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Khattar G, Bou Sanayeh E. Advancing critical care recovery: The pivotal role of machine learning in early detection of intensive care unit-acquired weakness. World J Clin Cases 2024; 12:4455-4459. [DOI: 10.12998/wjcc.v12.i21.4455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/14/2024] [Accepted: 05/27/2024] [Indexed: 06/30/2024] Open
Abstract
This editorial explores the significant challenge of intensive care unit-acquired weakness (ICU-AW), a prevalent condition affecting critically ill patients, characterized by profound muscle weakness and complicating patient recovery. Highlighting the paradox of modern medical advances, it emphasizes the urgent need for early identification and intervention to mitigate ICU-AW's impact. Innovatively, the study by Wang et al is showcased for employing a multilayer perceptron neural network model, achieving high accuracy in predicting ICU-AW risk. This advancement underscores the potential of neural network models in enhancing patient care but also calls for continued research to address limitations and improve model applicability. The editorial advocates for the development and validation of sophisticated predictive tools, aiming for personalized care strategies to reduce ICU-AW incidence and severity, ultimately improving patient outcomes in critical care settings.
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Affiliation(s)
- Georges Khattar
- Department of Medicine, Staten Island University Hospital, Staten Island, NY 10305, United States
| | - Elie Bou Sanayeh
- Department of Medicine, Staten Island University Hospital, Staten Island, NY 10305, United States
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2
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Liu J, Xu Z, Luo S, Bai Y, Feng J, Li F. Risk factors for ICU-acquired weakness in sepsis patients: A retrospective study of 264 patients. Heliyon 2024; 10:e32253. [PMID: 38867955 PMCID: PMC11168428 DOI: 10.1016/j.heliyon.2024.e32253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/14/2024] Open
Abstract
Background Sepsis is a common critical illness in intensive care unit (ICU) and an important risk factor for intensive care unit-acquired weakness (ICU-AW). The objective of the study is to analyze the risk factors of ICU-AW in septic patients. Methods A total of 264 septic patients admitted to the General Hospital of the Western Theater Command from January 2018 to April 2022 were included in this study. The cohort was divided into 2 groups according to the presence or absence of ICU-AW. Clinical characteristics included age, sex, body mass index, length of ICU stay, multiple organ dysfunction syndrome, acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ), mechanical ventilation time, intubation, tracheotomy, protective constraint, lactic acid, fasting blood glucose, etc. The clinical characteristics of sepsis were evaluated using logistic regression analysis. Results A total of 114 septic patients suffered ICU-AW during their ICU stay. Multivariate binary logistic regression analysis showed that APACHE Ⅱ score, mechanical ventilation time, protective constraint, and lactic acid were independent risk factors for ICU-AW in septic patients. The areas under the receiver operating characteristic curve (AUCs) were 0.791, 0.740 and 0.812, all P < 0.05, and the optimal cut-off values were 24 points, 5 days and 2.12 mmol/L, respectively. Conclusions A high APACHE Ⅱ score, long mechanical ventilation time, protective constraint and high lactate concentration are independent risk factors for ICU-AW in septic patients. An APACHE Ⅱ score greater than 24 points, mechanical ventilation time longer than 5 days and lactate concentration higher than 2.12 mmol/L are likely to cause ICU-AW.
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Affiliation(s)
- Jiajiao Liu
- Department of Critical Care Medicine, The General Hospital of Western Theater Command PLA, Chengdu, 610036, China
| | - Zhaoxia Xu
- Department of Emergency Department, The General Hospital of Western Theater Command PLA, Chengdu, 610036, China
| | - Shuhong Luo
- Department of Critical Care Medicine, The General Hospital of Western Theater Command PLA, Chengdu, 610036, China
| | - Yujie Bai
- Department of Critical Care Medicine, The General Hospital of Western Theater Command PLA, Chengdu, 610036, China
| | - Jian Feng
- Department of Critical Care Medicine, The General Hospital of Western Theater Command PLA, Chengdu, 610036, China
| | - Fuxiang Li
- Department of Critical Care Medicine, The General Hospital of Western Theater Command PLA, Chengdu, 610036, China
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3
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Piel S, McManus MJ, Heye KN, Beaulieu F, Fazelinia H, Janowska JI, MacTurk B, Starr J, Gaudio H, Patel N, Hefti MM, Smalley ME, Hook JN, Kohli NV, Bruton J, Hallowell T, Delso N, Roberts A, Lin Y, Ehinger JK, Karlsson M, Berg RA, Morgan RW, Kilbaugh TJ. Effect of dimethyl fumarate on mitochondrial metabolism in a pediatric porcine model of asphyxia-induced in-hospital cardiac arrest. Sci Rep 2024; 14:13852. [PMID: 38879681 PMCID: PMC11180202 DOI: 10.1038/s41598-024-64317-9] [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: 03/01/2024] [Accepted: 06/07/2024] [Indexed: 06/19/2024] Open
Abstract
Neurological and cardiac injuries are significant contributors to morbidity and mortality following pediatric in-hospital cardiac arrest (IHCA). Preservation of mitochondrial function may be critical for reducing these injuries. Dimethyl fumarate (DMF) has shown potential to enhance mitochondrial content and reduce oxidative damage. To investigate the efficacy of DMF in mitigating mitochondrial injury in a pediatric porcine model of IHCA, toddler-aged piglets were subjected to asphyxia-induced CA, followed by ventricular fibrillation, high-quality cardiopulmonary resuscitation, and random assignment to receive either DMF (30 mg/kg) or placebo for four days. Sham animals underwent similar anesthesia protocols without CA. After four days, tissues were analyzed for mitochondrial markers. In the brain, untreated CA animals exhibited a reduced expression of proteins of the oxidative phosphorylation system (CI, CIV, CV) and decreased mitochondrial respiration (p < 0.001). Despite alterations in mitochondrial content and morphology in the myocardium, as assessed per transmission electron microscopy, mitochondrial function was unchanged. DMF treatment counteracted 25% of the proteomic changes induced by CA in the brain, and preserved mitochondrial structure in the myocardium. DMF demonstrates a potential therapeutic benefit in preserving mitochondrial integrity following asphyxia-induced IHCA. Further investigation is warranted to fully elucidate DMF's protective mechanisms and optimize its therapeutic application in post-arrest care.
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Affiliation(s)
- Sarah Piel
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA.
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA.
- Department of Cardiology, Pulmonology, and Vascular Medicine, University Hospital Düsseldorf, Medical Faculty of the Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
- CARID, Cardiovascular Research Institute Düsseldorf, Medical Faculty of the Heinrich-Heine-University, Düsseldorf, Germany.
| | - Meagan J McManus
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Kristina N Heye
- Division of Neurology, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Forrest Beaulieu
- Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Hossein Fazelinia
- Proteomics Core Facility, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Joanna I Janowska
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Bryce MacTurk
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Jonathan Starr
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Hunter Gaudio
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Nisha Patel
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Marco M Hefti
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Martin E Smalley
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Jordan N Hook
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Neha V Kohli
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - James Bruton
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Thomas Hallowell
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Nile Delso
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Anna Roberts
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Yuxi Lin
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Johannes K Ehinger
- Mitochondrial Medicine, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
- Otorhinolaryngology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
- Otorhinolaryngology, Head and Neck Surgery, Skåne University Hospital, Lund, Sweden
| | | | - Robert A Berg
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Ryan W Morgan
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
| | - Todd J Kilbaugh
- Resuscitation Science Center of Emphasis, The Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA, 19104, USA
- Department of Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, USA
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Li LF, Yu CC, Huang CY, Wu HP, Chu CM, Liu PC, Liu YY. Suppression of Ventilation-Induced Diaphragm Fibrosis through the Phosphoinositide 3-Kinase-γ in a Murine Bleomycin-Induced Acute Lung Injury Model. Int J Mol Sci 2024; 25:6370. [PMID: 38928077 PMCID: PMC11203512 DOI: 10.3390/ijms25126370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/06/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Mechanical ventilation (MV), used in patients with acute lung injury (ALI), induces diaphragmatic myofiber atrophy and contractile inactivity, termed ventilator-induced diaphragm dysfunction. Phosphoinositide 3-kinase-γ (PI3K-γ) is crucial in modulating fibrogenesis during the reparative phase of ALI; however, the mechanisms regulating the interactions among MV, myofiber fibrosis, and PI3K-γ remain unclear. We hypothesized that MV with or without bleomycin treatment would increase diaphragm muscle fibrosis through the PI3K-γ pathway. Five days after receiving a single bolus of 0.075 units of bleomycin intratracheally, C57BL/6 mice were exposed to 6 or 10 mL/kg of MV for 8 h after receiving 5 mg/kg of AS605240 intraperitoneally. In wild-type mice, bleomycin exposure followed by MV 10 mL/kg prompted significant increases in disruptions of diaphragmatic myofibrillar organization, transforming growth factor-β1, oxidative loads, Masson's trichrome staining, extracellular collagen levels, positive staining of α-smooth muscle actin, PI3K-γ expression, and myonuclear apoptosis (p < 0.05). Decreased diaphragm contractility and peroxisome proliferator-activated receptor-γ coactivator-1α levels were also observed (p < 0.05). MV-augmented bleomycin-induced diaphragm fibrosis and myonuclear apoptosis were attenuated in PI3K-γ-deficient mice and through AS605240-induced inhibition of PI3K-γ activity (p < 0.05). MV-augmented diaphragm fibrosis after bleomycin-induced ALI is partially mediated by PI3K-γ. Therapy targeting PI3K-γ may ameliorate MV-associated diaphragm fibrosis.
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Affiliation(s)
- Li-Fu Li
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung 20401, Taiwan; (L.-F.L.); (C.-C.Y.); (C.-Y.H.); (H.-P.W.); (C.-M.C.); (P.-C.L.)
- Department of Internal Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Chung-Chieh Yu
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung 20401, Taiwan; (L.-F.L.); (C.-C.Y.); (C.-Y.H.); (H.-P.W.); (C.-M.C.); (P.-C.L.)
- Department of Internal Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Chih-Yu Huang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung 20401, Taiwan; (L.-F.L.); (C.-C.Y.); (C.-Y.H.); (H.-P.W.); (C.-M.C.); (P.-C.L.)
- Department of Internal Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Huang-Pin Wu
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung 20401, Taiwan; (L.-F.L.); (C.-C.Y.); (C.-Y.H.); (H.-P.W.); (C.-M.C.); (P.-C.L.)
- Department of Internal Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Chien-Ming Chu
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung 20401, Taiwan; (L.-F.L.); (C.-C.Y.); (C.-Y.H.); (H.-P.W.); (C.-M.C.); (P.-C.L.)
- Department of Internal Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Ping-Chi Liu
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chang Gung Memorial Hospital, Keelung 20401, Taiwan; (L.-F.L.); (C.-C.Y.); (C.-Y.H.); (H.-P.W.); (C.-M.C.); (P.-C.L.)
- Department of Internal Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Yung-Yang Liu
- Chest Department, Taipei Veterans General Hospital, Taipei 112201, Taiwan
- School of Medicine, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
- Institute of Clinical Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
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Kurt C, Yumusakhuylu Y, Erhan B. A Case Report of Probable Secondary Sarcopenia After Intensive Care Hospitalization. J Frailty Sarcopenia Falls 2024; 9:157-160. [PMID: 38835624 PMCID: PMC11145097 DOI: 10.22540/jfsf-09-157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2024] [Indexed: 06/06/2024] Open
Abstract
Malnutrition, inflammation, comorbid diseases, and inactivity are known causes of sarcopenia. It results in clinical consequences like fractures, falls, low quality of life, cognitive dysfunction, and mortality. Especially in the treatment of patients with prolonged immobilization syndrome, management should not only focus on functional limitations but patients should also be evaluated and followed up for sarcopenia. In this case report, we present the management of probable secondary sarcopenia in the intensive care unit as a result of urosepsis and discuss it in the light of the literature.
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Affiliation(s)
- Cihat Kurt
- Istanbul Medeniyet University, Faculty of Medicine, Department of Physical Medicine and Rehabilitation, Istanbul, Turkey
| | - Yasemin Yumusakhuylu
- Istanbul Medeniyet University, Faculty of Medicine, Department of Physical Medicine and Rehabilitation, Istanbul, Turkey
| | - Belgin Erhan
- Istanbul Medeniyet University, Faculty of Medicine, Department of Physical Medicine and Rehabilitation, Istanbul, Turkey
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Chen J, Huang M. Intensive care unit-acquired weakness: Recent insights. JOURNAL OF INTENSIVE MEDICINE 2024; 4:73-80. [PMID: 38263973 PMCID: PMC10800771 DOI: 10.1016/j.jointm.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/16/2023] [Accepted: 07/07/2023] [Indexed: 01/25/2024]
Abstract
Intensive care unit-acquired weakness (ICU-AW) is a common complication in critically ill patients and is associated with a variety of adverse outcomes. These include the need for prolonged mechanical ventilation and ICU stay; higher ICU, in-hospital, and 1-year mortality; and increased in-hospital costs. ICU-AW is associated with multiple risk factors including age, underlying disease, severity of illness, organ failure, sepsis, immobilization, receipt of mechanical ventilation, and other factors related to critical care. The pathological mechanism of ICU-AW remains unclear and may be considerably varied. This review aimed to evaluate recent insights into ICU-AW from several aspects including risk factors, pathophysiology, diagnosis, and treatment strategies; this provides new perspectives for future research.
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Affiliation(s)
- Juan Chen
- Department of General Intensive Care Unit, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang, China
| | - Man Huang
- Department of General Intensive Care Unit, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang, China
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Umbrello M, Brogi E, Formenti P, Corradi F, Forfori F. Ultrasonographic Features of Muscular Weakness and Muscle Wasting in Critically Ill Patients. J Clin Med 2023; 13:26. [PMID: 38202033 PMCID: PMC10780243 DOI: 10.3390/jcm13010026] [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: 11/21/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Muscle wasting begins as soon as in the first week of one's ICU stay and patients with multi-organ failure lose more muscle mass and suffer worse functional impairment as a consequence. Muscle wasting and weakness are mainly characterized by a generalized, bilateral lower limb weakness. However, the impairment of the respiratory and/or oropharyngeal muscles can also be observed with important consequences for one's ability to swallow and cough. Muscle wasting represents the result of the disequilibrium between breakdown and synthesis, with increased protein degradation relative to protein synthesis. It is worth noting that the resulting functional disability can last up to 5 years after discharge, and it has been estimated that up to 50% of patients are not able to return to work during the first year after ICU discharge. In recent years, ultrasound has played an increasing role in the evaluation of muscle. Indeed, ultrasound allows an objective evaluation of the cross-sectional area, the thickness of the muscle, and the echogenicity of the muscle. Furthermore, ultrasound can also estimate the thickening fraction of muscle. The objective of this review is to analyze the current understanding of the pathophysiology of acute skeletal muscle wasting and to describe the ultrasonographic features of normal muscle and muscle weakness.
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Affiliation(s)
- Michele Umbrello
- Department Intensive Care and Anesthesia, ASST Ovest Milanese, Ospedale Nuovo di Legnano, 20025 Legnano, Italy
| | - Etrusca Brogi
- Department Anaesthesia and Intensive Care, University of Pisa, 56126 Pisa, Italy
| | - Paolo Formenti
- Departement of Anesthesia and Intensive Care, ASST Nord Milano, Ospedale E Bassini, 20092 Cinisello Balsamo, Italy
| | - Francesco Corradi
- Department Anaesthesia and Intensive Care, University of Pisa, 56126 Pisa, Italy
| | - Francesco Forfori
- Department Anaesthesia and Intensive Care, University of Pisa, 56126 Pisa, Italy
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Puri S, Magoon R, Bandyopadhyay A. Comment on: "Predictive factors and clinical impact of ICU-acquired weakness on functional disability in mechanically ventilated patients with COVID-19″. Heart Lung 2023; 62:280. [PMID: 37085437 PMCID: PMC10083201 DOI: 10.1016/j.hrtlng.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 04/06/2023] [Accepted: 04/07/2023] [Indexed: 04/23/2023]
Affiliation(s)
- Sunaakshi Puri
- Senior Resident, Department of Anesthesia, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh 160012, India
| | - Rohan Magoon
- Assistant Professor, Department of Anaesthesia, Atal Bihari Vajpayee Institute of Medical Sciences (ABVIMS) and Dr. Ram Manohar Lohia Hospital, Baba Kharak Singh Marg, New Delhi 110001, India
| | - Anjishnujit Bandyopadhyay
- Assistant Professor, Department of Anaesthesiology, Pain Medicine and Critical Care, Jai Prakash Narayan Apex Trauma Center (JPNATC), All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India.
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Chaillou T, Montiel-Rojas D. Does the blunted stimulation of skeletal muscle protein synthesis by aging in response to mechanical load result from impaired ribosome biogenesis? FRONTIERS IN AGING 2023; 4:1171850. [PMID: 37256189 PMCID: PMC10225510 DOI: 10.3389/fragi.2023.1171850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 05/04/2023] [Indexed: 06/01/2023]
Abstract
Age-related loss of skeletal muscle mass leads to a reduction of strength. It is likely due to an inadequate stimulation of muscle protein synthesis (MPS) in response to anabolic stimuli, such as mechanical load. Ribosome biogenesis is a major determinant of translational capacity and is essential for the control of muscle mass. This mini-review aims to put forth the hypothesis that ribosome biogenesis is impaired by aging in response to mechanical load, which could contribute to the age-related anabolic resistance and progressive muscle atrophy. Recent animal studies indicate that aging impedes muscle hypertrophic response to mechanical overload. This is associated with an impaired transcription of ribosomal DNA (rDNA) by RNA polymerase I (Pol I), a limited increase in total RNA concentration, a blunted activation of AKT/mTOR pathway, and an increased phosphorylation of AMPK. In contrast, an age-mediated impairment of ribosome biogenesis is unlikely in response to electrical stimulations. In human, the hypertrophic response to resistance exercise training is diminished with age. This is accompanied by a deficit in long-term MPS and an absence of increased total RNA concentration. The results addressing the acute response to resistance exercise suggest an impaired Pol I-mediated rDNA transcription and attenuated activation/expression of several upstream regulators of ribosome biogenesis in muscles from aged individuals. Altogether, emerging evidence indicates that impaired ribosome biogenesis could partly explain age-related anabolic resistance to mechanical load, which may ultimately contribute to progressive muscle atrophy. Future research should develop more advanced molecular tools to provide in-depth analysis of muscle ribosome biogenesis.
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Mendelson AA, Erickson D, Villar R. The role of the microcirculation and integrative cardiovascular physiology in the pathogenesis of ICU-acquired weakness. Front Physiol 2023; 14:1170429. [PMID: 37234410 PMCID: PMC10206327 DOI: 10.3389/fphys.2023.1170429] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
Skeletal muscle dysfunction after critical illness, defined as ICU-acquired weakness (ICU-AW), is a complex and multifactorial syndrome that contributes significantly to long-term morbidity and reduced quality of life for ICU survivors and caregivers. Historically, research in this field has focused on pathological changes within the muscle itself, without much consideration for their in vivo physiological environment. Skeletal muscle has the widest range of oxygen metabolism of any organ, and regulation of oxygen supply with tissue demand is a fundamental requirement for locomotion and muscle function. During exercise, this process is exquisitely controlled and coordinated by the cardiovascular, respiratory, and autonomic systems, and also within the skeletal muscle microcirculation and mitochondria as the terminal site of oxygen exchange and utilization. This review highlights the potential contribution of the microcirculation and integrative cardiovascular physiology to the pathogenesis of ICU-AW. An overview of skeletal muscle microvascular structure and function is provided, as well as our understanding of microvascular dysfunction during the acute phase of critical illness; whether microvascular dysfunction persists after ICU discharge is currently not known. Molecular mechanisms that regulate crosstalk between endothelial cells and myocytes are discussed, including the role of the microcirculation in skeletal muscle atrophy, oxidative stress, and satellite cell biology. The concept of integrated control of oxygen delivery and utilization during exercise is introduced, with evidence of physiological dysfunction throughout the oxygen delivery pathway - from mouth to mitochondria - causing reduced exercise capacity in patients with chronic disease (e.g., heart failure, COPD). We suggest that objective and perceived weakness after critical illness represents a physiological failure of oxygen supply-demand matching - both globally throughout the body and locally within skeletal muscle. Lastly, we highlight the value of standardized cardiopulmonary exercise testing protocols for evaluating fitness in ICU survivors, and the application of near-infrared spectroscopy for directly measuring skeletal muscle oxygenation, representing potential advancements in ICU-AW research and rehabilitation.
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Affiliation(s)
- Asher A. Mendelson
- Section of Critical Care Medicine, Department of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Dustin Erickson
- Section of Critical Care Medicine, Department of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Rodrigo Villar
- Faculty of Kinesiology and Recreation Management, University of Manitoba, Winnipeg, MB, Canada
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11
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dos Santos AAC, Rodrigues LE, Alecrim-Zeza AL, de Araújo Ferreira L, Trettel CDS, Gimenes GM, da Silva AF, Sousa-Filho CPB, Serdan TDA, Levada-Pires AC, Hatanaka E, Borges FT, de Barros MP, Cury-Boaventura MF, Bertolini GL, Cassolla P, Marzuca-Nassr GN, Vitzel KF, Pithon-Curi TC, Masi LN, Curi R, Gorjao R, Hirabara SM. Molecular and cellular mechanisms involved in tissue-specific metabolic modulation by SARS-CoV-2. Front Microbiol 2022; 13:1037467. [PMID: 36439786 PMCID: PMC9684198 DOI: 10.3389/fmicb.2022.1037467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 10/26/2022] [Indexed: 09/09/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) is triggered by the SARS-CoV-2, which is able to infect and cause dysfunction not only in lungs, but also in multiple organs, including central nervous system, skeletal muscle, kidneys, heart, liver, and intestine. Several metabolic disturbances are associated with cell damage or tissue injury, but the mechanisms involved are not yet fully elucidated. Some potential mechanisms involved in the COVID-19-induced tissue dysfunction are proposed, such as: (a) High expression and levels of proinflammatory cytokines, including TNF-α IL-6, IL-1β, INF-α and INF-β, increasing the systemic and tissue inflammatory state; (b) Induction of oxidative stress due to redox imbalance, resulting in cell injury or death induced by elevated production of reactive oxygen species; and (c) Deregulation of the renin-angiotensin-aldosterone system, exacerbating the inflammatory and oxidative stress responses. In this review, we discuss the main metabolic disturbances observed in different target tissues of SARS-CoV-2 and the potential mechanisms involved in these changes associated with the tissue dysfunction.
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Affiliation(s)
| | - Luiz Eduardo Rodrigues
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Amanda Lins Alecrim-Zeza
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Liliane de Araújo Ferreira
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Caio dos Santos Trettel
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Gabriela Mandú Gimenes
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Adelson Fernandes da Silva
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | | | - Tamires Duarte Afonso Serdan
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
- Department of Molecular Pathobiology, University of New York, New York, NY, United States
| | - Adriana Cristina Levada-Pires
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Elaine Hatanaka
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Fernanda Teixeira Borges
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
- Divisão de Nefrologia, Departamento de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Marcelo Paes de Barros
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Maria Fernanda Cury-Boaventura
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Gisele Lopes Bertolini
- Department of Physiological Sciences, Biological Science Center, State University of Londrina, Londrina, PR, Brazil
| | - Priscila Cassolla
- Department of Physiological Sciences, Biological Science Center, State University of Londrina, Londrina, PR, Brazil
| | | | - Kaio Fernando Vitzel
- School of Health Sciences, College of Health, Massey University, Auckland, New Zealand
| | - Tania Cristina Pithon-Curi
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Laureane Nunes Masi
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Rui Curi
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
- Instituto Butantan, São Paulo, Brazil
| | - Renata Gorjao
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
| | - Sandro Massao Hirabara
- Programa de Pós-graduação Interdisciplinar em Ciências da Saúde, Universidade Cruzeiro do Sul, São Paulo, São Paulo, Brazil
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