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macrophagic syndrome

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https://www.readbyqxmd.com/read/28642034/cyclooxygenase-2-promotes-pulmonary-intravascular-macrophage-accumulation-by-exacerbating-bmp-signaling-in-rat-experimental-hepatopulmonary-syndrome
#1
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
#2
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
#3
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
#4
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/28626191/hemophagocytic-lymphohistiocytosis-in-a-fatal-case-of-severe-fever-with-thrombocytopenia-syndrome
#5
Ayako Nakano, Hirohisa Ogawa, Yoshinori Nakanishi, Hiromi Fujita, Fumihiko Mahara, Kazuya Shiogama, Yutaka Tsutsumi, Toshiaki Takeichi
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging disease caused by a novel Bunyavirus with a high mortality rate. We herein report a fatal case of an 86-year-old woman with SFTS complaining of a fever, fatigue, and bicytopenia. Her condition deteriorated with rapid progression of bleeding tendency, disturbance of consciousness, and multiple organ failure leading to death on Day 6 of her illness. The histopathological findings in the autopsy revealed marked infiltration of macrophages with hemophagocytosis in the bone marrow, liver, and spleen leading to a diagnosis of hemophagocytic lymphohistiocytosis (HLH)...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28617889/erdheim-chester-disease-presenting-with-histiocytic-colitis-and-cytokine-storm
#6
George P Christophi, Yeshika Sharma, Quader Farhan, Umang Jain, Ted Walker, Gregory S Sayuc, Deborah C Rubin
BACKGROUND: Non-Langerhans histiocytosis is a group of inflammatory lymphoproliferative disorders originating from non-clonal expansion of hematopoietic stem cells into cytokine-secreting dendritic cells or macrophages. Erdheim-Chester Disease (ECD) is a rare type of non-Langerhans cell histiocytosis characterized by tissue inflammation and injury caused by macrophage infiltration and histologic findings of foamy histiocytes. Often ECD involves the skeleton, retroperitoneum and the orbits...
June 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
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
#7
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
#8
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
#9
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
#10
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/28598224/mesenchymal-stromal-cells-modulate-macrophages-in-clinically-relevant-lung-injury-models-by-extracellular-vesicle-mitochondrial-transfer
#11
Thomas J Morrison, Megan V Jackson, Erin K Cunningham, Adrien Kissenpfennig, Daniel F McAuley, Cecilia M O'Kane, Anna D Krasnodembskaya
RATIONALE: Acute Respiratory Distress Syndrome (ARDS) remains a major cause of respiratory failure in critically ill patients. Mesenchymal Stromal Cells (MSCs) are a promising candidate for a cell based therapy. However, the mechanisms of MSCs effects in ARDS are not well understood. Here we focused on the paracrine effect of MSCs on macrophage polarization and the role of extracellular vesicle (EV)-mediated mitochondrial transfer. OBJECTIVES: To determine the effects of human MSCs on macrophage function in the ARDS environment and to elucidate the mechanisms of these effects...
June 9, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28598083/-expressions-of-spinal-macrophage-colony-stimulating-factor-and-its-receptor-csf-1r-in-the-development-ofcomplicated-regional-pain-symptom-i
#12
Zhi-Min Liao, Yu-Ying Tang, Yang-Chun Zheng, Dan Xu
OBJECTIVES: To study the changes of mechanical allodynia and temperature hyperalgesia, as well as the expression of the spinal macrophage colony stimulating factor (M-CSF) and its receptor CSF-1R during the development of complicated regional pain symptom I(CRPS I). METHODS: The animal model of CRPS I was established using prolonged ischemia-reperfusion injury of rodent left hindpaw. The mechanical allodynia and temperature hyperalgesia of ipsilateral hindpaw were continuously measured for 14 d after reperfusion, and the expressions of spinal M-CSF and CSF-1R in ipsilateral spinal cord horn were measured with immunofluorescence technique on day 3, day 7 and day 14 after reperfusion...
September 2016: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28598057/macrophage-activation-syndrome
#13
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/28595552/pigment-epithelium-derived-factor-a-novel-therapeutic-target-for-cardiometabolic-diseases-and-related-complications
#14
Sho-Ichi Yamagishi, Takanori Matsui
Pigment epithelium-derived factor (PEDF) is a glycoprotein that belongs to the superfamily of serine protease inhibitors, serpins. It was first identified as a neuronal differentiating factor secreted by human retinal pigment epithelial cells, and then found to be the most potent inhibitor of pathological angiogenesis in mammalian eyes. Recently, PEDF has been shown not only to suppress oxidative stress and inflammatory reactions in vascular wall cells, T cells and macrophages, and adipocytes, but also to exert anti-thrombotic and anti-fibrotic properties, thereby protecting against the development and progression of various cardiometabolic diseases and related complications...
June 8, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28594894/micrornas-upregulated-during-hiv-infection-target-peroxisome-biogenesis-factors-implications-for-virus-biology-disease-mechanisms-and-neuropathology
#15
Zaikun Xu, Eugene L Asahchop, William G Branton, Benjamin B Gelman, Christopher Power, Tom C Hobman
HIV-associated neurocognitive disorders (HAND) represent a spectrum neurological syndrome that affects up to 25% of patients with HIV/AIDS. Multiple pathogenic mechanisms contribute to the development of HAND symptoms including chronic neuroinflammation and neurodegeneration. Among the factors linked to development of HAND is altered expression of host cell microRNAs (miRNAs) in brain. Here, we examined brain miRNA profiles among HIV/AIDS patients with and without HAND. Our analyses revealed differential expression of 17 miRNAs in brain tissue from HAND patients...
June 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28594137/increased-adipocyte-size-macrophage-infiltration-and-adverse-local-adipokine-profile-in-perirenal-fat-in-cushing-s-syndrome
#16
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/28593990/loss-of-asxl2-leads-to-myeloid-malignancies-in-mice
#17
Jianping Li, Fuhong He, Peng Zhang, Shi Chen, Hui Shi, Yanling Sun, Ying Guo, Hui Yang, Na Man, Sarah Greenblatt, Zhaomin Li, Zhengyu Guo, Yuan Zhou, Lan Wang, Lluis Morey, Sion Williams, Xi Chen, Qun-Tian Wang, Stephen D Nimer, Peng Yu, Qian-Fei Wang, Mingjiang Xu, Feng-Chun Yang
ASXL2 is frequently mutated in acute myeloid leukaemia patients with t(8;21). However, the roles of ASXL2 in normal haematopoiesis and the pathogenesis of myeloid malignancies remain unknown. Here we show that deletion of Asxl2 in mice leads to the development of myelodysplastic syndrome (MDS)-like disease. Asxl2(-/-) mice have an increased bone marrow (BM) long-term haematopoietic stem cells (HSCs) and granulocyte-macrophage progenitors compared with wild-type controls. Recipients transplanted with Asxl2(-/-) and Asxl2(+/-) BM cells have shortened lifespan due to the development of MDS-like disease or myeloid leukaemia...
June 8, 2017: Nature Communications
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
#18
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
#19
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/28588755/role-of-pro-and-anti-inflammatory-phenomena-in-the-physiopathology-of-type-2-diabetes-and-obesity
#20
REVIEW
Luciano Pirola, José Candido Ferraz
In obesity, persistent low-grade inflammation is considered as a major contributor towards the progression to insulin resistance and type 2 diabetes while in lean subjects the immune environment is non-inflammatory. Massive adipose tissue (AT) infiltration by pro-inflammatory M1 macrophages and several T cell subsets as obesity develops leads to the accumulation - both in the AT and systemically - of numerous pro-inflammatory cytokines, including interleukin-1β (IL-1β), tumor necrosis factor α, IL-17 and IL-6 which are strongly associated with the progression of the obese phenotype towards the metabolic syndrome...
May 26, 2017: World Journal of Biological Chemistry
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