1
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Yamada M, Okutsu M. Interleukin-1β triggers muscle-derived extracellular superoxide dismutase expression and protects muscles from doxorubicin-induced atrophy. J Physiol 2023; 601:4699-4721. [PMID: 37815420 DOI: 10.1113/jp285174] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 09/27/2023] [Indexed: 10/11/2023] Open
Abstract
Doxorubicin, a conventional chemotherapeutic agent prescribed for cancer, causes skeletal muscle atrophy and adversely affects mobility and strength. Given that doxorubicin-induced muscle atrophy is attributable primarily to oxidative stress, its effects could be mitigated by antioxidant-focused therapies; however, these protective therapeutic targets remain ambiguous. The aim of this study was to demonstrate that doxorubicin triggers severe muscle atrophy via upregulation of oxidative stress (4-hydroxynonenal and malondialdehyde) and atrogenes (atrogin-1/MAFbx and muscle RING finger-1) in association with decreased expression of the antioxidant enzyme extracellular superoxide dismutase (EcSOD), in cultured C2C12 myotubes and mouse skeletal muscle. Supplementation with EcSOD recombinant protein elevated EcSOD levels on the cellular membrane of cultured myotubes, consequently inhibiting doxorubicin-induced oxidative stress and myotube atrophy. Furthermore, doxorubicin treatment reduced interleukin-1β (IL-1β) mRNA expression in cultured myotubes and skeletal muscle, whereas transient IL-1β treatment increased EcSOD protein expression on the myotube membrane. Notably, transient IL-1β treatment of cultured myotubes and local administration in mouse skeletal muscle attenuated doxorubicin-induced muscle atrophy, which was associated with increased EcSOD expression. Collectively, these findings reveal that the regulation of skeletal muscle EcSOD via maintenance of IL-1β signalling is a potential therapeutic approach to counteract the muscle atrophy mediated by doxorubicin and oxidative stress. KEY POINTS: Doxorubicin, a commonly prescribed chemotherapeutic agent for patients with cancer, induces severe muscle atrophy owing to increased expression of oxidative stress; however, protective therapeutic targets are poorly understood. Doxorubicin induced muscle atrophy owing to increased expression of oxidative stress and atrogenes in association with decreased protein expression of extracellular superoxide dismutase (EcSOD) in cultured C2C12 myotubes and mouse skeletal muscle. Supplementation with EcSOD recombinant protein increased EcSOD levels on the cellular membrane of cultured myotubes, resulting in inhibition of doxorubicin-induced oxidative stress and myotube atrophy. Doxorubicin treatment decreased interleukin-1β (IL-1β) expression in cultured myotubes and skeletal muscle, whereas transient IL-1β treatment in vivo and in vitro increased EcSOD protein expression and attenuated doxorubicin-induced muscle atrophy. These findings reveal that regulation of skeletal muscle EcSOD via maintenance of IL-1β signalling is a possible therapeutic approach for muscle atrophy mediated by doxorubicin and oxidative stress.
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Affiliation(s)
- Mami Yamada
- Graduate School of Science, Nagoya City University, Nagoya Aichi, Japan
| | - Mitsuharu Okutsu
- Graduate School of Science, Nagoya City University, Nagoya Aichi, Japan
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2
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Yamada M, Warabi E, Oishi H, Lira VA, Okutsu M. Muscle p62 stimulates the expression of antioxidant proteins alleviating cancer cachexia. FASEB J 2023; 37:e23156. [PMID: 37624620 PMCID: PMC10560086 DOI: 10.1096/fj.202300349r] [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: 04/10/2023] [Revised: 07/26/2023] [Accepted: 08/10/2023] [Indexed: 08/26/2023]
Abstract
Oxidative stress plays an important role in skeletal muscle atrophy during cancer cachexia, and more glycolytic muscles are preferentially affected. Sequestosome1/SQSTM1 (i.e., p62), particularly when phosphorylated at Ser 349 (Ser 351 in mice), competitively binds to the Kelch-like ECH-associated protein 1 (Keap1) activating Nuclear factor erythroid 2-related factor 2 (Nrf2). Nrf2 then stimulates the transcription of antioxidant/electrophile-responsive elements in target genes. However, a potential role for p62 in the protection of muscle wasting in cachexia remains to be determined. Here, using the well-established cachexia-inducing model of Lewis Lung Carcinoma (LLC) in mice we demonstrate higher expression of antioxidant proteins (i.e., NQO1, HO-1, GSTM1, CuZnSOD, MnSOD, and EcSOD) in the more oxidative and cachexia resistant soleus muscle than in the more glycolytic and cachexia prone extensor digitorum longus muscle. This was accompanied by higher p62 (total and phosphorylated) and nuclear Nrf2 levels in the soleus, which were paralleled by higher expression of proteins known to either phosphorylate or promote p62 phosphorylation (i.e., NBR1, CK1, PKCδ, and TAK1). Muscle-specific p62 gain-of-function (i.e., in p62 mTg mice) activated Nrf2 nuclear translocation and increased the expression of multiple antioxidant proteins (i.e., CuZnSOD, MnSOD, EcSOD, NQO1, and GSTM1) in glycolytic muscles. Interestingly, skeletal muscle Nrf2 haplodeficiency blunted the increases of most of these proteins (i.e., CuZnSOD, EcSOD, and NQO1) suggesting that muscle p62 stimulates antioxidant protein expression also via additional, yet to be determined mechanisms. Of note, p62 gain-of-function mitigated glycolytic muscle wasting in LLC-affected mice. Collectively, our findings identify skeletal muscle p62 as a potential therapeutic target for cancer cachexia.
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Affiliation(s)
- Mami Yamada
- Graduate School of Science, Nagoya City University, Nagoya, Japan
| | - Eiji Warabi
- Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Hisashi Oishi
- Department of Comparative and Experimental Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Vitor A. Lira
- Department of Health and Human Physiology, Obesity Research and Education Initiative, F.O.E. Diabetes Research Center, Abboud Cardiovascular Research Center, Pappajohn Biomedical Institute, The University of Iowa, IA, USA
| | - Mitsuharu Okutsu
- Graduate School of Science, Nagoya City University, Nagoya, Japan
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3
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Okutsu M, Yamada M, Tokizawa K, Marui S, Suzuki K, Lira VA, Nagashima K. Regular exercise stimulates endothelium autophagy via IL-1 signaling in ApoE deficient mice. FASEB J 2021; 35:e21698. [PMID: 34085350 DOI: 10.1096/fj.202002790rr] [Citation(s) in RCA: 5] [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: 01/03/2021] [Revised: 05/09/2021] [Accepted: 05/11/2021] [Indexed: 01/21/2023]
Abstract
Regular exercise maintains arterial endothelial cell homeostasis and protects the arteries from vascular disease, such as peripheral artery disease and atherosclerosis. Autophagy, which is a cellular process that degrades misfolded or aggregate proteins and damaged organelles, plays an important role in maintaining organ and cellular homeostasis. However, it is unknown whether regular exercise stimulates autophagy in aorta endothelial cells of mice prone to atherosclerosis independently of their circulating lipid profile. Here, we observed that 16 weeks of voluntary exercise reduced high-fat diet-induced atherosclerotic plaque formation in the aortic root of ApoE deficient mice, and that this protection occurred without changes in circulating triglycerides, total cholesterol, and lipoproteins. Immunofluorescence analysis indicated that voluntary exercise increased levels of the autophagy protein LC3 in aortic endothelial cells. Interestingly, human umbilical vein endothelial cells (HUVECs) exposed to serum from voluntarily exercised mice displayed significantly increased LC3-I and LC3-II protein levels. Analysis of circulating cytokines demonstrated that voluntary exercise caused changes directly relevant to IL-1 signaling (ie, decreased interleukin-1 receptor antagonist [IL-1ra] while also increasing IL-1α). HUVECs exposed to IL-1α and IL-1β recombinant protein significantly increased LC3 mRNA expression, LC3-I and LC3-II protein levels, and autophagy flux. Collectively, these results suggest that regular exercise protects arteries from ApoE deficient mice against atherosclerosis at least in part by stimulating endothelial cell autophagy via enhanced IL-1 signaling.
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Affiliation(s)
- Mitsuharu Okutsu
- Graduate School of Science, Nagoya City University, Nagoya, Japan
| | - Mami Yamada
- Graduate School of Science, Nagoya City University, Nagoya, Japan
| | - Ken Tokizawa
- National Institute of Occupational Safety and Health, Tokyo, Japan
| | - Shuri Marui
- Faculty of Human Sciences, Waseda University, Tokorozawa, Japan
| | | | - Vitor A Lira
- Department of Health & Human Physiology, Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA, USA
| | - Kei Nagashima
- Faculty of Human Sciences, Waseda University, Tokorozawa, Japan
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4
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Himori K, Yamada M, Okutsu M. Nrf2 regulates skeletal muscle mass and function in a mouse model of experimental autoimmune myositis. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.04968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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5
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Yamada M, Okutsu M. Cancer cachexia‐mediated regulation of EcSOD synthesis requires Nrf2 activation by p62 phosphorylation. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.05272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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6
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Onoki T, Izumi Y, Takahashi M, Murakami S, Matsumaru D, Ohta N, Wati SM, Hatanaka N, Katsuoka F, Okutsu M, Yabe Y, Hagiwara Y, Kanzaki M, Bamba T, Itoi E, Motohashi H. Skeletal muscle-specific Keap1 disruption modulates fatty acid utilization and enhances exercise capacity in female mice. Redox Biol 2021; 43:101966. [PMID: 33857757 PMCID: PMC8050939 DOI: 10.1016/j.redox.2021.101966] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 03/23/2021] [Accepted: 03/31/2021] [Indexed: 12/13/2022] Open
Abstract
Skeletal muscle health is important for the prevention of various age-related diseases. The loss of skeletal muscle mass, which is known as sarcopenia, underlies physical disability, poor quality of life and chronic diseases in elderly people. The transcription factor NRF2 plays important roles in the regulation of the cellular defense against oxidative stress, as well as the metabolism and mitochondrial activity. To determine the contribution of skeletal muscle NRF2 to exercise capacity, we conducted skeletal muscle-specific inhibition of KEAP1, which is a negative regulator of NRF2, and examined the cell-autonomous and non-cell-autonomous effects of NRF2 pathway activation in skeletal muscles. We found that NRF2 activation in skeletal muscles increased slow oxidative muscle fiber type and improved exercise endurance capacity in female mice. We also observed that female mice with NRF2 pathway activation in their skeletal muscles exhibited enhanced exercise-induced mobilization and β-oxidation of fatty acids. These results indicate that NRF2 activation in skeletal muscles promotes communication with adipose tissues via humoral and/or neuronal signaling and facilitates the utilization of fatty acids as an energy source, resulting in increased mitochondrial activity and efficient energy production during exercise, which leads to improved exercise endurance. Systemic Keap1 knockdown enhances exercise endurance capacity in mice. Keap1 deficiency in skeletal muscle activates NRF2 pathway. Keap1 deficiency in skeletal muscle enhances endurance capacity in female mice. Keap1 deficiency in skeletal muscle promotes exercise-induced fatty acid utilization.
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Affiliation(s)
- Takahiro Onoki
- Department of Gene Expression Regulation, IDAC, Tohoku University, Sendai, 980-8575, Japan; Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, 980-8575, Japan
| | - Yoshihiro Izumi
- Division of Metabolomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Masatomo Takahashi
- Division of Metabolomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Shohei Murakami
- Department of Gene Expression Regulation, IDAC, Tohoku University, Sendai, 980-8575, Japan
| | - Daisuke Matsumaru
- Department of Gene Expression Regulation, IDAC, Tohoku University, Sendai, 980-8575, Japan
| | - Nao Ohta
- Department of Gene Expression Regulation, IDAC, Tohoku University, Sendai, 980-8575, Japan
| | - Sisca Meida Wati
- Department of Gene Expression Regulation, IDAC, Tohoku University, Sendai, 980-8575, Japan
| | - Nozomi Hatanaka
- Department of Integrative Genomics, Tohoku Medical Megabank Organization, Tohoku University, Sendai, 980-8573, Japan
| | - Fumiki Katsuoka
- Department of Integrative Genomics, Tohoku Medical Megabank Organization, Tohoku University, Sendai, 980-8573, Japan
| | - Mitsuharu Okutsu
- Graduate School of Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Yutaka Yabe
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, 980-8575, Japan
| | - Yoshihiro Hagiwara
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, 980-8575, Japan
| | - Makoto Kanzaki
- Graduate School of Biomedical Engineering, Tohoku University, Sendai, 980-8575, Japan
| | - Takeshi Bamba
- Division of Metabolomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, 980-8575, Japan
| | - Hozumi Motohashi
- Department of Gene Expression Regulation, IDAC, Tohoku University, Sendai, 980-8575, Japan.
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7
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Udagawa T, Okutsu M, Kanamori T, Konishi M, Takase H, Morio T. POS-059 SUCCESSFUL TREATMENT OF REFRACTORY TUBULOINTERSTITIAL NEPHRITIS AND UVEITIS SYNDROME USING MYCOPHENOLATE MOFETIL. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.065] [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: 11/25/2022] Open
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8
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Yamada M, Okutsu M. Lack of muscle p62/SQSTM1 protects against high fat diet‐induced muscle wasting. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.09638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Okutsu M, Yamada M. Muscle‐specific Nrf2 deficiency exacerbates cancer cachexia‐induced skeletal muscle atrophy. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.05173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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Yamada M, Hokazono C, Tokizawa K, Marui S, Iwata M, Lira VA, Suzuki K, Miura S, Nagashima K, Okutsu M. Muscle-derived SDF-1α/CXCL12 modulates endothelial cell proliferation but not exercise training-induced angiogenesis. Am J Physiol Regul Integr Comp Physiol 2019; 317:R770-R779. [DOI: 10.1152/ajpregu.00155.2019] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chemokines are critical mediators of angiogenesis in several physiological and pathological conditions; however, a potential role for muscle-derived chemokines in exercise-stimulated angiogenesis in skeletal muscle remains poorly understood. Here, we postulated that the chemokine stromal cell-derived factor-1 (SDF-1α/C-X-C motif chemokine ligand 12: CXCL12), shown to promote neovascularization in several organs, contributes to angiogenesis in skeletal muscle. We found that CXCL12 is abundantly expressed in capillary-rich oxidative soleus and exercise-trained plantaris muscles. CXCL12 mRNA and protein were also abundantly expressed in muscle-specific peroxisome proliferator-activated receptor γ coactivator 1α transgenic mice, which have a high proportion of oxidative muscle fibers and capillaries when compared with wild-type littermates. We then generated CXCL12 muscle-specific knockout mice but observed normal baseline capillary density and normal angiogenesis in these mice when they were exercise trained. To get further insight into a potential CXCL12 role in a myofiber-endothelial cell crosstalk, we first mechanically stretched C2C12 myotubes, a model known to induce stretch-related chemokine release, and observed increased CXCL12 mRNA and protein. Human umbilical vein endothelial cells (HUVECs) exposed to conditioned medium from cyclically stretched C2C12 myotubes displayed increased proliferation, which was dependent on CXCL12-mediated signaling through the CXCR4 receptor. However, HUVEC migration and tube formation were unaltered under these conditions. Collectively, our findings indicate that increased muscle contractile activity enhances CXCL12 production and release from muscle, potentially contributing to endothelial cell proliferation. However, redundant signals from other angiogenic factors are likely sufficient to sustain normal endothelial cell migration and tube formation activity, thereby preserving baseline capillary density and exercise training-mediated angiogenesis in muscles lacking CXCL12.
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Affiliation(s)
- Mami Yamada
- Graduate School of Natural Sciences, Nagoya City University, Nagoya, Japan
| | - Chihiro Hokazono
- Graduate School of Natural Sciences, Nagoya City University, Nagoya, Japan
| | - Ken Tokizawa
- National Institute of Occupational Safety and Health, Tokyo, Japan
| | - Shuri Marui
- Faculty of Human Sciences, Waseda University, Tokorozawa, Japan
| | - Masahiro Iwata
- Faculty of Health Sciences, Department of Rehabilitation, Nihon Fukushi University, Handa, Japan
| | - Vitor A. Lira
- Department of Health & Human Physiology, Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, Iowa
| | | | - Shinji Miura
- Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka, Japan
| | - Kei Nagashima
- Faculty of Human Sciences, Waseda University, Tokorozawa, Japan
| | - Mitsuharu Okutsu
- Graduate School of Natural Sciences, Nagoya City University, Nagoya, Japan
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11
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Watanabe Y, Mitomo S, Naganuma T, Nakajima A, Tani K, Matsuoka S, Kawamoto H, Tanaka K, Sato T, Ishiguro H, Okutsu M, Tahara S, Kurita N, Nakamura SH, Nakamura S. P6530Clinical outcomes of dialysis patients treated with current generation DES for left main distal bifurcation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Objectives
We assessed clinical outcomes after percutaneous coronary intervention (PCI) for unprotected left main (ULM) using current generation drug eluting stents (cDES) in hemodialysis (HD) patients compared to general populations.
Methods
We identified 1269 consecutive patients who underwent PCI for ULM distal bifurcation lesions. Of them, 563 patients were treated with cDES (512 non HD and 51 HD patients). The primary endpoint was target lesion failure (TLF) at 3 years, defined as a composite of cardiac death, target lesion revascularization (TLR) and myocardial infarction (MI).
Results
HD group was more likely to have diabetes mellitus (70.0% vs. 45.8%, p=0.002), peripheral artery disease (56.0% vs. 14.9%, p<0.001), and lower ejection fraction (52.6% vs. 56.3%, p=0.026). The rate of TLF at 3 years was significantly higher in the HD group (adjusted Hazard ratio [HR] 2.59; 95% confidence interval [CI], 1.54–4.37; p<0.001). Cardiac mortality was significantly higher in the HD group (adjusted HR 4.49; 95% CI, 2.07–9.74; p<0.001). The rates of TLR for LM-left anterior descending artery (LAD) and left circumflex ostium (LCXos) were significantly higher in the HD group (LMT-LAD: adjusted HR 3.10; 95% CI, 1.31–7.33; p=0.01, LCXos: adjusted HR 2.56; 95% CI, 1.32–4.94; p=0.005). The rate of MI was similar between the 2 groups.
Conclusions
Hemodialysis was strongly associated with adverse events after PCI for ULM distal bifurcation lesions even with cDES.
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Affiliation(s)
| | - S Mitomo
- New Tokyo Hospital, Matsudo, Japan
| | | | | | - K Tani
- New Tokyo Hospital, Matsudo, Japan
| | | | | | - K Tanaka
- New Tokyo Hospital, Matsudo, Japan
| | - T Sato
- New Tokyo Hospital, Matsudo, Japan
| | | | - M Okutsu
- New Tokyo Hospital, Matsudo, Japan
| | - S Tahara
- New Tokyo Hospital, Matsudo, Japan
| | - N Kurita
- New Tokyo Hospital, Matsudo, Japan
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12
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Okutsu M, Yamada M, Hokazono C, Tokizawa K, Marui S, Iwata M, Lira VA, Suzuki K, Miura S, Nagashima K. Muscle‐derived SDF‐1α/CXCL12 modulates endothelial cell proliferation but is not required for exercise training‐induced angiogenesis. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.lb433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Ken Tokizawa
- National Institute of Occupational Safety and HealthKiyoseJapan
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13
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Yamada M, Iwata M, Warabi E, Oishi H, Lira VA, Okutsu M. Muscle contractile activity‐mediated regulation of antioxidant enzymes in oxidative muscle requires p62/SQSTM1 phosphorylation‐induced Nrf2 activation. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.lb438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Yamada M, Iwata M, Warabi E, Oishi H, Lira VA, Okutsu M. p62/SQSTM1 and Nrf2 are essential for exercise‐mediated enhancement of antioxidant protein expression in oxidative muscle. FASEB J 2019; 33:8022-8032. [DOI: 10.1096/fj.201900133r] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mami Yamada
- Graduate School of Natural SciencesNagoya City University Nagoya Japan
| | - Masahiro Iwata
- Department of RehabilitationFaculty of Health SciencesNihon Fukushi University Handa Japan
| | - Eiji Warabi
- Faculty of MedicineUniversity of Tsukuba Tsukuba Japan
| | - Hisashi Oishi
- Department of Comparative and Experimental MedicineGraduate School of Medical SciencesNagoya City University Nagoya Japan
| | - Vitor A. Lira
- Department of Health and Human PhysiologyObesity Research and Education InitiativeFraternal Order of Eagles (F.O.E.) Diabetes Research CenterAbboud Cardiovascular Research CenterPappajohn Biomedical InstituteThe University of Iowa Iowa City Iowa USA
| | - Mitsuharu Okutsu
- Graduate School of Natural SciencesNagoya City University Nagoya Japan
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15
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Horio T, Iwashima Y, Yoshihara F, Akiyama M, Okutsu M, Kawano Y. 6169Combination therapy with renin-angiotensin system inhibitors and statins is associated with reduced incidence of new-onset atrial fibrillation in hypertensive patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.6169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Horio
- Kawasaki Medical School General Medical Center, Department of Internal Medicine, Okayama, Japan
| | - Y Iwashima
- National Cerebral and Cardiovascular Center, Division of Hypertension and Nephrology, Osaka, Japan
| | - F Yoshihara
- National Cerebral and Cardiovascular Center, Division of Hypertension and Nephrology, Osaka, Japan
| | - M Akiyama
- Kawasaki Medical School General Medical Center, Department of Internal Medicine, Okayama, Japan
| | - M Okutsu
- Kawasaki Medical School General Medical Center, Department of Internal Medicine, Okayama, Japan
| | - Y Kawano
- Faculty of Fukuoka Medical Technology, Teikyo University, Omuta, Japan
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16
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Yamada M, Hokazono C, Okutsu M. Maternal exercise training attenuates endotoxin-induced sepsis in mice offspring. Biochem Biophys Rep 2018; 15:19-24. [PMID: 29928698 PMCID: PMC6008276 DOI: 10.1016/j.bbrep.2018.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 03/22/2018] [Revised: 05/11/2018] [Accepted: 06/02/2018] [Indexed: 12/11/2022] Open
Abstract
Regular exercise during pregnancy can prevent offspring from several diseases, such as cardiovascular diseases, obesity, and type II diabetes during adulthood. However, little information is available about whether maternal exercises during pregnancy protect the offspring from infectious diseases, such as sepsis and multiple organ dysfunction syndrome (MODS). This study aimed to investigate whether maternal exercise training protects the offspring from endotoxin-induced septic shock in mice. Female C57BL/6 mice performed voluntary wheel exercises during pregnancy. All dams and offspring were fed normal chow with sedentary activity during lactation and after weaning. At 10-week-old, mice were intraperitoneally injected a lethal (30 mg/kg) or nonlethal (15 mg/kg) dose of lipopolysaccharide (LPS), following which the survival of mice that were administered a lethal dose was monitored for 60 h. Plasma, lung, and liver samples were collected 18 h after the injection to evaluate the cytokine concentration or mRNA expression from those administered a nonlethal dose. Although maternal exercise training could not prevent lethality during an LPS-induced septic shock, it significantly inhibited the LPS-induced loss of body weight in female offspring. Regular maternal exercise significantly inhibited the mRNA expression of the LPS-induced inflammatory cytokines, such as interleukin-1β (IL-1β) and interferon-γ (IFN-γ), in the plasma and liver. Thus, maternal exercise inhibited the LPS-induced inflammatory response in female offspring, suggesting that regular exercise during pregnancy could be a potential candidate of the onset of sepsis and MODS in offspring.
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Affiliation(s)
- Mami Yamada
- Graduate School of Natural Sciences, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8501, Japan
| | - Chihiro Hokazono
- Graduate School of Natural Sciences, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8501, Japan
| | - Mitsuharu Okutsu
- Graduate School of Natural Sciences, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8501, Japan
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17
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Yamada M, Iwata M, Okutsu M. p62/SQSTM1 is required for exercise training‐mediated regulation of antioxidant enzymes in skeletal muscle. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.857.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Okutsu M, Yamada M, Iwata M. The role of Nrf2 in exercise training‐mediated regulation of antioxidant enzymes in skeletal muscle. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.857.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Call JA, Donet J, Martin KS, Sharma AK, Chen X, Zhang J, Cai J, Galarreta CA, Okutsu M, Du Z, Lira VA, Zhang M, Mehrad B, Annex BH, Klibanov AL, Bowler RP, Laubach VE, Peirce SM, Yan Z. Muscle-derived extracellular superoxide dismutase inhibits endothelial activation and protects against multiple organ dysfunction syndrome in mice. Free Radic Biol Med 2017; 113:212-223. [PMID: 28982599 PMCID: PMC5740866 DOI: 10.1016/j.freeradbiomed.2017.09.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/22/2017] [Accepted: 09/28/2017] [Indexed: 12/20/2022]
Abstract
Multiple organ dysfunction syndrome (MODS) is a detrimental clinical complication in critically ill patients with high mortality. Emerging evidence suggests that oxidative stress and endothelial activation (induced expression of adhesion molecules) of vital organ vasculatures are key, early steps in the pathogenesis. We aimed to ascertain the role and mechanism(s) of enhanced extracellular superoxide dismutase (EcSOD) expression in skeletal muscle in protection against MODS induced by endotoxemia. We showed that EcSOD overexpressed in skeletal muscle-specific transgenic mice (TG) redistributes to other peripheral organs through the circulation and enriches at the endothelium of the vasculatures. TG mice are resistant to endotoxemia (induced by lipopolysaccharide [LPS] injection) in developing MODS with significantly reduced mortality and organ damages compared with the wild type littermates (WT). Heterogenic parabiosis between TG and WT mice conferred a significant protection to WT mice, whereas mice with R213G knock-in mutation, a human single nucleotide polymorphism leading to reduced binding EcSOD in peripheral organs, exacerbated the organ damages. Mechanistically, EcSOD inhibits vascular cell adhesion molecule 1 expression and inflammatory leukocyte adhesion to the vascular wall of vital organs, blocking an early step of the pathology in organ damage under endotoxemia. Therefore, enhanced expression of EcSOD in skeletal muscle profoundly protects against MODS by inhibiting endothelial activation and inflammatory cell adhesion, which could be a promising therapy for MODS.
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Affiliation(s)
- Jarrod A Call
- Center for Skeletal Muscle Research at Robert Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA; Departments of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Jean Donet
- Center for Skeletal Muscle Research at Robert Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA; Departments of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Kyle S Martin
- Departments of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Ashish K Sharma
- Departments of Surgery, University of Virginia, Charlottesville, VA 22908, USA
| | - Xiaobin Chen
- Center for Skeletal Muscle Research at Robert Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA; Department of Cardiology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan Province 410008, China
| | - Jiuzhi Zhang
- Center for Skeletal Muscle Research at Robert Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA; Department of Critical Care Medicine and Institute of Critical Care Medicine, First Affiliate Hospital of Dalian Medical University, 222 Zhongshan Road, Dalian, Liaoning Province 116011, China
| | - Jie Cai
- Center for Skeletal Muscle Research at Robert Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA; Department of Infectious Disease, First Affiliate Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu Province 210029, China
| | - Carolina A Galarreta
- Departments of Pediatrics, University of Virginia, Charlottesville, VA 22908, USA
| | - Mitsuharu Okutsu
- Center for Skeletal Muscle Research at Robert Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA; Departments of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Zhongmin Du
- Departments of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Vitor A Lira
- Center for Skeletal Muscle Research at Robert Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA; Departments of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Mei Zhang
- Center for Skeletal Muscle Research at Robert Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA; Departments of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Borna Mehrad
- Departments of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Brian H Annex
- Departments of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | | | - Russell P Bowler
- Division of Pulmonary Medicine, Department of Medicine, National Jewish Health, Denver, CO, USA
| | - Victor E Laubach
- Departments of Surgery, University of Virginia, Charlottesville, VA 22908, USA
| | - Shayn M Peirce
- Departments of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - Zhen Yan
- Center for Skeletal Muscle Research at Robert Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA; Departments of Medicine, University of Virginia, Charlottesville, VA 22908, USA; Departments of Pharmacology, University of Virginia, Charlottesville, VA 22908, USA; Departments of Molecular Physiology & Biological Physics, University of Virginia, Charlottesville, VA 22908, USA.
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Horio T, Iwashima Y, Yoshihara F, Nakamura S, Tanaka H, Okutsu M, Akiyama M, Komatsubara I, Okimoto N, Kawano Y. P1347Long-term effect of statin therapy on annual change in renal function in hypertensive patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1347] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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21
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Dokun AO, Chen L, Okutsu M, Farber CR, Hazarika S, Jones WS, Craig D, Marchuk DA, Lye RJ, Shah SH, Annex BH. ADAM12: a genetic modifier of preclinical peripheral arterial disease. Am J Physiol Heart Circ Physiol 2015; 309:H790-803. [PMID: 26163448 DOI: 10.1152/ajpheart.00803.2014] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 06/07/2015] [Indexed: 01/27/2023]
Abstract
In prior studies from multiple groups, outcomes following experimental peripheral arterial disease (PAD) differed considerably across inbred mouse strains. Similarly, in humans with PAD, disease outcomes differ, even when there are similarities in risk factors, disease anatomy, arteriosclerotic burden, and hemodynamic measures. Previously, we identified a locus on mouse chromosome 7, limb salvage-associated quantitative trait locus 1 (LSq-1), which was sufficient to modify outcomes following experimental PAD. We compared expression of genes within LSq-1 in Balb/c mice, which normally show poor outcomes following experimental PAD, with that in C57Bl/6 mice, which normally show favorable outcomes, and found that a disintegrin and metalloproteinase gene 12 (ADAM12) had the most differential expression. Augmentation of ADAM12 expression in vivo improved outcomes following experimental PAD in Balb/c mice, whereas knockdown of ADAM12 made outcomes worse in C57Bl/6 mice. In vitro, ADAM12 expression modulates endothelial cell proliferation, survival, and angiogenesis in ischemia, and this appeared to be dependent on tyrosine kinase with Ig-like and EGF-like domain 2 (Tie2) activation. ADAM12 is sufficient to modify PAD severity in mice, and this likely occurs through regulation of Tie2.
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Affiliation(s)
- Ayotunde O Dokun
- Division of Endocrinology, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia; The Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia;
| | - Lingdan Chen
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia
| | - Mitsuharu Okutsu
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia
| | - Charles R Farber
- Division of Public Health Genomics, University of Virginia School of Medicine, Charlottesville, Virginia
| | - Surovi Hazarika
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia
| | - W Schuyler Jones
- Division of Cardiology, Department of Medicine, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, North Carolina; and
| | - Damian Craig
- Division of Cardiology, Department of Medicine, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, North Carolina; and
| | - Douglas A Marchuk
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina
| | - R John Lye
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia; The Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia
| | - Svati H Shah
- Division of Cardiology, Department of Medicine, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, North Carolina; and
| | - Brian H Annex
- Division of Cardiovascular Medicine, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia; The Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia
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Call JA, Chain KH, Martin KS, Lira VA, Okutsu M, Zhang M, Yan Z. Enhanced skeletal muscle expression of extracellular superoxide dismutase mitigates streptozotocin-induced diabetic cardiomyopathy by reducing oxidative stress and aberrant cell signaling. Circ Heart Fail 2014; 8:188-97. [PMID: 25504759 DOI: 10.1161/circheartfailure.114.001540] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Exercise training enhances extracellular superoxide dismutase (EcSOD) expression in skeletal muscle and elicits positive health outcomes in individuals with diabetes mellitus. The goal of this study was to determine if enhanced skeletal muscle expression of EcSOD is sufficient to mitigate streptozotocin-induced diabetic cardiomyopathy. METHODS AND RESULTS Exercise training promotes EcSOD expression in skeletal muscle and provides protection against diabetic cardiomyopathy; however, it is not known if enhanced expression of EcSOD in skeletal muscle plays a functional role in this protection. Here, we show that skeletal muscle-specific EcSOD transgenic mice are protected from cardiac hypertrophy, fibrosis, and dysfunction under the condition of type 1 diabetes mellitus induced by streptozotocin injection. We also show that both exercise training and muscle-specific transgenic expression of EcSOD result in elevated EcSOD protein in the blood and heart without increased transcription in the heart, suggesting that enhanced expression of EcSOD from skeletal muscle redistributes to the heart. Importantly, cardiac tissue in transgenic mice displayed significantly reduced oxidative stress, aberrant cell signaling, and inflammatory cytokine expression compared with wild-type mice under the same diabetic condition. CONCLUSIONS Enhanced expression of EcSOD in skeletal muscle is sufficient to mitigate streptozotocin-induced diabetic cardiomyopathy through attenuation of oxidative stress, aberrant cell signaling, and inflammation, suggesting a cross-organ mechanism by which exercise training improves cardiac function in diabetes mellitus.
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Affiliation(s)
- Jarrod A Call
- From the Departments of Medicine (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), Pharmacology (Z.Y.), Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), and Department of Biomedical Engineering (K.S.M.), University of Virginia, Charlottesville
| | - Kristopher H Chain
- From the Departments of Medicine (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), Pharmacology (Z.Y.), Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), and Department of Biomedical Engineering (K.S.M.), University of Virginia, Charlottesville
| | - Kyle S Martin
- From the Departments of Medicine (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), Pharmacology (Z.Y.), Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), and Department of Biomedical Engineering (K.S.M.), University of Virginia, Charlottesville
| | - Vitor A Lira
- From the Departments of Medicine (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), Pharmacology (Z.Y.), Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), and Department of Biomedical Engineering (K.S.M.), University of Virginia, Charlottesville
| | - Mitsuharu Okutsu
- From the Departments of Medicine (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), Pharmacology (Z.Y.), Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), and Department of Biomedical Engineering (K.S.M.), University of Virginia, Charlottesville
| | - Mei Zhang
- From the Departments of Medicine (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), Pharmacology (Z.Y.), Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), and Department of Biomedical Engineering (K.S.M.), University of Virginia, Charlottesville
| | - Zhen Yan
- From the Departments of Medicine (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), Pharmacology (Z.Y.), Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center (J.A.C., K.H.C., V.A.L., M.O., M.Z., Z.Y.), and Department of Biomedical Engineering (K.S.M.), University of Virginia, Charlottesville.
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Okutsu M, Ishii K, Niu K, Nagatomi R. Cortisol is not the primary mediator for augmented CXCR4 expression on natural killer cells after acute exercise. J Appl Physiol (1985) 2014; 117:199-204. [DOI: 10.1152/japplphysiol.00176.2014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
CXC-chemokine receptor 4 (CXCR4) and its ligand, stromal-derived factor 1α (SDF-1α; also known as CXCL12), are crucial for the redistribution of immune cells after acute exercise. We investigated the relationships between acute exercise and CXCR4 expression on natural killer (NK) cells. Peripheral blood mononuclear cells (PBMCs) were cultured with cortisol and analyzed for CXCR4 expression on CD3−/CD56+ NK cells and NK cell migration activity. To determine the effect of exercise, we isolated PBMCs from subjects before and after a 90-min exercise at 70% peak O2 uptake (V̇o2peak) and determined the changes in CXCR4 expression on NK cells after exercise. We cultured PBMCs with plasma obtained before and after exercise and with the glucocorticoid antagonist RU-486 to determine NK cell migration activity and the effects of cortisol on CXCR4 expression in vitro. Cortisol treatment increased CXCR4 expression ( P < 0.05) and migration activity ( P < 0.05) of NK cells. Exercise did not affect CXCR4 expression on NK cells, whereas incubating them with postexercise plasma significantly increased CXCR4 expression ( P < 0.05) and migration activity ( P < 0.05). RU-486 blocked cortisol-induced CXCR4 upregulation on NK cells, but only partially blocked (7%) CXCR4 upregulation when PMBCs were incubated with postexercise plasma. Thus acute exercise increases CXCR4 expression on NK cells and their migration activity and may contribute to NK cell redistribution after acute exercise; however, cortisol did not appear to be the primary mediator of augmented CXCR4 expression.
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Affiliation(s)
- Mitsuharu Okutsu
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan
- Institute for Biomedical Engineering, Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, Tokyo, Japan
- Graduate School of Natural Sciences, Nagoya City University, Nagoya, Japan
| | - Kenji Ishii
- Nanodevice Engineering, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - Kaijun Niu
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Ryoichi Nagatomi
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan; and
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Laker RC, Lillard TS, Okutsu M, Zhang M, Hoehn KL, Connelly JJ, Yan Z. Exercise prevents maternal high-fat diet-induced hypermethylation of the Pgc-1α gene and age-dependent metabolic dysfunction in the offspring. Diabetes 2014; 63:1605-11. [PMID: 24430439 PMCID: PMC5860829 DOI: 10.2337/db13-1614] [Citation(s) in RCA: 148] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Abnormal conditions during early development adversely affect later health. We investigated whether maternal exercise could protect offspring from adverse effects of a maternal high-fat diet (HFD) with a focus on the metabolic outcomes and epigenetic regulation of the metabolic master regulator, peroxisome proliferator-activated receptor γ coactivator-1α (Pgc-1α). Female C57BL/6 mice were exposed to normal chow, an HFD, or an HFD with voluntary wheel exercise for 6 weeks before and throughout pregnancy. Methylation of the Pgc-1α promoter at CpG site -260 and expression of Pgc-1α mRNA were assessed in skeletal muscle from neonatal and 12-month-old offspring, and glucose and insulin tolerance tests were performed in the female offspring at 6, 9, and 12 months. Hypermethylation of the Pgc-1α promoter caused by a maternal HFD was detected at birth and was maintained until 12 months of age with a trend of reduced expression of Pgc-1α mRNA (P = 0.065) and its target genes. Maternal exercise prevented maternal HFD-induced Pgc-1α hypermethylation and enhanced Pgc-1α and its target gene expression, concurrent with amelioration of age-associated metabolic dysfunction at 9 months of age in the offspring. Therefore, maternal exercise is a powerful lifestyle intervention for preventing maternal HFD-induced epigenetic and metabolic dysregulation in the offspring.
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Affiliation(s)
- Rhianna C. Laker
- Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA
- Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA
| | - Travis S. Lillard
- Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA
| | - Mitsuharu Okutsu
- Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA
- Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA
- Cardiovascular & Metabolic Disorders Program, Duke-NUS Graduate Medical School, Singapore
| | - Mei Zhang
- Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA
- Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA
- Cardiovascular & Metabolic Disorders Program, Duke-NUS Graduate Medical School, Singapore
| | - Kyle L. Hoehn
- Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA
- Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA
| | - Jessica J. Connelly
- Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA
- Department of Molecular Physiology & Biological Physics, University of Virginia School of Medicine, Charlottesville, VA
- Corresponding authors: Jessica J. Connelly, , and Zhen Yan,
| | - Zhen Yan
- Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA
- Center for Skeletal Muscle Research at the Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA
- Cardiovascular & Metabolic Disorders Program, Duke-NUS Graduate Medical School, Singapore
- Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA
- Department of Molecular Physiology & Biological Physics, University of Virginia School of Medicine, Charlottesville, VA
- Corresponding authors: Jessica J. Connelly, , and Zhen Yan,
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Okutsu M, Call JA, Lira VA, Zhang M, Donet JA, French BA, Martin KS, Peirce-Cottler SM, Rembold CM, Annex BH, Yan Z. Extracellular superoxide dismutase ameliorates skeletal muscle abnormalities, cachexia, and exercise intolerance in mice with congestive heart failure. Circ Heart Fail 2014; 7:519-30. [PMID: 24523418 DOI: 10.1161/circheartfailure.113.000841] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND Congestive heart failure (CHF) is a leading cause of morbidity and mortality, and oxidative stress has been implicated in the pathogenesis of cachexia (muscle wasting) and the hallmark symptom, exercise intolerance. We have previously shown that a nitric oxide-dependent antioxidant defense renders oxidative skeletal muscle resistant to catabolic wasting. Here, we aimed to identify and determine the functional role of nitric oxide-inducible antioxidant enzyme(s) in protection against cardiac cachexia and exercise intolerance in CHF. METHODS AND RESULTS We demonstrated that systemic administration of endogenous nitric oxide donor S-nitrosoglutathione in mice blocked the reduction of extracellular superoxide dismutase (EcSOD) protein expression, as well as the induction of MAFbx/Atrogin-1 mRNA expression and muscle atrophy induced by glucocorticoid. We further showed that endogenous EcSOD, expressed primarily by type IId/x and IIa myofibers and enriched at endothelial cells, is induced by exercise training. Muscle-specific overexpression of EcSOD by somatic gene transfer or transgenesis (muscle creatine kinase [MCK]-EcSOD) in mice significantly attenuated muscle atrophy. Importantly, when crossbred into a mouse genetic model of CHF (α-myosin heavy chain-calsequestrin), MCK-EcSOD transgenic mice had significant attenuation of cachexia with preserved whole body muscle strength and endurance capacity in the absence of reduced HF. Enhanced EcSOD expression significantly ameliorated CHF-induced oxidative stress, MAFbx/Atrogin-1 mRNA expression, loss of mitochondria, and vascular rarefaction in skeletal muscle. CONCLUSIONS EcSOD plays an important antioxidant defense function in skeletal muscle against cardiac cachexia and exercise intolerance in CHF.
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Affiliation(s)
- Mitsuharu Okutsu
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Jarrod A Call
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Vitor A Lira
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Mei Zhang
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Jean A Donet
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Brent A French
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Kyle S Martin
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Shayn M Peirce-Cottler
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Christopher M Rembold
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Brian H Annex
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.)
| | - Zhen Yan
- From the Departments of Medicine (M.O., J.A.C., V.A.L., M.Z., J.A.D., C.M.R., B.H.A., Z.Y.), Pharmacology (Z.Y.), and Molecular Physiology and Biological Physics (Z.Y.), Center for Skeletal Muscle Research (M.O., J.A.C., V.A.L., M.Z., J.A.D., Z.Y.), Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA; and Department of Biomedical Engineering, University of Virginia, Charlottesville, VA (B.A.F., K.S.M., S.M.P.-C.).
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Okutsu M, Lira VA, Higashida K, Peake J, Higuchi M, Suzuki K. Corticosterone accelerates atherosclerosis in the apolipoprotein E-deficient mouse. Atherosclerosis 2014; 232:414-9. [DOI: 10.1016/j.atherosclerosis.2013.11.076] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 11/18/2013] [Accepted: 11/20/2013] [Indexed: 01/23/2023]
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Lira VA, Okutsu M, Zhang M, Greene NP, Laker RC, Breen DS, Hoehn KL, Yan Z. Autophagy is required for exercise training-induced skeletal muscle adaptation and improvement of physical performance. FASEB J 2013; 27:4184-93. [PMID: 23825228 DOI: 10.1096/fj.13-228486] [Citation(s) in RCA: 300] [Impact Index Per Article: 27.3] [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: 01/12/2023]
Abstract
Pathological and physiological stimuli, including acute exercise, activate autophagy; however, it is unknown whether exercise training alters basal levels of autophagy and whether autophagy is required for skeletal muscle adaptation to training. We observed greater autophagy flux (i.e., a combination of increased LC3-II/LC3-I ratio and LC3-II levels and reduced p62 protein content indicating a higher rate of initiation and resolution of autophagic events), autophagy protein expression (i.e., Atg6/Beclin1, Atg7, and Atg8/LC3) and mitophagy protein Bnip3 expression in tonic, oxidative muscle compared to muscles of either mixed fiber types or of predominant glycolytic fibers in mice. Long-term voluntary running (4 wk) resulted in increased basal autophagy flux and expression of autophagy proteins and Bnip3 in parallel to mitochondrial biogenesis in plantaris muscle with mixed fiber types. Conversely, exercise training promoted autophagy protein expression with no significant increases of autophagy flux and mitochondrial biogenesis in the oxidative soleus muscle. We also observed increased basal autophagy flux and Bnip3 content without increases in autophagy protein expression in the plantaris muscle of sedentary muscle-specific Pgc-1α transgenic mice, a genetic model of augmented mitochondrial biogenesis. These findings reveal that endurance exercise training-induced increases in basal autophagy, including mitophagy, only take place if an enhanced oxidative phenotype is achieved. However, autophagy protein expression is mainly dictated by contractile activity independently of enhancements in oxidative phenotype. Exercise-trained mice heterozygous for the critical autophagy protein Atg6 showed attenuated increases of basal autophagy flux, mitochondrial content, and angiogenesis in skeletal muscle, along with impaired improvement of endurance capacity. These results demonstrate that increased basal autophagy is required for endurance exercise training-induced skeletal muscle adaptation and improvement of physical performance.
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Affiliation(s)
- Vitor A Lira
- 1University of Virginia School of Medicine, 409 Ln. Rd., MR4-6041A, Charlottesville, VA 22908, USA.
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Rowe GC, Patten IS, Zsengeller ZK, El-Khoury R, Okutsu M, Bampoh S, Koulisis N, Farrell C, Hirshman MF, Yan Z, Goodyear LJ, Rustin P, Arany Z. Disconnecting mitochondrial content from respiratory chain capacity in PGC-1-deficient skeletal muscle. Cell Rep 2013; 3:1449-56. [PMID: 23707060 DOI: 10.1016/j.celrep.2013.04.023] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 03/08/2013] [Accepted: 04/25/2013] [Indexed: 01/21/2023] Open
Abstract
The transcriptional coactivators PGC-1α and PGC-1β are widely thought to be required for mitochondrial biogenesis and fiber typing in skeletal muscle. Here, we show that mice lacking both PGC-1s in myocytes do indeed have profoundly deficient mitochondrial respiration but, surprisingly, have preserved mitochondrial content, isolated muscle contraction capacity, fiber-type composition, in-cage ambulation, and voluntary running capacity. Most of these findings are recapitulated in cell culture and, thus, are cell autonomous. Functional electron microscopy reveals normal cristae density with decreased cytochrome oxidase activity. These data lead to the following surprising conclusions: (1) PGC-1s are in fact dispensable for baseline muscle function, mitochondrial content, and fiber typing, (2) endurance fatigue at low workloads is not limited by muscle mitochondrial capacity, and (3) mitochondrial content and cristae density can be dissociated from respiratory capacity.
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Affiliation(s)
- Glenn C Rowe
- Cardiovascular Institute, Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
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29
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Meng ZX, Li S, Wang L, Ko HJ, Lee Y, Jung DY, Okutsu M, Yan Z, Kim JK, Lin JD. Baf60c drives glycolytic metabolism in the muscle and improves systemic glucose homeostasis through Deptor-mediated Akt activation. Nat Med 2013; 19:640-5. [PMID: 23563706 PMCID: PMC3650110 DOI: 10.1038/nm.3144] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 02/04/2013] [Indexed: 12/04/2022]
Abstract
A shift from oxidative to glycolytic metabolism has been associated with skeletal muscle insulin resistance in type 2 diabetes1–5. However, whether this metabolic switch is deleterious or adaptive remains controversial6–8, in part due to limited understanding of the regulatory network that directs the metabolic and contractile specification of fast-twitch glycolytic muscle. Here we show that BAF60c, a transcriptional cofactor enriched in fast-twitch muscle, promotes a switch from oxidative to glycolytic myofiber type through Deptor-mediated AKT activation. Muscle-specific transgenic expression of BAF60c activates a program of molecular, metabolic, and contractile changes characteristic of glycolytic muscle. In addition, BAF60c is required for maintaining glycolytic capacity in adult skeletal muscle in vivo. BAF60c expression is significantly decreased in skeletal muscle from obese mice. Unexpectedly, transgenic activation of the glycolytic muscle program by BAF60c protects mice from diet-induced insulin resistance and glucose intolerance. Further mechanistic studies revealed that Deptor is induced by the BAF60c/Six4 transcriptional complex and mediates activation of AKT and glycolytic metabolism by BAF60c in a cell-autonomous manner. This work defines a fundamental mechanism underlying the specification of fast glycolytic muscle and illustrates that the oxidative to glycolytic metabolic shift in skeletal muscle is potentially adaptive and beneficial in the diabetic state.
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Affiliation(s)
- Zhuo-Xian Meng
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA
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Ruas JL, White JP, Rao RR, Kleiner S, Brannan KT, Harrison BC, Greene NP, Wu J, Estall JL, Irving BA, Lanza IR, Rasbach KA, Okutsu M, Nair KS, Yan Z, Leinwand LA, Spiegelman BM. A PGC-1α isoform induced by resistance training regulates skeletal muscle hypertrophy. Cell 2013; 151:1319-31. [PMID: 23217713 DOI: 10.1016/j.cell.2012.10.050] [Citation(s) in RCA: 471] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 06/30/2012] [Accepted: 10/26/2012] [Indexed: 01/02/2023]
Abstract
PGC-1α is a transcriptional coactivator induced by exercise that gives muscle many of the best known adaptations to endurance-type exercise but has no effects on muscle strength or hypertrophy. We have identified a form of PGC-1α (PGC-1α4) that results from alternative promoter usage and splicing of the primary transcript. PGC-1α4 is highly expressed in exercised muscle but does not regulate most known PGC-1α targets such as the mitochondrial OXPHOS genes. Rather, it specifically induces IGF1 and represses myostatin, and expression of PGC-1α4 in vitro and in vivo induces robust skeletal muscle hypertrophy. Importantly, mice with skeletal muscle-specific transgenic expression of PGC-1α4 show increased muscle mass and strength and dramatic resistance to the muscle wasting of cancer cachexia. Expression of PGC-1α4 is preferentially induced in mouse and human muscle during resistance exercise. These studies identify a PGC-1α protein that regulates and coordinates factors involved in skeletal muscle hypertrophy.
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Affiliation(s)
- Jorge L Ruas
- Department of Cell Biology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA.
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Haldar SM, Jeyaraj D, Anand P, Zhu H, Lu Y, Prosdocimo DA, Eapen B, Kawanami D, Okutsu M, Brotto L, Fujioka H, Kerner J, Rosca MG, McGuinness OP, Snow RJ, Russell AP, Gerber AN, Bai X, Yan Z, Nosek TM, Brotto M, Hoppel CL, Jain MK. Kruppel-like factor 15 regulates skeletal muscle lipid flux and exercise adaptation. Proc Natl Acad Sci U S A 2012; 109:6739-44. [PMID: 22493257 PMCID: PMC3340075 DOI: 10.1073/pnas.1121060109] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [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] [Indexed: 11/18/2022] Open
Abstract
The ability of skeletal muscle to enhance lipid utilization during exercise is a form of metabolic plasticity essential for survival. Conversely, metabolic inflexibility in muscle can cause organ dysfunction and disease. Although the transcription factor Kruppel-like factor 15 (KLF15) is an important regulator of glucose and amino acid metabolism, its endogenous role in lipid homeostasis and muscle physiology is unknown. Here we demonstrate that KLF15 is essential for skeletal muscle lipid utilization and physiologic performance. KLF15 directly regulates a broad transcriptional program spanning all major segments of the lipid-flux pathway in muscle. Consequently, Klf15-deficient mice have abnormal lipid and energy flux, excessive reliance on carbohydrate fuels, exaggerated muscle fatigue, and impaired endurance exercise capacity. Elucidation of this heretofore unrecognized role for KLF15 now implicates this factor as a central component of the transcriptional circuitry that coordinates physiologic flux of all three basic cellular nutrients: glucose, amino acids, and lipids.
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Affiliation(s)
- Saptarsi M Haldar
- Harrington Heart and Vascular Institute and Department of Medicine, Case Western Reserve University School of Medicine and University Hospitals Case Medical Center, Cleveland, OH 44106, USA.
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Okutsu M, Lira VA, Zhang M, Yan Z. Enhanced expression of EcSOD in skeletal muscle blocks chronic heart failure–induced muscle atrophy and exercise intolerance in mice. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1086.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mitsuharu Okutsu
- Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
- Department of MedicineUniversity of VirginiaCharlottesvilleVA
| | - Vitor A. Lira
- Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
- Department of MedicineUniversity of VirginiaCharlottesvilleVA
| | - Mei Zhang
- Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
- Department of MedicineUniversity of VirginiaCharlottesvilleVA
| | - Zhen Yan
- Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
- Department of MedicineUniversity of VirginiaCharlottesvilleVA
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Wada S, Kato Y, Okutsu M, Miyaki S, Suzuki K, Yan Z, Schiaffino S, Asahara H, Ushida T, Akimoto T. Translational suppression of atrophic regulators by microRNA-23a integrates resistance to skeletal muscle atrophy. J Biol Chem 2011; 286:38456-38465. [PMID: 21926429 DOI: 10.1074/jbc.m111.271270] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Muscle atrophy is caused by accelerated protein degradation and occurs in many pathological states. Two muscle-specific ubiquitin ligases, MAFbx/atrogin-1 and muscle RING-finger 1 (MuRF1), are prominently induced during muscle atrophy and mediate atrophy-associated protein degradation. Blocking the expression of these two ubiquitin ligases provides protection against muscle atrophy. Here we report that miR-23a suppresses the translation of both MAFbx/atrogin-1 and MuRF1 in a 3'-UTR-dependent manner. Ectopic expression of miR-23a is sufficient to protect muscles from atrophy in vitro and in vivo. Furthermore, miR-23a transgenic mice showed resistance against glucocorticoid-induced skeletal muscle atrophy. These data suggest that suppression of multiple regulators by a single miRNA can have significant consequences in adult tissues.
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Affiliation(s)
- Shogo Wada
- Division of Regenerative Medical Engineering, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Yoshio Kato
- Research Institute for Cell Engineering, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8562, Japan
| | - Mitsuharu Okutsu
- Institute for Biomedical Engineering Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, Shinjuku, Tokyo 162-0041, Japan; Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia 22908
| | - Shigeru Miyaki
- Department of Regenerative Biology and Medicine, National Research Institute for Child Health and Development, Setagaya, Tokyo 157-8535, Japan
| | - Katsuhiko Suzuki
- Institute for Biomedical Engineering Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, Shinjuku, Tokyo 162-0041, Japan; Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan
| | - Zhen Yan
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia 22908
| | | | - Hiroshi Asahara
- Department of Regenerative Biology and Medicine, National Research Institute for Child Health and Development, Setagaya, Tokyo 157-8535, Japan
| | - Takashi Ushida
- Division of Regenerative Medical Engineering, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Takayuki Akimoto
- Division of Regenerative Medical Engineering, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan; Institute for Biomedical Engineering Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, Shinjuku, Tokyo 162-0041, Japan; Venetian Institute of Molecular Medicine, 35129 Padova, Italy.
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Yan Z, Okutsu M, Akhtar YN, Lira VA. Regulation of exercise-induced fiber type transformation, mitochondrial biogenesis, and angiogenesis in skeletal muscle. J Appl Physiol (1985) 2010; 110:264-74. [PMID: 21030673 DOI: 10.1152/japplphysiol.00993.2010] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Skeletal muscle exhibits superb plasticity in response to changes in functional demands. Chronic increases of skeletal muscle contractile activity, such as endurance exercise, lead to a variety of physiological and biochemical adaptations in skeletal muscle, including mitochondrial biogenesis, angiogenesis, and fiber type transformation. These adaptive changes are the basis for the improvement of physical performance and other health benefits. This review focuses on recent findings in genetically engineered animal models designed to elucidate the mechanisms and functions of various signal transduction pathways and gene expression programs in exercise-induced skeletal muscle adaptations.
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Affiliation(s)
- Zhen Yan
- Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
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Lira VA, Okutsu M, Akhtar YN, Zhang M, Yan Z. Autophagy in Skeletal Muscle is Required for Exercise Training-Induced Improvement in Glucose Tolerance. Med Sci Sports Exerc 2010. [DOI: 10.1249/01.mss.0000389410.73450.71] [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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36
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Okutsu M, Lira VA, Zhang M, Yan Z. A functional role of superoxide dismutase 3 in nitric oxide‐mediated protection against catabolic wasting in skeletal muscle. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.lb672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Vitor A Lira
- University of Virginia School of MedicineCharlottesvilleVA
| | - Mei Zhang
- University of Virginia School of MedicineCharlottesvilleVA
| | - Zhen Yan
- University of Virginia School of MedicineCharlottesvilleVA
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37
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Lira VA, Okutsu M, Zhang M, Yan Z. Increased contractile acitivity induces autophagy in skeletal muscle. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.lb646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vitor A. Lira
- Department of Medicine
- Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
| | - Mitsuharu Okutsu
- Department of Medicine
- Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
| | - Mei Zhang
- Department of Medicine
- Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
| | - Zhen Yan
- Department of Medicine
- Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research CenterUniversity of VirginiaCharlottesvilleVA
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38
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Akhtar YN, Lira VA, Zhang M, Okutsu M, Hoehn KL, Yan Z. Genetic ablation of cyclophilin D, a component of the mitochondrial permeability transition pore, improves insulin sensitivity in high‐fat fed mice. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.lb626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | - Kyle L Hoehn
- Department of PharmacologyUniversity of VirginiaCharlottesvilleVA
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Geng T, Li P, Okutsu M, Yin X, Kwek J, Zhang M, Yan Z. PGC-1alpha plays a functional role in exercise-induced mitochondrial biogenesis and angiogenesis but not fiber-type transformation in mouse skeletal muscle. Am J Physiol Cell Physiol 2009; 298:C572-9. [PMID: 20032509 DOI: 10.1152/ajpcell.00481.2009] [Citation(s) in RCA: 175] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Endurance exercise stimulates peroxisome proliferator-activated receptor gamma coactivator-1alpha (PGC-1alpha) expression in skeletal muscle, and forced expression of PGC-1alpha changes muscle metabolism and exercise capacity in mice. However, it is unclear if PGC-1alpha is indispensible for endurance exercise-induced metabolic and contractile adaptations in skeletal muscle. In this study, we showed that endurance exercise-induced expression of mitochondrial enzymes (cytochrome oxidase IV and cytochrome c) and increases of platelet endothelial cell adhesion molecule-1 (PECAM-1, CD31)-positive endothelial cells in skeletal muscle, but not IIb-to-IIa fiber-type transformation, were significantly attenuated in muscle-specific Pgc-1alpha knockout mice. Interestingly, voluntary running effectively restored the compromised mitochondrial integrity and superoxide dismutase 2 (SOD2) protein expression in skeletal muscle in Pgc-1alpha knockout mice. Thus, PGC-1alpha plays a functional role in endurance exercise-induced mitochondrial biogenesis and angiogenesis, but not IIb-to-IIa fiber-type transformation in mouse skeletal muscle, and the improvement of mitochondrial morphology and antioxidant defense in response to endurance exercise may occur independently of PGC-1alpha function. We conclude that PGC-1alpha is required for complete skeletal muscle adaptations induced by endurance exercise in mice.
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Affiliation(s)
- Tuoyu Geng
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
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Ogawa K, Suzuki K, Okutsu M, Yamazaki K, Shinkai S. The association of elevated reactive oxygen species levels from neutrophils with low-grade inflammation in the elderly. Immun Ageing 2008; 5:13. [PMID: 18950479 PMCID: PMC2582223 DOI: 10.1186/1742-4933-5-13] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2008] [Accepted: 10/24/2008] [Indexed: 01/25/2023]
Abstract
Background Reactive oxygen species (ROS), including free radicals, oxygen ions, and peroxides, are implicated in cell damage. The objective of this study was to investigate whether the spontaneous production of ROS from neutrophils changes with age and is associated with the conventional inflammatory markers. Results Thirty-seven elderly subjects (median age, 87, range 70–95 years) and 22 young subjects (median age, 26, range 21–37 years) participated in this study. Circulating levels of C-reactive protein, serum amyloid A, tumor necrosis factor-α, interleukin (IL)-1, IL-6, IL-8, monocyte chemotactic protein-1, and heat shock protein (HSP)70 were measured with enzyme-linked immunosorbent assays. The N-formyl-methionyl-leucyl-phenylalanine and lipopolysaccharide-stimulated ROS of neutrophils were quantified by flow cytometry. Both spontaneous ROS production and circulating levels of inflammatory markers were higher in the elderly group than in the younger group. In addition, spontaneous ROS production by neutrophils was negatively associated with HSP70 in plasma. We could not find the association between spontaneous ROS production by neutrophils and the other inflammatory markers including cytokines. Conclusion The results suggest that spontaneous ROS production from neutrophils may increase with age and represent the different aspect of age-associated immune dysregulation.
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Affiliation(s)
- Kishiko Ogawa
- Faculty of Human Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama 359-1192, Japan.,Research Team for Social Participation and Health Promotion, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakaecho, Itabashi, Tokyo 173-0015, Japan
| | - Katsuhiko Suzuki
- Faculty of Human Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama 359-1192, Japan.,Faculty of Sports Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama 359-1192, Japan.,Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, 513 Wasedatsurumakicho Sinjuku, Tokyo 162-0041, Japan
| | - Mitsuharu Okutsu
- Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, 513 Wasedatsurumakicho Sinjuku, Tokyo 162-0041, Japan
| | - Kyoko Yamazaki
- Faculty of Human Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama 359-1192, Japan
| | - Shoji Shinkai
- Research Team for Social Participation and Health Promotion, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakaecho, Itabashi, Tokyo 173-0015, Japan
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Okutsu M, Suzuki K, Ishijima T, Peake J, Higuchi M. The effects of acute exercise-induced cortisol on CCR2 expression on human monocytes. Brain Behav Immun 2008; 22:1066-1071. [PMID: 18477503 DOI: 10.1016/j.bbi.2008.03.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2008] [Revised: 03/18/2008] [Accepted: 03/19/2008] [Indexed: 10/22/2022] Open
Abstract
CC-chemokine receptor 2 (CCR2) and its ligand, monocyte chemotactic protein-1 (MCP-1, also known as CCL2), are crucial for the recruitment of monocytes/macrophages to sites of inflammation. We conducted a series of experiments to investigate the relationship between stress, monocyte CCR2 expression and migration activity. First, we collected peripheral blood mononuclear cells (PBMC) from untrained subjects (n=8) and measured CCR2 expression on CD14(+) monocytes cultured with cortisol, epinephrine and norepinephrine. Second, we collected PBMC from the subjects before and after they cycled for 60 min at 70% peak O(2) uptake (VO2(peak)), and measured alterations in CCR2 expression on monocytes following exercise. Third, we cultured PBMC with serum obtained before and after exercise and the glucocorticoid antagonist RU-486 to determine the effect of cortisol on CCR2 expression in vitro. Last, we measured the ability of PBMC treated with serum or cortisol to migrate through membrane filters in response to CCL2. Cortisol (but not epinephrine or norepinephrine) increased CCR2 expression on monocytes in a dose- and time-dependent manner. Exercise did not influence CCR2 expression on PBMC, whereas incubation of PBMC with post-exercise serum significantly increased CCR2 expression. Both cortisol and post-exercise serum increased the migration of PBMC toward CCL2. The increase in CCR2 expression on PBMC following stimulation with cortisol and serum was blocked by the glucocorticoid receptor antagonist RU-486. In conclusion, cortisol released during exercise increased monocyte CCR2 expression and migration activity in vitro. These alterations may influence inflammation and regeneration of damaged tissue after acute stress.
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Affiliation(s)
- Mitsuharu Okutsu
- Institute for Biomedical Engineering, Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, Tokyo, Japan.
| | | | | | - Jonathan Peake
- School of Human Movement Studies, University of Queensland, Brisbane, Australia
| | - Mitsuru Higuchi
- Faculty of Sport Sciences, Waseda University, Saitama, Japan
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Okutsu M, Yoshida Y, Zhang X, Tamagawa A, Ohkubo T, Tsuji I, Nagatomi R. Exercise training enhances in vivo tuberculosis purified protein derivative response in the elderly. J Appl Physiol (1985) 2008; 104:1690-6. [DOI: 10.1152/japplphysiol.01044.2007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We investigated the effect of 25 wk of exercise training on in vivo immune measures that depend on T helper 1 (Th1) and T helper 2 (Th2) immune responses in the elderly as a substudy of a randomized controlled trial to investigate health benefits of regular exercise training for the elderly. Sixty-five healthy elderly volunteers were randomly assigned to either an exercise training group ( n = 32) or a sedentary control group ( n = 33). The area of skin reaction to purified protein derivative (PPD) of tuberculin that depends on Th1 activation and the concentrations of serum IgG subclasses and IgE were evaluated before and after 25-wk intervention. All participants completed 25 wk of training. Thirty-one participants of the exercise group and all control group underwent immunological analyses, but only 30 from the exercise group and 21 from the control group had the PPD skin reaction assessment. Repeated-measures ANOVA revealed a significant interaction between time and exercise intervention, which appeared as an enhanced skin reaction to tuberculin PPD ( P < 0.05) and a reduced serum IgG4 concentration, the production of which depends on Th2-dependent class switching ( P < 0.05), in the exercise group after 25 wk. No immune variables changed in the control group. These result supports the hypothesis that exercise training favors in vivo Th1 immune response in elderly persons.
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Shing CM, Peake J, Suzuki K, Okutsu M, Pereira R, Stevenson L, Jenkins DG, Coombes JS. Effects of bovine colostrum supplementation on immune variables in highly trained cyclists. J Appl Physiol (1985) 2006; 102:1113-22. [PMID: 17095643 DOI: 10.1152/japplphysiol.00553.2006] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [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: 11/22/2022] Open
Abstract
The aim of this study was to investigate the influence of low-dose bovine colostrum protein concentrate (CPC) supplementation on selected immune variables in cyclists. Twenty-nine highly trained male road cyclists completed an initial 40-km time trial (TT(40)) and were then randomly assigned to either a supplement (n = 14, 10 g bovine CPC/day) or placebo group (n = 15, 10 g whey protein concentrate/day). After 5 wk of supplementation, the cyclists completed a second TT(40). They then completed 5 consecutive days of high-intensity training (HIT) that included a TT(40), followed by a final TT(40) in the following week. Venous blood and saliva samples were collected immediately before and after each TT(40), and upper respiratory illness symptoms were recorded over the experimental period. Compared with the placebo group, bovine CPC supplementation significantly increased preexercise serum soluble TNF receptor 1 during the HIT period (bovine CPC = 882 +/- 233 pg/ml, placebo = 468 +/- 139 pg/ml; P = 0.039). Supplementation also suppressed the postexercise decrease in cytotoxic/suppressor T cells during the HIT period (bovine CPC = -1.0 +/- 2.7%, placebo = -9.2 +/- 2.8%; P = 0.017) and during the following week (bovine CPC = 1.4 +/- 2.9%, placebo = -8.2 +/- 2.8%; P = 0.004). Bovine CPC supplementation prevented a postexercise decrease in serum IgG(2) concentration at the end of the HIT period (bovine CPC = 4.8 +/- 6.8%, P = 0.88; placebo = -9.7 +/- 6.9%, P = 0.013). There was a trend toward reduced incidence of upper respiratory illness symptoms in the bovine CPC group (P = 0.055). In summary, low-dose bovine CPC supplementation modulates immune parameters during normal training and after an acute period of intense exercise, which may have contributed to the trend toward reduced upper respiratory illness in the bovine CPC group.
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Affiliation(s)
- Cecilia M Shing
- School of Human Movement Studies, The University of Queensland, St. Lucia, Queensland, Australia 4072.
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Suzuki K, Peake J, Nosaka K, Okutsu M, Abbiss CR, Surriano R, Bishop D, Quod MJ, Lee H, Martin DT, Laursen PB. Changes in markers of muscle damage, inflammation and HSP70 after an Ironman triathlon race. Eur J Appl Physiol 2006; 98:525-34. [PMID: 17031693 DOI: 10.1007/s00421-006-0296-4] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2006] [Indexed: 10/24/2022]
Abstract
We investigated the effects of an Ironman triathlon race on markers of muscle damage, inflammation and heat shock protein 70 (HSP70). Nine well-trained male triathletes (mean +/- SD age 34 +/- 5 years; VO(2peak) 66.4 ml kg(-1) min(-1)) participated in the 2004 Western Australia Ironman triathlon race (3.8 km swim, 180 km cycle, 42.2 km run). We assessed jump height, muscle strength and soreness, and collected venous blood samples 2 days before the race, within 30 min and 14-20 h after the race. Plasma samples were analysed for muscle proteins, acute phase proteins, cytokines, heat shock protein 70 (HSP70), and clinical biochemical variables related to dehydration, haemolysis, liver and renal functions. Muscular strength and jump height decreased significantly (P < 0.05) after the race, whereas muscle soreness and the plasma concentrations of muscle proteins increased. The cytokines interleukin (IL)-1 receptor antagonist, IL-6 and IL-10, and HSP70 increased markedly after the race, while IL-12p40 and granulocyte colony-stimulating factor (G-CSF) were also elevated. IL-4, IL-1beta and tumour necrosis factor-alpha did not change significantly, despite elevated C-reactive protein and serum amyloid protein A on the day after the race. Plasma creatinine, uric acid and total bilirubin concentrations and gamma-glutamyl transferase activity also changed after the race. In conclusion, despite evidence of muscle damage and an acute phase response after the race, the pro-inflammatory cytokine response was minimal and anti-inflammatory cytokines were induced. HSP70 is released into the circulation as a function of exercise duration.
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Affiliation(s)
- Katsuhiko Suzuki
- Faculty of Human Sciences, Waseda University, 2-579-15 Mikajima Saitama, Tokorozawa, Saitama, Japan.
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Shing C, Coombes J, Jenkins D, Peake J, Suzuki K, Okutsu M, Pereira R, Stevenson L. Effects of Bovine Colostrum Supplementation on Exercise Performance and Immune Parameters. Med Sci Sports Exerc 2006. [DOI: 10.1249/00005768-200605001-01215] [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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Okutsu M, Suzuki K, Ishijima T, Higuchi M, Higuchi M. Exercise- and/or Stress Hormones-Induced Expression of CC-Chemokine Receptor 2 on Monocytes. Med Sci Sports Exerc 2006. [DOI: 10.1249/00005768-200605001-02199] [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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Nagatomi R, Zhang X, Yamaguchi H, Okutsu M, Ishii K, Suzuki A, Ohtaki Y, Sagawa K, Inooka H. Validity of A Novel Portable Physical Activity Monitor with a 3D-Accelerometer and a Barometer. Med Sci Sports Exerc 2006. [DOI: 10.1249/00005768-200605001-03198] [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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Zhang X, Okutsu M, Kanemi O, Nagatomi R. Effect of foot shock stress on the interferon-gamma production of murine intestinal intraepithelial lymphocytes. Immunol Lett 2005; 100:170-6. [PMID: 16154496 DOI: 10.1016/j.imlet.2005.03.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2004] [Revised: 03/16/2005] [Accepted: 03/30/2005] [Indexed: 11/20/2022]
Abstract
To investigate the effect of stress on interferon (IFN)-gamma production by intestinal intraepithelial lymphocytes (IEL), we exposed male C3H/HeN mice to electric foot shock for 30 min a day for 5 consecutive days. Immediately after the final foot shock stress, IEL from small intestine were isolated by Percoll density gradient. The stress induced a marked suppression of IFN-gamma production by IEL stimulated with immobilized anti-CD3 mAb and a marked decrease in the proportion of IFN-gamma-producing CD3+ IEL or alphabetaTCR+ IEL stimulated with PMA+ionomycin. The alphabetaTCR+ subset was the major cause of stress-induced suppression of IFN-gamma production by IEL. Glucocorticoid induced the suppression of IFN-gamma production by IEL in vitro, which was reversed by mifepristone (RU486), a glucocorticoid receptor antagonist. In vivo administration of RU486 reversed the stress-induced suppression of IFN-gamma production by IEL. In conclusion, repeated foot shock stress suppressed IFN-gamma production of IEL by stress-induced elevation of endogenous glucocorticoid. Substantial suppression of the alphabetaTCR+ subset was the major cause of the suppression.
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MESH Headings
- Animals
- Corticosterone/blood
- Dexamethasone/blood
- Electroshock
- Immunophenotyping
- Interferon-gamma/biosynthesis
- Interferon-gamma/metabolism
- Intestinal Mucosa/drug effects
- Intestinal Mucosa/immunology
- Intestine, Small/immunology
- Ionomycin
- Ionophores
- Lymphocytes/drug effects
- Lymphocytes/immunology
- Male
- Mice
- Mice, Inbred C3H
- Mifepristone/administration & dosage
- Mifepristone/pharmacology
- Muromonab-CD3
- Receptors, Antigen, T-Cell, alpha-beta/analysis
- Receptors, Antigen, T-Cell, alpha-beta/immunology
- Receptors, Glucocorticoid/antagonists & inhibitors
- Stress, Physiological/etiology
- Stress, Physiological/immunology
- Tetradecanoylphorbol Acetate
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Affiliation(s)
- Xiumin Zhang
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, 980-8575 Sendai, Japan.
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Okutsu M, Ishii K, Niu KJ, Nagatomi R. Cortisol-induced CXCR4 augmentation mobilizes T lymphocytes after acute physical stress. Am J Physiol Regul Integr Comp Physiol 2005; 288:R591-9. [PMID: 15528395 DOI: 10.1152/ajpregu.00438.2004] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [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: 11/22/2022]
Abstract
The aim of this study was to elucidate the mechanism responsible for lymphopenia after exercise. Seven young healthy men volunteered for this study. Peripheral blood mononuclear cells (PBMC) were cultured with cortisol and analyzed for C-X-C motif chemokine receptor 4 (CXCR4) expression by flow cytometry. To determine the effects of exercise, subjects performed exhaustive cycling exercise. PBMC were cultured with plasma obtained before and after the cycling exercise. Alternatively, PBMC obtained before and after exercise were cultured without plasma or glucocorticoid to examine whether PBMC were primed in vivo for CXCR4 expression. We analyzed cortisol- or plasma-treated PBMC to determine their ability to migrate through membrane filters in response to stromal cell-derived factor 1α/CXCL12. Cortisol dose- and time-dependently augmented CXCR4 expression on T lymphocytes, with <6 h of treatment sufficient to augment CXCR4 on T lymphocytes. Postexercise plasma also augmented CXCR4 expression. Cortisol or postexercise plasma treatment markedly enhanced migration of T lymphocytes toward CXCL12. Augmentation of CXCR4 on T lymphocytes by cortisol or plasma was effectively blocked by the glucocorticoid receptor antagonist RU-486. Thus exercise-elicited endogenous cortisol effectively augments CXCR4 expression on T lymphocytes, which may account for lymphopenia after exercise.
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Affiliation(s)
- Mitsuharu Okutsu
- Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Seiryo-machi 2-1, Aoba-ku, Sendai, 980-8575 Japan
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Niu K, Hozawa A, Fujita K, Ohmori K, Okutsu M, Kuriyama S, Tsuji I, Nagatomi R. Influence of Leisure-Time Physical Activity on the Relationship between C-Reactive Protein and Hypertension in a Community-Based Elderly Population of Japan: The Tsurugaya Project. Hypertens Res 2005; 28:747-54. [PMID: 16419648 DOI: 10.1291/hypres.28.747] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [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: 11/15/2022]
Abstract
There are several studies indicating an association between C-reactive protein (CRP) and blood pressure (BP) in the Japanese population, but the influence of physical activity has not been considered. Therefore, we designed a cross-sectional survey to determine whether leisure-time physical activity (LTPA) modifies the relation between CRP and hypertension among Japanese elderly. Our study population comprised 643 subjects aged 70 years and over in whom CRP, home BP, and self-reported LTPA were measured. LPTA was categorized into three levels of intensity--walking, brisk walking, and sports-and a questionnaire was used to estimate the level in each patient. Hypertension was defined as a home systolic BP of 135 mmHg or over and/or home diastolic BP of 85 mmHg or over or current use of antihypertensive agents. LTPA levels were associated with both CRP and hypertension. After adjustment for factors affecting CRP and hypertension, and additional adjustment for LTPA levels, the odds ratio (95% confidence interval) of hypertension by CRP was 2.21 (range: 1.33-3.72), 1.99 (1.17-3.42), and 2.38 (1.36-4.21) times higher in subjects in the second, third, and fourth quartiles of CRP, as compared to subjects in the first quartile, respectively. A multiple regression model showed a positive and significant relation between log-transformed CRP and systolic BP after adjustment for potential confounding factors when participants taking antihypertensive medication were excluded. This is the first study to clarify that the positive significant relation between CRP and hypertension was independent of LTPA levels among Japanese elderly.
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Affiliation(s)
- Kaijun Niu
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan.
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