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Auto immune diseases

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https://www.readbyqxmd.com/read/29146903/wiskott-aldrich-syndrome-protein-regulates-autophagy-and-inflammasome-activity-in-innate-immune-cells
#1
Pamela P Lee, Damián Lobato-Márquez, Nayani Pramanik, Andrea Sirianni, Vanessa Daza-Cajigal, Elizabeth Rivers, Alessia Cavazza, Gerben Bouma, Dale Moulding, Kjell Hultenby, Lisa S Westerberg, Michael Hollinshead, Yu-Lung Lau, Siobhan O Burns, Serge Mostowy, Mona Bajaj-Elliott, Adrian J Thrasher
Dysregulation of autophagy and inflammasome activity contributes to the development of auto-inflammatory diseases. Emerging evidence highlights the importance of the actin cytoskeleton in modulating inflammatory responses. Here we show that deficiency of Wiskott-Aldrich syndrome protein (WASp), which signals to the actin cytoskeleton, modulates autophagy and inflammasome function. In a model of sterile inflammation utilizing TLR4 ligation followed by ATP or nigericin treatment, inflammasome activation is enhanced in monocytes from WAS patients and in WAS-knockout mouse dendritic cells...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29144817/seasonal-variation-of-vitamin-d-and-serum-thyrotropin-levels-and-its-relationship-in-a-euthyroid-caucasian-population
#2
Gautam Das, Peter N Taylor, Heather Javaid, Brian P Tennant, John Geen, Andrew Aldridge, Onyebuchi Okosieme
OBJECTIVES: It is unclear whether seasonal variations in vitamin D concentrations affect the hypothalamo-pituitary-thyroid (HPT) axis. We investigated the seasonal variability of vitamin D and serum thyrotropin (TSH) levels and their inter-relationship. METHODS: Analysis of 401 patients referred with non-specific symptoms of tiredness who had simultaneous measurements of 25(OH)D3 and thyroid function. Patients were categorised according to the season of blood sampling and their vitamin D status...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29118752/role-of-the-human-breast-milk-associated-microbiota-on-the-newborns-immune-system-a-mini-review
#3
REVIEW
Marco Toscano, Roberta De Grandi, Enzo Grossi, Lorenzo Drago
The human milk is fundamental for a correct development of newborns, as it is a source not only of vitamins and nutrients, but also of commensal bacteria. The microbiota associated to the human breast milk contributes to create the "initial" intestinal microbiota of infants, having also a pivotal role in modulating and influencing the newborns' immune system. Indeed, the transient gut microbiota is responsible for the initial change from an intrauterine Th2 prevailing response to a Th1/Th2 balanced one. Bacteria located in both colostrum and mature milk can stimulate the anti-inflammatory response, by stimulating the production of specific cytokines, reducing the risk of developing a broad range of inflammatory diseases and preventing the expression of immune-mediated pathologies, such as asthma and atopic dermatitis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29108766/new-insight-into-cancer-immunotherapy
#4
REVIEW
M M Escribese, D Barber
A key point for maintenance of the immune system homeostasis is the balance between the capacity to recognize and fight exogenous molecules and the capacity to avoid auto reactivity. The disruption of this balance induces the progression of several immune diseases such as autoimmune diseases, allergies, infections or cancer. A promising therapeutic approach to treat these diseases is immunotherapy. In cancer, both active and passive immunotherapies have been tested with promising results, such as the blocking of immunological checkpoints like CTLA-4 and PD-1...
November 3, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/29105148/biomarkers-related-to-bullous-pemphigoid-activity-and-outcome
#5
REVIEW
Delphine Giusti, Sébastien Le Jan, Gregory Gatouillat, Philippe Bernard, Bach Nga Pham, Frank Antonicelli
Bullous pemphigoid (BP) is the most common autoimmune sub-epidermal blistering disease of the skin. Investigation of the BP-associated pathophysiological processes during the last decades showed that the generation of auto-antibodies directed against the hemidesmosome proteins BP180 and BP230, a hallmark of the BP-associated autoimmune response, leads to the recruitment of inflammatory immune cells at the dermal-epidermal junction, and subsequently to the release of a large amount of inflammatory molecules involved in blister formation...
November 3, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/29096830/serum-of-patients-with-antiphospholipid-syndrome-induces-adhesion-molecules-in-endothelial-cells
#6
Bettina Engel, Gregor Müller, Beate Roch, Hans-Egbert Schröder, Martin Aringer, Stefan R Bornstein, Henning Morawietz
OBJECTIVE: The antiphospholipid syndrome (APS) is a systemic auto-immune disease with an unclear pathophysiology. The aim of our study was to understand the development of APS on a cellular level. Therefore, we analyzed the influence of human serum of APS patients on endothelial expression of specific genes and proteins in comparison to a control group. METHODS: In this study, we analyzed the expression of ICAM-1, VCAM-1, E-selectin and annexin V in primary cultures of human umbilical vein endothelial cells (HUVEC) in response to 10% (v/v) serum of control patients (n = 6), patients with systemic lupus erythematosus (SLE) and no APS (n = 4) or APS patients (n = 9) for 24 h...
November 2017: Atherosclerosis. Supplements
https://www.readbyqxmd.com/read/29091929/the-cathelicidin-protein-cramp-is-a-potential-atherosclerosis-self-antigen-in-apoe-mice
#7
Peter M Mihailovic, Wai Man Lio, Juliana Yano, Xiaoning Zhao, Jianchang Zhou, Kuang-Yuh Chyu, Prediman K Shah, Bojan Cercek, Paul C Dimayuga
Auto-immunity is believed to contribute to inflammation in atherosclerosis. The antimicrobial peptide LL-37, a fragment of the cathelicidin protein precursor hCAP18, was previously identified as an autoantigen in psoriasis. Given the reported link between psoriasis and coronary artery disease, the biological relevance of the autoantigen to atherosclerosis was tested in vitro using a truncated (t) form of the mouse homolog of hCAP18, CRAMP, on splenocytes from athero-prone ApoE(-/-) mice. Stimulation with tCRAMP resulted in increased CD8+ T cells with Central Memory and Effector Memory phenotypes in ApoE(-/-) mice, differentially activated by feeding with normal chow or high fat diet...
2017: PloS One
https://www.readbyqxmd.com/read/29080553/comprehensive-approach-to-study-complement-c4-in-systemic-lupus-erythematosus-gene-polymorphisms-protein-levels-and-functional-activity
#8
M W P Tsang-A-Sjoe, I E M Bultink, L A Korswagen, A van der Horst, I Rensink, M de Boer, D Hamann, A E Voskuyl, D Wouters
Genetic variation of the genes encoding complement component C4 is strongly associated with systemic lupus erythematosus (SLE), a chronic multi-organ auto-immune disease. This study examined C4 and its isotypes on a genetic, protein, and functional level in 140 SLE patients and 104 healthy controls. Gene copy number (GCN) variation, silencing CT-insertion, and the retroviral HERV-K(C4) insertion) were analyzed with multiplex ligation-dependent probe amplification. Increased susceptibility to SLE was found for low GCN (≪2) of C4A...
October 25, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29077480/social-emotional-aspects-of-quality-of-life-in-multiple-sclerosis
#9
Heidemarie Lex, Sara Weisenbach, Jacob Sloane, Sana Syed, Eva Rasky, Wolfgang Freidl
Multiple sclerosis (MS) is an inflammatory auto-immune disease of the central nervous system. It leads to many impairments including physical, cognitive, psychological, and social challenges. Our study examined gender and cultural associations with quality of life (QoL), personal characteristics, and benefits from having MS among those with MS. The study was conducted in Austria and the United States. The sample included 128 participants, 64 in each country, of whom 78 were women and 50 were men aged between 20 and 57 years...
October 27, 2017: Psychology, Health & Medicine
https://www.readbyqxmd.com/read/29055475/neuromyelitis-optica-spectrum-disorder-mimicking-multiple-sclerosis
#10
Lucas C van Rooij, Mike P Wattjes, Brigit A de Jong, Bob W van Oosten
BACKGROUND: MS is a demyelinating CNS disease and has distinct clinical and radiological features. Neuromyelitis optica spectrum disorder (NMOSD) is an antibody related auto-immune disease known for invalidating episodes of myelitis and optic neuritis. OBJECTIVE: Reporting the case of a 29-year old woman with a disease course typical for relapsing remitting MS with consistent radiological and spinal fluid findings, who developed longitudinally extensive transverse myelitis (LETM) with positive aquaporin 4 antibodies, fulfilling the diagnostic criteria for NMOSD...
October 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29054471/innate-immunity-and-tolerance-toward-mitochondria
#11
REVIEW
Anthony Rongvaux
Mitochondria are intracellular organelles that originate from a bacterial symbiont, and they retain multiple features of this bacterial ancestry. The immune system evolved to detect the presence of invading pathogens, including bacteria, to eliminate them by a diversity of antimicrobial mechanisms and to mount long-term protective immunity. Due to their bacterial ancestry, mitochondria are sensed by the innate immune system, and trigger inflammatory responses comparable to those induced by pathogenic bacteria...
October 17, 2017: Mitochondrion
https://www.readbyqxmd.com/read/29051105/nicotine-and-autoimmunity-the-lotus-flower-in-tobacco
#12
REVIEW
João Pedro Gomes, Abdulla Watad, Yehuda Shoenfeld
Nicotine, the major component of cigarettes, has demonstrated conflicting impact on the immune system: some authors suggest that increases pro-inflammatory cytokines and provokes cellular apoptosis of neutrophils, releasing intracellular components that act as auto-antigens; others claimed that nicotine has a protective and anti-inflammatory effects, especially by binding to α7 subunit of nicotinic acetylcholine receptors. The cholinergic pathway contributes to an anti-inflammatory environment characterized by increasing T regulatory cells response, down-regulating of pro-inflammatory cytokines and a pro-inflammatory cells apoptosis...
October 16, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29050651/-movement-disorders-an-update
#13
M Béreau, C Tranchant
Movement disorders (tremor, chorea, dystonia, tics, and myoclonus) are related to basal ganglia and/or interconnected brain areas dysfunction. Clinical examination is a key point in order to characterize the abnormal movement and identify associated signs that can guide etiological approach. Iatrogenic diseases will be systematically ruled out before conducting additional investigations (brain MRI, electrophysiological studies). Wilson disease, but also other treatable metabolic and/or genetic diseases, and auto-immune diseases will be systematically considered...
October 16, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/29045188/rapid-evolution-of-thyroid-dysfunction-in-patients-treated-with-nivolumab
#14
Grenye O'Malley, Hanna J Lee, Samir Parekh, Matthew D Galsky, Cardinale B Smith, Philip Friedlander, Robert T Yanagisawa, Emily J Gallagher
OBJECTIVE: To describe the evolution of thyroid dysfunction in a series of patients with cancer treated with the immune checkpoint inhibitor anti-programmed cell death protein-1 (PD-1) monoclonal antibody, nivolumab. METHODS: Cases of thyroid dysfunction after initiation of checkpoint inhibitor treatment were identified from the Division of Endocrinology clinical practice at Mount Sinai Hospital, New York from April 2016 to February 2017. Charts were reviewed to identify patients treated with nivolumab with new onset of thyroid dysfunction...
October 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29031957/exercise-training-attenuates-experimental-autoimmune-encephalomyelitis-by-peripheral-immunomodulation-rather-than-direct-neuroprotection
#15
Ofira Einstein, Nina Fainstein, Olga Touloumi, Roza Lagoudaki, Ester Hanya, Nikolaos Grigoriadis, Abram Katz, Tamir Ben-Hur
BACKGROUND: Conflicting results exist on the effects of exercise training (ET) on Experimental Autoimmune Encephalomyelitis (EAE), nor is it known how exercise impacts on disease progression. OBJECTIVE: We examined whether ET ameliorates the development of EAE by modulating the systemic immune system or exerting direct neuroprotective effects on the CNS. METHODS: Healthy mice were subjected to 6weeks of motorized treadmill running. The Proteolipid protein (PLP)-induced transfer EAE model in mice was utilized...
October 12, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/29030011/influence-of-pasteurella-multocida-toxin-on-the-differentiation-of-dendritic-cells-into-osteoclasts
#16
Sushmita Chakraborty, Bianca Kloos, Nina Roetz, Silke Schmidt, Tatjana Eigenbrod, Shigeki Kamitani, Katharina F Kubatzky
Dendritic cells (DC) are antigen-presenting cells that connect the innate and adaptive immune system to ensure an efficient immune response during the course of an infection. Recently, DC came into the spotlight as a potential source of osteoclast progenitors, especially under (auto)inflammatory conditions. The virulence factor Pasteurella multocida Toxin (PMT) causes atrophic rhinitis in pigs, a disease characterised by a severe reduction of nasal bone. Our group and others have shown the potential of PMT in mediating differentiation of monocytes/macrophages into bone-resorbing osteoclasts...
September 12, 2017: Immunobiology
https://www.readbyqxmd.com/read/28993766/therapeutic-potential-of-shark-anti-icosl-vnar-domains-is-exemplified-in-a-murine-model-of-autoimmune-non-infectious-uveitis
#17
Marina Kovaleva, Katherine Johnson, John Steven, Caroline J Barelle, Andrew Porter
Induced costimulatory ligand (ICOSL) plays an important role in the activation of T cells through its interaction with the inducible costimulator, ICOS. Suppression of full T cell activation can be achieved by blocking this interaction and has been shown to be an effective means of ameliorating disease in models of autoimmunity and inflammation. In this study, we demonstrated the ability of a novel class of anti-ICOSL antigen-binding single domains derived from sharks (VNARs) to effectively reduce inflammation in a murine model of non-infectious uveitis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28990564/-mirnas-new-actors-in-the-physiopathology-of-multiple-sclerosis
#18
Ferdinand Jagot, Nathalie Davoust
Multiple sclerosis (MS) is an auto-immune demyelinating disorder characterized by a chronic neuro-inflammatory process associated with an infiltration of the central nervous system (CNS) by autoreactive lymphocytes. The etiology of the disease remains unclear but the recent discovery of a dysregulated miRNA network in both cells and extracellular fluids of MS patients has brought new insights on the pathophysiological mechanisms involved in this disorder. miRNAs can induce a T cell polarization towards a pathological Th17 or Th1 phenotype and a deleterious activation of microglia, the CNS-resident macrophages...
June 2017: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28979622/-vitiligo-revealing-vogt-koyanagi-harada-disease
#19
Mohamed El Amraoui, Youssef Zemmez, Ahmed Bouhamidi, Rachid Frikh, Naoufal Hjira, Mohammed Boui
Vitiligo is a chronic auto-immune skin disease, often associated or discovers other autoimmune pathologies. His association with Ophthalmological type pan uveitis and/or neurological type of meningitis and/or inner ear type of hearing loss determines the disease or Vogt -Koyanagi-Harada syndrome (VKH). We related the case of a young woman who consulted for recurrent uveitis for a year, and it was only with the onset of vitiligo lesions that VKH disease diagnosis was discussed and confirmed.
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28978473/generation-of-ror%C3%AE-t-antigen-specific-t-regulatory-17-cells-from-foxp3-precursors-in-autoimmunity
#20
Byung-Seok Kim, Huiping Lu, Kenji Ichiyama, Xiang Chen, Yi-Bing Zhang, Nipun A Mistry, Kentaro Tanaka, Young-Hee Lee, Roza Nurieva, Li Zhang, Xuexian Yang, Yeonseok Chung, Wei Jin, Seon Hee Chang, Chen Dong
Th17 cells are potent mediators in autoimmune diseases, and RORγt is required for their development. Recent studies have shown that RORγt(+) Treg cells in the gut regulate intestinal inflammation by inhibiting effector T cell function. In the current study, we report that RORγt(+) Treg cells were also found in lymph nodes following immunization. Not only distinct from intestinal RORγt(+) Treg cells in their transcriptomes, peripheral RORγt(+) Treg cells were derived from Foxp3(+) thymic Treg cells in an antigen-specific manner...
October 3, 2017: Cell Reports
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