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https://www.readbyqxmd.com/read/29228429/peripheral-blood-cd8-t-cell-profiles-in-patients-with-psoriatic-arthritis-a-cross-sectional-case-control-study
#1
E Colombo, G Galleri, G L Erre, C Piras, G Biondi, L Taras, A Zinellu, A A Mangoni, R Manetti, M Montesu, G Passiu
OBJECTIVE: While CD4+ T-cells are traditionally regarded as the main pathogenic T-cell subpopulation in psoriatic arthritis (PsA), the role of circulating CD8+ T-cells remains poorly characterized. We evaluated the differential representation of CD8+ T-cell subpopulations in peripheral blood (PB) of PsA patients. PATIENTS AND METHODS: CD8+IL-17+, CD8+IFNγ+ and CD8+IL-17-IL-22+ T-cells were evaluated by flow-cytometry in 25 consecutive PsA patients, 7 rheumatoid arthritis (RA) patients, 16 patients with psoriasis, and 26 healthy controls (HC)...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29226422/pathogenesis-of-psoriasis-and-development-of-treatment
#2
REVIEW
Eisaku Ogawa, Yuki Sato, Akane Minagawa, Ryuhei Okuyama
The pathogenesis of psoriasis can be explained by dysregulation of immunological cell function as well as keratinocyte proliferation/differentiation. Recently, the immunological pathomechanism has been clarified substantially. Whereas T-helper (Th)1 overactivation was thought to induce occurrence of psoriasis, it has been demonstrated that Th17 cells play a key role. Th17 development is maintained by interleukin (IL)-23 mainly produced by dendritic cells. Th17 cells produce various cytokines, including IL-17A, IL-17F and IL-22...
December 10, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/29212256/matrix-metalloproteinase-mmp9-maintains-epithelial-barrier-function-and-preserves-mucosal-lining-in-colitis-associated-cancer
#3
Adani Pujada, Lewins Walter, Aashka Patel, Tien Anh Bui, Zhan Zhang, Yuchen Zhang, Timothy Luke Denning, Pallavi Garg
In colitis associated cancer (CAC), chronic inflammation exposes the epithelial mucosal defensive lining to inflammatory mediators such as cytokines and anti-microbial peptides (AMPs) causing the dysbiosis of microbiota population and the dysregulation of immune response. Matrix Metalloproteinases (MMPs) are zinc dependent endopeptidases which mediate inflammation, tissue remodeling, and carcinogenesis. MMP9 is undetectable in healthy tissue, although highly upregulated during inflammation and cancer. We have previously shown that MMP9 plays a protective role in CAC opposite to its conventional role of acute inflammation and cancer mediator...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29210073/interleukin-17-regulates-matrix-metalloproteinase-activity-in-human-pulmonary-tuberculosis
#4
Shivani Singh, George Maniakis-Grivas, Utpal K Singh, Radha M Asher, Francesco Mauri, Paul T Elkington, Jon S Friedland
Tuberculosis (TB) is characterised by extensive pulmonary matrix breakdown. Interleukin-17 (IL-17) is key in host defence in TB but its role in TB-driven tissue damage is unknown. We investigated the hypothesis that respiratory stromal cell matrix metalloproteinase (MMP) production in TB is regulated by T helper-17 (TH -17) cytokines. Biopsies of patients with pulmonary TB were analysed by immunohistochemistry (IHC) and patient bronchoalveolar lavage fluid (BALF) MMP and cytokine concentrations measured by Luminex assays...
December 6, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/29209314/probiotic-strain-lactobacillus-casei-bl23-prevents-colitis-associated-colorectal-cancer
#5
Elsa Jacouton, Florian Chain, Harry Sokol, Philippe Langella, Luis G Bermúdez-Humarán
The gut microbiota plays a major role in intestinal health, and an imbalance in its composition can lead to chronic gut inflammation and a predisposition to developing colorectal cancer (CRC). Currently, the use of probiotic bacteria represents an emerging alternative to treat and prevent cancer. Moreover, consumption of these beneficial bacteria may also favorably modulate the composition of the gut microbiota, which has been described in several studies to play an important role in CRC carcinogenesis. In this context, the aim of this study was to assess the protective effect of oral treatment with Lactobacillus casei BL23, a probiotic strain well known for its anti-inflammatory and anticancer properties...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29203226/innately-versatile-%C3%AE-%C3%AE-17%C3%A2-t-cells-in-inflammatory-and-autoimmune-diseases
#6
REVIEW
Pedro H Papotto, Annika Reinhardt, Immo Prinz, Bruno Silva-Santos
IL-17-producing γδ (γδ17) T cells form a versatile subset of cells that respond rapidly to innate stimuli and support the pro-inflammatory functions of different myeloid and lymphoid lineages, being particularly critical in the early stages of inflammatory and autoimmune responses. In mice, under homeostatic conditions, these innate-like lymphocytes are pre-programmed in the fetal thymus, through an intricate process involving both T cell receptor-dependent and -independent signals, which allows them to readily produce IL-17 upon stimulation...
December 1, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29195141/il-17-is-a-protection-effector-against-the-adherent-invasive-escherichia-coli-in-murine-colitis
#7
Hai-Jia Zhang, Bin Xu, Hu Wang, Bing Xu, Guo-Dong Wang, Ming-Zuo Jiang, Chao Lei, Mei-Ling Ding, Peng-Fei Yu, Yong-Zhan Nie, Kai-Chun Wu, Su-Mei Sha, Meng-Bin Li
Inflammatory bowel disease (IBD) is caused by aberrant immune responses to the gut microbiota. Among the gut microbiota, adherent-invasive Escherichia Coli (AIEC) is thought to be the pathogen through invading the intestinal epithelial cells and causing inflammation. IL-17 secretion increase, induced by enhanced bacterial adhesion to the intestine epithelium, could on one hand protect the mucosa, but on the other hand, over amount of IL-17 initializes inflammation reactions that in turn damages the mucosa. The relationship between IL-17 and AIEC is still unclear...
November 28, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29193036/cxcl4-is-a-novel-inducer-of-human-th17-cells-and-correlates-with-il-17-and-il-22-in-psoriatic-arthritis
#8
Alsya J Affandi, Sandra C Silva-Cardoso, Samuel Garcia, Emmerik F A Leijten, Tessa S van Kempen, Wioleta Marut, Joel A G van Roon, Timothy R D J Radstake
CXCL4 regulates multiple facets of the immune response and is highly upregulated in various Th17-associated rheumatic diseases. However, whether CXCL4 plays a direct role in the induction of IL-17 production by human CD4 T cells is currently unclear. Here, we demonstrated that CXCL4 induced human CD4 T cells to secrete IL-17 that co-expressed IFNγ and IL-22, and differentiated naïve CD4 T cells to become Th17-cytokine producing cells. In a co-culture system of human CD4 T cells with monocytes or myeloid dendritic cells, CXCL4 induced IL-17 production upon triggering by superantigen...
November 29, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/29191054/onychomycosis-and-chronic-fungal-disease-exploiting-a-commensal-disguise-to-stage-a-covert-invasion
#9
Aditya K Gupta, Jessie Carviel, Neil H Shear
Onychomycosis is a chronic fungal infection that is recalcitrant to treatment and often results in relapse. New evidence suggests that disease prognosis may be linked to pathogens manipulating host immune responses. Therefore, individuals with specific mutations, including those affecting pattern recognition receptors or the interleukin (IL)-17 and IL-22 pathways, may be more susceptible to infection. Moreover, it is recommended that those with a family history of immune mutations or predisposition to fungal disease be treated aggressively for onychomycosis prior to symptom progression...
November 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/29182672/increased-expression-of-th17-cytokines-and-interleukin-22-correlates-with-disease-activity-in-pristane-induced-arthritis-in-rats
#10
Bo Wang, Panpan Zhao, Yan Zhou, Liesu Meng, Wenhua Zhu, Congshan Jiang, Linyu Wang, Yongsong Cai, Shemin Lu, Weikun Hou
The objective of this study was to identify the key changed subtype of T helper cells (Th cells) and their cytokines in pristane-induced arthritis (PIA) in rats. The severity of arthritis was evaluated by body weight, clinical score, the perimeter of ankle and mid-paw and histological assessment of ankle joints. Cytokines of Th1, Th2 and Th17 were determined in the spleen and inguinal lymph nodes at 28 days after pristane injection by real-time qPCR. The mRNA levels of IL-22 receptors, IL-22R1 and IL-22BP, in the spleen were quantified by real-time qPCR...
2017: PloS One
https://www.readbyqxmd.com/read/29181737/mir-548a-3p-promotes-keratinocyte-proliferation-targeting-ppp3r1-after-being-induced-by-il-22
#11
Xintong Zhao, Ronghua Li, Meng Qiao, Jianjun Yan, Qing Sun
Psoriasis is an immune-mediated chronic skin disorder where T cells play a main role, and numerous inflammatory cytokines are implicated in its pathogenesis by initiating keratinocyte proliferation. Interleukin-22 (IL-22), an IL-10 family cytokines, is critical in the pathogenesis and development of psoriasis. To determine the target of microRNA (miR) -548a-3p and investigate its role in keratinocyte proliferation after treating human keratinocytes (HaCaT) with IL-22, we used quantitative reverse transcriptase PCR to measure the expression of miR-548a-3p in both HaCaT cells stimulated with IL-22 and psoriatic lesions, and then detected the biological function of miR-548a-3p in HaCaT cells by performing Counting Kit-8 (CCK-8) assays...
November 27, 2017: Inflammation
https://www.readbyqxmd.com/read/29181415/endothelial-stat3-modulates-protective-mechanisms-in-a-mouse-ischemia-reperfusion-model-of-acute-kidney-injury
#12
Shataakshi Dube, Tejasvi Matam, Jessica Yen, Henry E Mang, Pierre C Dagher, Takashi Hato, Timothy A Sutton
STAT3 is a transcriptional regulator that plays an important role in coordinating inflammation and immunity. In addition, there is a growing appreciation of the role STAT3 signaling plays in response to organ injury following diverse insults. Acute kidney injury (AKI) from ischemia-reperfusion injury is a common clinical entity with devastating consequences, and the recognition that endothelial alterations contribute to kidney dysfunction in this setting is of growing interest. Consequently, we used a mouse with a genetic deletion of Stat3 restricted to the endothelium to examine the role of STAT3 signaling in the pathophysiology of ischemic AKI...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/29178520/a-catch-22-interleukin-22-and-cancer
#13
REVIEW
Pedro Hernandez, Konrad Gronke, Andreas Diefenbach
Barrier surfaces of multicellular organisms are in constant contact with the environment and infractions to the integrity of epithelial surfaces is likely a frequent event. Interestingly, components of the immune system, that can be activated by environmental compounds such as the microbiota or nutrients, are interspersed among epithelial cells or directly underlie the epithelium. It is now appreciated that immune cells continuously receive and integrate signals from the environment. Curiously, such continuous reception of stimulation does not normally trigger an inflammatory response but mediators produced by immune cells in response to such signals seem to rather promote barrier integrity and repair...
November 27, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/29176747/the-crucial-roles-of-th17-related-cytokines-signal-pathways-in-m-tuberculosis-infection
#14
REVIEW
Hongbo Shen, Zheng W Chen
Interleukin-17 (IL-17), IL-21, IL-22 and IL-23 can be grouped as T helper 17 (Th17)-related cytokines because they are either produced by Th17/Th22 cells or involved in their development. Here, we review Th17-related cytokines/Th17-like cells, networks/signals and their roles in immune responses or immunity against Mycobacterium tuberculosis (Mtb) infection. Published studies suggest that Th17-related cytokine pathways may be manipulated by Mtb microorganisms for their survival benefits in primary tuberculosis (TB)...
November 27, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/29174430/the-expanding-role-of-innate-lymphoid-cells-and-their-t-cell-counterparts-in-gastrointestinal-cancers
#15
Ka Yee Fung, Paul M Nguyen, Tracy Putoczki
Innate lymphoid cells (ILCs) contribute to the regulation of gastrointestinal (GI) homeostasis. Over the past 15 years, there has been a large effort to dissect the mechanisms required for GI homeostasis, with a major focus on different immune cell populations and the cytokines that they produce. In contrast to T-helper (Th) cells, ILCs respond rapidly to cytokines in their microenvironment in the absence of specific antigens; however, once activated both cell populations have similar effector functions. Two effector cytokines produced by both ILC3 and Th17 cell populations, Interleukin (IL)-17 and IL-22, have taken center stage for their ability to signal directly to GI epithelial cells and promote epithelial cell survival...
November 23, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29172969/interleukin-35-modulates-the-imbalance-between-regulatory-t-cells-and-t-helper-17-cells-in-enterovirus-71-induced-hand-foot-and-mouth-disease
#16
Qian Huang, Yanhua Wang, Changyun Si, De'an Zhao, Yanping Wang, Yuxiu Duan
Interleukin (IL)-35 modulates the imbalance between regulatory T cells (Tregs) and T helper (Th) 17 cells, which played vital roles in the pathogenesis of autoimmune and infectious diseases. However, the role of Tregs/Th17 cell imbalance and the regulatory functions of IL-35 have remained largely unknown in enterovirus 71 (EV71)-induced hand, foot, and mouth disease (HFMD). In this study, a total of 47 HFMD patients (30 with mild HFMD and 17 with severe HFMD) and 13 healthy individuals were enrolled. The frequencies of CD4+CD25+CD127dim/- Tregs and CD4+IL-17+ Th17 cells, as well as IL-35 expression levels, were measured...
November 27, 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/29164596/regulation-of-t-helper-cell-responses-during-antigen-presentation-by-norepinephrine-exposed-endothelial-cells
#17
Linghui Xu, Wanhong Ding, Lori L Stohl, Xi K Zhou, Shayan Azizi, Ethan Chuang, Jimmy Lam, John A Wagner, Richard D Granstein
Dermal blood vessels and regional lymph nodes are innervated by sympathetic nerves and, under stress, sympathetic nerves release norepinephrine (NE). Exposure of primary murine dermal microvascular endothelial cells (pDMECs) to NE followed by co-culture with Langerhans cells (LCs), responsive CD4+ T cells and antigen resulted in modulation of CD4+ T cell responses. NE-treatment of pDMECs induced increased production of interleukin (IL)-6 and IL-17A while downregulating interferon (IFN)-γ and IL-22 release...
November 21, 2017: Immunology
https://www.readbyqxmd.com/read/29164569/correlation-between-intestinal-flora-and-serum-inflammatory-factors-in-patients-with-crohn-s-disease
#18
J Zhang, S-L Chen, L-B Li
OBJECTIVE: We investigated the correlation between intestinal flora and serum inflammatory factors in patients with Crohn's disease. PATIENTS AND METHODS: From February 2014 to June 2016, 132 patients with Crohn's were enrolled in this study. There were 84 males and 48 females. The age range was from 28 to 72 years. We had 62 patients in active stage (the activity group) and 70 patients in remission stage (the remission group). We also enrolled 71 healthy cases in the control group...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29163483/cd4-t-cell-dysregulation-in-psoriatic-arthritis-reveals-a-regulatory-role-for-il-22
#19
Amara Ezeonyeji, Helen Baldwin, Milica Vukmanovic-Stejic, Michael R Ehrenstein
Dysregulation of interleukin-22 (IL-22) has been associated with autoimmune diseases but divergent effects upon inflammation have hampered efforts to define its contribution to pathogenesis. Here, we examined the role of IL-22 in patients with psoriatic arthritis (PsA). In the peripheral blood of PsA patients, there was a decrease in IL-22(+)CD4(+) T cells compared with healthy controls resulting in a heightened CD4(+) IFNγ(+)/IL-22(+) ratio accompanied by diminished CCR6 expression. IL-22 expressing cells were depleted primarily from the central memory CD4 T-cell subset in PsA patients...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29158815/tethering-interleukin-22-to-apolipoprotein-a-i-ameliorates-mice-from-acetaminophen-induced-liver-injury
#20
Wei Chen, Xuyao Zhang, Jiajun Fan, Wenjing Zai, Jingyun Luan, Yubin Li, Shaofei Wang, Qicheng Chen, Yichen Wang, Yanxu Liang, Dianwen Ju
Increasing evidence indicates that interleukin-22 (IL-22) holds tremendous potential as a protective agent in preventing liver injury, but its pleiotropic effects and pathogenic role in carcinogenesis, rheumatoid arthritis and psoriasis restrict its systemic application. Here, we first developed a nanoparticle (liposIA) as a liver-targeted agent through IL-22 tethered to apolipoprotein A-I (ApoA-I) in a gene therapy vector. LiposIA was prepared using thin film dispersion method and the complexes exhibited desirable nanoparticle size, fine polydisperse index, highly efficient transfection, and excellent serum and storage stability...
2017: Theranostics
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