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macrophagic activation syndrome

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https://www.readbyqxmd.com/read/28646367/ifn%C3%AE-producing-cd4-t-lymphocytes-the-double-edged-swords-in-tuberculosis
#1
Pawan Kumar
IFNγ-producing CD4(+) T cells (IFNγ(+)CD4(+) T cells) are the key orchestrators of protective immunity against Mycobacterium tuberculosis (Mtb). Primarily, these cells act by enabling Mtb-infected macrophages to enforce phagosome-lysosome fusion, produce reactive nitrogen intermediates (RNIs), and activate autophagy pathways. However, TB is a heterogeneous disease and a host of clinical and experimental findings has also implicated IFNγ(+)CD4(+) T cells in TB pathogenesis. High frequency of IFNγ(+)CD4(+) T cells is the most invariable feature of the active disease...
December 2017: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/28642034/cyclooxygenase-2-promotes-pulmonary-intravascular-macrophage-accumulation-by-exacerbating-bmp-signaling-in-rat-experimental-hepatopulmonary-syndrome
#2
Chang Liu, Jing Gao, Bing Chen, Lin Chen, Karine Belguise, Weifeng Yu, Kaizhi Lu, Xiaobo Wang, Bin Yi
BACKGROUND AND AIMS: One central factor in hepatopulmonary syndrome (HPS) pathogenesis is intravascular accumulation of activated macrophages in small pulmonary arteries. However, molecular mechanism underlyingthe macrophage accumulation in HPS is unknown. In this study, we aimed to explore whether elevated COX-2 induces the Bone morphogenicprotein-2 (BMP-2)/Crossveinless-2(CV-2) imbalance and then activation of BMP signaling pathway promotes the macrophage accumulation in Common Bile Duct Ligation (CBDL) rat lung...
June 19, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28641779/macrophage-functions-in-lean-and-obese-adipose-tissue
#3
REVIEW
Dylan Thomas, Caroline Apovian
Interactions between macrophages and adipocytes influence both metabolism and inflammation. Obesity-induced changes to macrophages and adipocytes lead to chronic inflammation and insulin resistance. This paper reviews the various functions of macrophages in lean and obese adipose tissue and how obesity alters adipose tissue macrophage phenotypes. Metabolic disease and insulin resistance shift the balance between numerous pro- and anti-inflammatory regulators of macrophages and create a feed-forward loop of increasing inflammatory macrophage activation and worsening adipocyte dysfunction...
July 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28630236/european-evidence-based-recommendations-for-diagnosis-and-treatment-of-childhood-onset-systemic-lupus-erythematosus-the-share-initiative
#4
Noortje Groot, Nienke de Graeff, Tadej Avcin, Brigitte Bader-Meunier, Paul Brogan, Pavla Dolezalova, Brian Feldman, Isabelle Kone-Paut, Pekka Lahdenne, Stephen D Marks, Liza McCann, Seza Ozen, Clarissa Pilkington, Angelo Ravelli, Annet van Royen-Kerkhof, Yosef Uziel, Bas Vastert, Nico Wulffraat, Sylvia Kamphuis, Michael W Beresford
Childhood-onset systemic lupus erythematosus (cSLE) is a rare, multisystem and potentially life-threatening autoimmune disorder with significant associated morbidity. Evidence-based guidelines are sparse and management is often based on clinical expertise. SHARE (Single Hub and Access point for paediatric Rheumatology in Europe) was launched to optimise and disseminate management regimens for children and young adults with rheumatic diseases like cSLE. Here, we provide evidence-based recommendations for diagnosis and treatment of cSLE...
June 19, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28629255/hemophagocytic-lymphohistiocytosis-associated-to-haemophilus-parainfluenzae-endocarditis-a-case-report
#5
D I Costescu Strachinaru, M Chaumont, D Gobin, L Sattar, M Strachinaru, E Karakike, A Roman, D Konopnicki
BACKGROUND: Hemophagocytic lymphohistiocytosis (HLH) is a rare but severe and potentially fatal syndrome that is characterized by increased proliferation and activation of benign macrophages with hemophagocytosis throughout the reticuloendothelial system. This syndrome is classified as primary (genetic) or secondary when acquired in the context of infections (usually viral), malignancies, rheumatologic and metabolic diseases. CASE SUMMARY: We report a case of HLH complicating a Haemophilus parainfluenzae mitral valve endocarditis and resolving under antibiotic and surgical treatment alone...
June 19, 2017: Acta Clinica Belgica
https://www.readbyqxmd.com/read/28614216/refractory-adult-onset-still-disease-complicated-by-macrophage-activation-syndrome-and-acute-myocarditis-a-case-report-treated-with-high-doses-8%C3%A2-mg-kg-d-of-anakinra
#6
Federico Parisi, Annamaria Paglionico, Valentina Varriano, Gianfranco Ferraccioli, Elisa Gremese
RATIONALE: Myocarditis is a rare but potentially fatal complication of Still's disease (about 7% of total cases). PATIENT CONCERNS: A 42-year-old woman was admitted to our ward with high-grade fever, rash and polyarthralgia, lasting since 4 weeks and rapidly complicated by MAS and acute heart failure. DIAGNOSES: Adult Onset Still's Disease rapidly developping macrophage activation syndrome and disseminated intravascular coagulopathy, further complicated by iperacute myocarditis with cardiac arrest...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28613152/reduction-of-infection-by-inhibiting-mtor-pathway-is-associated-with-reversed-repression-of-type-i-interferon-by-porcine-reproductive-and-respiratory-syndrome-virus
#7
Qinfang Liu, Laura C Miller, Frank Blecha, Yongming Sang
Type I interferons (IFNs) are critical in animal antiviral regulation. IFN-mediated signalling regulates hundreds of genes that are directly associated with antiviral, immune and other physiological responses. The signalling pathway mediated by mechanistic target of rapamycin (mTOR), a serine/threonine kinase regulated by IFNs, is key in regulation of cellular metabolism and was recently implicated in host antiviral responses. However, little is known about how animal type I IFN signalling coordinates immunometabolic reactions during antiviral defence...
June 14, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28608285/the-glp-1-analogue-lixisenatide-decreases-atherosclerosis-in-insulin-resistant-mice-by-modulating-macrophage-phenotype
#8
Ángela Vinué, Jorge Navarro, Andrea Herrero-Cervera, Marta García-Cubas, Irene Andrés-Blasco, Sergio Martínez-Hervás, José T Real, Juan F Ascaso, Herminia González-Navarro
AIMS/HYPOTHESIS: Recent clinical studies indicate that glucagon-like peptide-1 (GLP-1) analogues prevent acute cardiovascular events in type 2 diabetes mellitus but their mechanisms remain unknown. In the present study, the impact of GLP-1 analogues and their potential underlying molecular mechanisms in insulin resistance and atherosclerosis are investigated. METHODS: Atherosclerosis development was evaluated in Apoe (-/-) Irs2 (+/-) mice, a mouse model of insulin resistance, the metabolic syndrome and atherosclerosis, treated with the GLP-1 analogues lixisenatide or liraglutide...
June 12, 2017: Diabetologia
https://www.readbyqxmd.com/read/28607110/the-bile-acid-receptor-gpbar1-regulates-the-m1-m2-phenotype-of-intestinal-macrophages-and-activation-of-gpbar1-rescues-mice-from-murine-colitis
#9
Michele Biagioli, Adriana Carino, Sabrina Cipriani, Daniela Francisci, Silvia Marchianò, Paolo Scarpelli, Daniele Sorcini, Angela Zampella, Stefano Fiorucci
GPBAR1 (TGR5 or M-BAR) is a G protein-coupled receptor for secondary bile acids that is highly expressed in monocytes/macrophages. In this study, we aimed to determine the role of GPBAR1 in mediating leukocyte trafficking in chemically induced models of colitis and investigate the therapeutic potential of BAR501, a small molecule agonist for GPBAR1. These studies demonstrated that GPBAR1 gene ablation enhanced the recruitment of classically activated macrophages in the colonic lamina propria and worsened the severity of inflammation...
June 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28598057/macrophage-activation-syndrome
#10
P Babu Raj, B L Harikrishnan, Roshan Mampilly, R Anand
Macrophage Activation Syndrome (MAS) occurs as a severe life-threatening complication of several chronic rheumatic diseases. It is more frequent with systemic onset juvenile arthritis and adult onset Still's disease.1 It can be primary, infection related, malignancy associated or autoimmune3. We report a case of Macrophage Activation Syndrome presenting as pyrexia of unknown origin (PUO) and pancytopenia in the absence of any known triggering factor.
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28594137/increased-adipocyte-size-macrophage-infiltration-and-adverse-local-adipokine-profile-in-perirenal-fat-in-cushing-s-syndrome
#11
Sean H P P Roerink, Margreet A E M Wagenmakers, Johan F Langenhuijsen, Dov B Ballak, Hanne M M Rooijackers, Frank C d'Ancona, François M van Dielen, Jan W A Smit, Theo S Plantinga, Romana T Netea-Maier, Ad R M M Hermus
OBJECTIVE: To analyze changes in fat cell size, macrophage infiltration, and local adipose tissue adipokine profiles in different fat depots in patients with active Cushing's syndrome. METHODS: Subcutaneous (SC) and perirenal (PR) adipose tissue of 10 patients with Cushing's syndrome was compared to adipose tissue of 10 gender-, age-, and BMI-matched controls with regard to adipocyte size determined by digital image analysis on hematoxylin and eosin stainings, macrophage infiltration determined by digital image analysis on CD68 stainings, and adipose tissue leptin and adiponectin levels using fluorescent bead immunoassays and ELISA techniques...
June 8, 2017: Obesity
https://www.readbyqxmd.com/read/28592489/sustained-notch2-signaling-in-osteoblasts-but-no-in-osteoclasts-is-linked-to-osteopenia-in-a-mouse-model-of-hajdu-cheney-syndrome
#12
Stefano Zanotti, Jungeun Yu, Archana Sanjay, Lauren Schilling, Chris Schoenherr, Aris N Economides, Ernesto Canalis
Individuals with Hajdu-Cheney syndrome (HCS) present with osteoporosis, and HCS is associated with NOTCH2 mutations causing deletions of the proline-, glutamic acid-, serine-, and threonine-rich (PEST) domain that are predicted to enhance NOTCH2 stability and cause gain-of-function. Previously, we demonstrated that mice harboring Notch2 mutations analogous to those in HCS (Notch2HCS) are severely osteopenic because of enhanced bone resorption. We attributed this phenotype to osteoclastic sensitization to receptor activator of nuclear factor-κB ligand and increased osteoblastic tumor necrosis factor superfamily member 11 (Tnfsf11) expression...
June 7, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28589388/-efficacy-and-safety-analysis-of-off-label-treatment-with-biologics-in-autoinflammatory-diseases-experiences-from-a%C3%A2-german-registry%C3%A2-graid2
#13
F Proft, M Fleck, C Fiehn, H Schulze-Koops, M Witt, T Dörner, J C Henes
OBJECTIVE: To evaluate the safety and efficacy of therapy with biologics in patients with autoinflammatory diseases (AIF) or macrophage activating syndrome (MAS) in a real-life setting in Germany. METHODS: The German Register of Autoimmune Diseases 2 (GRAID2) is a retrospective, non-interventional, multicenter registry collecting data from all patients with inflammatory rheumatic diseases refractory to conventional therapy and treated with initial off-label biologics between August 2006 and December 2013...
June 6, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28588173/macrophage-activation-syndrome-in-paediatric-rheumatic-diseases
#14
M I Islam, M K Talukder, M M Islam, K Laila, S A Rahman
Macrophage activation syndrome (MAS) is a potentially fatal complication of rheumatic disorders, which commonly occurs in systemic juvenile idiopathic arthritis (sJIA).This study was carried out with the aims of describing the clinical features, laboratory findings and outcomes of MAS associated with paediatric rheumatic diseases in the Department of Paediatrics, Bangabandhu Sheikh Mujib Medical University (BSMMU) and compare these results with previous studies on MAS. This retrospective study was conducted in the paediatric rheumatology wing of the Department of Paediatrics, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh...
April 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28587749/pluripotent-stem-cell-models-of-blau-syndrome-reveal-an-ifn-%C3%AE-dependent-inflammatory-response-in-macrophages
#15
Sanami Takada, Naotomo Kambe, Yuri Kawasaki, Akira Niwa, Fumiko Honda-Ozaki, Kazuki Kobayashi, Mitsujiro Osawa, Ayako Nagahashi, Katsunori Semi, Akitsu Hotta, Isao Asaka, Yasuhiro Yamada, Ryuta Nishikomori, Toshio Heike, Hiroyuki Matsue, Tatsutoshi Nakahata, Megumu K Saito
BACKGROUND: Blau syndrome, or early-onset sarcoidosis, is a juvenile-onset systemic granulomatosis associated with a mutation in nucleotide-binding oligomerization domain 2 (NOD2). The underlying mechanisms of Blau syndrome leading to autoinflammation are still unclear, and there is currently no effective specific treatment for Blau syndrome. OBJECTIVES: To elucidate the mechanisms of autoinflammation in patients with Blau syndrome, we sought to clarify the relation between disease-associated mutant NOD2 and the inflammatory response in human samples...
June 3, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28585210/adiponectin-resistance-in-obesity
#16
Atilla Engin
The decrease in adiponectin levels are negatively correlated with chronic subclinical inflammation markers in obesity. The hypertrophic adipocytes cause obesity-linked insulin resistance and metabolic syndrome. Furthermore, macrophage polarization is a key determinant regulating adiponectin receptor (AdipoR1/R2) expression and differential adiponectin-mediated macrophage inflammatory responses in obese individuals. In addition to decrease in adiponectin concentrations, the decline in AdipoR1/R2 mRNA expression leads to a decrement in adiponectin binding to cell membrane, and this turns into attenuation in the adiponectin effects...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28584972/relation-between-thoracic-aortic-inflammation-and-features-of-plaque-vulnerability-in-the-coronary-tree-in-patients-with-non-st-segment-elevation-acute-coronary-syndrome-undergoing-percutaneous-coronary-intervention-an-fdg-positron-emission-tomography-and-optical
#17
Nevio Taglieri, Cristina Nanni, Gabriele Ghetti, Rachele Bonfiglioli, Francesco Saia, Maria Letizia Bacchi Reggiani, Giacomo Maria Lima, Valeria Marco, Francesco Prati, Stefano Fanti, Claudio Rapezzi
PURPOSE: To evaluate the relationship between aortic inflammation as assessed by (18)F-fluorodeoxyglucose-positron emission tomography ((18)F-FDG-PET) and features of plaque vulnerability as assessed by frequency domain-optical coherence tomography (FD-OCT). METHODS: We enrolled 30 consecutive non-ST-segment elevation acute coronary syndrome patients undergoing percutaneous coronary intervention. All patients underwent three-vessel OCT before intervention and (18)F-FDG-PET before discharge...
June 6, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28584460/hemophagocytic-lymphohistiocytosis-associated-with-anaplasmosis
#18
Tamara M Johnson, Melinda S Brown, Mohamed Rabbat, Jihad Slim
Hemophagocytic lymphohistiocytosis (HLH) is a hyperinflammatory syndrome characterized by unregulated macrophage and T-lymphocyte activation resulting in cytokine overproduction and subsequent histiocytic phagocytosis. Variant infections, particularly viruses have been postulated as the inciting factor for this potentially fatal disease. Herein, we will report a case of HLH associated with anaplasmosis.
April 2017: Journal of Global Infectious Diseases
https://www.readbyqxmd.com/read/28583781/-macrophage-activation-syndrome-and-kawasaki-disease-four-new-cases
#19
B Dumont, P Jeannoel, L Trapes, E Rolland, C Gay, J-L Stephan
Macrophage activation syndrome (MAS) is a rarely reported complication of Kawasaki disease (KD). It must be sought during KD with unusual clinical signs, such as enlargement of the liver or spleen, cytopenia (including thrombocytopenia), and elevated serum triglycerides. Here, we report four cases from a single center. The first is the description of a case of KD occurring in an 11-month-old child 15 days after the occurrence of infectious spondylitis. For the second, acute myocarditis heralded KD in a 5-year-old child...
June 2, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28575810/homology-modeling-and-molecular-docking-studies-on-type-ii-diabetes-complications-reduced-ppar%C3%AE-receptor-with-various-ligand-molecules
#20
S Prabhu, S Vijayakumar, P Manogar, Gaanty Pragas Maniam, Natanamurugaraj Govindan
Peroxisome proliferator-activated receptor gamma (PPARγ), a type II nuclear receptor present in adipose tissue, colon and macrophages. It reduces the hyperglycemia associated metabolic syndromes. Particularly, type II diabetes-related cardiovascular system risk in human beings. The fatty acid storage and glucose metabolism are regulated by PPARγ activation in human body. According to recent reports commercially available PPARγ activating drugs have been causing severe side effects. At the same time, natural products have been proved to be a promising area of drug discovery...
May 30, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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