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Hennebelle A, Ismail L, Materwala H, Al Kaabi J, Ranjan P, Janardhanan R. Secure and privacy-preserving automated machine learning operations into end-to-end integrated IoT-edge-artificial intelligence-blockchain monitoring system for diabetes mellitus prediction. Comput Struct Biotechnol J 2024; 23:212-233. [PMID: 38169966 PMCID: PMC10758733 DOI: 10.1016/j.csbj.2023.11.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/20/2023] [Accepted: 11/20/2023] [Indexed: 01/05/2024] Open
Abstract
Diabetes Mellitus, one of the leading causes of death worldwide, has no cure to date and can lead to severe health complications, such as retinopathy, limb amputation, cardiovascular diseases, and neuronal disease, if left untreated. Consequently, it becomes crucial to be able to monitor and predict the incidence of diabetes. Machine learning approaches have been proposed and evaluated in the literature for diabetes prediction. This paper proposes an IoT-edge-Artificial Intelligence (AI)-blockchain system for diabetes prediction based on risk factors. The proposed system is underpinned by blockchain to obtain a cohesive view of the risk factors data from patients across different hospitals and ensure security and privacy of the user's data. We provide a comparative analysis of different medical sensors, devices, and methods to measure and collect the risk factors values in the system. Numerical experiments and comparative analysis were carried out within our proposed system, using the most accurate random forest (RF) model, and the two most used state-of-the-art machine learning approaches, Logistic Regression (LR) and Support Vector Machine (SVM), using three real-life diabetes datasets. The results show that the proposed system predicts diabetes using RF with 4.57% more accuracy on average in comparison with the other models LR and SVM, with 2.87 times more execution time. Data balancing without feature selection does not show significant improvement. When using feature selection, the performance is improved by 1.14% for PIMA Indian and 0.02% for Sylhet datasets, while it is reduced by 0.89% for MIMIC III.
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Affiliation(s)
- Alain Hennebelle
- School of Computing and Information Systems, The University of Melbourne, Australia
| | - Leila Ismail
- School of Computing and Information Systems, The University of Melbourne, Australia
- Intelligent Distributed Computing and Systems Lab, Department of Computer Science and Software Engineering, College of Information Technology, United Arab Emirates University, United Arab Emirates
- National Water and Energy Center, United Arab Emirates University, United Arab Emirates
| | - Huned Materwala
- Intelligent Distributed Computing and Systems Lab, Department of Computer Science and Software Engineering, College of Information Technology, United Arab Emirates University, United Arab Emirates
- National Water and Energy Center, United Arab Emirates University, United Arab Emirates
| | - Juma Al Kaabi
- College of Medicine and Health Sciences, Department of Internal Medicine, United Arab Emirates University, United Arab Emirates
- Tawam and Mediclinic Hospitals, Al Ain, Abu Dhabi, United Arab Emirates
| | - Priya Ranjan
- School of Computer Science, Internet of Things Center of Excellence, University of Petroleum and Energy Studies, India
| | - Rajiv Janardhanan
- Faculty of Medical & Health Sciences, SRM Institute of Science & Technology, India
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2
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van der Pol KH, Koenderink J, van den Heuvel JJMW, van den Broek P, Peters J, van Bunningen IDW, Pertijs J, Russel FGM, Koldenhof J, Morshuis WJ, van Drongelen J, Schirris TJJ, van der Meer A, Rongen GA. Effects of allopurinol and febuxostat on uric acid transport and transporter expression in human umbilical vein endothelial cells. PLoS One 2024; 19:e0305906. [PMID: 38905201 PMCID: PMC11192402 DOI: 10.1371/journal.pone.0305906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 06/06/2024] [Indexed: 06/23/2024] Open
Abstract
Uric acid induces radical oxygen species formation, endothelial inflammation, and endothelial dysfunction which contributes to the progression of atherosclerosis. Febuxostat inhibits BCRP- and allopurinol stimulates MRP4-mediated uric acid efflux in human embryonic kidney cells. We hypothesized that endothelial cells express uric acid transporters that regulate intracellular uric acid concentration and that modulation of these transporters by febuxostat and allopurinol contributes to their different impact on cardiovascular mortality. The aim of this study was to explore a potential difference between the effect of febuxostat and allopurinol on uric acid uptake by human umbilical vein endothelial cells. Febuxostat increased intracellular uric acid concentrations compared with control. In contrast, allopurinol did not affect intracellular uric acid concentration. In line with this observation, febuxostat increased mRNA expression of GLUT9 and reduced MRP4 expression, while allopurinol did not affect mRNA expression of these uric acid transporters. These findings provide a possible pathophysiological pathway which could explain the higher cardiovascular mortality for febuxostat compared to allopurinol but should be explored further.
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Affiliation(s)
- Karel H. van der Pol
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jan Koenderink
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Petra van den Broek
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Janny Peters
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Imke D. W. van Bunningen
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jeanne Pertijs
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Frans G. M. Russel
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jim Koldenhof
- Applied Stem Cell Technologies, University of Twente, Enschede, The Netherlands
| | - Wim J. Morshuis
- Department of Cardio-thoracic Surgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Joris van Drongelen
- Department of Obstetrics and Gynaecology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Tom J. J. Schirris
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Gerard A. Rongen
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
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Jaquez-Durán G, Arellano-Ortiz AL. Western diet components that increase intestinal permeability with implications on health. INT J VITAM NUTR RES 2024; 94:405-421. [PMID: 38009780 DOI: 10.1024/0300-9831/a000801] [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] [Indexed: 11/29/2023]
Abstract
Intestinal permeability is a physiological property that allows necessary molecules to enter the organism. This property is regulated by tight junction proteins located between intestinal epithelial cells. However, various factors can increase intestinal permeability (IIP), including diet. Specific components in the Western diet (WD), such as monosaccharides, fat, gluten, salt, alcohol, and additives, can affect the tight junctions between enterocytes, leading to increased permeability. This review explains how these components promote IIP and outlines their potential implications for health. In addition, we describe how a reduction in WD consumption may help improve dietary treatment of diseases associated with IIP. Research has shown that some of these components can cause changes in the gut microbiota, leading to dysbiosis, which can promote greater intestinal permeability and displacement of endotoxins into the bloodstream. These endotoxins include lipopolysaccharides derived from gram-negative bacteria, and their presence has been associated with various diseases, such as autoimmune, neurological, and metabolic diseases like diabetes and cardiovascular disease. Therefore, nutrition professionals should promote the reduction of WD consumption and consider the inclusion of healthy diet components as part of the nutritional treatment for diseases associated with increased intestinal permeability.
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Affiliation(s)
- Gilberto Jaquez-Durán
- Departamento de Ciencias de la Salud, División Multidisciplinaria de Ciudad Universitaria, Universidad Autónoma de Ciudad Juárez, México
| | - Ana Lidia Arellano-Ortiz
- Departamento de Ciencias de la Salud, División Multidisciplinaria de Ciudad Universitaria, Universidad Autónoma de Ciudad Juárez, México
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Krishna H, Krishnegowda A, Anantharaman S, Ashwinee KS, Vijayalakshmi AE. A simple uric acid assay by using 3‐hydroxytyramine as a chromogenic colorimetric sensor in human serum samples: Density functional theory supported mechanistic approach. J CHIN CHEM SOC-TAIP 2023. [DOI: 10.1002/jccs.202200513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Honnur Krishna
- Department of Chemistry S. D. V. S. Sangh's S. S. Arts College and T. P. Science Institute Belagavi India
| | | | | | | | - A Edalli Vijayalakshmi
- Department of Chemistry S. D. V. S. Sangh's S. S. Arts College and T. P. Science Institute Belagavi India
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Rahn C, Bakuradze T, Stegmüller S, Galan J, Niesen S, Winterhalter P, Richling E. Polyphenol-Rich Beverage Consumption Affecting Parameters of the Lipid Metabolism in Healthy Subjects. Int J Mol Sci 2023; 24:ijms24010841. [PMID: 36614281 PMCID: PMC9821765 DOI: 10.3390/ijms24010841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/21/2022] [Accepted: 12/21/2022] [Indexed: 01/05/2023] Open
Abstract
Polyphenols are a diverse and widely distributed class of secondary metabolites, which possess numerous beneficial properties including a modulation of glucose and lipid metabolism. This placebo-controlled human intervention study was performed to explore effects of polyphenol-rich beverage (PRB) uptake on lipid metabolism, as well as DNA integrity. In this case, 36 healthy men were randomly divided to consume either 750 mL of a PRB (containing 51% chokeberry, cranberry, and pomegranate) or a placebo drink daily for eight weeks. Only PRB consumption was found to decrease fat and protein intakes significantly compared to the preceding one-week washout period. During the intervention with PRB an increased fat-free mass was shown after four weeks, whereas a significant elevation in body weight and leptin was observed in placebo group. Blood lipids were not significantly altered after PRB consumption, while triglyceride levels increased after placebo drink intake. In platelets, a significant inhibition of phosphodiesterase (PDE) activity was observed, more pronounced in test group. Consuming the PRB decreased total DNA strand breaks in whole blood as well as H2O2-induced breaks in isolated lymphocytes. Overall, our study suggested beneficial effects on lipid metabolism by reduced energy intake, modulation of biomarkers such as PDE activity and improved DNA integrity associated with PRB consumption.
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Affiliation(s)
- Celina Rahn
- Division of Food Chemistry and Toxicology, Department of Chemistry, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, Erwin-Schrödinger-Straße 52, D-67663 Kaiserslautern, Germany
| | - Tamara Bakuradze
- Division of Food Chemistry and Toxicology, Department of Chemistry, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, Erwin-Schrödinger-Straße 52, D-67663 Kaiserslautern, Germany
| | - Simone Stegmüller
- Division of Food Chemistry and Toxicology, Department of Chemistry, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, Erwin-Schrödinger-Straße 52, D-67663 Kaiserslautern, Germany
| | - Jens Galan
- Medical Institute, Hochgewanne 19, D-67269 Grünstadt, Germany
| | - Sonja Niesen
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstraße 20, D-38106 Braunschweig, Germany
| | - Peter Winterhalter
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstraße 20, D-38106 Braunschweig, Germany
| | - Elke Richling
- Division of Food Chemistry and Toxicology, Department of Chemistry, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, Erwin-Schrödinger-Straße 52, D-67663 Kaiserslautern, Germany
- Correspondence: ; Tel.: +49-631-205-4061
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Rodríguez-Rovira I, Arce C, De Rycke K, Pérez B, Carretero A, Arbonés M, Teixidò-Turà G, Gómez-Cabrera MC, Campuzano V, Jiménez-Altayó F, Egea G. Allopurinol blocks aortic aneurysm in a mouse model of Marfan syndrome via reducing aortic oxidative stress. Free Radic Biol Med 2022; 193:538-550. [PMID: 36347404 DOI: 10.1016/j.freeradbiomed.2022.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/28/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Increasing evidence indicates that redox stress participates in MFS aortopathy, though its mechanistic contribution is little known. We reported elevated reactive oxygen species (ROS) formation and NADPH oxidase NOX4 upregulation in MFS patients and mouse aortae. Here we address the contribution of xanthine oxidoreductase (XOR), which catabolizes purines into uric acid and ROS in MFS aortopathy. METHODS AND RESULTS In aortic samples from MFS patients, XOR protein expression, revealed by immunohistochemistry, increased in both the tunicae intima and media of the dilated zone. In MFS mice (Fbn1C1041G/+), aortic XOR mRNA transcripts and enzymatic activity of the oxidase form (XO) were augmented in the aorta of 3-month-old mice but not in older animals. The administration of the XOR inhibitor allopurinol (ALO) halted the progression of aortic root aneurysm in MFS mice. ALO administrated before the onset of the aneurysm prevented its subsequent development. ALO also inhibited MFS-associated endothelial dysfunction as well as elastic fiber fragmentation, nuclear translocation of pNRF2 and increased 3'-nitrotyrosine levels, and collagen maturation remodeling, all occurring in the tunica media. ALO reduced the MFS-associated large aortic production of H2O2, and NOX4 and MMP2 transcriptional overexpression. CONCLUSIONS Allopurinol interferes in aortic aneurysm progression acting as a potent antioxidant. This study strengthens the concept that redox stress is an important determinant of aortic aneurysm formation and progression in MFS and warrants the evaluation of ALO therapy in MFS patients.
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Affiliation(s)
- Isaac Rodríguez-Rovira
- Department of Biomedical Sciences, University of Barcelona School of Medicine and Health Sciences, 08036, Barcelona, Spain
| | - Cristina Arce
- Department of Biomedical Sciences, University of Barcelona School of Medicine and Health Sciences, 08036, Barcelona, Spain
| | - Karo De Rycke
- Department of Biomedical Sciences, University of Barcelona School of Medicine and Health Sciences, 08036, Barcelona, Spain
| | - Belén Pérez
- Department of Pharmacology, Toxicology and Therapeutics, Neuroscience Institute, School of Medicine, Autonomous University of Barcelona, 08193, Cerdanyola del Vallès, Spain
| | - Aitor Carretero
- Department of Physiology, Faculty of Medicine, University of Valencia, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, Valencia, Spain
| | - Marc Arbonés
- Department of Biomedical Sciences, University of Barcelona School of Medicine and Health Sciences, 08036, Barcelona, Spain
| | - Gisela Teixidò-Turà
- Department of Cardiology, Hospital Universitari Vall d'Hebron, Barcelona, Spain; CIBER-CV, Vall d'Hebrón Institut de Recerca (VHIR), Barcelona, Spain
| | - Mari Carmen Gómez-Cabrera
- Department of Physiology, Faculty of Medicine, University of Valencia, CIBERFES, Fundación Investigación Hospital Clínico Universitario/INCLIVA, Valencia, Spain
| | - Victoria Campuzano
- Department of Biomedical Sciences, University of Barcelona School of Medicine and Health Sciences, 08036, Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), ISCIII, Spain
| | - Francesc Jiménez-Altayó
- Department of Pharmacology, Toxicology and Therapeutics, Neuroscience Institute, School of Medicine, Autonomous University of Barcelona, 08193, Cerdanyola del Vallès, Spain
| | - Gustavo Egea
- Department of Biomedical Sciences, University of Barcelona School of Medicine and Health Sciences, 08036, Barcelona, Spain.
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7
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Zhu J, Li Y, Chen Z, Gao K, Lin G, Chen S, Li L, Ge H. Screening of lactic acid bacteria strains with urate-lowering effect from fermented dairy products. J Food Sci 2022; 87:5118-5127. [PMID: 36250495 DOI: 10.1111/1750-3841.16351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 09/01/2022] [Accepted: 09/21/2022] [Indexed: 11/26/2022]
Abstract
Hyperuricemia is a well-known cause of gout and also a risk factor for various comorbidities. Current agents like xanthine oxidase inhibitors prevent hyperuricemia, but usually induce severe side effects. Alternative strategies, such as novel dietary supplementations, are necessary for the management of hyperuricemia. Lactic acid bacteria (LAB) have been used in human diet for a long time with a good safety record. In this study, 345 LAB strains isolated from traditional fermented dairy products were tested for assimilating abilities of guanosine. Two LAB strains, Lacticaseibacillus rhamnosus 1155 (LR1155) and Limosilactobacillus fermentum 2644 (LF2644), showing great capacities of guanosine transformation and degradation were selected. Compared to LR1155, LF2644 showed a better effect with 100.00% transforming rate and 55.10% degrading rate. In an in vivo test, a hyperuricemic rat model was established and the results showed that administration of LR1155 (p < 0.01) or LF2644 (p < 0.01) prevented the rise of serum uric acid with more than 20% decrease when compared with the hyperuricemia rats. In addition, an increased fecal uric acid level was observed in LF2644 or LR1155 treated rats (LR1155-M p < 0.05, others p < 0.01). This study proved that LR1155 and LF2644 can be promising candidates of dietary supplements for prevention or improvement of hyperuricemia. PRACTICAL APPLICATION: The LAB strains tested in this study could be considered as good potential probiotic candidates for dietary supplements because of their urate-lowering effects, which provide a novel antihyperuricemic strategy with advantages of safety and sustainability.
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Affiliation(s)
- Jun Zhu
- Research and Development Department, Hangzhou Wahaha Group Co., Ltd., Hangzhou, P.R. China.,Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, P.R. China
| | - Yanjun Li
- Research and Development Department, Hangzhou Wahaha Group Co., Ltd., Hangzhou, P.R. China.,Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, P.R. China.,College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, P.R. China
| | - Zuoguo Chen
- Research and Development Department, Hangzhou Wahaha Group Co., Ltd., Hangzhou, P.R. China.,Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, P.R. China
| | - Kan Gao
- Research and Development Department, Hangzhou Wahaha Group Co., Ltd., Hangzhou, P.R. China.,Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, P.R. China
| | - Guodong Lin
- Research and Development Department, Hangzhou Wahaha Group Co., Ltd., Hangzhou, P.R. China.,Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, P.R. China
| | - Su Chen
- Research and Development Department, Hangzhou Wahaha Group Co., Ltd., Hangzhou, P.R. China.,Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, P.R. China
| | - Li Li
- Research and Development Department, Hangzhou Wahaha Group Co., Ltd., Hangzhou, P.R. China.,Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, P.R. China
| | - Hongjuan Ge
- Research and Development Department, Hangzhou Wahaha Group Co., Ltd., Hangzhou, P.R. China.,Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, P.R. China
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8
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Li Y, Zhu J, Lin G, Gao K, Yu Y, Chen S, Chen L, Chen Z, Li L. Probiotic effects of Lacticaseibacillus rhamnosus 1155 and Limosilactobacillus fermentum 2644 on hyperuricemic rats. Front Nutr 2022; 9:993951. [PMID: 36245501 PMCID: PMC9562091 DOI: 10.3389/fnut.2022.993951] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/06/2022] [Indexed: 11/26/2022] Open
Abstract
Hyperuricemia is the main cause of gout and involved in the occurrence of multiple diseases, such as hypertension, metabolic disorders and chronic kidney disease. Emerging evidence suggests that lactic acid bacteria (LAB) have shown the beneficial effects on the prevention or treatment of hyperuricemia. In this study, the urate-lowering effect of two LAB strains, Lacticaseibacillus rhamnosus 1155 (LR1155) and Limosilactobacillus fermentum 2644 (LF2644) on hyperuricemic rats were investigated. A hyperuricemic rat model was induced by the intragastric treatment of potassium oxonate, combined with a high purine diet. The oral administration of LR1155, LF2644, or a combination of LR1155 and LF2644 for 4 weeks significantly prevented the rise of the serum uric acid (UA) induced by hyperuricemia. LR1155 and LF2644 significantly elevated the fecal UA levels, increased the UA content and up-regulated gene expression of UA transporter, ATP-binding cassette subfamily G-2 (ABCG2), in colon and jejunum tissues, suggesting the accelerated UA excretion from the intestine. Besides, LR1155 significantly inhibited the activity of xanthine oxidase (XOD) in liver and serum, benefited the reduce of UA production. In addition, LF2644 strengthened the gut barrier functions through an up-regulation of the gene expressions for occluding and mucin2, accompanied with the reduced inflammatory indicators of lipopolysaccharide (LPS) and interleukin-1β (IL-1β) in hyperuricemic rat. Moreover, using 16s rDNA high-throughput sequencing of feces, LR1155 was shown to improve the hyperuricemia induced gut microbial dysbiosis. The genera Roseburia, Butyricicoccus, Prevotella, Oscillibacter, and Bifidobacterium may associate with the effect of LR1155 on microbiota in hyperuricemic rats. Collectively, the results indicated that LR1155 and LF2644 exhibit urate-lowering effects and could be used alone or in combination as a new adjuvant treatment for hyperuricemia.
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Affiliation(s)
- Yanjun Li
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- Department of Research and Development, Hangzhou Wahaha Group Co., Ltd., Hangzhou, China
- Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, China
| | - Jun Zhu
- Department of Research and Development, Hangzhou Wahaha Group Co., Ltd., Hangzhou, China
- Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, China
- *Correspondence: Jun Zhu,
| | - Guodong Lin
- Department of Research and Development, Hangzhou Wahaha Group Co., Ltd., Hangzhou, China
- Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, China
| | - Kan Gao
- Department of Research and Development, Hangzhou Wahaha Group Co., Ltd., Hangzhou, China
- Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, China
| | - Yunxia Yu
- Department of Research and Development, Hangzhou Wahaha Group Co., Ltd., Hangzhou, China
- Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, China
| | - Su Chen
- Department of Research and Development, Hangzhou Wahaha Group Co., Ltd., Hangzhou, China
- Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, China
| | - Lie Chen
- Department of Research and Development, Hangzhou Wahaha Group Co., Ltd., Hangzhou, China
- Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, China
| | - Zuoguo Chen
- Department of Research and Development, Hangzhou Wahaha Group Co., Ltd., Hangzhou, China
- Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, China
| | - Li Li
- Department of Research and Development, Hangzhou Wahaha Group Co., Ltd., Hangzhou, China
- Key Laboratory of Food and Biological Engineering of Zhejiang Province, Hangzhou, China
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9
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Zheng Y, Ou J, Huang D, Zhou Z, Dong X, Chen J, Liang D, Liu J, Liu Y, Chen J, Huang X, Tan N. The U-Shaped Relationship Between Serum Uric Acid and Long-Term All-Cause Mortality in Coronary Artery Disease Patients: A Cohort Study of 33,034 Patients. Front Cardiovasc Med 2022; 9:858889. [PMID: 35811724 PMCID: PMC9256977 DOI: 10.3389/fcvm.2022.858889] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 05/12/2022] [Indexed: 11/17/2022] Open
Abstract
Background Associations between high serum uric acid (SUA) and cardiovascular diseases have been reported. However, few studies have been conducted to explore the relationship between SUA and long-term all-cause mortality in coronary artery disease (CAD) patients. Our study aims to investigate the relationship between SUA and long-term all-cause mortality in patients with CAD. Methods From January 2007 to December 2018, we divided 33,034 patients with CAD admitted in the Guangdong Provincial People's Hospital into five groups (quintile 1: SUA <5.05 mg/dl, quintile 2: 5.05 mg/dl ≤ SUA <5.59 mg/dl, quintile 3:5.59 mg/dl ≤ SUA <6.8 mg/dl, quintile 4, 6.8 mg/dl ≤ SUA <7.93 mg/dl, and quintile 5, SUA ≥7.93 mg/d;). This study used Kaplan–Meier survival analysis to evaluate patient outcomes with different ranges of SUA. Cox proportional hazards regression models and restricted cubic spline were applied to determine the association between serum uric and long-term all-cause mortality. Results A total of 33,034 participants were recruited, including 24,780 (75.01%) men and 8,254 (24.99) women in this cohort study. Median follow-up was 4.91 years. We found that SUA is an independent risk factor of long-term all-cause mortality according to the result of Cox proportional hazards models. This study also illustrated an approximate U-shape association between SUA and all-cause mortality when compared with 5.95 mg/lL ≤ SUA <6.8 mg/dl, SUA <5.0 5mg/dl (adjusted hazard ratio (aHR) =1.13, 95% CI: 1.01–1.26, p = 0.03), and SUA ≥8 mg/dL (aHR = 1.18, 95% CI: 1.06-1.32, p = 0.003). Conclusion Our study indicated a U-shaped relationship between SUA and long-term all-cause mortality in patients with CAD. No matter whether SUA is too high or too low, it increased the all-cause mortality in the CAD population, which deserves to be closely monitored.
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Affiliation(s)
- Yiying Zheng
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Department of Cardiology, People's Hospital of Yangjiang, Yangjiang, China
| | - Jiaman Ou
- Department of Cardiology, People's Hospital of Yangjiang, Yangjiang, China
| | - Dehua Huang
- Department of Cardiology, People's Hospital of Yangjiang, Yangjiang, China
| | - Ziyou Zhou
- Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Xiaoli Dong
- Department of Ultrasound Imaging, Yunnan Fuwai Cardiovascular Hospital, Kunming, China
| | - Jie Chen
- Department of Cardiology, Guangdong Medical University, Zhanjiang, China
| | - Dandan Liang
- Department of Cardiology, People's Hospital of Yangjiang, Yangjiang, China
| | - Jin Liu
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yong Liu
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Jiyan Chen
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Department of Cardiology, People's Hospital of Yangjiang, Yangjiang, China
- Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Xiaoyu Huang
- Department of Cardiology, People's Hospital of Yangjiang, Yangjiang, China
- *Correspondence: Xiaoyu Huang
| | - Ning Tan
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- Ning Tan
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10
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Gherghina ME, Peride I, Tiglis M, Neagu TP, Niculae A, Checherita IA. Uric Acid and Oxidative Stress-Relationship with Cardiovascular, Metabolic, and Renal Impairment. Int J Mol Sci 2022; 23:ijms23063188. [PMID: 35328614 PMCID: PMC8949471 DOI: 10.3390/ijms23063188] [Citation(s) in RCA: 99] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/11/2022] [Accepted: 03/12/2022] [Indexed: 01/27/2023] Open
Abstract
Background: The connection between uric acid (UA) and renal impairment is well known due to the urate capacity to precipitate within the tubules or extra-renal system. Emerging studies allege a new hypothesis concerning UA and renal impairment involving a pro-inflammatory status, endothelial dysfunction, and excessive activation of renin–angiotensin–aldosterone system (RAAS). Additionally, hyperuricemia associated with oxidative stress is incriminated in DNA damage, oxidations, inflammatory cytokine production, and even cell apoptosis. There is also increasing evidence regarding the association of hyperuricemia with chronic kidney disease (CKD), cardiovascular disease, and metabolic syndrome or diabetes mellitus. Conclusions: Important aspects need to be clarified regarding hyperuricemia predisposition to oxidative stress and its effects in order to initiate the proper treatment to determine the optimal maintenance of UA level, improving patients’ long-term prognosis and their quality of life.
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Affiliation(s)
- Mihai-Emil Gherghina
- Department of Nephrology, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (M.-E.G.); (I.A.C.)
| | - Ileana Peride
- Department of Nephrology, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (M.-E.G.); (I.A.C.)
- Correspondence: (I.P.); (A.N.)
| | - Mirela Tiglis
- Department of Anesthesiology and Intensive Care, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania;
| | - Tiberiu Paul Neagu
- Department of Plastic Surgery and Reconstructive Microsurgery, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania;
| | - Andrei Niculae
- Department of Nephrology, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (M.-E.G.); (I.A.C.)
- Correspondence: (I.P.); (A.N.)
| | - Ionel Alexandru Checherita
- Department of Nephrology, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania; (M.-E.G.); (I.A.C.)
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11
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Comparison of chemometric strategies for potential exposure marker discovery and false-positive reduction in untargeted metabolomics: application to the serum analysis by LC-HRMS after intake of Vaccinium fruit supplements. Anal Bioanal Chem 2022; 414:1841-1855. [PMID: 35028688 DOI: 10.1007/s00216-021-03815-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/18/2021] [Accepted: 11/30/2021] [Indexed: 11/01/2022]
Abstract
Untargeted liquid chromatographic-high-resolution mass spectrometric (LC-HRMS) metabolomics for potential exposure marker (PEM) discovery in nutrikinetic studies generates complex outputs. The correct selection of statistically significant PEMs is a crucial analytical step for understanding nutrition-health interactions. Hence, in this paper, different chemometric selection workflows for PEM discovery, using multivariate or univariate parametric or non-parametric data analyses, were comparatively tested and evaluated. The PEM selection protocols were applied to a small-sample-size untargeted LC-HRMS study of a longitudinal set of serum samples from 20 volunteers after a single intake of (poly)phenolic-rich Vaccinium myrtillus and Vaccinium corymbosum supplements. The non-parametric Games-Howell test identified a restricted group of significant features, thus minimizing the risk of false-positive retention. Among the forty-seven PEMs exhibiting a statistically significant postprandial kinetics, twelve were successfully annotated as purine pathway metabolites, benzoic and benzodiol metabolites, indole alkaloids, and organic and fatty acids, and five (i.e. octahydro-methyl-β-carboline-dicarboxylic acid, tetrahydro-methyl-β-carboline-dicarboxylic acid, citric acid, caprylic acid, and azelaic acid) were associated to Vaccinium berry consumption for the first time. The analysis of the area under the curve of the longitudinal dataset highlighted thirteen statistically significant PEMs discriminating the two interventions, including four intra-intervention relevant metabolites (i.e. abscisic acid glucuronide, catechol sulphate, methyl-catechol sulphate, and α-hydroxy-hippuric acid). Principal component analysis and sample classification through linear discriminant analysis performed on PEM maximum intensity confirmed the discriminating role of these PEMs.
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12
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Goldberg A, Garcia-Arroyo F, Sasai F, Rodriguez-Iturbe B, Sanchez-Lozada LG, Lanaspa MA, Johnson RJ. Mini Review: Reappraisal of Uric Acid in Chronic Kidney Disease. Am J Nephrol 2021; 52:837-844. [PMID: 34673651 DOI: 10.1159/000519491] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 09/06/2021] [Indexed: 12/16/2022]
Abstract
Hyperuricemia predicts the development of chronic kidney disease (CKD) and metabolic complications, but whether it has a causal role has been controversial. This is especially true given the 2 recently conducted randomized controlled trials that failed to show a benefit of lowering uric acid in type 1 diabetes-associated CKD and subjects with stage 3-4 CKD. While these studies suggest that use of urate-lowering drugs in unselected patients is unlikely to slow the progression of CKD, there are subsets of subjects with CKD where reducing uric acid synthesis may be beneficial. This may be the case in patients with gout, hyperuricemia (especially associated with increased production), and urate crystalluria. Here, we discuss the evidence and propose that future clinical trials targeting these specific subgroups should be performed.
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Affiliation(s)
- Avi Goldberg
- Clalit Health Services, Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - Fumihiko Sasai
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | | | | | - Miguel A Lanaspa
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Richard J Johnson
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Rocky Mountain VA Medical Center, Aurora, Colorado, USA
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13
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Hyperuricemia and Progression of Chronic Kidney Disease: A Review from Physiology and Pathogenesis to the Role of Urate-Lowering Therapy. Diagnostics (Basel) 2021; 11:diagnostics11091674. [PMID: 34574015 PMCID: PMC8466342 DOI: 10.3390/diagnostics11091674] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 12/19/2022] Open
Abstract
The relationship between hyperuricemia, gout, and renal disease has been investigated for several years. From the beginning, kidney disease has been considered a complication of gout; however, the viewpoints changed, claiming that hypertension and elevated uric acid (UA) levels are caused by decreased urate excretion in patients with renal impairment. To date, several examples of evidence support the role of hyperuricemia in cardiovascular or renal diseases. Several mechanisms have been identified that explain the relationship between hyperuricemia and chronic kidney disease, including the crystal effect, renin-angiotensin-aldosterone system activation, nitric oxide synthesis inhibition, and intracellular oxidative stress stimulation, and urate-lowering therapy (ULT) has been proven to reduce renal disease progression in the past few years. In this comprehensive review, the source and physiology of UA are introduced, and the mechanisms that explain the reciprocal relationship between hyperuricemia and kidney disease are reviewed. Lastly, current evidence supporting the use of ULT to postpone renal disease progression in patients with hyperuricemia and gout are summarized.
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14
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Zhang W, Zhao X, Diao L, Li H, Tong Z, Gu Z, Miao B, Xu Z, Zhang H, Wu Y, Li J. Highly Sensitive Uric Acid Detection Based on a Graphene Chemoresistor and Magnetic Beads. BIOSENSORS 2021; 11:bios11090304. [PMID: 34562894 PMCID: PMC8468455 DOI: 10.3390/bios11090304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 08/22/2021] [Accepted: 08/27/2021] [Indexed: 05/14/2023]
Abstract
In this study, we developed a low-cost, reusable, and highly sensitive analytical platform for the detection of the human metabolite uric acid (UA). This novel analysis platform combines the graphene chemoresistor detection technique with a magnetic bead (MB) system. The heterojunction (single-layer graphene and HfO2 thin-film material) of our graphene-based biosensor worked as a transducer to detect the pH change caused by the specific catalytic reaction between UA and uricase, and hence acquires a UA concentration. Immobilization of uricase on MBs can decouple the functionalization steps from the sensor surface, which allows the sensor to be reusable. Our microsensor platform exhibits a relatively lower detection limit (1 μM), high sensitivity (5.6 mV/decade), a linear range (from 1 μM to 1000 μM), and excellent linearity (R2 = 0.9945). In addition, interference assay and repeatability tests were conducted, and the result suggests that our method is highly stable and not affected by common interfering substances (glucose and urea). The integration of this high-performance and compact biosensor device can create a point-of-care diagnosis system with reduced cost, test time, and reagent volume.
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Affiliation(s)
- Wangyang Zhang
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, China; (W.Z.); (L.D.); (H.L.); (Z.T.); (Z.G.); (B.M.); (Z.X.)
- College of Mechatronic Engineering, North University of China, Taiyuan 030051, China;
| | - Xiaoqiang Zhao
- College of Mechatronic Engineering, North University of China, Taiyuan 030051, China;
| | - Lina Diao
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, China; (W.Z.); (L.D.); (H.L.); (Z.T.); (Z.G.); (B.M.); (Z.X.)
- School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei 230026, China
| | - Hao Li
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, China; (W.Z.); (L.D.); (H.L.); (Z.T.); (Z.G.); (B.M.); (Z.X.)
- College of Mechatronic Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Zhonghao Tong
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, China; (W.Z.); (L.D.); (H.L.); (Z.T.); (Z.G.); (B.M.); (Z.X.)
- College of Mechatronic Engineering, North University of China, Taiyuan 030051, China;
| | - Zhiqi Gu
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, China; (W.Z.); (L.D.); (H.L.); (Z.T.); (Z.G.); (B.M.); (Z.X.)
| | - Bin Miao
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, China; (W.Z.); (L.D.); (H.L.); (Z.T.); (Z.G.); (B.M.); (Z.X.)
| | - Zhan Xu
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, China; (W.Z.); (L.D.); (H.L.); (Z.T.); (Z.G.); (B.M.); (Z.X.)
- School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei 230026, China
| | - Han Zhang
- Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843, USA;
| | - Yue Wu
- College of Mechatronic Engineering, North University of China, Taiyuan 030051, China;
- Correspondence: (Y.W.); (J.L.); Tel.: +81-03-513-922-752 (Y.W.); +86-51-262-872-678 (J.L.)
| | - Jiadong Li
- Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, China; (W.Z.); (L.D.); (H.L.); (Z.T.); (Z.G.); (B.M.); (Z.X.)
- Correspondence: (Y.W.); (J.L.); Tel.: +81-03-513-922-752 (Y.W.); +86-51-262-872-678 (J.L.)
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15
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Borras E, Schrumpf L, Stephens N, Weimer BC, Davis CE, Schelegle ES. Novel LC-MS-TOF method to detect and quantify ascorbic and uric acid simultaneously in different biological matrices. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1168:122588. [PMID: 33690092 DOI: 10.1016/j.jchromb.2021.122588] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/03/2021] [Accepted: 02/06/2021] [Indexed: 12/29/2022]
Abstract
Ascorbic acid (AA) and uric acid (UA) are known as two of the major antioxidants in biological fluids. We report a novel liquid chromatography-mass spectrometry with time-of-flight (LC-MS-TOF) method for the simultaneous quantification of ascorbic and uric acids using MPA, antioxidant solution and acetonitrile as a protein precipitating agent. Both compounds were separated from interferences using a reverse phase C18 column with water and acetonitrile gradient elution (both with formic acid) and identified and quantified by MS in the negative ESI mode. Isotope labeled internal standards were also added to ensure the accuracy of the measures. The method was validated for exhaled breath condensate (EBC), nasal lavage (NL) and plasma samples by assessing selectivity, linearity, accuracy and precision, recovery and matrix effect and stability. Sample volumes below 250 µL were used and linear ranges were determined between 1 - 25 and 1 - 40 µg/mL for ascorbic and uric acid, respectively, for plasma samples, and between 0.05 - 5 (AA) and 0.05 - 7.5 (UA) µg/mL for EBC and NL samples. The new method was successfully applied to real samples from subjects that provided each of the studied matrices. Results showed higher amounts determined in plasma samples, with similar profiles for AA and UA in EBC and NL but at much lower concentrations.
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Affiliation(s)
- Eva Borras
- Mechanical and Aerospace Engineering, University of California, Davis, Davis, CA, USA
| | - Leah Schrumpf
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA
| | - Noelle Stephens
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA
| | - Bart C Weimer
- Department of Population Health and Reproduction, Veterinary Medicine School, University of California, Davis, Davis, CA, USA
| | - Cristina E Davis
- Mechanical and Aerospace Engineering, University of California, Davis, Davis, CA, USA; VA Northern California Health Care System, 10535 Hospital Way, Mather, CA 95655, USA
| | - Edward S Schelegle
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA.
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16
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An LC-MS/MS- and hURAT1 cell-based approach for screening of uricosuric agents. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1159:122336. [PMID: 32905987 DOI: 10.1016/j.jchromb.2020.122336] [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: 05/09/2020] [Revised: 08/10/2020] [Accepted: 08/16/2020] [Indexed: 11/23/2022]
Abstract
Urate anion exchanger 1 (URAT1) expressed in the proximal renal tubules is responsible for about 90% of the reabsorption of uric acid. URAT1 is identified as an important target of uricosuric drugs. Here we present an LC-MS/MS-based approach, combined with URAT1-transgenic MDCK cells, for the assessment of uric acid. Cell lysis was executed with 50 mM NaOH to release uric acid. 1,3-15N2 uric acid was employed as the internal standard. The harvested uric acid, along with the stable isotope-labeled uric acid, was analyzed by LC-MS/MS in multiple reactions monitoring and negative modes. Validation, i.e. determination of selectivity, precision, accuracy, extraction recovery, and matrix effect, and feasibility was evaluated by use of the approach developed. The linearity was observed in the range of 1.0-250 μM (r = 0.9960) with limit of detection of 50 nM and limit of quantitation of 200 nM. The precision and accuracy were found to be RSD ≤ 20% and 80-120% of the nominal value, respectively. Uric acid uptake showed concentration and time dependency in URAT1-transgenic cells. The observed inhibitory effects of three URAT1-targeted uricosuric drugs were consistent with those reported in literature. The stable isotope dilution-based approach was proven to be selective, sensitive, and convenient, which is a good in vitro model for URAT1-targeted drug candidate screening.
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17
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Hyperuricemia in Kidney Disease: A Major Risk Factor for Cardiovascular Events, Vascular Calcification, and Renal Damage. Semin Nephrol 2020; 40:574-585. [PMID: 33678312 DOI: 10.1016/j.semnephrol.2020.12.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Kidney disease, especially when it is associated with a reduction in estimated glomerular filtration rate, can be associated with an increase in serum urate (uric acid), suggesting that hyperuricemia in subjects with kidney disease may be a strictly secondary phenomenon. Mendelian randomization studies that evaluate genetic scores regulating serum urate also generally have not found evidence that serum urate is a causal risk factor in chronic kidney disease. Nevertheless, this is countered by a large number of epidemiologic, experimental, and clinical studies that have suggested a potentially important role for uric acid in kidney disease and cardiovascular disease. Here, we review the topic in detail. Overall, the studies strongly suggest that hyperuricemia does have an important pathogenic role that likely is driven by intracellular urate levels. An exception may be the role of extracellular uric acid in atherosclerosis and vascular calcification. One of the more striking findings on reviewing the literature is that the primary benefit of lowering serum urate in subjects with CKD is not by slowing the progression of renal disease, but rather by reducing the incidence of cardiovascular events and mortality. We recommend large-scale clinical trials to determine if there is a benefit in lowering serum urate in hyperuricemic subjects in acute and chronic kidney disease and in the reduction of cardiovascular morbidity and mortality in subjects with end-stage chronic kidney disease.
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18
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Sanchez-Lozada LG, Rodriguez-Iturbe B, Kelley EE, Nakagawa T, Madero M, Feig DI, Borghi C, Piani F, Cara-Fuentes G, Bjornstad P, Lanaspa MA, Johnson RJ. Uric Acid and Hypertension: An Update With Recommendations. Am J Hypertens 2020; 33:583-594. [PMID: 32179896 PMCID: PMC7368167 DOI: 10.1093/ajh/hpaa044] [Citation(s) in RCA: 95] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 03/11/2020] [Indexed: 12/24/2022] Open
Abstract
The association between increased serum urate and hypertension has been a subject of intense controversy. Extracellular uric acid drives uric acid deposition in gout, kidney stones, and possibly vascular calcification. Mendelian randomization studies, however, indicate that serum urate is likely not the causal factor in hypertension although it does increase the risk for sudden cardiac death and diabetic vascular disease. Nevertheless, experimental evidence strongly suggests that an increase in intracellular urate is a key factor in the pathogenesis of primary hypertension. Pilot clinical trials show beneficial effect of lowering serum urate in hyperuricemic individuals who are young, hypertensive, and have preserved kidney function. Some evidence suggest that activation of the renin-angiotensin system (RAS) occurs in hyperuricemia and blocking the RAS may mimic the effects of xanthine oxidase inhibitors. A reduction in intracellular urate may be achieved by lowering serum urate concentration or by suppressing intracellular urate production with dietary measures that include reducing sugar, fructose, and salt intake. We suggest that these elements in the western diet may play a major role in the pathogenesis of primary hypertension. Studies are necessary to better define the interrelation between uric acid concentrations inside and outside the cell. In addition, large-scale clinical trials are needed to determine if extracellular and intracellular urate reduction can provide benefit hypertension and cardiometabolic disease.
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Affiliation(s)
- Laura G Sanchez-Lozada
- Department of Cardio-Renal Physiopathology, Instituto Nacional de Cardiología “Ignacio Chávez”, Mexico City, Mexico
| | - Bernardo Rodriguez-Iturbe
- Department of Cardio-Renal Physiopathology, Instituto Nacional de Cardiología “Ignacio Chávez”, Mexico City, Mexico
- Department of Nephrology, Instituto Nacional de Ciencias Médicas Y Nutrición “Salvador Zubirán”, Mexico City, Mexico
| | - Eric E Kelley
- Department of Physiology and Pharmacology, West Virginia University, Morgantown, WV, USA
| | | | - Magdalena Madero
- Department of Cardio-Renal Physiopathology, Instituto Nacional de Cardiología “Ignacio Chávez”, Mexico City, Mexico
| | - Dan I Feig
- Division of Pediatric Nephrology, University of Alabama, Birmingham, Alabama, USA
| | - Claudio Borghi
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Federica Piani
- Department of Cardio-Renal Physiopathology, Instituto Nacional de Cardiología “Ignacio Chávez”, Mexico City, Mexico
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Gabriel Cara-Fuentes
- Department of Pediatrics, Division of Pediatric Nephrology, University of Colorado, Aurora, Colorado, USA
| | - Petter Bjornstad
- Division of Pediatric Endocrinology, University of Colorado, Aurora, Colorado, USA
| | - Miguel A Lanaspa
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Richard J Johnson
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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Wada S, Matsunaga N, Tamai I. Mathematical modeling analysis of hepatic uric acid disposition using human sandwich-cultured hepatocytes. Drug Metab Pharmacokinet 2020; 35:432-440. [PMID: 32807664 DOI: 10.1016/j.dmpk.2020.06.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 05/24/2020] [Accepted: 06/15/2020] [Indexed: 12/14/2022]
Abstract
Uric acid is biosynthesized from purine by xanthine oxidase (XO) mainly in the liver and is excreted into urine and feces. Although several transporters responsible for renal and intestinal handling of uric acid have been reported, information on hepatic transporters is limited. In the present study, we studied quantitative contribution of transporters for hepatic handling of uric acid by mathematical modeling analysis in human sandwich-cultured hepatocytes (hSCH). Stable isotope-labeled hypoxanthine, hypoxanthine-13C2,15N (HX), was incubated with hSCH and formed 13C2,15N-labeled xanthine (XA) and uric acid (UA) were measured by LC-MS/MS time dependently. Rate constants for metabolism and efflux and uptake transport across sinusoidal and bile canalicular membranes of HX, XA and UA were estimated in the presence of inhibitors of XO and uric acid transporters. An XO inhibitor allopurinol significantly decreased metabolisms of HX and XA. Efflux into bile canalicular lumen was negligible and sinusoidal efflux was considered main efflux pathway of formed UA. Transporter inhibition study highlighted that GLUT9 strongly and MRP4 intermediately contribute to the sinusoidal efflux of UA with minor contribution of NPT1/4. Modeling analysis developed in the present study should be useful for quantitative prediction of uric acid disposition in liver.
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Affiliation(s)
- Sho Wada
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Japan
| | - Norikazu Matsunaga
- Pharmacokinetic Research Laboratories, Ono Pharmaceutical Co., Ltd., Japan
| | - Ikumi Tamai
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Japan.
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Wang X, Lu J, Tang X, Qiu P. Colorimetric Detection of Uric Acid with High Sensitivity Using Cu2O@Ag Nanocomposites. CHEMISTRY AFRICA 2020. [DOI: 10.1007/s42250-020-00122-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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21
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Comprehensive analysis of mechanism underlying hypouricemic effect of glucosyl hesperidin. Biochem Biophys Res Commun 2020; 521:861-867. [DOI: 10.1016/j.bbrc.2019.10.199] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 10/31/2019] [Indexed: 01/05/2023]
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22
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Alula MT, Lemmens P, Bo L, Wulferding D, Yang J, Spende H. Preparation of silver nanoparticles coated ZnO/Fe3O4 composites using chemical reduction method for sensitive detection of uric acid via surface-enhanced Raman spectroscopy. Anal Chim Acta 2019; 1073:62-71. [DOI: 10.1016/j.aca.2019.04.061] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/20/2019] [Accepted: 04/26/2019] [Indexed: 12/14/2022]
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23
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Sato Y, Feig DI, Stack AG, Kang DH, Lanaspa MA, Ejaz AA, Sánchez-Lozada LG, Kuwabara M, Borghi C, Johnson RJ. The case for uric acid-lowering treatment in patients with hyperuricaemia and CKD. Nat Rev Nephrol 2019; 15:767-775. [PMID: 31296965 DOI: 10.1038/s41581-019-0174-z] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2019] [Indexed: 02/07/2023]
Abstract
Hyperuricaemia is common among patients with chronic kidney disease (CKD), and increases in severity with the deterioration of kidney function. Although existing guidelines for CKD management do not recommend testing for or treatment of hyperuricaemia in the absence of a diagnosis of gout or urate nephrolithiasis, an emerging body of evidence supports a direct causal relationship between serum urate levels and the development of CKD. Here, we review randomized clinical trials that have evaluated the effect of urate-lowering therapy (ULT) on the rate of CKD progression. Among trials in which individuals in the control arm experienced progressive deterioration of kidney function (which we define as ≥4 ml/min/1.73 m² over the course of the study - typically 6 months to 2 years), treatment with ULT conferred consistent clinical benefits. In contrast, among trials where clinical progression was not observed in the control arm, treatment with ULT was ineffective, but this finding should not be used as an argument against the use of uric acid-lowering therapy. Although additional studies are needed to identify threshold values of serum urate for treatment initiation and to confirm optimal target levels, we believe that sufficient evidence exists to recommend routine measurement of serum urate levels in patients with CKD and consider initiation of ULT among those who are hyperuricaemic with evidence of deteriorating renal function, unless specific contraindications exist.
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Affiliation(s)
- Yuka Sato
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Daniel I Feig
- Division of Pediatric Nephrology, University of Alabama, Birmingham, AL, USA
| | - Austin G Stack
- Division of Nephrology, Department of Medicine, University Hospital Limerick, Limerick, Ireland.,Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - Duk-Hee Kang
- Division of Nephrology, Department of Internal Medicine, Ewha Womans University College of Medicine Ewha Medical Research Center, Seoul, South Korea
| | - Miguel A Lanaspa
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - A Ahsan Ejaz
- Division of Nephrology, Hypertension and Renal Transplantation, University of Florida, Gainesville, FL, USA
| | - L Gabriela Sánchez-Lozada
- Laboratory of Renal Physiopathology, Department of Nephrology, INC Ignacio Chavez, Mexico City, Mexico
| | - Masanari Kuwabara
- Department of Cardiology and Intensive Care Unit, Toranomon Hospital, Tokyo, Japan
| | - Claudio Borghi
- Department of Medicine, University of Bologna, Bologna, Italy
| | - Richard J Johnson
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA. .,Rocky Mountain Regional VA Medical Center, Aurora, CO, USA.
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Cai H, Cao T, Li N, Fang P, Xu P, Wu X, Zhang B, Xiang D. Quantitative monitoring of a panel of stress-induced biomarkers in human plasma by liquid chromatography-tandem mass spectrometry: an application in a comparative study between depressive patients and healthy subjects. Anal Bioanal Chem 2019; 411:5765-5777. [PMID: 31201457 DOI: 10.1007/s00216-019-01956-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/21/2019] [Accepted: 05/29/2019] [Indexed: 02/01/2023]
Abstract
Using a metabolomic approach, we have found that stress can induce oxidative damage by disturbing the creatine/phosphocreatine shuttle system and purinergic pathway, leading to an excessive membrane breakdown. To further validate our findings and to monitor the biological impact of stress in research of clinical psychiatry, a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed to simultaneously determine a panel of biomarkers comprising choline, creatine, purinergic metabolites, neurosteroids, lysophosphatidylcholines, and phosphatidylethanolamines in human plasma. After optimization of the extraction protocol, all the 15 analytes plus 4 internal standards with distinct polarities were extracted into an organic phase using methyl tert-butyl ether/methanol (1:1, v/v). A reversed-phase C8 column under gradient elution consisting of aqueous phase A of 5 mM ammonium acetate buffer solution containing 0.1% formic acid and organic phase B of acetonitrile/2-propanol (3:7, v/v) was utilized for separation. Four sequential periods under positive or negative ion mode were combined for the determination of analytes with specific multiple reaction monitoring transitions. For all analytes, this method exhibited good linearity with coefficients of determination (R2) higher than 0.99. The lower limit of quantification (LLOQ) values ranged from 0.05 to 80.0 ng/mL. Recovery between 70.5 and 97.3% was obtained by spiking standards to plasma samples stripped by powdered activated carbon. The intra- and inter-assay relative standard deviations (RSDs) of the analyses varied between 2.0 and 13.3%. The mean accuracy ranged from 90.6 to 109.0%. The matrix effect ranged from 91.2 to 107.3% with variations less than 9.0%. Stability under different conditions was tested, with mean recoveries varying between 90.4 and 109.7%. Finally, the established method was successfully applied to analyze the plasma samples from a small cohort of 30 patients with major depressive disorder and 30 matched healthy controls. Graphical abstract.
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Affiliation(s)
- HuaLin Cai
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China.
- Institute of Clinical Pharmacy, Central South University, Changsha, 410011, Hunan, China.
| | - Ting Cao
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
- Institute of Clinical Pharmacy, Central South University, Changsha, 410011, Hunan, China
| | - NaNa Li
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
- Institute of Clinical Pharmacy, Central South University, Changsha, 410011, Hunan, China
| | - PingFei Fang
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
- Institute of Clinical Pharmacy, Central South University, Changsha, 410011, Hunan, China
| | - Ping Xu
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
- Institute of Clinical Pharmacy, Central South University, Changsha, 410011, Hunan, China
| | - XiangXin Wu
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
- Institute of Clinical Pharmacy, Central South University, Changsha, 410011, Hunan, China
| | - BiKui Zhang
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
- Institute of Clinical Pharmacy, Central South University, Changsha, 410011, Hunan, China
| | - DaXiong Xiang
- Department of Pharmacy, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China.
- Institute of Clinical Pharmacy, Central South University, Changsha, 410011, Hunan, China.
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Lu X, Chen M, Shen J, Xu Y, Wu H. IL-1β functionally attenuates ABCG2 and PDZK1 expression in HK-2 cells partially through NF-ĸB activation. Cell Biol Int 2019; 43:279-289. [PMID: 30632646 DOI: 10.1002/cbin.11100] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 12/28/2018] [Indexed: 12/19/2022]
Abstract
Long-standing untreated hyperuricemia could lead to gout. Several recent studies have demonstrated a significant decrease of serum urate during acute gout attack, which is an aseptic inflammation process focusing on IL-1β. However, how IL-1β, by itself, alters the expression and the functional activity of urate transporters in renal tubular epithelial cells is still unclear. Herein, we revealed that IL-1β could attenuate the mRNA and protein levels of ABCG2, a major urate efflux pump, in HK-2 cells by real-time PCR and Western-blot assays. Moreover, using an ABCG2 specific inhibitor and a new sensitive and specific detection system, it was found that IL-1β also reduced the ABCG2 transporter activities. Incubation with specific inhibitors of the NF-κB pathway partly dampened the inhibitory effect of IL-1β on ABCG2, indicating that IL-1β reduced the ABCG2 expression partially through the NF-ĸB pathway. Furthermore, the decreased expression of PDZK1 induced by IL-1β, which is dependent on the NF-κB pathway, could account for the imbalance between the functions and expressions of ABCG2 on this status. These findings demonstrated a new role for IL-1β, whereby it leads to the inhibition of ABCG2 in renal tubular epithelial cells; this new role probably does not encompass its involvement in the process of renal urate excretion mediated by inflammation. Therefore, other regulation mechanisms of urate reabsorption in renal tubular epithelial cells deserve to be examined in further studies.
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Affiliation(s)
- Xiaoyong Lu
- Department of Rheumatology, the Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, 310009, China
| | - Mo Chen
- Department of Rheumatology, the Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, 310009, China
| | - Jingfang Shen
- Department of Rheumatology, the people's hospital of Xingtai, Hebei, 054000, China
| | - Yujia Xu
- Department of Rheumatology, the Huzhou Central hospital, Zhejiang, 313000, China
| | - Huaxiang Wu
- Department of Rheumatology, the Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, 310009, China
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Raman Spectroscopy as an Assay to Disentangle Zinc Oxide Carbon Nanotube Composites for Optimized Uric Acid Detection. CHEMOSENSORS 2018. [DOI: 10.3390/chemosensors6040065] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Refluxed zinc oxide (ZnO) nanoparticles (NPs) were prepared and attached to carboxylic acid functionalized multi-walled carbon nanotubes (COOH-MWNTs) via sonication. Practical optimization of electrocatalysts using sonication to disentangle a carbon nanotube composite for monitoring uric acid (UA) is shown. Monitoring UA is important for the management of medical disorders. Selection of sonication time is a crucial step in producing the desired composite. We report, for the first time, the practical use of Raman spectroscopy to tune the sonication involved in tethering ZnO NPs to the multi-walled carbon nanotube (MWNT) surface. Maximum current for detecting UA, using chronoamperometry and cyclic voltammetry, correlated with the highest sp2-hybridized carbon signal, as seen in the integrated Raman G band peak areas denoting maximum COOH-MWNT disentanglement. An array of ZnO/COOH-MWNT composites were prepared ranging from 60 to 240 min sonication times. Optimum sonication (150 min) corresponded with both maximum measured current and MWNT disentanglement. The sensor was able to quantitatively and selectively measure UA at clinically relevant concentrations (100–900 μM) with rapid current response time (< 5 s).
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27
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The lipid peroxidation in patients with nephrolithiasis before and after extracorporeal shock wave lithotripsy. Future Med Chem 2018; 10:2685-2693. [PMID: 30518231 DOI: 10.4155/fmc-2018-0149] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
AIM To evaluate the level of lipid peroxidation in patients with nephrolithiasis before and after extracorporeal shock wave lithotripsy (ESWL). MATERIALS & METHODS Isoprostane concentration (8-isoPGF2α) was measured in urine, and thiobarbituric acid reactive substance production in serum and erythrocytes. In addition, the concentrations of selected compounds (uric acid, glucose and creatinine) were measured in serum. RESULTS The patients (before and after ESWL) demonstrated significantly higher levels of two different biomarkers of lipid peroxidation compared with the control group. A correlation was identified between increased amounts of uric acid and biomarkers of lipid peroxidation in patients with nephrolithiasis, both before and after ESWL. CONCLUSION Uric acid may be associated with lipid peroxidation in patients with nephrolithiasis.
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28
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Yang F, Yu Z, Li X, Ren P, Liu G, Song Y, Wang J. Design and synthesis of a novel lanthanide fluorescent probe (Tb III-dtpa-bis(2,6-diaminopurine)) and its application to the detection of uric acid in urine sample. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 203:461-471. [PMID: 29894961 DOI: 10.1016/j.saa.2018.06.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/21/2018] [Accepted: 06/02/2018] [Indexed: 06/08/2023]
Abstract
In this study, a novel fluorescent probe, TbIII-dtpa-bis(2,6-diaminopurine) (Tb-dtpa-bdap), is designed based on the principle of complementary base pairing and synthesized for uric acid detection. The synthesized fluorescent probe is characterized by 1H NMR, 13C NMR, infra-red (IR) spectrum and ultraviolet-visible (UV-vis) spectra. It is found that the fluorescence of Tb-dtpa-bdap solution can be quenched obviously in the presence of uric acid. The affecting factors, including solution acidity, uric acid concentration and interfering substances, on the detection of uric acid using this probe are examined. Under optimized conditions, the fluorescence intensities of Tb-dtpa-bdap solution towards different uric acid concentrations show a linear response in the range from 1.00 × 10-5 mol·L-1 to 5.00 × 10-5 mol·L-1 with a linear correlation coefficient (R2) of 0.9877. And the obtained limit of detection (LOD) is about 5.80 × 10-6 mol·L-1, which is lower than the level of uric acid in actual urine. The mechanism on the detection of uric acid by using Tb-dtpa-bdap is inferred from the experimental results. The facts demonstrate that the proposed fluorescent probe can be successfully applied for the determination of uric acid in human urine samples.
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Affiliation(s)
- Fan Yang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Zhiyue Yu
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Xinyi Li
- College of Environment, Liaoning University, Shenyang 110036, PR China
| | - Peipei Ren
- College of Environment, Liaoning University, Shenyang 110036, PR China
| | - Guanhong Liu
- College of Environment, Liaoning University, Shenyang 110036, PR China
| | - Youtao Song
- College of Environment, Liaoning University, Shenyang 110036, PR China.
| | - Jun Wang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China; College of Environment, Liaoning University, Shenyang 110036, PR China.
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Li Q, Qiu Y, Han W, Zheng Y, Wang X, Xiao D, Mao M, Li Q. Determination of uric acid in biological samples by high performance liquid chromatography-electrospray ionization-tandem mass spectrometry and study on pathogenesis of pulmonary arterial hypertension in pulmonary artery endothelium cells. RSC Adv 2018; 8:25808-25814. [PMID: 35539759 PMCID: PMC9082525 DOI: 10.1039/c7ra12702b] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 07/04/2018] [Indexed: 11/21/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is a severe cardiovascular disease that can lead to vascular remodelling and hypertension. Clinical diagnosis of PAH is very difficult. Uric acid (UA) can act as a biological marker for screening of PAH in patients. Multiple studies have indicated that reactive oxygen species (ROS) play an important role in the development of PAH. Thus, it is important to study the relationship between UA and ROS based on the pathogenesis of PAH. For monitoring PAH, a high performance liquid chromatography-electrospray ionization-tandem mass spectrometry (HPLC-ESI-MS/MS) method was developed to measure the concentration of UA from rat models and pulmonary arterial endothelial cells (PAECs) models, which were induced by monocrotaline (MCT) and hypoxia, respectively. In addition, the treatment groups were treated by N-acetyl-l-cysteine (NAC), a ROS scavenger. With the confirmation from hematoxylin-eosin (H&E) staining, the HPLC-ESI-MS/MS method was adopted to successfully analyze the concentration of UA. In this study, for the first time, thymine was used as an internal standard (I.S.) of uric acid. The results showed that the UA concentration in the PAH groups was higher than that in the normal groups, while the UA concentration in the treatment groups decreased compared to that in the PAH group (p < 0.05). It was experimentally proven that the HPLC-ESI-MS/MS method is a rapid, efficient and reliable quantitative method to detect PAH. Furthermore, our results indicated that UA and ROS have a double-regulator role.
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Affiliation(s)
- Qiaozhi Li
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University Harbin 150086 P. R. China +86-0451-86699347
| | - Yanli Qiu
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University Harbin 150086 P. R. China +86-0451-86699347
- Heilongjiang Far East Cardiovascular Hospital Harbin 150036 P. R. China
| | - Weina Han
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University Harbin 150086 P. R. China
| | - Yaqin Zheng
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University Harbin 150086 P. R. China +86-0451-86699347
| | - Xiaoying Wang
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University Harbin 150086 P. R. China +86-0451-86699347
| | - Dandan Xiao
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University Harbin 150086 P. R. China +86-0451-86699347
| | - Min Mao
- Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University (Daqing) Daqing 163319 P. R. China
| | - Qian Li
- Department of Pharmaceutical Analysis and Analytical Chemistry, College of Pharmacy, Harbin Medical University Harbin 150086 P. R. China +86-0451-86699347
- Biological Sciences, Purdue University West Lafayette Indiana USA
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Johnson RJ, Bakris GL, Borghi C, Chonchol MB, Feldman D, Lanaspa MA, Merriman TR, Moe OW, Mount DB, Sanchez Lozada LG, Stahl E, Weiner DE, Chertow GM. Hyperuricemia, Acute and Chronic Kidney Disease, Hypertension, and Cardiovascular Disease: Report of a Scientific Workshop Organized by the National Kidney Foundation. Am J Kidney Dis 2018; 71:851-865. [PMID: 29496260 DOI: 10.1053/j.ajkd.2017.12.009] [Citation(s) in RCA: 357] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 12/03/2017] [Indexed: 12/21/2022]
Abstract
Urate is a cause of gout, kidney stones, and acute kidney injury from tumor lysis syndrome, but its relationship to kidney disease, cardiovascular disease, and diabetes remains controversial. A scientific workshop organized by the National Kidney Foundation was held in September 2016 to review current evidence. Cell culture studies and animal models suggest that elevated serum urate concentrations can contribute to kidney disease, hypertension, and metabolic syndrome. Epidemiologic evidence also supports elevated serum urate concentrations as a risk factor for the development of kidney disease, hypertension, and diabetes, but differences in methodologies and inpacts on serum urate concentrations by even subtle changes in kidney function render conclusions uncertain. Mendelian randomization studies generally do not support a causal role of serum urate in kidney disease, hypertension, or diabetes, although interpretation is complicated by nonhomogeneous populations, a failure to consider environmental interactions, and a lack of understanding of how the genetic polymorphisms affect biological mechanisms related to urate. Although several small clinical trials suggest benefits of urate-lowering therapies on kidney function, blood pressure, and insulin resistance, others have been negative, with many trials having design limitations and insufficient power. Thus, whether uric acid has a causal role in kidney and cardiovascular diseases requires further study.
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Affiliation(s)
| | | | | | | | | | | | | | - Orson W Moe
- University of Texas Southwestern Medical Center, Dallas, TX
| | - David B Mount
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | | | - Eli Stahl
- Mount Sinai School of Medicine, New York City, NY
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Liu XY, Luo Y, Zhou CY, Peng A, Liu JY. A sensitive and accurate method to simultaneously measure uric acid and creatinine in human saliva by using LC-MS/MS. Bioanalysis 2017; 9:1751-1760. [PMID: 28967800 DOI: 10.4155/bio-2017-0189] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 09/20/2019] [Indexed: 01/29/2023] Open
Abstract
AIM To establish a method to simultaneously measure uric acid (UA) and creatinine (Cr) in human saliva. MATERIALS & METHODS By using HPLC-MS/MS, we developed and validated a fast, sensitive and accurate method to simultaneously determine UA and Cr in human saliva. The determination range for Cr and UA is of 10-5000 ng/ml with the R2 for both calibration curves over 0.999. The accuracy, precision and recovery of Cr and UA were all acceptable. By using the established method, the Cr and UA levels in saliva from 28 healthy volunteers were measured as 2.9 ± 0.8 µM and 46.8 ± 18.2 µM, respectively. CONCLUSION This method can simultaneously determine Cr and UA in saliva for clinical and translational study.
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Affiliation(s)
- Xin-Ying Liu
- Center for Nephrology & Metabolomics & Division of Nephrology & Rheumatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ying Luo
- Center for Nephrology & Metabolomics & Division of Nephrology & Rheumatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chun-Yu Zhou
- Center for Nephrology & Metabolomics & Division of Nephrology & Rheumatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ai Peng
- Center for Nephrology & Metabolomics & Division of Nephrology & Rheumatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jun-Yan Liu
- Center for Nephrology & Metabolomics & Division of Nephrology & Rheumatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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Uric acid, an important antioxidant contributing to survival in termites. PLoS One 2017; 12:e0179426. [PMID: 28609463 PMCID: PMC5469489 DOI: 10.1371/journal.pone.0179426] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 05/29/2017] [Indexed: 12/21/2022] Open
Abstract
Reactive oxygen species (ROS) are generated spontaneously in all organisms and cause oxidative damage to biomolecules when present in excess. Accumulated oxidative damage accelerates aging; enhanced antioxidant capacity may be a positive factor for longevity. Recently, numerous studies of aging and longevity have been performed using short-lived animals, however, longevity mechanisms remain unknown. Here we show that a termite Reticulitermes speratus that is thought to be long-lived eusocial insect than other solitary insects uses large quantities of uric acid as an antioxidant against ROS. We demonstrated that the accumulation of uric acid considerably increases the free radical-scavenging activity and resistance against ultraviolet-induced oxidative stress in laboratory-maintained termites. In addition, we found that externally administered uric acid aided termite survival under highly oxidative conditions. The present data demonstrates that in addition to nutritional and metabolic roles, uric acid is an essential antioxidant for survival and contributes significantly to longevity. Uric acid also plays important roles in primates but causes gout when present in excess in humans. Further longevity studies of long-lived organisms may provide important breakthroughs with human health applications.
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Kul D, Öztürk G. Poly(Methyl Red) Modified Glassy Carbon Electrodes: Electrosynthesis, Characterization, and Sensor Behavior. ELECTROANAL 2017. [DOI: 10.1002/elan.201700043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Dilek Kul
- Karadeniz Technical University, Faculty of Pharmacy; Department of Analytical Chemistry; 61080 Trabzon Turkey
| | - Gökçe Öztürk
- Karadeniz Technical University, Faculty of Pharmacy; Department of Analytical Chemistry; 61080 Trabzon Turkey
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34
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Li XL, Li G, Jiang YZ, Kang D, Jin CH, Shi Q, Jin T, Inoue K, Todoroki K, Toyo'oka T, Min JZ. Human nails metabolite analysis: A rapid and simple method for quantification of uric acid in human fingernail by high-performance liquid chromatography with UV-detection. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 1002:394-8. [DOI: 10.1016/j.jchromb.2015.08.044] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 08/04/2015] [Accepted: 08/27/2015] [Indexed: 01/24/2023]
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35
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Rukdee N, Rojsanga P, Phechkrajang CM. Development and Validation of LC-MS/MS Method for Quantitative Determination of Adenosine, Guanosine, Xanthine and Uric Acid in Widely Consumed Vegetables in Thailand. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, a triple quadrupole LC-MS/MS electrospray ionization method was developed and validated for quantitative determination of adenosine, guanosine, xanthine and uric acid in fifteen widely consumed Thai vegetables. The method was successively developed by using caffeine as internal standard. The lower limit of quantitation (LLOQ) was 0.2 μg/g for adenosine and guanosine, and 1.0 μg/g for uric acid and xanthine. The method was fully validated according to USFDA guidelines and all performance characteristics were found acceptable. Subsequently, the developed and validated LC-MS/MS method was applied to determine the four interest substances in fifteen widely consumed vegetables in Thailand. The results showed that all vegetables included in the study could be classified as low adenosine, guanosine, xanthine and uric acid containing foods since the concentrations of these substances were less than 50 mg per 100 g. This finding was enormously valuable information for hyperuricemia and gouty patients.
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Affiliation(s)
- Narisa Rukdee
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Rd., Payathai, Rachathevi, Bangkok, 10400 Thailand
| | - Piyanuch Rojsanga
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Rd., Payathai, Rachathevi, Bangkok, 10400 Thailand
| | - Chutima Matayatsuk Phechkrajang
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Rd., Payathai, Rachathevi, Bangkok, 10400 Thailand
- Center of Excellence for Innovation in Drug Design and Discovery, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
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Kanďár R. The ratio of oxidized and reduced forms of selected antioxidants as a possible marker of oxidative stress in humans. Biomed Chromatogr 2015; 30:13-28. [PMID: 26053056 DOI: 10.1002/bmc.3529] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 05/20/2015] [Accepted: 05/29/2015] [Indexed: 02/04/2023]
Abstract
Oxidative stress is an imbalance between reactive oxygen species exposure and the ability of organisms to detoxify the reactive intermediates and to repair the oxidative damage of biologically important molecules. Many clinical studies of oxidative stress unfortunately provide conflicting and contradictory results. The ability of antioxidant systems to adequately respond to oxidative stress can be used in laboratory diagnostics. In the present review, methods using the ratio of reduced and oxidized forms of uric acid, ascorbic acid, glutathione and coenzyme Q10 as suitable indicators of oxidative stress are discussed. From the mentioned publications it is evident that suitable sample preparation prior to analysis is crucial.
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Affiliation(s)
- Roman Kanďár
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
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Validation of a multi-analyte HPLC-DAD method for determination of uric acid, creatinine, homovanillic acid, niacinamide, hippuric acid, indole-3-acetic acid and 2-methylhippuric acid in human urine. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 998-999:40-4. [PMID: 26151191 DOI: 10.1016/j.jchromb.2015.06.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 06/15/2015] [Accepted: 06/17/2015] [Indexed: 01/01/2023]
Abstract
During the last decades exposure sciences and epidemiological studies attracts more attention to unravel the mechanisms for the development of chronic diseases. According to this an existing HPLC-DAD method for determination of creatinine in urine samples was expended for seven analytes and validated. Creatinine, uric acid, homovanillic acid, niacinamide, hippuric acid, indole-3-acetic acid, and 2-methylhippuric acid were separated by gradient elution (formate buffer/methanol) using an Eclipse Plus C18 Rapid Resolution column (4.6mm×100mm). No interfering signals were detected in mobile phase. After injection of blank urine samples signals for the endogenous compounds but no interferences were detected. All analytes were linear in the selected calibration range and a non weighted calibration model was chosen. Bias, intra-day and inter-day precision for all analytes were below 20% for quality control (QC) low and below 10% for QC medium and high. The limits of quantification in mobile phase were in line with reported reference values but had to be adjusted in urine for homovanillic acid (45mg/L), niacinamide 58.5(mg/L), and indole-3-acetic acid (63mg/L). Comparison of creatinine data obtained by the existing method with those of the developed method showing differences from -120mg/L to +110mg/L with a mean of differences of 29.0mg/L for 50 authentic urine samples. Analyzing 50 authentic urine samples, uric acid, creatinine, hippuric acid, and 2-methylhippuric acid were detected in (nearly) all samples. However, homovanillic acid was detected in 40%, niacinamide in 4% and indole-3-acetic acid was never detected within the selected samples.
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Onetti Y, Dantas AP, Pérez B, Cugota R, Chamorro A, Planas AM, Vila E, Jiménez-Altayó F. Middle cerebral artery remodeling following transient brain ischemia is linked to early postischemic hyperemia: a target of uric acid treatment. Am J Physiol Heart Circ Physiol 2015; 308:H862-74. [PMID: 25637543 DOI: 10.1152/ajpheart.00001.2015] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Accepted: 01/28/2015] [Indexed: 12/26/2022]
Abstract
Ischemia impairs blood supply to the brain, and reperfusion is important to restore cerebral blood flow (CBF) and rescue neurons from cell death. However, reperfusion can induce CBF values exceeding the basal values before ischemia. This hyperemic effect has been associated with a worse ischemic brain damage, albeit the mechanisms that contribute to infarct expansion are not clear. In this study, we investigated the influence of early postischemic hyperemia on brain damage and middle cerebral artery (MCA) properties and the effect of treatment with the endogenous antioxidant uric acid (UA). The MCA was occluded for 90 min followed by 24 h reperfusion in adult male Sprague-Dawley rats. Cortical CBF increases at reperfusion beyond 20% of basal values were taken as indicative of hyperemia. UA (16 mg/kg) or vehicle (Locke's buffer) was administered intravenously 135 min after MCA occlusion. Hyperemic compared with nonhyperemic rats showed MCA wall thickening (sham: 22.4 ± 0.8 μm; nonhyperemic: 23.1 ± 1.2 μm; hyperemic: 27.8 ± 0.9 at 60 mmHg; P < 0.001, hyperemic vs. sham) involving adventitial cell proliferation, increased oxidative stress, and interleukin-18, and more severe brain damage. Thus MCA remodeling after ischemia-reperfusion takes place under vascular oxidative and inflammatory stress conditions linked to hyperemia. UA administration attenuated MCA wall thickening, induced passive lumen expansion, and reduced brain damage in hyperemic rats, although it did not increase brain UA concentration. We conclude that hyperemia at reperfusion following brain ischemia induces vascular damage that can be attenuated by administration of the endogenous antioxidant UA.
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Affiliation(s)
- Yara Onetti
- Facultat de Medicina, Departament de Farmacologia, Terapèutica i Toxicologia, Institut de Neurociències, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Ana P Dantas
- Institut Clínic del Tòrax, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Belén Pérez
- Facultat de Medicina, Departament de Farmacologia, Terapèutica i Toxicologia, Institut de Neurociències, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Roger Cugota
- Facultat de Medicina, Departament de Farmacologia, Terapèutica i Toxicologia, Institut de Neurociències, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Angel Chamorro
- Functional Unit of Cerebrovascular Diseases, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain; and
| | - Anna M Planas
- Departament d'Isquèmia Cerebral i Neurodegeneració, Institut de Recerca Biomèdica, Consejo Superior de Investigaciones Científicas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Elisabet Vila
- Facultat de Medicina, Departament de Farmacologia, Terapèutica i Toxicologia, Institut de Neurociències, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Francesc Jiménez-Altayó
- Facultat de Medicina, Departament de Farmacologia, Terapèutica i Toxicologia, Institut de Neurociències, Universitat Autònoma de Barcelona, Bellaterra, Spain;
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Rapid Determination of Uric Acid in Human Urine by CE with an Improved Electromagnetic Induction Detector. Chromatographia 2014. [DOI: 10.1007/s10337-014-2807-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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40
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Hyperuricemic PRP in tendon cells. BIOMED RESEARCH INTERNATIONAL 2014; 2014:926481. [PMID: 25276832 PMCID: PMC4170825 DOI: 10.1155/2014/926481] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 07/31/2014] [Accepted: 08/04/2014] [Indexed: 01/03/2023]
Abstract
Platelet-rich plasma (PRP) is injected within tendons to stimulate healing. Metabolic alterations such as the metabolic syndrome, diabetes, or hyperuricemia could hinder the therapeutic effect of PRP. We hypothesise that tendon cells sense high levels of uric acid and this could modify their response to PRP. Tendon cells were treated with allogeneic PRPs for 96 hours. Hyperuricemic PRP did not hinder the proliferative actions of PRP. The gene expression pattern of inflammatory molecules in response to PRP showed absence of IL-1b and COX1 and modest expression of IL6, IL8, COX2, and TGF-b1. IL8 and IL6 proteins were secreted by tendon cells treated with PRP. The synthesis of IL6 and IL8 proteins induced by PRP is decreased significantly in the presence of hyperuricemia (P = 0.017 and P = 0.012, resp.). Concerning extracellular matrix, PRP-treated tendon cells displayed high type-1 collagen, moderate type-3 collagen, decorin, and hyaluronan synthase-2 expression and modest expression of scleraxis. Hyperuricemia modified the expression pattern of extracellular matrix proteins, upregulating COL1 (P = 0.036) and COMP (P = 0.012) and downregulating HAS2 (P = 0.012). Positive correlations between TGF-b1 and type-1 collagen (R = 0.905, P = 0.002) and aggrecan (R = 0.833, P = 0.010) and negative correlations between TGF-b1 and IL6 synthesis (R = -0.857, P = 0.007) and COX2 (R = -0.810, P = 0.015) were found.
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DeBosch BJ, Kluth O, Fujiwara H, Schürmann A, Moley K. Early-onset metabolic syndrome in mice lacking the intestinal uric acid transporter SLC2A9. Nat Commun 2014; 5:4642. [PMID: 25100214 DOI: 10.1038/ncomms5642] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 07/10/2014] [Indexed: 12/14/2022] Open
Abstract
Excess circulating uric acid, a product of hepatic glycolysis and purine metabolism, often accompanies metabolic syndrome. However, whether hyperuricaemia contributes to the development of metabolic syndrome or is merely a by-product of other processes that cause this disorder has not been resolved. In addition, how uric acid is cleared from the circulation is incompletely understood. Here we present a genetic model of spontaneous, early-onset metabolic syndrome in mice lacking the enterocyte urate transporter Glut9 (encoded by the SLC2A9 gene). Glut9-deficient mice develop impaired enterocyte uric acid transport kinetics, hyperuricaemia, hyperuricosuria, spontaneous hypertension, dyslipidaemia and elevated body fat. Allopurinol, a xanthine oxidase inhibitor, can reverse the hypertension and hypercholesterolaemia. These data provide evidence that hyperuricaemia per se could have deleterious metabolic sequelae. Moreover, these findings suggest that enterocytes may regulate whole-body metabolism, and that enterocyte urate metabolism could potentially be targeted to modulate or prevent metabolic syndrome.
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Affiliation(s)
- Brian J DeBosch
- BJC Institute of Health, Washington University School of Medicine, 10th Floor 425 S., Euclid Avenue Campus, Box 8064, St Louis, MO 63110, USA
| | - Oliver Kluth
- Department of Experimental Diabetology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal 14558, Germany
| | - Hideji Fujiwara
- BJC Institute of Health, Washington University School of Medicine, 10th Floor 425 S., Euclid Avenue Campus, Box 8064, St Louis, MO 63110, USA
| | - Annette Schürmann
- Department of Experimental Diabetology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal 14558, Germany
| | - Kelle Moley
- BJC Institute of Health, Washington University School of Medicine, 10th Floor 425 S., Euclid Avenue Campus, Box 8064, St Louis, MO 63110, USA
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42
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Lee M, Kim DH, Shin YJ, Choi SZ, Son M, Sung SH. Analysis ofDioscorea japonicaby Hydrophilic Interaction Liquid Chromatography. ANAL LETT 2014. [DOI: 10.1080/00032719.2013.862628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Oberbach A, Neuhaus J, Inge T, Kirsch K, Schlichting N, Blüher S, Kullnick Y, Kugler J, Baumann S, Till H. Bariatric surgery in severely obese adolescents improves major comorbidities including hyperuricemia. Metabolism 2014; 63:242-9. [PMID: 24332707 DOI: 10.1016/j.metabol.2013.11.012] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 11/13/2013] [Accepted: 11/15/2013] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Serum uric acid (sUA) is believed to contribute to the pathogenesis of metabolic comorbidities like hypertension, insulin-resistance (IR) and endothelial dysfunction (EDF) in obese children. The present pilot study investigated the association between sUA concentrations and loss of body weight following laparoscopic sleeve gastrectomy (LSG) or laparoscopic Roux-en-Y-gastric bypass (RYGB) in severely obese adolescents. MATERIALS/METHODS 10 severely obese adolescents underwent either LSG (n=5) or RYGB (n=5). 17 normal weight, healthy, age- and gender-matched adolescents served as a normal weight peer group (NWPG). Pre- and 12 months postoperatively, sUA and relevant metabolic parameters (glucose homeostasis, transaminases, lipids) were compared. RESULTS Preoperatively, sUA was significantly elevated in patients with severe obesity compared to NWPG. Twelve months after LSG and RYGB, a significant decrease in sUA, BMI, CVD risk factors, hepatic transaminases, and HOMA-IR was observed. Reduction in SDS-BMI significantly correlated with changes in sUA. CONCLUSIONS sUA levels and metabolic comorbidities improved following bariatric surgery in severely obese adolescents. The impact of changes in sUA on long-term clinical complications of childhood obesity deserves further study.
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Affiliation(s)
- Andreas Oberbach
- Department of Cardiac Surgery, University of Leipzig, Heart Center Leipzig, Leipzig, Germany; University of Dresden, Department of Health Sciences/Public Health, Dresden, Germany
| | - Jochen Neuhaus
- Department of Urology, University of Leipzig, Leipzig, Germany
| | - Thomas Inge
- Division of Pediatric Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Katharina Kirsch
- Department of Cardiology, Heart Center, University of Leipzig, Leipzig, Germany
| | - Nadine Schlichting
- Integrated Research and Treatment Center (IFB) Adiposity Diseases, University Leipzig, Leipzig, Germany
| | - Susann Blüher
- Integrated Research and Treatment Center (IFB) Adiposity Diseases, University Leipzig, Leipzig, Germany; Department of Women and Child Health, Hospital for Children and Adolescents, University of Leipzig, Leipzig, Germany
| | - Yvonne Kullnick
- Integrated Research and Treatment Center (IFB) Adiposity Diseases, University Leipzig, Leipzig, Germany
| | - Joachim Kugler
- University of Dresden, Department of Health Sciences/Public Health, Dresden, Germany
| | - Sven Baumann
- Helmholtz Centre for Environmental Research, Department of Metabolomics, Leipzig, Germany
| | - Holger Till
- Department of Pediatric and Adolescent Surgery, Medical University of Graz, Graz, Austria.
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44
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Khoobi A, Ghoreishi SM, Behpour M. Sensitive and selective determination of hydroxychloroquine in the presence of uric acid using a new nanostructure self-assembled monolayer modified electrode: optimization by multivariate data analysis. Analyst 2014; 139:4064-72. [DOI: 10.1039/c4an00422a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A highly sensitive electrochemical nanosensor was developed using covalent modification of a glassy carbon electrode (GCE) by self-assembly of a novel Schiff base.
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Affiliation(s)
- Asma Khoobi
- Department of Analytical Chemistry
- Faculty of Chemistry
- University of Kashan
- Kashan, I.R. Iran
| | - Sayed Mehdi Ghoreishi
- Department of Analytical Chemistry
- Faculty of Chemistry
- University of Kashan
- Kashan, I.R. Iran
| | - Mohsen Behpour
- Department of Analytical Chemistry
- Faculty of Chemistry
- University of Kashan
- Kashan, I.R. Iran
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45
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Luo X, Cai N, Cheng Z. Determination of uric acid in plasma by LC-MS/MS and its application to an efficacy evaluation of recombinant urate oxidase. ANAL SCI 2013; 29:709-13. [PMID: 23842413 DOI: 10.2116/analsci.29.709] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of uric acid in human plasma was developed and validated. Separation was achieved on a C18 column by the mobile phase of 30% water (containing 0.5% formic acid) and 70% methanol. Quantification was done using a multiple reaction monitoring (MRM) mode to monitor the precursor-to-product ion transitions of m/z 169.1 → m/z 141.1 for uric acid and m/z 171 → m/z 143 for 1,3-(15)N uric acid (IS) at a positive ionization mode. The calibration curve was established over the range of 0.4096 - 100 mg/L, and the correlation coefficient was better than 0.99. The intra-day and inter-day relative standard deviations were less than 5.1%. The accuracy determined at three concentrations ranged between 92.7 and 102.3%. This method was successfully applied to an efficacy study of intravenous recombinant urate oxidase produced by Escherichia coli in a clinical phase I study.
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Affiliation(s)
- Xi Luo
- Research Institute of Drug Metabolism and Pharmacokinetics, School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, P. R. China
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46
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Chen S, Zheng H, Wang J, Hou J, He Q, Liu H, Xiong C, Kong X, Nie Z. Carbon Nanodots As a Matrix for the Analysis of Low-Molecular-Weight Molecules in Both Positive- and Negative-Ion Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry and Quantification of Glucose and Uric Acid in Real Samples. Anal Chem 2013; 85:6646-52. [DOI: 10.1021/ac401601r] [Citation(s) in RCA: 138] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Suming Chen
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Huzhi Zheng
- The Key Laboratory of Luminescence
and Real-Time Analysis, Ministry of Education, College of Chemistry
and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Jianing Wang
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jian Hou
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Qing He
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Huihui Liu
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Caiqiao Xiong
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xianglei Kong
- State Key Laboratory of Elemento-Organic
Chemistry, Nankai University, Tianjin 300071,
China
| | - Zongxiu Nie
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Beijing Center for Mass Spectrometry, Beijing 100190, China
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47
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Ferin R, Pavão ML, Baptista J. Rapid, sensitive and simultaneous determination of ascorbic and uric acids in human plasma by ion-exclusion HPLC-UV. Clin Biochem 2013; 46:665-9. [DOI: 10.1016/j.clinbiochem.2013.01.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 12/20/2012] [Accepted: 01/13/2013] [Indexed: 12/16/2022]
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48
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Johnson RJ, Rivard C, Lanaspa MA, Otabachian-Smith S, Ishimoto T, Cicerchi C, Cheeke PR, Macintosh B, Hess T. Fructokinase, Fructans, Intestinal Permeability, and Metabolic Syndrome: An Equine Connection? J Equine Vet Sci 2013; 33:120-126. [PMID: 23439477 PMCID: PMC3576823 DOI: 10.1016/j.jevs.2012.05.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Fructose is a simple sugar present in honey and fruit, but can also exist as a polymer (fructans) in pasture grasses. Mammals are unable to metabolize fructans, but certain gram positive bacteria contain fructanases and can convert fructans to fructose in the gut. Recent studies suggest that fructose generated from bacteria, or directly obtained from the diet, can induce both increased intestinal permeability and features of metabolic syndrome, especially the development of insulin resistance. The development of insulin resistance is driven in part by the metabolism of fructose by fructokinase C in the liver, which results in oxidative stress in the hepatocyte. Similarly, the metabolism of fructose in the small bowel by intestinal fructokinase may lead to increased intestinal permeability and endotoxemia. While speculative, these observations raise the possibility that the mechanism by which fructans induce laminitis could involve intestinal and hepatic fructokinase. Further studies are indicated to determine the role of fructanases, fructose and fructokinase in equine metabolic syndrome and laminitis.
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Affiliation(s)
- Richard J Johnson
- Division of Renal Diseases and Hypertension, University of Colorado, Aurora, Colorado, USA
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A novel UPLC-MS-MS method for simultaneous determination of seven uremic retention toxins with cardiovascular relevance in chronic kidney disease patients. Anal Bioanal Chem 2013; 405:1937-47. [PMID: 23307120 DOI: 10.1007/s00216-012-6636-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 12/03/2012] [Accepted: 12/06/2012] [Indexed: 01/09/2023]
Abstract
Chronic kidney disease (CKD) is a devastating illness characterized by accumulation of uremic retention solutes in the body. The objective of this study was to develop and validate a simple, rapid, and robust UPLC-MS-MS method for simultaneous determination, in serum, of seven organic acid uremic retention toxins, namely uric acid (UA), hippuric acid (HA), indoxylsulfate (IS), p-cresylglucuronide (pCG), p-cresylsulfate (pCS), indole-3-acetic acid (IAA), and 3-carboxy-4-methyl-5-propyl-2-furanpropionic acid (CMPF). Isotopically labeled internal standards (d(5)-HA; 1,3-(15)N(2)-UA, and d(5)-IAA) were used to correct for variations in sample preparation and system performance. Separation on a C18 column was followed by negative electrospray ionization and tandem mass spectrometric detection. Accuracy was below the 15 % threshold. Within-day precision varied from 0.60 to 4.54 % and between-day precision was below 13.33 % for all compounds. The applicability of the method was evaluated by analyzing 78 serum samples originating both from healthy controls and from patients at different stages of CKD. These results were compared with those obtained by use of conventional HPLC-PDA-FLD methods. A good correlation was obtained between both methods for all compounds.
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50
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Brys M, Morel A, Forma E, Krzeslak A, Wilkosz J, Rozanski W, Olas B. Relationship of urinary isoprostanes to prostate cancer occurrence. Mol Cell Biochem 2013; 372:149-53. [PMID: 22983829 PMCID: PMC3506833 DOI: 10.1007/s11010-012-1455-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 09/05/2012] [Indexed: 12/15/2022]
Abstract
To estimate the oxidative stress in patients with prostate cancer and in a control group, we used the biomarker of lipid peroxidation-isoprostanes (8-isoPGF(2)) and the level of selected antioxidants (glucose and uric acid [UA]). The level of urinary isoprostanes was determined in patients and controls using an immunoassay kit according to the manufacturer's instruction. The levels of UA and glucose were also determined in serum by the use of UA Assay Kit and Glucose Assay Kit. We observed a statistically increased the level of isoprostanes in urine of patients with prostate cancer in compared with a control group. The concentration of tested antioxidants in blood from patients with prostate cancer was also higher than in healthy subjects. Moreover, our experiments indicate that the correlation between the increased amount of UA and the lipid peroxidation exists in prostate cancer patients (in all tested groups). Prostate cancer risk by urinary isoprostanes level was analyzed, and a positive association was found (relative risk for highest vs. lowest quartile of urinary isoprostanes = 1.6; 95 % confidence interval 1.2-2.4; p for trend = 0.03). We suggest that reactive oxygen species induce peroxidation of unsaturated fatty acid in patients with prostate cancer, and the level of isoprostanes may be used as a non-invasive marker for determination of oxidative stress. We also propose that UA may enhance the oxidative stress in patients with prostate cancer.
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Affiliation(s)
- Magdalena Brys
- Department of Cytobiochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Agnieszka Morel
- Department of General Biochemistry, Institute of Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Ewa Forma
- Department of Cytobiochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Anna Krzeslak
- Department of Cytobiochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Jacek Wilkosz
- 2nd Department of Urology, Medical University of Lodz, Pabianicka 62, 93-513 Lodz, Poland
| | - Waldemar Rozanski
- 2nd Department of Urology, Medical University of Lodz, Pabianicka 62, 93-513 Lodz, Poland
| | - Beata Olas
- Department of General Biochemistry, Institute of Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
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