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Tag: "damages" at biology news

Mechanism identified for promising neurological drug

... inflammation is basically a bad thing, because it damages cells," Swanson notes. "And cell suicide is not necessarily the best thing for the whole organism." Is he being understated? The second observation, Swanson says, was made a decade ago by study co-author Tiina M. Kauppinen, PhD, currently a neurolog...

Bird brains shrink from exposure to contaminants

...first proof that natural exposure to a contaminant damages the brain of a wild animal. "These residues have been persisting since the late 1960s--that's what is really disturbing," said Dr. Andrew Iwaniuk, a post-doctoral research fellow in the U of A's Department of Psychology. "It has been years since i...

UCI scientists find chlorine may contribute to ozone formation

.... Ozone is a highly reactive and unstable gas that damages living cells. Even low levels of ozone can harm the upper respiratory tract and the lungs, causing a cough, throat irritation and reduced lung function, and aggravating the effects of asthma, bronchitis and emphysema. Said Saltzman, "Understanding t...

Whiplash injuries ?are they caused by startle reflexes?

...dden acceleration of the body relative to the head damages the joints and muscles of the neck, which can lead to long-lasting pain. Jean-Sébastien Blouin and colleagues at The University of British Columbia, collaborating with MEA Forensic Engineers & Scientists, exposed subjects to rear-end collisions ...

Hair samples show babies can be exposed to 'crystal meth' while in the womb

...and enhances sexual arousal. But long term abuse damages nerves in the brain and can lead to psychotic behaviour and aggression. The drug is very easy to manufacture in home laboratories, and global use has soared, particularly among young women, say the authors. An estimated half a million Americans a...

Researchers identify new weapon to fight deadly bacterial sepsis

...s by which LPS triggers an inflammatory cycle that damages the cells of the heart. By blocking aldose reductase activity with pharmacological inhibitors or using small interfering RNAs (pieces of genetic material that specifically stop the production of particular cellular proteins) to prevent the cells from...

Brain works more chaotically than previously thought

...nce. "In these concentrations the neurotransmitter damages the insulating cells," says Dietrich. "It's the dosage that makes it harmful." ...

Non-GMO solution to seafood allergies

...746). Zhenxing’s team suggests that irradiation damages the proteins, revealing hidden reactive amino acid residues. Subsequent heating then destroys the exposed residues. "Radiation and heat seems to be a promising method for reducing the immunoreactivity" say the researchers. Samuel Lehrer of Tulane ...

Scientists identify specific enzymes that make meningitis hard to fight

...subject them to oxidative stress. Oxidative stress damages the base chemical compounds of the bacteria's DNA. This should lead to cell death and the defeat of the bacteria. However, the virulent meningitis bacteria are able to repair this harmful damage and are therefore unaffected by the body's defences. ...

Inhibiting blood to save the brain

...brain called microglia, causing inflammation which damages myelin. The scientists sought to design a therapeutic strategy that would block the damaging effects of fibrinogen without affecting its beneficial blood coagulation. Studying a mouse model, the researchers identified a specific receptor called M...

Wheat can fatally starve insect predators

... then ingest the lectin. This interaction probably damages the larvae's chitin-rich mid-gut lining so that it can't absorb nutrients from the plant, causing the insects starve, Williams said. Some Hessian fly larvae, which are called virulent, are capable of ridding their bodies of lectin and surviving. A...

Scientists use nanoparticle to discover disease-causing proteins

...e to study extracted proteins in laboratory dishes damages the sample and the natural environment is destroyed." The dendrimers would carry one of the stable isotopic or fluorescent labels to identify the presence or absence of a protein that can be further developed for use as a disease indicator, or bio...

Cold sore virus might play role in Alzheimer's disease

... the body's immune response against herpes somehow damages the brain, and that such damage is worse in people with the ApoE-4 copy of the gene. Earlier this year Federoff's team published a study that showed inflammation is the earliest change that could be detected in a brain affected by Alzheimer's disease...

UCLA study uncovers clues for why Graves' disease attacks the eyes

...eepen understanding of how the autoimmune disorder damages the body and offer a new target for treating the disfiguring disease. Earlier research found that GD patients?immune systems produce an antibody that other people do not. Not recognizing the patient’s thyroid as "self," the antibody mistakenly...

Research says boiling broccoli ruins its anti-cancer properties

...itish cooking habit of boiling vegetables severely damages the anticancer properties of many Brassica vegetables such as broccoli, Brussel sprouts, cauliflower and green cabbage. Past studies have shown that consumption of Brassica vegetables decreases the risk of cancer. This is because of the high concent...

Parasites' impact goes beyond host to affect ecosystem

...and the flatworm C. lingua infects L. littorea and damages its digestive system, then perhaps C. lingua infection could alter the abundance of this ephemeral macroalgae. The Shoals Marine Laboratory, located seven miles off the coast of Portsmouth on Appledore Island and operated jointly by UNH and Cornel...

How the brain's backup system compensates for stroke

...unction. Researchers had known that after a stroke damages one side of the brain and paralyzes a limb, the PMd in the intact hemisphere increases in activity. However, they did not know whether this activity increase represented specific "rescue" of PMd function in the damaged hemisphere. In their experim...

Common treatment for methamphetamine overdose may damage brain cells

... emergency rooms to treat methamphetamine overdose damages nerve cells in an area of the brain known to regulate movement, a new study shows. The findings, derived from experiments with rats, indicate that only the combination of the medication, haloperidol, and methamphetamine causes the destructive effect...

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