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macrophagic activation syndrome

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https://www.readbyqxmd.com/read/29050187/-cytokine-analysis-of-aqueous-humor-in-aids-patients
#1
W J Kong, C G Guo, L Y Xie, W B Wei, H W Dong, C Chen, K F Du
Objective: To explore the Cytokine of aqueous humor in AIDS patients with different eye diseases. Methods: A case-control study including 38 patients who was diagnosed as acquired immunodeficiency syndrome(AIDS) at Infectious Center and Department of Ophthalmology in Beijing You'an Hospital, Capital Medical University. And 16 cases of 38 patients were cytomegalovirus retinitis (CMVR), 14 cases were HIV-related retinal disease, and 8 cases presented as normal. A series of tests were performed including vision acuity check, intraocular pressure, fundus photography, blood cell count of CD4+ T lymphocyte and the content of cytokines in aqueous humor by Luminex 200(TM) liquid chip analyzer...
October 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29031722/activated-macrophages-control-human-adipocyte-mitochondrial-bioenergetics-via-secreted-factors
#2
Michaela Keuper, Stephan Sachs, Ellen Walheim, Lucia Berti, Bernhard Raedle, Daniel Tews, Pamela Fischer-Posovszky, Martin Wabitsch, Martin Hrabě de Angelis, Gabi Kastenmüller, Matthias H Tschöp, Martin Jastroch, Harald Staiger, Susanna M Hofmann
OBJECTIVE: Obesity-associated WAT inflammation is characterized by the accumulation and local activation of macrophages (MΦs), and recent data from mouse studies suggest that macrophages are modifiers of adipocyte energy metabolism and mitochondrial function. As mitochondrial dysfunction has been associated with obesity and the metabolic syndrome in humans, herein we aimed to delineate how human macrophages may affect energy metabolism of white adipocytes. METHODS: Human adipose tissue gene expression analysis for markers of macrophage activation and tissue inflammation (CD11c, CD40, CD163, CD206, CD80, MCP1, TNFα) in relationship to mitochondrial complex I (NDUFB8) and complex III (UQCRC2) was performed on subcutaneous WAT of 24 women (BMI 20-61 kg/m(2))...
October 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29028801/docrl-maintains-immune-cell-quiescence-by-regulating-endosomal-traffic
#3
Steven J Del Signore, Sarah A Biber, Katherine S Lehmann, Stephanie R Heimler, Benjamin H Rosenfeld, Tania L Eskin, Sean T Sweeney, Avital A Rodal
Lowe Syndrome is a developmental disorder characterized by eye, kidney, and neurological pathologies, and is caused by mutations in the phosphatidylinositol-5-phosphatase OCRL. OCRL plays diverse roles in endocytic and endolysosomal trafficking, cytokinesis, and ciliogenesis, but it is unclear which of these cellular functions underlie specific patient symptoms. Here, we show that mutation of Drosophila OCRL causes cell-autonomous activation of hemocytes, which are macrophage-like cells of the innate immune system...
October 13, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28993690/spred2-deficiecy-protects-mice-from-polymicrobial-septic-peritonitis-by-enhancing-inflammation-and-bacterial-clearance
#4
Junya Itakura, Miwa Sato, Toshihiro Ito, Megumi Mino, Soichiro Fushimi, Sakuma Takahashi, Teizo Yoshimura, Akihiro Matsukawa
Sepsis is an infection-induced systemic inflammatory syndrome and a major cause of death for critically ill patients. Here, we examined whether the absence of Sprouty-related EVH1-domain-containing protein 2 (Spred2), a negative regulator of the Ras/Raf/ERK/MAPK pathway, influences host defense against polymicrobial sepsis (PMS) induced by cecal ligation and puncture (CLP). Compared to wild-type mice, Spred2(-/-) mice exhibited higher survival rates with increased level of leukocyte infiltration and local chemokine production and reduced plasma and peritoneal bacterial loads after CLP...
October 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28991699/microglial-macrophage-markers-chi3l1-scd14-and-scd163-in-csf-and-serum-of-pediatric-inflammatory-and-non-inflammatory-neurological-disorders-a-case-control-study-and-reference-ranges
#5
Michael R Pranzatelli, Elizabeth D Tate, Nathan R McGee
OBJECTIVE: To assess the role of microglia and macrophages in neuroinflammatory disorders in children via biomarkers, and establish control reference ranges. METHODS: In an IRB-approved case-control study of 98 children, the concentrations of CSF/serum CHI3L1, sCD14, and sCD163 were measured by ELISA. Groups were controls (non-inflammatory neurological disorders, NIND, n=37), opsoclonus-myoclonus syndrome (OMS, n=37), and other inflammatory neurological disorders (OIND, n=24)...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28980402/is-palmitoleic-acid-a-plausible-non-pharmacological-strategy-to-prevent-or-control-chronic-metabolic-and-inflammatory-disorders
#6
REVIEW
Camila O Souza, Gretchen K Vannice, José C Rosa Neto, Philip C Calder
Although dietary fatty acids can modulate metabolic and immune responses, the effects of palmitoleic acid (16:1n-7) remain unclear. Since this monounsaturated fatty acid was described as a lipokine, studies with cell culture and rodent models have suggested it enhances whole body insulin sensitivity, stimulates insulin secretion by β-cells, increases hepatic fatty acid oxidation, improves the blood lipid profile, and alters macrophage differentiation. However, human studies report elevated blood levels of palmitoleic acid in people with obesity and metabolic syndrome...
October 5, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28978826/progress-in-iron-metabolism-research
#7
Hiroshi Kawabata
Iron is essential for various cellular processes, but an excess of iron may cause organ damage through the production of reactive oxygen species. Therefore, the amount of iron in the body must be strictly controlled. The central regulator of systemic iron homeostasis is hepcidin, which is primarily produced in the liver. Various molecules, including HFE, transferrin receptor 2 (TFR2), and hemojuvelin (HJV), are involved in sensing systemic iron status. Hepatocytes produce hepcidin in response to excess iron and inflammatory stimuli (e...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28963528/small-molecule-inhibition-of-cgas-reduces-interferon-expression-in-primary-macrophages-from-autoimmune-mice
#8
Jessica Vincent, Carolina Adura, Pu Gao, Antonio Luz, Lodoe Lama, Yasutomi Asano, Rei Okamoto, Toshihiro Imaeda, Jumpei Aida, Katherine Rothamel, Tasos Gogakos, Joshua Steinberg, Seth Reasoner, Kazuyoshi Aso, Thomas Tuschl, Dinshaw J Patel, J Fraser Glickman, Manuel Ascano
Cyclic GMP-AMP synthase is essential for innate immunity against infection and cellular damage, serving as a sensor of DNA from pathogens or mislocalized self-DNA. Upon binding double-stranded DNA, cyclic GMP-AMP synthase synthesizes a cyclic dinucleotide that initiates an inflammatory cellular response. Mouse studies that recapitulate causative mutations in the autoimmune disease Aicardi-Goutières syndrome demonstrate that ablating the cyclic GMP-AMP synthase gene abolishes the deleterious phenotype. Here, we report the discovery of a class of cyclic GMP-AMP synthase inhibitors identified by a high-throughput screen...
September 29, 2017: Nature Communications
https://www.readbyqxmd.com/read/28960260/h-ferritin-and-pro-inflammatory-cytokines-are-increased-in-the-bone-marrow-of-patients-affected-by-macrophage-activation-syndrome
#9
Piero Ruscitti, Paola Cipriani, Paola Di Benedetto, Vasiliky Liakouli, Onorina Berardicurti, Francesco Carubbi, Francesco Ciccia, Giuliana Guggino, Giovanni Triolo, Roberto Giacomelli
Macrophage activation syndrome (MAS) is hyper-inflammatory life-threatening syndrome, typically associated with high levels of serum ferritin. This is an iron storage protein including heavy (H) subunits and light (L) subunits, categorised on their molecular weight. The H-/L-subunits ratio may be different in tissues, depending on the specific tissue and pathophysiologic status. In this work, we analysed the bone marrow (BM) biopsies of adult MAS patients to assess the presence of: i. H-ferritin and L-ferritin; ii...
September 28, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28954201/rhesus-theta-%C3%AE-defensin-1-attenuates-endotoxin-induced-acute-lung-injury-by-inhibiting-proinflammatory-cytokines-and-neutrophil-recruitment
#10
Jordanna G Jayne, Timothy J Bensman, Justin B Schaal, A Young J Park, Elza Kimura, Dat Tran, Michael E Selsted, Paul M Beringer
Acute lung injury (ALI) is a clinical syndrome characterized by acute respiratory failure and is associated with substantial morbidity and mortality. Rhesus theta defensin-1 (RTD-1) is an antimicrobial peptide with immunomodulatory activity. As airway inflammation and neutrophil recruitment and activation are hallmarks of ALI, we evaluated the therapeutic efficacy of RTD-1 in pre-clinical models of the disease. We investigated the effect of RTD-1 on neutrophil chemotaxis and macrophage-driven pulmonary inflammation with human peripheral neutrophils and LPS-stimulated murine alveolar macrophage (MH-S) cells...
September 27, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28947398/hepatic-cytolysis-and-bicytopenia-after-15%C3%A2-days-of-four-drug-tuberculosis-treatment-in-senegal
#11
K Thiam, J M A N Sagne, E H M Ndiaye, M F Cissé, F B R Mbaye, N O Touré, Y Dia Kane, A Diatta, S Niang, U D Kombila, S Dia, M Ndao, W Ka
We report the case of a 31-year-old immunocompetent woman residing in Senegal, with localized microscopy-proved pulmonary tuberculosis, complicated by macrophage activation syndrome and associated with viral hepatitis B, identified due to hepatic cytolysis and a bicytopenia.
August 1, 2017: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28937704/a-high-concentration-of-fatty-acids-induces-tnf-%C3%AE-as-well-as-no-release-mediated-by-the-p2x4-receptor-and-the-protective-effects-of-puerarin-in-raw264-7-cells
#12
Yun-Ming Tu, Cheng-Xin Gong, Lu Ding, Xing-Zi Liu, Tao Li, Fang-Fang Hu, Shuo Wang, Chao-Peng Xiong, Shang-Dong Liang, Hong Xu
Circulating levels of free fatty acids (FFAs) are often found to be increased in patients with type 2 diabetes mellitus (T2DM) and metabolic syndrome (MS). High plasma FFA levels may give rise to maladaptive macrophage activation and promote inflammatory responses, which has been proposed as a potential mechanism for the development of DM and MS. P2X4 receptor (P2X4R), a ligand-gated cation channel activated by extracellular adenosine triphosphate (ATP), plays a primary role in the regulation of inflammatory responses...
September 22, 2017: Food & Function
https://www.readbyqxmd.com/read/28936212/how-viruses-contribute-to-the-pathogenesis-of-hemophagocytic-lymphohistiocytosis
#13
Ellen Brisse, Carine H Wouters, Graciela Andrei, Patrick Matthys
Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening, hyperinflammatory syndrome, characterized by the uncontrolled activation of macrophages and T cells, eliciting key symptoms such as persistent fever, hepatosplenomegaly, pancytopenia, hemophagocytosis, hyperferritinemia, and coagulopathy. Viral infections are frequently implicated in the onset of active HLH episodes, both in primary, genetic HLH as in the secondary, acquired form. Infections with herpesviruses such as Epstein-Barr virus and cytomegalovirus are the most common...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28935693/a-multidimensional-blood-stimulation-assay-reveals-immune-alterations-underlying-systemic-juvenile-idiopathic-arthritis
#14
Alma-Martina Cepika, Romain Banchereau, Elodie Segura, Marina Ohouo, Brandi Cantarel, Kristina Goller, Victoria Cantrell, Emily Ruchaud, Elizabeth Gatewood, Phuong Nguyen, Jinghua Gu, Esperanza Anguiano, Sandra Zurawski, Jeanine M Baisch, Marilynn Punaro, Nicole Baldwin, Gerlinde Obermoser, Karolina Palucka, Jacques Banchereau, Sebastian Amigorena, Virginia Pascual
The etiology of sporadic human chronic inflammatory diseases remains mostly unknown. To fill this gap, we developed a strategy that simultaneously integrates blood leukocyte responses to innate stimuli at the transcriptional, cellular, and secreted protein levels. When applied to systemic juvenile idiopathic arthritis (sJIA), an autoinflammatory disease of unknown etiology, this approach identified gene sets associated with specific cytokine environments and activated leukocyte subsets. During disease remission and off treatment, sJIA patients displayed dysregulated responses to TLR4, TLR8, and TLR7 stimulation...
September 21, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28924090/porcine-alveolar-macrophage-polarization-is-involved-in-inhibition-of-porcine-reproductive-and-respiratory-syndrome-virus-prrsv-replication
#15
Longtao Wang, Shouping Hu, Qiang Liu, Yiru Li, Lu Xu, Zhuo Zhang, Xuehui Cai, Xijun He
Macrophage polarization is a process by which macrophages acquire a distinct phenotypic and functional profile in response to microenvironmental signals. The classically and alternatively activated (M1 and M2, respectively) macrophage phenotypes are defined by the specific molecular characteristics induced in response to prototypic pro- and anti-inflammatory cues. In this study, we used LPS/IFN-γ and IL-4 to stimulate porcine alveolar macrophages (PAMs) in vitro and investigated the expression changes of several novel markers during macrophage polarization...
September 17, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28918795/-acute-on-chronic-liver-failure
#16
Nikolaj Worm Ørntoft, Karen Louise Thomsen, Gitte Dam, Niels Kristian Aagaard, Henning Grønbæk
Acute-on-chronic liver failure (ACLF) is a clinical syndrome characterized by acute decompensation of liver cirrhosis, organ failure and high short-term mortality (20-80% at one month). The main precipitants are infections and excessive alcohol intake, and the mechanistic features include a high level of systemic inflammation, macrophage activation and liver injury. The severity of ACLF is graded according to the number and extent of organ failures. Prognostic scores help predict mortality and support decisions on intensive treatment or futility...
September 18, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28918754/macrophage-activation-like-syndrome-an-immunological-entity-associated-with-rapid-progression-to-death-in-sepsis
#17
Evdoxia Kyriazopoulou, Konstantinos Leventogiannis, Anna Norrby-Teglund, Georgios Dimopoulos, Aikaterini Pantazi, Stylianos E Orfanos, Nikoletta Rovina, Iraklis Tsangaris, Theologia Gkavogianni, Elektra Botsa, Eleftheria Chassiou, Anastasia Kotanidou, Christina Kontouli, Panagiotis Chaloulis, Dimitrios Velissaris, Athina Savva, Jonas-Sundén Cullberg, Karolina Akinosoglou, Charalambos Gogos, Apostolos Armaganidis, Evangelos J Giamarellos-Bourboulis
BACKGROUND: A subanalysis of a randomized clinical trial indicated sepsis survival benefit from interleukin (IL)-1 blockade in patients with features of the macrophage activation-like syndrome (MALS). This study aimed to investigate the frequency of MALS and to develop a biomarker of diagnosis and prognosis. METHODS: Patients with infections and systemic inflammatory response syndrome were assigned to one test cohort (n = 3417) and a validation cohort (n = 1704)...
September 18, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28918421/macrophage-activation-syndrome-at-the-onset-of-glucocorticoid-resistant-systemic-lupus-erythematosus-a-case-report
#18
Delia Tulbă, Marius Balea, Cristian Băicuș
INTRODUCTION: Macrophage activation syndrome (MAS) is a life-threatening hyperinflammatory state mediated by uncontrolled cytokine storm and haemophagocytosis. Although rarely reported, MAS might occur in systemic lupus erythematosus (SLE), notably as an inaugural manifestation. Glucocorticoids (GCs) are the cornerstone of SLE therapy. However, in some cases high doses of GCs are required to achieve remission (i.e. glucocorticoid-resistance), leading to significant side effects. CASE REPORT: A 28-year-old Romani male was admitted to our hospital for polyarthralgia, polyserositis and fatigability...
September 16, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28914368/macrophage-activation-syndrome-in-still-s-disease-analysis-of-clinical-characteristics-and-survival-in-paediatric-and-adult-patients
#19
Piero Ruscitti, Carmela Rago, Luciana Breda, Paola Cipriani, Vasiliki Liakouli, Onorina Berardicurti, Francesco Carubbi, Caterina Di Battista, Alberto Verrotti, Roberto Giacomelli
Macrophage activation syndrome (MAS) is a reactive form of hemophagocytic lymphohistiocytosis, complicating Still's disease, both in paediatric and adult patients. In this work, we aimed to investigate clinical picture and outcome of Still's disease patients developing MAS. We performed a retrospective analysis of patients, both paediatrics and adults, affected by Still's disease attending our department. During the follow-up, each patient was investigated for MAS occurrence and possible predictors, clinical and laboratory factors, were analysed...
September 15, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28899403/effects-of-hla-drb1-alleles-on-susceptibility-and-clinical-manifestations-in-japanese-patients-with-adult-onset-still-s-disease
#20
Tomoyuki Asano, Hiroshi Furukawa, Shuzo Sato, Makiko Yashiro, Hiroko Kobayashi, Hiroshi Watanabe, Eiji Suzuki, Tomoyuki Ito, Yoshifumi Ubara, Daisuke Kobayashi, Nozomi Iwanaga, Yasumori Izumi, Keita Fujikawa, Satoshi Yamasaki, Tadashi Nakamura, Tomohiro Koga, Toshimasa Shimizu, Masataka Umeda, Fumiaki Nonaka, Michio Yasunami, Yukitaka Ueki, Katsumi Eguchi, Naoyuki Tsuchiya, Shigeto Tohma, Koh-Ichiro Yoshiura, Hiromasa Ohira, Atsushi Kawakami, Kiyoshi Migita
BACKGROUND: HLA-DRB1 alleles are major determinants of genetic predisposition to rheumatic diseases. We assessed whether DRB1 alleles are associated with susceptibility to particular clinical features of adult onset Still's disease (AOSD) in a Japanese population by determining the DRB1 allele distributions. METHODS: DRB1 genotyping of 96 patients with AOSD and 1,026 healthy controls was performed. Genomic DNA samples from the AOSD patients were also genotyped for MEFV exons 1, 2, 3, and 10 by direct sequencing...
September 12, 2017: Arthritis Research & Therapy
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