Tag: "avoids" at biology news

Smallpox outbreak: How long would it take for vaccines to protect people? Would it work?

...onse to the infection, which lessens or completely avoids the symptoms of illness." Unlike some other diseases, getting vaccinated following exposure to smallpox could provide protective effects. For example, for the flu vaccine to work, people need to get vaccinated before being exposed to influenza. Th...

Rare cell prevents rampant brain activity

One of the mysteries of the brain is how it avoids ending up in a state of chaos, something which happens only on exceptional occasions, when it can lead to epileptic fits. Scientists at Karolinska Institutet have now uncovered a new mechanism controlling how the brain keeps its neuronal activity in ...

Penn researchers replace organ in adult mice using 'single-parent' stem cells

...not destroying a viable embryo in the process also avoids certain ethical issues that currently surround embryonic stem cell science." McLaughlin and his colleagues report their findings in the Feb. 15 issue of the journal Genes & Development. "While previous research has approached the possibilit...

MIT bioengineer advances survival, promise of adult stem cells

...ypes of cells she investigates. However, she also avoids research with human embryonic stem cells following a personal experience with in vitro fertilization almost 10 years ago. "Like some other scientists I know, my personal views about creating human ES cell lines changed when confronted with the re...

Nobel Laureate finds 'elegant' explanation for DNA transcribing enzyme's high fidelity

...e scientists didn’t know either how the polymerase avoids substituting the NTPs that constitute DNA for the correct RNA building blocks, molecules that differ by only one oxygen atom. In search of an explanation in the current study, the researchers screened hundreds of crystals to achieve higher data qua...

African parasite makes component of fat differently from all other organisms

...ies in a host's bloodstream. There, the parasite avoids detection by the human immune system by replacing each of the 10 million proteins on its outer layer - known as the cell membrane - with different proteins that are not recognized by immune cells. These proteins are attached to the cell membrane by a...

'Prosthetic' retinal cells let blind mice see light

.... However, noted the researchers, their technique avoids some problems presented by other approaches to restoring vision in such diseases. These approaches include transplantation of normal photoreceptor cells into the eye or implantation of electronic retinal "chips" to replace the photoreceptor function....

Immune system response to viral DNA is unique

... these findings is how this newly described system avoids responding to genomic DNA that is contained within all cells. "If this 'tolerance' to self DNA were to break down, cells might mount an antiviral response against their own DNA," he said. "Further characterization of this pathway will shed light on ...

Liquid ventilation

...ant, a compound formed by proteins and lipids that avoids the lungs folding in on themselves before the baby gets stronger. The respirators usually employd in these cases provide artificial surfactant, but not always in sufficient amounts to provide correct therapy. In order to alleviate this situation, ...

DNA gene vaccine protects against harmful protein of Alzheimer's disease

...se Center at UT Southwestern. The gene injection avoids a serious side-effect that caused the cancellation of a previous multi-center human trial with amyloid-beta 42, researchers said. UT Southwestern did not participate in that trial. In that earlier study, people received injections of the protein itse...

Drunken elephants: The marula fruit myth

...xication would minimally require that the elephant avoids drinking water, consumes a diet of only marula fruit at a rate of at least 400 percent normal maximum food intake, and with a mean alcohol content of at least 3 percent," write the authors. Instead, the authors posit that an intoxicant other than a...

Preclinical study of a new brain tumor therapy

...treatment therefore eliminates the tumor cells but avoids damage to the normal brain tissue. The researchers found that the treatment was effective in mice implanted with human brain tumor cells that overexpressed EGFR. The treatment could eliminate established cancers and there was no evidence of recurre...

New brain scan technology could save babies' lives

... about brain function at the cot side, the scanner avoids the need to move critically ill babies to conventional scanning facilities, which may involve sedating them and has a degree of risk. The data produced by the new scanner can be used to diagnose and assess conditions such as brain haemorrhages and br...

Gene therapy for muscular dystrophy fixes frail muscle cells in animal model, Stanford study finds

... rely on a virus to disperse the DNA and therefore avoids some of the issues, including cancer and an immune reaction, that have turned up in viral gene therapy trials. Instead this approach uses naked DNA that travels through the bloodstream to cells of the body. For his part, Rando said that no matter ho...

AACR Favors 'full spectrum of stem cell research biology'

...ise by providing a transplantable cell source that avoids the problems of immune rejection. # Cancer stem cells have been described as the progenitors of breast, prostate, brain and other malignant tumors, raising the prospect of eliminating tumor recurrence following initial treatment and developing cance...

Neurologix announces positive results of gene therapy clinical trial in Parkinson's disease

...e carried out entirely under local anesthesia, and avoids leaving any devices in the body. We look forward to the completion of the patient evaluations and the final analysis of these findings." Under the clinical protocols, the last cohort of patients was treated this past spring and will complete evalua...

Spiders help scientists discover how muscles relax

...n and distorts its shape. Cryo-electron microscopy avoids these problems by rapidly freezing the sample. Using the new technique, the researchers were able to visualize the muscle tissue in a form closer to its structure in the body than had previously been possible. It took several years to refine the tec...

Researchers develop new method for facile identification of proteins in bacterial cells

...a soup of hundreds of cell proteins. The technique avoids elaborate conventional sample preparation steps by coaxing the cells into mass production of the protein the researchers wish to analyze. "Finding a specific target in a mixture of hundreds of proteins can be likened to finding the proverbial needle...

Breakthrough: Scientists create world's tiniest organic particles

...nic matter such as genes or drugs. The new method avoids harsh treatment but also allows formation of unifo...eplication in Nonwetting Templates, or PRINT, also avoids creating films or "scum layers" that would clump particles together rather than allowing them to be ...

First technology to remove prions that cause vCJD from blood launched

...roperties of red cells. A filtration approach also avoids the ethical issues associated with diagnostic testing, such as alerting a blood donor that he or she has an invariably fatal disease. Regardless, there are no available diagnostic tests sensitive enough to identify asymptomatic vCJD infected people. ...

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