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Tag: "halt" at biology news

One bacteria stops another on contact

...may eventually lead to new antimicrobial agents to halt bacterial growth which would be an entirely new system to shut bacteria down, according to the scientists. "This has potential implications for new antibiotics," said Low. "If bacteria can do this, then maybe we can do it." Doctoral student and firs...

Stem cells bring fast direct improvement, without differentiation, in acute renal failure

... MSC paracrine effects prompt a positive cascade, halt inflammatory response Rather, the Utah team found that "administered stem cells don't stay in the kidney that has ARF long enough to differentiate into kidney cells, but rather appear to alter the course of ARF by a number of identifiable and some s...

UCLA scientists reveal how Nipah virus infects cells

...ng the cells. This will help prevent infection and halt outbreaks before they reach epidemic proportions." Since 1998, the Nipah virus has triggered disease outbreaks in Australia, Singapore, Malaysia and Bangladesh. Animals spread the virus to people, where it causes life-threatening respiratory and neu...

Scientists discover genetic pathway responsible for breast cancer cell growth

...estrogen and one in particular that can be used to halt the growth of breast cancer cells. The study, publ...ck the growth-inducing effect of estogen, and thus halt the growth of breast cancer cells," says Dr. Giguère. In FOXA1 researchers have found a new target t...

DDT-resistant insects have additional genetic advantage that helps resistance spread

... certain antibiotics from being prescribed may not halt the spread of antibiotic resistance in bacteria. "We found that DDT resistance in fruit flies not only carries no cost but in fact confers an advantage when inherited through the female," said Richard ffrench-Constant (correct), from the University ...

Purdue researchers find key to rice blast fungus

Efforts to halt a fungus that deprives about 60 million people a year of food have led Purdue University scientists to discover the molecular machinery that enables the pathogen to blast its way into rice plants. The fungus, Magnaporthe grisea, which is known as ri...

Emerald Spectre haunts Ontario's ash forests

...n to stop the borer's spread have so far failed to halt its outward march. At risk are nine billion ash trees in the United States and Ontario, with an estimated value of more than $300 billion in the United States alone. "Its distribution continued to spread during 2005 in the Great Lakes region despite...

Shorter colds, milder flu may follow from newly revealed immune mechanism

...o ultimately clear the viral debris and so finally halt the infection. Balancing these cell death and survival pathways can determine whether the virus or the host wins the battle." Next, the researchers will look further at precisely how CCL5 prevents cell death. "In this initial study, we identified t...

'Computer-chemistry' yields new insight into a puzzle of cell division

...yme, preventing its docking with the kinase, could halt cell over proliferation to treat such cancers. However, developing such drugs has been hampered by lack of detailed understanding of how the Cdc25s fit with their associated kinases. "To me this is the culmination of my six years here at Duke," sai...

Pain killer fights breast cancer by targeting key enzyme

A pain–killing medication appears to halt the production of an enzyme that is key to a commo...e, the problem is that the current inhibitor drugs halt estrogen production throughout the body, said Robert Brueggemeier, a study co-author and a professor...

Satellites show Amazon parks, indigenous reserves stop forest clearing

..., that rainforest parks and indigenous territories halt deforestation and forest fires. According to Nepstad, "Protecting indigenous and traditional peoples' lands and natural areas in the Amazon works to stop deforestation. The idea that many parks in the tropics only exist 'on paper' must be re-ex...

Genetic study shows humans have pushed orangutans to the brink of extinction

... are taken to reconnect remnant forest patches and halt further deforestation." ...

Scientists design potent anthrax toxin inhibitor

...n inhibitor might act synergistically to lessen or halt anthrax symptoms, notes Dr. Kane. Using the same technique of placing multiple peptides on a liposome, the researchers also created a polyvalent inhibitor of cholera toxin that functioned well in test-tube experiments. In the next phase of their re...

Medical experts: US unlikely to have enough vaccines to stop avian flu

... nation would have enough antiviral medications to halt a pandemic. "The medical experts' estimates suggest this is a bigger risk than anything else we are facing," said Baruch Fischhoff, a study co-author and the Howard Heinz University Professor of Social and Decision Sciences and Engineering and Publ...

International HIV/AIDS trial finds continuous antiretroviral therapy superior to episodic therapy

... outcome of the study. NIAID made the decision to halt enrollment in collaboration with the study's Executive Committee and following a recommendation received from an independent Data and Safety Monitoring Board (DSMB). The DSMB, charged with regularly evaluating data and safety issues during the multi-...

Scientists discover a genetic switch that links animal growth and cancer

...lopment into a mature tree. Many animals similarly halt their development until the environment is right for growth and development." The process is the same with cells, the basic units of life. Many cells remain in a quiescent state, neither growing nor multiplying until they are triggered to do so by a...

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

...r a long life with fewer progeny and a tendency to halt larval development and enter a dormant, hibernation-like stage in which they can hang on for months but don't reproduce. Unless Smk-1 is missing, that is. Without Smk-1 to provide guiding assistance, DAF-16 is unable to slow down the aging process...

Loosen leash on cancer protein 'watchdog,' researchers say

...oteins found naturally in cells has the ability to halt the progression of intestinal tumors that arise from genetic predisposition. When the activity of this protein, known only by the technical name of p53, was artificially increased in the cells of laboratory mice, those known to have a hereditary pred...

Aging cells, aging body: Fresh evidence for a connection

...some caps called telomeres have dwindled enough to halt cell division. Scientists painstakingly counted the cells with aging biomarkers. What they found: The number of senescent cells increased exponentially with age. TIF-positive cells made up about 4 percent of the connective tissue cell population in ...

Engineered heart tissue offers insights into irregular heartbeats, defibrillator failure

... occur in ventricular tachycardia and attempted to halt it with pace-setting pulses. "In the beginning, there is a single rotating wave -- the 'culture dish' analog of ventricular tachycardia," Bursac said. "After a short period, we applied trains of pulses in an attempt to terminate this wave." The pu...

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