlying respiratory muscle dysfunction are not completely understood, there is strong evidence suggesting a link between increased production of reactive oxygen species and altered muscle function. The aim of this study was to examine the effects of H2O2 on rat sternohyoid muscle function in vitro. Sternohyoid contractile and endurance properties were examined at 35 °C under control or hypoxic conditions. Studies were conducted in the presence of varying concentrations of H2O2 (0, 0.01, 0.1 and 1 mM). Muscle function was also examined in the presence of antioxidants [desferoxamine (DFX), catalase] and the reducing agent dithiothreitol (DTT). H2O2 decreased muscle endurance in a concentration-dependent manner. This was partially reversed by catalase, DFX and DTT. Our results suggest that oxidants may contribute to UA respiratory muscle dysfunction with implications for the control of UA patency in vivo.
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Affiliation(s)
- C M Shortt
- UCD School of Medicine and Medical Science, Health Sciences, University College Dublin, Dublin, Ireland
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49
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Dutka TL, Mollica JP, Posterino GS, Lamb GD. Reply from T. L. Dutka, J. P. Mollica, G. S. Posterino and G. D. Lamb. J Physiol 2012. [DOI: 10.1113/jphysiol.2012.243964] [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
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50
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Dutka TL, Verburg E, Larkins N, Hortemo KH, Lunde PK, Sejersted OM, Lamb GD. ROS-mediated decline in maximum Ca2+-activated force in rat skeletal muscle fibers following in vitro and in vivo stimulation. PLoS One 2012; 7:e35226. [PMID: 22629297 PMCID: PMC3358267 DOI: 10.1371/journal.pone.0035226] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 03/13/2012] [Indexed: 11/22/2022] Open
Abstract
We hypothesised that normal skeletal muscle stimulated intensely either in vitro or in situ would exhibit reactive oxygen species (ROS)-mediated contractile apparatus changes common to many pathophysiological conditions. Isolated soleus (SOL) and extensor digitorum longus (EDL) muscles of the rat were bubbled with 95% O2 and stimulated in vitro at 31°C to give isometric tetani (50 Hz for 0.5 s every 2 s) until maximum force declined to ≤30%. Skinned superficial slow-twitch fibers from the SOL muscles displayed a large reduction (∼41%) in maximum Ca2+-activated specific force (Fmax), with Ca2+-sensitivity unchanged. Fibers from EDL muscles were less affected. The decrease in Fmax in SOL fibers was evidently due to oxidation effects on cysteine residues because it was reversed if the reducing agent DTT was applied prior to activating the fiber. The GSH∶GSSG ratio was ∼3-fold lower in the cytoplasm of superficial fibers from stimulated muscle compared to control, confirming increased oxidant levels. The presence of Tempol and L-NAME during in vitro stimulation prevented reduction in Fmax. Skinned fibers from SOL muscles stimulated in vivo at 37°C with intact blood supply also displayed reduction in Fmax, though to a much smaller extent (∼12%). Thus, fibers from muscles stimulated even with putatively adequate O2 supply display a reversible oxidation-induced decrease in Fmax without change in Ca2+-sensitivity, consistent with action of peroxynitrite (or possibly superoxide) on cysteine residues of the contractile apparatus. Significantly, the changes closely resemble the contractile deficits observed in a range of pathophysiological conditions. These findings highlight how readily muscle experiences ROS-related deficits, and also point to potential difficulties when defining muscle performance and fatigue.
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Affiliation(s)
- Travis L Dutka
- Department of Zoology, La Trobe University, Melbourne, Australia.
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