Super fruit fly may lead to healthier humans
...ill may get something out of the deal. As reported online in Nature Chemical Biology, the discovery that a single protein caninhibit aging holds implications for human longevity and for treatment ofsome of the worlds most feared diseases. This work is important for two reasons, said study author Richard R...Ancient DNA traces the woolly mammoth's disappearance
...e giants, according to a June 7th report published online in Current Biology, a publication of Cell Press. DNA lifted from the bones, teeth, and tusks of the extinct mammoths revealed a genetic signature of a range expansion after the last interglacial period. After the mammoths migration, the population ...Satellite images show destroyed and threatened villages in Darfur
...ps is helping Amnesty International USA with a new online effort to monitor threatened settlements in the wa...n-Arab Africans who live in the region. The new online monitoring program, which Amnesty International officials hope will increase pressure on Sudanese Pr...Pesticides choke pathway for nature to produce nitrogen for crops
...gnificantly delayed growth. In a paper appearing online this week ahead of the regular publication by the Proceedings of the National Academy of Sciences (PNAS), the five-member team reports that agrichemicals bind to and block connections to specific receptors (NodD) inside rhizobia bacteria living in ro...Caribbean frogs started with a single, ancient voyage on a raft from South America
...al Academy of Sciences and posted in the journal's online early edition this week. Similarly, the scientists found that the Central American relatives of these Caribbean amphibians also arose from a single species that arrived by raft from South America. "This discovery is surprising because no previous ...Crucial progress in understanding Fragile X mental retardation protein
...etardation. The findings, published in the early online edition of the June Proceedings of the National Academy of Sciences, also have implications for autism, which shares a common physiological pathway with FXS. Fragile X syndrome is mainly caused by a mutation in the FMR1 gene on the X chromosome, l...Blocking beta1-integrin to treat cancer
...o cancer treatment, according to a paper published online in The EMBO Journalthis week. Blocking the action of this protein could help to prevent the formation ofmetastases by reducing tumour cell proliferation and inducing cell senescence. Integrins are a family of transmembrane receptors that help maint...Reprogrammed fibroblasts identical to embryonic stem cells
...nisch, senior author of the paper that will appear online June 6 in Nature. Whats more, these reprogrammed skin cells can give rise to live mice, contributing to every kind of tissue type, and can even be transmitted via germ cells (sperm or eggs) to succeeding generations. Germline transmission is the f...Nitrate in Lake Superior: On the rise
...he National Science Foundation (NSF), is published online this week in the journal Geophysical Research Letters. The complexity of the causes underlying the increase makes it difficult to predict when the water could become unhealthy. The trend is a concern because Lake Superior contains 10 percent of the...Simulations unravel outer membrane transport mechanism
...laborator from the University of Virginia, appears online in the Biophysical Journal and was described in the May 25 edition of Science. Transporting large molecules, such as vitamin B12, citric acid or other vital nutrients across the outer membranes of Gram-negative bacteria is not a simple task. The ce...Stanford researchers find stem cells in colorectal tumors
...D. The discovery is reported in the June 4 advance online edition of the Proceedings of the National Academy of Sciences. "This work will enable us to better understand how to identify these cells, and to do molecular studies to find potential new therapies," said Clarke, the senior author of the paper an...Researchers track how spores break out of dormant state
...ory scientists, appears in the May 28-June 1 early online edition of the Proceedings of the National Academy of Sciences. The research appears in this weeks (June 4) issue of PNAS. A thorough understanding of spore germination is important for the development of new countermeasures that identify the earli...An apple peel a day might keep cancer at bay
...cology and is senior author of the study, which is online and published this month in the Journal of Agricultural and Food Chemistry. In previous Cornell studies, apples had been found not only to fight cancer cells in the laboratory but also to reduce the number and size of mammary tumors in rats. The Corn...Gene expression patterns predict rapid decline in idiopathic pulmonary fibrosis patients
...ording to a new study being published today in the online journal PLoS ONE, a subset of patients with a specific genetic profile has a much more rapid progression to complete pulmonary failure and death without a lung transplant. Based on observations in the clinic that some IPF patients display a more ra...For many insects, winter survival is in the genes
...e researchers report their findings in the current online early edition of the Proceedings of the National Academy of Sciences. Insects and other animals, including humans, produce heat-shock proteins in response to extremely high temperatures. The proteins are so named because they were initially discove...First confirmed common genetic risk factors for breast cancer
...als risk for breast cancer. In a paper published online today in the journal Nature, the international team of scientists who conducted the genome-wide association study report that these five genes code for proteins crucial to biological activities that previously had not been implicated as triggers of b...Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin
... of the medical journal Cell Proliferation, posted online this week. Their paper calls it "the first demonstration that human umbilical cord blood-derived stem cells can be engineered" to synthesize insulin. "This discovery tells us that we have the potential to produce insulin from adult stem cells to he...News tips from ACS Chemical Biology
...cal Biology, are now available on EurekAlert!, the online science news service for reporters. Below is a link to the May 2007 edition. In the current issue we learn: That bacteria can communicate with each other through a process called quorum sensing. Through the use of a series small molecules th...Flexible genes allow ants to change destiny
... Hughes. Dr Hughes' research has been published online in Proceedings of the Royal Society B: Biological Sciences.......c scale of music, Purves said. The work appeared online May 24 in the Proceedings of the National Academy of Sciences. (Download at http://www.pnas.org/cgi/reprint/0703140104v1 ) Purves and co-authors Deborah Ross and Jonathan Choi tested their idea by recording native English and Mandarin Chinese spea...