The relationship between 896A/G (rs4986790) polymorphism of TLR4 and infectious diseases: A meta-analysis
Toll-like Receptors (TLRs), such as the TLR4, are genes encoding transmembrane receptors of the same name, which induce a pro- or anti-inflammatory response according to their expression as the host’s first line of defense against pathogens, such as infectious ones. Single nucleotide polymorphisms (...
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| Format: | Article |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Genetics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fgene.2022.1045725/full |
| _version_ | 1811305334100197376 |
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| author | Marcos Jessé Abrahão Silva Davi Silva Santana Letícia Gomes de Oliveira Ellerson Oliveira Loureiro Monteiro Luana Nepomuceno Gondim Costa Lima |
| author_facet | Marcos Jessé Abrahão Silva Davi Silva Santana Letícia Gomes de Oliveira Ellerson Oliveira Loureiro Monteiro Luana Nepomuceno Gondim Costa Lima |
| author_sort | Marcos Jessé Abrahão Silva |
| collection | DOAJ |
| description | Toll-like Receptors (TLRs), such as the TLR4, are genes encoding transmembrane receptors of the same name, which induce a pro- or anti-inflammatory response according to their expression as the host’s first line of defense against pathogens, such as infectious ones. Single nucleotide polymorphisms (SNPs) are the most common type of mutation in the human genome and can generate functional modification in genes. The aim of this article is to review in which infectious diseases there is an association of susceptibility or protection by the TLR4 SNP rs4986790. A systematic review and meta-analysis of the literature was conducted in the Science Direct, PUBMED, MEDLINE, and SciELO databases between 2011 and 2021 based on the dominant genotypic model of this SNP for general and subgroup analysis of infectious agent type in random effect. Summary odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were calculated for genotypic comparison. I2 statistics were calculated to assess the presence of heterogeneity between studies and funnel plots were inspected for indication of publication bias. A total of 27 articles were included, all in English. Among the results achieved, the categories of diseases that were most associated with the SNP studied were in decreasing order of number of articles: infections by bacteria (29.63%); caused by viruses (22.23%); urinary tract infection—UTI (7.4%), while 11 studies (40.74%) demonstrated a nonsignificant association. In this meta-analysis, a total of 5599 cases and 5871 controls were finalized. The present meta-analysis suggests that there is no significant association between TLR4-rs4986790 SNP and infections (OR = 1,11; 95% CI: 0,75–1,66; p = 0,59), but in the virus subgroup it was associated with a higher risk (OR = 2,16; 95% CI: 1,09–4,30; p = 0,03). The subgroups of bacteria and parasites did not show statistical significance (OR = 0,86; 95% CI: 0,56–1,30; p = 0,47, and no estimate of effects, respectively). Therefore, it has been shown that a diversity of infectious diseases is related to this polymorphism, either by susceptibility or even severity to them, and the receptor generated is also crucial for the generation of cell signaling pathways and immune response against pathogens. |
| first_indexed | 2024-04-13T08:24:35Z |
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| id | doaj.art-6eaf3a7262824153be8d0763e30d93bd |
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| last_indexed | 2024-04-13T08:24:35Z |
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| spelling | doaj.art-6eaf3a7262824153be8d0763e30d93bd2022-12-22T02:54:32ZengFrontiers Media S.A.Frontiers in Genetics1664-80212022-11-011310.3389/fgene.2022.10457251045725The relationship between 896A/G (rs4986790) polymorphism of TLR4 and infectious diseases: A meta-analysisMarcos Jessé Abrahão Silva0Davi Silva Santana1Letícia Gomes de Oliveira2Ellerson Oliveira Loureiro Monteiro3Luana Nepomuceno Gondim Costa Lima4Evandro Chagas Institute (IEC), Ananindeua, BrazilInstitute of Health Sciences (ICS), Federal University of Pará (UFPA), Belém, BrazilEvandro Chagas Institute (IEC), Ananindeua, BrazilDepartment of Biomedicine, University of the Amazon (UNAMA), Ananindeua, BrazilEvandro Chagas Institute (IEC), Ananindeua, BrazilToll-like Receptors (TLRs), such as the TLR4, are genes encoding transmembrane receptors of the same name, which induce a pro- or anti-inflammatory response according to their expression as the host’s first line of defense against pathogens, such as infectious ones. Single nucleotide polymorphisms (SNPs) are the most common type of mutation in the human genome and can generate functional modification in genes. The aim of this article is to review in which infectious diseases there is an association of susceptibility or protection by the TLR4 SNP rs4986790. A systematic review and meta-analysis of the literature was conducted in the Science Direct, PUBMED, MEDLINE, and SciELO databases between 2011 and 2021 based on the dominant genotypic model of this SNP for general and subgroup analysis of infectious agent type in random effect. Summary odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were calculated for genotypic comparison. I2 statistics were calculated to assess the presence of heterogeneity between studies and funnel plots were inspected for indication of publication bias. A total of 27 articles were included, all in English. Among the results achieved, the categories of diseases that were most associated with the SNP studied were in decreasing order of number of articles: infections by bacteria (29.63%); caused by viruses (22.23%); urinary tract infection—UTI (7.4%), while 11 studies (40.74%) demonstrated a nonsignificant association. In this meta-analysis, a total of 5599 cases and 5871 controls were finalized. The present meta-analysis suggests that there is no significant association between TLR4-rs4986790 SNP and infections (OR = 1,11; 95% CI: 0,75–1,66; p = 0,59), but in the virus subgroup it was associated with a higher risk (OR = 2,16; 95% CI: 1,09–4,30; p = 0,03). The subgroups of bacteria and parasites did not show statistical significance (OR = 0,86; 95% CI: 0,56–1,30; p = 0,47, and no estimate of effects, respectively). Therefore, it has been shown that a diversity of infectious diseases is related to this polymorphism, either by susceptibility or even severity to them, and the receptor generated is also crucial for the generation of cell signaling pathways and immune response against pathogens.https://www.frontiersin.org/articles/10.3389/fgene.2022.1045725/fullimmunogeneticsinfectious diseasesassociation studiessingle nucleotide polymorphismtoll-like receptor 4 (TLR4) |
| spellingShingle | Marcos Jessé Abrahão Silva Davi Silva Santana Letícia Gomes de Oliveira Ellerson Oliveira Loureiro Monteiro Luana Nepomuceno Gondim Costa Lima The relationship between 896A/G (rs4986790) polymorphism of TLR4 and infectious diseases: A meta-analysis Frontiers in Genetics immunogenetics infectious diseases association studies single nucleotide polymorphism toll-like receptor 4 (TLR4) |
| title | The relationship between 896A/G (rs4986790) polymorphism of TLR4 and infectious diseases: A meta-analysis |
| title_full | The relationship between 896A/G (rs4986790) polymorphism of TLR4 and infectious diseases: A meta-analysis |
| title_fullStr | The relationship between 896A/G (rs4986790) polymorphism of TLR4 and infectious diseases: A meta-analysis |
| title_full_unstemmed | The relationship between 896A/G (rs4986790) polymorphism of TLR4 and infectious diseases: A meta-analysis |
| title_short | The relationship between 896A/G (rs4986790) polymorphism of TLR4 and infectious diseases: A meta-analysis |
| title_sort | relationship between 896a g rs4986790 polymorphism of tlr4 and infectious diseases a meta analysis |
| topic | immunogenetics infectious diseases association studies single nucleotide polymorphism toll-like receptor 4 (TLR4) |
| url | https://www.frontiersin.org/articles/10.3389/fgene.2022.1045725/full |
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