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https://www.readbyqxmd.com/read/29662492/rnase-h2-loss-in-murine-astrocytes-results-in-cellular-defects-reminiscent-of-nucleic-acid-mediated-autoinflammation
#1
Kareen Bartsch, Markus Damme, Tommy Regen, Lore Becker, Lillian Garrett, Sabine M Hölter, Katharina Knittler, Christopher Borowski, Ari Waisman, Markus Glatzel, Helmut Fuchs, Valerie Gailus-Durner, Martin Hrabe de Angelis, Björn Rabe
Aicardi-Goutières syndrome (AGS) is a rare early onset childhood encephalopathy caused by persistent neuroinflammation of autoimmune origin. AGS is a genetic disorder and >50% of affected individuals bear hypomorphic mutations in ribonuclease H2 (RNase H2). All available RNase H2 mouse models so far fail to mimic the prominent CNS involvement seen in AGS. To establish a mouse model recapitulating the human disease, we deleted RNase H2 specifically in the brain, the most severely affected organ in AGS. Although RNase H2ΔGFAP mice lacked the nuclease in astrocytes and a majority of neurons, no disease signs were apparent in these animals...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29595228/autoinflammation-behind-the-curtain
#2
EDITORIAL
A A Navarini, L E French
No abstract text is available yet for this article.
March 2018: British Journal of Dermatology
https://www.readbyqxmd.com/read/29572183/tnfaip3-haploinsufficiency-is-the-cause-of-autoinflammatory-manifestations-in-a-patient-with-a-deletion-of-13mb-on-chromosome-6
#3
Clara Franco-Jarava, Hongying Wang, Andrea Martin-Nalda, de la Sierra Daniel Alvarez, Marina García-Prat, Domingo Bodet, Vicenç García-Patos, Alberto Plaja, Francesc Rudilla, Victor Rodriguez-Sureda, Laura García-Latorre, Ivona Aksentijevich, Roger Colobran, Pere Soler-Palacín
There is scarce literature about autoinflammation in syndromic patients. We describe a patient who, in addition to psychomotor and growth delay, presented with fevers, neutrophilic dermatosis, and recurrent orogenital ulcers. Comparative Genomic Hybridization (CGH) array permitted to identify a 13.13Mb deletion on chromosome 6, encompassing 53 genes, and including TNFAIP3 gene (A20). A20 is a potent inhibitor of the NF-kB signalling pathway and restricts inflammation via its deubiquitinase activity. Western blotting and immunoprecipitation assays showed decreased A20 expression and increased phosphorylation of p65 and IkBa...
March 20, 2018: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/29538758/using-genes-to-triangulate-the-pathophysiology-of-granulomatous-autoinflammatory-disease-nod2-plcg2-and-lacc1
#4
Ann Marie Szymanski, Michael J Ombrello
The intersection of granulomatosis and autoinflammatory disease is a rare occurrence that can be generally subdivided into purely granulomatous phenotypes and disease spectra that are inclusive of granulomatous features. NOD2 (nucleotide binding oligomerization domain containing 2)-related disease, which includes Blau syndrome and early onset sarcoidosis, is the prototypic example of granulomatous inflammation in the context of monogenic autoinflammation. Granulomatous inflammation has also been observed in two related autoinflammatory diseases caused by mutations in PLCG2 (phospholipase C gamma 2)...
March 12, 2018: International Immunology
https://www.readbyqxmd.com/read/29515565/a20-tumor-necrosis-factor-%C3%AE-induced-protein-3-in-immune-cells-controls-development-of-autoinflammation-and-autoimmunity-lessons-from-mouse-models
#5
REVIEW
Tridib Das, Zhongli Chen, Rudi W Hendriks, Mirjam Kool
Immune cell activation is a stringently regulated process, as exaggerated innate and adaptive immune responses can lead to autoinflammatory and autoimmune diseases. Perhaps the best-characterized molecular pathway promoting cell activation is the nuclear factor-κB (NF-κB) signaling pathway. Stimulation of this pathway leads to transcription of numerous pro-inflammatory and cell-survival genes. Several mechanisms tightly control NF-κB activity, including the key regulatory zinc finger (de)ubiquitinating enzyme A20/tumor necrosis factor α-induced protein 3 (TNFAIP3)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29505775/autoimmunity-autoinflammation-and-infection-in-uveitis
#6
John V Forrester, Lucia Kuffova, Andrew D Dick
PURPOSE: To review the pathogenesis of uveitis in light of recent advances in our understanding of innate and adaptive immune responses and their regulation. DESIGN: A perspective. METHODS: The methods included a review of prevailing views on the pathogenesis of uveitis, and an analysis of developments in immunology which impact on its conceptual basis, particularly the concept of immunological tolerance and its loss in autoimmunity. Importantly, the role of infection in the pathogenesis of uveitis is evaluated...
March 2, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29465622/autoinflammation
#7
(no author information available yet)
No abstract text is available yet for this article.
March 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29431217/the-role-of-mast-cells-in-autoinflammation
#8
REVIEW
Hanna Bonnekoh, Jörg Scheffel, Naotomo Kambe, Karoline Krause
The concept of autoinflammation was proposed to define a new class of immune disorders categorized by self-directed inflammation that is driven via activation of innate immune pathways. Within innate immunity, inflammasomes serve as intracellular signaling platforms to endogenous danger molecules and pathogens. Their key function is the cleavage of pro-interleukin-1β (pro-IL-1β) into its active form to promote inflammation and programmed cell death. A growing number of inflammasome sensors were described, among which NLR family pyrin domain containing 3 (NLRP3) is the best-studied sensor...
March 2018: Immunological Reviews
https://www.readbyqxmd.com/read/29426321/systemic-autoinflammation-with-intractable-epilepsy-managed-with-interleukin-1-blockade
#9
Allen D DeSena, Thuy Do, Grant S Schulert
BACKGROUND: Autoinflammatory disorders are distinguished by seemingly random episodes of systemic hyperinflammation, driven in particular by IL-1. Recent pre-clinical work has shown a key role for IL-1 in epilepsy in animal models, and therapies for autoinflammation including IL-1 blockade are proposed for refractory epilepsy. CASE PRESENTATION: Here, we report an adolescent female with signs of persistent systemic inflammation and epilepsy unresponsive to multiple anti-epileptic drugs (AED)...
February 9, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29425484/sort-your-self-out
#10
Carolina Uggenti, Yanick J Crow
Discrimination between viral and self-derived nucleic acid species is crucial in maintaining effective antiviral immunity whilst avoiding autoinflammation. Ahmad et al. and Chung et al. delineate the consequences of MDA5 gain of function and loss of ADAR1 activity, highlighting the blurring of the concept of self and non-self when considering endogenous retroelements.
February 8, 2018: Cell
https://www.readbyqxmd.com/read/29422292/autoinflammatory-keratinization-diseases-an-emerging-concept-encompassing-various-inflammatory-keratinization-disorders-of-the-skin
#11
Masashi Akiyama, Takuya Takeichi, John A McGrath, Kazumitsu Sugiura
Classifying inflammatory skin diseases is challenging, especially for the expanding group of disorders triggered by genetic factors resulting in hyperactivated innate immunity that result in overlapping patterns of dermal and epidermal inflammation with hyperkeratosis. For such conditions, the umbrella term "autoinflammatory keratinization diseases" (AIKD) has been proposed. AIKD encompasses diseases with mixed pathomechanisms of autoinflammation and autoimmunity, and includes IL-36 receptor antagonist (IL-36Ra)-related pustulosis, CARD14-mediated pustular psoriasis, pityriasis rubra pilaris (PRP) type V, and familial keratosis lichenoides chronica (KLC)...
February 1, 2018: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29395325/human-adar1-prevents-endogenous-rna-from-triggering-translational-shutdown
#12
Hachung Chung, Jorg J A Calis, Xianfang Wu, Tony Sun, Yingpu Yu, Stephanie L Sarbanes, Viet Loan Dao Thi, Abigail R Shilvock, H-Heinrich Hoffmann, Brad R Rosenberg, Charles M Rice
Type I interferon (IFN) is produced when host sensors detect foreign nucleic acids, but how sensors differentiate self from nonself nucleic acids, such as double-stranded RNA (dsRNA), is incompletely understood. Mutations in ADAR1, an adenosine-to-inosine editing enzyme of dsRNA, cause Aicardi-Goutières syndrome, an autoinflammatory disorder associated with spontaneous interferon production and neurologic sequelae. We generated ADAR1 knockout human cells to explore ADAR1 substrates and function. ADAR1 primarily edited Alu elements in RNA polymerase II (pol II)-transcribed mRNAs, but not putative pol III-transcribed Alus...
January 12, 2018: Cell
https://www.readbyqxmd.com/read/29366909/hepatocyte-specific-deletion-of-il1-ri-attenuates-liver-injury-by-blocking-il-1-driven-autoinflammation
#13
Nadine Gehrke, Nadine Hövelmeyer, Ari Waisman, Beate K Straub, Julia Weinmann-Menke, Marcus A Wörns, Peter R Galle, Jörn M Schattenberg
BACKGROUND & AIMS: Interleukin (IL)-1-type cytokines including IL-1α, IL-1β and interleukin-1 receptor antagonist (IL-1Ra) are among the most potent molecules of the innate immune system and exert biological activities through the ubiquitously expressed interleukin-1 receptor type 1 (IL-1R1). The role of IL-1R1 in hepatocytes during acute liver failure (ALF) remains undetermined. METHODS: The role of IL-1R1 during ALF was investigated using a novel transgenic mouse model exhibiting deletion of all signaling-capable IL-1R isoforms in hepatocytes (Il1r1Hep-/- )...
May 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29358286/aberrant-trna-processing-causes-an-autoinflammatory-syndrome-responsive-to-tnf-inhibitors
#14
Angeliki Giannelou, Hongying Wang, Qing Zhou, Yong Hwan Park, Mones S Abu-Asab, Kris Ylaya, Deborah L Stone, Anna Sediva, Rola Sleiman, Lucie Sramkova, Deepika Bhatla, Elisavet Serti, Wanxia Li Tsai, Dan Yang, Kevin Bishop, Blake Carrington, Wuhong Pei, Natalie Deuitch, Stephen Brooks, Jehad H Edwan, Sarita Joshi, Seraina Prader, Daniela Kaiser, William C Owen, Abdullah Al Sonbul, Yu Zhang, Julie E Niemela, Shawn M Burgess, Manfred Boehm, Barbara Rehermann, JaeJin Chae, Martha M Quezado, Amanda K Ombrello, Rebecca H Buckley, Alexi A Grom, Elaine F Remmers, Jana M Pachlopnik, Helen C Su, Gustavo Gutierrez-Cruz, Stephen M Hewitt, Raman Sood, Kimberly Risma, Katherine R Calvo, Sergio D Rosenzweig, Massimo Gadina, Markus Hafner, Hong-Wei Sun, Daniel L Kastner, Ivona Aksentijevich
OBJECTIVES: To characterise the clinical features, immune manifestations and molecular mechanisms in a recently described autoinflammatory disease caused by mutations in TRNT1 , a tRNA processing enzyme, and to explore the use of cytokine inhibitors in suppressing the inflammatory phenotype. METHODS: We studied nine patients with biallelic mutations in TRNT1 and the syndrome of congenital sideroblastic anaemia with immunodeficiency, fevers and developmental delay (SIFD)...
April 2018: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29345059/microrna-networks-associated-with-active-systemic-juvenile-idiopathic-arthritis-regulate-cd163-expression-and-anti-inflammatory-functions-in-macrophages-through-two-distinct-mechanisms
#15
Thuy Do, Rachel Tan, Mark Bennett, Mario Medvedovic, Alexei A Grom, Nan Shen, Sherry Thornton, Grant S Schulert
Systemic juvenile idiopathic arthritis (SJIA) is a severe childhood arthropathy with features of autoinflammation. Monocytes and macrophages in SJIA have a complex phenotype with both pro- and anti-inflammatory properties that combine features of several well characterized in vitro conditions used to activate macrophages. An important anti-inflammatory phenotype is expression of CD163, a scavenger receptor that sequesters toxic pro-inflammatory complexes that is highly expressed in both active SJIA and macrophage activation syndrome (MAS)...
January 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29342053/gradual-symmetric-progression-of-dfna34-hearing-loss-caused-by-an-nlrp3-mutation-and-cochlear-autoinflammation
#16
Hiroshi Nakanishi, Yoshiyuki Kawashima, Kiyoto Kurima, Julie A Muskett, H Jeffrey Kim, Carmen C Brewer, Andrew J Griffith
OBJECTIVE: To characterize the audiometric phenotype of autosomal-dominant DFNA34 hearing loss (HL) caused by a missense substitution in the NLRP3 gene. NLRP3 encodes a critical component of the NLRP3 inflammasome that is activated in innate immune responses. STUDY DESIGN: This study was conducted under protocol 01-DC-0229 approved by the NIH Combined Neurosciences IRB. We performed medical and developmental history interviews and physical and audiological examinations of affected individuals with DFNA34 HL caused by the p...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29296929/red-blood-cell-metabolism-in-down-syndrome-hints-on-metabolic-derangements-in-aging
#17
Rachel Culp-Hill, Connie Zheng, Julie A Reisz, Keith Smith, Angela Rachubinski, Travis Nemkov, Eric Butcher, Ross Granrath, Kirk C Hansen, Joaquín M Espinosa, Angelo D'Alessandro
Red blood cells (RBCs) are the most abundant cell in the human body. During their ∼120-day life span in the circulatory system, RBCs release oxygen to all human tissues while being exposed to tissue metabolic activity. Owing to the relative simplicity of their intrinsic metabolism and the abundance of metabolite transporters in RBC membranes, the metabolism of mature erythrocytes indirectly mirrors systemic metabolic homeostasis and its alterations as a function of physiological factors, such as aging. Trisomy 21 (T21), the etiological factor of Down syndrome (DS), has been shown to cause chronic autoinflammation, promoting alterations in RBC life span, size (macrocytosis), and redox homeostasis...
December 26, 2017: Blood Advances
https://www.readbyqxmd.com/read/29282502/autoinflammation-in-rheumatic-and-musculoskeletal-disorders
#18
EDITORIAL
Durga Prasanna Misra
No abstract text is available yet for this article.
January 2018: Rheumatology International
https://www.readbyqxmd.com/read/29260357/mutations-outside-the-n-terminal-part-of-rbck1-may-cause-polyglucosan-body-myopathy-with-immunological-dysfunction-expanding-the-genotype-phenotype-spectrum
#19
Martin Krenn, Elisabeth Salzer, Ingrid Simonitsch-Klupp, Jakob Rath, Matias Wagner, Tobias B Haack, Tim M Strom, Anne Schänzer, Manfred W Kilimann, Ralf L J Schmidt, Klaus G Schmetterer, Alexander Zimprich, Kaan Boztug, Andreas Hahn, Fritz Zimprich
A subset of patients with polyglucosan body myopathy was found to have underlying mutations in the RBCK1 gene. Affected patients may display diverse symptoms ranging from skeletal muscular weakness, cardiomyopathy to chronic autoinflammation and immunodeficiency. It was suggested that the exact localization of the mutation within the gene might be responsible for the specific phenotype, with N-terminal mutations causing severe immunological dysfunction and mutations in the middle or C-terminal part leading to a myopathy phenotype...
February 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29259162/type-i-interferon-mediated-autoinflammation-due-to-dnase-ii-deficiency
#20
Mathieu P Rodero, Alessandra Tesser, Eva Bartok, Gillian I Rice, Erika Della Mina, Marine Depp, Benoit Beitz, Vincent Bondet, Nicolas Cagnard, Darragh Duffy, Michael Dussiot, Marie-Louise Frémond, Marco Gattorno, Flavia Guillem, Naoki Kitabayashi, Fabrice Porcheray, Frederic Rieux-Laucat, Luis Seabra, Carolina Uggenti, Stefano Volpi, Leo A H Zeef, Marie-Alexandra Alyanakian, Jacques Beltrand, Anna Monica Bianco, Nathalie Boddaert, Chantal Brouzes, Sophie Candon, Roberta Caorsi, Marina Charbit, Monique Fabre, Flavio Faletra, Muriel Girard, Annie Harroche, Evelyn Hartmann, Dominique Lasne, Annalisa Marcuzzi, Bénédicte Neven, Patrick Nitschke, Tiffany Pascreau, Serena Pastore, Capucine Picard, Paolo Picco, Elisa Piscianz, Michel Polak, Pierre Quartier, Marion Rabant, Gabriele Stocco, Andrea Taddio, Florence Uettwiller, Erica Valencic, Diego Vozzi, Gunther Hartmann, Winfried Barchet, Olivier Hermine, Brigitte Bader-Meunier, Alberto Tommasini, Yanick J Crow
Microbial nucleic acid recognition serves as the major stimulus to an antiviral response, implying a requirement to limit the misrepresentation of self nucleic acids as non-self and the induction of autoinflammation. By systematic screening using a panel of interferon-stimulated genes we identify two siblings and a singleton variably demonstrating severe neonatal anemia, membranoproliferative glomerulonephritis, liver fibrosis, deforming arthropathy and increased anti-DNA antibodies. In both families we identify biallelic mutations in DNASE2, associated with a loss of DNase II endonuclease activity...
December 19, 2017: Nature Communications
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