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https://www.readbyqxmd.com/read/28811075/regulatory-t-cell-deficient-scurfy-mice-exhibit-a-th2-m2-like-inflammatory-response-in-the-skin
#1
Stefanie Haeberle, Verena Raker, Jessica Haub, Yong O Kim, Shih-Yen Weng, Osman K Yilmaz, Alexander Enk, Kerstin Steinbrink, Detlef Schuppan, Eva N Hadaschik
BACKGROUND: Scurfy mice have a functional defect in regulatory T cells (Treg), which leads to lethal multi-organ inflammation. The missing Treg function results in uncontrolled autoimmune cellular and humoral inflammatory responses. We and others have previously shown that during the course of disease scurfy mice develop severe skin inflammation and autoantibodies including anti-nuclear autoantibodies (ANA). OBJECTIVE: Autoimmune skin inflammation and ANA are hallmarks for the diagnosis of autoimmune connective tissue diseases; therefore we analyzed scurfy mice for typical signs of these diseases...
July 13, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28810531/mir-146a-overexpression-effectively-improves-experimental-allergic-conjunctivitis-through-regulating-cd4-cd25-t-cells
#2
Yang Yang, Xiaolong Yin, Jinglin Yi, Xiaowei Peng
OBJECTIVE: To study the mechanism of miR-146a in the regulation of allergic conjunctivitis (AC) through CD4(+)CD25(-)T cells. METHODS: BALB/c mice were sensitized with ragweed pollen (RW) and alum, and then challenged with RW. Eosinophil infiltration was determined using Giemsa assay. ELISA assay was performed to examine the level of antigen-specific IgE in the serum and cytokine levels in splenocytes. The expression of miR-146a was measured by qRT-PCR. Flow cytometric analysis was used to analyze the percentage of CD4(+)CD25(-)T cells and Tregs...
August 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28808975/isolation-of-group-2-innate-lymphoid-cells-from-mouse-lungs
#3
Claudia U Duerr, Jörg H Fritz
The recently described group 2 innate lymphoid cells (ILC2) exert critical roles in type 2 immune responses, epithelial repair at mucosal tissues and metabolic homeostasis. ILC2 release large amounts of type 2 cytokines such as interleukin 4 (IL-4), IL-5, and IL-13, driving type 2 immunity such as the defense against helminths. However, if not tightly regulated ILC2 can trigger unwanted type 2 immunopathologies including allergic airway inflammation, airway hyper-responsiveness, and atopic dermatitis. Viral respiratory tract infections, archetypal triggers of type 1 immune responses, often give rise to pulmonary type 2 immunopathologies such as asthma and asthma exacerbations...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28807497/characterisation-of-the-porcine-cytokines-which-activate-the-cd131%C3%AE-c-common-sub-unit-for-potential-immune-augmentation
#4
G Stephenson, K R Morris, T E O'Neil, M P Bruce, A D G Strom, A G D Bean
Early acting cytokines and growth factors such as those of the CD131 βc subunit, may offer an alternative method to the current use of antibiotics and chemicals such as anthelmintics in maintaining Porcine (Po) health. Thus far, the recombinant Po (rPo) Granulocyte-macrophage colony-stimulating factor (GM-CSF), rPo interleukin-3 (IL-3) and rPo interleukin-5 (IL-5) proteins have been identified and cloned and the biological activity of each cytokine has been confirmed in vitro, however, in vivo immune system regulation and hematopoietic stem cell (HSC) augmentation are regulated by numerous cytokines and cellular signals within the bone marrow (BM) niche...
August 11, 2017: Cytokine
https://www.readbyqxmd.com/read/28805233/analytic-and-dynamic-secretory-profile-of-patient-derived-cytokine-induced-killer-cells
#5
Giulia Mesiano, Roberta Zini, Giulia Montagner, Nicoletta Bianchi, Rossella Manfredini, Antonella Chillemi, Massimo Aglietta, Giovanni Grignani, Ilaria Lampronti, Erika Fiorino, Fabio Malavasi, Dario Sangiolo, Roberto Gambari, Davide Ferrari
Adoptive immunotherapy with Cytokine Induced Killer (CIK) cells has shown antitumor activity against several kinds of cancers in preclinical models and clinical trials. CIK cells are a subset of ex vivo expanded T lymphocytes with T-NK phenotype and MHC-unrestricted antitumor activity. Literature provides scanty information on cytokines, chemokines and growth factors secreted by CIK cells. Therefore, we investigated the secretory profile of CIK cells generated from tumor patients. The secretome analysis was performed at specific time points (day 1, day 14 and day 21) of CIK cells expansion...
August 9, 2017: Molecular Medicine
https://www.readbyqxmd.com/read/28803045/discovery-of-novel-3-hydroxyalkoxy-2-alkylchromen-4-one-analogs-as-interleukin-5-inhibitors
#6
Pulla Reddy Boggu, Eeda Venkateswararao, Manoj Manickam, Youngsoo Kim, Sang-Hun Jung
A series of novel chromen-4-one analogs 9a-d and 10a-u was designed, synthesized and evaluated for their IL-5 inhibitory activity. Most of the chromen-4-one analogs showed strong inhibitory activity in low micro molar potency. Among them, 5-(cyclohexylmethoxy)-3-(3-hydroxypropoxy)-2-isopropyl-4H-chromen-4-one (10t, 90.0% inhibition at 30 μM, IC50 = 5.5 μM, CLogP = 4.76887) and 2-cyclohexyl-5-(cyclohexylmethoxy)-3-(3-hydroxypropoxy)-4H-chromen-4-one (10u, 95.5% inhibition at 30 μM, IC50 = 3.0 μM, CLogP = 5...
July 29, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28801784/prior-repeated-stress-attenuates-cold-induced-immunomodulation-associated-with-browning-in-mesenteric-fat-of-rats
#7
P Vargovic, M Laukova, J Ukropec, G Manz, R Kvetnansky
Continuous exposure to cold leads to activation of adaptive thermogenesis in brown adipose tissue but also to induction of brown/beige cell phenotype in white adipose tissue. The aim of this work was to investigate whether prior exposure to immobilization (IMO) stress may affect immune response associated with adipocyte "browning" in mesenteric adipose tissue (mWAT). In the first experiment, Sprague-Dawley rats were exposed to acute (3 h) or prolonged (7 days) cold exposure (4 ± 1 °C). 7-day cold stimulated gene expression of uncoupling protein 1 and other "browning"-associated factors...
August 11, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28801365/overexpression-of-satb1-gene-inhibits-the-immunosuppressive-function-of-regulatory-t-cells-in-chronic-hepatitis-b
#8
Yiyin Wang, Xuefen Li, Haishen Kong, Qiaoyun Zhu, Yuejiao Dong, Xia Liu, Yu Chen
Special AT-rich sequence-binding protein 1 (SATB1) is a class of nuclear matrix binding protein expressed by T cells and plays an important role in regulatory T cells (Tregs) mediated immune regulation. The immunosuppressive function of Tregs in chronic hepatitis B (CHB) being inhibited by SATB1 has been shown in our previous studies. The objective of this study was to learn the impact of SATB1 on the cellular immune function of CHB. SATB1 isolated from human peripheral blood mononuclear cells (PBMCs) was used as a template of PCR and its product was connected to vector PLV-EF1α-EGFP-N...
August 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28791259/toxoplasma-co-infection-prevents-th2-differentiation-and-leads-to-a-helminth-specific-th1-response
#9
Norus Ahmed, Timothy French, Sebastian Rausch, Anja Kühl, Katrin Hemminger, Ildiko R Dunay, Svenja Steinfelder, Susanne Hartmann
Nematode infections, in particular gastrointestinal nematodes, are widespread and co-infections with other parasites and pathogens are frequently encountered in humans and animals. To decipher the immunological effects of a widespread protozoan infection on the anti-helminth immune response we studied a co-infection with the enteric nematode Heligmosomoides polygyrus in mice previously infected with Toxoplasma gondii. Protective immune responses against nematodes are dependent on parasite-specific Th2 responses associated with IL-4, IL-5, IL-13, IgE, and IgG1 antibodies...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28789560/milk-fermented-by-lactobacillus-species-from-brazilian-artisanal-cheese-protect-germ-free-mice-against-salmonella-typhimurium-infection
#10
L B Acurcio, S H C Sandes, R W Bastos, F M Sant'anna, S H S P Pedroso, D C Reis, Á C Nunes, G D Cassali, M R Souza, J R Nicoli
Ingestion of milks fermented by Lactobacillus strains showing probiotic properties is an important tool to maintain gastrointestinal health. In this study, Lactobacillus rhamnosus D1 and Lactobacillus plantarum B7, isolated from Brazilian artisanal cheese, were used as starters for the functional fermented milks to assess their probiotic properties in a gnotobiotic animal model. Male germ-free Swiss mice received a single oral dose of milk fermented by each sample, and were challenged with Salmonella Typhimurium five days afterwards...
August 9, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28783701/ppar-%C3%AE-promotes-type-2-immune-responses-in-allergy-and-nematode-infection
#11
Ting Chen, Christopher A Tibbitt, Xiaogang Feng, Julian M Stark, Leona Rohrbeck, Lisa Rausch, Saikiran K Sedimbi, Mikael C I Karlsson, Bart N Lambrecht, Gunilla B Karlsson Hedestam, Rudi W Hendriks, Benedict J Chambers, Susanne Nylén, Jonathan M Coquet
A hallmark of immunity to worm infections and many allergies is a strong type 2 immune response. This is characterized by the production of cytokines interleukin-5 (IL-5) and IL-13 by adaptive T helper 2 (TH2) cells and/or type 2 innate lymphoid cells. Peroxisome proliferator activated receptor-γ (PPAR-γ) is typically regarded as an anti-inflammatory factor. We report that TH2 cells express high levels of PPAR-γ in response to the allergen house dust mite and after infection with the parasite Heligmosomoides polygyrus Mice lacking PPAR-γ in T cells failed to effectively differentiate into IL-5- and IL-13-secreting cells and, hence, did not develop TH2 cell-associated pathologies, including goblet cell metaplasia and eosinophilia, in response to allergen challenge...
March 10, 2017: Science Immunology
https://www.readbyqxmd.com/read/28782757/osthole-treatment-ameliorates-th2-mediated-allergic-asthma-and-exerts-immunomodulatory-effects-on-dendritic-cell-maturation-and-function
#12
Chen-Yuan Chiang, Chen-Chen Lee, Chia-Kwung Fan, Huei-Mei Huang, Bor-Luen Chiang, Yueh-Lun Lee
Osthole, an active component of Chinese herbal medicines, reportedly possesses various pharmacological properties and has potential therapeutic applications. This study explored the anti-allergic effects of osthole in asthmatic mice and investigated the immunomodulatory actions of osthole on dendritic cells (DCs) and T cells. Herein, we show that oral administration of osthole to BALB/c mice after ovalbumin (OVA) sensitization ameliorated all of the cardinal features of T helper 2 (Th2)-mediated allergic asthma; namely, the production of OVA-specific immunoglobulin E, airway hyperresponsiveness, airway inflammation and the production of Th2-type cytokines including interleukin (IL)-4, IL-5 and IL-13...
August 7, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28782273/up-regulation-of-transient-receptor-potential-vanilloid-trpv-and-down-regulation-of-brain-derived-neurotrophic-factor-bdnf-expression-in-patients-with-functional-dyspepsia-fd
#13
C K Y Cheung, L L Lan, M Kyaw, A D P Mak, A Chan, Y Chan, J C Y Wu
BACKGROUND: The role of immune activation in Functional Dyspepsia (FD) patients without previous infection is unclear. We compare the gastric and circulating brain-derived neurotropic factor (BDNF), receptor potential vanilloid type (TRPV) families and various cytokines in FD patients. METHODS: Consecutive adult FD patients (Rome III) with no recent history of gastroenteritis and asymptomatic healthy controls were recruited for upper endoscopy. Subjects with GERD and IBS as predominant symptoms, diabetes mellitus, current or previous Helicobacter pylori infection, psychiatric illness and recent use of NSAID or PPI were excluded...
August 7, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28775364/dnp2-ctctla-4-inhibits-german-cockroach-extract-induced-allergic-airway-inflammation-and-hyper-responsiveness-via-inhibition-of-th2-responses
#14
Sangho Lim, Jung Ho Sohn, Ja-Hyun Koo, Jung-Won Park, Je-Min Choi
German cockroaches are major household allergens that can trigger allergic airway inflammatory diseases with sensitive T-cell responses. Although the use of immune modulatory biologics, such as antibodies, to mediate allergic responses has recently been examined, only systemic administration is available because of the size limitations on intranasal administration. Here we utilized a cell-permeable peptide, dNP2, to deliver the cytoplasmic domain of cytotoxic T-lymphocyte antigen-4 (ctCTLA-4) through the airway epithelium to modulate Th2 responses in a German cockroach extract (GCE)-induced allergic airway inflammation model...
August 4, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28771101/natural-helper-cells-mediate-respiratory-syncytial-virus-induced-airway-inflammation-by-producing-type-2-cytokines-in-an-il-33-dependent-manner
#15
Xu Han, Ruonan Chai, Feifei Qi, Song Bai, Yulin Cui, Yuee Teng, Beixing Liu
AIM: Type 2 cytokine production during respiratory virus infection is considered to be linked with asthma exacerbation. As potent Th2 cytokine producers, natural helper (NH) cells play a key role in influenza virus-induced airway hyper-responsiveness. However, it is unclear whether NH cells contribute to respiratory syncytial virus (RSV)-induced airway inflammation, and how the cytokine profile in NH cells is changed during RSV infection. METHODS: BALB/c mice were infected intranasally with RSV...
August 3, 2017: Immunotherapy
https://www.readbyqxmd.com/read/28768724/pd-l2-regulates-b-1-cell-antibody-production-against-phosphorylcholine-through-an-il-5-dependent-mechanism
#16
Jerome T McKay, Marcela A Haro, Christina A Daly, Rama D Yammani, Bing Pang, W Edward Swords, Karen M Haas
B-1 cells produce natural Abs which provide an integral first line of defense against pathogens while also performing important homeostatic housekeeping functions. In this study, we demonstrate that programmed cell death 1 ligand 2 (PD-L2) regulates the production of natural Abs against phosphorylcholine (PC). Naive PD-L2-deficient (PD-L2(-/-)) mice produced significantly more PC-reactive IgM and IgA. This afforded PD-L2(-/-) mice with selectively enhanced protection against PC-expressing nontypeable Haemophilus influenzae, but not PC-negative nontypeable Haemophilus influenzae, relative to wild-type mice...
August 2, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28764781/effects-of-the-combined-extracts-of-herba-epimedii-and-fructus-ligustrilucidi-on-airway-remodeling-in-the-asthmatic-rats-with-the-treatment-of-budesonide
#17
Xiufeng Tang, Honglei Nian, Xiaoxi Li, Yan Yang, Xiujuan Wang, Liping Xu, Haotian Shi, Xinwei Yang, Renhui Liu
BACKGROUND: Asthma is characterized by chronic airway inflammation, leading to structura1 changes in the airway, collectively termed airway remodeling. Airway remodeling is thought to contribute to airway hyper responsiveness and irreversible airflow limitation. The combination of Herba Epimedii (HE) and Fructus Ligustri Lucidi (FLL) decoction and the systemic administration of glucocorticoids (GC) had a synergistic inhibitory action on airway inflammation in the asthmatic model rats...
August 1, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28760971/cytokine-signature-associated-with-disease-severity-in-chronic-fatigue-syndrome-patients
#18
Jose G Montoya, Tyson H Holmes, Jill N Anderson, Holden T Maecker, Yael Rosenberg-Hasson, Ian J Valencia, Lily Chu, Jarred W Younger, Cristina M Tato, Mark M Davis
Although some signs of inflammation have been reported previously in patients with myalgic encephalomyelitis or chronic fatigue syndrome (ME/CFS), the data are limited and contradictory. High-throughput methods now allow us to interrogate the human immune system for multiple markers of inflammation at a scale that was not previously possible. To determine whether a signature of serum cytokines could be associated with ME/CFS and correlated with disease severity and fatigue duration, cytokines of 192 ME/CFS patients and 392 healthy controls were measured using a 51-multiplex array on a Luminex system...
July 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28759187/a-chinese-herbal-medicine-modified-guomin-decoction-influences-the-differentiation-of-cd4-t-cell-subsets-in-ova-induced-asthmatic-mice
#19
(no author information available yet)
OBJECTIVE: Modified Guomin Decoction (MGD) is an effective Chinese herbal medicine for treatment of various allergic diseases, especially allergic asthma. Its water decoction is conventionally used for treatment of allergic bronchitis in China. Up to date, the underlying mechanisms of this herbal combination have not been fully investigated yet. METHODS: In the in vivo study, the mice were treated with Chicken egg ovalbumin (OVA) and aluminum hydroxide gel as the classic allergic asthma animal model...
July 31, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28757362/dynamized-ethyl-alcohol-improves-immune-response-and-behavior-in-murine-infection-with-trypanosoma-cruzi
#20
Patrícia F Sandri, Angela R Portocarrero, Larissa Ciupa, Fabiana N Ferraz, Gislaine J Falkowski-Temporini, Willian N S Rodrigues, Érika C Ferreira, Denise L Aleixo, Silvana Marques de Araújo
AIM: To evaluate the effects of dynamized ethyl alcohol (Ethylicum)6cH and 30cH in mice infected with T. cruzi. METHODS: In a blind, randomized and controlled assay, 63 eight-week-old, Swiss, male mice, infected with IP (1400 trypomastigotes, T. cruzi-Y-strain), were allocated into groups: CNI-non-infected (n=12), CI-infected and non-treated (n=17), Et6cH-infected, treated with Ethylicum 6cH (dilution 1:10(12)) (n=17), Et30cH-infected, treated with Ethylicum 30cH (dilution 1:10(60)) (n=17)...
July 27, 2017: Cytokine
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