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Tag: "happens" at biology news

Brain inflammation may be friend, not foe, for Alzheimer's patients

...boost IL-1beta in select areas and then watch what happens as the process unfolds. The team expected to see the telltale clumps of material known as amyloid plaques, made up of the peptide amyloid beta, worsen. Instead, to the team’s surprise, the brains of the mice with IL-1beta stuck in overdrive had on...

Researchers shed light on shrinking of chromosomes

... molecular basis of chromosome condensation. What happens when chromosomes are not correctly separated and distributed during cell division we know very well; two daughter cells with either broken chromosomes or different numbers of chromosomes result and severe diseases including cancer can arise. But so f...

Researchers examine carbon capture and storage to combat global warming

...udying reservoir geology to better understand what happens after injecting carbon dioxide underground. ''You need to carefully select places that won't leak, and do a good job of engineering the injection systems and paying attention to where the carbon dioxide is actually going,'' Orr said. While a th...

Physicist cracks women's random but always lucky choice of X chromosome

... cell. The Warwick researcher paper says that what happens next is that material for a "protein plug" then begins to gather around both of the XIST suicide genes on each X Chromosome. This starts a race between the two build ups of protein. Inevitably one of these two nascent protein plugs narrowly wins that...

Scientists close in on missing carbon sink

...e science has been the question of what ultimately happens to the carbon emitted by motor vehicles, factories, deforestation, and other sources. Of the approximately 8 billion tons of carbon emitted each year, about 40 percent accumulates in the atmosphere and about 30 percent is absorbed by the oceans. Scie...

Protein enables discovery of quantum effect in photosynthesis

...nd colleagues used 2-D spectroscopy to study what happens inside a bacteriochlorophyll complex, and detected a 'quantum beating." The effect, described in the April 12, 2007 issue of Nature, occurs when light-induced excitations in the complex meet and interfere constructively ­ much like the interaction...

How the brain's backup system compensates for stroke

...te for disruption of a primary functional area, as happens during stroke. Their finding offers new insight into how the brains of stroke victims can quickly reorganize to enable the beginning of recovery of movement. Jacinta O'Shea and colleagues at the University of Oxford reported their findings in the Ma...

New Brandeis research sheds light on memory by erasing it

...b plans further research to better understand what happens to the CaMKII after it is attacked. By using fluorescent forms of CaMKII, it will be possible to determine whether the kinase leaves the synapse after inhibitor is applied. This provides a way to directly visualize the forgetting process and compleme...

Chemical maps hint at drug's effects on schizophrenia

...or effort to link the changes in the blood to what happens in the brain," Kaddurah-Daouk said. "If we can apply these findings to the mysteries occurring in the brain, then perhaps we can finally unlock the secrets of these devastating diseases." Kaddurah-Daouk believes that this and other studies that ex...

Genome of yellow fever/dengue fever mosquito sequenced

...ucing TEs in a more or less random way to see what happens to the laboratory mosquitoes, the TEs become a tool to study the genetic mechanism of mosquito-virus interaction, to help us understand mosquito biology and reveal new ways to interfere with disease transmission," Tu said. According to the article...

Latent memory of cells comes to life

...the absence of any kind of change to the DNA. This happens in fact in all of us as our body develops: cells with identical genetic information adopt very different fates, forming tissues that have apparently very little in common with each other, such as skin, brain, or bones. Mechanisms at the origin of thi...

Fish extinctions alter critical nutrients in water, study shows

...few studies have been able to explore exactly what happens when a species dies out. Now, a Cornell study using computer simulations has teased out how the disappearance of a freshwater fish can affect the availability of certain nutrients that other species rely on. Algae, at the base of the food chain, f...

Rare cell prevents rampant brain activity

...ids ending up in a state of chaos, something which happens only on exceptional occasions, when it can lead to epileptic fits. Scientists at Karolinska Institutet have now uncovered a new mechanism controlling how the brain keeps its neuronal activity in check. The human brain consists of around a hundred m...

Scientists see DNA get 'sunburned' for the first time

... to sunburn, and discovered that this key reaction happens with astounding speed -- in less than one picoseco...at's fast, but this new study shows that UV damage happens many times faster. On the timescale that the unwanted bonds form, even a rapidly moving DNA molecule...

Selectivity is ultimate aphrodisiac

...usetts Institute of Technology. "How this all happens is a bit of a mystery," Finkel said. "Put yourself in the position of a speed dater. You're not only able to pick up something about the degree to which that person likes you, but you're able to pick up -- in four minutes -- the degree to which that ...

Power-boosting signal in muscle declines with age

...s. The new findings might help to explain "what happens as we age," said Gerald I. Shulman, a Howard Hughes Medical Institute investigator at Yale University School of Medicine. Earlier studies have shown that, in comparison to 20-year-old adults, even lean and healthy people in their seventies show a ...

Scientists learn the origin of rogue B cells

...doesn't always work the way it was intended. "What happens is that, if the body ever produces a cell with a self-reactive antibody molecule, that cell will get arrested in development at the point where it is actually combining and creating an antibody receptor," says Rafael Casellas, Ph.D., an investigator ...

How trees manage water in arid environments

...ity of the vegetation. This is different from what happens in most coniferous forests, where the seasonal behavior of the trees is significantly influenced by temperature changes: the trees are largely dormant in winter and have a summer growing season. The mountain-top forest that she studied was in some wa...

Bacteria control how infectious they become, study finds

...ls only a small portion of gene expression. But it happens to turn on those genes that give bacteria like E. ...be infectious,?he continued. “Actually seeing what happens at the molecular level will help us figure out what else this protein regulates.? Svetlov and Arts...

Liver regeneration may be simpler than previously thought

...en observed in many animals, the details of how it happens at the cellular level are still not completely understood. So far, scientists have shown that cells that participate in tissue regeneration behave as if they were part of a growing organ in an embryo. In other words, the cells act as if the liver is ...

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