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Achieving Great Science : Bringing Together Physical Measurements and Chemical Analysis
Michael Boruta, Michel Hachey

Many problems in analytical spectroscopy require insight from several different techniques to adequately resolve the problem. A common difficulty with using several techniques is often the ability to manage the various data types and making the data available for review, analysis and reporting.

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Rapid Metabolite Identification using Advanced Algorithms for Mass Spectral Interpretation
Mark A. Bayliss, Margaret Antler, Graham McGibbon, Vitaly Lashin

Recognizing differences between related LC/MS data sets is the basic premise for the determination of potential metabolites in drug development. Finding small differences between two or more datasets requires a deep and rigorous analysis of each data set to extract and determine those m/z values that give rise to chromatographic peaks.

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Microwave-Assisted Rapid Access to Bio-active Heterocycles
Vivek Polshettiwar and Rajender S. Varma

Environmentally benign protocols have been developed for the synthesis of various pharmaceutically active heterocycles namely 1,3,4-oxadiazoles, 1,3,4-thiadiazoles, 1,3-dioxanes, pyrazoles, hydrazones and 3,4-dihydropyrimidin-2(1H)-ones, which proceed under the influence of microwave irradiation and using eco-friendly conditions. These greener protocols were catalyzed efficiently by solid supported Nafion®NR50, phosphorus pentasulfide on alumina under solvent-free conditions.

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New Protein Biomarkers for Histopathological Classification of Breast Cancer
Brozkova Kristyna, Knoflickova Dana, Bouchal Pavel, Nenutil Rudolf and Vojtesek Borivoj

We used Ciphergen technology based on SELDI TOF-MS (Surface Enhanced Laser Desorption/Ionisation Time-of-Flight Mass Spectrometry) for analysis of protein expression profiles of 105 breast cancer tissue samples. The aim of this study was the identification of single proteins or protein patterns specific for different tumour subgroups, which should take advantage of the biomarker as an alternative to commonly used diagnostic and prognostic characteristics.

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Two-Dimensional Molecular Profiling of Multiple Myeloma
Zelena Jana, Konecna Hana, Zdrahal Zbynek, Penka Miroslav and Hajek Roman

We have compared two different solubilization buffers, we also evaluated protein precipitation with ethanol and optimized 2-DE conditions for human myeloma proteins.

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Proteomic Approach to Identify Stage Specific Biomarkers in Streptozotocin Induced Diabetic Nephropathy
Vikram Sharma and Kulbhushan Tikoo

The presence of albumin in the urine of healthy subjects presents a stumbling block in diagnostics putting a question mark on the validity of albumin test for the detection of diabetic nephropathy. Therefore there arises a dire need to hunt for the proteins in the pertinent bio- fluids which can serve as biomarkers.

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2-DE Analysis of Breast Cancer Cell Lines MDA-1833 and MDA-4175 with Distinct Metastatic Organ-Specific Potentials and Comparison with Parental Cell Line MDA-MB-231
Irena Selicharová, Miloslav Šanda, Lucia Svitekova, Sujata Suraswat Ohri, Aruna Vashishta, Martin Fusek and Václav Vetvicka

Breast cancer has diverse metastatic behavior. Subpopulations of cells with enhanced metastatic abilities either to bone (1833) or to lung (4175) have been isolated by the group of J. Massague by in vivo selection of MDA-MB-231 cells. We performed the 2-DE analysis of the cell lines. We have found and identified 11 differentially expressed protein spots.

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Detection of Protein-Protein Interactions of the Corepressor Alien
Robert Kob, Niko Escher, Juliane Kelm, Aria Baniahmad, Ferdinand von Eggeling and Christian Melle

The correpressor Alien is shown to interact with several proteins involved in regulation of transcription, DNA repair and cell cycle. Furthermore we found E2F1 transcription to be downregulated by Alien overexpression.

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Whole Body Endogenous Nitric Oxide Production in Patients with Decompensated Liver Disease
Demoncheaux E., Elphick D.A., Dürner M.B., Higgins G.E., Crowther D., Williams E.J., Higenbottam T.W and Gleeson D

Increased nitric oxide (NO) production has been implicated in the pathogenesis of the hyperdynamic circulation found in patients with advanced liver disease. There were no differences between patients with liver disease and controls with regard whole body NO production. Our results, in a well characterised set of patients, argue against greater basal NOS-dependent whole body NO production in patients with decompensated liver disease.

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Showing Results 71 - 80 of 102
Scientific News
New Technique Yields Drug, Biomedical Test Results in One Minute
Slug flow microextraction makes it possible to quickly detect the presence of drugs or to monitor certain medical conditions using only a single drop of blood or urine.
Detecting Pharmaceutical and Personal Care Products in Water
A simple, more convenient method than conventional guidelines.
Mass Spectrometry in Your Hand
Electrospray arrays can dramatically downsize systems and costs for onsite chemical analysis and many other applications.
Study Aims to Develop Breath Test for COPD
A new clinical iniative, lead by NYU Langone Medical Center, aims to determine a breath test’s effectiveness to identify volatile organic compounds (VOCs) in human breath that are biomarkers of chronic obstructive pulmonary disease (COPD).
Comparison of Caffeinated and Decaffeinated Coffee - Implications for Alzheimer's Disease
Researchers from the National University of Singapore successfully demonstrated the viability of GC-TOF-MS as an analytical platform for metabolomics analysis of coffee samples.
Repressing the Repressors May Drive Tissue-Specific Cancers
Stowers scientists establish Drosophila and mammalian models to study mutations found in pediatric brain tumors.
Embalming Study ‘Rewrites’ Key Chapter in Egyptian History
New evidence to suggest that the origins of mummification started in ancient Egypt 1,500 years earlier than previously thought.
Identification of Psoriatic Arthritis Mediators in Synovial Fluid
This study represents the most comprehensive proteomic analysis of psoriatic arthritis synovial fluid, to date.
Mass Spec-Based Metabolomics Workflows to Evaluate Plant Immunity
This article reviews metabolomics studies used to evaluate plant immunity with an emphasis on mass spectrometry in its many forms.
Using LC-MS to Analyse Sulfonamides in Food Grade Honey
Sulfonamides are one of a number of groups of chemicals whose presence in honey is limited by international regulations.
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