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<title>21 September, 2021</title>
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<title>Covid-19 Sentry</title><meta content="width=device-width, initial-scale=1.0" name="viewport"/><link href="styles/simple.css" rel="stylesheet"/><link href="../styles/simple.css" rel="stylesheet"/><link href="https://unpkg.com/aos@2.3.1/dist/aos.css" rel="stylesheet"/><script src="https://unpkg.com/aos@2.3.1/dist/aos.js"></script></head>
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<h1 data-aos="fade-down" id="covid-19-sentry">Covid-19 Sentry</h1>
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<h1 data-aos="fade-right" data-aos-anchor-placement="top-bottom" id="contents">Contents</h1>
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<ul>
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<li><a href="#from-preprints">From Preprints</a></li>
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<li><a href="#from-clinical-trials">From Clinical Trials</a></li>
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<li><a href="#from-pubmed">From PubMed</a></li>
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<li><a href="#from-patent-search">From Patent Search</a></li>
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<h1 data-aos="fade-right" id="from-preprints">From Preprints</h1>
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<li><strong>Blood biochemical parameters as predictors of disease severity and mortality in COVID-19 patients- an updated systematic review and meta-analysis</strong> -
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Background: The outbreak of coronavirus disease 2019 (COVID-19) has been rapidly spreading across the globe and poses a great risk to human health. Patients with abnormalities in laboratory parameters are more susceptible to COVID-19. Therefore, we explored the association of blood biochemical parameters with severity and mortality of COVID-19 amongst 3695 patients across seventeen studies. Methods: We searched PubMed, Cochrane library and LitCOVID database until February 28, 2021. Seventeen studies were included in the meta-analysis with 3695 COVID-19 patients. Results: The pooled analysis showed that compared to non-severe group, severe group was characterised by significantly elevated alanine aminotransferase (ALT) (standardised mean difference [SMD]: 0.65, 95% confidence interval [CI]: 0.23 to 1.06; p<0.001, erythrocyte sedimentation rate (ESR) (SMD: 0.55, 95%CI: 0.02 to 1.07 p=0.004) and lymphopenia (SMD: -1.22, 95% CI: -2.15 to -0.30; p<0.01), decreased serum albumin (SMD: -1.60, 95% CI: -2.96 to -0.22 ; p<0.001), creatinine (SMD: 0.54, 95% CI: 0.17 to 0.90; p<0.001), lactate dehydrogenase (LDH)(SMD: -1.54, 95% CI: -2.27 to -0.80; p=0.002) and haemoglobin (SMD:-0.89, 95% CI: ; p<0.001). Additionally, in the non-survivor group, elevated lactate dehydrogenase (LDH) (SMD: 1.54 95% CI: -2.27 to 0.80; p=0.002), decreased serum albumin (SMD: 1.08, 95% CI: 0.75 to 1.42; p<0.001) were reported. There was no comorbidity which was found to be significant in the severe group. Conclusion: Serum albumin, ALT, ESR, lymphopenia, haemoglobin, and leucocytosis can reflect the severity of COVID-19, while the LDH, leucocytosis and albumin can be considered as risk factor to higher mortality. Keywords: COVID-19, laboratory parameters, SARS-CoV-2, disease severity, mortality
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<div class="article-link article- html-link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.16.21263675v1" target="_blank">Blood biochemical parameters as predictors of disease severity and mortality in COVID-19 patients- an updated systematic review and meta-analysis</a>
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</div></li>
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<li><strong>Association of inflammatory markers with severity of disease and mortality in COVID-19 patients: a systematic review and meta-analysis</strong> -
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Purpose: Literature suggests association of inflammatory markers with the severity and mortality related to COVID-19, but there are varying conclusions available. We aimed to provide an overview of the association of inflammatory markers with the severity and mortality of COVID-19 patients. Methods: We searched Medline (via PubMed), Cochrane, Clinicaltrials.gov databases until Sept 1, 2020. Results: A total of 21 studies comprising 4023 patients with COVID-19 were included in our analysis. Levels of IL-6 (WMD=18.17 95%CI 3.38 to 32.96, p=0.016), IL-8 (WMD=12.09 95%CI 4.41 to 19.77, p=0.002), MCP-1 (WMD=146.66 95%CI 88.16 to 205.16, p<0.001), CRP (WMD=31.09 95%CI 10.08 to 52.10, p=0.004), PCT (WMD= -31.23 95%CI -37.70 to -24.76, p<0.001), IL-2R (WMD=861.93 95%CI 275.45 to 1448.41, p=0.004), ferritin (WMD= 1083.34 95%CI 431.99 to 1734.70, p=0.001) were found significantly higher in the severe group compared with the non-severe group of COVID-19 patients. Moreover, non-survivors had a higher levels of IL-2R (WMD= -666.06 95%CI -782.54 to -549.59, p<0.001), IL-8 (WMD= -26.63 95%CI -33.031 to -20.236, p<0.001), IL-10 (WMD= -7.60 95%CI -8.93 to -6.26, p<0.001), TNF-α (WMD= -4.60 95%CI -5.71 to -3.48, p<0.001), IL- 1β (WMD=22.66 95%CI 8.13 to 37.19, p=0.002), CRP (WMD= -96.40 95%CI -117.84 to -74.97, p<0.001), and ferritin (WMD= -937.60 95%CI -1084.15 to -791.065, p<0.001) when compared to the non-survivor group. Conclusion: This meta-analysis highlights the association of inflammatory markers with the severity and mortality of COVID-19 patients. Measurement of these inflammatory markers may assist clinicians to monitor and evaluate the severity and prognosis of COVID-19 thereby reducing the mortality rate. Keywords: inflammatory markers, cytokine storm, interleukin, disease severity, COVID-19
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</p>
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</div>
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<div class="article-link article-html- link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.16.21263678v1" target="_blank">Association of inflammatory markers with severity of disease and mortality in COVID-19 patients: a systematic review and meta-analysis</a>
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<li><strong>Protocol: A two-wave cross-sectional study in England investigating suicidal behaviour and self-harm amongst healthcare workers during the Covid-19 pandemic</strong> -
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Introduction There have been longstanding concerns regarding an increased risk of suicide amongst healthcare workers. The Covid-19 pandemic has placed an additional burden on staff, yet few studies have investigated the impact of the pandemic on their risk of suicide and self-harm. We aimed to investigate the cumulative incidence, prevalence and correlates of suicidal ideation, suicide attempts and non-suicidal self-injury amongst healthcare workers during the Covid-19 pandemic. Methods and Analysis NHS Check is an online survey that was distributed to all staff (clinical and non-clinical), students, and volunteers in 18 NHS Trusts across England during the Covid-19 pandemic. Data collected in wave 1 (collected between April 2020 and January 2021) and wave 2 (collected 6-month after wave 1) will be analysed. The full cohort of wave 1 participants will be weighted to represent the age, sex, ethnicity, and roles profile of the workforce at each Trust, and the weighted prevalence and cumulative incidence of suicidal ideation, suicide attempts and non-suicidal self-injury will be described. Two-level random effects logistic regression models will be used to investigate the relationship between suicidal behaviour and self-harm, and demographic characteristics (age, sex, ethnicity) and workplace factors (concerns regarding access to personal protective equipment, re-deployment status, moral injury, confidence around raising and the management of safety concerns, support by supervisors or managers, satisfaction with standard of care provided). Results will be stratified by role (clinical/non-clinical).
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</p>
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.16.21263255v1" target="_blank">Protocol: A two-wave cross- sectional study in England investigating suicidal behaviour and self-harm amongst healthcare workers during the Covid-19 pandemic</a>
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</div></li>
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<li><strong>Characterisation of the blood RNA host response underpinning severity in COVID-19 patients</strong> -
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Infection with SARS-CoV-2 has highly variable clinical manifestations, ranging from asymptomatic infection through to life-threatening disease. Host whole blood transcriptomics can offer unique insights into the biological processes underpinning infection and disease, as well as severity. We performed whole blood RNA Sequencing of individuals with varying degrees of COVID-19 severity. We used differential expression analysis and pathway enrichment analysis to explore how the blood transcriptome differs between individuals with mild, moderate, and severe COVID-19, performing pairwise comparisons between groups. Increasing COVID-19 severity was characterised by an abundance of inflammatory immune response genes and pathways, including many related to neutrophils and macrophages, in addition to an upregulation of immunoglobulin genes. Our insights into COVID-19 severity reveal the role of immune dysregulation in the progression to severe disease and highlight the need for further research exploring the interplay between SARS-CoV-2 and the inflammatory immune response.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.16.21263170v1" target="_blank">Characterisation of the blood RNA host response underpinning severity in COVID-19 patients</a>
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<li><strong>Psychological Factors Shaping Public Responses to COVID-19 Digital Contact Tracing Technologies in Germany</strong> -
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Please cite the published version: Kozyreva, A., Lorenz-Spreen, P., Lewandowsky, S. et al. Psychological factors shaping public responses to COVID-19 digital contact tracing technologies in Germany. Sci Rep 11, 18716 (2021). https://doi.org/10.1038/s41598-021-98249-5 Abstract: Digital contact-tracing technologies are being used for epidemiological purposes at scale for the first time in response to the COVID-19 pandemic. This poses challenges for governments aiming at high and efficient uptake and for people weighing the advantages (e.g., public health) against the potential risks (e.g., loss of data privacy) of these unprecedented measures. Our cross-sectional survey with repeated measures across four samples in Germany (N = 4,357) focused on public perceptions of digital contact-tracing technologies and related attitudes toward privacy. We found that public acceptance of potential privacy-encroaching measures decreased over time. Levels of acceptability were high for all three hypothetical tracking apps representing a range of privacy encroachments. Intentions to download the actual tracking app (the Corona-Warn-App) that became available during our study were also high. However, this did not directly translate into actual uptake. Our results point to the crucial roles of trust in government and in the app’s security, as well as of concerns about the app’s effectiveness. A conflict between prosocial intentions and personal benefit on the one hand, and lack of trust in data security and the app’s effectiveness on the other, are at the heart of people’s decisions about whether to use digital contact-tracing technologies.
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://psyarxiv.com/3x4ru/" target="_blank">Psychological Factors Shaping Public Responses to COVID-19 Digital Contact Tracing Technologies in Germany</a>
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<li><strong>The supramolecular organization of SARS-CoV and SARS-CoV-2 virions revealed by coarse-grained models of intact virus envelopes</strong> -
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The coronavirus disease 19 (COVID-19) pandemic is causing a global health crisis and has already caused a devastating societal and economic burden. The pathogen, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has a high sequence and architecture identity with SARS-CoV, but far more people have been infected by SARS-CoV-2. Here, combining structural data from cryo-EM and structure prediction, we constructed bottom-up Martini coarse-grained models of intact SARS-CoV and SARS-CoV-2 envelopes. Microsecond molecular dynamics simulations were performed, allowing us to explore their dynamics and supramolecular organization. Both SARS-CoV and SARS-CoV-2 envelopes present a spherical morphology with structural proteins forming multiple string-like islands in the membrane and clusters between heads of spike proteins. Critical differences between the SARS-CoV and SARS-CoV-2 envelopes are the interaction pattern between spike proteins and the flexibility of spike proteins. Our models provide structural and dynamic insights in the SARS virus envelopes, and could be used for further investigation, such as drug design, and fusion and fission processes.
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</div>
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.09.16.460716v1" target="_blank">The supramolecular organization of SARS-CoV and SARS-CoV-2 virions revealed by coarse-grained models of intact virus envelopes</a>
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<li><strong>Impact of multiple sclerosis disease-modifying therapies on SARS-CoV-2 vaccine-induced antibody and T cell immunity</strong> -
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Vaccine-elicited adaptive immunity is an essential prerequisite for effective prevention and control of coronavirus 19 (COVID-19). Treatment of multiple sclerosis (MS) involves a diverse array of disease-modifying therapies (DMTs) that target antibody and cell-mediated immunity, yet a comprehensive understanding of how MS DMTs impact SARS- CoV-2 vaccine responses is lacking. We completed a detailed analysis of SARS-CoV-2 vaccine-elicited spike antigen- specific IgG and T cell responses in a cohort of healthy controls and MS participants in six different treatment categories. Two specific DMT types, sphingosine-1-phosphate (S1P) receptor modulators and anti-CD20 monoclonal antibodies (mAb), resulted in significantly reduced spike-specific IgG responses. Longer duration of anti-CD20 mAb treatment prior to SARS-CoV-2 vaccination were associated with absent antibody responses. Except for reduced CD4+ T cell responses in S1P-treated patients, spike-specific CD4+ and CD8+ T cell reactivity remained robust across all MS treatment types. These findings have important implications for clinical practice guidelines and vaccination recommendations in MS patients and other immunosuppressed populations.
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</p>
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<div class="article-link article-html- link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.10.21262933v1" target="_blank">Impact of multiple sclerosis disease-modifying therapies on SARS-CoV-2 vaccine-induced antibody and T cell immunity</a>
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</div></li>
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<li><strong>A Genotype-to-Phenotype Modeling Framework to Predict Human Pathogenicity of Novel Coronaviruses</strong> -
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Leveraging prior viral genome sequencing data to make predictions on whether an unknown, emergent virus harbors a phenotype-of-concern has been a long-sought goal of genomic epidemiology. A predictive phenotype model built from nucleotide-level information alone has previously been considered un-tenable with respect to RNA viruses due to the ultra-high intra-sequence variance of their genomes, even within closely related clades. Building from our prior work developing a degenerate k-mer method to accommodate this high intra-sequence variation of RNA virus genomes for modeling frameworks, and leveraging a taxonomic group-shuffle-split paradigm on complete coronavirus assemblies from prior to October 2018, we trained multiple regularized logistic regression classifiers at the nucleotide k-mer level capable of accurately predicting withheld SARS-CoV-2 genome sequences as human pathogens and accurately predicting withheld Swine Acute Diarrhea Syndrome coronavirus (SADS-CoV) genome sequences as non-human pathogens. LASSO feature selection identified several degenerate nucleotide predictor motifs with high model coefficients for the human pathogen class that were present across widely disparate classes of coronaviruses. However, these motifs differed in which genes they were present in, what specific codons were used to encode them, and what the translated amino acid motif was. This emphasizes the importance of a phenetic view of emerging pathogenic RNA viruses, as opposed to the canonical phylogenetic interpretations most-commonly used to track and manage viral zoonoses. Applying our model to more recent Orthocoronavirinae genomes deposited since October 2018 yields a novel contextual view of pathogen-potential across bat- related, canine-related, porcine-related, and rodent-related coronaviruses and critical adaptations which may have contributed to the emergence of the pandemic SARS-CoV-2 virus. Finally, we discuss the utility of these predictive models (and their associated predictor motifs) to novel biosurveillance protocols that substantially increase the pound- for-pound information content of field-collected sequencing data and make a strong argument for the necessity of routine collection and sequencing of zoonotic viruses.
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.09.18.460926v1" target="_blank">A Genotype-to-Phenotype Modeling Framework to Predict Human Pathogenicity of Novel Coronaviruses</a>
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<li><strong>Environmental factors and mobility predict COVID-19 seasonality</strong> -
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Background: We recently showed that seasonal patterns of COVID-19 incidence and Influenza-Like Illnesses incidence are highly similar, in a country in the temperate climate zone, such as the Netherlands (latitude: 52oN). We hypothesize that in The Netherlands the same environmental factors and mobility trends that are associated with the seasonality of flu-like illnesses are predictors of COVID-19 seasonality as well. Methods: We used meteorological, pollen/hay fever and mobility data from the Netherlands with its 17.4 million inhabitants. For the reproduction number of COVID-19 (Rt), we used data from the Dutch State Institute for Public Health. This Rt metric is a daily estimate that is based on positive COVID-19 tests in the Netherlands in hospitals and municipalities. For all datasets we selected the overlapping period of COVID-19 and the first allergy season: from February 17, 2020 till September 21, 2020 (total number of measurements: n = 218), the end of pollen season. Backward stepwise multiple linear regression was used to develop an environmental prediction model of the Rt of COVID-19. Next, we studied whether adding mobility trends to an environmental model improved the predictive power. Results: By means of stepwise backward multiple linear regression four highly significant (p value < 0.01) predictive factors are selected in our combined model: temperature, solar radiation, hay fever incidence, and mobility to indoor recreation locations. Our combined model explains 87.5% of the variance of Rt of COVID-19 and has a good and highly significant fit: F(4, 213) = 374.2, p-value < 0.00001. The combined model had a better overall predictive performance compared to a solely environmental model, which still explains 77.3% of the variance of Rt, and a good and highly significant fit: F(4, 213) = 181.3, p < 0.00001. Conclusions: We conclude that the combined mobility and environmental model can adequately predict the seasonality of COVID-19 in a country with a temperate climate like the Netherlands. In this model higher solar radiation, higher temperature and hay fever are related to lower COVID-19 reproduction, and mobility to indoor recreation locations with increased COVID-19 spread.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.15.21263648v1" target="_blank">Environmental factors and mobility predict COVID-19 seasonality</a>
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<li><strong>SARS-CoV-2 variants in Paraguay: Detection and surveillance with a readily modifiable, multiplex real-time RT-PCR</strong> -
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Objectives The objective of the current study was to develop a lower-cost and scalable protocol to identify and monitor SARS-CoV-2 variants in Paraguay by pairing real-time RT-PCR detection of spike mutations with amplicon Sanger sequencing and whole-genome Nanopore sequencing. Methods 201 acute-phase nasopharyngeal samples from SARS-CoV-2-positive individuals were tested with two rRT-PCRs: 1) N2RP assay to confirm SARS-CoV-2 RNA detection (CDC N2 target), and 2) the Spike SNP assay to detect mutations in the spike receptor binding domain. The assay was performed with probes to identify mutations associated with the following variants: alpha (501Y), beta/gamma (417variant/484K/501Y), delta (452R/478K), and lambda (452Q/490S). Results All samples were positive for SARS-CoV-2 in the N2RP assay (mean Ct, 20.8; SD 5.6); 198/201 (98.5%) tested positive in the Spike SNP assay. The most common genotype was 417variant/484K/501Y, detected in 102/198 samples (51.5%) and most consistent with P.1 lineage (gamma variant) in Paraguay. No mutations (K417 only) were found in 64/198 (32.3%); and K417/484K was identified in 22/198 (11.1%), consistent with P.2 (zeta). Seven samples (3.5%) tested positive for 452R without 478K, and one sample with genotype K417/501Y was confirmed as B.1.1.7 (alpha). Results were confirmed by Sanger sequencing in 181/181 samples (100%) with high-quality amplicon sequences, and variant calls were consistent with Nanopore sequencing in 29/29 samples. Conclusions The Spike SNP assay provides accurate detection of mutations associated with SARS-CoV-2 variants. This can be implemented in laboratories performing rRT-PCR to improve population-level surveillance for these mutations and inform the judicious use of scarce sequencing resources.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.15.21263618v1" target="_blank">SARS-CoV-2 variants in Paraguay: Detection and surveillance with a readily modifiable, multiplex real-time RT-PCR</a>
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<li><strong>Analysis of the upper respiratory tract microbiota in mild and severe COVID-19 patients</strong> -
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The microbiota of the respiratory tract remains a relatively poorly studied subject. At the same time, like the intestinal microbiota, it is involved in modulating the immune response to infectious agents in the host organism. A causal relationship between the composition of the respiratory microbiota and the likelihood of development and the severity of COVID-19 may be hypothesized. We analyze biomaterial from nasopharyngeal smears from 336 patients with a confirmed diagnosis of COVID-19, selected during the first and second waves of the epidemic in Russia. Sequences from a similar study conducted in Spain were also included in the analysis. We investigated associations between disease severity and microbiota at the level of microbial community (community types) and individual microbes (differentially represented species). To search for associations, we performed multivariate analysis, taking into account comorbidities, type of community and lineage of the virus. We found that two out of six community types are associated with a more severe course of the disease, and one of the community types is characterized by high stability (very similar microbiota profiles in different patients) and low level of lung damage. Differential abundance analysis with respect to comorbidities and community type suggested association of Rothia and Streptococcus genera representatives with more severe lung damage, and Leptotrichia, unclassified Lachnospiraceae and Prevotella with milder forms of the disease.
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🖺 Full Text HTML: <a href="https://www.biorxiv.org/content/10.1101/2021.09.20.461025v1" target="_blank">Analysis of the upper respiratory tract microbiota in mild and severe COVID-19 patients</a>
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<li><strong>Evolution of COVID-19 mortality over time: results from the Swiss hospital surveillance system (CH-SUR)</strong> -
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Background: When comparing the periods of time during and after the first wave of the ongoing SARS- CoV-2/COVID-19 pandemic in Europe, the associated COVID-19 mortality seems to have decreased substantially. Various factors could explain this trend, including changes in demographic characteristics of infected persons, and the improvement of case management. To date, no study has been performed to investigate the evolution of COVID-19 in- hospital mortality in Switzerland, while also accounting for risk factors. Methods: We investigated the trends in COVID-19 related mortality (in-hospital and in-intermediate/intensive-care) over time in Switzerland, from February 2020 to May 2021, comparing in particular the first and the second wave. We used data from the COVID-19 Hospital-based Surveillance (CH-SUR) database. We performed survival analyses adjusting for well-known risk factors of COVID-19 mortality (age, sex and comorbidities) and accounting for competing risk. Results: Our analysis included 16,030 episodes recorded in CH-SUR, with 2,320 reported deaths due to COVID-19 (13.0% of included episodes). We found that overall in- hospital mortality was lower during the second wave of COVID-19 compared to the first wave (HR 0.71, 95% CI 0.69 - 0.72, p-value < 0.001), a decrease apparently not explained by changes in demographic characteristics of patients. In contrast, mortality in intermediate and intensive care significantly increased in the second wave compared to the first wave (HR 1.48, 95% CI 1.42 - 1.55, p-value < 0.001), with significant changes in the course of hospitalisation between the first and the second wave. Conclusion: We found that, in Switzerland, COVID-19 mortality decreased among hospitalised persons, whereas it increased among patients admitted to intermediate or intensive care, when comparing the second wave to the first wave. We put our findings in perspective with changes over time in case management, treatment strategy, hospital burden and non-pharmaceutical interventions. Further analyses of the potential effect of virus variants and of vaccination on mortality would be crucial to have a complete overview of COVID-19 mortality trends throughout the different phases of the pandemic.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.14.21263153v1" target="_blank">Evolution of COVID-19 mortality over time: results from the Swiss hospital surveillance system (CH-SUR)</a>
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<li><strong>Spatiotemporal analyses illuminate the competitive advantage of a SARS-CoV-2 variant of concern over a variant of interest</strong> -
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The emergence of novel SARS-CoV-2 variants in late 2020 and early 2021 raised alarm worldwide and prompted reassessment of the management, surveillance, and projected future of COVID-19. Mutations that confer competitive advantages by increasing transmissibility or immune evasion have been associated with the localized dominance of single variants. Thus, elucidating the evolutionary and epidemiological dynamics among novel variants is essential for understanding the trajectory of the COVID-19 pandemic. Here we show the interplay between B.1.1.7 (Alpha) and B.1.526 (Iota) in New York (NY) from December 2020 to April 2021 through phylogeographic analyses, space-time scan statistics, and cartographic visualization. Our results indicate that B.1.526 likely evolved in the Bronx in late 2020, providing opportunity for an initial foothold in the heavily interconnected New York City (NYC) region, as evidenced by numerous exportations to surrounding locations. In contrast, B.1.1.7 became dominant in regions of upstate NY where B.1.526 had limited presence, suggesting that B.1.1.7 was able to spread more efficiently in the absence of B.1.526. Clusters discovered from the spatial-time scan analysis supported the role of competition between B.1.526 and B.1.1.7 in NYC in March 2021 and the outsized presence of B.1.1.7 in upstate NY in April 2021. Although B.1.526 likely delayed the rise of B.1.1.7 in NYC, B.1.1.7 became the dominant variant in the Metro region by the end of the study period. These results reveal the advantages endemicity may grant to a variant (founder effect), despite the higher fitness of an introduced lineage. Our research highlights the dynamics of inter-variant competition at a time when B.1.617.2 (Delta) is overtaking B.1.1.7 as the dominant lineage worldwide. We believe our combined spatiotemporal methodologies can disentangle the complexities of shifting SARS-CoV-2 variant landscapes at a time when the evolution of variants with additional fitness advantages is impending.
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.14.21262977v1" target="_blank">Spatiotemporal analyses illuminate the competitive advantage of a SARS-CoV-2 variant of concern over a variant of interest</a>
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</div></li>
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<li><strong>Quantitative measurement of infectious virus in SARS-CoV-2 Alpha, Delta and Epsilon variants reveals higher infectivity (viral titer:RNA ratio) in clinical samples containing the Delta and Epsilon variants.</strong> -
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ABSTRACT Background Novel SARS-CoV-2 Variants of Concern (VoC) pose a challenge to controlling the COVID-19 pandemic. Previous studies indicate that clinical samples collected from individuals infected with the Delta variant may contain higher levels of RNA than previous variants, but the relationship between viral RNA and infectious virus for individual variants is unknown. Methods We measured infectious viral titer (using a micro-focus forming assay) as well as total and subgenomic viral RNA levels (using RT-PCR) in a set of 165 clinical samples containing SARS-CoV-2 Alpha, Delta and Epsilon variants that were processed within two days of collection from the patient. Results We observed a high degree of variation in the relationship between viral titers and RNA levels. Despite the variability we observed for individual samples the overall infectivity differed among the three variants. Both Delta and Epsilon had significantly higher infectivity than Alpha, as measured by the number of infectious units per quantity of viral E gene RNA (6 and 4 times as much, p=0.0002 and 0.009 respectively) or subgenomic E RNA (11 and 7 times as much, p<0.0001 and 0.006 respectively). Conclusion In addition to higher viral RNA levels reported for the Delta variant, the infectivity (amount of replication competent virus per viral genome copy) may also be increased compared to Alpha. Measuring the relationship between live virus and viral RNA is an important step in assessing the infectivity of novel SARS-CoV-2 variants. An increase in the infectivity of the Delta variant may further explain increased spread and suggests a need for increased measures to prevent viral transmission.
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</p>
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</div>
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.07.21263229v1" target="_blank">Quantitative measurement of infectious virus in SARS-CoV-2 Alpha, Delta and Epsilon variants reveals higher infectivity (viral titer:RNA ratio) in clinical samples containing the Delta and Epsilon variants.</a>
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</div></li>
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<li><strong>Self-reported and physiological reactions to the third BNT162b2 mRNA COVID-19 (booster) vaccine dose</strong> -
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Background: The rapid rise in hospitalizations associated with the Delta-driven COVID-19 resurgence, and the imminent risk of hospital overcrowding, led the Israeli government to initialize a national third (booster) COVID-19 vaccination campaign in early August 2021, offering the BNT162b2 mRNA vaccine to individuals who received their second dose over five months ago. However, the safety of the third (booster) dose has not been fully established yet. Objective: Evaluate the short-term, self-reported and physiological reactions to the third BNT162b2 mRNA COVID-19 (booster) vaccine dose. Design: A prospective observational study, in which participants are equipped with a smartwatch and fill in a daily questionnaire via a dedicated mobile application for a period of 21 days, starting seven days before the vaccination. Setting: An Israel-wide third (booster) vaccination campaign. Participants: A group of 1503 (18+ years of age) recipients of at least one dose of the BNT162b2 vaccine between December 20, 2020, and September 6, 2021, out of a larger cohort of 2,848 prospective study participants. 1,231 of the participants were recipients of the third vaccine dose. Measurements: Daily self-reported questionnaires regarding local and systemic reactions, mood level, stress level, sport duration, and sleep quality. Heart rate and heart rate variability were continuously measured by Garmin Vivosmart 4 smartwatches. Results: Local and systemic reactions reported following the third (booster) dose administration are similar to those reported following the second dose and considerably greater than those reported following the first dose. Our analyses of self-reported well-being indicators as well as the objective heart rate and heart rate variability measures recorded by the smartwatches further support this finding. These measures returned to their baseline levels within three days from inoculation with the third dose. These trends were consistent regardless of age, gender or the existence of an underlying medical condition. Limitations: Participants may not adequately represent the vaccinated population in Israel and elsewhere. Conclusion: Our work further supports the safety of a third COVID-19 BNT162b2 mRNA (booster) vaccine dose from both a subjective and an objective perspective. Primary funding source: European Research Council (ERC) project #949850.
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</div>
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<div class="article-link article-html-link">
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🖺 Full Text HTML: <a href="https://www.medrxiv.org/content/10.1101/2021.09.15.21263633v1" target="_blank">Self-reported and physiological reactions to the third BNT162b2 mRNA COVID-19 (booster) vaccine dose</a>
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</div></li>
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</ul>
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<h1 data-aos="fade-right" id="from-clinical-trials">From Clinical Trials</h1>
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<ul>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Finding Treatments for COVID-19: A Trial of Antiviral Pharmacodynamics in Early Symptomatic COVID-19 (PLATCOV)</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Drug: Favipiravir; Drug: Monoclonal antibodies; Drug: Ivermectin; Other: No treatment; Drug: Remdesivir<br/><b>Sponsor</b>: University of Oxford<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Safety and Immunogenicity Study of AdCLD-CoV19-1: A COVID-19 Preventive Vaccine in Healthy Volunteers</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Biological: AdCLD-CoV19-1<br/><b>Sponsor</b>: <br/>
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Cellid Co., Ltd.<br/><b>Recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A Post-Exposure Prophylaxis Study of PF-07321332/Ritonavir in Adult Household Contacts of an Individual With Symptomatic COVID-19</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Drug: PF-07321332; Drug: Placebo for PF-07321332; Drug: Placebo for Ritonavir; Drug: Ritonavir<br/><b>Sponsor</b>: Pfizer<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Factors Influencing the COVID-19 Vaccine Immune Response According to Age and Presence or Not of a Past History of COVID-19</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Biological: COVID-19 vaccine Pfizer (2 doses); Biological: COVID-19 vaccine Pfizer (1 dose); Biological: COVID-19 mRNA Vaccine Moderna (2 doses); Biological: COVID-19 mRNA Vaccine Moderna (1 dose)<br/><b>Sponsors</b>: Centre Hospitalier Universitaire de Saint Etienne; Sanofi Pasteur, a Sanofi Company; Bioaster<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>COVID-19 Morbidity in Healthcare Workers and Vitamin D Supplementation</strong> - <b>Condition</b>: COVID-19 Respiratory Infection<br/><b>Intervention</b>: Drug: Vitamin D<br/><b>Sponsor</b>: Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health<br/><b>Completed</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>TThe Safety and Efficacy of SCTV01C in Population Aged ≥18 Years Previously Vaccinated With Inactivated COVID-19 Vaccine.Healthy Population Aged ≥18 Years Previously Vaccinated With Inactivated COVID-19 Vaccine.</strong> - <b>Conditions</b>: COVID-19; SARS-CoV-2 Infection<br/><b>Interventions</b>: Biological: SCTV01C; Other: Placebo<br/><b>Sponsor</b>: Sinocelltech Ltd.<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>The Safety and Efficacy of SCTV01C in Population Aged ≥18 Years Previously Vaccinated With Inactivated COVID-19 Vaccine.Healthy Population Aged ≥18 Years Previously Vaccinated With Adenovirus Vectored or mRNA COVID-19 Vaccine.</strong> - <b>Conditions</b>: COVID-19; SARS-CoV-2 Infection<br/><b>Interventions</b>: Biological: SCTV01C; Other: Placebo<br/><b>Sponsor</b>: Sinocelltech Ltd.<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Heterologous Prime-boost Immunization With an Aerosolised Adenovirus Type-5 Vector-based COVID-19 Vaccine (Ad5-nCoV) After Priming With an Inactivated SARS-CoV-2 Vaccine</strong> - <b>Condition</b>: COVID-19<br/><b>Interventions</b>: Biological: inactive SARS-CoV-2 vaccine (Vero cell); Biological: Low dose aerosolized Ad5-nCoV; Biological: High dose aerosolized Ad5-nCoV<br/><b>Sponsor</b>: Jiangsu Province Centers for Disease Control and Prevention<br/><b>Recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Text Message Nudges for COVID-19 Vaccination</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Behavioral: Text message<br/><b>Sponsor</b>: <br/>
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Ascension South East Michigan<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A Pilot Study of a PhysiOthErapy-based Tailored Intervention for Long Covid</strong> - <b>Condition</b>: COVID-19<br/><b>Intervention</b>: Behavioral: Physiotherapy<br/><b>Sponsors</b>: <br/>
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University of Calgary; Alberta Health Services<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Combined Antihistaminics Therapy in COVID 19 Patients</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Drug: Loratadine; Drug: Famotidine<br/><b>Sponsors</b>: Ain Shams University; Nasr City Insurance Hospital<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Relate to the Virus That Causes COVID-19, Known as Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2)</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Other: Rapid antigen testing kit<br/><b>Sponsors</b>: <br/>
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Mahidol University; Yuvabadhana foundation; Zero COVID Thailand<br/><b>Not yet recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Prevention and Treatment of Patient Before, During, and After Covid-19 Infection</strong> - <b>Condition</b>: Covid19<br/><b>Intervention</b>: Drug: AntiCov-220<br/><b>Sponsor</b>: <br/>
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Nguyen Thi Trieu, MD<br/><b>Active, not recruiting</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Quercetin in the Prevention of Covid-19 Infection</strong> - <b>Condition</b>: Covid19<br/><b>Interventions</b>: Dietary Supplement: Quercetin; Combination Product: Placebo<br/><b>Sponsor</b>: Azienda di Servizi alla Persona di Pavia<br/><b>Completed</b></p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Third Dose Vaccination With AstraZeneca or Pfizer COVID-19 Vaccine Among Adults Received Sinovac COVID-19 Vaccine</strong> - <b>Conditions</b>: COVID-19 Infection; COVID-19 VACCINE<br/><b>Interventions</b>: Biological: AstraZeneca ChAdOx1 AZD1222 vaccine (AZ) full dose; Biological: Pfizer/BioNTech BNT162b2 vaccine (PF) full dose; Biological: AstraZeneca ChAdOx1 AZD1222 vaccine (AZ) half dose; Biological: Pfizer/BioNTech BNT162b2 vaccine (PF) half dose<br/><b>Sponsors</b>: Mahidol University; Clinixir Co., Ltd.; Program Management Unit-C (PMU-C), governed by Ministry of Higher Education, Science, Research and Innovation (MHESI)<br/><b>Not yet recruiting</b></p></li>
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</ul>
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<h1 data-aos="fade-right" id="from-pubmed">From PubMed</h1>
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<ul>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Multi-level inhibition of coronavirus replication by chemical ER stress</strong> - Coronaviruses (CoVs) are important human pathogens for which no specific treatment is available. Here, we provide evidence that pharmacological reprogramming of ER stress pathways can be exploited to suppress CoV replication. The ER stress inducer thapsigargin efficiently inhibits coronavirus (HCoV-229E, MERS-CoV, SARS-CoV-2) replication in different cell types including primary differentiated human bronchial epithelial cells, (partially) reverses the virus-induced translational shut-down,…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>22-Hydroxyhopane, a novel multitargeted phytocompound against SARS-CoV-2 from Adiantum latifolium Lam</strong> - The present pandemic disease COVID-19 demands an urgent need for more efficient antiviral drugs against SARS-CoV-2. 22-Hydroxyhopane is a bioactive triterpenoid compound with antibacterial activity, present in the leaves of Adiantum latifolium. In this study, molecular docking method revealed strong binding affinity of the compound for ten proteins essential for SARS-CoV-2 multiplication in host cells, including seven nonstructural proteins, two structural proteins and one receptor protein, with…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>SARS-CoV-2 Nsp5 Demonstrates Two Distinct Mechanisms Targeting RIG-I and MAVS To Evade the Innate Immune Response</strong> - Newly emerged severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) caused a global pandemic with astonishing mortality and morbidity. The high replication and transmission of SARS-CoV-2 are remarkably distinct from those of previous closely related coronaviruses, and the underlying molecular mechanisms remain unclear. The innate immune defense is a physical barrier that restricts viral replication. We report here that the SARS-CoV-2 Nsp5 main protease targets RIG-I and mitochondrial…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Arginine vasopressin and pathophysiology of COVID-19: An innovative perspective</strong> - In Covid-19, systemic disturbances may progress due to development of cytokine storm and dysregulation of and plasma osmolarility due to high release of pro-inflammatory cytokines and neuro-hormonal disorders. Arginine vasopressin (AVP) which is involve in the regulation of body osmotic system, body water content, blood pressure and plasma volume, that are highly disturbed in Covid-19 and linked with poor clinical outcomes. Therefore, this present study aimed to find the potential association…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Enzyme inhibition as a potential therapeutic strategy to treat COVID-19 infection</strong> - With the emergence of the third infectious and virulent coronavirus within the past two decades, it has become increasingly important to understand how the virus causes infection. This will inform therapeutic strategies that target vulnerabilities in the vital processes through which the virus enters cells. This review identifies enzymes responsible for SARS-CoV-2 viral entry into cells (ACE2, Furin, TMPRSS2) and discuss compounds proposed to inhibit viral entry with the end goal of treating…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Inhibition of the RNA-dependent RNA Polymerase of the SARS-CoV-2 by Short Peptide Inhibitors</strong> - The rapid proliferation of SARS-CoV-2 in COVID-19 patients has become detrimental to their lives. However, blocking the replication cycle of SARS-CoV-2 will help in suppressing the viral loads in patients, which would ultimately help in the early recovery. To discover such drugs, molecular docking, MD-simulations, and MM/GBSA approaches have been used herein to examine the role of several short ionic peptides in inhibiting the RNA binding site of the RNA-dependent RNA polymerase (RdRp). Out of…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>The natural stilbenoid (-)-hopeaphenol inhibits cellular entry of SARS-CoV-2 USA-WA1/2020, B.1.1.7 and B.1.351 variants</strong> - Antivirals are urgently needed to combat the global SARS-CoV-2/COVID-19 pandemic, supplement existing vaccine efforts, and target emerging SARS-CoV-2 variants of concern. Small molecules that interfere with binding of the viral spike receptor binding domain (RBD) to the host ACE2 receptor may be effective inhibitors of SARS-CoV-2 cell entry. Here we screened 512 pure compounds derived from natural products using a high-throughput RBD/ACE2 binding assay and identified (-)-hopeaphenol, a…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Suppressing STAT3 activity protects the endothelial barrier from VEGF-mediated vascular permeability</strong> - Vascular permeability triggered by inflammation or ischemia promotes edema, exacerbates disease progression, and impairs tissue recovery. Vascular endothelial growth factor (VEGF) is a potent inducer of vascular permeability. VEGF plays an integral role in regulating vascular barrier function physiologically and in pathologies, including cancer, stroke, cardiovascular disease, retinal conditions, and COVID-19-associated pulmonary edema, sepsis, and acute lung injury. Understanding temporal…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Broad antiviral and anti-inflammatory efficacy of nafamostat against SARS-CoV-2 and seasonal coronaviruses in primary human bronchiolar epithelia</strong> - Antiviral strategies that target host systems needed for SARS-CoV-2 replication and pathogenesis may have therapeutic potential and help mitigate resistance development. Here, we evaluate nafamostat mesylate, a potent broad-spectrum serine protease inhibitor that blocks host protease activation of the viral spike protein. SARS-CoV-2 is used to infect human polarized mucociliated primary bronchiolar epithelia reconstituted with cells derived from healthy donors, smokers and subjects with chronic…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>5-Hydroxymethyltubercidin Exhibits Potent Antiviral Activity against Flaviviruses and Coronaviruses, including SARS- CoV-2</strong> - Newly emerging or re-emerging viral infections continue to cause significant morbidity and mortality every year worldwide, resulting in serious effects on both health and the global economy. Despite significant drug discovery research against dengue viruses (DENV) and severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), no fully effective and specific drugs directed against these viruses have been discovered. Here, we examined the anti-DENV activity of tubercidin derivatives from a…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Identification of SARS-CoV-2 Main Protease Inhibitors Using Structure Based Virtual Screening and Molecular Dynamics Simulation of DrugBank Database</strong> - Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is highly pathogenic to humans and has created an unprecedented global health care threat. Globally, intense efforts are going on to discover a vaccine or new drug molecules to control the COVID-19. However, till today, there is no effective therapeutics or treatment available for COVID-19. In this study, we aim to find out potential small molecule inhibitors for SARS-CoV-2 main protease (M^(pro)) from the known DrugBank database…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Developing Cytokine Storm-Sensitive Therapeutic Strategy in COVID-19 Using 8P9R Chimeric Peptide and Soluble ACE2</strong> - Currently, the COVID-19 pandemic is an international challenge, largely due to lack of effective therapies. Pharmacotherapy has not yet been able to find a definitive treatment for COVID-19. Since SARS-CoV-2 affects several organs, treatment strategies that target the virus in a wider range are expected to be ultimately more successful. To this end, a two-step treatment strategy has been presented. In the first phase of the disease, when the patient is newly infected with the virus and the…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Delineating a potent antiviral activity of Cuphea ignea extract loaded nano-formulation against SARS-CoV-2: In silico and in vitro studies</strong> - The outbreak of coronavirus disease-2019, caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) is a worldwide emerging crisis. Polyphenols are a class of herbal metabolites with a broad-spectrum antiviral activity. However, most polyphenols encounter limited efficacy due to their poor solubility and degradation in neutral and basic environments. Thus, the effectiveness of their pharmaceutical application is critically dependent on the delivery systems to overcome the…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Consequences of COVID-19 pandemic on solid waste management: Scenarios pertaining to developing countries</strong> - Undoubtedly the most searched and spoken word of last year is coronavirus disease 2019 (COVID-19), which initially originated in Wuhan, China near the end of 2019. COVID-19 is a disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Albeit almost all countries shut down their borders to prevent rapid spread of the virus. However, the number of cases continues to increase in developing countries at a faster rate due to community and cluster transmission. The severity of…</p></li>
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<li data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Recombinant angiopoietin-like protein 4 attenuates intestinal barrier structure and function injury after ischemia/reperfusion</strong> - CONCLUSION: rhANGPTL4 can function as a protective agent against intestinal injury induced by intestinal I/R and improve survival via maintenance of intestinal barrier structure and functions.</p></li>
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</ul>
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<h1 data-aos="fade-right" id="from-patent-search">From Patent Search</h1>
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<ul>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>MACHINE LEARNING TECHNIQUE TO ANALYSE THE CONDITION OF COVID-19 PATIENTS BASED ON THEIR SATURATION LEVELS</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU335054861">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A HERB BASED COMPOSITION ANTI VIRAL MEDICINE FOR TREATMENT OF SARS COV 2 AND A METHOD FOR TREATING A PERSON INFECTED BY THE SARS COV 2 VIRUS</strong> - A Herbal composition, viz., PONNU MARUNTHU essentially comprising of ALLUIUM CEPA extract. [concentrated to 30%] 75%, SAPINDUS MUKOROSSI - extract [Optimised] 10%, CITRUS X LIMON - extract in its natural form 05 TRACYSPERMUM AMMI (L) – extract 07%,ROSA HYBRIDA - extract 03%, PONNU MARUNTHU solution 50 ml, or as a capsulated PONNU MARUNTHU can be given to SARS cov2 positive Patients, three times a day that is ½ an hour before food; continued for 3 days to 5 days and further taking it for 2 days if need be there; It will completely cure a person. When the SARS cov2 test shows negative this medicine can be discontinued. This indigenous medicine and method for treating a person inflicted with SARS COV 2 viral infection is quite effective in achieving of much needed remedy for the patients and saving precious lives from the pangs of death and ensuring better health of people. - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=IN334865051">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Anti-Sars-Cov-2 Neutralizing Antibodies</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857732">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>Expression Vector for Anti-Sars-Cov-2 Neutralizing Antibodies</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857737">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>DEVELOPMENT OF CNN SCHEME FOR COVID-19 DISEASE DETECTION USING CHEST RADIOGRAPH</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857177">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>一种检测新型冠状病毒的引物探针组合及其应用</strong> - 本发明提供了一种检测新型冠状病毒的引物探针组合及其应用，所述检测新型冠状病毒的引物探针组合包括特异性扩增并检测2019‑nCoV的ORF1ab基因、核壳蛋白N基因和刺突蛋白S基因N501Y突变位点的特异性引物对和探针。本发明还提供了一种检测新型冠状病毒的试剂盒及其以非疾病诊断和/或治疗为目的的使用方法。本发明所述检测新型冠状病毒的引物探针组合具有良好的特异性与灵敏度，配合优化后的检测体系，可以对待测样本进行快速准确的检测，并可以对整个实验流程进行监控，降低假阳性以及假阴性检测结果的出现概率，具有重要的意义。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN335430482">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>SARS-COV-2 BINDING PROTEINS</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333402004">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>COVID-19胸部CT图像识别方法、装置及电子设备</strong> - 本申请涉及一种COVID‑19胸部CT图像识别方法、装置及电子设备。所述方法获取COVID‑19的胸部CT图像，并针对胸部CT图像的特点，构建新冠肺炎CT识别网络，对该网络进行训练得到COVID‑19胸部CT图像识别模型，并利用该模型对待测CT图像进行分类。采用空洞卷积、深度卷积以及点卷积算子，减少冗余参数；采用并行结构连接方式，实现多尺度特征融合、降低模型复杂度；采用下采样方式，使用最大模糊池化以减少锯齿效应，保持信号的平移不变性；采用通道混洗操作，减少参数量与计算量，提高分类准确率，引入坐标注意力机制，使空间坐标信息与通道信息被关注，抑制不重要的信息，以解决资源匹配问题。 - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=CN335069870">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>A PROCESS FOR PREPARING MONTELUKAST SODIUM FOR TREATING COVID 19 PATIENTS</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857132">link</a></p></li>
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<li><p data-aos="fade-left" data-aos-anchor-placement="bottom-bottom"><strong>IDENTIFICATION OF ANTI-COVID 19 AGENT SOMNIFERINE AS INHIBITOR OF MPRO & ACE2-RBD INTERACTION</strong> - - <a href="https://patentscope.wipo.int/search/en/detail.jsf?docId=AU333857079">link</a></p></li>
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</ul>
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