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https://www.readbyqxmd.com/read/28916896/involvement-of-il-17-in-secondary-brain-injury-after-a-traumatic-brain-injury-in-rats
#1
Tan Li, Yong-Mei Zhang, Dong Han, Rong Hua, Bing-Nan Guo, Shu-Qun Hu, Xian-Liang Yan, Tie Xu
The pro-inflammatory activity of interleukin 17, which is produced by the IL-23/IL-17 axis, has been associated with the pathogenesis of traumatic brain injury (TBI). The study investigated the potential role of IL-17 in secondary brain injury of TBI in a rat model. Our data showed that the levels of IL-17 increased from 6 h to 7 days and peaked at 3 days, in both the CNS and serum, which were consistent with the severity of secondary brain injury. The IL-23 inhibitor suberoylanilide hydroxamic acid (SAHA) treatment markedly decreased the expressions of IL-17 and apoptosis-associated proteins cleaved caspase-3 and increased the protein ratio of Bcl-2 (B cell lymphoma/leukemia-2)/Bax (Bcl-2-associated X protein)...
September 15, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/28912779/v%C3%AE-4-%C3%AE-%C3%AE-t-cells-aggravate-severe-h1n1-influenza-virus-infection-induced-acute-pulmonary-immunopathological-injury-via-secreting-interleukin-17a
#2
Chunxue Xue, Mingjie Wen, Linlin Bao, Hui Li, Fengdi Li, Meng Liu, Qi Lv, Yunqing An, Xulong Zhang, Bin Cao
The influenza A (H1N1) pdm09 virus remains a critical global health concern and causes high levels of morbidity and mortality. Severe acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are the major outcomes among severely infected patients. Our previous study found that interleukin (IL)-17A production by humans or mice infected with influenza A (H1N1) pdm09 substantially contributes to ALI and subsequent morbidity and mortality. However, the cell types responsible for IL-17A production during the early stage of severe influenza A (H1N1) pdm09 infection remained unknown...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28911642/lactobacillus-pentosus-gmnl-77-inhibits-skin-lesions-in%C3%A2-imiquimod-induced-psoriasis-like-mice
#3
Yi-Hsing Chen, Chieh-Shan Wu, Ya-Husan Chao, Chi-Chen Lin, Hui-Yun Tsai, Yi-Rong Li, Yi-Zhen Chen, Wan-Hua Tsai, Yu-Kuo Chen
Psoriasis, which is regarded as a T-cell-mediated chronic inflammatory skin disease, is characterized by hyperproliferation and poor differentiation of epidermal keratinocytes. In this study, we aimed to determine the in vivo effect of a potentially probiotic strain, Lactobacillus pentosus GMNL-77, in imiquimod-induced epidermal hyperplasia and psoriasis-like skin inflammation in BALB/c mice. Oral administration of L. pentosus GMNL-77 significantly decreased erythematous scaling lesions. Real-time polymerase chain reaction showed that treatment with L...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28902929/women-with-recurrent-spontaneous-abortion-have-decreased-25-oh-vitamin-d-and-vdr-at-the-fetal-maternal-interface
#4
N Li, H M Wu, F Hang, Y S Zhang, M J Li
Immunological mechanisms have been proposed to underlie the pathogenesis of recurrent spontaneous abortion (RSA). Vitamin D has a potent immunomodulatory effect, which may affect pregnancy outcome. The objective of this study was to investigate 25-hydroxyvitamin D [25(OH) D] concentration and vitamin D receptor (VDR) expression in the decidual tissues of RSA patients. Thirty women with RSA (RSA group) and thirty women undergoing elective abortion (control group) were recruited during 2016 from gynecology outpatient clinics...
September 12, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28902840/maternal-gut-bacteria-promote-neurodevelopmental-abnormalities-in-mouse-offspring
#5
Sangdoo Kim, Hyunju Kim, Yeong Shin Yim, Soyoung Ha, Koji Atarashi, Tze Guan Tan, Randy S Longman, Kenya Honda, Dan R Littman, Gloria B Choi, Jun R Huh
Maternal immune activation (MIA) contributes to behavioural abnormalities associated with neurodevelopmental disorders in both primate and rodent offspring. In humans, epidemiological studies suggest that exposure of fetuses to maternal inflammation increases the likelihood of developing autism spectrum disorder. In pregnant mice, interleukin-17a (IL-17a) produced by T helper 17 (TH17) cells (CD4(+) T helper effector cells involved in multiple inflammatory conditions) induces behavioural and cortical abnormalities in the offspring exposed to MIA...
September 13, 2017: Nature
https://www.readbyqxmd.com/read/28900461/effects-of-wannachawee-recipe-with-antipsoriatic-activity-on-suppressing-inflammatory-cytokine-production-in-hacat-human-keratinocytes
#6
Mingkwan Na Takuathung, Ariyaphong Wongnoppavich, Pornsiri Pitchakarn, Ampai Panthong, Parirat Khonsung, Natthakarn Chiranthanut, Noppamas Soonthornchareonnon, Seewaboon Sireeratawong
Psoriasis is a chronic inflammatory and immune-mediated skin disease. The pathogenesis involves T cells activation via the IL-23/Th17 axis. Conventional treatments of psoriasis have adverse events influencing patients' adherence. Wannachawee Recipe (WCR) has been effectively used as Thai folk remedy for psoriasis patients; however, preclinical evidence defining how WCR works is still lacking. This study defined mechanisms for its antiproliferation and anti-inflammatory effects in HaCaT cells. The cytotoxicity and antiproliferation results from SRB and CCK-8 assays showed that WCR inhibited the growth and viability of HaCaT cells in a concentration-dependent manner...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28899907/a-novel-function-of-cxcl10-in-mediating-monocyte-production-of-proinflammatory-cytokines
#7
Qihong Zhao, Taeg Kim, Jian Pang, Wendy Sun, Xiaoxia Yang, Jinhong Wang, Yunling Song, Hongwei Zhang, Huadong Sun, Vangipuram Rangan, Shrikant Deshpande, Huaping Tang, Mary Ellen Cvijic, Richard Westhouse, Timothy Olah, Jenny Xie, Mary Struthers, Luisa Salter-Cid
IFN-γ-inducible protein 10 (CXCL10), a chemokine that is abundantly secreted in response to inflammatory stimuli, has been implicated in the pathogenesis of multiple inflammatory diseases, such as inflammatory bowel disease. Whereas CXCL10 is traditionally recognized for recruiting pathogenic T cells to inflamed sites, its nonchemotactic role during inflammation remains poorly defined. In this report, we identified a novel function of CXCL10 in the regulation of the inflammatory potential of human monocytes to produce cytokines...
September 12, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28899359/transcript-profiling-of-the-immunological-interactions-between-actinobacillus-pleuropneumoniae-serotype-7-and-the-host-by-dual-rna-seq
#8
Ping Li, Zhiwen Xu, Xiangang Sun, Yue Yin, Yi Fan, Jun Zhao, Xiyu Mao, Jianbo Huang, Fan Yang, Ling Zhu
BACKGROUND: The complexity of the pathogenic mechanism underlying the host immune response to Actinobacillus pleuropneumonia (App) makes the use of preventive measures difficult, and a more global view of the host-pathogen interactions and new insights into this process are urgently needed to reveal the pathogenic and immune mechanisms underlying App infection. Here, we infected specific pathogen-free Mus musculus with App serotype 7 by intranasal inoculation to construct an acute hemorrhagic pneumonia infection model and isolated the infected lungs for analysis of the interactions by dual RNA-seq...
September 12, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28898718/interleukin-17-regulates-shp-2-and-il-17ra-stat-3-dependent-cyr61-il-23-and-gm-csf-expression-and-rankl-mediated-osteoclastogenesis-by-fibroblast-like-synoviocytes-in-rheumatoid-arthritis
#9
Ramamoorthi Ganesan, Mahaboobkhan Rasool
Interleukin (IL)-17 predominately produced by the Th17 cells, plays a crucial role in the fibroblast-like synoviocytes (FLS) mediated disease process of rheumatoid arthritis (RA). IL-17 exerts its pathogenic effects in RA-FLS by IL-17/IL-17RA/STAT-3 signaling. Recent studies have shown that RA-FLS produces SHP-2, Cyr61, IL-23, GM-CSF and RANKL which results in worsening of the disease. However, whether IL-17/IL-17RA/STAT-3 signaling regulates SHP-2, Cyr61, IL-23, GM-CSF and RANKL expressions in RA-FLS remains unknown...
September 9, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28898221/go-ahead-for-first-anti-il-23-mab-to-treat-psoriasis
#10
(no author information available yet)
No abstract text is available yet for this article.
September 11, 2017: Nature Biotechnology
https://www.readbyqxmd.com/read/28895120/inflammation-treatment-progress-and-limitations
#11
EDITORIAL
Ingolf Cascorbi
There is an increasing understanding on the etiology of chronic immune-mediated inflammatory diseases such as inflammatory bowel disease (IBD), psoriasis, or rheumatoid arthritis. Large consortia contributed to the elucidation of the genetics, for instance, of IBD identifying a number of genes involved in innate mucosal defense and immune tolerance (most prominent, e.g., NOD2) and other related processes. For a number of such diseases, common genetic susceptibility loci were identified, suggesting overlapping immune response pathways, although there is no causality of single genetic traits...
October 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28890543/the-altered-pd-1-pd-l1-pathway-delivers-the-one-two-punch-effects-to-promote-the-treg-th17-imbalance-in-pre-eclampsia
#12
Yonghong Zhang, Zhaozhao Liu, Mei Tian, Xiaohui Hu, Liling Wang, Jinlu Ji, Aihua Liao
The programmed cell death-1 (PD-1)/PD-ligand 1 (PD-L1) pathway is critical for normal pregnancy by promoting regulatory T (Treg) cell development and inhibiting the Th17 response. However, the relationship between the PD-1/PD-L1 pathway and the Treg/Th17 imbalance in pre-eclampsia (PE) is an enigma. In this study, decreased PD-1 and PD-L1 expression and a Treg/Th17 imbalance were observed at the maternal-fetal interface in PE. The regulatory effects of the PD-1/PD-L1 pathway on the Treg and Th17 cell quantities were determined in vitro by targeting T-cell proliferation, differentiation and transdifferentiation...
September 11, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28888782/tnfaip3-levels-in-lung-dendritic-cells-instruct-th2-or-th17-cell-differentiation-in-eosinophilic-or-neutrophilic-asthma
#13
Heleen Vroman, Ingird M Bergen, Jennifer A C van Hulst, Memno van Nimwegen, Denise van Uden, Martin J Schuijs, Saravanan Y Pillai, Geert van Loo, Hamida Hammad, Bart N Lambrecht, Rudi W Hendriks, Mirjam Kool
BACKGROUND: It is currently unknown, why allergen exposure or environmental triggers in mild to moderate asthma patients results in Th2-mediated eosinophilic inflammation, whereas severe asthma patients often present with Th17-mediated neutrophilic inflammation. The activation state of dendritic cells (DCs) is crucial for both Th2 and Th17-cell differentiation, and is mediated through NF-κB activation. Ablation of TNFAIP3, one of the crucial negative regulators of NF-κB activation in myeloid cells and DCs was shown to control DC activation...
September 6, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28888763/mir-155-targets-est-1-and-induces-ulcerative-colitis-via-the-il-23-17-6-mediated-th17-pathway
#14
Jiangtao Hou, Xueying Hu, Bin Chen, Xu Chen, Lina Zhao, Zhuoqun Chen, Fengbin Liu, Zhihui Liu
BACKGROUND: Ulcerative colitis (UC) is a type of inflammatory bowel disease (IBD) affecting millions of people worldwide. miR-155 has been reported to be upregulated in various inflammatory diseases and is a positive regulator of the T-cell response. IL-17 secreting helper T (Th17) cells have been heavily implicated in tissue-specific immune pathology, including UC. METHODS AND RESULTS: Therefore, we targeted miR-155 and investigated its expression levels in a DSS-induced UC mouse model, revealing increased expression...
August 25, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28887948/psoriasis-pathogenesis-and-the-development-of-novel-targeted-immune-therapies
#15
REVIEW
Jason E Hawkes, Tom C Chan, James G Krueger
Psoriasis is caused by a complex interplay between the immune system, psoriasis-associated susceptibility loci, autoantigens, and multiple environmental factors. Over the last 2 decades, research has unequivocally shown that psoriasis represents a bona fide T cell-mediated disease primarily driven by pathogenic T cells that produce high levels of IL-17 in response to IL-23. The discovery of the central role for the IL-23/type 17 T-cell axis in the development of psoriasis has led to a major paradigm shift in the pathogenic model for this condition...
September 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28881647/ocular-behcet-s-disease-is-associated-with-aberrant-methylation-of-interferon-regulatory-factor-8-irf8-in-monocyte-derived-dendritic-cells
#16
Yiguo Qiu, Yunyun Zhu, Hongsong Yu, Shenglan Yi, Wencheng Su, Qingfeng Cao, Gangxiang Yuan, Aize Kijlstra, Peizeng Yang
Aberrant methylation of interferon regulatory factor 8 (IRF8) has been noted in various tumors. IRF8 has also been reported to be involved in many autoimmune diseases, including Behcet's disease (BD). However, the methylation status of IRF8 in BD has not been reported. To address this issue, we investigated whether the degree of methylation of IRF8 in dendritic cells (DCs) plays a role in the development of BD. We found a lower mRNA expression and a higher methylation level of IRF8 in active ocular BD patients as compared to normal subjects and inactive patients...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28881611/inhibition-and-deficiency-of-the-immunoproteasome-subunit-lmp7-suppress-the-development-and-progression-of-colorectal-carcinoma-in-mice
#17
Julia Koerner, Thomas Brunner, Marcus Groettrup
New treatment options and drug targets for colorectal carcinoma are a pressing medical need. Inflammation and pro-inflammatory cytokines produced by Th1 and Th17 cells like IL-6, TNF, IL-17 and IL-23 promote the development and growth of colorectal cancer (CRC). The immunoproteasome is a proteasome subtype highly expressed in immune cells but also in the intestine. Since the immunoproteasome promotes Th1 and Th17 differentiation and pro-inflammatory cytokine production, we investigated here whether deficiency or inhibition of the immunoproteasome subunit LMP7 would interfere with CRC development and exacerbation in preventive and therapeutic mouse models...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28879198/complement-c3-expression-is-decreased-in-autism-spectrum-disorder-subjects-and-contributes-to-behavioral-deficits-in-rodents
#18
Kiley Fagan, Amanda Crider, Anthony O Ahmed, Anilkumar Pillai
Autism spectrum disorder (ASD) is a neurodevelopmental disorder with hallmark symptoms including social deficits, communication deficits and repetitive behaviors. Accumulating evidence suggests a potential role of the immune system in the pathophysiology of ASD. The complement system represents one of the major effector mechanisms of the innate immune system, and regulates inflammation, and orchestrates defense against pathogens. However, the role of CNS complement system in ASD is not well understood. In the present study, we found a significant increase in C2, C5, and MASP1, but a decrease in C1q, C3, and C4 mRNA levels in the middle frontal gyrus of ASD subjects compared to controls...
July 2017: Molecular Neuropsychiatry
https://www.readbyqxmd.com/read/28878767/human-blood-cd1c-dendritic-cells-promote-th1-and-th17-effector-function-in-memory-cd4-t-cells
#19
Ingrid M Leal Rojas, Wai-Hong Mok, Frances E Pearson, Yoshihito Minoda, Tony J Kenna, Ross T Barnard, Kristen J Radford
Dendritic cells (DC) initiate the differentiation of CD4(+) helper T cells into effector cells including Th1 and Th17 responses that play an important role in inflammation and autoimmune disease pathogenesis. In mice, Th1 and Th17 responses are regulated by different conventional (c) DC subsets, with cDC1 being the main producers of IL-12p70 and inducers of Th1 responses, while cDC2 produce IL-23 to promote Th17 responses. The role that human DC subsets play in memory CD4(+) T cell activation is not known. This study investigated production of Th1 promoting cytokine IL-12p70, and Th17 promoting cytokines, IL-1β, IL-6, and IL-23, by human blood monocytes, CD1c(+) DC, CD141(+) DC, and plasmacytoid DC and examined their ability to induce Th1 and Th17 responses in memory CD4(+) T cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28878115/il-23r-activated-stat3-stat4-is-essential-for-th1-th17-mediated-cns-autoimmunity
#20
Priscilla W Lee, Alan J Smith, Yuhong Yang, Amanda J Selhorst, Yue Liu, Michael K Racke, Amy E Lovett-Racke
The factors that promote the differentiation of pathogenic T cells in autoimmune diseases are poorly defined. Use of genetically modified mice has provided insight into molecules necessary for the development of autoimmunity, but the sum of the data has led to contradictory observations based on what is currently known about specific molecules in specific signaling pathways. To define the minimum signals required for development of encephalitogenic T cells that cause CNS autoimmunity, myelin-specific T cells were differentiated with various cytokine cocktails, and pathogenicity was determined by transfer into mice...
September 7, 2017: JCI Insight
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