analyses 2 7

Tag: "analyses" at biology news

Biased reporting found in cancer prognostic studies

...k cancer mortality weakened as they expanded their analyses from the 18 published and indexed studies alone to include the 13 studies with published data only. The association vanished after they added in the unpublished data from 11 studies. Additionally, 72% of 18 published meta-analyses on prognostic facto...

Space matters: Estimating species diversity in the fossil record

...that many fluctuations in diversity seen in fossil analyses actually arise from the species-area effect and are not actually the result of true changes in the distribution of species. Given the lack of uniform geographic sampling in paleontological data, the impact of this effect may be significant - and like...

Female volunteers prepare for a second 'bedrest'

...n either English or French. During the experiment, analyses and ultrasound tests will be carried out on the volunteers every day to prevent the risk of thrombosis. ...

Size matters: Preventing large mammal extinction

...the journal Science, the largest study of its kind analyses key factors linked to the extinction of mammals. "Conservation biologists have always known that large bodied mammals are at greater risk of extinction," comments Professor Georgina Mace of the IoZ, "Now we understand the mechanisms, we are able to ...

Arthritis: What Wnt wrong?

...kamura et al., "Expression profiles and functional analyses of Wnt-related genes in human joint disorders," ap...nt degenerative disease in humans. "More specific analyses such as gain-of-function and loss-of-function study of Wnt-7b will give us a clue which Wnt-7b would...

Deep thinking: Scientists sequence a cold-loving marine microbe

...ique to the cold-loving organism. Together, these analyses offer a picture of evolution in action, as C. psychrerythraea uses subtle tweaks in common bacterial biology to adapt to its chilly environs. For instance, the bacterium taps a group of four to five genes to generate polyunsaturated fatty acids and p...

High-powered gene profiles provide clues to genes involved in common form of lung cancer

...As part of the study, investigators did microarray analyses on the two major subtypes of NSCLC, adenocarcinoma and squamous cell carcinoma, and found that their genomic profiles overlap in every area but one: squamous cell carcinomas contain an area of gene amplification, or over-copying, not found in adenoca...

Amazon symposium to address large-scale conservation

...zon Basin region will depend upon (1) conservation analyses that describe the complex interactions among ecosystems, economies, and climate that will unfold into the future, (2) regional conservation planning processes that diminish the environmental destruction of frontier expansion along emerging highway co...

Researchers Find New Technique To Identify Fetal Genetic Material From Amniotic Fluid

...ent of the amniotic fluid is discarded after these analyses and is therefore available for research and future clinical applications." Paige B. Larrabee, M.D., from Tufts-New England Medical Center, Boston, and colleagues analyzed four samples of cell-free amniotic fluid from pregnant women between 20 and 32...

Scientists analyze chromosomes 2 and 4

...enome sequence in Nature. Detailed annotations and analyses have already been published for chromosomes 5, 6, 7, 9, 10, 13, 14, 16, 19, 20, 21, 22, X and Y. Publications describing the remaining chromosomes are forthcoming. The sequence of chromosomes 2 and 4, as well as the rest of the human genome sequence...

Owl genomics presents a HEPATOCHIP for diagnosis of non-alcoholic steatohepatitis

... Hospital in Alcalá de Henares (Madrid). This chip analyses the co-expression of 85 genes that are related with NASH and is about to be validated in collaboration with the Hepatology Service of Gregorio Marañón Hospital (Madrid). This HEPATOCHIP method determines the co-expression of genes in the liver tissu...

Mouse with designer liver has enhanced glucose tolerance, insulin response

...Gab1 protein. The Feng team conducted biochemical analyses on the LGKO mice, homing in on enzymatic pathways critical to insulin response in cells. Upon stimulation with insulin, they found an elevated level of Akt/PkB kinase, an enzyme needed for insulin signaling, and elevated activity of IRS proteins. The...

Scripps scientists find potential for catastrophic shifts in Pacific ecosystems

... behavior of the North Pacific have centered their analyses on "regime shifts," decades-long changes in which semi-stationary periods are followed by periods of rapid transition. Regimes and rapid shifts between regimes are features that arise from so-called "nonlinear" interactions (where mutual effects do m...

FDA Warns About Antipsychotic Drugs and Elderly

...atment reviewed by their health care providers. In analyses of seventeen placebo-controlled studies of four drugs in this class, the rate of death for those elderly patients with dementia was about 1.6 to 1.7 times that of placebo. Although the causes of death were varied, most seemed to be either heart-relat...

Doctors closer to using gene analysis to help trauma patients

...s wherever the tool is being used.?/p> Genomic analyses took place at UF, the Stanford Genome Technology Center and Washington University in St. Louis. Overall data analysis was based at Massachusetts General Hospital at Harvard Medical School. Specially trained clinical personnel sampled whole blood and...

Advancements In Genomics Foster Deep Sea Discoveries

...’s laboratory at Scripps. Bartlett’s past genetic analyses revealed a creature that can sense changes in pressure using a natural barometer-like mechanism, which adjusts the flexibility of its membranes to cope with different levels of pressure. “There’s a protein within the membrane that gets squeezed when...

Anammox bacteria produce nitrogen gas in oceans' snackbar

...ladder molecules), fluorescence microscopy and DNA analyses of water samples was used to proof the abundance of anammox bacteria in the Atlantic Ocean. The discovery of anammox bacteria in the open ocean has major consequences for our understanding of the global nitrogen cycle. Models of global nitrogen budge...

Different microarray systems more alike than previously thought

...nt, the results are far from identical. Additional analyses need to be done to determine whether seemingly minor remaining differences between platforms show a pattern that could affect a researchers' choice in consideration of cost versus performance in a given experiment. Additional studies can also include...

CoPub Mapper: mining MEDLINE based on search term co-publication

High throughput microarray analyses result in many differentially expressed genes that...e program. Receiver operator characteristics (ROC) analyses showed that most gene sets were clustered much better than expected by random chance. To test groupi...

Researchers make gains in understanding antibiotic resistance

...y crystallography to do high-resolution structural analyses of the large ribosomal subunits bound to a number ...of the Hma ribosome that do not agree with similar analyses by other researchers, according to Steitz. The studies by Steitz's group yielded new information abo...

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