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Tag: "variation" at biology news
Customized gene chip provides rapid detection of genetic changes in children's cancer
...ser light. This is a signal that a particular gene variation is present in the sample. "We can test DNA from peripheral blood and from the tumor, and we should see a loss of signal in the cancer," said Dr. Fortina. He noted that the researchers can simultaneously evaluate seven chromosomal regions known to be...MicroRNA gene that regulates lifespan found by Yale scientists
... the journal Science. "Although there is a large variation in lifespan from species to species, there are genetic aspects to the processes of development and aging," said Frank Slack , associate professor of Molecular, Cellular and Developmental Biology and senior author of the paper. "We used the simple,...Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality
... atmospheric pollution, which has a strong diurnal variation and thereby determine objectively the changing atmospheric composition." SCIAMACHY: surveying the world in six days SCIAMACHY is a spectrometer, and it works by measuring sunlight - either transmitted, reflected or scattered by the Earth's atmo...Scientists pinpoint inflammation gene
...teins accumulate in a cell. People with a genetic variation that impairs SEPS1' ability to purify the cells by...tified one particular variant in the SEPS1 gene a variation in the gene's promoter region, which regulates SEPS1 expression as the most important factor among ...Researchers quantify more noise in gene expression
...algorithms that identify the underlying sources of variation at the basic level of life: unscripted fluctuation... of "extrinsic noise," an even larger component of variation in gene expression. This second type of noise results because no two genetically identical cells can...'Perception' gene tracked humanity's evolution, scientists say
...prodynorphin gene. Past research has also observed variation in expression levels within humans. This report ...e prodynorphin after noticing an unusual amount of variation in the human version's promoter. The scientists decided to examine the prodynorphin gene in human be...Key brain regulatory gene shows evolution in humans
...ne that produces the prodynorphin protein shows no variation within humans, or even between humans and any of t...ho is a professor of biology. "So, if we found any variation in this gene due to evolution, it was likely to be in its regulation. And our premise is that the ea...Gene variation affects tamoxifen's benefit for breast cancer
...rsity of Michigan and the Mayo Clinic. The genetic variation affects the level of a crucial enzyme that activates tamoxifen to fight breast cancer. The study, co-led by researcher James Rae, Ph.D., at the University of Michigan Comprehensive Cancer Center and Matthew Goetz, M.D., an oncologist at the Mayo Cli...New methods offer insight into regulatory DNA
... a measure of just how important regulatory region variation might be in a pilot study based on some 2% of the ...ariations." The study combined the map of genetic variation developed through the HapMap with estimates of gene activity obtained from cell cultures from 60 ind...Scientists fetch useful information from dog genome publications
...use, rat, and several insect species." Phenotypic variation among dog breeds, whether it be in size, shape, or...rs, dog experts cover morphological and behavioral variation in dogs, their origins and domestication, and characteristics of their genome. Chapters are devoted ......use, rat, and several insect species." Phenotypic variation among dog breeds, whether it be in size, shape, or...rs, dog experts cover morphological and behavioral variation in dogs, their origins and domestication, and characteristics of their genome. Chapters are devoted ...New evidence questions the simple link between prion proteins and madcow disease
...ts have struggled to make sense of how an abnormal variation of a normal protein can trigger an infectious disease. Some are questioning whether this simple relationship exists at all. This paper adds new evidence that can inform the debate. Firstly, it is known that individual people and animals have differe...Cortex matures faster in youth with highest IQ
...s, the NIMH study sought to control for individual variation in brain structure by following the same 307 children and teens, ages 5-19, as they grew up. Most were scanned two or more times, at two-year intervals. The resulting scans were divided into three equal groups and analyzed based on IQ test scores: ...New discovery: Molecular variation in one gene affects the growth of natural populations
..., ecologists have been able to show that molecular variation in one gene may affect the growth of a population ...allenges previous views according to which allelic variation in populations, and possible consequent differences in individual performance, would be of no signi...Researchers map of genetic variations implicated in disease
...s for functional studies to understand the role of variation in MHC-associated disease. Autoimmune disease affects about 3 million people in the UK. The three haplotypes studied here display different susceptibilities to diseases such as type 1 diabetes, myasthenia gravis and multiple sclerosis. For some co...Feinstein researchers identify intelligence gene
...le our data suggests the dysbindin gene influences variation in human cognitive ability and intelligence, it only explained a small proportion of it -- about 3 percent. This supports a model involving multiple genetic and environmental influences on intelligence," said Anil Malhotra, MD, principal investigator...Genetic and environmental influences on alcohol consumption among rhesus monkeys
...th genetic and environmental factors contribute to variation in alcohol consumption among the non-human primate... investigated factors that may have contributed to variation in alcohol consumption among 156 monkeys during a period of 10 years when they were considered adole...Scientists discover interplay between genes and viruses in tiny ocean plankton
...l us that even the smallest organisms show genetic variation related to the environment in which they exist," said Philip Taylor, director of the National Science Foundation (NSF)'s biological oceanography program, which funded the research. In addition to NSF, support for the research came from the Gordon an...Ernst Mayr's theory illustrated in genetic epidemiology studies
...domness, and there is only a subset of the genetic variation of the ancestral population, and the frequencies of different kinds of genes can be changed dramatically. Mayr also believed that there is lots of interaction between genes, so that when the frequency of one gene changes randomly, that causes a diff...DNA conclusive yet still controversial, Carnegie Mellon professor says
...r finding associations between patterns of genetic variation and complex disease. ...Other Tagsbeans 2applied 2applied 3applied 4applied 5applied 6applied 7applied 8applied 9applied 10neurobiology 2skills 2skills 3skills 4Other Contentsbradycardiabradycardiaplexopathyaneurysmaneurysmaneurysmbranchialyouryouryouryouryouryouryouryouryour
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(Date:12/3/2009)In the 1980s, Harald zur Hausen and his co-workers discovered that specific types of human papillomavirus (HPV) cause cervical cancer. Scientists soon found out how these pathogens cause cells to dege
(Date:12/3/2009)PHILADELPHIA Now in its 32nd year, the CTRC-AACR San Antonio Breast Cancer Symposium continues to attract the best in breast cancer science and world leaders from industry and academia with the goal
(Date:12/3/2009)Forest dwellers must be included in the design of the upcoming forest deal at Copenhagen in order to avoid a humanitarian crisis, according to a scientist at the University of Leeds. , Writing today
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(Date:12/4/2009)Case Western Reserve University researchers, from the School of Medicine,s Department of Nutrition, discovered two new metabolic pathways by which products of lipid peroxidation and some drugs of abus
(Date:12/4/2009)Dental tourism is a phenomenon that was started by people that were looking for an alternative to the high price of dental work in the US, Canada, and other countries. In their search for lower priced
(Date:12/4/2009)Move a response to pressure from federal regulators to crack down on abuse of opioid medications , , FRIDAY, Dec. 4 (HealthDay News) -- The makers of 24 different prescription painkillers on F
(Date:12/4/2009)Research and surveillance urged for at-risk patient groups , , FRIDAY, Dec. 4 (HealthDay News) -- Some childhood cancers, particularly Ewing sarcomas and central nervous system tumors, carry t
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