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Tag: "contaminated" at biology news

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...lable lines of human embryonicstem cells have been contaminated with a non-human molecule thatcompromises their po...alf serum."The human embryonic stem cells remained contaminated by Neu5Gc evenwhen grown in special culture conditions with commercially availableserum replacements...

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

... the millions of people who ingest amoeba cysts in contaminated fluids will actually develop the disease. "Every ...ly, those cysts are transmitted when people ingest contaminated food or water. The disease can cause liver damage but more often causes dysentery, a severe diarrhea...

Tiny particles could solve billion-dollar problem

...U.S. groundwater. It is found at 60 percent of the contaminated waste sites on the Superfund National Priorities List, and it is considered one of the most hazardous chemicals at these sites because of its prevalence and its toxicity. Human exposure to TCE has been linked to liver damage, impaired pregnancies and...

Bacteria collection sheds light on urinary tract infections

Food of animal origin, contaminated with E.coli, can lead to urinary tract infections ...ound out that UTIs may be caused by ingesting food contaminated with E. coli,?said Chobi DebRoy, director of Penn State’s Gastroenteric Disease Center. Previously, ...

The secret lives of whales

... from whales. “Our goal is to determine how badly contaminated oceanic fish are with persistent organic pollutants (POP’s),?says Payne, “What we are working on may be the worst public health crisis that humanity has ever faced. That’s because 70% of all humanity (4.2 billion people) depends on seafood as its pri...

Solution to Pollution: New Bacteria Eats Toxic Waste

...ered a new bacteria that is a natural cleanser for contaminated soil. The bacteria, now being used around the worl...s often use other human-made chemicals to clean up contaminated sites, but these microbes will provide a natural solution, said Sims. Bioremediation cleans up the e...

Scientists rid stem cell culture of key animal cells

... showing that existing stem cell lines are already contaminated with an animal molecule. The potential threat of animal pathogens tainting human stem cell lines poses a problem for the safe clinical use of many, if not all, of the current cell lines now in use. Until now, scientists have had to grow and sustain ...

Study: Soap And Water Work Best In Ridding Hands Of Disease Viruses

...rs first had volunteers clean their hands and then contaminated their hands with Serratia marcescens and MS2 bacteriophage. Those are, respectively, a harmless bacterium and virus comparable to, and substituted for, disease-causing organisms. After that, scientists had the subjects clean their hands with various ...

UCSD researchers maintain stem cells without contaminated animal feeder layers

...ce of human embryonic stem cells in the absence of contaminated animal products has been demonstrated by Universit...m cells grown in this animal-derived tissue become contaminated with a non-human molecule called Neu5Gc. If these stem cells were to be transplanted into people, th...

New studies suggest airborne SARS transmission is possible

...ough the air, not just through direct contact with contaminated water droplets as previous research had shown. SARS coronavirus was detected in the air in a patient's room during the 2003 outbreak in Toronto, according to a new study published in The Journal of Infectious Diseases. Another study, from Hong Kong,...

Multiple Campylobacter Genomes Sequenced

...ase-causing bacteria generally get into people via contaminated food, often undercooked or poorly handled poultry, although contact with contaminated water, livestock, or household pets can also cause disease. In 2000, C. jejuni was the first food-b...

How the environment could be damaging men's reproductive health

... 67, some of whom fished off the east coast in the contaminated Baltic Sea, while others fished off the west coast. Prof Giwercman explained: "Closed aquatic ecosystems, such as the Baltic Sea, have become heavily polluted by POPs. In spite of decreases since the 1970s, this contamination has resulted in higher ...

Drug-resistant bacteria on poultry products differ by brand

...the products from the two conventional brands were contaminated with fluoroquinolone-resistant Campylobacter (96 p...wer proportions of 'antibiotic-free' products were contaminated with fluoroquinolone-resistant Campylobacter (5 percent from Eberly and 13 percent from Bell & E...

Substance protects resilient staph bacteria

...at can be transmitted to patients in hospitals via contaminated medical implants. The new report concludes that the substance--known as poly-gamma-DL-glutamic acid, or PGA--must be present for S. epidermidis to survive on medical implants. S. epidermidis infections are rarely fatal but can lead to serious conditi...

Transgenic plants remove more selenium from polluted soil than wild plants, new tests show

...cea, absorbed two to four times more selenium from contaminated soil than the genetically unaltered, wild-type pla...ornia, as much as 100,000 cubic meters of sediment contaminated with selenium, salt and boron remain in the San Luis Drain, a concrete-lined canal originally intend...

Stem cells from brain transformed to produce insulin at Stanford

... most existing human embryonic stem cell lines are contaminated and can't be transplanted into humans. Kim thought that human neural stem cells may be one way to sidestep the more problematic embryonic stem cells. The study shows that his intuition was correct. "When you look at islets cells you realize that th...

Study reveals new technique for fingerprinting environmental samples

...r stress as well as signal progress in remediating contaminated environments. This may well develop environmental ecology into a fully quantitative science." Dubbed Environmental Genomic Tags, or EGTs, these indicators capture a DNA profile of a particular niche and reflect the presence and levels of nutrients, ...

First technology to remove prions that cause vCJD from blood launched

The risk of receiving blood contaminated with variant Creutzfeldt-Jakob (vCJD) prions may n...future cases. Variant CJD is transmitted by eating contaminated beef and may also be transmitted by a contaminated blood transfusion. Dr. Adrianno Aguzzi of the In...

Could microbes solve Russia's chemical weapons conundrum?

...ration of biotechnologies for remediation of soils contaminated by CWAs or products of their detoxification. "Bioutilization of organic compounds of reaction masses is a biotechnological method that pro-vides maximum environmental safety, since the pollutants are naturally degraded to innocuous products such as ...

Study uncovers bacteria's worst enemy

...ion a more widespread method for cleaning up sites contaminated with actinides and other radionuclides. In resear...ly at high levels far, far above concentrations at contaminated sites, and that common toxic metals, such as cadmium, nickel, and chromium, are more likely to cause...

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