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Autoimmunity

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https://www.readbyqxmd.com/read/29025273/higher-frequencies-of-circulating-icos-il-21-t-follicular-helper-cells-and-plasma-cells-in-patients-with-new-onset-membranous-nephropathy
#1
Zhihui Zhang, Yunpeng Shi, Kunmeng Yang, Rebecca Crew, Haifeng Wang, Yanfang Jiang
BACKGROUND: T follicular helper (TFH) cells and B cells are known to regulate humoral immune responses. This study is aimed at examining the putative contribution of different subsets of circulating of TFH cells and B cells to membranous nephropathy (MN). METHODS: A total of 45 MN patients and 19 healthy controls (HCs) were examined for the number of TFH cells and B cells by flow cytometry. The level of 24-h urinary protein and eGFR were calculated, and the level of serum cytokines was examined...
October 13, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28990435/ptpn22-1858c%C3%A2-%C3%A2-t-polymorphism-and-susceptibility-to-systemic-lupus-erythematosus-a-meta-analysis-update
#2
Suelen Cristina de Lima, José Eduardo Adelino, Sergio Crovella, Jaqueline de Azevedo Silva, Paula Sandrin-Garcia
Studies performed in the past years showed PTNP22 1858 C > T (rs2476601) polymorphism as associated with systemic lupus erythematosus susceptibility, although conflicting findings are still found. In this context, a powerful statistical study, such as meta-analysis, is necessary to establish a consensus. The aim of this study was to evaluate association studies between the PTPN22 1858 C > T polymorphism and SLE by a meta-analysis update, including three recently published studies in the last three years...
October 8, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28988489/fatty-infiltration-of-the-minor-salivary-glands-is-a-selective-feature-of-aging-but-not-sj%C3%A3-gren-s-syndrome
#3
Kerry M Leehan, Nathan P Pezant, Astrid Rasmussen, Kiely Grundahl, Jacen S Moore, Lida Radfar, David M Lewis, Donald U Stone, Christopher J Lessard, Nelson L Rhodus, Barbara M Segal, C Erick Kaufman, R Hal Scofield, Kathy L Sivils, Courtney Montgomery, A Darise Farris
OBJECTIVE: Determine the presence and assess the extent of fatty infiltration of the minor salivary glands (SG) of primary SS patients (pSS) as compared to those with non-SS sicca (nSS). METHODS: Minor SG biopsy samples from 134 subjects with pSS (n = 72) or nSS (n = 62) were imaged. Total area and fatty replacement area for each glandular cross-section (n = 4-6 cross-sections per subject) were measured using Image J (National Institutes of Health, Bethesda, MD)...
October 8, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28959900/expression-of-activation-induced-cytidine-deaminase-splicing-variants-in-patients-with-ankylosing-spondylitis
#4
Ji-Young Kim, Hee-Kyung Yoon, Seung Taek Song, Seok-Rae Park, Seung-Cheol Shim
To investigate the expression patterns of activation-induced cytidine deaminase (AID) variants in peripheral blood mononuclear cells (PBMCs) of patients with ankylosing spondylitis (AS) and examine their clinical implications, we isolated PBMCs from healthy controls (HC, n = 33) and patients with AS (n = 62), and measured mRNA expression of AID variants and translesion synthesis (TLS) polymerases using quantitative real-time polymerase chain reaction. The proportion of patients with AS in whom AID splicing variant (sv) 2 was expressed was significantly higher than that of HC (p = ...
September 29, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28925718/interaction-analysis-between-blk-rs13277113-polymorphism-and-bank1-rs3733197-polymorphism-mmel1-tnfrsf14-rs3890745-polymorphism-in-determining-susceptibility-to-rheumatoid-arthritis
#5
Hua Huang, Si-Chao Huang, Dong-Jin Hua, Qing-Qing Sun, Han Cen, Xia-Fei Xin
Two pairwise genetic interactions (B cell lymphocyte kinase (BLK) rs13277113,B cell scaffold protein with ankyrin repeats 1 (BANK1) rs3733197and BLK rs13277113 membrane metalloendopeptidase like 1 (MMEL1)/ tumor necrosis factor receptor superfamily member 14 (TNFRSF14) rs3890745) have been demonstrated in determining susceptibility to rheumatoid arthritis (RA) without replication, thus this study was performed to examine whether abovementioned genetic polymorphisms were associated with RA and further tests were performed to see whether aforementioned genetic interactions existed in RA among Chinese population...
September 19, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28898115/mannose-binding-lectin-deficiency-and-miscarriages-in-rheumatoid-arthritis
#6
Juliana Z Cieslinski, Isabela Goeldner, Thelma L Skare, Renato Nisihara, Fabiana A De Andrade, Thirumalaisamy P Velavan, Iara Messias-Reason, Shirley R R Utiyama
OBJECTIVE: To investigate the association between mannose-binding lectin (MBL) serum level and MBL2 polymorphisms, and the frequency of spontaneous miscarriages in rheumatoid arthritis (RA) patients. METHODS: One hundred seventy seven women (mean age 50 years) with RA from Southern Brazil were studied and 4.5% had a history of abortion (8/177). The MBL levels were determined by ELISA. MBL2 polymorphisms in the promoter (-550H/L, -221X/Y), 5' untranslated region (4 P/Q) and exon 1 (p...
September 12, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28850269/decreased-bone-mineral-density-in-experimental-myasthenia-gravis-in-c57bl-6-mice
#7
Minako Oshima, Akiko Iida-Klein, Takahiro Maruta, Philip R Deitiker, M Zouhair Atassi
Experimental autoimmune myasthenia gravis (EAMG), an animal model of myasthenia gravis (MG), can be induced in C57BL/6 (B6, H-2 (b)) mice by 2-3 injections with Torpedo californica AChR (tAChR) in complete Freund's adjuvant. Some EAMG mice exhibit weight loss with muscle weakness. The loss in body weight, which is closely associated with bone structure, is particularly evident in EAMG mice with severe muscle weakness. However, the relationship between muscle weakness and bone loss in EAMG has not been studied before...
August 29, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28850267/klrg1-expression-identifies-short-lived-foxp3-treg-effector-cells-with-functional-plasticity-in-islets-of-nod-mice
#8
Mara Kornete, Edward Mason, Roman Istomine, Ciriaco A Piccirillo
A progressive waning in Foxp3(+) regulatory T (Treg) cell function provokes autoimmunity in the non-obese diabetic (NOD) mouse model of type 1 diabetes (T1D), a cellular defect rescued by prophylactic IL-2 therapy. We showed that most islet-infiltrating Treg cells express inducible T-cell co-stimulator (ICOS) in pre-diabetic NOD mice, and that ICOS(+) Treg cells display enhanced fitness and suppressive function in situ. Moreover, T1D progression is associated with decreased expansion and suppressive activity of ICOS(+)Foxp3(+) Treg cells, in islets, an observation consistent with the exacerbated T1D seen in NOD...
August 29, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28906131/effects-of-immunomodulators-on-the-response-induced-by-vaccines-against-autoimmune-diseases
#9
Dante J Marciani
A promising treatment for T-cell-mediated autoimmune diseases is the induction of immune tolerance by modulating the immune response against self-antigens, an objective that may be achieved by vaccination. There are two main types of vaccines currently under development. The tolerogenic vaccines, composed of proteins formed by a cytokine fused to a self-antigen, which usually induce tolerance by eliminating the T-cells that are immune reactive against the self-antigen. The immunogenic vaccines, comprised of a self-antigen plus a sole Th2 adjuvant either free or conjugated, that alleviate autoimmunity by switching the immune response against the self-antigen, from a damaging pro-inflammatory Th1/Th17 to an anti-inflammatory Th2 immunity...
November 2017: Autoimmunity
https://www.readbyqxmd.com/read/28763242/correction-to-sisto-et-al-abnormal-distribution-of-aqp4-in-minor-salivary-glands-of-primary-sj%C3%A3-gren-s-syndrome-patients
#10
(no author information available yet)
No abstract text is available yet for this article.
August 1, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28749191/disease-related-autoantibody-profile-in-patients-with-systemic-sclerosis
#11
Christos Liaskos, Emmanouela Marou, Theodora Simopoulou, Maria Barmakoudi, Georgios Efthymiou, Thomas Scheper, Wolfgang Meyer, Dimitrios P Bogdanos, Lazaros I Sakkas
BACKGROUND: Autoantibodies (autoAbs) help in diagnosis and predicting clinical phenotypes in systemic sclerosis (SSc). AIM OF THE STUDY: To determine the clinical utility of 13 SSc-related autoAbs in SSc patients. MATERIAL AND METHODS: A total of 131 consecutive patients with SSc (111 female, mean age 58.1 ± 14 years; 49 with diffused cutaneous SSc [dcSSc] and 82 with limited cutaneous SSc [lcSSc]) were analysed by a multiplex line immunoassay (Euroimmun) for autoantibodies (autoAbs) against 13 SSc-related antigens...
July 27, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28737980/nitration-of-h2b-histone-elicits-an-immune-response-in-experimental-animals
#12
Md Asad Khan, Khursheed Alam, Syed Mehdi Hassan, M Moshahid A Rizvi
Histone H2B is an autoantigen that appears in circulation due to altered apoptosis/or insufficient clearance and is likely to be involved in the induction and progression of autoimmune diseases since modified-H2B is immunogenic. Our studies demonstrate that tyrosines of H2B histone spontaneously converts to free and nitrotyrosine bound protein in vivo. Commercially available H2B histone was modified with peroxynitrite in vitro. Modified H2B was found to be more immunogenic than native form in experimental animals...
July 24, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28699799/immunization-of-balb-c-mice-with-pigeon-igy-induces-the-production-of-anti-igg-autoantibodies
#13
Ivan Sammir Aranda-Uribe, Enrique Ortega, Erasmo Martínez-Cordero
The breakdown of immunological tolerance due to the activation of autoreactive B and T cells triggers physiopathological processes. An example of such conditions is the production of IgG autoantibodies specific for the Fc portion of IgG (anti-Fcγ IgG). Previous reports have shown that patients with pigeon-related hypersensitivity pneumonitis exhibit an increase in the serum levels of anti-Fcγ IgG. There is no in vivo model for the study of this condition and the immunological mechanisms of tolerance breakdown associated with sensitization by pigeon antigens are still unknown...
July 12, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28686532/management-of-hydrocephalus-associated-with-autoimmune-diseases-a-series-of-19-cases
#14
Baitao Ma, Hao Wu, Hexiang Yin, Jianbo Chang, Li Wang, Renzhi Wang, Wenbin Ma, Yongning Li, Jian Guan, Jinjing Liu, Junji Wei
OBJECTIVES: To analyze the diagnosis and treatment of hydrocephalus associated with autoimmune diseases and to explore the possible mechanism of hydrocephalus in these patients. METHODS: A retrospective case series study was conducted at Peking Union Medical College Hospital, Beijing, China. Files were retrieved from the hospital archives by screening records from Jan 1990 to Jan 2016. Medical records were screened for data regarding (1) the number of patients diagnosed with hydrocephalus associated with autoimmune diseases, (2) the clinical manifestation of hydrocephalus associated with autoimmune disease, and (3) the outcomes of these patients treated with medication or ventriculoperitoneal shunt (VPS)...
July 7, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28686488/contribution-of-both-b-cell-intrinsic-alterations-as-well-as-non-hematopoietic-derived-factors-in-the-enhanced-immune-response-of-the-nod-mouse
#15
Viqar Showkat Banday, Radha Thyagarajan, Kristina Lejon
The underlying cellular and molecular mechanism for the development of Type 1 diabetes is still to be fully revealed. We have previously demonstrated that the NOD mouse, a model for Type 1 diabetes, display a prolonged and enhanced immune response to both self and non-self-antigens. The molecular explanation for this defect however, has not been determined. In this study we immunized NOD and C57BL/6 (B6) with the conventional antigen i.e. hen egg lysozyme (HEL) and analyzed B cell activation, germinal center reaction and antibody clearance...
July 7, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28686485/impaired-salivary-gland-activity-in-patients-with-autoimmune-polyendocrine-syndrome-type-i
#16
Bergithe E Oftedal, Mihaela Cuida Marthinussen, Martina M Erichsen, Maria K Tveitarås, Anja Kjellesvik-Kristiansen, Daniel Hammenfors, Malin V Jonsson, Kai Kisand, Roland Jonsson, Anette S B Wolff
Autoimmune polyendocrine syndrome type I (APS-I) is a severe disease caused by mutations in the autoimmune regulator (AIRE) gene. We hypothesized that salivary gland dysfunction could be a possible unexplored component of these patients and here aimed to investigate salivary and lachrymal symptoms in the Norwegian cohort of APS-I patients (N = 41) and the aetiology behind it. Sicca symptoms and possible corresponding underlying factors were assessed by subjective reports combined with objective measures of saliva and tear flow, serological testing, immune fluorescence microscopy, ultrasonography and searching for putative autoantibodies in the salivary glands...
July 7, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28686480/caerulomycin-a-suppresses-the-differentiation-of-na%C3%A3-ve-t-cells-and-alleviates-the-symptoms-of-experimental-autoimmune-encephalomyelitis
#17
Weshely Kujur, Rama Krishna Gurram, Sudeep K Maurya, Sajid Nadeem, Sathi Babu Chodisetti, Nargis Khan, Javed Naim Agrewala
Multiple sclerosis (MS) is a highly detrimental autoimmune disease of the central nervous system. There is no cure for it but the treatment typically focuses on subsiding severity and recurrence of the disease. Experimental autoimmune encephalomyelitis (EAE) is an animal model of MS. It is characterized by frequent relapses due to the generation of memory T cells. Caerulomycin A (CaeA) is known to suppress the Th1 cells, Th2 cells, and Th17 cells. Interestingly, it enhances the generation of regulatory T cells (Tregs)...
July 7, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28682648/kinase-inhibitors-of-the-igf-1r-as-a-potential-therapeutic-agent-for-rheumatoid-arthritis
#18
Hiroshi Tsushima, Shinji Morimoto, Maki Fujishiro, Yuko Yoshida, Kunihiro Hayakawa, Takuya Hirai, Tomoko Miyashita, Keigo Ikeda, Ken Yamaji, Kenji Takamori, Yoshinari Takasaki, Iwao Sekigawa, Naoto Tamura
We have previously shown that the inhibition of connective tissue growth factor (CTGF) is a potential therapeutic strategy against rheumatoid arthritis (RA). CTGF consists of four distinct modules, including the insulin-like growth factor binding protein (IGFBP). In serum, insulin-like growth factors (IGFs) bind IGFBPs, interact with the IGF-1 receptor (IGF-1 R), and regulate anabolic effects and bone metabolism. We investigated the correlation between IGF-1 and the pathogenesis of RA, and the inhibitory effect on osteoclastogenesis and angiogenesis of the small molecular weight kinase inhibitor of the IGF-1 R, NVP-AEW541, against pathogenesis of RA in vitro...
July 6, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28675712/association-of-the-polymorphisms-in-the-gene-encoding-thyroglobulin-with-the-development-and-prognosis-of-autoimmune-thyroid-disease
#19
Tomoyo Mizuma, Mikio Watanabe, Naoya Inoue, Yuya Arakawa, Saki Tomari, Yoh Hidaka, Yoshinori Iwatani
Graves' disease (GD) and Hashimoto's disease (HD) are autoimmune thyroid diseases (AITDs), and the prognosis of AITDs is different for each patient. We examined the association of polymorphisms in the Thyroglobulin (TG) gene with the pathogenesis of AITD. We genotyped TG rs180195G/A, rs853326G/A, rs2076740C/T, rs2703013G/T, rs2958692C/T and rs733735A/G polymorphisms in 137 HD patients, 131 GD patients and 89 healthy controls and also examined the levels of TG mRNA expression and serum TG. The TG rs180195 GG genotype was more frequent in HD patients (p = ...
July 4, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28675711/modification-of-anti-tumor-immunity-by-tolerogenic-dendritic-cells
#20
Liying Chen, Mohammad Sharif Hasni, Mikael Jondal, Konstantin Yakimchuk
Immunosuppressive functions of glucocorticoids (GC) can be mediated via various mechanisms, including the modulation of dendritic cells (DC). Our study investigates the effects of tolerogenic GC-treated DCs on NK and T cell anti-tumor responses in OT-1/Rag(-/-) mice, expressing a transgenic TCR in CD8(+) T cells. The effects caused by GC-treated DCs were compared to the responses to immunogenic, CpG-activated DCs. The effects of DCs on anti-tumor immune responses were analyzed using the EG7 tumor model, where the tumor cells express the peptide epitope recognized by OT-1 T cells...
July 4, 2017: Autoimmunity
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