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Immune dysregulation

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https://www.readbyqxmd.com/read/28938251/critical-illness-related-corticosteroid-insufficiency-circi-a-narrative-review-from-a-multispecialty-task-force-of-the-society-of-critical-care-medicine-sccm-and-the-european-society-of-intensive-care-medicine-esicm
#1
Djillali Annane, Stephen M Pastores, Wiebke Arlt, Robert A Balk, Albertus Beishuizen, Josef Briegel, Joseph Carcillo, Mirjam Christ-Crain, Mark S Cooper, Paul E Marik, Gianfranco Umberto Meduri, Keith M Olsen, Bram Rochwerg, Sophia C Rodgers, James A Russell, Greet Van den Berghe
OBJECTIVE: To provide a narrative review of the latest concepts and understanding of the pathophysiology of critical illness-related corticosteroid insufficiency (CIRCI). PARTICIPANTS: A multi-specialty task force of international experts in critical care medicine and endocrinology and members of the Society of Critical Care Medicine and the European Society of Intensive Care Medicine. DATA SOURCES: Medline, Database of Abstracts of Reviews of Effects (DARE), Cochrane Central Register of Controlled Trials (CENTRAL) and the Cochrane Database of Systematic Reviews...
September 21, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28938189/the-potent-suppressive-effect-of-%C3%AE-d-mannuronic-acid-m2000-on-molecular-expression-of-the-tlr-nf-kb-signaling-pathway-in-ankylosing-spondylitis-patients
#2
Maryam Roozbehkia, Mahdi Mahmoudi, Somaye Aletaha, Nima Rezaei, Mohammad Javad Fattahi, Fahimeh Jafarnezhad-Ansariha, Anis Barati, Abbas Mirshafiey
Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease characterized by the inflammation of sacroiliac joints and axial skeleton. A combination of genetic, environmental and immunological factors are involved in AS's pathogenesis. TLRs are type I transmembrane glycoproteins that play a crucial role in the innate immune responses against invading pathogens. Observational studies have demonstrated a possible association between TLR dysregulation and AS. The β-d-mannuronic acid (M2000), as a novel NSAID with immunosuppressive property, has shown an inhibitory effect on Toll-like receptor (TLR) 2, 4 signaling in HEK293 cells...
September 19, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28936910/modulation-of-the-gut-microbiota-a-focus-on-treatments-for-irritable-bowel-syndrome
#3
Lucinda A Harris, Noemi Baffy
Irritable bowel syndrome (IBS), which is characterized by recurrent abdominal pain and disordered bowel habits, is one of the most common functional bowel disorders. IBS is a substantial burden on both patient health-related quality of life and health care costs. Several pathophysiologic mechanisms have been postulated for the occurrence of IBS, including altered gastrointestinal motility, visceral hypersensitivity, changes in gut permeability, immune activation, gut-brain dysregulation, autonomic nervous system dysfunction, and changes in the gut microbiota...
September 22, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28936778/preferential-reduction-of-circulating-innate-lymphoid-cells-type-2-in-patients-with-common-variable-immunodeficiency-with-secondary-complications-is-part-of-a-broader-immune-dysregulation
#4
David Friedmann, Baerbel Keller, Ina Harder, Jonas Schupp, Yakup Tanriver, Susanne Unger, Klaus Warnatz
PURPOSE: Over a third of patients with common variable immunodeficiency (CVID) suffer from secondary complications like inflammatory organ disease, autoimmune manifestations, or lymphoproliferation contributing to increased morbidity and mortality in affected patients. Innate lymphoid cells (ILCs) have emerging roles in setting the milieu for physiological, but also pathological, immune responses and inflammation. We therefore sought to correlate the recently identified disturbed homeostasis of ILCs with alterations of the adaptive immune system in complex CVID patients (CVIDc)...
September 21, 2017: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/28936203/modulation-of-gut-microbiome-composition-and-function-in-experimental-colitis-treated-with-sulfasalazine
#5
Haihui Zheng, Mingyi Chen, Yuan Li, Yuanyuan Wang, Lin Wei, Ziqiong Liao, Mengxia Wang, Fangli Ma, Qiongfeng Liao, Zhiyong Xie
Inflammatory bowel disease (IBD) results from alterations in intestinal flora and the immune system. Sulfasalazine (SASP) is a sulfa antimicrobial used to treat IBD in clinic for years. However, how SASP affects gut microbes and its potential functions remains unclear. To investigate the relationships of SASP, IBD, and gut microbiome, we used 2,4,6-trinitrobenzenesulfonic acid (TNBS) to induce experimental colitis in rats, and analyzed the microbiota in the fecal samples, which come from the control group (treated with ethanol + saline), the model group (treated with TNBS-ethanol + saline) and the SASP group (treated with TNBS-ethanol + SASP), with 16S gene sequencing and followed up a subset sample using shotgun sequencing...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28935693/a-multidimensional-blood-stimulation-assay-reveals-immune-alterations-underlying-systemic-juvenile-idiopathic-arthritis
#6
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/28935667/upregulation-of-herv-k-is-linked-to-immunity-and-inflammation-in-pulmonary-arterial-hypertension
#7
Toshie Saito, Kazuya Miyagawa, Shih-Yu Chen, Rasa Tamosiuniene, Lingli Wang, Orr Sharp, Erik Samayoa, Daisuke Harada, Jan-Renier A J Moonen, Aiqin Cao, Pin-I Chen, Jan K Hennigs, Mingxia Gu, Caiyun G Li, Ryan D Leib, Dan Li, Christopher M Adams, Patricia A Del Rosario, Matthew A Bill, Francois Haddad, Jose G Montoya, William Robinson, Wendy J Fantl, Garry P Nolan, Roham T Zamanian, Mark R Nicolls, Charles Y Chiu, Maria E Ariza, Marlene Rabinovitch
Background -Immune dysregulation has been linked to occlusive vascular remodeling in pulmonary arterial hypertension (PAH) that is hereditary, idiopathic or associated with other conditions. Circulating autoantibodies, lung perivascular lymphoid tissue and elevated cytokines have been related to PAH pathogenesis but without clear understanding of how these abnormalities are initiated, perpetuated and connected in the progression of disease. We therefore set out to identify specific target antigens in PAH lung immune complexes as a starting point toward resolving these issues to better inform future application of immunomodulatory therapies...
September 21, 2017: Circulation
https://www.readbyqxmd.com/read/28933361/lysosomal-storage-disorders-and-malignancy
#8
REVIEW
Gregory M Pastores, Derralynn A Hughes
Lysosomal storage disorders (LSDs) are infrequent to rare conditions caused by mutations that lead to a disruption in the usual sequential degradation of macromolecules or their transit within the cell. Gaucher disease (GD), a lipidosis, is among the most common LSD, with an estimated incidence of 1 in 40,000 among the Caucasian, non-Jewish population. Studies have indicated an increased frequency of polyclonal and monoclonal gammopathy among patients with GD. It has been shown that two major sphingolipids that accumulate in GD, namely, β-glucosylceramide 22:0 (βGL1-22) and glucosylsphingosine (LGL1), can be recognized by a distinct subset of CD1d-restricted human and murine type II natural killer T (NKT) cells...
February 27, 2017: Diseases (Basel)
https://www.readbyqxmd.com/read/28933175/-hiv-infection-a-new-disease-of-internal-medicine
#9
Svatava Snopková
Modern antiretroviral treatment belongs to the greatest success of current medicine. HIV infection has gone from a death sentence to a manageable chronic disease which develops several decades. Thanks to treatment advances, people with HIV can and do live long and full lives. In the last two decades, the incidence AIDS defining illnesses have been dramatically reduced especially opportunistic infections and malignancies, whereas the role of non-infection comorbidities has risen than age-matched HIV uninfected adults...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28933059/function-and-dysfunction-of-adipose-tissue
#10
Paulo Matafome, Raquel Seiça
Adipose tissue is an endocrine organ which is responsible for postprandial uptake of glucose and fatty acids, consequently producing a broad range of adipokines controlling several physiological functions like appetite, insulin sensitivity and secretion, immunity, coagulation, and vascular tone, among others. Many aspects of adipose tissue pathophysiology in metabolic diseases have been described in the last years. Recent data suggest two main factors for adipose tissue dysfunction: accumulation of nonesterified fatty acids and their secondary products and hypoxia...
2017: Advances in Neurobiology
https://www.readbyqxmd.com/read/28932637/muc1-c-promotes-the-suppressive-immune-microenvironment-in-non-small-cell-lung-cancer
#11
Audrey Bouillez, Dennis Adeegbe, Caining Jin, Xiufeng Hu, Ashujit Tagde, Maroof Alam, Hasan Rajabi, Kwok-Kin Wong, Donald Kufe
The cancer immune microenvironment is of importance for the effectiveness of immunotherapy; however, its dysregulation is poorly understood. The MUC1-C oncoprotein is aberrantly overexpressed in non-small cell lung cancer (NSCLC) and has been linked to the induction of PD-L1. The present work investigated the effects of targeting MUC1-C in an immuno-competent MUC1 transgenic (MUC1.Tg) mouse model. We show that Lewis Lung Carcinoma cells expressing MUC1-C (LLC/MUC1) exhibit upregulation of PD-L1 and suppression of interferon-γ (IFN-γ)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28931762/emerging-therapies-for-acute-myeloid-leukemia-translating-biology-into-the-clinic
#12
REVIEW
Simon Kavanagh, Tracy Murphy, Arjun Law, Dana Yehudai, Jenny M Ho, Steve Chan, Aaron D Schimmer
Acute myeloid leukemia (AML) is an aggressive hematological malignancy with a poor outcome; overall survival is approximately 35% at two years and some subgroups have a less than 5% two-year survival. Recently, significant improvements have been made in our understanding of AML biology and genetics. These fundamental discoveries are now being translated into new therapies for this disease. This review will discuss recent advances in AML biology and the emerging treatments that are arising from biological studies...
September 21, 2017: JCI Insight
https://www.readbyqxmd.com/read/28931756/monocyte-dysregulation-and-systemic-inflammation-during-pediatric-falciparum-malaria
#13
Katherine R Dobbs, Paula Embury, John Vulule, Peter S Odada, Bruce A Rosa, Makedonka Mitreva, James W Kazura, Arlene E Dent
BACKGROUND: Inflammation and monocytes are thought to be important to human malaria pathogenesis. However, the relationship of inflammation and various monocyte functions to acute malaria, recovery from acute malaria, and asymptomatic parasitemia in endemic populations is poorly understood. METHODS: We evaluated plasma cytokine levels, monocyte subsets, monocyte functional responses, and monocyte inflammatory transcriptional profiles of 1- to 10-year-old Kenyan children at the time of presentation with acute uncomplicated malaria and at recovery 6 weeks later; these results were compared with analogous data from asymptomatic children and adults in the same community...
September 21, 2017: JCI Insight
https://www.readbyqxmd.com/read/28931546/a-new-paradigm-of-sodium-regulation-in-inflammation-and-hypertension
#14
Annet Kirabo
Dysregulation of sodium (Na(+)) balance is a major cause of hypertensive cardiovascular disease. The current dogma is that interstitial Na(+) readily equilibrates with plasma and that renal excretion and reabsorption is sufficient to regulate extracellular fluid volume and control blood pressure. These ideas have been recently challenged by the discovery that Na(+) accumulates in tissues without commensurate volume retention and activates immune cells, leading to hypertension and autoimmune disease. However, objections have been raised to this new paradigm, with some investigators concerned about where and how salt is stored in tissues...
September 20, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28930572/immune-response-to-systemic-inflammation-in-the-intestinal-microcirculation
#15
Taylor Thorburn, Maral Aali, Christian Lehmann
Systemic inflammation is characterized by acute or chronic dysregulation of the host immune response. The intestine plays an important role in systemic inflammation. Disturbances in the intestinal microcirculation due to infiltration of immune cells during systemic inflammation can increase bacterial translocation from the gut to the circulation and aggravate the pathological condition. Therefore, the intestinal microcirculation is relevant with respect to two aspects - as pathophysiological trigger and therapeutic target in systemic inflammation...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28928868/villi-specific-gene-expression-reveals-novel-prognostic-biomarkers-in-multiple-human-cancers
#16
Botao Zhang, Lin Feng, Honglin Guo, Hongxia Li, Yuanjing Wang, Kaitai Zhang, Xuexin Yu, Shujun Cheng
Despite many striking connections, the biological similarities between embryonic development and tumorigenesis have not been well explored. Development of the placental villi is a crucial process involving many cellular activities, including immunity, proliferation, and cell adhesion. In this study, we designed a strategy to identify the gene expression pattern of villi development and to explore the corresponding features in tumors. We discovered villi-specific genes that are highly expressed in the villus as opposed to the mature placenta and then measured the expression levels of these genes in tumors...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928730/fpr2-a-novel-promising-target-for-the-treatment-of-influenza
#17
REVIEW
Marie-Christine Alessi, Nicolas Cenac, Mustapha Si-Tahar, Béatrice Riteau
The Formyl-peptide receptor-2 (FPR2) is a seven transmembrane G protein-coupled receptor, which plays an important role in sensing of bacteria and modulation of immune responses. FPR2 is also used by viruses for their own profit. Annexin A1, one of the multiple ligands of FPR2, is incorporated in the budding virus membrane of influenza A viruses (IAV). Thereby, once IAV infect a host cell, FPR2 is activated. FPR2-signaling leads to an increase in viral replication, a dysregulation of the host immune response and a severe disease...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28925389/ptsd-blood-transcriptome-mega-analysis-shared-inflammatory-pathways-across-biological-sex-and-modes-of-trauma
#18
Michael S Breen, Daniel S Tylee, Adam X Maihofer, Thomas C Neylan, Divya Mehta, Elisabeth Binder, Sharon D Chandler, Jonathan L Hess, William S Kremen, Victoria B Risbrough, Christopher H Woelk, Dewleen G Baker, Caroline M Nievergelt, Ming T Tsuang, Joseph D Buxbaum, Stephen J Glatt
Transcriptome-wide screens of peripheral blood during the onset and development of posttraumatic stress disorder (PTSD) indicate widespread immune dysregulation. However, little is known as to whether biological sex and the type of traumatic event influence shared or distinct biological pathways in PTSD. We performed a combined analysis of five independent PTSD blood transcriptome studies covering seven types of trauma in 229 PTSD and 311 comparison individuals to synthesize the extant data. Analyses by trauma type revealed a clear pattern of PTSD gene expression signatures distinguishing interpersonal (IP)-related traumas from combat-related traumas...
September 19, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28923062/tissue-resident-stem-cell-activity-a-view-from-the-adult-drosophila-gastrointestinal-tract
#19
REVIEW
Qiang Liu, Li Hua Jin
The gastrointestinal tract serves as a fast-renewing model for unraveling the multifaceted molecular mechanisms underlying remarkably rapid cell renewal, which is exclusively fueled by a small number of long-lived stem cells and their progeny. Stem cell activity is the best-characterized aspect of mucosal homeostasis in mitotically active tissues, and the dysregulation of regenerative capacity is a hallmark of epithelial immune defects. This dysregulation is frequently associated with pathologies ranging from chronic enteritis to malignancies in humans...
September 18, 2017: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/28922472/mirna-506-promotes-primary-biliary-cholangitis-like-features-in-cholangiocytes-and-immune-activation
#20
Oihane Erice, Patricia Munoz-Garrido, Javier Vaquero, Maria J Perugorria, Maite G Fernandez-Barrena, Elena Saez, Alvaro Santos-Laso, Ander Arbelaiz, Raul Jimenez-Agüero, Joaquin Fernandez-Irigoyen, Enrique Santamaria, Verónica Torrano, Arkaitz Carracedo, Meenakshisundaram Ananthanarayanan, Marco Marzioni, Jesus Prieto, Ulrich Beuers, Ronald P Oude Elferink, Nicholas F LaRusso, Luis Bujanda, Jose J G Marin, Jesus M Banales
Primary biliary cholangitis (PBC) is a chronic cholestatic liver disease associated with autoimmune phenomena targeting intrahepatic bile duct cells (cholangiocytes). Although PBC etiopathogenesis still remains obscure, development of anti-mitochondrial auto-antibodies against pyruvate dehydrogenase complex-E2 (PDC-E2) is a common feature. MicroRNA (miR) dysregulation occurs in liver and immune cells of PBC patients, but their functional relevance is largely unknown. We previously reported that miR-506 is overexpressed in PBC cholangiocytes and directly targets both Cl(-) /HCO3(-) anion exchanger 2 (AE2) and type III inositol 1,4,5-trisphosphate receptor (InsP3R3), leading to cholestasis...
September 18, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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