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macrophage activating syndrome

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https://www.readbyqxmd.com/read/28205524/interleukin-33-produced-by-m2-macrophages-and-other-immune-cells-contributes-to-th2-immune-reaction-of-igg4-related-disease
#1
Sachiko Furukawa, Masafumi Moriyama, Kensuke Miyake, Hitoshi Nakashima, Akihiko Tanaka, Takashi Maehara, Mana Iizuka-Koga, Hiroto Tsuboi, Jun-Nosuke Hayashida, Noriko Ishiguro, Masaki Yamauchi, Takayuki Sumida, Seiji Nakamura
IgG4-related disease (IgG4-RD) is characterized by elevated serum IgG4 and marked infiltration of IgG4-positive cells in multiple organs. Interleukin-33 (IL-33) is a recently described cytokine that is secreted by damaged epithelial cells, macrophages, and dendritic cells, and potently activates helper T type 2 (Th2) immune responses, which have been suggested to play a major role in IgG4 production of IgG4-RD. Here, we assessed the expression of IL-33 and related molecules in the salivary glands (SGs) of patients with IgG4-RD versus that in patients with Sjögren's syndrome (SS) and controls...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28204893/gastrointestinal-system-manifestations-in-juvenile-systemic-lupus-erythematosus
#2
Hafize Emine Sönmez, Asuman Nur Karhan, Ezgi Deniz Batu, Yelda Bilginer, Ersin Gümüş, Hülya Demir, Aysel Yüce, Seza Özen
Systemic lupus erythematosus (SLE) is an autoimmune disease which may involve gastrointestinal system (GIS). The aim of this study was to present GIS manifestations of pediatric SLE patients. The medical files of 69 children with SLE followed between January 2011 and January 2016 were reviewed. All fulfilled the Systemic Lupus International Collaborating Clinics criteria. All patients (≤18 years of age) with GIS manifestations were included. GIS manifestations were observed in 19 (27.5%) out of 69 SLE patients and present at the time of SLE diagnosis in 13 (68...
February 16, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28204878/unusual-onset-of-adult-still-s-disease-due-to-a%C3%A2-systemic-reaction-to-artificial-breast-implants
#3
A Wehr, G Grieb, C Trautwein, K Streetz
In this manuscript, we report an exceptional observation study of a young woman suffering from an autoimmune syndrome induced by adjuvants (ASIA). Until today only seven cases of adult-onset Still's disease (AOSD) induced by breast implants have been published. This may be due to the fact that this illness itself is very rare; however, the reason might also be that the community is not sensitized to the case-specific symptoms. Within this article, we show for the first time highly detailed diagnostic test procedures such as PET-CT scans and specific histological staining of the breast tissue, displaying proinflammatory macrophages that are a well-known activator and booster of autoimmune diseases...
February 15, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28202118/-clinical-and-laboratory-features-of-macrophage-activation-syndrome
#4
Li Guo, Mei-Ping Lu, Gui-Juan Dong, Li-Ping Teng, Yi-Ping Xu, Li-Xia Zou, Qi Zheng
OBJECTIVE: To study the clinical and laboratory features of macrophage activation syndrome (MAS) at the early stage of diagnosis, and to explore a method for early identification of MAS. METHODS: A retrospective analysis was performed for the demographic data, clinical and laboratory features, and treatment outcomes of 21 MAS patients. RESULTS: Of the 21 MAS patients, 14 had systemic juvenile idiopathic arthritis, 5 had Kawasaki disease (KD), and 2 had connective tissue disease (CTD) as primary diseases...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28196537/characterization-of-a-novel-disease-causing-mutation-in-exon-1-of-sh2d1a-gene-through-amplicon-sequencing-a-case-report-on-hlh
#5
Shiyuan Zhou, Hongyu Ma, Bo Gao, Guangming Fang, Yi Zeng, Qing Zhang, GaoFu Qi
BACKGROUND: Hemophagocytic lymphohistocytosis (HLH) is a rare but fatal hyperinflammatory syndrome caused by uncontrolled proliferation of activated macrophages and T lymphocytes secreting high amounts of inflammatory cytokines. Genetic defect is a common cause of HLH. HLH is complicated to be diagnosed as there are many common symptoms with other disorders. CASE PRESENTATION: Here we report on an HLH case caused by 1 bp deletion in gene SH2D1A. Patient was a 3-years-old boy and had fever for more than 8 days...
February 14, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28194019/il-25-stimulates-m2-macrophage-polarization-and-thereby-promotes-mitochondrial-respiratory-capacity-and-lipolysis-in-adipose-tissues-against-obesity
#6
Juan Feng, Lingyi Li, Zhiying Ou, Qiao Li, Baoyong Gong, Zhenxian Zhao, Weiwei Qi, Ti Zhou, Jun Zhong, Weibin Cai, Xia Yang, Aiping Zhao, Guoquan Gao, Zhonghan Yang
Obesity and associated metabolic diseases are characterized by a chronic low-grade inflammatory state with the infiltration of many inflammatory cells, especially macrophages. Immune molecules, including some cytokines, have a close relationship with metabolism. Interleukin (IL)-25 is a member of the IL-17 cytokine family that can regulate macrophages and alleviate some metabolic dysfunction; however, its role and mechanisms in lipid metabolism remain to be extensively clarified. Human serum and liver biopsy specimens, high-fat diet-induced obesity mice and DB/DB (Lepr-/-) animal models were used to examine IL-25 expression in obesity and nonalcoholic fatty liver diseases (NAFLD)...
February 13, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28182362/upregulation-of-foxo-1-signaling-mediates-the-proinflammatory-cytokine-upregulation-in-the-macrophage-from-polycystic-ovary-syndrome-patients
#7
Ning Li, Xiaoyan Wang, Xiaojie Wang, Hongna Yu, Li Lin, Chengming Sun, Peng Liu, Yongli Chu, Jianqing Hou
BACKGROUND: Chronic activation of macrophage-mediated inflammatory signals in insulin-sensitive metabolic tissues is thought to be one of the causes of insulin resistance-one of the hallmarks of the metabolic syndrome. Insulin resistance is a feature of polycystic ovary syndrome (PCOS) and is related to mitochondrial and endothelial function. METHODS: In the present study, we investigated the phosphorylation level of FoxO 1, which is suppressed by the action of AKT, triggers the TLR4 inflammatory signaling pathway in the macrophages, from polycystic ovary syndrome patients or normal subjects...
February 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28178439/juvenile-idiopathic-arthritis-in-the-era-of-international-cooperation
#8
REVIEW
Yosef Uziel
Juvenile idiopathic arthritis (JIA) is the most common chronic disease of childhood. Improved understanding of its pathogenesis has led to international cooperation in clinical studies. Multicenter, international collaborations and research facilitate rapid enrollment of enough patients to enable a variety of studies, including those of epidemiology, diagnostic and classification criteria, genetic disease predisposition, pathogenesis, outcomes, and treatment protocols. In the last 20 years, the vision of the Pediatric Rheumatology International Trial Organization (PRINTO) has become a reality of worldwide collaboration in pediatric rheumatology research, including North American and European research groups...
January 30, 2017: Rambam Maimonides Medical Journal
https://www.readbyqxmd.com/read/28176791/il-36%C3%AE-is-a-crucial-proximal-component-of-protective-type-1-mediated-lung-mucosal-immunity-in-gram-positive-and-negative-bacterial-pneumonia
#9
M A Kovach, B Singer, G Martinez-Colon, M W Newstead, X Zeng, P Mancuso, T A Moore, S L Kunkel, M Peters-Golden, B B Moore, T J Standiford
Interleukin-36γ (IL-36γ) is a member of novel IL-1-like proinflammatory cytokine family that are highly expressed in epithelial tissues and several myeloid-derived cell types. Little is known about the role of the IL-36 family in mucosal immunity, including lung anti-bacterial responses. We used murine models of IL-36γ deficiency to assess the contribution of IL-36γ in the lung during experimental pneumonia. Induction of IL-36γ was observed in the lung in response to Streptococcus pneumoniae (Sp) infection, and mature IL-36γ protein was secreted primarily in microparticles...
February 8, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28161232/-correctly-address-the-cause-of-hemophagocytic-lymphohistiocytosis
#10
M Penel-Page, B Ben Said, A Phan, L Hees, C Hartmann-Merlin, S Girard, Y Gillet, A Belot
Hemophagocytic lymphohistiocytosis (HLH) is a rare and severe syndrome usually associated with a cytotoxicity deficiency, which leads to an excess of immune response driven by activated macrophages and cytotoxic T cells. In children, HLH can be genetic, as part of a familial lymphohistiocytosis, or secondary: the most frequent causes are systemic-onset juvenile idiopathic arthritis, hematological malignancies, and severe infections, especially with Ebstein-Barr virus or leishmaniosis. We report on the case of a 3-year-old girl with no past medical history, who presented inaugural Pseudomonas aeruginosa maxillary osteitis, with secondary HLH...
February 1, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28153725/differences-in-the-effects-of-four-trpv1-channel-antagonists-on-lipopolysaccharide-induced-cytokine-production-and-cox-2-expression-in-murine-macrophages
#11
Yuki Ninomiya, Sei-Ichi Tanuma, Mitsutoshi Tsukimoto
Sepsis is a systemic inflammatory response syndrome triggered by lipopolysaccharide (LPS), an outer membrane component of gram-negative bacteria, and cytokine production via LPS-induced macrophage activation is deeply involved in its pathogenesis. Effective therapy of sepsis has not yet been established. However, it was reported that transient receptor potential vanilloid 1 (TRPV1) channel antagonist capsazepine (CPZ; a capsaicin analogue) attenuates sepsis in a murine model [Ang et al., PLoS ONE 6(9) (2011) e24535; J...
January 30, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28149024/extremely-high-ferritinemia-associated-with-haemophagocytic-lympho-histiocytosis-hlh
#12
Neelima Verma, Jyoti Chakraverty, Pankaj Baweja, Alka Girotra, Leena Chatterjee, Manish Chugh
Hyperferritinemia (>10,000 ng/ml) is an important hallmark used as an indicator of infection triggered macrophage activation syndrome leading to hemophagocytic lympho histiocytosis (HLH). Measurement of serum ferritin can be used in diagnosis as well as disease monitoring indicator and prognosis related to HLH, cAPS, sepsis, neoplasm and inflammatory conditions. It is a major contributor to manage critically ill patients as predicting and monitoring indicator. It can be used as acute phase response in conditions of MAS, AOSD, cAPS etc...
March 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28148962/quercetin-inhibits-inflammasome-activation-by-interfering-with-asc-oligomerization-and-prevents-interleukin-1-mediated-mouse-vasculitis
#13
Talita P Domiciano, Daiko Wakita, Heather D Jones, Timothy R Crother, Waldiceu A Verri, Moshe Arditi, Kenichi Shimada
Interleukin-1β (IL-1β) is a highly inflammatory cytokine that significantly contributes to both acute and chronic inflammatory diseases. The secretion of IL-1β requires a unique protease, caspase-1, which is activated by various protein platforms called inflammasomes. Data suggests a key role for mitochondrial reactive oxygen species for inflammasome activation. Flavonoids constitute a group of naturally occurring polyphenolic molecules with many biological activities, including antioxidant effects. In this study, we investigated the effect of three flavonoids, quercetin (QUC), naringenin, and silymarim on inflammasome activation...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28145460/caffeic-acid-cyclohexylamide-rescues-lethal-inflammation-in-septic-mice-through-inhibition-of-i%C3%AE%C2%BAb-kinase-in-innate-immune-process
#14
Jun Hyeon Choi, Sun Hong Park, Jae-Kyung Jung, Won-Jea Cho, Byeongwoo Ahn, Cheong-Yong Yun, Yong Pyo Choi, Jong Hun Yeo, Heesoon Lee, Jin Tae Hong, Sang-Bae Han, Youngsoo Kim
Targeting myeloid differentiation protein 2 (MD-2) or Toll-like receptor 4 (TLR4) with small molecule inhibitor rescues the systemic inflammatory response syndrome (SIRS) in sepsis due to infection with Gram-negative bacteria but not other microbes. Herein, we provided IκB kinase β (IKKβ) in innate immune process as a molecular target of caffeic acid cyclohexylamide (CGA-JK3) in the treatment of polymicrobial TLR agonists-induced lethal inflammation. CGA-JK3 ameliorated E. coli lipopolysaccharide (LPS, MD-2/TLR4 agonist)-induced endotoxic shock, cecal ligation and puncture (CLP)-challenged septic shock or LPS plus D-galactosamine (GalN)-induced acute liver failure (ALF) in C57BL/6J mice...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28139216/integrated-stress-response-activation-by-sleep-fragmentation-during-late-gestation-in-mice-leads-to-emergence-of-adverse-metabolic-phenotype-in-offspring
#15
Wojciech Trzepizur, Abdelnaby Khalyfa, Zhuanhong Qiao, Brian Popko, David Gozal
BACKGROUND: Late gestational sleep fragmentation (SF) is highly prevalent particularly in obese women, and induces metabolic dysfunction in adult offspring mice. SF induces activation of the integrated stress response (ISR), which might be involved in metabolic disorders. We hypothesized that adult offspring of double mutant mice (DM) involving the critical ISR genes CHOP and GADD34 would be protected from developing obesity and insulin resistance following SF. METHODS: Time-pregnant CHOP/GADD34 DM and wild type (WT) mice were randomly assigned to sleep control (SC) or SF conditions during the last 5days of gestation...
January 21, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28129686/a-novel-approach-to-discriminate-subgroups-in-multiple-sclerosis
#16
Mehrdad Farrokhi, Zahra Saadatpour, Elyas Fadaee, Leila Saadatpour, Ali Rezaei, Pedram Moeini, Ali Amani Beni
Multiple sclerosis (MS) is an autoimmune disease of central nervous system. Since different types of immune cells are involved in MS pathogenesis, in this study we aimed to evaluate serum levels of several immunological components including soluble CD4 (sCD4), sCD8, sCD163, and immunoglobulins as markers of activity of T-cells, macrophages, and B-cells in different types of MS. Serum levels of sCD4, sCD8, and sCD163 of patients with relapsing-remitting MS (RRMS, n=61), primary progressive MS (PRMS, n=31), secondary progressive MS (SPMS, n=31), clinical isolated syndrome (CIS, n=31) and neuromyelitis optica (NMO, n=31), and healthy controls (n=49) were measured using enzyme-linked immunosorbent assay (ELISA)...
December 2016: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/28125526/mir-155-alleviates-septic-lung-injury-by-inducing-autophagy-via-inhibition-of-transforming-growth-factor-%C3%AE-activated-binding-protein-2
#17
Fen Liu, Cheng Nie, Ning Zhao, Yan Wang, Yang Liu, Yong Li, Zhenguo Zeng, Chengzhi Ding, Qiang Shao, Cheng Qing, Liang Xia, Zhiyong Peng, Kejian Qian
BACKGROUND: The anti-inflammatory effect of miR-155 was closely linked to transforming growth factor-β-activated kinase-1-binding protein 2 (TAB2) and autophagy. This study investigated the role of miR-155 in attenuation of septic lung injury through TAB2 and autophagy in mouse model and in vitro. METHODS: Patients who underwent fiberoptic bronchoscope examination with or without septic lung injury were recruited for collection of bronchoalveolar lavage fluid (BALF) samples...
January 25, 2017: Shock
https://www.readbyqxmd.com/read/28120605/hemophagocytic-lymphohistiocytosis-mimics-many-common-conditions-case-series-and-review-of-literature
#18
A T Akenroye, N Madan, F Mohammadi, J Leider
Introduction. Hemophagocytic lymphohistiocytosis (HLH), a rare but potentially fatal disease, is characterized by excessive immune activation and cytokine release which stimulates bone marrow macrophages to engulf hematopoietic cells. HLH could be secondary to infections: viral, fungal, and bacterial; malignancies and autoimmune diseases. The diagnosis of HLH is usually delayed due to the presence of non-specific symptoms at presentation. This delay contributes to increased mortality. Cases and review. We present the case of 4 patients who presented with subjective fevers and extreme fatigue...
January 2017: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28118607/middle-east-respiratory-syndrome-corona-virus-spike-glycoprotein-suppresses-macrophage-responses-via-dpp4-mediated-induction-of-irak-m-and-ppar%C3%AE
#19
Ahmed A Al-Qahtani, Konstantina Lyroni, Marina Aznaourova, Melpomeni Tseliou, Mashael R Al-Anazi, Mohammed N Al-Ahdal, Saad Alkahtani, George Sourvinos, Christos Tsatsanis
Middle East Respiratory Syndrome Corona Virus (MERS-CoV) is transmitted via the respiratory tract and causes severe Acute Respiratory Distress Syndrome by infecting lung epithelial cells and macrophages. Macrophages can readily recognize the virus and eliminate it. MERS-CoV infects cells via its Spike (S) glycoprotein that binds on Dipeptidyl-Peptidase 4 (DPP4) receptor present on macrophages. Whether this Spike/DPP4 association affects macrophage responses remains unknown. Herein we demonstrated that infection of macrophages with lentiviral particles pseudotyped with MERS-CoV S glycoprotein results in suppression of macrophage responses since it reduced the capacity of macrophages to produce TNFα and IL-6 in naive and LPS-activated THP-1 macrophages and augmented LPS-induced production of the immunosuppressive cytokine IL-10...
January 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28115719/immunoinhibitory-checkpoint-deficiency-in-medium-and-large-vessel-vasculitis
#20
Hui Zhang, Ryu Watanabe, Gerald J Berry, Augusto Vaglio, Yaping Joyce Liao, Kenneth J Warrington, Jörg J Goronzy, Cornelia M Weyand
Giant cell arteritis (GCA) causes autoimmune inflammation of the aorta and its large branches, resulting in aortic arch syndrome, blindness, and stroke. CD4(+) T cells and macrophages form organized granulomatous lesions in the walls of affected arteries, destroy the tunica media, and induce ischemic organ damage through rapid intimal hyperplasia and luminal occlusion. Pathogenic mechanisms remain insufficiently understood; specifically, it is unknown whether the unopposed activation of the immune system is because of deficiency of immunoinhibitory checkpoints...
February 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
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