|Application of metabolomics in drug-resistant epilepsy research|
Federica Murgia1, Simone Poddighe1, Francesco Del Carratore1, Lorenzo Polizzi2, Antonella Muroni2, Luigi Barberini3, Monica Puligheddu3, Francesco Marrosu2 , Luigi Atzori1
Metabolomics represents an important tool for biomarker discovery in drug-resistant epilepsy and for the study of the pathophysiology of this disease.
|Changes in the metabolic profile of urine from mink during early pregnancy|
Mette Skou Hedemann
Metabolic profiling of urine from pregnant mink showed that ß-oxidation as well as protein metabolism is changed during pregnancy in mink and it is hypothesized that the changes occur to ensure optimal nutrition of the foetuses.
|A KNIME Pipeline for the Analysis of GC-MS Data in Metabolomics|
Sonia Liggi1, Maria Laura Santoru1, Cristina Piras1, Antonio Murgia2, Pierluigi Caboni2, Luigi Atzori1
A KNIME pipeline was developed to perform pre-processing of GC-MS data in an automated way and applied to a Inflammatory bowel diseases case study
|Metabolic response to everolimus in patient-derived xenografts of triple negative breast cancer|
Leslie R. Euceda1, Deborah K. Hill1,2, Endre Stokke1, Elisabetta Marangoni3, Tone F. Bathen1, Siver A. Moestue1,2
Everolimus treatment metabolic effects on TNBC PDX models were investigated using MR spectroscopy. PLS-DA successfully discriminated treated from controls and PDX expressing INPP4B and not. LMM revealed significant differences in 4/17 metabolites and two metabolite ratios between treated and controls.
|PredRet: Prediction of Retention Time by Direct Mapping between Multiple Chromatographic Systems|
Jan Stanstrup, Steffen Neumann, Urška Vrhovšek
Retention time (RT) information is under-utilized in LC-MS based metabolomics and sharing of RTs between systems is not currently possible. PredRet is a new system that allows highly accurate mapping and prediction of RTs between LC systems.
|Profiling of metabolomic changes induced by testosterone esters in pig plasma and urine|
Kamil Stastny, Martin Faldyna, Milan Franek
In this study, metabolic fingerprinting to discriminate between pigs treated with 17ß-testosteron esters and control animals has been investigated. Multivariate statistical analysis showed significant metabolic differences between test and control groups on day 28 after aplication of the testosterone hormonal preparation.
|A Novel Bioluminescent HTS Method for Rapid NAD(P)/NAD(P)H Detection Poster|
Jolanta Vidugiriene, Donna Leippe, Mary Sobol, Wenhui Zhou, Gediminas Vidugiris, Troy Good, Laurent Bernad, Poncho Meisenheimer and James J. Cali
Nicotinamide adenine dinucleotides (NAD+, NADH, NADP+ and NADPH) are fundamental co-factors of cellular energy metabolism. These dinucleotides are essential for macromolecule biosynthesis and the maintenance of the cellular redox potential. Our new rapid, easy-to-use assays for measuring dinucleotides are convenient tool for investigating their role in these processes.
|ROS-Glo™ H2O2 Assay: A Luminescent Assay for Detection of Reactive Oxygen Species Poster|
Gediminas Vidugiris, Sarah Duellman, John Shultz, Jolanta Vidugiriene, Hui Wang, Jean Osterman, Wenhui Zhou, Poncho Meisenheimer and James J. Cali
H2O2 is a reactive oxygen species (ROS) that is measured in cells as a marker of oxidative stress. It is also measured as a marker of enzyme activities that either consume or produce H2O2. It is desirable to screen chemical compounds for their capacity to alter H2O2 levels in cultured cells or for their effects on H2O2 levels in enzyme reactions.
|A Comparison of ITEX Dynamic Headspace–GC/MS to other Enrichment Techniques for Analysis of Flavoring Compounds|
Douglas Doster1; Roger Pearson1; Sean Eppel1; Ken Rice1; Tom Flug2; Brian Peat2; Guenter Boehm2
Enrichment techniques are commonly used for the analysis of flavoring compounds in different matrices with GC/MS. Analysis of flavoring compounds is done by purge & trap, SPME or headspace, depending on requirements for sensitivity. The In-Tube Ex¬traction (ITEX) Dynamic Headspace uses a micro trap filled with an adsorbent material to efficiently extract the compounds. Here we evaluate if the ITEX can be used to effectively analyze for these compounds and reduce the analyst’s time involved.