New method for reading DNA sheds light on basis of cell identity
...They analyzed an assortment of chromatin proteins, each with a distinct chemical tag that switches genes either on or off. The scientists examined these proteins in mouse ES cells known for their unusual ability to form nearly any tissue as well as two other types of descendant cells that are more limit......There was at least one chronic alcoholic parent in each family. From birth, each subject presented predetermined beta-endorphin levels. However, children of this population group ag...Discovery could help bring down price of DNA sequencing
...letters of the genomic alphabet are A, T, G and C, each representing one of the base nucleotides that make up DNA.) Using a theory based on classical hydrodynamics, a Northwestern University researcher now has explained the nature of the resistive force that determines the speed of the DNA as it moves ...Journal of Nuclear Medicine's impact grows, remains consistently high over past 5 years
...ions and has averaged about 256 published articles each year. Other journals listed with JNM in the top four are Seminars in Radiation Oncology, Neuroimage and Radiology. The Journal Citation Report also publishes an immediacy index for journals as an indicator of the speed with which citations to a spe...Loss of cell's 'antenna' linked to cancer's development
... to obesity, diabetes and high blood pressure. In each case, cells fail to appropriately detect growth-controlling signals and develop abnormally. Now, researchers are adding cancer to this list. Many cancers arise from defects in cellular signaling systems, and we think we have just identified a real...Autism theory put to the test with new technology
.... In Welshs set-up, two subjects sit across from each other wearing, liquid crystal goggles. They are told to reach for a lighted target in front of them. Welshs previous work has shown that if we see someone else touching an area, we are much slower to move there, but Welsh wanted to see how much of ......, it creeps upon us through multiple small steps - each one justified by 'necessity'." "Unless we are able to construct rapid and effective decision-making structures then there is a real danger of events being seized and controlled by an authoritarian military-environment elite," he says, "Unfortunatel...Support for chromosomal theory of cancer found in cancers' development of drug resistance
...ving increased attention among cancer researchers, each cancer is unique, and there is no magic bullet. ...gene disruptions such as breakage or translocation each time a cancer cell divides, providing an opportunity for it to develop resistance to many drugs. Gen...News tips from the Journal of Neuroscience
...es in the presynaptic plasma membrane. On average, each SV was connected to 1.5 other SVs. Synapsins have been considered to be the filaments that maintain SV in position at the active zone. However, in mice lacking three synapsins, SV position was unchanged, and filaments linking them together were still...University of Arizona launches major scientific research initiative at Biosphere 2
...ity, the researchers will build three hill slopes, each about 32 yards (30 meters) long and 22 yards (20 meters) wide, to test how water moves down, into and across the slopes. "Then we will introduce plants and ask how having life on a landscape changes the behavior of water, both in the air and in th...How fish punish 'queue jumpers'
...f the barnyard pecking order. Dr Wong found that each fish has a size difference of about 5 per cent from the one above and the one below it in the queue. If the difference in size decreases below this threshold, a challenge is on as the junior fish tries to jump the mating queue and the superior one r...Fine particulate matter from traffic may influence birth weight
...women. The model took into account the distance of each home from streets, the population density near the home as well as the fluctuations in the concentration of the air pollutants over time during the pregnancies. Using a detailed questionnaire, the study authors could disentangle the influence of ai...American Chemical Society's Weekly PressPac -- June 20, 2007
...of polymer, or plastic, materials that are trashed each year. Instead, recycling of certain plastics involves melting and reforming into plastic that is less pure than the original. Akio Kamimura and Shigehiro Yamamoto report invention of an efficient new method to depolymerize polyamide plastics whi...MIT researchers reverse symptoms in mice of leading inherited cause of mental retardation
...r numbers of dendritic spines in their brains, but each spine is longer and thinner, and transmits weaker electric signals, than those in non-affected individuals. When the enzymatic activity of PAK was inhibited in the FXS mice, abnormalities in their spine number and structure-as well as the weaker elec...St. Jude study shows genes play an unexpected role in their own activation
...eurotransmitters. The St. Jude team showed that each gene that responds to CREB chooses which co-factor...fferent tools to turn on different genes; and that each gene determines which set of co-factor tools from CREBs toolbox it will respond to. In order to a...The BBVA Foundation commits 2.4 million euros to research in Ecology and Conservation Biology
... distances and can cover thousand of kilometers in each annual cycle between their breeding and their wintering areas. This makes them highly vulnerable to changing climatic conditions in different zones: with 48% of the worlds known populations suffering decline. And there are reasons to fear that the tr...New compound effectively treats fungal infections
... synthetases that attach the correct amino acid to each tRNA. Some of these enzymes have two main functional parts, or active sites: a site that links the amino acid to the tRNA, and a separate editing site that proofreads this process and removes wrongly added amino acids. To find out how exactly AN2690 ...18-year-old Singaporean student to present stem cell research paper at conferences in US and UK
...er Awards competition. At specified times during each conference program, Nicholas will speak about his research paper, titled, Towards A Serum-Free Medium: Growth Receptors And Signaling Pathways That Regulate Multipotency In Human Mesenchymal Stem Cells." He will describe the results of a prelimina...2 MSU professors spearhead international water project
...lace. The teams strength, said Tarabara, is that each institution brings something unique to the table. For example, research to develop stronger hollow fiber membranes will unite the world-renowned expertise in carbon nanotube chemistry at Rice University with the knowledge of hollow fiber membrane m......the approximately 8 billion tons of carbon emitted each year, about 40 percent accumulates in the atmosphere and about 30 percent is absorbed by the oceans. Scientists believe that terrestrial ecosystems, especially trees, take up the remainder. To find this terrestrial carbon sink, scientists have turn...