Results 81 to 90 of about 607,507 (319)

Analysis of selected herbicide metabolites in surface and ground water of the United States [PDF]

, 2000
One of the primary goals of the US Geological Survey (USGS) Laboratory in Lawrence, Kansas, is to develop analytical methods for the analysis of herbicide metabolites in surface and ground water that are vital to the study of herbicide fate and ...
Scribner, Elisabeth A., Thurman, E. M., Zimmerman, Lisa R.   +2 more
core   +1 more source

Stroma gene signature predicts responsiveness to chemotherapy in pancreatic ductal adenocarcinoma patient‐derived xenograft models

Molecular Oncology, EarlyView.
Pancreatic ductal adenocarcinoma patient‐derived xenografts (PDAC‐PDXs) engrafted orthotopically in the pancreas of immunodeficient mice retain the main genetic and histopathological characteristics of the original human tumors. A 294 stroma gene signature differentiates between PDAC‐PDXs that are responsive to gemcitabine plus nab‐paclitaxel versus ...
Alessia Anastasia, Laura Formenti, Paola Ostano, Lucia Minoli, Andrea Resovi, Lavinia Morosi, Claudia Fioravanti, Edoardo Micotti, Cristina Matteo, Eugenio Scanziani, Giovanna Chiorino, Raffaella Giavazzi, Carmen Ghilardi, Dorina Belotti   +13 more
wiley   +1 more source

Identification of a Widespread Palmitoylethanolamide Contamination in Standard Laboratory Glassware. [PDF]

, 2017
Introduction: Fatty acid ethanolamides (FAEs) are a family of lipid mediators that participate in a host of biological functions. Procedures for the quantitative analysis of FAEs include organic solvent extraction from biological matrices (e.g., blood ...
Angelini, Roberto, Argueta, Donovan A, DiPatrizio, Nicholas V, Piomelli, Daniele   +3 more
core  

An R package to analyse LC/MS metabolomic data: MAIT (Metabolite Automatic Identification Toolkit) [PDF]

, 2017
Current tools for liquid chromatography and mass spectrometry for metabolomic data cover a limited number of processing steps, whereas online tools are hard to use in a programmable fashion. This article introduces the Metabolite Automatic Identification
Andrés Lacueva, Ma. Cristina, Fernández Albert, Francesc, Llorach, Rafael, Perera Lluna, Alexandre   +3 more
core   +1 more source

Peripheral blood proteome biomarkers distinguish immunosuppressive features of cancer progression

Molecular Oncology, EarlyView.
Immune status significantly influences cancer progression. This study used plasma proteomics to analyze benign 67NR and malignant 4T1 breast tumor models at early and late tumor stages. Immune‐related proteins–osteopontin (Spp1), lactotransferrin (Ltf), calreticulin (Calr) and peroxiredoxin 2 (Prdx2)–were associated with systemic myeloid‐derived ...
Yeon Ji Park, Jae Won Oh, Hyewon Chung, Jung Won Kwon, Yi Rang Na, Kwang Pyo Kim, Seung Hyeok Seok   +6 more
wiley   +1 more source

Aspectos analíticos e regulatórios na determinação de resíduos de macrolídeos em alimentos de origem animal por cromatografia líquida associada à espectrometria de massas

Química Nova, 2013
This is an overview of LC-MS techniques applied for macrolide determination in food, including sample preparation and method validation, as well as the policies adopted by international agencies regarding their presence in food.
Marcela Sismotto, Jonas Augusto Rizzato Paschoal, Felix G. R. Reyes   +2 more
doaj   +1 more source

Liquid chromatography tandem mass spectrometry analysis of synthetic coccidiostats in eggs [PDF]

, 2017
Coccidiostats are synthetic drugs administered to animals, especially to poultry, to cure coccidiosis. In this paper, we present a selective liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to analyze residues of five synthetic ...
Buiarelli, Francesca, DI FILIPPO, Patrizia, Giannetti, Luigi, Neri, Bruno, Pomata, Donatella, Rago, Daniela, Riccardi, Carmela   +6 more
core   +1 more source

Abuse of nutmeg seeds: Detectable by means of liquid chromatography-mass spectrometry techniques? [PDF]

, 2021
Numerous case reports of intoxications with nutmeg seeds (Myristica fragrans, Houtt.) can be found in literature often following their abuse, as psychotropic effects were described after ingestions of large doses.
Manier, Sascha K., Meyer, Markus R., Wagmann, Lea, Weber, Armin A.   +3 more
core   +1 more source

Plasma lipidomic and metabolomic profiles in high‐grade glioma patients before and after 72‐h presurgery water‐only fasting

Molecular Oncology, EarlyView.
Presurgery 72‐h fasting in GB patients leads to adaptations of plasma lipids and polar metabolites. Fasting reduces lysophosphatidylcholines and increases free fatty acids, shifts triglycerides toward long‐chain TGs and increases branched‐chain amino acids, alpha aminobutyric acid, and uric acid.
Iris Divé, Lisa Hahnefeld, Katharina J. Wenger, Donat Kögel, Joachim Steinbach, Gerd Geisslinger, Michael W. Ronellenfitsch, Irmgard Tegeder   +7 more
wiley   +1 more source

Water isotopic ratios from a continuously melted ice core sample [PDF]

Atmos. Meas. Tech., 4, 2531-2542, 2011, 2014
A new technique for on-line high resolution isotopic analysis of liquid water, tailored for ice core studies is presented. We built an interface between a Wavelength Scanned Cavity Ring Down Spectrometer (WS-CRDS) purchased from Picarro Inc. and a Continuous Flow Analysis (CFA) system.
arxiv   +1 more source