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International Journal of Tryptophan Research


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Editor in Chief: Gilles Guillemin

Aims & Scope: The International Journal of Tryptophan Research is an international, open access, peer reviewed jo... more

Indexing: Pubmed, CAB Abstracts, CABI Global Health, Chemical Abstracts Service, Chinese Electronic Periodical Service, Directory of Open Access Journals, EBSCO Academic Search Complete, Gale Academic OneFile, Gale Health Reference Centre, Gale InfoTrac Custom Journals, Index Copernicus, OAlster, ProQuest Health & Medical Complete, Pubmed Central, SCOPUS, Socolar

Directories: Academic Journals Database, EBSCO A-Z, HINARI, JournalSeek, JournalTOCs, OAJSE, ScientificCommons, Scirus, Ulrich's Periodicals

Processing Speed: Editorial decision less than 3 weeks, publication in average 3 weeks after acceptance

ISSN: 1178-6469



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Kynurenine Pathway Metabolites in Humans: Disease and Healthy States (9631 Views since 08 Jan 2009)

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L -Tryptophan: Basic Metabolic Functions, Behavioral Research and Therapeutic Indications (7725 Views since 23 Mar 2009)

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The Physiological Action of Picolinic Acid in the Human Brain (6417 Views since 28 Apr 2009)

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Tryptophan Research in Panic Disorder (6040 Views since 14 Aug 2008)

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Production and Peripheral Roles of 5-HTP, a Precursor of Serotonin (5175 Views since 30 Mar 2009)

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Assessment of the Potential Role of Tryptophan as the Precursor of Serotonin and Melatonin for the Aged Sleep-wake Cycle and Immune Function: Streptopelia Risoria as a Model (5059 Views since 14 Jan 2009)

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Effects of Kynurenine Pathway Metabolites on Intracellular NAD+ Synthesis and Cell Death in Human Primary Astrocytes and Neurons (4919 Views since 03 Apr 2009)

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Introductory Editorial (International Journal of Tryptophan Research) (4760 Views since 09 Apr 2008)

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Dedication: Paolo Guidetti (4016 Views since 16 Feb 2009)

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Role of the NMDA-receptor in Prepulse Inhibition in the Rat (3341 Views since 12 Feb 2010)

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Understanding the Roles of the Kynurenine Pathway in Multiple Sclerosis Progression (3285 Views since 25 Aug 2010)

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Serum Levels of Tryptophan, 5-Hydroxytryptophan and Serotonin in Patients Affected with Different Forms of Amenorrhea (3257 Views since 10 Jun 2010)

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Endogenous Kynurenine Aminotransferases Inhibitor is Proposed to Act as “Glia Depressing Factor” (GDF) (3246 Views since 11 May 2010)

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Effects of Acute Tryptophan Depletion on Three Different Types of Behavioral Impulsivity (3210 Views since 10 Jun 2010)

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On the Biological Importance of the 3-hydroxyanthranilic Acid: Anthranilic Acid Ratio (3201 Views since 10 Jun 2010)

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Kynurenine Pathway Metabolism is Involved in the Maintenance of the Intracellular NAD+ Concentration in Human Primary Astrocytes (3180 Views since 03 Aug 2010)

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Tryptophan, Neurodegeneration and HIV-Associated Neurocognitive Disorder (3000 Views since 10 Jun 2010)

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Specificity of the Acute Tryptophan and Tyrosine Plus Phenylalanine Depletion and Loading Tests I. Review of Biochemical Aspects and Poor Specificity of Current Amino Acid Formulations (2858 Views since 02 Jun 2010)

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IDO-Mediated Tryptophan Degradation in the Pathogenesis of Malignant Tumor Disease (2833 Views since 10 Jun 2010)

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Indoleamine 2,3-Dioxygenase in Human Hematopoietic Stem Cell Transplantation (2824 Views since 10 Jun 2010)

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Effects of Kynurenine Pathway Inhibition on NAD+ Metabolism and Cell Viability in Human Primary Astrocytes and Neurons (2818 Views since 08 May 2011)

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Tryptophan Transport in Human Fibroblast Cells— A Functional Characterization (2771 Views since 19 Apr 2011)

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Implication of Tryptophan 2,3-Dioxygenase and its Novel Variants in the Hippocampus and Cerebellum During the Developing and Adult Brain (2571 Views since 23 Jul 2010)

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Tryptophan Oxidative Metabolism Catalyzed by Geobacillus Stearothermophilus: A Thermophile Isolated from Kuwait Soil Contaminated with Petroleum Hydrocarbons (2569 Views since 10 Jan 2011)

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Modulation of Tryptophan Metabolism, Promotion of Neurogenesis and Alteration of Anxiety-Related Behavior in Tryptophan 2,3-Dioxygenase-Deficient Mice (2550 Views since 11 Apr 2011)

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Specificity of the Acute Tryptophan and Tyrosine Plus Phenylalanine Depletion and Loading Tests Part II: Normalisation of the Tryptophan and the Tyrosine Plus Phenylalanine to Competing Amino Acid Ratios in a New Control Formulation (2515 Views since 09 Jun 2010)

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Accelerated Tryptophan Degradation Predicts Poor Survival in Trauma and Sepsis Patients (2480 Views since 10 Jun 2010)

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Alzheimer’s and Seizures: Interleukin-18, Indoleamine 2,3-Dioxygenase and Quinolinic Acid (2350 Views since 15 Oct 2010)

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Editorial ISTRY Special Issue (2311 Views since 10 Jun 2010)

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Rapid Isocratic Liquid Chromatographic Separation and Quantification of Tryptophan and Six kynurenine Metabolites in Biological Samples with Ultraviolet and Fluorimetric Detection (2277 Views since 08 Dec 2010)

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Proteasomal Degradation of Indoleamine 2,3-Dioxygenase  in CD8+ Dendritic Cells is Mediated by Suppressor of Cytokine Signaling 3 (SOCS3) (2276 Views since 10 Jun 2010)

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Kynurenine Pathway Hypothesis: The Nature of the Chronic Fatigue Syndrome (CFS) Revisited (2070 Views since 31 Jul 2011)

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L-Tryptophan Production by Auxotrophic and Analogue Resistant Mutants of Aureobacterium flavescens (1881 Views since 29 May 2011)

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Quinolinic Acid, an Endogenous Molecule Combining Excitotoxicity, Oxidative Stress and Other Toxic Mechanisms (1831 Views since 23 Feb 2012)

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Stochastic Resonance Activity Influences Serum Tryptophan Metabolism in Healthy Human Subjects (1700 Views since 08 Nov 2011)

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A Brief Historic Overview of Clinical Disorders Associated with Tryptophan: The Relevance to Chronic Fatigue Syndrome (CFS) and Fibromyalgia (FM) (1505 Views since 17 Sep 2012)

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A Jerte Valley Cherry-Based Product as a Supply of Tryptophan (1266 Views since 16 Apr 2012)

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Kynurenine Pathway in Skin Cells: Implications for UV-Induced Skin Damage (1247 Views since 03 Jul 2012)

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Fate of Dietary Tryptophan in Young Japanese Women (799 Views since 30 Oct 2012)

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Kynurenic Acid Metabolism in Various Types of Brain Pathology in HIV-1 Infected Patients (690 Views since 13 Dec 2012)

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Transport of Kynurenic Acid by Rat Organic Anion Transporters rOAT1 and rOAT3: Species Difference between Human and Rat in OAT1 (138 Views since 17 Feb 2013)

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What Your Colleagues Say About International Journal of Tryptophan Research
This is my second publication in Int J Tryptophan Res and my experience on this occasion was as great and enjoyable as with my first paper immediately preceding this one.  I commend the Editors and the Editorial Staff of this new and exciting journal for their professionalism and dedication to science and scientific publishing.
Professor Abdulla Badawy (University of Wales Institute Cardiff, Wales, UK)
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