Covid-19 Sentry

Contents

• From Preprints
• From Clinical Trials
• From PubMed
• From Patent Search

From Preprints

• Career Navigator: An online platform to streamline professional development and career education for graduate bioscientists -
  Graduate professional development is a highly dynamic enterprise that prepares graduate students for personal and career success in a variety of fields, including the biosciences. National policies, funding awards, and institutional programs have generated myriad tools and services for graduate bioscience students, including new learning resources, events, connections to prospective employers, and opportunities to strengthen academic and professional portfolios. These interventions are welcome and have done much to enhance graduate bioscience training, but they may also be overwhelming for trainees. To streamline professional development and career education information for the bioscience graduate students at our institution, we tested a model where we built a centralized web portal of career development resources. Here we present our strategy and best practices for website design. We show data that students preferred a centralized online portal over other forms of resource communication; that programming, paired communication and environmental factors (e.g. remote learning and work as in the COVID-19 pandemic) combined to increase sustained engagement with the site; and that harnessing website analytics is an effective way to measure site utilization and generate insights on programming and resource development. This data, in turn, fits into broader priorities to evaluate interventions in graduate bioscience education.
  🖺 Full Text HTML: Career Navigator: An online platform to streamline professional development and career education for graduate bioscientists
• Heterologous Prime-Boost with Immunologically Orthogonal Protein Nanoparticles for Peptide Immunofocusing -
  Protein nanoparticles are effective platforms for antigen presentation and targeting effector immune cells in vaccine development. Encapsulins are a class of protein-based microbial nanocompartments that self-assemble into icosahedral structures with external diameters ranging from 24 to 42 nm. Encapsulins from Mxyococcus xanthus were designed to package bacterial RNA when produced in E. coli and were shown to have immunogenic and self-adjuvanting properties enhanced by this RNA. We genetically incorporated a 20-mer peptide derived from a mutant strain of the SARS-CoV-2 receptor binding domain (RBD) into the encapsulin protomeric coat protein for presentation on the exterior surface of the particle. This immunogen elicited conformationally-relevant humoral responses to the SARS-CoV-2 RBD. Immunological recognition was enhanced when the same peptide was presented in a heterologous prime/boost vaccination strategy using the engineered encapsulin and a previously reported variant of the PP7 virus-like particle, leading to the development of a selective antibody response against a SARS-CoV-2 RBD point mutant. While generating epitope-focused antibody responses is an interplay between inherent vaccine properties and B/T cells, here we demonstrate the use of orthogonal nanoparticles to fine-tune the control of epitope focusing.
  🖺 Full Text HTML: Heterologous Prime-Boost with Immunologically Orthogonal Protein Nanoparticles for Peptide Immunofocusing
• Biochemical characterization of naturally occurring mutations in SARS-CoV-2 RNA-dependent RNA polymerase -
  Since the emergence of SARS-CoV-2, mutations in all subunits of the RNA-dependent RNA polymerase (RdRp) of the virus have been repeatedly reported. Although RdRp represents a primary target for antiviral drugs, experimental studies exploring the phenotypic effect of these mutations have been limited. This study focuses on the phenotypic effects of substitutions in the three RdRp subunits: nsp7, nsp8, and nsp12, selected based on their occurrence rate and potential impact. We employed nano-differential scanning fluorimetry and microscale thermophoresis to examine the impact of these mutations on protein stability and RdRp complex assembly. We observed diverse impacts; notably, a single mutation in nsp8 significantly increased its stability as evidenced by a 13 [deg]C increase in melting temperature, whereas certain mutations in nsp7 and nsp8 reduced their binding affinity to nsp12 during RdRp complex formation. Using a fluorometric enzymatic assay, we assessed the overall effect on RNA polymerase activity. We found that most of the examined mutations altered the polymerase activity, often as a direct result of changes in stability or affinity to the other components of the RdRp complex. Intriguingly, a combination of nsp8 A21V and nsp12 P323L mutations resulted in a 50% increase in polymerase activity. Additionally, some of the examined substitutions in the RdRp subunits notably influenced the sensitivity of RdRp to Remdesivir, highlighting their potential implications for therapeutic strategies. To our knowledge, this is the first biochemical study to demonstrate the impact of amino acid mutations across all components constituting the RdRp complex in emerging SARS-CoV-2 subvariants.
  🖺 Full Text HTML: Biochemical characterization of naturally occurring mutations in SARS-CoV-2 RNA-dependent RNA polymerase
• Emotional Contagion in Scandinavia during the COVID-19 Public Health Crisis -
  In this article we present the findings of social media analysis of the spread of misinformation in the wake of the COVID-19 pandemic and outline how analyses of the psychological properties of a text can be used to optimize strategic messaging online. Our data used Twitter data, collected during the COVID-19 pandemic and analyzed using a suite of AI based analytical tools, which provided data for further empirical analysis. The analysis yielded insights related to the differences in the dynamics of the spread of misinformation within (and outside of) Scandinavian countries. Analysing this data enabled us to explore three hypotheses: (1) Misinformation will be associated with specific moral signatures, which will differ between Scandinavian and non-Scandinavian samples, (2) Levels of engagement will be associated with specific themes and moral concerns, which will differ between Scandinavian and non-Scandinavian samples, and (3) Within Scandinavia, similar unique signatures will be discernible at the country level, with Sweden driving significant differences. These specific results provide guidance for healthcare professionals responsible for communicating information and crafting messages that are more resonant with their target population and more generally demonstrate the ability for social media analysis to be useful in strategic decision making when going beyond focusing on engagement metrics or sentiment alone.
  🖺 Full Text HTML: Emotional Contagion in Scandinavia during the COVID-19 Public Health Crisis
• Leveraging Social Media Data for Unobtrusive Measurement of Academics’ Well-Being -
  Understanding and promoting researchers’ well-being is crucial for successful research outcomes and a thriving scientific community. Traditional well-being assessments can be resource-intensive, prompting the computational analysis of academic social networks as a promising alternative. It has been shown that sentiment analysis of social media text data can be used to infer well-being in the general population, but it is not known whether this approach is transferable to the specific subgroup of researchers. This proof-of-concept study addresses this research question by assessing the potential of scholarly communication in social media to provide insights into researchers’ emotional well-being using sentiment analysis. Therefore, we derived researchers’ emotional well-being from a dataset of more than 13 Million tweets from almost 16,000 psychology researchers, and utilized survey data from the COVID-19 pandemic for external validation of our results. Our aim was to confirm two hypotheses: lower well-being during the pandemic (H1) and a stronger impact on female researchers (H2). Using structural break analysis, the impact of the pandemic was found to be statistically significant for positive sentiments. A differential effect by gender was observed descriptively, but did not reach statistical significance. Results suggest that sentiment analysis of researchers’ tweets can provide insights into their well-being, but to a limited extent than in the general population. Exploratory analysis of cognitive well-being revealed that some, but not all PERMA+4 dimensions are prevalent in researchers’ social media posts. We discuss promising expansions of our approach and highlight practical implications for policymakers.
  🖺 Full Text HTML: Leveraging Social Media Data for Unobtrusive Measurement of Academics’ Well-Being
• Deep plasma proteomics with data-independent acquisition: A fastlane towards biomarkers identification. -
  Plasma proteomic is a precious tool in human disease research, but requires extensive sample preparation in order to perform in-depth analysis and biomarker discovery using traditional Data-Dependent Acquisition (DDA). Here, we highlight the efficacy of combining moderate plasma prefractionation and Data-Independent Acquisition (DIA) to significantly improve proteome coverage and depth, while remaining cost- and time-efficient. Using human plasma collected from a 20-patient COVID-19 cohort, our method utilises commonly available solutions for depletion, sample preparation, and fractionation, followed by 3 LC-MS/MS injections for a 360-minutes DIA run time. DIA-NN software was then used for precursor identification, and the QFeatures R package was used for protein aggregation. We detect 1,321 proteins on average per patient, and 2,031 unique proteins across the cohort. Filtering precursors present in under 25% of patients, we still detect 1,230 average proteins and 1,590 unique proteins, indicating robust protein identification. Differential analysis further demonstrates the applicability of this method for plasma proteomic research and clinical biomarker identification. In summary, this study introduces a streamlined, cost- and time-effective approach to deep plasma proteome analysis, expanding its utility beyond classical research environments and enabling larger-scale multi-omics investigations in clinical settings.
  🖺 Full Text HTML: Deep plasma proteomics with data-independent acquisition: A fastlane towards biomarkers identification.
• The COVID-19 pandemic era impact on the incidence of the custodial death, due to illness in 36 states and union territories of India-A comparison study (2017–2022) -
  Abstract: Mahatma Gandhi said that “crime is due to diseased mind and jail should have an environment like hospitals for prisoner’s treatment and care”. A lot of research is carried out globally during COVID-19, on the well being of peoples staying outside the prisons, but very few large scale researches are available to know about the well being of the prisoners during COVID-19 era. The data is provided by the Prison Section of all the 36 States/UTs in prearranged Performa of the NCRB, through an application made by NCRB. A total of 11,289 custodial death occurred among the prisoners residing in various prisons of India, during the study period, out of which 9,406 (83.32 percent, Total-9406 (Obs-216, Mean-43.55, Std. Dev.- 68.87, Min-0, Max-401, Std. Err.- 4.69, 95% Conf. Interval of mean-34.31 -52.78) mortalities were attributed due to illness. Compared to year 2020, our study revealed that the COVID-19 year 2021 has attributed to largest (16.47 percent increased illness custodial death and 12.14 percent increased total mortalities) number of custodial death due to illness. The study revealed that during the study period, majority of the mortalities were due to heart diseases in prisoners (27.28 percent, Total-2566 (Obs-216, Mean-11.88, Std. Dev.- 19.30, Min-0, Max-123, Std. Err.- 1.31, 95% Conf. Interval of mean-9.29 -14.47). Cholera / Diarrhoea attributed to the least number of mortalities during the study period (0.21 percent, Total-20 (Obs-216, Mean-0.09, Std. Dev. - 0.40, Min-0, Max-4, Std. Err. - 0.03, 95% Conf. Interval of mean-.04 -.15). This six years of study revealed that most of the custodial death (42%), due to illness in prisoners of India was due to CVDs and pulmonary diseases. This study also revealed that 27% of custodial deaths due to illness were not clearly categorized. Honourable Justice Lokur, of Supreme Court of India, said in a landmark judgment, in 2013, that “The distinction made by the NCRB [National Crime Records Bureau] between natural and unnatural custodial deaths is not clear. For example, if a prisoner dies due to a lack of proper medical attention or timely medical attention, would that be classified as a natural custodial death or an unnatural custodial death?” The policymakers and decision-makers must think on the necessity of developing Prisoners care policies following the COVID-19 pandemic, in light of the findings of this research study.
  🖺 Full Text HTML: The COVID-19 pandemic era impact on the incidence of the custodial death, due to illness in 36 states and union territories of India-A comparison study (2017–2022)
• Who has the flu? Early winter 2023-24 spread of flu and COVID-19 -
  Winter 2023-24 has seen an unusual confluence of a variety of respiratory illnesses, ranging from flu to RSV (Respiratory Syncytial Virus) and COVID-19. Between December 21, 2023 and January 29, 2024, we surveyed 30,460 individuals aged 18 and older across all 50 states plus the District of Columbia. We asked them if they had experienced an Influenza-like Illness (ILI) defined as experiencing a fever and cough, or a fever and sore throat, and/or if they had been diagnosed with COVID-19, over the previous month. Amongst those who responded yes to such questions, we asked them whether or not they had sought medical attention. In this report, we summarize our findings across a variety of demographic subgroups, including age, race, education, income, gender, and geography.
  🖺 Full Text HTML: Who has the flu? Early winter 2023-24 spread of flu and COVID-19
• Prognostic factors for mortality, ICU, MIS-C and hospital admission due to SARS-CoV-2 in paediatric patients: A systematic review and meta-analysis -

  ABSTRACT Background: There is a paucity of data on the factors associated with severe COVID-19 disease, especially in children. This systematic review and meta-analysis aim to identify the risk factors for acute adverse outcomes of COVID-19 within paediatric populations, using the recruitment setting as a proxy of initial disease severity. Methods: A systematic review and meta-analysis were performed representing published evidence from the start of the pandemic up to 14 February 2022. Our primary outcome was the identification of risk factors for adverse outcomes, stratified by recruitment setting (community, hospital). No geographical restrictions were imposed. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) methodology was used to evaluate the certainty in the body of evidence for each meta-analysis. In anticipation of significant clinical and methodological heterogeneity in the meta-analyses, we fitted logistic regression models with random effects. Findings: Our review identified 47 studies involving 94,210 paediatric cases of COVID-19. Infants up to 3 months were more likely to be hospitalised than older children. Gender and ethnicity were not associated with an increased likelihood of adverse outcomes among children within the community setting. Concerning comorbidities, having at least one pre-existing disease increased the odds of hospitalisation. Concerning BMI, underweight children and severely obese were noted to have an increased likelihood of hospital admission. The presence of metabolic disorders and children with underlying cardiovascular diseases, respiratory disorders, neuromuscular disorders and neurologic conditions were also more likely to be hospitalised. Concerning underlying comorbidities, paediatric hospitalised patients with congenital/genetic disease, those obese, with malignancy, cardiovascular diseases and respiratory disease were associated with higher odds of being admitted to ICU or ventilated. Interpretation: Our findings suggest that age, male, gender, and paediatric comorbidities increased the likelihood of hospital and ICU admission. Obesity, malignancy, and respiratory and cardiovascular disorders were among the most important risk factors for hospital and ICU admission among children with COVID-19. The extent to which these factors were linked to actual severity or where the application of cautious preventive care is an area in which further research is needed.

  🖺 Full Text HTML: Prognostic factors for mortality, ICU, MIS-C and hospital admission due to SARS-CoV-2 in paediatric patients: A systematic review and meta-analysis
• Tixagevimab-cilgavimab (AZD7442) for the treatment of patients hospitalized with COVID-19 (DisCoVeRy): A phase 3, randomized, double-blind, placebo-controlled trial -

  Background Tixagevimab and cilgavimab (AZD7442) are two monoclonal antibodies developed by AstraZeneca for the pre-exposure prophylaxis and treatment of patients infected by SARS-CoV-2. Its effectiveness and safety in patients hospitalized with COVID-19 was not known at the outset of this trial. Methods DisCoVeRy is a phase 3, adaptive, multicentre, randomized, controlled trial conducted in 63 sites in Europe. Participants were randomly assigned (1:1) to receive placebo or tixagevimab-cilgavimab in addition to standard of care. The primary outcome was the clinical status at day 15 measured by the WHO seven-point ordinal scale. Several clinical, virological, immunological and safety endpoints were also assessed. Findings Due to slow enrolment, recruitment was stopped on July 1st, 2022. The antigen positive modified intention-to-treat population (mITT) was composed of 173 participants randomized to tixagevimab-cilgavimab (n=91) or placebo (n=82), 91.9% (159/173) with supplementary oxygen, and 47.4% (82/173) previously vaccinated at inclusion. There was no significant difference in the distribution of the WHO ordinal scale at day 15 between the two groups (odds ratio (OR) 0.93, 95%CI [0.54-1.61]; p=0.81) nor in any clinical, virological or safety secondary endpoints. In the global mITT (n=226), neutralization antibody titers were significantly higher in the tixagevimab-cilgavimab group/patients compared to placebo at day 3 (Least-square mean differences (LSMD) 1.44, 95% Confidence interval (CI) [1.20-1.68]; p < 10-23) and day 8 (LSMD 0.91, 95%CI [0.64-1.18]; p < 10-8) and it was most important for patients infected with a pre-omicron variant, both at day 3 (LSMD 1.94, 95% CI [1.67-2.20], p < 10-25) and day 8 (LSMD 1.17, 95% CI [0.87-1.47], p < 10-9), with a significant interaction (p < 10-7 and p=0.01 at days 3 and 8, respectively). Interpretation There were no significant differences between tixagevimab-cilgavimab and placebo in clinical endpoints, however the trial lacked power compared to prespecified calculations. Tixagevimab-cilgavimab was well tolerated, with low rates of treatment related events.

  🖺 Full Text HTML: Tixagevimab-cilgavimab (AZD7442) for the treatment of patients hospitalized with COVID-19 (DisCoVeRy): A phase 3, randomized, double-blind, placebo-controlled trial
• Global patterns of rebound to normal RSV dynamics following COVID-19 suppression -

  Introduction Annual epidemics of respiratory synctial virus (RSV) had consistent timing and intensity between seasons prior to the SARS-CoV-2 pandemic (COVID-19). However, starting in April 2020, RSV seasonal activity declined due to COVID-19 non-pharmaceutical interventions (NPIs) before re-emerging after relaxation of NPIs. We described the unusual patterns of RSV epidemics that occurred in multiple subsequent waves following COVID-19 in different countries and explored factors associated with these patterns. Methods Weekly cases of RSV from twenty-eight countries were obtained from the World Health Organisation and combined with data on country-level characteristics and the stringency of the COVID-19 response. Dynamic time warping and regression were used to describe epidemic characteristics, cluster time series patterns, and identify related factors. Results While the first wave of RSV epidemics following pandemic suppression exhibited unusual patterns, the second and third waves more closely resembled typical RSV patterns in many countries. Post-pandemic RSV patterns differed in their intensity and/or timing, with several broad patterns across the countries. The onset and peak timings of the first and second waves of RSV epidemics following COVID-19 suppression were earlier in the Southern Hemisphere. The second wave of RSV epidemics was also earlier with higher population density, and delayed if the intensity of the first wave was higher. More stringent NPIs were associated with lower RSV growth rate and intensity and a shorter gap between the first and second waves. Conclusion Patterns of RSV activity have largely returned to normal following successive waves in the post-pandemic era. Onset and peak timings of future epidemics following disruption of normal RSV dynamics need close monitoring to inform the delivery of preventive and control measures. Keywords: Respiratory synctial virus, epidemic onset, epidemic peak, epidemic rebound, dynamic time warping

  🖺 Full Text HTML: Global patterns of rebound to normal RSV dynamics following COVID-19 suppression
• A Population-Based Cross-Sectional Investigation of COVID-19 Hospitalizations and Mortality Among Autistic People -

  Background: Current evidence suggests the possibility that autistic people may be at more risk of COVID-19 infection, hospitalisation, and mortality than the general population. Previous studies, however, are either limited in scale or do not investigate potential risk factors. Whilst many risk factors have been speculated to be responsible for severe COVID-19, this research has focused on general population samples. Methods: Using data-linkage and a whole-country population, this study modelled associations between autism and COVID-19 hospitalisation and mortality risk in adults, investigating a multitude of clinical and demographic risk factors. Results: Autistic adults had higher rates of hospitalisation, Standardised Incident Ratio 1.6 in 2020 and 1.3 in 2021, and mortality, Standardised Mortality Ratio 1.52 in 2020 and 1.34 in 2021, due to COVID-19 than the general population. In both populations, age, complex multimorbidity and vaccination status were the most significant predictors of COVID-19 hospitalisation and mortality. Effects of psychotropic medication varied by class. Conclusions: Although similar factors exhibited a positive association with heightened risk of severe COVID-19 in both the autistic and general populations, with comparable effect sizes, mortality rates were elevated among the autistic population as compared to the general population. Specifically, the presence of complex multimorbidity and classification of prescribed medications may emerge as particularly significant predictors of severe COVID-19 among individuals within the autistic population due to higher prevalence of complex multimorbidity in the autistic population and variability in the association between medication classes and severe COVID-19 between both populations, though further research is needed.

  🖺 Full Text HTML: A Population-Based Cross-Sectional Investigation of COVID-19 Hospitalizations and Mortality Among Autistic People
• Changes in opioid prescribing during the COVID-19 pandemic in England: cohort study of 20 million patients in OpenSAFELY-TPP -

  Background: The COVID-19 pandemic led to disruptions in healthcare delivery, including postponement of elective procedures and difficulty accessing in-person care, which may have increased the need for strong pharmacological pain relief in some patients. Methods: With NHS England approval, we used routine clinical data from >20 million general practice adult patients in OpenSAFELY-TPP. We used interrupted time series analysis to quantify trends in prevalent and incident opioid prescribing prior to the pandemic (January 2018-February 2020) and changes during the COVID-19 lockdown period (March 2020-March 2021) and recovery period (April 2021-June 2022). We identified how these changes varied in people living in care homes, and by age, sex, deprivation, ethnicity, and geographic region. Results: The median number of people prescribed an opioid per month was 50.9 per 1000 patients prior to the pandemic. We observed little change in overall prescribing after the start of the pandemic, except for a temporary increase in March 2020. There was a 9.8% (95%CI -14.5%, -6.5%) reduction in new opioid prescribing from March 2020, sustained to the end of the study period. Reductions in new prescribing were observed for all demographics except people 80+ years. Among care home residents, in April 2020 new opioid prescribing increased by 112.5% (95%CI 92.2%, 134.9%) and parenteral opioid prescribing increased by 186.3% (95%CI 153.1%, 223.9%). Conclusion: Changes in opioid prescribing during the COVID-19 pandemic were mostly consistent across subgroups with the exception of differences by age and care home residence. Among people in care homes, increases in parenteral opioid prescribing likely reflect use to treat end-of-life COVID-19 symptoms. Further research is needed to understand what is driving the reduction in new opioid prescribing and its relation to changes to health care provision during the pandemic.

  🖺 Full Text HTML: Changes in opioid prescribing during the COVID-19 pandemic in England: cohort study of 20 million patients in OpenSAFELY-TPP
• Making a Case for an Autism-Specific Multimorbidity Index: A Comparative Cohort Study -

  Autistic people experience challenges in healthcare, including disparities in health outcomes and multimorbidity patterns distinct from the general population. This study investigated the efficacy of existing multimorbidity indices in predicting COVID-19 mortality among autistic adults and proposes a bespoke index, the ASD-MI, tailored to their specific health profile. Using data from the CVD-COVID-UK/COVID-IMPACT Consortium, encompassing England9s entire population, we identified 1,027 autistic adults hospitalized for COVID-19, among whom 62 died due to the virus. Employing logistic regression with 5-fold cross-validation, we selected diabetes, coronary heart disease, and thyroid disorders as predictors for the ASD-MI, outperforming the Quan Index, a general population-based measure, with an AUC of 0.872 versus 0.828, respectively. Notably, the ASD-MI exhibited better model fit (pseudo-R2 0.25) compared to the Quan Index (pseudo-R2 0.20). These findings underscore the need for tailored indices in predicting mortality risks among autistic individuals. However, caution is warranted in interpreting results, given the limited understanding of morbidity burden in this population. Further research is needed to refine autism-specific indices and elucidate the complex interplay between long-term conditions and mortality risk, informing targeted interventions to address health disparities in autistic adults. This study highlights the importance of developing healthcare tools tailored to the unique needs of neurodivergent populations to improve health outcomes and reduce disparities.

  🖺 Full Text HTML: Making a Case for an Autism-Specific Multimorbidity Index: A Comparative Cohort Study
• Thymidine Phosphorylase Mediates SARS-CoV-2 Spike Protein Enhanced Thrombosis in K18-hACE2TG Mice -
  COVID-19, caused by SARS-CoV-2, is associated with arterial and venous thrombosis, thereby increasing mortality. SARS-CoV-2 spike protein (SP), a viral envelope structural protein, is implicated in COVID-19-associated thrombosis. However, the underlying mechanisms remain unknown. Thymidine phosphorylase (TYMP), a newly identified prothrombotic protein, is upregulated in the plasma, platelets, and lungs of patients with COVID-19 but its role in COVID-19-associated thrombosis is not defined. In this study, we found that wild-type SARS-CoV-2 SP significantly promoted arterial thrombosis in K18-hACE2TG mice. SP-accelerated thrombosis was attenuated by inhibition or genetic ablation of TYMP. SP increased the expression of TYMP, resulting in the activation of signal transducer and activator of transcription 3 (STAT3) in BEAS-2B cells, a human bronchial epithelial cell line. A siRNA-mediated knockdown of TYMP inhibited SP-enhanced activation of STAT3. Platelets derived from SP-treated K18-hACE2TG mice also showed increased STAT3 activation, which was reduced by TYMP deficiency. Activated STAT3 is known to potentiate glycoprotein VI signaling in platelets. While SP did not influence ADP- or collagen-induced platelet aggregation, it significantly shortened activated partial thromboplastin time and this change was reversed by TYMP knockout. Additionally, platelet factor 4 (PF4) interacts with SP, which also complexes with TYMP. TYMP enhanced the formation of the SP/PF4 complex, which may potentially augment the prothrombotic and procoagulant effects of PF4. We conclude that SP upregulates TYMP expression, and TYMP inhibition or knockout mitigates SP-enhanced thrombosis. These findings indicate that inhibition of TYMP may be a novel therapeutic strategy for COVID-19-associated thrombosis.
  🖺 Full Text HTML: Thymidine Phosphorylase Mediates SARS-CoV-2 Spike Protein Enhanced Thrombosis in K18-hACE2TG Mice

From Clinical Trials

• Effectiveness of a Nasal Spray on Viral Respiratory Infections - Conditions: Acute Respiratory Tract Infection; Flu, Human; COVID-19; Common Cold
  Interventions: Device: Nasal Spray HSV Treatment
  Sponsors: CEN Biotech; Urgo Research, Innovation & Development
  Recruiting

• GS-441524 for COVID-19 SAD, FE, and MAD Study in Healthy Subjects - Conditions: COVID-19
  Interventions: Drug: GS-441524; Drug: Placebo
  Sponsors: National Center for Advancing Translational Sciences (NCATS); Leidos Biomedical Research, Inc.; ICON Government and Public Health Solutions, Inc
  Not yet recruiting

• The Aerobic Exercise Capacity and Muscle Strenght in Individuals With COVID-19 - Conditions: COVID-19 Pneumonia; COVID-19
  Interventions: Device: Kardiopulmonary exercise test (Quark KPET C12x/T12x device connected to the Omnia version 1.6.8 COSMED system); Device: Peripheral muscle strength measurement (microFET3 (Hoggan Health Industries, Fabrication Enterprises, lnc) and JAMAR hydraulic hand dynamometer (Sammons Preston, Rolyon, Bolingbrook).; Device: Standard exercise tolerance test (a bicycle ergometer and recorded through the ergoline rehabilitation system 2 Version 1.08 SPI.); Device: Aerobic exercise training (a bicycle ergometer and recorded through the ergoline rehabilitation system 2 Version 1.08 SPI.)
  Sponsors: Selda Sarıkaya; Zonguldak Bulent Ecevit University
  Completed

• UNAIR Inactivated COVID-19 Vaccine INAVAC as Heterologue Booster (Immunobridging Study) in Adolescent Subjects - Conditions: COVID-19 Pandemic; COVID-19 Vaccines
  Interventions: Biological: INAVAC (Vaksin Merah Putih - UA- SARS CoV-2 (Vero Cell Inactivated) 5 μg
  Sponsors: Dr. Soetomo General Hospital; Indonesia-MoH; Universitas Airlangga; PT Biotis Pharmaceuticals, Indonesia
  Active, not recruiting

• World Health Organization (WHO) , COVID19 Case Series of Post Covid 19 Rhino Orbito Cerebral Mucormycosis in Egypt - Conditions: Mucormycosis; Rhinocerebral (Etiology); COVID-19
  Interventions: Procedure: debridment
  Sponsors: Nasser Institute For Research and Treatment
  Completed

• Treatment of Post-COVID-19 With Hyperbaric Oxygen Therapy: a Randomized, Controlled Trial - Conditions: Post-COVID-19 Syndrome; Post-COVID Syndrome; Post COVID-19 Condition; Post-COVID Condition; Post COVID-19 Condition, Unspecified; Long COVID; Long Covid19
  Interventions: Drug: Hyperbaric oxygen
  Sponsors: Erasmus Medical Center; Da Vinci Clinic; HGC Rijswijk
  Not yet recruiting

• Mindfulness-based Mobile Applications Program - Conditions: COVID-19; Cell Phone Use; Nurse; Mental Health
  Interventions: Device: mindfulness-based mobile applications program
  Sponsors: Yu-Chien Huang
  Completed

• Attention Training for COVID-19 Related Distress - Conditions: Anxiety
  Interventions: Behavioral: Attention Bias Modification; Behavioral: Attention Control Training; Behavioral: Neutral training
  Sponsors: Palo Alto University
  Not yet recruiting

• Correlation of Antibody Response to COVID-19 Vaccination in Pregnant Woman and Transplacental Passage Into Cord Blood. - Conditions: Covid-19
  Interventions: Diagnostic Test: COVID-19 Spike Protein IgG Quantitative Antibody (CMIA)
  Sponsors: Vachira Phuket Hospital
  Recruiting

• UNAIR Inactivated COVID-19 Vaccine as Homologue Booster (Immunobridging Study) - Conditions: COVID-19 Pandemic; COVID-19 Vaccines; COVID-19 Virus Disease
  Interventions: Biological: INAVAC (Vaksin Merah Putih - UA- SARS CoV-2 (Vero Cell Inactivated) 5 μg
  Sponsors: Dr. Soetomo General Hospital; Universitas Airlangga; Biotis Pharmaceuticals, Indonesia; Indonesia-MoH
  Recruiting

• Safety and Immunogenicity of a Sub-unit Protein CD40.RBDv Bivalent COVID-19 Vaccine, Adjuvanted or Not, as a Booster in Volunteers. - Conditions: COVID-19
  Interventions: Drug: CD40.RBDv vaccin (SARS-Cov2 Vaccin)
  Sponsors: ANRS, Emerging Infectious Diseases; LinKinVax; Vaccine Research Institute (VRI), France
  Not yet recruiting

• High-definition Transcranial Direct Current Ctimulation and Chlorella Pyrenoidosa to Reduce Cardiovascular Risk - Conditions: Cardiovascular Diseases; Long Covid19
  Interventions: Other: High Definition-transcranial Direct Current Stimulation; Dietary Supplement: Chlorella Pyrenoidosa
  Sponsors: Federal University of Paraíba; City University of New York
  Recruiting

From PubMed

• Reduced interleukin-18 secretion by human monocytic cells in response to infections with hyper-virulent Streptococcus pyogenes - CONCLUSIONS: Our data demonstrate that strains, which harbor covR/S mutations, interfere with IL-18 and IL-8 responses in monocytic cells by utilizing the caspase-8 axis. Future experiments aim to identify the underlying mechanism and consequences for NSTI patients.

• Methyl rosmarinate is an allosteric inhibitor of SARS-cov-2 3 C L protease as a potential candidate against SARS-cov-2 infection - The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been ongoing for more than three years and urgently needs to be addressed. Traditional Chinese medicine (TCM) prescriptions have played an important role in the clinical treatment of patients with COVID-19 in China. However, it is difficult to uncover the potential molecular mechanisms of the active ingredients in these TCM prescriptions. In this paper, we developed a new…

• Human transferrin receptor can mediate SARS-CoV-2 infection - Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has been detected in almost all organs of coronavirus disease-19 patients, although some organs do not express angiotensin-converting enzyme-2 (ACE2), a known receptor of SARS-CoV-2, implying the presence of alternative receptors and/or co-receptors. Here, we show that the ubiquitously distributed human transferrin receptor (TfR), which binds to diferric transferrin to traffic between membrane and endosome for the iron…

• Polyvalent Nanobody Structure Designed for Boosting SARS-CoV-2 Inhibition - Coronavirus transmission and mutations have brought intensive challenges on pandemic control and disease treatment. Developing robust and versatile antiviral drugs for viral neutralization is highly desired. Here, we created a new polyvalent nanobody (Nb) structure that shows the effective inhibition of SARS-CoV-2 infections. Our polyvalent Nb structure, called “PNS”, is achieved by first conjugating single-stranded DNA (ssDNA) and the receptor-binding domain (RBD)-targeting Nb with retained…

• Efficacy of Host Cell Serine Protease Inhibitor MM3122 against SARS-CoV-2 for Treatment and Prevention of COVID-19 - We have developed a novel class of peptidomimetic inhibitors targeting several host cell human serine proteases including transmembrane protease serine 2 (TMPRSS2), matriptase and hepsin. TMPRSS2 is a membrane associated protease which is highly expressed in the upper and lower respiratory tract and is utilized by SARS-CoV-2 and other viruses to proteolytically process their glycoproteins, enabling host cell receptor binding, entry, replication, and dissemination of new virion particles. We have…

• Antimicrobial and Virus Adsorption Properties of Y-Zeolite Exchanged with Silver and Zinc Cations - The antimicrobial activity of silver and zinc exchanged cations in Y-zeolite (Ag/CBV-600, Zn/CBV-600) is evaluated against Staphylococcus aureus (gram (+)) and Escherichia coli (gram (-)) bacteria along with their adsorption capacity for viruses: brome mosaic virus (BMV), cowpea chlorotic mottle virus (CCMV), and the bacteriophage MS2. The physicochemical properties of synthesized nanomaterials are characterized by inductively coupled plasma optical emission spectroscopy (ICP-OES), UV-Vis…

• Diphenyl ethers from the cultured lichen mycobiont of Graphis handelii Zahlbr - CONCLUSION: A new compound, handelone (1) was isolated from the cultured mycobiont of Graphis handelii. From these compounds, four new derivatives were prepared. Compound 1 showed good activity against M^(pro) with an IC(50) value of 5.2 μM but it showed weak or inactive activity in other tests. Other compounds were inactive in all assays.

• Sialic Acid Conjugate-Modified Cationic Liposomal Paclitaxel for Targeted Therapy of Lung Metastasis in Breast Cancer: What a Difference the Cation Content Makes - Cationic lipids play a pivotal role in developing novel drug delivery systems for diverse biomedical applications, owing to the success of mRNA vaccines against COVID-19 and the Phase III antitumor agent EndoTAG-1. However, the therapeutic potential of these positively charged liposomes is limited by dose-dependent toxicity. While an increased content of cationic lipids in the formulation can enhance the uptake and cytotoxicity toward tumor-associated cells, it is crucial to balance these…

• Raman spectroscopy study of 7,8-dihydrofolate inhibition on the Wuhan strain SARS-CoV-2 binding to human ACE2 receptor - Emerging evidence suggests that elevated levels of folic acid in the bloodstream may confer protection against Wuhan-SARS-CoV-2 infection and mitigate its associated symptoms. Notably, two comprehensive studies of COVID-19 patients in Israel and UK uncovered a remarkable trend, wherein individuals with heightened folic acid levels exhibited only mild symptoms and necessitated no ventilatory support. In parallel, research has underscored the potential connection between decreased folic acid…

• Gut microbial co-metabolite 2-methylbutyrylcarnitine exacerbates thrombosis via binding to and activating integrin α2β1 - Thrombosis represents the leading cause of death and disability upon major adverse cardiovascular events (MACEs). Numerous pathological conditions such as COVID-19 and metabolic disorders can lead to a heightened thrombotic risk; however, the underlying mechanisms remain poorly understood. Our study illustrates that 2-methylbutyrylcarnitine (2MBC), a branched-chain acylcarnitine, is accumulated in patients with COVID-19 and in patients with MACEs. 2MBC enhances platelet hyperreactivity and…

• Sulfated Glycans Inhibit the Interaction of MERS-CoV Receptor Binding Domain with Heparin - Middle East respiratory syndrome coronavirus (MERS-CoV) is a zoonotic virus with high contagion and mortality rates. Heparan sulfate proteoglycans (HSPGs) are ubiquitously expressed on the surface of mammalian cells. Owing to its high negatively charged property, heparan sulfate (HS) on the surface of host cells is used by many viruses as cofactor to facilitate viral attachment and initiate cellular entry. Therefore, inhibition of the interaction between viruses and HS could be a promising…

• The Potential of Usnic-Acid-Based Thiazolo-Thiophenes as Inhibitors of the Main Protease of SARS-CoV-2 Viruses - Although the COVID-19 pandemic caused by SARS-CoV-2 viruses is officially over, the search for new effective agents with activity against a wide range of coronaviruses is still an important task for medical chemists and virologists. We synthesized a series of thiazolo-thiophenes based on (+)- and (-)-usnic acid and studied their ability to inhibit the main protease of SARS-CoV-2. Substances containing unsubstituted thiophene groups or methyl- or bromo-substituted thiophene moieties showed…

• Human Betacoronavirus OC43 Interferes with the Integrated Stress Response Pathway in Infected Cells - Viruses evolve many strategies to ensure the efficient synthesis of their proteins. One such strategy is the inhibition of the integrated stress response-the mechanism through which infected cells arrest translation through the phosphorylation of the alpha subunit of the eukaryotic translation initiation factor 2 (eIF2α). We have recently shown that the human common cold betacoronavirus OC43 actively inhibits eIF2α phosphorylation in response to sodium arsenite, a potent inducer of oxidative…

• Feasibility Study of Developing a Saline-Based Antiviral Nanoformulation Containing Lipid-Soluble EGCG: A Potential Nasal Drug to Treat Long COVID - CONCLUSION: Nanoformulations containing EC16 showed properties compatible with nasal application to rapidly inactivate SARS-CoV-2 residing in the olfactory mucosa and to reduce inflammation in the CNS, pending additional formulation and safety studies.

• Identification of SARS-CoV-2 Main Protease Inhibitors Using Chemical Similarity Analysis Combined with Machine Learning - SARS-CoV-2 Main Protease (Mpro) is an enzyme that cleaves viral polyproteins translated from the viral genome, which is critical for viral replication. Mpro is a target for anti-SARS-CoV-2 drug development. Herein, we performed a large-scale virtual screening by comparing multiple structural descriptors of reference molecules with reported anti-coronavirus activity against a library with >17 million compounds. Further filtering, performed by applying two machine learning algorithms, identified…

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