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Tag: "failing" at biology news

Metacognition: Faced with a test, rats can check their knowledge first

...ng it, they would receive a large reward, but that failing the test would yield no reward. Declining the test would yield a small reward. Therefore, animals faced with the decision of taking or declining the test would, in principle, have the chance to weigh the likelihood that they would pass the test (and ...

Protein overexpression at heart of heart failure

...rophysiological studies on individual L-VDCCs from failing human heart have revealed an increased single-channel activity but the mechanism for this biophysical phenotype has remained unknown.3,4 In a paper in this week’s PLoS ONE, Roger Hullin of the Swiss Heart Center Bern, Jan Matthes of University of Co...

QUT scientists on the way to sifting out a cure for HIV

... unwanted particles or viruses. He said another failing of current membranes was they often formed pin-holes and cracks during the fabrication process, resulting in wasted membranes. "With this in mind we have introduced radical changes to the membrane texture because it is the membrane texture which i...

Endangered shortnose sturgeon saved in Hudson River

... debated in Congress and has been characterized as failing to recover species." However, he said, recovery of the shortnose sturgeon suggests the combination of species and habitat protection with patience can successfully recover threatened species, even next to one of the busiest cities in the world. ...

Mechanical 'artificial hearts' can remove need for heart transplant by returning heart to normal

...'artificial hearts' can be used to return severely failing hearts to their normal function, potentially removing the need for heart transplantation, according to new research. The mechanical devices, known as Left Ventricular Assist Devices (LVADs), are currently used in patients with very severe heart fail...

Learning during sleep?

... put my car keys last night, it's due to my memory failing me again. Scientists at the Max Planck Institute for Medical Research in Heidelberg have been investigating how memories might be consolidated. Their new study offers the hitherto strongest proof that new information is transferred between the hippoc...

New HIV statistics indicate increasing toll of AIDS on African American community

...ship in addressing the global pandemic, but we are failing to confront AIDS here at home," said Congresswoman Donna M. Christensen (D-U.S. Virgin Islands), Chair of the Congressional Black Caucus' Health Braintrust. "Are we willing to sacrifice another half-million African-American lives to this entirely pr...

Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack

...uld take a much greater toll on the community than failing to pre-vaccinate potential cases. To conduct the study, Longini and colleagues created a computer model that calculated the spread of smallpox via aerosol dissemination ?the most likely choice of terrorists ?within a community of 50,000. Members of...

Advance helps explain stem cell behavior

...hat would help address disease problems, injuries, failing organs or other medical issues. "If you have an electrical problem in a car, you can repair it a lot easier if you have a wiring diagram," said Michael Gross, an assistant professor of biochemistry and biophysics at OSU. "In a way that's what we're...

Getting to the heart of the heart

...g techniques to create biological replacements for failing heart valves. Felix Engel, PhD, a cardiology researcher at Children's, recently got heart muscle cells to replicate, a feat that normally occurs only during embryonic development and represents another approach to repairing injured heart muscle. By ...

Trials for new drug to overcome HIV

...ortyeight patients whose existing drug regimes are failing will receive either PA-457 or a placebo in addition to their standard drugs. There are plans to try the drug along with new regimes tailored to individual patients, though Allaway warns that larger trials are needed and PA-457 will not reach the mark...

HIV vaccine takes different tack to boosting immune response

...ing the 'brake,' we can hopefully overcome what is failing in the natural anti-HIV immune response." In the study, funded by the National Institutes of Health, Chen and colleagues examined a molecule, SOCS1, which regulates how antigens are handled by dendritic cells, specialized white blood cells that acti...

Lack of basic research putting patients at risk

...s week's BMJ. He believes that medical academia is failing patients and clinicians by neglecting this vital area of research. Basic observational research provides the information that doctors need to diagnose and treat patients appropriately, writes neurologist Professor Peter Rothwell. But in the field of...

Penicillin, amoxicillin: Step aside for strep throat treatment

...losporins were more effective than any other drug, failing at half the rate of older cephalosporins and less than a third the rate of penicillin. The new findings are crucial not only for the children treated, but for their friends. Pichichero said children and parents are much more likely to adhere to taki...

Double trouble: Cells with duplicate genomes can trigger tumors

... integrity, Boveri proposed, was a result of cells failing to divide normally, generating the double-value or tetraploid cells. Normally, human cells carry a "diploid" set of chromosomes ? that is, 22 pairs plus an "X" and "Y" chromosome in males and two "X" chromosomes in female. Tetraploid cells contain 44...

Careless reporting on HIV 'could cost lives'

...is might be the first time a report has shown that failing to do this can have serious political and public health consequences, such as ending clinical trials. However, says Lewenstein, [Mills and his colleagues] are "writing from a perspective in which they are convinced that the trials should have procee...

Sugar helps control cell division

...ss could contribute to cancer or other diseases by failing to properly control the steps and timing of cell division, the researchers say. The findings are described in the Sept. 23 issue of the Journal of Biological Chemistry, available online now. The sugar, known as O-GlcNAc (pronounced oh-GLUCK-nack), i...

Newest HIV drugs should be used with FUZEON(R)

...ass experienced patients facing HIV resistance and failing to reach undetectable viral load." Studies presented this week show that when FUZEON was given in combination with the novel HIV medication, tipranavir, an impressive 70% of FUZEON naïve patients achieved a ten-fold reduction in their viral load and...

Pair of cancer genes found to drive both cell migration and division

...uman cancers. "In cancer, you sometimes see cells failing to divide or undergoing unequal divisions. In addition, cell migration can lead to tumors spreading and developing in different places in the body," says Peter Devreotes, Ph.D., professor and director of Cell Biology at the Johns Hopkins School of Me...

Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression

...create any number of problems for an organism, and failing to properly control gene expression can be fatal. Indeed, aberrant expression of genes is the underlying cause of many different diseases. For example, the expression of inflammatory cytokine proteins by immune system cells must be finely tuned so t...

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