We tend to be creatures of habit. In fact, the human brain has a learning system devoted to guiding us through routine, or habitual, behaviors. At the same time, the brain has a separate goal-directed system for the actions we undertake only after careful consideration of the consequences. We switch between the two systems as needed. But how does the brain know which system to give control to at any given moment? Enter The Arbitrator.
The U.S. National Institutes of Health and numerous biopharmaceutical companies and disease foundations have teamed up on an unusual project to find and bring new medicines to patients faster. The Accelerating Medicines Partnership, announced Tuesday, will focus on the early part of drug research.
Maybe you’ve seen the movies or played with toy Transformers, those shape-shifting machines that morph in response to whatever challenge they face. It turns out that DNA-repair machines in your cells use a similar approach to fight cancer and other diseases, according to research led by scientists from Lawrence Berkeley National Laboratory.
Chances are you won’t know you’ve got a staph infection until the test results come in, days after the symptoms first appear. But what if your physician could identify the infection much more quickly and without having to take a biopsy and ship it off for analysis? Researchers at the Univ. of Iowa may have found a way.
According to the National Institute of Mental Health, over 18% of American adults suffer from anxiety disorders. Previous studies of anxiety in the brain have focused on the amygdala, an area known to play a role in fear. But a team of researchers had a hunch that understanding a different brain area, the lateral septum (LS), could provide more clues into how the brain processes anxiety.
A new report says childhood cancer cases continue to increase, but death rates have fallen by half. The American Cancer Society report—released Friday—is being called one of the most comprehensive looks at the types of cancer that most commonly affect children and adolescents.
The human intestinal tract, or gut, is best known for its role in digestion. But this collection of organs also plays a prominent role in the immune system. In fact, it is one of the first parts of the body that is attacked in the early stages of an HIV infection. Knowing how the virus infects cells and accumulates in this area is critical to developing new therapies for the over 33 million people worldwide living with HIV.
Researchers at NIST and in Lithuania have used a NIST-developed laboratory model of a simplified cell membrane to accurately detect and measure a protein associated with a serious gynecological disease, bacterial vaginosis (BV), at extraordinarily low concentrations. The work illustrates how the artificial membrane could be used to improve disease diagnosis.
Cancer drugs that recruit antibodies from the body’s own immune system to help kill tumors have shown much promise in treating several types of cancer. However, after initial success, the tumors often return. A new study from Massachusetts Institute of Technology reveals a way to combat these recurrent tumors with a drug that makes them more vulnerable to the antibody treatment.
Researchers from North Carolina State Univ. have developed a de facto antibiotic “smart bomb” that can identify specific strains of bacteria and sever their DNA, eliminating the infection. The technique offers a potential approach to treat infections by multi-drug resistant bacteria.
A central question has been answered regarding a protein that plays an essential role in the bacterial immune system and is fast becoming a valuable tool for genetic engineering. A team of researchers has determined how the bacterial enzyme known as Cas9, guided by RNA, is able to identify and degrade foreign DNA during viral infections, as well as induce site-specific genetic changes in animal and plant cells.
Researchers have discovered a potential treatment for a viral infection that causes potentially fatal brain swelling and paralysis in children. The findings also point to possible treatments for related viruses including those that cause common cold symptoms. The virus, called enterovirus 71 (EV71), causes yearly outbreaks of hand, foot and mouth disease in Southeast Asian countries, including China and Malaysia.
By letting DNA strands grow together with gold, scientists in Finland have developed a new concept for super-sensitive disease diagnostics. The method relies on growth of a DNA strand over a narrow gap between two electrodes in an electric circuit. The strand will only grow if a certain DNA molecule has bound to the surface of one electrode, which makes it possible to build diagnostic tests for detection of that specific DNA molecule.
Forget being sneezed on: Government scientists are deliberately giving dozens of volunteers the flu by squirting the live virus straight up their noses. It may sound bizarre, but the rare type of research is a step in the quest for better flu vaccines. It turns out that how the body fends off influenza remains something of a mystery.
People infected with HIV can stave off the symptoms of AIDS thanks to drug cocktails that mainly target three enzymes produced by the virus, but resistant strains pop up periodically. Researchers have now focused on a fourth protein, Nef, that hijacks host proteins and is essential to HIV’s lethality. By blocking the part of a key host protein to which Nef binds, it may be possible to slow or stop HIV.
An international team of scientists has discovered that two of the world’s most devastating pandemics, the plague of Justinian and the Black Death, each responsible for killing as many as half the people in Europe, were caused by distinct strains of the same pathogen. Because these plagues were hundreds of years apart, the findings suggest a new strain of bubonic plague could emerge again in humans in the future.
Using a novel high-throughput screening process, scientists have, for the first time, identified molecules with the potential to block the accumulation of a toxic eye protein that can lead to early onset of glaucoma. Glaucoma is a group of diseases that can damage the eye’s optic nerve and cause vision loss and blindness. Elevated eye pressure is the main risk factor for optic nerve damage.
Four Univ. of Washington School of Dentistry faculty members have received a patent for a new way of using titanium-based materials to fight oral bacteria. The patent culminates several years of work in which the group studied a novel class of substances called titanates and peroxotitanates, which can inhibit bacterial growth when bound to metal ions.
Brian imaging experiments have revealed for the first time how ecstasy produces feelings of euphoria in users. The findings hint at ways that ecstasy, or MDMA, might be useful in the treatment of anxiety and post-traumatic stress disorder. MDMA has been a popular recreational drug since the 1980s, but there has been little research on which areas of the brain it affects.
Exposing skin to sunlight may help to reduce blood pressure and, thus, cut the risk of heart attack and stroke, a recently published study suggests. Research carried out at the Univs. of Southampton and Edinburgh shows that sunlight alters levels of the small messenger molecule, nitric oxide (NO) in the skin and blood, reducing blood pressure.
Scientists at The Scripps Research Institute have demonstrated the power of a new drug discovery technique, which allows them to find, relatively quickly and cheaply, antibodies that have a desired effect on cells. The TSRI scientists used the technique to discover two antibodies that protect human cells from a cold virus.
Nearly 8 million Americans suffer from post traumatic stress disorder (PTSD), a condition marked by severe anxiety stemming from a traumatic event such as a battle or violent attack. Many patients undergo psychotherapy. However, Massachusetts Institute of Technology neuroscientists have now shown that they can extinguish well-established traumatic memories in mice by giving them a type of drug called an HDAC2 inhibitor.
A small, preliminary study using gene therapy to treat a rare form of blindness is promising and could trigger similar efforts for other causes of vision loss, British doctors say. They studied just six patients. Of those, two have had dramatic improvements in their vision and none has reported any serious side effects. The study was only designed to test the treatment's safety, not its effectiveness.
The controversial notion that being overweight might actually be healthier for some people with diabetes seems to be a myth, researchers report. A major study finds there's no survival advantage to being large, and a disadvantage to being very large. More than 24 million Americans have diabetes, mostly Type 2, the kind that is on the rise because of obesity. About two-thirds of U.S. adults are overweight, including one-third who are obese.
A panel of federal experts has recommended approval for an experimental blood thinner from Merck despite serious side effects including internal bleeding. The Food and Drug Administration's panel of cardiology experts voted 10-1 Wednesday in favor of approving the pill vorapaxar to help prevent blood clots in patients with a history of heart attacks.