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Delanghe JR, Delrue C, Speeckaert R, Speeckaert MM. Unlocking the link between haptoglobin polymorphism and noninfectious human diseases: insights and implications. Crit Rev Clin Lab Sci 2024; 61:275-297. [PMID: 38013410 DOI: 10.1080/10408363.2023.2285929] [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: 07/21/2023] [Accepted: 11/16/2023] [Indexed: 11/29/2023]
Abstract
Haptoglobin (Hp) is a polymorphic protein that was initially described as a hemoglobin (Hb)-binding protein. The major functions of Hp are to scavenge Hb, prevent iron loss, and prevent heme-based oxidation. Hp regulates angiogenesis, nitric oxide homeostasis, immune responses, and prostaglandin synthesis. Genetic polymorphisms in the Hp gene give rise to different phenotypes, including Hp 1-1, Hp 2-1, and Hp 2-2. Extensive research has been conducted to investigate the association between Hp polymorphisms and several medical conditions including cardiovascular disease, inflammatory bowel disease, cancer, transplantation, and hemoglobinopathies. Generally, the Hp 2-2 phenotype is associated with increased disease risk and poor outcomes. Over the years, the Hp 2 allele has spread under genetic pressures. Individuals with the Hp 2-2 phenotype generally exhibit lower levels of CD163 expression in macrophages. The decreased expression of CD163 may be associated with the poor antioxidant capacity in the serum of subjects carrying the Hp 2-2 phenotype. However, the Hp 1-1 phenotype may confer protection in some cases. The Hp1 allele has strong antioxidant, anti-inflammatory, and immunomodulatory properties. It is important to note that the benefits of the Hp1 allele may vary depending on genetic and environmental factors as well as the specific disease or condition under consideration. Therefore, the Hp1 allele may not necessarily confer advantages in all situations, and its effects may be context-dependent. This review highlights the current understanding of the role of Hp polymorphisms in cardiovascular disease, inflammatory bowel disease, cancer, transplantation, hemoglobinopathies, and polyuria.
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Affiliation(s)
- Joris R Delanghe
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Charlotte Delrue
- Department of Nephrology, Ghent University Hospital, Ghent, Belgium
| | | | - Marijn M Speeckaert
- Department of Nephrology, Ghent University Hospital, Ghent, Belgium
- Research Foundation-Flanders (FWO), Brussels, Belgium
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Sovira N, Lubis M, Wahidiyat PA, Suyatna FD, Gatot D, Bardosono S, Sadikin M. Effects of α-tocopherol on hemolysis and oxidative stress markers on red blood cells in β-thalassemia major. Clin Exp Pediatr 2020; 63:314-320. [PMID: 32668823 PMCID: PMC7402984 DOI: 10.3345/cep.2019.00542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 02/18/2020] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The accumulation of unpaired α-globin chains in patients with β-thalassemia major may clinically create ineffective erythropoiesis, hemolysis, and chronic anemia. Multiple blood transfusions and iron overload cause cellular oxidative damage. However, α-tocopherol, an antioxidant, is a potent scavenger of lipid radicals in the membranes of red blood cells (RBCs) of patients with β-thalassemia major. PURPOSE To evaluate the effects of α-tocopherol on hemolysis and oxidative stress markers on the RBC membranes of patients with β-thalassemia major. METHODS Forty subjects included in this randomized controlled trial were allocated to the placebo and α-tocopherol groups. Doses of α-tocopherol were based on Institute of Medicine recommendations: 4-8 years old, 200 mg/day; 9-13 years old, 400 mg/day; 14-18 years old, 600 mg/day. Hemolysis, oxidative stress, and antioxidant variables were evaluated before and after 4-week α-tocopherol or placebo treatment, performed before blood transfusions. RESULTS Significant enhancements in plasma haptoglobin were noted in the α-tocopherol group (3.01 mg/dL; range, 0.60-42.42 mg/dL; P=0.021). However, there was no significant intergroup difference in osmotic fragility test results; hemopexin, malondialdehyde, reduced glutathione (GSH), or oxidized glutathione (GSSG) levels; or GSH/GSSG ratio. CONCLUSION Use of α-tocopherol could indirectly improve hemolysis and haptoglobin levels. However, it played no significant role in oxidative stress or as an endogen antioxidant marker in β-thalassemia major.
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Affiliation(s)
- Nora Sovira
- Division of Pediatric Emergency & Intensive Care, Department of Pediatrics, Faculty of Medicine, University of Syiah Kualal/Dr. Zainoel Abidin Hospital, Banda Aceh, Indonesia
| | - Munar Lubis
- Division of Pediatric Emergency & Intensive Care, Department of Pediatrics, Faculty of Medicine, University of Sumatera Utara/University of Sumatera Utara Hospital, Medan, Indonesia
| | - Pustika Amalia Wahidiyat
- Division of Hematology Oncology, Department of Pediatrics, Faculty of Medicine, University of Indonesia/Dr. Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Franciscus D Suyatna
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Indonesia/Dr. Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Djajadiman Gatot
- Division of Hematology Oncology, Department of Pediatrics, Faculty of Medicine, University of Indonesia/Dr. Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Saptawati Bardosono
- Department of Nutrition, Faculty of Medicine, University of Indonesia/Dr. Cipto Mangunkusumo Hospital, Jakarta, Indonesia
| | - Mohammad Sadikin
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Indonesia/Dr. Cipto Mangunkusumo Hospital, Jakarta, Indonesia
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Yin Y, Yang T, Liu H, Huang Z, Zhang Y, Song Y, Wang W, Guang X, Sahu SK, Kristiansen K. The draft genome of mandrill (Mandrillus sphinx): An Old World monkey. Sci Rep 2020; 10:2431. [PMID: 32051450 PMCID: PMC7016171 DOI: 10.1038/s41598-020-59110-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 12/02/2019] [Indexed: 11/15/2022] Open
Abstract
Mandrill (Mandrillus sphinx) is a primate species, which belongs to the Old World monkey (Cercopithecidae) family. It is closely related to human, serving as a model for human health related research. However, the genetic studies on and genomic resources of mandrill are limited, especially in comparison to other primate species. Here we produced 284 Gb data, providing 96-fold coverage (considering the estimated genome size of 2.9 Gb), to construct a reference genome for the mandrill. The assembled draft genome was 2.79 Gb with contig N50 of 20.48 Kb and scaffold N50 of 3.56 Mb. We annotated the mandrill genome to find 43.83% repeat elements, as well as 21,906 protein-coding genes. The draft genome was of good quality with 98% gene annotation coverage by Benchmarking Universal Single-Copy Orthologs (BUSCO). Based on comparative genomic analyses of the Major Histocompatibility Complex (MHC) of the immune system in mandrill and human, we found that 17 genes in the mandrill that have been associated with disease phenotypes in human such as Lung cancer, cranial volume and asthma, barbored amino acids changing mutations. Gene family analyses revealed expansion of several genes, and several genes associated with stress environmental adaptation and innate immunity responses exhibited signatures of positive selection. In summary, we established the first draft genome of the mandrill of value for studies on evolution and human health.
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Affiliation(s)
- Ye Yin
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Copenhagen, 2100, Denmark.
- BGI-Shenzhen, Shenzhen, 518083, China.
| | - Ting Yang
- BGI-Shenzhen, Shenzhen, 518083, China
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kgs., Lyngby, Denmark
| | - Huan Liu
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Copenhagen, 2100, Denmark
- BGI-Shenzhen, Shenzhen, 518083, China
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, 518083, China
| | - Ziheng Huang
- BGI-Shenzhen, Shenzhen, 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, 518120, China
| | - Yaolei Zhang
- BGI-Shenzhen, Shenzhen, 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, 518120, China
| | - Yue Song
- BGI-Shenzhen, Shenzhen, 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, 518120, China
| | - Wenliang Wang
- BGI-Shenzhen, Shenzhen, 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, 518120, China
| | | | - Sunil Kumar Sahu
- BGI-Shenzhen, Shenzhen, 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen, 518120, China
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, 518083, China
| | - Karsten Kristiansen
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Copenhagen, 2100, Denmark.
- BGI-Shenzhen, Shenzhen, 518083, China.
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Chapin J, Giardina PJ. Thalassemia Syndromes. Hematology 2018. [DOI: 10.1016/b978-0-323-35762-3.00040-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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Abstract
It is common knowledge that thalassemic patients are under significant oxidative stress. Chronic hemolysis, frequent blood transfusion, and increased intestinal absorption of iron are the main factors that result in iron overload with its subsequent pathophysiologic complications. Iron overload frequently associates with the generation of redox-reactive labile iron, which in turn promotes the production of other reactive oxygen species (ROS). If not neutralized, uncontrolled production of ROS often leads to damage of various intra- and extracellular components such as DNA, proteins, lipids, and small antioxidant molecules among others. A number of endogenous and exogenous defense mechanisms can neutralize and counteract the damaging effects of labile iron and the reactive substances associated with it. Endogenous antioxidant enzymes, such as superoxide dismutase, catalase, glutathione peroxidase, and ferroxidase, may directly or sequentially terminate the activities of ROS. Nonenzymatic endogenous defense mechanisms include metal binding proteins (ceruloplasmin, haptoglobin, albumin, and others) and endogenously produced free radical scavengers (glutathione (GSH), ubiquinols, and uric acid). Exogenous agents that are known to function as antioxidants (vitamins C and E, selenium, and zinc) are mostly diet-derived. In this review, we explore recent findings related to various antioxidative mechanisms operative in thalassemic patients with special emphasis on protein antioxidants.
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Affiliation(s)
- Samir Awadallah
- Department of Medical Laboratory Sciences, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates.
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Abstract
Haptoglobin types were determined in 626 individuals living in the State of São Paulo (Brazil). Of these, 484 had Hb AA, 31 major beta thalassemia, 43 minor beta thalassemia, 14 Hb SS, and 54 Hb AS. Frequency distribution of the three most common types observed among patients with type beta thalassemia differed significantly from that observed in the Caucasian group with Hb AA. There was a significant increase in Hp 1-1, which led us to assume that these disorders participate in a selective process acting on haptoglobins and altering the equilibrium of their frequencies. This relationship was not observed when we compared patients with Hb SS and Hb AS with Black patients with Hb AA, although the type most often observed among patients with Hb SS was Hp 1-1. The distributions of Hp groups observed among Caucasian and Black patients with Hb AA were similar to those obtained by other investigators for the South and Southeast regions of Brazil, with the exception of Rio de Janeiro.
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Affiliation(s)
- H W Moreira
- Departamento de Análises Clínicas, Faculdade de Ciências Farmacêuticas de Araraquara--UN-ESP, S. Paulo, Brazil
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Habib Z, Eiberg H. Determination of common haptoglobin phenotypes in Egyptians and Danes by means of non-carcinogenic stain reagents. Hereditas 2008; 98:219-23. [PMID: 6192111 DOI: 10.1111/j.1601-5223.1983.tb00597.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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Atzeni E, Binaghi F, Pitzus F. Haemopexin behaviour in an acute hyperhaemolytic crisis secondary to favism (erythrocyte glucose-6-phosphate dehydrogenase deficiency). LA RICERCA IN CLINICA E IN LABORATORIO 1977; 7:39-43. [PMID: 866908 DOI: 10.1007/bf02886601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The behaviour of serum haemopexin was studied in patients with hyperhaemolysis after ingestion of fava beans. The linear increase in this substance after a crisis is particularly emphasized. This finding is of special importance for G-6-PD subjects with various haematological disorders.
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