Aggression-related gene weakens brain's impulse control circuits
...ted, or L, version, contains a different number of repeating sequences in its genetic code than the other version (H), likely resulting in lower enzyme activity and hence higher levels of serotonin. These, in turn, influence how the brain gets wired during development. The variations may have more impact on ma...APS lecturer shows rare video of 'teacher-student' immune cell interactions in live animal
...mph node. T cells and B cells can live for months, repeating this process and then passing the information on to their successors. The interaction between T cells and dendritic cells in the lymph node changes over time, von Andrian said. "It's nice that the T cell learns to recognize the antigen, but that does...Soft materials buckle up for measurement
...he sensor film to buckle, resulting in patterns of repeating ridge-like features, akin to corrugated cardboard. The ridge spacing is related to the modulus ratio between the film and the soft substrate. Since the mechanical properties of the sensor film was known, the researchers could calculate the stiffness ...New genetic findings add to understanding of OCD
... anxiety and disturbing thoughts that they ease by repeating certain behaviors. In fact, close relatives of people with OCD are up to nine times more likely to develop OCD themselves. Now, new research is shedding new light on one of the genetic factors that may contribute to that pattern. And while no one g...Kids with OCD bullied more than others, study shows
...of Mental Health. "Their day becomes filled with repeating behaviors," Storch said. "For a lot of kids, peers...se why they are washing their hands. Why they keep repeating questions." The researchers also found links between bullying and other problems, namely lonelines...USC groups present at Neuroscience 2006
...musical versions of "T-patterns": highly unlikely, repeating combinations of specific notes separated by a constant time interval. In addition to Mozart, the composers were Alexander Scriabin, known for his manic-depressive tendencies; Robert Schumann, almost certainly schizophrenic; and Johann Sebastian Ba...Scientists identify 36 genes, 100 neuropeptides in honey bee brains
...ecause genes that produce neuropeptides often have repeating sequences, some of the genes were found by a computer algorithm that scanned the honey bee genome for such telltale sequences. "We found 36 genes, from which we detected 100 peptides by mass spectrometry," said Sweedler, who also is a researcher at t...Scientists find new way to manipulate DNA
...--Polymers, large molecules comprised of chains of repeating structures, are used in everything from the coatings on walls of ships and pipes to reduce flow drag to gene therapy. But long polymer chains are subject to breakage, called scission, and a new study by the University of Michigan shows that as it...Regulating the nuclear architecture of the cell
... of extrachromosomal DNA, typically small loops of repeating sequences, in cell nuclei. This observation led Karpen and Peng to propose a specific mechanism by which H3K9 methylation and RNAi pathways regulate nuclear organization. When the H3K9 methylation pathway is functioning properly, heterochromatin r...Scientists crack the genome of the parasite causing trichomoniasis
...like a jigsaw puzzle. Because Trichomonas has many repeating sequences, the computer algorithm got completely stuck. It could not assemble the contigs. So the scientists were stumped. They first assured themselves their work wasn't in error and that they indeed were sequencing Trichomonas. "That made a kind o...TIGR researchers reveal tricks of common sexually transmitted infection
...w drugs and new diagnostic techniques and identify repeating sequences that can be used for epidemiology and population studies. T. vaginalis has the largest genome so far identified in a eukaryotic parasite, an estimated 160 Mb and more predicted genes than the human genome. The researchers speculate that ...Applied scientists create wrinkled 'skin' on polymers
...patterns, and long horizontal channels akin to the repeating tines of a closed zipper. "Irradiation by the ion beam alters the chemical composition of the polymer close to its surface and forms a thin stiff skin which wants to expand," explains Vaziri. "The consequent mismatch between the mechanical strain o...UCLA and NYU microbiologists crack genome of a parasite that causes a common STD
...ke a jigsaw puzzle. Because Trichomonas has many repeating sequences, the computer algorithm got completely stuck. It could not assemble the contigs. The scientists were stumped. Only after bioinformatics experts and software engineers, including colleagues Steven Salzberg, Arthur Delcher and Michael Schatz ...MIT: Nanocomposities yield strong, stretchy fibers
... plastic consists of long chains composed of small repeating molecular units). Numerous earlier unsuccessful attempts, tackling the same issue, relied on heating and mixing molten plastics with reinforcing agents, but Liff and Kumar took a different approach: They focused on reinforcing solutions of a commerc...African-Americans at increased risk for earlier preterm births
...rs were also more than 5 times more likely to have repeating premature births than Caucasian mothers. Although all mothers who had initially delivered a premature infant at 20-34 weeks of gestation were more likely to do so again, the rate for Caucasian women was 9.2% and the rate for African American women wa...Medieval Islamic designs reveal breakthrough in tiled pattern-making
...or 36 degrees. These symmetries are "forbidden" in repeating patterns. For example, it's impossible to fit pentagonal tiles side-by-side on a floor; there will always be gaps in between. Before the Science study, Lu, a PhD candidate in physics, had collaborated with Steinhardt, himself a cosmologist, to lo...Life cycle assessment essential to nanotech commercial development
...ck of toxicity data specific to nanomaterials is a repeating theme in this and in other studies related to nanotech environmental, health, and safety concerns, says Andrew Maynard, chief scientist for the Project on Emerging Nanotechnologies. Nanotechnology is no longer a scientific curiosity. Its products are......lled manner. Previous experiments had demonstrated repeating patterns lasting up to one second in duration. But when Lampl and his colleagues recorded the activity of neurons in the brain region known as the cortex in anaesthetized rats and analyzed the data, they found no difference in the number of patter...Genetic roots of bipolar disorder revealed by first genome-wide study of illness
...sing on US participants of European ancestry, then repeating the study in a large group of patients in Germany. Similar outcomes were found in both populations, strengthening the validity of the results. A subsequent study is examining whether the results apply to other populations, and will look for common ...UCLA molecular biologists convert protein sequences into classical music
...urological disorder. An untrained ear can hear the repeating chords. "We believe this can be a tremendous teaching tool to get children, non-scientists and the visually impaired interested in proteins and molecular biology," Miller said. "When I was a kid, I listened to 'Peter and the Wolf,' which was a fabu...