Therapeutic agents intended to reduce dental plaque and prevent tooth decay are often removed by saliva and the act of swallowing before they can take effect. But a team of researchers has developed a way to keep the drugs from being washed away. Dental plaque is made up of bacteria enmeshed in a sticky matrix of polymers, a polymeric matrix, that is firmly attached to teeth.
Analyzing people’s keystrokes as they type on a computer keyboard can reveal a great deal of...
The protein haptoglobin boosts inflammation in transplanted hearts, reducing their survival,...
Complex brain disorders, such as autism or schizophrenia, still puzzle scientists because their...
Many studies show that video gamers perform better than non-gamers on certain visual tasks, like managing distractors and identifying targets, but a small new Brown Univ. study provides gamers with some cognitive bonus points. The study results suggest that gaming not only improves their visual skill but also may improve their learning ability for those skills.
When weighing the pluses and minuses of your skin add this to the plus column: Your skin, like that of all vertebrates, is remarkably resistant to tearing. Now, a collaboration of researchers at Lawrence Berkeley National Laboratory and the Univ. of California, San Diego, has shown why.
Researchers at the National Univ. of Singapore have discovered that the inherent handedness of molecular structures directs the behavior of individual cells and confers them the ability to sense the difference between left and right. This is a significant step forward in the understanding of cellular biology.
Memory and as well as connections between brain cells were restored in mice with a model of Alzheimer’s given an experimental cancer drug, Yale School of Medicine researchers reported in the Annals of Neurology. The drug, AZD05030, developed by Astra Zeneca proved disappointing in treating solid tumors but appears to block damage triggered during the formation of amyloid-beta plaques, a hallmark of Alzheimer’s disease.
The decades worth of data that has been collected about the billions of neurons in the brain is astounding. To help scientists make sense of this “brain big data,” researchers at Carnegie Mellon Univ. have used data mining to create www.neuroelectro.org, a publicly available Website that acts like Wikipedia, indexing physiological information about neurons.
Scientists from the Florida campus of The Scripps Research Institute have uncovered the unique mechanism of a powerful natural product with wide-ranging antifungal, antibacterial antimalaria and anticancer effects. The new study sheds light on the natural small molecule known as borrelidin.
An experimental drug rapidly shrinks most tumors in a mouse model of human breast cancer, researchers report in the Proceedings of the National Academy of Sciences. When mice were treated with the experimental drug, BHPI, the tumors immediately stopped growing and began shrinking rapidly.
A vibrational spectroscopic imaging technology that can take images of living cells could represent an advanced medical diagnostic tool for the early detection of cancer and other diseases. High-speed spectroscopic imaging makes it possible to observe the quickly changing metabolic processes inside living cells and to image large areas of tissue, making it possible to scan an entire organ.
Researchers studying cancer and other invasive diseases rely on high-resolution imaging to see tumors and other activity deep within the body's tissues. Using a new high-speed, high-resolution imaging method, a team at Washington Univ. in St. Louis were able to see blood flow, blood oxygenation, oxygen metabolism and other functions inside a living mouse brain at faster rates than ever before.
Scientists have developed tiny nanoneedles that have successfully prompted parts of the body to generate new blood vessels, in a trial in mice. The researchers, from Imperial College London and Houston Methodist Research Institute, hope their nanoneedle technique could ultimately help damaged organs and nerves to repair themselves and help transplanted organs to thrive.
Univ. of Notre Dame applied mathematician Mark Alber and environmental biotechnologist Robert Nerenberg have developed a new computational model that effectively simulates the mechanical behavior of biofilms. Their model may lead to new strategies for studying a range of issues from blood clots to waste treatment systems.
Using high-performance computing and genetic engineering to boost the photosynthetic efficiency of plants offers the best hope of increasing crop yields enough to feed a planet expected to have 9.5 billion people on it by 2050, researchers report in Cell.
Scientists working at NIST and the NIH have devised and demonstrated a new, shape-shifting probe, about one-hundredth as wide as a human hair, which is capable of sensitive, high-resolution remote biological sensing that is not possible with current technology. If eventually put into widespread use, the design could have a major impact on research in medicine, chemistry, biology and engineering.
New research has identified some of the processes by which molecules associated with neurological diseases can disrupt the biological clock, interfere with sleep and activity patterns and set the stage for a spiral of health concerns that can include a decreased lifespan and Alzheimer’s disease.
Traditionally, to understand how a gene functions, a scientist would breed an organism that lacks that gene, “knocking it out”, then ask how the organism has changed. Are its senses affected? Its behavior? Can it even survive? Thanks to the recent advance of gene editing technology, this gold standard genetic experiment has become much more accessible in a wide variety of organisms.
HIV can establish itself in the brain as soon as four months after initial infection; a finding that dampens hopes of an impending cure for a disease that afflicts more than 35 million people. Within two years of infection, a genetically distinct version of HIV replicates in the brains of as many as one in four patients.
Imaging tests like mammograms or CT scans can detect tumors, but figuring out whether a growth is or isn't cancer usually requires a biopsy to study cells directly. Now results of a Johns Hopkins Univ. study suggest that MRI could one day make biopsies more effective or even replace them altogether by noninvasively detecting telltale sugar molecules shed by the outer membranes of cancerous cells.
Big data: It's a term we read and hear about often, but is hard to grasp. Computer scientists at Washington Univ. in St. Louis tackled some big data about an important protein and discovered its connection in human history as well as clues about its role in complex neurological diseases.
Federal officials plan to review the safety and evidence behind alternative remedies like Zicam and Cold-Eeze, products that are protected by federal law, but not accepted by mainstream medicine. The Food and Drug Administration announced Thursday that it will hold a two-day meeting next month on regulations for homeopathic medicines, which have long occupied a place on the fringes of U.S. health care.
For living organisms proteins are an essential part of their body system and are needed to thrive. In recent years, a certain class of proteins has challenged researchers’ conventional notion that proteins have a static and well-defined structure. It’s thought that mutations in these proteins, known as intrinsically disordered proteins, are associated with neurodegenerative changes, cardiovascular disorders and diseases like cancer.
Health officials have discovered a new germ in Eastern Europe that is related to the dreaded smallpox and monkeypox viruses but so far seems far less threatening. The germ caused two cattle herders to suffer fever, swollen lymph nodes and painful boils on their hands and arms in 2013.
The global pharmaceutical industry is pouring billions of dollars into developing treatments for rare diseases, which once drew little interest from major drugmakers but now point the way toward a new era of innovative therapies and big profits. The investments come as researchers harness recent scientific advances.
By looking at the molecular aftermath of concussion in an unusual way, a team of researchers at Brown Univ. and the Lifespan health system has developed a candidate panel of blood biomarkers that can accurately signal mild traumatic brain injury within hours using standard, widely available lab arrays. The results appear in the Journal of Neurotrauma.
Carbon nanotube fibers invented at Rice Univ. may provide a way to communicate directly with the brain. The fibers have proven superior to metal electrodes for deep brain stimulation and to read signals from a neuronal network. Because they provide a two-way connection, they show promise for treating patients with neurological disorders while monitoring the real-time response of neural circuits in areas that control movement and mood.
In the on-going search for a better understanding of how the brain and central nervous system develop, a potentially powerful new tool could soon be available. Researchers at Lawrence Berkeley National Laboratory have discovered a light-sensitive opsin protein that plays a surprising and possibly critical role in neuron maturation and circuit formation.
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