A new study by a team of scientists defines previously unknown properties of transmitted HIV-1, the virus that causes AIDS. The viruses that successfully pass from a chronically infected person to a new individual are both remarkably resistant to a powerful initial human immune-response mechanism, and they are blanketed in a greater amount of envelope protein that helps them access and enter host cells.
They sweep. They swab. They sterilize. And still the germs persist. ...
A new study by a team of scientists defines previously unknown properties of...
Pneumonia and other infections sometimes provoke an inflammatory response from the...
More than a decade ago, British parents refused to give measles shots to at least a million children because of now discredited research that linked the vaccine to autism. Now, health officials are scrambling to catch up and stop a growing epidemic of the contagious disease.
An international team of scientists using a new X-ray method recorded the internal structure and cell movement inside a living frog embryo in greater detail than ever before. This result showcases a new method to advance biological research and the search for new treatments for genetic diseases.
Injectable nanoparticles developed at Massachusetts Institute of Technology may someday eliminate the need for patients with Type 1 diabetes to constantly monitor their blood-sugar levels and inject themselves with insulin. The nanoparticles were designed to sense glucose levels in the body and respond by secreting the appropriate amount of insulin.
Cancer patients could face high costs for medications under President Barack Obama's health care law, industry analysts and advocates warn. Where you live could make a huge difference in what you'll pay. To try to keep premiums low, some states are allowing insurers to charge patients a hefty share of the cost for expensive medications used to treat cancer, multiple sclerosis, rheumatoid arthritis, and other life-altering chronic diseases.
In the summer of 1968, a new strain of influenza appeared in Hong Kong. This strain, known as H3N2, spread around the globe and eventually killed an estimated 1 million people. A new study from Massachusetts Institute of Technology reveals that there are many strains of H3N2 circulating in birds and pigs that are genetically similar to the 1968 strain and have the potential to generate a pandemic if they leap to humans.
Historians and doctors have debated for decades what medical complications caused the death of legendary Confederate fighter Thomas J. "Stonewall" Jackson, felled by friendly fire from his troops during the Civil War. Shot three times while returning from scouting enemy lines in the Virginia wilderness, Jackson was badly wounded in the left arm by one of the large bullets the night of May 2, 1863.
Researchers have made a significant first step with newly engineered biomaterials for cell transplantation that could help lead to a possible cure for Type 1 diabetes, which affects about 3 million Americans. Georgia Institute of Technology engineers and Emory University clinicians have successfully engrafted insulin-producing cells into a diabetic mouse model, reversing diabetic symptoms in the animal in as little as 10 days.
In a promising development for diabetes treatment, researchers have developed a network of nanoscale particles that can be injected into the body and release insulin when blood-sugar levels rise, maintaining normal blood sugar levels for more than a week in animal-based laboratory tests.
Simply sending children with asthma a text message each day asking about their symptoms and providing knowledge about their condition can lead to improved health outcomes. In a study, pediatric patients who were asked questions about their symptoms and provided information about asthma via SMS text messages showed improved pulmonary function and a better understanding of their condition within four months.
Almost three weeks after China reported finding a new strain of bird flu in humans, experts are still stumped by how people are becoming infected when many appear to have had no recent contact with live fowl and the virus isn't supposed to pass from person to person.
A new case of bird flu in China's capital, a 4-year-old boy who displayed no symptoms, is adding to the unknowns about the latest outbreak that has caused 63 confirmed cases and 14 deaths, health officials said Monday. The boy, who tested positive for the H7N9 virus, is considered a carrier of the strain and has been placed under observation to see if he develops symptoms, health authorities said.
Observing the evolution of a particular type of antibody in an infected HIV-1 patient has provided insights that will enable vaccination strategies that mimic the actual antibody development within the body. Spearheaded by Duke University, the multi-institution study included analysis from Los Alamos National Laboratory and used high-energy X-rays from the Advanced Photon Source at Argonne National Laboratory.
A new global plan aims to end most cases of polio by late next year, and essentially eradicate the paralyzing disease by 2018 — if authorities can raise the $5.5 billion needed to do the work, health officials said Tuesday. Part of the challenge will be increasing security for vaccine workers who have come under attack in two of the hardest-hit countries. And the plan calls for changing how much of the world protects against polio, phasing out the long-used oral vaccine in favor of a pricier but safer shot version.
The Food and Drug Administration on Friday approved a first-of-its-kind diabetes drug from Johnson & Johnson that uses a new method to lower blood sugar—flushing it out in patients' urine. The agency cleared J&J's Invokana tablets for adults with Type 2 diabetes, which affects an estimated 26 million Americans. The once-a-day medication works by blocking the kidneys from reabsorbing sugar, which occurs at higher levels in patients with diabetes than in healthy patients.
Scientists from the University of Bath have developed a new technique that could be used in blood tests to detect a range of age-related conditions such as diabetes, dementia, and Alzheimer's. In the process of aging, proteins in the body react with sugars in a process called glycation. This damages the protein's function which in some diseases can trigger complications such as inflammation and premature aging.
The Food and Drug Administration said Wednesday it approved a new drug from Biogen Idec to control multiple sclerosis in adults with hard-to-treat forms of the disease. The twice-a-day capsules, called Tecfidera, offer a new option for multiple sclerosis, a debilitating disease in which the body attacks its own nervous system.
New research findings may help scientists design drugs to treat a virus infection that causes potentially fatal brain swelling and paralysis in children. The virus, called enterovirus 71, causes hand, foot, and mouth disease and is common throughout the world. Although that disease usually is not fatal, the virus has been reported to cause fatal encephalitis in infants and young children, primarily in the Asia-Pacific region. Currently, no cure exists for the infection. However, new findings show the precise structure of the virus bound to a molecule that inhibits infection.
The drug-resistant bacteria known as MRSA, once confined to hospitals but now widespread in communities, will likely continue to exist in both settings as separate strains, according to a new study. Researchers at Princeton University used mathematical models to explore what will happen to community and hospital MRSA strains, which differ genetically.
Archaeologists recently unearthed a “Black Death” grave in London, containing more than a dozen skeletons of people suspected to have died from the plague. The victims are thought to have died during the 14th century and archaeologists anticipate finding many more as they excavate the site. Results of their reveal a number of factors that show we are still at risk of plague today.
Biogen Idec has filed for federal marketing approval of a longer-lasting treatment for hemophilia A. Biogen says the drug rFVIIIFc can be injected once or twice a week, while other treatments for hemophilia A need to be injected three or four times a week. The drug could be the first major advance in the treatment of hemophilia in more than 20 years.
New work from the Broad Institute and partnering organizations has expanded the understanding of how one type of immune cell—known as a T helper 17 or Th17 cell—develops, and how its growth influences the development of immune responses. By figuring out how these cells are “wired,” the researchers make a surprising connection between autoimmunity and salt consumption.
A simple new method better assesses the risks posed by emerging zoonotic viruses Researchers show that the new tool can produce transmissibility estimates for swine flu, allowing researchers to better evaluate the possible pandemic threat posed by this virus. ntil now, estimates of transmissibility were derived from detailed outbreak investigations, which are resource intensive and subject to selection bias.
In systemic lupus erythematosus, the body attacks itself for largely mysterious reasons, leading to serious tissue inflammation and organ damage. Current drug treatments address symptoms only and can require life-long daily use at toxic doses. Now, scientists at Yale University have designed and tested a drug delivery system that uses biodegradable nanoparticles to deliver low drug doses. The method shows early promise for improved treatment of lupus and other chronic, uncured autoimmune diseases.
Defective viruses have genetic mutations or deletions that eliminate their essential viral functions. Thought for decades to be essentially garbage unrelated to the transmission of normal viruses, new research shows that they now appear able to play an important role in the spread of disease.
A homebrewed diagnostic mixture containing a single drop of blood, a dribble of water, and a dose of DNA powder with gold particles could mean rapid diagnosis and treatment of the world's leading diseases in the near future. The cocktail diagnostic is being developed at the University of Toronto and it involves the same technology used in over-the-counter pregnancy tests.