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Tag: "combination" at biology news

Blood test may help signal tumor's remission, return in throat cancer patients

...physicians and their patients are now opting for a combination of chemotherapy and radiation as a first line of treatment. However, there is no way to predict which patients will respond well to this treatment or whether a tumor will return later. Clinical exams, X-rays, and magnetic resonance imaging (MRI) are ...

Crammed with charged DNA, pressure rises inside virus

...al to overcoming this repulsion. Without the right combination of positively charged ions, the virus could not force all of its DNA into the capsid.” The researchers discovered that the forces in the capsid are slightly higher than predicted by theoretical calculations. They say this may be because the packe...

Ancient DNA traces the woolly mammoth's disappearance

...eled off, and one of two lineages died out. “In combination with the results on other species, a picture is emerging of extinction not as a sudden event at the end of the last ice age, but as a piecemeal process over tens of thousands of years involving progressive loss of genetic diversity,” said Dr. Ian Bar...

Salty oceans provide early warning for climate change

...til now it wasn’t clear how this occurred. Using a combination of modern observations, numerical models and palaeoclimate data scientists are increasingly realising that salt is the key. Their results reveal that a build up of salty water can stimulate deep water circulation, while a diluting of the waters is...

U-M researchers discover gene switched off in cancer can be turned on

...them more tolerable as a long-term treatment or in combination with other drugs. “Tumors are not the same from...mor are not the same. Giving a single drug or drug combination to 500 people is setting ourselves up for failure, much like a one-size-fits-all clothing store woul...

Study shows lizard moms dress their children for success

...icient hunter, and the lizards need just the right combination of traits to avoid being eaten. "The females ar...won't be caught by predators." Lancaster used a combination of laboratory and field experiments to tease apart a complex set of interactions involving hormones,...

Microbes at work cleaning up the environment

...nt relative to inorganic zinc-sulfide minerals. In combination with the other techniques and experiments, the team concluded that the protein caused the zinc-sulfide nanoparticle aggregation. The researchers conducted experiments guided by known bacterial metal-binding proteins that bind zinc and other potent...

Study finds mix of disease processes at work in brains of most people with dementia

... Among their findings is the observation that the combination of Alzheimer’s disease and cerebral infarcts (stro... pathology with cerebral infarcts is a very common combination in people with dementia adds to emerging evidence that we might be able to reduce some of the risk o...

Mutating the entire genome

... Capecchi improved their new method by using it in combination with a “transposon” or so-called “jumping gene” named piggyBac, which comes from a moth. They used piggyBac to insert pieces of loxP DNA randomly into numerous spots on the mouse genome. So scientists easily can breed multiple generations of mice wit...

Ice Age extinction claimed highly carnivorous Alaskan wolves

...blamed on human hunting or climate change, or on a combination of factors as the Ice Age waned. For the specialized Alaskan wolves, the story is perhaps less complicated. “When their prey disappeared, these wolves did as well,” Leonard said. But the results of this study also imply that the effects of the ex...

Common treatment for methamphetamine overdose may damage brain cells

...from experiments with rats, indicate that only the combination of the medication, haloperidol, and methamphetamine causes the destructive effects, not either one alone. Senior author Bryan Yamamoto, PhD, and his team at Boston University School of Medicine suspect the damage results from the exaggerated stimulat...

An 'elegant' idea proves its worth 25 years later

...ediate clinical success of the treatment, the drug combination was finally approved by the U.S. Food and Drug Administration only in 2005. Brusilow, Hamosh, and colleagues at Stanford University, University of Minnesota, Thomas Jefferson University and the Medical College of Wisconsin looked back at 299 urea...

Smallpox outbreak: How long would it take for vaccines to protect people? Would it work?

... The new vaccine will be given either alone or in combination with Dryvax. "Another purpose of the study is to see how quickly people can be protected against smallpox after a release of smallpox into the environment," Frey said. Dryvax® vaccine is the original Food and Drug Administration (FDA) licensed v...

New bacteria test could improve quality of fruit and vegetable juice

... final product stage. He said the DNA technique in combination with infrared spectroscopy technique won't cause long delays in production. "This combination will be the best way to quickly and accurately detect and identify the bacteria," said Lin, who work...

Toxoplasmosis infection trick revealed by scientists

...site protein binds. Following this the team used a combination of NMR spectroscopy and cellular studies to characterise the behaviour and interactions of the parasite protein and host cell sugars. This means that the team have a more detailed picture than ever before of exactly how the parasite recognises and at...

'Short-circuit' found in ocean circulation

...ant part of it works? The research shows that a combination of rapid mixing across and rapid movement along density surfaces creates a 'short-circuit' in the overturning circulation, meaning it is more concentrated in this part of the Southern Ocean. The researchers made use of a unique signal - the sprea...

Dealing deadly cancers a knockout punch

...entations focused on reovirus efficacy alone or in combination with standard chemotherapies. In one study, i...e results of the preclinical study showed that the combination of reovirus and cisplatin was significantly more effective than cisplatin or reovirus alone at killi...

DOE JGI sets 'gold standard' for metagenomic data analysis

...gies to understand microbial communities through a combination of computational and experimental methods," said Konstantinos Mavrommatis, lead author of the paper and a post-doctoral fellow in DOE JGI's Genome Biology Program. "We are now exploring ways to analyze metagenomic data to enable accurate classificati...

Asexual worm quickly adapts to soil contamination

...enetic adaptation The nematode was exposed to a combination of different pH and copper values. As well as their individual effects, the pH and the copper levels in the soil can exert a synergistic effect on the nematode population. Unexpectedly fast adaptation was observed and considerable genetic changes too...

Heavy multivitamin use may be linked to advanced prostate cancer

... “Because multivitamin supplements consist of a combination of several vitamins and men using high levels of multivitamins were also more likely to take a variety of individual supplements, we were unable to identify or quantify individual components responsible for the associations that we observed,?the auth...

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