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Tag: "mammals" at biology news

To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists

... the potential harm of mutations, humans and other mammals have evolved to make as few as possible. The machinery inside our cells has the ability to replicate our genomes extremely well, and the "polymerase" enzymes that replicate our DNA rarely make mistakes. Even when they do, we have multiple, redundant ...

Radio-tracking associated with 'dramatic shift' in water vole sex ratio

... our results will alert those studying other small mammals to look for similar associations. Our findings are a reminder that the assumption that the use of radio-collars does not fundamentally affect the biology of the subjects always requires careful checking. This study emphasises that the effects of comm...

Future diabetes drugs may target new protein interaction

...cellular aging and responding to calorie intake in mammals for the first time. In bacteria and yeast, the equ...involved in the response to calorie restriction in mammals and in processes involved in cellular aging," says Puigserver. "But we still don't know whether sirt...

PHACCS, an online tool for estimating the structure and diversity of uncultured viral communities using metagenomic information

...cellular aging and responding to calorie intake in mammals for the first time. In bacteria and yeast, the equ...involved in the response to calorie restriction in mammals and in processes involved in cellular aging," says Puigserver. "But we still don't know whether sirt...

Computational verification of protein-protein interactions by orthologous co-expression

...cellular aging and responding to calorie intake in mammals for the first time. In bacteria and yeast, the equ...involved in the response to calorie restriction in mammals and in processes involved in cellular aging," says Puigserver. "But we still don't know whether sirt...

Eliminate Data Analysis Bottlenecks in Drug Discovery

...cellular aging and responding to calorie intake in mammals for the first time. In bacteria and yeast, the equ...involved in the response to calorie restriction in mammals and in processes involved in cellular aging," says Puigserver. "But we still don't know whether sirt...

Scientists analyze chromosomes 2 and 4

...ey have been conserved throughout the evolution of mammals and birds, and work is now underway to figure out their exact functions. Humans have 23 pairs of chromosomes ?one less pair than chimpanzees, gorillas, orangutans and other great apes. For more than two decades, researchers have thought human chromo...

Researchers Identify Cause of Early Bird Sleep Disorder

...und is in "a gene that was not previously shown in mammals to be a circadian rhythm gene," Ptacek explained. It's not yet clear how the mutant gene works to shift people's sleep time, their circadian rhythm, he added. But follow-on experiments in fruit flies and mice yielded results that are intriguing. Whe...

Scientists find viruses can't stick to sea bugs in the dark

...ea with their waste products and killing fish, sea mammals such as whales, dolphins and seals, and even humans. Control of these blooms is vital to the health of the seas. "Research using cyanophages to control blooms of cyanobacteria must take light into consideration," explains Ying Jia. Algal blooms can ...

Unlike other mammals, newborn dolphins and orcas stay active 24/7 during first months of development

...mal sleep during this period, but unlike all other mammals always manages more sleep than her busy newborns. ...t that would indicate accumulated sleepiness. All mammals previously studied have maximum rest or sleep behavior at birth with amounts gradually decreasing to...

Mice brains shrink during winter, impairing some learning and memory

...controls the changes in brain size and function in mammals such as these white-footed mice. Scientists know that levels of melatonin are associated with seasonal changes in daylight. Melatonin is also found in humans, and that's one reason why future research on how brain structure changes by season may be ...

Fat's fate depends on its source

...is an energy-expensive process whose role in adult mammals is poorly understood," said study senior author Clay Semenkovich, of Washington University School of Medicine. "The current study supports the notion that the source of fats affects their physiology. New fats are required to burn fat normally and to ...

Researchers find first evidence of venom system in extinct mammal

...une 23, 2005 in Nature. "Our discovery shows that mammals have been much more flexible in the evolution of v... Nature. Currently, there are two types of living mammals with salivary venom-injecting capabilities: the Caribbean Solenodon (found primarily in Cuba) and th...

Scripps research scientists identify infertility molecule

...din levels. Prostaglandin is a fatty acid found in mammals that is essential for normal implantation. Manipulating parts of LPA signaling may thus be a way of changing prostaglandin levels. This is a significant finding because low implantation rates are one of the major issues facing women who use assisted...

Novel compounds show promise as safer, more potent insecticides

...cium in these cells. These receptors exist in both mammals and insects but have distinct differences. Researchers have known that ryanodine itself has insecticidal properties, but no synthetic molecules had previously been identified that potently and selectively target these receptors in insects, until now....

Novel plague virulence factor identified

...'s pharynx, causing it to die of starvation. Since mammals infected with Y. pestis do not die in this manner,...ella uses similar virulence factors to infect both mammals and C. elegans. "The protein produced by this new Y. pestis virulence-related gene belongs to a fam...

New Look at DNA Hints at Origin of UV Damage

...'s pharynx, causing it to die of starvation. Since mammals infected with Y. pestis do not die in this manner,...ella uses similar virulence factors to infect both mammals and C. elegans. "The protein produced by this new Y. pestis virulence-related gene belongs to a fam...

Size matters: Preventing large mammal extinction

Saving large mammals such as elephants and rhino from extinction could ...ion biologists have always known that large bodied mammals are at greater risk of extinction," comments Professor Georgina Mace of the IoZ, "Now we understand ...

Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations

...hers found the rate of chromosomal evolution among mammals dramatically accelerated following the extinction ...d from a massive comet or asteroid striking Earth, mammals shared fairly similar body plans and also fairly similar genomes. Researchers speculate that the mas...

Vietnam war technology could aid elephant conservation

...ng the size of elephant populations or other large mammals in central Africa, as these populations are relatively small and threatened by poaching," Wood says. The team will now work on improving the system by using an array of geophones which will allow them to use beam forming techniques. According to Woo...

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