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Correia J, Estevinho MM, Mesquita P, Gomes LC, Silva AP, Fernandes S, Rodrigues J, Afecto E, Freitas T. Are sarcopenia, frailty and malnutrition prognostic markers of liver disease decompensation in the ambulatory setting? - A prospective cohort study. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS 2024; 116:250-257. [PMID: 38095223 DOI: 10.17235/reed.2023.9907/2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
BACKGROUND sarcopenia, frailty and malnutrition are associated with adverse outcomes in liver cirrhosis. Studies assessing the prognostic value of these conditions in ambulatory patients with cirrhosis are scarce. METHODS a prospective cohort study was performed, with consecutive inclusion of all patients with cirrhosis observed in the Hepatology outpatient clinic of a Portuguese tertiary center. At study enrolment, evaluation of muscle mass (ultrasound quadriceps femoris thickness), muscle strength (handgrip dynamometry) and nutritional status (Patient-Generated Subjective Global Assessment Short Form) were performed. Follow-up ended upon the occurrence of a composite endpoint, comprising of liver decompensation events and liver-related death, or last medical appointment/non-liver related death before the end of the study. The prognostic value of anthropometrical parameters and nutritional status in the composite endpoint was assessed using a multivariate Cox regression analysis, adjusted for several confounders. RESULTS ninety patients were enrolled (80 % male), with a mean age of 63.5 ± 10.5 years. The median follow-up was 30 (interquartile range 38) weeks, during which, 12 patients reached the composite endpoint. These patients presented a lower mean handgrip strength (23.1 ± 6.41 vs 30.3 ± 10.4 kg, p = 0.04) compared to patients who did not reach the composite endpoint. However, Cox regression multivariate analysis did not find any independent predictors of the composite endpoint, apart from previous decompensation episodes. CONCLUSION in this study, muscle strength was lower in the group of patients with cirrhosis who presented a liver-related event. Handgrip strength might be a promising tool in the ambulatory setting to identify patients at risk of liver decompensation and liver-related death in the short term.
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Affiliation(s)
- João Correia
- Gastrenterology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
| | | | - Pedro Mesquita
- Gastroenterology, Centro Hospitalar Vila Nova de Gaia/Espinho
| | - Luís Correia Gomes
- Gastroenterology, Instituto Português de Oncologia de Lisboa Francisco Gentil
| | - Ana Paula Silva
- Gastroenterology, Centro Hospitalar Vila Nova de Gaia/Espinho
| | - Sónia Fernandes
- Gastroenterology, Centro Hospitalar Vila Nova de Gaia/Espinho
| | - Jaime Rodrigues
- Gastroenterology, Centro Hospitalar Vila Nova de Gaia/Espinho
| | - Edgar Afecto
- Gastroenterology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
| | - Teresa Freitas
- Gastroenterology, Centro Hospitalar Vila Nova de Gaia/Espinho
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2
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Xiong W, Ye Y, He D, He S, Xiang Y, Xiao J, Feng W, Wu M, Yang Z, Wang D. Deregulation of Ribosome Biogenesis in Nitrite-Oxidizing Bacteria Leads to Nitrite Accumulation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:16673-16684. [PMID: 37862695 DOI: 10.1021/acs.est.3c06002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
Nitrite (NO2-) accumulation caused by nitrite-oxidizing bacteria (NOB) inhibition in nitrification is a double-edged sword, i.e., a disaster in aquatic environments but a hope for innovating nitrogen removal technology in wastewater treatment. However, little information is available regarding the molecular mechanism of NOB inhibition at the cellular level. Herein, we investigate the response of NOB inhibition on NO2- accumulation established by a side-stream free ammonia treatment unit in a nitrifying reactor using integrated metagenomics and metaproteomics. Results showed that compared with the baseline, the relative abundance and activity of NOB in the experimental stage decreased by 91.64 and 68.66%, respectively, directly resulting in a NO2- accumulation rate of 88%. Moreover, RNA polymerase, translation factors, and aa-tRNA ligase were significantly downregulated, indicating that protein synthesis in NOB was interfered during NO2- accumulation. Further investigations showed that ribosomal proteins and GTPases, responsible for bindings between either ribosomal proteins and rRNA or ribosome subunits, were remarkably downregulated. This suggests that ribosome biogenesis was severely disrupted, which might be the key reason for the inhibited protein synthesis. Our findings fill a knowledge gap regarding the underlying mechanisms of NO2- accumulation, which would be beneficial for regulating the accumulation of NO2- in aquatic environments and engineered systems.
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Affiliation(s)
- Weiping Xiong
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Yuhang Ye
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Dandan He
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Siying He
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Yinping Xiang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Jun Xiao
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Wenyi Feng
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Mengru Wu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Zhaohui Yang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Dongbo Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
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3
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Lu Y, Wang S, Jiao Y. The Effects of Deregulated Ribosomal Biogenesis in Cancer. Biomolecules 2023; 13:1593. [PMID: 38002277 PMCID: PMC10669593 DOI: 10.3390/biom13111593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/04/2023] [Accepted: 10/22/2023] [Indexed: 11/26/2023] Open
Abstract
Ribosomes are macromolecular ribonucleoprotein complexes assembled from RNA and proteins. Functional ribosomes arise from the nucleolus, require ribosomal RNA processing and the coordinated assembly of ribosomal proteins (RPs), and are frequently hyperactivated to support the requirement for protein synthesis during the self-biosynthetic and metabolic activities of cancer cells. Studies have provided relevant information on targeted anticancer molecules involved in ribosome biogenesis (RiBi), as increased RiBi is characteristic of many types of cancer. The association between unlimited cell proliferation and alterations in specific steps of RiBi has been highlighted as a possible critical driver of tumorigenesis and metastasis. Thus, alterations in numerous regulators and actors involved in RiBi, particularly in cancer, significantly affect the rate and quality of protein synthesis and, ultimately, the transcriptome to generate the associated proteome. Alterations in RiBi in cancer cells activate nucleolar stress response-related pathways that play important roles in cancer-targeted interventions and immunotherapies. In this review, we focus on the association between alterations in RiBi and cancer. Emphasis is placed on RiBi deregulation and its secondary consequences, including changes in protein synthesis, loss of RPs, adaptive transcription and translation, nucleolar stress regulation, metabolic changes, and the impaired ribosome biogenesis checkpoint.
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Affiliation(s)
| | - Shizhuo Wang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110055, China;
| | - Yisheng Jiao
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110055, China;
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Mishra S, Welch N, Karthikeyan M, Bellar A, Musich R, Singh SS, Zhang D, Sekar J, Attaway A, Chelluboyina AK, Lorkowski SW, Roychowdhury S, Li L, Willard B, Smith JD, Hoppel C, Vachharajani V, Kumar A, Dasarathy S. Dysregulated cellular redox status during hyperammonemia causes mitochondrial dysfunction and senescence by inhibiting sirtuin-mediated deacetylation. Aging Cell 2023; 22:e13852. [PMID: 37101412 PMCID: PMC10352558 DOI: 10.1111/acel.13852] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 04/28/2023] Open
Abstract
Perturbed metabolism of ammonia, an endogenous cytotoxin, causes mitochondrial dysfunction, reduced NAD+ /NADH (redox) ratio, and postmitotic senescence. Sirtuins are NAD+ -dependent deacetylases that delay senescence. In multiomics analyses, NAD metabolism and sirtuin pathways are enriched during hyperammonemia. Consistently, NAD+ -dependent Sirtuin3 (Sirt3) expression and deacetylase activity were decreased, and protein acetylation was increased in human and murine skeletal muscle/myotubes. Global acetylomics and subcellular fractions from myotubes showed hyperammonemia-induced hyperacetylation of cellular signaling and mitochondrial proteins. We dissected the mechanisms and consequences of hyperammonemia-induced NAD metabolism by complementary genetic and chemical approaches. Hyperammonemia inhibited electron transport chain components, specifically complex I that oxidizes NADH to NAD+ , that resulted in lower redox ratio. Ammonia also caused mitochondrial oxidative dysfunction, lower mitochondrial NAD+ -sensor Sirt3, protein hyperacetylation, and postmitotic senescence. Mitochondrial-targeted Lactobacillus brevis NADH oxidase (MitoLbNOX), but not NAD+ precursor nicotinamide riboside, reversed ammonia-induced oxidative dysfunction, electron transport chain supercomplex disassembly, lower ATP and NAD+ content, protein hyperacetylation, Sirt3 dysfunction and postmitotic senescence in myotubes. Even though Sirt3 overexpression reversed ammonia-induced hyperacetylation, lower redox status or mitochondrial oxidative dysfunction were not reversed. These data show that acetylation is a consequence of, but is not the mechanism of, lower redox status or oxidative dysfunction during hyperammonemia. Targeting NADH oxidation is a potential approach to reverse and potentially prevent ammonia-induced postmitotic senescence in skeletal muscle. Since dysregulated ammonia metabolism occurs with aging, and NAD+ biosynthesis is reduced in sarcopenia, our studies provide a biochemical basis for cellular senescence and have relevance in multiple tissues.
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Affiliation(s)
- Saurabh Mishra
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Nicole Welch
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
- Departments of Gastroenterology and HepatologyCleveland ClinicClevelandOhioUSA
| | - Manikandan Karthikeyan
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Annette Bellar
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Ryan Musich
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Shashi Shekhar Singh
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Dongmei Zhang
- Proteomics and Metabolomics coreLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Jinendiran Sekar
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Amy H. Attaway
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
- Departments of Pulmonary MedicineCleveland ClinicClevelandOhioUSA
| | - Aruna Kumar Chelluboyina
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Shuhui Wang Lorkowski
- Cardiovascular and Metabolic SciencesLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Sanjoy Roychowdhury
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Ling Li
- Proteomics and Metabolomics coreLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Belinda Willard
- Proteomics and Metabolomics coreLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Jonathan D. Smith
- Cardiovascular and Metabolic SciencesLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Charles L. Hoppel
- Department of PharmacologyCase Western Reserve University School of MedicineClevelandOhioUSA
| | - Vidula Vachharajani
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
- Critical Care Medicine, Respiratory Institute, Cleveland ClinicClevelandOhioUSA
| | - Avinash Kumar
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Srinivasan Dasarathy
- Department of Inflammation and ImmunityLerner Research Institute, Cleveland ClinicClevelandOhioUSA
- Departments of Gastroenterology and HepatologyCleveland ClinicClevelandOhioUSA
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5
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Tandon P, Zanetto A, Piano S, Heimbach JK, Dasarathy S. Liver transplantation in the patient with physical frailty. J Hepatol 2023; 78:1105-1117. [PMID: 37208097 PMCID: PMC10825673 DOI: 10.1016/j.jhep.2023.03.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/23/2023] [Accepted: 03/26/2023] [Indexed: 05/21/2023]
Abstract
Frailty is a decline in functional reserve across multiple physiological systems. A key component of frailty is sarcopenia, which denotes a loss of skeletal muscle mass and impaired contractile function that ultimately result in physical frailty. Physical frailty/sarcopenia are frequent and contribute to adverse clinical outcomes before and after liver transplantation. Frailty indices, including the liver frailty index, focus on contractile dysfunction (physical frailty), while cross-sectional image analysis of muscle area is the most accepted and reproducible measure to define sarcopenia. Thus, physical frailty and sarcopenia are interrelated. The prevalence of physical frailty/sarcopenia is high in liver transplant candidates and these conditions have been shown to adversely impact clinical outcomes including mortality, hospitalisations, infections, and cost of care both before and after transplantation. Data on the prevalence of frailty/sarcopenia and their sex- and age-dependent impact on outcomes are not consistent in patients on the liver transplant waitlist. Physical frailty and sarcopenic obesity are frequent in the obese patient with cirrhosis, and adversely affect outcomes after liver transplantation. Nutritional interventions and physical activity remain the mainstay of management before and after transplantation, despite limited data from large scale trials. In addition to physical frailty, there is recognition that a global evaluation including a multidisciplinary approach to other components of frailty (e.g., cognition, emotional, psychosocial) also need to be addressed in patients on the transplant waitlist. Recent advances in our understanding of the underlying mechanisms of sarcopenia and contractile dysfunction have helped identify novel therapeutic targets.
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Affiliation(s)
- Puneeta Tandon
- Division of Gastroenterology (Liver Unit), Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Alberto Zanetto
- Gastroenterology and Multivisceral Transplant Unit, Department of Surgery, Oncology, and Gastroenterology, Padova University Hospital, Italy
| | - Salvatore Piano
- Unit of Internal Medicine and Hepatology, Department of Medicine - DIMED, University and Hospital of Padova, Padova, Italy
| | - Julie K Heimbach
- William J von Liebig Transplant Center Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
| | - Srinivasan Dasarathy
- Division of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH 44195, USA
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6
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Welch N, Singh SS, Musich R, Mansuri MS, Bellar A, Mishra S, Chelluboyina AK, Sekar J, Attaway AH, Li L, Willard B, Hornberger TA, Dasarathy S. Shared and unique phosphoproteomics responses in skeletal muscle from exercise models and in hyperammonemic myotubes. iScience 2022; 25:105325. [PMID: 36345342 PMCID: PMC9636548 DOI: 10.1016/j.isci.2022.105325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 08/22/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022] Open
Abstract
Skeletal muscle generation of ammonia, an endogenous cytotoxin, is increased during exercise. Perturbations in ammonia metabolism consistently occur in chronic diseases, and may blunt beneficial skeletal muscle molecular responses and protein homeostasis with exercise. Phosphorylation of skeletal muscle proteins mediates cellular signaling responses to hyperammonemia and exercise. Comparative bioinformatics and machine learning-based analyses of published and experimentally derived phosphoproteomics data identified differentially expressed phosphoproteins that were unique and shared between hyperammonemic murine myotubes and skeletal muscle from exercise models. Enriched processes identified in both hyperammonemic myotubes and muscle from exercise models with selected experimental validation included protein kinase A (PKA), calcium signaling, mitogen-activated protein kinase (MAPK) signaling, and protein homeostasis. Our approach of feature extraction from comparative untargeted "omics" data allows for selection of preclinical models that recapitulate specific human exercise responses and potentially optimize functional capacity and skeletal muscle protein homeostasis with exercise in chronic diseases.
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Affiliation(s)
- Nicole Welch
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
- Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Shashi Shekhar Singh
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Ryan Musich
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - M. Shahid Mansuri
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA
| | - Annette Bellar
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Saurabh Mishra
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | | | - Jinendiran Sekar
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Amy H. Attaway
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Ling Li
- Proteomics Core, Cleveland Clinic, Cleveland, OH 44195, USA
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706, USA
| | - Belinda Willard
- Proteomics Core, Cleveland Clinic, Cleveland, OH 44195, USA
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706, USA
| | - Troy A. Hornberger
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706, USA
| | - Srinivasan Dasarathy
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH 44195, USA
- Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH 44195, USA
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7
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Allen SL, Seabright AP, Quinlan JI, Dhaliwal A, Williams FR, Fine NHF, Hodson DJ, Armstrong MJ, Elsharkaway AM, Greig CA, Lai YC, Lord JM, Lavery GG, Breen L. The Effect of Ex Vivo Human Serum from Liver Disease Patients on Cellular Protein Synthesis and Growth. Cells 2022; 11:cells11071098. [PMID: 35406665 PMCID: PMC8997893 DOI: 10.3390/cells11071098] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/14/2022] [Accepted: 03/22/2022] [Indexed: 02/04/2023] Open
Abstract
Sarcopenia is a common complication affecting liver disease patients, yet the underlying mechanisms remain unclear. We aimed to elucidate the cellular mechanisms that drive sarcopenia progression using an in vitro model of liver disease. C2C12 myotubes were serum and amino acid starved for 1-h and subsequently conditioned with fasted ex vivo serum from four non-cirrhotic non-alcoholic fatty liver disease patients (NAFLD), four decompensated end-stage liver disease patients (ESLD) and four age-matched healthy controls (CON) for 4- or 24-h. After 4-h C2C12 myotubes were treated with an anabolic stimulus (5 mM leucine) for 30-min. Myotube diameter was reduced following treatment with serum from ESLD compared with CON (−45%) and NAFLD (−35%; p < 0.001 for both). A reduction in maximal mitochondrial respiration (24% and 29%, respectively), coupling efficiency (~12%) and mitophagy (~13%) was identified in myotubes conditioned with NAFLD and ESLD serum compared with CON (p < 0.05 for both). Myostatin (43%, p = 0.04) and MuRF-1 (41%, p = 0.03) protein content was elevated in myotubes treated with ESLD serum compared with CON. Here we highlight a novel, experimental platform to further probe changes in circulating markers associated with liver disease that may drive sarcopenia and develop targeted therapeutic interventions.
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Affiliation(s)
- Sophie L. Allen
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham B15 2TT, UK; (S.L.A.); (A.P.S.); (J.I.Q.); (C.A.G.); (Y.-C.L.)
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
| | - Alex P. Seabright
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham B15 2TT, UK; (S.L.A.); (A.P.S.); (J.I.Q.); (C.A.G.); (Y.-C.L.)
| | - Jonathan I. Quinlan
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham B15 2TT, UK; (S.L.A.); (A.P.S.); (J.I.Q.); (C.A.G.); (Y.-C.L.)
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
| | - Amritpal Dhaliwal
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
- Liver Unit, Queen Elizabeth Hospital Birmingham, Nuffield House, Mindelsohn Way, Birmingham B15 2TH, UK
| | - Felicity R. Williams
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
- Liver Unit, Queen Elizabeth Hospital Birmingham, Nuffield House, Mindelsohn Way, Birmingham B15 2TH, UK
| | - Nicholas H. F. Fine
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham B15 2TT, UK; (N.H.F.F.); (D.J.H.)
| | - David J. Hodson
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham B15 2TT, UK; (N.H.F.F.); (D.J.H.)
- Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham B15 2TT, UK
- Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), NIHR Oxford Biomedical Research Centre, Churchill Hosptial, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 7LE, UK
| | - Matthew J. Armstrong
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
- Liver Unit, Queen Elizabeth Hospital Birmingham, Nuffield House, Mindelsohn Way, Birmingham B15 2TH, UK
| | - Ahmed M. Elsharkaway
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
- Liver Unit, Queen Elizabeth Hospital Birmingham, Nuffield House, Mindelsohn Way, Birmingham B15 2TH, UK
| | - Carolyn A. Greig
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham B15 2TT, UK; (S.L.A.); (A.P.S.); (J.I.Q.); (C.A.G.); (Y.-C.L.)
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham B15 2TT, UK
| | - Yu-Chiang Lai
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham B15 2TT, UK; (S.L.A.); (A.P.S.); (J.I.Q.); (C.A.G.); (Y.-C.L.)
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham B15 2TT, UK; (N.H.F.F.); (D.J.H.)
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham B15 2TT, UK
| | - Janet M. Lord
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham B15 2TT, UK
| | - Gareth G. Lavery
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
- Department of Biosciences, Nottingham Trent University, Nottingham NG1 8NS, UK
| | - Leigh Breen
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham B15 2TT, UK; (S.L.A.); (A.P.S.); (J.I.Q.); (C.A.G.); (Y.-C.L.)
- National Institute for Health Research, Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TT, UK; (A.D.); (F.R.W.); (M.J.A.); (A.M.E.); (J.M.L.); (G.G.L.)
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham B15 2TT, UK
- Correspondence:
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8
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Kumar A, Welch N, Mishra S, Bellar A, Silva RN, Li L, Singh SS, Sharkoff M, Kerr A, Chelluboyina AK, Sekar J, Attaway AH, Hoppel C, Willard B, Davuluri G, Dasarathy S. Metabolic reprogramming during hyperammonemia targets mitochondrial function and postmitotic senescence. JCI Insight 2021; 6:154089. [PMID: 34935641 PMCID: PMC8783680 DOI: 10.1172/jci.insight.154089] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 11/03/2021] [Indexed: 12/27/2022] Open
Abstract
Ammonia is a cytotoxic metabolite with pleiotropic molecular and metabolic effects, including senescence induction. During dysregulated ammonia metabolism, which occurs in chronic diseases, skeletal muscle becomes a major organ for nonhepatocyte ammonia uptake. Muscle ammonia disposal occurs in mitochondria via cataplerosis of critical intermediary metabolite α-ketoglutarate, a senescence-ameliorating molecule. Untargeted and mitochondrially targeted data were analyzed by multiomics approaches. These analyses were validated experimentally to dissect the specific mitochondrial oxidative defects and functional consequences, including senescence. Responses to ammonia lowering in myotubes and in hyperammonemic portacaval anastomosis rat muscle were studied. Whole-cell transcriptomics integrated with whole-cell, mitochondrial, and tissue proteomics showed distinct temporal clusters of responses with enrichment of oxidative dysfunction and senescence-related pathways/proteins during hyperammonemia and after ammonia withdrawal. Functional and metabolic studies showed defects in electron transport chain complexes I, III, and IV; loss of supercomplex assembly; decreased ATP synthesis; increased free radical generation with oxidative modification of proteins/lipids; and senescence-associated molecular phenotype–increased β-galactosidase activity and expression of p16INK, p21, and p53. These perturbations were partially reversed by ammonia lowering. Dysregulated ammonia metabolism caused reversible mitochondrial dysfunction by transcriptional and translational perturbations in multiple pathways with a distinct skeletal muscle senescence-associated molecular phenotype.
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Affiliation(s)
| | | | | | | | | | - Ling Li
- Proteomics & Metabolomics Core, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | | | | | | | | | | | | | - Charles Hoppel
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - Belinda Willard
- Proteomics & Metabolomics Core, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Gangarao Davuluri
- Department of Integrated Physiology and Molecular Metabolism, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Srinivasan Dasarathy
- Department of Inflammation & Immunity and.,Department of Gastroenterology, Hepatology & Nutrition, Cleveland Clinic, Cleveland, Ohio, USA
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9
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Huang Y, Li Z, Lin E, He P, Ru G. Oxidative damage-induced hyperactive ribosome biogenesis participates in tumorigenesis of offspring by cross-interacting with the Wnt and TGF-β1 pathways in IVF embryos. Exp Mol Med 2021; 53:1792-1806. [PMID: 34848840 PMCID: PMC8640061 DOI: 10.1038/s12276-021-00700-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/12/2021] [Accepted: 08/02/2021] [Indexed: 02/05/2023] Open
Abstract
In vitro fertilization (IVF) increases the risk of tumorigenesis in offspring. The increased oxidative damage during IVF may be involved in tumor formation. However, the molecular mechanisms underlying this phenomenon remain largely unclear. Using a well-established model of oxidatively damaged IVF mouse embryos, we applied the iTRAQ method to identify proteins differentially expressed between control and oxidatively damaged zygotes and explored the possible tumorigenic mechanisms, especially with regard to the effects of oxidative damage on ribosome biogenesis closely related to tumorigenesis. The iTRAQ results revealed that ribosomal proteins were upregulated by oxidative stress through the Nucleolin/β-Catenin/n-Myc pathway, which stimulated ribosomes to synthesize an abundance of repair proteins to correct the damaged DNA/chromosomes in IVF-derived embryos. However, the increased percentages of γH2AX-positive cells and apoptotic cells in the blastocyst suggested that DNA repair was insufficient, resulting in aberrant ribosome biogenesis. Overexpression of ribosomal proteins, particularly Rpl15, which gradually increased from the 1-cell to 8-cell stages, indicated persistent hyperactivation of ribosome biogenesis, which promoted tumorigenesis in offspring derived from oxidatively damaged IVF embryos by selectively enhancing the translation of β-Catenin and TGF-β1. The antioxidant epigallocatechin-3-gallate (EGCG) was added to the in vitro culture medium to protect embryos from oxidative damage, and the expression of ribosome-/tumor-related proteins returned to normal after EGCG treatment. This study suggests that regulation of ribosome biogenesis by EGCG may be a means of preventing tumor formation in human IVF-derived offspring, providing a scientific basis for optimizing in vitro culture conditions and improving human-assisted reproductive technology.
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Affiliation(s)
- Yue Huang
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China
| | - Zhiling Li
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China.
| | - En Lin
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China
- Institute of Molecular Physiology, Shenzhen Bay Laboratory, 518000, Shenzhen, Guangdong, China
| | - Pei He
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China
| | - Gaizhen Ru
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China
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10
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Saeki C, Tsubota A. Influencing Factors and Molecular Pathogenesis of Sarcopenia and Osteosarcopenia in Chronic Liver Disease. Life (Basel) 2021; 11:life11090899. [PMID: 34575048 PMCID: PMC8468289 DOI: 10.3390/life11090899] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/27/2021] [Accepted: 08/27/2021] [Indexed: 02/07/2023] Open
Abstract
The liver plays a pivotal role in nutrient/energy metabolism and storage, anabolic hormone regulation, ammonia detoxification, and cytokine production. Impaired liver function can cause malnutrition, hyperammonemia, and chronic inflammation, leading to an imbalance between muscle protein synthesis and proteolysis. Patients with chronic liver disease (CLD) have a high prevalence of sarcopenia, characterized by progressive loss of muscle mass and function, affecting health-related quality of life and prognosis. Recent reports have revealed that osteosarcopenia, defined as the concomitant occurrence of sarcopenia and osteoporosis, is also highly prevalent in patients with CLD. Since the differentiation and growth of muscles and bones are closely interrelated through mechanical and biochemical communication, sarcopenia and osteoporosis often progress concurrently and affect each other. Osteosarcopenia further exacerbates unfavorable health outcomes, such as vertebral fracture and frailty. Therefore, a comprehensive assessment of sarcopenia, osteoporosis, and osteosarcopenia, and an understanding of the pathogenic mechanisms involving the liver, bones, and muscles, are important for prevention and treatment. This review summarizes the molecular mechanisms of sarcopenia and osteosarcopenia elucidated to data in hopes of promoting advances in treating these musculoskeletal disorders in patients with CLD.
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Affiliation(s)
- Chisato Saeki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shimbashi, Minato-ku, Tokyo 105-8461, Japan;
| | - Akihito Tsubota
- Core Research Facilities, Research Center for Medical Science, The Jikei University School of Medicine, 3-25-8 Nishi-shimbashi, Minato-ku, Tokyo 105-8461, Japan
- Correspondence: ; Tel.: +81-3-3433-1111
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11
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Welch N, Singh SS, Kumar A, Dhruba SR, Mishra S, Sekar J, Bellar A, Attaway AH, Chelluboyina A, Willard BB, Li L, Huo Z, Karnik SS, Esser K, Longworth MS, Shah YM, Davuluri G, Pal R, Dasarathy S. Integrated multiomics analysis identifies molecular landscape perturbations during hyperammonemia in skeletal muscle and myotubes. J Biol Chem 2021; 297:101023. [PMID: 34343564 PMCID: PMC8424232 DOI: 10.1016/j.jbc.2021.101023] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/16/2021] [Accepted: 07/28/2021] [Indexed: 12/27/2022] Open
Abstract
Ammonia is a cytotoxic molecule generated during normal cellular functions. Dysregulated ammonia metabolism, which is evident in many chronic diseases such as liver cirrhosis, heart failure, and chronic obstructive pulmonary disease, initiates a hyperammonemic stress response in tissues including skeletal muscle and in myotubes. Perturbations in levels of specific regulatory molecules have been reported, but the global responses to hyperammonemia are unclear. In this study, we used a multiomics approach to vertically integrate unbiased data generated using an assay for transposase-accessible chromatin with high-throughput sequencing, RNA-Seq, and proteomics. We then horizontally integrated these data across different models of hyperammonemia, including myotubes and mouse and human muscle tissues. Changes in chromatin accessibility and/or expression of genes resulted in distinct clusters of temporal molecular changes including transient, persistent, and delayed responses during hyperammonemia in myotubes. Known responses to hyperammonemia, including mitochondrial and oxidative dysfunction, protein homeostasis disruption, and oxidative stress pathway activation, were enriched in our datasets. During hyperammonemia, pathways that impact skeletal muscle structure and function that were consistently enriched were those that contribute to mitochondrial dysfunction, oxidative stress, and senescence. We made several novel observations, including an enrichment in antiapoptotic B-cell leukemia/lymphoma 2 family protein expression, increased calcium flux, and increased protein glycosylation in myotubes and muscle tissue upon hyperammonemia. Critical molecules in these pathways were validated experimentally. Human skeletal muscle from patients with cirrhosis displayed similar responses, establishing translational relevance. These data demonstrate complex molecular interactions during adaptive and maladaptive responses during the cellular stress response to hyperammonemia.
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Affiliation(s)
- Nicole Welch
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA; Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, Ohio, USA
| | - Shashi Shekhar Singh
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Avinash Kumar
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Saugato Rahman Dhruba
- Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, Texas, USA
| | - Saurabh Mishra
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Jinendiran Sekar
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Annette Bellar
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Amy H Attaway
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA; Department of Pulmonary Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | - Aruna Chelluboyina
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Belinda B Willard
- Proteomics Research Core Services, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Ling Li
- Proteomics Research Core Services, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Zhiguang Huo
- Department of Biostatistics, College of Public Health and Health Profession, University of Florida, Gainesville, Florida, USA
| | - Sadashiva S Karnik
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Karyn Esser
- Department of Physiology and Functional Genomics, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Michelle S Longworth
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Yatrik M Shah
- Department of Molecular & Integrative Physiology and Department of Gastroenterology, University of Michigan, Ann Arbor, Michigan, USA
| | - Gangarao Davuluri
- Integrated Physiology and Molecular Metabolism, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Ranadip Pal
- Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, Texas, USA.
| | - Srinivasan Dasarathy
- Department of Inflammation & Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA; Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, Ohio, USA.
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12
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Tandon P, Montano-Loza AJ, Lai JC, Dasarathy S, Merli M. Sarcopenia and frailty in decompensated cirrhosis. J Hepatol 2021; 75 Suppl 1:S147-S162. [PMID: 34039486 PMCID: PMC9125684 DOI: 10.1016/j.jhep.2021.01.025] [Citation(s) in RCA: 138] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/13/2021] [Accepted: 01/13/2021] [Indexed: 02/07/2023]
Abstract
In patients with decompensated cirrhosis, sarcopenia and frailty are prevalent. Although several definitions exist for these terms, in the field of hepatology, sarcopenia has commonly been defined as loss of muscle mass, and frailty has been broadly defined as the phenotypic manifestation of the loss of muscle function. Prompt recognition and accurate assessment of these conditions are critical as they are both strongly associated with morbidity, mortality, poor quality of life and worse post-liver transplant outcomes in patients with cirrhosis. In this review, we describe the complex pathophysiology that underlies the clinical phenotypes of sarcopenia and frailty, their association with decompensation, and provide an overview of tools to assess these conditions in patients with cirrhosis. When available, we highlight data focusing on patients with acutely decompensated cirrhosis, such as inpatients, as this is an area of unmet clinical need. Finally, we discuss management strategies to reverse and/or prevent the development of sarcopenia and frailty, which include adequate nutritional intake of calories and protein, as well as regular exercise of at least moderate intensity, with a mix of aerobic and resistance training. Key knowledge gaps in our understanding of sarcopenia and frailty in decompensated cirrhosis remain, including best methods to measure muscle mass and function in the inpatient setting, racial/ethnic variation in the development and presentation of sarcopenia and frailty, and optimal clinical metrics to assess response to therapeutic interventions that translate into a reduction in adverse outcomes associated with these conditions.
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Affiliation(s)
- Puneeta Tandon
- Division of Gastroenterology & Liver Unit, University of Alberta Hospital, Canada.
| | - Aldo J Montano-Loza
- Division of Gastroenterology & Liver Unit, University of Alberta Hospital, Canada
| | - Jennifer C Lai
- Divisions of Gastroenterology and Hepatology, University of California, San Francisco, San Francisco, CA, USA
| | - Srinivasan Dasarathy
- Division of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH, USA
| | - Manuela Merli
- Department of Clinical Medicine, Gastroenterology, Sapienza University of Rome, Italy.
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13
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Zhang Y, Zhao J, Zhou BH, Tian EJ, Tian WS, Wang HW. iTRAQ-based quantitative proteomic analysis of low molybdenum inducing thymus atrophy and participating in immune deficiency-related diseases. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 216:112200. [PMID: 33862434 DOI: 10.1016/j.ecoenv.2021.112200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/10/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Molybdenum is a trace element with extremely uneven distribution in the environment. It constitutes the active sites of molybdenum enzymes that can catalyze redox reactions in almost all organisms. In this study, a mouse model with a low molybdenum diet was established to investigate the differential protein expressions in the thymus and the mechanism of molybdenum regulating thymocyte development. Results showed that the thymus evidently atrophied, and the weight and organ index of the thymus substantially decreased under the condition of low molybdenum (P < 0.01). A total of 274 differentially expressed proteins (DEPs) were screened through isobaric tag for relative and absolute quantification; amongst them, ribosomal proteins (38) were the most abundant. Bioinformatics analysis revealed that DEPs were mainly involved in protein metabolism (18%), nucleus (15%) and nucleic acid binding activity (17%), corresponding to biological process, cellular component and molecular function, respectively. Moreover, DEPs induced by low molybdenum were enriched in 94 pathways, of which typical maps including ribosome, oxidative phosphorylation and systemic lupus erythematosus. Flow cytometry analysis indicated the prominent imbalances of CD4+ and CD8+ cell ratios (P < 0.05, P < 0.01), suggesting the disordered development of T cell subsets. Overall, low molybdenum resulted in thymus atrophy by interfering with ribosomal protein expression and protein metabolism. This study provides a data platform for revealing the linkage between molybdenum and thymus-dependent immunity.
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Affiliation(s)
- Yan Zhang
- Henan Key Laboratory of Environmental and Animal Product Safety Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Jing Zhao
- Henan Key Laboratory of Environmental and Animal Product Safety Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Bian-Hua Zhou
- Henan Key Laboratory of Environmental and Animal Product Safety Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Er-Jie Tian
- Henan Key Laboratory of Environmental and Animal Product Safety Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Wei-Shun Tian
- College of Veterinary Medicine and Bio-safety Research Institute, Jeonbuk National University, Iksan 54596, South Korea
| | - Hong-Wei Wang
- Henan Key Laboratory of Environmental and Animal Product Safety Henan University of Science and Technology, Luoyang 471003, Henan, China.
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14
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Weeks SE, Kammerud SC, Metge BJ, AlSheikh HA, Schneider DA, Chen D, Wei S, Mobley JA, Ojesina AI, Shevde LA, Samant RS. Inhibiting β-catenin disables nucleolar functions in triple-negative breast cancer. Cell Death Dis 2021; 12:242. [PMID: 33664239 PMCID: PMC7933177 DOI: 10.1038/s41419-021-03531-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/04/2021] [Accepted: 02/15/2021] [Indexed: 01/31/2023]
Abstract
Triple-negative breast cancer (TNBC) patients with upregulated Wnt/β-catenin signaling often have poor clinical prognoses. During pathological examinations of breast cancer sections stained for β-catenin, we made the serendipitous observation that relative to non-TNBC, specimens from TNBC patients have a greater abundance of nucleoli. There was a remarkable direct relationship between nuclear β-catenin and greater numbers of nucleoli in TNBC tissues. These surprising observations spurred our investigations to decipher the differential functional relevance of the nucleolus in TNBC versus non-TNBC cells. Comparative nucleolar proteomics revealed that the majority of the nucleolar proteins in TNBC cells were potential targets of β-catenin signaling. Next, we undertook an analysis of the nucleolar proteome in TNBC cells in response to β-catenin inhibition. This effort revealed that a vital component of pre-rRNA processing, LAS1 like ribosome biogenesis factor (LAS1L) was significantly decreased in the nucleoli of β-catenin inhibited TNBC cells. Here we demonstrate that LAS1L protein expression is significantly elevated in TNBC patients, and it functionally is important for mammary tumor growth in xenograft models and enables invasive attributes. Our observations highlight a novel function for β-catenin in orchestrating nucleolar activity in TNBCs.
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Affiliation(s)
- Shannon E Weeks
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Sarah C Kammerud
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Brandon J Metge
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Heba A AlSheikh
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - David A Schneider
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Dongquan Chen
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Shi Wei
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - James A Mobley
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Akinyemi I Ojesina
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lalita A Shevde
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rajeev S Samant
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA.
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA.
- Birmingham VA Medical Center, Birmingham, AL, USA.
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15
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Dantas WS, Roschel H, Murai IH, Gil S, Davuluri G, Axelrod CL, Ghosh S, Newman SS, Zhang H, Shinjo SK, das Neves W, Merege-Filho C, Teodoro WR, Capelozzi VL, Pereira RM, Benatti FB, de Sá-Pinto AL, de Cleva R, Santo MA, Kirwan JP, Gualano B. Exercise-Induced Increases in Insulin Sensitivity After Bariatric Surgery Are Mediated By Muscle Extracellular Matrix Remodeling. Diabetes 2020; 69:1675-1691. [PMID: 32409493 PMCID: PMC7372074 DOI: 10.2337/db19-1180] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/08/2020] [Indexed: 02/06/2023]
Abstract
Exercise seems to enhance the beneficial effect of bariatric (Roux-en-Y gastric bypass [RYGB]) surgery on insulin resistance. We hypothesized that skeletal muscle extracellular matrix (ECM) remodeling may underlie these benefits. Women were randomized to either a combined aerobic and resistance exercise training program following RYGB (RYGB + ET) or standard of care (RYGB). Insulin sensitivity was assessed by oral glucose tolerance test. Muscle biopsy specimens were obtained at baseline and 3 and 9 months after surgery and subjected to comprehensive phenotyping, transcriptome profiling, molecular pathway identification, and validation in vitro. Exercise training improved insulin sensitivity beyond surgery alone (e.g., Matsuda index: RYGB 123% vs. RYGB + ET 325%; P ≤ 0.0001). ECM remodeling was reduced by surgery alone, with an additive benefit of surgery and exercise training (e.g., collagen I: RYGB -41% vs. RYGB + ET -76%; P ≤ 0.0001). Exercise and RYGB had an additive effect on enhancing insulin sensitivity, but surgery alone did not resolve insulin resistance and ECM remodeling. We identified candidates modulated by exercise training that may become therapeutic targets for treating insulin resistance, in particular, the transforming growth factor-β1/SMAD 2/3 pathway and its antagonist follistatin. Exercise-induced increases in insulin sensitivity after bariatric surgery are at least partially mediated by muscle ECM remodeling.
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Affiliation(s)
- Wagner S Dantas
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Hamilton Roschel
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Igor H Murai
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Saulo Gil
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Gangarao Davuluri
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Christopher L Axelrod
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
- Department of Translational Services, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Sujoy Ghosh
- Genomics Core, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
- Cardiovascular and Metabolic Disorders Program and Center for Computational Biology, Duke-National University of Singapore Medical School, Singapore
| | - Susan S Newman
- Genomics Core, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Hui Zhang
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Samuel K Shinjo
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Willian das Neves
- Clinical Oncology Service, Instituto do Câncer do Estado de São Paulo, São Paulo, Brazil
| | - Carlos Merege-Filho
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Walcy R Teodoro
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Vera L Capelozzi
- Department of Pathology, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Rosa Maria Pereira
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Fabiana B Benatti
- School of Applied Sciences, Universidade Estadual de Campinas, São Paulo, Brazil
| | - Ana L de Sá-Pinto
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Roberto de Cleva
- Department of Digestive Division, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Marco A Santo
- Department of Digestive Division, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - John P Kirwan
- Integrated Physiology and Molecular Metabolism Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA
| | - Bruno Gualano
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport, Laboratory of Assessment and Conditioning in Rheumatology, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
- Rheumatology Division, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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16
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Bellar A, Welch N, Dasarathy S. Exercise and physical activity in cirrhosis: opportunities or perils. J Appl Physiol (1985) 2020; 128:1547-1567. [PMID: 32240017 DOI: 10.1152/japplphysiol.00798.2019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Reduced exercise capacity and impaired physical performance are observed in nearly all patients with liver cirrhosis. Physical activity and exercise are physiological anabolic stimuli that can reverse dysregulated protein homeostasis or proteostasis and potentially increase muscle mass and contractile function in healthy subjects. Cirrhosis is a state of anabolic resistance, and unlike the beneficial responses to exercise reported in physiological states, there are few systematic studies evaluating the response to exercise in cirrhosis. Hyperammonemia is a mediator of the liver-muscle axis with net skeletal muscle ammonia uptake in cirrhosis causing signaling perturbations, mitochondrial dysfunction with decreased ATP content, modifications of contractile proteins, and impaired ribosomal function, all of which contribute to anabolic resistance in cirrhosis and have the potential to impair the beneficial responses to exercise. English language-publications in peer-reviewed journals that specifically evaluated the impact of exercise in cirrhosis were reviewed. Most studies evaluated responses to endurance exercise, and readouts included peak or maximum oxygen utilization, grip strength, and functional capacity. Endurance exercise for up to 12 wk is clinically tolerated in well-compensated cirrhosis. Data on the safety of resistance exercise are conflicting. Nutritional supplements enhance the benefits of exercise in healthy subjects but have not been evaluated in cirrhosis. Whether the beneficial physiological responses with endurance exercise and increase in muscle mass with resistance exercise that occur in healthy subjects also occur in cirrhotics is not known. Specific organ-system responses, changes in body composition, or improved long-term clinical outcomes with exercise in cirrhosis need evaluation.
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Affiliation(s)
- Annette Bellar
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Nicole Welch
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio.,Department of Gastroenterology, Hepatology Cleveland Clinic, Cleveland, Ohio
| | - Srinivasan Dasarathy
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio.,Department of Gastroenterology, Hepatology Cleveland Clinic, Cleveland, Ohio
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17
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Li M, Shin J, Risgaard RD, Parries MJ, Wang J, Chasman D, Liu S, Roy S, Bhattacharyya A, Zhao X. Identification of FMR1-regulated molecular networks in human neurodevelopment. Genome Res 2020; 30:361-374. [PMID: 32179589 PMCID: PMC7111522 DOI: 10.1101/gr.251405.119] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 02/21/2020] [Indexed: 12/17/2022]
Abstract
RNA-binding proteins (RNA-BPs) play critical roles in development and disease to regulate gene expression. However, genome-wide identification of their targets in primary human cells has been challenging. Here, we applied a modified CLIP-seq strategy to identify genome-wide targets of the FMRP translational regulator 1 (FMR1), a brain-enriched RNA-BP, whose deficiency leads to Fragile X Syndrome (FXS), the most prevalent inherited intellectual disability. We identified FMR1 targets in human dorsal and ventral forebrain neural progenitors and excitatory and inhibitory neurons differentiated from human pluripotent stem cells. In parallel, we measured the transcriptomes of the same four cell types upon FMR1 gene deletion. We discovered that FMR1 preferentially binds long transcripts in human neural cells. FMR1 targets include genes unique to human neural cells and associated with clinical phenotypes of FXS and autism. Integrative network analysis using graph diffusion and multitask clustering of FMR1 CLIP-seq and transcriptional targets reveals critical pathways regulated by FMR1 in human neural development. Our results demonstrate that FMR1 regulates a common set of targets among different neural cell types but also operates in a cell type-specific manner targeting distinct sets of genes in human excitatory and inhibitory neural progenitors and neurons. By defining molecular subnetworks and validating specific high-priority genes, we identify novel components of the FMR1 regulation program. Our results provide new insights into gene regulation by a critical neuronal RNA-BP in human neurodevelopment.
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Affiliation(s)
- Meng Li
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.,Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Junha Shin
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Ryan D Risgaard
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.,Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Molly J Parries
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.,Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Jianyi Wang
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.,Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Deborah Chasman
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Shuang Liu
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Sushmita Roy
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.,Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Anita Bhattacharyya
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.,Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Xinyu Zhao
- Waisman Center, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.,Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
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18
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Kumar A, Davuluri G, Welch N, Kim A, Gangadhariah M, Allawy A, Priyadarshini A, McMullen MR, Sandlers Y, Willard B, Hoppel CL, Nagy LE, Dasarathy S. Oxidative stress mediates ethanol-induced skeletal muscle mitochondrial dysfunction and dysregulated protein synthesis and autophagy. Free Radic Biol Med 2019; 145:284-299. [PMID: 31574345 PMCID: PMC6910229 DOI: 10.1016/j.freeradbiomed.2019.09.031] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/25/2019] [Accepted: 09/25/2019] [Indexed: 12/21/2022]
Abstract
Protein synthesis and autophagy are regulated by cellular ATP content. We tested the hypothesis that mitochondrial dysfunction, including generation of reactive oxygen species (ROS), contributes to impaired protein synthesis and increased proteolysis resulting in tissue atrophy in a comprehensive array of models. In myotubes treated with ethanol, using unbiased approaches, we identified defects in mitochondrial electron transport chain components, endogenous antioxidants, and enzymes regulating the tricarboxylic acid (TCA) cycle. Using high sensitivity respirometry, we observed impaired cellular respiration, decreased function of complexes I, II, and IV, and a reduction in oxidative phosphorylation in ethanol-treated myotubes and muscle from ethanol-fed mice. These perturbations resulted in lower skeletal muscle ATP content and redox ratio (NAD+/NADH). Ethanol also caused a leak of electrons, primarily from complex III, with generation of mitochondrial ROS and reverse electron transport. Oxidant stress with lipid peroxidation (thiobarbituric acid reactive substances) and protein oxidation (carbonylated proteins) were increased in myotubes and skeletal muscle from mice and humans with alcoholic liver disease. Ethanol also impaired succinate oxidation in the TCA cycle with decreased metabolic intermediates. MitoTEMPO, a mitochondrial specific antioxidant, reversed ethanol-induced mitochondrial perturbations (including reduced oxygen consumption, generation of ROS and oxidative stress), increased TCA cycle intermediates, and reversed impaired protein synthesis and the sarcopenic phenotype. We show that ethanol causes skeletal muscle mitochondrial dysfunction, decreased protein synthesis, and increased autophagy, and that these perturbations are reversed by targeting mitochondrial ROS.
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Affiliation(s)
- Avinash Kumar
- The Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Gangarao Davuluri
- Integrated Physiology and Molecular Metabolism, Pennington Biomedical Research Center, Baton Rouge, LA, USA
| | - Nicole Welch
- The Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA; The Department of Gastroenterology and Hepatology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Adam Kim
- The Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Mahesha Gangadhariah
- The Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Allawy Allawy
- The Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Anupama Priyadarshini
- The Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Megan R McMullen
- The Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Yana Sandlers
- Department of Chemistry, Cleveland State University, Cleveland, OH, USA
| | - Belinda Willard
- The Department of Proteomics Research Core Services, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Charles L Hoppel
- Department of Pharmacology, Case Western Reserve University, Cleveland, OH, USA
| | - Laura E Nagy
- The Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Srinivasan Dasarathy
- The Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA; The Department of Gastroenterology and Hepatology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA.
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