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Han T, Liang T, Liu R, Quan Y. The association between interleukin-8 gene polymorphism and the risk of sepsis in older adults. J Orthop Surg Res 2024; 19:804. [PMID: 39609657 PMCID: PMC11603789 DOI: 10.1186/s13018-024-05296-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2024] [Accepted: 11/20/2024] [Indexed: 11/30/2024] Open
Abstract
BACKGROUND Previous studies on the relationship between interleukin-8 (IL-8) rs4073 polymorphism and sepsis susceptibility have covered contradictory results. Our purpose is to investigate whether this polymorphism confers a risk for sepsis using both experimental methods and meta-analysis. METHODS In the current study, the authoritative databases including PubMed and Embase were carefully searched and reviewed. The search period spanned from the inception of each database until June 2024. Odds ratio (OR) and 95% confidence interval (CI) were adopted to compute the association strength. A total of 480 patients and 840 healthy individuals in older adults were selected. PCR-RFLP was applied to investigate the gene polymorphism including genotype frequency and allele frequency. RESULTS In summary, no significant association was found by allele contrast (T vs. A: OR = 1.11, 95% CI = 0.75-1.62, P = 0.606), homozygote comparison (TT vs. AA: OR = 1.35, 95% CI = 0.57-3.20, P = 0.498), heterozygote comparison (AT vs. AA: OR = 1.38, 95% CI = 0.72-2.65, P = 0.668), recessive genetic model (TT vs. AA/TA: OR = 0.96, 95% CI = 0.64-1.43, P = 0.834), or dominant genetic model (TT/TA vs. AA: OR = 1.37, 95% CI = 0.68-2.79, P = 0.380). Analysis of the IL-8 gene polymorphism revealed three genotypes: AA, TA, and TT. We found that TT genotype and T allele were significantly associated with sepsis risk in older adults (all p < 0.05). CONCLUSION The meta-analysis indicates no positive findings. However, the present experimental study has demonstrated that the IL-8 rs4073 polymorphism contributes increased risk to sepsis for older adults from Zhejiang Province, China. Future studies are urgently needed to confirm our conclusion.
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Affiliation(s)
- Tingting Han
- Department of Emergency and Critical Care Medicine, Changzheng Hospital, Second Military Medical University (Naval Medical University), Shanghai, China
| | - Tianyu Liang
- Emergency and Critical Care Center, Intensive Care Unit, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Renyang Liu
- Emergency and Critical Care Center, Intensive Care Unit, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Yinyin Quan
- Emergency and Critical Care Center, Intensive Care Unit, Department of Nursing, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China.
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Yu J, Varella Pereira GM, Allen-Brady K, Cuffolo R, Siddharth A, Koch M, Chua JWF, Sorrentino F, Dytko O, Ng KY, Violette P, Khullar V, Wang ZT, Cartwright R. Genetic polymorphisms associated with urinary tract infection in children and adults: a systematic review and meta-analysis. Am J Obstet Gynecol 2024; 230:600-609.e3. [PMID: 38128862 DOI: 10.1016/j.ajog.2023.12.018] [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: 08/22/2023] [Revised: 12/13/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023]
Abstract
INTRODUCTION The lifetime risk of urinary tract infection is known from first-degree relative studies to be highly heritable. Associations have also been observed across the life course from pediatric urinary tract infection to recurrent urinary tract infection in adulthood, suggesting lifelong susceptibility factors. Candidate gene studies and genome-wide association studies have tested for genetic associations of urinary tract infection; however, no contemporary systematic synthesis of studies is available. OBJECTIVE We conducted a systematic review to identify all genetic polymorphisms tested for an association with urinary tract infection in children and adults; and to assess their strength, consistency, and risk of bias among reported associations. DATA SOURCES AND STUDY ELIGIBILITY CRITERIA PubMed, HuGE Navigator and Embase were searched from January 1, 2005 to November 16, 2023, using a combination of genetic and phenotype key words. STUDY APPRAISAL AND SYNTHESIS METHODS Fixed and random effects meta-analyses were conducted using codominant models of inheritance in metan. The interim Venice criteria were used to assess their credibility of pooled associations. RESULTS After removing 451 duplicates, 1821 studies reports were screened, with 106 selected for full-text review, 22 were included in the meta-analysis (7 adult studies and 15 pediatric studies). Our meta-analyses demonstrated significant pooled associations for pediatric urinary tract infection with variation in CXCR1, IL8, TGF, TLR4 and VDR; all of which have plausible roles in the pathogenesis of urinary tract infection. Our meta-analyses also demonstrated a significant pooled association for adult urinary tract infection with variation in CXCR1. All significant pooled associations were graded according to their epidemiological credibility, sample sizes, heterogeneity between studies, and risk of bias. CONCLUSION This systematic review provides a current synthesis of the known genetic architecture of urinary tract infection in childhood and adulthood; and should provide important information for researchers analysing future genetic association studies. Although, overall, the credibility of pooled associations was weak, the consistency of findings for rs2234671 single nucleotide polymorphisms of CXCR1 in both populations suggest a key role in the urinary tract infection pathogenesis.
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Affiliation(s)
- Jiakun Yu
- University Hospitals Sussex NHS Foundation Trust, Brighton, United Kingdom.
| | - Glaucia Miranda Varella Pereira
- Department of Epidemiology and Biostatistics, Imperial College London, Norfolk Place, London, United Kingdom; Department of Urogynaecology, LNWH NHS Trust, London, United Kingdom; Department of Obstetrics and Gynaecology, School of Medical Sciences, University of Campinas, Brazil
| | - Kristina Allen-Brady
- Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT
| | - Romana Cuffolo
- Department of Obstetrics and Gynaecology, John Radcliffe Hospital, Oxford University Hospitals NHS Trust, Oxford, United Kingdom
| | - Aditi Siddharth
- John Radcliffe Hospital, Headley Way, Headington, Oxford, United Kingdom
| | - Marianne Koch
- Department of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
| | - John W F Chua
- Frimley Health NHS Foundation Trust, Frimley, United Kingdom
| | - Felice Sorrentino
- Department of Medical and Surgical Sciences, Institute of Obstetrics and Gynecology, University of Foggia, Foggia, Italy
| | - Oskar Dytko
- Imperial College School of Medicine, Imperial College London, London, United Kingdom
| | - Kaa-Yung Ng
- Imperial College School of Medicine, Imperial College London, London, United Kingdom
| | - Philippe Violette
- Department of Health Research Methods, Evidence and Impact (HEI) and Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Vik Khullar
- Department of Urogynaecology, Imperial College London, United Kingdom
| | - Zhan Tao Wang
- Department of Surgery, Division of Urology, University of Western Ontario, London, Ontario, Canada
| | - Rufus Cartwright
- Department of Epidemiology and Biostatistics, Imperial College London, Norfolk Place, London, United Kingdom; Department of Urogynaecology, LNWH NHS Trust, London, United Kingdom; Department of Urogynaecology, Chelsea and Westminster NHS Foundation Trust, London, United Kingdom
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Konda N, Chakrabarti S, Garg P, Willcox MDP. Association of Single-Nucleotide Polymorphisms in Interleukin Genes with Microbial Keratitis in a South Indian Population. Pathogens 2022; 11:1387. [PMID: 36422638 PMCID: PMC9692714 DOI: 10.3390/pathogens11111387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/12/2022] [Accepted: 11/19/2022] [Indexed: 05/03/2024] Open
Abstract
BACKGROUND To examine the relationship between single-nucleotide polymorphisms (SNPs) in interleukin (IL) genes and keratitis and its clinical manifestations. METHODS SNPs in IL1B, IL6, CXCL8, IL10, and IL12B were analysed. Differences in frequencies of alleles, genotypes and haplotypes between cases and controls as well as associations between SNPs and clinical variables were calculated by χ2 tests with odds ratios. RESULTS The minor homologous genotype in IL1B rs16944 (p = 0.036; odds ratio (OR) = 2.063, 95% confidence interval (CI): 1.048-4.061) and CXCL8 rs4073 (p = 0.041; OR = 0.463, 95% CI: 0.224-0.956) and the heterologous genotypes in IL6 rs1800795 (p = 0.046; OR = 0.563, 95% CI: 0.326-0.972) and IL12B rs2569254 (p = 0.0446; OR = 0.557, 95% CI: 0.314-0.989) or rs730691 (p = 0.0051; OR = 0.451, 95% CI: 0.260-0.784) were associated with keratitis. The minor genotype of rs16944 was associated with severe infection (p = 0.046). The heterologous genotype in rs2569254 was associated with hospital admission, photophobia, and mode of contact lens wear (p ≤ 0.041). The heterologous genotype in rs730691 was associated with blurred vision, discharge, anterior chamber reaction, and mode of wear (p ≤ 0.047). CONCLUSIONS This study demonstrates that SNPs in IL1B and CXCL8 are associated with risk of developing keratitis. The study also found relationships between SNPs and clinical measures of keratitis. The potential for ethnic differences in frequency of SNPs and their association with keratitis should be followed up using different populations.
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Affiliation(s)
- Nagaraju Konda
- School of Optometry and Vision Science, University of New South Wales, Sydney 2052, Australia
- Brien Holden Vision Institute, Sydney 2052, Australia
- School of Medical Sciences, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - Subhabrata Chakrabarti
- Brien Holden Eye Research Centre, L. V. Prasad Eye Institute, Hyderabad 500034, Telangana, India
| | - Prashant Garg
- The Cornea Institute, L. V. Prasad Eye Institute, Hyderabad, Telangana 500034, India
| | - Mark D. P. Willcox
- School of Optometry and Vision Science, University of New South Wales, Sydney 2052, Australia
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Zhao S, Gong J, Yin S, Li X, Zhao S, Mou T, Luo S. The association between interleukin-8 gene-251 A/T polymorphism and sepsis: A protocol for systematic review and meta analysis. Medicine (Baltimore) 2021; 100:e25483. [PMID: 33847655 PMCID: PMC8052005 DOI: 10.1097/md.0000000000025483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 03/19/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Emerging evidence has indicated that interleukin-8 (IL-8) gene-251A/T polymorphism may affect individual susceptibility to sepsis. However, the results of published studies are inconclusive. The aim of this meta-analysis was to elucidate the association between this polymorphism and the risk and mortality of sepsis. METHODS Relevant publications were searched from PubMed, EmBase, and Web of Science databases up to January 31, 2021, with studies only in English. The reference lists of the retrieved studies were investigated as well. Pooled odds ratio (OR) with 95% confidence interval (CI) was calculated to figure out the relationship between IL-8-251 A/T polymorphisms and the risk and mortality of sepsis. All of the data were analyzed with Stata 16.0. RESULTS The results of this meta-analysis will be submitted to a peer-reviewed journal for publication. CONCLUSION This meta-analysis will summarize the relationship between IL-8-251 A/T polymorphism and the risk and mortality of sepsis.
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Association of Genetic Polymorphisms and Serum Levels of IL-6 and IL-8 with the Prognosis in Children with Neuroblastoma. Cancers (Basel) 2021; 13:cancers13030529. [PMID: 33573284 PMCID: PMC7866803 DOI: 10.3390/cancers13030529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 01/21/2023] Open
Abstract
Simple Summary Neuroblastoma (NB) presents diverse biological and clinical characteristics, from spontaneous regression to highly malignant and aggressive unfavorable tumors that condition the therapeutic failure of conventional treatments. The tumorigenesis of NB can be the result of different genetic variants, which can influence the clinical outcome, and the survival of patients who have metastatic tumors is low. The role of cytokines such as interleukin (IL)-6 has been described in the NB microenvironment promoting tumor progression and metastasis. Single nucleotide polymorphism (SNP)-174 G > C in IL-6 and -251 T > A and +781 C > T in IL-8 regulate the expression of these cytokines, and could be associated with the clinical outcome in patients with NB. Our objective was to evaluate the association of the genetic polymorphisms of IL-6 and IL-8, as well as the serum levels of these cytokines in patients with NB, as this will allow the genetic bases of NB to be characterized and understood, in order to predict the outcome of the disease and develop new therapeutic strategies. Abstract There is evidence that high circulating levels of IL-6 and IL-8 are markers of a poor prognosis in various types of cancer, including NB. The participation of these cytokines in the tumor microenvironment has been described to promote progression and metastasis. Our objective was to evaluate the prognostic role of genetic polymorphisms and serum levels of IL-6 and IL-8 in a cohort of Mexican pediatric patients with NB. The detection of the SNPs rs1800795 IL-6 and rs4073 and rs2227306 IL-8 was carried out by PCR-RFLP and the levels of cytokines were determined by the ELISA method. We found elevated circulating levels of IL-8 and IL-6 in NB patients compared to the control group. The genotype frequencies of the rs1800795 IL-6 and rs4073 IL-8 variants were different between the patients with NB and the control group. Likewise, the survival analysis showed that the GG genotypes of rs1800795 IL-6 (p = 0.014) and AA genotypes of rs4073 IL-8 (p = 0.002), as well as high levels of IL-6 (p = 0.009) and IL-8 (p = 0.046), were associated with lower overall survival. We confirmed the impact on an adverse prognosis in a multivariate model. This study suggests that the SNPs rs1800795 IL-6 and rs4073 IL-8 and their serum levels could be promising biomarkers of a poor prognosis, associated with overall survival, metastasis, and a high risk in Mexican children with NB.
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Ambite I, Butler D, Wan MLY, Rosenblad T, Tran TH, Chao SM, Svanborg C. Molecular determinants of disease severity in urinary tract infection. Nat Rev Urol 2021; 18:468-486. [PMID: 34131331 PMCID: PMC8204302 DOI: 10.1038/s41585-021-00477-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2021] [Indexed: 02/06/2023]
Abstract
The most common and lethal bacterial pathogens have co-evolved with the host. Pathogens are the aggressors, and the host immune system is responsible for the defence. However, immune responses can also become destructive, and excessive innate immune activation is a major cause of infection-associated morbidity, exemplified by symptomatic urinary tract infections (UTIs), which are caused, in part, by excessive innate immune activation. Severe kidney infections (acute pyelonephritis) are a major cause of morbidity and mortality, and painful infections of the urinary bladder (acute cystitis) can become debilitating in susceptible patients. Disease severity is controlled at specific innate immune checkpoints, and a detailed understanding of their functions is crucial for strategies to counter microbial aggression with novel treatment and prevention measures. One approach is the use of bacterial molecules that reprogramme the innate immune system, accelerating or inhibiting disease processes. A very different outcome is asymptomatic bacteriuria, defined by low host immune responsiveness to bacteria with attenuated virulence. This observation provides the rationale for immunomodulation as a new therapeutic tool to deliberately modify host susceptibility, control the host response and avoid severe disease. The power of innate immunity as an arbitrator of health and disease is also highly relevant for emerging pathogens, including the current COVID-19 pandemic.
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Affiliation(s)
- Ines Ambite
- grid.4514.40000 0001 0930 2361Department of Microbiology, Immunology and Glycobiology, Institute of Laboratory Medicine, Lund University, Lund, Sweden
| | - Daniel Butler
- grid.4514.40000 0001 0930 2361Department of Microbiology, Immunology and Glycobiology, Institute of Laboratory Medicine, Lund University, Lund, Sweden
| | - Murphy Lam Yim Wan
- grid.4514.40000 0001 0930 2361Department of Microbiology, Immunology and Glycobiology, Institute of Laboratory Medicine, Lund University, Lund, Sweden
| | - Therese Rosenblad
- grid.4514.40000 0001 0930 2361Department of Microbiology, Immunology and Glycobiology, Institute of Laboratory Medicine, Lund University, Lund, Sweden
| | - Thi Hien Tran
- grid.4514.40000 0001 0930 2361Department of Microbiology, Immunology and Glycobiology, Institute of Laboratory Medicine, Lund University, Lund, Sweden
| | - Sing Ming Chao
- Nephrology Service, Department of Paediatrics, KK Hospital, Singapore, Singapore
| | - Catharina Svanborg
- grid.4514.40000 0001 0930 2361Department of Microbiology, Immunology and Glycobiology, Institute of Laboratory Medicine, Lund University, Lund, Sweden
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Fu P, Xie S, Zhang X. IL-8 gene locus is associated with risk, severity and 28-day mortality of sepsis in a Chinese population. Clin Exp Med 2019; 19:571-576. [DOI: 10.1007/s10238-019-00584-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 09/30/2019] [Indexed: 01/17/2023]
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Sinapidis D, Kosmas V, Vittoros V, Koutelidakis IM, Pantazi A, Stefos A, Katsaros KE, Akinosoglou K, Bristianou M, Toutouzas K, Chrisofos M, Giamarellos-Bourboulis EJ. Progression into sepsis: an individualized process varying by the interaction of comorbidities with the underlying infection. BMC Infect Dis 2018; 18:242. [PMID: 29843641 PMCID: PMC5975439 DOI: 10.1186/s12879-018-3156-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 05/21/2018] [Indexed: 11/21/2022] Open
Abstract
Background Development of sepsis is a process with significant variation among individuals. The precise elements of this variation need to be defined. This study was designed to define the way in which comorbidities contribute to sepsis development. Methods Three thousand five hundred nine patients with acute pyelonephritis (AP), community-acquired pneumonia (CAP), intraabdominal infections (IAI) or primary bacteremia (BSI) and at least two signs of the systemic inflammatory response syndrome were analyzed. The study primary endpoint was to define how comorbidities as expressed in the Charlson’s comorbidity index (CCI) and the underlying type of infection contribute to development of organ dysfunction. The precise comorbidities that mediate sepsis development and risk for death among 18 comorbidities recorded were the secondary study endpoints. Results CCI more than 2 had an odds ratio of 5.67 for sepsis progression in patients with IAI between significantly higher than AP and BSI. Forward logistic regression analysis indicated seven comorbidities that determine transition into sepsis in patients with AP, four comorbidities in CAP, six comorbidities in IAI and one in BSI. The odds ratio both for progression to sepsis and death with one comorbidity or with two and more comorbidities was greater than in the absence of comorbidities. Conclusions The study described how different kinds of infection vary in the degree to which they lead to sepsis. The number of comorbidities that enhances the risk of sepsis and death varies depending on the underlying infections. Electronic supplementary material The online version of this article (10.1186/s12879-018-3156-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dimitrios Sinapidis
- Department of Therapeutics, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Vassileios Kosmas
- 1st Department of Internal Medicine, "G.Gennimatas" Athens General Hospital, Athens, Greece
| | - Vasileios Vittoros
- 1st Department of Internal Medicine, Thriasio Elefsis General Hospital, Magoula, Greece
| | | | - Aikaterini Pantazi
- 2nd Department of Internal Medicine, Thriasio Elefsis General Hospital, Magoula, Greece
| | - Aggelos Stefos
- Department of Medicine and Research Laboratory of Internal Medicine, Larissa University Hospital, University of Thessaly, Medical School, Volos, Greece
| | | | | | | | - Konstantinos Toutouzas
- 1st Department of Propedeutic Surgery, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Michael Chrisofos
- 2nd Department of Urology, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Evangelos J Giamarellos-Bourboulis
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School, Athens, Greece. .,4th Department of Internal Medicine, ATTIKON University Hospital, 1 Rimini Street, 12462, Athens, Greece.
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Hussein A, Askar E, Badawy A, Saad K, Zahran A, Elderwy AA. Impact of cytokine genetic polymorphisms on the risk of renal parenchymal infection in children. J Pediatr Urol 2017; 13:593.e1-593.e10. [PMID: 28716390 DOI: 10.1016/j.jpurol.2017.05.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 05/24/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Acute pyelonephritis is associated with renal scarring in up to 30% of patients. Renal scarring may cause significant long-term morbidity. The pathogenesis of acute pyelonephritis remains unclear, although it involves interaction among uroepithelium, the immune system cells, and the locally produced cytokines. That some UTI-prone children develop acute pyelonephritis, and eventually renal parenchymal scarring, suggests a genetic role. Interleukin-6, interleukin-8, chemokine receptor-1 (CXCR1), and tumor necrosis factor-alpha (TNFα), the key regulators of the host immune responses, are proteins whose secretion is controlled by genes. We postulated that functional polymorphic variants of their genes might have a role in APN susceptibility. OBJECTIVES We sought to investigate a possible association of the common functional polymorphisms in genes encoding IL-6, IL-8, CXCR1, and TNFα with the risk of APN in children. METHODS Urine culture was used to diagnose 300 children with UTI, of mean age of 51.31 ± 37.4 months (2-180 months). 99Tc-DMSA scans diagnosed 86 children with APN. Follow-up scans identified new renal scars in 18 children. Six functional single-nucleotide polymorphisms (SNPs) in genes encoding IL-6, IL-8, CXCR1, and TNFα were genotyped in all subjects (IL-6 rs1800795 (-174G/C), IL-6 rs1800796 (-572G/C), IL-8 rs2227306 (781C/T), IL8 rs4073 (-251A/T), CXCR1 rs2234671 (2607G/C), and TNFα rs1800629 (-308G/A)). RESULTS TT genotype of IL-8 -251A/T polymorphism was significantly higher in APN patients (26.7%) than those with lower UTI (11.7%, p = 0.01) and control individuals (12.2%, p = 0.002). T allele was significantly more common in APN than in lower UTI (p = 0.025) and was significantly more common in APN (46%) than in the controls (p = 0.001). Similarly, TT genotype of IL-8 781C/T polymorphism was significantly more common in APN patients (31.4%) than those with lower UTI (17.3%, p = 0.003) and the controls (14.3%, p = 0.001). T allele was significantly more common in APN (55%) than lower UTI (40%, p = 0.005) and controls (37%, p = 0.001). However, IL-8 -251A/T and +781C/T SNPs did not qualify as an independent risk for parenchymal infection (OR 1.9, 95% CI 0.68-2.6, p = 0.13 and OR 2.3, 95% CI 0.89-3.7, p = 0.091, respectively). Lower UTI did not differ from the controls. The frequency of the genotypes and alleles of IL-6, CXCR1, and TNFα SNPs did not differ significantly among the different groups of the study. CONCLUSION IL-8 -251A/T and +781C/T SNPs are associated with susceptibility to renal parenchymal infection in children and could be implicated in APN risk. However, none of these variants could clearly and independently predict this risk.
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Affiliation(s)
- Almontaser Hussein
- Pediatric Nephrology, Children's Hospital, Assiut University, Egypt; Genetic Unit, Children's Hospital, Assiut University, Egypt.
| | - Eman Askar
- Children's Hospital, Assiut University, Egypt
| | - Ahlam Badawy
- Pediatric Nephrology, Children's Hospital, Assiut University, Egypt
| | - Khaled Saad
- Children's Hospital, Assiut University, Egypt
| | - Asmaa Zahran
- Clinical Pathology, SECI, Assiut University, Egypt
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Smelaya TV, Belopolskaya OB, Smirnova SV, Kuzovlev AN, Moroz VV, Golubev AM, Pabalan NA, Salnikova LE. Genetic dissection of host immune response in pneumonia development and progression. Sci Rep 2016; 6:35021. [PMID: 27725770 PMCID: PMC5057148 DOI: 10.1038/srep35021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 09/20/2016] [Indexed: 01/21/2023] Open
Abstract
The role of host genetic variation in pneumonia development and outcome is poorly understood. We studied common polymorphisms in the genes of proinflammatory cytokines (IL6 rs1800795, IL8 rs4073, IL1B rs16944), anti-inflammatory cytokines (IL10 rs1800896, IL4 rs2243250, IL13 rs20541) and toll-like receptors (TLR2 rs5743708 and rs4696480, TLR4 rs4986791, TLR9 rs352139, rs5743836 and rs187084) in patients with community-acquired pneumonia (CAP) (390 cases, 203 controls) and nosocomial pneumonia (355 cases, 216 controls). Experimental data were included in a series of 11 meta-analyses and eight subset analyses related to pneumonia susceptibility and outcome. TLR2 rs5743708 minor genotype appeared to be associated with CAP/Legionnaires’ disease/pneumococcal disease. In CAP patients, the IL6 rs1800795-C allele was associated with severe sepsis/septic shock/severe systemic inflammatory response, while the IL10 rs1800896-A allele protected against the development of these critical conditions. To contribute to deciphering of the above results, we performed an in silico analysis and a qualitative synthesis of literature data addressing basal and stimulated genotype-specific expression level. This data together with database information on transcription factors’ affinity changes caused by SNPs in putative promoter regions, the results of linkage disequilibrium analysis along with SNPs functional annotations supported assumptions about the complexity underlying the revealed associations.
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Affiliation(s)
- Tamara V Smelaya
- V. A. Negovsky Research Institute of General Reanimatology, Russian Academy of Sciences, 25 Petrovka str., build.2, Moscow 107031, Russia
| | - Olesya B Belopolskaya
- N.I. Vavilov Institute of General Genetics, Russian Academy of Sciences, 3 Gubkin street, Moscow 117971, Russia
| | - Svetlana V Smirnova
- N.I. Vavilov Institute of General Genetics, Russian Academy of Sciences, 3 Gubkin street, Moscow 117971, Russia
| | - Artem N Kuzovlev
- V. A. Negovsky Research Institute of General Reanimatology, Russian Academy of Sciences, 25 Petrovka str., build.2, Moscow 107031, Russia
| | - Viktor V Moroz
- V. A. Negovsky Research Institute of General Reanimatology, Russian Academy of Sciences, 25 Petrovka str., build.2, Moscow 107031, Russia
| | - Arkadiy M Golubev
- V. A. Negovsky Research Institute of General Reanimatology, Russian Academy of Sciences, 25 Petrovka str., build.2, Moscow 107031, Russia
| | - Noel A Pabalan
- Center for Research and Development, Angeles University Foundation, Angeles City 2009, Philippines
| | - Lyubov E Salnikova
- V. A. Negovsky Research Institute of General Reanimatology, Russian Academy of Sciences, 25 Petrovka str., build.2, Moscow 107031, Russia.,N.I. Vavilov Institute of General Genetics, Russian Academy of Sciences, 3 Gubkin street, Moscow 117971, Russia
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Uhle F, Chousterman BG, Grützmann R, Brenner T, Weber GF. Pathogenic, immunologic, and clinical aspects of sepsis - update 2016. Expert Rev Anti Infect Ther 2016; 14:917-27. [PMID: 27530423 DOI: 10.1080/14787210.2016.1224971] [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] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Sepsis is a major cause of death worldwide but its orchestrating components remain incompletely understood. On the one hand, development of sepsis results from an infectious focus that cannot be controlled by the immune system, but on the other, responding immune cells that can eliminate the infection inflict damage to the host by contributing to complications such as endothelial leakage, septic shock, and multiorgan failure. AREAS COVERED In this review we give a comprehensive overview of how sepsis occurs, which exogenous and endogenous factors might affect the immune-pathophysiological course of sepsis and finally how this knowledge translates into up-to-date definitions and therapeutic approaches. Expert commentary: Although new immunological mechanisms altering the course of sepsis have been identified recently, future research needs to address the limitations of experimental approaches, redirect the research focus into translational approaches, and finally evaluate personalized treatment strategies.
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Affiliation(s)
- Florian Uhle
- a Department of Anesthesiology , Heidelberg University Hospital , Heidelberg , Germany
| | - Benjamin G Chousterman
- b Department of Anesthesia, Intensive Care and SAMU , Hôpital Lariboisière, AP-HP, and Université Paris Diderot , Paris , France
| | - Robert Grützmann
- c Department of Surgery , University Hospital Erlangen-Nürnberg , Erlangen , Germany
| | - Thorsten Brenner
- a Department of Anesthesiology , Heidelberg University Hospital , Heidelberg , Germany
| | - Georg F Weber
- c Department of Surgery , University Hospital Erlangen-Nürnberg , Erlangen , Germany
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