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Tag: "vitamin" at biology news

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

...of a cancer cell contains numerous receptors for a vitamin known as folate. The researchers decided to coat the nanotubes with folate molecules, which would only be attracted to diseased cells with folate receptors. The experiment worked as predicted. Most of the folate-coated nanotubes ended up inside canc...

Research team receives $7.5 million to study cassava

... in several micronutrients, such as iron, zinc and vitamin A. And once the roots are harvested, certain strains of cassava can produce potentially toxic levels of cyanogens ?substances that induce poisonous cyanide production. "In Africa , improperly processed cassava is a major problem," Sayre said. "It's ...

Old drug shows new promise for Huntington's Disease

... In addition, he explained, it has been found that vitamin B12, when taken along with the drug, protects against its potential toxic effects. Co-authors of the study were Trent Nguyen, PhD, and Aaron Hamby, BS, of SFVAMC and UCSF. ...

Genetic variation alters response to common anti-clotting drug

...plained Rieder. The team focused on another gene: vitamin K epoxide reductase (VKORC1), which makes a protein that helps control clotting and is the key target of warfarin. The researchers analyzed the VKORC1 gene's DNA sequence in 186 patients on a stabilized dose of warfarin. They searched for common DNA ...

UCLA researchers identify key enzyme linked to childhood blindness

...g molecule called 11 cis retinaldehyde, related to vitamin A, which is converted upon light absorption to all...king for a gene that caused these cells to convert vitamin A into 11 cis retinol. The researchers are now studying the effects on retinoid isomerase activity ...

Beauty queens urge girls not to sacrifice their bones

...nce of proper diet (including adequate calcium and vitamin D), and sufficient exercise, in building bone strength and mass. He also pointed out that certain lifestyle activities, such as eating disorders, smoking and excessive alcohol consumption, can be detrimental to bone health. The "IOF Beauties and the...

MSU researchers receive $4 million grant to uncover gene functions

...as vegetable oils, starch for ethanol-based fuels, vitamin E and amino acids. Despite the many functions of a chloroplast, the MSU team estimates that it takes only around 4,000 genes to make a functional chloroplast, which is similar to a simple bacterium, rather than the tens of thousands of genes required...

OHSU research shows vitamin C counteracts some negative impacts of smoking on unborn babies

...h & Science University, suggests high doses of vitamin C may have potential to counteract some negative i...born to mothers who had received both nicotine and vitamin C doses during pregnancy. A third group of baby monkeys that did not receive either nicotine or vita...

Study shows how retinoic acid enters a cell's nucleus

...s for many years: exactly how an acid derived from vitamin A enters a cell's nucleus, where it has strong ant...xplains for the first time how the cancer-fighting vitamin A derivative retinoic acid (RA) gains entry into a cell's nucleus. When vitamin A enters a cell's c...

Researcher gets NSF grant to create mutant maize lines

... tailor-made properties, such as higher protein or vitamin content or easier-to-digest starch for ethanol pro...ed in the pathway that processes beta carotene, or vitamin A, thereby creating a maize plant rich in the vitamin. The project is especially important given th...

Vitamin A's paradoxical role in influencing symmetry during embryonic development revealed

...ro-posterior and left-right axes is coordinated by vitamin A. Retinoic acid exerts its influence at the stage when the embryonic stem cells enter the node region of the embryo and begin forming the embryo's three main layers of cells that organize into the brain and nervous system, the gastrointestinal tract...

Does vitamin C help prevent or treat the common cold? Maybe not, after all.

...and led many people to believe in the value of the vitamin for cold prevention and treatment. But an article ...pic, suggests that the public's enthusiasm for the vitamin may be unjustified. Robert M Douglas of the Australian National University, Canberra, and Harri Hem...

Thai spice helps cut blood sugar swings

...lieve HCA will help them lose weight. It's sold by vitamin and other specialty shops as Citrimax or Citrin, and is a featured ingredient in such dietetic aids as Herbalife's "Snack Defense" tablets. A group of Dutch researchers went back to basics and studied how and if HCA affects glucose absorption, a key...

Oldest fossil human protein ever sequenced

...sponse, as the formation of hydoxyproline requires vitamin C, which is ample in the diets of herbivores like ...e ability to form proteins without the presence of vitamin C may have been an advantage to these primates if this nutrient was missing from their diets regular...

NSAID drug protects against intestinal tumors in mice, despite poor diet and gene losses

...were fed a diet high in fat and low in calcium and vitamin D. "It appears that p21 activation through sulind...ich diet (labeled AIN-76A, also low in calcium and vitamin D) formed tumors whereas knock-out mice fed with their regular chow (which was enriched with soybean...

McGill researchers shed light on formation of carcinogen in food

... It also identifies other food components, such as vitamin C and polyunsaturated fatty acids, which may produce furan as an unwanted by-product of cooking, bottling or canning food products. "Furan and its derivatives sometimes form when amino acids or sugars are broken down by the heat of cooking," explain...

Scientists seek answers on what activates deadly anthrax spores

...anthrax. Claiborne said the group proposes that a vitamin B5 derivative known as Coenzyme A plays a crucial role in the germination of the anthrax spores. They have already shown that anthrax is missing a similar cofactor called glutathione that is common to many other bacteria, as well as humans. The rese...

Bioartificial kidney under study at MCG

...olved in diverse functions ranging from regulating vitamin D to modulating the immune response. "Existing forms of dialysis have only replaced the ability of the kidneys to rid the body of waste products and correct abnormalities in blood chemistry; they don't replace kidney function, " says Dr. Szerlip. Th...

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