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Koma R, Shibaguchi T, Yamada T, Nonaka Y, Jue T, Yamazaki A, Masuda K. Endurance training increases mitochondrial myoglobin and enhances its interaction with complex IV in rat plantaris muscle. Acta Physiol (Oxf) 2024; 240:e14139. [PMID: 38509816 DOI: 10.1111/apha.14139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 03/02/2024] [Accepted: 03/11/2024] [Indexed: 03/22/2024]
Abstract
AIM Endurance exercise training is known to increase mitochondrial respiration in skeletal muscle. However, the molecular mechanisms behind this are not fully understood. Myoglobin (Mb) is a member of the globin family, which is highly expressed in skeletal and cardiac muscles. We recently found that Mb localizes inside mitochondria in skeletal muscle and interacts with cytochrome c oxidase subunit IV (COXIV), a subunit of mitochondrial complex IV, which regulates respiration by augmenting complex IV activity. In the present study, we investigated the effect of endurance training on Mb-COXIV interaction within mitochondria in rat skeletal muscle. METHODS Eight-week-old male Wistar rats were subjected to 6-week treadmill running training. Forty-eight hours after the last training session, the plantaris muscle was removed under anesthesia and used for biochemical analysis. RESULTS The endurance training increased mitochondrial content in the skeletal muscle. It also augmented complex IV-dependent oxygen consumption and complex IV activity in isolated mitochondria from skeletal muscle. Furthermore, endurance training increased Mb expression at the whole muscle level. Importantly, mitochondrial Mb content and Mb-COXIV binding were increased by endurance training. CONCLUSION These findings suggest that an increase in mitochondrial Mb and the concomitant enhancement of Mb interaction with COXIV may contribute to the endurance training-induced upregulation of mitochondrial respiration by augmenting complex IV activity.
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Affiliation(s)
- Rikuhide Koma
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan
- Research Fellowship for Young Scientists, Japan Society for the Promotion of Science, Tokyo, Japan
| | - Tsubasa Shibaguchi
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Japan
| | - Tatsuya Yamada
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Yudai Nonaka
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Japan
| | - Thomas Jue
- Department of Biochemistry and Molecular Medicine, University of California Davis, Davis, California, USA
| | - Ayaka Yamazaki
- Graduate School of Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Kazumi Masuda
- Institute of Human and Social Sciences, Kanazawa University, Kanazawa, Japan
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Koma R, Matsumoto T, Yamazaki A, Shibaguchi T, Jue T, Masuda K. Data on mitochondrial respiratory function in skeletal muscle of adult male mice in response to 3-weeks heat stress. Data Brief 2024; 53:110091. [PMID: 38328284 PMCID: PMC10847479 DOI: 10.1016/j.dib.2024.110091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/09/2024] Open
Abstract
Chronic heat stress induces mitochondrial adaptation in skeletal muscle. However, the effect of chronic heat stress on the respiratory function per mitochondria in skeletal muscle has not been well studied. Here, the present study reports on the effect of 3-weeks heat stress on muscle mitochondrial respiration using male C57BL/6JJ mice at age 21 weeks. Mice were randomly assigned to either the control group (n = 6) or passive heat group (n = 6). After 3-weeks of heat stress, the right triceps surae was removed and used for biochemical analysis. Protein expression was assessed by immunoblotting. Mitochondrial respiratory function was measured by Oxygraph-2k. The study also shows the impact of the heat stress on daily feeding, body weight, muscle weight, and protein expression of heat shock proteins (heat-response marker).
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Affiliation(s)
- Rikuhide Koma
- Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa, 920-1192, Japan
- Research Fellowship for Young Scientists, Japan Society for the Promotion of Science, Tokyo, 102-0083, Japan
| | - Tatsuki Matsumoto
- School of Teacher Education, Kanazawa University, Ishikawa, 920-1192, Japan
| | - Ayaka Yamazaki
- Graduate School of Frontier Science Initiative, Kanazawa University, Ishikawa, 920-1192, Japan
| | - Tsubasa Shibaguchi
- Institute of Liberal Arts and Science, Kanazawa University, Ishikawa, 920-1192, Japan
| | - Thomas Jue
- Department of Biochemistry and Molecular Medicine, University of California Davis, Davis, 95616-8635, USA
| | - Kazumi Masuda
- Institute of Human and Social Sciences, Kanazawa University, Ishikawa, 920-1192, Japan
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Koma R, Shibaguchi T, Araiso Y, Yamada T, Nonaka Y, Jue T, Masuda K. TOM complex-independent transport pathway of myoglobin into mitochondria in C2C12 myotubes. Physiol Rep 2023; 11:e15632. [PMID: 37020386 PMCID: PMC10076690 DOI: 10.14814/phy2.15632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 04/07/2023] Open
Abstract
Recently, we found that myoglobin (Mb) localizes in both the cytosol and mitochondrial intermembrane space in rodent skeletal muscle. Most proteins of the intermembrane space pass through the outer mitochondrial membrane via the translocase of the outer membrane (TOM) complex. However, whether the TOM complex imports Mb remains unknown. The purpose of this study was to investigate the involvement of the TOM complex in Mb import into the mitochondria. A proteinase K protection assay of mitochondria from C2C12 myotubes confirmed that Mb integrated into the mitochondria. An immunoprecipitation assay verified the interaction of Mb and TOM complex receptors (Tom20, Tom70) in isolated mitochondria. The assay showed a clear interaction of Mb with Tom20 and Tom70. A knockdown experiment using siRNA for TOM complex receptors (Tom20, Tom70) and TOM complex channel (Tom40) did not alter the amount of Mb expression in the mitochondrial fraction. These results suggested that Mb does not necessarily require the TOM complex for mitochondrial import of Mb. Although the physiological role of Mb interactions with TOM complex receptors remains unclear, further studies are needed to clarify how Mb enters the mitochondria independently of the TOM complex.
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Affiliation(s)
- Rikuhide Koma
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Tsubasa Shibaguchi
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yuhei Araiso
- Department of Clinical Laboratory Science, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Tatsuya Yamada
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yudai Nonaka
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Thomas Jue
- Department of Biochemistry and Molecular Medicine, University of California Davis, Davis, California, USA
| | - Kazumi Masuda
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, Japan
- Faculty of Human Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
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Koma R, Shibaguchi T, Jue T, Masuda K. Interaction Of Myoglobin With Hsp70 Chaperone: Implication In Mitochondrial Translocation Via Tom Complex. Med Sci Sports Exerc 2022. [DOI: 10.1249/01.mss.0000881684.42146.67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tabuchi A, Tanaka Y, Takagi R, Shirakawa H, Shibaguchi T, Sugiura T, Poole DC, Kano Y. Ryanodine receptors mediate high intracellular Ca 2+ and some myocyte damage following eccentric contractions in rat fast-twitch skeletal muscle. Am J Physiol Regul Integr Comp Physiol 2022; 322:R14-R27. [PMID: 34755549 DOI: 10.1152/ajpregu.00166.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 11/05/2021] [Indexed: 11/22/2022]
Abstract
Eccentric contractions (ECC) facilitate cytosolic calcium ion (Ca2+) release from the sarcoplasmic reticulum (SR) and Ca2+ influx from the extracellular space. Ca2+ is a vital signaling messenger that regulates multiple cellular processes via its spatial and temporal concentration ([Ca2+]i) dynamics. We hypothesized that 1) a specific pattern of spatial/temporal intramyocyte Ca2+ dynamics portends muscle damage following ECC and 2) these dynamics would be regulated by the ryanodine receptor (RyR). [Ca2+]i in the tibialis anterior muscles of anesthetized adult Wistar rats was measured by ratiometric (i.e., ratio, R, 340/380 nm excitation) in vivo bioimaging with Fura-2 pre-ECC and at 5 and 24 h post-ECC (5 × 40 contractions). Separate groups of rats received RyR inhibitor dantrolene (DAN; 10 mg/kg ip) immediately post-ECC (+DAN). Muscle damage was evaluated by histological analysis on hematoxylin-eosin stained muscle sections. Compared with control (CONT, no ECC), [Ca2+]i distribution was heterogeneous with increased percent total area of high [Ca2+]i sites (operationally defined as R ≥ 1.39, i.e., ≥1 SD of mean control) 5 h post-ECC (CONT, 14.0 ± 8.0; ECC5h: 52.0 ± 7.4%, P < 0.01). DAN substantially reduced the high [Ca2+]i area 5 h post-ECC (ECC5h + DAN: 6.4 ± 3.1%, P < 0.01) and myocyte damage (ECC24h, 63.2 ± 1.0%; ECC24h + DAN: 29.1 ± 2.2%, P < 0.01). Temporal and spatially amplified [Ca2+]i fluctuations occurred regardless of DAN (ECC vs. ECC + DAN, P > 0.05). These results suggest that the RyR-mediated local high [Ca2+]i itself is related to the magnitude of muscle damage, whereas the [Ca2+]i fluctuation is an RyR-independent phenomenon.
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Affiliation(s)
- Ayaka Tabuchi
- Department of Engineering Science, Bioscience and Technology Program, University of Electro-Communications, Chofu, Japan
- Research Fellowship for Young Scientists, Japan Society for the Promotion of Science, Tokyo, Japan
| | - Yoshinori Tanaka
- Department of Engineering Science, Bioscience and Technology Program, University of Electro-Communications, Chofu, Japan
- Center for Neuroscience and Biomedical Engineering, University of Electro-Communications, Chofu, Japan
| | - Ryo Takagi
- Department of Engineering Science, Bioscience and Technology Program, University of Electro-Communications, Chofu, Japan
- Research Fellowship for Young Scientists, Japan Society for the Promotion of Science, Tokyo, Japan
| | - Hideki Shirakawa
- Department of Engineering Science, Bioscience and Technology Program, University of Electro-Communications, Chofu, Japan
| | - Tsubasa Shibaguchi
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Japan
| | - Takao Sugiura
- Department of Exercise and Health Sciences, Faculty of Education, Yamaguchi University, Yamaguchi, Japan
| | - David C Poole
- Departments of Anatomy & Physiology and Kinesiology, Kansas State University, Manhattan, Kansas
| | - Yutaka Kano
- Department of Engineering Science, Bioscience and Technology Program, University of Electro-Communications, Chofu, Japan
- Center for Neuroscience and Biomedical Engineering, University of Electro-Communications, Chofu, Japan
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Shibaguchi T, Koma R, Hayakawa Y, Sugiura T, Masuda K. Effects Of Icing With Or Without Heat Stress On Skeletal Muscle Fibrosis Following Injury. Med Sci Sports Exerc 2021. [DOI: 10.1249/01.mss.0000760408.23428.a7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Koma R, Shibaguchi T, Oka T, Jue T, Masuda K. Submitochondrial Localization Of Myoglobin In Skeletal Muscle. Med Sci Sports Exerc 2021. [DOI: 10.1249/01.mss.0000760316.40497.fe] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Koma R, Shibaguchi T, Pérez López C, Oka T, Jue T, Takakura H, Masuda K. Localization of myoglobin in mitochondria: implication in regulation of mitochondrial respiration in rat skeletal muscle. Physiol Rep 2021; 9:e14769. [PMID: 33650803 PMCID: PMC7923563 DOI: 10.14814/phy2.14769] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 02/01/2021] [Indexed: 11/24/2022] Open
Abstract
Mitochondria play a principal role in metabolism, and mitochondrial respiration is an important process for producing adenosine triphosphate. Recently, we showed the possibility that the muscle-specific protein myoglobin (Mb) interacts with mitochondrial complex IV to augment the respiration capacity in skeletal muscles. However, the precise mechanism for the Mb-mediated upregulation remains under debate. The aim of this study was to ascertain whether Mb is truly integrated into the mitochondria of skeletal muscle and to investigate the submitochondrial localization. Isolated mitochondria from rat gastrocnemius muscle were subjected to different proteinase K (PK) concentrations to digest proteins interacting with the outer membrane. Western blotting analysis revealed that the PK digested translocase of outer mitochondrial membrane 20 (Tom20), and the immunoreactivity of Tom20 decreased with the amount of PK used. However, the immunoreactivity of Mb with PK treatment was better preserved, indicating that Mb is integrated into the mitochondria of skeletal muscle. The mitochondrial protease protection assay experiments suggested that Mb localizes within the mitochondria in the inner membrane from the intermembrane space side. These results strongly suggest that Mb inside muscle mitochondria could be implicated in the regulation of mitochondrial respiration via complex IV.
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Affiliation(s)
- Rikuhide Koma
- Graduate School of Human and Socio‐Environmental StudiesKanazawa UniversityIshikawaJapan
| | | | | | - Toshihiko Oka
- Department of Life ScienceRikkyo UniversityTokyoJapan
| | - Thomas Jue
- Department of Biochemistry and Molecular MedicineUniversity of California DavisDavisCAUSA
| | - Hisashi Takakura
- Faculty of Health and Sports ScienceDoshisha UniversityKyotoJapan
| | - Kazumi Masuda
- Graduate School of Human and Socio‐Environmental StudiesKanazawa UniversityIshikawaJapan
- Faculty of Human SciencesKanazawa UniversityIshikawaJapan
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Koma R, Shibaguchi T, López CP, Jue T, Masuda K. Effect Of Endurance Exercise On Localization Of Myoglobin In Mitochondria In Muscle. Med Sci Sports Exerc 2020. [DOI: 10.1249/01.mss.0000675144.53526.79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shibaguchi T, Pérez-López C, Sugiura T, Masuda K. Negative Impact of Icing Treatment on Qualitative Recovery of Injured Soleus Muscle in Rats. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000562950.96387.70] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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López CP, Shibaguchi T, Masuda K. Nutrients Stimulate Mitochondrial Biogenesis Via PGC-1α-targeting MiRNAs In C2C12 Myotubes. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000562001.30006.84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shibaguchi T, Hoshi M, Yoshihara T, Naito H, Goto K, Yoshioka T, Sugiura T. Impact of different temperature stimuli on the expression of myosin heavy chain isoforms during recovery from bupivacaine-induced muscle injury in rats. J Appl Physiol (1985) 2019; 127:178-189. [PMID: 31120809 DOI: 10.1152/japplphysiol.00930.2018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Limited information exists regarding the impact of different temperature stimuli on myosin heavy chain (MyHC) expression in skeletal muscle during recovery from injury. Therefore, this experiment investigated the impact of both cold and heat exposure on the MyHC isoform profile in the rat soleus during recovery from injury. Male Wistar rats were randomly divided into control, bupivacaine-injected (BPVC), BPVC with icing, and BPVC with heat stress groups. Muscle injury was induced by intramuscular injection of bupivacaine into soleus muscles of male Wistar rats. Icing treatment (0°C for 20 min) was performed immediately after the injury. Intermittent heat stress (42°C for 30 min on alternating days) was carried out during 2-14 days after bupivacaine injection. In response to injury, a transient increase in developmental, IId/x, and IIb MyHC isoforms, as well as various types of hybrid fibers, followed by the recovery of the MyHC profile toward the control level, was noted in the regeneration of the soleus. The restoration of the MyHC profile in the regenerating muscle at whole-muscle and individual myofiber levels was partially delayed by icing but facilitated by heat stress. In addition, the application of repeated heat stress promoted the recovery of soleus muscle mass toward the control level following injury. We conclude that compared with acute and immediate cold (icing) treatment, chronic and repeated heat stress may be a more appropriate treatment for the enhancement of both normalization of the MyHC profile and restoration of muscle mass following injury. NEW & NOTEWORTHY Cold exposure (icing), but not heat exposure, has been well accepted as a first-aid treatment for accidental and/or sports-related injuries. However, recent evidence suggests the negative impact of icing treatment on skeletal muscle regeneration following injury. Here, we demonstrated that acute/immediate icing treatment delayed the restoration of the myosin heavy chain (MyHC) profile, but intermittent hyperthermia, repeated for several days, facilitated the recovery of both muscle mass and the MyHC profile in the regeneration of skeletal muscle following injury.
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Affiliation(s)
- Tsubasa Shibaguchi
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa City, Ishikawa , Japan
| | - Mizuki Hoshi
- 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
| | - Katsumasa Goto
- Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi City, Aichi , Japan
| | | | - Takao Sugiura
- Department of Exercise and Health Sciences, Faculty of Education, Yamaguchi University, Yamaguchi City, Yamaguchi , Japan
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Yoshihara T, Sugiura T, Miyaji N, Yamamoto Y, Shibaguchi T, Kakigi R, Naito H, Goto K, Ohmori D, Yoshioka T. Effect of a combination of astaxanthin supplementation, heat stress, and intermittent reloading on satellite cells during disuse muscle atrophy. J Zhejiang Univ Sci B 2019; 19:844-852. [PMID: 30387334 DOI: 10.1631/jzus.b1800076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We examined the effect of a combination of astaxanthin (AX) supplementation, repeated heat stress, and intermittent reloading (IR) on satellite cells in unloaded rat soleus muscles. Forty-nine male Wistar rats (8-week-old) were divided into control, hind-limb unweighting (HU), IR during HU, IR with AX supplementation, IR with repeated heat stress (41.0-41.5 °C for 30 min), and IR with AX supplementation and repeated heat stress groups. After the experimental period, the antigravitational soleus muscle was analyzed using an immunohistochemical technique. Our results revealed that the combination of dietary AX supplementation and heat stress resulted in protection against disuse muscle atrophy in the soleus muscle. This protective effect may be partially due to a higher satellite cell number in the atrophied soleus muscle in the IR/AX/heat stress group compared with the numbers found in the other groups. We concluded that the combination treatment with dietary AX supplementation and repeated heat stress attenuates soleus muscle atrophy, in part by increasing the number of satellite cells.
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Affiliation(s)
- Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba 270-1695, Japan
| | - Takao Sugiura
- Faculty of Education, Yamaguchi University, Yamaguchi, Yamaguchi 753-8513, Japan
| | | | - Yuki Yamamoto
- Institute of Health and Sports Science, Kurume University, Kurume, Fukuoka 839-8502, Japan
| | - Tsubasa Shibaguchi
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - Ryo Kakigi
- Faculty of Medicine, Juntendo University, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba 270-1695, Japan
| | - Katsumasa Goto
- Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi, Aichi 440-8511, Japan
| | - Daijiro Ohmori
- Department of Chemistry, School of Medicine, Juntendo University, Inzai, Chiba 270-1695, Japan
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Masuda K, Shibaguchi T, Yamada T, Okumura K, López CP, Yamashita K, Jue T. Localization Of Myoglobin In Mitochondria. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000535733.23084.bd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shibaguchi T, Tsuji A, Yamazaki Y, Matsui K, Masuda K. Grain Fermented Beverage Treatment Induces Mitochondrial Biogenesis in C2C12 Myotubes. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000538381.86048.78] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shibaguchi T, Ishizawa R, Tsuji A, Yamazaki Y, Matsui K, Masuda K. Effects of Fermented Drink Intake on Post-exercise Glycogen Restoration in Rat Skeletal Muscle and Liver. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000519558.74484.f8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shibaguchi T, Ishizawa R, Tsuji A, Yamazaki Y, Matsui K, Masuda K. Fermented Grain Beverage Supplementation Following Exercise Promotes Glycogen Supercompensation in Rodent Skeletal Muscle and Liver. IJOST 2017. [DOI: 10.17509/ijost.v2i1.5985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The purpose of this study was to investigate the effects of post-endurance exercise fermented grain beverage (FGB) supplementation on glycogen reaccumulation in rat skeletal muscle and liver. Twelve-hour fasted male Wistar rats, 10-week-old, performed five 30-min bouts of swimming separated by 5-min rest periods in order to deplete tissue glycogen storage. The rats were orally administrated either water, glucose, or FGB in 30, 60, 90, and 120 min after the exercise. Immediately and/or 240 min after the exercise, soleus and gastrocnemius muscles and liver were removed and analyzed. A large glycogen reaccumulation was observed in skeletal muscles and liver at 240 min after the exercise when either glucose or FGB were ingested. This response tended to be greater in FGB-treated than in glucose-treated animals, particularly in liver and gastrocnemius muscle. These results suggest that post-endurance exercise FGB supplementation enhances glycogen restoration in both skeletal muscle and liver.
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Shibaguchi T, Yamaguchi Y, Miyaji N, Yoshihara T, Naito H, Goto K, Ohmori D, Yoshioka T, Sugiura T. Astaxanthin intake attenuates muscle atrophy caused by immobilization in rats. Physiol Rep 2017; 4:4/15/e12885. [PMID: 27482075 PMCID: PMC4985550 DOI: 10.14814/phy2.12885] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 07/15/2016] [Indexed: 12/13/2022] Open
Abstract
Astaxanthin is a carotenoid pigment and has been shown to be an effective inhibitor of oxidative damage. We tested the hypothesis that astaxanthin intake would attenuate immobilization‐induced muscle atrophy in rats. Male Wistar rats (14‐week old) were fed for 24 days with either astaxanthin or placebo diet. After 14 days of each experimental diet intake, the hindlimb muscles of one leg were immobilized in plantar flexion position using a plaster cast. Following 10 days of immobilization, both the atrophic and the contralateral plantaris muscles were removed and analyzed to determine the level of muscle atrophy along with measurement of the protein levels of CuZn‐superoxide dismutase (CuZn‐SOD) and selected proteases. Compared with placebo diet animals, the degree of muscle atrophy in response to immobilization was significantly reduced in astaxanthin diet animals. Further, astaxanthin supplementation significantly prevented the immobilization‐induced increase in the expression of CuZn‐SOD, cathepsin L, calpain, and ubiquitin in the atrophied muscle. These results support the postulate that dietary astaxanthin intake attenuates the rate of disuse muscle atrophy by inhibiting oxidative stress and proteolysis via three major proteolytic pathways.
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Affiliation(s)
- Tsubasa Shibaguchi
- Organization of Frontier Science and Innovation, Kanazawa University, Kanazawa City, Ishikawa, Japan
| | - Yusuke Yamaguchi
- 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
| | - Katsumasa Goto
- Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi City, Aichi, Japan
| | - Daijiro Ohmori
- Department of Chemistry, School of Medicine, Juntendo University, Inzai City, Chiba, Japan
| | | | - Takao Sugiura
- Department of Exercise and Health Sciences, Faculty of Education, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
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Yoshihara T, Yamamoto Y, Shibaguchi T, Miyaji N, Kakigi R, Naito H, Goto K, Ohmori D, Yoshioka T, Sugiura T. Dietary astaxanthin supplementation attenuates disuse-induced muscle atrophy and myonuclear apoptosis in the rat soleus muscle. J Physiol Sci 2017; 67:181-190. [PMID: 27117878 PMCID: PMC10717173 DOI: 10.1007/s12576-016-0453-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 04/15/2016] [Indexed: 12/01/2022]
Abstract
Extended periods of skeletal muscle disuse results in muscle atrophy and weakness. Currently, no therapeutic treatment is available for the prevention of this problem. Nonetheless, growing evidence suggests that prevention of disuse-induced oxidative stress in inactive muscle fibers can delay inactivity-induced muscle wasting. Therefore, this study tested the hypothesis that dietary supplementation with the antioxidant astaxanthin would protect against disuse muscle atrophy, in part, by prevention of myonuclear apoptosis. Wistar rats (8 weeks old) were divided into control (CT, n = 9), hindlimb unloading (HU, n = 9), and hindlimb unloading with astaxanthin (HU + AX, n = 9) groups. Following 2 weeks of dietary supplementation, rats in the HU and HU + AX groups were exposed to unloading for 7 days. Seven-day unloading resulted in reduced soleus muscle weight and myofiber cross-sectional area (CSA) by ~30 and ~47 %, respectively. Nonetheless, relative muscle weights and CSA of the soleus muscle in the HU + AX group were significantly greater than those of the HU group. Moreover, astaxanthin prevented disuse-induced increase in the number of terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL)-positive nuclei. We conclude that astaxanthin supplementation prior to and during hindlimb unloading attenuates soleus muscle atrophy, in part, by suppressing myonuclear apoptosis.
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Affiliation(s)
- Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan.
| | - Yuki Yamamoto
- Sports Research and Development Core, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - Tsubasa Shibaguchi
- Graduate School of Frontier Biosciences, Osaka University, 1-17 Machikaneyama-cho, Toyonaka, Osaka, Japan
| | - Nobuyuki Miyaji
- Toyo Koso Kagaku Co. Ltd., 4-4-27 Horie, Urayasu, Chiba, Japan
| | - Ryo Kakigi
- Faculty of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan
| | - Katsumasa Goto
- Graduate School of Health Sciences, Toyohashi SOZO University, 20-1 Matsushita, Toyohashi, Aichi, Japan
| | - Daijiro Ohmori
- Department of Chemistry, School of Medicine, Juntendo University, 1-1 Hrakagakuendai, Inzai, Chiba, Japan
| | | | - Takao Sugiura
- Faculty of Education, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Japan
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Yoshihara T, Sugiura T, Yamamoto Y, Shibaguchi T, Kakigi R, Naito H. The response of apoptotic and proteolytic systems to repeated heat stress in atrophied rat skeletal muscle. Physiol Rep 2015; 3:3/10/e12597. [PMID: 26508739 PMCID: PMC4632963 DOI: 10.14814/phy2.12597] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
We examined the effect of repeated heat stress on muscle atrophy, and apoptotic and proteolytic regulation in unloaded rat slow- and fast-type skeletal muscles. Forty male Wistar rats (11 week-old) were divided into control (CT), hindlimb unweighting (HU), intermittent weight-bearing during HU (HU + IWB), and intermittent weight-bearing with heat stress during HU (41–41.5°C for 30 min; HU + IWB + HS) groups. The HU + IWB + HS and HU + IWB groups were released from unloading for 1 h every second day, during which the HU + IWB + HS group underwent the heating. Our results revealed that repeated bouts of heat stress resulted in protection against disuse muscle atrophy in both soleus and plantaris muscles. This heat stress–induced protection against disuse-induced muscular atrophy may be partially due to reduced apoptotic activation in both muscles, and decreased ubiquitination in only the soleus muscle. We concluded that repeated heat stress attenuated skeletal muscle atrophy via suppressing apoptosis but the response to proteolytic systems depend on the muscle phenotype.
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Affiliation(s)
- Toshinori Yoshihara
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
| | - Takao Sugiura
- Faculty of Education, Yamaguchi University, Yoshida, Yamaguchi, Japan
| | - Yuki Yamamoto
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Tsubasa Shibaguchi
- Graduate School of Frontier Biosciences, Osaka University, Toyonaka, Osaka, Japan
| | - Ryo Kakigi
- Faculty of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, Japan
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22
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Nakai N, Fujita R, Kawano F, Takahashi K, Ohira T, Shibaguchi T, Nakata K, Ohira Y. Retardation of C2C12 myoblast cell proliferation by exposure to low-temperature atmospheric plasma. J Physiol Sci 2014; 64:365-75. [PMID: 25034108 PMCID: PMC10717780 DOI: 10.1007/s12576-014-0328-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 06/27/2014] [Indexed: 10/25/2022]
Abstract
As the first step in evaluating the possibility of low-temperature atmospheric plasma for clinical applications in the treatment of rhabdomyosarcoma (RMS), we determined the effects of plasma exposure on C2C12 myoblasts. The low-temperature atmospheric plasma was generated through an electrical discharge in argon gas. One minute of plasma exposure every 24 h inhibited the cell proliferation, whereas myoblast differentiation was not affected. Plasma exposure increased the phosphorylation of ERK and JNK at 30 min after the exposure, but the phosphorylation of both was decreased to less than control levels at 1 and 4 h after the exposure. Plasma exposure increased the percentage of cells in the G2/M phase at 8 h after the exposure. In conclusion, plasma exposure retarded the proliferation of C2C12 myoblasts by G2/M arrest. Therefore, plasma exposure can be a possible treatment for the anti-proliferative effects of malignant tumors, such as RMS, without affecting differentiated skeletal muscle cells.
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Affiliation(s)
- Naoya Nakai
- Department of Health and Sports Sciences, Graduate School of Medicine, Osaka University, 1-17 Machikaneyama-cho, Toyonaka, Osaka, 560-0043, Japan,
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Fujita R, Kawano F, Ohira T, Nakai N, Shibaguchi T, Nishimoto N, Ohira Y. Anti-interleukin-6 receptor antibody (MR16-1) promotes muscle regeneration via modulation of gene expressions in infiltrated macrophages. Biochim Biophys Acta Gen Subj 2014; 1840:3170-80. [PMID: 24440156 DOI: 10.1016/j.bbagen.2014.01.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 01/06/2014] [Accepted: 01/08/2014] [Indexed: 12/30/2022]
Abstract
BACKGROUND Although rat anti-mouse IL-6 receptor (IL-6R) antibody (MR16-1) has been reported to effectively ameliorate various tissue damages, its effect on skeletal muscle regeneration has not been determined. Moreover, the localization, persistence and duration of action of this reagent in damaged tissues after systemic administration have not been assessed. METHODS The MR16-1 was administered i.p. immediately after cardiotoxin (CTX)-induced muscle damage on mice. RESULTS MR16-1 administered i.p. was observed only to the damaged muscle. This delivered MR16-1 was dramatically decreased from 3 to 7days post-injury concomitantly with a reduction of IL-6R expression. This reduction of the MR16-1 level in the damaged muscle was not rescued by additional administration of MR16-1, suggesting the short half-life of MR16-1 was not the factor for the remaining levels. In addition, a significant inhibitory effect of MR16-1 on phosphorylation of the signal transducer and activator of transcription 3 was observed in the macrophage-enriched area of damaged muscle 3days after injury. Finally, the acceleration of muscle regeneration observed at day 7 post-injury following MR16-1 treatment was associated with reduced expression of fibrosis-related genes, such as interleukin-10 and arginase, in the infiltrated macrophages. CONCLUSIONS These results suggest that MR16-1 which was found primarily localized in infiltrated macrophages in the damaged muscle might facilitate muscle regeneration via immune modulation. GENERAL SIGNIFICANCE These findings are deemed to provide further insight into the understanding not only of MR16-1 treatment on muscle regeneration, but also of the other anti-cytokine treatment on the cytokine-related disease.
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Affiliation(s)
- Ryo Fujita
- Graduate School of Medicine, Osaka University, Japan
| | | | - Takashi Ohira
- Graduate School of Frontier Bioscience, Osaka University, Japan
| | - Naoya Nakai
- Graduate School of Medicine, Osaka University, Japan
| | | | | | - Yoshinobu Ohira
- Graduate School of Medicine, Osaka University, Japan; Graduate School of Frontier Bioscience, Osaka University, Japan.
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Ohira T, Ohira T, Kawano F, Shibaguchi T, Okabe H, Goto K, Ogita F, Sudoh M, Roy RR, Edgerton VR, Cancedda R, Ohira Y. Effects of gravitational loading levels on protein expression related to metabolic and/or morphologic properties of mouse neck muscles. Physiol Rep 2014; 2:e00183. [PMID: 24744868 PMCID: PMC3967672 DOI: 10.1002/phy2.183] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Revised: 11/14/2013] [Accepted: 11/18/2013] [Indexed: 11/13/2022] Open
Abstract
The effects of 3 months of spaceflight (SF), hindlimb suspension, or exposure to 2G on the characteristics of neck muscle in mice were studied. Three 8‐week‐old male C57BL/10J wild‐type mice were exposed to microgravity on the International Space Station in mouse drawer system (MDS) project, although only one mouse returned to the Earth alive. Housing of mice in a small MDS cage (11.6 × 9.8‐cm and 8.4‐cm height) and/or in a regular vivarium cage was also performed as the ground controls. Furthermore, ground‐based hindlimb suspension and 2G exposure by using animal centrifuge (n = 5 each group) were performed. SF‐related shift of fiber phenotype from type I to II and atrophy of type I fibers were noted. Shift of fiber phenotype was related to downregulation of mitochondrial proteins and upregulation of glycolytic proteins, suggesting a shift from oxidative to glycolytic metabolism. The responses of proteins related to calcium handling, myofibrillar structure, and heat stress were also closely related to the shift of muscular properties toward fast‐twitch type. Surprisingly, responses of proteins to 2G exposure and hindlimb suspension were similar to SF, although the shift of fiber types and atrophy were not statistically significant. These phenomena may be related to the behavior of mice that the relaxed posture without lifting their head up was maintained after about 2 weeks. It was suggested that inhibition of normal muscular activities associated with gravitational unloading causes significant changes in the protein expression related to metabolic and/or morphological properties in mouse neck muscle. Inhibition of gravitational loading in space and on the Earth for 3 months caused similar responses of protein expression in mouse neck muscle. Downregulation of mitochondrial proteins and upregulation of glycolytic proteins were induced, suggesting a shift from oxidative to glycolytic metabolism. Furthermore, the responses of proteins, involved in calcium handling, myofibrillar structure, and heat stress, related to the shift of muscular properties toward fast‐twitch type were also noted. It was suggested that inhibition of normal muscular activities associated with gravitational unloading caused significant changes in the protein expression related to metabolic and/or morphological properties in mouse neck muscle.
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Affiliation(s)
- Tomotaka Ohira
- Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi City, 440‐8511, Aichi, Japan
| | - Takashi Ohira
- Space Biomedical Research Office, Japan Aerospace Exploration Agency, Tsukuba City, 305‐8505, Ibaraki, Japan
| | - Fuminori Kawano
- Graduate School of Medicine, Osaka University, Toyonaka City, 560‐0043, Osaka, Japan
| | - Tsubasa Shibaguchi
- Graduate School of Frontier Biosciences, Osaka University, Toyonaka City, Osaka560‐0043, Japan
| | - Hirooki Okabe
- Faculty of Letters, Kokushikan University, Setagaya‐ku, 154‐0017, Tokyo, Japan
| | - Katsumasa Goto
- Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi City, 440‐8511, Aichi, Japan
| | - Futoshi Ogita
- Department of Sports and Life Science, National Institute of Fitness and Sports, Kanoya City, 891‐2393, Kagoshima, Japan
| | - Masamichi Sudoh
- Division of Aerospace Medicine, Department of Cell Physiology, Jikei University School of Medicine, Minato‐ku, 105‐8461, Tokyo, Japan
| | - Roland Richard Roy
- Department of Integrative Biology and Physiology and Brain Research Institute, University of California, Los Angeles, 90095, California
| | - Victor Reggie Edgerton
- Department of Integrative Biology and Physiology and Brain Research Institute, University of California, Los Angeles, 90095, California
| | - Ranieri Cancedda
- Universita' degli Studi di Genova & Istituto Nazionale per la Ricerca sul Cancro, Genova City, Italy
| | - Yoshinobu Ohira
- Research Center for Adipocyte and Muscle Science, Doshisha University, Kyotanabe City, 610‐0394, Kyoto, Japan
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Masini MA, Albi E, Barmo C, Bonfiglio T, Bruni L, Canesi L, Cataldi S, Curcio F, D'Amora M, Ferri I, Goto K, Kawano F, Lazzarini R, Loreti E, Nakai N, Ohira T, Ohira Y, Palmero S, Prato P, Ricci F, Scarabelli L, Shibaguchi T, Spelat R, Strollo F, Ambesi-Impiombato FS. The impact of long-term exposure to space environment on adult mammalian organisms: a study on mouse thyroid and testis. PLoS One 2012; 7:e35418. [PMID: 22558148 PMCID: PMC3338839 DOI: 10.1371/journal.pone.0035418] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 03/15/2012] [Indexed: 12/30/2022] Open
Abstract
Hormonal changes in humans during spaceflight have been demonstrated but the underlying mechanisms are still unknown. To clarify this point thyroid and testis/epididymis, both regulated by anterior pituitary gland, have been analyzed on long-term space-exposed male C57BL/10 mice, either wild type or pleiotrophin transgenic, overexpressing osteoblast stimulating factor-1. Glands were submitted to morphological and functional analysis.In thyroids, volumetric ratios between thyrocytes and colloid were measured. cAMP production in 10(-7)M and 10(-8)M thyrotropin-treated samples was studied. Thyrotropin receptor and caveolin-1 were quantitized by immunoblotting and localized by immunofluorescence. In space-exposed animals, both basal and thyrotropin-stimulated cAMP production were always higher. Also, the structure of thyroid follicles appeared more organized, while thyrotropin receptor and caveolin-1 were overexpressed. Unlike the control samples, in the space samples thyrotropin receptor and caveolin-1 were both observed at the intracellular junctions, suggesting their interaction in specific cell membrane microdomains.In testes, immunofluorescent reaction for 3β- steroid dehydrogenase was performed and the relative expressions of hormone receptors and interleukin-1β were quantified by RT-PCR. Epididymal sperm number was counted. In space-exposed animals, the presence of 3β and 17β steroid dehydrogenase was reduced. Also, the expression of androgen and follicle stimulating hormone receptors increased while lutenizing hormone receptor levels were not affected. The interleukin 1 β expression was upregulated. The tubular architecture was altered and the sperm cell number was significantly reduced in spaceflight mouse epididymis (approx. -90% vs. laboratory and ground controls), indicating that the space environment may lead to degenerative changes in seminiferous tubules.Space-induced changes of structure and function of thyroid and testis/epididymis could be responsible for variations of hormone levels in human during space missions. More research, hopefully a reflight of MDS, would be needed to establish whether the space environment acts directly on the peripheral glands or induces changes in the hypotalamus-pituitary-glandular axis.
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Affiliation(s)
| | - Elisabetta Albi
- Department of Clinical and Experimental Medicine, University of Perugia, Perugia, Italy
| | | | | | - Lara Bruni
- DIPTERIS, University of Genoa, Genova, Italy
| | | | - Samuela Cataldi
- Department of Clinical and Experimental Medicine, University of Perugia, Perugia, Italy
| | - Francesco Curcio
- Department of Clinical and Biological Sciences, University of Udine, Udine, Italy
| | | | - Ivana Ferri
- Institute of Pathologic Anatomy and Histology, University of Perugia, Perugia, Italy
| | - Katsumasa Goto
- School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
| | | | - Remo Lazzarini
- Department of Clinical and Experimental Medicine, University of Perugia, Perugia, Italy
| | - Elisabetta Loreti
- Institute of Pathologic Anatomy and Histology, University of Perugia, Perugia, Italy
| | - Naoya Nakai
- Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Takashi Ohira
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Yoshinobu Ohira
- Graduate School of Medicine, Osaka University, Osaka, Japan
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | | | - Paola Prato
- DIPTERIS, University of Genoa, Genova, Italy
| | | | | | | | - Renza Spelat
- Department of Clinical and Biological Sciences, University of Udine, Udine, Italy
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Kikuchi K, Takeuchi S, Tanaka E, Shibaguchi T, Tanne K. Association between condylar position, joint morphology and craniofacial morphology in orthodontic patients without temporomandibular joint disorders. J Oral Rehabil 2004; 30:1070-5. [PMID: 14641670 DOI: 10.1046/j.1365-2842.2003.01194.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The present study investigated condylar position and joint morphology in adolescent patients and elucidated the possible association between the joint structure and condylar position, and craniofacial morphology. Sixty-five adolescent patients were selected as subjects and their tomograms and lateral cephalograms were analysed. No significant differences in joint spaces were found between the right and left temporomandibular joints. Both the condyles in this population were located slight anteriorly in the glenoid fossa. With respect to the association between condylar position, joint morphology and craniofacial morphology, the ramus plane angle also exhibited significant negative correlations with posterior, lateral and medial joint spaces. Furthermore, there was a significant negative correlation between the gonial angle and the anterior joint space. These findings imply that the condyle was likely to show more posterior position in the glenoid fossa when the mandible exhibited clockwise rotation. In conclusion, the condyle in the adolescent subjects showed a symmetrical anterior position relative to the glenoid fossa. In addition, the joint spaces and it ratios were significantly related to the craniofacial morphology associated with vertical dimension. It is suggested that the condylar position may be affected by craniofacial growth pattern.
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Affiliation(s)
- K Kikuchi
- Kikuchi Orthodontic Office, Mie, Japan
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Tanaka E, Shibaguchi T, Tanaka M, Tanne K. Viscoelastic properties of the human temporomandibular joint disc in patients with internal derangement. J Oral Maxillofac Surg 2000; 58:997-1002. [PMID: 10981980 DOI: 10.1053/joms.2000.8743] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE This study investigated the viscoelastic properties of human temporomandibular joint (TMJ) discs in patients with severe internal derangement (ID). PATIENTS AND METHODS TMJ discs obtained from 5 patients with severe TMJ internal derangement were analyzed. Normal discs derived from 2 fresh cadavers and 4 patients without ID served as the controls. The viscoelastic responses of the discs to tensile forces were evaluated by means of stress-strain analyses. RESULTS The discs in both groups exhibited a nonlinear stress-strain relationship that was represented by a power function of the strain. However, after stress relaxation, the ID discs were likely to exhibit a linear stress-strain relationship. The instantaneous elastic moduli were almost the same in both discs, but the relaxed elastic modulus of the ID discs was significantly greater than that of the controls in lower strain range of less than 2%. CONCLUSIONS ID discs are more rigid than normal discs. These findings suggest that the changes in viscoelastic property of the discs in patients with ID are somewhat different from those that occur with aging.
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Affiliation(s)
- E Tanaka
- Department of Orthodontics, Hiroshima University Faculty of Dentistry, Japan.
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Tanne K, Matsubara S, Shibaguchi T, Sakuda M. Wire friction from ceramic brackets during simulated canine retraction. Angle Orthod 1991; 61:285-90; discussion 291-2. [PMID: 1763839 DOI: 10.1043/0003-3219(1991)061<0285:wffcbd>2.0.co;2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The present study was designed to investigate the nature of friction between orthodontic wire and various ceramic brackets. The amount of tooth movement with metal and ceramic brackets was measured, and the wire surfaces were examined microscopically immediately after artificial tooth movement. The amount of tooth movement produced by the ceramic brackets was significantly less than that produced by metal bracket. The wire surfaces were scratched more obviously by ceramic brackets than by metal bracket. Slot surfaces and edges of the ceramic brackets were substantially more porous and rougher than those surfaces of the metal bracket. These material differences between metal and ceramic brackets significantly affect the efficiency of orthodontic tooth movement.
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Affiliation(s)
- K Tanne
- Department of Orthodontics, Osaka University Faculty of Dentistry, Japan
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