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Neamtu RI, Craina M, Dahma G, Popescu AV, Erimescu AG, Citu I, Dobrescu A, Horhat FG, Vulcanescu DD, Gorun F, Bernad ES, Motoc A, Citu IC. Heavy metal ion concentration in the amniotic fluid of preterm and term pregnancies from two cities with different industrial output. Exp Ther Med 2022; 23:111. [PMID: 34970334 PMCID: PMC8713173 DOI: 10.3892/etm.2021.11034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 11/10/2021] [Indexed: 11/19/2022] Open
Abstract
The growth and development of the fetus is a complex phenomenon that can be influenced by several variables. High quantities of heavy metal ions in the amniotic fluid have been linked to poor health, especially in industrial, polluted and poor areas. The aim of the present study was to assess the differences in the concentration of these ions between preterm (weeks 15-37) and term pregnancies (starting at week 37). Another objective was to compare pregnancies from two cities with different industry levels. Two sample lots from two Romanian cities were analyzed. A total of 100 patients from Timisoara were compared with 60 from Petrosani, a heavy industry city in Romania. Demographic data were collected, and amniocentesis was performed on all women. Lead (Pb), copper (Cu), nickel (Ni), cadmium (Cd), arsenic (As), iron (Fe) and zinc (Zn) concentrations were assessed. Descriptive and analytical statistics were performed using the Mann-Whitney U test for non-parametric data and the Fisher's exact test for categorical data. In addition, categorical data was represented graphically. In the Timisoara cohort, the differences in heavy metal concentrations between preterm and term pregnancies were not statistically significant. In the Petrosani cohort, however, the concentrations of Zn (P=0.02606) and Cd (P=0.01512) were higher in preterm than in term pregnancies. When comparing the two cohorts as a whole, the concentration of Pb (P=0.04513), Cd (P=0.00002), As (P=0.03027) and Zn (P<0.00001) were higher in the patients from Petrosani than in those from Timisoara. Only Cu concentrations were higher in the Timisoara cohort (P<0.00001). The concentrations of Ni (P=0.78150) and Fe (P=0.44540) did not differ statistically. Thus, amniocentesis is an important diagnostic and exploratory tool in determining differences in the concentrations of elements such as heavy metal ions. Research over a longer period of time should be carried out to examine the relation between heavy metal ions concentration and possible postnatal health outcomes.
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Affiliation(s)
- Radu Ionut Neamtu
- Department of Obstetrics-Gynecology and Neonatology, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Marius Craina
- Department of Obstetrics-Gynecology and Neonatology, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - George Dahma
- Department of Obstetrics-Gynecology and Neonatology, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Alin Viorel Popescu
- Department of Obstetrics-Gynecology and Neonatology, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Adelina Geanina Erimescu
- Department of Obstetrics-Gynecology and Neonatology, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Ioana Citu
- Department of Internal Medicine I, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Amadeus Dobrescu
- Department of Surgery, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Florin George Horhat
- Multidisciplinary Research Center on Antimicrobial Resistance (Multi-Rez), Microbiology Department, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania.,Clinical Laboratory, 'Louis Turcanu' Emergency Hospital for Children, 300011 Timisoara, Romania
| | - Dan Dumitru Vulcanescu
- Multidisciplinary Research Center on Antimicrobial Resistance (Multi-Rez), Microbiology Department, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania.,Clinical Laboratory, 'Louis Turcanu' Emergency Hospital for Children, 300011 Timisoara, Romania
| | - Florin Gorun
- Department of Obstetrics-Gynecology and Neonatology, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Elena Silvia Bernad
- Department of Internal Medicine I, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Andrei Motoc
- Department of Obstetrics-Gynecology and Neonatology, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania.,Department of Anatomy and Embryology, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Ioan Cosmin Citu
- Department of Obstetrics-Gynecology and Neonatology, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania
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Regional Diversities in Fibrogenesis Weighed as a Key Determinant for Atrial Arrhythmogenesis. Biomedicines 2021; 9:biomedicines9121900. [PMID: 34944715 PMCID: PMC8698388 DOI: 10.3390/biomedicines9121900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/10/2021] [Accepted: 12/11/2021] [Indexed: 11/18/2022] Open
Abstract
Atrial fibrosis plays a key role in atrial myopathy, resulting in the genesis of atrial fibrillation (AF). The abnormal distribution of fibrotic tissue, electrical coupling, paracrine interactions, and biomechanical–electrical interactions have all been suggested as causes of fibrosis-related arrhythmogenesis. Moreover, the regional difference in fibrogenesis, specifically the left atrium (LA) exhibiting a higher arrhythmogenesis and level of fibrosis than the right atrium (RA) in AF, is a key contributor to atrial arrhythmogenesis. LA fibroblasts have greater profibrotic cellular activities than RA fibroblasts, but knowledge about the regional diversity of atrial regional fibrogenesis remains limited. This article provides a comprehensive review of research findings on the association between fibrogenesis and arrhythmogenesis from laboratory to clinical evidence and updates the current understanding of the potential mechanism underlying the difference in fibrogenesis between the LA and RA.
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103
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(Ferric carboxymaltose - a promising molecule in the treatment of iron deficiency in patients with heart failure). COR ET VASA 2021. [DOI: 10.33678/cor.2021.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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104
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Terada R, Sato T. Benefits and Risks of Iron Interventions in Infants in Bangladesh. N Engl J Med 2021; 385:2199. [PMID: 34874639 DOI: 10.1056/nejmc2116125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Rui Terada
- University of Tokyo Hospital, Tokyo, Japan
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105
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Nita E, Bairaktari E, Kolios G, Migkos MP, Somarakis GP, Markatseli T, Archimandriti D, Tsaousi C, Voulgari PV. Role of Hepcidin in Anemia of Chronic Disease in Rheumatoid Arthritis. J Lab Physicians 2021; 13:317-322. [PMID: 34975249 PMCID: PMC8714409 DOI: 10.1055/s-0041-1732827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Objective Anemia of chronic disease is a frequent consequence in rheumatoid arthritis and is associated with major clinical and patient outcomes. The present cross-sectional study explored the role of hepcidin (HEP) in anemia of chronic disease in rheumatoid arthritis by studying its relationships with markers of anemia, iron metabolism, inflammation, and erythropoiesis. Methods Blood samples from anemic ( n = 43) and nonanemic ( n = 43) rheumatoid arthritis patients were analyzed for markers of anemia (hemoglobin, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, red cells distribution width, and reticulocyte hemoglobin), iron metabolism (iron, total iron binding capacity, ferritin, transferrin saturation, soluble transferrin receptor), inflammation (erythrocyte sedimentation rate, C-reactive protein, and interleukin 6), and erythropoiesis (erythropoietin and HEP). Correlation analysis was used to identify relationships between HEP and all other variables. Principal component analysis was used to identify common underlying dimensions representing linear combinations of all variables. Results HEP had statistically significant mostly moderate-to-large correlations with markers of anemia (0.30-0.70, all p < 0.01), small correlation with markers of iron metabolism and markers of inflammation ( r = 0.20-0.40, all p < 0.01), and moderate correlations with markers of erythropoiesis. Principal component analysis revealed two underlying components (factors) capturing approximately 50% of total variability. Factor 1 comprised mainly of markers of anemia, iron metabolism, and erythropoiesis and was related to "erythrocyte health status," while factor 2 comprised mainly markers of inflammation and iron metabolism and was related to "acute phase reactants." HEP was the only variable demonstrating substantial loadings on both factors. Conclusions HEP is related to markers of anemia, iron metabolism, inflammation, and erythropoiesis. In addition, when all variables are "reduced" to a minimum number of two "latent" factors, HEP is loaded on both, thus underlying its pivotal role in the complex interaction of the erythropoietic response in inflammation-induced anemia and/or functional iron deficiency.
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Affiliation(s)
- Eleni Nita
- Microbiology Laboratory, University Hospital of Ioannina, Ioannina, Greece
| | - Eleni Bairaktari
- Laboratory of Clinical Chemistry, Medical School, University of Ioannina, Ioannina, Greece
| | - George Kolios
- Laboratory of Clinical Chemistry, Medical School, University of Ioannina, Ioannina, Greece
| | - Michail P. Migkos
- Rheumatology Clinic, Department of Internal Medicine, Medical School, University of Ioannina, Ioannina, Greece
| | - Georgios-Petros Somarakis
- Rheumatology Clinic, Department of Internal Medicine, Medical School, University of Ioannina, Ioannina, Greece
| | - Theodora Markatseli
- Rheumatology Clinic, Department of Internal Medicine, Medical School, University of Ioannina, Ioannina, Greece
| | - Dimitra Archimandriti
- Rheumatology Clinic, Department of Internal Medicine, Medical School, University of Ioannina, Ioannina, Greece
| | - Christina Tsaousi
- Hematological Laboratory, University Hospital of Ioannina, Ioannina, Greece
| | - Paraskevi V. Voulgari
- Rheumatology Clinic, Department of Internal Medicine, Medical School, University of Ioannina, Ioannina, Greece
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Abstract
ABSTRACT Rheumatoid arthritis (RA) is a multisystem disease that affects the joints and various organs, resulting in compromised quality of life and increased mortality. A wide spectrum of treatment options is available for RA. Conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) are the first-line of treatment for RA, whereas tumor necrosis factor α inhibitors are commonly used as a second-line biological disease-modifying antirheumatic drug following inadequate response to csDMARDs. However, remission remains difficult to achieve. No single agent is effective for all patients. It is important to consider patients' comorbidities, perspectives, and preferences when selecting treatment.Interleukin 6 (IL-6) plays a prominent role in the pathophysiology of RA and is an important therapeutic target for RA. Tocilizumab and sarilumab are approved IL-6 inhibitors, which have demonstrated good efficacy and tolerability as combination therapy or monotherapy in RA patients with inadequate response to csDMARDs or tumor necrosis factor α inhibitors. Apart from alleviating joint symptoms, inducing remission, and reducing structural damage, tocilizumab and sarilumab exhibit additional advantages in alleviating extra-articular symptoms, such as fatigue and morning stiffness, and have positive effect on anemia and glucose metabolism. Additionally, evidence showed that certain patient subgroups, such as those with comorbidities including anemia and diabetes mellitus, those with early RA, those with high baseline IL-6 levels, those at high risk of tuberculosis infection, or those intolerant to methotrexate monotherapy, may benefit from IL-6 inhibition. Given these advantages, tocilizumab and sarilumab can be considered earlier as a rational choice for treating RA in suitable patients. Future clinical investigations will help refine the use of these agents.
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Affiliation(s)
- Ronald Man Lung Yip
- From the Integrated Diagnostic and Medical Centre, Tung Wah Group of Hospitals, Kowloon
| | - Cheuk Wan Yim
- Department of Medicine, Tseung Kwan O Hospital, New Territories, Hong Kong
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107
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Zaman BA, Rasool SO, Merza MA, Abdulah DM. Hepcidin-to-ferritin ratio: A potential novel index to predict iron overload-liver fibrosis in ß-thalassemia major. Transfus Clin Biol 2021; 29:153-160. [PMID: 34856399 DOI: 10.1016/j.tracli.2021.11.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 11/25/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVES We aimed to determine a threshold cutoff for hepcidin, ferritin, and the hepcidin-to-ferritin ratio in the diagnosis of liver fibrosis caused by iron overload in chronic hepatitis C virus (HCV)-free ß-thalassemia major patients . METHODS This 1:1-matched case-control study included 102 individuals (3-30 yr.); 51 ß-thalassemia major patients with iron overload , and 51 apparently healthy individuals. RESULTS The highest areas under the receiver operating characteristic curves (AUC-ROCs) for the diagnosis of patients vs. controls had overlapping 95% confidence intervals (CIs): serum hepcidin (0.758; 0.64-0.87; P ˂ 0.001), serum ferritin (1.000; 1.00-1.00; P˂0.001), and the hepcidin/ferritin ratio (1.000; 1.00-1.00; P˂0.001). For differentiation of patients with liver fibrosis stages of F0-F1 vs. F2-F4 and F0-F1 vs. F3-F4, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) with P-values˂0.001 were the only statistically significant parameters, while the AUC-ROCs of the hepcidin/ferritin ratio (0.631, P=0.188 and 0.684, P=0.098) exhibited 90% and 89.5% sensitivity, respectively, in staging liver fibrosis. CONCLUSION Our results showed that the hepcidin/ferritin ratio is as effective as the APRI and maybe a better predictor for the diagnosis of liver fibrosis and discriminating its stages, with excellent sensitivity and specificity compared to its components.
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Affiliation(s)
- B A Zaman
- Department of Pharmacology, College of Pharmacy, University of Duhok, Kurdistan region, Iraq.
| | - S O Rasool
- Department of Clinical Pharmacy, College of Pharmacy, University of Duhok, Kurdistan region, Iraq.
| | - M A Merza
- Azadi Teaching Hospital, Department of Internal Medicine, College of Pharmacy, University of Duhok, Kurdistan region, Iraq.
| | - D M Abdulah
- Community Health Unit, College of Nursing, University of Duhok, Kurdistan region, Iraq.
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108
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Joshi PK, Patel SC, Shreya D, Zamora DI, Patel GS, Grossmann I, Rodriguez K, Soni M, Sange I. Hereditary Hemochromatosis: A Cardiac Perspective. Cureus 2021; 13:e20009. [PMID: 34987900 PMCID: PMC8716004 DOI: 10.7759/cureus.20009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2021] [Indexed: 11/21/2022] Open
Abstract
Hereditary hemochromatosis (HH) is a common genetic metabolic disorder characterized by excessive iron absorption and elevated serum iron levels, which accumulate in various organs, such as the heart, pancreas, gonads, and damage these organs. There are only a few articles and clinical studies describing the characteristics of cardiac involvement in HH along with the significance of early diagnosis and management in preventing complications. In this review article, we have reviewed multiple pieces of literature and gathered available information regarding the subject. We compiled the data to investigate the importance of early detection of symptoms, regular monitoring, and prompt management with strict adherence to reverse or prevent complications. This article has reviewed different aspects of cardiac hemochromatosis, such as pathogenesis, clinical presentation, diagnosis, and management. Recognition of early symptoms, diagnosis of cardiac involvement with various modalities, and implementation of early treatment are essentially the foundation of better outcomes in HH.
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109
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Crugliano G, Serra R, Ielapi N, Battaglia Y, Coppolino G, Bolignano D, Bracale UM, Pisani A, Faga T, Michael A, Provenzano M, Andreucci M. Hypoxia-Inducible Factor Stabilizers in End Stage Kidney Disease: "Can the Promise Be Kept?". Int J Mol Sci 2021; 22:12590. [PMID: 34830468 PMCID: PMC8618724 DOI: 10.3390/ijms222212590] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/12/2021] [Accepted: 11/19/2021] [Indexed: 12/13/2022] Open
Abstract
Anemia is a common complication of chronic kidney disease (CKD). The prevalence of anemia in CKD strongly increases as the estimated Glomerular Filtration Rate (eGFR) decreases. The pathophysiology of anemia in CKD is complex. The main causes are erythropoietin (EPO) deficiency and functional iron deficiency (FID). The administration of injectable preparations of recombinant erythropoiesis-stimulating agents (ESAs), especially epoetin and darbepoetin, coupled with oral or intravenous(iv) iron supplementation, is the current treatment for anemia in CKD for both dialysis and non-dialysis patients. This approach reduces patients' dependence on transfusion, ensuring the achievement of optimal hemoglobin target levels. However, there is still no evidence that treating anemia with ESAs can significantly reduce the risk of cardiovascular events. Meanwhile, iv iron supplementation causes an increased risk of allergic reactions, gastrointestinal side effects, infection, and cardiovascular events. Currently, there are no studies defining the best strategy for using ESAs to minimize possible risks. One class of agents under evaluation, known as prolyl hydroxylase inhibitors (PHIs), acts to stabilize hypoxia-inducible factor (HIF) by inhibiting prolyl hydroxylase (PH) enzymes. Several randomized controlled trials showed that HIF-PHIs are almost comparable to ESAs. In the era of personalized medicine, it is possible to envisage and investigate specific contexts of the application of HIF stabilizers based on the individual risk profile and mechanism of action.
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Affiliation(s)
- Giuseppina Crugliano
- Department of Health Sciences, “Magna Graecia” University, I-88100 Catanzaro, Italy; (G.C.); (G.C.); (D.B.); (T.F.); (A.M.)
| | - Raffaele Serra
- Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Viale Europa, I-88100 Catanzaro, Italy;
- Interuniversity Center of Phlebolymphology (CIFL), “Magna Graecia” University, I-88100 Catanzaro, Italy
| | - Nicola Ielapi
- Department of Public Health and Infectious Disease, “Sapienza” University of Rome, I-00185 Roma, Italy;
| | - Yuri Battaglia
- Division of Nephrology and Dialysis, St. Anna University-Hospital, I-44121 Ferrara, Italy;
| | - Giuseppe Coppolino
- Department of Health Sciences, “Magna Graecia” University, I-88100 Catanzaro, Italy; (G.C.); (G.C.); (D.B.); (T.F.); (A.M.)
| | - Davide Bolignano
- Department of Health Sciences, “Magna Graecia” University, I-88100 Catanzaro, Italy; (G.C.); (G.C.); (D.B.); (T.F.); (A.M.)
| | - Umberto Marcello Bracale
- Vascular Surgery Unit, Department of Public Health, University Federico II of Naples, I-80131 Naples, Italy;
| | - Antonio Pisani
- Department of Public Health, University Federico II of Naples, I-80131 Naples, Italy;
| | - Teresa Faga
- Department of Health Sciences, “Magna Graecia” University, I-88100 Catanzaro, Italy; (G.C.); (G.C.); (D.B.); (T.F.); (A.M.)
| | - Ashour Michael
- Department of Health Sciences, “Magna Graecia” University, I-88100 Catanzaro, Italy; (G.C.); (G.C.); (D.B.); (T.F.); (A.M.)
| | - Michele Provenzano
- Department of Medical and Surgical Sciences, University Magna Graecia of Catanzaro, Viale Europa, I-88100 Catanzaro, Italy;
| | - Michele Andreucci
- Department of Health Sciences, “Magna Graecia” University, I-88100 Catanzaro, Italy; (G.C.); (G.C.); (D.B.); (T.F.); (A.M.)
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Peng Y, Chang X, Lang M. Iron Homeostasis Disorder and Alzheimer's Disease. Int J Mol Sci 2021; 22:12442. [PMID: 34830326 PMCID: PMC8622469 DOI: 10.3390/ijms222212442] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/09/2021] [Accepted: 11/10/2021] [Indexed: 12/14/2022] Open
Abstract
Iron is an essential trace metal for almost all organisms, including human; however, oxidative stress can easily be caused when iron is in excess, producing toxicity to the human body due to its capability to be both an electron donor and an electron acceptor. Although there is a strict regulation mechanism for iron homeostasis in the human body and brain, it is usually inevitably disturbed by genetic and environmental factors, or disordered with aging, which leads to iron metabolism diseases, including many neurodegenerative diseases such as Alzheimer's disease (AD). AD is one of the most common degenerative diseases of the central nervous system (CNS) threatening human health. However, the precise pathogenesis of AD is still unclear, which seriously restricts the design of interventions and treatment drugs based on the pathogenesis of AD. Many studies have observed abnormal iron accumulation in different regions of the AD brain, resulting in cognitive, memory, motor and other nerve damages. Understanding the metabolic balance mechanism of iron in the brain is crucial for the treatment of AD, which would provide new cures for the disease. This paper reviews the recent progress in the relationship between iron and AD from the aspects of iron absorption in intestinal cells, storage and regulation of iron in cells and organs, especially for the regulation of iron homeostasis in the human brain and prospects the future directions for AD treatments.
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Affiliation(s)
- Yu Peng
- CAS Center for Excellence in Biotic Interactions, College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China; (Y.P.); (X.C.)
| | - Xuejiao Chang
- CAS Center for Excellence in Biotic Interactions, College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China; (Y.P.); (X.C.)
| | - Minglin Lang
- CAS Center for Excellence in Biotic Interactions, College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China; (Y.P.); (X.C.)
- College of Life Science, Agricultural University of Hebei, Baoding 071000, China
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111
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Iida A, Nakai R, Yoshida J, Sano K, Hondo E. Expression and antimicrobial activity of liver-expressed antimicrobial peptides in the ovaries of the viviparous teleost Xenotoca eiseni. FISH & SHELLFISH IMMUNOLOGY 2021; 118:405-410. [PMID: 34582977 DOI: 10.1016/j.fsi.2021.09.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/22/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
The mechanism via which the mothers of viviparous animals regulate the internal environment of pregnancy-associated organs for maintaining offspring growth is poorly understood. Environmental niches in organs contain fluid components for supporting embryonic growth; however, they may serve as nutrients for microbes. Therefore, microbial control is essential in viviparous animals to reduce the risk of infection in the ovarian lumen. Its importance may be higher than that in the case of oviparous animals. In this study, we investigated the antimicrobial factors in a viviparous teleost, Xenotoca eiseni. Four transcripts of the liver-expressed antimicrobial peptide (LEAP) were identified via RNA-Seq analysis. Some of the genes were expressed in the ovaries or intraovarian embryos of the fish. In particular, high expression of leap1a was detected in the ovaries of both pregnant and non-pregnant fish. Moreover, the ovary extracts from X. eiseni and transformed leap genes exhibited antimicrobial activity against Escherichia coli. Our results suggest that viviparous teleosts utilize antimicrobial peptides to reduce the risk of infection in the ovarian lumen.
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Affiliation(s)
- Atsuo Iida
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Tokai National Higher Education and Research System, Nagoya, Japan.
| | - Risako Nakai
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Tokai National Higher Education and Research System, Nagoya, Japan
| | - Junki Yoshida
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Tokai National Higher Education and Research System, Nagoya, Japan
| | - Kaori Sano
- Department of Chemistry, Faculty of Science, Josai University, Saitama, Japan
| | - Eiichi Hondo
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Tokai National Higher Education and Research System, Nagoya, Japan
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Kondaiah P, Palika R, Mashurabad P, Singh Yaduvanshi P, Sharp P, Pullakhandam R. Effect of zinc depletion/repletion on intestinal iron absorption and iron status in rats. J Nutr Biochem 2021; 97:108800. [PMID: 34118433 DOI: 10.1016/j.jnutbio.2021.108800] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/31/2021] [Accepted: 05/31/2021] [Indexed: 01/01/2023]
Abstract
Iron and zinc deficiencies likely coexist in general population. We have previously demonstrated that zinc treatment induces while zinc deficiency inhibits iron absorption in intestinal cell culture models, but this needs to be tested in vivo. In the present study we assessed intestinal iron absorption, iron status (haemoglobin), red blood cell number, plasma ferritin, transferrin receptor, hepcidin) and tissue iron levels in zinc depleted, replete and pair fed control rats. Zinc depletion led to reduction in body weight, tissue zinc levels, intestinal iron absorption, protein and mRNA expression of iron transporters, the divalent metal ion transporter-1, hephaestin and ferroportin, but elevated the intestinal and liver tissue iron levels compared with the pair fed control rats. Zinc repletion led to a significant weight gain compared to zinc deficient rats and normalized the iron absorption, iron transporter expression, tissue iron levels to that of pair fed control rats. Surprisingly, haemoglobin levels and red blood cell number reduced significantly in zinc repleted rats, which could be due to rapid weight gain. Together, these results indicate that whole body zinc status has profound influence on growth, intestinal absorption and systemic utilization of iron, mediated via modulation of iron transporter expression.
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Affiliation(s)
- Palsa Kondaiah
- ICMR-National Institute of Nutrition, Hyderabad, Telangana, India
| | | | | | | | - Paul Sharp
- Department of Nutritional Sciences, Kings College London, London, UK
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113
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Tasinov O, Kiselova-Kaneva Y, Ivanova D, Pasheva M, Vankova D, Ivanova D. Ferrum phosphoricum D12 Treatment Affects J774A.1 Cell Proliferation, Transcription Levels of Iron Metabolism, Antioxidant Defense, and Inflammation-related Genes. HOMEOPATHY 2021; 111:113-120. [PMID: 34634834 DOI: 10.1055/s-0041-1731312] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Ferrum phosphoricum (FP) is prescribed as a homeopathic remedy to treat the early stages of fever and inflammation in cases of colds or flu, muscle fatigue and anemia. We aimed to analyze the molecular mechanisms of action of FP D12 on cell proliferation and mRNA expression of iron metabolism, antioxidant defense and inflammation-related genes in mouse J774A.1 macrophages. METHODS Cell proliferation was examined using the MTT test. RT-qPCR analyses were performed to estimate gene expression changes. Relative gene expression levels were calculated using the 2-ΔΔCt method. The effect of treatment using FP D12 tablets was compared with that using placebo tablets (PT). RESULTS FP D12 in low concentrations (0.0125 mg/mL to 0.025 mg/mL) significantly stimulated proliferation of J774A.1 cells by up to 11% (p < 0.01) versus control untreated cells and by up to 40% (p < 0.01) versus PT-treated cells in the respective concentration. FP D12 versus PT induced a significant increase in mRNA expression of ferritin light chain (Ftl1) (by 8-fold, p < 0.01), β-2-microglobulin (B2m) (by 2.5-fold, p < 0.05) and iron-responsive element binding protein 2 (Ireb2) (by 4-fold, p < 0.05), and induced a slight decrease in myosin IE (Myo1e) mRNA expression levels (by 0.4-fold, p < 0.01) in macrophages. A highly significant (r2 = 0.99, p < 0.05) correlation was observed between Ireb2 and B2m transcription levels. Significant stimulation of antioxidant enzyme Gpx-1 (by 1.27-fold, p < 0.01) in cells by 0.025 mg/mL FP D12, but a slight decrease (by 0.12-fold, p < 0.05) in 0.0125 mg/mL-treated cells, was observed. A significant increase in the gene expression of IL-1β (by 3.5-fold, р < 0.05) in macrophages was also detected. CONCLUSION Ferrum phosphoricum in D12 dilution potentially exhibits iron retention, antioxidant and immunomodulation activities, possibly by modulating transcription levels of related genes in non-stimulated mouse macrophages.
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Affiliation(s)
- Oskan Tasinov
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Faculty of Pharmacy, Medical University-Varna, Varna, Bulgaria
| | - Yoana Kiselova-Kaneva
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Faculty of Pharmacy, Medical University-Varna, Varna, Bulgaria
| | - Desislava Ivanova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Faculty of Pharmacy, Medical University-Varna, Varna, Bulgaria
| | - Milena Pasheva
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Faculty of Pharmacy, Medical University-Varna, Varna, Bulgaria
| | - Deyana Vankova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Faculty of Pharmacy, Medical University-Varna, Varna, Bulgaria
| | - Diana Ivanova
- Department of Biochemistry, Molecular Medicine and Nutrigenomics, Faculty of Pharmacy, Medical University-Varna, Varna, Bulgaria
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Akizawa T, Tanaka-Amino K, Otsuka T, Yamaguchi Y. Factors Affecting Doses of Roxadustat Versus Darbepoetin Alfa for Anemia in Nondialysis Patients. Am J Nephrol 2021; 52:702-713. [PMID: 34628408 DOI: 10.1159/000519043] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 08/14/2021] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Roxadustat is an oral hypoxia-inducible factor prolyl hydroxylase inhibitor for treating anemia of chronic kidney disease (CKD). This post hoc analysis of a Japanese, open-label, partially randomized, phase 3 study in nondialysis-dependent (NDD) CKD patients treated with traditional erythropoiesis-stimulating agents (ESAs) evaluated dosing trends of roxadustat and darbepoetin alfa (DA) required to maintain target hemoglobin concentrations in patients with risk factors associated with ESA hyporesponsiveness. METHODS Patients enrolled in the 1517-CL-0310 study (NCT02988973) that demonstrated noninferiority of roxadustat to DA for change in average hemoglobin levels of week 18-24 from baseline who had used human recombinant erythropoietin or DA before conversion and who were randomized to either roxadustat or DA were included. The endpoints were the average allocated dose of roxadustat and DA per administration in the last 6 weeks (AAD/6W), assessed by subgroups known to be associated with ESA hyporesponsiveness. The analysis of variance was performed by the treatment group to test the influence of subgroup factors on the AAD/6W of study drug. The ratios between the mean AAD/6W in each subgroup category and the within-arm mean AAD/6W were calculated. RESULTS Two hundred and sixty-two patients were randomized to either the roxadustat or DA comparative group and received treatment (roxadustat, n = 131; DA, n = 131). Higher mean (standard deviation) doses of both roxadustat (63.15 [24.84] mg) and DA (47.33 [29.79] μg) were required in the highest ESA resistance index (≥6.8) quartile (p = 0.003 and p < 0.001, respectively). Patients with adequate iron repletion had the lowest doses for both roxadustat (45.54 [18.01] mg) and DA (28.13 [20.98] μg). High-sensitivity C-reactive protein ≥28.57 nmol/L and the estimated glomerular filtration rate <15 mL/min/1.73 m2 were associated with requiring higher DA but not roxadustat doses. DISCUSSION/CONCLUSION The roxadustat dose required to maintain target hemoglobin in NDD patients in Japan with anemia of CKD relative to DA dose may not be impacted by low-grade inflammation. Roxadustat may be beneficial for ESA-hyporesponsive NDD CKD patients.
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Affiliation(s)
| | | | - Tetsuro Otsuka
- Japan-Asia Clinical Development, Astellas Pharma, Inc., Tokyo, Japan
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Kim HY, Lee JM, Lee YS, Li S, Lee SJ, Bae SC, Jung HS. Runx3 regulates iron metabolism via modulation of BMP signalling. Cell Prolif 2021; 54:e13138. [PMID: 34611951 PMCID: PMC8666273 DOI: 10.1111/cpr.13138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 09/13/2021] [Accepted: 09/20/2021] [Indexed: 12/11/2022] Open
Abstract
Objectives Runx3, a member of the Runx family of transcription factors, has been studied as a tumour suppressor and key player of organ development. In a previous study, we reported differentiation failure and excessive angiogenesis in the liver of Runx3 knock‐out (KO) mice. Here, we examined a function of the Runx3 in liver, especially in iron metabolism. Methods We performed histological and immunohistological analyses of the Runx3 KO mouse liver. RNA‐sequencing analyses were performed on primary hepatocytes isolated from Runx3 conditional KO (cKO) mice. The effect of Runx3 knock‐down (KD) was also investigated using siRNA‐mediated KD in functional human hepatocytes and human hepatocellular carcinoma cells. Result We observed an iron‐overloaded liver with decreased expression of hepcidin in Runx3 KO mice. Expression of BMP6, a regulator of hepcidin transcription, and activity of the BMP pathway were decreased in the liver tissue of Runx3 KO mice. Transcriptome analysis on primary hepatocytes isolated from Runx3 cKO mice also revealed that iron‐induced increase in BMP6 was mediated by Runx3. Similar results were observed in Runx3 knock‐down experiments using HepaRG cells and HepG2 cells. Finally, we showed that Runx3 enhanced the activity of the BMP6 promoter by responding to iron stimuli in the hepatocytes. Conclusion In conclusion, we suggest that Runx3 plays important roles in iron metabolism of the liver through regulation of BMP signalling.
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Affiliation(s)
- Hyun-Yi Kim
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 FOUR, Yonsei University College of Dentistry, Seoul, Korea
| | - Jong-Min Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 FOUR, Yonsei University College of Dentistry, Seoul, Korea
| | - You-Soub Lee
- Department of Biochemistry, School of Medicine, and Institute for Tumor Research, Chungbuk National University, Cheongju, Korea
| | - Shujin Li
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 FOUR, Yonsei University College of Dentistry, Seoul, Korea
| | - Seung-Jun Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 FOUR, Yonsei University College of Dentistry, Seoul, Korea
| | - Suk-Chul Bae
- Department of Biochemistry, School of Medicine, and Institute for Tumor Research, Chungbuk National University, Cheongju, Korea
| | - Han-Sung Jung
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 FOUR, Yonsei University College of Dentistry, Seoul, Korea
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Csiky B, Schömig M, Esposito C, Barratt J, Reusch M, Valluri U, Sulowicz W. Roxadustat for the Maintenance Treatment of Anemia in Patients with End-Stage Kidney Disease on Stable Dialysis: A European Phase 3, Randomized, Open-Label, Active-Controlled Study (PYRENEES). Adv Ther 2021; 38:5361-5380. [PMID: 34537926 PMCID: PMC8478768 DOI: 10.1007/s12325-021-01904-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/26/2021] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Roxadustat is an orally administered hypoxia-inducible factor prolyl hydroxylase inhibitor being developed for the treatment of anemia of chronic kidney disease (CKD). This European, phase 3, randomized, open-label, active-controlled study investigated efficacy and safety of roxadustat in patients with end-stage kidney disease on dialysis for at least 4 months. METHODS Patients were randomized to switch from an erythropoiesis-stimulating agent (ESA) (epoetin alfa or darbepoetin alfa) to roxadustat three times/week or to continue their previous ESA. Roxadustat and ESA doses were adjusted to maintain hemoglobin within 10.0-12.0 g/dL during the treatment period (day 1 up to 52-104 weeks). Primary endpoints were hemoglobin change from baseline (CFB) to the average of weeks 28-36 without rescue therapy and hemoglobin CFB to the average of weeks 28-52 regardless of rescue therapy. Treatment-emergent adverse events (TEAEs) were assessed descriptively. RESULTS Of 1081 screened patients, 836 were randomized and received treatment (roxadustat, n = 415; ESA, n = 421). The least squares means (95% CI) of the treatment difference (roxadustat - ESA) for hemoglobin CFB to weeks 28-36 (without rescue therapy) and CFB to weeks 28-52 (regardless of rescue therapy) were 0.235 (0.132, 0.339) g/dL and 0.171 (0.082, 0.261) g/dL, respectively, demonstrating non-inferiority of roxadustat to ESA (non-inferiority margin of - 0.75 g/dL). The proportions of patients who achieved target hemoglobin without rescue therapy during weeks 28-36 were 84.2% (roxadustat) and 82.4% (ESA). Roxadustat was superior to ESA in decreasing LDL cholesterol from baseline to the average of weeks 12-28. Serious TEAEs occurred in 50.7% (roxadustat) and 45.0% (ESA) of patients. Common TEAEs in both treatment groups included hypertension, arteriovenous fistula thrombosis, headache, and diarrhea. CONCLUSION Roxadustat was non-inferior to ESAs in maintaining hemoglobin levels in this cohort of patients with anemia of CKD on dialysis for at least 4 months who were previously treated with ESAs. Observed TEAEs were consistent with previous studies.
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Affiliation(s)
- Botond Csiky
- 2nd Department of Medicine and Nephrology-Diabetes Center, University of Pécs, FMC Dialysis Centers, Pécs, Hungary.
| | | | - Ciro Esposito
- Unit of Nephrology and Dialysis, ICS Maugeri, University of Pavia, Pavia, Italy
| | | | | | | | - Wladyslaw Sulowicz
- Department of Nephrology, Collegium Medicum of the Jagiellonian University, Krakow, Poland
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Laller S, Patel S, Haldar D. Role of Serum and Urinary Hepcidin in Young Females of Reproductive Age in North India. J Lab Physicians 2021; 14:175-182. [PMID: 35982871 PMCID: PMC9381310 DOI: 10.1055/s-0041-1735585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Introduction
Iron deficiency is one of the most common nutritional disorders in the world affecting young females of the reproductive age group. Indeed, an ideal screening test should be capable of identifying iron deficiency long before developing anemia. Henceforth, the present study was aimed to determine utility of hepcidin in iron deficiency and to see its correlation with different iron indices.
Methods
This cross-sectional study was conducted in the Department of Biochemistry, SGT Medical College Hospital and Research Institute, Budhera, Gurugram, Haryana, India. It included 200 nonpregnant female students aged between 18 and 25 years. Estimation of hepcidin was by enzyme-linked immunosorbent assay. Quantitative estimation of serum iron, total iron-binding capacity (TIBC), and transferrin saturation was done via semi-autoanalyzer. Statistical analysis was done using SPSS v22.
Results
The reference range of urinary hepcidin established in this study was 110 to 969 ng/mg creatinine (mean ± standard deviation 328.3 ± 195.07 ng/mg creatinine). Serum hepcidin and urinary hepcidin had a significant correlation with iron indices. Area under the curve of urinary hepcidin was obtained with best combination of diagnostic sensitivity (82.6%) and specificity (83.1%) at a cutoff value of > 15.7 ng/mL and ≤ 199 ng/mg, respectively.
Conclusion
Since ferritin, TIBC, transferrin saturation, and hepcidin each represent different aspects of iron metabolism, incorporating hepcidin in the present diagnostics and combined evaluation of these indices may accord enhanced clinical information. Hepcidin would help to stratify the vulnerable young healthy female population in early stages of iron deficiency and guide proper interventions to reduce morbidity.
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Affiliation(s)
- Shaveta Laller
- Department of Biochemistry, SGT Medical College and Hospital, Gurugram, Haryana, India
| | - Seema Patel
- Department of Biochemistry, ESIC Medical College, Faridabad, Haryana, India
| | - Deepa Haldar
- Department of Biochemistry, Academic Block, Vardhman Mahavir Medical College (VMMC and SJH), Ansari Nagar, New Delhi, India
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Knatko EV, Castro C, Higgins M, Zhang Y, Honda T, Henderson CJ, Wolf CR, Griffin JL, Dinkova-Kostova AT. Nrf2 activation does not affect adenoma development in a mouse model of colorectal cancer. Commun Biol 2021; 4:1081. [PMID: 34526660 PMCID: PMC8443638 DOI: 10.1038/s42003-021-02552-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 08/13/2021] [Indexed: 11/23/2022] Open
Abstract
Transcription factor nuclear factor erythroid 2 p45-related factor 2 (Nrf2) and its main negative regulator, Kelch-like ECH associated protein 1 (Keap1), are at the interface between redox and intermediary metabolism. Nrf2 activation is protective in models of human disease and has benefits in clinical trials. Consequently, the Keap1/Nrf2 protein complex is a drug target. However, in cancer Nrf2 plays a dual role, raising concerns that Nrf2 activators may promote growth of early neoplasms. To address this concern, we examined the role of Nrf2 in development of colorectal adenomas by employing genetic, pharmacological, and metabolomic approaches. We found that colorectal adenomas that form in Gstp-/-: ApcMin/+ mice are characterized by altered one-carbon metabolism and that genetic activation, but not disruption of Nrf2, enhances these metabolic alterations. However, this enhancement is modest compared to the magnitude of metabolic differences between tumor and peri-tumoral tissues, suggesting that the metabolic changes conferred by Nrf2 activation may have little contribution to the early stages of carcinogenesis. Indeed, neither genetic (by Keap1 knockdown) nor pharmacological Nrf2 activation, nor its disruption, affected colorectal adenoma formation in this model. We conclude that pharmacological Nrf2 activation is unlikely to impact the early stages of development of colorectal cancer.
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Affiliation(s)
- Elena V Knatko
- Jacqui Wood Cancer Centre, Division of Cellular Medicine, School of Medicine, University of Dundee, Dundee, Scotland, UK
| | - Cecilia Castro
- Department of Biochemistry and the Cambridge Systems Biology Centre, University of Cambridge, Cambridge, UK
| | - Maureen Higgins
- Jacqui Wood Cancer Centre, Division of Cellular Medicine, School of Medicine, University of Dundee, Dundee, Scotland, UK
| | - Ying Zhang
- Jacqui Wood Cancer Centre, Division of Cellular Medicine, School of Medicine, University of Dundee, Dundee, Scotland, UK
| | - Tadashi Honda
- Department of Chemistry and Institute of Chemical Biology & Drug Discovery, Stony Brook University, Stony Brook, NY, USA
| | - Colin J Henderson
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, Scotland, UK
| | - C Roland Wolf
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, Scotland, UK
| | - Julian L Griffin
- Department of Biochemistry and the Cambridge Systems Biology Centre, University of Cambridge, Cambridge, UK
- Section of Biomolecular Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Albena T Dinkova-Kostova
- Jacqui Wood Cancer Centre, Division of Cellular Medicine, School of Medicine, University of Dundee, Dundee, Scotland, UK.
- Department of Pharmacology and Molecular Sciences and Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Sun Q, Wang J, Wang G, Wang H, Liu H. Integrated analysis of lncRNA and mRNA in liver of Megalobrama amblycephala post Aeromonas hydrophila infection. BMC Genomics 2021; 22:653. [PMID: 34511071 PMCID: PMC8435129 DOI: 10.1186/s12864-021-07969-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 08/28/2021] [Indexed: 01/01/2023] Open
Abstract
Background As non-coding RNA molecules of more than 200 bp in length, long non-coding RNAs (lncRNAs) play a variety of roles in biological processes, including regulating the immune responses to bacterial infections. In recent years, there have been many in-depth studies on mammalian lncRNAs, but the relevant studies in fish are very limited. Meanwhile, since lncRNAs are not conserved among species, it is difficult to apply the existing results directly to unstudied species. Results To obtain the information of lncRNAs in Megalobrama amblycephala, one of the most economically important freshwater fish in China, also to better understand the biological significance of lncRNAs in the immunity system, the fish liver at 0, 4, 12, 24, and 72 h post Aeromonas hydrophila infection (hpi) were obtained for lncRNA-sequencing (lncRNA-seq). A total of 14,849 lncRNAs were identified, and 2196 lncRNAs showed significant differences at different time points post A. hydrophila infection. Gene Ontology (GO) annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses showed that the target genes of the differentially expressed lncRNAs were enriched in several pathways related to immune such as apoptosis, inflammation, and immune response. Time-specific modules were then identified, using weighted correlation network analysis (WGCNA), and 28 modules significantly correlated with different time point after infection were found. Furthermore, four immune-related genes and six lncRNAs in the time-specific modules were subsequently verified by RT-qPCR. Conclusions The above findings reveal the discovery of widespread differentially expressed lncRNAs in the M. amblycephala liver post A. hydrophila infection, suggesting that lncRNAs might participate in the regulation of host response to bacterial infection, enriching the information of lncRNAs in teleost and providing a resources basis for further studies on the immune function of lncRNAs. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07969-5.
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Affiliation(s)
- Qianhui Sun
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair / Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Jixiu Wang
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair / Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Guowen Wang
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair / Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Huanling Wang
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair / Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Hong Liu
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair / Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China. .,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China.
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Biodegradable Zinc Oxide Nanoparticles Doped with Iron as Carriers of Exogenous Iron in the Living Organism. Pharmaceuticals (Basel) 2021; 14:ph14090859. [PMID: 34577559 PMCID: PMC8472157 DOI: 10.3390/ph14090859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/16/2021] [Accepted: 08/21/2021] [Indexed: 01/14/2023] Open
Abstract
Iron plays an important role in various crucial processes in the body and its deficiency is considered currently as a serious health problem. Thus, iron supplementation strategies for both humans and animals need to be effective and safe. According to our previous studies, zinc-based nanoparticles provide safe, biodegradable, fast and efficient transport system of orally given substances to the tissues. In the current manuscript we present results of a study aimed at investigation of the ZnO nanoparticle-based Fe supplementation system (average size 100 × 250 nm). Nanostructures were orally (gavage) administered to adult mice. Animals were sacrificed at different time points with collection of blood and internal organs for analyses (tissue iron concentration, hepatic level of hepcidin, blood parameters, liver and spleen levels of ferritin, histopathology). Initial experiment was performed to compare the biological effect of doping type (Fe3+ doping vs. a mixture of Fe3+ and Fe2+). Then, the effect of acute/chronic exposure models was determined. The increase in ferritin, along with improved, crucial hematological parameters and lack of the influence on hepcidin expression indicated the chronic application of Fe3+,2+ doped ZnO nanostructures to be the most effective among tested.
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Petrillo S, Manco M, Altruda F, Fagoonee S, Tolosano E. Liver Sinusoidal Endothelial Cells at the Crossroad of Iron Overload and Liver Fibrosis. Antioxid Redox Signal 2021; 35:474-486. [PMID: 32689808 DOI: 10.1089/ars.2020.8168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Significance: Liver fibrosis results from different etiologies and represents one of the most serious health issues worldwide. Fibrosis is the outcome of chronic insults on the liver and is associated with several factors, including abnormal iron metabolism. Recent Advances: Multiple mechanisms underlying the profibrogenic role of iron have been proposed. The pivotal role of liver sinusoidal endothelial cells (LSECs) in iron-level regulation, as well as their morphological and molecular dedifferentiation occurring in liver fibrosis, has encouraged research on LSECs as prime regulators of very early fibrotic events. Importantly, normal differentiated LSECs may act as gatekeepers of fibrogenesis by maintaining the quiescence of hepatic stellate cells, while LSECs capillarization precedes the onset of liver fibrosis. Critical Issues: In the present review, the morphological and molecular alterations occurring in LSECs after liver injury are addressed in an attempt to highlight how vascular dysfunction promotes fibrogenesis. In particular, we discuss in depth how a vicious loop can be established in which iron dysregulation and LSEC dedifferentiation synergize to exacerbate and promote the progression of liver fibrosis. Future Directions: LSECs, due to their pivotal role in early liver fibrosis and iron homeostasis, show great promises as a therapeutic target. In particular, new strategies can be devised for restoring LSECs differentiation and thus their role as regulators of iron homeostasis, hence preventing the progression of liver fibrosis or, even better, promoting its regression. Antioxid. Redox Signal. 35, 474-486.
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Affiliation(s)
- Sara Petrillo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Marta Manco
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging, CNR c/o Molecular Biotechnology Center, Torino, Italy
| | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
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Exercise and Heat Stress: Inflammation and the Iron Regulatory Response. Int J Sport Nutr Exerc Metab 2021; 31:460-465. [PMID: 34326269 DOI: 10.1123/ijsnem.2021-0080] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/14/2021] [Accepted: 06/20/2021] [Indexed: 11/18/2022]
Abstract
This study determined the impact of heat stress on postexercise inflammation and hepcidin levels. Twelve moderately trained males completed three, 60-min treadmill running sessions under different conditions: (a) COOL, 18 °C with speed maintained at 80% maximum heart rate; (b) HOTHR, 35 °C with speed maintained at 80% maximum heart rate; and (c) HOTPACE, 35 °C completed at the average running speed from the COOL trial. Venous blood samples were collected pre-, post-, and 3-hr postexercise and analyzed for serum ferritin, interleukin-6 (IL-6), and hepcidin concentrations. Average HR was highest during HOTPACE compared with HOTHR and COOL (p < .001). Running speed was slowest in HOTHR compared with COOL and HOTPACE (p < .001). The postexercise increase in IL-6 was greatest during HOTPACE (295%; p = .003). No differences in the IL-6 response immediately postexercise between COOL (115%) and HOTHR (116%) were evident (p = .992). No differences in hepcidin concentrations between the three trials were evident at 3 hr postexercise (p = .407). Findings from this study suggest the IL-6 response to exercise is greatest in hot compared with cool conditions when the absolute running speed was matched. No differences in IL-6 between hot and cool conditions were evident when HR was matched, suggesting the increased physiological strain induced from training at higher intensities in hot environments, rather than the heat per se, is likely responsible for this elevated response. Environmental temperature had no impact on hepcidin levels, indicating that exercising in hot conditions is unlikely to further impact transient alterations in iron regulation, beyond that expected in temperate conditions.
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Kling PJ. Ironing Out the Details of Maternal-Fetal Iron Trafficking: New Tools in the Toolbox. J Nutr 2021; 151:2509-2510. [PMID: 34320201 PMCID: PMC8417915 DOI: 10.1093/jn/nxab247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Charytan C, Manllo-Karim R, Martin ER, Steer D, Bernardo M, Dua SL, Moustafa MA, Saha G, Bradley C, Eyassu M, Leong R, Saikali KG, Liu C, Szczech L, Yu KHP. A Randomized Trial of Roxadustat in Anemia of Kidney Failure: SIERRAS Study. Kidney Int Rep 2021; 6:1829-1839. [PMID: 34307977 PMCID: PMC8258588 DOI: 10.1016/j.ekir.2021.04.007] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/31/2021] [Accepted: 04/05/2021] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION Erythropoiesis-stimulating agents, standard of care for anemia of end-stage kidney disease, are associated with cardiovascular events. We evaluated the efficacy and safety of roxadustat, an oral hypoxia-inducible factor prolyl hydroxylase inhibitor that stimulates erythropoiesis. METHODS SIERRAS was a phase 3, randomized, open-label, active-controlled study enrolled adults on dialysis for end-stage kidney disease receiving erythropoiesis-stimulating agents for anemia. Patients were randomized (1:1) to thrice-weekly roxadustat or epoetin alfa. Doses were based on previous epoetin alfa dose and adjusted in the roxadustat arm to maintain hemoglobin at ∼11 g/dl during treatment. Epoetin alfa dosing was adjusted per US package insert. Primary efficacy endpoint was mean hemoglobin (g/dl) change from baseline averaged over weeks 28 to 52. Treatment-emergent adverse events were monitored. RESULTS Enrolled patients (roxadustat, n = 370 and epoetin alfa, n = 371) had similar mean (SD) baseline hemoglobin levels (10.30 [0.66] g/dl). Mean (SD) hemoglobin changes for weeks 28 to 52 were 0.39 (0.93) and -0.09 (0.84) in roxadustat and epoetin alfa, respectively. Roxadustat was noninferior (least squares mean difference: 0.48 [95% confidence interval: 0.37, 0.59]; P < 0.001) to epoetin alfa. Tolerability was comparable between treatments. CONCLUSION In end-stage kidney disease, roxadustat was noninferior to epoetin alfa in up to 52 weeks of treatment in this erythropoietin-stimulating agent conversion study. Roxadustat had an acceptable tolerability profile.
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Affiliation(s)
| | | | | | - Dylan Steer
- Balboa Nephrology Medical Group, La Jolla, California, USA
| | | | - Sohan L. Dua
- Valley Renal Medical Group, Northridge, California, USA
| | - Moustafa A. Moustafa
- South Carolina Nephrology & Hypertension Center, Inc., Orangeburg, South Carolina, USA
| | - Gopal Saha
- FibroGen, Inc., San Francisco, California, USA
| | | | | | | | | | - Cameron Liu
- FibroGen, Inc., San Francisco, California, USA
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Ledesma-Colunga MG, Weidner H, Vujic Spasic M, Hofbauer LC, Baschant U, Rauner M. Shaping the bone through iron and iron-related proteins. Semin Hematol 2021; 58:188-200. [PMID: 34389111 DOI: 10.1053/j.seminhematol.2021.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/18/2021] [Accepted: 06/08/2021] [Indexed: 01/04/2023]
Abstract
Well-controlled iron levels are indispensable for health. Iron deficiency is the most common cause of anemia, whereas iron overload, either hereditary or secondary due to disorders of ineffective erythropoiesis, causes widespread organ failure. Bone is particularly sensitive to fluctuations in systemic iron levels as both iron deficiency and overload are associated with low bone mineral density and fragility. Recent studies have shown that not only iron itself, but also iron-regulatory proteins that are mutated in hereditary hemochromatosis can control bone mass. This review will summarize the current knowledge on the effects of iron on bone homeostasis and bone cell activities, and on the role of proteins that regulate iron homeostasis, i.e. hemochromatosis proteins and proteins of the bone morphogenetic protein pathway, on bone remodeling. As disorders of iron homeostasis are closely linked to bone fragility, deeper insights into common regulatory mechanisms may provide new opportunities to concurrently treat disorders affecting iron homeostasis and bone.
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Affiliation(s)
- Maria G Ledesma-Colunga
- Divisions of Endocrinology and Molecular Bone Biology, Department of Medicine III & University Center for Healty Aging, Technische Universität Dresden, Dresden, Germany
| | - Heike Weidner
- Divisions of Endocrinology and Molecular Bone Biology, Department of Medicine III & University Center for Healty Aging, Technische Universität Dresden, Dresden, Germany
| | - Maja Vujic Spasic
- Institute of Comparative Molecular Endocrinology, Ulm University, Ulm, Germany
| | - Lorenz C Hofbauer
- Divisions of Endocrinology and Molecular Bone Biology, Department of Medicine III & University Center for Healty Aging, Technische Universität Dresden, Dresden, Germany
| | - Ulrike Baschant
- Divisions of Endocrinology and Molecular Bone Biology, Department of Medicine III & University Center for Healty Aging, Technische Universität Dresden, Dresden, Germany
| | - Martina Rauner
- Divisions of Endocrinology and Molecular Bone Biology, Department of Medicine III & University Center for Healty Aging, Technische Universität Dresden, Dresden, Germany.
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Madeddu C, Neri M, Sanna E, Oppi S, Macciò A. Experimental Drugs for Chemotherapy- and Cancer-Related Anemia. J Exp Pharmacol 2021; 13:593-611. [PMID: 34194245 PMCID: PMC8238072 DOI: 10.2147/jep.s262349] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 04/21/2021] [Indexed: 01/03/2023] Open
Abstract
Anemia in cancer patients is a relevant condition complicating the course of the neoplastic disease. Overall, we distinguish the anemia which arises under chemotherapy as pure adverse event of the toxic effects of the drugs used, and the anemia induced by the tumour-associated inflammation, oxidative stress, and systemic metabolic changes, which can be worsened by the concomitant anticancer treatments. This more properly cancer-related anemia depends on several overlapping mechanism, including impaired erythropoiesis and functional iron deficiency, which make its treatment more difficult. Standard therapies approved and recommended for cancer anemia, as erythropoiesis-stimulating agents and intravenous iron administration, are limited to the treatment of chemotherapy-induced anemia, preferably in patients with advanced disease, in view of the still unclear effect of erythropoiesis-stimulating agents on tumour progression and survival. Outside the use of chemotherapy, there are no recommendations for the treatment of cancer-related anemia. For a more complete approach, it is fundamentally a careful evaluation of the type of anemia and iron homeostasis, markers of inflammation and changes in energy metabolism. In this way, anemia management in cancer patient would permit a tailored approach that could give major benefits. Experimental drugs targeting hepcidin and activin II receptor pathways are raising great expectations, and future clinical trials will confirm their role as remedies for cancer-related anemia. Recent evidence on the effect of integrated managements, including nutritional support, antioxidants and anti-inflammatory substances, for the treatment of cancer anemia are emerging. In this review article, we show standard, innovative, and experimental treatment used as remedy for anemia in cancer patients.
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Affiliation(s)
- Clelia Madeddu
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Manuela Neri
- Department of Gynecologic Oncology, A. Businco Hospital, ARNAS G. Brotzu, Cagliari, Italy
| | - Elisabetta Sanna
- Department of Gynecologic Oncology, A. Businco Hospital, ARNAS G. Brotzu, Cagliari, Italy
| | - Sara Oppi
- Hematology and Transplant Center, A. Businco Hospital, ARNAS G. Brotzu, Cagliari, Italy
| | - Antonio Macciò
- Department of Gynecologic Oncology, A. Businco Hospital, ARNAS G. Brotzu, Cagliari, Italy
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Kawai Y, Toya Y, Wakui H, Fujikawa T, Ueda E, Azushima K, Kinguchi S, Mitsuhashi H, Kawano T, Kuji T, Yamaguchi S, Ohnishi T, Tamura K. Potential effective treatment of shortening continuous erythropoietin receptor activator treatment interval combined with iron supplementation in hemodialysis patients. J Pharmacol Sci 2021; 147:118-125. [PMID: 34294362 DOI: 10.1016/j.jphs.2021.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/28/2021] [Accepted: 05/19/2021] [Indexed: 11/29/2022] Open
Abstract
Our previous randomized controlled trial comparing the total dose of weekly versus biweekly continuous erythropoietin receptor activator (CERA) therapy to maintain optimal hemoglobin (Hb) levels showed no significant differences between the two therapies. This post-hoc analysis assessed whether the total dose of weekly versus biweekly CERA therapy to maintain Hb levels among HD patients differed among groups with or without iron supplementation. Of 107 patients, 40 received intravenous iron supplementation due to iron deficiency (iron group) and 67 did not (non-iron group). In the iron group, the weekly therapy tended to require a lower total CERA dose compared with the biweekly therapy (274 ± 274 vs 381 ± 223 μg/12 weeks, P = 0.051). Changes in circulating hepcidin levels, a negative regulator of intestinal iron uptake, after 2 weeks of CERA treatment were significantly lower in the weekly therapy compared with the biweekly therapy (-4.2 ± 6.3 vs 11.1 ± 7.3 ng/mL, P = 0.015). In the non-iron group, there were no significant differences in total CERA dose or changes in hepcidin levels between the two therapies. Shortening the CERA treatment interval combined with iron supplementation may lead to the more efficient treatment of HD patients with iron deficiency.
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Affiliation(s)
- Yuki Kawai
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Yoshiyuki Toya
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Hiromichi Wakui
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.
| | - Tetsuya Fujikawa
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan; Center for Health Service Sciences, Yokohama National University, 79-8 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan
| | - Eiko Ueda
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Kengo Azushima
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Sho Kinguchi
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Hiroshi Mitsuhashi
- Kohsaikai Kamioooka Jinsei Clinic, 1-10-1 Kamioookanishi, Konan-ku, Yokohama, 233-0002, Japan
| | - Tomoyuki Kawano
- Kohsaikai Bunkojin Clinic, 356-3 Yatsucho, Kanazawa-ku, Yokohama, 236-0016, Japan
| | - Tadashi Kuji
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan; Yokodai Central Clinic, 3-9-31 Yokodai, Isogo-ku, Yokohama, 235-0045, Japan
| | - Satoshi Yamaguchi
- Kohsaikai Yokohama Jinsei Hospital, 3-1-28 Konan, Konan-ku, Yokohama, 233-0003, Japan
| | - Toshimasa Ohnishi
- Kohsaikai Kamioooka Jinsei Clinic, 1-10-1 Kamioookanishi, Konan-ku, Yokohama, 233-0002, Japan
| | - Kouichi Tamura
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
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Guo HH, Xiong L, Pan JX, Lee D, Liu K, Ren X, Wang B, Yang X, Cui S, Mei L, Xiong WC. Hepcidin contributes to Swedish mutant APP-induced osteoclastogenesis and trabecular bone loss. Bone Res 2021; 9:31. [PMID: 34108442 PMCID: PMC8190093 DOI: 10.1038/s41413-021-00146-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 12/17/2020] [Accepted: 01/05/2021] [Indexed: 02/08/2023] Open
Abstract
Patients with Alzheimer's disease (AD) often have lower bone mass than healthy individuals. However, the mechanisms underlying this change remain elusive. Previously, we found that Tg2576 mice, an AD animal model that ubiquitously expresses Swedish mutant amyloid precursor protein (APPswe), shows osteoporotic changes, reduced bone formation, and increased bone resorption. To understand how bone deficits develop in Tg2576 mice, we used a multiplex antibody array to screen for serum proteins that are altered in Tg2576 mice and identified hepcidin, a master regulator of iron homeostasis. We further investigated hepcidin's function in bone homeostasis and found that hepcidin levels were increased not only in the serum but also in the liver, muscle, and osteoblast (OB) lineage cells in Tg2576 mice at both the mRNA and protein levels. We then generated mice selectively expressing hepcidin in hepatocytes or OB lineage cells, which showed trabecular bone loss and increased osteoclast (OC)-mediated bone resorption. Further cell studies suggested that hepcidin increased OC precursor proliferation and differentiation by downregulating ferroportin (FPN) expression and increasing intracellular iron levels. In OB lineage cells, APPswe enhanced hepcidin expression by inducing ER stress and increasing OC formation, in part through hepcidin. Together, these results suggest that increased hepcidin expression in hepatocytes and OB lineage cells in Tg2576 mice contributes to enhanced osteoclastogenesis and trabecular bone loss, identifying the hepcidin-FPN-iron axis as a potential therapeutic target to prevent AD-associated bone loss.
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Affiliation(s)
- Hao-Han Guo
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Lei Xiong
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH, USA
| | - Jin-Xiu Pan
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH, USA
| | - Daehoon Lee
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Kevin Liu
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH, USA
| | - Xiao Ren
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Bo Wang
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Xiao Yang
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Shun Cui
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Lin Mei
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH, USA
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Wen-Cheng Xiong
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA.
- Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH, USA.
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA.
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Delaney KM, Guillet R, Pressman EK, Ganz T, Nemeth E, O'Brien KO. Umbilical Cord Erythroferrone Is Inversely Associated with Hepcidin, but Does Not Capture the Most Variability in Iron Status of Neonates Born to Teens Carrying Singletons and Women Carrying Multiples. J Nutr 2021; 151:2590-2600. [PMID: 34236433 PMCID: PMC8417932 DOI: 10.1093/jn/nxab156] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/22/2021] [Accepted: 04/28/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The developing fetus requires adequate iron and produces its own hormones to regulate this process. Erythroferrone (ERFE) is a recently identified iron regulatory hormone, and normative data on ERFE concentrations and relations between iron status and other iron regulatory hormones at birth are needed. OBJECTIVES The objective of this study was to characterize cord ERFE concentrations at birth and assess interrelations between ERFE, iron regulatory hormones, and iron status biomarkers in 2 cohorts of newborns at higher risk of neonatal anemia. METHODS Umbilical cord ERFE concentrations were measured in extant serum samples collected from neonates born to women carrying multiples (age: 21-43 y; n = 127) or teens (age: 14-19 y; n = 164). Relations between cord blood ERFE and other markers of iron status or erythropoiesis in cord blood were assessed by linear regression and mediation analysis. RESULTS Cord ERFE was detectable in all newborns delivered between 30 and 42 weeks of gestation, and mean concentration at birth was 0.73 ng/mL (95% CI: 0.63, 0.85 ng/mL). Cord ERFE was on average 0.25 ng/mL lower in newborns of black as opposed to white ancestry (P = 0.04). Cord ERFE was significantly associated with transferrin receptor (β: 1.17, P < 0.001), ferritin (β: -0.27, P < 0.01), and hemoglobin (Hb) (β: 0.04, P < 0.05). However, cord hepcidin and the hepcidin:erythropoietin (EPO) ratio captured the most variance in newborn iron and hematologic status (>25% of variance explained). CONCLUSIONS Neonates born to teens and women carrying multiples were able to produce ERFE in response to neonatal cord iron status and erythropoietic demand. ERFE, however, did not capture significant variance in newborn iron or Hb concentrations. In these newborns, cord hepcidin and the hepcidin:EPO ratio explained the most variance in iron status indicators at birth.
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Affiliation(s)
| | - Ronnie Guillet
- Division of Neonatology, Department of Pediatrics, University of Rochester
School of Medicine, Rochester, NY, USA
| | - Eva K Pressman
- Department of Obstetrics and Gynecology, University of Rochester School of
Medicine, Rochester, NY, USA
| | - Tomas Ganz
- Center for Iron Disorders, David Geffen School of Medicine, University of
California Los Angeles, Los Angeles, CA, USA
| | - Elizabeta Nemeth
- Center for Iron Disorders, David Geffen School of Medicine, University of
California Los Angeles, Los Angeles, CA, USA
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Delaney KM, Guillet R, Pressman EK, Ganz T, Nemeth E, O'Brien KO. Serum Erythroferrone During Pregnancy Is Related to Erythropoietin but Does Not Predict the Risk of Anemia. J Nutr 2021; 151:1824-1833. [PMID: 33982118 PMCID: PMC8245876 DOI: 10.1093/jn/nxab093] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/12/2021] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Maintaining adequate iron status during pregnancy is important for the mother and her developing fetus. Iron homeostasis is influenced by 3 regulatory hormones: erythropoietin (EPO), hepcidin, and erythroferrone (ERFE). To date, normative data on ERFE across pregnancy and its relations to other hormones and iron status indicators are limited. OBJECTIVES The objective of this study was to characterize maternal ERFE across pregnancy and at delivery and evaluate the utility of hepcidin, ERFE, and EPO in identifying women with increased iron needs. METHODS ERFE was measured in extant serum samples collected from 2 longitudinal cohorts composed of women carrying multiple fetuses (n = 79) and pregnant adolescents (n = 218) at midgestation (∼26 wk) and delivery (∼39 wk). Receiver operating characteristic curves were generated to characterize the predictive ability of serum ERFE, hepcidin, and EPO and their ratios to identify women at increased risk of iron deficiency and anemia. RESULTS In these pregnant women, mean ERFE was 0.48 ng/mL at both ∼25 wk of gestation and at delivery. ERFE was positively associated with EPO at midgestation (β = 0.14, P = 0.002, n = 202) and delivery (β = 0.12, P < 0.001, n = 225) but was not significantly associated with maternal hepcidin at any time point surveyed. Of all hormones measured at midgestation and delivery, EPO was best able to identify women with anemia (AUC: 0.86 and 0.75, respectively) and depleted iron stores (AUC: 0.77 and 0.84), whereas the hepcidin-to-EPO ratio was best able to identify women with iron deficiency anemia (AUC: 0.85 and 0.84). CONCLUSIONS Maternal ERFE was significantly associated with EPO but was not able to identify women with gestational iron deficiency. At term, the hepcidin-to-EPO ratio, an index that accounts for both iron status and erythropoietic demand, and EPO were the strongest indicators of maternal iron deficiency and anemia. This trial was registered at clinicaltrials.gov as NCT04517734 (https://clinicaltrials.gov/ct2/show/NCT04517734).
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Affiliation(s)
| | - Ronnie Guillet
- Department of Pediatrics, Division of Neonatology, University of Rochester School of Medicine, Rochester, NY, USA
| | - Eva K Pressman
- Department of Obstetrics and Gynecology, University of Rochester School of Medicine, Rochester, NY, USA
| | - Tomas Ganz
- Center for Iron Disorders, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Elizabeta Nemeth
- Center for Iron Disorders, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
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Hu L, Wu C. In silico analysis suggests disruption of interactions between HAMP from hepatocytes and SLC40A1 from macrophages in hepatocellular carcinoma. BMC Med Genomics 2021; 14:128. [PMID: 34001107 PMCID: PMC8130390 DOI: 10.1186/s12920-021-00977-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 05/06/2021] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Identification of factors associated with proliferation in the hepatocellular carcinoma (HCC) microenvironment aids in understanding the mechanisms of disease progression and provides druggable targets. Gene expression profiles of individual cells in HCC and para-carcinoma tissues can be effectively obtained using the single-cell RNA sequencing (scRNA-Seq) technique. Here, we aimed to identify proliferative hepatocytes from HCC and para-carcinoma tissues, detect differentially expressed genes between the two types of proliferative hepatocytes, and investigate their potential roles in aberrant proliferation. RESULTS Two respective gene signatures for proliferative cells and hepatocytes were established and used to identify proliferative hepatocytes from HCC and para-carcinoma tissues based on scRNA-Seq data. Gene expression profiles between the two types of proliferative hepatocytes were compared. Overall, 40 genes were upregulated in proliferative hepatocytes from para-carcinoma tissue, whereas no upregulated genes were detected in those from HCC tissue. Twelve of the genes, including HAMP, were specifically expressed in the liver tissue. Based on previous reports, we found that HAMP modulates cell proliferation through interaction with its receptor SLC40A1. Comprehensive analysis of cells in HCC and para-carcinoma tissues revealed that: (1) HAMP is specifically expressed in hepatocytes and significantly downregulated in malignant hepatocytes; (2) a subset of macrophages expressing SLC40A1 and genes reacting to various infections is present in para-carcinoma but not in HCC tissue. We independently validated the findings with scRNA-Seq and large-scale tissue bulk RNA-Seq/microarray analyses. CONCLUSION HAMP was significantly downregulated in malignant hepatocytes. In addition, a subset of macrophages expressing SLC40A1 and genes reacting to various infections was absent in HCC tissue. These findings support the involvement of HAMP-SLC40A1 signaling in aberrant hepatocyte proliferation in the HCC microenvironment. The collective data from our in silico analysis provide novel insights into the mechanisms underlying HCC progression and require further validation with wet laboratory experiments.
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Affiliation(s)
- Liang Hu
- Department of Thyroid Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chao Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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Rapid removal of phagosomal ferroportin in macrophages contributes to nutritional immunity. Blood Adv 2021; 5:459-474. [PMID: 33496744 DOI: 10.1182/bloodadvances.2020002833] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 12/16/2020] [Indexed: 12/21/2022] Open
Abstract
Nutrient sequestration is an essential facet of host innate immunity. Macrophages play a critical role in controlling iron availability through expression of the iron transport protein ferroportin (FPN), which extrudes iron from the cytoplasm to the extracellular milieu. During phagocytosis, the limiting phagosomal membrane, which derives from the plasmalemma, can be decorated with FPN and, if functional, will move iron from the cytosol into the phagosome lumen. This serves to feed iron to phagocytosed microbes and would be counterproductive to the many other known host mechanisms working to starve microbes of this essential metal. To understand how FPN is regulated during phagocytosis, we expressed FPN as a green fluorescent protein-fusion protein in macrophages and monitored its localization during uptake of various phagocytic targets, including Staphylococcus aureus, Salmonella enterica serovar Typhimurium, human erythrocytes, and immunoglobulin G opsonized latex beads. We find that FPN is rapidly removed, independently of Vps34 and PI(3)P, from early phagosomes and does not follow recycling pathways that regulate transferrin receptor recycling. Live-cell video microscopy showed that FPN movement on the phagosome is dynamic, with punctate and tubular structures forming before FPN is trafficked back to the plasmalemma. N-ethylmaleimide-sensitive factor, which disrupts soluble NSF attachment protein receptor (SNARE)-mediated membrane fusion and trafficking, prevented FPN removal from the phagosome. Our data support the hypothesis that removal of FPN from the limiting phagosomal membrane will, at the cellular level, ensure that iron cannot be pumped into phagosomes. We propose this as yet another mechanism of host nutritional immunity to subvert microbial growth.
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Abstract
Excessive gut luminal iron contributes to the initiation and progression of colorectal cancer. However, emerging evidence suggests that reduced iron intake and low systemic iron levels are also associated with the pathogenesis of colorectal cancer. This is important because patients with colorectal cancer often present with iron deficiency. Iron is necessary for appropriate immunological functions; hence, iron deficiency may hinder cancer immunosurveillance and potentially modify the tumor immune microenvironment, both of which may assist cancer development. This is supported by studies showing that patients with colorectal cancer with iron deficiency have inferior outcomes and reduced response to therapy. Here, we provide an overview of the immunological consequences of iron deficiency and suggest ensuring adequate iron therapy to limit these outcomes.
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Affiliation(s)
- Oliver Phipps
- O. Phipps, M.J. Brookes, and H.O. Al-Hassi are with the Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom
| | - Matthew J Brookes
- O. Phipps, M.J. Brookes, and H.O. Al-Hassi are with the Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom.,Royal Wolverhampton Hospitals NHS Trust, Gastroenterology Unit Wolverhampton, Wolverhampton, United Kingdom
| | - Hafid O Al-Hassi
- O. Phipps, M.J. Brookes, and H.O. Al-Hassi are with the Research Institute in Healthcare Science, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom
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Wawer AA, Hodyl NA, Fairweather-Tait S, Froessler B. Are Pregnant Women Who Are Living with Overweight or Obesity at Greater Risk of Developing Iron Deficiency/Anaemia? Nutrients 2021; 13:1572. [PMID: 34067098 PMCID: PMC8151407 DOI: 10.3390/nu13051572] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 12/14/2022] Open
Abstract
Low-grade inflammation is often present in people living with obesity. Inflammation can impact iron uptake and metabolism through elevation of hepcidin levels. Obesity is a major public health issue globally, with pregnant women often affected by the condition. Maternal obesity is associated with increased pregnancy risks including iron deficiency (ID) and iron-deficiency anaemia (IDA)-conditions already highly prevalent in pregnant women and their newborns. This comprehensive review assesses whether the inflammatory state induced by obesity could contribute to an increased incidence of ID/IDA in pregnant women and their children. We discuss the challenges in accurate measurement of iron status in the presence of inflammation, and available iron repletion strategies and their effectiveness in pregnant women living with obesity. We suggest that pre-pregnancy obesity and overweight/obese pregnancies carry a greater risk of ID/IDA for the mother during pregnancy and postpartum period, as well as for the baby. We propose iron status and weight gain during pregnancy should be monitored more closely in women who are living with overweight or obesity.
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Affiliation(s)
- Anna A. Wawer
- Department of Anaesthesia, Lyell McEwin Hospital, Elizabeth Vale, SA 5112, Australia;
- Faculty of Health and Medical Sciences, Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Nicolette A. Hodyl
- Faculty of Health and Medical Sciences, Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Susan Fairweather-Tait
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK;
| | - Bernd Froessler
- Department of Anaesthesia, Lyell McEwin Hospital, Elizabeth Vale, SA 5112, Australia;
- Discipline of Acute Care Medicine, Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia
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135
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Dong Z, Li L, Zhang Y, Guo L, Wu X, Yin Y, Wan D. Effects of circadian iron administration on iron bioavailability and biological rhythm in pigs. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:2712-2717. [PMID: 33124038 DOI: 10.1002/jsfa.10897] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/15/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Iron supplements are limited by their poor absorption and low efficacy. A circadian feeding schedule would affect the circadian rhythm and improve nutrient metabolism. In this study, 18 iron-deficient piglets were randomly assigned to three groups: a control group receiving a constant diet with mid-iron (MI), a 'HL' group receiving a high-iron (HI) diet at 8:00 h and a low-iron (LI) diet at 18:00, and an 'LH' group receiving a LI diet at 8:00 and a HI diet at 18:00. The effects of circadian iron administration on iron absorption, iron status, and biological rhythm in iron-deficient piglets were investigated. RESULTS Serum iron and hemoglobin improved significantly (P < 0.05) but did not significantly differ in the circadian iron-feeding groups (P > 0.05). Iron concentration in the liver and spleen was significantly higher in the LH group than in the HL group (P < 0.05), and mRNA expression of divalent metal transport 1 (DMT1), cytochrome B (CYBRD1) and ferroportin (FPN) genes in the duodenum was significantly elevated in the LH group (P < 0.05). The clock-related genes showed differential expression in the duodenum, with greater mRNA expression for period (Per2) and cryptochrome (Cry1 and Cry2) in the LH group (P < 0.05). CONCLUSION Circadian iron administration affected iron absorption and iron storage in pigs. Iron supplementation in the evening might be a more effective pattern for iron utilization. The rhythmic system in the intestine, driven by the time, played an important role in this process. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Zhenglin Dong
- Key Laboratory of Agro-Ecological Processess in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan international joint laboratory of Animal Intestinal Ecology and Health, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Lan Li
- Key Laboratory of Agro-Ecological Processess in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan international joint laboratory of Animal Intestinal Ecology and Health, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yiming Zhang
- Key Laboratory of Agro-Ecological Processess in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan international joint laboratory of Animal Intestinal Ecology and Health, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Liu Guo
- Key Laboratory of Agro-Ecological Processess in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
| | - Xin Wu
- Key Laboratory of Agro-Ecological Processess in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
| | - Yulong Yin
- Key Laboratory of Agro-Ecological Processess in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan international joint laboratory of Animal Intestinal Ecology and Health, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Dan Wan
- Key Laboratory of Agro-Ecological Processess in Subtropical Region, Hunan Research Center of Livestock & Poultry Sciences, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, China
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Gu QQ, He SW, Liu LH, Wang GH, Hao DF, Liu HM, Wang CB, Li C, Zhang M, Li NQ. A teleost bactericidal permeability-increasing protein-derived peptide that possesses a broad antibacterial spectrum and inhibits bacterial infection as well as human colon cancer cells growth. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 118:103995. [PMID: 33412232 DOI: 10.1016/j.dci.2021.103995] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 12/31/2020] [Accepted: 01/01/2021] [Indexed: 06/12/2023]
Abstract
The bactericidal permeability-increasing protein (BPI) is a multifunctional cationic protein produced by neutrophils with antibacterial, antitumor, and LPS-neutralizing properties. In teleost, a number of BPIs have been reported, but their functions are very limited. In this study, an N-terminal peptide, BO18 (with 18 amino acids), derived from rock bream (Oplegnathus fasciatus) BPI, was synthesized and investigated for its antibacterial spectrum, action mechanism, immunoregulatory property as well as the inhibition effects on bacterial invasion and human colon cancer cells growth. The results showed that BO18 was active against Gram-positive bacteria Bscillus subiilis, Micrococcus luteus, and Staphylococcus aureus, as well as Gram-negative bacteria Vibrio alginolyticus, Vibrio litoralis, Vibrio parahaemolyticus and Vibrio vulnificus. BO18 treatment facilitated the bactericidal process of erythromycin and rifampicin by enhancing the permeability of the outer membrane. During its interaction with V. alginolyticus, BO18 exerted its antibacterial activity by destroying cell membrane integrity, penetrating into the cytoplasm and binding to genomic DNA and total RNA. In vitro analysis indicated BO18 could enhance the respiratory burst ability and regulate the expression of immune related genes of macrophages. In vivo detection showed the administration of fish with BO18 before bacterial infection significantly reduced pathogen dissemination and replication in tissues. In addition, BO18 exerted a cytotoxic effect on the growth of human colon cancer cells HT-29. Together, these results add new insights into the function of teleost BPIs, and support that BO18 is a novel and broad-spectrum antibacterial peptide with potential to apply in fighting pathogenic infection in aquaculture.
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Affiliation(s)
- Qin-Qin Gu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China
| | - Shu-Wen He
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China
| | - Li-Hui Liu
- Key Laboratory of Fishery Drug Development, Ministry of Agriculture and Rural Affairs, Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, Guangdong Province, 510380, PR China
| | - Guang-Hua Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China
| | - Dong-Fang Hao
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China
| | - Hong-Mei Liu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China
| | - Chang-Biao Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China
| | - Chao Li
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China
| | - Min Zhang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, Shandong Province, China.
| | - Ning-Qiu Li
- Key Laboratory of Fishery Drug Development, Ministry of Agriculture and Rural Affairs, Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, Guangdong Province, 510380, PR China.
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137
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Raha AA, Ghaffari SD, Henderson J, Chakraborty S, Allinson K, Friedland RP, Holland A, Zaman SH, Mukaetova-Ladinska EB, Raha-Chowdhury R. Hepcidin Increases Cytokines in Alzheimer's Disease and Down's Syndrome Dementia: Implication of Impaired Iron Homeostasis in Neuroinflammation. Front Aging Neurosci 2021; 13:653591. [PMID: 33994996 PMCID: PMC8120149 DOI: 10.3389/fnagi.2021.653591] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/23/2021] [Indexed: 12/21/2022] Open
Abstract
The liver-derived hormone hepcidin, a member of the defensin family of antimicrobial peptides, plays an important role in host defense and innate immunity due to its broad antibacterial and antiviral properties. Ferritin, an iron storage protein is often associated with iron deficiency, hypoferritinemia, hypoxia, and immune complications, which are all significant concerns for systemic infection in Alzheimer’s disease (AD) and Down’s syndrome (DS) dementia. Serum and post-mortem brain samples were collected from AD, DS and age-matched control subjects. Serum samples were analyzed with ELISA for ferritin, hepcidin and IL-6. Additionally, post-mortem brain sections were assessed by immunohistochemistry for iron-related and inflammatory proteins. A significant increase in serum hepcidin levels was found in DS, compared to controls and AD subjects (p < 0.0001). Hepcidin protein was visible in the epithelial cells of choroid plexus, meningeal macrophages and in the astrocytes close to the endothelium of blood vessels. Hepcidin co-localized with IL-6, indicating its anti-inflammatory properties. We found significant correlation between hypoferritinemia and elevated levels of serum hepcidin in AD and DS. Hepcidin can be transported via macrophages and the majority of the vesicular hepcidin enters the brain via a compromised blood brain barrier (BBB). Our findings provide further insight into the molecular implications of the altered iron metabolism in acute inflammation, and can aid towards the development of preventive strategies and novel treatments in the fight against neuroinflammation.
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Affiliation(s)
- Animesh Alexander Raha
- John van Geest Centre for Brain Repair, Department of Clinical Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - Seyedeh Deniz Ghaffari
- John van Geest Centre for Brain Repair, Department of Clinical Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - James Henderson
- John van Geest Centre for Brain Repair, Department of Clinical Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - Subhojit Chakraborty
- John van Geest Centre for Brain Repair, Department of Clinical Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - Kieren Allinson
- Clinical Pathology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Robert P Friedland
- Department of Neurology, University of Louisville, Louisville, KY, United States
| | - Anthony Holland
- Cambridge Intellectual and Developmental Disabilities Research Group, Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Shahid H Zaman
- Cambridge Intellectual and Developmental Disabilities Research Group, Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom.,Cambridgeshire and Peterborough Foundation NHS Trust, Cambridge, United Kingdom
| | - Elizabeta B Mukaetova-Ladinska
- Department of Neuroscience, Psychology and Behaviour, University of Leicester, Leicester, United Kingdom.,The Evington Centre, Leicestershire Partnership NHS Trust, Leicester, United Kingdom
| | - Ruma Raha-Chowdhury
- John van Geest Centre for Brain Repair, Department of Clinical Neuroscience, University of Cambridge, Cambridge, United Kingdom.,Cambridge Intellectual and Developmental Disabilities Research Group, Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom.,Cambridgeshire and Peterborough Foundation NHS Trust, Cambridge, United Kingdom
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138
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Titmarsh HF, Woods GA, Cartwright JA, Kilpatrick S, Gaylor D, Berry J, Gow A, Bommer NX, Gunn-Moore D, Handel I, Mellanby RJ. Low vitamin D status is associated with anaemia in hospitalised cats. Vet Rec 2021; 187:e6. [PMID: 33638545 DOI: 10.1136/vr.105626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 01/03/2020] [Accepted: 01/13/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND The major physiological role of vitamin D has traditionally been considered to be the regulation of calcium homeostasis and maintenance of skeletal health. However, there is increasing evidence that vitamin D influences a wider range of physiological processes including erythropoiesis. Vitamin D (25-hydroxyvitamin D, 25(OH)D) deficiency concentrations have been associated with anaemia in human beings. In contrast, the relationship between vitamin D status and erythropoiesis has not been investigated in cats. METHODS Clinical records of cats consecutively presenting between November 2013 and February 2015 were reviewed. For each cat, data including sex, age, breed, serum albumin and creatinine concentrations, and appetite scores were extracted. A multivariable linear regression model was constructed to examine the relationship between 25(OH)D concentrations and these variables. RESULTS Cats with anaemia had significantly lower 25(OH)D concentrations (median 49.5 nmol/l, n=31) than cats with packed cell volume above the lower limit of the reference range (median 109.0 nmol/l, n=130) (P<0.001). A binary logistic regression found that red blood cell count and mean corpuscular volume were negatively correlated with serum 25(OH)D concentrations (P<0.001 and P=0.007, respectively). CONCLUSION Vitamin D (25(OH)D) concentration is positively associated with red blood cell count and mean corpuscular volume in cats with a wide range of different illnesses.
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Affiliation(s)
- Helen Faye Titmarsh
- Hospital for Small Animals, Royal Dick School of Veterinary Studies and The Roslin Institute, Edinburgh, UK
| | - Glynn Alan Woods
- Hospital for Small Animals, University of Edinburgh, Edinburgh, UK
| | - Jennifer A Cartwright
- Hospital for Small Animals, Royal Dick School of Veterinary Studies and The Roslin Institute, Edinburgh, UK.,Hospital for Small Animals, University of Edinburgh, Edinburgh, UK
| | - Scott Kilpatrick
- Division of Veterinary Clinical Studies, University of Edinburgh, Edinburgh, UK
| | - Donna Gaylor
- Division of Veterinary Clinical Studies, Royal (Dick) School of Veterinary Studies, Edinburgh, UK
| | - Jaqueline Berry
- Clinical Biochemistry, Manchester Royal Infirmary, Manchester, UK
| | - Adam Gow
- Internal Medicine, University of Edinburgh, Edinburgh, UK
| | - Nick X Bommer
- Division of Veterinary Clinical Studies, Royal (Dick) School of Veterinary Studies, Edinburgh, UK
| | - Danielle Gunn-Moore
- Easter Bush Veterinary Centre, Royal (Dick) School of Veterinary Studies, Edinburgh, UK
| | - Ian Handel
- Centre for Infectious Diseases, University of Edinburgh, Edinburgh, UK
| | - Richard J Mellanby
- Division of Veterinary Clinical Studies, University of Edinburgh, Edinburgh, UK
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139
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Varga E, Pap R, Jánosa G, Sipos K, Pandur E. IL-6 Regulates Hepcidin Expression Via the BMP/SMAD Pathway by Altering BMP6, TMPRSS6 and TfR2 Expressions at Normal and Inflammatory Conditions in BV2 Microglia. Neurochem Res 2021; 46:1224-1238. [PMID: 33835366 PMCID: PMC8053173 DOI: 10.1007/s11064-021-03322-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/08/2021] [Accepted: 01/27/2021] [Indexed: 12/19/2022]
Abstract
The hormone hepcidin plays a central role in controlling iron homeostasis. Iron-mediated hepcidin synthesis is triggered via the BMP/SMAD pathway. At inflammation, mainly IL-6 pro-inflammatory cytokine mediates the regulation of hepcidin via the JAK/STAT signalling pathway. Microglial cells of the central nervous system are able to recognize a broad spectrum of pathogens via toll-like receptors and initiate inflammatory response. Although the regulation of hepcidin synthesis is well described in many tissues, little is known about the inflammation mediated hepcidin regulation in microglia. In this study, we investigated the pathways, which are involved in HAMP regulation in BV2 microglia due to inflammatory mediators and the possible relationships between the iron regulatory pathways. Our results showed that IL-6 produced by resting BV2 cells was crucial in maintaining the basal HAMP expression and hepcidin secretion. It was revealed that IL-6 neutralization decreased both STAT3 and SMAD1/5/9 phosphorylation suggesting that IL-6 proinflammatory cytokine is necessary to maintain SMAD1/5/9 activation. We revealed that IL-6 influences BMP6 and TMPRSS6 protein levels, moreover it modified TfR2 expression, as well. In this study, we revealed that BV2 microglia increased their hepcidin secretion upon IL-6 neutralization although the major regulatory pathways were inhibited. Based on our results it seems that both at inflammation and at normal condition the absence of IL-6 triggered HAMP transcription and hepcidin secretion via the NFκB pathway and possibly by the autocrine effect of TNFα cytokine on BV2 microglia.
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Affiliation(s)
- Edit Varga
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary
| | - Ramóna Pap
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary
| | - Gergely Jánosa
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary
| | - Katalin Sipos
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary
| | - Edina Pandur
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary.
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Efficacy and Safety of Intravenous Ferric Carboxymaltose in Patients with Postoperative Anemia Following Same-Day Bilateral Total Knee Arthroplasty: A Randomized Controlled Trial. J Clin Med 2021; 10:jcm10071457. [PMID: 33918110 PMCID: PMC8036569 DOI: 10.3390/jcm10071457] [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: 03/01/2021] [Revised: 03/25/2021] [Accepted: 03/28/2021] [Indexed: 01/28/2023] Open
Abstract
(1) Background: The purpose of this study was to evaluate the efficacy and safety of intravenous (IV) ferric carboxymaltose (FCM) to treat acute postoperative anemia following same-day bilateral total knee arthroplasty (TKA). (2) Methods: A total of 118 patients who underwent same-day bilateral TKA were randomly assigned to two groups: an FCM group (FCM infusion, 58 patients) and a Control group (placebo with normal saline, 60 patients). The primary endpoint was the number of responders with a Hb increase of two or more points by the second postoperative week. The secondary endpoints were Hb level, iron metabolism variables and blood transfusion rate at 2, 6 and 12 weeks after surgery. (3) Results: The FCM group had more Hb responders than the Control group (62.1% vs. 31.6%, p < 0.001). The Hb level was significantly higher in the FCM group during 12 weeks after surgery (all p < 0.05). Ferritin, iron and transferrin saturation levels were significantly higher in the FCM group from 2 to 12 weeks postoperatively (all p < 0.05). There was no difference in transfusion rate after surgery (p > 0.05). (4) Conclusion: In patients with postoperative anemia after same-day bilateral TKA, IV FCM infusion significantly improved Hb response two weeks after surgery without severe adverse events compared to placebo. In contrast, transfusion rate and various parameters of quality of life assessment up to 12 weeks did not vary between these groups. Level of evidence: Level I.
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141
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Sun J, Li TR, Yang ZY. A novel fluorescent probe based on 7,8-benzochromone-3-carbaldehyde-(rhodamine B carbonyl) hydrazone for detection of trivalent cations and Zn2+ in different systems. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113207] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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142
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Abstract
Background: Aortic valve sclerosis (AVSc) is defined as the thickening and calcification
of aortic valve cusps, in the absence of obstruction of ventricular outflow.
AVSc is linked with a clear imbalance in some trace elements. Aims: The objective of this study was to investigate the relationship between AVSc
and serum levels of iron (Fe), zinc (Zn), selenium (Se), and copper (Cu).
Additionally, this research aimed to explore the clinical significance of
human serum zinc, selenium, copper, and iron concentrations as a potential
new biomarker for AVSc patients and to clarify the pathophysiological role
in individuals at risk of developing AVSc. Patients and methods: The study included 40 subjects with AVSc (25% male and 75% female) who were
compared with a healthy control group with the same gender ratio. AVSc was
based on comprehensive echocardiographic assessments. Blood samples were
taken and Zn and Cu concentrations were determined through the use of atomic
absorption spectroscopy. Se was measured using an inductively coupled plasma
mass spectrometry device and Fe was measured using a Beckman Coulter
instrument. Results: There was a significant difference in the prevalence of diabetes, blood
pressure levels, and body mass index between the patients and the healthy
subjects (p < 0.05). The differences between the serum
Fe, Se, and Cu levels of the AVSc patients and the healthy subjects
(p > 0.05) were recorded. The serum Zn of AVSc
patients when compared was significantly lower compared with that of the
control group (p < 0.01). Conclusion: Patients with AVSc had an imbalance in some of the trace elements in their
blood. The patient group’s valves had higher serum Cu levels and lower serum
Se, Zn, and Fe concentrations compared with the healthy group’s valves. In
the valve patients as compared, AVSc had a high prevalence of obesity,
hypertension, and diabetes.
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Affiliation(s)
- Hataw Al-Taesh
- Department of Biochemistry Science and Technology, Institute of Natural and Applied Sciences, Faculty of Arts and Science, Gaziantep University, Gaziantep, Turkey
| | - Abuzer Çelekli
- Department of Biology, Faculty of Arts and Science, Gaziantep University, Gaziantep, Turkey
| | - Murat Sucu
- Department of Cardiology, Gaziantep University, Gaziantep, 27310, Turkey
| | - Seyithan Taysi
- Department of Medical Biochemistry, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
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Nishina S, Tomiyama Y, Ikuta K, Tatsumi Y, Toki Y, Kato A, Kato K, Yoshioka N, Sasaki K, Hara Y, Hino K. Long-term phlebotomy successfully alleviated hepatic iron accumulation in a ferroportin disease patient with a mutation in SLC40A1: a case report. BMC Gastroenterol 2021; 21:111. [PMID: 33673803 PMCID: PMC7934381 DOI: 10.1186/s12876-021-01674-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 02/17/2021] [Indexed: 02/08/2023] Open
Abstract
Background Hereditary hemochromatosis is a heterogenous group of inherited iron-overload conditions that is characterized by increased intestinal absorption and deposition in vital organs. Hepcidin is a soluble regulator that acts to attenuate both intestinal iron absorption and iron release from reticuloendothelial macrophages through internalization of ferroportin-1, an iron exporter. Ferroportin disease is hereditary hemochromatosis which is affected by SLC40A1, a gene coding ferroportin-1, and phenotypically classified into two forms (classical and nonclassical). In nonclassical form, ferroportin mutations are responsible for a gain of function with full iron export capability but insensitivity to downregulation by hepcidin. Here, we report a case of nonclassical ferroportin disease. Case presentation A 46-year-old Japanese man showed elevated serum iron (284 μg/dl), ferritin (1722 ng/ml), transferrin saturation ratio (91.3%), and hepcidin-25 level (139.6 ng/ml). Magnetic resonance imaging (MRI) demonstrated a marked reduction in the signal intensity of the liver in T1- and T2-weighted images. The liver histology exhibited a large amount of iron that had accumulated predominantly in hepatocytes. We identified a heterozygous 1520A > G (p.H507R) mutation in the SLC40A1 gene. Phlebotomy (400 ml at a time) was monthly performed for 3 years in this patient. Importantly, the serum hepcidin level (1.0 ng/ml) was normal when the serum ferritin level was normal and hepatic iron accumulation was remarkably reduced after 3 years of phlebotomy. Conclusions The present case demonstrated for the first time that there was a correlation between hepatic iron levels as measured by MRI and serum hepcidin levels through long-term phlebotomy in a patient with ferroportin disease with the p.H507R mutation of in SLC40A1.
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Affiliation(s)
- Sohji Nishina
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Yasuyuki Tomiyama
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Katsuya Ikuta
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan.,Japanese Red Cross Hokkaido Blood Center, Sapporo, Japan
| | - Yasuaki Tatsumi
- Laboratory of Medicine, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan
| | - Yasumichi Toki
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Ayako Kato
- Laboratory of Medicine, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan
| | - Koichi Kato
- Laboratory of Medicine, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan
| | - Naoko Yoshioka
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Kyo Sasaki
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Yuichi Hara
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan
| | - Keisuke Hino
- Department of Hepatology and Pancreatology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan.
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Han Y, Huang W, Meng H, Zhan Y, Hou J. Pro-inflammatory cytokine interleukin-6-induced hepcidin, a key mediator of periodontitis-related anemia of inflammation. J Periodontal Res 2021; 56:690-701. [PMID: 33656216 DOI: 10.1111/jre.12865] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/05/2021] [Accepted: 02/06/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To investigate whether anemia of inflammation (AI) occurs in periodontitis patients and to further explore underlying pathogenesis of periodontitis-related AI by an experimental periodontitis model. BACKGROUND Previous studies have reported periodontitis patients could show a tendency toward AI. However, the relationship between periodontitis and AI remains unclear, and the related pathological mechanisms have not been identified. MATERIALS AND METHODS Periodontal clinical parameters, inflammatory markers, and anemia-related indicators were compared between 98 aggressive periodontitis (AgP) patients and 103 healthy subjects. An experimental periodontitis model was induced by ligature placement in mice. The changes in mice inflammatory markers, anemia indicators, hepcidin mRNA expression, and serum hepcidin concentrations were measured. Human and mouse liver cells were treated with interleukin-6 (IL-6) for analyzing the changes in hepcidin expression based on mRNA and protein levels. RESULTS AgP patients exhibited higher white blood cell counts, IL-6, and C-reactive protein. Adjusted linear regression analyses showed correlations between AgP and decreased hemoglobin (HGB) and hematocrit (HCT). The ligature-induced periodontitis caused systemic inflammation and elevated IL-6 levels. Lower red blood cell counts, HGB, and HCT were detected, whereas the levels of hepcidin mRNA expression and serum hepcidin concentrations increased. The treatment of hepatocytes with IL-6 induced both hepcidin mRNA expression and hepcidin secretion. CONCLUSIONS Systemic inflammation induced by periodontitis leads to an increased risk for AI. IL-6-induced hepcidin could play a central mediator role and act as a key pathologic mechanism. Our results demonstrate periodontitis may be considered as an additional inflammatory disease contributing to the development of AI.
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Affiliation(s)
- Ye Han
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Wenxue Huang
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Huanxin Meng
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yalin Zhan
- First Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Jianxia Hou
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
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145
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Han J, Wang K. Clinical significance of serum hepcidin in the diagnosis and treatment of patients with anemia of chronic disease: a meta-analysis. Biomarkers 2021; 26:296-301. [PMID: 33653208 DOI: 10.1080/1354750x.2021.1893812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To systematically evaluate the value of serum hepcidin in the diagnosis of Anaemia of Chronic Disease (ACD) in order to provide appropriate treatment. METHODS Literature search was performed in PubMed, EMbase, Cochrane Library, CNKI, CBMdisc and CSPD till Jan, 2020. Studies using hepcidin assay for the diagnosis of ACD were included. Two researchers selected the literature according to the pre-defined inclusion and exclusion criteria. Meta-analysis was performed using Stata 15.0. RESULTS A total of 10 studies were included, including 739 patients with 402 ACD patients. Heterogeneity test results suggest that there is no statistical heterogeneity between the included studies and Meta- analysis was performed using a fixed-effects model. Results showed that serum hepcidin levels in patients with ACD combined with SEN, SPE, PLR, NLR, and Diagnostic OR were 0.94 [95% CI (0.90, 0.96)], 0.85 [95% CI (0.81, 0.88)], 6.1 [95% CI (4.8, 7.6)], 0.08 [95% CI (0.05, 0.12)] and 81 [95% CI (47, 139)] respectively. The area under the SROC curve (AUC) value was 0.91. CONCLUSION Serum hepcidin assay is a valuable method to diagnose ACD in patients. However, due to the limitations of the quantity and quality of the research, the above conclusions need more research to verify.
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Affiliation(s)
- Jie Han
- Department of Hepatology, Qilu Hospital of Shandong University and Hepatology Institute of Shandong University, Jinan, China
| | - Kai Wang
- Department of Hepatology, Qilu Hospital of Shandong University and Hepatology Institute of Shandong University, Jinan, China
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146
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Oxidative Stress, Plant Natural Antioxidants, and Obesity. Int J Mol Sci 2021; 22:ijms22041786. [PMID: 33670130 PMCID: PMC7916866 DOI: 10.3390/ijms22041786] [Citation(s) in RCA: 162] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 02/07/2023] Open
Abstract
Oxidative stress is important in the pathophysiology of obesity, altering regulatory factors of mitochondrial activity, modifying the concentration of inflammation mediators associated with a large number and size of adipocytes, promoting lipogenesis, stimulating differentiation of preadipocytes to mature adipocytes, and regulating the energy balance in hypothalamic neurons that control appetite. This review discusses the participation of oxidative stress in obesity and the important groups of compounds found in plants with antioxidant properties, which include (a) polyphenols such as phenolic acids, stilbenes, flavonoids (flavonols, flavanols, anthocyanins, flavanones, flavones, flavanonols, and isoflavones), and curcuminoids (b) carotenoids, (c) capsaicinoids and casinoids, (d) isothiocyanates, (e) catechins, and (f) vitamins. Examples are analyzed, such as resveratrol, quercetin, curcumin, ferulic acid, phloretin, green tea, Hibiscus Sabdariffa, and garlic. The antioxidant activities of these compounds depend on their activities as reactive oxygen species (ROS) scavengers and on their capacity to prevent the activation of NF-κB (nuclear factor κ-light-chain-enhancer of activated B cells), and reduce the expression of target genes, including those participating in inflammation. We conclude that natural compounds have therapeutic potential for diseases mediated by oxidative stress, particularly obesity. Controlled and well-designed clinical trials are still necessary to better know the effects of these compounds.
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147
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Dixit SP, Rajan L, Palaniswamy D, Mohankumar SK. Importance of Iron Absorption in Human Health: An Overview. CURRENT NUTRITION & FOOD SCIENCE 2021. [DOI: 10.2174/1573401316999200801021752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Iron is one of the essential elements required for human health, as it plays a vital role in
a number of metabolic, growth, and developmental processes, including erythropoiesis, DNA synthesis,
electron transport, and others. Iron deficiency is a concern in both developing and developed
(industrialized) countries, and, in particular, young women are highly vulnerable. This review investigates
the dietary and genetic determinants of iron metabolism in the human body and a possible
solution to combat iron deficiency by exploring various targets. Hence, this review mainly focuses
on the assessment of dietary and genetic factors affecting the iron bioavailability and homeostasis
and collates the available information from 2000 to till date from the Pubmed database. The dietary
factors, including ascorbic acid, an important factor in animal protein foods (meat, fish, and
poultry), enhance iron absorption whereas the phytic acid, soy protein, calcium, and polyphenols
have been reported to inhibit iron absorption. However, the effects of these dietary factors on iron
absorption do not necessarily translate into an association with iron status and iron stores (serum
ferritin concentration). Moreover, the genetic factors influence the absorption of iron involving
HFE, TFR2, FPN1, and HAMP in humans. Further research is needed to determine optimal dietary
recommendations for both the prevention and treatment of iron deficiency.
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Affiliation(s)
- Satya P. Dixit
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rockland’s, Ooty 643001, Tamil Nadu, India
| | - Logesh Rajan
- TIFAC CORE in Herbal Drugs, Department of Pharmacognosy, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rockland’s, Ooty 643001, Tamil Nadu, India
| | - Dhanabal Palaniswamy
- TIFAC CORE in Herbal Drugs, Department of Pharmacognosy, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rockland’s, Ooty 643001, Tamil Nadu, India
| | - Suresh K. Mohankumar
- TIFAC CORE in Herbal Drugs, Department of Pharmacognosy, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Rockland’s, Ooty 643001, Tamil Nadu, India
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148
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Rugină C, Mărginean CO, Meliţ LE, Huţanu A, Ghiga DV, Modi V, Mărginean C. Systemic inflammatory status - a bridge between gestational weight gain and neonatal outcomes (STROBE-compliant article). Medicine (Baltimore) 2021; 100:e24511. [PMID: 33592904 PMCID: PMC7870210 DOI: 10.1097/md.0000000000024511] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 01/06/2021] [Indexed: 01/05/2023] Open
Abstract
Pregnant women with excessive gestational weight gain express an inflammatory status with multiple negative effects on birth outcomes.The aim of this study was to identify the relationship between gestational weight gain at different gestational ages and inflammatory status in pregnant women and their newborns assessing both interleukin 6 and 8, as well as hepcidin in these couples.Our study included 170 pregnant women and their newborns. Pregnant women were clinically assessed at the end of the 1st trimester and at term, whereas the newborns were assessed over the first 3 days of life. The levels of interleukin 6, 8 and hepcidin were measured in both pregnant women and their newborns.We noticed higher levels of interleukin 6, interleukin 8 and hepcidin in pregnant women at the time of delivery as compared to the end of the 1st trimester. We observed a direct significant correlation between gestational weight gain at the time of delivery and interleukin 8 in both mothers [r = 0.1834, 95% CI: 0.0293-0.3290, (P = .0167)] and newborns [r = 0.1790, 95% CI: 0.0248-0.3249, (P = .0195)]. Our study underlined that a higher gestational weight gain resulted in a significantly higher birth weight [r = 0.2190, 95% CI: 0.0663-0.3617, (P = .0041)].Our findings suggest that interleukin 8 might be an important indicator of inflammatory status in both mothers and newborns. Moreover, excessive gestational weight gain was associated with an increase in birth weight.
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Affiliation(s)
| | | | | | - Adina Huţanu
- Research Laboratory, Center for Advanced Medical and Pharmaceutical Research, “George Emil Palade” University of Medicine
| | - Dana Valentina Ghiga
- Department of Medical Informatics and Biostatistics, “George Emil Palade” University of Medicine
| | - Viviana Modi
- Department of Obstetrics and Gynecology, “George Emil Palade” University of Medicine, Pharmacy, Sciences and Technology Târgu Mureş, Gheorghe Marinescu street no 38, Târgu Mureş, Romania
| | - Claudiu Mărginean
- Department of Obstetrics and Gynecology, “George Emil Palade” University of Medicine, Pharmacy, Sciences and Technology Târgu Mureş, Gheorghe Marinescu street no 38, Târgu Mureş, Romania
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Agoro R, Park MY, Le Henaff C, Jankauskas S, Gaias A, Chen G, Mohammadi M, Sitara D. C-FGF23 peptide alleviates hypoferremia during acute inflammation. Haematologica 2021; 106:391-403. [PMID: 32193252 PMCID: PMC7849576 DOI: 10.3324/haematol.2019.237040] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 03/13/2020] [Indexed: 12/22/2022] Open
Abstract
Hypoferremia results as an acute phase response to infection and inflammation aiming to reduce iron availability to pathogens. Activation of toll-like receptors (TLR), the key sensors of the innate immune system, induces hypoferremia mainly through the rise of the iron hormone hepcidin. Conversely, stimulation of erythropoiesis suppresses hepcidin expression via induction of the erythropoietin-responsive hormone erythroferrone. Iron deficiency stimulates transcription of the osteocyte- secreted protein FGF23. Here we hypothesized that induction of FGF23 in response to TLR4 activation is a potent contributor to hypoferremia and, thus, impairment of its activity may alleviate hypoferremia induced by lipopolysaccharide (LPS), a TLR 4 agonist. We used the C-terminal tail of FGF23 to impair endogenous full-length FGF23 signaling in wildtype mice, and investigated its impact on hypoferremia. Our data show that FGF23 is induced as early as pro-inflammatory cytokines in response to LPS, followed by upregulation of hepcidin and downregulation of erythropoietin (Epo) expression in addition to decreased serum iron and transferrin saturation. Further, LPS-induced hepatic and circulating hepcidin were significantly reduced by FGF23 signaling disruption. Accordingly, iron sequestration in liver and spleen caused by TLR4 activation was completely abrogated by FGF23 signaling inhibition, resulting in alleviation of serum iron and transferrin saturation deficit. Taken together, our studies highlight for the first time that inhibition of FGF23 signaling alleviates LPS-induced acute hypoferremia.
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Affiliation(s)
- Rafiou Agoro
- Basic Science and Craniofacial Biology, NYU College of Dentistry, New York, USA
| | - Min Young Park
- Basic Science and Craniofacial Biology, NYU College of Dentistry, New York, USA
| | - Carole Le Henaff
- Basic Science and Craniofacial Biology, NYU College of Dentistry, New York, USA
| | | | - Alina Gaias
- Basic Science and Craniofacial Biology, NYU College of Dentistry, New York, USA
| | - Gaozhi Chen
- Chemical Biology Research Center, Wenzhou Medical University, Wenzhou, China
| | - Moosa Mohammadi
- Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, USA
| | - Despina Sitara
- NYU College of Dentistry and NYU School of Medicine, New York, USA
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150
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Mendoza E, Duque X, Moran S, Martínez-Andrade G, Reyes-Maldonado E, Flores-Huerta S, Martinez H. Hepcidin and other indicators of iron status, by alpha-1 acid glycoprotein levels, in a cohort of Mexican infants. Ann Hematol 2021; 100:879-890. [PMID: 33515046 DOI: 10.1007/s00277-021-04402-5] [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: 08/17/2020] [Accepted: 01/03/2021] [Indexed: 11/25/2022]
Abstract
The purpose of this study was to describe the changes in iron status indicators at 6 and 12 months of age, controlling by inflammation by measuring alpha-1 acid glycoprotein (AGP). This longitudinal study included 48 healthy-term singleton infants with birth weight ≥ 2500 g, born in hospitals of the Mexican Institute for Social Security. Complete blood count, ferritin, soluble transferrin receptor (sTfR), hepcidin, and AGP were measured in blood at 6 and 12 months of age. sTfR/ferritin ratio and total body iron (TBI) stores were calculated. Hemoglobin and sTfR/ferritin ratio increased with age, while ferritin and TBI decreased. In infants without inflammation, hepcidin, sTfR, and MVC did not show significant changes from 6 to 12 months of age, while ferritin and TBI decreased. In infants with inflammation, hepcidin, TBI, and ferritin levels increased, while hemoglobin and sTfR/ferritin ratio decreased. MVC and sTfR did not change significantly in the presence or absence of inflammation. Hepcidin concentration correlated positively and significantly with ferritin and TBI stores and showed significant negative correlation with sTfR/ferritin ratio. Our study showed that, in absence of inflammation and ID, during the first year of life, physiological changes occur in hemoglobin and ferritin levels as well as in indicators derived from ferritin and sTfR; in contrast, hepcidin and sTfR did not show significant change. However, hepcidin concentration was lower in infants with ID and was higher when inflammation was present, supporting that infants have a functional hepcidin response to changes in iron stores.
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Affiliation(s)
- Eugenia Mendoza
- Infectious Diseases Research Unit, Pediatric Hospital, Mexican Institute for Social Security, 06720, Mexico City, Mexico
| | - Ximena Duque
- Infectious Diseases Research Unit, Pediatric Hospital, Mexican Institute for Social Security, 06720, Mexico City, Mexico.
| | - Segundo Moran
- Gastroenterology Research Laboratory, Mexican Institute for Social Security, 06720, Mexico City, Mexico
| | - Gloria Martínez-Andrade
- Research Unit in Epidemiology and Health Services, Mexican Institute for Social Security, 06720, Mexico City, Mexico
| | - Elba Reyes-Maldonado
- Morphology Department, National School of Biological Sciences, Instituto Politécnico Nacional, 01135, Mexico City, Mexico
| | - Samuel Flores-Huerta
- Research Department of Community Health, Hospital Infantil de México "Federico Gómez", 06720, Mexico City, Mexico
| | - Homero Martinez
- Dirección de Investigación, Hospital Infantil de México "Federico Gómez", 06720, Mexico City, Mexico
- Global Technical Services-NTEAM, Nutrition International, Ottawa, ON, K2P 2K3, Canada
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