Tag: "these" at biology news

Genetics play role in response to most common asthma drug

...Research suggests that genetics may play a role in these differences. Albuterol targets the beta-2 adrener..."More work is needed to determine how to integrate these findings into clinical practice. In the future, patients with the arginine genotype might even be a...

Three years of Proba, the 'smart' satellite that runs itself

...arts typical for satellites. The good news is that these systems have continued to work well throughout Pro...ying information on the environmental condition of these high-biodiversity areas in support of the international Ramsar Convention on Wetlands. Images from ...

New method studies living bacterial cells

...e nation's most brilliant X-rays for research. In these experiments, scientists exposed both planktonic and biofilm cells to elevated concentrations of hexavalent chromium. The researchers then used X-ray fluorescence microscopy to measure the concentrations of elements in individual cells before and afte...

Reductions in blood oxygen levels in newborns could contribute to ADHD development

...r, when juvenile animals are old enough to display these behaviors. The Emory scientists found that juveni...comes in rats to further confirm the similarity of these behaviors to those identified in ADHD. They also are planning studies aimed at preserving the brain...

Brain differences in adolescents, psychopaths, lend to their impulsive, risk-taking behavior

...rection of favoring short-term benefits, even when these benefits are weighed against potential long-term detriments," says Jonathan Cohen, MD, PhD, of the department of psychology at Princeton University. In one study, Gregory Berns, MD, PhD, and his colleagues at Emory University School of Medicine f...

Deciphering an autism mystery

... depends on complex circuits between cells sending these messages to one another. Blatt hypothesizes that i...ne of the receptor types for acetylcholine. To see these changes, they used a radioactive labeling chemical that binds specifically to the muscarinic recepto...

Early life stress harms mental function and immune system in later years

... the barn owl to rodents to humans-suggesting that these effects are mediated by fundamental mechanisms. ...lt animals' adaptability to new stimuli. Together, these studies point to exciting new approaches for potentially lessening or preventing these long-term cha...

Calorie restriction leads to some brain benefits but not others in mice

...dical damage, we may be able to prevent or reverse these impairments." Though numerous studies have shown s...imals fed normal diets were significantly worse at these tasks. But calorie restriction had almost no effect on several drills used to measure pure cognitive...

Pesticides may promote Parkinson's disease and exercise may offer protection

... nigra from degeneration and death. To investigate these possible protective properties, scientists at Schw...han the sedentary rats. "There was a problem with these studies, however," says Michael J. Zigmond, PhD, of the University of Pittsburgh. "The injections of...

OHSU scientists identify key gene that delays female puberty

...ely from neurons. They then tracked development of these animals in comparison with a control group of wil...Ojeda. "It will be important to continue observing these patients to determine whether they also witness a delay in the onset of puberty."...

Nitric oxide is essential for animal development

...genes with partially overlapping function; because these genes may compensate for each other if one of them is mutated, an essential function for NO would be masked. In the new work, researchers Grigori Enikolopov, Michael Regulski, and their colleagues from the Cold Spring Harbor Laboratory show that, in...

Soaking up signal: Endocytosis controls spreading and effective signaling range of Fgf8 protein

...ive to such protein signals, and thus the range of these signals within a given tissue must be precisely regulated to prevent morphological defects from arising during development. Fibroblast Growth Factors are a group of signaling molecules that influence a wide range of cellular decisions, such as induct...

Singled out: Spotting mutant neurons in normal brains offers clues to Fragile X

...xpression of a glowing fluorescent protein, making these nerve cells distinctly visible in an otherwise nor... protein label allowing the entire architecture of these neurons to be visualized in the intact brain. From the observations made with this approach, it beca...

Sandbagging cancer in the bloodstream

...ified a number of the adhesion molecules that hold these endothelial cells together. They have also identif...been clear how the tumor cells actually get out of these vessels and form new tumors in distant organs, says Cheresh, but part of the answer may lie in the f...

Potential new oncogene may be missing link in cancer-causing chain

...pidly as a result. When the researchers introduced these aggressive cells into mice, the animals developed ...ncrease of LRP6 alone may lead to breast cancer in these cases." Next Bu and his colleagues plan to screen a larger group of breast cancer samples to see ho...

New center to map DNA of key lab mice

...lJ, NOD/LtJ, NZW/LacJ, PWD/PhJ, and WSB/EiJ. Since these strains will be sequenced in reference to C57BL/6J...dy have identified dozens of genetic components to these disorders, but few well-established animal models are available for understanding the interplay of g...

Farmers don't need a new superstar toxin to fight bugs

...to find commercially viable protectants to control these resistant insects because moderate-toxicity protec...d we were very surprised by the findings. Although these results are exciting, we are well aware that a number of issues must be addressed before this approa...

Psychologist finds instance where 'two wrongs do make a right'

...ks draw on different subsets of maps." To untangle these error-prone maps, the researchers employed an illu... visual input into motor output, Dassonville says, these findings enhance our understanding of the most fundamental concepts of how we experience and interac...

Predicting infection risk of mosquito-borne disease

...when populations are declining. The combination of these factors results in, for example, the surprising prediction that the risk of infection can be lowest just outside an edge of town. By mapping larval habitats against the local risk of mosquito-borne infections, Smith and colleagues conclude, epidemio...

Children's Hospital Boston geneticist awarded for research on muscular dystrophy

...entifying genes, to understanding how mutations of these genes cause disease, to finding new diagnostic tec...hy. Today, Kunkel continues to explore the role of these proteins and the more than 40 genes that have now been linked with various muscular dystrophies. Hi...

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