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Tag: "material" at biology news

Scientists make first step towards 'holy grail' of crystallography

...ow the team, consisting of bio-medical scientists, material scientists and physicists, collaborated to develop...sing BioGlass, a substance developed by Imperial's material scientists, as a scaffold to trap and encourage the growth of protein crystals. BioGlass is a porous...

Scientists force viruses to evolve as better delivery vehicles for gene therapy

...e target of directed evolution. To provide the raw material for evolution - the genetic variation from which nature selects the best-adapted organism - the researchers created mutant viruses by introducing small variations in the genes through an error-prone polymerase chain reaction (PCR) coupled with a test...

Genetically engineered mosquitoes show resistance to dengue fever virus

...e strand, chopping it up and rendering its genetic material useless. Once this process is started, the single-stranded RNA also becomes vulnerable to dicer-2 and is cut up, thereby preventing further virus replication. On its own, this process of self-destruction happens only after the virus has already repl...

Heparin prepared synthetically could replace animal-derived drug

...ll enable us to effectively replace a variable raw material ?heparin derived from processed animal organs ?with a synthetic material ?synthetic heparin ?and have the same therapeutic result." Research in Linhardt's group at the Cen...

Study indicates dramatic rise in antibiotic-resistant community-acquired staph infections

... confirming the diagnosis by obtaining appropriate material for culture in order to achieve a definitive diagnosis and ensure appropriate treatment is given. At Grady Memorial Hospital, where the study took place, Dr. Blumberg reports that his team has already started following up on the findings: "We have w...

FDA approves first medical device using rutgers biomaterial

... during the surgical repair and leave less implant material following the resorption of the coating. Hernias occur when musculature fails and one part of the body protrudes through the resulting gap or opening into another part of the body. And although a hernia can theoretically develop almost anywhere, mo...

Finding a virus is not all bad news

...ve than the traditional technique of using genetic material directly from the animal. "Analysing a virus in a group of animals enables us to determine such things as their population size, the population changes, rate of evolution and rate of movement in the past hundred years," says Alexei, who is a lectur...

Ancient fossil DNA found preserved in crystal

...clusters of crystals remain intact and the organic material embedded in them is unaffected. Now, almost 20 years later, Weiner and Salamon have returned to these findings, reasoning that fossil bones might possess such crystal structures containing preserved ancient DNA. After treating two modern and six fo...

Manchester scientists create new bio-gel for 3D cell culture

...als (March 2006). The gel is the first pH neutral material made from combinations of dipeptides (pairs of amino acids) to provide an environment in which cells can be cultured under physiological conditions. Uniquely, the gel mimics the properties of cell scaffolds which naturally occur in the body and has ...

New organic substrate

...d by means of an industrial process. The resulting material has proved to be efficacious in growing mushrooms and other hydroponic crops ?nursery crops grown outside the soil ?and, to a lesser extent, with vegetable and forest nurseries. It is a substrate that can compete with those in the market, especially ...

Study finds 60 new genes controlled by DNA snippet

... complex, despite having one-fifth as much genetic material as wheat for instance. Medical center researchers ... our system, is controlled by tiny bits of genetic material that tell genes what to do." "Junk DNA" No More Genes are the chains of deoxyribonucleic acids (...

New weapon in battle against osteoporosis

...iciency would normally lead to a depletion of bone material and finally to "mouse osteoporosis". "We treated these mice with an active substance that bonds specifically to the CB2 receptor. In this way we were able to diminish the bone loss caused by ovary removal," explains the molecular biologist. Many ...

Secrets of the sea yield stronger artificial bone

...ater freezes to develop a porous, scaffolding-like material that is four times stronger than material currently used in synthetic bone. Although still in the investigational stages, variations of this ...

Common molecular 'signature' identified in solid tumors

...ecular "signature" made up of tiny bits of genetic material called microRNA (miRNA) that target key cancer gen... expression. For years, these tiny bits of genetic material went unnoticed ?nestled within vast stretches of the genome that appeared to be non-functional. They...

Nanopore method could revolutionize genome sequencing

...nanometer in diameter made from silicon nitride--a material that is easy to work with and commonly used in nanostructures--surrounded by two pairs of tiny gold electrodes. The electrodes would record the electrical current perpendicular to the DNA strand as the DNA passed through the pore. Because each DNA ...

Scientists uncover rules for gene amplification

...etermine the rules as to which segments of genetic material become amplified and how, oncologists and drug researchers may be able to interrupt that process and prevent the formation and growth of some tumors. Using yeast as a model organism, researchers at the Georgia Institute of Technology have discovered ...

New human retrovirus originated in mice

...Infected cells carrying the shredded viral genetic material are usually targeted for destruction by the immune...m tissue samples, the researchers isolated genetic material from each sample and tagged the genetic material with a fluorescent tracer. They then applied the fl...

Pigeons provide clue to solving common problem in heart patients

...ngioplasty uses a balloon-like device to crush the material blocking an artery. But, within three to six months, even if a stent is placed in the artery to keep it open, the vessel becomes re-blocked in about 25 percent to 30 percent of patients. This process, known as restenosis, has been described as "over ...

Indonesia - disaster relief aid in action

... For the time being further decisions concerning material or additional aid personnel will depend on information to follow via the scouts. The RDRTF has already received a generous offer from Australian colleagues via Dr. David Harris, Westmead, volunteering to provide on-call support. ISN's Team will rema...

Polymers show promise for lab-on-a-chip technology

...material's mechanical properties. They believe the material holds promise as a microscale building block. It's...pment funds have targeted silicon, the fundamental material in the semiconductor industry. But LCPs are less brittle and more pliable than silicon, Elias said, ...

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