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Christiansen D, Bishop DJ. Aerobic-interval exercise with blood flow restriction potentiates early markers of metabolic health in man. Acta Physiol (Oxf) 2022; 234:e13769. [PMID: 34984835 DOI: 10.1111/apha.13769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/02/2021] [Accepted: 01/01/2022] [Indexed: 12/06/2022]
Abstract
AIM This study examined whether aerobic-interval exercise with blood flow restriction (BFR) potentiates early markers of metabolic health compared to exercise with systemic hypoxia or normoxia in man. METHODS In a randomized-crossover fashion, eight healthy men completed nine 2-minute running bouts at 105% of their lactate threshold on three occasions separated by one week, either with BFR (BFR-trial), systemic hypoxia (HYP-trial) or normoxia (control; CON-trial). Near-infrared spectroscopy was used to assess the muscle level of hypoxia. A muscle biopsy was collected at rest and 3 hours after exercise to quantify genes involved in cholesterol synthesis (PGC-1α2), glucose disposal (GLUT4) and capillary growth (HIF-1α; VEGFA), as well as mitochondrial respiration (PGC-1α2/3), uncoupling (UCP3) and expansion (p53; COXIV-1/2; CS; AMPKα1/2). RESULTS The muscle level of hypoxia was matched between the BFR-trial and HYP-trial (~90%; P > .05), which was greater than the CON-trial (~70%; P < .05). PGC-1α2 increased most in the BFR-trial (16-fold vs CON-trial; 11-fold vs HYP-trial; P < .05). GLUT4 and VEGFA selectively increased by 2.0 and 3.4-fold, respectively in BFR-trial (P < .05), which was greater than CON-trial (1.2 and 1.3 fold) and HYP-trial (1.2 and 1.8 fold; P < .05). UCP3 increased more in BFR-trial than the HYP-trial (4.3 vs 1.6 fold), but was not different between BFR-trial and CON-trial (2.1 fold) or between CON-trial and HYP-trial (P > .05). No trial differences were evident for other genes (P > .05). CONCLUSION Independent of the muscle level of hypoxia, BFR-exercise potentiates early markers of metabolic health associated with the regulation of cholesterol production and glucose homeostasis in man.
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Affiliation(s)
- Danny Christiansen
- Institute for Health & Sport Victoria University Melbourne Victoria Australia
| | - David J. Bishop
- Institute for Health & Sport Victoria University Melbourne Victoria Australia
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Blixt C, Larsson M, Isaksson B, Ljungqvist O, Rooyackers O. The effect of glucose control in liver surgery on glucose kinetics and insulin resistance. Clin Nutr 2021; 40:4526-4534. [PMID: 34224987 DOI: 10.1016/j.clnu.2021.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 05/12/2021] [Accepted: 05/24/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND & AIMS Clinical outcome is negatively correlated to postoperative insulin resistance and hyperglycemia. The magnitude of insulin resistance can be modulated by glucose control, preoperative nutrition, adequate pain management and minimal invasive surgery. Effects of glucose control on perioperative glucose kinetics in liver surgery is less studied. METHODS 18 patients scheduled for open hepatectomy were studied per protocol in this prospective, randomized study. In the treatment group (n = 9), insulin was administered intravenously to keep arterial blood glucose between 6 and 8 mmol/l during surgery. The control group (n = 9) received insulin if blood glucose >11.5 mmol/l. Insulin sensitivity was measured by an insulin clamp on the day before surgery and immediately postoperatively. Glucose kinetics were assessed during the clamp and surgery. RESULTS Mean intraoperative glucose was 7.0 mM (SD 0.7) vs 9.1 mM (SD 1.9) in the insulin and control group respectively (p < 0.001; ANOVA). Insulin sensitivity decreased in both groups but significantly (p = 0.03, ANOVA) more in the control group (M value: 4.6 (4.4-6.8) to 2.1 (1.2-2.6) and 4.6 (4.1-5.0) to 0.6 (0.1-1.8) mg/kg/min in the treatment and control group respectively). Endogenous glucose production (EGP) increased and glucose disposal (WGD) decreased significantly between the pre- and post-operative clamps in both groups, with no significant difference between the groups. Intraoperative kinetics demonstrated that glucose control decreased EGP (p = 0.02) while WGD remained unchanged (p = 0.67). CONCLUSION Glucose control reduces postoperative insulin resistance in liver surgery. EGP increases and WGD is diminished immediately postoperatively. Insulin seems to modulate both reactions, but mostly the WGD is affected. Intraoperative EGP decreased while WGD remained unaltered. REGISTRATION NUMBER OF CLINICAL TRIAL ANZCTR 12614000278639.
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Affiliation(s)
- Christina Blixt
- Dept of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden; Dept of Anesthesia and Intensive Care, Karolinska University Hospital Huddinge, Stockholm, Sweden.
| | - Mirjam Larsson
- Dept of Anesthesia and Intensive Care, Karolinska University Hospital Huddinge, Stockholm, Sweden.
| | - Bengt Isaksson
- Dept of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
| | - Olle Ljungqvist
- School of Medical Sciences, Dept of Surgery, Örebro University & Department of Surgery, Örebro University Hospital, SE-701 85, Örebro, Sweden.
| | - Olav Rooyackers
- Dept of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden.
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Atkins R, Constantin-Teodosiu D, Varadhan KK, Constantin D, Lobo DN, Greenhaff PL. Major elective abdominal surgery acutely impairs lower limb muscle pyruvate dehydrogenase complex activity and mitochondrial function. Clin Nutr 2021; 40:1046-1051. [PMID: 32711950 PMCID: PMC7957361 DOI: 10.1016/j.clnu.2020.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/06/2020] [Accepted: 07/06/2020] [Indexed: 11/21/2022]
Abstract
BACKGROUND & AIMS This post hoc study aimed to determine whether major elective abdominal surgery had any acute impact on mitochondrial pyruvate dehydrogenase complex (PDC) activity and maximal mitochondrial ATP production rates (MAPR) in a large muscle group (vastus lateralis -VL) distant to the site of surgical trauma. METHODS Fifteen patients undergoing major elective open abdominal surgery were studied. Muscle biopsies were obtained after the induction of anesthesia from the VL immediately before and after surgery for the determination of PDC and maximal MAPR (utilizing a variety of energy substrates). RESULTS Muscle PDC activity was reduced by >50% at the end of surgery compared with pre-surgery (p < 0.05). Muscle MAPR were comprehensively suppressed by surgery for the substrate combinations: glutamate + succinate; glutamate + malate; palmitoylcarnitine + malate; and pyruvate + malate (all p < 0.05), and could not be explained by a lower mitochondrial yield. CONCLUSIONS PDC activity and mitochondrial ATP production capacity were acutely impaired in muscle distant to the site of surgical trauma. In keeping with the limited data available, we surmise these events resulted from the general anesthesia procedures employed and the surgery related trauma. These findings further the understanding of the acute dysregulation of mitochondrial function in muscle distant to the site of major surgical trauma in patients, and point to the combination of general anesthesia and trauma related inflammation as being drivers of muscle metabolic insult that warrants further investigation. CLINICAL TRIAL REGISTRATION Registered at (NCT01134809).
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Affiliation(s)
- Ryan Atkins
- MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - Dumitru Constantin-Teodosiu
- MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - Krishna K Varadhan
- Gastrointestinal Surgery, Nottingham Digestive Diseases Centre, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - Despina Constantin
- MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK
| | - Dileep N Lobo
- MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK; Gastrointestinal Surgery, Nottingham Digestive Diseases Centre, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK; National Institute of Health Research (NIHR) Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK.
| | - Paul L Greenhaff
- MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK; National Institute of Health Research (NIHR) Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK
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Hagve M, Gjessing PF, Hole MJ, Jansen KM, Fuskevåg OM, Mollnes TE, Larsen TS, Irtun Ø. Perioperative Infusion of Glucagon-Like Peptide-1 Prevents Insulin Resistance After Surgical Trauma in Female Pigs. Endocrinology 2019; 160:2892-2902. [PMID: 31589305 DOI: 10.1210/en.2019-00374] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 09/30/2019] [Indexed: 12/13/2022]
Abstract
Insulin resistance is an independent negative predictor of outcome after elective surgery and increases mortality among surgical patients in intensive care. The incretin hormone glucagon-like peptide-1 (GLP-1) potentiates glucose-induced insulin release from the pancreas but may also increase insulin sensitivity in skeletal muscle and directly suppress hepatic glucose release. Here, we investigated whether a perioperative infusion of GLP-1 could counteract the development of insulin resistance after surgery. Pigs were randomly assigned to three groups; surgery/control, surgery/GLP-1, and sham/GLP-1. Both surgery groups underwent major abdominal surgery. Whole-body glucose disposal (WGD) and endogenous glucose release (EGR) were assessed preoperatively and postoperatively using D-[6,6-2H2]-glucose infusion in combination with hyperinsulinemic euglycemic step-clamping. In the surgery/control group, peripheral insulin sensitivity (i.e., WGD) was reduced by 44% relative to preoperative conditions, whereas the corresponding decline was only 9% for surgery/GLP-1 (P < 0.05). Hepatic insulin sensitivity (i.e., EGR) remained unchanged in the surgery/control group but was enhanced after GLP-1 infusion in both surgery and sham animals (40% and 104%, respectively, both P < 0.05). Intraoperative plasma glucose increased in surgery/control (∼20%) but remained unchanged in both groups receiving GLP-1 (P < 0.05). GLP-1 diminished an increase in postoperative glucagon levels but did not affect skeletal muscle glycogen or insulin signaling proteins after surgery. We show that GLP-1 improves intraoperative glycemic control, diminishes peripheral insulin resistance after surgery, and suppresses EGR. This study supports the use of GLP-1 to prevent development of postoperative insulin resistance.
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Affiliation(s)
- Martin Hagve
- Gastrosurgical Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Cardiovascular Research Group, Department of Medical Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Petter F Gjessing
- Gastrosurgical Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Digestive Surgery, University Hospital of North Norway, Tromsø, Norway
| | - Mikal J Hole
- Gastrosurgical Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Kirsten M Jansen
- Cardiovascular Research Group, Department of Medical Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Ole Martin Fuskevåg
- Department of Laboratory Medicine, Division of Diagnostic Services, University Hospital of North Norway, Tromsø, Norway
| | - Tom Eirik Mollnes
- Research Laboratory, Nordland Hospital, Bodø, Norway
- Faculty of Health Sciences, K. G. Jebsen TREC, UiT The Arctic University of Norway, Tromsø, Norway
- Center of Molecular Inflammation Research and Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Immunology, Oslo University Hospital, and K. G. Jebsen IRC, University of Oslo, Oslo, Norway
| | - Terje S Larsen
- Cardiovascular Research Group, Department of Medical Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Øivind Irtun
- Gastrosurgical Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Digestive Surgery, University Hospital of North Norway, Tromsø, Norway
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Gao C, Cheng H, Xu N, Li Y, Chen Y, Wei Y, Gao B, Fu J, Huo K, Xiong W. Poly(dopamine) and Ag nanoparticle-loaded TiO 2 nanotubes with optimized antibacterial and ROS-scavenging bioactivities. Nanomedicine (Lond) 2019; 14:803-818. [PMID: 30638128 DOI: 10.2217/nnm-2018-0131] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM To create polydopamine (PDA) and Ag nanoparticle-loaded TiO2 nanotubes coating on titanium (Ti) alloy. MATERIALS & METHODS TiO2-PDA-Ag coating was fabricated on Ti implants by electrochemical anodization. The in vitro and in vivo bactericidal and antibiofilm activities were tested. Intracellular reactive oxygen species (ROS) and antioxidative capability were measured, and cell proliferation, adhesion and cell morphology were characterized. RESULTS TiO2-PDA-Ag coating showed satisfactory bactericidal and antibiofilm activities in vitro and in vivo, improved Ag release pattern, evident ROS scavenging properties and enhanced cell adhesion and proliferation. CONCLUSION Our study successfully fabricated a PDA and Ag nanoparticle-loaded TiO2 nanotubes coating on Ti alloy. The improved Ag release kinetics and ROS-scavenging properties achieve an optimal balance between antibacterial ability and biocompatibility.
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Affiliation(s)
- Chenghao Gao
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, 1095 Jiefang Avenue, Wuhan, Hubei 430030, PR China
| | - Hao Cheng
- Department of Orthopedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Na Xu
- Institute of Biology & Medicine, Wuhan University of Science & Technology, Wuhan 430065, PR China
| | - Yong Li
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, 1095 Jiefang Avenue, Wuhan, Hubei 430030, PR China
| | - Yangmengfan Chen
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, 1095 Jiefang Avenue, Wuhan, Hubei 430030, PR China
| | - Yong Wei
- The State Key Laboratory of Refractories & Metallurgy, School of Materials & Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
| | - Biao Gao
- The State Key Laboratory of Refractories & Metallurgy, School of Materials & Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
| | - Jijiang Fu
- The State Key Laboratory of Refractories & Metallurgy, School of Materials & Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
| | - Kaifu Huo
- The State Key Laboratory of Refractories & Metallurgy, School of Materials & Metallurgy, Wuhan University of Science & Technology, Wuhan 430081, PR China
| | - Wei Xiong
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, 1095 Jiefang Avenue, Wuhan, Hubei 430030, PR China
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de Souza Cardoso J, Oliveira PS, Bona NP, Vasconcellos FA, Baldissarelli J, Vizzotto M, Soares MSP, Ramos VP, Spanevello RM, Lencina CL, Tavares RG, Stefanello FM. Antioxidant, antihyperglycemic, and antidyslipidemic effects of Brazilian-native fruit extracts in an animal model of insulin resistance. Redox Rep 2017; 23:41-46. [PMID: 29088999 PMCID: PMC6748693 DOI: 10.1080/13510002.2017.1375709] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Objective: Insulin resistance (IR) plays an important role in the
development of many diseases, such as diabetes mellitus. Therefore, the aim of
the present study was to evaluate the effects of the extracts from fruits native
to Brazil on metabolic parameters and hepatic oxidative markers in an animal
model of insulin resistance induced by dexamethasone (DEX). Methods: Wistar rats received water or extracts of Eugenia
uniflora or Psidium cattleianum, once a day for 21
days. For the last 5 days, the rats received an intraperitoneal injection of
saline or DEX. Results: DEX caused a reduction in body weight gain and relative
pancreatic weight, as well as glucose intolerance, and an increase in serum
glucose and triacylglycerol levels. The extracts were found to prevent
hyperglycemia and hypertriglyceridemia. DEX caused an increase in the levels of
thiobarbituric acid-reactive substances and reactive oxygen species production
in the liver of rats, and both extracts prevented these changes. In addition,
hepatic glutathione peroxidase activity was reduced by DEX. However, total thiol
content and activities of catalase, superoxide dismutase, and
delta-aminolevulinate dehydratase were not altered in any of the tested
groups. Conclusion: Fruit extracts of E. uniflora and
P. cattleianum exhibited considerable
antihyperglycemic, antidyslipidemic, and antioxidant effects, and may be useful
in the therapeutic management of alterations due to IR.
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Affiliation(s)
- Juliane de Souza Cardoso
- a Laboratório de Biomarcadores, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
| | - Pathise Souto Oliveira
- a Laboratório de Biomarcadores, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
| | - Natália Pontes Bona
- a Laboratório de Biomarcadores, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
| | - Flávia Aleixo Vasconcellos
- b Laboratório de Química Aplicada a Bioativos, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
| | - Jucimara Baldissarelli
- c Laboratório de Enzimologia Toxicológica, Centro de Ciências Naturais e Exatas , Universidade Federal de Santa Maria , Santa Maria , Brazil
| | - Marcia Vizzotto
- d Empresa Brasileira de Pesquisa Agropecuária , Centro de Pesquisa Agropecuária de Clima Temperado , Pelotas , Brazil
| | - Mayara Sandrielly Pereira Soares
- e Laboratório de Neuroquímica, Inflamação e Câncer, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
| | - Vanessa Plasse Ramos
- a Laboratório de Biomarcadores, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
| | - Roselia Maria Spanevello
- e Laboratório de Neuroquímica, Inflamação e Câncer, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
| | - Claiton Leoneti Lencina
- a Laboratório de Biomarcadores, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
| | - Rejane Giacomelli Tavares
- a Laboratório de Biomarcadores, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
| | - Francieli Moro Stefanello
- a Laboratório de Biomarcadores, Centro de Ciências Químicas, Farmacêuticas e de Alimentos , Universidade Federal de Pelotas , Pelotas , Brazil
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Ceco E, Weinberg SE, Chandel NS, Sznajder JI. Metabolism and Skeletal Muscle Homeostasis in Lung Disease. Am J Respir Cell Mol Biol 2017; 57:28-34. [PMID: 28085493 DOI: 10.1165/rcmb.2016-0355tr] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
There is increased awareness that patients with lung diseases develop muscle dysfunction. Muscle dysfunction is a major contributor to a decreased quality of life in patients with chronic pulmonary diseases. Furthermore, muscle dysfunction exacerbates lung disease outcome, as a decrease in muscle mass and function are associated with increased morbidity, often long after critical illness or lung disease has been resolved. As we are learning more about the role of metabolism in health and disease, we are appreciating more the direct role of metabolism in skeletal muscle homeostasis. Altered metabolism is associated with numerous skeletal muscle pathologies and, conversely, skeletal muscle diseases are associated with significant changes in metabolic pathways. In this review, we highlight the role of metabolism in the regulation of skeletal muscle homeostasis. Understanding the metabolic pathways that underlie skeletal muscle wasting is of significant clinical interest for critically ill patients as well as patients with chronic lung disease, in which proper skeletal muscle function is essential to disease outcome.
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Affiliation(s)
- Ermelinda Ceco
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois
| | - Samuel E Weinberg
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois
| | - Navdeep S Chandel
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois
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