scholarly journals Lack of association between diabetic nephropathy and human leukocyte antigen type 2 (HLA II-DQ1) in patients with type 2 diabetes mellitus in west of Iran

2020 ◽  
Vol 10 (4) ◽  
pp. e34-e34
Author(s):  
Mahsa Mohammadi ◽  
Mohsen Rajabnia ◽  
Mohammad Saad Forghani ◽  
Khaled Rahmani ◽  
Mohammad Bahadoram
Keyword(s):  
Diabetes Mellitus ◽  
Diabetic Nephropathy ◽  
Human Leukocyte Antigen ◽  
Human Leukocyte ◽  
Diabetes Type 2 ◽  
Diabetes Type ◽  
Expression Levels ◽  
Leukocyte Antigen ◽  
Significant Difference

Introduction: Diabetic nephropathy (diabetic kidney disease) is one of the microvascular complications of diabetes mellitus. The human leukocyte antigen (HLA) is a group of genes that is related to autoimmune diseases, infections and inflammation. Studies regarding the association of type 2diabetes and HLA-II are negligible. Objectives: The aim of this study is to determinate association between diabetic nephropathy and HLA II-DQ1 in diabetes type 2 patients. Patients and Methods: In this study, 120 diabetes type 2 patients were divided into two groups of diabetic nephropathy (case group) and without diabetic nephropathy (control group). Blood samples were taken and DNA was isolated. Asymmetric polymerase chain reaction (PCR) was used to amplify the HLA II-DQ1 exon 2 and exon 3. PCR products were hybridized and labeled with probes on the chip. Determination of HLAII-DQ1 gene typing was conducted by scanning hybrid products and analyzed with PerkinElmer ScanArray software. Results: The results of chi-square test showed no significant difference between expression levels of HLA in the two groups (P<0.05). Conclusion: There was no significant difference between expression levels of HLA in two groups of patients. Various factors such as demographic characteristics, lifestyle, geographic region, and race are the factors influencing the relationship between diabetic nephropathy and DQ1-HLA II. Since this study is conducted in one region and one race and with limited population, it is suggested that future studies should be considered and the association between the mentioned variables with HLA should be considered.

Eksplorasi Kesadaran Diri, Persepsi Dan Sikap Pada Individu Yang Memiliki Riwayat Keluarga Diabetes Melitus Tipe 2

2019 ◽  
Vol 1 (1) ◽  
pp. 52-62
Author(s):  
Mulia Mayangsari
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Family History ◽  
Diabetes Type 2 ◽  
Diabetes Type ◽  
Self Awareness ◽  
Perceptions And Attitudes ◽  
History Of ◽  
Diabetes Melitus

 Individuals who have a family history oftype 2 diabetes mellitus (DM) have a highrisk for type 2 diabetes. Type 2 diabetescan be prevented by improving modifiablerisk factors, supported by self-awareness,perceptions and attitudes of individualswho have a high family history of DM. Thisstudy used a qualitative phenomenologicaldesign. A Purposive Sampling techiniquewas applied to determine individuals whohad parents with type 2 diabetes. Nineindividuals participated in this study. AQualitative content analysis with Collaiziapproach used as a data analysis method.The main themes depicted individuals selfawareness,perceptions, & attitudes were:denials that diabetes caused by heredityfactors; misperception about diabetes;“traditional modalities” as a preventionmeasurement toward type 2 diabetes; andDM is perceived as a “threatening disease”.Further study is needed to examine indepth the themes that have been identifiedon the number of participants are morenumerous and varied.

scholarly journals Non-inherited maternal human leukocyte antigen alleles in susceptibility to familial rheumatoid arthritis

2008 ◽  
Vol 68 (1) ◽  
pp. 107-109 ◽  
Author(s):  
K A Guthrie ◽  
N R Tishkevich ◽  
J L Nelson
Keyword(s):  
Rheumatoid Arthritis ◽  
Human Leukocyte Antigen ◽  
Age Of Onset ◽  
Human Leukocyte ◽  
Paternal Allele ◽  
Hla Alleles ◽  
Leukocyte Antigen ◽  
The North ◽  
Significant Difference ◽  
Hla Genotype

Objectives:Some patients with rheumatoid arthritis (RA) lack RA-associated human leukocyte antigen (HLA) alleles. Prior studies investigated non-inherited maternal HLA alleles (NIMA) in RA risk with conflicting results.Methods:We examined NIMA in a large cohort of families from the North American Rheumatoid Arthritis Consortium (NARAC).Results:Among 620 patients with 1 or both parents having a HLA genotype, patients with RA informative for analysis included 176 without HLA-DRB1*04 and 86 without the HLA shared epitope (SE). The frequency of NIMA encoding HLA-DR4 or the SE was compared to the non-inherited paternal allele (NIPA). DR4-encoding NIMA vs NIPA revealed no significant difference (27% vs 20%). However, parity is known to modulate RA risk and analyses stratified by sex and age of onset showed significant variation among women. Interestingly, among women with onset <45 years DR4-encoding NIMA was increased compared to NIPA; among women ⩾45 years at onset the reverse was observed (31% vs 16% compared to 10% vs 60%, p = 0.008). DR4 encoding NIMA vs NIPA did not differ in men. The SE did not differ in men or women.Conclusions:Risk of RA was associated with HLA-DR4 encoding NIMA in younger-onset women but not in older-onset women or men. These observations could help explain conflicting prior results of NIMA in RA.

Dynamics of exchange parameters of hormonal indicators in patients with climacteric syndrome associated with diabetes type 2 under the influence of complex therapy with application of antihomotoxicological agents

2018 ◽  
pp. 36-39
Author(s):  
M.O. Pavlovska ◽  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Diabetes Type 2 ◽  
Diabetes Type ◽  
Point Of View ◽  
Climacteric Syndrome ◽  
Basic Therapy ◽  
Complex Therapy

The objective: was to compare the efficacy of complex methods of treating climacteric syndrome in patients with concomitant type 2 diabetes mellitus (DM) by analyzing hormonal parameters before and after complex therapy using antihomotoxicological drugs. Materials and methods. We examined 58 patients aged 45-55 years with a climacteric syndrome on the background of a 2-type diabetes mellitus. Women of the 1st group (n = 28) received only basic therapy according to the National Consensus for the management of patients in menopause with concomitant DM of type 2. Women of the 2nd group (n = 30) were treated with antihomotoxicological drugs against the background of basic therapy. Results. The proposed complexes positively influenced the hormonal state of patients, and also reduced the severity of climacteric syndrome and psychoemotional component. More effective was a complex that included antihomotoxicological agents, which is confirmed by the dynamics of hormonal parameters. Conclusion. From the clinical point of view, the obtained results give grounds to recommend these complexes for the correction of hormonal disorders in women with menopausal disorders on the background of type 2 diabetes mellitus. Key words: climacteric syndrome, diabetes type 2, base therapy, antihomotoxicological agents.

scholarly journals Susceptible and Protective Human Leukocyte Antigen Class II Alleles and Haplotypes in Bahraini Type 2 (Non-Insulin-Dependent) Diabetes Mellitus Patients

2005 ◽  
Vol 12 (1) ◽  
pp. 213-217 ◽  
Author(s):  
Ayesha A. Motala ◽  
Marc Busson ◽  
Einas M. Al-Harbi ◽  
Manal A. A. Khuzam ◽  
Emtiaz M. D. Al-Omari ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Type 1 Diabetes ◽  
Human Leukocyte Antigen ◽  
Human Leukocyte ◽  
Class Ii ◽  
Hla Class Ii ◽  
Leukocyte Antigen ◽  
Insulin Dependent

ABSTRACT Whereas the genetic risk for type 1 diabetes is linked to human leukocyte antigen (HLA) class II genes, the HLA association in type 2 (non-insulin-dependent) diabetes is less clear. The association between HLA class II genotypes and type 2 diabetes was examined in adult Bahrainis, an Arab population with a high prevalence of type 2 diabetes. HLA-DRB1* and -DQB1* genotyping of 86 unrelated type 2 diabetes patients (age, 51.6 ± 8.2 years; mean duration of diabetes, 7.7 ± 7.1 years) who had a strong family history of diabetes (52 of 72 versus 0 of 89 for controls, P < 0.001) and 89 healthy subjects was done by PCR-sequence-specific priming. DRB1*040101 (0.1221 versus 0.0562, P = 0.019) and DRB1*070101 (0.2151 versus 0.0843, P < 0.001) were positively associated, while DRB1*110101 (0.0698 versus 0.1461, P = 0.014) and DRB1*160101 (0.0640 versus 0.1236, P = 0.038) were negatively associated with type 2 diabetes. DRB1*040101-DQB1*0302 (0.069 versus 0.0007; P = 0.004), DRB1*070101-DQB1*0201 (0.178 versus 0.0761, P = 0.007), DRB1*070101-DQB1*050101 (0.125 versus 0.0310, P = 0.002), and DRB1*150101-DQB1*060101 (0.0756 versus 0.0281, P = 0.008) were more prevalent among patients, while DRB1*160101-DQB1*050101 (0.0702 versus 0.0349, P = 0.05) was more prevalent among controls, conferring disease susceptibility or protection, respectively. In Bahrainis with type 2 diabetes, there is a significant association with select HLA class II genotypes, which were distinct from those in type 1 diabetes.

Prevalence of human leukocyte antigen-B27 supertype in the context of positively charged neoepitopes and association with PD-L1 as an immune escape mechanism.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 3083-3083
Author(s):  
Charlene Marie Fares ◽  
Amy Lauren Cummings ◽  
Matthew Karl Theisen ◽  
Jaklin Gukasyan ◽  
Jackson P Lind-Lebuffe ◽  
...  
Keyword(s):  
Gene Expression ◽  
Human Leukocyte Antigen ◽  
Squamous Cell ◽  
Immune Escape ◽  
Immune Surveillance ◽  
Human Leukocyte ◽  
Immune Checkpoint Blockade ◽  
Leukocyte Antigen ◽  
Significant Difference ◽  
Positively Charged

3083 Background: Recent evidence suggests efficacy of immune checkpoint blockade may be influenced by human leukocyte antigen (HLA)-B. HLA-B27 supertype has an electronegative binding pocket which favorably binds and displays neoepitopes harboring positively charged amino acids (AAs). Based on immune surveillance, we postulate that B27 tumors that have favorable neoepitopes should face negative selective pressure, and B27 tumors with favorable neoepitopes that develop could be more likely to upregulate immune escape mechanisms. Here we evaluate the relationship between prevalence of B27 and positively charged neoepitopes and assess association between positively charged neoepitopes and expression of PD-L1. Methods: TCGA datasets from head and neck squamous cell (HNSC), lung squamous cell (LUSC), and melanoma (SKCM) patients were evaluated. HLA alleles were determined with OptiType and supertype was based on 2008 criteria. Nonsynonymous mutations were annotated with Ensembl VEP and VAtools. pVAC-Seq using NetMHCpan algorithm predicted neoepitopes 9 AAs in length. Favorable B27 neoepitopes were defined as those having new positively charged AA substitutions (H/K/R) from negative or uncharged wildtype AAs. RNA-seq data for the PD-L1 gene were normalized on transcripts per million and log2 transformed. Linear regression tests were performed between PD-L1 gene expression values and fraction of nonsynonymous mutations resulting in neoepitopes with new positively charged AAs in patients with B27. Results: Data from 497 HNSC, 494 LUSC, and 468 SKCM patients were analyzed. B27 was observed in 20.1%, 23.2%, and 26.5% of HNSC, LUSC, and SKCM patients, respectively, with a significant difference seen between HNSC and SKCM by chi-square test (χ² = 5.14, p = .023). Of new charged AAs resulting from nonsynonymous mutations, 76.3% in HNSC, 74.0% in LUSC, and 72.0% in SKCM were positively charged (p < .05 between all histologies, paired t-tests). In B27 patients, association between PD-L1 gene expression and fraction of neoepitopes with new positively charged AAs was seen in HNSC (r = 0.25 p = .036) and SKCM (r = 0.30 p = .007), but not LUSC (r = -0.12 p = .296). Conclusions: With increasing fraction of positively charged neoepitopes, a decrease in prevalence of B27 was observed, suggesting improved binding and immune elimination of tumors with favorable neoepitopes. In B27 tumors that develop despite having favorable neoepitopes, upregulation of PD-L1 could be a putative mechanism to evade immune detection.

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