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Tag: "reason" at biology news

Single gene is genetic switch for fly sexual behavior

...other genes, Dickson notes. "I don't see any good reason why innate behaviors, which are a consequence of how the nervous system is built, should be any different. Indeed, I think that is what our work shows," he says. In a second Cell paper, Dickson and colleagues demonstrate that nerve cells expressing ...

Genes linked to treatment resistance in children with leukemia

...r in the blood and bone marrow and the most common reason for treatment failure in childhood ALL. This risk was further increased if the child also had a TYMS 3/3 genotype. No genotype was associated with hematological relapse among patients in the lower-risk arm of the study. The researchers also looked f...

Long-sought flower-inducing molecule found

...ething of a "Holy Grail" for plant physiology. The reason is that the nature of "Florigen" is central for our understanding of how plant flowering is controlled. All attempts to identify a single substance carrying the properties of "Florigen" have failed, until now. Messenger molecule A research group le...

Computers close in on protein structure prediction

...I researcher at the University of Washington. "The reason this research is exciting is that we're showing progress in predicting the structure from the sequence. It's not that the problem is solved, but that there is hope." Proteins are biological machines, and scientists need to determine their structures...

Methamphetamine Abuse, HIV Infection Cause Changes in Brain Structure

...ative. They also assessed the ability to think and reason using a detailed battery of tests that examined speed of information processing, attention/working memory, learning and delayed recall, abstraction/executive functioning, verbal fluency, and motor functioning. They observed that methamphetamine abus...

UCSD study clarifies insulin's role in blocking release of energy in patients with type II diabetes

...e in the adipocyte,?said Hupfeld. “This may be one reason why chronic obesity and Type II diabetes are often seen together.?/p> “By correcting this hormonal imbalance, researchers may at some point improve treatment options for both obesity and Type II diabetes,?said Hupfeld. ...

A vaccine to kill tapeworm

...icial even it has to be given yearly. There is no reason why the vaccine would not work in people too. But safety issues make it much more costly to develop a human vaccine, and it should not be necessary, says Gauci. "An effective control programme would involve treating people with existing drugs to remo...

Organic farms produce same yields as conventional farms

...r yields, especially under drought conditions. The reason was that wind and water erosion degraded the soil on the conventional farm while the soil on the organic farms steadily improved in organic matter, moisture, microbial activity and other soil quality indicators. The fact that organic agriculture sys...

Leptin-signaling Protein Maintains Normal Body Weight And Energy Balance In Mice

...e fish consumption is actually falling. "The main reason for this decline is the stagnation in capture fish production combined with a fast-growing population," says WorldFish Center Deputy Director-General Patrick Dugan. The situation also threatens one of Africa's leading sources of export revenue, with...

Crisis in African fish supplies looms, experts warn Africa leaders

...e fish consumption is actually falling. "The main reason for this decline is the stagnation in capture fish production combined with a fast-growing population," says WorldFish Center Deputy Director-General Patrick Dugan. The situation also threatens one of Africa's leading sources of export revenue, with...

Gene therapy to lower blood pressure just enough

...educe the heart-weight/body-weight ratio. For this reason it has promise in reducing some of the organ damage that occurs as a result of high blood pressure. One question that remains is whether the body will accept repeated injections of the viral vector or whether its immune system eventually react again...

Mass production of human papillomavirus could lead to gains against cervical cancer

...city of this technique, and there appears to be no reason this method cannot be extended to other subtypes," he said. The researchers plan to use their production technique to study the early process of infection and to search for vulnerabilities in that process, said Ahlquist. "The early stages of infecti...

Gambling monkeys give insight into neural machinery of risk

...ing the course of the day. "There was no rational reason why monkeys might prefer one of these options over the other because, according to the theory of expected value, they're identical," said Platt. The researchers also tested whether the monkeys were simply responding to the novelty of the risky target...

Nanoparticles carry cancer-killing drugs into tumor cells

...nce Fund FWF, also discovered the possible genetic reason why the receptor molecule, which is an important factor in regulating cell growth, is missing. In healthy tissue, cells grow and divide - this is also true of cancerous tumors. The difference between the two lies in the regulation, which functions w...

Bacteria are key to 'green' plastics, drugs

...ent of biochemistry and cell biology at Rice. "One reason for this is succinate's broad utility -- it can be used to make everything from non-corrosive airport deicers and non-toxic solvents to plastics, drugs and food additives. Succinate's also a priority because some bacteria make it naturally, so we hav...

Missing Receptor Molecule Causes Tumor Growth

...nce Fund FWF, also discovered the possible genetic reason why the receptor molecule, which is an important factor in regulating cell growth, is missing. In healthy tissue, cells grow and divide - this is also true of cancerous tumors. The difference between the two lies in the regulation, which functions w...

Doctors should stop prescribing antibiotics for the common cold, review advises

...nded," the review says. Colds are the most common reason for new patient visits at general practioners' off...ork for that purpose, it is the second most common reason doctors prescribe them, Arroll writes. "Physicians prescribe antibiotics in these cases out of habi...

Study: Harmless virus kills some cancers

... Penn State, University Park campus. Although the reason why remains unclear, population-based studies have shown that people who carry AAV2 tend not to develop human papillomavirus- (HPV-) associated cervical cancer. In general, AAV2 requires association with a helper virus in order to replicate. When it ...

Blink, and the brain misses it

...ondon led by Dr. Geraint Rees may now have found a reason for why blinks go unnoticed. In their study, the researchers devised a clever way to monitor the brain's activity under conditions in which the amount of light received by the eye was constant, regardless of blinking. The researchers achieved this b...

Achilles heel of the herpes virus possibly found

...xpress the gene for the B5 receptor, this may be a reason HSV can get into most kinds of cells. "This may be one central part of the Achilles' heel in interactions of herpes virus with a cell to start infection. We can use the receptor molecule to try to understand the process and perhaps combat infection ...

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