Novel Coronavirus Outbreak Apr 11 - Apr 17 2022

Most recent articles (newest articles listed first)

Open access

Myocarditis following AstraZeneca (an adenovirus vector vaccine) COVID‐19 vaccination: A case report

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COVID-19 vaccination-induced myocarditis is rare but has a wide range of clinical presentations. Patients should not be discouraged from receiving COVID-19 vaccines, especially when the benefits far outweigh the risk of developing complications.

Open access

Guillain‐Barré syndrome after mRNA‐1273 (Moderna) COVID‐19 vaccination: A case report

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KCM: Our case highlight the need for vigilance in patients with neurologic symptoms after COVID-19 vaccination and for postvaccination surveillance programs to assess causality of GBS.

Open access

An overview on inactivated and live‐attenuated SARS‐CoV‐2 vaccines

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SARS-CoV-2 virus enters the body and replicates inside the cells. COVID-19 is ingested by an antigen presenting cells like dendritic cells. Afterward, the antigen is recognized by Th cells that recruit other immune cells for infection control. B cells produce specific antibody against COVID-19 and cytotoxic T cells destroy the cell infected by virus. Finally, some B and T cells remain in the body for immunological memory.

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Recent Advances in Modified Cap Analogs: Synthesis, Biochemical Properties, and mRNA Based Vaccines

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Trinucleotide cap analogs outperform dinucleotide cap analogs in terms of capping efficiency and translational properties. mRNA vaccines contain the presence of mRNA cap 1 structure. mRNA cap analogs can be used in the area of anticancer immunization, protein production, and gene therapy.

Open access

Colonization of nasal cavities by Staphylococcus epidermidis mitigates SARS-CoV-2 nucleocapsid phosphoprotein-induced interleukin (IL)-6 in the lung

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Nasal administration of liquid coco-caprylate/caprate (LCC) onto Staphylococcus epidermidis (S. epidermidis)-colonized mice significantly attenuated NPP-induced IL-6. Inhibition of Ffar2 impeded the effect of S. epidermidis plus LCC on the reduction of NPP-induced IL-6. Collectively, these results suggest that nasal S. epidermidis is part of the first line of defense in ameliorating a cytokine storm induced by airway infection of SARS-CoV-2.

Open access

An overview on inactivated and live‐attenuated SARS‐CoV‐2 vaccines

Graphical Abstract

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SARS-CoV-2 virus enters the body and replicates inside the cells. COVID-19 is ingested by an antigen presenting cells like dendritic cells. Afterward, the antigen is recognized by Th cells that recruit other immune cells for infection control. B cells produce specific antibody against COVID-19 and cytotoxic T cells destroy the cell infected by virus. Finally, some B and T cells remain in the body for immunological memory.

Open access

COVID‐19 and acute pancreatitis: A systematic review

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We aimed to systematically review the relationship between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and acute pancreatitis, seeing that the coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 infection also affects the gastrointestinal (GI) system. Acute pancreatitis should be considered in COVID-19 patients, especially in those exhibiting GI symptoms; however, evidence to establish a causal relationship between SARS-CoV-2 infection and AP is currently lacking.

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The kinetics and predictors of anti‐SARS‐CoV‐2 antibodies up to 8 months after symptomatic COVID‐19: A Czech cross‐sectional study

Highlights

  • 60% and 35% of subjects maintain IgG seropositivity 6- and 8-month post COVID-19.

  • Characteristics of the acute phase of COVID-19 are relevant for antibody responses.

  • The number of symptoms of acute COVID-19 predicts persisting IgG seropositivity.

  • Symptom duration predicts persisting IgM seropositivity.

  • Anamnestic data may serve as simple predictors of seropositivity post COVID-19.

Open access

Anti‐IFN‐α/‐ω neutralizing antibodies from COVID‐19 patients correlate with downregulation of IFN response and laboratory biomarkers of disease severity

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Autoantibodies capable of neutralizing multiple IFN-α subtypes and IFN-ω can be found in severe COVID-19 patients, preferentially males. Anti-IFN-I neutralizing antibodies (NAB) positive patients present a defective IFN response and have raised levels of biochemical and hematological parameters predictive of severe COVID-19.

Open access

The impact of the COVID-19 pandemic on cancer diagnosis based on pathology notifications: A comparison across the Nordic countries during 2020

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What's new?

The severity of the COVID-19 pandemic and subsequent mitigation strategies have varied across the Nordic countries. This is the first international comparison of cancer notification rates during the first year of the COVID-19 pandemic, including six countries with similar tax-funded healthcare systems and population-based cancer reporting. The findings suggest that, despite differences in pandemic mitigation efforts, the severity of the pandemic may have had a larger effect on cancer detection than strict societal restrictions. In all countries, it will be of importance to monitor future trends in late-stage cancer incidence and survival.

Open access

Natural killer cell‐mediated ADCC in SARS‐CoV‐2‐infected individuals and vaccine recipients

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Antibodies induced by SARS-CoV-2 infection or vaccination mediate NK cell activation, resulting in the release of cytotoxic granules, referred to as ADCC. Highest levels of ADCC were observed when using plasma from BNT162b2-vaccinated individuals. (Created with BioRender.com)

Open access

Deciphering the quality of SARS‐CoV‐2 specific T‐cell response associated with disease severity, immune memory and heterologous response

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“In acute infection, combinations with only IFN-γ were deleterious and those with IL-2 were associated with a better course of acute infection. Additionally, mild patients had a more polyfunctional T response. In severe patients, there was increased antibody production inversely associated with the expression of combinations including IL-2. Seven months after infection, cellular and humoral responses were present, with T-cell response quality similar to acute infection. However, previously hospitalised subjects had higher T-cell exhaustion. Finally, an association was found between the response to HCoV and SARS-CoV-2 mainly mediated by IL-2 expression in pre-COVID-19 participants.”

Open access

Respirators in Healthcare: Material, Design, Regulatory, Environmental, and Economic Considerations for Clinical Efficacy

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Healthcare workers exposed to potential airborne hazards require sufficient respiratory protection. The ability of respirators to shield hazards depends on design, material, proper fit, and environmental conditions. Here respirator design and material characteristics are reviewed, as well as properties of airborne hazards and filtration mechanisms, regulatory standards, respirator efficacy in clinical settings, attitudes toward respiratory protection, and environmental and economic considerations.

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The impact of the COVID‐19 school closures on families with children with disabilities: A qualitative analysis

Research Highlights

  • Parents expressed concerns related to school connectedness, including those related to communication and collaboration with the school and relationships with teachers and service providers.

  • Parents had difficulties related to the shift to remote platforms, including challenges related to navigating multiple online platforms.

  • Parents learned more about their child as a learner during online learning.

Open access

Effects of COVID‐19 lockdown on arrhythmias in patients with implantable cardioverter‐defibrillators in southern Italy

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In this retrospective, multicentre cohort study, we included 574 remotely monitored implantable cardioverter defibrillator (ICD) and cardiac resynchronization devices (CRT-D) recipients, comparing the burden of arrhythmias occurred during the lockdown period due to COVID-19 epidemics (from March 9th to May 1st 2020) with the arrhythmias burden of the corresponding period in 2019. #10;During pandemics lockdown period we observed an higher burden of arrhythmic events in ICD/CRT-D patients followed up through device remote monitoring. #10;

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Changes in alcohol use during the COVID‐19 pandemic and previous pandemics: A systematic review

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A systematic search of studies examining changes in alcohol use during or following pandemics compared to before a pandemic occurred identified 7 cohort and 21 cross-sectional studies. Alcohol use may have decreased in some countries and remained constant in others. Heavy episodic drinking and problematic alcohol use may have increased in some countries and remained stable in others. Additionally, the lack of studies from low-income countries indicates a dearth of information for most of the world’s population.

Open access

Potent Anti‐SARS‐CoV‐2 Efficacy of COVID‐19 Hyperimmune Globulin from Vaccine‐Immunized Plasma

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Coronavirus disease 2019 (COVID-19) hyperimmune globulin (COVID-HIG) prepared from the plasma of healthy donors vaccinated with BBIBP-CorV (Sinopharm COVID-19 vaccine) exhibits broad-spectrum neutralization effects against multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern in vitro and shows protective effect against SARS-CoV-2 infection in vivo. It is currently under clinical evaluation for the treatment of COVID-19 (NCT05173441).

Open access

An AIEgen/graphene oxide nanocomposite (AIEgen@GO)‐based two‐stage “turn‐on” nucleic acid biosensor for rapid detection of SARS‐CoV‐2 viral sequence

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An AIEgen-graphene oxide (GO) nanocomposite-based assay is designed for rapid detection of SARS-CoV-2 nucleic acids. The sensing mechanism is based on two-stage fluorescence signal recovery due to fluorescence resonance energy transfer (FRET) effect by detaching AIEgen from GO surface and restricted intramolecular rotation (RIR) effect by formation of nucleic acid duplexes.

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Job satisfaction, performance appraisal, reinforcement and job tasks in medical healthcare professionals during the COVID‐19 pandemic outbreak

Highlights

  • Medical healthcare providers as employees in a hospital are experiencing occupational challenges during the COVID-19 pandemic.

  • Perceived job satisfaction mediates the relationship between performance appraisal and reinforcement in their assigned frontline or non-frontline job tasks during COVID-19 pandemic.

  • Mental healthcare planning and management of medical healthcare professionals is vital to ensure the availability of health services.

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Identification of Alkaloids from Terminalia chebula as Potent SARS- CoV-2 Main Protease Inhibitors: An In Silico Perspective

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A detailed in silico studies have been performed on the natural compounds of the Terminalia Chebula, a well-known herbal plant as potential targets against Mpro of SARS-CoV-2, through docking and Molecular Dynamics simulations. Our results showed Daucosterol, Arjunetin, Maslinic acid, and Bellericoside may evolve as promising anti-COVID-19 drugs in the near future.

Open access

Intranasal administration of a virus like particles‐based vaccine induces neutralizing antibodies against SARS‐CoV‐2 and variants of concern

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In this study, we describe a COVID-19 vaccine based on virus-like particles (VLPs) for intranasal administration. We demonstrate that the vaccine candidate (CuMVTT-RBD) is highly immunogenic in mice and is capable of inducing mucosal and systemic RBD as well as spike specific antibody responses. The induced antibodies are capable of neutralizing SARS-CoV-2 and variants of concern (VOCs).Abbreviations: COVID-19, coronavirus disease 2019; RBD, receptor-binding domain; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; VLPs, virus-like particles; VOC, variant of concern

Open access

RETRACTED: Increased nurses’ anxiety disorder during the COVID‐19 outbreak

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The rapid outbreak of Covid-19 at the beginning of 2020 in the world put severe physical and psychological pressure on the medical staff of hospitals involved in the care of patients with Covid-19 to the extent that the risk of post-traumatic stress disorder (PTSD) increased for this group. In fact, the serious spread of traumatic psychiatric symptoms in the current situation can lead to damage to the health system.

Open access

Characteristic analysis of Omicron‐included SARS‐CoV‐2 variants of concern

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In this study, we first predicted and compared the structure of the S protein and B-cell epitopes of different SARS-CoV-2 variants. Then, the binding ability of different SARS-CoV-2 variant S proteins to angiotensin-converting enzyme 2 (ACE2) cells and the affinity of RBD region to ACE2 were further compared through pseudovirus infection and intermolecular binding ability test. Finally, cell infection experiments were performed. The results unexpectedly showed that Omicron possesses lower ACE2 binding capacity, and lower replication capacity than Delta strain.

Open access

Antigenicity comparison of SARS‐CoV‐2 Omicron sublineages with other variants contained multiple mutations in RBD

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A few mAbs showed strong and broad-spectrum neutralizing activity against the tested variants. The antigenicity of Omicron sublineages was significantly different from other variants. The Omicron immunogen-elicited antibody was not sensitive to other variants.

Open access

COVID‐19 did not result in increased hospitalization for stroke and transient ischemic attack: A nationwide study

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The rate of stroke admissions during the COVID-19 pandemic remained largely unchanged in Denmark. Higher mortality was only seen in the first period. Quality of treatment remained unchanged.

Open access

The effect of age on the magnitude and longevity of Th1-directed CD4 T-cell responses to SARS-CoV-2

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A large cohort of un-vaccinated, mild COVID-19-recovered individual's Th1-directed CD4 T cell responses to SARS-CoV-2 peptides were analysed with regards to response magnitude and longevity alongside age. Th1-directed CD4 T cell responses were detectable at least nine months after recovery in all age groups, however, significantly more robust poly-functional responses were detected within older age-groups which persisted over time.

Open access

Clinical manifestations, treatment options, and comorbidities in COVID‐19 relapse patients: A systematic review

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Totally, 1807 studies obtained from PubMed/Medline, Web of Science, and Embase databases. Following the removal of duplicates, the title and abstract of 998 studies were screened to select the studies which report the relapse of COVID-19 after a negative RT-PCR test. Finally, among the 152 full-text articles, 54 studies were found to be eligible for data extraction.