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Tag: "affected" at biology news

Scientists solve 30-year-old mystery of mutant mouse's kidney woes

...cesses in kidney development break down in infants affected by the condition. Researchers at The Jackson Laboratory first noted the mouse line's mutation in the early 1970s when some of the mice developed enlarged bellies and died within three to four weeks of their birth. Scientists initially assumed that ...

Inheriting a tendency to brain infection

...sive: an individual had to carry two copies of the affected gene to show the predisposition. Evidence he collected during an epidemiological survey in France supported that idea. The survey, conducted with pediatric neurologist Marc Tardieu of the Kremlin-Bicêtre hospital in Paris and genetic epidemiologist...

Air travel and pandemic flu

...major outbreak was under way, banning flights from affected cities would be effective at significantly delaying worldwide spread only if almost all travel between cities could be stopped almost as soon as an outbreak was detected in each city. It would be more effective to take other measures that would contr...

Gut reaction: Researchers define the colon's genome

...rvous systems, as features of our biology that are affected by our individual environmental exposures? How is the human microbiome evolving as a function of our changing diets, lifestyle, and biosphere? Finally, how might we alter these microbial communities for better health in a person or population? ...

Leptin has powerful effect on reward center in the brain

...well studied, but it was not known how the hormone affected activity in the VTA, which contains dopamine neurons that are important in modulating motivated behavior, addiction and reward. Reducing the function of the leptin receptor in the VTA region resulted in animals that ate too much and were hypersensi...

No-mow grass may be coming to your yard soon

...aid, showed that limiting brassinosteroids in rice affected leaf angle and improved yield in densely planted fields. Vert and Chory's work helps trace a molecular pathway that is ancient -- perhaps more than a billion years old -- in both plants and animals. "Remarkably, steroid biosynthetic enzymes are hig...

Fly's courtship sheds light on the formation of innate behaviors

...red (and potentially evolve) as the gene itself is affected by external cues, by interactions with other genes, and by the organism's neuronal environments. ...

Newborn screening can cause unnecessary parental stress

...en and Gurian also found that false-positive tests affected the parent-child relationship: parents in the false-positive group scored more highly on two subscales of the PSI: a Parent-Child Dysfunctional Interaction scale and a Difficult Child scale. (The first asks parents to rate their agreement with state...

What controls stickiness of 'smart' chromosomal glue

...ied how the cell's inability to phosphorylate Rec8 affected meiosis. Those experiments showed that phosphorylation is, indeed, important for governing the step-wise loss of cohesins, said Amon. She also noted that research published in two complementary papers from the laboratories of Kim Nasmyth and Yoshinor...

Nanotubes used for first time to send signals to nerve cells

...ientists also studied how different kinds of SWNTs affected the growth and development of neuroblastoma cells. They compared cells placed on mats made of "functionalized" SWNTs, carbon nanotubes with additional molecules attached to their surfaces that may be used to guide cell growth or customize nanotube el...

Study identifies substances in grapefruit juice that interact dangerously with some drugs

...rable and even dangerous side effects. The drugs affected by grapefruit juice usually have some difficulty entering the body after they are consumed because an intestinal enzyme, CYP3A, partially destroys them as they are absorbed. Grapefruit juice, but not other commonly consumed fruit juices, inhibits thi...

Evolutionary forces explain why women live longer than men

... socioeconomic status shows that the gender gap is affected by social standing. Human males in lower socio-economic levels tend to have higher mortality rates than their higher-status peers. The impact of social standing is greater on male mortality than on female mortality, Kruger noted, partially because ma...

Bioengineered tissue implants regenerate damaged knee cartilage

...h can lead to cartilage regeneration even in knees affected by osteoarthritis. The tissue engineering method used in this study involved isolating cells from healthy cartilage removed during surgery from 23 patients with an average age of 36 years. After growing the cells in culture for 14 days, the researc...

Wasps queue for top job

...group were manipulated to show how these variables affected the amount of help each individual contributed to the group. The team changed the position of individual wasps in the social hierarchy by removing higher ranked, older wasps, thus promoting their younger relatives. Regardless of age, a wasp's contr...

Pollutant haze heats the Arctic

... He notes that the thickness of Arctic sea ice "is affected by such things as how much the atmosphere blankets the surface. Sea ice is changing very rapidly in the Arctic because of surface warming. This may be one contributing factor." "The Arctic represents the front line of climate change and is projecte...

Report warns about carbon dioxide threats to marine life

... such as pteropods, a planktonic marine snail--are affected by the chemistry changes. Shelled pteropods are an important food source for salmon, mackerel, herring, and cod. If calcifying organisms such as pteropods are unable to sustain their populations, many other species may be affected. "Decreased calcif...

DNA to the defense

...on further dims hopes for an effective vaccine for affected populations in rural Africa. ...

Researcher studies, treats military with 'silent disease'

...rs were faring with treatments and how the disease affected the quality of their lives. From the start, Sjogren wanted to answer specific questions for servicemembers who have Hepatitis C: What happens to these people over time? How does it affect their quality of life? What happens when you treat them? "We ...

Gorilla susceptibility to Ebola virus: the cost of sociality

...ividual morphological characteristics. Ebola virus affected this population in 2004. During and after the outbreak, the researchers used the data on the identity of animals previously observed to estimate Ebola-induced mortality and to test the validity of different possible contamination scenarios. The autho...

Gut microbes' partnership helps body extract energy from food, store it as fat

...tary polysaccharides, and wondered whether it also affected which types of polysaccharides are most coveted by... smithii. The archaeon's presence dramatically affected gene activity in B. thetaiotaomicron, shifting its appetite to a more abundant class of polysacchari...

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