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Human Immunology

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https://www.readbyqxmd.com/read/28315719/sequence-based-hla-a-b-c-dp-dq-and-dr-typing-of-100-luo-infants-from-the-boro-area-of-nyanza-province-kenya
#1
Cecilia S Lindestam Arlehamn, Richard Copin, Shay Leary, Steven J Mack, Elizabeth Phillips, Simon Mallal, Alessandro Sette, Gretta Blatner, Heather Siefers, Joel D Ernst
One hundred healthy infants enrolled as controls in a tuberculosis vaccine study in Nyanza Province, Kenya provided anonymized samples for DNA sequence-based typing at the HLA-A, -B, -C, -DPB1, -DQA1, -DQB1, -DRB1, and -DRB3/4/5 loci. The purpose of the study was to characterize allele frequencies in the local population, to support studies of T cell immunity against pathogens, including Mycobacterium tuberculosis. There are no detectable deviations from Hardy Weinberg proportions for the HLA-B, -C, -DRB1, -DPB1, -DQA1 and -DQB1 loci...
March 16, 2017: Human Immunology
https://www.readbyqxmd.com/read/28315348/fc-gamma-receptor-3a-polymorphism-predicts-the-incidence-of-urinary-tract-infection-in-kidney-transplant-recipients
#2
Lalit Kumar Das, Kentaro Ide, Asuka Tanaka, Hiroshi Morimoto, Seiichi Shimizu, Naoki Tanimine, Yuka Tanaka, Hideki Ohdan
We investigated the impact of polymorphisms in host innate immunoregulatory genes on the development of infectious complications after kidney transplantation (KT). The single-nucleotide polymorphisms (SNPs) of C1QA [276 A/G], FCGR2A [131 H/R], and FCGR3A [158 F/V], genes encoding the Fc gamma receptor (FcγR), were analyzed in 81 KT recipients in relation to the occurrences of postoperative infectious complications within 30 days after KT. Consistent with a lower affinity of the isoform encoded by the FCGR3A [158 F] to both IgG1 and IgG3, a significantly higher incidence of urinary tract infections (UTIs) was observed in the FCGR3A [158 F/V or F/F] individuals (65...
March 14, 2017: Human Immunology
https://www.readbyqxmd.com/read/28284829/histopathologic-changes-in-anti-angiotensin-ii-type-1-receptor-antibody-positive-kidney-transplant-recipients-with-acute-rejection-and-no-donor-specific-hla-antibodies
#3
Mary Ann Lim, Matthew Palmer, Jennifer Trofe-Clark, Roy Bloom, Annette Jackson, Mary Carmelle Philogene, Malek Kamoun
OBJECTIVE: To determine the association of antibodies against angiotensin II type 1 receptor (AT1R Ab) and histopathologic changes seen in patients with kidney allograft rejection and negative donor specific HLA antibodies (DSA). METHODS: Stored sera from 27 patients who had biopsy-proven rejection in the absence of DSA were tested for AT1R Ab. Biopsy slides of all patients were re-examined and classified according to Banff 2013 criteria. Histopathologic changes were compared between AT1R positive and negative patients...
March 8, 2017: Human Immunology
https://www.readbyqxmd.com/read/28279756/analysis-of-ccr5-gene-polymorphisms-in-321-healthy-saudis-using-next-generation-sequencing
#4
Mohammed A Al Balwi, Ali I Hadadi, Wardah Alharbi, Mariam Ballow, Abdulrahman AlAsiri, Abdulkareem AlAbdulrahman, Udayaraja G K, Mohammed Aldrees, Ibrahim AlAbdulkareem, Ali H Hajeer
AIMS: To investigate the extent of CCR5 polymorphism in the healthy Saudi population. METHOD: A total of 321 healthy Saudi individuals were sequenced using the ion Ampliseq™ Exome kit (Life Technologies, USA) on genomic DNA following manufacturer's protocol. Whole Exome Sequencing (WES) reads were aligned to the human reference genome (hg19 build) with Torrent Suite Software (v5.0.2) and the variants were called using the Torrent Variant Caller plugin (v5.0) and imported into Ion Reporter Server (v5...
March 7, 2017: Human Immunology
https://www.readbyqxmd.com/read/28267558/rapid-detection-of-donor-cell-free-dna-in-lung-transplant-recipients-with-rejections-using-donor-recipient-hla-mismatch
#5
Jun Zou, Brian Duffy, Michael Slade, Andrew Lee Young, Nancy Steward, Ramsey Hachem, T Mohanakumar
Fiberoptic bronchoscopy and transbronchial lung biopsy are currently the gold standard for detection of acute rejection following human lung transplantation (LTx). However, these surveillance procedures are expensive and invasive. Up to now, there are few new methods that have demonstrated clinical utility for detecting early stages of rejection following human lung transplantation. We optimized and technically validated a novel method to quantify donor-derived circulating cell free DNA (DcfDNA) that can be used as an early biomarker for lung allograft rejection...
March 4, 2017: Human Immunology
https://www.readbyqxmd.com/read/28263776/polymorphisms-in-il10-may-alter-cd4-t-cell-counts-in-indonesian-hiv-patients-beginning-antiretroviral-therapy
#6
Deane Maria Dmello, Ibnu Ariyanto, Riwanti Estiasari, Samuel Halstrom, Jessica Gaff, Silvia Lee, Patricia Price
Interleukin 10 (IL-10) is a potent anti-inflammatory cytokine influenced by single nucleotide polymorphisms (SNP) located in upstream regulatory regions. Here we address the effects of five SNP (rs1518111, rs3021094, rs3024491, rs1800872 and rs1800871) on CD4 T-cell counts in Indonesian HIV patients assessed before ART and over 12months on treatment. Heterozygosity at rs1518111 or rs1800872 associated with low CD4 T-cell counts at all time points. Both alleles were carried in two haplotypes. Haplotype 21122 (present in 30% of participants) associated with low CD4 T-cell counts, whereas 21222 (in 6% of participants) did not...
March 2, 2017: Human Immunology
https://www.readbyqxmd.com/read/28259733/nfkbiz-in-psoriasis-assessing-the-association-with-gene-polymorphisms-and-report-of-a-new-transcript-variant
#7
Pablo Coto-Segura, Leire Gonzalez-Lara, Juan Gómez, Noemí Eiris, Ana Batalla, Celia Gómez, Sheila Requena, Rubén Queiro, Belén Alonso, Sara Iglesias, Eliecer Coto
The IκBζ protein (NFKBIZ gene) is a nuclear inhibitor of NF-κB and plays an important role in the pathogenesis of Psoriasis (Psor). We sought to determine whether common NFKBIZ variants were associated with the risk of developing Psor. A total of 392 patients and 336 controls were genotyped for a common intron 10 indel that could affect pre-mRNA splicing. We found a significantly higher frequency of the insertion among the cw6-positive patients (p=0.01). Cw6-positive+intron 10 ins/ins were significantly more frequent in the patients (OR=3...
March 1, 2017: Human Immunology
https://www.readbyqxmd.com/read/28213050/reduced-frequency-of-two-activating-kir-genes-in-patients-with-sepsis
#8
Luciana M Oliveira, Pamela Portela, Joice Merzoni, Juliana D Lindenau, Fernando S Dias, Jaqueline Beppler, Pietra Graebin, Clarice S Alho, Gilberto Schwartsmann, Felipe Dal-Pizzol, Luiz Fernando Jobim, Mariana Jobim, Rafael Roesler
Natural killer (NK) cell activity is regulated by activating and inhibitory signals transduced by killer cell immunoglobulin-like receptors (KIR). Diversity in KIR gene repertoire among individuals may affect disease outcome. Sepsis development and severity may be influenced by genetic factors affecting the immune response. Here, we examined sixteen KIR genes and their human leucocyte antigen (HLA) class I ligands in critical patients, aiming to identify patterns that could be associated with sepsis. Male and female patients (ages ranging between 14 and 94years-old) were included...
February 14, 2017: Human Immunology
https://www.readbyqxmd.com/read/28213049/impaired-nk-cell-functionality-and-increased-tnf-%C3%AE-production-as-biomarkers-of-chronic-chikungunya-arthritis-and-rheumatoid-arthritis
#9
Subrat Thanapati, Mohini Ganu, Prashant Giri, Shruti Kulkarni, Meenal Sharma, Prasad Babar, Ashok Ganu, Anuradha S Tripathy
The chronic chikungunya arthritis symptoms closely mimic the rheumatoid arthritis (RA) symptoms, thus making it difficult to distinguish between these two clinical entities. The current comparative study characterizes NK (CD3(-)CD56(+)) and NK-like T (CD3(+)CD56(+)) cell responses in patients with chronic chikungunya arthritis and RA. Phenotype and functions of NK and NK-like T cells repertoire were assessed in 56 chronic chikungunya arthritis, 26 RA patients and 82 controls using flow cytometry. TNF-α and IFN-γ-secreting NK-like T cells were high in both chronic arthritis patients than in controls...
February 14, 2017: Human Immunology
https://www.readbyqxmd.com/read/28196748/up-regulation-of-cx3cr1-on-tonsillar-cd8-positive-cells-in-patients-with-iga-nephropathy
#10
Ryuki Otaka, Miki Takahara, Seigo Ueda, Toshihiro Nagato, Kan Kishibe, Kenichiro Nomura, Akihiro Katada, Tatsuya Hayashi, Yasuaki Harabuchi
Although tonsillectomy are used as therapeutic options to prevent chronic renal failure in IgA nephropathy (IgAN) patients, the relationship between IgAN and tonsils is not fully proved by basic research. Recently, circulating CX3CR1-positive cells were reportedly involved in promoting hematuria in patients with IgAN. In this study, we focused on the expression of CX3CR1 in tonsillar mononuclear cells in IgAN patients. Immunohistological analysis revealed greater distribution of CX3CR1-positive cells in the inter-follicular area of tonsils in IgAN patients than in non-IgAN patients...
February 11, 2017: Human Immunology
https://www.readbyqxmd.com/read/28189573/relationship-between-mean-fluorescence-intensity-and-c1q-c3d-fixing-capacities-of-anti-hla-antibodies
#11
Guillaume Claisse, Lena Absi, Fabrice Cognasse, Eric Alamartine, Christophe Mariat, Nicolas Maillard
BACKGROUND: Complement-binding assays are proposed to better stratify the risk of antibody-mediated rejection associated-graft failure. Despite promising clinical results, some have suggested that the MFI of anti-HL antibodies may influence these tests. METHODS: We investigated the impact of Abs MFI reduction, induced by plasmapheresis, on C1q- and C3d-binding assays. Sera provided from 7 sensitized kidney transplant patients were analysed. RESULTS: Four hundreds and thirty-three SABs were analyzed...
February 9, 2017: Human Immunology
https://www.readbyqxmd.com/read/28185865/cutaneous-squamous-cell-cancer-cscc-risk-and-the-human-leukocyte-antigen-hla-system
#12
REVIEW
Pooja Yesantharao, Wei Wang, Nilah M Ioannidis, Shadmehr Demehri, Alice S Whittemore, Maryam M Asgari
Cutaneous squamous cell carcinoma (cSCC) is the second most common cancer among Caucasians in the United States, with rising incidence over the past decade. Treatment for non-melanoma skin cancer, including cSCC, in the United States was estimated to cost $4.8 billion in 2014. Thus, an understanding of cSCC pathogenesis could have important public health implications. Immune function impacts cSCC risk, given that cSCC incidence rates are substantially higher in patients with compromised immune systems. We report a systematic review of published associations between cSCC risk and the human leukocyte antigen (HLA) system...
February 7, 2017: Human Immunology
https://www.readbyqxmd.com/read/28174026/susceptibility-to-non-tuberculous-mycobacterial-disease-is-influenced-by-rs1518111-in-il10
#13
Samuel Halstrom, Rachel Thomson, Hayley Goullee, Svetlana Baltic, Richard Allcock, Suzanna E L Temple, Patricia Price
Although exposure to potentially pathogenic nontuberculous mycobacteria (NTM) via soil and domestic water supplies is common, pulmonary infection and disease are confined to a small proportion of older individuals. Previously, alleles of a polymorphism in IL10 (rs1800896) were associated with NTM disease and we demonstrated elevated production of IL-10 by blood leukocytes from patients with pulmonary NTM. Here seven additional polymorphisms in IL10 were investigated in a larger cohort of Caucasian controls and patients with pulmonary NTM disease...
February 4, 2017: Human Immunology
https://www.readbyqxmd.com/read/28167235/hla-a-b-and-c-genotyping-and-haplotype-frequencies-in-a-population-of-50-healthy-unrelated-bone-marrow-donors-from-eastern-sicily
#14
Cristina Capittini, Annalisa De Silvestri, Fabrizio Puglisi, Maria Azzaro, Sebastiana Toscano, Sabina Rendine, Carmine Tinelli, Grazia Sortino
No abstract text is available yet for this article.
February 3, 2017: Human Immunology
https://www.readbyqxmd.com/read/28111170/nomenclature-for-factors-of-the-hla-system-update-november-2016
#15
Steven G E Marsh
No abstract text is available yet for this article.
January 20, 2017: Human Immunology
https://www.readbyqxmd.com/read/28111169/nomenclature-for-factors-of-the-hla-system-update-december-2016
#16
Steven G E Marsh
No abstract text is available yet for this article.
January 20, 2017: Human Immunology
https://www.readbyqxmd.com/read/28111168/nomenclature-for-factors-of-the-hla-system-update-october-2016
#17
Steven G E Marsh
No abstract text is available yet for this article.
January 20, 2017: Human Immunology
https://www.readbyqxmd.com/read/28111167/associations-of-killer-cell-immunoglobulin-like-receptors-with-acute-myeloid-leukemia-in-chinese-populations
#18
Sudan Tao, Yanmin He, Lina Dong, Junjun He, Nanying Chen, Wei Wang, Zhedong Han, Wei Zhang, Ji He, Faming Zhu
Many studies have investigated the relationship between KIR, HLA and acute myeloid leukemia (AML), but the results were different in different laboratories, and the data in Chinese population were limited. In this study, the distribution of KIR gene, KIR genotypes, HLA-C groups, HLA-Bw4, and KIR-HLA interaction from 273 healthy participants and 253 AML patients (M0-M6) in southern Chinese Han were determined to investigate the relationships among KIR, HLA and AML. The results showed that the frequencies of 2DS4del in M5 patients were significantly higher than those of the controls (65...
January 20, 2017: Human Immunology
https://www.readbyqxmd.com/read/28111166/high-resolution-hla-haplotyping-by-imputation-for-a-british-population-bioresource
#19
Matt J Neville, Wanseon Lee, Peter Humburg, Daniel Wong, Martin Barnardo, Fredrik Karpe, Julian C Knight
This study aimed to establish the occurrence and frequency of HLA alleles and haplotypes for a healthy British Caucasian population bioresource from Oxfordshire. We present the results of imputation from HLA SNP genotyping data using SNP2HLA for 5553 individuals from Oxford Biobank, defining one- and two-field alleles together with amino acid polymorphisms. We show that this achieves a high level of accuracy with validation using sequence-specific primer amplification PCR. We define six- and eight-locus HLA haplotypes for this population by Bayesian methods implemented using PHASE...
January 19, 2017: Human Immunology
https://www.readbyqxmd.com/read/28093266/comparative-analysis-of-nk-cell-receptor-repertoire-in-adults-and-very-elderly-subjects-with-cytomegalovirus-infection
#20
Guillermo Juárez-Vega, Velia Rangel-Ramírez, Adriana Monsiváis-Urenda, Perla Niño-Moreno, Christian Garcia-Sepúlveda, Daniel E Noyola, Roberto González-Amaro
Human cytomegalovirus (HCMV) infection in children and young adults has been associated with changes in the innate immune system. We herein analyzed the possible effect of very long term HCMV infection on the expression of several NK cell receptors. Ninety HCMV-seropositive individuals were included and classified as young adults (n=30), elderly (n=30) and very elderly subjects (n=30). A peripheral blood sample was obtained and the expression of NK cell receptors (NKG2A, NKG2C, ILT2, CD161, KIR2DL1, KIR3DL1, and KIR3DL2) by NK and other lymphocyte subsets was assessed by flow cytometry...
January 16, 2017: Human Immunology
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