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https://www.readbyqxmd.com/read/28645296/myd88-dependent-pro-interleukin-1%C3%AE-induction-in-dendritic-cells-exposed-to-food-grade-synthetic-amorphous-silica
#1
Hans Christian Winkler, Julian Kornprobst, Peter Wick, Lea Maria von Moos, Ioannis Trantakis, Elisabeth Maria Schraner, Barbara Bathke, Hubertus Hochrein, Mark Suter, Hanspeter Naegeli
BACKGROUND: Dendritic cells (DCs) are specialized first-line sensors of foreign materials invading the organism. These sentinel cells rely on pattern recognition receptors such as Nod-like or Toll-like receptors (TLRs) to launch immune reactions against pathogens, but also to mediate tolerance to self-antigens and, in the intestinal milieu, to nutrients and commensals. Since inappropriate DC activation contributes to inflammatory diseases and immunopathologies, a key question in the evaluation of orally ingested nanomaterials is whether their contact with DCs in the intestinal mucosa disrupts this delicate homeostatic balance between pathogen defense and tolerance...
June 23, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28638224/inhibitory-effect-of-oxymatrine-on-hepatocyte-apoptosis-via-tlr4-pi3k-akt-gsk-3%C3%AE-signaling-pathway
#2
Xian Zhang, Wei Jiang, Ai-Ling Zhou, Min Zhao, Dao-Rong Jiang
AIM: To evaluate the effect of oxymatrine (OMT) on hepatocyte apoptosis in rats with lipopolysaccharide (LPS)/D-galactosamine (D-GalN)-induced acute liver failure (ALF). METHODS: LPS/D-GalN was used to establish a model of ALF in rats. To evaluate the effect of OMT, we assessed apoptosis by transmission electron microscopy, and the pathological changes in the liver by light microscopy with hematoxylin and eosin staining. An automated biochemical analyzer was used to measure serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST)...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28629622/optical-coherence-tomography-compared-with-fractional-flow-reserve-guided-approach-in-acute-coronary-syndromes-a-propensity-matched-analysis
#3
Fabrizio D'Ascenzo, Mario Iannaccone, Ovidio De Filippo, Antonio Maria Leone, Giampaolo Niccoli, Filippo Zilio, Fabrizio Ugo, Enrico Cerrato, Massimo Fineschi, Massimo Mancone, Stefano Rigattieri, Nicolas Amabile, Marco Ferlini, Gennaro Sardella, Alberto Cresti, Umberto Barbero, Pascal Motreff, Francesco Colombo, Salvatore Colangelo, Roberto Garbo, Giuseppe Biondi-Zoccai, Corrado Tamburino, Antonio Montefusco, Pierlugi Omedè, Claudio Moretti, Maurizio D'amico, Geraud Souteyrand, Fiorenzo Gaita, Ugo Limbruno, Andrea Picchi
AIM: To compare in patients with ACS (acute coronary syndromes) a PCI (percutaneous coronary intervention) approach based on FFR (fractional flow reserve) vs. one based on OCT (optical coherence tomography). METHODS AND RESULTS: Consecutive patients admitted for ACS and treated with a PCI approach based on OCT or on FFR (recruited in two different studies) were compared and matched with propensity score analysis. Target Lesion revascularization (TLR) was the primary end point, while major adverse cardiovascular events [MACEs defined as the composite of death from cardiac causes, non-fatal MI, clinically driven target vessel revascularization (TVR), or re-hospitalization due to unstable angina] were the secondary ones...
June 3, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28626766/involvement-of-the-toll-like-receptor-nitric-oxide-signaling-pathway-in-the-pathogenesis-of-cervical-cancer-caused-by-high-risk-human-papillomavirus-infection
#4
Jie Li, Heping Rao, Chang'e Jin, Jinrong Liu
Human papillomavirus (HPV) can activate Toll-like receptor (TLR)/nitric oxide (NO) signaling pathways; however, whether the TLR/NO pathway is involved in cervical cancer caused by high-risk HPV (HR-HPV) remains unclear. In this study, 43 HR-HPV-positive patients with cervical cancer (CC group), 39 HR-HPV-positive patients with a healthy cervix (HR-HPV group), and 33 HR-HPV-negative controls were recruited. NO concentration in cervical canal and expression of inducible NO synthase (iNOS) in cervical tissues were detected...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28626202/stent-fracture-and-peri-stent-contrast-staining-after-everolimus-eluting-stent-implantation%C3%A3-5-year-outcomes
#5
Katsuya Miura, Takeshi Tada, Akinune Kuwayama, Takenobu Shimada, Masanobu Ohya, Hidewo Amano, Shunsuke Kubo, Yusuke Hyodo, Suguru Otsuru, Seiji Habara, Hiroyuki Tanaka, Yasushi Fuku, Tsuyoshi Goto, Kazushige Kadota
BACKGROUND: Stent fracture (SF) and peri-stent contrast staining (PSS) after sirolimus-eluting stent implantation are reported to be risk factors of adverse events. However, the effect of these after everolimus-eluting stent (EES) implantation on long-term outcomes remains unclear.Methods and Results:The study sample comprised 636 patients (1,081 lesions) undergoing EES implantation in 2010 and follow-up angiography within 1 year. The 5-year cumulative rates of target lesion revascularization (TLR) and major adverse cardiac events (MACE: a combination of all-cause death, myocardial infarction, and TLR) were compared between patients with and without SF or PSS...
June 13, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28624224/optimizing-the-dna-donor-template-for-homology-directed-repair-of-double-strand-breaks
#6
Fei Song, Knut Stieger
The CRISPR-Cas (clustered regularly interspaced short palindromic repeats-associated proteins) technology enables rapid and precise genome editing at any desired genomic position in almost all cells and organisms. In this study, we analyzed the impact of different repair templates on the frequency of homology-directed repair (HDR) and non-homologous end joining (NHEJ). We used a stable HEK293 cell line expressing the traffic light reporter (TLR-3) system to quantify HDR and NHEJ events following transfection with Cas9, eight different guide RNAs, and a 1,000 bp donor template generated either as circular plasmid, as linearized plasmid with long 3' or 5' backbone overhang, or as PCR product...
June 16, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28623271/decoy-peptide-targeted-to-toll-il-1r-domain-inhibits-lps-and-tlr4-active-metabolite-morphine-3-glucuronide-sensitization-of-sensory-neurons
#7
Yohance M Allette, Youngsook Kim, Aaron L Randolph, Jared A Smith, Matthew S Ripsch, Fletcher A White
Accumulating evidence indicates that Toll-like receptor (TLR) signaling adapter protein interactions with Toll/Interleukin-1 Receptor (TIR) domains present in sensory neurons may modulate neuropathic pain states. Following ligand interaction with TLRs, TIR serves to both initiate intracellular signaling and facilitate recruitment of signaling adapter proteins to the intracytoplasmic domain. Although TLR TIR is central to a number of TLR signaling cascades, its role in sensory neurons is poorly understood. In this study we investigated the degree to which TLR TIR decoy peptide modified to include a TAT sequence (Trans-Activator of Transcription gene in HIV; TAT-4BB) affected LPS-induced intracellular calcium flux and excitation in sensory neurons, and behavioral changes due to TLR4 active metabolite, morphine-3-glucuronide (M3G) exposure in vivo...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28621230/lncrna-crnde-triggers-inflammation-through-the-tlr3-nf-%C3%AE%C2%BAb-cytokine-signaling-pathway
#8
Haowen Li, Qi Li, Tao Guo, Wenyan He, Chengya Dong, Yajie Wang
Colorectal neoplasia differentially expressed (CRNDE), an oncogene, is highly expressed in many tumor cells and affects cellular proliferation, migration, invasion, and apoptosis. Its function and mechanism of action is a research hotspot. In this study, microarray analysis was performed to discover the differentially expressed genes in CRNDE over-expression cells. RT² Profiler PCR Array was used to study the expression of genes related to the toll-like receptor (TLR) pathway. We found that over-expression of CRNDE in astrocytes increased the expression of key factors in the toll-like receptor signaling pathway, especially toll-like receptor-3-mediated MyD88-independent pathway...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28620391/toll-like-receptor-dependent-negative-effects-of-opioids-a-battle-between-analgesia-and-hyperalgesia
#9
REVIEW
Masaud Shah, Sangdun Choi
Our understanding of the pathophysiology of the pathological pain and the pharmacology of analgesic treatments has progressed tremendously over the past two decades. Among the well-documented pro-algesic factors, glia and other toll-like receptors (TLRs)-expressing cells in the neuroimmune interface have been recognized for their role in the development of neuropathic pain and for compromising the analgesic effects of opioids. Here, we comprehensively review the molecular mechanisms of pain initiation and progression, the role of TLRs in these processes, and the molecular mechanisms of morphine and morphine-3-glucuronide in TLR-dependent central immune signaling...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28620261/single-nucleotide-polymorphism-based-genetic-diversity-analysis-of-the-kilakarsal-and-vembur-sheep-breeds
#10
Rathinasamy Selvam, Nagarajan Murali, A Kannan Thiruvenkadan, Ramesh Saravanakumar, Gurusamy Ponnudurai, Thilak Pon Jawahar
AIM: The present study was thus undertaken to analyze the genetic diversity of Kilakarsal and Vembur sheep breeds using single-nucleotide polymorphism (SNP) markers within Toll-like receptor (TLR) 3, 5, 6, 9, and 10 genes. MATERIALS AND METHODS: Competitive allele-specific polymerase chain reaction (PCR)-based end-point genotyping was performed using real-time PCR to type the SNPs. Allele discrimination module implemented in real-time PCR was utilized to call the genotypes based on fluorescence intensity recorded for each of the two alleles...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28613415/composition-and-functionality-of-the-intrahepatic-innate-lymphoid-cell-compartment-in-human-non-fibrotic-and-fibrotic-livers
#11
Marianne Forkel, Lena Berglin, Eliisa Kekäläinen, Adrian Carlsson, Emma Svedin, Jakob Michaëlsson, Maho Nagasawa, Jonas S Erjefält, Michiko Mori, Malin Flodström-Tullberg, Annika Bergquist, Hans-Gustaf Ljunggren, Magnus Westgren, Ulrik Lindforss, Danielle Friberg, Carl Jorns, Ewa Ellis, Niklas K Björkström, Jenny Mjösberg
Human innate lymphoid cells have been described to exist in different organs, with functional deregulation of these cells contributing to several disease states. Here, we performed the first detailed characterization of the phenotype, tissue-residency properties and functionality of ILC1s, ILC2s and ILC3s in the human adult and fetal liver. In addition, we investigated changes in the ILC compartment in liver fibrosis. A unique composition of tissue-resident ILCs was observed in non-fibrotic livers as compared with that in mucosal tissues, with NKp44(-) ILC3s accounting for the majority of total intrahepatic ILCs...
June 14, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28612711/alleviative-effects-from-boswellic-acid-on-acetaminophen-induced-hepatic-injury-corrected-and-republished-from-biomedicine-taipei-2016-jun-6-2-9-doi-10-7603-s40681-016-0009-1pmcid-pmc4864770
#12
Lung-Che Chen, Li-Hong Hu, Mei-Chin Yin
Protective effects of boswellic acid (BA) against acetaminophen (APAP)-induced hepatotoxicity in Balb/ cA mice were examined. BA, at 0.05 or 0.1%, was supplied for 4 weeks. Acute liver injury was induced by APAP treatment. Results showed that BA intake increased hepatic BA bioavailability. APAP treatment decreased glutathione (GSH) level, increased reactive oxygen species (ROS) and oxidized glutathione (GSSG) production; and lowered activity and protein expression of glutathione reductase (GR) and heme oxygenase (HO)-1 in liver...
June 2017: BioMedicine
https://www.readbyqxmd.com/read/28611779/diametric-role-of-the-latency-associated-protein-acr1-of-mycobacterium-tuberculosis-in-modulating-the-functionality-of-pre-and-post-maturational-stages-of-dendritic-cells
#13
Mohammed Amir, Mohammad Aqdas, Sajid Nadeem, Kaneez F Siddiqui, Nargis Khan, Javaid A Sheikh, Javed N Agrewala
It is instrumental for the Mycobacterium tuberculosis (Mtb) to persist within its host in dormancy. Mtb represses most of its metabolic machinery during latency, but upregulates the expression of latency-associated protein alpha-crystallin protein (Acr1). Therefore, it is imperative to understand how throughout dormancy, Mtb employs Acr1 to regulate the host immunity. This study reveals that Acr1 exhibits divergent effect on the pre- and post-maturation stages of dendritic cells (DCs). In the current study, we demonstrate that early encounter of bone marrow cells with Acr1 while differentiating into DCs (AcrDC(pre)), leads to impairment in their maturation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28609685/palmitate-induces-vsmc-apoptosis-via-toll-like-receptor-tlr-4-ros-p53-pathway
#14
Yuanjun Zhang, Guanghao Xia, Yaqiong Zhang, Juxiang Liu, Xiaowei Liu, Weihua Li, Yaya Lv, Suhong Wei, Jing Liu, Jinxing Quan
BACKGROUND AND AIMS: Toll-like receptor 4 (TLR4) has been implicated in vascular inflammation, as well as in the pathogenesis of atherosclerosis and diabetes. Vascular smooth muscle cell (VSMC) apoptosis has been shown to induce plaque vulnerability in atherosclerosis. Previous studies reported that palmitate induced apoptosis in VSMCs; however, the role of TLR4 in palmitate-induced apoptosis in VSMCs has not yet been defined. In this study, we investigated whether or not palmitate-induced apoptosis depended on the activation of the TLR4 pathway...
June 3, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28606413/leishmania-donovani-infection-activates-tlr-2-4-expressions-and-tgf-%C3%AE-mediated-apoptosis-in-renal-tissues
#15
Vinod Kumar, Neeraj Tiwari, Mallikarjun Rao Gedda, Rizwanul Haque, Rakesh K Singh
The present study was aimed to identify the underlying mechanisms of improper renal function in Leishmania donovani infection that causes VL. Mice (BALB/c) were infected with L. donovani and different parameters for proteinuria were assessed. The levels of superoxide anion (O2(-)), hydrogen peroxide (H2O2), lipid peroxidation (MDA), inflammatory cytokines, and toll-like receptor (TLR) 2 and 4 expression were found significantly elevated at 60th day in these animals and declined at 90th day post infection. However, TGF-β and caspase 3 activities were higher at 90th day in comparison to 60th day post infection...
June 9, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28600193/functional-and-molecular-responses-of-the-blue-mussel-mytilus-edulis-hemocytes-exposed-to-cadmium-an-in-vitro-model-and-transcriptomic-approach
#16
Philippine Granger Joly de Boissel, Michel Fournier, Juan Carlos Rodriguez-Lecompte, Patty McKenna, Frederick Kibenge, Ahmed Siah
The bivalve mollusk, Mytilus edulis, is used as a sentinel species in several monitoring programs due to its ability to bio-accumulate contaminants. Its immune system consists of hemocytes and humoral components, which constitute the main part of the hemolymph. The present study is aimed at understanding the effects of Cd on the differentially expressed genes involved in the phagocytosis of M. edulis' hemocytes. Our approach focuses on an in vitro model by exposing hemocytes to different concentrations of Cd ranging from 10(-9) M to 10(-3) M...
June 6, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28595383/cooperative-interactions-between-toll-like-receptor-2-and-toll-like-receptor-4-in-murine-klebsiella-pneumoniae-infections
#17
Hee-Yeon Jeon, Jong-Hyung Park, Jin-Il Park, Jun-Young Kim, Sun-Min Seo, Seung-Hoon Ham, Eui-Suk Jeong, Yang-Kyu Choi
Klebsiella pneumoniae is an opportunistic and clinically significant emerging pathogen. We investigated the relative roles of Toll-like receptor (TLR) 2 and TLR4 in initiating host defenses against K. pneumoniae. TLR2 knockout (KO), TLR4 KO, TLR2/4 double KO (DKO), and wild-type (WT) mice were inoculated with K. pneumoniae. Mice in each group were sacrificed after either 12 or 24 hours, and lungs, livers, and blood were harvested to enumerate bacterial colony-forming units (CFU). Cytokine and chemokine levels were analyzed using enzyme-linked immunosorbent assay and real-time PCR, and pneumonia severity was determined by histopathological analysis...
June 8, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28594834/toll-like-receptor-mediated-activation-is-possibly-involved-in-immunoregulating-properties-of-cow-s-milk-hydrolysates
#18
M B Gea Kiewiet, Renske Dekkers, Marjan Gros, R J Joost van Neerven, Andre Groeneveld, Paul de Vos, Marijke M Faas
Immunomodulating proteins and peptides are formed during the hydrolysis of cow's milk proteins. These proteins are potential ingredients in functional foods used for the management of a range of immune related problems, both in infants and adults. However, the mechanism behind these effects is unknown. We hypothesize that the interaction of peptides with Toll-like receptors (TLRs) can induce immune effects, since these receptors are known to sample many dietary molecules in the intestine in order to regulate immune effects...
2017: PloS One
https://www.readbyqxmd.com/read/28593786/characterization-of-liver-changes-in-zsf1-rats-an-animal-model-of-metabolic-syndrome
#19
Marta Borges Canha, José Pedro Portela-Cidade, Glória Conceição, Cláudia Sousa-Mendes, Sara Leite, Dulce Fontoura, Daniel Moreira-Gonçalves, Inês Falcão-Pires, André Lourenço, Adelino Leite-Moreira, Pedro Pimentel-Nunes
BACKGROUND: The non-alcoholic fatty liver disease is the hepatic counterpart of the metabolic syndrome. ZSF1 rats are a metabolic syndrome animal model in which liver changes have not been described yet. AIM: The characterization of liver histological and innate immunity changes in ZSF1 rats. METHODS: Five groups of rats were included (n = 7 each group): healthy Wistar-Kyoto control rats (Ctrl), hypertensive ZSF1 lean (Ln), ZSF1 obese rats with a normal diet (Ob), ZSF1 obese rates with a high-fat diet (Ob-HFD), and ZSF1 obese rats with low-intensity exercise training (Ob-Ex)...
June 8, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28592438/cd14-cd15-hla-dr-myeloid-derived-suppressor-cells-impair-antimicrobial-responses-in-patients-with-acute-on-chronic-liver-failure
#20
Christine Bernsmeier, Evangelos Triantafyllou, Robert Brenig, Fanny J Lebosse, Arjuna Singanayagam, Vishal C Patel, Oltin T Pop, Wafa Khamri, Rooshi Nathwani, Robert Tidswell, Christopher J Weston, David H Adams, Mark R Thursz, Julia A Wendon, Charalambos Gustav Antoniades
OBJECTIVE: Immune paresis in patients with acute-on-chronic liver failure (ACLF) accounts for infection susceptibility and increased mortality. Immunosuppressive mononuclear CD14(+)HLA-DR(-) myeloid-derived suppressor cells (M-MDSCs) have recently been identified to quell antimicrobial responses in immune-mediated diseases. We sought to delineate the function and derivation of M-MDSC in patients with ACLF, and explore potential targets to augment antimicrobial responses. DESIGN: Patients with ACLF (n=41) were compared with healthy subjects (n=25) and patients with cirrhosis (n=22) or acute liver failure (n=30)...
June 7, 2017: Gut
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