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Soltanieh S, Salavatizadeh M, Gaman M, Kord Varkaneh H, Tan SC, Prabahar K, Lozovanu OD, Santos HO, Hekmatdoost A. Association between hepcidin levels and inflammatory bowel disease: A systematic review and meta-analysis of observational studies. Food Sci Nutr 2024; 12:4581-4593. [PMID: 39055215 PMCID: PMC11266881 DOI: 10.1002/fsn3.4146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 03/12/2024] [Accepted: 03/18/2024] [Indexed: 07/27/2024] Open
Abstract
Hepcidin has a crucial role in iron homeostasis upon inflammatory conditions such as inflammatory bowel disease (IBD). Thus, we conducted a systematic review and meta-analysis to determine the overall association between serum hepcidin concentrations and IBD. Based on the preferred reporting items for systematic review and meta-analysis (PRISMA) protocols, an electronic literature search was conducted on PubMed/MEDLINE, Scopus, and Web of Science until June 2020. Studies were deemed eligible for inclusion if they met the following criteria: (1) diagnosis of IBD, (2) observational design, and (3) measured serum hepcidin and prohepcidin concentrations in IBD patients and control group. Overall, 10 studies including 1184 participants were evaluated. Random-effects meta-analysis revealed that subjects with IBD had 7.22 ng/mL (95% CI: 2.10, 12.34; p = .006) higher serum hepcidin concentrations compared to control groups. A nonsignificantly lower serum prohepcidin concentration (0.522 ng/mL, 95% CI: -1.983 to 0.939; p = .484) was found for IBD patients compared to healthy subjects. However, there was significant heterogeneity among the studies regarding both hepcidin (I 2 = 98%, p < .001) and prohepcidin levels (I 2 = 96%, p < .001), respectively. In an age-based subgroup analysis, patients aged ≥18 years with IBD displayed higher serum hepcidin levels when compared to healthy individuals (22.36 ng/mL, 95% CI, 2.12-42.61; p = .030). Hepcidin concentrations are elevated in subjects with IBD; however, the clinical relevance of this finding requires further evaluation in future investigations as the increase is relatively small compared to the wide range of normal hepcidin values.
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Affiliation(s)
- Samira Soltanieh
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food TechnologyShahid Beheshti University of Medical SciencesTehranIran
| | - Marieh Salavatizadeh
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food TechnologyShahid Beheshti University of Medical SciencesTehranIran
| | - Mihnea‐Alexandru Gaman
- Faculty of Medicine, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania & Department of Hematology, Centre of Hematology and Bone Marrow TransplantationFundeni Clinical InstituteBucharestRomania
| | - Hamed Kord Varkaneh
- Department of Nutrition and Food Hygiene, Nutrition Health Research CenterHamadan University of Medical SciencesHamadanIran
| | - Shing Cheng Tan
- UKM Medical Molecular Biology InstituteUniversiti Kebangsaan MalaysiaKuala LumpurMalaysia
| | - Kousalya Prabahar
- Department of Pharmacy Practice, Faculty of PharmacyUniversity of TabukTabukSaudi Arabia
| | | | - Heitor O. Santos
- School of MedicineFederal University of Uberlandia (UFU)UberlandiaBrazil
| | - Azita Hekmatdoost
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food TechnologyShahid Beheshti University of Medical SciencesTehranIran
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Petrović S, Tarabar D, Ćujić D, Stamenkovic D, Petrović M, Rančić N, Subota V, Perišić N, Bezmarević M. A Prospective Observational Study Analyzing the Diagnostic Value of Hepcidin-25 for Anemia in Patients with Inflammatory Bowel Diseases. Int J Mol Sci 2024; 25:3564. [PMID: 38612376 PMCID: PMC11011637 DOI: 10.3390/ijms25073564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/04/2024] [Accepted: 03/11/2024] [Indexed: 04/14/2024] Open
Abstract
Iron deficiency (IDA) and chronic disease (ACD) anemia are complications of inflammatory bowel diseases (IBDs). Therapeutic modalities in remission and active IBD depend on the type of anemia. This study evaluated the link between hepcidin-25, proinflammatory cytokines, and platelet activation markers as biomarkers of anemia and inflammation in active IBD and remission. This prospective observational study included 62 patients with IBD (49 with ulcerative colitis and 13 with Crohn's) and anemia. Patients were divided into Group I (no or minimal endoscopic signs of disease activity and IDA), Group II (moderate and major endoscopic signs of disease activity and mild ACD), and Control group (10 patients with IBD in remission, without anemia). We assessed the difference among groups in the levels of CRP, hemoglobin (Hgb), serum iron, ferritin, hepcidin-25, interleukins, TNF-α, IFN-γ, soluble CD40 ligand, and sP-selectin. Hepcidin-25 levels were significantly higher in Group II versus Group I (11.93 vs. 4.48 ng/mL, p < 0.001). Ferritin and CRP values showed similar patterns in IBD patients: significantly higher levels were observed in Group II (47.5 ng/mL and 13.68 mg/L) than in Group I (11.0 ng/mL and 3.39 mg/L) (p < 0.001). In Group II, hepcidin-25 was positively correlated with ferritin (ρ = 0.725, p < 0.001) and CRP (ρ = 0.502, p = 0.003). Ferritin was an independent variable influencing hepcidin-25 concentration in IBD patients, regardless of disease activity and severity of anemia. IBD hepcidin-25 best correlates with ferritin, and both parameters reflected inflammation extent and IBD activity.
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Affiliation(s)
- Stanko Petrović
- Medical Faculty of the Military Medical Academy, University of Defence, 11 000 Belgrade, Serbia; (D.S.); (M.P.); (N.P.); (M.B.)
- Clinic for Gastroenterology and Hepatology, Military Medical Academy, University of Defence, 11 000 Belgrade, Serbia
| | - Dino Tarabar
- Clinic for Gastroenterology, University Hospital Center “Dr. Dragiša Mišović”, 11 050 Belgrade, Serbia;
| | - Danica Ćujić
- Institute for Application of Nuclear Energy, University of Belgrade, 11 000 Belgrade, Serbia;
| | - Dusica Stamenkovic
- Medical Faculty of the Military Medical Academy, University of Defence, 11 000 Belgrade, Serbia; (D.S.); (M.P.); (N.P.); (M.B.)
- Department of Anesthesiology and Intensive Care, Military Medical Academy, 11 000 Belgrade, Serbia
| | - Marijana Petrović
- Medical Faculty of the Military Medical Academy, University of Defence, 11 000 Belgrade, Serbia; (D.S.); (M.P.); (N.P.); (M.B.)
- Clinic for Nephrology, Military Medical Academy, 11 050 Belgrade, Serbia
| | - Nemanja Rančić
- Centre for Clinical Pharmacology, Military Medical Academy, University of Defence, 11 000 Belgrade, Serbia;
| | - Vesna Subota
- Institute of Medical Biochemistry, Military Medical Academy, University of Defence, 11 000 Belgrade, Serbia;
| | - Nenad Perišić
- Medical Faculty of the Military Medical Academy, University of Defence, 11 000 Belgrade, Serbia; (D.S.); (M.P.); (N.P.); (M.B.)
- Clinic for Gastroenterology and Hepatology, Military Medical Academy, University of Defence, 11 000 Belgrade, Serbia
| | - Mihailo Bezmarević
- Medical Faculty of the Military Medical Academy, University of Defence, 11 000 Belgrade, Serbia; (D.S.); (M.P.); (N.P.); (M.B.)
- Unit for Perioperative Nutrition, Department of Hepatobiliary and Pancreatic Surgery, Clinic for General Surgery, Military Medical Academy, University of Defence, 11000 Belgrade, Serbia
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Ferrari F, Carini M, Zanella I, Treglia G, Luglio G, Bresciani R, Biasiotto G. Potential Diagnostic Role of Hepcidin in Anemic Patients Affected by Inflammatory Bowel Disease: A Systematic Review. Diagnostics (Basel) 2024; 14:375. [PMID: 38396414 PMCID: PMC10887700 DOI: 10.3390/diagnostics14040375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Anemia is the main extraintestinal comorbidity of Inflammatory Bowel Disease (IBD). Differentiating the type of anemia in these disorders is still a challenge. Hepcidin could be a promising biomarker to identify iron deficiency anemia (IDA), anemia of chronic disease (ACD) and the concomitant presence of both IDA and ACD. METHODS To evaluate the potential role of hepcidin dosage in the management of anemia in IBD patients, we performed a systematic review by a comprehensive literature analysis of original papers reporting the dosage of hepcidin in IBD patients. In all the articles reviewed, the dosage of ferritin was reported, and the correlation between hepcidin and ferritin has been used to compare these two biomarkers. RESULTS A total of 12 articles concerning the dosage of hepcidin in IBD were included, comprising in total of 976 patients. The results of the hepcidin values in IBD patients when compared with controls were conflicting. In fact, four articles described an increase in this biomarker, three showed a decrease and five did not find significant differences. The correlation with ferritin was positive and significant. In three studies, some differences between hepcidin dosages and ferritin levels indicate a possible role when IDA and ACD could be present at the same time. CONCLUSIONS Considering the contradictory data of the studies, the diagnostic role of hepcidin as a biomarker remains elusive in IBD patients. These differences could be due to the clinical characteristics of the patients enrolled that should be better defined in the future. A suitable clinical trial should be designed to outline the possible role of hepcidin in differentiating IDA, ACD and concomitant IDA and ACD in IBD patients. At the moment, ferritin still remains the best marker to diagnose these conditions, in addition to hemoglobin, transferrin saturation and CRP as recommended by the ECCO guidelines.
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Affiliation(s)
- Fabiana Ferrari
- Pediatrics, Mother’s and Baby’s Health Department, Poliambulanza Foundation Hospital Insitute, 25124 Brescia, Italy
| | - Mattia Carini
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
- Highly Specialized Laboratory, ASST Spedali Civili di Brescia, 25123 Brescia, Italy
| | - Isabella Zanella
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
- Section of Genetics and Cytogenetics, ASST Spedali Civili di Brescia, 25123 Brescia, Italy
| | - Giorgio Treglia
- Clinic of Nuclear Medicine, Imaging Institute of Southern Switzerland, Ente Ospedaliero Cantonale, 6501 Bellinzona, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, 1011 Lausanne, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, 6900 Lugano, Switzerland
| | - Gaetano Luglio
- Endoscopic Surgery Unit, Department of Medical and Surgical Gastrointestinal Disease, “Federico II” University, 80131 Naples, Italy
| | - Roberto Bresciani
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
- Highly Specialized Laboratory, ASST Spedali Civili di Brescia, 25123 Brescia, Italy
| | - Giorgio Biasiotto
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
- Highly Specialized Laboratory, ASST Spedali Civili di Brescia, 25123 Brescia, Italy
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Brittenham GM, Moir-Meyer G, Abuga KM, Datta-Mitra A, Cerami C, Green R, Pasricha SR, Atkinson SH. Biology of Anemia: A Public Health Perspective. J Nutr 2023; 153 Suppl 1:S7-S28. [PMID: 37778889 DOI: 10.1016/j.tjnut.2023.07.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 05/04/2023] [Accepted: 07/31/2023] [Indexed: 10/03/2023] Open
Abstract
Our goal is to present recent progress in understanding the biological mechanisms underlying anemia from a public health perspective. We describe important advances in understanding common causes of anemia and their interactions, including iron deficiency (ID), lack of other micronutrients, infection, inflammation, and genetic conditions. ID develops if the iron circulating in the blood cannot provide the amounts required for red blood cell production and tissue needs. ID anemia develops as iron-limited red blood cell production fails to maintain the hemoglobin concentration above the threshold used to define anemia. Globally, absolute ID (absent or reduced body iron stores that do not meet the need for iron of an individual but may respond to iron supplementation) contributes to only a limited proportion of anemia. Functional ID (adequate or increased iron stores that cannot meet the need for iron because of the effects of infection or inflammation and does not respond to iron supplementation) is frequently responsible for anemia in low- and middle-income countries. Absolute and functional ID may coexist. We highlight continued improvement in understanding the roles of infections and inflammation in causing a large proportion of anemia. Deficiencies of nutrients other than iron are less common but important in some settings. The importance of genetic conditions as causes of anemia depends upon the specific inherited red blood cell abnormalities and their prevalence in the settings examined. From a public health perspective, each setting has a distinctive composition of components underlying the common causes of anemia. We emphasize the coincidence between regions with a high prevalence of anemia attributed to ID (both absolute and functional), those with endemic infections, and those with widespread genetic conditions affecting red blood cells, especially in sub-Saharan Africa and regions in Asia and Oceania.
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Affiliation(s)
- Gary M Brittenham
- Department of Pediatrics, College of Physicians and Surgeons, Columbia University, New York, NY, United States.
| | - Gemma Moir-Meyer
- Population Health and Immunity Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville, VIC, Australia
| | - Kelvin Mokaya Abuga
- Kenya Medical Research Institute (KEMRI)-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Ananya Datta-Mitra
- Department of Pathology and Laboratory Medicine, University of California, Davis, CA, United States
| | - Carla Cerami
- The Medical Research Council Unit, The Gambia, London School of Hygiene and Tropical Medicine, London, UK
| | - Ralph Green
- Department of Pathology and Laboratory Medicine, University of California, Davis, CA, United States
| | - Sant-Rayn Pasricha
- Population Health and Immunity Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville, VIC, Australia; Diagnostic Haematology, The Royal Melbourne Hospital; and Clinical Haematology at the Peter MacCallum Cancer Centre and The Royal Melbourne Hospital, Parkville, VIC Australia
| | - Sarah H Atkinson
- Kenya Medical Research Institute (KEMRI)-Wellcome Trust Research Programme, Kilifi, Kenya; Department of Paediatrics, University of Oxford, Oxford, UK
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Elimeleh Y, Zittan E, Levy M, Rinawi F. Adherence to ECCO Guidelines for Management of Iron Deficiency and Anemia in Inflammatory Bowel Diseases Among Israeli Adult and Pediatric Gastroenterologists. J Pediatr Gastroenterol Nutr 2023; 77:634-639. [PMID: 37580868 DOI: 10.1097/mpg.0000000000003913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
OBJECTIVES The consensus guidelines of the European Crohn's and Colitis Organization (ECCO) for the diagnosis and treatment of iron deficiency anemia (IDA) were published in 2015. We examined the management practices of both adult gastroenterologists (AGs) and pediatric gastroenterologists (PGs) in Israel in treating ID among patients with inflammatory bowel disease (IBD). METHODS An 18-question multiple-choice anonymous questionnaire was electronically delivered to AGs and PGs. Questions explored 3 areas of interest: physician demographics, adherence to ECCO guidelines, and management practices of IDA in patients with IBD. RESULTS Completed questionnaires were returned by 72 AGs and 89 PGs. Practice setting and years of practice were similar. A large majority of AGs and PGs (89% and 92%, respectively) measure complete blood count (CBC) and serum ferritin (S-Fr) at least every 3 months in outpatients with active IBD, as recommended by the ECCO guidelines. In contrast, in IBD patients in remission, only 53% and 26% of AGs and PGs, respectively ( P < 0.001), reported adherence to ECCO guidelines, measuring CBC and S-Fr every 6 months. The ECCO treatment guidelines recommend that intravenous (IV) iron should be considered the first-line treatment in patients with clinically active IBD, with previous oral iron intolerance and those with a hemoglobin level <10 g/dL. Study results indicate that only 43% of AGs recommend IV iron for these indications, compared to 54% of PGs ( P > 0.1). CONCLUSIONS In this study we have demonstrated a relatively low level of adherence to ECCO guideline recommendations among both AGs and PGs, regarding the management of IDA in patients with IBD.
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Affiliation(s)
- Yotam Elimeleh
- From The Abraham and Sonia Rochlin IBD Unit, Department of Gastroenterology and Liver Diseases, Emek Medical Center, Afula, Israel
| | - Eran Zittan
- From The Abraham and Sonia Rochlin IBD Unit, Department of Gastroenterology and Liver Diseases, Emek Medical Center, Afula, Israel
- The Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Matthew Levy
- From The Abraham and Sonia Rochlin IBD Unit, Department of Gastroenterology and Liver Diseases, Emek Medical Center, Afula, Israel
- The Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Firas Rinawi
- the Pediatric Gastroenterology Unit, Emek Medical Center, Afula, Israel
- the Faculty of Medicine, Technion, Haifa, Israel
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Woźniak M, Borkowska A, Jastrzębska M, Sochal M, Małecka-Wojciesko E, Talar-Wojnarowska R. Clinical and Laboratory Characteristics of Anaemia in Hospitalized Patients with Inflammatory Bowel Disease. J Clin Med 2023; 12:jcm12072447. [PMID: 37048531 PMCID: PMC10095056 DOI: 10.3390/jcm12072447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/02/2023] [Accepted: 03/06/2023] [Indexed: 04/14/2023] Open
Abstract
Anaemia is the most common extraintestinal manifestation of inflammatory bowel disease (IBD). Due to its multifactorial etiopathogenesis, the differential diagnosis and treatment of anaemia in IBD is a significant clinical problem. The main aim of our study was to assess the usefulness of laboratory parameters, including hepcidin, in differential diagnoses of anaemia in hospitalized IBD patients. This study also estimated the impact of anaemia on the length of hospitalization and its relationship with clinical data of analyzed patients. The study included 118 adult patients diagnosed with IBD-55 with ulcerative colitis (UC) and 63 with Crohn's disease (CD). Anaemia was significantly more frequent in patients with CD-42 (66.7%)-compared to 31 (56.4%) patients with UC (p = 0.033). The prevalence of anaemia increased significantly with the severity of IBD and the extent of inflammatory changes in the endoscopic examination. Hospitalization time was significantly longer in patients with anaemia, especially in the group with UC. Ferritin concentrations < 30 ng/mL were found only in 15 (20.55%) IBD patients (9 with UC and 6 with CD), and ferritin < 100 ng/mL was observed in 22 (30.14%) patients, equally frequent with UC and CD (p > 0.05). Significantly higher concentrations of transferrin were observed in patients with anaemia in the course of UC compared to CD (2.58 ± 0.90 g/L vs. 2.15 ± 0.82 g/L; p = 0.037). On the other hand, saturation of transferrin < 16% was equally common in UC and CD patients. In our study, hepcidin levels in anaemic UC patients were significantly lower compared to UC without anaemia (p = 0.042), with no similar differences in CD independently of anaemia presence (p = 0.565). To conclude, we observed a high incidence of anaemia in patients with IBD and its significant impact on the length of hospitalization in UC. Routinely determined single laboratory parameters are not sufficient for the differential diagnosis of anaemia, and a complex laboratory assessment, including of hepcidin levels, is necessary for the full picture of anaemia in the course of IBD.
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Affiliation(s)
- Małgorzata Woźniak
- Department of Digestive Tract Diseases, Medical University of Lodz, 90-419 Lodz, Poland
| | - Anna Borkowska
- Department of Internal Diseases and Diabetology, Medical University of Lodz, 90-419 Lodz, Poland
| | - Marta Jastrzębska
- Department of Gastroenterology, Health Care Center, 26-200 Konskie, Poland
| | - Marcin Sochal
- Department of Sleep Medicine and Metabolic Disorders, Medical University of Lodz, 90-419 Lodz, Poland
| | - Ewa Małecka-Wojciesko
- Department of Digestive Tract Diseases, Medical University of Lodz, 90-419 Lodz, Poland
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Loveikyte R, Bourgonje AR, van der Reijden JJ, Bulthuis MLC, Hawinkels LJAC, Visschedijk MC, Festen EAM, van Dullemen HM, Weersma RK, van Goor H, van der Meulen-de Jong AE, Dijkstra G. Hepcidin and Iron Status in Patients With Inflammatory Bowel Disease Undergoing Induction Therapy With Vedolizumab or Infliximab. Inflamm Bowel Dis 2023:7030568. [PMID: 36748574 PMCID: PMC10393210 DOI: 10.1093/ibd/izad010] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Indexed: 02/08/2023]
Abstract
BACKGROUND Hepcidin, the systemic iron regulator, could be critical in differentiating iron deficiency (ID) from functional iron restriction in inflammatory bowel disease (IBD). We assessed hepcidin as a diagnostic ID marker and explored the relationship between hepcidin and its regulators in patients with IBD undergoing induction therapy with infliximab (IFX) or vedolizumab (VEDO). METHODS Patients with active IBD receiving induction therapy with IFX or VEDO were included. Serum samples at baseline and after 6 weeks of induction therapy were analyzed for hepcidin, inflammation- and hypoxia-associated cytokines, and oxidative stress. Data were analyzed by stratifying based on the response at week 14. Results were compared with samples from age- and sex-matched healthy control subjects. RESULTS Patients receiving induction therapy with IFX (n = 71) or VEDO (n = 51) and healthy control subjects (n = 50) were included. At baseline, hepcidin correlated positively with ferritin and negatively with soluble transferrin receptor/log ferritin index (P < .001). ID was prevalent in 96.7% of patients who had hepcidin levels below the median. Hepcidin accurately identified ID: the area under the curve (hepcidin) was 0.89 (95% confidence interval, 0.82-0.95; P < .001). In total, 75.4% of patients responded to induction therapy; inflammation, hepcidin, and ferritin decreased significantly, while transferrin increased during induction therapy. These changes were observed only in patients who responded to the therapy. CONCLUSIONS Hepcidin levels in IBD are primarily determined by ID, even in an inflammatory state. In addition, induction therapy can decrease hepcidin levels, which might lead to better bioavailability of iron supplements. Therefore, hepcidin is a potential diagnostic ID biomarker that could assist therapeutic decision making.
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Affiliation(s)
- Roberta Loveikyte
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden University, Leiden, the Netherlands.,Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Arno R Bourgonje
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Johannes J van der Reijden
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden University, Leiden, the Netherlands
| | - Marian L C Bulthuis
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Lukas J A C Hawinkels
- Department of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden University, Leiden, the Netherlands
| | - Marijn C Visschedijk
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Eleonora A M Festen
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Hendrik M van Dullemen
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Rinse K Weersma
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Harry van Goor
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | | | - Gerard Dijkstra
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
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Karaskova E, Pospisilova D, Velganova-Veghova M, Geryk M, Volejnikova J, Holub D, Hajduch M. Importance of Hepcidin in the Etiopathogenesis of Anemia in Inflammatory Bowel Disease. Dig Dis Sci 2021; 66:3263-3269. [PMID: 33063192 DOI: 10.1007/s10620-020-06652-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 10/01/2020] [Indexed: 12/09/2022]
Abstract
Anemia is the most common extraintestinal systemic complication of inflammatory bowel disease. Iron deficiency anemia and anemia of chronic disease are among the most frequent types. Intestinal iron absorption is controlled by the activity of ferroportin. Cells with high expression of ferroportin include enterocytes, and also macrophages and hepatocytes. Iron homeostasis is controlled by the hepcidin-ferroportin axis. Hepcidin is a central regulator of iron metabolism and can also serve as a marker of systemic inflammation. During systemic inflammatory response, the synthesis of hepcidin increases, and hepcidin binds to ferroportin and inhibits its activity. Thus, iron is not absorbed from the bowel into the circulation and also remains sequestered in macrophages. Conversely, hepcidin synthesis is suppressed during conditions requiring increased iron intake for enhanced erythropoiesis, such as iron deficiency anemia or hypoxia. Here, ferroportin is not blocked, and iron is actively absorbed into the bloodstream and also released from the stores. Production of hepcidin is influenced by the status of total body iron stores, systemic inflammatory activity and erythropoietic activity. Oral iron therapy is limited in inflammatory bowel diseases due to ongoing gastrointestinal inflammation. It is less effective and may worsen the underlying disease. Therefore, the choice between oral and parenteral iron therapy must be made with caution. Oral iron would be ineffective at high hepcidin levels due to concurrent ferroportin blockage. Contrarily, low levels of hepcidin indicate that oral iron therapy should be successful. An understanding of hepcidin can help in understanding the body's reaction to iron depletion during the inflammatory process.
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Affiliation(s)
- Eva Karaskova
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, I. P. Pavlova 185/6, Olomouc, 779 00, Czech Republic.
| | - Dagmar Pospisilova
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, I. P. Pavlova 185/6, Olomouc, 779 00, Czech Republic
| | - Maria Velganova-Veghova
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, I. P. Pavlova 185/6, Olomouc, 779 00, Czech Republic
| | - Milos Geryk
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, I. P. Pavlova 185/6, Olomouc, 779 00, Czech Republic
| | - Jana Volejnikova
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, I. P. Pavlova 185/6, Olomouc, 779 00, Czech Republic
| | - Dusan Holub
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Olomouc, Czech Republic
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Olomouc, Czech Republic
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Girelli D, Marchi G, Busti F, Vianello A. Iron metabolism in infections: Focus on COVID-19. Semin Hematol 2021; 58:182-187. [PMID: 34389110 PMCID: PMC8305218 DOI: 10.1053/j.seminhematol.2021.07.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 07/12/2021] [Indexed: 12/15/2022]
Abstract
Iron is a micronutrient essential for a wide range of metabolic processes in virtually all living organisms. During infections, a battle for iron takes place between the human host and the invading pathogens. The liver peptide hepcidin, which is phylogenetically and structurally linked to defensins (antimicrobial peptides of the innate immunity), plays a pivotal role by subtracting iron to pathogens through its sequestration into host cells, mainly macrophages. While this phenomenon is well studied in certain bacterial infections, much less is known regarding viral infections. Iron metabolism also has implications on the functionality of cells of the immune system. Once primed by the contact with antigen presenting cells, lymphocytes need iron to sustain the metabolic burst required for mounting an effective cellular and humoral response. The COVID-19 pandemic has boosted an amount of clinical and translational research over the possible influences of nutrients on SARS-CoV-2 infection, in terms of either susceptibility or clinical course. Here we review the intersections between iron metabolism and COVID-19, belonging to the wider domain of the so-called “nutritional immunity”. A better understanding of such connections has potential broad implications, either from a mechanistic standpoint, or for the development of more effective strategies for managing COVID-19 and possible future pandemics.
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Affiliation(s)
- Domenico Girelli
- Department of Medicine, Section of Internal Medicine, University of Verona, Euro Blood Net Referral Center, Azienda Ospedaliera Universitaria Integrata Verona, Italy.
| | - Giacomo Marchi
- Department of Medicine, Section of Internal Medicine, University of Verona, Euro Blood Net Referral Center, Azienda Ospedaliera Universitaria Integrata Verona, Italy
| | - Fabiana Busti
- Department of Medicine, Section of Internal Medicine, University of Verona, Euro Blood Net Referral Center, Azienda Ospedaliera Universitaria Integrata Verona, Italy
| | - Alice Vianello
- Department of Medicine, Section of Internal Medicine, University of Verona, Euro Blood Net Referral Center, Azienda Ospedaliera Universitaria Integrata Verona, Italy
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10
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Xu Y, Alfaro-Magallanes VM, Babitt JL. Physiological and pathophysiological mechanisms of hepcidin regulation: clinical implications for iron disorders. Br J Haematol 2021; 193:882-893. [PMID: 33316086 PMCID: PMC8164969 DOI: 10.1111/bjh.17252] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 11/04/2020] [Indexed: 02/06/2023]
Abstract
The discovery of hepcidin has provided a solid foundation for understanding the mechanisms of systemic iron homeostasis and the aetiologies of iron disorders. Hepcidin assures the balance of circulating and stored iron levels for multiple physiological processes including oxygen transport and erythropoiesis, while limiting the toxicity of excess iron. The liver is the major site where regulatory signals from iron, erythropoietic drive and inflammation are integrated to control hepcidin production. Pathologically, hepcidin dysregulation by genetic inactivation, ineffective erythropoiesis, or inflammation leads to diseases of iron deficiency or overload such as iron-refractory iron-deficiency anaemia, anaemia of inflammation, iron-loading anaemias and hereditary haemochromatosis. In the present review, we discuss recent insights into the molecular mechanisms governing hepcidin regulation, how these pathways are disrupted in iron disorders, and how this knowledge is being used to develop novel diagnostic and therapeutic strategies.
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Affiliation(s)
- Yang Xu
- Division of Nephrology, Program in Membrane Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Víctor M. Alfaro-Magallanes
- Division of Nephrology, Program in Membrane Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sport Sciences, Universidad Politécnica de Madrid (UPM), Madrid, Spain
| | - Jodie L. Babitt
- Division of Nephrology, Program in Membrane Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Zinc Protoporphyrin Is a Reliable Marker of Functional Iron Deficiency in Patients with Inflammatory Bowel Disease. Diagnostics (Basel) 2021; 11:diagnostics11020366. [PMID: 33670067 PMCID: PMC7926353 DOI: 10.3390/diagnostics11020366] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/07/2021] [Accepted: 02/18/2021] [Indexed: 12/21/2022] Open
Abstract
Iron deficiency (ID) is a common manifestation of inflammatory bowel disease (IBD), arising primarily due to chronic inflammation and/or blood loss. There is no gold standard for ID diagnosis, which is often complicated by concomitant inflammation. Zinc protoporphyrin (ZnPP) correlates with parameters of iron homeostasis and has been identified as a promising marker for ID, irrespective of inflammation. We investigated the diagnostic performance of ZnPP in ID, iron deficiency anemia, anemia of chronic disease and mixed anemia in a cross-sectional study in 130 patients with IBD. Different parameters were compared by receiver operator characteristic (ROC) analysis as detectors of iron-restricted erythropoiesis (IRE). IRE was detected in 91 patients (70.0%); fifty-nine (64.8%) had absolute ID and 23 (25.4%) functional ID. When inflammation was present, ZnPP was a more reliable sole biomarker of IRE than MCV, transferrin saturation (TSAT) or ferritin (AUC; 0.855 vs. 0.763, 0.834% and 0.772, respectively). The specificity of TSAT was significantly lower than ZnPP when inflammation was present (38% vs. 71%, respectively). We conclude that ZnPP is a reliable biomarker of functional ID in patients with IBD and more dependable than ferritin or TSAT, which are influenced by chronic inflammation. We propose that ZnPP may also have utility in patients with other chronic diseases.
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12
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Hepcidin Is a Reliable Marker of Iron Deficiency Anemia in Newly Diagnosed Patients with Inflammatory Bowel Disease. DISEASE MARKERS 2020; 2020:8523205. [PMID: 33354248 PMCID: PMC7737436 DOI: 10.1155/2020/8523205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 10/10/2020] [Accepted: 10/28/2020] [Indexed: 12/29/2022]
Abstract
Results There was a high statistically significant difference between IBD patients and controls in levels of hepcidin (P < 0.01). Namely, serum hepcidin levels were significantly higher in the control group. There was no statistically significant correlation of serum hepcidin with CRP, Mayo score, or CDAI, respectively (P > 0.05). However, we have found a statistically significant negative correlation of sTfR and TIBC with hepcidin (P < 0.01). Conclusion Results of our study suggest that hepcidin is a reliable marker of IDA in patients with IBD, and it could be used in routine clinical practice when determining adequate therapy in these patients.
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Kim SY, An S, Park DK, Kwon KA, Kim KO, Chung JW, Kim JH, Kim YJ. Efficacy of iron supplementation in patients with inflammatory bowel disease treated with anti-tumor necrosis factor-alpha agents. Therap Adv Gastroenterol 2020; 13:1756284820961302. [PMID: 33029199 PMCID: PMC7520924 DOI: 10.1177/1756284820961302] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 09/02/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Anemia is a common extraintestinal manifestation of inflammatory bowel disease (IBD). However, data on the influence of anti-tumor necrosis factor-alpha (anti-TNF-α) agents and iron supplementation on anemia in patients with IBD are sparse. We assessed the effect of iron supplementation in patients with IBD initially treated with an anti-TNF-α agent. METHODS Data from 79 IBD patients who started anti-TNF-α treatment at a tertiary hospital were analyzed. The patients were divided into the anti-TNF-α (n = 52) and anti-TNF-α with iron supplementation (n = 27) groups. Effects on laboratory parameters, the prevalence of anemia, and disease activity were evaluated at baseline (year 0) and 1 year later. RESULTS The hemoglobin (Hb) level significantly increased between years 0 and 1 in both groups [12.0 ± 1.8-13.3 ± 2.0 g/dL in the anti-TNF-α group (p < 0.001) and 9.8 ± 2.4-11.7 ± 2.3 g/dL in the anti-TNF-α and iron supplementation group (p = 0.004)]. In a subgroup analysis of severely anemic patients with IBD, iron supplementation increased the magnitude of the improvement in Hb level (8.5 ± 1.5-11.4 ± 2.1 g/dL; p = 0.001) compared with the anti-TNF-α group (9.3 ± 0.8-11.4 ± 2.7 g/dL; p = 0.081). Disease activity was significantly improved in both groups at year 1 compared with year 0. Persistent anemia was significantly correlated with severe anemia at baseline (p = 0.017). CONCLUSION In anemic patients with IBD, anti-TNF-α agents led to clinically meaningful improvements in anemia independent of iron supplementation. Also, iron supplementation could be helpful in severely anemic patients with IBD.
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Affiliation(s)
- Su Young Kim
- Department of Internal Medicine, Division of Gastroenterology, Yonsei University, Wonju Medical School, Wonju, Republic of Korea
| | - Sejin An
- Department of Medicine, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Dong Kyun Park
- Department of Internal Medicine, Division of Gastroenterology, Gachon University, Gil Medical Center, Incheon, Republic of Korea
| | - Kwang An Kwon
- Department of Internal Medicine, Division of Gastroenterology, Gachon University, Gil Medical Center, Incheon, Republic of Korea
| | - Kyoung Oh Kim
- Department of Internal Medicine, Division of Gastroenterology, Gachon University, Gil Medical Center, Incheon, Republic of Korea
| | - Jun-Won Chung
- Department of Internal Medicine, Division of Gastroenterology, Gachon University, Gil Medical Center, Incheon, Republic of Korea
| | - Jung Ho Kim
- Department of Internal Medicine, Division of Gastroenterology, Gachon University, Gil Medical Center, Incheon, Republic of Korea
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Gutschow P, Han H, Olbina G, Westerman K, Nemeth E, Ganz T, Copeland K, Westerman M, Ostland V. Clinical Immunoassay for Human Hepcidin Predicts Iron Deficiency in First-Time Blood Donors. J Appl Lab Med 2020; 5:943-953. [PMID: 32674118 PMCID: PMC7497288 DOI: 10.1093/jalm/jfaa038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 02/03/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Serum markers currently used as indicators of iron status have clinical limitations. Hepcidin, a key regulator of iron homeostasis, is reduced in iron deficiency (ID) and increased in iron overload. We describe the first CLIA-validated immunoassay with excellent accuracy and precision to quantify human serum hepcidin. Its diagnostic utility for detecting ID in first-time blood donors was demonstrated. METHODS A monoclonal competitive ELISA (C-ELISA) was developed for the quantitation of human hepcidin and validated according to CLIA guidelines. Sera from nonanemic first-time blood donors (n = 292) were analyzed for hepcidin, ferritin, transferrin, and serum iron. Logistic regression served to determine the utility of hepcidin as a predictor of ID. RESULTS The C-ELISA was specific for human hepcidin and had a low limit of quantitation (4.0 ng/mL). The hepcidin concentration measured with the monoclonal C-ELISA was strongly correlated with a previously established, extensively tested polyclonal C-ELISA (Blood 2008;112:4292-7) (r = 0.95, P < 0.001). The area under the receiver operating characteristic curve for hepcidin as a predictor of ID, defined by 3 ferritin concentration thresholds, was >0.9. For predicting ID defined by ferritin <15 ng/mL, hepcidin <10 ng/mL yielded sensitivity of 93.1% and specificity of 85.5%, whereas the same hepcidin cutoff for ferritin <30 ng/mL yielded sensitivity of 67.6% and specificity of 91.7%. CONCLUSION The clinical measurement of serum hepcidin concentrations was shown to be a potentially useful tool for diagnosing ID.
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Affiliation(s)
| | | | | | | | - Elizabeta Nemeth
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA
| | - Tomas Ganz
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA
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Lucendo AJ, Roncero Ó, Serrano-Duenas MT, Hervías D, Alcázar LM, Miriam-Ruiz-Ponce, Verdejo C, Laserna-Mendieta E, Lorente R, Arias Á. Effects of anti-TNF-alpha therapy on hemoglobin levels and anemia in patients with inflammatory bowel disease. Dig Liver Dis 2020; 52:400-407. [PMID: 31892506 DOI: 10.1016/j.dld.2019.11.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/16/2019] [Accepted: 11/22/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND Tumor necrosis factor-α (TNF-α) is involved in inducing inflammatory anemia. The potential effect of anti-TNF-α agents on anemia in inflammatory bowel diseases (IBD) is still unknown. METHODS Analytical data and disease characteristics from 362 IBD patients [271 CD/91UC) treated with anti-TNF-α drugs were retrospectively collected. Effects on disease activity, blood markers and prevalence of anemia were assessed after 6 and 12 months of therapy. RESULTS 29.3% patients presented anemia at baseline, and significantly reduced to 14.4% and 7.8% after 6 and 12 months of therapy, respectively. Mean ± SD Hb levels increased significantly at month 6, and this increase was sustained at 12 months. Serum markers of iron metabolism increased significantly compared to baseline, as disease activity measured by C-reactive protein (CRP) was reduced. All these effects were observed independently for CD and UC, and were independent of iron supplementation during treatment. Anemia at baseline (OR 4.09; 95%CI 1.98-8.45) and elevated CRP (OR 3.45; 95CI 1.29-9.22) were independently associated with risk of persistent anemia, as well as iron replacement during therapy (OR 4.36; 95%CI 2.07-9.16). CONCLUSIONS Controlling disease activity with anti-TNF- α therapy significantly and independently associated with resolution of anemia in IBD, with no relevant role for iron replacement therapy.
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Affiliation(s)
- Alfredo J Lucendo
- Department of Gastroenterology, Hospital General de Tomelloso, Tomelloso, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Spain; Instituto de Investigación Sanitaria La Princesa, Madrid, Spain.
| | - Óscar Roncero
- Department of Gastroenterology, Hospital General La Mancha Centro, Alcázar de San Juan, Spain
| | | | - Daniel Hervías
- Department of Gastroenterology, Hospital Virgen de Altagracia, Manzanares, Spain
| | - Luis Miguel Alcázar
- Department of Gastroenterology, Hospital Gutierrez Ortega, Valdepeñas, Spain
| | - Miriam-Ruiz-Ponce
- Department of Gastroenterology, Hospital General de Tomelloso, Tomelloso, Spain; Instituto de Investigación Sanitaria La Princesa, Madrid, Spain
| | - Cristina Verdejo
- Department of Gastroenterology/IBD Unit, Hospital General Universitario de Ciudad Real, Spain
| | - Emilio Laserna-Mendieta
- Department of Gastroenterology, Hospital General de Tomelloso, Tomelloso, Spain; Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; Clinical Laboratory, Hospital General de Villarrobledo, Villarrobledo, Spain
| | - Rufo Lorente
- Department of Gastroenterology/IBD Unit, Hospital General Universitario de Ciudad Real, Spain
| | - Ángel Arias
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Spain; Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; Research Support Unit, Hospital General La Mancha Centro, Alcázar de San Juan, Spain
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16
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Atopic Disease and Anemia in Korean Patients: Cross-Sectional Study with Propensity Score Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17061978. [PMID: 32197291 PMCID: PMC7142528 DOI: 10.3390/ijerph17061978] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 02/07/2023]
Abstract
Atopic disease is associated with chronic inflammation, and anemia has been reported in patients with inflammatory disorders such as rheumatoid arthritis, chronic obstructive pulmonary disease, and irritable bowel disease. The objective of this study was to determine whether atopic disease is associated with an increased risk of anemia. A cross-sectional study with propensity score weighting was conducted using a health insurance review agency claims dataset comprised of randomized patients who used the Korean national health system at least once in 2016. The association between atopic disease (asthma, atopic dermatitis, allergic rhinitis) and anemia (iron deficiency anemia (IDA) and/or anemia of inflammation (AI)) was examined. A total of 1,468,033 patients were included in this study. The IDA/AI prevalence was 3.1% (45,681 patients). After propensity score weighting, there were 46,958 and 45,681 patients in the non-anemic and anemic groups, respectively. The prevalence of IDA/AI in patients with atopic dermatitis, allergic rhinitis, or asthma had an odds ratio (OR) of 1.40 (95% confidence interval (CI), 1.33–1.48; p < 0.001), 1.17 (95% CI, 1.14–1.21; p < 0.001), and 1.32 (95% CI, 1.28–1.36; p < 0.001), respectively. In addition, the prevalence of IDA increased with higher numbers of atopic diseases. In conclusion, the prevalence of IDA/AI was higher in patients with atopic disease, even after adjusting for demographic characteristics and other risk factors. Further study is needed to distinguish between IDA and AI and to enhance understanding of the etiology of anemia in patients with inflammatory conditions.
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Aksan A, Wohlrath M, Iqbal TH, Dignass A, Stein J. Inflammation, but Not the Underlying Disease or Its Location, Predicts Oral Iron Absorption Capacity in Patients With Inflammatory Bowel Disease. J Crohns Colitis 2020; 14:316-322. [PMID: 31665264 DOI: 10.1093/ecco-jcc/jjz149] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Anaemia is common in patients with inflammatory bowel disease [IBD], its two main aetiologies being iron deficiency anaemia [IDA] and anaemia of chronic inflammation [ACI]. Impaired intestinal iron absorption due to inflammatory cytokines is thought to play a role in ACI. We undertook for the first time a controlled prospective study investigating effects of differing underlying diseases, disease locations, and types of iron deficiency or anaemia on oral iron absorption in adult IBD patients with and without inflammation. METHODS This study was a comparative, single-centred open clinical trial in adults with IBD [n = 73] and healthy controls [n = 22]. Baseline parameters included blood count, iron status [ferritin, transferrin, transferrin saturation, soluble transferrin receptor, hepcidin, serum iron], high-sensitivity C-reactive protein [hsCRP] and interleukin-6. Iron absorption was tested using one oral, enteric-coated capsule containing 567.7 mg iron[II]-glycine-sulphate complex. Serum iron was determined 60/90/120/180/240 min after ingestion. RESULTS Iron absorption capacity was shown to be influenced by inflammation and anaemia or iron deficiency [ID] type but not by underlying disease type or localisation. The ACI group showed a significantly lower iron absorption capacity than all others. Whereas hsCRP levels [-0.387, p < 0.001], IL-6 [-0.331, p = 0.006], ferritin [-0.531, p < 0.001], and serum hepcidin [-0.353, p = 0.003] correlated negatively with serum iron change at 2 h, transferrin showed a positive correlation at the same time point [0.379, p < 0.001]. CONCLUSIONS Underlying disease type and localisation appear to have little effect on iron absorption capacity, whereas lack of response to oral iron correlates well with serum markers of inflammation. Iron absorption capacity is thus significantly reduced in the presence of inflammation.
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Affiliation(s)
- Ayşegül Aksan
- Interdisciplinary Crohn-Colitis Centre Rhein-Main, Frankfurt am Main, Germany.,Institute of Pharmaceutical Chemistry, Goethe University Frankfurt am Main, Germany
| | - M Wohlrath
- Interdisciplinary Crohn-Colitis Centre Rhein-Main, Frankfurt am Main, Germany
| | - Tariq H Iqbal
- Institute for Cancer Studies, University of Birmingham Cancer Research, Birmingham, UK
| | - A Dignass
- Department of Gastroenterology, Apaglesion Markus Krankenhaus, Frankfurt am Main, Germany
| | - J Stein
- Interdisciplinary Crohn-Colitis Centre Rhein-Main, Frankfurt am Main, Germany.,Department of Gastroenterology and Clinical Nutrition, DGD Clinics Sachsenhausen, Frankfurt am Main, Germany
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Ginzburg YZ. New diagnostic tools for delineating iron status. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2019; 2019:327-336. [PMID: 31808893 PMCID: PMC6913443 DOI: 10.1182/hematology.2019000035] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Recent advances in our understanding of iron metabolism regulation and crosstalk with erythropoiesis have provided insight into the pathophysiology of multiple disease conditions. For instance, the peptide hormone hepcidin is central to the regulation of iron metabolism. Its effect on cellular iron concentration involves binding ferroportin, the main iron export protein, resulting in its internalization and degradation and leading to iron sequestration within ferroportin-expressing cells. Furthermore, hepcidin regulation by erythropoiesis is attributed in large part to a bone marrow-derived hormone erythroferrone. Erythroferrone-induced hepcidin suppression in diseases of expanded hematopoiesis results in iron overload. Conversely, diseases, such as iron refractory iron deficiency anemia and anemia of chronic inflammation, are characterized by aberrantly increased hepcidin, resulting in iron sequestration and decreased circulating iron and eventually leading to iron-restricted erythropoiesis. Lastly, because iron functions in concert with erythropoietin to promote erythroid precursor survival, proliferation, and differentiation, iron deficiency anemia is a consequence not only of decreased hemoglobin synthesis in each cell but also, a decrease in erythropoietin responsiveness in the bone marrow. How to translate this new information to the clinical setting has not been fully elucidated. The purpose of this manuscript is to summarize current standard tools for identifying iron deficiency in anemic patients; explore the tools and context for evaluating novel markers, such as hepcidin, erythroferrone, and markers of the iron restriction response; and assess available evidence for how their use could increase our understanding of health outcomes in clinically challenging cases.
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19
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Anti-TNF- α Monoclonal Antibody Therapy Improves Anemia through Downregulating Hepatocyte Hepcidin Expression in Inflammatory Bowel Disease. Mediators Inflamm 2019; 2019:4038619. [PMID: 31814801 PMCID: PMC6878771 DOI: 10.1155/2019/4038619] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 06/28/2019] [Accepted: 09/30/2019] [Indexed: 12/13/2022] Open
Abstract
Anemia is one of the most common complications in patients with inflammatory bowel disease (IBD). Hepcidin as a key regulator of iron metabolism is pivotal in mediating the occurrence of anemia of chronic disease. Herein, we analyzed the levels of hepcidin in sera from IBD patients by enzyme-linked immunosorbent assay and investigated its potential role in regulating the anemia in IBD. We observed that the levels of serum hepcidin were increased in active IBD patients compared with those in remitted IBD patients and healthy controls and that serum hepcidin was associated with disease activity, CRP, and ESR, respectively. Importantly, we found that the increased levels of serum hepcidin were positively correlated with the severity of anemia and the imbalance of iron metabolism in anemic UC and CD patients. Proinflammatory factors (e.g., IL-6, IL-17, and TNF-α) were positively correlated with the concentrations of serum hepcidin in IBD patients. Interestingly, hepcidin was found to be decreased in patients with Crohn's disease after successful therapy with anti-TNF-α mAb (i.e., infliximab), indicating the underlying association between TNF-α and hepcidin expression. To investigate the specific mechanisms involved, we cultured LO2 and HepG2 cell lines in vitro under stimulation with TNF-α and observed that the levels of hepcidin mRNA were markedly upregulated in caspase-3/8- and NF-κB-dependent manners. Therefore, our data suggest that TNF-α stimulates the expression of hepcidin in IBD patients, resulting in aggravated anemia and that blockage of TNF-α or the caspase-3/8 and NF-κB pathways could downregulate hepcidin expression. This study provides inspiration for the therapy and management of anemia in IBD.
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Abbati G, Incerti F, Boarini C, Pileri F, Bocchi D, Ventura P, Buzzetti E, Pietrangelo A. Safety and efficacy of sucrosomial iron in inflammatory bowel disease patients with iron deficiency anemia. Intern Emerg Med 2019; 14:423-431. [PMID: 30499070 DOI: 10.1007/s11739-018-1993-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 11/20/2018] [Indexed: 12/11/2022]
Abstract
Iron deficiency anemia (IDA) is one of the most common complications of inflammatory bowel disease (IBD). We planned a prospective study to address tolerability and efficacy of sucrosomial iron, a new oral formulation of ferric pyrophosphate, in IBD patients. Thirty patients with a confirmed diagnosis of Crohn's Disease (CD) or ulcerative colitis (UC) and mild IDA were enrolled. Patients with severe IBD were excluded. All patients underwent 12 weeks of oral treatment with 30 mg/day of sucrosomial iron. Treatment compliance and adverse events were investigated every 4 weeks. Iron status, hematological parameters and IBD activity scores were determined at baseline and at the end of treatment, as well as serum hepcidin and non-transferrin bound iron (NTBI) levels. Twenty-four (80%) patients took more than 90% of the prescribed regimen. Forty-four adverse events (AEs) were recorded, but none of them is considered certainly or probably related to the study treatment. Interestingly, only eleven gastrointestinal events were recorded in 9 (30%) patients. At the end of treatment, all iron parameters improved significantly and Hb increased in 86% of patients (from 11.67 to 12.37 g/dl, p = 0.001). Serum hepcidin showed a significant increase in 79% of patients and became positively correlated with C-reactive protein (CRP) at the end of the study, while NTBI remained below the detection threshold after iron supplementation. The IBD activity scores improved in both CD and UC. This pilot interventional study supports the therapeutic use of sucrosomial iron in IBD and paves the way for future studies in larger or more difficult IBD populations.
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Affiliation(s)
- Gianluca Abbati
- Division of Internal Medicine 2 and Center for Hemochromatosis, University of Modena and Reggio Emilia, Via DEL Pozzo 71, 41124, Modena, Italy.
| | - Federica Incerti
- Division of Internal Medicine 2 and Center for Hemochromatosis, University of Modena and Reggio Emilia, Via DEL Pozzo 71, 41124, Modena, Italy
| | - Chiara Boarini
- Division of Internal Medicine 2 and Center for Hemochromatosis, University of Modena and Reggio Emilia, Via DEL Pozzo 71, 41124, Modena, Italy
| | - Francesca Pileri
- Division of Internal Medicine 2 and Center for Hemochromatosis, University of Modena and Reggio Emilia, Via DEL Pozzo 71, 41124, Modena, Italy
| | - Davide Bocchi
- Division of Internal Medicine 2 and Center for Hemochromatosis, University of Modena and Reggio Emilia, Via DEL Pozzo 71, 41124, Modena, Italy
| | - Paolo Ventura
- Division of Internal Medicine 2 and Center for Hemochromatosis, University of Modena and Reggio Emilia, Via DEL Pozzo 71, 41124, Modena, Italy
| | - Elena Buzzetti
- Division of Internal Medicine 2 and Center for Hemochromatosis, University of Modena and Reggio Emilia, Via DEL Pozzo 71, 41124, Modena, Italy
| | - Antonello Pietrangelo
- Division of Internal Medicine 2 and Center for Hemochromatosis, University of Modena and Reggio Emilia, Via DEL Pozzo 71, 41124, Modena, Italy
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Petzer V, Theurl I, Weiss G. Established and Emerging Concepts to Treat Imbalances of Iron Homeostasis in Inflammatory Diseases. Pharmaceuticals (Basel) 2018; 11:E135. [PMID: 30544952 PMCID: PMC6315795 DOI: 10.3390/ph11040135] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 12/05/2018] [Accepted: 12/06/2018] [Indexed: 02/06/2023] Open
Abstract
Inflammation, being a hallmark of many chronic diseases, including cancer, inflammatory bowel disease, rheumatoid arthritis, and chronic kidney disease, negatively affects iron homeostasis, leading to iron retention in macrophages of the mononuclear phagocyte system. Functional iron deficiency is the consequence, leading to anemia of inflammation (AI). Iron deficiency, regardless of anemia, has a detrimental impact on quality of life so that treatment is warranted. Therapeutic strategies include (1) resolution of the underlying disease, (2) iron supplementation, and (3) iron redistribution strategies. Deeper insights into the pathophysiology of AI has led to the development of new therapeutics targeting inflammatory cytokines and the introduction of new iron formulations. Moreover, the discovery that the hormone, hepcidin, plays a key regulatory role in AI has stimulated the development of several therapeutic approaches targeting the function of this peptide. Hence, inflammation-driven hepcidin elevation causes iron retention in cells and tissues. Besides pathophysiological concepts and diagnostic approaches for AI, this review discusses current guidelines for iron replacement therapies with special emphasis on benefits, limitations, and unresolved questions concerning oral versus parenteral iron supplementation in chronic inflammatory diseases. Furthermore, the review explores how therapies aiming at curing the disease underlying AI can also affect anemia and discusses emerging hepcidin antagonizing drugs, which are currently under preclinical or clinical investigation.
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Affiliation(s)
- Verena Petzer
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria.
| | - Igor Theurl
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria.
| | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, 6020 Innsbruck, Austria.
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, 6020 Innsbruck, Austria.
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Affiliation(s)
- Chaim Hershko
- Professor Emeritus, Department of Hematology, Shaare Zedek Medical Center, Jerusalem, Israel
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Karaskova E, Volejnikova J, Holub D, Velganova-Veghova M, Sulovska L, Mihal V, Horvathova M, Pospisilova D. Hepcidin in newly diagnosed inflammatory bowel disease in children. J Paediatr Child Health 2018; 54:1362-1367. [PMID: 29923651 DOI: 10.1111/jpc.14093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 05/03/2018] [Accepted: 05/11/2018] [Indexed: 12/11/2022]
Abstract
AIM Hepcidin is a central regulator of iron homeostasis. Its production is also influenced by systemic inflammation. The aims of this study were to compare hepcidin levels in paediatric patients newly diagnosed with Crohn's disease (CD) and ulcerative colitis (UC) and to determine the association of hepcidin levels with laboratory and clinical parameters of inflammatory bowel disease (IBD) activity. METHODS Children with newly diagnosed IBD between January 2012 and September 2016 were enrolled in this comparative cross-sectional study. We analysed levels of serum hepcidin, C-reactive protein, iron, ferritin, soluble transferrin receptors, blood count and faecal calprotectin in all subjects. Serum hepcidin levels were measured by reverse-phase liquid chromatography. The Paediatric Crohn's Disease Activity Index was used to evaluate CD in children, and Paediatric Ulcerative Colitis Activity Index was used for the assessment of UC disease activity. RESULTS Subjects with CD (n = 53) had significantly higher serum hepcidin levels compared with subjects with UC (n = 23) - 22.6 ng/mL (range 8.5-65.0) versus 6.5 ng/mL (range 2.4-25.8) (P < 0.05). Hepcidin was independently associated with ferritin levels in all IBD patients (P < 0.05). Moreover, there was a significant positive correlation between hepcidin and platelet count (P < 0.05) in children with CD and a negative correlation between hepcidin and faecal calprotectin (P < 0.05) in children with UC. CONCLUSION Different hepcidin levels between children with newly diagnosed CD and UC suggest the distinct contribution of iron deficiency and/or systemic inflammation to anaemia and may help clinicians choose the best anti-anaemic treatment.
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Affiliation(s)
- Eva Karaskova
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czech Republic
| | - Jana Volejnikova
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czech Republic
| | - Dusan Holub
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czech Republic
| | - Maria Velganova-Veghova
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czech Republic
| | - Lucie Sulovska
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czech Republic
| | - Vladimír Mihal
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czech Republic
| | - Monika Horvathova
- Department of Biology, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czech Republic
| | - Dagmar Pospisilova
- Department of Pediatrics, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czech Republic
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Busti F, Marchi G, Ugolini S, Castagna A, Girelli D. Anemia and Iron Deficiency in Cancer Patients: Role of Iron Replacement Therapy. Pharmaceuticals (Basel) 2018; 11:E94. [PMID: 30274354 PMCID: PMC6315653 DOI: 10.3390/ph11040094] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/27/2018] [Accepted: 09/28/2018] [Indexed: 12/21/2022] Open
Abstract
Anemia in cancer patients is quite common, with remarkable negative impacts on quality of life and overall prognosis. The pathogenesis is complex and typically multifactorial, with iron deficiency (ID) often being a major and potentially treatable contributor. In turn, ID in cancer patients can be due to multiple concurring mechanisms, including bleeding (e.g., in gastrointestinal cancers or after surgery), malnutrition, medications, and hepcidin-driven iron sequestration into macrophages with subsequent iron-restricted erythropoiesis. Indeed, either absolute or functional iron deficiency (AID or FID) can occur. While for absolute ID there is a general consensus regarding the laboratory definition (that is ferritin levels <100 ng/mL ± transferrin saturation (TSAT) <20%), a shared definition of functional ID is still lacking. Current therapeutic options in cancer anemia include iron replacement, erythropoietic stimulating agents (ESAs), and blood transfusions. The latter should be kept to a minimum, because of concerns regarding risks, costs, and limited resources. Iron therapy has proved to be a valid approach to enhance efficacy of ESAs and to reduce transfusion need. Available guidelines focus mainly on patients with chemotherapy-associated anemia, and generally suggest intravenous (IV) iron when AID or FID is present. However, in the case of FID, the upper limit of ferritin in association with TSAT <20% at which iron should be prescribed is a matter of controversy, ranging up to 800 ng/mL. An increasingly recognized indication to IV iron in cancer patients is represented by preoperative anemia in elective oncologic surgery. In this setting, the primary goal of treatment is to decrease the need of blood transfusions in the perioperative period, rather than improving anemia-related symptoms as in chemotherapy-associated anemia. Protocols are mainly based on experiences of Patient Blood Management (PBM) in non-oncologic surgery, but no specific guidelines are available for oncologic surgery. Here we discuss some possible approaches to the management of ID in cancer patients in different clinical settings, based on current guidelines and recommendations, emphasizing the need for further research in the field.
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Affiliation(s)
- Fabiana Busti
- Department of Medicine, Section of Internal Medicine, University of Verona, and EuroBloodNet Referral Center for Iron Disorders, Azienda Ospedaliera Universitaria Integrata Verona, Policlinico G.B. Rossi, 37134 Verona, Italy.
| | - Giacomo Marchi
- Department of Medicine, Section of Internal Medicine, University of Verona, and EuroBloodNet Referral Center for Iron Disorders, Azienda Ospedaliera Universitaria Integrata Verona, Policlinico G.B. Rossi, 37134 Verona, Italy.
| | - Sara Ugolini
- Department of Medicine, Section of Internal Medicine, University of Verona, and EuroBloodNet Referral Center for Iron Disorders, Azienda Ospedaliera Universitaria Integrata Verona, Policlinico G.B. Rossi, 37134 Verona, Italy.
| | - Annalisa Castagna
- Department of Medicine, Section of Internal Medicine, University of Verona, and EuroBloodNet Referral Center for Iron Disorders, Azienda Ospedaliera Universitaria Integrata Verona, Policlinico G.B. Rossi, 37134 Verona, Italy.
| | - Domenico Girelli
- Department of Medicine, Section of Internal Medicine, University of Verona, and EuroBloodNet Referral Center for Iron Disorders, Azienda Ospedaliera Universitaria Integrata Verona, Policlinico G.B. Rossi, 37134 Verona, Italy.
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Baseline hepcidin measurement in the differential diagnosis of anaemia for elderly patients and its correlation with the increment of transferrin saturation following an oral iron absorption test. ACTA ACUST UNITED AC 2018; 57:250-258. [DOI: 10.1515/cclm-2018-0551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/29/2018] [Indexed: 01/04/2023]
Abstract
Abstract
Background
Anaemia is often multifactorial in the elderly, with a frequent association between iron deficiency anaemia (IDA) and anaemia of chronic disease (ACD). The primary objective of our study was to investigate whether baseline hepcidin measurement could be useful for identifying iron deficiency (ID) in anaemic elderly patients. The secondary objective was to assess whether baseline hepcidin concentrations correlated with the relative increase of transferrin saturation (TS) after an oral iron absorption test (OIAT).
Methods
Blood samples were collected between 7:30 am and 10:00 am in 328 geriatric outpatients, 102 underwent the OIAT. Types of anaemia were classified according biochemical and clinical criteria. TS and hepcidin were measured at baseline and 4 h after the iron dose. The ability of baseline hepcidin measurement to highlight ID in elderly anaemic patients was assessed using a receiver operator curve (ROC) analysis. Correlations between baseline hepcidin levels and the increment of TS following the OIAT were investigated using the Spearman coefficient.
Results
Among 328 included patients, 78 (23.8%) suffered from anaemia; 13 (4.0%), 19 (5.8%), 27 (8.2%) and 19 (5.8%) patients fulfilled criteria for IDA, IDA/ACD, ACD and unexplained anaemia, respectively. By multivariable analysis, creatinine, C-reactive protein, ferritin, Delta TS and Delta hepcidin were independently associated with baseline hepcidin concentrations. The area under the ROC curve (95% confidence interval) was 0.900 (0.830–0.970) for baseline hepcidin measurement. Baseline hepcidin levels correlated negatively with the relative increase in TS with a Spearman coefficient of −0.742.
Conclusions
Baseline hepcidin levels could be a useful tool to identify ID in anaemic elderly patients and may predict acute iron response following OIAT.
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Bergamaschi G, Di Sabatino A, Corazza GR. Pathogenesis, diagnosis and treatment of anaemia in immune-mediated gastrointestinal disorders. Br J Haematol 2018; 182:319-329. [PMID: 29732532 DOI: 10.1111/bjh.15254] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Immune-mediated disorders affecting the gastrointestinal (GI) tract may compromise GI integrity, interfere with the absorption of nutrients and cause bleeding and inflammation. All these features contribute to the pathogenesis of anaemia, the most prevalent extra-intestinal manifestation of immune-mediated GI disorders. Anaemia is most commonly due to iron deficiency and/or inflammation, but vitamin deficiencies and, more infrequently, autoimmune haemolysis or drug-induced myelosuppression can be involved. Here we address several issues related to the differential diagnosis and treatment of anaemia in immune-mediated GI disorders, giving particular relevance to the problem of iron deficiency anaemia associated with inflammation. It is emphasized how, in most cases, anaemias due to iron or vitamin deficiencies are best treated by parenteral administration of the deficient factor(s), and how the available high dose intravenous (IV) iron formulations can reduce ambulatory and social costs of IV iron supplementation, while improving patient's compliance to treatment. Actual and future treatment possibilities for anaemia of inflammation, involving the use of erythropoiesis stimulating agents, biologicals and hepcidin inhibitors are discussed.
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Affiliation(s)
| | - Antonio Di Sabatino
- Fondazione I.R.C.C.S. Policlinico San Matteo, Pavia, Italy.,University of Pavia, Pavia, Italy
| | - Gino R Corazza
- Fondazione I.R.C.C.S. Policlinico San Matteo, Pavia, Italy.,University of Pavia, Pavia, Italy
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Ferreira MDF, Aylor AEA, Mellanby RJ, Campbell SM, Gow AG. Investigation of manganese homeostasis in dogs with anaemia and chronic enteropathy. Open Vet J 2018; 7:360-366. [PMID: 29296596 PMCID: PMC5738890 DOI: 10.4314/ovj.v7i4.12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 11/21/2017] [Indexed: 11/17/2022] Open
Abstract
Lethargy is a frequent and important clinical feature of anaemia; however, it does not absolutely correlate with the severity of anaemia. Manganese is efficiently absorbed through the gastrointestinal tract via divalent metal transporter 1 (DMT1), which is also responsible for iron transport. DMT1 is upregulated in iron deficiency (ID). Increased manganese concentrations are reported in ID anaemia (IDA) in various species. Manganese is neurotoxic and therefore may contribute to lethargy observed in some anaemic patients. In addition, anaemia and ID are common in human inflammatory bowel disease. Little is known about how anaemia influences manganese metabolism in veterinary patients and how common is anaemia in dogs with chronic enteropathy (CE). If elevated manganese concentrations are found, then potentially neurotoxicity may be contributing to morbidity in these cases. The objectives of this study were to investigate the hypothesis that whole blood manganese concentrations would be increased in dogs with anaemia, particularly in dogs with confirmed IDA, and that anaemia would be common in canine CE. Medical records from 2012-2016 were reviewed for dogs with CE that were anaemic, as well as dogs with confirmed IDA, where a sample suitable for manganese analysis was held in an archive. Manganese concentration was measured in whole blood from: 11 anaemic dogs with CE, 6 dogs with IDA, 9 non-anaemic ill controls, and 12 healthy controls. Mann-Whitney U and Kruskal-Wallis tests with post-test Dunn's multiple comparisons tests were performed, with P<0.05 considered significant. The prevalence of anaemia in canine CE was 20.6% (33/160). Manganese concentrations were significantly different between all groups (P=0.0001) and higher in non-anaemic than anaemic dogs (P=0.0078). Manganese concentrations were also higher in healthy compared to ill controls (P<0.0001), anaemic dogs with CE (P=0.0056) and to dogs with IDA (P=0.0001). No differences were observed between anaemic dogs with CE, IDA and ill controls. Although anaemia was frequently observed in canine CE, the hypothesis that dogs with anaemia would have increased manganese concentrations, possibly contributing to a lethargic state was not supported. Further research is warranted to understand the influence of anaemia on whole blood manganese.
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Affiliation(s)
- Marisa da Fonseca Ferreira
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, The University of Edinburgh, UK
| | | | - Richard John Mellanby
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, The University of Edinburgh, UK
| | - Susan Mary Campbell
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, The University of Edinburgh, UK
| | - Adam George Gow
- Hospital for Small Animals, The Royal (Dick) School of Veterinary Studies, The University of Edinburgh, UK
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Changes in Hepcidin and Hemoglobin After Anti-TNF-alpha Therapy in Children and Adolescents With Crohn Disease. J Pediatr Gastroenterol Nutr 2018; 66:90-94. [PMID: 28604512 PMCID: PMC5723254 DOI: 10.1097/mpg.0000000000001650] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Anemia is the most common systemic complication of inflammatory bowel disease, is more common in affected children than in adults, and is mediated in large part by chronic inflammation. Inflammation increases levels of the iron-regulatory protein hepcidin, which have been elevated in adults with Crohn disease. METHODS We measured serum hepcidin-25 and hemoglobin (Hgb) in 40 children and adolescents with Crohn disease at baseline and 10 weeks after initiation of anti-tumor necrosis factor (TNF)-α therapy. Measures of disease activity, inflammatory markers, and cytokines were obtained in all subjects. Anemia was defined by World Health Organization criteria. RESULTS At baseline hepcidin and C-reactive protein levels were correlated, and 95% of subjects were anemic. After anti-TNF-α therapy, median (interquartile range) hepcidin concentrations decreased significantly and the distribution narrowed (27.9 [16.2, 52.9] vs 23.2 [11.1, 37.7] ng/mL, P = 0.01). Mean (standard deviation) Hgb also increased significantly (10.6 ± 1.2 to 10.9 ± 1.1 g/dL, P = 0.02), and the increase was sustained at 12 months, although 90% of participants continued to meet anemia criteria at 10 weeks. Disease activity and markers of inflammation also decreased and albumin levels increased. In generalized estimating equation analyses, higher TNF-α, interleukin 6, erythrocyte sedimentation rate, and C-reactive protein were associated with higher hepcidin concentrations (P = 0.04, P = 0.03, P = 0.003, and P < 0.001, respectively), and increased levels of disease activity were associated with higher hepcidin. CONCLUSIONS In children with Crohn disease, anti-TNF-α therapy is associated with decreased levels of hepcidin and increased Hgb 10 weeks after induction. Improvement in anemia may be a secondary benefit for children who receive this therapy.
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Girelli D, Ugolini S, Busti F, Marchi G, Castagna A. Modern iron replacement therapy: clinical and pathophysiological insights. Int J Hematol 2017; 107:16-30. [PMID: 29196967 DOI: 10.1007/s12185-017-2373-3] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 11/24/2017] [Indexed: 12/13/2022]
Abstract
Iron deficiency, with or without anemia, is extremely frequent worldwide, representing a major public health problem. Iron replacement therapy dates back to the seventeenth century, and has progressed relatively slowly until recently. Both oral and intravenous traditional iron formulations are known to be far from ideal, mainly because of tolerability and safety issues, respectively. At the beginning of this century, the discovery of hepcidin/ferroportin axis has represented a turning point in the knowledge of the pathophysiology of iron metabolism disorders, ushering a new era. In the meantime, advances in the pharmaceutical technologies are producing newer iron formulations aimed at minimizing the problems inherent with traditional approaches. The pharmacokinetic of oral and parenteral iron is substantially different, and diversities have become even clearer in light of the hepcidin master role in regulating systemic iron homeostasis. Here we review how iron therapy is changing because of such important advances in both pathophysiology and pharmacology.
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Affiliation(s)
- Domenico Girelli
- Department of Medicine, Section of Internal Medicine, Veneto Region Referral Center for Iron Metabolism Disorders, Center of Excellence for Rare Hematological Diseases "EuroBloodNet", University of Verona, Policlinico G.B. Rossi, 37134, Verona, Italy.
| | - Sara Ugolini
- Department of Medicine, Section of Internal Medicine, Veneto Region Referral Center for Iron Metabolism Disorders, Center of Excellence for Rare Hematological Diseases "EuroBloodNet", University of Verona, Policlinico G.B. Rossi, 37134, Verona, Italy
| | - Fabiana Busti
- Department of Medicine, Section of Internal Medicine, Veneto Region Referral Center for Iron Metabolism Disorders, Center of Excellence for Rare Hematological Diseases "EuroBloodNet", University of Verona, Policlinico G.B. Rossi, 37134, Verona, Italy
| | - Giacomo Marchi
- Department of Medicine, Section of Internal Medicine, Veneto Region Referral Center for Iron Metabolism Disorders, Center of Excellence for Rare Hematological Diseases "EuroBloodNet", University of Verona, Policlinico G.B. Rossi, 37134, Verona, Italy
| | - Annalisa Castagna
- Department of Medicine, Section of Internal Medicine, Veneto Region Referral Center for Iron Metabolism Disorders, Center of Excellence for Rare Hematological Diseases "EuroBloodNet", University of Verona, Policlinico G.B. Rossi, 37134, Verona, Italy
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Abstract
Anemia is a frequent complication of many inflammatory disorders, including inflammatory bowel disease. Although the pathogenesis of this problem is multifactorial, a key component is the abnormal elevation of the hormone hepcidin, the central regulator of systemic iron homeostasis. Investigations over the last decade have resulted in important insights into the role of hepcidin in iron metabolism and the mechanisms that lead to hepcidin dysregulation in the context of inflammation. These insights provide the foundation for novel strategies to prevent and treat the anemia associated with inflammatory diseases.
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Affiliation(s)
- Smriti Verma
- Mucosal Immunology and Biology Research Center, Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Building 114, 16th Street, Charlestown, Boston, MA 02129, USA.
| | - Bobby J Cherayil
- Mucosal Immunology and Biology Research Center, Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Building 114, 16th Street, Charlestown, Boston, MA 02129, USA.
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Iron replacement therapy: entering the new era without misconceptions, but more research is needed. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2017; 15:379-381. [PMID: 28880841 DOI: 10.2450/2017.0152-17] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Rampton DS, Goodhand JR, Joshi NM, Karim AB, Koodun Y, Barakat FM, Macken L, Ward DG, Iqbal TH, Epstein J, Fell JM, Sanderson IR. Oral Iron Treatment Response and Predictors in Anaemic Adolescents and Adults with IBD: A Prospective Controlled Open-Label Trial. J Crohns Colitis 2017; 11:706-715. [PMID: 27932449 PMCID: PMC5881709 DOI: 10.1093/ecco-jcc/jjw208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 11/14/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Because of previous concerns about the efficacy and safety of oral iron for treating iron deficiency anaemia in inflammatory bowel disease [IBD], particularly in young people, we compared the effects of ferrous sulphate on haemoglobin response, disease activity and psychometric scores in adolescents and adults with IBD. We also assessed the relation of baseline serum hepcidin to haemoglobin response. METHODS We undertook a prospective, open-label, 6-week non-inferiority trial of the effects of ferrous sulphate 200 mg twice daily on haemoglobin, iron status, hepcidin, disease activity (Harvey-Bradshaw Index, Simple Colitis Clinical Activity Index, C-reactive protein [CRP]), faecal calprotectin and psychometric scores in 45 adolescents [age 13-18 years] and 43 adults [>18 years]. RESULTS On intention-to-treat analysis, ferrous sulphate produced similar rises in haemoglobin in adolescents {before treatment 10.3 g/dl [0.18] (mean [SEM]), after 11.7 [0.23]: p < 0.0001} and adults (10.9 g/dl [0.14], 11.9 [0.19]: p < 0.0001); transferrin saturation, ferritin [in adolescents] and hepcidin [in adults] also increased significantly. On per-protocol univariate analysis, the haemoglobin response was inversely related to baseline haemoglobin, CRP and hepcidin. Oral iron did not alter disease activity; it improved Short IBDQ and Perceived Stress Questionnaire scores in adults. CONCLUSION Oral ferrous sulphate was no less effective or well-tolerated in adolescents than adults, and did not increase disease activity in this short-term study. The inverse relation between baseline CRP and hepcidin levels and the haemoglobin response suggests that CRP or hepcidin measurements could influence decisions on whether iron should be given orally or intravenously. [ClinTrials.gov registration number NCT01991314].
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Affiliation(s)
- David S. Rampton
- Centre for Immunobiology, Institute of Cell and Molecular Science, Barts and the London School of Medicine and Dentistry, London,UK
| | - James R. Goodhand
- Centre for Immunobiology, Institute of Cell and Molecular Science, Barts and the London School of Medicine and Dentistry, London,UK
| | - Neerav M. Joshi
- Centre for Immunobiology, Institute of Cell and Molecular Science, Barts and the London School of Medicine and Dentistry, London,UK
| | - Abu-Bakarr Karim
- Centre for Immunobiology, Institute of Cell and Molecular Science, Barts and the London School of Medicine and Dentistry, London,UK
| | - Yasmine Koodun
- Centre for Immunobiology, Institute of Cell and Molecular Science, Barts and the London School of Medicine and Dentistry, London,UK
| | - Farah M. Barakat
- Centre for Immunobiology, Institute of Cell and Molecular Science, Barts and the London School of Medicine and Dentistry, London,UK
| | - Lucia Macken
- Centre for Immunobiology, Institute of Cell and Molecular Science, Barts and the London School of Medicine and Dentistry, London,UK
| | - Douglas G. Ward
- Department of Gastroenterology, University Hospital Birmingham, Birmingham, UK
| | - Tariq H. Iqbal
- Department of Gastroenterology, University Hospital Birmingham, Birmingham, UK
| | - Jenny Epstein
- Department of Paediatric Gastroenterology, Chelsea and Westminster Hospital, London, UK
| | - John M. Fell
- Department of Paediatric Gastroenterology, Chelsea and Westminster Hospital, London, UK
| | - Ian R. Sanderson
- Centre for Immunobiology, Institute of Cell and Molecular Science, Barts and the London School of Medicine and Dentistry, London,UK
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Anti-TNF-Mediated Modulation of Prohepcidin Improves Iron Availability in Inflammatory Bowel Disease, in an IL-6-Mediated Fashion. Can J Gastroenterol Hepatol 2017; 2017:6843976. [PMID: 28191453 PMCID: PMC5278212 DOI: 10.1155/2017/6843976] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 10/15/2016] [Accepted: 12/20/2016] [Indexed: 12/15/2022] Open
Abstract
Background. Anaemia is common in inflammatory bowel disease (IBD), frequently resulting from a combination of iron deficiency and of anaemia of chronic disease (ACD). ACD is characterized by macrophage iron retention induced by proinflammatory cytokines. Hepcidin is the master inducer of iron accumulation during ACD, and its production is mainly regulated by IL-6 and the novel erythroid hormone erythroferrone (ERFE). This study evaluates whether anti-TNF monoclonal antibodies therapy modurates hepcidin production and the levels of its main regulators, leading to a restoration of iron homeostasis. Methods. Sera were collected from 21 IBD patients, before each anti-TNF administration, for the first 6 weeks of therapy. Prohepcidin, erythropoietin, erythroferrone, C reactive protein, interleukin-6, iron markers, and haemoglobin levels were measured and clinical activity indexes were evaluated. Results. Serum prohepcidin, IL-6, CRP, and ferritin were significantly reduced after 6-week treatment; an increase in serum iron and total transferrin was observed. No changes in the EPO-ERFE axis were found. Remarkably, haemoglobin was significantly increased. Conclusions. Anti-TNF therapy improves iron metabolism and, subsequently, anaemia in IBD. This effect appears to be related to the modulation of the cytokine network and specifically IL-6 leading to a relevant decrease of hepcidin, a master regulator of ACD.
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Bergamaschi G, Di Sabatino A, Pasini A, Ubezio C, Costanzo F, Grataroli D, Masotti M, Alvisi C, Corazza GR. Intestinal expression of genes implicated in iron absorption and their regulation by hepcidin. Clin Nutr 2016; 36:1427-1433. [PMID: 27729173 DOI: 10.1016/j.clnu.2016.09.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 06/16/2016] [Accepted: 09/23/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Through inhibition of iron absorption and iron mobilization from tissue stores, hepcidin exerts a negative control on iron homeostasis. Hepcidin, in fact, promotes the degradation of ferroportin (Fpn1), the iron exporter molecule expressed on the membrane of hepatocytes and macrophages, thus preventing iron release from cells to plasma. Hepcidin effects on enterocytes, however, are less clear. Aim of the present study was to further investigate the regulation of iron absorption by hepcidin. METHODS The transcriptional response of human duodenal mucosa to hepcidin was investigated using organ cultures of duodenal biopsies perendoscopically collected from healthy controls. Biopsies were cultured for 4 h with or without hepcidin-25 and were then assayed for the expression of iron-related genes. RESULTS In samples that had not been exposed to hepcidin, correlations were found between the expression of genes involved in iron absorption: DMT1, Fpn1, Dcytb and HCP1. In ex vivo experiments hepcidin down-regulated mRNA levels of the iron transporters Fpn1, and DMT1, of the ferric reductase Dcytb, of the ferroxidase hephaestin, and of the putative heme carrier protein HCP1. CONCLUSIONS Through the reported transcriptional changes hepcidin can modulate several steps of the iron absorption process, including the reduction of dietary iron by Dcytb, its uptake by enterocytes through DMT1, the mucosal uptake of heme iron by HCP1, and enterocyte iron release to plasma by Fpn1 in conjunction with hephaestin.
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Affiliation(s)
- Gaetano Bergamaschi
- Department of Internal Medicine, University of Pavia Medical School, and Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
| | - Antonio Di Sabatino
- Department of Internal Medicine, University of Pavia Medical School, and Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
| | - Alessandra Pasini
- Department of Internal Medicine, University of Pavia Medical School, and Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
| | - Cristina Ubezio
- Department of Internal Medicine, University of Pavia Medical School, and Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
| | - Filippo Costanzo
- Department of Internal Medicine, University of Pavia Medical School, and Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
| | - Davide Grataroli
- Department of Internal Medicine, University of Pavia Medical School, and Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
| | - Michela Masotti
- Department of Internal Medicine, University of Pavia Medical School, and Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
| | - Costanza Alvisi
- Department of Internal Medicine, University of Pavia Medical School, and Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
| | - Gino R Corazza
- Department of Internal Medicine, University of Pavia Medical School, and Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
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35
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Iron deficiency or anemia of inflammation? : Differential diagnosis and mechanisms of anemia of inflammation. Wien Med Wochenschr 2016; 166:411-423. [PMID: 27557596 PMCID: PMC5065583 DOI: 10.1007/s10354-016-0505-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 05/30/2016] [Indexed: 02/08/2023]
Abstract
Iron deficiency and immune activation are the two most frequent causes of anemia, both of which are based on disturbances of iron homeostasis. Iron deficiency anemia results from a reduction of the body’s iron content due to blood loss, inadequate dietary iron intake, its malabsorption, or increased iron demand. Immune activation drives a diversion of iron fluxes from the erythropoietic bone marrow, where hemoglobinization takes place, to storage sites, particularly the mononuclear phagocytes system in liver and spleen. This results in iron-limited erythropoiesis and anemia. This review summarizes current diagnostic and pathophysiological concepts of iron deficiency anemia and anemia of inflammation, as well as combined conditions, and provides a brief outlook on novel therapeutic options.
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Martinelli M, Strisciuglio C, Alessandrella A, Rossi F, Auricchio R, Campostrini N, Girelli D, Nobili B, Staiano A, Perrotta S, Miele E. Serum Hepcidin and Iron Absorption in Paediatric Inflammatory Bowel Disease. J Crohns Colitis 2016; 10:566-74. [PMID: 26733407 PMCID: PMC4957448 DOI: 10.1093/ecco-jcc/jjv242] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/26/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS We sought to correlate hepcidin levels in inflammatory bowel disease [IBD] children with disease activity, inflammatory markers, and iron load test [ILT] and to compare IBD patients with coeliac and healthy patients. METHODS Between December 2012 and June 2013, 145 subjects [50 IBD patients, 45 coeliac patients and 50 healthy controls] were included in the study. All patients underwent the following examinations: blood count, iron status, erythropoiesis parameters, serum hepcidin, C-reactive protein [CRP], and erythrocyte sedimentation rate [ESR]. In order to evaluate the efficacy of iron absorption, ILT was performed in IBD patients. Disease activity indexes and IBD duration, localisation, and therapy were also evaluated, and a faecal sample for calprotectin collected. RESULTS Serum hepcidin was significantly higher in IBD patients with active disease compared with both coeliac and healthy patients [p = 0.005, p = 0.003 respectively]. In a multivariate logistic regression model, having a Paediatric Crohn's Disease Activity Index [PCDAI] / Paediatric Ulcerative Colitis Activity Index [PUCAI] ≥ 30 resulted in the only variable independently associated with a positive serum hepcidin (odds ratio [OR] = 6.87; 95% confidence interval [CI] 1.4-33, p = 0.01]]. Patients with iron malabsorption [IM] showed higher values of ESR, CRP, and hepcidin [p = 0.02, p = 0.001, and p = 0.06, respectively]. Eight out of 12 [66.7%] children with IM showed an active disease compared with 6/31 [19.3%] children with normal ILT [p = 0.01]. Hepcidin levels correlated negatively with ILT [r = -0.451, p = 0.002], and positively with ferritin and CRP [r = 0.442, p = 0.0001; r = 0.243, p = 0.009, respectively] CONCLUSIONS Our study demonstrates that serum hepcidin is increased in IBD children with active disease and it is responsible for IM.
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Affiliation(s)
- Massimo Martinelli
- Department of Translational Medical Science, Section of Paediatrics, University of NaplesFederico II, Naples, Italy,Drs Martinelli and Strisciuglio participated equally in this study
| | - Caterina Strisciuglio
- Department of Woman, Child and General and Specialized Surgery, 2nd University of Naples, Naples, Italy;,Drs Martinelli and Strisciuglio participated equally in this study
| | - Annalisa Alessandrella
- Department of Translational Medical Science, Section of Paediatrics, University of NaplesFederico II, Naples, Italy
| | - Francesca Rossi
- Department of Woman, Child and General and Specialized Surgery, 2nd University of Naples, Naples, Italy
| | - Renata Auricchio
- Department of Translational Medical Science, Section of Paediatrics, University of NaplesFederico II, Naples, Italy
| | - Natascia Campostrini
- Department of Medicine, Section of Internal Medicine, University of Verona, Verona, Italy
| | - Domenico Girelli
- Department of Medicine, Section of Internal Medicine, University of Verona, Verona, Italy
| | - Bruno Nobili
- Department of Woman, Child and General and Specialized Surgery, 2nd University of Naples, Naples, Italy
| | - Annamaria Staiano
- Department of Translational Medical Science, Section of Paediatrics, University of NaplesFederico II, Naples, Italy
| | - Silverio Perrotta
- Department of Woman, Child and General and Specialized Surgery, 2nd University of Naples, Naples, Italy
| | - Erasmo Miele
- Department of Translational Medical Science, Section of Paediatrics, University of NaplesFederico II, Naples, Italy
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Abstract
The discovery of the iron-regulatory hormone hepcidin in 2001 has revolutionized our understanding of iron disorders, and its measurement should advance diagnosis/treatment of these conditions. Although several assays have been developed, a gold standard is still lacking, and efforts toward harmonization are ongoing. Nevertheless, promising applications can already be glimpsed, ranging from the use of hepcidin levels for diagnosing iron-refractory iron deficiency anemia to global health applications such as guiding safe iron supplementation in developing countries with high infection burden.
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38
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Koduru P, Abraham BP. The role of ferric carboxymaltose in the treatment of iron deficiency anemia in patients with gastrointestinal disease. Therap Adv Gastroenterol 2016; 9:76-85. [PMID: 26770269 PMCID: PMC4699280 DOI: 10.1177/1756283x15616577] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Iron deficiency anemia (IDA) is the most common form of nutritional anemia worldwide. Iron plays a pivotal role in vital functioning of almost every organ system. IDA affects both physical and psychological functioning of humans. Oral iron is considered as first-line therapy for the treatment of IDA due to low cost, good safety profile and ease of administration. However, the absorption of oral iron is affected by several factors and incidence of gastrointestinal side effects can lead to lack of adherence to therapy as well as poor efficacy. This has led to the emergence of intravenous iron therapy which is clearly superior to oral iron with higher increment of hemoglobin levels and rapid replenishment of iron stores. Ferric carboxymaltose (FCM) is a novel non-dextran intravenous iron form which has been approved for use in patients with iron deficiency who have had inadequate response to oral iron therapy, intolerance to oral iron, or nondialysis-dependent chronic kidney disease. The safety and efficacy of using FCM for the treatment of IDA has been demonstrated in several clinical trials. One dose can provide a large amount of iron and has a very short infusion time. It should be considered as first-line therapy in patients with active inflammation like inflammatory bowel disease when gastrointestinal absorption of oral iron may be compromised. It should also be given to patients who have inadequate response to oral iron therapy. It has been shown to be noninferior to other intravenous iron formulations with a good safety profile and produced fewer anaphylactic reactions.
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Affiliation(s)
- Pramoda Koduru
- Division of Gastroenterology and Hepatology, Houston Methodist Hospital, Houston, TX, USA
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39
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Toblli JE, Cao G, Angerosa M. Ferrous sulfate, but not iron polymaltose complex, aggravates local and systemic inflammation and oxidative stress in dextran sodium sulfate-induced colitis in rats. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:2585-97. [PMID: 26005335 PMCID: PMC4428360 DOI: 10.2147/dddt.s81863] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background and aims Iron deficiency is common in inflammatory bowel disease, yet oral iron therapy may worsen the disease symptoms and increase systemic and local oxidative stress. The aim of this study was to compare the effects of oral ferrous sulfate and iron polymaltose complex on inflammatory and oxidative stress markers in colitic rats. Methods Animals were divided into four groups with ten animals each. Rats of three groups received dextran sodium sulfate to induce colitis and animals of two of these groups received 5 mg iron/kg of body weight a day, as ferrous sulfate or iron polymaltose complex, for 7 days. Gross colon anatomy, histology of colon and liver, stainings of L-ferritin, Prussian blue, hepcidin, tumor necrosis factor-α, and interleukin-6, as well serum levels of liver enzymes, inflammatory markers, and iron markers, were assessed. Results Body weight, gross anatomy, crypt injury and inflammation scores, inflammatory parameters in liver and colon, as well as serum and liver hepcidin levels were not significantly different between colitic animals without iron treatment and colitic animals treated with iron polymaltose complex. In contrast, ferrous sulfate treatment caused significant worsening of these parameters. As opposed to ferrous sulfate, iron polymaltose complex caused less or no additional oxidative stress in the colon and liver compared to colitic animals without iron treatment. Conclusion Iron polymaltose complex had negligible effects on colonic tissue erosion, local or systemic oxidative stress, and local or systemic inflammation, even at high therapeutic doses, and may thus represent a valuable oral treatment of iron deficiency in inflammatory bowel disease.
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Affiliation(s)
- Jorge E Toblli
- Laboratory of Experimental Medicine, Hospital Alemán, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
| | - Gabriel Cao
- Laboratory of Experimental Medicine, Hospital Alemán, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
| | - Margarita Angerosa
- Laboratory of Experimental Medicine, Hospital Alemán, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
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40
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Kim KO. [Management of anemia in patients with inflammatory bowel disease]. THE KOREAN JOURNAL OF GASTROENTEROLOGY 2015; 65:145-50. [PMID: 25797377 DOI: 10.4166/kjg.2015.65.3.145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Anemia is one of the commonest extraintestinal manifestations of inflammatory bowel disease (IBD). The pathogenesis of anemia in IBD is complex but iron deficiency combined with inflammation is the most common factor related to the development of anemia. However, other causes such as vitamin B12 and folate deficiency, hemolysis, myelosuppression and drug also should not be overlooked. In addition to ferritin, inflammatory markers and new biochemical parameters such as hepcidin and ferritin index are being tested as diagnostic a tool. First step for treatment is disease activity control and iron supplementation. Although oral iron is widely used, intravenous iron therapy should be considered in patients who are intolerant to oral iron therapy, have severe and refractory anemia or are in active disease state. Recently, new intravenous iron formulations have been introduced and due to their safety and easy usage, they have become the standard treatment modality for managing anemia in IBD. Erythropoietin and transfusion can be considered in specific situations. Vitamin B12 and folate supplementation is also important in patients who are deficient of these micronutrients. Since anemia in IBD patients could significantly influence the disease outcome, further studies and standard guideline for IBD are needed.
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Affiliation(s)
- Kyeong Ok Kim
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
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41
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Rogler G, Vavricka S. Anemia in inflammatory bowel disease: an under-estimated problem? Front Med (Lausanne) 2015; 1:58. [PMID: 25646159 PMCID: PMC4298217 DOI: 10.3389/fmed.2014.00058] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 12/18/2014] [Indexed: 12/16/2022] Open
Abstract
Anemia is one of the most frequent complications and/or extraintestinal manifestations of inflammatory bowel disease (IBD). Iron deficiency is the most important cause of anemia in Crohn’s disease and ulcerative colitis patients. Iron deficiency even without anemia may impact the quality of life of our IBD patients. In the last 10 years, the understanding of the pathology of iron-deficiency anemia and “anemia of chronic diseases” has increased; new diagnostic tools have been developed and new therapeutic strategies have been discussed. Hepcidin has been identified to be a central regulator of iron absorption from the intestine and of iron plasma levels. Hepcidin is regulated by iron deficiency but also as an acute phase protein by pro-inflammatory mediators such as interleukin-6. Innovative diagnostic tools have not been introduced in clinical routine or are not available for routine diagnostics. As iron substitution therapy is easy these days with a preference for intravenous substitution, the impact of differential diagnosis of anemia in IBD patients is underestimated.
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Affiliation(s)
- Gerhard Rogler
- Division of Gastroenterology and Hepatology, University Hospital Zürich , Zürich , Switzerland
| | - Stephan Vavricka
- Division of Gastroenterology and Hepatology, University Hospital Zürich , Zürich , Switzerland ; Division of Gastroenterology, Triemlispital , Zürich , Switzerland
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Shanmugam NKN, Trebicka E, Fu LL, Shi HN, Cherayil BJ. Intestinal inflammation modulates expression of the iron-regulating hormone hepcidin depending on erythropoietic activity and the commensal microbiota. THE JOURNAL OF IMMUNOLOGY 2014; 193:1398-407. [PMID: 24973448 DOI: 10.4049/jimmunol.1400278] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
States of chronic inflammation such as inflammatory bowel disease are often associated with dysregulated iron metabolism and the consequent development of an anemia that is caused by maldistribution of iron. Abnormally elevated expression of the hormone hepcidin, the central regulator of systemic iron homeostasis, has been implicated in these abnormalities. However, the mechanisms that regulate hepcidin expression in conditions such as inflammatory bowel disease are not completely understood. To clarify this issue, we studied hepcidin expression in mouse models of colitis. We found that dextran sulfate sodium-induced colitis inhibited hepcidin expression in wild-type mice but upregulated it in IL-10-deficient animals. We identified two mechanisms contributing to this difference. Firstly, erythropoietic activity, as indicated by serum erythropoietin concentrations and splenic erythropoiesis, was higher in the wild-type mice, and pharmacologic inhibition of erythropoiesis prevented colitis-associated hepcidin downregulation in these animals. Secondly, the IL-10 knockout mice had higher expression of multiple inflammatory genes in the liver, including several controlled by STAT3, a key regulator of hepcidin. The results of cohousing and fecal transplantation experiments indicated that the microbiota was involved in modulating the expression of hepcidin and other STAT3-dependent hepatic genes in the context of intestinal inflammation. Our observations thus demonstrate the importance of erythropoietic activity and the microbiota in influencing hepcidin expression during colitis and provide insight into the dysregulated iron homeostasis seen in inflammatory diseases.
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Affiliation(s)
- Nanda Kumar N Shanmugam
- Department of Pediatrics, Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02129; and
| | - Estela Trebicka
- Department of Pediatrics, Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02129; and
| | - Ling-Lin Fu
- Department of Pediatrics, Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02129; and Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310035, People's Republic of China
| | - Hai Ning Shi
- Department of Pediatrics, Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02129; and
| | - Bobby J Cherayil
- Department of Pediatrics, Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02129; and
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Abstract
The epithelium of the gastrointestinal tract is one of the most versatile tissues in the organism, responsible for providing a tight barrier between dietary and bacterial antigens and the mucosal and systemic immune system while maintaining efficient digestive and absorptive processes to ensure adequate nutrient and energy supply. Inflammatory bowel diseases (Crohn's disease and ulcerative colitis) are associated with a breakdown of both functions, which in some cases are clearly interrelated. In this updated literature review, we focus on the effects of intestinal inflammation and the associated immune mediators on selected aspects of the transepithelial transport of macronutrients and micronutrients. The mechanisms responsible for nutritional deficiencies are not always clear and could be related to decreased intake, malabsorption, and excess losses. We summarize the known causes of nutrient deficiencies and the mechanism of inflammatory bowel disease-associated diarrhea. We also overview the consequences of impaired epithelial transport, which infrequently transcend its primary purpose to affect the gut microbial ecology and epithelial integrity. Although some of those regulatory mechanisms are relatively well established, more work needs to be done to determine how inflammatory cytokines can alter the transport process of nutrients across the gastrointestinal and renal epithelia.
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44
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Busti F, Campostrini N, Martinelli N, Girelli D. Iron deficiency in the elderly population, revisited in the hepcidin era. Front Pharmacol 2014; 5:83. [PMID: 24795637 PMCID: PMC4006029 DOI: 10.3389/fphar.2014.00083] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 04/04/2014] [Indexed: 12/13/2022] Open
Abstract
Iron deficiency (ID) is relatively common among the elderly population, contributing substantially to the high prevalence of anemia observed in the last decades of life, which in turn has important implications both on quality of life and on survival. In elderly subjects, ID is often multifactorial, i.e., due to multiple concurring causes, including inadequate dietary intake or absorption, occult bleeding, medications. Moreover, because of the typical multimorbidity of aged people, other conditions leading to anemia frequently coexist and make diagnosis of ID particularly challenging. Treatment of ID is also problematic in elderly, since response to oral iron is often slow, with a substantial fraction of patients showing refractoriness and requiring cumbersome intravenous administration. In the last decade, the discovery of the iron regulatory hormone hepcidin has revolutionized our understanding of iron pathophysiology. In this review, we revisit ID among elderly people in the light of the impressive recent advances on knowledge of iron regulation, and discuss how hepcidin may help in diagnosis and treatment of this common clinical condition.
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45
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Gotardo &EMF, Ribeiro GDA, Clemente TRL, Moscato CH, Tomé RBG, Rocha T, Pedrazzoli Jr J, Ribeiro ML, Gambero A. Hepcidin expression in colon during trinitrobenzene sulfonic acid-induced colitis in rats. World J Gastroenterol 2014; 20:4345-4352. [PMID: 24764672 PMCID: PMC3989970 DOI: 10.3748/wjg.v20.i15.4345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 12/18/2013] [Accepted: 01/20/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate hepcidin expression, interleukin-6 (IL-6) production and iron levels in the rat colon in the presence of trinitrobenzene sulfonic acid (TNBS)-induced colitis.
METHODS: In rats, we evaluated the severity of colitis induced by repeated TNBS administration using macroscopic and microscopic scoring systems and myeloperoxidase activity measurements. The colonic levels of hepcidin, tumor necrosis factor alpha (TNF-α), IL-10 and IL-6 were measured by Enzyme-Linked Immunosorbent Assay, and hepcidin-25 expression and iron deposition were analyzed by immunohistochemistry and the Prussian blue reaction, respectively. Stat-3 phosphorylation was assessed by Western blot analysis. Hematological parameters, iron and transferrin levels, and transferrin saturation were also measured. Additionally, the ability of iron, pathogen-derived molecules and IL-6 to induce hepcidin expression in HT-29 cells was evaluated.
RESULTS: Repeated TNBS administration to rats resulted in macroscopically and microscopically detectable colon lesions and elevated colonic myeloperoxidase activity. Hepcidin-25 protein levels were increased in colonic surface epithelia in colitic rats (10.2 ± 4.0 pg/mg protein vs 71.0 ± 8.4 pg/mg protein, P < 0.01). Elevated IL-6 levels (8.2 ± 1.7 pg/mg protein vs 14.7 ± 0.7 pg/mg protein, P < 0.05), TNF-α levels (1.8 ± 1.2 pg/mg protein vs 7.4 ± 2.1 pg/mg protein, P < 0.05) and Stat-3 phosphorylation were also observed. Systemic alterations in iron homeostasis, hepcidin levels and anemia were not detected in colitic rats. Iron deposition in the colon was only observed during colitis. Hepcidin gene expression was increased in HT-29 cells after IL-6 and lipopolysaccharide [a toll-like receptor 4 (TLR-4) ligand] treatment. Deferoxamine, ferric citrate and peptidoglycan (a TLR-2 ligand) were unable to alter the in vitro expression of hepcidin in HT-29 cells.
CONCLUSION: Colitis increased local hepcidin-25 expression, which was associated with the IL-6/Stat-3 signaling pathway. An increase in local iron sequestration was also observed, but additional studies are needed to determine whether this sequestration is a defensive or pathological response to intestinal inflammation.
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Guagnozzi D, Lucendo AJ. Anemia in inflammatory bowel disease: A neglected issue with relevant effects. World J Gastroenterol 2014; 20:3542-3551. [PMID: 24707137 PMCID: PMC3974521 DOI: 10.3748/wjg.v20.i13.3542] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 11/22/2013] [Accepted: 03/05/2014] [Indexed: 02/06/2023] Open
Abstract
Anemia, a common complication associated with inflammatory bowel disease (IBD), is frequently overlooked in the management of IBD patients. Unfortunately, it represents one of the major causes of both decreased quality of life and increased hospital admissions among this population. Anemia in IBD is pathogenically complex, with several factors contributing to its development. While iron deficiency is the most common cause, vitamin B12 and folic acid deficiencies, along with the effects of pro-inflammatory cytokines, hemolysis, drug therapies, and myelosuppression, have also been identified as the underlying etiology in a number of patients. Each of these etiological factors thus needs to be identified and corrected in order to effectively manage anemia in IBD. Because the diagnosis of anemia in IBD often presents a challenge, combinations of several hematimetric and biochemical parameters should be used. Recent studies underscore the importance of determining the ferritin index and hepcidin levels in order to distinguish between iron deficiency anemia, anemia due to chronic disease, or mixed anemia in IBD patients. With regard to treatment, the newly introduced intravenous iron formulations have several advantages over orally-administered iron compounds in treating iron deficiency in IBD. In special situations, erythropoietin supplementation and biological therapies should be considered. In conclusion, the management of anemia is a complex aspect of treating IBD patients, one that significantly influences the prognosis of the disease. As a consequence, its correction should be considered a specific, first-line therapeutic goal in the management of these patients.
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