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https://www.readbyqxmd.com/read/28821884/the-atopic-dermatitis-blood-signature-is-characterized-by-increases-in-inflammatory-and-cardiovascular-risk-proteins
#1
Patrick M Brunner, Mayte Suárez-Fariñas, Helen He, Kunal Malik, Huei-Chi Wen, Juana Gonzalez, Tom Chih-Chieh Chan, Yeriel Estrada, Xiuzhong Zheng, Saakshi Khattri, Nancy Dattola, James G Krueger, Emma Guttman-Yassky
Beyond classic "allergic"/atopic comorbidities, atopic dermatitis (AD) emerges as systemic disease with increased cardiovascular risk. To better define serum inflammatory and cardiovascular risk proteins, we used an OLINK high-throughput proteomic assay to analyze moderate-to-severe AD (n = 59) compared to psoriasis (n = 22) and healthy controls (n = 18). Compared to controls, 10 proteins were increased in serum of both diseases, including Th1 (IFN-γ, CXCL9, TNF-β) and Th17 (CCL20) markers. 48 proteins each were uniquely upregulated in AD and psoriasis...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821016/expression-of-interferon-inducible-chemokines-and-sleep-wake-changes-during-early-encephalitis-in-experimental-african-trypanosomiasis
#2
Claudia Laperchia, Chiara Tesoriero, Paul F Seke-Etet, Valentina La Verde, Valeria Colavito, Gigliola Grassi-Zucconi, Jean Rodgers, Paul Montague, Peter G E Kennedy, Marina Bentivoglio
BACKGROUND: Human African trypanosomiasis or sleeping sickness, caused by the parasite Trypanosoma brucei, leads to neuroinflammation and characteristic sleep/wake alterations. The relationship between the onset of these alterations and the development of neuroinflammation is of high translational relevance, but remains unclear. This study investigates the expression of interferon (IFN)-γ and IFN-inducible chemokine genes in the brain, and the levels of CXCL10 in the serum and cerebrospinal fluid prior to and during the encephalitic stage of trypanosome infection, and correlates these with sleep/wake changes in a rat model of the disease...
August 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28820405/antiphospholipid-syndrome-and-monocytes-new-aspects
#3
A Blbulyan, A Martirosyan, M Petrek, Z Navratilova, G Manukyan
After discovery of antiphospholipid syndrome (APS) our understanding of molecular mechanisms of living matter has become more sophisticated and on this way monocytes has become crucial player, particularly in pathogenesis of APS. Thrombotic and non-thrombotic complications of APS could be explained by monocytes' activation too. But mechanisms underlying their activation are poorly investigated. So we aimed to determine transcriptional activity of monocytes after exposing them to low concentrations of lipopolysaccharide (LPS) and LPS+ATP using comparative of RT-PCR...
July 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28820283/n-3-pufas-induce-inflammatory-tolerance-by-formation-of-keap1-containing-sqstm1-p62-bodies-and-activation-of-nfe2l2
#4
Jennifer Mildenberger, Ida Johansson, Ismail Sergin, Eli Kjøbli, Jan Kristian Damås, Babak Razani, Trude Helen Flo, Geir Bjørkøy
Inflammation is crucial in the defense against infections but must be tightly controlled to limit detrimental hyperactivation. Our diet influences inflammatory processes and omega-3 polyunsaturated fatty acids (n-3 PUFAs) have known anti-inflammatory effects. The balance of pro- and anti-inflammatory processes is coordinated by macrophages and macroautophagy/autophagy has recently emerged as a cellular process that dampens inflammation. Here we report that the n-3 PUFA docosahexaenoic acid (DHA) transiently induces cytosolic speckles of the autophagic receptor SQSTM1/p62 (sequestosome 1) (described as SQSTM1/p62-bodies) in macrophages...
August 18, 2017: Autophagy
https://www.readbyqxmd.com/read/28818099/biosemantics-guided-gene-expression-profiling-of-sj%C3%A3-gren-s-syndrome-a-comparative-analysis-with-systemic-lupus-erythematosus-and-rheumatoid-arthritis
#5
Nirav R Shah, Braxton D Noll, Craig B Stevens, Michael T Brennan, Farah B Mougeot, Jean-Luc C Mougeot
BACKGROUND: Sjögren's syndrome (SS) shares many clinical and pathological similarities with systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). These autoimmune diseases mostly affect women. In this study, concept profile analysis (CPA) and gene expression meta-analysis were used to identify genes potentially involved in SS pathogenesis. METHODS: Human genes associated with SS, SLE, and RA were identified using the CPA tool, Anni 2.1. The differential mRNA expression of genes common to SS and SLE (SS-SLE) was determined in female peripheral blood mononuclear cells (PBMCs) using NCBI-GEO2R...
August 17, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28811623/immune-dysregulation-in-patients-with-carpal-tunnel-syndrome
#6
Gila Moalem-Taylor, Benny Baharuddin, Barbara Bennett, Arun V Krishnan, William Huynh, Matthew C Kiernan, Cindy Shin-Yi Lin, Boaz Shulruf, Elizabeth Keoshkerian, Barbara Cameron, Andrew Lloyd
Peripheral immunity plays a key role in maintaining homeostasis and conferring crucial neuroprotective effects on the injured nervous system, while at the same time may contribute to increased vulnerability to neuropathic pain. Little is known about the reciprocal relationship between entrapment neuropathy and peripheral immunity. This study investigated immune profile in patients with carpal tunnel syndrome (CTS), the most prevalent entrapment neuropathy. All patients exhibited neurophysiological abnormalities in the median nerve, with the majority reporting neuropathic pain symptoms...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811492/interferon-alpha-treatment-rapidly-clears-hepatitis-e-virus-infection-in-humanized-mice
#7
Martijn D B van de Garde, Suzan D Pas, Gertine W van Oord, Lucio Gama, Youkyung Choi, Robert A de Man, Andre Boonstra, Thomas Vanwolleghem
Antiviral treatment options for chronic Hepatitis E Virus (HEV) infections are limited and immunological determinants of viral persistence remain largely unexplored. We studied the antiviral potency of pegylated interferon-α (pegIFNα) against HEV infections in humanized mice and modelled intrahepatic interferon stimulated gene (ISG) responses. Human gene expression levels in humanized mouse livers were analyzed by qPCR and Nanostring. Human CXCL10 was measured in mouse serum. HEV genotype 3 (gt3) infections were cleared from liver and feces within 8 pegIFNα doses in all mice and relapsed after a single pegIFNα injection in only half of treated animals...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810249/knockdown-of-cxcl10-inhibits-mesangial-cell-proliferation-in-murine-habu-nephritis-via-erk-signaling
#8
Jie Gao, Lingling Wu, Yong Wang, Shaoyuan Cui, Shuwei Duan, Zheyi Dong, Zhe Feng, Xiangmei Chen
BACKGROUND/AIMS: IFN-γ-inducible protein 10 (IP-10, CXCL10) has been widely demonstrated to be involved in chemotaxis, cell growth regulation and angiogenesis inhibition. It has been reported that CXCL10 expression is significantly increased in patients with MesPGN (Mesangial proliferative glomerulonephritis). However, the underlying mechanism of CXCL10 in MesPGN reminds unclear. METHODS: Wildtype (Cxcl10+/+) mice and Cxcl10-deficient (Cxcl10-/-) mice were used to generate a murine model of MesPGN...
August 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28807602/neutralization-of-interferon-%C3%AE-reverts-clinical-and-laboratory-features-in-a-mouse-model-of-macrophage-activation-syndrome
#9
Giusi Prencipe, Ivan Caiello, Antonia Pascarella, Alexei A Grom, Claudia Bracaglia, Laurence Chatel, Walter G Ferlin, Emiliano Marasco, Raffaele Strippoli, Cristina de Min, Fabrizio De Benedetti
BACKGROUND: The pathogenesis of macrophage activation syndrome (MAS) is not clearly understood: a large body of evidence supports the involvement of mechanisms similar to those implicated in primary hemophagocytic lymphohistiocytosis. OBJECTIVE: To investigate the pathogenic role of interferon-γ (IFNγ) and the therapeutic efficacy of IFNγ neutralization in an animal model of macrophage activation syndrome. METHODS: We used a MAS model established in mice transgenic for human interleukin-6 (IL-6TG) challenged with LPS (MAS mice)...
August 11, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28804446/induction-of-mir-155-after-brain-injury-promotes-type-1-interferon-and-has-a-neuroprotective-effect
#10
Emily B Harrison, Katy Emanuel, Benjamin G Lamberty, Brenda M Morsey, Min Li, Matthew L Kelso, Sowmya V Yelamanchili, Howard S Fox
Traumatic brain injury (TBI) produces profound and lasting neuroinflammation that has both beneficial and detrimental effects. Recent evidence has implicated microRNAs (miRNAs) in the regulation of inflammation both in the periphery and the CNS. We examined the expression of inflammation associated miRNAs in the context of TBI using a mouse controlled cortical impact (CCI) model and found increased levels of miR-21, miR-223 and miR-155 in the hippocampus after CCI. The expression of miR-155 was elevated 9-fold after CCI, an increase confirmed by in situ hybridization (ISH)...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28803133/predictive-value-of-multiple-cytokines-and-chemokines-for-mortality-in-an-admixed-population-15-year-follow-up-of-the-bambui-epigen-brazil-cohort-study-of-aging
#11
Maria Fernanda Lima-Costa, Juliana Vaz de Melo Mambrini, Karen Cecília de Lima Torres, Sérgio Viana Peixoto, Cesar de Oliveira, Eduardo Tarazona-Santos, Andréa Teixeira-Carvalho, Olindo Assis Martins-Filho
Inflammation, particularly elevated IL-6 serum levels, has been associated with increased mortality risk, mostly in Caucasians. The influence of genetic ethno-racial background on this association is unknown. We examined associations between baseline serum levels of Interleukin-6 (IL-6) and other cytokines (IL1-2, TNF, IL-10, and IL1β) and chemokines (CCL2, CCL5, CXCL8, CXCL9 and CXCL10) with 15-year mortality in 1,191 admixed Brazilians aged 60years and over. Elevated IL6 level (but not other biomarkers) was associated with increased risk of deaths with fully adjusted hazard ratios of 1...
August 9, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28794402/dec1-negatively-regulates-the-expression-of-cxcl10-and-ccl5-induced-by-poly-ic-in-normal-human-mesangial-cells
#12
Qiang Liu, Tadaatsu Imaizumi, Keishu Murakami, Hiroshi Tanaka, Yunyan Wu, Tadashi Yoshizawa, Satoko Morohashi, Hiroko Seino, Hiroshi Kijima
The functions of differentiated embryonic chondrocyte gene (DEC) 1, a basic helix-loop-helix (bHLH) transcription factor, have been reported to be associated with the regulation of mammalian circadian rhythms, differentiation of chondrocytes and skeletal muscles, apoptosis, hypoxia-induced reactions and epithelial mesenchymal transition. Our previous report showed that another bHLH transcription factor DEC2 constitutes a negative feedback loop in Toll-like receptor 3 (TLR3)/interferon (IFN)-β-mediated inflammatory responses in human mesangial cells...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28793883/cxcl9-a-promising-biomarker-in-the-diagnosis-of-chronic-q-fever
#13
Anne F M Jansen, Teske Schoffelen, Julien Textoris, Jean-Louis Mege, Marrigje Nabuurs-Franssen, Ruud P H Raijmakers, Mihai G Netea, Leo A B Joosten, Chantal P Bleeker-Rovers, Marcel van Deuren
BACKGROUND: In the aftermath of the largest Q fever outbreak in the world, diagnosing the potentially lethal complication chronic Q fever remains challenging. PCR, Coxiella burnetii IgG phase I antibodies, CRP and (18)F-FDG-PET/CT scan are used for diagnosis and monitoring in clinical practice. We aimed to identify and test biomarkers in order to improve discriminative power of the diagnostic tests and monitoring of chronic Q fever. METHODS: We performed a transcriptome analysis on C...
August 9, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28791126/investigation-of-sphingosine-kinase-1-in-interferon-responses-during-dengue-virus-infection
#14
Amanda L Aloia, Julie K Calvert, Jennifer N Clarke, Lorena T Davies, Karla J Helbig, Stuart M Pitson, Jillian M Carr
Dengue virus (DENV) regulates sphingosine kinase (SK)-1 activity and chemical inhibition of SK1 reduces DENV infection. In primary murine embryonic fibroblasts (pMEFs) lacking SK1 however, DENV infection is enhanced and this is associated with induction of normal levels of interferon beta (IFN-β) but reduced levels of IFN-stimulated genes (ISGs). We have further investigated this link between SK1 and type I IFN responses. DENV infection downregulates cell-surface IFN-alpha receptor (IFNAR)1 in both wild-type (WT) and SK1(-)(/-) pMEF, but, consistent with poor ISG responses, shows reduced induction of phosphorylated (p)-STAT1 and key IFN regulatory factors (IRF)1 and -7 in SK1(-/-) pMEF...
July 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28770666/the-influence-of-vitamin-d-on-m1-and-m2-macrophages-in-patients-with-crohn-s-disease
#15
Serge Dionne, Carl-Frederic Duchatelier, Ernest G Seidman
Defective bacterial clearance by macrophages plays an important role in Crohn's disease (CD). Phenotypes and functions of inflammatory M1 and anti-inflammatory M2 have not been studied in CD. Vitamin D supplementation reduces the severity of CD by unclear mechanisms. We studied macrophage characteristics in CD and controls and the effects of 1,25 vitamin D (1,25D). PBMC were isolated from CD patients and controls. M1 and M2 were generated by culturing of monocytes with GM-CSF and M-CSF, respectively. CD M1 and M2 showed normal phagocytosis and chemotaxis to CCL2 and fMLP...
August 2017: Innate Immunity
https://www.readbyqxmd.com/read/28767981/protection-mediated-by-chemokine-cxcl10-in-balb-c-mice-infected-by-leishmania-infantum
#16
Webertty Mayk Eufrásio Figueiredo, Sayonara de Melo Viana, Dorotheia Teixeira Alves, Priscila Valera Guerra, Zirlane Castelo Branco Coêlho, Helene Santos Barbosa, Maria Jania Teixeira
BACKGROUND: Visceral leishmaniasis (VL) caused by Leishmania infantum is characterised by the loss of the ability of the host to generate an effective immune response. Chemokines have a direct involvement in the pathogenesis of leishmaniasis, causing a rapid change in the expression of these molecules during infection by Leishmania. OBJECTIVES: Herein, it was investigated the role of CXCL10 in controlling infection by L. infantum. METHODS: RAW 264...
August 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28765008/microcystin-leucine-arginine-exhibits-immunomodulatory-roles-in-testicular-cells-resulting-in-orchitis
#17
Yabing Chen, Jing Wang, Qin Zhang, Zou Xiang, Dongmei Li, Xiaodong Han
Microcystin-leucine arginine (MC-LR) causes testicular inflammation and hinders spermatogenesis. However, the molecular mechanisms underlying the immune responses to MC-LR in the testis have not been elucidated in detail. In this study, we show that MC-LR induced immune responses in Sertoli cells (SC), germ cells (GC), and Leydig cells (LC) via activating phosphatidylinositol 3-kinase (PI3K)/AKT/nuclear factor kappa B (NF-κB), resulting in the production of pro-inflammatory cytokines and chemokines including tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), monocyte chemoattractant protein-1 (MCP-1), and chemokine (C-X-C motif) ligand 10 (CXCL10)...
July 29, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28762599/diversity-of-progesterone-action-on-lipopolysaccharide-induced-expression-changes-in-cultured-human-cervical-fibroblasts-according-to-inflammation-and-treatment-timing
#18
Yoshimitsu Kuwabara, Akira Katayama, Sachiko Kurihara, Marie Ito, Mirei Yonezawa, Nozomi Ouchi, Ryuhei Kurashina, Tomoko Ichikawa, Rintaro Sawa, Akihito Nakai, Hideo Orimo, Toshiyuki Takeshita
PROBLEM: The effectiveness of progesterone (P4) treatment for preventing preterm births is unclear. Its effects on the uterine cervix were tested using cultured human uterine cervical fibroblasts (UCFs). METHOD OF STUDY: UCFs were incubated with lipopolysaccharide (LPS) in the presence or absence of P4 under various conditions. mRNA was subjected to PCR arrays and real-time RT-PCR to assess IL-6, IL-8, IL-1beta, PTGS2, MMP-1, and CXCL10 expression. RESULTS: When exposed to a high-LPS concentration (2...
August 1, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28760986/pum1-is-a-biphasic-negative-regulator-of-innate-immunity-genes-by-suppressing-lgp2
#19
Yonghong Liu, Linlin Qu, Yuanyuan Liu, Bernard Roizman, Grace Guoying Zhou
PUM1 is an RNA binding protein shown to regulate the stability and function of mRNAs bearing a specific sequence. We report the following: (i) A key function of PUM1 is that of a repressor of key innate immunity genes by repressing the expression of LGP2. Thus, between 12 and 48 hours after transfection of human cells with siPUM1 RNA there was an initial (phase 1) upsurge of transcripts encoding LGP2, CXCL10, IL6, and PKR. This was followed 24 hours later (phase 2) by a significant accumulation of mRNAs encoding RIG-I, SP100, MDA5, IFIT1, PML, STING, and IFNβ...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28760971/cytokine-signature-associated-with-disease-severity-in-chronic-fatigue-syndrome-patients
#20
Jose G Montoya, Tyson H Holmes, Jill N Anderson, Holden T Maecker, Yael Rosenberg-Hasson, Ian J Valencia, Lily Chu, Jarred W Younger, Cristina M Tato, Mark M Davis
Although some signs of inflammation have been reported previously in patients with myalgic encephalomyelitis or chronic fatigue syndrome (ME/CFS), the data are limited and contradictory. High-throughput methods now allow us to interrogate the human immune system for multiple markers of inflammation at a scale that was not previously possible. To determine whether a signature of serum cytokines could be associated with ME/CFS and correlated with disease severity and fatigue duration, cytokines of 192 ME/CFS patients and 392 healthy controls were measured using a 51-multiplex array on a Luminex system...
July 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
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