Culture
Almost all bacteria rely on the same emergency valves--protein channels that pop open under pressure, releasing a deluge of cell contents. It is a last-ditch effort, a failsafe that prevents bacteria from exploding and dying when stretched to the limit. If we understood how those protein channels worked, antibiotic drugs could be designed to open them on demand, draining a bacterium of its nutrients by exploiting a floodgate common to many species.
A study done in rooms where COVID-19 patients were isolated shows that the virus's RNA - part of the genetic material inside a virus - can persist up to a month in dust.
The study did not evaluate whether dust can transmit the virus to humans. It could, however, offer another option for monitoring COVID-19 outbreaks in specific buildings, including nursing homes, offices or schools.
Karen Dannemiller, senior author of the study, has experience studying dust and its relationship to potential hazards like mold and microbes.
Researchers have identified molecular signatures of the aging process in mice, publishing their results today in the open-access eLife journal.
Their analyses provide one of the most comprehensive characterisations of the molecular signatures of aging across diverse types of cells from different tissues in a mammal, and will aid future studies on aging and related topics.
A study carried out by the University of Granada indicates that smoking cannabis significantly alters key visual functions, such as visual acuity, contrast sensitivity, three-dimensional vision (stereopsis), the ability to focus, and glare sensitivity
Yet, more than 90% of users believe that using cannabis has no effect on their vision, or only a slight effect
ANN ARBOR, Mich. -- For young athletes, the new normal on soccer fields and basketball courts means temperature checks before practice, wearing masks through games and a sparse in-person fan base.
But that hasn't kept children and teens from playing. Close to a fourth of parents say their child has participated in school, travel, or community sports during the fall or winter months, according to the C.S. Mott Children's Hospital National Poll on Children's Health at the University of Michigan.
Scientists found six sex chromosomes in the Odorrana swinhoana frog species endemic in Taiwan, giving new insights into how complex XY systems evolve.
Niigata, Japan- New insights into the three-dimensional (3D) morphology of the human uterine endometrium could advance our understanding of the mechanisms of endometrial regeneration and fertilized egg implantation while clarifying the pathogenesis of menstrual disorders, infertility and endometrium-related diseases such as adenomyosis, endometriosis, endometrial hyperplasia and endometrial cancer.
A Korean research team succeeded in developing a technology generating various vibration using LED light signals. The technology allows various tactile sensations by area and reduction in size by considerably lowering the cost of light source, and these are expected to be applied to many industries including automobile and electronics.
What The Study Did: This study used data from a national database to compare clinical outcomes of surgical patients with and without COVID-19.
Authors: Max R. Haffner, M.D., of the University of California, Davis, in Sacramento, is the corresponding author.
To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/
(doi:10.1001/jamanetworkopen.2021.5697)
Using an innovative protein-based approach, researchers at the Atlanta Veterans Affairs Medical Center and nearby Emory University have found genes and corresponding proteins that could point the way to new depression treatments.
An international team today reports the findings of an independent assessment of five commercially-available assays for tumour DNA sequencing - a fast, cheap and less invasive method to diagnose and monitor cancer.
The researchers revealed that all assays could reliably detect so-called circulating tumour DNA (ctDNA) when it made up 0.5% of the total DNA in blood, a level of sensitivity that allows detection, genetic analysis and monitoring of late-stage and metastatic tumours.
An amber fossil of a Cretaceous beetle has shed some light on the diet of one of the earliest pollinators of flowering plants.
The animal's remains were unearthed by researchers at the University of Bristol and the Nanjing Institute of Geology and Palaeontology of the Chinese Academy of Sciences (NIGPAS) who were able to study its fossil faecal matter, which was composed solely of pollen.
Family history of early cardiac events in first degree relatives such as a parent or sibling is a major risk factor, especially for premature events. Currently, data on risks in close relatives of patients with a family history of premature heart attacks, chronic stable angina or peripheral vascular disease are sparse.
Breast cancer survivors who are overweight have a statistically significant increased risk of developing second primary cancers, according to results from a study conducted by Kaiser Permanente researchers and published in the Journal of the National Cancer Institute.