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https://www.readbyqxmd.com/read/29679858/anti-inflammatory-effect-of-apo-9-fucoxanthinone-via-inhibition-of-mapks-and-nf-kb-signaling-pathway-in-lps-stimulated-raw-264-7-macrophages-and-zebrafish-model
#1
Eun-A Kim, Seo-Young Kim, Bo-Ram Ye, Junseong Kim, Seok-Chun Ko, Won Woo Lee, Kil-Nam Kim, Il-Whan Choi, Won-Kyo Jung, Soo-Jin Heo
In this study, we confirmed the anti-inflammatory effect of Apo-9-fucoxanthinone (AF) in in vitro RAW 264.7 cells and in vivo zebrafish model. In lipopolysaccharide (LPS)-stimulated zebrafish, AF significantly decreased the production of reactive oxygen species (ROS), nitric oxide (NO) and cell death. In addition, the mRNA expression of inducible nitric oxide synthase (iNOS), suppressed cyclooxygenase-2 (COX-2) and an inflammatory cytokines; IL-1β, TNF-α were shown reduction. And AF significantly inhibited NO production and expression of iNOS in LPS-stimulated RAW 264...
April 18, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29679753/daidzein-rich-isoflavone-aglycones-inhibit-cell-growth-and-inflammation-in-endometriosis
#2
O Takaoka, T Mori, F Ito, H Okimura, H Kataoka, Y Tanaka, A Koshiba, I Kusuki, S Shigehiro, T Amami, J Kitawaki
Endometriosis is an estrogen-dependent disease, and isoflavones interact with estrogen receptors. The purposes of this study are to investigate the in vitro and in vivo effects of daidzein-rich isoflavone aglycones (DRIAs), dietary supplements, on cellular proliferation in endometriosis. Stromal cells isolated from ovarian endometrioma (OESCs) and normal endometrium (NESCs) were cultured with DRIAs, i.e., each of the DRIA components (daidzein, genistein, or glycitein), or isoflavone glycosides (IG; DRIA precursors)...
April 18, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29678951/cyclooxygenase-1-and-2-play-contrasting-roles-in-listeria-stimulated-immunity
#3
Erin Theisen, Courtney E McDougal, Masako Nakanishi, David M Stevenson, Daniel Amador-Noguez, Daniel W Rosenberg, Laura J Knoll, John-Demian Sauer
Nonsteroidal anti-inflammatory drugs (NSAIDs) inhibit cyclooxygenase (COX) activity and are commonly used for pain relief and fever reduction. NSAIDs are used following childhood vaccinations and cancer immunotherapies; however, how NSAIDs influence the development of immunity following these therapies is unknown. We hypothesized that NSAIDs would modulate the development of an immune response to Listeria monocytogenes -based immunotherapy. Treatment of mice with the nonspecific COX inhibitor indomethacin impaired the generation of cell-mediated immunity...
April 20, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29678208/glial-interleukin-1%C3%AE-upregulates-neuronal-sodium-channel-1-7-in-trigeminal-ganglion-contributing-to-temporomandibular-joint-inflammatory-hypernociception-in-rats
#4
Peng Zhang, Rui-Yun Bi, Ye-Hua Gan
BACKGROUND: The proinflammatory cytokine interleukin-1β (IL-1β) drives pain by inducing the expression of inflammatory mediators; however, its ability to regulate sodium channel 1.7 (Nav1.7), a key driver of temporomandibular joint (TMJ) hypernociception, remains unknown. IL-1β induces cyclooxygenase-2 (COX-2) and prostaglandin E2 (PGE2). We previously showed that PGE2 upregulated trigeminal ganglionic Nav1.7 expression. Satellite glial cells (SGCs) involve in inflammatory pain through glial cytokines...
April 20, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29677640/18%C3%AE-glycyrrhetinic-acid-mitigates-radiation-induced-skin-damage-via-nadph-oxidase-ros-p38mapk-and-nf-%C3%AE%C2%BAb-pathways
#5
Li Su, Zeng Wang, Fei Huang, Ruilong Lan, Xiuying Chen, Deping Han, Lurong Zhang, Weijian Zhang, Jinsheng Hong
Radiation-induced inflammation plays an important role in radiation-induced tissue injury. 18β-glycyrrhetinic acid (18β-GA) has shown an anti-inflammatory activity. This study aimed to assess the activity of 18β-GA against radiation-induced skin damage, and explore the underlying mechanisms. In vitro assay revealed 18β-GA treatment decreased the production of IL-1β, IL-6, PGE2 and decreased p38MAPK phosphorylation, DNA-binding activity of AP-1, and NF-κB activation in irradiated RAW264.7 macrophages. Additionally, 18β-GA suppressed NF-κB activation by inhibiting NF-κB/p65 and IκB-α phosphorylation and alleviated ROS overproduction in irradiated RAW264...
April 13, 2018: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29674032/reliable-determination-of-new-lipid-peroxidation-compounds-as-potential-early-alzheimer-disease-biomarkers
#6
Ana García-Blanco, Carmen Peña-Bautista, Camille Oger, Claire Vigor, Jean-Marie Galano, Thierry Durand, Nuria Martín-Ibáñez, Miguel Baquero, Máximo Vento, Consuelo Cháfer-Pericás
Lipid peroxidation plays an important role in Alzheimer Disease, so corresponding metabolites found in urine samples could be potential biomarkers. The aim of this work is to develop a reliable ultra-performance liquid chromatography-tandem mass spectrometry analytical method to determine a new set of lipid peroxidation compounds in urine samples. Excellent sensitivity was achieved with limits of detection between 0.08 and 17 nmol L-1 , which renders this method suitable to monitor analytes concentrations in real samples...
July 1, 2018: Talanta
https://www.readbyqxmd.com/read/29670660/evaluation-of-analgesic-and-anti-inflammatory-activities-of-water-extract-of-galla-chinensis-in-vivo-models
#7
Kai Sun, Xu Song, RenYong Jia, Zhongqiong Yin, Yuanfeng Zou, Lixia Li, Lizi Yin, Changliang He, Xiaoxia Liang, Guizhou Yue, Qiankun Cui, Yi Yang
Aim: Pain and inflammation are associated with many diseases in humans and animals. Galla Chinensis , a traditional Chinese medicine, has a variety of pharmacological properties. The purpose of this study was to evaluate analgesic and anti-inflammatory activities of Galla Chinensis through different animal models. Method: The analgesic activities were evaluated by hot-plate and writhing tests. The anti-inflammatory effects were assessed by ear edema, capillary permeability, and paw edema tests...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29669824/liver-receptor-homolog-1-lrh-1-regulates-organic-anion-transporter-2-oat2-and-docetaxel-pharmacokinetics
#8
Fangjun Yu, Tianpeng Zhang, Lianxia Guo, Baojian Wu
Organic anion transporter 2 (OAT2/SLC22A7) is an uptake transporter that plays an important role in drug disposition. Here, we investigate a potential role of liver receptor homolog-1 (Lrh-1) in regulation of Oat2 and docetaxel pharmacokinetics. Hepatoma cells (Hepa1-6 and HepG2 cells) were transfected with Lrh-1/LRH-1 expression vector or siRNA. The relative mRNA and protein levels of Oat2/OAT2 in the cells or livers of Lrh-1hep-/- mice were determined by qPCR and Western blotting, respectively. Transcriptional regulation of Oat2/OAT2 by Lrh-1/LRH-1 were investigated using luciferase reporter, mobility shift, and chromatin immunoprecipitation (ChIP) assays...
April 18, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/29668708/dectin-1-2-induced-autocrine-pge2-signaling-licenses-dendritic-cells-to-prime-th2-responses
#9
Maria M M Kaisar, Manuel Ritter, Carlos Del Fresno, Hulda S Jónasdóttir, Alwin J van der Ham, Leonard R Pelgrom, Gabriele Schramm, Laura E Layland, David Sancho, Clarissa Prazeres da Costa, Martin Giera, Maria Yazdanbakhsh, Bart Everts
The molecular mechanisms through which dendritic cells (DCs) prime T helper 2 (Th2) responses, including those elicited by parasitic helminths, remain incompletely understood. Here, we report that soluble egg antigen (SEA) from Schistosoma mansoni, which is well known to drive potent Th2 responses, triggers DCs to produce prostaglandin E2 (PGE2), which subsequently-in an autocrine manner-induces OX40 ligand (OX40L) expression to license these DCs to drive Th2 responses. Mechanistically, SEA was found to promote PGE2 synthesis through Dectin-1 and Dectin-2, and via a downstream signaling cascade involving spleen tyrosine kinase (Syk), extracellular signal-regulated kinase (ERK), cytosolic phospholipase A2 (cPLA2), and cyclooxygenase 1 and 2 (COX-1 and COX-2)...
April 18, 2018: PLoS Biology
https://www.readbyqxmd.com/read/29667908/the-macula-densa-prorenin-receptor-is-essential-in-renin-release-and-blood-pressure-control
#10
Anne D M Riquier-Brison, Arnold Sipos, Ágnes Prókai, Sarah L Vargas, Ildiko Toma, Elliott J Meer, Karie G Villanueva, Jennifer C M Chen, Georgina Gyarmati, Christopher Yih, Elaine Tang, Bahram Nadim, Sujith Pendekanti, Ingrid M Garrelds, Genevieve Nguyen, A H Jan Danser, Janos Peti-Peterdi
The prorenin receptor (PRR) was originally proposed to be a member of the renin-angiotensin system (RAS), however recent work questioned their association. The present paper describes a functional link between the PRR and RAS in the renal juxtaglomerular apparatus (JGA), a classic anatomical site of the RAS. PRR expression was found in the sensory cells of the JGA, the macula densa (MD), and immunohistochemistry localized PRR to the MD basolateral cell membrane in mouse, rat, and human kidneys. MD cell PRR activation led to MAP kinase ERK1/2 signaling and stimulation of PGE2 release, the classic pathway of MD-mediated renin release...
April 18, 2018: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29666854/casein-glycomacropeptide-hydrolysates-inhibit-pge2-production-and-cox2-expression-in-lps-stimulated-raw-264-7-macrophage-cells-via-akt-mediated-nf-%C3%AE%C2%BAb-and-mapk-pathways
#11
Tiange Li, Dongxiao Gao, Min Du, Xue Cheng, Xueying Mao
A casein glycomacropeptide hydrolysate (GMPH) was found to possess inhibitory activity against lipopolysaccharide (LPS)-induced inflammatory response in our previous study. In the current study, the inhibitory effect and the underlying molecular mechanism of GMPH on inflammatory response in LPS-stimulated RAW264.7 macrophages were further investigated. Results showed that GMPH significantly suppressed LPS-induced intracellular reactive oxygen species (ROS) and malondialdehyde (MDA) production. GMPH reduced the production of prostaglandin E2 (PEG2) and the expression of cyclooxygenase-2 (COX-2) and cytosolic phospholipase A2 (cPLA2) in LPS-stimulated macrophages...
April 18, 2018: Food & Function
https://www.readbyqxmd.com/read/29665328/effects-of-exposure-to-acetaminophen-and-ibuprofen-on-fetal-germ-cell-development-in-both-sexes-in-rodent-and-human-using-multiple-experimental-systems
#12
Pablo Hurtado-Gonzalez, Richard A Anderson, Joni Macdonald, Sander van den Driesche, Karen Kilcoyne, Anne Jørgensen, Chris McKinnell, Sheila Macpherson, Richard M Sharpe, Rod T Mitchell
BACKGROUND: Analgesic exposure during pregnancy may affect aspects of fetal gonadal development that are targeted by endocrine disruptors. OBJECTIVES: We investigated whether therapeutically relevant doses of acetaminophen and ibuprofen affect germ cell (GC) development in human fetal testes/ovaries using in vitro and xenograft approaches. METHODS: Gonocyte (TFAP2C+ ) number was reduced relative to controls in first-trimester human fetal testes exposed in vitro to acetaminophen (-28%) or ibuprofen (-22%) and also in ovaries exposed to acetaminophen (-43%) or ibuprofen (-49%)...
April 16, 2018: Environmental Health Perspectives
https://www.readbyqxmd.com/read/29663159/evaluation-of-the-effect-of-polyphenol-of-escin-compared-with-ibuprofen-and-dexamethasone-in-synoviocyte-model-for-osteoarthritis-an-in-vitro-study
#13
Hossein Maghsoudi, Jamal Hallajzadeh, Mozhghan Rezaeipour
Osteoarthritis (OA) is a chronic degenerative joint disease with inflammatory component. It is associated with progressive histological alterations and disabling symptoms. Today, drugs such as glucocorticoids (GCs) and nonsteroidal anti-inflammatory drugs (NSIADs) are commonly employed for treatment of osteoarthritis, but have serious and life-threatening side effects. The aim of the current study is to evaluate the effects of escin on cyclooxygenase-2 (COX-2, isoform), inducible nitric oxide synthase (iNOS), interleukin-1β (IL-1β), interleukin-18 (IL-18), tumor necrosis factor-alpha (TNF-α), and nitric oxide (NO) (1), as well as prostaglandin E2 (PGE2) on inflammatory cells, similar osteoarthritis in synoviocytes, and monocytes/macrophages, and to compare it with dexamethasone (DEX) and ibuprofen (IBP)...
April 16, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29662945/metabotropic-glutamate-receptor-2-3-mglur2-3-activation-suppresses-trpv1-sensitization-in-mouse-but-not-human-sensory-neurons
#14
Tayler D Sheahan, Manouela V Valtcheva, Lisa A McIlvried, Melanie Y Pullen, David A A Baranger, Robert W Gereau
The use of human tissue to validate putative analgesic targets identified in rodents is a promising strategy for improving the historically poor translational record of preclinical pain research. We recently demonstrated that in mouse and human sensory neurons, agonists for metabotropic glutamate receptors 2 and 3 (mGluR2/3) reduce membrane hyperexcitability produced by the inflammatory mediator prostaglandin E2 (PGE2 ). Previous rodent studies indicate that mGluR2/3 can also reduce peripheral sensitization by suppressing inflammation-induced sensitization of TRPV1...
March 2018: ENeuro
https://www.readbyqxmd.com/read/29661238/ep3-prostaglandin-e2-receptor-3-expression-is-a-prognostic-factor-for-progression-free-and-overall-survival-in-sporadic-breast-cancer
#15
Anna Semmlinger, Viktoria von Schoenfeldt, Verena Wolf, Alexandra Meuter, Theresa Maria Kolben, Thomas Kolben, Christine Zeder-Goess, Florian Weis, Julia Gallwas, Rachel Wuerstlein, Kerstin Hermelink, Elisa Schmoeckel, Nadia Harbeck, Doris Mayr, Sven Mahner, Udo Jeschke, Nina Ditsch
BACKGROUND: In various cancers, overexpression of cyclooxygenase (COX)-2 and elevated prostaglandin (PG) E2 synthesis have been associated with tumor development and progression. The potential of COX-2 inhibitors in cancer prevention and treatment has been shown repeatedly; however, their clinical use is limited due to toxicity. PGE2 signals via EP receptors 1-4, whose functions are analyzed in current research in search for targeted anti-PG therapies. EP2 and EP4 rather promote tumorigenesis, while the role of EP3, especially in breast cancer, is not yet clear and both pro- and anti-tumorigenic effects have been described...
April 16, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29660467/investigation-of-constituents-from-cinnamomum-camphora-l-j-presl-and-evaluation-of-their-anti-inflammatory-properties-in-lipopolysaccharide-stimulated-raw-264-7-macrophages
#16
Yan-Ru Li, Chun-Sheng Fu, Wen-Jing Yang, Xiao-Ling Wang, Dan Feng, Xiao-Ning Wang, Dong-Mei Ren, Hong-Xiang Lou, Tao Shen
ETHNOPHARMACOLOGY RELEVANCE: Cinnamomum camphora (L.) J. Presl has been used for the traditional medicine as a therapeutic agent of inflammation-related diseases, including sprains, rheumatic arthritis, abdominal pain, cough and bronchitis, for a long history. The aim of the present study was to illustrate anti-inflammatory substances of C. camphora and their mechanism of action, and to establish the correlations between chemical constituents and traditional uses of this plant. MATERIALS AND METHODS: Chemical constituents were purified by chromatographic methods, and their structures were established based on spectroscopic analysis...
April 13, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29660334/fatty-acids-modulate-the-efficacy-of-lutein-in-cataract-prevention-assessment-of-oxidative-and-inflammatory-parameters-in-rats
#17
Smitha Padmanabha, Vallikannan Baskaran
BACKGROUND: Effects of lutein (L) and fatty acids [linoleic acid (LA), eicosapentaenoic acid (EPA)+docosahexaenoic acid (DHA) and oleic acid (OA)] on oxidative stress and inflammation in cataract were assessed. METHODS: Cataract was induced in male Wistar rat pups (11 days old) by giving a single dose of sodium selenite (25 μM/kg body weight) by IP. Lutein (1.3 μmol/kg body weight) was given one day before and five days after selenite injection as a micelle with 7...
April 13, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29658360/hyaluronic-acid-promotes-proliferation-and-migration-of-human-meniscus-cells-via-a-cd44-dependent-mechanism
#18
Tomohiko Murakami, Shuhei Otsuki, Yoshinori Okamoto, Kosuke Nakagawa, Hitoshi Wakama, Nobuhiro Okuno, Masashi Neo
PURPOSE: Treatment of meniscal injury is important for osteoarthritis (OA) prevention. Meniscus cells are divided between inner and outer cells, which have different characteristics and vascularity. We evaluated the effects of hyaluronic acid (HA) on the proliferation and migration of human inner and outer meniscus cells, and investigated the underlying healing mechanisms. MATERIALS AND METHODS: Lateral menisci from 18 patients who underwent total knee arthroplasty were used...
April 15, 2018: Connective Tissue Research
https://www.readbyqxmd.com/read/29658109/pge-2-ep-4-antagonism-enhances-tumor-chemosensitivity-by-inducing-extracellular-vesicle-mediated-clearance-of-cancer-stem-cells
#19
Meng-Chieh Lin, Shih-Yin Chen, Pei- Lin He, Harvey Herschman, Hua-Jung Li
Cells expressing mesenchymal/basal phenotypes in tumors have been associated with stem cell properties. Cancer stem cells (CSCs) are often resistant to conventional chemotherapy. We explored overcoming mesenchymal CSC resistance to chemotherapeutic agents. Our goal was to reduce CSC numbers in vivo, in conjunction with chemotherapy, to reduce tumor burden. Analysis of clinical samples demonstrated that COX-2/PGE2 /EP4 signaling is elevated in basal-like and chemoresistant breast carcinoma and is correlated with survival and relapse of breast cancer...
April 15, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29651107/circular-rna-circ-4099-is-induced-by-tnf-%C3%AE-and-regulates-ecm-synthesis-by-blocking-mir-616-5p-inhibition-of-sox9-in-intervertebral-disc-degeneration
#20
Hua Wang, Peiheng He, Hehai Pan, Jun Long, Jianru Wang, Zemin Li, Hui Liu, Weiying Jiang, Zhaomin Zheng
Circular RNAs (circRNAs) play important roles in the initiation and development of different diseases. Here, we detected their role in intervertebral disc (IVD) degeneration. An Arraystar human circular RNA microarray assay was used to detect circRNAs in normal and degenerated human IVD nucleus pulposus (NP) tissues. The role of circ-4099 in IVDD and its mechanism were evaluated by qRT-PCR and gain-of-function/loss-of-function studies. Interaction networks for competing endogenous RNAs (ceRNAs), miRNAs, and miRNA target gene were detected by bioinformatics analysis, RNA immunoprecipitation and luciferase assay...
April 13, 2018: Experimental & Molecular Medicine
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