resistance 2 1

Tag: "resistance" at biology news

Enzyme, lost in most mammals, is shown to protect against UV-induced skin cancer

...ing the 6-4PPphotolyase transgene, showed superior resistance to the deleteriouseffects of UV irradiation. Not o...nburn in normalmice, but they also showed superior resistance to UV-induced skincancer. This work clearly points to CPD lesions as the majorintermediate in UV-ind...

Poor prenatal nutrition permanently damages function of insulin-producing cells in the pancreas

... make enough insulin or the body's cells develop a resistance to its effect. Without insulin, glucose cannot get...ng exercise and weight control to minimize insulin resistance -- the other major factor involved in triggering type 2 diabetes. "In particular, someone who was a...

Combination therapy boosts effectiveness of telomere-directed cancer cell death

...n extendedtreatment duration that can lead to drug resistance and other problems.Dr. Hiroyuki Seimiya from the Japanese Foundation for Cancer Researchin Tokyo and colleagues examined what happens to cancer cells whentelomerase inhibition is combined with inhibition of an enzyme calledtankyrase 1 that is involve...

GATA: a graphic alignment tool for comparative sequence analysis

...n extendedtreatment duration that can lead to drug resistance and other problems.Dr. Hiroyuki Seimiya from the Japanese Foundation for Cancer Researchin Tokyo and colleagues examined what happens to cancer cells whentelomerase inhibition is combined with inhibition of an enzyme calledtankyrase 1 that is involve...

Learning to fight an adversary that won't stay down

...mposium on the evolutionary genetics of antibiotic resistance at the 2005 meeting of the American Association fo...nd study the many genes responsible for antibiotic resistance in hospitals and the environment. "What has been found is that there are more antibiotic resistance...

Scientists find missing enzyme for tuberculosis iron scavenging pathway

...believed to be involved in tuberculosis antibiotic resistance is actually a "missing enzyme" from the biosynthet...ets and a better understanding of the mechanism of resistance in this bacterium. Several spans of DNA in the M. tuberculosis genome have been annotated as antibi...

Spider Venom Could Yield Eco-Friendly Insecticides

...er-venom cocktails could be designed to thwart the resistance of specific insect pests by locking on to novel mo...ave like spider toxins, they will most likely lack resistance to bioinsecticides derived from funnel-web venom. Another strategy is to insert a gene for encoding...

Poplar trees redirect resources in response to simulated attack

...Ferrieri says scientists trying to improve plants' resistance to environmental challenges -- or their ability to perform useful tasks such as carbon sequestration, phytoremediation, or the production of bio-fuels -- could also use functional imaging to help track their progress. In the New Phytologist study, t...

Scientists identify genetic pathways essential to RNA interference

...turally in plants and animals and may help control resistance to viral infection, among other functions. For the current study, lead author John Kim, PhD, and his colleagues developed a strain of C. elegans into which they added a gene that caused the worms to glow under ultraviolet light but also turned that ...

UCSD discovery may help extend life of natural pesticide

...believe also possess the molecule, from developing resistance to Bt, extending the life of this natural pesticid..., who led the team. "But the development of insect resistance to Bt is a major threat to its long term use. Our findings make it possible to understand resistance...

Study of genomic DNA leads to new advances in cancer diagnostics

...s's group classified cells based on sensitivity or resistance to DNA digestion. Non-malignant cells were sensitive to DNA digestion by Alu I while highly malignant cells were resistant. These results suggest that a cell's DNA, or chromatin, is protected during malignancy. This effect was confirmed using three p...

X-Ray Beams And Fruit Fly 'Flight Simulator' Aid Scientists' View Of Muscle Power

... ?generating enough power to overcome gravity, air resistance and drag ?and they do this by beating their wings ferociously,?said Maughan. “We found out that timing is key, where certain molecules have to be positioned exactly with respect to others during each phase of the wing beat in order to produce the hig...

World's largest rainforest drying experiment completes first phase

...leaf canopy more open, compromising its remarkable resistance to fire, it is clear that drought in tandem with fire can swiftly push the tall, dense rainforests of the region towards savanna scrub. The amount of carbon that could be released to the atmosphere by this savannization process is significant --equiv...

Effective Cancer Treatments Follow The Clock

...ntrast, the Cryptochrome knockout mice showed more resistance to the drug at all times than did normal mice. The researchers then tested whether this effect might be due to differences in the metabolic activation of the anti-cancer drug, but found essentially none. “This was a real surprise, because some of th...

Genetically modified rice in China benefits farmers' health, study finds

...which is insect-resistant due to introduction of a resistance gene from the cowpea plant. Both varieties have been in pre-production field trials since 2001. These field trials in China were designed to identify the effects of the genetically modified crops on farm households before the new crops are commercia...

Scientists discuss improved biopesticides for locust control in West Africa

...gnin coating for the spores, which increases their resistance to ultraviolet radiation." Research at Virginia Tech demonstrated UV resistance 15 times greater for coated spores as compared to non-coated spores. "This technology is applicable ...

Substance protects resilient staph bacteria

...valves). Because of the ability of PGA to promote resistance to innate immune defenses, learning more about the protein could lead to new treatments for S. epidermidis and related Staphylococcal pathogens that also produce PGA, according to the RML scientists. In addition, they also are hoping that similar res...

HIV vaccine trial breaks ground for future research

...fferences in immune response or genetic markers of resistance to infection could have made the vaccine more effective. Also examined in the trial were the immune responses to the vaccine. The vaccine was able to generate antibody responses in virtually all participants, and, in general, those with a higher res...

Molecular models advance the fight against malaria

...dy. "In addition to confirming the belief that the resistance was due to these mutations, we have created a prac...m, a parasite carried by mosquitoes, has developed resistance to almost every anti-malarial drug introduced in the past 30 years. Although atovaquone is one of th...

PGA on a tour under the skin

... valves, and intravenous catheters, and antibiotic resistance makes it tough to battle. Moreover, the mechanism through which the organism becomes so pathogenic once the protective barrier of the skin is removed remains unclear. In their study appearing online on February 3 in advance of publication in the Mar...

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