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Asmaa C, Rachida R, Asma D, Louiza K, Souad C, Leila B, Ali B, Messaoud S, Dalila K, Fethi M, Nawel S, Malika A, Bachira M, Nabila A, Chafia TB, Habiba AAB. TNF-α -308A/G SNP association with kidney allograft rejection in Algerian population: A retrospective case-control study. Transpl Immunol 2023; 81:101927. [PMID: 37683737 DOI: 10.1016/j.trim.2023.101927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 08/29/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
No consensus has been reached regarding the association beween the -308A/G single nucleotide polymorphism (SNP) in the tumor necrosis factor-α gene (TNFA) and kidney allograft rejection (KAR). Our retrospective case-control study aimed to assess the association of the SNP with KAR in Algerian patients who underwent kidney transplantation. The study enrolled 313 Algerian patients: 58 kidney-transplant recipients without rejection events (PWoR); 58 kidney-transplant recipients with at least one rejection event, with or without graft loss (PWR); and 197 healthy individuals (HI). The TNFA -308A/G SNP was genotyped using a real-time polymerase chain reaction. The results demonstrated that, the frequencies of TNFA -308A allele and AA genotype were higher in the PWR than in the HI groups (p = 0.001, OR = 2.26, CI = 1.33-3.77 and p = 0.0004, OR = 5.53, CI-1.89-16.6, respectively). Furthermore, the frequencies were higher among the PWR than among the PWoR groups (p = 0.001, OR = 3.29, CI = 1.56-7.21 and p = 0.0006, OR = 28.26, CI = 1.62-493.2, respectively), particularly among PWR patients with de novo anti-human leukocyte antigens (HLA) antibodies (PG-a-HLA-Ab). However, the frequency of TNFA -308G allele was lower in the PWR group than in the PWoR group (p = 0.001, OR = 0.3, CI = 0.1-0.64) and the HI group (p = 0.001, OR = 0.44, CI = 0.27-0.44). Our results suggest an association of the TNFA -308A/G alleles with KAR in Algerian patients who underwent kidney transplantation. Carriers of TNFA -308A allele who have PG-a-HLA-Ab might have a higher risk, whereas TNFA -308G allele carriers could have a lower risk of KAR. Thus, therapeutic strategies can be adapted to minimize KAR risk in patients who have a genetic proclivity for increased pro-inflammatory TNF-α activity.
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Affiliation(s)
- Chebine Asmaa
- Cytokine and NO Synthase Team, Cellular and Molecular Biology Laboratory, Biological Sciences Faculty, University of Sciences and Technologies Houari Boumedienne (LBCM-FSB-USTHB), Algiers, Algeria
| | - Raache Rachida
- Cytokine and NO Synthase Team, Cellular and Molecular Biology Laboratory, Biological Sciences Faculty, University of Sciences and Technologies Houari Boumedienne (LBCM-FSB-USTHB), Algiers, Algeria
| | - Djendi Asma
- Transplantation and Immunogenetics Laboratory, Immunology Department, Pasteur Institute of Algeria, Algiers, Algeria
| | - Kaci Louiza
- Histological Analysis Laboratory, Algiers, Algeria
| | - Chelghoum Souad
- Department of Nephrology and Transplantation, Nafissa Hamoud Hospital, Algiers, Algeria
| | - Belkacemi Leila
- Department of Nephrology and Transplantation, Nafissa Hamoud Hospital, Algiers, Algeria
| | - Benziane Ali
- Department of Nephrology and Transplantation, Mohamed Amine Debbaghine Hospital, Algiers, Algeria
| | - Saidani Messaoud
- Department of Nephrology and Transplantation, Asaad Hassani Hospital, Algiers, Algeria
| | - Khemri Dalila
- Department of Nephrology and Transplantation, Mustapha Pacha Hospital, Algiers, Algeria
| | - Meҫabih Fethi
- Transplantation and Immunogenetics Laboratory, Immunology Department, Pasteur Institute of Algeria, Algiers, Algeria
| | - Salhi Nawel
- Transplantation and Immunogenetics Laboratory, Immunology Department, Pasteur Institute of Algeria, Algiers, Algeria
| | - Akachouche Malika
- Transplantation and Immunogenetics Laboratory, Immunology Department, Pasteur Institute of Algeria, Algiers, Algeria
| | - Mechti Bachira
- Transplantation and Immunogenetics Laboratory, Immunology Department, Pasteur Institute of Algeria, Algiers, Algeria
| | - Attal Nabila
- Immunology Department, Pasteur Institute of Algeria, Algiers, Algeria
| | - Touil-Boukoffa Chafia
- Cytokine and NO Synthase Team, Cellular and Molecular Biology Laboratory, Biological Sciences Faculty, University of Sciences and Technologies Houari Boumedienne (LBCM-FSB-USTHB), Algiers, Algeria
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Celik Y, Peker Y, Yucel-Lindberg T, Thelander T, Behboudi A. Association of TNF-α (-308G/A) Gene Polymorphism with Changes in Circulating TNF-α Levels in Response to CPAP Treatment in Adults with Coronary Artery Disease and Obstructive Sleep Apnea. J Clin Med 2023; 12:5325. [PMID: 37629366 PMCID: PMC10455347 DOI: 10.3390/jcm12165325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
RATIONALE We recently demonstrated that patients with coronary artery disease (CAD) and obstructive sleep apnea (OSA) carrying the tumor necrosis factor-alpha (TNF-α) A allele had increased circulating TNF-α levels compared with the ones carrying the TNF-α G allele. In the current study, we addressed the effect of TNF-α (-308G/A) gene polymorphism on circulating TNF-α levels following continuous positive airway pressure (CPAP) therapy. METHODS This study was a secondary analysis of the RICCADSA trial (NCT00519597) conducted in Sweden. CAD patients with OSA (apnea-hypopnea index) of ≥15 events/h and an Epworth Sleepiness Scale (ESS) score of <10 were randomized to CPAP or no-CPAP groups, and OSA patients with an ESS score of ≥10 were offered CPAP treatment. Blood samples were obtained at baseline and 12-month follow-up visits. TNF-α was measured by immunoassay (Luminex, R&D Systems). Genotyping of TNF-α-308G/A (single nucleotide polymorphism Rs1800629) was performed by polymerase chain reaction-restriction fragment length polymorphism. RESULTS In all, 239 participants (206 men and 33 women; mean age 64.9 (SD 7.7) years) with polymorphism data and circulating levels of TNF-α at baseline and 1-year follow-up visits were included. The median circulating TNF-α values fell in both groups between baseline and 12 months with no significant within- or between-group differences. In a multivariate linear regression model, a significant change in circulating TNF-α levels from baseline across the genotypes from GA to GA and GA to AA (standardized β-coefficient -0.129, 95% confidence interval (CI) -1.82; -0.12; p = 0.025) was observed in the entire cohort. The association was more pronounced among the individuals who were using the device for at least 4 h/night (n = 86; standardized β-coefficient -2.979 (95% CI -6.11; -1.21); p = 0.004)), whereas no significant association was found among the patients who were non-adherent or randomized to no-CPAP. The participants carrying the TNF-α A allele were less responsive to CPAP treatment regarding the decline in circulating TNF-α despite CPAP adherence (standardized β-coefficient -0.212, (95% CI -5.66; -1.01); p = 0.005). CONCLUSIONS Our results suggest that TNF-α (-308G/A) gene polymorphism is associated with changes in circulating TNF-α levels in response to CPAP treatment in adults with CAD and OSA.
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Affiliation(s)
- Yeliz Celik
- Department of Pulmonary Medicine, Koc University School of Medicine, and Koc University Research Center for Translational Medicine (KUTTAM), Koc University, 34010 Istanbul, Turkey;
| | - Yüksel Peker
- Department of Pulmonary Medicine, Koc University School of Medicine, and Koc University Research Center for Translational Medicine (KUTTAM), Koc University, 34010 Istanbul, Turkey;
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
- Department of Clinical Sciences, Respiratory Medicine and Allergology, Faculty of Medicine, Lund University, 22185 Lund, Sweden
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, and Harvard Medical School, Boston, MA 02115, USA
| | | | - Tilia Thelander
- Division of Biomedicine, School of Heath Sciences, University of Skövde, 54128 Skövde, Sweden; (T.T.); (A.B.)
| | - Afrouz Behboudi
- Division of Biomedicine, School of Heath Sciences, University of Skövde, 54128 Skövde, Sweden; (T.T.); (A.B.)
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Liu X, Liu D, Zhou S, Jiang W, Zhang J, Hu J, Liao G, Liao J, Guo Z, Li Y, Yang S, Li S, Chen H, Guo Y, Li M, Fan L, Li L, Zhao M, Liu Y. CARARIME: Interactive web server for comprehensive analysis of renal allograft rejection in immune microenvironment. Front Immunol 2022; 13:1026280. [DOI: 10.3389/fimmu.2022.1026280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/24/2022] [Indexed: 11/18/2022] Open
Abstract
BackgroundRenal transplantation is a very effective treatment for renal failure patients following kidney transplant. However, the clinical benefit is restricted by the high incidence of organ rejection. Therefore, there exists a wealth of literature regarding the mechanism of renal transplant rejection, including a large library of expression data. In recent years, research has shown the immune microenvironment to play an important role in renal transplant rejection. Nephrology web analysis tools currently exist to address chronic nephropathy, renal tumors and children’s kidneys, but no such tool exists that analyses the impact of immune microenvironment in renal transplantation rejection.MethodsTo fill this gap, we have developed a web page analysis tool called Comprehensive Analysis of Renal Allograft Rerejction in Immune Microenvironment (CARARIME).ResultsCARARIME analyzes the gene expression and immune microenvironment of published renal transplant rejection cohorts, including differential analysis (gene expression and immune cells), prognosis analysis (logistics regression, Univariable Cox Regression and Kaplan Meier), correlation analysis, enrichment analysis (GSEA and ssGSEA), and ROC analysis.ConclusionsUsing this tool, researchers can easily analyze the immune microenvironment in the context of renal transplant rejection by clicking on the available options, helping to further the development of approaches to renal transplant rejection in the immune microenvironment field. CARARIME can be found in http://www.cararime.com.
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Analysis of 75 Candidate SNPs Associated With Acute Rejection in Kidney Transplant Recipients: Validation of rs2910164 in MicroRNA MIR146A. Transplantation 2020; 103:1591-1602. [PMID: 30801535 PMCID: PMC6913779 DOI: 10.1097/tp.0000000000002659] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Identifying kidney allograft recipients who are predisposed to acute rejection (AR) could allow for optimization of clinical treatment to avoid rejection and prolong graft survival. It has been hypothesized that a part of this predisposition is caused by the inheritance of specific genetic variants. There are many publications reporting a statistically significant association between a genetic variant, usually in the form of a single-nucleotide polymorphism (SNP), and AR. However, there are additional publications reporting a lack of this association when a different cohort of recipients is analyzed for the same single-nucleotide polymorphism. METHODS In this report, we attempted to validate 75 common genetic variants, which have been previously reported to be associated with AR, using a large kidney allograft recipient cohort of 2390 European Americans and 482 African Americans. RESULTS Of those variants tested, only 1 variant, rs2910164, which alters the expression of the microRNA MIR146A, was found to exhibit a significant association within the African American cohort. Suggestive variants were found in the genes CTLA and TLR4. CONCLUSIONS Our results show that most variants previously reported to be associated with AR were not validated in our cohort. This shows the importance of validation when reporting the associations with complex clinical outcomes such as AR. Additional work will need to be done to understand the role of MIR146A in the risk of AR in kidney allograft recipients.
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Ebersole JL, Graves CL, Gonzalez OA, Dawson D, Morford LA, Huja PE, Hartsfield JK, Huja SS, Pandruvada S, Wallet SM. Aging, inflammation, immunity and periodontal disease. Periodontol 2000 2018; 72:54-75. [PMID: 27501491 DOI: 10.1111/prd.12135] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2015] [Indexed: 12/29/2022]
Abstract
The increased prevalence and severity of periodontal disease have long been associated with aging, such that this oral condition affects the majority of the adult population over 50 years of age. Although the immune system is a critical component for maintaining health, aging can be characterized by quantitative and qualitative modifications of the immune system. This process, termed 'immunosenescence', is a progressive modification of the immune system that leads to greater susceptibility to infections, neoplasia and autoimmunity, presumably reflecting the prolonged antigenic stimulation and/or stress responses that occur across the lifespan. Interestingly, the global reduction in the host capability to respond effectively to these challenges is coupled with a progressive increase in the general proinflammatory status, termed 'inflammaging'. Consistent with the definition of immunosenescence, it has been suggested that the cumulative effect of prolonged exposure of the periodontium to microbial challenge is, at least in part, a contributor to the effects of aging on these tissues. Thus, it has also been hypothesized that alterations in the function of resident immune and nonimmune cells of the periodontium contribute to the expression of inflammaging in periodontal disease. Although the majority of aging research has focused on the adaptive immune response, it is becoming increasingly clear that the innate immune compartment is also highly affected by aging. Thus, the phenomenon of immunosenescence and inflammaging, expressed as age-associated changes within the periodontium, needs to be more fully understood in this era of precision and personalized medicine and dentistry.
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Dorr CR, Oetting WS, Jacobson PA, Israni AK. Genetics of acute rejection after kidney transplantation. Transpl Int 2017; 31:263-277. [PMID: 29030886 DOI: 10.1111/tri.13084] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/07/2017] [Accepted: 10/09/2017] [Indexed: 01/02/2023]
Abstract
Treatment of acute rejection (AR) following kidney transplantation has improved in recent years, but there are still limitations to successful outcomes. This review article covers literature in regard to recipient and donor genetics of AR kidney and secondarily of liver allografts. Many candidate gene and some genome-wide association studies (GWASs) have been conducted for AR in kidney transplantation. Genetic associations with AR in kidney and liver are mostly weak, and in most cases, the associations have not been reproducible. A limitation in the study of AR is the lack of sufficiently large populations that account for population stratification to study the AR phenotype which in this era occurs in <10% of transplants. Furthermore, the AR phenotype has been difficult to define and the definitions of classifications have evolved over time. Literature related to the pharmacogenomics of tacrolimus is robust and has been validated in many studies. Associations between gene expression and AR are emerging as markers of outcomes and AR classification. In the future, combinations of pretransplant genotype for AR risk prediction, genotype-based immune suppressant dosing, and pharmacogenomic markers to select AR maintenance or treatment and expression markers from biopsies may provide valuable clinical tools for guiding treatment.
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Affiliation(s)
- Casey R Dorr
- Department of Nephrology, Minneapolis Medical Research Foundation, Minneapolis, MN, USA.,Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - William S Oetting
- Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Pamala A Jacobson
- Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Ajay K Israni
- Department of Nephrology, Minneapolis Medical Research Foundation, Minneapolis, MN, USA.,Department of Medicine, University of Minnesota, Minneapolis, MN, USA.,Department of Medicine, Hennepin County Medical Center, Minneapolis, MN, USA
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7
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Abstract
Over the last decade, several biomarkers and surrogate markers have surfaced as promising predictive markers of risk of rejection in solid organ transplantation. The monitoring of these markers can help to improve graft and recipient care by personalizing immunomodulatory therapies. The complex immune system response against an implanted graft can change during long-term follow-up, and the dynamic balance between effector and regulatory T-cell populations is a crucial factor in antidonor response, risk of rejection, and immunosuppression requirements. Therefore, at any time before and after transplantation, T-effector activity, which is associated with increased production and release of proinflammatory cytokines, can be a surrogate marker of the risk of rejection and need for immunosuppression. In addition, immunosuppressive drugs may have a different effect in each individual patient. The pharmacokinetics and pharmacodynamics of these drugs show high interpatient variability, and pharmacodynamic markers, strongly associated with the specific mechanism of action, can potentially be used to measure individual susceptibility to a specific immunosuppressive agent. The monitoring of a panel of valid biomarkers can improve patient stratification and the selection of immunosuppressive drugs. After transplantation, therapy can be adjusted based on the prediction of rejection episodes (maintained alloreactivity), the prognosis of allograft damage, and the individual's response to the drugs. This review will focus on current data indicating that changes in the T-cell production of the intracellular cytokines interferon-γ and interleukin-2 could be used to predict the risk of rejection and to guide immunosuppressive therapy in transplant recipients.
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Hu Q, Tian H, Wu Q, Li J, Cheng X, Liao P. Association Between Interleukin-2 -330 T/G Polymorphism and Acute Renal Graft Rejection: A Meta-analysis. Transplant Proc 2016; 47:1746-53. [PMID: 26293045 DOI: 10.1016/j.transproceed.2015.04.090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 04/28/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Interleukin-2 (IL-2) -330 T/G promoter polymorphism is involved in the acute rejection (AR) risk of kidney transplantation. However, results from published studies on the association between recipient IL-2-330 T/G polymorphism and AR risk are conflicting and inconclusive. METHODS We searched Medline, Embase, Web of Science, and Cochrane Central Register from their inceptions through January 2015 for relevant studies. Data concerning publication information, population characteristics, and transplant information were extracted. Odds ratios (ORs) were calculated for the association between IL-2-330 T/G polymorphism and AR risk. RESULTS This meta-analysis included 8 case-control studies with 1,405 cases of renal transplant recipients. The pooled estimate showed that IL-2-330 T/G polymorphism was not associated with AR risk: TT vs TG+GG: OR(fixed,) 0.93; 95% confidence interval [CI], 0.72-1.21; P = .60; GG vs TG+TT: OR(fixed), 1.15; 95% CI, 0.76-1.72; P = .51; TG vs TT+GG: OR(fixed), 1.01; 95% CI, 0.78-1.31; P = .91; T vs G: OR(fixed), 0.93; 95% CI, 0.77-1.13; P = .48. None of subgroup analyses yielded significant results in the association between IL-2-330 T/G polymorphism and AR risk. Meta-regression confirmed that there was no significant correlation between the preselected trial characteristics and our study results. CONCLUSIONS This meta-analysis suggests that IL-2-330 T/G polymorphism may not be associated with AR risk in renal transplant recipients.
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Affiliation(s)
- Q Hu
- Chongqing Center for Clinical Laboratory, Yuzhong, Chongqing, China; Department of Clinical Laboratory Medicine, Third People's Hospital of Chongqing, Yuzhong, Chongqing, China
| | - H Tian
- Chongqing Center for Clinical Laboratory, Yuzhong, Chongqing, China; Department of Clinical Laboratory Medicine, Third People's Hospital of Chongqing, Yuzhong, Chongqing, China
| | - Q Wu
- Chongqing Center for Clinical Laboratory, Yuzhong, Chongqing, China; Department of Clinical Laboratory Medicine, Third People's Hospital of Chongqing, Yuzhong, Chongqing, China
| | - J Li
- Chongqing Center for Clinical Laboratory, Yuzhong, Chongqing, China; Department of Clinical Laboratory Medicine, Third People's Hospital of Chongqing, Yuzhong, Chongqing, China
| | - X Cheng
- Department of Cardiology, Banan People's Hospital of Chongqing, Banan, Chongqing, China
| | - P Liao
- Chongqing Center for Clinical Laboratory, Yuzhong, Chongqing, China; Department of Clinical Laboratory Medicine, Third People's Hospital of Chongqing, Yuzhong, Chongqing, China.
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Stojanova J, Pouché L, Picard N. Genetic polymorphisms in the immune response: A focus on kidney transplantation. Clin Biochem 2016; 49:363-76. [DOI: 10.1016/j.clinbiochem.2015.07.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 07/04/2015] [Accepted: 07/08/2015] [Indexed: 02/06/2023]
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Pouché L, Stojanova J, Marquet P, Picard N. New challenges and promises in solid organ transplantation pharmacogenetics: the genetic variability of proteins involved in the pharmacodynamics of immunosuppressive drugs. Pharmacogenomics 2016; 17:277-96. [PMID: 26799749 DOI: 10.2217/pgs.15.169] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Interindividual variability in immunosuppressive drug responses might be partly explained by genetic variants in proteins involved in the immune response or associated with IS pharmacodynamics. On a general basis, the pharmacogenetics of drug target proteins is less known and understood than that of proteins involved in drug disposition pathways. The aim of this review is to facilitate research related to the pharmacodynamics of the main immunosuppressive drugs used in solid organ transplantation. We elaborated a quality of evidence grading system based on a literature review and identified 'highly recommended', 'recommended' or 'potential' candidates for further research. It is likely that a number of additional rare variants might further explain drug response phenotypes in transplantation, and particularly the most severe ones. The advent of next-generation sequencing will help to identify those variants.
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Affiliation(s)
- Lucie Pouché
- Inserm, UMR 850, 2 Avenue Martin-Luther King, F-87042 Limoges, France.,CHU Limoges, Department of Pharmacology, Toxicology & Pharmacovigilance, 2 Avenue Martin-Luther King, F-87042 Limoges, France
| | - Jana Stojanova
- Laboratory of Chemical Carcinogenesis & Pharmacogenetics, University of Chile, Santiago, Chile
| | - Pierre Marquet
- Inserm, UMR 850, 2 Avenue Martin-Luther King, F-87042 Limoges, France.,CHU Limoges, Department of Pharmacology, Toxicology & Pharmacovigilance, 2 Avenue Martin-Luther King, F-87042 Limoges, France.,Univ. Limoges, Faculty of Medicine & Pharmacy, 2 rue du Dr Marcland, F-87025 Limoges, France.,FHU SUPORT, 87000 Limoges, France
| | - Nicolas Picard
- Inserm, UMR 850, 2 Avenue Martin-Luther King, F-87042 Limoges, France.,CHU Limoges, Department of Pharmacology, Toxicology & Pharmacovigilance, 2 Avenue Martin-Luther King, F-87042 Limoges, France.,Univ. Limoges, Faculty of Medicine & Pharmacy, 2 rue du Dr Marcland, F-87025 Limoges, France.,FHU SUPORT, 87000 Limoges, France
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11
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Zhang HP, Zou J, Xie P, Gao F, Mu HJ. Association of HLA and cytokine gene polymorphisms with idiopathic pulmonary fibrosis. Kaohsiung J Med Sci 2015; 31:613-20. [DOI: 10.1016/j.kjms.2015.10.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 10/19/2015] [Accepted: 10/05/2015] [Indexed: 10/22/2022] Open
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Prakash S, Agrawal S, Kumar S, Prasad N. Impact of vascular endothelial growth factor single nucleotide polymorphism association on acute renal allograft rejection. Nephron Clin Pract 2015; 129:91-6. [PMID: 25659610 DOI: 10.1159/000368700] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 09/26/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Vascular endothelial growth factor (VEGF) is a cytokine which plays an important role in the division, proliferation and migration of endothelial cells. In the kidney, VEGF expression is found in glomerular podocytes and in tubular epithelial cells, which may result in acute inflammatory reactions. METHODS The role of VEGF gene polymorphisms (-2578 C/A, -2549 18 bp Ins/Del, -1154 G/A and +936 C/T) was investigated in 272 patients who underwent renal transplantation. ARMS-PCR and PCR-RFLP were used. Patients were categorized into acute allograft rejection (n = 76) and nonrejection (n = 196). RESULTS The VEGF -1154 GG genotype and the +936 T allele were found to be susceptible to acute rejection (AR). T-A-A-I, T-A-A-D, T-G-C-I and C-A-A-I haplotypes revealed a predisposition among AR cases. In silico analysis revealed +936 T as a significant allele involved in the transcription regulation. CONCLUSION These results highlight the role of VEGF polymorphisms in acute allograft rejection.
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Affiliation(s)
- Swayam Prakash
- Department of Medical Genetics, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
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Mu HJ, Xie P, Chen JY, Gao F, Zou J, Zhang J, Zhang B. Association of TNF-α, TGF-β1, IL-10, IL-6, and IFN-γ gene polymorphism with acute rejection and infection in lung transplant recipients. Clin Transplant 2014; 28:1016-24. [PMID: 24974875 DOI: 10.1111/ctr.12411] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Hui-jun Mu
- Department of Clinical Laboratory Science; Wuxi People's Hospital affiliated to Nanjing Medical University; Wuxi China
- Jiangsu Key laboratory of Organ Transplantation; Wuxi China
| | - Ping Xie
- Department of Clinical Laboratory Science; Wuxi People's Hospital affiliated to Nanjing Medical University; Wuxi China
- Jiangsu Key laboratory of Organ Transplantation; Wuxi China
| | - Jing-yu Chen
- Department of Thoracic Surgery; Wuxi People's Hospital affiliated to Nanjing Medical University; Wuxi China
| | - Fei Gao
- Department of Thoracic Surgery; Wuxi People's Hospital affiliated to Nanjing Medical University; Wuxi China
| | - Jian Zou
- Department of Clinical Laboratory Science; Wuxi People's Hospital affiliated to Nanjing Medical University; Wuxi China
- Jiangsu Key laboratory of Organ Transplantation; Wuxi China
| | - Ji Zhang
- Department of Thoracic Surgery; Wuxi People's Hospital affiliated to Nanjing Medical University; Wuxi China
| | - Bin Zhang
- Department of Clinical Laboratory Science; Wuxi People's Hospital affiliated to Nanjing Medical University; Wuxi China
- Jiangsu Key laboratory of Organ Transplantation; Wuxi China
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Karimi MH, Ebadi P, Pourfathollah AA. Association of cytokine/costimulatory molecule polymorphism and allograft rejection: a comparative review. Expert Rev Clin Immunol 2014; 9:1099-112. [PMID: 24168415 DOI: 10.1586/1744666x.2013.844462] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
One reason for genetic variations among human individuals is SNP which may confer diverse disease susceptibility or resistance in a population. Genetic variations in a key immunoregulatory agent can manifest various immunological responses, such as graft rejection. In fact, the outcome of organ transplantation can be impacted by several genetic causes including polymorphisms in genes encoding cytokines and costimulatory molecules in the donor or recipient. Thus, it can be helpful to contemplate the SNPs relating to these immunological determinants in order to achieve an improved transplantation therapy.
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Affiliation(s)
- Mohammad H Karimi
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Chen Z, Bouamar R, Van schaik RH, De Fijter JW, Hartmann A, Zeier M, Budde K, Kuypers DR, Weimar W, Hesselink DA, Van Gelder T. Genetic polymorphisms inIL-2,IL-10,TGF-β1, andIL-2RBand acute rejection in renal transplant patients. Clin Transplant 2014; 28:649-55. [DOI: 10.1111/ctr.12346] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2014] [Indexed: 01/05/2023]
Affiliation(s)
- Zhigang Chen
- Department of Hospital Pharmacy; Erasmus MC; Rotterdam The Netherlands
- Department of Hospital Pharmacy; Beijing Jishuitan Hospital; Beijing China
| | - Rachida Bouamar
- Department of Hospital Pharmacy; Erasmus MC; Rotterdam The Netherlands
| | | | - Johan W. De Fijter
- Department of Nephrology; Leiden University Medical Centre; Leiden The Netherlands
| | - Anders Hartmann
- Department of Transplant Medicine; Oslo University Hospital; Rikshospitalet Norway
| | - Martin Zeier
- Department of Nephrology; University of Heidelberg; Heidelberg Germany
| | - Klemens Budde
- Department of Nephrology; Charité University; Berlin Germany
| | | | - Willem Weimar
- Department of Internal Medicine; Erasmus MC; Rotterdam The Netherlands
| | | | - Teun Van Gelder
- Department of Hospital Pharmacy; Erasmus MC; Rotterdam The Netherlands
- Department of Internal Medicine; Erasmus MC; Rotterdam The Netherlands
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16
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Huijun M, Ji Z, Ping X, Jingyu C, Bin Z. Linkage Disequilibrium Between TNF-α-308 G/A Promoter and Histocompatibility Leukocyte Antigen Alleles in Han-Nationality Lung Transplant Recipients From Eastern China. EXP CLIN TRANSPLANT 2013; 11:264-9. [DOI: 10.6002/ect.2012.0099] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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17
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Nekooie-Marnany N, Saadat I, Karimi MH, Roozbeh J, Saadat M. Influence of GSTO2 (N142D) genetic polymorphism on acute renal rejection. Mol Biol Rep 2013; 40:4857-60. [PMID: 23649768 DOI: 10.1007/s11033-013-2584-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 04/29/2013] [Indexed: 10/26/2022]
Abstract
Acute renal allograft rejection remains an important problem following kidney transplantation. Several immunological and non-immunological factors intervene in renal graft rejection. Glutathione S-transferase super family is one of the important enzymes for biotransformation of both exogenous and endogenous xenobiotic compounds such as immunosuppressive drugs. The new class of this family is omega that includes two subunits GSTO1 and GSTO2. In this study 282 samples were collected from renal recipients of Namazi hospital in Shiraz-Iran during 2007-2010 years. Also 300 healthy samples as control group were collected from Shiraz population, included in our study. The primary outcome of this study was defined as biopsy-proven acute rejection during 1 year of renal transplantation. We applied polymerase chain reaction-restriction fragment length polymorphism method for determination of GSTO2 N142D polymorphism. Our result showed no significant association between GSTO2 polymorphism and acute rejection. Also this genetic variant has no significant effect with the risk of end stage renal disease. Cadaveric donor type for acute rejection significantly differed between acute rejection and non acute rejection patients (P=0.004). The combination effect of donor type and GSTO2 polymorphism indicates DD genotype with cadaver donor type increase risk of acute rejection (OR=3.82, 95% CI 1.80-12.37, P=0.02).
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Brunet M. Cytokines as predictive biomarkers of alloreactivity. Clin Chim Acta 2012; 413:1354-8. [DOI: 10.1016/j.cca.2012.04.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 03/29/2012] [Accepted: 04/11/2012] [Indexed: 10/28/2022]
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Oetting WS, Schladt DP, Leduc RE, Jacobson PA, Guan W, Matas AJ, Israni A. Validation of single nucleotide polymorphisms associated with acute rejection in kidney transplant recipients using a large multi-center cohort. Transpl Int 2011; 24:1231-8. [PMID: 21955043 DOI: 10.1111/j.1432-2277.2011.01359.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There have been numerous reports proposing a statistically significant association between a genetic variant, usually in the form of a single nucleotide polymorphism (SNP), and acute rejection (AR). Unfortunately, there are additional publications reporting a lack of association with AR when a different cohort of recipients was analyzed for the same SNP. The objective of this report was to attempt replication of these published finding in our own kidney allograft recipient cohort. We analyzed 23 genetic variants, previously reported to have a significant association with AR, using a cohort of 969 clinically well-defined kidney transplant recipients. Only one SNP, rs6025 (Leiden mutation), within the coagulation factor V gene, showed a significant association with a P-value of 0.011 in a race-adjusted analysis and a P-value of 0.0003 in multiple variable analysis. An additional SNP, rs11706052 in IMPDH2, gave a modest P-value of 0.044 using multiple variable analysis, which is not significant when multiple testing is taken into consideration. Our results suggest that careful validation of previously reported associations with AR is necessary, and different strategies other than candidate gene studies can help to identify causative genetic variants associated with AR.
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Affiliation(s)
- William S Oetting
- College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA.
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20
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Park S, Yoon Y, Kang S, Kim T, Kim Y, Joo H, Kim H, Jeong K, Lee D, Lee S, Chung J, Kim Y. Impact of IL2 and IL2RB Genetic Polymorphisms in Kidney Transplantation. Transplant Proc 2011; 43:2383-7. [DOI: 10.1016/j.transproceed.2011.06.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Hu X, Bai Y, Li S, Zeng K, Xu L, Liu Z, Song X, Lu X, Wang L, Ying B. Donor or recipient TNF-A −308G/A polymorphism and acute rejection of renal allograft: A meta-analysis. Transpl Immunol 2011; 25:61-71. [DOI: 10.1016/j.trim.2011.04.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Revised: 04/28/2011] [Accepted: 04/28/2011] [Indexed: 12/01/2022]
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22
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Garantziotis S, Palmer SM. Genetics and genomics in human lung transplantation. Expert Rev Respir Med 2010; 1:271-8. [PMID: 20477190 DOI: 10.1586/17476348.1.2.271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Lung transplantation is the only effective treatment for many advanced lung diseases. However, long-term survival after transplantation remains relatively poor, thus limiting the application of lung transplantation to patients with end-stage disease only. Acute and chronic rejection is the main reason for allograft failure. Attempts to treat or prevent rejection have been stymied by our incomplete understanding of the mechanisms leading to this devastating complication and the lack of representative animal models. A systems-biology approach to lung transplantation with the use of genomics and gene expression profiling has led to new insights into the pathogenesis of rejection, by elucidating the mechanisms of T-cell activation and uncovering the role of B cells and innate immunity. Systems-biology approaches, such as genetics and genomics, may allow minimally invasive diagnosis of rejection and permit individually tailored immunosuppressive regimens. Herein we review the emerging application of genomics and genetics to human lung transplantation and highlight the tremendous potential for these approaches to enhance clinical practice and augment our understanding of basic transplant biology.
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Affiliation(s)
- Stavros Garantziotis
- Duke University Medical Center, Duke Lung and Heart-Lung Transplant Center, Division of Pulmonary, Allergy and Critical Care Medicine, Durham, NC 27710, USA.
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23
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Manchanda PK, Kumar A, Sharma RK, Goel H, Mittal RD. Association of pro/anti-inflammatory cytokine gene variants in renal transplant patients with allograft outcome and cyclosporine immunosuppressant levels. Biologics 2009; 2:875-84. [PMID: 19707465 PMCID: PMC2727909 DOI: 10.2147/btt.s2459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
T-helper (Th) type 1/Th2 cytokines are key mediators in induction/effecter phases of all immune and inflammatory responses playing role in acute/chronic renal allograft rejection. Association studies lead to identification of patient risk profiles enabling individualization of level of immunosuppressions. We investigated the association of allograft rejection with interleukin-2 (IL-2), IL-4, IL-6, tumor necrosis factor-α (TNF-α) −308, transforming growth factor-β (TGF-β) (C-del, codon 10 and 25) gene variants in 184 renal transplant recipients and 180 controls. These cytokine genotypes were also evaluated with cyclosporine levels (C2) at one month in 135 stable recipients. High producing genotypes B1B1 of IL-4 and AA of TNF-α α308 showed significant association with rejection of allograft. The dose-adjusted C2 levels were significantly lower in patients with the high producing genotype T/T of IL-2 and heterozygous G/C of TGF-β codon 25 (P = 0.012 and 0.010, respectively). Haplotype frequencies were comparable in subjects for TGF-β codon-10 and 25. Combined inter-gene interaction showed high risk for rejection in recipients with high producing genotype B1B1 of IL-4 and AA of TNF-α and high TNF-α (AA) with low TGF-β (CC or Pro/Pro). In conclusion, association of IL-4 VNTR and TNF-α −308 suggested the involvement of these cytokines contributing to pathogenesis of allograft rejection. Recipients with TT genotype of IL-2 and GC of TGF-β codon 25 having low C2 levels may require higher cyclosporine dosage. Combined analysis of gene-gene interaction demonstrated synergistic effect of cytokines increasing risk for rejection. Thus, this information may help in pre-assessment of allograft outcome and to optimize cyclosporine therapy in post-transplant patients.
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Affiliation(s)
- Parmeet Kaur Manchanda
- Department of Urology and Renal Transplantation, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Raebareli Road, Lucknow 226014, Uttar Pradesh, India
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24
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Andresdottir MB, Haasnoot GW, Persijn GG, Claas FHJ. HLA-B8, DR3: a new risk factor for graft failure after renal transplantation in patients with underlying immunoglobulin A nephropathy. Clin Transplant 2009; 23:660-5. [PMID: 19674013 DOI: 10.1111/j.1399-0012.2009.01059.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The HLA-B8, DR3 haplotype has been associated with high immune reactivity. In this study, we have tested whether this haplotype has differential effect on graft survival in patients with IgAN compared with control patients. METHODS From the Eurotransplant Registry we analyzed graft survival of 1207 recipients with IgAN and 7935 control patients with non-glomerular diseases. Death-censored graft loss according to the HLA-B8, DR3 haplotype was calculated with Kaplan-Meier analysis and Cox-regression model was used to correct for various risk factors. RESULTS The frequency of the HLA-B8, DR3 haplotype was significantly lower in IgAN patients compared with controls (10.3% vs. 15.4%, p < 0.001). Ten-year graft survival was identical in the control group with and without the HLA-B8, DR3 haplotype (71.1% and 70.2%, respectively), but significantly worse in IgAN patients carrying the HLA-B8, DR3 haplotype compared with patients without it (52.5% vs. 69.1%, respectively, p = 0.009). The risk of graft loss was increased by 66% (HR 1.6, 95% CI 1.14, 2.29) in IgAN with the HLA-B8, DR3 haplotype and independent of well-known risk factors. CONCLUSIONS We have identified a new risk factor for graft loss unique to patients with IgAN. This finding emphasizes the exclusive immune characteristics of IgAN patients after transplantation.
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Affiliation(s)
- Margret B Andresdottir
- Department of Internal Medicine, Divison of Nephrology, Landspitali University Hospital, Reykjavik, Iceland.
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25
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Ernandez T, Mayadas TN. Immunoregulatory role of TNFalpha in inflammatory kidney diseases. Kidney Int 2009; 76:262-76. [PMID: 19436333 DOI: 10.1038/ki.2009.142] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tumor necrosis factor alpha (TNFalpha), a pleiotropic cytokine, plays important inflammatory roles in renal diseases such as lupus nephritis, anti-neutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis and renal allograft rejection. However, TNFalpha also plays critical immunoregulatory roles that are required to maintain immune homeostasis. These complex biological functions of TNFalpha are orchestrated by its two receptors, TNFR1 and TNFR2. For example, TNFR2 promotes leukocyte infiltration and tissue injury in an animal model of immune complex-mediated glomerulonephritis. On the other hand, TNFR1 plays an immunoregulatory function in a murine lupus model with a deficiency in this receptor that leads to more severe autoimmune symptoms. In humans, proinflammatory and immunoregulatory roles for TNFalpha are strikingly illustrated in patients on anti-TNFalpha medications: These treatments are greatly beneficial in certain inflammatory diseases such as rheumatoid arthritis but, on the other hand, are also associated with the induction of autoimmune lupus-like syndromes and enhanced autoimmunity in multiple sclerosis patients. The indication for anti-TNFalpha treatments in renal inflammatory diseases is still under discussion. Ongoing clinical trials may help to clarify the potential benefit of such treatments in lupus nephritis and ANCA-associated glomerulonephritis. Overall, the complex biology of TNFalpha is not fully understood. A greater understanding of the function of its receptors may provide a framework to understand its contrasting proinflammatory and immunoregulatory functions. This may lead the development of new, more specific anti-inflammatory drugs.
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Affiliation(s)
- Thomas Ernandez
- Department of Pathology, Center for Excellence in Vascular Biology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
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26
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Singh R, Kesarwani P, Ahirwar DK, Kapoor R, Mittal RD. Interleukin 8 −251T>A and Interferon gamma +874A>T polymorphism: Potential predictors of allograft outcome in renal transplant recipients from north India. Transpl Immunol 2009; 21:13-7. [DOI: 10.1016/j.trim.2009.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Revised: 12/26/2008] [Accepted: 01/09/2009] [Indexed: 11/25/2022]
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27
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Satoh S, Saito M, Inoue K, Miura M, Komatsuda A, Habuchi T. Association of cytokine polymorphisms with subclinical progressive chronic allograft nephropathy in Japanese renal transplant recipients: preliminary study. Int J Urol 2008; 14:990-4. [PMID: 17956522 DOI: 10.1111/j.1442-2042.2007.01886.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The present study calculated the risk of developing subclinical progressive chronic/sclerosing allograft nephropathy (CAN) under tacrolimus-based immunosuppression according to genetic polymorphisms of cytokines and growth factors, and clinical events including delayed graft function (DGF), acute rejection (AR) and cytomegalovirus (CMV) infection. METHODS The subjects were 50 recipients with stable graft function more than one year after renal transplantation. The criteria for subclinical progressive CAN were CAN grade 2 or 3 changes on Banff classification and stable serum creatinine (SCr) levels. Ten genetic polymorphisms were assessed. RESULTS Eleven patients (22.0%) developed progressive CAN. The mean ages and SCr levels of recipients with and without progressive CAN were 41.2 and 47.1 years, and 1.46 and 1.22 mg/dL, respectively. There were no significant differences in donor age, number of HLA mismatches, DGF or CMV infection. Although the rate of AR episode seemed to be greater in patients with subclinical progressive CAN, the difference did not reach significance (P = 0.093). The frequencies of the interleukin (IL)-2 T-330G TT genotype (P = 0.046) and IL-4 C-590T C allele (P = 0.092) were higher in patients with progressive CAN. In univariate analysis, the presence of IL-2 T-330G TT (OR 4.57, P = 0.044) was associated with CAN development. CONCLUSION The presence of IL-2 T-330G TT genotype may be a risk factor for CAN. Further studies with a large number of subjects and analyses of many cytokine polymorphisms would contribute to the ability to make prognostic determinations or tailor immunomodulatory regimens after renal transplantation.
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Affiliation(s)
- Shigeru Satoh
- Department of Urology, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan.
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28
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Breulmann B, Bantis C, Siekierka M, Blume C, Aker S, Kuhr N, Grabensee B, Ivens K. Influence of cytokine genes polymorphisms on long-term outcome in renal transplantation. Clin Transplant 2007; 21:615-21. [PMID: 17845635 DOI: 10.1111/j.1399-0012.2007.00697.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Recently, polymorphisms of cytokine genes have been associated with modified gene expression and increased cytokine production. We evaluated the influence of interleukin-10 (IL-10) gene G-1082A, tumour necrosis factor alpha (TNFalpha) gene G-308A and IL-6 gene G-174C polymorphisms on the rejection rate, renal function and long-term outcome in renal transplantation. PATIENTS AND METHODS We studied n = 224 consecutive patients, who underwent renal transplantation at our centre from 1998 to 2001 (cadaveric: n = 175, living related: n = 49) followed up for 4.9 +/- 2.0 yr and n = 100 healthy volunteers. IL-10 gene G-1082A, TNFalpha gene G-308A and IL-6 gene G-174C polymorphisms were determined by polymerase chain reaction (PCR) amplification. RESULTS The genotype distribution of the investigated polymorphisms was similar in patients and controls (ns). The age of donor and the recipient, the number of HLA mismatches and cold and warm ischemic time did not differ among patients with different genotypes (ns). No association between cytokine polymorphisms and the incidence of acute rejection episodes was detected (ns). The cytokine genotypes did not correlate with serum creatinine or creatinine clearance at any time during follow up (ns). Furthermore, there was no significant difference in the genotype frequencies among patients experiencing graft failure (ns). Patients with different cytokine gene polymorphisms showed similar outcomes in the Kaplan-Meier analysis of graft survival (ns). Finally, cytokine polymorphisms had no influence on the acute rejection rate or graft outcome also in the subgroup of HLA-DR mismatched grafts (ns). CONCLUSION Our results suggest that IL-10 gene G-1082A, TNFalpha gene G-308A and IL-6 gene G-174C polymorphisms are no major risk factors in renal transplantation.
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Affiliation(s)
- Bärbel Breulmann
- Department of Nephrology, Heinrich-Heine-University, Düsseldorf, Germany
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29
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Vielhauer V, Mayadas TN. Functions of TNF and its receptors in renal disease: distinct roles in inflammatory tissue injury and immune regulation. Semin Nephrol 2007; 27:286-308. [PMID: 17533007 DOI: 10.1016/j.semnephrol.2007.02.004] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tumor necrosis factor (TNF) alpha is a potent proinflammatory cytokine and important mediator of inflammatory tissue damage. In addition, it has important immune-regulatory functions. Many experimental studies and clinical observations support a role for TNF in the pathogenesis of acute and chronic renal disease. However, given its dual functions in inflammation and immune regulation, TNF may mediate both proinflammatory as well as immunosuppressive effects, particularly in chronic kidney diseases and systemic autoimmunity. Blockade of TNF in human rheumatoid arthritis or Crohn's disease led to the development of autoantibodies, lupus-like syndrome, and glomerulonephritis in some patients. These data raise concern about using TNF-blocking therapies in renal disease because the kidney may be especially vulnerable to the manifestation of autoimmune processes. Interestingly, recent experimental evidence suggests distinct roles for the 2 TNF receptors in mediating local inflammatory injury in the kidney and systemic immune-regulatory functions. In this review the biologic properties of TNF and its receptors, TNF receptors 1 and 2, relevant to kidney disease are summarized followed by a review of the available experimental and clinical data on the pathogenic role of the TNF system in nonimmune and immune renal diseases. Experimental evidence also is reviewed that supports a rationale for specifically blocking TNF receptor 2 versus anti-TNF therapies in some nephropathies, including immune complex-mediated glomerulonephritis.
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Affiliation(s)
- Volker Vielhauer
- Medizinische Poliklinik Innenstadt, Klinikum der Universität München, Ludwig-Maximilians-University, Munich, Germany.
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30
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Günesacar R, Opelz G, Erken E, Pelzl S, Döhler B, Ruhenstroth A, Süsal C. VEGF 936 C/T gene polymorphism in renal transplant recipients: association of the T allele with good graft outcome. Hum Immunol 2007; 68:599-602. [PMID: 17584582 DOI: 10.1016/j.humimm.2007.03.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2006] [Revised: 03/12/2007] [Accepted: 03/22/2007] [Indexed: 11/29/2022]
Abstract
We investigated the possible impact of vascular endothelial growth factor (VEGF) 936 C/T gene polymorphism on kidney graft outcome. DNA samples of 290 first deceased donor kidney graft recipients with well-functioning grafts and no rejection treatment during the first transplant year (WFG), 265 recipients with graft failure within the first transplant year (F), and 187 healthy control subjects were tested using the polymerase chain reaction restriction fragment length polymorphism technique. Although VEGF 936 CT genotype and T allele carrier frequencies in 555 kidney graft recipients did not differ significantly from frequencies observed in healthy control subjects, significantly higher frequencies were found in WFG patients (CT: 19.0%, T: 20.7%) than in F patients (CT: 11.7%, p=0.019; T: 12.8%, p=0.017, respectively). The VEGF 936 CT genotype and T allele appear to be associated with good outcome in renal transplantation and, if confirmed, might be helpful for the pretransplant identification of recipients with low risk of graft rejection.
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Affiliation(s)
- Ramazan Günesacar
- Department of Immunology and Rheumatology, Faculty of Medicine, University of Cukurova, Adana, Turkey.
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