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Tag: "limit" at biology news

Topical treatment shown to inhibit HIV and herpes simplex virus infection

...uld potentially increase susceptibility to HIV and limit any protective effect of microbicides." said Betsy Herold, M.D., Professor of Medicine and Chief of Pediatric Infectious Disease at Mount Sinai and the senior investigator on this study. "We are currently conducting a 14-day study to assess whether o...

Antibiotic Resistant Bacterium Uses Sonar-like Strategy to “See?Enemies or Prey

...tion?mechanism, should preventtoxin production and limit the severity of infection,?says MichaelGilmore, PhD, lead author of the study, and currently director ofresearch at the Schepens Eye Research Institute and professor ofophthalmology at Harvard Medical School. Gilmore and his team have spent years st...

Studies reveal methods viruses use to sidestep immune system

...arts of the pathway to target with drugs to try to limit infection." Drugs called protease inhibitors currently are used to treat patients infected with HIV and have also shown promise in treating hepatitis C patients in experimental trials. "We now know that treating patients with a protease inhibitor w...

Deficiency of growth hormone and IGF-1 reduces cancer and kidney disease, but creates other problems

...mones also increase cancer and other diseases that limit lifespan. The researchers developed a strain of dwarf rats that were naturally deficient in both growth hormone and in IGF-1. To mimic the rise in growth hormone and IGF-1 during adolescence in normal rats, some of these deficient rats were given gr...

Breakthrough method in nanoparticle synthesis paves the way for new pharmaceutical and biomedical applications

...r mesoporous structure, while the other is used to limit the growth of the particles to nanometer dimensions. This method can be used to create a variety of nanoparticles with enormous surface areas, and very well-defined pore size and structure. One important application of these nanoporous nanoparticle...

In the migratory marathon, parasitized monarchs drop out early

...nimal migration is whether these long journeys can limit the spread of parasites by weeding out diseased animals. Monarch butterflies in eastern North America fly up to thousands of kilometers from Canada to Central Mexico ?one of the longest migrations of any insect species. Emory University researchers f...

Not-for-profit publishers call NIH public access rule a missed opportunity

...e articles based on NIH funded research; # It will limit the ability of scientific societies to partner with NIH to nurture the next generation of scientists and future NIH grantees; and # It will create confusion and put authors at risk of inadvertently violating copyright agreements. "This is a missed o...

Polymers with copper show promise for implanted sensors

...those materials have some characteristics that may limit their usefulness. "In some instances, the chemistry in the polymer is sensitive to moisture and heat, so whether it can be easily commercialized is one of the big issues," he said. In addition, the polymer coating must be very thin for most biomedica...

Insight into natural cholesterol control suggests novel cholesterol-lowering therapy

...ovided insight into a key mechanism by which cells limit cholesterol synthesis. The finding suggests a novel approach to the development of cholesterol-lowering drugs that may boost the effect of statins, one of the most prescribed cholesterol inhibitors, according to researchers at the University of Texas...

Technique may allow cancer patients to freeze eggs, preserving fertility before starting treatment

...nts to stimulate mature egg production. This could limit its applications for some women. Researchers question if it is appropriate for women with cancers fueled by estrogen, such as breast cancer. In addition, the hormone treatments require delaying the start of cancer therapy, which may not be an option ...

Anammox bacteria produce nitrogen gas in oceans' snackbar

...basis for any lifeform on earth as these compounds limit the overall growth rate. The researchers discovered this type of bacteria for the first time a few years ago in the oxygen poor Black Sea and now also in the open ocean. This discovery has major consequences for our understanding of the global nitro...

Genetic therapy reverses nervous system damage in animal model of inherited human disease

..." Wolfe said. "We believe, however, we can further limit the number of injections by the use of strong promoters that could increase the amount of enzyme that comes from corrected cells." Although encouraged by their findings, the researchers note that any clinical trials in humans might be years in the f...

Scripps scientists find potential for catastrophic shifts in Pacific ecosystems

...yzing this data with these methods that there is a limit as to what our understanding of the physical and biological interactions is going to be," say the researchers. "It appears we will never be able to explain these processes in a clean and simple way." Still, there is room for optimism. The authors bel...

Ebola virus: from wildlife to dogs

...l of epidemics by isolation of disease victims can limit its spreading. Since 2001, IRD research scientists and their partners (1) have been working to unravel the virus's biological cycle, in other words the whole range of ways in which the virus circulates in its natural environment, from its natural ho...

Study Finds Moderate Hypothermia A Safe Treatment For Traumatic Brain Injury In Kids

...esearch has produced evidence that hypothermia may limit some of these deleterious metabolic responses. The trial, which is the only multi-center clinical trial involving children underway in the United States, was conducted to determine whether moderate hypothermia (32-33 degrees Celsius) begun in the ea...

Modified collagen could yield important medical applications

...actions, techniques that may damage the protein or limit its safe use in humans. Yu's method, however, requires only physical mixing of collagen with even smaller molecules called collagen mimetic peptides. "That's the beauty of this," said Yu, an assistant professor in the Department of Materials Science...

Unusual antibiotics show promise against deadly 'superbugs'

...actions, techniques that may damage the protein or limit its safe use in humans. Yu's method, however, requires only physical mixing of collagen with even smaller molecules called collagen mimetic peptides. "That's the beauty of this," said Yu, an assistant professor in the Department of Materials Science...

Insulin pulses keep the liver lean

...vered a new mechanism whereby acute insulin pulses limit fat synthesis in the liver. This protective mechan... mice lacking CEACAM1, insulin lost its ability to limit liver FAS activity. Obese mice and those with too much insulin also failed to exhibit a reduction in...

New Scripps Oceanography project to study sediments and ecosystem restoration in Venice lagoon

...ofessor) Walter Munk's recommendations of gates to limit the effects of flooding at Venice in the early '70s, to nondestructive cleaning of statuary with lasers and (Scripps Research Geodesist) Yehuda Bock's use of global positioning system technology to measure the actual rate of sinking, to today's under...

US Army plans to bulk-buy anthrax

...stions over its commitment to treaties designed to limit the spread of biological weapons. A series of contracts have been uncovered that relate to the US army' Dugway Proving Ground in Utah. They ask companies to tender for the production of bulk quantities of a non-virulent strain of anthrax, and for e...

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