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Tag: "revealed" at biology news

A fisheye view of the deadliest breast cancer

...P1. Analysis of compound and mock-treated animals revealed that SU5416 leads to shrinkage of tumor cells and tumor-induced vasculature, while PP1 mainly affects tumor cell survival. In all, the researchers were delighted with their breast cancer model’s ability to work as a real-time study window into IBC...

Resistance and genetic sensitivity to sleeping sickness

... Bandundu in the Democratic Republic of Congo (1), revealed evidence of three associations between a DNA mutation and the development of the disease. Depending on their position on certain cytokines genes, the mutations investigated were shown to be capable of inducing in the subject carrying them an increase...

Slow brain waves play key role in coordinating complex activity

...Several hours of data from five different patients revealed that high-gamma activity was locked to the theta rhythm in many different areas of the brain. The stronger the theta wave, the stronger the coupling to high-gamma oscillations. The pattern of coupling between theta and high-gamma also changed with t...

Human stem cells delay start of Lou Gehrig's disease in rats

... Close examination of the transplanted cells also revealed that more than 70 percent of them developed into nerve cells, and many of those grew new endings connecting to other cells in the rat's spinal cord. "These stem cells differentiate massively into neurons," says Koliatsos, "a pleasant surprise give...

Wild tigers need cat food

... a recent issue of the journal Animal Conservation revealed that tiger numbers in a protected area along the Laos-Vietnam border are severely depressed from commercial poaching, and prey depletion which may increase competition between large carnivores. "The good news is that given the chance, tigers can r...

Altered perception of reward in human cocaine addiction

...diction," Goldstein said. The fMRI results also revealed that non-addicted subjects responded to the different monetary amounts in a graded fashion: the higher the potential reward, the greater the response in the prefrontal cortex. In cocaine-addicted subjects, however, this region did not demonstrate a g...

Scientists get best look ever at water-life connection

... by Ohio State University physicist Dongping Zhong revealed these interactions for the first time, and report ...wer from different angles," he added. The answer, revealed in Zhong's lab: water molecules do move fast on their own, but they slow down -- to a speed midway b...

Extraordinary life found around deep-sea gas seeps

... continental margin. However, this expedition also revealed the extent to which these communities may face serious threats from human activities. At all of the seep sites, there was evidence of fishing damage in the form of trawl marks, lost fishing gear, and extensive areas of deep-sea coral rubble. ...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

... brain across all the participants, the scans also revealed differences between individuals in the level of their dopamine response and their self-rated pain and emotional response. This kind of variation may help explain the major variation between individuals who are exposed to addictive drugs ?some become ...

Fish species plays surprise role in aiding coral reef recovery

...the basis of coral reef recovery, researchers have revealed the critical importance of a rare batfish, Platax pinnatus, in promoting the return to health of a disturbed coral reef overgrown with algae. The findings bring to light a previously unrecognized role for the batfish species, which had not been consi...

Bacteria that use radiated water as food

...ring rocks. High density DNA microarray analysis revealed a vast number of bacterial species present, but the samples were dominated by a single new species related to hydrothermal vent bacteria from the division Firmicutes. The ancient age of the fracture water and comparative DNA analysis of the bacterial...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

...en levels did not appear on a monitor and were not revealed to birth attendants. Of the pregnant women who participated, 2629 were randomly assigned to the open group and 2712 women were assigned at random to the masked group. Overall, the researchers found no statistically meaningful differences in Caesa...

Malaria vaccine prompts victims' immune system to eliminate parasite from mosquitoes

...copic examination of the mosquito digestive tracts revealed that the antibodies were capable of completely eliminating the ookinettes. The study authors noted that Psv25H, a molecule similar to Pfs25, is found on the surface of ookinettes of another species of Plasmodium that causes malaria, Plasmodium viva...

High levels of blindness in southern Sudan following years of war

...nd eventually blindness results. The situation revealed by the researchers is particularly tragic as improved living conditions, better hygiene, and early treatment of the infection with antibiotics can prevent trachoma. Surgery for trichiasis is also very effective. The World Health Organization recommen...

Buildup of damaged DNA in cells drives aging

...und almost none. Further analysis of the boy’s DNA revealed a mutation in a gene known as XPF, which codes for...ed by normal mice of the same age. This comparison revealed a profound suppression of genes in several important metabolic pathways in the progeroid mice. Most ...

Search on for treatment of slow-healing wounds

... samples analyzed by the CBE from Wolcott's clinic revealed that 60 percent contained biofilms, compared with a mere 6 percent in acute wounds, such as cuts. Previous center research has shown that bacteria in biofilms activate sets of genes that are dormant in free-floating bacteria. With their new geneti...

Like a snail through the intestinal canal

...to evaluate how this material worked. Her findings revealed that muco-adhesives in the form of films provided by far the highest degree of friction. Despite this, there is nevertheless no possibility of movement. A snail uses the exertions of pressure to change the characteristics of the middle layer, and ...

Dust to gust

...at an additional spot above the ocean. The data revealed that some 56 percent of the dust reaching the Amazon forest originates in the Bodélé valley. They also showed that a total of some 50 million tons of dust make their way from Africa to the Amazon region every year, a much higher figure than the previ...

USC team reveals structure of APOBEC family protein

...dition of Nature, a USC team led by Xiaojiang Chen revealed the "unusual" crystal structure of the Apo2 enzyme... Prochnow, a graduate student in Chen's lab, first revealed the atomic structure of the enzyme, the research team was surprised by the molecule's shape. "Bas...

Pure carbon nanotubes pass first in vivo test

...tubes went within 24 hours of being injected, also revealed trace amounts of nanotubes in the kidneys ?another common expulsion route for drugs. There was no evidence that nanotubes remained in other tissues in the body. Nanotubes are hollow cylinders of pure carbon that measure just one nanometer in diame...

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