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Pancaro A, Szymonik M, Perez Schmidt P, Erol G, Garcia Barrientos A, Polito L, Gobbi M, Duwé S, Hendrix J, Nelissen I. A Nanoplasmonic Assay for Point-of-Care Detection of Mannose-Binding Lectin in Human Serum. ACS APPLIED MATERIALS & INTERFACES 2024; 16:30556-30566. [PMID: 38806166 PMCID: PMC11181273 DOI: 10.1021/acsami.4c04018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 05/02/2024] [Accepted: 05/08/2024] [Indexed: 05/30/2024]
Abstract
Mannose-binding lectin (MBL) activates the complement system lectin pathway and subsequent inflammatory mechanisms. The incidence and outcome of many human diseases, such as brain ischemia and infections, are associated with and influenced by the activity and serum concentrations of MBL in body fluids. To quantify MBL levels, tests based on ELISA are used, requiring several incubation and washing steps and lengthy turnaround times. Here, we aimed to develop a nanoplasmonic assay for direct MBL detection in human serum at the point of care. Our assay is based on gold nanorods (GNRs) functionalized with mannose (Man-GNRs) via an amphiphilic linker. We experimentally determined the effective amount of sugar linked to the nanorods' surface, resulting in an approximate grafting density of 4 molecules per nm2, and an average number of 11 to 13 MBL molecules binding to a single nanoparticle. The optimal Man-GNRs concentration to achieve the highest sensitivity in MBL detection was 15 μg·mL-1. The specificity of the assay for MBL detection both in simple buffer and in complex pooled human sera was confirmed. Our label-free biosensor is able to detect MBL concentrations as low as 160 ng·mL-1 within 15 min directly in human serum via a one-step reaction and by using a microplate reader. Hence, it forms the basis for a fast, noninvasive, point-of-care assay for diagnostic indications and monitoring of disease and therapy.
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Affiliation(s)
- Alessia Pancaro
- Health
Unit, Flemish Institute for Technological
Research (VITO), Boeretang 200, Mol 2400, Belgium
- Dynamic
Bioimaging Lab, Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek 3590, Belgium
| | - Michal Szymonik
- Health
Unit, Flemish Institute for Technological
Research (VITO), Boeretang 200, Mol 2400, Belgium
| | - Patricia Perez Schmidt
- Istituto
di Scienze e Tecnologie Chimiche “Giulio Natta”, SCITEC−CNR,
G, Fantoli 16/15, Milan 20138, Italy
| | - Gizem Erol
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Mario Negri 2 20156, Milan, Italy
| | | | - Laura Polito
- Istituto
di Scienze e Tecnologie Chimiche “Giulio Natta”, SCITEC−CNR,
G, Fantoli 16/15, Milan 20138, Italy
| | - Marco Gobbi
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Mario Negri 2 20156, Milan, Italy
| | - Sam Duwé
- Advanced
Optical Microscopy Centre, Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek 3590, Belgium
| | - Jelle Hendrix
- Dynamic
Bioimaging Lab, Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek 3590, Belgium
- Advanced
Optical Microscopy Centre, Biomedical Research Institute, Hasselt University, Agoralaan C, Diepenbeek 3590, Belgium
| | - Inge Nelissen
- Health
Unit, Flemish Institute for Technological
Research (VITO), Boeretang 200, Mol 2400, Belgium
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Dias PB, Messias-Reason I, Hokazono K, Nisihara R. The role of mannose-binding lectin (MBL) in diabetic retinopathy: A scoping review. Immunol Lett 2024; 267:106863. [PMID: 38705482 DOI: 10.1016/j.imlet.2024.106863] [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: 03/18/2024] [Revised: 04/24/2024] [Accepted: 04/30/2024] [Indexed: 05/07/2024]
Abstract
Diabetes mellitus (DM) is a chronic systemic disease characterized by a multifactorial nature, which may lead to several macro and microvascular complications. Diabetic retinopathy (DR) is one of the most severe microvascular complications of DM, which can result in permanent blindness. The mechanisms involved in the pathogenesis of DR are multiple and still poorly understood. Factors such as dysregulation of vascular regeneration, oxidative and hyperosmolar stress in addition to inflammatory processes have been associated with the pathogenesis of DR. Furthermore, compelling evidence shows that components of the immune system, including the complement system, play a relevant role in the development of the disease. Studies suggest that high concentrations of mannose-binding lectin (MBL), an essential component of the complement lectin pathway, may contribute to the development of DR in patients with DM. This review provides an update on the possible role of the complement system, specifically the lectin pathway, in the pathogenesis of DR and discusses the potential of MBL as a non-invasive biomarker for both, the presence and severity of DR, in addition to its potential as a therapeutic target for intervention strategies.
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Affiliation(s)
- Paula Basso Dias
- Clinical Hospital, Federal University of Paraná, Curitiba, Brazil; Department of Ophthalmology, Clinical Hospital, Federal University of Paraná, Curitiba, Brazil
| | | | - Kenzo Hokazono
- Department of Ophthalmology, Clinical Hospital, Federal University of Paraná, Curitiba, Brazil
| | - Renato Nisihara
- Clinical Hospital, Federal University of Paraná, Curitiba, Brazil; Department of Medicine, Positivo University, Curitiba, Brazil.
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Behairy MY, Tawfik NZ, Eid RA, Nasser Binjawhar D, Alshaya DS, Fayad E, Elkhatib WF, Abdallah HY. Mannose-binding lectin gene polymorphism in psoriasis and vitiligo: an observational study and computational analysis. Front Med (Lausanne) 2024; 10:1340703. [PMID: 38404462 PMCID: PMC10885344 DOI: 10.3389/fmed.2023.1340703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 12/28/2023] [Indexed: 02/27/2024] Open
Abstract
Introduction Psoriasis and vitiligo are inflammatory autoimmune skin disorders with remarkable genetic involvement. Mannose-binding lectin (MBL) represents a significant immune molecule with one of its gene variants strongly linked to autoimmune diseases. Therefore, in this study, we investigated the role of the MBL variant, rs1800450, in psoriasis and vitiligo disease susceptibility. Methods The study comprised performing in silico analysis, performing an observational study regarding psoriasis patients, and performing an observational study regarding vitiligo patients. Various in silico tools were used to investigate the impact of the selected mutation on the function, stability, post-translational modifications (PTMs), and secondary structures of the protein. In addition, a total of 489 subjects were enrolled in this study, including their demographic and clinicopathological data. Genotyping analysis was performed using real-time PCR for the single nucleotide polymorphism (SNP) rs1800450 on codon 54 of the MBL gene, utilizing TaqMan genotyping technology. In addition, implications of the studied variant on disease susceptibility and various clinicopathological data were analyzed. Results Computational analysis demonstrated the anticipated effects of the mutation on MBL protein. Furthermore, regarding the observational studies, rs1800450 SNP on codon 54 displayed comparable results in our population relative to global frequencies reported via the 1,000 Genomes Project. This SNP showed no significant association with either psoriasis or vitiligo disease risk in all genetic association models. Furthermore, rs1800450 SNP did not significantly correlate with any of the demographic or clinicopathological features of both psoriasis and vitiligo. Discussion Our findings highlighted that the rs1800450 SNP on the MBL2 gene has no role in the disease susceptibility to autoimmune skin diseases, such as psoriasis and vitiligo, among Egyptian patients. In addition, our analysis advocated the notion of the redundancy of MBL and revealed the lack of significant impact on both psoriasis and vitiligo disorders.
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Affiliation(s)
- Mohammed Y. Behairy
- Department of Microbiology and Immunology, Faculty of Pharmacy, University of Sadat City, Sadat City, Egypt
| | - Noha Z. Tawfik
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Refaat A. Eid
- Pathology Department, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Dalal Nasser Binjawhar
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Dalal Sulaiman Alshaya
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Eman Fayad
- Department of Biotechnology, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Walid F. Elkhatib
- Microbiology and Immunology Department, Faculty of Pharmacy, Ain Shams University, African Union Organization St., Abbassia, Cairo, Egypt
- Department of Microbiology and Immunology, Faculty of Pharmacy, Galala University, Suez, Egypt
| | - Hoda Y. Abdallah
- Department of Histology and Cell Biology (Genetics Unit), Faculty of Medicine, Suez Canal University, Ismailia, Egypt
- Center of Excellence in Molecular and Cellular Medicine, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
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MBL2 gene polymorphisms related to HIV-1 infection susceptibility and treatment response. Hum Immunol 2023; 84:80-88. [PMID: 36257838 DOI: 10.1016/j.humimm.2022.09.007] [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: 05/26/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 11/04/2022]
Abstract
Human Mannose-binding lectin (MBL) is a protein encoded by MBL2 gene involved in the activation of the lectin-complement pathway. Several studies emphasized the role of MBL2 gene in several infectious diseases' susceptibility, including HIV-1 infection. We aim to investigate the impact of 10 MBL2 gene polymorphisms located in the promoter, 5'UTR and exon 1 regions on HIV-1 physiopathology. The polymorphisms genotyping of 400 individuals, which 200 were HIV-1 positive patients and 200 were controls, was performed by PCR-sequencing. Our results showed that rs503037 and rs1800451 polymorphisms are associated with a high risk of HIV-1 infection susceptibility while rs7096206 and rs11003123 showed a protective effect. A significant association between haplotype CGA and HIV-1 infection susceptibility was also found in the exon 1 region. Moreover, rs11003124, rs7084554, rs36014597 and rs11003123 polymorphisms revealed an association with treatment response outcome as measured by RNA viral load. This study highlights the importance of MBL2 polymorphisms in the modulation of HIV-1 infection susceptibility and the contribution to treatment response outcomes among Moroccan subjects.
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Xu J, Suo L, Zhao J, Cai T, Mei N, Du P, Gao C, Fang Y, Jiang Y, Zhang JA. MBL2 polymorphism may be a protective factor of autoimmune thyroid disease susceptibility. Mol Genet Genomics 2023; 298:95-105. [PMID: 36318338 DOI: 10.1007/s00438-022-01960-9] [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: 03/02/2022] [Accepted: 09/28/2022] [Indexed: 01/07/2023]
Abstract
Genetic susceptibility is an essential pathogenetic mechanism in autoimmune thyroid disease (AITD). MBL2 gene polymorphisms have been shown to play a vital role in the pathogenesis of multiple autoimmune disorders, but its contribution to AITD is unclear. The aim of this study was to assess the linkage between MBL2 gene polymorphisms and AITD susceptibility in a Chinese Han population. One thousand seven hundred sixty seven subjects consisting of 965 AITD patients and 802 controls from a Chinese Han population were enrolled in the case-control study. Four common single-nucleotide polymorphisms (SNPs) in the MBL2 gene were tested using high-throughput sequencing technology for sequence-based SNP genotyping. The allele and genotype distribution results showed that the minor alleles of rs198266, rs10824793, and rs4935046 were significantly lower in Hashimoto's thyroiditis (HT) patients than in healthy controls. In further genetic model analysis, the dominant models of rs1982266, rs10824793, and rs4935046 for MBL2 in the AITD group exhibited a lower risk of morbidity. Finally, we discovered that haplotype AAGC was associated with Graves' disease (GD), while AGC was associated with HT. Our study provides strong evidence for a genetic correlation between MBL2 and AITD, and the polymorphism of the MBL2 gene may be a protective factor for AITD, especially for HT. These findings can advance our understanding of the etiology of AITD, as well as provide guidance for prevention and intervention toward AITD.
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Affiliation(s)
- Jianbin Xu
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Lixia Suo
- Department of Endocrinology, Jiading District Central Hospital Affiliated Shanghai University of Medicine and Health Sciences, Shanghai, 201899, China
| | - Jing Zhao
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Tiantian Cai
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Na Mei
- Department of Rehabilitation, Tongde Hospital of Zhejiang Province, Hangzhou, 310012, Zhejiang, China
| | - Peng Du
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Chaoqun Gao
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Yudie Fang
- Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China
| | - Yanfei Jiang
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China.
| | - Jin-An Zhang
- Department of Endocrinology and Rheumatology, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, No. 1500 Zhouyuan Road, Pudong District, Shanghai, 201318, China.
- Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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Izakovicova P, Slezakova S, Jiraskova Zakostelska Z, Sistkova J, Mlcuchova N, Bartova J, Petanova J, Kuklinek P, Fassmann A, Dusek L, Izakovicova Holla L, Borilova Linhartova P. Gene polymorphisms and serum levels of mannose-binding lectin in Czech patients with recurrent aphthous stomatitis: A case-control study. J Oral Pathol Med 2023; 52:81-90. [PMID: 36371667 DOI: 10.1111/jop.13385] [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: 05/23/2022] [Revised: 09/08/2022] [Accepted: 11/09/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND Recurrent aphthous stomatitis is one of the most prevalent oral mucosal immunological diseases. A recent case-control study in the Egyptian population suggested that single nucleotide polymorphism Gly54Asp (rs1800450) of the mannose-binding lectin 2 gene might affect the mannose-binding lectin serum level and recurrent aphthous stomatitis development. The aim of this study was to determine the distribution of six functional mannose-binding lectin 2 gene polymorphisms and analyse their role in recurrent aphthous stomatitis susceptibility in the Czech population. METHODS The study included 227 subjects; 137 healthy people and 90 patients with recurrent aphthous stomatitis. Six mannose-binding lectin 2 gene polymorphisms (rs11003125, rs7096206, rs7095891, rs5030737, rs1800450, rs1800451) were analysed by the SNaPshot assay method, mannose-binding lectin serum levels were determined by enzyme-linked immunosorbent assay (ELISA) method in a subgroup of subjects (N = 87). RESULTS No significant differences in mean of mannose-binding lectin serum levels between healthy controls and patients with recurrent aphthous stomatitis were observed (383 ng/ml ± 249 standard deviation (SD) vs. 316 ng/ml ± 177 SD in remission phase vs. 343 ng/ml ± 254 SD in active phase; p > 0.05), also the allele and genotype frequencies of the studied mannose-binding lectin 2 polymorphisms did not differ significantly between the two groups (p > 0.05, odds ratio (OR): 0.75-1.23). Moreover, the distribution of mannose-binding lectin 2 haplotypes and haplogenotypes was similar in the healthy subjects and patients with recurrent aphthous stomatitis (p > 0.05, OR: 0.75-1.23). CONCLUSIONS This study did not confirm the previously reported association of the mannose-binding lectin 2 Gly54Asp gene variant and low mannose-binding lectin serum level as the risk factors for susceptibility to recurrent aphthous stomatitis. In addition, no significant relationships between mannose-binding lectin 2 functional haplotypes or haplogenotypes and recurrent aphthous stomatitis were observed.
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Affiliation(s)
| | - Simona Slezakova
- Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,Czech National Centre for Evidence-Based Healthcare and Knowledge Translation (Cochrane Czech Republic, Czech EBHC: JBI Centre of Excellence, Masaryk University GRADE Centre), Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | | | - Jana Sistkova
- Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,Clinic of Stomatology, Institution Shared with St. Anne's University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Natalie Mlcuchova
- RECETOX, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jirina Bartova
- Department of Stomatology, General University Hospital in Prague and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jitka Petanova
- Institute of Immunology and Microbiology, General University Hospital in Prague and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Pavel Kuklinek
- Department of Clinical Immunology and Allergology, Institution Shared with St. Anne's Faculty Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Antonin Fassmann
- Clinic of Stomatology, Institution Shared with St. Anne's University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Ladislav Dusek
- Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Lydie Izakovicova Holla
- Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,Clinic of Stomatology, Institution Shared with St. Anne's University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Petra Borilova Linhartova
- Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,Clinic of Stomatology, Institution Shared with St. Anne's University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,RECETOX, Faculty of Science, Masaryk University, Brno, Czech Republic.,Clinic of Maxillofacial Surgery, Institution Shared with University Hospital Brno, Faculty of Medicine, Masaryk University, Brno, Czech Republic
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7
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Navigating diagnostic options for inborn errors of immunity in children: a case-based illustration. Curr Opin Pediatr 2022; 34:589-594. [PMID: 36081368 DOI: 10.1097/mop.0000000000001178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
PURPOSE OF REVIEW In recent years, there has been a dramatic increase in the number of recognized inborn errors of immunity (IEI), many of which present in childhood. This review discusses diagnostic approaches for some of the more common presentations of IEI in childhood. RECENT FINDINGS Implementation of newborn screening (NBS) using the T cell receptor excision circle (TREC) assay has led to the timely identification of patients with severe combined immunodeficiency (SCID) as well as both syndromic and nonsyndromic forms of T cell lymphopenia, including DiGeorge syndrome. Improvements in the availability of immunophenotyping assays, genetic testing and advanced diagnostic techniques such as the artificial thymic organoid system can improve diagnostic clarity and impact management plans. Diagnostic improvements in humoral immunodeficiency include development of novel assays to quantify and functionally evaluate polysaccharide vaccine response. SUMMARY IEI represent a rapidly growing field, particularly in paediatrics. Use of state-of-the-art diagnostic testing can facilitate rapid identification of IEI, hopefully allowing for initiation of prompt treatment and improved patient outcomes.
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Ruffles T, Basu K, Inglis SK, Bremner S, Rabe H, Memon A, Seddon P, Tavendale R, Palmer CNA, Mukhopadhyay S, Fidler K. Mannose-binding lectin genotype is associated with respiratory disease in young children: A multicenter cohort study. Pediatr Pulmonol 2022; 57:2824-2833. [PMID: 35949104 DOI: 10.1002/ppul.26109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/02/2022] [Accepted: 08/09/2022] [Indexed: 11/12/2022]
Abstract
BACKGROUND Mannose-binding lectin (MBL) is an important component of the innate immune system. Polymorphisms in the MBL2 gene and promoter region are directly associated with MBL-deficiency. We sought to determine the association between MBL genotype on the frequency of common childhood respiratory infections, respiratory symptoms, and atopic outcomes in early childhood. METHODS MBL2 gene variants were analyzed in newborns recruited to the GO-CHILD multicenter prospective cohort study. Follow-up for respiratory infection and atopy diagnoses and symptoms, healthcare utilization, and medication prescription were conducted by postal questionnaires at 12 and 24 months. RESULTS Genotyping and follow-up were completed in 1004 children. Genotypes associated with MBL-deficiency were associated with an increased risk of bronchiolitis (relative risk [RR] 1.95, 95% confidence interval [CI] 1.33-2.85) and pneumonia (RR 2.46, 95% CI 1.16-5.22). MBL-deficient genotypes were associated with an increased risk of wheeze with shortness of breath episodes (RR 1.22, 95% CI 1.04-1.43), emergency department attendance (RR 1.90 95% CI 1.13-3.19), and hospital admission (RR 2.01, 95% CI 1.04-3.89) for wheeze. MBL-deficient genotypes were associated with a reduced risk of developing atopic dermatitis (RR 0.72, 95% CI 0.53-0.98). CONCLUSION The positive association between MBL-deficient genotypes and bronchiolitis and pneumonia, as well as a severe wheeze phenotype in some young children, supports the hypothesis that MBL is an important component of innate immunity in the vulnerable period before the maturation of the adaptive immune system. Identification of disease-modifying genotypes may help target preventative strategies in high-risk infants.
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Affiliation(s)
- Tom Ruffles
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
| | - Kaninika Basu
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Sarah K Inglis
- Tayside Clinical Trials Unit, University of Dundee, Dundee, UK
| | - Stephen Bremner
- Department of Primary Care and Public Health, Brighton and Sussex Medical School, Brighton, UK
| | - Heike Rabe
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
| | - Anjum Memon
- Department of Primary Care and Public Health, Brighton and Sussex Medical School, Brighton, UK
| | - Paul Seddon
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
| | - Roger Tavendale
- Biomedical Research Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Colin N A Palmer
- Pat McPherson Centre for Pharmacogenetics and Pharmacogenomics, School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Somnath Mukhopadhyay
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
| | - Katy Fidler
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, UK.,Brighton and Sussex Medical School, Brighton, UK
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9
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Szilágyi Á, Csuka D, Geier CB, Prohászka Z. Complement Genetics for the Practicing Allergist Immunologist: Focus on Complement Deficiencies. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2022; 10:1703-1711. [PMID: 35272074 DOI: 10.1016/j.jaip.2022.02.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/21/2022] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
Complement deficiencies have been considered to be rare for many decades, but this assumption is changing year by year. Recognition of these conditions significantly increases thanks to the availability of different testing approaches and due to clinical awareness. Furthermore, sequencing technologies (including Sanger sequencing, targeted gene panels, and whole exome/genome sequencing) may facilitate the identification of the underlying disease-causing genetic background. On the other hand, functional characterization of the identified possibly pathogenic variations and performing family studies, as illustrated by some of our cases, remain similarly important to establish a precise clinical diagnosis facilitating the most appropriate management. Here, we present 4 illustrative cases with complement deficiencies of diverse etiologies and also provide an educative, step-by-step description on how to identify the underlying cause of complement deficiency based on the results of complement laboratory testing.
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Affiliation(s)
- Ágnes Szilágyi
- Department of Internal Medicine and Haematology, Semmelweis University, Budapest, Hungary
| | - Dorottya Csuka
- Department of Internal Medicine and Haematology, Semmelweis University, Budapest, Hungary
| | - Christoph B Geier
- Department of Rheumatology and Clinical Immunology, University Medical Center Freiburg, Freiburg, Germany; Center for Chronic Immunodeficiency (CCI), University Medical Center Freiburg, Freiburg, Germany
| | - Zoltán Prohászka
- Department of Internal Medicine and Haematology, Semmelweis University, Budapest, Hungary; Research Group for Immunology and Haematology, Semmelweis University-Eötvös Loránd Research Network (Office for Supported Research Groups), Budapest, Hungary.
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10
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Li JY, Chen XP, Tie YQ, Sun XL, Zhang RQ, He AN, Nie MZ, Fan GH, Li FY, Tian FY, Shen XX, Feng ZS, Ma XJ. Detection of low-load Epstein-Barr virus in blood samples by enriched recombinase aided amplification assay. AMB Express 2022; 12:71. [PMID: 35689713 PMCID: PMC9188631 DOI: 10.1186/s13568-022-01415-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 06/03/2022] [Indexed: 11/10/2022] Open
Abstract
Epstein-Barr virus (EBV), a common human γ-herpesvirus, infects more than 90% of adults worldwide. The purpose of this study was to establish a novel EBV detection method by combining the recombinase aided amplification (RAA) assay with an initial enrichment step that utilizes magnetic beads coated with a recombinant human mannan-binding lectin (rhMBL, M1 protein). An M1 protein–protein A magnetic bead complex (M1 beads) was prepared and used to achieve separation and enrichment of EBV from blood. After nucleic acid extraction, DNA was amplified by RAA. Using 388 whole blood samples and 1 serum sample, we explored the specificity, sensitivity and applicability of the newly developed detection method and compared it with commercial quantitative real-time polymerase chain reaction (qPCR) following M1 bead enrichment, traditional qPCR and traditional RAA. After enrichment, the positivity rate of EBV was increased from 15.94% to 17.74% by RAA (P < 0.05) and from 7.20% to 15.17% by qPCR (P < 0.05). The viral loads after enrichment were increased by 1.13 to 23.19-fold (P < 0.05). Our data demonstrates that an RAA assay incorporating M1 bead enrichment is a promising tool for detecting low EBV viral loads in blood samples that will facilitate an early response to EBV infection. The RAA with an enrichment step that utilizes magnetic beads coated with M1 protein. A very effective method for detecting low-load virus in blood samples. The first report describing virus detection using this method.
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Affiliation(s)
- Jing-Yi Li
- Hebei Medical University, No. 361 East Zhongshan Road, Shijiazhuang, 050031, Hebei, China.,Hebei General Hospital, No. 348 West Heping Road, Shijiazhuang, 050070, Hebei, China.,NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China
| | - Xiao-Ping Chen
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China
| | - Yan-Qing Tie
- Hebei Medical University, No. 361 East Zhongshan Road, Shijiazhuang, 050031, Hebei, China.,Hebei General Hospital, No. 348 West Heping Road, Shijiazhuang, 050070, Hebei, China
| | - Xiu-Li Sun
- Hebei General Hospital, No. 348 West Heping Road, Shijiazhuang, 050070, Hebei, China.,NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China.,North China University of Science and Technology, No. 46 West Xinhua Road, Tangshan, 063009, Hebei, China
| | - Rui-Qing Zhang
- NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China
| | - An-Na He
- NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China.,North China University of Science and Technology, No. 46 West Xinhua Road, Tangshan, 063009, Hebei, China
| | - Ming-Zhu Nie
- Hebei Medical University, No. 361 East Zhongshan Road, Shijiazhuang, 050031, Hebei, China.,Hebei General Hospital, No. 348 West Heping Road, Shijiazhuang, 050070, Hebei, China.,NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China
| | - Guo-Hao Fan
- NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China
| | - Feng-Yu Li
- Hebei Medical University, No. 361 East Zhongshan Road, Shijiazhuang, 050031, Hebei, China.,Hebei General Hospital, No. 348 West Heping Road, Shijiazhuang, 050070, Hebei, China.,NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China
| | - Feng-Yu Tian
- Hebei Medical University, No. 361 East Zhongshan Road, Shijiazhuang, 050031, Hebei, China.,Hebei General Hospital, No. 348 West Heping Road, Shijiazhuang, 050070, Hebei, China.,NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China
| | - Xin-Xin Shen
- NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China.
| | - Zhi-Shan Feng
- Hebei Medical University, No. 361 East Zhongshan Road, Shijiazhuang, 050031, Hebei, China. .,Hebei General Hospital, No. 348 West Heping Road, Shijiazhuang, 050070, Hebei, China.
| | - Xue-Jun Ma
- NHC Key Laboratory of Medical Virology and Viral Diseases, Chinese Center for Disease Control and Prevention, National Institute for Viral Disease Control and Prevention, No. 155, Changbai Street, Changping District, Beijing, 102206, China.
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11
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Smolnikova MV, Tereshchenko SY. Proteins of the lectin pathway of the complement system activation: immunobiological functions, genetics and involvement in the pathogenesis of human diseases. RUSSIAN JOURNAL OF INFECTION AND IMMUNITY 2022. [DOI: 10.15789/2220-7619-pot-1777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The complement system is the most ancient components in the innate immunity, mainly functioning to primarily eliminate bacterial agents intravascularly. Moreover, the complement complex proteins play a role as a bridge between the systems of innate and adaptive immunity providing adequate conditions for maturation and differentiation of B- and T-lymphocytes. The complement system consists of plasma proteins and membrane receptors. Plasma proteins interact with each other via the three described cascade pathways lectin (which is most ancient phylogenetically), alternative and classical. Lectins are proteins comprising a separate superfamily of pattern-recognizing receptors able to sense molecules of oligo- and polysaccharide nature and induce their aggregation. Among all the lectins, ficolins (FCN) (common domain fibrinogen) and collectins (common domain collagen) mannose-binding lectin (MBL), hepatic and renal collectins have exert unique functions by complexing with carbohydrate components of microbial wall. Formation of a compound complex microbial wall polysaccharides + collectin/ficolin + specific mannose-binding lectin-associated serine proteases (MARP) results in the complement system activation, inflammatory reaction and bacterium elimination. Such scenario is proceeded along the lectin pathway compared to the two other pathways called classical and alternative. Examining a role of the complement system and congenital protein defects in the pathogenesis of various diseases is of topical interest because inborn deficiency of the complement components comprises at least 5% out of total primary immunodeficiency rate, whereas the aspects of their prevalence and pathogenesis remain unexplored. Relevance of investigating the complement system components for diverse populations is tremendous, taking into consideration accumulated evidence regarding an important role of the lectin pathway in viral infections. Lectins, the main proteins in the lectin pathway of the complement activation, are encoded by polymorphic genes, wherein single nucleotide polymorphisms (SNPs) result in altered protein conformation and expression, which, in turn, affects functionality and potential to respond to a pathogen. The distribution of the lectin polymorphic gene frequencies and their haplotypes displays extremely marked population differences. According to analyzing available data, population SNP frequencies including those associated with inborn deficiencies for components of the lectin pathway have been currently scarce or unexplored. hence, here we review major lectins and their functions, their functionally significant SNPs in diverse populations and their pathogenetic importance for host defense functions.
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12
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Vital WDS, Santos FJDA, Gonçalves MLF, Wyrepkowski CDC, Ramasawmy R, Furtado SDC. Influence of the presence of mannose-binding lectin polymorphisms on the occurrence of leishmaniasis: a systematic review and meta-analysis. An Bras Dermatol 2022; 97:298-306. [PMID: 35331599 PMCID: PMC9133304 DOI: 10.1016/j.abd.2021.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/31/2021] [Accepted: 08/03/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Leishmaniasis is caused by an intracellular protozoan of the Leishmania genus. Mannose-binding lectin (MBL) is a serum complement protein and recognizes lipoprotein antigens in protozoa and the bacterial plasma membrane. Nucleotide variants in the promoter region and exon 1 of the MBL gene can influence its expression or change its molecular structure. OBJECTIVE To evaluate, through a systematic review, case-control studies of the genetic association of variants in the MBL2 gene and the risk of developing leishmaniasis. METHODS This review carried out a search in PubMed, Science Direct, Cochrane Library, Scopus and Lilacs databases for case-control publications with six polymorphisms in the mannose-binding Lectin gene. The following strategy was used: P = Patients at risk of leishmaniasis; I = Presence of polymorphisms; C = Absence of polymorphisms; O = Occurrence of leishmaniasis. Four case/control studies consisting of 791 patients with leishmaniasis and 967 healthy subjects (Control) are included in this meta-analysis. The association of variants in the mannose-binding Lectin gene and leishmaniasis under the allelic genetic model, -550 (Hvs. L), -221 (X vs. Y), +4 (Q vs. P), CD52 (A vs. D), CD54 (A vs. B), CD57 (A vs. C) and A/O genotype (A vs. O) was evaluated. International Prospective Register of Systematic Reviews (PROSPERO): CRD42020201755. RESULTS The meta-analysis results for any allelic genetic model showed no significant association for the variants within the promoter, the untranslated region, and exon 1, as well as for the wild-type A allele and mutant allele O with leishmaniasis. STUDY LIMITATIONS Caution should be exercised when interpreting these results, as they are based on a few studies, which show divergent results when analyzed separately. CONCLUSIONS This meta-analysis showed a non-significant association between the rs11003125, rs7096206, rs7095891, rs5030737, rs1800450, and rs1800451 polymorphisms of the Mannose-binding Lectin gene and leishmaniasis in any allelic and heterogeneous evaluation.
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13
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Vece TJ, Popler J, Gower WA. Pediatric pulmonology 2020 year in review: Rare and diffuse lung disease. Pediatr Pulmonol 2022; 57:807-813. [PMID: 34964566 DOI: 10.1002/ppul.25807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/24/2021] [Accepted: 12/27/2021] [Indexed: 11/08/2022]
Abstract
Pediatric Pulmonology publishes original research, review articles, and case reports on topics related to a wide range of children's respiratory disorders. Here we review some of the most notable manuscripts published in 2020 in this journal on (1) children's interstitial lung disease (chILD), (2) congenital airway and lung anomalies, and (3) primary ciliary dyskinesia and other non-cystic fibrosis bronchiectasis. The articles reviewed are discussed in context with published works from other journals.
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Affiliation(s)
- Timothy J Vece
- Division of Pediatric Pulmonology and Program for Rare and Interstitial Lung Disease, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Jonathan Popler
- Children's Physician Group - Pulmonology, Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - William A Gower
- Division of Pediatric Pulmonology and Program for Rare and Interstitial Lung Disease, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
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14
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Liu M, Wang Q, Liu H, Yin C, Mijiti X, Anwaierjiang A, Wan K, Xu M, Li M, Nong S, Li G, Xiao H. Association of Mannose-Binding Lectin 2 Gene Polymorphism with Tuberculosis Based on Mycobacterium tuberculosis Lineages. Infect Drug Resist 2022; 15:1225-1234. [PMID: 35355619 PMCID: PMC8959721 DOI: 10.2147/idr.s344935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 01/25/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose Polymorphisms in MBL2 may contribute to the susceptibility to tuberculosis. The aim of the present study was to determine the associations of the polymorphisms of five loci (rs1800450, rs1800451, rs7096206, rs7095891, and rs11003125) in the MBL2 gene with susceptibility to tuberculosis and specific lineages of Mycobacterium tuberculosis causing tuberculosis in the Uyghur population of Xinjiang, China. Methods From January 2019 to January 2020, we enrolled 170 Uyghur tuberculosis patients as the case group and 147 Uyghur staff with no clinical symptoms as the control group from four designated tuberculosis hospitals in southern Xinjiang, China. The polymorphisms of five loci in MBL2 of human were detected by sequencing. Whole-genome sequencing was applied in 68 M. tuberculosis isolates from the case group and the data were used to perform genealogy analysis. Results The distributions of allele and genotype frequencies of five loci in MBL2 varied little between the case and control groups and varied little among the groups, including those infected with different lineages of M. tuberculosis and the control (except those of rs11003125), the P values were all >0.05. The distribution of alleles of rs11003125 was statistically different between patients infected with lineages 3 and 4 M. tuberculosis (χ2=7.037, P=0.008). The C allele and CC genotype of rs11003125 were found to be protective factors against lineage 4 infection when compared to lineage 3 (ORs were 0.190 and 0.158, respectively; 95% confidence intervals were 0.053~0.690 and 0.025~0.999, respectively). Conclusion Our results suggested that human’s susceptibility to tuberculosis is affected both by the host genetic polymorphisms and the lineage of the M. tuberculosis that people were exposed to. However, due to the limitation of the sample size in the present study, larger sample size and more rigorous design should be guaranteed in future studies.
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Affiliation(s)
- Mengwen Liu
- School of Public Health, Xinjiang Medical University, Urumqi, 830011, People’s Republic of China
| | - Quan Wang
- The Eighth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830001, People’s Republic of China
| | - Haican Liu
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, People’s Republic of China
| | - Chunjie Yin
- School of Public Health, Xinjiang Medical University, Urumqi, 830011, People’s Republic of China
| | - Xiaokaiti Mijiti
- The Eighth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830001, People’s Republic of China
| | - Aiketaguli Anwaierjiang
- School of Public Health, Xinjiang Medical University, Urumqi, 830011, People’s Republic of China
| | - Kanglin Wan
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, People’s Republic of China
| | - Miao Xu
- The Eighth Affiliated Hospital of Xinjiang Medical University, Urumqi, 830001, People’s Republic of China
| | - Machao Li
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, People’s Republic of China
| | - Siqin Nong
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, People’s Republic of China
| | - Guilian Li
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, People’s Republic of China
- Correspondence: Guilian Li; Hui Xiao, Email ;
| | - Hui Xiao
- School of Public Health, Xinjiang Medical University, Urumqi, 830011, People’s Republic of China
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15
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Role of MBL2 Polymorphisms in Sepsis and Survival: A Pilot Study and In Silico Analysis. Diagnostics (Basel) 2022; 12:diagnostics12020460. [PMID: 35204551 PMCID: PMC8871458 DOI: 10.3390/diagnostics12020460] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/06/2022] [Accepted: 02/07/2022] [Indexed: 01/09/2023] Open
Abstract
Sepsis is a serious infection-induced syndrome with serious ramifications, especially in intensive care units. Global concern motivated the investigation of the role of related genes’ polymorphism in predicting the liability to infection, sepsis, septic shock and survival. Among these genes is the gene encoding mannose-binding lectin (MBL), with its remarkable importance in the immune system. However, the previous studies showed conflicting results and ambiguity that urged us to engage with this issue in the Egyptian population. Prediction of functional and structural impacts of single nucleotide polymorphisms (SNPs) was done using in silico methods. A prospective observational study was conducted in intensive care units; one hundred and thirty patients were followed up. Genotyping was performed using real-time polymerase chain reaction (RT-PCR) technology. MBL SNPs showed a remarkable high frequency in our population, as well. No significant association was found between MBL2 genotypes and any of our analyses (sepsis, septic shock and survival). Only septic shock and age were independently associated with time of survival by Cox regression analysis. Our study may confirm the redundancy of MBL and the absence of significant impact on sepsis liability and mortality in adult patients.
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16
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Wattrang E, Sørensen Dalgaard T, Brødsgaard Kjaerup R, Naghizadeh M, Kabell S, Eriksson H, Söderlund R. Erysipelothrix rhusiopathiae-specific T-cell responses after experimental infection of chickens selectively bred for high and low serum levels of mannose-binding lectin. Vet Res 2022; 53:105. [PMID: 36510306 PMCID: PMC9743643 DOI: 10.1186/s13567-022-01126-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 11/14/2022] [Indexed: 12/14/2022] Open
Abstract
Erysipelas, caused by infection with Erysipelothrix rhusiopathiae (ER) is an important emerging disease in laying hens. We have earlier observed prominent mannose-binding lectin (MBL) acute phase responses in experimentally ER infected chickens. The present study aimed to further examine immune responses to ER by using chickens selectively bred for high (L10H) and low (L10L) serum MBL levels. Chickens were infected with ER at 3 weeks of age and immune parameters and bacterial load were monitored in blood until day 18 after infection. Blood and spleen leukocytes collected on day 18 were stimulated in vitro with ER antigens and blast transformation of different T-cell populations was assessed. The ER infection gave a very varied outcome and no clear differences were observed between L10H and L10L chickens with respect to leukocyte counts, bacterial load or clinical outcome. Nonetheless, rapid innate responses, e.g., heterophilia and increased serum MBL levels were noted in bacteraemic chickens. All ER infected chickens also showed transient increased expression of mannose receptor MRC1L-B and decreased expression of major histocompatibility complex II on monocytes day 1 after infection indicating monocyte activation or relocation. In vitro ER stimulation showed antigen specific blast transformation of CD4+, TCRγ/δ-CD8αβ+ and TCRγ/δ+CD8αβ+ spleen cells from all infected chickens. For CD4+ and TCRγ/δ-CD8αβ+ cells the proportions of blast transformed cells were significantly higher for samples from L10L chickens than those for samples from L10H chickens. This is the first observation of ER-specific T-cells in chickens and interestingly a Th1-type response comprising cytotoxic T-cells was indicated.
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Affiliation(s)
- Eva Wattrang
- grid.419788.b0000 0001 2166 9211Department of Microbiology, National Veterinary Institute, Uppsala, Sweden
| | - Tina Sørensen Dalgaard
- grid.7048.b0000 0001 1956 2722Department of Animal Science, Aarhus University, Tjele, Denmark
| | | | - Mohammad Naghizadeh
- grid.7048.b0000 0001 1956 2722Department of Animal Science, Aarhus University, Tjele, Denmark ,grid.5254.60000 0001 0674 042XPresent Address: Centre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark
| | | | - Helena Eriksson
- grid.419788.b0000 0001 2166 9211Department of Animal Health and Antimicrobial Strategies, National Veterinary Institute, Uppsala, Sweden
| | - Robert Söderlund
- grid.419788.b0000 0001 2166 9211Department of Microbiology, National Veterinary Institute, Uppsala, Sweden
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17
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Defendi F, Leroy C, Epaulard O, Clavarino G, Vilotitch A, Le Marechal M, Jacob MC, Raskovalova T, Pernollet M, Le Gouellec A, Bosson JL, Poignard P, Roustit M, Thielens N, Dumestre-Pérard C, Cesbron JY. Complement Alternative and Mannose-Binding Lectin Pathway Activation Is Associated With COVID-19 Mortality. Front Immunol 2021; 12:742446. [PMID: 34567008 PMCID: PMC8461024 DOI: 10.3389/fimmu.2021.742446] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 08/23/2021] [Indexed: 12/19/2022] Open
Abstract
Background The SARS-CoV-2 infection triggers excessive immune response resulting in increased levels of pro-inflammatory cytokines, endothelial injury, and intravascular coagulopathy. The complement system (CS) activation participates to this hyperinflammatory response. However, it is still unclear which activation pathways (classical, alternative, or lectin pathway) pilots the effector mechanisms that contribute to critical illness. To better understand the immune correlates of disease severity, we performed an analysis of CS activation pathways and components in samples collected from COVID-19 patients hospitalized in Grenoble Alpes University Hospital between 1 and 30 April 2020 and of their relationship with the clinical outcomes. Methods We conducted a retrospective, single-center study cohort in 74 hospitalized patients with RT-PCR-proven COVID-19. The functional activities of classical, alternative, and mannose-binding lectin (MBL) pathways and the antigenic levels of the individual components C1q, C4, C3, C5, Factor B, and MBL were measured in patients' samples during hospital admission. Hierarchical clustering with the Ward method was performed in order to identify clusters of patients with similar characteristics of complement markers. Age was included in the model. Then, the clusters were compared with the patient clinical features: rate of intensive care unit (ICU) admission, corticoid treatment, oxygen requirement, and mortality. Results Four clusters were identified according to complement parameters. Among them, two clusters revealed remarkable profiles: in one cluster (n = 15), patients exhibited activation of alternative and lectin pathways and low antigenic levels of MBL, C4, C3, Factor B, and C5 compared to all the other clusters; this cluster had the higher proportion of patients who died (27%) and required oxygen support (80%) or ICU care (53%). In contrast, the second cluster (n = 19) presented inflammatory profile with high classical pathway activity and antigenic levels of complement components; a low proportion of patients required ICU care (26%) and no patient died in this group. Conclusion These findings argue in favor of prominent activation of the alternative and MBL complement pathways in severe COVID-19, but the spectrum of complement involvement seems to be heterogeneous requiring larger studies.
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Affiliation(s)
- Federica Defendi
- Laboratoire d’Immunologie, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Corentin Leroy
- Cellule d’Ingénierie des Données, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
- Centre d’Investigation Clinique de l’Innovation et de la Technologie (CIC-IT), Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Olivier Epaulard
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
- Université Grenoble Alpes, TIMC-IMAG, Grenoble, France
| | - Giovanna Clavarino
- Laboratoire d’Immunologie, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Antoine Vilotitch
- Cellule d’Ingénierie des Données, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Marion Le Marechal
- Service des Maladies Infectieuses et Tropicales, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Marie-Christine Jacob
- Laboratoire d’Immunologie, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Tatiana Raskovalova
- Laboratoire d’Immunologie, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Martine Pernollet
- Laboratoire d’Immunologie, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Audrey Le Gouellec
- Université Grenoble Alpes, TIMC-IMAG, Grenoble, France
- Laboratoire de Biochimie, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | | | - Pascal Poignard
- Université Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale (IBS), Grenoble, France
- Laboratoire de Virologie, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
| | - Matthieu Roustit
- Département de Pharmacologie Clinique INSERM CIC 1406, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
- Université Grenoble Alpes, UMR 1042-HP2, INSERM, Grenoble, France
| | - Nicole Thielens
- Université Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale (IBS), Grenoble, France
| | - Chantal Dumestre-Pérard
- Laboratoire d’Immunologie, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
- Université Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale (IBS), Grenoble, France
| | - Jean-Yves Cesbron
- Laboratoire d’Immunologie, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
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18
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Dos Santos ACM, Dos Santos BRC, Dos Santos BB, de Moura EL, Ferreira JM, Dos Santos LKC, Oliveira SP, Dias RBF, Pereira E Silva AC, de Farias KF, de Souza Figueiredo EVM. Genetic polymorphisms as multi-biomarkers in severe acute respiratory syndrome (SARS) by coronavirus infection: A systematic review of candidate gene association studies. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2021; 93:104846. [PMID: 33933633 PMCID: PMC8084602 DOI: 10.1016/j.meegid.2021.104846] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/27/2021] [Accepted: 04/01/2021] [Indexed: 12/30/2022]
Abstract
The Severe acute respiratory syndrome may be caused by coronavirus disease which has resulted in a global pandemic. Polymorphisms in the population play a role in susceptibility to severity. We aimed to perform a systematic review related to the effect of single nucleotide polymorphisms in the development of severe acute respiratory syndrome (SARS). Twenty-eight eligible articles published were identified in PubMed, ScienceDirect, Web of Science, PMC Central and Portal BVS and additional records, with 20 studies performed in China. Information on study characteristics, genetic polymorphisms, and comorbidities was extracted. Study quality was assessed by the STrengthening the REporting of Genetic Association (STREGA) guideline. Few studies investigated the presence of polymorphisms in HLA, ACE1, OAS-1, MxA, PKR, MBL, E-CR1, FcγRIIA, MBL2, L-SIGN (CLEC4M), IFNG, CD14, ICAM3, RANTES, IL-12 RB1, TNFA, CXCL10/IP-10, CD209 (DC-SIGN), AHSG, CYP4F3 and CCL2 with the susceptibility or protection to SARS-Cov. This review provides comprehensive evidence of the association between genetic polymorphisms and susceptibility or protection to severity SARS-CoV. The literature about coronavirus infection, susceptibility to severe acute respiratory syndrome (SARS) and genetic variations is scarce. Further studies are necessary to provide more concrete evidence, mainly related to Covid-19.
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Affiliation(s)
- Ana Caroline Melo Dos Santos
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil; Instituto de Ciências Biológicas e da Saúde (ICBS), Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Bárbara Rayssa Correia Dos Santos
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil; Instituto de Ciências Biológicas e da Saúde (ICBS), Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Bruna Brandão Dos Santos
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil; Instituto de Ciências Biológicas e da Saúde (ICBS), Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Edilson Leite de Moura
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil; Instituto de Ciências Biológicas e da Saúde (ICBS), Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Jean Moisés Ferreira
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Luana Karen Correia Dos Santos
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil; Instituto de Ciências Biológicas e da Saúde (ICBS), Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Susana Paiva Oliveira
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil; Instituto de Ciências Biológicas e da Saúde (ICBS), Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Renise Bastos Farias Dias
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil; Instituto de Ciências Biológicas e da Saúde (ICBS), Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Aline Cristine Pereira E Silva
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Karol Fireman de Farias
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Elaine Virgínia Martins de Souza Figueiredo
- Laboratório de Biologia Molecular e Expressão Gênica, Postgraduate Program in Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil; Instituto de Ciências Biológicas e da Saúde (ICBS), Federal University of Alagoas, Maceió, Alagoas, Brazil..
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Gower WA, Vece TJ. Pediatric pulmonology 2019 year in review: rare and diffuse lung disease. Pediatr Pulmonol 2021; 56:1324-1331. [PMID: 33559960 DOI: 10.1002/ppul.25297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 12/31/2020] [Accepted: 01/20/2021] [Indexed: 11/07/2022]
Abstract
Pediatric Pulmonology publishes original research, review articles, and case reports on topics related to a wide range of children's respiratory disorders. Here we review manuscripts published in 2019 in this journal and others on (1) anatomic lung, airway, and vascular malformations, (2) children's interstitial lung disease, and (3) primary ciliary dyskinesia and non-cystic fibrosis bronchiectasis.
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Affiliation(s)
- William A Gower
- Division of Pediatric Pulmonology, Program for Rare and Interstitial Lung Disease, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Timothy J Vece
- Division of Pediatric Pulmonology, Program for Rare and Interstitial Lung Disease, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
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20
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Willrich MAV, Braun KMP, Moyer AM, Jeffrey DH, Frazer-Abel A. Complement testing in the clinical laboratory. Crit Rev Clin Lab Sci 2021; 58:447-478. [PMID: 33962553 DOI: 10.1080/10408363.2021.1907297] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The complement system is the human's first line of defense against microbial pathogens because of its important housekeeping and infection/inflammation roles. It is composed of a series of soluble and cell-bound proteins that are activated in a cascade effect, similar to the coagulation pathways. There are different pattern recognizing molecules that activate the complement system in response to stimuli or threats, acting through three initiation pathways: classical, lectin, and alternative. All three activation pathways converge at the C3 component and share the terminal pathway. The main outputs of the complement system action are lytic killing of microbes, the release of pro-inflammatory anaphylatoxins, and opsonization of targets. Laboratory testing is relevant in the setting of suspected complement deficiencies, as well as in the emerging number of diseases related to dysregulation (over-activation) of complement. Most common assays measure complement lytic activity and the different complement component concentrations. Specialized testing includes the evaluation of autoantibodies against complement components, activation fragments, and genetic studies. In this review, we cover laboratory testing for complement and the conditions with complement involvement, as well as current challenges in the field.
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Affiliation(s)
| | - Karin M P Braun
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Ann M Moyer
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - David H Jeffrey
- Exsera Biolabs, Department of Medicine, University of Colorado School of Medicine, Aurora, CO, USA
| | - Ashley Frazer-Abel
- Exsera Biolabs, Department of Medicine, University of Colorado School of Medicine, Aurora, CO, USA
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21
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Thalhammer J, Kindle G, Nieters A, Rusch S, Seppänen MRJ, Fischer A, Grimbacher B, Edgar D, Buckland M, Mahlaoui N, Ehl S. Initial presenting manifestations in 16,486 patients with inborn errors of immunity include infections and noninfectious manifestations. J Allergy Clin Immunol 2021; 148:1332-1341.e5. [PMID: 33895260 DOI: 10.1016/j.jaci.2021.04.015] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/31/2021] [Accepted: 04/08/2021] [Indexed: 01/13/2023]
Abstract
BACKGROUND Inborn errors of immunity (IEI) are rare diseases, which makes diagnosis a challenge. A better description of the initial presenting manifestations should improve awareness and avoid diagnostic delay. Although increased infection susceptibility is a well-known initial IEI manifestation, less is known about the frequency of other presenting manifestations. OBJECTIVE We sought to analyze age-related initial presenting manifestations of IEI including different IEI disease cohorts. METHODS We analyzed data on 16,486 patients of the European Society for Immunodeficiencies Registry. Patients with autoinflammatory diseases were excluded because of the limited number registered. RESULTS Overall, 68% of patients initially presented with infections only, 9% with immune dysregulation only, and 9% with a combination of both. Syndromic features were the presenting feature in 12%, 4% had laboratory abnormalities only, 1.5% were diagnosed because of family history only, and 0.8% presented with malignancy. Two-third of patients with IEI presented before the age of 6 years, but a quarter of patients developed initial symptoms only as adults. Immune dysregulation was most frequently recognized as an initial IEI manifestation between age 6 and 25 years, with male predominance until age 10 years, shifting to female predominance after age 40 years. Infections were most prevalent as a first manifestation in patients presenting after age 30 years. CONCLUSIONS An exclusive focus on infection-centered warning signs would have missed around 25% of patients with IEI who initially present with other manifestations.
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Affiliation(s)
- Julian Thalhammer
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Center for Pediatrics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Gerhard Kindle
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Alexandra Nieters
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Stephan Rusch
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Mikko R J Seppänen
- Rare Disease and Pediatric Research Centers, Hospital for Children and Adolescents and Adult Immunodeficiency Unit, Inflammation Center, University of Helsinki and HUS Helsinki, University Hospital, Helsinki, Finland
| | - Alain Fischer
- Pediatric Immuno-Haematology and Rheumatology Unit, Necker Enfants Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France; French National Reference Center for Primary Immune Deficiencies (CEREDIH), Necker Enfants Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Bodo Grimbacher
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; DZIF - German Center for Infection Research, Satellite Center Freiburg, Freiburg, Germany; CIBSS - Centre for Integrative Biological Signalling Studies, Albert-Ludwigs University, Freiburg, Germany; RESIST - Cluster of Excellence 2155 to Hanover Medical School, Satellite Center Freiburg, Freiburg, Germany
| | - David Edgar
- St James's Hospital, Dublin, Ireland; Trinity College Dublin, Dublin, Ireland
| | - Matthew Buckland
- Institute of Immunity and Transplantation, University College London, United Kingdom; Department of Immunology, Royal Free London NHS Foundation Trust, London, United Kingdom
| | - Nizar Mahlaoui
- Pediatric Immuno-Haematology and Rheumatology Unit, Necker Enfants Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France; French National Reference Center for Primary Immune Deficiencies (CEREDIH), Necker Enfants Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Stephan Ehl
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; CIBSS - Centre for Integrative Biological Signalling Studies, Albert-Ludwigs University, Freiburg, Germany.
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A SNaPshot Assay for Determination of the Mannose-Binding Lectin Gene Variants and an Algorithm for Calculation of Haplogenotype Combinations. Diagnostics (Basel) 2021; 11:diagnostics11020301. [PMID: 33668563 PMCID: PMC7918147 DOI: 10.3390/diagnostics11020301] [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: 11/02/2020] [Revised: 02/07/2021] [Accepted: 02/11/2021] [Indexed: 11/16/2022] Open
Abstract
Mannose-binding lectin (MBL) deficiency caused by the variability in the MBL2 gene is responsible for the susceptibility to and severity of various infectious and autoimmune diseases. A combination of six single nucleotide polymorphisms (SNPs) has a major impact on MBL levels in circulation. The aim of this study is to design and validate a sensitive and economical method for determining MBL2 haplogenotypes. The SNaPshot assay is designed and optimized to genotype six SNPs (rs1800451, rs1800450, rs5030737, rs7095891, rs7096206, rs11003125) and is validated by comparing results with Sanger sequencing. Additionally, an algorithm for online calculation of haplogenotype combinations from the determined genotypes is developed. Three hundred and twenty-eight DNA samples from healthy individuals from the Czech population are genotyped. Minor allele frequencies (MAFs) in the Czech population are in accordance with those present in the European population. The SNaPshot assay for MBL2 genotyping is a high-throughput, cost-effective technique that can be used in further genetic-association studies or in clinical practice. Moreover, a freely available online application for the calculation of haplogenotypes from SNPs is developed within the scope of this project.
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Taheri M, Karimloo R, Sarani H, Molashahi B, Naderi M, Bahari G, Hashemi M. Association Study of MBL2 Gene Polymorphisms and Risk of Tuberculosis in Southeast of Iran. Prague Med Rep 2021; 121:236-243. [PMID: 33270011 DOI: 10.14712/23362936.2020.20] [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] [Indexed: 10/22/2022] Open
Abstract
Mannose-binding lectin (MBL) is an acute phase protein which recognizes the pathogens through its carbohydrate recognition domain. It is an important part of human innate immunity. The aim of the current study was to evaluate the impact of MBL2 polymorphism on pulmonary tuberculosis in a number of patients from the southeast of Iran. In this case-control study, 2 MBL gene polymorphisms (rs1800450, rs7095891) were genotyped using PCR-RFLP method and polymerase chain reaction for detection of 34bp ins/del of MBL2 gene (rs777980157) polymorphism. The study included 170 patients with PTB (pulmonary tuberculosis) and 175 control subjects. The findings indicated that the GA (GA vs. GG: OR=0.172, 95% CI=0.107-0.275, P<0.001) (OR - odds ratio; CI - confidence interval) genotype as well as GA+AA (GA+AA vs. GG: OR=0.191, 95% CI=0.120-0.302, P<0.001) genotype of rs1800450 reduced the risk of PTB compared to GG genotype. The rs7095891 variant significantly decreased the risk of PTB in codominant (GA vs. GG: OR=0.118, 95% CI=0.054-0.258, P<0.001; and AA vs. GG: OR=0.029, 95% CI=0.01-0.082, P<0.001), dominant (GA+AA vs. GG: OR=0.095, 95% CI=0.044-0.207, P<0.001) and recessive (AA vs. GA+GG: OR=0.172, CI=0.081-0.365, P<0.001) inheritance models. No significant relationship was identified between the rs777980157 variant and PTB risk/protection. In conclusion, we found that the MBL2 rs1800450 and rs7095891 polymorphisms provide relative protection against PTB. Additional studies on larger populations with different ethnicities are required to verify our findings.
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Affiliation(s)
- Mohsen Taheri
- Department of Genetic, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran. .,Genetics of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
| | - Rezvan Karimloo
- Infectious Diseases and Tropical Medicine Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hosna Sarani
- Children and Adolescent Health Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Behrouz Molashahi
- Genetics of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohammad Naderi
- Infectious Diseases and Tropical Medicine Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Gholamreza Bahari
- Children and Adolescent Health Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohammad Hashemi
- Genetics of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
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24
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Hevey R, Pouw RB, Harris C, Ricklin D. Sweet turning bitter: Carbohydrate sensing of complement in host defence and disease. Br J Pharmacol 2020; 178:2802-2822. [PMID: 33140840 DOI: 10.1111/bph.15307] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/20/2020] [Accepted: 10/26/2020] [Indexed: 12/27/2022] Open
Abstract
The complement system plays a major role in threat recognition and in orchestrating responses to microbial intruders and accumulating debris. This immune surveillance is largely driven by lectins that sense carbohydrate signatures on foreign, diseased and healthy host cells and act as complement activators, regulators or receptors to shape appropriate immune responses. While carbohydrate sensing protects our bodies, misguided or impaired recognition can contribute to disease. Moreover, pathogenic microbes have evolved to evade complement by mimicking host signatures. While complement is recognized as a disease factor, we only slowly start to appreciate the role of carbohydrate interactions in the underlying processes. A better understanding of complement's sweet side will contribute to a better description of disease mechanisms and enhanced diagnostic and therapeutic options. This review introduces the key components in complement-mediated carbohydrate sensing, discusses their role in health and disease, and touches on the potential effects of carbohydrate-related disease intervention. LINKED ARTICLES: This article is part of a themed issue on Canonical and non-canonical functions of the complement system in health and disease. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.14/issuetoc.
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Affiliation(s)
- Rachel Hevey
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Richard B Pouw
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Claire Harris
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Daniel Ricklin
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
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25
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Hammad NM, Abdelhadi AA, Fawzy MM, Marei A. Complement component 3c and tumor necrosis factor-α systemic assessment after Candida antigen immunotherapy in cutaneous warts. Braz J Microbiol 2020; 51:1673-1681. [PMID: 32594377 PMCID: PMC7688774 DOI: 10.1007/s42770-020-00322-0] [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: 03/10/2020] [Accepted: 06/16/2020] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND Cutaneous warts are the commonest benign lesion produced by human papillomavirus. Lesions often regress spontaneously yet have a high rate of recurrence. They impair patients' quality of life and carry the potential risk of cancer. Nowadays, Candida antigen immunotherapy has become an encouraging therapeutic modality for warts. We tried to assess the role of the complement pathway and T helper 1 immune response in clinical response to Candida antigen immunotherapy via complement component 3c (C3c) and tumor necrosis factor (TNF)-α, respectively. METHODS A total of 44 patients with cutaneous warts were enrolled in the study. Patients were injected with Candida antigen at 2-week interval until complete clearance of the lesion or for a maximum of 5 sessions. Blood samples were collected before initiation and after completion of immunotherapy. C3 and C4 were measured using an automated turbidimetric method. Mannose-binding lectin (MBL), C3c, and TNF-α were measured using enzyme-linked immune sorbent assay. RESULTS A total of 56.4%, 17.9%, and 25.7% of the patients showed complete, partial, and no response to immunotherapy, respectively. Lesions on the dorsum of the foot and sole showed significant clearance (p value = 0.037). All patients had no deficient C3, C4, and MBL serum levels. C3c and TNF-α serum levels were significantly higher in non-responder group (p value < 0.001 and < 0.001, respectively). C3c and TNF-α serum levels were strongly correlated in all the studied patients (r = 0.8, p value < 0.001). CONCLUSIONS Candida antigen immunotherapy is an effective therapeutic modality for cutaneous warts. C3c and TNF-α serum levels were higher in patients who failed to respond to immunotherapy. CLINICAL TRIAL REGISTRY NUMBER NCT04399577 , May 2020 "retrospectively registered".
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Affiliation(s)
- Noha M Hammad
- Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
| | - Amina A Abdelhadi
- Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Manal M Fawzy
- Dermatology and Andrology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Ayman Marei
- Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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26
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Samardžija M, Lojkić M, Maćešić N, Valpotić H, Butković I, Šavorić J, Žura Žaja I, Leiner D, Đuričić D, Marković F, Kočila P, Vidas Z, Gerenčer M, Kaštelan A, Milovanović A, Lazarević M, Rukavina D, Valpotić I. Reproductive immunology in viviparous mammals: evolutionary paradox of interactions among immune mechanisms and autologous or allogeneic gametes and semiallogeneic foetuses. Vet Q 2020; 40:353-383. [PMID: 33198593 PMCID: PMC7755402 DOI: 10.1080/01652176.2020.1852336] [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: 08/03/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 11/24/2022] Open
Abstract
Literally, reproductive immunology was born in bovine on-farm reproduction where seminal experiments intended for developing methods for embryo transfer in cattle were performed. Actually, these experiments led to two of major concepts and fundamental principles of reproductive immunology using the bovine species as a model for biomedical research, namely the concept of acquired immunological tolerance and the paradox of the semiallogeneic bovine foetus whereby such organism can develop within an immunologically competent host. Peter Medawar, a scientist who together with Frank Macfarlande Burnet shared the 1960 Nobel Prize in physiology or medicine for discovery of acquired immunological tolerance, while studying dizygotic cattle twins, thereby giving birth to reproductive immunology. Also, these findings significantly influenced development of organ transplants and showed that using farm animals as models for studying transplantation immunology had general relevance for mammalian biology and health including those of humans. However, the interest for further research of the fascinating maternal immune influences on pregnancy and perinatal outcomes and of the prevention and treatment of immunologically mediated reproductive disorders in viviparous mammals of veterinary relevance by veterinary immunologists and reproductive clinicians have been very scarce regarding the application of nonspecific immunomodulatory agents for prevention and treatment of subfertility and infertility in pigs and cattle, but still broadening knowledge in this area and hold great potential for improving such therapy in the future. The aim of the current overview is to provide up-to-date information and explaining/translating relevant immunology phenomena into veterinary practice for specialists and scientists/clinicians in reproduction of animals.
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Affiliation(s)
- M. Samardžija
- Clinic for Obstetrics and Reproduction of Animals, Veterinary Faculty University of Zagreb, Zagreb, Croatia
| | - M. Lojkić
- Clinic for Obstetrics and Reproduction of Animals, Veterinary Faculty University of Zagreb, Zagreb, Croatia
| | - N. Maćešić
- Clinic for Obstetrics and Reproduction of Animals, Veterinary Faculty University of Zagreb, Zagreb, Croatia
| | - H. Valpotić
- Department for Animal Nutrition and Dietetics, Veterinary Faculty University of Zagreb, Zagreb, Croatia
| | - I. Butković
- Clinic for Obstetrics and Reproduction of Animals, Veterinary Faculty University of Zagreb, Zagreb, Croatia
| | - J. Šavorić
- Clinic for Obstetrics and Reproduction of Animals, Veterinary Faculty University of Zagreb, Zagreb, Croatia
| | - I. Žura Žaja
- Department for Physiology and Radiobiology, Veterinary Faculty University of Zagreb, Zagreb, Croatia
| | - D. Leiner
- Department of Anatomy, Histology and Embriology, Veterinary Faculty University of Zagreb, Zagreb, Croatia
| | | | | | - P. Kočila
- Animal Feed Factory, Čakovec, Croatia
| | - Z. Vidas
- Faculty of Medicine, Department of Urology, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - M. Gerenčer
- Croatian Academy of Sciences and Arts, Croatian Academy of Sciences and Arts, Zagreb, Croatia
| | - A. Kaštelan
- Department of Reproduction, Veterinary Scientific Institute, Novi Sad, Serbia
| | - A. Milovanović
- Department for Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
| | - M. Lazarević
- Department of Cellular Immunology, Baxter Hyland Immuno, Vienna, Austria
| | - D. Rukavina
- Department of Reproduction, Veterinary Scientific Institute, Novi Sad, Serbia
| | - I. Valpotić
- Department of Biology, Veterinary Faculty University of Zagreb, Zagreb, Croatia
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27
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Jacobson S, Larsson P, Åberg AM, Johansson G, Winsö O, Söderberg S. Levels of mannose-binding lectin (MBL) associates with sepsis-related in-hospital mortality in women. J Inflamm (Lond) 2020; 17:28. [PMID: 32817747 PMCID: PMC7425558 DOI: 10.1186/s12950-020-00257-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/31/2020] [Indexed: 11/10/2022] Open
Abstract
Background Mannose-binding lectin (MBL) mediates the innate immune response either through direct opsonisation of microorganisms or through activation of the complement system. There are conflicting data whether MBL deficiency leads to increased susceptibility to infections or not. The aim of this study was to determine if low levels of mannose-binding lectin (MBL) predict sepsis development, sepsis severity and outcome from severe sepsis or septic shock. Method Patients aged 18 years or more with documented sepsis within 24 h after admission to the intensive care unit were included if they had participated in a health survey and donated blood samples prior to the sepsis event. A subset of these patients had stored plasma also from the acute phase. Two matched referents free of known sepsis were selected for each case. Plasma levels MBL were determined in stored samples from health surveys (baseline) and from ICU admission (acute phase). The association between MBL and sepsis, sepsis severity and in-hospital mortality were determined with 1300 ng/mL as cut-off for low levels. Results We identified 148 patients (61.5% women) with a first-time sepsis event 6.5 years (median with IQR 7.7) after participation in a health survey, of which 122 also had samples from the acute septic phase. Both high MBL levels in the acute phase (odds ratio [95% confidence interval]) (2.84 [1.20-6.26]), and an increase in MBL levels from baseline to the acute phase (3.76 [1.21-11.72]) were associated with increased risk for in-hospital death in women, but not in men (0.47 [0.11-2.06]). Baseline MBL levels did not predict future sepsis, sepsis severity or in-hospital mortality. Conclusions An increase from baseline to the acute phase as well as high levels in the acute phase associated with an unfavourable outcome in women.
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Affiliation(s)
- Sofie Jacobson
- Department of Surgical and Perioperative Sciences, Anesthesiology and Intensive Care Medicine, Umeå University, SE-901 87 Umeå, Sweden
| | - Peter Larsson
- Department of Surgical and Perioperative Sciences, Anesthesiology and Intensive Care Medicine, Umeå University, SE-901 87 Umeå, Sweden
| | - Anna-Maja Åberg
- Department of Surgical and Perioperative Sciences, Anesthesiology and Intensive Care Medicine, Umeå University, SE-901 87 Umeå, Sweden
| | - Göran Johansson
- Department of Surgical and Perioperative Sciences, Anesthesiology and Intensive Care Medicine, Umeå University, SE-901 87 Umeå, Sweden
| | - Ola Winsö
- Department of Surgical and Perioperative Sciences, Anesthesiology and Intensive Care Medicine, Umeå University, SE-901 87 Umeå, Sweden
| | - Stefan Söderberg
- Department of Public Health and Clinical Medicine, Medicine, Umeå University, SE-901 87 Umeå, Sweden
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28
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Dogru D, Polat SE, Tan Ç, Tezcan İ, Yalçın SS, Utine E, Oğuz B, Yaz İ, Emiralioğlu N, Hızal M, Yalçın E, Özçelik U, Çağdaş D, Kiper N. Impact of mannose-binding lectin 2 gene polymorphisms on disease severity in noncystic fibrosis bronchiectasis in children. Pediatr Pulmonol 2020; 55:1190-1198. [PMID: 32119194 DOI: 10.1002/ppul.24711] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 02/22/2020] [Indexed: 11/08/2022]
Abstract
BACKGROUND Mannose-binding lectin (MBL) is a complement protein involved in the innate immune system, and is associated with some chronic respiratory diseases including noncystic fibrosis (non-CF) bronchiectasis in adults. The aim of this study was to investigate the frequency of MBL2 gene polymorphisms in children with non-CF bronchiectasis, and the effect of MBL deficiency on disease severity. METHODS Fifty children with non-CF bronchiectasis (bronchiectasis group) and 50 healthy controls (control group) were included. The demographic findings, number of acute pulmonary exacerbations in the previous year, airway cultures, pulmonary function tests, and radiologic scores of the bronchiectasis group were recorded. DNA extraction was performed in both groups and MBL2 gene polymorphisms in codons 52, 54, 57 in exon 1 and H/L, Y/X in the promoter region were studied using real-time polymerase chain reaction. Haplotypes were made by genotypes, and MBL serum expression was classified according to the genotypes in the literature. RESULTS The bronchiectasis group consisted of 23 (46%) patients with primary ciliary dyskinesia, 5 (10%) with primary immunodeficiency diseases, and 22 (44%) with idiopathic bronchiectasis. There were no statistically significant differences between the bronchiectasis and control groups in terms of allele and genotype frequencies of polymorphisms in codons 52, 54, 57 in exon 1 and promoter H/L. However, the YX heterozygote genotype was more frequent in the control group (82%) compared with the bronchiectasis group (50%) (P = .002). The frequency of patients with intermediate serum MBL expression genotype was higher in the bronchiectasis group (20%) than in the control group (0%) (P = .001). In the bronchiectasis group, there were no significant differences in growth, annual pulmonary exacerbation rates in the last year, pulmonary function tests, radiologic scores, and microbiologic findings between low, intermediate, and high-expressing genotypes. CONCLUSIONS In children with non-CF bronchiectasis, MBL genotype was different from healthy controls. MBL deficiency associated only with MBL genotype was not related to disease severity in this group of patients.
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Affiliation(s)
- Deniz Dogru
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Sanem E Polat
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Çağman Tan
- Department of Pediatrics, Division of Pediatric Immunology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - İlhan Tezcan
- Department of Pediatrics, Division of Pediatric Immunology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Sıddıka S Yalçın
- Department of Pediatrics, Division of Social Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Eda Utine
- Department of Pediatrics, Division of Pediatric Genetics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Berna Oğuz
- Department of Radiology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - İsmail Yaz
- Department of Pediatrics, Division of Pediatric Immunology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Nagehan Emiralioğlu
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Mina Hızal
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Ebru Yalçın
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Uğur Özçelik
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Deniz Çağdaş
- Department of Pediatrics, Division of Pediatric Immunology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Nural Kiper
- Department of Pediatrics, Division of Pediatric Pulmonology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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Nayor M, Short MI, Rasheed H, Lin H, Jonasson C, Yang Q, Hveem K, Felix JF, Morrison AC, Wild PS, Morley MP, Cappola TP, Benson MD, Ngo D, Sinha S, Keyes MJ, Shen D, Wang TJ, Larson MG, Brumpton BM, Gerszten RE, Omland T, Vasan RS. Aptamer-Based Proteomic Platform Identifies Novel Protein Predictors of Incident Heart Failure and Echocardiographic Traits. Circ Heart Fail 2020; 13:e006749. [PMID: 32408813 PMCID: PMC7236427 DOI: 10.1161/circheartfailure.119.006749] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND We used a large-scale, high-throughput DNA aptamer-based discovery proteomic platform to identify circulating biomarkers of cardiac remodeling and incident heart failure (HF) in community-dwelling individuals. METHODS We evaluated 1895 FHS (Framingham Heart Study) participants (age 55±10 years, 54% women) who underwent proteomic profiling and echocardiography. Plasma levels of 1305 proteins were related to echocardiographic traits and to incident HF using multivariable regression. Statistically significant protein-HF associations were replicated in the HUNT (Nord-Trøndelag Health) study (n=2497, age 63±10 years, 43% women), and results were meta-analyzed. Genetic variants associated with circulating protein levels (pQTLs) were related to echocardiographic traits in the EchoGen (n=30 201) and to incident HF in the CHARGE (n=20 926) consortia. RESULTS Seventeen proteins associated with echocardiographic traits in cross-sectional analyses (false discovery rate <0.10), and 8 of these proteins had pQTLs associated with echocardiographic traits in EchoGen (P<0.0007). In Cox models adjusted for clinical risk factors, 29 proteins demonstrated associations with incident HF in FHS (174 HF events, mean follow-up 19 [limits, 0.2-23.7] years). In meta-analyses of FHS and HUNT, 6 of these proteins were associated with incident HF (P<3.8×10-5; 3 with higher risk: NT-proBNP [N-terminal proB-type natriuretic peptide], TSP2 [thrombospondin-2], MBL [mannose-binding lectin]; and 3 with lower risk: ErbB1 [epidermal growth factor receptor], GDF-11/8 [growth differentiation factor-11/8], and RGMC [hemojuvelin]). For 5 of the 6 proteins, pQTLs were associated with echocardiographic traits (P<0.0006) in EchoGen, and for RGMC, a protein quantitative trait loci was associated with incident HF (P=0.001). CONCLUSIONS A large-scale proteomics approach identified new predictors of cardiac remodeling and incident HF. Future studies are warranted to elucidate how biological pathways represented by these proteins may mediate cardiac remodeling and HF risk and to assess if these proteins can improve HF risk prediction.
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Affiliation(s)
- Matthew Nayor
- Framingham Heart Study, Framingham, MA
- Cardiology Division, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Meghan I. Short
- Department of Biostatistics, Boston University School of Public Health, Boston, MA
- Glenn Biggs Institute for Alzheimer’s and Neurodegenerative Diseases, University of Texas Health Science Center, San Antonio, TX
| | - Humaira Rasheed
- K.G. Jebsen Centre for Genetic Epidemiology, Department of Public Health and Nursing, Norwegian University of Science and Technology, Norway
- MRC Integrative Epidemiology Unit, University of Bristol, UK
| | - Honghuang Lin
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Christian Jonasson
- K.G. Jebsen Centre for Genetic Epidemiology, Department of Public Health and Nursing, Norwegian University of Science and Technology, Norway
| | - Qiong Yang
- Department of Biostatistics, Boston University School of Public Health, Boston, MA
| | - Kristian Hveem
- K.G. Jebsen Centre for Genetic Epidemiology, Department of Public Health and Nursing, Norwegian University of Science and Technology, Norway
| | - Janine F. Felix
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Alanna C. Morrison
- Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, Texas
| | - Philipp S. Wild
- Preventive Cardiology and Preventive Medicine, Center for Cardiology, and Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- DZHK (German Center for Cardiovascular Research), partner site RhineMain, Mainz, Germany
| | - Michael P. Morley
- The Cardiovascular Institute, Perelman School of Medicine, University of Pennsylvania, PA
| | - Thomas P. Cappola
- The Cardiovascular Institute, Perelman School of Medicine, University of Pennsylvania, PA
- Division of Cardiovascular Medicine, Perelman School of Medicine, University of Pennsylvania, PA
| | - Mark D. Benson
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | | | | | - Debby Ngo
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Sumita Sinha
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Michelle J. Keyes
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Dongxiao Shen
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Thomas J. Wang
- Division of Cardiovascular Medicine, Vanderbilt University, Nashville, TN
| | - Martin G. Larson
- Framingham Heart Study, Framingham, MA
- Department of Biostatistics, Boston University School of Public Health, Boston, MA
| | - Ben M. Brumpton
- Glenn Biggs Institute for Alzheimer’s and Neurodegenerative Diseases, University of Texas Health Science Center, San Antonio, TX
- K.G. Jebsen Centre for Genetic Epidemiology, Department of Public Health and Nursing, Norwegian University of Science and Technology, Norway
- Clinic of Thoracic and Occupational Medicine, St. Olavs Hospital, Trondheim University Hospital, Norway
| | - Robert E. Gerszten
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Torbjørn Omland
- Department of Cardiology, Akershus University Hospital, Lørenskog, and Center for Heart Failure Research, Institute of Clinical Medicine, University of Oslo, Norway
| | - Ramachandran S. Vasan
- Framingham Heart Study, Framingham, MA
- Sections of Preventive Medicine & Epidemiology, and Cardiology, Department of Medicine, Boston University School of Medicine, Boston, MA
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Koucký M, Malíčková K, Kopřivová H, Cindrová-Davies T, Čapek V, Pařízek A. Serum mannose-binding lectin (MBL) concentrations are reduced in non-pregnant women with previous adverse pregnancy outcomes. Scand J Immunol 2020; 92:e12892. [PMID: 32335925 DOI: 10.1111/sji.12892] [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: 02/08/2020] [Revised: 03/27/2020] [Accepted: 04/20/2020] [Indexed: 11/28/2022]
Abstract
Mannose-binding lectin (MBL) is an important component of the innate immunity, and it is responsible not only for opsonization of micro-organisms, but also for efferocytosis. The aim of this study was to investigate whether MBL concentrations and lectin complement pathway activity are altered in non-pregnant women with previous adverse pregnancy outcomes. Patients were divided into four groups on the basis of their history of pregnancy complications, including control patients who had uncomplicated pregnancies and term deliveries (control, n = 33), and three groups of patients with a history of pregnancy complications, including preterm labour (n = 29), recurrent miscarriage (n = 19) or unexplained intrauterine foetal death (IUFD; n = 17). All women enrolled in the study had an interval of three to six months following their previous pregnancy, and they agreed to have a blood sample taken. We found significantly higher MBL concentrations and functional activity of the lectin complement pathway in healthy controls who had previous uneventful term pregnancies (1341 ng/mL; activity 100% (IQR: 62%-100%)), compared to women with the history of IUFD (684 ng/mL, P = .008; activity 8.5% (IQR: 0%-97.8%), P = .011), recurrent miscarriage (524 ng/mL, P = .022; activity 44% (IQR: 4%-83%), P = .011) or preterm labour (799 ng/mL, P = .022; activity 62.5% (IQR: 0%-83%), P = .003). Our results suggest that inadequate function of the complement lectin pathway is associated with a higher risk of preterm labour, recurrent miscarriage and unexplained intrauterine foetal death.
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Affiliation(s)
- Michal Koucký
- Department of Gynecology and Obstetrics of the First Faculty of Medicine and General Teaching Hospital, Charles University in Prague, Prague, Czech Republic
| | - Karin Malíčková
- Institute of Medical Biochemistry and Laboratory Diagnostics of the First Faculty of Medicine and General Teaching Hospital, Charles University in Prague, Prague, Czech Republic
| | - Helena Kopřivová
- Institute of Medical Biochemistry and Laboratory Diagnostics of the First Faculty of Medicine and General Teaching Hospital, Charles University in Prague, Prague, Czech Republic
| | - Tereza Cindrová-Davies
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | | | - Antonín Pařízek
- Department of Gynecology and Obstetrics of the First Faculty of Medicine and General Teaching Hospital, Charles University in Prague, Prague, Czech Republic
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31
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Korolenko TA, Bgatova NP, Ovsyukova MV, Shintyapina A, Vetvicka V. Hypolipidemic Effects of β-Glucans, Mannans, and Fucoidans: Mechanism of Action and Their Prospects for Clinical Application. Molecules 2020; 25:molecules25081819. [PMID: 32316136 PMCID: PMC7221696 DOI: 10.3390/molecules25081819] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/10/2020] [Accepted: 04/10/2020] [Indexed: 12/17/2022] Open
Abstract
The search for lipid-lowering drugs is important for clinical medicine. This review summarizes our research findings regarding the hypolipidemic activity of polysaccharides. There are several validated agents altering lipid levels which reduce the risk of atherosclerotic cardiovascular events. Nonetheless, for many people, the risk of such an event remains unacceptably high despite treatment with these agents. This situation has prompted the search for new therapies to reduce the residual cardiovascular risk. The lipid-lowering effect of β-glucans consumed with food was demonstrated in patients with atherosclerosis. The mechanism of the protective effect of β-glucans is poorly studied. The effects of β-glucans are mediated by Toll-like receptors, by dectin-1, and possibly by other receptors. Nevertheless, the mechanism of the protective action of β-glucan in lipemic mice has been studied insufficiently. This review will present up-to-date information regarding experimental hypolipidemic polysaccharide compounds that hold promise for medicine. Phagocyte-specific chitotriosidase in humans contributes to innate immune responses against chitin-containing fungi. This enzyme has been first described in patients with Gaucher disease and serves as an important diagnostic biomarker. It has been reported that, in mice, chitin particles of certain size are recognized by macrophages through Toll-like receptors, dectin-1, and to a lesser extent through mannose receptor.
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Affiliation(s)
- Tatiana A. Korolenko
- Department of Clinical Neuroscience, Behavior and Neurotechnologies, Institute of Physiology and Basic Medicine, Timakov St. 4, Novosibirsk 630117, Russia; (T.A.K.); (M.V.O.)
| | - Nataliya P. Bgatova
- Laboratory of Ultrastructural Research, Department of Experimental Pharmacology, Research Institute of Clinical and Experimental Lymphology—Branch of the Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk 630117, Russia;
| | - Marina V. Ovsyukova
- Department of Clinical Neuroscience, Behavior and Neurotechnologies, Institute of Physiology and Basic Medicine, Timakov St. 4, Novosibirsk 630117, Russia; (T.A.K.); (M.V.O.)
| | - Alexandra Shintyapina
- Institute of Molecular Biology and Biophysics, Federal Research Center, Timakov St. 2, Novosibirsk 630117, Russia;
| | - Vaclav Vetvicka
- Department of Pathology, University of Louisville, Louisville, KY 40292, USA
- Correspondence:
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Wilk MA, Braun AT, Farrell PM, Laxova A, Brown DM, Holt JM, Birch CL, Sosonkina N, Wilk BM, Worthey EA. Applying whole-genome sequencing in relation to phenotype and outcomes in siblings with cystic fibrosis. Cold Spring Harb Mol Case Stud 2020; 6:a004531. [PMID: 32014855 PMCID: PMC6996517 DOI: 10.1101/mcs.a004531] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 10/16/2019] [Indexed: 12/18/2022] Open
Abstract
Variations in disease onset and/or severity have often been observed in siblings with cystic fibrosis (CF), despite the same CFTR genotype and environment. We postulated that genomic variation (modifier and/or pharmacogenomic variants) might explain these clinical discordances. From a cohort of patients included in the Wisconsin randomized clinical trial (RCT) of newborn screening (NBS) for CF, we identified two brothers who showed discordant lung disease courses as children, with one milder and the other more severe than average, and a third, eldest brother, who also has severe lung disease. Leukocytes were harvested as the source of DNA, and whole-genome sequencing (WGS) was performed. Variants were identified and analyzed using in-house-developed informatics tools. Lung disease onset and severity were quantitatively different between brothers during childhood. The youngest, less severely affected brother is homozygous for HFE p.H63D. He also has a very rare PLG p.D238N variant that may influence host-pathogen interaction during chronic lung infection. Other variants of interest were found differentially between the siblings. Pharmacogenomics findings were consistent with the middle, most severely affected brother having poor outcomes to common CF treatments. We conclude that genomic variation between siblings with CF is expected. Variable lung disease severity may be associated with differences acting as genetic modifiers and/or pharmacogenomic factors, but large cohort studies are needed to assess this hypothesis.
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Affiliation(s)
- Melissa A Wilk
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama 35806, USA
| | - Andrew T Braun
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA
| | - Philip M Farrell
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA
| | - Anita Laxova
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA
| | - Donna M Brown
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama 35806, USA
| | - James M Holt
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama 35806, USA
| | - Camille L Birch
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama 35806, USA
| | - Nadiya Sosonkina
- Department of Genetics, University of Alabama-Birmingham, Birmingham, Alabama 35233, USA
| | - Brandon M Wilk
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama 35806, USA
| | - Elizabeth A Worthey
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama 35806, USA
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA
- Department of Genetics, University of Alabama-Birmingham, Birmingham, Alabama 35233, USA
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33
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Liang RA, Høiland II, Ueland T, Aukrust P, Snir O, Hindberg K, Braekkan SK, Garred P, Mollnes TE, Hansen JB. Plasma levels of mannose-binding lectin and future risk of venous thromboembolism. J Thromb Haemost 2019; 17:1661-1669. [PMID: 31220397 DOI: 10.1111/jth.14539] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/22/2019] [Accepted: 06/06/2019] [Indexed: 01/09/2023]
Abstract
BACKGROUND Animal and observational studies have suggested a pathophysiological role for complement in venous thromboembolism (VTE), but the initiating mechanisms are unknown. Mannose-binding lectin (MBL) bound to altered host cells leads to activation of the lectin complement pathway, and both high and low MBL levels have been implicated in the pathophysiology of cardiovascular disease. OBJECTIVES To investigate the association between plasma MBL levels and future risk of incident VTE. METHODS We conducted a nested case-control study in 417 VTE patients and 849 age-matched and sex-matched controls derived from the general population (Tromsø Study). Plasma MBL levels were measured using enzyme-linked immunosorbent assay. Logistic regression models were used to estimate odds ratio (OR) for VTE across quartiles of plasma MBL levels. RESULTS Subjects with plasma MBL levels in the lowest quartile (<435 ng/mL) had a reduced OR for overall VTE (OR 0.79, 95% confidence interval [CI]: 0.56-1.10) and for DVT (OR 0.70, 95% CI: 0.47-1.04) compared to those with MBL in the highest quartile (≥2423 ng/mL) after multivariable adjustments. For VTE, DVT, and pulmonary embolism (PE) the ORs decreased substantially with decreasing time between blood sampling and VTE event. CONCLUSIONS Our findings suggest that low plasma MBL levels are associated with reduced risk of VTE, and DVT in particular.
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Affiliation(s)
- Robin A Liang
- K. G. Jebsen - Thrombosis Research and Expertise Center (TREC), Department of Clinical Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Ina I Høiland
- K. G. Jebsen - Thrombosis Research and Expertise Center (TREC), Department of Clinical Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Thor Ueland
- K. G. Jebsen - Thrombosis Research and Expertise Center (TREC), Department of Clinical Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Pål Aukrust
- K. G. Jebsen - Thrombosis Research and Expertise Center (TREC), Department of Clinical Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
- Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- K. G. Jebsen - Inflammation Research Center, University of Oslo, Oslo, Norway
| | - Omri Snir
- K. G. Jebsen - Thrombosis Research and Expertise Center (TREC), Department of Clinical Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Kristian Hindberg
- K. G. Jebsen - Thrombosis Research and Expertise Center (TREC), Department of Clinical Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Sigrid K Braekkan
- K. G. Jebsen - Thrombosis Research and Expertise Center (TREC), Department of Clinical Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
- Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
| | - Peter Garred
- Laboratory of Molecular Medicine, Department of Clinical Immunology, Section 7631, Rigshospitalet, Copenhagen, Denmark
| | - Tom E Mollnes
- K. G. Jebsen - Thrombosis Research and Expertise Center (TREC), Department of Clinical Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
- Department of Immunology, Oslo University Hospital and University of Oslo, Oslo, Norway
- Research Laboratory, Nordland Hospital, Bodø, Norway
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - John-Bjarne Hansen
- K. G. Jebsen - Thrombosis Research and Expertise Center (TREC), Department of Clinical Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
- Division of Internal Medicine, University Hospital of North Norway, Tromsø, Norway
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Nasr M, Marie A, Boghdadi G, Elsaid R, Salah E. Role of mannose binding lectin in response to candida antigen immunotherapy of warts. J DERMATOL TREAT 2019; 32:376-380. [PMID: 31469597 DOI: 10.1080/09546634.2019.1662365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Warts is the commonest cutaneous manifestation of human papillomavirus (HPV) infection. Intralesional Candida antigen immunotherapy is used for wart treatment. AIM To identify the role of mannose binding lectin (MBL) in susceptibility to HPV infection and to explore the relationship between MBL and response to intralesional Candida antigen immunotherapy of wart. PATIENTS AND METHODS A case-control study was enrolled with 96 participants; 48 wart cases and 48 healthy controls. MBL serum level assay baseline and after six settings of intralesional candida antigen injection was done by ELISA technique. MBL2 gene exon 1 codon 54 polymorphism was detected by using restriction fragment length polymorphism-polymerase chain reaction (RFLP-PCR). RESULTS A statistically significant difference in MBL serum level between wart cases and controls was found. An association between MBL2 exon1 codon 54 polymorphism and susceptibility to HPV infection and development of warts was proved. Carriage of genotype AB was more frequent wart cases (95.8%) than in controls (20.8%). No statistical significance association could be found between the therapeutic response to Candida antigen immunotherapy in wart cases and MBL as regards its serum level and genotypes. CONCLUSIONS MBL play an important role in host defense against HPV infection.
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Affiliation(s)
- Mohamed Nasr
- Dermatology, Venereology and Andrology, Faculty of Medicine, Zagazig University, Sharkia, Egypt
| | - Ayman Marie
- Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Sharkia, Egypt
| | - Ghada Boghdadi
- Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Sharkia, Egypt
| | - Rehab Elsaid
- Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Sharkia, Egypt
| | - Eman Salah
- Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Sharkia, Egypt
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Schröder-Braunstein J, Kirschfink M. Complement deficiencies and dysregulation: Pathophysiological consequences, modern analysis, and clinical management. Mol Immunol 2019; 114:299-311. [PMID: 31421540 DOI: 10.1016/j.molimm.2019.08.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 07/31/2019] [Accepted: 08/03/2019] [Indexed: 02/07/2023]
Abstract
Complement defects are associated with an enhanced risk of a broad spectrum of infectious as well as systemic or local inflammatory and thrombotic disorders. Inherited complement deficiencies have been described for virtually all complement components but can be mimicked by autoantibodies, interfering with the activity of specific complement components, convertases or regulators. While being rare, diseases related to complement deficiencies are often severe with a frequent but not exclusive manifestation during childhood. Whereas defects of early components of the classical pathway significantly increase the risk of autoimmune disorders, lack of components of the terminal pathway as well as of properdin are associated with an enhanced susceptibility to meningococcal infections. The impaired synthesis or function of C1 inhibitor results in the development of hereditary angioedema (HAE). Furthermore, complement dysregulation causes renal disorders such as atypical hemolytic uremic syndrome (aHUS) or C3 glomerulopathy (C3G) but also age-related macular degeneration (AMD). While paroxysmal nocturnal hemoglobinuria (PNH) results from the combined deficiency of the regulatory complement proteins CD55 and CD59, which is caused by somatic mutation of a common membrane anchor, isolated CD55 or CD59 deficiency is associated with the CHAPLE syndrome and polyneuropathy, respectively. Here, we provide an overview on clinical disorders related to complement deficiencies or dysregulation and describe diagnostic strategies required for their comprehensive molecular characterization - a prerequisite for informed decisions on the therapeutic management of these disorders.
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Affiliation(s)
- Jutta Schröder-Braunstein
- University of Heidelberg, Institute of Immunology, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany
| | - Michael Kirschfink
- University of Heidelberg, Institute of Immunology, Im Neuenheimer Feld 305, 69120 Heidelberg, Germany.
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Jørgensen CM, Jensen L, Christiansen M, Bjerre M, Jensen JMB, Thiel S. Pattern Recognition Molecules of the Lectin Pathway-Screening of Patients with Suspected Immunodeficiency. J Clin Immunol 2019; 39:668-677. [PMID: 31377972 DOI: 10.1007/s10875-019-00675-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 07/22/2019] [Indexed: 11/28/2022]
Abstract
PURPOSE To compare plasma concentrations of all lectin pathway (LP) pattern recognition molecules (PRMs) in patients referred for laboratory evaluation due to recurrent infections with healthy individuals. METHODS Patients were divided into categories according to referral: recurrent airway infections (RAI), recurrent abscesses, common variable immunodeficiency (CVID), lung transplantation candidates (LTX), and 'other causes'. LP PRMs (mannose-binding lectin (MBL), collectin liver 1 (CL-L1), H-ficolin, L-ficolin, M-ficolin) and C-reactive protein (CRP) were determined in 332 patients and 150 healthy blood donors using time-resolved immunofluorometric assays. RESULTS None of the LP PRMs was found in lower concentration in the patient categories; however, several PRMs were detected in higher concentrations. M-ficolin was found in higher concentrations in all patient categories. Patients suffering from RAI had higher concentrations of CL-L1 and H-ficolin. Patients suffering from abscesses exhibited higher concentrations of MBL and CL-L1, whereas LTX had higher concentrations of MBL. Patients with other causes of referral had higher concentrations of MBL and CL-L1. Prevalence of combined deficiencies of PRMs in patient categories and controls did not differ. CRP was used as a marker of ongoing inflammation and was significantly higher among all patient categories. Furthermore, CRP was found to correlate with both M-ficolin and L-ficolin. CONCLUSION The results suggest that neither single nor combined deficiencies of LP PRMs are more frequent among patients referred for an immunological evaluation than in healthy individuals. Future studies are needed and should focus on deficiencies of LP PRMs combined with deficiencies in other parts of the immune system.
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Affiliation(s)
- Clara Mistegård Jørgensen
- Department of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, 8000, Aarhus, Denmark. .,Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark.
| | - Lisbeth Jensen
- Department of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, 8000, Aarhus, Denmark
| | - Mette Christiansen
- Department of Clinical Medicine - Department of Clinical Immunology, Aarhus University Hospital, Aarhus, Denmark
| | - Mette Bjerre
- Department of Clinical Medicine - Medical Research Laboratory, Aarhus University, Aarhus, Denmark
| | - Jens Magnus Bernth Jensen
- Department of Clinical Medicine - Department of Clinical Immunology, Aarhus University Hospital, Aarhus, Denmark
| | - Steffen Thiel
- Department of Biomedicine, Aarhus University, Wilhelm Meyers Allé 4, 8000, Aarhus, Denmark
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Casals C, García-Fojeda B, Minutti CM. Soluble defense collagens: Sweeping up immune threats. Mol Immunol 2019; 112:291-304. [DOI: 10.1016/j.molimm.2019.06.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 06/12/2019] [Accepted: 06/13/2019] [Indexed: 12/14/2022]
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Levy ER, Yip WK, Super M, Ferdinands JM, Mistry AJ, Newhams MM, Zhang Y, Su HC, McLaughlin GE, Sapru A, Loftis LL, Weiss SL, Hall MW, Cvijanovich N, Schwarz A, Tarquinio KM, Mourani PM, Randolph AG. Evaluation of Mannose Binding Lectin Gene Variants in Pediatric Influenza Virus-Related Critical Illness. Front Immunol 2019; 10:1005. [PMID: 31139182 PMCID: PMC6518443 DOI: 10.3389/fimmu.2019.01005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 04/18/2019] [Indexed: 01/08/2023] Open
Abstract
Background: Mannose-binding lectin (MBL) is an innate immune protein with strong biologic plausibility for protecting against influenza virus-related sepsis and bacterial co-infection. In an autopsy cohort of 105 influenza-infected young people, carriage of the deleterious MBL gene MBL2_Gly54Asp(“B”) mutation was identified in 5 of 8 individuals that died from influenza-methicillin-resistant Staphylococcus aureus (MRSA) co-infection. We evaluated MBL2 variants known to influence MBL levels with pediatric influenza-related critical illness susceptibility and/or severity including with bacterial co-infections. Methods: We enrolled children and adolescents with laboratory-confirmed influenza infection across 38 pediatric intensive care units from November 2008 to June 2016. We sequenced MBL2 “low-producer” variants rs11003125(“H/L”), rs7096206(“Y/X”), rs1800450Gly54Asp(“B”), rs1800451Gly57Glu(“C”), rs5030737Arg52Cys(“D”) in patients and biologic parents. We measured serum levels and compared complement activity in low-producing homozygotes (“B/B,” “C/C”) to HYA/HYA controls. We used a population control of 1,142 healthy children and also analyzed family trios (PBAT/HBAT) to evaluate disease susceptibility, and nested case-control analyses to evaluate severity. Results: We genotyped 420 patients with confirmed influenza-related sepsis: 159 (38%) had acute lung injury (ALI), 165 (39%) septic shock, and 30 (7%) died. Although bacterial co-infection was diagnosed in 133 patients (32%), only MRSA co-infection (n = 33, 8% overall) was associated with death (p < 0.0001), present in 11 of 30 children that died (37%). MBL2 variants predicted serum levels and complement activation as expected. We found no association between influenza-related critical illness susceptibility and MBL2 variants using family trios (633 biologic parents) or compared to population controls. MBL2 variants were not associated with admission illness severity, septic shock, ALI, or bacterial co-infection diagnosis. Carriage of low-MBL producing MBL2 variants was not a risk factor for mortality, but children that died did have higher carriage of one or more B alleles (OR 2.3; p = 0.007), including 7 of 11 with influenza MRSA-related death (vs. 2 of 22 survivors: OR 14.5, p = 0.0002). Conclusions:MBL2 variants that decrease MBL levels were not associated with susceptibility to pediatric influenza-related critical illness or with multiple measures of critical illness severity. We confirmed a prior report of higher B allele carriage in a relatively small number of young individuals with influenza-MRSA associated death.
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Affiliation(s)
- Emily R Levy
- Division of Critical Care Medicine, Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital and Department of Anaesthesia, Harvard Medical School, Boston, MA, United States.,Divisions of Pediatric Critical Care and Pediatric Infectious Diseases, Department of Pediatrics, Mayo Clinic, Rochester, MN, United States
| | - Wai-Ki Yip
- Foundation Medicine Inc., Cambridge, MA, United States
| | - Michael Super
- Wyss Institute at Harvard University, Boston, MA, United States
| | - Jill M Ferdinands
- Influenza Division, US Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Anushay J Mistry
- Division of Critical Care Medicine, Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital and Department of Anaesthesia, Harvard Medical School, Boston, MA, United States
| | - Margaret M Newhams
- Division of Critical Care Medicine, Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital and Department of Anaesthesia, Harvard Medical School, Boston, MA, United States
| | - Yu Zhang
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Helen C Su
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Gwenn E McLaughlin
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Anil Sapru
- Critical Care Medicine Division, Department of Pediatrics, Children's Hospital of Los Angeles, University of California, Los Angeles, Los Angeles, CA, United States
| | - Laura L Loftis
- Section of Critical Care Medicine, Department of Pediatrics, Texas Children's Hospital, Houston, TX, United States
| | - Scott L Weiss
- Department of Anesthesiology and Critical Care, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Mark W Hall
- Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH, United States
| | - Natalie Cvijanovich
- Department of Pediatrics, Benioff Children's Hospital Oakland, University California San Francisco, Oakland, CA, United States
| | - Adam Schwarz
- Department of Pediatrics, Children's Hospital of Orange County, Orange, CA, United States
| | - Keiko M Tarquinio
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Children's Healthcare of Atlanta at Egleston, Emory University School of Medicine, Atlanta, GA, United States
| | - Peter M Mourani
- Section of Critical Care Medicine, Department of Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO, United States
| | | | - Adrienne G Randolph
- Division of Critical Care Medicine, Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital and Department of Anaesthesia, Harvard Medical School, Boston, MA, United States.,Department of Pediatrics, Harvard Medical School, Boston, MA, United States
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Haas OA. Primary Immunodeficiency and Cancer Predisposition Revisited: Embedding Two Closely Related Concepts Into an Integrative Conceptual Framework. Front Immunol 2019; 9:3136. [PMID: 30809233 PMCID: PMC6379258 DOI: 10.3389/fimmu.2018.03136] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 12/19/2018] [Indexed: 12/13/2022] Open
Abstract
Common understanding suggests that the normal function of a "healthy" immune system safe-guards and protects against the development of malignancies, whereas a genetically impaired one might increase the likelihood of their manifestation. This view is primarily based on and apparently supported by an increased incidence of such diseases in patients with specific forms of immunodeficiencies that are caused by high penetrant gene defects. As I will review and discuss herein, such constellations merely represent the tip of an iceberg. The overall situation is by far more varied and complex, especially if one takes into account the growing difficulties to define what actually constitutes an immunodeficiency and what defines a cancer predisposition. The enormous advances in genome sequencing, in bioinformatic analyses and in the functional in vitro and in vivo assessment of novel findings together with the availability of large databases provide us with a wealth of information that steadily increases the number of sequence variants that concur with clinically more or less recognizable immunological problems and their consequences. Since many of the newly identified hard-core defects are exceedingly rare, their tumor predisposing effect is difficult to ascertain. The analyses of large data sets, on the other hand, continuously supply us with low penetrant variants that, at least in statistical terms, are clearly tumor predisposing, although their specific relevance for the respective carriers still needs to be carefully assessed on an individual basis. Finally, defects and variants that affect the same gene families and pathways in both a constitutional and somatic setting underscore the fact that immunodeficiencies and cancer predisposition can be viewed as two closely related errors of development. Depending on the particular genetic and/or environmental context as well as the respective stage of development, the same changes can have either a neutral, predisposing and, in some instances, even a protective effect. To understand the interaction between the immune system, be it "normal" or "deficient" and tumor predisposition and development on a systemic level, one therefore needs to focus on the structure and dynamic functional organization of the entire immune system rather than on its isolated individual components alone.
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Affiliation(s)
- Oskar A. Haas
- Department of Clinical Genetics, Children's Cancer Research Institute, Vienna, Austria
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40
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Høiland II, Liang RA, Hindberg K, Latysheva N, Brekke OL, Mollnes TE, Hansen JB. Associations between complement pathways activity, mannose-binding lectin, and odds of unprovoked venous thromboembolism. Thromb Res 2018; 169:50-56. [DOI: 10.1016/j.thromres.2018.06.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 06/08/2018] [Accepted: 06/26/2018] [Indexed: 01/10/2023]
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Wu YJ, Yang X, Chen TD, Zhang ZX, You YZ, Fan ZD. Genetic polymorphisms of exon 1 of MBL2 contribute to tuberculosis risk especially in Asian populations: an updated meta-analysis of 26 studies. Infect Drug Resist 2018; 11:1237-1248. [PMID: 30154670 PMCID: PMC6108403 DOI: 10.2147/idr.s168465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background Evidence suggests that genetic variations of exon 1 of mannose-binding lectin 2 (MBL2) may contribute to tuberculosis (TB) risk. Many studies have investigated the association between MBL2 exon 1 polymorphisms (rs1800450, rs1800451, and rs5030737) and TB risk, but yielded inconclusive results. Method We conducted this meta-analysis of 26 eligible case–control studies that included 7952 cases and 9328 controls to identify the strength of association. Odds ratio (OR) and 95% CI were used to evaluate the strength of association. Statistical analyses were performed by using STATA 12.1. Results We found a statistically significant correlation between MBL2 exon 1 polymorphisms and increased TB risk among three models: allele model (O vs A: OR =1.18, 95% CI: 1.01–1.38, Pheterogeneity<0.0001, I2=85.8%), homozygote comparison (OO vs AA: OR =1.49, 95%CI: 1.02–2.18, Pheterogeneity<0.0001, I2=79.1%), dominant model (AO/OO vs AA: OR =1.20, 95% CI: 1.01–1.43, Pheterogeneity<0.0001, I2=83.5%), especially in studies based on Asian populations among five models: allele model (O vs A: OR =1.29, 95% CI: 1.11–1.51, Pheterogeneity<0.0001, I2=66.0%), homozygote comparison (OO vs AA: OR =1.67, 95% CI: 1.09–2.55, Pheterogeneity=0.008, I2=54.2%), heterozygote comparison (AO vs AA: OR =1.26, 95% CI: 1.05–1.50, Pheterogeneity=0.001, I2=62.9%), dominant model (AO/OO vs. AA: OR =1.31, 95% CI: 1.10–1.56, Pheterogeneity=0.001, I2=64.2%), and recessive model (OO vs AO/AA: OR =1.50, 95% CI: 1.01–2.22, Pheterogeneity=0.023, I2=48.0%). Meta-regression results revealed that source of controls (p=0.009), but not ethnicity (p=0.687), genotyping method (p=0.231), and sample size (p=0.451) contributed to the source of heterogeneity. Conclusion This meta-analysis suggests that MBL2 exon 1 polymorphisms may contribute to TB risk, especially in Asian populations.
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Affiliation(s)
- Yu-Jiao Wu
- Department of Pharmacy, The Third People's Hospital, Changzhou, China,
| | - Xin Yang
- Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, China,
| | - Ting-di Chen
- Department of Science and Education, The Third People's Hospital, Changzhou, China
| | - Zhi-Xin Zhang
- Department of Pulmonary Tuberculosis, The Third People's Hospital, Changzhou, China
| | - Yi-Zhong You
- Department of Pharmacy, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zheng-da Fan
- Department of Pharmacy, The Third People's Hospital, Changzhou, China,
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Dobó J, Kocsis A, Gál P. Be on Target: Strategies of Targeting Alternative and Lectin Pathway Components in Complement-Mediated Diseases. Front Immunol 2018; 9:1851. [PMID: 30135690 PMCID: PMC6092519 DOI: 10.3389/fimmu.2018.01851] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 07/26/2018] [Indexed: 12/20/2022] Open
Abstract
The complement system has moved into the focus of drug development efforts in the last decade, since its inappropriate or uncontrolled activation has been recognized in many diseases. Some of them are primarily complement-mediated rare diseases, such as paroxysmal nocturnal hemoglobinuria, C3 glomerulonephritis, and atypical hemolytic uremic syndrome. Complement also plays a role in various multifactorial diseases that affect millions of people worldwide, such as ischemia reperfusion injury (myocardial infarction, stroke), age-related macular degeneration, and several neurodegenerative disorders. In this review, we summarize the potential advantages of targeting various complement proteins with special emphasis on the components of the lectin (LP) and the alternative pathways (AP). The serine proteases (MASP-1/2/3, factor D, factor B), which are responsible for the activation of the cascade, are straightforward targets of inhibition, but the pattern recognition molecules (mannose-binding lectin, other collectins, and ficolins), the regulatory components (factor H, factor I, properdin), and C3 are also subjects of drug development. Recent discoveries about cross-talks between the LP and AP offer new approaches for clinical intervention. Mannan-binding lectin-associated serine proteases (MASPs) are not just responsible for LP activation, but they are also indispensable for efficient AP activation. Activated MASP-3 has recently been shown to be the enzyme that continuously supplies factor D (FD) for the AP by cleaving pro-factor D (pro-FD). In this aspect, MASP-3 emerges as a novel feasible target for the regulation of AP activity. MASP-1 was shown to be required for AP activity on various surfaces, first of all on LPS of Gram-negative bacteria.
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Affiliation(s)
- József Dobó
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Andrea Kocsis
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Péter Gál
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
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Hansen SWK, Aagaard JB, Bjerrum KB, Hejbøl EK, Nielsen O, Schrøder HD, Skjoedt K, Sørensen AL, Graversen JH, Henriksen ML. CL-L1 and CL-K1 Exhibit Widespread Tissue Distribution With High and Co-Localized Expression in Secretory Epithelia and Mucosa. Front Immunol 2018; 9:1757. [PMID: 30108587 PMCID: PMC6079254 DOI: 10.3389/fimmu.2018.01757] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 07/16/2018] [Indexed: 02/03/2023] Open
Abstract
Collectin liver 1 (CL-L1, alias collectin 10) and collectin kidney 1 (CL-K1, alias collectin 11) are oligomeric pattern recognition molecules associated with the complement system, and mutations in either of their genes may lead to deficiency and developmental defects. The two collectins are reportedly localized and synthesized in the liver, kidneys, and adrenals, and can be found in the circulation as heteromeric complexes (CL-LK), which upon binding to microbial high mannose-like glycoconjugates activates the complement system via the lectin activation pathway. The tissue distribution of homo- vs. heteromeric CL-L1 and -K1 complexes, the mechanism of heteromeric complex formation and in which tissues this occurs, is hitherto incompletely described. We have by immunohistochemistry using monoclonal antibodies addressed the precise cellular localization of the two collectins in the main human tissues. We find that the two collectins have widespread and almost identical tissue distribution with a high expression in epithelial cells in endo-/exocrine secretory tissues and mucosa. There is also accordance between localization of mRNA transcripts and detection of proteins, showing that local synthesis likely is responsible for peripheral localization and eventual formation of the CL-LK complexes. The functional implications of the high expression in endo-/exocrine secretory tissue and mucosa is unknown but might be associated with the activity of MASP-3, which has a similar pattern of expression and is known to potentiate the activity of the alternative complement activation pathway.
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Affiliation(s)
- Soren W K Hansen
- Institute of Cancer and Inflammation Research, University of Southern Denmark, Odense, Denmark
| | - Josephine B Aagaard
- Institute of Cancer and Inflammation Research, University of Southern Denmark, Odense, Denmark
| | - Karen B Bjerrum
- Institute of Cancer and Inflammation Research, University of Southern Denmark, Odense, Denmark
| | - Eva K Hejbøl
- Department of Pathology, Odense University Hospital, Odense, Denmark
| | - Ole Nielsen
- Department of Pathology, Odense University Hospital, Odense, Denmark
| | - Henrik D Schrøder
- Department of Pathology, Odense University Hospital, Odense, Denmark
| | - Karsten Skjoedt
- Institute of Cancer and Inflammation Research, University of Southern Denmark, Odense, Denmark
| | - Anna L Sørensen
- Institute of Cancer and Inflammation Research, University of Southern Denmark, Odense, Denmark
| | - Jonas H Graversen
- Institute of Cancer and Inflammation Research, University of Southern Denmark, Odense, Denmark
| | - Maiken L Henriksen
- Institute of Cancer and Inflammation Research, University of Southern Denmark, Odense, Denmark
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Hokazono K, Belizário FS, Portugal V, Messias-Reason I, Nisihara R. Mannose Binding Lectin and Pentraxin 3 in Patients with Diabetic Retinopathy. Arch Med Res 2018; 49:123-129. [PMID: 29961608 DOI: 10.1016/j.arcmed.2018.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 06/22/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND Mannose binding lectin (MBL) is a protein of the complement system and pentraxin-3 (PTX3) is an acute phase protein both with an important role in inflammatory diseases, such as diabetic retinopathy (DR). AIM OF THE STUDY To evaluate whether plasma MBL and PTX3 levels are associated with the development of DR and if patients with and without DR can be distinguished. METHODS The patients were divided into three groups: diabetic without DR; with mild/moderate DR, and with severe/proliferative DR. PTX3 and MBL levels were measured with enzyme-linked immunosorbent assay kits. RESULTS A total of 74 patients were included. A significant association was observed between high levels of MBL and severe DR; 47% of patients with severe/proliferative DR had high levels of MBL, whereas 12% of the patients with diabetes but no DR had high levels of MBL (p = 0.008; odds ratio [OR]: 6.06; 95% confidence interval [CI]: 1.4-25.0). High levels of MBL were more frequent in patients with severe/proliferative disease (47%) when compared to those with mild/moderate DR (20%), p = 0.04 (OR: 3.46; 95% CI: 1.0-11.8). PTX3 levels were similar among the groups and were not related to the development or severity of DR. CONCLUSION We found a significant association between high plasma MBL levels and DR development as well as with severe/proliferative DR. We observed no relationship between plasma PTX3 levels and the development or severity of DR.
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Affiliation(s)
- Kenzo Hokazono
- Department of Ophthalmology, Federal University of Paraná, Paraná, Brazil
| | | | - Vanessa Portugal
- Department of Medicine, Positivo University, Curitiba, Paraná, Brazil
| | - Iara Messias-Reason
- Laboratory of Molecular Immunopathology, Hospital de Clínicas, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - Renato Nisihara
- Department of Medicine, Positivo University, Curitiba, Paraná, Brazil; Laboratory of Molecular Immunopathology, Hospital de Clínicas, Federal University of Paraná, Curitiba, Paraná, Brazil.
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Gomaa MH, Ali SS, Fattouh AM, Hamza HS, Badr MM. MBL2 gene polymorphism rs1800450 and rheumatic fever with and without rheumatic heart disease: an Egyptian pilot study. Pediatr Rheumatol Online J 2018; 16:24. [PMID: 29653582 PMCID: PMC5899397 DOI: 10.1186/s12969-018-0245-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 04/06/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Rheumatic fever (RF) is the result of an autoimmune response to pharyngitis caused by infection with Streptococcus pyogenes. RF is most prevalent in Africa and the Middle East. Rheumatic heart disease (RHD) is the most serious complication of RF. Mannose-binding lectin 2 gene (MBL2) has been reported to be correlated with different cardiac conditions. In Egyptian patients as a new studied ethnic population, it is the first time to evaluate the association between MBL2 gene polymorphism rs1800450 and RF with and without RHD. METHODS One hundred and sixty RF patients (80 with RHD and 80 without RHD) and eighty healthy ethnically matched controls were studied. MBL2 (rs1800450) was genotyped by real-time PCR using TaqMan® allele discrimination assay. The MBL level was measured by ELISA. Westergren erythrocytes sedimentation rate (ESR), anti-streptolysin O titer (ASOT), C-reactive protein (CRP) and complements (C3 and C4) were determined. RESULTS The AA genotype with high production of MBL was associated with increased risk of RHD more than the B allele carrying subjects. However, MBL2 genotype related to the low production of MBL was more frequently observed in those patients without RHD. CONCLUSIONS Our results suggested the involvement of MBL2 (rs1800450) polymorphism and its protein in RHD pathogenesis. Also, it might be a promising future strategy to utilize this polymorphism to help differentiate patients with RHD from those without RHD.
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Affiliation(s)
- Maher Hassan Gomaa
- Biochemistry Department-Faculty of Pharmacy (Boys), Al-Azhar University, Almokhayam Aldaem Street, 6th Province - 13465 Nasr City, Cairo, Egypt
| | - Shawkey Sadik Ali
- Biochemistry Department-Faculty of Pharmacy (Boys), Al-Azhar University, Almokhayam Aldaem Street, 6th Province - 13465 Nasr City, Cairo, Egypt
| | - Aya Mohamed Fattouh
- Department of Pediatrics, Kasr Al-Aini School of Medicine, Cairo University, P.O. Box 99, Manial El-Roda, Cairo, 11553 Egypt
| | - Hala Salah Hamza
- Department of Pediatrics, Kasr Al-Aini School of Medicine, Cairo University, P.O. Box 99, Manial El-Roda, Cairo, 11553 Egypt
| | - Mohamed Mohamed Badr
- Biochemistry Department-Faculty of Pharmacy (Boys), Al-Azhar University, Almokhayam Aldaem Street, 6th Province - 13465 Nasr City, Cairo, Egypt
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Mwesigwa S, Moulds JM, Chen A, Flanagan J, Sheehan VA, George A, Hanchard NA. Whole-exome sequencing of sickle cell disease patients with hyperhemolysis syndrome suggests a role for rare variation in disease predisposition. Transfusion 2018; 58:726-735. [PMID: 29210071 PMCID: PMC5847445 DOI: 10.1111/trf.14431] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/27/2017] [Accepted: 10/30/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Hyperhemolysis syndrome (HHS) is an uncommon, but life-threatening, transfusion-related complication of red blood cell transfusion. HHS has predominantly been described in patients with sickle cell disease (SCD) and is difficult to diagnose and treat. The pathogenesis of HHS, including its occurrence in only a subset of apparently susceptible individuals, is poorly understood. We undertook whole-exome sequencing (WES) of 12 SCD-HHS patients to identify shared genetic variants that might be relevant to the development of HHS. STUDY DESIGN AND METHODS DNA from adults with SCD having at least one previous episode of HHS were subject to WES. High-quality variants were passed through a series of bioinformatics filters to identify variants that were uncommon among African populations represented in public databases. Recurrent, putative loss-of-function variants occurring in biologically plausible genes were prioritized and then genotyped in a larger, ancestry-matched cohort of non-HHS controls. RESULTS A rare, heterozygous stop-gain variant (p.Glu210Ter) in MBL2 was significantly enriched among HHS cases (p = 0.002). This variant is predicted to result in a premature termination codon that escapes nonsense-mediated mRNA decay, potentially leading to a novel phenotype. We also observed a complex insertion-deletion variant in the final exon of KLRC3 that was enriched among cases (p = 0.0019), although neither variant was found among seven pediatric SCD-HHS patients. CONCLUSION Our results suggest a potential role for rare genetic defects in the development of HHS among adult SCD patients. Such enriched variants may ultimately be useful for identifying high-risk individuals and informing therapeutic approaches in HHS.
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Affiliation(s)
- Savannah Mwesigwa
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Collaborative African Genomics Network (CAfGEN), Gaborone, Botswana
- Makerere University, Kampala, Uganda
| | - Joann M Moulds
- Scientific Support Services, LifeShare Blood Centers, Shreveport, Louisiana
| | | | - Jonathan Flanagan
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Vivien A Sheehan
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | | | - Neil A Hanchard
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas
- Collaborative African Genomics Network (CAfGEN), Gaborone, Botswana
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李 捷, 朱 玲, 左 大, 张 丽, 卢 晓, 陈 政, 周 嘉. [Plasma mannan?binding lectin and MBL?associated serine protease 2 in patients with hepatocellular carcinoma]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2017; 37:1667-1672. [PMID: 29292263 PMCID: PMC6744007 DOI: 10.3969/j.issn.1673-4254.2017.12.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To detect the plasma levels of mannan?binding lectin (MBL) and MBL?associated serine protease?2 (MASP-2) in patients with hepatocellular carcinoma (HCC) and explore their role in the tumorigenesis and progression of HCC. METHODS The plasma levels of MBL and MASP?2 were detected by enzyme?linked immunosorbent assay in 64 HCC patients and 30 healthy control subjects. The correlation of MBL and MASP?2 with the clinical parameters of HCC patients were analyzed. RESULTS The plasma levels of MBL (P=0.014) and MASP?2 (P=0.002) were significantly higher in HCC patients than in the healthy controls, but the MBL?to?MASP?2 ratio did not differ significantly between the two groups. In HCC patients, plasma MBL level was positively correlated with vascular invasion (r=0.253, P=0.047) and total bilirubin level (r=0.283, P=0.024). The plasma level of MASP?2 was positively correlated with TNM stage (r=0.276, P=0.027) and negatively correlated with plasma albumin level (r=0.?0.317, P=0.015). ROC curve analysis revealed an area under curve of 0.665 for MBL (P=0.010) and 0.694 for MASP?2 (P=0.003). The sensitivities of MBL and MASP?2 were 50% and 89.1% in the diagnosis of HCC, respectively. CONCLUSION MBL and MASP?2 are associated with the inflammatory state and disease progression in patients with HCC.
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Affiliation(s)
- 捷 李
- 南方医科大学基础医学院免疫教研室,广东 广州 510515Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
- 南方医科大学第三附属医院(广东省骨科研究院),广东 广州 510000Third Affiliated Hospital of Southern Medical University, Guangdong Academy of Orthopaedics, Guangzhou 510000, China
| | - 玲燕 朱
- 中山大学生命科学学院,广东 广州 5102750School of Life Science, Sun Yat-sen University, Guangzhou 510275, China
| | - 大明 左
- 南方医科大学基础医学院免疫教研室,广东 广州 510515Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - 丽芸 张
- 南方医科大学基础医学院免疫教研室,广东 广州 510515Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - 晓 卢
- 南方医科大学基础医学院免疫教研室,广东 广州 510515Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - 政良 陈
- 南方医科大学基础医学院免疫教研室,广东 广州 510515Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - 嘉 周
- 南方医科大学基础医学院免疫教研室,广东 广州 510515Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
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Li YL, Qi RQ, Yang Y, Wang HX, Jiang HH, Li ZX, Xiao BH, Zheng S, Hong YX, Li JH, Chen HD, Gao XH. Screening and identification of differentially expressed serum proteins in patients with vitiligo using two‑dimensional gel electrophoresis coupled with mass spectrometry. Mol Med Rep 2017; 17:2651-2659. [PMID: 29207142 DOI: 10.3892/mmr.2017.8159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 11/22/2017] [Indexed: 11/06/2022] Open
Abstract
In the clinic, vitiligo is characterized by two stages: Stable and progressive. The pathogenesis of vitiligo is still not clear. Here, we identified serum markers of vitiligo by screening for differentially expressed proteins in patients with vitiligo compared to healthy individuals. Serum samples were collected from patients with vitiligo (n=10 for both the stable and progressive stages) and healthy individuals (n=10). Two‑dimensional gel electrophoresis followed by matrix‑assisted laser desorption/ionization time‑of‑flight mass spectrometry and western blotting were used to validate the differential expression of the proteins in the serum (n=20 each, at both stages for patients and healthy individuals). A total of 48 differentially expressed proteins were identified by gel image analysis. There were 28 differentially expressed proteins in patients with progressive vitiligo (PV) and 13 differentially expressed proteins in patients with stable vitiligo (SV) compared with that in healthy individuals. Additionally, 7 differentially expressed proteins were identified in patients with PV compared with those in patients with SV. The western blotting results showed that Peroxiredoxin‑6, apolipoprotein L1, apolipoprotein E and mannose‑binding protein were differentially expressed in patients with different stages of vitiligo. Our results showed that change serum levels of several proteins might be useful as biomarkers or in understanding the pathogenesis of vitiligo.
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Affiliation(s)
- Yi-Lei Li
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Rui-Qun Qi
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yang Yang
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - He-Xiao Wang
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Hang-Hang Jiang
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zheng-Xiu Li
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Bi-Huan Xiao
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Song Zheng
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yu-Xiao Hong
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Jiu-Hong Li
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Hong-Duo Chen
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xing-Hua Gao
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Dückers G. Phänotypisierung, gezielte Diagnostik und Klassifikation der primären Immundefekte. Monatsschr Kinderheilkd 2017. [DOI: 10.1007/s00112-017-0399-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mannose-binding lectin (MBL) deficiency and tuberculosis infection in patients with ankylosing spondylitis. Clin Rheumatol 2017; 37:555-558. [PMID: 28879439 DOI: 10.1007/s10067-017-3813-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 08/28/2017] [Accepted: 08/30/2017] [Indexed: 12/16/2022]
Abstract
Ankylosing spondylitis (AS) patients may have higher prevalence of mannose-binding lectin (MBL) deficiency than normal individuals. MBL deficiency may influence susceptibility to infections. The aim of the study was to verify if MBL deficiency in patients with AS predisposes to infections. We studied 60 patients with AS diagnosed according to the Assessment of SpondyloArthritis international Society (ASAS) criteria. These patients had their MBL serum levels determinated. Twenty-five individuals were identified as MBL deficient (serum values 100 ng/mL). These patients were paired with 35 "sufficient" MBL producers (median serum level = 700 ng/mL; range 150-4100 ng/mL) for gender, age, use of medications, and tobacco exposure. Medical records of all patients were retrospectively investigated for the period of 5 years and the rate of infection occurrence was compared in the two groups. AS patients with MBL deficiency had higher number of urinary tract infections (p = 0.03; IRR = 2.33; 95% CI = 0.95-6.04) and tuberculosis (p = 0.008; IRR = 9.8; 95% CI = 1.2-441.6) than controls. Regarding tuberculosis infection, one patient (2.8%) in the MBL-sufficient group and six (24.0%) from the deficient group had this infection. The MBL-sufficient patient and five from the deficient group have had latent infections, detected in the screening tests done previous to anti-TNF drug use. The other, in the deficient group, had lung infection while not on anti-TNF treatment. Another patient, from the deficient group, has had tuberculosis skeletal infection in the past. We found a significant association between MBL deficiency and higher risk of tuberculosis and urinary tract infection in patients with AS. More studies with higher number of patients are needed to confirm this finding.
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