Publications by authors named "Erik Hanff"

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GC-MS measurement of spermidine and putrescine in serum of elderly subjects: intriguing association between spermidine and homoarginine.
Erik Hanff, Alexander Bollenbach, Bibiana Beckmann, Gorig Brunner, Dimitrios Tsikas

Amino Acids· February 2020

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Synthesis of homoagmatine and GC-MS analysis of tissue homoagmatine and agmatine: evidence that homoagmatine but not agmatine is a metabolite of pharmacological L-homoarginine in the anesthetized rat.
Dimitrios Tsikas, Alexander Bollenbach, Erik Hanff, Bibiana Beckmann, Björn Redfors

Amino Acids· February 2020

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Muscle phenotype of AGAT- and GAMT-deficient mice after simvastatin exposure.
Ali Sasani, Sönke Hornig, Ricarda Grzybowski, Kathrin Cordts, Erik Hanff

Amino Acids· January 2020

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Enhanced Nitric Oxide (NO) and Decreased ADMA Synthesis in Pediatric ADHD and Selective Potentiation of NO Synthesis by Methylphenidate.
Kathrin Jansen, Beatrice Hanusch, Saskia Pross, Erik Hanff, Kathrin Drabert

J Clin Med· January 2020

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High plasma guanidinoacetate-to-homoarginine ratio is associated with high all-cause and cardiovascular mortality rate in adult renal transplant recipients.
Erik Hanff, Mohammad Yusof Said, Arslan Arinc Kayacelebi, Adrian Post, Isidor Minovic

Amino Acids· November 2019

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Evidence by GC-MS that lysine is an arginase-catalyzed metabolite of homoarginine in vitro and in vivo in humans.
Alexander Bollenbach, Kathrin Cordts, Erik Hanff, Dorothee Atzler, Chi-Un Choe

Anal Biochem· July 2019

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Asymmetric dimethylation and citrullination of proteinic arginine and homoarginine synthesis in human Helicobacter pylori infection.
Alexander Bollenbach, Erik Hanff, Gorig Brunner, Dimitrios Tsikas

Amino Acids· June 2019

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Distinct associations between plasma osteoprotegerin, homoarginine and asymmetric dimethylarginine in chronic kidney disease male patients with coronary artery disease.
Ewa Wieczorek-Surdacka, Erik Hanff, Bernadeta Chyrchel, Marek Kuźniewski, Andrzej Surdacki

Amino Acids· June 2019

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Development and validation of GC-MS methods for the comprehensive analysis of amino acids in plasma and urine and applications to the HELLP syndrome and pediatric kidney transplantation: evidence of altered methylation, transamidination, and arginase activity.
Erik Hanff, Stephan Ruben, Martin Kreuzer, Alexander Bollenbach, Arslan Arinc Kayacelebi

Amino Acids· March 2019

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Measurement of S -Nitrosoglutathione in Plasma by Liquid Chromatography-Tandem Mass Spectrometry.
Dimitrios Tsikas, Erik Hanff

Methods Mol Biol· January 2019

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Utility of homoarginine in the GC-MS quantification of asymmetric dimethylarginine (ADMA) in human serum proteins.
Alexander Bollenbach, Erik Hanff, Dimitrios Tsikas

Anal Biochem· December 2018

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Long-term effects of on the relationship between oxygen uptake and power after three weeks of supplemented HIHVT.
Armin Finkel, Magdalena Aleksandra Röhrich, Norbert Maassen, Moritz Lützow, Larissa Sarah Blau, Erik Hanff

J Appl Physiol (1985)· December 2018

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Investigation of N-hydroxy-l-arginine interference in the quantitative determination of nitrite and nitrate in human plasma and urine by GC-NICI-MS.
Alexander Bollenbach, Erik Hanff, Dimitrios Tsikas

J Chromatogr B Analyt Technol Biomed Life Sci· November 2018

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Effects of single and combined metformin and L-citrulline supplementation on L-arginine-related pathways in Becker muscular dystrophy patients: possible biochemical and clinical implications.
Erik Hanff, Patricia Hafner, Alexander Bollenbach, Ulrike Bonati, Arslan Arinc Kayacelebi

Amino Acids· October 2018

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GC-MS quantification of urinary symmetric dimethylarginine (SDMA), a whole-body symmetric l-arginine methylation index.
Alexander Bollenbach, Erik Hanff, Bibiana Beckmann, Ruan Kruger, Dimitrios Tsikas

Anal Biochem· September 2018

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Results, meta-analysis and a first evaluation of UR, the urinary nitrate-to-nitrite molar ratio, as a measure of nitrite reabsorption in experimental and clinical settings.
Dimitrios Tsikas, Erik Hanff, Alexander Bollenbach, Ruan Kruger, Vu Vi Pham

Amino Acids· July 2018

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GC-MS determination of nitrous anhydrase activity of bovine and human carbonic anhydrase II and IV.
Erik Hanff, Maximilian Zinke, Anke Böhmer, Janine Niebuhr, Mirja Maassen

Anal Biochem· June 2018

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Drastic decrease of global l-arginine bioavailability during orthotopic liver transplantation: A matter of ATP deficiency of the graft?
Dimitrios Tsikas, Erik Hanff, Thomas Becker

Nitric Oxide· February 2018

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Asymmetric dimethylarginine (ADMA), symmetric dimethylarginine (SDMA) and homoarginine (hArg): the ADMA, SDMA and hArg paradoxes.
Dimitrios Tsikas, Alexander Bollenbach, Erik Hanff, Arslan Arinc Kayacelebi

Cardiovasc Diabetol· January 2018

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Metabolism and distribution of pharmacological homoarginine in plasma and main organs of the anesthetized rat.
Duygu Naile Günes, Arslan Arinc Kayacelebi, Erik Hanff, Joel Lundgren, Björn Redfors

Amino Acids· December 2017

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Lacking linearity in quantitative stable-isotope LC-MS/MS measurement of F-isoprostanes is an irrefutable indicator of analytical inadequacy.
Dimitrios Tsikas, Erik Hanff

J Chromatogr B Analyt Technol Biomed Life Sci· October 2017

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-Adenosyl-L-methionine towards hepatitis C virus expression: Need to consider -Adenosyl-L-methionine's chemistry, physiology and pharmacokinetics.
Dimitrios Tsikas, Erik Hanff, Alexander Bollenbach

World J Gastroenterol· October 2017

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Helicobacter pylori, Its Urease and Carbonic Anhydrases, and Macrophage Nitric Oxide Synthase.
Dimitrios Tsikas, Erik Hanff, Gorig Brunner

Trends Microbiol· August 2017

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Low plasma homoarginine concentration is associated with high rates of all-cause mortality in renal transplant recipients.
Arslan Arinc Kayacelebi, Isidor Minović, Erik Hanff, Anne-Roos S Frenay, Martin H de Borst

Amino Acids· July 2017

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The role of L-arginine/L-homoarginine/nitric oxide pathway for aortic distensibility and intima-media thickness in stroke patients.
Arash Haghikia, Georgi Radoslavov Yanchev, Arslan Arinc Kayacelebi, Erik Hanff, Nils Bledau

Amino Acids· June 2017

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