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Tag: "presents" at biology news

Hepatitis B accounts for 40 percent of 'missing' Asian women

...epresentation of males: the hepatitis B virus. She presents new evidence, consistent with existing scientific literature, that carriers of the hepatitis B virus are 1.5 times more likely to have a male child. This evidence includes both cross-country analyses and natural experimentation based on recent vaccin...

Chlamydia parasite lives off our fat

...paired bacterial growth. That finding immediately presents a new target for anti-Chlamydia drugs but it also suggests an entirely novel pathogenic mechanism. "We propose that Chlamydia use lipid droplets in a previously unknown pathway for lipid acquisition," says Kumar. "Alternatively, it is possible that t...

Researchers develop new method to help find deadly malaria parasite's Achilles heel

...mplexes may be of particular interest. "Plasmodium presents many of these proteins to the red blood cell during infection and prior to replication," he said. "What really jumps out of our paper is the large number of membrane protein interactions in Plasmodium that are absent in other organisms. While this is...

UW scientists unravel critical genetic puzzle for flu virus replication

...ion of the journal Nature, is important because it presents opportunities to design new antiviral drugs and harness flu viruses for speedier, more efficient vaccine production. The work is especially critical as the biomedical community and governments worldwide develop strategies to cope with the prospect of...

For one Stanford doctor, the beat goes on during open-heart surgery

...ecent report in the new journal Innovations, which presents an analysis by an international group of doctors of more than 150 previous studies of the procedure. It found that the beating-heart technique is as safe as conventional heart surgery, with fewer complications and lower costs. The consensus report, ...

Growing crops to cope with climate change

...llow, BBSRC Chief Executive, said, "Climate change presents a huge challenge for the world. Although every effort must be concentrated on reducing the impact of human activity on the environment, science should also be answering questions about how we can live in an altered climate. Research such as this help...

Darkness unveils vital metabolic fuel switch between sugar and fat

...l metabolic signal that emerged from the dark also presents a new target for obesity and type 2 diabetes research. A series of experiments pinpointed 5-prime adenosine monophosphate (5'-AMP) as the key molecular mediator of the constant darkness effect, switching mice from a glucose-burning, fat-storing stat...

Avian influenza virus in mammals spreads beyond the site of infection to other organ systems

...arding how influenza is spread and how the disease presents itself. Rimmelzwaan and colleagues caution that because of the systemic nature of avian influenza, "H5N1 virus infection needs to be included in the differential diagnosis of a broader range of clinical presentations than is currently done." In ad...

Researchers discover way to transport environmental arsenic to plant leaves in new clean-up strategy

...ol in cleaning up thousands of sites where arsenic presents serious dangers to human health. The research was just published in the Proceedings of the National Academy of Sciences (PNAS). Other authors of the paper include Om Parkash Dhankher and Elizabeth McKinney from the department of genetics at UGA and ...

Vital ocean prey play active role in environment

...Stephen Nicol of the Australian Antarctic Division presents a new conceptual model of the species' life history that emphasizes krill's active role in exploiting a highly seasonal environment. Nicol's model separates the species into different life stages: larvae, juveniles, gravid females, and other adults...

Mystery solved: Gold's power against autoimmune diseases defined

...treatment can take months for action and sometimes presents severe side effects which have diminished their use in recent years. With this new understanding of how these metals function, it may now be possible to develop a new generation of gold-based drugs for treating rheumatoid arthritis and other autoimm...

APS lecturer shows rare video of 'teacher-student' immune cell interactions in live animal

...h, Boston, MA. The American Physiological Society presents the Henry Pickering Bowditch Award for early-caree...n the dendritic cell arrives at the lymph node, it presents the dismembered invader to the T and B white blood cells in a way that rings the alarm about the int...

Rice scientists make first nanoscale pH meter

...ears online this week in the journal Nano Letters, presents biologists with the first potential means of measuring accurate pH changes over a wide pH range in real-time inside living tissue and cells. "Almost every biologist I speak with comes up with one or two things they'd like to measure with this," said...

Viral genetic differences are possible key to HIV dementia

... "The identification of these signature mutations presents convincing evidence that HIV adapts to the local environment within the central nervous system and, moreover, that commonalities in this environment exist across individuals," he asserts. Another mutation in the V3 loop appeared consistently in vir...

Microbes hitchhike across Atlantic on desert dust

...or Microbiology in Orlando, Florida. "This study presents evidence of early summer survival and transport of microorganisms from North Africa to a mid-Atlantic research site," says Dale Griffin of the U.S. Geological Survey in St. Petersburg, Florida, one of the researchers on the study. Griffin and his co...

Ecologists home in on how sperm whales find their prey

...on. Recording vocalisations of diving sperm whales presents a non-invasive opportunity to document feeding activity." says Watwood. ...

Parallel evolution: Proteins do it, too

... 11, evolutionary biologist Jianzhi (George) Zhang presents evidence for one such instance in a gene for an enzyme that helps leaf-eating monkeys digest their food. "We know that parallel, or convergent, evolution is very common at the level of morphology---birds can fly, insects can fly, bats can fly, and t...

AIDS study challenges conventional treatment guidelines for HIV patients

...ld encounter in clinical practice, where a patient presents with an initial set of laboratory results and the clinician must try to predict how quickly that person's CD4 cell count will reach the danger level at which treatment for HIV becomes most critical. Current clinical practice, based on previous work f...

Obesity levels in US are grossly underestimated

...r than previously estimated. The research, which presents the first-ever corrected estimates of obesity for individual states, found that Southern states have the highest levels of obesity in the country. Using the authors' corrected data for 2000, the highest obesity levels for men were found in Texas (31%...

Gene therapy study takes aim at prostate cancer

..." said Kadmon. He said they do not think the study presents a significant risk. They will inject the virus-gene compound directly into the prostate. While there is a risk of infection with the injection, he said patients will receive antibiotics. Most patients will have some fever after the injection, but ...

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