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FDA sees nanotech challenges in every product category it regulates

...rall, the agency regulates products that are worth nearly $1.5 trillion annually and that account for almost 25 percent of US consumer spending. “Today, there are more than 500 manufacturer-identified nanotechnology consumer products being sold. These can be found in an online inventory maintained by the ...

Research identifies protein that signals flowering in squash plants

...to the translocation stream.” The authors screened nearly one hundred accessions of Cucurbita species to identify one, belonging to the undomesticated squash species Cucurbita moschata, that remained vegetative under LD conditions and flowered only when grown under SD conditions. The authors then used th...

Caribbean frogs started with a single, ancient voyage on a raft from South America

...peus . The field work for the study required nearly three decades to complete because many of the spec...ir discovery, the researchers sequenced the DNA of nearly 300 species of Caribbean, Central American, and South American frogs and used three mitochondrial ge...

Research shows cord blood comparable to matched bone marrow

...plants. While all bone marrow donors were matched, nearly all cord blood donors were mismatched. The main objective of the research was to compare the results after cord blood and marrow transplantation and provide guidelines to transplant physicians on the selection of the best donor for children with l...

Salty oceans provide early warning for climate change

...an water can’t possibly travel this fast (it takes nearly a century for a parcel of water to move from the South Atlantic to the North Atlantic). Instead the scientists think that energy is transferred through the ocean along a deep pressure wave. “The surge of salt generates a pressure gradient in the ocea...

Alzheimer's disease to quadruple worldwide by 2050

...viving with early-stage disease symptoms. However, nearly all of that decline would be attributable to decreases in those needing costly late-stage disease treatment in 2050. The largest increase in the prevalence of Alzheimer’s will occur in Asia, where 48 percent of the world’s Alzheimer’s cases curren...

Rising skin cancer rates are more likely to affect wealthy people, says 12-year review

...chers who looked at official cancer statistics for nearly 23,000 patients over a 12-year period, reported a ...aged areas to suffer from basal cell carcinoma and nearly two and a half times more likely to suffer from malignant melanoma. Men displayed a similar patt...

Study shows lizard moms dress their children for success

...er and has been studying side-blotched lizards for nearly 20 years. He said the lizards' main predator, the coachwhip snake, is a highly efficient hunter, and the lizards need just the right combination of traits to avoid being eaten. "The females are dressing their progeny for success, because they need...

Women well informed about breast cancer, yet lacking knowledge about current treatments

...tments after surgery.” According to the survey, nearly all respondents were aware of chemotherapy and radiation. However, fewer than one out of four had heard of newer therapies such as aromatase inhibitors or monoclonal antibodies, nor were they informed about their benefits. Doctor-patient dialogu...

Plastic that grows on trees

...x HMF yields upward of 70 percent from glucose and nearly 90 percent from fructose while leaving only traces of acid impurities. To achieve this, they experimented with a novel non-acidic catalytic system containing metal chloride catalysts in a solvent capable of dissolving cellulose. The solvent, calle...

Marine phytoplankton changes form to protect itself from different predators

...titute of Technology. “These changes in form made nearly a 100-fold difference in the alga’s susceptibility to being eaten. It’s certainly surprising that a single-celled organism can chemically sense the presence of nearby consumers, identify those consumers and change in opposing ways depending on which...

Researchers develop buckyballs to fight allergy

...granules containing histamine. They are present in nearly all tissues except blood. When mast cells are activated, inflammatory substances such as histamine, heparin and a number of cytokines are rapidly released into the tissues and blood, promoting an allergic response. The researchers found that the u...

Smoking rate has plummeted in New York City

... Mortality Weekly Report (MMWR). The 2006 rate was nearly 20% lower than the 2002 rate -- a decline that rep...a tobacco tax and smoke-free air legislation. With nearly a quarter of a million fewer smokers, New York City is leading the way on tobacco control. There are...

Antarctic icebergs -- Hotspots of ocean life

...ng and more than 120 feet high, with one extending nearly 1,000 feet into the depths. Despite the risks ...cebergs are raising the biological productivity of nearly 40 percent of the Weddell Sea’s area....

Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin

...ers announced their laboratory finding, which caps nearly four years of research, in the June 2007 issue of the medical journal Cell Proliferation, posted online this week. Their paper calls it "the first demonstration that human umbilical cord blood-derived stem cells can be engineered" to synthesize insul...

Experimental gene therapy 'abolishes' arthritis pain and lessens joint damage

...age research has found that a new gene therapy can nearly eliminate arthritis pain, and significantly reduce...ised to find that the therapy also brought about a nearly 35 percent reduction in permanent structural to joints caused by round and after round of osteoarthr...

Eavesdropping comes naturally to young song sparrows

...of the young sparrows were recorded when they were nearly a year old, as were the songs of the tutors. Analysis showed that 51 percent of the young birds’ songs were learned from tutors they overheard interacting with another sparrow in the second phase of the study. Just 19 percent came from interacting d...

Common treatment for methamphetamine overdose may damage brain cells

...s. When the rats were given haloperidol before and nearly halfway through the eight-hour period, Yamamoto and his colleagues noted more than a fivefold rise in base levels of glutamate in the substantia nigra, a part of the brain known to play a role in movement disorders such as Huntington's disease. A...

Want to save polar bears? Follow the ice

...tion and will enable landscape ecologists to bring nearly 30 years of daily collected satellite imagery and meteorological data into a Geographical Information Systems (GIS) map that will enable conservationists to more accurately predict where sea ice—a vital habitat for polar bears and seals that they pre...

For many insects, winter survival is in the genes

...mately die." Denlinger and his colleagues found nearly a dozen additional heat-shock proteins that are activated during diapause, a hibernation-like state that insects enter when temperatures drop. Insects can stay in this state of arrested development for several months. "We certainly didn't expect t...

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