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Tag: "end" at biology news

The first baby boom

...r the introduction of agriculture in Europe at the end of the Stone Age, Jean-Pierre Bocquet-Appel (Ecole des Hautes Etudes en Sciences Sociales, France) writes, "The signal of a demographic change we detected ?is characterized by an abrupt 20 to 30 percent increase, over 500 to 700 years, in the proport...

Genes affecting blood pressure change as children become adults

...heart pumps with each beat ?near the beginning and end of the biologically tumultuous times. Researchers left much-discussed obesity out of this equation, focusing instead on genes and environmental factors directly influencing blood pressure and hemodynamics. The huge twin cohort and some complex mathe...

DNA end caps may lead to cancer treatments, UT Southwestern researchers report

... is normally double-stranded.) The overhang at one end of the chromosome is longer than at the other. "Understanding the structure of the overhang is clearly very important for our ultimate ability to understand and manipulate these things for a variety of purposes," Dr. Wright said. The researchers ...

Stable polymer nanotubes may have a biotech future

...bi-layer membranes consisting of polymers with one end that likes water and one end that does not. (These fluid-filled containers are a spin-off of liposomes, artificial cells with fat...

Evolution mystery: Spider venom and bacteria share same toxin

...and Binford found a common structural motif at the end of both toxic proteins that is not found in any ot...ural detail--which resembles a plug or cork at the end of a barrel-shaped enzyme--is evidence that the spider and bacterium share a relatively recent commo...

Illegal trade is propelling rare turtle toward extinction, new report

...are then sold illegally and, according to dealers, end up in Japan, Western Europe or the United States. The report includes recommendations, including better protection within Indonesia, capacity building to increase and improve enforcement against poachers and educating enforcement officials and exo...

A large step forward in the fight against African sleeping sickness

...se produces severe sleep disorders that ultimately end in coma, followed by death. At present, fewer than 10% of the patients are treated in time. But on the other hand, the current treatment is also very toxic, and in many cases also results in the patient's death. African sleeping sickness is a disor...

Report lists top 20 most-vulnerable African carnivores

...rther analysis. Telomerase has to grab on to the end of a chromosome in order to extend it, and Cech sa...e protein that is what is really holding on to the end of the chromosome," Cech said. The very tip of the chromosome must remain free to allow access to th...

Efficiency, not more doctors, is the prescription for aging population

...rces are used in providing medical services at the end of life, should be the standard for the country as a whole. "Instead of financing further growth in our medical education system, resources might be better directed to reorganizing delivery systems that have already demonstrated that they can deliver...

Groovy protein essential for promoting cancer development

...rther analysis. Telomerase has to grab on to the end of a chromosome in order to extend it, and Cech sa...e protein that is what is really holding on to the end of the chromosome," Cech said. The very tip of the chromosome must remain free to allow access to th...

BioMed Central launches Biology Direct

...to have an important impact in their own right?The end result of this refereeing process is, I hope, a much better manuscript." ...

World Trade Center identifications pushed forensic DNA technology

At the end of more than three years, New York City's Office of Chief Medical Examiner (OCME) identified 58 percent of the 9/11 World Trade Center attack victims, thanks to innovative genetic analysis techniques, intergovernmental and family cooperation and the ...

Leave it to salmon to leave no stone unturned

...can industriously churn up entire stream beds from end to end, sometimes more than once, using just their tails. For decades ecologists have believed that salmon nest-digging triggered only local effects. But a University of Washington researcher writes in this month's BioScience journal that the silt, ...

Losing sleep undoes the rejuvenating effects new learning has on the brain

...lained. Fewer brain cells for the weary At the end of each training session, half the animals in each group were kept awake for six hours by being presented novel stimuli that kept them interested and awake. The other half were returned to their cages and allowed to sleep. After six hours, the sleep-...

The giant protein titin helps build muscles

...lethonin acted as a sort of 'cap' or 'bolt' at the end of the titin molecule," Gautel says. "What we couldn't see is how it connected two separate copies of titin together. That's what this study has shown." Wilmanns adds: "We discovered that telethonin has a kind of internal symmetry that lets it grasp...

FSU biologist says new dinosaur is oldest cousin of Tyrannosaurus rex

...rannosaurs such as T. rex were best known from the end of the Cretaceous period, about 65-70 million year...ponding with slower growth to full maturity by the end of its relatively long 13-year life. Its cranial crest would have reached its full size by then, thu...

Parts of the Caribbean and Central America are likely to have less summer rain

...tary Physics, and lead author of the study. By the end of this century, the models call for a decrease in...about the amount of warming that will occur by the end of this century." ...

Wound monitor 'sniffs out' infections

...th the aim of delivering a prototype device by the end of the project. ...

Basic research leads to a novel cancer therapy

...ch block Flk-1/VEGFR2 in endothelial cells. At the end of the 1990s SUGEN was taken over by Pharmacia, which itself was bought by Pfizer in 2003. Development of the project continued at Pfizer. SUTENT® (active ingredient Sunitinib) has now reached the market as a multi-targeted tyrosine kinase inhibitor,...

Stanford/Packard scientist's data-mining technique strikes genetic gold

...his data. But unless we're careful, we're going to end up with a big mess." ...

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