1
|
Duarte MJ, Tien PC, Kardashian A, Ma Y, Hunt P, Kuniholm MH, Adimora AA, Fischl MA, French AL, Topper E, Konkle-Parker D, Minkoff H, Ofotokun I, Plankey M, Sharma A, Price JC. Microbial Translocation and Gut Damage Are Associated With an Elevated Fast Score in Women Living With and Without HIV. Open Forum Infect Dis 2024; 11:ofae187. [PMID: 38680610 PMCID: PMC11055391 DOI: 10.1093/ofid/ofae187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 03/28/2024] [Indexed: 05/01/2024] Open
Abstract
Background Steatohepatitis is common in persons living with HIV and may be associated with gut microbial translocation (MT). However, few studies have evaluated the gut-liver axis in persons living with HIV. In the Women's Interagency HIV Study, we examined the associations of HIV and circulating biomarkers linked to MT and gut damage using the FibroScan-aspartate aminotransferase (FAST) score, a noninvasive surrogate for steatohepatitis with advanced fibrosis. Methods Among 883 women with HIV and 354 without HIV, we used multivariable regression to examine the associations of HIV and serum biomarkers linked to MT and gut damage (kynurenine and tryptophan ratio, intestinal fatty acid-binding protein, soluble CD14, and soluble CD163) with a log-transformed FAST score after adjusting for key covariates. We used a path analysis and mediation models to determine the mediating effect of each biomarker on the association of HIV with FAST. Results HIV infection was associated with a 49% higher FAST score. MT biomarker levels were higher in women with HIV than women without HIV (P < .001 for each). MT biomarkers mediated 13% to 32% of the association of HIV and FAST score. Conclusions Biomarkers linked to MT and gut damage are associated with a higher FAST score and mediate the association of HIV with a higher FAST score. Our findings suggest that MT may be an important mechanism by which HIV increases the risk of steatohepatitis with advanced fibrosis.
Collapse
Affiliation(s)
- Maria J Duarte
- Division of Gastroenterology and Hepatology, Department of Medicine, University of California San Francisco, San Francisco, California, USA
| | - Phyllis C Tien
- Department of Veterans Affairs Medical Center and Department of Medicine, University of California San Francisco, San Francisco, California, USA
| | - Ani Kardashian
- Division of Gastroenterology and Liver Diseases, University of Southern California, Los Angeles, California, USA
| | - Yifei Ma
- Department of Veterans Affairs Medical Center and Department of Medicine, University of California San Francisco, San Francisco, California, USA
| | - Peter Hunt
- Division of Experimental Medicine, University of California San Francisco, San Francisco, California, USA
| | - Mark H Kuniholm
- Department of Epidemiology and Biostatistics, University at Albany, State University of New York, Rensselaer, New York, USA
| | - Adaora A Adimora
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Margaret A Fischl
- Department of Medicine, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Audrey L French
- Department of Medicine, CORE Center/Stroger Hospital of Cook County, Chicago, Illinois, USA
| | - Elizabeth Topper
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Deborah Konkle-Parker
- School of Nursing, Medicine and Population Health, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Howard Minkoff
- Department of Obstetrics and Gynecology, Downstate Health Sciences University, State University of New York, Brooklyn, New York, USA
| | - Ighovwerha Ofotokun
- Department of Medicine, School of Medicine, Emory University, Atlanta, Georgia, USA
| | - Michael Plankey
- Department of Medicine, Georgetown University Medical Center, Washington, DC, USA
| | - Anjali Sharma
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Jennifer C Price
- Division of Gastroenterology and Hepatology, Department of Medicine, University of California San Francisco, San Francisco, California, USA
| |
Collapse
|
2
|
Chung SH, Yoo D, Ahn TB, Lee W, Hong J. Profiling Analysis of Tryptophan Metabolites in the Urine of Patients with Parkinson's Disease Using LC-MS/MS. Pharmaceuticals (Basel) 2023; 16:1495. [PMID: 37895965 PMCID: PMC10610059 DOI: 10.3390/ph16101495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/05/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Although Parkinson's disease (PD) is a representative neurodegenerative disorder and shows characteristic motor impediments, the pathophysiological mechanisms and treatment targets for PD have not yet been clearly identified. Since several tryptophan metabolites produced by gut microbiota could pass the blood-brain barrier and, furthermore, might influence the central nervous system, tryptophan metabolites within the indole, kynurenine, and serotonin metabolic pathways might be the most potent targets for PD development. Furthermore, most metabolites are circulated via the blood, play roles in and/or are metabolized via the host organs, and finally are excreted into the urine. Therefore, profiling the overall tryptophan metabolic pathways in urine samples of patients with PD is important to understanding the pathological mechanisms, finding biomarkers, and discovering therapeutic targets for PD. However, the development of profiling analysis based on tryptophan metabolism pathways in human urine samples is still challenging due to the wide physiological ranges, the varied signal response, and the structural diversity of tryptophan metabolites in complicated urine matrices. In this study, an LC-MS/MS method was developed to profile 21 tryptophan metabolites within the indole, kynurenine, and serotonin metabolic pathways in human urine samples using ion-pairing chromatography and multiple reaction monitoring determination. The developed method was successfully applied to urine samples of PD patients (n = 41) and controls (n = 20). Further, we investigated aberrant metabolites to find biomarkers for PD development and therapeutic targets based on the quantitative results. Unfortunately, most tryptophan metabolites in the urine samples did not present significant differences between control and PD patients, except for indole-3-acetic acid. Nonetheless, indole-3-acetic acid was reported for the first time for its aberrant urinary levels in PD patients and tentatively selected as a potential biomarker for PD. This study provides accurate quantitative results for 21 tryptophan metabolites in biological samples and will be helpful in revealing the pathological mechanisms of PD development, discovering biomarkers for PD, and further providing therapeutic targets for various PD symptoms. In the near future, to further investigate the relationship between gut microbial metabolites and PD, we will employ studies on microbial metabolites using plasma and stool samples from control and PD patients.
Collapse
Affiliation(s)
- So Hyeon Chung
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea;
| | - Dallah Yoo
- Department of Neurology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (D.Y.); (T.-B.A.)
| | - Tae-Beom Ahn
- Department of Neurology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (D.Y.); (T.-B.A.)
| | - Wonwoong Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Woosuk University, Wanju 55338, Republic of Korea
| | - Jongki Hong
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea;
| |
Collapse
|
3
|
Yurt EF, Biçer C, Serdar MA, Akan S, Erten Ş. Accelerated kynurenine pathway downregulates immune activation in patients with axial spondyloarthritis. Cytokine 2023; 169:156247. [PMID: 37295242 DOI: 10.1016/j.cyto.2023.156247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 03/27/2023] [Accepted: 05/27/2023] [Indexed: 06/12/2023]
Abstract
Various studies reported that the kynurenine (Kyn) pathway plays a pivotal role in regulating the balance between activation and inhibition of the immune system. Proinflammatory cytokines can accelerate the Kyn pathway by altering indoleamine (2, 3)- dioxygenase (IDO) allosteric enzyme activity. Excessive cytokine release and immune system activation have essential roles in the pathogenesis of axial spondyloarthritis (axSpA). We aimed to investigate the relationship of the Kyn pathway with proinflammatory cytokines and with the severity of the disease in patients with axSpA. The study included 104 patients with axSpA and 54 healthy volunteers. The severity of the disease was determined by Bath Ankylosing Spondylitis Disease Activity Index (BASDAI). The Kyn pathway was evaluated by IDO activity calculated with Kyn/Tryptophan (Trp) ratio. Plasma Trp and Kyn concentrations were measured with tandem mass spectrometry. Serum IL 17/23 and IFN-γ concentrations were measured with ELISA. These groups were compared in terms of IDO, IL-17, IL-23, IFN-γ, and BASDAI. Plasma IDO activity was significantly increased, however, serum IL-17, IL-23, and IFN-γ levels were significantly decreased in patients compared to healthy volunteers. While IFN-γ was positively correlated with the severity of the disease (p = 0.02), it also had a significant inverse correlation with IDO activity (p < 0.001). However, these correlations are weak. As a result of this study, the Kyn pathway is accelerated and proinflammatory cytokine levels are decreased in patients with axSpA. All of these results with an indirect weak negative association between high IDO and low disease activity suggest that an accelerated Kyn pathway may limit the immune system activation in axSpA disease.
Collapse
Affiliation(s)
- Emine Feyza Yurt
- Medical Biochemistry, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Türkiye.
| | - Cemile Biçer
- Medical Biochemistry, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Türkiye
| | - Muhittin A Serdar
- Medical Biochemistry, Faculty of Medicine, Acıbadem University, Türkiye
| | - Selçuk Akan
- Rheumatology, Ankara City Hospital, Ankara, Türkiye
| | - Şükran Erten
- Rheumatology, Ankara City Hospital, Ankara, Türkiye; Rheumatology, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara, Türkiye
| |
Collapse
|
4
|
Mrštná K, Kujovská Krčmová L, Švec F. Advances in kynurenine analysis. Clin Chim Acta 2023:117441. [PMID: 37321530 DOI: 10.1016/j.cca.2023.117441] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/17/2023]
Abstract
Kynurenine, the first product of tryptophan degradation via the kynurenine pathway, has become one of the most frequently mentioned biomarkers in recent years. Its levels in the body indicate the state of the human physiology. Human serum and plasma are the main matrixes used to evaluate kynurenine levels and liquid chromatography is the dominant technique for its determination. However, their concentrations in blood do not always correspond to the levels in other matrixes obtained from the affected individuals. It is therefore important to decide when it is appropriate to analyse kynurenine in alternative matrices. However, liquid chromatography may not be the best option for the analysis. This review presents alternatives that can be used and summarizes the features that need to be considered prior to kynurenine determination. Possible approaches to kynurenine analysis in a variety of human matrixes, their challenges, and limitations are critically discussed.
Collapse
Affiliation(s)
- K Mrštná
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic; The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic
| | - L Kujovská Krčmová
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic; The Department of Clinical Biochemistry and Diagnostics, University Hospital Hradec Králové, Sokolská 581, 50005 Hradec Králové, Czech Republic.
| | - F Švec
- The Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203/8, 50005 Hradec Králové, Czech Republic
| |
Collapse
|
5
|
Abusoglu S, Eryavuz Onmaz D, Abusoglu G, Humeyra Yerlikaya F, Unlu A. Measurement of kynurenine pathway metabolites by tandem mass spectrometry. J Mass Spectrom Adv Clin Lab 2023; 28:114-121. [PMID: 37113385 PMCID: PMC10127116 DOI: 10.1016/j.jmsacl.2023.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 04/07/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Objectives Recent studies have shown that derangements in kynurenine pathway metabolite levels are associated with various pathologies such as neurodegenerative diseases, schizophrenia, depression, bipolar disorder, rheumatoid arthritis, and cancer. Therefore, reliable, accurate, fast, and multiplex measurement methods for kynurenines have become increasingly important. This study aimed to validate a new mass spectrometric method for analyzing tryptophan metabolites. Methods A tandem mass spectrometric method, including protein precipitation and evaporation steps, was developed to measure serum levels of tryptophan, kynurenine, kynurenic acid, 3-hydroxykynurenine, and 3-hydroxyanthranilic acid. Samples were separated using a Phenomenex Luna C18 reversed-phase column. The kynurenine pathway metabolites were detected by tandem mass spectrometry. The developed method was validated according to Clinical & Laboratory Standards Institute (CLSI) guidelines and applied to hemodialysis samples. Results The developed method was linear at the concentrations of 48.8 - 25,000, 0.98 - 500, 1.2-5000, 1.2-5000, and 0.98-250 ng/mL for tryptophan, kynurenic acid, kynurenine, 3-hydroxyanthranilic acid, and 3-hydroxykynurenine, respectively. The imprecisions were less than 12 %. The median serum concentrations of tryptophan, kynurenine, kynurenic acid, 3-hydroxykynurenine, and 3-hydroxyanthranilic acid were 10530, 1100, 218, 17.6, and 25.4 ng/mL in pre-dialysis blood samples, respectively. They were 4560, 664, 135, 7.4, and 12.8 ng/mL in post-dialysis blood samples, respectively. Conclusions A fast, simple, cost-effective, accurate, robust, and validated tandem mass spectrometric method was developed, and the method was successfully used for the quantitation of kynurenine pathway metabolite concentrations in hemodialysis patients.
Collapse
Affiliation(s)
- Sedat Abusoglu
- Department of Biochemistry, Selcuk University Faculty of Medicine, Konya, Turkey
| | - Duygu Eryavuz Onmaz
- Department of Biochemistry, Selcuk University Faculty of Medicine, Konya, Turkey
- Corresponding author.
| | - Gulsum Abusoglu
- Department of Medical Laboratory Techniques, Selcuk University Vocational School of Health, Konya, Turkey
| | | | - Ali Unlu
- Department of Biochemistry, Selcuk University Faculty of Medicine, Konya, Turkey
| |
Collapse
|
6
|
Apaydın H, Koca Bicer C, Feyza Yurt E, Abdulkadir Serdar M, Dogan İ, Erten S. Elevated Kynurenine Levels in Patients with Primary Sjögren's Syndrome. Lab Med 2023; 54:166-172. [PMID: 36053233 DOI: 10.1093/labmed/lmac084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE We aimed to investigate the plasma levels of tryptophan (Trp) and its metabolites in patients with primary Sjögren's syndrome (pSS). METHODS The study included 34 pSS patients and 42 healthy individuals, and serum Trp and kynurenine (Kyn) concentrations were measured by liquid chromatography with tandem mass spectrometry. Trp degradation was predicted using the ratio of Kyn and Trp concentrations (Kyn/Trp). RESULTS In our study, the mean serum Trp concentration was found to be considerably lower in the pSS group than in the control group (P = .001). The levels of Kyn (P = .019) and the Kyn/Trp ratio (P < .001) were significantly higher in the pSS group than in the control group. The Kyn/Trp ratio was negatively correlated with C-reactive protein (r = -0.369, P = .032). CONCLUSION We found that Kyn pathway metabolism was altered in patients with pSS. This suggests that Trp metabolism may be closely linked to the disease pathogenesis of pSS.
Collapse
Affiliation(s)
- Hakan Apaydın
- Department of Rheumatology, Ankara City Hospital, Ankara, Turkey
| | - Cemile Koca Bicer
- Department of Biochemistry, Ankara City Hospital, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Emine Feyza Yurt
- Department of Biochemistry, Ankara City Hospital, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | | | - İsmail Dogan
- Department of Rheumatology, Ankara City Hospital, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Sukran Erten
- Department of Rheumatology, Ankara City Hospital, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| |
Collapse
|
7
|
Patel VD, Shamsi SA, Miller A, Liu A. Quantitation of tryptophan and kynurenine in human plasma using 4-vinylphenylboronic acid column by capillary electrochromatography coupled with mass spectrometry. Electrophoresis 2023; 44:529-539. [PMID: 36718859 PMCID: PMC10129288 DOI: 10.1002/elps.202200251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 02/01/2023]
Abstract
Tryptophan (TRP) is an essential amino acid catabolized mainly through the kynurenine pathway, and part of it is catabolized in the brain. The abnormal depletion of TRP and production of kynurenine (KYN) by two enzymes, tryptophan 2,3-dioxygenase (TDO) and indoleamine 2,3-dioxygenase (IDO), have been linked to various neurological diseases. The ratio of TRP/KYN in plasma is a valuable measure for IDO/TDO activity and the prognosis of disease conditions. The 4-vinylphenylboronic acid (4-VPBA) was evaluated as a novel stationary phase for OT-CEC-MS/MS. TRP, KYN, and 3-hydroxykynurenine were separated using optimum conditions of 15 mM (NH4 )2 CO3 at pH 8 as a background electrolyte and 25 kV separation voltage on a 90 cm column. The usefulness of the 4-VPBA column for simple, fast, repeatable, and sensitive CEC-ESI-MS/MS application was demonstrated for the quantitation of TRP and KYN in the plasma of healthy human subjects and neuroinflammation subjects. The plasma sample was extracted on a zirconia-based ion-exchange cartridge for simultaneous protein precipitation and phospholipid removal. The method of standard addition, in combination with the internal standards approach, was used to prepare the calibration curve to overcome matrix matching and eliminate procedural errors. The developed quantitation method was validated according to FDA guidelines for sensitivity, accuracy, precision, and extraction recovery. The measured plasma level of TRP and KYN in healthy humans is aligned with the human metabolome database for the same two metabolites.
Collapse
Affiliation(s)
- Vijay D. Patel
- Department of Chemistry, Georgia State University, Atlanta, Georgia, USA
| | - Shahab A. Shamsi
- Department of Chemistry, Georgia State University, Atlanta, Georgia, USA
| | - Andrew Miller
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, Georgia, USA
| | - Aimin Liu
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas, USA
| |
Collapse
|
8
|
Grobben Y, den Ouden JE, Aguado C, van Altena AM, Kraneveld AD, Zaman GJR. Amino Acid-Metabolizing Enzymes in Advanced High-Grade Serous Ovarian Cancer Patients: Value of Ascites as Biomarker Source and Role for IL4I1 and IDO1. Cancers (Basel) 2023; 15:cancers15030893. [PMID: 36765849 PMCID: PMC9913486 DOI: 10.3390/cancers15030893] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/19/2023] [Accepted: 01/28/2023] [Indexed: 02/04/2023] Open
Abstract
The molecular mechanisms contributing to immune suppression in ovarian cancer are not well understood, hampering the successful application of immunotherapy. Amino acid-metabolizing enzymes are known to contribute to the immune-hostile environment of various tumors through depletion of amino acids and production of immunosuppressive metabolites. We aimed to collectively evaluate the activity of these enzymes in high-grade serous ovarian cancer patients by performing targeted metabolomics on plasma and ascites samples. Whereas no indication was found for enhanced l-arginine or l-glutamine metabolism by immunosuppressive enzymes in ovarian cancer patients, metabolism of l-tryptophan by indoleamine 2,3-dioxygenase 1 (IDO1) was significantly elevated compared to healthy controls. Moreover, high levels of l-phenylalanine- and l-tyrosine-derived metabolites associated with interleukin 4 induced 1 (IL4I1) activity were found in ovarian cancer ascites samples. While l-tryptophan is a major substrate of both IDO1 and IL4I1, only its enhanced conversion into l-kynurenine by IDO1 could be detected, despite the observed activity of IL4I1 on its other substrates. In ascites of ovarian cancer patients, metabolite levels were higher compared to those in plasma, demonstrating the value of utilizing this fluid for biomarker identification. Finally, elevated metabolism of l-phenylalanine and l-tyrosine by IL4I1 correlated with disease stage, pointing towards a potential role for IL4I1 in ovarian cancer progression.
Collapse
Affiliation(s)
| | - Judith E. den Ouden
- Radboud Institute for Health Sciences, Radboud University Medical Center, Obstetrics and Gynecology, 6525 GA Nijmegen, The Netherlands
| | - Cristina Aguado
- Laboratory of Oncology, Pangaea Oncology, Dexeus University Hospital, 08028 Barcelona, Spain
| | - Anne M. van Altena
- Radboud Institute for Health Sciences, Radboud University Medical Center, Obstetrics and Gynecology, 6525 GA Nijmegen, The Netherlands
| | - Aletta D. Kraneveld
- Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Guido J. R. Zaman
- Oncolines B.V., 5349 AB Oss, The Netherlands
- Correspondence: ; Tel.: +31-412-700501
| |
Collapse
|
9
|
MacNeill R, Thomas S, Anand P, Koleto M, Powers B, Ledvina A. The Origin-Adjusted Approach for Reliable Quantification of Endogenous Analytes in Mass Spectrometric Bioanalysis. ACS OMEGA 2022; 7:47372-47377. [PMID: 36570202 PMCID: PMC9774370 DOI: 10.1021/acsomega.2c06850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
The reliably accurate and precise quantification of biomarkers is a priceless objective in the drug development and diagnostic arenas. To employ a technique that brings such reliability and furthermore involves a simpler, faster, and inexpensive regime would only underline the potential importance of the concept and technique. To the existing established approaches for biomarker quantification in bioanalytical LC-MS, surrogate matrix (SUR-M) and surrogate analyte (SUR-A), in this Letter we present an approach that fulfills the aforementioned advantages. The concept builds on the historic method of standard addition (SA), in which one source of biological matrix is spiked with analyte to form a calibration curve. With the SA curve back-calculated, the heart of this procedure is the subsequent adjustment of the intercept to zero, the origin, and using only the slope of the curve for interpolation giving calculated sample concentrations. In SA, the concentration axis intercept indicates the endogenous analyte concentration, and our zeroing of this is equivalent to removing the endogenous level. This key shift of the calculated line to the origin unveils our novel origin-adjusted (OA) approach. It enables use akin to a regular xenobiotic method, with no need to ultimately account for the endogenous analyte level in the control matrix used for calibrants. We present a comparison of OA against the control approach of SUR-M in a representative application for kynurenine and tryptophan in human plasma by LC-MS. A numerical performance analysis performed is demonstrative of equivalence between the two approaches for both analytes.
Collapse
|
10
|
A feasible and efficient voltammetric sensor based on electropolymerized L-arginine for the detection of L-tryptophan in dietary supplements. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
11
|
Nadour Z, Simian C, Laprévote O, Loriot MA, Larabi IA, Pallet N. Validation of a liquid chromatography coupled to tandem mass spectrometry method for simultaneous quantification of tryptophan and 10 key metabolites of the kynurenine pathway in plasma and urine: Application to a cohort of acute kidney injury patients. Clin Chim Acta 2022; 534:115-127. [PMID: 35870540 DOI: 10.1016/j.cca.2022.07.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/30/2022] [Accepted: 07/11/2022] [Indexed: 11/29/2022]
Abstract
A sensitive and rapid liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed and validated for the simultaneous determination of tryptophan (Trp) and ten metabolites of kynurenine pathway, including kynurenine (Kyn), 3-hydroxy-kynurenine (3-HK), kynurenic acid (KA), xanthurenic acid (XA), 3-Hydroxy-anthranilic acid (3-HANA), quinolinic acid (QA), nicotinic acid mononucleotide (NaMN), picolinic acid (Pic), nicotinamide (NAM) and nicotinic acid (NA) in both plasma and urine. This LC-MS/MS method was used to predict the occurrence of acute kidney injury (AKI) in a cohort of patients with cardiac surgery under cardiopulmonary bypass (CPB). Urinary concentrations of Pic, as well as Pic to Trp and Pic to 3-HANA ratios were highly predictive of an AKI episode the week after CPB, indicating that Pic could be a predictive biomarker of AKI. Thus, monitoring the kynurenine pathway activity with this LC-MS/MS method is a clinically relevant tool to identify new biomarkers of kidney injury.
Collapse
Affiliation(s)
- Zahia Nadour
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France; Paris University, INSERM UMRS1138, Centre de Recherche des Cordeliers, 15 rue de l'Ecole de médecine, 75006 Paris, France.
| | - Christophe Simian
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France
| | - Olivier Laprévote
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France
| | - Marie-Anne Loriot
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France; Paris University, INSERM UMRS1138, Centre de Recherche des Cordeliers, 15 rue de l'Ecole de médecine, 75006 Paris, France
| | - Islam Amine Larabi
- Department of Pharmacology and Toxicology, Paris-Saclay University (Versailles Saint-Quentin-En-Yvelines University), Inserm U-1173, Raymond Poincaré Hospital, AP-HP, 104 Boulevard Raymond Poincaré, 92380 Garches, France
| | - Nicolas Pallet
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France; Paris University, INSERM UMRS1138, Centre de Recherche des Cordeliers, 15 rue de l'Ecole de médecine, 75006 Paris, France
| |
Collapse
|
12
|
Discenza LN, Balog A, Huang C, Moore R, Ranasinghe A, Lin TA, D'Arienzo C, Olah TV. Quantification of Linrodostat and its metabolites: Overcoming bioanalytical challenges in support of a discovery Indoleamine 2,3 dioxygenase program. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1207:123305. [PMID: 35839627 DOI: 10.1016/j.jchromb.2022.123305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 11/29/2022]
Abstract
BMS-986205 (Linrodostat) is a small molecule inhibitor of Indoleamine 2, 3 dioxygenase (IDO) that is currently being evaluated in clinical trials for the oral treatment of advanced cancer. Initially, there were concerns regarding possible toxicity following administration, since BMS-986205 undergoes metabolism to form 4-chloroaniline. However, it was later determined that the downstream metabolites of 4-chloroaniline might be a greater concern. To evaluate the potential toxicity of these metabolites, a sensitive LC-MS/MS analytical method was needed to quantify both the parent compound and multiple metabolites. This presented a challenge since the method required the analysis of multiple analytes while still retaining the analytical sensitivity required to support studies. By utilizing a multi-function analytical method, we were able to quantify the necessary analytes using a complex LC-MS/MS-based method including the application of both negative and positive electrospray ionization.
Collapse
Affiliation(s)
- Lorell N Discenza
- Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, Route 206 & Provinceline Road, Princeton, NJ 08543, USA.
| | - Aaron Balog
- Discovery Oncology, Bristol Myers Squibb Company, Route 206 & Provinceline Road, Princeton, NJ 08543, USA
| | - Christine Huang
- Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, Route 206 & Provinceline Road, Princeton, NJ 08543, USA
| | - Robin Moore
- Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, Route 206 & Provinceline Road, Princeton, NJ 08543, USA
| | - Asoka Ranasinghe
- Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, Route 206 & Provinceline Road, Princeton, NJ 08543, USA
| | - Tai-An Lin
- Discovery Oncology, Bristol Myers Squibb Company, Route 206 & Provinceline Road, Princeton, NJ 08543, USA
| | - Celia D'Arienzo
- Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, Route 206 & Provinceline Road, Princeton, NJ 08543, USA
| | - Timothy V Olah
- Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, Route 206 & Provinceline Road, Princeton, NJ 08543, USA
| |
Collapse
|
13
|
IDO activity forecasts obesity in males and premenopausal females in a 10-year follow-up study:The Cardiovascular Risk in Young Finns Study. Atherosclerosis 2021; 336:32-38. [PMID: 34628102 DOI: 10.1016/j.atherosclerosis.2021.09.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 09/12/2021] [Accepted: 09/16/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND AIMS Indoleamine 2,3-dioxygenase (IDO) is an intracellular enzyme associated with artery wall inflammation. Previous studies have verified correlation between IDO activity and early signs of atherosclerosis especially in females. We aimed to elucidate the relationship between an estimate of IDO activity and atherosclerotic risk factors related to non-alchohol-fatty liver (NAFLD) in a 6- and 10-year follow-up. METHODS Estimates of IDO activity along with complete risk factor data were measured from females (n = 506; age 24-39) and males (n = 421; age 24-39) in 2001. Risk factor measurements were conducted again in 2007 and 2011. Statistical examinations were carried out by Pearson correlation and risk ratio analysis. RESULTS In females, age-adjusted IDO correlated with body mass index (BMI) (p = 0.0008), waist (p = 0.0009), C-reactive protein (CRP) (p = 0.0014) and logarithmically modified triglycerides (p = 0.0488) in 2007. Correlation remained significant with BMI (p = 0.0007) and waist (p = 0.0063) in 2011. In males, age-adjusted IDO correlated with waist (p = 0.0367) and high-density lipoprotein cholesterol (HDL-C) (p = 0.0489) in 2007. Correlation remained significant with HDL-C (p = 0.0348) in 2011. In risk ratio analysis, relationship between IDO and obesity was confirmed in females after 10 years (RR = 1.026, p = 0.0147, 95% CI) and in males after 6 and 10 years (RR = 1.019, p = 0.0091, 95% CI and RR = 1.015, p = 0.0404, 95% CI, respectively) when the data was adjusted for age and BMI. CONCLUSIONS IDO activity correlated with obesity and factors related to NAFLD, namely obesity of visceral type, hypertriglyceridemia and CRP (in females), well-characterized risk factors for diabetes and atherosclerosis in 6- and 10-year follow-up in males and premenopausal females.
Collapse
|
14
|
Activation and gut-homing of peripheral T cells in HIV immunologic non-responders despite long term viral suppression. PLoS One 2021; 16:e0254149. [PMID: 34320023 PMCID: PMC8318285 DOI: 10.1371/journal.pone.0254149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/18/2021] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE Serious non-AIDS disease events (SNAE) are experienced disproportionately by immunologic non-responders (INRs), HIV-infected individuals who do not restore CD4 T cells in blood despite effective viral suppression. We aimed to characterize the inflammatory biomarker profile of the INR phenotype. METHODS Blinded cross-sectional cohort study comparing markers of immune activation and gut homing between INR and non-INR individuals. HIV-positive participants had HIV RNA suppression on antiretroviral therapy and were categorized as either INR (N = 36) or Clinical Responders ("CR"; CD4>350/mm3; N = 47). 18 HIV-negative comparator individuals were included. Cellular markers were assessed by flow cytometry, with soluble markers assessed by ELISA and LC/MS-MS. Multivariable linear regression models estimated the association between INR phenotype and markers, adjusting for age, sex, duration of ART, and recent infection/vaccination. RESULTS INR participants demonstrated a reduced CD4/CD8 ratio (p<0.001), 35% more CD8 activation (p = 0.02), 36% greater α4β7+ CD4 T cells (p<0.01), 54% more HLA-DR+ CD4 T cells (p<0.001), and 20% higher plasma VCAM (p<0.01) compared to CRs. The INR phenotype was not associated with levels of Kyn/Trp, CRP, TNF, IFNγ, IL-8, IL-6, sCD14, D-Dimer, I-FABP, MCP-1, ICAM or CD8%HLA-DR+. CONCLUSIONS Peripheral CD4 non-recovery during long-term treated HIV infection is characterized by elevated CD8 activation and CD4 gut homing. Gut-focused interventions may be warranted in the INR context, and CD8 activation may serve as a surrogate endpoint for clinical interventions.
Collapse
|
15
|
Pierre F, Forman LS, Winter M, Cheng D, Ngabirano C, Emenyonu N, Hunt PW, Huang Y, Muyindike W, Samet J, Hahn JA, So-Armah K. Alcohol Consumption and Tryptophan Metabolism Among People with HIV Prior to Antiretroviral Therapy Initiation: The Uganda ARCH Cohort Study. Alcohol Alcohol 2021; 57:219-225. [PMID: 34027552 PMCID: PMC8919408 DOI: 10.1093/alcalc/agab033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 04/02/2021] [Accepted: 04/06/2021] [Indexed: 11/14/2022] Open
Abstract
AIMS Alcohol is hypothesized to have effects on the kynurenine pathway of tryptophan catabolism, a potential mechanism for alcohol-induced depression and aggression. A biomarker of this pathway, the plasma kynurenine to tryptophan ratio (K/T ratio), has been associated with HIV progression, mortality and depression. Our aim was to assess whether hazardous alcohol consumption is associated higher K/T ratio among people with HIV. METHODS Participants were a subset of the Uganda Alcohol Research Collaboration on HIV/AIDS Cohort. Alcohol consumption was categorized (abstinent, moderate and hazardous alcohol use) using the Alcohol Use Disorders Identification Test-Consumption and phosphatidylethanol (PEth). K/T ratio was the primary outcome. We used linear regression adjusted for age, sex, FIB-4, hepatitis B surface antigen, log (HIV viral load) to estimate the association between alcohol consumption and K/T ratio. RESULTS Compared to abstinent participants, hazardous drinkers and moderate drinkers had higher K/T ratio but these differences did not reach statistical significance. CONCLUSIONS Our results suggest that hazardous alcohol consumption, in the context of untreated HIV infection, may not significantly alter kynurenine to tryptophan ratio as a measure of activity of the kynurenine pathway of tryptophan metabolism.
Collapse
Affiliation(s)
- Frantz Pierre
- Department of Epidemiology and Biostatistics, Boston University School of Public Health, 72 E Concord St, Boston, MA 02118, USA
| | - Leah S Forman
- Biostatistics and Epidemiology Data Analytics Center, Boston University School of Public Health, 85 East Newton Street, M921, Boston, MA 02118, USA
| | - Michael Winter
- Biostatistics and Epidemiology Data Analytics Center, Boston University School of Public Health, 85 East Newton Street, M921, Boston, MA 02118, USA
| | - Debbie Cheng
- Department of Biostatistics, Boston University School of Public Health, 801 Massachusetts Ave Boston, MA 02119, USA
| | - Christine Ngabirano
- Mbarara University of Science and Technology Department of Internal Medicine P.O Box 1410 Mbarara Uganda, Uganda
| | - Nneka Emenyonu
- Department of Medicine, University of California San Francisco, 1001 Potrero Ave, San Francisco, CA 94110, USA
| | - Peter W Hunt
- Division of HIV/AIDS, San Francisco General Hospital, San Francisco, CA, USA
| | - Yong Huang
- Department of Bioengineering and Therapeutics, University of California San Francisco, 1700 4th Street, San Francisco, CA 94158, USA
| | - Winnie Muyindike
- Mbarara University of Science and Technology Department of Internal Medicine P.O Box 1410 Mbarara, Uganda
| | - Jeffrey Samet
- Department of Medicine, Boston University School of Medicine and Boston Medical Center, 801 Massachusetts Ave Crosstown, 2nd Floor Boston, MA 02118, USA
| | - Judith A Hahn
- Departments of Medicine and Epidemiology & Biostatistics, University of California San Francisco, 550 16th St., 3rd floor San Francisco, CA 94158-2549, USA
| | - Kaku So-Armah
- Corresponding author: Department of Medicine, Boston University School of Medicine, 801 Massachusetts Ave, 2nd Floor Boston, MA 02118, USA. Tel.: 617 414 6624; E-mail:
| |
Collapse
|
16
|
Canine mast cell tumour cells regulate tryptophan catabolism via the expression of indoleamine 2,3-dioxygenase. Res Vet Sci 2021; 137:159-162. [PMID: 33984619 DOI: 10.1016/j.rvsc.2021.04.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 03/28/2021] [Accepted: 04/27/2021] [Indexed: 01/14/2023]
Abstract
Indoleamine 2,3-deoxygenase (IDO) produced by cancer cells catabolizes tryptophan (TRP) to kynurenine (KYN) in the environment, resulting induction of cancer immune escape through induction of T cell anergy and enhancement of regulatory T cells. Recently, inhibition of IDO has been recognized as one of therapeutic strategies for human neoplastic diseases. However, there have been few reports about IDO-expressing cancers in dogs. In this study, we attempted to examine whether canine mast cell tumour (MCT) cells express IDO and modulate the concentration of TRP and KYN in the environment. BR, MPT-1.2, and MPT-3 cells were used as canine MCT cells. Expression of IDO was examined with RT-PCR and western blotting. Concentrations of TRP and KYN in the culture medium after incubation with canine MCT cells were detected with liquid chromatography-tandem mass spectrometry. The expression of mRNA and protein of IDO were confirmed in all samples extracted from canine MCT cells. TRP concentration in the culture medium was decreased and that of KYN was increased on incubation with canine MCT cells. The ratio of KYN/TRP, widely considered to represent IDO activity, was also significantly elevated. Moreover, treatment with an IDO inhibitor L-1-methyl-tryptophan (L-1MT) clearly diminished the elevation of KYN/TRP ratio induced by the incubation with canine MCT cells. Our results indicate that canine MCT cells could directly regulate the concentrations of TRP and KYN through expressing IDO, suggesting that canine MCT have an immune escape ability. Therefore, inhibition of IDO might be a novel strategy for the treatment of dogs with MCT.
Collapse
|
17
|
Ahmed E, Xiao D, Kabir KMM, Fletcher J, Donald WA. Ambient Pressure Ion Funnel: Concepts, Simulations, and Analytical Performance. Anal Chem 2020; 92:15811-15817. [DOI: 10.1021/acs.analchem.0c02938] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ezaz Ahmed
- School of Chemistry, University of New South Wales, Sydney, NSW 2052 Australia
| | - Dan Xiao
- School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW 2052 Australia
| | - K. M. Mohibul Kabir
- School of Chemistry, University of New South Wales, Sydney, NSW 2052 Australia
| | - John Fletcher
- School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW 2052 Australia
| | - William A. Donald
- School of Chemistry, University of New South Wales, Sydney, NSW 2052 Australia
| |
Collapse
|
18
|
Dolšak A, Gobec S, Sova M. Indoleamine and tryptophan 2,3-dioxygenases as important future therapeutic targets. Pharmacol Ther 2020; 221:107746. [PMID: 33212094 DOI: 10.1016/j.pharmthera.2020.107746] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/06/2020] [Accepted: 11/10/2020] [Indexed: 02/07/2023]
Abstract
Conversion of tryptophan to N-formylkynurenine is the first and rate-limiting step of the tryptophan metabolic pathway (i.e., the kynurenine pathway). This conversion is catalyzed by three enzyme isoforms: indoleamine 2,3-dioxygenase 1 (IDO1), indoleamine 2,3-dioxygenase 2 (IDO2), and tryptophan 2,3-dioxygenase (TDO). As this pathway generates numerous metabolites that are involved in various pathological conditions, IDOs and TDO represent important targets for therapeutic intervention. This pathway has especially drawn attention due to its importance in tumor resistance. Over the last decade, a large number of IDO and TDO inhibitors have been developed, many of which have entered clinical trials. Here, detailed structural comparisons of these three enzymes (with emphasis on their active sites), their involvement in cellular signaling, and their role(s) in pathological conditions are discussed. Furthermore, the most important recent inhibitors described in papers and patents and involved in clinical trials are reviewed, with a focus on both selective and multiple inhibitors. A short overview of the biochemical and cellular assays used for inhibitory potency evaluation is also presented. This review summarizes recent advances on IDO and TDO as potential drug targets, and provides the key features and perspectives for further research and development of potent inhibitors of the kynurenine pathway.
Collapse
Affiliation(s)
- Ana Dolšak
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, SI-1000 Ljubljana, Slovenia
| | - Stanislav Gobec
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, SI-1000 Ljubljana, Slovenia
| | - Matej Sova
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva 7, SI-1000 Ljubljana, Slovenia.
| |
Collapse
|
19
|
Solvent front position extraction with semi-automatic device as a powerful sample preparation procedure to quantitatitation of tryptophan in human plasma. Sci Rep 2020; 10:15063. [PMID: 32934323 PMCID: PMC7493889 DOI: 10.1038/s41598-020-71846-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/30/2020] [Indexed: 11/30/2022] Open
Abstract
In the paper the results of the tryptophan determination in human plasma samples prepared with the novel Solvent Front Position Extraction (SFPE) technique are presented. The SFPE procedure is used for preparation of real biological sample for the first time. The results obtained using SFPE are compared with those using the classical sample preparation procedure. Under the optimal conditions, tryptophan and its internal standard were separated from other plasma compounds (matrix) as a small common zone/spot on a chromatographic plate using semiautomatic device equipped with moving pipet, which distributed developing solvent on the adsorbent layer. Tryptophan and the internal standard were evenly distributed within the small common zone from that the both substances were extracted and the solution obtained was transferred to quantitation with LC–MS and MS techniques. The determination results are satisfactory, the percentage values of relative error and RSD relative standard deviation do not exceed 5%. The procedure is characterized by simplicity, high analysis throughput, very good sample purification and seems to be easy applicable to other biological samples with these advantages mentioned.
Collapse
|
20
|
Development and Validation of a Hydrophilic Interaction Liquid Chromatography Tandem Mass Spectrometry Method for the Determination of Asparagine in Human Serum. Int J Anal Chem 2020; 2020:6980392. [PMID: 32180807 PMCID: PMC7064832 DOI: 10.1155/2020/6980392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 11/13/2019] [Accepted: 11/27/2019] [Indexed: 12/03/2022] Open
Abstract
L-Asparagine (ASN) is the catalyze substrate of L-asparaginase (ASNase), which is an important drug for acute lymphoblastic leukemia (ALL) patients. The ASN level is found to be closely associated with the effectiveness of ASNase treatment. In this study, a hydrophilic interaction liquid chromatography tandem mass spectrometry (HILIC-MS/MS) method was developed for the determination of ASN in the human serum using a stable isotope-labeled internal standard (ASN-D3). Serum samples were prepared by a one-step precipitation procedure using methanol and separated by an Agilent HILIC Plus column with the mobile phase of methanol-water (95 : 5, v/v, containing 5 mM ammonium formate and 0.1% formic acid), at a constant flow rate of 0.3 mL/min. Mass spectrometric analysis was conducted using multiple-reaction monitoring in the positive electrospray ionization mode. Serum ASN concentrations were determined over a linear calibration curve range of 2–200 μM, with acceptable accuracies and precisions. The validated HILIC-MS/MS method was successfully applied to the quantification of ASN levels in the serum from patients with ALL. Collectively, the research may shed new light on an alternative rapid, simple, and convenient quantitative method for determination of serum ASN in ALL patients treated with ASNase.
Collapse
|
21
|
Eser B, Özkan Y, Sepici Dinçel A. Determination of Tryptophan and Kynurenine by LC-MS/MS by Using Amlodipine as an Internal Standard. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:379-385. [PMID: 32031396 DOI: 10.1021/jasms.9b00007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Tryptophan is an essential amino acid that plays an important role in cell metabolism, and kynurenine is its main metabolic pathway. By using ultra-high-performance liquid chromatography coupled to electrospray ionization triple-quadrupole mass spectrometry, tryptophan and kynurenine were determined using amlodipine as an internal standard. The analysis was carried out on an ACE-C18 (4.6 mm × 50 mm, 5 μm) reversed-phase analytical column using the gradient elution mode. For quantitative determination, amlodipine was used as an internal standard. Detection was performed using multiple reaction monitoring in electrospray ionization mode at m/z 205.1 → 117.7 and 187.9 for tryptophan, m/z 209.1 → 146 and 93.9 for kynurenine, and m/z 409.2 → 294.1 for the internal standard. Good linearity of the analyte to internal standard peak area ratios was seen in the concentration range 1.25-4000 ng/mL for tryptophan and 0.5-1600 ng/mL for kynurenine. The method showed excellent linearity with regression coefficients of 0.99 for kynurenine and 0.996 for tryptophan. The limits of quantification were 0.55 ng/mL for tryptophan and 0.47 ng/mL for kynurenine. The % RSD for all analytes ranged from 0.3 to 3.4% for intraday and 0.4 to 8.9% for interday experiments. A simple LC-MS/MS method has been developed and validated for measuring Kyn and Trp by using an affordable and more easily available internal standard, which is amlodipine.
Collapse
Affiliation(s)
- Burcu Eser
- Research and Development Center , University of Health Sciences , Ankara 06011 , Turkey
- Department of Medical Biochemistry, Faculty of Medicine , Gazi University , Ankara 06011 , Turkey
| | - Yeşim Özkan
- Department of Biochemistry, Faculty of Pharmacy , Gazi University , Ankara 06011 , Turkey
| | - Aylin Sepici Dinçel
- Department of Medical Biochemistry, Faculty of Medicine , Gazi University , Ankara 06011 , Turkey
| |
Collapse
|
22
|
Tryptophan Metabolism Activates Aryl Hydrocarbon Receptor-Mediated Pathway To Promote HIV-1 Infection and Reactivation. mBio 2019; 10:mBio.02591-19. [PMID: 31848275 PMCID: PMC6918076 DOI: 10.1128/mbio.02591-19] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Multiple cellular metabolic pathways are altered by HIV-1 infection, with an impact on immune activation, inflammation, and acquisition of non-AIDS comorbid diseases. The dysfunction of tryptophan (Trp) metabolism has been observed clinically in association with accelerated HIV-1 pathogenesis, but the underlying mechanism remains unknown. In this study, we demonstrated that the aryl hydrocarbon receptor (AHR), a ligand-activated transcription factor, is activated by Trp metabolites to promote HIV-1 infection and reactivation. AHR directly binds to the HIV-1 5' long terminal repeat (5'-LTR) at the molecular level to activate viral transcription and infection, and AHR activation by Trp metabolites increases its nuclear translocation and association with the HIV 5'-LTR; moreover, the binding of AHR with HIV-1 Tat facilitates the recruitment of positive transcription factors to viral promoters. These findings not only elucidate a previously unappreciated mechanism through which cellular Trp metabolites affect HIV pathogenesis but also suggest that a downstream target AHR may be a potential target for modulating HIV-1 infection.IMPORTANCE Cellular metabolic pathways that are altered by HIV-1 infection may accelerate disease progression. Dysfunction in tryptophan (Trp) metabolism has been observed clinically in association with accelerated HIV-1 pathogenesis, but the mechanism responsible was not known. This study demonstrates that Trp metabolites augment the activation of aryl hydrocarbon receptor (AHR), a ligand-activated transcription factor, to promote HIV-1 infection and transcription. These findings not only elucidate a previously unappreciated mechanism through which cellular Trp metabolites affect HIV pathogenesis but also suggest that a downstream target AHR may be a potential target for modulating HIV-1 infection.
Collapse
|
23
|
Virág D, Király M, Drahos L, Édes AE, Gecse K, Bagdy G, Juhász G, Antal I, Klebovich I, Dalmadi Kiss B, Ludányi K. Development, validation and application of LC-MS/MS method for quantification of amino acids, kynurenine and serotonin in human plasma. J Pharm Biomed Anal 2019; 180:113018. [PMID: 31851908 DOI: 10.1016/j.jpba.2019.113018] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 11/06/2019] [Accepted: 11/27/2019] [Indexed: 01/09/2023]
Abstract
Altered serotonergic neurotransmission is a key factor in several neurologic and psychiatric disorders such as migraine. Human and animal studies suggest that chronically low interictal serotonin levels of plasma and brain may facilitate increased activity of the trigeminovascular pathway, and may contribute to development of repeated migraine attacks. However, brain serotonin synthesis is affected by the concentration of tryptophan, its metabolites and a number of amino acids. In this work a simple and robust LC-MS/MS method for the quantitative determination of valine, leucine, isoleucine, phenylalanine, tyrosine, tryptophan, serotonin and kynurenine in human plasma has been developed and validated. Sample preparation was achieved by protein precipitation, using trifluoroacetic acid. Chromatographic separation was carried out on a Supelco Ascentis® Express C18 column (3.0 mm i.d. × 150 mm, 2.7 μm) equipped with an Agilent Zorbax Eclipse XDB C8 guard-column under isocratic conditions at a flow rate of 0.4 mL/min, over a 6.5 min run time. Mobile phase was 0.2% trifluoroacetic acid - acetonitrile (85:15, v/v). The eight analytes and two internal standards were ionized by positive electrospray ionization and detected in multiple reaction monitoring mode. A "fit-for-purpose" validation approach was adopted using surrogate matrix for the preparation of calibration samples. The calibration curves of all analytes showed excellent linearities with a correlation coefficient (r2) of 0.998 or better. Spiked surrogate matrix samples and pooled human plasma were used as quality control samples. Intra-day and inter-day precisions were less than 11.8% and 14.3%, and accuracies were within the ranges of 87.4-114.3% and 87.7-113.3%, respectively. Stability of the components in standard solutions, surrogate matrix, pooled plasma and processed samples were found to be acceptable under all relevant conditions. No significant carryover effect was observed. The surrogate matrix behaved parallel to human plasma when assessed by standard addition method and diluting the authentic matrix with surrogate matrix. The method was successfully applied for analysis of 800 human plasma samples to support a clinical study.
Collapse
Affiliation(s)
- Dávid Virág
- Department of Pharmaceutics, Semmelweis University, Hőgyes Endre utca 7, Budapest H-1092, Hungary
| | - Márton Király
- Department of Pharmaceutics, Semmelweis University, Hőgyes Endre utca 7, Budapest H-1092, Hungary
| | - László Drahos
- MS Proteomics Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences of the Hungarian Academy of Sciences, Magyar tudósok körútja 2, Budapest H-1117, Hungary
| | - Andrea Edit Édes
- SE-NAP 2 Genetic Brain Imaging Migraine Research Group, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary; Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary
| | - Kinga Gecse
- SE-NAP 2 Genetic Brain Imaging Migraine Research Group, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary; Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary
| | - György Bagdy
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary; MTA-SE Neuropsychopharmacology and Neurochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary
| | - Gabriella Juhász
- SE-NAP 2 Genetic Brain Imaging Migraine Research Group, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary; Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary
| | - István Antal
- Department of Pharmaceutics, Semmelweis University, Hőgyes Endre utca 7, Budapest H-1092, Hungary
| | - Imre Klebovich
- Department of Pharmaceutics, Semmelweis University, Hőgyes Endre utca 7, Budapest H-1092, Hungary
| | - Borbála Dalmadi Kiss
- Department of Pharmaceutics, Semmelweis University, Hőgyes Endre utca 7, Budapest H-1092, Hungary
| | - Krisztina Ludányi
- Department of Pharmaceutics, Semmelweis University, Hőgyes Endre utca 7, Budapest H-1092, Hungary.
| |
Collapse
|
24
|
Anesi A, Rubert J, Oluwagbemigun K, Orozco-Ruiz X, Nöthlings U, Breteler MMB, Mattivi F. Metabolic Profiling of Human Plasma and Urine, Targeting Tryptophan, Tyrosine and Branched Chain Amino Acid Pathways. Metabolites 2019; 9:metabo9110261. [PMID: 31683910 PMCID: PMC6918267 DOI: 10.3390/metabo9110261] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/21/2019] [Accepted: 10/28/2019] [Indexed: 02/06/2023] Open
Abstract
Tryptophan and tyrosine metabolism has a major effect on human health, and disorders have been associated with the development of several pathologies. Recently, gut microbial metabolism was found to be important for maintaining correct physiology. Here, we describe the development and validation of a UHPLC-ESI-MS/MS method for targeted quantification of 39 metabolites related to tryptophan and tyrosine metabolism, branched chain amino acids and gut-derived metabolites in human plasma and urine. Extraction from plasma was optimised using 96-well plates, shown to be effective in removing phospholipids. Urine was filtered and diluted ten-fold. Metabolites were separated with reverse phase chromatography and detected using triple quadrupole MS. Linear ranges (from ppb to ppm) and correlation coefficients (r2 > 0.990) were established for both matrices independently and the method was shown to be linear for all tested metabolites. At medium spiked concentration, recovery was over 80% in both matrices, while analytical precision was excellent (CV < 15%). Matrix effects were minimal and retention time stability was excellent. The applicability of the methods was tested on biological samples, and metabolite concentrations were found to be in agreement with available data. The method allows the analysis of up to 96 samples per day and was demonstrated to be stable for up to three weeks from acquisition.
Collapse
Affiliation(s)
- Andrea Anesi
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via E. Mach 1, 38010 San Michele all' Adige, Italy.
| | - Josep Rubert
- CIBIO, Department of Cellular, Computational and Integrative Biology, Via Sommarive 9, 38123 Povo, Italy.
| | - Kolade Oluwagbemigun
- Nutritional Epidemiology, Institute of Nutrition and Food Sciences, University of Bonn, Endenicher Allee 19b, 53115 Bonn, Germany.
| | - Ximena Orozco-Ruiz
- Population Health Sciences, German Center for Neurodegenerative diseases (DZNE), Venusberg-Campus 1-Building 99, 53127 Bonn, Germany.
| | - Ute Nöthlings
- Nutritional Epidemiology, Institute of Nutrition and Food Sciences, University of Bonn, Endenicher Allee 19b, 53115 Bonn, Germany.
| | - Monique M B Breteler
- Population Health Sciences, German Center for Neurodegenerative diseases (DZNE), Venusberg-Campus 1-Building 99, 53127 Bonn, Germany.
- Institute for Medical Biometry, Informatics and Epidemiology (IMBIE), Faculty of Medicine, University of Bonn, Venusberg-Campus 1-Building 11, 53127 Bonn, Germany.
| | - Fulvio Mattivi
- CIBIO, Department of Cellular, Computational and Integrative Biology, Via Sommarive 9, 38123 Povo, Italy.
- University of Trento, Department of Physics, Bioorganic Chemistry Laboratory, Via Sommarive 14, 38123 Povo, Italy.
| |
Collapse
|
25
|
Adu-Gyamfi CG, Savulescu D, George JA, Suchard MS. Indoleamine 2, 3-Dioxygenase-Mediated Tryptophan Catabolism: A Leading Star or Supporting Act in the Tuberculosis and HIV Pas-de-Deux? Front Cell Infect Microbiol 2019; 9:372. [PMID: 31737575 PMCID: PMC6828849 DOI: 10.3389/fcimb.2019.00372] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 10/14/2019] [Indexed: 12/11/2022] Open
Abstract
Progression from latency to active Tuberculosis (TB) disease is mediated by incompletely understood host immune factors. The definitive characteristic of progressive human immunodeficiency virus (HIV) disease is a severe loss in number and function of T lymphocytes. Among the many possible mediators of T lymphocyte loss and ineffective function is the activity of the immune-modulatory enzyme indoleamine 2,3-dioxygenase (IDO). IDO is the rate-limiting enzyme converting tryptophan to kynurenine. IDO activity was initially recognized to mediate tolerance at the foeto-maternal interface. Recently, IDO activity has also been noted to play a critical role in immune tolerance to pathogens. Studies of host immune and metabolic mediators have found IDO activity significantly elevated in HIV and TB disease. In this review, we explore the link between IDO-mediated tryptophan catabolism and the presence of active TB disease in HIV-infected patients. We draw attention to increased IDO activity as a key factor marking the progression from latent to active TB disease in HIV-infected patients.
Collapse
Affiliation(s)
- Clement Gascua Adu-Gyamfi
- Centre for Vaccines and Immunology, National Institute for Communicable Diseases, Johannesburg, South Africa.,Department of Chemical Pathology, Faculty of Health Sciences, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa
| | - Dana Savulescu
- Centre for Vaccines and Immunology, National Institute for Communicable Diseases, Johannesburg, South Africa
| | - Jaya Anna George
- Department of Chemical Pathology, Faculty of Health Sciences, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa
| | - Melinda Shelley Suchard
- Centre for Vaccines and Immunology, National Institute for Communicable Diseases, Johannesburg, South Africa.,Department of Chemical Pathology, Faculty of Health Sciences, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa
| |
Collapse
|
26
|
Brooks EL, Mutengwa VS, Abdalla A, Yeoman MS, Patel BA. Determination of tryptophan metabolism from biological tissues and fluids using high performance liquid chromatography with simultaneous dual electrochemical detection. Analyst 2019; 144:6011-6018. [PMID: 31538156 DOI: 10.1039/c9an01501a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Serotonin and kynurenine are formed following metabolism of the essential amino acid tryptophan. Both molecules play important biological roles and the balance of how tryptophan metabolism varies to either the serotonin or kynurenine pathway may provide key insight into the inflammatory status of the biological region. At present complex chromatographic methods are utilised which predominately focus on either monitoring analytes in the serotonin or kynurenine pathway rather than both. Our study develops a simple yet robust methodology for the monitoring of tryptophan metabolism. We utilised isocratic reverse phase high-performance liquid chromatography with simultaneously dual electrochemical detection. This approach allowed for separation of co-eluted analytes and identification of analytes from both pathways within 14 minutes. For all analytes, limits of detection were <35 nM. No crosstalk was observed when dual simultaneous detection was conducted in a radial flow cell. Responses from the hippocampus, blood and ileum mucosa highlighted that each region had a varying ratio of serotonin to kynurenine pathway, indicating varied approaches to tryptophan metabolism. The developed method can monitor how the metabolism of tryptophan varies between the two pathways which can provide insight into the inflammatory state of reach region with age and disease.
Collapse
Affiliation(s)
- Emily L Brooks
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, UK
| | | | | | | | | |
Collapse
|
27
|
Tombari RJ, Saunders CM, Wu CY, Dunlap LE, Tantillo DJ, Olson DE. Ex Vivo Analysis of Tryptophan Metabolism Using 19F NMR. ACS Chem Biol 2019; 14:1866-1873. [PMID: 31449387 DOI: 10.1021/acschembio.9b00548] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Tryptophan, an essential amino acid, is metabolized into a variety of small molecules capable of impacting human physiology, and aberrant tryptophan metabolism has been linked to a number of diseases. There are three principal routes by which tryptophan is degraded, and thus methods for measuring metabolic flux through these pathways can be used to understand the factors that perturb tryptophan metabolism and potentially to measure disease biomarkers. Here, we describe a method utilizing 6-fluorotryptophan as a probe for detecting tryptophan metabolites in ex vivo tissue samples via 19F nuclear magnetic resonance. As a proof of concept, we demonstrate that 6-fluorotryptophan can be used to measure changes in tryptophan metabolism resulting from antibiotic-induced changes in gut microbiota composition. Taken together, we describe a general strategy for monitoring amino acid metabolism using 19F nuclear magnetic resonance that is operationally simple and does not require chromatographic separation of metabolites.
Collapse
Affiliation(s)
- Robert J. Tombari
- Department of Chemistry, University of California, Davis, Davis, California 95616, United States
| | - Carla M. Saunders
- Department of Chemistry, University of California, Davis, Davis, California 95616, United States
| | - Chun-Yi Wu
- Bioanalysis and Pharmacokinetics Core Facility, University of California, Davis, Sacramento, California 95817, United States
| | - Lee E. Dunlap
- Department of Chemistry, University of California, Davis, Davis, California 95616, United States
| | - Dean J. Tantillo
- Department of Chemistry, University of California, Davis, Davis, California 95616, United States
| | - David E. Olson
- Department of Chemistry, University of California, Davis, Davis, California 95616, United States
- Department of Biochemistry & Molecular Medicine, School of Medicine, University of California, Davis, Sacramento, California 95817, United States
- Center for Neuroscience, University of California, Davis, Davis, California 95616, United States
| |
Collapse
|
28
|
Kardashian A, Ma Y, Yin MT, Scherzer R, Nolan O, Aweeka F, Tien PC, Price JC. High Kynurenine:Tryptophan Ratio Is Associated With Liver Fibrosis in HIV-Monoinfected and HIV/Hepatitis C Virus-Coinfected Women. Open Forum Infect Dis 2019; 6:ofz281. [PMID: 31304190 PMCID: PMC6612851 DOI: 10.1093/ofid/ofz281] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 06/10/2019] [Indexed: 01/01/2023] Open
Abstract
Background Tryptophan catabolism, measured by the kynurenine:tryptophan (kyn/trp) ratio, is associated with gut microbiota alterations in people with HIV (PWH). We examined the association of the kyn/trp ratio with liver fibrosis in women with/without HIV infection. Methods The plasma kyn/trp ratio was measured in 137 HIV-monoinfected, HIV/hepatitis C virus (HCV)–coinfected, and uninfected women in the Women’s Interagency HIV Study. Fibrosis was estimated using FIB-4 in all participants and vibration-controlled transient elastography liver stiffness measurement (LSM) in a subset (n = 83). We used multivariable linear regression to evaluate the associations of infection status and kyn/trp ratio with relative differences in fibrosis estimates. Results The median kyn/trp ratio (interquartile range) was 0.056 (0.045–0.066) in HIV/HCV-coinfected, 0.038 (0.032–0.046) in HIV-monoinfected, and 0.031 (0.025–0.034) in uninfected women (P < .001). After adjustment for sociodemographic, lifestyle, and metabolic factors, HIV monoinfection and HIV/HCV coinfection were associated with 37% (95% confidence interval [CI], 9% to 73%) and 164% (95% CI, 100% to 250%) greater FIB-4, respectively. When kyn/trp ratio was included, higher kyn/trp ratio was associated with greater FIB-4 (27% per kyn/trp doubling; 95% CI, 5% to 53%), and the associations of HIV monoinfection (29% per kyn/trp doubling; 95% CI, 2% to 63%) and HIV/HCV coinfection (123% per kyn/trp doubling; 95% CI, 63% to 203%) with greater FIB-4 were attenuated. Among those with LSM, higher kyn/trp ratio was associated with greater LSM (43% per kyn/trp doubling; 95% CI, 15% to 79%) in multivariable analysis. Conclusions The kyn/trp ratio is elevated in PWH and is associated with greater liver fibrosis. Tryptophan catabolism may modify the relationships between HIV, HCV, and fibrosis.
Collapse
Affiliation(s)
- Ani Kardashian
- Department of Medicine, University of California Los Angeles, Los Angeles, California
| | - Yifei Ma
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Michael T Yin
- Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, New York
| | - Rebecca Scherzer
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Olivia Nolan
- School of Medicine, College of Physicians and Surgeons, Columbia University, New York, New York
| | - Francesca Aweeka
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Phyllis C Tien
- Department of Medicine, University of California San Francisco, San Francisco, California.,Medical Service, Department of Veteran Affairs Medical Center, San Francisco, California, USA
| | - Jennifer C Price
- Department of Medicine, University of California San Francisco, San Francisco, California
| |
Collapse
|
29
|
Whiley L, Nye LC, Grant I, Andreas N, Chappell KE, Sarafian MH, Misra R, Plumb RS, Lewis MR, Nicholson JK, Holmes E, Swann JR, Wilson ID. Ultrahigh-Performance Liquid Chromatography Tandem Mass Spectrometry with Electrospray Ionization Quantification of Tryptophan Metabolites and Markers of Gut Health in Serum and Plasma-Application to Clinical and Epidemiology Cohorts. Anal Chem 2019; 91:5207-5216. [PMID: 30848589 PMCID: PMC6503468 DOI: 10.1021/acs.analchem.8b05884] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
![]()
A targeted
ultrahigh-performance liquid chromatography tandem mass
spectrometry with electrospray ionization (UHPLC-ESI-MS/MS) method
has been developed for the quantification of tryptophan and its downstream
metabolites from the kynurenine and serotonin pathways. The assay
coverage also includes markers of gut health and inflammation, including
citrulline and neopterin. The method was designed in 96-well plate
format for application in multiday, multiplate clinical and epidemiology
population studies. A chromatographic cycle time of 7 min enables
the analysis of two 96-well plates in 24 h. To protect chromatographic
column lifespan, samples underwent a two-step extraction, using solvent
protein precipitation followed by delipidation via solid-phase extraction
(SPE). Analytical validation reported accuracy of each analyte <20%
for the lowest limit of quantification and <15% for all other quality
control (QC) levels. The analytical precision for each analyte was
2.1–12.9%. To test the applicability of the method to multiplate
and multiday preparations, a serum pool underwent periodic repeat
analysis during a run consisting of 18 plates. The % CV (coefficient
of variation) values obtained for each analyte were <15%. Additional
biological testing applied the assay to samples collected from healthy
control participants and two groups diagnosed with inflammatory bowel
disease (IBD) (one group treated with the anti-inflammatory 5-aminosalicylic
acid (5-ASA) and one group untreated), with results showing significant
differences in the concentrations of picolinic acid, kynurenine, and
xanthurenic acid. The short analysis time and 96-well plate format
of the assay makes it suitable for high-throughput targeted UHPLC-ESI-MS/MS
metabolomic analysis in large-scale clinical and epidemiological population
studies.
Collapse
Affiliation(s)
- Luke Whiley
- UK Dementia Research Institute, Burlington Danes Building , Imperial College London , Hammersmith Hospital, London W12 0NN , United Kingdom.,MRC-NIHR National Phenome Centre, IRDB Building , Imperial College London , Hammersmith Hospital, London W12 0NN , United Kingdom
| | - Leanne C Nye
- Division of Integrative Systems and Digestive Medicine, Department of Surgery and Cancer , Imperial College London , Sir Alexander Fleming Building, South Kensington Campus , London SW7 2AZ , United Kingdom
| | - Isobelle Grant
- Division of Integrative Systems and Digestive Medicine, Department of Surgery and Cancer , Imperial College London , Sir Alexander Fleming Building, South Kensington Campus , London SW7 2AZ , United Kingdom.,Waters Corporation , Milford , Massachusetts 01757 , United States
| | - Nick Andreas
- Division of Integrative Systems and Digestive Medicine, Department of Surgery and Cancer , Imperial College London , Sir Alexander Fleming Building, South Kensington Campus , London SW7 2AZ , United Kingdom
| | - Katie E Chappell
- MRC-NIHR National Phenome Centre, IRDB Building , Imperial College London , Hammersmith Hospital, London W12 0NN , United Kingdom
| | - Magali H Sarafian
- Division of Integrative Systems and Digestive Medicine, Department of Surgery and Cancer , Imperial College London , Sir Alexander Fleming Building, South Kensington Campus , London SW7 2AZ , United Kingdom
| | - Ravi Misra
- St. Marks Hospital and Academic Institute , Watford Road , Middlesex, London HA1 3UJ , United Kingdom
| | - Robert S Plumb
- Waters Corporation , Milford , Massachusetts 01757 , United States
| | - Matthew R Lewis
- MRC-NIHR National Phenome Centre, IRDB Building , Imperial College London , Hammersmith Hospital, London W12 0NN , United Kingdom
| | - Jeremy K Nicholson
- Australian National Phenome Centre , Murdoch University , Harry Perkins Building , Perth , Western Australia 6150 , Australia
| | - Elaine Holmes
- UK Dementia Research Institute, Burlington Danes Building , Imperial College London , Hammersmith Hospital, London W12 0NN , United Kingdom.,MRC-NIHR National Phenome Centre, IRDB Building , Imperial College London , Hammersmith Hospital, London W12 0NN , United Kingdom.,Division of Integrative Systems and Digestive Medicine, Department of Surgery and Cancer , Imperial College London , Sir Alexander Fleming Building, South Kensington Campus , London SW7 2AZ , United Kingdom.,Australian National Phenome Centre , Murdoch University , Harry Perkins Building , Perth , Western Australia 6150 , Australia
| | - Jonathan R Swann
- Division of Integrative Systems and Digestive Medicine, Department of Surgery and Cancer , Imperial College London , Sir Alexander Fleming Building, South Kensington Campus , London SW7 2AZ , United Kingdom
| | - Ian D Wilson
- Division of Integrative Systems and Digestive Medicine, Department of Surgery and Cancer , Imperial College London , Sir Alexander Fleming Building, South Kensington Campus , London SW7 2AZ , United Kingdom
| |
Collapse
|
30
|
Vondroušová J, Mikoška M, Syslová K, Böhmová A, Tejkalová H, Vacek L, Kodym P, Krsek D, Horáček J. Monitoring of kynurenine pathway metabolites, neurotransmitters and their metabolites in blood plasma and brain tissue of individuals with latent toxoplasmosis. J Pharm Biomed Anal 2019; 170:139-152. [PMID: 30925271 DOI: 10.1016/j.jpba.2019.03.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 03/14/2019] [Accepted: 03/17/2019] [Indexed: 12/17/2022]
Abstract
The aim of the presented work was to develop a highly sensitive, accurate and rapid analytical method for the determination of concentration levels of tryptophan and its metabolites of kynurenine catabolic pathway, as well as neurotransmitters and their metabolites in complex biological matrices (brain tissue and blood plasma). The developed analytical method consists of analytes separation from the biological matrices by protein precipitation (blood plasma) or solvent extraction (brain tissue), derivatization of the analytes and their detection by high-performance liquid chromatography combined with mass spectrometry. Individual steps of the whole process were optimized and the method was validated in the terms of selectivity, linearity (R2≥0.980), precision (RSD ≤ 13.3%), recovery (≥82.0%), limit of detection (1.8 ng/mL of blood plasma, 2.2 pg/mg of brain tissue) and limit of quantification (2.5 ng/mL of blood plasma, 2.8 pg/mg of brain tissue). The method was subsequently verified by an animal study, where the concentration levels of the analytes in biological matrices (blood plasma and brain tissue) of T. gondii - infected rats and control animals were compared. All the data obtained from the animal study were statistically evaluated. Increased concentration levels of kynurenine catabolic pathway metabolites (e.g. kynurenine, 3-hydroxykynurenine, quinolinic acid) were observed in the case of T. gondii - infected rats in contrast to the control group. The opposite effect was determined in the case of serotonin and its metabolite 5-hydroxyindoleacetic acid, where higher concentration levels were found in blood plasma of healthy subjects. Finally, Principal Component Analysis (PCA) was utilized for a score plot formation. PCA score plots have demonstrated the similarities of individuals within each group and the differences among the groups.
Collapse
Affiliation(s)
- Jana Vondroušová
- Department of Organic Technology, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czech Republic
| | - Miloš Mikoška
- Department of Organic Technology, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czech Republic
| | - Kamila Syslová
- Department of Organic Technology, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czech Republic.
| | - Adéla Böhmová
- Department of Organic Technology, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czech Republic
| | - Hana Tejkalová
- National Institute of Mental Health, Topolová 748, 250 67, Klecany, Czech Republic
| | - Lukáš Vacek
- Third Faculty of Medicine, Charles University, Ruská 87, 100 00, Prague 10, Czech Republic
| | - Petr Kodym
- The National Institute of Public Health, Šrobárova 48, 100 42, Prague 10, Czech Republic
| | - Daniel Krsek
- The National Institute of Public Health, Šrobárova 48, 100 42, Prague 10, Czech Republic
| | - Jiří Horáček
- National Institute of Mental Health, Topolová 748, 250 67, Klecany, Czech Republic
| |
Collapse
|
31
|
Chen GY, Zhong W, Zhou Z, Zhang Q. Simultaneous determination of tryptophan and its 31 catabolites in mouse tissues by polarity switching UHPLC-SRM-MS. Anal Chim Acta 2018; 1037:200-210. [PMID: 30292294 PMCID: PMC6224157 DOI: 10.1016/j.aca.2018.02.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/08/2018] [Accepted: 02/10/2018] [Indexed: 12/11/2022]
Abstract
Tryptophan (TRP) and its catabolites have attracted a lot of attention because of their clinical significance to human health. Recently, microbiome-gut-brain axis was found to have links to many diseases based on the imbalance of TRP catabolism. By using ultra-high performance liquid chromatography coupled to electrospray ionization triple quadrupole mass spectrometry, we present a rapid, robust and comprehensive method to determine 31 TRP catabolites covering three major pathways - kynurenic, serotonergic and bacterial degradation - within 5 min. Polarity switching was employed to analyze catabolites in both ionization modes simultaneously for greatly improved analytical throughput. The intra-day and inter-day precision were 0.5-15.8% and 1.5-16.7%, respectively. Accuracy was between 75.8 and 126.9%. The developed method was applied to study the tissue level of TRP catabolites in the liver, ileum, ileal contents, brain and plasma samples from 8 mice, and clear differences in the distribution of TRP catabolites were observed in different tissues. Ratios of key catabolites to TRP were used to evaluate the activities of specific enzyme and pathway in respective tissues. This method has potential in high throughput analysis of TRP catabolites in biological matrices, which can facilitate understanding the influence of TRP catabolites on microbiome-gut-brain axis and on human health.
Collapse
Affiliation(s)
- Guan-Yuan Chen
- Center for Translational Biomedical Research, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, NC, 28081, USA
| | - Wei Zhong
- Center for Translational Biomedical Research, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, NC, 28081, USA
| | - Zhanxiang Zhou
- Center for Translational Biomedical Research, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, NC, 28081, USA; Department of Nutrition, University of North Carolina at Greensboro, Greensboro, NC, 27412, USA
| | - Qibin Zhang
- Center for Translational Biomedical Research, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, NC, 28081, USA; Department of Chemistry & Biochemistry, University of North Carolina at Greensboro, Greensboro, NC, 27412, USA.
| |
Collapse
|
32
|
Determination of Tryptophan and Its Major Metabolites in Fluid from the Anterior Chamber of the Eye in Diabetic Patients with Cataract by Liquid Chromotography Mass Spectrometry (LC-MS/MS). Molecules 2018; 23:molecules23113012. [PMID: 30453653 PMCID: PMC6278302 DOI: 10.3390/molecules23113012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/12/2018] [Accepted: 11/15/2018] [Indexed: 12/22/2022] Open
Abstract
Tryptophan (TRP) is to an essential amino acid and its catabolites are significant to human health. By using ultra-high-performance liquid chromatography coupled to electrospray ionization triple quadrupole mass spectrometry (UHPLC-ESI-MS/MS), levels of three major components of kynurenic pathway namely tryptophan (TRP), kynurenic acid (KYNA) and kynurenine (KYN) in fluid from the anterior chamber of the eye were determined. The analysis was carried out on a Synergi 4 μ Fusion-RP column using gradient elution mode. For quantitative determination, l-tryptophan-amino-15N, 99 ATOM % 15N was used as an internal standard. The method was linear in the concentration range 4–2000 ng mL−1 for TRP, KYNA and KYN. The mean recoveries measured at four concentration levels for TRP, KYN and KYNA included the following ranges 94.3–96.1; 91.0–95.0; and 96.0–97.6%, respectively. The intra-day precision parameters were smaller than 4.4, 6.4 and 5% respectively. The developed method was applied to study the level of TRP, KYNA and KYN in eye fluid for the retrospective case series which included 28 patients suffering from cataracts and diabetes (n = 8). The experimental data was subjected to statistical analysis. The Mann-Whitney U-test revealed clear differences in the level of TRP catabolites and the ratios of TRP/KYN representing the activities of specific enzyme of kynurenine pathway in examined groups of patients. A level of probability p < 0.05 was used throughout a paper to denote statistically significant differences between the groups.
Collapse
|
33
|
Deng YT, Zhao MG, Xu TJ, Li XH. Gentiopicroside abrogates lipopolysaccharide-induced depressive-like behavior in mice through tryptophan-degrading pathway. Metab Brain Dis 2018; 33:1413-1420. [PMID: 29948656 DOI: 10.1007/s11011-018-0246-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 05/02/2018] [Indexed: 01/08/2023]
Abstract
Targeting neuroinflammatory disturbances has been acknowledged as a potential strategy for treatment of depressive disorder in humans. Over-activation of tryptophan-degrading pathway by pro-inflammatory cytokines resulted in N-methyl-d-aspartate (NMDA)-mediated excitotoxicity, which is implicated in pathophysiology of depression. Gentiopicroside (Gent) has powerful anti-inflammatory property and exhibits promising antidepressant effect in an animal model of pain/depression dyad by down-regulating GluN2B-containing NMDA receptors. Therefore, the present study aimed to investigate the ability of Gent to abolish depressive-like behavior induced by lipopolysaccharide (LPS) in mice. Acute administration of LPS (0.5 mg/kg, i.p.) increased immobility time in both forced swimming test (FST) and tail suspension test (TST) without affecting spontaneous locomotor activity, indicative of depressive-like behavior. Gent (50 mg/kg, i.p.) administered once a day for three consecutive days prevented the development of depressive-like behavior induced by LPS. The antidepressant-like effect was paralleled with restoration of LPS-induced alterations in brain inflammatory mediators (i.e. IL-1β and TNF-α). In addition, Gent prevented over-activation of indoleamine 2,3-double oxygen enzyme (IDO) and recovered GluN2B subunit expression in the PFC challenged by LPS. In conclusion, our results suggested that Gent pretreatment provided protection against LPS-induced depressive-like behavior and the effect appeared to be demonstrated, at least partially, by blocking various steps of tryptophan-degrading pathway.
Collapse
Affiliation(s)
- Ya-Ting Deng
- Department of Pharmacology, School of Pharmacy, Xi'an Medical University, Xi'an, 710021, China.
- Department of Pharmacology, Fourth Military Medical University, Xi'an, 710032, China.
| | - Ming-Gao Zhao
- Department of Pharmacology, Fourth Military Medical University, Xi'an, 710032, China.
| | - Tian-Jiao Xu
- Department of Pharmacology, School of Pharmacy, Xi'an Medical University, Xi'an, 710021, China
| | - Xin-Hua Li
- Department of Pharmacology, School of Pharmacy, Xi'an Medical University, Xi'an, 710021, China
| |
Collapse
|
34
|
Lee SC, Chua LL, Yap SH, Khang TF, Leng CY, Raja Azwa RI, Lewin SR, Kamarulzaman A, Woo YL, Lim YAL, Loke P, Rajasuriar R. Enrichment of gut-derived Fusobacterium is associated with suboptimal immune recovery in HIV-infected individuals. Sci Rep 2018; 8:14277. [PMID: 30250162 PMCID: PMC6155144 DOI: 10.1038/s41598-018-32585-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 09/06/2018] [Indexed: 12/21/2022] Open
Abstract
We explored the gut microbiota profile among HIV-infected individuals with diverse immune recovery profiles following long-term suppressive ART and investigated the relationship between the altered bacteria with markers of immune dysfunction. The microbiota profile of rectal swabs from 26 HIV-infected individuals and 20 HIV-uninfected controls were examined. Patients were classified as suboptimal responders, sIR (n = 10, CD4 T-cell <350 cells/ul) and optimal responders, oIR (n = 16, CD4 T-cell >500 cells/ul) after a minimum of 2 years on suppressive ART. Canonical correlation analysis(CCA) and multiple regression modelling were used to explore the association between fecal bacterial taxa abundance and immunological profiles in optimal and suboptimal responders. We found Fusobacterium was significantly enriched among the HIV-infected and the sIR group. CCA results showed that Fusobacterium abundance was negatively correlated with CD4 T-cell counts, but positively correlated with CD4 T-cell activation and CD4 Tregs. Multiple linear regression analysis adjusted for age, baseline CD4 T-cell count, antibiotic exposure and MSM status indicated that higher Fusobacterium relative abundance was independently associated with poorer CD4 T-cell recovery following ART. Enrichment of Fusobacterium was associated with reduced immune recovery and persistent immune dysfunction following ART. Modulating the abundance of this bacterial taxa in the gut may be a viable intervention to improve immune reconstitution in our setting.
Collapse
Affiliation(s)
- Soo Ching Lee
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, 50603, Kuala Lumpur, Malaysia.,Department of Parasitology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Ling Ling Chua
- University Malaya Cancer Research Institute, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Siew Hwei Yap
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Tsung Fei Khang
- Institute of Mathematical Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.,University of Malaya Centre for Data Analytics, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Chan Yoon Leng
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Raja Iskandar Raja Azwa
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, 50603, Kuala Lumpur, Malaysia.,Department of Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Sharon R Lewin
- Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia.,Department of Infectious Diseases, Monash University and Alfred Hospital; Royal Melbourne Hospital, Melbourne, Australia
| | - Adeeba Kamarulzaman
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, 50603, Kuala Lumpur, Malaysia.,Department of Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Yin Ling Woo
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, 50603, Kuala Lumpur, Malaysia.,University Malaya Cancer Research Institute, University of Malaya, 50603, Kuala Lumpur, Malaysia.,Department of Obstetrics and Gynecology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Yvonne Ai Lian Lim
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, 50603, Kuala Lumpur, Malaysia.,Department of Parasitology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - P'ng Loke
- Department of Microbiology and Medicine, New York University School of Medicine, New York, NY, 10016, USA.
| | - Reena Rajasuriar
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, 50603, Kuala Lumpur, Malaysia. .,Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia. .,Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| |
Collapse
|
35
|
Determination of kynurnine and tryptophan, biomarkers of indoleamine 2,3-dioxygenase by LC-MS/MS in plasma and tumor. Bioanalysis 2018; 10:1335-1344. [PMID: 30130131 DOI: 10.4155/bio-2018-0041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
AIM Tryptophan (Trp) and kynurnine (Kyn) are a pair of biomarkers for indoleamine 2,3-dioxygenase which closely related to the tumor immune escape. To evaluate the effect of drugs on the indoleamine 2,3-dioxygenase activity, the specific and accurate LC-MS/MS methods were developed and validated for simultaneous determination Kyn and Trp in mouse plasma and tumor tissues using surrogate analytes Kyn-d4 and Trp-d5 calibrators. RESULTS Plasma and tumor homogenates samples were pretreated with the solid phase extraction which assured the method having high recovery (>90% in plasma and >80% in tumor) and no matrix effect. The methods were validated for specificity, linearity, accuracy and precision, recovery, matrix effect and stability using surrogate analytes Kyn-d4 and Trp-d5 in authentic matrices. CONCLUSION The validated methods have been successfully applied to the pharmacodynamic study of INCB024360 in CT26 tumor bearing mice after single dose and multiple dosing.
Collapse
|
36
|
A validated surrogate analyte LC–MS/MS assay for quantitation of endogenous kynurenine and tryptophan in human plasma. Bioanalysis 2018; 10:1307-1317. [DOI: 10.4155/bio-2018-0044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Aim: Indoleamine 2,3-dioxygenase (IDO) and tryptophan 2,3-dioxygenase (TDO) catalyze the initial and rate-controlling step of tryptophan metabolism through the kynurenine pathway, which plays an important role in mediating immune response. Accurate measurement of tryptophan and kynurenine is critical for monitoring the activity of IDO/TDO. Experimental: Surrogate analytes ([15N2]-Tryptophan and [13C6]-Kynurenine) were used for preparation of calibration standard and quality control. A fit-for-purpose validation using an approach of surrogate analyte and authentic matrix was carried out. Results: Acid precipitation was used in sample preparation, which yielded good recovery without significant matrix effect. Precision and accuracy results were well within the acceptance criteria. The assay demonstrated successful application to a clinical study to confirm a transient depletion of kynurenine upon IDO inhibition. Conclusion: A robust, specific and simple LC–MS/MS method was developed and validated with a fit-for-purpose style for measuring tryptophan and kynurenine in human plasma samples.
Collapse
|
37
|
Mergola L, Orabona C, Albini E, Vasapollo G, Scorrano S, Del Sole R. Urinary l
-kynurenine quantification and selective extraction through a molecularly imprinted solid-phase extraction device. J Sep Sci 2018; 41:3204-3212. [DOI: 10.1002/jssc.201800458] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/12/2018] [Accepted: 06/15/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Lucia Mergola
- Department of Engineering for Innovation; University of Salento; Lecce Italy
| | - Ciriana Orabona
- Section of Pharmacology, Department of Experimental Medicine; University of Perugia; Perugia Italy
| | - Elisa Albini
- Section of Pharmacology, Department of Experimental Medicine; University of Perugia; Perugia Italy
| | - Giuseppe Vasapollo
- Department of Engineering for Innovation; University of Salento; Lecce Italy
| | - Sonia Scorrano
- Department of Engineering for Innovation; University of Salento; Lecce Italy
| | - Roberta Del Sole
- Department of Engineering for Innovation; University of Salento; Lecce Italy
| |
Collapse
|
38
|
Adu-Gyamfi CG, Snyman T, Hoffmann CJ, Martinson NA, Chaisson RE, George JA, Suchard MS. Plasma Indoleamine 2, 3-Dioxygenase, a Biomarker for Tuberculosis in Human Immunodeficiency Virus-Infected Patients. Clin Infect Dis 2018; 65:1356-1358. [PMID: 29017244 PMCID: PMC5848309 DOI: 10.1093/cid/cix550] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Accepted: 06/12/2017] [Indexed: 12/31/2022] Open
Abstract
Background There is no biomarker for diagnosing active tuberculosis in patients with human immunodeficiency virus (HIV) infection. Indoleamine 2, 3-dioxygenase (IDO) is an immunoregulatory enzyme that breaks down tryptophan (Trp) to metabolites known as kynurenines (Kyns). We investigated whether IDO activity, as measured by the ratio of Kyn to Trp, could be used to diagnose or predict active tuberculosis disease in HIV-infected adults. Methods Kyn and Trp concentrations were measured using ultraperformance liquid chromatography mass spectrometry in plasma samples from 32 HIV-infected patients in whom active tuberculosis developed and who were followed up prospectively. We compared to 70 HIV-infected control subjects from the same cohort in whom tuberculosis did not develop, matched by age, sex, and CD4 cell count, and 37 unmatched HIV-infected patients with a diagnosis of pneumonia. Clinical parameters, including body mass index, CD4 cell count, HIV load, and C-reactive protein levels were analyzed. Results At the time of tuberculosis diagnosis, IDO activity was significantly higher in patients with tuberculosis than in controls (P < .001). Six months before tuberculosis diagnosis, IDO activity was significantly higher in all patients who later developed tuberculosis (P < .001) than controls. After 6 months of tuberculosis treatment, IDO activity in patients with tuberculosis declined to levels similar to those in controls. IDO activity was 4-fold higher in patients with tuberculosis than in those with pneumonia, and could be used to distinguish them. With a receiver operating characteristic curve, IDO activity had a sensitivity of 97%, a specificity of 99%, and positive and negative predictive values of 89% and 100% for detecting active tuberculosis disease. Conclusion Plasma IDO activity is suitable as a biomarker of active tuberculosis in HIV-positive patients.
Collapse
Affiliation(s)
- Clement G Adu-Gyamfi
- Centre for Vaccines & Immunology, National Institute for Communicable Diseases, Division of the National Health Laboratory Service.,Department of Chemical Pathology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand & National Health Laboratory Service, Johannesburg, South Africa
| | - Tracy Snyman
- Department of Chemical Pathology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand & National Health Laboratory Service, Johannesburg,South Africa
| | | | - Neil A Martinson
- Perinatal Health Research Unit, DST/NRF Centre of Excellence for Biomedical TB Research, and Soweto Matlosana Collaborating Centre for HIV/AIDS and TB, University of the Witwatersrand, Johannesburg, South Africa
| | | | - Jaya A George
- Department of Chemical Pathology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand & National Health Laboratory Service, Johannesburg,South Africa
| | - Melinda S Suchard
- Centre for Vaccines & Immunology, National Institute for Communicable Diseases, Division of the National Health Laboratory Service.,Department of Chemical Pathology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand & National Health Laboratory Service, Johannesburg, South Africa
| |
Collapse
|
39
|
Du TT, Cui T, Qiu HM, Wang NR, Huang D, Jiang XH. Simultaneous determination of tryptophan, kynurenine, kynurenic acid and two monoamines in rat plasma by HPLC-ECD/DAD. J Pharm Biomed Anal 2018; 158:8-14. [PMID: 29843007 DOI: 10.1016/j.jpba.2018.05.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 05/15/2018] [Accepted: 05/19/2018] [Indexed: 01/23/2023]
Abstract
A high-performance liquid chromatography method with a diode array and an electrochemical detection (HPLC-ECD/DAD) was developed to determine the levels of tryptophan (TRP), kynurenine (KYN), kynurenic acid (KYA), 5-hydroxytryptamine (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) in rat plasma. The prepared samples were separated on a BDS column (4.6 mm × 250 mm, 5 mm) with column oven temperature of 25 °C. The mobile phase consisted of 5% acetonitrile and a buffer solution, which contained 25 mmol/L sodium acetate and 0.01 mmol/L EDTA, adjusting pH to 4.5 with acetic acid, and it was pumped at a flow-rate of 1.0 mL/min. KYN and KYA were measured by a variable wavelength detector at wavelengths 360 nm and 333 nm respectively, TRP and vanillic acid (as IS) both were measured at 280 nm. Determination of 5-HT and 5-HIAA was accomplished at the electrochemical working potential of 700 mV. Total run time was 14 min. Several parameters of the developed method were validated including linearity, accuracy precision, and stability. The results showed the established method had good LOD and separation for all of the five compounds and IS in the biological matrix. The method is simple, fast, economical and accurate. The analytical method and the results could provide a reference for the clinical and scientific research of depression.
Collapse
Affiliation(s)
- Ting-Ting Du
- School of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Ting Cui
- Zunyi Medical and Pharmaceutical College, Zunyi, 563006, China
| | - Hong-Mei Qiu
- School of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | | | - Dan Huang
- School of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Xin-Hui Jiang
- School of Pharmacy, Chongqing Medical University, Chongqing, 400016, China.
| |
Collapse
|
40
|
Kared H, Martelli S, Tan SW, Simoni Y, Chong ML, Yap SH, Newell EW, Pender SLF, Kamarulzaman A, Rajasuriar R, Larbi A. Adaptive NKG2C +CD57 + Natural Killer Cell and Tim-3 Expression During Viral Infections. Front Immunol 2018; 9:686. [PMID: 29731749 PMCID: PMC5919961 DOI: 10.3389/fimmu.2018.00686] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 03/20/2018] [Indexed: 12/13/2022] Open
Abstract
Repetitive stimulation by persistent pathogens such as human cytomegalovirus (HCMV) or human immunodeficiency virus (HIV) induces the differentiation of natural killer (NK) cells. This maturation pathway is characterized by the acquisition of phenotypic markers, CD2, CD57, and NKG2C, and effector functions—a process regulated by Tim-3 and orchestrated by a complex network of transcriptional factors, involving T-bet, Eomes, Zeb2, promyelocytic leukemia zinc finger protein, and Foxo3. Here, we show that persistent immune activation during chronic viral co-infections (HCMV, hepatitis C virus, and HIV) interferes with the functional phenotype of NK cells by modulating the Tim-3 pathway; a decrease in Tim-3 expression combined with the acquisition of inhibitory receptors skewed NK cells toward an exhausted and cytotoxic phenotype in an inflammatory environment during chronic HIV infection. A better understanding of the mechanisms underlying NK cell differentiation could aid the identification of new immunological targets for checkpoint blockade therapies in a manner that is relevant to chronic infection and cancer.
Collapse
Affiliation(s)
- Hassen Kared
- Singapore Immunology Network (SIgN), Aging and Immunity Program, Agency for Science Technology and Research (ASTAR), Singapore, Singapore
| | - Serena Martelli
- Singapore Immunology Network (SIgN), Aging and Immunity Program, Agency for Science Technology and Research (ASTAR), Singapore, Singapore.,Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Shu Wen Tan
- Singapore Immunology Network (SIgN), Aging and Immunity Program, Agency for Science Technology and Research (ASTAR), Singapore, Singapore
| | - Yannick Simoni
- Singapore Immunology Network (SIgN), Aging and Immunity Program, Agency for Science Technology and Research (ASTAR), Singapore, Singapore
| | - Meng Li Chong
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
| | - Siew Hwei Yap
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
| | - Evan W Newell
- Singapore Immunology Network (SIgN), Aging and Immunity Program, Agency for Science Technology and Research (ASTAR), Singapore, Singapore
| | - Sylvia L F Pender
- Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Adeeba Kamarulzaman
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia.,Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Reena Rajasuriar
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia.,Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.,The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
| | - Anis Larbi
- Singapore Immunology Network (SIgN), Aging and Immunity Program, Agency for Science Technology and Research (ASTAR), Singapore, Singapore.,Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| |
Collapse
|
41
|
Yarbrough ML, Briden KE, Mitsios JV, Weindel AL, Terrill CM, Hunstad DA, Dietzen DJ. Mass spectrometric measurement of urinary kynurenine-to-tryptophan ratio in children with and without urinary tract infection. Clin Biochem 2018; 56:83-88. [PMID: 29679555 DOI: 10.1016/j.clinbiochem.2018.04.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 03/26/2018] [Accepted: 04/16/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND Indoleamine-2,3-dioxygenase (IDO) catalyzes the first step of tryptophan (Trp) catabolism, yielding kynurenine (Kyn) metabolites. The kynurenine-to-tryptophan (K/T) ratio is used as a surrogate for biological IDO enzyme activity. IDO expression is increased during Escherichia coli urinary tract infection (UTI). Thus, our objective was to develop a method for measurement of Kyn/Trp ratio in human blood and urine and evaluate its use as a biomarker of UTI. METHODS A mass spectrometric method was developed to measure Trp and Kyn in serum and urine specimens. The method was applied to clinical urine specimens from symptomatic pediatric patients with laboratory-confirmed UTI or other acute conditions and from healthy controls. RESULTS The liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was linear to 500 μmol/L for both Trp and Kyn. Imprecision ranged from 5 to 15% for Trp and 6-20% for Kyn. Analytical recoveries of Trp and Kyn ranged from 96 to 119% in serum and 90-97% in urine. No correlation was found between the K/T ratio and circulating IDO mass (r = 0.110) in serum. Urinary Kyn and Trp in the pediatric test cohort demonstrated elevations in the K/T ratio in symptomatic patients with UTI (median 13.08) and without UTI (median 14.38) compared to healthy controls (median 4.93; p < 0.001 for both comparisons). No significant difference in K/T ratio was noted between symptomatic patients with and without UTI (p = 0.84). CONCLUSIONS Measurement of Trp and Kyn by LC-MS/MS is accurate and precise in serum and urine specimens. While urinary K/T ratio is not a specific biomarker for UTI, it may represent a general indicator of a systemic inflammatory process.
Collapse
Affiliation(s)
- Melanie L Yarbrough
- Departments of Pathology and Immunology, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Kelleigh E Briden
- Departments of Pediatrics, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - John V Mitsios
- Departments of Pathology and Immunology, School of Medicine, Washington University, St. Louis, Missouri, USA
| | | | - Cindy M Terrill
- Departments of Pediatrics, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - David A Hunstad
- Departments of Pediatrics, School of Medicine, Washington University, St. Louis, Missouri, USA; Departments of Molecular Microbiology, School of Medicine, Washington University, St. Louis, Missouri, USA
| | - Dennis J Dietzen
- Departments of Pathology and Immunology, School of Medicine, Washington University, St. Louis, Missouri, USA; Departments of Pediatrics, School of Medicine, Washington University, St. Louis, Missouri, USA.
| |
Collapse
|
42
|
Wang J, Li X, He S, Hu L, Guo J, Huang X, Hu J, Qi Y, Chen B, Shang D, Wen Y. Regulation of the kynurenine metabolism pathway by Xiaoyao San and the underlying effect in the hippocampus of the depressed rat. JOURNAL OF ETHNOPHARMACOLOGY 2018; 214:13-21. [PMID: 29217494 DOI: 10.1016/j.jep.2017.11.037] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 10/31/2017] [Accepted: 11/30/2017] [Indexed: 06/07/2023]
Abstract
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. Behavioral assessments, including an open field test (OFT), sucrose preference test (SPT) and forced swim test (FST), were conducted to evaluate the antidepressant effects of XYS. The concentrations in rat plasma of tryptophan (Trp) and its metabolic products, including kynurenine (Kyn) and quinolinic acid (QUIN), were determined using high performance liquid chromatography tandem mass spectrometry with electrochemical detection (HPLC-MS/MS). The mRNA and protein levels in rat hippocampus of depression-related brain derived neurotrophic factor (BDNF), cyclic AMP response element binding protein (CREB) and nerve cell adhesion molecule (NCAM) were determined by real-time qPCR and Western blot, respectively. Enzyme Linked Immunosorbent Assay (ELISA) was used to detect the activities of indoleamine 2,3-dioxygenase (IDO) and kynurenine-3-monooxygenase (KMO) in rat plasma. RESULTS The results showed that a successful CUMS rat model was established through 4 weeks of continuous unpredictable stimulation, as indicated by the significant decrease in locomotor activity and increase in immobility time in the OFT, reduction in body weight and food intake etc. Compared with the normal group, the concentrations of Kyn and QUIN had significantly (p < 0.05) decreased at day 28 in the control group, but then improved after drug treatment with paroxetine and XYS. There were no obvious changes in the activities of IDO and KMO. Compared with the normal group, the mRNA of NCAM, CREB and BDNF were significantly down-regulated (p < 0.001) in the control group, BDNF gene was up-regulated by paroxetine or XYS treatment, NCAM and CREB gene did not change in XYS group, protein expressions of BDNF and CREB were significantly increased, and NCAM was significantly reduced (p < 0.05). CONCLUSIONS XYS reversed the abnormalities of the tryptophan-kynurenine metabolic pathways in depressed rats and achieved an excellent antidepressant effect. Its direct impact may be observed as changes in biological indicators in rat hippocampus tissue.
Collapse
Affiliation(s)
- Jiajia Wang
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), 36 Mingxin Road, Guangzhou 510370, PR China; Guangzhou University of Traditional Chinese Medicine, 16 Airport Road, Guangzhou 510405, PR China
| | - Xiaofang Li
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), 36 Mingxin Road, Guangzhou 510370, PR China
| | - Shugui He
- Guangzhou University of Traditional Chinese Medicine, 16 Airport Road, Guangzhou 510405, PR China
| | - Lijun Hu
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), 36 Mingxin Road, Guangzhou 510370, PR China
| | - Jiewen Guo
- Guangzhou Hospital of Traditional Chinese Medicine, 16 Zhuji Road, Guangzhou 510130, PR China
| | - Xiangning Huang
- Guangzhou Xinhai Hospital, Guangzhou, 167 Xingang West Road, Guangzhou 510300, PR China
| | - Jinqing Hu
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), 36 Mingxin Road, Guangzhou 510370, PR China
| | - Yaoqun Qi
- Guangzhou University of Traditional Chinese Medicine, 16 Airport Road, Guangzhou 510405, PR China
| | - Bin Chen
- Guangzhou University of Traditional Chinese Medicine, 16 Airport Road, Guangzhou 510405, PR China
| | - Dewei Shang
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), 36 Mingxin Road, Guangzhou 510370, PR China.
| | - Yuguan Wen
- The Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), 36 Mingxin Road, Guangzhou 510370, PR China.
| |
Collapse
|
43
|
Yap SH, Abdullah NK, McStea M, Takayama K, Chong ML, Crisci E, Larsson M, Azwa I, Kamarulzaman A, Leong KH, Woo YL, Rajasuriar R. HIV/Human herpesvirus co-infections: Impact on tryptophan-kynurenine pathway and immune reconstitution. PLoS One 2017; 12:e0186000. [PMID: 29016635 PMCID: PMC5633182 DOI: 10.1371/journal.pone.0186000] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 09/22/2017] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Co-infections with human herpesvirus (HHV) have been associated with residual chronic inflammation in antiretroviral (ART)-treated human immunodeficiency virus (HIV)-infected individuals. However, the role of HHV in modulating the tryptophan-kynurenine pathway and clinical outcomes in HIV-infected individuals is poorly understood. Thus, we investigated the seroprevalence of four common HHVs among treated HIV-infected participants and their impact on kynurenine/tryptophan (K/T) ratio and long-term CD4 T-cell recovery in HIV/HHV co-infected participants. METHOD In this cross-sectional study, HIV-infected participants receiving suppressive ART for a minimum of 12 months were recruited from the University Malaya Medical Centre (UMMC), Malaysia. Stored plasma was analyzed for CMV, VZV, HSV-1 and HSV-2 IgG antibody levels, immune activation markers (interleukin-6, interferon-γ, neopterin and sCD14), kynurenine and tryptophan concentrations. The influence of the number of HHV co-infection and K/T ratio on CD4 T-cell recovery was assessed using multivariate Poisson regression. RESULTS A total of 232 HIV-infected participants were recruited and all participants were seropositive for at least one HHV; 96.1% with CMV, 86.6% with VZV, 70.7% with HSV-1 and 53.9% with HSV-2. K/T ratio had a significant positive correlation with CMV (rho = 0.205, p = 0.002), VZV (rho = 0.173, p = 0.009) and a tendency with HSV-2 (rho = 0.120, p = 0.070), with CMV antibody titer demonstrating the strongest modulating effect on K/T ratio among the four HHVs assessed in SOM analysis. In multivariate analysis, higher K/T ratio (p = 0.03) and increasing number of HHV co-infections (p<0.001) were independently associated with poorer CD4 T-cell recovery following 12 months of ART initiation. CONCLUSION Multiple HHV co-infections are common among ART-treated HIV-infected participants in the developing country setting and associated with persistent immune activation and poorer CD4 T-cell recovery.
Collapse
Affiliation(s)
- Siew Hwei Yap
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
| | - Noor Kamila Abdullah
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
| | - Megan McStea
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
| | - Kozo Takayama
- Department of Pharmaceutics, Hoshi University, Tokyo, Japan
| | - Meng Li Chong
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
| | - Elisa Crisci
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Marie Larsson
- Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Iskandar Azwa
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
- Department of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Adeeba Kamarulzaman
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
- Department of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Kok Hoong Leong
- Department of Pharmacy, University of Malaya, Kuala Lumpur, Malaysia
| | - Yin Ling Woo
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
- Department of Obstetrics & Gynecology, University of Malaya, Kuala Lumpur, Malaysia
| | - Reena Rajasuriar
- Centre of Excellence for Research in AIDS (CERiA), University of Malaya, Kuala Lumpur, Malaysia
- Department of Pharmacy, University of Malaya, Kuala Lumpur, Malaysia
- Peter Doherty Institute for Infection and Immunity, Melbourne University, Victoria, Australia
| |
Collapse
|
44
|
Sadok I, Gamian A, Staniszewska MM. Chromatographic analysis of tryptophan metabolites. J Sep Sci 2017; 40:3020-3045. [PMID: 28590049 PMCID: PMC5575536 DOI: 10.1002/jssc.201700184] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 05/15/2017] [Accepted: 05/24/2017] [Indexed: 12/14/2022]
Abstract
The kynurenine pathway generates multiple tryptophan metabolites called collectively kynurenines and leads to formation of the enzyme cofactor nicotinamide adenine dinucleotide. The first step in this pathway is tryptophan degradation, initiated by the rate-limiting enzymes indoleamine 2,3-dioxygenase, or tryptophan 2,3-dioxygenase, depending on the tissue. The balanced kynurenine metabolism, which has been a subject of multiple studies in last decades, plays an important role in several physiological and pathological conditions such as infections, autoimmunity, neurological disorders, cancer, cataracts, as well as pregnancy. Understanding the regulation of tryptophan depletion provide novel diagnostic and treatment opportunities, however it requires reliable methods for quantification of kynurenines in biological samples with complex composition (body fluids, tissues, or cells). Trace concentrations, interference of sample components, and instability of some tryptophan metabolites need to be addressed using analytical methods. The novel separation approaches and optimized extraction protocols help to overcome difficulties in analyzing kynurenines within the complex tissue material. Recent developments in chromatography coupled with mass spectrometry provide new opportunity for quantification of tryptophan and its degradation products in various biological samples. In this review, we present current accomplishments in the chromatographic methodologies proposed for detection of tryptophan metabolites and provide a guide for choosing the optimal approach.
Collapse
Affiliation(s)
- Ilona Sadok
- Laboratory of Separation and Spectroscopic Method Applications, Centre for Interdisciplinary ResearchThe John Paul II Catholic University of LublinLublinPoland
| | - Andrzej Gamian
- Laboratory of Medical MicrobiologyHirszfeld Institute of Immunology and Experimental TherapyPolish Academy of SciencesWroclawPoland
- Department of Medical BiochemistryWroclaw Medical UniversityWroclawPoland
| | - Magdalena Maria Staniszewska
- Laboratory of Separation and Spectroscopic Method Applications, Centre for Interdisciplinary ResearchThe John Paul II Catholic University of LublinLublinPoland
- Laboratory of Medical MicrobiologyHirszfeld Institute of Immunology and Experimental TherapyPolish Academy of SciencesWroclawPoland
| |
Collapse
|
45
|
Bienvenu JF, Provencher G, Bélanger P, Bérubé R, Dumas P, Gagné S, Gaudreau É, Fleury N. Standardized Procedure for the Simultaneous Determination of the Matrix Effect, Recovery, Process Efficiency, and Internal Standard Association. Anal Chem 2017; 89:7560-7568. [DOI: 10.1021/acs.analchem.7b01383] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jean-François Bienvenu
- Centre de toxicologie du
Québec (CTQ), Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, Québec, Canada G1 V 5B3
| | - Gilles Provencher
- Centre de toxicologie du
Québec (CTQ), Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, Québec, Canada G1 V 5B3
| | - Patrick Bélanger
- Centre de toxicologie du
Québec (CTQ), Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, Québec, Canada G1 V 5B3
| | - René Bérubé
- Centre de toxicologie du
Québec (CTQ), Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, Québec, Canada G1 V 5B3
| | - Pierre Dumas
- Centre de toxicologie du
Québec (CTQ), Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, Québec, Canada G1 V 5B3
| | - Sébastien Gagné
- Centre de toxicologie du
Québec (CTQ), Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, Québec, Canada G1 V 5B3
| | - Éric Gaudreau
- Centre de toxicologie du
Québec (CTQ), Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, Québec, Canada G1 V 5B3
| | - Normand Fleury
- Centre de toxicologie du
Québec (CTQ), Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, Québec, Canada G1 V 5B3
| |
Collapse
|
46
|
Backlund PS, Urbanski HF, Doll MA, Hein DW, Bozinoski M, Mason CE, Coon SL, Klein DC. Daily Rhythm in Plasma N-acetyltryptamine. J Biol Rhythms 2017; 32:195-211. [PMID: 28466676 PMCID: PMC5571864 DOI: 10.1177/0748730417700458] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Normal physiology undergoes 24-h changes in function that include daily rhythms in circulating hormones, most notably melatonin and cortical steroids. This study focused on N-acetyltryptamine, a little-studied melatonin receptor mixed agonist-antagonist and the likely evolutionary precursor of melatonin. The central issue addressed was whether N-acetyltryptamine is physiologically present in the circulation. N-acetyltryptamine was detected by LC-MS/MS in daytime plasma of 3 different mammals in subnanomolar levels (mean ± SEM: rat, 0.29 ± 0.05 nM, n = 5; rhesus macaque, 0.54 ± 0.24 nM, n = 4; human, 0.03 ± 0.01 nM, n = 32). Analysis of 24-h blood collections from rhesus macaques revealed a nocturnal increase in plasma N-acetyltryptamine (p < 0.001), which varied from 2- to 15-fold over daytime levels among the 4 animals studied. Related RNA sequencing studies indicated that the transcript encoding the tryptamine acetylating enzyme arylalkylamine N-acetyltransferase (AANAT) is expressed at similar levels in the rhesus pineal gland and retina, thereby indicating that either tissue could contribute to circulating N-acetyltryptamine. The evidence that N-acetyltryptamine is a physiological component of mammalian blood and exhibits a daily rhythm, together with known effects as a melatonin receptor mixed agonist-antagonist, shifts the status of N-acetyltryptamine from pharmacological tool to candidate for a physiological role. This provides a new opportunity to extend our understanding of 24-h biology.
Collapse
Affiliation(s)
- Peter S. Backlund
- Biomedical Mass Spectrometry Facility, Intramural Research Program,
Eunice Kennedy Shriver National Institute of Child Health and
Human Development, National Institutes of Health, Bethesda, MD 20892-1580
| | - Henryk F. Urbanski
- Division of Neuroscience, Oregon National Primate Research Center,
Beaverton, OR 97006
- Division of Reproductive and Developmental Sciences, Oregon National
Primate Research Center, Beaverton, OR 97006
- Department of Behavioral Neuroscience, Oregon Health and Science
University, Portland, OR 97006
- Department of Physiology and Pharmacology, Oregon Health and Science
University, Portland, OR 97239
| | - Mark A. Doll
- Department of Pharmacology and Toxicology, and James Graham Brown
Cancer Center, University of Louisville, Louisville, KY 40202
| | - David W. Hein
- Department of Pharmacology and Toxicology, and James Graham Brown
Cancer Center, University of Louisville, Louisville, KY 40202
| | - Marjan Bozinoski
- Department of Physiology and Biophysics, Weill Cornell Medical
College, Cornell University, New York, NY 10065
| | - Christopher E. Mason
- Department of Physiology and Biophysics, Weill Cornell Medical
College, Cornell University, New York, NY 10065
- The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for
Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA
- The Feil Family Brain and Mind Research Institute, Weill Cornell
Medicine, New York, NY, USA
| | - Steven L. Coon
- Section on Neuroendocrinology, Program in Developmental
Endocrinology and Genetics, Eunice Kennedy Shriver National
Institute of Child Health and Human Development, National Institutes of Health,
Bethesda, MD 20892-1830
- Molecular Genomics Core Facility, Office of the Scientific
Director, Eunice Kennedy Shriver National Institute of Child Health
and Human Development, National Institutes of Health, Bethesda, MD 20892-1830
| | - David C. Klein
- Section on Neuroendocrinology, Program in Developmental
Endocrinology and Genetics, Eunice Kennedy Shriver National
Institute of Child Health and Human Development, National Institutes of Health,
Bethesda, MD 20892-1830
- Office of the Scientific Director, Intramural Research Program,
Eunice Kennedy Shriver National Institute of Child Health and
Human Development, National Institutes of Health, Bethesda, MD 20892-1830
| |
Collapse
|
47
|
Simultaneous determination of tryptophan and 8 metabolites in human plasma by liquid chromatography/tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1054:36-43. [DOI: 10.1016/j.jchromb.2017.04.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/28/2017] [Accepted: 04/02/2017] [Indexed: 01/20/2023]
|
48
|
Valentin N, Camilleri M, Carlson P, Harrington SC, Eckert D, O'Neill J, Burton D, Chen J, Shaw AL, Acosta A. Potential mechanisms of effects of serum-derived bovine immunoglobulin/protein isolate therapy in patients with diarrhea-predominant irritable bowel syndrome. Physiol Rep 2017; 5:e13170. [PMID: 28275113 PMCID: PMC5350178 DOI: 10.14814/phy2.13170] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 01/24/2017] [Accepted: 01/27/2017] [Indexed: 12/13/2022] Open
Abstract
Serum-derived bovine immunoglobulin/protein isolate (SBI), an oral nutritional therapy, is efficacious in diverse diarrheal diseases. In an open-label study in 15 patients with irritable bowel syndrome-diarrhea (IBS-D), we evaluated effects of SBI (5.0 g, twice a day) for 8 weeks on safety, on bowel function and abdominal pain, tryptophan metabolism (K:T ratio), intestinal permeability (13C-mannitol and lactulose excretion), bile acid synthesis (fasting serum FGF-19 and C4), duodenal and stool microbiome, and the expression of 90 genes related to inflammation, immune function, and tight junctions in duodenal mucosa. Statistical analysis (paired tests, baseline vs. treatment) was based on intention to treat (ITT) principles. One of 15 Caucasian patients (13F, 2M, age 40.3 ± 2.3y, BMI 34.3 ± 3.0 kg/m2) withdrew without completing studies. There were improvements in stools/day (decrease, P < 0.001), ease of passage (P = 0.035), and evacuation (P = 0.004) with SBI therapy. Worst pain severity was numerically reduced in last 2 weeks' treatment (P = 0.078). Duodenal mucosal mRNA expression; serum C4, FGF-19, and KT ratio; small bowel or colon permeability; and stool microbiome were not significantly different after SBI therapy, compared to baseline. In duodenal brushings, there was considerable microbiota structure difference (β diversity analysis P = 0.072, UniFrac) and, on taxonomic analysis, increased abundance of Proteobacteria Burkholderiales, Firmicutes Catonella, and unclassified genus organisms with SBI therapy. Thus, SBI therapy for 8 weeks in IBS-D patients is associated with improved bowel function; the mechanism of benefit is unclear, though there were microbiota structure differences in duodenal brushings. Further studies in patients with low-grade inflammation and intestinal barrier dysfunction at baseline are indicated.
Collapse
Affiliation(s)
- Nelson Valentin
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Mayo Clinic, Rochester, Minnesota
| | - Michael Camilleri
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Mayo Clinic, Rochester, Minnesota
| | - Paula Carlson
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Mayo Clinic, Rochester, Minnesota
| | - Sean C Harrington
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Mayo Clinic, Rochester, Minnesota
| | - Deborah Eckert
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Mayo Clinic, Rochester, Minnesota
| | - Jessica O'Neill
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Mayo Clinic, Rochester, Minnesota
| | - Duane Burton
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Mayo Clinic, Rochester, Minnesota
| | - Jun Chen
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Mayo Clinic, Rochester, Minnesota
| | | | - Andres Acosta
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
49
|
Paquin-Proulx D, Ching C, Vujkovic-Cvijin I, Fadrosh D, Loh L, Huang Y, Somsouk M, Lynch SV, Hunt PW, Nixon DF, SenGupta D. Bacteroides are associated with GALT iNKT cell function and reduction of microbial translocation in HIV-1 infection. Mucosal Immunol 2017; 10:69-78. [PMID: 27049061 PMCID: PMC5053825 DOI: 10.1038/mi.2016.34] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 03/07/2016] [Indexed: 02/04/2023]
Abstract
Invariant natural killer T (iNKT) cells are innate-like T cells that respond to lipid antigens presented by CD1d. These immunoregulatory cells have the capacity for rapid cytokine release after antigen recognition and are essential for the activation of multiple arms of the immune response. HIV-1 infection is associated with iNKT cell depletion in the peripheral blood; however, their role in the gastrointestinal-associated lymphoid tissue (GALT) is less well studied. Our results show that iNKT cells are found at a higher frequency in GALT compared with blood, particularly in HIV-1 elite controllers. The capacity of iNKT cells to produce interleukin-4 (IL-4) and IL-10 in the GALT was associated with less immune activation and lower markers of microbial translocation, whereas regulatory T cell frequency showed positive associations with immune activation. We hypothesized that the composition of the microbiota would influence iNKT cell frequency and function. We found positive associations between the abundance of several Bacteroides species and iNKT cell frequency and their capacity to produce IL-4 in the GALT but not in the blood. Overall, our results are consistent with the hypothesis that GALT iNKT cells, influenced by certain bacterial species, may have a key role in regulating immune activation in HIV-1 infection.
Collapse
Affiliation(s)
- Dominic Paquin-Proulx
- Department of Microbiology, Immunology & Tropical Medicine,
The George Washington University, Washington, USA
| | - Christopher Ching
- Division of Experimental Medicine, Department of Medicine,
University of California, San Francisco, San Francisco, California, USA
| | - Ivan Vujkovic-Cvijin
- Division of Experimental Medicine, Department of Medicine,
University of California, San Francisco, San Francisco, California, USA
| | - Douglas Fadrosh
- Division of Gastroenterology, Department of Medicine, University of
California, San Francisco, San Francisco, California, USA
| | - Liyen Loh
- Division of Experimental Medicine, Department of Medicine,
University of California, San Francisco, San Francisco, California, USA
| | - Yong Huang
- Department of Bioengineering and Therapeutic Sciences, School of
Pharmacy University of California, San Francisco, California, USA
| | - Ma Somsouk
- Division of Gastroenterology, Department of Medicine, University of
California, San Francisco, San Francisco, California, USA
| | - Susan V. Lynch
- Division of Gastroenterology, Department of Medicine, University of
California, San Francisco, San Francisco, California, USA
| | - Peter W. Hunt
- HIV/AIDS Division, Department of Medicine, San Francisco General
Hospital, University of California, San Francisco, San Francisco, California,
USA
| | - Douglas F. Nixon
- Department of Microbiology, Immunology & Tropical Medicine,
The George Washington University, Washington, USA
| | - Devi SenGupta
- Division of Experimental Medicine, Department of Medicine,
University of California, San Francisco, San Francisco, California, USA
| |
Collapse
|
50
|
Avelino-Silva VI, Miyaji KT, Hunt PW, Huang Y, Simoes M, Lima SB, Freire MS, Caiaffa-Filho HH, Hong MA, Costa DA, Dias JZC, Cerqueira NB, Nishiya AS, Sabino EC, Sartori AM, Kallas EG. CD4/CD8 Ratio and KT Ratio Predict Yellow Fever Vaccine Immunogenicity in HIV-Infected Patients. PLoS Negl Trop Dis 2016; 10:e0005219. [PMID: 27941965 PMCID: PMC5179051 DOI: 10.1371/journal.pntd.0005219] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 12/22/2016] [Accepted: 11/30/2016] [Indexed: 11/30/2022] Open
Abstract
Background HIV-infected individuals have deficient responses to Yellow Fever vaccine (YFV) and may be at higher risk for adverse events (AE). Chronic immune activation–characterized by low CD4/CD8 ratio or high indoleamine 2,3-dioxygenase-1 (IDO) activity—may influence vaccine response in this population. Methods We prospectively assessed AE, viremia by the YFV virus and YF-specific neutralizing antibodies (NAb) in HIV-infected (CD4>350) and -uninfected adults through 1 year after vaccination. The effect of HIV status on initial antibody response to YFV was measured during the first 3 months following vaccination, while the effect on persistence of antibody response was measured one year following vaccination. We explored CD4/CD8 ratio, IDO activity (plasma kynurenine/tryptophan [KT] ratio) and viremia by Human Pegivirus as potential predictors of NAb response to YFV among HIV-infected participants with linear mixed models. Results 12 HIV-infected and 45-uninfected participants were included in the final analysis. HIV was not significantly associated with AE, YFV viremia or NAb titers through the first 3 months following vaccination. However, HIV–infected participants had 0.32 times the NAb titers observed for HIV-uninfected participants at 1 year following YFV (95% CI 0.13 to 0.83, p = 0.021), independent of sex, age and prior vaccination. In HIV-infected participants, each 10% increase in CD4/CD8 ratio predicted a mean 21% higher post-baseline YFV Nab titer (p = 0.024). Similarly, each 10% increase in KT ratio predicted a mean 21% lower post-baseline YFV Nab titer (p = 0.009). Viremia by Human Pegivirus was not significantly associated with NAb titers. Conclusions HIV infection appears to decrease the durability of NAb responses to YFV, an effect that may be predicted by lower CD4/CD8 ratio or higher KT ratio. Yellow Fever (YF) vaccine is considered one of the most effective vaccines ever produced. However, previous studies suggest that HIV impairs YF vaccine response. In this study, we assessed if HIV infection impacts the risk of adverse events and could reduce antibody response to YF vaccine. We explored if laboratory markers of persistent inflammation, frequently present among HIV-infected patients, could predict antibody response to YF vaccine in this population. We found that HIV had no significant effect on adverse events or levels of antibodies through 3 months after vaccination, but this may be limited by the small sample size of 12 HIV-infected and 45-uninfected participants in the study. However, we were able to show that, compared to HIV-uninfected participants, HIV–infected patients had lower antibody titers 1 year following YF vaccine even after statistical adjustment for the potential effects of sex, age and prior vaccination. Persistent inflammation seems to reduce YF vaccine antibody response in HIV-infected participants. In conclusion, HIV-infected individuals have impaired antibody response to YFV due to a poorer persistence of antibodies, despite a seemingly normal initial response. HIV-infected patients at permanent or recurring risk of YF infection may benefit from a booster dose of YF vaccine.
Collapse
Affiliation(s)
- Vivian I. Avelino-Silva
- Department of Infectious and Parasitic Diseases, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
- Department of Medicine, University of California San Francisco, San Francisco, CA, United States of America
- * E-mail:
| | - Karina T. Miyaji
- Department of Infectious and Parasitic Diseases, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Peter W. Hunt
- Department of Medicine, University of California San Francisco, San Francisco, CA, United States of America
| | - Yong Huang
- Department of Bioengineering and Therapeutic Sciences, School of Pharmacy, University of California, San Francisco, San Francisco, California, United States of America
| | | | | | | | - Helio H. Caiaffa-Filho
- Instituto Adolfo Lutz, São Paulo, Brazil
- Laboratory of Medical Investigation LIM-3, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Marisa A. Hong
- Instituto Adolfo Lutz, São Paulo, Brazil
- Division of Clinical Immunology and Allergy, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Dayane Alves Costa
- Division of Clinical Immunology and Allergy, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Juliana Zanatta C. Dias
- Division of Clinical Immunology and Allergy, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Natalia B. Cerqueira
- Division of Clinical Immunology and Allergy, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | | | - Ester Cerdeira Sabino
- Department of Infectious and Parasitic Diseases, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
- Fundação Pro-Sangue Hemocentro de Sao Paulo, Sao Paulo, Brazil
| | - Ana M. Sartori
- Department of Infectious and Parasitic Diseases, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Esper G. Kallas
- Department of Infectious and Parasitic Diseases, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
- Division of Clinical Immunology and Allergy, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| |
Collapse
|