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Tag: "animal" at biology news

Swell gel could bring relief to back pain sufferers

... Investigations have revealed that degenerated animal intervertebral discs containing the injected 'microgels' regain their mechanical properties. This development opens up the possibility of human patients being able to regain full mobility and flexibility after receiving spinal injections. This ...

Birth rate, competition are major players in hominid extinctions

...mo sapiens experienced the same reduction in large animal game, but switched to also fishing, snaring small mammals like rabbits and capturing turtles and birds. "Rather than being a specialized large mammal predator, modern humans would eat anything they could get their hands on. They eked out a living...

The origin of the brain lies in a worm

The rise of the central nervous system (CNS) in animal evolution has puzzled scientists for centuries. Vertebrates, insects and worms evolved from the same ancestor, but their CNSs are different and were thought to have evolved only after their lineages had split during evolution. Researchers from the Eu...

Uganda's mountain gorillas increase in number

... the population, a method possible only with small animal populations in a relatively small area; Bwindi Impenetrable National Park is approximately 127 square miles in size. In addition to census methodologies such as counting trails and nests (gorillas construct a nest each night), researchers used ge...

Active ingredient in common Chinese herb shown to reduce hypertension

...ressure. In a soon-to-be-released study, using an animal model, the scientists have found that tanshinone IIA does reduce blood pressure. Summary of Methodology To assess the effect of tanshinone IIA, the protocol consisted of several parts. The researchers applied the 2-kidney-1-clip protocol to...

DNA analysis reveals rapid population shift among Pleistocene cave bears

...lity of DNA sequence analysis to reveal aspects of animal population dynamics in the distant past and potent...ly illuminate the influence of human migrations in animal population changes. The new work, reported by a collaborative group of researchers including Michael...

Mosquito genes explain response to climate change

...nnsylvania. "The response to climate warming in animal populations has penetrated to the level of the gene," Bradshaw said. "It affects development, reproduction and dormancy, and this response is occurring in diverse groups of animals from insects to birds and mammals." The chromosomal map was create...

Living with water scarcity -- world must act now

...tries, diets are changing, with more dependence on animal products. In China, per capita meat demand has quadrupled over the last 30 years, and in India milk and egg products are becoming increasingly popular ?meaning an accelerated demand for more water to grow more food. Growing cities take more water, ...

Are scientists making progress in being able to regenerate bone tissue?

...ues. Bone tissue engineering has shown success in animal studies. In their article the authors review the available data on bone tissue engineering in human studies, including clinical research they themselves have conducted. They also discuss possible new directions that need to be exploited to make b...

Making mice with enhanced color vision

...ight only half as efficiently as red light. If an animal had only this type of photoreceptor, then a green ...t would look identical to the red one. But if the animal adds a second photoreceptor with different absorption properties, then by comparing both receptors, ...

Pregnancy hormone key to repairing nerve cell damage

...in this study. Subsequent tests of prolactin in animal models of MS will be required before testing of prolactin on humans can take place, but MS researchers are hopeful human trials can take place within the next several years. "This discovery has the potential to take MS therapy a step further than ...

Scientists produce neurons from human skin

...ltiply, researchers now have to rely on laboratory animal neurons to perform their experiments." In the longer term, the ability to produce neurons from skin cells opens the door to revolutionary therapeutic applications. "We could take a patient’s skin cells and use them to produce perfectly compatible ...

MicroRNA helps prevent tumors

...roRNA, a microRNA expressed in the later stages of animal development. Mayr wondered whether loss of these let-7 binding sites, and therefore loss of regulation by let-7 of Hmga2, might cause over-expression of Hmga2 that in turn would result in tumor formation. To find out, Mayr created a series of Hmga...

Viral protein is an effective preventative against infection

...from our previous experiments that if you treat an animal infected or colonized with pneumococci or streptococci with these lysins, you could cure or decolonize them," says Fischetti. "But I was looking for a way to see if lysins would work for secondary infections too, and John McCullers had a very nice mo...

Birds found to plan for the future

...SRC), marks a step forward in our understanding of animal psychology and cognition. This project was also supported with a Medical Research Council (MRC) Cooperative Grant....

Meat and two neutrons -- the key to a longer life

... Shchepinov says. The isotopes could be used in animal feed so that humans could get the "age-defying" isotopes indirectly in steaks or chicken fillets, for example, rather than eating chemically enhanced products themselves. Shchepinov says an occasional top-up would be sufficient to have a beneficial e...

DNA layer reduces risk of reserve parts being rejected

...ting. This coating was tested in cell cultures and animal experiments for its safety, immune response, bone attachment and functionalisation. The DNA layer was also found to speed up the deposition of calcium phosphate and could, for example, be adapted to promote bone and blood vessel formation. The good r...

E. coli bacteria migrating between humans, chimps in Ugandan park

...eveloped world and the inclusion of antibiotics in animal feed in the developed world," said Tony L. Goldber...rned about potential effects on human health as on animal health," he said. He noted that the exchange of microbes between non-human primates and humans is...

Magnetic system could be key to surgery without scars

... the camera or instrument, said Dr. Cadeddu. In animal studies, surgeons have been able to successfully remove a kidney using the Magnetic Anchoring and Guidance System. While working on the system, Dr. Daniel Scott, assistant professor of surgery, joined UT Southwestern as director of the Southweste...

'Terror bird' arrived in North America before land bridge, study finds

...il record and reflects its extinction." When an animal dies, its porous bones absorb groundwater as they fossilize. As the local groundwater conditions change, the rare earth elements' concentrations change, resulting in a unique chemical signature. "We used rare earth elements because they're highly ...

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