Overview Submission Instructions Recent Publications Frequently Asked Questions Research Topics

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International Journal of Tryptophan Research

International Journal of Tryptophan Research is an international, peer reviewed journal that focuses on all subjects related to tryptophan research, including isolation, functionality, interactions, analysis, synthesis and industrial production.

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Subject Neurosciences

Impact Factor 4.1

Quartile Q1

Open Access Type Open

ISSN 1178-6469

eISSN 1178-6469

Invitation Only No

Cost Range Article processing charges apply for hybrid open access journals, and institutional agreements, prepaid accounts, or discounts may help cover APCs.

Submission Instructions

International Journal of Tryptophan Research accepts the following article types. Click on an article type to view submission instructions.

Original Research

Cover Letter Cover letter is required only to disclose any third-party writing or editing assistance or submission made on behalf of the authors by someone not listed as an author. Cover letter must state any third-party writing or editing assistance and whether the submission was made on behalf of the authors by someone not listed as an author.

Abstract Abstract is required. Abstract must be 250 words. Abstract must be unstructured.

Manuscript Manuscript must include clearly defined sections with clear heading levels and an unstructured abstract placed between the title and main body. Manuscript must include at least 5 keywords after the abstract and a 'Statements and Declarations' section at the end of the article with each required subheading, using 'Not applicable' where relevant.

References References and citations must follow AMA style. References must be cited in consecutive numerical order using superscript Arabic numerals, and the reference list must list all authors unless there are more than 6, in which case the first 3 are followed by 'et al.'.

Figures & Tables Figures, charts, and tables created in Word must be included in the main text, while figures and other files created outside Word must be submitted separately with a placeholder note in the text. Figures must be numbered consecutively and include a number and title, while tables must be editable text in Word with a number and title and must not be submitted as images.

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Reviews

Cover Letter Cover letter is required to disclose any third-party writing or editing assistance and any submission made on behalf of the authors by a non-author. Cover letter must state any third-party writing or editing assistance and whether the submission was made on behalf of the authors by someone not listed as an author.

Abstract Abstract is required. Abstract must be 250 words. Abstract must be unstructured.

Manuscript Manuscript must include clearly defined sections and a 'Statements and Declarations' section at the end of the article after the Acknowledgements and Author Contributions sections if applicable. Manuscript must include at least 5 keywords after the abstract and include each required subheading within the 'Statements and Declarations' section, stating 'Not applicable' under any declaration heading that does not apply.

References References must follow AMA style. References must be cited in consecutive numerical order using superscript Arabic numerals, and the reference list must list all authors unless there are more than 6 authors, in which case the first 3 are followed by 'et al.'.

Figures & Tables Figures, charts, and tables created in Word must be included in the main text, while figures and other files created outside Word must be submitted separately with a placeholder note in the text for separately submitted figures. Figures must be numbered consecutively and include a number and title, while tables must be labeled as tables, include a number and title plus a header row and/or column, and be editable in Word rather than submitted as images.

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Letter To The Editor

Cover Letter Cover letter must disclose any third-party writing or editing assistance and whether the submission was made on behalf of the authors by someone not listed as an author.

Abstract Abstract must be unstructured and limited to 250 words. Abstract must be unstructured.

Manuscript Manuscript must include clearly defined sections and a section headed 'Statements and Declarations' at the end after the Acknowledgements and Author Contributions sections if applicable. Manuscript must include at least 5 keywords after the abstract and include each required subheading under 'Statements and Declarations,' stating 'Not applicable' where relevant.

Figures & Tables Figures, charts, and tables created in Word must be included in the main text, while figures and other files created outside Word must be submitted separately with a placeholder note in the text. Tables must be editable text with a number and title, and figures must be numbered consecutively and include a number and title.

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Short Report

Cover Letter If writing or editing assistance from a third party was received or the submission was made on behalf of the authors by a non-author, this must be stated in the covering letter.

Abstract An abstract is required. Abstract must be 250 words. Abstract must be unstructured.

Manuscript Short Reports should be no longer than approximately 1,000 words excluding references. Sections and heading levels must be clearly defined and follow a logical order. Include at least 5 keywords after the abstract and a 'Statements and Declarations' section at the end of the article with each required subheading.

References References and citations must follow AMA style. References must be cited in consecutive numerical order using superscript Arabic numerals, and in the reference list all authors must be listed unless there are more than 6, in which case the first 3 are followed by 'et al.'.

Figures & Tables Figures, charts, and tables created in Word must be included in the main text, while figures and other files created outside Word must be submitted separately with a placeholder note in the text. Figures must be numbered consecutively and include a number and title, and tables must be editable text with a number and title rather than images.

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Technical Advances

Cover Letter Cover letter is required if writing or editing assistance was received from a third party or if the submission is made on behalf of the authors by someone not listed as an author. Cover letter must disclose any third-party writing or editing assistance and state if the submission was made on behalf of the authors by a non-author.

Abstract Abstract is required. Abstract must be unstructured and limited to 250 words. Abstract must be unstructured.

Manuscript Manuscript must include clearly defined sections with clear heading levels in a logical order, and it must contain a 'Statements and Declarations' section at the end after the Acknowledgements and Author Contributions sections if applicable. Manuscript must include at least 5 keywords after the abstract and a 'Statements and Declarations' section containing each required subheading, with 'Not applicable' stated under any declaration heading that does not apply.

References References and citations must follow AMA style. References must be cited in consecutive numerical order using superscript Arabic numerals, and in the reference list all authors must be named unless there are more than 6, in which case the first 3 are listed followed by 'et al.'.

Figures & Tables Figures, charts, and tables created in Word must be included in the main text, while figures and other files created outside Word must be submitted separately with a placeholder note in the running text for separately submitted figures. Figures must be numbered consecutively and include a number and title, and tables must be labeled as tables with a number, title, header row and/or column, and be editable text rather than images.

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Recent Publications

Tryptophan Supplementation Reduces Schizophrenia-Like Symptoms in Apomorphine Treated Rats: Role of D2, GABA, and Glutamate Receptor Expression

Shazia Nawaz, Sadia Basharat Ali, Rushda Afroz, Huma Ikram, Faisal Khan, Darakhshan Jabeen Haleem

10.1177/11786469261478896

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The Kynurenine Metabolite 3-Hydroxykynurenine is Associated With Risk of Heart Failure in Patients With Predominantly Stable Coronary Artery Disease

Anders Lund, Jan Erik Nordrehaug, Kjell-Christian Flo, Kyrre Hasås Toresen, Christian Alsing, Adrian McCann, Per Magne Ueland, Ottar Nygård, Lasse M. Giil

10.1177/11786469261479281

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Systematic Screening of Tryptophan Metabolism Identifies Site- and Microbiota-Dependent Signatures of Tryptophan Utilization in Experimental Colitis

Lina Wehkamp, Abrar I. Alsaadi, Danielle M. M. Harris, Meiping Yu, Taous Mekdoud, Johanna Bornhäuser, Eva Springer, Clara Gilloteau, Anant A. Pothakamury, Jaclyn D. Smith, Brenita C. Jenkins, Martina Guggeis, Felix Sommer, Silvio Waschina, Philip Rosenstiel, Stefan Schreiber, Melanie R. McReynolds, Konrad Aden

10.1177/11786469261472316

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Up-Regulation of Anthranilic Acid Formation and Pro-Cognitive Effect of Indoleamine 2,3-Dioxygenase Inhibition

Gregory Oxenkrug, Stefano Comai

10.1177/11786469261472317

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Urinary Tryptophan Metabolites, Trace Element Status, and Autism Spectrum Disorder: An Integrated Metabolomics–Elementomics Study in Children

Joško Osredkar, Kristina Kumer, Maja Jekovec Vrhovšek, Damjan Osredkar, Alenka France Štiglic, Gorazd Avguštin, Teja Fabjan

10.1177/11786469261467154

View Publication

Frequently asked questions

How long does it take to publish?

Median time to first decision is 8 days, time in peer review is 58 days, time from submission to acceptance is 176 days, and time from acceptance to online publication is 48 days.

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Is a cover letter required?

A covering letter is required when writing assistance or third-party submission is involved, and third-party submissions must also be disclosed in the acknowledgements and covering letter.

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What are the publication costs?

Article processing charges apply for hybrid open access journals. Institutional open access agreements, prepaid accounts, or discounts may help cover APCs.

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Research Topics

Tryptophan and brain disorders Stress Responses and Cortisol Gut microbiota and health Bipolar Disorder and Treatment Diet and metabolism studies Circadian rhythm and melatonin Neurotransmitter Receptor Influence on Behavior Neuroinflammation and Neurodegeneration Mechanisms Neuroendocrine regulation and behavior Sirtuins and Resveratrol in Medicine Mental Health Research Topics Maternal Mental Health During Pregnancy and Postpartum Treatment of Major Depression Fibromyalgia and Chronic Fatigue Syndrome Research Schizophrenia research and treatment Biochemical Acid Research Studies Calcium signaling and nucleotide metabolism Sleep and related disorders Pharmacogenetics and Drug Metabolism Analytical Chemistry and Chromatography Genetic Neurodegenerative Diseases Immune cells in cancer Long-Term Effects of COVID-19 Exercise and Physiological Responses Multiple Sclerosis Research Studies

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