Tag: "function" at biology news
Neuronal excitability may hold key to age-related decline in learning and memory
By analyzing the effects of altered neuronal function
in mice, researchers have gained new understanding of how changes in a particular neuronal characteristic, neuronal excitability, may negatively impact learning and memory as we age. The work is reported by Geoffrey Murphy and Alcino Silva and their ...
New insights into chimpanzees, tools, and termites from the Congo basin
... we provide the first descriptions of the form and function
of two distinct tool sets used by chimpanzees in preying upon termites in central Africa. They differ from technologies observed in other parts of their range. Chimpanzees regularly visit two forms of termite nests and used specific tool sets to extr...
Genetic variant linked to weakened heart pumping
...ell's metabolism is associated with decreased pump function
in heart patients. The finding could provide a clu...orphism called PPAR-I7, is associated with reduced function
of the left ventricle. If additional studies confirm this association between PPAR-I7 and the weaken...
Tiny exosomes extracted from donor cells may be 'magic bullet' for drug-free transplants
...urry about within the bloodstream, and while their function
has been somewhat of a mystery, researchers are be... University of Pittsburgh School of Medicine. The function
and mechanisms for dendritic cell-derived exosomes had never before been elucidated, so Dr. Morelli ...
Award will help unlock mysteries of one of Earth's most important organisms
...attaining new knowledge regarding the composition, function
and ecological role of microbial communities in the world's oceans, according to information from the foundation, which is headquartered in San Francisco. Funding strategies include supporting Gordon and Betty Moore Foundation investigators, linking ...
New program examines stem cells' potential to repair, replace damaged tissue
...r?'" Although relatively little is known about the function
of stem cells in the body, some stem cells have been better characterized than others, such as mesenchymal stem cells that can become either fat, bone or cartilage. So if bone repair is the goal, it makes sense to use these, Dr. Isales says. Embryon...
MicroRNA study points to novel path for treating diabetes
...recently discovered microRNA gene reveals that its function
is to regulate the secretion of insulin in the pan...ings, which for the first time define a biological function
for a mammalian microRNA gene, are published in the November 11 issue of Nature . The discovery wa...
Acetaminophen shows positive in vivo cardioprotective effects in heart attack, arrhythmia
...ed that the "absence of differences in ventricular function
and in the general respiratory-metabolic status of the dogs suggests that statistically significant variability in myocardial infarction cannot be explain on the basis of ventricular mechanics, metabolism or respiration." They said the results of the...
NIEHS to develop new RNAi library to help fight disease
...rchers will be able to more rapidly determine gene function
and see which genes are responsible for adverse responses to drugs, chemicals, or other environmental stressors. "It's a rapid and powerful new tool to augment more traditional and time-consuming methods to accomplish our goal of verifying disease pa...
Signal for inflammation linked to Ras-induced tumor growth
...ion, and growth. In addition, inhibition of CXCL-8 function
in tumors expressing Ras led to a marked decrease in tumor angiogenesis. Molecules that modulate CXCL-8 expression are known targets of the Ras signaling pathway, establishing a physiological link between these signaling molecules. The researcher...
New findings may redirect strategies for treatment of prostate cancer
...ily members. The researchers conclude that AR function
is modulated by the HER2/ERBB3 pathway and not by ...u kinase-dependent modulation of androgen receptor function
through effects on DNA binding and stability" ...
Sex versus survival: A tradeoff at geographical range limits
...of Decodon actually improve other aspects of plant function
such as survival. Hence, plants growing in cold climates appear to have made an evolutionary "tradeoff" between sexual reproduction and enhanced survival, says Dr. Eckert. The doubled-edged nature of these sterility mutations can cause them to spread...
November nutrition news from the Friedman School of Nutrition Science and Policy at Tufts
...sses in the eye which contribute to the diminished function
of the ubiquitin pathway. "We hope to find a way to extend the lifetime of ubiquitin, and thereby slow down or prevent the onset of eye disease," said Taylor, who is also a professor at the Friedman School of Nutrition Science and Policy at Tufts, a...
JCI table of contents, November 15 2004
...ow the many parts of the glomerular capillary wall function
to determine the permeability of this living ultra...tacks them. Desmogleins, a family of proteins that function
to attach one cell to its neighbor, when attacked by autoantobodies, become separated from each othe...
Rare immunodeficiency provides new insight into immune system function
...ading to pronounced dysregulation of T helper cell function
and of the immune response in general....
New protein identified in development of lung cancer
... time Pirh2 has been implicated in the loss of p53 function
in tumors. Villalona and his colleagues identified the link between Pirh2 and the development of cancer by evaluating Pirh2 expression in human and mouse lung tumor samples and comparing it with Pirh2 expression in normal tissue from the same samples...
Concord grape juice increased HDL, lowered inflammatory marker linked to heart disease
...t of polyphenols, are natural plant compounds that function
as antioxidants and that have been linked to good health in a variety of ways....
Researchers call for studies on role of BRCA1 mutations in chemotherapy response
Loss of BRCA1 function
is associated with sensitivity to DNA-damaging che... division. To determine whether the level of BRCA1 function
in a patient could be used to predict response to chemotherapy for breast and ovarian cancers, D. Pa...
No getting around RET
...ine kinases, such as RET, are well-known for their function
in phosphorylation cascades that span the cell membrane. The role of the GFR co-receptors in these complexes was long thought to be limited to as a co-receptor for RET, but GFRs have recently been suggested to play other roles as well. The individua...
Researchers discover new way to boost grain crops' drought tolerance
... remained functional and maintained photosynthetic function
longer than non-altered plants. In addition, the ...m suggest that ethylene controls the level of leaf function
under normal growth conditions, as well as during adverse environmental conditions. Gallie's resear...
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