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macrophage activation syndrome

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https://www.readbyqxmd.com/read/28072933/altered-blood-levels-of-vitamin-d-cathelicidin-and-parathyroid-hormone-in-patients-with-sepsis-a-pilot-study
#1
T Greulich, W Regner, M Branscheidt, C Herr, A R Koczulla, C F Vogelmeier, R Bals
It has been recognised that vitamin D (VitD) has a potential role in the regulation of inflammation and protection from infection. In a prospective clinical observational pilot study, we investigated the serum levels of 25-hydroxyvitamin-D3 (25(OH)D3), 1,25-hydroxyvitamin-D3 (1,25(OH)2D3), parathyroid hormone (PTH), and cathelicidin in intensive care unit (ICU) patients with or without systemic inflammatory response syndrome (SIRS). We included 32 patients with SIRS (septic patients), 16 ICU patients without SIRS, and 16 healthy controls...
January 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/28070498/hemophagocytic-lymphohistiocytosis-in-adults-an-under-recognized-entity
#2
Abdul Rashid Shah, Tariq Muzzafar, Rita Assi, Dawid Schellingerhout, Zeev Estrov, Gevorg Tamamyan, Hagop Kantarjian, Naval Daver
Hemophagocytic lymphohistiocytosis (HLH) is a syndrome of severe immune activation with macrophage and T-cell infiltration resulting in, multi organ damage. HLH may be primary or secondary in etiology. A high index of suspicion is essential for early diagnosis and treatment. Diagnostic criteria need to be refined and newer treatment options to be explored in order to improve survival especially in adult HLH and malignancy-associated HLH (M-HLH). We report a case of malignancy associated HLH (M-HLH) in adult treated on one of the only FDA-approved protocols for adult HLH to highlight the diagnostic and therapeutic challenges of this disease entity...
June 2017: BBA Clinical
https://www.readbyqxmd.com/read/28053137/activation-of-cecr1-in-m2-like-tams-promotes-paracrine-stimulation-mediated-glial-tumor-progression
#3
Changbin Zhu, Dana Mustafa, Ping-Pin Zheng, Marcel van der Weiden, Andrea Sacchetti, Maarten Brandt, Ihsan Chrifi, Dennie Tempel, Pieter J M Leenen, Dirk Jan Duncker, Caroline Cheng, Johan M Kros
BACKGROUND: The majority of glioma-associated microglia/macrophages have been identified as M2-type macrophages with immune suppressive and tumor supportive action. Recently, the extracellular adenosine deaminase protein Cat Eye Syndrome Critical Region Protein 1 (CECR1) was shown to regulate macrophage maturation. In this study, we investigate the role of CECR1 in the regulation of the glioma-associated macrophage response. METHODS: Expression of CECR1 was assessed in human glioma samples...
January 3, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28052127/overexpression-of-histone-deacetylase-6-enhances-resistance-to-porcine-reproductive-and-respiratory-syndrome-virus-in-pigs
#4
Tianyu Lu, Zhiyuan Song, Qiuyan Li, Zhiguo Li, Meng Wang, Lin Liu, Kegong Tian, Ning Li
Porcine reproductive and respiratory syndrome virus (PRRSV) is one of the most economically relevant viral pathogens in pigs and causes substantial losses in the pig industry worldwide each year. At present, PRRSV vaccines do not effectively prevent and control this disease. Consequently, it is necessary to develop new antiviral strategies to compensate for the inefficacy of the available vaccines. Histone deacetylase 6 (HDAC6) is an important member of the histone deacetylase family that is responsible for regulating many important biological processes...
2017: PloS One
https://www.readbyqxmd.com/read/28045404/liver-inflammation-and-fibrosis
#5
Yukinori Koyama, David A Brenner
Chronic liver inflammation leads to fibrosis and cirrhosis, which is the 12th leading cause of death in the United States. Hepatocyte steatosis is a component of metabolic syndrome and insulin resistance. Hepatic steatosis may be benign or progress to hepatocyte injury and the initiation of inflammation, which activates immune cells. While Kupffer cells are the resident macrophage in the liver, inflammatory cells such as infiltrating macrophages, T lymphocytes, neutrophils, and DCs all contribute to liver inflammation...
January 3, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28044051/maturation-phenotype-of-peripheral-blood-monocyte-macrophage-after-stimulation-with-lipopolysaccharides-in-irritable-bowel-syndrome
#6
Oscar A Rodríguez-Fandiño, Joselín Hernández-Ruiz, Yolanda López-Vidal, Luis Charúa-Guindic, Galileo Escobedo, Max J Schmulson
Background/Aims: Abnormal immune regulation and increased intestinal permeability augmenting the passage of bacterial molecules that can activate immune cells, such as monocytes/macrophages, have been reported in irritable bowel syndrome (IBS). To compare the maturation phenotype of monocytes/macrophages (CD14+) from IBS patients and controls in the presence or absence of E. coli lipopolysaccharides (LPS), in vitro. Methods: Mononuclear cells were isolated from peripheral blood of 20 Rome II-IBS patients and 19 controls and cultured with or without LPS for 72 hours...
January 2, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28039295/third-generation-cd28-4-1bb-chimeric-antigen-receptor-t-cells-for-chemotherapy-relapsed-or-refractory-acute-lymphoblastic-leukaemia-a-non-randomised-open-label-phase-i-trial-protocol
#7
Xiao-Yi Tang, Yao Sun, Ang Zhang, Guo-Liang Hu, Wei Cao, Dan-Hong Wang, Bin Zhang, Hu Chen
INTRODUCTION: There is no curative treatment available for patients with chemotherapy relapsed or refractory CD19+ B cells-derived acute lymphoblastic leukaemia (r/r B-ALL). Although CD19-targeting second-generation (2nd-G) chimeric antigen receptor (CAR)-modified T cells carrying CD28 or 4-1BB domains have demonstrated potency in patients with advanced B-ALL, these 2 signalling domains endow CAR-T cells with different and complementary functional properties. Preclinical results have shown that third-generation (3rd-G) CAR-T cells combining 4-1BB and CD28 signalling domains have superior activation and proliferation capacity compared with 2nd-G CAR-T cells carrying CD28 domain...
December 30, 2016: BMJ Open
https://www.readbyqxmd.com/read/28034913/il-10-distinguishes-a-unique-population-of-activated-effector-like-cd8-t-cells-in-murine-acute-liver-inflammation
#8
Julia E Rood, Scott W Canna, Lehn K Weaver, John W Tobias, Edward M Behrens
Immune-mediated liver injury is a central feature of hyperinflammatory diseases, such as hemophagocytic syndromes, yet the immunologic mechanisms underlying those processes are incompletely understood. In this study, we used the toll-like receptor 9 (TLR9)-mediated model of a hemophagocytic syndrome known as macrophage activation syndrome (MAS) to dissect the predominant immune cell populations infiltrating the liver during inflammation. We identified CD8(+) T cells that unexpectedly produce interleukin-10 (IL-10) in addition to interferon-γ (IFN-γ) as a major hepatic population induced by TLR9 stimulation...
December 29, 2016: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28031477/lipin-2-regulates-nlrp3-inflammasome-by-affecting-p2x7-receptor-activation
#9
Gema Lordén, Itziar Sanjuán-García, Nagore de Pablo, Clara Meana, Inés Alvarez-Miguel, M Teresa Pérez-García, Pablo Pelegrín, Jesús Balsinde, María A Balboa
Mutations in human LPIN2 produce a disease known as Majeed syndrome, the clinical manifestations of which are ameliorated by strategies that block IL-1β or its receptor. However the role of lipin-2 during IL-1β production remains elusive. We show here that lipin-2 controls excessive IL-1β formation in primary human and mouse macrophages by several mechanisms, including activation of the inflammasome NLRP3. Lipin-2 regulates MAPK activation, which mediates synthesis of pro-IL-1β during inflammasome priming...
December 28, 2016: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28024857/calpain-inhibition-decreases-inflammatory-protein-expression-in-vessel-walls-in-a-model-of-chronic-myocardial-ischemia
#10
Brittany A Potz, Ashraf A Sabe, Nassrene Y Elmadhun, Sharif A Sabe, Benedikt J V Braun, Richard T Clements, Anny Usheva, Frank W Sellke
BACKGROUND: Emerging data suggest a link between calpain activation and the enhanced inflammatory response of the cardiovascular system. We hypothesize that calpain activation associates with altered inflammatory protein expression in correlation with the proinflammatory profile of the myocardium. Our pig hypercholesterolemic model with chronic myocardial ischemia was treated with calpain inhibitors to establish their potential to improve cardiac function. METHODS: Yorkshire swine, fed a high cholesterol diet for 4 weeks then underwent placement of an ameroid constrictor on the left circumflex artery...
December 23, 2016: Surgery
https://www.readbyqxmd.com/read/28017961/ginsenoside-rb2-enhances-the-anti-inflammatory-effect-of-%C3%AF-3-fatty-acid-in-lps-stimulated-raw264-7-macrophages-by-upregulating-gpr120-expression
#11
Qi Huang, Ting Wang, He-Yao Wang
Recent studies confirm that chronic low-grade inflammation is closely associated with metabolic syndromes, and anti-inflammatory therapy is a potential approach for treating cardiovascular diseases and type 2 diabetes. Accumulating evidence suggests that GPR120 activation is a feasible solution to ameliorating chronic inflammation and improving glucose metabolism. In this study we investigated whether ginsenoside Rb2 (Rb2), which exhibited regulatory activities in glucose and lipid metabolism, affected GPR120 expression in lipopolysaccharide (LPS)-activated mouse macrophage RAW264...
December 26, 2016: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28008786/a-probiotic-combination-attenuates-experimental-colitis-through-inhibition-of-innate-cytokine-production
#12
M S Kim, J S Byun, Y S Yoon, D Y Yum, M J Chung, J C Lee
Inflammatory bowel disease (IBD) is a severe immune cell-mediated syndrome characterised by extensive inflammatory and effector mucosal responses leading to tissue destruction in the colon and small intestine. The leading hypothesis is that dysbiosis of the gut flora causes an excessive immune response and inflammation in the gastrointestinal track. Lactic acid bacteria (LAB) can correct dysbiosis of the normal microbiota. In the current study, the therapeutic potential of seven LAB strains in combination to treat IBD was evaluated using experimental colitis model...
December 23, 2016: Beneficial Microbes
https://www.readbyqxmd.com/read/28003490/lineage-a-betacoronavirus-ns2-proteins-and-homologous-torovirus-berne-pp1a-carboxyterminal-domain-are-phosphodiesterases-that-antagonize-activation-of-rnase-l
#13
Stephen A Goldstein, Joshua M Thornbrough, Rong Zhang, Babal K Jha, Yize Li, Ruth Elliott, Katherine Quiroz-Figueroa, Annie I Chen, Robert H Silverman, Susan R Weiss
: Viruses in the family Coronaviridae, with the Nidovirus order, are etiologic agents of a range of human and animal diseases, including both mild and severe respiratory disease in humans. These viruses encode conserved replicase and structural proteins, and more diverse accessory proteins in the 3' end of their genomes that often act as host cell antagonists. We have previously shown that 2', 5' phosphodiesterases (PDE) encoded by the prototypical Betacoronavirus, mouse hepatitis virus (MHV), Middle East respiratory syndrome-associated coronavirus antagonize the oligoadenylate - ribonuclease L (OAS-RNase L) pathway...
December 21, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27995095/roles-of-the-putative-type-iv-like-secretion-system-key-component-vird4-and-prsa-in-pathogenesis-of-streptococcus-suis-type-2
#14
Xiaowu Jiang, Yunkai Yang, Jingjing Zhou, Lexin Zhu, Yuanxing Gu, Xiaoyan Zhang, Xiaoliang Li, Weihuan Fang
Streptococcus suis type 2 (SS2) is a zoonotic pathogen causing septic infection, meningitis and pneumonia in pigs and humans. SS2 may cause streptococcal toxic shock syndrome (STSS) probably due to excessive release of inflammatory cytokines. A previous study indicated that the virD4 gene in the putative type IV-like secretion system (T4SS) within the 89K pathogenicity island specific for recent epidemic strains contributed to the development of STSS. However, the functional basis of VirD4 in STSS remains unclear...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27994836/an-unexpected-fever-post-serogroup-b-meningococcal-sepsis
#15
Daniele Donà, Elisa Gnoato, Carlo Giaquinto, Carlo Moretti
This case report describes an invasive meningococcal group B infection followed by the development of Kawasaki disease (KD) complicated by macrophage activation syndrome (MAS) in a 2-year-old child. The presented case indicates the possible etiologic relationship between meningococcal sepsis and KD as support of bacterial toxin induced theory. It's important to maintain a high grade of suspicious for KD in every relapse of fever also during convalescence phase of severe infection. Usually, initial treatment with intravenous immunoglobulin is sufficient to control the disease; but, in case of refractory KD complicated by MAS, corticosteroid therapy represents a good option inducing prompt fever resolution and clinical improvement...
November 17, 2016: Pediatric Reports
https://www.readbyqxmd.com/read/27990393/subcutaneous-panniculitis-like-t-cell-lymphoma-with-macrophage-activation-syndrome-treated-by-cyclosporine-and-prednisolone
#16
Dinesh P Asati, Vaibhav Ingle, Deepti Joshi, Anurag Tiwari
Subcutaneous panniculitis-like T-cell lymphoma (SPTCL; α/β T-cell subtype) is a distinct variantof cutaneous T-cell lymphomas, which presents as inflammatory subcutaneous nodules. A 17-year-old male presented with recurrent fever with concomitant facial swelling, pedal edema, hepatosplenomegaly, and mildly tender subcutaneous plaques in generalized distribution along with patches of scarring alopecia on scalp. There were features of macrophage activation syndrome in the form of hemophagocytosis in the bone marrow, pancytopenia, high serum lactate dehydrogenase levels, low fibrinogen clotting activity, prolonged activated prothrombine time (aPTT), increased serum ferritin, hypoalbuminemia, and hypertriglyceridemia...
November 2016: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/27984051/brain-endothelial-dysfunction-following-pyrithiamine-induced-thiamine-deficiency-in-the-rat
#17
Sumit Sarkar, Serguei Liachenko, Merle G Paule, John Bowyer, Joseph P Hanig
Prolonged vitamin B1 (thiamine) deficiency can lead to neurological disorders such as Wernicke's encephalopathy and Wernicke-Korsakoff Syndrome (WKS) in humans. These thiamine deficiency disorders have been attributed to vascular leakage, blood-brain barrier breakdown and neuronal loss in the diencephalon and brain stem. However, endothelial dysfunction following thiamine deficiency and its relationship to the phenomenon of neurodegeneration has not been clearly elucidated. The present study sought to begin to address this issue by evaluating vascular morphology and integrity in a pyrithiamine (PT)-induced rat model of thiamine deficiency...
October 28, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27983705/riboflavin-reduces-pro-inflammatory-activation-of-adipocyte-macrophage-co-culture-potential-application-of-vitamin-b2-enrichment-for-attenuation-of-insulin-resistance-and-metabolic-syndrome-development
#18
Agnieszka Irena Mazur-Bialy, Ewa Pocheć
Due to the progressive increase in the incidence of obese and overweight individuals, cardiometabolic syndrome has become a worldwide pandemic in recent years. Given the immunomodulatory properties of riboflavin, the current study was performed to investigate the potency of riboflavin in reducing obesity-related inflammation, which is the main cause of insulin resistance, diabetes mellitus 2 or arteriosclerosis. We determined whether pretreatment with a low dose of riboflavin (10.4-1000 nM) affected the pro-inflammatory activity of adipocyte-macrophage co-culture (3T3 L1-RAW 264...
December 15, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27959437/traditional-medicine-sobokchukeo%C3%A2-tang-modulates-the-inflammatory-response-in-adipocytes-and-macrophages
#19
Hoyoung Lee, Eun Hyoung Shim, Myeong Soo Lee, Chang-Seon Myung
Sobokchukeo-Tang (ST) is a well-known formula that is used for treating primary dysmenorrhea caused by blood stasis syndrome (BSS) in Korea and China. The current study investigated the anti‑inflammatory and anti‑adipogenesis effects of ST on adipocytes and macrophages. The anti‑inflammatory efficacy of ST was evaluated in RAW 264.7 cells and differentiated THP‑1 cells. To induce inflammation, the cells were treated with lipopolysaccharide (LPS; 1 µg/ml). Following the induction of inflammation, the levels of proinflammatory cytokines, interleukin‑6 (IL‑6) and tumor necrosis factor‑α (TNF‑α) in the cell supernatant were detected using enzyme‑linked immunosorbent assay...
January 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27942582/pentraxin-2-suppresses-c-jun-ap-1-signaling-to-inhibit-progressive-fibrotic-disease
#20
Naoki Nakagawa, Luke Barron, Ivan G Gomez, Bryce G Johnson, Allie M Roach, Sei Kameoka, Richard M Jack, Mark L Lupher, Sina A Gharib, Jeremy S Duffield
Pentraxin-2 (PTX-2), also known as serum amyloid P component (SAP/APCS), is a constitutive, antiinflammatory, innate immune plasma protein whose circulating level is decreased in chronic human fibrotic diseases. Here we show that recombinant human PTX-2 (rhPTX-2) retards progression of chronic kidney disease in Col4a3 mutant mice with Alport syndrome, reducing blood markers of kidney failure, enhancing lifespan by 20%, and improving histological signs of disease. Exogenously delivered rhPTX-2 was detected in macrophages but also in tubular epithelial cells, where it counteracted macrophage activation and was cytoprotective for the epithelium...
December 8, 2016: JCI Insight
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