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Tag: "supports" at biology news

Too much of a good thing? Excess nutrients or water limit biodiversity

... "In essence, the data in the article strongly supports a new explanation for why the world contains so many species," said Tilman. "It shows that plant diversity is directly related to the number of limiting factors (such as soil moisture, nitrogen, phosphorous, potassium and water)." It also helps e...

Engineering the heart piece by piece

...ells, and to produce the extracellular matrix that supports cells in tissue. The U-M Artificial Heart Laboratory has teamed up with a commercial partner to develop a novel perfusion system that can deliver controlled nutrient exchange to the tissue engineered heart muscle. The perfusion system is the firs...

MIT device draws cells close -- but not too close -- together

...t replicating the entire cellular environment that supports it. "If you can get away with it, you want to get rid of the supporting cells," she says. This simple device will also be useful for exploring a host of other cellular interactions. Most prominently, the device could be very useful in exploring em...

Trying to control pain can be a double-edged sword, say scientists

...Rather than constantly battling pain, our research supports the view that it is better to provide a patient with the tools to cope with his or her persistent pain." The findings are welcomed by Pete Moore, lead trainer in pain management for the Expert Patients Programme Community Interest Company. "Thi...

Stem cells engage in dialogue with the cells that regulate their futures

...ng place between the stem cells and the niche that supports them. It is tempting to speculate that maybe multiple potential niches exist for stem cells in our bodies that can be turned on to action when signaling stem cells are in the neighborhood. It may very well be that the power of cancer cells to spread ...

Hundreds of thousands of viral species present in the world's oceans

...ns in relative abundance of the viral species, and supports the notion that although everything is everywhere, the environment selects. Overall, they saw that samples from the British Columbia coast were the most genetically diverse (consistent with its nutrient-rich environment). The other three samples s...

Einstein researchers demonstrate a novel approach to treating AIDS

... the virus that causes AIDS. "This study in mice supports the idea that radioimmunotherapy might help in treating people infected with HIV," says Dr. Arturo Casadevall, chair of the department of microbiology and immunology at Einstein and a senior author of the study, which appears in the November issue of...

Why do some queen bees eat their worker bee's eggs?

... current issue of The American Naturalist strongly supports Hamilton's original theory. Tom Wenseleers and Francis Ratnieks (University of Sheffield) compared 90 species and found that workers' sons are reared 100 times less in species with a queen mated to multiple males. They also found worker policing by t...

New bird discovered on unexplored Columbian mountain

...-going commitment to the environment from BP, whom supports the BP Conservation Programme Awards. This year, the programme awarded 27 winning teams from 21 different countries with support totalling $475,000. The awards support the vital work of a new rising generation of conservation professionals and dr...

Common ancestry of bacterium and plants could be key to an effective new treatment for chlamydia

...on heritage. That specific example, an enzyme that supports protein production, could lead to antibiotics specific for this form of STD." The discovery is an unexpected turn in solving the mystery of how plants produce lysine, one of the 20 amino acids normally found in proteins. Scientists have known the ...

First Quantum Grant to fund stem cell repair of damage from stroke

... The newly created NIBIB Quantum Grants Program supports researchers in the development of innovative biomedical technologies in hopes of making a significant impact in the prevention, diagnosis and treatment of disease. Funding was awarded to only one grant application out of more than 100 submitted. K...

Two studies on bee evolution reveal surprises

... major fossil discovery, which the researchers say supports a new hypothesis in bee evolution, was published in the Oct. 27 issue of Science. Scientists have long believed that bees first appeared about 120 million years ago -- but previous bee fossil records dated back only about 65 million years. Danfor...

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

...a microscope), they form the complex tapestry that supports the existence of the larger animals, and changes in their abundance or diversity are often the first indicators of environmental impacts or changes. These groups of organisms are also the least understood, and many new species records for the NWHI, a...

'Conversation stoppers' fight deadly bacterial infections

...nderstanding of the complex metabolic network that supports the endocannabinoid/NAE system in vivo," Cravatt said. "From a therapeutic perspective, any of these enzymes could represent an attractive drug target for a range of human disorders in which disruption of endocannabinoid signaling by cannabinoid rec...

Nanotechnology propels advances in regenerative medicine research

...nderstanding of the complex metabolic network that supports the endocannabinoid/NAE system in vivo," Cravatt said. "From a therapeutic perspective, any of these enzymes could represent an attractive drug target for a range of human disorders in which disruption of endocannabinoid signaling by cannabinoid rec...

Brown seaweed contains promising fat fighter, weight reducer

...nderstanding of the complex metabolic network that supports the endocannabinoid/NAE system in vivo," Cravatt said. "From a therapeutic perspective, any of these enzymes could represent an attractive drug target for a range of human disorders in which disruption of endocannabinoid signaling by cannabinoid rec...

Study shows enzyme builds neurotransmitters via newly discovered pathway

...nderstanding of the complex metabolic network that supports the endocannabinoid/NAE system in vivo," Cravatt said. "From a therapeutic perspective, any of these enzymes could represent an attractive drug target for a range of human disorders in which disruption of endocannabinoid signaling by cannabinoid rec...

Unraveling where chimp and human brains diverge

...s are very meaningful," said Oldham. "This finding supports the theory that variations in the DNA sequence contributed to human evolution." Relying on a new analytical approach developed by corresponding author Steve Horvath, UCLA associate professor of human genetics and biostatistics, the UCLA team used...

Geneticists discover genes that make fruit fly hybrids sterile

...t of Molecular Biology and Genetics. The finding supports the Dobzhansky-Muller model, a theory from the 1930s that suggests hybrid incompatibilities (such as death or sterility) are caused by genes that have evolved from a common ancestor but diverged in each of the species. More specifically, in the comm...

Researchers discover that sheep need retroviruses for reproduction

...for all mammals, including humans. "Our research supports the idea that endogenous retroviruses shaped the evolution of the placenta in mammals and then became indispensable for pregnancy, and thus may be why they are expressed in the placenta of many mammals," he said. "The enJSRVs arose from ancie...

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