Tag: "roundworms" at biology news

Chumminess Of Roundworms Linked To Single Gene, Offering Insight Into Mechanisms Of Social Behaviors

Some roundworms dine alone, while others sup socially, and the rea...ents," Bargmann said."Of course, it is the way the roundworms respond to food, pheromones and otherfactors that ultimately prompts their behavior, social or solit...

UCSF Finding Offers Insight Into Way Genes Regulate Aging And Life Span

...sco researchers have made a significant finding in roundworms thatmay offer insight into the way in which genes ... to play an important role in controlling aging in roundworms doesso not by acting within individual cells to control each cell's fate, but byacting within certai...

Duke Study Finds More Genes May Be Affected By Toxic Cadmium

... their DNA. Liao first exposed some of the roundworms to elevated levels of cadmiumwhile leaving others ...imal'slife, the researchers were careful to select roundworms representing the entireC. elegans life cycle. Freedman and Liao thus avoided the age bias that theyi...

Enzyme Required To Prolong Life In Worms Identified By Researchers At Columbia; Key Enzyme Appears To Protect Animal Cells From Oxidative Damage

...isrequired to prolong the life span of microscopic roundworms and that strains oflong-lived worms appear to prod...uces it ctl-l. Because the cells in adult roundworms do not divide, the research may beapplicable to non-dividing cells in other animals, such as human n...

Reproductive Signals Affect Lifespan In Roundworm C. Elegans, Offering Possible Insight Into Human Aging Process

... both the germ cells andthe surrounding tissue the roundworms lived a normal lifespan. This was a veryimportant finding, because it showed that just having progeny did not shortenthe lifespan of the animal. Thus, contrary to the predictions of sometheorists, there was no tradeoff between having progeny and li...

Roundworms provide clues to human kidney disease

... type, you can learn about its function. The tiny roundworms are easier and faster to work with than mammalian cells,and the entire sequence of the C. elegans genetic code is already known."The advantage is that we can do a lot of experiments faster," Sternberg said."It would be exciting to find more genes t...

Zebrafish's powerful heart gene could lead to transplant therapy

...o humans than non-vertebrate models such as yeast, roundworms and fruit flies(even though the latter have provided valuable information about mechanisms invertebrate). Moreover, unlike other vertebrate model systems (principally the frog, chickand mouse), the animal offers the opportunity to search for mutation...

Smell, taste may influence lifespan of the roundworm C. elegans

...ll as normal. Depending on the genes targeted, the roundworms lost some degree of sensory perception. Theresearchers ultimately focused much of their research on two of the numerous mutated genes studied,daf-10 and osm-5. Whether humans have a hormone signaling system that regulates lifespan remains to be seen...

Emerging 'R&D' patterns in genes may reduce evolution's risks

...milies of proteins present in C. elegans and other roundworms that are absent in the human genome. Families and superfamilies, they concluded, are being created throughout evolutionary history. "The big surprise, though, is evidence that old superfamilies can be remarkably stable alongside a new family being c...

U-M scientist finds molecule plants use to control early cell development

...mmon cell signaling technique used by animals from roundworms to humans to control transformations from unspecialized stem cells to specialized organ cells. In addition to its significance for basic science, the discovery could have important applications in agriculture, according to Clark, an associate profess...

Researchers find evidence of aging system that may promote long life

...gest may promote long life in species ranging from roundworms to humans. The mechanism begins in the brain with a mutant gene that suppresses the release of hormones that prompt rapid aging. This is the first evidence of the way this aging mechanism works, said lead investig...

UCSD biologists identify genetic mechanism conferring resistance to 'Bt toxins'

...rcumvent the evolution of Bt-resistant strains of roundworms and insects. "There are insects in the wild n...technician Daniel E. Stevens, to conclude that the roundworms Bt toxin resistance resulted from the loss of a galactosyltransferase, an enzyme that adds carbohy...

U. of Colorado researchers identify switch that controls aging in worms

...ce magazine showing that mutating a single gene in roundworms could double their lifespan -- the first researcher discovered the lifespan of an animal could be increased by genetic mutation. Since then, researchers around the world have been tinkering with proteins and genes of C. elegans in attempts to unders...

Networking slows down protein evolution, study reveals

...ing that a wide variety of species - from yeast to roundworms to humans - carry thousands of virtually identical...ple over billions of years of evolution. Yeast and roundworms Yeast and roundworms have been the subjects of intense international research efforts, which culmina...

Bt toxins found to kill parasitic roundworms

...onmentally safe means of controlling the parasitic roundworms that each year destroy billions of dollars in crop...ollars worth of agricultural damage from parasitic roundworms each year, but also the potential for preventing some important and debilitating forms of human and ...

Scientists study roundworms for behavior patterns

...is Rene Garcia's biology lab, tens of thousands of roundworms are bumping into one another, slithering together and breeding. For the tiny worms, known to science as C. elegans, it's all just another day on a laboratory petri dish. But somewhere in the writhing masses, Dr. Garcia suspects, lie clues to a myster...

Biologists uncover genetic links to broad range of human disorders resulting from cilia dysfunctions

...er of key genes that humans, mice, fruit flies and roundworms all need to produce hair-like cellular protrusions known as cilia--a structure that when absent or defective in certain cells has been linked to human infertility, blindness, kidney disease and lung dysfunction. In a paper featured on the cover of t...

UW-Madison scientists find a key to cell division

... development. "We used nematodes, which are small roundworms that are cheaper and quicker to use than mammalian cells, to assess gene function," Skop says. "All but two of the proteins from the mammalian cells were homologous in the nematodes, which allowed us to perform this mutli-organismal approach. The fac...

Researchers establish first molecular link between eating and aging

... who has been studying the aging process in yeast, roundworms and mice for more than a decade. In the June 2 online issue of the journal Nature , scientists in Guarente's lab, including Frdric Picard, a research scientist in the Department of Biology who is lead author of the paper, publish their research res...

UCSD biologists discover cell's defense mechanism against class of disease-causing bacterial toxins

...very is the team's finding that animal cells, from roundworms to mammals, have a natural defense mechanism to wa...hort period of time, as might occur in nature, the roundworms recover and continue to survive. Recognizing that this natural defense mechanism to a pore-forming t...

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