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Tag: "contain" at biology news

Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily

...e barrier for the cell against intruders, yet also contain molecules to recognize and communicate with other ...ne another via small, membrane-bound vesicles that contain proteins or other molecular cargo. When delivering their goods, vesicles from one cell fuse with the...

Common cancer gene sends death order to tiny killer

...earchers examined pancreatic cancer cells known to contain damaged or missing p53, they found that those cells had limited or zero miR-34a. "With no p53 gene or miR-34a to stem tumor development, there's no brake in pancreatic cells and uncontrolled growth leads to cancer," says Anirban Maitra, M.B.B.S.,...

Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring

...ted portions of DNA, called Ms6-hm, which does not contain any known genes. The “smoking” mice were exposed to two cigarettes per day, the equivalent – based on blood levels of tobacco by-products – of an average human smoker, according to research previously published by one of the study's co-authors. Ya...

New study reports hotel guests at risk from carbon monoxide poisoning

.... In fact, while every guest room in the U.S. must contain a smoke detector, there is no federal mandate for CO detectors. In a study published in the July issue of the American Journal of Preventive Medicine, researchers from LDS Hospital report on the incidence and impact of CO poisoning of hotel guests. ...

Brightening prospects of using fluorescent nanotubes in medical applications

...r has a purple color and, when analyzed, proves to contain a surprisingly uniform population of the brightest...opular alternative fluorescent tagging technology, contain cadmium, which is highly toxic, and so may not be appropriate for “in vivo” applications. Nanotu...

Sun exposure early in life linked to specific skin cancer gene mutation

Skin cancers often contain different gene mutations, but just how these mutat...e ages of 50 and 60. About 15 percent of melanomas contain the NRAS mutation. The findings come from the initial phase of an ongoing study that will ultimat...

Newly discovered antibody may be body's natural defense against Alzheimer's

...d of healthy donors and was previously reported to contain small quantities of antibodies against beta amyloid. "The effects of IVIG in lowering beta amyloid levels in Alzheimer's patients in our Phase I clinical trial were much more profound than we expected," Dr. Relkin explains. "We couldn't readily e...

Could fungal collection hold the key to new life-saving drugs?

... that this novel source of chemical diversity will contain new compounds that can be used to point the way to new drugs for serious diseases.” CABI currently uses its fungal collection, along with the expertise of its scientists to offer a range of services to businesses, including fungal identification, ...

New findings challenge established views on human genome

...constraint may indicate that many species’ genomes contain a pool of functional elements, including RNA transcripts, that provide no specific benefits in terms of survival or reproduction. As this pool turns over during evolutionary time, researchers speculate it may serve as a “warehouse for natural selecti...

Exploring the dark matter of the genome

...enes in the heterochromatin, previously thought to contain a mere 30 to 40 (the fly's total is 14,000 or more). Many of these genes were organized quite differently from genes in euchromatin, with much longer gaps (introns) between the coding sections of the gene (exons); unlike the introns in euchromatic ge...

In nature, proteins sweep up nanoparticles

...d as a consequence of microbial activity, actually contain a lot of protein,” says Banfield. “This is very interesting because biomineralization has traditionally been thought of as a phenomenon that occurs within a cell, or in contact with it. But in this case, we see an intimate association of proteins and...

Runners -- Let thirst be your guide

...s. Verbalis also says that sports drinks, which contain some sodium and potassium and carbohydrates, are basically water with a few additives. “There’s a misconception among the sports community that consuming sports drinks rather than water will protect you from becoming hyponatremic. That’s simply not t...

Experts predict Tamiflu could halve the pandemic influenza death toll versus no intervention

... that a prevention strategy using Tamiflu may help contain a pandemic outbreak.3 The study also predicts that if the stockpile is increased so that there is an unlimited supply of Tamiflu for treating symptomatic patients and for preventing infection in people exposed to these patients (household contact...

Skimmed milk -- Straight from the cow

...full fat. ‘In future if whole milk can be made to contain unsaturated fats – which are good for you – then it might mean that people change back to whole milk products. The big thing about dairy products is taste, so this would be a way of giving the benefits of taste without the disadvantage of saturated f...

Pistachios lower cholesterol, provide antioxidants

...ammation and oxidation," says Gebauer. Pistachios contain more lutein, ?normally found in dark leafy vegetables -- beta carotene ?a precursor to vitamin A ?and gamma tocopherol ?the major form of vitamin E ?than other nuts. It is oxidized LDL and other lipproteins that contribute to plaque formation in art...

Early exposure to indoor fungus molecules may protect infants against future allergies

...n content and allergenic proteins. Some fungi also contain mycotoxins that can contribute to disease," adds Tiina Reponen, PhD, professor of environmental health and corresponding author of the study. "Exposure to indoor molds during infancy may be associated with respiratory symptoms, such as persistent cou...

'Insulator' helps silence genes in dormant herpes virus

...enome have shown that nearby regions of the genome contain modifications indicative of silenced chromatin. The patterns found resemble well-studied regions where insulators are found in both yeast and chicken, namely the yeast mating loci and chicken globin locus. To see if insulators play a role in silen...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...te only 7 percent of the global land surface, they contain many of the earth’s species with numerous species restricted to single islands,?says Buckley. ?00 million people depend on island ecosystems for their food and livelihoods.? The study suggests that islands are particularly sensitive to the loss an...

New technique will produce a better chromosome map

...for chromosome studies because some of their cells contain gigantic, "polytene" chromosomes, each built up of more than 1,000 parallel copies of DNA strands. When stained, condensed, dark bands and lighter regions (interbands) give the chromosomes a striped appearance. For more than 70 years, cytogenetici...

Scientists identify prion's infectious secret

...and Lindquist say it is likely that natural prions contain more than one recognition element, and recognition elements can slide into a neighboring region. Many external factors can determine which recognition element is activated, in turn influencing the downstream behavior of the prion. "These findings ...

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