attack 2 5

Tag: "attack" at biology news

Techniques available to detect soil that inhibits destructive soybean pest

...hatch into juveniles and leave the cyst to further attack the plant roots. Swollen females can be seen with ...ll. Subsequently, plants may be more vulnerable to attack by other stresses, such as insects, diseases and drought. It's often impossible to see symptoms of ...

Purdue researchers find key to rice blast fungus

...t fungus, is the most deadly of the pathogens that attack rice, reducing yields by as much as 75 percent in infected areas. Learning how the fungus tricks rice's natural defenses against pathogens to penetrate the plant is an important part of controlling the disease, said Jin-Rong Xu, a Purdue molecular bi...

'License to kill' enables powerful immune attack cells in mice

...to them as natural killer cells. The cells rapidly attack invaders and are continually generated in the bone...ir surfaces. The natural killer cells' ability to attack is inhibited when these receptors encounter a molecule known as major hiscompatibility complex (MHC)...

Bone marrow stem cells may heal hearts even years after heart attacks

...em cells could help to not only reverse some heart attack damage, reduce symptoms and improve the daily func...of heart failure, Dr. Strauer said. Current heart attack interventions attempt to restore blood flow to the heart muscle as soon as possible, in order to lim...

Kenya halts first field trials of GM maize

...a restricted pesticide on maize modified to resist attack by insects called stem borers. Wilson Songa, Kenya's agriculture secretary and chair of the National Biosafety Committee, said this could compromise the validity of the trial's results. On 25 August, the committee ordered the Kenya Plant Health Ins...

Plant wounds trigger bacteria

...om plants or animals, and respond by initiating an attack on these host organisms," Winans said. "For example, others have shown that the bacteria that cause cholera express protein toxins only when they detect bile salts in the host's intestine. It will be interesting to see whether those bacteria also inc...

Researchers Find Drug May Give Some Cardiac Protection 24 Hours After Heart Attack

... Koch had given EPO at the time of simulated heart attack in an another animal model, and found it protected the animals. But in further studies, Dr. Koch gave Darbepoietin to animals at the time of ischemia and heart attack, one to two hours after, and 24 hours later. In each case, the scientists saw that...

Anti-cancer drugs may hold promise for premature aging disorder

...se also ensues, typically causing death from heart attack or stroke at about the age of 12. "Our findings show that FTIs, originally developed for cancer, are capable of reversing the dramatic nuclear structure abnormalities that are the hallmark of cells from children with progeria. This is a stunning sur...

Polymer gel can block toxic leakage problem in gene therapy

...tumor cell death or stimulate the immune system to attack the cancer. Yuan said he and other Duke researchers have found that, because of the small size of pores in blood vessel walls and other access points, these adenoviruses cannot reach the majority of tumor cells by being injected into the blood strea...

Plants have a double line of defence

...nly a few of these pathogens, however, are able to attack a species of plant and "make it sick". If a particular pathogen is unable to attack a plant, that means that the plant is resistant to it ?in other words, it cannot host the pathogen. ...

Genetic defenders protect crops from fungal disease

...lants with species of powdery mildew that normally attack peas or barley, revealing much about how plants use genes to fight infection. "Most plants are resistant to the majority of pathogens they encounter, but the basis for this resistance was unknown," Somerville said. "Identifying these genes has provi...

New study examines how sense of smell affects mating and aggression in mice

...niffing the test wild-type males, and they did not attack the wild-type males, Shah notes. "This suggests a broad and essential role for the MOE in regulating mating and aggression." More research is needed to understand the role of the olfactory system and human behavior, but clearly this is an important ...

Plant defenses prompt bacterial countermeasure in the form of 'island' DNA excision

...s ?plants have developed systems for resisting the attack of microbial pathogens, while these microbes thems... have depended on their ability to alter molecular attack strategies in order to flourish. In the new work, researchers have essentially caught one step of th...

Compound from marine bacteria shows potential as multiple myeloma therapy

...nt to bortezomib. Because NPI-0052 and bortezomib attack the same intracellular target in different ways, the Dana-Farber researchers contend that combining these two agents might be more effective than using either therapy alone ?and be better tolerated by patients as well. In preclinical studies, NPI-0...

Federal grant funds research on novel HIV therapy

...ect will determine whether the antagonist may also attack HIV infection in patients. The grant also includes a private sector collaborator, Seracare Bioservices, Inc., of Gaithersburg, Md., for whom the principal investigator is Janet L. Lathey, Ph.D. This core laboratory will test candidate NK-1R drugs in...

Discovering the first steps in transcription-coupled repair

...ir: keeping up with life DNA is constantly under attack from sources inside and outside the body, including sunlight, ionizing radiation, other environmental carcinogens, and free radicals from the cellular metabolism. DNA damage ranges from one or a few altered nucleotides in a single strand of the doubl...

The bioweapon is in the post

...order all the genes necessary to launch a smallpox attack would probably arouse suspicion. "That would stand out from a technological point ofview," suggests Drew Endy, a bioengineer at the Massachusetts Institute of Technology. A more realistic risk is that terrorists could order genes thatfconfer virulen...

Feds give researchers ok for safety test of adult stem cells in patients with heart disease

...onally, physicians have been able to prevent heart attack or alleviate its after-effects, but they have not figured out how to initiate the sort of blood vessel repair that remains a key to survival," says Dr. Laughlin. "Now there is a promise of achieving that repair by infusing highly selected marrow stem...

Technique offers new view of dynamic biological landscape

...se genes from acting together to compensate for an attack on just one protein, said Weissman. The researchers, led by Weissman, Maya Schuldiner, a post-doctoral fellow working in his lab, and Nevan Krogan at the University of Toronto, described initial studies of E-MAP in yeast in the November 4, 2005, is...

Scientists show how thinking can harm brain cells

...l Center have targeted a new culprit and method of attack on neurologic functions in diseases such as Alzheimer's and dementia associated with HIV. In an article in the Nov. 1 issue of The Journal of Clinical Investigation, the Rochester scientists describe a new mechanism by which brain cells can be damag...

1 2 3 4 5 6 7 8 9 10