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Kim JH, Lee WD, Kim MY, Lee LK, Park BS, Yang SM, Noh JW, Shin YS, Lee JU, Kwak TY, Lee TH, Park J, Kim B, Kim J. Differences in strength-duration curves of electrical diagnosis by physiotherapists between DJ-1 homozygous knockout and wild-type mice: a randomized controlled pilot trial. J Phys Ther Sci 2016; 28:1595-8. [PMID: 27313379 PMCID: PMC4905918 DOI: 10.1589/jpts.28.1595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 02/03/2016] [Indexed: 12/01/2022] Open
Abstract
[Purpose] Strength-duration (SD) curves are used in electrical diagnosis by
physiotherapists to confirm muscle degeneration. However, the usefulness of SD curves in
comparing muscle degeneration in DJ-1 homozygous knockout (DJ-1−/−) and
wild-type mice (DJ-1+/+) is not yet fully understood. The electrical properties
of the gastrocnemius muscles of DJ-1−/− and DJ-1+/+ mice were
compared in the current study. [Subjects and Methods] The electrode of an electrical
stimulator was applied to the gastrocnemius muscle to measure the rheobase until the
response of contractive muscle to electrical stimulation became visible in mice. [Results]
The rheobase of DJ-1−/− mice showed a significant increase in a time-dependent
manner, compared to that of DJ-1+/+ mice. [Conclusion] These results
demonstrate that the DJ-1 protein may be implicated in the regulation of neuromuscular
activity of gastrocnemius muscles of mice.
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Affiliation(s)
- Ju-Hyun Kim
- Department of Physical Therapy, College of Health Welfare, Wonkwang Health Science University, Republic of Korea
| | - Won-Deok Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Mee-Young Kim
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Lim-Kyu Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea; Commercializations Promotion Agency for R&D Outcomes, Republic of Korea
| | - Byoung-Sun Park
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Seung-Min Yang
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Ji-Woong Noh
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Yong-Sub Shin
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Jeong-Uk Lee
- Department of Physical Therapy, College of Health Science, Honam University, Republic of Korea
| | - Taek-Yong Kwak
- Department of Taekwondo Instructor Education, College of Martial Arts, Yongin University, Republic of Korea
| | - Tae-Hyun Lee
- Department of Combative Martial Arts Training, College of Martial Arts, Yongin University, Republic of Korea
| | - Jaehong Park
- Department of Social Welfare, College of Public Health and Welfare, Yongin University, Republic of Korea
| | - Bokyung Kim
- Department of Medicine, Institute of Functional Genomics, School of Medicine, Konkuk University, Republic of Korea
| | - Junghwan Kim
- Department of Physical Therapy, College of Public Health and Welfare, Yongin University, Republic of Korea
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DJ-1 protects against undernutrition-induced atrophy through inhibition of the MAPK-ubiquitin ligase pathway in myoblasts. Life Sci 2015; 143:50-7. [PMID: 26408915 DOI: 10.1016/j.lfs.2015.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 08/01/2015] [Accepted: 09/21/2015] [Indexed: 01/09/2023]
Abstract
AIMS The purpose of this study is to explore whether antioxidant DJ-1 protein affects the atrophy of skeletal muscle cell induced by undernutrition. MAIN METHODS To determine cell atrophic responses, L6 cell line and skeletal primary cells from mouse hind limbs were cultivated under condition of FBS-free and low glucose. Changes of protein expression were analyzed using Western blot. Overexpression and knockdown of DJ-1 was performed in cells to assess its influence on cell atrophic responses. KEY FINDINGS Undernutrition decreased cell size and increased the abundance of oxidized form and total form of DJ-1 protein in L6 myoblasts. The undernourished cells revealed an elevation in the expression of muscle-specific RING finger-1 (MuRF-1) and atrogin-1, and in the phosphorylations of p38 mitogen-activated protein kinase (MAPK) and stress-activated protein kinase/c-Jun N-terminal kinase compared with control groups. Moreover, DJ-1-knockout mice showed a decrease in cell size and an enhancement in the expression of MuRF-1 and atrogin-1, as well as in the phosphorylation of MAPKs in gastrocnemius muscles; these changes were also observed in L6 cells transfected with siRNA of DJ-1. On the other hand, L6 cells overexpressing full-length DJ-1 did not exhibit the alterations in cell size and ubiquitin ligases seen after undernourished states of control cells. Myotubes differentiated from L6 cells also showed elevated expression of MuRF-1 and atrogin-1 in response to undernutrition. SIGNIFICANCE These results suggest that DJ-1 protein may contribute to undernutrition-induced atrophy via MAPKs/ubiquitin ligase pathway in skeletal muscle cells.
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Kim MY, Lee JU, Kim JH, Lee LK, Park BS, Yang SM, Jeon HJ, Lee WD, Noh JW, Kwak TY, Jang SH, Lee TH, Kim JY, Kim B, Kim J. Phosphorylation of Heat Shock Protein 27 is Increased by Cast Immobilization and by Serum-free Starvation in Skeletal Muscles. J Phys Ther Sci 2014; 26:1975-7. [PMID: 25540511 PMCID: PMC4273071 DOI: 10.1589/jpts.26.1975] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 06/23/2014] [Indexed: 02/01/2023] Open
Abstract
[Purpose] Cast immobilization- and cell starvation-induced loss of muscle mass are closely associated with a dramatic reduction in the structural muscle proteins. Heat shock proteins are molecular chaperones that are constitutively expressed in several eukaryotic cells and have been shown to protect against various stressors. However, the changes in the phosphorylation of atrophy-related heat shock protein 27 (HSP27) are still poorly understood in skeletal muscles. In this study, we examine whether or not phosphorylation of HSP27 is changed in the skeletal muscles after cast immobilization and serum-free starvation with low glucose in a time-dependent manner. [Methods] We undertook a HSP27 expression and high-resolution differential proteomic analysis in skeletal muscles. Furthermore, we used western blotting to examine protein expression and phosphorylation of HSP27 in atrophied gastrocnemius muscle strips and L6 myoblasts. [Results] Cast immobilization and starvation significantly upregulated the phosphorylation of HSP27 in a time-dependent manner, respectively. [Conclusion] Our results suggest that cast immobilization- and serum-free starvation-induced atrophy may be in part related to changes in the phosphorylation of HSP27 in rat skeletal muscles.
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Affiliation(s)
- Mee-Young Kim
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Jeong-Uk Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Ju-Hyun Kim
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Lim-Kyu Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Byoung-Sun Park
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Seung-Min Yang
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Hye-Joo Jeon
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Won-Deok Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Ji-Woong Noh
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Taek-Yong Kwak
- Department of Taekwondo Instructor Education, College of Martial Arts, Yongin University, Republic of Korea
| | - Sung-Ho Jang
- Department of Judo, College of Martial Arts, Yongin University, Republic of Korea
| | - Tae-Hyun Lee
- Department of Combative Martial Arts Training, College of Martial Arts, Yongin University, Republic of Korea
| | - Ju-Young Kim
- Department of Combative Martial Arts Training, College of Martial Arts, Yongin University, Republic of Korea
| | - Bokyung Kim
- Institute of Functional Genomics, Department of Physiology, School of Medicine, Konkuk University, Republic of Korea
| | - Junghwan Kim
- Department of Physical Therapy, College of Public Health and Welfare, Yongin University: Yongin 449-714, Republic of Korea
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Kim MY, Kim JH, Lee JU, Lee LK, Yang SM, Jeon HJ, Lee WD, Noh JW, Lee TH, Kwak TY, Kim B, Kim J. Decrease of Both Cofilin and LIM Kinase Phosphorylation in the Skeletal Muscles of Immobilization-induced Atrophy Rats. J Phys Ther Sci 2014; 26:355-7. [PMID: 24711688 PMCID: PMC3977028 DOI: 10.1589/jpts.26.355] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 09/22/2013] [Indexed: 12/02/2022] Open
Abstract
[Purpose] Immobilization-induced atrophy is a general phenomenon caused by prolonged
muscle disuse associated with orthopaedic conditions. However, changes in the
phosphorylation of atrophy-related cofilin and LIM kinases are still poorly understood. In
this study, we examined whether or not phosphorylation of cofilin and LIM kinases is
altered in the skeletal muscles of rats after 3, 7, 14, and 21 days of cast
immobilization. [Methods] We used two-dimensional gel electrophoresis, mass spectrometry,
and western blotting to examine protein expression and phosphorylation in atrophied rat
gastrocnemius muscles. [Results] The expression of the cofilin was detected in
gastrocnemius muscle strips using proteomic analysis. Cast immobilization after 3, 7, 14,
and 21 days significantly diminished the phosphorylation of cofilin and LIM kinases.
[Conclusion] The present results suggest that cast immobilization-induced atrophy may be
in part related to changes in the phosphorylation of cofilin and LIM kinases in rat
skeletal muscles.
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Affiliation(s)
- Mee-Young Kim
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Ju-Hyun Kim
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Jeong-Uk Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Lim-Kyu Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Seung-Min Yang
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Hye-Joo Jeon
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Won-Deok Lee
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Ji-Woong Noh
- Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University, Republic of Korea
| | - Tae-Hyun Lee
- Department of Combative Martial Arts Training, College of Martial Arts, Yongin University, Republic of Korea
| | - Taek-Yong Kwak
- Taekwondo Instructor Education, College of Martial Arts, Yongin University, Republic of Korea
| | - Bokyung Kim
- Institute of Functional Genomics, Department of Physiology, School of Medicine, Konkuk University, Republic of Korea
| | - Junghwan Kim
- Department of Physical Therapy, College of Public Health and Welfare, Yongin University, Republic of Korea
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