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Study shows furin cleavage site is crucial for SARS-CoV-2 replication

In a recent bioRxiv* preprint paper, researchers from the United States demonstrate the pivotal role the furin cleavage site insertion in the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike glycoprotein plays in viral replication and pathogenesis – highlighting, in turn, the need for mutation monitoring when developing therapeutics and vaccines.

27 Aug 2020

Study: Estrogen may reduce severity of COVID-19 symptoms in women

Why are men at greater risk than women for more severe symptoms and worse outcomes from COVID-19 regardless of age?

27 Aug 2020

First lethal mouse model of SARS-CoV-2 developed

Army scientists have developed the first lethal mouse model of SARS-CoV-2, the virus that causes COVID-19, using mice that were genetically engineered to express the human ACE2 gene--a key mechanism by which the virus enters human cells.

27 Aug 2020

Estradiol appears to help in female SARS-CoV-2 infection

A new study published on the preprint server medRxiv in August 2020 shows that the risk of infection is high for pre-menopausal women but the risk of death is much higher for men in the same age group and throws light on the protective nature of estradiol therapy in post-menopausal women.

26 Aug 2020

Advances in Virus Epigenetics

Growing evidence shows viruses exploit epigenetic processes to control their life cycles but epigentic regulation of viral infections is not fully understood.

From Chromatrap® - Porvair Sciences Ltd 25 Aug 2020

Inhaled steroids reduce SARS-CoV-2-related genes in COPD

A new study published on the preprint server medRxiv* aims to explore the effects of treatment with ICS on the expression of specific genes related to SARS-CoV-2 infection in bronchial epithelial cells in a prospective interventional design.

25 Aug 2020

COVID specific IgA monoclonal antibodies may provide effective immunity against coronavirus

A new study by researchers at MassBiologics of UMass Medical School published in Nature Communications suggests that COVID specific IgA monoclonal antibodies may provide effective immunity in the respiratory system against the novel coronavirus - a potentially critical feature of an effective vaccine.

25 Aug 2020

Single dose nasal vaccine against SARS-CoV-2 shows promise in animal studies

Now researchers at the Washington University School of Medicine in St. Louis have worked on developing a candidate vaccine against the infection that could be administered in a single dose via a nasal spray rather than an injection. In their preliminary studies using lab mice, this single dose of the nasal vaccine successfully prevented the infection with the novel coronavirus.

24 Aug 2020

Genomic analysis reveals many animal species vulnerable to SARS-CoV-2

Now, a new genomics study by University of California, Davis, California researchers identifies a large number of mammals that can potentially be infected by SARS-CoV-2 via their ACE2 proteins.

24 Aug 2020

Ferrets not susceptible to SARS-CoV-2 infection

A recent study by scientists at the Cummings School of Veterinary Medicine at Tufts University has revealed that ferrets are not susceptible to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection even if they are directly exposed to symptomatic coronavirus disease 2019 (COVID-19) patients for a prolonged time.

24 Aug 2020

One college’s pop-up COVID test: Stop and ‘smell the roses’ (or the coffee)

If all goes according to plan, Penn State University students who opt for an on-campus experience this fall will start in-person classes on Aug. 24 under the banner of a "Mask Up or Pack Up" campaign.

24 Aug 2020

Antihypertensives improve COVID-19 survival rates

Previous studies have also linked hypertension to severe coronavirus disease (COVID-19). Now, a new study by researchers at the University of East Anglia's Norwich Medical School has found that the risk of severe COVID-19 and death was reduced for patients with high blood pressure who were taking Angiotensin-Converting Enzyme inhibitors (ACEi) or Angiotensin Receptor Blockers (ARB).

24 Aug 2020

Loss of supporting cells in olfactory epithelium causes loss of smell in COVID-19

In the current pandemic of COVID-19, many patients have reported symptoms of loss of smell and taste. The cellular basis of this phenomenon has not been satisfactorily explained so far. However, a new study published in the Briefings in Bioinformatics in August 2020 shows how this symptom is related to viral pathogenesis.

23 Aug 2020

Raccoon dogs potential intermediate host for SARS-CoV-2

Researchers at the Friedrich Loeffler Institute in Germany have conducted a study demonstrating that raccoon dogs were a potential intermediate host in the transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) – the agent that causes coronavirus disease 2019 (COVID-19).

23 Aug 2020

Genomic analysis reveals vulnerability of many animal species to SARS-CoV-2 infection

Humans are not the only species facing a potential threat from SARS-CoV-2, the novel coronavirus that causes COVID-19, according to a new study from the University of California, Davis.

21 Aug 2020

Macaques show low neutralizing antibody and cellular immune response to SARS-CoV-2

A new study published on the preprint server bioRxiv* in August 2020 presents a cynomolgus macaque model that develops symptomatic SARS-CoV-2 infection in a mild form, with low or no antibody responses, making it suitable to study human responses to vaccines and drugs targeting the virus.

21 Aug 2020

Bioinformatics identifies key genes and cellular pathways in COVID-19

The COVID-19 pandemic is showing no signs of waning or extinction anytime soon. Now, a new study published on the preprint server bioRxiv* in August 2020 shows a new bioinformatics approach to studying the pathogenesis of this disease, by uncovering the differentially expressed genes (DEGs) and cell signaling pathways that cause the disease characteristics. This will help develop better therapies to counter the effects of these genes.

20 Aug 2020

New SARS-CoV-2 vaccine effective in macaques

Researchers from the biotechnology company Novavax in Gaithersburg, Maryland, have developed a vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that successfully induces immunogenicity and protection against the virus in macaques.

20 Aug 2020

Cells lining the nose are key entry point for coronavirus, shows study

Scientists at Johns Hopkins Medicine, experimenting with a small number of human cell samples, report that the "hook" of cells used by SARS-CoV-2 to latch onto and infect cells is up to 700 times more prevalent in the olfactory supporting cells lining the inside of the upper part of the nose than in the lining cells of the rest of the nose and windpipe that leads to the lungs.

20 Aug 2020

SARS-CoV-2 hijacks antiviral factors to promote infection in human lung cells

Now, a new study published in the preprint server bioRxiv in August 2020 shows that under conditions resembling those in vivo, IFNs may promote efficient viral invasion instead.

20 Aug 2020