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Tag: "tissue" at biology news

Cellular message movement captured on video

... the bovine aortic endothelial cells, grew them in tissue culture, and filmed them while they passed fluid across the cells’ surface in a simulation of flowing blood. With that physical stimulus, paxillin consistently moved in the same direction as the fluid flow. Paxillin is found primarily at focal adh...

Enzyme delivered in smaller package protects cells from radiation damage

...ically throughout the body which may spare healthy tissue the long-term consequences of therapeutic irradiation. These results are being presented at the 10th annual meeting of the American Society of Gene Therapy, being held May 30 to June 3 at the Washington State Convention & Trade Center, Seattle. ...

CSIRO scientists join fight to save 'Tassie devil'

...ed a further 30 affected animals where both tumour tissue and tumours grown in the laboratory were examined. A recent Senior Scientist’s Scientific Forum on the DFTD reviewed progress in understanding and managing the disease and set an agenda for future research and management. “The aim is to stop ...

Research team identifies new Alzheimer's gene

...chers rapidly produced a genetic map of each brain tissue sample and isolated the GAB2 gene relatively quickly. “This Alzheimer's disease breakthrough is another powerful example of a fundamental life science discovery made by an Affymetrix customer. Our latest microarray technology continues to accele...

Loss of stem cells correlates with premature aging in animal study

...y can rapidly divide and are able to replenish the tissue with new cells. Brown explains that in the cur...g amount of DNA damage and could not contribute to tissue renewal; nevertheless, the 10 to 20 percent of cells that escaped ATR deletion were able to reconsti...

Studies to find better ways to preserve human eggs, ovarian tissue under way

... are comparing the two approaches in human ovarian tissue and eggs, or oocytes, as well as human-like cow ovarian tissue and eggs. They start with reproductive tissues because young women with cancer produce a compelli...

Brightening prospects of using fluorescent nanotubes in medical applications

... spectrum – the near infrared where skin and other tissue is transparent – that allows the nanotube light to stand out. Nanotubes are made entirely from graphitic carbon, which is non-toxic and, at least so far, experiments that have been done indicate that they do not damage living cells. By comparison...

Migration alert -- How tumor cells home in on the lymphatic system

...ate this new concept, the researchers engineered a tissue culture model of the tumor-lymphatic microenvironment and developed computational models to calculate the gradients of the signaling molecule. The study provides the first evidence that tumor cells can both produce and use the same signaling mole...

University of Pittsburgh School of Medicine researchers develop 'off-the-shelf' vascular grafts

...C-seeded polymer by surrounding tissue, exhibiting tissue formation that is consistent with a mature artery. According to Dr. Vorp, these findings in a rat demonstrate the feasibility of developing MDSC-seeded tissue-engineered vascular grafts for eventual human application. “The next step is to demonstr...

Cancer stem cells similar to normal stem cells can thwart anti-cancer agents

... samples obtained from normal lung and lung cancer tissue samples. The researchers identified a very small, ...hat looked and behaved much like normal adult lung tissue stem cells. Both the cancer and normal stem cells were protected equally by multiple drug resistance...

Research finds that circadian rhythms dominate all life functions

...onsible for the function of an organ or a specific tissue -- are chaotic under this state and don't function as a group. Lack of orchestration can be easily confused with the lack of oscillation. This makes the rhythm much harder to detect. "It's like a conductor walking away from an orchestra during a pe...

Clot-dissolving agent may be beneficial in treatment of severe frostbite

...e article. “Today, traditional therapy consists of tissue rewarming, prolonged watchful waiting and often de...h, Salt Lake City, studied the anti-clotting agent tissue plasminogen activator (tPA) for the treatment of frostbite beginning in 2001. Patients who were admi...

Researchers discover 'acquired' DNA key to certain bacterial infection

...emphysema and AIDS patients among others – infects tissue cells or “macrophages” and thus compromises the body’s immunity. Results of the study, led by researchers at Oregon State University, will be published online this week in the Proceedings of the National Academy of Sciences. Other co-authors were fr...

The mouflons of the Kerguelen archipelago

...heir efforts, the researchers used hair, horns and tissue to reconstitute the evolution of the genetic diversity of the mouflon population from 1958 to 2003. Through the contribution of Jean-Louis Chapuis, Denis Réale had access to samples from populations living on the Islands between 1988 and 1996. For th...

Modified mushrooms may yield human drugs

... then snipped small pieces off the mushroom's gill tissue and added it to a flask containing the altered bac...se commercial technology to convert the vegetative tissue from mushroom strains stored in the freezer into vegetative seed. A crop from which drugs may be ext...

Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin

... the paper notes. Among the insights into cell and tissue engineering gained from work with embryonic stem cells, it adds, are those "relevant to the engineering of functional equivalents of pancreatic, islet-like, glucose-responsive, insulin-producing cells to treat diabetes." The researchers said they ...

Researchers use MRI to predict recovery after spinal cord injury

...ndings may include cord hemorrhage, swelling, soft tissue and ligament injury, blood clots or herniated disc...uding bleeding within the spine, swelling and soft tissue injury. The results showed that severity of MSCC, bleeding and cord swelling were key indicators ...

'Nurse cells' make life and death decisions for infection-fighting cells

...re and function as the human thymus. Animal thymic tissue sold in butcher shops or at meat counters is known as sweetbread....

'Virtual Patient' to simulate real-time organ motions for radiation therapy

...t tissues move in real time according to realistic tissue biomechanical properties, De said. Xu expects t...De, who had been using the 3-D VIP-Man to simulate tissue deformation for surgical procedures, and the idea to take 3-D VIP-Man into the fourth dimension was ...

Statin treatment improves spatial memory in mouse models of Alzheimer's

... normal mice on saline. After the maze test, brain tissue then was studied to determine levels of nNOS....

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