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Clinical and Experimental Immunology

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https://www.readbyqxmd.com/read/29746703/s100a8-a9-promotes-parenchymal-damage-and-renal-fibrosis-in-obstructive-nephropathy
#1
Alessandra Tammaro, Sandrine Florquin, Mascha Brok, Nike Claessen, Loes M Butter, Gwendoline J D Teske, Onno J de Boer, Thomas Vogl, Jaklien C Leemans, Mark C Dessing
Despite advances in our understanding of the mechanisms underlying progression of chronic kidney disease and the development of fibrosis, only limited efficacious therapies exist. The calcium binding protein S100A8/A9, is a damage-associated molecular pattern which can activate TLR4 or RAGE. Activation of these receptors is involved in the progression of renal fibrosis, however the role of S100A8/A9 herein remains unknown. Therefore, we analyzed S100A8/A9 expression in patients and mice with obstructive nephropathy and subjected wild-type and S100A9 KO mice lacking the heterodimer S100A8/A9 to Unilateral Ureteral Obstruction (UUO)...
May 10, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29745428/he4-suppresses-the-expression-of-osteopontin-in-mononuclear-cells-and-compromises-their-cytotoxicity-against-ovarian-cancer-cells
#2
Nicole E James, Evelyn Cantillo, Matthew T Oliver, Rachael B Rowswell-Turner, Jennifer R Ribeiro, Kyu-Kwang Kim, Clinton O Chichester, Paul A DiSilvestro, Richard G Moore, Rakesh K Singh, Naohiro Yano, Ting C Zhao
Ovarian cancers are known to evade immunosurveillance and to orchestrate a suppressive immune microenvironment. Here we examine the role of human epididymis protein 4 (HE4), an ovarian cancer biomarker, in immune evasion. Through modified subtractive hybridization analyses we have characterized the gene targets of HE4 in human peripheral blood mononuclear cells (PBMCs), and established a preliminary mechanism for HE4-mediated immune failure in ovarian tumors. Upon exposure of purified PMBCs to HE4, osteopontin (OPN) and DUSP6 emerged as the most suppressed and upregulated genes respectively...
May 10, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29745420/bcl-2-levels-do-not-predict-azathioprine-treatment-response-in-inflammatory-bowel-disease-but-inhibition-induces-lymphocyte-apoptosis-and-ameliorates-colitis-in-mice
#3
Bruce Weder, Mahdi Mozaffari, Luc Biedermann, Céline Mamie, Anja Moncsek, Lichun Wang, Stephen H Clarke, Gerhard Rogler, Bradford L McRae, Candace L Graff, Pedro A Ruiz, Martin Hausmann
INTRODUCTION: In inflammatory bowel disease (IBD), inflammation is sustained by an exaggerated response of lymphocytes. This results from enhanced expression of anti-apoptotic BCL-2 and BCL-XL associated with a diminished turnover. Azathioprine (AZA) directly targets BCL-2 family-mediated apoptosis. We investigated whether the BCL-2 family expression pattern could be used to predict treatment response to AZA and determined whether BCL-2 inhibitor A-1211212 effectively diminishes lymphocytes and ameliorates inflammation in a model of colitis...
May 10, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29737525/cytomegalovirus-an-unlikely-ally-in-the-fight-against-blood-cancers
#4
Austin B Bigley, Forrest L Baker, Richard J Simpson
CMV infection is a potentially fatal complication in patients receiving HSCT, but recent evidence indicates that CMV has strong anti-leukemia effects due in part to shifts in the composition of NK-cell subsets. NK-cells are the primary mediators of the anti-leukemia effect of allogeneic HSCT and infusion of allogeneic NK-cells has shown promise as a means of inducing remission and preventing relapse of several different hematologic malignancies. The effectiveness of these treatments is limited, however, when tumors express HLA-E, a ligand for the inhibitory receptor NKG2A which is expressed by the vast majority of post-transplant reconstituted and ex vivo expanded NK-cells...
May 8, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29729109/stroma-the-forgotten-cells-of-innate-immune-memory
#5
REVIEW
Thomas Crowley, Christopher D Buckley, Andrew R Clark
All organisms are constantly exposed to a variety of infectious and injurious stimuli. These induce inflammatory responses tailored to the threat posed. Whilst the innate immune system is the front line of response to each stimulant, it has been traditionally considered to lack memory, acting in a generic fashion until the adaptive immune arm can take over. This outmoded simplification of the roles of innate and acquired arms of the immune system has been challenged by evidence of myeloid cells altering their response to subsequent encounters based on earlier exposure...
May 5, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29722896/cerebrospinal-fluid-findings-in-reversible-cerebral-vasoconstriction-syndrome-a-way-to-differentiate-from-cerebral-vasculitis
#6
Laura Kraayvanger, Peter Berlit, Philipp Albrecht, Hans-Peter Hartung, Markus Kraemer
INTRODUCTION: Reversible Cerebral Vasoconstriction Syndrome (RCVS) is characterized by an acute onset of severe headache and multifocal segmental vasoconstriction of cerebral arteries resolving within twelve weeks. Diagnostic criteria include normal or near-normal findings in cerebrospinal fluid (CSF) analysis, especially leukocyte levels < 10/mm³. Distinguishing RCVS from primary angiitis of the central nervous system (PACNS) is essential to avoid unnecessary and sometimes unfavorable immunosuppressive treatment...
May 3, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29704464/administration-of-activated-lymphocyte-derived-dna-accelerates-and-aggravates-lupus-nephritis-in-b6-lpr-mice-a-new-approach-to-modify-a-lupus-murine-model
#7
Yuanyuan Zhu, Yan Yue, Sidong Xiong
B6/lpr mouse strain is a well-known systemic lupus erythematosus murine model characterized by uncontrolled lymphoproliferation and autoantibody production. However, it displays a delayed and mild development of lupus nephritis (LN), which is not conducive to the research of the pathogenesis and therapeutic strategies of this condition. Our previous study demonstrated that activated lymphocyte-derived DNA (ALD-DNA) could induce high urine protein levels and severe glomerulonephritis (GN) in BALB/c mice. In the present study, we tried to remedy delayed urine protein production and mild GN in B6/lpr mice via ALD-DNA immunization...
April 28, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29704458/gm-csf-and-il-4-are-not-involved-in-ivig-mediated-amelioration-of-itp-in-mice-a-role-for-il-11-cannot-be-ruled-out
#8
Bonnie J B Lewis, Danila Leontyev, Anton Neschadim, Megan Blacquiere, Donald R Branch
Previously, we reported that interleukin 4 (IL-4), granulocyte-macrophage colony-stimulating factor (GM-CSF), and interleukin 11 (IL-11), but not interleukin 33 (IL-33), are up-regulated in two strains of mice with immune thrombocytopenia (ITP) that are responsive to intravenous immunoglobulin (IVIg) treatment. Previously, IL-4 was ruled out in the mechanism of IVIg; however, other publications have suggested this cytokine as a major player in the mechanism of IVIg action. Thus, we sought to further investigate a role for IL-4 and, in addition, GM-CSF and IL-11 in the mechanism of action of IVIg using a murine model of ITP...
April 28, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29698559/tuftsin-phosphorylcholine-tpc-equally-effective-to-methylprednisolone-in-ameliorating-lupus-nephritis-in-a-mice-model
#9
Asaf Shemer, Shay Kivity, Ora Shovman, Ori Perry, Abdulla Watad, Dana Ben-Ami Shor, Alex Volkov, Iris Barshack, Nicola L Bragazzi, Alexander Krule, Mati Fridkin, Howard Amital, Miri Blank, Yehuda Shoenfeld
BACKGROUND: The role of helminth treatment in autoimmune diseases is constantly growing. Systemic lupus erythematosus (SLE) is a multi-system autoimmune disease with challenging treatment options. Tuftsin phosphorylcholine (TPC) is a novel helminth-based compound that modulates the host immune network. OBJECTIVES: This study was conducted to evaluate the potential value of TPC in ameliorating lupus nephritis in a murine model and specifically to compare the efficacy of TPC to the existing first-line therapy for SLE: corticosteroids (methylprednisolone)...
April 26, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29688572/enhanced-expression-of-ifi16-and-rig-i-in-human-third-trimester-placentas-following-hsv-1-infection
#10
Agnieszka Jabłońska, Mirosława Studzińska, Patrycja Suski, Jarosław Kalinka, Edyta Paradowska
The innate immune response in the placenta depends on the ability of maternal immune cells and fetal trophoblast cells to detect and eliminate invading pathogens through germline-encoded pattern recognition receptors (PRRs). In the present study, we analyzed the transcripts and protein expression of IFI16, MDA5, RIG-I, and TLR3 in third-trimester human placentas and investigated cytokine profiles generated during herpes simplex type 1 (HSV-1) infection. Decidual and chorionic villous biopsies (38-42 week of gestation) were obtained from healthy women immediately after a cesarean section...
April 24, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29683202/placental-inflammation-in-pre-eclampsia-by-nod-like-receptor-protein-nlrp-3-inflammasome-activation-in-trophoblasts
#11
G S Stødle, G B Silva, L H Tangerås, L M Gierman, I Nervik, U E Dahlberg, C Sun, M H Aune, L C V Thomsen, L Bjørge, A-C Iversen
Pre-eclampsia is associated with increased levels of cholesterol and uric acid and an inflamed placenta expressing danger-sensing pattern recognition receptors (PRRs). Crystalline cholesterol and uric acid activate the PRR Nod-like receptor protein (NLRP)3 inflammasome to release interleukin (IL)-1β and result in vigorous inflammation. We aimed to characterize crystal-induced NLRP3 activation in placental inflammation and examine its role in pre-eclampsia. We confirmed that serum total cholesterol and uric acid were elevated in pre-eclamptic compared to healthy pregnancies and correlated positively to high sensitivity C-reactive protein (hsCRP) and the pre-eclampsia marker soluble fms-like tyrosine kinase-1 (sFlt-1)...
April 23, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29679490/increased-nk-cell-subsets-with-inhibitory-cytokines-and-inhibitory-surface-receptors-in-patients-with-recurrent-miscarriage-and-decreased-or-normal-subsets-in-kidney-transplant-recipients-late-post-transplant
#12
Li Zhu, Mostafa Aly, Haihao Wang, Hristos Karakizlis, Rolf Weimer, Christian Morath, Ruben Jeremias Kuon, Bettina Toth, Naruemol Ekpoom, Gerhard Opelz, Volker Daniel
BACKGROUND: Patients with recurrent miscarriage (RM) show up-regulated cytotoxic NK cells that are suspected to play a causal role in abortion. In the present study, we investigated counter-regulating inhibitory mechanisms and compared the results in RM patients with those of healthy controls (HC), patients with end stage renal disease (ESRD) and kidney transplant recipients late post-transplant (TX). METHODS: NK, NKT and T cell subsets were analyzed in the peripheral blood of 31 RM, 14 female ESRD and 9 female TX patients as well as 21 female HC using eight-color fluorescence flow cytometry...
April 21, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29676779/synergistic-effect-of-interleukin-17-and-tumor-necrosis-factor-%C3%AE-on-inflammatory-response-in-hepatocytes-through-interleukin-6-dependent-and-independent-pathways
#13
Audrey Beringer, Ndieme Thiam, Jennifer Molle, Birke Bartosch, Pierre Miossec
The pro-inflammatory cytokines IL-17 and TNFα are targets for treatment in many chronic inflammatory diseases. Here, we examined their role in liver inflammatory response compared to that of IL-6. Human hepatoma cells (HepaRG, Huh7.5 and HepG2 cells) and primary human hepatocytes (PHH) were cultured with IL-6, IL-17 and/or TNFα. To determine the contribution of the IL-6 pathway in the IL-17/TNFα-mediated effect, an anti-IL-6 receptor antibody was used. IL-17 and TNFα increased in synergy IL-6 secretion by HepaRG cells and PHH but not by Huh7...
April 20, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29676778/indirect-co-cultures-of-healthy-mesenchymal-stem-cells-restore-the-physiological-phenotypic-profile-of-psoriatic-mesenchymal-stem-cells
#14
A Campanati, M Orciani, G Sorgentoni, V Consales, M Mattioli Belmonte, R Di Primio, A Offidani
Psoriasis microenvironment, characterized by an imbalance between Th1/Th17 and Th2 cytokines, influences also mesenchymal stem cells (MSCs) phenotypic profile. MSCs from healthy donors (H-MSCs) can exert a strong paracrine effect by secreting active soluble factors, able to modulate the inflammation in the microenvironment. To evaluate the influence of H-MSCs on MSCs from psoriatic patients (PsO-MSCs), H-MSCs and PsO-MSCs were isolated and characterized. Indirect co-culture of H-MSCs with PsO-MSCs was performed; effects on proliferation and expression of cytokines linked to Th1/Th17 and Th2 pathways were assayed before and after co-culture...
April 20, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29665000/increased-killer-b-cells-in-chronic-hcv-infection-may-lead-to-autoimmunity-and-increased-viral-load
#15
Nasren Eiza, Eli Zuckerman, Matthias Carlebach, Tova Rainis, Yair Goldberg, Zahava Vadasz
BACKGROUND: B regulatory (Breg) cells are characterized by various membrane markers, and the secretion of different inhibitory cytokines. A new subset of Breg cells was identified as CD5hi Fas-ligand (FasL)hi. Their main reported role is to suppress anti-viral and anti-tumor immune responses and hence, they have been dubbed "killer" B cells. In this study, we aim to assess the role of these cells in chronic hepatitis C virus (HCV) infection, and determine if they contribute to the increased viral load and persistence of HCV and its related autoimmunity...
April 17, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29663334/the-rheumatic-disease-associated-fam167a-blk-locus-encodes-diora-1-a-novel-disordered-protein-highly-expressed-in-bronchial-epithelium-and-alveolar-macrophages
#16
Lara Mentlein, Gudny Ella Thorlacius, Lauro Meneghel, Lara A Aqrawi, Jorge I Ramírez Sepúlveda, Johan Grunewald, Alexander Espinosa, Marie Wahren-Herlenius
OBJECTIVES: Triggering of autoimmunity that leads to rheumatic disease has been suggested to depend on gene-environment interactions occurring in epithelial barriers and associated immune cells. Genetic studies have identified associations of the FAM167A-BLK locus with rheumatoid arthritis, SLE, and Sjögren's syndrome. While BLK (B lymphocyte kinase) has a well-established role in B cells, family with sequence similarity 167 member A (FAM167A) and its gene family remain uncharacterized...
April 17, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29660112/evaluation-of-membrane-bound-and-soluble-forms-of-hla-g-in-systemic-sclerosis
#17
Paola Contini, Simone Negrini, Giuseppe Murdaca, Matteo Borro, Francesco Puppo
Systemic sclerosis (SSc) is a complex disease characterized by immune dysregulation, extensive vascular damage and wide-spread fibrosis. Human leukocyte antigen-G (HLA-G) is a non-classic class I major histocompatibility complex (MHC) molecule characterized by complex immuno-modulating properties. HLA-G is expressed on the membrane of different cell lineages in both physiological and pathological conditions. HLA-G is also detectable in soluble form (sHLA-G) deriving from the shedding of surface isoforms (sHLA-G1) or the secretion of soluble isoforms (HLA-G5)...
April 16, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29645082/soluble-st2-sst2-regulation-by-rhinovirus-rv-and-25-oh-vitamin-d3-in-the-blood-of-asthmatic-children
#18
Patricia Haag, Himanshu Sharma, Manfred Rauh, Theodor Zimmermann, Tytti Vuorinen, Nikolaos G Papadopoulos, Scott T Weiss, Susetta Finotto
Paediatric asthma exacerbations are often caused by Rhinovirus (RV). Moreover, 25(OH)-Vitamin D3 (=25(OH) VitD3) deficiency during infancy was found associated with asthma. Here, we investigated the innate immune responses to RV and their possible modulation by 25(OH) VitD3 serum levels in a preschool cohort of children with and without asthma. The innate lymphoid cell type 2 (ILC2)-associated marker, ST2 was found upregulated in the blood cells of asthmatic children with low serum levels of 25(OH)VitD3 in the absence of RV in their airways...
April 12, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29645079/antinuclear-antibodies-in-patients-with-breast-cancer
#19
Renato Nisihara, Mariana C C Machoski, Aline Neppel, Carlos A Maestri, Iara Messias-Reason, Thelma L Skare
PURPOSE: To study the prevalence of ANA in breast cancer patients and its association with tumor characteristics. METHODS: Ninety one patients with breast mass detected by image studies and assigned to do diagnostic biopsy and eventual surgical treatment were studied for demographical, tumor data and presence of ANA. Serum of positive ANA patients was screened for ENA (extractable nuclear antigens) profile. As comparison, 91 healthy individuals matched for age and from same geographical area were included...
April 12, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29603203/association-of-interleukin-22-gene-polymorphisms-and-serum-il-22-level-with-risk-of-systemic-lupus-erythematosus-in-a-chinese-population
#20
Rong Wang, Yong-Long Zeng, Hai-Mei Qin, Yu-Lan Lu, Hua-Tuo Huang, Ming Lei, Tan Tan, Yan-Yun Huang, Hong-Cheng Luo, Yan Lan, Ye-Sheng Wei
The aim of this study was to investigate the association between the single-nucleotide polymorphisms (SNPs) of interleukin 22 (IL-22) gene and systemic lupus erythematosus (SLE) in a Chinese population. Three IL-22 SNPs (rs2227485, rs2227513 and rs2227491) were genotyped using Snapshot SNP genotyping assays and identified by sequencing in 314 SLE patients and 411 healthy controls. IL-22 level of serum was assessed by enzyme-linked immunosorbent assay (ELISA) kits. Data were analyzed by SPSS 17.0 software. We found that rs2227513 was associated with an increased risk of SLE (AG vs...
March 30, 2018: Clinical and Experimental Immunology
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