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Zou Y, Tang X, Yang S, Chen Z, Liu B, Zhou Z, Peng X, Tang C. New insights into the function of the NLRP3 inflammasome in sarcopenia: mechanism and therapeutic strategies. Metabolism 2024; 158:155972. [PMID: 38972476 DOI: 10.1016/j.metabol.2024.155972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/09/2024]
Abstract
Sarcopenia is one of the most common skeletal muscle disorders and is characterized by infirmity and disability. While extensive research has focused on elucidating the mechanisms underlying the progression of sarcopenia, further comprehensive insights into its pathogenesis are necessary to identify new preventive and therapeutic approaches. The involvement of inflammasomes in sarcopenia is widely recognized, with particular emphasis on the NLRP3 (NLR family pyrin domain containing 3) inflammasome. In this review, we aim to elucidate the underlying mechanisms of the NLRP3 inflammasome and its relevance in sarcopenia of various etiologies. Furthermore, we highlight interventions targeting the NLRP3 inflammasome in the context of sarcopenia and discuss the current limitations of our knowledge in this area.
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Affiliation(s)
- Yunyi Zou
- State Key Laboratory of Developmental Biology of Freshwater Fish, Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, College of Physical Education, Hunan Normal University, Changsha, China
| | - Xiangbin Tang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, College of Physical Education, Hunan Normal University, Changsha, China
| | - Siyuan Yang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, College of Physical Education, Hunan Normal University, Changsha, China
| | - Zhanglin Chen
- State Key Laboratory of Developmental Biology of Freshwater Fish, Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, College of Physical Education, Hunan Normal University, Changsha, China
| | - Bin Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, College of Physical Education, Hunan Normal University, Changsha, China
| | - Zuoqiong Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish, Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, College of Physical Education, Hunan Normal University, Changsha, China
| | - Xiyang Peng
- State Key Laboratory of Developmental Biology of Freshwater Fish, Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, College of Physical Education, Hunan Normal University, Changsha, China.
| | - Changfa Tang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, College of Physical Education, Hunan Normal University, Changsha, China.
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Kung M, Yang T, Lin C, Ho J, Hung T, Chang C, Huang K, Chen C, Chen Y. ADAR2 deficiency ameliorates non-alcoholic fatty liver disease and muscle atrophy through modulating serum amyloid A1. J Cachexia Sarcopenia Muscle 2024; 15:949-962. [PMID: 38533529 PMCID: PMC11154747 DOI: 10.1002/jcsm.13460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 02/21/2024] [Accepted: 02/29/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease worldwide. Sarcopenia is a syndrome characterized by progressive and generalized loss of skeletal muscle mass and strength, which is commonly associated with NAFLD. Adenosine-to-inosine editing, catalysed by adenosine deaminase acting on RNA (ADAR), is an important post-transcriptional modification of genome-encoded RNA transcripts. Three ADAR gene family members, including ADAR1, ADAR2 and ADAR3, have been identified. However, the functional role of ADAR2 in obesity-associated NAFLD and sarcopenia remains unclear. METHODS ADAR2+/+/GluR-BR/R mice (wild type [WT]) and ADAR2-/-/GluR-BR/R mice (ADAR2 knockout [KO]) were subjected to feeding with standard chow or high-fat diet (HFD) for 20 weeks at the age of 5 weeks. The metabolic parameters, hepatic lipid droplet, grip strength test, rotarod test, muscle weight, fibre cross-sectional area (CSA), fibre types and protein associated with protein degradation were examined. Systemic and local tissues serum amyloid A1 (SAA1) were measured. The effects of SAA1 on C2C12 myotube atrophy were investigated. RESULTS ADAR2 KO mice fed with HFD exhibited lower body weight (-7.7%, P < 0.05), lower liver tissue weight (-20%, P < 0.05), reduced liver lipid droplets in concert with a decrease in hepatic triglyceride content (-24%, P < 0.001) and liver injury (P < 0.01). ADAR2 KO mice displayed protection against HFD-induced glucose intolerance, insulin resistance and dyslipidaemia. Skeletal muscle mass (P < 0.01), muscle strength (P < 0.05), muscle endurance (P < 0.001) and fibre size (CSA; P < 0.0001) were improved in ADAR2 KO mice fed with HFD compared with WT mice fed with HFD. Muscle atrophy-associated transcripts, such as forkhead box protein O1, muscle atrophy F-box/atrogin-1 and muscle RING finger 1/tripartite motif-containing 63, were decreased in ADAR2 KO mice fed with HFD compared with WT mice fed with HFD. ADAR2 deficiency attenuates HFD-induced local liver and skeletal muscle tissue inflammation. ADAR2 deficiency abolished HFD-induced systemic (P < 0.01), hepatic (P < 0.0001) and muscular (P < 0.001) SAA1 levels. C2C12 myotubes treated with recombinant SAA1 displayed a decrease in myotube length (-37%, P < 0.001), diameter (-20%, P < 0.01), number (-39%, P < 0.001) and fusion index (-46%, P < 0.01). Myogenic markers (myosin heavy chain and myogenin) were decreased in SAA1-treated myoblast C2C12 cells. CONCLUSIONS These results provide novel evidence that ADAR2 deficiency may be important in obesity-associated sarcopenia and NAFLD. Increased SAA1 might be involved as a regulatory factor in developing sarcopenia in NAFLD.
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Affiliation(s)
- Mei‐Lang Kung
- Department of Medical Education and ResearchKaohsiung Veterans General HospitalKaohsiungTaiwan
| | - Tai‐Hua Yang
- Department of Biomedical EngineeringCollege of Engineering, National Cheng Kung UniversityTainanTaiwan
- Department of Orthopedic SurgeryNational Cheng Kung University Hospital, College of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Chia‐Chi Lin
- Department of PharmacologyCollege of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Jia‐Yun Ho
- Department of PharmacologyCollege of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Tzu‐Chi Hung
- Department of PharmacologyCollege of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Chih‐Hsiang Chang
- Department of PharmacologyCollege of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Kuan‐Wen Huang
- Department of PharmacologyCollege of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Chien‐Chin Chen
- Department of PathologyDitmanson Medical Foundation Chia‐Yi Christian HospitalChiayiTaiwan
- Department of Cosmetic ScienceChia Nan University of Pharmacy and ScienceTainanTaiwan
- Ph.D. Program in Translational Medicine, Rong Hsing Research Center for Translational MedicineNational Chung Hsing UniversityTaichungTaiwan
- Department of Biotechnology and Bioindustry SciencesCollege of Bioscience and Biotechnology, National Cheng Kung UniversityTainanTaiwan
| | - Yun‐Wen Chen
- Department of PharmacologyCollege of Medicine, National Cheng Kung UniversityTainanTaiwan
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3
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Slim MA, van Amstel RBE, Bos LDJ, Cremer OL, Wiersinga WJ, van der Poll T, van Vught LA. Inflammatory subphenotypes previously identified in ARDS are associated with mortality at intensive care unit discharge: a secondary analysis of a prospective observational study. Crit Care 2024; 28:151. [PMID: 38715131 PMCID: PMC11077885 DOI: 10.1186/s13054-024-04929-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 04/21/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND Intensive care unit (ICU)-survivors have an increased risk of mortality after discharge compared to the general population. On ICU admission subphenotypes based on the plasma biomarker levels of interleukin-8, protein C and bicarbonate have been identified in patients admitted with acute respiratory distress syndrome (ARDS) that are prognostic of outcome and predictive of treatment response. We hypothesized that if these inflammatory subphenotypes previously identified among ARDS patients are assigned at ICU discharge in a more general critically ill population, they are associated with short- and long-term outcome. METHODS A secondary analysis of a prospective observational cohort study conducted in two Dutch ICUs between 2011 and 2014 was performed. All patients discharged alive from the ICU were at ICU discharge adjudicated to the previously identified inflammatory subphenotypes applying a validated parsimonious model using variables measured median 10.6 h [IQR, 8.0-31.4] prior to ICU discharge. Subphenotype distribution at ICU discharge, clinical characteristics and outcomes were analyzed. As a sensitivity analysis, a latent class analysis (LCA) was executed for subphenotype identification based on plasma protein biomarkers at ICU discharge reflective of coagulation activation, endothelial cell activation and inflammation. Concordance between the subphenotyping strategies was studied. RESULTS Of the 8332 patients included in the original cohort, 1483 ICU-survivors had plasma biomarkers available and could be assigned to the inflammatory subphenotypes. At ICU discharge 6% (n = 86) was assigned to the hyperinflammatory and 94% (n = 1397) to the hypoinflammatory subphenotype. Patients assigned to the hyperinflammatory subphenotype were discharged with signs of more severe organ dysfunction (SOFA scores 7 [IQR 5-9] vs. 4 [IQR 2-6], p < 0.001). Mortality was higher in patients assigned to the hyperinflammatory subphenotype (30-day mortality 21% vs. 11%, p = 0.005; one-year mortality 48% vs. 28%, p < 0.001). LCA deemed 2 subphenotypes most suitable. ICU-survivors from class 1 had significantly higher mortality compared to class 2. Patients belonging to the hyperinflammatory subphenotype were mainly in class 1. CONCLUSIONS Patients assigned to the hyperinflammatory subphenotype at ICU discharge showed significantly stronger anomalies in coagulation activation, endothelial cell activation and inflammation pathways implicated in the pathogenesis of critical disease and increased mortality until one-year follow up.
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Affiliation(s)
- Marleen A Slim
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
- Department of Intensive Care, Amsterdam University Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, The Netherlands.
| | - Rombout B E van Amstel
- Department of Intensive Care, Amsterdam University Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, The Netherlands
| | - Lieuwe D J Bos
- Department of Intensive Care, Amsterdam University Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, The Netherlands
| | - Olaf L Cremer
- Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - W Joost Wiersinga
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Department of Medicine, Division of Infectious Diseases, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Tom van der Poll
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Department of Medicine, Division of Infectious Diseases, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Lonneke A van Vught
- Center for Experimental and Molecular Medicine, Amsterdam University Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Department of Intensive Care, Amsterdam University Medical Center, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, The Netherlands
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Lai Y, Ramírez-Pardo I, Isern J, An J, Perdiguero E, Serrano AL, Li J, García-Domínguez E, Segalés J, Guo P, Lukesova V, Andrés E, Zuo J, Yuan Y, Liu C, Viña J, Doménech-Fernández J, Gómez-Cabrera MC, Song Y, Liu L, Xu X, Muñoz-Cánoves P, Esteban MA. Multimodal cell atlas of the ageing human skeletal muscle. Nature 2024; 629:154-164. [PMID: 38649488 PMCID: PMC11062927 DOI: 10.1038/s41586-024-07348-6] [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: 08/24/2022] [Accepted: 03/25/2024] [Indexed: 04/25/2024]
Abstract
Muscle atrophy and functional decline (sarcopenia) are common manifestations of frailty and are critical contributors to morbidity and mortality in older people1. Deciphering the molecular mechanisms underlying sarcopenia has major implications for understanding human ageing2. Yet, progress has been slow, partly due to the difficulties of characterizing skeletal muscle niche heterogeneity (whereby myofibres are the most abundant) and obtaining well-characterized human samples3,4. Here we generate a single-cell/single-nucleus transcriptomic and chromatin accessibility map of human limb skeletal muscles encompassing over 387,000 cells/nuclei from individuals aged 15 to 99 years with distinct fitness and frailty levels. We describe how cell populations change during ageing, including the emergence of new populations in older people, and the cell-specific and multicellular network features (at the transcriptomic and epigenetic levels) associated with these changes. On the basis of cross-comparison with genetic data, we also identify key elements of chromatin architecture that mark susceptibility to sarcopenia. Our study provides a basis for identifying targets in the skeletal muscle that are amenable to medical, pharmacological and lifestyle interventions in late life.
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Affiliation(s)
- Yiwei Lai
- BGI Research, Hangzhou, China
- BGI Research, Shenzhen, China
| | - Ignacio Ramírez-Pardo
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Altos Labs, San Diego Institute of Science, San Diego, CA, USA
| | - Joan Isern
- Altos Labs, San Diego Institute of Science, San Diego, CA, USA
| | - Juan An
- BGI Research, Hangzhou, China
- BGI Research, Shenzhen, China
- Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Eusebio Perdiguero
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Altos Labs, San Diego Institute of Science, San Diego, CA, USA
| | - Antonio L Serrano
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Altos Labs, San Diego Institute of Science, San Diego, CA, USA
| | - Jinxiu Li
- BGI Research, Hangzhou, China
- BGI Research, Shenzhen, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Esther García-Domínguez
- Freshage Research Group, Department of Physiology, Faculty of Medicine, University of Valencia and CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, Valencia, Spain
| | - Jessica Segalés
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Pengcheng Guo
- BGI Research, Hangzhou, China
- BGI Research, Shenzhen, China
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Jilin, China
| | - Vera Lukesova
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Eva Andrés
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Jing Zuo
- BGI Research, Hangzhou, China
- BGI Research, Shenzhen, China
| | - Yue Yuan
- BGI Research, Hangzhou, China
- BGI Research, Shenzhen, China
| | - Chuanyu Liu
- BGI Research, Hangzhou, China
- BGI Research, Shenzhen, China
| | - José Viña
- Freshage Research Group, Department of Physiology, Faculty of Medicine, University of Valencia and CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, Valencia, Spain
| | - Julio Doménech-Fernández
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Arnau de Vilanova y Hospital de Liria and Health Care Department Arnau-Lliria, Valencia, Spain
- Department of Orthopedic Surgery, Clinica Universidad de Navarra, Pamplona, Spain
| | - Mari Carmen Gómez-Cabrera
- Freshage Research Group, Department of Physiology, Faculty of Medicine, University of Valencia and CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, Valencia, Spain
| | - Yancheng Song
- Department of Orthopedics, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
| | - Longqi Liu
- BGI Research, Hangzhou, China
- BGI Research, Shenzhen, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Xun Xu
- BGI Research, Hangzhou, China
- BGI Research, Shenzhen, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Pura Muñoz-Cánoves
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain.
- Altos Labs, San Diego Institute of Science, San Diego, CA, USA.
- ICREA, Barcelona, Spain.
| | - Miguel A Esteban
- BGI Research, Hangzhou, China.
- BGI Research, Shenzhen, China.
- Laboratory of Integrative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Jilin, China.
- The Fifth Affiliated Hospital of Guangzhou Medical University-BGI Research Center for Integrative Biology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
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Lei M, Feng T, Zhang M, Chang F, Liu J, Sun B, Chen M, Li Y, Zhang L, Tang P, Yin P. CHRONIC CRITICAL ILLNESS-INDUCED MUSCLE ATROPHY: INSIGHTS FROM A TRAUMA MOUSE MODEL AND POTENTIAL MECHANISM MEDIATED VIA SERUM AMYLOID A. Shock 2024; 61:465-476. [PMID: 38517246 DOI: 10.1097/shk.0000000000002322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
ABSTRACT Background: Chronic critical illness (CCI), which was characterized by persistent inflammation, immunosuppression, and catabolism syndrome (PICS), often leads to muscle atrophy. Serum amyloid A (SAA), a protein upregulated in critical illness myopathy, may play a crucial role in these processes. However, the effects of SAA on muscle atrophy in PICS require further investigation. This study aims to develop a mouse model of PICS combined with bone trauma to investigate the mechanisms underlying muscle weakness, with a focus on SAA. Methods: Mice were used to examine the effects of PICS after bone trauma on immune response, muscle atrophy, and bone healing. The mice were divided into two groups: a bone trauma group and a bone trauma with cecal ligation and puncture group. Tibia fracture surgery was performed on all mice, and PICS was induced through cecal ligation and puncture surgery in the PICS group. Various assessments were conducted, including weight change analysis, cytokine analysis, hematological analysis, grip strength analysis, histochemical staining, and immunofluorescence staining for SAA. In vitro experiments using C2C12 cells (myoblasts) were also conducted to investigate the role of SAA in muscle atrophy. The effects of inhibiting receptor for advanced glycation endproducts (RAGE) or JAK2 on SAA-induced muscle atrophy were examined. Bioinformatic analysis was conducted using a dataset from the GEO database to identify differentially expressed genes and construct a coexpression network. Results: Bioinformatic analysis confirmed that SAA was significantly upregulated in muscle tissue of patients with intensive care unit-induced muscle atrophy. The PICS animal models exhibited significant weight loss, spleen enlargement, elevated levels of proinflammatory cytokines, and altered hematological profiles. Evaluation of muscle atrophy in the animal models demonstrated decreased muscle mass, grip strength loss, decreased diameter of muscle fibers, and significantly increased expression of SAA. In vitro experiment demonstrated that SAA decreased myotube formation, reduced myotube diameter, and increased the expression of muscle atrophy-related genes. Furthermore, SAA expression was associated with activation of the FOXO signaling pathway, and inhibition of RAGE or JAK2/STAT3-FOXO signaling partially reversed SAA-induced muscle atrophy. Conclusions: This study successfully develops a mouse model that mimics PICS in CCI patients with bone trauma. Serum amyloid A plays a crucial role in muscle atrophy through the JAK2/STAT3-FOXO signaling pathway, and targeting RAGE or JAK2 may hold therapeutic potential in mitigating SAA-induced muscle atrophy.
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Lequain H, Dégletagne C, Streichenberger N, Valantin J, Simonet T, Schaeffer L, Sève P, Leblanc P. Spatial Transcriptomics Reveals Signatures of Histopathological Changes in Muscular Sarcoidosis. Cells 2023; 12:2747. [PMID: 38067175 PMCID: PMC10706822 DOI: 10.3390/cells12232747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 11/25/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Sarcoidosis is a multisystemic disease characterized by non-caseating granuloma infiltrating various organs. The form with symptomatic muscular involvement is called muscular sarcoidosis. The impact of immune cells composing the granuloma on the skeletal muscle is misunderstood. Here, we investigated the granuloma-skeletal muscle interactions through spatial transcriptomics on two patients affected by muscular sarcoidosis. Five major transcriptomic clusters corresponding to perigranuloma, granuloma, and three successive muscle tissue areas (proximal, intermediate, and distal) around the granuloma were identified. Analyses revealed upregulated pathways in the granuloma corresponding to the activation of T-lymphocytes and monocytes/macrophages cytokines, the upregulation of extracellular matrix signatures, and the induction of the TGF-β signaling in the perigranuloma. A comparison between the proximal and distal muscles to the granuloma revealed an inverse correlation between the distance to the granuloma and the upregulation of cellular response to interferon-γ/α, TNF-α, IL-1,4,6, fibroblast proliferation, epithelial to mesenchymal cell transition, and the downregulation of muscle gene expression. These data shed light on the intercommunications between granulomas and the muscle tissue and provide pathophysiological mechanisms by showing that granuloma immune cells have a direct impact on proximal muscle tissue by promoting its progressive replacement by fibrosis via the expression of pro-inflammatory and profibrosing signatures. These data could possibly explain the evolution towards a state of disability for some patients.
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Affiliation(s)
- Hippolyte Lequain
- Département de Médecine Interne, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, 69004 Lyon, France;
- Institut NeuroMyoGène INMG-PGNM, Physiopathologie et Génétique du Neurone et du Muscle, UMR5261, Inserm U1315, Faculté de Médecine Rockefeller, Université Claude Bernard UCBL-Lyon 1, 69008 Lyon, France; (N.S.); (T.S.)
| | - Cyril Dégletagne
- CRCL Core Facilities, Centre de Recherche en Cancérologie de Lyon (CRCL) INSERM U1052-CNRS UMR5286, Université de Lyon, Université Claude Bernard Lyon1, Centre Léon Bérard, 69008 Lyon, France; (C.D.); (J.V.)
| | - Nathalie Streichenberger
- Institut NeuroMyoGène INMG-PGNM, Physiopathologie et Génétique du Neurone et du Muscle, UMR5261, Inserm U1315, Faculté de Médecine Rockefeller, Université Claude Bernard UCBL-Lyon 1, 69008 Lyon, France; (N.S.); (T.S.)
- Service d’Anatomopathologie, Centre de Biologie et Pathologie Est (CBPE), Hospices Civils de Lyon, 69500 Bron, France
| | - Julie Valantin
- CRCL Core Facilities, Centre de Recherche en Cancérologie de Lyon (CRCL) INSERM U1052-CNRS UMR5286, Université de Lyon, Université Claude Bernard Lyon1, Centre Léon Bérard, 69008 Lyon, France; (C.D.); (J.V.)
| | - Thomas Simonet
- Institut NeuroMyoGène INMG-PGNM, Physiopathologie et Génétique du Neurone et du Muscle, UMR5261, Inserm U1315, Faculté de Médecine Rockefeller, Université Claude Bernard UCBL-Lyon 1, 69008 Lyon, France; (N.S.); (T.S.)
| | - Laurent Schaeffer
- Institut NeuroMyoGène INMG-PGNM, Physiopathologie et Génétique du Neurone et du Muscle, UMR5261, Inserm U1315, Faculté de Médecine Rockefeller, Université Claude Bernard UCBL-Lyon 1, 69008 Lyon, France; (N.S.); (T.S.)
- Centre de Biotechnologie Cellulaire, CHU de Lyon—HCL Groupement Est, 69677 Bron, France
| | - Pascal Sève
- Département de Médecine Interne, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, 69004 Lyon, France;
- Pôle IMER, HESPER EA 7425, 69002 Lyon, France
| | - Pascal Leblanc
- Institut NeuroMyoGène INMG-PGNM, Physiopathologie et Génétique du Neurone et du Muscle, UMR5261, Inserm U1315, Faculté de Médecine Rockefeller, Université Claude Bernard UCBL-Lyon 1, 69008 Lyon, France; (N.S.); (T.S.)
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Kim YH, Lee YK, Park SS, Park SH, Eom SY, Lee YS, Lee WJ, Jang J, Seo D, Kang HY, Kim JC, Lim SB, Yoon G, Kim HS, Kim JH, Park TJ. Mid-old cells are a potential target for anti-aging interventions in the elderly. Nat Commun 2023; 14:7619. [PMID: 37993434 PMCID: PMC10665435 DOI: 10.1038/s41467-023-43491-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 11/10/2023] [Indexed: 11/24/2023] Open
Abstract
The biological process of aging is thought to result in part from accumulation of senescent cells in organs. However, the present study identified a subset of fibroblasts and smooth muscle cells which are the major constituents of organ stroma neither proliferative nor senescent in tissues of the elderly, which we termed "mid-old status" cells. Upregulation of pro-inflammatory genes (IL1B and SAA1) and downregulation of anti-inflammatory genes (SLIT2 and CXCL12) were detected in mid-old cells. In the stroma, SAA1 promotes development of the inflammatory microenvironment via upregulation of MMP9, which decreases the stability of epithelial cells present on the basement membrane, decreasing epithelial cell function. Remarkably, the microenvironmental change and the functional decline of mid-old cells could be reversed by a young cell-originated protein, SLIT2. Our data identify functional reversion of mid-old cells as a potential method to prevent or ameliorate aspects of aging-related tissue dysfunction.
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Affiliation(s)
- Young Hwa Kim
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
| | - Young-Kyoung Lee
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - Soon Sang Park
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea
| | - So Hyun Park
- Department of Pathology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - So Yeong Eom
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea
- Department of Pathology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - Young-Sam Lee
- Department of New Biology, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988, Korea
| | - Wonhee John Lee
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988, Korea
| | - Juhee Jang
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988, Korea
| | - Daeha Seo
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988, Korea
| | - Hee Young Kang
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Dermatology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - Jin Cheol Kim
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Dermatology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - Su Bin Lim
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea
| | - Gyesoon Yoon
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea
| | - Hong Seok Kim
- Department of Molecular Medicine, College of Medicine, Inha University, Incheon, 22212, Korea
| | - Jang-Hee Kim
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea.
- Department of Pathology, Ajou University School of Medicine, Suwon, 16499, Korea.
| | - Tae Jun Park
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea.
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea.
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea.
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8
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Jameson TSO, Caldow MK, Stephens F, Denehy L, Lynch GS, Koopman R, Krajcova A, Urban T, Berney S, Duska F, Puthucheary Z. Inflammation and altered metabolism impede efficacy of functional electrical stimulation in critically ill patients. Crit Care 2023; 27:428. [PMID: 37932834 PMCID: PMC10629203 DOI: 10.1186/s13054-023-04664-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 09/26/2023] [Indexed: 11/08/2023] Open
Abstract
BACKGROUND Critically ill patients suffer from acute muscle wasting, which is associated with significant physical functional impairment. We describe data from nested muscle biopsy studies from two trials of functional electrical stimulation (FES) that did not shown improvements in physical function. METHODS Primary cohort: single-centre randomized controlled trial. Additional healthy volunteer data from patients undergoing elective hip arthroplasty. Validation cohort: Four-centre randomized controlled trial. INTERVENTION FES cycling for 60-90min/day. ANALYSES Skeletal muscle mRNA expression of 223 genes underwent hierarchal clustering for targeted analysis and validation. RESULTS Positively enriched pathways between healthy volunteers and ICU participants were "stress response", "response to stimuli" and "protein metabolism", in keeping with published data. Positively enriched pathways between admission and day 7 ICU participants were "FOXO-mediated transcription" (admission = 0.48 ± 0.94, day 7 = - 0.47 ± 1.04 mean log2 fold change; P = 0.042), "Fatty acid metabolism" (admission = 0.50 ± 0.67, day 7 = 0.07 ± 1.65 mean log2 fold change; P = 0.042) and "Interleukin-1 processing" (admission = 0.88 ± 0.50, day 7 = 0.97 ± 0.76 mean log2 fold change; P = 0.054). Muscle mRNA expression of UCP3 (P = 0.030) and DGKD (P = 0.040) decreased in both cohorts with no between group differences. Changes in IL-18 were not observed in the validation cohort (P = 0.268). Targeted analyses related to intramuscular mitochondrial substrate oxidation, fatty acid oxidation and intramuscular inflammation showed PPARγ-C1α; (P < 0.001), SLC25A20 (P = 0.017) and UCP3 (P < 0.001) decreased between admission and day 7 in both arms. LPIN-1 (P < 0.001) and SPT1 (P = 0.044) decreased between admission and day 7. IL-18 (P = 0.011) and TNFRSF12A (P = 0.009) increased in both arms between admission and day 7. IL-1β (P = 0.007), its receptor IL-1R1 (P = 0.005) and IL-6R (P = 0.001) decreased in both arms between admission and day 7. No between group differences were seen in any of these (all p > 0.05). CONCLUSIONS Intramuscular inflammation and altered substrate utilization are persistent in skeletal muscle during first week of critical illness and are not improved by the application of Functional Electrical Stimulation-assisted exercise. Future trials of exercise to prevent muscle wasting and physical impairment are unlikely to be successful unless these processes are addressed by other means than exercise alone.
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Affiliation(s)
- T S O Jameson
- Nutritional Physiology Group, Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, Devon, UK
| | - M K Caldow
- Centre for Muscle Research, Department of Anatomy and Physiology, The University of Melbourne, Melbourne, VIC, Australia
| | - F Stephens
- Nutritional Physiology Group, Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, Devon, UK
| | - L Denehy
- Department of Physiotherapy, School of Health Sciences, The University of Melbourne, Melbourne, Australia
| | - G S Lynch
- Centre for Muscle Research, Department of Anatomy and Physiology, The University of Melbourne, Melbourne, VIC, Australia
| | - R Koopman
- Centre for Muscle Research, Department of Anatomy and Physiology, The University of Melbourne, Melbourne, VIC, Australia
| | - A Krajcova
- Department of Anaesthesia and Intensive Care Medicine, Third Faculty of Medicine, Charles University, FNKV University Hospital, Srobarova 50, 10034, Prague, Czech Republic
| | - T Urban
- Department of Anaesthesia and Intensive Care Medicine, Third Faculty of Medicine, Charles University, FNKV University Hospital, Srobarova 50, 10034, Prague, Czech Republic
| | - S Berney
- Department of Physiotherapy, School of Health Sciences, The University of Melbourne, Melbourne, Australia
- Department of Physiotherapy Division of Allied, Health Austin Health, Austin, TX, USA
| | - F Duska
- Department of Anaesthesia and Intensive Care Medicine, Third Faculty of Medicine, Charles University, FNKV University Hospital, Srobarova 50, 10034, Prague, Czech Republic.
| | - Z Puthucheary
- William Harvey Research Institute, Barts and The London School of Medicine, Queen Mary University of London, London, UK
- Adult Critical Care Unit, Royal London Hospital Barts Health NHS Trust, London, UK
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9
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Robinson TP, Hamidi T, Counts B, Guttridge DC, Ostrowski MC, Zimmers TA, Koniaris LG. The impact of inflammation and acute phase activation in cancer cachexia. Front Immunol 2023; 14:1207746. [PMID: 38022578 PMCID: PMC10644737 DOI: 10.3389/fimmu.2023.1207746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 10/13/2023] [Indexed: 12/01/2023] Open
Abstract
The development of cachexia in the setting of cancer or other chronic diseases is a significant detriment for patients. Cachexia is associated with a decreased ability to tolerate therapies, reduction in ambulation, reduced quality of life, and increased mortality. Cachexia appears intricately linked to the activation of the acute phase response and is a drain on metabolic resources. Work has begun to focus on the important inflammatory factors associated with the acute phase response and their role in the immune activation of cachexia. Furthermore, data supporting the liver, lung, skeletal muscle, and tumor as all playing a role in activation of the acute phase are emerging. Although the acute phase is increasingly being recognized as being involved in cachexia, work in understanding underlying mechanisms of cachexia associated with the acute phase response remains an active area of investigation and still lack a holistic understanding and a clear causal link. Studies to date are largely correlative in nature, nonetheless suggesting the possibility for a role for various acute phase reactants. Herein, we examine the current literature regarding the acute phase response proteins, the evidence these proteins play in the promotion and exacerbation of cachexia, and current evidence of a therapeutic potential for patients.
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Affiliation(s)
- Tyler P. Robinson
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Tewfik Hamidi
- Department of Surgery, Oregon Health Sciences University, Portland, OR, United States
| | - Brittany Counts
- Department of Surgery, Oregon Health Sciences University, Portland, OR, United States
| | - Denis C. Guttridge
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States
| | - Michael C. Ostrowski
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States
| | - Teresa A. Zimmers
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
- Department of Surgery, Oregon Health Sciences University, Portland, OR, United States
| | - Leonidas G. Koniaris
- Department of Surgery, Oregon Health Sciences University, Portland, OR, United States
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10
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Affiliation(s)
- Alberto Mantovani
- From IRCCS Humanitas Research Hospital, Rozzano, and the Department of Biomedical Sciences, Humanitas University, Pieve Emanuele - both in Milan (A.M., C.G.); and William Harvey Research Institute, Queen Mary University, London (A.M.)
| | - Cecilia Garlanda
- From IRCCS Humanitas Research Hospital, Rozzano, and the Department of Biomedical Sciences, Humanitas University, Pieve Emanuele - both in Milan (A.M., C.G.); and William Harvey Research Institute, Queen Mary University, London (A.M.)
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11
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Schneider J, Sundaravinayagam D, Blume A, Marg A, Grunwald S, Metzler E, Escobar H, Müthel S, Wang H, Wollersheim T, Weber-Carstens S, Akalin A, Di Virgilio M, Tursun B, Spuler S. Disintegration of the NuRD Complex in Primary Human Muscle Stem Cells in Critical Illness Myopathy. Int J Mol Sci 2023; 24:2772. [PMID: 36769095 PMCID: PMC9916927 DOI: 10.3390/ijms24032772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/19/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
Critical illness myopathy (CIM) is an acquired, devastating, multifactorial muscle-wasting disease with incomplete recovery. The impact on hospital costs and permanent loss of quality of life is enormous. Incomplete recovery might imply that the function of muscle stem cells (MuSC) is impaired. We tested whether epigenetic alterations could be in part responsible. We characterized human muscle stem cells (MuSC) isolated from early CIM and analyzed epigenetic alterations (CIM n = 15, controls n = 21) by RNA-Seq, immunofluorescence, analysis of DNA repair, and ATAC-Seq. CIM-MuSC were transplanted into immunodeficient NOG mice to assess their regenerative potential. CIM-MuSC exhibited significant growth deficits, reduced ability to differentiate into myotubes, and impaired DNA repair. The chromatin structure was damaged, as characterized by alterations in mRNA of histone 1, depletion or dislocation of core proteins of nucleosome remodeling and deacetylase complex, and loosening of multiple nucleosome-spanning sites. Functionally, CIM-MuSC had a defect in building new muscle fibers. Further, MuSC obtained from the electrically stimulated muscle of CIM patients was very similar to control MuSC, indicating the impact of muscle contraction in the onset of CIM. CIM not only affects working skeletal muscle but has a lasting and severe epigenetic impact on MuSC.
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Affiliation(s)
- Joanna Schneider
- Muscle Research Unit, Experimental and Clinical Research Center, A Joint Cooperation of the Charité Universitätsmedizin Berlin and the Max Delbrück Center for Molecular Medicine in the Helmholtz Society, Lindenberger Weg 80, 13125 Berlin, Germany
- Charité Universitätsmedizin Berlin, Department of Pediatric Neurology, 13353 Berlin, Germany
- Berlin Institute of Health–Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Devakumar Sundaravinayagam
- Laboratory of DNA Repair and Maintenance of Genome Stability, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13092 Berlin, Germany
| | - Alexander Blume
- Berlin Institute of Medical Systems Biology (BIMSB), Max Delbruck Center for Molecular Medicine in the Helmholtz Association, 10115 Berlin, Germany
| | - Andreas Marg
- Muscle Research Unit, Experimental and Clinical Research Center, A Joint Cooperation of the Charité Universitätsmedizin Berlin and the Max Delbrück Center for Molecular Medicine in the Helmholtz Society, Lindenberger Weg 80, 13125 Berlin, Germany
| | - Stefanie Grunwald
- Muscle Research Unit, Experimental and Clinical Research Center, A Joint Cooperation of the Charité Universitätsmedizin Berlin and the Max Delbrück Center for Molecular Medicine in the Helmholtz Society, Lindenberger Weg 80, 13125 Berlin, Germany
| | - Eric Metzler
- Muscle Research Unit, Experimental and Clinical Research Center, A Joint Cooperation of the Charité Universitätsmedizin Berlin and the Max Delbrück Center for Molecular Medicine in the Helmholtz Society, Lindenberger Weg 80, 13125 Berlin, Germany
| | - Helena Escobar
- Muscle Research Unit, Experimental and Clinical Research Center, A Joint Cooperation of the Charité Universitätsmedizin Berlin and the Max Delbrück Center for Molecular Medicine in the Helmholtz Society, Lindenberger Weg 80, 13125 Berlin, Germany
| | - Stefanie Müthel
- Muscle Research Unit, Experimental and Clinical Research Center, A Joint Cooperation of the Charité Universitätsmedizin Berlin and the Max Delbrück Center for Molecular Medicine in the Helmholtz Society, Lindenberger Weg 80, 13125 Berlin, Germany
- Berlin Institute of Medical Systems Biology (BIMSB), Max Delbruck Center for Molecular Medicine in the Helmholtz Association, 10115 Berlin, Germany
| | - Haicui Wang
- Muscle Research Unit, Experimental and Clinical Research Center, A Joint Cooperation of the Charité Universitätsmedizin Berlin and the Max Delbrück Center for Molecular Medicine in the Helmholtz Society, Lindenberger Weg 80, 13125 Berlin, Germany
| | - Tobias Wollersheim
- Berlin Institute of Health–Universitätsmedizin Berlin, 10117 Berlin, Germany
- Charité Universitätsmedizin Berlin, Department of Anesthesiology and Operative Intensive Care Medicine, 13353 Berlin, Germany
| | - Steffen Weber-Carstens
- Charité Universitätsmedizin Berlin, Department of Anesthesiology and Operative Intensive Care Medicine, 13353 Berlin, Germany
| | - Altuna Akalin
- Berlin Institute of Medical Systems Biology (BIMSB), Max Delbruck Center for Molecular Medicine in the Helmholtz Association, 10115 Berlin, Germany
| | - Michela Di Virgilio
- Laboratory of DNA Repair and Maintenance of Genome Stability, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13092 Berlin, Germany
| | - Baris Tursun
- Berlin Institute of Medical Systems Biology (BIMSB), Max Delbruck Center for Molecular Medicine in the Helmholtz Association, 10115 Berlin, Germany
| | - Simone Spuler
- Muscle Research Unit, Experimental and Clinical Research Center, A Joint Cooperation of the Charité Universitätsmedizin Berlin and the Max Delbrück Center for Molecular Medicine in the Helmholtz Society, Lindenberger Weg 80, 13125 Berlin, Germany
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12
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Walsh CJ, Batt J, Herridge MS, Mathur S, Bader GD, Hu P, Khatri P, Dos Santos CC. Comprehensive multi-cohort transcriptional meta-analysis of muscle diseases identifies a signature of disease severity. Sci Rep 2022; 12:11260. [PMID: 35789175 PMCID: PMC9253003 DOI: 10.1038/s41598-022-15003-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 05/03/2022] [Indexed: 11/09/2022] Open
Abstract
Muscle diseases share common pathological features suggesting common underlying mechanisms. We hypothesized there is a common set of genes dysregulated across muscle diseases compared to healthy muscle and that these genes correlate with severity of muscle disease. We performed meta-analysis of transcriptional profiles of muscle biopsies from human muscle diseases and healthy controls. Studies obtained from public microarray repositories fulfilling quality criteria were divided into six categories: (i) immobility, (ii) inflammatory myopathies, (iii) intensive care unit (ICU) acquired weakness (ICUAW), (iv) congenital muscle diseases, (v) chronic systemic diseases, (vi) motor neuron disease. Patient cohorts were separated in discovery and validation cohorts retaining roughly equal proportions of samples for the disease categories. To remove bias towards a specific muscle disease category we repeated the meta-analysis five times by removing data sets corresponding to one muscle disease class at a time in a "leave-one-disease-out" analysis. We used 636 muscle tissue samples from 30 independent cohorts to identify a 52 gene signature (36 up-regulated and 16 down-regulated genes). We validated the discriminatory power of this signature in 657 muscle biopsies from 12 additional patient cohorts encompassing five categories of muscle diseases with an area under the receiver operating characteristic curve of 0.91, 83% sensitivity, and 85.3% specificity. The expression score of the gene signature inversely correlated with quadriceps muscle mass (r = -0.50, p-value = 0.011) in ICUAW and shoulder abduction strength (r = -0.77, p-value = 0.014) in amyotrophic lateral sclerosis (ALS). The signature also positively correlated with histologic assessment of muscle atrophy in ALS (r = 0.88, p-value = 1.62 × 10-3) and fibrosis in muscular dystrophy (Jonckheere trend test p-value = 4.45 × 10-9). Our results identify a conserved transcriptional signature associated with clinical and histologic muscle disease severity. Several genes in this conserved signature have not been previously associated with muscle disease severity.
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Affiliation(s)
- C J Walsh
- Keenan Research Center for Biomedical Science, Saint Michael's Hospital, Toronto, ON, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
| | - J Batt
- Keenan Research Center for Biomedical Science, Saint Michael's Hospital, Toronto, ON, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
| | - M S Herridge
- Interdepartmental Division of Critical Care, University Health Network, University of Toronto, Toronto, ON, Canada
| | - S Mathur
- Department of Physical Therapy, University of Toronto, Toronto, ON, Canada
| | - G D Bader
- The Donnelly Center, University of Toronto, Toronto, ON, Canada
| | - P Hu
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada
| | - P Khatri
- Stanford Institute for Immunity, Transplantation and Infection (ITI), Stanford University School of Medicine, Stanford, CA, USA.,Department of Medicine, Stanford Center for Biomedical Informatics Research (BMIR), Stanford University, Stanford, CA, USA
| | - C C Dos Santos
- Keenan Research Center for Biomedical Science, Saint Michael's Hospital, Toronto, ON, Canada. .,Interdepartmental Division of Critical Care, University of Toronto, Toronto, ON, Canada.
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13
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Zhao K, Li X, Zhang M, Tong F, Chen H, Wang X, Xiu N, Liu Z, Wang Y. microRNA-181a Promotes Mitochondrial Dysfunction and Inflammatory Reaction in a Rat Model of Intensive Care Unit-Acquired Weakness by Inhibiting IGFBP5 Expression. J Neuropathol Exp Neurol 2022; 81:553-564. [PMID: 35472240 DOI: 10.1093/jnen/nlac024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study investigated mechanisms by which microRNA (miR)-181a orchestrates mitochondrial dysfunction and inflammation in a rat model of intensive care unit-acquired weakness (ICU-AW). Expression of miR-181a and insulin-like growth factor binding protein 5 (IGFBP5) was detected and then miR-181a was overexpressed or inhibited and IGFBP5 was overexpressed in the ICU-AW rats. The expression of UCP-3, metaphase chromosome protein 1 (MCP1), mitochondrial DNA (mtDNA), inflammatory factors, phosphorylation (p)-JAK1, p-STAT1, and p-STAT2 were measured in skeletal muscle tissues; binding of miR-181a to IGFBP5 was evaluated by a dual-luciferase reporter assay. The results demonstrated high expression of miR-181a and low expression of IGFBP5 in ICU-AW versus control rats; IGFBP5 was identified as a target gene of miR-181a. Further experiments demonstrated that ICU-AW rats suffered from marked loss of grip strength and decreased adenosine triphosphate production, mtDNA content, and UCP-3 mRNA expression in skeletal muscles; this was accompanied by elevated TNF-α, IL-6, IL-1β, MCP1, p-JAK1, p-STAT1, and p-STAT2 levels. Importantly, miR-181a suppression alleviated strength loss, inflammatory reaction, and mitochondrial dysfunction and diminished the phosphorylation levels of JAK1, STAT1, and STAT2 whereas IGFBP5 upregulation rescued the effect of miR-181a overexpression in ICU-AW rats. These results indicate that miR-181a promotes mitochondrial dysfunction and inflammation by activating the JAK/STAT pathway via IGFBP5 in ICU-AW model rats.
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Affiliation(s)
- Kun Zhao
- Intensive Care Unit, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Xuan Li
- Intensive Care Unit, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Manli Zhang
- Intensive Care Unit, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Fei Tong
- Intensive Care Unit, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Hui Chen
- Intensive Care Unit, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Xia Wang
- Intensive Care Unit, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Nan Xiu
- Intensive Care Unit, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Zhikuan Liu
- Intensive Care Unit, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China
| | - Yi Wang
- Department of Ultrasound, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China (YW)
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14
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Chapple LAS, Kouw IWK, Summers MJ, Weinel LM, Gluck S, Raith E, Slobodian P, Soenen S, Deane AM, van Loon LJC, Chapman MJ. Muscle Protein Synthesis Following Protein Administration in Critical Illness. Am J Respir Crit Care Med 2022; 206:740-749. [PMID: 35584344 DOI: 10.1164/rccm.202112-2780oc] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Rationale Dietary protein may attenuate the muscle atrophy experienced by patients in the Intensive Care Unit (ICU), yet protein handling is poorly understood. Objective To quantify protein digestion and amino acid absorption, and fasting and postprandial myofibrillar protein synthesis during critical illness. Methods Fifteen mechanically ventilated adults (12M; age 50±17y, Body Mass Index (BMI) 27±5kg·m-2) and 10 healthy controls (6M; 54±23y, BMI 27±4kg·m-2) received a primed intravenous L-[ring-2H5]-phenylalanine, L-[3,5-2H2]-tyrosine, and L-[1-13C]-leucine infusion over 9.5h, and a duodenal bolus of intrinsically-labelled (L-[1-13C]-phenylalanine and L-[1-13C]-leucine) intact milk protein (20g protein) over 60min. Arterial blood and muscle samples were taken at baseline (fasting) and for 6h following duodenal protein administration. Data are mean±SD; analysed with 2-way repeated measures ANOVA and independent samples t-test. Measurements and main results Fasting myofibrillar protein synthesis rates did not differ between ICU patients and healthy controls (0.023±0.013 vs 0.034±0.016%/h; P=0.077). Following protein administration, plasma amino acid availability did not differ between groups (ICU patients 54.2±9.1 vs healthy controls 61.8±13.1%; P=0.12), and myofibrillar protein synthesis rates increased in both groups (0.028±0.010 vs 0.043±0.018 %/h, main time effect P=0.046, P-interaction=0.584) with lower rates in ICU patients compared to healthy controls (main group effect P=0.001). Incorporation of protein-derived phenylalanine into myofibrillar protein was ~60% lower in ICU patients (0.007±0.007 vs 0.017±0.009 mole % excess (MPE); P=0.007). Conclusion The capacity for critically ill patients to use ingested protein for muscle protein synthesis is markedly blunted despite relatively normal protein digestion and amino acid absorption.
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Affiliation(s)
- Lee-Anne S Chapple
- Royal Adelaide Hospital, 1062, Intensive Care Unit, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Adelaide Medical School, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, South Australia, Australia;
| | - Imre W K Kouw
- Royal Adelaide Hospital, 1062, Intensive Care Unit, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Adelaide Medical School, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, South Australia, Australia.,Maastricht University Medical Centre+, 199236, Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht, Limburg, Netherlands
| | - Matthew J Summers
- Royal Adelaide Hospital, 1062, Intensive Care Unit, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Adelaide Medical School, Adelaide, South Australia, Australia
| | - Luke M Weinel
- Royal Adelaide Hospital, 1062, Intensive Care Unit, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Adelaide Medical School, Adelaide, South Australia, Australia
| | - Samuel Gluck
- Royal Adelaide Hospital, 1062, Intensive Care Unit, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Adelaide Medical School, Adelaide, South Australia, Australia
| | - Eamon Raith
- Royal Adelaide Hospital, 1062, Intensive Care Unit, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Adelaide Medical School, Adelaide, South Australia, Australia
| | - Peter Slobodian
- Central Adelaide Local Health Network, 375072, Pharmacy, Adelaide, South Australia, Australia
| | - Stijn Soenen
- The University of Adelaide, 1066, Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, South Australia, Australia.,Bond University Faculty of Health Sciences and Medicine, 104559, Gold Coast, Queensland, Australia
| | - Adam M Deane
- The University of Melbourne, 2281, Melbourne Medical School, Department of Critical Care, Melbourne, Victoria, Australia
| | - Luc J C van Loon
- NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Department of Human Biology, Maastricht, Netherlands
| | - Marianne J Chapman
- Royal Adelaide Hospital, Intensive Care Unit, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Adelaide Medical School, Adelaide, South Australia, Australia.,The University of Adelaide, 1066, Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide, South Australia, Australia
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15
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Kny M, Fielitz J. Hidden Agenda - The Involvement of Endoplasmic Reticulum Stress and Unfolded Protein Response in Inflammation-Induced Muscle Wasting. Front Immunol 2022; 13:878755. [PMID: 35615361 PMCID: PMC9124858 DOI: 10.3389/fimmu.2022.878755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
Critically ill patients at the intensive care unit (ICU) often develop a generalized weakness, called ICU-acquired weakness (ICUAW). A major contributor to ICUAW is muscle atrophy, a loss of skeletal muscle mass and function. Skeletal muscle assures almost all of the vital functions of our body. It adapts rapidly in response to physiological as well as pathological stress, such as inactivity, immobilization, and inflammation. In response to a reduced workload or inflammation muscle atrophy develops. Recent work suggests that adaptive or maladaptive processes in the endoplasmic reticulum (ER), also known as sarcoplasmic reticulum, contributes to this process. In muscle cells, the ER is a highly specialized cellular organelle that assures calcium homeostasis and therefore muscle contraction. The ER also assures correct folding of proteins that are secreted or localized to the cell membrane. Protein folding is a highly error prone process and accumulation of misfolded or unfolded proteins can cause ER stress, which is counteracted by the activation of a signaling network known as the unfolded protein response (UPR). Three ER membrane residing molecules, protein kinase R-like endoplasmic reticulum kinase (PERK), inositol requiring protein 1a (IRE1a), and activating transcription factor 6 (ATF6) initiate the UPR. The UPR aims to restore ER homeostasis by reducing overall protein synthesis and increasing gene expression of various ER chaperone proteins. If ER stress persists or cannot be resolved cell death pathways are activated. Although, ER stress-induced UPR pathways are known to be important for regulation of skeletal muscle mass and function as well as for inflammation and immune response its function in ICUAW is still elusive. Given recent advances in the development of ER stress modifying molecules for neurodegenerative diseases and cancer, it is important to know whether or not therapeutic interventions in ER stress pathways have favorable effects and these compounds can be used to prevent or treat ICUAW. In this review, we focus on the role of ER stress-induced UPR in skeletal muscle during critical illness and in response to predisposing risk factors such as immobilization, starvation and inflammation as well as ICUAW treatment to foster research for this devastating clinical problem.
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Affiliation(s)
- Melanie Kny
- Experimental and Clinical Research Center (ECRC), Charité-Universitätsmedizin Berlin, Max Delbrück Center (MDC) for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Jens Fielitz
- Department of Molecular Cardiology, DZHK (German Center for Cardiovascular Research), Partner Site, Greifswald, Germany
- Department of Internal Medicine B, Cardiology, University Medicine Greifswald, Greifswald, Germany
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16
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The effect of lipoic acid on the content of SOD-1 and TNF-α in rat striated muscle. POSTEP HIG MED DOSW 2022. [DOI: 10.2478/ahem-2021-0051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Background
The aim of the study was to present the effect of lipoic acid (LA) on oxidative stress induced by lipopolysaccharide (LPS).
Materials/Methods
The studies were conducted on male rats of the Wistar strain. The animals were divided into four groups. I: the controls received saline (0.2 ml); II: LPS, received LPS (Escherichia coli 026: B6) at a dose of 6 mg/kg body weight; III: LA, received LA at a dose of 60 mg/kg body weight; IV: LA + LPS, received LA (60 mg/kg b.w.) and after 30 min received LPS (6 mg/kg b.w.). All compounds were administered to the tail vein. After 5 hours of the experiment, the animals were anesthetized and striated muscle from the thigh was prepared. The isolated muscle was homogenized. Concentrations of superoxide dismutase-1 (SOD-1) and tumor necrosis factor alpha (TNF-α) were determined in the homogenates with the application of ELISA.
Results
The study showed a significant decrease in SOD-1 content and an increase in TNF-α in striated muscle after LPS administration. LA given 30 min before administration of LPS caused a significant increase in the level of SOD-1 and decreased levels of TNF-α in homogenates.
Conclusion
LA reduced the parameters of LPS oxidative stress, thus contributing to an increase in the body's antioxidant defense.
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17
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Zanders L, Kny M, Hahn A, Schmidt S, Wundersitz S, Todiras M, Lahmann I, Bandyopadhyay A, Wollersheim T, Kaderali L, Luft FC, Birchmeier C, Weber-Carstens S, Fielitz J. Sepsis induces interleukin 6, gp130/JAK2/STAT3, and muscle wasting. J Cachexia Sarcopenia Muscle 2022; 13:713-727. [PMID: 34821076 PMCID: PMC8818599 DOI: 10.1002/jcsm.12867] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/18/2021] [Accepted: 10/20/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Sepsis and inflammation can cause intensive care unit-acquired weakness (ICUAW). Increased interleukin-6 (IL-6) plasma levels are a risk factor for ICUAW. IL-6 signalling involves the glycoprotein 130 (gp130) receptor and the JAK/STAT-pathway, but its role in sepsis-induced muscle wasting is uncertain. In a clinical observational study, we found that the IL-6 target gene, SOCS3, was increased in skeletal muscle of ICUAW patients indicative for JAK/STAT-pathway activation. We tested the hypothesis that the IL-6/gp130-pathway mediates ICUAW muscle atrophy. METHODS We sequenced RNA (RNAseq) from tibialis anterior (TA) muscle of cecal ligation and puncture-operated (CLP) and sham-operated wildtype (WT) mice. The effects of the IL-6/gp130/JAK2/STAT3-pathway were investigated by analysing the atrophy phenotype, gene expression, and protein contents of C2C12 myotubes. Mice lacking Il6st, encoding gp130, in myocytes (cKO) and WT controls, as well as mice treated with the JAK2 inhibitor AG490 or vehicle were exposed to CLP or sham surgery for 24 or 96 h. RESULTS Analyses of differentially expressed genes in RNAseq (≥2-log2-fold change, P < 0.01) revealed an activation of IL-6-signalling and JAK/STAT-signalling pathways in muscle of septic mice, which occurred after 24 h and lasted at least for 96 h during sepsis. IL-6 treatment of C2C12 myotubes induced STAT3 phosphorylation (three-fold, P < 0.01) and Socs3 mRNA expression (3.1-fold, P < 0.01) and caused myotube atrophy. Knockdown of Il6st diminished IL-6-induced STAT3 phosphorylation (-30.0%; P < 0.01), Socs3 mRNA expression, and myotube atrophy. JAK2 (- 29.0%; P < 0.01) or STAT3 inhibition (-38.7%; P < 0.05) decreased IL-6-induced Socs3 mRNA expression. Treatment with either inhibitor attenuated myotube atrophy in response to IL-6. CLP-operated septic mice showed an increased STAT3 phosphorylation and Socs3 mRNA expression in TA muscle, which was reduced in septic Il6st-cKO mice by 67.8% (P < 0.05) and 85.6% (P < 0.001), respectively. CLP caused a loss of TA muscle weight, which was attenuated in Il6st-cKO mice (WT: -22.3%, P < 0.001, cKO: -13.5%, P < 0.001; WT vs. cKO P < 0.001). While loss of Il6st resulted in a reduction of MuRF1 protein contents, Atrogin-1 remained unchanged between septic WT and cKO mice. mRNA expression of Trim63/MuRF1 and Fbxo32/Atrogin-1 were unaltered between CLP-treated WT and cKO mice. AG490 treatment reduced STAT3 phosphorylation (-22.2%, P < 0.05) and attenuated TA muscle atrophy in septic mice (29.6% relative reduction of muscle weight loss, P < 0.05). The reduction in muscle atrophy was accompanied by a reduction in Fbxo32/Atrogin-1-mRNA (-81.3%, P < 0.05) and Trim63/MuRF1-mRNA expression (-77.6%, P < 0.05) and protein content. CONCLUSIONS IL-6 via the gp130/JAK2/STAT3-pathway mediates sepsis-induced muscle atrophy possibly contributing to ICUAW.
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Affiliation(s)
- Lukas Zanders
- Experimental and Clinical Research Center (ECRC), Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany.,DZHK (German Center for Cardiovascular Research), partner site Berlin, Berlin, Germany.,Department of Cardiology, Charité Campus Benjamin Franklin, Berlin, Germany
| | - Melanie Kny
- Experimental and Clinical Research Center (ECRC), Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Alexander Hahn
- Experimental and Clinical Research Center (ECRC), Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Sibylle Schmidt
- Experimental and Clinical Research Center (ECRC), Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Sebastian Wundersitz
- Experimental and Clinical Research Center (ECRC), Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Mihail Todiras
- Cardiovascular hormones, Max Delbrück Center (MDC) for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,Nicolae Testemiţanu State University of Medicine and Pharmacy, Chișinău, Moldova
| | - Ines Lahmann
- Developmental Biology/Signal Transduction, Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
| | - Arnab Bandyopadhyay
- Institute of Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | - Tobias Wollersheim
- Anesthesiology and operative Intensive Care Medicine, Charité Campus Virchow and Campus Mitte, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Lars Kaderali
- Institute of Bioinformatics, University Medicine Greifswald, Greifswald, Germany.,DZHK (German Center for Cardiovascular Research), partner site Greifswald, Greifswald, Germany
| | - Friedrich C Luft
- Experimental and Clinical Research Center (ECRC), Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany
| | - Carmen Birchmeier
- Developmental Biology/Signal Transduction, Max-Delbrück-Center for Molecular Medicine, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Steffen Weber-Carstens
- Anesthesiology and operative Intensive Care Medicine, Charité Campus Virchow and Campus Mitte, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Jens Fielitz
- Experimental and Clinical Research Center (ECRC), Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany.,DZHK (German Center for Cardiovascular Research), partner site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, Cardiology, University Medicine Greifswald, Greifswald, Germany
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18
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Adapted Murine Sepsis Score: Improving the Research in Experimental Sepsis Mouse Model. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5700853. [PMID: 35127944 PMCID: PMC8814713 DOI: 10.1155/2022/5700853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 12/16/2021] [Accepted: 01/03/2022] [Indexed: 11/18/2022]
Abstract
The Murine Sepsis Score (MSS) is used to assess the severity of sepsis in rats and mice based on observational characteristics. The quantitative variables of glycemia, body weight, and temperature are predictors of severity in experimental models of sepsis. Therefore, our study sought to adapt the MSS with the same variables to indicate earlier the severity of the disease in murine models of the disease. Sepsis mice presented hypoglycemia, weight loss, and hypothermia. Therefore, these variables were included in the Adapted Murine Sepsis Score (A-MSS). The A-MASS presented 100% specificity and 87.5% sensibility been able to differentiate the early sepsis symptoms and its severity. The A-MSS allows an early and more complete diagnosis of sepsis in mice and might be considered as a procedure to improve the analysis of systemic sepsis dysfunction in murine experimental models.
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19
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Mohamadi A, Moravejolahkami AR, Askari G, Tarrahi MJ, Hajiesmaeili M, Bahreini-Esfahani N. Alpha-lipoic acid did not affect lipid profile and blood pressure in critically ill patients: A randomized, double-blind clinical trial. MEDITERRANEAN JOURNAL OF NUTRITION AND METABOLISM 2021. [DOI: 10.3233/mnm-211547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND: Some researchers suggested a positive effect of Alpha-Lipoic Acid (ALA) on Blood Pressure (BP) and lipid profile. OBJECTIVE: The aim of this study was to determine the efficacy of ALA for improving BP and lipid profile in critically ill patients. METHODS: In the present study, eighty patients (aged 18–80 years old) were randomly assigned to receive daily either ALA (600 mg/day) or placebo for eight weeks. Systolic BP (SBP), Diastolic BP (DBP), Triglyceride (TG), Total cholesterol (TC), Low Density Lipoprotein (LDL), and High Density Lipoprotein (HDL) were measured before and after intervention. RESULTS: LDL decreased significantly in the ALA group (110.6±34.9 vs. 107.9±33.4 mg/dl; P < 0.05). There was also a significant difference in terms of HDL in both groups (Δ= +1.8 vs. Δ= –0.3 mg/dl; P < 0.05). A marginal non-significant reduction was also observed for SBP. There were no significant differences in other variables between the two groups. CONCLUSIONS: ALA supplementation did not improve the BP and some serum lipid markers in critically ill patients. Larger and longer trials will be needed to determine efficacy of ALA.
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Affiliation(s)
- Azam Mohamadi
- M. Sc. of Nutrition, Department of Community Nutrition, School of Nutrition & Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Amir Reza Moravejolahkami
- Ph.D.Candidate of Nutrition, Department of Clinical Nutrition, School of Nutrition & Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Gholamreza Askari
- Associate Prof. of Nutrition, Department of Community Nutrition, School of Nutrition & Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Javad Tarrahi
- Associate Prof. of Epidemiology, Department ofEpidemiology and Biostatistics, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammadreza Hajiesmaeili
- Assistant Prof. of Anesthesiology & Critical Care, Anesthesiology Research Center, Anesthesia and Critical Care Department, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nimah Bahreini-Esfahani
- Assistant Prof. of Nutrition, Department of Community Nutrition, School of Nutrition & Food Science, IsfahanUniversity of Medical Sciences, Isfahan, Iran
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20
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Martín-Vicente P, López-Martínez C, Lopez-Alonso I, López-Aguilar J, Albaiceta GM, Amado-Rodríguez L. Molecular mechanisms of postintensive care syndrome. Intensive Care Med Exp 2021; 9:58. [PMID: 34859298 PMCID: PMC8639215 DOI: 10.1186/s40635-021-00423-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 11/16/2021] [Indexed: 11/10/2022] Open
Affiliation(s)
- Paula Martín-Vicente
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Madrid, Spain
| | - Cecilia López-Martínez
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Madrid, Spain
| | - Inés Lopez-Alonso
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Madrid, Spain.,Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain
| | - Josefina López-Aguilar
- Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Madrid, Spain.,Critical Care Center, Hospital Universitari Parc Taulí, Institut d'Investigació I Innovació Parc Taulí I3PT, Sabadell, Spain
| | - Guillermo M Albaiceta
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain. .,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Madrid, Spain. .,Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain. .,Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Oviedo, Spain.
| | - Laura Amado-Rodríguez
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain. .,Centro de Investigación Biomédica en Red (CIBER)-Enfermedades Respiratorias, Madrid, Spain. .,Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, Oviedo, Spain. .,Unidad de Cuidados Intensivos Cardiológicos, Hospital Universitario Central de Asturias, Oviedo, Spain.
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21
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Haberecht-Müller S, Krüger E, Fielitz J. Out of Control: The Role of the Ubiquitin Proteasome System in Skeletal Muscle during Inflammation. Biomolecules 2021; 11:biom11091327. [PMID: 34572540 PMCID: PMC8468834 DOI: 10.3390/biom11091327] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/01/2021] [Accepted: 09/03/2021] [Indexed: 02/07/2023] Open
Abstract
The majority of critically ill intensive care unit (ICU) patients with severe sepsis develop ICU-acquired weakness (ICUAW) characterized by loss of muscle mass, reduction in myofiber size and decreased muscle strength leading to persisting physical impairment. This phenotype results from a dysregulated protein homeostasis with increased protein degradation and decreased protein synthesis, eventually causing a decrease in muscle structural proteins. The ubiquitin proteasome system (UPS) is the predominant protein-degrading system in muscle that is activated during diverse muscle atrophy conditions, e.g., inflammation. The specificity of UPS-mediated protein degradation is assured by E3 ubiquitin ligases, such as atrogin-1 and MuRF1, which target structural and contractile proteins, proteins involved in energy metabolism and transcription factors for UPS-dependent degradation. Although the regulation of activity and function of E3 ubiquitin ligases in inflammation-induced muscle atrophy is well perceived, the contribution of the proteasome to muscle atrophy during inflammation is still elusive. During inflammation, a shift from standard- to immunoproteasome was described; however, to which extent this contributes to muscle wasting and whether this changes targeting of specific muscular proteins is not well described. This review summarizes the function of the main proinflammatory cytokines and acute phase response proteins and their signaling pathways in inflammation-induced muscle atrophy with a focus on UPS-mediated protein degradation in muscle during sepsis. The regulation and target-specificity of the main E3 ubiquitin ligases in muscle atrophy and their mode of action on myofibrillar proteins will be reported. The function of the standard- and immunoproteasome in inflammation-induced muscle atrophy will be described and the effects of proteasome-inhibitors as treatment strategies will be discussed.
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Affiliation(s)
- Stefanie Haberecht-Müller
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, 17475 Greifswald, Germany;
| | - Elke Krüger
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, 17475 Greifswald, Germany;
- Correspondence: (E.K.); (J.F.)
| | - Jens Fielitz
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, 17475 Greifswald, Germany
- Department of Internal Medicine B, Cardiology, University Medicine Greifswald, 17475 Greifswald, Germany
- Correspondence: (E.K.); (J.F.)
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22
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Laitano O, Pindado J, Valera I, Spradlin RA, Murray KO, Villani KR, Alzahrani JM, Ryan TE, Efron PA, Ferreira LF, Barton ER, Clanton TL. The impact of hindlimb disuse on sepsis-induced myopathy in mice. Physiol Rep 2021; 9:e14979. [PMID: 34309237 PMCID: PMC8311555 DOI: 10.14814/phy2.14979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 06/29/2021] [Indexed: 11/24/2022] Open
Abstract
Sepsis induces a myopathy characterized by loss of muscle mass and weakness. Septic patients undergo prolonged periods of limb muscle disuse due to bed rest. The contribution of limb muscle disuse to the myopathy phenotype remains poorly described. To characterize sepsis-induced myopathy with hindlimb disuse, we combined the classic sepsis model via cecal ligation and puncture (CLP) with the disuse model of hindlimb suspension (HLS) in mice. Male C57bl/6j mice underwent CLP or SHAM surgeries. Four days after surgeries, mice underwent HLS or normal ambulation (NA) for 7 days. Soleus (SOL) and extensor digitorum longus (EDL) were dissected for in vitro muscle mechanics, morphological, and histological assessments. In SOL muscles, both CLP+NA and SHAM+HLS conditions elicited ~20% reduction in specific force (p < 0.05). When combined, CLP+HLS elicited ~35% decrease in specific force (p < 0.05). Loss of maximal specific force (~8%) was evident in EDL muscles only in CLP+HLS mice (p < 0.05). CLP+HLS reduced muscle fiber cross-sectional area (CSA) and mass in SOL (p < 0.05). In EDL muscles, CLP+HLS decreased absolute mass to a smaller extent (p < 0.05) with no changes in CSA. Immunohistochemistry revealed substantial myeloid cell infiltration (CD68+) in SOL, but not in EDL muscles, of CLP+HLS mice (p < 0.05). Combining CLP with HLS is a feasible model to study sepsis-induced myopathy in mice. Hindlimb disuse combined with sepsis induced muscle dysfunction and immune cell infiltration in a muscle dependent manner. These findings highlight the importance of rehabilitative interventions in septic hosts to prevent muscle disuse and help attenuate the myopathy.
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Affiliation(s)
- Orlando Laitano
- Department of Nutrition and Integrative PhysiologyCollege of Health and Human SciencesFlorida State UniversityTallahasseeFLUSA
| | - Jose Pindado
- Department of Nutrition and Integrative PhysiologyCollege of Health and Human SciencesFlorida State UniversityTallahasseeFLUSA
| | - Isela Valera
- Department of Nutrition and Integrative PhysiologyCollege of Health and Human SciencesFlorida State UniversityTallahasseeFLUSA
| | - Ray A. Spradlin
- Department of Applied Physiology and KinesiologyCollege of Health and Human PerformanceUniversity of FloridaGainesvilleFLUSA
| | - Kevin O. Murray
- Department of Applied Physiology and KinesiologyCollege of Health and Human PerformanceUniversity of FloridaGainesvilleFLUSA
| | - Katelyn R. Villani
- Department of Applied Physiology and KinesiologyCollege of Health and Human PerformanceUniversity of FloridaGainesvilleFLUSA
| | - Jamal M. Alzahrani
- Department of Applied Physiology and KinesiologyCollege of Health and Human PerformanceUniversity of FloridaGainesvilleFLUSA
| | - Terence E. Ryan
- Department of Applied Physiology and KinesiologyCollege of Health and Human PerformanceUniversity of FloridaGainesvilleFLUSA
| | - Philip A. Efron
- Department of SurgeryCollege of MedicineUniversity of FloridaGainesvilleFLUSA
| | - Leonardo F. Ferreira
- Department of Applied Physiology and KinesiologyCollege of Health and Human PerformanceUniversity of FloridaGainesvilleFLUSA
| | - Elisabeth R. Barton
- Department of Applied Physiology and KinesiologyCollege of Health and Human PerformanceUniversity of FloridaGainesvilleFLUSA
| | - Thomas L. Clanton
- Department of Applied Physiology and KinesiologyCollege of Health and Human PerformanceUniversity of FloridaGainesvilleFLUSA
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23
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Sfera A, Osorio C, Zapata Martín del Campo CM, Pereida S, Maurer S, Maldonado JC, Kozlakidis Z. Endothelial Senescence and Chronic Fatigue Syndrome, a COVID-19 Based Hypothesis. Front Cell Neurosci 2021; 15:673217. [PMID: 34248502 PMCID: PMC8267916 DOI: 10.3389/fncel.2021.673217] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 05/25/2021] [Indexed: 12/14/2022] Open
Abstract
Myalgic encephalomyelitis/chronic fatigue syndrome is a serious illness of unknown etiology, characterized by debilitating exhaustion, memory impairment, pain and sleep abnormalities. Viral infections are believed to initiate the pathogenesis of this syndrome although the definite proof remains elusive. With the unfolding of COVID-19 pandemic, the interest in this condition has resurfaced as excessive tiredness, a major complaint of patients infected with the SARS-CoV-2 virus, often lingers for a long time, resulting in disability, and poor life quality. In a previous article, we hypothesized that COVID-19-upregulated angiotensin II triggered premature endothelial cell senescence, disrupting the intestinal and blood brain barriers. Here, we hypothesize further that post-viral sequelae, including myalgic encephalomyelitis/chronic fatigue syndrome, are promoted by the gut microbes or toxin translocation from the gastrointestinal tract into other tissues, including the brain. This model is supported by the SARS-CoV-2 interaction with host proteins and bacterial lipopolysaccharide. Conversely, targeting microbial translocation and cellular senescence may ameliorate the symptoms of this disabling illness.
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Affiliation(s)
- Adonis Sfera
- Patton State Hospital, San Bernardino, CA, United States
| | | | | | | | - Steve Maurer
- Patton State Hospital, San Bernardino, CA, United States
| | - Jose Campo Maldonado
- Department of Internal Medicine, The University of Texas Rio Grande Valley, Edinburg, TX, United States
| | - Zisis Kozlakidis
- International Agency for Research on Cancer (IARC), Lyon, France
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24
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Laitano O, Robinson GP, Garcia CK, Mattingly AJ, Sheikh LH, Murray KO, Iwaniec JD, Alzahrani J, Morse D, Hidalgo J, Clanton TL. Skeletal Muscle Interleukin-6 Contributes to the Innate Immune Response in Septic Mice. Shock 2021; 55:676-685. [PMID: 32826815 PMCID: PMC8607997 DOI: 10.1097/shk.0000000000001641] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
ABSTRACT Interleukin-6 (IL-6) is a major cytokine released by skeletal muscle. Although IL-6 plays complex but well-known roles in host defense, the specific contribution of skeletal muscle IL-6 to innate immunity remains unknown. We tested its functional relevance by exposing inducible skeletal muscle IL-6 knockdown (skmIL-6KD) mice to a cecal slurry model of polymicrobial peritonitis and compared responses to strain-matched controls and skeletal muscle Cre-matched controls at 3, 6, and 12 h postinfection. In both sexes, skmIL-6KD mice at 6 h of infection exhibited marked changes to leukocyte trafficking in the peritoneum, characterized by ∼1.75-fold elevation in %neutrophils, a ∼3-fold reduction in %lymphocytes and a ∼2 to 3-fold reduction in %basophils. A similar pattern was seen at 12 h. No changes were observed in plasma leukocyte counts. Circulating cytokines in female skmIL-6KD mice at 6 h consistently showed modest reductions in IL-6, but marked reductions in a broad range of both pro- and anti-inflammatory cytokines, e.g., TNFα and IL-10. In both sexes at 12 h, a generalized suppression of plasma cytokines was also seen after the effects of Cre-induction with raloxifene were addressed. There were no significant effects of skmIL-6KD on mortality in either sex. Collectively, our results are consistent with skmIL-6 playing an important and previously unrecognized role in immune cell trafficking and cytokine regulation during septic shock.
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Affiliation(s)
- Orlando Laitano
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
| | - Gerard P. Robinson
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
| | - Christian K. Garcia
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
| | - Alex J. Mattingly
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
| | - Laila H. Sheikh
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
| | - Kevin O. Murray
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
| | - John D. Iwaniec
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
| | - Jamal Alzahrani
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
| | - Deborah Morse
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
| | - Juan Hidalgo
- Department of Cellular Biology, Physiology and Immunology, Animal Physiology Unit, Faculty of Biosciences, Autonomous University of Barcelona, Barcelona, Spain
| | - Thomas L. Clanton
- College of Health and Human Performance, Department of Applied Physiology and Kinesiology, Gainesville, Florida
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25
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Laitano O, Oki K, Leon LR. The Role of Skeletal Muscles in Exertional Heat Stroke Pathophysiology. Int J Sports Med 2021; 42:673-681. [PMID: 33772503 DOI: 10.1055/a-1400-9754] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The active participation of skeletal muscles is a unique characteristic of exertional heat stroke. Nevertheless, the only well-documented link between skeletal muscle activities and exertional heat stroke pathophysiology is the extensive muscle damage (e. g., rhabdomyolysis) and subsequent leakage of intramuscular content into the circulation of exertional heat stroke victims. Here, we will present and discuss rarely explored roles of skeletal muscles in the context of exertional heat stroke pathophysiology and recovery. This includes an overview of heat production that contributes to severe hyperthermia and the synthesis and secretion of bioactive molecules, such as cytokines, chemokines and acute phase proteins. These molecules can alter the overall inflammatory status from pro- to anti-inflammatory, affecting other organ systems and influencing recovery. The activation of innate immunity can determine whether a victim is ready to return to physical activity or experiences a prolonged convalescence. We also provide a brief discussion on whether heat acclimation can shift skeletal muscle secretory phenotype to prevent or aid recovery from exertional heat stroke. We conclude that skeletal muscles should be considered as a key organ system in exertional heat stroke pathophysiology.
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Affiliation(s)
- Orlando Laitano
- Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, United States
| | - Kentaro Oki
- Thermal & Mountain Medicine Devision, United States Army Research Institute of Environmental Medicine, Natick, United States
| | - Lisa R Leon
- Thermal & Mountain Medicine Devision, United States Army Research Institute of Environmental Medicine, Natick, United States
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26
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Rousseau AF, Prescott HC, Brett SJ, Weiss B, Azoulay E, Creteur J, Latronico N, Hough CL, Weber-Carstens S, Vincent JL, Preiser JC. Long-term outcomes after critical illness: recent insights. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2021; 25:108. [PMID: 33731201 PMCID: PMC7968190 DOI: 10.1186/s13054-021-03535-3] [Citation(s) in RCA: 107] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/05/2021] [Indexed: 02/08/2023]
Abstract
Intensive care survivors often experience post-intensive care sequelae, which are frequently gathered together under the term “post-intensive care syndrome” (PICS). The consequences of PICS on quality of life, health-related costs and hospital readmissions are real public health problems. In the present Viewpoint, we summarize current knowledge and gaps in our understanding of PICS and approaches to management.
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Affiliation(s)
- Anne-Françoise Rousseau
- Department of Intensive Care and Burn Center, University Hospital, University of Liège, Liège, Belgium
| | - Hallie C Prescott
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Stephen J Brett
- Department of Critical Care, Imperial College Healthcare NHS Trust, London, UK.,Department of Surgery and Cancer, Imperial College London, London, UK
| | - Björn Weiss
- Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Berlin, Germany.,Freie Universität Berlin, Humboldt-Universität Zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Elie Azoulay
- Réanimation Médicale, Hôpital St Louis, Paris, France
| | - Jacques Creteur
- Department of Intensive Care, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Nicola Latronico
- Department of Anesthesiology, Critical Care and Emergency, Spedali Civili University Hospital, Brescia, Italy.,Department of Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Catherine L Hough
- Division of Pulmonary and Critical Care Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Steffen Weber-Carstens
- Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Berlin, Germany.,Freie Universität Berlin, Humboldt-Universität Zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Jean-Charles Preiser
- Department of Intensive Care, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium. .,Erasme University Hospital, Route de Lennik 808, Brussels, Belgium.
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Urinary Titin N-Fragment as a Biomarker of Muscle Atrophy, Intensive Care Unit-Acquired Weakness, and Possible Application for Post-Intensive Care Syndrome. J Clin Med 2021; 10:jcm10040614. [PMID: 33561946 PMCID: PMC7915692 DOI: 10.3390/jcm10040614] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/29/2021] [Accepted: 02/03/2021] [Indexed: 12/15/2022] Open
Abstract
Titin is a giant protein that functions as a molecular spring in sarcomeres. Titin interconnects the contraction of actin-containing thin filaments and myosin-containing thick filaments. Titin breaks down to form urinary titin N-fragments, which are measurable in urine. Urinary titin N-fragment was originally reported to be a useful biomarker in the diagnosis of muscle dystrophy. Recently, the urinary titin N-fragment has been increasingly gaining attention as a novel biomarker of muscle atrophy and intensive care unit-acquired weakness in critically ill patients, in whom titin loss is a possible pathophysiology. Furthermore, several studies have reported that the urinary titin N-fragment also reflected muscle atrophy and weakness in patients with chronic illnesses. It may be used to predict the risk of post-intensive care syndrome or to monitor patients' condition after hospital discharge for better nutritional and rehabilitation management. We provide several tips on the use of this promising biomarker in post-intensive care syndrome.
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Pablo Tortola C, Fielitz B, Li Y, Rüdebusch J, Luft FC, Fielitz J. Activation of Tripartite Motif Containing 63 Expression by Transcription Factor EB and Transcription Factor Binding to Immunoglobulin Heavy Chain Enhancer 3 Is Regulated by Protein Kinase D and Class IIa Histone Deacetylases. Front Physiol 2021; 11:550506. [PMID: 33519497 PMCID: PMC7838639 DOI: 10.3389/fphys.2020.550506] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 12/09/2020] [Indexed: 01/07/2023] Open
Abstract
Rationale The ubiquitin–proteasome system (UPS) is responsible for skeletal muscle atrophy. We showed earlier that the transcription factor EB (TFEB) plays a role by increasing E3 ubiquitin ligase muscle really interesting new gene-finger 1(MuRF1)/tripartite motif-containing 63 (TRIM63) expression. MuRF 1 ubiquitinates structural proteins and mediates their UPS-dependent degradation. We now investigated how TFEB-mediated TRIM63 expression is regulated. Objective Because protein kinase D1 (PKD1), histone deacetylase 5 (HDAC5), and TFEB belong to respective families with close structural, regulatory, and functional properties, we hypothesized that these families comprise a network regulating TRIM63 expression. Methods and Results We found that TFEB and transcription factor for immunoglobulin heavy-chain enhancer 3 (TFE3) activate TRIM63 expression. The class IIa HDACs HDAC4, HDAC5, and HDAC7 inhibited this activity. Furthermore, we could map the HDAC5 and TFE3 physical interaction. PKD1, PKD2, and PKD3 reversed the inhibitory effect of all tested class IIa HDACs toward TFEB and TFE3. PKD1 mediated nuclear export of all HDACs and lifted TFEB and TFE3 repression. We also mapped the PKD2 and HDAC5 interaction. We found that the inhibitory effect of PKD1 and PKD2 toward HDAC4, HDAC5, and HDAC7 was mediated by their phosphorylation and 14-3-3 mediated nuclear export. Conclusion TFEB and TFE3 activate TRIM63 expression. Both transcription factors are controlled by HDAC4, HDAC5, HDAC7, and all PKD-family members. We propose that the multilevel PKD/HDAC/TFEB/TFE3 network tightly controls TRIM63 expression.
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Affiliation(s)
- Cristina Pablo Tortola
- Experimental and Clinical Research Center (ECRC), Max Delbrück Center (MDC) for Molecular Medicine in the Helmholtz Association, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Britta Fielitz
- Department of Internal Medicine B, Cardiology, University Medicine Greifswald, Greifswald, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Greifswald, Greifswald, Germany
| | - Yi Li
- Experimental and Clinical Research Center (ECRC), Max Delbrück Center (MDC) for Molecular Medicine in the Helmholtz Association, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Julia Rüdebusch
- Department of Internal Medicine B, Cardiology, University Medicine Greifswald, Greifswald, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Greifswald, Greifswald, Germany
| | - Friedrich C Luft
- Experimental and Clinical Research Center (ECRC), Max Delbrück Center (MDC) for Molecular Medicine in the Helmholtz Association, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Jens Fielitz
- Experimental and Clinical Research Center (ECRC), Max Delbrück Center (MDC) for Molecular Medicine in the Helmholtz Association, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Department of Internal Medicine B, Cardiology, University Medicine Greifswald, Greifswald, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Greifswald, Greifswald, Germany
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29
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Čaval T, Lin YH, Varkila M, Reiding KR, Bonten MJM, Cremer OL, Franc V, Heck AJR. Glycoproteoform Profiles of Individual Patients' Plasma Alpha-1-Antichymotrypsin are Unique and Extensively Remodeled Following a Septic Episode. Front Immunol 2021; 11:608466. [PMID: 33519818 PMCID: PMC7840657 DOI: 10.3389/fimmu.2020.608466] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 11/24/2020] [Indexed: 01/08/2023] Open
Abstract
Sepsis and septic shock remain the leading causes of death in intensive care units (ICUs), yet the pathogenesis originating from the inflammatory response during sepsis remains ambiguous. Acute-phase proteins are typically highly glycosylated, and the nature of the glycans have been linked to the incidence and severity of such inflammatory responses. To further build upon these findings we here monitored, the longitudinal changes in the plasma proteome and, in molecular detail, glycoproteoform profiles of alpha-1-antichymotrypsin (AACT) extracted from plasma of ten individual septic patients. For each patient we included four different time-points, including post-operative (before sepsis) and following discharge from the ICU. We isolated AACT from plasma depleted for albumin, IgG and serotransferrin and used high-resolution native mass spectrometry to qualitatively and quantitatively monitor the multifaceted glycan microheterogeneity of desialylated AACT, which allowed us to monitor how changes in the glycoproteoform profiles reflected the patient's physiological state. Although we observed a general trend in the remodeling of the AACT glycoproteoform profiles, e.g. increased fucosylation and branching/LacNAc elongation, each patient exhibited unique features and responses, providing a resilient proof-of-concept for the importance of personalized longitudinal glycoproteoform profiling. Importantly, we observed that the AACT glycoproteoform changes induced by sepsis did not readily subside after discharge from ICU.
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Affiliation(s)
- Tomislav Čaval
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Utrecht, Netherlands
- Netherlands Proteomics Center, Utrecht, Netherlands
| | - Yu-Hsien Lin
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Utrecht, Netherlands
- Netherlands Proteomics Center, Utrecht, Netherlands
| | - Meri Varkila
- Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht, Netherlands
| | - Karli R. Reiding
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Utrecht, Netherlands
- Netherlands Proteomics Center, Utrecht, Netherlands
| | - Marc J. M. Bonten
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Olaf L. Cremer
- Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht, Netherlands
| | - Vojtech Franc
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Utrecht, Netherlands
- Netherlands Proteomics Center, Utrecht, Netherlands
| | - Albert J. R. Heck
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Utrecht, Netherlands
- Netherlands Proteomics Center, Utrecht, Netherlands
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30
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Iwaniec J, Robinson GP, Garcia CK, Murray KO, de Carvalho L, Clanton TL, Laitano O. Acute phase response to exertional heat stroke in mice. Exp Physiol 2021; 106:222-232. [PMID: 32281170 PMCID: PMC8530095 DOI: 10.1113/ep088501] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 04/07/2020] [Indexed: 12/18/2022]
Abstract
NEW FINDINGS What is the central question of this study? Exertional heat stroke is accompanied by a marked inflammatory response. In this study, we explored the time course of acute phase proteins during recovery from severe heat stress in mice and the potential role of skeletal muscles as their source. What is the main finding and its importance? Exertional heat stroke transiently increased expression of acute phase proteins in mouse liver and plasma and depleted liver and plasma fibrinogen, a typical response to severe trauma. In contrast, skeletal muscle fibrinogen production was stimulated by heat stroke, which can provide an additional reservoir for fibrinogen supply to maintain the clotting potential throughout the body and locally within the muscle. ABSTRACT Exertional heat stroke (EHS), the most severe manifestation of heat illness, is accompanied by a marked inflammatory response. The release of acute phase proteins (APPs) is an important component of inflammation, which can assist in tissue survival/repair. The time course of APPs in recovery from EHS is unknown. Furthermore, skeletal muscles produce APPs during infection, but it is unknown whether they can produce APPs after EHS. Our objective was to determine the time course of representative APPs in liver, plasma and skeletal muscle during recovery from EHS. Male C57BL6/J mice ran in a forced running wheel at 37.5°C, 40% relative humidity until symptom limitation. Exercise control (EXC) mice ran for the same duration and intensity at 22.5°C. Samples were collected (n = 6-12 per group) over 14 days of recovery. Protein abundance was quantified using immunoblots. Total and phosphorylated STAT3 (pSTAT3) at Tyr705, responsible for APP activation, increased in liver at 0.5 h after EHS compared with EXC, (P < 0.05 and P < 0.001, respectively). In contrast, in tibialis anterior (TA) muscle, total STAT3 increased at 3 h (P < 0.05) but pSTAT3 (Tyr705) did not. Liver serum amyloid A1 (SAA1) increased at 3 and 24 h after EHS (P < 0.05), whereas plasma SAA1 increased only at 3 h (P < 0.05). SAA1 was not detected in TA muscle. In liver and plasma, fibrinogen decreased at 3 h (P < 0.01) and increased in TA muscle (P < 0.05). Lipocalin-2 was undetectable in liver or TA muscle. Recovery from EHS is characterized by a transient acute phase response in both liver and skeletal muscle. However, APP expression profiles and subtypes differ between skeletal muscle and liver.
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Affiliation(s)
- John Iwaniec
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Gerard P Robinson
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Christian K Garcia
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Kevin O Murray
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Lucas de Carvalho
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Thomas L Clanton
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Orlando Laitano
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
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31
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Schefold JC, Wollersheim T, Grunow JJ, Luedi MM, Z'Graggen WJ, Weber-Carstens S. Muscular weakness and muscle wasting in the critically ill. J Cachexia Sarcopenia Muscle 2020; 11:1399-1412. [PMID: 32893974 PMCID: PMC7749542 DOI: 10.1002/jcsm.12620] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/10/2020] [Accepted: 08/23/2020] [Indexed: 12/17/2022] Open
Affiliation(s)
- Joerg C Schefold
- Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Tobias Wollersheim
- Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt Universität zu Berlin and Berlin Institute of Health, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Julius J Grunow
- Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt Universität zu Berlin and Berlin Institute of Health, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Markus M Luedi
- Department of Anaesthesiology and Pain Medicine, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - Werner J Z'Graggen
- Department of Neurology and Neurosurgery, Inselspital, University Hospital Bern, University of Bern, Bern, Switzerland
| | - Steffen Weber-Carstens
- Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt Universität zu Berlin and Berlin Institute of Health, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
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32
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Marked Increased Production of Acute Phase Reactants by Skeletal Muscle during Cancer Cachexia. Cancers (Basel) 2020; 12:cancers12113221. [PMID: 33142864 PMCID: PMC7693727 DOI: 10.3390/cancers12113221] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 10/24/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Muscle wasting during cancer is recognized as an independent predictor of mortality. The aim of this study was to characterize the changes in the muscle secretome associated with cancer cachexia to gain a better understanding of the mechanisms involved and to identify secreted proteins which may reflect this wasting process. Our study demonstrated that skeletal muscle is a source of several acute phase reactants during cancer cachexia that may hold the key to a cachexia-specific signature. Future work will have to determine whether some of these acute phase reactants contribute to and/or reflect the muscle atrophy caused by cancer, therefore representing potential therapeutic targets and/or biomarkers of cancer cachexia. Abstract Loss of skeletal muscle mass in cancer cachexia is recognized as a predictor of mortality. This study aimed to characterize the changes in the muscle secretome associated with cancer cachexia to gain a better understanding of the mechanisms involved and to identify secreted proteins which may reflect this wasting process. The changes in the muscle proteome of the C26 model were investigated by label-free proteomic analysis followed by a bioinformatic analysis in order to identify potentially secreted proteins. Multiple reaction monitoring and Western blotting were used to verify the presence of candidate proteins in the circulation. Our results revealed a marked increased muscular production of several acute phase reactants (APR: Haptoglobin, Serine protease inhibitor A3N, Complement C3, Serum amyloid A-1 protein) which are released in the circulation during C26 cancer cachexia. This was confirmed in other models of cancer cachexia as well as in cancer patients. Glucocorticoids and proinflammatory cytokines are responsible for an increased production of APR by muscle cells. Finally, their muscular expressions are strongly positively correlated with body weight loss as well as the muscular induction of atrogens. Our study demonstrates therefore a marked increased production of APR by the muscle in cancer cachexia.
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Ren Y, Song X, Tan L, Guo C, Wang M, Liu H, Cao Z, Li Y, Peng C. A Review of the Pharmacological Properties of Psoralen. Front Pharmacol 2020; 11:571535. [PMID: 33013413 PMCID: PMC7500444 DOI: 10.3389/fphar.2020.571535] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 08/19/2020] [Indexed: 12/13/2022] Open
Abstract
Psoralen is the principal bioactive component in the dried fruits of Cullen corylifolium (L.) Medik (syn. Psoralea corylifolia L), termed "Buguzhi" in traditional Chinese medicine (TCM). Recent studies have demonstrated that psoralen displays multiple bioactive properties, beneficial for the treatment of osteoporosis, tumors, viruses, bacteria, and inflammation. The present review focuses on the research evidence relating to the properties of psoralen gathered over recent years. Firstly, multiple studies have demonstrated that psoralen exerts strong anti-osteoporotic effects via regulation of osteoblast/osteoclast/chondrocyte differentiation or activation due to the participation in multiple molecular mechanisms of the wnt/β-catenin, bone morphogenetic protein (BMP), inositol-requiring enzyme 1 (IRE1)/apoptosis signaling kinase 1 (ASK1)/c-jun N-terminal kinase (JNK) and the Protein Kinase B(AKT)/activator protein-1 (AP-1) axis, and the expression of miR-488, peroxisome proliferators-activated receptor-gamma (PPARγ), and matrix metalloproteinases (MMPs). In addition, the antitumor properties of psoralen are associated with the induction of ER stress-related cell death via enhancement of PERK: Pancreatic Endoplasmic Reticulum Kinase (PERK)/activating transcription factor (ATF), 78kD glucose-regulated protein (GRP78)/C/EBP homologous protein (CHOP), and 94kD glucose-regulated protein (GRP94)/CHOP signaling, and inhibition of P-glycoprotein (P-gp) or ATPase that overcomes multidrug resistance. Furthermore, multiple articles have shown that the antibacterial, anti-inflammatory and neuroprotective effects of psoralen are a result of its interaction with viral polymerase (Pol), destroying the formation of biofilm, and regulating the activation of tumor necrosis factor alpha (TNF-α), transforming growth factor beta (TGF-β), interleukin 4/5/6/8/12/13 (IL-4/5/6/8/12/13), GATA-3, acetylcholinesterase (AChE), and the hypothalamic-pituitary-adrenal (HPA) axis. Finally, the toxic effects and mechanisms of action of psoralen have also been reviewed.
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Affiliation(s)
- Yali Ren
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, China
| | - Xiaominting Song
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, China
| | - Lu Tan
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, China
| | - Chuanjie Guo
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, China
| | - Miao Wang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, China
| | - Hui Liu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, China, Pharmaceutical University, Nanjing, China
| | - Zhixing Cao
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, China
| | - Yuzhi Li
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, China
| | - Cheng Peng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, National Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu, China
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Pardo E. [Nutritional support for critically ill patients suffering from SARS-CoV-2 infection]. LE PRATICIEN EN ANESTHESIE REANIMATION 2020; 24:218-224. [PMID: 32837212 PMCID: PMC7351417 DOI: 10.1016/j.pratan.2020.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Patients with severe cases of COVID-19 are at high nutritional risk during their ICU stay. Prolonged immobilization associated with an exacerbated systemic inflammatory response is a major provider of ICU-acquired muscle weakness. Early enteral nutrition is recommended to gradually reach the energy target of 25 kcal/kg/day and protein target of 1.3 g/kg/day around D4. The occurrence of a Refeeding syndrome should be closely monitored. In case of feeding intolerance refractory to a prokinetic treatment, complementary or total parenteral nutrition is advised, favouring new generation mixed lipid emulsions (containing fish oil) and regular monitoring of triglyceridemia. Nutrition care of critically ill patients should be carried out with limited procedures that may pose a risk of contamination for the healthcare staff.
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Affiliation(s)
- Emmanuel Pardo
- Service d'anesthésie-réanimation, hôpital Saint-Antoine, AP-HP, Paris, France
- Sorbonne universités, UPMC Université Paris 06, Paris, France
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35
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McClafferty B, Umer I, Fye G, Kepko D, Kalayanamitra R, Shahid Z, Ramgobin D, Cai A, Groff A, Bhandari A, Aggarwal CS, Patel R, Bhatt D, Polimera H, Sahu N, Vunnam R, Golamari R, Kumar A, Jain R. Approach to critical illness myopathy and polyneuropathy in the older SARS-CoV-2 patients. J Clin Neurosci 2020; 79:241-245. [PMID: 33070904 PMCID: PMC7380205 DOI: 10.1016/j.jocn.2020.07.058] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/08/2020] [Accepted: 07/21/2020] [Indexed: 12/14/2022]
Abstract
One of the major concerns of the health care community and the public surrounding the SARS-CoV-2 pandemic is the availability and use of ventilators. Unprecedented surges of patients presented to intensive care units across the country, with older adults making up a large proportion of the patient population. This paper illustrates contemporary approaches to critical illness myopathy (CIM), critical illness polyneuropathy (CIP), and critical illness polyneuromyopathy (CIPNM) in older patients, including incidence, risk factors, mechanisms for pathology, diagnosis, contemporary treatment approaches, and outcomes. We hope that the following analysis may help educate clinicians and ultimately decrease the duration of the mechanical ventilation required by these patients, resulting in improved clinical outcomes and an increase in ventilator availability for other patients in need.
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Affiliation(s)
| | - Ibrahim Umer
- Lake Erie College of Osteopathic Medicine, United States
| | - Gary Fye
- Lake Erie College of Osteopathic Medicine, United States
| | - Douglas Kepko
- Lake Erie College of Osteopathic Medicine, United States
| | | | - Zainab Shahid
- Lake Erie College of Osteopathic Medicine, United States
| | | | - Alice Cai
- Penn State College of Medicine, United States
| | | | - Abani Bhandari
- Department of Internal Medicine, KISTMC, Tribhuvan University, Nepal, India
| | | | - Ravi Patel
- Department of Internal Medicine, Penn State Milton S. Hershey Medical Center, United States
| | - Dhirisha Bhatt
- Department of Internal Medicine, Penn State Milton S. Hershey Medical Center, United States
| | - Hyma Polimera
- Department of Internal Medicine, Penn State Milton S. Hershey Medical Center, United States
| | - Nitasa Sahu
- Department of Internal Medicine, Penn State Milton S. Hershey Medical Center, United States
| | - Ramarao Vunnam
- Department of Internal Medicine, Penn State Milton S. Hershey Medical Center, United States
| | - Reshma Golamari
- Department of Internal Medicine, Penn State Milton S. Hershey Medical Center, United States
| | - Ashutosh Kumar
- Department of Pediatrics and Neurology, Penn State Milton S. Hershey Medical Center, United States
| | - Rohit Jain
- Department of Internal Medicine, Penn State Milton S. Hershey Medical Center, United States
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36
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Hydrocortisone mitigates ICU-AW by fine-tuning of muscle atrophic and hypertrophic signaling pathways in a sepsis model with limb immobilization. Life Sci 2020; 261:118366. [PMID: 32871182 DOI: 10.1016/j.lfs.2020.118366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/14/2020] [Accepted: 08/27/2020] [Indexed: 12/29/2022]
Abstract
AIMS Intensive care unit-acquired weakness (ICU-AW) is a complex spectrum of disability that delays recovery of critically ill-immobilized patients with sepsis. Much discrepancy remain on the use of corticosteroids and their impact on muscle regeneration in critical illness management. Therefore, the aim of this study is to investigate whether hydrocortisone (HCT) modulates muscle mass turnover in ICU-AW induced by sepsis with limb immobilization (SI). MAIN METHODS Sepsis by cecal ligation puncture (CLP) with forelimb-immobilization were performed in rats. The study consisted of four groups: Sham (left forelimb-immobilization), Sham HCT (left forelimb-immobilization + HCT), SI (CLP + left forelimb-immobilization) and SI HCT (CLP + left forelimb-immobilization + HCT). Motor force, blood and muscle sampling were assessed. KEY FINDINGS HCT prevented body weight loss associated with SI and attenuated systemic and muscular inflammation. Besides, myosin was restituted in SI HCT group in conjunction to muscle mass and strength restoration. Pro-hypertrophic calcineurin (PP2B-Aβ) and nuclear factor of activated T-cells C3 (NFATc3) but not protein kinase B (Akt) were re-activated by HCT. Finally, pro-atrophic extracellular signal-regulated kinases (ERK1/2) and p38 mitogen-activated protein kinases (p38) but not nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB) were inhibited in SI HCT group. SIGNIFICANCE This study unravels new molecular events thought to control muscle protein synthesis in ICU-AW induced by sepsis and limb immobilization. HCT has a potential to fine-tune muscle-signaling pathways and to reduce the negative outcomes of ICU-AW.
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De Paepe B. Progressive Skeletal Muscle Atrophy in Muscular Dystrophies: A Role for Toll-like Receptor-Signaling in Disease Pathogenesis. Int J Mol Sci 2020; 21:ijms21124440. [PMID: 32580419 PMCID: PMC7352931 DOI: 10.3390/ijms21124440] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/18/2020] [Accepted: 06/18/2020] [Indexed: 12/16/2022] Open
Abstract
Muscle atrophy is an active process controlled by specific transcriptional programs, in which muscle mass is lost by increased protein degradation and/or decreased protein synthesis. This review explores the involvement of Toll-like receptors (TLRs) in the muscle atrophy as it is observed in muscular dystrophies, disorders characterized by successive bouts of muscle fiber degeneration and regeneration in an attempt to repair contraction-induced damage. TLRs are defense receptors that detect infection and recognize self-molecules released from damaged cells. In muscular dystrophies, these receptors become over-active, and are firmly involved in the sustained chronic inflammation exhibited by the muscle tissue, via their induction of pro-inflammatory cytokine expression. Taming the exaggerated activation of TLR2/4 and TLR7/8/9, and their downstream effectors in particular, comes forward as a therapeutic strategy with potential to slow down disease progression.
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Lachmann G, Mörgeli R, Kuenz S, Piper SK, Spies C, Kurpanik M, Weber-Carstens S, Wollersheim T. Perioperatively Acquired Weakness. Anesth Analg 2020; 130:341-351. [PMID: 30855340 DOI: 10.1213/ane.0000000000004068] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Skeletal muscle failure in critical illness (intensive care unit-acquired weakness) is a well-known complication developing early during intensive care unit stay. However, muscle weakness during the perioperative setting has not yet been investigated. METHODS We performed a subgroup investigation of a prospective observational trial to investigate perioperative muscle weakness. Eighty-nine patients aged 65 years or older were assessed for handgrip strength preoperatively, on the first postoperative day, at intensive care unit discharge, at hospital discharge, and at 3-month follow-up. Functional status was evaluated perioperatively via Barthel index, instrumental activities of daily living, Timed Up and Go test, and functional independence measure. After exclusion of patients with intensive care unit-acquired weakness or intensive care unit stay of ≥72 hours, 59 patients were included into our analyses. Of these, 14 patients had additional pulmonary function tests preoperatively and on postoperative day 1. Blood glucose was measured intraoperatively every 20 minutes. RESULTS Handgrip strength significantly decreased after surgery on postoperative day 1 by 16.4% (P < .001). Postoperative pulmonary function significantly decreased by 13.1% for vital capacity (P = .022) and 12.6% for forced expiratory volume in 1 second (P = .001) on postoperative day 1. Handgrip strength remained significantly reduced at hospital discharge (P = .016) and at the 3-month follow-up (P = .012). Perioperative glucose levels showed no statistically significant impact on muscle weakness. Instrumental activities of daily living (P < .001) and functional independence measure (P < .001) were decreased at hospital discharge, while instrumental activities of daily living remained decreased at the 3-month follow-up (P = .026) compared to preoperative assessments. CONCLUSIONS Perioperatively acquired weakness occurred, indicated by a postoperatively decreased handgrip strength, decreased respiratory muscle function, and impaired functional status, which partly remained up to 3 months.
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Affiliation(s)
- Gunnar Lachmann
- From the Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Rudolf Mörgeli
- From the Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sophia Kuenz
- From the Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sophie K Piper
- Berlin Institute of Health (BIH), Berlin, Germany.,Institute of Biometry and Clinical Epidemiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Claudia Spies
- From the Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Maryam Kurpanik
- From the Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Steffen Weber-Carstens
- From the Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Tobias Wollersheim
- From the Department of Anesthesiology and Operative Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
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Yang F, Sun M, Sun C, Li J, Yang X, Bi C, Wang M, Pu L, Wang J, Wang C, Xie M, Yao Y, Jin L. Associations of C-reactive Protein with 25-hydroxyvitamin D in 24 Specific Diseases: A Cross-sectional Study from NHANES. Sci Rep 2020; 10:5883. [PMID: 32246038 PMCID: PMC7125216 DOI: 10.1038/s41598-020-62754-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 03/16/2020] [Indexed: 11/22/2022] Open
Abstract
Most diseases might be associated with acute or chronic inflammation, and the role of vitamin D in diseases has been extensively explored in recent years. Thus, we examined the associations of one of the best markers for inflammation ― C-reactive protein (CRP) with 25-hydroxyvitamin D [25(OH)D] in 24 specific diseases. We performed cross-sectional analyses among 9,809 subjects aged ≥18 years who participated in the U.S. National Health and Nutrition Examination Survey (NHANES) in 2007~2010. The generalized additive model (GAM) was used to explore the associations of CRP with 25(OH)D in different diseases, adjusted for the age, gender, examination period and race. Distributions of CRP were significantly different (P < 0.05) in gender, examination period and race, and distributions of 25(OH)D were different (P < 0.05) in the examination period and race. Generally, CRP was negatively associated with 25(OH)D for majority diseases. 25(OH)D was negatively associated with CRP generally, and the associations were disease-specific and disease category-specific. In respiratory, gastrointestinal and mental diseases, the associations tended to be approximately linear. While in metabolic diseases, the associations were nonlinear, and the slope of the nonlinear curve decreased with 25(OH)D, especially when 25(OH)D < 30 μg/L.
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Affiliation(s)
- Fang Yang
- Department of Health Management Center, the First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Mengzi Sun
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Chong Sun
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Jiagen Li
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Xiuning Yang
- Department of Hepatobiliary Surgery, Affiliated hospital of Beihua University, Jilin, Jilin, 132011, China
| | - Chunli Bi
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Min Wang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Liyuan Pu
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, School of Public Health, Jilin University, Changchun, Jilin, 130021, China
| | - Jianmeng Wang
- Department of Geriatrics, the First Hospital of Jilin University, Changchun, Jilin, 130021, China
| | - Chunxiao Wang
- Department of Clinical Medicine, School of Clinical Medicine, Changchun, Jilin, 130021, China
| | - Meizhen Xie
- Department of Clinical Medicine, School of Clinical Medicine, Changchun, Jilin, 130021, China
| | - Yan Yao
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, School of Public Health, Jilin University, Changchun, Jilin, 130021, China.
| | - Lina Jin
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, School of Public Health, Jilin University, Changchun, Jilin, 130021, China.
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Kim J, Aydemir TB, Jimenez-Rondan FR, Ruggiero CH, Kim MH, Cousins RJ. Deletion of metal transporter Zip14 (Slc39a14) produces skeletal muscle wasting, endotoxemia, Mef2c activation and induction of miR-675 and Hspb7. Sci Rep 2020; 10:4050. [PMID: 32132660 PMCID: PMC7055249 DOI: 10.1038/s41598-020-61059-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 02/18/2020] [Indexed: 02/07/2023] Open
Abstract
Skeletal muscle represents the largest pool of body zinc, however, little is known about muscle zinc homeostasis or muscle-specific zinc functions. Zip14 (Slc39a14) was the most highly expressed zinc transporter in skeletal muscle of mice in response to LPS-induced inflammation. We compared metabolic parameters of skeletal muscle from global Zip14 knockout (KO) and wild-type mice (WT). At basal steady state Zip14 KO mice exhibited a phenotype that included muscle wasting and metabolic endotoxemia. Microarray and qPCR analysis of gastrocnemius muscle RNA revealed that ablation of Zip14 produced increased muscle p-Mef2c, Hspb7 and miR-675-5p expression and increased p38 activation. ChIP assays showed enhanced binding of NF-[Formula: see text] to the Mef2c promoter. In contrast, LPS-induced systemic inflammation enhanced Zip14-dependent zinc uptake by muscle, increased expression of Atrogin1 and MuRF1 and markedly reduced MyoD. These signatures of muscle atrophy and cachexia were not influenced by Zip14 ablation, however. LPS-induced miR-675-3p and -5p expression was Zip14-dependent. Collectively, these results with an integrative model are consistent with a Zip14 function in skeletal muscle at steady state that supports myogenesis through suppression of metabolic endotoxemia and that Zip14 ablation coincides with sustained activity of phosphorylated components of signaling pathways including p-Mef2c, which causes Hspb7-dependent muscle wasting.
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Affiliation(s)
- Jinhee Kim
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
- Rutgers Medical School, Newark, NJ, USA
| | - Tolunay Beker Aydemir
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
- Cornell University, Ithaca, NY, USA
| | - Felix R Jimenez-Rondan
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
| | - Courtney H Ruggiero
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
| | - Min-Hyun Kim
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA
- University of Michigan, Ann Arbor, MI, USA
| | - Robert J Cousins
- Food Science and Human Nutrition Department, Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, 32611, USA.
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Hahn A, Kny M, Pablo-Tortola C, Todiras M, Willenbrock M, Schmidt S, Schmoeckel K, Jorde I, Nowak M, Jarosch E, Sommer T, Bröker BM, Felix SB, Scheidereit C, Weber-Carstens S, Butter C, Luft FC, Fielitz J. Serum amyloid A1 mediates myotube atrophy via Toll-like receptors. J Cachexia Sarcopenia Muscle 2020; 11:103-119. [PMID: 31441598 PMCID: PMC7015249 DOI: 10.1002/jcsm.12491] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 06/28/2019] [Accepted: 07/22/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Critically ill patients frequently develop muscle atrophy and weakness in the intensive-care-unit setting [intensive care unit-acquired weakness (ICUAW)]. Sepsis, systemic inflammation, and acute-phase response are major risk factors. We reported earlier that the acute-phase protein serum amyloid A1 (SAA1) is increased and accumulates in muscle of ICUAW patients, but its relevance was unknown. Our objectives were to identify SAA1 receptors and their downstream signalling pathways in myocytes and skeletal muscle and to investigate the role of SAA1 in inflammation-induced muscle atrophy. METHODS We performed cell-based in vitro and animal in vivo experiments. The atrophic effect of SAA1 on differentiated C2C12 myotubes was investigated by analysing gene expression, protein content, and the atrophy phenotype. We used the cecal ligation and puncture model to induce polymicrobial sepsis in wild type mice, which were treated with the IкB kinase inhibitor Bristol-Myers Squibb (BMS)-345541 or vehicle. Morphological and molecular analyses were used to investigate the phenotype of inflammation-induced muscle atrophy and the effects of BMS-345541 treatment. RESULTS The SAA1 receptors Tlr2, Tlr4, Cd36, P2rx7, Vimp, and Scarb1 were all expressed in myocytes and skeletal muscle. Treatment of differentiated C2C12 myotubes with recombinant SAA1 caused myotube atrophy and increased interleukin 6 (Il6) gene expression. These effects were mediated by Toll-like receptors (TLR) 2 and 4. SAA1 increased the phosphorylation and activity of the transcription factor nuclear factor 'kappa-light-chain-enhancer' of activated B-cells (NF-κB) p65 via TLR2 and TLR4 leading to an increased binding of NF-κB to NF-κB response elements in the promoter region of its target genes resulting in an increased expression of NF-κB target genes. In polymicrobial sepsis, skeletal muscle mass, tissue morphology, gene expression, and protein content were associated with the atrophy response. Inhibition of NF-κB signalling by BMS-345541 increased survival (28.6% vs. 91.7%, P < 0.01). BMS-345541 diminished inflammation-induced atrophy as shown by a reduced weight loss of the gastrocnemius/plantaris (vehicle: -21.2% and BMS-345541: -10.4%; P < 0.05), tibialis anterior (vehicle: -22.7% and BMS-345541: -17.1%; P < 0.05) and soleus (vehicle: -21.1% and BMS-345541: -11.3%; P < 0.05) in septic mice. Analysis of the fiber type specific myocyte cross-sectional area showed that BMS-345541 reduced inflammation-induced atrophy of slow/type I and fast/type II myofibers compared with vehicle-treated septic mice. BMS-345541 reversed the inflammation-induced atrophy program as indicated by a reduced expression of the atrogenes Trim63/MuRF1, Fbxo32/Atrogin1, and Fbxo30/MuSA1. CONCLUSIONS SAA1 activates the TLR2/TLR4//NF-κB p65 signalling pathway to cause myocyte atrophy. Systemic inhibition of the NF-κB pathway reduced muscle atrophy and increased survival of septic mice. The SAA1/TLR2/TLR4//NF-κB p65 atrophy pathway could have utility in combatting ICUAW.
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Affiliation(s)
- Alexander Hahn
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Melanie Kny
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Cristina Pablo-Tortola
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Mihail Todiras
- Cardiovascular hormones, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,Nicolae Testemiţanu State University of Medicine and Pharmacy, Chișinău, Moldova
| | - Michael Willenbrock
- Signal Transduction in Tumor Cells, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Sibylle Schmidt
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Katrin Schmoeckel
- Department of Immunology, Institute of Immunology and Transfusion Medicine, University Medicine, Greifswald, Germany
| | - Ilka Jorde
- Department of Immunology, Institute of Immunology and Transfusion Medicine, University Medicine, Greifswald, Germany
| | - Marcel Nowak
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,Intracellular Proteolysis, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Ernst Jarosch
- Intracellular Proteolysis, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Thomas Sommer
- Intracellular Proteolysis, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,Institute of Biology, Humboldt-University Berlin, Berlin, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Barbara M Bröker
- Department of Immunology, Institute of Immunology and Transfusion Medicine, University Medicine, Greifswald, Germany
| | - Stephan B Felix
- Department of Internal Medicine B, Cardiology, University Medicine Greifswald, Greifswald, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Greifswald, Greifswald, Germany
| | - Claus Scheidereit
- Signal Transduction in Tumor Cells, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Steffen Weber-Carstens
- Department of Anesthesiology and Intensive Care Medicine, Campus Virchow-Klinikum and Campus Charité Mitte, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
| | - Christian Butter
- Department of Cardiology, Heart Center Brandenburg and Medical University Brandenburg (MHB), Bernau, Germany
| | - Friedrich C Luft
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Jens Fielitz
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,Department of Internal Medicine B, Cardiology, University Medicine Greifswald, Greifswald, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Greifswald, Greifswald, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
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Gubari MIM, Norouzy A, Hosseini M, Mohialdeen FA, Hosseinzadeh-Attar MJ. The Relationship between Serum Concentrations of Pro- and Anti-Inflammatory Cytokines and Nutritional Status in Patients with Traumatic Head Injury in the Intensive Care Unit. MEDICINA (KAUNAS, LITHUANIA) 2019; 55:E486. [PMID: 31443251 PMCID: PMC6723863 DOI: 10.3390/medicina55080486] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 08/12/2019] [Accepted: 08/12/2019] [Indexed: 01/04/2023]
Abstract
Background and objective: The aim of the present study was to examine the relationship between serum levels of pro-inflammatory cytokines (IL-6, IL-1β, and TNF-α) and anti-inflammatory cytokines (IL-10) measured once at the baseline with changes in nutritional status of patients with traumatic head injury (THI) assessed at three consecutive times (24 h after admission, day 6 and day 13) during hospital stay in the intensive care unit (ICU). Materials and Methods: Sixty-four patients with THI were recruited for the current study (over 10 months). The nutritional status of the patients was determined within 24 h after admission and on days 6 and 13, using actual body weight, body composition analysis, and anthropometric measurements. The APACHE II score and SOFA score were also assessed within 24 h of admission and on days 6 and 13 of patients staying in the ICU. Circulatory serum levels of cytokines (IL-6, IL-1β, TNF-α, and IL-10) were assessed once within 24 h of admission. Results: The current study found a significant reduction in BMI, FBM, LBM, MAUAC, and APM, of THI patients with high serum levels the cytokines, over the course of time from the baseline to day 7 and to day 13 in patients staying in the ICU (p < 0.001). It was also found that patients with low levels of some studied cytokines had significant improvement in their nutritional status and clinical outcomes in term of MAUAC, APM, APACHE II score and SOFA score (p < 0.001 to p < 0.01). Conclusion: THI patients who had high serum levels of studied cytokines were more prone to develop a reduction of nutritional status in terms of BMI, FBM, LBM MAUAC and APM over the course of time from patient admission until day 13 of ICU admission.
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Affiliation(s)
- Mohammed I M Gubari
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetic, Tehran University of Medical Sciences, Tehran 1416643931, Iran
| | - Abdolreza Norouzy
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetic, Tehran University of Medical Sciences, Tehran 1416643931, Iran
| | - Mostafa Hosseini
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran 1417613151, Iran
| | - Fadhil A Mohialdeen
- Community Health Department, Technical College of health, Sulaimani Polytechnic University, Sulaimani 46001, Iraq
| | - Mohammad Javad Hosseinzadeh-Attar
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetic, Tehran University of Medical Sciences, Tehran 1416643931, Iran.
- Centre of Research Excellence in Translating, Nutritional Science to Good Health, The University of Adelaide, Adelaide, SA 5005, Australia.
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Llano-Diez M, Fury W, Okamoto H, Bai Y, Gromada J, Larsson L. RNA-sequencing reveals altered skeletal muscle contraction, E3 ligases, autophagy, apoptosis, and chaperone expression in patients with critical illness myopathy. Skelet Muscle 2019; 9:9. [PMID: 30992050 PMCID: PMC6466682 DOI: 10.1186/s13395-019-0194-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 03/31/2019] [Indexed: 12/17/2022] Open
Abstract
Background Critical illness myopathy (CIM) is associated with severe skeletal muscle wasting and impaired function in intensive care unit (ICU) patients. The mechanisms underlying CIM remain incompletely understood. To elucidate the biological activities occurring at the transcriptional level in the skeletal muscle of ICU patients with CIM, the gene expression profiles, potential upstream regulators, and enrichment pathways were characterized using RNA sequencing (RNA-seq). We also compared the skeletal muscle gene signatures in ICU patients with CIM and genes perturbed by mechanical loading in one leg of the ICU patients, with an aim of reducing the loss of muscle function. Methods RNA-seq was used to assess gene expression changes in tibialis anterior skeletal muscle samples from seven critically ill, immobilized, and mechanically ventilated ICU patients with CIM and matched control subjects. We also examined skeletal muscle gene expression for both legs of six ICU patients with CIM, where one leg was mechanically loaded for 10 h/day for an average of 9 days. Results In total, 6257 of 17,221 detected genes were differentially expressed (84% upregulated; p < 0.05 and fold change ≥ 1.5) in skeletal muscle from ICU patients with CIM when compared to control subjects. The differentially expressed genes were highly associated with gene changes identified in patients with myopathy, sepsis, long-term inactivity, polymyositis, tumor, and repeat exercise resistance. Upstream regulator analysis revealed that the CIM signature could be a result of the activation of MYOD1, p38 MAPK, or treatment with dexamethasone. Passive mechanical loading only reversed expression of 0.74% of the affected genes (46 of 6257 genes). Conclusions RNA-seq analysis revealed that the marked muscle atrophy and weakness observed in ICU patients with CIM were associated with the altered expression of genes involved in muscle contraction, newly identified E3 ligases, autophagy and calpain systems, apoptosis, and chaperone expression. In addition, MYOD1, p38 MAPK, and dexamethasone were identified as potential upstream regulators of skeletal muscle gene expression in ICU patients with CIM. Mechanical loading only marginally affected the skeletal muscle transcriptome profiling of ICU patients diagnosed with CIM. Electronic supplementary material The online version of this article (10.1186/s13395-019-0194-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Monica Llano-Diez
- Department of Physiology and Pharmacology, Karolinska Institutet, Bioclinicum, J8:30, SE-171 77, Stockholm, Sweden
| | - Wen Fury
- Regeneron Pharmaceuticals, Inc., Tarrytown, NY, 10591, USA
| | - Haruka Okamoto
- Regeneron Pharmaceuticals, Inc., Tarrytown, NY, 10591, USA
| | - Yu Bai
- Regeneron Pharmaceuticals, Inc., Tarrytown, NY, 10591, USA
| | - Jesper Gromada
- Regeneron Pharmaceuticals, Inc., Tarrytown, NY, 10591, USA
| | - Lars Larsson
- Department of Physiology and Pharmacology, Karolinska Institutet, Bioclinicum, J8:30, SE-171 77, Stockholm, Sweden. .,Department of Clinical Neuroscience, Karolinska Institutet and Karolinska Hospital, Stockholm, Sweden.
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Muscular Ultrasound, Syndecan-1 and Procalcitonin Serum Levels to Assess Intensive Care Unit-Acquired Weakness. Can J Neurol Sci 2019; 46:234-242. [PMID: 30739614 DOI: 10.1017/cjn.2018.390] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Intensive care unit-acquired weakness (ICU-AW) is associated with poorer outcome of critically ill patients. Microcirculatory changes and altered vascular permeability of skeletal muscles might contribute to the pathogenesis of ICU-AW. Muscular ultrasound (MUS) displays increased muscle echogenicity, although its pathogenesis is uncertain. OBJECTIVE We investigated the combined measurement of serum and ultrasound markers to assess ICU-AW and clinical patient outcome. METHODS Fifteen patients and five healthy controls were longitudinally assessed for signs of ICU-AW at study days 3 and 10 using a muscle strength sum score. The definition of ICU-AW was based on decreased muscle strength assessed by the muscular research council-sum score. Ultrasound echogenicity of extremity muscles was assessed using a standardized protocol. Serum markers of inflammation and endothelial damage were measured. The 3-month outcome was assessed on the modified Rankin scale. RESULTS ICU-AW was present in eight patients, and seven patients and the control subjects did not develop ICU-AW. The global muscle echogenicity score (GME) differed significantly between controls and patients (mean GME, 1.1 ± 0.06 vs. 2.3 ± 0.41; p = 0.001). Mean GME values significantly decreased in patients without ICU-AW from assessment 1 (2.30 ± 0.48) to assessment 2 (2.06 ± 0.45; p = 0.027), which was not observed in patients with ICU-AW. Serum levels of syndecan-1 at day 3 significantly correlated with higher GME values at day 10 (r = 0.63, p = 0.012). Furthermore, the patients' GME significantly correlated with mRS at day 100 (r = 0.67, p = 0.013). CONCLUSION The combined use of muscular ultrasound and inflammatory biomarkers might be helpful to diagnose ICU-AW and to predict long-term outcome in critical illness.
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Schaller SJ, Nagashima M, Schönfelder M, Sasakawa T, Schulz F, Khan MAS, Kem WR, Schneider G, Schlegel J, Lewald H, Blobner M, Jeevendra Martyn JA. GTS-21 attenuates loss of body mass, muscle mass, and function in rats having systemic inflammation with and without disuse atrophy. Pflugers Arch 2018; 470:1647-1657. [PMID: 30006848 DOI: 10.1007/s00424-018-2180-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/19/2018] [Accepted: 07/05/2018] [Indexed: 12/19/2022]
Abstract
Muscle changes of critical illness are attributed to systemic inflammatory responses and disuse atrophy. GTS-21 (3-(2,4-dimethoxy-benzylidene)anabaseine), also known as DMBX-A) is a synthetic derivative of the natural product anabaseine that acts as an agonist at α7-acetylcholine receptors (α7nAChRs). Hypothesis tested was that modulation of inflammation by agonist GTS-21 (10 mg/kg b.i.d. intraperitoneally) will attenuate body weight (BW) and muscle changes. Systemic sham inflammation was produced in 125 rats by Cornyebacterium parvum (C.p.) or saline injection on days 0/4/8. Seventy-four rats had one immobilized-limb producing disuse atrophy. GTS-21 effects on BW, tibialis muscle mass (TMM), and function were assessed on day 12. Systemically, methemoglobin levels increased 26-fold with C.p. (p < 0.001) and decreased significantly (p < 0.033) with GTS-21. Control BW increased (+ 30 ± 9 g, mean ± SD) at day 12, but decreased with C.p. and superimposed disuse (p = 0.005). GTS-21 attenuated BW loss in C.p. (p = 0.005). Compared to controls, TMM decreased with C.p. (0.43 ± 0.06 g to 0.26 ± 0.03 g) and with superimposed disuse (0.18 ± 0.04 g); GTS-21 ameliorated TMM loss to 0.32 ± 0.04 (no disuse, p = 0.028) and to 0.22 ± 0.03 (with disuse, p = 0.004). Tetanic tensions decreased with C.p. or disuse and GTS-21 attenuated tension decrease in animals with disuse (p = 0.006) and in animals with C.p. and disuse (p = 0.029). C.p.-induced 11-fold increased muscle α7nAChR expression was decreased by > 60% with GTS-21 treatment. In conclusion, GTS-21 modulates systemic inflammation, evidenced by both decreased methemoglobin levels and decrease of α7nAChR expression, and mitigates inflammation-mediated loss of BW, TMM, fiber size, and function.
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Affiliation(s)
- Stefan J Schaller
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Shriners Hospitals for Children®-Boston, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA.
- Klinik für Anaesthesiologie, Klinikum rechts der Isar, Technische Universität München, Ismaningertr. 22, 81675, Munich, Germany.
| | - Michio Nagashima
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Shriners Hospitals for Children®-Boston, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
- Department of Intensive Care Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Martin Schönfelder
- Institute of Exercise Biology, Technische Universität München, Georg-Brauchle-Ring 60/62, 80992, Munich, Germany
| | - Tomoki Sasakawa
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Shriners Hospitals for Children®-Boston, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
- Department of Anesthesiology and Critical Care Medicine, Asahikawa Medical University, 1 Chome-1-1 Midorigaoka Higashi 2 Jō, Asahikawa-shi, Hokkaidō, 078-8802, Japan
| | - Fabian Schulz
- Klinik für Anaesthesiologie, Klinikum rechts der Isar, Technische Universität München, Ismaningertr. 22, 81675, Munich, Germany
| | - Mohammed A S Khan
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Shriners Hospitals for Children®-Boston, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
| | - William R Kem
- Department of Pharmacology and Therapeutics, University of Florida College of Medicine, P.O. Box 100267, Gainesville, FL, 32610-0267, USA
| | - Gerhard Schneider
- Klinik für Anaesthesiologie, Klinikum rechts der Isar, Technische Universität München, Ismaningertr. 22, 81675, Munich, Germany
| | - Jürgen Schlegel
- Institute of Pathology, Technische Universität München, Ismaningerstr. 22, 81675, Munich, Germany
| | - Heidrun Lewald
- Klinik für Anaesthesiologie, Klinikum rechts der Isar, Technische Universität München, Ismaningertr. 22, 81675, Munich, Germany
| | - Manfred Blobner
- Klinik für Anaesthesiologie, Klinikum rechts der Isar, Technische Universität München, Ismaningertr. 22, 81675, Munich, Germany
| | - J A Jeevendra Martyn
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Shriners Hospitals for Children®-Boston, Harvard Medical School, 55 Fruit St, Boston, MA, 02114, USA
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Yorulmaz H, Ozkok E, Ates G, Aksu A, Balkıs N, Tamer S. Ghrelin: Impact on Muscle Energy Metabolism in Sepsis. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-017-9610-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bouglé A, Rocheteau P, Hivelin M, Haroche A, Briand D, Tremolada C, Mantz J, Chrétien F. Micro-fragmented fat injection reduces sepsis-induced acute inflammatory response in a mouse model. Br J Anaesth 2018; 121:1249-1259. [PMID: 30442252 DOI: 10.1016/j.bja.2018.03.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 03/05/2018] [Accepted: 03/06/2018] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Severe sepsis has a high mortality rate. There is increasing evidence that human mesenchymal stem cells possess immunomodulatory properties in sepsis, particularly those from adipose tissue. We hypothesised that micro-fragmented human fat, obtained with minimal alteration of the stromal vascular niche, attenuates the inflammatory response and improves outcome in a murine model of sepsis. METHODS Micro-fragmented fat, lipoaspirate, or saline was administered intraperitoneally 2 h after caecal ligation and puncture (CLP) in C57Bl/6RJ ketamine-xylazine anaesthetised mice. The primary endpoint was the inflammatory score. Secondary endpoints included survival, physiological, histological, and biological parameters. RESULTS In CLP mice, micro-fragmented fat administration significantly decreased the median (range) inflammatory score compared with saline [17 (14-20) vs 9 (8-12), P=0.006]. Secondary endpoints were also significantly improved in micro-fragmented fat-treated compared with saline-treated CLP mice. Improvement in inflammatory score and in survival was suppressed when micro-fragmented fat was co-administered with liposomes loaded with clodronate (macrophage toxin) or NS-398 (cyclo-oxygenase 2 inhibitor), but not with SC-560 (cyclo-oxygenase 1 inhibitor). CONCLUSIONS In a murine model of severe sepsis, micro-fragmented fat improved early inflammatory status and outcome, at least in part, by a cyclo-oxygenase-2-mediated mechanism. The potential therapeutic value of micro-fragmented fat in severe sepsis warrants further investigation.
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Affiliation(s)
- A Bouglé
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, Paris, France; Sorbonne Université, Assistance Publique-Hôpitaux de Paris (AP-HP), Department of Anesthesiology and Critical Care Medicine, Institute of Cardiology, Pitié-Salpêtrière Hospital, Paris, France
| | - P Rocheteau
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, Paris, France; Centre Hospitalier Sainte-Anne, Service Hospitalo Universitaire, Paris, France
| | - M Hivelin
- Department of Plastic Surgery, Hôpital Européen Georges Pompidou, Assistance Publique-Hôpitaux de Paris (APHP), PRES Sorbonne Paris Cité, Université Paris Descartes, Paris, France
| | - A Haroche
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, Paris, France
| | - D Briand
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, Paris, France
| | | | - J Mantz
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, Paris, France; Department of Anesthesiology and Critical Care Medicine, Hôpital Européen Georges-Pompidou, Université Paris-Descartes Sorbonne Paris Cité, France
| | - F Chrétien
- Infection and Epidemiology Department, Institut Pasteur Human Histopathology and Animal Models Unit, Paris, France; TRIGGERSEP, F-CRIN Network, Versailles, France; Neuropathology Laboratory, Sainte-Anne Hospital, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.
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Orwoll ES, Wiedrick J, Jacobs J, Baker ES, Piehowski P, Petyuk V, Gao Y, Shi T, Smith RD, Bauer DC, Cummings SR, Nielson CM, Lapidus J. High-throughput serum proteomics for the identification of protein biomarkers of mortality in older men. Aging Cell 2018; 17. [PMID: 29399943 PMCID: PMC5847880 DOI: 10.1111/acel.12717] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2017] [Indexed: 01/17/2023] Open
Abstract
The biological perturbations associated with incident mortality are not well elucidated, and there are limited biomarkers for the prediction of mortality. We used a novel high‐throughput proteomics approach to identify serum peptides and proteins associated with 5‐year mortality in community‐dwelling men age ≥65 years who participated in a longitudinal observational study of musculoskeletal aging (Osteoporotic Fractures in Men: MrOS). In a discovery phase, serum specimens collected at baseline in 2473 men were analyzed using liquid chromatography–ion mobility–mass spectrometry, and incident mortality in the subsequent 5 years was ascertained by tri‐annual questionnaire. Rigorous statistical methods were utilized to identify 56 peptides (31 proteins) that were associated with 5‐year mortality. In an independent replication phase, selected reaction monitoring was used to examine 21 of those peptides in baseline serum from 750 additional men; 81% of those peptides remained significantly associated with mortality. Mortality‐associated proteins included a variety involved in inflammation or complement activation; several have been previously linked to mortality (e.g., C‐reactive protein, alpha 1‐antichymotrypsin) and others are not previously known to be associated with mortality. Other novel proteins of interest included pregnancy‐associated plasma protein, VE‐cadherin, leucine‐rich α‐2 glycoprotein 1, vinculin, vitronectin, mast/stem cell growth factor receptor, and Saa4. A panel of peptides improved the predictive value of a commonly used clinical predictor of mortality. Overall, these results suggest that complex inflammatory pathways, and proteins in other pathways, are linked to 5‐year mortality risk. This work may serve to identify novel biomarkers for near‐term mortality.
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Affiliation(s)
| | | | - Jon Jacobs
- Biological Science Division; Pacific Northwest National Laboratory; Richland WA USA
| | - Erin S. Baker
- Biological Science Division; Pacific Northwest National Laboratory; Richland WA USA
| | - Paul Piehowski
- Biological Science Division; Pacific Northwest National Laboratory; Richland WA USA
| | - Vladislav Petyuk
- Biological Science Division; Pacific Northwest National Laboratory; Richland WA USA
| | - Yuqian Gao
- Biological Science Division; Pacific Northwest National Laboratory; Richland WA USA
| | - Tujin Shi
- Biological Science Division; Pacific Northwest National Laboratory; Richland WA USA
| | - Richard D. Smith
- Biological Science Division; Pacific Northwest National Laboratory; Richland WA USA
| | - Douglas C. Bauer
- Department of Medicine; University of California; San Francisco CA USA
| | - Steven R Cummings
- California Pacific Medical Center Research Institute; San Francisco CA USA
| | | | - Jodi Lapidus
- Oregon Health & Science University; Portland OR USA
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Nakamori M, Hamanaka K, Thomas JD, Wang ET, Hayashi YK, Takahashi MP, Swanson MS, Nishino I, Mochizuki H. Aberrant Myokine Signaling in Congenital Myotonic Dystrophy. Cell Rep 2017; 21:1240-1252. [PMID: 29091763 PMCID: PMC5689469 DOI: 10.1016/j.celrep.2017.10.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/02/2017] [Accepted: 10/04/2017] [Indexed: 02/07/2023] Open
Abstract
Myotonic dystrophy types 1 (DM1) and 2 (DM2) are dominantly inherited neuromuscular disorders caused by a toxic gain of function of expanded CUG and CCUG repeats, respectively. Although both disorders are clinically similar, congenital myotonic dystrophy (CDM), a severe DM form, is found only in DM1. CDM is also characterized by muscle fiber immaturity not observed in adult DM, suggesting specific pathological mechanisms. Here, we revealed upregulation of the interleukin-6 (IL-6) myokine signaling pathway in CDM muscles. We also found a correlation between muscle immaturity and not only IL-6 expression but also expanded CTG repeat length and CpG methylation status upstream of the repeats. Aberrant CpG methylation was associated with transcriptional dysregulation at the repeat locus, increasing the toxic RNA burden that upregulates IL-6. Because the IL-6 pathway is involved in myocyte maturation and muscle atrophy, our results indicate that enhanced RNA toxicity contributes to severe CDM phenotypes through aberrant IL-6 signaling.
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Affiliation(s)
- Masayuki Nakamori
- Department of Neurology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan.
| | - Kohei Hamanaka
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8502, Japan
| | - James D Thomas
- Department of Molecular Genetics and Microbiology, Center for NeuroGenetics and the Genetics Institute, University of Florida, College of Medicine, Gainesville, FL 32610, USA
| | - Eric T Wang
- Department of Molecular Genetics and Microbiology, Center for NeuroGenetics and the Genetics Institute, University of Florida, College of Medicine, Gainesville, FL 32610, USA
| | - Yukiko K Hayashi
- Department of Pathophysiology, Tokyo Medical University, Shinjuku, Tokyo 160-0022, Japan
| | - Masanori P Takahashi
- Department of Neurology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan; Department of Functional Diagnostic Science, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Maurice S Swanson
- Department of Molecular Genetics and Microbiology, Center for NeuroGenetics and the Genetics Institute, University of Florida, College of Medicine, Gainesville, FL 32610, USA
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8502, Japan
| | - Hideki Mochizuki
- Department of Neurology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
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Experimental Periodontitis in the Potentialization of the Effects of Immobilism in the Skeletal Striated Muscle. Inflammation 2017; 40:2000-2011. [PMID: 28822015 DOI: 10.1007/s10753-017-0640-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This study aims to evaluate if ligature-induced periodontitis can potentiates the deleterious effects of immobilization in the skeletal striated muscle, contributing to the development of muscle atrophy due to disuse. Forty Wistar rats were divided into four groups: (1) Control Group (CG), (2) Periodontal Disease (PDG), (3) Immobilized (IG), and (4) Immobilized with Periodontal Disease (IPDG). Periodontal disease was induced for 30 days, with ligature method, and the immobilization was performed with cast bandage for 15 days. Prior to euthanasia, nociceptive threshold and muscular grasping force were evaluated. Afterwards, the soleus muscle was dissected and processed for sarcomere counting and morphological/morphometric analysis. For data analysis, was used the one-way ANOVA and post-test Tukey (p < 0.05). The IG and IPDG presented lower muscle weight, lower muscular grip strength, and less number of sarcomeres compared to CG. The PDG showed reduction of muscle strength and nociceptive threshold after 15 days of periodontal disease and increased connective tissue compared to CG. The IPDG presented lower muscle length and nociceptive threshold. The IG presented reduction in cross-sectional area and smaller diameter, increase in the number of nuclei and a nucleus/fiber ratio, decrease in the number of capillaries and capillary/fiber ratio, with increase in connective tissue. The IPDG had increased nucleus/fiber ratio, decreased capillaries, and increased connective tissue when compared to the IG. The IPDG presented greater muscle tissue degeneration and increased inflammatory cells compared to the other groups. Ligature-induced periodontitis potentiated the deleterious effects of immobilization of the skeletal striated muscle.
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