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macrophagic activation syndrome

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https://www.readbyqxmd.com/read/29666944/macrophages-play-an-essential-role-in-trauma-induced-sterile-inflammation-and-tissue-repair
#1
REVIEW
Moritz Peiseler, Paul Kubes
Severe trauma is accompanied by a profound activation of the immune system. Patients with polytrauma develop systemic inflammatory response syndrome (SIRS) and often sepsis, which contributes substantially to high mortality of this condition. On a cellular level, necrosis and loss of plasma membrane integrity lead to the release of endogenous "damage-associated molecular patterns" (DAMPs) as danger signals, which in turn activate innate immune cells. Inflammation that occurs in the absence of invading pathogens has been termed sterile inflammation and trauma with tissue damage represents an acute form of sterile inflammation...
April 17, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29663892/complement-components-c3-and-c4-and-the-metabolic-syndrome
#2
Melanie Copenhaver, Chack-Yung Yu, Robert P Hoffman
INTRODUCTION: Increased systemic inflammation is engaged likely plays a significant role in the development of adult cardiometabolic diseases such as insulin resistance, dyslipidemia, atherosclerosis, and hypertension. The complement system is part of the innate immune system and plays a key role in in regulation inflammation. Of particular importance is the activation of complement components C3 and C4. C3 is produced primarily by the liver but is also produced in adipocytes, macrophages and endothelial cells, all of which are present in adipose tissue...
April 17, 2018: Current Diabetes Reviews
https://www.readbyqxmd.com/read/29663156/anakinra-treatment-in-macrophage-activation-syndrome-a-single-center-experience-and-systemic-review-of-literature
#3
Hafize Emine Sönmez, Selcan Demir, Yelda Bilginer, Seza Özen
Our aim was to report our experiences of pediatric macrophage activation syndrome (MAS) patients treated with anakinra and to review previous studies reporting anakinra treatment in pediatric MAS patients associated with systemic juvenile idiopathic arthritis (sJIA) or autoinflammatory diseases (AIDs). The study group consisted of pediatric MAS patients due to sJIA or AIDs, followed up in the Pediatric Rheumatology Unit of Hacettepe University between January 2015 and January 2017 and treated with anakinra (anti-IL1)...
April 16, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29659729/t-helper-17-1-cells-associate-with-multiple-sclerosis-disease-activity-perspectives-for-early-intervention
#4
Jamie van Langelaar, Roos M van der Vuurst de Vries, Malou Janssen, Annet F Wierenga-Wolf, Isis M Spilt, Theodora A Siepman, Wendy Dankers, Georges M G M Verjans, Helga E de Vries, Erik Lubberts, Rogier Q Hintzen, Marvin M van Luijn
Interleukin-17-expressing CD4+ T helper 17 (Th17) cells are considered as critical regulators of multiple sclerosis disease activity. However, depending on the species and pro-inflammatory milieu, Th17 cells are functionally heterogeneous, consisting of subpopulations that differentially produce interleukin-17, interferon-gamma and granulocyte macrophage colony-stimulating factor. In the current study, we studied distinct effector phenotypes of human Th17 cells and their correlation with disease activity in multiple sclerosis patients...
April 5, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29657144/macrophage-activation-syndrome-in-patients-affected-by-adult-onset-still-disease-analysis-of-survival-rates-and-predictive-factors-in-the-gruppo-italiano-di-ricerca-in-reumatologia-clinica-e-sperimentale-cohort
#5
Piero Ruscitti, Daniela Iacono, Francesco Ciccia, Giacomo Emmi, Paola Cipriani, Rosa Daniela Grembiale, Federico Perosa, Lorenzo Emmi, Giovanni Triolo, Roberto Giacomelli, Gabriele Valentini
OBJECTIVE: Macrophage activation syndrome (MAS) is a reactive form of hemophagocytic lymphohistiocytosis, which can complicate adult-onset Still disease (AOSD). We investigated AOSD clinical features at the time of diagnosis, to assess predictors of MAS occurrence. Further, we analyzed the outcomes of patients with AOSD who experience MAS. METHODS: Patients with AOSD admitted to any Gruppo Italiano di Ricerca in Reumatologia Clinica e Sperimentale center were retrospectively analyzed for features typical of AOSD, MAS occurrence, and their survival rate...
April 15, 2018: Journal of Rheumatology
https://www.readbyqxmd.com/read/29649066/macrophage-polarization-favors-epithelial-repair-during-acute-respiratory-distress-syndrome
#6
Marc Garnier, Aude Gibelin, Arnaud A Mailleux, Véronique Leçon, Margarita Hurtado-Nedelec, Jamila Laschet, Grégoire Trebbia, Mathilde Neuville, Sébastien Tanaka, Bruno Crestani, Monique Dehoux, Christophe Quesnel
OBJECTIVES: Alveolar macrophage polarization and role on alveolar repair during human acute respiratory distress syndrome remain unclear. This study aimed to determine during human acute respiratory distress syndrome: the alveolar macrophage polarization, the effect of alveolar environment on macrophage polarization, and the role of polarized macrophages on epithelial repair. DESIGN: Experimental ex vivo and in vitro investigations. SETTING: Four ICUs in three teaching hospitals...
April 11, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29627532/effector-memory-cd8-t-cells-synergize-with-co-stimulation-competent-macrophages-to-trigger-autoimmune-peripheral-neuropathy
#7
Mu Yang, Xiang Qun Shi, Corentin Peyret, Oladayo Oladiran, Sonia Wu, Julien Chambon, Sylvie Fournier, Ji Zhang
Autoimmune peripheral neuropathy (APN) such as Guillain Barre Syndrome (GBS) is a debilitating illness and sometimes life threatening. The molecular and cellular mechanisms remain elusive but exposure to environmental factors including viral/bacterial infection and injury is highly associated with disease incidence. We demonstrated previously that both male and female B7.2 (CD86) transgenic L31 and L31/CD4KO mice develop spontaneous APN. Here we further reveal that CD8+ T cells in these mice exhibit an effector/memory phenotype, which bears a resemblance to CD8+ T cell response following persistent cytomegalovirus (CMV) infection in humans and mice, whilst CMV has been considered as one of the most relevant pathogens in APN development...
April 5, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29622563/noncanonical-matrix-metalloprotease-1-protease-activated-receptor-1-signaling-drives-progression-of-atherosclerosis
#8
Rajashree Rana, Tianfang Huang, Georgios Koukos, Elizabeth K Fletcher, Susan E Turner, Andrew Shearer, Paul A Gurbel, Jeffrey J Rade, Carey D Kimmelstiel, Kevin P Bliden, Lidija Covic, Athan Kuliopulos
OBJECTIVE: Protease-activated receptor-1 (PAR1) is classically activated by thrombin and is critical in controlling the balance of hemostasis and thrombosis. More recently, it has been shown that noncanonical activation of PAR1 by matrix metalloprotease-1 (MMP1) contributes to arterial thrombosis. However, the role of PAR1 in long-term development of atherosclerosis is unknown, regardless of the protease agonist. APPROACH AND RESULTS: We found that plasma MMP1 was significantly correlated ( R =0...
April 5, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29618647/identification-of-the-rna-pseudoknot-within-the-3-end-of-prrsv-genome-as-pathogen-associated-molecular-pattern-to-activate-antiviral-signaling-via-rig-i-and-tlr3
#9
Sha Xie, Xin-Xin Chen, Songlin Qiao, Rui Li, Yangang Sun, Shuangfei Xia, Lin-Jian Wang, Xuegang Luo, Ruiguang Deng, En-Min Zhou, Gai-Ping Zhang
Once infected by viruses, cells can detect pathogen associated molecular patterns (PAMPs) on viral nucleic acid by host pattern recognition receptors (PRRs) to initiate the antiviral response. Porcine reproductive and respiratory syndrome virus (PRRSV) is the causative agent of porcine reproductive and respiratory syndrome (PRRS), characterized by reproductive failure in sows and respiratory diseases in pigs of different ages. To date, the sensing mechanism of PRRSV has not been elucidated. Here, we reported that the pseudoknot region residing in the 3' untranslated regions (UTR) of PRRSV genome, which has been proposed to regulate RNA synthesis and virus replication, was sensed as non-self by retinoic acid-inducible gene I (RIG-I) and Toll like receptor (TLR3) and strongly induced type I IFNs and interferon-stimulated genes (ISGs) in porcine alveolar macrophages (PAMs)...
April 4, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29618462/allogeneic-hematopoietic-stem-cell-transplantation-for-severe-refractory-juvenile-idiopathic-arthritis
#10
Juliana M F Silva, Fani Ladomenou, Ben Carpenter, Sharat Chandra, Petr Sedlacek, Renata Formankova, Vicky Grandage, Mark Friswell, Andrew J Cant, Zohreh Nademi, Mary A Slatter, Andrew R Gennery, Sophie Hambleton, Terence J Flood, Giovanna Lucchini, Robert Chiesa, Kanchan Rao, Persis J Amrolia, Paul Brogan, Lucy R Wedderburn, Julie M Glanville, Rachael Hough, Rebecca Marsh, Mario Abinun, Paul Veys
Patients with juvenile idiopathic arthritis (JIA) can experience a severe disease course, with progressive destructive polyarthritis refractory to conventional therapy with disease-modifying antirheumatic drugs including biologics, as well as life-threatening complications including macrophage activation syndrome (MAS). Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a potentially curative immunomodulatory strategy for patients with such refractory disease. We treated 16 patients in 5 transplant centers between 2007 and 2016: 11 children with systemic JIA and 5 with rheumatoid factor-negative polyarticular JIA; all were either refractory to standard therapy, had developed secondary hemophagocytic lymphohistiocytosis/MAS poorly responsive to treatment, or had failed autologous HSCT...
April 10, 2018: Blood Advances
https://www.readbyqxmd.com/read/29610582/the-samhd1-mediated-block-of-line-1-retroelements-is-regulated-by-phosphorylation
#11
Alexandra Herrmann, Sabine Wittmann, Dominique Thomas, Caitlin N Shepard, Baek Kim, Nerea Ferreirós, Thomas Gramberg
Background: The restriction factor SAMHD1 regulates intracellular nucleotide level by degrading dNTPs and blocks the replication of retroviruses and DNA viruses in non-cycling cells, like macrophages or dendritic cells. In patients, inactivating mutations in samhd1 are associated with the autoimmune disease Aicardi-Goutières Syndrome (AGS). The accumulation of intracellular nucleic acids derived from endogenous retroelements thriving in the absence of SAMHD1 has been discussed as potential trigger of the autoimmune reaction...
2018: Mobile DNA
https://www.readbyqxmd.com/read/29600283/zika-virus-infection-preferentially-counterbalances-human-peripheral-monocyte-and-or-nk-cell-activity
#12
Fok-Moon Lum, David Lee, Tze-Kwang Chua, Jeslin J L Tan, Cheryl Y P Lee, Xuan Liu, Yongxiang Fang, Bernett Lee, Wearn-Xin Yee, Natasha Y Rickett, Po-Ying Chia, Vanessa Lim, Yee-Sin Leo, David A Matthews, Julian A Hiscox, Lisa F P Ng
Zika virus (ZIKV) has reemerged in the population and caused unprecedented global outbreaks. Here, the transcriptomic consequences of ZIKV infection were studied systematically first in human peripheral blood CD14+ monocytes and monocyte-derived macrophages with high-density RNA sequencing. Analyses of the ZIKV genome revealed that the virus underwent genetic diversification, and differential mRNA abundance was found in host cells during infection. Notably, there was a significant change in the cellular response, with cross talk between monocytes and natural killer (NK) cells as one of the highly identified pathways...
March 2018: MSphere
https://www.readbyqxmd.com/read/29590229/association-of-oxytocin-with-glucose-intolerance-and-inflammation-biomarkers-in-metabolic-syndrome-patients-with-and-without-prediabetes
#13
Amal Akour, Violet Kasabri, Nailya Bulatova, Suha Al Muhaissen, Randa Naffa, Hiba Fahmawi, Munther Momani, Ayman Zayed, Yasser Bustanji
OBJECTIVES: The aim of this study was to explore the differences in OXT levels in metabolic syndrome (MetS) subjects, newly diagnosed type 2 diabetes mellitus (T2D), and prediabetes subjects vs. MetS subjects without glucose intolerance (non-diabetic MetS). It was also intended to determine the relationship between plasma OXT levels and inflammatory markers in those subjects. METHODS: Along with 45 lean and normoglycemic controls, a total of 190 MetS subjects (61 men, 129 women) were enrolled...
2018: Review of Diabetic Studies: RDS
https://www.readbyqxmd.com/read/29581238/role-of-dysfunctional-adipocytes-in-cholesterol-induced-nonobese-metabolic-syndrome
#14
Jiung-Pang Huang, Sheng-Chieh Hsu, Yaa-Jyuhn James Meir, Po-Shiuan Hsieh, Chih-Chun Chang, Kuan-Hsing Chen, Jan-Kan Chen, Li-Man Hung
Many studies have reported the causes of obese metabolic syndrome (MS); however, the causes of nonobese MS (NMS) remain unknown. In this study, we demonstrated that inflamed dysfunctional adipose tissue plays a crucial role in cholesterol-induced NMS. Control (C), high cholesterol (HC), and HC with 10% fructose in drinking water (HCF) diets were fed to Sprague-Dawley rats for 12 weeks. After 12 weeks, the body weights of the C- and HC-fed rats were comparable, but the weights of the HCF-fed rats were relatively low...
March 26, 2018: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/29581121/dextromethorphan-attenuates-nadph-oxidase-regulated-gsk-3%C3%AE-and-nf-%C3%AE%C2%BAb-activation-and-reduces-nitric-oxide-production-in-group-a-streptococcal-infection
#15
Chia-Ling Chen, Miao-Huei Cheng, Chih-Feng Kuo, Yi-Lin Cheng, Ming-Han Li, Chih-Peng Chang, Jiunn-Jong Wu, Robert Anderson, Shuying Wang, Pei-Jane Tsai, Ching-Chuan Liu, Yee-Shin Lin
Group A streptococcus (GAS) is an important human pathogen that causes a wide spectrum of diseases, including necrotizing fasciitis and streptococcal toxic shock syndrome. Dextromethorphan (DM), an antitussive drug, has been demonstrated to efficiently reduce inflammatory responses thereby contributing to an increased survival rate of GAS-infected mice. However, the anti-inflammatory mechanisms underlying DM treatment in GAS infection remain unclear. DM is known to exert neuroprotective effects through a NADPH oxidase-dependent regulated process...
March 26, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29569854/il-25-axis-is-involved-in-the-pathogenesis-of-human-primary-and-experimental-sj%C3%A3-gren-s-syndrome
#16
Giuliana Guggino, Xiang Lin, Aroldo Rizzo, Fan Xiao, Laura Saieva, Stefania Raimondo, Diana Di Liberto, Giuseppina Candore, Piero Ruscitti, Paola Cipriani, Roberto Giacomelli, Francesco Dieli, Riccardo Alessandro, Giovanni Triolo, Liwei Lu, Francesco Ciccia
OBJECTIVE: To investigate the role of IL-25/IL-17RB axis in experimental Sjögren's syndrome (ESS) and in patients with primary Sjögren Syndrome (pSS) and pSS-associated lymphoma. METHODS: Expression of IL-25, IL-17RB, IL-17B and TRAF6 was analyzed on minor salivary glands (MSG) from pSS patients and on parotid glands from pSS-associated B cell non-Hodgkin lymphomas (NHL). IL-17RB expression and the frequencies of natural type 2 innate lymphoid cells (nILC2), inflammatory ILC2 (iILC2) and M2-polarized macrophages were assessed by flow cytometry in salivary gland mononuclear cells (SGMC) and peripheral blood mononuclear cells (PBMC)...
March 23, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29566060/mers-cov-pathogenesis-and-antiviral-efficacy-of-licensed-drugs-in-human-monocyte-derived-antigen-presenting-cells
#17
Yu Cong, Brit J Hart, Robin Gross, Huanying Zhou, Matthew Frieman, Laura Bollinger, Jiro Wada, Lisa E Hensley, Peter B Jahrling, Julie Dyall, Michael R Holbrook
Middle East respiratory syndrome coronavirus (MERS-CoV) presents an emerging threat to public health worldwide by causing severe respiratory disease in humans with high virulence and case fatality rate (about 35%) since 2012. Little is known about the pathogenesis and innate antiviral response in primary human monocyte-derived macrophages (MDMs) and dendritic cells (MDDCs) upon MERS-CoV infection. In this study, we assessed MERS-CoV replication as well as induction of inflammatory cytokines and chemokines in MDMs and immature and mature MDDCs...
2018: PloS One
https://www.readbyqxmd.com/read/29552369/efficacy-of-cyclosporine-in-the-induction-and-maintenance-of-remission-in-a-systemic-lupus-erythematosus-patient-presenting-with-macrophage-activating-syndrome
#18
Franchesca Cruz-Pérez, Salvador Vilá, Grissel Ríos, Luis M Vilá
Macrophage-activating syndrome (MAS) is a rare condition characterized by dysfunctional macrophage activation leading to overproduction of cytokines and phagocytosis of erythrocytes, leukocytes, and platelets. MAS is associated with infectious diseases, malignancies, and autoimmune rheumatic disorders. Herein, we present a 22-year-old Hispanic woman with SLE who was hospitalized because of a three-week history of fever, fatigue, polyarthralgia, nausea, and abdominal pain. Initial laboratories showed severe pancytopenia with marked elevation of liver enzymes and ferritin levels...
2018: Case Reports in Rheumatology
https://www.readbyqxmd.com/read/29551638/an-oxidation-resistant-recombinant-alpha-1-antitrypsin-produced-in-nicotiana-benthamiana
#19
David Z Silberstein, Kalimuthu Karuppanan, Hnin Hnin Aung, Ching-Hsien Chen, Carroll E Cross, Karen A McDonald
Proteases and reactive oxygen species (ROS) have long been implicated in playing key roles in host tissue injury at sites of inflammatory processes dominated by macrophage activations and/or neutrophil infiltrations. Imbalances between proteases/antiproteases and ROS/antioxidants are recognized to contribute to amplification of inflammatory-based host tissue injury. This has been especially well-documented in such respiratory tract diseases as chronic obstructive pulmonary disease, cystic fibrosis, and acute respiratory distress syndrome...
March 15, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29551295/systemic-activation-of-nlrp3-inflammasome-in-patients-with-severe-primary-sj%C3%A3-gren-s-syndrome-fueled-by-inflammagenic-dna-accumulations
#20
Aigli G Vakrakou, Sorina Boiu, Panayiotis D Ziakas, Evangelia Xingi, Haralabia Boleti, Menelaos N Manoussakis
Sjögren's syndrome (SS) patients manifest high cell-free DNA (cf-DNA) levels in serum, associated with impaired DNaseI activity. Undegraded DNA may accumulate in tissues and act as an inflammasome-activating signal. Herein, we investigated the occurrence of aberrant DNA build-up in various biologic compartments of SS patients and its correlation with the activity of NLRP3 and AIM2 inflammasomes. For this purpose, we evaluated sera, PBMC, circulating monocytes and salivary glands (SG) from different SS patient subgroups and controls...
March 15, 2018: Journal of Autoimmunity
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