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Lin H, Xing J, Pan H, Hirabayashi T, Maeshige N, Nakanishi R, Kondo H, Fujino H. Niacin supplementation attenuates the regression of three-dimensional capillary architecture in unloaded female rat skeletal muscle. Physiol Rep 2024; 12:e16019. [PMID: 38627220 PMCID: PMC11021194 DOI: 10.14814/phy2.16019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 04/05/2024] [Accepted: 04/05/2024] [Indexed: 04/19/2024] Open
Abstract
Inactivity can lead to muscle atrophy and capillary regression in skeletal muscle. Niacin (NA), known for inducing hypermetabolism, may help prevent this capillary regression. In this study involving adult female Sprague-Dawley rats, the animals were randomly assigned to one of four groups: control (CON), hindlimb unloading (HU), NA, and HU with NA supplementation (HU + NA). For a period of 2 weeks, the rats in the HU and HU + NA groups underwent HU, while those in the NA and HU + NA groups received NA (750 mg/kg) twice daily through oral administration. The results demonstrated that HU lowered capillary number, luminal diameter, and capillary volume, as well as decreased succinate dehydrogenase activity, slow fiber composition, and PGC-1α expression within the soleus muscle. However, NA supplementation prevented these alterations in capillary structure due to unloading by stimulating PGC-1α factors and inhibiting mitochondrial dysfunction. Therefore, NA supplementation could serve as a potential therapeutic approach for preserving the capillary network and mitochondrial metabolism of muscle fibers during periods of inactivity.
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Affiliation(s)
- Hao Lin
- Department of Rehabilitation ScienceKobe University Graduate School of Health SciencesKobeJapan
| | - Jihao Xing
- Department of Rehabilitation ScienceKobe University Graduate School of Health SciencesKobeJapan
| | - Han Pan
- Department of Rehabilitation ScienceKobe University Graduate School of Health SciencesKobeJapan
| | - Takumi Hirabayashi
- Department of Rehabilitation ScienceKobe University Graduate School of Health SciencesKobeJapan
| | - Noriaki Maeshige
- Department of Rehabilitation ScienceKobe University Graduate School of Health SciencesKobeJapan
| | - Ryosuke Nakanishi
- Department of Rehabilitation ScienceKobe University Graduate School of Health SciencesKobeJapan
| | - Hiroyo Kondo
- Department of Rehabilitation ScienceKobe University Graduate School of Health SciencesKobeJapan
| | - Hidemi Fujino
- Department of Rehabilitation ScienceKobe University Graduate School of Health SciencesKobeJapan
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Kitakaze T, Sugihira T, Kameyama H, Maruchi A, Kobayashi Y, Harada N, Yamaji R. Carotenoid transporter CD36 expression depends on hypoxia-inducible factor-1α in mouse soleus muscles. J Clin Biochem Nutr 2022; 71:112-121. [PMID: 36213788 PMCID: PMC9519423 DOI: 10.3164/jcbn.21-163] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/22/2022] [Indexed: 11/22/2022] Open
Abstract
Dietary β-carotene induces muscle hypertrophy and prevents muscle atrophy in red slow-twitch soleus muscles, but not in white fast-twitch extensor digitorum longus (EDL) muscles and gastrocnemius muscles. However, it remains unclear why these beneficial effects of β-carotene are elicited in soleus muscles. To address this issue, we focused on carotenoid transporters in skeletal muscles. In mice, Cd36 mRNA levels were higher in red muscle than in white muscle. The siRNA-mediated knockdown of CD36 decreased β-carotene uptake in C2C12 myotubes. In soleus muscles, CD36 knockdown inhibited β-carotene-induced increase in muscle mass. Intravenous injection of the hypoxia marker pimonidazole produced more pimonidazole-bound proteins in soleus muscles than in EDL muscles, and the hypoxia-inducible factor-1 (HIF-1) α protein level was higher in soleus muscles than in EDL muscles. In C2C12 myotubes, hypoxia increased the expression of CD36 and HIF-1α at the protein and mRNA levels, and HIF-1α knockdown reduced hypoxia-induced increase in Cd36 mRNA level. In soleus muscles, HIF-1α knockdown reduced Cd36 mRNA level. These results indicate that CD36 is predominantly involved in β-carotene-induced increase in soleus muscle mass of mice. Furthermore, we demonstrate that CD36 expression depends on HIF-1α in the soleus muscles of mice, even under normal physiological conditions.
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Affiliation(s)
- Tomoya Kitakaze
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
| | - Takashi Sugihira
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
| | - Hiromichi Kameyama
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
| | - Asami Maruchi
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
| | - Yasuyuki Kobayashi
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
| | - Naoki Harada
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
| | - Ryoichi Yamaji
- Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
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Abstract
The design of the energy metabolism system in striated muscle remains a major area of investigation. Here, we review our current understanding and emerging hypotheses regarding the metabolic support of muscle contraction. Maintenance of ATP free energy, so called energy homeostasis, via mitochondrial oxidative phosphorylation is critical to sustained contractile activity, and this major design criterion is the focus of this review. Cell volume invested in mitochondria reduces the space available for generating contractile force, and this spatial balance between mitochondria acontractile elements to meet the varying sustained power demands across muscle types is another important design criterion. This is accomplished with remarkably similar mass-specific mitochondrial protein composition across muscle types, implying that it is the organization of mitochondria within the muscle cell that is critical to supporting sustained muscle function. Beyond the production of ATP, ubiquitous distribution of ATPases throughout the muscle requires rapid distribution of potential energy across these large cells. Distribution of potential energy has long been thought to occur primarily through facilitated metabolite diffusion, but recent analysis has questioned the importance of this process under normal physiological conditions. Recent structural and functional studies have supported the hypothesis that the mitochondrial reticulum provides a rapid energy distribution system via the conduction of the mitochondrial membrane potential to maintain metabolic homeostasis during contractile activity. We extensively review this aspect of the energy metabolism design contrasting it with metabolite diffusion models and how mitochondrial structure can play a role in the delivery of energy in the striated muscle.
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Affiliation(s)
- Brian Glancy
- Muscle Energetics Laboratory, National Heart, Lung, and Blood Insititute and National Institute of Arthritis and Musculoskeletal and Skin Disease, Bethesda, Maryland
- Laboratory of Cardiac Energetics, National Heart, Lung, and Blood Insititute, Bethesda, Maryland
| | - Robert S Balaban
- Muscle Energetics Laboratory, National Heart, Lung, and Blood Insititute and National Institute of Arthritis and Musculoskeletal and Skin Disease, Bethesda, Maryland
- Laboratory of Cardiac Energetics, National Heart, Lung, and Blood Insititute, Bethesda, Maryland
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Tanaka M, Kanazashi M, Matsumoto T, Kondo H, Ishihara A, Fujino H. Mild hyperbaric oxygen exposure attenuates rarefaction of capillary vessels in streptozotocin-induced diabetic soleus muscle in rats. Biomed Res 2021; 42:1-11. [PMID: 33563874 DOI: 10.2220/biomedres.42.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We examined the effects of mild hyperbaric oxygen (mHBO) exposure on capillary rarefaction in skeletal muscles of rats with diabetes. Streptozotocin (100 mg/kg) was administered to male Wistar rats via the tail vein to prepare a diabetic model. These rats were divided into 2 groups: the group with mHBO exposure (1.25 atmospheres absolute (ATA) with 36% oxygen; 3 h/day) and the group without mHBO exposure. Age-matched rats were used as the control group. Eight weeks later, the soleus of the rats was removed and then analyzed. With the onset of diabetes mellitus, capillary number, diameter, and volume in the soleus of the rats with diabetes decreased compared with those of the rats in the control group. In addition, increased anti-angiogenic thrombospondin-1 (TSP-1) and decreased pro-angiogenic murine double minute 2 (MDM-2) protein expressions were observed in the rats with diabetes. Alternatively, mHBO exposure attenuated the decrease in capillary diameter and volume in skeletal muscles of rats with diabetes, suppressed the overexpression of TSP-1, and restored the MDM-2 expression. These results indicate the exposure of mHBO partially attenuates capillary rarefaction in diabetic soleus muscle.
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Affiliation(s)
- Masayuki Tanaka
- Department of Physical Therapy, Faculty of Health Sciences, Okayama Healthcare Professional University
| | - Miho Kanazashi
- Department of Physical Therapy, Faculty of Health and Welfare, Prefectural University of Hiroshima
| | - Tomohiro Matsumoto
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University
| | - Hiroyo Kondo
- Department of Food Science and Nutrition, Nagoya Women's University.,Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences
| | - Akihiko Ishihara
- Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University
| | - Hidemi Fujino
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences
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Do skeletal muscle motor units and microvascular units align to help match blood flow to metabolic demand? Eur J Appl Physiol 2021; 121:1241-1254. [PMID: 33538852 DOI: 10.1007/s00421-021-04598-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 01/10/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE We explore the motor unit recruitment and control of perfusion of microvascular units in skeletal muscle to determine whether they coordinate to match blood flow to metabolic demand. METHODS The PubMed database was searched for historical, current and relevant literature. RESULTS A microvascular, or capillary unit consists of 2-20 individual capillaries. Individual capillaries within a capillary unit cannot increase perfusion independently of other capillaries within the unit. Capillary units perfuse a short segment of approx. 12 muscle fibres located beside each other. Motor units consist of muscle fibres that can be dispersed widely within the muscle volume. During a contraction, where not all motor units are recruited, muscle fibre contraction will result in increased perfusion of associated capillaries as well as all capillaries within that capillary unit. Perfusion of the entire capillary unit will result in an increased blood flow delivery to muscle fibres associated with active motor unit plus approximately 11 other inactive muscle fibres within the same region. This will result in an overperfusion of the muscle resulting in blood flow in excess of the muscle fibre needs. CONCLUSIONS Given the architecture of the capillary units and the dispersed nature of muscle fibres within a motor unit, during submaximal contractions, where not all motor units are recruited, there will be a greater perfusion to the muscle than that predicted by the number of active muscle fibres. Such overperfusion brings into question if blood flow and metabolic demand are as tightly matched as previously assumed.
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Kanazashi M, Tanaka M, Maezawa T, Fujino H. Effects of reloading after chronic neuromuscular inactivity on the three-dimensional capillary architecture in rat soleus muscle. Acta Histochem 2020; 122:151617. [PMID: 33066839 DOI: 10.1016/j.acthis.2020.151617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 10/23/2022]
Abstract
The purpose of the study was to investigate the effects of ambulatory reloading following hindlimb unloading on the three-dimensional (3D) capillary architecture of rat soleus muscle. In this study, 15 male Sprague-Dawley rats were used. The rats were randomly assigned to the following 3 groups: a normal weight bearing control group (CON), 14 days of hindlimb unloading group (HU), and 14 days of hindlimb unloading followed by 7 days of ambulatory reloading group (HU-RL). The capillary diameter and volume were measured using confocal laser microscopy, and capillary number was determined by two-dimensional (2D) capillary staining in the soleus muscle of each group. The capillary diameter and volume as well as the capillary number were significantly lower in the HU group than in the CON group and significantly higher in the HU-RL group than in the HU group. These results provided novel information about the effectiveness of reloading following unloading on not only the 2D increase in capillary number but also the 3D capillary remodeling in the diameter and volume within the unloaded soleus muscle.
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Tanaka M, Kanazashi M, Maeshige N, Kondo H, Ishihara A, Fujino H. Protective effects of Brazilian propolis supplementation on capillary regression in the soleus muscle of hindlimb-unloaded rats. J Physiol Sci 2019; 69:223-233. [PMID: 30232713 PMCID: PMC10717714 DOI: 10.1007/s12576-018-0639-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 09/07/2018] [Indexed: 02/06/2023]
Abstract
The protective effects of Brazilian propolis on capillary regression induced by chronically neuromuscular inactivity were investigated in rat soleus muscle. Four groups of male Wistar rat were used in this study; control (CON), control plus Brazilian propolis supplementation (CON + PP), 2-week hindlimb unloading (HU), and 2-week hindlimb unloading plus Brazilian propolis supplementation (HU + PP). The rats in the CON + PP and HU + PP groups received two oral doses of 500 mg/kg Brazilian propolis daily (total daily dose 1000 mg/kg) for 2 weeks. Unloading resulted in a decrease in capillary number, luminal diameter, and capillary volume, and an increase in the expression of anti-angiogenic factors, such as p53 and TSP-1, within the soleus muscle. Brazilian propolis supplementation, however, prevented these changes in capillary structure due to unloading through the stimulation of pro-angiogenic factors and suppression of anti-angiogenic factors. These results suggest that Brazilian propolis is a potential non-drug therapeutic agent against capillary regression induced by chronic unloading.
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Affiliation(s)
- Masayuki Tanaka
- Department of Physical Therapy, Faculty of Human Sciences, Osaka University of Human Sciences, 1-4-1 Shojaku, Settsu, Osaka, 566-8501, Japan
| | - Miho Kanazashi
- Department of Physical Therapy, Faculty of Health and Welfare, Prefectural University of Hiroshima, 1-1 Gakuen-cho, Mihara, Hiroshima, 723-0053, Japan
| | - Noriaki Maeshige
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan
| | - Hiroyo Kondo
- Department of Food Science and Nutrition, Nagoya Women's University, Nagoya, 4-21 Shioji-cho, Mizuho-ku, Nagoya, Aichi, 467-8611, Japan
| | - Akihiko Ishihara
- Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-nihonmatsu-cho, Sakyo-ku, Kyoto, Kyoto, 606-8501, Japan
| | - Hidemi Fujino
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan.
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Wang Y, Zhao H, Fei D, Shao Y, Liu J, Jiang G, Xing M. Discrepant effects of copper (II) stress on different types of skeletal muscles in chicken: Elements and amino acids. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 167:227-235. [PMID: 30342355 DOI: 10.1016/j.ecoenv.2018.10.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 09/19/2018] [Accepted: 10/05/2018] [Indexed: 06/08/2023]
Abstract
Different distributions of 28 elements and 17 amino acids in pectoralis, wing biceps brachii and leg gastrocnemius of chicken upon CuSO4 (300 mg/kg) exposure for 90 days were investigated. Accompanied by copper accumulation, pathological injuries were observed in those three kinds of skeletal muscles using histological and ultrastructural methods. Based on data obtained, we analyzed leg gastrocnemius displayed the most increases (P < 0.000) in all three kinds of elements detected, including macroelements (131%), essential microelements (129%) and toxic microelements (179%) than the other two skeletal muscles. Furthermore, decreased total amino acids (P = 0.006), a susceptibility of lipid peroxidation/oxidative stress and a disequilibrium of nutrition and taste were analyzed in the leg gastrocnemius, indicating an unsuitability for human consumption. Intriguingly, these anomalies were scarce in pectoralis and wing biceps brachii. Combined with multivariate analysis we may conclude that leg gastrocnemius are more vulnerable to copper stress than pectoralis and wing biceps brachii in chicken.
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Affiliation(s)
- Yu Wang
- College of Wildlife Resources, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Hongjing Zhao
- College of Wildlife Resources, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Dongxue Fei
- College of Wildlife Resources, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Yizhi Shao
- College of Wildlife Resources, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Juanjuan Liu
- College of Wildlife Resources, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China
| | - Guangshun Jiang
- College of Wildlife Resources, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China.
| | - Mingwei Xing
- College of Wildlife Resources, Northeast Forestry University, Harbin 150040, Heilongjiang, PR China.
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Wang Y, Zhao H, Shao Y, Liu J, Li J, Luo L, Xing M. Copper (II) and/or arsenite-induced oxidative stress cascades apoptosis and autophagy in the skeletal muscles of chicken. CHEMOSPHERE 2018; 206:597-605. [PMID: 29778937 DOI: 10.1016/j.chemosphere.2018.05.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/26/2018] [Accepted: 05/02/2018] [Indexed: 06/08/2023]
Abstract
Arsenic (As) is a ubiquitous environmental toxin and robust inducer of oxidative stress (OxS). Copper (Cu) is an essential microelement, which participates in OxS as a cofactor for certain enzymes, with narrow optimal range between essential and toxic concentrations. However, their effects are rarely studied in chicken skeletal muscles, which have soaring per capita consumption andare susceptible to oxidative damage. In the present study, we demonstrated that the administration of copper sulfate (300 mg kg-1) or arsenite (30 mg kg-1) individually or their co-administration leads to varying degrees of OxS in the skeletal muscles of chickens. Corresponding to the protein expression pattern, the mRNA levels of caspase, B-cell lymphoma-2 (Bcl-2) families, and autophagy-related genes were also compromised in the experimental groups, indicating the involvement of both apoptotic and autophagic cell death. Additionally, rampant mitochondrial fission caused the vicious cycle between imbalanced mitochondrial dynamics and OxS, thus tethering intracellular homeostasis. The abovementioned muscle damage and index anomalies were time dependent, and more deteriorated effects were observed in Cu2+ and arsenite co-administered groups than those in groups administered Cu2+ and arsenite alone. Intriguingly, in the studied skeletal muscles, namely wing biceps brachii and leg gastrocnemius, there were conspicuous differences in oxidative toxicity susceptibility, which needs further study. The present study showed that Cu and/or As induce oxidative damage in chicken skeletal muscles and discussed its mechanism in terms of apoptosis, autophagy, and mitochondrial dynamics, thus voicing concerns about poultry breeding areas cross-contaminated with Cu2+ and arsenite.
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Affiliation(s)
- Yu Wang
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Hongjing Zhao
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Yizhi Shao
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Juanjuan Liu
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Jinglun Li
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Liyang Luo
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China.
| | - Mingwei Xing
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China.
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Wu CJ, Kao TW, Chang YW, Peng TC, Wu LW, Yang HF, Chen WL. Does the Additional Component of Calf Circumference Refine Metabolic Syndrome in Correlating With Cardiovascular Risk? J Clin Endocrinol Metab 2018; 103:1151-1160. [PMID: 29346655 DOI: 10.1210/jc.2017-02320] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 01/10/2018] [Indexed: 01/10/2023]
Abstract
CONTEXT Calf circumference (CC) was a useful anthropometric tool, but there was limited study on the effect of CC on metabolic syndrome (MetS) for cardiovascular risk. OBJECTIVE The objective of our study was to determine whether adding CC as a component of MetS refined correlating MetS with cardiovascular, all-cause, and cancer mortality risks. DESIGN, SETTING, PATIENTS, AND INTERVENTIONS From the National Health and Nutrition Examination Survey data set for 1999 through 2002, we analyzed four types of MetS: (1) increased waist circumference and two or more of four MetS components (WaistMetS); (2) decreased CC and two or more of four MetS components (CalfMetS); (3) increased waist-to-calf ratio and two or more of four MetS components (WCRMetS); and (4) decreased CC and three or more of five MetS components (CC+MetS). PRIMARY OUTCOME MEASURE The cause-specific hazard ratios were measured as categorized by the four types of MetS. RESULTS For cardiovascular mortality, the adjusted hazard ratios for WaistMetS, CalfMetS, WCRMetS, and CC+MetS were 1.867, 1.871, 1.949, and 2.306, respectively (all P < 0.001). Notably, CalfMetS showed the strongest positive correlation with serum C-reactive protein levels, and WCRMetS had the strongest positive relationship with homeostasis model assessment of insulin resistance. CONCLUSIONS Adding CC to the components of MetS correlated with higher cardiovascular and all-cause mortality risk than the traditional definition of MetS.
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Affiliation(s)
- Chen-Jung Wu
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Family Medicine, Department of Community Medicine, Taoyuan Armed Forces General Hospital, Taoyuan, Taiwan, Republic of China
| | - Tung-Wei Kao
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Graduate Institute of Clinical Medical, College of Medicine, National Taiwan University, Taipei, Taiwan, Republic of China
| | - Yaw-Wen Chang
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Tao-Chun Peng
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Li-Wei Wu
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Hui-Fang Yang
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Wei-Liang Chen
- Division of Family Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
- School of Medicine, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
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Baum O, Jentsch L, Odriozola A, Tschanz SA, Olfert IM. Ultrastructure of Skeletal Muscles in Mice Lacking Muscle‐Specific VEGF Expression. Anat Rec (Hoboken) 2017; 300:2239-2249. [DOI: 10.1002/ar.23644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 04/11/2017] [Accepted: 04/30/2017] [Indexed: 01/22/2023]
Affiliation(s)
- Oliver Baum
- Institute of Physiology, Charité‐Universitätsmedizin BerlinBerlin Germany
| | - Lena Jentsch
- Institute of Anatomy, University of BernBern Switzerland
| | | | | | - I. Mark Olfert
- West Virginia Clinical and Translational Institute, Department of Exercise PhysiologyWest Virginia University School of MedicineMorgantown West Virginia
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Hirayama Y, Nakanishi R, Tategaki A, Maeshige N, Kondo H, Ishihara A, Roy RR, Fujino H. Enterococcus faeciumstrain R30 increases red blood cell velocity and prevents capillary regression in the soleus of hindlimb-unloaded rats via the eNOS/VEGF pathway. Microcirculation 2017; 24. [DOI: 10.1111/micc.12356] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 01/19/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Yusuke Hirayama
- Department of Rehabilitation Science; Graduate School of Health Sciences; Kobe University; Kobe Japan
| | - Ryosuke Nakanishi
- Department of Rehabilitation Science; Graduate School of Health Sciences; Kobe University; Kobe Japan
| | - Airo Tategaki
- Medical Device Development Laboratories; Kaneka Corporation; Takasago Japan
| | - Noriaki Maeshige
- Department of Rehabilitation Science; Graduate School of Health Sciences; Kobe University; Kobe Japan
| | - Hiroyo Kondo
- Department of Food Science and Nutrition; Nagoya Women's University; Nagoya Japan
| | - Akihiko Ishihara
- Graduate School of Human and Environmental Studies; Kyoto University; Kyoto Japan
| | - Roland R. Roy
- Department of Integrative Biology and Physiology; Brain Research Institute; University of California; Los Angeles CA USA
| | - Hidemi Fujino
- Department of Rehabilitation Science; Graduate School of Health Sciences; Kobe University; Kobe Japan
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13
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Murrant CL, Lamb IR, Novielli NM. Capillary endothelial cells as coordinators of skeletal muscle blood flow during active hyperemia. Microcirculation 2017; 24. [DOI: 10.1111/micc.12348] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 12/28/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Coral L. Murrant
- Department of Human Health and Nutritional Sciences; University of Guelph; Guelph ON Canada
| | - Iain R. Lamb
- Department of Human Health and Nutritional Sciences; University of Guelph; Guelph ON Canada
| | - Nicole M. Novielli
- Department of Human Health and Nutritional Sciences; University of Guelph; Guelph ON Canada
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Przygodda F, Manfredi LH, Machado J, Gonçalves DAP, Zanon NM, Bonagamba LGH, Machado BH, Kettelhut ÍC, Navegantes LCC. Acute intermittent hypoxia in rats activates muscle proteolytic pathways through a gluccorticoid-dependent mechanism. J Appl Physiol (1985) 2016; 122:1114-1124. [PMID: 27932681 DOI: 10.1152/japplphysiol.00977.2015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 11/18/2016] [Accepted: 12/03/2016] [Indexed: 02/08/2023] Open
Abstract
Although it is well known that chronic hypoxia induces muscle wasting, the effects of intermittent hypoxia on skeletal muscle protein metabolism remain unclear. We hypothesized that acute intermittent hypoxia (AIH), a challenge that activates the hypothalamic-pituitary-adrenal axis, would alter muscle protein homeostasis through a glucocorticoid-dependent mechanism. Three-week-old rats were submitted to adrenalectomy (ADX) and exposed to 8 h of AIH (6% O2 for 40 s at 9-min intervals). Animals were euthanized, and the soleus and extensor digitorum longus (EDL) muscles were harvested and incubated in vitro for measurements of protein turnover. AIH increased plasma levels of corticosterone and induced insulin resistance as estimated by the insulin tolerance test and lower rates of muscle glucose oxidation and the HOMA index. In both soleus and EDL muscles, rates of overall proteolysis increased after AIH. This rise was accompanied by an increased proteolytic activities of the ubiquitin(Ub)-proteasome system (UPS) and lysosomal and Ca2+-dependent pathways. Furthermore, AIH increased Ub-protein conjugates and gene expression of atrogin-1 and MuRF-1, two key Ub-protein ligases involved in muscle atrophy. In parallel, AIH increased the mRNA expression of the autophagy-related genes LC3b and GABARAPl1. In vitro rates of protein synthesis in skeletal muscles did not differ between AIH and control rats. ADX completely blocked the insulin resistance in hypoxic rats and the AIH-induced activation of proteolytic pathways and atrogene expression in both soleus and EDL muscles. These results demonstrate that AIH induces insulin resistance in association with activation of the UPS, the autophagic-lysosomal process, and Ca2+-dependent proteolysis through a glucocorticoid-dependent mechanism.NEW & NOTEWORTHY Since hypoxia is a condition in which the body is deprived of adequate oxygen supply and muscle wasting is induced, the present work provides evidence linking hypoxia to proteolysis through a glucocorticoid-dependent mechanism. We show that the activation of proteolytic pathways, atrophy-related genes, and insulin resistance in rats exposed to acute intermittent hypoxia was abolished by surgical removal of adrenal gland. This finding will be helpful for understanding of the muscle wasting in hypoxemic conditions.
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Affiliation(s)
- Franciele Przygodda
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Leandro Henrique Manfredi
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Federal University of Fronteira Sul, Chapecó, Santa Catarina, Brazil
| | - Juliano Machado
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Dawit A P Gonçalves
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; and
| | - Neusa M Zanon
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Leni G H Bonagamba
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Benedito H Machado
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ísis C Kettelhut
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; and
| | - Luiz C C Navegantes
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil;
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15
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Glancy B, Hsu LY, Dao L, Bakalar M, French S, Chess DJ, Taylor JL, Picard M, Aponte A, Daniels MP, Esfahani S, Cushman S, Balaban RS. In vivo microscopy reveals extensive embedding of capillaries within the sarcolemma of skeletal muscle fibers. Microcirculation 2015; 21:131-47. [PMID: 25279425 DOI: 10.1111/micc.12098] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 10/03/2013] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To provide insight into mitochondrial function in vivo, we evaluated the 3D spatial relationship between capillaries, mitochondria, and muscle fibers in live mice. METHODS 3D volumes of in vivo murine TA muscles were imaged by MPM. Muscle fiber type, mitochondrial distribution, number of capillaries, and capillary-to-fiber contact were assessed. The role of Mb-facilitated diffusion was examined in Mb KO mice. Distribution of GLUT4 was also evaluated in the context of the capillary and mitochondrial network. RESULTS MPM revealed that 43.6 ± 3.3% of oxidative fiber capillaries had ≥50% of their circumference embedded in a groove in the sarcolemma, in vivo. Embedded capillaries were tightly associated with dense mitochondrial populations lateral to capillary grooves and nearly absent below the groove. Mitochondrial distribution, number of embedded capillaries, and capillary-to-fiber contact were proportional to fiber oxidative capacity and unaffected by Mb KO. GLUT4 did not preferentially localize to embedded capillaries. CONCLUSIONS Embedding capillaries in the sarcolemma may provide a regulatory mechanism to optimize delivery of oxygen to heterogeneous groups of muscle fibers. We hypothesize that mitochondria locate to PV regions due to myofibril voids created by embedded capillaries, not to enhance the delivery of oxygen to the mitochondria.
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Affiliation(s)
- Brian Glancy
- Laboratory of Cardiac Energetics, NHLBI, Bethesda, Maryland, USA
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16
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Ishihara A, Nagatomo F, Terada M, Fujino H, Kondo H, Ishioka N. Effects of microgravity on the mouse triceps brachii muscle. Muscle Nerve 2015; 52:63-8. [PMID: 25307981 DOI: 10.1002/mus.24491] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Revised: 09/28/2014] [Accepted: 10/10/2014] [Indexed: 12/13/2022]
Abstract
INTRODUCTION In this study we investigated the effects of microgravity on the fiber properties of the mouse triceps brachii, a forelimb muscle that has no antigravity function. METHODS Mice (n = 7) were exposed to microgravity for 13 days on the space shuttle Atlantis (Space Transportation System-135). The fiber cross-sectional area (CSA) and succinate dehydrogenase (SDH) staining intensity of the triceps brachii muscle were compared with those of controls (n = 7). SDH activity in this muscle was also estimated. RESULTS Microgravity did not affect the body weight, muscle weight, or fiber CSA, but there was reduced SDH staining intensity of all types of fibers, irrespective of the muscle region (P < 0.05). Microgravity also reduced muscle SDH activity (P < 0.05). CONCLUSIONS Short-term exposure to microgravity induced a decrease in oxidative capacity, but not atrophy, in the triceps brachii muscle of mice.
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Affiliation(s)
- Akihiko Ishihara
- Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan
| | - Fumiko Nagatomo
- Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan
| | - Masahiro Terada
- Department of Cell Biology, Jikei University School of Medicine, Tokyo, Japan
| | - Hidemi Fujino
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Hiroyo Kondo
- Department of Food Sciences and Nutrition, Nagoya Women's University, Nagoya, Japan
| | - Noriaki Ishioka
- Department of Interdisciplinary Science, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
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17
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Kanazashi M, Tanaka M, Murakami S, Kondo H, Nagatomo F, Ishihara A, Roy RR, Fujino H. Amelioration of capillary regression and atrophy of the soleus muscle in hindlimb-unloaded rats by astaxanthin supplementation and intermittent loading. Exp Physiol 2014; 99:1065-77. [DOI: 10.1113/expphysiol.2014.079988] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Miho Kanazashi
- Department of Rehabilitation Science; Kobe University Graduate School of Health Sciences; Kobe Japan
| | - Masayuki Tanaka
- Department of Rehabilitation Science; Kobe University Graduate School of Health Sciences; Kobe Japan
| | | | - Hiroyo Kondo
- Department of Food Science and Nutrition; Nagoya Women's University; Nagoya Japan
| | - Fumiko Nagatomo
- Laboratory of Cell Biology and Life Science; Graduate School of Human and Environmental Studies; Kyoto University; Kyoto Japan
| | - Akihiko Ishihara
- Laboratory of Cell Biology and Life Science; Graduate School of Human and Environmental Studies; Kyoto University; Kyoto Japan
| | - Roland R. Roy
- Brain Research Institute and Department of Integrative Biology and Physiology; University of California; Los Angeles CA USA
| | - Hidemi Fujino
- Department of Rehabilitation Science; Kobe University Graduate School of Health Sciences; Kobe Japan
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18
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Takagi D, Morikami A, Kamo T, Fujita D, Goto M, Kubo Y, Saito M, Suzuki R, Kageyama M, Matsuura K, Nishida Y. The Association of Calf Circumference with Resting Pulse Rate in Community-dwelling Healthy Elderly Women -Pilot Study-. J Phys Ther Sci 2013; 25:705-7. [PMID: 24259834 PMCID: PMC3804995 DOI: 10.1589/jpts.25.705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 01/31/2013] [Indexed: 11/24/2022] Open
Abstract
[Purpose] High resting blood pressure and heart rate are associated with the risk of
cardiovascular events. In patients with decreasing amounts of slow twitch muscle fiber,
hypertension may develop and resting heart rate may increase. Measurement of the amount of
slow twitch muscle fiber and capillary density using muscle biopsy is inconvenient and
expensive. Therefore, a better screening test is required to determine these parameters
for prevention of cardiovascular events. In this study, relationships among calf
circumference, resting blood pressure, and pulse rate in the soleus muscle were
investigated. [Subjects] Healthy elderly women (n= 19, 61–84 years of age) living in the
community were the subjects of this study. [Methods] Blood pressure was measured using an
automatic hemodynamometer on the left arm. The calf circumference was measured, and pulse
rate was measured on the left radial artery for 1 min by palpation. [Results] No
correlations were observed between calf circumference, resting systolic or diastolic
pressure, pulse pressure, or mean blood pressure. However, an inverse correlation was
observed between calf circumference and resting pulse rate. [Conclusion] Calf
circumference measurement may be used as a screening test for resting pulse rate. This
test may be useful for the prevention of cardiovascular events.
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Affiliation(s)
- Daisuke Takagi
- Department of Physiological Sciences for Physical Therapy, Rehabilitation Sciences, Seirei Christopher University ; Department of Physical Therapy, Health Science University
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