Publications by authors named "Anja Mitschke"

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GC-MS and GC-MS/MS measurement of ibuprofen in 10-μL aliquots of human plasma and mice serum using [α-methylo-H]ibuprofen after ethyl acetate extraction and pentafluorobenzyl bromide derivatization: Discovery of a collision energy-dependent H/D isotope effect and pharmacokinetic application to inhaled ibuprofen-arginine in mice.
Dimitrios Tsikas, Arslan Arinc Kayacelebi, Erik Hanff, Anja Mitschke, Bibiana Beckmann

J Chromatogr B Analyt Technol Biomed Life Sci· February 2017

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Nitro-oleic acid and epoxy-oleic acid are not altered in obesity and type 2 diabetes.
Dimitrios Tsikas, Sandor Batkai, Anja Mitschke, Jens Jordan, Stefan Engeli

Cardiovasc Res· June 2014

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Accurate measurement of nitrate, nitrite, and S-nitrosothiols in biological samples by mass spectrometry.
Dimitrios Tsikas, Anke Böhmer, Anja Mitschke, Pedro Araujo

Free Radic Biol Med· December 2013

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Even and carbon dioxide independent distribution of nitrite between plasma and erythrocytes of healthy humans at rest.
Dimitrios Tsikas, Karina Sutmöller, Mirja Maassen, Marisa Nacke, Anke Böhmer, Anja Mitschke

Nitric Oxide· May 2013

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Stable isotope gas chromatography-tandem mass spectrometry determination of aminoethylcysteine ketimine decarboxylated dimer in biological samples.
Dimitrios Tsikas, Christopher E Evans, Travis T Denton, Anja Mitschke, Frank-Mathias Gutzki

Anal Biochem· November 2012

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Measurement of nitrite in urine by gas chromatography-mass spectrometry.
Dimitrios Tsikas, Maria-Theresia Suchy, Anja Mitschke, Bibiana Beckmann, Frank-Mathias Gutzki

Methods Mol Biol· May 2012

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Stable-isotope dilution GC-MS method for ethanol in vapour ethanol and microdialysis systems based on carbonate-catalyzed extractive pentafluorobenzoylation.
Mani Haschemi Nassab, Anja Mitschke, Maria-Theresia Suchy, Frank-Mathias Gutzki, Alexander A Zoerner

Analyst· May 2012

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Measurement of 3-nitro-tyrosine in human plasma and urine by gas chromatography-tandem mass spectrometry.
Dimitrios Tsikas, Anja Mitschke, Frank-Mathias Gutzki

Methods Mol Biol· March 2012

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¹⁸O-Labeled nitrous acid and nitrite: Synthesis, characterization, and oxyhemoglobin-catalyzed oxidation to ¹⁸O-labeled nitrate.
Anke Böhmer, Anja Mitschke, Anna Reib, Frank-Mathias Gutzki, Dimitrios Tsikas

Anal Biochem· February 2012

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Stable-isotope dilution GC-MS approach for nitrite quantification in human whole blood, erythrocytes, and plasma using pentafluorobenzyl bromide derivatization: nitrite distribution in human blood.
Alexandra Schwarz, Darko Modun, Karsten Heusser, Jens Tank, Frank-Mathias Gutzki, Anja Mitschke

J Chromatogr B Analyt Technol Biomed Life Sci· May 2011

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Unique pentafluorobenzylation and collision-induced dissociation for specific and accurate GC-MS/MS quantification of the catecholamine metabolite 3,4-dihydroxyphenylglycol (DHPG) in human urine.
Alexander A Zoerner, Karsten Heusser, Frank M Gutzki, Anja Mitschke, Jens Tank

J Chromatogr B Analyt Technol Biomed Life Sci· May 2011

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GC-MS determination of creatinine in human biological fluids as pentafluorobenzyl derivative in clinical studies and biomonitoring: Inter-laboratory comparison in urine with Jaffé, HPLC and enzymatic assays.
Dimitrios Tsikas, Alexander Wolf, Anja Mitschke, Frank-Mathias Gutzki, Wolfgang Will

J Chromatogr B Analyt Technol Biomed Life Sci· October 2010

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Gas chromatography-mass spectrometry analysis of nitrite in biological fluids without derivatization.
Dimitrios Tsikas, Anke Böhmer, Anja Mitschke

Anal Chem· June 2010

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Evidence by gas chromatography-mass spectrometry of ex vivo nitrite and nitrate formation from air nitrogen oxides in human plasma, serum, and urine samples.
Dimitrios Tsikas, Anja Mitschke, Frank-Mathias Gutzki, Stefan Engeli, Jens Jordan

Anal Biochem· February 2010

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Specific GC-MS/MS stable-isotope dilution methodology for free 9- and 10-nitro-oleic acid in human plasma challenges previous LC-MS/MS reports.
Dimitrios Tsikas, Alexander Zoerner, Anja Mitschke, Yahya Homsi, Frank-Mathias Gutzki

J Chromatogr B Analyt Technol Biomed Life Sci· September 2009

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Nitro-fatty acids occur in human plasma in the picomolar range: a targeted nitro-lipidomics GC-MS/MS study.
Dimitrios Tsikas, Alexander A Zoerner, Anja Mitschke, Frank-Mathias Gutzki

Lipids· September 2009

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GC-MS assay for hepatic DDAH activity in diabetic and non-diabetic rats by measuring dimethylamine (DMA) formed from asymmetric dimethylarginine (ADMA): evaluation of the importance of S-nitrosothiols as inhibitors of DDAH activity in vitro and in vivo in humans.
Kristine Chobanyan, Thomas Thum, Maria-Theresia Suchy, Bijun Zhu, Anja Mitschke

J Chromatogr B Analyt Technol Biomed Life Sci· October 2007

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Accurate quantification of dimethylamine (DMA) in human urine by gas chromatography-mass spectrometry as pentafluorobenzamide derivative: evaluation of the relationship between DMA and its precursor asymmetric dimethylarginine (ADMA) in health and disease.
Dimitrios Tsikas, Thomas Thum, Thomas Becker, Vu Vi Pham, Kristina Chobanyan, Anja Mitschke

J Chromatogr B Analyt Technol Biomed Life Sci· May 2007

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9- and 10-Nitro-oleic acid do not interfere with the GC-MS quantitative determination of nitrite and nitrate in biological fluids when measured as their pentafluorobenzyl derivatives.
Anja Mitschke, Frank-Mathias Gutzki, Dimitrios Tsikas

J Chromatogr B Analyt Technol Biomed Life Sci· May 2007

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Accurate quantification of dimethylamine (DMA) in human plasma and serum by GC-MS and GC-tandem MS as pentafluorobenzamide derivative in the positive-ion chemical ionization mode.
Kristine Chobanyan, Anja Mitschke, Frank-Mathias Gutzki, Dirk O Stichtenoth, Dimitrios Tsikas

J Chromatogr B Analyt Technol Biomed Life Sci· May 2007

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Determination of 3-nitrotyrosine in human urine at the basal state by gas chromatography-tandem mass spectrometry and evaluation of the excretion after oral intake.
Dimitrios Tsikas, Anja Mitschke, Maria-Theresia Suchy, Frank-Mathias Gutzki, Dirk O Stichtenoth

J Chromatogr B Analyt Technol Biomed Life Sci· November 2005

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Gas chromatography-mass spectrometry of cis-9,10-epoxyoctadecanoic acid (cis-EODA). II. Quantitative determination of cis-EODA in human plasma.
Dimitrios Tsikas, Anja Mitschke, Frank-Mathias Gutzki, Hartmut H Meyer, Jürgen C Frölich

J Chromatogr B Analyt Technol Biomed Life Sci· May 2004

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