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Masmoudi HC, Afify N, Alnaqbi H, Alhalwachi Z, Tay GK, Alsafar H. HLA pharmacogenetic markers of drug hypersensitivity from the perspective of the populations of the Greater Middle East. Pharmacogenomics 2022; 23:695-708. [PMID: 35971864 DOI: 10.2217/pgs-2022-0078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Specific HLA associations with drug hypersensitivity may vary between geographic regions and ethnic groups. There are little to no data related to HLA-drug hypersensitivity on populations who reside in the Greater Middle East (GME), a vast region spanning from Morocco in the west to Pakistan in the east. In this review, the authors intended to summarize the significant HLA alleles associated with hypersensitive drug reactions induced by different drugs, as have been found in different populations, and to summarize the prevalence of these alleles in the specific and diverse populations of the GME. For example, HLA-B*57:01 allele prevalence, associated with abacavir-induced hypersensitivity, ranges from 1% to 3%, and HLA-DPB1*03:01 prevalence, associated with aspirin-induced asthma, ranges from 10% to 14% in the GME population. Studying pharmacogenomic associations in the ethnic groups of the GME may allow the discovery of new associations, confirm ones found with a low evidence rate and enable cost-effectiveness analysis of allele screening before drug use.
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Affiliation(s)
- Hend Chaker Masmoudi
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates.,Pharmaceutical Sciences Department, Faculty of Pharmacy of Monastir, Monastir, 5000, Tunisia.,Department of Histology & Cytogenetics, Institute Pasteur de Tunis, Tunis, 1002, Tunisia
| | - Nariman Afify
- College of Medicine & Health Sciences, Khalifa University of Science & Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates
| | - Halima Alnaqbi
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates.,Department of Biomedical Engineering, Khalifa University of Science & Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates
| | - Zainab Alhalwachi
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates
| | - Guan K Tay
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates.,Faculty of Health & Medical Sciences, UWA Medical School, University of Western Australia, Perth, 6009, Western Australia.,School of Medical & Health Sciences, Edith Cowan University, Joondalup, 6027, Western Australia
| | - Habiba Alsafar
- Center for Biotechnology, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates.,College of Medicine & Health Sciences, Khalifa University of Science & Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates.,Department of Biomedical Engineering, Khalifa University of Science & Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates
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HLA-A, -B, -C, -DRB1 and -DQB1 allele and haplotype frequencies in Lebanese and their relatedness to neighboring and distant populations. BMC Genomics 2022; 23:456. [PMID: 35725365 PMCID: PMC9208108 DOI: 10.1186/s12864-022-08682-7] [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] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 06/10/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND This study examined the origin of present-day Lebanese using high-resolution HLA class I and class II allele and haplotype distributions. The study subjects comprised 152 unrelated individuals, and their HLA class I and class II alleles and two-locus and five-locus haplotypes were compared with those of neighboring and distant communities using genetic distances, neighbor-joining dendrograms, correspondence, and haplotype analyses. HLA class I (A, B, C) and class II (DRB1, DQB1) were genotyped at a high-resolution level by PCR-SSP. RESULTS In total, 76 alleles across the five HLA loci were detected: A*03:01 (17.1%), A*24:02 (16.5%), B*35:01 (25.7%), C*04:01 (25.3%), and C*07:01 (20.7%) were the most frequent class I alleles, while DRB1*11:01 (34.2%) and DQB1*03:01 (43.8%) were the most frequent class II alleles. All pairs of HLA loci were in significant linkage disequilibrium. The most frequent two-locus haplotypes recorded were DRB1*11:01 ~ DQB1*03:01 (30.9%), B*35:01-C*04:01 (20.7%), B*35:01 ~ DRB1*11:01 (13.8%), and A*24:02 ~ B*35:01 (10.3%). Lebanese appear to be closely related to East Mediterranean communities such as Levantines (Palestinians, Syrians, and Jordanians), Turks, Macedonians, and Albanians. However, Lebanese appear to be distinct from North African, Iberian, and Sub-Saharan communities. CONCLUSIONS Collectively, this indicates a limited genetic contribution of Arabic-speaking populations (from North Africa or the Arabian Peninsula) and Sub-Saharan communities to the present-day Lebanese gene pool. This confirms the notion that Lebanese population are of mixed East Mediterranean and Asian origin, with a marked European component.
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Clinical features, epidemiology, autoantibody status, HLA haplotypes and genetic mechanisms of type 1 diabetes mellitus among children in Qatar. Sci Rep 2021; 11:18887. [PMID: 34556755 PMCID: PMC8460652 DOI: 10.1038/s41598-021-98460-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 09/03/2021] [Indexed: 11/08/2022] Open
Abstract
To describe the clinical features, epidemiology, autoantibody status, HLA haplotypes and genetic mechanisms of type 1 diabetes mellitus (T1DM). Patients (0-18 years) with diabetes were recruited. Clinical data was collected, autoantibodies and c-peptide were measured. Whole Genome Sequencing was performed. Genomic data analysis was compared with the known genes linked with T1DM and HLA alleles were studied. 1096 patients had one or more antibody positivity. The incidence of T1DM in 2020 was 38.05 per 100,000 children and prevalence was 249.73. GADA was the most common autoantibody followed by IAA. Variants in GSTCD, SKAP2, SLC9B1, BANK1 were most prevalent. An association of HLA haplotypes DQA1*03:01:01G (OR = 2.46, p value = 0.011) and DQB1*03:02:01G (OR = 2.43, p value = 0.022) was identified. The incidence of T1DM in Qatar is the fourth highest in the world, IA2 autoantibody was the most specific with some patients only having ZnT8 or IA2 autoantibodies thus underlining the necessity of profiling all 4 autoantibodies. The genes associated with T1DM in the Arab population were different from those that are common in the Caucasian population. HLA-DQ was enriched in the Qatari patients suggesting that it can be considered a major risk factor at an early age.
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Hajjej A, Saldhana FL, Dajani R, Almawi WY. HLA-A, -B, -C, -DRB1 and -DQB1 allele and haplotype frequencies and phylogenetic analysis of Bahraini population. Gene 2020; 735:144399. [PMID: 32001374 DOI: 10.1016/j.gene.2020.144399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/21/2019] [Accepted: 01/23/2020] [Indexed: 11/30/2022]
Abstract
The origin of Arab-speaking population is classified according to their geographical location, ethnic background, and historical influx of nearby and distant populations. Data on HLA class I and class II loci in (Arabian Peninsula) Bahraini population are lacking. We analyzed HLA genetic profile of Bahrainis with neighboring communities, and with Levantines, North Africans, Sub-Saharans, Europeans, and Asians, using genetic distances, neighbor-joining dendrograms, correspondence and haplotype analysis. HLA class I and class II genotyping were done by high resolution PCR-SSP in 175 Bahraini subjects. In total, 19 HLA-A, 33 HLA-B, 15 HLA-C, 14 DRB1 and 7 DQB1 alleles were identified. The most common class I alleles were A*02:01:01 (18.3%), A*01:01:01(15.4%), B*35:01:02 (12.9%), C*12:01:01 (15.1%), and C*04:01:01 (14.9%), while DRB1*03:01:01 (18.0%), DQB1*02:01:01 (29.1%), and DQB1*05:01:01 (24.9%) were the most frequent class II alleles. Significant linkage disequilibrium was seen between all HLA loci pairs. DRB1*03:01:01-DQB1*02:01:01 (15.18%) was the most frequent two-locus haplotype. Significant negative Fnd values were observed, indicating balancing selection at studied loci. Bahrainis appear to be related to Western Mediterranean (North Africans, Iberians and French), but relatively distinct from Levantines (Palestinians, Lebanese, and Jordanians) and Sub-Saharans. This indicates limited genetic contribution of Levantine Arabs and Sub-Saharans to the Bahraini gene pool.
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Affiliation(s)
- Abdelhafidh Hajjej
- Department of Immunogenetics, National Blood Transfusion Center, Tunis, Tunisia
| | - F Lisa Saldhana
- Faculte' des Sciences de Tunis, Universite' de Tunis El Manar, Tunis, Tunisia
| | - Rana Dajani
- Department of Biology, Hashemite University, Zarqa, Jordan
| | - Wassim Y Almawi
- Faculte' des Sciences de Tunis, Universite' de Tunis El Manar, Tunis, Tunisia; School of Medicine, Nazarbayev University, Astana, Kazakhstan.
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Sharma N, Toor D, Baro L, Chaliha MS, Kusre G, Baruah SM, Das S. HLA-DQB genetic susceptibility and rheumatic heart disease: a case-control study. Asian Cardiovasc Thorac Ann 2020; 28:147-151. [DOI: 10.1177/0218492320908988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Rheumatic heart disease is a major global health concern, especially in low- and middle-income countries. The pathogenesis is attributable to an aberrant immune response, host genetic factors, and socioeconomic status. The objective of this study was to screen HLA-DQB1 alleles as genetic susceptibility markers in rheumatic heart disease patients in Assam, North East India, and to correlate the predominant allele with socioeconomic status and clinical profile. Methods A case-control study of 100 echocardiography-confirmed rheumatic heart disease patients and age- and sex-matched healthy controls from Assam Medical College and Hospital was conducted. Human leukocyte antigen typing was performed using HLA-DQ typing kit. A questionnaire was designed to study the socioeconomic status and clinical profile of rheumatic heart disease patients. Results Among the 9 alleles studied, HLA-DRBQ1*03:01 was found to be the statistically significant predominant allele in this population, especially in the Ahom ethnic group. In the HLA-DRBQ1*03:01-positive population, rural dwelling was found to be a significantly increased risk factor for rheumatic heart disease. Among severe cases, 90% of mitral stenosis, 40% of mitral regurgitation, and 33.3% of aortic regurgitation cases were HLA-DRBQ1*03:01-positive. Also, 50% of aortic valve thickening and 36.8% of mitral valve thickening cases were found in this population. Conclusion Our data suggest that HLA-DRBQ1*03:01 is a significant susceptibility marker in this population, and predominant in the rural population. Furthermore, it may play an important role in determining the pattern of valve damage in rheumatic heart disease patients.
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Affiliation(s)
- Neha Sharma
- Amity Institute of Virology and Immunology, Amity University Uttar Pradesh, India
| | - Devinder Toor
- Amity Institute of Virology and Immunology, Amity University Uttar Pradesh, India
| | - Lokajeet Baro
- Assam Medical College and Hospital, Dibrugarh, Assam, India
| | | | - Giriraj Kusre
- Assam Medical College and Hospital, Dibrugarh, Assam, India
| | | | - Sangeeta Das
- Assam Medical College and Hospital, Dibrugarh, Assam, India
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Messoussi M, Hajjej A, Ammar Elgaaied AB, Almawi WY, Arnaiz-Villena A, Hmida S, Fadhlaoui-Zid K. HLA Class II Allele and Haplotype Diversity in Libyans and Their Genetic Relationships with Other Populations. Immunol Invest 2019; 48:875-892. [PMID: 31161824 DOI: 10.1080/08820139.2019.1614950] [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] [Indexed: 12/25/2022]
Abstract
Background: Libya witnessed the succession of many civilizations and ethnic groups throughout history, thereby questioning the origin of present-day Libyans. Indeed, they were considered Africans given the geographical position of the country, Arabs at the cultural level, and Berbers because of the notable presence of Berber tribes. Genetic anthropology studies investigating the origin of Libyans were rarely reported, and thus little was known about the population structure of current Libyans, particularly at autosomic markers level. Methods: We examined HLA class II (DRB1, DQB1) gene profiles of 101 unrelated Libyans, and compared them with Arab-speaking communities and with Sub-Saharan and Mediterranean populations using Neighbour-Joining dendrograms, genetic distances, correspondence, and haplotype analysis. Results: Of the 42 DRB1 alleles identified, DRB1*07:01 (14.36%), DRB1*03:01 (12.38%) were the most frequent, while DQB1*02:01 (24.17%), DQB1*02:02 (13.86%), and DQB1*03:01 (12.38%) were the most frequent of the 17 DQB1 alleles detected. DRB1*03:01-DQB1*02:01 (6.93%), DRB1*07:01-DQB1*02:02 (4.45%), and DRB1*04:03-DQB1*03:02 (3.46%) were the most frequent DRB1-DQB1 haplotypes. Conclusion: Libyans appear to be closely related to North Africans, Saudis, and Iberians, but distinct from Levantine Arabs, East Mediterraneans, and Sub-Saharan Africans. This indicates limited genetic contribution of Levantine Arabs and Sub-Saharans on the makeup of Libyan gene pool. Our study confirmed genetic heterogeneity among Arab populations, with three identified groups. The first comprises North Africans, Saudis, and Kuwaitis who were related to Iberians and West Mediterraneans, while the second consists of Levantine Arabs who were close to East Mediterraneans, and the third contained Sudanese and Comorians, with a close relatedness to Sub-Saharans.
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Affiliation(s)
- Monia Messoussi
- Laboratory of Genetics, Immunology, and Human Pathologies, Faculty of Science of Tunis, University Tunis El Manar , Tunis , Tunisia
| | - Abdelhafidh Hajjej
- Department of Immunogenetics, National Blood Transfusion Center , Tunis , Tunisia
| | - Amel Ben Ammar Elgaaied
- Laboratory of Genetics, Immunology, and Human Pathologies, Faculty of Science of Tunis, University Tunis El Manar , Tunis , Tunisia
| | - Wassim Y Almawi
- School of Medicine, Nazarbayev University , Astana , Kazakhstan.,Department of Biological Sciences, Faculty of Sciences, El-Manar University , Tunis , Tunisia
| | - Antonio Arnaiz-Villena
- Department of Immunology, University Complutense, School of Medicine, Madrid Regional Blood Center , Madrid , Spain
| | - Slama Hmida
- Department of Immunogenetics, National Blood Transfusion Center , Tunis , Tunisia
| | - Karima Fadhlaoui-Zid
- Laboratory of Genetics, Immunology, and Human Pathologies, Faculty of Science of Tunis, University Tunis El Manar , Tunis , Tunisia.,Department of Biology, College of Science, Taibah University , Al Madinah Al Monawarah , Saudi Arabia.,Higher Institute of Biotechnology of Beja, University of Jendouba , Beja , Tunisia
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Adwan M. Clinical and Serologic Characteristics of Systemic Lupus Erythematosus in the Arab World: A Pooled Analysis of 3,273 Patients. Arch Rheumatol 2018; 33:455-463. [PMID: 30874242 PMCID: PMC6409177 DOI: 10.5606/archrheumatol.2018.6832] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 02/01/2018] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVES This study aims to describe the clinical and immunological characteristics of systemic lupus erythematosus in the Arab world. MATERIALS AND METHODS We searched PubMed and Google Scholar for observational studies describing the clinical and serologic features of systemic lupus erythematosus in adult patients in the Arab world. We used the search terms "lupus in Arabs" and the names of individual Arab countries. Twenty-two articles from 11 countries including 3,273 patients (349 males, 2,924 females; mean age 28.9 years) met the inclusion criteria and were analyzed. Studies that reported on either clinical or serologic data in adult patients were included. RESULTS The mean age at disease onset was 28.9 years. The female to male ratio was 8.34:1. The most common clinical manifestations were arthralgia/arthritis (81.1%), anemia (55.6%), fatigue (53.4%), malar rash (53.1%) and renal manifestations (50.4%). Antinuclear antibodies were present in 97.2%, anti-double stranded deoxyribonucleic acid in 74.1%, anti-Ro/Sjögren syndrome A in 50.5%, anti-ribonucleoprotein in 43.5%, anti-Smith in 40.7% and anti-La/Sjögren syndrome B in 29.2%. The mortality rate was 7.6%. The frequency of various clinical and immunological manifestations varied between different regions. CONCLUSION Systemic lupus erythematosus displays several different clinical and serologic characteristics, both among different Arab populations and in comparison to other ethnic groups.
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Affiliation(s)
- Marwan Adwan
- Department of Medicine, The University of Jordan, Amman, Jordan
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8
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Hajjej A, Almawi WY, Arnaiz-Villena A, Hattab L, Hmida S. The genetic heterogeneity of Arab populations as inferred from HLA genes. PLoS One 2018. [PMID: 29522542 PMCID: PMC5844529 DOI: 10.1371/journal.pone.0192269] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This is the first genetic anthropology study on Arabs in MENA (Middle East and North Africa) region. The present meta-analysis included 100 populations from 36 Arab and non-Arab communities, comprising 16,006 individuals, and evaluates the genetic profile of Arabs using HLA class I (A, B) and class II (DRB1, DQB1) genes. A total of 56 Arab populations comprising 10,283 individuals were selected from several databases, and were compared with 44 Mediterranean, Asian, and sub-Saharan populations. The most frequent alleles in Arabs are A*01, A*02, B*35, B*51, DRB1*03:01, DRB1*07:01, DQB1*02:01, and DQB1*03:01, while DRB1*03:01-DQB1*02:01 and DRB1*07:01-DQB1*02:02 are the most frequent class II haplotypes. Dendrograms, correspondence analyses, genetic distances, and haplotype analysis indicate that Arabs could be stratified into four groups. The first consists of North Africans (Algerians, Tunisians, Moroccans, and Libyans), and the first Arabian Peninsula cluster (Saudis, Kuwaitis, and Yemenis), who appear to be related to Western Mediterraneans, including Iberians; this might be explained for a massive migration into these areas when Sahara underwent a relatively rapid desiccation, starting about 10,000 years BC. The second includes Levantine Arabs (Palestinians, Jordanians, Lebanese, and Syrians), along with Iraqi and Egyptians, who are related to Eastern Mediterraneans. The third comprises Sudanese and Comorians, who tend to cluster with Sub-Saharans. The fourth comprises the second Arabian Peninsula cluster, made up of Omanis, Emiratis, and Bahrainis. It is noteworthy that the two large minorities (Berbers and Kurds) are indigenous (autochthonous), and are not genetically different from "host" and neighboring populations. In conclusion, this study confirmed high genetic heterogeneity among present-day Arabs, and especially those of the Arabian Peninsula.
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Affiliation(s)
- Abdelhafidh Hajjej
- Department of Immunogenetics, National Blood Transfusion Center, Tunis, Tunisia
- * E-mail:
| | - Wassim Y. Almawi
- Department of Medicine, Harvard Medical School, Boston, MA, United States of America
| | - Antonio Arnaiz-Villena
- Department of Immunology, University Complutense, School of Medicine, Madrid Regional Blood Center, Madrid, Spain
| | - Lasmar Hattab
- Department of Medical Analysis, Hospital of Gabes (Ghannouch), Gabes, Tunisia
| | - Slama Hmida
- Department of Immunogenetics, National Blood Transfusion Center, Tunis, Tunisia
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Distribution of HLA DRB1 and DQB1 alleles and DRB1-DQB1 haplotypes among Bahraini women with polycystic ovary syndrome. J Reprod Immunol 2016; 117:76-80. [PMID: 27505846 DOI: 10.1016/j.jri.2016.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 07/13/2016] [Accepted: 07/27/2016] [Indexed: 12/24/2022]
Abstract
OBJECTIVE This study investigated the association between HLA-DRB1 and -DQB1 alleles and DRB1-DQB1 haplotypes, and polycystic ovary syndrome (PCOS) in Bahraini women. DESIGN Case-control, retrospective study. METHODS Study subjects comprised 80 women with PCOS, and 169 age- and ethnically-matched control women. DRB1 and DQB1 genotyping was done by PCR-SSP. RESULTS Of the 13 DRB1 alleles and 5 DQB1 alleles identified, DRB1*10 (14.3% vs. 4.4%) and DRB1*14 (8.7% vs. 1.1%), along with DQB1*05 (35.0% vs. 23.9%), were the most frequent alleles in cases, while DRB1*11 (15.3% vs. 6.8%) was the frequent allele found in controls. The association of PCOS with DRB1*10 (Pc<0.001), DRB1*14 (Pc<0.001), DQB1*05 (Pc=0.040), but not DRB1*11 (Pc=0.076) persisted after correcting for multiple comparisons. DRB1-DQB1 haplotype analysis identified nine common shared haplotypes in women with PCOS and control women, with a frequency exceeding 1%. Significantly higher frequency of DRB1*10-DQB1*05 (12.4% vs. 3.1%) and DRB1*14-DQB1*03 (5.6% vs. 1.0%), and reduced frequency of DRB1*11-DQB1*03 (4.1% vs. 14.1%) haplotypes were seen in women with PCOS vs. control women, thus assigning PCOS-susceptible and -protective nature to these haplotypes, respectively. This association persisted after controlling for multiple comparisons. CONCLUSION Our results confirm an association of HLA-DRB1 and -DQB1 alleles and haplotypes with PCOS susceptibility in Bahraini Arabs, further underscoring the immunological/inflammatory nature of this disorder.
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Murali V, Rathika C, Ramgopal S, Padma Malini R, Arun Kumar MJ, Neethi Arasu V, Jeyaram Illiayaraja K, Balakrishnan K. Susceptible and protective associations of HLA DRB1*/DQB1* alleles and haplotypes with ischaemic stroke. Int J Immunogenet 2016; 43:159-65. [PMID: 27105925 DOI: 10.1111/iji.12266] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 03/10/2016] [Accepted: 04/04/2016] [Indexed: 11/30/2022]
Abstract
Stroke has emerged as the second commonest cause of mortality worldwide and is a major public health problem. For the first time, we present here the association of human leucocyte antigen (HLA)-DRB1*/DQB1* alleles and haplotypes with ischaemic stroke in South Indian patients. Ischaemic stroke (IS) cases and controls were genotyped for HLA-DRB1*/DQB1* alleles by polymerase chain reaction sequence-specific primers (PCR-SSP) method. The frequencies of HLA class II alleles such as DRB1*04, DRB1*07, DRB1*11, DRB1*12, DRB1*13, DQB1*02 and DQB1*07 were high in IS patients than in the age- and gender-matched controls, suggesting that the individuals with these alleles are susceptible to ischaemic stroke in South India. The frequencies of alleles such as DRB1*03, DRB1*10, DRB1*14, DQB1*04 and DQB1*05 were less in IS cases than in the controls, suggesting a protective association. Haplotypes DRB1*04-DQB1*0301, DRB1*07-DQB1*02, DRB1*07-DQB1*0301, DRB1*11-DQB1*0301 and DRB1*13-DQB1*06 were found to be high in IS patients conferring susceptibility. The frequency of haplotype DRB1*10-DQB1*05 was high in controls conferring protection. IS-LVD and gender-stratified analysis too confirmed these susceptible and protective associations. Thus, HLA-DRB1*/DQB1* alleles and haplotypes strongly predispose South Indian population to ischaemic stroke. Further studies in different populations with large sample size or the meta-analysis are needed to explain the exact mechanism of associations of HLA gene(s) with IS.
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Affiliation(s)
- V Murali
- Department of Biotechnology & Genetic Engineering, School of Biotechnology, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - C Rathika
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | - S Ramgopal
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | - R Padma Malini
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | | | | | | | - K Balakrishnan
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
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Jazairi B, Khansaa I, Ikhtiar A, Murad H. Frequency of HLA-DRB1 and HLA-DQB1 Alleles and Haplotype Association in Syrian Population. Immunol Invest 2016; 45:172-9. [PMID: 26853713 DOI: 10.3109/08820139.2015.1131293] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The study of Human Leukocyte Antigen (HLA) system is very important in health and diseases. As the HLA loci are the most polymorphic in the human genome, it plays a very important role in the immune responses to self and nonself antigens. In the light of the growing importance of typing the HLA alleles in transplantation, autoimmune diseases, cancer, and many other diseases, we studied 225 unrelated healthy Syrian subjects for their HLA class II genotypes in an attempt to reveal the distribution of the HLA (DRB1-DQB1) alleles in the general Syrian population. Our results revealed that the most common alleles for the DRB1 locus were DRB1*11 (26.4%), DRB1*04 (14%), and DRB1*07 (12%). However, the most frequent alleles for the DQB1 locus were DQB1*03 (40.9%) and DQB1*05 (25.1%). The frequent of two-locus haplotypes carry the most frequent alleles at these loci. The most frequently detected class II ''haplotypes'' are DRB1*11-DQB1*03 (8.9%), DRB1*01-DQB1*05 (3.6%), and DRB1*04-DQB1*03 (2.7%). Compared with other populations, our result, deduced from the analysis of genetic distances and the construction of neighbor-joining (NJ) dendrogram, and principal component analysis (PCA) indicates that Syrians are related to Middle Eastern populations. Our data about the Syrian population will aid researchers in studying the relation of HLA class II with different diseases in a Syrian population and will add to the available international literature associated with these loci.
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Affiliation(s)
- Batoul Jazairi
- a Molecular Biology and Biotechnology Department , Atomic Energy Commission , Damascus , Syria
| | - Issam Khansaa
- a Molecular Biology and Biotechnology Department , Atomic Energy Commission , Damascus , Syria
| | - Adnan Ikhtiar
- a Molecular Biology and Biotechnology Department , Atomic Energy Commission , Damascus , Syria
| | - Hossam Murad
- a Molecular Biology and Biotechnology Department , Atomic Energy Commission , Damascus , Syria
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Mansoori Derakhshan S, Zeinali Sehrig F, Sohrabi N, Shiva S, Baradaran B, Shekari Khaniani M. The Association between Human Leukocyte Antigen Class II DR3-DQ2 Haplotype and Type 1 Diabetes in Children of the East Azerbaijan State of Iran. IRANIAN RED CRESCENT MEDICAL JOURNAL 2015; 17:e28380. [PMID: 26473079 PMCID: PMC4601240 DOI: 10.5812/ircmj.28380] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 06/12/2015] [Accepted: 07/13/2015] [Indexed: 12/03/2022]
Abstract
Background: Type 1 diabetes mellitus (T1D) is an autoimmune disease. Several associations between human leukocyte antigen (HLA) complex and T1D were found in various populations. Associations with various HLA types depend on the investigated populations. However, such associations have not yet been investigated in the East Azerbaijan state of Iran with Turkish ethnicity. Objectives: The aims of the current study was to describe T1D genetic susceptibility conferred by HLA class II alleles (DRB1*0301, DQA1*0501 and DQB1*0201) and to determine haplotype frequencies among T1D patients. Patients and Methods: This study was a case-control study. The number of samples was determined using the Cochran formula. Eighty unrelated T1D patients, including 42 (52.5%) females and 38 (47.5%) males, were randomly recruited from the East Azerbaijan state of Iran. Typing of HLA was performed by polymerase chain reaction-sequence-specific priming (PCR-SSP) on DNA extracted from peripheral blood mononuclear cells of 80 unrelated patients and 80 unrelated healthy control donors, who were selected randomly. For haplotype analysis, the logistic regression model was performed that allows joint estimation of Single-nucleotide polymorphisms (SNPs) via haplotypes. Results: The frequency of drb1*0301 (82.5% vs. 11.3%), dqa1*0501 (82.5% vs. 36.3%) and dqb1*0201 (81.3% vs. 35%) were significantly higher among patients compared with that of healthy subjects. Conclusions: Our investigation demonstrated that there is a highly significant association between the studied alleles and T1D. It can be construed that haplotype HLA-DR3-DQ2 has a very modest effect with respect to the risk of T1D.
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Affiliation(s)
- Sima Mansoori Derakhshan
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, IR Iran
- Department of Medical Genetic, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, IR Iran
| | | | - Nasrin Sohrabi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, IR Iran
- Department of Medical Genetic, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, IR Iran
| | - Siamak Shiva
- Department of Pediatrics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, IR Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, IR Iran
| | - Mahmoud Shekari Khaniani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, IR Iran
- Department of Medical Genetic, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, IR Iran
- Corresponding Author: Mahmoud Shekari Khaniani, Department of Medical Genetic, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, IR Iran. Tel: +98-4113371587, Fax: +98-4113371587, E-mail:
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Mrad M, Fekih-Mrissa N, Mansour M, Seyah A, Riahi A, Gritli N, Mrissa R. Association of HLA-DR/DQ polymorphism with chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) in Tunisian patients. Transfus Apher Sci 2013; 49:623-6. [DOI: 10.1016/j.transci.2013.07.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 07/26/2013] [Indexed: 11/28/2022]
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14
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Ghazarian L, Diana J, Simoni Y, Beaudoin L, Lehuen A. Prevention or acceleration of type 1 diabetes by viruses. Cell Mol Life Sci 2013; 70:239-55. [PMID: 22766971 PMCID: PMC11113684 DOI: 10.1007/s00018-012-1042-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 05/22/2012] [Accepted: 05/24/2012] [Indexed: 12/31/2022]
Abstract
Type 1 diabetes is an autoimmune disease characterized by the destruction of insulin-producing pancreatic β-cells. Even though extensive scientific research has yielded important insights into the immune mechanisms involved in pancreatic β-cell destruction, little is known about the events that trigger the autoimmune process. Recent epidemiological and experimental data suggest that environmental factors are involved in this process. In this review, we discuss the role of viruses as an environmental factor on the development of type 1 diabetes, and the immune mechanisms by which they can trigger or protect against this pathology.
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Affiliation(s)
- Liana Ghazarian
- Hôpital Saint Vincent de Paul/Cochin, Batiment Petit, 82 Avenue Denfert-Rochereau, 75014 Paris, France
| | - Julien Diana
- Hôpital Saint Vincent de Paul/Cochin, Batiment Petit, 82 Avenue Denfert-Rochereau, 75014 Paris, France
| | - Yannick Simoni
- Hôpital Saint Vincent de Paul/Cochin, Batiment Petit, 82 Avenue Denfert-Rochereau, 75014 Paris, France
| | - Lucie Beaudoin
- Hôpital Saint Vincent de Paul/Cochin, Batiment Petit, 82 Avenue Denfert-Rochereau, 75014 Paris, France
| | - Agnès Lehuen
- Hôpital Saint Vincent de Paul/Cochin, Batiment Petit, 82 Avenue Denfert-Rochereau, 75014 Paris, France
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15
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Cano P, Testi M, Andreani M, Khoriaty E, Monsef JB, Galluccio T, Troiano M, Fernandez-Vina M, Inati A. HLA population genetics: a Lebanese population. ACTA ACUST UNITED AC 2012; 80:341-55. [DOI: 10.1111/j.1399-0039.2012.01936.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Pedro Cano
- MD Anderson Cancer Center; Houston; TX; USA
| | - Manuela Testi
- Laboratory of Immunogenetics; IME Foundation at Polyclinic of Tor Vergata; Rome; Italy
| | - Marco Andreani
- Laboratory of Immunogenetics; IME Foundation at Polyclinic of Tor Vergata; Rome; Italy
| | | | | | - Tiziana Galluccio
- Laboratory of Immunogenetics; IME Foundation at Polyclinic of Tor Vergata; Rome; Italy
| | - Maria Troiano
- Laboratory of Immunogenetics; IME Foundation at Polyclinic of Tor Vergata; Rome; Italy
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16
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Huang CJ, Liao HT, Yeh GC, Hung KL. Distribution of HLA-DQB1 alleles in patients with Kleine-Levin syndrome. J Clin Neurosci 2012; 19:628-30. [PMID: 22285112 DOI: 10.1016/j.jocn.2011.08.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 08/23/2011] [Indexed: 10/14/2022]
Abstract
Kleine-Levin syndrome (KLS) is a rare disorder characterized by recurrent episodes of hypersomnia, cognitive or behavior disturbances, compulsive eating behavior, and hypersexuality. The etiology of KLS remains unknown even though its clinical symptoms suggest an underlying autoimmune process. In this study, we analyzed the human leukocyte antigen (HLA) typing alleles in Taiwanese patients with KLS using the polymerase chain reaction sequence-specific priming technique. We report that an immunoresponsive HLA-DQB1, DQB1∗0602, was detected in significant quantities in patients with KLS (three of 12, p=0.046) and could elevate the risk of KLS (odds ratio, 1.143; 95% confidence interval, 0.0982-1.329). In conclusion, an identification of genomic susceptibility to KLS will be helpful in determining the immunospecific targeted therapies for patients with KLS.
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Affiliation(s)
- Chi-Jung Huang
- Department of Medical Research, Cathay General Hospital, Taipei, Taiwan
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17
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Hajjej A, Hajjej G, Almawi WY, Kaabi H, El-Gaaied A, Hmida S. HLA class I and class II polymorphism in a population from south-eastern Tunisia (Gabes Area). Int J Immunogenet 2011; 38:191-9. [PMID: 21385325 DOI: 10.1111/j.1744-313x.2011.01003.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The gene frequencies of HLA class I and class II alleles were investigated in 95 healthy Tunisian individuals from Gabes. Our aim was to compare the genetic relationship between Gabesians and Mediterraneans and sub-Sahara Africans using genetic distances, Neighbour-Joining dendrograms, correspondence and haplotypes analysis, thereby providing additional information about evolutionary history of modern-day Tunisians. Subjects were unrelated and of both genders, and HLA class I and class II genes were genotyped using the polymerase chain reaction-sequence specific primer (PCR-SSO) technique. Our data show that south-eastern Tunisians (Gabes area) are related to present-day North Africans (Algerians, Moroccans, Tunisians) and Iberians (Spaniards, Basques), and along with other North Africans, appear to be genetically related to Berbers, an indication that the Arab invasion (7th-11th centuries) of North Africa had minimal contribution on the HLA makeup of North Africans. On the other hand, Iberians including Spaniards and Basques show relatedness to (native Tunisian) Berbers, suggesting that the gene flow of 7th century AD invaders was also low in Iberians. In conclusion, the successive invasions of North Africa in general, and Tunisia in particular, did not modify markedly the genetic makeup of present-day Tunisians. With the exception of Greeks who have a sub-Saharan genetic profile, all Mediterranean populations depict a typical mediterranean substratum.
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Affiliation(s)
- A Hajjej
- National Blood Transfusion Center, Rue Djebel Lakhdhar-Bab Saadoun, Tunis, Tunisia.
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18
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Association between HLA-DRB1, HLA-DRQB1 alleles, and CD4+CD28null T cells in a Chinese population with coronary heart disease. Mol Biol Rep 2010; 38:1675-9. [DOI: 10.1007/s11033-010-0279-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 09/02/2010] [Indexed: 10/19/2022]
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19
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Benedek G, Paperna T, Avidan N, Lejbkowicz I, Oksenberg JR, Wang J, Brautbar C, Israel S, Miller A. Opposing effects of the HLA-DRB1*0301-DQB1*0201 haplotype on the risk for multiple sclerosis in diverse Arab populations in Israel. Genes Immun 2010; 11:423-31. [DOI: 10.1038/gene.2010.20] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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20
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Al-Ghoury ABA, El-Hamshary EM, Azazy AA, Hussein EM, Rayan HZ. HLA class II alleles: susceptibility or resistance to cystic echinococcosis in Yemeni patients. Parasitol Res 2010; 107:355-61. [DOI: 10.1007/s00436-010-1868-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2009] [Accepted: 04/01/2010] [Indexed: 11/30/2022]
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Farjadian S, Ota M, Inoko H, Ghaderi A. The genetic relationship among Iranian ethnic groups: an anthropological view based on HLA class II gene polymorphism. Mol Biol Rep 2009; 36:1943-50. [PMID: 18979226 DOI: 10.1007/s11033-008-9403-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2008] [Accepted: 10/20/2008] [Indexed: 10/21/2022]
Abstract
Highly polymorphic human leukocyte antigen (HLA) genes are considered as useful markers by molecular anthropologists to determine genetic relationship among populations. This review summarizes the results of molecular analyses of HLA class II gene polymorphism in 816 DNA samples from 11 Iranian ethnic groups. The genetic relationship of Iranians to Asians and Europeans has also been reported here. The results of this study revealed a close genetic relationship among Iranian subpopulations which were well separated from other Asian and European populations, however, a genetic similarity was observed among Iranians, Macedonians, Greeks, and Italians.
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Affiliation(s)
- Shirin Farjadian
- Immunology department, Shiraz University of Medical Sciences, Shiraz, Iran.
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22
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Mahdi N, Al-Subaie AM, Al-Ola K, Al-Irhayim AQ, Ali ME, Al-Irhayim Z, Almawi WY. HLA DRB1*130101-DQB1*060101 haplotype is associated with acute chest syndrome in sickle cell anemia patients. ACTA ACUST UNITED AC 2009; 73:245-9. [DOI: 10.1111/j.1399-0039.2008.01189.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Influence of common and specific HLA-DRB1/DQB1 haplotypes on genetic susceptibilities of three distinct Arab populations to type 1 diabetes. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2008; 16:136-8. [PMID: 19005023 DOI: 10.1128/cvi.00215-08] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The contribution of HLA DRB-DQB to type 1 diabetes (T1D) in Bahrainis, Lebanese, and Tunisians was investigated. DRB1*030101-DQB1*0201 was a locus that conferred susceptibility in three populations, while DRB1*040101-DQB1*0302 was a locus that conferred susceptibility only in Tunisians and Bahrainis. The DRB1*100101-DQB1*050101 (Bahrainis) and DRB1*150101-DQB1*060101 (Lebanese) loci were largely protective. The contribution of HLA to T1D must be evaluated with regard to ethnic background.
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Jasti S, Rakh S, Pantula V, Murthy KJR, Valluri VL. Genetic affinity of two south Indian ethnic groups with other populations. Int J Immunogenet 2008; 35:243-9. [DOI: 10.1111/j.1744-313x.2008.00763.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Al-Ola K, Mahdi N, Al-Subaie AM, Ali ME, Al-Absi IK, Almawi WY. Evidence for HLA class II susceptible and protective haplotypes for osteomyelitis in pediatric patients with sickle cell anemia. ACTA ACUST UNITED AC 2008; 71:453-7. [DOI: 10.1111/j.1399-0039.2008.01012.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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26
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Frequencies of HLA-DRB1 in Iranian Normal Population and in Patients with Acute Lymphoblastic Leukemia. Arch Med Res 2008; 39:205-8. [DOI: 10.1016/j.arcmed.2007.09.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2007] [Accepted: 09/13/2007] [Indexed: 11/20/2022]
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27
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Nasidze I, Quinque D, Rahmani M, Alemohamad SA, Stoneking M. Close genetic relationship between Semitic-speaking and Indo-European-speaking groups in Iran. Ann Hum Genet 2008; 72:241-52. [PMID: 18205892 DOI: 10.1111/j.1469-1809.2007.00413.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
As part of a continuing investigation of the extent to which the genetic and linguistic relationships of populations are correlated, we analyzed mtDNA HV1 sequences, eleven Y chromosome bi-allelic markers, and 9 Y-STR loci in two neighboring groups from the southwest of Iran who speak languages belonging to different families: Indo-European-speaking Bakhtiari, and Semitic-speaking Arabs. Both mtDNA and the Y chromosome, showed a close relatedness of these groups with each other and with neighboring geographic groups, irrespective of the language spoken. Moreover, Semitic-speaking North African groups are more distant genetically from Semitic-speaking groups from the Near East and Iran. Thus, geographical proximity better explains genetic relatedness between populations than does linguistic relatedness in this part of the world.
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Affiliation(s)
- I Nasidze
- Max Planck Institute for Evolutionary Anthropology, Department of Evolutionary Genetics, Deutscher Platz 6, Leipzig, Germany.
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28
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Michailidou EZ, Belazi MA, Markopoulos AK, Tsatsos MI, Mourellou ON, Antoniades DZ. Epidemiologic survey of pemphigus vulgaris with oral manifestations in northern Greece: retrospective study of 129 patients. Int J Dermatol 2007; 46:356-61. [PMID: 17442072 DOI: 10.1111/j.1365-4632.2006.03044.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To evaluate the epidemiology of pemphigus vulgaris (PV) in a Greek population and to compare it with other countries. MATERIALS AND METHODS A retrospective study was conducted based on the records of 129 patients (41 males and 88 females) with PV who visited the Department of the Oral Medicine and Maxillofacial Pathology, Aristotle University of Thessaloniki, Greece and the State Hospital for Skin and Venereal Diseases of Thessaloniki, Greece, between 1985 and 2004. A group of 73 individuals was used as controls. RESULTS The average annual incidence was found to be eight patients per year. The male to female ratio was 1 : 2.25. The difference in the age of onset between the two genders was statistically significant in marginal levels (P = 0.05). In addition, 86.1% of the patients showed oral lesions only, 13.3% oral and skin lesions and 1.3% manifested oral, skin, and ocular lesions. Twenty-eight of the 88 females were in the premenopausal period-of-life. Additionally, 19 males were farmers who had daily contact with organophosphoric pesticides. Co-existing pathologic conditions were present in 75 of the 129 patients, and of these 75 patients six (8%) were diabetics, 15 (20%) presented with hypertension, two (2.6%) faced problems from their thyroid gland, and 10 (13.3%) of the patients complained of allergic reactions. CONCLUSIONS The results of this study demonstrated a relatively high incidence of PV in northern Greece compared with that in other countries. The disease most frequently occurred in the sixth decade-of-life and the majority of the patients manifested oral lesions. Further epidemiological studies are needed to elucidate whether this region is constituted from population groups with high susceptibility to PV.
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Affiliation(s)
- Evangelia Z Michailidou
- Department of Oral Medicine and Maxillofacial Pathology, Aristotle University of Thessaloniki, State Hospital of Skin and Venereal Diseases, Thessaloniki, Greece
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Almawi WY, Wakim-Ghorayeb SF, Arekat MR, Najm P, Keleshian SH, Al-Sayed N, Blanchon B, Samaha HR, Irani-Hakime N. Association of selective HLA class II susceptibility-conferring and protective haplotypes with type 2 diabetes in patients from Bahrain and Lebanon. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2006; 13:1296-8. [PMID: 16988007 PMCID: PMC1656545 DOI: 10.1128/cvi.00206-06] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The association of HLA class II with type 2 diabetes (T2DM) was investigated in Bahraini and Lebanese subjects. DRB1*070101 (Lebanese and Bahraini) and DQB1*0201 (Lebanese) were susceptibility-conferring alleles, and unique susceptibility-conferring/protective haplotypes were found in both patient groups. Regression analysis confirmed that DRB1*070101-DQB1*0201 (Bahraini) and DRB1*110101-DQB1*0201 (Lebanese) were susceptibility-conferring haplotypes.
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Affiliation(s)
- Wassim Y Almawi
- Department of Medical Biochemistry, College of Medicine and Medical Sciences, Arabian Gulf University, P.O. Box 22979, Manama, Bahrain.
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Yang G, Deng YJ, Hu SN, Wu DY, Li SB, Zhu J, Zhu BF, Liu Y. HLA-A, -B, and -DRB1 polymorphism defined by sequence-based typing of the Han population in Northern China. ACTA ACUST UNITED AC 2006; 67:146-52. [PMID: 16441486 DOI: 10.1111/j.1399-0039.2006.00529.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
DNA typing for human leukocyte antigen (HLA)-A, -B and -DRB1 was performed using polymerase chain reaction-sequence-based typing method on 618 randomly selected healthy individuals of the Han population in Northern China. Allele frequencies and haplotypes were statistically analyzed. A total of 84 HLA-A alleles, 143 B alleles, and 122 DRB1 alleles were detected, and 853 A-B-DRB1 haplotypes, 473 A-B haplotypes, and 551 B-DRB1 haplotypes were statistically inferred. Statistical analysis of three-locus haplotypes showed that A*0207-B*4601-DRB1*0901 (3.06%) was the most predominant. Gene frequencies and haplotypic associations within HLA-A, -B, and -DRB1 loci were determined at a high-resolution (four digit) allelic level and should provide useful information in anthropology, bone marrow donor registry, legal medicine, and disease association studies.
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Affiliation(s)
- G Yang
- The National Laboratory of the Ministry of Health for Forensic Sciences, Xi'an Jiaotong University, Xi'an, China
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