Tag: "system" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

... suprachiasmatic nucleus which act as a signaling system that tunes the bodys internal clock. This signaling system helps to properly regulate daily rhythms of waking, sleeping, even hunger that is, if its formation...

Genomic Analysis Uncovers New Targets for HIV Vaccine

...ore of these genes, and help the body's own immune system overcome an infection. One of the genes looks part...patients with specific gene variants in key immune system cells appear to be much better at controlling the proliferation of the virus after infection. These ...

Identified main genetic variants involved in response to HIV

...tems, responsible for the activation of the immune system so that it is able to locate and destroys cells infected by HIV. This study has also identified a third genetic variation involved in immune damage of patients, particularly in a gene encoding a protein which seemingly participates in viral replicati...

Research identifies protein that signals flowering in squash plants

...is research lies in the nature of the experimental system utilized. The authors chose Cucurbita squash speci...hts) occur, and therefore they represent the ideal system for experimental manipulation to investigate this phenomenon. Principal investigator William J. Luca...

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

...treat Alzheimer’s disease by modulating the immune system is tremendous and is an area that has not been fully explored,” said O’Banion. “That said, people have to remember that the current findings are in mice, not people. We need to be cautious about how to interpret the results.” ...

Pregnant mom's exposure to flu vaccine kick-starts fetal immune system

...pporting the theory that the human neonatal immune system is not deficient or incompetent but, rather, capable of responding to environmental exposures. These conclusions have important implications for determining when immune responses to environmental exposures begin....

Modeling the restless brain

...st theories and generate new insights into how the system works as a whole. And while technologies such as functional MRI allow scientists to measure some kinds of neural connectivity, neuroinformatics approaches, which use extensive anatomical and physiological data sets to describe the macacque's brai...

Simulations unravel outer membrane transport mechanism

...The new study examined an outer membrane transport system that depends on an energy-generating inner membran... barrel. (Click on the link below the image of the system to watch the results of the simulation.) A second simulation exerted a force near the center of g...

How sneaky HIV escapes cells

...us that causes AIDS, uses a pre-existing transport system to leave one infected cell and infect new ones, Hopkins scientists have discovered. Their findings, published in the June issue of Plos Biology, counter the prevailing belief that HIV and other retroviruses can only leave and enter cells by virus-spe...

CSIRO scientists join fight to save 'Tassie devil'

...of diseased devils into a geographical information system (GIS) to map the spatial and temporal distribution of the disease across Tasmania. “The result of my work was a map showing the spread of DFTD over time and some spatial statistics correlating the frequency of devils and diseased individuals with ...

Dirty snow may warm Arctic as much as greenhouse gases

... said Charlie Zender, associate professor of Earth system science at UCI and co-author of the study. “Dark soot can heat up quickly. It’s like placing tiny toaster ovens into the snow pack.” The study appears this week in the Journal of Geophysical Research. Dirty snow has had a significant impact on ...

Newly found sensing system enables certain bacteria to resist human immune defenses

...ue and salmonellosis—a sensory and gene regulation system named PhoP/PhoQ protects invading bacteria, and sc...eve if they develop a better understanding of this system they could develop new drugs that are more effective at protecting people from infection. Likewis...

Research shows cord blood comparable to matched bone marrow

...s on bone marrow cells that can provoke the immune system to respond. When doing bone marrow or cord blood transplants, doctors generally try to have the donors’ and recipients’ HLA types match as closely as possible. Wagner added that increasing the inventory will increase the chance of finding donors fo...

Salty oceans provide early warning for climate change

... Currently there is no large-scale salt monitoring system in place in the southern hemisphere oceans. Zahn t...could be useful. “It could act as an early warning system for climate changes 10-20 years down the road,” he says....

Dual-imaging technique useful before -- and during -- brain surgery

...a) scanner, with a precise intraoperative guidance system will improve patients’ post-operative speech, move...his colleagues use a high-tech surgical navigation system known as BrainLAB. The BrainLAB technology incorporates functional MRI data to identify brain areas ...

Breakthrough developments in rheumatoid arthritis reported

...e genes will help tell the story of how the immune system works to create specific antibodies that in turn i...re cracking the genetic code that makes the immune system wage an attack on a person’s joints. Over the last decade, Dr. Gregersen and his colleagues have bee...

Now, self-healing materials can mimic human skin, healing again and again

...b site. “The vascular nature of this new supply system means minor damage to the same location can be healed repeatedly,” said Sottos, who also is a researcher at the university’s Beckman Institute. In the researchers’ original approach, self-healing materials consisted of a microencapsulated healing a...

Migration alert -- How tumor cells home in on the lymphatic system

...iption of how tumor cells migrate to the lymphatic system in the early stages of tumor metastasis. This new understanding holds significant potential for developing anti-metastasis therapies. Scientists know that tumor cells spread via the lymphatic system, but they don’t understand the details of how thi...

Researchers examine carbon capture and storage to combat global warming

...ve laws against drunk driving-we implement a whole system to ensure that the activity is safe.'' Policy and progress Engineers have more than three decades of experience putting carbon dioxide into oil reservoirs, where it increases oil production by making the oil expand and ''thin out'' such that ...

Newly discovered antibody may be body's natural defense against Alzheimer's

...body found in human blood suggests that the immune system recognizes these aggregates to be a particularly noxious threat. "This could be part of an innate defense mechanism against Alzheimer's and other age-related neurodegenerative disorders," comments Dr. Marc Weksler, The Irving Wright Sherwood Prof...

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