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Tag: "passive" at biology news

Gene Vaccine Protects Mice Against Development Of Her2/neu Breast Cancer

...lonal antibody, but this treatment“produces only a passive and transitory immune reaction,?Lachman said.“This vaccine, however, like many that treat microbial infections,appears to create a memory in the immune system that produces a lastingprotective response.?The vaccine used in this study is a“viral-vecto...

A comprehensive response to HIV could prevent 10 million AIDS deaths in Africa by 2020

...lonal antibody, but this treatment“produces only a passive and transitory immune reaction,?Lachman said.“This vaccine, however, like many that treat microbial infections,appears to create a memory in the immune system that produces a lastingprotective response.?The vaccine used in this study is a“viral-vecto...

To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists

...his colleagues believe that cells are not just the passive victims of random mutations, but have ways of initiating mutations in their own DNA. Evidence for this includes the fact that the rates of mutation in some cells does not seem consistent with the mutation rates associated with DNA replication. Some ...

Remote control flies? Fly behavior controlled by laser light

...ent a significant step in moving neuroscience from passive observation…to active and predictive manipulation of behavior," the Cell authors write. Miesenböck also says "one could use this method to restore neural signals that have been lost" due to injury or disease, such as in spinal cord trauma, although ...

Critical step traced in anthrax infection

...e not known whether the PA pore serves simply as a passive conduit, or alternatively, plays an active role in shepherding the unfolded LF and EF molecules through," he said. The findings show that it is the latter?the pore takes an active role in protein translocation. The scientists demonstrated this role ...

Any exposure to tobacco smoke during pregnancy is risky

...fetus that can be detected at birth, but also that passive ?or secondary ?exposure causes just as much damage...ive that workplace protection be offered to reduce passive exposure." ...

Chemical 'band-aid' prevents heart failure in mice with muscular dystrophy

...in-deficient or mdx mice had about 70 percent more passive tension in response to the stretch. Compared to normal myocytes, mdx myocytes were stiffer and resistant to stretching. When they were stretched repeatedly, they started shaking and eventually contracted and died." "It's a physiologically relevant t...

Naturally occurring asbestos linked to lung cancer

...ls about the same number of Americans each year as passive smoking. About 2,500 people a year die from mesoth...e said, it was no real surprise to scientists when passive smoking was found to cause lung cancer. "Like smoking, exposure to asbestos appears to be very dose-...

Researchers Create DNA-Based Sensors for Nano-Tongues and Nano-Noses

...ues believe arrays of these sensors could serve as passive detection systems in almost any location. The sensor surface is also self-regenerating, with each sensor lasting for more than 50 exposures to the targeted substances, which means they would not need to be replaced frequently. The specificity of sin...

Chlamydia parasite lives off our fat

...ls, where they have traditionally been regarded as passive storage depots of excess fat. However, recent studies have reassessed their role. Lipid droplets are now known to be motile, dynamic and enriched for proteins known to regulate lipid synthesis, membrane traffic and cell signaling. Now in new researc...

Detection of DNA on nanotubes offers new sensing, sequencing technologies

...as breast cancer." "Optical detection allows for passive sensing of hybridization, meaning there is no need to pass voltage or current through the system," Jeng said. "Furthermore, optics yield high-resolution signals and require a relatively simple setup. And, because our detection setup is in solution, w...

Deep-rooted plants have much greater impact on climate than experts thought

... use throughout the dry season." The process is a passive one, he noted, driven by chemical potential gradients, with tree roots acting like pipes to allow water to shift around much faster than it could otherwise percolate through the soil. In many plants that exhibit hydraulic redistribution, the tap root...

Bone and cartilage growth to blame for heart valve disease

...des the first explanation of an active rather than passive process that leads to heart valve degeneration, furthering a Northwestern researcher's effort to lead a paradigm shift in the medical community's beliefs about the cause of valve disease. Heart valve disease is caused not by a 'wear and tear' phenom...

Hopkins researchers discover genetic switch that turns off an oxygen-poor cell's combustion engine

...learly shows that hypoxia doesn't simply trigger a passive shutdown of the mitochondrion," said Dang. "Instead, HIF-1 acts as a genetic switch to actively shut down mitochondrial function and prevent the production of reactive oxygen species." The Hopkins team demonstrated that HIF-1 shuts down the TCA cyc...

Where 'jumping genes' fear to tread

...lains Mattick. "It appears that TFRs might be the passive signatures of one or more poorly understood mechanisms of gene regulation that operate in higher organisms, suggesting a wider role for noncoding sequences than has hitherto been appreciated." The work was conducted under Mattick's guidance by gradu...

Rehydrate -- your RNA needs it

...he diverse roles of RNA. Once thought to be only a passive carrier of encoded genetic information, RNA is now known to regulate gene expression and other important cellular processes and to act as a sort of sensor---detecting cellular signals and carrying out appropriate reactions in response. In fact, there...

Ecologists home in on how sperm whales find their prey

...w sperm whales find prey, including luring, touch, passive listening, echolocation and vision. Recording vocalisations of diving sperm whales presents a non-invasive opportunity to document feeding activity." says Watwood. ...

Proteins as parents

...giant molecule, is responsible for controlling the passive tension of our muscles and also pulls them together again after an extension. Depending on the type of muscle, there are differences: The titin found in heart muscle is less tensile than that found in skeletal muscle and it gives the heart the necess...

New tool helps blood specialists improve patient care

... "The hematologists who use these measures are not passive learners. They are not simply reading about how to improve patient care ?they will be doing it," said Steven Allen, MD, a member of the ASH Committee on Practice, which is developing new parameters for measuring performance on the treatment of severa...

Gene-bender proteins may sway to DNA

...NA-protein fit. Scientists think DNA is largely passive in this genetic tango. But new findings by Anjum Ansari, associate professor of biophysics at the University of Illinois at Chicago, suggest DNA may not be the wallflower that many had assumed. To follow in real time the structural changes that acc...

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