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Teräsjärvi J, Kainulainen L, Peltola V, Mertsola J, Hakanen A, He Q. Genetic polymorphisms of TLR1, TLR2, TLR3 and TLR4 in patients with recurrent or severe infections. Int J Immunogenet 2024; 51:242-251. [PMID: 38706134 DOI: 10.1111/iji.12676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/25/2024] [Accepted: 04/21/2024] [Indexed: 05/07/2024]
Abstract
Toll-like receptors (TLRs) play an important role in innate immunity. Previous studies have shown that single nucleotide polymorphisms (SNPs) in the genes coding for these innate immune molecules can affect susceptibility to and the outcome of certain diseases. The aim of the present study was to examine the clinical relevance of well-studied TLR1-4 SNPs in individuals who are prone to infections. Four functional SNPs, TLR1 rs5743618 (1805C > A, Ser602Ile), TLR2 rs5743708 (2258G > A, Arg753Gln), TLR3 rs3775291 (1234C > T, Leu412Phe) and TLR4 rs4986790 (896A > G, Asp299Gly), were analysed in 155 patients with recurrent respiratory infections (n = 84), severe infections (n = 15) or common variable immunodeficiency (n = 56), and in 262 healthy controls, using the High Resolution Melting Analysis method. Polymorphisms of TLR2 rs5743708 (odds ratio [OR] 3.16; 95% confidence interval [CI] 1.45-6.83, p = .004, ap = .016) and TLR4 rs4986790 (OR 1.8; 95% CI 1.05-3.12, p = .028, ap = .112) were more frequent in patients with recurrent or severe infections than in controls. Interestingly, seven patients were found to carry both variant genotypes of TLR2 and TLR4, whereas none of the control group carried such genotypes (p ≤ .0001). Moreover, TLR2 polymorphism was associated with increased risk for acute otitis media episodes (OR, 3.02; 95% CI 1.41-6.47; p = .012). This study indicates that children and adults who are more prone to recurrent or severe respiratory infections carry one or both variant types of TLR2 and TLR4 more often than control subjects. Genetic variations of TLRs help explain why some children are more susceptible to respiratory infections.
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Affiliation(s)
- Johanna Teräsjärvi
- Institute of Biomedicine, Research Center of Infections and Immunity, University of Turku, Turku, Finland
| | - Leena Kainulainen
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland
- Department of Medicine, Turku University Hospital, Turku, Finland
| | - Ville Peltola
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
| | - Jussi Mertsola
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
| | - Antti Hakanen
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
- Department of Clinical Microbiology, Turku University Hospital, Turku, Finland
| | - Qiushui He
- Institute of Biomedicine, Research Center of Infections and Immunity, University of Turku, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
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Teräsjärvi J, Tenhu E, Cruzeiro ML, Savonius O, Rugemalira E, He Q, Pelkonen T. Gene polymorphisms of IL-17A and bacterial meningitis in Angolan children. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2024; 118:105553. [PMID: 38228216 DOI: 10.1016/j.meegid.2024.105553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/03/2024] [Accepted: 01/12/2024] [Indexed: 01/18/2024]
Abstract
Interleukin (IL)-17 A plays a crucial role in protecting hosts from invading bacterial pathogens. In this study, we investigated if single nucleotide polymorphisms (SNPs) in IL-17A are associated with susceptibility and outcome of bacterial meningitis (BM) in Angolan children. The study sample comprised 241 confirmed BM patients and 265 controls, which were matched for age and ethnicity. Three IL-17A SNPs - rs2275913 (-197G > A), rs8193036 (-737C > T) and rs4711998 (-877 A > G) - were determined by high-resolution melting analysis (HRMA). The frequency of variant genotype rs4711998 was significantly higher in patients with BM caused by Haemophilus influenzae (odds ratio [OR] 3.5; 95% confidence interval [CI] 1.49-8.23; P = 0.0025) than in controls. Also, patients with BM caused by Gram-negative bacteria and who carried the variant genotype rs2275913 had a lower glucose level (P = 0.0051) in cerebrospinal fluid (CSF). Patients with BM caused by Streptococcus pneumoniae who carried the variant type rs8193036 had a reduced risk for severe neurological sequelae (OR: 0.14; 95% CI: 0.029-0.68; P = 0.0079), blindness (OR: 0.012; 95% CI: 0.012-0.87; P = 0.017) and ataxia (OR: 0.28; 95% CI: 0.091-0.83; P = 0.023). This study suggests an association of IL-17A genetic variations with susceptibility and outcome of bacterial meningitis in Angolan children.
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Affiliation(s)
- Johanna Teräsjärvi
- Institute of Biomedicine, Research Centre of Infections and Immunity, University of Turku, Turku, Finland
| | - Elina Tenhu
- Institute of Biomedicine, Research Centre of Infections and Immunity, University of Turku, Turku, Finland
| | | | - Okko Savonius
- Pediatrics, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; New Children's Hospital, Pediatric Research Center, Helsinki, Finland
| | - Emilie Rugemalira
- Pediatrics, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; New Children's Hospital, Pediatric Research Center, Helsinki, Finland
| | - Qiushui He
- Institute of Biomedicine, Research Centre of Infections and Immunity, University of Turku, Turku, Finland; InFLAMES Research Flagship Centre, University of Turku, Turku, Finland.
| | - Tuula Pelkonen
- Hospital Pediátrico David Bernardino, Luanda, Angola; Pediatrics, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; New Children's Hospital, Pediatric Research Center, Helsinki, Finland
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Silva MJA, Silva CS, da Silva Vieira MC, dos Santos PAS, Frota CC, Lima KVB, Lima LNGC. The Relationship between TLR3 rs3775291 Polymorphism and Infectious Diseases: A Meta-Analysis of Case-Control Studies. Genes (Basel) 2023; 14:1311. [PMID: 37510216 PMCID: PMC10379146 DOI: 10.3390/genes14071311] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/30/2023] Open
Abstract
As the host's first line of defense against pathogens, Toll-like receptors (TLRs), such as the TLR3, are genes encoding transmembrane receptors of the same name. Depending on their expression, TLRs cause a pro- or anti-inflammatory response. The purpose of the article was to determine whether there is an association between the Toll-like receptor 3 (TLR3) rs3775291 Single Nucleotide Polymorphism-SNP and susceptibility to infections. This review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 guidelines and was registered in PROSPERO under the code CRD42023429533. A systematic search for relevant studies was performed using PubMed, Scopus, SciELO, Google Scholar, and Science Direct by the MeSH descriptors and the Boolean Operator "AND": "Infections"; "TLR3"; "SNP", between January 2005 and July 2022. Summary odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were calculated for genotypic comparison assuming a dominant genetic model (CT + TT vs. CC). A meta-analysis of 18 studies consisting of 3118 cases and 4368 controls found a significant association for risk between the presence of the TLR3 SNP rs3775291 and infections as part of the general analysis (OR = 1.16, 95% CI = 1.04-1.28, p = 0.004). In the subgroups of continents, the SNP had a protective role in Europe for 1044 cases and 1471 controls (OR = 0.83, 95% CI = 0.70-0.99, p = 0.04); however, the Asian (for 1588 patients and 2306 controls) and American (for 486 patients and 591 controls) continents had an increase in infectious risk (OR = 1.37, 95% CI = 1.19-1.58, p < 0.001; OR = 1.42, 95% CI = 1.08-1.86, and p = 0.01, respectively). Heterogeneity between studies was detected (I2 = 58%) but was explained in meta-regression by the subgroup of continents itself and publication bias was not evident. The results of the meta-analysis suggest a significant association between the TLR3 rs3775291 polymorphism and susceptibility to infections. Thus, when analyzing subgroups, the Asian and American continents showed that this SNP confers a higher risk against infections in a dominant genotypic model. Therefore, more studies are necessary to fully elucidate the role of TLR3 rs3775291 in infections.
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Affiliation(s)
- Marcos Jessé Abrahão Silva
- Graduate Program in Epidemiology and Health Surveillance (PPGEVS), Evandro Chagas Institute (IEC), Ananindeua 67030-000, PA, Brazil;
| | - Caroliny Soares Silva
- Postgraduate Program in Parasitic Biology in the Amazon (PPGBPA), University of State of Pará (UEPA), Belém 66087-670, PA, Brazil; (C.S.S.); (M.C.d.S.V.); (P.A.S.d.S.)
| | - Marcelo Cleyton da Silva Vieira
- Postgraduate Program in Parasitic Biology in the Amazon (PPGBPA), University of State of Pará (UEPA), Belém 66087-670, PA, Brazil; (C.S.S.); (M.C.d.S.V.); (P.A.S.d.S.)
| | - Pabllo Antonny Silva dos Santos
- Postgraduate Program in Parasitic Biology in the Amazon (PPGBPA), University of State of Pará (UEPA), Belém 66087-670, PA, Brazil; (C.S.S.); (M.C.d.S.V.); (P.A.S.d.S.)
| | - Cristiane Cunha Frota
- Department of Pathology and Legal Medicine, Faculty of Medicine, Federal University of Ceará (UFC), Fortaleza 60441-750, CE, Brazil;
| | - Karla Valéria Batista Lima
- Bacteriology and Mycology Section of the Evandro Chagas Institute (IEC), Ananindeua 67030-000, PA, Brazil;
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Zhai S, Yang Y, Wu Y, Li J, Li Y, Wu G, Liang J, Gao H. A visual CRISPR/dCas9-mediated enzyme-linked immunosorbent assay for nucleic acid detection with single-base specificity. Talanta 2023; 257:124318. [PMID: 36796171 DOI: 10.1016/j.talanta.2023.124318] [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: 10/20/2022] [Revised: 01/17/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023]
Abstract
Specific and economical nucleic acid detection is crucial for molecular diagnoses in resource-limited settings. Various facile readout approaches have been developed for nucleic acid detection, but they have limited specificity. Herein, nuclease-dead Cas9 (dCas9)/sgRNA was used as an excellent DNA recognition probe system to develop a visual clustered regularly interspaced short palindromic repeats (CRISPR)/dCas9-mediated enzyme-linked immunosorbent assay (ELISA) for specific and sensitive detection of cauliflwer mosaic virus 35s (CaMV35S) promoter in genetically modified (GM) crops. In this work, the CaMV35S promoter was amplified with biotinylated primers, and then precisely bound with dCas9 in the presence of sgRNA. The formed complex was captured by antibody-coated microplate and bound to a streptavidin-labeled horseradish peroxidase probe for the visual detection. Under the optimal conditions, dCas9-ELISA could detect CaMV35s promoter as low as 12.5 copies μL-1. Moreover, the proposed method was capable to distinguish the target sequence with single-base specificity. Coupled with one-step extraction and recombinase polymerase amplification, dCas9-ELISA can identify actual GM rice seeds within 1.5 h from sampling to results without expensive equipment and technical expertise. Therefore, the proposed method offers a specific, sensitive, rapid and cost-effective detection platform for molecular diagnoses.
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Affiliation(s)
- Shanshan Zhai
- Key Laboratory of Agricultural Genetically Modified Organisms Traceability of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
| | - Yao Yang
- Key Laboratory of Agricultural Genetically Modified Organisms Traceability of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
| | - Yuhua Wu
- Key Laboratory of Agricultural Genetically Modified Organisms Traceability of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
| | - Jun Li
- Key Laboratory of Agricultural Genetically Modified Organisms Traceability of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
| | - Yunjing Li
- Key Laboratory of Agricultural Genetically Modified Organisms Traceability of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
| | - Gang Wu
- Key Laboratory of Agricultural Genetically Modified Organisms Traceability of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
| | - Jingang Liang
- Development Center of Science and Technology, Ministry of Agriculture and Rural Affairs, Beijing, 100176, China.
| | - Hongfei Gao
- Key Laboratory of Agricultural Genetically Modified Organisms Traceability of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
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Shri Preethi M, Asha Devi S. An attempt to unravel the association of TAGAP gene SNPs with rheumatoid arthritis in the Indian population using high-resolution melting analysis. Gene 2022; 834:146584. [PMID: 35597527 DOI: 10.1016/j.gene.2022.146584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 05/12/2022] [Accepted: 05/16/2022] [Indexed: 11/29/2022]
Abstract
Rheumatoid arthritis (RA) is an inflammatory disease that causes inflammation of the synovium, cartilage, and deformity of the bones. Single nucleotide polymorphism (SNPs) at 5'UTR rs1738074 (A/G) and a novel candidate non-synonymous single nucleotide polymorphism (nsSNP) rs759674898 (G/A) of TAGAP gene were studied for its association with RA in the Indian population. Real-time PCR coupled with High Resolution Melting analysis technique was employed to detect SNPs. The resulting outcomes were confirmed using the "traditional" Sanger's sequencing method. From this study, we identified that rs1738074 SNP was associated with RA. The odds ratio (OR) obtained for the AG genotype was 3.3379 (Confidence Interval (C.I) 1.7881 to 6.2350); for AA genotype 0.5510 (C.I 0.3043 to 0.9979) and GG genotype 0.5609 (CI 0.3062 to 1.0275). The study also confirmed that AG heterozygous condition had more significant association with RA than AA and GG genotypes. The obtained relative risk (RR) for the AA genotype was 0.676; for AG genotype (RR = 2.253) and GG genotype (RR = 0.6741). The novel candidate nsSNP rs759674898 had only the G allele, and the A allele was not detected in the population studied. In conclusion, this study emphasizes that the rs1738074 SNP in the TAGAP gene's 5'UTR is substantially linked to RA in the Indian population.
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Affiliation(s)
- M Shri Preethi
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, TN, India
| | - S Asha Devi
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, TN, India.
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Comparison of high-resolution melting analysis with direct sequencing for detection of FLT3-TKD, FLT3-ITD and WT1 mutations in acute myeloid leukemia. Cancer Treat Res Commun 2021; 28:100432. [PMID: 34303121 DOI: 10.1016/j.ctarc.2021.100432] [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: 04/04/2021] [Revised: 05/28/2021] [Accepted: 07/06/2021] [Indexed: 11/20/2022]
Abstract
BACKGROUND Acute Myeloid Leukemia (AML) is a group of hematologic diseases characterized by a variety of clinically important genetic alterations. Genetic mutations affecting the FMS-like receptor tyrosine kinase-3 (FLT3) and Wilm's tumor (WT-1) genes are associated with poor prognosis in AML. In this work, efficiency of HRM method for detection of FLT3-ITD, FLT3-TKD, and WT-1 mutations was assessed in comparison with direct sequencing. METHOD A total of 58 formalin-fixed, paraffin-embedded BM biopsy specimens of AML patients were analyzed. Mutation detection was performed by HRM method and the results were consequently compared with direct sequencing RESULTS: FLT3 and WT-1 mutations were detected in 21 (36.2%) and 3 (5.17%) samples, respectively. Among all FLT3 mutations, 10 (17.2%) and 11 (18.2%) samples were harboring the FLT3-ITD and-TKD gene mutations, respectively. Frequency of the FLT3-ITD was not statistically different in females (51%) and males (49%). Also, FLT3-TKD was more common in males although the differences in gender distribution were not statistically significant (P = 0.721 and P = 0.626, respectively). CONCLUSIONS Regarded as the desirable characteristic, the present study is generally distinguished by the similar previous ones due to assessing the FFPE BM tissue from the perspective of the type of assessed sample. This discrepancy between our results and those in prior studies may be due to the disparity of the studied population size, adopted methods as well as the sample type. In this survey, regarding to low amount of extracted DNA from the paraffinized samples, the HRM method was efficient in determining the mentioned mutations.
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Korhonen LS, Lukkarinen M, Kantojärvi K, Räty P, Karlsson H, Paunio T, Peltola V, Karlsson L. Interactions of genetic variants and prenatal stress in relation to the risk for recurrent respiratory infections in children. Sci Rep 2021; 11:7589. [PMID: 33828172 PMCID: PMC8027646 DOI: 10.1038/s41598-021-87211-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 03/17/2021] [Indexed: 12/24/2022] Open
Abstract
Genetic variants may predispose children to recurrent respiratory infections (RRIs) but studies on genotype-environment interaction are rare. We hypothesized that the risk for RRIs is elevated in children with innate immune gene variants, and that prenatal exposure to maternal psychological distress further increases the risk. In a birth cohort, children with RRIs (n = 96) were identified by the age of 24 months and compared with the remaining cohort children (n = 894). The risk for RRIs in children with preselected genetic variants and the interaction between maternal distress during pregnancy and child genotype were assessed with logistic regression. The IL6 minor allele G was associated with elevated risk for RRIs (OR 1.55; 95% CI 1.14-2.12). Overall, there was no interaction between maternal psychological distress and child genotype. Exploratory analyses showed that, the association between the variant type of IL6 and the risk for RRIs was dependent on prenatal exposure to maternal psychological distress in males (OR 1.96; 95% CI 1.04-3.67). Our study didn't find genotype-environment interaction between prenatal maternal distress and child genotype. Exploratory analyses suggest sex differences in gene-environment interaction related to susceptibility to RRIs.
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Affiliation(s)
- Laura S Korhonen
- Department of Clinical Medicine, FinnBrain Birth Cohort Study, Turku Brain and Mind Center, University of Turku, Turku, Finland. .,Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, P.O. Box 52, 20521, Turku, Finland.
| | - Minna Lukkarinen
- Department of Clinical Medicine, FinnBrain Birth Cohort Study, Turku Brain and Mind Center, University of Turku, Turku, Finland.,Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, P.O. Box 52, 20521, Turku, Finland
| | - Katri Kantojärvi
- Genomics and Biobank Unit, Finnish Institute for Health and Welfare, Helsinki, Finland.,Department of Psychiatry and SleepWell Research Program, Faculty of Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Panu Räty
- Department of Clinical Medicine, FinnBrain Birth Cohort Study, Turku Brain and Mind Center, University of Turku, Turku, Finland
| | - Hasse Karlsson
- Department of Clinical Medicine, FinnBrain Birth Cohort Study, Turku Brain and Mind Center, University of Turku, Turku, Finland.,Department of Psychiatry, Turku University Hospital and University of Turku, Turku, Finland.,Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland
| | - Tiina Paunio
- Department of Clinical Medicine, FinnBrain Birth Cohort Study, Turku Brain and Mind Center, University of Turku, Turku, Finland.,Genomics and Biobank Unit, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Ville Peltola
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, P.O. Box 52, 20521, Turku, Finland
| | - Linnea Karlsson
- Department of Clinical Medicine, FinnBrain Birth Cohort Study, Turku Brain and Mind Center, University of Turku, Turku, Finland.,Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland
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Gene Polymorphisms of TLR4 and TLR9 and Haemophilus influenzae Meningitis in Angolan Children. Genes (Basel) 2020; 11:genes11091099. [PMID: 32967147 PMCID: PMC7564843 DOI: 10.3390/genes11091099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/16/2020] [Accepted: 09/18/2020] [Indexed: 12/26/2022] Open
Abstract
Bacterial meningitis (BM) is a severe disease caused by various bacterial pathogens. Toll-like receptors (TLRs) protect humans from invading pathogens. In this study, we determined whether single nucleotide polymorphisms (SNPs) of TLR4 and TLR9 are associated with susceptibility to and outcome of BM in Angolan children. Samples were taken from 241 patients and 265 age-matched ethnic controls. The SNPs TLR4 rs4986790 (896A > G) and TLR9 rs187084 (−1486T > C) were determined by high-resolution melting analysis (HRMA). The frequency of variant genotypes in TLR4 was significantly higher in patients with Haemophilus influenzae meningitis than controls (odds ratio (OR), 2.5; 95% confidence interval (CI), 1.2–5.4; p = 0.021), whereas the frequency of variant genotypes in TLR9 was significantly lower in patients with H. influenzae meningitis than controls (OR, 0.4; 95% CI, 0.2–0.9; p = 0.036). No such differences were found with other causative pathogens, such as Streptococcus pneumoniae and Neisseria meningitidis. At the time of discharge, patients with meningitis caused by Gram-negative bacteria who were carriers of variant TLR4 genotypes had a higher risk of ataxia (OR, 12.91; 95% CI, 1.52–109.80; p = 0.019) and other neurological sequelae (OR, 11.85; 95% CI, 1.07–131.49; p = 0.044) than those with the wild-type TLR4 genotype. Our study suggests an association between H. influenzae meningitis and genetic variation between TLR4 and TLR9 in Angolan children.
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Korppi M, Teräsjärvi J, Lauhkonen E, Huhtala H, Nuolivirta K, He Q. Toll-like receptor 4 polymorphisms were associated with low serum pro-inflammatory cytokines in BCG osteitis survivors. Acta Paediatr 2020; 109:1417-1422. [PMID: 31755594 DOI: 10.1111/apa.15104] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/14/2019] [Accepted: 11/20/2019] [Indexed: 12/12/2022]
Abstract
AIM The aim of the study was to evaluate the association of Toll-like receptor 4 (TLR4) gene variations with osteitis risk after Bacillus Calmette-Guérin (BCG) vaccination given at birth and with serum cytokine levels measured in adulthood. METHODS We determined the TLR4 rs4986790 single-nucleotide polymorphism (SNP) in 132 study subjects with BCG osteitis in infancy and compared the genotype distributions and allele frequencies between them and population controls. Serum concentrations of 11 cytokines measured in adulthood were compared between study subjects with the wild vs variant TLR4 rs4986790 genotype. RESULTS The genotypes and allele frequencies of the TLR4 rs4986790 SNP did not differ between BCG osteitis cases and population controls. Instead, subjects with the variant genotype presented with lower serum interleukin (IL) concentrations of the pro-inflammatory IL-6, IL-17A and IL-12 cytokines and with marginally lower interferon-γ concentrations, but with higher serum anti-inflammatory IL-4 concentration. The results concern also the TLR4 rs4986791, since these two SNPs are co-segregating in the Finnish population. CONCLUSION The findings suggest that TLR4 has no significant role in the emergence of osteitis after newborn BCG vaccination, but the variant genotypes of the TLR4 rs4986790 and rs4986791 may impair the production of pro-inflammatory cytokines.
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Affiliation(s)
- Matti Korppi
- Center for Child Health Research Faculty of Medicine and Life Sciences University of Tampere and University Hospital Tampere Finland
| | | | - Eero Lauhkonen
- Center for Child Health Research Faculty of Medicine and Life Sciences University of Tampere and University Hospital Tampere Finland
| | - Heini Huhtala
- Faculty of Social Sciences Tampere University Tampere Finland
| | - Kirsi Nuolivirta
- Department of Pediatrics Seinäjoki Central Hospital Seinäjoki Finland
| | - Qiushui He
- Institute of Biomedicine University of Turku Turku Finland
- Department of Medical Microbiology Capital Medical University Beijing China
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Törmänen S, Teräsjärvi J, Lauhkonen E, Helminen M, Koponen P, Korppi M, Nuolivirta K, He Q. TLR5 rs5744174 gene polymorphism is associated with the virus etiology of infant bronchiolitis but not with post-bronchiolitis asthma. Health Sci Rep 2018; 1:e38. [PMID: 30623075 PMCID: PMC6266536 DOI: 10.1002/hsr2.38] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/09/2018] [Accepted: 03/13/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND AND AIM Bronchiolitis is a leading cause of hospitalization in infants and is associated with a risk of subsequent asthma. The innate immunity genes, such as those encoding toll-like receptors (TLRs), are likely to play a role in bronchiolitis and post-bronchiolitis outcome. Thus far, only one study has considered TLR5 genes in respiratory syncytial virus (RSV) bronchiolitis. The aim of this study was to investigate the association of TLR5 gene polymorphism with virus etiology and severity of bronchiolitis, and with post-bronchiolitis asthma. METHODS We recruited 164 infants (age < 6 months) hospitalized for bronchiolitis in this study and determined TLR5 rs5744174 (C > T) single nucleotide polymorphism, virus etiology and severity markers of bronchiolitis, and presence of post-bronchiolitis asthma until age 11 to 13 years. RESULTS RSV was detected in 113 (68.9%), rhinovirus in 19 (11.6%), and some other virus in 20 (12.2%) cases. Non-RSV etiology was more common among infants with the variant CT or TT genotype in the TLR5 rs5744174 gene than in those with the CC genotype (89.7% vs 71.7%, P = 0.03). TLR5 rs5744174 polymorphism was not associated with the need of supplementary oxygen or feeding support, with the length of hospital stay, or with post-bronchiolitis asthma at any age. CONCLUSION The TLR5 rs5744174 variant genotype may increase the susceptibility to bronchiolitis not caused by RSV.
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Affiliation(s)
- Sari Törmänen
- Center for Child Health ResearchTampere University and University HospitalTampereFinland
| | - Johanna Teräsjärvi
- Department of Medical Microbiology and ImmunologyTurku UniversityTurkuFinland
| | - Eero Lauhkonen
- Center for Child Health ResearchTampere University and University HospitalTampereFinland
| | - Merja Helminen
- Center for Child Health ResearchTampere University and University HospitalTampereFinland
| | - Petri Koponen
- Center for Child Health ResearchTampere University and University HospitalTampereFinland
| | - Matti Korppi
- Center for Child Health ResearchTampere University and University HospitalTampereFinland
| | - Kirsi Nuolivirta
- Department of PediatricsSeinäjoki Central HospitalSeinäjokiFinland
| | - Qiushui He
- Department of Medical Microbiology and ImmunologyTurku UniversityTurkuFinland
- Department of Medical MicrobiologyCapital Medical UniversityBeijingChina
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Holster A, Teräsjärvi J, Lauhkonen E, Törmänen S, Helminen M, Koponen P, Korppi M, Peltola V, He Q, Nuolivirta K. IL-17A gene polymorphism rs2275913 is associated with the development of asthma after bronchiolitis in infancy. Allergol Int 2018. [PMID: 28647382 DOI: 10.1016/j.alit.2017.05.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Interleukin-17 (IL-17A) is a mainly pro-inflammatory cytokine, and IL-17 signaling implicates in the development of allergic asthma. The polymorphism rs2275913 in the promoter region of the IL-17A gene has in previous studies been associated with asthma susceptibility. The objective was to evaluate the association between IL-17A rs2275913 (-197G>A) polymorphism and post-bronchiolitis asthma and/or allergic rhinitis in a prospective 11-13 years post-bronchiolitis follow-up. METHODS 166 previously healthy full-term infants, hospitalized for bronchiolitis at age less than 6 months, were invited to follow-up visits at the ages of 5-7 years and 11-13 years. Asthma diagnoses and presumptive symptoms, allergic rhinitis and use of inhaled corticosteroids (ICS) were registered. Blood samples for IL-17A rs2275913 (-197G>A) polymorphism were obtained during hospitalization or at the 5-7 years control visit. RESULTS There were no significant differences between children with the wild GG and variant GA or AA genotype in the severity of bronchiolitis during hospitalization or in the outcomes until the age 5-7 years. At 11-13 years of age, children with the variant GA or AA genotype had significantly less often current asthma, use of ICSs during last 12 months or allergic rhinitis than those with the wild GG genotype. The ICS use during last 12 months retained the statistical significance in adjusted analyses (adjusted OR 0.25), whereas current asthma and allergic rhinitis marginally lost it. CONCLUSIONS The IL-17A rs2275913 (-197G>A) polymorphism decreased the risk of post-bronchiolitis asthma at 11-13 years of age, but not earlier in life, in the present prospective, long-term follow-up study.
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Liehu-Martiskainen M, Korppi M, Teräsjärvi J, Vuononvirta J, Huhtala H, Nuolivirta K, Kröger L, Peltola V, Pöyhönen L, He Q. Interleukin 17A gene polymorphism rs2275913 is associated with osteitis after the Bacillus Calmette-Guérin vaccination. Acta Paediatr 2017; 106:1837-1841. [PMID: 28731539 DOI: 10.1111/apa.14000] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/06/2017] [Accepted: 07/18/2017] [Indexed: 12/21/2022]
Abstract
AIM Interleukin-17 (IL-17) appears to promote the host's defence against mycobacterial infections. This study evaluated the association between IL17A gene polymorphism and the risk of Bacillus Calmette-Guérin (BCG) osteitis after newborn vaccination and between IL17A gene polymorphism and IL-17A concentrations in serum. METHODS IL17A rs2275913 gene polymorphisms and serum IL-17A concentrations were studied in 132 adults aged 21-49 years from across Finland, who had BCG osteitis in infancy after a newborn BCG vaccination. The subjects were recruited in 2007-2008, and their whole-blood samples were sent to the National Institute for Health and Welfare, Turku, Finland. Their genotypes and minor allele frequencies were compared with 405 population-based unvaccinated controls aged two to three months from a prospective birth cohort study. RESULTS The genotypes and allele frequencies of IL17A rs2275913 differed significantly between the former BCG osteitis patients and controls. The genotype was variant in 75.8% of cases and 64.0% of controls (p = 0.012), and the minor allele frequency was 50.0% in the cases and 41.6% of the controls (p = 0.009). Serum IL-17 concentrations did not differ significantly between the cases with wild or variant genotypes. CONCLUSION IL17A rs2275913 gene polymorphism was associated with a risk of BCG osteitis after vaccination.
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Affiliation(s)
- Milla Liehu-Martiskainen
- Center for Child Health Research; Faculty of Medicine and Life Sciences; University of Tampere and University Hospital; Tampere Finland
| | - Matti Korppi
- Center for Child Health Research; Faculty of Medicine and Life Sciences; University of Tampere and University Hospital; Tampere Finland
| | - Johanna Teräsjärvi
- Department of Medical Microbiology and Immunology; University of Turku; Turku Finland
| | - Juho Vuononvirta
- Department of Medical Microbiology and Immunology; University of Turku; Turku Finland
| | - Heini Huhtala
- School of Health Sciences; Faculty of Social Sciences; University of Tampere; Tampere Finland
| | - Kirsi Nuolivirta
- Department of Pediatrics; Seinäjoki Central Hospital; Seinäjoki Finland
| | - Liisa Kröger
- Department of Pediatrics; Kuopio University Hospital; Kuopio Finland
| | - Ville Peltola
- Department of Pediatrics; University of Turku and University Hospital; Turku Finland
| | - Laura Pöyhönen
- St. Giles Laboratory of Human Genetics of Infectious Diseases; Rockefeller Branch; The Rockefeller University; New York NY USA
| | - Qiushui He
- Department of Medical Microbiology and Immunology; University of Turku; Turku Finland
- Department of Medical Microbiology; Capital Medical University; Beijing China
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Korppi M, Teräsjärvi J, Liehu-Martiskainen M, Lauhkonen E, Vuononvirta J, Nuolivirta K, Kröger L, Pöyhönen L, Karjalainen MK, He Q. Haplotype of the Interleukin 17A gene is associated with osteitis after Bacillus Calmette-Guerin vaccination. Sci Rep 2017; 7:11691. [PMID: 28916742 PMCID: PMC5601914 DOI: 10.1038/s41598-017-12113-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 09/04/2017] [Indexed: 12/15/2022] Open
Abstract
Bacillus Calmette-Guerin (BCG) osteitis was more common in Finland than elsewhere at the time when universal BCG vaccinations were given to Finnish newborns. There is evidence that IL-17 plays a role in the defense against tuberculosis. The aim of this study was to evaluate the associations of IL17A rs4711998, IL17A rs8193036 and IL17A rs2275913 single-nucleotide polymorphisms (SNPs) with the risk of BCG osteitis after newborn vaccination. IL17A rs4711998, rs8193036 and rs2275913 SNPs were determined in 131 adults had presented with BCG osteitis after newborn BCG vaccination. We analyzed, using the HaploView and PLINK programs, whether allele or haplotype frequencies of these SNPs differ between the former BCG osteitis patients and Finnish population controls. Of the three IL17A SNPs studied, rs4711998 associated nominally with BCG osteitis; minor allele frequency was 0.215 in 130 BCG osteitis cases and 0.298 in 99 controls (p = 0.034). Frequency of the second common haplotype (GTA) differed significantly between BCG osteitis cases and controls (0.296 vs. 0.184, p = 0.040 after multi-testing correction). The GTA haplotype of the IL17A SNPs rs4711998, rs8193036 and rs2275913 was associated with osteitis after BCG vaccination.
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Affiliation(s)
- Matti Korppi
- Center for Child Health Research, University of Tampere and University Hospital, Tampere, Finland.
| | - Johanna Teräsjärvi
- Department of Medical Microbiology and Immunology, University of Turku, Turku, Finland
| | - Milla Liehu-Martiskainen
- Center for Child Health Research, University of Tampere and University Hospital, Tampere, Finland
| | - Eero Lauhkonen
- Center for Child Health Research, University of Tampere and University Hospital, Tampere, Finland
| | - Juho Vuononvirta
- Department of Medical Microbiology and Immunology, University of Turku, Turku, Finland
| | - Kirsi Nuolivirta
- Department of Pediatrics, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Liisa Kröger
- Department of Pediatrics, Kuopio University Hospital, Kuopio, Finland
| | - Laura Pöyhönen
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY, USA
| | - Minna K Karjalainen
- PEDEGO Research Unit and Medical Research Center Oulu, University of Oulu, Oulu, Finland.,Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
| | - Qiushui He
- Department of Medical Microbiology and Immunology, University of Turku, Turku, Finland.,Department of Medical Microbiology, Capital Medical University, Beijing, China
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