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Mao Y, Wei H, Gong Y, Peng L, Chen Y. Association of MBL2 gene polymorphisms and MBL levels with dilated cardiomyopathy in a Chinese Han population. BMC Med Genomics 2024; 17:11. [PMID: 38167099 PMCID: PMC10763076 DOI: 10.1186/s12920-023-01787-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 12/20/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND It has been reported that Mannose-binding lectin 2 (MBL2) gene polymorphisms and expression levels are related to dilated cardiomyopathy (DCM). This study aimed to investigate the potential association between MBL2 gene polymorphisms and the pathogenesis of DCM. METHODS Five single nucleotide polymorphisms (SNPs) of the MBL2 gene were genotyped in 440 DCM patients and 532 controls in Southwest China. A luciferase reporter assay was used to detect the transcriptional activity the different genotypes. MBL serum levels, left ventricle ejection fraction (LVEF) and lower left ventricular end-diastolic diameter (LVEDD) were measured. RESULTS The rs11003125 C allele increased the transcriptional activity of the MBL2 promoter compared with the rs11003125 G allele. The rs11003125 CC carriers had higher MBL serum levels, LVEF and LVEDD than the rs11003125 CG and GG carriers. CONCLUSIONS Our study first revealed that MBL2 polymorphisms and serum MBL levels were associated with DCM. Allele C in rs11003125 of MBL2 may upregulate the expression levels of MBL. High serum MBL levels may be a protective factor in DCM pathogenesis.
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Affiliation(s)
- Yujie Mao
- Institute of Dermatology and Venereology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Hong Wei
- Department of Ophthalmology and Vision Research Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Yugang Gong
- Institute of Dermatology and Venereology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Lei Peng
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, China.
| | - Yu Chen
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, China.
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Jadhav S, Nema V. Association of Viral and Host Genetic Architecture with the Status of Neurocognitive Disorder in HIV-Infected Individuals. AIDS Res Hum Retroviruses 2023; 39:688-698. [PMID: 37335040 DOI: 10.1089/aid.2022.0099] [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] [Indexed: 06/21/2023] Open
Abstract
The polymorphisms in host genes such as CCR5, CCR2, stromal derived factor (SDF), and MBL (mannose-binding lectin) as well as the viral nef gene have been shown to influence human immunodeficiency virus (HIV) infection, followed by the development of HIV-associated neurocognitive disorder (HAND). In this preliminary study with a limited number of samples, we have tried to associate the genetic polymorphism from the host and viral genetic factors with the neurocognitive status along with immuno-virological parameters. The total RNA was isolated from 10 unlinked plasma samples containing 5 samples from each group with and without HAND based on the International HIV Dementia Scale (IHDS) score <9.5 and >9.5, respectively. The CCR5, CCR2, SDF, MBL, and HIV nef genes were amplified and digested with restriction enzymes, except for the nef gene amplicon. Restrictions fragment length polymorphism (RFLP) was used to determine whether allelic variations were present in the digested host gene products, while sequencing was done for HIV nef amplicons without digestion. CCR5 delta 32 heterozygous variants were present in two samples from the HAND group. Three samples with HAND showed SDF-1 3' heterozygous allelic variant, while the MBL-2 gene presented with a homozygous mutant allele (D/D) in codon 52, heterozygous mutant allele (A/B) in codon 54, and codon 57 (A/C) for all samples except IHDS-2 irrespective of dementia status. Furthermore, amino acid alignment of Nef sequences confirmed the heterogeneity, while prediction of the human leukocyte antigen binding epitopes further explored its effect on functional motifs with variable binding efficiency such as epitopes GAFDLSFFL (aa 83) and LTFGWCFKL (aa 138) binding with HLA molecules at 60% and 80%, respectively. Thus, host genetics evidently influence predisposition to HIV infection and HAND. The genetic variability in the nef gene from both groups resulted in altering the functionality of specific domains and showing its impact on the progression of the disease, which needs to be explored.
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Affiliation(s)
- Sushama Jadhav
- Division of Molecular Biology, Indian Council of Medical Research, National AIDS Research Institute, Pune, India
- Symbiosis International University, Pune, India
| | - Vijay Nema
- Division of Molecular Biology, Indian Council of Medical Research, National AIDS Research Institute, Pune, India
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Oguz R, Ciftci HS, Gokce M, Ogret Y, Karadeniz S, Pehlivan S, Ozdilli K, Karakas Z, Karaman S, Aydın F. The association of HLA-DRB1 alleles and MBL2 gene variant in pediatric acute lymphoblastic leukemia patients. Hematol Transfus Cell Ther 2023:S2531-1379(23)00042-1. [PMID: 37117150 DOI: 10.1016/j.htct.2023.02.002] [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: 08/23/2022] [Revised: 12/08/2022] [Accepted: 02/09/2023] [Indexed: 04/30/2023] Open
Abstract
INTRODUCTION Epidemiologic studies on pediatric acute lymphoblastic leukemias (ALL) have been conducted to evaluate the possible risk factors including genetic, infectious and environmental factors with the objective of idenfying the etiology. Mannose-binding lectin 2 (MBL2) plays an important role in first-line immune defense. HLA DRB1 alleles play a role in presentation of peptides to T cells and in activation of the adaptive immune response. OBJECTIVE In our study, we aimed to investigate both the MBL2 gene variant and HLA-DRB1 alleles in pediatric ALL patients. MATERIALS In this study, 86 high-risk ALL patients and 100 controls were included. Polymerase Chain Reaction (PCR)-Restriction Fragment Length Polymorphism (PCR-RFLP) and PCR-sequence specific primer (SSP) methods were used for detection of polymorphism of the MBL2 and HLA-DRB1 alleles, respectively. RESULTS The frequency of the MBL2 AB genotype was lower in female ALL patients, compared to male ALL patients (p = 0.034). An association was found between the MBL2 BB genotype and DRB1*07 and among patients with the MBL2 BB genotype; those who also carried the DRB1*07 and *04 alleles were significantly higher than those without the DRB1*07 and *04 alleles. (p = 0.048, p = 0.022, respectively). CONCLUSION This is the first study suggesting that the MBL2 BB genotype in association with the DRB1*07 or co-inheritance of the HLA-DRB1*04 and HLA DRB1*07 may have an impact on the etiopathogenesis of the disease.
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Affiliation(s)
- Rustu Oguz
- Istanbul T.C. Demiroğlu Bilim University, Faculty of Medicine, Istanbul, Turkey.
| | | | - Muge Gokce
- Istanbul Yeni Yuzyıl University, Gaziosmanpasa Hospital, Istanbul, Turkey
| | - Yeliz Ogret
- Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Sedat Karadeniz
- Kadir Has University, Graduate School of Science and Engineering, Istanbul, Turkey
| | - Sacide Pehlivan
- Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Kursat Ozdilli
- Medipol University, Faculty of Medicine, Istanbul, Turkey
| | - Zeynep Karakas
- Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Serap Karaman
- Division of Hematology and Oncology, Department of Pediatrics, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
| | - Filiz Aydın
- Istanbul T.C. Demiroğlu Bilim University, Faculty of Medicine, Istanbul, Turkey
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Nørgaard-Pedersen C, Steffensen R, Kesmodel US, Christiansen OB. A combination of the HLA-DRB1*03 phenotype and low plasma mannose-binding lectin predisposes to autoantibody formation in women with recurrent pregnancy loss. Front Immunol 2023; 14:1069974. [PMID: 36776871 PMCID: PMC9909406 DOI: 10.3389/fimmu.2023.1069974] [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: 10/14/2022] [Accepted: 01/17/2023] [Indexed: 01/27/2023] Open
Abstract
Introduction It is documented that a series of autoantibodies can be detected with increased frequency in women with recurrent pregnancy loss (RPL) and they may impact the pregnancy prognosis negatively. It is unknown whether the autoantibodies per se or the basic immune disturbances underlying autoantibody production, are the reason for this association. Our group has previously found that some genetically determined immunological biomarkers are associated with RPL and the same biomarkers are also in various degrees known to predispose to autoantibody production. The aim of this study was to clarify whether the RPL-associated immunogenetic biomarkers are associated with positivity for three major classes of autoantibodies associated with RPL. Methods In 663 patients with RPL in whom we had results for HLA-DRB1 typing and plasma mannose-binding lectin (p-MBL) measurement, it was investigated whether there is a correlation between positivity for the autoantibodies: anticardiolipin antibodies, β2 glycoprotein I antibodies, and lupus anticoagulant (jointly called antiphospholipid antibodies), thyroid-peroxidase antibodies, and antinuclear antibodies and each of the HLA-DRB1 alleles HLA-DRB1*03 or HLA-DRB1*07 either alone or in combination with low p-MBL defined as ≤500 µg/l. Results Although slightly higher frequencies of positivity of two or more autoantibodies were seen in patients with either p-MBL ≤500 µg/l or being positive for HLA-DRB1*03, none were significantly associated. However, in patients with the combination of low p-MBL and HLA-DRB1*03, presence of at least one autoantibody was significantly more frequent than in patients with no such combination (OR= 2.4; 95% CI 1.2-5.0, p = 0.01). In an analysis of which autoantibodies were most strongly associated with the low p-MBL/HLA-DRB1*03 combination, antinuclear antibodies were significantly more frequent in these patients (OR 2.0; 95% CI 1.0-3.9, p=0.05) whereas the other autoantibodies were also positively but more weakly associated with this combination. Discussion In conclusion, to clarify the pathogenetic background, underlying immunogenetic factors should be examined in autoantibody positive RPL patients (as well as other patients with autoimmune diseases) but the genetic background may be complex.
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Affiliation(s)
- Caroline Nørgaard-Pedersen
- Centre for Recurrent Pregnancy loss of Western Denmark, Department of Obstetrics and Gynaecology, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Rudi Steffensen
- Department of Clinical Immunology, Aalborg University Hospital, Aalborg, Denmark
| | - Ulrik Schiøler Kesmodel
- Centre for Recurrent Pregnancy loss of Western Denmark, Department of Obstetrics and Gynaecology, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Ole Bjarne Christiansen
- Centre for Recurrent Pregnancy loss of Western Denmark, Department of Obstetrics and Gynaecology, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Quantitative Proteomic Analysis Reveals Yeast Cell Wall Products Influence the Serum Proteome Composition of Broiler Chickens. Int J Mol Sci 2022; 23:ijms231911844. [PMID: 36233150 PMCID: PMC9569515 DOI: 10.3390/ijms231911844] [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: 08/26/2022] [Revised: 09/22/2022] [Accepted: 09/27/2022] [Indexed: 11/17/2022] Open
Abstract
With an ever-growing market and continual financial pressures associated with the prohibition of antibiotic growth promoters, the poultry industry has had to rapidly develop non-antibiotic alternatives to increase production yields. A possible alternative is yeast and its derivatives, such as the yeast cell wall (YCW), which have been proposed to confer selected beneficial effects on the host animal. Here, the effect of YCW supplementation on the broiler chicken was investigated using a quantitative proteomic strategy, whereby serum was obtained from three groups of broilers fed with distinct YCW-based Gut Health Products (GHP) or a control basal diet. Development of a novel reagent enabled application of ProteoMiner™ technology for sample preparation and subsequent comparative quantitative proteomic analysis revealed proteins which showed a significant change in abundance (n = 167 individual proteins; p < 0.05); as well as proteins which were uniquely identified (n = 52) in, or absent (n = 37) from, GHP-fed treatment groups versus controls. An average of 7.1% of proteins showed changes in abundance with GHP supplementation. Several effects of these GHPs including immunostimulation (via elevated complement protein detection), potential alterations in the oxidative status of the animal (e.g., glutathione peroxidase and catalase), stimulation of metabolic processes (e.g., differential abundance of glyceraldehyde-3-phosphate dehydrogenase), as well as evidence of a possible hepatoprotective effect (attenuated levels of serum α-glutathione s-transferase) by one GHP feed supplement, were observed. It is proposed that specific protein detection may be indicative of GHP efficacy to stimulate broiler immune status, i.e., may be biomarkers of GHP efficacy. In summary, this work has developed a novel technology for the preparation of high dynamic range proteomic samples for LC-MS/MS analysis, is part of the growing area of livestock proteomics and, importantly, provides evidential support for beneficial effects that GHP supplementation has on the broiler chicken.
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Poulsen K, Mathlouthi N, Bargen J. Meta-analysis on the effect of dietary β-mannanase on intestinal integrity in broiler chickens. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2022.100307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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7
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Brix N, Glerup M, Thiel S, Mistegaard CE, Skals RG, Berntson L, Fasth A, Nielsen SM, Nordal E, Rygg M, Hasle H, Albertsen BK, Herlin T. M-ficolin: a valuable biomarker to identify leukaemia from juvenile idiopathic arthritis. Arch Dis Child 2022; 107:371-376. [PMID: 34686494 PMCID: PMC8938675 DOI: 10.1136/archdischild-2021-322114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 09/06/2021] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Distinction on clinical grounds between acute lymphoblastic leukaemia presenting with arthropathy (ALLarthropathy) and juvenile idiopathic arthritis (JIA) is difficult, as the clinical and paraclinical signs of leukaemia may be vague. The primary aim was to examine the use of lectin complement pathway proteins as markers to differentiate ALLarthropathy from JIA. The secondary aims were to compare the protein levels at baseline and follow-up in a paired number of children with ALL and to examine the correlation with haematology counts, erythrocyte sedimentation reaction (ESR), C-reactive protein (CRP), blasts, relapse and death. STUDY DESIGN In this observational study, we measured M-ficolin, CL-K1 and MASP-3 in serum from children with ALL (n=151) and JIA (n=238) by time-resolved immunofluorometric assays. Logistic regression was used for predictions of ALL risk, considering the markers as the respective exposures. We performed internal validation using repeated '10-fold cross-validation' with 100 repetitions computing the area under the curve (AUC) as well as positive and negative predictive values in order to evaluate the predictive performance. RESULTS The level of M-ficolin was higher in JIA than ALLtotal and the ALLarthropathy subgroup. The M-ficolin level normalised after remission of ALL. M-ficolin could differentiate ALL from JIA with an AUC of 94% and positive predictive value (PPV) of 95%, exceeding CRP and haemoglobin. In a dichotomised predictive model with optimal cut-offs for M-ficolin, platelets and haemoglobin, AUC was 99% and PPV 98% in detecting ALL from JIA. CONCLUSION M-ficolin is a valuable marker to differentiate the child with ALL from JIA.
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Affiliation(s)
- Ninna Brix
- Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
- Department of Pediatrics and Adolescent Medicine, Aalborg University Hospital, Aalborg, Denmark
| | - Mia Glerup
- Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital Skejby, Aarhus, Denmark
| | - Steffen Thiel
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Clara Elbæk Mistegaard
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Department of Rheumatology, Aarhus University Hospital Skejby, Aarhus, Denmark
| | | | - Lillemor Berntson
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Anders Fasth
- Department of Pediatrics, University of Gothenburg Institute of Clinical Sciences, Goteborg, Sweden
| | - Susan Mary Nielsen
- Department of Pediatrics, Copenhagen University Hospital, Copenhagen, Denmark
| | - Ellen Nordal
- Department of Pediatrics, University Hospital of North Norway, Tromsø, Norway
- Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Marite Rygg
- Department of Clinical and Molecular Medicine, NTNU - Norwegian University of Science and Technology, Trondheim, Norway
- Department of Pediatrics, St. Olavs Hospital, Trondheim, Norway
| | - Henrik Hasle
- Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Birgitte Klug Albertsen
- Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Troels Herlin
- Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
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Bao T, Wang S, Yang Y, He L, Han L, Zhai T, Chen J, Zhou Q, Zhao X, Lian F, Zhao L, Tong X. Exploring the Regulation of Jiangtang Tiaozhi Formula on the Biological Network of Obese T2DM Complicated With Dyslipidemia Based on Clinical Transcriptomics. Front Endocrinol (Lausanne) 2022; 13:817147. [PMID: 35957821 PMCID: PMC9357946 DOI: 10.3389/fendo.2022.817147] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/13/2022] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To use systems biology to explore the biomolecular network mechanism of the Jiangtang Tiaozhi Recipe (JTTZR) in the intervention of obese Type 2 diabetes (T2DM) patients with dyslipidemia. METHODS Twelve patients with obese type 2 diabetes mellitus and dyslipidemia (traditional Chinese medicine syndrome differentiation was excess heat syndrome of the stomach and intestines) were treated with JTTZR for 24 weeks, and 12 patients were included in the healthy control group. First, blood samples from 6 patients in each group (disease group before treatment, disease group after treatment, and healthy control group) were collected for RNA microarray analysis. Quantitative polymerase chain reaction (qPCR) was used to validate these target lncRNAs and mRNAs. Finally, a detailed analysis of the differences in the disease group before treatment vs. the healthy control group and the disease group after treatment vs. the disease group before treatment was undertaken. In addition, we focused on disease-related pathways and analyzed the correlation between the differential expression of target lncRNAs and clinical indicators. RESULTS (1) Disease group before treatment vs. healthy control group: There were 557 up-regulated lncRNAs, 273 down-regulated lncRNAs, 491 up-regulated mRNAs, and 1639 down-regulated mRNAs. GO analysis and pathway analysis showed that T2DM may be related to cell proliferation in the forebrain, post-embryonic organ development, calcium signaling pathway. qPCR validation showed that the expression of XLOC-005590 and HNF1A-AS1 as target lncRNAs increased, and this was verified by gene chip analysis. (2) Disease group after treatment vs. disease group before treatment: 128 lncRNAs were upregulated, 32 lncRNAs were downregulated, 45 mRNAs were upregulated, and 140 mRNAs were downregulated. GO analysis and pathway analysis showed that JTTZR may treat T2DM through endosome transport, the insulin signaling pathway, and glycine, serine, and threonine metabolism. qPCR validation showed that in the healthy control group, XLOC_005590 was upregulated, whereas the downstream gene (ECI2) was downregulated in the disease group before treatment. However, after 24 weeks of intervention with JTTZR, XLOC_005590 was downregulated and ECI2 was upregulated compared with the disease group before treatment (0 weeks) (P <0.05). CONCLUSION JTTZR may interfere in patients with obese T2DM with dyslipidemia by regulating pathways such as fatty acid degradation, glycolysis/gluconeogenesis, and pyruvate metabolism.
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Affiliation(s)
- Tingting Bao
- Graduate College, Beijing University of Chinese Medicine, Beijing, China
- Institute of Metabolic Diseases, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Song Wang
- Department of Geriatrics, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yingying Yang
- Graduate College, Beijing University of Chinese Medicine, Beijing, China
- Institute of Metabolic Diseases, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Lisha He
- Medical History Teaching and Research Department, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Lin Han
- Institute of Metabolic Diseases, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tiangang Zhai
- Graduate College, Beijing University of Chinese Medicine, Beijing, China
- Institute of Metabolic Diseases, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jia Chen
- Graduate College, Gansu University of Chinese Medicine, Lanzhou, China
| | - Qiang Zhou
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xiyan Zhao
- Institute of Metabolic Diseases, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fengmei Lian
- Institute of Metabolic Diseases, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Fengmei Lian, ; Linhua Zhao, ; Xiaolin Tong,
| | - Linhua Zhao
- Institute of Metabolic Diseases, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Fengmei Lian, ; Linhua Zhao, ; Xiaolin Tong,
| | - Xiaolin Tong
- Institute of Metabolic Diseases, Guang’ anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Fengmei Lian, ; Linhua Zhao, ; Xiaolin Tong,
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Dengue and the Lectin Pathway of the Complement System. Viruses 2021; 13:v13071219. [PMID: 34202570 PMCID: PMC8310334 DOI: 10.3390/v13071219] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/17/2021] [Accepted: 06/19/2021] [Indexed: 12/15/2022] Open
Abstract
Dengue is a mosquito-borne viral disease causing significant health and economic burdens globally. The dengue virus (DENV) comprises four serotypes (DENV1-4). Usually, the primary infection is asymptomatic or causes mild dengue fever (DF), while secondary infections with a different serotype increase the risk of severe dengue disease (dengue hemorrhagic fever, DHF). Complement system activation induces inflammation and tissue injury, contributing to disease pathogenesis. However, in asymptomatic or primary infections, protective immunity largely results from the complement system’s lectin pathway (LP), which is activated through foreign glycan recognition. Differences in N-glycans displayed on the DENV envelope membrane influence the lectin pattern recognition receptor (PRR) binding efficiency. The important PRR, mannan binding lectin (MBL), mediates DENV neutralization through (1) a complement activation-independent mechanism via direct MBL glycan recognition, thereby inhibiting DENV attachment to host target cells, or (2) a complement activation-dependent mechanism following the attachment of complement opsonins C3b and C4b to virion surfaces. The serum concentrations of lectin PRRs and their polymorphisms influence these LP activities. Conversely, to escape the LP attack and enhance the infectivity, DENV utilizes the secreted form of nonstructural protein 1 (sNS1) to counteract the MBL effects, thereby increasing viral survival and dissemination.
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Maeda T, Takahashi S, Yoshida T, Shimamura S, Takaki Y, Nagai Y, Toyoda A, Suzuki Y, Arimoto A, Ishii H, Satoh N, Nishiyama T, Hasebe M, Maruyama T, Minagawa J, Obokata J, Shigenobu S. Chloroplast acquisition without the gene transfer in kleptoplastic sea slugs, Plakobranchus ocellatus. eLife 2021; 10:60176. [PMID: 33902812 PMCID: PMC8079154 DOI: 10.7554/elife.60176] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 04/01/2021] [Indexed: 12/14/2022] Open
Abstract
Some sea slugs sequester chloroplasts from algal food in their intestinal cells and photosynthesize for months. This phenomenon, kleptoplasty, poses a question of how the chloroplast retains its activity without the algal nucleus. There have been debates on the horizontal transfer of algal genes to the animal nucleus. To settle the arguments, this study reported the genome of a kleptoplastic sea slug, Plakobranchus ocellatus, and found no evidence of photosynthetic genes encoded on the nucleus. Nevertheless, it was confirmed that light illumination prolongs the life of mollusk under starvation. These data presented a paradigm that a complex adaptive trait, as typified by photosynthesis, can be transferred between eukaryotic kingdoms by a unique organelle transmission without nuclear gene transfer. Our phylogenomic analysis showed that genes for proteolysis and immunity undergo gene expansion and are up-regulated in chloroplast-enriched tissue, suggesting that these molluskan genes are involved in the phenotype acquisition without horizontal gene transfer.
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Affiliation(s)
- Taro Maeda
- National Institute for Basic Biology, Okazaki, Japan
| | - Shunichi Takahashi
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyu, Okinawa, Japan
| | - Takao Yoshida
- Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
| | - Shigeru Shimamura
- Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
| | - Yoshihiro Takaki
- Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
| | - Yukiko Nagai
- Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
| | | | | | - Asuka Arimoto
- Marine Biological Laboratory, Hiroshima University, Hiroshima, Japan
| | | | - Nori Satoh
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Tomoaki Nishiyama
- Research Center for Experimental Modeling of Human Disease, Kanazawa University, Kanazawa, Japan
| | - Mitsuyasu Hasebe
- National Institute for Basic Biology, Okazaki, Japan.,SOKENDAI, the Graduate University for Advanced Studies, Okazaki, Japan
| | | | - Jun Minagawa
- National Institute for Basic Biology, Okazaki, Japan.,SOKENDAI, the Graduate University for Advanced Studies, Okazaki, Japan
| | - Junichi Obokata
- Kyoto Prefectural University, Kyoto, Japan.,Setsunan Universiy, Hirakata, Japan
| | - Shuji Shigenobu
- National Institute for Basic Biology, Okazaki, Japan.,SOKENDAI, the Graduate University for Advanced Studies, Okazaki, Japan
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Giang NT, van Tong H, Quyet D, Hoan NX, Nghia TH, Nam NM, Hung HV, Anh DT, Van Mao C, Son HA, Meyer CG, Velavan TP, Toan NL. Complement protein levels and MBL2 polymorphisms are associated with dengue and disease severity. Sci Rep 2020; 10:14923. [PMID: 32913345 PMCID: PMC7484760 DOI: 10.1038/s41598-020-71947-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 08/17/2020] [Indexed: 02/07/2023] Open
Abstract
The complement system may be crucial during dengue virus infection and progression to severe dengue. This study investigates the role of MBL2 genetic variants and levels of MBL in serum and complement proteins in Vietnamese dengue patients. MBL2 genotypes (- 550L/H, MBL2 codon 54), MBL2 diplotypes (XA/XO, YA/XO) and MBL2 haplotypes (LXPB, HXPA, XO) were associated with dengue in the study population. The levels of complement factors C2, C5, and C5a were higher in dengue and dengue with warning signs (DWS) patients compared to those in healthy controls, while factor D levels were decreased in dengue and DWS patients compared to the levels determined in healthy controls. C2 and C5a levels were associated with the levels of AST and ALT and with WBC counts. C9 levels were negatively correlated with ALT levels and WBC counts, and factor D levels were associated with AST and ALT levels and with platelet counts. In conclusions, MBL2 polymorphisms are associated with dengue in the Vietnamese study population. The levels of the complement proteins C2, C4b, C5, C5a, C9, factor D and factor I are modulated in dengue patients during the clinical course of dengue.
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Affiliation(s)
- Ngo Truong Giang
- Department of Pathophysiology, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Hanoi, Vietnam.,Department of Biology and Medical Genetics, Vietnam Military Medical University, Hanoi, Vietnam
| | - Hoang van Tong
- Department of Pathophysiology, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Hanoi, Vietnam. .,Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 222 Phung Hung, Ha Dong, Hanoi, Vietnam.
| | - Do Quyet
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 222 Phung Hung, Ha Dong, Hanoi, Vietnam
| | - Nghiem Xuan Hoan
- 108 Military Central Hospital, Hanoi, Vietnam.,Vietnamese-German Center for Medical Research, VG-CARE, Hanoi, Vietnam
| | - Trinh Huu Nghia
- 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Nguyen Minh Nam
- 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Hoang Vu Hung
- 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Do Tuan Anh
- 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Can Van Mao
- Department of Pathophysiology, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Hanoi, Vietnam
| | - Ho Anh Son
- Department of Pathophysiology, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Hanoi, Vietnam.,Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 222 Phung Hung, Ha Dong, Hanoi, Vietnam
| | - Christian G Meyer
- Vietnamese-German Center for Medical Research, VG-CARE, Hanoi, Vietnam.,Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany.,Duy Tan University, Faculty of Medicine, Da Nang, Vietnam
| | - Thirumalaisamy P Velavan
- Vietnamese-German Center for Medical Research, VG-CARE, Hanoi, Vietnam.,Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany.,Duy Tan University, Faculty of Medicine, Da Nang, Vietnam
| | - Nguyen Linh Toan
- Department of Pathophysiology, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Hanoi, Vietnam.
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12
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József J, Debreczeni N, Eszenyi D, Borbás A, Juhász L, Somsák L. Synthesis and photoinitiated thiol–ene reactions of exo-mannals – a new route to C-β-d-mannosyl derivatives. RSC Adv 2020; 10:34825-34836. [PMID: 35514420 PMCID: PMC9056834 DOI: 10.1039/d0ra07115c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 09/06/2020] [Indexed: 01/19/2023] Open
Abstract
Syntheses of acyl protected exo-mannal derivatives were developed starting from O-peracylated mannopyranoses via the corresponding anhydro-aldose tosylhydrazones under modified Bamford–Stevens conditions. The synthesis of analogous O-peralkylated (benzylated and isopropylenated) derivatives was carried out from pyranoid and furanoid mannonolactones using methylene transfer reagents. Photoinitiated thiol–ene additions of these exo-mannals resulted in the corresponding C-(mannopyranosyl/mannofuranosyl)methyl sulfides in medium to good yields with exclusive regio- and β(d) stereoselectivities. A synthetic procedure was elaborated for O-peracylated exo-mannals. Thiol-ene additions to pyranoid and furanoid exo-mannals gave mannosylmethyl sulfide type adducts with exclusive regio- and β(d)-stereoselectivities including disaccharide mimetics.![]()
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Affiliation(s)
- János József
- Department of Organic Chemistry
- University of Debrecen
- H-4002 Debrecen
- Hungary
- University of Debrecen
| | - Nóra Debreczeni
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4002 Debrecen
- Hungary
- University of Debrecen
| | - Dániel Eszenyi
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4002 Debrecen
- Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4002 Debrecen
- Hungary
| | - László Juhász
- Department of Organic Chemistry
- University of Debrecen
- H-4002 Debrecen
- Hungary
| | - László Somsák
- Department of Organic Chemistry
- University of Debrecen
- H-4002 Debrecen
- Hungary
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13
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Auriti C, Prencipe G, Inglese R, Moriondo M, Nieddu F, Mondì V, Longo D, Bucci S, Del Pinto T, Timelli L, Di Ciommo VM. Mannose Binding Lectin, S100 B Protein, and Brain Injuries in Neonates With Perinatal Asphyxia. Front Pediatr 2020; 8:527. [PMID: 33042903 PMCID: PMC7527601 DOI: 10.3389/fped.2020.00527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 07/24/2020] [Indexed: 11/13/2022] Open
Abstract
Perinatal asphyxia triggers an acute inflammatory response in the injured brain. Complement activation and neuroinflammation worsen brain damage after a systemic ischemia/reperfusion insult. The increase of mannose binding lectin (MBL) during asphyxia may contribute to the brain damage, via activation of the complement lectin pathway. The possible role of MBL2 gene variants in influencing the severity of post-asphyxia brain injuries is still unexplored. This retrospective study included 53 asphyxiated neonates: 42 underwent therapeutic hypothermia (TH) and 11 did not because they were admitted to the NICU later than 6 h after the hypoxic insult. Blood samples from TH-treated and untreated patients were genotyped for MBL2 gene variants, and biomarker plasma levels (MBL and S100 B protein) were measured at different time points: during hypothermia, during rewarming, and at 7-10 days of life. The timing of blood sampling, except for the T1 sample, was the same in untreated infants. Highest (peak) levels of MBL and MBL2 genotypes were correlated to neuroimaging brain damage or death and long-term neurodevelopmental delay. MBL2 wild-type genotype was associated with the highest MBL levels and worst brain damage on MRI (p = 0.046) at 7-10 days after hypoxia. MBL increased in both groups and S100B decreased, slightly more in treated than in untreated neonates. The progressive increase of MBL (p = 0.08) and to be untreated with TH (p = 0.08) increased the risk of brain damage or death at 7-10 days of life, without affecting neurodevelopmental outcomes at 1 year. The effect of TH on MBL plasma profiles is uncertain.
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Affiliation(s)
- Cinzia Auriti
- Neonatal Intensive Care Unit, Department of Medical and Surgical Neonatology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Giusi Prencipe
- Laboratory of Rheumatology Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Rita Inglese
- Laboratory of Chemical Chemistry, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Maria Moriondo
- Laboratory of Immunology, Department of Pediatrics, Anna Meyer Children's University Hospital, Florence, Italy
| | - Francesco Nieddu
- Laboratory of Immunology, Department of Pediatrics, Anna Meyer Children's University Hospital, Florence, Italy
| | - Vito Mondì
- Neonatal Intensive Care Unit, Department of Medical and Surgical Neonatology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.,Neonatology and Neonatal Intensive Care Unit, Policlinico Casilino Hospital, Rome, Italy
| | - Daniela Longo
- Neuroimaging Unit, Imaging Department, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Silvia Bucci
- Clinical Psychology Unit, Department of Neurosciences, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Tamara Del Pinto
- Neonatal Intensive Care Unit, Department of Medical and Surgical Neonatology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Laura Timelli
- Neonatal Intensive Care Unit, Department of Medical and Surgical Neonatology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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14
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Glerup M, Thiel S, Rypdal V, Arnstad ED, Ekelund M, Peltoniemi S, Aalto K, Rygg M, Nielsen S, Fasth A, Berntson L, Nordal E, Herlin T. Complement lectin pathway protein levels reflect disease activity in juvenile idiopathic arthritis: a longitudinal study of the Nordic JIA cohort. Pediatr Rheumatol Online J 2019; 17:63. [PMID: 31500626 PMCID: PMC6734250 DOI: 10.1186/s12969-019-0367-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 09/05/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To determine the serum levels of the lectin pathway proteins early in the disease course and 17 years after disease onset and to correlate the protein levels to markers of disease activity in participants from a population-based Nordic juvenile idiopathic arthritis (JIA) cohort. Additionally, to assess the predictive value of lectin pathway proteins with respect to remission status. METHODS A population-based cohort study of consecutive cases of JIA with a disease onset from 1997 to 2000 from defined geographical areas of Finland, Sweden, Norway and Denmark with 17 years of follow-up was performed. Clinical characteristics were registered and H-ficolin, M-ficolin, MASP-1, MASP-3, MBL and CL-K1 levels in serum were analyzed. RESULTS In total, 293 patients with JIA were included (mean age 23.7 ± 4.4 years; mean follow-up 17.2 ± 1.7 years). Concentrations of the lectin protein levels in serum were higher at baseline compared to the levels 17 years after disease onset (p ≤ 0.006, n = 164). At baseline, the highest level of M-ficolin was observed in systemic JIA. Further, high M-ficolin levels at baseline and at 17-year follow-up were correlated to high levels of ESR. In contrast, high MASP-1 and MASP-3 tended to correlate to low ESR. CL-K1 showed a negative correlation to JADAS71 at baseline. None of the protein levels had prognostic abilities for remission status 17 years after disease onset. CONCLUSION We hypothesize that increased serum M-ficolin levels are associated with higher disease activity in JIA and further, the results indicate that MASP-1, MASP-3 and CL-K1 are markers of inflammation.
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Affiliation(s)
- Mia Glerup
- Department of Pediatrics, Aarhus University Hospital, Palle Juul-Jensens Blvd. 99, 8200 Aarhus N, Denmark
| | - Steffen Thiel
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Veronika Rypdal
- Department of Pediatrics, University Hospital of North Norway, and Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Ellen Dalen Arnstad
- Department of Clinical and Molecular Medicine, NTNU - Norwegian University of Science and Technology, Trondheim, Norway
- Department of Pediatrics, Levanger Hospital, Nord-Trøndelag Hospital Trust, Levanger, Norway
| | - Maria Ekelund
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
- Department of Pediatrics, Ryhov County Hospital, Jonkoping, Sweden
| | - Suvi Peltoniemi
- New Children’s Hospital, Pediatric Research Center, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - Kristiina Aalto
- New Children’s Hospital, Pediatric Research Center, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - Marite Rygg
- Department of Clinical and Molecular Medicine, NTNU - Norwegian University of Science and Technology, Trondheim, Norway
- Department of Pediatrics, St. Olavs Hospital, Trondheim, Norway
| | - Susan Nielsen
- Department of Pediatrics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Anders Fasth
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lillemor Berntson
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
| | - Ellen Nordal
- Department of Pediatrics, University Hospital of North Norway, and Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Troels Herlin
- Department of Pediatrics, Aarhus University Hospital, Palle Juul-Jensens Blvd. 99, 8200 Aarhus N, Denmark
| | - for the Nordic Study Group of Pediatric Rheumatology (NoSPeR)
- Department of Pediatrics, Aarhus University Hospital, Palle Juul-Jensens Blvd. 99, 8200 Aarhus N, Denmark
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Department of Pediatrics, University Hospital of North Norway, and Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Clinical and Molecular Medicine, NTNU - Norwegian University of Science and Technology, Trondheim, Norway
- Department of Pediatrics, Levanger Hospital, Nord-Trøndelag Hospital Trust, Levanger, Norway
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
- Department of Pediatrics, Ryhov County Hospital, Jonkoping, Sweden
- New Children’s Hospital, Pediatric Research Center, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
- Department of Clinical and Molecular Medicine, NTNU - Norwegian University of Science and Technology, Trondheim, Norway
- Department of Pediatrics, St. Olavs Hospital, Trondheim, Norway
- Department of Pediatrics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
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15
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Barros KMA, Ribeiro Paulino M, Batista MIHDM, Gueiros LAM, Souza PRED, Leão JC, de Albuquerque Tavares Carvalho A. Absence of influence of polymorphisms of the MBL2 gene in oral infections by HSV-1 in individuals with HIV. Braz J Microbiol 2019; 50:663-668. [PMID: 31001794 DOI: 10.1007/s42770-019-00074-6] [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: 10/08/2018] [Accepted: 02/25/2019] [Indexed: 11/30/2022] Open
Abstract
Polymorphisms in the structural gene MBL-2 (mannose-binding lectin-2) may result in low MBL serum concentration, associated with greater susceptibility to infection. The study evaluated the effects of MBL-2 polymorphisms with the oral manifestations of the HSV in human immunodeficiency virus (HIV)-infected patients. An observational case-control study was carried out, with the sample comprising 64 HIV+ and 65 healthy individuals. The signs and symptoms of HSV oral infection were evaluated, and oral mucosa buccal smears were collected. Polymorphisms of the MBL-2 gene and HSV-1 DNA were amplified through real-time PCR. The data revealed that of 64 HIV+, 29.6% presented signs and symptoms of HSV oral infection. Of these, the HSV-1 DNA was detected through real-time PCR in 21% of cases, and in 13.3% of asymptomatic individuals. There was no statistically significant difference between the symptomatic (p = 1) and the asymptomatic (p = 0.52) individuals, HIV+ and HIV-. Different genotypes (AA, A0, or 00) did not contribute to the oral manifestation of HSV in the HIV+ patients (p = 0.81) or HIV- (p = 0.45). There was no statistically significant difference in either group (p = 0.52). No significant association was identified between the MBL-2 gene polymorphisms in the oral manifestation of HSV infection. However, further studies are recommended with larger population groups before discarding this interrelationship.
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Affiliation(s)
| | - Marcília Ribeiro Paulino
- University Federal of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235, Recife, PE, 50670-901, Brazil.
| | | | | | | | - Jair Carneiro Leão
- University Federal of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235, Recife, PE, 50670-901, Brazil
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16
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Makin K, Easter T, Kemp M, Kendall P, Bulsara M, Coleman S, Carroll GJ. Undetectable mannose binding lectin is associated with HRCT proven bronchiectasis in rheumatoid arthritis (RA). PLoS One 2019; 14:e0215051. [PMID: 30970022 PMCID: PMC6457565 DOI: 10.1371/journal.pone.0215051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 03/26/2019] [Indexed: 11/24/2022] Open
Abstract
Aim The aim of this study was to ascertain whether mannose binding lectin deficiency is implicated in coexistent rheumatoid arthritis and bronchiectasis and to determine whether undetectable mannose binding lectin confers poorer long-term survival in coexistent rheumatoid arthritis and bronchiectasis or in rheumatoid arthritis in general. Materials and methods A retrospective audit was conducted in a rheumatoid arthritis cohort in which mannose binding lectin had been measured by enzyme linked immunosorbent assay from 2007–11. Rheumatoid arthritis patients with physician diagnosed HRCT proven bronchiectasis were recruited during this time and compared to those with uncomplicated rheumatoid arthritis. Survival from disease onset was recorded in October 2018. Kaplan-Meier survival estimates were performed to assess mortality over time in the two groups. Log rank tests were used for equality of survivor functions. Results The two groups were demographically comparable. A higher frequency of undetectable mannose binding lectin was observed in coexistent rheumatoid arthritis and bronchiectasis (37.5%) compared to uncomplicated rheumatoid arthritis, (8.9%, P = 0.005). Undetectable mannose binding lectin correlated with a strong trend toward poor survival in rheumatoid arthritis overall (P = 0.057). Cox regression analysis however, showed no difference in the hazard ratio for survival between the two groups when corrected for age, gender, prednisolone use ever, rheumatoid factor status and the full range of MBL concentrations. Conclusion In summary, undetectable mannose binding lectin is associated with coexistent rheumatoid arthritis and bronchiectasis and correlates with poor survival in rheumatoid arthritis overall. These findings further implicate immunodeficiency in the genesis of bronchiectasis in rheumatoid arthritis.
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Affiliation(s)
- Krista Makin
- 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
| | - Monica Kemp
- Department of Clinical Immunology, PathWest Laboratory Medicine, Queen Elizabeth II Medical Centre, Perth, Western Australia, Australia
| | - Peter Kendall
- Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Max Bulsara
- University of Notre Dame, Fremantle, Western Australia, Australia
| | - Sophie Coleman
- University of Notre Dame, Fremantle, Western Australia, Australia
| | - Graeme J. Carroll
- Fiona Stanley Hospital, Perth, Western Australia, Australia
- Fremantle Hospital, Fremantle, Western Australia, Australia
- University of Notre Dame, Fremantle, Western Australia, Australia
- * E-mail:
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17
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Cheng SW, Lyu CZ, Yao JY, Luo ZQ, Zhang W, Li YQ, Li YY, Li XR, Wang WC, Liu ZT. Association of MBL2 gene polymorphisms with sepsis in children and adult. JOURNAL OF ACUTE DISEASE 2019. [DOI: 10.4103/2221-6189.250371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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18
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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] [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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19
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Hou HT, Xi-Zhang, Wang J, Liu LX, Zhang JF, Yang Q, He GW. Altered plasma proteins released from platelets and endothelial cells are associated with human patent ductus arteriosus. J Cell Physiol 2018; 234:6842-6853. [PMID: 30480800 DOI: 10.1002/jcp.27433] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 08/27/2018] [Indexed: 11/09/2022]
Abstract
Patent ductus arteriosus is the third most common congenital heart disease and resulted from the persistence of ductal patency after birth. Ductus arteriosus closure involves functional and structural remodeling, controlled by many factors. The changes in plasma protein levels associated with PDA closure are not known. Here we for the first time demonstrate six key differential plasma proteins in human patent ductus arteriosus patients using proteomic technology and present a model to illustrate the constriction and closure of ductus arteriosus. Differentially expressed proteins were analyzed by using isobaric tags for relative and absolute quantification and validated by enzyme-linked immunosorbent assay in new samples. The proteomic data have been deposited to the ProteomeXchange Consortium via the PRIDE partner repository with the data set identifier PXD008568. We found 74 upregulated and 98 downregulated proteins in the plasma of patients with PDA. Five decreased proteins (platelet factor 4, fibrinogen, von Willebrand factor, collagen, and mannose binding lectin-associated serine protease-2) and one increased protein (fibronectin) may increase the risk of patent ductus arteriosus. Those proteins are closely related to platelet activation and coagulation cascades, complement mannan-binding-lectin, and other systemic signaling pathways. Our findings for the first time indicate that the differential proteins involved in different pathways may play key roles in the nonclosure of the ductus arteriosus in humans and may be developed as biomarkers for diagnosis. All those findings may be served as the basis of understanding the etiology and pathogenesis of patent ductus arteriosus.
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Affiliation(s)
- Hai-Tao Hou
- Department of Cardiovascular Surgery & Center for Basic Medical Research, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China.,The Heart Center, The Affiliated Hospital of Hangzhou Normal University & Zhejiang University, Hangzhou, China
| | - Xi-Zhang
- Department of Cardiovascular Surgery & Center for Basic Medical Research, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Jun Wang
- Department of Cardiovascular Surgery & Center for Basic Medical Research, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Li-Xin Liu
- Department of Pediatric Cardiothoracic Surgery, Maternal and Child Health Hospital of Tangshan, Hebei, China
| | - Jian-Feng Zhang
- Department of Pediatric Cardiothoracic Surgery, Maternal and Child Health Hospital of Tangshan, Hebei, China
| | - Qin Yang
- Department of Cardiovascular Surgery & Center for Basic Medical Research, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Guo-Wei He
- Department of Cardiovascular Surgery & Center for Basic Medical Research, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China.,The Heart Center, The Affiliated Hospital of Hangzhou Normal University & Zhejiang University, Hangzhou, China.,Department of Surgery, Oregon Health and Science University, Portland, Oregon
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20
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Moghadam SA, Bazi A, Miri-Moghaddam M, Miri-Moghaddam E. Mannose binding lectin-2 gene functional polymorphisms in chronic periodontitis patients; a report from Iran. Meta Gene 2018. [DOI: 10.1016/j.mgene.2018.05.080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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21
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Kentala H, Koponen A, Kivelä AM, Andrews R, Li C, Zhou Y, Olkkonen VM. Analysis of ORP2-knockout hepatocytes uncovers a novel function in actin cytoskeletal regulation. FASEB J 2018; 32:1281-1295. [PMID: 29092904 DOI: 10.1096/fj.201700604r] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
ORP2 is implicated in cholesterol transport, triglyceride metabolism, and adrenocortical steroid hormone production. We addressed ORP2 function in hepatocytes by generating ORP2-knockout (KO) HuH7 cells by CRISPR-Cas9 gene editing, followed by analyses of transcriptome, F-actin morphology, migration, adhesion, and proliferation. RNA sequencing of ORP2-KO cells revealed >2-fold changes in 579 mRNAs. The Ingenuity Pathway Analysis (IPA) uncovered alterations in the following functional categories: cellular movement, cell-cell signaling and interaction, cellular development, cellular function and maintenance, cellular growth and proliferation, and cell morphology. Many pathways in these categories involved actin cytoskeleton, cell migration, adhesion, or proliferation. Analysis of the ORP2 interactome uncovered 109 putative new partners. Their IPA analysis revealed Ras homolog A (RhoA) signaling as the most significant pathway. Interactions of ORP2 with SEPT9, MLC12, and ARHGAP12 were validated by independent assays. ORP2-KO resulted in abnormal F-actin morphology characterized by impaired capacity to form lamellipodia, migration defect, and impaired adhesion and proliferation. Rescue of the migration phenotype and generation of typical cell surface morphology required an intact ORP2 phosphoinositide binding site, suggesting that ORP2 function involves phosphoinositide binding and transport. The results point at a novel function of ORP2 as a lipid-sensing regulator of the actin cytoskeleton, with impacts on hepatocellular migration, adhesion, and proliferation.-Kentala, H., Koponen, A., Kivelä, A. M., Andrews, R., Li, C., Zhou, Y., Olkkonen, V. M. Analysis of ORP2-knockout hepatocytes uncovers a novel function in actin cytoskeletal regulation.
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Affiliation(s)
- Henriikka Kentala
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
| | - Annika Koponen
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
| | - Annukka M Kivelä
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
| | - Robert Andrews
- Systems Immunity Research Institute, Cardiff University School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - ChunHei Li
- Systems Immunity Research Institute, Cardiff University School of Medicine, Cardiff University, Cardiff, United Kingdom.,Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - You Zhou
- Minerva Foundation Institute for Medical Research, Helsinki, Finland.,Systems Immunity Research Institute, Cardiff University School of Medicine, Cardiff University, Cardiff, United Kingdom.,Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Vesa M Olkkonen
- Minerva Foundation Institute for Medical Research, Helsinki, Finland.,Department of Anatomy, Faculty of Medicine, University of Helsinki, Finland
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22
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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. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 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] [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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23
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HBV Viral Load and Liver Enzyme Levels May Be Associated with the Wild MBL2 AA Genotype. Mediators Inflamm 2017; 2017:3718451. [PMID: 28408790 PMCID: PMC5376955 DOI: 10.1155/2017/3718451] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/24/2017] [Accepted: 02/06/2017] [Indexed: 01/26/2023] Open
Abstract
The present study investigated the frequencies of rs1800450 (MBL ⁎B, G>A), rs1800451 (MBL ⁎C, G>A), and rs5030737 (MBL ⁎D, C>T) polymorphisms in exon 1 of the MBL2 gene among patients with chronic viral hepatitis. Blood samples from patients infected with hepatitis B virus (HBV; n = 65), hepatitis C virus (HCV; n = 92), and a noninfected control group (n = 300) were investigated. The presence of polymorphisms was detected using a real-time polymerase chain reaction to correlate with liver disease pathogenesis and fibrosis staging according to the Metavir classification. The genotypic and allelic frequencies showed no significant differences between the groups, but patients with active HBV and the wild AA genotype presented a positive correlation between increased transaminase and HBV DNA levels and the presence of mild to moderate fibrosis. Patients with HCV and the wild AA genotype presented mild inflammation and higher HCV RNA levels, although the same association was not observed for the fibrosis scores. The results suggest that the mutations in exon 1 of the MBL2 gene do not contribute directly to the clinical and laboratory features of HCV and HBV infections, but further studies should be performed to confirm whether the wild AA genotype has indirect effect on disease progression.
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24
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Mannose-Binding Lectin: Biologic Characteristics and Role in the Susceptibility to Infections and Ischemia-Reperfusion Related Injury in Critically Ill Neonates. J Immunol Res 2017; 2017:7045630. [PMID: 28246614 PMCID: PMC5299167 DOI: 10.1155/2017/7045630] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 11/08/2016] [Accepted: 12/28/2016] [Indexed: 01/14/2023] Open
Abstract
The mannose-binding lectin (MBL) is a member of the collectin family, belonging to the innate immunity system. Genetic, biologic, and clinical properties of MBL have been widely investigated throughout the last decades, although some interesting aspects of its potential clinical relevance are still poorly understood. Low circulating concentrations of MBL have been associated with increased risk of infection and poor neurologic outcome in neonates. On the other hand, an excessive and uncontrolled inflammatory response by the neonatal intestine after the exposure to luminal bacteria, leading to an increased production of MBL, may be involved in the onset of necrotizing enterocolitis. The purpose of the present review is to summarize the current knowledge about genetic and biologic characteristics of MBL and its role in the susceptibility to infections and to ischemia-reperfusion related tissue injuries to better explore its clinical relevance during the perinatal period and the possible future therapeutic applications.
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25
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High rate of in-stent restenosis after coronary intervention in carriers of the mutant mannose-binding lectin allele. BMC Cardiovasc Disord 2017; 17:4. [PMID: 28056798 PMCID: PMC5217188 DOI: 10.1186/s12872-016-0440-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 12/08/2016] [Indexed: 11/10/2022] Open
Abstract
Background In-stent restenosis occurs in 10–30% of patients following bare metal stent (BMS) implantation and has various risk factors. Mannose-binding lectin (MBL) is known to have effect on the progression of atherosclerosis. Single nucleotide polymorphisms (SNP) of the MBL2 gene intron 1 (codon 52, 54, 57) are known to modulate the bioavailability of the MBL protein. Our aim was to identify the association of these polymorphisms of the MBL gene in the occurrence of in-stent restenosis after coronary artery bare metal stent implantation. Methods In a non-randomized prospective study venous blood samples were collected after recoronarography from 225 patients with prior BMS implantation. Patients were assigned to diffuse restenosis group and control group based on the result of the coronarography. MBL genotypes were determined using quantitative real-time PCR. Proportion of different genotypes was compared and adjusted with traditional risk factors using multivariate logistic regression. Results Average follow-up time was 1.0 (+ − 1.4) year in the diffuse restenosis group (N = 117) and 2.7 (+ − 2.5) years in the control group (N = 108). The age, gender distribution and risk status was not different between study groups. Proportion of the MBL variant genotype was 26.8% (29 vs. 79 normal homozygous) in the control group and 39.3% (46 vs. 71 normal homozygous) in the restenosis group (p = 0.04). In multivariate analysis the mutant allele was an independent risk factor (OR = 1.96, p = 0.03) of in-stent restenosis. Conclusions MBL polymorphisms are associated with higher incidence of development of coronary in-stent restenosis. The attenuated protein function in the mutant allelic genotype may represent the underlying mechanism.
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26
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Hassidim A, Merdler I, Chorin O, Merdler-Rabinowicz R, Dallal I, Perlman M, Chorin E. Atopic Predilection among Kawasaki Disease Patients: A Cross-Sectional Study of 1,187,757 Teenagers. Int Arch Allergy Immunol 2016; 170:92-6. [PMID: 27437950 DOI: 10.1159/000447639] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 06/15/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Kawasaki disease (KD) is an acute, systemic vasculitis in children, with an etiology that is not completely understood. It is assumed that the development of KD is mediated by an immunologic response. Several reports from East Asia have found a higher prevalence of atopic diseases among patients with KD, but a large-scale study of a non-Asian population regarding this correlation is still lacking. The purpose of this article was to achieve this goal. METHODS We conducted a cross-sectional, large-scale study to estimate the correlation of KD with allergic diseases. The medical history of 1,187,757 Israeli teenagers (aged 16-20 years during the years 1998-2013) was retrieved. The study population was divided into 3 groups according to a past history of noncomplicated and complicated KD and a control group. The prevalence of allergic diseases among these groups was further investigated. RESULTS The prevalence of atopic diseases in the 3 study groups was presented (asthma in 11.4, 8.1 and 3.5%, respectively; angioedema/urticaria in 7.1, 0 and 0.46%, respectively; allergic rhinitis in 20, 12.1 and 6.7%, respectively). In noncomplicated KD, a statistically significant link to asthma [odds ratio (OR) 2.4; p = 0.048] and a borderline significant link to allergic rhinitis (OR 1.9; p = 0.06) were found. In KD complicated with cardiac disease, statistically significant links were found for all the allergic conditions, asthma (OR 3.5; p = 0.003), allergic rhinitis (OR 3.5; p < 0.001) and angioedema/urticaria (OR 16.48; p < 0.001). CONCLUSION KD is associated with allergic diseases. This association increases with the severity of the disease.
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Affiliation(s)
- Ayal Hassidim
- Department of Plastic and Reconstructive Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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27
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Jönsen A, Gullstrand B, Güner N, Bengtsson AA, Nived O, Truedsson L, Sturfelt G. Genetically determined mannan-binding lectin deficiency is of minor importance in determining susceptibility to severe infections and vascular organ damage in systemic lupus erythematosus. Lupus 2016; 16:245-53. [PMID: 17439930 DOI: 10.1177/09612033070160040201] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Deficiency of mannan-binding lectin (MBL) has been reported to impact susceptibility to severe infections and atherosclerosis in systemic lupus erythematosus (SLE). In this study, MBL gene polymorphisms were analysed in 143 SLE patients and the frequency of severe infections and organ damage according to SLICC/ACR Damage Index regarding cerebrovascular accidents, angina pectoris, coronary by-pass surgery, myocardial infarction and peripheral arterial disease leading to significant tissue loss, were recorded during a mean follow-up time of 15 years from diagnosis. In a multiple logistic regression model, smoking ( P = 0.001), hypertension ( P = 0.030), alcohol intake ( P = 0.027) and higher triglyceride concentration ( P = 0.026) were associated with cerebrovascular, cardiovascular and peripheral arterial organ damage (CPAD), while the association with MBL deficiency did not reach significance ( P = 0.098). Alcohol intake (>15 g/month) was inversely correlated with CPAD (OR = 0.29, 95%CI 0.096—0.87). MBL deficiency was not significantly more common in SLE patients with severe infections in a multivariate analysis ( P > 0.3). In conclusion, classical risk factors such as smoking, hypertension, low alcohol intake and elevated triglyceride concentration were relatively more important for development of CPAD than MBL deficiency in SLE. Furthermore, MBL deficiency did not contribute to development of major infections in SLE. Lupus (2007) 16, 245—253.
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Affiliation(s)
- A Jönsen
- Department of Clinical Sciences, Section of Rheumatology, Lund University, Lund, Sweden.
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28
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Pitt WG, Alizadeh M, Husseini GA, McClellan DS, Buchanan CM, Bledsoe CG, Robison RA, Blanco R, Roeder BL, Melville M, Hunter AK. Rapid separation of bacteria from blood-review and outlook. Biotechnol Prog 2016; 32:823-39. [PMID: 27160415 DOI: 10.1002/btpr.2299] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 05/03/2016] [Indexed: 12/11/2022]
Abstract
The high morbidity and mortality rate of bloodstream infections involving antibiotic-resistant bacteria necessitate a rapid identification of the infectious organism and its resistance profile. Traditional methods based on culturing the blood typically require at least 24 h, and genetic amplification by PCR in the presence of blood components has been problematic. The rapid separation of bacteria from blood would facilitate their genetic identification by PCR or other methods so that the proper antibiotic regimen can quickly be selected for the septic patient. Microfluidic systems that separate bacteria from whole blood have been developed, but these are designed to process only microliter quantities of whole blood or only highly diluted blood. However, symptoms of clinical blood infections can be manifest with bacterial burdens perhaps as low as 10 CFU/mL, and thus milliliter quantities of blood must be processed to collect enough bacteria for reliable genetic analysis. This review considers the advantages and shortcomings of various methods to separate bacteria from blood, with emphasis on techniques that can be done in less than 10 min on milliliter-quantities of whole blood. These techniques include filtration, screening, centrifugation, sedimentation, hydrodynamic focusing, chemical capture on surfaces or beads, field-flow fractionation, and dielectrophoresis. Techniques with the most promise include screening, sedimentation, and magnetic bead capture, as they allow large quantities of blood to be processed quickly. Some microfluidic techniques can be scaled up. © 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:823-839, 2016.
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Affiliation(s)
- William G Pitt
- Dept. of Chemical Engineering, Brigham Young University, Provo, UT
| | - Mahsa Alizadeh
- Dept. of Chemical Engineering, Brigham Young University, Provo, UT
| | - Ghaleb A Husseini
- Dept. of Chemical Engineering, American University of Sharjah, Sharjah, UAE
| | | | - Clara M Buchanan
- Dept. of Chemical Engineering, Brigham Young University, Provo, UT
| | - Colin G Bledsoe
- Dept. of Chemical Engineering, Brigham Young University, Provo, UT
| | - Richard A Robison
- Dept. of Microbiology and Molecular Biology, Brigham Young University, Provo, UT
| | - Rae Blanco
- Dept. of Chemical Engineering, Brigham Young University, Provo, UT
| | | | - Madison Melville
- Dept. of Chemical Engineering, Brigham Young University, Provo, UT
| | - Alex K Hunter
- Dept. of Chemical Engineering, Brigham Young University, Provo, UT
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Prentice B, McKay K, Selvadurai H, Robinson PD, Abel F, Fitzgerald DA. Question 6: Is there a role for Mannose-Binding Lectin measurement in Cystic Fibrosis management? Paediatr Respir Rev 2016; 19:46-8. [PMID: 26563512 DOI: 10.1016/j.prrv.2015.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 09/22/2015] [Indexed: 01/16/2023]
Affiliation(s)
- Bernadette Prentice
- Advanced Trainee Paediatric Respiratory and Sleep Medicine, The Sydney Children's Hospital Network; Department of Respiratory Medicine, The Children's Hospital at Westmead.
| | - Karen McKay
- Department of Respiratory Medicine, The Children's Hospital at Westmead; Discipline of Paediatrics & Child Health, Sydney Medical School, The University of Sydney
| | - Hiran Selvadurai
- Department of Respiratory Medicine, The Children's Hospital at Westmead; Discipline of Paediatrics & Child Health, Sydney Medical School, The University of Sydney
| | - Paul D Robinson
- Department of Respiratory Medicine, The Children's Hospital at Westmead; Discipline of Paediatrics & Child Health, Sydney Medical School, The University of Sydney
| | - Francois Abel
- Department of Respiratory Medicine, Great Ormond Street Hospital For Children, London
| | - Dominic A Fitzgerald
- Department of Respiratory Medicine, The Children's Hospital at Westmead; Discipline of Paediatrics & Child Health, Sydney Medical School, The University of Sydney
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Bjarnadottir H, Arnardottir M, Ludviksson BR. Frequency and distribution of FCN2 and FCN3 functional variants among MBL2 genotypes. Immunogenetics 2016; 68:315-25. [PMID: 26795763 PMCID: PMC4842218 DOI: 10.1007/s00251-016-0903-4] [Citation(s) in RCA: 10] [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: 11/06/2015] [Accepted: 01/08/2016] [Indexed: 12/14/2022]
Abstract
The six types of pattern recognition molecules (PRMs) that initiate complement via the lectin pathway (LP) comprise collectins and ficolins. The importance of having various PRMs to initiate the LP is currently unclear. Mannan-binding lectin (MBL) is a collectin member of the LP PRMs. MBL deficiency is common with mild clinical consequence. Thus, the lack of MBL may be compensated for by the other PRMs. We hypothesized that variants FCN2 + 6424 and FCN3 + 1637delC that cause gene-dose-dependent reduction in ficolin-2 and ficolin-3 levels, respectively, may be rare in MBL-deficient individuals due to the importance of compensation within the LP. The aim of this study was to investigate the distribution and frequency of these variants among MBL2 genotypes in healthy subjects. The allele frequency of FCN2 + 6424 and FCN3 + 1637delC was 0.099 and 0.015, respectively, in the cohort (n = 498). The frequency of FCN2 + 6424 tended to be lower among MBL-deficient subjects (n = 53) than among MBL-sufficient subjects (n = 445) (0.047 versus 0.106, P = 0.057). In addition, individuals who were homozygous for FCN2 + 6424 were sufficient MBL producers. The frequency of FCN3 + 1637delC did not differ between the groups. The frequency of FCN2 + 6424 was similar in FCN3 + 1637delC carriers (n = 15) versus wild type (n = 498). Furthermore, subjects that were heterozygote carriers of both FCN2 + 6424 and FCN3 + 1637delC were sufficient MBL producers. In conclusion, FCN2 + 6424 carriers with MBL deficiency tend to be rare among healthy individuals. MBL-deficient individuals with additional LP PRM defects may be at risk to morbidity.
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Affiliation(s)
- Helga Bjarnadottir
- Department of Immunology, Landspitali-The National University Hospital of Iceland, Hringbraut (Building 14 at Eiriksgata), 101, Reykjavik, Iceland.
| | - Margret Arnardottir
- Department of Immunology, Landspitali-The National University Hospital of Iceland, Hringbraut (Building 14 at Eiriksgata), 101, Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Bjorn Runar Ludviksson
- Department of Immunology, Landspitali-The National University Hospital of Iceland, Hringbraut (Building 14 at Eiriksgata), 101, Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
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Abstract
Sepsis is a major cause of neonatal morbidity and mortality, especially in vulnerable preterm populations. Immature immune defenses, and environmental and maternal factors contribute to this risk, with as many as a third of very preterm infants experiencing sepsis during their stay in the neonatal intensive care unit (NICU). Epidemiologic and twin studies have suggested that there is a genetic contribution to sepsis predilection. Several investigators have conducted candidate gene association studies on variants of specific interest and potential functional significance in neonatal sepsis. In this review, we describe details of studies that have evaluated genetic susceptibility in neonatal sepsis, and summarize findings from a review of candidate gene association studies.
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Affiliation(s)
- Lakshmi Srinivasan
- Department of Pediatrics, The Children's Hospital of Philadelphia, The University of Pennsylvania, Philadelphia, PA.
| | - Haresh Kirpalani
- Department of Pediatrics, The Children's Hospital of Philadelphia, The University of Pennsylvania, Philadelphia, PA
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Kata D, Földesi I, Feher LZ, Hackler L, Puskas LG, Gulya K. Rosuvastatin enhances anti-inflammatory and inhibits pro-inflammatory functions in cultured microglial cells. Neuroscience 2015; 314:47-63. [PMID: 26633263 DOI: 10.1016/j.neuroscience.2015.11.053] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 11/21/2015] [Accepted: 11/23/2015] [Indexed: 12/20/2022]
Abstract
Microglial activation results in profound morphological, functional and gene expression changes that affect the pro- and anti-inflammatory mechanisms of these cells. Although statins have beneficial effects on inflammation, they have not been thoroughly investigated for their ability to affect microglial functions. Therefore the effects of rosuvastatin, one of the most commonly prescribed drugs in cardiovascular therapy, either alone or in combination with bacterial lipopolysaccharide (LPS), were profiled in pure microglial cultures derived from the forebrains of 18-day-old rat embryos. To reveal the effects of rosuvastatin on a number of pro- and anti-inflammatory mechanisms, we performed morphometric, functional and gene expression studies relating to cell adhesion and proliferation, phagocytosis, pro- and anti-inflammatory cytokine (IL-1β, tumor necrosis factor α (TNF-α) and IL-10, respectively) production, and the expression of various inflammation-related genes, including those related to the above morphological parameters and cellular functions. We found that microglia could be an important therapeutic target of rosuvastatin. In unchallenged (control) microglia, rosuvastatin inhibited proliferation and cell adhesion, but promoted microspike formation and elevated the expression of certain anti-inflammatory genes (Cxcl1, Ccl5, Mbl2), while phagocytosis or pro- and anti-inflammatory cytokine production were unaffected. Moreover, rosuvastatin markedly inhibited microglial activation in LPS-challenged cells by affecting both their morphology and functions as it inhibited LPS-elicited phagocytosis and inhibited pro-inflammatory cytokine (IL-1β, TNF-α) production, concomitantly increasing the level of IL-10, an anti-inflammatory cytokine. Finally, rosuvastatin beneficially and differentially affected the expression of a number of inflammation-related genes in LPS-challenged cells by inhibiting numerous pro-inflammatory and stimulating several anti-inflammatory genes. Since the microglia could elicit pro-inflammatory responses leading to neurodegeneration, it is important to attenuate such mechanisms and promote anti-inflammatory properties, and develop prophylactic therapies. By beneficially regulating both pro- and anti-inflammatory microglial functions, rosuvastatin may be considered as a prophylactic agent in the prevention of inflammation-related neurological disorders.
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Affiliation(s)
- D Kata
- Department of Cell Biology and Molecular Medicine, University of Szeged, Szeged, Hungary
| | - I Földesi
- Department of Laboratory Medicine, University of Szeged, Szeged, Hungary
| | | | | | | | - K Gulya
- Department of Cell Biology and Molecular Medicine, University of Szeged, Szeged, Hungary.
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Mishra A, Antony JS, Gai P, Sundaravadivel P, Van TH, Jha AN, Singh L, Velavan TP, Thangaraj K. Mannose-binding Lectin (MBL) as a susceptible host factor influencing Indian Visceral Leishmaniasis. Parasitol Int 2015; 64:591-6. [PMID: 26297290 DOI: 10.1016/j.parint.2015.08.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 07/31/2015] [Accepted: 08/07/2015] [Indexed: 10/23/2022]
Abstract
Visceral Leishmaniasis (VL), caused by Leishmania donovani is endemic in the Indian sub-continent. Mannose-binding Lectin (MBL) is a complement lectin protein that binds to the surface of Leishmania promastigotes and results in activation of the complement lectin cascade. We utilized samples of 218 VL patients and 215 healthy controls from an Indian population. MBL2 functional variants were genotyped and the circulating MBL serum levels were measured. MBL serum levels were elevated in patients compared to the healthy controls (adjusted P=0.007). The MBL2 promoter variants -78C/T and +4P/Q were significantly associated with relative protection to VL (-78C/T, OR=0.7, 95% CI=0.5-0.96, adjusted P=0.026 and +4P/Q, OR=0.66, 95% CI=0.48-0.9, adjusted P=0.012). MBL2*LYQA haplotypes occurred frequently among controls (OR=0.69, 95% CI=0.5-0.97, adjusted P=0.034). MBL recognizes Leishmania and plays a relative role in establishing L. donovani infection and subsequent disease progression. In conclusion, MBL2 functional variants were associated with VL.
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Affiliation(s)
- Anshuman Mishra
- CSIR - Center for Cellular and Molecular Biology, Hyderabad, India
| | - Justin S Antony
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | - Prabhanjan Gai
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | | | - Tong Hoang Van
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
| | - Aditya Nath Jha
- CSIR - Center for Cellular and Molecular Biology, Hyderabad, India
| | - Lalji Singh
- CSIR - Center for Cellular and Molecular Biology, Hyderabad, India; Banaras Hindu University, Varanasi, India
| | - Thirumalaisamy P Velavan
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany; Fondation Congolaise pour la Recherche Medicale, Brazzaville, Congo.
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Petri C, Thiel S, Jensenius JC, Herlin T. Investigation of Complement-activating Pattern Recognition Molecules and Associated Enzymes as Possible Inflammatory Markers in Oligoarticular and Systemic Juvenile Idiopathic Arthritis. J Rheumatol 2015; 42:1252-8. [PMID: 26034144 DOI: 10.3899/jrheum.141449] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2015] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The complement system plays a crucial role in the pathogenesis of inflammatory processes. The lectin pathway of the complement system is activated through the recognition of pathogens by soluble pattern recognition molecules (PRM), i.e., mannan-binding lectin (MBL), collectin-LK, and the ficolins. PRM are reportedly correlated to disease activity in rheumatoid arthritis (RA). The aim was to evaluate the pathogenic role of PRM in juvenile idiopathic arthritis (JIA). METHODS We measured MBL, M-ficolin, H-ficolin, MBL-associated serine proteases (MASP) 1, MASP-2, MASP-3, and 2 alternative splice products, MBL-associated protein (MAp) 44 and MAp19, in plasma and synovial fluid (SF) of children with persistent oligoarticular (n = 109 in plasma, n = 38 in SF) and systemic JIA (n = 19 in plasma, n = 11 in SF). The concentrations of the proteins were measured by in-house time-resolved immunofluorometric assays. RESULTS We observed significantly higher levels of M-ficolin, MASP-1, MASP-2, and MASP-3 in plasma and SF from patients with systemic JIA compared with persistent oligoarticular JIA (p < 0.001). In paired samples of plasma and SF from 47 patients with oligoarticular and systemic JIA, we observed higher concentrations in plasma for both subtypes for 7 of the measured proteins while the reverse relationship was observed for MASP-3. M-ficolin and MASP-2 correlated to erythrocyte sedimentation rate, C-reactive protein, white blood cell count, and platelet count (p < 0.001). M-ficolin was in addition related to the number of active joints and inversely related to hemoglobin levels. CONCLUSION Our results point to plasma M-ficolin and MASP-2 as inflammatory markers in JIA. The levels of all proteins are higher in plasma than in SF, except for MASP-3, indicating that MASP-3 may be produced locally in joints.
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Affiliation(s)
- Christine Petri
- From the Department of Pediatrics and Department of Biomedicine, Aarhus University Hospital, Aarhus, Denmark.C. Petri, MD, Department of Pediatrics and Department of Biomedicine, Aarhus University Hospital; S. Thiel, MD, DMSc; J.C. Jensenius, MD, DMSc, Department of Biomedicine, Aarhus University Hospital; T. Herlin, MD, DMSc, Department of Pediatrics, Aarhus University Hospital
| | - Steffen Thiel
- From the Department of Pediatrics and Department of Biomedicine, Aarhus University Hospital, Aarhus, Denmark.C. Petri, MD, Department of Pediatrics and Department of Biomedicine, Aarhus University Hospital; S. Thiel, MD, DMSc; J.C. Jensenius, MD, DMSc, Department of Biomedicine, Aarhus University Hospital; T. Herlin, MD, DMSc, Department of Pediatrics, Aarhus University Hospital
| | - Jens Christian Jensenius
- From the Department of Pediatrics and Department of Biomedicine, Aarhus University Hospital, Aarhus, Denmark.C. Petri, MD, Department of Pediatrics and Department of Biomedicine, Aarhus University Hospital; S. Thiel, MD, DMSc; J.C. Jensenius, MD, DMSc, Department of Biomedicine, Aarhus University Hospital; T. Herlin, MD, DMSc, Department of Pediatrics, Aarhus University Hospital
| | - Troels Herlin
- From the Department of Pediatrics and Department of Biomedicine, Aarhus University Hospital, Aarhus, Denmark.C. Petri, MD, Department of Pediatrics and Department of Biomedicine, Aarhus University Hospital; S. Thiel, MD, DMSc; J.C. Jensenius, MD, DMSc, Department of Biomedicine, Aarhus University Hospital; T. Herlin, MD, DMSc, Department of Pediatrics, Aarhus University Hospital.
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Use of early biomarkers in neonatal brain damage and sepsis: state of the art and future perspectives. BIOMED RESEARCH INTERNATIONAL 2015; 2015:253520. [PMID: 25685774 PMCID: PMC4313065 DOI: 10.1155/2015/253520] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 09/11/2014] [Indexed: 12/19/2022]
Abstract
The identification of early noninvasive biochemical markers of disease is a crucial issue of the current scientific research, particularly during the first period of life, since it could provide useful and precocious diagnostic information when clinical and radiological signs are still silent. The ideal biomarker should be practical and sensitive in the precocious identification of at risk patients. An earlier diagnosis may lead to a larger therapeutic window and improve neonatal outcome. Brain damage and sepsis are common causes of severe morbidity with poor outcome and mortality during the perinatal period. A large number of potential biomarkers, including neuroproteins, calcium binding proteins, enzymes, oxidative stress markers, vasoactive agents, and inflammatory mediators, have been so far investigated. The aim of the present review was to provide a brief overview of some of the more commonly investigated biomarkers used in case of neonatal brain damage and sepsis.
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van Kessel DA, Hoffman TW, van Velzen-Blad H, Zanen P, Rijkers GT, Grutters JC. Response to pneumococcal vaccination in mannose-binding lectin-deficient adults with recurrent respiratory tract infections. Clin Exp Immunol 2014; 177:272-9. [PMID: 24547957 DOI: 10.1111/cei.12299] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2014] [Indexed: 12/11/2022] Open
Abstract
Mannose-binding lectin (MBL)-deficiency is associated with an increased susceptibility to pneumococcal infections and other forms of disease. Pneumococcal vaccination is recommended in MBL-deficient patients with recurrent respiratory tract infections (RRTI). The response to pneumococcal vaccination in MBL-deficient individuals has not yet been studied in detail. An impaired response to pneumococcal polysaccharides in MBL-deficient patients might explain the association between MBL deficiency and pneumococcal infections. This study investigates the antibody response to pneumococcal vaccination in MBL-deficient adult patients with RRTI. Furthermore, we investigated whether there was a difference in clinical presentation between MBL-deficient and -sufficient patients with RRTI. Eighteen MBL-deficient and 63 MBL-sufficient adult patients with RRTI were all vaccinated with the 23-valent pneumococcal polysaccharide vaccine and antibodies to 14 pneumococcal serotypes were measured on a Luminex platform. There were no differences observed in the response to pneumococcal vaccination between MBL-sufficient and -deficient patients. Forty-three MBL-sufficient patients could be classified as responders to pneumococcal vaccination and 20 as low responders, compared to 15 responders and three low responders in the MBL-deficient patients. We found no clear difference in clinical, radiological, lung function and medication parameters between MBL-sufficient and -deficient patients. In conclusion, our study suggests that MBL-deficient adults with RRTI have a response to a pneumococcal capsular polysaccharide vaccine comparable with MBL-sufficient patients. Moreover, we did not find a clear clinical role of MBL deficiency in adults with RRTI. As MBL deficiency is associated with an increased susceptibility to pneumococcal infections, pneumococcal vaccination might be protective in MBL-deficient patients with RRTI.
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Affiliation(s)
- D A van Kessel
- Department of Pulmonology, Sint Antonius Hospital, Nieuwegein, the Netherlands; Division of Heart and Lungs, University Medical Center, Utrecht, the Netherlands
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Liu XH, Li Q, Zhang P, Su Y, Zhang XR, Sun Q. Serum mannose-binding lectin and C-reactive protein are potential biomarkers for patients with community-acquired pneumonia. Genet Test Mol Biomarkers 2014; 18:630-5. [PMID: 25019352 DOI: 10.1089/gtmb.2014.0038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIM The aim of this study was to identify whether mannose-binding lectin (MBL) and C-reactive protein (CRP) may be used as clinical biomarkers for predicting outcome of community-acquired pneumonia (CAP) by tracking serum MBL and CRP level changes during a time course. METHODS One hundred four patients with CAP and 100 healthy individuals were enrolled in this study. The patients were further divided into Survivor and Death groups based on 30-day mortality. The MBL and CRP levels in these patients at pre- and post-treatments at days 4 and 7 were determined using an immunoturbidimetric assay and an enzyme-linked immunosorbent assay (ELISA). RESULTS Compared to the control group, the MBL and CRP levels in the CAP group were significantly higher. CRP levels in the CAP group significantly reduced within 1 week following anti-infection and other supporting therapies including anti-phlegm and liquidation. MBL levels were significantly higher in the Survivor group than in the Death group (p<0.05). On the contrary, CRP levels were significantly higher in the Death group than in the Survivor group (p<0.05). There was a negative correlation between the serum MBL and CRP levels in all patients following the treatments. CONCLUSION Both the MBL and CRP can serve as inflammatory markers in predicting the outcome of patients with CAP.
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Affiliation(s)
- Xue-Hua Liu
- Department of Intensive Care Unit, TianJin People's Hospital , TianJin, China
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Variants in host viral replication cycle genes are associated with heterosexual HIV-1 acquisition in Africans. J Acquir Immune Defic Syndr 2014; 66:127-34. [PMID: 24463784 PMCID: PMC4025588 DOI: 10.1097/qai.0000000000000113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Supplemental Digital Content is Available in the Text. Objective: We evaluated genetic variants in 51 candidate genes encoding proteins that interact with HIV-1 during the virus life cycle for association with HIV-1 outcomes in an African cohort. Methods: Using a nested case–control study within a cohort of heterosexual HIV-1–serodiscordant couples, we genotyped 475 haplotype-tagging single-nucleotide polymorphisms (tagSNPs) and 18 SNPs previously associated with HIV-1 transmission and/or progression (candidate SNPs) in 51 host genes. We used logistic and Cox proportional hazard regression with adjustment for sex, age, and population stratification to detect SNP associations with HIV-1 acquisition, plasma HIV-1 set point, and a composite measure of HIV-1 disease progression. Significant thresholds for tagSNP, but not candidate SNP, associations were subjected to Bonferroni correction for multiple testing. Results: We evaluated 491 HIV-1–infected and 335 HIV-1–uninfected individuals for 493 SNPs, 459 of which passed quality control filters. Candidate SNP PPIA rs8177826 and tagSNP SMARCB1 rs6003904 were significantly associated with HIV-1 acquisition risk (odds ratio = 0.14, P = 0.03, and odds ratio = 2.11, Pcorr = 0.01, respectively). Furthermore, the TT genotype for CCR5 rs1799988 was associated with a mean 0.2 log10 copies per milliliter lower plasma HIV-1 RNA set point (P = 0.04). We also identified significant associations with HIV-1 disease progression for variants in FUT2 and MBL2. Conclusions: Using a targeted gene approach, we identified variants in host genes whose protein products interact with HIV-1 during the virus replication cycle and were associated with HIV-1 outcomes in this African cohort.
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Recurrent miscarriages, innate immunity, and autoimmune reaction to chlamydial 60-kDa heat shock protein--is there an association? Fertil Steril 2014; 101:1675-80. [PMID: 24680363 DOI: 10.1016/j.fertnstert.2014.02.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 02/13/2014] [Accepted: 02/20/2014] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To evaluate a potential association of immunity to the Chlamydia trachomatis 60kDa heat shock protein (ChlamHSP60) and recurrent miscarriages. DESIGN Prospective study. SETTING Outpatient miscarriage clinic of a university-based hospital. PATIENT(S) 120 asymptomatic women with a history of recurrent miscarriages. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Determination of serum immunoglobulin G (IgG) antibodies (Ab) to ChlamHSP60 and human HSP60 and, in parallel, mannose-binding lectin (MBL) and the total hemolytic complement (CH50); medical history and clinical examination, including multiple relevant laboratory determinants. RESULT(S) ChlamHSP60 Ab were detected in 24 (20%) of 120 patients. Antibodies to human HSP60 were found in 19 (15.8%) of 120 patients, and more frequently in individuals who tested positive for ChlamHSP60. ChlamHSP60 were statistically significantly associated with antichlamydial IgG Ab. However, antibodies to ChlamHSP60 were not related to medical history, the number of abortions, or the time frame of fetal loss. ChlamHSP60 antibodies were not associated with the relevant variables of the coagulation cascade, a panel of autoimmune parameters including thyroid autoimmunity, deficiencies of the complement system (low MBL), or with antibodies to common infectious diseases. No statistically significant differences were was found when comparing the prevalence of ChlamHSP60 Ab in the study group with recurrent miscarriages and 90 controls (women attending for an annual pelvic examination). CONCLUSION(S) Immunity to ChlamHSP60 does not play a major role in the etiology of recurrent miscarriages.
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Martín-Antonio B, Granell M, Urbano-Ispizua Á. Genomic polymorphisms of the innate immune system and allogeneic stem cell transplantation. Expert Rev Hematol 2014; 3:411-27. [DOI: 10.1586/ehm.10.40] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Kim YS, Kim YH, Ye BD, Park DW, Kim JW, Han DS. Mannose-binding lectin deficiency is not associated with anti-Saccharomyces cerevisiae antibody in Korean Crohn's disease patients. Clin Chim Acta 2013; 429:206-11. [PMID: 24374090 DOI: 10.1016/j.cca.2013.12.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 12/09/2013] [Accepted: 12/16/2013] [Indexed: 01/08/2023]
Abstract
BACKGROUND Mannose-binding lectin (MBL) is a pattern-recognition molecule and an important component of the innate defense system. Anti-Saccharomyces cerevisiae antibody (ASCA) is a well known serologic marker of Crohn's disease (CD). This study aimed to investigate the association between MBL, ASCA, and clinical features in Korean CD patients. METHOD Two hundred and eighty-three well-characterized CD patients were included. MBL concentrations, serum IgG and IgA concentrations of ASCA were determined by ELISA. Low MBL concentrations were defined as serum MBL concentrations <500 ng/ml. RESULT Low MBL concentrations were observed in 41 CD patients (14.5%). No differences in MBL concentrations were detected according to the age at diagnosis, behavior, or the location of patients with CD. MBL concentrations and the frequency of low MBL concentrations did not differ according to ASCA positivity. The presence of perianal involvement (p=0.043), younger age at diagnosis (p=0.021), and intestinal surgery (p=0.047) were more frequently associated with ASCA positive patients. CONCLUSION MBL concentration is not associated with clinical features of CD patients or ASCA positivity. ASCA positivity is associated with a severe clinical course in Korean CD patients.
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Affiliation(s)
- You Sun Kim
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, 85 Geo-dong, Jung-gu, Seoul 100-032, South Korea.
| | - Young-Ho Kim
- Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong Gangnam-gu, Seoul 135-710, South Korea.
| | - Byong Duk Ye
- Department of Internal Medicine, University of Ulsan College of Medicine, 388 Pungnap-dong, Songpa-gu, Seoul, 138-746, South Korea
| | - Dong Won Park
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, 85 Geo-dong, Jung-gu, Seoul 100-032, South Korea
| | - Ji Won Kim
- Department of Internal Medicine, Seoul National University College of Medicine, 101 Deahang-no, Jongno-gu, Seoul, 110-744, South Korea
| | - Dong Soo Han
- Department of Internal Medicine, Hanyang University College of Medicine, 249 Kyomun-dong, Kuri, 471-701, South Korea
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Pöyhönen L, Kröger L, Gröndahl-Yli-Hannuksela K, Vuononvirta J, Huhtala H, He Q, Korppi M. Variant MBL2 genotypes producing low mannose-binding lectin may increase risk of Bacillus Calmette-Guerin osteitis in vaccinated newborns. Acta Paediatr 2013; 102:1095-9. [PMID: 23865867 DOI: 10.1111/apa.12360] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 06/27/2013] [Accepted: 07/15/2013] [Indexed: 10/26/2022]
Abstract
AIM The aim of this study was to evaluate whether mannose-binding lectin (MBL) plays a role in the development of osteitis after Bacillus Calmette-Guerin (BCG) vaccination as a newborn. METHODS Blood samples were obtained from 132 former BCG osteitis patients, now aged 21-49 years, and analysed for MBL concentration and MBL2 genotype in a controlled setting. RESULTS Variant genotypes in the MBL2 gene were more common in the former BCG osteitis patients (42.4%) than in the population controls (32.3%, p = 0.033). However, MBL concentrations at the age of 21-49 years were not lower in these patients than in the controls in the same age group. The variant MBL2 genotypes were associated with low serum MBL concentrations, and moreover, MBL concentration was not measurable in two of those three patients who were homozygous for the variant MBL2 genotype. Low serum MBL concentrations were not associated with any illnesses in the medical history of the BCG patients, their siblings or children. CONCLUSION Preliminary evidence was found that variant, low-MBL-producing genotypes may be associated with the increased risk of BCG osteitis in vaccinated newborns.
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Affiliation(s)
- Laura Pöyhönen
- Research Center for Child Health; University of Tampere and University Hospital; Tampere; Finland
| | - Liisa Kröger
- Department of Pediatrics; University of Eastern Finland and University Hospital; Kuopio; Finland
| | | | | | - Heini Huhtala
- School of Health Sciences; University of Tampere; Tampere; Finland
| | - Qiushui He
- National Institute for Health and Welfare; Turku; Finland
| | - Matti Korppi
- Research Center for Child Health; University of Tampere and University Hospital; Tampere; Finland
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Roberts JA, Barrios R, Cagle PT, Ge Y, Takei H, Haque AK, Burns KM, Land GA, Dilioglou S, Bernard DW. The Presence of Anti-HLA Donor-Specific Antibodies in Lung Allograft Recipients Does Not Correlate With C4d Immunofluorescence in Transbronchial Biopsy Specimens. Arch Pathol Lab Med 2013; 138:1053-8. [DOI: 10.5858/arpa.2013-0539-oa] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Context.—C4d immunofluorescence (IF) is a surrogate for development of donor-specific antibodies (DSAs) against human leukocyte antigen (HLA) class I and II antigens in kidney and heart biopsy specimens for monitoring of antibody-mediated (humoral) allograft rejection (AMR). Use of C4d IF in monitoring of lung allografts has shown conflicting results.
Objective.—To determine if C4d IF can be used as a reliable marker for AMR and if it correlates with the presence of DSAs and histologic findings on biopsy.
Design.—All transbronchial biopsies in lung allograft recipients, performed at our institution in a 3-year period, were reviewed. A cohort of 92 patients with 110 corresponding biopsies met the inclusion criteria of (1) having a resulted DSA within 2 weeks of biopsy and (2) having C4d immunofluorescence studies performed and confirmed.
Results.—Twenty-nine patients (31.5%) were positive for DSAs and 63 patients (68.5%) did not develop DSAs. Positive C4d capillary IF was seen in 18 of 110 total biopsy specimens (16.4%). Eight of these biopsy samples were from patients positive for DSAs and 10 were from patients negative for DSAs. The correlation coefficient between the presence of DSAs and C4d IF was 0.1628 (P = .09).
Conclusions.—A significant proportion of DSA-positive patients had negative C4d IF results and frequently have no histologic changes on biopsy specimens. DSA-negative patients can be positive for C4d and may show the same histologic changes as reported for DSA-positive patients. Diagnosis of AMR in lung may require a collaborative approach combining clinical data, DSA status, and histology.
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Affiliation(s)
- Jordan A. Roberts
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
| | - Roberto Barrios
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
| | - Philip T. Cagle
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
| | - Yimin Ge
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
| | - Hidehiro Takei
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
| | - Abida K. Haque
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
| | - Kevin M. Burns
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
| | - Geoffrey A. Land
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
| | - Smaroula Dilioglou
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
| | - David W. Bernard
- From the Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, Texas (Drs Roberts, Barrios, Cagle, Ge, Takei, Haque, Burns, Land, Dilioglou, and Bernard); and the Department of Pathology, Weill Cornell Medical College of Cornell University, Houston, Texas (Drs Barrios, Cagle, Ge, and Takei)
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Association of macrophage migration inhibitory factor and mannose-binding lectin-2 gene polymorphisms in acute rheumatic fever. Cardiol Young 2013; 23:486-90. [PMID: 22813781 DOI: 10.1017/s1047951112000972] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Macrophage migration inhibitory factor and mannose-binding lectin-2 play important roles in the pathogenesis of several acute and chronic inflammatory/autoimmune disorders. The aim of the study was to investigate any possible association between migration inhibitory factor and mannose-binding lectin-2 gene polymorphisms and acute rheumatic fever in children. Material and methods A total of 38 unrelated children with acute rheumatic fever and 40 age- and sex-matched healthy controls were analysed for codon 54 A/B polymorphism in mannose-binding lectin-2 gene and -173 G/C polymorphism in migration inhibitory factor gene by using the polymerase chain reaction method. RESULTS Frequency of BB genotype of mannose-binding lectin-2 gene was higher in the patient group. Interestingly, children with acute rheumatic fever with AA genotype tended to have chorea compared with children with BB genotype. There was a statistically significant increase in frequency of the migration inhibitory factor -173 CC genotype in patients compared with the control subjects. CONCLUSION The present study is the first to investigate the mannose-binding lectin-2 gene polymorphism in children with acute rheumatic fever. BB genotype of mannose-binding lectin-2 (codon 54) and CC genotype of migration inhibitory factor (-173) may have a role in the immunoinflammatory process of acute rheumatic fever.
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Kuo HC, Chang WC, Yang KD, Yu HR, Wang CL, Ho SC, Yang CY. Kawasaki disease and subsequent risk of allergic diseases: a population-based matched cohort study. BMC Pediatr 2013; 13:38. [PMID: 23522327 PMCID: PMC3614461 DOI: 10.1186/1471-2431-13-38] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 03/19/2013] [Indexed: 12/18/2022] Open
Abstract
Background The risk of allergic diseases among Kawasaki disease (KD) patients relative to the general population is not known. The aim of this study was to perform a population-based cohort study to investigate the risk of allergic diseases among children after KD in Taiwan- a country with the third highest incidence of KD in the world. Methods Data were obtained from the Taiwan National Health Insurance Research Database. In total, 253 patients who were 5 years of age or younger and had a first-time hospitalization with a diagnosis of KD between 1997 and 2005 were included as the study cohort and 1,012 non-KD patients matched for age and sex were included as comparison cohort. Multivariate Cox proportional hazard regression model was used to adjust for confounding and to compare the 6-year allergic-free survival rate between these two cohorts. Results The incidence rate of allergic diseases (184.66 per 1000 person-year) was significantly higher in the KD cohort than in the control cohort (124.99 per 1000 person-years). After adjusting for potential confounders, the adjusted hazard ratios of asthma and allergic rhinitis were 1.51 (95% confidence interval = 1.17-1.95) and 1.30 (95% confidence interval = 1.04-1.62), respectively. Conclusion We conclude that KD patients were at an increased risk for allergic diseases compared with the comparison cohort.
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Affiliation(s)
- Ho-Chang Kuo
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Kovacs M, Papp M, Lakatos PL, Jacobsen S, Nemes E, Polgar M, Solyom E, Bodi P, Horvath A, Molnar K, Szabo D, Cseh A, Muller KE, Dezsofi A, Arato A, Veres G. Low mannose-binding lectin (MBL) is associated with paediatric inflammatory bowel diseases and ileal involvement in patients with Crohn disease. J Crohns Colitis 2013; 7:134-41. [PMID: 22504031 DOI: 10.1016/j.crohns.2012.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Revised: 03/11/2012] [Accepted: 03/12/2012] [Indexed: 02/08/2023]
Abstract
BACKGROUND Mannose-binding lectin (MBL) is a pattern-recognition molecule of the innate immune system and may be involved in the pathogenesis of inflammatory bowel disease (IBD). Our aim was to assess the prevalence of MBL deficiency in a cohort of patients with paediatric-onset IBD and study whether it is associated with the clinical manifestations, serum antibody formation, or genetic factors. METHODS This prospective study included 159 paediatric patients (mean age: 14.0 years) with IBD [107 patients with Crohn disease (CD) and 52 patients with ulcerative colitis (UC)]. Furthermore, 95 controls were investigated. Serum samples were determined for MBL by enzyme-linked immunosorbent assay (ELISA) and for serologic markers [autoantibodies against Saccharomyces cerevisiae (ASCA) and perinuclear components of neutrophils (pANCA)] by indirect immunofluorescent assay. NOD2/CARD15 variants were tested by polymerase chain reaction/restriction fragment length polymorphism. RESULTS The MBL serum concentration was significantly lower in IBD patients(both with CD and UC) compared to controls (IBD, p=0.007, CD, p=0.04, UC p=0.004). Prevalence of low MBL level (<500 ng/mL) was significantly higher in both CD and UC groups compared to controls (p=0.002 and p=0.006). Furthermore, low MBL level was associated with isolated ileal involvement (p=0.01) and MBL deficiency (<100 ng/mL) with male gender (p=0.004) in patients with CD. We failed to confirm any correlation between MBL deficiency and serum autoantibodies or NOD2/CARD15 variants. CONCLUSIONS Our results suggest that low MBL associated with paediatric-onset IBD and ileal CD may be considered an additional marker of the IBD pathogenesis.
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Affiliation(s)
- Marta Kovacs
- Department of Paediatrics, Petz Aladár County and Teaching Hospital, Győr, Hungary
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Baysal E, Oguzkan-Balci S, Tunc O, Celenk F, Deniz M, Kanlikama M, Kahraman M, Pehlivan S. The polymorphisms of the MBL2 and MIF genes associated with Pediatric Cochlear Implant Patients. Int J Pediatr Otorhinolaryngol 2013; 77:338-40. [PMID: 23246423 DOI: 10.1016/j.ijporl.2012.11.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Revised: 11/15/2012] [Accepted: 11/17/2012] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Mannose-binding lectin and macrophage migration inhibitory factor gene polymorphisms are associated with several acute/chronic autoimmune or inflammatory diseases. The aim of this study was to investigate if there was any association between mannose-binding lectin 2 (MBL2) and macrophage migration inhibitory factor (MIF) gene polymorphisms and profound congenital sensorineural hearing loss in children who underwent cochlear implantation. METHODS A total of 62 patients with congenital hearing loss and 80 age- and sex-matched healthy controls were evaluated for codon 54 A/B polymorphisms in MBL2 and the-173 G/C polymorphism in MIF by using the polymerase chain reaction and restriction fragment length polymorphism method. RESULTS The frequency of the BB genotype of MBL2 and MIF -173 GC genotype were statistically significantly higher in the patient group than in the controls (p=0.0127, p=0.0408, respectively). CONCLUSION In this study, we found that a subject who is homozygous for the variant allele B of codon 54 of the MBL2and heterozygous for variant allele C of -173 MIF has a risk factor for sensorineural hearing loss.
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Affiliation(s)
- Elif Baysal
- Gaziantep University, Faculty of Medicine, Department of Otolaryngology, 27060. Sahinbey, Gaziantep, Turkey.
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RAKHMATULLINA MR, POPOV DV, PLAKHOVA KI. Current concepts of the epidemiology, clinical picture, diagnostics and therapy of non-complicated and complicated forms of the urogenital chlamydia infection in men. VESTNIK DERMATOLOGII I VENEROLOGII 2012. [DOI: 10.25208/vdv752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
The authors present the results of recent studies of the epidemiology and immunopathogenesis of non-complicated and complicated forms of the urogenital chlamydia infection in men. They also present the results of a study of clinical features of the chlamydia infection and describe up-to-date diagnostics and treatment methods.
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Mannose-binding lectin promoter polymorphisms and gene variants in pulmonary tuberculosis patients from cantabria (northern Spain). Pulm Med 2012; 2012:469128. [PMID: 23304495 PMCID: PMC3529500 DOI: 10.1155/2012/469128] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 11/16/2012] [Accepted: 11/18/2012] [Indexed: 11/18/2022] Open
Abstract
Mannose-binding lectin is a central molecule of the innate immune system. Mannose-binding lectin 2 promoter polymorphisms and structural variants have been associated with susceptibility to tuberculosis. However, contradictory results among different populations have been reported, resulting in no convincing evidence of association between mannose-binding lectin 2 and susceptibility to tuberculosis. For this reason, we conducted a study in a well genetically conserved Spanish population in order to shed light on this controversial association. We analysed the six promoter and structural mannose-binding lectin 2 gene variants in 107 patients with pulmonary tuberculosis and 441 healthy controls. Only D variant and HYPD haplotype were significantly more frequents in controls which would indicate that this allele could confer protection against pulmonary tuberculosis, but this difference disappeared after statistical correction. Neither the rest of alleles nor the haplotypes were significantly associated with the disease. These results would indicate that mannose-binding lectin promoter polymorphisms and gene variants would not be associated with an increased risk to pulmonary tuberculosis. Despite the slight trend of the D allele and HYPD haplotype in conferring protection against pulmonary tuberculosis, susceptibility to this disease would probably be due to other genetic factors, at least in our population.
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Abstract
Primary immunodeficiencies (PIDs) are severe defects in the capacity of the host to mount a proper immune response, and are characterized by an increased susceptibility to infections. Although classical immunodeficiencies have been characterized based on broad defects in cell populations (e.g. T/B cells or polymorphonuclear leukocytes) or humoral factors (e.g. antibodies or complement), specific immune defects based on well-defined molecular targets have been described more recently. Among these, genetic defects in pattern recognition receptors (PRRs), leading to impaired recognition of invading pathogens by the innate immune system, play an important role in specific defects against human pathogens. Defects have been described in three of the major families of PRRs: the Toll-like receptors, the C-type lectin receptors and the nucleotide-binding domain leucine-rich repeat-containing receptors. By contrast, no defects in the intracellular viral receptors of the RigI helicase family have been described to date. Defects in the PRRs show a broad variation in severity, have a narrow specificity for certain classes of pathogens, and often decrease in severity with age; these characteristics distinguish them from other forms of PIDs. Their discovery has led to important insights into the pathophysiology of infections, and may offer potential novel therapeutic targets for immunotherapy.
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Affiliation(s)
- M G Netea
- Department of Medicine and Nijmegen, Institute for Infection, Inflammation & Immunity (N4i), Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.
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