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https://www.readbyqxmd.com/read/28324760/trpv1-agonism-inhibits-endothelial-cell-inflammation-via-activation-of-enos-no-pathway
#1
Youping Wang, Lin Cui, Hui Xu, Suxiao Liu, Feiyun Zhu, Fengna Yan, Si Shen, Mingjun Zhu
BACKGROUND AND AIMS: Transient receptor potential vanilloid type 1 channel (TRPV1) is found to be expressed in endothelial cells (ECs) and activate endothelial nitric oxide synthase (eNOS). Recent studies implicate TRPV1 in attenuating inflammatory responses. However, the mechanisms underlying the beneficial effects remain unclear. In this study, we investigated whether TRPV1 suppresses inflammatory responses of ECs via eNOS/NO pathway. METHODS: Human umbilical vein endothelial cells (HUVECs) and renal microvascular endothelial cells (MVECs) isolated from deoxycorticosterone (DOCA)-salt hypertensive mice were cultured in the presence of capsaicin (CAP, a specific TRPV1 agonist) with or without the specific inhibitor of TRPV1, NOS, or Ca(2+)-dependent phosphatidylinositol 3-kinase (PI3K)/Akt pathway, before lipopolysaccharide (LPS) stimulation...
March 10, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28324666/gene-expression-analysis-to-assess-the-relevance-of-rodent-models-to-human-lung-injury
#2
Timothy E Sweeney, Shane Lofgren, Purvesh Khatri, Angela J Rogers
Rationale The relevance of animal models to human diseases is an area of intense scientific debate. The degree to which mouse models of lung injury recapitulate human lung injury has never been assessed. Integrating data from both human and animal expression studies allows for increased statistical power and identification of conserved differential gene expression across organisms and conditions. Objectives Comprehensive integration of gene expression data in experimental ALI in rodents compared to humans. Methods We performed two separate gene expression multi-cohort analyses to determine differential gene expression in experimental animal and human lung injury...
March 21, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28324642/cinnamon-reduces-inflammatory-response-in-intestinal-fibroblasts-in-vitro-and-in-colitis-in-vivo-leading-to-decreased-fibrosis
#3
Yvonne Hagenlocher, Sabrina Satzinger, Mehtap Civelek, Katharina Feilhauer, Jörg Köninger, Stephan C Bischoff, Axel Lorentz
Intestinal fibrosis, a complication of inflammatory bowel disease, is currently being addressed by surgery alone, with no adequate alternative therapy available for patients. We propose that anti-inflammatory plant substances like cinnamon extract (CE) or its main compound cinnamaldeyde (CA) could aid in therapy. We recently found CE reducing inflammation in murine colitis. Here, we analysed effects of CE on fibrosis in IL-10(-/-) colitis METHODS AND RESULTS: IL-10(-/-) and wild type (wt) mice were orally treated with/without vehicle or CE...
March 21, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28324010/separating-the-anti-inflammatory-and-diabetogenic-effects-of-glucocorticoids-through-lxr%C3%AE-antagonism
#4
Rucha Patel, Lilia Magomedova, Ricky Tsai, Stéphane Angers, Arturo Orellana, Carolyn L Cummins
Synthetic glucocorticoids (GCs) including dexamethasone (DEX) are powerful anti-inflammatory drugs. Long-term use of GCs, however, can result in metabolic side effects such as hyperglycemia, hepatosteatosis, and insulin resistance. The glucocorticoid receptor (GR) and liver X receptors (LXRα and LXRβ) regulate overlapping genes involved in gluconeogenesis and inflammation. We have previously shown that Lxrβ-/- mice are resistant to the diabetogenic effects of DEX, but still sensitive to its immunosuppressive actions...
January 27, 2017: Endocrinology
https://www.readbyqxmd.com/read/28320098/inhibition-of-tissue-transglutaminase-attenuates-lipopolysaccharide-induced-inflammation-in-glial-cells-through-akt-mtor-signal-pathway
#5
Yirong Ding, Ji Zhang, Rui Wang
AIM: In view of the facts that tTG protein expression level and its enzyme activity increase in AD brains of both individuals and transgenic animals and compelling evidence of the involvement of inflammation in AD pathogenesis, tTG could be involved in the inflammation responses in the brain. In the present study, we examined the effects of the irreversible and the competitive inhibitor of tTG on the condition of lipopolysaccharide-induced mimic inflammation models in glial cells. METHODS: Western blot and tTG enzyme activity assay were applied to detect tTG and isopeptide protein levels and tTG enzyme activity...
March 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28319894/resolvin-d1-via-prevention-of-ros-mediated-shp2-inactivation-protects-endothelial-adherens-junction-integrity-and-barrier-function
#6
Rima Chattopadhyay, Somasundaram Raghavan, Gadiparthi N Rao
Resolvins are a novel class of lipid mediators that play an important role in the resolution of inflammation, although the underlying mechanisms are not very clear. To explore the anti-inflammatory mechanisms of resolvins, we have studied the effects of resolvin D1 (RvD1) on lipopolysaccharide (LPS)-induced endothelial barrier disruption as it is linked to propagation of inflammation. We found that LPS induces endothelial cell (EC) barrier disruption via xanthine oxidase (XO)-mediated reactive oxygen species (ROS) production, protein tyrosine phosphatase SHP2 inactivation and Fyn-related kinase (Frk) activation leading to tyrosine phosphorylation of α-catenin and VE-cadherin and their dissociation from each other affecting adherens junction (AJ) integrity and thereby increasing endothelial barrier permeability...
March 6, 2017: Redox Biology
https://www.readbyqxmd.com/read/28319310/cxcl4-is-a-novel-nickel-binding-protein-and-augments-nickel-allergy
#7
Toshinobu Kuroishi, Kanan Bando, Yukinori Tanaka, Kaori Shishido, Masayuki Kinbara, Tomohisa Ogawa, Koji Muramoto, Yasuo Endo, Shunji Sugawara
BACKGROUND: Nickel (Ni) is the most frequent metal allergen and induces a TH1 -dependent type-IV allergy. Although Ni(2+) is considered to bind to endogenous proteins, it currently remains unclear whether these Ni-binding proteins are involved in Ni allergy in vivo. We previously reported the adjuvant effects of lipopolysaccharide (LPS) in a Ni allergy mouse model. Since LPS induces a number of inflammatory mediators, we hypothesized that Ni-binding protein(s) are also induced by LPS...
March 20, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28318590/supplementation-with-rumen-protected-methionine-or-choline-during-the-transition-period-influences-whole-blood-immune-response-in-periparturient-dairy-cows
#8
M Vailati-Riboni, Z Zhou, C B Jacometo, A Minuti, E Trevisi, D N Luchini, J J Loor
Methionine, together with Lys, is the most limiting AA for milk production in dairy cows. Besides its crucial role in milk production, Met and its derivate metabolites (e.g., glutathione, taurine, polyamines) are well-known immunonutrients in nonruminants, helping support and boost immune function and activity. In the present study, the effects of Met or choline, as its precursor, were investigated using an ex vivo whole blood challenge. The study involved 33 multiparous Holstein cows (from a larger cohort with a factorial arrangement of treatments) assigned from d -21 to +30 relative to parturition to a basal control (CON) diet, CON plus rumen-protected Met (MET, Smartamine M, Adisseo NA, Alpharetta, GA) at a rate of 0...
March 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28317862/biological-activity-of-masked-endotoxin
#9
Harald Schwarz, Jan Gornicec, Theresa Neuper, Maria Alejandra Parigiani, Michael Wallner, Albert Duschl, Jutta Horejs-Hoeck
Low endotoxin recovery (LER) is a recently discovered phenomenon describing the inability of limulus amebocyte lysate (LAL)-based assays to detect lipopolysaccharide (LPS) because of a "masking effect" caused by chelators or detergents commonly used in buffer formulations for medical products and recombinant proteins. This study investigates the masking capacities of different buffer formulations and whether masked endotoxin is biologically active. We show that both naturally occurring endotoxin as well as control standard endotoxin can be affected by LER...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317731/encapsulation-of-sesamol-in-phosphatidyl-choline-micelles-enhanced-bioavailability-and-anti-inflammatory-activity
#10
P S Yashaswini, Nawneet K Kurrey, Sridevi A Singh
Sesamol, the phenolic degradation product of sesamolin, although recognised for its anti-inflammatory effects, has low bioavailability. In this manuscript, we attempted to improve its bioavailability by encapsulation in mixed phosphatidylcholine micelles. Sesamol could be solubilised and entrapped in phosphatidylcholine mixed micelles (PCS) with 96.8% efficiency (particle size 3.0±0.06nm). Fluorescence spectra of PCS revealed lower relative fluorescence intensity (RFI 112) compared to 'free' sesamol (FS) (RFI 271)...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28317488/association-between-periodontal-health-status-and-cognitive-abilities-the-role-of-cytokine-profile-and-systemic-inflammation
#11
Marta Sochocka, Maciej Sobczyński, Aleksandra Sender-Janeczek, Katarzyna Zwolińska, Olga Błachowicz, Tomasz Tomczyk, Marek Ziętek, Jerzy Leszek
BACKGROUND: Contemporary neurobiology, periodontal medicine, and immunology are now focusing on the relationship between chronic periodontitis and systemic diseases, that also include Alzheimer's disease (AD). However a causative relationship between dementia and periodontitis has yet to be confirmed. OBJECTIVE: The aim of the study was to determine whether periodontal health status and cognitive abilities are correlated with the relative changes in systemic measures of pro- and anti-inflammatory cytokines as a reflection of systemic inflammation...
March 16, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28316376/the-role-of-intestinal-alkaline-phosphatase-in-inflammatory-disorders-of-gastrointestinal-tract
#12
REVIEW
Jan Bilski, Agnieszka Mazur-Bialy, Dagmara Wojcik, Janina Zahradnik-Bilska, Bartosz Brzozowski, Marcin Magierowski, Tomasz Mach, Katarzyna Magierowska, Tomasz Brzozowski
Over the past few years, the role of intestinal alkaline phosphatase (IAP) as a crucial mucosal defence factor essential for maintaining gut homeostasis has been established. IAP is an important apical brush border enzyme expressed throughout the gastrointestinal tract and secreted both into the intestinal lumen and into the bloodstream. IAP exerts its effects through dephosphorylation of proinflammatory molecules including lipopolysaccharide (LPS), flagellin, and adenosine triphosphate (ATP) released from cells during stressful events...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28316375/torilin-inhibits-inflammation-by-limiting-tak1-mediated-map-kinase-and-nf-%C3%AE%C2%BAb-activation
#13
Mehari Endale, Tae-Hwan Kim, Yi-Seong Kwak, Na-Mi Kim, Seung-Hyung Kim, Jae Youl Cho, Bong-Sik Yun, Man-Hee Rhee
Torilin, a sesquiterpene isolated from the fruits of Torilis japonica, has shown antimicrobial, anticancer, and anti-inflammatory properties. However, data on the mechanism of torilin action against inflammation is limited. This study aimed at determining the anti-inflammatory property of torilin in LPS-induced inflammation using in vitro model of inflammation. We examined torilin's effect on expression levels of inflammatory mediators and cytokines in LPS-stimulated RAW 264.7 macrophages. The involvement of NF-kB and AP-1, MAP kinases, and adaptor proteins were assessed...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28315999/artesunate-protects-lps-induced-acute-lung-injury-by-inhibiting-tlr4-expression-and-inducing-nrf2-activation
#14
Deli Zhao, Jinling Zhang, Guangquan Xu, Qiushi Wang
Artesunate, a derivative of artemisinin, has been reported to have anti-inflammatory property. However, few studies showed the protective effects of artesunate on lung injury. In this study, we aimed to investigate the effects of artesunate on LPS-induced lung injury in mice. The mice were treated with artesunate 1 h before or after LPS treatment. The effects of artesunate on lung MPO activity and malondialdehyde (MDA) content were detected. The lung wet/dry radio and the numbers of inflammatory cells in BALF were also measured...
March 18, 2017: Inflammation
https://www.readbyqxmd.com/read/28315822/protective-effect-of-zerumbone-reduces-lipopolysaccharide-induced-acute-lung-injury-via-antioxidative-enzymes-and-nrf2-ho-1-pathway
#15
Wai-Shing Leung, Ming-Ling Yang, Shiuan-Shinn Lee, Chi-Wen Kuo, Yung-Chyuan Ho, Rosa Huang-Liu, Hui-Wen Lin, Yu-Hsiang Kuan
Acute lung injury (ALI) is a serious disease with high morbidity and mortality rate. Although there are effective strategies for treatment of ALI; a widely accepted specific pharmacotherapy has not yet established. Zerumbone, the major active phytochemical compound from Zingiber zerumbet Smith, exhibits various beneficial biological and pharmacological activities, such as antioxidation, anti-inflammation, immunomodulation, and anti-cancer. We aimed to study the potential protective effects and mechanisms of zerumbone in mouse model of lipopolysaccharide (LPS)-induced ALI...
March 15, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28315683/klotho-ameliorates-cyclosporine-a-induced-nephropathy-via-pdlim2-nf-kb-p65-signaling-pathway
#16
Meihua Jin, Pengfei Lv, Guanyu Chen, Peng Wang, Zhongfu Zuo, Lili Ren, Jing Bi, Chul-Woo Yang, Xifan Mei, Donghe Han
Klotho, an antiaging protein, can extend the lifespan and modulate cellular responses to inflammation and oxidative stress which can ameliorate chronic kidney diseases (CKD). To investigate the molecular mechanism of Klotho on inflammation in cyclosporine A (CsA) induced nephropathy, the mice were transfected with adenovirus mediated Klotho gene and treated with cyclosporine A (CsA; 30 mg/kg/day) for 4 weeks. Also, primary human renal proximal tubule epithelial cells (RPTECs) were treated with soluble Klotho protein and LPS...
March 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28315126/screening-for-main-components-associated-with-the-idiosyncratic-hepatotoxicity-of-a-tonic-herb-polygonum-multiflorum
#17
Chunyu Li, Ming Niu, Zhaofang Bai, Congen Zhang, Yanling Zhao, Ruiyu Li, Can Tu, Huifang Li, Jing Jing, Yakun Meng, Zhijie Ma, Wuwen Feng, Jinfa Tang, Yun Zhu, Jinjie Li, Xiaoya Shang, Zhengsheng Zou, Xiaohe Xiao, Jiabo Wang
The main constituents of a typical medicinal herb, Polygonum multiflorum (Heshouwu in Chinese), that induces idiosyncratic liver injury remain unclear. Our previous work has shown that cotreatment with a nontoxic dose of lipopolysaccharide (LPS) and therapeutic dose of Heshouwu can induce liver injury in rats, whereas the solo treatment cannot induce observable injury. In the present work, using the constituent "knock-out" and "knock-in" strategy, we found that the ethyl acetate (EA) extract of Heshouwu displayed comparable idiosyncratic hepatotoxicity to the whole extract in LPS-treated rats...
March 17, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/28314769/infrared-spectroscopic-characterization-of-monocytic-microvesicles-microparticles-released-upon-lipopolysaccharide-stimulation
#18
Joonsup Lee, Beryl Wen, Elizabeth A Carter, Valery Combes, Georges E R Grau, Peter A Lay
Microvesicles (MVs) are involved in cell-cell interactions, including disease pathogenesis. Nondestructive Fourier-transform infrared (FTIR) spectra from MVs were assessed as a technique to provide new biochemical insights into a LPS-induced monocyte model of septic shock. FTIR spectroscopy provided a quick method to investigate relative differences in biomolecular content of different MV populations that was complementary to traditional semiquantitative omics approaches, with which it is difficult to provide information on relative changes between classes (proteins, lipids, nucleic acids, carbohydrates) or protein conformations...
March 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28314156/an-explant-of-heifer-mammary-gland-to-study-the-immune-response-of-the-organ
#19
Giada Magro, Tiziana A L Brevini, Marcella De Maglie, Giulietta Minozzi, Eugenio Scanziani, Renata Piccinini
Continuous or primary epithelial cell lines have been extensively used to study the mammary gland immune response, but they are constituted by a single cell population. Our aim was to test whether an explant of heifer gland, where the tissue structure is maintained, might be a valid model to investigate the innate immune response to infection. The study was carried out on 2mm(3)-sections of heifer udders, in 2 consecutive trials, using LPS or LTA in the first trial and two different concentrations of Staphylococcus aureus (Staph...
March 6, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28314106/runt-related-transcription-factor-1-regulates-lps-induced-acute-lung-injury-via-nf-%C3%AE%C2%BAb-signaling
#20
Xiaoju Tang, Ling Sun, Xiaodong Jin, Yifan Chen, Hui Zhu, Yasha Liang, Qingbo Wu, Xing Han, Jianing Liang, Xiaojing Liu, Zongan Liang, Gang Wang, Fengming Luo
RATIONALE: RUNX1, a transcription factor expressed in multiple organs, plays important roles in embryonic development and hematopoiesis. While RUNX1 is highly expressed in pulmonary tissues, its role in lung function and homeostasis are unknown. OBJECTIVES: To assess the role of RUNX1 in the lung development and inflammation after lipopolysaccharide challenge. METHODS: Expression of RUNX1 was assessed in human respiratory epithelial cells...
March 17, 2017: American Journal of Respiratory Cell and Molecular Biology
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