Tag: "signal" at medical news
Flaxseed-rich diet blocks prostate cancer growth and development in mice
...ry difficult amount for humans to eat, but it does signal
that we are on the right track and need to continue research in this area." According to Demark-Wahnefried, planned clinical trials must be completed before it can be concluded that dietary flaxseed is a useful protective against prostate cancer in ...
Mimicking brain's 'all clear' quells fear in rats
...re the cells fired -- i.e., the louder this safety signal
-- the less the rats froze. Animals that showed the most infralimbic activity behaved as if they had never been fear conditioned at all. The researchers then electrically stimulated the infralimbic area in rats that had been fear conditioned but no...
Marked crosswalks may pose risk to older pedestrians
...the street at an intersection that lacks a traffic signal
or stop sign, according to researchers at the Harb...bout the site, including the presence of a traffic signal
or stop sign. "A lot can go wrong when a pedestrian tries to cross the street where there is no sign...
Seeing into the Alzheimers brain
...as need much less. By detecting the weak radiation signal
from the sugar molecules as they travel throughout the brain, PET scanners can make a picture of brain cell activity. The resulting scans show the level of activity using a scale of colors; red and orange for high activity, and blue and purple for lo...
The Lancet Infectious Diseases (TLID)
...tion relies on the production and sensing of small signal
molecules. Since the level of signal
molecule is a reflection of the population size, bacteria can sense when a quorum of their companion...
Penn State College of Medicine awarded $6.9 million to create clearer images of body's interior
... magnetic strength; the higher the tesla, the more signal
there is to make MR images. However, development of higher magnetic field scanners has thus far been limited by distortion in the images. Interference, or static or radio frequency field distortion causes flaws or black spots - collectively called "a...
Ouch! The receptors mediating acidic pain sensation
...ceptors often lie beneath the skin and detect and signal
the presence of tissue-damaging stimuli or the existence of tissue damage. One particular nociceptor, vanilloid receptor-1 (VR1), relays sensory messages to the brain in response to thermal and painful chemical stimuli and is generally regarded as th...
Fred Hutchinson oversees two grants of nearly $8 million to develop blood test for breast cancer
...hose expected in early-stage cancer, are needed to signal
a positive screen." Such an approach to early cancer detection is unique, Urban said. "Martin is one of the few statisticians in the world to have studied longitudinal use of marker panels, taking into account a woman's biomarker history when determ...
New data may alter frequency and surgical procedure
...l breast tumors have invaded nearby lymph nodes, a signal
that additional therapy is called for to destroy r...tected in 61% of these nodes. RT-PCR amplifies the signal
from the tumor so that detection of metastatic cells is much more sensitive than with H&E, the stand...
Chili peppers and inflammation: Researchers unravel mechanism of pain sensitivity
...A receptor is a protein that transports a chemical signal
into a cell. Woolf and lead author Ru-Rong Ji, Ph...e receptor following inflammation is mediated by a signal
molecule called p38, located within sensory neurons. The chili pepper receptor, which is technicall...
Gene therapy promising for preventing restenosis
...m the blood vessel lining is damaged, it sends a signal
that increases oxidative stress, which means that the body produces more free radicals. The oxygen derivatives known as free radicals are very active chemical compounds "that can destroy almost anything," he says. One of the most common of these co...
More than 70 percent of adults with cancer use alternative therapies
... also is important, she said, because such use may signal
difficulties in coping with the cancer or its treatments and may indicate the need for referral to mental health services or a support group. Use of alternative medicine also may indicate a patient is motivated to make healthful lifestyle changes. "S...
Study finds new target for development of anti-cancer drugs
...ors on the cell''s surface. This, in turn, sends a signal
to km23 telling it to attach to the motor and pick up the cargo. This study, titled "A novel TGFbeta receptor-interacting protein that is also a light chain of the motor protein dynein," was published this week in the online version of Molecular Bi...
Drug protects fertility, offspring in mice after radiation exposure
...ng ceramide action - the oocytes never receive the signal
to begin apoptosis. Two months after treating the female mice with radiation, the researchers mated them with normal males. Surprisingly, S1P-treated mothers delivered normal litters, and the offspring appeared normal by several criteria. Further, s...
Researchers develop 'fingerprinting' for biological agents
...are two key items: molecules that provide a unique signal
(the "fingerprint") when a light is shined on them...r each biological agent. "The silver enhances the signal
by many orders of magnitude, creating a highly sensitive method for detecting DNA," Mirkin said. "Ou...
Vitamin E is important for early prevention of cardiovascular disease in middle-aged women
... plaques and lesions in the coronary arteries, may signal
the development of cardiovascular disease (CVD) early in life, perhaps decades before any explicit clinical diagnosis of CVD is made. Adequate intakes of antioxidant vitamins are known to protect against plaque formation, and yet most research into t...
Cancer revealed: New $10M grant establishes cancer imaging center
...an be spliced into cells and send out a biological signal
only when the cell is in the process of dying - a process called apoptosis. The ability to see non-invasively when cells are going through apoptosis could help greatly in determining quickly whether different drug candidates can kill cancerous cells,...
DARPA to support development of human brain-machine interfaces
...es of food. The scientists fed the mass of neural signal
data generated during many repetitions of these ta...mputer connected to the robotic arm to sense these signal
patterns emanating from the monkey's brain, the scientists could enable the monkey to, in effect, co...
Pivotal brain processor decreased in schizophrenia
Irvine, Calif. -- Levels of a pivotal signal
processor in the brain are reduced significantly in people with schizophrenia, a study by scientists at UC Irvine, Weill Cornell Medical College and Rockefeller University has found. The findings suggest that the processor, which helps regulate key n...
Study adds to knowledge of what it takes to stand up, walk
... vessel because it's that norepinephrine that will signal
vasoconstriction and maintain blood pressure when you stand up." Conducted at the National Institutes of Health-funded GCRC, Sinoway used microdialysis to measure the muscle sympathetic nerve activity - or muscle activity prompted by signals from t...
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