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Tag: "double" at biology news

Sequencing of the oyster mushroom genome

...wo equivalent copies, given that this fungus has a double copy of each chromosome ?as humans do. However, the project of sequencing the complete genome involves the handling of a volume of 280 million letters, given the fact that each one of the two sets of genes has to be read several times in order to ens...

New study finds chocolate chip cookies lower cholesterol

...lesterol levels under 200 mg/dl. The randomized, double blind study researched 33 healthy adults with moderately high cholesterol between the ages 35?5 at the University of Connecticut, Storrs, CT. Participants were randomly assigned to the Right Direction Cookie group or the placebo cookie group. Two co...

Uncovering DNA's 'sweet' secret

...or. Yet the graceful, sinuous profile of the DNA double helix is the result of random chemical reactions in a simmering, primordial stew. Just how nature arrived at this molecule and its sister molecule, RNA,remains one of the greatest - and potentially unsolvable - scientific mysteries. But Vanderbil...

Backache beaten by good vibrations?

...and more about their condition." The study is a double blind randomized trial with both the volunteer and treating physiotherapist unaware of the treatment allocation. ...

New fMRI technology making brain tumor surgery safer

...ck for accuracy. Thus far, Dr. McPherson said, the double checks have confirmed the technology’s accuracy while suggesting that the technology may make brain stimulation unnecessary for many surgeries in the future. The new BrainLAB equipment also enables physicians to integrate diffusion tensor imagin...

Scientists reveal structure of gateways to gene control

...h exactly matches the periodic rotation of the DNA double helix. "It is striking how well these positions match with the architecture of the DNA as it wraps around the nucleosome's protein core," Pugh said. This result powerfully simplifies previous theories about the possible architecture of gene packa...

Opening windows may be the best way of preventing transmission of airborne infection

...g windows and doors provided ventilation more than double that of mechanically ventilated negative-pressure rooms and 18 times that of rooms with windows and doors closed. The researchers, led by Rod Escombe from Imperial College London, compared the airflow in 70 naturally ventilated clinical rooms such ...

Fruit fly gene research may shed light on human disease processes

...ents as color blindness or hemophilia, since their double dose of X genetic material helps compensate for 'defective' genes on one of their chromosomes. Men, with just one X chromosome, have less protection. Understanding the role of the X chromosome and the mechanism of chromosome counting in fruit flies...

Killing the messenger RNA -- But which one?

...of driving production of the PRPS1 enzyme to about double its normal levels. This, in turn, drove levels of uric acid up to about two times what they should be. "This confirmed that our original computer prediction of differential targeting by unedited and edited microRNAs of different sets of genes is l...

Bacteria from patient's dental plaque causes ventilator-associated pneumonia

...n that this infection can add $40,000 to costs and double the length of stay of the patient in the hospital. Ironically, it turns out that the patient’s own dental plaque is a major source of germs that cause ventilator-associated pneumonia. In results to be presented today (March 23, 2007) at the Int...

Stretching DNA to the limit

...on viral DNA, which show the unraveling of the DNA double helix upon exposure to UV irradiation. The researc... to UV light are due to the local unwinding of the double helix in some regions arising from the massive formation of crosslinked structures. "These are th...

Living with water scarcity -- world must act now

... wealthier population, the global food demand will double over the next 50 years. In the worst case scenario where practices don’t change, water use will also double. Agricultural practices are changing, but not fast enough. The Assessment shows that with wise policies and investments in irrigation, ...

Protein found to shield pancreatic cancer cells from self-destruction

...ities called vacuoles. When autophagy occurs, a double membrane forms around a cell organ, or organelle. This autophagosome then merges with a digestive organelle called a lysosome and everything inside is consumed, leaving the vacuole and a residue of digested material. If enough of this happens, the ce...

New species declared: Clouded leopard on Borneo and Sumatra

...spots within the cloud markings, grayer fur, and a double dorsal stripe. Clouded leopards from the mainland ... a tendency toward tawny-colored fur and a partial double dorsal stripe. “Who said a leopard can never change its spots? For over a hundred years we have...

Cancer tip -- Nanoparticles can damage DNA, increase cancer risk

...say (Comet assay) to quantify breaks in single and double stranded DNA. The team chose these particular nanoparticle types because they are commonly used commercially ?in electronics, textiles and sporting goods ?and easy to work with in the laboratory setting. "We observed both dose-dependent and tim...

Elucidation of the genome for diabetics with DNA chips

...e, and it has been predicted that this number will double by 2030. This increase in the number of diabetics is linked to the obesity epidemic, which currently affects 1.1 thousand million people, including 150 million children. However, heredity also makes a major contribution to the development of DT2. Abn...

Protein overexpression at heart of heart failure

...ll nonfailing (“Adaptive phase?. In the nonfailing double transgenics, the induction of beta 2a protein expression increased the activity of single ventricular L-VDCC, rendering these channels phenotypically identical to human and mouse heart failure. The authors conclude that electrical remodeling of th...

Scientists clone mice from adult skin stem cells

...d ?with reported success rates never reaching into double digits. "The efficiency of nuclear transfer is very low," says Li. "Using purified adult skin stem cells as our source of nuclei, we have found that higher nuclear transfer efficiencies can be achieved." Greco, Guasch and Li compared the cloning...

New study sheds light on 'dark states' in DNA

...reases the chances that it may be found in the DNA double helix, said Bern Kohler, associate professor of chemistry at Ohio State and head of the research team. The Ohio State chemists determined that, when excited by ultraviolet light, these three bases dissipate energy through the dark state anywhere fr...

Penn study on olfactory nerve cells shows why we smell better when we sniff

...only one type of stimuli, our sense of smell works double duty, detecting both chemical and mechanical stimuli to improve how we smell, according to University of Pennsylvania School of Medicine researchers in the March issue of Nature Neuroscience. This finding, plus the fact that both types of stimuli p...

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