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Wang Z, Zhao H. TMEM176B Prevents and alleviates bleomycin-induced pulmonary fibrosis via inhibiting transforming growth factor β-Smad signaling. Heliyon 2024; 10:e35444. [PMID: 39170226 PMCID: PMC11336771 DOI: 10.1016/j.heliyon.2024.e35444] [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: 03/14/2024] [Revised: 07/28/2024] [Accepted: 07/29/2024] [Indexed: 08/23/2024] Open
Abstract
Pulmonary fibrosis is a severe and progressive lung disease characterized by the abnormal accumulation of extracellular matrix, leading to scarring and loss of normal lung function. Recent bioinformatics analysis through the Gene Expression Omnibus (GEO) database identified a significant downregulation of Transmembrane Protein 176B (TMEM176B), previously unexplored in the context of fibrotic lung tissues. To investigate the functional role of TMEM176B, we induced pulmonary fibrosis in mice using bleomycin, TGFβ1, and silica, which consistently resulted in a marked decrease in TMEM176B expression. Intriguingly, overexpression of TMEM176B via adenoviral vectors prior to the induction of fibrosis led to significant improvements in fibrotic manifestations and lung function. Mechanistically, TMEM176B appears to mitigate pulmonary fibrosis by inhibiting the TGFβ1-SMAD signaling pathway, which is a critical mediator of fibroblast proliferation and differentiation and promotes extracellular matrix production. These findings suggest that TMEM176B plays an inhibitory role in the pathophysiological processes of pulmonary fibrosis, highlighting its potential as a therapeutic target.
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Affiliation(s)
- Ziwei Wang
- Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hehua Zhao
- Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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2
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Le-Deygen I, Safronova A, Mamaeva P, Khristidis Y, Kolmogorov I, Skuredina A, Timashev P, Kudryashova E. Liposomal Forms of Fluoroquinolones and Antifibrotics Decorated with Mannosylated Chitosan for Inhalation Drug Delivery. Pharmaceutics 2023; 15:pharmaceutics15041101. [PMID: 37111586 PMCID: PMC10145208 DOI: 10.3390/pharmaceutics15041101] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023] Open
Abstract
The severe course of COVID-19 leads to the long-terming pulmonary diseases, such as bacterial pneumonia and post-COVID-19 pulmonary fibrosis. Thus, the essential task of biomedicine is a design of new effective drug formulations, including those for inhalation administration. In this work, we propose an approach to the creation of lipid–polymer delivery systems for fluoroquinolones and pirfenidone based on liposomes of various compositions decorated with mucoadhesive mannosylated chitosan. A generalizing study on the physicochemical patterns of the interactions of drugs with bilayers of various compositions was carried out, and the main binding sites were identified. The role of the polymer shell in the stabilization of vesicles and the delayed release of the contents has been demonstrated. For the liquid–polymer formulation of moxifloxacin, a prolonged accumulation of the drug in lung tissues was found after a single endotracheal administration to mice, significantly exceeding the control intravenous and endotracheal administration of the drug.
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Bazdar S, Kwee AKAL, Houweling L, de Wit-van Wijck Y, Mohamed Hoesein FAA, Downward GS, Nossent EJ, Maitland-van der Zee AH. A Systematic Review of Chest Imaging Findings in Long COVID Patients. J Pers Med 2023; 13:282. [PMID: 36836515 PMCID: PMC9965323 DOI: 10.3390/jpm13020282] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/25/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023] Open
Abstract
Long COVID is the persistence of one or more COVID-19 symptoms after the initial viral infection, and there is evidence supporting its association with lung damage. In this systematic review, we provide an overview of lung imaging and its findings in long COVID patients. A PubMed search was performed on 29 September 2021, for English language studies in which lung imaging was performed in adults suffering from long COVID. Two independent researchers extracted the data. Our search identified 3130 articles, of which 31, representing the imaging findings of 342 long COVID patients, were retained. The most common imaging modality used was computed tomography (CT) (N = 249). A total of 29 different imaging findings were reported, which were broadly categorized into interstitial (fibrotic), pleural, airway, and other parenchymal abnormalities. A direct comparison between cases, in terms of residual lesions, was available for 148 patients, of whom 66 (44.6%) had normal CT findings. Although respiratory symptoms belong to the most common symptoms in long COVID patients, this is not necessarily linked to radiologically detectable lung damage. Therefore, more research is needed on the role of the various types of lung (and other organ) damage which may or may not occur in long COVID.
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Affiliation(s)
- Somayeh Bazdar
- Department of Pulmonary Medicine, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Institute for Infection and Immunity, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Public Health, 1105 AZ Amsterdam, The Netherlands
| | - Anastasia K. A. L. Kwee
- Department of Radiology, University Medical Center Utrecht and Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Laura Houweling
- Department of Pulmonary Medicine, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands
- Department of Environmental Epidemiology, Institute for Risk Assessment Sciences (IRAS), 3584 CX Utrecht, The Netherlands
| | - Yolanda de Wit-van Wijck
- Department of Pulmonary Medicine, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Institute for Infection and Immunity, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Public Health, 1105 AZ Amsterdam, The Netherlands
| | | | - George S. Downward
- Department of Environmental Epidemiology, Institute for Risk Assessment Sciences (IRAS), 3584 CX Utrecht, The Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
| | - Esther J. Nossent
- Department of Pulmonary Medicine, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands
| | - Anke H. Maitland-van der Zee
- Department of Pulmonary Medicine, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Institute for Infection and Immunity, 1105 AZ Amsterdam, The Netherlands
- Amsterdam Public Health, 1105 AZ Amsterdam, The Netherlands
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Fernandes RS, Netto MRT, Carvalho FB, Rigatto K. Alamandine: A promising treatment for fibrosis. Peptides 2022; 157:170848. [PMID: 35931236 DOI: 10.1016/j.peptides.2022.170848] [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: 05/05/2022] [Revised: 07/27/2022] [Accepted: 08/01/2022] [Indexed: 01/18/2023]
Abstract
Angiotensin (Ang) II, the main active member of the renin angiotensin system (RAS), is essential for the maintenance of cardiovascular homeostasis. However, hyperactivation of the RAS causes fibrotic diseases. Ang II has pro-inflammatory actions, and moreover activates interstitial fibroblasts and/or dysregulates extracellular matrix degradation. The discovery of new RAS pathways has revealed the complexity of this system. Among the RAS peptides, alamandine (ALA, Ala1 Ang 1-7) has been identified in humans, rats, and mice, with protective actions in different pathological conditions. ALA has similar effects to its well-known congener, Ang-(1-7), as a vasodilator, anti-inflammatory, and antifibrotic. Its protective role against cardiovascular diseases is well-reviewed in the literature. However, the protective actions of ALA in fibrotic conditions have been little explored. Therefore, in this article, we review the ability of ALA to modulate the inflammatory process and collagen deposition, to serve as an antioxidant, and to mediate protection against functional disorders. In this scenario, we also explore ALA as a promising therapy for pulmonary fibrosis after COVID-19 infection.
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Affiliation(s)
- Renata Streck Fernandes
- Laboratório de Fisiologia Translacional, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Brazil; Programa de Pós-graduação em Ciências da Saúde, UFCSPA, Brazil
| | | | | | - Katya Rigatto
- Laboratório de Fisiologia Translacional, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Brazil; Programa de Pós-graduação em Ciências da Saúde, UFCSPA, Brazil.
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5
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Zhong H, Zhou Y, Mei SY, Tang R, Feng JH, He ZY, Xu QY, Xing SP. Scars of COVID-19: A bibliometric analysis of post-COVID-19 fibrosis. Front Public Health 2022; 10:967829. [PMID: 36203683 PMCID: PMC9530282 DOI: 10.3389/fpubh.2022.967829] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/19/2022] [Indexed: 01/25/2023] Open
Abstract
Background The coronavirus disease 2019 (COVID-19) becomes a worldwide public health threat. Increasing evidence proves that COVID-19-induced acute injuries could be reversed by a couple of therapies. After that, post-COVID-19 fibrosis (PCF), a sequela of "Long COVID," earns rapidly emerging concerns. PCF is associated with deteriorative lung function and worse quality of life. But the process of PCF remains speculative. Therefore, we aim to conduct a bibliometric analysis to explore the overall structure, hotspots, and trend topics of PCF. Materials and methods A comprehensive search was performed in the Web of Science core database to collect literature on PCF. Search syntax included COVID-19 relevant terms: "COVID 19," "COVID-19 Virus Disease," "COVID-19 Virus Infection," "Coronavirus Disease-19," "2019 Novel Coronavirus Disease," "2019 Novel Coronavirus Infection," "SARS Coronavirus 2 Infection," "COVID-19 Pandemic," "Coronavirus," "2019-nCoV," and "SARS-CoV-2"; and fibrosis relevant terms: "Fibrosis," "Fibroses," and "Cirrhosis." Articles in English were included. Totally 1,088 publications were enrolled. Searching results were subsequentially exported and collected for the bibliometric analysis. National, organizational, and individual level data were analyzed and visualized through biblioshiny package in the R, VOSviewer software, the CiteSpace software, and the Graphical Clustering Toolkit (gCLUTO) software, respectively. Results The intrinsic structure and development in the field of PCF were investigated in the present bibliometric analysis. The topmost keywords were "COVID-19" (occurrences, 636) surrounded by "SARS-CoV-2" (occurrences, 242), "coronavirus" (occurrences, 123), "fibrosis" (occurrences, 120), and "pneumonia" (occurrences, 94). The epidemiology, physiopathology, diagnosis, and therapy of PCF were extensively studied. After this, based on dynamic analysis of keywords, hot topics sharply changed from "Wuhan," "inflammation," and "cytokine storm" to "quality of life" and "infection" through burst detection; from "acute respiratory syndrome," "cystic-fibrosis" and "fibrosis" to "infection," "COVID-19," "quality-of-life" through thematic evolution; from "enzyme" to "post COVID." Similarly, co-cited references analysis showed that topics of references with most citations shift from "pulmonary pathology" (cluster 0) to "COVID-19 vaccination" (cluster 6). Additionally, the overview of contributors, impact, and collaboration was revealed. Summarily, the USA stood out as the most prolific, influential, and collaborative country. The Udice French Research University, Imperial College London, Harvard University, and the University of Washington represented the largest volume of publications, citations, H-index, and co-authorships, respectively. Dana Albon was the most productive and cited author with the strongest co-authorship link strength. Journal of Cystic Fibrosis topped the list of prolific and influential journals. Conclusion Outcomes gained from this study assisted professionals in better realizing PCF and would guide future practices. Epidemiology, pathogenesis, and therapeutics were study hotspots in the early phase of PCF research. As the spread of the COVID-19 pandemic and progress in this field, recent attention shifted to the quality of life of patients and post-COVID comorbidities. Nevertheless, COVID-19 relevant infection and vaccination were speculated to be research trends with current and future interest. International cooperation as well as in-depth laboratory experiments were encouraged to promote further explorations in the field of PCF.
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Bergantini L, Mainardi A, d’Alessandro M, Cameli P, Bennett D, Bargagli E, Sestini P. Common Molecular Pathways Between Post-COVID19 Syndrome and Lung Fibrosis: A Scoping Review. Front Pharmacol 2022; 13:748931. [PMID: 35308222 PMCID: PMC8931519 DOI: 10.3389/fphar.2022.748931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 02/14/2022] [Indexed: 01/18/2023] Open
Abstract
The pathogenetic mechanism of post-Covid-19 pulmonary fibrosis is currently a topic of intense research interest, but still largely unexplored. The aim of this work was to carry out a systematic exploratory search of the literature (Scoping review) to identify and systematize the main pathogenetic mechanisms that are believed to be involved in this phenomenon, in order to highlight the same molecular aspect of the lung. These aims could be essential in the future for therapeutic management. We identified all primary studies involving in post COVID19 syndrome with pulmonary fibrosis as a primary endpoint by performing data searches in various systematic review databases. Two reviewers independently reviewed all abstracts (398) and full text data. The quality of study has been assess through SANRA protocol. A total of 32 studies involving were included, included the possible involvement of inflammatory cytokines, concerned the renin-angiotensin system, the potential role of galectin-3, epithelial injuries in fibrosis, alveolar type 2 involvement, Neutrophil extracellular traps (NETs) and the others implied other specific aspects (relationship with clinical and mechanical factors, epithelial transition mesenchymal, TGF-β signaling pathway, midkine, caspase and macrophages, genetics). In most cases, these were narrative reviews or letters to the editor, except for 10 articles, which presented original data, albeit sometimes in experimental models. From the development of these researches, progress in the knowledge of the phenomenon and hopefully in its prevention and therapy may originate.
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Affiliation(s)
- Laura Bergantini
- Department of Medical Sciences, Surgery and Neurosciences, Respiratory Disease and Lung Transplant Unit, Respiratory Diseases and Transplant Unit, Siena University, Siena, Italy
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7
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Abstract
Analysis of the SARS-CoV-2 sequence revealed a multibasic furin cleavage site at the S1/S2 boundary of the spike protein distinguishing this virus from SARS-CoV. Furin, the best-characterized member of the mammalian proprotein convertases, is an ubiquitously expressed single pass type 1 transmembrane protein. Cleavage of SARS-CoV-2 spike protein by furin promotes viral entry into lung cells. While furin knockout is embryonically lethal, its knockout in differentiated somatic cells is not, thus furin provides an exciting therapeutic target for viral pathogens including SARS-CoV-2 and bacterial infections. Several peptide-based and small-molecule inhibitors of furin have been recently reported, and select cocrystal structures have been solved, paving the way for further optimization and selection of clinical candidates. This perspective highlights furin structure, substrates, recent inhibitors, and crystal structures with emphasis on furin's role in SARS-CoV-2 infection, where the current data strongly suggest its inhibition as a promising therapeutic intervention for SARS-CoV-2.
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Affiliation(s)
- Essam
Eldin A. Osman
- Department
of Medicinal Chemistry, College of Pharmacy, Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Alnawaz Rehemtulla
- Department
of Radiation Oncology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Nouri Neamati
- Department
of Medicinal Chemistry, College of Pharmacy, Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan 48109, United States
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8
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Reactivation of Pulmonary Tuberculosis in a Patient With COVID-19: Case Report and Review of Literature. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2021; 29:e468-e470. [PMID: 34803354 PMCID: PMC8594392 DOI: 10.1097/ipc.0000000000001032] [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] [Indexed: 01/19/2023]
Abstract
Given COVID-19 rise in populations with high burden of tuberculosis infection, the interplay between COVID-19 and tuberculosis reactivation needs further investigation. We report a case of a 64-year-old man who developed acute respiratory distress syndrome due to severe COVID-19 infection. He was managed with intubation, prone-position mechanical ventilation, inhaled nitric oxide, and methylprednisolone 40 mg intravenous twice daily for 5 days. He developed unexplained persistent fever and leukocytosis that failed to respond to empiric broad-spectrum antibacterial, antifungal agents, and a 3-day course of intravenous methylprednisolone 1000 mg for possible usual interstitial pneumonitis. His endotracheal aspiration samples tested positive for Mycobacterium tuberculosis, and antituberculosis regimen was started. The patient died as result of decision to withdraw life support. This report establishes the clinical picture of a tuberculosis reactivation in a COVID-19 patient. The complex interaction between COVID-19, steroids, and tuberculosis is a clinical dilemma of great significance.
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9
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Farooq S, Han S, Mohammad SAD, Ammar H. Post-COVID-19 pulmonary fibrosis. QJM 2021; 114:655-656. [PMID: 34002238 PMCID: PMC8600474 DOI: 10.1093/qjmed/hcab121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 04/19/2021] [Indexed: 11/12/2022] Open
Affiliation(s)
- S Farooq
- Internal Medicine Department, MedStar Washington Hospital Center, Washington, D.C, USA
- Corresponding author: Saad Farooq, MedStar Washington Hospital Center, 110 Irving St NW, Suite 1A50A, Washington, D.C. 20010, Tel: 202-230-7188, Fax: 202-877-8288,
| | - S Han
- Internal Medicine Department, MedStar Washington Hospital Center, Washington, D.C, USA
| | - S A-D Mohammad
- Internal Medicine Department, MedStar Washington Hospital Center, Washington, D.C, USA
| | - H Ammar
- Internal Medicine Department, MedStar Washington Hospital Center, Washington, D.C, USA
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10
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Miqdhaadh A, Imad HA, Fazeena A, Ngamprasertchai T, Nguitragool W, Nakayama EE, Shioda T. Multisystem Inflammatory Syndrome Associated with SARS-CoV-2 Infection in an Adult: A Case Report from the Maldives. Trop Med Infect Dis 2021; 6:tropicalmed6040187. [PMID: 34698279 PMCID: PMC8544693 DOI: 10.3390/tropicalmed6040187] [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: 09/11/2021] [Accepted: 10/18/2021] [Indexed: 12/24/2022] Open
Abstract
The multisystem inflammatory syndrome in adults (MIS-A) is a novel syndrome observed during COVID-19 outbreaks. This hyper-inflammatory syndrome is seen predominantly in children and adolescents. The case of an adult from the Maldives who had asymptomatic SARS-CoV-2 infection three weeks before presenting to the hospital with fever, rash, and shock is presented. De-identified clinical data were retrospectively collected to summarize the clinical progression and treatment during hospitalization and the six-month follow-up. SARS-CoV-2 infection was confirmed by RT-PCR. Other laboratory findings included anemia (hemoglobin: 9.8 g/dL), leukocytosis (leukocytes: 20,900/µL), neutrophilia (neutrophils: 18,580/µL) and lymphopenia (lymphocytes: 5067/µL), and elevated inflammatory markers, including C-reactive protein (34.8 mg/dL) and ferritin (2716.0 ng/dL). The electrocardiogram had low-voltage complexes, and the echocardiogram showed hypokinesia, ventricular dysfunction, and a pericardial effusion suggestive of myocardial dysfunction compromising hemodynamics and causing circulatory shock. These findings fulfilled the diagnostic criteria of MIS-A. The case was managed in the intensive care unit and required non-invasive positive pressure ventilation, inotropes, and steroids. With the new surges of COVID-19 cases, more cases of MIS-A that require the management of organ failure and long-term follow-up to recovery are anticipated. Clinicians should therefore be vigilant in identifying cases of MIS-A during the pandemic.
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Affiliation(s)
- Ahmed Miqdhaadh
- Department of Medicine, Indira Gandhi Memorial Hospital, Malé 20002, Maldives; (A.M.); (A.F.)
| | - Hisham Ahmed Imad
- Mahidol Vivax Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand;
- Department of Viral Infections, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; (E.E.N.); (T.S.)
- Correspondence: or ; Tel.: +66-631501402
| | - Aminath Fazeena
- Department of Medicine, Indira Gandhi Memorial Hospital, Malé 20002, Maldives; (A.M.); (A.F.)
| | - Thundon Ngamprasertchai
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand;
| | - Wang Nguitragool
- Mahidol Vivax Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand;
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Emi E. Nakayama
- Department of Viral Infections, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; (E.E.N.); (T.S.)
| | - Tatsuo Shioda
- Department of Viral Infections, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; (E.E.N.); (T.S.)
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Robey RC, Kemp K, Hayton P, Mudawi D, Wang R, Greaves M, Yioe V, Rivera-Ortega P, Avram C, Chaudhuri N. Pulmonary Sequelae at 4 Months After COVID-19 Infection: A Single-Centre Experience of a COVID Follow-Up Service. Adv Ther 2021; 38:4505-4519. [PMID: 34278556 PMCID: PMC8286847 DOI: 10.1007/s12325-021-01833-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 06/17/2021] [Indexed: 12/31/2022]
Abstract
INTRODUCTION At the end of the first year of the COVID-19 pandemic, more than 78 million known survivors were recorded. The long-term pulmonary sequelae of COVID-19 remain unknown. METHODS We performed a retrospective analysis of a post-COVID follow-up service to estimate the burden of persistent pulmonary morbidity in hospitalised COVID survivors. RESULTS A total of 221 patients were followed-up: 44 intensive care unit (ICU) and 177 ward patients. Further investigations were planned as per British Thoracic Society Guidelines: For all ICU patients (n = 44) and for 38 of 177 (21%) ward-based patients who had persistent symptoms and/or persistent radiographic changes on CXR at their initial 8-week follow-up visit. In the ward-based cohort, statistically significant associations with persistent symptoms were being an ex- or current smoker, having pre-existing diabetes, and having a longer length of stay. In patients requiring further investigations, pulmonary function tests (PFTs; n = 67) at an average of 15 weeks post-discharge showed abnormalities in at least one PFT parameter in 79% (equating to 24% of the entire cohort). The most common abnormality was an abnormal diffusion capacity of carbon monoxide (TLCO), highest in the ICU cohort (64% ICU vs. 38% non-ICU). TLCO correlated negatively with length of stay and with maximum inspired FiO2 in the patient group as a whole. In ICU patients, TLCO correlated negatively with maximum inspired positive airway pressure. Computed tomography scans (n = 72) at an average of 18 weeks post-discharge showed evidence of persistent ground glass opacities in 44% and fibrosis in 21% (equating to 7% of the entire cohort). CONCLUSION Our data add to the growing evidence that there will be pulmonary sequelae in a proportion of COVID survivors, providing some insight into what may become a significant chronic global health problem.
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Affiliation(s)
- Rebecca C Robey
- Department of Respiratory Medicine, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK.
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, University of Manchester, Manchester, UK.
| | - Katie Kemp
- Department of Respiratory Medicine, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Philip Hayton
- Department of Respiratory Medicine, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Dalia Mudawi
- Department of Respiratory Medicine, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Ran Wang
- Department of Respiratory Medicine, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, University of Manchester, Manchester, UK
- Manchester Academic Health Science Centre and NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Melanie Greaves
- Department of Radiology, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Veronica Yioe
- Department of Respiratory Medicine, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Pilar Rivera-Ortega
- Department of Respiratory Medicine, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Cristina Avram
- Department of Respiratory Medicine, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Nazia Chaudhuri
- Department of Respiratory Medicine, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
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Kalafatis M. Covid-19: A Serious Vascular Disease With Primary Symptoms Of A Respiratory Ailment. J Appl Lab Med 2021; 6:1099-1104. [PMID: 34240194 DOI: 10.1093/jalm/jfab084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/25/2021] [Indexed: 12/11/2022]
Affiliation(s)
- Michael Kalafatis
- Department of Chemistry and Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, Cleveland, OH
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13
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Post-COVID-19 Pulmonary Fibrosis: Novel Sequelae of the Current Pandemic. J Clin Med 2021; 10:jcm10112452. [PMID: 34205928 PMCID: PMC8199255 DOI: 10.3390/jcm10112452] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/21/2021] [Accepted: 05/27/2021] [Indexed: 12/15/2022] Open
Abstract
Since the initial identification of the novel coronavirus SARS-CoV-2 in December 2019, the COVID-19 pandemic has become a leading cause of morbidity and mortality worldwide. As effective vaccines and treatments begin to emerge, it will become increasingly important to identify and proactively manage the long-term respiratory complications of severe disease. The patterns of imaging abnormalities coupled with data from prior coronavirus outbreaks suggest that patients with severe COVID-19 pneumonia are likely at an increased risk of progression to interstitial lung disease (ILD) and chronic pulmonary vascular disease. In this paper, we briefly review the definition, classification, and underlying pathophysiology of interstitial lung disease (ILD). We then review the current literature on the proposed mechanisms of lung injury in severe COVID-19 infection, and outline potential viral- and immune-mediated processes implicated in the development of post-COVID-19 pulmonary fibrosis (PCPF). Finally, we address patient-specific and iatrogenic risk factors that could lead to PCPF and discuss strategies for reducing risk of pulmonary complications/sequelae.
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14
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Tanni SE, Fabro AT, de Albuquerque A, Ferreira EVM, Verrastro CGY, Sawamura MVY, Ribeiro SM, Baldi BG. Pulmonary fibrosis secondary to COVID-19: a narrative review. Expert Rev Respir Med 2021; 15:791-803. [PMID: 33902377 DOI: 10.1080/17476348.2021.1916472] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Introduction: Coronavirus disease 2019 (COVID-19) is still increasing worldwide, and as a result, the number of patients with pulmonary fibrosis secondary to COVID-19 will expand over time. Risk factors, histopathological characterization, pathophysiology, prevalence, and management of post-COVID-19 pulmonary fibrosis are poorly understood, and few studies have addressed these issues.Areas covered:This article reviews the current evidence regarding post-COVID-19 pulmonary fibrosis, with an emphasis on the potential risk factors, histopathology, pathophysiology, functional and tomographic features, and potential therapeutic modalities. A search on the issue was performed in the MEDLINE, Embase, and SciELO databases and the Cochrane library between 1 December 2019, and 25 January 2021. Studies were reviewed and relevant topics were incorporated into this narrative review. Expert opinion: Pulmonary sequelae may occur secondary to COVID-19, which needs to be included as a potential etiology in the current differential diagnosis of pulmonary fibrosis. Therefore, serial clinical, tomographic, and functional screening for pulmonary fibrosis is recommended after COVID-19, mainly in patients with pulmonary involvement in the acute phase of the disease. Further studies are necessary to determine the risk factors, markers, pathophysiology, and appropriate management of post-COVID-19 pulmonary fibrosis.
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Affiliation(s)
- Suzana Erico Tanni
- Division of Internal Medicine of Botucatu Medical School, São Paulo State University-UNESP, Botucatu, Brazil
| | - Alexandre Todorovic Fabro
- Department of Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - André de Albuquerque
- Divisão De Pneumologia, Instituto Do Coração (Incor), Hospital Das Clínicas HCFMUSP, Faculdade De Medicina, Universidade De São Paulo, São Paulo, SP, Brazil
| | | | | | - Márcio Valente Yamada Sawamura
- Instituto De Radiologia, Hospital Das Clínicas HCFMUSP, Faculdade De Medicina, Universidade De São Paulo, São Paulo, SP, Brazil
| | - Sergio Marrone Ribeiro
- Department of Radiology, Botucatu Medical School, São Paulo State University-UNESP, Botucatu, Brazil
| | - Bruno Guedes Baldi
- Divisão De Pneumologia, Instituto Do Coração (Incor), Hospital Das Clínicas HCFMUSP, Faculdade De Medicina, Universidade De São Paulo, São Paulo, SP, Brazil
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Piro R, Casalini E, Livrieri F, Fontana M, Ghidoni G, Taddei S, Facciolongo N. Interventional pulmonology during COVID-19 pandemic: current evidence and future perspectives. J Thorac Dis 2021; 13:2495-2509. [PMID: 34012596 PMCID: PMC8107537 DOI: 10.21037/jtd-20-2192] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
COVID-19, caused by SARS-CoV-2 infection, has become increasingly prevalent worldwide, reaching a pandemic stage in March 2020. The organization of health care services had to change because of this new disease, with the need to reallocate staff and materials, besides changing management protocols. A very important challenge is not to expose patients and health care workers to the risk of infection and not to waste personal protective equipment (PPE). In the field of interventional pulmonology, various aspects related to COVID-19 must be taken into great consideration. Although bronchoscopy is not a first-line test for patients with suspected SARS-CoV-2 infection, it has a role in selected cases and it can be useful for differential diagnosis. However, bronchoscopy is an aerosol-generating procedure, that’s why its unjustified use could contribute to propagate the virus. For this reason, the utility of each procedure must be carefully evaluated, the patient has to be properly investigated before the procedure, which has to be performed with specific precautions, including adequate PPE. In this review, we summarize the knowledge and the principal statements about endoscopic activity in COVID-19 period, in both diagnosis of COVID-19 and management of patients. How to safely perform both bronchoscopic and pleural-related procedures (thoracoscopy, pleural biopsy and drainage of pleural effusions) is described with the aim to help the staff to decide when and how performing a procedure. We also highlight how interventional pulmonology could help in matter of complications related to COVID-19.
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Affiliation(s)
- Roberto Piro
- Pulmonology Unit, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Italy
| | - Eleonora Casalini
- Pulmonology Unit, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Italy
| | - Francesco Livrieri
- Pulmonology Unit, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Italy
| | - Matteo Fontana
- Pulmonology Unit, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Italy
| | - Giulia Ghidoni
- Pulmonology Unit, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Italy
| | - Sofia Taddei
- Pulmonology Unit, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Italy
| | - Nicola Facciolongo
- Pulmonology Unit, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Italy
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de Sire A, Andrenelli E, Negrini F, Patrini M, Lazzarini SG, Ceravolo MG. Rehabilitation and COVID-19: a rapid living systematic review by Cochrane Rehabilitation Field updated as of December 31st, 2020 and synthesis of the scientific literature of 2020. Eur J Phys Rehabil Med 2021; 57:181-188. [PMID: 33599442 DOI: 10.23736/s1973-9087.21.06870-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION COVID-19 infection significantly increased mortality risk and the burden of disability in most survivors, regardless of symptom severity at onset. The rehabilitation needs of people infected are receiving growing attention, as evidenced by the increasing number of publications, including those addressing the chronic consequences of infection. This rapid living systematic review reports the evidence published in November and December 2020 and summarises the entire body of literature on rehabilitation in COVID-19 patients published in 2020. EVIDENCE ACQUISITION This update was performed using the methodology reported by the second edition conducted by Cochrane Rehabilitation REH-COVER Action. We searched PubMed, Embase, CINAHL, Scopus, Web of Science, and Pedro databases. Papers related to COVID-19 and rehabilitation were retrieved and summarised descriptively. EVIDENCE SYNTHESIS The search retrieved 4441 studies. After the removal of duplicates and the screening for title and abstract, we retained 105 studies. Of these, we included 54 in the qualitative synthesis of this update. According to OCEBM 2011 levels of evidence table, most studies (64.8%) fall within the category of level 4 evidence. Up to 40.7% of papers included COVID-19 patients in the postacute phase. In 2020, our rapid living systematic review included 230 studies; most of these (73.9%) were level 4 studies, 25.7% were level 3, and only one study was level 2. The evidence level improved over time. While most studies (44.8%) included patients with acute COVID-19, we observed a gradual increase in the number of reports about chronic symptoms and the long-term consequences of the infection. CONCLUSIONS The update of the rapid living systematic review by Cochrane Rehabilitation Field demonstrates an increase in the level of evidence of studies addressing the rehabilitation needs associated with COVID-19 infection. Although most studies are still case reports/series, there is a trend towards conducting prospective investigations of the early natural history of the disease (first months post onset). High-quality-level studies on the efficacy of rehabilitation, and long-term monitoring of the disease and its sequelae are yet to emerge.
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Affiliation(s)
- Alessandro de Sire
- Department of Medical and Surgical Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy
| | - Elisa Andrenelli
- Department of Experimental and Clinical Medicine, "Politecnica delle Marche" University, Ancona, Italy
| | | | | | | | - Maria G Ceravolo
- Department of Experimental and Clinical Medicine, "Politecnica delle Marche" University, Ancona, Italy
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