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Cellular Immuno-Profile in Septic Human Host: A Scoping Review. BIOLOGY 2022; 11:biology11111626. [PMID: 36358327 PMCID: PMC9687154 DOI: 10.3390/biology11111626] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/01/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022]
Abstract
Simple Summary Septic shock is a life-threatening disease caused by a dysregulated host response to infection, affecting millions of people every year and killing more than 25% directly despite advances in modern medicine. This pathology is characterized by apoptosis-induced depletion of immune cells and immunodepression. Many alterations in the expression of surface markers of neutrophils and monocytes have been described in septic patients. There is no specific treatment but the early identification and diagnosis of the pathology as well as timely treatment can greatly improve patient outcomes. The aim of this study was to inspect the recently published literature to inform the clinician about the most up-to-date techniques for the study of immune cell phenotypes and on the function of leukocytes of extracorporeal and non-blood purification treatments proposed for sepsis were also analyzed. The most important alteration observed in septic neutrophils is the activation of a survival program capable of resisting apoptotic death. As regards adaptive immunity, sepsis-induced apoptosis leads to lymphopenia in patients with septic shock and this process involves all types of T cells (CD4, CD8 and Natural Killer), except for regulatory T cells, favoring immunosuppression. Several promising therapies that target the host’s immune response to sepsis are currently under evaluation. Abstract Innate and adaptive immune system cells play a critical role in the host response to sepsis. Sepsis is a life-threatening disease characterized by apoptosis-induced depletion of immune cells and immunodepression, which contribute to morbidity and mortality. Many alterations in the expression of surface markers of neutrophils and monocytes have been described in septic patients. The aim of this study was to inspect the recently published literature to inform the clinician about the most up-to-date techniques for the study of circulating leukocytes. The impact on cell phenotypes and on the function of leukocytes of extracorporeal and non-blood purification treatments proposed for sepsis were also analyzed. We conducted a systematic review using Pubmed/Medline, Ovid/Willey, the Cochrane Library, the Cochrane Controlled Trials Register, and EMBASE, combining key terms related to immunological function in sepsis and selected the most relevant clinical trials and review articles (excluding case reports) published in the last 50 years. The most important alteration in neutrophils during sepsis is that they activate an anti-apoptotic survival program. In septic monocytes, a reduced characteristic expression of HLA-DR is observed, but their role does not seem to be significantly altered in sepsis. As regards adaptive immunity, sepsis leads to lymphopenia and immunosuppression in patients with septic shock; this process involves all types of T cells (CD4, CD8 and Natural Killer), except for regulatory T cells, which retain their function. Several promising therapies that target the host immune response are currently under evaluation. During the worldwide pandemic caused by SARS-CoV-2, it was useful to study the “cytokine storm” to find additional treatments, such as the oXiris® filter. This therapy can decrease the concentration of inflammatory markers that affect the severity of the disease.
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Afdal A, Jamsari J, Yanwirasti Y, Rukmono P. Relationship of Bactericidal Permeability Increasing Protein (BPI) Polymorphysm rs1341023, rs5743507, Tumor Necrosis Factor Alpha (TNF-α) rs361525, rs1800629 with Neonatal Sepsis. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.9762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background: Neonatal sepsis is a problem in the field of child health because the incidence is increasing every year and often ends in death. This study aimed to investigate the relationship between TNF-α and BPI gene polymorphisms with neonatal sepsis.
Methods: PCR and sequencing examinations were performed on 60 DNA samples consisting of 30 samples of neonatal sepsis and 30 samples of non-neoptic sepsis. Furthermore, data in the form of DNA mutation tables were statistically processed by univariate, bivariate, and multivariate analysis. It is considered meaningful if p<0.05.
Result: The results showed that BPI rs1341023, rs5743507 and TNF-α rs361525, rs1800629 only BPI rs1341023 and TNF-α rs1800629 were mutated. Of the two genes, only TNF-α rs1800629 had a significant association with neonatal sepsis (p<0.05).
Conclusion: This study proved that the TNF-α rs1800629 mutation was the most important polymorphism in the occurrence of neonatal sepsis (p<0.05).
Keywords: BPI, TNF-α, Neonatal, Polymorphism, Sepsis
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Hugo Montes A, Valle-Garay E, Martin G, Collazos J, Alvarez V, Meana A, Pérez-Is L, Carton JA, Taboada F, Asensi V. The TNF-α ( -238 G/A) polymorphism could protect against development of severe sepsis. Innate Immun 2021; 27:409-420. [PMID: 34472396 PMCID: PMC8419297 DOI: 10.1177/17534259211036186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 07/13/2021] [Indexed: 12/15/2022] Open
Abstract
Primary responses in sepsis-mediated inflammation are regulated by pro-inflammatory cytokines. Variations in the cytokine genes might modify their transcription or expression, plasma cytokines levels and response to sepsis. Activation protein-1 (AP-1) and NF-κB regulate cytokines gene expression in sepsis. A total of 90 severely septic and 91 non-infected patients were prospectively studied. IL-1α (-889 C/T), IL-1β (+3954 C/T), IL-6 (-174 G/C), TNF-α (-238 G/A), TNF-α (-308G/A), IL-8 (-251A/T) and IL-10 (-1082 G/A) SNPs, plasma IL-1β, IL-4, IL-6, IL-8, IL-10, IL-13, IFN-γ, TNF-α and monocyte chemoattractant protein 1 (MCP-1) levels, and AP-1 and NF-κB gene expression by neutrophils were assessed. A allele carriers of TNF-α (-238 G/A) SNP were less frequent among septic patients. IL-6, IL-8, IL-10, TNF-α and MCP-1 levels were higher, and AP-1 and NF-κB gene expressions lower in septic patients. Sepsis was independently associated with higher fibrinogen, neutrophils counts and IL-8 levels, lower prothrombin, absence of the variant A allele of the TNF-α (-238 G/A) SNP, and haemodynamic failure. Death was independently associated with a higher APACHE II score, higher IL-8 levels, and the diagnosis of sepsis. TNF-a (-238 G/A) SNP could protect against sepsis development. Higher IL-8 levels are predictive of sepsis and mortality.
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Affiliation(s)
- A. Hugo Montes
- Biochemistry and Molecular Biology, Oviedo University School of Medicine, Spain
- Group of Translational Research in Infectious Diseases, Instituto de investigación Sanitaria del Principado de Asturias (ISPA), Spain
| | - Eulalia Valle-Garay
- Biochemistry and Molecular Biology, Oviedo University School of Medicine, Spain
- Group of Translational Research in Infectious Diseases, Instituto de investigación Sanitaria del Principado de Asturias (ISPA), Spain
| | - Guadalupe Martin
- Critical Care, Hospital Universitario Central de Asturias (HUCA), Spain
| | | | - Victoria Alvarez
- Molecular Genetics Unit-Nephrology Research Institute, Hospital Universitario Central de Asturias (HUCA), Spain
| | - Alvaro Meana
- Community Centre for Blood and Tissues of Asturias, CIBERER U714, Spain
| | - Laura Pérez-Is
- Biochemistry and Molecular Biology, Oviedo University School of Medicine, Spain
- Group of Translational Research in Infectious Diseases, Instituto de investigación Sanitaria del Principado de Asturias (ISPA), Spain
| | - José A. Carton
- Group of Translational Research in Infectious Diseases, Instituto de investigación Sanitaria del Principado de Asturias (ISPA), Spain
- Infectious Diseases Unit, Hospital Universitario Central de Asturias (HUCA), Oviedo University School of Medicine, Spain
| | - Francisco Taboada
- Critical Care, Hospital Universitario Central de Asturias (HUCA), Spain
| | - Víctor Asensi
- Group of Translational Research in Infectious Diseases, Instituto de investigación Sanitaria del Principado de Asturias (ISPA), Spain
- Infectious Diseases Unit, Hospital Universitario Central de Asturias (HUCA), Oviedo University School of Medicine, Spain
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Association between the Lymphotoxin- α A252g Gene Polymorphism and the Risk of Sepsis and Mortality: A Meta-Analysis. BIOMED RESEARCH INTERNATIONAL 2021; 2020:7936434. [PMID: 32884945 PMCID: PMC7455838 DOI: 10.1155/2020/7936434] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/20/2020] [Accepted: 07/29/2020] [Indexed: 11/24/2022]
Abstract
Background The association between the lymphotoxin-α (LTA) A252G polymorphism and sepsis risk has been extensively studied, but the results have been controversial. This study is aimed at investigating the overall association between the LTA A252G polymorphism and the risk of sepsis/septic shock and sepsis-related mortality. Methods We searched the PubMed and EMBASE databases to identify studies that investigated the association between the LTA A252G polymorphism and risks of sepsis, septic shock, and mortality. The relevant data were extracted, and statistical analyses were performed using the Revman 5.0 and STATA 12 software. Results A total of 32 publications were included in the meta-analysis. The results demonstrated that the LTA A252G polymorphism showed no significant association with sepsis risk (GG+GA vs. AA: OR = 0.92, 95%CI = 0.79–1.07, p = 0.27) or with sepsis shock risk (GG+GA vs. AA: OR = 1.01, 95%CI = 0.84–1.22, p = 0.91). However, in the subgroup analyzed by ethnicity, the LTA A252G polymorphism significantly decreased sepsis risk in the Asian population for the recessive model [GG vs. GA+AA: OR = 0.82, 95%CI = 0.68–0.99, p = 0.04] but not in the Caucasian population. Moreover, comparisons between sepsis patients who survived and those who did not suggested that the LTA A252G polymorphism decreases the risk of mortality [GG+GA vs. AA: OR = 0.57, 95%CI = 0.41–0.80, p < 0.01]. Conclusion Our results suggested that the A252G polymorphism in the LTA gene decreased the risk of sepsis in Asians and may reduce mortality in septic individuals.
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Yu Y, Guo H, Jiang W, Zhang C, Xing C, Chen D, Xu C, Su L. Cyclic GMP-AMP promotes the acute phase response and protects against Escherichia coli infection in mice. Biochem Pharmacol 2021; 188:114541. [PMID: 33812857 DOI: 10.1016/j.bcp.2021.114541] [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: 12/27/2020] [Revised: 03/28/2021] [Accepted: 03/29/2021] [Indexed: 11/25/2022]
Abstract
The acute phase response, as a component of the innate immune system, is part of the first line of defense against invading pathogens. The Stimulator of Interferon Genes (STING) pathway initiates innate immune responses upon recognition of exogenous bacterial and viral DNA. However, whether STING signaling pathway plays any roles in regulating acute phase response during bacterial infection remains unknown. In this study, we used STING-deficient (Tmem173gt) and wildtype mice to investigate acute phase responses to bacterial infection (Escherichia coli, E. coli) and test the effect of exogenous cyclic GMP-AMP (cGAMP, a STING agonist) treatment. Bacterial infection of STING-deficient mice resulted in an increase in mortality and bacterial dissemination. Also, inflammation-induced acute phase response was drastically reduced in STING-deficient mice, showing significant reduction in expression of cytokine TNF-α and acute phase proteins. In contrast, exogenous cGAMP treatment enhanced inflammation-induced acute phase response by increasing the expression of TNF-α and acute phase proteins. Also, cGAMP accelerated bacterial clearance and improved survival rate of wildtype mice, but not STING-deficient mice. Interestingly, cGAMP treatment mitigated bacterial infection induced liver injury in both wildtype and STING-deficient mice. Further in vitro evidence showed that cGAMP treatment retarded TNF-α-mediated hepatocyte apoptosis, potentially accelerating autophagy. Taken together, our results indicated that cGAMP/STING signaling pathway is critical for organism to initiate blood-borne innate immune-responses to defend bacterial infection, and cGAMP is envisaged as a drug candidate for further clinical trial.
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Affiliation(s)
- Yongsheng Yu
- School of Medicine, Shanghai University, Shanghai, China
| | - Huan Guo
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Wenli Jiang
- Department of Biochemistry and Molecular Biology, The Faculty of Basic Medical Science, Second Military Medical University, Shanghai, China
| | - Chenxi Zhang
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Chunlei Xing
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Dagui Chen
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Can Xu
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai, China.
| | - Li Su
- Institute of Translational Medicine, Shanghai University, Shanghai, China.
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Özkan M, Günay N, Sener EF, Karcıoglu Ö, Tahtasakal R, Dal F, Günay NE, Demiryürek AT. Variants in TNF and NOS3 (eNOS) genes associated with sepsis in adult patients. J Gene Med 2021; 23:e3323. [PMID: 33609421 DOI: 10.1002/jgm.3323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 01/23/2021] [Accepted: 02/14/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Sepsis is a life-threatening condition caused by a dysregulated host response to infections and is a leading cause of death in hospitalized patients. The present study aimed to elucidate the possible association between sepsis and the tumor necrosis factor (TNF) gene -308G/A (rs1800629) polymorphism, as well as endothelial nitric oxide synthase (eNOS, NOS3) gene -786T/C (rs2070744), 4a/4b (27 bp-VNTR in intron 4, rs61722009) and 894G/T (Glu298Asp, rs1799983) polymorphisms. METHODS In total, 188 septic adult cases and 188 healthy controls were enrolled. Genomic DNAs from the controls and patients were analyzed by polymerase chain reaction and restriction fragment length polymorphism methods. RESULTS There were significant associations between the G/G genotype and G allele of the TNF -308G/A (rs1800629) polymorphism in the sepsis group (p < 0.001). The presence of the T/C genotype (p = 0.002) and C allele (p = 0.001) of the -786T/C (rs2070744) was markedly associated with an increased risk of sepsis. However, no significant associations were found with 4a/4b (27 bp-VNTR in intron 4, rs61722009) and 894G/T (Glu298Asp, rs1799983) polymorphisms. Higher 4bGC and lower 4bTT haplotype frequencies were associated with sepsis. CONCLUSIONS Our results strongly suggest that TNF gene (-308G/A, rs1800629) and NOS3 gene -786T/C (rs2070744) polymorphisms may modify individual susceptibility to sepsis in the Turkish population.
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Affiliation(s)
- Mustafa Özkan
- Department of Emergency Medicine, Medical School, Erciyes University, Kayseri, Turkey
| | - Nurullah Günay
- Department of Emergency Medicine, Medical School, Erciyes University, Kayseri, Turkey
| | - Elif Funda Sener
- Department of Medical Biology, Medical School, Erciyes University, Genome and Stem Cell Center, Kayseri, Turkey
| | - Özgür Karcıoglu
- Department of Emergency Medicine, University of Health Sciences, Istanbul Education and Research Hospital, Istanbul, Turkey
| | - Reyhan Tahtasakal
- Department of Medical Biology, Medical School, Erciyes University, Genome and Stem Cell Center, Kayseri, Turkey
| | - Fatma Dal
- Genome and Stem Cell Center of Erciyes University, Kayseri, Turkey
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Georgescu AM, Banescu C, Azamfirei R, Hutanu A, Moldovan V, Badea I, Voidazan S, Dobreanu M, Chirtes IR, Azamfirei L. Evaluation of TNF-α genetic polymorphisms as predictors for sepsis susceptibility and progression. BMC Infect Dis 2020; 20:221. [PMID: 32171247 PMCID: PMC7071754 DOI: 10.1186/s12879-020-4910-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/19/2020] [Indexed: 12/12/2022] Open
Abstract
Background The goal of the study was to evaluate a potential role for tumor necrosis factor alpha (TNF-α) genetic variability as biomarker in sepsis. In particular, we aimed to determine if single nucleotide polymorphisms (SNPs) of TNF-α gene are associated with sepsis in terms of risk, severity and outcome. Methods We performed a prospective study on 163 adult critically ill septic patients (septic shock 65, sepsis 98, further divided in 40 survivors and 123 deceased) and 232 healthy controls. Genotyping of TNF-α SNPs (-308G/A, -238G/A, -376G/A and +489G/A) was performed for all patients and controls and plasma cytokine levels were measured during the first 24 h after sepsis onset. Results TNF-α +489G/A A-allele carriage was associated with significantly lower risk of developing sepsis and sepsis shock (AA+AG vs GG: OR = 0.53; p = 0.004; 95% CI = 0.34–0.82 and OR = 0.39; p = 0.003; 95% CI = 0.21–0.74, respectively) but not with sepsis-related outcomes. There was no significant association between any of the other TNF-α promoter SNPs, or their haplotype frequencies and sepsis or septic shock risk. Circulating TNF-α levels were higher in septic shock; they were not correlated with SNP genotype distribution; GG homozygosity for each polymorphism was correlated with higher TNF-α levels in septic shock. Conclusions TNF-α +489G/A SNP A-allele carriage may confer protection against sepsis and septic shock development but apparently does not influence sepsis-related mortality. Promoter TNF-α SNPs did not affect transcription and were not associated with distinct sepsis, septic shock risk or outcomes.
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Affiliation(s)
- Anca Meda Georgescu
- Infectious Diseases Clinic, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 38 Gh. Marinescu St, 540139, Targu Mures, Romania
| | - Claudia Banescu
- Genetics Laboratory, Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 38 Gh. Marinescu St, 540139, Targu Mures, Romania.
| | - Razvan Azamfirei
- Johns Hopkins School of Medicine, Johns Hopkins University, 733 N Broadway, Baltimore, MD, 21202, USA
| | - Adina Hutanu
- Immunology Laboratory, Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 38 Gh. Marinescu St, 540139, Targu Mures, Romania
| | - Valeriu Moldovan
- Genetics Laboratory, Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 38 Gh. Marinescu St, 540139, Targu Mures, Romania
| | - Iudita Badea
- Department of Anesthesiology and Intensive Care, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 38 Gh. Marinescu St, 540139, Targu Mures, Romania
| | - Septimiu Voidazan
- Department of Epidemiology, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 38 Gh. Marinescu St, 540139, Targu Mures, Romania
| | - Minodora Dobreanu
- Immunology Laboratory, Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 38 Gh. Marinescu St, 540139, Targu Mures, Romania
| | - Ioana Raluca Chirtes
- Infectious Diseases Clinic, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 38 Gh. Marinescu St, 540139, Targu Mures, Romania
| | - Leonard Azamfirei
- Department of Anesthesiology and Intensive Care, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, 38 Gh. Marinescu St, 540139, Targu Mures, Romania
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Chen TH, Huang JJ, Kung WS, Lee SS, Sun HY, Chuang HY. The Association of Serum TNF-α Levels and Blood Multi-Elements Modified by TNF-α Gene Polymorphisms in Metal Industrial Workers. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16214079. [PMID: 31652851 PMCID: PMC6862333 DOI: 10.3390/ijerph16214079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 12/27/2022]
Abstract
Health of the metal industrial workers should be a noteworthy issue due to the hazard of chronic exposure to metals or toxic elements. The interactions among multiple elements are sophisticated and may differ from person to person. Tumor necrosis factor-α (TNF-α) gene polymorphisms were supposed to be involved with the interactions because TNF-α plays an important role in inflammation, a mechanism by which toxic elements cause threats to human health. This research aimed to analyze the influence of TNF-α gene polymorphisms and multi-elements on serum TNF-α level. Blood multi-elements concentrations (lead, cadmium, arsenic, selenium, cobalt, copper, and zinc), serum TNF-α level, and TNF-α single nucleotide polymorphisms (SNPs), including −238G > A (rs361525), −308G > A (rs1800629), −857C > T (rs1799724), −863C > A (rs1800630), and −1031T > C (rs1799964), were measured in 462 metal industrial workers. We applied mixed-effect models to analyze the interactions among multi-elements and TNF-α SNPs. Blood concentration of all elements were positively associated with serum TNF-α level, and the effects may be modified by TNF-α gene polymorphisms. Our study revealed that TNF-α −308A/A and −1031C/C may be susceptible genotypes, and thus we suggest that those workers should take preventive measures against metal toxicity.
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Affiliation(s)
- Tzu-Hua Chen
- Department of Public Health, College of Health Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Department of Family Medicine, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan.
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan .
| | - Joh-Jong Huang
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan .
| | - Wei-Shyang Kung
- Department of Pediatrics, National Cheng Kung University Hospital, Tainan 70101, Taiwan.
| | - Su-Shin Lee
- Center for Stem Cell Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Hung-Yu Sun
- Department of Family Medicine, Changhua Christian Hospital, Changhua 50006, Taiwan.
| | - Hung-Yi Chuang
- Department of Public Health, College of Health Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Department of Environmental and Occupational Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
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Bruse N, Leijte GP, Pickkers P, Kox M. New frontiers in precision medicine for sepsis-induced immunoparalysis. Expert Rev Clin Immunol 2019; 15:251-263. [PMID: 30572728 DOI: 10.1080/1744666x.2019.1562336] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION In the last decade, the sepsis research field has shifted focus from targeting hyperinflammation to reversing sepsis-induced immunoparalysis. Sepsis-induced immunoparalysis is very heterogeneous: the magnitude and the nature of the underlying immune defects differ considerably between patients, but also within individuals over time. Therefore, a 'one-treatment-fits-all' strategy for sepsis-induced immunoparalysis is bound to fail, and an individualized 'precision medicine' approach is required. Such a strategy is nevertheless hampered by the unsuitability of the currently available markers to identify the many immune defects that can manifest in individual patients. Areas covered: We describe the currently available markers for sepsis-induced immunoparalysis and limitations pertaining to their use. Furthermore, future prospects and caveats are discussed, focusing on 'omics' approaches: genomics, transcriptomics, epigenomics, and metabolomics. Finally, we present a contemporary overview of adjuvant immunostimulatory therapies. Expert opinion: The integration of multiple omics techniques offers a systems biology approach which can yield biomarker profiles that accurately and comprehensively gauge the extent and nature of sepsis-induced immunoparalysis. We expect this development to be instrumental in facilitating precision medicine for sepsis-induced immunoparalysis, consisting of the application of targeted immunostimulatory therapies and follow-up measurements to monitor the response to treatment and to titrate or adjust medication.
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Affiliation(s)
- Niklas Bruse
- a Department of Intensive Care Medicine , Radboud University Medical Center , Nijmegen , The Netherlands.,b Radboud Center for Infectious Diseases , Radboud University Medical Center , Nijmegen , The Netherlands
| | - Guus P Leijte
- a Department of Intensive Care Medicine , Radboud University Medical Center , Nijmegen , The Netherlands.,b Radboud Center for Infectious Diseases , Radboud University Medical Center , Nijmegen , The Netherlands
| | - Peter Pickkers
- a Department of Intensive Care Medicine , Radboud University Medical Center , Nijmegen , The Netherlands.,b Radboud Center for Infectious Diseases , Radboud University Medical Center , Nijmegen , The Netherlands
| | - Matthijs Kox
- a Department of Intensive Care Medicine , Radboud University Medical Center , Nijmegen , The Netherlands.,b Radboud Center for Infectious Diseases , Radboud University Medical Center , Nijmegen , The Netherlands
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10
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Hou Y, Bai L, Jiang N, Yao Z, Xue L, Yu B. Screening of TNF-α gene polymorphisms in patients with extremity chronic osteomyelitis in China. Per Med 2018; 15:395-401. [PMID: 30259788 DOI: 10.2217/pme-2018-0017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AIM This study aims to investigate the link between TNF-α gene SNPs and patients with extremity chronic osteomyelitis in China. METHODOLOGY Our study included 433 subjects, composed of 233 extremity chronic osteomyelitis patients and 200 controls. Six single-nucleotide polymorphisms (rs1799964, rs1800630, rs1799724, rs1800750, rs1800629 and rs361525) in TNF-α gene were detected by the SNaPshot genotyping method. RESULTS Significant genotype distribution of rs1799964 was identified between patients and healthy controls (p = 0.045). In addition, statistical difference was found between rs1799964 SNP and the susceptibility to extremity chronic osteomyelitis (p = 0.044). CONCLUSION We reported for the first time that TNF-α gene SNP rs1799964 contributes to the elevated venture of extremity chronic osteomyelitis in China.
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Affiliation(s)
- Yilong Hou
- Guangdong Provincial Key Laboratory of Bone & Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Lang Bai
- Guangdong Provincial Key Laboratory of Bone & Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Nan Jiang
- Guangdong Provincial Key Laboratory of Bone & Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, PR China.,Department of Orthopaedics & Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Zilong Yao
- Guangdong Provincial Key Laboratory of Bone & Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Li Xue
- 8th Department of Orthopaedics, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, PR China
| | - Bin Yu
- Guangdong Provincial Key Laboratory of Bone & Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, PR China.,Department of Orthopaedics & Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
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11
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Zhang Y, Cui X, Ning L, Wei D. The effects of tumor necrosis factor-α (TNF-α) rs1800629 and rs361525 polymorphisms on sepsis risk. Oncotarget 2017; 8:111456-111469. [PMID: 29340067 PMCID: PMC5762335 DOI: 10.18632/oncotarget.22824] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 11/13/2017] [Indexed: 01/20/2023] Open
Abstract
This meta-analysis of 23 eligible articles comprehensively and quantitatively evaluated the effects of tumor necrosis factor-α (TNF-α) rs1800629 and rs361525 polymorphisms on sepsis risk. We found that TNF-α rs1800629 was associated with increased sepsis risk in the overall population in four genetic models, including A vs. G (P<0.001, odds ratio (OR)=1.32), GA vs. GG (P<0.001, OR=1.46), GA+AA vs. GG (P<0.001, OR=1.46), and carrier A vs. carrier G (P<0.001, OR=1.32). Subgroup analyses showed a similar result for Asian patients (all P<0.05, OR>1). TNF-α rs361525 was also associated with increased sepsis risk in Asian patients in the four genetic models (all P<0.05, OR>1). Begg's and Egger's tests excluded large publication bias, and sensitivity analysis indicated stable results. Our results suggest that the G/A genotype of TNF-α rs1800629 and rs361525 increases sepsis risk in an Asian population.
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Affiliation(s)
- Yixin Zhang
- Department of Clinical Laboratory, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China.,School of Medical Laboratory, Tianjin Medical University, Tianjin 300070, PR China
| | - Xiaoteng Cui
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, PR China
| | - Li Ning
- Department of Clinical Laboratory, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China
| | - Dianjun Wei
- Department of Clinical Laboratory, The Second Hospital of Tianjin Medical University, Tianjin 300211, PR China
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12
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Tumor necrosis factor-α -308 G/A polymorphism and risk of sepsis, septic shock, and mortality: an updated meta-analysis. Oncotarget 2017; 8:94910-94919. [PMID: 29212277 PMCID: PMC5706923 DOI: 10.18632/oncotarget.20862] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 08/27/2017] [Indexed: 02/05/2023] Open
Abstract
Background The -308G/A polymorphism in the gene encoding tumor necrosis factor-α (TNF-α) has been implicated in sepsis risk in many studies but with variable results. This study aimed to comprehensively assess the evidence of association between this polymorphism and risk of sepsis and sepsis-related mortality. Materials and Methods PubMed, EMBASE and other databases were searched to identify relevant studies, and data were analyzed using Review Manager 5.0 and STATA 12.0. Results Data from 34 publications involving 12,284 subjects were meta-analyzed. Combined analysis revealed an association between TNF-α -308G/A gene polymorphism and risk of sepsis (AA+GA vs. GG, OR 1.35, 95% CI 1.10–1.67, P = 0.005). This association was observed in the Caucasian subgroup (OR 1.50, 95% CI 1.13–2.00, P = 0.006), but not in the Asian subgroup. Across the entire study population, the polymorphism was also significantly related to septic shock risk (OR 1.52, 95% CI 1.18–1.95, P = 0.001) but not to sepsis-related mortality (OR 0.99, 95% CI 0.71–1.40, P = 0.97). Conclusions This meta-analysis suggests that the -308G/A gene polymorphism in the TNF-α gene may contribute to risk of sepsis and septic shock, but not risk of mortality.
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13
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Acar L, Atalan N, Karagedik EH, Ergen A. Tumour Necrosis Factor-alpha and Nuclear Factor-kappa B Gene Variants in Sepsis. Balkan Med J 2017; 35:30-35. [PMID: 28840846 PMCID: PMC5820445 DOI: 10.4274/balkanmedj.2017.0246] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background: The humoral system is activated and various cytokines are released due to infections in tissues and traumatic damage. Nuclear factor-kappa B dimers are encoded by nuclear factor-kappa B genes and regulate transcription of several crucial proteins of inflammation such as tumour necrosis factor-alpha. Aims: To investigate the possible effect of polymorphisms on tumour necrosis factor-alpha serum levels with clinical and prognostic parameters of sepsis by determining the nuclear factor-kappa B-1-94 ins/del ATTG and tumour necrosis factor-alpha (-308 G/A) gene polymorphisms and tumour necrosis factor-alpha serum levels. Study Design: Case-control study. Methods: Seventy-two patients with sepsis and 104 healthy controls were included in the study. In order to determine the polymorphisms of nuclear factor-kappa B-1-94 ins/del ATTG and tumour necrosis factor-alpha (-308 G/A), polymerase chain reaction–restriction fragment length polymorphism analysis was performed and serum tumour necrosis factor-alpha levels were determined using an enzyme-linked immunosorbent assay. Results: We observed no significant differences in tumour necrosis factor-alpha serum levels between the study groups. In the patient group, an increase in the tumour necrosis factor-alpha serum levels in patients carrying the tumour necrosis factor-alpha (-308 G/A) A allele compared to those without the A allele was found to be statistically significant. Additionally, an increase in the tumour necrosis factor-alpha serum levels in patients carrying tumour necrosis factor-alpha (-308 G/A) AA genotype compared with patients carrying the AG or GG genotypes was statistically significant. No significant differences were found in these 2 polymorphisms between the patient and control groups (p>0.05). Conclusion: Our results showed the AA genotype and the A allele of the tumour necrosis factor-alpha (-308 G/A) polymorphism may be used as a predictor of elevated tumour necrosis factor-alpha levels in patients with sepsis.
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Affiliation(s)
- Leyla Acar
- Department of Molecular Medicine, İstanbul University Institute of Experimental Medicine, İstanbul, Turkey
| | - Nazan Atalan
- Clinic of Anesthesia and Reanimation, Siyami Ersek Thoracic Cardiovascular Surgery Training and Research Hospital, İstanbul, Turkey
| | - E Hande Karagedik
- Department of Molecular Medicine, İstanbul University Institute of Experimental Medicine, İstanbul, Turkey
| | - Arzu Ergen
- Department of Molecular Medicine, İstanbul University Institute of Experimental Medicine, İstanbul, Turkey
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14
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Yan Q, Ahn SH, Medie FM, Sharma-Kuinkel BK, Park LP, Scott WK, Deshmukh H, Tsalik EL, Cyr DD, Woods CW, Yu CHA, Adams C, Qi R, Hansen B, Fowler VG. Candidate genes on murine chromosome 8 are associated with susceptibility to Staphylococcus aureus infection in mice and are involved with Staphylococcus aureus septicemia in humans. PLoS One 2017; 12:e0179033. [PMID: 28594911 PMCID: PMC5464679 DOI: 10.1371/journal.pone.0179033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 05/23/2017] [Indexed: 02/06/2023] Open
Abstract
We previously showed that chromosome 8 of A/J mice was associated with susceptibility to S. aureus infection. However, the specific genes responsible for this susceptibility are unknown. Chromosome substitution strain 8 (CSS8) mice, which have chromosome 8 from A/J but an otherwise C57BL/6J genome, were used to identify the genetic determinants of susceptibility to S. aureus on chromosome 8. Quantitative trait loci (QTL) mapping of S. aureus-infected N2 backcross mice (F1 [C8A] × C57BL/6J) identified a locus 83180780–88103009 (GRCm38/mm10) on A/J chromosome 8 that was linked to S. aureus susceptibility. All genes on the QTL (n~ 102) were further analyzed by three different strategies: 1) different expression in susceptible (A/J) and resistant (C57BL/6J) mice only in response to S. aureus, 2) consistently different expression in both uninfected and infected states between the two strains, and 3) damaging non-synonymous SNPs in either strain. Eleven candidate genes from the QTL region were significantly differently expressed in patients with S. aureus infection vs healthy human subjects. Four of these 11 genes also exhibited significantly different expression in S. aureus-challenged human neutrophils: Ier2, Crif1, Cd97 and Lyl1. CD97 ligand binding was evaluated within peritoneal neutrophils from A/J and C57BL/6J. CD97 from A/J had stronger CD55 but weaker integrin α5β1 ligand binding as compared with C57BL/6J. Because CD55/CD97 binding regulates immune cell activation and cytokine production, and integrin α5β1 is a membrane receptor for fibronectin, which is also bound by S. aureus, strain-specific differences could contribute to susceptibility to S. aureus. Down-regulation of Crif1 with siRNA was associated with increased host cell apoptosis among both naïve and S. aureus-infected bone marrow-derived macrophages. Specific genes in A/J chromosome 8, including Cd97 and Crif1, may play important roles in host defense against S. aureus.
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Affiliation(s)
- Qin Yan
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Sun Hee Ahn
- Department of Biochemistry School of Dentistry, Chonnam National University, Bukgu, Gwangju, Korea
| | - Felix Mba Medie
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Batu K. Sharma-Kuinkel
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Lawrence P. Park
- Duke Global Health Institute, Duke University, Durham, North Carolina, United States of America
| | - William K. Scott
- Dr. John T. Macdonald Foundation Department of Human Genetics and John P. Hussman Institute for Human Genomics, University of Miami, Miami, Florida, United States of America
| | - Hitesh Deshmukh
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Ephraim L. Tsalik
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Emergency Medicine Service, Durham Veteran’s Affairs Medical Center, Durham, North Carolina, United States of America
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
| | - Derek D. Cyr
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
| | - Christopher W. Woods
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
- Section on Infectious Diseases, Durham Veteran’s Affairs Medical Center, Durham, North Carolina, United States of America
| | - Chen-Hsin Albert Yu
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Carlton Adams
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Robert Qi
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Brenda Hansen
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Vance G. Fowler
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
- * E-mail:
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15
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Zhang M, Zhao Y, Liu Q. Tumor necrosis factor-α -308G/A and -238G/A polymorphisms are associated with increased risks of sepsis: evidence from an updated meta-analysis. APMIS 2017; 125:459-467. [PMID: 28294408 DOI: 10.1111/apm.12661] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 12/22/2016] [Indexed: 12/24/2022]
Abstract
Previous studies have reported the relationship between tumor necrosis factor-α (TNF-α) -308G/A and -238G/A polymorphisms and sepsis risk with inconsistent results. The aim of this study was to estimate the association of the two polymorphisms with risk of sepsis or sepsis-related mortality using a meta-analysis. PubMed, Embase, and Web of Science databases were searched up to June 20 2016. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using fixed or random effect model. Twenty-six studies were included in this meta-analysis. Overall, an increased sepsis risk of TNF-α -308G/A was observed (GA vs GG: OR = 1.43, 95% CI: 1.07-1.92; GA/AA vs GG: OR = 1.42, 95% CI: 1.06-1.89). Subgroup analyses showed that the significant association was found in Asians (GA vs GG: OR = 1.63, 95% CI: 1.01-2.63) and adult patients. Similarly, an increased sepsis risk of TNF-α -238G/A was observed in overall and subgroup analyses. However, no significant association was found between TNF-α -308G/A and -238G/A polymorphisms and sepsis-related mortality. These findings indicate that both TNF-α -308G/A and -238G/A polymorphisms were associated with increased risks of sepsis but not sepsis-related mortality. Further studies with larger sample size are needed to confirm these results.
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Affiliation(s)
- Mu Zhang
- Department of Emergency and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yu Zhao
- Department of General Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qiong Liu
- Department of Emergency and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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16
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Hydrostatin-TL1, an Anti-Inflammatory Active Peptide from the Venom Gland of Hydrophis cyanocinctus in the South China Sea. Int J Mol Sci 2016; 17:ijms17111940. [PMID: 27879679 PMCID: PMC5133935 DOI: 10.3390/ijms17111940] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 10/31/2016] [Accepted: 11/14/2016] [Indexed: 12/12/2022] Open
Abstract
Tumor necrosis factor (TNF)-α is a pleiotropic cytokine with intense pro-inflammatory and immunomodulatory properties, and anti-TNF-α biologics are effective therapies for various inflammatory diseases such as inflammatory bowel disease (IBD) and sepsis. Snake venom, as a traditional Chinese medicine, has been used in the treatment of inflammatory diseases in China for centuries. In this research, we constructed a venom gland T7 phage display library of the sea snake Hydrophis cyanocinctus to screen bioactive compounds that antagonize TNF-α and identified a novel nine-amino-acid peptide, termed hydrostatin-TL1 (H-TL1). In enzyme-linked immunosorbent assay (ELISA) and surface plasmon resonance (SPR) analyses, H-TL1 inhibited the interaction between TNF-α and TNF receptor 1 (TNFR1). Further, H-TL1 attenuated the cytotoxicity of TNF-α in L929 cells as determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. H-TL1 also decreased the mRNA expression of TNF-α/TNFR1 downstream targets and suppressed the phosphorylation of well-characterized proteins of downstream signal transduction pathways in HEK-293 cells. In vivo data demonstrated that H-TL1 protects animals against dextran sodium sulfate (DSS)-induced acute colitis and lipopolysaccharide (LPS)-induced acute shock. Given its significant anti-inflammatory activity in vitro and in vivo, H-TL1 is a potential peptide for the development of new agents to treat TNF-α-associated inflammatory diseases.
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17
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Giamarellos-Bourboulis EJ, Opal SM. The role of genetics and antibodies in sepsis. ANNALS OF TRANSLATIONAL MEDICINE 2016; 4:328. [PMID: 27713886 DOI: 10.21037/atm.2016.08.63] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
During the course of sepsis when immunosuppression predominates, the concentrations of circulating immunoglobulins (IGs) are decreased and this is associated with adverse outcomes. The production of IGs as response to invasive bacterial pathogens takes place through a complex pathway starting from the recognition of the antigen (Ag) by innate immune cells that process and present Ags to T cells. The orchestration of T-helper (Th) lymphocyte responses directs specific B cells and ends with the production of IGs by plasma cells. All molecules implicated in this process are encoded by genes bearing single nucleotide polymorphisms (SNPs). Meta-analysis of case-control studies have shown that the carriage of minor frequency SNPs of CD14, TLR2 and TNF is associated with increased sepsis risk. The ambiguity of results of clinical trials studying the clinical efficacy of exogenous IG administration in sepsis suggests that efficacy of treatment should be considered after adjustment for SNPs of all implicated genes in the pathway of IG production.
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Affiliation(s)
| | - Steven M Opal
- Infectious Disease Division, Alpert Medical School of Brown University, Providence, RI, USA
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18
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Shao Y, Shao X, He J, Cai Y, Zhao J, Chen F, Tao H, Yin Z, Tan X, He Y, Lin Y, Li K, Cui L. The promoter polymorphisms of receptor for advanced glycation end products were associated with the susceptibility and progression of sepsis. Clin Genet 2016; 91:564-575. [PMID: 27172264 DOI: 10.1111/cge.12800] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 04/16/2016] [Accepted: 05/08/2016] [Indexed: 12/18/2022]
Abstract
Receptor for advanced glycation end products (RAGE) is considered a major pattern recognition receptor, which plays an important role in the development of sepsis. Increasing evidence showed an association between RAGE polymorphisms and the susceptibility to several inflammatory-related diseases. However, little is known about the clinical relationship between RAGE polymorphisms and sepsis. In this study, we analyzed the association of sepsis with three functional RAGE gene polymorphisms (rs1800624, rs1800625 and rs2070600) in a Chinese Han population (372 sepsis cases and 400 healthy controls). Significant differences were observed in the rs1800624 and rs1800625 genotype/allele distributions between the sepsis and controls, but no significant difference was observed in the rs2070600 genotype/allele. Moreover, our results also revealed a significant difference in the genotype/allele frequencies of the rs1800624 and rs1800625 polymorphisms between the sepsis and severe sepsis subtypes, the rs1800624 TT or rs1800625 TT genotype carriers exhibited a significant increase in RAGE mRNA, sRAGE, TNF-α and IL-6 expression compared with the rs1800624 AT/AA or rs1800625 CT/CC carriers in sepsis patients. Overall, this study might provide valuable clinical evidence between the RAGE gene polymorphisms and the risk or the development of sepsis.
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Affiliation(s)
- Y Shao
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - X Shao
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - J He
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - Y Cai
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - J Zhao
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - F Chen
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - H Tao
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - Z Yin
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - X Tan
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - Y He
- The Department of Clinical Laboratory, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - Y Lin
- The Department of Stomatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
| | - K Li
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China.,Institute of Clinical Medicine, Jinan University, Guangzhou, PR China
| | - L Cui
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, PR China
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Cormier H, Rudkowska I, Lemieux S, Couture P, Vohl MC. Expression and Sequence Variants of Inflammatory Genes; Effects on Plasma Inflammation Biomarkers Following a 6-Week Supplementation with Fish Oil. Int J Mol Sci 2016; 17:375. [PMID: 26999109 PMCID: PMC4813234 DOI: 10.3390/ijms17030375] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 02/23/2016] [Accepted: 03/07/2016] [Indexed: 01/07/2023] Open
Abstract
(1) BACKGROUND: A growing body of literature suggest that polymorphisms (SNPs) from inflammation-related genes could possibly play a role in cytokine production and then interact with dietary n-3 fatty acids (FAs) to modulate inflammation. The aim of the present study was to test whether gene expression of selected inflammatory genes was altered following an n-3 PUFA supplementation and to test for gene-diet interactions modulating plasma inflammatory biomarker levels. (2) METHODS: 191 subjects completed a 6-week n-3 FA supplementation with 5 g/day of fish oil. Gene expression of TNF-α and IL6 was assessed in peripheral blood mononuclear cells (PBMCs) using the TaqMan technology. Genotyping of 20 SNPs from the TNF-LTA gene cluster, IL1β, IL6 and CRP genes was performed. (3) RESULTS: There was no significant reduction of plasma IL-6, TNF-α and C-reactive protein (CRP) levels after the 6-week fish oil supplementation. TNF-α and IL6 were slightly overexpressed in PBMCs after the supplementation (fold changes of 1.05 ± 0.38 and 1.18 ± 0.49, respectively (n = 191)), but relative quantification (RQ) within the -0.5 to 2.0 fold are considered as nonbiologically significant. In a MIXED model for repeated measures adjusted for the effects of age, sex and BMI, gene by supplementation interaction effects were observed for rs1143627, rs16944, rs1800797, and rs2069840 on IL6 levels, for rs2229094 on TNF-α levels and for rs1800629 on CRP levels (p < 0.05 for all). (4) CONCLUSIONS: This study shows that a 6-week n-3 FA supplementation with 5 g/day of fish oil did not alter gene expression levels of TNF-α and IL6 in PBMCs and did not have an impact on inflammatory biomarker levels. However, gene-diet interactions were observed between SNPs within inflammation-related genes modulating plasma inflammatory biomarker levels.
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Affiliation(s)
- Hubert Cormier
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, QC G1V 0A6, Canada.
- School of Nutrition, Laval University, Quebec City, QC G1V 0A6, Canada.
| | - Iwona Rudkowska
- Endocrinology and Nephrology, Department of Kinesiology, CHU de Québec Research Center, Laval University, Quebec City, QC G1V 0A6, Canada.
- Centre Hospitalier Universitaire (CHU) de Québec Research Center, Laval University, Quebec City, QC G1V 4G2, Canada.
| | - Simone Lemieux
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, QC G1V 0A6, Canada.
- School of Nutrition, Laval University, Quebec City, QC G1V 0A6, Canada.
| | - Patrick Couture
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, QC G1V 0A6, Canada.
- Centre Hospitalier Universitaire (CHU) de Québec Research Center, Laval University, Quebec City, QC G1V 4G2, Canada.
| | - Marie-Claude Vohl
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, QC G1V 0A6, Canada.
- School of Nutrition, Laval University, Quebec City, QC G1V 0A6, Canada.
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Rimmelé T, Payen D, Cantaluppi V, Marshall J, Gomez H, Gomez A, Murray P, Kellum JA. IMMUNE CELL PHENOTYPE AND FUNCTION IN SEPSIS. Shock 2016; 45:282-91. [PMID: 26529661 PMCID: PMC4752878 DOI: 10.1097/shk.0000000000000495] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cells of the innate and adaptive immune systems play a critical role in the host response to sepsis. Moreover, their accessibility for sampling and their capacity to respond dynamically to an acute threat increases the possibility that leukocytes might serve as a measure of a systemic state of altered responsiveness in sepsis.The working group of the 14th Acute Dialysis Quality Initiative (ADQI) conference sought to obtain consensus on the characteristic functional and phenotypic changes in cells of the innate and adaptive immune system in the setting of sepsis. Techniques for the study of circulating leukocytes were also reviewed and the impact on cellular phenotypes and leukocyte function of nonextracorporeal treatments and extracorporeal blood purification therapies proposed for sepsis was analyzed.A large number of alterations in the expression of distinct neutrophil and monocyte surface markers have been reported in septic patients. The most consistent alteration seen in septic neutrophils is their activation of a survival program that resists apoptotic death. Reduced expression of HLA-DR is a characteristic finding on septic monocytes, but monocyte antimicrobial function does not appear to be significantly altered in sepsis. Regarding adaptive immunity, sepsis-induced apoptosis leads to lymphopenia in patients with septic shock and it involves all types of T cells (CD4, CD8, and Natural Killer) except T regulatory cells, thus favoring immunosuppression. Finally, numerous promising therapies targeting the host immune response to sepsis are under investigation. These potential treatments can have an effect on the number of immune cells, the proportion of cell subtypes, and the cell function.
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Affiliation(s)
- Thomas Rimmelé
- Anesthesiology and Critical Care Medicine, Edouard Herriot Hospital, Hospices Civils de Lyon, University Claude Bernard Lyon 1, Lyon, France
| | - Didier Payen
- Department of Anesthesiology & Critical Care and UMR INSERM 1160; Lariboisière Hospital, AP-HP and University Paris 7, Sorbonne Paris Cité, Paris, France
| | - Vincenzo Cantaluppi
- Nephrology, Dialysis and Kidney Transplantation Unit, Department of Medical Sciences, “Citta' della Salute e della Scienza di Torino- Molinette” University Hospital, Torino, Italy
| | - John Marshall
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Ontario Canada
| | - Hernando Gomez
- Center for Critical Care Nephrology; The CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Alonso Gomez
- Academia Colombiana de Medicina Critica (ACOMEC)
- Division of Critical Care Medicine, Clínica Palermo, Bogotá, Colombia
| | | | - John A. Kellum
- Center for Critical Care Nephrology; The CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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21
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Cutforth T, DeMille MM, Agalliu I, Agalliu D. CNS autoimmune disease after Streptococcus pyogenes infections: animal models, cellular mechanisms and genetic factors. FUTURE NEUROLOGY 2016; 11:63-76. [PMID: 27110222 DOI: 10.2217/fnl.16.4] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Streptococcus pyogenes infections have been associated with two autoimmune diseases of the CNS: Sydenham's chorea (SC) and Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus infections (PANDAS). Despite the high frequency of pharyngeal streptococcus infections among children, only a small fraction develops SC or PANDAS. This suggests that several factors in combination are necessary to trigger autoimmune complications: specific S. pyogenes strains that induce a strong immune response toward the host nervous system; genetic susceptibility that predispose children toward an autoimmune response involving movement or tic symptoms; and multiple infections of the throat or tonsils that lead to a robust Th17 cellular and humoral immune response when untreated. In this review, we summarize the evidence for each factor and propose that all must be met for the requisite neurovascular pathology and behavioral deficits found in SC/PANDAS.
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Affiliation(s)
- Tyler Cutforth
- Department of Neurology, Columbia University Medical Center, 650 West 168 Street, Room 310E, New York, NY 10032, USA
| | - Mellissa Mc DeMille
- Department of Pediatrics, Yale Child Health Research Center, Yale University School of Medicine, 464 Congress Avenue, Suite S208, New Haven, CT 06519, USA
| | - Ilir Agalliu
- Department of Epidemiology & Population Health, Albert Einstein College of Medicine, 1300 Morris Park Ave., Room 1315-B, Bronx, NY 10461, USA
| | - Dritan Agalliu
- Department of Neurology, Columbia University Medical Center, 650 West 168 Street, Room 310E, New York, NY 10032, USA; Departments of Pathology & Cell Biology & Pharmacology, Columbia University Medical Center, 650 West 168 Street, Room 310E, New York, NY 10032, USA
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Feng B, Mao ZR, Pang K, Zhang SL, Li L. Association of tumor necrosis factor α -308G/A and interleukin-6 -174G/C gene polymorphism with pneumonia-induced sepsis. J Crit Care 2015; 30:920-3. [PMID: 26025100 DOI: 10.1016/j.jcrc.2015.04.123] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 04/20/2015] [Accepted: 04/29/2015] [Indexed: 01/03/2023]
Abstract
PURPOSE Sepsis is a lethal outcome of the inflammation and coagulation process. Human interleukin (IL)-6 and tumor necrosis factor (TNF) α are well-known inflammation factors closely associated with sepsis. In the present study, we aim to investigate the association of promoter-region polymorphisms IL-6 (-174G/C) rs1800795 and TNF-α (-308G/A) rs1800629 with pneumonia-induced sepsis. MATERIALS AND METHODS A total of 277 Chinese patients with severe pneumonia-induced sepsis were recruited into this study. All study participants were admitted to the intensive care unit until discharge or death in the First Affiliated Hospital of Zhengzhou University from July 2010 to July 2014. The patients were classified as severely septic, septic shock, and mortality. Clinical data and demographic information were recorded. TaqMan genotyping was performed to detect single nucleotide polymorphism distribution. RESULTS The genotype results demonstrated that carriers of the TNF-α rs1800629 A allele had a 4.28-fold higher risk for septic shock (adjusted odds ratio [OR], 4.28; 95% confidence interval [CI], 2.24-8.18; P < .01) compared with severe sepsis, and carriers of the IL-6 rs1800795 C allele had a 2.42-fold higher risk for septic shock (OR, 2.42; 95% CI, 1.08-5.45; P < .01) compared with severe sepsis. No significant difference of SNP distribution was found between the survivors and the nonsurvivors. After the results were adjusted for age and the outcomes of blood cultures, a multivariate logistic regression analysis showed similar results. Individuals with the TNF-α 308 rs1800629 A allele (adjusted OR, 2.96; 95% CI, 1.30-7.87) or the IL-6 rs1800795 C allele (adjusted OR, 1.87; 95% CI, 1.03-3.61) had a higher prevalence of septic shock. However, these SNP distribution differences were not associated with mortality. CONCLUSIONS In intensive care unit patients, the TNF-α -308A allele and the IL-6 rs1800795 allele variants were susceptibility risk factors for septic shock induced by pneumonia.
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Affiliation(s)
- Bo Feng
- Department of Emergency Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China; Department of Intensive Care Unit, The First Affiliated Hospital of Henan University of TCM, Zhengzhou, PR China
| | - Zheng-rong Mao
- Department of Intensive Care Unit, The First Affiliated Hospital of Henan University of TCM, Zhengzhou, PR China
| | - Kai Pang
- Department of Intensive Care Unit, The First Affiliated Hospital of Henan University of TCM, Zhengzhou, PR China
| | - Shao-lei Zhang
- Department of Intensive Care Unit, The First Affiliated Hospital of Henan University of TCM, Zhengzhou, PR China
| | - Li Li
- Department of Emergency Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China.
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Stappers MHT, Thys Y, Oosting M, Plantinga TS, Ioana M, Reimnitz P, Mouton JW, Netea MG, Joosten LAB, Gyssens IC. Polymorphisms in cytokine genes IL6, TNF, IL10, IL17A and IFNG influence susceptibility to complicated skin and skin structure infections. Eur J Clin Microbiol Infect Dis 2014; 33:2267-74. [DOI: 10.1007/s10096-014-2201-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 06/27/2014] [Indexed: 12/30/2022]
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24
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Yan Q, Sharma-Kuinkel BK, Deshmukh H, Tsalik EL, Cyr DD, Lucas J, Woods CW, Scott WK, Sempowski GD, Thaden J, Rude TH, Ahn SH, Fowler VG. Dusp3 and Psme3 are associated with murine susceptibility to Staphylococcus aureus infection and human sepsis. PLoS Pathog 2014; 10:e1004149. [PMID: 24901344 PMCID: PMC4047107 DOI: 10.1371/journal.ppat.1004149] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 04/12/2014] [Indexed: 01/21/2023] Open
Abstract
Using A/J mice, which are susceptible to Staphylococcus aureus, we sought to identify genetic determinants of susceptibility to S. aureus, and evaluate their function with regard to S. aureus infection. One QTL region on chromosome 11 containing 422 genes was found to be significantly associated with susceptibility to S. aureus infection. Of these 422 genes, whole genome transcription profiling identified five genes (Dcaf7, Dusp3, Fam134c, Psme3, and Slc4a1) that were significantly differentially expressed in a) S. aureus -infected susceptible (A/J) vs. resistant (C57BL/6J) mice and b) humans with S. aureus blood stream infection vs. healthy subjects. Three of these genes (Dcaf7, Dusp3, and Psme3) were down-regulated in susceptible vs. resistant mice at both pre- and post-infection time points by qPCR. siRNA-mediated knockdown of Dusp3 and Psme3 induced significant increases of cytokine production in S. aureus-challenged RAW264.7 macrophages and bone marrow derived macrophages (BMDMs) through enhancing NF-κB signaling activity. Similar increases in cytokine production and NF-κB activity were also seen in BMDMs from CSS11 (C57BL/6J background with chromosome 11 from A/J), but not C57BL/6J. These findings suggest that Dusp3 and Psme3 contribute to S. aureus infection susceptibility in A/J mice and play a role in human S. aureus infection.
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Affiliation(s)
- Qin Yan
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Batu K. Sharma-Kuinkel
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Hitesh Deshmukh
- Division of Neonatology, Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Ephraim L. Tsalik
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Emergency Medicine Service, Durham Veteran's Affairs Medical Center, Durham, North Carolina, United States of America
- Duke Institute for Genome Sciences & Policy, Duke University, Durham, North Carolina, United States of America
| | - Derek D. Cyr
- Duke Institute for Genome Sciences & Policy, Duke University, Durham, North Carolina, United States of America
| | - Joseph Lucas
- Quintiles Innovations, Morrisville, North Carolina, United States of America
| | - Christopher W. Woods
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Institute for Genome Sciences & Policy, Duke University, Durham, North Carolina, United States of America
- Section on Infectious Diseases, Durham Veteran's Affairs Medical Center, Durham, North Carolina, United States of America
| | - William K. Scott
- Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, United States of America
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | | | - Joshua Thaden
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Institute for Genome Sciences & Policy, Duke University, Durham, North Carolina, United States of America
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
| | - Thomas H. Rude
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Sun Hee Ahn
- Department of Biochemistry School of Dentistry, Chonnam National University, Bukgu, Gwangju, Korea
| | - Vance G. Fowler
- Division of Infectious Diseases & International Health, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, United States of America
- Duke Institute for Genome Sciences & Policy, Duke University, Durham, North Carolina, United States of America
- Duke Clinical Research Institute, Durham, North Carolina, United States of America
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Ramakrishna K, Pugazhendhi S, Kabeerdoss J, Peter JV. Association between heat shock protein 70 gene polymorphisms and clinical outcomes in intensive care unit patients with sepsis. Indian J Crit Care Med 2014; 18:205-11. [PMID: 24872649 PMCID: PMC4033853 DOI: 10.4103/0972-5229.130571] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective: The objective of the following study is to evaluate the associations between single nucleotide polymorphisms (SNPs) in the Heat Shock Protein 70 (HSP70) gene, gene expression of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) and medical intensive care unit (MICU) stay and organ failure in sepsis. Materials and Methods: MICU patients with sepsis were genotyped for rs1061581, rs2227956, rs1008438 and rs1043618 polymorphisms in HSP70 gene using polymerase chain reaction (PCR)-restriction fragment length polymorphism analysis or allele-specific PCR. Messenger ribonucleic acid (mRNA) expression of IL-6 and TNF-α were quantitated in peripheral blood lymphocytes. Outcomes were recorded. Results: 108 patients (48 male) aged 40.7 ± 16.0 (mean ± standard deviation) years included H1N1 infection (36), scrub typhus (29) and urosepsis (12). Seventy-one (65.7%) had dysfunction of three or more organ systems, 66 patients (61.1%) were treated by mechanical ventilation, 21 (19.4%) needed dialysis. ICU stay was 9.3 ± 7.3 days. Mortality was 38.9%. One or more SNPs were noted in 101/108 (93.5%) and organ failure was noted in only 1/7 patients without a single SNP. The A allelotypes of rs1061581 and rs1008438 were associated with hematological dysfunction (P = 0.03 and 0.07) and longer ICU stay (P = 0.05 and 0.04), whereas IL-6 and TNF-α mRNA levels were associated with central nervous system dysfunction. Conclusions: HSP70 genotypes may determine some adverse outcomes in patients with sepsis.
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Affiliation(s)
- Kartik Ramakrishna
- Department of Intensive Care, Wellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India ; Department of Internal Medicine, Unity Health System, Rochester, NY 14626, USA ; Department of Gastrointestinal Sciences, Wellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India
| | - Srinivasan Pugazhendhi
- Department of Gastrointestinal Sciences, Wellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India
| | - Jayakanthan Kabeerdoss
- Department of Gastrointestinal Sciences, Wellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India
| | - John Victor Peter
- Department of Intensive Care, Wellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India
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The functional polymorphisms of miR-146a are associated with susceptibility to severe sepsis in the Chinese population. Mediators Inflamm 2014; 2014:916202. [PMID: 24701036 PMCID: PMC3950573 DOI: 10.1155/2014/916202] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 01/08/2014] [Accepted: 01/12/2014] [Indexed: 12/13/2022] Open
Abstract
MicroRNA-146a (miR-146a) acts as a pivotal regulatory molecule in immune response and various diseases, such as carcinoma and autoimmune diseases. Growing evidences have demonstrated the association of miR-146a gene single-nucleotide polymorphisms (SNPs) with risk of several diseases, but no genetic relevance studies of miR-146a gene polymorphisms to sepsis have been reported by now. Our study has analyzed the association of sepsis with two functional miR-146a gene SNPs rs2910164 G/C and rs57095329 A/G in a Chinese Han population (226 sepsis cases; 206 healthy controls). Our results indicated a higher prevalence of the miR-146a gene SNP rs2910164 C allele and CC genotype in patients with severe sepsis (rs2910164G versus rs2910164C: P = 0.0029, odds ratio (OR) = 1.664; GG+GC versus CC: P = 0.0045, OR = 1.947). Neither the genotype nor the allele in rs57095329 showed significant differences between the septic cases and the controls (P = 0.5901 and 0.3580, resp.), and no significant difference was observed in the subgroups. In addition, we confirmed that the two SNPs rs2910164 and rs57095329 could functionally affect the miR-146a expression levels and the reduction of miR146a was accompanied with the upregulation of the expression levels of TRAF-6 and IRAK-1 in severe sepsis patients. This present study might provide valuable clinical evidence that miR-146a gene polymorphism rs2910164 is associated with the risk of severe sepsis.
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Li L, Nie W, Li W, Yuan W, Huang W. Associations between TNF-α polymorphisms and pneumonia: a meta-analysis. PLoS One 2013; 8:e61039. [PMID: 23577187 PMCID: PMC3620059 DOI: 10.1371/journal.pone.0061039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 03/05/2013] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Several studies evaluated the associations of tumor necrosis factor-α (TNF-α) polymorphisms with pneumonia in different populations. However, the results were conflicting and controversial. METHODS Databases including PubMed, Embase, Web of Science, and China National Knowledge Infrastructure (CNKI) were searched to find relevant studies. Data were extracted independently by two investigators. Crude odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were estimated. RESULTS Twelve case-control studies and one cohort study were included. Overall, no association between TNF-α -308A/G polymorphism and pneumonia risk was observed for AA +AG vs. GG (OR = 1.13; 95% CI 0.99-1.30; P = 0.07). In addition, TNF-α -308A/G polymorphism was not associated with pneumonia mortality (OR = 1.96; 95% CI 0.94-4.09; P = 0.07). Furthermore, there was no association of TNF-α -238A/G polymorphism with the risk of pneumonia (OR = 1.38; 95% CI 0.84-2.28; P = 0.20). CONCLUSIONS TNF-α -308A/G, -238A/G polymorphisms were not associated with pneumonia risk. Moreover, TNF-α -308A/G polymorphism did not play a role in the pneumonia mortality risk.
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Affiliation(s)
- Li Li
- Department of Respiratory Medicine, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, China
| | - Wei Nie
- Department of Respiratory Medicine, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Weifeng Li
- Department of Respiratory Medicine, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, China
| | - Weifeng Yuan
- Department of Respiratory Medicine, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, China
| | - Wenjie Huang
- Department of Respiratory Medicine, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, China
- * E-mail:
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