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Hu X, Lu X. Association between interferon-gamma ( IFN-γ) gene polymorphisms and tuberculosis susceptibility: a systematic review and meta-analysis. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2023; 43:472-491. [PMID: 37874649 DOI: 10.1080/15257770.2023.2272641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 10/11/2023] [Indexed: 10/26/2023]
Abstract
Interferon-gamma (IFN-γ) has been established to play a pivotal role in the pathogenesis of tuberculosis (TB). Existing evidence suggests a potential association between the genetic poly-morphisms of IFN-γ and the susceptibility to TB. However, this association remains a topic of controversy. To address this knowledge gap, a meta-analysis was conducted to provide more accurate results regarding their relationship. The pooled odds ratio along with its corresponding 95% confidence interval was calculated using four different gene models. This analytical approach served to evaluate the strength of the association between single nucleotide polymorphisms (SNPs) and TB susceptibility. Additionally, we determined whether a fixed effect model or a random effect model should be applied based on the extent of heterogeneity. Egger's test was used to evaluate publication bias. This study included a total of nine studies, involving 4509 patients with TB and 4378 healthy controls. In non-Asian populations, a C > T mutation at polymorphic variant rs2069705 and a T > C mutation at rs2069718 was associated with an increased risk of TB. Conversely, among Asians, the variants rs2069705, rs2069718, and rs1861494 were not significantly associated with the risk of TB. Importantly, our investigation did not reveal any significant publication bias in the pooled results of the four gene models. In conclusion, this meta-analysis suggests that two SNPs in IFN-γ may be associated with TB susceptibility in non-Asian populations. However, for Asians, there is no evidence to support a conclusive relationship between these SNPs and the risk of TB.
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Affiliation(s)
- Xu Hu
- Department of Respiratory and Critical Care Medicine, The First People's Hospital of Ziyang, Ziyang, Sichuan, China
| | - Xiaoying Lu
- Department of Respiratory and Critical Care Medicine, The First People's Hospital of Ziyang, Ziyang, Sichuan, China
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Dhiman NS, Saini V, Kumar V. Association of single nucleotide polymorphisms of interferon-γ with pulmonary tuberculosis in population of Himachal Pradesh, India. Gene 2022; 823:146392. [PMID: 35248660 DOI: 10.1016/j.gene.2022.146392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 02/08/2022] [Accepted: 02/28/2022] [Indexed: 12/13/2022]
Abstract
Interferon-gamma (IFN-γ) plays an integral role in the host immunity against tuberculosis (TB). The gene encoding IFN-γ is polymorphic and several studies have reported the association of its genetic polymorphisms with TB in different populations of the world. The present study investigated the association of rs2069705 (C/T), rs1861494 (C/T), rs1861493 (A/G) and rs2069718 (C/T) single nucleotide polymorphisms (SNPs) of IFN-γ with pulmonary TB in a population of Himachal Pradesh, India. For present study, 210 pulmonary TB patients and 205 healthy controls (HCs) were recruited. The selected SNPs of IFN-γ were genotyped by amplification refractory mutation system-polymerase chain reaction (ARMS-PCR) and plasma IFN-γ levels were measured by ELISA. The 'T' allele of rs1861494 SNP was found to increase susceptibility to TB in the studied population (OR = 2.18, 95%CI = 1.57-3.03; p < 0.001). After stratifying the subjects on basis of sex, males with 'T' allele of rs2069718 SNP were found to be at higher risk to TB (OR = 1.55, 95%CI = 1.07-2.25; p = 0.02). We also found moderate linkage disequilibrium among the studied SNPs. The haplotypes C-T-A-T and T-T-G-T of rs2069705-rs1861494-rs1861493-rs2069718 were overrepresented in TB patients and found to increase susceptibility to TB (p = 0.012). The plasma IFN-γ levels in TB patients were around seven times higher in comparison to HCs (p < 0.0001). The HCs with genotype 'AA' of SNP rs1861493 were found with higher plasma IFN-γ levels than 'AG/GG' genotype (p = 0.023). In conclusion, the results suggest the association of rs1861494 (C/T) and rs2069718 (C/T) SNPs of IFN-γ with TB and genotype 'AA' of rs1861493 is associated with higher plasma IFN-γ levels in the population of Himachal Pradesh, India.
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Affiliation(s)
| | - Varinder Saini
- Department of Pulmonary Medicine, Government Medical College and Hospital, Sector-32, Chandigarh, India
| | - Vijay Kumar
- Department of Zoology, Panjab University, Chandigarh, India.
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Schurz H, Glanzmann B, Bowker N, van Toorn R, Solomons R, Schoeman J, van Helden PD, Kinnear CJ, Hoal EG, Möller M. Deciphering Genetic Susceptibility to Tuberculous Meningitis. Front Neurol 2022; 13:820168. [PMID: 35401413 PMCID: PMC8993185 DOI: 10.3389/fneur.2022.820168] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/03/2022] [Indexed: 11/13/2022] Open
Abstract
Tuberculous meningitis (TBM) is the most severe form of extrapulmonary tuberculosis (TB) that arises when a caseating meningeal granuloma discharges its contents into the subarachnoid space. It accounts for ~1% of all disease caused by Mycobacterium tuberculosis and the age of peak incidence is from 2-4 years. The exact pathogenesis of TBM is still not fully understood and the mechanism(s) by which the bacilli initially invade the blood-brain-barrier are still to be elucidated. This study investigated the involvement of the host genome in TBM susceptibility, by considering common variants (minor allele frequency (MAF) >5%) using microarray genotyping and rare variants (MAF <1%) via exome sequencing. A total of 123 TBM cases, 400 pulmonary TB (pTB) cases and 477 healthy controls were genotyped on the MEGA array. A genome-wide association study (GWAS) comparing 114 TBM cases to 395 healthy controls showed no association with TBM susceptibility. A second analysis comparing 114 TBM cases to 382 pTB cases was conducted to investigate variants associated with different TB phenotypes. No significant associations were found with progression from pTB to TBM. Ten TBM cases and 10 healthy controls were exome sequenced. Gene set association tests SKAT-O and SKAT Common Rare were used to assess the association of rare SNPs and the cumulative effect of both common and rare SNPs with susceptibility to TBM, respectively. Ingenuity Pathway Analysis (IPA) of the top-hits of the SKAT-O analysis showed that NOD2 and CYP4F2 are both important in TBM pathogenesis and highlighted these as targets for future study. For the SKAT Common Rare analysis Centriolar Coiled-Coil Protein 110 (CCP110) was nominally associated (p = 5.89x10-6) with TBM susceptibility. In addition, several top-hit genes ascribed to the development of the central nervous system (CNS) and innate immune system regulation were identified. Exome sequencing and GWAS of our TBM cohort has identified a single previously undescribed association of CCP110 with TBM susceptibility. These results advance our understanding of TBM in terms of both variants and genes that influence susceptibility. In addition, several candidate genes involved in innate immunity have been identified for further genotypic and functional investigation.
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Affiliation(s)
- Haiko Schurz
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Brigitte Glanzmann
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- SAMRC Genomics Centre, Cape Town, South Africa
| | - Nicholas Bowker
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Ronald van Toorn
- Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Regan Solomons
- Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Johan Schoeman
- Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Paul D. van Helden
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Craig J. Kinnear
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- SAMRC Genomics Centre, Cape Town, South Africa
| | - Eileen G. Hoal
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Marlo Möller
- DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
- Centre for Bioinformatics and Computational Biology, Stellenbosch University, Stellenbosch, South Africa
- *Correspondence: Marlo Möller
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Daulay RS, Saragih RAC, Daulay RM, Ganie RA, Tann G, Supriyatno B. Role of Interferon-Gamma +874 A/T Single-Nucleotide Polymorphism and Tuberculosis Susceptibility of Pediatric Population in North Sumatera, Indonesia. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.7441] [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: Tuberculosis (TB) remains to be a leading cause of morbidity and mortality worldwide. The immune defense against Mycobacterium tuberculosis (M. tuberculosis) is complicated. Interferon gamma (IFN-g) is the main cytokine involved in the immune response of TB. To date, the role of +874 A/T single nucleotide polymorphism (SNP) and TB disease susceptibility continue to be controversial.
OBJECTIVES: The aim of this study was to investigate the role of +874 A/T SNP and TB disease susceptibility of pediatric population in North Sumatera, Indonesia
METHODS: A case control study was conducted in Medan and Batubara, North Sumatera, Indonesia from January to December 2016. A total of 51 children with TB and 51 healthy controls were enrolled in this study. Subjects were 2 months to 14 years old age children diagnosed with TB and written informed consent from the parents or the caregivers to participate. Subjects were withdrawn from the study when immunodeficiency condition was found or suffered from other infection disease. DNA samples were obtained from all of the subjects. +874 A/T SNP was identified by performing the amplification refractory mutational system - polymerase chain reaction (ARMS-PCR) method. IFN-g levels were measured by using human enzyme-linked immunosorbent assay/ELISA. Data analysis was performed using chi square and Mann Whitney test. p value <0.05 was considered significant.
RESULTS: The result of this study reveals the presence of AA, AT and TT genotype in TB patients were 31 (60.8%), 20 (39.2%) and 0 (0%); respectively (p=0.023). Significant decreased production of IFN-g levels (p=0.042) were found in TB patients 9.41 (1.10 – 28.06) pg/ml.
CONCLUSION: Our study demonstrated significant evidence of the role of +874 A/T SNP and TB disease susceptibility of pediatric population in North Sumatera, Indonesia predominantly AA genotype. Significant decreased production of IFN-g reported among pediatric TB.
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Kaur G, Gupta K, Singh A, Kumar N, Banerjee I. Effect of IFN-γ +874 T/A polymorphism on clinical manifestations of dengue: a meta-analysis. J Genet 2021. [DOI: 10.1007/s12041-021-01344-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Darbeheshti F, Abolhassani H, Bashashati M, Ghavami S, Shahkarami S, Zoghi S, Gupta S, Orange JS, Ochs HD, Rezaei N. Coronavirus: Pure Infectious Disease or Genetic Predisposition. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1318:91-107. [PMID: 33973174 DOI: 10.1007/978-3-030-63761-3_6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes novel coronavirus disease (COVID-19), is the seventh pathogenic coronavirus recently discovered in December 2019 in Wuhan, China. To date, our knowledge about its effect on the human host remains limited. It is well known that host genetic factors account for the individual differences in the susceptibility to infectious diseases. The genetic susceptibility factors to COVID-19 and its severity are associated with several unanswered questions. However, the experience gained from an earlier strain of coronavirus, SARS-CoV-1, which shows 78% genetic similarity to SARS-CoV-2 and uses the same receptor to bind to host cells, could provide some clues. It, therefore, seems possible to assemble new evidence in order to solve a potential genetic predisposition puzzle for COVID-19. In this chapter, the puzzle pieces, including virus entry receptors, immune response, and inflammation-related genes, as well as the probable genetic predisposition models to COVID-19, are discussed.
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Affiliation(s)
- Farzaneh Darbeheshti
- Department of Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Medical Genetics Network (MeGeNe), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Hassan Abolhassani
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
- Primary Immunodeficiency Diseases Network (PIDNet), Universal Scientific Education and Research Network (USERN), Stockholm, Sweden
| | - Mohammad Bashashati
- Division of Gastroenterology, Department of Internal Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), El Paso, TX, USA
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
- Faculty of Medicine, Katowice School of Technology, Katowice, Poland
| | - Sepideh Shahkarami
- Medical Genetics Network (MeGeNe), Universal Scientific Education and Research Network (USERN), Tehran, Iran
- Gene center, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Samaneh Zoghi
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Sudhir Gupta
- Department of Medicine, Division of Basic and Clinical Immunology, University of California, Irvine, CA, USA
| | - Jordan S Orange
- Immunology, Allergy, and Rheumatology, Baylor College of Medicine and the Texas Children's Hospital, Houston, TX, USA
| | - Hans D Ochs
- School of Medicine, Department of Pediatrics, University of Washington, Seattle, WA, USA
- Universal Scientific Education and Research Network (USERN), Seattle, WA, USA
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
- Children's Medical Center Hospital, Tehran, Iran.
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Hassuna NA, El Feky M, Hussein AARM, Mahmoud MA, Idriss NK, Abdelwahab SF, Ibrahim MA. Interleukin-18 and interferon-γ single nucleotide polymorphisms in Egyptian patients with tuberculosis. PLoS One 2021; 16:e0244949. [PMID: 33412574 PMCID: PMC7790531 DOI: 10.1371/journal.pone.0244949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/19/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Interleukin-18 (IL-18) and interferon-γ (IFN-γ) are cytokines of crucial role in inflammation and immune reactions. There is a growing evidence supporting important roles for IL-18 and IFN γ in tuberculosis (TB) infection and anti-tuberculosis immunity. OBJECTIVE To evaluate the role of polymorphisms in IL-18-607 and -137 and INF-γ +874 in susceptibility to TB infection among Egyptian patients. METHODS A case control study was conducted to investigate the polymorphism at IL-18-607, -137 and INF-γ+874 by sequence specific primer-polymerase chain reaction (SSP- PCR) in 105 patients with pulmonary and extra pulmonary tuberculosis and 106 controls. RESULTS A significant protective effect against TB was found in homozygous CC genotype at IL-18 -137G/C, in addition to a 7-fold risk with GG and GC genotypes in the recessive model. Apart from a decreased risk with the AC genotype, no association was detected between the susceptibility to TB and different genotypes or alleles at the IL-18 -607A/C site. The homozygous AA genotype in INF-γ+874 showed a significant higher risk to TB than the homozygous TT or heterozygous AT genotypes with nearly a 2-fold risk of TB infection with the A allele. Regarding haplotype association, the GC haplotype was strongly associated with TB infection compared to other haplotypes. CONCLUSION These findings suggest; for the first time in Egypt; a significant risk to TB infection with SNP at the IL-18-137G/C with no LD with SNP at the IL-18-607 site. The homozygous AA genotype in INF-γ+874 showed a significant higher risk to TB than the homozygous TT or heterozygous AT genotypes.
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Affiliation(s)
- Noha A. Hassuna
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, Egypt
- * E-mail:
| | - Mohamed El Feky
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | | | - Manal A. Mahmoud
- Department of Chest Diseases and Tuberculosis, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Naglaa K. Idriss
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Sayed F. Abdelwahab
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, Egypt
- Division of Pharmaceutical Microbiology, Department of Pharmaceutics and Industrial Pharmacy, Taif College of Pharmacy, Taif University, Taif, Saudi Arabia
| | - Maggie A. Ibrahim
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
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Areeshi MY, Mandal RK, Dar SA, Jawed A, Wahid M, Lohani M, Panda AK, Mishra B, Akhter N, Haque S. IFN-γ +874 A>T (rs2430561) gene polymorphism and risk of pulmonary tuberculosis: a meta-analysis. Arch Med Sci 2021; 17:177-188. [PMID: 33488870 PMCID: PMC7811310 DOI: 10.5114/aoms.2019.88481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 10/15/2017] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION The role of interferon gamma (IFN-γ) +874 A>T (rs2430561) gene polymorphism has been evaluated in different ethnicities with pulmonary tuberculosis (PTB) infection, and inconsistent results have been reported. In this study, a meta-analysis was performed to determine the precise association between IFN-γ +874 A>T gene polymorphism and PTB susceptibility. MATERIAL AND METHODS A total of 21 studies comprising 4281 confirmed PTB cases and 5186 healthy controls were included in this meta-analysis by searching the PubMed (Medline), EMBASE, and Google Scholar web-databases. RESULTS We observed reduced risk of PTB in allelic contrast (T vs. A: p = 0.001; OR = 0.818, 95% CI: 0.723-0.926), homozygous (TT vs. AA: p = 0.017; OR = 0.715, 95% CI: 0.543-0.941), heterozygous (AT vs. AA: p = 0.002; OR = 0.782, 95% CI: 0.667-0.917), dominant (TT+AT vs. AA: p = 0.002; OR = 0.768, 95% CI: 0.652-0.906), and recessive (TT vs. AA+AT: p = 0.042; OR = 0.802, 95% CI: 0.649-0.992) genetic models. In ethnicity-wise subgroup analysis, reduced risk of PTB was found in the Caucasian population. However, we did not find an association with any of the genetic models in the Asian population. CONCLUSIONS In conclusion, the IFN-γ +874 A>T gene polymorphism is significantly associated with reduced risk of PTB, showing a protective effect in the overall and in the Caucasian population. However, this polymorphism is not associated with PTB risk in the Asian population.
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Affiliation(s)
- Mohammed Y. Areeshi
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, Saudi Arabia
| | - Raju K. Mandal
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, Saudi Arabia
| | - Sajad A. Dar
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, Saudi Arabia
- The University College of Medical Sciences and GTB Hospital (University of Delhi), Delhi, India
| | - Arshad Jawed
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, Saudi Arabia
| | - Mohd Wahid
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, Saudi Arabia
| | - Mohtashim Lohani
- Department of Emergency Medical Services, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Aditya K. Panda
- Centre for Life Sciences, Central University of Jharkhand, Ranchi, Jharkhand, India
| | - B.N. Mishra
- Department of Biotechnology, Institute of Engineering and Technology, Lucknow, Uttar Pradesh, India
| | - Naseem Akhter
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Albaha University, Albaha, Saudi Arabia
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, Saudi Arabia
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Naz A, Ali M, Aslam MA, Khan AUH, Manzoor H, Iqbal R, Shehzad MA, Ahmad S, Shaheen Z, Rasul S. Influence of single-nucleotide polymorphisms in the IFNG towards susceptibility to tuberculosis in a Pakistani population. Ann Hum Genet 2019; 83:426-433. [PMID: 31069794 DOI: 10.1111/ahg.12325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 03/13/2019] [Accepted: 04/24/2019] [Indexed: 11/27/2022]
Abstract
Tuberculosis (TB) is a global issue as one-third of the population worldwide is considered to be infected. TB has become a critical public health problem as a result of increasing drug resistance, which poses a challenge to current control strategies. Similar to environmental factors, genetic makeup of the host equally contributes to disease onset. We performed genotypic analysis to examine the relationship between IFNG and TB onset and drug resistance in a Pakistani population comprising 689 subjects. Notable differences were observed in the IFNG polymorphism (+874T/A) between the case and control groups. The frequency of the wild-type genotype (TT) in the controls (43.2%) was significantly higher than in the cases (25.3%) (odds ratio [OR] = 0.77, p < 0.0001), while the mutant genotype frequency (AA) (38.57%) in the cases was significantly higher than in the controls (22.6%) (OR = 1.46, p < 0.0001). The heterozygous genotype frequency (TA) did not significantly differ between the control and case groups. Compared with the controls, the variant allele (A) was approximately twice as frequent in the cases. Females and older people have a higher chance of disease development. Finally, the IFNG (+874T/A) polymorphism was not associated with drug sensitivity or resistance. However, a genotypic polymorphism of IFNG (+874T/A) was significantly associated with susceptibility to TB, and the T allele conferred protection against TB. Additional studies involving larger cohorts are needed to further explore this relationship between genetics and disease vulnerability.
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Affiliation(s)
- AsmaGul Naz
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Ali
- Government College University, Faisalabad, Pakistan
| | - Muhammad Assad Aslam
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Pakistan
| | - Abrar Ul Haq Khan
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | - Hamid Manzoor
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Pakistan
| | - Rehana Iqbal
- Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan, Pakistan
| | | | - Shahbaz Ahmad
- Provincial TB Reference Laboratory, Nishtar Medical University, Multan, Pakistan
| | - Zubair Shaheen
- Pulmonology Department, Nishtar Medical University, Multan, Pakistan
| | - Sumaira Rasul
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, Pakistan
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Mandal RK, Wahid M, Jawed A, Dar SA, Panda AK, Akhter N, Lohani M, Mishra BN, Khan S, Areeshi MY, Haque S. A trial sequential meta-analysis of IFN-γ +874 A>T (rs2430561) gene polymorphism and extrapulmonary tuberculosis risk. Microb Pathog 2019; 130:1-9. [PMID: 30825502 DOI: 10.1016/j.micpath.2018.12.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 12/14/2018] [Accepted: 12/15/2018] [Indexed: 12/29/2022]
Abstract
Interferon-γ (IFN-γ) plays a crucial role in immunological responses against Mycobacterium tuberculosis (M.tb) infection. The polymorphism at +874 A > T (rs2430561) influences the levels of IFN-γ, which may further influence the susceptibility to extrapulmonary tuberculosis (EPTB). This polymorphism has been investigated with respect to EPTB occurrence in different populations and provided contradictory and conflicting results. This study was performed to meta-statistically analyze the data and draw a more accurate conclusion regarding the association of IFN-γ +874 A > T gene polymorphism and EPTB susceptibility. A quantitative synthesis was executed for the pertinent studies retrieved from online web-databases viz. Google Scholar, PubMed/Medline and EMBASE. The pooled odds ratios (ORs) and confidence intervals (95% CIs) were estimated for all the genetic models by meta-analysis. A total of eight studies were retrieved which included 762 confirmed EPTB cases and 1341 controls. The meta-analysis results revealed reduced association of EPTB in allelic contrast (T vs. A: p = 0.001; OR = 0.668, 95% CI = 0.524 to 0.850), homozygous (TT vs. AA: p = 0.017; OR = 0.450, 95% CI = 0.234 to 0.868), heterozygous (AT vs. AA: p = 0.004; OR = 0.574, 95% CI = 0.395 to 0.835), dominant (TT + AT vs. AA: p = 0.003; OR = 0.536, 95% CI = 0.354 to 0.810) and recessive (TT vs. AA + AT: p = 0.039; OR = 0.662, 95% CI = 0.448 to 0.980) genetic models. Furthermore, re-sampling statistics also revealed reduced risk of EPTB in overall population and Asian subgroup. This meta-analysis concluded that IFN-γ +874 A > T gene polymorphism is meaningfully related with the reduced EPTB risk in overall and Asian population, and further necessitates larger studies to be conducted on this topic in other races.
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Affiliation(s)
- Raju K Mandal
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - Mohd Wahid
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - Arshad Jawed
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - Sajad A Dar
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - Aditya K Panda
- Centre for Life Sciences, Central University of Jharkhand, Ranchi, 835205, Jharkhand, India
| | - Naseem Akhter
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Albaha University, Albaha, 65431, Saudi Arabia
| | - Mohtashim Lohani
- Department of Emergency Medical Services, College of Applied Medical Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - B N Mishra
- Department of Biotechnology, Institute of Engineering & Technology, Lucknow, 226021, Uttar Pradesh, India
| | - Saif Khan
- Department of Basic Sciences, College of Dentistry, University of Ha'il, Hail, 2440, Saudi Arabia
| | - Mohammed Y Areeshi
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia.
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11
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Population genetic evidence for positive and purifying selection acting at the human IFN-γ locus in Africa. Genes Immun 2018; 20:143-157. [PMID: 29599512 DOI: 10.1038/s41435-018-0016-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 01/22/2018] [Accepted: 01/26/2018] [Indexed: 01/09/2023]
Abstract
Despite its critical role in the defense against microbial infection and tumor development, little is known about the range of nucleotide and haplotype variation at IFN-γ, or the evolutionary forces that have shaped patterns of diversity at this locus. To address this gap in knowledge, we examined sequence data from the IFN-γ gene in 1461 individuals from 15 worldwide populations. Our analyses uncovered novel patterns of variation in distinct African populations, including an excess of high frequency-derived alleles, unusually long haplotype structure surrounding the IFN-γ gene, and a "star-like" genealogy of African-specific haplotypes carrying variants previously associated with infectious disease. We also inferred a deep time to coalescence of variation at IFN-γ (~ 0.8 million years ago) and ancient ages for common polymorphisms predating the evolution of modern humans. Taken together, these results are congruent with a model of positive selection on standing variation in African populations. Furthermore, we inferred that common variants in intron 3 of IFN-γ are the likely targets of selection. In addition, we observed a paucity of non-synonymous substitutions relative to synonymous changes in the exons of IFN-γ in African and non-African populations, suggestive of strong purifying selection. Therefore, we contend that positive and purifying selection have influenced levels of diversity in different regions of IFN-γ, implying that these distinct genic regions are, or have been, functionally important. Overall, this study provides additional insights into the evolutionary events that have contributed to the frequency and distribution of alleles having a role in human health and disease.
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12
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Li J, Zhou Y, Zhang H, He D, Zhang R, Li Y, Guo C, Guo Q, Wang L, Yang G, Gao Q. Association of IFNG gene polymorphisms with pulmonary tuberculosis but not with spinal tuberculosis in a Chinese Han population. Microb Pathog 2017; 111:238-243. [PMID: 28867622 DOI: 10.1016/j.micpath.2017.08.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 08/25/2017] [Accepted: 08/30/2017] [Indexed: 12/11/2022]
Abstract
Spinal tuberculosis (STB) is an extrapulmonary form of tuberculosis (TB) caused by Mycobacterium tuberculosis (Mtb), which accounts for around 2% of all TB cases and can lead to spine degeneration. It is widely accepted that host genetic factors participate in the pathogenesis of active TB, but the factors controlling which TB form will manifest after Mtb infection remain unknown. We hypothesized that a genetic difference may exist between the development of STB and pulmonary tuberculosis (PTB). Here, three single nucleotide polymorphisms (SNPs) in the IFNG gene (rs2069718), IRGM gene (rs10065172), and MBL2 gene (rs11003125) were genotyped among 183 PTB patients, 177 STB patients, and 360 healthy controls from the Chinese Han population. We found that rs2069718 genotypes were significantly associated with PTB (TT, p = 0.007; CT, p = 0.008) but not STB, and the TT genotype (p = 0.046) of rs2069718 were less common in PTB than in STB. In contrast, neither PTB nor STB were found to be associated with rs10065172 and rs11003125. Overall, we found a difference in the rs2069718 genetic distribution between the STB and PTB patients in a Chinese Han population. The rs2069718 TT genotype was associated with a protective role in PTB but not STB development during active Mtb infection.
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Affiliation(s)
- Jiong Li
- Department of Spine Surgery, Xiangya Spinal Surgery Center, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Ying Zhou
- Department of Clinical Laboratory, The People's Hospital of Guangxi Autonomous Region, Nanning 530021, People's Republic of China
| | - Hongqi Zhang
- Department of Spine Surgery, Xiangya Spinal Surgery Center, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Dan He
- Department of Neurology, The First Hospital of Changsha, Changsha 410005, People's Republic of China
| | - Rongmou Zhang
- Department of Orthopedics, The Second Affiliated Hospital, Fujian Medical University, Quanzhou 362000, People's Republic of China
| | - Yanbing Li
- Department of Clinical Laboratory, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Chaofeng Guo
- Department of Spine Surgery, Xiangya Spinal Surgery Center, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Qiang Guo
- Department of Spine Surgery, Xiangya Spinal Surgery Center, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Longjie Wang
- Department of Spine Surgery, Xiangya Spinal Surgery Center, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Guanteng Yang
- Department of Spine Surgery, Xiangya Spinal Surgery Center, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Qile Gao
- Department of Spine Surgery, Xiangya Spinal Surgery Center, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China.
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13
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Wei Z, Wenhao S, Yuanyuan M, Yang L, Daming Z, Jiangchun X, Jijun J. A single nucleotide polymorphism in the interferon-γ gene ( IFNG +874 T/A) is associated with susceptibility to tuberculosis. Oncotarget 2017; 8:50415-50429. [PMID: 28881572 PMCID: PMC5584145 DOI: 10.18632/oncotarget.17304] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Accepted: 03/30/2017] [Indexed: 11/25/2022] Open
Abstract
Interferon-γ (Interferon gamma, IFNG) is an important cytokine involved in providing resistance to mycobacterial diseases. Common variants of IFNG, such as IFNG +874 T/A(rs2430561), may be related to tuberculosis susceptibility, but this association has not been consistently observed. We performed an updated meta-analysis to evaluate the association between the IFNG +874 T/A (rs2430561) polymorphism and tuberculosis susceptibility. PubMed and SinoMed databases were searched up to October 2016, and odds ratios (OR) and 95% confidence intervals (CI) were used to assess the association strength. Based on search criteria for manuscripts reporting tuberculosis susceptibility and its relationship with the IFNG +874 T/A(rs2430561)polymorphism, 42 case-control studies from 39 different articles were retrieved. Significantly positive, decreased, and protective associations were found between the IFNG +874 T/A(rs2430561)polymorphism and tuberculosis risk in five genetic models. Moreover, in the stratified subgroup analysis, a protective relationship was detected in four different ethnicities and sources of the control groups. Furthermore, the IFNG +874 T/A(rs2430561)polymorphism played an important role in protecting individuals from both pulmonary tuberculosis and extra-pulmonary tuberculosis. Our meta-analysis suggests that the IFNG +874 T/A(rs2430561)polymorphism is potentially associated with tuberculosis susceptibility and may be used as a predictive biomarker. Further studies with larger sample sizes and consideration of gene-environment interactions should be conducted to elucidate the role of IFNG +874 T/A(rs2430561) polymorphism in tuberculosis susceptibility.
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Affiliation(s)
- Zhang Wei
- Department of Infectious Disease, Taizhou People's Hospital, Taizhou, China
| | - Shen Wenhao
- Department of Oncology, Taizhou People's Hospital, Taizhou, China
| | - Mi Yuanyuan
- Department of Urology, Third Affiliated Hospital of Nantong University, Wuxi, China
| | - Li Yang
- Department of Infectious Disease, Taizhou People's Hospital, Taizhou, China
| | - Zhou Daming
- Department of Infectious Disease, Taizhou People's Hospital, Taizhou, China
| | - Xian Jiangchun
- Department of Infectious Disease, Taizhou People's Hospital, Taizhou, China
| | - Jiang Jijun
- Department of Infectious Disease, Taizhou People's Hospital, Taizhou, China
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14
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Thada S, Ponnana M, Sivangala R, Joshi L, Alasandagutti M, Ansari MSS, Schumann RR, Valluri V, Gaddam S. Polymorphisms of IFN-γ (+874A/T) and IL-12 (+1188A/C) in tuberculosis patients and their household contacts in Hyderabad, India. Hum Immunol 2016; 77:559-65. [PMID: 27108964 DOI: 10.1016/j.humimm.2016.04.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 04/12/2016] [Accepted: 04/20/2016] [Indexed: 01/27/2023]
Abstract
Several cytokine gene variants have shown to be associated with host susceptibility to infectious diseases including tuberculosis (TB). High rates of transmission were identified within household members of TB patients. In this study, we examined whether single nucleotide polymorphisms of IFN-γ +874A/T and IL-12 +1188A/C affect susceptibility to TB. Genomic DNA from patients with active disease, their household contacts HHC and healthy controls HC was genotyped for IFN-γ +874A/T and IL-12 +1188A/C SNPs by amplification refractory mutation system-polymerase chain reaction (ARMS-PCR). IFN-γ +874 AA and AT genotypes were significantly with different frequencies in patients and total HHC as compared to HC (p<0.0001). In patients IL-12 +1188 AC and CC genotypes were associated with TB (p<0.003, p<0.008). In total HHC AC, CC genotypes and both alleles (A&C) were significantly different as compared to HC (p<0.004, p<0.001, p<0.034) and the same result was obtained when HHC were stratified into related (p<0.02, p<0.001) and unrelated (p<0.009, p<0.017) individuals. Allelic frequencies, however, were significant only in related contacts (p<0.021). Generalized multifactor dimensionality reduction method (GMDR) testing revealed high risk combinations of several genotypes in IFN-γ & IL-12 genes. Our findings suggest an important role of genetic variations of IFN-γ and IL-12 for susceptibility to TB.
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Affiliation(s)
- Shruthi Thada
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Andhra Pradesh, India; Institute for Microbiology and Hygiene, Charite University Medical Center, Berlin, Germany
| | - Meenakshi Ponnana
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Andhra Pradesh, India
| | - Ramya Sivangala
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Andhra Pradesh, India
| | - Lavanya Joshi
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Andhra Pradesh, India
| | | | | | - Ralf R Schumann
- Institute for Microbiology and Hygiene, Charite University Medical Center, Berlin, Germany
| | - Vijayalakshmi Valluri
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Andhra Pradesh, India; LEPRA India - Blue Peter Public Health & Research Centre, Cherlapally, Hyderabad, Andhra Pradesh, India
| | - Sumanlatha Gaddam
- Bhagwan Mahavir Medical Research Centre, Hyderabad, Andhra Pradesh, India; Department of Genetics, Osmania University Hyderabad, Telangana, India.
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15
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Redlich R, Stacey D, Opel N, Grotegerd D, Dohm K, Kugel H, Heindel W, Arolt V, Baune BT, Dannlowski U. Evidence of an IFN-γ by early life stress interaction in the regulation of amygdala reactivity to emotional stimuli. Psychoneuroendocrinology 2015; 62:166-73. [PMID: 26313134 DOI: 10.1016/j.psyneuen.2015.08.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 07/28/2015] [Accepted: 08/05/2015] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Since numerous studies have found that exposure to early life stress leads to increased peripheral inflammation and psychiatric disease, it is thought that peripheral immune activation precedes and possibly mediates the onset of stress-associated psychiatric disease. Despite early studies, IFNγ has received little attention relative to other inflammatory cytokines in the context of the pathophysiology of affective disorders. Neuroimaging endophenotypes have emerged recently as a promising means of elucidating these types of complex relationships including the modeling of the interaction between environmental factors and genetic predisposition. Here we investigate the GxE relationship between early-life stress and genetic variants of IFNγ on emotion processing. METHODS To investigate the impact of the relationship between genetic variants of IFNγ (rs1861494, rs2069718, rs2430561) and early life stress on emotion processing, a sample of healthy adults (n=409) undergoing an emotional faces paradigm in an fMRI study were genotyped and analysed. Information on early life stress was obtained via Childhood Trauma Questionnaire (CTQ). RESULTS A positive association between early life stress and amygdala reactivity was found. Specifically, the main effect of genotype of rs1861494 on amygdala reactivity indicates a higher neural response in C allele carriers compared to T homozygotes, while we did not find main effects of rs2069718 and rs2430561. Importantly, interaction analyses revealed a specific interaction between IFNγ genotype (rs1861494) and early life stress affecting amygdala reactivity to emotional faces, resulting from a positive association between CTQ scores and amygdala reactivity in C allele carriers while this association was absent in T homozygotes. CONCLUSIONS Our findings indicate that firstly the genetic variant of IFNγ (rs1861494) is involved with the regulation of amygdala reactivity to emotional stimuli and secondly, that this genetic variant moderates effects of early life stress on emotion processing. These findings reiterate the importance that inflammatory genes play in the interaction with early life stress and the regulation of emotion processing.
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Affiliation(s)
- Ronny Redlich
- Department of Psychiatry, University of Münster, Germany.
| | - David Stacey
- Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia
| | - Nils Opel
- Department of Psychiatry, University of Münster, Germany
| | | | - Katharina Dohm
- Department of Psychiatry, University of Münster, Germany
| | - Harald Kugel
- Department of Clinical Radiology, University of Münster, Germany
| | - Walter Heindel
- Department of Clinical Radiology, University of Münster, Germany
| | - Volker Arolt
- Department of Psychiatry, University of Münster, Germany
| | - Bernhard T Baune
- Discipline of Psychiatry, School of Medicine, University of Adelaide, Australia
| | - Udo Dannlowski
- Department of Psychiatry, University of Münster, Germany; Department of Psychiatry, University of Marburg, Germany
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16
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Smith NLD, Denning DW. Clinical implications of interferon-γ genetic and epigenetic variants. Immunology 2015; 143:499-511. [PMID: 25052001 DOI: 10.1111/imm.12362] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 07/15/2014] [Accepted: 07/18/2014] [Indexed: 12/25/2022] Open
Abstract
Interferon-γ (IFN-γ) is an integral and critical molecule of the immune system, with multiple functions, mostly related to the T helper type 1 (Th1) response to infection. It is critical for defence against mycobacterial infection and is of increasing interest in defence against fungi. In this article, we review the genetic and epigenetic variants affecting IFN-γ expression and investigate its role in disease, with an emphasis on fungal diseases such as invasive and chronic pulmonary aspergillosis. Over 347 IFN-γ gene variants have been described, in multiple ethnic populations. Many appear to confer a susceptibility to disease, especially tuberculosis (TB) and hepatitis, but also some non-infectious conditions such as aplastic anaemia, cervical cancer and psoriasis. Several epigenetic modifications are also described, increasing IFN-γ expression in Th1 lymphocytes and reducing IFN-γ expression in Th2 lymphocytes. Recombinant IFN-γ administration is licensed for the prophylaxis of infection (bacterial and fungal) in patients with the phagocyte functional deficiency syndrome chronic granulomatous disease, although the benefits appear limited. Interferon-γ therapy is given to patients with profound defects in IFN-γ and interleukin-12 production and appears to be beneficial for patients with invasive aspergillosis and cryptococcal meningitis, but the studies are not definitive. A high proportion of patients with chronic pulmonary aspergillosis are poor producers of IFN-γ in response to multiple stimuli and could also benefit from IFN-γ administration. The investigation and management of patients with possible or demonstrated IFN-γ deficiency in adulthood is poorly studied and could be greatly enhanced with the integration of genetic data.
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Affiliation(s)
- Nicola L D Smith
- Manchester Fungal Infection Group, Faculty of Medical and Human Science, The University of Manchester, Manchester, UK; Manchester Academic Health Science Centre, University Hospital South Manchester NHS Foundation Trust, Manchester, UK; NIHR South Manchester Respiratory and Allergy Clinical Research Facility, Manchester, UK
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17
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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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18
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Using fluorescence correlation spectroscopy (FCS) for IFN-g detection: a preliminary study. J Immunol Methods 2014; 407:35-9. [PMID: 24685834 DOI: 10.1016/j.jim.2014.03.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 03/10/2014] [Accepted: 03/19/2014] [Indexed: 11/22/2022]
Abstract
Nowadays, enzyme-linked immunosorbent assay (ELISA) based detection of Mycobacterium tuberculosis (M. tuberculosis) antigen triggered interferon-gamma (IFN-g) secretion by blood T cells displays an improved diagnostic value for M. tuberculosis infection. Applications of fluorescence correlation spectroscopy (FCS) have been explored in various subfields of medicine and molecular biology, including detection of a certain biomarker in liquid instead of ELISA. Here, we present a preliminary study of detecting IFN-g using FCS-based technique.
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Wang D, Zhong X, Huang D, Chen R, Bai G, Li Q, Yu B, Fan Y, Sun X. Functional polymorphisms of interferon-gamma affect pneumonia-induced sepsis. PLoS One 2014; 9:e87049. [PMID: 24475220 PMCID: PMC3901723 DOI: 10.1371/journal.pone.0087049] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 12/17/2013] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Sepsis is an inflammatory syndrome caused by infection, and both its incidence and mortality are high. Because interferon-gamma (IFN-γ) plays an important role in inflammation, this work assessed IFN-γ single nucleotide polymorphism (SNPs) that may be associated with sepsis. METHODS A total of 196 patients with pneumonia-induced sepsis and 213 age- and sex-matched healthy volunteers participated in our study from July 2012 to July 2013 in Guangzhou, China. Patient clinical information was collected. Clinical pathology was assessed in subgroups defined based on clinical criteria, APACHE II (acute physiology and chronic health evaluation) and SOFA (sepsis-related organ failure assessment) scores and discharge rate. Four functional SNPs, -1616T/C (rs2069705), -764G/C (rs2069707), +874A/T (rs2430561) and +3234C/T (rs2069718), were genotyped by Snapshot in both sepsis patients and healthy controls. Pearson's chi-square test or Fisher's exact test were used to analyze the distribution of the SNPs, and the probability values (P values), odds ratios (OR) and 95% confidence intervals (CIs) were calculated. RESULTS No mutations in the IFN-γ -764G/C SNP were detected among the participants in our study. The +874A/T and +3234C/T SNPs were in strong linkage disequilibrium (LD) (r(2) = 0.894). The -1616 TC+TT, +874 AT+AA genotype and the TAC haplotype were significantly associated with sepsis susceptibility, while the CTT haplotype was associated with protection against sepsis incidence. Genotype of -1616 TT wasn't only protective against severity of sepsis, but also against higher APACHE II and SOFA scores as +874 AA and +3234 CC. The TAC haplotype was was protective against progression to severe sepsis either. CONCLUSION Our results suggest that functional IFN-γ SNPs and their haplotypes are associated with pneumonia-induced sepsis.
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Affiliation(s)
- Ding Wang
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Experimental Department of Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xuan Zhong
- The department of intensive care unit, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Dongjian Huang
- The department of intensive care unit, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Rui Chen
- Reproductive Department, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Guibin Bai
- The department of intensive care unit, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qing Li
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Experimental Department of Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Bolan Yu
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Experimental Department of Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yong Fan
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Experimental Department of Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaofang Sun
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, Experimental Department of Institute of Gynecology and Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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