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Shahzad F, Tahir R, Shahzad F, Afzal N. The possible protective role of HLA B27 and relevant immune markers in Juvenile Idiopathic Arthritis patients. Pak J Med Sci 2024; 40:835-840. [PMID: 38827853 PMCID: PMC11140352 DOI: 10.12669/pjms.40.5.7915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 06/12/2023] [Accepted: 01/29/2024] [Indexed: 06/05/2024] Open
Abstract
Background & Objectives JIA is a disease with different immunological characteristics and a complicated genetic foundation. HLA B27 is a risk factor for the development of JIA, and its impact on immunopathogenesis of the disease is also an area of interest. To determine whether HLA B27 and immune markers varied between JIA patients and healthy population. Methods This comparative cross-sectional study was conducted at Immunology Department of University of Health sciences (UHS), Lahore from February 2018 till August 2021. A total of (71) JIA patients and (34) healthy controls were enrolled. B cells were enumerated by flowcytometry, ELISA was used for serum cytokines estimation and HLA B27 allele was detected by SPSS polymerase chain reaction. Results The HLA B27 allele was significantly more in the control group than in the patient group, suggesting it is a protective allele to prevent JIA. Peripheral blood B cell counts and percentages were significantly lower in the HLA B27 positive group than in the HLA B27 negative group of control population. Serum cytokine levels were not significantly different between the HLA B27 positive and HLA B27 negative allele of the two study populations. Conclusion In this study B cells are different between the two groups of control population however; serum cytokines are comparable between the study groups. Though, it was indicated that HLA B27 may be a preventive allele in the onset of JIA.
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Affiliation(s)
- Farhana Shahzad
- Farhana Shahzad, MBBS, M.Phil. Immunology Assistant Professor of Immunology University of Child Health Sciences, The Children’s Hospital, Lahore, Pakistan
| | - Romeeza Tahir
- Romeeza Tahir, MSC, M.Phil, PhD Immunology Assistant Professor of Immunology, University of Health Sciences, Lahore, Pakistan
| | - Faheem Shahzad
- Faheem Shahzad, Senior Lab Manager, University of Health Sciences, Lahore, Pakistan
| | - Nadeem Afzal
- Nadeem Afzal Professor of Immunology, Akhtar Saeed Medical College, Lahore, Pakistan
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2
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Naemi FMA, Al-Adwani S, Al-Khatabi H, Al-Nazawi A. Association between the HLA genotype and the severity of COVID-19 infection among South Asians. J Med Virol 2021; 93:4430-4437. [PMID: 33830530 PMCID: PMC8251353 DOI: 10.1002/jmv.27003] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/04/2021] [Accepted: 04/06/2021] [Indexed: 12/21/2022]
Abstract
Regional variations are found in the incidence and severity of the COVID-19 infection. Human leukocyte antigen (HLA) polymorphism is one of the genetic factors that might have an impact on the outcome of the disease. This study explored the association between the HLA genotype and the severity of COVID-19 among patients from South Asia. Blood samples from 95 Asians (Bangladeshis, Indians, and Pakistanis) with COVID-19 were collected. The patients were divided according to the severity of their infection: mild (N = 64), severe (N = 31), and fatal (N = 20). DNA was extracted from all samples, and HLA genotyping was performed for both class I (A, B, and C) and class II (DRB1, DQA1, and DQB1) using the PCR-rSSO (polymerase chain reaction-reverse sequence-specific oligonucleotide) molecular method. The frequency of HLA-B*51 was significantly higher among patients in the fatal group than among those in the mild infection group (15% vs. 4.7%, p = 0.027). Additionally, the frequency of HLA-B*35 was significantly higher in the mild infection group than in the fatal group (21.1% vs. 7.5%, p = 0.050 [a borderline p-value]). In terms of HLA class II, DRB1*13 was significantly observed in the fatal group than in the mild infection group (17.5% vs. 11.3%, p = 0.049). However, the p-value for all alleles became insignificant after a statistical correction for the p-values (pc = 0.216, pc = 0.4, and pc = 0.49, respectively). Compared with all published data, this study highlights that the association between the HLA system and the COVID-19 outcome might be ethnic-dependent. Genetic variation between populations must be examined on a wider scale to assess infection prognosis and vaccine effectiveness.
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Affiliation(s)
- Fatmah M A Naemi
- Laboratory of Histocompatibility and Immunogenetics, King Fahd General Hospital, Ministry of Health, Jeddah, Kingdom of Saudi Arabia
| | - Shurooq Al-Adwani
- Laboratory of Histocompatibility and Immunogenetics, King Fahd General Hospital, Ministry of Health, Jeddah, Kingdom of Saudi Arabia
| | - Heba Al-Khatabi
- Center of Excellence in Genomic Medicine Research, King Fahd Medical Research Center, King Abdul-Aziz University, Jeddah, Kingdom of Saudi Arabia
| | - Ashwaq Al-Nazawi
- Public Health VBD, Ministry of Health, Jeddah, Kingdom of Saudi Arabia
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Noureen N, Shah FA, Lisec J, Usman H, Khalid M, Munir R, Zaidi N. Revisiting the association between human leukocyte antigen and end-stage renal disease. PLoS One 2020; 15:e0238878. [PMID: 32915858 PMCID: PMC7485852 DOI: 10.1371/journal.pone.0238878] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 08/25/2020] [Indexed: 11/28/2022] Open
Abstract
Multiple works have studied possible associations between human leukocyte antigen (HLA) alleles and end stage renal disease (ESRD) showing, however, contradictory and inconsistent results. Here, we revisit the association between ESRD and HLA antigens, comparing HLA polymorphism (at HLA-A, -B, -C, -DRB1, -DQB1 and DQA1 loci) in ESRD patients (n = 497) and controls (n = 672). Our data identified several HLA alleles that displayed a significant positive or negative association with ESRD. We also determined whether heterozygosity or homozygosity of the ESRD-associated HLA alleles at different loci could modify the prevalence of the disease. Few HLA allele combinations displayed significant associations with ESRD, among which A*3_26 combination showed the highest strength of association (OR = 4.488, P≤ 0.05) with ESRD. Interestingly, the age of ESRD onset was not affected by HLA allele combinations at different loci. We also performed an extensive literature analysis to determine whether the association of HLA to ESRD can be similar across different ethnic groups. Our analysis showed that at least certain HLA alleles, HLA-A*11, HLA-DRB1*11, and HLA-DRB1*4, display a significant association with ESRD in different ethnic groups. The findings of our study will help in determining possible protective or susceptible roles of various HLA alleles in ESRD.
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Affiliation(s)
- Naila Noureen
- Cancer Biology Lab, MMG, University of the Punjab, Lahore, Pakistan
- Cancer Research Centre (CRC), University of the Punjab, Lahore, Pakistan
| | - Farhad Ali Shah
- Cancer Biology Lab, MMG, University of the Punjab, Lahore, Pakistan
- Cancer Research Centre (CRC), University of the Punjab, Lahore, Pakistan
| | - Jan Lisec
- Bundesanstalt für Materialforschung und -prüfung (BAM), Department of Analytical Chemistry, Berlin, Germany
| | - Hina Usman
- MMG, The Women University Multan, Multan, Pakistan
| | | | - Rimsha Munir
- Cancer Biology Lab, MMG, University of the Punjab, Lahore, Pakistan
- Cancer Research Centre (CRC), University of the Punjab, Lahore, Pakistan
- Hormone Lab, Lahore, Pakistan
| | - Nousheen Zaidi
- Cancer Biology Lab, MMG, University of the Punjab, Lahore, Pakistan
- Cancer Research Centre (CRC), University of the Punjab, Lahore, Pakistan
- * E-mail: ,
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Taheri-Anganeh M, Amiri A, Movahedpour A, Khatami SH, Ghasemi Y, Savardashtaki A, Mostafavi-Pour Z. In silico Evaluation of PLAC1-fliC As a Chimeric Vaccine against Breast Cancer. IRANIAN BIOMEDICAL JOURNAL 2020; 24:173-82. [PMID: 31952435 PMCID: PMC7275624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 06/24/2019] [Indexed: 11/12/2023]
Abstract
Background Breast cancer is one of the most prevalent cancers among women. Common cancer treatment methods are not effective enough, and there is a need for a more efficient treatment procedure. Cancer vaccine is a novel immunotherapy method that stimulates humoral and/or cellular immunity against cancer. Placenta-specific protein 1 (PLAC1) is a cancer/testis antigen, prevalent in breast cancer and rarely found in normal tissues. FliC, as a bacterial adjuvant, when fused to PLAC1 can elicit humoral and cellular responses. Therefore, PLAC1-fliC is a chimeric protein, which can be considered a suitable candidate against breast cancer. Methods ProtParam was used to evaluate the physicochemical properties of PLAC1-fliC. Second structures were determined using the GOR V server. PLAC1-fliC 3D structure was modeled by Phyre2, and it was refined using GalaxyWEB. The refined model was submitted to RAMPAGE, PROCHECK, and ProSA-web for validation. Antigenicity and allergenicity of the construct were predicted by ANTIGENpro, VaxiJen, AllergenFP, and SDAP databases. Then MHC-I- and MHC-II-binding epitopes of PLAC1-fliC were forecasted by NetMHC 4.0 and NetMHCII 2.3 Servers. Finally, Ellipro and CTLpred were employed to predict B-cell and cytotoxic T lymphocyte epitopes. Results The construct was evaluated as a stable fusion protein, which could be antigenic and could stimulate B and T cells against breast cancer. Conclusion PLAC1-fliC, as a cancer vaccine candidate, might be suitable and specific for breast cancer, which could evoke humoral and cellular immunity against this type of tumor.
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Affiliation(s)
- Mortaza Taheri-Anganeh
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Amiri
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Movahedpour
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyyed Hossein Khatami
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Younes Ghasemi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amir Savardashtaki
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zohreh Mostafavi-Pour
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Maternal-Fetal Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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5
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Taheri-Anganeh M, Amiri A, Movahedpour A, Khatami SH, Ghasemi Y, Savardashtaki A, Mostafavi-Pour Z. In silico Evaluation of PLAC1-fliC As a Chimeric Vaccine against Breast Cancer. IRANIAN BIOMEDICAL JOURNAL 2019. [PMID: 31952435 PMCID: PMC7275624 DOI: 10.29252/ibj.24.3.173] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Background Breast cancer is one of the most prevalent cancers among women. Common cancer treatment methods are not effective enough, and there is a need for a more efficient treatment procedure. Cancer vaccine is a novel immunotherapy method that stimulates humoral and/or cellular immunity against cancer. Placenta-specific protein 1 (PLAC1) is a cancer/testis antigen, prevalent in breast cancer and rarely found in normal tissues. FliC, as a bacterial adjuvant, when fused to PLAC1 can elicit humoral and cellular responses. Therefore, PLAC1-fliC is a chimeric protein, which can be considered a suitable candidate against breast cancer. Methods ProtParam was used to evaluate the physicochemical properties of PLAC1-fliC. Second structures were determined using the GOR V server. PLAC1-fliC 3D structure was modeled by Phyre2, and it was refined using GalaxyWEB. The refined model was submitted to RAMPAGE, PROCHECK, and ProSA-web for validation. Antigenicity and allergenicity of the construct were predicted by ANTIGENpro, VaxiJen, AllergenFP, and SDAP databases. Then MHC-I- and MHC-II-binding epitopes of PLAC1-fliC were forecasted by NetMHC 4.0 and NetMHCII 2.3 Servers. Finally, Ellipro and CTLpred were employed to predict B-cell and cytotoxic T lymphocyte epitopes. Results The construct was evaluated as a stable fusion protein, which could be antigenic and could stimulate B and T cells against breast cancer. Conclusion PLAC1-fliC, as a cancer vaccine candidate, might be suitable and specific for breast cancer, which could evoke humoral and cellular immunity against this type of tumor.
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Affiliation(s)
- Mortaza Taheri-Anganeh
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Amiri
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Movahedpour
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyyed Hossein Khatami
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Younes Ghasemi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.,harmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amir Savardashtaki
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.,harmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zohreh Mostafavi-Pour
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Maternal-Fetal Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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6
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Kulski JK, AlSafar HS, Mawart A, Henschel A, Tay GK. HLA class I allele lineages and haplotype frequencies in Arabs of the United Arab Emirates. Int J Immunogenet 2019; 46:152-159. [PMID: 30892829 DOI: 10.1111/iji.12418] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 11/29/2018] [Accepted: 01/03/2019] [Indexed: 12/18/2022]
Abstract
The high degree of polymorphism of the HLA system provides suitable genetic markers to study the diversity and migration of different world populations and is beneficial for forensic identification, anthropology, transplantation and disease associations. Although the United Arab Emirates (UAE) population of about nine million people is heterogeneous, information is limited for the HLA class I allele and haplotype frequencies of the Bedouin ethnic group. We performed low-resolution PCR-SSP genotyping of three HLA class I loci at HLA-A, -B and -C for 95 unrelated healthy Bedouins from the cities of Al Ain and Abu Dhabi in the UAE. A total of 54 HLA allele lineages were detected; the most frequent low-resolution allele lineages at each HLA locus were A*02 (0.268), B*51 (0.163) and C*07 (0.216). The inferred estimates for the two most frequent HLA-A and HLA-B haplotypes were HLA-A*02 ~ HLA-B*50 (0.070) and HLA-A*02 ~ HLA-B*51 (0.051), and the most frequent 3-locus haplotype was HLA-A*02 ~ HLA-B*50 ~ HLA-C*06 (0.068). The HLA allele lineage frequencies of the UAE Arabs were compared to those previously reported for 70 other world populations, and a strong genetic similarity was detected between the UAE Arabs and the Saudi Arabians from the west with evidence of a limited gene flow between the UAE Arabs and Pakistani across the Gulf from the east, and the UAE Arabs and Omani from the south of the Gulf Peninsula.
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Affiliation(s)
- Jerzy K Kulski
- School of Psychiatry and Clinical Neurosciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Habiba S AlSafar
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Aurelie Mawart
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Andreas Henschel
- Department of Electrical Engineering and Computer Science, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Guan K Tay
- School of Psychiatry and Clinical Neurosciences, The University of Western Australia, Crawley, Western Australia, Australia.,Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
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7
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Martinez-Laso J, Ramirez-Puga A, Rivas-García E, Fernández-Tagarro E, Auyanet-Saavedra I, Guerra-Rodríguez R, Díaz-Novo N, García-Cantón C. North African-Mediterranean HLA genetic contribution in a population of the kidney transplant waiting list patients of Canary origin (Gran Canaria). HLA 2018; 92:12-23. [PMID: 29770608 DOI: 10.1111/tan.13298] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 04/10/2018] [Accepted: 05/09/2018] [Indexed: 11/30/2022]
Abstract
The peopling of the Canary Islands has been widely debated. The mitochondrial DNA and Y-chromosome data support the idea of a Berber genetic origin coming from the North of Africa (maternal) and a later contribution of the Spanish invaders (paternal). The frequencies of the HLA class II alleles from the Tenerife Island (another Canary Island) have previously been published, postulating a Berber and Atlantic/Iberian contributions to the current population. The HLA class I and class II allele frequencies, haplotype frequencies and phylogenetic comparisons were performed in 215 unrelated individuals from Gran Canaria Island (belonging to the kidney transplant waiting list), with at least three generations of ancestors from Canary Islands, in order to study the different ethnical HLA contributions to the genetic background of the Canary Islanders. Results showed the presence of a compound HLA haplotype of putative Phoenician-Berber origin, A*33:01-C*08:02-B*14:02-DRB1*03:01-DQB1*02:01, likely coming from the combination of haplotypes A*30:02-C*05:01-B*18:01-DRB1*03:01-DQB1*02:01 and A*33:01-C*08:02-B*14:02-DRB1*01:02-DQB1*05:01 of North African (probably Berber) and West Asian Mediterranean (probably Phoenician) origins, respectively. The latter haplotypes and others from the same origin (Berber/Phoenician) are also present in the population studied. Besides, other contributions from the North of Europe, North England-Iberian (Atlantic contribution), and Western Europe/Mediterraneans (Spanish colonization) are also discussed. These data conclude that the current genetic background of the Canary Islands inhabitants has been generated over the years by different ways with an original Phoenician-Berber substrate and several genetic contributions generated in different invasions.
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Affiliation(s)
- J Martinez-Laso
- Immunology Unit, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas, Spain
| | - A Ramirez-Puga
- Nephrology Service, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas, Spain
| | - E Rivas-García
- Immunology Unit, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas, Spain
| | - E Fernández-Tagarro
- Nephrology Service, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas, Spain
| | - I Auyanet-Saavedra
- Nephrology Service, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas, Spain
| | - R Guerra-Rodríguez
- Nephrology Service, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas, Spain
| | - N Díaz-Novo
- Nephrology Service, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas, Spain
| | - C García-Cantón
- Nephrology Service, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas, Spain
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Hernández EG, Granados J, Partida-Rodríguez O, Valenzuela O, Rascón E, Magaña U, Escamilla-Tilch M, López-Reyes A, Nieves-Ramírez M, González E, Morán P, Rojas L, Valadez A, Luna A, Estrada FJ, Maldonado C, Ximénez C. Prevalent HLA Class II Alleles in Mexico City Appear to Confer Resistance to the Development of Amebic Liver Abscess. PLoS One 2015; 10:e0126195. [PMID: 25938667 PMCID: PMC4418702 DOI: 10.1371/journal.pone.0126195] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 03/30/2015] [Indexed: 11/19/2022] Open
Abstract
Amebiasis is an endemic disease and a public health problem throughout Mexico, although the incidence rates of amebic liver abscess (ALA) vary among the geographic regions of the country. Notably, incidence rates are high in the northwestern states (especially Sonora with a rate of 12.57/100,000 inhabitants) compared with the central region (Mexico City with a rate of 0.69/100,000 inhabitants). These data may be related to host genetic factors that are partially responsible for resistance or susceptibility. Therefore, we studied the association of the HLA-DRB1 and HLA-DQB1 alleles with resistance or susceptibility to ALA in two Mexican populations, one each from Mexico City and Sonora. Ninety ALA patients were clinically diagnosed by serology and sonography. Genomic DNA was extracted from peripheral blood mononuclear cells. To establish the genetic identity of both populations, 15 short tandem repeats (STRs) were analyzed with multiplexed PCR, and the allelic frequencies of HLA were studied by PCR-SSO using LUMINEX technology. The allele frequencies obtained were compared to an ethnically matched healthy control group (146 individuals). We observed that both affected populations differed genetically from the control group. We also found interesting trends in the population from Mexico City. HLA-DQB1*02 allele frequencies were higher in ALA patients compared to the control group (0.127 vs 0.047; p= 0.01; pc= NS; OR= 2.9, 95% CI= 1.09-8.3). The less frequent alleles in ALA patients were HLA-DRB1*08 (0.118 vs 0.238 in controls; p= 0.01; pc= NS; OR= 0.42, 95% CI= 0.19-0.87) and HLA-DQB1*04 (0.109 vs 0.214; p= 0.02; pc= NS; OR= 0.40, 95% CI= 0.20-0.94). The haplotype HLA-DRB1*08/-DQB1*04 also demonstrated a protective trend against the development of this disease (0.081 vs. 0.178; p=0.02; pc=NS; OR= 0.40, 95% CI= 0.16-0.93). These trends suggest that the prevalent alleles in the population of Mexico City may be associated with protection against the development of ALA.
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Affiliation(s)
- Eric G. Hernández
- Laboratorio de Inmunología, Departamento de Medicina Experimental, Facultad de Medicina, UNAM, Mexico City, México
| | - Julio Granados
- División de Inmunogenética, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán (INCMNSZ), SSa, Mexico City, México
| | - Oswaldo Partida-Rodríguez
- Laboratorio de Inmunología, Departamento de Medicina Experimental, Facultad de Medicina, UNAM, Mexico City, México
| | - Olivia Valenzuela
- Departamento de Ciencias Químico-Biológicas, Universidad de Sonora, Hermosillo, Sonora, México
| | - Edgar Rascón
- Departamento de Ciencias Químico-Biológicas, Universidad de Sonora, Hermosillo, Sonora, México
| | - Ulises Magaña
- Departamento de Ciencias Químico-Biológicas, Universidad de Sonora, Hermosillo, Sonora, México
| | - Mónica Escamilla-Tilch
- División de Inmunogenética, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán (INCMNSZ), SSa, Mexico City, México
| | - Alberto López-Reyes
- Laboratorio de Sinovioanálisis Molecular, Instituto Nacional de Rehabilitación, SSa, Mexico City, México
| | - Miriam Nieves-Ramírez
- Laboratorio de Inmunología, Departamento de Medicina Experimental, Facultad de Medicina, UNAM, Mexico City, México
| | - Enrique González
- Laboratorio de Inmunología, Departamento de Medicina Experimental, Facultad de Medicina, UNAM, Mexico City, México
| | - Patricia Morán
- Laboratorio de Inmunología, Departamento de Medicina Experimental, Facultad de Medicina, UNAM, Mexico City, México
| | - Liliana Rojas
- Laboratorio de Inmunología, Departamento de Medicina Experimental, Facultad de Medicina, UNAM, Mexico City, México
| | - Alicia Valadez
- Laboratorio de Inmunología, Departamento de Medicina Experimental, Facultad de Medicina, UNAM, Mexico City, México
| | - Alexandra Luna
- Laboratorio de Biología Molecular, Escuela de Medicina, Universidad Panamericana, Mexico City, México
| | - Francisco J. Estrada
- Laboratorio de Biología Molecular, Escuela de Medicina, Universidad Panamericana, Mexico City, México
| | - Carmen Maldonado
- Laboratorio de Investigación en Inmunología y proteómica, Hospital Infantil de México Federico Gómez, SSa, Mexico City, México
| | - Cecilia Ximénez
- Laboratorio de Inmunología, Departamento de Medicina Experimental, Facultad de Medicina, UNAM, Mexico City, México
- * E-mail:
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Muazzam AG, Mansoor A, Ali L, Siddiqi S, Hameed A, Ajmal M, Mazhar K. Association of HLA-DRB1 and -DQB1alleles and haplotypes with rheumatoid arthritis in a Pakistani population. Arthritis Res Ther 2013; 15:R95. [PMID: 23968403 PMCID: PMC3978885 DOI: 10.1186/ar4275] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 08/22/2013] [Indexed: 12/02/2022] Open
Abstract
Introduction Rheumatoid arthritis is an autoimmune disease with poorly understood pathophysiology. Genetic components of disease etiology, especially human leukocyte antigen (HLA) associations, are well known. Ethnic differences account for a number of variations in disease association with the HLA locus and there seem to be differences in various studies regarding its genetic predisposition. This study was aimed at determining the contribution of DRB1 and DQB1 components of HLA class II in rheumatoid arthritis in a Pakistani cohort. Method For this study, 110 patients and 120 healthy controls from the same geographical area and matched ethnicity were enrolled. Blood DNA was isolated from all the subjects and HLA alleles were typed following allele specific amplification. Subsequently, haplotypes were generated and allelic and haplotype distribution frequencies were compared among the patients and controls using χ2 and Arlequin software. The data obtained by this analysis were also compared with other reported associations found in the Pakistani population by meta-analysis. Results HLA allelic status was determined among the patients and controls from the same geographical area to account for differences in ethnicity and environmental factors. Significant associations were found for alleles as well as haplotypes among the patients of rheumatoid arthritis. DRB1*10, DQB1*05 and DQB1*602 were found to be associated with disease susceptibility, whereas DRB1*11 and DQB1*02 had protective effect against the disease. Similarly, haplotype DRB1*10-DQB1*05 was associated disease risk, whereas DRB1*07-DQB1*02 and DRB1*11-DQB1*0301 had a protective effect. Conclusion There is a significant DRB1and DQB1 allele and haplotype association with rheumatoid arthritis susceptibility and protection.
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Tappuni AR, Tbakhi A, Sharquie KE, Hayani RK, Al-Kaisi A, Lafi A, Al-Araji A. A comparative study of the genetics of Behcet's disease in Iraq: international collaboration to transfer clinical and laboratory skills to Baghdad medical school and hospitals. Med Confl Surviv 2013; 29:57-68. [PMID: 23729098 DOI: 10.1080/13623699.2013.765201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A collaborative project funded by the Iraqi Research Fellowship Programme of the Council for Assisting Refugee Academics was set up to transfer laboratory and clinical skills in between three clinical research teams in the UK, Jordan and Iraq. The project was set up to study the genetics of the potentially debilitating condition, Behçet's Disease (BD). Blood samples were collected from: 38 BD patients, 28 patients with oral ulcers not related to BD and 32 healthy controls. All samples were analysed using Micro SSP HLA Class I B locus kit (B locus, generic). Logistic regression analysis revealed that samples positive for HLA-B51 were 7.4 times more likely to have BD than the healthy control subjects. The results of this study make a valuable addition to the scientific literature. Additional valuable outcomes include the intellectual exchange and transfer of skills in between the collaborating teams, which led to the establishment of an international research collaboration.
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Affiliation(s)
- A R Tappuni
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.
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Elbjeirami WM, Abdel-Rahman F, Hussein AA. Probability of finding an HLA-matched donor in immediate and extended families: the Jordanian experience. Biol Blood Marrow Transplant 2012; 19:221-6. [PMID: 23025986 DOI: 10.1016/j.bbmt.2012.09.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 09/15/2012] [Indexed: 11/30/2022]
Abstract
Information regarding the probability of finding HLA-matched related donor for a patient awaiting hematopoietic stem cell transplantation (HSCT) in developing countries is scanty. We performed a retrospective review of HLA genotypes and related data for 1254 consecutive patients and their families at King Hussein Cancer Center in Amman, Jordan, between 2003 and 2011 to evaluate the chance of finding HLA-matched donor. The median family size was 5 for all patients in the study (range, 1-14), and the average number of donors was 1.4 ± 0.9 for pediatric patients and 1.6 ± 0.9 for adults. Overall, the probability of finding an HLA-matched related donor at our center was 65.5% (60.6% in pediatric patients and 74% in adults). Of the total identified donors, 18% were nonsibling donors after an immediate and/or extended family search in the pediatric group, and 6% were nonsibling donors in the adult group. Overall, 13% of donors were nonsibling donors. We conclude that the probability of finding a matched related donor for HSCT in Jordan is much higher than that reported in Western countries and Asia (65% versus 25%). We expect a similar trend in other developing and Arab countries. We recommend integrating an extended family search before or concomitantly with an unrelated donor search.
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Affiliation(s)
- Wafa M Elbjeirami
- Department of Cellular Therapy and Applied Genomics, King Hussein Cancer Center, Amman, Jordan
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Rønningen KS, Yap SE, Brandal K, Stormyr A, Lie BA, Rasmussen T, Stray-Pedersen B, Akselsen HE. HLA-DRB1, -DQA1 and -DQB1 Alleles and Haplotypes in First-Generation Pakistani Immigrants in Norway. Scand J Immunol 2012; 75:426-30. [DOI: 10.1111/j.1365-3083.2011.02669.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shankarkumar U. Complexities and similarities of HLA antigen distribution in Asian subcontinent. INDIAN JOURNAL OF HUMAN GENETICS 2011; 16:108-10. [PMID: 21206696 PMCID: PMC3009419 DOI: 10.4103/0971-6866.73397] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- U Shankarkumar
- Scientist "D", National Institute of Immunohaematology, 13 Floor, K.E.M. Hospital, Parel, Mumbai - 400 012, India
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