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Tag: "affect" at biology news

UGA scientists unravel 'molecular inch-worm' structure of walking-pneumonia bacterium

...student Jarrat Jordan. M. pneumoniae infections affect millions worldwide, causing chronic bronchitis and atypical or "walking pneumonia," a term that describes cases of pneumonia that are distinct from acute, life-threatening pneumonia requiring a patient's hospitalization. Krause and others have bee...

Minorities, uninsured less likely to receive care at high-volume hospitals

... information in the article. These differences may affect the ability to access or receive care at a high-volume hospital. Jerome H. Liu, M.D., M.S.H.S., of the David Geffen School of Medicine at the University of California-Los Angeles, and colleagues conducted a study to determine whether the use of hig...

USC team reveals structure of APOBEC family protein

... genetic mutations common in HIGM-2 patients might affect the structure, and therefore the function, of the AID enzyme. A professor of biological sciences and chemistry at USC College, Goodman has previously done groundbreaking work on AID and the related Apo3 APOBEC enzymes. Using the Apo2 results as a ...

Second opinion yields treatment changes for half of patients

...nce in how the cancer is staged, which in turn can affect treatment recommendations. In this study, the tumor board pathologists interpreted test results differently in 29 percent of patients. For some patients, this meant a change in diagnosis, for other patients it affected the aggressiveness of their tum...

When nerve cells can't make contact

...hese signal molecules reach the receiving cell and affect its activity status - provided the receiving cell has "aerials" on its synapses - receptors that bind the chemical signals. The scientists speculated that this process could be disrupted if the nerve cells have no neuroligins. At the time of Bourge...

High dopamine transporter levels not correlated with ADHD

...cal disease or other medical conditions that could affect cerebral function. They also asked subjects to respond to a questionnaire to gauge levels of inattention. The scientists ran the same tests in 25 healthy control subjects with the same exclusion criteria. To measure dopamine transporter levels, eac...

Cougar predation key to ecosystem health

...a major predator, has been shown in a new study to affect a broad range of terrestrial and aquatic species, ...mportant predator, such as wolves or cougar, could affect such a broad range of other plant and animal species. But the evidence is now accumulating that prim...

Biotech cotton provides same yield with fewer pesticides

... cotton, also known as transgenic cotton, does not affect the biodiversity of insects in cotton fields. Ca...owth in the non-cultivated areas. Plant growth can affect the biodiversity of insects found in an area. The researchers found that, per pesticide applicatio...

Crohn's disease gene identified

...l pain, diarrhea and gastrointestinal bleeding and affect over one million Americans. Because IBD tends to run in families and is more frequent in certain ethnic populations, especially Ashkenazi Jews, scientists have long suspected a significant genetic component. According to senior author Judy H. Cho,...

Tests for 'face-blindness' reveal disorder may not be so rare

...pagnosia, once thought to be exceedingly rare, may affect up to 2 percent of the population -- suggesting that millions of people may be face-blind. "Until a few years ago, only 100 cases of prosopagnosia had been documented worldwide, but it now appears the condition is much less rare than had previously ...

New mechanism explains glucose effect on wakefulness

...ls are porelike proteins in the cell membrane that affect cellular responses by controlling the flow of pota...heir finding that subtle changes in glucose levels affect firing of orexin "raises the possibility that, besides being important for adaptive responses to sta...

Bacterial 'switch gene' regulates how oceans emit sulfur into atmosphere

...o one that rises into the atmosphere, where it can affect the earth's temperature, or remain in the sea, where it can be used as a nutrient. "This new gene offers a powerful tool to study the question of how these plankton are involved with sulfur exchange between the ocean and atmosphere," said Mary Ann M...

Researchers find that bumblebees' flower choice matters

...trife, an invasive weed that chokes wetlands, will affect the seed production of monkey flower. She has set out the garden in a grid of numbered holes. In this way, she can rotate the kinds of potted plants that are dropped in each morning and the density of each species in the plot. On any given day, Fl...

Scientist works to improve treatment for brain tumors

...it and how the biological properties of tumors may affect it. His goals in the current project are to improve the drug's design so it has better contact with the receptor and to determine the most effective toxin for killing glioblastoma cells, while leaving normal cells unharmed. "Our aim is to identify t...

Adults who go to bed lonely get stress hormone boost next morning

...ogical, social and cultural dynamics intersect and affect health throughout the life span. Cortisol is often characterized as a negative hormone because of evidence, mostly in animal models, that long-term elevations could be potentially harmful to physical health. But in the short term the stress hormon...

Ghost protein leaves fresh tracks in the cell

... function of the protein," he said, "but it didn't affect the ability of the protein to reach its destinatio... more and more questions about how these mutations affect specific functions of the molecule," he said. ...

'Cellular antennae' on algae give clues to how human cells receive signals

... it possible to test, for instance, drugs that can affect cilia, in the hope of finding substances that would also be effective in higher animals, Dr. Snell said. "This is another example of how basic science research can have big results," he said. "Studies on Chlamydomonas will help us understand the un...

Coffee makes us more likely to say 'yes'

...such as, coffee, tea, cola or energy drinks) might affect how persuaded a person is when, for example, listening to advertisements or a political speech on the radio/TV, reading a film review or in a business meeting to discuss work-related issues." ...

Serotonin, acting in a specific brain region, promotes sleep in fruit flies

...ound that the neurotransmitter serotonin, known to affect many behaviors, also appears to promote lasting, quality sleep in an animal model for understanding how sleep is regulated. While central to the lives of most animals, the proper regulation sleep remains a largely enigmatic process. The findings ar...

Beaver dams create healthy downstream ecosystems

...current hydrologic balance in the river valley and affect the area's water cycle and soil conditions, potent...iver, similar hydrologic effects downstream likely affect river systems worldwide. ...

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