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Tag: "maintain" at biology news

Mouse brain cells rapidly recover after Alzheimer's plaques are cleared

...ght not just causedamage but also somehow actively maintain it.The study, will appear in the Feb. 5 issue of the Journal of ClinicalInvestigation.Lead author Robert Brendza, Ph.D., research instructor, began theexperiment with one key question: how did clearance of brain plaques,made possible by the developme...

Key molecule in plant photo-protection identified

...ght not just causedamage but also somehow actively maintain it.The study, will appear in the Feb. 5 issue of the Journal of ClinicalInvestigation.Lead author Robert Brendza, Ph.D., research instructor, began theexperiment with one key question: how did clearance of brain plaques,made possible by the developme...

Another Look Finds Promising Proteomics Test is Not Biologically Plausible

...rs before symptoms appear, but Baggerly and others maintain that the promise of this emerging field of proteomics has not yet been met due to the difficulty in finding complex, reproducible patterns of proteins. According to Baggerly, that now appears to be the case with the experimental ovarian cancer test ...

New species from old data

...rs before symptoms appear, but Baggerly and others maintain that the promise of this emerging field of proteomics has not yet been met due to the difficulty in finding complex, reproducible patterns of proteins. According to Baggerly, that now appears to be the case with the experimental ovarian cancer test ...

Cracking the olfactory code in bees

...rs before symptoms appear, but Baggerly and others maintain that the promise of this emerging field of proteomics has not yet been met due to the difficulty in finding complex, reproducible patterns of proteins. According to Baggerly, that now appears to be the case with the experimental ovarian cancer test ...

Signaling protein builds bigger, better bones in mice

...rs before symptoms appear, but Baggerly and others maintain that the promise of this emerging field of proteomics has not yet been met due to the difficulty in finding complex, reproducible patterns of proteins. According to Baggerly, that now appears to be the case with the experimental ovarian cancer test ...

Iron Deficiency Sparks Dramatic Changes In Gene Expression

...s by shutting down the major ironusers in order to maintain the cell's essential functions, said DennisJ. Thiele, Ph.D., professor of Pharmacology and Cancer Biology at Duke.He said their discovery could aid in the diagnosis and ultimately thetreatment of serious disorders caused by low iron levels.Results of...

Researchers reveal the infectious impact of salmon farms on wild salmon

...e of the fish that compromises a fish's ability to maintain its salt-water balance. When infection rates are high enough, the parasites feed on the fish at rates greater than the fish can feed itself, literally eating the fish alive. Adult salmon can survive sea lice infection, but young salmon are much more ...

Enzyme shown to help protect genomic stability

...biquitin is associated with gene activation and to maintain low levels of the ubiquitin molecule at those sites. Interestingly, Ubp10 appears to work similarly and in concert with another enzyme called Sir2, which removes acetyl molecules from histones. Sir2 has also been associated with promoting genomic st...

Scientists discover the cellular roots of graying hair

...ng place, the pigmented cells likelydid nothing to maintain the mice’s hair color.To see if the cells behaved the same way in humans, the investigatorsexamined human scalp tissue taken at increasing ages, and determinedthat the same pattern occurred.Since cell survival in general is influenced by an “anti-dea...

Plant hemoglobins: Oxygen handlers critical for nitrogen fixation

... root nodules. Furthermore, these proteins help to maintain free-oxygen concentrations in nodules at levels low enough to avoid damage of oxygen-sensitive nitrogenase, the bacterial enzyme complex responsible for symbiotic nitrogen fixation. Thus, plant hemoglobins fulfill roles analogous to those of animal h...

Fundamental Finding Yields Insight into Stem Cells, Cancer; Opens Door to Drug Discovery

...ng place, the pigmented cells likelydid nothing to maintain the mice’s hair color.To see if the cells behaved the same way in humans, the investigatorsexamined human scalp tissue taken at increasing ages, and determinedthat the same pattern occurred.Since cell survival in general is influenced by an “anti-dea...

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

...ng place, the pigmented cells likelydid nothing to maintain the mice’s hair color.To see if the cells behaved the same way in humans, the investigatorsexamined human scalp tissue taken at increasing ages, and determinedthat the same pattern occurred.Since cell survival in general is influenced by an “anti-dea...

Vital step in cellular migration described by UCSD medical researchers

... inhibits Rac activity in the back of the cell, to maintain directional movement. In laboratory experiments with human and animal cells, the UCSD team discovered that the alpha4 integrin recruits enzymes that block Rac activity only at the rear of a crawling cell. The scientists noted that alpha4 integrins a...

Elephants imitate truck noises, other animals

...social systems as elephants use vocal imitation to maintain individual-specific relationships, "study co-author Stephanie Watwood of WHOI said. "Our study suggests that elephants may be using their vocal learning abilities in a similar manner, and opens a fascinating new area for research on how elephants use...

UCSD researchers maintain stem cells without contaminated animal feeder layers

...actor this is secreted from mouse feeder layers to maintain stem cells' undifferentiated state and pluripotenc... secretion, finally shown in additional testing to maintain the undifferentiated state. The study's first author, Gillian M. Beattie, M.S., UCSD Department of ...

Elephants imitate sounds as a form of social communication

...social systems as elephants use vocal imitation to maintain individual-specific relationships, "study co-author Stephanie Watwood of WHOI said. "Our study suggests that elephants may be using their vocal learning abilities in a similar manner, and opens a fascinating new area for research on how elephants use...

Highly adaptable genome in gut bacterium key to intestinal health

...apidly changing nutrient conditions but also helps maintain the functions and stability of the gut's highly co...havior benefits the bacterium and presumably helps maintain the stability of the microbial society that it is an integral part of." The dietary switch also cau...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

...hat they then substantially reduce gas exchange to maintain the oxygen at these safe values," Bradley said. "T... insect. Bradley explained that insects typically maintain 4-5 kilopascals of oxygen in their respiratory systems, 4-5 times lower than the normal oxygen conce...

Ice core 'dipstick' indicates West Antarctic ice has thinned less than believed

...line would have had to have a very slippery bed to maintain its continuous flow, Waddington said, and it appears the ice flowed vigorously despite being relatively thin. One major implication of the research, he said, is that it disputes the theory that West Antarctic ice streams retreated when the ice shelf...

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