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il 17 inhibition

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https://www.readbyqxmd.com/read/28935920/inhibition-of-pde2-reverses-beta-amyloid-induced-memory-impairment-through-regulation-of-pka-pkg-dependent-neuro-inflammatory-and-apoptotic-pathways
#1
Li Wang, Yilixiati Xiaokaiti, Gang Wang, Xiaoxiao Xu, Ling Chen, Xianfeng Huang, Li Liu, Jianchun Pan, Shuqun Hu, Zhuoyou Chen, Ying Xu
Beta amyloid peptides (Aβ) are known risk factors involved in cognitive impairment, neuroinflammatory and apoptotic processes in Alzheimer's disease (AD). Phosphodiesterase 2 (PDE2) inhibitors increase the intracellular cAMP and/or cGMP activities, which may ameliorate cognitive deficits associated with AD. However, it remains unclear whether PDE2 mediated neuroapoptotic and neuroinflammatory events, as well as cognitive performance in AD are related to cAMP/cGMP-dependent pathways. The present study investigated how the selective PDE2 inhibitor BAY60-7550 (BAY) affected Aβ-induced learning and memory impairment in two classic rodent models...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935557/combination-of-pth-1-34-with-anti-il17-prevents-bone-loss-by-inhibiting-il-17-n-cadherin-mediated-disruption-of-pthr1-lrp-6-interaction
#2
Mohd Nizam Mansoori, Priyanka Shukla, Divya Singh
Combinations of anabolic and anti-resorptive agents have potential to improve bone density more than either agent alone. In this study, we determine the combining effect of anti-IL17 antibody and PTH (1-34) in mitigation of ovariectomy induced bone loss. Ovariectomized BALB/c female mice were treated with anti-IL17 and iPTH monotherapies and their combination. Combination of iPTH and anti-IL17 has synergistic effect in the restoration of skeletal and immune parameters compared to mono-therapies. Immunofluorescence analysis shows decreased expression of PTHR1 in iPTH+anti-IL17 treated bone sections...
September 18, 2017: Bone
https://www.readbyqxmd.com/read/28935500/mold-metabolites-drive-rheumatoid-arthritis-in-mice-via-promotion-of-ifn-gamma-and-il-17-producing-t-cells
#3
Susanne Jahreis, Stephanie Kuhn, Anna-Maria Madaj, Mario Bauer, Tobias Polte
Environmental factors have been discussed as triggers for autoimmune diseases like rheumatoid arthritis (RA). However, the role of chemical exposures in activation or exacerbation of RA is not clarified yet. Exposure of DBA/1 mice to the mold metabolites ochratoxin A (OTA) or deoxynivalenol (DON) increased the prevalence and the clinical severity of RA compared to un-exposed mice using an experimental collagen-induced arthritis model. Mycotoxin-exposed mice showed enhanced serum IgG1 and IgG2a levels and an elevated production of IL-1β and IL-6 in inflamed joints and of IFN-γ and IL-17 in splenocytes...
September 18, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28926770/1-25-oh-2d3-induces-regulatory-t-cell-differentiation-by-influencing-the-vdr-plc-%C3%AE-1-tgf-%C3%AE-1-pathway
#4
Qiang Zhou, Shengying Qin, Jinyan Zhang, Lin Zhon, Zhihai Pen, Tonghai Xing
Vitamin D has been recommended as an immune modulator in recent years, in addition to regulating calcium-phosphorous-bone metabolism. Clinical studies on organ transplantation found that vitamin D sufficiency patients were less likely to develop acute cellular rejection within one year after transplantation compared to those with vitamin D deficiency. Thus, a high percentage of regulatory T cells might play a key role in preventing acute cellular rejection (ACR). In this report, we studied the specific effects of 1,25(OH)2D3 on human T cell diff ;erentiation, and determined the potential molecule mechanism behind...
September 16, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28919455/is-there-a-role-for-il-17-in-the-pathogenesis-of-systemic-sclerosis
#5
REVIEW
Carlo Chizzolini, Aleksandra Maria Dufour, Nicolò Costantino Brembilla
In systemic sclerosis (SSc) immuno-inflammatory events are central to disease development. Amongst other mediators of inflammation, interleukin 17 (IL-17) and Th17 cells have been reported to be increased in the peripheral blood and target organs including involved skin in SSc. They participate and amplify inflammatory responses by inducing the production of cytokines such as IL-6, chemokines such as CCL2 and CXCL8 (IL-8), matrix metalloproteinases-1, -2, -9 and the expression of adhesion molecules in stromal cells including fibroblasts and endothelial cells...
September 15, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28919220/peucedanum-japonicum-extract-attenuates-allergic-airway-inflammation-by-inhibiting-th2-cell-activation-and-production-of-pro-inflammatory-mediators
#6
Jin Mi Chun, A-Reum Lee, Hyo Seon Kim, A Yeong Lee, Gyo Jeong Gu, Byeong Cheol Moon, Bo-In Kwon
ETHNOPHARMACOLOGICAL RELEVANCE: The root of Peucedanum japonicum Thunb is traditionally used to treat coughs, colds, headache and inflammatory diseases in Korea and Japan. Its effects on allergic lung inflammation have not been investigated. AIM OF THE STUDY: To investigate the anti-asthmatic effects of Peucedanum japonicum extract (PJE) using a murine model of asthma and a lipopolysaccharide (LPS)-stimulated macrophage cell line. MATERIALS AND METHODS: Mice underwent two rounds of sensitization with ovalbumin 1 week apart followed by four intranasal ovalbumin challenges on days 13-16...
September 15, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28914804/the-role-of-erk-signaling-in-experimental-autoimmune-encephalomyelitis
#7
Katharina Birkner, Beatrice Wasser, Julia Loos, Alexander Plotnikov, Rony Seger, Frauke Zipp, Esther Witsch, Stefan Bittner
Extracellular signal-regulated kinase (ERK) signaling plays a crucial role in regulating immune cell function and has been implicated in autoimmune disorders. To date, all commercially available inhibitors of ERK target upstream components, such as mitogen-activated protein (MAP) kinase/ERK kinase (MEKs), but not ERK itself. Here, we directly inhibit nuclear ERK translocation by a novel pharmacological approach (Glu-Pro-Glu (EPE) peptide), leading to an increase in cytosolic ERK phosphorylation during T helper (Th)17 cell differentiation...
September 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28912844/triptolide-inhibits-cd4-memory-t-cell-mediated-acute-rejection-and-prolongs-cardiac-allograft-survival-in-mice
#8
Shuiwei Qiu, Dingliang Lv
There have been numerous investigations into the immunosuppressive effects of triptolide; however, its inhibitory effects on memory T cells remain to be elucidated. Using a cluster of differentiation (CD)4(+) memory T-cell transfer model, the aim of the present study was to determine the inhibitory effects of triptolide on CD4(+) memory T cell-mediated acute rejection and to determine the potential underlying mechanisms. At 4 weeks after skin transplantation, mouse cervical heart transplantation was performed following the transfer of CD4(+) memory T cells...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28912678/il-17a-enhances-microglial-response-to-ogd-by-regulating-p53-and-pi3k-akt-pathways-with-involvement-of-ros-hmgb1
#9
Bin Zhang, Ning Yang, Zhi-Ming Mo, Shao-Peng Lin, Feng Zhang
Cerebral ischemia-reperfusion injury (IRI) has a complex pathogenesis, and interleukin-17 (IL-17) is a newly identified class of the cytokine family that plays an important role in ischemic inflammation. An oxygen-glucose deprivation (OGD) model showed that IL-17A expression was significantly up-regulated in microglial cells. After IL-17A siRNA transfection, the inhibition of proliferation, and the increased apoptosis in microglial cells, induced by OGD/reperfusion, was improved, and the elevation of Caspase-3, Caspase-8, Caspase-9, and poly ADP ribose polymerase (PARP) activities was inhibited...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28911642/lactobacillus-pentosus-gmnl-77-inhibits-skin-lesions-in%C3%A2-imiquimod-induced-psoriasis-like-mice
#10
Yi-Hsing Chen, Chieh-Shan Wu, Ya-Husan Chao, Chi-Chen Lin, Hui-Yun Tsai, Yi-Rong Li, Yi-Zhen Chen, Wan-Hua Tsai, Yu-Kuo Chen
Psoriasis, which is regarded as a T-cell-mediated chronic inflammatory skin disease, is characterized by hyperproliferation and poor differentiation of epidermal keratinocytes. In this study, we aimed to determine the in vivo effect of a potentially probiotic strain, Lactobacillus pentosus GMNL-77, in imiquimod-induced epidermal hyperplasia and psoriasis-like skin inflammation in BALB/c mice. Oral administration of L. pentosus GMNL-77 significantly decreased erythematous scaling lesions. Real-time polymerase chain reaction showed that treatment with L...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28910960/-effects-of-human-mesenchymal-stem-cells-on-airway-inflammation-in-allergic-asthma-mice-and-the-underlying-mechanism
#11
N N Ren, H J Chen, Q L Chen, J Eileen, Y G An, Yiguang Lin
Objectives: To investigate the effects of human umbilical cord mesenchymal stem cells (hUC-MSCs) on airway inflammation in an ovalbumin (OVA) induced asthma mouse model and the underlying mechanism. Methods: Twenty-four BALB/c mice were randomly divided into four equal groups: normal control group, OVA-induced asthmatic model group, hUC-MSCs treated group (50 μl of hUC-MSCs was transplanted into the trachea of asthmatic mice ) and hUC-MSCs control group (50 μl of hUC-MSCs was transplanted into the trachea of control mice)...
September 12, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28910312/i%C3%AE%C2%BAk-16-decreases-mirna-155-expression-and-attenuates-the-human-monocyte-inflammatory-response
#12
Norman James Galbraith, James Burton, Mathew Brady Ekman, Joseph Kenney, Samuel Patterson Walker, Stephen Manek, Campbell Bishop, Jane Victoria Carter, Sarah Appel Gardner, Hiram C Polk
Excessive inflammatory responses in the surgical patient may result in cellular hypo-responsiveness, which is associated with an increased risk of secondary infection and death. microRNAs (miRNAs), such as miR-155, are powerful regulators of inflammatory signalling pathways including nuclear factor κB (NFκB). Our objective was to determine the effect of IκK-16, a selective blocker of inhibitor of kappa-B kinase (IκK), on miRNA expression and the monocyte inflammatory response. In a model of endotoxin tolerance using primary human monocytes, impaired monocytes had decreased p65 expression with suppressed TNF-α and IL-10 production (P < 0...
2017: PloS One
https://www.readbyqxmd.com/read/28906255/echinococcus-multilocularis-vesicular-fluid-inhibits-activation-and-proliferation-of-natural-killer-cells
#13
Anne-Pauline Bellanger, Valentine Mougey, Jean-Rene Pallandre, Houssein Gbaguidi-Haore, Yann Godet, Laurence Millon
Alveolar echinococcosis is a severe chronic helminthic disease that mimics slow-growing liver cancer. The immune evasion strategy of Echinococcus multilocularis Leuckart, 1863 remains poorly understood. The aim of this study was to investigate in vitro the impact of E. multilocularis vesicular fluid (Em-VF) on peripheral blood mononuclear cells (PBMC) and on natural killer (NK) cells. PBMC and NK cells were exposed to Em-VF (1 µg/ml) during six days. The effect of Em-VF was assessed on CD69, viability and proliferation, and on and transforming growth factor β (TGF-β), interferon γ (IFN-γ), interleukin 17 (IL-17) and interleukin 10, using flow cytometry and ELISA, respectively...
August 25, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28903333/effect-of-pkc-inhibitor-on-experimental-autoimmune-myocarditis-in-lewis-rats
#14
Chunlian Zhong, Yang Wu, He Chang, Chunxiao Liu, Li Zhou, Jun Zou, Zhi Qi
Myocarditis is a major cause of sudden, unexpected death in young people. However, it is still one of the most challenging diseases to treat in cardiology. In the present study, we showed that both expression level and activity of PKC-α were up-regulated in the rat heart of experimental autoimmune myocarditis (EAM). Intraperitoneal administration of PKC inhibitor (Ro-32-0432) at the end of the most severe inflammation period of EAM still significantly reduced the EAM induced expression of failure biomarkers...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28901469/glycogen-synthase-kinase%C3%A2-3%C3%AE-inhibitor-reduces-lps%C3%A2-induced-acute-lung-injury-in-mice
#15
Qi Ding, Gaoqin Liu, Yuanyuan Zeng, Jianjie Zhu, Zeyi Liu, Junhong Jiang, Jianan Huang
The aim of the present study was to examine the role of Wnt signaling in lipopolysaccharide (LPS)‑induced acute respiratory distress syndrome (ARDS). ARDS was induced by LPS and compared in mice treated with either glycogen synthase kinase‑3β inhibitor (GSKI) or PBS. The protein expression levels of interleukin (IL)‑6, IL‑8, tumor necrosis factor (TNF)‑α, IL‑17, IL‑18 and IL‑1β in the bronchoalveolar lavage fluid (BALF) were examined using murine cytokine‑specific enzyme‑linked immunosorbent assays...
September 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28899951/lowering-interleukin-12-activity-improves-myocardial-and-vascular-function-compared-with-tumor-necrosis-factor-a-antagonism-or-cyclosporine-in-psoriasis
#16
Ignatios Ikonomidis, Evangelia Papadavid, George Makavos, Ioanna Andreadou, Maria Varoudi, Kostas Gravanis, Kostas Theodoropoulos, George Pavlidis, Helen Triantafyllidi, Paraskevi Moutsatsou, Christina Panagiotou, John Parissis, Efstathios Iliodromitis, John Lekakis, Dimitrios Rigopoulos
BACKGROUND: Interleukin (IL)-12 activity is involved in the pathogenesis of psoriasis and acute coronary syndromes. We investigated the effects of IL-12 inhibition on vascular and left ventricular (LV) function in psoriasis. METHODS AND RESULTS: One hundred fifty psoriasis patients were randomized to receive an anti-IL-12/23 (ustekinumab, n=50), anti-tumor necrosis factor-a (TNF-α; etanercept, n=50), or cyclosporine treatment (n=50). At baseline and 4 months post-treatment, we measured (1) LV global longitudinal strain, twisting, and percent difference between peak twisting and untwisting at mitral valve opening (%untwMVO) using speckle-tracking echocardiography, (2) coronary flow reserve, (3) pulse wave velocity and augmentation index, (4) circulating NT-proBNP (N-terminal pro-B-type natriuretic peptide), TNF-α, IL-6, IL-12, IL-17, malondialdehyde, and fetuin-a...
September 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28898718/interleukin-17-regulates-shp-2-and-il-17ra-stat-3-dependent-cyr61-il-23-and-gm-csf-expression-and-rankl-mediated-osteoclastogenesis-by-fibroblast-like-synoviocytes-in-rheumatoid-arthritis
#17
Ramamoorthi Ganesan, Mahaboobkhan Rasool
Interleukin (IL)-17 predominately produced by the Th17 cells, plays a crucial role in the fibroblast-like synoviocytes (FLS) mediated disease process of rheumatoid arthritis (RA). IL-17 exerts its pathogenic effects in RA-FLS by IL-17/IL-17RA/STAT-3 signaling. Recent studies have shown that RA-FLS produces SHP-2, Cyr61, IL-23, GM-CSF and RANKL which results in worsening of the disease. However, whether IL-17/IL-17RA/STAT-3 signaling regulates SHP-2, Cyr61, IL-23, GM-CSF and RANKL expressions in RA-FLS remains unknown...
September 9, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28891414/therapeutic-effects-of-walnut-oil-on-the-animal-model-of-multiple-sclerosis
#18
Ali Ganji, Iman Farahani, Mohammad Reza Palizvan, Ali Ghazavi, Mostafa Ejtehadifar, Mohsen Ebrahimimonfared, Mana Shojapour, Ghasem Mosayebi
OBJECTIVES: Therapeutic approaches for multiple sclerosis (MS), an autoimmune disease of the central nervous system (CNS), are accompanied by various undesirable side effects. Owing to the anti-inflammatory and antioxidant effects of walnut, we investigated its effects on the experimental autoimmune encephalomyelitis (EAE) mouse model of MS. METHODS: After EAE induction in mice, the treated group was gavaged daily with walnut oil. The weights and clinical symptoms were monitored daily for 21 days following the onset of symptoms...
September 11, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28890543/the-altered-pd-1-pd-l1-pathway-delivers-the-one-two-punch-effects-to-promote-the-treg-th17-imbalance-in-pre-eclampsia
#19
Yonghong Zhang, Zhaozhao Liu, Mei Tian, Xiaohui Hu, Liling Wang, Jinlu Ji, Aihua Liao
The programmed cell death-1 (PD-1)/PD-ligand 1 (PD-L1) pathway is critical for normal pregnancy by promoting regulatory T (Treg) cell development and inhibiting the Th17 response. However, the relationship between the PD-1/PD-L1 pathway and the Treg/Th17 imbalance in pre-eclampsia (PE) is an enigma. In this study, decreased PD-1 and PD-L1 expression and a Treg/Th17 imbalance were observed at the maternal-fetal interface in PE. The regulatory effects of the PD-1/PD-L1 pathway on the Treg and Th17 cell quantities were determined in vitro by targeting T-cell proliferation, differentiation and transdifferentiation...
September 11, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28881756/mm-bmscs-induce-na%C3%A3-ve-cd4-t-lymphocytes-dysfunction-through-fibroblast-activation-protein-%C3%AE
#20
Xiaofei Wu, Yadan Wang, Jian Xu, Ting Luo, Jun Deng, Yu Hu
BACKGROUND: The tumor microenvironment plays a major role in multiple myelomas (MM). MM-BMSCs (bone marrow mesenchymal stromal cells) can support tumor growth and immune surveillance escape. On the other hand, fibroblast activation protein α, expressed by cancer stroma cells including BMSCs, has been shown to potentiate epithelial cancers growth and immune suppression. RESULTS: MM-BMSC inhibited proliferation of T cells (P = 0.0138), promoted senescence of T cells (P < 0...
August 8, 2017: Oncotarget
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