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https://www.readbyqxmd.com/read/27931975/identification-of-il-17f-frequent-exacerbator-endotype-in-asthma
#1
Fabio L M Ricciardolo, Valentina Sorbello, Anna Folino, Fabio Gallo, Gian Mario Massaglia, Gabriella Favatà, Salvatore Conticello, Davide Vallese, Federica Gani, Mario Malerba, Gert Folkerts, Giovanni Rolla, Mirella Profita, Thais Mauad, Antonino Di Stefano, Giorgio Ciprandi
BACKGROUND: Severe asthma might be associated with neutrophil recruitment and Th17 cytokines over-expression in bronchial biopsies. OBJECTIVE: To study IL-17-related cytokines in nasal/bronchial biopsies from controls and mild (MA)-to-severe (SA) asthmatics in relation to exacerbation rate. METHODS: Inflammatory cells and IL-17A(+), IL-17F(+), IL-21(+), IL-22(+) and IL-23(+) cells were examined by immunohistochemistry (IHC) in cryostat sections of bronchial/nasal biopsies obtained from 33 SA (21 frequent exacerbators (FE)), 31 MA (3 FE) and 14 controls...
December 5, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27930971/losartan-and-dexamethasone-may-inhibit-chemotaxis-to-reduce-the-infiltration-of-th22-cells-in-iga-nephropathy
#2
Chenggen Xiao, Qiaoling Zhou, Xiaozhao Li, Hui Li, Yong Zhong, Ting Meng, Mengyuan Zhu, Hong Sun, Shuang Liu, Rong Tang, Jiaxi Pu, Yan Xu, Ping Xiao
Angiotensin II is considered a major profibrotic factor that is involved in tissue remodeling processes, as the inhibition of Angiotensin II can halt renal inflammatory processes. Dexamethasone, an important anti-inflammatory and immunosuppressive agent, has been widely used to treat renal disease for decades. In this study, we explored the frequency of Th22 cells in a mouse model of IgA nephropathy and compared the possible effects of Losartan and Dexamethasone on Th22 cells. The experiments were performed using 6-week-old BALB/c female mice in an established IgA nephropathy model...
December 5, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27926504/the-immunomodulatory-effects-of-tnf-%C3%AE-inhibitors-on-human-th17-cells-via-ror%C3%AE-t-histone-acetylation
#3
Yi-Ching Lin, Yu-Chih Lin, Cheng-Chin Wu, Ming-Yii Huang, Wen-Chan Tsai, Chih-Hsing Hung, Po-Lin Kuo
The presence of interleukin (IL)-17-related cytokines correlates with rheumatoid arthritis (RA) pathogenesis. Epigenetic modifications, including histone acetylation, regulate gene expression in RA pathogenesis. Tumour necrosis factor-alpha (TNF-α) inhibitors such as etanercept and adalimumab, represent a breakthrough in RA treatment. We aimed to investigate the effects of etanercept and adalimumab on human Th17-polarized cells and the possible intracellular regulators of these effects, including the Th17-specific transcription factors signal transducer, activator of transcription 3 (STAT3), retinoid-related orphan receptor γ-T (RORγt) and epigenetic modification...
December 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/27916093/-protective-effect-of-interleukin-22-against-hyperoxia-induced-lung-injury-in-neonatal-rats
#4
Li Yuan, Xiuxiang Liu, Ruiwei Gao, Jinshuai Ma, Suni Lu, Haihong Zhang
Objective To study the protective effect of interleukin-22 (IL-22) against the hyperoxia-induced lung injury in neonatal SD rats. Methods The neonatal SD rats were randomized into control group, hyperoxia group and IL-22 (10 ng/g) treatment group. Each group was randomly divided into three subgroups of 1, 3, 7 days (n=9). Body mass in every group was detected; lung pathological changes were observed by HE staining; tumor necrosis factor α (TNF-α) in lung tissues was tested by quantitative real-time PCR; and IL-1β in plasma was measured by ELISA...
December 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/27915442/co-exposure-to-low-doses-of-the-food-contaminants-deoxynivalenol-and-nivalenol-has-a-synergistic-inflammatory-effect-on-intestinal-explants
#5
Imourana Alassane-Kpembi, Olivier Puel, Philippe Pinton, Anne-Marie Cossalter, Ting-Chao Chou, Isabelle P Oswald
The global incidence of Fusarium head blight and attendant cereal grains multi-contamination by the trichothecene mycotoxins deoxynivalenol (DON) and nivalenol (NIV) are increasing as a possible result of climate change and inadequate agricultural practices. At the molecular level, these mycotoxins bind to the ribosome, activate the mitogen-activated protein kinase and induce a local and systemic inflammation. DON is of public health concern owing to the narrow margin between exposure and tolerable daily intake...
December 3, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27915228/cytokines-il-17-and-il-22-in-the-host-response-to-infection
#6
Maria Valeri, Manuela Raffatellu
Cytokines IL-17 and IL-22 play pivotal roles in host defense against microbes and in the development of chronic inflammatory diseases. These cytokines are produced by cells that are often located in epithelial barriers, including subsets of T cells and innate lymphoid cells. In general, IL-17 and IL-22 can be characterized as important cytokines in the rapid response to infectious agents, both by recruiting neutrophils and by inducing the production of antimicrobial peptides. Although each cytokine induces an innate immune response in epithelial cells, their functional spectra are generally distinct: IL-17 mainly induces an inflammatory tissue response and is involved in the pathogenesis of several autoimmune diseases, whereas IL-22 is largely protective and regenerative...
December 2, 2016: Pathogens and Disease
https://www.readbyqxmd.com/read/27914457/tumor-necrosis-factor-and-lymphotoxin-in-regulation-of-intestinal-inflammation
#7
REVIEW
E O Gubernatorova, A V Tumanov
Ulcerative colitis and Crohn's disease are the major forms of inflammatory bowel disease. Cytokines of the tumor necrosis factor (TNF) family play an important role in the regulation of intestinal inflammation. In this review, we discuss the function of key cytokines of this family - TNF and lymphotoxin (LT) - in mucosal healing, IgA production, and in control of innate lymphoid cells (ILCs), novel regulators of mucosal homeostasis in the gut. TNF plays a central role in the pathogenesis of inflammatory bowel diseases (IBD)...
November 2016: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/27906073/gut-barrier-structure-mucosal-immunity-and-intestinal-microbiota-in-the-pathogenesis-and-treatment-of-hiv-infection
#8
REVIEW
Camilla Tincati, Daniel C Douek, Giulia Marchetti
Over the past 10 years, extensive work has been carried out in the field of microbial translocation in HIV infection, ranging from studies on its clinical significance to investigations on its pathogenic features. In the present work, we review the most recent findings on this phenomenon, focusing on the predictive role of microbial translocation in HIV-related morbidity and mortality, the mechanisms by which it arises and potential therapeutic approaches. From a clinical perspective, current work has shown that markers of microbial translocation may be useful in predicting clinical events in untreated HIV infection, while conflicting data exist on their role in cART-experienced subjects, possibly due to the inclusion of extremely varied patient populations in cohort studies...
April 11, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905482/pharmacologic-modulation-of-ror%C3%AE-t-translates-to-efficacy-in-preclinical-and-translational-models-of-psoriasis-and-inflammatory-arthritis
#9
Xiaohua Xue, Pejman Soroosh, Aimee De Leon-Tabaldo, Rosa Luna-Roman, Marciano Sablad, Natasha Rozenkrants, Jingxue Yu, Glenda Castro, Homayon Banie, Wai-Ping Fung-Leung, Luis Santamaria-Babi, Thomas Schlueter, Michael Albers, Kristi Leonard, Alison L Budelsky, Anne M Fourie
The IL-23/IL-17 pathway is implicated in autoimmune diseases, particularly psoriasis, where biologics targeting IL-23 and IL-17 have shown significant clinical efficacy. Retinoid-related orphan nuclear receptor gamma t (RORγt) is required for Th17 differentiation and IL-17 production in adaptive and innate immune cells. We identified JNJ-54271074, a potent and highly-selective RORγt inverse agonist, which dose-dependently inhibited RORγt-driven transcription, decreased co-activator binding and promoted interaction with co-repressor protein...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27902779/differential-cytokine-gene-expression-in-granulomas-from-lungs-and-lymph-nodes-of-cattle-experimentally-infected-with-aerosolized-mycobacterium-bovis
#10
Mitchell V Palmer, Tyler C Thacker, W Ray Waters
The hallmark lesion of tuberculosis in humans and animals is the granuloma. The granuloma represents a distinct host cellular immune response composed of epithelioid macrophages, lymphocytes, and multinucleated giant cells, often surrounding a caseous necrotic core. Within the granuloma, host-pathogen interactions determine disease outcome. Factors within the granulomas such as cytokines and chemokines drive cell recruitment, activity, function and ultimately the success or failure of the host's ability to control infection...
2016: PloS One
https://www.readbyqxmd.com/read/27900483/indigo-naturalis-ameliorates-murine-dextran-sodium-sulfate-induced-colitis-via-aryl-hydrocarbon-receptor-activation
#11
Shoichiro Kawai, Hideki Iijima, Shinichiro Shinzaki, Satoshi Hiyama, Toshio Yamaguchi, Manabu Araki, Shuko Iwatani, Eri Shiraishi, Akira Mukai, Takahiro Inoue, Yoshito Hayashi, Masahiko Tsujii, Daisuke Motooka, Shota Nakamura, Tetsuya Iida, Tetsuo Takehara
BACKGROUND: Indigo Naturalis (IN) is used as a traditional herbal medicine for ulcerative colitis (UC). However, the mechanisms of action of IN have not been clarified. We aimed to evaluate the efficacy of IN for ameliorating colonic inflammation. We further investigated the mechanisms of action of IN. METHODS: Colitis severity was assessed in dextran sodium sulfate-induced colitis and trinitrobenzene sulfonic acid-induced colitis models with or without the oral administration of IN or indigo, which is a known major component of IN...
November 29, 2016: Journal of Gastroenterology
https://www.readbyqxmd.com/read/27891128/immune-imbalances-in-non-alcoholic-fatty-liver-disease-from-general-biomarkers-and-neutrophils-to-interleukin-17-axis-activation-and-new-therapeutic-targets
#12
REVIEW
Feliciano Chanana Paquissi
Non-alcoholic fatty liver disease (NAFLD) is an increasing problem worldwide and is associated with negative outcomes such as cirrhosis, hepatocellular carcinoma, insulin resistance, diabetes, and cardiovascular events. Current evidence shows that the immune response has an important participation driving the initiation, maintenance, and progression of the disease. So, various immune imbalances, from cellular to cytokines levels, have been studied, either for better compression of the disease pathophysiology or as biomarkers for severity assessment and outcome prediction...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27886396/5-ala-mediated-photodynamic-therapy-reduces-the-parasite-load-in-mice-infected-with-leishmania-braziliensis
#13
Danila Malheiros Souza, Polyanna Miranda Alves, Mona Lisa Fabiana Silva, Tony Paiva Paulino, Henrique Ovidio Coraspe, Mônica Miguel Sawan Mendonça, Betânia Maria Ribeiro, Marcos Vinicius da Silva, Virmondes Rodrigues Júnior, Denise Bertulucci Rocha Rodrigues
INTRODUCTION: Photodynamic therapy (PDT) has proven to be an effective alternative for the treatment of cutaneous leishmaniasis. Skin lesions consist of ulcers with well-defined raised edges, and granular floor. Th1 immune response is the protective profile in patients infected with Leishmania. In the present study, the photodynamic therapy with 5-aminolevulinic acid, the parasitic load, and the modulation of the immune response were evaluated in mice infected with Leishmania braziliensis...
November 25, 2016: Parasite Immunology
https://www.readbyqxmd.com/read/27885166/the-role-of-interleukin-33-in-chronic-rhinosinusitis
#14
Dong-Kyu Kim, Hong Ryul Jin, Kyoung Mi Eun, Ji-Hun Mo, Seong H Cho, Sohee Oh, David Cho, Dae Woo Kim
RATIONALE: Interleukin (IL)-33, a new member of the IL-1 family, is constitutively expressed in epithelial tissues and lymphoid organs and plays an important role in the pathogenesis of allergic disease. However, the role of IL-33 in chronic rhinosinusitis with nasal polyps (CRSwNP) remains unclear. OBJECTIVE: To investigate the role of IL-33 in the pathophysiology of CRSwNP. METHODS: We investigated IL-33 expression and its cellular origins in the nasal polyps (NPs) of human subjects by immunohistochemistry (IHC), quantitative reverse transcription PCR (qRT-PCR), and multiplex cytokine assays...
November 24, 2016: Thorax
https://www.readbyqxmd.com/read/27884809/construction-of-a-streptococcus-agalactiae-phob-mutant-and-evaluation-of-its-potential-as-an-attenuated-modified-live-vaccine-in-golden-pompano-trachinotus-ovatus
#15
Xiaohui Cai, Bei Wang, Yinhui Peng, Yuan Li, Yishan Lu, Yucong Huang, Jichang Jian, Zaohe Wu
Streptococcus agalactiae is a Gram-positive pathogen that can survive inside professional phagocytes and nonphagocytic cells to cause septicemia and meningoencephalitis in freshwater and marine fish. However, vaccines based on extracellular products (ECP) and formalin-killed whole S. agalactiae cells, as well as subunit vaccine are unable to protect fish from infection by variant serotypes S. agalactiae. The search for live attenuated vaccine with highly conserved and virulent-related genes is essential for producing a vaccine to help understand and control streptococcosis In this study, the phoB gene was cloned from pathogenic S...
November 21, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27883085/phenotypic-and-functional-characterization-of-the-major-lymphocyte-populations-in-the-fruit-eating-bat-pteropus-alecto
#16
Julia María Martínez Gómez, Pravin Periasamy, Charles-Antoine Dutertre, Aaron Trent Irving, Justin Han Jia Ng, Gary Crameri, Michelle L Baker, Florent Ginhoux, Lin-Fa Wang, Sylvie Alonso
The unique ability of bats to act as reservoir for viruses that are highly pathogenic to humans suggests unique properties and functional characteristics of their immune system. However, the lack of bat specific reagents, in particular antibodies, has limited our knowledge of bat's immunity. Using cross-reactive antibodies, we report the phenotypic and functional characterization of T cell subsets, B and NK cells in the fruit-eating bat Pteropus alecto. Our findings indicate the predominance of CD8(+) T cells in the spleen from wild-caught bats that may reflect either the presence of viruses in this organ or predominance of this cell subset at steady state...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27881938/are-interleukin-15-and-22-a-new-pathogenic-factor-in-pustular-palmoplantar-psoriasis
#17
Aleksandra Lesiak, Igor Bednarski, Marta Pałczyńska, Ewelina Kumiszcza, Marzena Kraska-Gacka, Anna Woźniacka, Joanna Narbutt
INTRODUCTION: Pustular palmoplantar psoriasis (PPP) is a rare type of psoriasis affecting mainly distal parts of the limbs. Despite numerous theories about etiology of PPP, the pathogenesis still remains unclear. Recent data indicate that interleukin (IL)-15, IL-17 and IL-22 enhance a proinflammatory response in certain skin inflammatory diseases such as psoriasis and atopic dermatitis. There is also evidence that anti-endomysial (anti-EMA) and anti-gliadin (AGA) antibodies are engaged in PPP development...
October 2016: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/27878721/evaluation-in-vitro-of-immunoregulatory-cytokines-secretion-by-dendritic-cells-in-mountain-skiers
#18
V S Evstratova, D B Nikityuk, N A Riger, N V Fedyanina, R A Khanferyan
In vitro production of immunoregulatory cytokines (IFN-α, IL-31, TNF-β, IL-17A, IL-7, IL-1RA, IL-1α, IL-10, IL-15, IL-21, IL-22, IL-23, IL-27, and IL-9) by dendritic cell cultures was compared in ski athletes and healthy donors. Effect of prolonged intense physical exercise on secretory activity of immune cells was investigated. In both groups, secretion of IL-1RA, IL-10, IL-1α by dendritic cells was revealed, but there were significant differences in IL-1RA, IL-1α content (p<0.05) with lower level in the group of athletes...
November 23, 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27872753/multifunctional-thioredoxin-like-protein-from-the-gastrointestinal-parasitic-nematodes-strongyloides-ratti-and-trichuris-suis-affects-mucosal-homeostasis
#19
Dana Ditgen, Emmanuela M Anandarajah, Jan Hansmann, Dominic Winter, Guido Schramm, Klaus D Erttmann, Eva Liebau, Norbert W Brattig
The cellular redox state is important for the regulation of multiple functions and is essential for the maintenance of cellular homeostasis and antioxidant defense. In the excretory/secretory (E/S) products of Strongyloides ratti and Trichuris suis sequences for thioredoxin (Trx) and Trx-like protein (Trx-lp) were identified. To characterize the antioxidant Trx-lp and its interaction with the parasite's mucosal habitat, S. ratti and T. suis Trx-lps were cloned and recombinantly expressed. The primary antioxidative activity was assured by reduction of insulin and IgM...
2016: Journal of Parasitology Research
https://www.readbyqxmd.com/read/27872237/flagellin-mediated-protection-against-intestinal-yersinia-pseudotuberculosis-infection-does-not-require-interleukin-22
#20
Rémi Porte, Laurye Van Maele, Natalia Muñoz-Wolf, Benoit Foligné, Laure Dumoutier, Julien Tabareau, Delphine Cayet, Pierre Gosset, Nicolas Jonckheere, Isabelle Van Seuningen, A José Chabalgoity, Michel Simonet, Mohamed Lamkanfi, Jean-Christophe Renauld, Jean-Claude Sirard, Christophe Carnoy
Signaling through toll-like receptors (TLRs), the main receptors in innate immunity, is essential for the defense of mucosal surfaces. It was previously shown that systemic TLR5 stimulation by bacterial flagellin induces an immediate, transient interleukin-22 (IL-22)-dependent antimicrobial response to bacterial or viral infections of the mucosa. This process was dependent on the activation of type 3 innate lymphoid cells (ILCs). The objective of the present study was to analyze the effects of flagellin treatment in a murine model of oral infection with Yersinia pseudotuberculosis (an invasive, Gram-negative, enteropathogenic bacterium that targets the small intestine)...
November 21, 2016: Infection and Immunity
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