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Silva AA, Catarino SJ, Boldt ABW, Pedroso MLA, Beltrame MH, Messias-Reason IJ. Effects of MASP2 haplotypes and MASP-2 levels in hepatitis C-infected patients. Int J Immunogenet 2018; 45:118-127. [PMID: 29675993 DOI: 10.1111/iji.12371] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 02/15/2018] [Accepted: 03/22/2018] [Indexed: 01/01/2023]
Abstract
Mannan-binding lectin (MBL) and MBL-associated serine protease 2 (MASP-2) are components of the lectin pathway, which activate the complement system after binding to the HCV structural proteins E1 and E2. We haplotyped 11 MASP2 polymorphisms in 103 HCV patients and 205 controls and measured MASP-2 levels in 67 HCV patients and 77 controls to better understand the role of MASP-2 in hepatitis C susceptibility and disease severity according to viral genotype and fibrosis levels. The haplotype block MASP2*ARDP was associated with protection against HCV infection (OR = 0.49, p = .044) and lower MASP-2 levels in controls (p = .021), while haplotype block AGTDVRC was significantly increased in patients (OR = 7.58, p = .003). MASP-2 levels were lower in patients than in controls (p < .001) and in patients with viral genotype 1 or 4 (poor responders to treatment) than genotype 3 (p = .022) and correlated inversely with the levels of alkaline phosphatase, especially in individuals with fibrosis 3 or 4 (R = -.7, p = .005). MASP2 gene polymorphisms modulate basal gene expression, which may influence the quality of complement response against HCV. MASP-2 levels decrease during chronic disease, independently of MASP2 genotypes, most probably due to consumption and attenuation mechanisms of viral origin and by the reduced liver function, the site of MASP-2 production.
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Affiliation(s)
- Amanda A Silva
- Departamento de Patologia Médica, Hospital de Clínicas, Laboratório de Imunopatologia Molecular, Universidade Federal do Paraná, Curitiba, Brazil
| | - Sandra J Catarino
- Departamento de Patologia Médica, Hospital de Clínicas, Laboratório de Imunopatologia Molecular, Universidade Federal do Paraná, Curitiba, Brazil
| | - Angelica B W Boldt
- Laboratório de Genética Molecular Humana, Universidade Federal do Paraná, Curitiba, Brazil
| | - Maria Lucia A Pedroso
- Departamento de Clínica Médica, Hospital de Clínicas, Serviço de Hepatologia, Universidade Federal do Paraná, Curitiba, Brazil
| | - Marcia H Beltrame
- Laboratório de Genética Molecular Humana, Universidade Federal do Paraná, Curitiba, Brazil
| | - Iara J Messias-Reason
- Departamento de Patologia Médica, Hospital de Clínicas, Laboratório de Imunopatologia Molecular, Universidade Federal do Paraná, Curitiba, Brazil
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Auriti C, Prencipe G, Moriondo M, Bersani I, Bertaina C, Mondì V, Inglese R. Mannose-Binding Lectin: Biologic Characteristics and Role in the Susceptibility to Infections and Ischemia-Reperfusion Related Injury in Critically Ill Neonates. J Immunol Res 2017; 2017:7045630. [PMID: 28246614 DOI: 10.1155/2017/7045630] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 11/08/2016] [Accepted: 12/28/2016] [Indexed: 01/14/2023] Open
Abstract
The mannose-binding lectin (MBL) is a member of the collectin family, belonging to the innate immunity system. Genetic, biologic, and clinical properties of MBL have been widely investigated throughout the last decades, although some interesting aspects of its potential clinical relevance are still poorly understood. Low circulating concentrations of MBL have been associated with increased risk of infection and poor neurologic outcome in neonates. On the other hand, an excessive and uncontrolled inflammatory response by the neonatal intestine after the exposure to luminal bacteria, leading to an increased production of MBL, may be involved in the onset of necrotizing enterocolitis. The purpose of the present review is to summarize the current knowledge about genetic and biologic characteristics of MBL and its role in the susceptibility to infections and to ischemia-reperfusion related tissue injuries to better explore its clinical relevance during the perinatal period and the possible future therapeutic applications.
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Beltrame MH, Boldt ABW, Catarino SJ, Mendes HC, Boschmann SE, Goeldner I, Messias-Reason I. MBL-associated serine proteases (MASPs) and infectious diseases. Mol Immunol 2015; 67:85-100. [PMID: 25862418 PMCID: PMC7112674 DOI: 10.1016/j.molimm.2015.03.245] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/11/2015] [Accepted: 03/12/2015] [Indexed: 12/16/2022]
Abstract
MASP-1 and MASP-2 are central players of the lectin pathway of complement. MASP1 and MASP2 gene polymorphisms regulate protein serum levels and activity. MASP deficiencies are associated with increased infection susceptibility. MASP polymorphisms and serum levels are associated with disease progression.
The lectin pathway of the complement system has a pivotal role in the defense against infectious organisms. After binding of mannan-binding lectin (MBL), ficolins or collectin 11 to carbohydrates or acetylated residues on pathogen surfaces, dimers of MBL-associated serine proteases 1 and 2 (MASP-1 and MASP-2) activate a proteolytic cascade, which culminates in the formation of the membrane attack complex and pathogen lysis. Alternative splicing of the pre-mRNA encoding MASP-1 results in two other products, MASP-3 and MAp44, which regulate activation of the cascade. A similar mechanism allows the gene encoding MASP-2 to produce the truncated MAp19 protein. Polymorphisms in MASP1 and MASP2 genes are associated with protein serum levels and functional activity. Since the first report of a MASP deficiency in 2003, deficiencies in lectin pathway proteins have been associated with recurrent infections and several polymorphisms were associated with the susceptibility or protection to infectious diseases. In this review, we summarize the findings on the role of MASP polymorphisms and serum levels in bacterial, viral and protozoan infectious diseases.
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Affiliation(s)
- Marcia H Beltrame
- Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
| | - Angelica B W Boldt
- Department of Genetics, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Sandra J Catarino
- Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
| | - Hellen C Mendes
- Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
| | - Stefanie E Boschmann
- Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
| | - Isabela Goeldner
- Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil
| | - Iara Messias-Reason
- Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil.
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Abstract
Cardiovascular disease remains the leading cause of mortality and morbidity worldwide so research continues into underlying mechanisms. Since innate immunity and its potent component mannan-binding lectin have been proven to play an important role in the inflammatory response during infection and ischaemia-reperfusion injury, attention has been paid to its role in the development of cardiovascular complications as well. This review provides a general outline of the structure and genetic polymorphism of MBL and its role in inflammation/tissue injury with emphasis on associations with cardiovascular disease. MBL appears to be involved in the pathogenesis of atherosclerosis and, in consequence, coronary artery disease and also inflammation and tissue injury after myocardial infarction and heart transplantation. The relationship between MBL and disease is rather complex and depends on different genetic and environmental factors. That could be why the data obtained from animal and clinical studies are sometimes contradictory proving not for the first time that innate immunity is a "double-edge sword," sometimes beneficial and, at other times disastrous for the host.
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Affiliation(s)
- Izabela Pągowska-Klimek
- Department of Anesthesiology and Intensive Care, Polish Mother's Memorial Hospital Institute, Rzgowska 281/289, 93-338 Łódź, Poland
| | - Maciej Cedzyński
- Laboratory of Immunobiology of Infections, Institute of Medical Biology, Polish Academy of Sciences, Lodowa 106, 93-232 Łódź, Poland
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Wu X, Wan Q, Ye Q, Zhou J. Mannose-binding lectin-2 and ficolin-2 gene polymorphisms and clinical risk factors for acute rejection in kidney transplantation. Transpl Immunol 2014; 30:71-5. [PMID: 24486561 DOI: 10.1016/j.trim.2013.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 10/02/2013] [Accepted: 10/02/2013] [Indexed: 12/18/2022]
Abstract
INTRODUCTION There is growing evidence that the lectin pathway is significantly associated with acute rejection. Rare studies associated both gene polymorphisms of MBL2 and FCN2 with acute rejection after kidney transplantation. The aim of the present study was to investigate the role of the lectin gene profile and clinical risk factors such as PRA level on acute rejection in kidney transplant recipients. METHODS We prospectively analyzed 157 kidney transplant recipients with and without acute rejection. A total of 6 well-known functional single-nucleotide polymorphisms in the MBL2 gene and 5 in the FCN2 gene of the recipients were determined by gene sequencing. MBL2 and FCN2 genotypic variants were analyzed for association with the incidence of acute rejection within the first year after kidney transplantation. RESULTS After adjusting for variables of P<0.2, we found the differences in the incidence of acute rejection were only according to panel-reactive antibodies (odds ratios (OR) = 6.468, 95% confidence intervals (CI)= 2.017-20.740, P = 0.002) and the HH genotypes of MBL2 promoter -550 (OR = 2.448, 95%CI = 1.026-5.839, P = 0.044). CONCLUSION Panel-reactive antibodies and the HH genotypes of MBL2 promoter -550 have significant impacts on the risk of developing acute rejection after kidney transplantation.
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Affiliation(s)
- Xiaoxia Wu
- Nursing Department, the Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China
| | - Qiquan Wan
- Department of Transplant Surgery, the Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China.
| | - Qifa Ye
- Department of Transplant Surgery, the Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China
| | - Jiandang Zhou
- Department of Clinical Laboratory of Microbiology, the Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China
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Abdelaal A, Mossad N, Abdel Hafez H, Elsayed N. Mannose-binding lectin exon 1 polymorphisms in Egyptian patients with chronic hepatitis C virus infection. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s00580-013-1786-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Eurich D, Boas-Knoop S, Struecker B, Neuhaus R, Neuhaus P, Bahra M. Genetic variants of STAT-4 affect the development of graft fibrosis after liver transplantation for HCV-induced liver disease. Transplantation. 2013;95:203-208. [PMID: 23202532 DOI: 10.1097/TP.0b013e318277e2f6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Hepatitis C virus (HCV) reinfection after liver transplantation may lead to recirrhosis and seems to be influenced by genetic factors. The aim of our study was to evaluate the role of STAT-4-polymorphisms in the development of HCV-related graft disease based on protocol biopsies. METHODS One hundred sixty transplant patients with HCV recurrence were genotyped for STAT-4 (rs7574865) by polymerase chain reaction. Fibrosis stages were determined based on Desmet and Scheuer classification. SPSS was used for the statistical analysis of genotype distribution and of time to the development of advanced fibrosis among the genotypes. RESULTS During a comparable observation period of 86.2 months (P=0.654), 65 patients (46.5%) developed advanced fibrosis. Advanced fibrosis was observed significantly more frequent in patients (n=34) with at least one T-allele (53.1 vs. 32.3%; P=0.013) compared with homozygotes for G-allele (n=31). Significant differences in the duration of advanced fibrosis development were detected between patients with at least one T-allele compared with G-allele (34.4 vs. 49.0 months; P=0.022). No impact was observed regarding the outcome of interferon-based antiviral treatment (P=0.297) and the occurrence of acute cellular rejection (P=0.365). CONCLUSION Present results indicate a possible impact of genetic confounders in the recipient on graft fibrogenesis, thus explaining significantly different graft behavior observed after transplantation for HCV-associated liver disease. STAT-4-T-allele is identified as fibrogenic factor and seems to have a negative impact on HCV-induced fibrosis development.
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Abstract
PURPOSE OF REVIEW Chronic renal allograft damage is one of the main problems after kidney transplantation. This review enumerates causes, describes available therapeutic options, and discusses options of the future. RECENT FINDINGS Alloantigen-dependent and alloantigen-independent factors are responsible for allograft damage. Prevention of renal allograft damage starts with interventions that occur surrounding the explantation in cadaveric organs. These include the use of dopamine or machine perfusion systems.Followed by the critical phase of ischemia/reperfusion injury, the LCN2/lipocalin-2, HAVCR1, and p38 MAPK pathway are new players involved in that process. Innate immunity plays a part, too. Cold ischemia time is associated with genes of apoptosis. Nondonor-specific antibodies like antihuman leukocyte antibodies-Ia or angiotensin type 1 receptor may also play a role. Recent research indicates that genetic polymorphism like the Ficolin-2 Ala258Ser polymorphism and the mannose-binding lectin-2 polymorphism are involved in that process. New therapeutic options are rare and in the future. However, there is some evidence that drugs interfering with metalloproteinases, sexual hormones like dihydroandrosterone, and mesenchymal stem cell therapy may be of importance. SUMMARY Taken together, although the understanding of chronic rejection has improved, the available therapeutic options remain scarce.
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Affiliation(s)
- Lutz Renders
- Department of Nephrology, Technical University of Munic, Munic, Germany.
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