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Tag: "this" at biology news

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

...ancy and toddlerhood, finds a study that published this month in Early Human Development. While this finding presents itself as important news to tired new moms and dads for whom a soundly sleeping ch...

St. Jude study solves mystery of mammalian ears

...n studies into the causes of deafness. A report on this work appears in the advanced online issue of “Proc...s the motor in mammalian outer hair cells triggers this contraction. And that is where the debate begins. While both mammals and non-mammals have cilia on ...

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

...entists can quantify the energy needed to overcome this resistance. The Carnegie Mellon team found that FP...ding on the thickness of that membrane. “Reducing this energy should help explain in part how HIV infection occurs so readily,” said Tristram-Nagle. “Our f...

Genomic Analysis Uncovers New Targets for HIV Vaccine

...was designed to do big science, and the results of this analysis represent just the first of what should b...f us individually could accomplish. The results of this and future CHAVI studies should help individual laboratories across the world perform research to be...

Scratch no more: Gene for itch sensation discovered

...hen, Ph.D., found that laboratory mice that lacked this gene scratched much less than their normal cage-ma... central nervous system. The findings are reported this week in Nature through advance online publication. Chronic itching is a widespread problem. It can ...

FDA sees nanotech challenges in every product category it regulates

... confidence in emerging products.” Just released, this is the first report from the Food and Drug Adminis...ms currently used by manufacturers.” “In light of this fast-rising commercialization, FDA needs to make certain that it has the tools, resources and inform...

One species, many genomes

...stantially different from the laboratory strain of this small mustard plant, a favorite of many plant biol...h a streamlined genome, as the scientists write in this week’s edition of Science magazine. Arabidopsis plants from different geographical origins differ...

Identified main genetic variants involved in response to HIV

...atients infected by HIV, and is the first study of this kind in the field of infectious disease. Catalan p...Further study of other genetic regions involved in this process is needed. Nevertheless, HLA-B variation presents the highest correlation with the immune re...

Common cancer gene sends death order to tiny killer

...cine to put miR-34a into colon cancer cells. Doing this killed cells that contained p53, but fewer were ki...lled in cells lacking p53, further suggesting that this microRNA gets its kill orders from p53. When researchers examined pancreatic cancer cells known t...

Research identifies protein that signals flowering in squash plants

...urbit plant species (squashes). The strength of this research lies in the nature of the experimental sy...n through the phloem stream have been developed in this system. However, most cucurbits are day-neutral plants, and to investigate the nature of the florige...

Cellular message movement captured on video

...embled and disassembled, and they hypothesize that this process enables cell migration by assembling new focal adhesion sites in the direction of cell movement and disassembling them on the trailing side of the cell. Researchers are applying the fluorescence-labeling technique to the many other signaling ...

Researchers discover inherited mutation for leukemia

...a grandson and a distant female relative developed this form of leukemia. The chemical change is called DNA methylation. Healthy cells use this process to silence unneeded genes. But abnormal DNA methylation can turn off genes that control cell...

Agent slows aging in mice

...n female mice. The scientists can’t explain why at 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 h...

Enzyme delivered in smaller package protects cells from radiation damage

... to cells. "Because we now can deliver MnSOD in this very small vector, we will be able to get this radioprotective enzyme more efficiently into all of the cells of the body and give patients receivin...

Cells re-energize to come back from the brink of death

...rug that disrupts a cancer cell’s ability to block this backup program would allow that program to kill th...less toxic than standard chemotherapy. A report on this work is in the June 1 issue of “Cell.” Apoptosis is triggered by a variety of factors, including ...

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

...cancer was to surgically remove the tumor. Because this treatment can severely impair a patient’s quality ...way to predict which patients will respond well to this treatment or whether a tumor will return later. Clinical exams, X-rays, and magnetic resonance imagi...

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

...llergens to which the mother has been exposed, and this may have an effect on the development of allergic ...ema 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 ...

Liver cancer patients with high serum levels of hepatitis B virus face poorer outcomes

...al in HCC patients with chronic HBV infection, and this association is independent of an individual’s hepatic reserve, tumor and clinical factors,” the authors report. Though the study was limited by a small patient cohort, and the fact that all had advanced disease, the authors concluded, “Based on t...

Math that powers spam filters used to understand how brain learns to move our muscles

...cting brain-body muscle links. In their report this week in Nature Neuroscience, the team says their n...ts of the monkeys almost perfectly. “We found that this Bayesian model can explain almost all of the phenomena we observe in regard to learning motor moveme...

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

...t some repetitive regions of DNA (not exam-ined in this study) are associated with genes. “It stands t...ay they’ll quit smoking after their child is born, this represents a good reason to quit well in advance of trying to conceive.” Among the next steps in ...

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