keyword
MENU ▼
Read by QxMD icon Read
search

TLR-4

keyword
https://www.readbyqxmd.com/read/29331341/effects-of-the-gut-liver-axis-on-ischemia-mediated-hepatocellular-carcinoma-recurrence-in-the-mouse-liver
#1
Lorenzo A Orci, Stéphanie Lacotte, Vaihere Delaune, Florence Slits, Graziano Oldani, Vladimir Lazarevic, Carlo Rossetti, Laura Rubbia-Brandt, Philippe Morel, Christian Toso
BACKGROUND & AIMS: There is growing evidence that liver graft ischemia-reperfusion (I/R) is a risk factor for hepatocellular carcinoma (HCC) recurrence, but the involved mechanisms are unclear. Here, we tested the hypothesis that mesenteric congestion due to portal blood flow interruption induces endotoxin-mediated Toll-Like Receptor 4 (Tlr4) engagement, resulting in elevated liver cancer burden. We also assessed the role of remote ischemic preconditioning (RIPC) in this context. METHODS: C57Bl/6j mice were exposed to standardized models of liver I/R injury and RIPC, by occluding hepatic and femoral blood vessels...
January 10, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29329218/molecular-and-physiological-effects-on-the-small-intestine-of-weaner-pigs-following-feeding-with-deoxynivalenol-contaminated-feed
#2
J Alex Pasternak, Vaishnavi Iyer Aka Aiyer, Glenn Hamonic, A Denise Beaulieu, Daniel A Columbus, Heather L Wilson
We intended to assess how exposure of piglets to deoxynivalenol (DON)-contaminated feed impacted their growth, immune response and gut development. Piglets were fed traditional Phase I, Phase II and Phase III diets with the control group receiving 0.20-0.40 ppm DON (referred to as the Control group) and treatment group receiving much higher level of DON-contaminated wheat (3.30-3.80 ppm; referred to as DON-contaminated group). Feeding a DON-contaminated diet had no impact on average daily feed intake (ADFI) (p < 0...
January 12, 2018: Toxins
https://www.readbyqxmd.com/read/29325294/-effects-of-lactobacillus-paracasei-n1115-combined-with-fructooligosaccharides-on-non-alcoholic-fatty-liver-disease-induced-by-high-fat-diet-in-mice
#3
F F Yao, P Y Zheng, H Huang, L M Bai, Y R Ding, L Mei, S M Liu
Objective: To investigate the effects of Lactobacillus paracasei N1115 combined with fructooligosaccharides (FOS) on non-alcoholic fatty liver disease (NAFLD) in mice and its possible mechanism. Methods: A total of 50 male C57 mice were randomly and equally divided into five experimental groups. Group 1 received a normal diet (ND). Other four groups received a high-fat diet (HFD) to establish NAFLD models. In addition to HFD, group 3 received Lactobacillus paracasei N1115 (2.2×10(9) CFU/mL), group 4 received FOS (4 g/kg per day), and group 5 received Lactobacillus paracasei N1115 (2...
December 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/29324261/platelet-toll-like-receptor-and-its-ligand-hmgb-1-expression-is-increased-in-the-left-atrium-of-atrial-fibrillation-patients
#4
Kadri Murat Gurses, Duygu Kocyigit, Muhammed Ulvi Yalcin, Hande Canpinar, Banu Evranos, Ugur Canpolat, Hikmet Yorgun, Levent Sahiner, Dicle Guc, Kudret Aytemir
BACKGROUND: Atrial fibrillation(AF) is the most common sustained arrhythmia. Its most feared sequelae are stroke and peripheral thromboembolism due to atrial thrombi formation. Mechanisms underlying the relationship between platelet activation and left atrial thrombi have not been clearly elucidated yet. We aimed to investigate whether immune-mediated platelet activation occurred in AF patients in this cross-sectional study. METHODS: Persistent and paroxysmal AF patients who underwent cryoballoon-based AF ablation between March 2015 and July 2016 were included as the patient group...
January 8, 2018: Cytokine
https://www.readbyqxmd.com/read/29313272/tenascin-c-a-biomarker-of-disease-activity-in-early-ankylosing-spondylitis
#5
Latika Gupta, Shruti Bhattacharya, Amita Aggarwal
Monocytes of patients with ankylosing spondylitis (AS) over-express toll-like receptor (TLR) 4. Tenascin-C (TNC) is an endogenous TLR4 ligand. Thus, we studied the serum and synovial fluid levels of TNC in AS. TNC was measured in serum of 36 AS patients (ASAS 2010 criteria) and 39 healthy controls by ELISA. Twenty-two patients were followed up after 3 months of standard treatment. Five paired serum-synovial fluid samples were also analyzed. Disease activity was assessed by BASDAI, ASDAS, swollen joint count, ESR, and CRP...
January 8, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29304519/effect-of-n-acetylserotonin-on-tlr-4-and-myd88-expression-during-intestinal-ischemia-reperfusion-in-a-rat-model
#6
Igor Sukhotnik, Yoav Ben Shahar, Salim Halabi, Nir Bitterman, Tatiana Dorfman, Yulia Pollak, Arnold Coran, Arie Bitterman
BACKGROUND:  Accumulating evidence indicates that changes in intestinal toll-like receptors (TLRs) precede histological injury in a rodent model of necrotizing enterocolitis. N-acetylserotonin (NAS) is a naturally occurring chemical intermediate in the biosynthesis of melatonin. A recent study has shown that treatment with NAS prevents gut mucosal damage and inhibits programmed cell death following intestinal ischemia-reperfusion (IR). The objective of this study was to determine the effects of NAS on TLR-4, myeloid differentiation factor 88 (Myd88), and TNF-α receptor-associated factor 6 (TRAF6) expression in intestinal mucosa following intestinal IR in a rat...
January 5, 2018: European Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29303613/cellular-differentiation-of-non-transformed-intestinal-epithelial-cells-is-regulated-by-lactobacillus-rhamnosus-and-l-casei-strains
#7
J Kolinska, M Zakostelecka, Z Zemanova, V Lisa, J Golias, H Kozakova, B Dvorak
The aim of this study was to characterize an in vitro modulating effect of three commensal Lactobacillus strains on cellular differentiation of non-transformed crypt-like rat small intestinal cell line IEC-18. IEC-18 was grown on extracellular matrix (ECM), with or without presence of Lactobacillus strains. Gene expression of IEC-18 bacterial detection system - such as Toll-like receptors TLR-2, TLR-4, signal adapter MyD88, cytoplasmic NOD2 receptor, inflammatory cytokines IL-18, IL-1beta, chemokine IL-8 and enzyme caspase-1 - was evaluated using real-time PCR...
January 5, 2018: Physiological Research
https://www.readbyqxmd.com/read/29300007/sooty-mangabey-genome-sequence-provides-insight-into-aids-resistance-in-a-natural-siv-host
#8
David Palesch, Steven E Bosinger, Gregory K Tharp, Thomas H Vanderford, Mirko Paiardini, Ann Chahroudi, Zachary P Johnson, Frank Kirchhoff, Beatrice H Hahn, Robert B Norgren, Nirav B Patel, Donald L Sodora, Reem A Dawoud, Caro-Beth Stewart, Sara M Seepo, R Alan Harris, Yue Liu, Muthuswamy Raveendran, Yi Han, Adam English, Gregg W C Thomas, Matthew W Hahn, Lenore Pipes, Christopher E Mason, Donna M Muzny, Richard A Gibbs, Daniel Sauter, Kim Worley, Jeffrey Rogers, Guido Silvestri
In contrast to infections with human immunodeficiency virus (HIV) in humans and simian immunodeficiency virus (SIV) in macaques, SIV infection of a natural host, sooty mangabeys (Cercocebus atys), is non-pathogenic despite high viraemia. Here we sequenced and assembled the genome of a captive sooty mangabey. We conducted genome-wide comparative analyses of transcript assemblies from C. atys and AIDS-susceptible species, such as humans and macaques, to identify candidates for host genetic factors that influence susceptibility...
January 3, 2018: Nature
https://www.readbyqxmd.com/read/29295636/caffeine-prevents-bilirubin-induced-cytotoxicity-in-cultured-newborn-rat-astrocytes
#9
Mehmet Deliktaş, Hacer Ergin, Aydın Demiray, Hakan Akça, Özmert M A Özdemir, Mehmet Bülent Özdemir
OBJECTIVE: Unconjugated bilirubin (UCB) may cause neurotoxicity in preterm neonates due to immaturity of UGT1A1 leading to bilirubin accumulation in the brain. Caffeine used in the treatment of apnea of prematurity was reported to decrease mechanical ventilation requirement, the frequencies of bronchopulmonary dysplasia, patent ductus arteriosus, cerebral palsy and neurodevelopmental disorders in very low birth weight infants. However, the effect of caffeine on hyperbilirubinemia was not yet clarified...
January 2, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29286109/the-protective-effects-of-magnolol-on-acute-trinitrobenzene-sulfonic-acid%C3%A2-induced-colitis-in-rats
#10
Yong Zhang, Li-Tang Fu, Fang Tang
The present study aimed to investigate the protective effects of magnolol on acute 2,4,6-trinitrobenzene sulfonic acid (TNBS)‑induced colitis, and its underlying mechanisms. Experimental colitis was induced by intracolonic administration of TNBS/ethanol into rats. The model rats were randomly assigned into groups: TNBS, magnolol (high, medium and low doses), and salazosulfapyridine (positive control). All intervention regimens were administered by oral gavage, once a day for 7 consecutive days, 24 h after colitis induction...
December 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29285127/glutamine-ameliorates-lipopolysaccharide-induced-cardiac-dysfunction-by-regulating-the-toll-like-receptor-4-mitogen-activated-protein-kinase-nuclear-factor-kb-signaling-pathway
#11
Wen-Bin Zhang, Hai-Yue Zhang, Qian Zhang, Fang-Zhou Jiao, Hong Zhang, Lu-Wen Wang, Zuo-Jiong Gong
The inflammatory response of sepsis induced by lipopolysaccharide (LPS) may result in irreversible cardiac dysfunction. Glutamine (GLN) has a multitude of pharmacological effects, including anti-inflammatory abilities. Previous studies have reported that GLN attenuated LPS-induced acute lung injury and intestinal mucosal injury. The present study investigated whether GLN exerts potential protective effects on LPS-induced cardiac dysfunction. Male Sprague-Dawley rats were divided into three groups (15 rats per group), including the control (saline-treated), LPS and LPS+GLN groups...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29282520/tgf%C3%AE-counteracts-lyve-1-mediated-induction-of-lymphangiogenesis-by-small-hyaluronan-oligosaccharides
#12
Jochen Bauer, Melanie Rothley, Anja Schmaus, Luca Quagliata, Markus Ehret, Moritz Biskup, Véronique Orian-Rousseau, David G Jackson, Ronald J Pettis, Alfred Harvey, Stefan Bräse, Wilko Thiele, Jonathan P Sleeman
During tissue injury, inflammation, and tumor growth, enhanced production and degradation of the extracellular matrix glycosaminoglycan hyaluronan (HA) can lead to the accumulation of small HA (sHA) oligosaccharides. We have previously reported that accumulation of sHA in colorectal tumors correlates with lymphatic invasion and lymph node metastasis, and therefore, investigated here are the effects of sHA on the lymphatic endothelium. Using cultured primary lymphatic endothelial cells (LECs) and ex vivo and in vivo lymphangiogenesis assays, we found that in contrast to high-molecular-weight HA (HMW-HA), sHA of 4-25 disaccharides in length can promote the proliferation of LECs and lymphangiogenesis in a manner that is dependent on their size and concentration...
December 27, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/29276776/periodontitis-in-ch%C3%A3-diak-higashi-syndrome-an-altered-immunoinflammatory-response
#13
V Thumbigere Math, P Rebouças, P A Giovani, R M Puppin-Rontani, R Casarin, L Martins, L Wang, K Krzewski, W J Introne, M J Somerman, F H Nociti, K R Kantovitz
Chédiak-Higashi syndrome (CHS), a rare autosomal recessive disorder caused by mutations in the lysosomal trafficking regulator gene (LYST), is associated with aggressive periodontitis. It is suggested that LYST mutations affect the toll-like receptor (TLR)-mediated immunoinflammatory response, leading to frequent infections. This study sought to determine the periodontal status of patients with classic (severe) and atypical (milder) forms of CHS and the immunoregulatory functions of gingival fibroblasts in CHS patients...
January 2018: JDR Clinical and Translational Research
https://www.readbyqxmd.com/read/29274625/inhibition-of-myocardial-hypertrophy-by-magnesium-isoglycyrrhizinate-through-the-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway-in-mice
#14
REVIEW
Donglai Ma, Jianping Zhang, Yuanyuan Zhang, Xuan Zhang, Xue Han, Tao Song, Ying Zhang, Li Chu
Magnesium isoglycyrrhizinate (MgIG) is a magnesium salt of the 18-α glycyrrhizic acid stereoisomer that has exhibited hepato-protective effects and has anti-inflammatory, antioxidant, and antiviral activities. Here, we have investigated the effects and potential mechanisms of action of MgIG, with respect to myocardial fibrosis induced by isoproterenol (ISO) in mice. Mice were administered MgIG for 14days, with concurrent ISO dosing, and were sacrificed two weeks later. Lactate dehydrogenase (LDH) and creatine kinase (CK) concentrations were measured in the blood...
December 20, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29274416/dectin-1-mediates-the-immunoenhancement-effect-of-the-polysaccharide-from-dictyophora-indusiata
#15
Chao Deng, Haitian Fu, Jingying Shang, Jinghua Chen, Xin Xu
The polysaccharides (DIP) extracted from Dictyophora indusiate has been found featuring great anti-cancer activity through enhancing organism immunity ability, and the DIP-induced macrophages activation might be mediated via TLR4/NF-κB signaling pathway. In this work, we make further investigation of the effect of DIP on macrophages and whether there was another pathway to regulate the immunoenhancement effect of DIP. The results showed that DIP could activate macrophages, causing the enhancement of its phagocyte activity, and then increase the secretion of IL-1β and TNF-α...
December 20, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29248453/reishi-mushroom-ganoderma-lucidum-modulates-iga-production-and-alpha-defensin-expression-in-the-rat-small-intestine
#16
Atsuhito Kubota, Masaki Kobayashi, Sota Sarashina, Reiko Takeno, Keisuke Okamoto, Katsuya Narumi, Ayako Furugen, Yuji Suzuki, Natsuko Takahashi, Ken Iseki
ETHNOPHARMACOLOGICAL RELEVANCE: Immunoglobulin A (IgA) secretion and alpha-defensins play a role in the innate immune system to protect against infection. Ganoderma lucidum (W.Curt.:Fr.) P. Karst. (Reishi) is a well-known mushroom in traditional Chinese medicine. This study aimed to determine the effects of Reishi on IgA secretion from Peyer's patch (PP) cells and alpha-defensin-5 (RD-5) and RD-6 expression in the rat small intestine. MATERIALS AND METHODS: The rats received an oral injection of 0...
December 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29241180/high-mobility-group-box1-inhibitor-glycyrrhizic-acid-attenuates-kidney-injury-in-streptozotocin-induced-diabetic-rats
#17
Hong Zhang, Ru Zhang, Juan Chen, Min Shi, Wei Li, Xiangcheng Zhang
BACKGROUND/AIMS: High mobility group box 1 (HMGB1) is an important mediator of the inflammatory response. It has been implicated in the pathogenesis of autoimmune diseases, atherosclerosis, and obesity. However, the effects of HMGB1 on diabetic nephropathy remain unclear. Here, we investigated the potential roles and mechanisms of an HMGB1 inhibitor, glycyrrhizic acid (GA), in renal injury with the streptozotocin (STZ)-induced rat model. METHODS: The diabetic rat was generated by intraperitoneal injection of STZ and then treated with the HMGB1 inhibitor GA or saline for 8 weeks...
November 15, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29212341/scavenging-reactive-oxygen-species-production-normalizes-ferroportin-expression-and-ameliorates-cellular-and-systemic-iron-disbalances-in-hemolytic-mouse-model
#18
Naveen Kumar Tangudu, Betuel Alan, Francesca Vinchi, Katharina Woerle, Dilay Lai, Sabine Vettorazzi, Kerstin Leopold, Maja Vujic Spasic
AIMS: The release of large amounts of free heme into the circulation, overproduction of reactive oxygen species (ROS) and the activation of toll-like receptor (Tlr)-4 dependent responses are considered critical for the ability of heme to promote oxidative stress and to initiate pro-inflammatory responses, posing a serious threat to the body. A deep understanding of the consequences of heme overload on the regulation of cellular and systemic iron homeostasis is however, still lacking. RESULTS: The effects of heme on iron metabolism were studied in primary macrophages and in mouse models of acute and chronic hemolysis...
December 6, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29211798/lipl21-lipoprotein-binding-to-peptidoglycan-enables-leptospira-interrogans-to-escape-nod1-and-nod2-recognition
#19
Gwenn Ratet, Ignacio Santecchia, Martine Fanton d'Andon, Frédérique Vernel-Pauillac, Richard Wheeler, Pascal Lenormand, Frédéric Fischer, Pierre Lechat, David A Haake, Mathieu Picardeau, Ivo G Boneca, Catherine Werts
Leptospirosis is a widespread zoonosis, potentially severe in humans, caused by spirochetal bacteria, Leptospira interrogans (L. interrogans). Host defense mechanisms involved in leptospirosis are poorly understood. Recognition of lipopolysaccharide (LPS) and lipoproteins by Toll-Like Receptors (TLR)4 and TLR2 is crucial for clearance of leptospires in mice, yet the role of Nucleotide Oligomerization Domain (NOD)-like receptors (NOD)1 and NOD2, recognizing peptidoglycan (PG) fragments has not previously been examined...
December 6, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29205369/regulatory-b-cells-induced-by-ultraviolet-b-through-toll-like-receptor-4-signalling-contribute-to-the-suppression-of-contact-hypersensitivity-responses-in-mice
#20
Xiaoming Liu, Haiyan Huang, Hongbin Gao, Xia Wu, Wei Zhang, Bo Yu, Xia Dou
BACKGROUND: Ultraviolet (UV) B irradiation is known to suppress contact hypersensitivity (CHS) responses in mouse models by suppressing immune responses. However, the cellular mechanisms responsible for UVB-induced systemic suppression remain unclear. Regulatory B cells have been reported to play an inhibitory role during CHS. It is presently unknown whether regulatory B cells contribute to the effect of UVB phototherapy. OBJECTIVE: To investigate the inductive effect of UVB on regulatory B cells and the underlying mechanisms by using a CHS mouse model...
December 5, 2017: Contact Dermatitis
keyword
keyword
80305
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"