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Tag: "based" at biology news

Freeze! Scientists film proteins at work by freezing them at different states

...mmakers. However, scientists from these institutes based in Grenoble (France) have managed to produce a mov...Science. Most of the research done on proteins is based on their study in a resting state and their study in movement is extremely limited due to technologi...

Discovery of an HIV inhibitor in human blood points to new drug class

...he treatments all fall into one of four categories based on their modes of action, and a growing number of HIV strains are becoming drug resistant. HIV resistance to one drug can lead to resistance to other drugs in the same class, a phenomenon known as crossresistance. "You want a lot of drug classe...

Small molecule dervived from Rb2/p130 could act as cancer therapeutic

...archers reported their findings, "A small molecule based on the pRb2/p130 spacer domain leads to inhibition of cdk2 activity, cell cycle arrest and tumor growth reduction in vivo," in the March 22 issue of the journal Oncogene ( http://www.nature.com/onc ). Rb2/p130 was discovered in the early 1990s by An...

Flavanols in cocoa may offer benefits to the brain

...igham and Women’s Hospital, presented new findings based on his ongoing work with the Kuna Indians of Panama, who are heavy consumers of cocoa. The indigenous population still living on the Islands near Panama consume a type of cocoa rich in flavanols on a daily basis and experience unusually low rates of...

Termites get the vibe on what tastes good

...e ability to differentiate between food sources is based on the vibrations of the food that the termites are eating, although the exact mechanism for this ability is yet to be explored. "Scientists have known for some time that termites are receptive to vibrations," Mr Inta says. "But these results demon...

Re-analysis of cigarettes confirms tobacco companies increased addictive nicotine 11 percent

...is agent in cigarettes. This independent analysis, based on data submitted to the Massachusetts Department of Public Health (MDPH) by the manufacturers, found that increases in smoke nicotine yield per cigarette averaged 1.6 percent each year, or about 11 percent over a seven-year period (1998-2005). Nicot...

Health Canada approves cold and flu medicine

...ontrast, claims with the term “traditional?are not based on scientific evidence and products in the "monograph" category have claims which are not supported by specific research on their particular product. “There’s no cure for the common cold,?Dr. Shan stated. “So, in medicine the traditional strategy ...

New sensor detects gaseous chemical weapon surrogates in 45 seconds

...o take it to the next level." The instrument is based on Laser Photo-Acoustic Sensing, or LPAS, and infrared Quantum Cascade Lasers, or QCLs. LPAS is an exquisitely sensitive form of optical absorption spectroscopy, where a pulsed laser beam creates a brief absorption in a sample gas, which in turn crea...

Scientists unlock mystery of embryonic stem cell signaling pathway

...quisite to the successful development of stem cell based therapies."...

Largest genomic search finds genes that may contribute to autism

...a child's chances of having autism. The findings, based on genetic samples from nearly 1,200 families with two or more children who have autism, were published today in Nature Genetics by more than 120 scientists from Europe and North America who make up the Autism Genome Project. The project was launc...

Severe mental retardation gene mutation identified

...een predicted to play a role in mental retardation based on the previous genetics work. It was found only because we were systematically looking at all the genes on the X chromosome irrespective of what they do." X-linked mental retardation is severe. Some patients require total care and may not have l...

Biologists produce global map of plant biodiversity

...ental conditions alone." Combining field-survey based species counts from over a thousand regions worldwide with high-resolution environmental data, the scientists were able to accurately capture the factors that promote high species richness of plants. "This allowed us to estimate the richness of y...

Batten down the hatches against HIV

...effect to the cells than current transport systems based on liposomes. T-cells are one of the types of white blood cells important for a good immune defense; they detect and destroy virus-affected cells. However, they themselves are among the targets attacked by HIV. In order to enter into a T-cell, the...

Triplex assay used to assay duplex genomic DNA

... this time, but rather to develop a flow injection based instrument which is matched to our chemistry," continued Daksis. Their Genome Flow® instrument, which employs hardware from FIALab Instruments of Bellevue, Washington, has one moving part, the syringe pump. It allows samples to be automatically quant...

Buckyballs used as 'passkey' into cancer cells

...ated in Barron's lab. Bucky amino acid, or Baa, is based on pheylalanine, one of the 20 essential amino acids that are strung together like beads on a necklace to build all proteins. Barron's graduate student, Jianzhong Yang, developed several different Baa-containing peptides, or slivers of protein con...

Twenty of world's 162 grouper species threatened with extinction

... the multimillion-dollar live reef food fish trade based in Hong Kong and comprise one of the most valuable groups of commercial fishes in chilled fish markets of the tropics and sub-tropics. Around the world, consumers pay up to $50 per kilogram for grouper. “This shows that over-fishing could decimate...

Like salty food? Chances are you had low blood sodium when you were born

...ardians. The youngsters were admitted to the study based on whether they had received neonatal diuretic treatment during their first month of life (n=23) or were a matched control having received no diuretic treatment (n=18). Of the total, 21 were Arabs (14 boys, 7 girls) and 20 were Jews (11 boys, 9 girls...

How to manage forests in hurricane impact zones

... in Athens, GA, report the results of a case study based on the effects of Hurricanes Katrina and Rita. Th...project leader of the SRS disturbance ecology unit based in Athens, GA. "But those adaptations only go so far in the face of a major hurricane. Forest owners...

Speeding 'fingertip' discovery -- 20 years of protein info in 1 place

...eparates them by size and identifies the fragments based on their mass - their size and weight. The process...hey might be and nobody wants to chase false leads based on wrong guesses.? Pandey says the original goal of the research was to identify accurately as ma...

Prehistoric mystery organism verified as giant fungus

...of Natural History. "He built up a convincing case based on the internal structure of the beast that it was...lished the first research on Prototaxites in 1859, based on specimens found along the shores of Gaspé Bay in Quebec, Canada. Hueber pored through Dawson’s fi...

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