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Kynurenine depression

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https://www.readbyqxmd.com/read/29327354/a-validated-liquid-chromatography-high-resolution-tandem-mass-spectrometry-method-for-the-simultaneous-quantitation-of-tryptophan-kynurenine-kynurenic-acid-and-quinolinic-acid-in-human-plasma
#1
Kathrin Arnhard, Florian Pitterl, Barbara Sperner-Unterweger, Dietmar Fuchs, Therese Koal, Herbert Oberacher
Tryptophan (TRP) catabolism via the kynurenine pathway is considered to represent a major link between inflammation and various diseases, including neurodegenerative disorders, depression, schizophrenia, multiple sclerosis, cardiovascular disease, and cancer. The kynurenine pathway and levels of TRP and its metabolites kynurenine (KYN), kynurenic acid (KYNA) and quinolinic acid (QUIN) are well regulated under physiological conditions but may be altered as part of the activated immune response. A simple, sensitive and specific liquid chromatography-time of flight mass spectrometry method was developed for determining levels of the four compounds in human plasma samples...
January 12, 2018: Electrophoresis
https://www.readbyqxmd.com/read/29317604/beta-defensin-1-aryl-hydrocarbon-receptor-and-plasma-kynurenine-in-major-depressive-disorder-metabolomics-informed-genomics
#2
Duan Liu, Balmiki Ray, Drew R Neavin, Jiabin Zhang, Arjun P Athreya, Joanna M Biernacka, William V Bobo, Daniel K Hall-Flavin, Michelle K Skime, Hongjie Zhu, Gregory D Jenkins, Anthony Batzler, Krishna R Kalari, Felix Boakye-Agyeman, Wayne R Matson, Swati S Bhasin, Taisei Mushiroda, Yusuke Nakamura, Michiaki Kubo, Ravishankar K Iyer, Liewei Wang, Mark A Frye, Rima Kaddurah-Daouk, Richard M Weinshilboum
Major depressive disorder (MDD) is a heterogeneous disease. Efforts to identify biomarkers for sub-classifying MDD and antidepressant therapy by genome-wide association studies (GWAS) alone have generally yielded disappointing results. We applied a metabolomics-informed genomic research strategy to study the contribution of genetic variation to MDD pathophysiology by assaying 31 metabolites, including compounds from the tryptophan, tyrosine, and purine pathways, in plasma samples from 290 MDD patients. Associations of metabolite concentrations with depressive symptoms were determined, followed by GWAS for selected metabolites and functional validation studies of the genes identified...
January 10, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29307018/the-role-of-tryptophan-metabolism-in-postpartum-depression
#3
REVIEW
Kai-Ming Duan, Jia-Hui Ma, Sai-Ying Wang, ZhengDong Huang, YingYong Zhou, HeYa Yu
The Postpartum depression (PPD) is the most common postpartum psychiatric disorder, afflicting approximately 10%-20% of new mothers. Clinical symptoms of the PPD include depressive disorder, agitation, insomnia, anxiety and confusion, resulting in an increase in suicidal tendencies, thereby having significant impacts on the puerpera, newborn and their family. A growing body of data indicate a role for alterations in tryptophan metabolism in the PPD. The metabolism of tryptophan produces an array of crucial factors that can differentially regulate key physiological processes linked to the PPD...
January 6, 2018: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29301550/role-of-the-indoleamine-2-3-dioxygenase-kynurenine-pathway-of-tryptophan-metabolism-in-behavioral-alterations-in-a-hepatic-encephalopathy-rat-model
#4
Xi Jiang, Lexing Xu, Lin Tang, Fuhe Liu, Ziwei Chen, Jiajia Zhang, Lei Chen, Cong Pang, Xuefeng Yu
BACKGROUND: This study aims to explore the role of indoleamine-2,3-dioxygenase (IDO)/kynurenine (KYN) pathway of tryptophan (TRY) metabolism in behavioral alterations observed in hepatic encephalopathy (HE) rats. METHODS: Expression levels of proinflammatory cytokines were tested by QT-PCR and ELISA, levels of IDOs were tested by QT-PCR and Western blot, and levels of 5-hydroxytryptamine (5-HT), KYN, TRY, 3-hydroxykynurenine (3-HK), and kynurenic acid (KA) in different brain regions were estimated using HPLC...
January 4, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29258398/pilot-study-of-metabolomics-and-psychoneurological-symptoms-in-women-with-early-stage-breast-cancer
#5
Debra E Lyon, Angela Starkweather, Yingwei Yao, Timothy Garrett, Debra Lynch Kelly, Victoria Menzies, Paweł Dereziński, Susmita Datta, Sreelakshmy Kumar, Colleen Jackson-Cook
Many women with breast cancer experience symptoms of pain, fatigue, and depression, collectively known as psychoneurologic (PN) symptoms, during and after chemotherapy treatment. Evidence that inflammatory dysfunction related to cancer and its treatments contributes to the development and persistence of PN symptoms through several interrelated pathways is accumulating. However, a major limiting factor in more precisely identifying the biological mechanisms underlying these symptoms is the lack of biological measures that represent a holistic spectrum of biological responses...
January 1, 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/29241670/glia-and-tissue-specific-changes-in-the-kynurenine-pathway-after-treatment-of-mice-with-lipopolysaccharide-and-dexamethasone
#6
Carlos R Dostal, Nicolaus S Gamsby, Marcus A Lawson, Robert H McCusker
Behavioral symptoms associated with mood disorders have been intimately linked with immunological and psychological stress. Induction of immune and stress pathways is accompanied by increased tryptophan entry into the Kynurenine (Kyn) Pathway as governed by the rate-limiting enzymes indoleamine/tryptophan 2,3-dioxygenases (DO's: Ido1, Ido2, Tdo2). Indeed, elevated DO expression is associated with inflammation- and stress-related depression symptoms. Here we examined central (brain, astrocyte and microglia) and peripheral (lung, liver and spleen) DO expression in mice treated intraperitoneally with lipopolysaccharide (LPS) and dexamethasone (DEX) to model the response of the Kyn Pathway to inflammation and glucocorticoids...
December 11, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29224960/persons-with-secondary-progressive-and-relapsing-remitting-multiple-sclerosis-reveal-different-responses-of-tryptophan-metabolism-to-acute-endurance-exercise-and-training
#7
Jens Bansi, Christina Koliamitra, Wilhelm Bloch, Niklas Joisten, Alexander Schenk, Matthew Watson, Jan Kool, Dawn Langdon, Ulrik Dalgas, Jürg Kesselring, Philipp Zimmer
Disturbances in Tryptophan metabolism play a crucial role in multiple sclerosis (MS). Exercise is suspected to counteract the progress of MS and its side effects. Current research suggests alterations of Tryptophan metabolism in healthy individuals in response to exercise. We investigated the influence of acute aerobic exercise and training on Tryptophan metabolism in 57 inpatients with relapsing remitting ((RRMS) n=33) and secondary progressive ((SPMS) n=24) MS. Serotonin increased after training, whereas the kynurenine pathway was only activated in persons with RRMS...
December 6, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29217494/regulation-of-the-kynurenine-metabolism-pathway-by-xiaoyao-san-and-the-underlying-effect-in-the-hippocampus-of-the-depressed-rat
#8
Jiajia Wang, Xiaofang Li, Shugui He, Lijun Hu, Jiewen Guo, Xiangning Huang, Jinqing Hu, Yaoqun Qi, Bin Chen, Dewei Shang, Yuguan Wen
ETHNOPHARMACOLOGICAL RELEVANCE: Xiaoyao San (XYS) is a classic Chinese herbal formula for treatment of depression. The present study aimed to investigate the antidepressant effects of XYS in a rat model of chronic unpredictable mild stress (CUMS) and the underlying mechanisms. MATERIALS AND METHODS: A CUMS rat model of depression was established via 4 weeks of unpredictable stimulation. Then the rats were orally administered paroxetine and XYS for 2 weeks with continued stress...
December 4, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29201045/functional-bowel-disorders-are-associated-with-a-central-immune-activation
#9
Per G Farup, Thor Ueland, Knut Rudi, Stian Lydersen, Knut Hestad
Background: Subjects with depression and unexplained neurological symptoms have a high prevalence of gastrointestinal comorbidity probably related to the brain-gut communication. This study explored associations between functional gastrointestinal disorders (FGID) and inflammatory markers in subjects with these disorders. Methods: The FGID, including irritable bowel syndrome (IBS), were classified according to the Rome III criteria, and degree of symptoms was assessed with IBS symptom severity score (IBS-SSS)...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/29197195/oxidative-and-nitrosative-stress-as-well-as-the-tryptophan-catabolites-pathway-in-depressive-disorders
#10
Paulina Wigner, Piotr Czarny, Piotr Galecki, Tomasz Sliwinski
The aim of this paper is to elucidate the role of oxidative and nitrosative stress as well as the tryptophan catabolites pathway in the development of depression and the mechanism of action of antidepressant drugs, based on the available literature. According to the World Health Organization (WHO), an estimated 350 million people worldwide suffer from depression. The pathogenesis of depressive disorders has not been fully explained yet and several causes of this disease have been suggested. There is evidence for the involvement of several interconnected biochemical pathways, including oxidative and nitrosative stress as well as the tryptophan catabolites pathway...
December 2017: Psychiatria Danubina
https://www.readbyqxmd.com/read/29195782/hmgb1-mediates-depressive-behavior-induced-by-chronic-stress-through-activating-the-kynurenine-pathway
#11
Bo Wang, Yong-Jie Lian, Wen-Jun Su, Wei Peng, Xin Dong, Lin-Lin Liu, Hong Gong, Ting Zhang, Chun-Lei Jiang, Yun-Xia Wang
Our previous study has reported that the proactive secretion and role of central high mobility group box 1 (HMGB1) in lipopolysaccharide-induced depressive behavior. Here, the potential mechanism of HMGB1 mediating chronic-stress-induced depression through the kynurenine pathway (KP) was further explored both in vivo and in vitro. Depression model was established with the 4-week chronic unpredictable mild stress (CUMS). Sucrose preference and Barnes maze test were performed to reflect depressive behaviors. The ratio of kynurenine (KYN)/tryptophan (Trp) represented the enzyme activity of indoleamine-2,3-dioxygenase (IDO)...
November 28, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29183965/regulation-of-proinflammatory-monocyte-activation-by-the-kynurenine-ahr-axis-underlies-immunometabolic-control-of-depressive-behavior-in-mice
#12
Xiaojie Zang, Xiao Zheng, Yuanlong Hou, Miaomiao Hu, Hong Wang, Xiaoqiang Bao, Fang Zhou, Guangji Wang, Haiping Hao
Elevated kynurenine (Kyn) production from tryptophan (Trp) metabolism is a biomarker of immune dysregulation in depression, but its mechanistic contributions to the behavioral symptoms are poorly defined. In this study, Kyn was shown to be a metabolic regulator of proinflammatory monocytes that orchestrated peripheral immune activation and neuroinflammation in depressive mice. Kyn-induced depressive behavior was paralleled by brain infiltration of proinflammatory monocytes and astrocytic activation. Kyn enhanced chemokine (C-C motif) ligand-2-mediated chemotaxis of monocytes and their proinflammatory capability on cocultured astrocytes in vitro, which involved the activation of aryl hydrocarbon receptor (AhR) signaling...
November 28, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29153615/inflammation-induced-depression-its-pathophysiology-and-therapeutic-implications
#13
REVIEW
Sang Won Jeon, Yong-Ku Kim
Inflammation is not the only cause of depression and cannot explain its entire pathophysiology, but it is an important pathogenic factor that explains one possible mechanism of depression, with the kynurenine (KYN) pathway of tryptophan at its center. In particular, greater impairment seems to exist in the KYN pathway in inflammation-induced depression related to immunotherapy, autoimmune disease, and infection. In patients with these conditions, immunopharmacology is likely to be an important therapy. To develop this therapy, clear evidence of the immune-KYN pathway must be established via multiple types of experiments...
December 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29141444/associations-among-obesity-inflammation-and-tryptophan-catabolism-in-pregnancy
#14
Maureen Groer, Dietmar Fuchs, Allyson Duffy, Adetola Louis-Jacques, Amy D'Agata, Teodor T Postolache
OBJECTIVE: To evaluate relationships among obesity in pregnancy and plasma levels of tryptophan (TRP) and kynurenine (KYN), inflammatory markers, and depressed mood. METHODS: Pregnant women ( N = 374) were enrolled, and data were collected at a mean gestation of 20 weeks in this cross-sectional study. Plasma was analyzed for TRP, KYN, neopterin, and nitrite levels. Women completed demographic and mood scales. RESULTS: There was a statistically significant inverse correlation between body mass index (BMI) and TRP and positive correlations between BMI and KYN and the kynurenine/tryptophan (KYN/TRP) ratio...
January 1, 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/29109914/revisiting-the-tryptophan-serotonin-deficiency-and-the-inflammatory-hypotheses-of-major-depression-in-a-biopsychosocial-approach
#15
Andreas Baranyi, Omid Amouzadeh-Ghadikolai, Dirk von Lewinski, Robert J Breitenecker, Hans-Bernd Rothenhäusler, Christoph Robier, Maria Baranyi, Simon Theokas, Andreas Meinitzer
Background: The aim of this cross-sectional study was to identify important biopsychosocial correlates of major depression. Biological mechanisms, including the inflammatory and the tryptophan-serotonin deficiency hypotheses of major depression, were investigated alongside health-related quality of life, life satisfaction, and social support. Methods: The concentrations of plasma tryptophan, plasma kynurenine, plasma kynurenic acid, serum quinolinic acid, and the tryptophan breakdown to kynurenine were determined alongside health-related quality of life (Medical Outcome Study Form, SF-36), life satisfaction (Life Satisfaction Questionnaire, FLZ), and social support (Social Support Survey, SSS) in 71 depressive patients at the time of their in-patient admittance and 48 healthy controls...
2017: PeerJ
https://www.readbyqxmd.com/read/29069807/chronic-high-dose-of-captopril-induces-depressive-like-behaviors-in-mice-possible-mechanism-of-regulatory-t-cell-in-depression
#16
Hyun-Sun Park, Arum Han, Hye-Lim Yeo, Min-Jung Park, Min-Jung You, Hyun Jin Choi, Chang-Won Hong, Sang-Hyuk Lee, Seung Hyun Kim, Borah Kim, Min-Soo Kwon
Major depression has various types of symptoms and disease courses with inconsistent response to monoamine-related antidepressants. Thus, monoamine theory may not be the only pathophysiologic pathway relevant to depression. Recently, it has been suggested that regulatory T cell (Treg) is associated with depression. Based on our previous study that showed decreased regulatory T cell (Treg) population following chronic high-dose captopril (CHC, 40 mg/kg/day * 21 days) administration, we examined whether CHC alone can induce depressive-like behaviors in mice even without stressful stimuli...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29065338/differences-in-the-association-of-inflammation-and-tryptophan-with-depressive-symptoms-between-white-and-non-white-chronic-dialysis-patients
#17
Gertrud L Haverkamp, Wim L Loosman, Robbert W Schouten, Casper F Franssen, Ido P Kema, Merel van Diepen, Friedo W Dekker, Carl E Siegert, Adriaan Honig
OBJECTIVE: Possibly, different biochemical parameters are involved in the development of depressive symptoms in white and non-white dialysis patients. We examined whether the association between inflammation and depressive symptoms and between tryptophan and depressive symptoms differs between white and non-white dialysis patients and whether the association between inflammation and depressive symptoms is mediated by tryptophan degradation along the kynurenine pathway in both groups. METHOD: Depressive symptoms were measured with the BDI-II...
October 13, 2017: General Hospital Psychiatry
https://www.readbyqxmd.com/read/29062805/evaluation-of-the-effect-of-soybean-diet-on-interferon-%C3%AE-induced-depression-in-male-mice
#18
Yazdan Azimi Fashi, Azadeh Mesripour, Valiollah Hajhashemi
OBJECTIVE: Interferon-α (IFN) therapy can cause depressive symptom which may lead to drug discontinuation. By interfering with tryptophan pathway, the available level of tryptophan required for serotonin synthesis decreases which could be related to depression. The aim of this study was to evaluate whether soybean diet could improve IFN-induced depression. MATERIALS AND METHODS: Male mice weighing 28±3 g were used in the forced swimming test (FST) as an animal model of depression; also, locomotor activity was recorded...
September 2017: Avicenna Journal of Phytomedicine
https://www.readbyqxmd.com/read/29046648/the-relationships-among-tryptophan-kynurenine-indoleamine-2-3-dioxygenase-depression-and-neuropsychological-performance
#19
Knut A Hestad, Knut Engedal, Jon E Whist, Per G Farup
It has been suggested that the metabolic enzyme indoleamine 2,3-dioxygenase (IDO) is a biological mediator of inflammation related to the psychopathology of depression, with a Kynurenine (KYN) increase in the Tryptophan (TRP) metabolic pathway, resulting in reduced Serotonin. In this study, we examined KYN, TRP, and the ratio of KYN to TRP concentrations × 10(3) (KT Ratio) in serum and cerebrospinal fluid (CSF) in (a) a group of depressed patients and (b) a control group of patients referred to a neurologic outpatient clinic for whom no specific diagnosis could be established...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28982597/chronic-trans-astaxanthin-treatment-exerts-antihyperalgesic-effect-and-corrects-co-morbid-depressive-like-behaviors-in-mice-with-chronic-pain
#20
Xi Jiang, Qizhi Yan, Fuhe Liu, Changfeng Jing, Lianshu Ding, Lijin Zhang, Cong Pang
Patients suffering from chronic neuropathic pain are at high risk of co-morbid depression, which burdens healthcare. Trans-astaxanthin has been shown in our previous studies to exert antidepressant-like effect. This work aimed to investigate the effects of trans-astaxanthin on pain-related depressive-like behaviors in mice and explored the mechanism(s). Chronic constriction injury (CCI) model was used in this research. Chronic pain was evaluated by thermal hyperalgesia in Hargreaves test and mechanical allodynia in von Frey test, depressive-like behaviors were evaluated by immobility time in forced swim test and tail suspension test...
October 2, 2017: Neuroscience Letters
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