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Meziani S, Ferrannini G, Bjerre M, Hansen TK, Ritsinger V, Norhammar A, Gyberg V, Näsman P, Rydén L, Mellbin LG. Mannose-binding lectin does not explain the dismal prognosis after an acute coronary event in dysglycaemic patients. A report from the GAMI cohort. Cardiovasc Diabetol 2022; 21:129. [PMID: 35804351 PMCID: PMC9270763 DOI: 10.1186/s12933-022-01562-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 06/28/2022] [Indexed: 11/22/2022] Open
Abstract
Background Mannose binding lectin (MBL) has been suggested to be associated with an impaired cardiovascular prognosis in dysglycaemic conditions, but results are still contrasting. Our aims are (i) to examine whether MBL levels differ between patients with an acute myocardial infarction (MI) and healthy controls and between subgroups with different glucose tolerance status, and (ii) to investigate the relation between MBL and future cardiovascular events. Methods MBL levels were assessed at discharge and after 3 months in 161 AMI patients without any previously known glucose perturbations and in 183 age- and gender-matched controls from the Glucose metabolism in patients with Acute Myocardial Infarction (GAMI) study. Participants were classified as having dysglycaemia, i.e. type 2 diabetes or impaired glucose tolerance, or not by an oral glucose tolerance test. The primary outcome was a composite of cardiovascular events comprising cardiovascular death, AMI, stroke or severe heart failure during 11 years of follow-up. Total and cardiovascular mortality served as secondary outcomes. Results At hospital discharge patients had higher MBL levels (median 1246 μg/L) than three months later (median 575 μg/L; p < 0.01), the latter did not significantly differ from those in the controls (801 μg/L; p = 0.47). MBL levels were not affected by dysglycaemia either in patients or controls. Independent of glycaemic state, increasing MBL levels did not predict any of the studied outcomes in patients. In unadjusted analyses increasing MBL levels predicted cardiovascular events (hazard ratio HR: 1.67, 95% confidence interval CI 1.06–2.64) and total mortality (HR 1.53, 95% CI 1.12–2.10) in the control group. However, this did not remain in adjusted analyses. Conclusions Patients had higher MBL levels than controls during the hospital phase of AMI, supporting the assumption that elevated MBL reflects acute stress. MBL was not found to be independently associated with cardiovascular prognosis in patients with AMI regardless of glucose state. Supplementary Information The online version contains supplementary material available at 10.1186/s12933-022-01562-0.
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Affiliation(s)
- Sara Meziani
- Department of Medicine Solna, Karolinska Institutet, Solnavägen 1, 171 76, Stockholm, Sweden
| | - Giulia Ferrannini
- Department of Medicine Solna, Karolinska Institutet, Solnavägen 1, 171 76, Stockholm, Sweden.
| | - Mette Bjerre
- Medical/Steno Aarhus Research Laboratory, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Troels K Hansen
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark
| | - Viveca Ritsinger
- Department of Medicine Solna, Karolinska Institutet, Solnavägen 1, 171 76, Stockholm, Sweden.,Department of Research and Development, Region Kronoberg, Växjö, Sweden
| | - Anna Norhammar
- Department of Medicine Solna, Karolinska Institutet, Solnavägen 1, 171 76, Stockholm, Sweden.,Capio St. Görans Hospital, Stockholm, Sweden
| | - Viveca Gyberg
- Department of Medicine Solna, Karolinska Institutet, Solnavägen 1, 171 76, Stockholm, Sweden
| | - Per Näsman
- Center for Safety Research, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Lars Rydén
- Department of Medicine Solna, Karolinska Institutet, Solnavägen 1, 171 76, Stockholm, Sweden
| | - Linda G Mellbin
- Department of Medicine Solna, Karolinska Institutet, Solnavägen 1, 171 76, Stockholm, Sweden.,Cardiology Unit, Karolinska University Hospital, Stockholm, Sweden
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de Morais VMS, de Lima ELS, Cahú GGDOM, Lopes TRR, Gonçales JP, Muniz MTC, Coêlho MRCD. MBL2 gene polymorphisms in HHV-8 infection in people living with HIV/AIDS. Retrovirology 2018; 15:75. [PMID: 30482213 PMCID: PMC6260567 DOI: 10.1186/s12977-018-0456-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 11/16/2018] [Indexed: 02/01/2023] Open
Abstract
Background Host genetic factors such as MBL2 gene polymorphisms cause defects in the polymerization of MBL protein and result in a functional deficiency and/or in low serum levels that can influence susceptibility to various viral infections. The aim of this study was to estimate the frequency of alleles, genotypes and haplotypes related to -550, -221 and exon 1 polymorphisms of the MBL2 gene and investigate their association with HHV-8 in people living with HIV/AIDS (PLWHA), as well as the impacts on CD4 cell count and HIV viral load in HIV/HHV-8 coinfected and HIV monoinfected patients. Results A cross sectional study in PLWHA, with and without HHV-8 infection, exploring associations between different factors, was performed in the outpatient infectious and parasitic diseases clinic at a referral hospital. Genomic DNA extractions from leukocytes were performed using a commercial Wizard®Genomic DNA Purification kit (Promega, Madison, WI). The promoter region (-550 and -221) was genotyped with the TaqMan system (Applied TaqMan Biosystems® genotyping Assays), and the structural region (exon1) was genotyped with Express Sybr Greener Supermix kit (Invitrogen, USA). In total, 124 HIV/HHV-8 coinfected and 213 HIV monoinfected patients were analysed. Median TCD4 counts were significantly lower in HIV/HHV-8 coinfected patients, whereas the mean of the first and last viral load of HIV did not present significant difference. There was no difference in frequency between the LL, YY and AA genotypes between the HIV/HHV-8 coinfected or HIV monoinfected patients. However, in a multivariate analysis, coinfected patients with the intermediate expression haplotype of the MBL2 gene had an odds ratio of 3.1-fold (CI = 1.2–7.6) of their last CD4 cell count being below 350 cells/mm3. Among the coinfected individuals, four developed KS and presented the intermediate expression MBL haplotype, with three being HYA/LXA and one being LYA/LYO. Conclusions Host genetic factors, such as -550, -221 and exon 1 polymorphisms, can be related to the may modify coinfections and/or to the development clinical manifestations caused by HHV-8, especially in HIV/HHV-8 coinfected patients who present the intermediate expression haplotypes of MBL.
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Affiliation(s)
- Viviane Martha Santos de Morais
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Elker Lene Santos de Lima
- Laboratory of Molecular Biology, Center of Pediatric Oncohematology, Oswaldo Cruz University Hospital, University of Pernambuco, Recife, PE, Brazil
| | - Georgea Gertrudes de Oliveira Mendes Cahú
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Thaisa Regina Rocha Lopes
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Juliana Prado Gonçales
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil
| | - Maria Tereza Cartaxo Muniz
- Laboratory of Molecular Biology, Center of Pediatric Oncohematology, Oswaldo Cruz University Hospital, University of Pernambuco, Recife, PE, Brazil
| | - Maria Rosângela Cunha Duarte Coêlho
- Virology Division, Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, PE, 50670-901, Brazil. .,Departament of Physiology and Pharmacology, Center of Biological Sciences, Federal University of Pernambuco, Recife, PE, Brazil.
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Kahlow BS, Nisihara R, Petisco R, Utiyama SR, Messias-Reason IJ, Goeldner I, Skare TL. Cardiovascular risk and mannose binding lectin in patients with rheumatoid arthritis from southern Brazil. Int J Cardiol Heart Vasc 2018; 20:27-31. [PMID: 29992184 PMCID: PMC6036938 DOI: 10.1016/j.ijcha.2018.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/20/2018] [Accepted: 06/28/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND Mannose binding lectin (MBL) appears to be involved in susceptibility to rheumatoid arthritis (RA), in the inflammatory process and in the genesis of atherosclerotic disease. OBJECTIVE To study the association of MBL serum levels and its genotypic variation with carotid arteries intimal thickness (IMT) in RA patients from Southern Brazil. METHODS MBL serum levels, MBL2 genotyping and IMT were investigated in 90 RA patients along with their demographic, clinical and laboratory profile. MBL levels and MBL2 genotyping were evaluated in 90 healthy controls. RESULTS A significant lower MBL serum concentration was observed in patients with RA in relation to controls (528 ng/mL vs 937.5 ng/mL, p = 0.05, respectively). The median IMT in RA patients was 0.59 mm (0.51 to 0.85 mm). There was no correlation between levels of MBL with disease activity, erythrocyte sedimentation rate, autoantibodies presence or IMT (p = NS). A weak and negative correlation was found between MBL and CRP levels (Rho = -0.24; p = 0.02;). The MBL2 variant at codon 54 (variant B) and HYPA haplotype were the most frequently observed in the RA sample (67.5% and 31.7%). MBL2 wild type (A/A) were associated with lower IMT when compared with heterozygotes (A/O; p = 0.04) and low producers (O/O; p = 0.05). In addition, high producers genotypes had lower levels of CRP when compared with medium (p = 0.04) or with low producers (p = 0.05). CONCLUSION RA patients had lower MBL levels than controls. MBL were negatively associated with CRP serum levels; low MBL genotypes producers increased thickness of the IMT than high producers.
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Affiliation(s)
- Barbara S. Kahlow
- Rheumatology Service, Evangelic University Hospital of Curitiba, Curitiba, PR, Brazil
| | - Renato Nisihara
- Rheumatology Service, Evangelic University Hospital of Curitiba, Curitiba, PR, Brazil
- Department of Medicine, Positivo University, Curitiba, PR, Brazil
| | - Roberta Petisco
- Rheumatology Service, Evangelic University Hospital of Curitiba, Curitiba, PR, Brazil
| | - Shirley R.R. Utiyama
- Department of Clinical Analysis, Federal University of Paraná, Curitiba, PR, Brazil
| | | | - Isabela Goeldner
- Department of Medical Pathology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Thelma L. Skare
- Rheumatology Service, Evangelic University Hospital of Curitiba, Curitiba, PR, Brazil
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Zhang W, Bouwman KM, van Beurden SJ, Ordonez SR, van Eijk M, Haagsman HP, Verheije MH, Veldhuizen EJA. Chicken mannose binding lectin has antiviral activity towards infectious bronchitis virus. Virology 2017; 509:252-259. [PMID: 28686880 PMCID: PMC7111670 DOI: 10.1016/j.virol.2017.06.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 06/22/2017] [Accepted: 06/23/2017] [Indexed: 12/25/2022]
Abstract
Mannose binding lectin (MBL) is a collagenous C-type lectin, which plays an important role in innate immunity. It can bind to carbohydrates on the surface of a wide range of pathogens, including viruses. Here we studied the antiviral effect of recombinant chicken (rc)MBL against Infectious Bronchitis Virus (IBV), a highly contagious coronavirus of chicken. rcMBL inhibited in a dose-dependent manner the infection of BHK-21 cells by IBV-Beaudette, as detected by immunofluorescence staining of viral proteins and qPCR. ELISA and negative staining electron microscopy showed that rcMBL bound directly to IBV, resulting in the aggregation of viral particles. Furthermore, we demonstrated that MBL bound specifically to the spike S1 protein of IBV which mediates viral attachment. This subsequently blocked the attachment of S1 to IBV-susceptible cells in chicken tracheal tissues as shown in protein histochemistry. Taken together, rcMBL exhibits antiviral activity against IBV, based on a direct interaction with IBV virions.
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Affiliation(s)
- Weidong Zhang
- Division of Molecular Host Defense, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
| | - Kim M Bouwman
- Division of Pathology, Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
| | - Steven J van Beurden
- Division of Pathology, Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
| | - Soledad R Ordonez
- Division of Molecular Host Defense, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
| | - Martin van Eijk
- Division of Molecular Host Defense, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
| | - Henk P Haagsman
- Division of Molecular Host Defense, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
| | - M Hélène Verheije
- Division of Pathology, Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
| | - Edwin J A Veldhuizen
- Division of Molecular Host Defense, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands.
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Carroll GJ, Makin K, Garnsey M, Bulsara M, Carroll BV, Curtin SM, Allan EM, McLean-Tooke A, Bundell C, Kemp ML, Deshpande P, Ihdayhid D, Coleman S, Easter T, Triplett J, Disteldorf T, Marsden CH, Lucas M. Undetectable Mannose Binding Lectin and Corticosteroids Increase Serious Infection Risk in Rheumatoid Arthritis. J Allergy Clin Immunol Pract 2017. [PMID: 28634103 DOI: 10.1016/j.jaip.2017.02.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Infection is the leading cause of death in rheumatoid arthritis (RA). Corticosteroid (CS) use is a known and important risk factor for serious infections (SIs). Mannose binding lectin (MBL) is a genetically determined component of the innate immune system implicated in neonatal infections. OBJECTIVE Our aim was to determine whether MBL deficiency is a risk factor for SIs in RA and to compare it with CS use and also synthetic and biologic disease-modifying antirheumatic drug (DMARD) therapy. METHODS Data on 228 patients with RA were collected for up to 7 years (median = 5.9 years). Serum MBL concentrations were determined in all patients receiving synthetic (n = 96) or biologic (n = 132) DMARD therapy. RESULTS High rates of SIs were observed in RA irrespective of treatment (17%). Similar rates of SIs were observed in synthetic and biologic DMARD users. The rates of single and multiple SIs were similar, irrespective of the use of a biologic agent. Undetectable MBL (<56 ng/mL) concentrations and maintenance prednisolone at 10 mg per day or higher were associated with an increased risk for an SI, with incident risk ratio of 4.67 (P = .001) and 4.70 (P < .001), respectively. CONCLUSIONS Undetectable MBL and prednisolone confer a high risk for an SI. The use of biologic DMARDs did not confer substantial SI risk in this observational study. MBL deficiency is hitherto an unrecognized risk factor for an SI in RA.
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Affiliation(s)
- Graeme J Carroll
- School of Medicine, University of Notre Dame, Fremantle, Western Australia, Australia; Department of Rheumatology, Fremantle Hospital, Fremantle, Western Australia, Australia; Department of Rheumatology, Fiona Stanley Hospital, Perth, Western Australia, Australia; ArthroCare, Mt Lawley, Western Australia, Australia.
| | - Krista Makin
- Department of Rheumatology, Fiona Stanley Hospital, Perth, Western Australia, Australia
| | - Maxine Garnsey
- Department of Rheumatology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - Max Bulsara
- School of Medicine, University of Notre Dame, Fremantle, Western Australia, Australia
| | - Bronwyn V Carroll
- Department of Rheumatology, Fiona Stanley Hospital, Perth, Western Australia, Australia
| | - Shona M Curtin
- Department of Rheumatology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
| | - Erin M Allan
- ArthroCare, Mt Lawley, Western Australia, Australia
| | - Andrew McLean-Tooke
- Department of Clinical Immunology, Pathwest Laboratory Medicine, Queen Elizabeth II Medical Centre, Perth, Western Australia, Australia
| | - Christine Bundell
- Department of Clinical Immunology, Pathwest Laboratory Medicine, Queen Elizabeth II Medical Centre, Perth, Western Australia, Australia
| | - Monica L Kemp
- Department of Clinical Immunology, Pathwest Laboratory Medicine, Queen Elizabeth II Medical Centre, Perth, Western Australia, Australia
| | - Pooja Deshpande
- School of Medicine, University of Western Australia, Human Anatomy and Biology, Perth, Western Australia, Australia
| | - Dana Ihdayhid
- Department of Rheumatology, Fiona Stanley Hospital, Perth, Western Australia, Australia
| | | | - Tracie Easter
- Department of Clinical Immunology, Pathwest Laboratory Medicine, Queen Elizabeth II Medical Centre, Perth, Western Australia, Australia
| | - James Triplett
- Royal Perth Hospital, Perth, Western Australia, Australia
| | - Timothy Disteldorf
- School of Medicine, University of Western Australia, Human Anatomy and Biology, Perth, Western Australia, Australia
| | - C Helen Marsden
- Department of Rheumatology, Fremantle Hospital, Fremantle, Western Australia, Australia; Department of Rheumatology, Fiona Stanley Hospital, Perth, Western Australia, Australia
| | - Michaela Lucas
- Department of Rheumatology, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia; Department of Clinical Immunology, Pathwest Laboratory Medicine, Queen Elizabeth II Medical Centre, Perth, Western Australia, Australia; Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Western Australia, Australia; University of Western Australia, School of Medicine and Pharmacology, Pathology and Laboratory Medicine, Perth, Western Australia, Australia
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Pilling D, Galvis-Carvajal E, Karhadkar TR, Cox N, Gomer RH. Monocyte differentiation and macrophage priming are regulated differentially by pentraxins and their ligands. BMC Immunol 2017; 18:30. [PMID: 28619036 DOI: 10.1186/s12865-017-0214-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 06/08/2017] [Indexed: 01/01/2023] Open
Abstract
Background Circulating bone marrow-derived monocytes can leave the blood, enter a tissue, and differentiate into M1 inflammatory, M2a remodeling/fibrotic, or M2c/Mreg resolving/immune-regulatory macrophages. Macrophages can also convert from one of the above types to another. Pentraxins are secreted proteins that bind to, and promote efficient clearance of, microbial pathogens and cellular debris during infection, inflammation, and tissue damage. The pentraxins C-reactive protein (CRP), serum amyloid P (SAP), and pentraxin-3 (PTX3) can also bind a variety of endogenous ligands. As monocytes and macrophages are exposed to differing concentrations of pentraxins and their ligands during infection, inflammation, and tissue damage, we assessed what effect pentraxins and their ligands have on these cells. Results We found that many polarization markers do not discriminate between the effects of pentraxins and their ligands on macrophages. However, pentraxins, their ligands, and cytokines differentially regulate the expression of the hemoglobin-haptoglobin complex receptor CD163, the sialic acid-binding lectin CD169, and the macrophage mannose receptor CD206. CRP, a pentraxin generally thought of as being pro-inflammatory, increases the extracellular accumulation of the anti-inflammatory cytokine IL-10, and this effect is attenuated by GM-CSF, mannose-binding lectin, and factor H. Conclusions These results suggest that the presence of pentraxins and their ligands regulate macrophage differentiation in the blood and tissues, and that CRP may be a potent inducer of the anti-inflammatory cytokine IL-10. Electronic supplementary material The online version of this article (doi:10.1186/s12865-017-0214-z) contains supplementary material, which is available to authorized users.
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Segarra-Medrano A, Carnicer-Caceres C, Valtierra-Carmeno N, Agraz-Pamplona I, Ramos-Terrades N, Jatem Escalante E, Ostos-Roldan E. Study of the variables associated with local complement activation in IgA nephropathy. Nefrologia 2017; 37:320-329. [PMID: 28495395 DOI: 10.1016/j.nefro.2016.11.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 11/13/2016] [Accepted: 11/17/2016] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVES 1. To identify the variables that are associated with urinary levels of properdin, MBL, C4d, and C5b-9 in patients with idiopathic IgA nephropathy. 2. To analyse whether urinary levels of MBL and/or C4d are useful for identifying the presence of mesangial deposits of C4d/MBL. PATIENTS AND METHOD A total of 96 patients with IgA nephropathy were studied. Demographic, clinical and biochemical variables were recorded at the time of diagnosis. Renal lesions were quantified using the Oxford classification. Immunohistochemical staining for MBL, MASP-2, properdin, C4d, and C5b-9 was performed in kidney biopsies, and in urine, the levels of properdin, MBL, C4d and C5b-9 were determined. RESULTS In multivariate analysis, the independent predictors of C4d and MBL levels in urine were the mesangial deposits of each protein and, to a lesser extent, the urinary protein excretion. The independent predictors of urinary levels of C5b-9 were MBL properdin and proteinuria. Urinary excretion of C4d had a sensitivity of 90% (95% CI: 58,7 to 99) and a specificity of 73% (95% CI: 54-87) for detecting mesangial C4d deposits, and the level of MBL had a sensitivity of 83.9% (95% CI: 62-95) and a specificity of 81.6% (95% CI: 65-92) for identifying mesangial deposits of MBL. CONCLUSION The main predictor of urinary concentration of C4d and MBL was the presence of their respective mesangial deposits. Urine MBL may contribute to complement activation in the tubular luz through the lectin pathway. Urinary levels of MBL and C4d could be sensitive and specific biomarkers for the identification of patients with mesangial deposits of MBL and C4d.
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Affiliation(s)
- Alfons Segarra-Medrano
- Servicio de Nefrología, Hospital Vall d'Hebron, Universidad Autónoma de Barcelona, Barcelona, España.
| | - Clara Carnicer-Caceres
- Servicio de Bioquímica, Hospital Vall d'Hebron, Universidad Autónoma de Barcelona, Barcelona, España
| | - Naiara Valtierra-Carmeno
- Servicio de Nefrología, Hospital Vall d'Hebron, Universidad Autónoma de Barcelona, Barcelona, España
| | - Irene Agraz-Pamplona
- Servicio de Nefrología, Hospital Vall d'Hebron, Universidad Autónoma de Barcelona, Barcelona, España
| | - Natalia Ramos-Terrades
- Servicio de Nefrología, Hospital Vall d'Hebron, Universidad Autónoma de Barcelona, Barcelona, España
| | - Elías Jatem Escalante
- Servicio de Nefrología, Hospital Vall d'Hebron, Universidad Autónoma de Barcelona, Barcelona, España
| | - Elena Ostos-Roldan
- Servicio de Nefrología, Hospital Vall d'Hebron, Universidad Autónoma de Barcelona, Barcelona, España
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van de Vosse E, van Ostaijen-Ten Dam MM, Vermaire R, Verhard EM, Waaijer JL, Bakker JA, Bernards ST, Eibel H, van Tol MJ, van Dissel JT, Haverkamp MH. Recurrent respiratory tract infections (RRTI) in the elderly: A late onset mild immunodeficiency? Clin Immunol 2017; 180:111-119. [PMID: 28487087 DOI: 10.1016/j.clim.2017.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 01/27/2017] [Accepted: 05/05/2017] [Indexed: 01/27/2023]
Abstract
Elderly with late-onset recurrent respiratory tract infections (RRTI) often have specific anti-polysaccharide antibody deficiency (SPAD). We hypothesized that late-onset RRTI is caused by mild immunodeficiencies, such as SPAD, that remain hidden through adult life. We analyzed seventeen elderly RRTI patients and matched controls. We determined lymphocyte subsets, expression of BAFF receptors, serum immunoglobulins, complement pathways, Pneumovax-23 vaccination response and genetic variations in BAFFR and MBL2. Twelve patients (71%) and ten controls (59%) had SPAD. IgA was lower in patients than in controls, but other parameters did not differ. However, a high percentage of both patients (53%) and controls (65%) were MBL deficient, much more than in the general population. Often, MBL2 secretor genotypes did not match functional deficiency, suggesting that functional MBL deficiency can be an acquired condition. In conclusion, we found SPAD and MBL deficiency in many elderly, and conjecture that at least the latter arises with age.
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Affiliation(s)
- Esther van de Vosse
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands.
| | | | - René Vermaire
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Els M Verhard
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Jacqueline L Waaijer
- Department of Paediatrics, Laboratory for Immunology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jaap A Bakker
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Sandra T Bernards
- Department of Medical Microbiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Hermann Eibel
- Center for Chronic Immunodeficiency, University Medical Center Freiburg, Freiburg, Germany
| | - Maarten J van Tol
- Department of Paediatrics, Laboratory for Immunology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jaap T van Dissel
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Margje H Haverkamp
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
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Cartwright M, Rottman M, Shapiro NI, Seiler B, Lombardo P, Gamini N, Tomolonis J, Watters AL, Waterhouse A, Leslie D, Bolgen D, Graveline A, Kang JH, Didar T, Dimitrakakis N, Cartwright D, Super M, Ingber DE. A Broad-Spectrum Infection Diagnostic that Detects Pathogen-Associated Molecular Patterns (PAMPs) in Whole Blood. EBioMedicine 2016; 9:217-227. [PMID: 27333027 PMCID: PMC4972566 DOI: 10.1016/j.ebiom.2016.06.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 06/08/2016] [Accepted: 06/09/2016] [Indexed: 01/01/2023] Open
Abstract
Background Blood cultures, and molecular diagnostic tests that directly detect pathogen DNA in blood, fail to detect bloodstream infections in most infected patients. Thus, there is a need for a rapid test that can diagnose the presence of infection to triage patients, guide therapy, and decrease the incidence of sepsis. Methods An Enzyme-Linked Lectin-Sorbent Assay (ELLecSA) that uses magnetic microbeads coated with an engineered version of the human opsonin, Mannose Binding Lectin, containing the Fc immunoglobulin domain linked to its carbohydrate recognition domain (FcMBL) was developed to quantify pathogen-associated molecular patterns (PAMPs) in whole blood. This assay was tested in rats and pigs to explore whether it can detect infections and monitor disease progression, and in prospectively enrolled, emergency room patients with suspected sepsis. These results were also compared with data obtained from non-infected patients with or without traumatic injuries. Results The FcMBL ELLecSA was able to detect PAMPS present on, or released by, 85% of clinical isolates representing 47 of 55 different pathogen species, including the most common causes of sepsis. The PAMP assay rapidly (< 1 h) detected the presence of active infection in animals, even when blood cultures were negative and bacteriocidal antibiotics were administered. In patients with suspected sepsis, the FcMBL ELLecSA detected infection in 55 of 67 patients with high sensitivity (> 81%), specificity (> 89%), and diagnostic accuracy of 0·87. It also distinguished infection from trauma-related inflammation in the same patient cohorts with a higher specificity than the clinical sepsis biomarker, C-reactive Protein. Conclusion The FcMBL ELLecSA-based PAMP assay offers a rapid, simple, sensitive and specific method for diagnosing infections, even when blood cultures are negative and antibiotic therapy has been initiated. It may help to triage patients with suspected systemic infections, and serve as a companion diagnostic to guide administration of emerging dialysis-like sepsis therapies. The FcMBL ELLecSA-based PAMP assay offers a rapid, simple, sensitive and specific method for diagnosing infections. The FcMBL ELLecSA distinguished infection from trauma-related inflammation. It can detect infection even when blood cultures are negative and antibiotic therapy has been initiated.
Current diagnostics of sepsis using blood cultures and molecular diagnostic tests fail to detect bloodstream infections in most infected patients, whereas the inflammatory biomarkers of infection that have a higher sensitivity of detection, lack specificity in distinguishing infection from trauma-related inflammation. Therefore we have leveraged a broad-spectrum pathogen binding opsonin and developed a rapid test to directly diagnose the presence of infection in the blood to triage patients and guide antibiotic therapy.
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Affiliation(s)
- Mark Cartwright
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Martin Rottman
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States; Hôpitaux Universitaires Paris Ile de France Ouest (AP-HP), UMR INSERM U1173-UFR SSSV Université de Versailles St Quentin en Yvelines, Montigny, France
| | - Nathan I Shapiro
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Benjamin Seiler
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Patrick Lombardo
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Nazita Gamini
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Julie Tomolonis
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Alexander L Watters
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Anna Waterhouse
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Dan Leslie
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Dana Bolgen
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Amanda Graveline
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Joo H Kang
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Tohid Didar
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Nikolaos Dimitrakakis
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - David Cartwright
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Michael Super
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States
| | - Donald E Ingber
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA, United States; Vascular Biology Program, Boston Children's Hospital and Harvard Medical School, Boston, MA, United States; Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA, United States.
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10
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Atan O, Kucukcelebi A, Atik T, Ozkınay F. Mannose binding lectin codon 54 polymorphism and susceptibility to recurrent respiratory tract infections in children: A meta-analysis. Int J Pediatr Otorhinolaryngol 2016; 81:41-5. [PMID: 26810288 DOI: 10.1016/j.ijporl.2015.11.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 11/24/2015] [Accepted: 11/25/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND There have been studies focused on mannose binding lectin (MBL) polymorphism and susceptibility to recurrent respiratory tract infections (RRTI) with inconclusive results. This present study is a meta-analysis of possible MBL and RRTI association in children. METHODS A literature search was performed using Medline and PubMed and abstracts were reviewed for relevance. Any study was considered to be eligible for inclusion if it met the following criteria: the MBL gene polymorphism at codon 54 was determined, the outcome was recurrent respiratory tract infection in children and there were at least two comparison groups. The odds ratios(OR) of the genetic MBL polymorphisms were combined and calculated, and the forest plots of the OR value distributions were drawn. Chi-squared testing of heterogeneity was done (p<0.001). RESULTS Five eligible studies were included in the study. There has been heterogeneity between the studies (p=0.001). Our results did not show any association between MBL genotypes AA, BB, AB, alleles A and B and RRTI. CONCLUSIONS Our meta-analysis of accessible, published data has demonstrated no statistically significant association between MBL2 genotype and recurrent respiratory tract infection in children. Summary of the article's main point Here are discrepancies regarding the importance of MBL polymorphism and its impact on recurrent respiratory tract infections. Our meta analysis did not find statistically significant association between MBL codon 54 polymorphism and recurrent respiratory tract infection in children.
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Affiliation(s)
- Ozlem Atan
- Acıbadem University, Faculty of Arts and Sciences, Department of Molecular Biology and Genetics, Turkey.
| | - Ahmet Kucukcelebi
- Acıbadem Bodrum Hospital, Division of Aesthetic, Plastic and Reconstructive Surgery, Muğla, Turkey
| | - Tahir Atik
- Ege University Faculty of Medicine, Department of Pediatrics, Pediatric Genetic Subdivision, Izmir, Turkey
| | - Ferda Ozkınay
- Ege University Faculty of Medicine, Department of Pediatrics, Pediatric Genetic Subdivision, Izmir, Turkey
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11
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Epp Boschmann S, Goeldner I, Tuon FF, Schiel W, Aoyama F, de Messias-Reason IJ. Mannose-binding lectin polymorphisms and rheumatoid arthritis: A short review and meta-analysis. Mol Immunol 2015; 69:77-85. [PMID: 26608926 DOI: 10.1016/j.molimm.2015.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 09/22/2015] [Accepted: 10/17/2015] [Indexed: 12/31/2022]
Abstract
Mannose-binding lectin (MBL) is a pattern recognition receptor of the lectin pathway of complement system. MBL binds to carbohydrates on microorganism's surfaces leading to complement activation, opsonization and phagocytosis. Polymorphisms in the MBL gene (MBL2) are associated with variations on MBL serum levels and with the susceptibility to various infectious and autoimmune diseases. The involvement of the lectin pathway in rheumatoid arthritis (RA) has been demonstrated by several studies and although MBL has been considered to have a dual role in the pathogenesis of the disease, the association between MBL and RA remains inconclusive. In an attempt to clarify this relationship, we developed this short review summarizing accumulated evidences in regard to MBL and RA and a meta-analysis to evaluate the influence of MBL2 polymorphisms on the susceptibility to RA. Among a total of 217 articles that were identified following a predefined search strategy on PubMed, Scopus, Scielo, EMBASE and Cochrane databases, only 13 met all inclusion criteria and were included in the meta-analysis. Data assessment was conducted by three independent investigators and presented in odds ratio (OR) and 95% confidence intervals (CIs) using forest plot charts. Both heterogeneity and publication bias were analyzed. The results of the meta-analysis evidenced that MBL2 low producing OO and XX genotypes do not confer higher risk to RA, even when data were analyzed according to cohort's ethnicity. Further studies are needed in order to clarify the importance of other genes of the lectin pathway in the pathogenesis of RA.
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Affiliation(s)
- Stefanie Epp Boschmann
- Laboratory of Molecular Immunopatology-Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná, Rua General Carneiro, 181, Alto da Glória, Curitiba, PR, Brazil.
| | - Isabela Goeldner
- Laboratory of Molecular Immunopatology-Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná, Rua General Carneiro, 181, Alto da Glória, Curitiba, PR, Brazil
| | - Felipe Francisco Tuon
- Division of Infectious Diseases, Hospital de Clínicas, Universidade Federal do Paraná, Rua General Carneiro, 181, Alto da Glória, Curitiba, PR, Brazil
| | - Wagner Schiel
- Laboratory of Molecular Immunopatology-Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná, Rua General Carneiro, 181, Alto da Glória, Curitiba, PR, Brazil
| | - Fernanda Aoyama
- Laboratory of Molecular Immunopatology-Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná, Rua General Carneiro, 181, Alto da Glória, Curitiba, PR, Brazil
| | - Iara J de Messias-Reason
- Laboratory of Molecular Immunopatology-Department of Clinical Pathology, Hospital de Clínicas, Universidade Federal do Paraná, Rua General Carneiro, 181, Alto da Glória, Curitiba, PR, Brazil.
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12
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Guenther S, Loebel M, Mooslechner AA, Knops M, Hanitsch LG, Grabowski P, Wittke K, Meisel C, Unterwalder N, Volk HD, Scheibenbogen C. Frequent IgG subclass and mannose binding lectin deficiency in patients with chronic fatigue syndrome. Hum Immunol 2015; 76:729-35. [PMID: 26429318 DOI: 10.1016/j.humimm.2015.09.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 07/17/2015] [Accepted: 09/27/2015] [Indexed: 01/04/2023]
Abstract
Chronic fatigue syndrome (CFS) is a severe disease characterized by various symptoms of immune dysfunction. CFS onset is typically with an infection and many patients suffer from frequently recurrent viral or bacterial infections. Immunoglobulin and mannose binding lectin (MBL) deficiency are frequent causes for increased susceptibility to infections. In this study we retrospectively analysed 300 patients with CFS for immunoglobulin and MBL levels, and B-cell subset frequencies. 25% of the CFS patients had decreased serum levels of at least one antibody class or subclass with IgG3 and IgG4 subclass deficiencies as most common phenotypes. However, we found elevated immunoglobulin levels with an excess of IgM and IgG2 in particular in another 25% of patients. No major alteration in numbers of B cells and B-cell subsets was seen. Deficiency of MBL was found in 15% of the CFS patients in contrast to 6% in a historical control group. In a 2nd cohort of 168 patients similar frequencies of IgG subclass and MBL deficiency were found. Thus, humoral immune defects are frequent in CFS patients and are associated with infections of the respiratory tract.
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Affiliation(s)
- Sabrina Guenther
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Madlen Loebel
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Agnes A Mooslechner
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Michael Knops
- Center for Stroke Research Berlin, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Leif G Hanitsch
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Patricia Grabowski
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Kirsten Wittke
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Christian Meisel
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany; Labor Berlin GmbH, Immunology Department, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Nadine Unterwalder
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany; Labor Berlin GmbH, Immunology Department, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Hans-Dieter Volk
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Carmen Scheibenbogen
- Institute of Medical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charité Universitätsmedizin Berlin, Berlin, Germany.
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13
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Patel PK, Hindala M, Kohli B, Hajela K. Divalent metal ions binding properties of goat serum mannose binding lectin. Int J Biol Macromol 2015; 80:324-7. [PMID: 26126945 DOI: 10.1016/j.ijbiomac.2015.06.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 06/23/2015] [Accepted: 06/25/2015] [Indexed: 11/17/2022]
Abstract
Mannose binding lectin (MBL) is a collectin with C-terminus Carbohydrate Recognition Domain (CRD) which binds with pathogen and arbitrate functions like activation of complement pathway, opsonization etc. The CRD required Ca(2+) ions to recognize the sugar moieties. In the present study the binding properties of CRD with divalent ions were characterized by Electron Paramagnetic Resonance (EPR) spectroscopy. The results revealed that the metal binding site of CRD is of approximately 1 Å diameter and ions greater than the size are not able to enter.
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Affiliation(s)
| | - Maliram Hindala
- School of Life Sciences, Devi Ahilya University, Indore, India
| | - Bavita Kohli
- School of Life Sciences, Devi Ahilya University, Indore, India; Department of Bio-Technology, ISLE, IPS Academy, Indore, India
| | - Krishnan Hajela
- School of Life Sciences, Devi Ahilya University, Indore, India.
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14
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Peterson BC, Peatman E, Ourth DD, Waldbieser GC. Effects of a phytogenic feed additive on growth performance, susceptibility of channel catfish to Edwardsiella ictaluri and levels of mannose binding lectin. Fish Shellfish Immunol 2015; 44:21-25. [PMID: 25659231 DOI: 10.1016/j.fsi.2015.01.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 01/22/2015] [Accepted: 01/26/2015] [Indexed: 06/04/2023]
Abstract
A study was conducted to investigate the effect of a phytogenic feed additive (Digestarom® P.E.P. MGE; containing the essential oils carvacrol, thymol, anethol, and limonene) on growth performance and disease susceptibility to Edwardsiella ictaluri. Two hundred and fifty juvenile channel catfish, Ictalurus punctatus (7.2 ± 0.1 g) were allotted into the following treatments: Control (floating diet) and EO (floating diet supplemented with essential oils). The fish were fed their respective diets for 6 weeks. At the end of the study, all fish were exposed to virulent E. ictaluri by bath immersion (1.9 × 10(7) cfu/mL; final concentration). Plasma and tissue samples were taken to quantify protein and mRNA expression levels of mannose binding lectin (MBL). Weight gain and food conversion ratio were similar between treatments. After exposing fish to virulent E. ictaluri and monitoring mortality for 21 days, survival was 43% higher (69.5 vs 48.4%) in fish fed EO compared to fish not treated with EO (P < 0.05). One day after challenge, plasma MBL levels were down-regulated in the non-treated fish compared to non-challenged fish. In the EO fish, MBL levels were similar to non-challenged fish but significantly higher than non-treated fed fish (P < 0.001). By d 7, plasma MBL levels increased in non-treated fed fish to levels observed in the EO and non-challenged fish. On d 14, MBL mRNA levels were upregulated 15-fold in fish fed EO compared to non-treated fed fish and non-challenged fish (P < 0.001). The results demonstrate that essential oils improved survival of channel catfish challenged with E. ictaluri. Mechanisms through which essential oils improve survival may involve MBL.
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Affiliation(s)
- Brian C Peterson
- USDA/ARS Warmwater Aquaculture Research Unit, Thad Cochran National Warmwater Aquaculture Center, PO Box 38, Stoneville, MS 38776, USA.
| | - E Peatman
- The Fish Molecular Genetics and Biotechnology Laboratory, Department of Fisheries and Allied Aquacultures and Program of Cell and Molecular Biosciences, Aquatic Genomics Unit, Auburn University, Auburn, AL 36849, USA
| | - D D Ourth
- Department of Biological Sciences, The University of Memphis, Life Sciences Bldg., Memphis, TN 38152-3560, USA
| | - G C Waldbieser
- USDA/ARS Warmwater Aquaculture Research Unit, Thad Cochran National Warmwater Aquaculture Center, PO Box 38, Stoneville, MS 38776, USA
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15
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Sildorf SM, Eising S, Hougaard DM, Mortensen HB, Skogstrand K, Pociot F, Johannesen J, Svensson J. Differences in MBL levels between juvenile patients newly diagnosed with type 1 diabetes and their healthy siblings. Mol Immunol 2014; 62:71-6. [PMID: 24972325 DOI: 10.1016/j.molimm.2014.06.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 05/30/2014] [Accepted: 06/02/2014] [Indexed: 01/04/2023]
Abstract
The incidence of type 1 diabetes (T1D) has during the last few decades been increasing in children and juveniles. Multi-factorial courses combining genetic disposition and environmental factors might be in play, and through the years, there has been a mounting interest in the innate immune system's role in the development of T1D. The aim of this study was to determine mannose binding lectin (MBL) levels in newly diagnosed children with T1D (n=481) over a period of 10 years (1997-2005) and to compare these levels with corresponding levels in their healthy siblings (n=479). Furthermore, the aims were to evaluate if MBL-levels in patients and siblings were influenced by season, age autoimmunity and/or changed over time. The study found that MBL levels differed between patients and their healthy siblings when adjusted for age, gender, season and period. More patients than siblings had MBL levels above 0.8 μg/ml, associated with high producing MBL genotypes, and the elevated MBL levels were associated with high levels of four T1D related cytokines (IL-1β, IL-12, IL-18 and TNF-α). MBL levels increased during the study period and siblings had seasonal variance in concentrations with the lowest level during wintertime (Dec-Feb). In conclusion, more patients than siblings had a high MBL level, and high levels of MBL were related to high levels of T1D specific cytokines, supporting a role of the innate immune system and MBL on the risk of developing T1D.
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Affiliation(s)
| | | | - David M Hougaard
- Danish Center for Neonatal Screening, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen S, Denmark
| | - Henrik Bindesbøl Mortensen
- Pediatric Department, Herlev Hospital, Herlev Ringvej 75, 2730 Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kristin Skogstrand
- Danish Center for Neonatal Screening, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen S, Denmark
| | - Flemming Pociot
- Pediatric Department, Herlev Hospital, Herlev Ringvej 75, 2730 Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jesper Johannesen
- Pediatric Department, Herlev Hospital, Herlev Ringvej 75, 2730 Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jannet Svensson
- Pediatric Department, Herlev Hospital, Herlev Ringvej 75, 2730 Herlev, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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16
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Teodorof C, Divakar S, Soontornniyomkij B, Achim CL, Kaul M, Singh KK. Intracellular mannose binding lectin mediates subcellular trafficking of HIV-1 gp120 in neurons. Neurobiol Dis 2014; 69:54-64. [PMID: 24825317 DOI: 10.1016/j.nbd.2014.05.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 04/26/2014] [Accepted: 05/02/2014] [Indexed: 01/19/2023] Open
Abstract
Human immunodeficiency virus-1 (HIV-1) enters the brain early during infection and leads to severe neuronal damage and central nervous system impairment. HIV-1 envelope glycoprotein 120 (gp120), a neurotoxin, undergoes intracellular trafficking and transport across neurons; however mechanisms of gp120 trafficking in neurons are unclear. Our results show that mannose binding lectin (MBL) that binds to the N-linked mannose residues on gp120, participates in intravesicular packaging of gp120 in neuronal subcellular organelles and also in subcellular trafficking of these vesicles in neuronal cells. Perinuclear MBL:gp120 vesicular complexes were observed and MBL facilitated the subcellular trafficking of gp120 via the endoplasmic reticulum (ER) and Golgi vesicles. The functional carbohydrate recognition domain of MBL was required for perinuclear organization, distribution and subcellular trafficking of MBL:gp120 vesicular complexes. Nocodazole, an agent that depolymerizes the microtubule network, abolished the trafficking of MBL:gp120 vesicles, suggesting that these vesicular complexes were transported along the microtubule network. Live cell imaging confirmed the association of the MBL:gp120 complexes with dynamic subcellular vesicles that underwent trafficking in neuronal soma and along the neurites. Thus, our findings suggest that intracellular MBL mediates subcellular trafficking and transport of viral glycoproteins in a microtubule-dependent mechanism in the neurons.
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Affiliation(s)
- C Teodorof
- Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - S Divakar
- Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - B Soontornniyomkij
- Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - C L Achim
- Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - M Kaul
- Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA; Sanford-Burnham Medical Research Institute, 10901 N Torrey Pines Rd, La Jolla, CA, USA
| | - K K Singh
- Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA.
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17
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Col-Araz N, Oguzkan-Balci S, Baspinar O, Sever T, Balat A, Pehlivan S. Mannose binding lectin and macrophage migration inhibitory factor gene polymorphisms in Turkish children with cardiomyopathy: no association with MBL2 codon 54 A/B genotype, but an association between MIF -173 CC genotype. Int J Med Sci 2012; 9:506-12. [PMID: 22927777 PMCID: PMC3427956 DOI: 10.7150/ijms.4787] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Accepted: 08/19/2012] [Indexed: 11/05/2022] Open
Abstract
Myocardial inflammation is one of the commonest mechanisms in cardiomyopathy (CMP). Mannose binding lectin (MBL) is a key molecule in innate immunity, while macrophage migration inhibitory factor (MIF) is a constitutive element of the host defenses. We investigated the possible association between polymorphisms of MBL2 and MIF genes and CMP in Turkish children. Twenty-children with CMP and 30 healthy controls were analyzed for codon 54 A/B polymorphism in MBL, and -173 G/C polymorphism in MIF genes by using PCR-RFLP methods. No significant difference was found between genotypes and alleles of MBL2 gene codon 54 A/B polymorphism in patients and controls (p>0.05). However, serum uric acid levels was found higher in dilated CMP patients with AA genotype. Frequency of MIF -173 CC genotype was significantly higher in patients (p<0.05), and sodium levels were higher in patients with MIF -173 CC genotype. This study is the first to investigate the MBL and MIF gene polymorphisms in Turkish children with CMP. We conclude that CC genotype of MIF (-173) polymorphism may be a risk factor for CMP patients. However, further studies with larger samples are needed to address the exact role of this polymorphism in CMP.
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Affiliation(s)
- Nilgun Col-Araz
- University of Gaziantep, Faculty of Medicine, Department of Pediatrics, Gaziantep, Turkey
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