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Tag: "revealed" at biology news

Global 'sunscreen' has likely thinned, report NASA scientists

...imulations using one of the Goddard climate models revealed that aerosols blocking sunlight or trapping some of the sun's heat high in the atmosphere were the major driver in 20th-century global dimming. "Much of the dimming trend over the Northern Hemisphere stems from these direct aerosol effects," Romanou ...

Scientists map key landmarks in human genome

... signal processing called "wavelet denoising" that revealed the striking patterns of positioned nucleosomes. ...nd nucleosome-free regions, respectively. Analysis revealed that promoters of genes that had similar expression status (they were all "off" or "on") had related...

Scientists discover a new risk factor for Alzheimer's

...oid precursor protein (APP). Previous research had revealed that APP is subjected to a sequence of cellular events that either properly recycles APP or shunts it into cellular structures called endosomes, where it is chopped into amyloid-beta. Researchers had identified several genes involved in this cellular...

Swell gel could bring relief to back pain sufferers

...ected into a damaged area. Investigations have revealed that degenerated animal intervertebral discs containing the injected 'microgels' regain their mechanical properties. This development opens up the possibility of human patients being able to regain full mobility and flexibility after receiving spi...

Napoleon's mysterious death unmasked, UT Southwestern researcher says

...ily members. Autopsy and physician descriptions revealed no telltale signs of arsenic poisoning, such as hemorrhaging in the lining inside the heart, and no skin, lung or bladder cancers were present. Gastric cancer was more likely at fault, Dr. Genta said. Other scholars have recently found that the pl...

Discovery of an HIV inhibitor in human blood points to new drug class

...out toxic effects on cells. Further examination revealed VIRIP as the active ingredient. A synthetic version of the peptide maintained its anti-HIV activity, excluding the possibility that some other factor was responsible. VIRIP specifically targets a conserved region in the HIV-1 transmembrane glycopr...

Study uncovers a lethal secret of 1918 influenza virus

... led the previous mouse-based study. "Our analysis revealed potential mechanisms of virulence, which we hope will help us develop novel antiviral strategies to both outwit the virus and moderate the host immune response." The same excessive immune reaction is characteristic of the deadly complications of H...

The origin of the brain lies in a worm

...s nerve cells with what is known about vertebrates revealed surprising similarities. "Our findings were overwhelming," says Alexandru Denes, who carried out the research in Arendt's lab. "The molecular anatomy of the developing CNS turned out to be virtually the same in vertebrates and Platynereis. Correspo...

Studies yield insight into the numerical brain

...notation (e.g., 8 but not eight). Their analysis revealed an effect of notation in the right parietal lobe, showing that this region appears to harbor neurons that process nonabstract numerical representations, in addition to neurons that code for abstract representations of numeric quantities. The resear...

Uganda's mountain gorillas increase in number

...t census of the Virunga gorilla population in 2003 revealed 380 gorillas, up from 324 individuals counted in the previous census in 1989. In spite of incursions by farmers and rebels into the parks, and a few recent poaching events, Virungas?mountain gorillas are persisting as well, thanks to sustained conser...

Will the plague pathogen become resistant to antibiotics?

...key from several US states. "What we've done is revealed a mechanism for the acquisition of multidrug resistance in Y. pestis. Obviously, this is an event that might have serious human health consequences. But the sequencing work we've done has given us a way to monitor this plasmid in future," says senior...

Neural bottleneck found that thwarts multi-tasking

... information-processing bottleneck. The results revealed that the central bottleneck was caused by the inability of the lateral frontal and prefrontal cortex, and also the superior frontal cortex, to process the two tasks at once. Both areas have been shown in previous experiments to play a critical role i...

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

...t and visual context. “Our statistical analysis revealed that subjects who received succimer therapy showed a significant improvement in balance and movement compared to the non-therapy group,?says Bhattacharya. “This new data—combined with our previous research—leads us to believe that succimer therapy ma...

Anti-herpes treatment reduces HIV levels in women infected with both viruses

...s virus increased the replication of HIV, and also revealed that the quantity of HIV in the blood and in the vagina was reduced by continuous anti-herpes treatment over 3 months. These findings open new avenues for the prevention of HIV transmission and for the management of patients co-infected by the two...

Honeydew honeys are better antioxidants than nectar honeys

...of 36 Spanish honeys from different floral origins revealed that honeys generated by bees feeding on honeydew have greater antioxidant properties than those produced by bees feeding on nectar. The study is published in this month’s edition of the Journal of the Science of Food and Agriculture. Naturally occu...

'Juiced-up' battery fueled by sugar could power small portable electronics

...herefore a neutral word. Quicker The test revealed that the study subjects remembered distracting words less well than intended and neutral words. Moreover, people who were better at excluding these words from their brains performed the task quicker. Suppressing distraction is therefore useful. ...

Molecular tools make the cut

...herefore a neutral word. Quicker The test revealed that the study subjects remembered distracting words less well than intended and neutral words. Moreover, people who were better at excluding these words from their brains performed the task quicker. Suppressing distraction is therefore useful. ...

Brain fends off distractions

...herefore a neutral word. Quicker The test revealed that the study subjects remembered distracting words less well than intended and neutral words. Moreover, people who were better at excluding these words from their brains performed the task quicker. Suppressing distraction is therefore useful. ...

Multiple malaria infection inhibits spread of parasite

...igh 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 test, the researchers s...

Blocking immune cell action increases Alzheimer's-associated protein deposits

...either promote or break down amyloid-beta deposits revealed that a lack of CCR2 appears to reduce clearance of the toxic protein from the brain. Other tests suggest that CCR2 is required for microglia to migrate to sites of amyloid deposition but that its absence does not interfere with the cells' activity o...

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