In a new study published in “Geochemistry, Geophysics, Geosystems” an international team of scientists explain that there may be more than a quadrillion tons of diamonds scattered throughout the Earth, buried in ancient slabs of rocks known as cratonic roots. They came across these by studying seismic wave movement.
Groundbreaking research shows that neurological health depends as much on signals sent by the body’s large, leg muscles to the brain as it does on directives from the brain to the muscles. Published today in Frontiers in Neuroscience, the study fundamentally alters brain and nervous system medicine — giving doctors new clues as to why patients with motor neuron disease, multiple sclerosis, spinal muscular atrophy and other neurological diseases often rapidly decline when their movement becomes limited.
“Our study supports the notion that people who are unable to do load-bearing exercises — such as patients who are bed-ridden, or even astronauts on extended travel — not only lose muscle mass, but their body chemistry is altered at the cellular level and even their nervous system is adversely impacted,” says Dr. Raffaella Adami from the Università degli Studi di Milano, Italy.
The study involved restricting mice from using their hind legs, but not their front legs, over a period of 28 days. The mice continued to eat and groom normally and did not exhibit stress. At the end of the trial, the researchers examined an area of the brain called the sub-ventricular zone, which in many mammals has the role of maintaining nerve cell health. It is also the area where neural stem cells produce new neurons.
Continue reading “Leg Exercise is Critical to Brain and Nervous System Health” »
“Every time you miss a protein crystal, because they are so rare, you risk missing on an important biomedical discovery.”
- Patrick Charbonneau, Duke University Dept. of Chemistry and Lead Researcher, MARCO initiative.
Protein crystallization is a key step to biomedical research concerned with discovering the structure of complex biomolecules. Because that structure determines the molecule’s function, it helps scientists design new drugs that are specifically targeted to that function. However, protein crystals are rare and difficult to find. Hundreds of experiments are typically run for each protein, and while the setup and imaging are mostly automated, finding individual protein crystals remains largely performed through visual inspection and thus prone to human error. Critically, missing these structures can result in lost opportunity for important biomedical discoveries for advancing the state of medicine.
Continue reading “Automating Drug Discoveries Using Computer Vision” »
Chemical innovation plays a key role in developing cutting-edge technologies for the military. Research chemists design and synthesize new molecules that could enable a slew of next-generation military products, such as novel propellants for spacecraft engines; new pharmaceuticals and medicines for troops in the field; lighter and longer-lasting batteries and fuel cells; advanced adhesives, coatings and paints; and less expensive explosives that are safer to handle. The problem, however, is that existing molecule design and production methods rely primarily on experts’ intuition in a laborious, trial-and-error research process.
DARPA’s Make-It program, currently in year three of a four-year effort, is developing software tools based on machine learning and expert-encoded rules to recommend synthetic routes (i.e., the “recipe” to make a particular molecule) optimized for factors such as cost, time, safety, or waste reduction. The program seeks to free chemists so that they may focus their energy on chemical innovation, rather than testing various molecular synthesis pathways. The program also is developing automated devices that uniformly and reproducibly create the desired chemical based on the software-generated recipe – this one-device, many-molecules concept is a departure from the traditional dedicated reactors in chemical production. Make-It research teams have recently demonstrated significant progress toward fully automated rapid molecule production, which could speed the pace of chemical discovery for a range of defense products and applications.
“A seasoned research chemist may spend dozens of hours designing synthetic routes to a new molecule and months implementing and optimizing the synthesis in a lab,” said Anne Fischer, program manager in DARPA’s Defense Sciences Office. “Make-It is not only freeing chemists to expend brain power in other areas such as molecular discovery and innovation, it is opening chemical synthesis and discovery to a much broader community of scientific researchers who will benefit from faster development of new molecules.”
An interview with Dr. Vadim Gladyshev, Harvard University.
We have recently had occasion to have a chat with Dr. Vadim Gladyshev, Professor of Medicine and Director of Redox Medicine at Brigham and Women’s Hospital, Harvard Medical School, in Boston, Massachusetts. He is an expert in aging and redox biology and is known for his characterization of the human selenoproteome. His research laboratory focuses on comparative genomics, selenoproteins, redox biology, and, naturally, aging and lifespan control.
Dr. Gladyshev graduated from Moscow State University, in Moscow, Russia; his postdoctoral studies in the 1990s took place at the National Heart, Lung, and Blood Institute, and the National Cancer Institute, in Bethesda, Maryland. Even when he was young, he was very much interested in chemistry and experimental science: he twice won the regional Olympiad in chemistry and graduated from high school with a gold medal. He also graduated with the highest honors from Moscow State University. This enviable track record is even more impressive considering that Dr. Gladyshev completed music school and high school at the same time and became a chess player equivalent to national master during his college years.
Continue reading “Dr. Vadim Gladyshev – Harvard University” »
https://youtube.com/watch?v=doNNClTTYwE
Microsoft is “all-in” on building a quantum computer and is making advancements “every day”, according to one of the company’s top experts on the technology.
Julie Love (above), Director of Quantum Computing, called the firm’s push to build the next generation of computer technology “one of the biggest disruptive bets we have made as a company”.
Continue reading “Microsoft making progress on quantum computer ‘every day’” »
And inflammation is one of the three primary ageing processes.
Scientists have discovered a new metabolic process in the body that can switch off inflammation. They have discovered that ‘itaconate’—a molecule derived from glucose—acts as a powerful off-switch for macrophages, which are the cells in the immune system that lie at the heart of many inflammatory diseases including arthritis, inflammatory bowel disease and heart disease.
The scientists, working in the School of Biochemistry and Immunology in the Trinity Biomedical Sciences Institute at Trinity College Dublin, hope their discovery will have relevance for inflammatory and infectious diseases—and that their findings may also help to develop much-needed new drugs to treat people living with these conditions.
Professor of Biochemistry at Trinity, Luke O’Neill, was, along with Dr. Mike Murphy of the University of Cambridge, the joint leader of the work just published in leading international journal Nature. The discoveries were made using both human cells and mice as a model organism.
Continue reading “Scientists discover promising off-switch for inflammation” »
This could be used for hydrogen storage.
Of the four states of matter, gases are the hardest to pin down. Gas molecules move quickly and wildly and don’t like to be confined. When confined, heat and pressure build in the container, and it doesn’t take long before the gas blows the lid off the place, literally. Luckily, gases are superficial. Provide them with an attractive internal surface area, and they’ll pin themselves down in no time. No, it’s not love at first sight, it’s adsorption.
“Adsorption is the processes of gas pinning to the surface of another material—the inside walls of a container, for example,” says Chris Wilmer, assistant professor in Pitt’s Department of Chemical and Petroleum Engineering. “When adsorption occurs, the gas molecules stop bumping into each other, reducing pressure. So, by increasing a container’s internal surface area, we can store more gas in less space.”
A new sodium-ion battery chemistry that shows superior performance to existing state-of-the-art sodium-based batteries could be the catalyst to enabling mass-production of the emerging technology for large-scale energy storage, such as in applications including storing solar power for industrial sites.
Despite sodium’s appeal as a low-cost, abundant and environmentally friendly building block for energy storage, it is a relatively new entrant in the field of battery technology research and development.
A key issue for sodium-ion batteries is that many of the active materials used in their chemistry are sensitive to air—exposure to even a few molecules of air can degrade the material and reduce battery performance.
