Respiratory News and Research

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Melatonin synthesized in the lungs acts as a barrier against SARS-CoV-2

Melatonin synthesized in the lungs acts as a barrier against SARS-CoV-2, preventing expression of genes that encode proteins in cells such as resident macrophages in the nose and pulmonary alveoli, and epithelial cells lining the alveoli, all of which are entry points for the virus.

28 Jan 2021

Study examines the causes behind antibiotic overuse

The overuse of antibiotics occurs due to the mistaken widespread belief that they are beneficial for a broad array of conditions and because many physicians are willing to prescribe antibiotics if patients ask for the medication, according to a Rutgers study.

27 Jan 2021

Vaccines delivered via skin may offer better protection against respiratory diseases

Among infectious diseases that have caused pandemics and epidemics, smallpox stands out as a success story. Smallpox vaccination led to the disease's eradication in the twentieth century.

27 Jan 2021

Biliverdin shields SARS-CoV-2 from host antibody response, study finds

A team of international scientists has recently revealed that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) interacts with two heme metabolites, bilirubin and biliverdin, to escape the antibody-mediated host immune responses.

27 Jan 2021

Anakinra shows therapeutic potential in critically ill COVID-19 patients

A team of international scientists recently conducted an open-level clinical trial to investigate the effects of personalized immunotherapy on critically ill COVID-19 patients.

27 Jan 2021

CDC researchers back U.S. school re-openings but with strict COVID-19 regulations

As the U.S. continues to grapple with surging cases and the complex logistics of mass vaccination, is the country in a position to fully re-open its schools for in-person learning? Researchers at the Centers for Disease Control and Prevention (CDC) think so – notwithstanding a few very important caveats.

27 Jan 2021

Could spironolactone treat COVID-19-related pneumonia and pulmonary fibrosis?

Researchers have described the potential of the drug spironolactone, a potassium-sparing diuretic, and anti-androgen, in preventing or alleviating the severity of COVID-19 pneumonia, and in preventing pulmonary fibrosis.

27 Jan 2021

What do we know about the SARS-CoV-2 vaccines so far?

A new study surveys what we know so far about SARS-CoV-2 vaccine candidates from advanced clinical trials.

27 Jan 2021

Current surgical risk scores overestimate risk in mini-AVR procedures

Minimally invasive aortic valve replacement surgery is a safer procedure than indicated by current surgical risk scores, according to Joseph Lamelas, M.D., chief and program director of cardiothoracic surgery at the University of Miami Health System.

27 Jan 2021

SARS-CoV-2 spike may impair antigen presentation by CD8 T cells

A new study published on the bioRxiv preprint server aims to identify specific viral epitopes on the spike protein from various regions of the spike protein and the T cell responses they evoke.

27 Jan 2021

Rapid transmission of N501Y variants may be due to favorable effects on host receptor binding

Now, in new research posted to the preprint server bioRxiv*, scientists use an experimental structure of the Spike RBD domain co-crystallized with part of the ACE2 receptor and several in silico methods to analyze the possible impacts of three amino acid replacements (Spike K417N, E484K, N501Y) concerning ACE2 binding.

27 Jan 2021

Iron-carrying extracellular vesicles promote viral-bacterial co-infection

The mechanism by which acute viral respiratory infections promote secondary bacterial growth and infection in the airways depends on iron-carrying extracellular sacs secreted by the cells lining the host's airways, report researchers from the University of Pittsburgh School of Medicine in a paper published today in Cell Reports.

26 Jan 2021

Mutations in the SARS-CoV-2 receptor-binding domain analyzed

Using more than 100,000 virus genome sequences uploaded in the GISAID database, researchers found around 9,000 mutations in the virus spike protein RBD.

26 Jan 2021

Rapid reopening crucial in promoting the second wave of COVID-19

The spread of the coronavirus disease 2019 (COVID-19) has affected almost a hundred million people, with over two million deaths being attributed to this illness over the past 12 months or so. The only means to counter this so far has been through non-pharmaceutical interventions (NPIs).

26 Jan 2021

Antibodies and inflammatory markers may help identify COVID-19 cases and predict severity

A new preprint appearing on the medRxiv server describes the changes that occur in numerous antibodies and inflammatory molecules with age and at varying stages, or severity, of the infection and resulting illness. The results may help to predict the risk in individual cases.

26 Jan 2021

'Post-acute COVID-19 syndrome' likely to substantially impact NHS in England

Researchers in the UK have warned that cardiometabolic and pulmonary events among coronavirus disease 2019 (COVID-19) survivors following their discharge from hospital is likely to have an ongoing and substantial impact on the National Health Service (NHS) in England.

26 Jan 2021

Elevated levels of certain immune cells in the blood linked to COVID-19 severity

Individual variations in how the immune system responds to SARS-CoV-2 appear to impact the severity of disease.

26 Jan 2021

Moderna vaccine fully neutralizes new SARS-CoV-2 variants, study shows

Researchers in the United States have conducted a study showing that Moderna’s mRNA-1273 vaccine neutralizes all circulating variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tested to date.

26 Jan 2021

Researchers develop method for presymptomatic COVID-19 detection

An encouraging new study by researchers at University College London, UK, reports the potential of a form of COVID-19 testing which can detect presymptomatic cases.

26 Jan 2021

Codon frequency optimization shows SARS-CoV-2 antiviral potential

A study conducted by researchers in the US has revealed that optimization of codon for bacterial expression causes the production of an inactive enzyme non-structural protein 12 (Nsp12), a catalytic subunit of RNA-dependent RNA polymerase of SARS-CoV-2.

26 Jan 2021