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Tag: "systematic" at biology news

Genes involved in cell growth and cell division identified

...ntributors to cancer, have been mapped in a single systematic study. The group led by Professor Jussi Taipale (...s contributing to cell growth and cell division by systematic silencing of most of the genes in the fruit fly, Drosophila melanogaster. The results are published ...

Low-cost drug gaining favor for use in HIV-infected children in poor countries

A new systematic review highlights strong results from a single study at the center of mounting support for worldwide use of the low-cost drug Bactrim to help HIV-infected children in poor countries. The reviewers surveyed medical literature on the preventive use of...

MIT: Oceans are a major gene swap-meet for plankton

...tell us what is most important to them" by doing a systematic survey of relative abundances among six different types, or clades, of Prochlorococcus across vast environmental gradients in the oceans, Chisholm said. "We found first that two clades are orders of magnitude more abundant than all of the rest, and t...

New method enables gene disruption in destructive fungal pathogen

...ystem described in this study should allow for the systematic analysis of large sets of candidate genes in A. brassicicola, such as those encoding cell-wall-degrading enzymes and other genes of interest in pathogen-plant interactions." The new gene disruption method may also find applications in the study of f...

Chocolate, wine, spicy foods may be OK for heartburn, Stanford study finds

...and Seth Crockett, MD - published the results of a systematic survey they conducted of more than 2,000 studies published worldwide on heartburn, also known as acid reflux or GERD (gastroesophageal reflux disease), between 1975 and 2004. They found 100 studies looking at lifestyle factors thought to be associate...

Stanford snake venom study shows that certain cells may eliminate poison

...," said Galli. Galli and Metz are embarking on a systematic survey of animal venoms. As more is learned about the natural defenses the mammalian immune system has against venom, it may someday even lead to better antivenins, though it will first have to be shown that human mast cells respond in the same way m...

Carnegie Mellon researchers discover key deficiencies in brains of people with autism

... Mother Nature provided. We now have evidence of a systematic relation between the properties of the brain and the properties of the thinking in autism," said Just, the D.O. Hebb Professor of Psychology at Carnegie Mellon. ...

Hopkins scientists show hallucinogen in mushrooms creates universal 'mystical' experience

...rector, Charles Schuster, the research marks a new systematic approach to studying certain hallucinogenic compounds that, in the 1950s, showed signs of therapeutic potential or value in research into the nature of consciousness and sensory perception. "Human consciousness…is a function of the ebb and flow of n...

Researchers find protein that silences genes

...t May 15, Pikaard and his collaborators describe a systematic effort to examine the 16 predicted histone deacetylases in the genome to see if any play a role in nucleolar dominance. They made transgenic hybrids in which each of the deacetylases were knocked out one by one and then examined the plants to see if...

New study finds similarities between monkey business and human business

Little attention has been paid to whether systematic economic biases such as risk-aversion are learned behaviors ?and thus easily ameliorated through market incentives ?or biologically based, arising in novel situations and in spite of experience. In a groundbreaking new study from the Journal of Polit...

Scientists use gene signatures to match cancer and other diseases with potentially effective drugs

...d other collaborating centers have unveiled a new, systematic approach to drug discovery that matches diseases with potential treatments using a universal language based on cells' distinctive gene activity profiles, or "signatures." A set of three articles being published in the September 29 issue of Science...

Test reveals effectiveness of potential Huntington's disease drugs

... some symptoms. "Our results provide the first systematic comparison of various clinically relevant glutamate pathway inhibitors for HD treatment and indicate that memantine holds the most promise based on its in vitro efficacy," Dr. Bezprozvanny said. "Whole animal studies of memantine in an HD mouse mode...

Key gene controlling eye lens development identified

...to a series of biochemical signals. Following this systematic approach, the St. Jude team demonstrated that Six3 plays its important role in the PLE. The investigators also showed that a key consequence of removing Six3 during early development is that the PLE fails to undergo its normal thickening, an initial ...

Cougar predation key to ecosystem health

...s and lead author on the study. Researchers did a systematic survey of channel dimensions, streambank condition, vegetation and species presence along each study site. "These two canyons, almost side by side, have a similar climate and their ecosystems should be quite similar," Ripple said. "But instead they...

Recurrence of a flu pandemic similar to infamous 1918 flu could kill 62 million

...This is the first time there has been this sort of systematic analysis based on vital statistics, such as death registration data, from the 1918-1920 period," said lead author Christopher Murray, Professor of Population Policy at HSPH and Director of the Harvard Initiative for Global Health. "These findings are...

Study offers innovative profile of enzyme that aids tumor growth

...ture and function of proteins-and metabolomics-the systematic study of cellular processes, specifically their small-molecule metabolite profiles-to begin to decipher the complex metabolic and signaling networks of cancer. According to the study, one of the primary advantages of the functional proteomic tech...

Study: Living coral reefs provide better protection from tsunami waves

...s Kunkel's senior thesis project, was to provide a systematic framework by which to examine the assumption that healthy reefs protect shorelines more effectively. "For our purposes, we assumed that the health of the reef would only be important in terms of the drag it exerted on the wave," said Kunkel, who i...

Climate experts search for answers in the oceans

... warming, ESA has backed two projects that provide systematic data on key oceanic variables ?color and temperature. The Medspiration project, aimed at charting sea-surface temperatures, and the GlobCOLOUR project, aimed at developing a data set of global ocean colour, both combine data measured independently b...

Genomics throws species definition in question for microbes

...eveloped. The need for more comprehensive and systematic data to uncover whether microorganisms are organized into robust, definable, biologically meaningful clusters that adhere to the concept of species. The acquisition of draft-quality genome sequences for all type strains to help advance the integ...

Chimpanzees found to use tools to hunt mammalian prey

... tool-crafting and associated hunting behavior was systematic and consistent, suggesting that it was habitual. The hunting behavior included forceful jabbing motions into branch or trunk hollows, and chimpanzees were seen to subsequently open the hollows by breaking wood off from a distance, suggesting that the...

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