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autoimmune diabetes

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https://www.readbyqxmd.com/read/29241180/high-mobility-group-box1-inhibitor-glycyrrhizic-acid-attenuates-kidney-injury-in-streptozotocin-induced-diabetic-rats
#1
Hong Zhang, Ru Zhang, Juan Chen, Min Shi, Wei Li, Xiangcheng Zhang
BACKGROUND/AIMS: High mobility group box 1 (HMGB1) is an important mediator of the inflammatory response. It has been implicated in the pathogenesis of autoimmune diseases, atherosclerosis, and obesity. However, the effects of HMGB1 on diabetic nephropathy remain unclear. Here, we investigated the potential roles and mechanisms of an HMGB1 inhibitor, glycyrrhizic acid (GA), in renal injury with the streptozotocin (STZ)-induced rat model. METHODS: The diabetic rat was generated by intraperitoneal injection of STZ and then treated with the HMGB1 inhibitor GA or saline for 8 weeks...
November 15, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29236750/identification-of-gad65-aa-114-122-reactive-memory-like-nk-cells-in-newly-diagnosed-type-1-diabetic-patients-by-hla-class-i-pentamers
#2
Valentina Perri, Elena Gianchecchi, Loredana Cifaldi, Marsha Pellegrino, Ezio Giorda, Marco Andreani, Marco Cappa, Alessandra Fierabracci
Type 1 diabetes is an autoimmune disease, in which pancreatic β cells are destroyed by autoreactive T cells in genetically predisposed individuals. Serum beta cell autoantibody specificities have represented the mainstay for classifying diabetes as autoimmune-mediated and for stratifying risk in first-degree relatives. In recent years, approaches were attempted to solve the difficult issue of detecting rare antigen-specific autoreactive T cells and their significance to etiopathogenesis such as the use of the MHC multimer technology...
2017: PloS One
https://www.readbyqxmd.com/read/29234623/are-perinatal-events-risk-factors-for-childhood-thyroid-autoimmunity
#3
Berglind Jonsdottir, Markus Lundgren, Sara Wallengren, Åke Lernmark, Ida Jönsson, Helena Elding Larsson
Background: Environmental and genetic factors possibly trigger thyroid autoimmunity. Studies on perinatal risk factors for childhood thyroid autoimmunity are sparse. Objectives: The aim was to investigate if perinatal factors, family history of autoimmune diseases, and HLA-DQ genotypes contribute to thyroid autoimmunity in the Diabetes Prediction in Skåne (DiPiS) study. Methods: Samples from 1,874 ten-year-old children were analyzed for autoantibodies to thyroid peroxidase (TPOAb), thyroglobulin (TGAb), and HLA-DQ genotypes...
November 2017: European Thyroid Journal
https://www.readbyqxmd.com/read/29227039/mid-term-results-of-bariatric-surgery-in-morbidly-obese-japanese-patients-with-slow-progressive-autoimmune-diabetes
#4
Kohei Uno, Yosuke Seki, Kazunori Kasama, Kotaro Wakamatsu, Kenkichi Hashimoto, Akiko Umezawa, Katsuhiko Yanaga, Yoshimochi Kurokawa
INTRODUCTION: Bariatric surgery is recognized as an effective treatment for type 2 diabetes mellitus, but data on its efficacy for type 1 diabetes mellitus, especially slowly progressive insulin-dependent diabetes mellitus, are limited. METHODS: We investigated five Japanese patients with slowly progressive insulin-dependent diabetes mellitus who underwent bariatric surgery at our center. RESULTS: Five morbidly obese glutamic acid decarboxylase antibody-positive diabetic patients underwent two different types of bariatric surgery...
December 11, 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/29224923/allele-specific-methylation-of-type-1-diabetes-susceptibility-genes
#5
Alida S D Kindt, Rainer W Fuerst, Jan Knoop, Michael Laimighofer, Tanja Telieps, Markus Hippich, Maria A Woerheide, Simone Wahl, Rory Wilson, Eva-Maria Sedlmeier, Angela Hommel, John A Todd, Jan Krumsiek, Anette-G Ziegler, Ezio Bonifacio
The susceptibility to autoimmune diseases is influenced by genes encoding major histocompatibility complex (MHC) proteins. By examining the epigenetic methylation maps of cord blood samples, we found marked differences in the methylation status of CpG sites within the MHC genes (cis-metQTLs) between carriers of the type 1 diabetes risk haplotypes HLA-DRB1*03-DQA1*0501-DQB1*0201 (DR3-DQ2) and HLA-DRB1*04-DQA1*0301-DQB1*0302 (DR4-DQ8). These differences were found in children and adults, and were accompanied by reduced HLA-DR protein expression in immune cells with the HLA-DR3-DQ2 haplotype...
December 7, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29220526/anti-pd-l1-treatment-induced-central-diabetes-insipidus
#6
Chen Zhao, Sri Harsha Tella, Jaydira Del Rivero, Anuhya Kommalapati, Ifechukwude Ebenuwa, James Gulley, Julius Strauss, Isaac Brownell
Context: Immune checkpoint inhibitors, including anti-PD-1, anti-PD-L1 and anti-CTLA4 monoclonal antibodies, have been widely used in cancer treatment. They are known to cause immune-related adverse events (irAEs), which resemble autoimmune diseases. Anterior pituitary hypophysitis with secondary hypopituitarism is a frequently reported irAE, especially in patients receiving anti-CTLA4 treatment. In contrast, posterior pituitary involvement, such as central diabetes insipidus (DI), is relatively rare and is unreported in patients undergoing PD-1/PD-L1 blockade...
December 6, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29220505/metabolic-characteristics-of-recently-diagnosed-adult-onset-autoimmune-diabetes-mellitus
#7
Oana P Zaharia, Pavel Bobrov, Klaus Strassburger, Kálmán Bódis, Yanislava Karusheva, Michaela Scholz, Daniel F Markgraf, Volker Burkart, Nanette C Schloot, Karsten Müssig, Julia Szendroedi, Michael Roden
Context and Objective: Among patients diagnosed with type 2 diabetes, autoimmune diabetes often remains undetected. Metabolic features of these patients are insufficiently characterized at present. Design, Setting and Patients: This study compared age- and sex-matched adult (41-62 years) humans with recent-onset diabetes: patients positive for antibodies against glutamic acid decarboxylase (GAD) and/or cytoplasmic islet-cell antigen with an insulin-free period of >6 months (ab+/ins-; previously termed latent autoimmune diabetes of adults, LADA), type 1 (ab+/ins+), type 2 diabetes (ab-/ins-) and glucose-tolerant humans (controls) of the German Diabetes Study (n=41/group)...
December 6, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29220073/collective-effects-of-common-snps-and-genetic-risk-prediction-in-type-1-diabetes
#8
Y Gui, X Lei, S Huang
Type 1 diabetes (T1D) is a common autoimmune disease and may be related to multiple genetic and environmental risk factors. Previous genetic studies have focused on looking for individual polymorphic risk variants. Here we studied the overall levels of genetic diversity in T1D patients by making use of a previously published study including 1,865 cases and 2,828 reference samples with genotyping data for 500K common single nucleotide polymorphisms (SNPs). We determined the minor allele status of each SNP in the reference samples and calculated the total number of minor alleles or minor allele contents (MAC) of each individual...
December 8, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/29218110/downregulation-of-cathepsin-g-reduces-the-activation-of-cd4-t-cells-in-murine-autoimmune-diabetes
#9
Fang Zou, Xiaoyang Lai, Jing Li, Shuihong Lei, Lei Hu
Type 1 diabetes mellitus (T1DM) is an autoimmune disease due to progressive injury of islet cells mediated by T lymphocytes (T cells). Our previous studies have shown that only cathepsin G (CatG), not other proteases, is involved in the antigen presentation of proinsulin, and if the presentation is inhibited, the activation of CD4+ T cells induced by proinsulin is alleviated in T1DM patients, and CatG-specific inhibitor reduces the activation of CD4+ cells induced by proinsulin in T1DM patients. Therefore, we hypothesize that CatG may play an important role in the activation of CD4+ T cells in T1DM...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29218028/the-folate-cycle-as-a-cause-of-natural-killer-cell-dysfunction-and-viral-etiology-in-type-1-diabetes
#10
Allison L Bayer, Christopher A Fraker
The folate pathway is critical to proper cellular function and metabolism. It is responsible for multiple functions, including energy (ATP) production, methylation reactions for DNA and protein synthesis and the production of immunomodulatory molecules, inosine and adenosine. These play an important role in immune signaling and cytotoxicity. Herein, we hypothesize that defects in the folate pathway in genetically susceptible individuals could lead to immune dysfunction, permissive environments for chronic cyclical latent/lytic viral infection, and, ultimately, the development of unchecked autoimmune responses to infected tissue, in this case islet beta cells...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29217651/interleukin-18-serum-level-is-elevated-in-type-2-diabetes-and-latent-autoimmune-diabetes
#11
Emanuela Zaharieva, Zdravko Kamenov, Tsvetelina Velikova, Adelina Tsakova, Yosif El-Darawish, Haruki Okamura
BACKGROUND: Interleukin-18 (IL-18) is an inflammatory cytokine found to be elevated in obesity, metabolic syndrome and type 2 diabetes (T2D) as a part of the chronic low-grade inflammatory process in these states. The aim of the study was to evaluate the interleukin level in patients with latent autoimmune diabetes of the adults (LADA) in comparison to that in T2D subjects. MATERIALS AND METHODS: IL-18 was analyzed through Enzyme-Linked Immunosorbent Assay in 76 participants with T2D and 24 with LADA and 14 control subjects...
December 7, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29217291/pregnancy-outcomes-in-adult-patients-with-dermatomyositis-and-polymyositis
#12
Kathleen D Kolstad, David Fiorentino, Shufeng Li, Eliza F Chakravarty, Lorinda Chung
OBJECTIVE: The idiopathic inflammatory myopathies dermatomyositis (DM) and polymyositis (PM) are autoimmune diseases that can affect females of childbearing potential. We assessed pregnancy outcomes in DM and PM patients compared with the general obstetric population. METHODS: The Nationwide Inpatient Sample (NIS) (1993-2007) was used to identify delivery-associated hospitalizations in women with DM or PM (DM/PM, n = 853). Controls were from the general obstetric population delivery-associated hospitalizations matched to each case by year of delivery...
November 20, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/29215791/protective-effects-of-carbonyl-iron-against-multiple-low-dose-streptozotocin-induced-diabetes-in-rodents
#13
Milica Vujicic, Tamara Saksida, Marija Mostarica Stojkovic, Neda Djedovic, Ivana Stojanovic, Stanislava Stosic-Grujicic
Particulate adjuvants have shown increasing promise as effective, safe and durable agents for the stimulation of immunity, or alternatively, the suppression of autoimmunity. Here we examined the potential of the adjuvant carbonyl iron (CI) for the modulation of organ-specific autoimmune disease - type 1 diabetes (T1D). T1D was induced by multiple low doses of streptozotocin (MLDS) that initiates beta cell death and triggers immune cell infiltration into the pancreatic islets. The results of this study indicate that the single in vivo application of CI to MLDS-treated DA rats, CBA/H mice, or C57BL/6 mice successfully counteracted the development of insulitis and hyperglycemia...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29214049/latent-autoimmune-diabetes-of-adulthood-case-report
#14
Cristen P Page, Brian Fitzgerald, Emily M Hawes
Background: Primary care clinicians will see a higher incidence of type 2 diabetes in adult patients, and the diagnosis and management of an initial presentation of type 1 diabetes can pose challenges to clinicians who see it less frequently. Symptoms of hyperglycemia and risk of ketoacidosis may be missed. Further, endocrine autoimmune disease can run together in patients and families. Case presentation: A 49-year-old Caucasian female with history of pituitary adenoma and Graves' disease with history of thyroid ablation presented in the outpatient setting due to hand tingling of her right middle finger that was worse in the mornings and improved throughout the day...
2017: Clinical Diabetes and Endocrinology
https://www.readbyqxmd.com/read/29211981/mait-cells-a-link-between-gut-integrity-and-type-1-diabetes
#15
Elke Gülden, Noah Palm, Kevan C Herold
Type 1 diabetes (T1D) is a multifactorial autoimmune disease whose etiology involves complex interactions between the immune system and the intestinal microbiota. Recent studies by Rouxel et al. (2017) suggest that innate-like mucosal-associated invariant T cells (MAIT cells) may link gut integrity, the microbiota, and T1D.
December 5, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/29209740/early-deficits-in-insulin-secretion-beta-cell-mass-and-islet-blood-perfusion-precede-onset-of-autoimmune-type-1-diabetes-in-biobreeding-rats
#16
Anya Medina, Saba Parween, Sara Ullsten, Neelanjan Vishnu, Yuk Ting Siu, My Quach, Hedvig Bennet, Alexander Balhuizen, Lina Åkesson, Nils Wierup, Per Ola Carlsson, Ulf Ahlgren, Åke Lernmark, Malin Fex
AIMS/HYPOTHESIS: Genetic studies show coupling of genes affecting beta cell function to type 1 diabetes, but hitherto no studies on whether beta cell dysfunction could precede insulitis and clinical onset of type 1 diabetes are available. METHODS: We used 40-day-old BioBreeding (BB) DRLyp/Lyp rats (a model of spontaneous autoimmune type 1 diabetes) and diabetes-resistant DRLyp/+ and DR+/+ littermates (controls) to investigate beta cell function in vivo, and insulin and glucagon secretion in vitro...
December 6, 2017: Diabetologia
https://www.readbyqxmd.com/read/29209330/the-enigma-of-heat-shock-proteins-in-immune-tolerance
#17
REVIEW
Willem van Eden, Manon A A Jansen, Irene Ludwig, Peter van Kooten, Ruurd van der Zee, Femke Broere
The fundamental problem of autoimmune diseases is the failure of the immune system to downregulate its own potentially dangerous cells, which leads to destruction of tissue expressing the relevant autoantigens. Current immunosuppressive therapies offer relief but fail to restore the basic condition of self-tolerance. They do not induce long-term physiological regulation resulting in medication-free disease remissions. Heat shock proteins (HSPs) have shown to possess the capacity of inducing lasting protective immune responses in models of experimental autoimmune diseases...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29207798/does-vitamin-d-supplementation-improve-glycaemic-control-in-children-with-type-1-diabetes-mellitus-a-randomized-controlled-trial
#18
Shreya Sharma, Niranjan Biswal, Adhisivam Bethou, Medha Rajappa, Sadish Kumar, Vickneshwaran Vinayagam
Introduction: Vitamin D endocrine system is a potential immune system modulator and has been implicated in the pathogenesis of several autoimmune diseases including Type 1 Diabetes Mellitus (T1DM). Studies have demonstrated an inverse risk relationship between T1DM and Vitamin D levels and also, shown a reduced risk of the disease with its supplementation. Aim: To evaluate the role of Vitamin D as an adjuvant in improving glycaemic control and residual pancreatic beta-cell function...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29206239/type-1-diabetes-alters-lipid-handling-and-metabolism-in-human-fibroblasts-and-peripheral-blood-mononuclear-cells
#19
Albert R Jones Iv, Emily L Coleman, Nicholas R Husni, Jude T Deeney, Forum Raval, Devin Steenkamp, Hans Dooms, Barbara S Nikolajczyk, Barbara E Corkey
Triggers of the autoimmune response that leads to type 1 diabetes (T1D) remain poorly understood. A possibility is that parallel changes in both T cells and target cells provoke autoimmune attack. We previously documented greater Ca2+ transients in fibroblasts from T1D subjects than non-T1D after exposure to fatty acids (FA) and tumor necrosis factor α (TNFα). These data indicate that metabolic and signal transduction defects present in T1D can be elicited ex vivo in isolated cells. Changes that precede T1D, including inflammation, may activate atypical responses in people that are genetically predisposed to T1D...
2017: PloS One
https://www.readbyqxmd.com/read/29205691/intravenous-immunoglobulin-in-drug-and-device-refractory-patients-with-the-symptoms-of-gastroparesis-an-open-label-study
#20
M Ashat, A Lewis, H Liaquat, A Stocker, L McElmurray, V Vedanarayanan, K Soota, T Howell, A Kedar, J Obert, T L Abell
BACKGROUND: Gastroparesis is a complex clinical entity; many aspects of which remain unknown. Although most patients have idiopathic, diabetic, or postsurgical gastroparesis, many are thought to have measurable neuromuscular abnormalities. Immunotherapy has recently been utilized to treat suspected autoimmune gastrointestinal dysmotility. METHODS: Fourteen patients with symptoms of gastroparesis (Gp) who were refractory to drug/device were selected from 443 Gp patients from 2013 to 2015 who were treated at the University of Louisville motility center...
December 4, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
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