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Hoenigsperger H, Sivarajan R, Sparrer KM. Differences and similarities between innate immune evasion strategies of human coronaviruses. Curr Opin Microbiol 2024; 79:102466. [PMID: 38555743 DOI: 10.1016/j.mib.2024.102466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/20/2024] [Accepted: 03/12/2024] [Indexed: 04/02/2024]
Abstract
So far, seven coronaviruses have emerged in humans. Four recurring endemic coronaviruses cause mild respiratory symptoms. Infections with epidemic Middle East respiratory syndrome-related coronavirus or severe acute respiratory syndrome coronavirus (SARS-CoV)-1 are associated with high mortality rates. SARS-CoV-2 is the causative agent of the coronavirus disease 2019 pandemic. To establish an infection, coronaviruses evade restriction by human innate immune defenses, such as the interferon system, autophagy and the inflammasome. Here, we review similar and distinct innate immune manipulation strategies employed by the seven human coronaviruses. We further discuss the impact on pathogenesis, zoonotic emergence and adaptation. Understanding the nature of the interplay between endemic/epidemic/pandemic coronaviruses and host defenses may help to better assess the pandemic potential of emerging coronaviruses.
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Affiliation(s)
- Helene Hoenigsperger
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany
| | - Rinu Sivarajan
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany
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2
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Dulfer EA, Joosten LAB, Netea MG. Enduring echoes: Post-infectious long-term changes in innate immunity. Eur J Intern Med 2024; 123:15-22. [PMID: 38135583 DOI: 10.1016/j.ejim.2023.12.020] [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: 11/11/2023] [Revised: 12/16/2023] [Accepted: 12/19/2023] [Indexed: 12/24/2023]
Abstract
Upon encountering pathogens, the immune system typically responds by initiating an acute and self-limiting reaction, with symptoms subsiding after the pathogen has been cleared. However, long-term post-infectious clinical symptoms can manifest months or even years after the initial infection. 'Trained immunity', the functional reprogramming of innate immune cells through epigenetic and metabolic rewiring, has been proposed as a key concept for understanding these long-term effects. Although trained immunity can result in enhanced protection against reinfection with heterologous pathogens, it can also contribute to detrimental outcomes. Persisting and excessive inflammation can cause tissue damage and aggravate immune-mediated conditions and cardiovascular complications. On the other hand, suppression of immune cell effector functions by long-lasting epigenetic changes can result in post-infectious immune paralysis. Distinct stimuli can evoke different trained immunity programs, potentially resulting in different consequences for the host. In this review, we provide an overview of both the adaptive and maladaptive consequences of infectious diseases. We discuss how long-term immune dysregulation in patients can be addressed by tailoring host-directed interventions and identify areas of scientific and therapeutic potential to advance further.
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Affiliation(s)
- Elisabeth A Dulfer
- Department of Internal Medicine, Radboud Center for Infectious Diseases, Radboud university medical center, Nijmegen, the Netherlands.
| | - Leo A B Joosten
- Department of Internal Medicine, Radboud Center for Infectious Diseases, Radboud university medical center, Nijmegen, the Netherlands; Department of Medical Genetics, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Mihai G Netea
- Department of Internal Medicine, Radboud Center for Infectious Diseases, Radboud university medical center, Nijmegen, the Netherlands; Department for Immunology and Metabolism, Life and Medical Sciences Institute (LIMES), University of Bonn, Germany
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3
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Lei H. Quantitative and Longitudinal Assessment of Systemic Innate Immunity in Health and Disease Using a 2D Gene Model. Biomedicines 2024; 12:969. [PMID: 38790931 PMCID: PMC11117654 DOI: 10.3390/biomedicines12050969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/22/2024] [Accepted: 04/24/2024] [Indexed: 05/26/2024] Open
Abstract
Dysregulation of innate immunity is deeply involved in infectious and autoimmune diseases. For a better understanding of pathogenesis and improved management of these diseases, it is of vital importance to implement convenient monitoring of systemic innate immunity. Built upon our previous works on the host transcriptional response to infection in peripheral blood, we proposed a 2D gene model for the simultaneous assessment of two major components of systemic innate immunity, including VirSig as the signature of the host response to viral infection and BacSig as the signature of the host response to bacterial infection. The revelation of dysregulation in innate immunity by this 2D gene model was demonstrated with a wide variety of transcriptome datasets. In acute infection, distinctive patterns of VirSig and BacSig activation were observed in viral and bacterial infection. In comparison, both signatures were restricted to a defined range in the vast majority of healthy adults, regardless of age. In addition, BacSig showed significant elevation during pregnancy and an upward trend during development. In tuberculosis (TB), elevation of BacSig and VirSig was observed in a significant portion of active TB patients, and abnormal BacSig was also associated with a longer treatment course. In cystic fibrosis (CF), abnormal BacSig was observed in a subset of patients, and no overall change in BacSig abnormality was observed after the drug treatment. In systemic sclerosis-associated interstitial lung disease (SSc-ILD), significant elevation of VirSig and BacSig was observed in some patients, and treatment with a drug led to the further deviation of BacSig from the control level. In systemic lupus erythematosus (SLE), positivity for the anti-Ro autoantibody was associated with significant elevation of VirSig in SLE patients, and the additive effect of VirSig/BacSig activation was also observed in SLE patients during pregnancy. Overall, these data demonstrated that the 2D gene model can be used to assess systemic innate immunity in health and disease, with the potential clinical applications including patient stratification, prescription of antibiotics, understanding of pathogenesis, and longitudinal monitoring of treatment response.
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Affiliation(s)
- Hongxing Lei
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, and China National Center for Bioinformation, Beijing 100101, China; ; Tel.: +86-010-8409-7276
- Cunji Medical School, University of Chinese Academy of Sciences, Beijing 101408, China
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Izquierdo-Condoy JS, Vásconez-Gonzáles J, Morales-Lapo E, Tello-De-la-Torre A, Naranjo-Lara P, Fernández R, Hidalgo MR, Escobar A, Yépez VH, Díaz AM, Oliva C, Ortiz-Prado E. Beyond the acute phase: a comprehensive literature review of long-term sequelae resulting from infectious diseases. Front Cell Infect Microbiol 2024; 14:1293782. [PMID: 38357446 PMCID: PMC10864624 DOI: 10.3389/fcimb.2024.1293782] [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: 09/13/2023] [Accepted: 01/16/2024] [Indexed: 02/16/2024] Open
Abstract
Infectious diseases have consistently served as pivotal influences on numerous civilizations, inducing morbidity, mortality, and consequently redirecting the course of history. Their impact extends far beyond the acute phase, characterized by the majority of symptom presentations, to a multitude of adverse events and sequelae that follow viral, parasitic, fungal, or bacterial infections. In this context, myriad sequelae related to various infectious diseases have been identified, spanning short to long-term durations. Although these sequelae are known to affect thousands of individuals individually, a comprehensive evaluation of all potential long-term effects of infectious diseases has yet to be undertaken. We present a comprehensive literature review delineating the primary sequelae attributable to major infectious diseases, categorized by systems, symptoms, and duration. This compilation serves as a crucial resource, illuminating the long-term ramifications of infectious diseases for healthcare professionals worldwide. Moreover, this review highlights the substantial burden that these sequelae impose on global health and economies, a facet often overshadowed by the predominant focus on the acute phase. Patients are frequently discharged following the resolution of the acute phase, with minimal long-term follow-up to comprehend and address potential sequelae. This emphasizes the pressing need for sustained vigilance, thorough patient monitoring, strategic health management, and rigorous research to understand and mitigate the lasting economic and health impacts of infectious diseases more fully.
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Vivaldi G, Pfeffer PE, Talaei M, Basera TJ, Shaheen SO, Martineau AR. Long-term symptom profiles after COVID-19 vs other acute respiratory infections: an analysis of data from the COVIDENCE UK study. EClinicalMedicine 2023; 65:102251. [PMID: 38106559 PMCID: PMC10721552 DOI: 10.1016/j.eclinm.2023.102251] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/04/2023] [Accepted: 09/15/2023] [Indexed: 12/19/2023] Open
Abstract
Background Long COVID is a well recognised, if heterogeneous, entity. Acute respiratory infections (ARIs) due to other pathogens may cause long-term symptoms, but few studies compare post-acute sequelae between SARS-CoV-2 and other ARIs. We aimed to compare symptom profiles between people with previous SARS-CoV-2 infection, people with previous non-COVID-19 ARIs, and contemporaneous controls, and to identify clusters of long-term symptoms. Methods COVIDENCE UK is a prospective, population-based UK study of ARIs in adults. We analysed data for 16 potential long COVID symptoms and health-related quality of life (HRQoL), reported between January 21 and February 15, 2021, by participants unvaccinated against SARS-CoV-2. We classified participants as having previous SARS-CoV-2 infection or previous non-COVID-19 ARI (≥4 weeks prior) or no reported ARI. We compared symptoms by infection status using logistic and fractional regression, and identified symptom clusters using latent class analysis (LCA). This study is registered with ClinicalTrials.gov, NCT04330599. Findings We included 10,171 participants (1311 [12.9%] with SARS-CoV-2 infection, 472 [4.6%] with non-COVID-19 ARI). Both types of infection were associated with increased prevalence/severity of most symptoms and decreased HRQoL compared with no infection. Participants with SARS-CoV-2 infection had increased odds of problems with taste/smell (odds ratio 19.74, 95% CI 10.53-37.00) and lightheadedness or dizziness (1.74, 1.18-2.56) compared with participants with non-COVID-19 ARIs. Separate LCA models identified three symptom severity groups for each infection type. In the most severe groups (representing 22% of participants for both SARS-CoV-2 and non-COVID-19 ARI), SARS-CoV-2 infection presented with a higher probability of problems with taste/smell (probability 0.41 vs 0.04), hair loss (0.25 vs 0.16), unusual sweating (0.38 vs 0.25), unusual racing of the heart (0.43 vs 0.33), and memory problems (0.70 vs 0.55) than non-COVID-19 ARI. Interpretation Both SARS-CoV-2 and non-COVID-19 ARIs are associated with a wide range of symptoms more than 4 weeks after the acute infection. Research on post-acute sequelae of ARIs should extend from SARS-CoV-2 to include other pathogens. Funding Barts Charity.
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Affiliation(s)
- Giulia Vivaldi
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- Wolfson Institute of Population Health, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Paul E. Pfeffer
- Barts Health NHS Trust, London, UK
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Mohammad Talaei
- Wolfson Institute of Population Health, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Tariro Jayson Basera
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Seif O. Shaheen
- Wolfson Institute of Population Health, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Adrian R. Martineau
- Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- Wolfson Institute of Population Health, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- Asthma UK Centre for Applied Research, Queen Mary University of London, London, UK
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6
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Liu Z, Ulrich vonBargen R, Kendricks AL, Wheeler K, Leão AC, Sankaranarayanan K, Dean DA, Kane SS, Hossain E, Pollet J, Bottazzi ME, Hotez PJ, Jones KM, McCall LI. Localized cardiac small molecule trajectories and persistent chemical sequelae in experimental Chagas disease. Nat Commun 2023; 14:6769. [PMID: 37880260 PMCID: PMC10600178 DOI: 10.1038/s41467-023-42247-w] [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: 01/19/2023] [Accepted: 10/04/2023] [Indexed: 10/27/2023] Open
Abstract
Post-infectious conditions present major health burdens but remain poorly understood. In Chagas disease (CD), caused by Trypanosoma cruzi parasites, antiparasitic agents that successfully clear T. cruzi do not always improve clinical outcomes. In this study, we reveal differential small molecule trajectories between cardiac regions during chronic T. cruzi infection, matching with characteristic CD apical aneurysm sites. Incomplete, region-specific, cardiac small molecule restoration is observed in animals treated with the antiparasitic benznidazole. In contrast, superior restoration of the cardiac small molecule profile is observed for a combination treatment of reduced-dose benznidazole plus an immunotherapy, even with less parasite burden reduction. Overall, these results reveal molecular mechanisms of CD treatment based on simultaneous effects on the pathogen and on host small molecule responses, and expand our understanding of clinical treatment failure in CD. This link between infection and subsequent persistent small molecule perturbation broadens our understanding of infectious disease sequelae.
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Affiliation(s)
- Zongyuan Liu
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
- Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma, Norman, OK, USA
| | - Rebecca Ulrich vonBargen
- Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma, Norman, OK, USA
- Department of Biomedical Engineering, University of Oklahoma, Norman, OK, USA
| | | | - Kate Wheeler
- Department of Biology, University of Oklahoma, Norman, OK, USA
| | - Ana Carolina Leão
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Krithivasan Sankaranarayanan
- Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma, Norman, OK, USA
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, USA
| | - Danya A Dean
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
- Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma, Norman, OK, USA
| | - Shelley S Kane
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
- Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma, Norman, OK, USA
| | - Ekram Hossain
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
- Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma, Norman, OK, USA
| | - Jeroen Pollet
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Maria Elena Bottazzi
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Peter J Hotez
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Kathryn M Jones
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA.
| | - Laura-Isobel McCall
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA.
- Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma, Norman, OK, USA.
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, USA.
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA, USA.
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7
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Buonsenso D, Martino L, Morello R, Mariani F, Fearnley K, Valentini P. Viral persistence in children infected with SARS-CoV-2: current evidence and future research strategies. THE LANCET. MICROBE 2023; 4:e745-e756. [PMID: 37385286 PMCID: PMC10292824 DOI: 10.1016/s2666-5247(23)00115-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/30/2023] [Accepted: 04/04/2023] [Indexed: 07/01/2023]
Abstract
In this Personal View, we discuss current knowledge on SARS-CoV-2 RNA or antigen persistence in children infected with SARS-CoV-2. Based on the evidence that the virus can persist in adults, we have done a literature review and analysed studies that looked for SARS-CoV-2 RNA or antigens in children undergoing autopsy, biopsy, or surgery for either death from COVID-19 or multisystem inflammatory syndrome, or assessments for long COVID-19 or other conditions. Our analysis suggests that in children, independent from disease severity, SARS-CoV-2 can spread systemically and persist for weeks to months. We discuss what is known about the biological effects of viral persistence for other viral infections and highlight new scenarios for clinical, pharmacological, and basic research exploration. Such an approach will improve the understanding and management of post-viral syndromes.
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Affiliation(s)
- Danilo Buonsenso
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy; Centro di Salute Globale, Università Cattolica del Sacro Cuore, Rome, Italy.
| | - Laura Martino
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Rosa Morello
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Francesco Mariani
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | | | - Piero Valentini
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
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Spengler JR, Welch SR, Ritter JM, Harmon JR, Coleman-McCray JD, Genzer SC, Seixas JN, Scholte FEM, Davies KA, Bradfute SB, Montgomery JM, Spiropoulou CF. Mouse models of Ebola virus tolerance and lethality: characterization of CD-1 mice infected with wild-type, guinea pig-adapted, or mouse-adapted virus. Antiviral Res 2023; 210:105496. [PMID: 36567020 DOI: 10.1016/j.antiviral.2022.105496] [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: 11/30/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022]
Abstract
Development of lethal models of Ebola virus disease has been achieved by the serial passage of virus isolates from human cases in mice and guinea pigs. Use of mice infected with non-adapted virus has been limited due to the absence of overt clinical disease. In recent years, newly recognized sequelae identified in human cases has highlighted the importance of continued investigations of non-lethal infection both in humans and animal models. Here, we revisit the use of rodent-adapted and non-adapted Ebola virus (EBOV) in mice to investigate infection tolerance and future utility of these models in pathogenesis and therapeutic intervention studies. We found that like non-adapted wild-type EBOV, guinea pig-adapted EBOV resulted in widespread tissue infection, variably associated with tissue pathology, and alterations in clinical and immunological analytes in the absence of overt disease. Notably, infection with either non-lethal variant did not greatly differ from lethal mouse-adapted EBOV until near the time end-point criteria are reached in these mice. These data support future investigations of pathogenesis, convalescence, and sequelae in mouse models of virus tolerance.
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Affiliation(s)
- Jessica R Spengler
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Stephen R Welch
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jana M Ritter
- Infectious Disease Pathology Branch, Division of High Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jessica R Harmon
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - JoAnn D Coleman-McCray
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Sarah C Genzer
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Josilene N Seixas
- Infectious Disease Pathology Branch, Division of High Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Florine E M Scholte
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Katherine A Davies
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Steven B Bradfute
- Center for Global Health, Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Joel M Montgomery
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Christina F Spiropoulou
- Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, GA, USA
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9
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Schwendinger F, Knaier R, Radtke T, Schmidt-Trucksäss A. Low Cardiorespiratory Fitness Post-COVID-19: A Narrative Review. Sports Med 2023; 53:51-74. [PMID: 36115933 PMCID: PMC9483283 DOI: 10.1007/s40279-022-01751-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2022] [Indexed: 01/12/2023]
Abstract
Patients recovering from COVID-19 often report symptoms of exhaustion, fatigue and dyspnoea and present with exercise intolerance persisting for months post-infection. Numerous studies investigated these sequelae and their possible underlying mechanisms using cardiopulmonary exercise testing. We aimed to provide an in-depth discussion as well as an overview of the contribution of selected organ systems to exercise intolerance based on the Wasserman gears. The gears represent the pulmonary system, cardiovascular system, and periphery/musculature and mitochondria. Thirty-two studies that examined adult patients post-COVID-19 via cardiopulmonary exercise testing were included. In 22 of 26 studies reporting cardiorespiratory fitness (herein defined as peak oxygen uptake-VO2peak), VO2peak was < 90% of predicted value in patients. VO2peak was notably below normal even in the long-term. Given the available evidence, the contribution of respiratory function to low VO2peak seems to be only minor except for lung diffusion capacity. The prevalence of low lung diffusion capacity was high in the included studies. The cardiovascular system might contribute to low VO2peak via subnormal cardiac output due to chronotropic incompetence and reduced stroke volume, especially in the first months post-infection. Chronotropic incompetence was similarly present in the moderate- and long-term follow-up. However, contrary findings exist. Peripheral factors such as muscle mass, strength and perfusion, mitochondrial function, or arteriovenous oxygen difference may also contribute to low VO2peak. More data are required, however. The findings of this review do not support deconditioning as the primary mechanism of low VO2peak post-COVID-19. Post-COVID-19 sequelae are multifaceted and require individual diagnosis and treatment.
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Affiliation(s)
- Fabian Schwendinger
- Division of Sports and Exercise Medicine, Department of Sport, Exercise and Health, University of Basel, Grosse Allee 6, 4052 Basel, Switzerland
| | - Raphael Knaier
- Division of Sleep Medicine, Harvard Medical School, Boston, MA USA
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Boston, MA USA
| | - Thomas Radtke
- Epidemiology, Biostatistics and Prevention Institute (EBPI), University of Zurich, Zurich, Switzerland
| | - Arno Schmidt-Trucksäss
- Division of Sports and Exercise Medicine, Department of Sport, Exercise and Health, University of Basel, Grosse Allee 6, 4052 Basel, Switzerland
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10
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Bellan M, Apostolo D, Albè A, Crevola M, Errica N, Ratano G, Tonello S, Minisini R, D’Onghia D, Baricich A, Patrucco F, Zeppegno P, Gramaglia C, Balbo PE, Cappellano G, Casella S, Chiocchetti A, Clivati E, Giordano M, Manfredi M, Patti G, Pinato DJ, Puricelli C, Raineri D, Rolla R, Sainaghi PP, Pirisi M. Determinants of long COVID among adults hospitalized for SARS-CoV-2 infection: A prospective cohort study. Front Immunol 2022; 13:1038227. [PMID: 36601115 PMCID: PMC9807078 DOI: 10.3389/fimmu.2022.1038227] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/25/2022] [Indexed: 12/24/2022] Open
Abstract
Rationale Factors associated with long-term sequelae emerging after the acute phase of COVID-19 (so called "long COVID") are unclear. Here, we aimed to identify risk factors for the development of COVID-19 sequelae in a prospective cohort of subjects hospitalized for SARS-CoV-2 infection and followed up one year after discharge. Methods A total of 324 subjects underwent a comprehensive and multidisciplinary evaluation one year after hospital discharge for COVID-19. A subgroup of 247/324 who consented to donate a blood sample were tested for a panel of circulating cytokines. Results In 122 patients (37.8%) there was evidence of at least one persisting physical symptom. After correcting for comorbidities and COVID-19 severity, the risk of developing long COVID was lower in the 109 subjects admitted to the hospital in the third wave of the pandemic than in the 215 admitted during the first wave, (OR 0.69, 95%CI 0.51-0.93, p=0.01). Univariable analysis revealed female sex, diffusing capacity of the lungs for carbon monoxide (DLCO) value, body mass index, anxiety and depressive symptoms to be positively associated with COVID-19 sequelae at 1 year. Following logistic regression analysis, DLCO was the only independent predictor of residual symptoms (OR 0.98 CI 95% (0.96-0.99), p=0.01). In the subgroup of subjects with normal DLCO (> 80%), for whom residual lung damage was an unlikely explanation for long COVID, the presence of anxiety and depressive symptoms was significantly associated to persistent symptoms, together with increased levels of a set of pro-inflammatory cytokines: interferon-gamma, tumor necrosis factor-alpha, interleukin (IL)-2, IL-12, IL-1β, IL-17. In logistic regression analysis, depressive symptoms (p=0.02, OR 4.57 [1.21-17.21]) and IL-12 levels (p=0.03, OR 1.06 [1.00-1.11]) 1-year after hospital discharge were independently associated with persistence of symptoms. Conclusions Long COVID appears mainly related to respiratory sequelae, prevalently observed during the first pandemic wave. Among patients with little or no residual lung damage, a cytokine pattern consistent with systemic inflammation is in place.
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Affiliation(s)
- Mattia Bellan
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy,*Correspondence: Mattia Bellan,
| | | | - Alice Albè
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | - Martina Crevola
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | - Nicolò Errica
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | - Giacomo Ratano
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | | | | | | | - Alessio Baricich
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | - Filippo Patrucco
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | - Patrizia Zeppegno
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | - Carla Gramaglia
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | | | | | - Sara Casella
- Università del Piemonte Orientale (UPO), Novara, Italy
| | | | | | - Mara Giordano
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | | | - Giuseppe Patti
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | - David James Pinato
- Università del Piemonte Orientale (UPO), Novara, Italy,Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital, London, United Kingdom
| | - Chiara Puricelli
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | | | - Roberta Rolla
- Università del Piemonte Orientale (UPO), Novara, Italy
| | - Pier Paolo Sainaghi
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
| | - Mario Pirisi
- Università del Piemonte Orientale (UPO), Novara, Italy,”AOU Maggiore della Carità”, Novara, Italy
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11
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Li Z, Chen X, Dan J, Hu T, Hu Y, Liu S, Chai Y, Shi Y, Wu J, Ni H, Zhu J, Wu Y, Li N, Yu Y, Wang Z, Zhao J, Zhong N, Ren X, Shen Z, Cao X. Innate immune imprints in SARS-CoV-2 Omicron variant infection convalescents. Signal Transduct Target Ther 2022; 7:377. [PMID: 36379915 PMCID: PMC9666472 DOI: 10.1038/s41392-022-01237-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 11/17/2022] Open
Abstract
SARS-CoV-2 Omicron variant infection generally gives rise to asymptomatic to moderate COVID-19 in vaccinated people. The immune cells can be reprogrammed or "imprinted" by vaccination and infections to generate protective immunity against subsequent challenges. Considering the immune imprint in Omicron infection is unclear, here we delineate the innate immune landscape of human Omicron infection via single-cell RNA sequencing, surface proteome profiling, and plasma cytokine quantification. We found that monocyte responses predominated in immune imprints of Omicron convalescents, with IL-1β-associated and interferon (IFN)-responsive signatures with mild and moderate symptoms, respectively. Low-density neutrophils increased and exhibited IL-1β-associated and IFN-responsive signatures similarly. Mild convalescents had increased blood IL-1β, CCL4, IL-9 levels and PI3+ neutrophils, indicating a bias to IL-1β responsiveness, while moderate convalescents had increased blood CXCL10 and IFN-responsive monocytes, suggesting durative IFN responses. Therefore, IL-1β- or IFN-responsiveness of myeloid cells may indicate the disease severity of Omicron infection and mediate post-COVID conditions.
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Affiliation(s)
- Zhiqing Li
- grid.73113.370000 0004 0369 1660National Key Laboratory of Medical Immunology, Institute of Immunology, Naval Medical University, Shanghai, 200433 China
| | - Xiaosu Chen
- grid.216938.70000 0000 9878 7032Frontier Research Center for Cell Response, Institute of Immunology, College of Life Sciences, Nankai University, Tianjin, 300071 China
| | - Junyan Dan
- grid.73113.370000 0004 0369 1660National Key Laboratory of Medical Immunology, Institute of Immunology, Naval Medical University, Shanghai, 200433 China
| | - Tianju Hu
- grid.506261.60000 0001 0706 7839Department of Immunology, Institute of Basic Medical Research, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100005 China
| | - Ye Hu
- grid.216938.70000 0000 9878 7032Frontier Research Center for Cell Response, Institute of Immunology, College of Life Sciences, Nankai University, Tianjin, 300071 China
| | - Shuxun Liu
- grid.73113.370000 0004 0369 1660National Key Laboratory of Medical Immunology, Institute of Immunology, Naval Medical University, Shanghai, 200433 China
| | - Yangyang Chai
- grid.506261.60000 0001 0706 7839Department of Immunology, Institute of Basic Medical Research, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100005 China
| | - Yansong Shi
- grid.216938.70000 0000 9878 7032Frontier Research Center for Cell Response, Institute of Immunology, College of Life Sciences, Nankai University, Tianjin, 300071 China
| | - Jian Wu
- grid.73113.370000 0004 0369 1660National Key Laboratory of Medical Immunology, Institute of Immunology, Naval Medical University, Shanghai, 200433 China
| | - Hailai Ni
- grid.411525.60000 0004 0369 1599The Health Care Department, Shanghai Changhai Hospital, Shanghai, 200433 China
| | - Jiaqi Zhu
- grid.411525.60000 0004 0369 1599Department of Cardiology, Shanghai Changhai Hospital, Shanghai, 200433 China
| | - Yanfeng Wu
- grid.73113.370000 0004 0369 1660National Key Laboratory of Medical Immunology, Institute of Immunology, Naval Medical University, Shanghai, 200433 China
| | - Nan Li
- grid.73113.370000 0004 0369 1660National Key Laboratory of Medical Immunology, Institute of Immunology, Naval Medical University, Shanghai, 200433 China
| | - Yizhi Yu
- grid.73113.370000 0004 0369 1660National Key Laboratory of Medical Immunology, Institute of Immunology, Naval Medical University, Shanghai, 200433 China
| | | | - Jincun Zhao
- Guangzhou Laboratory, Guangzhou, 510300 China
| | | | | | - Zhongyang Shen
- grid.216938.70000 0000 9878 7032Organ Transplant Center, Tianjin First Central Hospital, Nankai University, Tianjin, 300192 China
| | - Xuetao Cao
- grid.73113.370000 0004 0369 1660National Key Laboratory of Medical Immunology, Institute of Immunology, Naval Medical University, Shanghai, 200433 China ,grid.216938.70000 0000 9878 7032Frontier Research Center for Cell Response, Institute of Immunology, College of Life Sciences, Nankai University, Tianjin, 300071 China ,grid.506261.60000 0001 0706 7839Department of Immunology, Institute of Basic Medical Research, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100005 China
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12
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Robineau O, Zins M, Touvier M, Wiernik E, Lemogne C, de Lamballerie X, Blanché H, Deleuze JF, Saba Villarroel PM, Dorival C, Nicol J, Gomes-Rima R, Correia E, Coeuret-Pellicer M, Druesne-Pecollo N, Esseddik Y, Ribet C, Goldberg M, Severi G, Carrat F. Long-lasting Symptoms After an Acute COVID-19 Infection and Factors Associated With Their Resolution. JAMA Netw Open 2022; 5:e2240985. [PMID: 36350653 PMCID: PMC9647489 DOI: 10.1001/jamanetworkopen.2022.40985] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
IMPORTANCE Persistent symptoms after SARS-CoV-2 infection are an emerging public health problem. The duration of these symptoms remains poorly documented. OBJECTIVE To describe the temporal dynamics of persistent symptoms after SARS-CoV-2 infection and the factors associated with their resolution. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study involved 53 047 participants from 3 French adult population-based cohorts (CONSTANCES [Consultants des Centres d'Examens de Santé], E3N/E4N, and Nutrinet-Santé) who were included in a nationwide survey about SARS-CoV-2 infection. All participants were asked to complete self-administered questionnaires between April 1 and June 30, 2020. Variables included sociodemographic characteristics, comorbid conditions, COVID-19 diagnosis, and acute symptoms. Blood samples were obtained for serologic analysis between May 1 and November 30, 2020, from patients with SARS-CoV-2 infection defined as enzyme-linked immunosorbent assay immunoglobulin G antispike detection confirmed with a neutralization assay. A follow-up internet questionnaire was completed between June 1 and September 30, 2021, with details on persistent symptoms, their duration, and SARS-CoV-2 infection diagnosis by polymerase chain reaction. MAIN OUTCOMES AND MEASURES Persistent symptoms were defined as symptoms occurring during the acute infection and lasting 2 or more months. Survival models for interval-censored data were used to estimate symptom duration from the acute episode. Multivariable adjusted hazard ratios (HRs) were estimated for age, sex, and comorbid conditions. Factors associated with the resolution of symptoms were assessed. RESULTS A total of 3972 participants (2531 women [63.7%; 95% CI, 62.2%-65.2%]; mean [SD] age, 50.9 [12.7] years) had been infected with SARS-CoV-2. Of these 3972 participants, 2647 (66.6% [95% CI, 65.1%-68.1%]) reported at least 1 symptom during the acute phase. Of these 2647 participants, 861 (32.5% [95% CI, 30.8%-34.3%]) reported at least 1 persistent symptom lasting 2 or more months after the acute phase. After 1 year of follow-up, the estimated proportion of individuals with complete symptom resolution was 89.9% (95% CI, 88.7%-90.9%) with acute symptoms. Older age (>60 years; HR, 0.78; 95% CI, 0.68-0.90), female sex (HR, 0.64; 95% CI, 0.58-0.70), history of cancer (HR, 0.61; 95% CI, 0.47-0.79), history of tobacco consumption (HR, 0.80; 95% CI, 0.73-0.88), high body mass index (≥30: HR, 0.75; 95% CI, 0.63-0.89), and high number of symptoms during the acute phase (>4; HR, 0.43; 95% CI, 0.39-0.48) were associated with a slower resolution of symptoms. CONCLUSIONS AND RELEVANCE In this cross-sectional study, persistent symptoms were still present in 10.1% of infected individuals at 1 year after SARS-CoV-2 infection. Given the high level of cumulative incidence of COVID-19, the absolute prevalent number of people with persistent symptoms is a public health concern.
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Affiliation(s)
- Olivier Robineau
- Sorbonne Université, Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Pierre-Louis d’Epidémiologie et de Santé Publique, Paris, France
- EA2694, Univ Lille, Centre Hospitalier de Tourcoing, Tourcoing, France
| | - Marie Zins
- Population-Based Epidemiological Cohorts, UMS 11, Paris-Saclay University, Versailles St Quentin University, Université de Paris, INSERM, Villejuif, France
| | - Mathilde Touvier
- Sorbonne Paris Nord University, INSERM U1153, Inrae U1125, Conservatoire National des Arts et Metiers, Nutritional Epidemiology Research Team, Epidemiology and Statistics Research Center–University of Paris, Bobigny, France
| | - Emmanuel Wiernik
- Population-Based Epidemiological Cohorts, UMS 11, Paris-Saclay University, Versailles St Quentin University, Université de Paris, INSERM, Villejuif, France
| | - Cedric Lemogne
- Université de Paris, INSERM U1266, Institut de Psychiatrie et Neurosciences de Paris, Paris, France
| | - Xavier de Lamballerie
- Unité des Virus Emergents, UVE: Aix Marseille University, IRD 190, INSERM 1207, Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France
| | - Hélène Blanché
- Fondation Jean Dausset–CEPH (Centre d’Etude du Polymorphisme Humain), Paris, France
| | | | - Paola Mariela Saba Villarroel
- Unité des Virus Emergents, UVE: Aix Marseille University, IRD 190, INSERM 1207, Institut Hospitalo-Universitaire Méditerranée Infection, Marseille, France
| | - Céline Dorival
- Sorbonne Université, Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Pierre-Louis d’Epidémiologie et de Santé Publique, Paris, France
| | - Jerome Nicol
- Sorbonne Université, Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Pierre-Louis d’Epidémiologie et de Santé Publique, Paris, France
| | - Roselyn Gomes-Rima
- Centre de recherche Epidémiologique en Santé des Populations UMR1018, Paris-Saclay University, Université de Versailles Saint-Quentin, INSERM, Gustave Roussy, Villejuif, France
| | - Emmanuelle Correia
- Centre de recherche Epidémiologique en Santé des Populations UMR1018, Paris-Saclay University, Université de Versailles Saint-Quentin, INSERM, Gustave Roussy, Villejuif, France
| | - Mireille Coeuret-Pellicer
- Population-Based Epidemiological Cohorts, UMS 11, Paris-Saclay University, Versailles St Quentin University, Université de Paris, INSERM, Villejuif, France
| | - Nathalie Druesne-Pecollo
- Sorbonne Paris Nord University, INSERM U1153, Inrae U1125, Conservatoire National des Arts et Metiers, Nutritional Epidemiology Research Team, Epidemiology and Statistics Research Center–University of Paris, Bobigny, France
| | - Younes Esseddik
- Sorbonne Paris Nord University, INSERM U1153, Inrae U1125, Conservatoire National des Arts et Metiers, Nutritional Epidemiology Research Team, Epidemiology and Statistics Research Center–University of Paris, Bobigny, France
| | - Céline Ribet
- Population-Based Epidemiological Cohorts, UMS 11, Paris-Saclay University, Versailles St Quentin University, Université de Paris, INSERM, Villejuif, France
| | - Marcel Goldberg
- Population-Based Epidemiological Cohorts, UMS 11, Paris-Saclay University, Versailles St Quentin University, Université de Paris, INSERM, Villejuif, France
| | - Gianluca Severi
- Centre de recherche Epidémiologique en Santé des Populations UMR1018, Paris-Saclay University, Université de Versailles Saint-Quentin, INSERM, Gustave Roussy, Villejuif, France
- Department of Statistics, Computer Science, Applications “G. Parenti,” University of Florence, Florence, Italy
| | - Fabrice Carrat
- Sorbonne Université, Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Pierre-Louis d’Epidémiologie et de Santé Publique, Paris, France
- Département de santé publique, Hôpital Saint-Antoine, Assistance Publique Hôpitaux de Paris, Paris, France
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13
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Haunhorst S, Bloch W, Wagner H, Ellert C, Krüger K, Vilser DC, Finke K, Reuken P, Pletz MW, Stallmach A, Puta C. Long COVID: a narrative review of the clinical aftermaths of COVID-19 with a focus on the putative pathophysiology and aspects of physical activity. OXFORD OPEN IMMUNOLOGY 2022; 3:iqac006. [PMID: 36846561 PMCID: PMC9494493 DOI: 10.1093/oxfimm/iqac006] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/30/2022] [Accepted: 09/13/2022] [Indexed: 11/14/2022] Open
Abstract
The pandemic coronavirus disease 2019 (COVID-19) can cause multi-systemic symptoms that can persist beyond the acute symptomatic phase. The post-acute sequelae of COVID-19 (PASC), also referred to as long COVID, describe the persistence of symptoms and/or long-term complications beyond 4 weeks from the onset of the acute symptoms and are estimated to affect at least 20% of the individuals infected with SARS-CoV-2 regardless of their acute disease severity. The multi-faceted clinical picture of long COVID encompasses a plethora of undulating clinical manifestations impacting various body systems such as fatigue, headache, attention disorder, hair loss and exercise intolerance. The physiological response to exercise testing is characterized by a reduced aerobic capacity, cardiocirculatory limitations, dysfunctional breathing patterns and an impaired ability to extract and use oxygen. Still, to this day, the causative pathophysiological mechanisms of long COVID remain to be elucidated, with long-term organ damage, immune system dysregulation and endotheliopathy being among the hypotheses discussed. Likewise, there is still a paucity of treatment options and evidence-based strategies for the management of the symptoms. In sum, this review explores different aspects of long COVID and maps the literature on what is known about its clinical manifestations, potential pathophysiological mechanisms, and treatment options.
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Affiliation(s)
- Simon Haunhorst
- Department of Sports Medicine and Health Promotion, Friedrich-Schiller-University Jena, Jena 07749, Germany,Department of Movement Science, University of Münster, Münster 48149, Germany
| | - Wilhelm Bloch
- Department for Molecular and Cellular Sports Medicine, Institute for Cardiovascular Research and Sports Medicine, German Sport University Cologne, Cologne 50933, Germany
| | - Heiko Wagner
- Department of Movement Science, University of Münster, Münster 48149, Germany
| | - Claudia Ellert
- Department for Vascular Surgery, Lahn-Dill Clinics Wetzlar, Wetzlar 35578, Germany
| | - Karsten Krüger
- Department of Exercise Physiology and Sports Therapy, Institute of Sports Science, Justus-Liebig-University Giessen, Giessen 35394, Germany
| | - Daniel C Vilser
- Hospital for Pediatrics and Adolescent Medicine, Jena University Hospital, Jena 07747, Germany
| | - Kathrin Finke
- Department of Neurology, Jena University Hospital, Jena 07747, Germany
| | - Philipp Reuken
- Clinic for Internal Medicine IV (Gastroenterology, Hepatology and Infectious Diseases), Jena University Hospital, Jena 07747, Germany
| | - Mathias W Pletz
- Institute for Infectious Diseases and Infection Control, Jena University Hospital, Jena 07747, Germany
| | - Andreas Stallmach
- Clinic for Internal Medicine IV (Gastroenterology, Hepatology and Infectious Diseases), Jena University Hospital, Jena 07747, Germany
| | - Christian Puta
- Correspondence address. Department for Sports Medicine and Health Promotion, Friedrich-Schiller-Universität Jena, Wöllnitzer Straße 42, Jena 07749, Germany. Tel: +49 3641 9-45607; Fax: +49 3641 9-45652; E-mail:
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14
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Shahverdi M, Masoumi J, Ghorbaninezhad F, Shajari N, Hajizadeh F, Hassanian H, Alizadeh N, Jafarlou M, Baradaran B. The modulatory role of dendritic cell-T cell cross-talk in breast cancer: Challenges and prospects. Adv Med Sci 2022; 67:353-363. [PMID: 36116207 DOI: 10.1016/j.advms.2022.09.001] [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: 05/01/2022] [Revised: 07/05/2022] [Accepted: 09/04/2022] [Indexed: 11/16/2022]
Abstract
Antigen recognition and presentation are highlighted as the first steps in developing specialized antigen responses. Dendritic cells (DCs) are outstanding professional antigen-presenting cells (APCs) responsible for priming cellular immunity in pathological states, including cancer. However, the diminished or repressed function of DCs is thought to be a substantial mechanism through which tumors escape from the immune system. In this regard, DCs obtained from breast cancer (BC) patients represent a notably weakened potency to encourage specific T-cell responses. Additionally, impaired DC-T-cell cross-talk in BC facilitates the immune evade of cancer cells and is connected with tumor advancement, immune tolerance, and adverse prognosis for patients. In this review we aim to highlight the available knowledge on DC-T-cell interactions in BC aggressiveness and show its therapeutic potential in BC treatment.
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Affiliation(s)
- Mahshid Shahverdi
- Department of Medical Biotechnology, Arak University of Medical Sciences, Arak, Iran
| | - Javad Masoumi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farid Ghorbaninezhad
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Neda Shajari
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farnaz Hajizadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamidreza Hassanian
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nazila Alizadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Jafarlou
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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15
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Kalimuddin S, Teh YE, Wee LE, Paintal S, Sasisekharan R, Low JG, Sheth SK, Ooi EE. Chronic sequelae complicate convalescence from both dengue and acute viral respiratory illness. PLoS Negl Trop Dis 2022; 16:e0010724. [PMID: 35981059 PMCID: PMC9426910 DOI: 10.1371/journal.pntd.0010724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/30/2022] [Accepted: 08/08/2022] [Indexed: 11/19/2022] Open
Abstract
Long Covid has raised awareness of the potentially disabling chronic sequelae that afflicts patients after acute viral infection. Similar syndromes of post-infectious sequelae have also been observed after other viral infections such as dengue, but their true prevalence and functional impact remain poorly defined. We prospectively enrolled 209 patients with acute dengue (n = 48; one with severe dengue) and other acute viral respiratory infections (ARI) (n = 161), and followed them up for chronic sequelae up to one year post-enrolment, prior to the onset of the Covid-19 pandemic. Baseline demographics and co-morbidities were balanced between both groups except for gender, with more males in the dengue cohort (63% vs 29%, p<0.001). Except for the first visit, data on symptoms were collected remotely using a purpose-built mobile phone application. Mental health outcomes were evaluated using the validated SF-12v2 Health Survey. Almost all patients (95.8% of dengue and 94.4% of ARI patients) experienced at least one symptom of fatigue, somnolence, headache, concentration impairment or memory impairment within the first week of enrolment. Amongst patients with at least 3-months of follow-up, 18.0% in the dengue cohort and 14.6% in the ARI cohort experienced persistent symptoms. The median month-3 SF-12v2 Mental Component Summary Score was lower in patients who remained symptomatic at 3 months and beyond, compared to those whose symptoms fully resolved (47.7 vs. 56.0, p<0.001), indicating that patients who self-reported persistence of symptoms also experienced functionally worse mental health. No statistically significant difference in age, gender distribution or hospitalisation status was observed between those with and without chronic sequelae. Our findings reveal an under-appreciated burden of post-infection chronic sequelae in dengue and ARI patients. They call for studies to define the pathophysiology of this condition, and determine the efficacy of both vaccines as well as antiviral drugs in preventing such sequelae. Chronic sequelae after viral infections such dengue have been observed, but their true prevalence and impact remain undefined. We prospectively enrolled a cohort of 209 patients with dengue and acute viral respiratory infections (ARI) and followed them up chronic sequelae for up to one year. 18% of patients in the dengue cohort and 14.6% of patients in the ARI cohort experienced chronic sequelae such as fatigue, somnolence, headache, concentration impairment and memory impairment. Patients who experienced chronic sequelae also had lower month-3 SF-12v2 Mental Component Summary Scores, suggesting that such those who self-reported persistence of symptoms experienced functionally worse mental health. Overall our findings reveal an under-appreciated burden of chronic sequelae in dengue and ARI patients and call for further studies to define the pathophysiology and potential therapeutic options for this condition.
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Affiliation(s)
- Shirin Kalimuddin
- Department of Infectious Diseases, Singapore General Hospital, Singapore
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore
- * E-mail: (S.K.); (E.E.O.)
| | - Yii Ean Teh
- Department of Infectious Diseases, Singapore General Hospital, Singapore
| | - Liang En Wee
- Department of Infectious Diseases, Singapore General Hospital, Singapore
| | | | - Ram Sasisekharan
- Antimicrobial Resistance Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, Singapore
- Department of Biological Engineering, Massachusetts Institute of Technology, Boston, Massachusetts, United States of America
| | - Jenny G. Low
- Department of Infectious Diseases, Singapore General Hospital, Singapore
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore
- Viral Research and Experimental Medicine Centre, SingHealth Duke-NUS Academic Medical Centre, Singapore
| | - Sujata K. Sheth
- Department of Emergency Medicine, Changi General Hospital, Singapore
| | - Eng Eong Ooi
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore
- Viral Research and Experimental Medicine Centre, SingHealth Duke-NUS Academic Medical Centre, Singapore
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore
- * E-mail: (S.K.); (E.E.O.)
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16
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Loh D, Reiter RJ. Melatonin: Regulation of Viral Phase Separation and Epitranscriptomics in Post-Acute Sequelae of COVID-19. Int J Mol Sci 2022; 23:8122. [PMID: 35897696 PMCID: PMC9368024 DOI: 10.3390/ijms23158122] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/09/2022] [Accepted: 07/20/2022] [Indexed: 01/27/2023] Open
Abstract
The relentless, protracted evolution of the SARS-CoV-2 virus imposes tremendous pressure on herd immunity and demands versatile adaptations by the human host genome to counter transcriptomic and epitranscriptomic alterations associated with a wide range of short- and long-term manifestations during acute infection and post-acute recovery, respectively. To promote viral replication during active infection and viral persistence, the SARS-CoV-2 envelope protein regulates host cell microenvironment including pH and ion concentrations to maintain a high oxidative environment that supports template switching, causing extensive mitochondrial damage and activation of pro-inflammatory cytokine signaling cascades. Oxidative stress and mitochondrial distress induce dynamic changes to both the host and viral RNA m6A methylome, and can trigger the derepression of long interspersed nuclear element 1 (LINE1), resulting in global hypomethylation, epigenetic changes, and genomic instability. The timely application of melatonin during early infection enhances host innate antiviral immune responses by preventing the formation of "viral factories" by nucleocapsid liquid-liquid phase separation that effectively blockades viral genome transcription and packaging, the disassembly of stress granules, and the sequestration of DEAD-box RNA helicases, including DDX3X, vital to immune signaling. Melatonin prevents membrane depolarization and protects cristae morphology to suppress glycolysis via antioxidant-dependent and -independent mechanisms. By restraining the derepression of LINE1 via multifaceted strategies, and maintaining the balance in m6A RNA modifications, melatonin could be the quintessential ancient molecule that significantly influences the outcome of the constant struggle between virus and host to gain transcriptomic and epitranscriptomic dominance over the host genome during acute infection and PASC.
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Affiliation(s)
- Doris Loh
- Independent Researcher, Marble Falls, TX 78654, USA;
| | - Russel J. Reiter
- Department of Cell Systems and Anatomy, UT Health San Antonio, San Antonio, TX 78229, USA
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17
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Newell KL, Waickman AT. Inflammation, immunity, and antigen persistence in post-acute sequelae of SARS-CoV-2 infection. Curr Opin Immunol 2022; 77:102228. [PMID: 35724449 PMCID: PMC9127180 DOI: 10.1016/j.coi.2022.102228] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/19/2022] [Indexed: 01/20/2023]
Abstract
SARS-CoV-2 infection is known to
result in a range of symptoms with varying degrees of acute-phase
severity. In a subset of individuals, an equally diverse collection of
long-term sequelae has been reported after convalescence. As survivorship
and therefore the number of individuals with ‘long-COVID’ continues to
grow, an understanding of the prevalence, origins, and mechanisms of
post-acute sequelae manifestation is critically needed. Here, we will
explore proposed roles of the anti-SARS-CoV-2 immune response in the
onset, severity, and persistence of SARS-CoV-2 post-acute sequelae. We
discuss the potential roles of persistent virus and autoantigens in this
syndrome, as well as the contributions of unresolved inflammation and
tissue injury. Furthermore, we highlight recent evidence demonstrating
the potential benefits of vaccination and immunity in the resolution of
post-acute symptoms.
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18
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Lee JH, Koepke L, Kirchhoff F, Sparrer KMJ. Interferon antagonists encoded by SARS-CoV-2 at a glance. Med Microbiol Immunol 2022; 212:125-131. [PMID: 35366686 PMCID: PMC8976456 DOI: 10.1007/s00430-022-00734-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/15/2022] [Indexed: 12/22/2022]
Abstract
The innate immune system is a powerful barrier against invading pathogens. Interferons (IFNs) are a major part of the cytokine-mediated anti-viral innate immune response. After recognition of a pathogen by immune sensors, signaling cascades are activated that culminate in the release of IFNs. These activate cells in an autocrine or paracrine fashion eventually setting cells in an anti-viral state via upregulation of hundreds of interferon-stimulated genes (ISGs). To evade the anti-viral effect of the IFN system, successful viruses like the pandemic severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) evolved strategies to counteract both IFN induction and signaling. In fact, more than half of the about 30 proteins encoded by SARS-CoV-2 target the IFN system at multiple levels to escape IFN-mediated restriction. Here, we review recent insights into the molecular mechanisms used by SARS-CoV-2 proteins to suppress IFN production and the establishment of an anti-viral state.
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Affiliation(s)
- Jung-Hyun Lee
- Institute of Molecular Virology, Ulm University Medical Center, Meyerhofstr. 1, 89081, Ulm, Germany
- Department of Life Science, University of Seoul, Seoul, 02504, Republic of Korea
| | - Lennart Koepke
- Institute of Molecular Virology, Ulm University Medical Center, Meyerhofstr. 1, 89081, Ulm, Germany
| | - Frank Kirchhoff
- Institute of Molecular Virology, Ulm University Medical Center, Meyerhofstr. 1, 89081, Ulm, Germany
| | - Konstantin M J Sparrer
- Institute of Molecular Virology, Ulm University Medical Center, Meyerhofstr. 1, 89081, Ulm, Germany.
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19
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Willan J, Hernandez L, Katz H, Gray N, Bienz N. Post-COVID-19 syndrome in patients with haematological disorders who have survived infection with severe acute respiratory syndrome coronavirus-2. Br J Haematol 2022; 197:e19-e23. [PMID: 34961926 DOI: 10.1111/bjh.18010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/08/2021] [Indexed: 11/28/2022]
Affiliation(s)
- John Willan
- Department of Haematology, Frimley Health NHS Foundation Trust, Slough, UK
- Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Churchill Hospital
| | - Lidice Hernandez
- Department of Haematology, Frimley Health NHS Foundation Trust, Slough, UK
| | - Harley Katz
- Department of Astrophysics, University of Oxford, Oxford, UK
| | - Nicola Gray
- Department of Haematology, Frimley Health NHS Foundation Trust, Slough, UK
- Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Churchill Hospital
| | - Nicola Bienz
- Department of Haematology, Frimley Health NHS Foundation Trust, Slough, UK
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20
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Loosen SH, Jensen BEO, Tanislav C, Luedde T, Roderburg C, Kostev K. Obesity and lipid metabolism disorders determine the risk for development of long COVID syndrome: a cross-sectional study from 50,402 COVID-19 patients. Infection 2022; 50:1165-1170. [PMID: 35355237 PMCID: PMC8966865 DOI: 10.1007/s15010-022-01784-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/04/2022] [Indexed: 12/12/2022]
Abstract
Purpose Metabolic disorders have been identified as major risk factors for severe acute courses of COVID-19. With decreasing numbers of infections in many countries, the long COVID syndrome (LCS) represents the next major challenge in pandemic management, warranting the precise definition of risk factors for LCS development. Methods We identified 50,402 COVID-19 patients in the Disease Analyzer database (IQVIA) featuring data from 1056 general practices in Germany. Multivariate logistic regression analysis was used to identify risk factors for the development of LCS. Results Of the 50,402 COVID-19 patients included into this analysis, 1,708 (3.4%) were diagnosed with LCS. In a multivariate regression analysis, we identified lipid metabolism disorders (OR 1.46, 95% CI 1.28–1.65, p < 0.001) and obesity (OR 1.25, 95% CI 1.08–1.44, p = 0.003) as strong risk factors for the development of LCS. Besides these metabolic factors, patients’ age between 46 and 60 years (compared to age ≤ 30, (OR 1.81 95% CI 1.54–2.13, p < 0.001), female sex (OR 1.33, 95% CI 1.20–1.47, p < 0.001) as well as pre-existing asthma (OR 1.67, 95% CI 1.39–2.00, p < 0.001) and depression (OR 1.27, 95% CI 1.09–1.47, p = < 0.002) in women, and cancer (OR 1.4, 95% CI 1.09–1.95, p = < 0.012) in men were associated with an increased likelihood of developing LCS. Conclusion Lipid metabolism disorders and obesity represent age-independent risk factors for the development of LCS, suggesting that metabolic alterations determine the risk for unfavorable disease courses along all phases of COVID-19.
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Affiliation(s)
- Sven H Loosen
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University Düsseldorf, Moorenstraße 5, 40225, Düsseldorf, Germany.
| | - Björn-Erik Ole Jensen
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University Düsseldorf, Moorenstraße 5, 40225, Düsseldorf, Germany
| | - Christian Tanislav
- Department of Geriatrics and Neurology, Diakonie Hospital Jung Stilling, Siegen, Germany
| | - Tom Luedde
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University Düsseldorf, Moorenstraße 5, 40225, Düsseldorf, Germany.
| | - Christoph Roderburg
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University Düsseldorf, Moorenstraße 5, 40225, Düsseldorf, Germany.
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21
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Clark IA. Chronic cerebral aspects of long COVID, post-stroke syndromes and similar states share their pathogenesis and perispinal etanercept treatment logic. Pharmacol Res Perspect 2022; 10:e00926. [PMID: 35174650 PMCID: PMC8850677 DOI: 10.1002/prp2.926] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/11/2022] [Accepted: 01/17/2022] [Indexed: 12/15/2022] Open
Abstract
The chronic neurological aspects of traumatic brain injury, post‐stroke syndromes, long COVID‐19, persistent Lyme disease, and influenza encephalopathy having close pathophysiological parallels that warrant being investigated in an integrated manner. A mechanism, common to all, for this persistence of the range of symptoms common to these conditions is described. While TNF maintains cerebral homeostasis, its excessive production through either pathogen‐associated molecular patterns or damage‐associated molecular patterns activity associates with the persistence of the symptoms common across both infectious and non‐infectious conditions. The case is made that this shared chronicity arises from a positive feedback loop causing the persistence of the activation of microglia by the TNF that these cells generate. Lowering this excess TNF is the logical way to reducing this persistent, TNF‐maintained, microglial activation. While too large to negotiate the blood‐brain barrier effectively, the specific anti‐TNF biological, etanercept, shows promise when administered by the perispinal route, which allows it to bypass this obstruction.
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Affiliation(s)
- Ian Albert Clark
- Research School of Biology, Australian National University, Canberra, ACT, Australia
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22
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Hopkins HK, Traverse EM, Barr KL. Methodologies for Generating Brain Organoids to Model Viral Pathogenesis in the CNS. Pathogens 2021; 10:pathogens10111510. [PMID: 34832665 PMCID: PMC8625030 DOI: 10.3390/pathogens10111510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/12/2021] [Accepted: 11/17/2021] [Indexed: 12/22/2022] Open
Abstract
(1) Background: The human brain is of interest in viral research because it is often the target of viruses. Neurological infections can result in consequences in the CNS, which can result in death or lifelong sequelae. Organoids modeling the CNS are notable because they are derived from stem cells that differentiate into specific brain cells such as neural progenitors, neurons, astrocytes, and glial cells. Numerous protocols have been developed for the generation of CNS organoids, and our goal was to describe the various CNS organoid models available for viral pathogenesis research to serve as a guide to determine which protocol might be appropriate based on research goal, timeframe, and budget. (2) Methods: Articles for this review were found in Pubmed, Scopus and EMBASE. The search terms used were "brain + organoid" and "CNS + organoid" (3) Results: There are two main methods for organoid generation, and the length of time for organoid generation varied from 28 days to over 2 months. The costs for generating a population of organoids ranged from USD 1000 to 5000. (4) Conclusions: There are numerous methods for generating organoids representing multiple regions of the brain, with several types of modifications for fine-tuning the model to a researcher's specifications. Organoid models of the CNS can serve as a platform for characterization and mechanistic studies that can reduce or eliminate the use of animals, especially for viruses that only cause disease in the human CNS.
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23
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Schmidt M, Arshad M, Bernhart SH, Hakobyan S, Arakelyan A, Loeffler-Wirth H, Binder H. The Evolving Faces of the SARS-CoV-2 Genome. Viruses 2021; 13:1764. [PMID: 34578345 PMCID: PMC8472651 DOI: 10.3390/v13091764] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/02/2021] [Accepted: 09/02/2021] [Indexed: 02/07/2023] Open
Abstract
Surveillance of the evolving SARS-CoV-2 genome combined with epidemiological monitoring and emerging vaccination became paramount tasks to control the pandemic which is rapidly changing in time and space. Genomic surveillance must combine generation and sharing sequence data with appropriate bioinformatics monitoring and analysis methods. We applied molecular portrayal using self-organizing maps machine learning (SOM portrayal) to characterize the diversity of the virus genomes, their mutual relatedness and development since the beginning of the pandemic. The genetic landscape obtained visualizes the relevant mutations in a lineage-specific fashion and provides developmental paths in genetic state space from early lineages towards the variants of concern alpha, beta, gamma and delta. The different genes of the virus have specific footprints in the landscape reflecting their biological impact. SOM portrayal provides a novel option for 'bioinformatics surveillance' of the pandemic, with strong odds regarding visualization, intuitive perception and 'personalization' of the mutational patterns of the virus genomes.
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Affiliation(s)
- Maria Schmidt
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Härtelstr. 16–18, 04107 Leipzig, Germany; (M.A.); (S.H.B.); (H.L.-W.)
| | - Mamoona Arshad
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Härtelstr. 16–18, 04107 Leipzig, Germany; (M.A.); (S.H.B.); (H.L.-W.)
| | - Stephan H. Bernhart
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Härtelstr. 16–18, 04107 Leipzig, Germany; (M.A.); (S.H.B.); (H.L.-W.)
| | - Siras Hakobyan
- Armenian Bioinformatics Institute (ABI), 7 Hasratyan Str., Yerevan 0014, Armenia; (S.H.); (A.A.)
- Research Group of Bioinformatics, Institute of Molecular Biology of the National Academy of Sciences of the Republic of Armenia, 7 Hasratyan Str., Yerevan 0014, Armenia
| | - Arsen Arakelyan
- Armenian Bioinformatics Institute (ABI), 7 Hasratyan Str., Yerevan 0014, Armenia; (S.H.); (A.A.)
- Research Group of Bioinformatics, Institute of Molecular Biology of the National Academy of Sciences of the Republic of Armenia, 7 Hasratyan Str., Yerevan 0014, Armenia
| | - Henry Loeffler-Wirth
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Härtelstr. 16–18, 04107 Leipzig, Germany; (M.A.); (S.H.B.); (H.L.-W.)
| | - Hans Binder
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Härtelstr. 16–18, 04107 Leipzig, Germany; (M.A.); (S.H.B.); (H.L.-W.)
- Armenian Bioinformatics Institute (ABI), 7 Hasratyan Str., Yerevan 0014, Armenia; (S.H.); (A.A.)
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