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https://www.readbyqxmd.com/read/28433688/vitamin-d-downregulates-the-il-23-receptor-pathway-in-human-mucosal-ilc3
#1
Viktoria Konya, Paulo Czarnewski, Marianne Forkel, Anna Rao, Efthymia Kokkinou, Eduardo J Villablanca, Sven Almer, Ulrik Lindforss, Danielle Friberg, Charlotte Höög, Peter Bergman, Jenny Mjösberg
BACKGROUND: Vitamin D deficiency is a risk factor for inflammatory bowel disease (IBD). The IL-23-driven tissue-resident ILC3 play essential roles in intestinal immunity, and targeting IL-23/12 is a promising approach in IBD therapy. OBJECTIVE: We set out to define the role of 1α,25-dihydroxy vitamin D3 (1,25D) in regulating functional responses of human mucosal ILC3 to IL-23 plus IL-1β stimulation. METHODS: Transcriptomes of sorted tonsil ILC3 were assessed by microarray analysis...
April 19, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28416643/can-serum-cytokine-profile-discriminate-irritant-induced-and-allergen-induced-symptoms-a-cross-sectional-study-in-workers-mostly-exposed-to-laboratory-animals
#2
Muriel Lemaire, Anne Oppliger, Philipp Hotz, Jean-Christophe Renauld, Julia Braun, Marion Maggi, Fabio Barresi, Peter Schmid-Grendelmeier, François Huaux, Holger Dressel
BACKGROUND: In workers exposed mostly to laboratory animals (LA), symptoms may be due to irritants or allergens. Correct aetiological diagnosis is important for health surveillance. OBJECTIVES: This study aims to test whether work-related (WR) allergen-induced symptoms are associated with a cytokine profile distinct from that due to irritants. METHODS: In a cross-sectional study (n=114), WR respiratory and/or skin symptoms were assessed through a standardised clinical examination and sensitisation to rat and/or mouse allergen determined by serum immunoglobulin E...
April 17, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28413047/a-homolog-of-teleostean-signal-transducer-and-activator-of-transcription-3-stat3-from-rock-bream-oplegnathus-fasciatus-structural-insights-transcriptional-modulation-and-subcellular-localization
#3
S D N K Bathige, William Shanthakumar Thulasitha, Navaneethaiyer Umasuthan, J D H E Jayasinghe, Qiang Wan, Bo-Hye Nam, Jehee Lee
Signal transducer and activator of transcription 3 (STAT3) is one of the crucial transcription factors in the Janus kinase (JAK)/STAT signaling pathway, and it was previously considered as acute phase response factor. A number of interleukins (ILs) such as IL-5, IL-6, IL-9, IL-10, IL-12, and IL-22 are known to be involved in activation of STAT3. In addition, various growth factors and pathogenic or oxidative stresses mediate the activation of a wide range of functions via STAT3. In this study, a STAT3 homolog was identified and functionally characterized from rock bream (RbSTAT3), Oplegnathus fasciatus...
April 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28410452/notch-signaling-regulates-circulating-t-helper-22-cells-in-patients-with-chronic-hepatitis-c
#4
Ben-Chun Jiang, Xin Liu, Xiao-Hong Liu, Zhen-Sheng-Nan Li, Guang-Ze Zhu
Notch signaling enhanced the response of interleukin (IL)-22-producing CD4(+) T cells that were defined as T helper 22 (Th22) cells, and Notch-aryl hydrocarbon receptor (AhR)-IL-22 axis fine-tuned inflammatory response. Previous studies have demonstrated that both Notch signaling and Th22 cells took part in the pathogenesis of chronic hepatitis C virus (HCV) infection. Thus, in this study, we aimed at examining the regulatory role of Notch signaling in Th22 cells in HCV infection. A total of 59 patients with chronic hepatitis C and 22 normal controls (NCs) were enrolled in this study...
April 14, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28409653/constitutive-expression-of-il-22-in-the-human-intervertebral-disc-and-its-reduction-by-exposure-to-pro-inflammatory-cytokines-in-vitro
#5
H E Gruber, E Marrero, J A Ingram, G L Hoelscher, E N Hanley
The importance of cytokines in disc degeneration is well recognized. Little is known about IL-22 expression in the human intervertebral disc. We investigated IL-22 immuno-localization in disc tissue, and molecular expression and production of IL-22 by annulus cells cultured in three-dimensional (3D) culture. We examined human disc tissue using immunohistochemistry and we cultured isolated annulus cells in 3D to analyze IL-22 expression and production, and its receptor, IL-22R, in conditioned media. Ingenuity pathway analysis (IPA) also was used to identify significant gene expression networks within the molecular data...
2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28403910/topical-application-of-jaungo-in-atopic-dermatitis-patients-study-protocol-for-a-randomized-controlled-trial
#6
Younghee Yun, Youme Ko, Jin-Hyang Ahn, Bo-Hyoung Jang, Kyuseok Kim, Seong-Gyu Ko, Inhwa Choi
BACKGROUND: Atopic dermatitis (AD) is a common pruritic inflammatory skin disease with increasing prevalence. It can manifest with many different clinical phenotypes; however, in its chronic stage, hyperpigmentation, excoriation, lichenification, and dryness are the main symptoms. Jaungo comprises two herbs, Lithospermi radix and Angelica gigantis radix, and three carrier oils, and is an approved herbal ointment for xerosis cutis in Korea. In past studies, we demonstrated that Jaungo had anti-inflammatory and antiallergic activity in in vitro and in vivo AD models; however, there are few relevant randomized controlled clinical trials on Jaungo in AD...
April 12, 2017: Trials
https://www.readbyqxmd.com/read/28393368/increased-levels-of-the-t-helper-22-associated-cytokine-interleukin-22-and-transcription-factor-aryl-hydrocarbon-receptor-in-patients-with-periodontitis-are-associated-with-osteoclast-resorptive-activity-and-severity-of-the-disease
#7
J Díaz-Zúñiga, S Melgar-Rodríguez, L Rojas, C Alvarez, G Monasterio, P Carvajal, R Vernal
BACKGROUND AND OBJECTIVE: Two new T-helper (Th) phenotypes have been recently described and named Th9 and Th22 lymphocytes; however, their role in the pathogenesis of periodontitis remains unclear. This study was aimed to assess whether Th9 and Th22 lymphocytes, through interleukin (IL)-9 and IL-22 production, respectively, are associated with the severity of periodontitis and bone resorption. MATERIAL AND METHODS: Gingival crevicular fluid samples and biopsies were obtained from patients with moderate-to-advanced chronic periodontitis and gingivitis, and healthy controls...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28393233/assessment-of-th17-lymphocytes-and-cytokine-il%C3%A2-17a-in-epithelial-ovarian-tumors
#8
Izabela Winkler, Maria Pyszniak, Katarzyna Pogoda, Andrzej Semczuk, Marek Gogacz, Paweł Miotla, Aneta Adamiak, Dorota Darmochwal-Kolarz, Tomasz Rechberger, Jacek Tabarkiewicz
The present study was carried out to assess the percentage of T helper 17 (Th17) lymphocytes in blood and tissue and IL-17A serum concentrations in patients with epithelial ovarian tumors. Two isoforms, IL-17A and IL-17F, as well as IL-21 and IL-22, were simultaneously investigated. The study group consisted of 60 women affected by epithelial ovarian tumors (benign, borderline and malignant) and 20 women without ovarian pathology as a control group. The evaluation of the percentage of Th17 cells secreting IL-17A, IL-17F, IL-21 and IL-22 in peripheral blood and tumor tissues was performed using flow cytometry applying a Th17 cytokine staining panel...
April 6, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28387835/coxiella-burnetii-isolates-originating-from-infected-cattle-induce-a-more-pronounced-pro-inflammatory-cytokine-response-compared-to-isolates-from-infected-goats-and-sheep
#9
Anne Ammerdorffer, Runa Kuley, Annemieke Dinkla, Leo A B Joosten, Rudolf Toman, Hendrik-Jan Roest, Tom Sprong, Johanna M Rebel
Coxiella burnetii is the causative agent of Q fever. Although the prevalence of C. burnetii in cattle is much higher than in goats and sheep, infected cattle are rarely associated with human outbreaks. We investigated whether the immune response of humans differs after contact with C. burnetii isolates from different host origins or with different multi-locus variable number of tandem repeat analysis (MLVA) genotypes.Cytokine responses were measured in human peripheral blood mononuclear cells (PBMCs) stimulated with 16 C...
April 6, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28383063/rosmarinic-acid-suppresses-colonic-inflammation-in-dextran-sulphate-sodium-dss-induced-mice-via-dual-inhibition-of-nf-%C3%AE%C2%BAb-and-stat3-activation
#10
Bo-Ram Jin, Kyung-Sook Chung, Se-Yun Cheon, Minho Lee, Soonjae Hwang, Sam Noh Hwang, Ki-Jong Rhee, Hyo-Jin An
Ulcerative colitis (UC), a type of inflammatory bowel disease (IBD), is a chronic inflammatory disorder of the colon. Although UC is generally treated with anti-inflammatory drugs or immunosuppressants, most of these treatments often prove to be inadequate. Rosmarinic acid (RA) is a phenolic ester included in various medicinal herbs such as Salvia miltiorrhiz and Perilla frutescens. Although RA has many biological and pharmacological activities, the anti-inflammatory effect of RA in colonic tissue remains unclear...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28373766/antioxidant-axis-nrf2-keap1-are-in-inhibition-of-alcoholic-liver-fibrosis-by-il-22
#11
Ya-Hui Ni, Li-Juan Huo, Ting-Ting Li
AIM: To explore the effect of interleukin (IL)-22 on in vitro model of alcoholic liver fibrosis hepatic stellate cells (HSCs), and whether this is related to regulation of Nrf2-keap1-ARE. METHODS: HSC-T6 cells were incubated with 25, 50, 100, 200 and 400 μmol/L acetaldehyde. After 24 and 48 h, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used to detect proliferation of HSCs to choose the best concentration and action time. We used the optimal concentration of acetaldehyde (200 μmol/L) to stimulate HSCs for 24 h, and treated the cells with a final concentration of 10, 20 or 50 ng/mL IL-22...
March 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28363907/retinoic-acid-regulates-immune-responses-by-promoting-il-22-and-modulating-s100-proteins-in-viral-hepatitis
#12
Zuliang Jie, Yuejin Liang, Panpan Yi, Hui Tang, Lynn Soong, Yingzi Cong, Kangling Zhang, Jiaren Sun
Although large amounts of vitamin A and its metabolite all-trans retinoic acid (RA) are stored in the liver, how RA regulates liver immune responses during viral infection remains unclear. In this study, we demonstrated that IL-22, mainly produced by hepatic γδ T cells, attenuated liver injury in adenovirus-infected mice. RA can promote γδ T cells to produce mTORC1-dependent IL-22 in the liver, but inhibits IFN-γ and IL-17. RA also affected the aptitude of T cell responses by modulating dendritic cell (DC) migration and costimulatory molecule expression...
March 31, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28359987/developmental-options-and-functional-plasticity-of-innate-lymphoid-cells
#13
REVIEW
Ai Ing Lim, Thomas Verrier, Christian Aj Vosshenrich, James P Di Santo
Innate lymphoid cells (ILCs) are lineage- and antigen receptor-negative lymphocytes including natural killer (NK) cells and at least three distinguishable cell subsets (ILC1, ILC2, ILC3) that rapidly produce cytokines (IFN-γ, IL-5, IL-13, IL-17A, IL-22) upon activation. As such, ILCs can act as first-line defenders in the context of infection, inflammation and cancer. Because of the strong conservation between the expression of key transcription factors that can drive signature cytokine outputs in ILCs and differentiated helper T cells, it has been proposed that ILCs represent innate counterparts of the latter...
March 27, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28358365/madecassic-acid-the-contributor-to-the-anti-colitis-effect-of-madecassoside-enhances-the-shift-of-th17-toward-treg-cells-via-the-ppar%C3%AE-ampk-acc1-pathway
#14
Xiaotian Xu, Yuhui Wang, Zhifeng Wei, Wenhui Wei, Peng Zhao, Bei Tong, Yufeng Xia, Yue Dai
The imbalance between Th17 and Treg cells substantially contributes to the intestinal immune disturbance and subsequent tissue injury in ulcerative colitis. The triterpenoid-rich fraction of Centella asiatica was able to ameliorate dextran sulfate sodium-induced colitis in mice. Here we explored its active ingredient and underlying mechanism with a focus on restoring the Th17/Treg balance. The four main triterpenoids occurring in C. asiatica were shown to attenuate colitis in mice by oral administration. The most effective ingredient madecassoside lost anti-colitis effect when applied topically in the colon, and madecassic acid was recognized to be the active form of madecassoside...
March 30, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28356382/limited-presence-of-il-22-binding-protein-a-natural-il-22-inhibitor-strengthens-psoriatic-skin-inflammation
#15
Jérôme C Martin, Kerstin Wolk, Gaëlle Bériou, Ahmed Abidi, Ellen Witte-Händel, Cédric Louvet, Georgios Kokolakis, Lucile Drujont, Laure Dumoutier, Jean-Christophe Renauld, Robert Sabat, Régis Josien
Psoriasis is a chronic inflammatory disease resulting from dysregulated immune activation associated with a large local secretion of cytokines. Among them, IL-22 largely contributes to epithelial remodeling and inflammation through inhibiting the terminal differentiation of keratinocytes and inducing antimicrobial peptides and selected chemokines. The activity of IL-22 is regulated by IL-22 binding protein (IL-22BP); however, the expression and role of IL-22BP in psoriatic skin has remained unknown so far. Here we showed that nonaffected skin of psoriasis patients displayed lower expression of IL-22BP than skin of healthy controls...
March 29, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28348565/a-novel-heterozygous-mutation-in-the-stat1-sh2-domain-causes-chronic-mucocutaneous-candidiasis-atypically-diverse-infections-autoimmunity-and-impaired-cytokine-regulation
#16
Kornvalee Meesilpavikkai, Willem A Dik, Benjamin Schrijver, Nicole M A Nagtzaam, Angelique van Rijswijk, Gertjan J Driessen, Peter J van der Spek, P Martin van Hagen, Virgil A S H Dalm
Chronic mucocutaneous candidiasis (CMC) is a primary immunodeficiency characterized by persistent or recurrent skin and mucosal surface infections with Candida species. Different gene mutations leading to CMC have been identified. These include various heterozygous gain-of-function (GOF) mutations in signal transducer and activator of transcription 1 (STAT1) that are not only associated with infections but also with autoimmune manifestations. Recently, two STAT1 GOF mutations involving the Src homology 2 (SH2) domain have been reported, while so far, over 50 mutations have been described mainly in the coiled coil and the DNA-binding domains...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28345149/t-vaginalis-exosome-like-vesicles-modify-the-cytokine-profile-and-reduce-inflammation-in-parasite-infected-mice
#17
Luis Mario Olmos-Ortiz, Marco Barajas-Mendiola, Miriam Barrios-Rodiles, Laura E Castellano, Sergio Arias-Negrete, Eva E Avila, Patricia Cuéllar-Mata
Trichomonas vaginalis (Tv) is a flagellated parasite commonly spread through sexual transmission. This protozoan initiates a severe inflammatory process, inducing nitric oxide, interleukin-6 (IL-6), IL-8, IL-10, IL-17, and IL-22 production by host immune cells. The parasites elicit these responses by releasing surface lipophosphoglycan, small extracellular vesicles (exosomes) and other factors. Tv exosomes are similar to mammalian exosomes and have been implicated in the modulation of IL-8 secretion by epithelial cells...
March 27, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28337387/pro-and-anti-inflammatory-cytokines-in-children-with-malaria-in-franceville-gabon
#18
Sandrine Lydie Oyegue-Liabagui, Aline Gaëlle Bouopda-Tuedom, Lady Charlène Kouna, Sydney Maghendji-Nzondo, Herman Nzoughe, Nina Tchitoula-Makaya, Irene Pegha-Moukandja, Jean-Bernard Lekana-Douki
Severe Plasmodium falciparum malaria anemia (SMA) is a major cause of mortality in pediatric wards. Variations in inflammatory mediator production play an essential role in disease outcomes. Indeed, several studies have shown the involvement of pro- and anti-inflammatory cytokines such as IFN-γ, IL-6, TNF-α and IL-10 in malaria immunopathology. In other hand the exact role of Th17 cytokines such as IL-17, IL-22 and IL-21 in malaria remains poorly documented. Here, we investigated IFN-γ, TNF-α, IL-6, IL-12, IL-10, IL-4, IL-13, IL-17, IL-22 and IL-21 circulating levels and their association with malaria anemia and parasitemia in Gabonese children...
2017: American Journal of Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28330898/antigen-presenting-human-%C3%AE-%C3%AE-t-cells-promote-intestinal-cd4-t-cell-expression-of-il-22-and-mucosal-release-of-calprotectin
#19
Christopher J Tyler, Neil E McCarthy, James O Lindsay, Andrew J Stagg, Bernhard Moser, Matthias Eberl
The cytokine IL-22 plays a critical role in mucosal barrier defense, but the mechanisms that promote IL-22 expression in the human intestine remain poorly understood. As human microbe-responsive Vγ9/Vδ2 T cells are abundant in the gut and recognize microbiota-associated metabolites, we assessed their potential to induce IL-22 expression by intestinal CD4(+) T cells. Vγ9/Vδ2 T cells with characteristics of APCs were generated from human blood and intestinal organ cultures, then cocultured with naive and memory CD4(+) T cells obtained from human blood or the colon...
May 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28327412/response-of-inos-and-its-relationship-with-il-22-and-stat3-in-macrophage-activity-in-the-polar-forms-of-leprosy
#20
Jorge Rodrigues de Sousa, Raphael Primo Martins de Sousa, Tinara Leila de Souza Aarão, Leonidas Braga Dias, Francisca Regina Oliveira Carneiro, Juarez Antonio Simões Quaresma
Leprosy is a chronic granulomatous infection that manifests as different clinical forms related to the immunological response. The aim of the study was to evaluated the response of IL-22, STAT3, CD68 and iNOS in leprosy skin lesions. The mean number IL-22 positive cells was 12.12±1.90cells/field in the TT form and 31.31±2.91cells/field in the LL form. STAT3 positive cells was 5.29±1.96 cells/field in the TT form, while this number was 11.13±3.48cells/field in the LL form. The mean number of CD68 positive cells was 25...
March 19, 2017: Acta Tropica
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