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Tag: "skin" at biology news

Antibacterial coatings cut infection rates

...of bacterial infections, which can spread from the skin to the incision for catheter insertion, and have been known to cause anaphylactic shock resulting in death, according to Professor Griesser. Hospitals combat this problem by removing and replacing catheters at frequent intervals, and at considerable ...

Stress substantially slows human body's ability to heal

...ted eight tiny uniform blisters on their arms. The skin was removed from each blister and another device placed directly over each small wound, forming a protective bubble, from which researchers could extract fluids that normally fill such blisters. The husbands and wives also completed questionnaires ...

Serious adverse reactions to smallpox vaccine appear to be limited

...torical data. Two cases of generalized vaccinia (a skin eruption in reaction to vaccination) and 1 case of postvaccinial encephalitis (inflammation of the brain) were detected. No preventable life-threatening adverse reactions, contact transmissions, or adverse reactions that required treatment with vacci...

One small step means giant leap for spinal cord research

...sends controlled bursts of electricity through the skin and into muscles, can help patients improve their step frequency, stride length and overall walking speed. "This is a group of patients in which recovery is not expected," says Professor Milos Popovic of the Institute of Biomaterials and Biomedical ...

Langerhans cells regulate immune reactions in the skin

...er understanding of the mechanisms underlying many skin disorders such as psoriasis, lupus and skin cancer. Dendritic cells are found throughout the body and are extremely efficient at alerting the ...

Bats use touch receptors on wings to fly, catch prey, study finds

...lls, a type of "touch" cell common in bumps on the skin of most mammals, including humans. Bat touch domes are different, however, because they feature a tiny hair poking out of the center. When Zook recorded the electrical activity of the Merkel cells, he found they were sensitive to air flowing across ...

From one cell, many possible cures

...enerate injured bone . . . create new cartilage or skin . . . even reverse nerve damage. Human stem cells offer tremendous hope for the development of revolutionary medical treatments for these and a variety of other human health problems. Up until now, however, stem cell research has been slowed by ethi...

Discovering the first steps in transcription-coupled repair

...osure to sunlight typically causes hyper-pigmented skin that is dry and parchment-like, and is followed by multiple skin cancers. If carefully shielded from ultraviolet light, for example by window filters and protective ...

Implantable pumps extend lives of patients too sick for transplant

... body, but one that could be recharged through the skin without burning the skin. That way there would be no external parts, which would greatly reduce the incidence of infection." Another technological challenge involves the pump itself, Rogers said. The Novacor device is a pulsatile pump which contains...

Model identifies genes that induce normal skin cells to become abnormal

...onment of metastatic melanoma cells induces normal skin cells to become similar to aggressive cancer cells...l microenvironment on the transformation of normal skin cells, as well as on genetic triggering mechanisms and signaling pathways that could be targeted for...

Did feathered dinosaurs exist?

...sity of KwaZulu-Natal in South Africa examined the skin of modern reptiles, the effects of decomposition o...nship to birds, they suggest that decomposition of skin can lead to patterns resembling feathers. Birds have been thought to be related to theropod dinosa...

Stem cell microenvironment reverses malignant melanoma

...d metastatic melanoma cells to revert to a normal, skin cell-like type with the ability to form colonies s...?to assume a more normal melanocyte-like cell, the skin cell type of origin for melanoma. The model, which was developed in Hendrix's laboratories, consist...

Nanoparticles, nanoshells, nanotubes: How tiny specks may provide powerful tools against cancer

...milar to that which dermatologists can use to find skin cancers. According to Gobin, the researchers hope that these probes, already commercially available, can be adapted to both image nanoshells in tumors with higher resolution, and then therapeutically heat them up with a secondary laser coupled to the...

Double trouble: Cells with duplicate genomes can trigger tumors

... be genomically unstable. When injected under the skin of laboratory mice, about 25 percent of the animals developed breast cell tumors, and these tumors, like the tetraploid cells that seeded them, were also marked by similar chromosomal irregularities. The new findings confirm a far-sighted notion of ...

Anti-cancer drugs may hold promise for premature aging disorder

...accelerated symptoms of aging -- namely hair loss, skin wrinkling and fat loss. Accelerated cardiovascular...author. The new work involved using FTIs to treat skin cells taken from progeria patients and grown in laboratory conditions. If upcoming studies in a mous...

Gene therapy for muscular dystrophy fixes frail muscle cells in animal model, Stanford study finds

...w gene therapy technique that has shown promise in skin disease and hemophilia might one day be useful for... and for other diseases such as hemophilia and the skin disease, epidermolysis bullosa. Early trials using her approach have looked promising in animal mode...

Cyberkinetics, Case to develop system to help restore extremity function

...t. Electrodes may be placed on the surface of the skin or they may be implanted under the skin. The stimulator controls the strength and timing of the low-level pulses that flow to the electrodes. The sensors or switches control the starting and stopping of the pulses supplied by the stimulator. To be...

Pillows - a hot bed of fungal spores

...source of nitrogen and nutrition (along with human skin scales). There could therefore be a 'miniature ecosystem' at work inside our pillows." Aspergillus is a very common fungus, carried in the air as well as being found in cellars, household plant pots, compost, computers and ground pepper and spices....

Researchers offer proof-of-concept for Altered Nuclear Transfer

...CNT, a donor nucleus, for example one taken from a skin cell, is implanted into a donor egg cell from which the nucleus had been removed. This egg cell is then tricked into thinking it has been fertilized. That causes it to grow into a blastocyst--a mass of about 100 cells--from which stem cells are remo...

Researchers discover why melanoma is so malignant

... discovered one of the reasons why this particular skin tumor is so ruthless. Unlike other cancers, melano... shows that as melanocytes--cells that protect the skin from sun damage by producing pigmentation--morph into cancer cells, they immediately reawaken a dorm...

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