Tag: "evade" at biology news

New biosensor rapidly detects deadly foodborne pathogen

...if a product has a level of Listeria low enough to evade detection when it's tested at the processor, that Listeria still can grow in the home refrigerator to a level that makes it infective to people at risk." While Bhunia said there's no known precise number of cells it takes to infect ...

Low dose radiation evades cancer cells' protective 'radar'

...tle this "radar" sensor allowing more radiation to evade detection and destroy even greater numbers of cancer cells. Researchers at the Johns Hopkins Kimmel Cancer Center tested the low-dose radiation strategy on cultured prostate and colon cancer cell lines and found that it killed up to twice as many cel...

Botulism bug says no to nitric oxide, provides key to molecule's role in human cell signaling

...e protein that the botulism bug uses to detect and evade NO," Raman said. "What we have ultimately shown is how this protein evolved from being part of a protective mechanism into a system that learned to use the toxin to benefit the organism." In human beings, nitric oxide binds to a receptor called so...

By impounding iron, FHC foils cell suicide, fuels inflammation

...chronic inflammation begins when these lymphocytes evade cell death after winning the battle. In diseases like Crohn's or arthritis they can turn their weaponry on healthy cells, which they misidentify as invaders, causing lasting disease and tissue damage. A similar process, when dysfunctional cells fai...

National survey shows Americans are in the dark regarding genetically modified foods

...any people say they are interested in continues to evade public attention. Given that people know very little about GM foods, and most Americans seem to be willing to believe the worst about them, how will they feel when they realize that they've been eating them for years?"...

'Blips' in HIV treatment are not cause for alarm

...proliferating virus evolves molecular changes that evade the suppressive effects of the drugs. "So, when a clinician suddenly sees a measurement of one hundred and twenty (copies), the clinician and the patient tend to get extremely upset about it," he said. "But then typically, a repeat measurement would ...

Coastal dead zones may lead to ecosystem-based fisheries management

... layers. Crowder described how fish and shrimp can evade death simply by relocating to the zone's edge. "Basically, it's the same as the way forest wildlife might aggregate on the edge of a forest fire," Crowder said in an interview. And shrimpers and fishermen exploit that knowledge by positioning their n...

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

...eins that may help mediate the amoeba's ability to evade the human immune system. This could explain why the parasite can stay hidden in the body for years at a time. Such information may help researchers find better means to harness the immune system to eradicate infection through vaccine development. ...

Master gene controls healing of 'skin' in fruit flies and mammals

...en the wound is healed. In addition, cancer cells evade this "stop" program, but how they do it is not well understood....

A kiss that binds

...e, what this function actually is has continued to evade researchers. FMRP is a protein characterized by the presence of three RNA binding domains: two tandem KH-type RNA binding domains and an RGG box. Scientists have focused on the identification of FMRP RNA ligands in an effort to understand FMRP func...

Molecular spies illuminate drug resistance proteins

...iotics and chemotherapy drugs that will be able to evade these transporters. The first step in designing drugs that can defy these proteins is determining the structure and function of these transporters. The basic structure of MsbA had previously been determined through crystal structure analysis, which...

Size matters: fish genitalia attractiveness vs. predatory escape value

...pacity to attract mates and the ability to quickly evade predators, according to a report in Proceedings of the National Academy of Sciences. Variation in the size of male genitalia in animals that have internal fertilization has long been of interest. While competitive advantages of sperm robustness and o...

Cigarette smoke exacerbates alcohol's effects on defense against Streptococcus pneumoniae

...virulent strain of S. pneumoniae that is able to evade the action of the cilia and travel from the nasopharynx into the lungs." Gentry-Nielsen said that alcoholics are more susceptible to S. pneumoniae infections for several reasons. "They have a decreased gag reflex and an increased risk of movement ...

PNAS highlights for the week of May 16 - 20

...pacity to attract mates and the ability to quickly evade predators, researchers report. Diversity of male genitalia size in animals with internal fertilization has intrigued scientists. Most evolutionary explanations have centered on postmating sexual selection, such as sperm competition advantages. The r...

Human cells can 'silence' HIV genes

...y to battle HIV using RNAi, does HIV have a way to evade the defensive maneuver? The answer to all three q...y mutating its genes. However, the virus could not evade the newly discovered sequence-specific siRNA attack by mutation. Instead, HIV required a virally enc...

Edible bivalves as a source of human pathogens: signals between vibrios and the bivalve host.

...system in the light of the capacity of bacteria to evade the hemolymph bactericidal activity and to develop pathogenic effects in the bivalve host." The authors describe their data obtained with an in vitro model of Vibrio cholerae challenged against the immune system of Mytilus galloprovincialis, chosen a...

Virus uses tiny RNA to evade the immune system

...ith a recently discovered gene silencing device to evade detection and destruction by immune cells. The rep... Our study shows that a virus can also adapt it to evade the immune response," said HHMI investigator Don Ganem, who is at University of California, San Fran...

Scientists streamline method for making key virus

... skin cells, where it uses a "stealth strategy" to evade the immune system. It hides, initially, in undifferentiated skin cells, the only type of cell that can be infected by the virus. When the undifferentiated cells begin to develop into mature skin cells, the virus switches gears, acquires a protein coa...

42 biomedical scientists worldwide named HHMI international research scholars

...ariation in Giardia, which enables the parasite to evade its host's immune responses. Vilma Regina Martins Researcher Ludwig Institute for Cancer Research Sao Paulo, Brazil Vilma Martins is studying the physiological mechanisms underlying cellular...

JCI table of contents August 1, 2005

...ew functions in mediating immunity HIV is able to evade the host immune system to cause infection. In particular, HIV downregulates CD4+ immune T cell function, which might aid infection, but the mechanisms underlying this phenomenon are unknown. In a study appearing online on July 7 in advance of print...

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(Date:10/28/2014)... Health (NIH) announced awards to expand the Office ... Center for Advancing Translational Sciences (ORDR-NCATS) collaborative Rare ... network, physician scientists at 22 consortia will work ... research and investigate new treatments for patients with ... $29 million in fiscal 2014 funding from NIH. ...
(Date:10/28/2014)... in a novel environment are linked to individual ... experimental study completed at the University of Eastern ... Institute. The study used novel, long-term observations of ... to analyse if behaviours predict the vulnerability to ... enriched hatchery rearing environments. Based on the ...
(Date:10/28/2014)... associated with a lower risk of developing ovarian cancer, ... Anglia (UEA). , Research published today reveals that ... subclasses of dietary flavonoids) significantly decrease their risk of ... death among women. , The research team studied ... and 55 for more than three decades. , ...
Breaking Biology News(10 mins):NIH's ORDR-NCATS RDCRN & NICHD awards U54 cooperative agreement for natural history study 2NIH's ORDR-NCATS RDCRN & NICHD awards U54 cooperative agreement for natural history study 3Fish 'personality' linked to vulnerability to angling 2Tea and citrus products could lower ovarian cancer risk, new UEA research finds 2
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