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Tag: "formed" at biology news

Magnetism and mimicry of nature hold hope for better medicine, environmental safety

...llect extremely tiny droplets of fluids ?a surface formed by mimicking the natural self-cleaning process exhibited by the leaves of the Lotus plant, Hayes explains. Water and biological fluids typically bead up like a ball on superhydrophobic surfaces, but the introduction of a magnetic field produced by ...

Neurons grown from embryonic stem cells restore function in paralyzed rats

...y to the gastrocnemius muscle in the lower leg and formed functional connections, called synapses, with the muscle. The rats showed an increase in the number of functioning motor neurons and an approximately 50 percent improvement in hind limb grip strength by 4 months after transplantation. In contrast, no...

How ancient whales lost their legs, got sleek and conquered the oceans

...ause ancient whales' hind limbs remained perfectly formed all the way to the toes even as they became smaller suggests that Sonic hedgehog was still functioning to pattern the limb skeleton. The new research shows that, near the end of 15 million years, with the hind limbs of ancient whales nonfunctional a...

New egg freezing technique offers hope to hundreds of women

...each time (compared with an average of 1.1 embryos formed from fresh eggs). Eleven healthy babies were born (nine singletons and one pair of twins), while two pregnancies miscarried. The women were aged between 25 and 37. Dr Kuwayama said: "The conventional slow freeze-thawing method has been used successf...

Study identifies new role for breast cancer susceptibility gene

...archers found that a defect in a repressor complex formed by BRCA1, CtIP, and another known transcription repressor, ZBRK1, released the gene for ANG1 from repression and promoted survival of neighboring blood vessel cells and formation of capillary-like structures. Further studies demonstrated that mouse m...

Structure determined for p53 tumor suppressor protein as bound to DNA for anti-cancer activity

...this study.) The researchers found that the dimers formed in solution prior to crystallization attempts took on a form that was incompatible with DNA binding. "There's an inactive form of the p53 dimer that's unable to bind DNA in the correct fashion," Marmorstein explains. "We knew there had to be a stru...

Researchers show how brain decodes complex smells

... and neurological components underlying perception formed and evolved. ...

New stem-cell findings can help the body to cure itself

...t has long been known that the new cells are often formed by immature cells known as stem cells, but the mechanism regulating the number of new cells produced has remained something of a mystery. However, in a new study to be published by Cell stem-cell researcher Jonas Frisén has succeeded in showing how t...

Brain-computer link lets paralyzed patients convert thoughts into actions

...hard Friehs and Mijail Serruya, all then at Brown, formed Cyberkinetics, which was incorporated in 2001. In 2002, they merged with Bionics, makers of the sensor, raised $5 million, and applied to the FDA for approval to conduct a pilot clinical trial. The trial began in 2004. So far, four patients have enro...

Researchers unveil strategy for creating actively-programmed anti-cancer molecules

...could be injected separately, with the new complex formed in vivo. The authors note that even though the administration of two separate compounds might complicate regulatory approval, the regimen could have advantages-for example, an imaging agent could be attached to the small molecule, allowing a physicia...

Compound in dairy products targets diabetes

...ry products such as milk, cheese and meat, and are formed by bacteria in ruminants that take linoleic acids ?fatty acids from plants ?and convert them into conjugated linoleic acids, or CLA," says Jack Vanden Heuvel, professor of molecular toxicology in Penn State's College of Agricultural Sciences and co-d...

Ring-like formations in drying DNA drops could affect hybridization studies

...edge, the DNA became increasingly concentrated and formed a liquid crystal with concentric chain orientation...d through the liquid crystal, creating cracks that formed a periodic zigzag pattern." To examine the structure and behavior of the DNA liquid crystal, the re...

UNH researcher restoring oyster reefs to Great Bay

...-resistant young oysters. Natural oyster reefs are formed by live oysters atop mounds of empty shells; one initiative of Grizzle's lab is soliciting "recycled" empty shells from oyster harvesters that will eventually be returned to the bay to provide substrate. Grizzle likens his role in oyster reef resto...

Prion find points way to test for human 'mad cow' disease

...est commercially available, Soto and UTMB recently formed a startup company, dubbed "Amprion." "All our effort so far has been to prove the scientific concepts, so we're building this company to go into issues of development, scalability and practicality," Soto said. "We are hopeful that development of thi...

Discovery could aid fight against cystic fibrosis infection

...way. The Harvard and Argonne researchers quickly formed a collaboration and confirmed the hypothesis. They then turned their attention to Hcp1 in cystic fibrosis patients to gain more insight in the role of Hcp1 during infection. Working with cystic fibrosis patients at Children's Hospital Boston, the ...

Brain region linked to fly slumber

...leep may function to consolidate memories that are formed during the day -- something that is known to occur in vertebrates. Sleeping flies are similar to sleeping humans. Both are groggy when woken suddenly and need extra slumber if sleep deprived. It's therefore possible, the authors argue, that a mechan...

Vaccine shown effective against chancroid

...ction. Blood tests showed that the immunized pigs formed antibodies that prevented the chancroid bacteria from binding hemoglobin and, hence, obtaining the heme it needs to survive, the authors said. In skin biopsies of the immunized animals, the researchers found no viable chancroid bacteria. An HIV va...

Bacteria could make new library of cancer drugs that are too complex to create artificially

...sed closely on the form of streptorubin B normally formed by the bacteria. Some of these analogues of streptorubin B could provide the basis for developing useful new anti cancer drugs. Professor Challis said: "This approach combines the strengths of conventional organic synthesis, with the synthetic ...

Scientist works to improve treatment for brain tumors

...r of Excellence. The goal of the center, which was formed in 2003, is to find better treatments ?and one day a cure ?for malignant brain tumors. In addition to its focus on research, the center provides a comprehensive program for patient care, and is the first center in the state to offer Gamma Knife stere...

With record resolution and sensitivity, tool images how life organizes in a cell membrane

...r, which analyzes the mass of small molecular ions formed when a focused ion beam runs across the surface of a sample. ''You take everything in the beam's focal area, which is about 100 nanometers in diameter and about 10 nanometers deep for our experiment, and you obliterate it,'' Boxer said, explaining ho...

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