ScienceDaily: Top Health News


Pathogenic bacteria rendered almost harmless

Posted: 21 Jun 2021 05:24 PM PDT

By identifying one of the mechanisms regulating the virulence of Pseudomonas aeruginosa, a research team is proposing a new strategy to combat this bacterium, which is resistant to many common antibiotics.

New position statement declares that sleep is essential to health

Posted: 21 Jun 2021 02:41 PM PDT

A new position statement emphasizes that sleep is a biological necessity, and insufficient sleep and untreated sleep disorders are detrimental for health, well-being, and public safety.

COVID-19 dual-antibody therapies effective against variants in animal study

Posted: 21 Jun 2021 01:05 PM PDT

A new study suggests that many, but not all, COVID-19 therapies made from combinations of two antibodies are effective against a wide range of virus variants. Further, combination therapies appear to prevent the emergence of drug resistance.

SARS-CoV-2 infections may trigger antibody responses against multiple virus proteins

Posted: 21 Jun 2021 01:05 PM PDT

All coronaviruses produce four primary structural proteins and multiple nonstructural proteins. However, the majority of antibody-based SARS-CoV-2 research has focused on the spike and nucleocapsid proteins. A new study suggests that immune responses may develop against other proteins produced by the SARS-CoV-2 virus.

New method developed to detect and adjust population structure in genetic summary data

Posted: 21 Jun 2021 01:05 PM PDT

Researchers announced the development of a new method to increase the utility and equity of large genetic databases.

Exposure to pollutants, increased free-radical damage speeds up aging

Posted: 21 Jun 2021 01:05 PM PDT

A new study suggests that unrepaired DNA damage can increase the speed of aging.

Gene profile in blood predicts risk of poor outcomes, death for patients with COVID-19

Posted: 21 Jun 2021 10:39 AM PDT

A previously validated blood gene profile that predicts idiopathic pulmonary fibrosis mortality was repurposed to assess the likelihood of COVID-19 survival, a new study reports,

Antibody disease enhancement of COVID-19 does not appear to occur in animal models

Posted: 21 Jun 2021 10:39 AM PDT

Researchers have demonstrated in mice and monkeys that human antibodies lacked the ability to make SARS-CoV-2 infection worse and, instead, exerted their defensive powers against the infection. The findings help reinforce evidence that antibodies are safe when given as treatments or induced by COVID-19 vaccines.

There's more to genes than DNA: How Mum and Dad add something extra, just for you

Posted: 21 Jun 2021 09:38 AM PDT

Biologists have discovered 71 new 'imprinted' genes in the mouse genome, a finding that takes them a step closer to unravelling some of the mysteries of epigenetics - an area of science that describes how genes are switched on (and off) in different cells, at different stages in development and adulthood.

How the surfaces of silicone breast implants affect the immune system

Posted: 21 Jun 2021 09:37 AM PDT

A team analyzed how the surface topography on silicone breast implants influences health complications such as scarring, inflammation, and a rare type of lymphoma.

Birthdays and COVID-19

Posted: 21 Jun 2021 09:37 AM PDT

A recent study found that the risk of SARS-CoV-2 infection increased 30 percent for households with a recent birthday in counties with high rates of COVID-19, but no such jumps were seen in areas with low rates of infection. The findings suggest informal social gatherings such as birthday parties played role in infection spread at the height of the coronavirus pandemic.

New research finds link between walking speed and dual tasking after stroke

Posted: 21 Jun 2021 09:37 AM PDT

Research has found that training stroke survivors to walk at a faster speed during recovery can help improve the brain function that enables people to walk and perform another task simultaneously, known as dual-task walking.

Targeted therapy could be first line treatment for childhood cancer

Posted: 21 Jun 2021 09:37 AM PDT

Scientists studying a common childhood cancer have made a major breakthrough which could lead to a cure for some youngsters who would not have survived the condition.

Adjuvant-free avian influenza vaccines in the works

Posted: 21 Jun 2021 09:37 AM PDT

Researchers develop a new avian influenza vaccine using plant-based recombinant protein.

A tapeworm drug against SARS-CoV-2?

Posted: 21 Jun 2021 09:37 AM PDT

Researchers have examined the way in which SARS-CoV-2 reprograms the metabolism of the host cell in order to gain an overall advantage. In their study, the researchers were able to identify four substances which inhibit SARS-CoV-2 replication in the host cell.

Microscopy deep learning predicts viral infections

Posted: 21 Jun 2021 09:37 AM PDT

When viruses infect cells, changes in the cell nucleus occur, and these can be observed through fluorescence microscopy. Using fluorescence images from live cells, researchers have trained an artificial neural network to reliably recognize cells that are infected by adenoviruses or herpes viruses. The procedure also identifies severe acute infections at an early stage.

Summer catch-up programs need to focus on teens' wellbeing, not just academic progress

Posted: 21 Jun 2021 09:37 AM PDT

Summer holiday school catch-up programs to address gaps in knowledge after school closures need to support children who are still struggling due to social isolation.

Nrf2: The custodian regulating oxidative stress and immunity against acrylamide toxicity

Posted: 21 Jun 2021 09:37 AM PDT

A study using genetically modified mice shows that a protein called Nrf2 increases the expression of protective genes in the acrylamide-induced toxic response.

Cellular mechanisms of early mammary gland development unraveled

Posted: 21 Jun 2021 09:37 AM PDT

A research group used live tissue imaging for the first time to visualize the emergence of the mammary gland.

Twenty-year study links childhood depression to disrupted adult health and functioning

Posted: 21 Jun 2021 09:37 AM PDT

Depression in youth, between the ages of 10 and 24 years, is both a leading cause of stress and a possible risk factor for future diseases and impairment. Now, a study confirms that depression in childhood or adolescence is associated with higher levels of adult anxiety and substance use disorders, worse health and social functioning, less financial and educational achievement, and increased criminality.

Scientists reveal silver-based antimicrobials can be utilized as antibiotic adjuvants to combat antibiotic-resistant Staphylococcus aureus

Posted: 21 Jun 2021 07:42 AM PDT

A research team discovers that silver (Ag)-based antimicrobials can effectively combat antibiotic resistant Staphylococcus aureus by targeting multiple biological pathways via functional disruption of key proteins and can be further exploited to enhance the efficacy of conventional antibiotics as well as to resensitize methicillin-resistant Staphylococcus aureus (MRSA) to antibiotics.

Some blood pressure-lowering meds linked to less memory decline in older adults, study finds

Posted: 21 Jun 2021 05:41 AM PDT

High blood pressure is a risk factor for cognitive decline and dementia in older adults. Studies have shown that commonly prescribed high blood pressure medications, or antihypertensives, may have a positive, beneficial impact on cognitive function including memory. This meta-analysis compares the impact on memory over time associated with taking antihypertensives that cross the blood-brain barrier versus those that do not.

Researchers explore microbial ecosystem in search of drugs to fight SARS-CoV-2

Posted: 20 Jun 2021 07:42 AM PDT

Researchers have found that certain commensal bacteria that reside in the human intestine produce compounds that inhibit SARS-CoV-2.

Study evaluates potential causes of increased transmission in SARS-CoV-2 variants

Posted: 20 Jun 2021 07:42 AM PDT

Although two SARS-CoV-2 variants are associated with higher transmission, patients with these variants show no evidence of higher viral loads in their upper respiratory tracts compared to the control group, a new study found.

mRNA vaccine yields full protection against malaria in mice

Posted: 18 Jun 2021 06:17 AM PDT

Scientists developed an mRNA vaccine that protects against malaria in animal models. Malaria remains a large public health and economic burden worldwide as well as a danger to deployed Service Members. This vaccine uses mRNA accompanied by a lipid nanoparticle to prompt cells to code for circumsporozoite protein, which then triggers an immune response against malaria. The vaccine achieved high levels of protection in mice, encouraging further development for the novel platform.