keyword
MENU ▼
Read by QxMD icon Read
search

toll like receptors

keyword
https://www.readbyqxmd.com/read/29031241/citrus-pectin-attenuates-endotoxin-shock-via-suppression-of-toll-like-receptor-signaling-in-peyer-s-patch-myeloid-cells
#1
Keita Ishisono, Tomio Yabe, Kohji Kitaguchi
Pectin, a water-soluble dietary fiber, has been found to improve survival in endotoxin shock. However, the underlying mechanism by which pectin exerts its protective effect against endotoxin shock remains unknown. Apart from its prebiotic effects, it has been suggested that pectin directly affects immune cells to regulate inflammatory responses. In this study, we investigated the direct effect of pectin in murine model of endotoxin shock. Citrus pectin solution was administered to male C57BL/6 mice for 10 days...
August 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29028772/heme-oxygenase-1-protects-the-liver-from-septic-injury-by-modulating-tlr4-mediated-mitochondrial-quality-control-in-mice
#2
Jin-Sook Park, Hyo-Sun Choi, So-Yeon Yim, Sun-Mee Lee
Mitochondrial dysfunction is involved in the pathogenesis of sepsis-induced multiple organ dysfunction syndrome (MODS). Mitochondrial quality control (QC) is characterized by self-recovering mitochondrial damage through mitochondrial biogenesis, mitophagy, and fission/fusion. Heme oxygenase (HO)-1 acts as a signaling molecule to modulate inflammation. The present study elucidated the cytoprotective mechanisms of HO-1 in sepsis, particularly focusing on toll-like receptor (TLR)4-mediated mitochondrial QC. Mice were subjected to sepsis by cecal ligation and puncture (CLP)...
October 12, 2017: Shock
https://www.readbyqxmd.com/read/29028369/toll-like-receptors-significance-ligands-signaling-pathways-and-functions-in-mammals
#3
Mallenahally Kusha Vidya, V Girish Kumar, Veerasamy Sejian, Madiajagan Bagath, Govindan Krishnan, Raghavendra Bhatta
This review attempts to cover the implication of the toll-like receptors (TLRs) in controlling immune functions with emphasis on their significance, function, regulation and expression patterns. The tripartite TLRs are type I integral transmembrane receptors that are involved in recognition and conveying of pathogens to the immune system. These paralogs are located on cell surfaces or within endosomes. The TLRs are found to be functionally involved in the recognition of self and non-self-antigens, maturation of DCs and initiation of antigen-specific adaptive immune responses as they bridge the innate and adaptive immunity...
October 13, 2017: International Reviews of Immunology
https://www.readbyqxmd.com/read/29028278/functional-variants-in-intercellular-adhesion-molecule-1-and-toll-like-receptor-4-genes-are-more-frequent-in-children-with-febrile-urinary-tract-infection-with-renal-parenchymal-involvement
#4
Almontaser Hussein, Khaled Saad, Eman Askar, Asmaa M Zahran, Hekma Farghaly, Kotb Metwalley, Ahmad A Elderwy
AIM: We studied the functional polymorphisms of intercellular adhesion molecule-1 and toll-like receptor-4 genes and risk of acute pyelonephritis in children attending Assiut University Children's Hospitals, Egypt from 2011 to 2015. METHODS: Urinary tract infections (UTIs) were diagnosed in 380 children: 98 had acute pyelonephritis and 282 had lower UTIs. Four single-nucleotide polymorphisms in intercellular adhesion molecule-1 and toll-like receptor-4 genes were genotyped in all subjects: ICAM-1 rs1799969 Gly241Arg, ICAM-1 rs5498 Glu469Lys, TLR-4 rs4896791 Thr399Ile and TLR-4 rs4896790 Asp299Gly...
October 13, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/29027214/development-of-an-alternative-zebrafish-model-for-drug-induced-intestinal-toxicity
#5
Bokyeong Ryu, C-Yoon Kim, Hanseul Oh, Ukjin Kim, Jin Kim, Cho-Rok Jung, Byoung-Hee Lee, Seungki Lee, Seo-Na Chang, Ji Min Lee, Hyung-Min Chung, Jae-Hak Park
An evaluation of intestinal toxicity is important because the mucosal lining of the gastrointestinal tract is the first barrier for oral xenobiotics. Until now, a rat model has been recommended as the standard intestinal toxicity model and the Caco-2 cell line, originated from a human colon adenocarcinoma, has been used as an alternative to this model, but there are limitations regarding cost-effectiveness and the need for mimicry of the human system. In this study, we investigated whether zebrafish could be a valid alternative to rats and Caco-2 cells as an intestinal toxicity model...
October 13, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29027124/tak1-inhibition-ameliorates-survival-from-graft-versus-host-disease-in-an-allogeneic-murine-marrow-transplantation-model
#6
Ayako Kobayashi, Shinichi Kobayashi, Kosuke Miyai, Yukiko Osawa, Toshikatsu Horiuchi, Shoichiro Kato, Takaaki Maekawa, Takeshi Yamamura, Junichi Watanabe, Ken Sato, Hitoshi Tsuda, Fumihiko Kimura
Acute graft-versus-host disease (GVHD) is a major cause of morbidity and mortality in allogeneic hematopoietic cell transplantation (allo-HCT). Majority of the current immunosuppressive strategies targeting donor T cells to prevent or treat acute GVHD are only partially effective, and often require escalated immunosuppressive therapy. Recent studies have revealed that activation of antigen-presenting cells in the proinflammatory milieu is important for the priming and promotion of GVHD. This activation is mediated by innate immune signaling pathways, which therefore potentially represent new targets in addressing GVHD...
October 12, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/29025711/toll-like-receptor-2-and-4-have-opposing-roles-in-the-pathogenesis-of-cigarette-smoke-induced-chronic-obstructive-pulmonary-disease
#7
Tatt Jhong Haw, Malcolm R Starkey, Stelios Pavlidis, Michael Fricker, Anya L Arthurs, Prema Mono Nair, Gang Liu, Irwan Hanish, Richard Y Kim, Paul S Foster, Jay C Horvat, Ian M Adcock, Philip M Hansbro
Chronic Obstructive Pulmonary Disease (COPD) is the third leading cause of morbidity and death and imposes major socioeconomic burdens globally. It is a progressive and disabling condition that severely impairs breathing and lung function. There is a lack of effective treatments for COPD, which is a direct consequence of the poor understanding of the underlying mechanisms involved in driving the pathogenesis of the disease. Toll-like receptor (TLR)2 and TLR4 are implicated in chronic respiratory diseases, including COPD, asthma and pulmonary fibrosis...
October 12, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29024595/organelle-specific-triggered-release-of-immunostimulatory-oligonucleotides-from-intrinsically-coordinated-dna-metal-organic-frameworks-with-soluble-exoskeleton
#8
Zejun Wang, Yao Fu, Zhengzhong Kang, Xiaoguo Liu, Nan Chen, Qi Wang, Yaoquan Tu, Lihua Wang, Shiping Song, Daishun Ling, Haiyun Song, Xueqian Kong, Chunhai Fan
DNA has proven of high utility to modulate the surface functionality of metal-organic frameworks (MOFs) for various biomedical applications. Nevertheless, current methods for preparing DNA-MOF nanoparticles rely on either inefficient covalent conjugation or specific modification of oligonucleotides. In this work, we report that unmodified oligonucleotides can be loaded on MOFs with high density (~2,500 strands/particle) via intrinsic, multivalent coordination between DNA backbone phosphate and unsaturated zirconium sites on MOFs...
October 12, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29023393/flavanol-rich-cocoa-powder-interacts-with-lactobacillus-rhamnossus-lgg-to-alter-the-antibody-response-to-infection-with-the-parasitic-nematode-ascaris-suum
#9
Saebyeol Jang, Sukla Lakshman, Ethiopia Beshah, Yue Xie, Aleksey Molokin, Bryan T Vinyard, Joseph F Urban, Cindy D Davis, Gloria I Solano-Aguilar
Consumption of the probiotic bacteria LactobacillusrhamnosusLGG and flavanol-rich cocoa have purported immune modulating effects. This study compared the host response to infection with Ascaris suum in three-month-old pigs fed a standard growth diet supplemented with a vehicle control: LGG, cocoa powder (CP) or LGG + CP. Pigs were inoculated with infective A. suum eggs during Week 5 of dietary treatment and euthanized 17 days later. Lactobacillus abundance was increased in pigs fed LGG or LGG + CP. Specific anti-A...
October 12, 2017: Nutrients
https://www.readbyqxmd.com/read/29021698/nonsaponin-fractions-of-korean-red-ginseng-extracts-prime-activation-of-nlrp3-inflammasome
#10
Byung-Cheol Han, Huijeong Ahn, Jiseon Lee, Eunsaem Jeon, Sanghoon Seo, Kyoung Hwa Jang, Seung-Ho Lee, Cheon Ho Kim, Geun-Shik Lee
BACKGROUND: Korean Red Ginseng extracts (RGE) have been suggested as effective immune modulators, and we reported that ginsenosides possess anti-inflammasome properties. However, the properties of nonsaponin components of RGE have not been well studied. METHODS: To assess the roles of nonsaponin fractions (NS) in NLRP3 inflammasome activation, we treated murine macrophages with or without first or second inflammasome activation signals with RGE, NS, or saponin fractions (SF)...
October 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29021606/higher-expression-of-toll-like-receptors-2-and-4-in-blood-cells-of-keratoconus-patiens
#11
Tomás Sobrino, Uxía Regueiro, Mercedes Malfeito, Alba Vieites-Prado, María Pérez-Mato, Francisco Campos, Isabel Lema
Inflammation may play a significant role in Keratoconus (KC), but the implication of immunity on this inflammatory response is unknown. Therefore, our aim was to determine the expression levels of Toll-like receptors 2 (TLR2) and 4 (TLR4) in monocytes and neutrophils from patients with KC and control subjects for demonstrating the role of innate immunity in KC. We also study the correlation between TLR2/TLR4 expression and serum levels of proinflammatory markers (IL-1β, IL-6, TNF-α, MMP-9 and NF-κB). Forty patients with bilateral KC (55% males; mean age; 33...
October 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29020088/expression-level-of-human-tlr4-rather-than-sequence-is-the-key-determinant-of-lps-responsiveness
#12
Adeline M Hajjar, Robert K Ernst, Jaehun Yi, Cathy S Yam, Samuel I Miller
To address the role of Toll-like receptor 4 (TLR4) single nucleotide polymorphisms (SNP) in lipopolysaccharide (LPS) recognition, we generated mice that differed only in the sequence of TLR4. We used a bacterial artificial chromosome (BAC) transgenic approach and TLR4/MD-2 knockout mice to specifically examine the role of human TLR4 variants in recognition of LPS. Using in vitro and in vivo assays we found that the expression level rather than the sequence of TLR4 played a larger role in recognition of LPS, especially hypoacylated LPS...
2017: PloS One
https://www.readbyqxmd.com/read/29018607/effects-of-astragalus-polysaccharide-on-the-adhesion-related-immune-response-of-endothelial-cells-stimulated-with-csfv-in-vitro
#13
Zengyu Zhuge, Yanpeng Dong, Liuan Li, Tianming Jin
BACKGROUND: Astragalus polysaccharide (APS) has immunomodulatory activities on porcine peripheral blood mononuclear cells. The immunomodulatory effects of APS on porcine endothelial cells (ECs) expose to classical swine fever virus (CSFV) remain unknown. METHODS: The virus was titrated using an indirect immune biotin enzyme standard method to confirm that porcine ECs were susceptible to CSFV infection and to determine the TCID50 of CSFV (C-strain). Porcine ECs were cultured with CSFV in the presence of APS...
2017: PeerJ
https://www.readbyqxmd.com/read/29018490/the-promotion-of-nephropathy-by-porphyromonas-gingivalis-lipopolysaccharide-via-toll-like-receptors
#14
Koichiro Kajiwara, Shunsuke Takata, Thao T To, Kenyo Takara, Yuji Hatakeyama, Sachio Tamaoki, Richard Peters Darveau, Hiroyuki Ishikawa, Yoshihiko Sawa
BACKGROUND: Recently, we reported that toll-like receptor (TLR)2 and TLR4 localized on the glomerular endothelium in the glomeruli of streptozotocin (STZ)-induced type 1 diabetic mice and high fat diet feed-induced type 2 diabetic mice, and that periodontal pathogen Porphyromonas gingivalis LPS (Pg-LPS) administration lowered the survival rate of diabetic mice. The present study aims to examine the effect of TLR4 blocking on the suppression of Pg-LPS-induced diabetic nephropathy. METHODS: The survival rate and morphological/biochemical features for streptozotocin-induced diabetic mice with Pg-LPS and TLR4 blocker eritoran administration were investigated by reporter gene assay, urine and blood analysis, immunohistochemistry, and real time-PCR...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/29018444/mucosa-associated-lymphoid-tissue-lymphoma-translocation-protein-1-positively-modulates-matrix-metalloproteinase-9-production-in-alveolar-macrophages-upon-toll-like-receptor-7-signaling-and-influenza-virus-infection
#15
Yu-Hsiang Lee, Juin-Hua Huang, Tzu-Hsuan Chang, Hung-Chih Yang, Betty A Wu-Hsieh
Influenza A virus (IAV) infection causes significant morbidity and mortality worldwide. Matrix metalloproteinase-9 (MMP-9) degrades extracellular matrix and is involved in the pathology of influenza. It has been reported that MMP-9 mediates neutrophil migration in IAV infection. Whether alveolar macrophages, the first immune cells that encounter IAV, produce MMP-9, and the mechanism of its regulation have never been investigated. As Toll-like receptor 7 (TLR7) is one of the receptors in innate immune cells that recognize IAV, we used TLR7 agonists and IAV to stimulate alveolar macrophage MH-S cells, primary macrophages, and bone marrow neutrophils...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29018440/human-gut-symbiont-roseburia-hominis-promotes-and-regulates-innate-immunity
#16
Angela M Patterson, Imke E Mulder, Anthony J Travis, Annaig Lan, Nadine Cerf-Bensussan, Valerie Gaboriau-Routhiau, Karen Garden, Elizabeth Logan, Margaret I Delday, Alistair G P Coutts, Edouard Monnais, Vanessa C Ferraria, Ryo Inoue, George Grant, Rustam I Aminov
OBJECTIVE: Roseburia hominis is a flagellated gut anaerobic bacterium belonging to the Lachnospiraceae family within the Firmicutes phylum. A significant decrease of R. hominis colonization in the gut of ulcerative colitis patients has recently been demonstrated. In this work, we have investigated the mechanisms of R. hominis-host cross talk using both murine and in vitro models. DESIGN: The complete genome sequence of R. hominis A2-183 was determined. C3H/HeN germ-free mice were mono-colonized with R...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29018409/innate-viral-receptor-signaling-determines-type-1-diabetes-onset
#17
REVIEW
Zachary J Morse, Marc S Horwitz
Heritable susceptibility of the autoimmune disorder, type 1 diabetes (T1D), only partially equates for the incidence of the disease. Significant evidence attributes several environmental stressors, such as vitamin D deficiency, gut microbiome, dietary antigens, and most notably virus infections in triggering the onset of T1D in these genetically susceptible individuals. Extensive epidemiological and clinical studies have provided credibility to this causal relationship. Infection by the enterovirus, coxsackievirus B, has been closely associated with onset of T1D and is considered a significant etiological agent for disease induction...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29017971/induction-of-suppressor-of-cytokine-signaling-3-via-hsf-1-hsp70-tlr4-axis-attenuates-neuroinflammation-and-ameliorates-postoperative-pain
#18
Yi-Xin Fan, Cheng Qian, Bingqian Liu, Chaoyu Wang, Haijiao Liu, Xiuxiu Pan, Peng Teng, Liang Hu, Guangqin Zhang, Yuan Han, Mi Yang, Xue-Feng Wu, Wen-Tao Liu
Postoperative pain is a common form of acute pain that, if not managed effectively, can become chronic pain. Evidence has shown that glia, especially microglia, mediate neuroinflammation, which plays a vital role in pain sensitization. Moreover, toll-like receptor 4 (TLR4), the tumor necrosis factor receptor (TNF-R), the interleukin-1 receptor (IL-1R), and the interleukin-6 receptor (IL-6R) have been considered key components in central pain sensitization and neuroinflammation. Therefore, we hypothesized that activation of the body's endogenous "immune brakes" will inhibit these receptors and achieve inflammation tolerance as well as relieve postoperative pain...
October 7, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29017949/tumor-necrosis-factor-receptor-associated-factor-3-from-anodonta-woodiana-is-an-important-factor-in-bivalve-immune-response-to-pathogen-infection
#19
Fufa Qu, Zhiming Xiang, Yingli Zhou, Yanping Qin, Ziniu Yu
Tumor necrosis factor receptor-associated factor 3 (TRAF3) is a multifunctional adaptor protein in innate and acquired immune system that plays a key role in the regulation of the RIG-I-like receptor (RLR) and Toll-like receptor (TLR) signaling pathway in mammals. However, the immune function of TRAF3 homologs in freshwater mollusks is not well understood. In this study, we identified a bivalve TRAF3 gene (AwTRAF3) from Anodonta woodiana and investigated its potential roles during immune challenges. The present AwTRAF3 encoded a polypeptide of 562 amino acids with predicted molecular mass of 64...
October 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29017773/tlr11-or-tlr12-silencing-reduces-leishmania-major-infection
#20
Divanshu Shukla, Himanshu Singh Chandel, Sunit Srivastava, Prashant Chauhan, Surya Prakash Pandey, Ashok Patidar, Raja Banerjee, Debprasad Chattopadhyay, Bhaskar Saha
Toll-like receptors (TLRs) recognize the pathogen-associated molecular patterns (PAMPs) and induce host-protective immune response. The role of the profilin-recognizing TLR11/TLR12 in Leishmania infection is unknown. Herein, we report that TLR11/ TLR12 expression increases in virulent L. major-infected macrophages but is prevented by miltefosine, an anti-leishmanial drug. While lipohosphoglycan (LPG) increases, LPG or TLR2 blockade prevents, the heightened TLR11/TLR12 expression. LPG-TLR2 interaction triggers MyD88- and TIRAP-mediated signaling enhancing ERK-1/2 activation and increased production of IL-10 that promotes TLR11/TLR12 expression...
October 7, 2017: Cytokine
keyword
keyword
75717
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"