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Tag: "difference" at biology news

Whole-genome study at Johns Hopkins reveals a new gene associated with abnormal heart rhythm

...ar SNP is responsible for up to 1.5 percent of the difference in QT interval, meaning that other genes, missed in this study, certainly contribute to QT length. Now that researchers know that variants of the NOS1AP gene correlate with QT interval length, they hope to figure out exactly how the DNA sequence var...

HIV/AIDS rates in Tijuana, Mexico increasing at alarming rate

...availability of sterile syringes, can make a major difference in fighting this epidemic," said Steffanie Strathdee, Ph.D., Chief of the Division of International Health and Cross-Cultural Medicine at UCSD, where the study was conducted. Other co-authors include Robert S. Hogg, Ph.D., UCSD Division of Internat...

DNA gene vaccine protects against harmful protein of Alzheimer's disease

... inflammation in the mice. Dr. Rosenberg said the difference was partly because in the human trial, the protein was injected along with a substance called an adjuvant, which increased the immune response to abnormal excessive levels, causing the dangerous brain inflammation. In addition, the immune response in...

Parents need to be educated about HPV vaccinations for daughters

... "HPV vaccination has the potential to make a huge difference to women's lives, particularly in developing countries," said Professor Kitchener. "Cervical cancer is a major killer of women worldwide. It is not only one of the largest causes of death due to cancer, but is also responsible for a great deal of s...

Contagious obesity? Identifying the human adenoviruses that may make us fat

...eavier compared to the other three groups, but the difference wasn't great enough to be significant by scientific standards. The authors concluded that Ad-37 increases obesity in chickens, but Ad-2 and Ad-31 do not. "Ad-37 is the third human adenovirus to increase adiposity in animals, but not all adenoviruses...

Common molecular 'signature' identified in solid tumors

...h 43 miRNAs allowing scientists to distinguish the difference between normal and malignant tissue. Further tests showed that 21 of the distinguishing miRNAs were deregulated in at least three of the cancers ?and in some cases, as many as five or all six. The researchers defined this limited set as the "miRNA ...

Scientists develop protein-sequence analysis tool

...e new program, called CPDL for "conserved property difference locator," identifies positions where two related groups of proteins differ either in amino acid identity or in a property such as charge or polarity. "Experience tells us that such positions are likely to be biologically important for defining the s...

Why the Amazon rainforest is so rich in species

...apid evolution of species in the Amazon basin, the difference in numbers of species between the temperate zone and tropical South America can be explained by mass extinctions caused by the glaciations. Most species living in North America and Europe are relatively recent arrivals because the original inhabitant...

Travelers can avoid jet lag by resetting their body clocks

...3.0 mg dose compared to the 0.5 dose; however, the difference was not statistically significant. In addition, the higher melatonin dose made the participants slightly more sleepy in the evenings after taking the pill. Therefore, the researchers recommend using the 0.5 dose in combination with morning intermit...

Odd energy mechanism in bacteria analyzed

...o produce energy, but that didn't seem to make any difference in the growth rate of SAR11," Giovannoni said. "So we know that under normal conditions this alternate form of energy production is not required. This system may be there for emergencies. But it may still be very important to ocean life, and that's w...

Plants, too, have ways to manage freeloaders

...tive inhabited larger nodules. "There's not a big difference between strains," Simms said, "yet the plant can distinguish them." In a subsequent experiment, they confirmed that the larger the root nodule, the more nitrogen-fixing bacteria it contained. Only rarely did they find more than one strain of microbe...

A resetting signal keeps circadian rhythm on track in Drosophila fruit flies

...rning to the evening cells and maintains a 12-hour difference between the timing of morning and evening activity, without the need for any environmental cues. The Brandeis researchers came to this conclusion by speeding up only the morning cell clock or only the evening cell clock. The results showed clearly ...

Some good news for the world's poor

...e rates in the labor market. Explaining the large difference in impact between the 15,000 lifted out of poverty in India and the 800 in China, Dr. Fan said this was because China had already achieved rapid and very large reductions in poverty before 1999. "But the overall total reduction in rural poor through ...

Carnegie Mellon scientists create PNA molecule with potential to build nanodevices

...of a single organism. The authors found a similar difference in age-related patterns in the brain of the chimpa...bout 5 million years ago. The explanation for this difference is unknown, but the finding highlights the fact that significant changes in gene expression patterns...

Navigating the brain for sense of direction as paradigm for higher cognitive functions

...of a single organism. The authors found a similar difference in age-related patterns in the brain of the chimpa...bout 5 million years ago. The explanation for this difference is unknown, but the finding highlights the fact that significant changes in gene expression patterns...

Gene Expression in the Aging Brain

...of a single organism. The authors found a similar difference in age-related patterns in the brain of the chimpa...bout 5 million years ago. The explanation for this difference is unknown, but the finding highlights the fact that significant changes in gene expression patterns...

'Perception' gene tracked humanity's evolution, scientists say

...y in human beings than in other primates, and this difference coincides with the evolution of our species, say scientists at Indiana University Bloomington and three other academic institutions. Their report appears in the December issue of Public Library of Science Biology. The gene encodes prodynorphin, an ...

Jefferson researchers find nanoparticle shows promise in reducing radiation side effects

...ce which had not been infected with the virus, the difference between the two groups was highly significant. The researchers then looked more closely at the pancreatic cells and the cell linings of the blood vessels (vascular endothelial cells). They found that although vasostatin seemed to have little impac...

Gene therapy potential for treatment of pancreatic cancer

...ce which had not been infected with the virus, the difference between the two groups was highly significant. The researchers then looked more closely at the pancreatic cells and the cell linings of the blood vessels (vascular endothelial cells). They found that although vasostatin seemed to have little impac...

Clinical trial to test stem cell approach for children with brain injury

...eone who suffers a brain injury. "It could be the difference between being able to recognize your loved ones and not being able to, or between doing things for yourself or having to rely on others. That would be a huge impact on families and on society," Cox said. Trauma is far and away the main cause of deat...

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