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Hashad IM, Nosseir H, Shaban GM, Abdel Rahman MF, Gad MZ. Is there a correlation between -174(G/C) polymorphism of IL-6 gene and the incidence of acute myocardial infarction? JOURNAL OF GENETIC ENGINEERING AND BIOTECHNOLOGY 2021; 19:139. [PMID: 34542791 PMCID: PMC8452807 DOI: 10.1186/s43141-021-00243-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/05/2021] [Indexed: 12/16/2022]
Abstract
Background Cardiovascular disease (CVD) remains the major cause of death worldwide. Most CVD can be prevented by addressing risk factors. Acute myocardial infarction (AMI) is an inflammatory disorder characterized by changes in several cytokines including the interleukins (ILs). Studies are running to evaluate the genetic variation in the inflammatory system and their influence on the risk factors for CVD aiming for future prevention of this global disease. The aim of the current study was too investigate the association of -174 (G/C) IL-6 polymorphism with the incidence of AMI in a representative sector of the Egyptian population and to examine the contribution of IL-6, as a biomarker, in the pathogenesis of AMI. Genotyping of -174 (G/C) IL-6 polymorphism was done by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) while IL-6 levels were assayed by ELISA. Results The genotype distribution of -174 (G/C) IL-6 gene was not significantly different between the control subjects (GG 81.7%, GC 16.3%, CC 1.9%) and the AMI patients (GG 79%, GC 19%, CC 2%).The serum levels of IL-6 were significantly elevated in the AMI patients in comparison to the control subjects (P < 0.0001). Conclusions There is no significant association of -174(G/C) polymorphism in the promoter sequence of IL-6 and the incidence of AMI in the examined sample of Egyptian population. Elevated levels of serum IL-6 confirmed the relationship between inflammation and the incidence of AMI.
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Affiliation(s)
- Ingy M Hashad
- Clinical Biochemistry Unit, Faculty of Pharmacy and Biotechnology, the German University in Cairo, Cairo, Egypt
| | - Habiba Nosseir
- Clinical Biochemistry Unit, Faculty of Pharmacy and Biotechnology, the German University in Cairo, Cairo, Egypt
| | | | - Mohamed F Abdel Rahman
- Department of Biology and Biochemistry, School of Life and Medical Sciences, University of Hertfordshire Hosted by Global Academic Foundation, Cairo, Egypt.
| | - Mohamed Z Gad
- Clinical Biochemistry Unit, Faculty of Pharmacy and Biotechnology, the German University in Cairo, Cairo, Egypt
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Li L, Xu Y, Luis JR, Alfonso-Sanchez MA, Zeng Z, Garcia-Bertrand R, Herrera RJ. Cebú, Thailand and Taiwanese aboriginal populations according to Y-STR loci. Gene 2019; 721S:100001. [PMID: 34530985 PMCID: PMC7286082 DOI: 10.1016/j.gene.2018.100001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 11/24/2018] [Indexed: 11/20/2022]
Abstract
Here we report for the first time the Y27-STR Yfiler plus profiles of the insular population of Cebú in the central region of the Philippine Archipelago and the general continental population of Thailand, two strategic locations of interest in connection with the Austronesian expansion. Traditionally, the peopling of Taiwan has been envisioned as a single wave of agriculturists migrating from mainland Southeast Asia. Yet, more recent data support a scenario in which a number of migrations from the continent populated the island. Genetic affinity parameters from this study indicate that certain Formosan tribes are genetically closer to geographical distant populations in the Solomon Island than to other nearby Taiwanese tribes. Furthermore, Taiwanese aboriginal populations in this study partition into three clusters, one associated with populations from the Philippines and Thailand, a second one segregating with populations of the Solomon Islands and a third grouping made up exclusively of Taiwanese aboriginal tribes. The populations within each of these three clusters exhibit different degrees of differentiation among them suggesting unique population histories. All together, these differential genetic affinities of specific Taiwanese tribes to groups from different geographical regions and to each other are compatible with multiple origins of the Austronesian expansion from Formosa as well as from mainland Southeast Asia. Partitioning of Taiwanese aboriginal populations into three clusters. The middle cluster includes the populations from Cebú and Thailand. A second cluster segregates with populations of the Solomon Islands. A third cluster is made up exclusively of Taiwanese aboriginal tribes. Some Formosan tribes are genetically closer to geographical distant Solomon Island populations.
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Affiliation(s)
- Li Li
- Department of Obstetrics & Gynecology, Zhengzhou Central Hospital, Zhengzhou University, Henan, China
| | - Yanli Xu
- Department of Criminal Police, Chifeng City, China
| | - Javier Rodriguez Luis
- Area de Antropología, Facultad de Biología, Universidad de Santiago de Compostela, Campus Sur s/n, 15782, Santiago de Compostela, Spain
| | - Miguel A Alfonso-Sanchez
- Departamento de Genetica y Antropologia Fisica, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco (UPV/EHU), Bilbao, Spain
| | - Zhaoshu Zeng
- Department of Forensic Medicine, School of Basic Medical Sciences, Zhengzhou University, China
| | | | - Rene J Herrera
- Department of Molecular Biology, Colorado College, Colorado Springs, CO 80903, USA
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Ayelign B, Genetu M, Wondmagegn T, Adane G, Negash M, Berhane N. TNF-α (-308) Gene Polymorphism and Type 2 Diabetes Mellitus in Ethiopian Diabetes Patients. Diabetes Metab Syndr Obes 2019; 12:2453-2459. [PMID: 31819571 PMCID: PMC6886533 DOI: 10.2147/dmso.s229987] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/21/2019] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is a metabolic disorder resulting from insulin insufficiency or function. Predisposing factors for T2DM are mainly genetic and environmental. Genetic polymorphism of cytokines like tumor necrosis factor-alpha (TNF-α) is suggestive of interference with insulin-sensitive glucose uptake and induces insulin resistance that ultimately could lead to T2DM. In this study, we assessed the effect of TNF-α (-308) G/A gene polymorphism and its association with the development of T2DM in an Ethiopian population. METHODS An institutional-based cross-sectional study was conducted on study subjects with T2DM and non-diabetic healthy controls. DNA was extracted and genotyping was carried out by using amplification refractory mutation system polymerase chain reaction. A genetic-polymorphism on TNF-α (-308) G/A with T2DM was evaluated by logistic regression and Student's t-test. A P-value <0.05 was considered as statistically significant. RESULTS In the present study, we observed a significant association between T2DM and TNF-α (-308) gene polymorphism's GG genotype [χ2 test P = 0.005, OR (95% CI) =2.667 (1.309-5.45d8)]. In contrast, no statistically significant differences were observed in the frequencies of genotypes AA and AG (χ2 test P=0.132 and 0.067, respectively). Moreover, T2DM individuals had higher concentrations of lipid profiles for those carrying the TNF-α (-308) GG genotype as compared to the control group. CONCLUSION TNF-α (-308) genetic polymorphism may be implicated in the genetic susceptibility for, as well as the development of T2DM and lipid metabolism in the Ethiopian population. Therefore, a large-scale study and early screening of TNF-α (-308) genetic polymorphism may help in early management and control of diabetes and related outcomes.
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Affiliation(s)
- Birhanu Ayelign
- Department of Immunology and Molecular Biology, School of Biomedical and Laboratory Science, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopa
- Correspondence: Birhanu Ayelign Department of Immunology and Molecular Biology, School of Biomedical and Laboratory Science, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopa Email
| | - Meaza Genetu
- Department of Immunology and Molecular Biology, School of Biomedical and Laboratory Science, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopa
| | - Tadelo Wondmagegn
- Department of Immunology and Molecular Biology, School of Biomedical and Laboratory Science, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopa
| | - Gashaw Adane
- Department of Immunology and Molecular Biology, School of Biomedical and Laboratory Science, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopa
| | - Markos Negash
- Department of Immunology and Molecular Biology, School of Biomedical and Laboratory Science, College of Medicine and Health Science, University of Gondar, Gondar, Ethiopa
| | - Nega Berhane
- Institute of Biotechnology, College of Computational and Natural Science, University of Gondar, Gondar, Ethiopa
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Bertoli D, Serana F, Sottini A, Cordioli C, Maimone D, Amato MP, Centonze D, Florio C, Puma E, Capra R, Imberti L. Less Frequent and Less Severe Flu-Like Syndrome in Interferon Beta-1a Treated Multiple Sclerosis Patients with at Least One Allele Bearing the G>C Polymorphism at Position -174 of the IL-6 Promoter Gene. PLoS One 2015; 10:e0135441. [PMID: 26285213 PMCID: PMC4540473 DOI: 10.1371/journal.pone.0135441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 07/25/2015] [Indexed: 11/23/2022] Open
Abstract
One of the most common adverse event of interferon beta (IFNβ) therapy for multiple sclerosis is flu-like syndrome (FLS), which has been reportedly related to increased levels of cytokines such as interleukin 6 (IL-6) and tumor necrosis factor-alpha (TNF-α). Average cytokine levels can be affected by single nucleotide polymorphism in the gene promoter regions. To investigate whether IL-6 -174 G>C and TNF-α -376 G>A polymorphisms could be correlated to the incidence of FLS, and whether an anti-inflammatory/antipyretic therapy may influence FLS development, a prospective observational study was performed in 190 treatment naïve, multiple sclerosis patients who started IM IFNβ-1a 30mcg once weekly. The identification of IL-6 -174 G>C and TNF-α -376 G>A polymorphisms was achieved by performing an amplification-refractory mutation system. Serum IL-6 levels were measured using enzyme-linked immunosorbent assay in blood samples taken before therapy and then after the first and last IFNβ-1a injection of the follow-up. FLS-related symptoms were recorded by patients once per week during the first 12 weeks of therapy into a self-reported diary. We found that patients carrying at least one copy of the C allele at position -174 in the promoter of IL-6 gene produced lower levels of IL-6 and were less prone to develop FLS, which was also less severe. On the contrary, the polymorphism of TNF-α had no effect on FLS. Patients taking the first dose of anti-inflammatory/antipyretic therapy in the peri-injection period (within 1 hour) experienced a reduced FLS severity. In conclusion, the study of IL-6 -174 G>C polymorphism would allow the identification of patients lacking the C nucleotide on both alleles who are at risk of a more severe FLS, and may be addressed to a timely and stronger anti-inflammatory/antipyretic therapy for a more effective FLS prevention.
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Affiliation(s)
- Diego Bertoli
- CREA, Diagnostics Department, Spedali Civili of Brescia, Brescia, Italy
| | - Federico Serana
- CREA, Diagnostics Department, Spedali Civili of Brescia, Brescia, Italy
| | | | - Cinzia Cordioli
- Multiple Sclerosis Center, Spedali Civili of Brescia, Presidio di Montichiari, Brescia, Italy
| | - Davide Maimone
- Department of Neurology, Garibaldi Hospital, Catania, Italy
| | - Maria Pia Amato
- Department of Neurology, University of Florence–Careggi Hospital, Florence, Italy
| | - Diego Centonze
- Department of Neurosciences Tor Vergata University, S. Lucia Foundation IRCCS, Rome, Italy
| | - Ciro Florio
- Department of Neurology, Ospedale Caldarelli, Napoli, Italy
| | - Elisa Puma
- Biogen Italy, Medical Department, Milan, Italy
| | - Ruggero Capra
- Multiple Sclerosis Center, Spedali Civili of Brescia, Presidio di Montichiari, Brescia, Italy
| | - Luisa Imberti
- CREA, Diagnostics Department, Spedali Civili of Brescia, Brescia, Italy
- * E-mail:
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Kurdistani ZK, Saberi S, Talebkhan Y, Oghalaie A, Esmaeili M, Mohajerani N, Bababeik M, Hassanpour P, Barani S, Farjaddoost A, Ebrahimzadeh F, Trejaut J, Mohammadi M. Distribution of cytokine gene single nucleotide polymorphisms among a multi-ethnic Iranian population. Adv Biomed Res 2015; 4:160. [PMID: 26436076 PMCID: PMC4581131 DOI: 10.4103/2277-9175.161809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 01/21/2015] [Indexed: 02/04/2023] Open
Abstract
Background: Cytokine gene single nucleotide polymorphisms (SNPs) are widely used to study susceptibility to complex diseases and as a tool for anthropological studies. Materials and Methods: To investigate cytokine SNPs in an Iranian multi-ethnic population, we have investigated 10 interleukin (IL) SNPs (IL-1β (C-511T, T-31C), IL-2 (G-384T), IL-4 (C-590T), IL-6 (G-174C), IL-8 (T-251A), IL-10 (G-1082A, C-819T, C-592A) and tumor necrosis factor-alpha (TNF-α) (G-308A) in 415 Iranian subjects comprising of 6 different ethnicities. Allelic and genotypic frequencies as well as Hardy-Weinberg equilibrium (HWE) were calculated by PyPop software. Population genetic indices including observed heterozygosity (Ho), expected heterozygosity (He), fixation index (FIS), the effective number of alleles (Ne) and polymorphism information content (PIC) were derived using Popgene 32 software. Multidimensional scaling (MDS) was constructed using Reynold's genetic distance obtained from the frequencies of cytokine gene polymorphism. Results: Genotypic distributions were consistent with the HWE assumptions, except for 3 loci (IL-4-590, IL-8-251 and IL-10-819) in Fars and 4 loci (IL-4-590, IL-6-174, IL-10-1082 and TNF-α-308) in Turks. Pairwise assessment of allelic frequencies, detected differences at the IL-4-590 locus in Gilakis versus Kurds (P = 0.028) and Lurs (P = 0.022). Mazanis and Gilakis displayed the highest (Ho= 0.50 ± 0.24) and lowest (Ho= 0.34 ± 0.16) mean observed heterozygosity, respectively. Conclusions: MDS analysis of our study population, in comparison with others, revealed that Iranian ethnicities except Kurds and Mazanis were tightly located within a single cluster with closest genetic affinity to Europeans.
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Affiliation(s)
- Zana Karimi Kurdistani
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran ; Department of Molecular Genetics, Fars Science and Research Branch, Islamic Azad University, Shiraz, Iran
| | - Samaneh Saberi
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | - Yeganeh Talebkhan
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | - Akbar Oghalaie
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | - Maryam Esmaeili
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | - Nazanin Mohajerani
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | - Maryam Bababeik
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | - Parisa Hassanpour
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | - Shaghik Barani
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | - Ameneh Farjaddoost
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | - Fatemeh Ebrahimzadeh
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
| | | | - Marjan Mohammadi
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran
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Norhalifah HK, Zafarina Z, Sundararajulu P, Norazmi MN, Edinur HA. Distribution of cytokine gene polymorphisms in five Malay subethnic groups in Peninsular Malaysia. Int J Immunogenet 2015; 42:200-3. [DOI: 10.1111/iji.12189] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 01/31/2015] [Accepted: 02/19/2015] [Indexed: 11/28/2022]
Affiliation(s)
- H. K. Norhalifah
- Human Identification Unit; School of Health Sciences; Health Campus; Universiti Sains Malaysia; Kelantan Malaysia
| | - Z. Zafarina
- Human Identification Unit; School of Health Sciences; Health Campus; Universiti Sains Malaysia; Kelantan Malaysia
- Malaysian Institute of Pharmaceutical and Nutraceuticals (IPharm); Ministry of Science, Technology and Innovation (MOSTI); Penang Malaysia
| | - P. Sundararajulu
- Human Identification Unit; School of Health Sciences; Health Campus; Universiti Sains Malaysia; Kelantan Malaysia
| | - M. N. Norazmi
- Human Identification Unit; School of Health Sciences; Health Campus; Universiti Sains Malaysia; Kelantan Malaysia
- Institute for Research in Molecular Medicine (INFORMM); Health Campus; Universiti Sains Malaysia; Kelantan Malaysia
| | - H. A. Edinur
- Human Identification Unit; School of Health Sciences; Health Campus; Universiti Sains Malaysia; Kelantan Malaysia
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7
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Genetic polymorphism and immune response to tuberculosis in indigenous populations: a brief review. Braz J Infect Dis 2013; 17:363-8. [PMID: 23665009 PMCID: PMC9427389 DOI: 10.1016/j.bjid.2012.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 11/01/2012] [Accepted: 11/01/2012] [Indexed: 11/23/2022] Open
Abstract
We systematically reviewed studies of the immune response to tuberculosis and the genetic polymorphisms associated with Th1- or Th2-mediated cytokine expression in indigenous populations. A bibliographic search was performed on the Medline and ISI databases and included studies published between January 1980 and October 2011. The search terms were tuberculosis, American Indians, Amerindian, indigenous, Indians, native people, aboriginal, immun*, host immune, immune response, cytokine*, polymorphism*, and gene. Regardless of their design, studies that evaluated immunoglobulin, cytokine levels and genetic polymorphisms that altered cytokine expression were included. Thirteen studies met the inclusion criteria. The majority of studies were performed in Latin America, and five investigated the Warao ethnic group of Venezuela. Most of the investigations indirectly evaluated the immune response. Higher anergy to the tuberculin skin test, higher IgG4 and IgM levels, higher IL-5 production and lower TNF-α, IL-12p40 and IFN-γ production were found in the indigenous populations. The studies also reported a predominantly Th2-type response in these populations and a possibly higher susceptibility to tuberculosis. A better understanding of the relevant genetic polymorphisms and their role in immune regulation would help to clarify the immunogenetic mechanisms of TB infection in these populations. This information would be useful for identifying new treatments and preventing infection and progression to active disease.
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Borinskaya SA, Gureev AS, Orlova AA, Sanina ED, Kim AA, Gasemianrodsari F, Shirmanov VI, Balanovsky OP, Rebrikov DV, Koshechkin AV, Yankovsky NK. Allele frequency distributions of -174G/C polymorphism in regulatory region of interleukin 6 gene (IL6) in Russian and worldwide populations. RUSS J GENET+ 2013. [DOI: 10.1134/s1022795413010031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Anoosheh S, Farnia P, Kargar M. Association between TNF-Alpha (-857) Gene Polymorphism and Susceptibility to Tuberculosis. IRANIAN RED CRESCENT MEDICAL JOURNAL 2011; 13:243-8. [PMID: 22737473 PMCID: PMC3371960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 09/10/2010] [Accepted: 11/15/2010] [Indexed: 11/29/2022]
Abstract
BACKGROUND TNF-α as a pro-inflammatory cytokine plays a key role in host defense against tuberculosis (TB). Presence of mutation in TNF-α gene can influence the effectiveness, performance and capability of immune responses against this infection. The Aim of this study was to investigate the frequency of TNF-α alleles and its relationship with susceptibility to TB and TNF-α gene variations. METHODS A case-control study was conducted and 103 healthy controls and 93 TB patients were enrolled. Genotype of TNF-238, TNF -244, TNF-308, TNF -857 and TNF-863 were distinguished using PCR-RFLP method. RESULTS TNF-857 and TNF-863 were in high frequency mutation regions in a population level, and a significant difference at TNF-857 was noticed between the two groups of case and control. CONCLUSION Presence of mutation in TNF-857 region probably increases the host susceptibility to mycobacterial infection. Genotyping of these regions in combination with other factors can be used for screening of high risk persons. According to high distribution of mutations in TNF-857 and TNF-863 regions, further studies on association of these regions is suggested.
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Affiliation(s)
- S Anoosheh
- Mycobacteriology Research Center, NRITLD, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Correspondence: Saber Anoosheh, PhD Candidate, Mycobacteriology Research Center, National Research Institute of Tuberculosis and Lung Disease, Shahid Beheshti University of Medical Sciences, Darabad, Tehran, Iran. Tel.: +98-21-20109505, Fax: +98-21-20109505, E-mail:
| | - P Farnia
- Mycobacteriology Research Center, NRITLD, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M Kargar
- Department of Microbiology, Islamic Azad University, Jahrom Branch, Jahrom, Iran
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Sodsai P, Nakkuntod J, Kupatawintu P, Hirankarn N. Distribution of cytokine gene polymorphisms in Thai population. TISSUE ANTIGENS 2011; 77:593-7. [PMID: 21410656 DOI: 10.1111/j.1399-0039.2011.01647.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The distribution of 21 cytokine polymorphisms within 13 cytokine and cytokine receptor genes was analyzed in 102 healthy Thai individuals using the LIFECODES Cytokine SNP Typing kit. The TGFB codon25 marker is monomorphic in the Thai population. The IL1B+3962, IL6-174, and TNFA-238 are very rare polymorphisms, with only 0.01-0.04 minor allele frequency (MAF). The IL4-1098, IL1A-889, and IL10-1082 are found only 0.06-0.08 in Thai. Other cytokine polymorphisms (IL1B-511, IL1R pst1 1970, IL1RN mspa1 11100, IL4RA+1902, IL12B-1188, IFNG+874, TGFB codon10, TNFA-308, IL2-330, IL2+166, IL4-590, IL4-33, IL10-819, and IL10-592) in Thai have MAFs more than 0.10, ranging between 0.13 and 0.47. When comparing the allele and genotype frequencies with public single nucleotide polymorphism (SNP) database, most cytokine polymorphisms in Thai show similar distribution to Han Chinese and Japanese, but significantly different from Caucasian and African populations. Only a few markers, including IL4A+1902, TNFA-308, IL1B+3962, and IL2+166 show statistically different distribution among Thai and other Asian populations especially with the Japanese.
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Affiliation(s)
- P Sodsai
- Medical Microbiology Interdisciplinary Program, Graduate School, Chulalongkorn University, Bangkok, Thailand
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11
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Wang LH, Ting SC, Chen CH, Tsai CC, Lung O, Liu TC, Lee CW, Wang YY, Tsai CL, Lin YC. Polymorphisms in the apoptosis-associated genes FAS and FASL and risk of oral cancer and malignant potential of oral premalignant lesions in a Taiwanese population. J Oral Pathol Med 2010; 39:155-61. [PMID: 20359312 DOI: 10.1111/j.1600-0714.2009.00873.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Our aim was to measure the relationship of FAS (-1377G>A and -670A>G), FASL (-844C>T) gene variants and risk of oral cancer. METHODS Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis was used to determine the FAS and FASL polymorphisms in 294 oral squamous cell carcinoma (OSCC), 53 oral submucous fibrosis (OSF), and 84 oral leukoplakia (OL) patients, as well as in 333 healthy controls. A standardized questionnaire was applied to collect demographic data, and potential confounding factors. JMP statistical software was used to analyze the association. RESULTS FAS and FASL polymorphisms were not correlated with OSCC development or the malignant potential of OL by simple and multivariate logistic regression. However, a two- to fourfold difference in the risks of betel quid chewing, alcohol consumption, and smoking on OSCC development were observed between participants with different FAS polymorphisms. FAS polymorphisms were significantly correlated with the malignant potential of OSF. Multivariate logistic regression analysis indicated that FAS A(-1377)-G(-670) vs. G(-1377)-A(-670) haplotype (OR = 2.26, 95% CI = 1.16-4.41) was correlated with the malignant potential of OSF. CONCLUSIONS We suggest that FAS and FASL polymorphisms are not significantly correlated with OSCC development or malignant potential of OL. The impact of substance usage on OSCC development could be differentiated by FAS polymorphisms. FAS A(-1377)-G(-670) haplotype may play a role in the malignant potential of OSF.
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Affiliation(s)
- Li-Hsuan Wang
- Division of Molecular Diagnosis, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
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12
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Wang WZ, Wang CY, Cheng YT, Xu AL, Zhu CL, Wu SF, Kong QP, Zhang YP. Tracing the origins of Hakka and Chaoshanese by mitochondrial DNA analysis. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2010; 141:124-30. [PMID: 19591216 DOI: 10.1002/ajpa.21124] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Hakka and Chaoshanese are two unique Han populations residing in southern China but with northern Han (NH) cultural traditions and linguistic influences. Although most of historical records indicate that both populations migrated from northern China in the last two thousand years, no consensus on their origins has been reached so far. To shed more light on the origins of Hakka and Chaoshanese, mitochondrial DNAs (mtDNAs) of 170 Hakka from Meizhou and 102 Chaoshanese from Chaoshan area, Guangdong Province, were analyzed. Our results show that some southern Chinese predominant haplogroups, e.g. B, F, and M7, have relatively high frequencies in both populations. Although median network analyses show that Hakka/Chaoshanese share some haplotypes with NH, interpopulation comparison reveals that both populations show closer affinity with southern Han (SH) populations than with NH. In consideration of previous results from nuclear gene (including Y chromosome) research, it is likely that matrilineal landscapes of both Hakka and Chaoshanese have largely been shaped by the local people during their migration southward and/or later colonization in southern China, and factors such as cultural assimilation, patrilocality, and even sex-bias in the immigrants might have played important roles during the process.
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Affiliation(s)
- Wen-Zhi Wang
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, People's Republic of China
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Mahfouz RAR, Shammaa D, Harb N, Halas H, Sarafian K, Zaatari G, Bazarbachi A. Distribution of cytokine gene polymorphisms in the general Lebanese population: the first report. Genet Test Mol Biomarkers 2009; 13:459-63. [PMID: 19594368 DOI: 10.1089/gtmb.2009.0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
CONTEXT Cytokines are polypeptide regulatory molecules that play a significant role in inflammatory and regulatory responses of the immune system. Several cytokine gene polymorphisms have been studied to date and have been found to be associated with distorted cytokine production or activity by affecting transcriptional regulation and with vulnerability to a variety of infectious and autoimmune diseases as well as to transplant rejection. RESULTS We studied 106 healthy Lebanese individuals using polymerase chain reaction/sequence-specific priming technique to detect 22 single-nucleotide polymorphisms within 13 cytokine genes: IL1alpha 889-T/C, IL1beta 511-T/C, IL1beta +3962-T/C, IL1R pst1 1970-T/C, IL1RA mspa1 11100-T/C, IL4Ralpha 1902-G/A, IL12 1188-C/A, IFNgamma 874-A/T, TGFbeta codon 10-C/T, TGF-beta codon 25-G/C, TNFalpha 308-A/G, TNFalpha 238-A/G, IL2 166-G/T, IL2 330-T/G, IL4 1098-T/G, IL4 590-T/C, IL4 33-T/C, IL6 174-C/G, IL6 nt565-G/A, IL10 1082-G/A, IL10 819-C/T, and IL10 592-A/C. We compared our results to those reported in other populations with similarities observed between the Lebanese and the Italian populations. CONCLUSION The study of different cytokine polymorphisms will aid in understanding the susceptibility of populations to various diseases, and this is the first report from the Lebanese community.
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Affiliation(s)
- Rami A R Mahfouz
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Beirut, Lebanon.
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Rezazadeh M, Hajilooi M, Haidari M, Rafiei A, Alavi SA, Keramat F. Association of susceptibility to brucellosis and interleukin-4 promoter polymorphism. ACTA ACUST UNITED AC 2009; 38:1045-9. [PMID: 17148075 DOI: 10.1080/00365540600786473] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A C-T substitution at position 590 in the interleukin-4 (IL-4) gene is associated with increased production of IL-4. We sought to determine the associations between this polymorphism and susceptibility to brucellosis. DNA was extracted from the whole blood of 163 control individuals and 282 patients with brucellosis. A polymorphism in the IL-4 gene at position 590 from the promoter site was determined using an allele-specific PCR method. The prevalence of the T allele of IL-4 polymorphism was significantly higher in the patients group than in controls (28.9% vs 11.4%, p<0.004). Patients with brucellosis had a higher frequency of intermediate producer genotype (CT) (53.5% vs 22.7%, p<0.001) while low producer genotype (CC) was higher in the control group (77.3% vs 44.4%). Multiple logistic regression analysis demonstrated that patients who were heterozygous (CT) for interleukin-4 promoter polymorphism had a significantly higher risk for brucellosis with an odds ratio of 4.2 (95% CI 2.7-6.6, p<0.0001). Our findings demonstrate for the first time an association between IL-4 590 promoter polymorphism and contracting brucellosis in the Iranian population.
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Affiliation(s)
- Mehdi Rezazadeh
- Department of Internal Medicine, Hamedan University of Medical Sciences, Hamedan, Iran
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Hu KF, Huang KC, Ho YP, Lin YC, Ho KY, Wu YM, Yang YH, Tsai CC. Interleukin-10 (-592 C/A) and interleukin-12B (+16974 A/C) gene polymorphisms and the interleukin-10 ATA haplotype are associated with periodontitis in a Taiwanese population. J Periodontal Res 2009; 44:378-85. [PMID: 19210338 DOI: 10.1111/j.1600-0765.2008.01116.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVE Single nucleotide polymorphisms are assumed to be associated with the differential production of cytokines. We evaluated gene polymorphisms of interleukin-10 (-592C>A, -819C>T and -1082G>A) and interleukin-12B (+16974) in patients with chronic periodontitis (n = 145) and generalized aggressive periodontitis (n = 65) in comparison with healthy controls (n = 126). MATERIAL AND METHODS Gene promoter polymorphisms were analyzed by polymerase chain reaction with sequence-specific primers. Genotype and allele frequencies were analyzed using the chi-square test and logistic regression analysis. RESULTS The interleukin-10 -592 polymorphism showed significant differences among the three groups (p = 0.0330). The genotype frequencies of the -592 locus between the chronic periodontitis and healthy control groups were significantly different (AC vs. AA: odds ratio = 0.33). The combination ATA/ATA seemed to be associated with susceptibility to generalized aggressive periodontitis (p = 0.0276). Patients with the composite ATA/ACC were less likely to develop chronic periodontitis (p = 0.0248). The CC genotype of interleukin-12B (+16974) was related to chronic periodontitis (CC vs. AA, p = 0.0211; CC vs. AA+AC, p = 0.0187). The AC heterozygosity of interleukin-12B was significantly lower in chronic periodontitis vs. healthy controls (p = 0.0500). CONCLUSION The interleukin-10 gene polymorphism at position -592C>A may be associated with a lower risk for development of chronic periodontitis. The interleukin-10 haplotype ATA is associated with generalized aggressive periodontitis. On the other hand, interleukin-12B genetic variants at position +16974 are associated with susceptibility to chronic periodontitis.
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Affiliation(s)
- K-F Hu
- Graduate Institute of Dental Sciences (Faculty of Dentistry), College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Visentainer JEL, Sell AM, da Silva GC, Cavichioli ADG, Franceschi DSA, Lieber SR, de Souza CA. TNF, IFNG, IL6, IL10andTGFB1gene polymorphisms in South and Southeast Brazil. Int J Immunogenet 2008; 35:287-93. [DOI: 10.1111/j.1744-313x.2008.00778.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Javor J, Bucova M, Ferencik S, Grosse-Wilde H, Buc M. Single nucleotide polymorphisms of cytokine genes in the healthy Slovak population. Int J Immunogenet 2007; 34:273-80. [PMID: 17627763 DOI: 10.1111/j.1744-313x.2007.00693.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cytokines are molecules that control and modulate the activities of numerous target cells via binding to specific receptors. The observed differences in the cytokine production among individuals can be, at least partially, explained by gene polymorphisms. Several cytokine gene polymorphisms have been identified to play a role in susceptibility to various diseases, including autoimmune, infectious, allergic or cardiovascular diseases. The aim of the current study was to determine allele and genotype frequencies of 22 polymorphisms in 13 cytokine genes in the healthy Slovak population and to compare them with data available from six populations from Central and Southern Europe. A polymerase chain reaction with sequence-specific primers was used to genotype polymorphisms within genes encoding IL-1alpha, IL-1beta, IL-1R, IL-1RA, IL-4Ralpha, IL-12, IFN-gamma, TGF-beta, TNF-alpha, IL-2, IL-4, IL-6 and IL-10 in a sample of 140 unrelated Slovak subjects. The allelic distribution of all polymorphisms in the Slovak population was very close to that in the geographically and historically closest populations in Central Europe--the Czech and the Polish. However, several differences were found between the Slovak and four populations from Southern Europe. The obtained data represent a basis for further studies on association of cytokine gene polymorphisms with some diseases.
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Affiliation(s)
- J Javor
- Department of Immunology, School of Medicine, Comenius University, Saskinova 4, 811 08 Bratislava, Slovakia.
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18
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Prognostic factors associated with the survival of oral and pharyngeal carcinoma in Taiwan. BMC Cancer 2007; 7:101. [PMID: 17573960 PMCID: PMC1931441 DOI: 10.1186/1471-2407-7-101] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2006] [Accepted: 06/15/2007] [Indexed: 12/04/2022] Open
Abstract
Background In Taiwan, a distinct ethnic group variation in incidence and mortality rates has been suggested for most carcinomas. Our aim is to identify the role of prognostic factors associated with the survival of oral and pharyngeal carcinoma in Taiwan. Methods Taiwan Cancer Registry records of 9039 subjects diagnosed with oral and pharyngeal carcinoma were analyzed. The population was divided into three ethnic groups by residence, which were Taiwanese aborigines, Hakka and Hokkien communities. Five-year survival rates were estimated by Kaplan-Meier methods. Ethnic curves differed significantly by log-rank test; therefore separate models for Taiwanese aborigines, Hakka and Hokkien were carried out. The Cox multivariate proportional hazards model was used to examine the role of prognostic factors on ethnic survival. Results The five-year survival rates of oral and pharyngeal carcinoma were significantly poorer for Hokkien community (53.9%) and Taiwanese aborigines community (58.1%) compared with Hakka community (60.5%). The adjusted hazard ratio of Taiwanese aborigines versus Hakka was 1.07 (95%CI, 0.86–1.33) for oral and pharyngeal carcinoma mortality, and 1.16 (95%CI, 1.01–1.33) for Hokkien versus Hakka. Males had significantly poor prognosis than females. Subjects with tongue and/or mouth carcinoma presented the worst prognosis, whereas lip carcinoma had the best prognosis. Subjects with verrucous carcinoma had better survival than squamous cell carcinoma. Prognosis was the worst in elderly subjects, and subjects who underwent surgery had the highest survival rate. Conclusion Our study presented that predictive variables in oral and pharyngeal carcinoma survival have been: ethnic groups, period of diagnosis, gender, diagnostic age, anatomic site, morphologic type, and therapy.
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Skorpil N, Kolesár L, Striz I, Lardy NM, Slavcev A. Cytokine gene polymorphisms in the Dutch population. Int J Immunogenet 2007; 34:87-90. [PMID: 17373932 DOI: 10.1111/j.1744-313x.2007.00663.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Numerous studies have shown that variations in the production and activity of cytokines influence the susceptibility and/or resistance to various infectious agents, autoimmune diseases, and cancer, as well as the predisposition to allograft rejection. Differences in the production of cytokines between individuals are often caused by single nucleotide polymorphisms (SNP) in the promoter or coding regions of cytokine genes. The cytokine polymorphisms of 107 unrelated Caucasian individuals originating from various parts of the Netherlands were studied and compared with the results of two European (Czech and Italian) populations. Twenty-two SNPs of 13 different cytokine genes were analysed. To test the Hardy-Weinberg equilibrium, allele frequencies were estimated by direct gene counting. Evaluation of the allele frequencies of the Dutch, Italian and Czech populations showed that five SNPs were significantly different between the Dutch and the Italians, while these SNPs did not vary between the Dutch and the Czechs. This analysis, in combination with other types of immune profiling, may be helpful for prediction of the clinical outcome of various infectious and immune-related disorders, as well as for estimation of the risk for rejection and graft vs. host disease after organ or stem cell transplantation.
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Affiliation(s)
- N Skorpil
- Department of Immunology, Faculty of Medicine, Free University of Amsterdam, The Netherlands.
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Dai CY, Chuang WL, Lee LP, Chen SC, Hou NJ, Lin ZY, Hsieh MY, Hsieh MY, Wang LY, Chang WY, Yu ML. Associations of tumour necrosis factor alpha promoter polymorphisms at position -308 and -238 with clinical characteristics of chronic hepatitis C. J Viral Hepat 2006; 13:770-4. [PMID: 17052277 DOI: 10.1111/j.1365-2893.2006.00767.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The aim of this study was to investigate the association between G vs A transitions in the promoter region of the tumour necrosis factor (TNF) alpha at positions -308 (TNF308.2) and -238 (TNF238.2) and clinical features of chronic hepatitis C (CHC). These two promoter TNF-alpha variants were determined in 250 biopsy-proven CHC patients by polymerase chain reaction amplification, followed by the Restriction Fragment Length Polymorphism (RFLP) method. The distribution of -308 and -238 TNF-alpha promoter genotypes were TNF308.1/TNF308.1: 187 (74.8%), TNF308.1/TNF308.2: 57 (22.8%) and TNF308.2/TNF308.2: 6 (2.4%), respectively, and TNF238.1/TNF238.1: 247 (98.8%) and TNF238.1/TNF238.2: 3 (1.2%). The frequencies of the TNF308.2 and TNF238.2 promoter alleles were 13.8% and 0.6%. Increased TNF308.2 allele copy numbers were significantly associated with increased frequency of lower pretreatment hepatitis C virus (HCV) RNA levels (<800 000 IU/mL; P = 0.031) and severe fibrosis stage (F3-F4; P = 0.006) and higher mean fibrosis score (P = 0.007). The higher cytokine production (with one or two TNF308.2 alleles) was correlated significantly with lower pretreatment HCV RNA levels with a lower mean HCV RNA level (P = 0.024) and increased frequency of lower pretreatment HCV RNA levels (<800 000 IU/mL; P = 0.017). Stepwise logistic regression showed that higher fibrosis score and low HCV RNA levels were independently related to the TNF308.2 allele [odds ratio (95% CI): 1.385 (1.127-1.702) and 0.698 (0.488-0.990)]. We conclude that inheritance of the TNF-alpha promoter genotype at the position -308 appears to be associated with variability in severity of fibrosis and viral load in chronic HCV infection.
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Affiliation(s)
- C-Y Dai
- Division of Hepatobiliary, Faculty of Medicine, College of Medicine, Kaohsiung Medical University Hospital, No. 100 Tzyou 1st Road, Kaohsiung 807, Taiwan
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Gervaziev YV, Kaznacheev VA, Gervazieva VB. Allelic polymorphisms in the interleukin-4 promoter regions and their association with bronchial asthma among the Russian population. Int Arch Allergy Immunol 2006; 141:257-64. [PMID: 16931887 DOI: 10.1159/000095295] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2005] [Accepted: 04/20/2006] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Susceptibility to the development of bronchial asthma (BA) and other atopic diseases is known to be associated with genetic components. OBJECTIVE To evaluate the possible role of the polymorphisms in IL-4 gene promoters (C-33T, C-590T and G-1098T) in modulating allergic response and asthma in the Russian population. METHODS The polymorphism analysis was carried out by PCR-RFLP; IL-4 and total IgE concentrations were determined by ELISA. RESULTS In the case group, the T allele was found at frequencies of 74% (C-33T), 51% (C-590T) and 5% (G-1098T); in the control group the frequencies were 22, 42 and 8%, respectively. Only the C-33T polymorphism was associated with BA. The concentrations of total IgE and serum IL-4 were raised in the case group, while in the control group they were normal. Serum IL-4 level depended on C-33T polymorphism both in the case and control groups, the mutant T allele promoting its increase. The dependence on C-590T polymorphism was detected only in the case group. As for the total IgE level, in both cases it depended on the polymorphism in the case group rather than the control. G-1098T polymorphism did not demonstrate any correlations with total IgE or serum IL-4 levels. All 3 polymorphisms did not affect the severity of BA in the case group. On the basis of the computer analysis, we propose that the T-33C region is the CREB-binding site. CONCLUSIONS Our data suggest that IL-4 promoter polymorphism in the Russian population might play a role both conferring susceptibility to BA and modulating the levels of serum IL-4 and total IgE.
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Affiliation(s)
- Y V Gervaziev
- V.N. Orekhovich's Institute of Biomedical Chemistry RAMS, Moscow, Russia.
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Kubistova Z, Mrazek F, Tudos Z, Kriegova E, Ambruzova Z, Mytilineos J, Petrek M. Distribution of 22 cytokine gene polymorphisms in the healthy Czech population. Int J Immunogenet 2006; 33:261-7. [PMID: 16893389 DOI: 10.1111/j.1744-313x.2006.00609.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Cytokine gene polymorphisms (CGP) have been implicated in the pathogenesis of immune-mediated diseases including transplant complications via their effect on cytokine production and regulation. This study aimed to determine population frequencies of selected cytokine single nucleotide polymorphisms in the healthy Czech population and compare them with the data from other selected European populations. CGP were genotyped by polymerase chain reaction with sequence-specific primers (PCR-SSP) using the Heidelberg kit in 120 unrelated Czech healthy individuals. Chi-squared analysis was used to test for a deviation from Hardy-Weinberg equilibrium. Allelic and genotype frequencies and carriage rates were determined for 22 CGP located within 13 cytokine genes in total. The frequencies observed in this study were similar to those available from the other two geographically close Central European centres, but they differed for several CGP from the data reported in south European populations. The data on the distribution of 22 CGP in the healthy Czech population reported here may be utilized to investigate possible associations of CGP with diseases or transplantation outcome.
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Affiliation(s)
- Z Kubistova
- Department of Immunology - Immunogenetics Group, Palacky University, Olomouc, Czech Republic
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Bagheri M, Omrani D, Abdi-Rad I. Cytokine Single Nucleotide Polymorphisms in Iran. J Interferon Cytokine Res 2006; 26:414-20. [PMID: 16734562 DOI: 10.1089/jir.2006.26.414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Overall expression and secretion of cytokines are dependent on genetic nucleotide variations within or adjacent to regulatory regions of cytokine genes. This study allows the comparison of the prevalence of particular genetic markers. In 40 Iranian healthy subjects, cytokine single nucleotide polymorphisms (SNPs) were used to determine allelic and genotypic frequencies for the following cytokine genes: interleukin-1alpha (IL-1alpha) (T/C -889), IL-1beta (C/T -511, T/C +3962), IL-12 ( C/A-1188), interferon-gamma (IFN-gamma) (A/T UTR 5644), transforming growth factor-beta (TGF-beta) (C/T codon 10, G/C codon 25), tumor necrosis factor alpha (TNF-alpha) (G/A -308, G/A -238), IL-2 (T/G -330, G/T +166), IL-4 (T/G -1089, T/C -590, T/C -33), IL-6 (G/C -174, G/A nt565), IL-10 (G/A -1082, C/T -819, C/A -592), IL-1R (C/T pst11970), IL-1RA (T/C mspa 111100), IL-4RA (G/A +1902). All typing was performed using the PCR-SSP assay. Iranian and Italian, English, German, and Greek populations had similar cytokine profiles, but in some cases, the Iranian allele and genotype frequencies were significantly different from those of other Asian and African American populations for the majority of polymorphisms.
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Affiliation(s)
- Mortaza Bagheri
- Faculty of Medicine, Genetic Department, Uromieh Medical Sciences University, Uromieh, Iran.
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Bagheri M, Abdi-Rad I, Omrani D, Khalkhali HR. Heterogeneity of cytokine single-nucleotide polymorphisms among the Iranian and in the other East-South Asian populations. Transfus Med 2006; 16:192-9. [PMID: 16764598 DOI: 10.1111/j.1365-3148.2006.00666.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Cytokine gene polymorphisms may affect their transcription, influence their level of production and may be implicated in inducing susceptibility or resistance to diseases. In 40 Iranian healthy subjects, cytokine single-nucleotide polymorphisms (SNPs) were used to determine allelic and genotypic frequencies for the following cytokine genes: IL-1a (T/C -889), IL-1beta (C/T -511, T/C 3962), IL-12 (C/A -1188), IFN-gamma (A/T UTR 5644), TGF-beta (C/T codon 10, G/C codon 25), TNF-a (G/A -308, G/A -238), IL-2 (T/G -330, G/T 166), IL-4 (T/G -1089, T/C -590, T/C -33), IL-6 (G/C -174, G/A nt565), IL-10 (G/A -1082, C/T -819, C/A -592), IL-1R (C/T pst11970), IL-1RA (T/C mspa111100) and IL-4RA (G/A 1902). All typing were performed with polymerase chain reaction with sequence specific primers assay. Significant heterogeneity of cytokine SNPs among the Iranian and the other East-South Asian populations was observed. Heterogeneity of cytokine SNPs may explain the role of natural selection in susceptibilities of populations to different disorders.
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Affiliation(s)
- M Bagheri
- Genetic Department, Faculty of Medicine, Uremia Medical Sciences University, Uremia, Iran.
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