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https://www.readbyqxmd.com/read/28635072/plgf-enhances-tlr-dependent-inflammatory-responses-in-human-mononuclear-phagocytes
#1
Laura F Newell, Shernan G Holtan, Jane E Yates, Leonardo Pereira, Jeffrey W Tyner, Irina Burd, Grover C Bagby
PROBLEM: Levels of placental growth factor (PlGF) peak during third trimester of pregnancy, a time when women are at increased risk of virus-induced morbidity. We hypothesized PlGF might contribute to an exaggerated inflammatory response to Toll-like receptor (TLR) activation. METHOD OF STUDY: Primary human adult and cord blood CD14(+) cells were cultured in the presence of TLR ligands and/or PlGF. RESULTS: PlGF significantly enhanced the magnitude and duration of TNF messenger RNA and protein production by TLR-7/8-activated monocytes, and increased subsequent production of TNF-independent inflammatory cytokines...
June 20, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28629622/optical-coherence-tomography-compared-with-fractional-flow-reserve-guided-approach-in-acute-coronary-syndromes-a-propensity-matched-analysis
#2
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
#3
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
#4
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/28625598/predictors-of-long-term-outcomes-after-drug-eluting-balloon-angioplasty-for-bare-metal-stent-restenosis
#5
Ming-Jer Hsieh, Yu-Chang Huang, Jih-Kai Yeh, Chun-Chi Chen, Dong-Yi Chen, Chia-Hung Yang, Ming-Lung Tsai, Ming-Yun Ho, Shang-Hung Chang, Chao-Yung Wang, Cheng-Hung Lee, I-Chang Hsieh
BACKGROUND: Clinical trials have investigated efficacy of drug-eluting balloon (DEB) angioplasty for bare-metal stent (BMS) in-stent restenosis (ISR). Few studies have investigated predictors of long-term outcomes following BMS-ISR treatment with DEB. METHODS: From June 2011 to April 2015, 105 patients with 125 BMS-ISR lesions were enrolled from the Cardiovascular Atherosclerosis and Percutaneous TrAnsluminal INterventions (CAPTAIN) registry. All these lesions were treated with DEB angioplasty as final therapy...
May 24, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28620298/anti-tumor-activity-of-toll-like-receptor-7-agonists
#6
REVIEW
Huju Chi, Chunman Li, Flora Sha Zhao, Li Zhang, Tzi Bun Ng, Guangyi Jin, Ou Sha
Toll-like receptors (TLRs) are a class of pattern recognition receptors that play a bridging role in innate immunity and adaptive immunity. The activated TLRs not only induce inflammatory responses, but also elicit the development of antigen specific immunity. TLR7, a member of TLR family, is an intracellular receptor expressed on the membrane of endosomes. TLR7 can be triggered not only by ssRNA during viral infections, but also by immune modifiers that share a similar structure to nucleosides. Its powerful immune stimulatory action can be potentially used in the anti-tumor therapy...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28609762/increased-toll-like-receptor-myeloid-differentiation-factor-88-expression-at-the-maternal-fetal-interface-is-associated-with-spontaneous-abortion
#7
Mengzhou He, Yuan Zhou, Min Jiang, Fanfan Li, Meitao Yang, Yao Fan, Dongrui Deng
AIMS: Toll-like receptors (TLRs) form a group of pattern recognition receptors that play a major role in maintaining innate host immunity. Myeloid differentiation factor 88 (MyD88) is an adaptor molecule that is essential for signaling via the TLR family. To analyze the mechanism of the imbalance in the innate immune system mediated by TLRs-MyD88 in spontaneous abortion, we detected the expression of TLR-2, TLR-4, TLR-7, and MyD88 in placentae and deciduas. METHODS: The expression of TLR-2, TLR-4, TLR-7, and MyD88 in the placentae and deciduas of abortion-prone mice (n = 10) and normal pregnant mice (n = 10) were analyzed by immunochemistry, western blot, and real-time polymerase chain reaction...
June 14, 2017: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/28607148/autophagy-downstream-of-endosomal-toll-like-receptors-signaling-in-macrophages-is-a-key-mechanism-for-resistance-to-leishmania-major-infection
#8
Luis H Franco, Anna K A Fleuri, Nat Aacutelia C Pellison, Gustavo F S Quirino, Catarina V Horta, Renan V H de Carvalho, Sérgio C Oliveira, Dario S Zamboni
Leishmaniasis is caused by protozoan parasites of the genus Leishmania. In mammalians, these parasites survive and replicate in macrophages and parasite elimination by macrophages is critical for host resistance. Endosomal Toll-like receptors (TLRs) have been shown to be crucial for resistance to L. major in vivo. For example, mice in the resistant C57BL/6 genetic background that are triple-deficient for TLR3, -7 and -9 (Tlr3/7/9-/-) are highly susceptible to L. major infection. Tlr3/7/9-/- mice are as susceptible as mice deficient in MyD88 or UNC93B1, a chaperone required for appropriate localization of endosomal TLRs, but the mechanisms are unknown...
June 12, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28601430/imiquimod-induced-autophagy-is-regulated-by-er-stress-mediated-pkr-activation-in-cancer-cells
#9
Shu-Hao Chang, Shi-Wei Huang, Sin-Ting Wang, Kai-Cheng Chung, Chia-Wei Hsieh, Jun-Kai Kao, Yi-Ju Chen, Chun-Ying Wu, Jeng-Jer Shieh
BACKGROUND: Autophagy is a highly conserved cellular catabolic pathway for degradation and recycling of intracellular components in response to nutrient starvation or environmental stress. Endoplasmic reticulum (ER) homeostasis can be disturbed by physiological and pathological influences, resulting in accumulation of misfolded and unfolded proteins in the ER lumen, a condition referred to as ER stress. Imiquimod (IMQ), a Toll-like receptor (TLR) 7 ligand, possesses anti-tumor and anti-viral activities in vitro and in vivo...
May 2, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28599094/rational-design-of-peptide-derivatives-for-inhibition-of-myd88-mediated-tlr-signaling-in-human-pbmcs-and-epithelial-cells-exposed-to-f-tularensis
#10
D A Ryan, M Degardin, S Alam, T L Kissner, M Hale, M D Cameron, M Rebek, D Ajami, K U Saikh, J Rebek
Small molecules were developed to attenuate proinflammatory cytokines resulting from activation of MyD88-mediated TLR signaling by F. tularensis. Fifty-three tripeptide derivatives were synthesized to mimic a key BB-loop region involved in toll-like/interleukin-1 receptor recognition (TIR) domain interactions. Compounds were tested for inhibition of TNF-α, IFN-γ, IL-6, and IL-1β in human peripheral blood mononuclear cells (PBMCs) and primary human bronchial epithelial cells exposed to LPS extracts from F...
June 9, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28593786/characterization-of-liver-changes-in-zsf1-rats-an-animal-model-of-metabolic-syndrome
#11
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/28593434/pam2csk4-and-pam3csk4-induce-inos-expression-via-tbk1-and-myd88-molecules-in-mouse-macrophage-cell-line-raw264-7
#12
Panthong Kulsantiwong, Matsayapan Pudla, Chanya Srisaowakarn, Jitrada Boondit, Pongsak Utaisincharoen
OBJECTIVE: The aim of this study was to investigate the involvement of TLR adaptor molecules, such as TRIF, MyD88, and TBK1 in the induction of iNOS and nitric oxide (NO) production in Pam2CSK4 and Pam3CSK4-treated mouse macrophages. METHOD: Mouse macrophage cell line (RAW264.7) was transfected with trif, myd88, and tbk1 siRNAs before stimulated with Pam2CSK4 and Pam3CSK4. The iNOS gene and protein expression were determined by RT-PCR and immunoblotting, respectively...
June 7, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28592648/allelic-variation-in-the-toll-like-receptor-adaptor-protein-ticam2-contributes-to-sars-coronavirus-pathogenesis-in-mice
#13
Lisa E Gralinski, Vineet D Menachery, Andrew P Morgan, Allison L Totura, Anne Beall, Jacob Kocher, Jessica Plante, D Corinne Harrison-Shostak, Alexandra Schäfer, Fernando Pardo-Manuel de Villena, Martin T Ferris, Ralph S Baric
Host genetic variation is known to contribute to differential pathogenesis following infection. Mouse models allow direct assessment of host genetic factors responsible for susceptibility to Severe Acute Respiratory Syndrome coronavirus (SARS-CoV). Based on an assessment of early stage lines from the Collaborative Cross mouse multi-parent population, we identified two lines showing highly divergent susceptibilities to SARS-CoV: the resistant CC003/Unc and the susceptible CC053/Unc. We generated 264 F2 mice between these strains, and infected them with SARS-CoV...
June 7, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28591543/influence-of-polyphenol-rich-diet-on-exercise-induced-immunomodulation-in-male-endurance-athletes
#14
Korbinian Lackermair, Johannes Scherr, Georg Waidhauser, Heiko Methe, Eva Hoster, David C Nieman, Alan Hanley, Sebastian Clauss, Martin Halle, Thomas Nickel
<u>Introduction:</u> Stress is associated with increased susceptibility to infection. We investigated if the mechanism involves immunomodulation of dendritic cells and whether this can be inhibited by a polyphenol-rich diet. <u>Methods:</u> Blood samples were taken from a total of 100 male endurance athletes at five time points around a marathon run: four weeks before, during one week before, and immediately, 24hours and 72hours after. Participants were randomized into two double blinded groups...
June 7, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28580131/recent-insights-into-the-implications-of-metabolism-in-plasmacytoid-dendritic-cell-innate-functions-potential-ways-to-control-these-functions
#15
REVIEW
Philippe Saas, Alexis Varin, Sylvain Perruche, Adam Ceroi
There are more and more data concerning the role of cellular metabolism in innate immune cells, such as macrophages or conventional dendritic cells. However, few data are available currently concerning plasmacytoid dendritic cells (PDC), another type of innate immune cells. These cells are the main type I interferon (IFN) producing cells, but they also secrete other pro-inflammatory cytokines (e.g., tumor necrosis factor or interleukin [IL]-6) or immunomodulatory factors (e.g., IL-10 or transforming growth factor-β)...
2017: F1000Research
https://www.readbyqxmd.com/read/28579168/drug-coated-versus-bare-metal-stents-for-elderly-patients-a-predefined-sub-study-of-the-leaders-free-trial
#16
Marie-Claude Morice, Suneel Talwar, Oliver Gaemperli, Gert Richardt, Franz Eberli, Ian Meredith, Azfar Zaman, Jean Fajadet, Samuel Copt, Samantha Greene, Philip Urban
BACKGROUND: The randomized, LEADERS FREE trial showed superior safety and efficacy of a polymer-free DCS vs. a bare metal stent in high-bleeding risk patients with only one month dual antiplatelet treatment. We report characteristics and outcomes of the pre-specified group of elderly patients (aged ≥75). METHODS: Age >75 was one of the trial's inclusion criteria. The main additional criteria were: need for oral anticoagulants, recent bleeding, anemia, chronic renal failure and cancer...
April 25, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28572564/plasmacytoid-dendritic-cells-appear-inactive-during-sub-microscopic-plasmodium-falciparum-blood-stage-infection-yet-retain-their-ability-to-respond-to-tlr-stimulation
#17
Jessica R Loughland, Gabriela Minigo, Derek S Sarovich, Matt Field, Peta E Tipping, Marcela Montes de Oca, Kim A Piera, Fiona H Amante, Bridget E Barber, Matthew J Grigg, Timothy William, Michael F Good, Denise L Doolan, Christian R Engwerda, Nicholas M Anstey, James S McCarthy, Tonia Woodberry
Plasmacytoid dendritic cells (pDC) are activators of innate and adaptive immune responses that express HLA-DR, toll-like receptor (TLR) 7, TLR9 and produce type I interferons. The role of human pDC in malaria remains poorly characterised. pDC activation and cytokine production were assessed in 59 malaria-naive volunteers during experimental infection with 150 or 1,800 P. falciparum-parasitized red blood cells. Using RNA sequencing, longitudinal changes in pDC gene expression were examined in five adults before and at peak-infection...
June 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28571545/potential-medications-or-compounds-acting-on-toll-like-receptors-in-cerebral-ischemia
#18
Man Li, Jing Liu, Ying Bi, Jixiang Chen, Lei Zhao
Toll-like receptors have been suggested to play an integral role in the process of inflammatory response after ischemic injury. Of all 9 TLRs presenting in brain, functions of TLR2, TLR3, TLR4, TLR7, TLR8 and TLR9 have been studied in recent years. The MyD88 pathway and TIR domain-containing adaptor inducing interferon pathway are involved in these pathophysiological changes. Since the important role, the therapeutic potential of strategies acting on TLRs should be evaluated. Feasible approaches may function in the following respects, methods acting on TLRs directly, modulations of MyD88 or TRIF signaling pathway, and the ischemic tolerance induced by the preconditioning or postconditioning with TLR ligands or minor cerebral ischemia...
June 1, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28570235/five-year-freedom-from-target-lesion-revascularization-using-excimer-laser-ablation-therapy-in-the-treatment-of-in-stent-restenosis-of-femoropopliteal-arteries
#19
Nicolas W Shammas, Gail A Shammas, Lorraine Arikat, Andrew N Shammas, Alec Darrow, Avantika Banerjee, Benjamin Rudy
BACKGROUND: Target-lesion revascularization (TLR) and loss of patency remain high following treatment of in-stent restenosis (ISR) of the femoropopliteal (FP) artery. Excimer laser atherectomy (ELA) is effective in reducing TLR and improves patency at 6-month and 1-year follow-up when compared with balloon angioplasty (PTA). The long-term sustainability of these early results is unknown. We present a retrospective analysis from our center on the 5-year outcomes of ELA in the treatment of ISR of the FP arteries...
June 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28560427/araliasaponin-ii-isolated-from-leaves-of-acanthopanax%C3%A2-henryi-oliv-harms-inhibits-inflammation-by-modulating-the-expression-of-inflammatory-markers-in-murine-macrophages
#20
Yun-Soo Seo, Seok-Jeon Lee, Zhi Li, Ok-Hwa Kang, Ryong Kong, Sang-A Kim, Tian Zhou, Yung-Sun Song, Xiangqian Liu, Dong-Yeul Kwon
Araliasaponin II (AS II) is a bioactive compound isolated from Acanthopanax henryi (Oliv.) Harms, a plant widely used in traditional oriental medicine. The present study investigated the anti‑inflammatory effects of AS II using murine macrophages. The effects of AS II on inflammatory mediator and cytokine production in lipopolysaccharide (LPS)‑stimulated RAW 264.7 cells was evaluated. Nitric oxide (NO) and cytokine production were determined using the Griess reagent and an ELISA kit. The expression levels of cytokines, inducible NO synthase (iNOS) and cyclooxygenase‑2 (COX‑2) mRNA were examined by reverse transcription‑quantitative polymerase chain reaction...
July 2017: Molecular Medicine Reports
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