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https://www.readbyqxmd.com/read/28649880/understanding-type-1-diabetes-through-proteomics
#1
Inne Crèvecoeur, Saurabh Vig, Chantal Mathieu, Lut Overbergh
Auto-immunity against pancreatic beta-cells leads to an absolute shortage of the hormone insulin, resulting in hyperglycemia and the onset of type 1 diabetes (T1D). Proteomic approaches have been used to elucidate the mechanisms of beta-cell dysfunction and death. Areas covered: In the present review, we discuss discoveries in the beta-cell proteome that have contributed to better insights in the role of the beta-cell in T1D. Techniques, such as 2D-DIGE and MALDI imaging, together with new approaches for sample preparation, including laser capture microdissection and immunopeptidomics, have resulted in novel mechanistic insights in the pathogenesis of T1D...
June 26, 2017: Expert Review of Proteomics
https://www.readbyqxmd.com/read/28649865/dental-stem-cells-recent-progresses-in-tissue-engineering-and-regenerative-medicine
#2
João Botelho, Maria Alzira Cavacas, Vanessa Machado, José João Mendes
Since the disclosure of adult mesenchymal stem cells (MSCs) there have been an intense investigation on the characteristics of these cells and their potentialities. Dental Stem Cells (DSCs) are MSC-like populations with self-renewal capacity and multidifferentiation potential. Currently, there are five main DSCs, dental pulp stem cells (DPSCs), stem cells from exfoliated deciduous teeth (SHED), stem cells from apical papilla (SCAP), periodontal ligament stem cells (PDLSCs), and Dental Follicle Precursor Cells (DFPCs)...
June 24, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28642703/different-regulation-of-interleukin-1-production-and-activity-in-monocytes-and-macrophages-innate-memory-as-an-endogenous-mechanism-of-il-1-inhibition
#3
Mariusz P Madej, Elfi Töpfer, Diana Boraschi, Paola Italiani
Production and activity of interleukin (IL)-1β are kept under strict control in our body, because of its powerful inflammation-promoting capacity. Control of IL-1β production and activity allows IL-1 to exert its defensive activities without causing extensive tissue damage. Monocytes are the major producers of IL-1β during inflammation, but they are also able to produce significant amounts of IL-1 inhibitors such as IL-1Ra and the soluble form of the decoy receptor IL-1R2, in an auto-regulatory feedback loop...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28639625/microrna-34a-dependent-regulation-of-axl-controls-the-activation-of-dendritic-cells-in-inflammatory-arthritis
#4
Mariola Kurowska-Stolarska, Stefano Alivernini, Emma Garcia Melchor, Aziza Elmesmari, Barbara Tolusso, Clare Tange, Luca Petricca, Derek S Gilchrist, Gabriele Di Sante, Chantal Keijzer, Lynn Stewart, Clara Di Mario, Vicky Morrison, James M Brewer, Duncan Porter, Simon Milling, Ronald D Baxter, David McCarey, Elisa Gremese, Greg Lemke, Gianfranco Ferraccioli, Charles McSharry, Iain B McInnes
Current treatments for rheumatoid arthritis (RA) do not reverse underlying aberrant immune function. A genetic predisposition to RA, such as HLA-DR4 positivity, indicates that dendritic cells (DC) are of crucial importance to pathogenesis by activating auto-reactive lymphocytes. Here we show that microRNA-34a provides homoeostatic control of CD1c(+) DC activation via regulation of tyrosine kinase receptor AXL, an important inhibitory DC auto-regulator. This pathway is aberrant in CD1c(+) DCs from patients with RA, with upregulation of miR-34a and lower levels of AXL compared to DC from healthy donors...
June 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28634486/%C3%AE-cell-replacement-strategies-the-increasing-need-for-a-%C3%AE-cell-dogma
#5
REVIEW
Andhira Vieira, Noémie Druelle, Fabio Avolio, Tiziana Napolitano, Sergi Navarro-Sanz, Serena Silvano, Patrick Collombat
Type 1 diabetes is an auto-immune disease resulting in the loss of pancreatic β-cells and, consequently, in chronic hyperglycemia. Insulin supplementation allows diabetic patients to control their glycaemia quite efficiently, but treated patients still display an overall shortened life expectancy and an altered quality of life as compared to their healthy counterparts. In this context and due to the ever increasing number of diabetics, establishing alternative therapies has become a crucial research goal. Most current efforts therefore aim at generating fully functional insulin-secreting β-like cells using multiple approaches...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28634388/mito-xenophagic-killing-of-bacteria-is-coordinated-by-a-metabolic-switch-in-dendritic-cells
#6
Nadine Radomski, Danny Kägebein, Elisabeth Liebler-Tenorio, Axel Karger, Elke Rufer, Birke Andrea Tews, Stefanie Nagel, Rebekka Einenkel, Anne Müller, Annica Rebbig, Michael R Knittler
Chlamydiae are bacterial pathogens that grow in vacuolar inclusions. Dendritic cells (DCs) disintegrate these compartments, thereby eliminating the microbes, through auto/xenophagy, which also promotes chlamydial antigen presentation via MHC I. Here, we show that TNF-α controls this pathway by driving cytosolic phospholipase (cPLA)2-mediated arachidonic acid (AA) production. AA then impairs mitochondrial function, which disturbs the development and integrity of these energy-dependent parasitic inclusions, while a simultaneous metabolic switch towards aerobic glycolysis promotes DC survival...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28633038/hematopoietic-cell-transplantation-for-diffuse-large-b-cell-and-follicular-lymphoma-current-controversies-and-advances
#7
REVIEW
Narendranath Epperla, Mehdi Hamadani
Non-Hodgkin's lymphoma (NHL) constitutes a collection of lymphoproliferative disorders with diverse biologic, histologic, and clinical features. With a better understanding of the molecular pathogenesis, recently there have been major advances in the treatment of NHLs including addition of novel monoclonal antibodies, targeted therapies, and immune activators to the therapy armamentarium. Despite these remarkable developments, autologous hematopoietic cell transplantation (auto-HCT) remains not only a standard-of-care curative option for aggressive NHL but also an important therapeutic option for indolent NHL...
June 13, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28624107/recurrence-of-primary-sclerosing-cholangitis-primary-biliary-cholangitis-and-auto-immune-hepatitis-after-liver-transplantation
#8
REVIEW
T Visseren, S Darwish Murad
Liver transplantation is a well-accepted treatment for decompensated chronic liver disease due to primary sclerosing cholangitis (PSC), primary biliary cholangitis (PBC) and auto-immune hepatitis (AIH). Survival after liver transplantation is generally good with 1 and 5-year survival rates around 90% and 70-85%. After transplantation, however, these diseases recur in 8.6-27% (rPSC), 10.9-42.3% (rPBC) and 7-42% (rAIH), and this poses significant challenges in terms of management and graft outcome in these patients...
April 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/28617559/blockade-of-il-17-alleviated-inflammation-in-rat-arthritis-and-mmp-13-expression
#9
X-L Shui, W Lin, C-W Mao, Y-Z Feng, J-Z Kong, S-M Chen
OBJECTIVE: Rheumatoid arthritis (RA) is one systemic auto-immune disorder featured as chronic synovitis and can destruct joint cartilage. Fibroblast-like synoviocyte (FLS) secretes various factors affecting chondrocyte matrix and degradation. This study thus investigated the effect of interleukin-17A (IL-17A) on FLS and osteoclast. MATERIALS AND METHODS: Type II collagen-induced arthritis (CIA) rats were assigned to CIA model, CIA + IgG1 isotype, and CIA + Anti-Rat IL-17A groups...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28617221/identification-of-cancer-specific-motifs-in-mimotope-profiles-of-serum-antibody-repertoire
#10
Ekaterina Gerasimov, Alex Zelikovsky, Ion Măndoiu, Yurij Ionov
BACKGROUND: For fighting cancer, earlier detection is crucial. Circulating auto-antibodies produced by the patient's own immune system after exposure to cancer proteins are promising bio-markers for the early detection of cancer. Since an antibody recognizes not the whole antigen but 4-7 critical amino acids within the antigenic determinant (epitope), the whole proteome can be represented by a random peptide phage display library. This opens the possibility to develop an early cancer detection test based on a set of peptide sequences identified by comparing cancer patients' and healthy donors' global peptide profiles of antibody specificities...
June 7, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28612332/cocaine-levamisole-induced-vasculitis-vasculopathy-syndrome
#11
REVIEW
Javier Marquez, Lina Aguirre, Carolina Muñoz, Andres Echeverri, Mauricio Restrepo, Luis F Pinto
PURPOSE OF REVIEW: To understand the clinical spectrum of cocaine-levamisole-induced vasculitis. Worldwide recreational drug consumption is high among the adult population from various social strata. The use of cocaine with levamisole, a frequently added antiparasitic diluent, favors the manifestations of vasculitic lesions, especially in the skin. RECENT FINDINGS: New insights into immunological mechanisms involved in the pathogenesis of the disease. There are still many unknown aspects in the pathogenesis of this disease, such as the immune system interaction with p-ANCAs and the release of inflammatory NETs (neutrophil extracellular traps), which are the origin of auto-antigens and tissue damage, manifesting as vasculitic purpura on the skin...
June 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28606032/metformin-a-new-era-for-an-old-drug-in-the-treatment-of-immune-mediated-disease
#12
Mark Schuiveling, Nadia Vazirpanah, Timothy R D J Radstake, Maili Zimmermann, Jasper C A Broen
Metformin, a widely prescribed blood glucose normalizing antidiabetic drug, is now beginning to receive increasing attention due to its potential anti-inflammatory properties. Metformin suppresses immune responses mainly through its direct effect on the cellular functions of various immune cell types by induction of AMPK and subsequent inhibition of mTORC1, and by inhibition of mitochondrial ROS production. Among key immune events, this results in inhibited monocyte to macrophage differentiation and restrained inflammatory capacity of activated macrophages...
June 12, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28601686/exaggerated-t-follicular-helper-cell-responses-in-lrba-deficiency-due-to-failure-of-ctla4-mediated-regulation
#13
Fayhan J Alroqi, Louis-Marie Charbonnier, Safa Baris, Ayca Kiykim, Janet Chou, Craig D Platt, Abdulrahman Algassim, Sevgi Keles, Bandar K Al Saud, Fowzan S Alkuraya, Michael Jordan, Raif S Geha, Talal A Chatila
PURPOSE: LRBA (lipopolysaccharide-responsive beige like anchor protein) and CTLA4 (cytotoxic T lymphocyte antigen 4) deficiencies give rise to overlapping phenotypes of immune dysregulation and autoimmunity, with dramatically increased frequencies of circulating T Follicular helper (cTFH) cells. We sought to determine the mechanisms of cTFH cell dysregulation in LRBA deficiency and the utility of monitoring cTFH cells as a correlate of clinical response to CTLA4-Ig therapy. METHODS: cTFH cells and other lymphocyte subpopulations were characterized...
June 7, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28599286/decitabine-inhibits-t-cell-proliferation-via-a-novel-tet2-dependent-mechanism-and-exerts-potent-protective-effect-in-mouse-auto-and-allo-immunity-models
#14
Xue Wang, Jun Wang, Yong Yu, Tonghui Ma, Ping Chen, Bing Zhou, Ran Tao
Multiple sclerosis (MS) is an autoimmune disease characterized by the dysregulated immune response including innate and adaptive immune responses. Increasing evidence has proven the importance of epigenetic modification in the progression of MS. Recent studies revealed that low-dose decitabine (Dec, 5-Aza-2'-deoxycytidine), which incorporates into replicating DNA and inhibits DNA methylation, could prevent experimental autoimmune encephalomyelitis (EAE) development by increasing the number of regulatory T cells (Tregs)...
May 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28598564/withdrawn-celecoxib-for-rheumatoid-arthritis
#15
REVIEW
Sarah E Garner, Dogan Fidan, Ruth R Frankish, Maria Judd, Beverley Shea, Tanveer Towheed, Peter Tugwell, George A Wells
BACKGROUND: Rheumatoid arthritis (RA) is a systemic auto-immune disorder, involving persistent joint inflammation. NSAIDs are used to control the symptoms of RA, but are associated with significant gastro-intestinal toxicity, including a risk of potentially life threatening gastroduodenal perforations, ulcers and bleeds. The NSAIDs known as the selective Cox II inhibitors, of which celecoxib is a member, were developed in order to reduce the GI toxicity, but are more expensive. OBJECTIVES: To establish the efficacy and safety of celecoxib in the management of RA by systematic review of available evidence...
June 9, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28597983/celecoxib-for-rheumatoid-arthritis
#16
REVIEW
Mahir Fidahic, Antonia Jelicic Kadic, Mislav Radic, Livia Puljak
BACKGROUND: Rheumatoid arthritis is a systemic auto-immune disorder that causes widespread and persistent inflammation of the synovial lining of joints and tendon sheaths. Presently, there is no cure for rheumatoid arthritis and treatment focuses on managing symptoms such as pain, stiffness and mobility, with the aim of achieving stable remission and improving mobility. Celecoxib is a selective non-steroidal anti-inflammatory drug (NSAID) used for treatment of people with rheumatoid arthritis...
June 9, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28588825/a-presentation-of-postcardiac-injury-syndrome-after-successful-chronic-total-occlusion-percutaneous-coronary-intervention-using-dissection-re-entry-techniques
#17
Gabby Elbaz-Greener, Harindra C Wijeysundera
Retrograde dissection re-entry can cause pericardial trauma of sufficient degree to lead to the development of an auto-immune postpericardial injury syndrome. Clinical suspicion for this condition should be high in the event of fever, symptoms, pericardial/pleural effusion, and pleuritic chest pain following chronic total occlusion (CTO) Post cardiac injury syndromes (PCI).
June 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28583871/studies-on-glycoxidatively-modified-human-igg-implications-in-immuno-pathology-of-type-2-diabetes-mellitus
#18
Sidra Islam, Moinuddin, Abdul Rouf Mir, Mir Yasir Arfat, Khursheed Alam, Asif Ali
Structural rearrangements and condensations of proteins under hyperglycemic stress have been implicated in various pathological disorders. This study aims to probe the role of methylglyoxal (MG) modified human immunoglobulin G (MG-IgG) in immuno-pathology of type 2 diabetes mellitus (T2DM). MG was found to perturb the structural integrity of IgG, affect its aromatic micro-environment and cause the generation of advanced glycation end products (AGEs) and aggregate adducts. It liberated the hydrophobic pockets of the protein, reduced its β pleated sheet structure and affected its tertiary conformation...
June 3, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28583541/comparative-analysis-of-the-clinical-outcomes-of-liver-transplantation-for-probable-and-definite-auto-immune-hepatitis-by%C3%A2-international-diagnostic-scoring-criteria
#19
C W Cho, C H D Kwon, J M Kim, G-S Choi, J-W Joh, S-K Lee
BACKGROUND: Liver transplantation (LT) is an effective treatment for patients with end-stage liver disease caused by auto-immune hepatitis (AIH). However, diagnosis of AIH can be challenging for patients with end-stage liver disease at the time of transplantation. We classified patients into "probable" or "definite" AIH groups, using the diagnostic criteria of the International Autoimmune Hepatitis Group, and compared the clinical outcomes of AIH after LT in these 2 groups. METHODS: We performed a retrospective study of 18 patients who were diagnosed with AIH and underwent LT from March 2003 to March 2015 at a single institute...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28582758/rheumatoid-arthritis-recent-advances-on-its-etiology-role-of-cytokines-and-pharmacotherapy
#20
REVIEW
Javaid Alam, Ibrahim Jantan, Syed Nasir Abbas Bukhari
An autoimmune disease is defined as a clinical syndrome resulted from an instigation of both T cell and B cell or individually, in the absence of any present infection or any sort of distinguishable cause. Clonal deletion of auto reactive cells remains the central canon of immunology for decades, keeping the role of T cell and B cell aside, which are actually the guards to recognize the entry of foreign body. According to NIH, 23.5 million Americans are all together affected by these diseases. They are rare, but with the exception of RA...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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