human 2 5

Tag: "human" at biology news

Ecology in an era of globalization

...an era of globalization, looking at the impacts of human migration, production systems, and invasive specie...ad de Guadalajara, Mexico) describe the impacts of human migration and population growth in their piece, "Migration and environment in the context of globali...

Madagascan tropical forests return thanks to better management and well-defined ownership

...The study also shows that the relationship between human population density and deforestation is much more ...he highest deforestation rates in an area with low human population density and large distance to markets, while the area with highest population density had...

'Personality-gene' makes songbirds curious

...- there are simply too many factors that influence human behaviour and these factors are hard to control experimentally. Birds are an easier target for research and indeed, they also have different personalities. An international team of researchers have now found evidence for the existence of a "curiosi...

'Insulator' helps silence genes in dormant herpes virus

...activities in the eye tissue of fruit flies and in human cells in culture. "Based on these findings, we were able to identify this element as a kind of chromatin insulator that helps HSV-1 maintain a balance in its life cycle." The study also showed that HSV-1 chromatin is organized in a manner very ...

How the brain's backup system compensates for stroke

...and harmlessly disrupt function in the left PMd in human volunteers. To measure the subjects' ability to select action, the researchers gave the subjects a complex button-pushing task. During this task, they scanned the subjects' brains with functional magnetic resonance imaging (fMRI) to detect changes in...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

...a pathogen targeting a single gene in an animal or human host have been identified so far. Photorhabdus ...llowed important advances in understanding how the human immune system works." As part of their innate immune system, insects use an enzyme called phenolo...

The sound of proteins

...cribes how researchers have found a way to present human proteins as musical notes. Rie Takahashi and Jeff...eles, USA, have so far transcribed segments of two human proteins into music. But to make their melodies more pleasing on the ear, they had first to overcome...

US control strategies may make flu epidemics worse, UCLA study shows

...easonal flu is an outright flu pandemic, such as a human strain of avian flu. And officials say it is not a... a mathematical and evolutionary biologist, is the human factor. The human factor involves two biological characteristics, "memory and how adaptable peop...

Vaccine prevents prion disease in mice

...e the vaccine could be considered for humans. "The human version of prion disease usually occurs spontaneously and only rarely because of eating contaminated meat," he said. "But if, for example, a more significant outbreak of chronic wasting disease in deer and elk occurs and if it were transmissible to h...

Master regulatory gene of epithelial stem cells identified

...east and prostate, which are among the most common human malignancies. The role of p63 in epithelial stem cells has been controversial. Some studies found that p63 maintains a steady pool of the regenerative cells, while other studies argued that p63 has more to do with causing the cells to differentiate ...

Nitric oxide: Key to cardiovascular and pulmonary function and drug effectiveness

...ntal discoveries about the role of nitric oxide in human biology, including the discovery of SNOs' ubiquitous role in human health and disease. "When nitric oxide function is impaired by disease, therapeutic agents like beta...

First clinical trial of gene therapy for childhood blindness

...se using administration of gene therapy vectors to human retinas, the team have carried out extensive pre-c...that disease. However, the results from this first human trial are likely to provide an important basis for many more gene therapy protocols in the future, a...

Corals -- More complex than you?

...e as many as 20 or 25,000 genes, compared with the human complement of 20-23,000." Why a simple creature...hich they are affected by other stresses caused by human activity are important questions. The similarity of the coral and human innate immune repertoires im...

8 plants from South Africa may hold potential for treating high blood pressure

...ficantly decreased the diastolic blood pressure in human patients 5-14 hours after the dose with no significant side effects. In addition, wild and cultivated garlic preparations were shown to decrease systolic blood pressure in rats. Conclusions In this study Tulbaghia violacea has shown properti...

Traumas like Sept. 11 make brains more reactive to fear

...ise Temple, a co-author and assistant professor of human development at Cornell. More than half the popul... M.S. '99, Ph.D. '02, a postdoctoral researcher in human development at Cornell. "Up until now, there has been very little evidence of that." Using functio...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

...ed as a tool to study actin because it commandeers human cells and induces them to form the filaments, which the bacteria use to navigate around the body. "We used one bacterium to weed out another. I'm not aware of anyone ever doing that," Southwick said. "In an individual cell, you can't figure out wh...

Students invent protective pouch to enhance cell therapy

...xpected to begin this summer. If it is successful, human trials would follow. "It’s very impressive," said Aravind Arepally, an interventional radiologist who served as the project’s other sponsor. "We’re basically creating a small bio-reactor inside the vein to produce insulin and other proteins that...

Genetic roots of bipolar disorder revealed by first genome-wide study of illness

...e first to scan virtually all of the variations in human genes to find those associated with bipolar disorder. Results were published online May 8 in Molecular Psychiatry by Amber E. Baum, PhD, lead researcher Francis J. McMahon, MD, and colleagues. "This is an example of how advances in genetics resea...

Gene mutation linked to cognition is found only in humans

The human and chimpanzee genomes vary by just 1.2 percent, y...ince these two species diverged most recently from human ancestors (about 5 and 14 million years ago respectively), this finding demonstrates that type II is...

New bacteria test could improve quality of fruit and vegetable juice

...juices and juice blends. The bacterium won't cause human sickness, but it affects flavor and results in spoilage. Currently, a number of different testing methods are utilized, some of which yield false negative results. This has complicated international trade. Japan, along with other developed count...

1 2 3 4 5 6 7 8 9 10