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TH17 T cells

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https://www.readbyqxmd.com/read/29346764/sgk1-governs-the-reciprocal-development-of-th17-and-regulatory-t-cells
#1
Chuan Wu, Zuojia Chen, Sheng Xiao, Theresa Thalhamer, Asaf Madi, Timothy Han, Vijay Kuchroo
A balance between Th17 and regulatory T (Treg) cells is critical for immune homeostasis and tolerance. Our previous work has shown Serum- and glucocorticoid-induced kinase 1 (SGK1) is critical for the development and function of Th17 cells. Here, we show that SGK1 restrains the function of Treg cells and reciprocally regulates development of Th17/Treg balance. SGK1 deficiency leads to protection against autoimmunity and enhances self-tolerance by promoting Treg cell development and disarming Th17 cells. Treg cell-specific deletion of SGK1 results in enhanced Treg cell-suppressive function through preventing Foxo1 out of the nucleus, thereby promoting Foxp3 expression by binding to Foxp3 CNS1 region...
January 16, 2018: Cell Reports
https://www.readbyqxmd.com/read/29346060/a-combination-with-probiotic-complex-zinc-and-coenzyme-q10-attenuates-autoimmune-arthritis-by-regulation-of-th17-treg-balance
#2
Seon-Young Lee, Seung Hoon Lee, JooYeon Jhun, Hyeon-Beom Seo, Kyung Ah Jung, Chul Woo Yang, Sung-Hwan Park, Mi-La Cho
Probiotic complex, zinc, and coenzyme Q10 (CoQ10) are recognized dietary supplements with an anti-inflammatory role. Although these supplementations are individually known to benefit rheumatoid arthritis (RA), there is no evidence suggesting any synergic effect. The primary goal of this study is to determine whether probiotic complex, zinc, and CoQ10 attenuate the development of collagen-induced arthritis (CIA). The combination of probiotic complex, zinc, and CoQ10 reduced CIA severity by downregulating the levels of IgG, IgG1, and IgG2a in serum...
January 2018: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29345621/the-circulating-t-helper-subsets-and-regulatory-t-cells-in-patients-with-common-variable-immunodeficiency-with-no-known-monogenic-disease
#3
G Azizi, A Mirshafiey, H Abolhassani, R Yazdani, F J Ansariha, M Shaghaghi, S S Mortazavi-Jahromi, F Noorbakhsh, N Rezaei, A Aghamohammadi
BACKGROUND: Common variable immunodeficiency (CVID) is the most common symptomatic primary immunodeficiency (PID), characterized by heterogeneous clinical manifestations and defects in B- and T- cells. In the present study, we investigated the T helper (Th) cell subsets and regulatory T (Treg) cells, and their related cytokines and transcription factors in the CVID patients with no definite genetic diagnosis. METHODS: The study population comprised 13 CVID patients and 13 healthy controls (HC)...
January 18, 2018: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/29345340/berberine-demonstrates-anti-inflammatory-properties-in-helicobacter-pylori-infected-mice-with-chronic-gastritis-by-attenuating-the-th17-response-triggered-by-the-b-cell-activating-factor
#4
Xiuxia Wu, Xian Li, Zhongqin Dang, Yunfei Jia
Berberine (BBR) is an isoquinoline alkaloid derived from various medicinal herbs. Previous studies have suggested that BBR exerts antimicrobial, antitumor, and antidiabetic effects and can be used to treat Helicobacter pylori-induced chronic gastritis. However, the exact mechanism by which BBR inhibits H. pylori infection is not fully understood. We investigated the anti-inflammatory properties and potential mechanism of BBR in H. pylori-infected mice with chronic gastritis. We found that BBR can suppress the expression of pro-inflammatory genes IL-6, TGF-β, and IL-1β and upregulate anti-inflammatory gene IL-10 expression in the mucosa and RAW 264...
January 18, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29344311/gilz-activin-a-as-a-novel-signaling-axis-orchestrating-mesenchymal-stem-cell-and-th17-cell-interplay
#5
Patricia Luz-Crawford, Gabriel Espinosa-Carrasco, Natacha Ipseiz, Rafael Contreras, Gautier Tejedor, Daniel A Medina, Ana-Maria Vega-Letter, Devi Ngo, Eric F Morand, Jérôme Pène, Javier Hernandez, Christian Jorgensen, Farida Djouad
Mesenchymal stem cells (MSC) are highly immunosuppressive cells able to reduce chronic inflammation through the active release of mediators. Recently, we showed that glucocorticoid-induced leucine zipper (Gilz) expression by MSC is involved in their therapeutic effect by promoting the generation of regulatory T cells. However, the mechanisms underlying this pivotal role of Gilz remain elusive. Methods and Results In this study, we have uncovered evidence that Gilz modulates the phenotype and function of Th1 and Th17 cells likely by upregulating the level of Activin A and NO2 secreted by MSC...
2018: Theranostics
https://www.readbyqxmd.com/read/29338157/imbalance-of-th17-treg-in-the-pathogenesis-of-mice-with-paraquat-induced-acute-lung-injury
#6
Xia Yang, Jing-Hong Zhang, Jian-Feng Zhang, Hua Lin, Wei Chen, Li Xiang, Chao-Qian Li
Recent studies suggest that imbalances in the ratios of CD4+ T helper cell subsets, T helper-17 (Th17) and regulatory T (Treg) cells play a crucial role in the pathogenesis of acute lung injury (ALI). However, studies of the imbalance of Th17/Treg in paraquat (PQ)-induced ALI have not been reported. Therefore, we investigated whether the ratio of Th17/Treg cells in a mouse model of PQ-induced ALI contributes to pathogenesis of ALI. Male Kunming mice were randomly treated with saline (control group) or PQ (PQ-poisoned (PQP) group); mice were sacrificed at either 12 hours (PQP-12h) or 24 hours (PQP-24h and control) post-treatment...
December 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29336663/lactobacillus-acidophilus-improves-intestinal-inflammation-in-an-acute-colitis-mouse-model-by-regulation-of-th17-and-treg-cell-balance-and-fibrosis-development
#7
Jin-Sil Park, JeongWon Choi, JooYeon Jhun, Ji Ye Kwon, Bo-In Lee, Chul Woo Yang, Sung-Hwan Park, Mi-La Cho
Disruption of the balance among the microbiota, epithelial cells, and resident immune cells in the intestine is involved in the pathogenesis of inflammatory bowel disease (IBD). Probiotics exert protective effects against IBD, and probiotic commensal Lactobacillus species are common inhabitants of the natural microbiota, especially in the gut. To investigate the effects of Lactobacillus acidophilus on the development of IBD, L. acidophilus was administered orally in mice with dextran sodium sulfate (DSS)-induced colitis...
January 16, 2018: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29331869/dietary-naringenin-supplementation-attenuates-experimental-autoimmune-encephalomyelitis-by-modulating-autoimmune-inflammatory-responses-in-mice
#8
Junpeng Wang, Ying Qi, Xinli Niu, Hua Tang, Simin Nikbin Meydani, Dayong Wu
Autoimmune disease is highly prevalent in humans. Since conventional therapies have limited efficacy and often come with significant side effects, nutrition may provide an alternative and complementary approach to improving autoimmune disorders. Naringenin, a flavonoid found in citrus fruits, has been shown to have anti-inflammatory and antioxidant properties. Using the experimental autoimmune encephalomyelitis (EAE), a rodent model of human multiple sclerosis, we determined the effect of dietary naringenin (0...
December 11, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29331794/melatonin-suppresses-eosinophils-and-th17-cells-in-hamsters-treated-with-a-combination-of-human-liver-fluke-infection-and-a-chemical-carcinogen
#9
Wachanan Wongsena, Lakhanawan Charoensuk, Rungtiwa Dangtakot, Porntip Pinlaor, Kitti Intuyod, Somchai Pinlaor
BACKGROUND: The combination of Opisthorchis viverrini (OV) infection and chemical carcinogen induces cholangiocarcinoma (CCA) in hamsters via inflammation-mediated mechanisms. Thus, suppression of inflammatory cells at the initial stages of CCA development would be of benefit. We aimed to investigate whether IL-17-producing CD4+ T cells (Th17) and CD4+ Foxp3+ T cells (Treg) are involved in the early stages of CCA genesis and can be targeted for suppression by melatonin. METHODS: Inflammation, an initial stage of CCA development, was induced in hamsters by a combination of O...
July 26, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29331587/il-23-il-17-immune-axis-in-guillain-barr%C3%A3-syndrome-exploring-newer-vistas-for-understanding-pathobiology-and-therapeutic-implications
#10
REVIEW
Monojit Debnath, Madhu Nagappa, Geetanjali Murari, Arun B Taly
Guillain Barré Syndrome (GBS) is a severe disorder of the peripheral nervous system with an inadequately known etiopathology. It is a post infectious immune mediated disorder, characterized by autoantibody production, complement activation as well as T reactivity against gangliosides. However, the precise etiopathogenesis remains poorly understood in a majority of the patients. Th17 cells, a recently identified lineage of Th cells have emerged as a predominant inducer of autoimmunity and inflammation in various immunological disorders...
January 10, 2018: Cytokine
https://www.readbyqxmd.com/read/29331376/microrna-425-facilitates-pathogenic-th17-cell-differentiation-by-targeting-forkhead-box-o1-foxo1-and-is-associated-with-inflammatory-bowel-disease
#11
Xue Yang, Qinyu He, Zhenzhen Guo, Fei Xiong, Yi Li, Yan Pan, Caiping Gao, Liangping Li, Chong He
Inflammatory bowel disease (IBD) is a chronic autoimmune disease, and its pathogenesis remains mostly unknown. MicroRNAs (miRs) has drawn much attention as a crucial regulator of autoimmune diseases. In this study, we demonstrated, for the first time, that miR-425 was significantly up-regulated in peripheral blood mononuclear cells (PBMC) and mucosa of patients with IBD. In note, T helper (Th) 17 cells were found to be the major source of miR-425 expression. Using gain-of-function approaches, we demonstrated that miR-425 could facilitate the differentiation of CD4+ T cells into Th17 lineage...
January 10, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29330859/differential-effects-of-phototherapy-adalimumab-and-betamethasone-calcipotriol-on-effector-and-regulatory-t-cells-in-psoriasis
#12
I S Kotb, B J Lewis, R N Barker, A D Ormerod
BACKGROUND: Psoriasis is a chronic T cell-mediated skin disease with marked social and economic burdens. Current treatments are unsatisfactory, with unpredictable remission times and incompletely understood modes of action. Recent advances in our understanding of the pathogenesis of psoriasis identify the imbalance between CD4+ T effector cells, particularly the T helper (Th) 17 subset, and regulatory T cells (Treg) as key to the development of psoriatic lesions, and therefore a novel therapeutic target...
January 12, 2018: British Journal of Dermatology
https://www.readbyqxmd.com/read/29330324/betaine-ameliorates-experimental-autoimmune-encephalomyelitis-by-inhibiting-dendritic-cell-derived-il-6-production-and-th17-differentiation
#13
Cuixia Yang, Weiming Lai, Jinfeng Zhou, Xinyuan Zheng, Yingying Cai, Wanjie Yang, Sirong Xie, Yuan Gao, Changsheng Du
IL-17-secreting T cells (Th17 cells) play a pathogenic role in multiple autoimmune diseases, including multiple sclerosis (MS), and dendritic cell (DC)-derived cytokines play pivotal roles in promoting the differentiation of naive CD4+ T cells into Th cell subsets (Th1 and Th17). Therefore, small molecules blocking the key cytokines produced by DCs will be beneficial in MS. In this article, we report that betaine treatment ameliorates MS pathogenesis by inhibiting DC-derived IL-6 production and Th17 differentiation...
January 12, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29327325/circulating-level-of-th17-cells-is-associated-with-sensitivity-to-glucocorticoids-in-patients-with-immune-thrombocytopenia
#14
YiChan Zhang, TingTing Ma, Xuan Zhou, JunHao Chen, Juan Li
Glucocorticoids are a widely recognized first-line therapy for immune thrombocytopenia (ITP). However, some patients are unresponsive to glucocorticoid therapy for reasons that remain unclear. Accumulating evidence suggests that CD4+ T-cell abnormalities play a crucial role in the development of ITP. In the present study, we investigated peripheral blood CD4+ T cells, Th17-associated cytokines, and the mRNA expression level of Th17 transcription factor-RORγt-in patients with newly-diagnosed ITP before glucocorticoid therapy...
January 11, 2018: International Journal of Hematology
https://www.readbyqxmd.com/read/29324391/sirna-mediated-c-rel-knockdown-ameliorates-collagen-induced-arthritis-in-mice
#15
Tingting Fan, Fuhua Zhong, Ruiling Liu, Youhai H Chen, Ting Wang, Qingguo Ruan
Previous studies have shown that inflammatory mediators involved in the development of rheumatoid arthritis (RA) are regulated by the Rel/nuclear factor-κB (Rel/NF-κB) transcription factor family. c-Rel, a member of the Rel/NF-κB family that is preferentially expressed by immune cells, is a risk factor for several inflammatory diseases including RA. In the current study, we investigated whether targeting c-Rel can be used to treat collagen-induced arthritis, an animal model for RA. c-Rel specific siRNA (siRel) delivered by nanoparticles was used to knockdown the expression of c-Rel...
January 8, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29317510/the-f-box-protein-fbp1-shapes-the-immunogenic-potential-of-cryptococcus-neoformans
#16
Jorge Masso-Silva, Vanessa Espinosa, Tong-Bao Liu, Yina Wang, Chaoyang Xue, Amariliz Rivera
Cryptococcus neoformans is the main etiologic agent of cryptococcal meningitis and causes a significant number of deadly infections per year. Although it is well appreciated that host immune responses are crucial for defense against cryptococcosis, our understanding of factors that control the development of effective immunity to this fungus remains incomplete. In previous studies, we identified the F-box protein Fbp1 as a novel determinant of C. neoformans virulence. In this study, we found that the hypovirulence of the fbp1Δ mutant is linked to the development of a robust host immune response...
January 9, 2018: MBio
https://www.readbyqxmd.com/read/29315632/food-allergen-sensitized-ccr9-lymphocytes-enhance-airways-allergic-inflammation-in-mice
#17
Laure Castan, Marie-Aude Cheminant, Luc Colas, Sophie Brouard, Antoine Magnan, Grégory Bouchaud
BACKGROUND: The mechanisms of the atopic march, characterized by a natural progression from food and cutaneous allergies to rhinitis and asthma, are still unknown. However, as several organs can be involved, chemokines and their receptors might be implicated in this process and may be instrumental factors. OBJECTIVES: We hypothesized that the T-cell gut-homing receptor CCR9 could be implicated in the evolution of allergic diseases. METHODS: We characterized the immune response and the role of CCR9 in a murine model combining food allergy to wheat gliadin and a model of acute airways inflammation in response to house dust mite...
January 9, 2018: Allergy
https://www.readbyqxmd.com/read/29315114/higher-levels-of-peripheral-th17-t-cd4-cells-are-associated-with-immunological-non-response-in-hiv-infected-patients-undereffective-art
#18
Ilaria De Benedetto, Michela Masetti, Massimiliano Fabbiani, Mara Biasin, Antonio Muscatello, Nicola Squillace, Mario Clerici, Daria Trabattoni, Andrea Gori, Alessandra Bandera
No abstract text is available yet for this article.
January 8, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29314270/association-of-leptin-with-disease-severity-and-inflammation-indicators-in-chinese-obese-children-with-allergic-rhinitis
#19
Wenlong Liu, Qingxiang Zeng, Lifeng Zhou, Renzhong Luo, Haipeng Dong
BACKGROUND: The prevalence of both obesity and allergic diseases in children has increased over the last several decades. However, the direct relationship between diverse allergic diseases and obesity has varied in different studies. Therefore, we aimed to examine the effect of obesity on the incidence and severity of allergic rhinitis (AR) and the possible key inflammation mediators during AR. METHODS: A total of 3,126 healthy students (without chronic diseases) were recruited from 14 randomly selected secondary schools in Guangzhou, China...
January 4, 2018: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/29311619/in-situ-immune-response-and-mechanisms-of-cell-damage-in-central-nervous-system-of-fatal-cases-microcephaly-by-zika-virus
#20
Raimunda S S Azevedo, Jorge R de Sousa, Marialva T F Araujo, Arnaldo J Martins Filho, Bianca N de Alcantara, Fernanda M C Araujo, Maria G L Queiroz, Ana C R Cruz, Beatriz H Baldez Vasconcelos, Jannifer O Chiang, Lívia C Martins, Livia M N Casseb, Eliana V da Silva, Valéria L Carvalho, Barbara C Baldez Vasconcelos, Sueli G Rodrigues, Consuelo S Oliveira, Juarez A S Quaresma, Pedro F C Vasconcelos
Zika virus (ZIKV) has recently caused a pandemic disease, and many cases of ZIKV infection in pregnant women resulted in abortion, stillbirth, deaths and congenital defects including microcephaly, which now has been proposed as ZIKV congenital syndrome. This study aimed to investigate the in situ immune response profile and mechanisms of neuronal cell damage in fatal Zika microcephaly cases. Brain tissue samples were collected from 15 cases, including 10 microcephalic ZIKV-positive neonates with fatal outcome and five neonatal control flavivirus-negative neonates that died due to other causes, but with preserved central nervous system (CNS) architecture...
January 8, 2018: Scientific Reports
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