Is There a “Blind Spot” in Point-of-Care Testing for Residual Heparin After Cardiopulmonary Bypass? A Prospective, Observational Cohort Study
Wand, Saskia, Heise, Daniel, Hillmann, Nadine, Bireta, Christian, Bräuer, Anselm, Ahsen, Nicolas von, Quintel, Michael
Published in Clinical and applied thrombosis/hemostasis (2020)
Published in Clinical and applied thrombosis/hemostasis (2020)
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Journal Article
Lack of correlation between Treg quantification assays in inflammatory bowel disease patients
Brandhorst, Gunnar, Petrova, Darinka Todorova, Weigand, Sebastian, Eberle, Christoph, von Ahsen, Nicolas, Schmitz, Jessica, Schultze, Frank Christian, Raddatz, Dirk, Karaus, Michael, Oellerich, Michael, Walson, Philip D
Published in World journal of gastroenterology : WJG (21.03.2015)
Published in World journal of gastroenterology : WJG (21.03.2015)
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Journal Article
Analysis of ITPA phenotype-genotype correlation in the Bulgarian population revealed a novel gene variant in exon 6
Atanasova, Srebrena, Shipkova, Maria, Svinarov, Dobrin, Mladenova, Antoaneta, Genova, Mariana, Wieland, Eberhard, Oellerich, Michael, von Ahsen, Nicolas
Published in Therapeutic drug monitoring (01.02.2007)
Published in Therapeutic drug monitoring (01.02.2007)
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Journal Article
Differences in procalcitonin measurements between three BRAHMS-partnered immunoassays (Liaison, Elecsys and Architect)
Eidizadeh, Abass, Asif, Abdul R., von Ahsen, Nicolas, Binder, Lutz, Schnelle, Moritz
Published in Clinical chemistry and laboratory medicine (01.09.2019)
Published in Clinical chemistry and laboratory medicine (01.09.2019)
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Journal Article
Improved method for therapeutic drug monitoring of 6-thioguanine nucleotides and 6-methylmercaptopurine in whole-blood by LC/MSMS using isotope-labeled internal standards
Kirchherr, Hartmut, Shipkova, Maria, von Ahsen, Nicolas
Published in Therapeutic drug monitoring (01.06.2013)
Published in Therapeutic drug monitoring (01.06.2013)
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Journal Article
Comparison and Harmonization of Different Semi-Automated and Automated qRT-PCR Assays in the Assessment of SARS-CoV-2
Dierks, Sascha, Thiele, Karin, Bohne, Wolfgang, Lugert, Raimond, Weig, Michael, Groß, Uwe, von Ahsen, Nicolas, Schanz, Julie, Fischer, Andreas, Schnelle, Moritz
Published in Viruses (01.10.2022)
Published in Viruses (01.10.2022)
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Journal Article
Validation of a high-performance liquid chromatography method for thiopurine S-methyltransferase activity in whole blood using 6-mercaptopurine as substrate
Rieger, Hannah, Schmidt, Patrik, Schaeffeler, Elke, Abe, Manabu, Schiffhauer, Mira, Schwab, Matthias, von Ahsen, Nicolas, Zurek, Gabriela, Kirchherr, Hartmut, Shipkova, Maria, Wieland, Eberhard
Published in Clinical chemistry and laboratory medicine (25.04.2018)
Published in Clinical chemistry and laboratory medicine (25.04.2018)
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Journal Article
Beta-Amlyoid 1–42 and Tau-Protein in Cerebrospinal Fluid of Patients with Parkinson’s Disease Dementia
Mollenhauer, Brit, Trenkwalder, Claudia, von Ahsen, Nicolas, Bibl, Mirko, Steinacker, Petra, Brechlin, Peter, Schindehuette, Jan, Poser, Sigrid, Wiltfang, Jens, Otto, Markus
Published in Dementia and geriatric cognitive disorders (01.01.2006)
Published in Dementia and geriatric cognitive disorders (01.01.2006)
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Journal Article
Thiopurines Induce Oxidative Stress in T-Lymphocytes: A Proteomic Approach
Oellerich, Michael, von Ahsen, Nicolas, Ziegler, Sonia, Misdaq, Misbah, Asif, Abdul R.
Published in Mediators of Inflammation (01.01.2015)
Published in Mediators of Inflammation (01.01.2015)
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Journal Article
Proteomics Approach to Identify the Interacting Partners of Cellular Prion Protein and Characterization of Rab7a Interaction in Neuronal Cells
Zafar, Saima, von Ahsen, Nicolas, Oellerich, Michael, Zerr, Inga, Schulz-Schaeffer, Walter J, Armstrong, Victor W, Asif, Abdul R
Published in Journal of proteome research (01.07.2011)
Published in Journal of proteome research (01.07.2011)
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Journal Article
Measurement of Erythrocyte Inosine Triphosphate Pyrophosphohydrolase (ITPA) Activity by HPLC and Correlation of ITPA Genotype-Phenotype in a Caucasian Population
Shipkova, Maria, Lorenz, Kristin, Oellerich, Michael, Wieland, Eberhard, von Ahsen, Nicolas
Published in Clinical chemistry (Baltimore, Md.) (01.02.2006)
Published in Clinical chemistry (Baltimore, Md.) (01.02.2006)
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Journal Article
Establishment of thiopurine S-methyltransferase gene knockdown in jurkat T-lymphocytes: an in vitro model of TPMT polymorphism
Misdaq, Misbah, Andag, Reiner, Oellerich, Michael, Asif, Abdul R, von Ahsen, Nicolas
Published in Therapeutic drug monitoring (01.10.2012)
Published in Therapeutic drug monitoring (01.10.2012)
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Journal Article
Association of Inosine Triphosphatase 94C>A and Thiopurine S-Methyltransferase Deficiency with Adverse Events and Study Drop-Outs under Azathioprine Therapy in a Prospective Crohn Disease Study
von Ahsen, Nicolas, Armstrong, Victor W, Behrens, Christoph, von Tirpitz, Christian, Stallmach, Andreas, Herfarth, Hans, Stein, Jurgen, Bias, Peter, Adler, Guido, Shipkova, Maria, Oellerich, Michael, Kruis, Wolfgang, Reinshagen, Max
Published in Clinical chemistry (Baltimore, Md.) (01.12.2005)
Published in Clinical chemistry (Baltimore, Md.) (01.12.2005)
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Journal Article
Chip-based genotyping: translation of pharmacogenetic research to clinical practice
von Ahsen, Nicolas, Oellerich, Michael
Published in Clinical chemistry (Baltimore, Md.) (01.07.2007)
Published in Clinical chemistry (Baltimore, Md.) (01.07.2007)
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Journal Article
Genotyping of Eight Thiopurine Methyltransferase Mutations: Three-Color Multiplexing, "Two-Color/Shared" Anchor, and Fluorescence-quenching Hybridization Probe Assays Based on Thermodynamic Nearest-Neighbor Probe Design
Schutz, Ekkehard, von Ahsen, Nicolas, Oellerich, Michael
Published in Clinical chemistry (Baltimore, Md.) (01.11.2000)
Published in Clinical chemistry (Baltimore, Md.) (01.11.2000)
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Journal Article
Analytic aspects of monitoring therapy with thiopurine medications
Armstrong, Victor W, Shipkova, Maria, von Ahsen, Nicolas, Oellerich, Michael
Published in Therapeutic drug monitoring (01.04.2004)
Published in Therapeutic drug monitoring (01.04.2004)
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Journal Article
Rapid detection of ITPA 94c>a and IVS2 + 21A>C gene mutations by real-time fluorescence PCR and in vitro demonstration of effect of ITPA IVS2 + 21A>C polymorphism on splicing efficiency
HELLER, Tanja, OELLERICH, Michael, ARMSTRONG, Victor William, VON AHSEN, Nicolas
Published in Clinical chemistry (Baltimore, Md.) (01.11.2004)
Published in Clinical chemistry (Baltimore, Md.) (01.11.2004)
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Journal Article