Objective: The genetic basis of susceptibility to Henoch-Schönlein purpura (HSP) may be conferred by a number of gene loci, including the MHC. Associations between human leukocyte antigen (HLA) and disease can help to establish a basis for susceptibility and assist in the prediction of the outcome and clinical heterogeneity. We aimed to investigate the implications of the HLA-DRB1 locus and the susceptibility to HSP, and to determine if there are associations with joint, gastrointestinal, and renal manifestations of the disease.
Methods: We studied 110 Turkish patients (men/women: 66/44) with HSP. Patients and ethnically matched controls with respect to age and sex (n = 250) were HLA-DRB1 genotyped from DNA determined using molecular based methods.
Results: HLA-DRB1 genotype differences between patients with HSP and controls were observed. The frequency of HLA-DRB1 11/14 was higher [odds ratio (OR) 1.97, 95% confidence interval (95% CI) 1.25-3.12, p = 0.003; OR = 1.83, 95% CI = 1.02-3.28, p = 0.035, respectively] and the frequency of HLA-DRB1 10/17 was lower (OR = 1.04, 95% CI = 1.01-1.86, p = 0.035; OR = 3.96, 95% CI = 1.17-13.33, p = 0018, respectively) in patients with HSP compared to controls. No HLA-DRB1 associations with gastrointestinal and renal manifestations were found (p > 0.05). In contrast, HLA-DRB1*11 positivity was increased and HLA-DRB1 14 positivity reduced in HSP patients with joint manifestations (OR = 2.68, 95% CI = 1.09-6.66, p = 0.029; OR = 9.34, 95% CI = 3.38-25.64, p = 0.000, respectively). Also, HLA-DRB1 13 positivity was found to be increased in patients with nephrotic proteinuria (OR = 3.76, 95% CI = 1.25-11.23, p = 0.025).
Conclusion: These results suggest that genetic factors from HLA-DRB1 genotypes might be related to the susceptibility to HSP for Turkish children but not to the severity of this disease. Additional studies are required to confirm the association of alleles encoded in the HLA region with the disease progression and severity.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
HLA Class I and II Alleles in Anti-Acetylcholine Receptor Antibodies Positive and Double-Seronegative Myasthenia Gravis Patients of Romanian Descent.
Neurol Int
December 2024
Department of Immunology, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iași, Romania.
: Several significant associations between certain Human Leukocyte Antigen (HLA) alleles and myasthenia gravis (MG) subtypes were established in populations from Western Europe and North America and, to a lesser extent, from China and Japan. However, such data are scarcely available for Eastern Europe. This study aimed to analyze the associations of HLA Class I and II alleles with MG and its serological subtypes (with anti-acetylcholine receptor autoantibodies, RAch+MG, and double-seronegative, dSNMG) in myasthenic patients of Romanian descent.
View Article and Find Full Text PDFDetermination of HLA Tissue Type According to the Etiology of Patients with Chronic Renal Failure.
Medeni Med J
December 2024
Akdeniz University School of Medicine, Departmant of Medical Biology and Genetics, Antalya, Turkey.
Objective: Chronic kidney disease (CKD) is a prominent public health concern, is defined as functional and structural damage to the kidneys. This study aims to investigate the association between human leukocyte antigen (HLA) alleles individuals with CKD and the different etiological subgroups of diesease.
Methods: Genomic DNA was obtained from peripheral blood samples of 1,079 patients with retrospective CKD and 1,111 healthy control individuals.
Harnessing global HLA data for enhanced patient matching in iPSC haplobanks.
Cytotherapy
November 2024
Scottish National Blood Transfusion Service, Edinburgh, UK; Global Alliance for iPSC Therapies, Jack Copland Centre, Heriot-Watt Research Park, Edinburgh, UK.
Background: Several countries have either developed or are developing national induced pluripotent stem cell (iPSC) banks of cell lines derived from donors with HLA homozygous genotypes (two identical haplotypes) prevalent in their local populations to provide immune matched tissues and cells to support regenerative medicine therapies. This 'haplobank' approach relies on knowledge of the HLA genotypes of the population to identify the most beneficial haplotypes for patient coverage, and ultimately identify donors or cord blood units carrying two copies of the target haplotype.
Aims: A potentially more efficient alternative to a national bank approach is to assess the haplotypes required to provide global patient coverage and to produce a single, global haplobank.
Prevalence of anti-HLA antibodies among live related renal transplant recipients: A retrospective observational study from a tertiary healthcare Center in India.
Transpl Immunol
December 2024
Department of Transfusion Medicine, Histocompatibility and Molecular Biology, Jaypee Hospital, Noida, UP 201301, India.
Aim: Detection of anti-HLA antibodies is crucial for pre-transplant histocompatibility testing, donor selection, and graft survival. The aim of this study was to evaluate the spectrum of anti-HLA antibodies among live related renal transplant recipients from one of the largest transplant centers in north India.
Methods: In this study, retrospective data of transplant workup done in past four years were analyzed using GraphPad Prism 9 Version 9.
HLA class I supertypes and HLA class I alleles influence the outcome after allogeneic hematopoietic stem cell transplant from unrelated matched donor.
Transpl Immunol
December 2024
Tissue Typing Centre, Clinical Department for Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Croatia.
This retrospective study analyses the impact HLA heterozygosity, supertypes, and alleles have on incidence of graft versus host disease (GvHD), relapse, overall survival (OS), disease-free survival (DFS) and transplant-related mortality (TRM) after HSCT. The study included patients who underwent HSCT, typed at allele resolution level for HLA-A, -B, -C, -DRB1, -DQB1, and -DPB1 loci. The analysis performed on the entire patient cohort (N = 232) showed that HLA-B07 supertype positive patients demonstrated decreased incidence of relapse, better OS and DFS in comparison to those negative for HLA-B07 supertype.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!