Virologists and biologists in California have identified a highly abundant, never-before-described virus that could play a major role in obesity, diabetes. The virus, named crAssphage, has about 10 times as many base pairs of DNA as HIV and infects one of the most common types of gut bacteria. This phylum of bacteria is thought to be connected with obesity, diabetes and other gut-related diseases.
If you’re allergic to dust mites, help may be on the way. Researchers at the Univ. of Iowa have...
The most advanced vaccine for dengue only offers modest protection but could still help millions...
When it comes to flu vaccines, a federal panel says a squirt in the nose is better than a shot in the arm for young children. The advisory panel agreed Wednesday to tell doctors that FluMist nasal spray is a bit better at preventing flu in healthy young kids. The advice is specific to children ages 2 through 8.
Responding to a major case of research misconduct, federal prosecutors are taking a rare step by charging a scientist with fraud after he admitted falsifying data while researching an HIV vaccine. Authorities say former Iowa State Univ. laboratory manager Dong-Pyou Han has confessed to manipulating data that helped his team get millions in grants and increased hopes of a major breakthrough in AIDS research.
An international team of scientists, led by researchers at the Univ. of California, San Diego School of Medicine, have identified the genes encoding a molecule that famously defines Group A Streptococcus (strep), a pathogenic bacterial species responsible for more than 700 million infections worldwide each year.
A new technology developed in Denmark uses the HIV virus as a tool in the fight against hereditary diseases and, in the long term, against HIV infection as well. The technology repairs the genome in a new and safer manner by using the virus as nanoparticles to manage the “cut and paste” approach to modifying the genome.
Health officials on Friday confirmed the first case of an American infected with a mysterious Middle East virus. The man fell ill after arriving in the U.S. about a week ago from Saudi Arabia where he is a health care worker. The man is hospitalized in Indiana with Middle East respiratory syndrome, or MERS, according to the Centers for Disease Control and Prevention, which is investigating the case along with Indiana health officials.
Johns Hopkins Univ. biochemists have figured out what is needed to activate and sustain the virus-fighting activity of an enzyme found in CD4+ T cells, the human immune cells infected by HIV. The discovery could launch a more effective strategy for preventing the spread of HIV in the body with drugs targeting this enzyme, they say.
Researchers in Finland have succeeded in creating a surface on nano-sized cellulose crystals that imitates a biological structure. The surface adsorbs viruses and disables them, preventing their spread into cells. The results could prove useful in the development of antiviral ointments and surfaces.
Chemotherapeutic drugs excel at fighting cancer, but they're not so efficient at getting where they need to go. Now, researchers are developing a better delivery method by encapsulating the drugs in nanoballoons – which are tiny modified liposomes that, upon being struck by a red laser, pop open and deliver concentrated doses of medicine.
Bacteriophages are viruses that target and kill bacteria. Recent research at Purdue Univ. shows that treating food products with select bacteriophages could significantly reduce concentrations of E. coli. The study demonstrated that an injection of bacteriophages nearly eradicated a toxin-producing strain of E. coli in contaminated spinach and ground beef, in some cases decreasing E. coli concentrations by about 99%.
Researchers in Sweden have designed a paper filter which is capable of removing virus particles with the efficiency matching that of the best industrial virus filters. The paper filter, which is manufactured according to traditional paper making processes, consists of 100% high purity cellulose nanofibers directly derived from nature.
A multinational research team led by Duke Medicine scientists has identified a subclass of antibodies associated with an effective immune response to an HIV vaccine. The finding helps explain why a combination of two vaccines was able to show some effect, when one vaccine alone did not. The study also provides key insights that could aid development of new vaccines.
Pfizer Inc. said Wednesday that its blockbuster vaccine against pneumonia, blood and other infections met its goal of preventing illness in vulnerable elderly patients in a huge study required by U.S. regulators. The New York-based company's Prevnar 13 protects against 13 strains of pneumococcal disease, which can cause painful children's ear infections, pneumonia and life-threatening bloodstream infections.
The annual ritual of visiting a doctor’s office or health clinic to receive a flu shot may soon be outdated, thanks to the findings of a new study. The research, which involved nearly 100 people recruited in the metropolitan Atlanta area, found that test subjects could successfully apply a prototype vaccine patch to themselves.
An extremely rare, polio-like disease has appeared in more than a dozen California children within the past year and paralyzed one or more of each child's arms or legs, Stanford Univ. researchers say, but public health officials haven't identified any common causes connecting the cases.
As the flu season winds down, health officials say it wasn't as bad as last year and the vaccine worked better. But younger adults were hit harder because of a surge of swine flu. Overall, hospitalization rates for the flu are only about half what they were last winter. It has been a fairly mild season for the elderly—usually the most vulnerable group to flu and its complications.
Many vaccines consist of a killed or disabled version of a virus. However, for certain diseases, this type of vaccine is ineffective, or just too risky. An alternative, safer approach is a vaccine made of small fragments of proteins produced by a disease-causing virus or bacterium. This has worked for some diseases, but in many cases these vaccines don’t provoke a strong enough response. Until now.
On the eve of the 25th World AIDS Day (December 2014), President Barack Obama expressed hope to our nation, proclaiming that an “AIDS-free generation is within our reach.” During his speech, Obama expressed how our nation has made significant strides toward strengthening scientific investments, building effective HIV/AIDS education and prevention programs and bringing together public and private stakeholders.
In 2011, biologists at Caltech demonstrated a highly effective method for delivering HIV-fighting antibodies to mice—a treatment that protected the mice from infection by a laboratory strain of HIV delivered intravenously. Now the researchers have shown that the same procedure is just as effective against a strain of HIV found in the real world, even when transmitted across mucosal surfaces.
Duke Univ. scientists have taken aim at what may be an Achilles' heel of the HIV virus. Combining expertise in biochemistry, immunology and advanced computation, researchers at Duke have determined the structure of a key part of the HIV envelope protein, the gp41 membrane proximal external region (MPER), which previously eluded detailed structural description.
Vaccines combat diseases and protect populations from outbreaks, but the life-saving technology leaves room for improvement. Vaccines usually are made en masse in centralized locations far removed from where they will be used. They are expensive to ship and keep refrigerated and they tend to have short shelf lives. However, Univ. of Washington engineers have developed hope for on-demand vaccines.
Developed by a team of researchers in Massachusetts and California, “nanotraps” are nanoparticles that act as viral traps using specific molecules found naturally within the human body. Initial testing on the treatments, which each use tiny, non-toxic particles that can be injected, inhaled, or eaten, has shown them to be effective and safe against a multitude of strains of disease.
Can an experimental drug developed to treat epilepsy block the AIDS virus? A preliminary lab study suggests it's possible, and researchers are eager to try it in people. When tested in human tissues in the laboratory, the drug "works beautifully" to prevent HIV from destroying key cells of the immune system.
In early March, in a rural Mississippi hospital, an infant was born to an HIV-infected mother. The chances of an infant contracting HIV from an infected mother not receiving antiretroviral treatment is around 25% in the U.S., and this child was on the wrong end of that statistic. Dr. Deborah Persaud, a Johns Hopkins Children’s Center HIV expert, knew that meant this baby would only have a 50% chance of living past the age of nine years.
Researchers have determined the structure of the rubella virus capsid protein, which is central to the virus's ability to assemble into an infectious particle and to infect humans. Although a successful vaccine is available to protect against rubella virus infection, the discovery could aid efforts to develop vaccines and antiviral drugs to treat related infections.
A government study offers a new theory on why the whooping cough vaccine doesn't seem to be working as well as expected. The research suggests that while the vaccine may keep people from getting sick, it doesn't prevent them from spreading whooping cough—also known as pertussis—to others.
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