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Zhou Z, Xue Y, Zhao Y, Mu X, Xu L. Effects of microcurrent therapy in promoting function and pain management of knee osteoarthritis: a systematic review and meta-analysis protocol. BMJ Open 2023; 13:e069036. [PMID: 37185645 PMCID: PMC10151844 DOI: 10.1136/bmjopen-2022-069036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
INTRODUCTION Microcurrent therapy (MCT) is a rising conservative treatment for patients with knee osteoarthritis (OA). Considering its potential benefits and convenience, MCT's application in those individuals with knee OA is capacious. However, no plausible clinical evidence has proved its unequivocal advantages in treating knee OA conservatively. The purpose of this study is to determine whether MCT is helpful in pain management and promoting function of knee OA and is safe in the treatment of knee OA in adult patients. METHODS AND ANALYSIS We will search through MEDLINE, Embase, Cochrane Library, Web of Science and Google Scholar from inception to 15 March 2023. Original studies will include randomised controlled trials of patients treated with MCT. Two authors will independently screen, select studies, extract data and perform risk of bias assessment. Data consistently reported across studies will be pooled using random-effects meta-analysis. Heterogeneity will be evaluated using Cochrane's Q statistic and quantified using I2 statistics. Graphical and formal statistical tests will be used to assess for publication bias. ETHICS AND DISSEMINATION Ethical approval will not be needed for this study as the data will be extracted from already published studies. The results of this review will be published in a peer-reviewed journal and presented at conferences. PROSPERO REGISTRATION NUMBER CRD42022319828.
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Affiliation(s)
- Zhuoluo Zhou
- Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Yuxin Xue
- Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Yi Zhao
- Orthopedics, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - Xiaohong Mu
- Orthopedics, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - Lin Xu
- Orthopedics, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
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2
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Wang Y, Lu J, Liu Y. Skeletal Muscle Regeneration in Cardiotoxin-Induced Muscle Injury Models. Int J Mol Sci 2022; 23:ijms232113380. [PMID: 36362166 PMCID: PMC9657523 DOI: 10.3390/ijms232113380] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
Skeletal muscle injuries occur frequently in daily life and exercise. Understanding the mechanisms of regeneration is critical for accelerating the repair and regeneration of muscle. Therefore, this article reviews knowledge on the mechanisms of skeletal muscle regeneration after cardiotoxin-induced injury. The process of regeneration is similar in different mouse strains and is inhibited by aging, obesity, and diabetes. Exercise, microcurrent electrical neuromuscular stimulation, and mechanical loading improve regeneration. The mechanisms of regeneration are complex and strain-dependent, and changes in functional proteins involved in the processes of necrotic fiber debris clearance, M1 to M2 macrophage conversion, SC activation, myoblast proliferation, differentiation and fusion, and fibrosis and calcification influence the final outcome of the regenerative activity.
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Combination Therapy of Polydeoxyribonucleotide and Microcurrent in Muscle Regeneration on Cast-Induced Muscle Atrophy in Rabbit. BIOMED RESEARCH INTERNATIONAL 2022; 2022:7469452. [DOI: 10.1155/2022/7469452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 10/12/2022] [Indexed: 11/18/2022]
Abstract
Background. The aim of this study was to evaluate how polydeoxyribonucleotide (PDRN) and microcurrent therapy (MT) functioned synergistically in a cast-immobilized rabbit model with an atrophied calf muscle. Methods. At the age of 12 weeks, 32 male New Zealand rabbits were enrolled in four groups. After 2 weeks of cast-immobilization, 4 procedures were performed on atrophied calf muscle [weekly two injections normal saline 0.2 ml injection group 1 (G1-NS), weekly two injections 0.2 ml PDRN injection group 2 (G2-PDRN), MT group 3 (G3-MT), and 0.2 ml PDRN injection with MT group 4 (G4-PDRN+MT)]. For 2 weeks, MT was used for 60 minutes each day. The calf circumference (CC), the thickness of gastrocnemius muscle (TGCM), and the tibial nerve compound muscle action potential (CMAP) were evaluated using ultrasound before and after 2 weeks of treatment. Proliferating cell nuclear antigen (PCNA), vascular endothelial growth factor, and platelet endothelial cell adhesion molecule-1 (PECAM-1) of GCM fibers (type I, type II, and total) were measured. Statistical analyses were performed using ANOVA. Results. The mean atrophic alterations of right CC, CMAP, and TGCM (medial/lateral) were substantially lower in G4-PDRN+MT than in the G1-NS, G2-PDRN, and G3-MT, respectively (
). Furthermore, mean CSAs (type I, type II, and total) of medial and lateral GCM muscle fibers in G4-PDRN+MT were significantly higher when compared to other three groups (
). In terms of the PCNA-, VEGF-, and PECAM-1-positive cell ratio of medial and lateral GCM muscle fibers, G4-PDRN+MT was considerably higher than G1-NS, G2-PDRN, and G3-MT (
). Conclusions. On the atrophied calf muscle of the rabbit model, PDRN injection combined with MT was more effective than PDRN injection alone, MT alone, and normal saline injection separately.
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Ogura Y, Sato S, Kurosaka M, Kotani T, Fujiya H, Funabashi T. Age-related decrease in muscle satellite cells is accompanied with diminished expression of early growth response 3 in mice. Mol Biol Rep 2019; 47:977-986. [PMID: 31734897 DOI: 10.1007/s11033-019-05189-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/09/2019] [Indexed: 12/15/2022]
Abstract
Skeletal muscle regeneration is mostly dependent on muscle satellite cells. Proper muscle regeneration requires enough number of satellite cells. Recent studies have suggested that the number of satellite cells in skeletal muscle declines as we age, leading to the impairment of muscle regeneration in older population. Our earlier study demonstrated that zinc finger transcription factor early growth response 3 (Egr3) plays an important role for maintaining the number of myoblasts, suggesting that age-related decrease in muscle satellite cell should be associated with the expression levels of Egr3. The aim of this study was to investigate whether aging would alter the Egr3 expression in satellite cells. A couple groups of male C57BL/6J mice were examined in this study: young (3 Mo) and old (17 Mo). Immunohistochemical staining showed that the satellite cell number decreased in normal and injured muscles of old mice. In fluorescence-activated cell sorting-isolated muscle satellite cells from normal and injured muscles, the mRNA expression of Egr3 was significantly decreased with age regardless of injury. In harmony with these results, Pax7 mRNA levels also decreased in the satellite cells from old mice. Alternatively, inhibition of Egr3 expression by shRNA decreased Pax7 protein expression in cultured myoblasts. These results suggest that Egr3 is associated with the age-related decline of muscle satellite cells in older population. Also, Egr3 might be implicated in the regulation of Pax7. Therefore, the loss of Egr3 expression may elucidate attenuated MSCs function and muscle regeneration in older age.
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Affiliation(s)
- Yuji Ogura
- Department of Physiology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 216-8511, Japan.
| | - Shuichi Sato
- School of Kinesiology, University of Louisiana at Lafayette, Lafayette, LA, USA
- New Iberia Research Center, University of Louisiana at Lafayette, New Iberia, LA, USA
| | - Mitsutoshi Kurosaka
- Department of Physiology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 216-8511, Japan
| | - Takashi Kotani
- Department of Orthopaedic Surgery, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Hiroto Fujiya
- Department of Sports Medicine, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Toshiya Funabashi
- Department of Physiology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 216-8511, Japan
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Lactate Stimulates a Potential for Hypertrophy and Regeneration of Mouse Skeletal Muscle. Nutrients 2019; 11:nu11040869. [PMID: 30999708 PMCID: PMC6520919 DOI: 10.3390/nu11040869] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/14/2019] [Accepted: 04/15/2019] [Indexed: 01/19/2023] Open
Abstract
The effects of lactate on muscle mass and regeneration were investigated using mouse skeletal muscle tissue and cultured C2C12 cells. Male C57BL/6J mice were randomly divided into (1) control, (2) lactate (1 mol/L in distilled water, 8.9 mL/g body weight)-administered, (3) cardio toxin (CTX)-injected (CX), and (4) lactate-administered after CTX-injection (LX) groups. CTX was injected into right tibialis anterior (TA) muscle before the oral administration of sodium lactate (five days/week for two weeks) to the mice. Oral lactate administration increased the muscle weight and fiber cross-sectional area, and the population of Pax7-positive nuclei in mouse TA skeletal muscle. Oral administration of lactate also facilitated the recovery process of CTX-associated injured mouse TA muscle mass accompanied with a transient increase in the population of Pax7-positive nuclei. Mouse myoblast-derived C2C12 cells were differentiated for five days to form myotubes with or without lactate administration. C2C12 myotube formation with an increase in protein content, fiber diameter, length, and myo-nuclei was stimulated by lactate. These observations suggest that lactate may be a potential molecule to stimulate muscle hypertrophy and regeneration of mouse skeletal muscle via the activation of muscle satellite cells.
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Ohno Y, Egawa T, Yokoyama S, Fujiya H, Sugiura T, Ohira Y, Yoshioka T, Goto K. MENS-associated increase of muscular protein content via modulation of caveolin-3 and TRIM72. Physiol Res 2019; 68:265-273. [PMID: 30628834 DOI: 10.33549/physiolres.933992] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Microcurrent electrical neuromuscular stimulation (MENS) is known as an extracellular stimulus for the regeneration of injured skeletal muscle in sports medicine. However, the effects of MENS-associated increase in muscle protein content are not fully clarified. The purpose of this study was to investigate the effects of MENS on the muscular protein content, intracellular signals, and the expression level of caveolin-3 (Cav-3), tripartite motif-containing 72 (TRIM72) and MM isoenzyme of creatine kinase (CK-MM) in skeletal muscle using cell culture system. C2C12 myotubes on the 7th day of differentiation phase were treated with MENS (intensity: 10-20 microA, frequency: 0.3 Hz, pulse width: 250 ms, stimulation time: 15-120 min). MENS-associated increase in the protein content of myotubes was observed, compared to the untreated control level. MENS upregulated the expression of Cav-3, TRIM72, and CK-MM in myotubes. A transient increase in phosphorylation level of Akt was also observed. However, MENS had no effect on the phosphorylation level of p42/44 extracellular signal-regulated kinase-1/2 and 5'AMP-activated protein kinase. MENS may increase muscle protein content accompanied with a transient activation of Akt and the upregulation of Cav-3 and TRIM72.
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Affiliation(s)
- Y Ohno
- Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Aichi, Japan.
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Park GY, Kwon DR, Moon YS. Low-intensity microcurrent therapy promotes regeneration of atrophied calf muscles in immobilized rabbits. J Biomed Res 2018; 33:30. [PMID: 30418167 PMCID: PMC6352881 DOI: 10.7555/jbr.32.20180056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 07/05/2018] [Indexed: 11/03/2022] Open
Abstract
The purpose of this study was to investigate the intensity-specific regenerative effects of microcurrent therapy on gastrocnemius muscle atrophy induced by cast-immobilization in rabbits. Fifteen rabbits were randomly allocated to 3 groups after cast removal: cast-immobilization and sham microcurrent therapy for 2 weeks (group 1); cast-immobilization and microcurrent therapy (25 μA) for 2 weeks (group 2); cast-immobilization and microcurrent therapy (5,000 μA) for 2 weeks (group 3). Clinical parameters [calf circumference, compound muscle action potential (CMAP) of the tibial nerve, thickness of gastrocnemius muscle], cross sectional area of gastrocnemius muscle fibres, and immunohistochemistry was evaluated. The clinical parameters representing mean atrophic changes in group 2 were significantly lower than those in group 3. The cross sectional area of the gastrocnemius muscle fibres and immunohistochemical parameters in group 2 were significantly greater than those in group 3. The results showed that low-intensity microcurrent therapy can more effectively promote regeneration in atrophied gastrocnemius muscle than high-intensity microcurrent therapy.
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Affiliation(s)
- Gi Young Park
- . Department of Rehabilitation Medicine, Muscle Research Center, Catholic University of Daegu School of Medicine, Daegu 42472, Republic of Korea
| | - Dong Rak Kwon
- . Department of Rehabilitation Medicine, Muscle Research Center, Catholic University of Daegu School of Medicine, Daegu 42472, Republic of Korea
| | - Yong Suk Moon
- . Department of Anatomy, Catholic University of Daegu School of Medicine, Daegu 42472, Republic of Korea
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8
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Moon YS, Kwon DR, Lee YJ. Therapeutic effect of microcurrent on calf muscle atrophy in immobilized rabbit. Muscle Nerve 2018; 58:270-276. [PMID: 29466826 DOI: 10.1002/mus.26110] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2018] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Immobilization causes significant muscle loss. In this study we assessed the regenerative effect of microcurrent electrical stimulation (MES) on gastrocnemius muscle (GCM) atrophy induced by immobilization by cast (IC) in rabbits. METHODS Fifteen rabbits were divided into 3 groups: IC (group 1); IC and free re-ambulation for 2 weeks after cast removal (CR) (group 2); and IC and MES for 2 weeks after CR (group 3). We evaluated clinical parameters (calf circumference, compound muscle action potential of tibial nerve, and thickness of GCM by ultrasound), histomorphometric data (muscle composition and cross-sectional area), and immunohistochemistry. RESULTS Mean atrophic changes in clinical parameters in group 3 were significantly less than those in groups 1 and 2 (P < 0.05). Histomophometric and immunohistochemical parameters in group 3 were significantly greater than those in groups 1 and 2, respectively (P < 0.05). DISCUSSION MES prevents muscle atrophy and facilitates regeneration of muscle. Muscle Nerve 58: 270-276, 2018.
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Affiliation(s)
- Yong Suk Moon
- Department of Anatomy, Catholic University of Daegu School of Medicine, Daegu, South Korea
| | - Dong Rak Kwon
- Department of Rehabilitation Medicine, Catholic University of Daegu School of Medicine, 33 Duryugongwon-ro 17-gil Nam-Gu, Daegu, 42472, South Korea
| | - Yoon-Jin Lee
- Department of Biochemistry, College of Medicine, Soonchunhyang University, Cheonan, South Korea
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Chabert C, Khochbin S, Rousseaux S, Furze R, Smithers N, Prinjha R, Schlattner U, Pison C, Dubouchaud H. Muscle hypertrophy in hypoxia with inflammation is controlled by bromodomain and extra-terminal domain proteins. Sci Rep 2017; 7:12133. [PMID: 28935884 PMCID: PMC5608715 DOI: 10.1038/s41598-017-12112-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 08/30/2017] [Indexed: 11/09/2022] Open
Abstract
Some of the Chronic Obstructive Pulmonary Disease (COPD) patients engaged in exercise-based muscle rehabilitation programs are unresponsive. To unravel the respective role of chronic hypoxia and pulmonary inflammation on soleus muscle hypertrophic capacities, we challenged male Wistar rats to repeated lipopolysaccharide instillations, associated or not with a chronic hypoxia exposure. Muscle hypertrophy was initiated by bilateral ablation of soleus agonists 1 week before sacrifice. To understand the role played by the histone acetylation, we also treated our animals with an inhibitor of bromodomains and extra terminal proteins (I-BET) during the week after surgery. Pulmonary inflammation totally inhibited this hypertrophy response under both normoxic and hypoxic conditions (26% lower than control surgery, p < 0.05), consistent with the S6K1 and myogenin measurements. Changes in histone acetylation and class IIa histone deacetylases expression, following pulmonary inflammation, suggested a putative role for histone acetylation signaling in the altered hypertrophy response. The I-BET drug restored the hypertrophy response suggesting that the non-response of muscle to a hypertrophic stimulus could be modulated by epigenetic mechanisms, including histone-acetylation dependant pathways. Drugs targeting such epigenetic mechanisms may open therapeutic perspectives for COPD patients with systemic inflammation who are unresponsive to rehabilitation.
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Affiliation(s)
- Clovis Chabert
- Univ. Grenoble Alpes, Inserm, Laboratoire de Bioénergétique Fondamentale et Appliquée (LBFA), Grenoble, 38000, France
| | - Saadi Khochbin
- Univ. Grenoble Alpes, Inserm, CNRS, Institute for Advanced Biosciences (IAB), Grenoble, 38000, France
| | - Sophie Rousseaux
- Univ. Grenoble Alpes, Inserm, CNRS, Institute for Advanced Biosciences (IAB), Grenoble, 38000, France
| | - Rebecca Furze
- Epigenetics DPU, Immuno-Inflammation Therapy Area, Medicines Research Centre, GlaxoSmithKline R&D, Stevenage, SG1 2NY, England, UK
| | - Nicholas Smithers
- Epigenetics DPU, Immuno-Inflammation Therapy Area, Medicines Research Centre, GlaxoSmithKline R&D, Stevenage, SG1 2NY, England, UK
| | - Rab Prinjha
- Epigenetics DPU, Immuno-Inflammation Therapy Area, Medicines Research Centre, GlaxoSmithKline R&D, Stevenage, SG1 2NY, England, UK
| | - Uwe Schlattner
- Univ. Grenoble Alpes, Inserm, Laboratoire de Bioénergétique Fondamentale et Appliquée (LBFA), Grenoble, 38000, France
| | - Christophe Pison
- Univ. Grenoble Alpes, Inserm, Laboratoire de Bioénergétique Fondamentale et Appliquée (LBFA), Grenoble, 38000, France.,Univ. Grenoble Alpes, Inserm, CHU des Alpes, Laboratoire de Bioénergétique Fondamentale et Appliquée (LBFA), Grenoble, 38000, France
| | - Hervé Dubouchaud
- Univ. Grenoble Alpes, Inserm, Laboratoire de Bioénergétique Fondamentale et Appliquée (LBFA), Grenoble, 38000, France.
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Shibaguchi T, Sugiura T, Fujitsu T, Nomura T, Yoshihara T, Naito H, Yoshioka T, Ogura A, Ohira Y. Effects of icing or heat stress on the induction of fibrosis and/or regeneration of injured rat soleus muscle. J Physiol Sci 2016; 66:345-57. [PMID: 26759024 PMCID: PMC10717209 DOI: 10.1007/s12576-015-0433-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 12/18/2015] [Indexed: 11/24/2022]
Abstract
The effects of icing or heat stress on the regeneration of injured soleus muscle were investigated in male Wistar rats. Bupivacaine was injected into soleus muscles bilaterally to induce muscle injury. Icing (0 °C, 20 min) was carried out immediately after the injury. Heat stress (42 °C, 30 min) was applied every other day during 2-14 days after the bupivacaine injection. Injury-related increase in collagen deposition was promoted by icing. However, the level of collagen deposition in heat-stressed animals was maintained at control levels throughout the experimental period and was significantly lower than that in icing-treated animals at 15 and 28 days after bupivacaine injection. Furthermore, the recovery of muscle mass, protein content, and muscle fiber size of injured soleus toward control levels was partially facilitated by heat stress. These results suggest that, compared with icing, heat stress may be a beneficial treatment for successful muscle regeneration at least by reducing fibrosis.
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Affiliation(s)
- Tsubasa Shibaguchi
- Graduate School of Frontier Biosciences, Osaka University, 1-17 Machikaneyama-cho, Toyonaka City, Osaka, 560-0043, Japan.
| | - Takao Sugiura
- Department of Exercise and Health Sciences, Faculty of Education, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Takanori Fujitsu
- Department of Exercise and Health Sciences, Faculty of Education, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Takumi Nomura
- Department of Exercise and Health Sciences, Faculty of Education, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, Inzai City, Chiba, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Inzai City, Chiba, Japan
| | | | - Akihiko Ogura
- Graduate School of Frontier Biosciences, Osaka University, 1-17 Machikaneyama-cho, Toyonaka City, Osaka, 560-0043, Japan
| | - Yoshinobu Ohira
- Graduate School of Health and Sports Science, Doshisha University, Kyotanabe City, Kyoto, Japan
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Ohno Y, Matsuba Y, Hashimoto N, Sugiura T, Ohira Y, Yoshioka T, Goto K. Suppression of Myostatin Stimulates Regenerative Potential of Injured Antigravitational Soleus Muscle in Mice under Unloading Condition. Int J Med Sci 2016; 13:680-5. [PMID: 27647997 PMCID: PMC5027186 DOI: 10.7150/ijms.16267] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 07/20/2016] [Indexed: 11/05/2022] Open
Abstract
Effects of myostatin (MSTN)-suppression on the regeneration of injured skeletal muscle under unloading condition were investigated by using transgenic mice expressing a dominant-negative form of MSTN (MSTN-DN). Both MSTN-DN and wild-type (WT) mice were subjected to continuous hindlimb suspension (HS) for 6 weeks. Cardiotoxin (CTX) was injected into left soleus muscle under anesthesia 2 weeks after the initiation of HS. Then, the soleus muscles were excised following 6-week HS (4 weeks after CTX-injection). CTX-injection caused to reduce the soleus fiber cross-sectional area (CSA) in WT mice under both unloading and weight-bearing conditions, but not in MSTN-DN mice. Under unloading condition, CTX-injected muscle weight and fiber CSA in MSTN-DN mice were significantly higher than those in WT mice. CTX-injected muscle had many damaged and regenerating fibers having central nuclei in both WT and MSTN-DN mice. Significant increase in the population of Pax7-positive nuclei in CTX-injected muscle was observed in MSTN-DN mice, but not in WT mice. Evidences indicate that the suppression of MSTN cause to increase the regenerative potential of injured soleus muscle via the increase in the population of muscle satellite cells regardless of unloading conditions.
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Affiliation(s)
- Yoshitaka Ohno
- Laboratory of Physiology, School of Health Sciences, Toyohashi SOZO University, Toyohashi, Aichi, Japan
| | - Yusuke Matsuba
- Department of Orthopaedic Surgery, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
| | - Naohiro Hashimoto
- Department of Regenerative Medicine, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
| | - Takao Sugiura
- Faculty of Education, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Yoshinobu Ohira
- Graduate School of Health and Sports Science, Doshisha University, Kyotanabe, Kyoto, Japan
| | | | - Katsumasa Goto
- Laboratory of Physiology, School of Health Sciences, Toyohashi SOZO University, Toyohashi, Aichi, Japan;; Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi, Aichi, Japan
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12
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Ohno Y, Egawa T, Yokoyama S, Nakai A, Sugiura T, Ohira Y, Yoshioka T, Goto K. Deficiency of heat shock transcription factor 1 suppresses heat stress-associated increase in slow soleus muscle mass of mice. Acta Physiol (Oxf) 2015; 215:191-203. [PMID: 26347147 DOI: 10.1111/apha.12600] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 07/20/2015] [Accepted: 09/03/2015] [Indexed: 01/30/2023]
Abstract
AIM Effects of heat shock transcription factor 1 (HSF1) deficiency on heat stress-associated increase in slow soleus muscle mass of mice were investigated. METHODS Both HSF1-null and wild-type mice were randomly assigned to control and heat-stressed groups. Mice in heat-stressed group were exposed to heat stress (41 °C for 60 min) in an incubator without anaesthesia. RESULTS Significant increase in wet and dry weights, and protein content of soleus muscle in wild-type mice was observed seven days after the application of the heat stress. However, heat stress had no impact on soleus muscle mass in HSF1-null mice. Neither type of mice exhibited much effect of heat stress on HSF mRNA expression (HSF1, HSF2 and HSF4). On the other hand, heat stress upregulated heat shock proteins (HSPs) at the mRNA (HSP72) and protein (HSP72 and HSP110) levels in wild-type mice, but not in HSF1-null mice. The population of Pax7-positive nuclei relative to total myonuclei of soleus muscle in wild-type mice was significantly increased by heat stress, but not in HSF1-null mice. Furthermore, the absence of HSF1 gene suppressed heat stress-associated phosphorylation of Akt and p70 S6 kinase (p-p70S6K) in soleus muscle. CONCLUSION Heat stress-associated increase in skeletal muscle mass may be induced by HSF1 and/or HSF1-mediated stress response that activates muscle satellite cells and Akt/p70S6K signalling pathway.
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Affiliation(s)
- Y. Ohno
- Laboratory of Physiology; School of Health Sciences; Toyohashi SOZO University; Toyohashi Japan
| | - T. Egawa
- Department of Physiology; Graduate School of Health Sciences; Toyohashi SOZO University; Toyohashi Japan
- Research Fellow of the Japan Society for the Promotion of Science; Tokyo Japan
| | - S. Yokoyama
- Laboratory of Physiology; School of Health Sciences; Toyohashi SOZO University; Toyohashi Japan
| | - A. Nakai
- Department of Molecular Biology; Graduate School of Medicine; Yamaguchi University; Ube Japan
| | - T. Sugiura
- Faculty of Education; Yamaguchi University; Yamaguchi Japan
| | - Y. Ohira
- Graduate School of Health and Sports Science; Doshisha University; Kyotanabe Japan
| | | | - K. Goto
- Laboratory of Physiology; School of Health Sciences; Toyohashi SOZO University; Toyohashi Japan
- Department of Physiology; Graduate School of Health Sciences; Toyohashi SOZO University; Toyohashi Japan
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Ohira T, Wang XD, Ito T, Kawano F, Goto K, Izawa T, Ohno H, Kizaki T, Ohira Y. Macrophage deficiency in osteopetrotic (op/op) mice inhibits activation of satellite cells and prevents hypertrophy in single soleus fibers. Am J Physiol Cell Physiol 2015; 308:C848-55. [PMID: 25788575 DOI: 10.1152/ajpcell.00348.2014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 03/18/2015] [Indexed: 12/31/2022]
Abstract
Effects of macrophage on the responses of soleus fiber size to hind limb unloading and reloading were studied in osteopetrotic homozygous (op/op) mice with inactivated mutation of macrophage colony-stimulating factor (M-CSF) gene and in wild-type (+/+) and heterozygous (+/op) mice. The basal levels of mitotically active and quiescent satellite cell (-46 and -39% vs. +/+, and -40 and -30% vs. +/op) and myonuclear number (-29% vs. +/+ and -28% vs. +/op) in fibers of op/op mice were significantly less than controls. Fiber length and sarcomere number in op/op were also less than +/+ (-22%) and +/op (-21%) mice. Similar trend was noted in fiber cross-sectional area (CSA, -15% vs. +/+, P = 0.06, and -14% vs. +/op, P = 0.07). The sizes of myonuclear domain, cytoplasmic volume per myonucleus, were identical in all types of mice. The CSA, length, and the whole number of sarcomeres, myonuclei, and mitotically active and quiescent satellite cells, as well as myonuclear domain, in single muscle fibers were decreased after 10 days of unloading in all types of mice, although all of these parameters in +/+ and +/op mice were increased toward the control values after 10 days of reloading. However, none of these levels in op/op mice were recovered. Data suggest that M-CSF and/or macrophages are important to activate satellite cells, which cause increase of myonuclear number during fiber hypertrophy. However, it is unclear why their responses to general growth and reloading after unloading are different.
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Affiliation(s)
- T Ohira
- Space Biomedical Research Office, Japan Aerospace Exploration Agency, Tsukuba City, Ibaraki, Japan
| | - X D Wang
- Graduate School of Medicine, Osaka University, Toyonaka City, Osaka, Japan
| | - T Ito
- Laboratory Animal Center, Yamagata University School of Medicine, Yamagata City, Yamagata, Japan
| | - F Kawano
- Graduate School of Medicine, Osaka University, Toyonaka City, Osaka, Japan
| | - K Goto
- Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi City, Aichi, Japan
| | - T Izawa
- Graduate School of Health and Sports Science, Doshisha University, Kyotanabe City, Kyoto, Japan; Research Center for Adipocyte and Muscle Science, Doshisha University, Kyotanabe City, Kyoto, Japan; and
| | - H Ohno
- Department of Molecular Predictive Medicine and Sport Science, School of Medicine, Kyorin University, Mitaka City, Tokyo, Japan
| | - T Kizaki
- Department of Molecular Predictive Medicine and Sport Science, School of Medicine, Kyorin University, Mitaka City, Tokyo, Japan
| | - Y Ohira
- Graduate School of Health and Sports Science, Doshisha University, Kyotanabe City, Kyoto, Japan; Research Center for Adipocyte and Muscle Science, Doshisha University, Kyotanabe City, Kyoto, Japan; and
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14
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Ohno Y, Sugiura T, Ohira Y, Yoshioka T, Goto K. Loading-associated expression of TRIM72 and caveolin-3 in antigravitational soleus muscle in mice. Physiol Rep 2014; 2:2/12/e12259. [PMID: 25539835 PMCID: PMC4332229 DOI: 10.14814/phy2.12259] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Effects of mechanical loading on the expression level of tripartite motif-containing 72 (TRIM72) and caveolin-3 (Cav-3) in mouse soleus muscle were investigated. Mice were subjected to (1) continuous hindlimb suspension (HS) for 2 weeks followed by 1-week ambulation recovery or (2) functional overloading (FO) on the soleus by cutting the distal tendons of the plantaris and gastrocnemius muscles. Soleus muscle atrophy was induced by 2-week hindlimb suspension (HS). Reloading-associated regrowth of atrophied soleus muscle was observed by 1-week reloading following HS. HS also depressed the expression level of insulin receptor substrate-1 (IRS-1) mRNA, TRIM72, Cav-3, and phosphorylated Akt (p-Akt)/total Akt (t-Akt), but increased the phosphorylated level of p38 mitogen-activated protein kinase (p-p38MAPK) in soleus muscle. Thereafter, the expression level of MyoD mRNA, TRIM72 (mRNA, and protein), and Cav-3 was significantly increased and recovered to the basal level during 1-week reloading after HS. Although IRS-1 expression was also upregulated by reloading, the expression level was significantly lower than that before HS. Significant increase in p-Akt and phosphorylated p70 S6 kinase (p-p70S6K) was observed by 1-day reloading. On the other hand, 1-week functional overloading (FO) induced soleus muscle hypertrophy. In FO-associated hypertrophied soleus muscle, the expression level of IRS-1 mRNA, MyoD mRNA, TRIM72 mRNA, p-Akt, and p-p70S6K was increased, but the expression of Cav-3 and p-p38MAPK was decreased. FO had no effect on the protein expression level of TRIM72. These observations suggest that the loading-associated upregulation of TRIM72 protein in skeletal muscle may depress the regrowth of atrophied muscle via a partial suppression of IRS-1. In addition, downregulation of Cav-3 in skeletal muscle may depress overloading-induced muscle hypertrophy.
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Affiliation(s)
- Yoshitaka Ohno
- Laboratory of Physiology, School of Health Sciences, Toyohashi SOZO University, Toyohashi, 440-8511, Japan
| | - Takao Sugiura
- Faculty of Education, Yamaguchi University, Yamaguchi, 753-8513, Japan
| | - Yoshinobu Ohira
- Faculty and Graduate School of Health and Sports Sciences, Doshisha University, Kyotanabe, 610-0394, Japan
| | | | - Katsumasa Goto
- Laboratory of Physiology, School of Health Sciences, Toyohashi SOZO University, Toyohashi, 440-8511, Japan Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi, 440-8511, Japan
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15
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Goto A, Ohno Y, Ikuta A, Suzuki M, Ohira T, Egawa T, Sugiura T, Yoshioka T, Ohira Y, Goto K. Up-regulation of adiponectin expression in antigravitational soleus muscle in response to unloading followed by reloading, and functional overloading in mice. PLoS One 2013; 8:e81929. [PMID: 24324732 PMCID: PMC3855747 DOI: 10.1371/journal.pone.0081929] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 10/28/2013] [Indexed: 12/28/2022] Open
Abstract
The purpose of this study was to investigate the expression level of adiponectin and its related molecules in hypertrophied and atrophied skeletal muscle in mice. The expression was also evaluated in C2C12 myoblasts and myotubes. Both mRNA and protein expression of adiponectin, mRNA expression of adiponectin receptor (AdipoR) 1 and AdipoR2, and protein expression of adaptor protein containing pleckstrin homology domain, phosphotyrosine binding domain, and leucine zipper motif 1 (APPL1) were observed in C2C12 myoblasts. The expression levels of these molecules in myotubes were higher than those in myoblasts. The expression of adiponectin-related molecules in soleus muscle was observed at mRNA (adiponectin, AdipoR1, AdipoR2) and protein (adiponectin, APPL1) levels. The protein expression levels of adiponectin and APPL1 were up-regulated by 3 weeks of functional overloading. Down-regulation of AdipoR1 mRNA, but not AdipoR2 mRNA, was observed in atrophied soleus muscle. The expression of adiponectin protein, AdipoR1 mRNA, and APPL1 protein was up-regulated during regrowth of unloading-associated atrophied soleus muscle. Mechanical loading, which could increase skeletal muscle mass, might be a useful stimulus for the up-regulations of adiponectin and its related molecules in skeletal muscle.
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Affiliation(s)
- Ayumi Goto
- Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
| | - Yoshitaka Ohno
- Laboratory of Physiology, School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
| | - Akihiro Ikuta
- Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
| | - Miho Suzuki
- Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
| | - Tomotaka Ohira
- Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
| | - Tatsuro Egawa
- Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
- Research Fellow of the Japan Society for the Promotion of Science, Tokyo, Japan
| | - Takao Sugiura
- Department of Exercise and Health Sciences, Yamaguchi University, Yamaguchi, Japan
| | | | | | - Katsumasa Goto
- Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
- Laboratory of Physiology, School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
- * E-mail:
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16
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Heat shock transcription factor 1-deficiency attenuates overloading-associated hypertrophy of mouse soleus muscle. PLoS One 2013; 8:e77788. [PMID: 24167582 PMCID: PMC3805596 DOI: 10.1371/journal.pone.0077788] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 09/11/2013] [Indexed: 02/08/2023] Open
Abstract
Hypertrophic stimuli, such as mechanical stress and overloading, induce stress response, which is mediated by heat shock transcription factor 1 (HSF1), and up-regulate heat shock proteins (HSPs) in mammalian skeletal muscles. Therefore, HSF1-associated stress response may play a key role in loading-associated skeletal muscle hypertrophy. The purpose of this study was to investigate the effects of HSF1-deficiency on skeletal muscle hypertrophy caused by overloading. Functional overloading on the left soleus was performed by cutting the distal tendons of gastrocnemius and plantaris muscles for 4 weeks. The right muscle served as the control. Soleus muscles from both hindlimbs were dissected 2 and 4 weeks after the operation. Hypertrophy of soleus muscle in HSF1-null mice was partially inhibited, compared with that in wild-type (C57BL/6J) mice. Absence of HSF1 partially attenuated the increase of muscle wet weight and fiber cross-sectional area of overloaded soleus muscle. Population of Pax7-positive muscle satellite cells in HSF1-null mice was significantly less than that in wild-type mice following 2 weeks of overloading (p<0.05). Significant up-regulations of interleukin (IL)-1β and tumor necrosis factor mRNAs were observed in HSF1-null, but not in wild-type, mice following 2 weeks of overloading. Overloading-related increases of IL-6 and AFT3 mRNA expressions seen after 2 weeks of overloading tended to decrease after 4 weeks in both types of mice. In HSF1-null mice, however, the significant overloading-related increase in the expression of IL-6, not ATF3, mRNA was noted even at 4th week. Inhibition of muscle hypertrophy might be attributed to the greater and prolonged enhancement of IL-6 expression. HSF1 and/or HSF1-mediated stress response may, in part, play a key role in loading-induced skeletal muscle hypertrophy.
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17
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Nishizawa S, Koya T, Ohno Y, Goto A, Ikuita A, Suzuki M, Ohira T, Egawa T, Nakai A, Sugiura T, Ohira Y, Yoshioka T, Beppu M, Goto K. Regeneration of injured skeletal muscle in heat shock transcription factor 1-null mice. Physiol Rep 2013; 1:e00071. [PMID: 24303143 PMCID: PMC3835021 DOI: 10.1002/phy2.71] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 07/27/2013] [Accepted: 07/29/2013] [Indexed: 02/03/2023] Open
Abstract
The purpose of this study was to investigate a role of heat shock transcription factor 1 (HSF1)-mediated stress response during regeneration of injured soleus muscle by using HSF1-null mice. Cardiotoxin (CTX) was injected into the left muscle of male HSF1-null and wild-type mice under anesthesia with intraperitoneal injection of pentobarbital sodium. Injection of physiological saline was also performed into the right muscle. Soleus muscles were dissected bilaterally 2 and 4 weeks after the injection. The relative weight and fiber cross-sectional area in CTX-injected muscles of HSF1-null, not of wild-type, mice were less than controls with injection of physiological saline 4 weeks after the injury, indicating a slower regeneration. Injury-related increase of Pax7-positive muscle satellite cells in HSF1-null mice was inhibited versus wild-type mice. HSF1-deficiency generally caused decreases in the basal expression levels of heat shock proteins (HSPs). But the mRNA expression levels of HSP25 and HSP90α in HSF1-null mice were enhanced in response to CTX-injection, compared with wild-type mice. Significant up-regulations of proinflammatory cytokines, such as interleukin (IL) -6, IL-1β, and tumor necrosis factor mRNAs, with greater magnitude than in wild-type mice were observed in HSF1-deficient mouse muscle. HSF1 and/or HSF1-mediated stress response may play a key role in the regenerating process of injured skeletal muscle. HSF1 deficiency may depress the regenerating process of injured skeletal muscle via the partial depression of increase in Pax7-positive satellite cells. HSF1-deficiency-associated partial depression of skeletal muscle regeneration might also be attributed to up-regulation of proinflammatory cytokines.
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Affiliation(s)
- Sono Nishizawa
- Department of Orthopaedic Surgery, St. Marianna University School of Medicine Kawasaki, Japan
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18
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Ultrasound Modulates the Inflammatory Response and Promotes Muscle Regeneration in Injured Muscles. Ann Biomed Eng 2013; 41:1095-105. [DOI: 10.1007/s10439-013-0757-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Accepted: 01/29/2013] [Indexed: 11/30/2022]
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19
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Ohno Y, Fujiya H, Goto A, Nakamura A, Nishiura Y, Sugiura T, Ohira Y, Yoshioka T, Goto K. Microcurrent electrical nerve stimulation facilitates regrowth of mouse soleus muscle. Int J Med Sci 2013; 10:1286-94. [PMID: 23983587 PMCID: PMC3752717 DOI: 10.7150/ijms.5985] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 07/30/2013] [Indexed: 11/05/2022] Open
Abstract
Microcurrent electrical nerve stimulation (MENS) has been used to facilitate recovery from skeletal muscle injury. However, the effects of MENS on unloading-associated atrophied skeletal muscle remain unclear. Effects of MENS on the regrowing process of unloading-associated atrophied skeletal muscle were investigated. Male C57BL/6J mice (10-week old) were randomly assigned to untreated normal recovery (C) and MENS-treated (M) groups. Mice of both groups are subjected to continuous hindlimb suspension (HS) for 2 weeks followed by 7 days of ambulation recovery. Mice in M group were treated with MENS for 60 min 1, 3, and 5 days following HS, respectively, under anesthesia. The intensity, the frequency, and the pulse width of MENS were set at 10 μA, 0.3 Hz, and 250 msec, respectively. Soleus muscles were dissected before and immediately after, 1, 3 and 7 days after HS. Soleus muscle wet weight and protein content were decreased by HS. The regrowth of atrophied soleus muscle in M group was faster than that in C group. Decrease in the reloading-induced necrosis of atrophied soleus was facilitated by MENS. Significant increases in phosphorylated levels of p70 S6 kinase and protein kinase B (Akt) in M group were observed, compared with C group. These observations are consistent with that MENS facilitated regrowth of atrophied soleus muscle. MENS may be a potential extracellular stimulus to activate the intracellular signals involved in protein synthesis.
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Affiliation(s)
- Yoshitaka Ohno
- Laboratory of Physiology, School of Health Sciences, Toyohashi SOZO University, Toyohashi, Aichi, Japan
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20
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Touchberry CD, Gupte AA, Bomhoff GL, Graham ZA, Geiger PC, Gallagher PM. Acute heat stress prior to downhill running may enhance skeletal muscle remodeling. Cell Stress Chaperones 2012; 17:693-705. [PMID: 22589083 PMCID: PMC3468678 DOI: 10.1007/s12192-012-0343-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 04/16/2012] [Accepted: 04/23/2012] [Indexed: 02/07/2023] Open
Abstract
Heat shock proteins (HSPs) are chaperones that are known to have important roles in facilitating protein synthesis, protein assembly and cellular protection. While HSPs are known to be induced by damaging exercise, little is known about how HSPs actually mediate skeletal muscle adaption to exercise. The purpose of this study was to determine the effects of a heat shock pretreatment and the ensuing increase in HSP expression on early remodeling and signaling (2 and 48 h) events of the soleus (Sol) muscle following a bout of downhill running. Male Wistar rats (10 weeks old) were randomly assigned to control, eccentric exercise (EE; downhill running) or heat shock + eccentric exercise (HS; 41°C for 20 min, 48 h prior to exercise) groups. Markers of muscle damage, muscle regeneration and intracellular signaling were assessed. The phosphorylation (p) of HSP25, Akt, p70s6k, ERK1/2 and JNK proteins was also performed. As expected, following exercise the EE group had increased creatine kinase (CK; 2 h) and mononuclear cell infiltration (48 h) compared to controls. The EE group had an increase in p-HSP25, but there was no change in HSP72 expression, total protein concentration, or neonatal MHC content. Additionally, the EE group had increased p-p70s6k, p-ERK1/2, and p-JNK (2 h) compared to controls; however no changes in p-Akt were seen. In contrast, the HS group had reduced CK (2 h) and mononuclear cell infiltration (48 h) compared to EE. Moreover, the HS group had increased HSP72 content (2 and 48 h), total protein concentration (48 h), neonatal MHC content (2 and 48 h), p-HSP25 and p-p70s6k (2 h). Lastly, the HS group had reduced p-Akt (48 h) and p-ERK1/2 (2 h). These data suggest that heat shock pretreatment and/or the ensuing HSP72 response may protect against muscle damage, and enhance increases in total protein and neonatal MHC content following exercise. These changes appear to be independent of Akt and MAPK signaling pathways.
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Affiliation(s)
- Chad D. Touchberry
- University of Missouri-Kansas City, School of Medicine - Basic Medical Science, Health Sciences Building, 2464 Charlotte Street, Room 2211, Kansas City, MO 64108 USA
| | - Anisha A. Gupte
- Muscle Physiology Laboratory, University of Kansas Medical Center, Kansas City, KS 66160 USA
| | - Gregory L. Bomhoff
- Muscle Physiology Laboratory, University of Kansas Medical Center, Kansas City, KS 66160 USA
| | - Zachary A. Graham
- Applied Physiology Laboratory, University of Kansas, 1301 Sunnyside Avenue, Lawrence, KS 66045 USA
| | - Paige C. Geiger
- Muscle Physiology Laboratory, University of Kansas Medical Center, Kansas City, KS 66160 USA
| | - Philip M. Gallagher
- Applied Physiology Laboratory, University of Kansas, 1301 Sunnyside Avenue, Lawrence, KS 66045 USA
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Bunprajun T, Yimlamai T, Soodvilai S, Muanprasat C, Chatsudthipong V. Stevioside enhances satellite cell activation by inhibiting of NF-κB signaling pathway in regenerating muscle after cardiotoxin-induced injury. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:2844-2851. [PMID: 22316332 DOI: 10.1021/jf203711d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Stevioside, a noncaloric sweetener isolated from Stevia rebaudiana, exhibits anti-inflammatory and immunomodulatory effects through interference of nuclear factor (NF)-kappa B pathway. We investigated whether this anti-inflammatory property of stevioside could improve muscle regeneration following cardiotoxin-induced muscle injury. Adult male Wistar rats received stevioside orally at an accepted daily dosage of 10 mg kg⁻¹ for 7 days before cardiotoxin injection at the tibialis anterior (TA) muscle of the right hindlimb (the left hindlimb served as control), and stevioside administration was continued for 3 and 7 days. TA muscle was examined at days 3 and 7 postinjury. Although stevioside treatment had no significant effect in enhancing muscle regeneration as indicated by the absence of decreased muscle inflammation or improved myofibrillar protein content compared with vehicle treated injured group at day 7 postinjury, the number of MyoD-positive nuclei were increased (P < 0.05), with a corresponding decrease in NF-κB nuclear translocation (P < 0.05). This is the first study to demonstrate that stevioside could enhance satellite cell activation by modulation of the NF-κB signaling pathway in regenerating muscle following injury. Thus, stevioside may be beneficial as a dietary supplementation for promoting muscle recovery from injury. However, its pharmacological effect on muscle function recovery warrants further investigation.
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Affiliation(s)
- Tipwadee Bunprajun
- Department of Physiology, Faculty of Science, Mahidol University, Rama VI Road, Rajathevi, Bangkok, Thailand
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22
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Kohno S, Yamashita Y, Abe T, Hirasaka K, Oarada M, Ohno A, Teshima-Kondo S, Higashibata A, Choi I, Mills EM, Okumura Y, Terao J, Nikawa T. Unloading stress disturbs muscle regeneration through perturbed recruitment and function of macrophages. J Appl Physiol (1985) 2012; 112:1773-82. [PMID: 22383511 DOI: 10.1152/japplphysiol.00103.2012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Skeletal muscle is one of the most sensitive tissues to mechanical loading, and unloading inhibits the regeneration potential of skeletal muscle after injury. This study was designed to elucidate the specific effects of unloading stress on the function of immunocytes during muscle regeneration after injury. We examined immunocyte infiltration and muscle regeneration in cardiotoxin (CTX)-injected soleus muscles of tail-suspended (TS) mice. In CTX-injected TS mice, the cross-sectional area of regenerating myofibers was smaller than that of weight-bearing (WB) mice, indicating that unloading delays muscle regeneration following CTX-induced skeletal muscle damage. Delayed infiltration of macrophages into the injured skeletal muscle was observed in CTX-injected TS mice. Neutrophils and macrophages in CTX-injected TS muscle were presented over a longer period at the injury sites compared with those in CTX-injected WB muscle. Disturbance of activation and differentiation of satellite cells was also observed in CTX-injected TS mice. Further analysis showed that the macrophages in soleus muscles were mainly Ly-6C-positive proinflammatory macrophages, with high expression of tumor necrosis factor-α and interleukin-1β, indicating that unloading causes preferential accumulation and persistence of proinflammatory macrophages in the injured muscle. The phagocytic and myotube formation properties of macrophages from CTX-injected TS skeletal muscle were suppressed compared with those from CTX-injected WB skeletal muscle. We concluded that the disturbed muscle regeneration under unloading is due to impaired macrophage function, inhibition of satellite cell activation, and their cooperation.
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Affiliation(s)
- Shohei Kohno
- Department of Nutritional Physiology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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23
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Evans NP, Call JA, Bassaganya-Riera J, Robertson JL, Grange RW. Green tea extract decreases muscle pathology and NF-kappaB immunostaining in regenerating muscle fibers of mdx mice. Clin Nutr 2009; 29:391-8. [PMID: 19897286 DOI: 10.1016/j.clnu.2009.10.001] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2009] [Revised: 08/09/2009] [Accepted: 10/08/2009] [Indexed: 11/17/2022]
Abstract
BACKGROUND & AIMS Duchenne muscular dystrophy is a debilitating genetic disorder characterized by severe muscle wasting and early death in afflicted boys. The primary cause of this disease is mutations in the dystrophin gene resulting in massive muscle degeneration and inflammation. The purpose of this study was to determine if dystrophic muscle pathology and inflammation were decreased by pre-natal and early dietary intervention with green tea extract. METHODS Mdx breeder mice and pups were fed diets containing 0.25% or 0.5% green tea extract and compared to untreated mdx and C57BL/6J mice. Serum creatine kinase was assessed as a systemic indicator of muscle damage. Quantitative histopathological and immunohistochemical techniques were used to determine muscle pathology, macrophage infiltration, and NF-kappaB localization. RESULTS Early treatment of mdx mice with green tea extract significantly decreased serum creatine kinase by approximately 85% at age 42 days (P< or =0.05). In these mice, the area of normal fiber morphology was increased by as much as approximately 32% (P< or =0.05). The primary histopathological change was a approximately 21% decrease in the area of regenerating fibers (P< or =0.05). NF-kappaB staining in regenerating muscle fibers was also significantly decreased in green tea extract-treated mdx mice when compared to untreated mdx mice (P< or =0.05). CONCLUSION Early treatment with green tea extract decreases dystrophic muscle pathology potentially by regulating NF-kappaB activity in regenerating muscle fibers.
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MESH Headings
- Aging
- Animals
- Anti-Inflammatory Agents/pharmacology
- Anti-Inflammatory Agents/therapeutic use
- Antioxidants/pharmacology
- Antioxidants/therapeutic use
- Biomarkers/blood
- Dose-Response Relationship, Drug
- Female
- Macrophages/drug effects
- Male
- Mice
- Mice, Inbred mdx
- Muscle Fibers, Skeletal/drug effects
- Muscle Fibers, Skeletal/metabolism
- Muscle Fibers, Skeletal/pathology
- Muscle, Skeletal/drug effects
- Muscle, Skeletal/metabolism
- Muscle, Skeletal/pathology
- Muscular Dystrophy, Duchenne/blood
- Muscular Dystrophy, Duchenne/metabolism
- Muscular Dystrophy, Duchenne/pathology
- Muscular Dystrophy, Duchenne/prevention & control
- NF-kappa B/metabolism
- Necrosis/pathology
- Necrosis/prevention & control
- Phytotherapy
- Plant Extracts/pharmacology
- Plant Extracts/therapeutic use
- Pregnancy
- Prenatal Exposure Delayed Effects
- Random Allocation
- Regeneration/drug effects
- Tea/chemistry
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Affiliation(s)
- Nicholas P Evans
- Department of Human Nutrition, Foods and Exercise, Virginia Polytechnic Institute and State University, 338 Wallace Hall, Blacksburg, VA 24061, USA.
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