Diagnostics
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May 22 | News
Biomedical engineers at University of California, Davis have
developed a microfluidic chip to test for latent tuberculosis. They hope
the
test will be cheaper, faster, and more reliable than current testing for
the
disease.
May 21 | News
University
of Iowa neuroscientist John Wemmie is interested in the effect of acid
in the brain. His studies using new magnetic resonance imaging
techniques suggest that increased acidity or low pH, in the brain is
linked to panic disorders, anxiety, and depression. But his work also
suggests that changes in acidity are important for normal brain activity
too.
May 15 | News
Researchers have created an ultrasensitive biosensor that could open up new opportunities for early detection of cancer and "personalized medicine" tailored to the specific biochemistry of individual patients. The device, which could be several hundred times more sensitive than other biosensors, combines the attributes of two distinctly different types of sensors.
May 15 | News
Scientists
at Weill Cornell Medical College have discovered that the single
protein, alpha 2 delta, exerts a spigot-like function that controls the
volume of neurotransmitters and other chemicals that flow between the
synapses of brain neurons. The surprising finding tells us not only how
brain cells communicate, but also how a certain pain drug works.
May 9 | News
As medical researchers and engineers try to shrink diagnostics to fit in a person's pocket, one question is how to easily move and mix small samples of liquid. University of Washington researchers have built and patented a surface that, when shaken, moves drops along certain paths to conduct medical or environmental tests.
May 8 | News
His
DNA had been decoded; samples from his stomach and intestines have
allowed us to reconstruct his very last meal. The circumstances of his
violent death appear to have been explained. However, what had, until
now, eluded scientists was identifying any traces of blood in Ötzi, the
5,000 year old glacier mummy.
May 7 | News
As
valuable as X-ray mammography is, it has certain drawbacks, such as
exposure to ionizing radiation and the potential for false results. In
the first phase of clinical testing is a new imaging device built around
the principle of photoacoustics, or light-induced sound, that can
detect and visualize breast tumors with a high degree of targetting
accuracy.
May 7 | News
One
exhale and a new device from researchers at Stony Brook University in
New York could screen for anything from diabetes to lung cancer. Based
on a sensor chip built from electrospun nanowires that can detect minute
amounts of chemical compounds, the device has yet to reach clinical
trials. But its inventors anticipate the device to someday cost only
$20.
May 3 | News
When
the DNA double helix breaks, the broken end goes searching for the
similar sequence and uses that as a template for repair. Using a new
dual-molecule technique, a research group in the Netherlands has
found out how the DNA molecule is able to perform this search and
recognition process in such an efficient way.
May 3 | News
A
new Agriculture Department program will begin tracing the source of
potentially contaminated ground beef as soon as there is an initial
positive test. Current procedures require USDA officials to wait until
additional testing confirms E. coli before starting
their investigation. Under the new process, the source could be traced
24 to 48 hours sooner.
