Tag: "tissues" at biology news
Laser light from Free-Electron Laser used for first time in human surgery
... characteristics that allow it to cut a variety of tissues
with exceptional cleanliness. Ordinary lasers gen... conducted a number of experiments on a variety of tissues
and found that wavelengthsnear 6.45 microns were optimal for cutting all soft tissues. They publishe...
MGH study identifies new inhibitor of tumor angiogenesis and growth
...atural factor that inhibits angiogenesis in normal tissues
and, whenreintroduced into tumor cells, stops tumor growth," says Michael Detmar, MD, who led the study. Detmar notes that some of the other anti-angiogenesis factors currently being studied do not appear tobe involved in normal blood vessel developm...
Reversible bone shrinkage documented in Galapagos iguanas
...f the shrinkage, because a reduction of connective tissues
between the bones cannot account for it, and that high levels of corticosterone may be involved. Perhaps as interesting to the bone shrinkage is the renewed growth of bone. Humans suffering from osteoporosis as a result of aging or space flight are ...
Awareness, quick action key to battling canine bacterial disease
...ve and rapidly advancing infection of subcutaneous tissues
with extensive tissue destruction and high mortality rates. In 1996, Miller and Prescott reported on a series of seven dogs from southern Ontario that had severe systemic disease and shock associated with infection with b-hemolytic Streptococci canis...
Tube worms in deep sea discovered to have record long life spans
...ial animals without backbones currently known."The tissues
of colonial animals like coral and anemone are continuallyrecycled by the community, so it is tough to say what a single individualis in a colonial animal," Bergquist explains. "Entire colonies can havelife spans over 1,000 years, but no individual ...
Millennium and Wyeth-Ayerst announce the discovery of key potassium ion channel modulating proteins
... Abnormalities in the electrical signals of these tissues
may form the basis for a variety of disorders incl...not cause unwanted side effects in other non-brain tissues
such as the heart. "We have found that KChIPs restore many important features of the physiological...
ASU scientists probe salamander mysteries
... a Friday, they spent most of the day scanning the tissues
for virus particles. To their disappointment, they found nothing. "You're looking for a needle in a haystack," warned the skeptical microscopist who assisted them. "That day we went home bummed," says Jancovich. "But we came back on Monday morning a...
'Biomedical switch' regulates how cells stick together and communicates
...trix between them, is critical to the formation of tissues
and organs, as well as to cellular movement and the exchange of information between cells, known as signaling. Impaired adhesion can lead to the onset of disease, such as cancer. If detached from a surrounding matrix, cells usually die within a short...
Scientists discover key molecule in transmission of AIDS virus
... the virus gets into the body and makes its way to tissues
where immune system cells reside. The AIDS virus then infects immune cells and eventually overwhelms the body's ability to fight infection. This research shines a spotlight on the first encounter between HIV and cells in the body. It offers f...
The little protein that could
...etallothionein (MT), a small protein found in most tissues
throughout the body, may help "detoxify" the brain...re also likely to be quite important in protecting tissues
from various insults such as high oxygen levels." In other words, drinking alcohol may lead to syst...
Gene tracking follows cells from embryo to adult
...ntributors. Cells from neural crest predominate in tissues
that form internal tooth components such as dentin, pulp, and cementum--the bone-like material the forms the root. However, other cells of unknown origin were also mixed in with the neural crest, suggesting that additional instructions are needed to...
Pharmaceutical and personal care products: What happens when they enter the environment - an emerging concern
...ewage and water supplies; synthetic musks in human tissues
and breast milk David Epel Hopkins Marine Station of Stanford University, Garden Grove, Calif. How a compound in the environment enters a cell WHAT: Environmental Effects of Pharmaceutical and Personal Care Products WHEN: Monday, March 27,...
How a hormonal henchman triggers death
...2000 -- Intricate experiments on fruit fly larval tissues
have provided a look at how a hormone triggers the programmed cell death that occurs when immature tissues
are pruned away to make room for adult organs. The experiments, which were designed and carried out...
The genetics of aging: New study says cell division errors may be the common link
...d to a gradual increase in cell division errors in tissues
throughout the body. This functional change begins...e package by identifying a common element in aging tissues
throughout the body," Dr. Lerner continued. Dr. Lerner noted that, "The Human Genome Project is biol...
Estrogen may fuel lung cancer growth, report University of Pittsburgh scientists
... cultured normal lung cells and normal and tumor tissues
from lung cancer patients. The researchers found ...ide receptor, or GRPR, also is more active in lung tissues
in women than in men, again providing a biological reason for why lung cancer differs between the se...
Nature's path leads scientists to new antibiotic strategy
...peptides, however, are rapidly degraded in living tissues
and can be highly toxic to human cells in addition to infectious bacteria. The Wisconsin team used unnatural, synthetic building blocks to construct the new antibiotic agents. It is possible, said Gellman, that these synthetic molecules, known as...
Identification of genes controlled by the weight-regulating hormone leptin may provide future targets for treating obesity
...loodstream, working its way to the brain and other tissues
where it carries out its job by sending a message to stop eating and to burn more fat. Mice that lack leptin are obese, weighing nearly three times more than their normal counterparts. When these obese mice are given hormone treatments, they lose wei...
Oral exposure to anti-oxidant glutathione could help prevent flu infections
...he influenza virus if administered directly to the tissues
lining the mouth and upper airway. The scientists...ge, we could directly expose the virus-susceptible tissues
to glutathione over a relatively long period of time. This could be very helpful, for example, if y...
Scientists discover 66-million-year-old dinosaur with a heart
...rus ever found with a complete skull and with soft tissues
usually lost to decay. Tendons are still connected... months," Russell says. He speculates Willo's soft tissues
were preserved by a process called saponification, in which soft tissues
are converted into a soap-l...
Medical imaging shows dinosaur heart more like bird's or mammal's than reptile's
...t fully understand how this happens, animals' soft tissues
can sometimes become fossilized in oxygen-poor environments, such as the sediment beneath a streambed. Instead of paring away the bones from their surroundings, Hammer carefully cleaned the surface of the skeleton. Before sending the specimen to its ...
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