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Tag: "under" at biology news

Pregnancy hormone key to repairing nerve cell damage

...and improve the quality of life for those who live under its influence." ...

Chimpanzees found to use tools to hunt mammalian prey

...ave discovered evidence that chimpanzees, at least under some conditions, are capable of habitually fashioning and using tools to hunt mammalian prey. The work, reported by Jill Pruetz of Iowa State University and Paco Bertolani of the University of Cambridge, will appear online in the journal Current Biol...

Scientists unravel clue in cortisol production

When a person's under stress or injured, the adrenal gland releases cortisol to help restore the body's functions to normal. But the hormone's effects are many and varied, lowering the activity of the immune system, helping create memories with short-term exposure, while ...

Cracking open the black box of autoimmune disease

...se they knew almost nothing about the actual genes under Foxp3's purview. Researchers in Richard Young's Whitehead lab, working closely with immunologist Harald von Boehmer of the Dana-Farber Cancer Institute, used a DNA microarray technology developed by Young to scan the entire genome of T cells and ...

New hereditary breast cancer gene discovered

...reases the risk of breast cancer. Studies are also under way to find out what proportion of cases of hereditary breast cancer are caused by mutations in the TWIST1 gene. ...

Adding radiation decreases breast cancer recurrence

...Boston University Medical Center. It was conducted under the auspices of the National Cancer Institute-funded Cancer Research Network. They found that women, regardless of age or comorbidities, who underwent breast conserving surgery but no radiotherapy, were more likely to have recurrence of disease or...

Organic is healthier: Kiwis prove that green is good

...ain more health-promoting factors than those grown under conventional conditions. The research is reported ...e company is listed on the New York Stock Exchange under the symbols JWa and JWb. Wiley's recently re-launched Internet site can be accessed at http://www....

CSHL research ties harmless viruses to cancer

...e cells. Fusion abruptly unites two or three cells under the same membrane, a change that triggers massive CIN and creates diverse cells whose properties change over time. The researchers found that some of these cells can become cancerous. The model that the researchers propose suggests that the best ...

Hay fever can send work productivity down the drain

...ys of work a week during allergy season. People under the care of a family physician reported a greater severity of symptoms than did patients treated by an allergist as well as those who self-managed their allergy symptoms. “Family physicians tend to be the gatekeepers to allergists, and as such are...

Multiple malaria infection inhibits spread of parasite

...this during his research into malaria transmission under the inhabitants of Cameroon, Senegal and Indonesia. After just a few infections, people can develop immunity that inhibits transmission. Malaria is not caused by a mosquito but by a parasite in the mosquito. The malaria parasite needs the mosquito ...

Fish growth changes enhanced by climate change

...er cent faster than at the beginning of the period under assessment in the mid-1950s. By comparison, juvenile oreos, a species found at depths of around 1,000 metres, were growing 27.9 per cent slower than in the 1860s. There was no or little change in the growth rates of species found between 500 and 1,0...

Reactivated gene shrinks tumors

...into tumor cells. One class of potential drugs now under investigation, known as nutlins, acts by interfering with MDM2, an enzyme that keeps p53 levels low. In follow-up studies, the MIT researchers are looking at other types of cancer, such as epithelial (skin) cancer, in their mouse model, and they p...

Plants do not emit methane

...th heavy carbon. 13C-Methane emission was measured under controlled, but natural conditions with a photo-acoustic laser technique. This technique is so sensitive that the scientists are able to measure the carbon dioxide in the breath of small insects like ants. Even with this state-of-the-art technique, t...

Williams College biologist explores photosynthetic apparatus

...n the capacity for photosynthesis of cyanobacteria under certain environmental conditions. She will also examine the molecular responses and mechanisms triggered by changes in environmental factors, such as light and temperature. It is critical in the context of potential global climate changes to understa...

Nanoparticles can track cells deep within living organisms

...t advantages over other cell-labeling technologies under development. "We can tune an MRI scanner to th...ggressively growing. Adult stem cells are also under investigation in therapies that enhance new blood vessel growth to improve the blood supply to diabe...

How T lymphocytes attack

...in this field. Two clinical studies are currently under way at the Institute: one in patients with choroidal melanoma and the other in women with cervical cancer. ...

Satellites shed light on global warming

...form. The sensor times its pulses' journey down to under a nanosecond to calculate the distance to the planet below to a maximum accuracy of two centimetres. ESA has had radar altimeters in orbit since July 1991, when ERS-1 was launched, which was followed by ERS-2 in 1995 and Envisat in 2002 and will cont...

Genomics throws species definition in question for microbes

... for classifying non-cultured microbes are limited under the current paradigm, and microbial species do not always demonstrate the phenotypic or genetic cohesiveness expected of them. For these reasons and others it has become clear that the species classification framework in use today is not capable of ...

Fruit fly gene research may shed light on human disease processes

...ng with proteins that help to activate these genes under certain conditions. Even though it is the presence or absence of the human Y chromosome that directs sex development, human females still need to determine how many X chromosomes they have in each cell. They do this to ensure that similar amount...

Stem cell therapy shows promise in regenerating damaged muscle in heart attack patients

...The cells have the ability to expand, or multiply, under controlled conditions, and the expanded cells have the ability to develop into different types of cells in the appropriate environment. One donation can produce billions of MSCs. The cells can be stored for years in a frozen state, ready to be used w...

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