keyword
MENU ▼
Read by QxMD icon Read
search

Tlr4

keyword
https://www.readbyqxmd.com/read/29230705/crosstalk-between-tlr4-and-notch1-signaling-in-the-iga-nephropathy-during-inflammatory-response
#1
Xuxiang Sheng, Xiaoyan Zuo, Xihui Liu, Yang Zhou, Xia Sun
PURPOSE: IgA nephropathy (IgAN) is an immune complex-mediated disease involved in the kidney disease. Recent studies have revealed that Notch signaling-related genes are aberrantly expressed in various cell types and maybe associate with inflammation-induced carcinogenesis. The aim of our study was to investigate the function of Notch1 in the inflammatory response of IgAN. METHODS: The expression of Notch1, Jagged1 and NICD1 in 52 IgAN renal tissues and 20 control renal tissues was first determined using quantitative real-time PCR and Western blot...
December 11, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/29230038/the-lps-inducible-lncrna-mirt2-is-a-negative-regulator-of-inflammation
#2
Meng Du, Lin Yuan, Xin Tan, Dandan Huang, Xiaojing Wang, Zhe Zheng, Xiaoxiang Mao, Xiangrao Li, Liu Yang, Kun Huang, Fengxiao Zhang, Yan Wang, Xi Luo, Dan Huang, Kai Huang
Toll-like receptors (TLRs) are a family of pattern recognition receptors (PRR) with a crucial function in innate immune responses. Activation of TLR4 signaling at the plasma membrane by lipopolysaccharide (LPS) stimulates proinflammatory signaling pathways dependent on the E3 ubiquitin ligase TRAF6. Here we show the LPS-induced long non-coding RNA (lncRNA) Mirt2 functions as a checkpoint to prevent aberrant activation of inflammation, and is a potential regulator of macrophage polarization. Mirt2 associates with, and attenuates Lys63 (K63)-linked ubiquitination of, TRAF6, thus inhibiting activation of NF-κB and MAPK pathways and limiting production of proinflammatory cytokines...
December 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/29229781/differential-regulation-of-tlr4-induced-il-10-production-in-b-cells-and-macrophages-reveals-a-novel-role-for-rsk1-and-2-in-b-cells
#3
Ruhcha V Sutavani, Iain R Phair, Rebecca Barker, Alison McFarlane, Natalia Shpiro, Stuart Lang, Andrew Woodland, J Simon C Arthur
Increasing evidence has linked dysregulated IL-10 production by IL-10+ve B cells to autoimmunity, highlighting the importance of improving the understanding of the regulation of IL-10 production in these cells. In both B cells and myeloid cells, IL-10 can be produced in response to Toll-like receptor (TLR) agonists. In macrophages, previous studies have established that mitogen- and stress-activated protein kinases (MSKs) regulate IL-10 production via the phosphorylation of cAMP response element-binding (CREB) protein on the IL-10 promoter...
December 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29229733/expression-of-tlr2-by-dendritic-cells-is-essential-for-dnaj-%C3%AE-a146ply-mediated-th1-immune-response-against-streptococcus-pneumoniae
#4
Xiaofang Wang, Taixian Yuan, Jun Yuan, Yufeng Su, Xiaoyu Sun, Jingwen Wu, Hong Zhang, Xun Min, Xuemei Zhang, Yibing Yin
The fusion protein, DnaJ-ΔA146Ply, could induce cross-protective immunity against pneumococcal infection via mucosal and subcutaneous immunization in mice in the absence of additional adjuvants. DnaJ and Ply are both TLR4 but not TLR2 ligands. However, we found that TLR2-/- mice immunized subcutaneously with DnaJ-ΔA146Ply showed significantly lower survival rates and higher bacterial loads in nasal washes than those of WT mice after being challenged with pneumococcal strains D39 or 19F. The IFN-γ level in splenocytes decreased in TLR2-/- mice, indicating that Th1 immunity elicited by DnaJ-ΔA146Ply was impaired in TLR2-/- mice...
December 11, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/29229731/activation-of-porcine-alveolar-macrophages-by-actinobacillus-pleuropneumoniae-lipopolysaccharide-via-the-tlr4-nf-%C3%AE%C2%BAb-mediated-pathway
#5
Bi Li, Jing Fang, Zhicai Zuo, Sirui Yin, Tingting He, Mingxian Yang, Junliang Deng, Liuhong Shen, Xiaoping Ma, Shumin Yu, Ya Wang, Zhihua Ren
Actinobacillus pleuropneumoniae (A. pleuropneumoniae) is a causative agent of the porcine contagious pleuropneumonia. Overproduction of pro-inflammatory cytokines like IL-1β, IL-6, TNF-α and Resistin in lung is an important feature of A. pleuropneumoniae infection. These pro-inflammatory cytokines enhance inflammatory and immunological responses. However, the mechanism that leads to cytokines production remains unclear. As a major virulent factor of A. pleuropneumoniae, lipopolysaccharide (LPS) may act as a potent stimulator of TLR4, triggering a number of intracellular signaling pathways that lead to synthesis of pro-inflammatory cytokines...
December 11, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/29229612/targeting-tmbim1-alleviates-pathological-cardiac-hypertrophy
#6
Ke-Qiong Deng, Guang-Nian Zhao, Zhihua Wang, Jing Fang, Zhou Jiang, Jun Gong, Feng-Juan Yan, Xue-Yong Zhu, Peng Zhang, Zhi-Gang She, Hongliang Li
Background -Cardiac hypertrophy and its resultant heart failure are among the most common causes of mortality worldwide. Abnormal protein degradation, especially the impaired lysosomal degradation of large organelles and membrane proteins, is involved in the progression of cardiac hypertrophy. However, the underlying mechanisms have not been fully elucidated. Methods -We investigated cardiac TMBIM1 mRNA and protein expression levels in samples from patients with heart failure and mice with aortic banding (AB)-induced cardiac hypertrophy...
December 11, 2017: Circulation
https://www.readbyqxmd.com/read/29228698/osteopontin-is-involved-in-tlr4-pathway-contributing-to-ovarian-cancer-cell-proliferation-and-metastasis
#7
Cong Xu, Hua Li, Miao Yin, Tao Yang, Liguo An, Guiwen Yang
Tumor cell proliferation and metastasis are critical for tumor progression and lead to death of cancer patients. TLR4 is a member of the toll-like receptor (TLR) family, which promotes tumor growth, metastasis and immune escape. Osteopontin (OPN), a phosphorylated glycoprotein extensively expressed in multiple cell-types, plays important roles in tumorigenesis, metastasis and infiltration, and participates in signal transduction of innate immunity. However, it is unclear whether TLR4 has any relationship with OPN...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228588/interleukin-17a-promoted-msc2-polarization-related-with-new-bone-formation-of-ankylosing-spondylitis
#8
Tao He, Yan Huang, Chen Zhang, Denghui Liu, Chao Cheng, Weidong Xu, Xiaoling Zhang
It's still unknown how over-hyperplasia of tissue such like new bone formation (NBF) developed in ankylosing spondylitis (AS). We found low level of IL-17A promoted TLR4+MSC1 polarization with suppressed osteogenic differentiation through JAK2/STAT3 pathway, while high level of IL-17A promoted TLR3+MSC2 polarization with enhanced osteogenic differentiation through WNT10b/RUNX2 pathway. Furthermore, both proteoglycan-induced spondylitis (PGISp) mouse model and AS patients without NBF showed MSC1 polarization, up-regulated JAK2/STAT3 pathway and high level of IL-17A (peripherally, but not locally), but those with NBF showed MSC2 polarization, up-regulated WNT10b/RUNX2 pathway and high expression of IL-17A at local site...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228570/keratin-8-reduces-colonic-permeability-and-maintains-gut-microbiota-homeostasis-protecting-against-colitis-and-colitis-associated-tumorigenesis
#9
Chao Liu, En-Dong Liu, Yun-Xiao Meng, Xiao-Ming Dong, Ya-Lan Bi, Huan-Wen Wu, Yan-Chao Jin, Ke Zhao, Jian-Jie Li, Miao Yu, Yi-Qun Zhan, Hui Chen, Chang-Hui Ge, Xiao-Ming Yang, Chang-Yan Li
Keratin 8 (CK8) is the major component of the intermediate filaments of simple or single-layered epithelia. Gene targeting mice model suggest that CK8 is involved in colonic active ion transport, colorectal hyperplasia and inflammation. In the present study, we found that CK8 is downregulated in the colon during DSS-induced colitis and AOM/DSS-induced colitis-associated colorectal cancer (CAC) development. In human patients with colon cancer, CK8 is downregulated. Using CK8 heterozygous knockout mice (CK8+/-), we found that CK8+/- mice are highly susceptible to DSS-induced colitis and more prone to AOM/DSS-induced CAC than wild type (WT) mice...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29227975/high-phosphate-induced-calcification-of-vascular-smooth-muscle-cells-is-associated-with-the-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway
#10
Daohai Zhang, Xianjin Bi, Yong Liu, Yinghui Huang, Jiachuan Xiong, Xinli Xu, Tangli Xiao, Yanlin Yu, Wei Jiang, Yunjian Huang, Jingbo Zhang, Bo Zhang, Jinghong Zhao
BACKGROUND/AIMS: Hyperphosphatemia is one of the most notable features of chronic kidney disease (CKD). Numerous epidemiological and clinical studies have found that high serum phosphate concentrations are associated with calcification in the coronary arteries. However, the mechanisms underlying the vascular calcification induced by high phosphate have not been understood fully. METHODS: Vascular smooth muscle cells (VSMCs) were cultured in high-phosphate media to induce vascular calcification, which was detected by Alizarin red S staining...
December 8, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29227824/reduced-inflammatory-factor-expression-facilitates-recovery-after-sciatic-nerve-injury-in-tlr4-mutant-mice
#11
Guoqing Tang, Jia Yao, Ruowu Shen, Aiyu Ji, Kai Ma, Beibei Cong, Fang Wang, Lingyu Zhu, Xuan Wang, Yingqiao Ding, Bei Zhang
Toll-like receptors (TLRs) are extremely significant pattern recognition receptors. When nerve injury occurs, a variety of inflammatory factors are generated, leading to an exceedingly complex micro-environment. TLRs recognize damage-associated molecular patterns. To investigate the correlation between TLR4 and recovery after sciatic nerve injury, the model of sciatic nerve injury was conducted using TLR4-mutated mice (C3H/HeJ) and wild mice (C3H/HeN). Our goal was to identify short-stage and long-stage changes after sciatic nerve injury, mainly by checking the expression changes of inflammation factors in the short-stage and the differences in the recovery of the injured sciatic nerve in the long-stage...
December 8, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29226955/stem-cells-rescue-cardiomyopathy-induced-by-p-gingivalis-lps-via-mir-181b
#12
Tung-Sheng Chen, Sarnai Battsengel, Chia-Hua Kuo, Lung-Fa Pan, Yueh-Min Lin, Chun-Hsu Yao, Yueh-Sheng Chen, Feng-Huei Lin, Wei-Wen Kuo, Chih-Yang Huang
Systemic inflammation induced by bacterial infection is one of several causative agents for cardiovascular disorders in patients with periodontal disease. Experimental results indicate that miRNAs play important roles in systemic inflammation induced by endotoxins. Further evidence states that stem cell based therapy shows potential in the treatment of inflammatory responses induced by sepsis. This study investigates if stem cells show protective effects on cardiomyocyte damage induced by porphyromonas gingivalis-LPS (Pg-LPS) through regulating miRNAs...
December 11, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29226948/mir-182-5p-inhibited-oxidative-stress-and-apoptosis-triggered-by-oxidized-low-density-lipoprotein-via-targeting-toll-like-receptor-4
#13
Song-Bai Qin, Da-Yan Peng, Yan Shi, Zun-Ping Ke
MicroRNAs (miRNAs) exhibit various roles in multiple biological processes and abnormal expression of miR-182-5p has been involved in many diseases. However, the role miR-182-5p in Atherosclerosis (AS) remains poorly understood. In our current investigation, an AS model was established by using oxidized low-density lipoprotein (ox-LDL) in RAW264.7 cells. miR-182-5p was markedly decreased in AS model dose-dependently and time-dependently. Additionally, CD36, oil-red staining levels, TC and TG were inhibited by miR-182-5p mimics, meanwhile ROS levels, MDA and cell apoptosis were also restrained with an enhancement of SOD activity...
December 11, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29226647/human-peripheral-blood-cells-mrna-levels-are-highly-sensitive-to-duration-of-ex-vivo-post-sampling-conditions-prior-to-rna-isolation
#14
Eva Bohackova, Pavlina Dankova
BACKGROUND: This study aimed to evaluate an effect of the time period between drawing the peripheral blood and specimen processing on the stability of mRNA levels of 7 selected genes. METHODS: Blood samples derived from 15 healthy volunteers were always processed at five consecutive time points 0.5, 1.5, 2, 3, and 9 hours; mRNA was quantified by real-time PCR. RESULTS: Anti-inflammatory genes CCL2 and IL10 showed a significant rise of expression between the 3rd and 9th hour after blood collection (p ≤ 0...
November 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29226424/activation-of-ep2-receptor-suppresses-poly-i-c-and-lps-mediated-inflammation-in-primary-microglia-and-organotypic-hippocampal-slice-cultures-contributing-role-for-mapks
#15
Nizar M Yousif, Antonio Carlos Pinheiro de Oliveira, Simone Brioschi, Michael Huell, Knut Biber, Bernd L Fiebich
Brain inflammation is a critical factor involved in neurodegeneration. Recently, the prostaglandin E2 (PGE2 ) downstream members were suggested to modulate neuroinflammatory responses accompanying neurodegenerative diseases. In this study, we investigated the protective effects of prostaglandin E2 receptor 2 (EP2 ) during TLR3 and TLR4-driven inflammatory response using in vitro primary microglia and ex vivo organotypic hippocampal slice cultures (OHSCs). Depletion of microglia from OHSCs differentially affected TLR3 and TLR4 receptor expression...
December 11, 2017: Glia
https://www.readbyqxmd.com/read/29226075/prediction-of-target-genes-for-mir-140-5p-in-pulmonary-arterial-hypertension-using-bioinformatics-methods
#16
Fangwei Li, Wenhua Shi, Yixin Wan, Qingting Wang, Wei Feng, Xin Yan, Jian Wang, Limin Chai, Qianqian Zhang, Manxiang Li
The expression of microRNA (miR)-140-5p is known to be reduced in both pulmonary arterial hypertension (PAH) patients and monocrotaline-induced PAH models in rat. Identification of target genes for miR-140-5p with bioinformatics analysis may reveal new pathways and connections in PAH. This study aimed to explore downstream target genes and relevant signaling pathways regulated by miR-140-5p to provide theoretical evidences for further researches on role of miR-140-5p in PAH. Multiple downstream target genes and upstream transcription factors (TFs) of miR-140-5p were predicted in the analysis...
December 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/29224353/curcumin-attenuates-atherosclerosis-in-apolipoprotein-e-knockout-mice-by-inhibiting-toll-like-receptor-4-expression
#17
Shanshan Zhang, Jun Zou, Peiyang Li, Xiumei Zheng, Dan Feng
Toll-like receptor 4 (TLR4) has been reported to play a critical role in the pathogenesis of atherosclerosis, the current study aimed to investigate whether curcumin suppresses atherosclerosis development in ApoE-knockout (ApoE-/-) mice by inhibiting TLR4 expression. ApoE-/- mice were fed a high-fat diet supplemented with or without curcumin (0.1% w/w) for 16 weeks. Curcumin supplementation significantly reduced TLR4 expression and macrophage infiltration in atherosclerotic plaques. Curcumin also reduced aortic interleukin-1β (IL-1β), tumour necrosis factor-α (TNF-α), vascular cell adhesion molecule -1(VCAM-1) and intercellular adhesion molecule- 1(ICAM-1) expression, nuclear factor-κB (NF-κB) activity, and plasma IL-1β, TNF-α, soluble VCAM-1 and ICAM-1 levels...
December 10, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29223854/baicalein-improves-liver-inflammation-in-diabetic-db-db-mice-by-regulating-hmgb1-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway
#18
Huafeng Yin, Lihao Huang, Ting Ouyang, Lvyi Chen
The current study was designed to investigate the hepatoprotective effects and possible mechanisms of Baicalein (BA) on the diabetic liver injury in vivo and in vitro. The results exhibited that BA significantly restored the blood glucose in oral glucose tolerance test (OGTT) and inhibited the levels of insulin, alanine aminotransferase (ALT), aspartate aminotransaminase (AST), total cholesterol (TC) and triglyceride (TG) in C57BL/KsJ-db/db mice. Moreover, BA strikingly attenuated the extent of steatosis in the liver tissues of diabetic mice...
December 7, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29223553/lipopolysaccharide-induces-autophagy-by-targeting-the-ampk-mtor-pathway-in-human-nasal-epithelial-cells
#19
Xue-Hai Wang, Zhong-Hua Zhang, Xiao-Lan Cai, Ping Ye, Xin Feng, Ting-Ting Liu, Xue-Zhong Li
Chronic rhinosinusitis (CRS) is a well-known disease encountered in the department of otorhinolaryngology, yet little is known about its pathogenesis. Autophagy, a lysosome-dependent degradation process, has been reported to be involved in the process of many chronic inflammatory diseases. Here we tried to evaluate the function of autophagy in CRS as well as explore the related mechanisms. We first stained light chain 3B (LC3B) with immunohistochemistry in uncinate tissues (UT) from patients with and without CRS and found that its expression was up-regulated in CRS patients...
December 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29222622/toll-like-receptor-4-knockdown-attenuates-brain-damage-and-neuroinflammation-after-traumatic-brain-injury-via-inhibiting-neuronal-autophagy-and-astrocyte-activation
#20
Hongsheng Jiang, Yanzhou Wang, Xin Liang, Xiaofeng Xing, Xiuzhen Xu, Caifeng Zhou
Toll-like receptor 4 (TLR4) has been linked to various pathophysiological conditions, such as traumatic brain injury (TBI). It is reported that posttraumatic neuroinflammation is an essential event in the progression of brain injury after TBI. Recent evidences indicate that TLR4 mediates glial phagocytic activity and inflammatory cytokines production. Thus, TLR4 may be an important therapeutic target for neuroinflammatory injury post-TBI. This study was designed to explore potential effects and underlying mechanisms of TLR4 in rats suffered from TBI...
December 8, 2017: Cellular and Molecular Neurobiology
keyword
keyword
9604
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"