Robert Verkerk

Robert Verkerk

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Robert Verkerk

Robert Verkerk

Publications by authors named "Robert Verkerk"

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29Publications

126Reads

Kynurenine Pathway in Autism Spectrum Disorders in Children.

Neuropsychobiology 2017 25;76(2):82-88. Epub 2018 Apr 25.

Faculty of Health Sciences, Buskerud University College, Drammen, Norway.

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September 2018

Acute Ischemic Stroke Severity, Progression, and Outcome Relate to Changes in Dipeptidyl Peptidase IV and Fibroblast Activation Protein Activity.

Transl Stroke Res 2017 04 26;8(2):157-164. Epub 2016 Aug 26.

Laboratory of Medical Biochemistry, University of Antwerp, Universiteitsplein 1, Building S, room D.S.513, 2610, Wilrijk-Antwerp, Belgium.

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April 2017

Prolyl carboxypeptidase purified from human placenta: its characterization and identification as an apelin-cleaving enzyme.

Biochim Biophys Acta 2016 11 20;1864(11):1481-8. Epub 2016 Jul 20.

Laboratory of Medical Biochemistry, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium.

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November 2016

Increased plasma levels of competing amino acids, rather than lowered plasma tryptophan levels, are associated with a non-response to treatment in major depression.

Eur Neuropsychopharmacol 2016 08 26;26(8):1286-96. Epub 2016 May 26.

Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; IMPACT Research Center, Deakin University, Geelong, Australia; Department of Psychiatry, Faculty of Medicine, State University of Londrina, Londrina, Brazil; Department of Psychiatry, Medical University Plovdiv, Plovdiv, Bulgaria.

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August 2016

Multiprobe molecular imaging of an NMDA receptor hypofunction rat model for glutamatergic dysfunction.

Psychiatry Res Neuroimaging 2016 Feb 12;248:1-11. Epub 2016 Jan 12.

Molecular Imaging Center Antwerp, University of Antwerp, Antwerp, Belgium. Electronic address:

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February 2016

Serum Phenylalanine, Tyrosine, and their Ratio in Acute Ischemic Stroke: on the Trail of a Biomarker?

J Mol Neurosci 2016 Jan 30;58(1):102-8. Epub 2015 Sep 30.

Section of Biostatistics, Oslo University Hospital, Ullevål, Oslo, Norway.

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January 2016

Ongoing episode of major depressive disorder is not associated with elevated plasma levels of kynurenine pathway markers.

Psychoneuroendocrinology 2015 Jun 25;56:12-22. Epub 2015 Feb 25.

Faculty of Health Sciences, Buskerud and Vestfold University College, Drammen, Norway.

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June 2015

Activation of the kynurenine pathway in the acute phase of stroke and its role in fatigue and depression following stroke.

J Mol Neurosci 2014 25;54(2):181-7. Epub 2014 Mar 25.

Faculty of Health Sciences, Buskerud and Vestfold University College, 3004, Drammen, Norway,

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May 2015

Prolyl carboxypeptidase activity decline correlates with severity and short-term outcome in acute ischemic stroke.

Neurochem Res 2015 Jan 5;40(1):81-8. Epub 2014 Nov 5.

Laboratory of Medical Biochemistry, Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium.

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January 2015

Validation of a specific prolylcarboxypeptidase activity assay and its suitability for plasma and serum measurements.

Anal Biochem 2013 Dec 10;443(2):232-9. Epub 2013 Sep 10.

Laboratory of Medical Biochemistry, Department of Pharmaceutical Sciences, University of Antwerp, 2610 Antwerp, Belgium.

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December 2013

Inflammation-induced catabolism of tryptophan and tyrosine in acute ischemic stroke.

J Mol Neurosci 2013 Nov 30;51(3):893-902. Epub 2013 Aug 30.

Department of Health Sciences, Buskerud University College, Drammen, Norway,

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November 2013

Depressive symptoms in Crohn's disease: relationship with immune activation and tryptophan availability.

PLoS One 2013 27;8(3):e60435. Epub 2013 Mar 27.

Department of Psychiatry and Psychology, Maastricht University Medical Centre, EURON, Maastricht, The Netherlands.

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September 2013

A critique of prevailing approaches to nutrient risk analysis pertaining to food supplements with specific reference to the European Union.

Toxicology 2010 Nov 23;278(1):17-26. Epub 2009 Dec 23.

Alliance for Natural Health, Science Unit, The Atrium, Curtis Road, Dorking, Surrey RH41XA, United Kingdom.

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November 2010

The paradox of overlapping micronutrient risks and benefits obligates risk/benefit analysis.

Toxicology 2010 Nov 24;278(1):27-38. Epub 2010 Feb 24.

Science Unit, Alliance for Natural Health, The Atrium, Curtis Road, Dorking, Surrey RH41XA, United Kingdom.

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November 2010

The role of tryptophan catabolism along the kynurenine pathway in acute ischemic stroke.

Neurochem Res 2010 Sep 19;35(9):1315-22. Epub 2010 May 19.

Department of Neurology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussel, Belgium.

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September 2010

Cytokine changes and tryptophan metabolites in medication-naïve and medication-free schizophrenic patients.

Neuropsychobiology 2009 22;59(2):123-9. Epub 2009 Apr 22.

Department of Psychiatry, College of Medicine, Korea University, Seoul, Korea.

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July 2009

Faulty serotonin--DHEA interactions in autism: results of the 5-hydroxytryptophan challenge test.

Neuro Endocrinol Lett 2008 Jun;29(3):385-90

University Center of Child and Adolescent Psychiatry, A.Z. Middelheim, Faculty of Medicine, University of Antwerp, Wilrijk, Belgium.

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June 2008

Tryptophan breakdown pathway in bipolar mania.

J Affect Disord 2007 Sep 30;102(1-3):65-72. Epub 2007 Jan 30.

Department of Psychiatry and Neuropsychology, University of Maastricht, The Netherlands.

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September 2007

Central serotonergic hypofunction in autism: results of the 5-hydroxy-tryptophan challenge test.

Neuro Endocrinol Lett 2007 Aug;28(4):449-55

The University Center of Child and Adolescent Psychiatry, A.Z. Middelheim, University of Antwerp, Antwerp, Belgium.

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August 2007

Kynurenine pathway in major depression: evidence of impaired neuroprotection.

J Affect Disord 2007 Feb 6;98(1-2):143-51. Epub 2006 Sep 6.

University of Maastricht, Department of Psychiatry and Neuropsychology, UNS 50, Maastricht, 6200MD, The Netherlands.

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February 2007

Development of a fast kinetic method for the determination of carboxypeptidase U (TAFIa) using C-terminal arginine containing peptides as substrate.

Anal Biochem 2005 May;340(1):106-12

Laboratory of Medical Biochemistry, University of Antwerp, B-2610 Antwerp, Belgium.

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May 2005

Psychobiological aspects of somatoform disorders: contributions of monoaminergic transmitter systems.

Neuropsychobiology 2004 ;49(1):24-9

Center for Behavioral Medicine, Klinik Roseneck, Prien am Chiemsee, Germany.

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March 2004