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Tag: "damaging" at biology news

German researchers develop first non-invasive test to measure skin aging

...ch the dermis with intense pulses of light without damaging the upper layers. By two different quantum processes, collagen and elastin will then respond by glowing blue and green. Currently, dermatologists who want to check out the collagen network of a patient's dermis need to remove a sample of tissue and...

Intravenous gene therapy protects normal tissue of mice during whole-body radiation

...hiladelphia. "Ionizing radiation can be extremely damaging to cells, tissues, organs and organ systems," said...inistration of gene therapy appears to prevent the damaging effects of radiation, suggesting it is a viable delivery method," said Dr. Greenberger. "Future clin...

Neural networking nanotubes

...ed voltage that stimulates the nerve cells without damaging them. Kotov and his colleagues report that such devices might find use in pain management, for instance, where nerve cells involved in the pain response might be controlled by reducing the activity of those cells. An analogous device might be use...

Mayo discovers protein as potential tactic to prevent tumors

..., and the errant cell dies without propagating its damaging genetic message to progeny cells of its own." "As patients and their physicians seek to control or cure tumors, research is providing new approaches to limiting cancer from growing and spreading," Dr. Tindall said. "With this new understanding of ...

Resistant bacteria increasing source of muscle infection

...ne, pvl, permits holes to be poked into the cells, damaging them irreparably. "There seems to be an association between bacteria carrying the pvl gene and the severity of disease," she said. However, she said, they have not yet determined whether the problem is this specific gene or another that is close to...

What animals can tell us about hemorrhage, organ transplants and aging

...s, not only suffer less DNA damage when exposed to damaging agents, they have a greater ability to repair the damage when it occurs, Buffenstein said. Oxidative stress. The prevailing theory has been that oxidative stress -- damage caused to cells by rogue oxygen atoms known as reactive oxygen species -- s...

Vaccine combined with short-term postexposure antibiotics protects monkeys from inhalational anthrax

... progress. The toxins are thought to act mainly by damaging defensive cells called phagocytes, causing the immune system to malfunction. The organism then spreads unimpeded to all major organs of the body, causing tissue damage and death. While most spores probably germinate within a few days, some spores ca...

UGA scientists engineer root-knot nematode resistance

...hey cause the roots to grow large galls, or knots, damaging the crop and reducing its yields. Working with assistant research scientist Guozhong Huang and research technician Rex Allen, Hussey discovered how to make plants resistant to root-knot nematode infection. Eric Davis at North Carolina State Univers...

Plant diseases threaten chocolate production worldwide

... According to Ploetz, the three most important and damaging cacao diseases are black pod, frosty pod, and witches' broom. Black pod occurs worldwide and has the largest impact, while frosty pod and witches' broom are restricted to tropical America. "Frosty pod and witches' broom would devastate cacao produc...

Selectively blocking inflammatory signals may protect mice from MS

...vate the immune system -- plays a critical role in damaging the cells that produce myelin, the protective coating that lines healthy nerves. Interferon not only leaves these cells, called oligodendrocytes, incapable of repairing the damage but can also kill them directly. "Interferon-gamma is not normally f...

University of Minnesota researchers take new look at cellular suicide

...ave now discovered that after they expose cells to damaging amounts of ultraviolet light, a form of JNK initiates both of the cellular processes that culminate in DNA destruction. In one process, JNK starts a chain reaction that leads to the activation of an enzyme that chops up DNA. In the other process, JN...

Prozac's target revealed

...to-Mars levels of exposure to a particular kind of damaging radiation that's prevalent in space. ...

Natural vitamin E tocotrienol reaches blood at protective levels

...ts of free radicals. Free radicals are potentially damaging by-products of energy metabolism that can damage c...y acid linoleic acid, which can directly stimulate damaging free radical activity. Fatty acids are related to stroke: They rapidly accumulate when a clot in a v...

Slow-frozen people? Latest research supports possibility of cyropreservation

...n body could be cyropreserved without formation of damaging ice crystals, according to University of Helsinki researcher Anatoli Bogdan, Ph.D. He conducted the study, scheduled for the July 6 issue of the ACS Journal of Physical Chemistry B , one of 34 peer-review journals published by the American Chemical...

The molecular mechanism of a diabetes vaccine revealed

...ase. This double action of the peptide weakens the damaging activities of the immune response further. The scientists also showed that in order to activate this response, p277 must be bound to the receptor TLR-2, which is found on the cell walls of the regulatory T cells. "These findings are important, as it...

Scientists stop autoimmune disease without shutting off immune system

...to the skin cells. Instead, it prevented them from damaging the skin as they normally do. The drug stopped a series of cell-signaling events that lead to the loss of adhesion or "stickiness" between skin cells. Thus, it stops the disease without affecting the immune system. "There are a number of companies ...

Healthy coral reefs of Madagascar resisting damage from climate change

...agascar's northeast coast have so far resisted the damaging effects of warmer ocean temperatures attributed to global climate change, say scientists who recently studied the region. The survey of a previously unexplored region in March 2006 by scientists from Conservation International and its partners docum...

Honey helps problem wounds

..., since the poultices are easier to remove without damaging the newly formed layers of skin.' Some wounds often smell unpleasant ?an enormous strain on the patient. Yet honey helps here too by reducing the smell. 'Even wounds which consistently refused to heal for years can, in our experience, be brought unde...

New crop of technology reveals plant health

...crop management more economic too, as well as less damaging to the environment." "The system picks up on the plants' signals that indicate when plants need help, such as more water, more nutrients or more or less light. Essentially, the plants are controlling the system," she continues. The system uses an i...

Enzyme crystal structure reveals 'unexpected' genome repair functions

...isplatin and radiation therapy work by essentially damaging DNA, any new understanding of the DNA repair mechanism could mean potential improvements in the treatment of cancer," Tainer says. Prior to this study, there were no specific models for how XPB acts in DNA separation either to initiate transcription...

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