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Tag: "evidence" at biology news

Mystery Blood Vessel Disorder Implicated In 'Mini' Strokes

...irectly life-threatening. However, there is recent evidence that people with dolichoectasia are more likely to...ked dolichoectasia with aortic aneurysm reveal new evidence that links the disorder with small vessel disease, a significant cause of lacunar or "mini" strokes ...

Youth With HIV Take More Risks After New Meds Introduced

...virus to others, says Lightfoot. "Simultaneously, evidence suggests that many people living with HIV believe that sexual behaviors that could lead to the transmission of HIV, like unprotected sex, are less risky" if viral levels are low, she adds. Although some studies suggest a shift toward risky behavior ...

Canada approves marijuana-based pain spray

...tion reflects the promising nature of the clinical evidence which will be confirmed with further studies. Products approved under Health Canada’s NOC/c policy, have demonstrated promising benefit, are of high quality and possess an acceptable safety profile based on a benefit/risk assessment for the approved ...

Turning viruses into allies against cancer

...tions separated by two to three weeks. Aside from evidence of tumor necrosis, the scientists detected expression of GM-CSF in injected tumors. "There were no obvious differences in the effects on the different tumor types," added Hu. "Following the promising data, this version of OncoVEX is now entering Pha...

Are rice and wheat behind China's population boom?

...ricultural history was," Crawford says. "We had no evidence of what other kinds of crops they grew, their relative popularity across the country and how these people may have been managing their local ecology." Crawford says what they are seeing now is a very sophisticated knowledge about growing rice - how ...

Grizzlies set to invade high Arctic?

...poke volumes. But now definitive corroborating DNA evidence seals the case of the most northerly sighting of a grizzly bear. The discovery fuels mounting evidence that Canada's High Arctic is no longer the sole preserve of the polar bear -- Nanuk is having to mak...

Africa to take it on chin again with climate change

...al climate from five computer models, provides new evidence linking drought in southern Africa to the warming of the Indian Ocean. However, it contradicts earlier studies that also connected the Sahelian drought of northern Africa to the Indian Ocean. Instead, the new results point to a late 20th-century cool...

New World founders small in number

...ge from Siberia to North America. Several lines of evidence support this model, but that's where the consensus... America 7,000 to 14,000 years ago. Archaeological evidence places the earliest American inhabitants in the New World at around 14,000 years ago. Though Hey's e...

A little stress gives beneficial oomph! to immune system

New research in mice provides more evidence that a brief bout of stress can give the immune system a beneficial boost ?under certain conditions. Laboratory results showed that acute stress ?stress that lasts for minutes to hours ?temporarily mobilized all major types of immune cells, or leuko...

Advancements In Genomics Foster Deep Sea Discoveries

...the 1950s of Claude ZoBell, who provided the first evidence of deep sea high-pressure microbes, and research begun in the 1960s by Art Yayanos, who was the first to isolate pure cultures of high-pressure-adapted microbes from their native environments. This work was funded at Scripps Institution by the Natio...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...rd University scientists presents the first direct evidence linking large-scale coastal farming to massive algal blooms in the sea. Writing in the March 10 issue of the journal Nature, the authors conclude that some highly productive regions of the ocean are much more vulnerable to agricultural runoff than w...

Study reveals dramatic difference between breast cancers in US and Africa

...gy and how much was environment. Now we have clear evidence that nature plays an important role. These tumors are biologically quite different in ways that make this a worse disease." "The discovery means we have to rethink how soon and how often we screen for breast cancer in women at risk for the most aggr...

Migratory songbirds have a specialized night-vision brain area

...ield. Surprisingly, Jarvis said, recent scientific evidence has suggested that birds have specialized molecule...pecialized night-vision brain area. "There was no evidence of such a specialized region in night migratory birds before we began this research," Jarvis said. ...

To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter

... "Downstream Migration: To Sea or Not to Sea?" The evidence for this is in the DNA of the resulting offspring. It should be pointed out that salmon are not "thinking this out" in any cognitive way, that there are some genetic controls at work that scientists don't fully understand, he says. The same is true...

South African Tribunal Asks For Damages Estimates in GSK AIDS Drug Case

...African AIDS advocates, 10 days to present further evidence & arguments regarding the damages they claim t...ues. "In our case, we will submit to the Tribunal evidence of the monetary damages suffered as a result of GSK's illegal actions in charging excessive AIDS dru...

Measuring Enzymes At End Of Cancer Pathway Predicts Outcome Of Tarceva, Taxol

...xenograft model. "This provides solid preclinical evidence that we can use toward development of a novel device that can measure CDK activity in human tissue within several hours," Ueno says. He adds that a clinical trial is currently under way that tests CDK activity both before and after patients with brea...

Secret of smallpox's success may lead to bioterror cure

...iruses in its wake. "And there has been anecdotal evidence that if you get exposed to smallpox and get vaccinated within 4 days of exposure, the vaccine will protect you," Jacobs said. The immune system is apparently better able to detect the vaccinia virus than it is smallpox, and thus vaccinia alerts the i...

Oldest cranial, dental and postcranial fossils of early modern European humans confirmed

The human fossil evidence from the Mladec Caves in Moravia, Czech Republic, excavated more than 100 years ago, has been proven for the first time, through modern radiocarbon dating, to be the oldest cranial, dental and postcranial assemblage of early modern humans in Europe. ...

Researchers find new giant amphibian fossils in Africa

...Republic of Niger in West Africa. "This the first evidence of carnivores in this area," says McGill paleontologist, and co-author, Hans Larsson. "This find is particularly interesting because the animals we found are not present anywhere else in the world at that time. These animals seemed to be restricted t...

Infants with Rare Genetic Disease Saved By Cord Blood Stem Cells

... Moreover, the findings add to the growing body of evidence showing that cord blood can save children with other fatal "lysosomal storage diseases," each of which stems from a specific enzyme deficiency. These disorders include more than 45 rare diseases, such as Krabbe Disease, Hurler Syndrome, Adrenoleukod...

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