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https://www.readbyqxmd.com/read/27897392/toll-like-receptor-4-signalling-mediates-inflammation-in-skeletal-muscle-of-patients-with-chronic-kidney-disease
#1
Daniela Verzola, Alice Bonanni, Antonella Sofia, Fabrizio Montecucco, Elena D'Amato, Valeria Cademartori, Emanuele Luigi Parodi, Francesca Viazzi, Chiara Venturelli, Giuliano Brunori, Giacomo Garibotto
BACKGROUND: Inflammation in skeletal muscle is implicated in the pathogenesis of insulin resistance and cachexia but why uremia up-regulates pro-inflammatory cytokines is unknown. Toll-like receptors (TLRs) regulate locally the innate immune responses, but it is unknown whether in chronic kidney disease (CKD) TLR4 muscle signalling is altered. The aim of the study is to investigate whether in CKD muscle, TLRs had abnormal function and may be involved in transcription of pro-inflammatory cytokine...
October 18, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27836895/lifelong-quercetin-enrichment-and-cardioprotection-in-mdx-utrn-ice
#2
Christopher Ballmann, Thomas Denney, Ronald J Beyers, Tiffany S Quindry, Matthew Romero, Rajesh H Amin, Joshua T Selsby, John C Quindry
Duchenne Muscular Dystrophy (DMD) is associated with progressive cardiac pathology, however, the SIRT1/PGC1-α activator quercetin may cardioprotect dystrophic hearts. We tested the extent to which long term 0.2% dietary quercetin enrichment attenuates dystrophic cardiopathology in Mdx/Utrn(+/-) mice. At 2 months, Mdx/Utrn(+/-) mice were fed quercetin enriched (Mdx/Utrn(+/-)-Q) or control diet (Mdx/Utrn(+/-)) for 8 months. Control C57BL/10 (C57) animals were fed a control diet for 10 months. Cardiac function was quantified by MRI at 2 and 10 months...
November 11, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27835742/silencing-of-cd40-in%C3%A2-vivo-reduces-progression-of-experimental-atherogenesis-through-an-nf-%C3%AE%C2%BAb-mir-125b-axis-and-reveals-new-potential-mediators-in-the-pathogenesis-of-atherosclerosis
#3
Miguel Hueso, Laura De Ramon, Estanislao Navarro, Elia Ripoll, Josep M Cruzado, Josep M Grinyo, Joan Torras
BACKGROUND AND AIMS: CD40/CD40L signaling exerts a critical role in the development of atherosclerosis, and microRNAs (miRNAs) are key regulators in vascular inflammation and plaque formation. In this work, we investigated mRNA/miRNA expression during progression of atherosclerotic lesions through CD40 silencing. METHODS: We silenced CD40 with a specific siRNA in ApoE(-/-) mice and compared expression of mRNA/miRNA in ascending aorta with scrambled treated mice...
November 2, 2016: Atherosclerosis
https://www.readbyqxmd.com/read/27807897/polysaccharide-of-danggui-buxue-tang-an-ancient-chinese-herbal-decoction-induces-expression-of-pro-inflammatory-cytokines-possibly-via-activation-of-nf%C3%AE%C2%BAb-signaling-in-cultured-raw-264-7-cells
#4
Amy Gw Gong, Laura Ml Zhang, Candy Tw Lam, Miranda L Xu, Huai Y Wang, H Q Lin, Tina Tx Dong, Karl Wk Tsim
Danggui Buxue Tang (DBT) is an ancient Chinese herbal decoction containing two herbs, Astragali Radix (AR) and Angelicae Sinensis Radix (ASR): this herbal decoction serves as dietary supplement for women during menopause. DBT has been known to modulate immune responses, and its polysaccharide is proposed to be one of the active components. However, the polysaccharide-induced signaling in immune activation is not revealed. Here, we are identifying that the immune activation, triggered by DBT, could be mediated by polysaccharide...
November 3, 2016: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/27790149/co-micronized-palmitoylethanolamide-polydatin-treatment-causes-endometriotic-lesion-regression-in-a-rodent-model-of-surgically-induced-endometriosis
#5
Rosanna Di Paola, Roberta Fusco, Enrico Gugliandolo, Rosalia Crupi, Maurizio Evangelista, Roberta Granese, Salvatore Cuzzocrea
Endometriosis is a chronic, painful disease characterized by the presence of endometrial glands and stroma outside the uterine cavity. Palmitoylethanolamide (PEA), an endogenous fatty acid amide, has anti-inflammatory and neuroprotective effects. PEA lacks free radical scavenging activity, unlike polydatin (PLD), a natural precursor of resveratrol. The aim of this study was to investigate the effect of orally administered co-micronized PEA/polydatin [m(PEA/PLD)] in an autologous rat model of surgically induced endometriosis...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27775688/inhibition-of-nf-kappa-b-pathway-leads-to-deregulation-of-epithelial-mesenchymal-transition-and-neural-invasion-in-pancreatic-cancer
#6
Alice Nomura, Kaustav Majumder, Bhuwan Giri, Patricia Dauer, Vikas Dudeja, Sabita Roy, Sulagna Banerjee, Ashok K Saluja
NF-κB has an essential role in the initiation and progression of pancreatic cancer and specifically mediates the induction of epithelial-mesenchymal transition and invasiveness. In this study, we demonstrate the importance of activated NF-κB signaling in EMT induction, lymphovascular metastasis, and neural invasion. Modulation of NF-κB activity was accomplished through the specific NF-κB inhibitor (BAY 11-7085), triptolide, and Minnelide treatment, as well as overexpression of IKBα repressor and IKK activator plasmids...
December 2016: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/27718095/indirubin-inhibits-lps-induced-inflammation-via-tlr4-abrogation-mediated-by-the-nf-kb-and-mapk-signaling-pathways
#7
Jin-Lun Lai, Yu-Hui Liu, Chang Liu, Ming-Pu Qi, Rui-Ning Liu, Xi-Fang Zhu, Qiu-Ge Zhou, Ying-Yu Chen, Ai-Zhen Guo, Chang-Min Hu
Indirubin plays an important role in the treatment of many chronic diseases and exhibits strong anti-inflammatory activity. However, the molecular mode of action during mastitis prophylaxis remains poorly understood. In this study, a lipopolysaccharide (LPS)-induced mastitis mouse model showed that indirubin attenuated histopathological changes in the mammary gland, local tissue necrosis, and neutrophil infiltration. Moreover, indirubin significantly downregulated the production of interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α)...
October 7, 2016: Inflammation
https://www.readbyqxmd.com/read/27678372/the-novel-thiosemicarbazone-di-2-pyridylketone-4-cyclohexyl-4-methyl-3-thiosemicarbazone-dpc-inhibits-neuroblastoma-growth-in-vitro-and-in-vivo-via-multiple-mechanisms
#8
Zhu-Ling Guo, Des R Richardson, Danuta S Kalinowski, Zaklina Kovacevic, Kian Cheng Tan-Un, Godfrey Chi-Fung Chan
BACKGROUND: Neuroblastoma is a relatively common and highly belligerent childhood tumor with poor prognosis by current therapeutic approaches. A novel anti-cancer agent of the di-2-pyridylketone thiosemicarbazone series, namely di-2-pyridylketone 4,4-dimethyl-3-thiosemicarbazone (Dp44mT), demonstrates promising anti-tumor activity. Recently, a second-generation analogue, namely di-2-pyridylketone 4-cyclohexyl-4-methyl-3-thiosemicarbazone (DpC), has entered multi-center clinical trials for the treatment of advanced and resistant tumors...
September 27, 2016: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/27658615/sumoylation-of-ikb-attenuates-nf-kb-induced-nitrosative-stress-at-rostral-ventrolateral-medulla-and-cardiovascular-depression-in-experimental-brain-death
#9
Ching-Yi Tsai, Faith C H Li, Carol H Y Wu, Alice Y W Chang, Samuel H H Chan
BACKGROUND: Small ubiquitin-related modifier (SUMO) is a group of proteins that participates in post-translational modifications. One known SUMO target is the transcription factor nuclear factor-kB (NF-kB) that plays a pivotal role in many disease processes; sumoylation inactivates NF-kB by conjugation with inhibitors of NF-kB (IkB). Our laboratory demonstrated previously that transcriptional upregulation of nitric oxide synthase II (NOS II) by NF-kB, leading to nitrosative stress by the formation of peroxynitrite in the rostral ventrolateral medulla (RVLM), underpins the defunct brain stem cardiovascular regulation that precedes brain death...
2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27650497/endothelial-cell-activation-is-regulated-by-epidermal-growth-factor-like-domain-7-egfl7-during-inflammation
#10
Sébastien Pinte, Bertrand Caetano, Alexandra Le Bras, Chantal Havet, Gaëlle Villain, Racha Dernayka, Catherine Duez, Virginie Mattot, Fabrice Soncin
Activation of the blood vessel endothelium is a critical step during inflammation. Endothelial cells stimulated by pro-inflammatory cytokines play an essential part in the adhesion and extravasation of circulating leukocytes into inflamed tissues. The endothelial egfl7 gene (VE-statin) represses endothelial cell activation in tumors, and prior observations suggested that it could also participate in the regulation of endothelial cell activation during inflammation. We show here that Egfl7 expression is strongly repressed in mouse lung endothelial cells during LPS- and TNFα-induced inflammation in vivo LPS have a limited effect on Egfl7 expression by endothelial cells in vitro, whereas the pro-inflammatory cytokine TNFα strongly represses Egfl7 expression in endothelial cells...
November 11, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27631801/using-biotinylated-sumo-traps-to-analyze-sumoylated-proteins
#11
Valérie Lang, Elisa Da Silva-Ferrada, Rosa Barrio, James D Sutherland, Manuel S Rodriguez
SUMO-interacting motifs (SIMs) recognize SUMOylated proteins with high specificity allowing to connect SUMO-modified proteins. Multiple SIMs fused to distinct tags have been used to increase their affinity and generate more efficient purification tools. Enrichment of SUMOylated proteins using SIMs arranged in tandem (SUMO-traps) facilitates the identification and characterization of protein targets in vitro and in vivo. Here a protocol to produce biotinylated SUMO-traps (bioSUBEs) to capture SUMO chains and typical SUMOylated proteins such as p53 or IkBα is presented...
2016: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27619517/an-intracellular-adrenomedullin-system-reduces-il-6-release-via-a-nf-kb-mediated-camp-independent-transcriptional-mechanism-in-rat-thymic-epithelial-cells
#12
Giulia Castellani, Giovanna Paliuri, Genny Orso, Nicola Paccagnella, Claudio D'Amore, Laura Facci, Francesca Cima, Federico Caicci, Pietro Palatini, Sergio Bova, Sara De Martin
Thymic epithelial cells (TECs) play a key role in the regulation of central immune tolerance by expressing autoantigens and eliminating self-reactive T cells. In a previous paper we reported that adrenomedullin (ADM) and its co-receptor protein RAMP2 are located intracellularly in newborn human thymic epithelial cells (TECs). This work has two main aims: (1) to examine the cellular localization of ADM and its receptor in TECs of adult Wistar rats to validate this animal model for the study of the ADM system and its function(s) in thymus; (2) to investigate the potential modulating effect of ADM on the NF-kB pathway, which is involved through the production of cytokines such as IL-6, in the maturation of T-lymphocytes and immunological tolerance...
December 2016: Cytokine
https://www.readbyqxmd.com/read/27593566/tumor-derived-immuno-modulators-induce-overlapping-pro-tolerogenic-gene-expression-signatures-in-human-dendritic-cells
#13
Stefanie Trojandt, Iris Bellinghausen, Angelika B Reske-Kunz, Matthias Bros
Immature dendritic cells (iDCs) and tolerogenic DCs are essential for the induction and maintenance of peripheral tolerance. Tumors produce immuno-modulatory factors which imprint a pro-tolerogenic, maturation-resistant state in DCs. Here we asked for common markers of differentially tolerized human monocyte-derived DC populations. For this, PBMC-derived monocytes were differentiated to DCs in the presence of established immuno-modulators as released by tumors (IL-6, IL-10, TGF-β, glucocorticoid [GC], prostaglandin E2 [PGE2])...
December 2016: Human Immunology
https://www.readbyqxmd.com/read/27582262/resistance-exercise-increases-intramuscular-nf-%C3%AE%C2%BAb-signaling-in-untrained-males
#14
Jeremy R Townsend, Jeffrey R Stout, Adam R Jajtner, David D Church, Kyle S Beyer, Leonardo P Oliveira, Michael B La Monica, Joshua J Riffe, Tyler W D Muddle, Kayla M Baker, David H Fukuda, Michael D Roberts, Jay R Hoffman
PURPOSE: The NF-κB signaling pathway regulates multiple cellular processes following exercise stress. This study aims to examine the effects of an acute lower-body resistance exercise protocol and subsequent recovery on intramuscular NF-κB signaling. METHODS: Twenty-eight untrained males were assigned to either a control (CON; n = 11) or exercise group (EX; n = 17) and completed a lower-body resistance exercise protocol consisting of the back squat, leg press, and leg extension exercises...
August 31, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27581278/neougonin-a-inhibits-lipopolysaccharide-induced-inflammatory-responses-via-downregulation-of-the-nf-kb-signaling-pathway-in-raw-264-7-macrophages
#15
Lang Cao, Rongtao Li, Xuanqin Chen, Yong Xue, Dan Liu
Neougonin A is a prenylated flavonoid isolated from the whole plants of Helminthostachys zeylanica (Ophioglossaceae), which was usually used as traditional Chinese herbal medicine for the treatment of fever and inflammation. In this study, the pharmacological effects and underlying molecular mechanisms of neougonin A on lipopolysaccharide (LPS)-induced inflammatory responses were investigated. We observed that neougonin A reduced the production of inflammatory mediators (TNFα, PGE2, NO, IL-1β, and IL-6; P < 0...
December 2016: Inflammation
https://www.readbyqxmd.com/read/27572927/role-of-the-nicotinic-acetylcholine-receptor-%C3%AE-3-subtype-in-vascular-inflammation
#16
Cui Yang, Zhengtao Li, Saimei Yan, Yonghui He, Rong Dai, George Pek-Heng Leung, Shitian Pan, Jinyan Yang, Rong Yan, Guanhua Du
BACKGROUND AND PURPOSE: Vascular inflammation is a major factor contributing to the development of vascular diseases. The aim of this study was to investigate the role of the nicotinic acetylcholine receptor α3 subtype (α3-nAChR) in vascular inflammation. EXPERIMENTAL APPROACH: Vascular inflammation was studied in apolipoprotein E knockout (ApoE(-/-) ) mice fed a high-fat diet. Inflammatory markers were measured in mouse aortic endothelial cells (MAECs) and macrophages after α3-nAChRs were antagonized pharmacologically, or after the gene of α3-nAChRs was silenced...
November 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27562518/ginkgolides-and-bilobalide-protect-bv2-microglia-cells-against-ogd-reoxygenation-injury-by-inhibiting-tlr2-4-signaling-pathways
#17
Jian-Ming Zhou, Sha-Sha Gu, Wang Hong Mei, Jun Zhou, Zhen Zhong Wang, Wei Xiao
Ginkgolide and bilobalide are major trilactone constituent of Ginkgo biloba leaves and have been shown to exert powerful neuroprotective properties. The aims of this study were to observe the inhibitory effects of ginkgolide and bilobalide on the activation of microglial cells induced by oxygen-glucose deprivation and reoxygenation (OGD/R) and the specific mechanisms by which these effects are mediated. For detecting whether ginkgolide and bilobalide increased cell viability in a dose-dependent manner, BV2 cells were subjected to oxygen-glucose deprivation for 4 h followed by 3 h reoxygenation with various concentrations of drugs (6...
November 2016: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/27561301/ubiquitin-conjugating-enzyme-9-phosphorylation-as-a-novel-mechanism-for-potentiation-of-the-inflammatory-response
#18
Maria Lauda Tomasi, Komal Ramani, Minjung Ryoo
Lipopolysaccharide (LPS), a bacterial endotoxin, induces inflammation in macrophages via activation of NF-κB signaling. Sumoylation is a post-translational modification mediated by the small ubiquitin-like modifier, SUMO. Ubiquitin-conjugating enzyme 9 (UBC9) is the only known SUMO conjugating enzyme. LPS treatment lowers SUMO-1 and UBC9 mRNA levels in primary astrocytes. UBC9 can degrade NF-κB inhibitor α (Ikbα) via a SUMO2/3-ubiquitin pathway. However, UBC9 may also promote Ikbα stability by SUMO-1 conjugation that further regulates NF-κB signaling...
September 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27554921/effect-of-mrjf4-on-c6-glioma-cells-proliferation-and-migration
#19
Marcella Reale, Jole Fiorito
BACKGROUND: MRJF4, a novel haloperidol metabolite II prodrug, was obtained through the esterification of the secondary hydroxyl group of haloperidol metabolite II with 4-phenylbutyric acid. The activities of (±)-MRJF4 and its two enantiomers [(+)-MRJF4 and (-)-MRJF4] as tumor specific inducers of pro-apoptotic genes were evaluated on malignant C6 glioma cells. In particular, changes in Nf-kB signaling pathway, activity of nitric oxide synthases (NOS), metalloproteinases (MMPs), and membrane adhesion proteins were investigated...
August 23, 2016: Central Nervous System Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27495763/a20-haploinsufficiency-aggravates-transplant-arteriosclerosis-in-mouse-vascular-allografts-implications-for-clinical-transplantation
#20
Herwig P Moll, Andy Lee, Clayton R Peterson, Jesus Revuelta Cervantes, Brandon M Wojcik, Anshul Parulkar, Alessandra Mele, Philip J LoGerfo, Jeffrey J Siracuse, Eva Csizmadia, Cleide G da Silva, Christiane Ferran
BACKGROUND: Inflammation is central to the pathogenesis of transplant arteriosclerosis (TA). We questioned whether physiologic levels of anti-inflammatory A20 influence TA severity. METHODS: We performed major histocompatibility complex mismatched aorta to carotid artery interposition grafts, using wild type (WT) or A20 heterozygote (HET) C57BL/6 (H-2) donors and BALB/c (H-2) recipients, and conversely BALB/c donors and WT/HET recipients. We analyzed aortic allografts by histology, immunohistochemistry, immunofluorescence, and gene profiling (quantitative real-time reverse-transcriptase polymerase chain reaction)...
November 2016: Transplantation
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