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Tag: "effect" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...d until he or she was 30 months old. A similar effect was found in children born to mothers who were depressed during pregnancy. These prenatal mood disturbances worked as reliable predictors of childrens sleep problems even when investigators controlled data for other factors already linked with po...

St. Jude study solves mystery of mammalian ears

...that is, raised or lowered the cilia. There was no effect on amplification. The researchers concluded that somatic motility was not simply a way to make cilia do their job better; rather, there is no connection between the hair cell contractions and how the cilia do their job. Instead, somatic motility, gen...

Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily

...rnegie Mellon scientists used X-rays to detect the effect of FP-23 on lipid bilayers that mimic cell membranes. Lipid bilayers form different phases that change with temperature, but the “fluid” phase is the most biologically relevant. Using X-ray diffuse scattering, the team quantified structural propertie...

Scratch no more: Gene for itch sensation discovered

...failure or liver disease. It can be a serious side effect of cancer therapies or powerful painkillers like m...activity of GRPR. So now researchers can study the effect of these agents on the itch sensation and possibly move that research to clinical applications fairl...

Agent slows aging in mice

... this point. “We don’t know how NDGA is having its effect on survival in this first analysis,” Miller says. “It may be that the female mice because of their hormonal status have other pathways to death and disability, or need higher or lower levels of NDGA to see an effect.” The large, carefully co...

Pregnant mom's exposure to flu vaccine kick-starts fetal immune system

... the mother has been exposed, and this may have an effect on the development of allergic sensitivity (e.g. eczema and asthma) later in an infant’s life. However this hypothesis has remained controversial because of an inability to detect antigen-specific T cells in cord blood. Recently, a newly developed te...

Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring

...tations accumulate and the more likely a potential effect may arise in the offspring,” Yauk said. According to Yauk, previous studies have shown that Ms6-hm and similar locations of non-coding DNA are sensitive to damage from radiation, mutagenic chemicals and intense industrial air particulate pollutio...

Old memory traces in brain may trigger chronic pain

...hat seems abnormal. Easing that may have a bigger effect on suffering.” Chronic pain is not caused by a single mechanism, Apkarian noted. Sensory abnormalities in people with chronic pain probably drive this memory abnormality. About 10 percent of the United States population suffers from chronic pai...

Dirty snow may warm Arctic as much as greenhouse gases

...to the atmosphere and they fall onto snow, the net effect is we warm the polar latitudes,” said Charlie Zend...Earth has only warmed about .8 degrees because the effect is distributed globally,” Zender said. “A small amount of snow impurities in the Arctic have caused ...

In mice, drug protects against diabetes and atherosclerosis

...erol diet is consumed. The drug appears to have no effect on lean animals eating a normal diet, the scientis...isligil, the drug also exerted a marked protective effect against another metabolic disorder, fatty liver disease. While the genetic variant studies in hum...

U-M researchers discover gene switched off in cancer can be turned on

...ing HDAC inhibitors did return BRM expression, the effect was short-lived. Once the drugs were taken away, BRM expression decreased. “The HDAC inhibitors are not the perfect answer, but in principle this tells us we can turn our gene back on. If we can turn the gene back on, it may not be a cure for canc...

Newly discovered antibody may be body's natural defense against Alzheimer's

...year. While this study may provide a signal of the effect of IVIG therapy to clinical outcomes, further investigation in larger controlled and longer-term trials will be needed to definitively demonstrate whether IVIG is useful in treating Alzheimer's. Still, this discovery substantially boosts our unde...

Researchers shed light on mechanism of action used by anti-cancer drug

...s associated with increased protein loads. The net effect of these actions was to induce a shutdown of protein synthesis accompanied by a dramatic increase in cell death. “The notion that sorafenib acts by inhibiting protein synthesis and reducing expression of Mcl-1 suggests that this agent might be lo...

Study shows lizard moms dress their children for success

...trategies. According to Lancaster, the maternal effect on back pattern is important because survival in t...es to help them escape from predators (the optical effect of stripes on fast-moving prey makes them hard to catch). But the genes that control behavior an...

Nurtured chimps rake it in

...roups are directly attributable to the significant effect of level of enculturation. They add that “enculturated chimpanzees may be better at learning within a highly social, interactive context because they have heightened attention to the actions of others.” ...

Research finds that circadian rhythms dominate all life functions

...tern varies in different organs and determines the effect of leptin on regulation of the energy balance. Better understanding gene oscillation may provide researchers with clues for developing ways to treat people who overeat because of impaired leptin signaling. Circadian rhythms are biological rhythms t...

Human genetic 'deserts' are teeming with significant life

...eleted from a model organism in order to study the effect of therapies, he says. “It appears that the same nucleotide [the structural unit of DNA and RNA] on the genome can carry out a number of different, sometimes simultaneous, functions.” Professor Reymond’s team, in collaboration with other laborat...

Researchers identify protein pathway involved in Parkinson disease development

...nson disease. "We now know much more about the effect of PINK1 mutations on the mitochondria and how this novel signaling pathway is disrupted in the development of Parkinson disease," says Lian Li, PhD, associate professor of pharmacology in Emory University School of Medicine and research team leader....

Children of smokers have more than 5 times higher levels of a nicotine toxin

...t smokes was found to have the biggest independent effect on cotinine in the urine – quadrupling it. Having a smoking father doubled the amount of cotinine, one of chemicals produced when the body breaks down nicotine from inhaled smoke to get rid of it. Sleeping with parents and lower temperature rooms...

The mouflons of the Kerguelen archipelago

... time. Instead, we observed the opposite.” The effect of natural selection diversity to be attributable to genetic mutation, and the Islands are much too isolated to have undergone migrations. “This variety can be explained by elimination, over the generations, of individuals with low genetic diversi...

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