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Tag: "human" at biology news

Massive herds of animals found to still exist in Southern Sudan

... (112,650 km) to create an unprecedented record of human impact on the land. A survey of Southern Sudan was...ts making observations of all wildlife, livestock, human activities and habitat. Observers on each side of the aircraft counted animals that they observed be...

Nurtured chimps rake it in

...first to demonstrate that raising chimpanzees in a human cultural environment enhances their cognitive abil... issues of attachment, and preschool education for human infants and children,” The authors conclude that the differences in performance between the three...

New findings challenge established views on human genome

...at promise to reshape our understanding of how the human genome functions. The findings challenge the tradi...ologically functional elements in 1 percent of the human genome. Carried out by 35 groups from 80 organizations around the world, the research served as a pi...

Penn researchers link cell's protein recycling systems

...nt. Taylor’s group then moved on to fly models of human neurodegenerative disease and showed that they, too, are rescued by over-expression of HDAC6. Therefore, the researchers suggest that the level of the HDAC6 in a cell regulates its sensitivity to accumulation of misfolded proteins, and that increa...

Bacteria ferry nanoparticles into cells for early diagnosis, treatment

...gy. Experiments were carried out in cultures of human cancer cells, including intestinal, oral, liver, ovarian and breast cancer cells. The researchers also tested their method on live mice and showed how the technique could be used to deliver specific genes to various organs, including the liver and ki...

Herpes virus hijacks DNA repair process

...ponse. They also showed that Epstein-Barr virus, a human herpes virus, has a similar protein. Scientists fo...transmit signals. Genetic comparisons with several human herpes viruses revealed kinases similar to orf36 in the human viruses. Scientists then took a simila...

University of Pittsburgh School of Medicine researchers develop 'off-the-shelf' vascular grafts

...ded tissue-engineered vascular grafts for eventual human application. “The next step is to demonstrate the use of the tissue-engineered blood vessel in a larger animal model, such as a pig, which has a coagulation system more similar to that in humans. The advantage of our approach is that the graft could ...

Staphylococcus aureus hides out in cells

A major cause of human and animal infections, Staphylococcus aureus bacte...nomics shows how S. aureus makes itself at home in human lung cells for up to two weeks. A team of 12 researchers from University Hospital of Geneva, Switze...

Potent possibilities for parasite attack

... on the report. "Given their lack of similarity to human genes, they present a limited repertoire of potent...aziliensis and L. infantum, but is absent from the human genome. The parasite genes are thought to have been acquired from bacterial species that have very s...

Mutating the entire genome

...ow non-gene portions of DNA control genes to cause human defects and diseases. Credit: Sen Wu, University o... Genes account for only 2.5 percent of DNA in the human genetic blueprint, yet diseases can result not only from mutant genes, but from mutations of other D...

Fat fish put obesity on the hook

...responding author Roger Cone, “Being able to model human disorders like obesity in zebrafish allows scienti...enetics in this case – can be brought to bear on human problems.” According the U.S. Centers for Disease Control and Prevention, the prevalence of overw...

Human genetic 'deserts' are teeming with significant life

Nice, France: Many of the areas of the human genome previously thought to be deserts are in fac...uman Genetics today (Tuesday 19 June). Most known human genes in the genome map are still incompletely annotated, says Professor Alexandre Reymond, from the...

CU study reveals why starling females cheat

...y. Usually, if a female bird (and at times if a human female) is caught cheating, the partner punishes her by doing less work in raising the chicks, or in extreme cases, leaves her to raise the chicks on her own. But because superb starlings, a bird common to East Africa, are cooperative breeders, femal...

Surprising origin of cell's internal highways

...agged the growing ("plus") ends of microtubules in human retinal epithelial cells with a fluorescent molecule, videotaped their growth and carefully followed the tracks back to their origin. "We show that not only the centrosome, but the Golgi also makes microtubules," Kaverina said. "And unlike centro...

The mouflons of the Kerguelen archipelago

... animal and plant populations has been modified by human activity. In many cases, we are witnessing a loss of biodiversity. While scientists ask themselves about our impact on the genetic diversity of populations, this study by Denis Réale and his co-workers sheds new light on mechanisms that can regulate ...

Researchers develop buckyballs to fight allergy

... buckyballs are able to block allergic response in human cell culture experiments. Buckyballs, or fullerenes, are nanoparticles containing 60 carbon atoms. Due to their unique structure, inertness and stability, researchers from a number of scientific fields have been investigating the tiny, hollow car...

Male circumcision overstated as prevention tool against AIDS

...ople are dying and there is too much disregard for human life among infected prostitutes to leave treatment...hem to be discriminatory, violate the individual’s human rights and are perceived as an attack on female prostitutes who are viewed as victims of gender and ...

Gene therapy study shows safety and statistically significant improvement in Parkinson's disease

...ranslate a variety of new gene therapy agents into human clinical trials for many devastating brain disorde...of this strategy has been demonstrated in previous human studies where reducing STN activity by either electrical stimulation or lesioning can help ameliorat...

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

...some types of mosquitoes can transmit a particular human pathogen while others cannot. If those that cannot have evolved an effective immune system that fights off the pathogen, we may be able to use this knowledge to enhance specific reactions of the immune systems in other mosquitoes to control the sprea...

Ancient retrovirus sheds light on modern pandemic

...ave made us more vulnerable to HIV." Evidence of human immunity to this ancient retrovirus first emerged ...e largest difference overall between the chimp and human genomes was the presence or absence of PtERV1," Emerman said. "Chimps have 130 copies of PtERV1 and ...

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