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Tag: "changes" at biology news

Groundbreaking Canadian asthma study

...receive the procedure, showed significant positive changes such as: decreases in asthma attacks, increases in days with no asthma symptoms, improvement in quality of life, reduction in using medication, and an improvement in asthma control. "These findings are very encouraging and are consistent with earl...

Unicellular microRNA discovery

...icroRNAs in a unicellular organism. “The finding changes the dogma that miRNAs only exist in multicellular organisms, and adds an important piece into the blooming small RNA world. A pressing question we have now is what these miRNAs are exactly doing in the green alga. I hope we will know the answers soo...

Does a peptide affect the heart's response to social isolation?

...behaviors similar to depression and cardiovascular changes indicating a possible increased risk of heart dise...suggest that oxytocin can prevent damaging cardiac changes in adult female prairie voles exposed to social isolation. While there are limitations to the study,...

Genes and genius: Researchers confirm association between gene and intelligence

...ntly, she says it's too early to predict how small changes in the gene might be influencing communication in the brain to affect intelligence, and she says it's nearly certain CHRM2 is not the only gene involved. "Perhaps as many as 100 genes or more could influence intelligence," she says. "I think all ...

Scientists identify a candidate gene for osteoporosis

...e. However, Mohan and his colleagues predict that changes in the amino acid sequence or alterations in regulatory regions of the DARC gene may lead to key functional changes. "There are interesting differences between African Americans and Caucasians that could be associated with this gene," explains M...

'Exercise pill' switches on gene that tells cells to burn fat

...nd diabetes. The ability to chemically engineer changes in metabolism also has given the researchers more ...tch works, says Dr. Evans. Genetically engineering changes in metabolism in the marathon mice triggers both increased fat burning and increased endurance. Adu...

Chromosomal microarray analysis proves accurate

...ns and losses of genetic information. "If these changes are big enough, they can cause significant disabilities," said Beaudet. The technique used is also much more efficient, making it possible to do the equivalent of a couple of thousand of more common testing methods in one test. "If you tried t...

Does evolution select for faster evolvers?

...how populations respond to point mutations ?random changes in single nucleotides on the DNA chain, or genome....fessor Jeong-Man Park attempts to find out how HGT changes the overall dynamics of evolution. In comparison to existing models that account for only point muta...

Cancer cells forming blood vessels send their copper to the edge

...ontent in metal-binding proteins. If such dramatic changes in where cellular copper is stored and used can happen so rapidly during angiogenesis, then the interactions of metal ions, such as copper, with the proteins and macromolecules that bind them in the cell must have very fluid dynamics themselves. ...

Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply

...ective analyses and instead prevent ecosystem-wide changes from happening in the first place." "Our stud...es evidence that the loss of great sharks triggers changes that cascade throughout coastal food webs," says Baum. "Solutions include enhancing protection of gr...

Chronic pain up almost 40 percent among US workers in past decade

...dressing Pain at Work There have been positive changes in the workplace in the last decade. More than two-thirds, or 66 percent, of employers surveyed now offer worksite wellness programs to employees, compared to 40 percent in 1996. But while the number of wellness programs is relatively high, the numb...

Salmonella survives better in stomach due to altered DNA

...ces, the DNA can change a bit and this can lead to changes in the genetic characteristics. This can, for example, lead to antibiotic resistance but also heat or acid resistance. The pathogens with the best genetic characteristics can spread and survive better and are therefore more infectious: the evolution ...

Endangered shortnose sturgeon saved in Hudson River

... Bain. "Scientists and legislators have called for changes in the U.S. Endangered Species Act; the act is being debated in Congress and has been characterized as failing to recover species." However, he said, recovery of the shortnose sturgeon suggests the combination of species and habitat protection with...

How does your brain tell time?

...proposes a new model in which a series of physical changes to the brain’s cells helps the organ to monitor the passage of time. "The value of this research lies in understanding how the brain works," said Dean Buonomano, associate professor of neurobiology and psychiatry at the David Geffen School of Medi...

White blood cells of cancer-resistant mice overwhelm natural defenses of cancer cells

...utated gene or genes in the cancer-resistant mouse changes the white blood cells so they interpret those same signals from the cancer cells as an invitation to attack. "Identifying the mutated gene (or genes) will likely explain this unique resistance to cancer through immunity," said Cui, associate profes...

Single molecule extends fat mice lives by reversing gene pathways associated with disease in obese

...and found that the drug reversed nearly all of the changes in gene expression patterns found in mice on high ...lso wanted to see if resveratrol could reverse the changes in gene expression patterns triggered by high calorie diets. Using liver tissue of five mice at 18 m...

Low levels of neurotransmitter serotonin may perpetuate child abuse across generations

...nt abuse may be perpetuated between generations by changes in the brain induced by early experience, researc... whether their early experience produced long-term changes in brain processes that regulate emotions. We also noticed that about half of the babies exposed to...

New study aims to stop sepsis in its tracks

...rive, causing widespread inflammation and dramatic changes in body temperature, blood pressure, breathing, and heart rate. It can lead to the malfunction or failure of several major organs. "The goal of this project is to speed recovery, increase survival rates, and improve the long-term quality of life fo...

Neuron cell stickiness may hold key to evolution of the human brain

...le to identify a series of human-specific sequence changes that have a high likelihood of turning genes on an..., we're trying to identify other kinds of sequence changes that may have played a role in human evolution, such as nucleotide insertions, deletions or duplicat...

Unique gene regulation gives chilly bugs survival advantage at bottom of the world

...ainst environmental stresses including temperature changes as well as changes in water, oxygen and pH levels, said David Denlinger, the study's lead author and a professor of ent...

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