Tryptophan as a biomarker of pregnancy-related immune expression and modulation: an integrative review

BackgroundDegradation pathways of Tryptophan (TRP) are implicated in a spectrum of physiological adaptations and outcomes associated with pregnancy. The immunomodulatory role of TRP and its metabolites through the indoleamine 2,3-dioxygenase (IDO) pathway is particularly relevant to pregnancy due to...

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Main Authors: Stephanie Prescott, Natasa Billeci, Melissa Gotcher, Sapna Patel, Addison Almon, Hailey Morgan, Danielle Abukhalaf, Maureen Groer
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-01-01
Series:Frontiers in Reproductive Health
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Online Access:https://www.frontiersin.org/articles/10.3389/frph.2024.1453714/full
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author Stephanie Prescott
Stephanie Prescott
Natasa Billeci
Melissa Gotcher
Sapna Patel
Addison Almon
Hailey Morgan
Danielle Abukhalaf
Maureen Groer
author_facet Stephanie Prescott
Stephanie Prescott
Natasa Billeci
Melissa Gotcher
Sapna Patel
Addison Almon
Hailey Morgan
Danielle Abukhalaf
Maureen Groer
author_sort Stephanie Prescott
collection DOAJ
description BackgroundDegradation pathways of Tryptophan (TRP) are implicated in a spectrum of physiological adaptations and outcomes associated with pregnancy. The immunomodulatory role of TRP and its metabolites through the indoleamine 2,3-dioxygenase (IDO) pathway is particularly relevant to pregnancy due to its potential influence on maternal and fetal immune tolerance and the mother's health.MethodsA targeted literature search was conducted via PubMed, Web of Science, and Embase, focusing on maternal serum TRP levels in pregnancy. We included original human subject research on maternal serum TRP, published in English within the last five years. We included 16 quality studies with direct measurement of TRP in pregnancy including ten prospective cohorts, four case-control studies, and two cross-sectional studies.ResultsTRP levels are reduced both pre- and postnatally in women with depressive symptoms, but not during pregnancy, though the TRP/Kynurenine pathway is disturbed during pregnancy in women with depressive symptoms, women with prolonged labor, women with gestational hypertension, and in adverse outcomes of pregnancy including prematurity and growth restriction.ConclusionTRP and its metabolites hold promise as biomarkers for various pregnancy-related outcomes. Future research should aim to clarify the mechanisms by which TRP metabolism influences maternal and fetal health outcomes.
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spelling doaj-art-db63d54d0075497a89f06beb496bd9792025-01-23T06:56:16ZengFrontiers Media S.A.Frontiers in Reproductive Health2673-31532025-01-01610.3389/frph.2024.14537141453714Tryptophan as a biomarker of pregnancy-related immune expression and modulation: an integrative reviewStephanie Prescott0Stephanie Prescott1Natasa Billeci2Melissa Gotcher3Sapna Patel4Addison Almon5Hailey Morgan6Danielle Abukhalaf7Maureen Groer8College of Nursing, University of South Florida, Tampa, FL, United StatesSchool of Nursing, Inova Health Services, Fairfax, VA, United StatesCollege of Nursing, University of South Florida, Tampa, FL, United StatesCollege of Nursing, University of South Florida, Tampa, FL, United StatesCollege of Nursing, University of South Florida, Tampa, FL, United StatesCollege of Nursing, University of South Florida, Tampa, FL, United StatesCollege of Nursing, University of South Florida, Tampa, FL, United StatesCollege of Nursing, University of South Florida, Tampa, FL, United StatesCollege of Nursing, University of Tennessee, Knoxville, TN, United StatesBackgroundDegradation pathways of Tryptophan (TRP) are implicated in a spectrum of physiological adaptations and outcomes associated with pregnancy. The immunomodulatory role of TRP and its metabolites through the indoleamine 2,3-dioxygenase (IDO) pathway is particularly relevant to pregnancy due to its potential influence on maternal and fetal immune tolerance and the mother's health.MethodsA targeted literature search was conducted via PubMed, Web of Science, and Embase, focusing on maternal serum TRP levels in pregnancy. We included original human subject research on maternal serum TRP, published in English within the last five years. We included 16 quality studies with direct measurement of TRP in pregnancy including ten prospective cohorts, four case-control studies, and two cross-sectional studies.ResultsTRP levels are reduced both pre- and postnatally in women with depressive symptoms, but not during pregnancy, though the TRP/Kynurenine pathway is disturbed during pregnancy in women with depressive symptoms, women with prolonged labor, women with gestational hypertension, and in adverse outcomes of pregnancy including prematurity and growth restriction.ConclusionTRP and its metabolites hold promise as biomarkers for various pregnancy-related outcomes. Future research should aim to clarify the mechanisms by which TRP metabolism influences maternal and fetal health outcomes.https://www.frontiersin.org/articles/10.3389/frph.2024.1453714/fullbiomarkersfetal outcomespregnancy outcomestryptophantryptophan metabolism
spellingShingle Stephanie Prescott
Stephanie Prescott
Natasa Billeci
Melissa Gotcher
Sapna Patel
Addison Almon
Hailey Morgan
Danielle Abukhalaf
Maureen Groer
Tryptophan as a biomarker of pregnancy-related immune expression and modulation: an integrative review
Frontiers in Reproductive Health
biomarkers
fetal outcomes
pregnancy outcomes
tryptophan
tryptophan metabolism
title Tryptophan as a biomarker of pregnancy-related immune expression and modulation: an integrative review
title_full Tryptophan as a biomarker of pregnancy-related immune expression and modulation: an integrative review
title_fullStr Tryptophan as a biomarker of pregnancy-related immune expression and modulation: an integrative review
title_full_unstemmed Tryptophan as a biomarker of pregnancy-related immune expression and modulation: an integrative review
title_short Tryptophan as a biomarker of pregnancy-related immune expression and modulation: an integrative review
title_sort tryptophan as a biomarker of pregnancy related immune expression and modulation an integrative review
topic biomarkers
fetal outcomes
pregnancy outcomes
tryptophan
tryptophan metabolism
url https://www.frontiersin.org/articles/10.3389/frph.2024.1453714/full
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