Showing 20 articles starting at article 741
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Categories: Biology: Biotechnology, Space: Astronomy
Published Evolution is not as random as previously thought
(via sciencedaily.com) Original source A groundbreaking study has found that evolution is not as unpredictable as previously thought, which could allow scientists to explore which genes could be useful to tackle real-world issues such as antibiotic resistance, disease and climate change. The study challenges the long-standing belief about the unpredictability of evolution, and has found that the evolutionary trajectory of a genome may be influenced by its evolutionary history, rather than determined by numerous factors and historical accidents.
Published Space oddity: Uncovering the origin of the universe's rare radio circles
(via sciencedaily.com) Original source Astronomers believe they may have found the origin of the universe's giant odd radio circles: they are shells formed by outflowing galactic winds, possibly from massive exploding stars known as supernovae.
Published Advancing the generation of in-vivo chimeric lungs in mice using rat-derived stem cells
(via sciencedaily.com) Original source Creating a functional lung using interspecies chimeric animals is an attractive albeit challenging option for lung transplantation, requiring more research on the viable conditions needed for organ generation. A new study uses reverse-blastocyst complementation and tetraploid-based organ complementation methods to first determine these conditions in lung-deficient mice and then to generate rat-derived lungs in these mice. It provides useful insights on the intrinsic species-specific barriers and factors associated with lung development in interspecies chimeric animals.
Published A new approach can address antibiotic resistance to Mycobacterium abscessus
(via sciencedaily.com) Original source Scientists have created analogs of the antibiotic spectinomycin that are significantly more effective against these highly resistant bacteria.
Published New images reveal what Neptune and Uranus really look like
(via sciencedaily.com) Original source Neptune is fondly known for being a rich blue and Uranus green -- but a new study has revealed that the two ice giants are actually far closer in color than typically thought. The correct shades of the planets have now been confirmed.
Published Scientists engineer plant microbiome to protect crops against disease
(via sciencedaily.com) Original source Scientists have engineered the microbiome of plants for the first time, boosting the prevalence of 'good' bacteria that protect the plant from disease. The findings could substantially reduce the need for environmentally destructive pesticides.
Published Treating tuberculosis when antibiotics no longer work
(via sciencedaily.com) Original source A research team has detected various substances that have a dual effect against tuberculosis: They make the bacteria causing the disease less pathogenic for human immune cells and boost the activity of conventional antibiotics.
Published Nematode proteins shed light on infertility
(via sciencedaily.com) Original source Biologists developed a method for illuminating the intricate interactions of the synaptonemal complex in the nematode C. elegans. The authors identified a trio of protein segments that guide chromosomal interactions, and pinpointed the location where they interact with each other. Their novel method uses a technique known as genetic suppressor screening, which can serve as a blueprint for research on large cellular assemblies that resist traditional structural analysis.
Published Study reveals clues to how Eastern equine encephalitis virus invades brain cells
(via sciencedaily.com) Original source Researchers have determined how Eastern equine encephalitis virus attaches to a receptor it uses to enter and infect cells. The findings laid the groundwork for a receptor decoy molecule that protects mice from encephalitis caused by the virus.
Published Bacteria load their syringes
(via sciencedaily.com) Original source Many bacterial pathogens use small injection apparatuses to manipulate the cells of their hosts, such as humans, so that they can spread throughout the body. To do this, they need to fill their syringes with the relevant injection agent. A technique that tracks the individual movement of proteins revealed how bacteria accomplish this challenging task.
Published New reasons eating less fat should be one of your resolutions
(via sciencedaily.com) Original source A new study to motivate your New Year's resolutions: it demonstrates that high-fat diets negatively impact genes linked not only to obesity, colon cancer and irritable bowels, but also to the immune system and brain function.
Published Is oxygen the cosmic key to alien technology?
(via sciencedaily.com) Original source Astrophysicists outline the links between atmospheric oxygen and the potential rise of advanced technology on distant planets.
Published Designing the 'perfect' meal to feed long-term space travelers
(via sciencedaily.com) Original source Imagine blasting off on a multiyear voyage to Mars, fueled by a diet of bland, prepackaged meals. As space agencies plan for longer missions, they're grappling with the challenge of how to best feed people. Now, researchers have designed the optimal 'space meal': a tasty vegetarian salad. They chose fresh ingredients that meet male astronauts' specialized nutritional needs and can be grown in space.
Published A carbon-lite atmosphere could be a sign of water and life on other terrestrial planets
(via sciencedaily.com) Original source Best chance of finding liquid water, and even life on other planets, is to look for the absence of carbon dioxide in their atmospheres.
Published Further evidence for quark-matter cores in massive neutron stars
(via sciencedaily.com) Original source New theoretical analysis places the likelihood of massive neutron stars hiding cores of deconfined quark matter between 80 and 90 percent. The result was reached through massive supercomputer runs utilizing Bayesian statistical inference.
Published Researchers study a million galaxies to find out how the universe began
(via sciencedaily.com) Original source Researchers have analyzed more than one million galaxies to explore primordial fluctuations that seeded the formation of the structure of the entire universe.
Published Big impacts from small changes in cell
(via sciencedaily.com) Original source Tiny things matter -- for instance, one amino acid can completely alter the architecture of the cell. Researchers have now investigated the structure and mechanics of the main component of the cytoskeleton of the cell: a protein known as actin. Actin is found in all living cells where it has a range of important functions -- from muscle contraction to cell signalling and cell shape. This protein comes in two different varieties termed 'isoforms', which are known as gamma actin and beta actin.
Published How jellyfish regenerate functional tentacles in days
(via sciencedaily.com) Original source At about the size of a pinkie nail, the jellyfish species Cladonema can regenerate an amputated tentacle in two to three days -- but how? Regenerating functional tissue across species, including salamanders and insects, relies on the ability to form a blastema, a clump of undifferentiated cells that can repair damage and grow into the missing appendage. Jellyfish, along with other cnidarians such as corals and sea anemones, exhibit high regeneration abilities, but how they form the critical blastema has remained a mystery until now.
Published Researchers map how measles virus spreads in human brain
(via sciencedaily.com) Original source Researchers mapped how the measles virus mutated and spread in the brain of a person who succumbed to a rare, lethal brain disease. New cases of this disease, which is a complication of the measles virus, may occur as measles reemerges among the unvaccinated, say researchers.
Published GPCR structure: Research reveals molecular origins of function for a key drug target
(via sciencedaily.com) Original source Scientists reveal how G protein-coupled receptors, major therapeutic drug targets, decode critical properties of their ligands.