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Tag: "body" at biology news

CSHL research ties harmless viruses to cancer

...e model that we propose is correct, protecting the body against viruses, or preventing the cell fusion that they cause may decrease the frequency of cancers and prevent their progression," said CSHL’s lead investigator Yuri Lazebnik. According to this model, cells can be made cancerous by viruses that fu...

DNA layer reduces risk of reserve parts being rejected

... Jeroen van den Beucken and John Jansen have given body implants a DNA layer. This layer ensures a better ...e. Layer by layer However, enzymes in the body will quickly break down a DNA coating. A method therefore had to be found to firmly attach the DNA t...

Ultrathin films deliver DNA as possible gene therapy tool

...o on Monday, March 26. When placed in or near a body tissue, the films are designed to degrade and release the DNA. Large strands of DNA cannot normally penetrate cells, so Lynn constructs his films with special polymers designed to bundle the genes into small tight packages that cells can import. On...

Scientists identify specific enzymes that make meningitis hard to fight

...o enzymes in meningitis bacteria which prevent the body from successfully fighting off the disease, and ma...fore into why these infections are so hard for the body to fight. "We have also discovered that this novel combination of enzymes is present in a wide v...

Engineering the heart piece by piece

... types of muscle cells taken from elsewhere in the body ?including skeletal muscles ?have been used in early clinical trials, but results are mixed. ...

Coated nanoparticles solve sticky drug-delivery problem

...mucus that protect sensitive tissue throughout the body have an undesirable side effect: they can also keep helpful medications away. To overcome this hurdle, Johns Hopkins researchers have found a way to coat nanoparticles with a chemical that helps them slip through this sticky barrier. During exper...

Reversing cancer cells to normal cells

..., and transparent embryo that develops outside the body (making it especially easy to simply watch develop...ity to develop or "morph" into one of a variety of body cells. When aggressive melanoma and other tumor cells (recent findings also report Nodal expression...

Novel laboratory technique nudges genes into activity

...to selectively activate those genes might help the body fend off cancer, Dr. Janowski said. Genes are segments of DNA housed in chromosomes in the nucleus of every cell and they carry instructions for making proteins. Faulty or mutated genes lead to malfunctioning, missing or over-abundant proteins, a...

Vitamin D deficiency widespread during pregnancy

... more constant." Since vitamin D is made by the body in reaction to sunlight exposure, it has long been known that vitamin D deficiency is more common among darker-skinned individuals, particularly in more northern latitudes, where less ultraviolet radiation reaches the Earth. Indeed, vitamin D deficie...

When smell cells fail they call in stem cell reserves

...gs are really bad.? The only nerve cells in the body to run directly from the brain to the outside worl... interested to see if other types of nerves in the body have similar repair mechanisms in play. ...

Biologists call for better choice of model organisms in 'evo-devo'

...hoose species as best representatives of ancestral body plans," said Dr Jenner. "Just because an organism has sprung from the base of the evolutionary tree does not make it more primitive and representative. "Equally, those that became separate species further down the evolutionary line are not nec...

Major link in brain-obesity puzzle found

...re able to show that the action of SH2B1 regulates body weight, the action of the metabolic signaling mole...It even moderated the impact of a high-fat diet on body weight. The experiments were performed in mice, including two types of mice that the team altere...

Breathing easy: When it comes to oxygen, a bug's life is full of it

...e same tubes that transport oxygen into the insect body usher out carbon dioxide. Insects use different methods to release carbon dioxide, including opening the thoracic spiracles (the ones closest to the head) to take in oxygen while exhaling carbon dioxide through the abdominal spiracles. Insects also u...

New UD technology removes viruses from drinking water

... of the pitcher's mound, and a single cell in your body would be the size of a ballpark. "By using elemental iron in the filtration process, we were able to remove viral agents from drinking water at very high efficiencies. Of a quarter of a million particles going in, only a few were going out," Chiu ...

Cancer cells forming blood vessels send their copper to the edge

...ife processes. Compounds that reduce copper in the body without disrupting the body's normal functions can... our understanding of how removing copper from the body can help stop angiogenesis. If a drug can be used to intercept vital copper being translocated outsi...

Unique tomatoes tops in disease-fighting antioxidants

... orange tomatoes, most of it is in a form that the body doesn't absorb well," said Steven Schwartz, the study's lead author and a professor of food science and technology at Ohio State University. "The people in the study actually consumed less lycopene when they ate sauce made from the orange tomatoes...

Pharmaceutical compounds found in nation's fresh water

...ompounds (e.g. caffeine) persist through the human body and are resistant to conventional waste water treatment practices. They are often detected in aquatic environments such as lakes, rivers and ground water, which can receive direct inputs of treated waste water. "We don't know what toxicological e...

MIT bioengineer advances survival, promise of adult stem cells

...d polymer scaffold, which remains in the patient's body during healing but then resorbs, also provides structure for the stem cells as they grow into new bone cells. "We found that when EGF was tethered to the surface it elicited different cell responses than it did when given to cells in the usual so...

Research project tackles 'regeneration' gap

...cells to fight disease or injuries. Similarly, the body has limited capacity to repair injured limbs or sp...logy at the College of Medicine. "Essentially, our body can heal itself, and that’s why many of us live to be 80. But we can’t do things like grow an arm or...

New imaging technique tracks traffic patterns of white blood cells

...by sticking to white blood cells and depriving the body of needed oxygen. Using this new imaging metho...tte. "In vivo imaging provides a window inside the body that allows us to see exactly which blood cells and which molecular constituents participate in the ...

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