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Tag: "studies" at biology news

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

...out of the same stressful pregnancies. Related studies now show that stress, which is associated with increased exposure stress hormones, like cortisol, may disrupt a childs formation of a bundle of nerve cells in the brain called the suprachiasmatic nucleus which act as a signaling system that tunes t...

St. Jude study solves mystery of mammalian ears

...lights the importance of basic hearing research in studies into the causes of deafness. A report on this work...dy, Zuo and his team conducted a complex series of studies that showed in mammals that the role of somatic mobility driven by prestin is not simply to modify t...

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

...alled fusion peptide 23, or FP-23 for short. Prior studies have shown that FP-23 fuses with, and can even break apart, blood cells and other man-made, cell-like structures called liposomes. FP-23 likely plays several roles in viral fusion, according to the researchers. One role already suspected is that FP-...

Genomic Analysis Uncovers New Targets for HIV Vaccine

...gators said will be a series of future genome-wide studies to pinpoint additional targets for HIV vaccines. I...r. "As we expand the number of patients in future studies conducted by CHAVI researchers, we aim to discover even more polymorphisms that could provide additi...

One species, many genomes

...conduction the study. "By extending these types of studies to other species we hope to help breeders to produce varieties that are optimally adapted to rapidly changing environmental conditions," explains Weigel. He is already collaborating with the International Rice Research Institute (IRRI) in the Philipp...

Identified main genetic variants involved in response to HIV

...ore rational vaccine development. This and similar studies should push us toward more personalised medicine, where the most suitable drugs for each individual would be determined on the basis of their gene characteristics....

Art and music for the birds

... says Demaray. While there have been no scientific studies on birds’ response to human music, anecdotal evidence suggests that certain species of bird listen to and replicate human song. “My interest with the piece was to get us to think about the impact we have on the other species around us,” she adds. ...

Nicotine rush hinges on sugar in neurons

...e for the sugar molecules in such proteins. “Our studies fill a major gap in the field and set a new paradigm,” said Lin Chen, associate professor of molecular and computational biology at USC. Many existing theories, which do not consider sugar’s role, are probably incomplete, Chen said. The debate ov...

Common cancer gene sends death order to tiny killer

...tivates microRNAs like miR-34a because a number of studies have demonstrated that these tiny RNA molecules are frequently abnormal in cancer cells. "P53 is one of the most commonly mutated genes in human cancers," says Mendell. "And there is now a great deal of evidence that microRNAs themselves can act t...

Research identifies protein that signals flowering in squash plants

...igenic signal in this system. Next, heterografting studies were conducted using flowering Cucurbita maxima (pumpkin) stocks (the stock is the portion below the graft union containing the roots) grafted to non-induced, LD-grown C. moschata scions (the portion above the graft union). These experiments led to f...

Researchers discover inherited mutation for leukemia

...re affected, making it difficult to do the genetic studies needed to find possible mutations, Plass says. The family examined in this research was identified by collaborator Henry Lynch at Creighton University. The researchers are now studying the chemical pathway that regulates the gene, considering...

Agent slows aging in mice

...ng and its accompanying ills. Miller says prior studies typically have been too small and their results ha...decided to fund grants at three institutions to do studies of this sort in the right way,” he says. In six to 10 months, once all the mice in the control g...

Enzyme delivered in smaller package protects cells from radiation damage

...ey, liver and thyroid gland. Based on previous studies showing that intravenous gene therapy delivery of the enzyme manganese superoxide dismutase (MnSOD) could protect mice from whole body irradiation, and in preparation for a potential clinical trial of systemic MnSOD in humans, the University of Pitts...

Brain inflammation may be friend, not foe, for Alzheimer's patients

...n in Alzheimer’s disease. O’Banion notes that some studies have found that taking medications to squelch inflammation, such non-steroidal anti-inflammatory drugs or NSAIDs, might help reduce a person’s chances of getting Alzheimer’s disease, while other studies, including a study of more than 2,100 people pu...

Blood test may help signal tumor's remission, return in throat cancer patients

...hroat cancer; therefore, they caution that further studies are needed in larger groups of patients to confirm...n the monitoring of other forms of cancer. Further studies would need to be performed on patients with these types of cancer as well....

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

...pring,” Yauk said. According to Yauk, previous studies have shown that Ms6-hm and similar locations of no...f DNA where genes reside, Yauk notes that previous studies correlate mutations in non-coding regions with those in coding regions, and that some repetitive reg...

Old memory traces in brain may trigger chronic pain

...h the majority is back pain. One of Apkarian’s studies with rats tried to separately measure their emotional suffering and their physical pain after being treated with the drug. (The rats had chronic pain from a healed limb injury.) The results indicated the animals’ emotional suffering decreased much mo...

Gene therapy delivery of nerve growth factors reverses erectile dysfunction in animal model

... nerve growth promoter and has been shown in other studies to contribute to survival and regeneration of peni...at four weeks after treatment. Fluorescent protein studies also showed that the delivered genes had been effectively incorporated into the target nerve cells. ...

Simulations unravel outer membrane transport mechanism

...rge molecules to pass through. Crystallographic studies had shown that TonB binds to one end of the lumina...n to make way for the large molecules. Previous studies had been inconclusive, however. Molecular biologists have difficulty studying systems that involve c...

Snoring in children might be an allergic type disease

...uld apply to the general population where previous studies have also found strong associations between allergic or inflammatory diseases and snoring. “Snoring can be an early manifestation of more serious sleep-disordered breathing, so it’s not necessarily a harmless condition,” Dr Marshall added. “In ad...

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