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https://www.readbyqxmd.com/read/29663996/-establishment-and-evaluation-of-mouse-models-of-septic-myocardial-injury
#1
Liya Hu, Peijun Li, Chao Chang, Shan Liu, Yanqiu Song, Fumei Zhao, Ting Liu
OBJECTIVE: Mouse models of sepsis-induced myocardial injury by intraperitoneal injection of lipopolysaccharide (LPS) was established in order to provide a reliable method for the research of pathogenesis of sepsis-induced myocardial injury. METHODS: According to the method of random number table, a total of 150 male C57BL/6 mice were divided into five groups: NC group, sham group, and LPS 10, 12, 15 mg/kg groups, with 30 in each group. Septic myocardial injury was induced by intraperitoneal injection LPS in mice; sham group was injected with equal 0...
April 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29660395/endogenous-pgi-2-signaling-through-ip-inhibits-neutrophilic-lung-inflammation-in-lps-induced-acute-lung-injury-mice-model
#2
Shinji Toki, Weisong Zhou, Kasia Goleniewska, Sara Reiss, Daniel E Dulek, Dawn C Newcomb, William E Lawson, R Stokes Peebles
Endogenous prostaglandin I2 (PGI2 ) has inhibitory effects on immune responses against pathogens or allergens; however, the immunomodulatory activity of endogenous PGI2 signaling in endotoxin-induced inflammation is unknown. To test the hypothesis that endogenous PGI2 down-regulates endotoxin-induced lung inflammation, C57BL/6 wild type (WT) and PGI2 receptor (IP) KO mice were challenged intranasally with LPS. Urine 6-keto-PGF1α , a stable metabolite of PGI2, was significantly increased following the LPS-challenge, suggesting that endogenous PGI2 signaling modulates the host response to LPS-challenge...
April 13, 2018: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/29656318/a-novel-tetrasubstituted-imidazole-as-a-prototype-for-the-development-of-anti-inflammatory-drugs
#3
Marcus Vinicius P S Nascimento, Antonio C M Munhoz, Lais C Theindl, Eduarda Talita B Mohr, Najla Saleh, Eduardo B Parisotto, Thaís A Rossa, Ariane Zamoner, Tania B Creczynski-Pasa, Fabíola B Filippin-Monteiro, Marcus M Sá, Eduardo Monguilhott Dalmarco
Although inflammation is a biological phenomenon that exists to protect the host against infections and/or related problems, its unceasing activation results in the aggravation of several medical conditions. Imidazoles, whether natural or synthetic, are molecules related to a broad spectrum of biological effects, including anti-inflammatory properties. In this study, we screened eight novel small molecules of the imidazole class synthesized by our research group for their in vitro anti-inflammatory activity...
April 14, 2018: Inflammation
https://www.readbyqxmd.com/read/29655793/inhibition-of-nlrp9b-attenuates-acute-lung-injury-through-suppressing-inflammation-apoptosis-and-oxidative-stress-in-murine-and-cell-models
#4
Qiu Yanling, Cheng Xiaoning, Bai Fei, Fang Liyun, Hu Huizhong, Sun Daqing
Acute lung injury (ALI), known a severe disease along with high morbidity and mortality, is lacking of specific therapies. Inflammation, apoptosis and oxidative stress are critical pathologies that contribute to ALI. Recently, there is study indicated that NLRP9b, a NOD-like receptor (NLR) member, is critical in modulation of inflammatory response. However, the effects of NLRP9b on sepsis-associated ALI, and the underlying molecular mechanism have not been understood. In the present study, the wild type (WT) and NLRP9b-knockout (NLRP9b-/- ) mice with C57B/L6 background were subjected to a cecal ligation and puncture (CLP) for ALI murine model establishment...
April 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29642582/synthesis-of-a-novel-electrospun-polycaprolactone-scaffold-functionalized-with-ibuprofen-for-periodontal-regeneration-an-in-vitro-andin-vivo-study
#5
Fareeha Batool, David-Nicolas Morand, Lionel Thomas, Isaac Maximiliano Bugueno, Javier Aragon, Silvia Irusta, Laetitia Keller, Nadia Benkirane-Jessel, Henri Tenenbaum, Olivier Huck
Ibuprofen (IBU) has been shown to improve periodontal treatment outcomes. The aim of this study was to develop a new anti-inflammatory scaffold by functionalizing an electrospun nanofibrous poly-ε-caprolactone membrane with IBU (IBU-PCL) and to evaluate its impact on periodontal inflammation, wound healing and regeneration in vitro and in vivo. IBU-PCL was synthesized through electrospinning. The effects of IBU-PCL on the proliferation and migration of epithelial cells (EC) and fibroblasts (FB) exposed to Porphyromonas gingivlais lipopolysaccharide (Pg -LPS) were evaluated through the AlamarBlue test and scratch assay, respectively...
April 10, 2018: Materials
https://www.readbyqxmd.com/read/29623965/monitoring-the-chemical-and-electronic-properties-of-electrolyte-electrode-interfaces-in-all-solid-state-batteries-using-operando-x-ray-photoelectron-spectroscopy
#6
Xiaohan Wu, Claire Villevieille, Petr Novák, Mario El Kazzi
Understanding the degradation of the solid electrolyte-electrodes interface during cycling is currently one of the most challenging obstacles in the development of all-solid-state batteries. Here, we introduce operando X-ray photoelectron spectroscopy (XPS) as a combined approach for real-time monitoring of the (i) (electro-) chemical interfacial reactions between different components of the composites electrode and (ii) surface electronic properties. The dedicated electrochemical cell, capable of maintaining high mechanical pressure, offers reliable electrochemistry and versatility in terms of materials application...
April 6, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29618826/a-systems-pharmacology-oriented-discovery-of-a-new-therapeutic-use-of-the-tcm-formula-liuweiwuling-for-liver-failure
#7
Jia-Bo Wang, He-Rong Cui, Rui-Lin Wang, Cong-En Zhang, Ming Niu, Zhao-Fang Bai, Gen-Hua Xu, Peng-Yan Li, Wen-Yan Jiang, Jing-Jing Han, Xiao Ma, Guang-Ming Cai, Rui-Sheng Li, Li-Ping Zhang, Xiao-He Xiao
Multiple components of traditional Chinese medicine (TCM) formulae determine their treatment targets for multiple diseases as opposed to a particular disease. However, discovering the unexplored therapeutic potential of a TCM formula remains challenging and costly. Inspired by the drug repositioning methodology, we propose an integrated strategy to feasibly identify new therapeutic uses for a formula composed of six herbs, Liuweiwuling. First, we developed a comprehensive systems approach to enrich drug compound-liver disease networks to analyse the major predicted diseases of Liuweiwuling and discover its potential effect on liver failure...
April 4, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29610822/polydopamine-nanoparticles-for-the-treatment-of-acute-inflammation-induced-injury
#8
He Zhao, Zhandong Zeng, Lin Liu, Jiawen Chen, Huiting Zhou, Lili Huang, Jie Huang, Hua Xu, Yunyun Xu, Zhengrong Chen, Yi Wu, Wanliang Guo, Jiang Huai Wang, Jian Wang, Zhuang Liu
Nanotechnology-mediated anti-inflammatory therapy is emerging as a novel strategy for the treatment of inflammation-induced injury. However, one of the main hurdles for these anti-inflammatory nano-drugs is their potential toxic side effects in vivo. Herein, we uncovered that polydopamine (PDA) nanoparticles with their structure and chemical properties similar to melanin, a natural bio-polymer, displayed a significant anti-inflammation therapeutic effect on acute inflammation-induced injury. PDA with enriched phenol groups functioned as a radical scavenger to eliminate reactive oxygen species (ROS) generated during inflammatory responses...
April 3, 2018: Nanoscale
https://www.readbyqxmd.com/read/29601102/frontline-science-specialized-proresolving-lipid-mediators-inhibit-the-priming-and-activation-of-the-macrophage-nlrp3-inflammasome
#9
Aritz Lopategi, Roger Flores-Costa, Bibiana Rius, Cristina López-Vicario, José Alcaraz-Quiles, Esther Titos, Joan Clària
The prototypic proinflammatory cytokine IL-1β plays a central role in innate immunity and inflammatory disorders. The formation of mature IL-1β from an inactive pro-IL-1β precursor is produced via nonconventional multiprotein complexes called the inflammasomes, of which the most common is the nucleotide-binding domain leucine-rich repeat-containing protein 3 (NLRP3) inflammasome composed by NLRP3, (ASC) apoptosis-associated speck-like protein containing a caspase activation and recruitment domain (CARD), and caspase-1...
March 30, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29600284/assembly-biochemical-characterization-immunogenicity-adjuvanticity-and-efficacy-of-shigella-artificial-invaplex
#10
K Ross Turbyfill, Kristen A Clarkson, Anthony R Vortherms, Edwin V Oaks, Robert W Kaminski
The native Invaplex (InvaplexNAT ) vaccine and adjuvant is an ion exchange-purified product derived from the water extract of virulent Shigella species. The key component of InvaplexNAT is a high-molecular-mass complex (HMMC) consisting of the Shigella lipopolysaccharide (LPS) and the invasin proteins IpaB and IpaC. To improve product purity and immunogenicity, artificial Invaplex (InvaplexAR ) was developed using recombinant IpaB and IpaC proteins and purified Shigella LPS to assemble an HMMC consisting of all three components...
March 2018: MSphere
https://www.readbyqxmd.com/read/29579979/cheese-matrix-protects-the-immunomodulatory-surface-protein-slpb-of-propionibacterium-freudenreichii-during-in-vitro-digestion
#11
Houem Rabah, Olivia Ménard, Floriane Gaucher, Fillipe Luiz Rosa do Carmo, Didier Dupont, Gwénaël Jan
Propionibacterium freudenreichii is a traditional Swiss-type cheeses starter and constitutes an emergent probiotic, exerting several beneficial effects, including anti-inflammatory modulation of gut inflammation. This feature relies on several metabolites and on surface proteins, with a prominent role of the surface protein SlpB. In this study, we firstly investigated the relevance to avoid SlpB digestive proteolysis, by comparing the effect of i) P. freudenreichii CIRM-BIA 129, ii) its native Slps, or iii) peptides resulting from Slps digestive proteolysis, with respect to modulation of HT-29 cells response to a lipopolysaccharide (LPS) challenge...
April 2018: Food Research International
https://www.readbyqxmd.com/read/29568797/effects-of-consumption-of-whole-grape-powder-on-basal-nf-%C3%AE%C2%BAb-signaling-and-inflammatory-cytokine-secretion-in-a-mouse-model-of-inflammation
#12
Sonni-Ali Miller, Jason A White, Rupak Chowdhury, Dominique N Gales, Berhanu Tameru, Amit K Tiwari, Temesgen Samuel
Dietary consumption of polyphenol-rich fruits, such as grapes, may reduce inflammation and potentially prevent diseases linked to inflammation. Here, we used a genetically engineered murine model to measure Nuclear Factor kappa-light-chain-enhancer of activated B cells (NF-κB) activity and pro-inflammatory cytokine secretion to test the hypothesis that oral consumption of whole grape formulation reduces inflammatory signaling in the body. NF-κB luciferase reporter mice were divided into two groups, one which was fed an experimental diet formulated with 4% (w/w) whole grape powder (WGP) or another which was fed a control diet formulated with 3...
March 2018: Journal of Nutrition & Intermediary Metabolism
https://www.readbyqxmd.com/read/29568200/-nod2-and-disease-specific-gene-expression-profiles-of-peripheral-blood-mononuclear-cells-from-crohn-s-disease-patients
#13
Holger Schäffler, Maria Rohde, Sarah Rohde, Astrid Huth, Nicole Gittel, Hannes Hollborn, Dirk Koczan, Änne Glass, Georg Lamprecht, Robert Jaster
AIM: To investigate disease-specific gene expression profiles of peripheral blood mononuclear cells (PBMCs) from Crohn's disease (CD) patients in clinical remission. METHODS: Patients with CD in clinical remission or with very low disease activity according to the Crohn's disease activity index were genotyped regarding nucleotide-binding oligomerization domain 2 ( NOD2 ), and PBMCs from wild-type (WT)- NOD2 patients, patients with homozygous or heterozygous NOD2 mutations and healthy donors were isolated for further analysis...
March 21, 2018: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29545859/therapeutic-effects-of-hedyotis-diffusa-willd-in-a-copd-mouse-model-challenged-with-lps-and-smoke
#14
Renping Liu, Peihong Wang, Caiqing Wu, Juan Chen, Chengxin Li, Yongtao Xie, Qi Wang, Jianming Liu, Huan He, Jing Zhu
Hedyotis diffusa Willd (HDW) is a constituent of several Chinese medicines used clinically to treat inflammatory diseases, including airway inflammation. The aim of the present study was to investigate whether HDW serves a protective role in suppressing chronic airway inflammation and its underlying mechanisms. A mouse model of chronic smoking was induced via exposure to cigarette smoke (CS) for 30 days, increasing the exposure time for up to 5 min per day and the administration of lipopolysaccharide (LPS)...
April 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29541077/differential-role-of-cathepsins-s-and-b-in-hepatic-apc-mediated-nkt-cell-activation-and-cytokine-secretion
#15
Álvaro de Mingo Pulido, Estefanía de Gregorio, Shilpi Chandra, Anna Colell, Albert Morales, Mitchell Kronenberg, Montserrat Marí
Natural killer T (NKT) cells exhibit a specific tissue distribution, displaying the liver the highest NKT/conventional T cell ratio. Upon antigen stimulation, NKT cells secrete Th1 cytokines, including interferon γ (IFNγ), and Th2 cytokines, including IL-4 that recruit and activate other innate immune cells to exacerbate inflammatory responses in the liver. Cysteine cathepsins control hepatic inflammation by regulating κB-dependent gene expression. However, the contribution of cysteine cathepsins other than Cathepsin S to NKT cell activation has remained largely unexplored...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29530548/chinese-mitten-crab-eriocheir-sinensis-iron-sulphur-cluster-assembly-protein-2-esisca2-is-differentially-regulated-after-immune-and-oxidative-stress-challenges
#16
Peng Zhang, Yu Liu, Min Wang, Miren Dong, Zhaoqun Liu, Zhihao Jia, Weilin Wang, Anguo Zhang, Lingling Wang, Linsheng Song
Iron-sulphur clusters (ISCs), one of the oldest and most versatile cofactors of proteins, are involved in catalysis reactions, electron transport reactions, regulation processes as well as sensing of ambient conditions. Iron-sulphur cluster assembly protein (IscA) is a scaffold protein member of ISC formation system, which plays a significant role in the assembly and maturation process of ISC proteins. In the present study, the cDNA sequence of iron-sulphur cluster assembly protein 2 (designated as EsIscA2) was cloned from Eriocheir sinensis...
March 9, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29519277/-effects-of-heme-oxygenase-1-carbon-monoxide-pathway-on-the-mitochondrial-fusion-in-rat-alveolar-epithelial-type-ii-cells-stimulated-by-lipopolysaccharide
#17
Haojuan Jia, Jia Shi, Shu'an Dong, Yuan Zhang, Jianbo Yu
OBJECTIVE: To investigate the effects of heme oxygenase-1/carbon monoxide (HO-1/CO) pathway on mitochondrial fusion in rat alveolar epithelial type II cells (AEC II) stimulated by lipopolysaccharide (LPS). METHODS: Once the cultured in vitro rat AEC II cells line RLE-6TN reached confluency of 85%, they were subcultured and randomly divided into seven groups (n = 5 each). RLE-6TN cells were routinely cultured in control group. The cells in LPS group was stimulated with 10 mg/L LPS to reproduce the model of endotoxin challenge in AECII cells...
March 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29515583/k63-linked-polyubiquitination-on-traf6-regulates-lps-mediated-mapk-activation-cytokine-production-and-bacterial-clearance-in-toll-like-receptor-7-8-primed-murine-macrophages
#18
Jaya Talreja, Lobelia Samavati
Post viral infection bacterial pneumonia is a major cause of morbidity and mortality associated with both seasonal and pandemic influenza virus illness. Despite much efforts put into the discovery of mechanisms of post viral-bacterial infections and their complications in recent years, the molecular mechanisms underlying the increased susceptibility to bacterial infection remain poorly understood. In this study, we focused on the pathways regulating immune responses in murine macrophages and modeled post viral-bacterial infections through pretreatment of bone marrow-derived macrophages (BMDMs) with a toll-like receptor (TLR) 7/8 ligand (R848) and subsequent challenge with TLR2/4 agonists to mimic bacterial infection...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29510469/flaxseed-oil-attenuates-intestinal-damage-and-inflammation-by-regulating-necroptosis-and-tlr4-nod-signaling-pathways-following-lipopolysaccharide-challenge-in-a-piglet-model
#19
Huiling Zhu, Haibo Wang, Shuhui Wang, Zhixiao Tu, Lin Zhang, Xiuying Wang, Yongqing Hou, Chunwei Wang, Jie Chen, Yulan Liu
SCOPE: Flaxseed oil is a rich source of α-linolenic acid (ALA), which is the precursor of the long-chain n-3 polyunsaturated fatty acids (PUFAs) including docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). This study investigated the protective effect of flaxseed oil against intestinal injury induced by lipopolysaccharide (LPS). MATERIALS AND RESULTS: Twenty-four weaned pigs were used in a 2 × 2 factorial experiment with dietary treatment (5% corn oil vs...
March 6, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29500815/role-of-g-protein-coupled-receptor-kinase-2-in-oxidative-and-nitrosative-stress-related-neurohistopathological-changes-in-a-mouse-model-of-sepsis-associated-encephalopathy
#20
Masaaki Kawakami, Mizuki Hattori, Wakana Ohashi, Toshio Fujimori, Kohshi Hattori, Mariko Takebe, Kengo Tomita, Hiroki Yokoo, Naoyuki Matsuda, Mitsuaki Yamazaki, Yuichi Hattori
Sepsis-associated encephalopathy (SAE), characterized as diffuse brain dysfunction and neurological manifestations secondary to sepsis, is a common complication in critically ill patients and can give rise to poor outcome, but understanding the molecular basis of this disorder remains a major challenge. Given the emerging role of G protein-coupled receptor 2 (GRK2), first identified as a G protein-coupled receptor (GPCR) regulator, in the regulation of non-GPCR-related molecules contributing to diverse cellular functions and pathology, including inflammation, we tested the hypothesis that GRK2 may be linked to the neuropathogenesis of SAE...
March 3, 2018: Journal of Neurochemistry
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