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Tag: "controlling" at biology news

Virginia Tech helping to develop higher quality, disease-resistant wheat varieties

...uences or markers have been used to identify genes controlling traits of economic importance in wheat varieties. ...egion as the trait of interest to select for genes controlling useful agronomic traits. Breeders use these molecular markers to increase the precision in selection...

Stanford study of owls finds link in brain between sight and sound

...to stimulate the area of the brain responsible for controlling the direction of gaze in barn owls, and then studied how that affected the neural responses in regions of the brain that process auditory information. When the gaze control circuit was activated, they found that the owls' auditory system responded mo...

Tiny RNA molecules fine-tune the brain's synapses

...e in fine-tuning cognitive function by selectively controlling synapse development in response to environmental stimuli. "A single neuron can form a thousand synapses," says Greenberg, also a professor of neurology and neuroscience at Harvard Medical School. "If you could selectively control what's happening at ...

Animals can change genes quickly to keep up with viral ingenuity

...tremely quickly. The new research shows that genes controlling a part of the immune system that fights viruses actually evolve much faster than almost all other genes, evidence of the host's evolutionary race to keep the viruses at bay. In their research, the scientists found evidence that some genes that parti...

Study by Einstein researchers could lead to a novel strategy for treating obesity

In their latest finding on the brain's role in controlling appetite and weight, researchers at the Albert Ein...on also monitors fatty acid levels and responds by controlling appetite. The study focused on malonyl CoA, a molecule suspected of being one of the critical nutri...

Researchers discover a new genetic cause of Alzheimer's disease

...tudied the hereditary code that is responsible for controlling the expression of the gene (= promoter). Biologica... body are strictly regulated, primarily by closely controlling the amount of each protein that is produced. The promoter of a gene has the most important control f...

The urban evolution lab

...tudied the hereditary code that is responsible for controlling the expression of the gene (= promoter). Biologica... body are strictly regulated, primarily by closely controlling the amount of each protein that is produced. The promoter of a gene has the most important control f...

Computer simulation hints at new HIV drug target

...drug regimen has, in some cases, been effective in controlling the progression of disease and prolonging survival. It has succeeded where other therapies have failed because HAART therapy makes it difficult for even a fast-mutating virus like HIV to develop resistance to all of the drugs at once. But the specte...

How sperm crack the whip

...dies, said Clapham, will aim at exploring the many controlling currents inside sperm and also tracing how calcium triggers hyperactivation once it enters the cell. Such studies will enable exploration of sperm machinery from tail to head ?analyzing processes ranging from tail motility to the mechanism by which t...

Major WHO study concludes calcium supplements can reduce complications during pregnancy

...drug regimen has, in some cases, been effective in controlling the progression of disease and prolonging survival. It has succeeded where other therapies have failed because HAART therapy makes it difficult for even a fast-mutating virus like HIV to develop resistance to all of the drugs at once. But the specte...

Research updates 65-year-old genetic discovery

...mapped in human genes. "That gene was found to be controlling whether you can taste PTC or not," says Stone, an associate professor in ASU's School of Human Evolution and Social Change in the College of Liberal Arts and Sciences. "We decided to look at this in chimpanzees and see if Fisher was right," she says...

Alzheimer's found to be mostly genetic

...r Alzheimer's was the same for men and women after controlling for age. The study is notable for its careful approach to Alzheimer's diagnosis. All individuals were screened for cognitive dysfunction. Suspected cases of dementia, of which Alzheimer's is the most common form, received complete, in-home clinical...

Scientists develop malaria forecasting tool to predict disease risk

...octors and health care providers in preventing and controlling the disease. Malaria is one of the world's deadliest diseases, killing more than one million people every year, as well as infecting a further 500 million worldwide. The mosquito-borne illness is endemic in several regions globally, but is most a...

Rewind, please: Nature paper shows that cell division is reversible

...s in motion." The findings may prove important to controlling the development and metastasis of certain cancers. It also holds promise for the prevention and treatment of birth defects and a wide variety of other conditions. "Dr. Gorbsky's results provide elegant proof that the cell cycle must be precisely con...

For the first time: Longevity modulated without disrupting life-sustaining function

...individual's life. Insulin, which is best know for controlling blood glucose levels, has additional and equally important regulatory functions in the body. In worms, however, the chain of signals is set in motion when a single receptor on the cell surface is matched to an insulin-like signal. "If you were to i...

Uncovering sex-change secrets of black sea bass

...ng optimal sex ratios and delaying sex reversal by controlling density," he notes. "We've already made strides toward making black sea bass aquaculture possible." ...

Blood flow in brain takes a twist, affecting views of Alzheimer's

...in cells known as astrocytes play a direct role in controlling blood flow in the brain, a crucial process that allows parts of the brain to burst into activity when needed. The finding is intriguing for a disease like Alzheimer's, which has long been considered a disease of brain cells known as neurons, and cert...

Hap1 protein links circulating insulin to brain circuits that regulate feeding behavior in mice

...egulation of GABA receptors in the hypothalamus in controlling eating behavior." "Scientists know that diabetes and obesity are related to abnormalities of hypothalamic function," Li said. "This is a complicated pathway, and Hap1 can help us explain it and hopefully manipulate it to treat disorders associated...

Protein receptor cools passion of 'kiss and run' nerve cells

...onditions might be developed. Alford thinks that controlling agent may turn out to be 5-HT. "When you release 5-HT onto the terminal (pre-synaptic) cell, you can switch the relative activation of different receptors on the post-synaptic cell," he said. "You don't just change the amount of neurotransmitter rel...

HIV vaccine takes different tack to boosting immune response

...sponses play an important but insufficient role in controlling HIV infection," said Chen. "Hopefully this therapeutic vaccine can boost the natural immune responses strong enough so you don't have to take these anti-HIV drugs all the time." Chen anticipates testing the HIV vaccine in humans in the next several ...

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