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Tag: "worms" at biology news

Salk scientists hammer out a pathway that promotes muscle cell survival in mice

...ed, all mammals have SIK1, not just mice, and even worms and fruit flies use variations of the enzyme. And as Montminy adds, "Application of this same pathway over and over across species further emphasizes its importance."...

Asexual worm quickly adapts to soil contamination

...daptations in the nematode Acrobeloides nanus. The worms from contaminated soil live longer and lay more eggs under polluted conditions than the worms from unpolluted soil. Dutch-sponsored researcher Agnieszka Doroszuk demonstrated this in her study i...

Newly identified mechanism for silencing genes points to possible anti-cancer strategies

...ic gene. We tested this idea in human cells and in worms and found it to be the case in both. Interestingly, this not only supported our hypothesis, but to see it in such different organisms also suggested that the mechanism involved has long been conserved in evolution." ...

Left-right wiring determined by neural communication in the embryonic worm

...issue of Cell, the researchers show that embryonic worms have a system of gap junctions -- "broadband" communication channels through which cells pass many kinds of molecules and electrical signals -- that allow growing neurons on the left and right to communicate with each other, a system that dissolves a...

Uniform language for describing genes of pathogenic and beneficial microbes

...erms can be used for species ranging from nematode worms to bacteria. Having these terms in place will greatly enhance research in this area.? In the current update, the PAMGO consortium, in collaboration with Jane Lomax and Amelia Ireland of the GO Consortium’s editorial office at the European Bioinform...

A 'traffic light' for neurons means 'go' for improving brain research

...s collaborators in Germany were able to cause tiny worms called C. elegans to stop swimming while their gen...ome experiments, exposure to blue light caused the worms to wiggle in ways they weren't moving while unperturbed. When the lights were turned off, the worms ...

Smithsonian scientists discover new marine species in eastern Pacific

...iversity," said Jon Norenburg, an expert in ribbon worms from the Smithsonian's National Museum of Natural History. More than 50 percent of the ribbon worms he collected have never been seen before. Norenburg studies ribbon worms ranging from those so tiny ...

Secret of worm's poison pill box protein could produce new natural insecticide

...ural insecticides. It had been known that nematode worms can infect and kill insect pests with the help of... eating the body giving free reign to the nematode worms to consume it, multiply and move on. However, until now, researchers had little idea of the make up ...

The origin of the brain lies in a worm

...scientists for centuries. Vertebrates, insects and worms evolved from the same ancestor, but their CNSs are...e last common ancestor of vertebrates, insects and worms already had a centralised nervous system resembling that of vertebrates today. Many animals have ev...

Prehistoric mystery organism verified as giant fungus

...," Boyce said. Millipedes, wingless insects and worms were among the other organisms making a living on land by then, but no backboned animals had yet evolved out of the oceans. "That world was a very strange place," Boyce said. Although vascular plants had established themselves on land 40 million y...

MicroRNA helps prevent tumors

...though such connections have been shown in plants, worms and flies). Several groups have demonstrated that over-expression or under-expression of a microRNA can play a role in certain cancers, but have not clarified the genes responsible. Looking to find a promising target for an individual microRNA, C...

Meat and two neutrons -- the key to a longer life

...es of ageing. The concept has been demonstrated in worms and researchers hope that the same concept can hel...pinov, formerly of Oxford University, fed nematode worms nutrients reinforced with natural isotopes (naturally occurring atomic variations of elements). In i...

Minuscule molecules pack a powerful punch

...ect in mice: previous knockout studies in nematode worms suggested that most microRNAs were not essential. Our findings were dramatically different." The effects of the miR-155 knockout swept across the immune system. The team showed that, although knockout of miR-155 did not appear to affect normal gro...

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

...sveratrol has been shown to extend the lifespan of worms and flies by nearly 30 percent, and fish by almost...s been shown in previous work that the lifespan of worms has been extended by the addition of copies the AMPK gene, and chronic activation of AMPK is seen on...

New clues to how sex evolves

...erse genetics" to the neighboring genes, obtaining worms from the Japanese National Bioresource in which each of the three new genes had been specifically deleted. By observing meiosis (and its failures) in these knock-out worms, it was clear that one of the new genes was responsible for successful pairing...

Hopkins scientists link immune response to 'ghost' parasites and severely congested sinuses

...e tough, protective casing that houses insects and worms to the severe congestion and polyp formation typical of chronic sinusitis. A team of Hopkins sinus experts has found that the gene for the enzyme, acidic mammalian chitinase (AMCase), is up to 250 times more active in people with severe sinus inf...

Ocean seep mollusks may share evolutionary history with other deep-sea creatures

... brew for most species, animals such as giant tube worms and the mollusks studied by Kiel and Little thrive with the help of the symbiotic bacteria. "If you can become adapted to living at these sites, you can make a very good living indeed," Little said. The origins and age of seep citizens such as the m...

First Biodiversity Census of coral reef ecosystems in the NW Hawaiian Islands

...ll invertebrates (tiny crabs, mollusks, sea slugs, worms and more), algae, and microbes over a range of habitats at French Frigate Shoals. Although some of these smaller organisms may not be as charismatic as monk seals, or colorful aquarium fish (until you look under a microscope), they form the complex ...

Worms produce surprise insight into human fever

...l-signaling pathways for innate immunity shared by worms and humans. For one, we have a lot of common enem...fection, yet even cold-blooded “poikilotherms?like worms migrate toward warmer environments in response to infections. But the mechanism of fever as a resp...

Extraordinary life found around deep-sea gas seeps

...eo feed, the scientists observed 30?0 cm long tube worms emerging from beneath limestone boulders and slabs lying at the core of the seeps. Around the rocks were patches of blackened sediment and pockets of white bacterial mats. Most sites also had extensive shell beds consisting of live and dead shells o...

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