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The Update Immune-Regulatory Role of Pro- and Anti-Inflammatory Cytokines in Recurrent Pregnancy Losses. Int J Mol Sci 2022; 24:ijms24010132. [PMID: 36613575 PMCID: PMC9820098 DOI: 10.3390/ijms24010132] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
Recurrent pregnancy losses (RPL) is a common reproductive disorder with various underlying etiologies. In recent years, rapid progress has been made in exploring the immunological mechanisms for RPL. A propensity toward Th2 over Th1 and regulatory T (Treg) over Th17 immune responses may be advantageous for reproductive success. In women with RPL and animals prone to abortion, an inordinate expression of cytokines associated with implantation and early embryo development is present in the endometrium or decidua secreted from immune and non-immune cells. Hence, an adverse cytokine milieu at the maternal-fetal interface assaults immunological tolerance, leading to fetal rejection. Similar to T cells, NK cells can be categorized based on the characteristics of cytokines they secrete. Decidual NK (dNK) cells of RPL patients exhibited an increased NK1/NK2 ratio (IFN-γ/IL-4 producing NK cell ratios), leading to pro-inflammatory cytokine milieu and increased NK cell cytotoxicity. Genetic polymorphism may be the underlying etiologies for Th1 and Th17 propensity since it alters cytokine production. In addition, various hormones participate in cytokine regulations, including progesterone and estrogen, controlling cytokine balance in favor of the Th2 type. Consequently, the intricate regulation of cytokines and hormones may prevent the RPL of immune etiologies. Local or systemic administration of cytokines or their antagonists might help maintain adequate cytokine milieu, favoring Th2 over Th1 response or Treg over Th17 immune response in women with RPL. Herein, we provided an updated comprehensive review regarding the immune-regulatory role of pro- and anti-inflammatory cytokines in RPL. Understanding the roles of cytokines involved in RPL might significantly advance the early diagnosis, monitoring, and treatment of RPL.
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Xu L, Liu C, Zheng Y, Huang Y, Zhong Y, Zhao Z, Ma N, Zhang Z, Zhang L. Association of TNF-α-308G/A, -238G/A, -863C/A, -1031T/C, -857C/T polymorphisms with periodontitis susceptibility: Evidence from a meta-analysis of 52 studies. Medicine (Baltimore) 2020; 99:e21851. [PMID: 32899013 PMCID: PMC7478382 DOI: 10.1097/md.0000000000021851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The association between tumor necrosis factor-alpha (TNF-α-308G/A, -238G/A, -863C/A, -1031T/C, and -857C/T) polymorphism and either chronic (CP) or aggressive (AgP) periodontitis susceptibility was conflicting. This meta-analysis aimed to quantitatively estimate the association.A total of 52 studies involving 5519 patients and 7260 controls were identified through a search of multiple electronic databases. Odds ratios (ORs) and their 95% confidence intervals using allele, homozygous, heterozygous, dominant, and recessive genetic models were computed to assess the strength of the association.The TNF-α-308G/A polymorphism was significantly associated with decreased risks of CP (GG vs AA: OR = 0.353, P < .001; GG+GA vs AA: OR = 0.480, P < .001) and AgP (G vs A: OR = 0.651, P < .001; GG vs AA: OR = 0.306, P < .001; GG+GA vs AA: OR = 0.384, P < .001) in Asians. There were no associations between TNF-α-238G/A, -863C/A, -1031T/C, -857C/T polymorphism and susceptibility to AgP. No associations were also found between CP susceptibility and TNF-α-238G/A, -857C/T polymorphism.These findings supported that TNF-α-308G/A polymorphism might be the protective factors of CP and AgP in Asians, and TNF-α-238G/A, -863C/A, -1031T/C, -857C/T polymorphism is not linked to AgP susceptibility.
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Affiliation(s)
- Lishuo Xu
- Department of Periodontology, Jilin Stomatological Hospital, Hospital of Stomatology, Jilin University
| | - Chenguang Liu
- Department of Stomatology, Jilin Province People's Hospital, Changchun, Jilin
| | - Youli Zheng
- Department of General Dentistry, Stomatological Hospital, Tianjin Medical University, Tianjin
| | - Yu Huang
- Department of Periodontology, Jilin Stomatological Hospital, Hospital of Stomatology, Jilin University
| | - Yang Zhong
- Department of Periodontology, Jilin Stomatological Hospital, Hospital of Stomatology, Jilin University
| | - Zhulan Zhao
- Department of Emergency, Jilin Stomatological Hospital, Hospital of Stomatology, Jilin University, Changchun, Jilin
| | - Ning Ma
- Department of Periodontology, Jilin Stomatological Hospital, Hospital of Stomatology, Jilin University
| | - Zheng Zhang
- Department of Periodontology, Tianjin Stomatological Hospital and Tianjin Key Laboratory of Oral Function Reconstruction, Hospital of Stomatology, Nankai University, Tianjin, China
| | - Li Zhang
- Department of Emergency, Jilin Stomatological Hospital, Hospital of Stomatology, Jilin University, Changchun, Jilin
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Kim JA, Bang CH, Song GG, Kim JH, Choi SJ, Jung JH. Tumour necrosis factor alpha gene polymorphisms in women with recurrent pregnancy loss: a meta-analysis. HUM FERTIL 2018; 23:159-169. [PMID: 30501430 DOI: 10.1080/14647273.2018.1543899] [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: 12/31/2022]
Abstract
Tumour necrosis factor alpha (TNF-α) concentration is associated with recurrent pregnancy loss (RPL). Moreover, TNF-α promoter polymorphisms affect cellular TNF-α concentrations. Although several studies on TNF-α polymorphisms have been reported, these studies only define specific loci and result in conflicting conclusions. The meta-analysis in this study was performed to examine the relationship between various TNF-α polymorphisms and RPL. We searched for articles, using MEDLINE and Embase, and performed meta-analysis of 21 studies involving 3437 cases and 4016 controls. The results demonstrated that the -308G/A polymorphism is positively associated with RPL, particularly in cases involving three or more miscarriages. For -1031T/C, -863C/A, and -376G/A polymorphisms, recessive and homozygote models revealed significant associations with RPL. However, -857C/T, -238G/A, and +488G/A polymorphisms showed no association with RPL. A subgroup analysis with respect to ethnicity demonstrated that the -308G/A and -238G/A polymorphisms are associated with RPL in Asian and Middle Eastern populations, respectively. This meta-analysis showed the associations between TNF-α polymorphisms and RPL. However, further studies of genetic polymorphisms in TNF-α other than -308G/A and -238G/A are required.
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Affiliation(s)
- Jung A Kim
- Korea University College of Medicine, Seoul, Korea.,Division of Endocrinology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Cho Hee Bang
- Korea University College of Nursing, Seoul, Korea
| | - Gwan Gyu Song
- Korea University College of Medicine, Seoul, Korea.,Division of Rheumatology, Department of Internal medicine, Korea University Guro Hospital, Seoul, Korea
| | - Jae-Hoon Kim
- Korea University College of Medicine, Seoul, Korea.,Division of Rheumatology, Department of Internal medicine, Korea University Guro Hospital, Seoul, Korea
| | - Sung Jae Choi
- Korea University College of Medicine, Seoul, Korea.,Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan-si, Gyeonggi-do, Korea
| | - Jae Hyun Jung
- Korea University College of Medicine, Seoul, Korea.,Division of Rheumatology, Department of Internal medicine, Korea University Guro Hospital, Seoul, Korea
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Dong J, Li J, Zhou G, Peng Z, Li J, Lin S, Liu H, Wu C, Huang Y, Lv X, Dai S. No Association between TNF-α -308G/A Polymorphism and Idiopathic Recurrent Miscarriage: A Systematic Review with Meta-Analysis and Trial Sequential Analysis. PLoS One 2016; 11:e0166892. [PMID: 27893839 PMCID: PMC5125640 DOI: 10.1371/journal.pone.0166892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 11/04/2016] [Indexed: 11/19/2022] Open
Abstract
Background Conflicting results were reported on the association between the TNF-α -308G/A polymorphism and idiopathic recurrent miscarriage (IRM). Though three meta-analyses have been conducted on this topic, the conclusions were contradictory, and the results may be unreliable as certain crucial conditions were neglected. Method A complete search was conducted in PubMed, Cochrane Library, and Embase, other sources like Google Scholar, ClinicalTrial.gov and reference lists of relevant articles were also retrieved. All candidate articles were accessed and screened using specific inclusion and exclusion criteria. Statistical analyses were performed on data extracted from eligible studies using the STATA 12.0 software and the TSA 0.9 beta software. Results Eventually, 12 case-control studies from 11 publications (with 1,807 cases and 2,012 controls) were included in this meta-analysis, and no evidence of any significant association was found in the overall analyses between the TNF-α -308G/A polymorphism and IRM risk. However, significant association was shown in Asian population (four studies from three publications) in the dominant model (AA + GA vs. GG), the allelic model (A vs. G), and the heterozygote model (GA vs. GG). Conclusions TNF-α -308G/A polymorphism is not associated with IRM risk. Though significant association was found in Asian population, the result needs further confirmation from more studies.
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Affiliation(s)
- Jiashu Dong
- Department of Clinical Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Jinwan Li
- Department of Clinical Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Gechen Zhou
- Department of Clinical Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Zheng Peng
- Department of Clinical Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Jingjing Li
- Department of Gynaecology and Obstetrics, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Shengzhang Lin
- Department of Clinical Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Haihua Liu
- Department of Clinical Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Chunlin Wu
- Department of Clinical Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Yujie Huang
- Department of Clinical Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Xiaolan Lv
- Department of Clinical Laboratory, Liuzhou Maternity and Child Health Care Hospital, Liuzhou, Guangxi, China
| | - Shengming Dai
- Department of Clinical Laboratory, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
- * E-mail:
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Tumor Necrosis Factor Alpha Gene Polymorphism and Association With Its Serum Level in Iranian Population with Rheumatoid Arthritis. Arch Rheumatol 2016; 31:306-313. [PMID: 30375554 DOI: 10.5606/archrheumatol.2016.5907] [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: 01/18/2016] [Accepted: 04/19/2016] [Indexed: 12/14/2022] Open
Abstract
Objectives This study aims to determine whether promoter -238 G/A polymorphism in tumor necrosis factor-alpha (TNF-α) gene is associated with susceptibility to rheumatoid arthritis (RA) in Iranian population and serum level of TNF-a. Patients and methods This case-controlled study was performed on two groups including 90 RA patients (20 males, 70 females; mean age 50.3 years; range 26 to 65 years) and 90 healthy controls (21 males, 69 females; mean age 48.6 years; range 27 to 63 years). We determined the frequency of -238 G/A TNF-a gene polymorphism by polymerase chain reaction restriction fragment length polymorphism. We measured the serum level of TNF-a using enzyme-linked immunosorbent assay method. Also, we determined the association of serum TNF-a level with the polymorphism in RA patients. Results There was no significant difference in terms of sex and age in the two groups. In the RA group, the genotype frequency of -238 G/A polymorphism was GG (76.6%), GA (17.8%), and AA (5.6%). In the control group, the genotype frequency of -238 G/A polymorphism was GG (83.5%), GA (8.8%), and AA (7.7%). Statistical analysis showed no significant difference in the genotype frequency of this polymorphism between two groups (p=0.07). The serum level of TNF-a were 5.21±1.69 Pg/mL (range 0 to 11.6) in the control group and 62.4±27.1 Pg/mL (range 0 to 117.22) in the RA group (p<0.0001). There was no significant difference in terms of serum TNF-a level and different genotypes in the RA group (p=0.5). Conclusion Our findings demonstrate that the TNF-a -238 G/A gene polymorphism may not represent a significant risk factor for RA in Iranian population and there is no association between the polymorphism and serum TNF-a level in RA patients.
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Li HH, Xu XH, Tong J, Zhang KY, Zhang C, Chen ZJ. Association of TNF-α genetic polymorphisms with recurrent pregnancy loss risk: a systematic review and meta-analysis. Reprod Biol Endocrinol 2016; 14:6. [PMID: 26837816 PMCID: PMC4736635 DOI: 10.1186/s12958-016-0140-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 01/14/2016] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Several studies on the association of tumor necrosis factor alpha (TNF-α) polymorphisms with recurrent pregnancy loss (RPL) risk have reported conflicting results. The present meta-analysis was conducted to provide a more precise estimation of these relationships and to investigate the real association between TNF-α polymorphisms and RPL. METHODS An extensive eligible literature search for relevant studies was conducted on PubMed, Embase, and The Cochrane Library from their inceptions to May 12, 2015. Specific inclusion criteria were used to evaluate articles. The odds ratio (OR) with 95% confidence intervals (CIs) were used to assess the strength of associations. Statistical analyses were performed by the STATA12.0 software. RESULTS 10 case-control studies including 1430 RPL patients and 1727 healthy controls were identified. Meta-analysis indicated that TNF-α-308G/A (rs1800629) polymorphism in the TNF-α gene correlated with elevated RPL risk whereas no significant association was observed between TNF-α-238G/A (rs361625) and RPL. CONCLUSIONS The current meta-analysis demonstrates that TNF-α-308G/A polymorphism in the TNF-α gene is associated with susceptibility to RPL.
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Affiliation(s)
- Hui-Hui Li
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, China
| | - Xing-Hua Xu
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University; Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, 250021, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, The Key laboratory for Reproductive Endocrinology of Ministry of Education, Jinan, 250021, China
- Department of Gynecology and Obstetrics, Liaocheng People's Hospital, Liaocheng, 252000, China
| | - Jing Tong
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, China
| | - Kai-Yue Zhang
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, China
| | - Cong Zhang
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, China.
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, China.
| | - Zi-Jiang Chen
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200135, China.
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, 200135, China.
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University; Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, 250021, China.
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, The Key laboratory for Reproductive Endocrinology of Ministry of Education, Jinan, 250021, China.
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Gallot V, Nedellec S, Capmas P, Legendre G, Lejeune-Saada V, Subtil D, Nizard J, Levêque J, Deffieux X, Hervé B, Vialard F. Fausses couches précoces « à répétition » : bilan et prise en charge. ACTA ACUST UNITED AC 2014; 43:812-41. [DOI: 10.1016/j.jgyn.2014.09.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Hua F, Li CH, Wang H, Xu HG. Relationship between expression of COX-2, TNF-α, IL-6 and autoimmune-type recurrent miscarriage. ASIAN PAC J TROP MED 2014; 6:990-4. [PMID: 24144034 DOI: 10.1016/s1995-7645(13)60178-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 10/15/2013] [Accepted: 11/15/2013] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To investigate the roles of COX-2, TNF-α, IL-6 in the pathogenesis of autoimmune-type recurrent spontaneous abortion (RSA). METHODS RT-PCR was used to detect the mRNA of COX-2, TNF-α, IL-6 in the trophoblast cells of murine RSA and normal pregnant models. The COX-2, TNF-α, IL-6 protein expressions were determined by using immunohistochemisry staining method. The COX-2, TNF-α, IL-6 protein expressions were determined by ELISA. RESULTS The embryo loss rates in experiment group was significantly higher than that in normal pregnancy control group, the expression of COX-2, TNF-α, IL-6 in the trophoblast cells of murine RSA and normal pregnant models. The expression of COX-2 in autoimmune-type recurrent spontaneous abortion was significantly lesser than in normal pregnant models. The expression of TNF-α, IL-6 in autoimmune-type recurrent spontaneous abortion was significantly higher than in normal pregnant models. There was a positively correlation between TNF-α and IL-6. There was no relationship between COX-2, TNF-α and IL-6. CONCLUSIONS The abnormal expression of COX-2, TNF-α and IL-6 may result in RSA.
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Affiliation(s)
- Fu Hua
- Department of Gynaecology and Obstetrics, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, China
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Wei D, Wu Q, Shi H. Apoptosis and p53 expression in the placental villi of females with unexplained recurrent spontaneous abortion. Exp Ther Med 2013; 7:191-194. [PMID: 24348788 PMCID: PMC3861175 DOI: 10.3892/etm.2013.1399] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Accepted: 10/28/2013] [Indexed: 01/17/2023] Open
Abstract
The aim of this study was to explore the level of apoptosis and p53 expression in the placental villi of patients with unexplained recurrent spontaneous abortion (URSA). Fifty-three pregnant females with URSA and 32 pregnant females who required an induced abortion were selected as the subjects of this study. Placental villus tissues were collected from June 2010 to June 2012 and quantitative polymerase chain reaction (qPCR) and immunohistochemical analysis were performed to determine the mRNA and protein levels of p53 in the placental villus tissues. The level of apoptosis in the tissues was studied using terminal deoxynucleotidyltransferase-mediated dUTP nick end labeling (TUNEL) assay. The mRNA and protein expression levels of p53 in the URSA group were significantly higher than those in the control group (P<0.05). Furthermore, the levels of apoptosis were increased markedly in the URSA group compared with the control group (P<0.05). In conclusion, the placental villi of patients with URSA express a high level of p53, which may result in cell apoptosis and lead to recurrent spontaneous abortion.
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Affiliation(s)
- Dehua Wei
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, P.R. China ; Department of Gynecology and Obstetrics, Puyang People's Hospital, Puyang, Henan 457000, P.R. China
| | - Qinghua Wu
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, P.R. China
| | - Huirong Shi
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, P.R. China
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Yang W, Jia Y, Wu H. Four tumor necrosis factor alpha genes polymorphisms and periodontitis risk in a Chinese population. Hum Immunol 2013; 74:1684-7. [PMID: 23973890 DOI: 10.1016/j.humimm.2013.08.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 06/26/2013] [Accepted: 08/10/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND Tumour necrosis factor-alpha (TNF-alpha) has been implicated in the pathogenesis of generalized aggressive periodontitis (AgP) and chronic periodontitis (CP). The objective of the present study was to evaluate the association of four TNF-alpha gene polymorphisms (-1031T/C, -857C/T, -308G/A and -238G/A) with susceptibility to AgP and CP in a Chinese population. METHODS A hospital-based case-control study was conducted in in patients with CP (n = 180), AgP (n = 180) and healthy controls (n = 180). Gene promoter polymorphisms were analyzed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay. Genotype and allele frequencies were analyzed using the chi-square test and logistic regression analysis. RESULTS TNF-alpha -1031CC genotype was significantly higher [odds ratio (OR) = 2.36, 95% confidence interval (CI) = 1.03, 5.43; P = 0.04] in patients with CP compared with healthy controls. TNF-alpha -308AA genotype was significantly higher (OR = 2.71, 95% CI = 1.09, 6.73; P = 0.03) in patients with AgP compared with healthy controls. No association was found of TNF-alpha -857C/T and -238G/A polymorphisms with susceptibility to AgP or CP. CONCLUSIONS Our data demonstrated that TNF-alpha -1031CC genotype was a risk factor for CP, and that TNF-alpha -308AA genotype was a risk factor for AgP. But there is a lack of association of TNF-alpha -857C/T and -238G/A polymorphisms with susceptibility to AgP or CP in a Chinese population.
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Affiliation(s)
- Wenwei Yang
- Department of Geriatric Dentistry, West China College of Stomatology, Sichuan University, Chengdu 610041, China
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The TNF-α -308 Promoter Gene Polymorphism and Chronic HBV Infection. HEPATITIS RESEARCH AND TREATMENT 2012; 2012:493219. [PMID: 23133749 PMCID: PMC3485862 DOI: 10.1155/2012/493219] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 09/13/2012] [Accepted: 10/01/2012] [Indexed: 01/30/2023]
Abstract
Background and Aims. TNF-α -308 allele promoter polymorphism has been known to be a potential prognostic factor in patients with chronic HBV infection. We tried to determine how TNF-α -308 allele promoter polymorphism would affect the prognosis in patients with chronic HBV infection. Methods. We searched MEDLINE, EMBASE, and reference lists of relevant review articles related to the association between “TNF-α G-308A promoter polymorphism” with “chronic HBV infection”. We only focused on searching -308 locus in published studies. We reviewed 21 original articles about TNF-α -308 allele polymorphism and its effect on prognosis in patients with chronic HBV infection and discussed the results. Results. conflicting results were observed. The results were divided into 3 groups including neutral, negative, and positive associations between TNF-α -308 allele polymorphism and prognosis in patients with chronic HBV infection. We summarized the primary data as a table. Conclusions. Authors concluded that although there is an upward trend in evidence to claim that there is a positive relation between TNF-α G-308A promoter polymorphisms and resolution of chronic HBV infection, due to many biases and limitations observed in reviewed studies, an organized well-designed study is needed for clarifying the real association.
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