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Tag: "harmful" at biology news

Bringing the zoos to the zebras

...ere relegated to suboptimal habitat, a potentially harmful situation for female zebras attempting to regain body condition after weaning their young. "Clearly the community took this message on board because when we returned a year later they had changed their behavior and allowed Grevy's zebras to walk wi...

New nano-canary in the nanotoxicology coalmine: The body itself

...ublic that we need to know more about the possible harmful or adverse effects of nanoparticles on human health. Likewise, most agree that these incredibly small materials can behave quite differently from conventional materials. Nonetheless, neighborhood stores feature products that promise benefits from ...

UCSD biologists find new evidence for one-way evolution

...ollen, thereby avoiding self-fertilization and the harmful effects of inbreeding. This ability is sometimes lost, as is the case for garden tomatoes, which can set seed by self-fertilization. Apparently, once lost, the ability to reject pollen in order to prevent self-fertilization is never regained. Irre...

Spousal illness can trigger partner death

... a spouse falls ill or dies, partners may increase harmful behavior, such as drinking. Stress and lack of soc... found that certain illnesses in a spouse are more harmful to partners than others. The more a disease interferes with a spouse's physical or mental ability, a...

New cellular flaw found in some virulent breast cancers

... cancers, demonstrating that blocking CDK4 was not harmful to the mice. That research was carried out by scientists at Tufts-New England Medical Center, Harvard Medical School, and Massachusetts Eye and Ear Infirmary, together with Sicinski. The identification of the cyclin D1-CDK4 kinase pathway is impo...

New compound protects against liver cancer

...stimulate the cell's defense mechanisms and remove harmful chemicals from cells. "Activation of the Nrf2 pathway with CDDO-Im could provide protection against a number of diseases triggered by environmental agents," said Thomas Kensler, PhD, a professor with the Bloomberg School's Department of Environmental...

Sea coral's trick helps scientists tag proteins

... be activated by visible blue light, which is less harmful to living cells and does not require special laser equipment, Konstantin Lukyanov explained. In fact, the light source of the laser-scanning confocal microscopes that researchers commonly use to peer into living cells can activate the tag, which shou...

Less antibiotic use in food animals leads to less drug resistance in people, study shows

... to be steps in the right direction toward curbing harmful foodborne bacterial drug resistance. ...

Wound monitor 'sniffs out' infections

...?.67m) to develop a new device able to 'sniff out' harmful infections. The funding will be used to create a ...aim is to produce a device which is able to detect harmful bacteria in the air, which may signal the first signs of infection. When bacteria metabolises inside...

Therapeutic prospects beyond Vioxx

...fat called prostacyclin, while leaving unaltered a harmful one called thromboxane. This led him to predict that drugs in this class might confer a cardiovascular risk before either reached the US market. In the present studies, the investigators used multiple genetically manipulated mice ?including mice th...

Research updates 65-year-old genetic discovery

...ir environments by avoiding toxic plants and other harmful compounds. Research conducted more 65 years ago by a team of scientists led by Sir Ronald Aylmer Fisher, the eminent British statistician and geneticist, concluded that this gene variant was the same in humans and chimpanzees and existed throughout ...

MIT research holds promise for Huntington's treatment

...that the largest inclusions may not necessarily be harmful and could in fact be protective, said Bodner. So, the MIT and Harvard scientists decided to look for compounds that actually promote the formation of large inclusions. The highest concentration of protein inclusions was found when the researchers ap...

Study: Paramedics save more lives when they don't follow the rules

...g chest compressions for ventilations was far more harmful than helpful. Excessive ventilations during chest compression turned out to be harmful, too." First responders applying the new protocol were able to resuscitate the majority (58 percent) of out-of-hospital witnessed cardiac arrest victims, provided...

For the first time: Longevity modulated without disrupting life-sustaining function

...slow aging and improve the quality of life without harmful consequences to the body. In humans and other mammals this signaling cascade is known as the insulin/IGF-1 pathway since it is prompted by insulin and the closely related insulin-like growth factor-1 or IGF-1. IGF-1 is the main trigger for childhoo...

How nice, brown rice: Study shows rice bran lowers blood pressure in rats

... diabetes), lipid profile, kidney function and the harmful effects of free radicals. For example, high levels of a marker called 8-OHdG indicate biological stress and genetic damage due to oxygen-based free radicals. The researchers found that rice bran, which contains various forms of the antioxidant Vitam...

Mystery solved: Gold's power against autoimmune diseases defined

...mune response. Usually this response is limited to harmful bacteria and viruses, but sometimes this process goes awry and the immune system turns towards the body itself causing autoimmune diseases such as Juvenile diabetes, Lupus, and rheumatoid arthritis. During their search through thousands of compounds...

Ocean acidification threatens cold-water coral ecosystems

...ebs, so a reduction in their numbers could lead to harmful effects throughout marine ecosystems." Only a decrease in the burning of fossil fuels is likely to slow this trend, say Guinotte and colleagues. ...

New device could cut chemotherapy deaths

... fibres more sterile so they cannot be attacked by harmful bacteria. Dr Perera said that other researchers had worked on using tiny beads as a way of delivering drugs locally, but the new system showed greater promise because it could achieve better control when delivering the drug. A patent application ha...

Bacteria beat the heat

...ediate conditions. This may protect the cells from harmful swings in enzyme activity. We can envision using this knowledge, for instance, to facilitate enzymatic reactions in different applications, enhance crop production in areas subject to extreme temperature changes or create new resources for biofuel pr...

Chemical in many air fresheners may reduce lung function

..., mothballs and other deodorizing products, may be harmful to the lungs. Human population studies at the National Institute of Environmental Health Sciences (NIEHS), a part of the National Institutes of Health, found that exposure to a volatile organic compound (VOC), called 1,4 dichlorobenzene (1,4 DCB) may...

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