Tag: "turns" at medical news

Some brain cells 'change channels' to fine-tune the message

...ng more than just keeping the cell alive. "Calcium turns some processes on, and it turns others off," he says. "My personal belief is that the cells might be doing more than just protecting...

Giant iceberg B-15A edges past floating ice pier

...er trailing end of the iceberg, much like the wide turns made by a long trailer behind a truck or the stern of a ship." Drinkwater adds that the tidal current oscillations in the cross-shelf or approximately east-west direction may not be large enough to force a significant impact. Currently the northwa...

Protein that helps skin cancer spread identified by Stanford researchers

...e neighboring skin tissue and spread - a step that turns an otherwise benign tumor into a killer. "When we ...ls that the researchers had studied previously. It turns out that the difference in cancer formation had to do with the type of alteration in the children's ...

New substance that improves the photodetection of bladder cancer gains market approval

...sappears as the molecule takes on an iron atom. It turns out that cancer cells slightly overproduce photoactive porhyrins, and the enzyme responsible for the next step, adding the iron atom, is also inhibited. These two effects combine in cancerous cells to produce an accumulation of the fluorescent molecu...

Young blood revives aging muscles, Stanford researchers find

...t aging muscles don't heal like young ones. But it turns out that's not the muscle's fault. A study in the Feb. 17 issue of Nature shows that it's old blood that keeps the muscles down. The study, led by Thomas Rando, MD, PhD, associate professor of neurology and neurological sciences at the Stanford Unive...

Newly identified gene cluster on mouse X chromosome provides insights into fertility

...hich causes Rhox genes to be activated, which then turns on a genetic cascade that affects the neighboring germ cells, pushing them to mature and become sperm." "Another thing that some Rhox genes could be doing is regulating the production of proteins within Sertoli cells that allow the neighboring germ c...

New way to block pox shows promise in lab study

...ney cells and a mouse model of smallpox infection, turns the usual approach to fighting viral infections on its head. By developing drugs targeted to the unchanging chemical pathways used in normal cell processes and co-opted by viruses, the investigators say it might be possible to battle acute viral infe...

Dartmouth awarded $21.8 million NSF grant

...ngs to Native American communities. "Our approach turns the whole issue of how people learn on its head," says Gazzaniga. "Instead of treating the brain as a black box and asking what is the best type of learning environment, we ask what are the optimal ways in which the human brain learns, including what...

Steroids increase death risk from traumatic head injury

...of the brain and its surrounding tissues, which in turns creates pressure in the skull that may lead to complications or death. The 17 studies on steroid use and the risk of death examined by Alderson and colleagues included a total of 12,083 patients of all ages with clinically diagnosed traumatic brain i...

Researchers hope monkeys can provide new insights into depression

...ll have menstrual periods," said Shively. "If this turns out to be accurate, it could explain, in part, the observed relationship between coronary artery disease and depression." The researchers said monkeys may be particularly useful for learning more about human depression for several reasons. In women, ...

Surprise! Cells have second source of phosphate

...d phosphate, is added onto proteins. This addition turns protein activities up or down and fine tunes cells' responses to what's happening outside their borders. This communication can go awry in diseases, including cancer, and be corrected by various drugs. The source of these phosphate bits has been know...

Marine snail study gives insights into human brain

...ed over several hours induces long-term memory and turns on specific genes in neurons, causing proteins to be synthesized that have important functions in long-term memory. Glanzman's team is identifying important genes and proteins, and their functions in learning and memory. What does the marine sn...

SIDS risk linked to lack of experience with tummy-sleeping

...on dioxide levels at the nose, while complete head turns produced larger, sustained decreases in carbon dioxide. Head lifts also reduced carbon dioxide levels, but the decreases lasted only as long as the baby's head was raised. The researchers suggest that babies learn through experience which head movem...

Novel drugs help solve Gleevec resistance

...ABL. This oncogene produces a tyrosine kinase that turns on multiple signals that tell the cells to grow and divide in an uncontrolled manner leading to overt leukemia. Gleevec binds to the abnormal enzyme (Bcr-Abl) and shuts down its activity, often leading to the death of the leukemia cell. AMN107 is up ...

Holiday feasting could sabotage liposuction results

...weight loss tool," said Dr. Rohrich. "My practice turns away approximately one in five patients requesting liposuction because they are not appropriate candidates - many are 50 to 70 pounds overweight. Patients need to understand that they are responsible for the long-term results of their liposuction by...

Study finds HER2-positive breast cancer invades organs due to fatal chemical attraction

...where the cancer cells then settle and grow. "HER2 turns on, and then magnifies, the ability of these cancer cells to zero in on organs that release this chemical signal," says Hung. "That explains why HER2 breast cancers can so easily induce metastasis." The researchers specifically identified the pathway...

Beyond supervision

...patient safety. For instance, a doctor like MacRae turns away significant business after investing hours with a patient because he discovers that many patients around 20 percent are not good candidates for refractive surgery and might have troublesome side effects. MacRae and other top doctors also use e...

Study reveals link between cardiovascular risk and cognitive decline

...nd type 2 II diabetes. "What's bad for the body turns out to be bad for the brain," says Kristine Yaffe, associate professor of psychiatry, neurology, and epidemiology at UCSF and chief of geriatric psychiatry at the San Francisco VA Medical Center (SFVAMC). Dr. Yaffe led the five-year prospective study...

New magnetic percutaneous system navigates vessels

...system is useful to steer guide wires and navigate turns in tortuous coronary arteries that would otherwise be impossible to negotiate," said study co-author Neal S. Kleiman, M.D., director of cardiac catheterization laboratories at the Methodist DeBakey Heart Center and associate professor of medicine at ...

Nerve navigation findings prompt new direction for spinal cord research

...w this factor can turn on but we don't know how it turns on. If you sever the spinal cord, the important crossing of the axon is gone. Right now, we don't know how to make it go back." Drs. Xiong's MCG collaborators on the study include her husband, Dr. Lin Mei, also a developmental neurobiologi...

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