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Takemura A. Exposure to a mild hyperbaric oxygen environment elevates blood pressure. J Phys Ther Sci 2022; 34:360-364. [PMID: 35527838 PMCID: PMC9057685 DOI: 10.1589/jpts.34.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/01/2022] [Indexed: 11/24/2022] Open
Affiliation(s)
- Ai Takemura
- Department of Sports Research, Japan Institute of Sport Sciences, Japan
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Zhang L, Wang J, Zhao YT, Dubielecka P, Qin G, Zhuang S, Chin EY, Liu PY, Zhao TC. Deletion of PRAK Mitigates the Mitochondria Function and Suppresses Insulin Signaling in C2C12 Myoblasts Exposed to High Glucose. Front Pharmacol 2021; 12:698714. [PMID: 34671252 PMCID: PMC8521062 DOI: 10.3389/fphar.2021.698714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/20/2021] [Indexed: 11/13/2022] Open
Abstract
Background: p38 regulated/activated protein kinase (PRAK) plays a crucial role in modulating cell death and survival. However, the role of PRAK in the regulation of metabolic stress remains unclear. We examined the effects of PRAK on cell survival and mitochondrial function in C2C12 myoblasts in response to high glucose stresses. Methods: PRAK of C2C12 myoblasts was knocked out by using CRISPR/Cas-9 genome editing technology. Both wild type and PRAK−/− C2C12 cells were exposed to high glucose at the concentration of 30 mmol/L to induce metabolic stress. The effect of irisin, an adipomyokine, on both wild type and PRAK−/− cells was determined to explore its relationship with RPAK. Cell viability, ATP product, glucose uptake, mitochondrial damage, and insulin signaling were assessed. Results: PRAK knockout decreased C2C12 viability in response to high glucose stress as evident by MTT assay in association with the reduction of ATP and glucose uptake. PRAK knockout enhanced apoptosis of C2C12 myoblasts in response to high glucose, consistent with an impairment in mitochondrial function, by decreasing mitochondrial membrane potential. PRAK knockout induced impairment of mitochondrial and cell damage were rescued by irisin. PRAK knockout caused decrease in phosphorylated PI3 kinase at Tyr 485, IRS-1 and AMPKα and but did not affect non-phosphorylated PI3 kinase, IRS-1 and AMPKα signaling. High glucose caused the further reduction of phosphorylated PI3 kinase, IRS-1 and AMPKα. Irisin treatment preserved phosphorylated PI3 kinase, IRS-1by rescuing PRAK in high glucose treatment. Conclusion: Our finding indicates a pivotal role of PRAK in preserving cellular survival, mitochondrial function, and high glucose stress.
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Affiliation(s)
- Ling Zhang
- Department of Medicine, Rhode Island Hospital, Alpert Brown Medical School, Brown University, Providence, RI, United States
| | - Jianguo Wang
- Department of Surgery, Roger Williams Medical Center, Boston University School of Medicine, Boston, MA, United States
| | - Yu Tina Zhao
- University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Patrycja Dubielecka
- Department of Medicine, Rhode Island Hospital, Alpert Brown Medical School, Brown University, Providence, RI, United States
| | - Gangjian Qin
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Shougang Zhuang
- Department of Medicine, Rhode Island Hospital, Alpert Brown Medical School, Brown University, Providence, RI, United States
| | - Eugene Y Chin
- Institute of Health Sciences, Chinese Academy of Sciences-Jiaotong University School of Medicine, Shanghai, China
| | - Paul Y Liu
- Department of Surgery and Department of Plastic Surgery, Rhode Island Hospital, Brown University, Providence, RI, United States
| | - Ting C Zhao
- Department of Surgery, Roger Williams Medical Center, Boston University School of Medicine, Boston, MA, United States.,Department of Surgery and Department of Plastic Surgery, Rhode Island Hospital, Brown University, Providence, RI, United States
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Tanaka M, Kanazashi M, Matsumoto T, Kondo H, Ishihara A, Fujino H. Mild hyperbaric oxygen exposure attenuates rarefaction of capillary vessels in streptozotocin-induced diabetic soleus muscle in rats. Biomed Res 2021; 42:1-11. [PMID: 33563874 DOI: 10.2220/biomedres.42.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We examined the effects of mild hyperbaric oxygen (mHBO) exposure on capillary rarefaction in skeletal muscles of rats with diabetes. Streptozotocin (100 mg/kg) was administered to male Wistar rats via the tail vein to prepare a diabetic model. These rats were divided into 2 groups: the group with mHBO exposure (1.25 atmospheres absolute (ATA) with 36% oxygen; 3 h/day) and the group without mHBO exposure. Age-matched rats were used as the control group. Eight weeks later, the soleus of the rats was removed and then analyzed. With the onset of diabetes mellitus, capillary number, diameter, and volume in the soleus of the rats with diabetes decreased compared with those of the rats in the control group. In addition, increased anti-angiogenic thrombospondin-1 (TSP-1) and decreased pro-angiogenic murine double minute 2 (MDM-2) protein expressions were observed in the rats with diabetes. Alternatively, mHBO exposure attenuated the decrease in capillary diameter and volume in skeletal muscles of rats with diabetes, suppressed the overexpression of TSP-1, and restored the MDM-2 expression. These results indicate the exposure of mHBO partially attenuates capillary rarefaction in diabetic soleus muscle.
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Affiliation(s)
- Masayuki Tanaka
- Department of Physical Therapy, Faculty of Health Sciences, Okayama Healthcare Professional University
| | - Miho Kanazashi
- Department of Physical Therapy, Faculty of Health and Welfare, Prefectural University of Hiroshima
| | - Tomohiro Matsumoto
- Department of Muscle Development and Regeneration, Institute of Molecular Embryology and Genetics, Kumamoto University
| | - Hiroyo Kondo
- Department of Food Science and Nutrition, Nagoya Women's University.,Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences
| | - Akihiko Ishihara
- Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University
| | - Hidemi Fujino
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences
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Yano N, Zhang L, Wei D, Dubielecka PM, Wei L, Zhuang S, Zhu P, Qin G, Liu PY, Chin YE, Zhao TC. Irisin counteracts high glucose and fatty acid-induced cytotoxicity by preserving the AMPK-insulin receptor signaling axis in C2C12 myoblasts. Am J Physiol Endocrinol Metab 2020; 318:E791-E805. [PMID: 32182124 PMCID: PMC7272726 DOI: 10.1152/ajpendo.00219.2019] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Irisin, a newly identified myokine, is critical to modulating body metabolism and biological homeostasis. However, whether irisin protects the skeletal muscles against metabolic stresses remains unknown. In this study, we determine the effect of irisin on high glucose and fatty acid-induced damages using irisin-overexpressed mouse C2C12 (irisin-C2C12) myoblasts and skeletal muscle from irisin-injected mice. Compared with empty vector-transfected control C2C12 cells, irisin overexpression resulted in a marked increase in cell viability and decrease in apoptosis under high-glucose stress. Progression of the cell cycle into the G2/M phase in the proliferative condition was also observed with irisin overexpression. Furthermore, glucose uptake, glycogen accumulation, and phosphorylation of AMPKα/insulin receptor (IR) β-subunit/Erk1/2 in response to insulin stimulation were enhanced by irisin overexpression. In irisin-C2C12 myoblasts, these responses of phosphorylation were preserved under palmitate treatment, which induced insulin resistance in the control cells. These effects of irisin were reversed by inhibiting AMPK with compound C. In addition, high glucose-induced suppression of the mitochondrial membrane potential was also prevented by irisin. Moreover, suppression of IR in irisin-C2C12 myoblasts by cotransfection of shRNA against IR also mitigated the effects of irisin while not affecting AMPKα phosphorylation. As an in vivo study, soleus muscles from irisin-injected mice showed elevated phosphorylation of AMPKα and Erk1/2 and glycogen contents. Our results indicate that irisin counteracts the stresses generated by high glucose and fatty acid levels and irisin overexpression serves as a novel approach to elicit cellular protection. Furthermore, AMPK activation is a crucial factor that regulates insulin action as a downstream target.
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Affiliation(s)
- Naohiro Yano
- Department of Surgery, Boston University School of Medicine, Roger Williams Medical Center, Providence, Rhode Island
| | - Ling Zhang
- Department of Medicine, Rhode Island Hospital, Brown University, Providence, Rhode Island
| | - Dennis Wei
- Department of Surgery, Boston University School of Medicine, Roger Williams Medical Center, Providence, Rhode Island
| | - Patrycja M Dubielecka
- Department of Medicine, Rhode Island Hospital, Brown University, Providence, Rhode Island
| | - Lei Wei
- Department of Orthopedics, Rhode Island Hospital, Brown University, Providence, Rhode Island
| | - Shougang Zhuang
- Department of Medicine, Rhode Island Hospital, Brown University, Providence, Rhode Island
| | - Ping Zhu
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Science, Guangzhou, China
| | - Gangjian Qin
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, Alabama
| | - Paul Y Liu
- Plastic Surgery, Rhode Island Hospital, Brown University, Providence, Rhode Island
| | - Y Eugene Chin
- Translation Medicine Center, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Ting C Zhao
- Department of Surgery, Boston University School of Medicine, Roger Williams Medical Center, Providence, Rhode Island
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Yuan J, Jiang Q, Song L, Liu Y, Li M, Lin Q, Li Y, Su K, Ma Z, Wang Y, Liu D, Dong J. L-Carnitine Is Involved in Hyperbaric Oxygen-Mediated Therapeutic Effects in High Fat Diet-Induced Lipid Metabolism Dysfunction. Molecules 2020; 25:molecules25010176. [PMID: 31906305 PMCID: PMC6982999 DOI: 10.3390/molecules25010176] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/14/2019] [Accepted: 12/25/2019] [Indexed: 11/16/2022] Open
Abstract
Lipid metabolism dysfunction and obesity are serious health issues to human beings. The current study investigated the effects of hyperbaric oxygen (HBO) against high fat diet (HFD)-induced lipid metabolism dysfunction and the roles of L-carnitine. C57/B6 mice were fed with HFD or normal chew diet, with or without HBO treatment. Histopathological methods were used to assess the adipose tissues, serum free fatty acid (FFA) levels were assessed with enzymatic methods, and the endogenous circulation and skeletal muscle L-carnitine levels were assessed with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Additionally, western blotting was used to assess the expression levels of PPARα, CPT1b, pHSL/HSL, and UCP1. HFD treatment increased body/adipose tissue weight, serum FFA levels, circulation L-carnitines and decreased skeletal muscle L-carnitine levels, while HBO treatment alleviated such changes. Moreover, HFD treatment increased fatty acid deposition in adipose tissues and decreased the expression of HSL, while HBO treatment alleviated such changes. Additionally, HFD treatment decreased the expression levels of PPARα and increased those of CPT1b in skeletal muscle, while HBO treatment effectively reverted such changes as well. In brown adipose tissues, HFD increased the expression of UCP1 and the phosphorylation of HSL, which was abolished by HBO treatment as well. In summary, HBO treatment may alleviate HFD-induced fatty acid metabolism dysfunction in C57/B6 mice, which seems to be associated with circulation and skeletal muscle L-carnitine levels and PPARα expression.
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Affiliation(s)
- Junhua Yuan
- Department of Specialty Medicine, School of Basic Medicine, Qingdao University, Qingdao 266071, China; (J.Y.); (L.S.); (Y.L.); (M.L.); (Q.L.)
| | - Qixiao Jiang
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao 266071, China
- Correspondence: (Q.J.); (J.D.); Tel.: +86-18300267138 (Q.J.); +86-0532-83780035 (J.D.)
| | - Limin Song
- Department of Specialty Medicine, School of Basic Medicine, Qingdao University, Qingdao 266071, China; (J.Y.); (L.S.); (Y.L.); (M.L.); (Q.L.)
| | - Yuan Liu
- Department of Specialty Medicine, School of Basic Medicine, Qingdao University, Qingdao 266071, China; (J.Y.); (L.S.); (Y.L.); (M.L.); (Q.L.)
| | - Manwen Li
- Department of Specialty Medicine, School of Basic Medicine, Qingdao University, Qingdao 266071, China; (J.Y.); (L.S.); (Y.L.); (M.L.); (Q.L.)
| | - Qian Lin
- Department of Specialty Medicine, School of Basic Medicine, Qingdao University, Qingdao 266071, China; (J.Y.); (L.S.); (Y.L.); (M.L.); (Q.L.)
| | - Yanrun Li
- Department of Clinical Medicine, Medical Collage, Qingdao University, Qingdao 266071, China; (Y.L.); (K.S.); (Z.M.); (Y.W.); (D.L.)
| | - Kaizhen Su
- Department of Clinical Medicine, Medical Collage, Qingdao University, Qingdao 266071, China; (Y.L.); (K.S.); (Z.M.); (Y.W.); (D.L.)
| | - Zhengye Ma
- Department of Clinical Medicine, Medical Collage, Qingdao University, Qingdao 266071, China; (Y.L.); (K.S.); (Z.M.); (Y.W.); (D.L.)
| | - Yifei Wang
- Department of Clinical Medicine, Medical Collage, Qingdao University, Qingdao 266071, China; (Y.L.); (K.S.); (Z.M.); (Y.W.); (D.L.)
| | - Defeng Liu
- Department of Clinical Medicine, Medical Collage, Qingdao University, Qingdao 266071, China; (Y.L.); (K.S.); (Z.M.); (Y.W.); (D.L.)
| | - Jing Dong
- Department of Specialty Medicine, School of Basic Medicine, Qingdao University, Qingdao 266071, China; (J.Y.); (L.S.); (Y.L.); (M.L.); (Q.L.)
- Department of Physiology, School of Basic Medicine, Qingdao University, Qingdao 266071, China
- Correspondence: (Q.J.); (J.D.); Tel.: +86-18300267138 (Q.J.); +86-0532-83780035 (J.D.)
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Abstract
Adequate oxygen supply by exposure to mild hyperbaric oxygen at appropriately high atmospheric pressure (1266-1317 hPa) and increased oxygen concentration (35-40% oxygen) has a possibility of improving the oxidative metabolism in cells and tissues without barotrauma and excessive production of reactive oxygen species. Therefore, metabolic syndrome and lifestyle-related diseases, including type 2 diabetes and hypertension, in rats were inhibited and/or improved by exposure to mild hyperbaric oxygen. It accelerated the growth-induced increase in oxidative capacity of the skeletal muscle in rats and inhibited the age-related decrease in oxidative capacity of the skeletal muscle in mice. A decrease in dopaminergic neurons in the substantia nigra of mice with Parkinson's disease was inhibited by exposure to mild hyperbaric oxygen. This review describes the beneficial effects of exposure to mild hyperbaric oxygen on some metabolic diseases and their perspectives.
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Affiliation(s)
- Akihiko Ishihara
- Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan.
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