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Mutational in Medical News

Tiny sacs released by brain tumor cells carry information that may guide treatment

... that the effects of some anticancer drugs depend on a tumor's genetic mutational profile, so our results have broad implications for personalized ... who is an instructor in Neurology at Harvard Medical School. "Detecting mutational profiles through a noninvasive blood test could allow us to monitor how a ...

Quest Diagnostics Discovers New Genetic Mutations Affecting Cystic Fibrosis Screening

... how the widespread and thoughtful experience with [cystic fibrosis] mutation testing and screening continues to reveal new insights about the mutational alleles of the CFTR gene and further refinements in how best to detect them and assure appropriate quality control while doing so," said Wayne W. ...

First noninvasive technique to accurately predict mutations in human brain tumors

... evolving to a point where mutations can facilitate care, so a more accurate diagnosis and treatment course can be better planned by identifying the mutational status of the tumor," says O'Rourke. EGFRvIII is an area of intense interest in the field of cancer, being associated with more aggressive ....

Resistance to Tamiflu Growing

... when they get more virulent," explained Dr. Len Horovitz, a pulmonary specialist with Lenox Hill Hospital in New York City. "These are natural mutational shifts and drifts, not a result of the overuse of [Tamiflu]. Just because it's becoming more resistant does not mean that it's a more deadly virus." ...

Researchers crack the code of the common cold

... from a large number of patients, it is likely that hotspots for mutation or recombination will become apparent, and other regions resistant to mutational change may emerge. This will provide clues as to how flexible the virus is as it responds to the human environment, important hints if you are ...

ANA and ISONG Co-Publish Genetics and Ethics in Health Care: New Questions in the Age of Genomic Health

... of Genetics and Genomics in Health Care discusses selected applications of genetic and genomic technologies with current widely available mutational testing that affect children and those with known risks of cancer, Huntington Disease, cystic fibrosis, with clear implications for other similar ...

Twenty New Abstracts on Oral Xeloda(R) (capecitabine) Featured at the 31st San Antonio Breast Cancer Symposium

... gemcitabine in women with metastatic breast cancer (Lead Author: Michael Lee) -- Dec. 14, 7:00 to 9:00 a.m., [Poster No. 6047], p53 mutational status, but not immunohistochemical staining (IHC), is associated with a clinical response of the primary tumor in women receiving ...

Finding Points to Possible Blood Test for Brain Tumors

... he found that he could obtain a sort of molecular snapshot of the tumor. "By analyzing the RNA in these serum exosomes, we could determine the mutational profile in the tumor without doing a biopsy," explained Skog. "So, this is an enabling technology to look at what's going on inside the tumor at a ...

Get the latest on premier science in medical oncology

... skills: Lessons derived from microanalytical studies Advances in soft tissue sarcoma, GIST and beyond GIST the role of adjuvant therapy and mutational analysis in treatment decision-making Molecular biology and targeted therapy of sarcomas Hyperthermia improves local control of STS where next? ...

New research on mutation in yeast can enhance understanding of human diseases

... of mutation by using a new generation of sequencing technology that let them sequence the entire genome of each yeast strain and to identify the rare mutational events that have taken place. This way, the yeast accumulate mutations that might otherwise make them "bad yeast" the weak survive and look for ...
Mutational in Medical Technology

Vectibix(R) in Combination With Chemotherapy Significantly Improved Progression-Free Survival in First-Line Metastatic Colorectal Cancer

... executive vice president of Research and Development at Amgen. "These are the first prospective Phase 3 data to demonstrate the utility of KRAS mutational analysis as a predictive biomarker." Overall, the adverse event profile was as anticipated for an anti-EGFR antibody in combination with ...

ARUP Laboratories Applauds FDA's Decision on the Value of KRAS-Mutation Testing in Colorectal Cancer

... patient treatment and decrease health care expenses. ARUP's technical bulletin, " KRAS Mutation Detection in Colorectal Cancer; For Determining mutational Status that Confers Resistance to Anti-EGFR Therapy ," elaborates on this testing and can be found at www.aruplab.com. "In the United States, ...

Early Data Show Potential for Imatinib Mesylate Tablets to Treat Life-Threatening Form of Pulmonary Artery Disease

... factor receptor) gene rearrangements; adult patients with aggressive systemic mastocytosis (ASM) without the D816V c-KIT mutation or with c-KIT mutational status unknown; adult patients with hypereosinophilic syndrome (HES) and/or chronic eosinophilic leukemia (CEL) who have the FIP1L1-PDGFRa ...

Transgenomic Establishes Collaboration With the National Cancer Institute to Investigate Mitochondrial Genome and Associated Nuclear Genes in Cancer Cell Lines

... Board: TBIO), a global genetic analysis and services company, today announced the National Cancer Institute had approved a proposal to perform mutational analysis and sequencing of the mitochondrial genes in the NCI 60 cancer cell line panel. Mitochondrial damage is increasingly recognized as an ...

Exelixis Initiates Phase 1/2 Trial of XL184 in Patients With Non-Small Cell Lung Cancer

... to receive XL184 at the MTD alone or in combination with erlotinib. Additionally, correlative studies will evaluate MET amplification and EGFR mutational status. MET and EGFR signaling activity will be assessed in tumor and surrogate tissue. Data from an ongoing phase 1 trial of XL184 in patients ...

Exelixis Presents Encouraging Phase 1 Data For XL019, A Novel Selective Inhibitor of JAK2

... JAK2 plays a pivotal role in the cellular response to growth factors that drive blood cell expansion, including erythropoietin and thrombopoietin. mutational activation of JAK2 is observed in the majority of patients with polycythemia vera, essential thrombocythemia and myelofibrosis, and is thought to ...

Updated Phase 1 Data for Exelixis' XL184 Demonstrate Pharmacodynamic and Clinical Anti-Tumor Activity

... partial responses in patients with medullary thyroid cancer and tumor shrinkage in a patient with papillary renal cell cancer, which frequently have mutational activation or overexpression of RET or MET, respectively," said George A. Scangos, Ph.D., president and chief executive officer of Exelixis. "We ...
Mutational in Biological News

SEX4, starch and phosphorylation

... well understood. With new information emerging from genome sequencing and mutational analyses, we are beginning to gain a better understanding of these complex ... Society of Plant Biologists in Mrida, Mexico (June 27, 2:30 PM). mutational and structural analyses by Dr. Zeeman and his colleagues have revealed ...

UCSB researchers discover the dawn of animal vision

... only a handful of cases where scientists have documented the very specific mutational events that have given rise to new features during evolution. Oakley ... that such claims are simply wrong. We show very clearly that specific mutational changes in a particular duplicated gene (opsin) allowed the new genes to ...

Two new studies on circadian rhythms

... proteins to track and correlate changes in the core circadian network. They determined the clusters and locations of known sites, and through mutational analysis identified novel functional domains to create a dynamic view of a clock protein in action. ...

Cystic fibrosis testing -- next steps

... how the widespread and thoughtful experience with [cystic fibrosis] mutation testing and screening continues to reveal new insights about the mutational alleles of the CFTR gene and further refinements in how best to detect them and assure appropriate quality control while doing so." ...

Evolution follows few of the possible paths to antibiotic resistance

... evolution follows very few of the available mutational pathways to attain fitter proteins, researchers ... work indicates that of 120 harrowing, five-step mutational paths that theoretically could grant antibiotic ... property of DNA is that very many distinct mutational paths link any two variants of a gene," says lead ...

Harmless virus may hold key to more effective HIV drug discovery

... the bacteriophage can model millions of different mutational variants of an HIV protein called Nef. Knowing ... was then coaxed into synthesizing the millions of mutational variants of Nef. The researchers then targeted ... that could target the entire population of Nef mutational variants. The results suggest chemically simpler, ...

Key brain regulatory gene shows evolution in humans

... baboons, pig-tailed macaques and rhesus monkeys. They found significant mutational changes in the regulatory sequence leading to humans that indicated ... in which sequences near the regulatory segment showed greater mutational change -- as if they were "dragged along" with the evolving regulatory ...

Scientists discover a genetic code for organizing DNA within the nucleus

... humans. Several diseases, such as cancer, are typically accompanied or caused by mutations in the DNA and the way it organizes into chromosomes. Such mutational processes may be influenced by the relative accessibility of the DNA to various proteins and by the organization of the DNA in the cell nucleus. ...

Researchers identify genes in fruitflies that may shed light on human cancer spread

... Whole genome studies, like the microarray analysis used in this study, allow researchers to identify genes that share similar functions in a way that mutational analysis cannot. And, whole genome approaches can look at most of the genes in the genome at one time. As part of their previous work, Montell's ...

Housecat-sized Siberian tiger cubs get collared

... in prostate cancer susceptibility. "Because of the strong similarity among genes in this region, we had to develop a new technique for our mutational analysis, which we call TAR cloning," explains Larionov. "Using this method, we isolated the SPANX region from 200 individuals by recombination in ...

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Mutational in Biological Technology

Gleevec Receives FDA Priority Review as First Therapy to Reduce Recurrence of Gastrointestinal Stromal Tumors After Surgery

... factor receptor) gene rearrangements; adult patients with aggressive systemic mastocytosis (ASM) without the D816V c-KIT mutation or with c-KIT mutational status unknown; adult patients with hypereosinophilic syndrome (HES) and/or chronic eosinophilic leukemia (CEL) who have the FIP1L1- PDGFR alpha ...

Tissue Specificity for Mutation Parallels Tissue Specificity for Cancer

... the well-characterized bacterial lacI gene as a mutational target gene. The lacI gene, part of ... number of mutants have been sequenced, a mutational spectrum results. Mutational spectra are ... the mutants revealed a unique difference in mutational spectrum: The spectrum from the liver was ...

Randomize Gene Sequences with New PCR Mutagenesis Kit

... PCR mutagenesis kit produces a unique mutational spectrum ... mutations with minimal bias, and its mutational spectrum is distinct from that of Taq ... in studies employing lacZ as the mutational target gene. A 650-bp DNA fragment containing a ...

A Positive Selection Assay for Mutation Analysis in Big Blue Animals

... now offers an alternative way to perform mutational analysis in the Big Blue transgenic rodent ... studying tissue-specific mutant frequencies and mutational spectra. figure 1 ... l LIZ shuttle vector, functions as a mutational test sequence. Rescued shuttle vector ...

Organize Your Data from the Big Blue Mutation Assay

... The report compares mutant frequencies from two treatment groups. mutational events are assessed using the Mutational Spectrum Report, which tabulates mutational spectra based on the occurrence of each mutation type. Specialized ...

Cytosolic expression of Green Fluorescent Protein (GFP) and its derivatives in the yeast Saccharomyces cerevisiae: Detection in vivo using the Varian Cary Eclipse

... Gerdes and Kaether 2 ). Since then, a rapidly increasing variety of applications for GFP and its derivatives have been developed. mutational studies of the chromophore and surrounding amino acids have produced new GFPs with altered excitation and emission spectra. ...

Detection of Mutations in the CYP21 Gene Using the DCode System

... deficiency, Hum. Mutat., 5 , 12630 (1995). 3. Wedell, A., Thilen, A., Ritzen, E. M., Stengler, B., and Luthman, H., mutational spectrum of the steroid 21-hydroxylase gene in Sweden: implications for genetic diagnosis and association with disease manifestation, ...

Transfection Reagent Selector Kit Handbook

... eukaryotic cells has become a powerful tool for the study and control of gene expression, e.g. for biochemical characterization, mutational analyses, or investigation of the effects of regulatory elements or cell growth behavior. Two principally different transfection ...

Mx4000 Multiplex Quantitative PCR System*,PPP

... price. Real-time quantitative PCR (QPCR) allows researchers to quickly and easily quantify nucleic acids for studying gene expression, mutational analysis, disease state, and gene dosage. QPCR measures PCR product accumulation during the exponential phase of the reaction using fluorescence ...

Map and Link Human Genetic Disorders with SSLP Analysis

... the rapid identification of new disease genes. Recognition of the heterogeneity of genetic diseases, the allelic nature of certain disorders, and mutational heterogeneity in the cause of genetic conditions may ultimately lead to understanding the relationship between phenotype and gene. Simple ...

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Mutational in Biological Definition

Mutational meltdown

... mutational meltdown refers to the process by which a small ... deleterious mutations. A population experiencing mutational meltdown is trapped in a downward spiral and will ... Lynch, and R. Burger (1993). Muller's Ratchet and mutational meltdowns. Evolution 47: 1744-1757. M. ...

Population genetics

... effect Genotype-phenotype distinction Hardy-Weinberg principle Microevolution Molecular evolution Muller's ratchet mutational meltdown Population bottleneck Selection Small population size Ewens's sampling formula References J. Beatty. 1986. ...
Mutational in Biological Dictionary

Transposon

... -free regions (TFRs) are prominent genomic ... Alternatively, transposon insertion into functional DNA can be deleterious as is ... As mutational agents, much of transposon impact may be deleterious to their ... Historically, transposon discovery and analysis have been primarily conducted .....

Tet resistance

... ... PTK 0796 overcomes tet resistance mechanisms in gram-positive bacteria as ... status of tet susceptibility of the test organisms, mutational resistance to PTK ... Producers: otrA - otrB - otrC - tcr3 (trcC) - tet ... Bacterial resistance to tetracycline: mechanisms, transfer, and ...

Somatic hypermutation

... antigen receptor genes. ... to evolution immune somatic - hypermutation by tomhebbron on 2008 ... Somatic hypermutation is a regulated mutational process that introduces base ... As a result of somatic hypermutation and selection, Ab affinity for Ag increases ... Although some ...

Codon Bias

... preferred codons is weak only when codon bias approaches equilibrium ... Synonymous codon usage bias is deter- mined by a combination of mutational biases, selec ... method for estimating levels of codon bias and de ... A codon bias space, where genomes are identified by their ...
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(Date:8/29/2014)... been known about what genetic changes transform wild animals ... of whom is a University of Montana assistant professor, ... the development of the brain and the nervous system ... published Aug. 28 in Science and gives ... http://www.sciencemag.org/ ., The domestication of animals and plants, ...
(Date:8/29/2014)... and number of connections in transcription factor networks (TFNs) ... a study published in PLOS Computational Biology ... signature contributes to a network,s resilience against mutations. ... assortativity of TFN models has a greater effect on ... of assortativity," said Dov A. Pechenick, PhD, lead author ...
(Date:8/29/2014)... marine phytoplankton, such as the prolific bloomer Emiliania ... researchers have discovered. The finding contradicts the common view ... microbes depend on scarce supplies of thiamine in the ... to think about the ocean," says CIFAR Senior Fellow ... Journal paper with CIFAR fellows John Archibald ...
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