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Rebersek M, Hribernik N, Markovic K, Markovic S, Valentinuzzi KU, Cemazar M, Zuliani T, Milacic R, Scancar J. Determination of copper and other trace elements in serum samples from patients with biliary tract cancers: prospective noninterventional nonrandomized clinical study protocol. Radiol Oncol 2024; 58:300-310. [PMID: 38553250 PMCID: PMC11165979 DOI: 10.2478/raon-2024-0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 03/09/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND Biliary tract cancers (BTCs) are usually diagnosed at an advanced stage, when the disease is incurable. Currently used tumor biomarkers have limited diagnostic value for BTCs, so there is an urgent need for sensitive and specific biomarkers for their earlier diagnosis. Deregulation of the homeostasis of trace elements is involved in the carcinogenesis of different cancers, including BTCs. The objective of the study is to determine/compare the total concentrations of copper (Cu), zinc (Zn) and iron (Fe) and the proportions of free Cu and Cu bound to ceruloplasmin (Cp) and the isotopic ratio of 65Cu/63Cu in serum samples from healthy volunteers and cancer patients using inductively coupled plasma-mass spectrometry-based methods (ICP-MS). PATIENTS AND METHODS In this prospective, noninterventional, nonrandomized study 20 patients and 20 healthy volunteers will be enrolled to identify serum Cu, Zn and Fe levels, Cu isotopic fractionation as a predictive biomarker of response to systemic therapy of BTCs, which will be evaluated by computed tomography. Newly developed analytical methods based on ICP-MS will be applied to metal-based biomarker research in oncology. CONCLUSIONS In the study the comparison of the total concentration of selected trace elements, the proportion of free Cu and Cu bound to Cp and the isotopic ratio of 65Cu/63Cu in serum samples from healthy volunteers and cancer patients will be conducted to provide the foundation for the development of a BTC cancer screening methodology and the data on their usability as a potential predictive biomarker for BTCs of response to systemic therapy.
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Affiliation(s)
- Martina Rebersek
- Department of Medical Oncology, Institute of Oncology Ljubljana, Ljubljana, Slovenia
- Medical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Nezka Hribernik
- Department of Medical Oncology, Institute of Oncology Ljubljana, Ljubljana, Slovenia
- Medical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | | | | | - Katja Ursic Valentinuzzi
- Department of Experimental Oncology, Institute of Oncology Ljubljana, Ljubljana, Slovenia
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Maja Cemazar
- Department of Experimental Oncology, Institute of Oncology Ljubljana, Ljubljana, Slovenia
- Faculty of Health Sciences, University of Primorska, Izola, Slovenia
| | - Tea Zuliani
- Jožef Stefan Institute, Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Radmila Milacic
- Jožef Stefan Institute, Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Janez Scancar
- Jožef Stefan Institute, Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
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2
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Cecchini Gualandi S, Di Palma T, Boni R. Analytical Validation of Two Assays for Equine Ceruloplasmin Ferroxidase Activity Assessment. Vet Sci 2023; 10:623. [PMID: 37888575 PMCID: PMC10611237 DOI: 10.3390/vetsci10100623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/20/2023] [Accepted: 10/14/2023] [Indexed: 10/28/2023] Open
Abstract
Ceruloplasmin (Cp) assessment in biological samples exploits the oxidase activity of this enzyme against several substrates, such as p-phenylenediamine (p-P), o-dianisidine (o-D) and, most recently, ammonium iron(II) sulfate (AIS). Once developed in humans, these assays are often used in veterinary medicine without appropriately optimizing in the animal species of interest. In this study, two assays using AIS and o-D as substrates have been compared and validated for Cp oxidase activity assessment in horse's plasma. The optimization of the assays was performed mainly by varying the buffer pH as well as the buffer and the substrate molar concentration. Under the best analytical conditions obtained, the horse blood serum samples were treated with sodium azide, a potent Cp inhibitor. In the o-D assay, 500 µM sodium azide treatment completely inhibits the enzymatic activity of Cp, whereas, using the AIS assay, a residual analytical signal was still present even at the highest (2000 µM) sodium azide concentration. Even though the analytical values obtained from these methods are well correlated, the enzymatic activity values significantly differ when expressed in Units L-1. A disagreement between these assays has also been detected with the Bland-Altman plot, showing a progressive discrepancy between methods with increasing analytical values.
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Affiliation(s)
- Stefano Cecchini Gualandi
- Department of Sciences, University of Basilicata, Campus Macchia Romana, 85100 Potenza, Italy; (T.D.P.); (R.B.)
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3
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Eren F, Koca Yozgat A, Firat Oğuz E, Neşelioğlu S, Firat R, Gürlek Gökçebay D, Yarali HN, Özbek NY, Erel Ö. A New Perspective for Potential Organ Damage Due to Iron-Mediated Oxidation in Thalassemia Major Patients. J Clin Med 2023; 12:jcm12062422. [PMID: 36983421 PMCID: PMC10052047 DOI: 10.3390/jcm12062422] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND The aim of this study is to develop new perspectives to prevent or reduce potential organ damage due to iron-mediated oxidation in thalassemia major patients. METHODS Seventy patients were included in this study. Blood samples were taken from the patients before and after transfusion. Total thiol, native thiol, disulfide, disulfide/native thiol percentage ratio, ischemia modified albumin (IMA), total antioxidant status (TAS), total oxidant status (TOS), and ferroxidase levels were determined. Additionally, undepleted thiol level (UTL) was determined as a new parameter associated with organ damage. RESULTS After transfusion, the levels of native thiol, total thiol, disulfide, TAS, ferroxidase, and TOS were higher, while the IMA levels and disulfide/native thiol percent ratio were lower. Significant correlations were found between antioxidant and oxidant tests before and after transfusion. Additionally, a negative correlation was found between the TOS and UTL levels of the patients measured before the transfusion. CONCLUSION In the present study, transfusion therapy increased both oxidation and the antioxidant levels. In addition, the term UTL has been introduced as a parameter that enables the determination of the oxidation level that may cause potential organ damage in transfusion-dependent thalassemia patients.
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Affiliation(s)
- Funda Eren
- Department of Medical Biochemistry Laboratory, Ankara Bilkent City Hospital, 06800 Ankara, Turkey
| | - Ayça Koca Yozgat
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, 06800 Ankara, Turkey
| | - Esra Firat Oğuz
- Department of Medical Biochemistry Laboratory, Ankara Bilkent City Hospital, 06800 Ankara, Turkey
| | - Salim Neşelioğlu
- Department of Medical Biochemistry, Yıldırım Beyazıt University, 06010 Ankara, Turkey
| | - Rıdvan Firat
- Department of Medical Biochemistry Laboratory, Ankara Bilkent City Hospital, 06800 Ankara, Turkey
| | - Dilek Gürlek Gökçebay
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, 06800 Ankara, Turkey
| | - Hüsniye Neşe Yarali
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, 06800 Ankara, Turkey
| | - Namık Yaşar Özbek
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, 06800 Ankara, Turkey
| | - Özcan Erel
- Department of Medical Biochemistry, Yıldırım Beyazıt University, 06010 Ankara, Turkey
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4
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Neşelioğlu S, Fırat Oğuz E, Erel Ö. Development of a New Colorimetric, Kinetic and Automated Ceruloplasmin Ferroxidase Activity Measurement Method. Antioxidants (Basel) 2022; 11:antiox11112187. [PMID: 36358559 PMCID: PMC9686494 DOI: 10.3390/antiox11112187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 11/09/2022] Open
Abstract
Background: Ceruloplasmin plays an important role in the regulation of iron metabolism. Ceruloplasmin is an acute-phase protein known to have many metabolic effects. Its activity increases during infection, inflammation, and compensation of oxidation. In the current study, our aim is to develop a new method for the measurement of ferroxidase activity without requiring any chromogen. Methods: Venous blood samples were collected into serum separator tubes. Ferric iron ions formed by the enzyme ferroxidase were measured, both manually and fully automatically, at the 415 nm wavelength without using chromogen. These results were compared to conventional ferroxidase measurement methods and to the immunoturbidimetric ceruloplasmin measurement method. Results: The detection limit of the new assay was 14.8 U/L. The upper limit of the linearity was 1380 U/L. Precision values were calculated for high, medium, and low levels of ferroxidase activity in serum pool. The coefficient of variation was <5% for each level. Conclusion: In the present method, chromogens are not used. With its considerably low cost and short reaction time, this method is able to provide fast results, can be performed easily, and makes accurate measurements.
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Affiliation(s)
- Salim Neşelioğlu
- Department of Biochemistry, Faculty of Medicine, Yıldırım Beyazıt University, Ankara 06800, Turkey
- Correspondence: ; Tel.: +90-506-787-62-45
| | - Esra Fırat Oğuz
- Clinical Biochemistry Laboratory, Ankara City Hospital, Ankara 06800, Turkey
| | - Özcan Erel
- Department of Biochemistry, Faculty of Medicine, Yıldırım Beyazıt University, Ankara 06800, Turkey
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Pekec T, Lewandowski J, Komur AA, Sobańska D, Guo Y, Świtońska-Kurkowska K, Małecki JM, Dubey AA, Pokrzywa W, Frankowski M, Figiel M, Ciosk R. Ferritin-mediated iron detoxification promotes hypothermia survival in Caenorhabditis elegans and murine neurons. Nat Commun 2022; 13:4883. [PMID: 35986016 PMCID: PMC9391379 DOI: 10.1038/s41467-022-32500-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 08/02/2022] [Indexed: 11/22/2022] Open
Abstract
How animals rewire cellular programs to survive cold is a fascinating problem with potential biomedical implications, ranging from emergency medicine to space travel. Studying a hibernation-like response in the free-living nematode Caenorhabditis elegans, we uncovered a regulatory axis that enhances the natural resistance of nematodes to severe cold. This axis involves conserved transcription factors, DAF-16/FoxO and PQM-1, which jointly promote cold survival by upregulating FTN-1, a protein related to mammalian ferritin heavy chain (FTH1). Moreover, we show that inducing expression of FTH1 also promotes cold survival of mammalian neurons, a cell type particularly sensitive to deterioration in hypothermia. Our findings in both animals and cells suggest that FTN-1/FTH1 facilitates cold survival by detoxifying ROS-generating iron species. We finally show that mimicking the effects of FTN-1/FTH1 with drugs protects neurons from cold-induced degeneration, opening a potential avenue to improved treatments of hypothermia. Strategies to improve cold resistance are of potential biomedical interest. Here the authors demonstrate that ferritin-mediated detoxification of iron, preventing the generation of reactive oxygen species, promotes cold survival in both Caenorhabditis elegans and cultured mammalian neurons.
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6
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Gundogan K, Yucesoy FS, Ozer NT, Temel S, Sahin S, Sahin GG, Sungur M, Esmaoglu A, Talih T, Yazici C, Griffith DP, Ziegler TR. Serum Micronutrient Levels in Critically III Patients Receiving Continuous Renal Replacement Therapy: A Prospective, Observational Study. JPEN J Parenter Enteral Nutr 2022; 46:1141-1148. [PMID: 35383966 DOI: 10.1002/jpen.2378] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/04/2022] [Accepted: 03/24/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND Acute kidney injury (AKI) treated with continuous renal replacement therapy (CRRT) may deplete micronutrient levels. Patients are also at risk for micronutrient depletion due to underlying illness(s), poor nutrient intake prior to intensive care unit (ICU) admission and/or increased requirements. We determined vitamin and trace element status before, during and after CRRT in critically ill patients. METHODS This prospective observational study performed in mixed medical and surgical ICU patients. Serial serum vitamin B6 and vitamin C concentrations were measured by HPLC and folic acid by ECLIA. Serum chromium, copper, selenium, and zinc were measured using ICP-MS. Serum ceruloplasmin was measured by the Erel method. RESULTS Fifty adult ICU patients with AKI were recruited. The median APACHE II score on ICU admission was high at 24.0 (6.0-33.0). The median days on CRRT was 2.0 (2.0-4.0) days. At baseline (within 10-15 minutes of CRRT initiation), serum vitamin C, selenium and zinc were below normal. Serum vitamin B6 levels at 72 hours on CRRT were significantly lower than at 24 hours (p=0.011). Serum vitamin C values fell significantly at 24 and 72 hours during CRRT (p=0.030 and p=0.001), respectively, and remained low 24 and 48 hours after CRRT was stopped (p=0.021). At baseline and during CRRT, 96% of participants had at least two or more micronutrient levels below the normal range. CONCLUSION Serum vitamin C, selenium and zinc concentrations were below the normal range at baseline. CRRT was associated with a significant further decrease in levels of vitamin C, selenium and zinc. CLINICAL RELEVANCY STATEMENT Critically ill patients who were experienced CRRT had serum vitamin C, selenium and zinc below the normal range during and after CRRT. Also, 96% of participants had at least two or more micronutrient levels below normal at baseline and during CRRT. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Kursat Gundogan
- Department of Internal Medicine, Division of Intensive Care, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Faruk S Yucesoy
- Department of Anesthesiology and Reanimation, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Nurhayat T Ozer
- Division of Clinical Nutrition, Erciyes University Health Sciences Institute, Kayseri, Turkey
| | - Sahin Temel
- Department of Internal Medicine, Division of Intensive Care, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Serap Sahin
- Division of Clinical Nutrition, Erciyes University Health Sciences Institute, Kayseri, Turkey
| | - Gulsah G Sahin
- Division of Clinical Nutrition, Erciyes University Health Sciences Institute, Kayseri, Turkey
| | - Murat Sungur
- Department of Internal Medicine, Division of Intensive Care, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Aliye Esmaoglu
- Department of Anesthesiology and Reanimation, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Tutkun Talih
- Department of General Surgery, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Cevat Yazici
- Department of Clinical Biochemistry, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Daniel P Griffith
- Department of Pharmaceutical Services, Emory University Hospital, Atlanta, Georgia, USA.,Nutrition and Metabolic Support Service, Emory University Hospital, Atlanta, Georgia, USA
| | - Thomas R Ziegler
- Nutrition and Metabolic Support Service, Emory University Hospital, Atlanta, Georgia, USA.,Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
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7
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The role of protein oxidation in the development of diabetic microvascular complications. North Clin Istanb 2021; 8:500-506. [PMID: 34909589 PMCID: PMC8630725 DOI: 10.14744/nci.2021.33341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 01/28/2021] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE The role of protein oxidation in the development of diabetic microvascular complications was investigated. METHODS In total, 266 participants were split into five groups: Group 1; diabetes mellitus for at least 10 years without any complications, Group 2; diabetic nephropathy, Group 3; diabetic neuropathy, Group 4; diabetic retinopathy, and Group 5; control group. Thiol, disulfide, ferroxidase, and ischemia-modified albumin (IMA) levels were analyzed in the serum. RESULTS Native thiol, total thiol, and native thiol/total thiol were lower in Group 4 than Groups 1, 3, and 5 (p<0.001). However, disulfide/native thiol and disulfide/total thiol were higher in Group 4 than all other groups (p<0.001). IMA was higher in Groups 3 and 4 than all other groups (p<0.001). Ferroxidase was lower in Groups 3 and 4 than Group 2 (p<0.001). CONCLUSION Thiol-disulfide homeostasis impairment in favor of disulfide may have a function in the progress of diabetic retinopathy. Furthermore, the disruptions of IMA and ferroxidase levels involve in the development of diabetic retinopathy and neuropathy.
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8
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Ulagesan S, Choi JW, Nam TJ, Choi YH. Characterization of recombinant protein ferritin from Pyropia yezoensis (rPyFer) and its biological activities. Food Sci Biotechnol 2020; 29:1501-1509. [PMID: 33088599 DOI: 10.1007/s10068-020-00821-8] [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: 03/04/2020] [Revised: 08/09/2020] [Accepted: 08/31/2020] [Indexed: 11/29/2022] Open
Abstract
Ferritins are iron-binding proteins that are basically participated in iron storage, detoxification, and immune response. In the present study, ferritin gene from the marine red algae Pyropia yezoensis was cloned into a pET21d expression vector. High-efficiency transformation was performed in Escherichia coli BL21, the recombinant protein was expressed by induction with 0.1 mM isopropyl-β-D-thiogalactoside and purified via ammonium sulfate precipitation, anion exchange and size exclusion chromatography. The purified recombinant ferritin from P. yezoensis (rPyFer) was characterized and analyzed for its antimicrobial activity against both Gram-negative and Gram-positive bacterial cultures and exhibited significant antibacterial activity against Gram-positive cultures. The recombinant protein was also analyzed for its iron-uptake and radical-scavenging activities; rPyFer exhibited significant iron-uptake activity at low concentrations, and its radical-scavenging activity increased in a dose-dependent manner. This research will contribute to the development of new therapeutic proteins from marine algae.
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Affiliation(s)
- Selvakumari Ulagesan
- Institute of Fisheries Sciences, Pukyong National University, Busan, 46041 Republic of Korea
| | - Jeong-Wook Choi
- Institute of Fisheries Sciences, Pukyong National University, Busan, 46041 Republic of Korea
| | - Taek-Jeong Nam
- Institute of Fisheries Sciences, Pukyong National University, Busan, 46041 Republic of Korea
| | - Youn-Hee Choi
- Institute of Fisheries Sciences, Pukyong National University, Busan, 46041 Republic of Korea.,Department of Marine Bio-materials and Aquaculture, Pukyong National University, 45, Yongso-ro, Nam-Gu, Busan, 48513 Republic of Korea
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9
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Ruddell RG, Lee A, Powell EE, Wilgen U, Ungerer JPJ. Unusual Iron and Copper Studies in a Patient with Liver Injury and Normocytic Anemia. Clin Chem 2020; 66:277-281. [PMID: 32040578 DOI: 10.1093/clinchem/hvz001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/09/2019] [Indexed: 11/14/2022]
Affiliation(s)
- Richard G Ruddell
- Department of Chemical Pathology, Pathology Queensland, Queensland Health, Brisbane, QLD, Australia
| | - Andrew Lee
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia.,University of Queensland, School of Medicine, Brisbane, QLD, Australia
| | - Elizabeth E Powell
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Woolloongabba, QLD, Australia.,Centre for Liver Disease Research, Translational Research Institute, School of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - Urs Wilgen
- Department of Chemical Pathology, Pathology Queensland, Queensland Health, Brisbane, QLD, Australia.,University of Queensland, School of Medicine, Brisbane, QLD, Australia
| | - Jacobus P J Ungerer
- Department of Chemical Pathology, Pathology Queensland, Queensland Health, Brisbane, QLD, Australia.,University of Queensland, School of Medicine, Brisbane, QLD, Australia
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10
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Woimant F, Djebrani-Oussedik N, Poujois A. New tools for Wilson's disease diagnosis: exchangeable copper fraction. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:S70. [PMID: 31179307 DOI: 10.21037/atm.2019.03.02] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Wilson's disease (WD) biochemical markers continue to evolve. Classical tests [serum copper, serum ceruloplasmin (Cp), urinary copper] have their own limits, and they are often insufficient to diagnose or exclude WD. So, calculated estimation of copper that is not bound to Cp has been proposed, but it is flawed. Therefore, we focused our research on a direct measurement of serum copper labile fraction. Exchangeable copper (CuEXC) offers a correct view of the free copper overload. It provides information on the spread and severity of WD. Relative exchangeable copper (REC) (percentage of exchangeable to total serum copper) that appreciates the toxic fraction of copper in blood is an excellent biomarker for WD diagnosis. These two tests are reliable and non-invasive. They give rapid answers for an appropriate diagnosis and make possible to start the treatment quickly without waiting for the result of the genetic tests. As early diagnosis and treatment are the keystones of successful management of patients with WD, different teams have already applied these tests in a routine framework to a large number of patients.
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Affiliation(s)
- France Woimant
- National Reference Centre for Wilson's Disease, AP-HP, Lariboisière University Hospital, Paris, France.,Neurology Department, AP-HP, Lariboisière University Hospital, Paris, France
| | - Nouzha Djebrani-Oussedik
- National Reference Centre for Wilson's Disease, AP-HP, Lariboisière University Hospital, Paris, France.,Toxicology Laboratory, AP-HP, Lariboisière University Hospital, Paris, France
| | - Aurélia Poujois
- National Reference Centre for Wilson's Disease, AP-HP, Lariboisière University Hospital, Paris, France.,Neurology Department, AP-HP, Lariboisière University Hospital, Paris, France
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