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Tag: "challenge" at biology news

Confidence in memory performance helps older adults remember

...se that age-related losses or lapses in memory can challenge our deeply embedded sense of control," says Lachman. "Thus, we find an increase with age in beliefs that memory declines are an inevitable, irreversible, and uncontrollable part of the aging process. These beliefs are detrimental because they are ass...

Resveratrol prolongs lifespan and delays onset of aging-related traits in a short-lived vertebrate

... aimed at aging-related diseases needs to face the challenge posed by the lifespan of the available animal models--mammalian models for aging are relatively long-lived and aren't as easily studied as shorter-lived species. Resveratrol is an organic compound naturally present in grapes--and particularly enric...

One in 14 men having a heart attack drive themselves to hospital

..." concludes Dr O'Donnell. "And it's also time to challenge the image of the typical male heart attack victim. "We are particularly concerned that women face much longer delays, both in the time it takes them to get to the hospital and in receiving treatment and being admitted when they arrive. "Women ...

Mayo Clinic researchers challenge sepsis theory

...on interfere with the cells. The Mayo researchers challenge that long-held concept with a new theory in an opinion piece in the current issue of Trends in Molecular Medicine http://www.sciencedirect.com/science/journal/14714914 . Their findings suggest that sepsis begins with a change in certain cellular rec...

Nearly half of people who need cholesterol treatment don't get it

...f the current analysis was to learn more about the challenge of implementing cholesterol treatment guidelines issued by the National Cholesterol Education Program. For the study, researchers measured participants' blood pressure, height, weight and cholesterol and asked them about family history of heart att...

Plant-derived vaccines safeguard against deadly plague

...More than half the vaccinated animals survived the challenge with all forms of the antigen, and guinea pigs vaccinated with V antigen alone had the highest survival rates. "This study provided validation of our plant expression system, that it can produce the bacterial antigens in a native form that will al...

Climate change drives widespread amphibian extinctions

...and immediate threat to biodiversity and a growing challenge for humankind. The decline of amphibians in apparently pristine, protected habitats in Costa Rica and elsewhere has perplexed conservation biologists since 1990, when the problem was first recognized. At least 110 species of brightly colored harlequ...

Rice University researchers create 'nanorice'

...die in the brain of Alzheimer's patients. Our next challenge is to develop drugs that directly and selectively target the excessive peroxidase of amyloid-beta, which could lead to the first significant therapy for Alzheimer's disease." ...

Supersized 'island' of resistance genes discovered in an infectious bacterium

...umannii genome is 'anticipating' any antibacterial challenge by setting up some kind of easily accessible 'shelves' to store the antibacterial resistances genes as they become needed and are available in the environment," Claverie said. The research team compared the entire genomes of two A. baumannii strai...

Alzheimer's study first to explain death of brain cells

...die in the brain of Alzheimer's patients. Our next challenge is to develop drugs that directly and selectively target the excessive peroxidase of amyloid-beta, which could lead to the first significant therapy for Alzheimer's disease." ...

How the octopus forms an elbow

...he level of joints--is the optimal solution to the challenge of achieving precise point-to-point movements by a limb. ...

Advanced genomics and proteomics improve the diagnosis and treatment of a deadly lung disease

... structure of Dicer, Doudna noted, was a technical challenge as the crystals are small. But she said that the work was facilitated by access to the HHMI-supported crystallography beam lines at the Lawrence Berkeley National Laboratory's Advanced Light Source. The synchrotron at the Advanced Light Source is cap...

Molecule does more than slice and dice RNA

... structure of Dicer, Doudna noted, was a technical challenge as the crystals are small. But she said that the work was facilitated by access to the HHMI-supported crystallography beam lines at the Lawrence Berkeley National Laboratory's Advanced Light Source. The synchrotron at the Advanced Light Source is cap...

Watching the brain switch off 'self'

...of consciousness and perception. The experimental challenge that the researchers faced was to design one task that could be used to activate specifically either sensory processing or introspection brain areas. Their solution was to ask subjects to look at the same pictures or listen to the same musical phrase...

UCSB researchers discover shape matters to macrophages

...rgets of varying shapes. Mitragotri says the next challenge is clear: learning how to engineer the shape of particles to enhance, delay or prevent phagocytosis. Such a discovery, for example could allow researchers to design drug carriers that can be purposefully retained by the body for a longer period of ti...

Growing crops to cope with climate change

...f Executive, said, "Climate change presents a huge challenge for the world. Although every effort must be concentrated on reducing the impact of human activity on the environment, science should also be answering questions about how we can live in an altered climate. Research such as this helps to present answ...

UCI researchers discover key factor for survival of human embryonic stem cells

...erentiate into any cell in the body, it has been a challenge to keep them alive as single cells in an undiffere...nstead, causing harm to the patient. A significant challenge has been to prevent the formation of tumors by ensuring that all cells are differentiated before the...

The Amazon in 2050: Implementing the law could save a million square kilometers of rainforest

...ost damaging in terms of new deforestation. The challenge of Amazon conservation is to find ways to redirect political and economic forces towards this second, more sustainable future scenario, conserving most of the forest for centuries to come. According to co-author Daniel Nepstad, "By building a policy-...

Environmental metagenomics diagnosing extreme environments, tapping opportunities for clean energy

...es coexisting in a single niche," says Rubin. "The challenge is that the vast majority of microbes are resistant to being grown under standard laboratory conditions. Through the emerging strategy of metagenomics--isolating, sequencing, and interpreting the DNA extracted directly from the environment in questio...

For one Stanford doctor, the beat goes on during open-heart surgery

...technically demanding," said Ihnken discussing the challenge of working on a still-beating heart shortly before he stepped into surgery to do so. "Surgeons don't want to put up with the stress. But it's so beneficial for the patient." Despite its reputation as a technically tricky procedure, beating-heart sur...

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