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Melo D, Ferreira F, Teles MJ, Porto G, Coimbra S, Rocha S, Santos-Silva A. Reticulocyte Antioxidant Enzymes mRNA Levels versus Reticulocyte Maturity Indices in Hereditary Spherocytosis, β-Thalassemia and Sickle Cell Disease. Int J Mol Sci 2024; 25:2159. [PMID: 38396832 PMCID: PMC10889157 DOI: 10.3390/ijms25042159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/05/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
The antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and peroxiredoxin 2 (Prx2) are particularly important in erythroid cells. Reticulocytes and other erythroid precursors may adapt their biosynthetic mechanisms to cell defects or to changes in the bone marrow environment. Our aim was to perform a comparative study of the mRNA levels of CAT, GPX1, PRDX2 and SOD1 in reticulocytes from healthy individuals and from patients with hereditary spherocytosis (HS), sickle cell disease (SCD) and β-thalassemia (β-thal), and to study the association between their transcript levels and the reticulocyte maturity indices. In controls, the enzyme mRNA levels were significantly correlated with reticulocyte maturity indices for all genes except for SOD1. HS, SCD and β-thal patients showed younger reticulocytes, with higher transcript levels of all enzymes, although with different patterns. β-thal and HS showed similar reticulocyte maturity, with different enzyme mRNA levels; SCD and HS, with different reticulocyte maturity, presented similar enzyme mRNA levels. Our data suggest that the transcript profile for these antioxidant enzymes is not entirely related to reticulocyte maturity; it appears to also reflect adaptive mechanisms to abnormal erythropoiesis and/or to altered erythropoietic environments, leading to reticulocytes with distinct antioxidant potential according to each anemia.
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Affiliation(s)
- Daniela Melo
- UCIBIO—Applied Molecular Biosciences Unit, Laboratory of Biochemistry, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal; (D.M.); (S.C.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal
| | - Fátima Ferreira
- Hematology Service, Centro Hospitalar e Universitário de São João, 4051-401 Porto, Portugal;
| | - Maria José Teles
- Clinical Pathology, Centro Hospitalar e Universitário de São João, 4051-401 Porto, Portugal;
- Imuno-Hemotherapy Service, Centro Hospitalar Universitário de Santo António, 4051-401 Porto, Portugal;
| | - Graça Porto
- Imuno-Hemotherapy Service, Centro Hospitalar Universitário de Santo António, 4051-401 Porto, Portugal;
- Center for Predictive and Preventive Genetics (CGPP)/Institute for Molecular and Cellular Biology (IBMC), 4051-401 Porto, Portugal
- Abel Salazar Institute of Biomedical Sciences (ICBAS), University of Porto, 4051-401 Porto, Portugal
| | - Susana Coimbra
- UCIBIO—Applied Molecular Biosciences Unit, Laboratory of Biochemistry, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal; (D.M.); (S.C.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal
- 1H-TOXRUN—One Health Toxicology Research Unit, University Institute of Health Sciences, CESPU, CRL, 4585-116 Gandra, Portugal
| | - Susana Rocha
- UCIBIO—Applied Molecular Biosciences Unit, Laboratory of Biochemistry, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal; (D.M.); (S.C.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal
| | - Alice Santos-Silva
- UCIBIO—Applied Molecular Biosciences Unit, Laboratory of Biochemistry, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal; (D.M.); (S.C.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4051-401 Porto, Portugal
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Duarte TL, Lopes M, Oliveira M, Santos AG, Vasco C, Reis JP, Antunes AR, Gonçalves A, Chacim S, Oliveira C, Porto B, Teles MJ, Moreira AC, Silva AMN, Schwessinger R, Drakesmith H, Henrique R, Porto G, Duarte D. Iron overload induces dysplastic erythropoiesis and features of myelodysplasia in Nrf2-deficient mice. Leukemia 2024; 38:96-108. [PMID: 37857886 DOI: 10.1038/s41375-023-02067-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 10/04/2023] [Accepted: 10/09/2023] [Indexed: 10/21/2023]
Abstract
Iron overload (IOL) is hypothesized to contribute to dysplastic erythropoiesis. Several conditions, including myelodysplastic syndrome, thalassemia and sickle cell anemia, are characterized by ineffective erythropoiesis and IOL. Iron is pro-oxidant and may participate in the pathophysiology of these conditions by increasing genomic instability and altering the microenvironment. There is, however, lack of in vivo evidence demonstrating a role of IOL and oxidative damage in dysplastic erythropoiesis. NRF2 transcription factor is the master regulator of antioxidant defenses, playing a crucial role in the cellular response to IOL in the liver. Here, we crossed Nrf2-/- with hemochromatosis (Hfe-/-) or hepcidin-null (Hamp1-/-) mice. Double-knockout mice developed features of ineffective erythropoiesis and myelodysplasia including macrocytic anemia, splenomegaly, and accumulation of immature dysplastic bone marrow (BM) cells. BM cells from Nrf2/Hamp1-/- mice showed increased in vitro clonogenic potential and, upon serial transplantation, recipients disclosed cytopenias, despite normal engraftment, suggesting defective differentiation. Unstimulated karyotype analysis showed increased chromosome instability and aneuploidy in Nrf2/Hamp1-/- BM cells. In HFE-related hemochromatosis patients, NRF2 promoter SNP rs35652124 genotype TT (predicted to decrease NRF2 expression) associated with increased MCV, consistent with erythroid dysplasia. Our results suggest that IOL induces ineffective erythropoiesis and dysplastic hematologic features through oxidative damage in Nrf2-deficient cells.
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Affiliation(s)
- Tiago L Duarte
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.
| | - Marta Lopes
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Mónica Oliveira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Ana G Santos
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Catarina Vasco
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Joana P Reis
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Ana Rita Antunes
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Andreia Gonçalves
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Sérgio Chacim
- Serviço de Hematologia e Transplantação de Medula Óssea, Instituto Português de Oncologia do Porto Francisco Gentil, E.P.E. (IPO Porto), Porto, Portugal
| | - Cláudia Oliveira
- Laboratório de Citogenética, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Beatriz Porto
- Laboratório de Citogenética, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Maria José Teles
- Departmento de Patologia Clínica, Centro Hospitalar Universitário São João, Porto, Portugal
| | - Ana C Moreira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - André M N Silva
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- LAQV-REQUIMTE, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Ron Schwessinger
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
- MRC WIMM Centre for Computational Biology, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Hal Drakesmith
- MRC Translational Immune Discovery Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Rui Henrique
- Serviço de Anatomia Patológica, IPO Porto, Porto, Portugal
- Departamento de Patologia e Imunologia Molecular, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
| | - Graça Porto
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Departamento de Patologia e Imunologia Molecular, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, Porto, Portugal
- Serviço de Imuno-hemoterapia, Centro Hospitalar Universitário de Santo António (CHUdSA), Porto, Portugal
| | - Delfim Duarte
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.
- Serviço de Hematologia e Transplantação de Medula Óssea, Instituto Português de Oncologia do Porto Francisco Gentil, E.P.E. (IPO Porto), Porto, Portugal.
- Departmento de Biomedicina, Faculdade de Medicina da Universidade do Porto (FMUP), Porto, Portugal.
- P.CCC - Porto Comprehensive Cancer Center Raquel Seruca, Porto, Portugal.
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Romero‐Cortadellas L, Venturi V, Martín‐Sánchez JC, Toska K, Prince D, Butzeck B, Porto G, Milman NT, Committee HIS, Sánchez M. Haemochromatosis patients' research priorities: Towards an improved quality of life. Health Expect 2023; 26:2293-2301. [PMID: 37503783 PMCID: PMC10632644 DOI: 10.1111/hex.13830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/16/2023] [Accepted: 07/18/2023] [Indexed: 07/29/2023] Open
Abstract
BACKGROUND Chronic diseases are associated with a range of functional and psychosocial consequences that can adversely affect patients' quality of life (QoL). Haemochromatosis (HC) is a genetically heterogeneous disorder characterized by chronic iron overload that can ultimately lead to multiple organ dysfunction. Clinical diagnosis remains challenging due to the nonspecificity of symptoms and a lack of confirmatory genotyping in a substantial proportion of patients. Illness perception among HC patients has not been extensively investigated, lacking relevant information on how to improve their QoL. METHODS We present the results of the first worldwide survey conducted in nearly 1500 HC respondents, in which we collected essential demographic information and identified the aspects that concern HC patients the most. RESULTS Out of all the participants, 45.3% (n = 676) voiced their concern about physical and psychological consequences such as HC-related arthropathies, which can ultimately affect their social functioning. A similar proportion of patients (n = 635, 42.5%) also consider that better-informed doctors are key for improved HC disease management. Taking a patient-centred approach, we expose differences in patients' disease perspective by social and economic influences. CONCLUSIONS We identify potential targets to improve patients' health-related QoL and reflect on strategic measures to foster gender equity in access to health resources. Finally, we make a call for a highly coordinated effort across a range of public policy areas to empower participants in the HC research process and design. PATIENT OR PUBLIC CONTRIBUTION Nearly 1500 patients with hereditary HC responded to an anonymized online survey in which research and clinical priorities were addressed regarding this chronic and rare disease.
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Affiliation(s)
- Lídia Romero‐Cortadellas
- Department of Basic Sciences, Iron metabolism: Regulation and DiseasesUniversitat Internacional de Catalunya (UIC)Sant Cugat del VallèsBarcelonaSpain
| | - Veronica Venturi
- Department of Basic Sciences, Iron metabolism: Regulation and DiseasesUniversitat Internacional de Catalunya (UIC)Sant Cugat del VallèsBarcelonaSpain
| | - Juan Carlos Martín‐Sánchez
- Group of Evaluation of Health Determinants and Health Policies, Department of Basic SciencesUniversitat Internacional de CatalunyaSant Cugat del VallèsSpain
| | - Ketil Toska
- Norwegian Haemochromatosis AssociationBergenNorway
| | - Dianne Prince
- Haemochromatosis AustraliaMeridan PlainsQueenslandAustralia
| | - Barbara Butzeck
- Hämochromatose‐Vereinigung Deutschland e.V. HVDEuropean Federation of Associations of Patients with Haemochromatosis (EFAPH)HattingenGermany
| | - Graça Porto
- i3S—Instituto de Investigação e Inovação em SaúdeUniversidade do PortoPortoPortugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar.Universidade do PortoPortoPortugal
| | | | | | - Mayka Sánchez
- Department of Basic Sciences, Iron metabolism: Regulation and DiseasesUniversitat Internacional de Catalunya (UIC)Sant Cugat del VallèsBarcelonaSpain
- BloodGenetics S.L. Diagnostics in Inherited Blood DiseasesEsplugues de LlobregatSpain
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Zoller H, Schaefer B, Vanclooster A, Griffiths B, Bardou-Jacquet E, Corradini E, Porto G, Ryan J, Cornberg M. Corrigendum to "EASL Clinical Practice Guidelines on haemochromatosis" [J Hepatol 2022 (77) 479-502]. J Hepatol 2023; 79:1341. [PMID: 37770291 DOI: 10.1016/j.jhep.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
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Zoller H, Schaefer B, Vanclooster A, Griffiths B, Bardou-Jacquet E, Corradini E, Porto G, Ryan J, Cornberg M. EASL Clinical Practice Guidelines on haemochromatosis. J Hepatol 2022; 77:479-502. [PMID: 35662478 DOI: 10.1016/j.jhep.2022.03.033] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 03/29/2022] [Indexed: 12/15/2022]
Abstract
Haemochromatosis is characterised by elevated transferrin saturation (TSAT) and progressive iron loading that mainly affects the liver. Early diagnosis and treatment by phlebotomy can prevent cirrhosis, hepatocellular carcinoma, diabetes, arthropathy and other complications. In patients homozygous for p.Cys282Tyr in HFE, provisional iron overload based on serum iron parameters (TSAT >45% and ferritin >200 μg/L in females and TSAT >50% and ferritin >300 μg/L in males and postmenopausal women) is sufficient to diagnose haemochromatosis. In patients with high TSAT and elevated ferritin but other HFE genotypes, diagnosis requires the presence of hepatic iron overload on MRI or liver biopsy. The stage of liver fibrosis and other end-organ damage should be carefully assessed at diagnosis because they determine disease management. Patients with advanced fibrosis should be included in a screening programme for hepatocellular carcinoma. Treatment targets for phlebotomy are ferritin <50 μg/L during the induction phase and <100 μg/L during the maintenance phase.
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Girelli D, Busti F, Brissot P, Cabantchik I, Muckenthaler MU, Porto G. Hemochromatosis classification: update and recommendations by the BIOIRON Society. Blood 2022; 139:3018-3029. [PMID: 34601591 PMCID: PMC11022970 DOI: 10.1182/blood.2021011338] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 09/05/2021] [Indexed: 12/15/2022] Open
Abstract
Hemochromatosis (HC) is a genetically heterogeneous disorder in which uncontrolled intestinal iron absorption may lead to progressive iron overload (IO) responsible for disabling and life-threatening complications such as arthritis, diabetes, heart failure, hepatic cirrhosis, and hepatocellular carcinoma. The recent advances in the knowledge of pathophysiology and molecular basis of iron metabolism have highlighted that HC is caused by mutations in at least 5 genes, resulting in insufficient hepcidin production or, rarely, resistance to hepcidin action. This has led to an HC classification based on different molecular subtypes, mainly reflecting successive gene discovery. This scheme was difficult to adopt in clinical practice and therefore needs revision. Here we present recommendations for unambiguous HC classification developed by a working group of the International Society for the Study of Iron in Biology and Medicine (BIOIRON Society), including both clinicians and basic scientists during a meeting in Heidelberg, Germany. We propose to deemphasize the use of the molecular subtype criteria in favor of a classification addressing both clinical issues and molecular complexity. Ferroportin disease (former type 4a) has been excluded because of its distinct phenotype. The novel classification aims to be of practical help whenever a detailed molecular characterization of HC is not readily available.
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Affiliation(s)
- Domenico Girelli
- Department of Medicine, Section of Internal Medicine, EuroBloodNet Center, University of Verona and Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Fabiana Busti
- Department of Medicine, Section of Internal Medicine, EuroBloodNet Center, University of Verona and Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Pierre Brissot
- INSERM, Univ-Rennes, Institut National de la Recherche Agronomique, Unité Mixte de Recherche 1241, Institut NuMeCan, Rennes, France
| | - Ioav Cabantchik
- Alexander Silberman Institute of Life Sciences, Hebrew University, Jerusalem, Israel
| | - Martina U. Muckenthaler
- Department of Pediatric Oncology, Hematology, and Immunology and Molecular Medicine Partnership Unit, University of Heidelberg, Heidelberg, Germany
- Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Translational Lung Research Center, German Center for Lung Research, Heidelberg, Germany
- German Centre for Cardiovascular Research, Partner Site Heidelberg, Mannheim, Germany
| | - Graça Porto
- Institute for Molecular and Cell Biology, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Clinical Hematology, Santo António Hospital, Porto University, Porto, Portugal
| | - on behalf of the Nomenclature Committee of the International Society for the Study of Iron in Biology and Medicine (BIOIRON Society)
- Department of Medicine, Section of Internal Medicine, EuroBloodNet Center, University of Verona and Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
- INSERM, Univ-Rennes, Institut National de la Recherche Agronomique, Unité Mixte de Recherche 1241, Institut NuMeCan, Rennes, France
- Alexander Silberman Institute of Life Sciences, Hebrew University, Jerusalem, Israel
- Department of Pediatric Oncology, Hematology, and Immunology and Molecular Medicine Partnership Unit, University of Heidelberg, Heidelberg, Germany
- Molecular Medicine Partnership Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Translational Lung Research Center, German Center for Lung Research, Heidelberg, Germany
- German Centre for Cardiovascular Research, Partner Site Heidelberg, Mannheim, Germany
- Institute for Molecular and Cell Biology, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Clinical Hematology, Santo António Hospital, Porto University, Porto, Portugal
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7
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Buerkli S, Salvioni L, Koller N, Zeder C, Teles MJ, Porto G, Habermann JH, Dubach IL, Vallelian F, Frey BM, Moretti D, Baumgartner J, Zimmermann MB. The effect of a natural polyphenol supplement on iron absorption in adults with hereditary hemochromatosis. Eur J Nutr 2022; 61:2967-2977. [PMID: 35320401 PMCID: PMC9363374 DOI: 10.1007/s00394-022-02829-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 02/04/2022] [Indexed: 11/29/2022]
Abstract
Objectives We developed a natural polyphenol supplement that strongly chelates iron in vitro and assessed its effect on non-heme iron absorption in patients with hereditary hemochromatosis (HH). Methods We performed in vitro iron digestion experiments to determine iron precipitation by 12 polyphenol-rich dietary sources, and formulated a polyphenol supplement (PPS) containing black tea powder, cocoa powder and grape juice extract. In a multi-center, single-blind, placebo-controlled cross-over study, we assessed the effect of the PPS on iron absorption from an extrinsically labelled test meal and test drink in patients (n = 14) with HH homozygous for the p.C282Y variant in the HFE gene. We measured fractional iron absorption (FIA) as stable iron isotope incorporation into erythrocytes. Results Black tea powder, cocoa powder and grape juice extract most effectively precipitated iron in vitro. A PPS mixture of these three extracts precipitated ~ 80% of iron when 2 g was added to a 500 g iron solution containing 20 µg Fe/g. In the iron absorption study, the PPS reduced FIA by ~ 40%: FIA from the meal consumed with the PPS was lower (3.01% (1.60, 5.64)) than with placebo (5.21% (3.92, 6.92)) (p = 0.026)), and FIA from the test drink with the PPS was lower (10.3% (7.29 14.6)) than with placebo (16.9% (12.8 22.2)) (p = 0.002). Conclusion Our results indicate that when taken with meals, this natural PPS can decrease dietary iron absorption, and might thereby reduce body iron accumulation and the frequency of phlebotomy in patients with HH. Trial registry: clinicaltrials.gov (registration date: 9.6.2019, NCT03990181). Supplementary Information The online version contains supplementary material available at 10.1007/s00394-022-02829-8.
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Affiliation(s)
- Simone Buerkli
- Laboratory of Human Nutrition, Institute of Food Nutrition and Health, Department of Health Science and Technology, Swiss Federal Institute of Technology (ETH Zurich), LFV D27.2, Schmelzbergstrasse 7, CH8092, Zurich, Switzerland.
| | - Laura Salvioni
- Laboratory of Human Nutrition, Institute of Food Nutrition and Health, Department of Health Science and Technology, Swiss Federal Institute of Technology (ETH Zurich), LFV D27.2, Schmelzbergstrasse 7, CH8092, Zurich, Switzerland
| | - Natalie Koller
- Laboratory of Human Nutrition, Institute of Food Nutrition and Health, Department of Health Science and Technology, Swiss Federal Institute of Technology (ETH Zurich), LFV D27.2, Schmelzbergstrasse 7, CH8092, Zurich, Switzerland
| | - Christophe Zeder
- Laboratory of Human Nutrition, Institute of Food Nutrition and Health, Department of Health Science and Technology, Swiss Federal Institute of Technology (ETH Zurich), LFV D27.2, Schmelzbergstrasse 7, CH8092, Zurich, Switzerland
| | - Maria José Teles
- Clinical Pathology, S. João University Hospital Center, Porto, Portugal
| | - Graça Porto
- Clinical Hematology, Santo António Hospital, Porto University Hospital Center (CHUP), Porto, Portugal.,Abel Salazar Institute for Biomedical Sciences (ICBAS), Porto, Portugal.,Institute of Research and Innovation in Health Sciences (i3S) of the University of Porto, Porto, Portugal
| | | | - Irina Léa Dubach
- Division of Internal Medicine, University Hospital of Zurich, Zurich, Switzerland
| | - Florence Vallelian
- Division of Internal Medicine, University Hospital of Zurich, Zurich, Switzerland
| | - Beat M Frey
- Blood Transfusion Service, Swiss Red Cross, Schlieren, Switzerland
| | - Diego Moretti
- Laboratory of Human Nutrition, Institute of Food Nutrition and Health, Department of Health Science and Technology, Swiss Federal Institute of Technology (ETH Zurich), LFV D27.2, Schmelzbergstrasse 7, CH8092, Zurich, Switzerland.,Department of Health, Swiss Distance University of Applied Sciences, Regensdorf/Zurich, Switzerland
| | - Jeannine Baumgartner
- Laboratory of Human Nutrition, Institute of Food Nutrition and Health, Department of Health Science and Technology, Swiss Federal Institute of Technology (ETH Zurich), LFV D27.2, Schmelzbergstrasse 7, CH8092, Zurich, Switzerland
| | - Michael B Zimmermann
- Laboratory of Human Nutrition, Institute of Food Nutrition and Health, Department of Health Science and Technology, Swiss Federal Institute of Technology (ETH Zurich), LFV D27.2, Schmelzbergstrasse 7, CH8092, Zurich, Switzerland
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8
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Moreira AC, Teles MJ, Silva T, Bento CM, Alves IS, Pereira L, Guimarães JT, Porto G, Oliveira P, Gomes MS. Iron Related Biomarkers Predict Disease Severity in a Cohort of Portuguese Adult Patients during COVID-19 Acute Infection. Viruses 2021; 13:v13122482. [PMID: 34960751 PMCID: PMC8703662 DOI: 10.3390/v13122482] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 02/07/2023] Open
Abstract
Large variability in COVID-19 clinical progression urges the need to find the most relevant biomarkers to predict patients' outcomes. We evaluated iron metabolism and immune response in 303 patients admitted to the main hospital of the northern region of Portugal with variable clinical pictures, from September to November 2020. One hundred and twenty-seven tested positive for SARS-CoV-2 and 176 tested negative. Iron-related laboratory parameters and cytokines were determined in blood samples collected soon after admission. Demographic data, comorbidities and clinical outcomes were recorded. Patients were assigned into five groups according to severity. Serum iron and transferrin levels at admission were lower in COVID-19-positive than in COVID-19-negative patients. The levels of interleukin (IL)-6 and monocyte chemoattractant protein 1 (MCP-1) were increased in COVID-19-positive patients. The lowest serum iron and transferrin levels at diagnosis were associated with the worst outcomes. Iron levels negatively correlated with IL-6 and higher levels of this cytokine were associated with a worse prognosis. Serum ferritin levels at diagnosis were higher in COVID-19-positive than in COVID-19-negative patients. Serum iron is the simplest laboratory test to be implemented as a predictor of disease progression in COVID-19-positive patients.
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Affiliation(s)
- Ana C. Moreira
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (A.C.M.); (M.J.T.); (T.S.); (C.M.B.); (I.S.A.); (L.P.); (G.P.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal;
| | - Maria Jose Teles
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (A.C.M.); (M.J.T.); (T.S.); (C.M.B.); (I.S.A.); (L.P.); (G.P.)
- CHUSJ—Centro Hospitalar Universitário São João, 4200-319 Porto, Portugal;
- ISPUP-EPIUnit—Instituto de Saúde Pública da Universidade do Porto, 4050-091 Porto, Portugal
| | - Tânia Silva
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (A.C.M.); (M.J.T.); (T.S.); (C.M.B.); (I.S.A.); (L.P.); (G.P.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal;
| | - Clara M. Bento
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (A.C.M.); (M.J.T.); (T.S.); (C.M.B.); (I.S.A.); (L.P.); (G.P.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- MCBiology—Programa Doutoral em Biologia Molecular e Celular, Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto, 4200-135 Porto, Portugal
| | - Inês Simões Alves
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (A.C.M.); (M.J.T.); (T.S.); (C.M.B.); (I.S.A.); (L.P.); (G.P.)
| | - Luisa Pereira
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (A.C.M.); (M.J.T.); (T.S.); (C.M.B.); (I.S.A.); (L.P.); (G.P.)
- IPATIMUP—Instituto de Patologia e Imunologia Molecular da Universidade do Porto, 4200-135 Porto, Portugal
| | - João Tiago Guimarães
- CHUSJ—Centro Hospitalar Universitário São João, 4200-319 Porto, Portugal;
- ISPUP-EPIUnit—Instituto de Saúde Pública da Universidade do Porto, 4050-091 Porto, Portugal
- FMUP—Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal
| | - Graça Porto
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (A.C.M.); (M.J.T.); (T.S.); (C.M.B.); (I.S.A.); (L.P.); (G.P.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal;
- CHPorto—Centro Hospitalar do Porto, 4099-001 Porto, Portugal
| | - Pedro Oliveira
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal;
- ISPUP-EPIUnit—Instituto de Saúde Pública da Universidade do Porto, 4050-091 Porto, Portugal
| | - Maria Salomé Gomes
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (A.C.M.); (M.J.T.); (T.S.); (C.M.B.); (I.S.A.); (L.P.); (G.P.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal;
- Correspondence:
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9
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Ferreira A, Duarte T, Marques S, Costa P, Neves S, dos Santos T, Granja P, Porto G. Iron triggers the early stages of cartilage degeneration in vitro: The role of articular chondrocytes. Osteoarthritis and Cartilage Open 2021; 3:100145. [DOI: 10.1016/j.ocarto.2021.100145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 02/15/2021] [Indexed: 12/13/2022] Open
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10
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Roxo L, Porto G, Perelman J. Combining jobs and motherhood: is it worse when raising children alone? J Public Health (Oxf) 2021; 44:507-515. [PMID: 33870411 DOI: 10.1093/pubmed/fdab048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 02/10/2021] [Accepted: 02/12/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Paid employment has been shown to benefit childless women's health, while employed mothers experience poorer health, and more pronounced fatigue. This study measures the association between job characteristics and the health and well-being of employed mothers and the differential susceptibility to job characteristics between coupled and single-parent mothers. METHODS We used data from the 5th Portuguese National Health Survey from 1649 employed women (aged 25-54) living with a child under 16. We modelled depression (assessed by the Personal Health Questionnaire-8) and self-reported health as a function of job characteristics, adding interaction terms to compare coupled and single-parent mothers, using logistic regressions. RESULTS Working part-time was associated with depression (odds ratio (OR) = 3.39, 95% confidence interval (CI) = 3.31-3.48) and less-than-good health (OR = 1.28, 95%CI = 1.26-1.31), compared to working full time. Compared to high-skill jobs, the likelihood for depression among low-skill occupations was lower among coupled mothers (OR = 0.25, 95%CI = 0.24-0.26), and higher among single-parent mothers (OR = 1.75, 95%CI = 1.54-1.99). Unstable jobs were associated with depression among coupled mothers. CONCLUSIONS Part-time jobs are detrimental for mothers' mental health, but high-skilled jobs are protective for single-parent mothers. Part-time and unstable jobs are linked to poorer self-reported health among coupled mothers. Results question the gendered arrangements that may face employed coupled mothers.
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Affiliation(s)
- L Roxo
- NOVA National School of Public Health, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal
| | - G Porto
- NOVA National School of Public Health, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal
| | - J Perelman
- NOVA National School of Public Health, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal.,Public Health Research Centre, NOVA National School of Public Health, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal
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11
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Monte F, Garrido M, Pereira Guedes T, Reis J, Porto G, Pedroto I. Hemochromatosis and Xeroderma Pigmentosum: Two (Un)Suspicious Neighbors. GE Port J Gastroenterol 2021; 29:38-44. [DOI: 10.1159/000513587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 10/19/2020] [Indexed: 11/19/2022]
Abstract
A 51-year-old woman, clinically diagnosed with <i>Xeroderma pigmentosum</i> (XP), showed abnormalities in liver enzymes, high ferritin and transferrin saturation levels, with ultrasonographic features of chronic liver disease, in addition to skin hyperpigmentation. Genetic testing confirmed the clinical hypothesis of hereditary hemochromatosis (HH). Due to the known proximity of HFE (6p22.2) and POLH (6p21.1) genes, accountable for HH and the XP-V variant, respectively, a genetic test was offered and a rare variant of the POLH gene was identified. We report the first confirmed case, to our knowledge, of a patient diagnosed both with XP and HH, in whom two mutated neighbor genes – POLH and HFE – were identified, possibly the result of genetic linkage.
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12
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Vinchi F, Porto G, Simmelbauer A, Altamura S, Garbowski M, Silva A, Spaich S, Seide S, Sparla R, Hentze M, Muckenthaler M. New insights into the molecular mechanisms underlying the pro-atherosclerotic and vasculo-toxic effect of iron. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Roxo L, Porto G, Perelman J. Combining jobs and motherhood: is it worse when growing children alone? Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.1118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Women combining paid job and motherhood may experience a poorer health status than those childless. This risk is expectedly higher among lone mothers due to their greater emotional, social, and economic vulnerability. This study aims to assess the impact of employment characteristics on the health of working mothers and to understand differences between lone and coupled mothers.
Methods
We used data from the 5th Portuguese National Health Survey from employed women (N = 1,649) aged 25-55 living with a child (<16). We modelled depression (assessed by the Personal Health Questionnaire-8) and less-than-good self-reported health as a function of employment variables (part-time job; self-employment; instable job situation; skill level and sector of activity) using logistic regressions, adjusting for age, family variables, socioeconomic status, and social support. Interaction terms assessed differences between lone and coupled mothers.
Results
Women in part-time (OR = 3.04, 95%CI=2.97-3.11), high-skilled jobs (OR = 3.57, 95%CI=1.30-1.38), and self-employed (OR = 1.34, 95%CI=1.30-1.38) had higher odds for depression, compared to those working in low-skilled, full time and not self-employed jobs. Less-than-good health was also more likely among those working part-time (OR = 1.34, 95%CI=1.31-1.36) and self-employed (OR = 1.34, 95%CI=1.31-1.37). Mothers' mental health disadvantage was amplified when alone regarding self-employment and part-time jobs.
Conclusions
Employed mothers' physical and mental health may be harmed by part-time jobs, self-employment, and working in more differentiated jobs. Employed lone mothers may experience greater risks than coupled mothers.
Key messages
Part-time, high-differentiated jobs or self-employment may harm the physical and mental health of working mothers. Lone mothers are disproportionately impacted by these employment characteristics.
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Affiliation(s)
- L Roxo
- NOVA National School of Public Health, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - G Porto
- NOVA National School of Public Health, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - J Perelman
- NOVA National School of Public Health, Universidade NOVA de Lisboa, Lisbon, Portugal
- NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa, Lisbon, Portugal
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14
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Barton JC, Barton JC, Cruz E, Teles MJ, Guimarães JT, Porto G. Chromosome 6p SNP microhaplotypes and IgG3 levels in hemochromatosis probands with HFE p.C282Y homozygosity. Blood Cells Mol Dis 2020; 85:102461. [PMID: 32623342 DOI: 10.1016/j.bcmd.2020.102461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Subnormal IgG1 or IgG3 levels occurred in 30% of hemochromatosis probands with HFE p.C282Y homozygosity and were concordant in HLA-identical siblings. We sought to identify factors associated with IgG subclasses in Alabama probands with p.C282Y homozygosity evaluated for 500 kb microhaplotypes AAT and GGG defined by SNPs in chromosome 6p genes PGBD1, ZNF193, and ZNF165. In regressions on IgG subclasses, we used: age; sex; GGG (dichotomous); iron removed to achieve depletion; CD8+ T-lymphocytes; and other IgG subclasses. Among 49 probands, AAT and GGG occurred in 95.9% and 16.3%, respectively. Thirteen probands (26.5%) had subnormal IgG1; 11 probands (22.4%) had subnormal IgG3. Mean IgG3 was higher in probands with than without GGG (75 mg/dL [95% confidence interval 63, 89] vs. 58 mg/dL [49, 71], respectively; p = 0.0321). Regression on IgG3 revealed: GGG positivity (p = 0.0106); and IgG1 (p = 0.0015). In a replication cohort of 22 Portugal probands with p.C282Y homozygosity, mean IgG3 was higher in probands with than without GGG (46 ± 16 vs. 31 ± 12 mg/dL, respectively; p = 0.0410). We conclude that mean IgG3 levels are higher in hemochromatosis probands with p.C282Y homozygosity with chromosome 6p microhaplotype GGG than in probands homozygous for microhaplotype AAT.
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Affiliation(s)
- James C Barton
- Southern Iron Disorders Center, Birmingham, AL, USA; Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
| | | | - Eugénia Cruz
- Institute for Molecular and Cell Biology (IBMC), i3S (Instituto de Investigação e Inovação em Saúde), Universidade do Porto, Porto, Portugal; Clinical Hematology, Santo António Hospital - Porto University Hospital Center (CHUP), Porto, Portugal.
| | - Maria José Teles
- Clinical Pathology, S. João University Hospital Center, Porto, Portugal; EPI Unit, Institute of Public Health and Biomedicine (ISPUP), University of Porto, Porto, Portugal; Faculty of Medicine, University of Porto, Porto, Portugal.
| | - João T Guimarães
- Clinical Pathology, S. João University Hospital Center, Porto, Portugal; EPI Unit, Institute of Public Health and Biomedicine (ISPUP), University of Porto, Porto, Portugal; Faculty of Medicine, University of Porto, Porto, Portugal.
| | - Graça Porto
- Institute for Molecular and Cell Biology (IBMC), i3S (Instituto de Investigação e Inovação em Saúde), Universidade do Porto, Porto, Portugal; Clinical Hematology, Santo António Hospital - Porto University Hospital Center (CHUP), Porto, Portugal; Molecular Pathology and Immunology, Abel Salazar Institute for Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal.
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15
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Ganz T, Aronoff GR, Gaillard CAJM, Goodnough LT, Macdougall IC, Mayer G, Porto G, Winkelmayer WC, Wish JB. Iron Administration, Infection, and Anemia Management in CKD: Untangling the Effects of Intravenous Iron Therapy on Immunity and Infection Risk. Kidney Med 2020; 2:341-353. [PMID: 32734254 PMCID: PMC7380433 DOI: 10.1016/j.xkme.2020.01.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Patients with chronic kidney disease (CKD) are at increased risk for infection, attributable to immune dysfunction, increased exposure to infectious agents, loss of cutaneous barriers, comorbid conditions, and treatment-related factors (eg, hemodialysis and immunosuppressant therapy). Because iron plays a vital role in pathogen reproduction and host immunity, it is biologically plausible that intravenous iron therapy and/or iron deficiency influence infection risk in CKD. Available data from preclinical experiments, observational studies, and randomized controlled trials are summarized to explore the interplay between intravenous iron and infection risk among patients with CKD, particularly those receiving maintenance hemodialysis. The current evidence base, including data from a recent randomized controlled trial, suggests that proactive judicious use of intravenous iron (in a manner that minimizes the accumulation of non-transferrin-bound iron) beneficially replaces iron stores while avoiding a clinically relevant effect on infection risk. In the absence of an urgent clinical need, intravenous iron therapy should be avoided in patients with active infection. Although serum ferritin concentration and transferrin saturation can help guide clinical decision making about intravenous iron therapy, definition of an optimal iron status and its precise determination in individual patients remain clinically challenging in CKD and warrant additional study.
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Affiliation(s)
- Tomas Ganz
- Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA
| | | | | | - Lawrence T Goodnough
- Department of Pathology, Stanford University, Stanford, CA.,Department of Medicine (Hematology), Stanford University, Stanford, CA
| | - Iain C Macdougall
- Department of Renal Medicine, King's College Hospital, London, United Kingdom
| | - Gert Mayer
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Innsbruck, Austria
| | - Graça Porto
- Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal.,i3S, Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal
| | - Wolfgang C Winkelmayer
- Section of Nephrology and Selzman Institute for Kidney Health, Baylor College of Medicine, Houston, TX
| | - Jay B Wish
- Division of Nephrology, Indiana University Health, Indianapolis, IN
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16
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Barton JC, Barton JC, Cruz E, Teles MJ, Guimarães JT, Porto G. WITHDRAWN: Chromosome 6p SNP microhaplotypes and IgG3 levels in hemochromatosis probands with HFE p.C282Y homozygosity. Blood Cells Mol Dis 2019. [DOI: 10.1016/j.bcmd.2019.102398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Mallamaci F, Tripepi R, Porto G, D’Arrigo G, Marino C, Versace M, Leonardis D, Tripepi G, Zoccali C. SLEEP DISORDERED BREATHING (SDB) REEMERGENCE AND SYSTEMIC HYPERTENSION IN RENAL TRANSPLANT PATIENTS. J Hypertens 2019. [DOI: 10.1097/01.hjh.0000573760.17724.0e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Simão M, Gavaia PJ, Camacho A, Porto G, Pinto IJ, Ea HK, Cancela ML. Intracellular iron uptake is favored in Hfe-KO mouse primary chondrocytes mimicking an osteoarthritis-related phenotype. Biofactors 2019; 45:583-597. [PMID: 31132316 DOI: 10.1002/biof.1520] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/06/2019] [Indexed: 12/20/2022]
Abstract
HFE-hemochromatosis is a disease characterized by a systemic iron overload phenotype mainly associated with mutations in the HFE protein (HFE) gene. Osteoarthritis (OA) has been reported as one of the most prevalent complications in HFE-hemochromatosis patients, but the mechanisms associated with its onset and progression remain incompletely understood. In this study, we have characterized the response to high iron concentrations of a primary culture of articular chondrocytes isolated from newborn Hfe-KO mice and compared the results with that of a similar experiment developed in cells from C57BL/6 wild-type (wt) mice. Our data provide evidence that both wt- and Hfe-KO-derived chondrocytes, when exposed to 50 μM iron, develop characteristics of an OA-related phenotype, such as an increased expression of metalloproteases, a decreased extracellular matrix production, and a lower expression level of aggrecan. In addition, Hfe-KO cells also showed an increased expression of iron metabolism markers and MMP3, indicating an increased susceptibility to intracellular iron accumulation and higher levels of chondrocyte catabolism. Accordingly, upon treatment with 50 μM iron, these chondrocytes were found to preferentially differentiate toward hypertrophy with increased expression of collagen I and transferrin and downregulation of SRY (sex-determining region Y)-box containing gene 9 (Sox9). In conclusion, high iron exposure can compromise chondrocyte metabolism, which, when simultaneously affected by an Hfe loss of function, appears to be more susceptible to the establishment of an OA-related phenotype.
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Affiliation(s)
- Márcio Simão
- PhD Program Biomedical Sciences and Medicine, University of Algarve, Faro, Portugal
- Centre of Marine Sciences (CCMAR), University of Algarve, Faro, Portugal
- Department of Biomedical Sciences and Medicine (DCBM), University of Algarve, Faro, Portugal
| | - Paulo J Gavaia
- Centre of Marine Sciences (CCMAR), University of Algarve, Faro, Portugal
- Department of Biomedical Sciences and Medicine (DCBM), University of Algarve, Faro, Portugal
| | - António Camacho
- Department of Orthopedics, Hospital de Cascais, Alcabideche, Portugal
| | - Graça Porto
- Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
- Hematology Service, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal
- Instituto de Biologia Molecular e Celular (IBMC) and Instituto de Investigação e Inovação em Saúde (I3S), University of Porto, Porto, Portugal
| | - I Jorge Pinto
- Instituto de Biologia Molecular e Celular (IBMC) and Instituto de Investigação e Inovação em Saúde (I3S), University of Porto, Porto, Portugal
| | - Hang-Korng Ea
- Inserm U1132/BIOSCAR, Université Paris 7 Denis Diderot, Paris, France
| | - M Leonor Cancela
- Centre of Marine Sciences (CCMAR), University of Algarve, Faro, Portugal
- Department of Biomedical Sciences and Medicine (DCBM), University of Algarve, Faro, Portugal
- Algarve Biomedical Centre (ABC) and Centre for Biomedical Research (CBMR), University of Algarve, Faro, Portugal
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19
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Lim PJ, Duarte TL, Arezes J, Garcia-Santos D, Hamdi A, Pasricha SR, Armitage AE, Mehta H, Wideman S, Santos AG, Santos-Gonçalves A, Morovat A, Hughes JR, Soilleux E, Wang CY, Bayer AL, Klenerman P, Willberg CB, Hartley RC, Murphy MP, Babitt JL, Ponka P, Porto G, Drakesmith H. Nrf2 controls iron homeostasis in haemochromatosis and thalassaemia via Bmp6 and hepcidin. Nat Metab 2019; 1:519-531. [PMID: 31276102 PMCID: PMC6609153 DOI: 10.1038/s42255-019-0063-6] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Iron is critical for life but toxic in excess because of iron-catalysed formation of pro-oxidants that cause tissue damage in a range of disorders. The Nrf2 transcription factor orchestrates cell-intrinsic protective antioxidant responses, and the peptide hormone hepcidin maintains systemic iron homeostasis, but is pathophysiologically decreased in haemochromatosis and beta-thalassaemia. Here, we show that Nrf2 is activated by iron-induced, mitochondria-derived pro-oxidants and drives Bmp6 expression in liver sinusoid endothelial cells, which in turn increases hepcidin synthesis by neighbouring hepatocytes. In Nrf2 knockout mice, the Bmp6-hepcidin response to oral and parenteral iron is impaired and iron accumulation and hepatic damage are increased. Pharmacological activation of Nrf2 stimulates the Bmp6-hepcidin axis, improving iron homeostasis in haemochromatosis and counteracting the inhibition of Bmp6 by erythroferrone in beta-thalassaemia. We propose that Nrf2 links cellular sensing of excess toxic iron to control of systemic iron homeostasis and antioxidant responses, and may be a therapeutic target for iron-associated disorders.
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Affiliation(s)
- Pei Jin Lim
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Tiago L. Duarte
- Instituto de Biologia Molecular e Celular & Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - João Arezes
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Daniel Garcia-Santos
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC, Canada
- Department of Physiology, McGill University, Montreal, QC, Canada
| | - Amel Hamdi
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC, Canada
- Department of Physiology, McGill University, Montreal, QC, Canada
| | - Sant-Rayn Pasricha
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | - Andrew E. Armitage
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Hema Mehta
- Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, Oxfordshire, UK
| | - Sarah Wideman
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Ana G. Santos
- Instituto de Biologia Molecular e Celular & Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Andreia Santos-Gonçalves
- Instituto de Biologia Molecular e Celular & Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Alireza Morovat
- Department of Clinical Biochemistry, Oxford University Hospitals NHS Foundation Trust, UK
| | - Jim R. Hughes
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine. University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Elizabeth Soilleux
- Department of Cellular Pathology, Oxford University Hospitals NHS Trust, John Radcliffe Hospital, Oxford, UK
| | - Chia-Yu Wang
- Nephrology Division, Program in Membrane Biology, Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Abraham L. Bayer
- Nephrology Division, Program in Membrane Biology, Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Paul Klenerman
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Oxford NIHR Biomedical Research Centre, The John Radcliffe Hospital, Oxford, UK
| | | | - Richard C. Hartley
- WestCHEM School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Michael P. Murphy
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge, CB2 0XY, UK
| | - Jodie L. Babitt
- Nephrology Division, Program in Membrane Biology, Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Prem Ponka
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC, Canada
- Department of Physiology, McGill University, Montreal, QC, Canada
| | - Graça Porto
- Instituto de Biologia Molecular e Celular & Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Hal Drakesmith
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
- Haematology Theme Oxford Biomedical Research Centre, Oxford, UK
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20
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Simão M, Camacho A, Ostertag A, Cohen-Solal M, Pinto IJ, Porto G, Ea HK, Cancela ML. Correction: Iron-enriched diet contributes to early onset of osteoporotic phenotype in a mouse model of hereditary hemochromatosis. PLoS One 2019; 14:e0216377. [PMID: 31034507 PMCID: PMC6488066 DOI: 10.1371/journal.pone.0216377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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21
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Simão M, Camacho A, Ostertag A, Cohen-Solal M, Pinto IJ, Porto G, Hang Korng E, Cancela ML. Iron-enriched diet contributes to early onset of osteoporotic phenotype in a mouse model of hereditary hemochromatosis. PLoS One 2018; 13:e0207441. [PMID: 30427936 PMCID: PMC6241130 DOI: 10.1371/journal.pone.0207441] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/31/2018] [Indexed: 01/12/2023] Open
Abstract
Osteoporosis is associated with chronic iron overload secondary to hereditary hemochromatosis (HH), but the causative mechanisms are incompletely understood. The main objective of this study was to investigate the role of dietary iron on osteoporosis, using as biological model the Hfe-KO mice, which have a systemic iron overload. We showed that these mice show an increased susceptibility for developing a bone loss phenotype compared to WT mice, which can be exacerbated by an iron rich diet. The dietary iron overload caused an increase in inflammation and iron incorporation within the trabecular bone in both WT and Hfe-KO mice. However, the osteoporotic phenotype was only evident in Hfe-KO mice fed the iron-enriched diet. This appeared to result from an imbalance between bone formation and bone resorption driven by iron toxicity associated to Hfe-KO and confirmed by a decrease in bone microarchitecture parameters (identified by micro-CT) and osteoblast number. These findings were supported by the observed downregulation of bone metabolism markers and upregulation of ferritin heavy polypeptide 1 (Fth1) and transferrin receptor-1 (Tfrc), which are associated with iron toxicity and bone loss phenotype. In WT mice the iron rich diet was not enough to promote a bone loss phenotype, essentially due to the concomitant depression of bone resorption observed in those animals. In conclusion the dietary challenge influences the development of osteoporosis in the HH mice model thus suggesting that the iron content in the diet may influence the osteoporotic phenotype in systemic iron overload conditions.
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Affiliation(s)
- Márcio Simão
- PhD Program in Biomedical Sciences, Department of Biomedical Sciences and Medicine (DCBM), University of Algarve, Faro, Portugal
- Centre of Marine Sciences (CCMAR), University of Algarve, Faro, Portugal
| | - António Camacho
- Department of Orthopedics, Hospital de Cascais, Alcabideche, Portugal
| | - Agnès Ostertag
- Inserm U1132, Bioscar, Hôpital Lariboisiére, pôle locomoteur, service de rhumatologie, Université Paris 7 Denis Diderot, Paris, France
| | - Martine Cohen-Solal
- Inserm U1132, Bioscar, Hôpital Lariboisiére, pôle locomoteur, service de rhumatologie, Université Paris 7 Denis Diderot, Paris, France
| | - I. Jorge Pinto
- Basic and Clinical Research on Iron Biology, Institute for Molecular and Cell Biology (IBMC) and I3S –Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal
| | - Graça Porto
- Basic and Clinical Research on Iron Biology, Institute for Molecular and Cell Biology (IBMC) and I3S –Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal
- Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
- Hematology Service, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal
| | - Ea Hang Korng
- Inserm U1132, Bioscar, Hôpital Lariboisiére, pôle locomoteur, service de rhumatologie, Université Paris 7 Denis Diderot, Paris, France
| | - M. Leonor Cancela
- Centre of Marine Sciences (CCMAR), University of Algarve, Faro, Portugal
- Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
- Department of Biomedical Sciences and Medicine (DCBM), University of Algarve, Faro, Portugal
- Algarve Biomedical Center, University of Algarve, Campus de Gambelas, Faro, Portugal
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22
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Adams P, Altes A, Brissot P, Butzeck B, Cabantchik I, Cançado R, Distante S, Evans P, Evans R, Ganz T, Girelli D, Hultcrantz R, McLaren G, Marris B, Milman N, Nemeth E, Nielsen P, Pineau B, Piperno A, Porto G, Prince D, Ryan J, Sanchez M, Santos P, Swinkels D, Teixeira E, Toska K, Vanclooster A, White D. Therapeutic recommendations in HFE hemochromatosis for p.Cys282Tyr (C282Y/C282Y) homozygous genotype. Hepatol Int 2018; 12:83-86. [PMID: 29589198 PMCID: PMC5904234 DOI: 10.1007/s12072-018-9855-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 03/08/2018] [Indexed: 12/15/2022]
Abstract
Although guidelines are available for hereditary hemochromatosis, a high percentage of the recommendations within them are not shared between the different guidelines. Our main aim is to provide an objective, simple, brief, and practical set of recommendations about therapeutic aspects of HFE hemochromatosis for p.Cys282Tyr (C282Y/C282Y) homozygous genotype, based on the published scientific studies and guidelines, in a form that is reasonably comprehensible to patients and people without medical training. This final version was approved at the Hemochromatosis International meeting on 12th May 2017 in Los Angeles.
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Affiliation(s)
- Paul Adams
- University Hospital, Western University, London, ON, Canada
| | - Albert Altes
- Asociación Española de Hemocromatosis, Santa Coloma, Spain
| | - Pierre Brissot
- Inserm Unit 1241, University Hospital Pontchaillou, Rennes, France.
- HI - Haemochromatosis International, London, UK.
| | - Barbara Butzeck
- HI - Haemochromatosis International, London, UK
- European Federation of Associations of Patients with Haemochromatosis, Seine, France
- Haemochromatose-Vereinigung Deutschland, Hürth, Germany
| | - Ioav Cabantchik
- International Bioiron Society, Schaumburg, USA
- Hebrew University of Jerusalem, Jerusalem, Israel
| | - Rodolfo Cançado
- Division of Hematology, Santa Casa Medical School of Sao Paulo, Sao Paulo, SP, Brazil
| | - Sonia Distante
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - Patricia Evans
- HI - Haemochromatosis International, London, UK
- European Federation of Associations of Patients with Haemochromatosis, Seine, France
| | - Robert Evans
- HI - Haemochromatosis International, London, UK
- Department of Electronic and Computer Engineering, School of Engineering and Design, Brunel University, Uxbridge, UK
- The Haemochromatosis Society, Hertfordshire, UK
| | - Tomas Ganz
- David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Domenico Girelli
- Department of Medicine, University of Verona Veneto Region Referral Center for Iron Metabolism Disorders, Verona, Italy
| | - Rolf Hultcrantz
- Department of Medicine, Unit of Gastroenterology and Rheumatology, Karolinska Institutet, Stockholm, Sweden
| | - Gordon McLaren
- Division of Hematology/Oncology, University of California, Irvine, CA, USA
| | - Ben Marris
- HI - Haemochromatosis International, London, UK
- Haemochromatosis Australia, Meridan Plains, Australia
| | - Nils Milman
- Danish Haemochromatosis Association, Copenhagen, Denmark
| | - Elizabeta Nemeth
- Center for Iron Disorders, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Peter Nielsen
- Institut für Biochemie und Molekulare Zellbiologie, University Medical Center Hamburg, Hamburg, Germany
| | - Brigitte Pineau
- Fédération Française des Associations de Malades de l'hémochromatose, Paris, France
| | - Alberto Piperno
- Department of Medicine and Surgery, Centre for Rare Diseases, University of Milano-Bicocca, Monza, Italy
- Association for the Study of Hemochromatosis and Iron Overload Diseases, Monza, Italy
| | - Graça Porto
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- CHP-HSA - Centro Hospitalar do Porto - Hospital Santo António, Porto, Portugal
| | - Dianne Prince
- HI - Haemochromatosis International, London, UK
- Haemochromatosis Australia, Meridan Plains, Australia
| | - John Ryan
- Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, UK
| | - Mayka Sanchez
- Asociación Española de Hemocromatosis, Santa Coloma, Spain
| | - Paulo Santos
- HI - Haemochromatosis International, London, UK.
- Department of Pharmacology, Universidade Federal de Sao Paulo, São Paulo, Brazil.
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (InCor), University of São Paulo Medical School, 03 de Maio St. INFAR, 4° andar - Vila Clementino, São Paulo, SP, Brazil.
| | - Dorine Swinkels
- Department of Laboratory Medicine, Radboudumc, Nijmegen, The Netherlands
| | - Emerência Teixeira
- HI - Haemochromatosis International, London, UK
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- FCUP - Faculdade de Ciências da Universidade do Porto, Porto, Portugal
- APH - Associação Portuguesa de Hemocromatose, Porto, Portugal
| | - Ketil Toska
- HI - Haemochromatosis International, London, UK
- Norwegian Haemochromatosis Association, Bergen, Norway
| | - Annick Vanclooster
- University Hospitals Leuven, Gasthuisberg, Louvain, Belgium
- Haemochromatose Vereniging Vlaanderen, Leuven, Belgium
| | - Desley White
- HI - Haemochromatosis International, London, UK
- University of Plymouth, Plymouth, UK
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23
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Marques O, Canadas A, Faria F, Oliveira E, Amorim I, Seixas F, Gama A, Lobo-da-Cunha A, Silva BMD, Porto G, Lopes C. Expression of iron-related proteins in feline and canine mammary gland reveals unexpected accumulation of iron. Biotech Histochem 2017; 92:584-594. [PMID: 29172705 DOI: 10.1080/10520295.2017.1369160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Dysregulation of cellular iron homeostasis in human breast cancer is reflected by the altered expression of regulatory proteins. The expressions of iron-related proteins in the mammary glands of cats and dogs have not been assessed. We evaluated the expressions of ferritin, ferroportin, hepcidin and transferrin receptor 1 in benign and malignant mammary gland lesions in cats and dogs. Iron deposition was detected using Perls' Prussian blue staining. We found no major differences in the expression of iron-related proteins between benign and malignant mammary gland lesions in either cats or dogs; however, these species exhibited accumulation of iron in benign lesions. Our findings provide an explanation for the absence of higher iron requirements by tumor cells in these animals. Further investigation of local iron homeostasis in cats and dogs and differences in their physiology compared to human breast cancer is required.
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Affiliation(s)
- O Marques
- a Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,c Basic and Clinical Research on Iron Biology, Molecular and Cell Biology Institute (IBMC) University of Porto , Porto.,d Institute for Research and Innovation in Health Sciences (i3S), University of Porto , Porto
| | - A Canadas
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - F Faria
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - E Oliveira
- a Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,e Laboratory of Cell Biology, Department of Microscopy , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - I Amorim
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,d Institute for Research and Innovation in Health Sciences (i3S), University of Porto , Porto.,f Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), University of Porto , Porto
| | - F Seixas
- g Centre of Animal and Veterinary Sciences, University of Trás-os-Montes e Alto Douro (CECAV-UTAD) , Vila Real
| | - A Gama
- g Centre of Animal and Veterinary Sciences, University of Trás-os-Montes e Alto Douro (CECAV-UTAD) , Vila Real
| | - A Lobo-da-Cunha
- a Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,e Laboratory of Cell Biology, Department of Microscopy , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - B Martins da Silva
- a Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto
| | - G Porto
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,c Basic and Clinical Research on Iron Biology, Molecular and Cell Biology Institute (IBMC) University of Porto , Porto.,d Institute for Research and Innovation in Health Sciences (i3S), University of Porto , Porto.,e Laboratory of Cell Biology, Department of Microscopy , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,f Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), University of Porto , Porto.,g Centre of Animal and Veterinary Sciences, University of Trás-os-Montes e Alto Douro (CECAV-UTAD) , Vila Real.,h Hematology Service, Santo António Hospital, Porto Hospital Centre
| | - C Lopes
- b Pathology and Molecular Immunology Department , Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto , Porto.,i Department of Pathology , Portuguese Oncology Institute (IPO) , Porto , Portugal
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24
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França M, Martí-Bonmatí L, Silva S, Oliveira C, Alberich Bayarri Á, Vilas Boas F, Pessegueiro-Miranda H, Porto G. Optimizing the management of hereditary haemochromatosis: the value of MRI R2* quantification to predict and monitor body iron stores. Br J Haematol 2017; 183:491-493. [PMID: 29082508 DOI: 10.1111/bjh.14982] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Manuela França
- Imaging Department - Centro Hospitalar do Porto, Porto, Portugal.,i3S, Instituto de Investigação e Inovação em Saúde, University of Porto, IBMC, Institute for Molecular and Cell Biology, Porto, Portugal
| | - Luis Martí-Bonmatí
- Radiology Department and Biomedical Imaging Research Group (GIBI230), Hospital Universitario y Politécnico La Fe and Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - Sara Silva
- Faculty of Sciences, University of Porto, Porto, Portugal
| | - Carla Oliveira
- i3S, Instituto de Investigação e Inovação em Saúde, University of Porto, INEB - Instituto de Engenharia Biomédica, Porto, Portugal
| | - Ángel Alberich Bayarri
- Radiology Department and Biomedical Imaging Research Group (GIBI230), Hospital Universitario y Politécnico La Fe and Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - Filipa Vilas Boas
- Imaging Department, Hospital Distrital de Santarém, Santarém, Portugal
| | - Helena Pessegueiro-Miranda
- Liver and Pancreas Transplantation Unit and Medicine Department, Centro Hospitalar do Porto, Porto, Portugal.,Epidemiology Research Unit (EPIUnit), Institute of Public Health of the University of Porto, Porto, Portugal.,Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Graça Porto
- i3S, Instituto de Investigação e Inovação em Saúde, University of Porto, IBMC, Institute for Molecular and Cell Biology, Porto, Portugal.,Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), University of Porto, Porto, Portugal.,Haematology Department, Centro Hospitalar do Porto, Porto, Portugal
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25
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Pasricha SR, Lim PJ, Duarte TL, Casu C, Oosterhuis D, Mleczko-Sanecka K, Suciu M, Da Silva AR, Al-Hourani K, Arezes J, McHugh K, Gooding S, Frost JN, Wray K, Santos A, Porto G, Repapi E, Gray N, Draper SJ, Ashley N, Soilleux E, Olinga P, Muckenthaler MU, Hughes JR, Rivella S, Milne TA, Armitage AE, Drakesmith H. Hepcidin is regulated by promoter-associated histone acetylation and HDAC3. Nat Commun 2017; 8:403. [PMID: 28864822 PMCID: PMC5581335 DOI: 10.1038/s41467-017-00500-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 07/04/2017] [Indexed: 12/21/2022] Open
Abstract
Hepcidin regulates systemic iron homeostasis. Suppression of hepcidin expression occurs physiologically in iron deficiency and increased erythropoiesis but is pathologic in thalassemia and hemochromatosis. Here we show that epigenetic events govern hepcidin expression. Erythropoiesis and iron deficiency suppress hepcidin via erythroferrone-dependent and -independent mechanisms, respectively, in vivo, but both involve reversible loss of H3K9ac and H3K4me3 at the hepcidin locus. In vitro, pan-histone deacetylase inhibition elevates hepcidin expression, and in vivo maintains H3K9ac at hepcidin-associated chromatin and abrogates hepcidin suppression by erythropoietin, iron deficiency, thalassemia, and hemochromatosis. Histone deacetylase 3 and its cofactor NCOR1 regulate hepcidin; histone deacetylase 3 binds chromatin at the hepcidin locus, and histone deacetylase 3 knockdown counteracts hepcidin suppression induced either by erythroferrone or by inhibiting bone morphogenetic protein signaling. In iron deficient mice, the histone deacetylase 3 inhibitor RGFP966 increases hepcidin, and RNA sequencing confirms hepcidin is one of the genes most differentially regulated by this drug in vivo. We conclude that suppression of hepcidin expression involves epigenetic regulation by histone deacetylase 3.Hepcidin controls systemic iron levels by inhibiting intestinal iron absorption and iron recycling. Here, Pasricha et al. demonstrate that the hepcidin-chromatin locus displays HDAC3-mediated reversible epigenetic modifications during both erythropoiesis and iron deficiency.
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Affiliation(s)
- Sant-Rayn Pasricha
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK.
- Department of Medicine, The Royal Melbourne Hospital, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, 3010, Australia.
| | - Pei Jin Lim
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Tiago L Duarte
- Instituto de Investigação e Inovação em Saúde and IBMC-Instituto de Biologia Molecular e Celular, University of Porto, 4200-135, Porto, Portugal
| | - Carla Casu
- Division of Hematology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, 19104, USA
| | - Dorenda Oosterhuis
- Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, 9700-AD, Groningen, The Netherlands
| | - Katarzyna Mleczko-Sanecka
- Department of Pediatric Hematology, Oncology and Immunology, University of Heidelberg; and Molecular Medicine Partnership Unit, Heidelberg, 69117, Germany
- International Institute of Molecular and Cell Biology, 02-109, Warsaw, Poland
| | - Maria Suciu
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Ana Rita Da Silva
- Department of Pediatric Hematology, Oncology and Immunology, University of Heidelberg; and Molecular Medicine Partnership Unit, Heidelberg, 69117, Germany
| | - Kinda Al-Hourani
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - João Arezes
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Kirsty McHugh
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford, OX3 7DQ, UK
| | - Sarah Gooding
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Joe N Frost
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Katherine Wray
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Ana Santos
- Instituto de Investigação e Inovação em Saúde and IBMC-Instituto de Biologia Molecular e Celular, University of Porto, 4200-135, Porto, Portugal
| | - Graça Porto
- Instituto de Investigação e Inovação em Saúde and IBMC-Instituto de Biologia Molecular e Celular, University of Porto, 4200-135, Porto, Portugal
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, University of Porto Portugal, 4050-313, Porto, Portugal
| | - Emmanouela Repapi
- Computational Biology Research Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Nicki Gray
- Computational Biology Research Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK
| | - Simon J Draper
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford, OX3 7DQ, UK
| | - Neil Ashley
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Elizabeth Soilleux
- Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, Oxford University, Oxford, OX3 9DU, UK
- Division of Cellular and Molecular Pathology, Department of Pathology, Cambridge University, Cambridge, CB2 0QQ, UK
| | - Peter Olinga
- Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, 9700-AD, Groningen, The Netherlands
| | - Martina U Muckenthaler
- Department of Pediatric Hematology, Oncology and Immunology, University of Heidelberg; and Molecular Medicine Partnership Unit, Heidelberg, 69117, Germany
| | - Jim R Hughes
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Stefano Rivella
- Division of Hematology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, 19104, USA
| | - Thomas A Milne
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Andrew E Armitage
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - Hal Drakesmith
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK.
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26
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França M, Martí-Bonmatí L, Porto G, Silva S, Guimarães S, Alberich-Bayarri Á, Vizcaíno JR, Pessegueiro Miranda H. Tissue iron quantification in chronic liver diseases using MRI shows a relationship between iron accumulation in liver, spleen, and bone marrow. Clin Radiol 2017; 73:215.e1-215.e9. [PMID: 28863932 DOI: 10.1016/j.crad.2017.07.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 07/10/2017] [Accepted: 07/31/2017] [Indexed: 02/06/2023]
Abstract
AIM To investigate iron loading within the liver, pancreas, spleen, and bone marrow using magnetic resonance imaging (MRI) transverse relaxation rate (R2*), in patients with diffuse liver diseases; to evaluate the relationships between iron accumulation in these tissue compartments; and to assess the association between tissue iron overload and the pattern of hepatic cellular iron distribution (hepatocytes versus Kupffer cells). MATERIAL AND METHODS Fifty-six patients with diffuse liver diseases had MRI-derived R2* values, using a multi-echo chemical-shift encoded MRI sequence, of the liver, pancreas, spleen, and vertebral bone marrow. All patients had liver biopsy samples scored for hepatic iron grading (0-4) and iron cellular distribution (within hepatocytes only or within both hepatocytes and Kupffer cells). RESULTS Liver R2* increased with histological iron grade (RS=0.58, p<0.001) and correlated with spleen (RS=0.71, p<0.001) and bone marrow R2* (RS=0.66, p<0.001), but not with pancreatic R2* (RS=0.22, p=0.096). Splenic and bone marrow R2* values were also correlated (RS=0.72, p<0.001). Patients with iron inside Kupffer cells had the highest R2* in liver, spleen and bone marrow. CONCLUSIONS Patients with chronic diffuse liver diseases have concomitant hepatic, splenic, and bone marrow iron loading. The highest hepatic iron scores and iron inside Kupffer cells were associated with the highest splenic and bone marrow deposits, suggesting systemic iron accumulation in the mononuclear phagocytic system.
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Affiliation(s)
- M França
- Imaging Department - Centro Hospitalar do Porto, Largo Prof Abel Salazar, 4099-001 Porto, Portugal; i3S, Instituto de Investigação e Inovação em Saúde, IBMC, Institute for Molecular and Cell Biology, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal.
| | - L Martí-Bonmatí
- Radiology Department, Hospital Universitario y Politécnico La Fe and Biomedical Imaging Research Group (GIBI230), Av. Fernando Abril Martorell 106 Torre E, 46026 Valencia, Spain
| | - G Porto
- i3S, Instituto de Investigação e Inovação em Saúde, IBMC, Institute for Molecular and Cell Biology, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal; Haematology Department, Centro Hospitalar do Porto, Largo Prof Abel Salazar, 4099-001 Porto, Portugal; Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - S Silva
- Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - S Guimarães
- Pathology Department, Centro Hospitalar de S. João, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Á Alberich-Bayarri
- Radiology Department, Hospital Universitario y Politécnico La Fe and Biomedical Imaging Research Group (GIBI230), Av. Fernando Abril Martorell 106 Torre E, 46026 Valencia, Spain
| | - J R Vizcaíno
- Pathology Department - Centro Hospitalar do Porto, Largo Prof Abel Salazar, 4099-001 Porto, Portugal
| | - H Pessegueiro Miranda
- Instituto de Ciências Biomédicas de Abel Salazar (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; Liver and Pancreas Transplantation Unit and Medicine Department - Centro Hospitalar do Porto, Largo Prof Abel Salazar, 4099-001 Porto, Portugal; Epidemiology Research Unit (EPIUnit), Institute of Public Health of the University of Porto, Rua das Taipas, 135, 4050-600 Porto, Portugal
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27
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Monteiro J, Lago C, Filho D, Barbosa L, Carneiro S, Porto G. Le Fort I osteotomy with midpalatal split improving access to the craniovertebral junction in a patient with Chiari malformation. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Porto G, Brissot P, Swinkels DW, Zoller H, Kamarainen O, Patton S, Alonso I, Morris M, Keeney S. EMQN best practice guidelines for the molecular genetic diagnosis of hereditary hemochromatosis (HH). Eur J Hum Genet 2016; 24:479-95. [PMID: 26153218 PMCID: PMC4929861 DOI: 10.1038/ejhg.2015.128] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 04/29/2015] [Accepted: 05/06/2015] [Indexed: 12/14/2022] Open
Abstract
Molecular genetic testing for hereditary hemochromatosis (HH) is recognized as a reference test to confirm the diagnosis of suspected HH or to predict its risk. The vast majority (typically >90%) of patients with clinically characterized HH are homozygous for the p.C282Y variant in the HFE gene, referred to as HFE-related HH. Since 1996, HFE genotyping was implemented in diagnostic algorithms for suspected HH, allowing its early diagnosis and prevention. However, the penetrance of disease in p.C282Y homozygotes is incomplete. Hence, homozygosity for p.C282Y is not sufficient to diagnose HH. Neither is p.C282Y homozygosity required for diagnosis as other rare forms of HH exist, generally referred to as non-HFE-related HH. These pose significant challenges when defining criteria for referral, testing protocols, interpretation of test results and reporting practices. We present best practice guidelines for the molecular genetic diagnosis of HH where recommendations are classified, as far as possible, according to the level and strength of evidence. For clarification, the guidelines' recommendations are preceded by a detailed description of the methodology and results obtained with a series of actions taken in order to achieve a wide expert consensus, namely: (i) a survey on the current practices followed by laboratories offering molecular diagnosis of HH; (ii) a systematic literature search focused on some identified controversial topics; (iii) an expert Best Practice Workshop convened to achieve consensus on the practical recommendations included in the guidelines.
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Affiliation(s)
- Graça Porto
- Center for Predictive and Preventive Genetics (CGPP), Institute of Molecular and Cellular Biology (IBMC), Porto, Portugal
- Clinical Haematology, Hospital Santo António (CHP-HAS) and Department of Molecular Pathology and Immunology, Abel Salazar Institute for Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal
| | - Pierre Brissot
- Liver Disease Unit, Pontchaillou University Hospital, University of Rennes, and National Reference Centre for Rare Iron Overload Diseases of Genetic Origin, Rennes, France
| | - Dorine W Swinkels
- Department of Laboratory Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Heinz Zoller
- Department of Medicine II, Gastroenterology and Hepatology, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Simon Patton
- European Molecular Quality Network (EMQN), Manchester, UK
| | - Isabel Alonso
- Center for Predictive and Preventive Genetics (CGPP), Institute of Molecular and Cellular Biology (IBMC), Porto, Portugal
| | - Michael Morris
- European Molecular Quality Network (EMQN), Manchester, UK
- Synlab, Lausanne, Switzerland
| | - Steve Keeney
- European Molecular Quality Network (EMQN), Manchester, UK
- Molecular Diagnostics Centre (Haematology), Manchester Royal Infirmary, Manchester, UK
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Marques O, Porto G, Rêma A, Faria F, Cruz Paula A, Gomez-Lazaro M, Silva P, Martins da Silva B, Lopes C. Local iron homeostasis in the breast ductal carcinoma microenvironment. BMC Cancer 2016; 16:187. [PMID: 26944411 PMCID: PMC4779214 DOI: 10.1186/s12885-016-2228-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 02/29/2016] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND While the deregulation of iron homeostasis in breast epithelial cells is acknowledged, iron-related alterations in stromal inflammatory cells from the tumor microenvironment have not been explored. METHODS Immunohistochemistry for hepcidin, ferroportin 1 (FPN1), transferrin receptor 1 (TFR1) and ferritin (FT) was performed in primary breast tissues and axillary lymph nodes in order to dissect the iron-profiles of epithelial cells, lymphocytes and macrophages. Furthermore, breast carcinoma core biopsies frozen in optimum cutting temperature (OCT) compound were subjected to imaging flow cytometry to confirm FPN1 expression in the cell types previously evaluated and determine its cellular localization. RESULTS We confirm previous results by showing that breast cancer epithelial cells present an 'iron-utilization phenotype' with an increased expression of hepcidin and TFR1, and decreased expression of FT. On the other hand, lymphocytes and macrophages infiltrating primary tumors and from metastized lymph nodes display an 'iron-donor' phenotype, with increased expression of FPN1 and FT, concomitant with an activation profile reflected by a higher expression of TFR1 and hepcidin. A higher percentage of breast carcinomas, compared to control mastectomy samples, present iron accumulation in stromal inflammatory cells, suggesting that these cells may constitute an effective tissue iron reservoir. Additionally, not only the deregulated expression of iron-related proteins in epithelial cells, but also on lymphocytes and macrophages, are associated with clinicopathological markers of breast cancer poor prognosis, such as negative hormone receptor status and tumor size. CONCLUSIONS The present results reinforce the importance of analyzing the tumor microenvironment in breast cancer, extending the contribution of immune cells to local iron homeostasis in the tumor microenvironment context.
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Affiliation(s)
- Oriana Marques
- Laboratory of Immunogenetics - Autoimmunity and Neurosciences, Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira 228,Edif 2 Piso 4, P-4050313, Porto, Portugal. .,Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal. .,Basic and Clinical Research on Iron Biology, Instituto de Biologia Molecular e Celular (IBMC), University of Porto, Porto, Portugal. .,Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal.
| | - Graça Porto
- Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal. .,Hematology Service, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal.
| | - Alexandra Rêma
- Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal.
| | - Fátima Faria
- Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal.
| | - Arnaud Cruz Paula
- Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal. .,Department of Pathology, Portuguese Oncology Institute (IPO), Porto, Portugal.
| | - Maria Gomez-Lazaro
- Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal. .,Instituto Nacional de Engenharia Biomédica (INEB), University of Porto, Porto, Portugal.
| | - Paula Silva
- Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal. .,Faculty of Medicine of University of Porto (FMUP), Porto, Portugal. .,Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal.
| | - Berta Martins da Silva
- Laboratory of Immunogenetics - Autoimmunity and Neurosciences, Unit for Multidisciplinary Biomedical Research (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua Jorge Viterbo Ferreira 228,Edif 2 Piso 4, P-4050313, Porto, Portugal. .,Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal.
| | - Carlos Lopes
- Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal. .,Department of Pathology, Portuguese Oncology Institute (IPO), Porto, Portugal.
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30
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de Sousa M, Reimão R, Porto G, Grady RW, Hilgartner MW, Giardina P. Iron and lymphocytes: reciprocal regulatory interactions. Curr Stud Hematol Blood Transfus 2015:171-7. [PMID: 1954765 DOI: 10.1159/000419357] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- M de Sousa
- Abel Salazar Institute for the Biomedical Sciences, Oporto, Portugal
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31
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Costa M, Cruz E, Oliveira S, Benes V, Ivacevic T, Silva MJ, Vieira I, Dias F, Fonseca S, Gonçalves M, Lima M, Leitão C, Muckenthaler MU, Pinto J, Porto G. Lymphocyte gene expression signatures from patients and mouse models of hereditary hemochromatosis reveal a function of HFE as a negative regulator of CD8+ T-lymphocyte activation and differentiation in vivo. PLoS One 2015; 10:e0124246. [PMID: 25880808 PMCID: PMC4399836 DOI: 10.1371/journal.pone.0124246] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 02/27/2015] [Indexed: 12/22/2022] Open
Abstract
Abnormally low CD8+ T-lymphocyte numbers is characteristic of some patients with hereditary hemochromatosis (HH), a MHC-linked disorder of iron overload. Both environmental and genetic components are known to influence CD8+ T-lymphocyte homeostasis but the role of the HH associated protein HFE is still insufficiently understood. Genome-wide expression profiling was performed in peripheral blood CD8+ T lymphocytes from HH patients selected according to CD8+ T-lymphocyte numbers and from Hfe-/- mice maintained either under normal or high iron diet conditions. In addition, T-lymphocyte apoptosis and cell cycle progression were analyzed by flow cytometry in HH patients. HH patients with low CD8+ T-lymphocyte numbers show a differential expression of genes related to lymphocyte differentiation and maturation namely CCR7, LEF1, ACTN1, NAA50, P2RY8 and FOSL2, whose expression correlates with the relative proportions of naïve, central and effector memory subsets. In addition, expression levels of LEF1 and P2RY8 in memory cells as well as the proportions of CD8+ T cells in G2/M cell cycle phase are significantly different in HH patients compared to controls. Hfe-/- mice do not show alterations in CD8+ T-lymphocyte numbers but differential gene response patterns. We found an increased expression of S100a8 and S100a9 that is most pronounced in high iron diet conditions. Similarly, CD8+ T lymphocytes from HH patients display higher S100a9 expression both at the mRNA and protein level. Altogether, our results support a role for HFE as a negative regulator of CD8+ T-lymphocyte activation. While the activation markers S100a8 and S100a9 are strongly increased in CD8+ T cells from both, Hfe-/- mice and HH patients, a differential profile of genes related to differentiation/maturation of CD8+ T memory cells is evident in HH patients only. This supports the notion that HFE contributes, at least in part, to the generation of low peripheral blood CD8+ T lymphocytes in HH.
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Affiliation(s)
- Mónica Costa
- I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Basic and Clinical Research on Iron Biology, IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Doctoral Program in Biomedicine, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - Eugénia Cruz
- I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Basic and Clinical Research on Iron Biology, IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Clinical Hematology, Santo António Hospital—Centro Hospitalar do Porto, Porto, Portugal
| | - Susana Oliveira
- I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Basic and Clinical Research on Iron Biology, IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Vladimir Benes
- Genomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Tomi Ivacevic
- Genomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Maria João Silva
- Clinical Hematology, Santo António Hospital—Centro Hospitalar do Porto, Porto, Portugal
| | - Inês Vieira
- I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Basic and Clinical Research on Iron Biology, IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Francisco Dias
- Clinical Hematology, Santo António Hospital—Centro Hospitalar do Porto, Porto, Portugal
| | - Sónia Fonseca
- Clinical Hematology, Santo António Hospital—Centro Hospitalar do Porto, Porto, Portugal
| | - Marta Gonçalves
- Clinical Hematology, Santo António Hospital—Centro Hospitalar do Porto, Porto, Portugal
| | - Margarida Lima
- Clinical Hematology, Santo António Hospital—Centro Hospitalar do Porto, Porto, Portugal
| | - Catarina Leitão
- Advanced Flow Cytometry Unit, IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Martina U. Muckenthaler
- Departments of Pediatric Hematology, Oncology and Immunology, University of Heidelberg and Molecular Medicine Partnership Unit, Heidelberg, Germany
| | - Jorge Pinto
- I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Basic and Clinical Research on Iron Biology, IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Graça Porto
- I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- Basic and Clinical Research on Iron Biology, IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Clinical Hematology, Santo António Hospital—Centro Hospitalar do Porto, Porto, Portugal
- Molecular Immunology and Pathology, ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- * E-mail:
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Nazareth T, Sousa CA, Porto G, Gonçalves L, Seixas G, Antunes L, Silva AC, Teodósio R. Impact of a dengue outbreak experience in the preventive perceptions of the community from a temperate region: Madeira Island, Portugal. PLoS Negl Trop Dis 2015; 9:e0003395. [PMID: 25767886 PMCID: PMC4388461 DOI: 10.1371/journal.pntd.0003395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 11/05/2014] [Indexed: 12/02/2022] Open
Abstract
The ability to effectively modify behaviours is increasingly relevant to attain and maintain a good health status. Current behaviour-change models and theories present two main approaches for (healthier) decision-making: one analytical/logical, and one experiential/emotional/intuitive. Therefore, to achieve an integral and dynamic understanding of the public perceptions both approaches should be considered: community surveys should measure cognitive understanding of health-risk contexts, and also explore how past experiences affect this understanding. In 2011, community perceptions regarding domestic source reduction were assessed in Madeira Island͘. After Madeira's first dengue outbreak (2012) a unique opportunity to compare perceptions before and after the outbreak-experience occurred. This was the aim of this study, which constituted the first report on the effect of an outbreak experience on community perceptions regarding a specific vector-borne disease. A cross-sectional survey was performed within female residents at the most aegypti-infested areas. Perceptions regarding domestic source reduction were assessed according to the Essential Perception (EP)-analysis tool. A matching process paired individuals from studies performed before and after the outbreak, ensuring homogeneity in six determinant variables. After the outbreak, there were more female residents who assimilated the concepts considered to be essential to understand the proposed behaviour. Nevertheless, no significant difference was observed in the number of female residents who achieved the defined 'minimal understanding''. Moreover, most of the population (95.5%) still believed at least in one of the identified myths. After the outbreak some myths disappeared and others appeared. The present study quantified and explored how the experience of an outbreak influenced the perception regarding a dengue-preventive behaviour. The outbreak experience surprisingly led to the appearance of new myths within the population, apart from the expected increase of relevant concepts' assimilation. Monitoring public perceptions is therefore crucial to make preventing dengue campaigns updated and worthy.
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Affiliation(s)
- Teresa Nazareth
- GABBA Doctoral Program, ICBAS, Abel Salazar Institute for the Biomedical
Sciences, University of Porto, Porto, Portugal
- Unidade Clínica Tropical, Instituto de Higiene e Medicina
Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina
Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Carla Alexandra Sousa
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina
Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Unidade de Parasitologia e Microbiologia Médica, Instituto de
Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa,
Portugal
| | - Graça Porto
- GABBA Doctoral Program, ICBAS, Abel Salazar Institute for the Biomedical
Sciences, University of Porto, Porto, Portugal
- Basic & Clinical Research on Iron Biology, IBMC, Institute for
Molecular and Cellular Biology, Porto, Portugal
| | - Luzia Gonçalves
- Unidade de Saúde Pública e Internacional e
Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade
Nova de Lisboa, Lisboa, Portugal
- Centro de Estatística e Aplicações da Universidade
de Lisboa (CEAUL), Lisboa, Portugal
| | - Gonçalo Seixas
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina
Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Luís Antunes
- DROTA—Direção de Serviços de
Informação Geográfica e Cadastro, Direção
Regional de Ordenamento de Território e Ambiente, Funchal, Região
Autónoma da Madeira, Portugal
| | - Ana Clara Silva
- Departamento de Saúde, Planeamento e Administração
Geral, Instituto de Administração da Saúde e Assuntos
Sociais, Funchal, Região Autónoma da Madeira,
Portugal
| | - Rosa Teodósio
- Unidade Clínica Tropical, Instituto de Higiene e Medicina
Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Centro de Malária e Doenças Tropicais, Instituto de Higiene
e Medicina Tropical, Universidade Nova de Lisboa, Lisboa,
Portugal
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Couto D, Sousa R, Andrade L, Leander M, Lopez-Quintela MA, Rivas J, Freitas P, Lima M, Porto G, Porto B, Carvalho F, Fernandes E. Polyacrylic acid coated and non-coated iron oxide nanoparticles are not genotoxic to human T lymphocytes. Toxicol Lett 2015; 234:67-73. [PMID: 25683033 DOI: 10.1016/j.toxlet.2015.02.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Revised: 01/31/2015] [Accepted: 02/11/2015] [Indexed: 12/17/2022]
Abstract
The use of iron oxide nanoparticles (ION) for diagnostic and therapeutic purposes requires a clear favorable risk-benefit ratio. This work was performed with the aim of studying the ability of polyacrylic acid (PAA)-coated and non-coated ION to induce genotoxicity in human T lymphocytes. For that purpose, their influence on cell cycle progression and on the induction of chromosome aberrations was evaluated. Blood samples collected from healthy human donors were exposed to PAA-coated and non-coated ION, at different concentrations, for 48h. The obtained results showed that, for all culture conditions, the tested ION are not genotoxic and do not influence the cell cycle arrest. Their possible cumulative effect with the iron-dependent genotoxic agent BLM was also evaluated. Blood samples collected from healthy human donors were exposed to ION, at different concentrations, for 48h, in the presence of a pre-determined toxic concentration of BLM. The obtained results showed that, for all culture conditions, the tested ION do not potentiate the clastogenic effects of BLM.
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Affiliation(s)
- Diana Couto
- UCIBIO/REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Rosa Sousa
- Laboratory of Cytogenetics, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Lara Andrade
- Laboratory of Cytogenetics, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Magdalena Leander
- Service of Clinical Hematology, Santo António Hospital, Porto, Portugal
| | - M Arturo Lopez-Quintela
- Laboratory of Nanotechnology and Magnetism, Institute of Technological Research, IIT, University of Santiago de Compostela (USC), Spain
| | - José Rivas
- International Iberian Nanotechnology Laboratory, Braga, Portugal
| | - Paulo Freitas
- International Iberian Nanotechnology Laboratory, Braga, Portugal
| | - Margarida Lima
- Service of Clinical Hematology, Santo António Hospital, Porto, Portugal
| | - Graça Porto
- Service of Clinical Hematology, Santo António Hospital, Porto, Portugal
| | - Beatriz Porto
- Laboratory of Cytogenetics, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Félix Carvalho
- UCIBIO/REQUIMTE Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.
| | - Eduarda Fernandes
- UCIBIO/REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.
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Couto D, Freitas M, Porto G, Lopez-Quintela MA, Rivas J, Freitas P, Carvalho F, Fernandes E. Polyacrylic acid-coated and non-coated iron oxide nanoparticles induce cytokine activation in human blood cells through TAK1, p38 MAPK and JNK pro-inflammatory pathways. Arch Toxicol 2014; 89:1759-69. [PMID: 25108419 DOI: 10.1007/s00204-014-1325-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Accepted: 07/21/2014] [Indexed: 11/30/2022]
Abstract
Iron oxide nanoparticles (ION) can have a wide scope of applications in biomedicine, namely in magnetic resonance imaging, tissue repair, drug delivery, hyperthermia, transfection, tissue soldering, and as antimicrobial agents. The safety of these nanoparticles, however, is not completely established, namely concerning their effect on immune system and inflammatory pathways. The aim of this study was to evaluate the in vitro effect of polyacrylic acid (PAA)-coated ION and non-coated ION on the production of six cytokines [interleukin 1 beta (IL-1β), tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6), interleukin 8 (IL-8), interferon gamma (IFN-γ) and interleukin 10 (IL-10)] by human peripheral blood cells, and to determine the inflammatory pathways involved in this production. The obtained results showed that PAA-coated and non-coated ION were able to induce all the tested cytokines and that activation of transforming growth factor beta (TGF-β)-activated kinase (TAK1), p38 mitogen-activated protein kinases (p38 MAPK) and c-Jun N-terminal kinases (JNK) were involved in this effect.
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Affiliation(s)
- Diana Couto
- REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Marisa Freitas
- REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Graça Porto
- Service of Clinical Hematology, Santo António Hospital, Porto, Portugal
| | - M Arturo Lopez-Quintela
- Laboratory of Nanotechnology and Magnetism, Institute of Technological Research, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - José Rivas
- International Iberian Nanotechnology Laboratory, Braga, Portugal
| | - Paulo Freitas
- International Iberian Nanotechnology Laboratory, Braga, Portugal
| | - Félix Carvalho
- REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.
| | - Eduarda Fernandes
- REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.
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Teixeira E, Borlido-Santos J, Brissot P, Butzeck B, Courtois F, Evans RW, Fernau J, Nunes JA, Mullett M, Paneque M, Pineau B, Porto G, Sorrill R, Sanchez M, Swinkels DW, Toska K, Varkonyi J. The importance of the general practitioner as an information source for patients with hereditary haemochromatosis. Patient Educ Couns 2014; 96:86-92. [PMID: 24857332 DOI: 10.1016/j.pec.2014.04.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 04/12/2014] [Accepted: 04/28/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To explore hereditary haemochromatosis (HH) patients' perspectives on genetic information, namely the types of sources used, preferred or trusted. METHODS A survey online was conducted by the European Federation of Associations of Patients with Haemochromatosis (EFAPH) and applied to members of nine National Associations. RESULTS From a total of 1019 validated questionnaires, 895 respondents had performed a genetic testing for HH. From these, 627 self-declared that they were sufficiently informed about the implications of the genetic test to their health. The majority (66%) obtained the information from a specialist doctor, but would like to obtain it from the family doctor. However, the specialist was still the one they trusted more (69%). Regarding the 298 respondents who did not feel sufficiently informed, the majority (78%) also would like to have information from the family doctor although they also trusted the specialist more (75%). A different perspective was reported when patients were asked about the implications of the genetic testing to their family members, where the majority of respondents preferred obtaining information from a specialist (69%). CONCLUSION This study elucidates the patients' needs for information and identifies the general practitioner (GP) as the preferred source to obtain information about HH. PRACTICE IMPLICATIONS These results may have important implications in future strategies for HH awareness, giving a special emphasis on GPs as the main players.
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Affiliation(s)
- Emerência Teixeira
- IBMC - Institute for Molecular and Cell Biology, University of Porto, Porto, Portugal; FCUP - Faculty of Science, University of Porto, Porto, Portugal
| | - Júlio Borlido-Santos
- IBMC - Institute for Molecular and Cell Biology, University of Porto, Porto, Portugal
| | - Pierre Brissot
- National Reference Centre for Rare Iron Overload Disorders of Genetic Origin and Inserm U-991, Pontchaillou University Hospital, Rennes, France
| | - Barbara Butzeck
- Haemochromatose-Vereinigung Deutschland e.V.(HVD), Koeln, Germany; EFAPH - European Federation of Associations of Patients with Haemochromatosis, Croissy-sur-Seine, France
| | - Françoise Courtois
- FFAMH - Fédération Française des Associations de Malades de l'Hemochromatose, Paris, France; EFAPH - European Federation of Associations of Patients with Haemochromatosis, Croissy-sur-Seine, France
| | - Robert W Evans
- Doctor-on-a-Chip Laboratory, Department of Electronic and Computer Engineering, School of Engineering and Design, Brunel University, Uxbridge, United Kingdom; The Haemochromatosis Society, Hertfordshire, United Kingdom
| | - Janet Fernau
- The Haemochromatosis Society, Hertfordshire, United Kingdom
| | | | | | - Milena Paneque
- IBMC - Institute for Molecular and Cell Biology, University of Porto, Porto, Portugal; CGPP - Centre for Predictive and Preventive Medicine, Porto, Portugal
| | - Brigitte Pineau
- FFAMH - Fédération Française des Associations de Malades de l'Hemochromatose, Paris, France
| | - Graça Porto
- IBMC - Institute for Molecular and Cell Biology, University of Porto, Porto, Portugal; CGPP - Centre for Predictive and Preventive Medicine, Porto, Portugal; CHP-HSA, Porto Hospital Center - Santo António Hospital, Porto, Portugal; Associação Portuguesa de Hemocromatose, Porto, Portugal.
| | - Robert Sorrill
- Associazione per lo Studio di Emocromatosi e delle Malattie da Sovraccarico di Ferro, Monza, Italy
| | - Mayka Sanchez
- IMPPC - Institute of Predictive and Personalized Medicine of Cancer, Badalona, Barcelona, Spain; IJC - Josep Carreras Leukemia Research Institute, Barcelona, Spain
| | - Dorine W Swinkels
- Department of Laboratory Medicine, Laboratory of Genetic, Endocrine and Metabolic Diseases (LGEM 830) Radboud University Medical Centre, Nijmegen, The Netherlands; Hemochromatose Vereniging Nederland, Leidschendam, The Netherlands
| | - Ketil Toska
- Norwegian Haemochromatosis Association, Bergen, Norway
| | - Judit Varkonyi
- 3rd Department of Internal Medicine, Semmelweis University, Budapest, Hungary; Hemokromatozisos Betegek Eyesülete, Budapest, Hungary
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Marques O, Porto G, Rêma A, Faria F, Pinto J, da Silva B, Lopes C. Iron (De)Regulation in Breast Cancer: a Role for Stromal Inflammatory Cells in the Tumor Microenvironment. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu067.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pinto JP, Arezes J, Dias V, Oliveira S, Vieira I, Costa M, Vos M, Carlsson A, Rikers Y, Rangel M, Porto G. Physiological implications of NTBI uptake by T lymphocytes. Front Pharmacol 2014; 5:24. [PMID: 24616700 PMCID: PMC3935319 DOI: 10.3389/fphar.2014.00024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 02/11/2014] [Indexed: 12/29/2022] Open
Abstract
In iron overload disorders a significant fraction of the total iron circulates in the plasma as low molecular weight complexes not bound to transferrin, known as non-transferrin-bound iron (NTBI). By catalyzing the formation of free radicals, NTBI accumulation results in oxidative stress and cellular damage, being a major cause of organ toxicity. NTBI is rapidly and preferentially cleared from circulation by the liver and the myocardium, the main disease targets in iron overload conditions. We have recently demonstrated that human peripheral blood T lymphocytes take up NTBI in vitro, with a pattern that resembles that of hepatocytes. Since T lymphocytes constitute a numerically important component of the circulating cell pool, these findings support a putative role for this cell type in the systemic protection against iron toxicity. Here we tested the hypothesis that the circulating peripheral blood T lymphocyte pool constitutes an important storage compartment for NTBI and is thus a modifier of NTBI deposition in target organs. First we show that NTBI uptake by human T lymphocytes increases the expression of the iron-storage protein ferritin and of the iron exporter ferroportin via an IRE-dependent mechanism. NTBI retention by T lymphocytes is shown to be critically controlled by the hepcidin-mediated modulation of ferroportin both in vitro and in vivo. Finally, the protective effect of T lymphocytes was tested by analyzing the patterns of iron accumulation in the T lymphocyte-deficient mouse model Foxn1nu before and after reconstitution with T lymphocytes by adoptive transfer. The results confirmed a significant increase of liver and pancreas iron accumulation in T lymphocyte-deficient mice. NTBI accumulation in the liver and spleen was prevented by reconstitution with syngeneic T lymphocytes. Altogether, our results demonstrate that T lymphocytes are important components of a circulating “NTBI storage compartment” and show its physiological relevance as a modifier of tissue iron overload.
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Affiliation(s)
- Jorge P Pinto
- Molecular and Cellular Biology Division, Basic and Clinical Research on Iron Biology, Instituto de Biologia Molecular e Celular, Universidade do Porto Porto, Portugal
| | - João Arezes
- Molecular and Cellular Biology Division, Basic and Clinical Research on Iron Biology, Instituto de Biologia Molecular e Celular, Universidade do Porto Porto, Portugal
| | - Vera Dias
- Molecular and Cellular Biology Division, Basic and Clinical Research on Iron Biology, Instituto de Biologia Molecular e Celular, Universidade do Porto Porto, Portugal
| | - Susana Oliveira
- Molecular and Cellular Biology Division, Basic and Clinical Research on Iron Biology, Instituto de Biologia Molecular e Celular, Universidade do Porto Porto, Portugal
| | - Inês Vieira
- Molecular and Cellular Biology Division, Basic and Clinical Research on Iron Biology, Instituto de Biologia Molecular e Celular, Universidade do Porto Porto, Portugal
| | - Mónica Costa
- Molecular and Cellular Biology Division, Basic and Clinical Research on Iron Biology, Instituto de Biologia Molecular e Celular, Universidade do Porto Porto, Portugal ; Faculdade de Medicina, Universidade do Porto Porto, Portugal
| | | | | | | | - Maria Rangel
- Chemistry Department, REQUIMTE, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto Porto, Portugal
| | - Graça Porto
- Molecular and Cellular Biology Division, Basic and Clinical Research on Iron Biology, Instituto de Biologia Molecular e Celular, Universidade do Porto Porto, Portugal ; Clinical Hematology, CHP-HSA - Santo António General Hospital Porto, Portugal ; Molecular Immunology and Pathology, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto Porto, Portugal
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Couto D, Freitas M, Vilas-Boas V, Dias I, Porto G, Lopez-Quintela MA, Rivas J, Freitas P, Carvalho F, Fernandes E. Interaction of polyacrylic acid coated and non-coated iron oxide nanoparticles with human neutrophils. Toxicol Lett 2014; 225:57-65. [PMID: 24291037 DOI: 10.1016/j.toxlet.2013.11.020] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 11/17/2013] [Accepted: 11/18/2013] [Indexed: 10/26/2022]
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Ribeiro D, Freitas M, Tomé SM, Silva AMS, Porto G, Cabrita EJ, Marques MMB, Fernandes E. Inhibition of LOX by flavonoids: a structure-activity relationship study. Eur J Med Chem 2014; 72:137-45. [PMID: 24368208 DOI: 10.1016/j.ejmech.2013.11.030] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 11/25/2013] [Accepted: 11/30/2013] [Indexed: 12/14/2022]
Abstract
The lipoxygenase (LOX) products have been identified as mediators of a series of inflammatory diseases, namely rheumatoid arthritis, inflammatory bowel disease, psoriasis, allergic rhinitis, atherosclerosis and certain types of cancer. Hence, LOX inhibitors are of interest for the modulation of these phenomena and resolution of the inflammatory processes. During LOX activity, peroxyl radical complexes are part of the reaction and may function as sources of free radicals. Thus antioxidants, such as flavonoids, capable of inhibiting lipid peroxidation and scavenging free radicals, may act as LOX inhibitors. The aim of this work was to assess the structure-activity relationship among a series of flavonoids concerning 5-LOX inhibition, through a systematic study of the inhibition of the formation of LTB4 in human neutrophils. The type of inhibition of the flavonoids was further studied using soybean LOX, type I, and Saturation Transfer Difference (1)H NMR (STD-(1)H NMR) was used to characterize the binding epitopes of the compounds to LOX-1. The obtained results reinforce flavonoids as effective inhibitors of LTB4 production in human neutrophils. It was also possible to establish a structure/activity relationship for the inhibitory activity and the type of inhibition.
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Affiliation(s)
- Daniela Ribeiro
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira n° 228, 4050-313 Porto, Portugal
| | - Marisa Freitas
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira n° 228, 4050-313 Porto, Portugal
| | - Sara M Tomé
- Departamento de Química & QOPNA, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Artur M S Silva
- Departamento de Química & QOPNA, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Graça Porto
- Hematologia Clínica, Hospital Geral de Santo António, 4050-011 Porto, Portugal
| | - Eurico J Cabrita
- Departamento de Química, REQUIMTE/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Lisboa, Portugal
| | - M Manuel B Marques
- Departamento de Química, REQUIMTE/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Lisboa, Portugal
| | - Eduarda Fernandes
- REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira n° 228, 4050-313 Porto, Portugal.
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Nazareth T, Teodósio R, Porto G, Gonçalves L, Seixas G, Silva AC, Sousa CA. Strengthening the perception-assessment tools for dengue prevention: a cross-sectional survey in a temperate region (Madeira, Portugal). BMC Public Health 2014; 14:39. [PMID: 24428823 PMCID: PMC3905660 DOI: 10.1186/1471-2458-14-39] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 12/17/2013] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Community participation is mandatory in the prevention of Dengue outbreaks. Taking public views into account is crucial to guide more effective planning and quicker community participation in preventing campaigns. This study aims to assess community perceptions of Madeira population in order to explore their involvement in the A. aegypti's control and reinforce health-educational planning. Due to the lack of accurate methodologies for measuring perception, a new tool to assess the community's perceptions was built. METHODS A cross-sectional survey was performed in the Island's aegypti-infested area, exploring residents' perceptions regarding most critical community behaviour: aegypti-source reduction and their domestic aegypti-breeding sites. A novel tool defining five essential topics which underlie the source reduction's awareness and accession was built, herein called Essential-Perception (EP) analysis. RESULTS Of 1276 individuals, 1182 completed the questionnaire (92 · 6%). EP-Score analysis revealed that community's perceptions were scarce, inconsistent and possibly incorrect. Most of the population (99 · 6%) did not completely understood the five essential topics explored. An average of 54 · 2% of residents only partially understood each essential topic, revealing inconsistencies in their understanding. Each resident apparently believed in an average of four false assumptions/myths. Significant association (p<0.001) was found between both the EP-Score level and the domestic presence of breeding sites, supporting the validity of this EP-analysis. Aedes aegypti's breeding sites, consisting of décor/leisure containers, presented an atypical pattern of infestation comparing with dengue prone regions. CONCLUSIONS The studied population was not prepared for being fully engaged in dengue prevention. Evidences suggest that EP-methodology was efficient and accurate in assessing the community perception and its compliance to practices. Moreover, it suggested a list of myths that could persist in the community. This is the first study reporting an aegypti-entomological pattern and community's perception in a developed dengue-prone region. Tailored messages considering findings of this study are recommended to be used in future campaigns in order to more effectively impact the community perception and behaviour.
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Affiliation(s)
- Teresa Nazareth
- GABBA Doctoral Program, ICBAS, Abel Salazar Institute for the Biomedical Sciences, University of Porto, Porto, Portugal
- Unidade Clínica Tropical, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Rosa Teodósio
- Unidade Clínica Tropical, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Centro de Malária e Doenças Tropicais, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Graça Porto
- GABBA Doctoral Program, ICBAS, Abel Salazar Institute for the Biomedical Sciences, University of Porto, Porto, Portugal
- IBMC, Institute for Molecular and Cellular Biology, Porto, Portugal
| | - Luzia Gonçalves
- Unidade de Saúde Pública e Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Centro de Estatística e Aplicações da Universidade de Lisboa (CEAUL), Universidade de Lisboa, Lisboa, Portugal
| | - Gonçalo Seixas
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Ana Clara Silva
- Departamento de Saúde, Planeamento e Administração Geral, Instituto de Administração da Saúde e Assuntos Sociais, IP-RAM, Funchal, Portugal
| | - Carla Alexandra Sousa
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Unidade de Parasitologia e Microbiologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
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Leandro B, Paneque M, Sequeiros J, Porto G. Insufficient Referral for Genetic Counseling in the Management of Hereditary Haemochromatosis in Portugal: A Study of Perceptions of Health Professionals Requesting HFE Genotyping. J Genet Couns 2014; 23:770-7. [DOI: 10.1007/s10897-013-9681-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 12/11/2013] [Indexed: 01/04/2023]
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42
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Costa M, Cruz E, Barton JC, Thorstensen K, Morais S, da Silva BM, Pinto JP, Vieira CP, Vieira J, Acton RT, Porto G. Effects of highly conserved major histocompatibility complex (MHC) extended haplotypes on iron and low CD8+ T lymphocyte phenotypes in HFE C282Y homozygous hemochromatosis patients from three geographically distant areas. PLoS One 2013; 8:e79990. [PMID: 24282517 PMCID: PMC3839968 DOI: 10.1371/journal.pone.0079990] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 10/02/2013] [Indexed: 12/16/2022] Open
Abstract
Hereditary Hemochromatosis (HH) is a recessively inherited disorder of iron overload occurring commonly in subjects homozygous for the C282Y mutation in HFE gene localized on chromosome 6p21.3 in linkage disequilibrium with the human leukocyte antigen (HLA)-A locus. Although its genetic homogeneity, the phenotypic expression is variable suggesting the presence of modifying factors. One such genetic factor, a SNP microhaplotype named A-A-T, was recently found to be associated with a more severe phenotype and also with low CD8+T-lymphocyte numbers. The present study aimed to test whether the predictive value of the A-A-T microhaplotype remained in other population settings. In this study of 304 HH patients from 3 geographically distant populations (Porto, Portugal 65; Alabama, USA 57; Nord-Trøndelag, Norway 182), the extended haplotypes involving A-A-T were studied in 608 chromosomes and the CD8+ T-lymphocyte numbers were determined in all subjects. Patients from Porto had a more severe phenotype than those from other settings. Patients with A-A-T seemed on average to have greater iron stores (p = 0.021), but significant differences were not confirmed in the 3 separate populations. Low CD8+ T-lymphocytes were associated with HLA-A*03-A-A-T in Porto and Alabama patients but not in the greater series from Nord-Trøndelag. Although A-A-T may signal a more severe iron phenotype, this study was unable to prove such an association in all population settings, precluding its use as a universal predictive marker of iron overload in HH. Interestingly, the association between A-A-T and CD8+ T-lymphocytes, which was confirmed in Porto and Alabama patients, was not observed in Nord-Trøndelag patients, showing that common HLA haplotypes like A*01–B*08 or A*03–B*07 segregating with HFE/C282Y in the three populations may carry different messages. These findings further strengthen the relevance of HH as a good disease model to search for novel candidate loci associated with the genetic transmission of CD8+ T-lymphocyte numbers.
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Affiliation(s)
- Mónica Costa
- Basic and Clinical Research on Iron Biology (BCRIB), Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
| | - Eugénia Cruz
- Basic and Clinical Research on Iron Biology (BCRIB), Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
- Clinical Hematology, Santo António Hospital – Centro Hospitalar do Porto, Porto, Portugal
| | - James C. Barton
- Southern Iron Disorders Center and Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Ketil Thorstensen
- Department of Medical Biochemistry, St. Olav Hospital, Trondheim, Norway
| | - Sandra Morais
- Multidisciplinary Unit of Biomedical Investigation (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, Porto, Portugal
- Internal Medicine, Pedro Hispano Hospital, Matosinhos, Portugal
| | - Berta M. da Silva
- Multidisciplinary Unit of Biomedical Investigation (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Jorge P. Pinto
- Basic and Clinical Research on Iron Biology (BCRIB), Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
| | - Cristina P. Vieira
- Evolutionary Systems Biology, Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
| | - Jorge Vieira
- Molecular Evolution, Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
| | - Ronald T. Acton
- Southern Iron Disorders Center and Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
- Department of Microbiology and Department of Epidemiology and International Health, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Graça Porto
- Basic and Clinical Research on Iron Biology (BCRIB), Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal
- Clinical Hematology, Santo António Hospital – Centro Hospitalar do Porto, Porto, Portugal
- Molecular Pathology and Immunology, Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, Porto, Portugal
- * E-mail:
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Arezes J, Costa M, Vieira I, Dias V, Kong XL, Fernandes R, Vos M, Carlsson A, Rikers Y, Porto G, Rangel M, Hider RC, Pinto JP. Non-transferrin-bound iron (NTBI) uptake by T lymphocytes: evidence for the selective acquisition of oligomeric ferric citrate species. PLoS One 2013; 8:e79870. [PMID: 24278199 PMCID: PMC3836815 DOI: 10.1371/journal.pone.0079870] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Accepted: 09/27/2013] [Indexed: 02/06/2023] Open
Abstract
Iron is an essential nutrient in several biological processes such as oxygen transport, DNA replication and erythropoiesis. Plasma iron normally circulates bound to transferrin. In iron overload disorders, however, iron concentrations exceed transferrin binding capacity and iron appears complexed with low molecular weight molecules, known as non-transferrin-bound iron (NTBI). NTBI is responsible for the toxicity associated with iron-overload pathologies but the mechanisms leading to NTBI uptake are not fully understood. Here we show for the first time that T lymphocytes are able to take up and accumulate NTBI in a manner that resembles that of hepatocytes. Moreover, we show that both hepatocytes and T lymphocytes take up the oligomeric Fe3Cit3 preferentially to other iron-citrate species, suggesting the existence of a selective NTBI carrier. These results provide a tool for the identification of the still elusive ferric-citrate cellular carrier and may also open a new pathway towards the design of more efficient iron chelators for the treatment of iron overload disorders.
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Affiliation(s)
- Joao Arezes
- Basic and Clinical Research on Iron Biology, IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- * E-mail:
| | - Monica Costa
- Basic and Clinical Research on Iron Biology, IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Ines Vieira
- Basic and Clinical Research on Iron Biology, IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Vera Dias
- Basic and Clinical Research on Iron Biology, IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Xiao L. Kong
- Pharmaceutical Sciences Research Division, King's College London, London, United Kingdom
| | - Rui Fernandes
- ATAF, IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Matthijn Vos
- Europe NanoPort, FEI, Eindhoven, The Netherlands
| | | | - Yuri Rikers
- Europe NanoPort, FEI, Eindhoven, The Netherlands
| | - Graça Porto
- Basic and Clinical Research on Iron Biology, IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Clinical Hematology, CHP-HSA - Santo António General Hospital, Porto, Portugal
- Molecular Immunology and Pathology, ICBAS - Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Maria Rangel
- REQUIMTE, ICBAS - Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Robert C. Hider
- Pharmaceutical Sciences Research Division, King's College London, London, United Kingdom
| | - Jorge P. Pinto
- Basic and Clinical Research on Iron Biology, IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
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Crespo ÂC, Silva B, Marques L, Marcelino E, Maruta C, Costa S, Timóteo A, Vilares A, Couto FS, Faustino P, Correia AP, Verdelho A, Porto G, Guerreiro M, Herrero A, Costa C, de Mendonça A, Costa L, Martins M. Genetic and biochemical markers in patients with Alzheimer's disease support a concerted systemic iron homeostasis dysregulation. Neurobiol Aging 2013; 35:777-85. [PMID: 24199959 DOI: 10.1016/j.neurobiolaging.2013.10.078] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 10/01/2013] [Accepted: 10/12/2013] [Indexed: 11/24/2022]
Abstract
Alzheimer's disease (AD) is the most common form of dementia in the elderly individuals, resulting from a complex interaction between environmental and genetic factors. Impaired brain iron homeostasis has been recognized as an important mechanism underlying the pathogenesis of this disease. Nevertheless, the knowledge gathered so far at the systemic level is clearly insufficient. Herein, we used an integrative approach to study iron metabolism in the periphery, at both genotypic and phenotypic levels, in a sample of 116 patients with AD and 89 healthy control subjects. To assess the potential impact of iron metabolism on the risk of developing AD, genetic analyses were performed along with the evaluation of the iron status profile in peripheral blood by biochemical and gene expression studies. The results obtained showed a significant decrease of serum iron, ferritin, and transferrin concentrations in patients compared with the control subjects. Also, a significant decrease of ferroportin (SLC40A1) and both transferrin receptors TFRC and TFR2 transcripts was found in peripheral blood mononuclear cells from patients. At the genetic level, significant associations with AD were found for single nucleotide polymorphisms in TF, TFR2, ACO1, and SLC40A1 genes. Apolipoprotein E gene, a well-known risk factor for AD, was also found significantly associated with the disease in this study. Taken together, we hypothesize that the alterations on systemic iron status observed in patients could reflect an iron homeostasis dysregulation, particularly in cellular iron efflux. The intracellular iron accumulation would lead to a rise in oxidative damage, contributing to AD pathophysiology.
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Affiliation(s)
- Ângela C Crespo
- Health Promotion and Prevention of Noncommunicable Diseases Department, Instituto Nacional de Saúde Dr Ricardo Jorge, Lisboa, Portugal; Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Bruno Silva
- Human Genetics Department, Instituto Nacional de Saúde Dr Ricardo Jorge, Lisboa, Portugal
| | - Liliana Marques
- Health Promotion and Prevention of Noncommunicable Diseases Department, Instituto Nacional de Saúde Dr Ricardo Jorge, Lisboa, Portugal; Center for Biodiversity, Functional and Integrative Genomics, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal
| | - Erica Marcelino
- Neurological Clinical Research Unit, Instituto de Medicina Molecular, Lisboa, Portugal
| | - Carolina Maruta
- Neurological Clinical Research Unit, Instituto de Medicina Molecular, Lisboa, Portugal
| | - Sónia Costa
- Neurology Department, Hospital Prof. Dr Fernando Fonseca, E.P.E., Amadora, Portugal
| | - Angela Timóteo
- Neurology Department, Hospital Prof. Dr Fernando Fonseca, E.P.E., Amadora, Portugal
| | - Arminda Vilares
- Health Promotion and Prevention of Noncommunicable Diseases Department, Instituto Nacional de Saúde Dr Ricardo Jorge, Lisboa, Portugal
| | | | - Paula Faustino
- Human Genetics Department, Instituto Nacional de Saúde Dr Ricardo Jorge, Lisboa, Portugal
| | | | - Ana Verdelho
- Neurological Clinical Research Unit, Instituto de Medicina Molecular, Lisboa, Portugal
| | - Graça Porto
- Center for Predictive and Preventive Genetics, Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - Manuela Guerreiro
- Neurological Clinical Research Unit, Instituto de Medicina Molecular, Lisboa, Portugal
| | - Ana Herrero
- Neurology Department, Hospital Prof. Dr Fernando Fonseca, E.P.E., Amadora, Portugal
| | - Cristina Costa
- Neurology Department, Hospital Prof. Dr Fernando Fonseca, E.P.E., Amadora, Portugal
| | - Alexandre de Mendonça
- Neurological Clinical Research Unit, Instituto de Medicina Molecular, Lisboa, Portugal
| | - Luciana Costa
- Health Promotion and Prevention of Noncommunicable Diseases Department, Instituto Nacional de Saúde Dr Ricardo Jorge, Lisboa, Portugal; Center for Biodiversity, Functional and Integrative Genomics, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal
| | - Madalena Martins
- Neurological Clinical Research Unit, Instituto de Medicina Molecular, Lisboa, Portugal; Instituto Gulbenkian de Ciência, Oeiras, Portugal.
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Bettencourt BF, Rocha FL, Alves H, Amorim R, Caetano-Lopes J, Vieira-Sousa E, Pimentel-Santos F, Lima M, Porto G, Branco JC, Fonseca JE, Bruges-Armas J. Protective effect of an ERAP1 haplotype in ankylosing spondylitis: investigating non-MHC genes in HLA-B27-positive individuals. Rheumatology (Oxford) 2013; 52:2168-76. [DOI: 10.1093/rheumatology/ket269] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ribeiro D, Freitas M, Tomé SM, Silva AMS, Porto G, Fernandes E. Modulation of human neutrophils' oxidative burst by flavonoids. Eur J Med Chem 2013; 67:280-92. [PMID: 23871908 DOI: 10.1016/j.ejmech.2013.06.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 06/02/2013] [Accepted: 06/03/2013] [Indexed: 10/26/2022]
Abstract
Inflammation is a normal response towards tissue injury, but may become deleterious to the organism if uncontrolled. The overproduction of reactive species during the inflammatory process may cause or magnify the damage at inflammatory sites. Flavonoids have been suggested as therapeutic agents to avoid such damage, as these compounds exhibit anti-inflammatory activity, through the modulation of oxidative stress and signalling pathways. Both effects may attenuate neutrophils' activities at inflammatory sites. In this study, we investigated the structure/activity relationship of a series of flavonoids on the oxidative burst of human neutrophils in vitro, as a measure of its anti-inflammatory potential. Neutrophils were stimulated with phorbol-12-myristate-13-acetate, and fluorescence and chemiluminescence techniques were used to evaluate the generation of reactive oxygen species. All the tested flavonoids revealed the ability to modulate the neutrophil's oxidative burst. From the obtained results, the pivotal role of the catechol group in the B-ring was evidenced as well as the minor importance of the hydroxylations in the A-ring, which did not appear to be determinant for the activity, although clearly influencing the lipophilicity of the tested flavonoids. It is also clarified the importance of the methylation in the OH group at the B-ring catechol moiety. In conclusion, the obtained results uncover new possible strategies for the resolution of inflammatory processes, using flavonoids to modulate neutrophil's oxidative burst.
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Affiliation(s)
- Daniela Ribeiro
- REQUIMTE, Laboratório de Química Aplicada, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal
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Yildirim T, Yilmaz R, Altindal M, Turkmen E, Arici M, Altun B, Erdem Y, Guliyev O, Erkmen Uyar M, Tutal E, Bal Z, Sezer S, Erkmen Uyar M, Bal U, Bal Z, Tutal E, Say n B, Guliyev O, Erdemir B, Sezer S, O'Rourke-Potowki A, Gauge N, Penny H, Cronin A, Frame S, Goldsmith DJ, Yagan JA, Chandraker A, Velickovic Radovanovic RM, Catic Djordjevic A, Mitic B, Stefanovic N, Cvetkovic T, Serpieri N, Grosjean F, Sileno G, Torreggiani M, Esposito V, Mangione F, Abelli M, Castoldi F, Catucci D, Esposito C, Dal Canton A, Vatazin AV, Zulkarnaev AB, Borst C, Liu Y, Thoning J, Tepel M, Libetta C, Margiotta E, Borettaz I, Canevari M, Martinelli C, Lainu E, Abelli M, Meloni F, Sepe V, Dal Canton A, Miguel Costa R, Vasquez Martul E, Reboredo J, Rivera C, Simonato F, Tognarelli G, Daidola G, Gallo E, Burdese M, Cantaluppi V, Biancone L, Segoloni GP, Burdese M, Priora M, Messina M, Tamagnone M, Daidola G, Linsalata A, Lavacca A, Biancone L, Segoloni G, Zuidema W, Erdman R, van de Wetering J, Dor F, Roodnat J, Massey E, Timmerman L, IJzermans J, Weimar W, Goldsmith DJ, Sibley-Allen C, Hilton R, Moghul M, Burnapp L, Blake G, Koo TY, Park JS, Park HC, Kim GH, Lee CH, Oh IH, Kang CM, Hwang JK, Park SC, Choi BS, Chun HJ, Kim JI, Yang CW, Moon IS, Van Laecke S, Van Biesen W, Nagler EV, Taes Y, Peeters P, Vanholder R, Pruthi R, Ravanan R, Casula A, Harber M, Roderick P, Fogarty D, Cho A, Shin JH, Jang HR, Lee JE, Huh W, Kim DJK, Oh HY, Kim YG, Sancho Calabuig A, Gavela Martinez E, Kanter Berga J, Beltran Catalan S, Avila Bernabeu AI, Pallardo Mateu LM, Gonzalez E, Polanco N, Molina M, Gutierrez E, Garcia Puente L, Sevillano A, Morales E, Praga M, Andres A, Banasik M, Boratynska M, Koscielska-Kasprzak K, Bartoszek D, Myszka M, Zmonarski S, Nowakowska B, Wawrzyniak E, Halon A, Chudoba P, Klinger M, Rojas-Rivera J, Gonzalez E, Polanco N, Morales E, Andres A, Morales JM, Egido J, Praga M, Kopecky CM, Haidinger M, Kaltenecker C, Antlanger M, Marsche G, Holzer M, Kovarik J, Werzowa J, Hecking M, Saemann MD, Hwang JK, Kim JM, Koh ES, Chung BH, Park SC, Choi BS, Kim JI, Yang CW, Kim YS, Moon IS, Banasik M, Boratynska M, Koscielska-Kasprzak K, Krajewska M, Mazanowska O, Kaminska D, Bartoszek D, Zabinska M, Halon A, Malkiewicz B, Patrzalek D, Klinger M, Sulowicz J, Szostek S, Wojas-Pelc A, Ignacak E, Sulowicz W, Bellizzi V, Calella P, Cupisti A, Capitanini A, D'Alessandro C, Giannese D, Camocardi A, Conte G, Barsotti M, Bilancio G, Luciani R, Locsey L, Seres I, Kovacs D, Asztalos L, Paragh G, Wohlfahrtova M, Balaz P, Rokosny S, Wohlfahrt P, Bartonova A, Viklicky O, Kers J, Geskus RB, Meijer LJ, Bemelman F, ten Berge IJM, Florquin S, Hwang JC, Jiang MY, Lu YH, Weng SF, Testa A, Porto G, Sanguedolce M, Spoto B, Parlongo R, Pisano A, Enia G, Tripepi G, Zoccali C, Zuidema W, Mamode N, Lennerling A, Citterio F, Massey E, Van Assche K, Sterckx S, Frunza M, Jung H, Pascalev A, Johnson R, Loven C, Weimar W, Dor F, Soleymanian T, Keyvani H, Jazayeri SM, Fazeli Z, Ghamari S, Mahabadi M, Chegeni V, Najafi I, Ganji MR, Meys KME, Groothoff JW, Jager K, Schaefer F, Tonshoff B, Mota C, Cransberg K, van Stralen K, Gurluler E, Gures N, Alim A, Gurkan A, Cakir U, Berber I, Van Laecke S, Caluwe R, Nagler E, Van Biesen W, Peeters P, Van Vlem B, Vanholder R, Sulowicz J, Wojas-Pelc A, Ignacak E, Betkowska-Prokop A, Kuzniewski M, Krzanowski M, Sulowicz W, Masson I, Flamant M, Maillard N, Cavalier E, Moranne O, Alamartine E, Mariat C, Delanaye P, Canas Sole LL, Iglesias Alvarez E, Pastor MCMC, Moreno Flores FF, Abujder VV, Graterol FF, Bonet Sol JJ, Lauzurica Valdemoros RR, Yoshikawa M, Kitamura K, Nakai K, Goto S, Fujii H, Ishimura T, Takeda M, Fujisawa M, Nishi S, Prasad N, Gurjer D, Bhadauria D, Gupta A, Sharma R, Kaul A, Cybulla M, West M, Nicholls K, Torras J, Sunder-Plassmann G, Feriozzi S, Lo S, Wong PYH, Ip D, Wong CK, Chow VCC, Mo SKL, Molnar M, Ujszaszi A, Czira ME, Novak M, Mucsi I, Cruzado JM, Coelho S, Porta N, Bestard O, Melilli E, Taco O, Rivas I, Grinyo J, Pouteau LM, N'Guyen JM, Hami A, Hourmant M, Ghahramani N, Karparvar Z, Shadrou S, Ghahramani M, Fauvel JP, Hadj-Aissa A, Buron F, Morelon E, Ducher M, Heine C, Glander P, Neumayer HH, Budde K, Liefeldt L, Montero N, Webster AC, Royuela A, Zamora J, Crespo M, Pascual J, Adema AY, van Dorp WTH, Mallat MJK, de Fijter HW, Kim YS, Hong YA, Chung BH, Park CW, Yang CW, Kim YS, Choi BS, Suleymanlar G, Uzundurukan Z, Kapuagas A, Sencan I, Akdag R, Pascual J, Torio A, Mas V, Perez-Saez MJ, Mir M, Faura A, Montes-Ares O, Checa MD, Crespo M, Sawinski D, Trofe-Clark J, Sparkes T, Patel P, Goral S, Bloom R, Kim HJ, Park SJ, Kim TH, Kim YW, Kim YH, Kang SW, Abdel Halim M, Gheith O, Al-Otaibi T, Mosaad A, Awadeen W, Said T, Nair P, Nampoory MRN. Transplantation: clinical studies - A. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Freitas M, Costa VM, Ribeiro D, Couto D, Porto G, Carvalho F, Fernandes E. Acetaminophen prevents oxidative burst and delays apoptosis in human neutrophils. Toxicol Lett 2013; 219:170-7. [PMID: 23518321 DOI: 10.1016/j.toxlet.2013.03.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 02/14/2013] [Accepted: 03/10/2013] [Indexed: 10/27/2022]
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Marques O, Canadas A, Rêma A, Faria F, Simão J, Gärtner F, Martins da Silva B, Porto G, Lopes C. Hepcidin Expression in Canine and Feline Mammary Tumours. J Comp Pathol 2013. [DOI: 10.1016/j.jcpa.2012.11.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Roetto A, Porto G. A novel mutation in the CUB sequence of matriptase-2 (TMPRSS6) is implicated in iron-resistant iron deficiency anaemia - response to Jasperset al. Br J Haematol 2012; 160:566-7. [DOI: 10.1111/bjh.12145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Antonella Roetto
- Department of Clinical and Biological Sciences; University of Torino, AOU San Luigi Gonzaga; Orbassano; Torino; Italy
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