harmful 2 2

Tag: "harmful" at biology news

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...organisms. But some phytoplankton species produce harmful blooms, known as red or brown tides, which release... oxygen in the water. Scientists suspect that many harmful blooms are artificially fueled by fertilizer runoff from farms, which dump tons of excess nitrogen i...

Symbiotic bacteria protect hunting wasps from fungal infestation

... resistance in our own species's efforts to combat harmful microbes. ### Martin Kaltenpoth, Wolfgang Göttler, Gudrun Herzner, and Erhard Strohm: "Symbiotic Bacteria Protect Wasp Larvae from Fungal Infestation" The other members of the research team include Martin Kaltenpoth, Wolfgang Göttler, Gudrun Herzn...

New strategies to reduce hospital-aquired infections

...s. Further complicating the problem, some of these harmful pathogens are also protected by amoeba that are resistant to chlorination, temperature and osmotic pressure. The amoeba acts as a "Trojan Horse" harboring and transporting the microbes. Amoebas with waterborne resistant microorganisms have been recov...

Distributed Basic Local Alignment Search Toolkit (W.ND-BLAST)

...s. Further complicating the problem, some of these harmful pathogens are also protected by amoeba that are resistant to chlorination, temperature and osmotic pressure. The amoeba acts as a "Trojan Horse" harboring and transporting the microbes. Amoebas with waterborne resistant microorganisms have been recov...

Bee mites suppress bee immunity, open door for viruses and bacteria

...of one bee. Other researchers have shown that both harmful and harmless bacteria may infect the feeding locat...Something else is involved that makes bee mites so harmful to bee colonies. The Penn State researchers report their findings in today's (May 17) online versio...

Research shows smoking adds a decade to reproductive age of IVF patients

...rweight also seriously damages their chances. The harmful effects of smoking or being overweight were strongest among those women who had no obvious cause for not conceiving, according to the research, published today (Thursday 7 April) in Europe's leading reproductive medicine journal Human Reproduction[1]...

While on trail of dioxin, scientists pinpoint cancer target of green tea

...asiewicz, Ph.D., whose decades-long studies of the harmful effects of dioxin ultimately led his group to expl...oxin, and it was by tracking the trail of dioxin's harmful effects on the body that his group made the green tea findings. His group has shown how dioxin and o...

Mutation in clams protects against paralytic shellfish poisoning but raises human health risk

...itored the shellfish for mortality and potentially harmful changes in burrowing behavior. They found that clams that came from areas with a history of red tides had less sensitivity to the toxins than did clams from an area with no such history. They showed that nerves taken from the two clam populations als...

A probe, not an echo

...e they are ultrasonic, they do not use potentially harmful ionizing radiation. *The system requires a minimum of special pre-scan procedures and appears likely, in clinical use, to be more comfortable for patients than alternatives. "The HUTT imaging system is a novel and potentially very useful approach t...

Atmosphere may cleanse itself better than previously thought

...break down smog and other pollutants into far less harmful components. While many such chemicals have long been known to behave in this way ?producing natural air cleaners called OH radicals ?the chemicals the team studied have for the first time been observed to produce air-scrubbing OH radicals at low ult...

Disabling gene defuses rheumatoid arthritis in mice

...is is also the result of a less specific but still harmful inflammation generated by cells from the other branch of the immune system, the innate immune system." Innate immune cells such as neutrophils respond rapidly to invaders and normally comprise the body's frontline defenses against bacterial infectio...

Active Vaccine Prevents Mice From Developing Prion Disease

...ainly in the digestive tract," he explains. "Thus, harmful prions in contaminated food will be destroyed in the gut and will not reach other organs in the body." Because the research was conducted in normal mice, the NYU researchers say it will be easier to apply in animals in the wild, which are at risk for...

Genome study of beneficial microbe may help boost plant health

...rally safeguards roots and seeds from infection by harmful microbes that cause plant diseases. The genome paper will be published in Nature Biotechnology and was scheduled to be posted online on June 26. "The genome sequence has helped us identify new chemical pathways that the microbe apparently uses to cr...

Immune system's distress signal tells bacteria when to strike back

...s rather than trying to kill all the germs." Many harmful bacteria have already learned how to resist the drugs developed to treat them. Scientists are now looking at alternatives, such as ways to block or scramble the chemical messages that allow microbes to eavesdrop on their hosts or to conspire together...

Morphine for Chest Pain Increases Death Risk

...rse. "Morphine has the well-known and potentially harmful side effects of depressing respiration, reducing blood pressure and slowing heart rate," he continued. "These side effects could explain the worse outcomes in patients whose heart function has already been compromised by disease." For their analysis...

Scientists reveal how disease bacterium survives inside immune system cell

...human. Typically, neutrophils ingest and then kill harmful bacteria by producing molecules that are toxic to cells, including a bleach-like substance called hypochlorous acid. Once the bacteria are killed, the involved neutrophils self-destruct in a process known as apoptosis. Recent evidence suggests that t...

Evolution of taste receptor may have shaped human sensitivity to toxic compounds

...ses of taste and smell, for protection against the harmful compounds found in nature. It is widely believed t...g our present sensitivities and protecting us from harmful natural chemicals. The research team analyzed the nucleotide sequence of a human gene encoding a bit...

New insight into autoimmune disease: Bacterial infections promote recognition of self-glycolipids

...the ability to distinguish "self" from potentially harmful invaders. This can lead to autoimmune disease characterized by destruction of healthy tissues. Although it is not clear exactly what causes the immune system to go awry, there is increasing evidence that in some cases infections with viruses or bacte...

Human embryonic stem cells have the potential to develop into eggs and sperm in the laboratory

...anding the causes of infertility and the potential harmful effects of environmental chemicals on reproductive development," he will say. "But at present it is very difficult to obtain human samples of these cells as they only occur early in development." Mr Aflatoonian, who is a PhD student in Professor Har...

NIH renews network focused on how genes influence drug responses

...ts (arrhythmias) are beneficial to some people and harmful to others. (Dan M. Roden, M.D., Vanderbilt University) The Amish Pharmacogenomics of Antiplatelet Intervention Study --$7.5 million provided by NIGMS to characterize the genetic basis for why people respond differently to medicines, including ...

1 2 3 4 5 6 7 8 9 10