Tag: "techniques" at biology news

One gene links newborn neurons with those that die in diseases such as Alzheimer's

...urons to be replaced. The researchers used similar techniques to assess UCHL1 in hippocampus and olfactory bulb neurons in mouse brains, areas where neurons are known to undergo spontaneous replacement. They found markedly low levels of UCHL1 in the replaceable neurons of both these regions. "Low levels of UCH...

Confocal imaging promises early detection of skin cancer

... Doctors can choose from some 40 different imaging techniques to detect and diagnose skin cancer, the simplest being a magnifying glass. Most techniques evaluate external skin features, such as colour or morphology. “But doctors need to look deeper into...

Norovirus found to cause traveler's diarrhea

...nted. The simple, inexpensive molecular diagnostic techniques used in this study to identify Norovirus-positive stool samples could serve to facilitate future Norovirus-related research in developing countries. "Prevalence of Norovirus among U.S. Visitors to Mexico and Guatemala Experiencing Traveler's Diarrhe...

Agilent Technologies new genome analysis technology set to accelerate Australia fight against mesothelioma

...ition is quite advanced. Agilent's new microarray techniques in comparative genomic hybridization (CGH) will allow researchers to rapidly and reliably identify genetic changes in tumorous cells. It is believed that specific genetic changes may accompany the onset and progression of the disease. Dr. Andrew Hol...

Stanford gut check shows diversity of intestinal ecosystem

...ploring the intestinal ecosystem. Using molecular techniques that detect all known types of microbes and borrowing statistical techniques from field ecology and population genetics, Paul Eckburg, MD, a postdoctoral scholar in infectious d...

Finding hidden invaders in a Hawaiian rain forest

By applying novel measurement techniques from a high-altitude aircraft, scientists detected...an wreak havoc very quickly. The fact that the new techniques allowed the scientists to detect an invader before it dominated the landscape is important to future...

Unchecked DNA replication drives earliest steps toward cancer

...ifferent cancers. Halazonetis notes that the same techniques used in his experiments to monitor replications stress and DNA breaks could also be used as an effective diagnostic tool to identify precancerous cells. "The presence of DNA breaks in precancerous and cancer cells may turn out to be the Achilles hee...

Stealth Worms May Improve Insect Pest Control

...ng traditional morphology (structure and function) techniques and through molecular screening, including PCR (polymerase chain reaction) and DNA sequence analysis. The researchers determine the nematode's temperature and moisture requirements, the insect hosts it colonizes and other characteristics. Lists of E...

Radio-tracking associated with 'dramatic shift' in water vole sex ratio

...ey say. Researchers have long been aware that the techniques they use had the potential to cause unexpected eff...fects of commonplace wildlife marking and tracking techniques may be difficult to detect and yet both important and revealing. Clearly, it is both scientifically ...

15-year hunt finds cause of pseudothalidomide syndrome

...behind a disease as rare as Roberts." Some of the techniques they used -- such as that to make many copies of DNA from a small sample -- have been around in some form for more than a decade. But others are much more recent developments. For example, the researchers found important genetic changes in part by co...

Characterizing Skin Cancer by Microarrays

...dial and vertical portions, and through microarray techniques found that, in the transition from radial to verti...de a basis for developing new molecular diagnostic techniques and, eventually, targeted therapies for patients with skin cancer. PNAS is the multi-disciplinary, ...

Remote control flies? Fly behavior controlled by laser light

...lectrodes in the brain or using similarly invasive techniques "would represent 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 ...

Purdue researchers use enzyme to clip 'DNA wires'

...ymes that are used in standard genetic engineering techniques to snip DNA so that scientists can alter the genetic structures of organisms like bacteria. DNA molecules contain "bases" called guanine, adenine, thymine and cytosine, represented as G, A, T and C. The bases combine in numerous sequences, and vario...

Sponges as drugs

...iologically-active substances. Until more advanced techniques such as chemical synthesis, genetic modification and sponge cell culture are realised, rearing in the sea remains the most reliable and effective method for obtaining the large quantities of sponge biomass, necessary for developing drugs. However, s...

Research Reveals Functions Of Harmful Shellfish Pathogens

...ellfish. It also develops high-pressure processing techniques to inactivate enteric viruses in contaminated shellfish. This research may provide better diagnostic capabilities and treatment strategies to further reduce shellfish-related illnesses. ARS is the U.S. Department of Agriculture's chief scientific r...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...contained many small sea creatures; other sampling techniques turned up relatively large specimens, including sea cucumbers up to 20 centimeters long. In addition to collecting a large number of unfamiliar specimens, Census scientists use DNA extractions to discern previously unknown differences between specie...

New miniaturised chip dramatically reduces time taken for DNA analysis

...ne and biotechnology. But traditional DNA-analysis techniques are becoming outdated as demand increases for more genetic information to be found in less time and at a lower cost. An important step forward in this direction was the creation of DNA chips, in which the UAB played a leading role in Catalonia. Hundr...

Gene silencing technique offers new strategy for treating, curing disease

...ll, where they go on to create a protein. Current techniques for turning genes on or off focus on controlling the messenger RNA once it's already produced. But blocking all the copies of messenger RNA before they can make a protein within a cell is akin to using a bucket to catch all the streams of water comin...

Map of life on Earth could be used on Mars

...shington University in St. Louis is developing new techniques to render a more coherent story of how primitive life arose and diverged on Earth ?with implications for Mars. Carrine Blank Ph.D., Washington University assistant professor of earth and planetary sciences in Arts & Sciences, has some insight con...

Circulating stem cells play small role in lung repair

...different cell types." Applying advanced research techniques that previously had been used to analyze liver and bone marrow transplant recipients, the team found that nine of 25 lung tissue specimens from five recipients contained small numbers of the male gender version of the type II pneumocytes. The proport...

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