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Tag: "hold" at biology news

Few clues about African ancestry to be found in mitochondrial DNA

Mitochondrial DNA may not hold the key to your origins after all. A study published today in the open access journal BMC Biology reveals that fewer than 10% of African American mitochondrial DNA sequences analysed can be matched to mitochondrial DNA from one single African ethnic ...

Biologists probe the machinery of cellular protein factories

...e led to the development of novel antibiotics that hold promise for use against germs that have developed resistance to current drugs. Drug-resistant staph infections, for example, are a serious problem in hospitals. Noller's laboratory achieved breakthroughs in 1999 and 2001, producing the first high-r...

Silver bullet: UGA researchers use laser, nanotechnology to rapidly detect viruses

...the width of a human hair on the glass slides that hold the sample. And, like someone positioning a TV antenna to get the best reception, they tried several angles until they found that the signal is best amplified when the nanorods are arranged at an 86-degree angle. "The enhancement factors are extra...

Nanotech tools yield DNA transcription breakthrough

...ar machines and the dynamics of their moving parts hold great interest for nanotechnologists," said Weiss, leader of the UCLA group. "Beyond furthering the understanding of transcription, the novel methods and findings of this work will aid future studies of other molecular machines involved in cell repli...

Slow brain waves play key role in coordinating complex activity

...rstand how these regions process information. This hold the key to understanding diseases like autism, which clearly involves the subcortical pathways." In these clinical procedures, Barbaro removed a portion of each patient's skull and placed a grid of 64 electrodes on the surface of the brain's frontal...

'Tribbles' protein implicated in common and aggressive form of leukemia

...bles gene may lead to degradation of proteins that hold cancer in check, such as tumor suppressors. "One of our current challenges is to determine what other proteins Tribbles degrades to cause leukemia," says Pear. The findings in mice were also validated in a large database of human cancer patients. ...

Quantum dots reviewed -- Could these nanoparticles hold the cure to cancer?

...oncludes with a quick look at what the future may hold for Quantum Dots in providing new insights into understanding the pathophysiology of cancer and real time imaging and screening of tumours. The level of details provided in this valuable review paper could easily make up a chapter in an expensive ...

Two-faced protein can stop metastasis or promote it, researchers say

...tion to metastasis. But if the results continue to hold up, "it might be therapeutically possible to selectively shut down the pro-invasive function of p120 on mesenchymal cadherins while keeping the pro-adhesion function of p120 in normal epithelial cells. "We have provided a better understanding of the...

Dragonfly's metabolic disease provides clues about human obesity

...e microbes disrupting the dragonfly metabolism may hold clues for scientists looking for the root causes of metabolic diseases in humans, according to Marden and Schilder's paper "All of these symptoms, and the underlying processes behind these symptoms that we're seeing in these dragonflies, are prett...

Gene chip technology shows potential for identifying life-threatening blood infection

... vs. non-infectious inflammation. "Our findings hold out hope that scientists could develop a simple bedside blood test that would greatly speed the diagnosis of sepsis," says J. Perren Cobb, MD, director of Washington University's Center for Critical Illness and Health Engineering and a surgeon at Bar...

PLoS ONE is launched by the Public Library of Science

... the applications of this technology will no doubt hold some surprises. The beta version5 of PLoS ONE that is launched today is a work-in-progress. It is presented in beta because PLoS wishes the community to help shape PLoS ONE, and the underlying publishing platform, into its most valuable form. The s...

Like a snail through the intestinal canal

...r gliding on and as a glue which the slug can grip hold of. An intestinal robot should also have a similar layer to use. To achieve this, an adhesive layer is added to the mucus-like properties, which allows the device to be stuck to the layer of mucus. The ability to be attached to a surface covered wit...

Ocean temperature predicts spread of marine species

...t a certain temperature. The predictions appear to hold for virtually all marine animals with a larval life cycle. "We can apply this rule to animals without having to go out and measure every species," O'Connor said. "Our general model gives us a powerful new way to study larval movement with knowled...

New path from estrogen to survival in breast cancer cells described

...r cells by silencing BCA3, through eliminating its hold on NFkB transcription." Now that this cancer-promoting molecular pathway has been described, Yeh says it might be possible to interfere with a number of the players to inhibit cancer growth. "NEDD8 is key," he said. "It may be possible to design dr...

Scientists find a key to immune system's ability to remember

... remember old foes and quickly mount a response to hold them at bay. Writing this week (Oct. 23, 2006) in the Proceedings of the National Academy of Sciences (PNAS), a team of researchers led by University of Wisconsin-Madison researcher Marulasiddappa Suresh identify the role of a protein that is impo...

MIT finds most complex protein knot ever seen

...ein - ubiquitin hydrolase. That complex knot may hold some protective value for ubiquitin hydrolase, whose function is to rescue other proteins from being destroyed - a dangerous job. When a protein in a cell needs to be destroyed, it gets labeled with another protein called ubiquitin. "It's a death ...

Recycled paper and compost could both be key tools to control plant disease

...have a potential use in growing media because they hold a lot of water, just like peat and, being a waste ...it this bill in terms of being cheap and they also hold a lot of water, which is what you need for plant growth". The suppression of plant diseases was pa...

Fat stem cells being studied as option for breast reconstruction

... treat disease or regenerate tissue is believed to hold promise because of their potential to develop into different specialized cell types. Indeed, when exposed to specific conditions in the laboratory, fat-derived stem cells have been shown to differentiate into cells characteristic of those from tissue...

MIT nanoparticles may help detect, treat tumors

...he body into a cancerous tumor. Nanoparticles also hold the promise of carrying medicines that could kill ...cts such as hair loss or nausea. The researchers hold a provisional patent on their work. ...

Iowa State researchers improving plastics made from corn and soy proteins

...of biomass," he said. "We see biorenewables taking hold and expanding every day." Sam Senti, an application specialist for Vibroacoustics Solutions Inc., said the company would like to use biorenewable and biodegradable plastics in a stick lubricant it has developed. The bio-based lubricant rubs off on...

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