Updated: 40 min 4 sec ago
The remarkable progress made over the past 30 years to reduce fractures and dramatically improve the quality of life for millions of osteoporosis patients is rapidly being reversed, say two bone health experts.
To study brain cell’s operation and test the effect of medication on individual cells, the conventional Petri dish with flat electrodes is not sufficient. For truly realistic studies, cells have to flourish within three-dimensional surroundings. Researchers have developed a sieve with 900 openings, each of which has the shape of an inverted pyramid. On top of this array of pyramids, a micro-reactor takes care of cell growth.
Researchers have identified a gene variant which explains why some patients with Parkinson’s Disease respond well to drug treatment and other do not.
Researchers have reported a new technique to determine the chemical composition of materials using near-infrared light. The work could have a number of potential applications, including improving downhole drilling analysis in the oil and gas industry and broadening the spectrum of solar light that can be harvested and converted to electricity.
Scientists provide an overview of recent developments in light-based technologies that enable a deeper noninvasive look into the human body. The technologies hold promise to enable compact, wearable devices for point-of-care diagnostics and powerful new systems that provide even more information from under the skin.
In the first billion years of Earth's history, the planet was bombarded by primordial asteroids, while a faint Sun provided much less heat. Scientists now posit that this tumultuous beginning may have ultimately fostered life on Earth, particularly in terms of sustaining liquid water.
Changes in gene expression were found when coral and algae begin to interact.
Traditionally, the evolutionary development of an insect species has been explained by the notion that the female insect chooses her male partner based on size and other factors, so-called assortative mating. These mating patterns have also been believed to partially explain how the isolation between different species is maintained. However, new research shows just the opposite: assortative mating breaks down the sexual barrier between species rather than preserves it, which could lead to species becoming extinct.
Potent doses of broccoli sprout extract activate a 'detoxification' gene and may help prevent cancer recurrence in survivors of head and neck cancer, according to a 'green chemoprevention' trial. It is the first study demonstrating that the extract protects against oral cancer, with the results of human, animal and laboratory tests reported today.
A new study evaluates the skill of a seasonal forecast for predicting future conditions in the Pacific Northwest marine environment.
'Mutant flies' have provided insight into the origins of Parkinson's disease, report scientists. The work found that the death of neurons associated with the disease was prevented when chemicals that block the effects of endoplasmic reticulum stress were used.
Females of low social status often have limited access to food resources. As a result, their offspring are nursed infrequently and may experience long fasting periods that can seriously compromise their growth and survival. In particular when they have to share their milk intake with a littermate, milk shortage can be very detrimental. Yet researchers found that low-ranking spotted hyenas were able to compensate to some extent for their low nursing frequency. They do this by transferring more milk of superior nutritional quality to their offspring than high-ranking mothers during nursing bouts. The results also reveal that the socially dominant offspring in twin litters efficiently uses aggression against its subordinate littermate to skew milk transfer in its favor.
Researchers announced one year ago that the cells of the Mycobacterium brumae offer an improved alternative to current bladder cancer treatments such as BCG (an immunotherapy based on the Mycobacterium bovis), which can cause infections.
Practically all currently available treatments for malaria are based in some form or other on a derivative of artemisinin, a plant substance that is found in the leaves and flowers of annual mugwort (Artemisia annua). However, more and more malaria parasites are becoming resistant to artemesinin – especially in South-East Asia. In order to provide an accurate view of the spread of resistance throughout the world, an international research group from more than 50 countries has drawn up a map of artemesinin resistance.
Researchers have pioneered an innovative new technique to make flexible screens more effective and efficient. GraphExeter -- a material adapted from the 'wonder material' graphene -- can substantially improve the effectiveness of large, flat, flexible lighting, say investigators.
There is little awareness of the chemical components of cigarette smoke amongst US adults, even though many of them report having looked for relevant information. In a new study, researchers suggest that the Food and Drug Administration (FDA) expand its messaging activities so that information about these constituents reaches all segments of the US population, especially those most vulnerable to tobacco product use and its associated health risks.
Researchers have discovered a new phosphor that could make next-generation fluorescent and LED lighting even cheaper and more efficient. The team used highly luminescent clusters of silver atoms and the porous framework of minerals known as zeolites.
A European team of astronomers have used the new GRAVITY instrument at ESO's Very Large Telescope to obtain exciting observations of the center of the Milky Way by combining light from all four of the 8.2-meter Unit Telescopes for the first time. These results provide a taste of the groundbreaking science that GRAVITY will produce as it probes the extremely strong gravitational fields close to the central supermassive black hole and tests Einstein's general relativity.
Cancer cells appear to depend on an unusual survival mechanism to spread around the body, according to an early study. The discovery could help with future development of novel treatments to prevent metastasis and secondary tumors.
Following cancer prevention guidelines on diet and physical activity consistently reduced overall cancer incidence and mortality, as well as reducing risk of breast, endometrial, and colorectal cancers.