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Systemic autoimmunity

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https://www.readbyqxmd.com/read/28738331/future-perspectives-in-sleep-medicine
#1
Leh-Kiong Anne Huon, Christian Guilleminault
"Sleep Medicine" is now a specialty in its own right. Currently, there is increasing recognition of the very negative impact sleep disorders have on learning, education, safety, and quality of life. Technological advances will help us to break down diagnoses (e.g., narcolepsy has now been subdivided into types 1 and 2, depending upon the hypocretin levels in the spinal fluid) and to discover relationships to other bodily systems (e.g., type 1 narcolepsy potentially being an autoimmune disorder). The modern lifestyle of many, as characterized by a shortening of sleep periods, shift work, jet lag, and the need to be constantly available, means that advances in sleep medicine may result in a major understanding of more balanced "work-rest lifestyle" modifications...
2017: Advances in Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28738209/psoriasis-a-mixed-autoimmune-and-autoinflammatory-disease
#2
REVIEW
Yun Liang, Mrinal K Sarkar, Lam C Tsoi, Johann E Gudjonsson
In recent years marked progress has been made in our understanding of the critical biologic and immunologic pathways involved in psoriasis. Genetic studies have demonstrated that susceptibility to psoriasis involves components of both the adaptive and innate immune system and not surprisingly activation of both of these arms of the immune system is found in psoriatic skin. While adaptive immune responses predominate in chronic plaque psoriasis, innate and autoinflammatory responses dominate in pustular forms of psoriasis, with other clinical subtypes extending on a spectrum between plaque and pustular psoriasis...
July 21, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28737980/nitration-of-h2b-histone-elicits-an-immune-response-in-experimental-animals
#3
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/28737506/microglia-and-c9orf72-in-neuroinflammation-and-als-and-frontotemporal-dementia
#4
Deepti Lall, Robert H Baloh
Amyotrophic lateral sclerosis (ALS) is a degenerative disorder that is characterized by loss of motor neurons and shows clinical, pathological, and genetic overlap with frontotemporal dementia (FTD). Activated microglia are a universal feature of ALS/FTD pathology; however, their role in disease pathogenesis remains incompletely understood. The recent discovery that ORF 72 on chromosome 9 (C9orf72), the gene most commonly mutated in ALS/FTD, has an important role in myeloid cells opened the possibility that altered microglial function plays an active role in disease...
July 24, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28736835/peptide-mimetics-of-immunoglobulin-a-iga-and-fc%C3%AE-ri-block-iga-induced-human-neutrophil-activation-and-migration
#5
Marieke H Heineke, Lydia P E van der Steen, Rianne M Korthouwer, J Joris Hage, Johannes P M Langedijk, Joris J Benschop, Jantine E Bakema, Jerry W Slootstra, Marjolein van Egmond
The cross-linking of the IgA Fc receptor (FcαRI) by IgA induces release of the chemoattractant LTB4, thereby recruiting neutrophils in a positive feedback loop. IgA autoantibodies of patients with autoimmune blistering skin diseases therefore induce massive recruitment of neutrophils, resulting in severe tissue damage. To interfere with neutrophil mobilization and reduce disease morbidity, we developed a panel of specific peptides mimicking either IgA or FcαRI sequences. CLIPS technology was used to stabilize three-dimensional structures and to increase peptides' half-life...
July 24, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28736556/ras-signaling-inhibitors-attenuate-disease-in-adjuvant-induced-arthritis-via-targeting-pathogenic-antigen-specific-th17-type-cells
#6
Morad Zayoud, Victoria Marcu-Malina, Einav Vax, Jasmine Jacob-Hirsch, Galit Elad-Sfadia, Iris Barshack, Yoel Kloog, Itamar Goldstein
The Ras family of GTPases plays an important role in signaling nodes downstream to T cell receptor and CD28 activation, potentially lowering the threshold for T-cell receptor activation by autoantigens. Somatic mutation in NRAS or KRAS may cause a rare autoimmune disorder coupled with abnormal expansion of lymphocytes. T cells from rheumatoid arthritis (RA) patients show excessive activation of Ras/MEK/ERK pathway. The small molecule farnesylthiosalicylic acid (FTS) interferes with the interaction between Ras GTPases and their prenyl-binding chaperones to inhibit proper plasma membrane localization...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28736547/thyroid-involvement-in-hepatitis-c-virus-infected-patients-with-without-mixed-cryoglobulinemia
#7
REVIEW
Clodoveo Ferri, Michele Colaci, Poupak Fallahi, Silvia Martina Ferrari, Alessandro Antonelli, Dilia Giuggioli
Thyroid involvement is a common condition that can be recorded during the natural course of different systemic rheumatic diseases, including the mixed cryoglobulinemia (MC) syndrome or cryoglobulinemic vasculitis. MC is triggered by hepatitis C virus (HCV) chronic infection in the majority of cases; it represents the prototype of autoimmune-lymphoproliferative disorders complicating a significant proportion of patients with chronic HCV infection. HCV is both hepato- and lymphotropic virus responsible for a great number of autoimmune/lymphoproliferative and/or neoplastic disorders...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28736206/bpag1-in-muscles-structure-and-function-in-skeletal-cardiac-and-smooth-muscle
#8
REVIEW
Masao Horie, Nozomu Yoshioka, Hirohide Takebayashi
BPAG1, also known as Dystonin or BP230, belongs to the plakin family of proteins, which has multiple cytoskeleton-binding domains. Several BPAG1 isoforms are produced by a single BPAG1 genomic locus using different promoters and exons. For example, BPAG1a, BPAG1b, and BPAG1e are predominantly expressed in the nervous system, muscle, and skin, respectively. Among BPAG1 isoforms, BPAG1e is well studied because it was first identified as an autoantigen in patients with bullous pemphigoid, an autoimmune skin disease...
July 20, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28736194/the-epigenetic-drug-trichostatin-a-ameliorates-experimental-autoimmune-encephalomyelitis-via-t-cell-tolerance-induction-and-impaired-influx-of-t-cells-into-the-spinal-cord
#9
Arathi Jayaraman, Advait Soni, Bellur Prabhakar, Mark Holterman, Sundararajan Jayaraman
Multiple sclerosis is a T cell mediated chronic demyelinating disease of the central nervous system. Although currently available therapies reduce relapses, they do not facilitate tolerization of myelin antigen-specific T lymphocytes to ensure prolonged protection against multiple sclerosis. Here, we show that treatment of NOD mice with the histone deacetylase inhibitor, Trichostatin A affords robust protection against myelin peptide induced experimental autoimmune encephalomyelitis, a mouse model of multiple sclerosis...
July 20, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28735431/a-systematic-review-of-primary-sj%C3%A3-gren-s-syndrome-in-male-and-paediatric-populations
#10
Simrun Virdee, James Greenan-Barrett, Coziana Ciurtin
Primary Sjögren's syndrome (pSS) is a chronic multisystem autoimmune rheumatic disease characterised by female predominance. Although the disease is rare in the male and paediatric populations, it has been suggested that it may have a different disease phenotype, which has not been investigated before using a systematic approach. A systematic literature search of PubMed databases (updated to December 2016) was performed to identify all published data on the epidemiological, clinical and laboratory manifestations of pSS in the male and paediatric populations...
July 22, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28735350/inflammatory-joint-disorders-and-neutrophilic-dermatoses-a-comprehensive-review
#11
REVIEW
Massimo Cugno, Roberta Gualtierotti, Pier Luigi Meroni, Angelo Valerio Marzano
Rheumatoid arthritis and spondyloarthritis are inflammatory joint disorders with an autoimmune pathogenesis and systemic involvement. The skin is one of the most frequently affected extraarticular sites with a number of manifestations or distinct diseases, including common conditions, such as rheumatoid nodules and psoriasis, and rare diseases like neutrophilic dermatoses. The latter are clinically characterised by polymorphic lesions, including pustules, bullae, abscesses, papules, nodules, plaques and ulcers, and histologically by neutrophil-rich inflammatory infiltrates...
July 22, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28733878/role-of-tgf-%C3%AE-in-self-peptide-regulation-of-autoimmunity
#12
REVIEW
Bhagirath Singh, Michael D Krawetz, Rachel M De Lima, Rinee Mukherjee, Pratibha Chaturvedi, Edwin Lee-Chan, Edward H Leiter, Kelly L Summers
Transforming growth factor (TGF)-β has been implicated in regulation of the immune system, including autoimmunity. We have found that TGF-β is readily produced by T cells following immunization with self-peptide epitopes that downregulate autoimmune responses in type 1 diabetes (T1D) prone nonobese diabetic (NOD) mice. These include multiple peptide epitopes derived from the islet β-cell antigens GAD65 (GAD65 p202-221, GAD65 p217-236), GAD67 (GAD67 p210-229, GAD67 p225-244), IGRP (IGRP p123-145, IGRP p195-214) and insulin B-chain (Ins...
July 21, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28733313/granzyme-a-deficiency-breaks-immune-tolerance-and-promotes-autoimmune-diabetes-through-a-type-i-interferon-dependent-pathway
#13
Zia Ua Mollah, Hong Sheng Quah, Kate L Graham, Gaurang Jhala, Balasubramanian Krishnamurthy, Joanna Francisca M Dharma, Jonathan Chee, Prerak M Trivedi, Evan G Pappas, Leanne Mackin, Edward Pf Chu, Satoru Akazawa, Stacey Fynch, Charlotte Hodson, Andrew J Deans, Joseph A Trapani, Mark Mw Chong, Phillip I Bird, Thomas C Brodnicki, Helen E Thomas, Thomas Wh Kay
Granzyme A is a protease implicated in the degradation of intracellular DNA. Nucleotide complexes are known triggers of systemic autoimmunity, but a role in organ-specific autoimmune disease has not been demonstrated. To investigate whether such a mechanism could be an endogenous trigger for autoimmunity, we examined the impact of granzyme A deficiency in the NOD mouse model of autoimmune diabetes. Granzyme A deficiency resulted in an increased incidence in diabetes associated with accumulation of single stranded DNA in immune cells and induction of an interferon response in pancreatic islets...
July 21, 2017: Diabetes
https://www.readbyqxmd.com/read/28733303/oral-glucocorticoid-use-and-osteonecrosis-in-children-and-adults-with-chronic-inflammatory-diseases-a-population-based-cohort-study
#14
Daniel B Horton, Kevin Haynes, Michelle R Denburg, Mihir M Thacker, Carlos D Rose, Mary E Putt, Mary B Leonard, Brian L Strom
OBJECTIVES: We studied oral glucocorticoids and osteonecrosis, a rare but serious bone disease, in individuals with various chronic inflammatory diseases. We hypothesised that we would find stronger associations in adults versus children and in people with autoimmune diseases. DESIGN: Retrospective cohort study. SETTING: Population-representative data (1994-2013) from general practices in the UK. PARTICIPANTS: Children and adults diagnosed with asthma; inflammatory bowel disease; juvenile, psoriatic or rheumatoid arthritis; psoriasis; or systemic lupus...
July 21, 2017: BMJ Open
https://www.readbyqxmd.com/read/28732510/protective-and-therapeutic-role-of-2-carba-cyclic-phosphatidic-acid-in-demyelinating-disease
#15
Shinji Yamamoto, Kota Yamashina, Masaki Ishikawa, Mari Gotoh, Sosuke Yagishita, Kensuke Iwasa, Kei Maruyama, Kimiko Murakami-Murofushi, Keisuke Yoshikawa
BACKGROUND: Multiple sclerosis is a neuroinflammatory demyelinating and neurodegenerative disease of the central nervous system characterized by recurrent and progressive demyelination/remyelination cycles, neuroinflammation, oligodendrocyte loss, demyelination, and axonal degeneration. Cyclic phosphatidic acid (cPA) is a natural phospholipid mediator with a unique cyclic phosphate ring structure at the sn-2 and sn-3 positions of the glycerol backbone. We reported earlier that cPA elicits a neurotrophin-like action and protects hippocampal neurons from ischemia-induced delayed neuronal death...
July 21, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28732437/effect-of-microrna-21-transfection-on-in-vitro-differentiation-of-human-naive-cd4-t-cells-to-regulatory-t-cells
#16
Haideh Namdari, Mojgan Ghayedi, Jamshid Hadjati, Farhad Rezaei, Kurosh Kalantar, Parisa Rahimzadeh, Eisa Salehi
Regulatory T cells (Tregs) are important components of the immune system that modulate responses of other cells. These cells are involved in peripheral tolerance mechanisms, so defect in development and function of these cells can result in autoimmune disease. Increasing evidence supports the role of microRNAs-21 (miR-21) in the regulation of forkhead box P3 (Foxp3) expression in Tregs. We aimed to determine whether miR-21 transfection to naive CD4+ T cells can be useful in generation of iTregs in-vitro. We investigated in-vitro differentiation of miR-21-transfected naive CD4+ T cells to iTregs and compared these iTregs to cytokine-differentiated iTregs and control group...
June 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/28731407/t-cell-receptor-repertoires-of-mice-and-humans-are-clustered-in-similarity-networks-around-conserved-public-cdr3-sequences
#17
Asaf Madi, Asaf Poran, Eric Shifrut, Shlomit Reich-Zeliger, Erez Greenstein, Irena Zaretsky, Tomer Arnon, Francois Van Laethem, Alfred Singer, Jinghua Lu, Peter D Sun, Irun R Cohen, Nir Friedman
Diversity of T cell receptor (TCR) repertoires, generated by somatic DNA rearrangements, is central to immune system function. However, the level of sequence similarity of TCR repertoires within and between species has not been characterized. Using network analysis of high-throughput TCR sequencing data, we found that abundant CDR3-TCRβ sequences were clustered within networks generated by sequence similarity. We discovered a substantial number of public CDR3-TCRβ segments that were identical in mice and humans...
July 21, 2017: ELife
https://www.readbyqxmd.com/read/28731290/autoantibodies-against-pfdn2-are-associated-with-an-increased-risk-of-type-2-diabetes-a-case-control-study
#18
Douglas C Chang, Paolo Piaggi, Robert L Hanson, William C Knowler, Clifton Bogardus, Jonathan Krakoff
BACKGROUND: The adaptive immune system is involved in type 2 diabetes mellitus (T2DM), indicating the presence of unidentified autoantibodies that might be useful biomarkers for emerging immunomodulatory therapy. A prior microarray study with a small number of participants suggested the association of novel autoantibodies with T2DM in Southwest American Indians (SAIs). We therefore sought to determine whether antibodies against 14 target proteins are associated with T2DM in a large case-control study...
July 21, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28730968/modulation-of-the-immune-system-for-the-treatment-of-glaucoma
#19
Katharina Bell, Nadine von Thun Und Hohenstein-Blaul, Julia Teister, Franz H Grus
At present intraocular pressure (IOP) lowering therapies are the only approach to treat glaucoma. Neuroprotective strategies to protect the retinal ganglion cells (RGC) from apoptosis are lacking to date. Results from clinical studies revealed altered immunoreactivities against retinal and optic nerve antigens in sera and aqueous humor of glaucoma patients and point toward an autoimmune involvement in glaucomatous neurodegeneration and RGC death. IgG accumulations along with plasma cells were found localised in human glaucomatous retinae in a pro-inflammatory environment possibly maintained by microglia...
July 19, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28730919/an-update-on-biomarker-discovery-and-use-in-systemic-sclerosis
#20
Takashi Matsushita, Kazuhiko Takehara
Systemic sclerosis (SSc) is an autoimmune disease characterized by excessive extracellular matrix deposition in the skin and internal organs. Three major abnormalities, autoimmunity, vasculopathy, and fibrosis, are considered to play important roles in the pathophysiology of SSc. SSc is a heterogeneous disease with clinical features, disease progress, therapeutic response, and prognosis. Therefore, identification of biomarkers, which can predict the course of the disease, is required for the progress of clinical practice...
July 21, 2017: Expert Review of Molecular Diagnostics
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