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https://www.readbyqxmd.com/read/28642280/granulocytes-as-modulators-of-dendritic-cell-function
#1
REVIEW
Annelot Breedveld, Tom Groot Kormelink, Marjolein van Egmond, Esther de Jong
Effector T cell development is directly driven by APCs, in particular, by antigen-primed dendritic cells (DCs). Depending on the pathogenic stimulus and the microenvironment, DCs induce proliferation and polarization of naive CD4(+) T cells into different effector subsets, such as Th1, Th2, Th17, or regulatory T cells (Tregs). During inflammation, DCs are found in close proximity to other innate immune cells, including all granulocyte subtypes, which potentially influence the immunomodulatory capacities of DCs...
June 22, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28642092/chemokine-ccl17-is-expressed-by-dendritic-cells-in-the-cns-during-experimental-autoimmune-encephalomyelitis-and-promotes-pathogenesis-of-disease
#2
Christina Ruland, Hannes Renken, Ivan Kuzmanov, Arezoo Fattahi Mehr, Kathrin Schwarte, Manuela Cerina, Alexander Herrmann, David-Marian Otte, Andreas Zimmer, Nicholas Schwab, Sven G Meuth, Volker Arolt, Luisa Klotz, Irmgard Förster, Stefanie Scheu, Judith Alferink
The CC chemokine ligand 17 (CCL17) and its cognate CC chemokine receptor 4 (CCR4) are known to control leukocyte migration, maintenance of TH17 cells, and regulatory T cell (Treg) expansion in vivo. In this study we characterized the expression and functional role of CCL17 in the pathogenesis of experimental autoimmune encephalomyelitis (EAE). Using a CCL17/EGFP reporter mouse model, we could show that CCL17 expression in the CNS can be found in a subset of classical dendritic cells (DCs) that immigrate into the CNS during the effector phase of MOG-induced EAE...
June 19, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28638225/sodium-selenite-ameliorates-dextran-sulfate-sodium-induced-chronic-colitis-in-mice-by-decreasing-th1-th17-and-%C3%AE-%C3%AE-t-and-increasing-cd4-cd25-regulatory-t-cell-responses
#3
Li-Xuan Sang, Bing Chang, Jun-Feng Zhu, Fang-Li Yang, Yan Li, Xue-Feng Jiang, Da-Nan Wang, Chang-Long Lu, Xun Sun
AIM: To assess the effect of sodium selenite on the severity of dextran sulfate sodium (DSS)-induced colitis in C57BL/6 mice. METHODS: Mice were randomly divided into four groups (n = 10/group): normal group, selenium (Se) group, chronic colitis group, and Se + chronic colitis group. The mice were sacrificed on day 26. Survival rates, clinical symptoms, colon length, and histological changes were determined. The percentages and absolute numbers of immune system cells in the lamina propria lymphocytes (LPL) of the colon, the expression of mRNA in colon tissue, and the concentrations of Th1, Th17, and Treg cytokines in LPL from the large intestine, were measured...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28638223/clinical-significance-of-changes-in-the-th17-treg-ratio-in-autoimmune-liver-disease
#4
Ting-Ting Feng, Ting Zou, Xin Wang, Wei-Feng Zhao, Ai-Lan Qin
AIM: To investigate the levels, ratios, and clinical significance of T helper 17 (Th17) cells and regulatory T (Treg) cells in the peripheral blood of patients with autoimmune liver disease (AILD). METHODS: Forty-two AILD patients were included in the experimental group (group E), and 11 healthy subjects were recruited as the control group (group C). Flow cytometry was performed to determine the percentages of Th17 and Treg cells in peripheral blood lymphocytes...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28630387/assessment-of-t-helper-17-associated-cytokines-in-third-trimester-of-pregnancy
#5
Tahereh Poordast, Fateme Sadat Najib, Rasoul Baharlou, Atena Bijani, Shaghayegh Moradi Alamdarloo, Alieh Poordast
BACKGROUND: Preeclampsia is a common pregnancy-specific disorder associated with significant maternal and fetal morbidity and mortality worldwide. It has been proposed that the imbalance between two CD4+ T cell subtypes, regulatory T cells (Treg) and T-helper 17 cells (Th17), is involved in the pathophysiology of preeclampsia. OBJECTIVES: To determine the serum levels of IL-17, IL-21, IL-23 and TGF-β in patients with preeclampsia. METHODS: Blood samples were collected from 30 preeclampsia patients, 30 normotensive pregnant women and 30 healthy individuals with no history of malignancies or autoimmune disorders based on simple sampling...
June 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/28630384/modulation-of-cd4-t-cell-subsets-by-euphorbia-microciadia-and-euphorbia-osyridea-plant-extracts
#6
Haideh Namdari, Maryam Izad, Zahra Amirghofran
BACKGROUND: Euphorbia plants are traditionally used in folk medicine for infections, inflammation, and cancer. OBJECTIVES: To investigate the effects of the butanolic extracts of Euphorbia micorociadia and Euphorbia osyridea on specific transcription factors and cytokines expression of T cell subsets. METHODS: Activated mouse splenocytes were cultured in the presence of non-cytotoxic concentrations of the extracts. Cells were evaluated for the gene expressions of T cell transcription factors and cytokines of T helper (Th)1 [T-bet and interferon gamma (IFNγ)], Th17 [retinoic acid receptor related orphan receptor (RORγt) and interleukin (IL)-17], and T regulatory (Treg) cells [forkhead box P3(Foxp3), IL-10, and Transforming growth factor (TGF)-β] using real-time PCR...
June 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/28625242/-clinical-significance-of-combined-detection-of-peripheral-mir-182-and-il-17-in-the-early-diagnosis-of-patients-with-eclampsia-complicated-with-cerebral-infarction-in-icu
#7
Lina Zhang, Tiejun Wu, Dawei Wu, Yanjun Liu, Min Bai, Shuangfeng Chen
OBJECTIVE: To observe the effect of peripheral blood microRNA-182 (miR-182) combined with interleukin-17 (IL-17) in the early diagnosis of cerebral infarction (CI) in patients with eclampsia. METHODS: A prospective non-randomized controlled study was conducted. The patients with eclampsia admitted to intensive care unit (ICU) of Liaocheng People's Hospital from January 1st, 2013 to September 30th 2016 were enrolled. Cerebral imaging was conducted in 7 days after admission to make a definite diagnosis of the occurrence of CI, excluding patients with cerebral hemorrhage...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28621034/depletion-of-foxp3-tregs-improves-control-of-larval-echinococcus-multilocularis-infection-by-promoting-co-stimulation-and-th1-17-immunity
#8
Junhua Wang, Stephan Müller, Renyong Lin, Myriam Siffert, Dominique A Vuitton, Hao Wen, Bruno Gottstein
INTRODUCTION: The growth potential of the tumor-like Echinococcus multilocularis metacestode (causing alveolar echinococcosis, AE) is directly linked to the nature/function of the periparasitic host immune-mediated processes. Previous studies had shown that regulatory T cells (Tregs) become gradually up-regulated in the course of both chronic human and murine AE. Thus we now tackled the role of FoxP3(+) Tregs and FoxP3(+) -Treg-regulated immune response in contributing to the control of this helminthic infection...
June 16, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/28620241/tgf-beta-atra-induced-tregs-express-a-selected-set-of-micrornas-involved-in-the-repression-of-transcripts-related-to-th17-differentiation
#9
Josiane Lilian Dos Santos Schiavinato, Rodrigo Haddad, Felipe Saldanha-Araujo, João Baiochi, Amélia Goes Araujo, Priscila Santos Scheucher, Dimas Tadeu Covas, Marco Antonio Zago, Rodrigo Alexandre Panepucci
Regulatory T cells (Tregs) are essential regulators of immune tolerance. atRA and TGF-β can inhibit the polarization of naïve T cells into inflammatory Th17 cells, favoring the generation of stable iTregs, however the regulatory mechanisms involved are not fully understood. In this context, the roles of individual microRNAs in Tregs are largely unexplored. Naïve T cells were immunomagnetically isolated from umbilical cord blood and activated with anti-human CD2/CD3/CD28 beads in the presence of IL-2 alone (CD4Med) or with the addition of TGF-β and atRA (CD4TGF/atRA)...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28619040/helicobacter-suis-induces-changes-in-gastric-inflammation-and-acid-secretion-markers-in-pigs-of-different-ages
#10
C De Witte, B Devriendt, B Flahou, I Bosschem, R Ducatelle, A Smet, F Haesebrouck
Gastric mRNA expression of markers for acid secretion and inflammation and presence of gastric ulceration was studied in naturally Helicobacter suis-infected and non-infected 2-3 months old, 6-8 months old and adult pigs. In H. suis-infected 2-3 months old pigs, IL-8 and IL-1β transcript levels were upregulated in the pyloric gland zone, indicating an innate immune response. A similar response was demonstrated in the fundic gland zone of adult pigs, potentially due to a shift of H. suis colonization from the pyloric to the fundic gland zone...
June 15, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28617989/1-25-dihydroxyvitamin-d3-induced-dendritic-cells-suppress-experimental-autoimmune-encephalomyelitis-by-increasing-proportions-of-the-regulatory-lymphocytes-and-reducing-th1-th17-cells
#11
Zhongxiang Xie, Jingtao Chen, Chao Zheng, Jing Wu, Yun Cheng, Shan Zhu, Chenhong Lin, Qingqing Cao, Jie Zhu, Tao Jin
Dendritic cells (DCs), a bridge of innate and adaptive immune responses, play a key role in the development of multiple sclerosis (MS) and experimental autoimmune encephalomyelitis (EAE), an animal model for MS. Administration of tolerogenic DCs has been used as an immunotherapy in the autoimmune diseases. Deficiency of vitamin D is an environmental risk factor of MS. In this study, we induced tolerogenic DCs by 1,25-dihydroxyvitamin D3 (1,25(OH)2 D3 ) and adoptive transferred the tolerogenic DCs (VD3-DCs) into EAE mice...
June 15, 2017: Immunology
https://www.readbyqxmd.com/read/28617942/withasteroid-b-from-d-metel-l-regulates-immune-responses-by-modulating-the-jak-stat-pathway-and-the-il-17-ror%C3%AE-t-il-10-foxp3-ratio
#12
Yang Su, Qiuhong Wang, Bingyou Yang, Lun Wu, Genhong Cheng, Haixue Kuang
Datura metel L. is a medicinal herb that contains withasteroids and has a wide range of biological activities. We isolated 7 withasteroids from the flowers of D. metel L(1) . and examined their ability to inhibit immune responses in vitro and in vivo. Among the withasteroids, B2(2) exhibited the strongest inhibitory effect on immune responses comparing B2 with other isolated compounds from D. metel L., including suppressing the differentiation of CD4(+3) T cells by inhibiting the expression and production of T cell lineage-specific master regulators and cytokines and directly suppressing the cytokine-induced JAK/STAT(4) signaling pathways...
June 15, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28615031/leucine-rich-alpha-2-glycoprotein-promotes-th17-differentiation-and-collagen-induced-arthritis-in-mice-through-enhancement-of-tgf-%C3%AE-smad2-signaling-in-na%C3%A3-ve-helper-t-cells
#13
Hayato Urushima, Minoru Fujimoto, Takashi Mishima, Tomoharu Ohkawara, Hiromi Honda, Hyun Lee, Hirohisa Kawahata, Satoshi Serada, Tetsuji Naka
BACKGROUND: Leucine-rich alpha 2 glycoprotein (LRG) has been identified as a serum protein elevated in patients with active rheumatoid arthritis (RA). Although the function of LRG is ill-defined, LRG binds with transforming growth factor (TGF)-β and enhances Smad2 phosphorylation. Considering that the imbalance between T helper 17 (Th17) cells and regulatory T cells (Treg) plays important roles in the pathogenesis of RA, LRG may affect arthritic pathology by enhancing the TGF-β-Smad2 pathway that is pivotal for both Treg and Th17 differentiation...
June 14, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28614408/schistosoma-japonicum-infection-downregulates-house-dust-mite-induced-allergic-airway-inflammation-in-mice
#14
Sugan Qiu, Xiaolin Fan, Yingying Yang, Panpan Dong, Wei Zhou, Yongliang Xu, Yonghua Zhou, Fukun Guo, Yi Zheng, Jun-Qi Yang
The "hygiene hypothesis" is a theory try to explain the dramatic increases in the prevalence of autoimmune and allergic diseases over the past two to three decades in developed countries. According to this theory, reduced exposure to parasites and microorganisms in childhood is the main cause for the increased incidences of both T helper 1 (Th1)-mediated autoimmunity and Th2-mediated allergy. In this study, we investigated the impact of Schistosoma japonicum infection on the allergic airway inflammation induced by repeated intracheal inoculations of house dust mites (HDM), which is a Th17 and neutrophils dominant murine asthma model, mimicking severe asthma...
2017: PloS One
https://www.readbyqxmd.com/read/28607600/impact-of-circulating-t-helper-1-and-17-cells-in-the-blood-on-regional-lymph-node-invasion-in-colorectal-cancer
#15
Ji Yeon Lee, Eun-Hye Seo, Chung-Sik Oh, Jin-Hee Paik, Dae-Yong Hwang, Seung Hyun Lee, Seong-Hyop Kim
We hypothesised that the blood levels of immune cells would be related to the progression of colorectal cancer and regional lymph node metastasis. We investigated the association between the blood levels of immune cells and regional lymph node metastasis in colorectal cancer patients. Patients with American Joint Committee on Cancer (AJCC) stages 1 and 2 colorectal cancer were assigned to Early stage group and those with AJCC stages 3 and 4 were assigned to Late stage group. Blood levels of circulating immune cells, such as cluster of differentiation (CD)4(+) including T helper 1 (Th1) and 17 (Th17) cells, regulatory T (Treg) cells, CD8(+) T cells, and natural killer (NK) cells were assessed using fluorescence-activated cell sorting (FACS)...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28607488/stability-and-function-of-regulatory-t-cells-expressing-the-transcription-factor-t-bet
#16
Andrew G Levine, Alejandra Medoza, Saskia Hemmers, Bruno Moltedo, Rachel E Niec, Michail Schizas, Beatrice E Hoyos, Ekaterina V Putintseva, Ashutosh Chaudhry, Stanislav Dikiy, Sho Fujisawa, Dmitriy M Chudakov, Piper M Treuting, Alexander Y Rudensky
Adaptive immune responses are tailored to different types of pathogens through differentiation of naive CD4 T cells into functionally distinct subsets of effector T cells (T helper 1 (TH1), TH2, and TH17) defined by expression of the key transcription factors T-bet, GATA3, and RORγt, respectively. Regulatory T (Treg) cells comprise a distinct anti-inflammatory lineage specified by the X-linked transcription factor Foxp3 (refs 2, 3). Paradoxically, some activated Treg cells express the aforementioned effector CD4 T cell transcription factors, which have been suggested to provide Treg cells with enhanced suppressive capacity...
June 15, 2017: Nature
https://www.readbyqxmd.com/read/28607385/exogenous-interleukin-37-ameliorates-atherosclerosis-via-inducing-the-treg-response-in-apoe-deficient-mice
#17
Qingwei Ji, Kai Meng, Kunwu Yu, Song Huang, Ying Huang, Xiaohong Min, Yucheng Zhong, Bangwei Wu, Yuzhou Liu, Shaoping Nie, Jianwei Zhang, Yujie Zhou, Qiutang Zeng
Our previous study indicated that interleukin (IL)-37 is involved in atherosclerosis. In the present study, Anterior tibial arteries were collected from diabetes patients and controls. A histopathological analysis showed that IL-37 was over-expressed in human atherosclerotic plaques. Many types of cells including macrophages, vascular smooth muscle cells (VSMCs), endothelial cells and T lymphocyte expressed IL-37 in human atherosclerotic plaques. ApoE-/- mice were divided into a control group and a recombinant human IL-37-treated group...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28606240/-effects-of-vasoactive-intestinal-peptide-on-airway-inflammation-and-th17-treg-balance-in-asthmatic-mice
#18
Li-Qin Ke, Feng-Mei Wang, Yun-Chun Luo
OBJECTIVE: To investigate the effects of vasoactive intestinal peptide (VIP) on the airway inflammation and its regulatory effect on Th17/Treg imbalance in asthmatic mice. METHODS: A total of 30 BALB/c mice were equally and randomly divided into three groups: control, asthma, and VIP. An acute asthmatic mouse model was established by sensitization and challenge with ovalbumin (OVA). The control group received normal saline instead of OVA. Before the challenge with OVA, the VIP group was administered VIP (20 μg/mL) by aerosol inhalation for 30 minutes...
June 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28605137/peripheral-immunophenotyping-identifies-three-subgroups-based-on-t-cell-heterogeneity-in-lupus-patients
#19
Satoshi Kubo, Shingo Nakayamada, Maiko Yoshikawa, Yusuke Miyazaki, Kei Sakata, Kazuhisa Nakano, Kentaro Hanami, Shigeru Iwata, Ippei Miyagawa, Kazuyoshi Saito, Yoshiya Tanaka
OBJECTIVE: To elucidate the diversity of systemic lupus erythematosus (SLE), we stratified active SLE patients based on immunophenotyping. METHODS: Peripheral blood mononuclear cells were obtained from 143 SLE patients and 49 healthy individuals. Circulating B, T and dendritic cells were defined based on flow cytometric analysis for human immune system termed "the Human Immunology Project". Based on these results, the immunophenotype was visualized by principal component analysis and SLE patients classified into subgroups by cluster analysis...
June 12, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28604806/prostaglandin-e2-inhibits-tr1-cell-differentiation-through-suppression-of-c-maf
#20
Kirsten Mary Hooper, Weimin Kong, Doina Ganea
Prostaglandin E2 (PGE2), a major lipid mediator abundant at inflammatory sites, acts as a proinflammatory agent in models of inflammatory/autoimmune diseases by promoting CD4 Th1/Th17 differentiation. Regulatory T cells, including the IL-10 producing Tr1 cells counterbalance the proinflammatory activity of effector Th1/Th17 cells. Tr1 cell differentiation and function are induced by IL-27, and depend primarily on sustained expression of c-Maf in addition to AhR and Blimp-1. In agreement with the in vivo proinflammatory role of PGE2, here we report for the first time that PGE2 inhibits IL-27-induced differentiation and IL-10 production of murine CD4+CD49b+LAG-3+Foxp3- Tr1 cells...
2017: PloS One
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