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Tag: "natural" at biology news

Rescuing injured hearts by enhancing regeneration

...with rats, they combined an agent that overcomes a natural inhibitor of cell division with a naturally occurring growth factor that encourages blood vessel growth (angiogenesis). Together, these two agents enabled heart-muscle cells to multiply and the heart to regain its function after a simulated myocardia...

Scientist's persistence sheds light on marine science riddle

...at The Academy of Natural Sciences, Philadelphia's natural history museum. "That means that the data entered in the system could not have been subconsciously biased toward this result. I hope there will be many more surprising results in the years to come." The database Malacolog ( www.data.acnatsci.org/wasp...

End of deforestation in view? Experts advance new way to size up global forest resources

...e impact of industrial pressures on the expanse of natural forests, which may be rich in soil carbon and biodiversity," adds Dr. Sedjo. Implications for climate change In addition to the measurement of forest area and growing stock, the researchers offer a formula to calculate atmospheric carbon being...

First Biodiversity Census of coral reef ecosystems in the NW Hawaiian Islands

...f the priorities for conserving all the monument's natural resources." The taxonomists, biologists specializing in the classification of these organisms, are donating their time and considerable expertise. "We plan to provide for the State of Hawaii a baseline record of the diversity of a relatively ...

Artificial cornea offers better results for infants, some blind patients

...-normal vision soon after the operation." While natural corneas from donors continue to be the main source...bypasses some of the problems that come about with natural tissue. Aquavella himself stopped doing procedures with artificial implants for several years bec...

A new target for painkillers

...ab in 1979, McIntosh discovered in cone snails the natural form of a drug now used against severe nerve pain. It is Prialt, which must be injected into fluid surrounding the spinal cord as a treatment for severe pain due to cancer, AIDS, injury, failed back surgery and certain nervous system disorders....

Rising ocean temperatures, pollution have oysters in hot water

...hin the range that oysters are exposed to in their natural environment, Lannig said. In fact, this summer, which was unusually hot, water temperatures reached 32°C, she said. Each temperature group was subdivided into two subgroups, oysters that were exposed to cadmium and those that were not. The 20-day ...

Some butterflies travel farther, reproduce faster

... move to find food," he added Åland Islands are natural laboratory The study, "Population history-depen... and establish new populations. For those reasons, natural selection on flight and reproductive capability acts primarily on the females. Travelers reproduc...

Funding to tackle hospital superbugs

...dy identified new pathways that enhance the bodies natural defence mechanisms to promote the clearance of infection. The new approach has been named "Resolution Therapeutics" by the Cardiff researchers. It is hoped that research in the School of Medicine will lead to the development of other drugs that m...

Nanoparticle assembly enters the fast lane

...Their technique takes advantage of this molecule's natural tendency to pair up components called bases, known...DNA is an excellent structural material due to its natural ability to self-assemble according to well-specified programmable rules," said Oleg Gang, the Brookh...

Plant-derived molecules, genetic manipulation point to future chemoprevention methods

Scientists are using genetic studies and natural chemicals, such as plant-derived triterpenoids, to further our knowledge on how genetic and early molecular interactions can lead to cancer, and how those early interactions can be manipulated to stave off a variety of cancers. The latest studies wit...

Geneticists discover genes that make fruit fly hybrids sterile

...h faster than most other genes and diverged due to natural selection, a genetic change due to a pressure that benefits the survival of a species. The researchers would like to learn what these genes normally do within their species in order to understand why they are evolving so fast. The Dobzhansky-Muller...

An artificial cornea is in sight, thanks to biomimetic hydrogels

... artificial lens and integrate it with surrounding natural tissue. "If you build it, they will come," Myung...of the synthetic disc and forms a junction between natural and synthetic tissues. Then a clear layer of epithelial cells grow over the disc. 'Broadly interd...

Particle size matters to bacteria ability to immobilize heavy metals

...en done to describe the effect of nanoparticles on natural environments where they interact with microorganisms. This effort by the Virginia Tech team is addressing one component of a wider effort by various scientists led by a PNNL team in looking at the fundamental mechanisms of metal reduction by Shewanel...

Research holds promise for herpes vaccine

...g how the herpes simplex virus overcame the body's natural defenses. A cell infected with the herpes simpl... standpoint, subunit vaccines are poor mimics of a natural virus infection," Halford said. "There's not enough there for our immune systems to build a protecti...

Chemical tests of cell growth enter third dimension

...tor (FBB) is a device that allows cells to grow in natural 3D bundles. In the body, cells cling to supportive tissues as they grow; inside the FBB, they cling to strands of polyester fibers. For the first of the two new technologies, Yang took the basic concept behind the FBB and combined it with laboratory...

Pressured by predators, lizards see rapid shift in natural selection

...e of eons, evolutionary biologists have shown that natural selection can turn on a dime -- within months -- a...posed to a new predator, the scientists found that natural selection dramatically changed direction over a very short time, within a single generation, favorin...

The first tree genome is published: Poplar holds promise as renewable bioenergy resource

... in their leaves, branches, stems, and roots. This natural process provides opportunities to improve carbon removal from the air by producing trees that effectively shuttle and store more carbon below ground in their roots and the soil. Moreover, bioenergy crops re-absorb carbon dioxide emitted when biofuels...

Wild tigers need cat food

...er of their population each year from poaching and natural mortality, yet their numbers remain stable due to a combination of high reproductive rates and abundant prey. The study, which appears in the journal Ecology, underscores the need of maintaining protected areas with high prey densities in an overall...

For crickets, parasitic flies can stop the music

...werful evolutionary forces of sexual selection and natural selection, said UF zoology professor Jane Brockmann. On the one hand, singing and finding mates increases a male’s reproductive success; on the other, it also carries high potential costs, Brockmann said. "The interesting question is how exactly d...

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