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Tag: "previous" at biology news

Pregnancy hormone key to repairing nerve cell damage

...itute and senior author of the study. "However, no previous study has tested whether pregnancy actually results in the production of new myelin, which may lead to improvement of symptoms." The paper's findings represent the first example of a natural, biological mechanism that produces new myelin in the adult...

Experience affects new neuron survival in adult brain; study sheds light on learning, memory

...ing and memory by storing the information of one’s previous experiences," Gage says. Future research, he says, should focus on understanding when new neurons are active during memory-related behavior, how experience affects this activity, and what the consequences are for other brain regions....

Lead-'scrubbing' drug may also improve muscle function in lead-exposed children

...ays Bhattacharya. “This new data—combined with our previous research—leads us to believe that succimer therapy may also result in reduced injuries among this at-risk population.? In the October 2006 issue of the Journal of Adolescent Health, Bhattacharya’s team reported that teenagers who experienced high b...

Chimpanzees found to use tools to hunt mammalian prey

...y ignored by males, an observation that supports a previous hypothesis that female hominids played a role in the evolution of the earliest tool technology and suggests that this technology may have included tools for hunting. ...

Motor protein plays key role in connecting neurons

...ds to be so it can interact with netrin-1." Her previous studies, published in 2004 in Nature Neuroscience, showed that DCC binding to netrin-1, activates an enzyme, focal adhesion kinase, enabling developing cells to reorganize and intuitively know how to move. The process enables brain cells to reach out...

Viral protein is an effective preventative against infection

...ody’s normal flora untouched. "We knew from our previous experiments that if you treat an animal infected or colonized with pneumococci or streptococci with these lysins, you could cure or decolonize them," says Fischetti. "But I was looking for a way to see if lysins would work for secondary infections to...

Birds found to plan for the future

...od. The birds are shown to have learned from their previous experiences of food scarcity, storing food for future use in places where they anticipate future slim pickings. The researchers at the University of Cambridge believe this is the first known example of future planning in animals. On alternate mornin...

Hay fever can send work productivity down the drain

...t, either from a family doctor or an allergist. In previous work, she found that some people with allergy-like...an antibody that triggers allergic reactions. In a previous study, Szeinbach found that the ImmunoCAP IgE blood test was more accurate in diagnosing allergies w...

Multiple malaria infection inhibits spread of parasite

... about five times as high as in the capital. There previous research had revealed 177 infectious bites. Test The existing laboratory test for malaria immunity did not yet work optimally. Therefore the researchers first modified this method before starting the research on immunity. With the improved t...

Reminding doctors which antibiotics to prescribe cuts C. difficile infection rates

...gn means the study provides stronger evidence than previous investigations of similar interventions. "Nearly all previous studies assessing interventions to improve prescribing were poor quality unplanned studies with no c...

Plastic that degrades in seawater could be boon for cruise industry and others

...erican Journal of Obstetrics & Gynecology. In previous studies of drugs to suppress labor contractions to allow the fetus more time to develop in utero, some drugs were able to delay delivery, but none improved the baby’s health outcome. This study is the first to show that the baby benefited from the th...

Improving outcomes in premature births

...erican Journal of Obstetrics & Gynecology. In previous studies of drugs to suppress labor contractions to allow the fetus more time to develop in utero, some drugs were able to delay delivery, but none improved the baby’s health outcome. This study is the first to show that the baby benefited from the th...

Satellites shed light on global warming

... the ice shelf retreated many kilometres above the previous grounding line. Altogether about 250 square kilometres of grounded ice have been lost at the outlet glaciers of former Larsen-A and Larsen-B ice shelves. The remoteness, darkness and cloudiness of Earth’s Polar Regions make them difficult to stud...

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

..."We were confident in the safety profile given our previous experience using the intravenous form of these stem cells to treat other diseases in later stage clinical trials. However, we did not expect to see the across-the-board clinical improvement observed in patients at this early stage of testing." ...

Minuscule molecules pack a powerful punch

...r microRNA knockouts would have an effect in mice: previous knockout studies in nematode worms suggested that most microRNAs were not essential. Our findings were dramatically different." The effects of the miR-155 knockout swept across the immune system. The team showed that, although knockout of miR-155 ...

Cryoablation -- A new treatment option for some kidney tumor patients

...ryoablation freezes it. Mayo Clinic doctors had previous experience with liver tumor cryoablation when they added kidney tumor cryoablation in 2003. Today’s report contains the largest published results for percutaneous cryoablation patients. Mayo researchers report that not only can this technique be an...

Scientists reveal structure of gateways to gene control

...," Pugh said. This result powerfully simplifies previous theories about the possible architecture of gene packaging. "There is a certain DNA sequence that shapes the gene's architecture in the same way, producing the same structure in every gene," Pugh said. The overall sequence of DNA building blocks is...

MIT's ocean model precisely mimics microbes' life cycles

...n the new model. Chisholm believes that because previous ocean models did not convey the diversity of phytoplankton, they did not well represent the systems they modeled. The new model remedies that. "Now we are finally modeling the ocean systems in a way that is consistent with how biologists think of...

UCLA: How does your brain respond when you think about gambling or taking risks?

...avioral decision theorist, said the study confirms previous research showing that people are more turned off by losses than they are turned on by gains and it provides, for the first time, neural evidence to support this pattern. "We found for the first time that the neural response to potential losses is ...

Novel laboratory technique nudges genes into activity

...orey’s and Janowski’s current results are built on previous work, published in 2005 in Nature Chemical Biology, in which they found that RNA strands could turn off gene expression at the chromosome level. The new UT Southwestern research, coupled with that from 2005, demonstrates a shift away from convent...

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