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Tag: "combination" at biology news

UGA researchers find that hunting can increase the severity of wildlife disease epidemics

...ailed mathematical model that demonstrates how the combination of hunting and factors such as birth season and mating season influence disease outbreaks. Their results suggest that wildlife managers and health officials use caution when considering hunting or culling as a means to manage diseases as diverse as r...

Even when faint, ovary scent draws sperm cells

...t and accurately tracking chemotactic events. This combination led to greater repeatability in the experimental conditions over the course of the assays, which is currently not possible with conventional assays. These results are an important first step toward having an easy-to-use platform to rapidly evaluate a...

T cells activated to fight HIV basis for dendritic cell therapeutic vaccine

...unity was enhanced. "Quite likely, it will be a combination of anti-viral drugs and some sort of immunotherapy, such as a therapeutic vaccine, that will be the most effective weapon against HIV," noted Dr. Rinaldo. ...

Heal thyself: Systems biology model reveals how cells avoid becoming cancerous

...ption factor is a protein that, either alone or in combination with other transcription factors, binds to one or more genes to affect the expression of that gene or genes. The discovery by Ideker's group of a huge network of transcription factor-gene interactions was made possible by new biotechnology tools tha...

Tropical forest CO2 emissions tied to nutrient increases

...at were fertilized with phosphorus, nitrogen, or a combination of the two, said Cleveland. Soil respiration was measured using plastic tubes in the ground running into vented, closed chambers. According to the National Academy of Sciences, temperatures on Earth have risen by more than 1 degree F in the past cen...

Ammonia-loving archaea win landslide majority

..., Norway. The discovery was made possible by a combination of different techniques ranging from molecular biology, biochemistry to metagenomics. Using a novel sequencing technique and bioinformatics tools, Stephan C. Schuster, associate professor of biochemistry and molecular biology at Penn State, and his c...

Tiny airborne particles are a major cause of climate change

...the Earth's surface and the upper atmosphere. This combination prevents atmospheric instability ?the condition needed to form clouds and rain. A stable atmosphere means fewer clouds; fewer clouds mean less reflection of sunlight; less reflection of sunlight and absorption of radiation lead to warming. Policy m...

Study finds that a woman's chances of having twins can be modified by diet

...ns, and that her overall chance is determined by a combination of diet and heredity. By comparing the twinning rate of vegan women, who consume no animal products, with that of women who do eat animal products, Gary Steinman, MD, PhD, an attending physician at Long Island Jewish (LIJ) Medical Center in New Hyde ...

Novel therapy combinations gain ground in treating hepatitis

...citabine, has shown anti-HCV activity alone and in combination with pegIFN (pegylated interferon) in early trials...ies: valopicitabine alone (800 mg/d), one of three combination arms with the drug at 400 mg/d, 800 mg/d or dose-ramping 400 to 800 mg/d plus pegIFN, or pegIFN with...

Spinal cord bridge bypasses injury to restore mobility

...ersity of Arkansas. The researchers employed a combination of two strategies--one old and one new--in efforts...red and the rats lost all movement gained from the combination of treatments. This provides the most conclusive evidence to date that severed nerve fibers in the s...

Survivors of childhood polio do well decades later as they age

...neurons in the brainstem; and bulbospinal polio, a combination of spinal and bulbar polios. The effects of polio run the gamut from a complete return to normal function to paralysis of limbs to acute death. Following the illness, most patients are worried about their long-term prognoses, according to Dr. Sorenso...

CHAVI announces international search for genes affecting HIV response

...h.D., director of the Duke genomics institute. The combination of large population cohorts and state-of-the-art genome technology will allow us to dissect the genetic factors that contribute to disease." CHAVI also will establish an even larger cohort of HIV-infected patients in Africa and perform the same gene...

Neurons grown from embryonic stem cells restore function in paralyzed rats

...ohns Hopkins University School of Medicine, used a combination of transplanted motor neurons, chemicals capable o...of paralyzed rats. Each group received a different combination of treatments. Some groups received injections of a drug called rolipram under the skin before and a...

Rehydrate -- your RNA needs it

... explored the new roles of water molecules using a combination of computational simulations and a technique called single-molecule fluorescence resonance energy transfer (FRET), which allowed the researchers to directly observe and measure how quickly the ribozyme switched forms and how the rates changed when va...

Despite acidity, orange juice could still be a source of foodborne disease

... that, because their acidity, moisture level, or a combination of both, are incapable of supporting the growth of foodborne pathogens or toxin production without storage time and temperature controls are defined by the U.S. Food Code as non-potentially hazardous foods. But this designation also includes foods t...

New genetic test for breast cancer

...t clearly indicates the most effective therapy: a combination of chemotherapy and hormones for women with high scores, and hormones alone for women with low scores," Dr. Sparano said. "But about 45 percent of women receive scores that range from 11 to 25, where the treatment path is not so clear. Our study is...

Computational model simulates AZT metabolism in mitochondria

...s responsible for the toxicity, but that instead a combination of multiple effects is needed. That is the kind of problem that needs a systems biology approach." When AZT reaches a cell, it is subject to some of the same metabolic modifications or phosphorylation events that are encountered by the four natur...

Brain enzyme treatment relieves memory lapse in Alzheimer's mice

...roaches to Alzheimer's disease, either alone or in combination with therapies that alter Aß levels." ...

Pest control research leads to pain control discovery

...this is a novel way to reduce inflammation, with a combination therapy," Schmelzer said. "We're going after a new... designed to evaluate the therapeutic potential of combination treatment with NSAIDs and enzyme inhibitors (a previously undescribed soluble epoxide hydrolase inhi...

Purdue creates new low-cost system to detect bacteria

..."You could describe the face as being made up of a combination of geometric shapes, like ovals, squares and triangles, but each face has a unique blend of these shapes. We did something similar. We reduced complicated scatter patterns to 120 numbers based on Zernike polynomials." This reduced collection of num...

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