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https://www.readbyqxmd.com/read/29453815/the-use-of-chitosan-porous-3d-scaffolds-embedded-with-resolvin-d1-to-improve-in-vivo-bone-healing
#1
Daniela P Vasconcelos, Madalena Costa, Nuno Neves, José H Teixeira, Daniel M Vasconcelos, Susana G Santos, Artur P Águas, Mário A Barbosa, Judite N Barbosa
The aim of this study was to investigate the effect chitosan (Ch) porous 3D scaffolds embedded with resolvin D1 (RvD1), an endogenous pro-resolving lipid mediator, on bone tissue healing. These scaffolds previous developed by us have demonstrated to have immunomodulatory properties namely in the modulation of the macrophage inflammatory phenotypic profile in an in vivo model of inflammation. Herein, results obtained in an in vivo rat femoral defect model demonstrated that two months after Ch+RvD1 scaffolds implantation, an increase in new bone formation, in bone trabecular thickness, and in collagen type I and Coll I/Coll III ratio were observed...
February 17, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29439730/resolvin-d2-protects-against-cerebral-ischemia-reperfusion-injury-in-rats
#2
Gang Zuo, Dongping Zhang, Rutao Mu, Haitao Shen, Xiang Li, Zhong Wang, Haiying Li, Gang Chen
Cerebral ischemia/reperfusion (I/R) injury is a critical factor leading to a poor prognosis for ischemic stroke patients. ω-3 fatty acid supplements taken as part of a daily diet have been shown to improve the prognosis of patients with ischemic stroke. In this study, we aimed to investigate the potential effects of resolvin D2 (RvD2), a derivative of ω-3 fatty acids, and its possible advantage on cerebral I/R injury in rats. Cerebral I/R caused by middle cerebral artery occlusion and reperfusion (MCAO/R) was established in Sprague-Dawley rats...
February 13, 2018: Molecular Brain
https://www.readbyqxmd.com/read/29439118/understanding-novel-mechanisms-of-microbial-pathogenesis-in-chronic-lung-disease-implications-for-new-therapeutic-targets
#3
Mathew Suji Eapen, Sukhwinder Singh Sohal
Airway infections are considered as one of the vital factors driving the pathophysiology of chronic lung disease with significant influences on disease trajectory. Opportunistic lung microbes in diseased conditions induce excessive exacerbations and contribute to airflow limitation. Though there has been considerable amount of information that ascertains their links with airway inflammation, the intricate interaction in clinical conditions are poorly understood and requires further deciphering. Current therapeutic interventions for such pathologies are few and lack the ability to modulate underlying dysfunctional immunity as well as suppress the excessive infectious conditions...
February 14, 2018: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29420307/the-roles-of-special-proresolving-mediators-in-pain-relief
#4
Lan-Yu Zhang, Ming-Rui Jia, Tao Sun
The resolution of acute inflammation, once thought to be a passive process, is now recognized as an active one. The productions of endogenous special proresolving mediators (SPMs) are involved in this process. SPMs, including lipoxins, resolvins, protectins, and maresins, are endogenous lipid mediators generated from ω-6 arachidonic acid or ω-3 poly-unsaturated fatty acids during the resolution phase of acute inflammation. They have potent anti-inflammatory and proresolving actions in various inflammatory disorders...
February 8, 2018: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/29411084/comprehensive-targeted-and-non-targeted-lipidomics-analyses-in-failing-and-non-failing-heart
#5
Ganesh V Halade, Anela Dorbane, Kevin A Ingle, Vasundhara Kain, Jean-Marie Schmitter, Boutayna Rhourri-Frih
Myocardial infarction (MI) and subsequent progressive heart failure pathology is the major cause of death worldwide; however, the mechanism of this pathology remains unclear. The present work aimed at testing the hypothesis whether the inflammatory response is superimposed with the formation of bioactive lipid resolving molecules at the site of the injured myocardium in acute heart failure pathology post-MI. In this view, we used a robust permanent coronary ligation model to induce MI, leading to decreased contractility index with marked wall thinning and necrosis of the infarcted left ventricle...
February 6, 2018: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29408202/resolvin-d1-blocks-h2o2-mediated-inhibitory-crosstalk-between-shp2-and-pp2a-and-suppresses-endothelial-monocyte-interactions
#6
Rima Chattopadhyay, Arul M Mani, Nikhlesh K Singh, Gadiparthi N Rao
In recent years, various studies have demonstrated a role for endogenously derived specialized proresolving mediators such as resolvins in the resolution of inflammation. In exploring the signaling mechanisms, in the present study we show that Resolvin D1 (RvD1) reduces LPS-induced endothelial cell (EC)-monocyte interactions via blocking H2O2-mediated PP2A inactivation, NFκB activation and ICAM1 and VCAM1 expression. In addition, we found that H2O2-mediated SHP2 inhibition leads to tyrosine phosphorylation and inactivation of PP2A by LPS, which in turn, accounts for increased NFκB activation and ICAM1 and VCAM1 expression facilitating EC-monocyte interactions and all these LPS-mediated responses were reduced by RvD1...
February 2, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29379552/differential-action-of-polyunsaturated-fatty-acids-and-eicosanoids-on-bleomycin-induced-cytotoxicity-to-neuroblastoma-cells-and-lymphocytes
#7
Sailaja Polavarapu, Bilikere S Dwarakanath, Undurti N Das
Introduction: This study was conducted to examine whether bleomycin-induced growth inhibitory action on human neuroblastoma cells (IMR-32) is influenced by anti-inflammatory metabolites of polyunsaturated fatty acids (PUFAs): lipoxin A4 (LXA4), resolvin D1 and protectin D1 in vitro. Material and methods: The in vitro study was conducted using monolayer cultures of exponentially growing IMR-32 cells. The effects of various PUFAs and eicosanoids and anti-inflammatory metabolites of PUFAs such as lipoxin A4 (LXA4), resolvin D1 and protectin D1 on the growth of IMR-32 cells and human lymphocytes in vitro were investigated...
January 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29377345/structural-insights-into-resolvin-d4-actions-and-further-metabolites-via-a-new-total-organic-synthesis-and-validation
#8
Jeremy W Winkler, Stephania Libreros, Xavier De La Rosa, Brian E Sansbury, Paul C Norris, Nan Chiang, David Fichtner, Gregory S Keyes, Nicholas Wourms, Matthew Spite, Charles N Serhan
Local production and downstream metabolism of specialized proresolving lipid mediators (SPMs) are pivotal in regulating their biological actions during resolution of inflammation. Resolvin D4 (RvD4: 4S,5R,17S-trihydroxydocosa-6E,8E,10Z,13Z,15E,19Z hexaenoic acid) is one of the more recently elucidated SPMs with complete stereochemistry biosynthesized from docosahexaenoic acid . Here, we report a new multimilligram commercial synthesis that afforded enough material for matching, validation, and further evaluation of RvD4 functions...
January 29, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29365572/atherothrombosis-resolution-of-vessel-wall-inflammation-and-limitation-of-thrombosis-and-thrombus-propagation-by-resolvins
#9
James Hamilton, Hatice Hasturk, Alpdogan Kantarci, Thomas Van Dyke, Alkystis Phinikaridou
No abstract text is available yet for this article.
August 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29365526/interest-of-mox-ldl-to-initiate-resolution-of-inflammatory-process-by-production-of-resolvin-d1
#10
Damien Dufour, Alia Khalil, Alexandre Rousseau, Caroline Noyon, Melissa Cortese, Cédric Delporte, Jean Nève, Luc Vanhamme, Karim Zouaoui Boudjeltia, Pierre Van Antwerpen
No abstract text is available yet for this article.
August 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29363065/lipid-mediator-metabolomics-via-lc-ms-ms-profiling-and-analysis
#11
Jesmond Dalli, Romain A Colas, Mary E Walker, Charles N Serhan
Solid-phase extraction coupled with liquid chromatography tandem mass spectrometry provides a robust and sensitive approach for the identification and quantitation of specialized pro-resolving mediators (lipoxins, resolvins, protectins, and maresins), their pathway markers and the classic eicosanoids. Here, we provide a detailed description of the methodologies employed for the extraction of these mediators from biological systems, setup of the instrumentation, sample processing, and then the procedures followed for their identification and quantitation...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29358332/trypanosoma-cruzi-produces-the-specialized-proresolving-mediators-resolvin-d1-resolvin-d5-and-resolvin-e2
#12
Romain A Colas, Anthony W Ashton, Shankar Mukherjee, Jesmond Dalli, Oscar B Akide-Ndunge, Huan Huang, Mahalia S Desruisseaux, Fangxia Guan, Linda A Jelicks, Fabiane Matos Dos Santos, Jyothi Nagajyothi, Michael Zingman, Jinet Reyes, Louis M Weiss, Charles N Serhan, Herbert B Tanowitz
Trypanosoma cruzi is a protozoan parasite that causes Chagas disease (CD). CD is a persistent, life-long infection affecting many organs, most notably the heart where it may result in acute myocarditis and chronic cardiomyopathy. The pathological features include myocardial inflammation and fibrosis. In the Brazil-strain infected CD-1 mouse that recapitulates many of the features of human infection, we found increased plasma levels of resolvin D1 (RvD1), a specialized pro-resolving mediator of inflammation, both during the acute and chronic phases of the infection (>100 days post infection) as determined by ELISA...
January 22, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29357041/resolvin-d1-halts-remote-neuroinflammation-and-improves-functional-recovery-after-focal-brain-damage-via-alx-fpr2-receptor-regulated-micrornas
#13
Elisa Bisicchia, Valeria Sasso, Giuseppina Catanzaro, Alessandro Leuti, Zein Mersini Besharat, Martina Chiacchiarini, Marco Molinari, Elisabetta Ferretti, Maria Teresa Viscomi, Valerio Chiurchiù
Remote damage is a secondary phenomenon that usually occurs after a primary brain damage in regions that are distant, yet functionally connected, and that is critical for determining the outcomes of several CNS pathologies, including traumatic brain and spinal cord injuries. The understanding of remote damage-associated mechanisms has been mostly achieved in several models of focal brain injury such as the hemicerebellectomy (HCb) experimental paradigm, which helped to identify the involvement of many key players, such as inflammation, oxidative stress, apoptosis and autophagy...
January 22, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29352860/towards-targeting-resolution-pathways-of-airway-inflammation-in-asthma
#14
REVIEW
Cindy Barnig, Nelly Frossard, Bruce D Levy
Asthma is a chronic disorder characterized by persistent inflammation of the airways with mucosal infiltration of eosinophils, T lymphocytes, and mast cells, and release of proinflammatory cytokines and lipid mediators. The natural resolution of airway inflammation is now recognized as an active host response, with highly coordinated cellular events under the control of endogenous pro-resolving mediators that enable the restoration of tissue homeostasis. Lead members of proresolving mediators are enzymatically derived from essential polyunsaturated fatty acids, including arachidonic acid-derived lipoxins, eicosapentaenoic acid-derived E-series resolvins, and docosahexaenoic acid-derived D-series resolvins, protectins, and maresins...
January 17, 2018: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29352769/resolvin-e1-resolvin-d1-and-resolvin-d2-inhibit-constriction-of-rat-thoracic-aorta-and-human-pulmonary-artery-induced-by-the-thromboxane-mimetic-u46619
#15
Melanie Jannaway, Christopher Torrens, Jane A Warner, Anthony P Sampson
BACKGROUND AND PURPOSE: Omega-6 fatty acid-derived lipid mediators such as prostanoids, thromboxane and leukotrienes have well-established roles in regulating both inflammation and smooth muscle contractility. Resolvins are derived from omega-3 fatty acids and have important roles in promoting the resolution of inflammation, but their activity on smooth muscle contractility is unknown. We investigated whether resolvin E1 (RvE1), resolvin D1 (RvD1) and resolvin D2 (RvD2) can modulate contractions of isolated segments of rat thoracic aorta (RTA) or human pulmonary artery (HPA) induced by the α1 -adrenoceptor agonist phenylephrine or the stable thromboxane A2 mimetic U46619...
January 20, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29319804/effects-of-agricultural-organic-dusts-on-human-lung-resident-mesenchymal-stem-stromal-cell-function
#16
Tara M Nordgren, Kristina L Bailey, Art J Heires, Dawn Katafiasz, Debra J Romberger
Agricultural organic dust exposures trigger harmful airway inflammation, and workers experiencing repetitive dust exposures are at increased risk for lung disease. Mesenchymal stem/stromal cells (MSC) regulate wound repair processes in the lung, and may contribute to either pro-resolution or pro-fibrotic lung responses. It is unknown how organic dust exposures alter lung-resident MSC activation and pro-inflammatory versus pro-repair programs in the lung. To address this gap in knowledge, we isolated human lung-resident MSC from lung tissue...
January 8, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29312587/tumour-microenvironmental-blood-flow-determines-a-metabolomic-signature-identifying-lysophospholipids-and-resolvin-d-as-biomarkers-in-endometrial-cancer-patients
#17
Núria Eritja, Mariona Jové, Kristine Eldevik Fasmer, Sònia Gatius, Manuel Portero-Otin, Jone Trovik, Camilla Krakstad, Joaquim Sol, Reinald Pamplona, Ingfrid S Haldorsen, Xavier Matias-Guiu
Purpose: We aimed to study the potential influence of tumour blood flow -obtained from dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI)- in the metabolomic profiles of endometrial tumours. Methods: Liquid chromatography coupled to mass spectrometry established the metabolomic profile of endometrial cancer lesions exhibiting high (n=12) or low (n=14) tumour blood flow at DCE-MRI. Univariate and multivariate statistics (ortho-PLS-DA, a random forest (RF) classifier and hierarchical clustering) and receiver operating characteristic (ROC) curves were used to establish a panel for potentially discriminating tumours with high versus low blood flow...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29305860/rvd1-inhibits-tnf%C3%AE-induced-c-myc-expression-in-normal-intestinal-epithelial-cells-and-destabilizes-hyper-expressed-c-myc-in-colon-cancer-cells
#18
Xiancai Zhong, Ha-Na Lee, Young-Joon Surh
Inflammatory bowel diseases, including ulcerative colitis and Crohn's disease, are persistent disorders that lead to development of colitis-associated cancer (CAC). Seeking the resolution of colitis has been addressed as a new therapeutic strategy to CAC. Resolvin D1 (RvD1) is an endogenous lipid mediator that is generated from docosahexaenoic acid during the resolution of inflammation. Although the pro-resolving effects of RvDs have been extensively investigated and well defined, the role for RvD1 in CAC remains largely unknown...
January 3, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29302056/human-macrophages-differentially-produce-specific-resolvin-or-leukotriene-signals-that-depend-on-bacterial-pathogenicity
#19
Oliver Werz, Jana Gerstmeier, Stephania Libreros, Xavier De la Rosa, Markus Werner, Paul C Norris, Nan Chiang, Charles N Serhan
Proinflammatory eicosanoids (prostaglandins and leukotrienes) and specialized pro-resolving mediators (SPM) are temporally regulated during infections. Here we show that human macrophage phenotypes biosynthesize unique lipid mediator signatures when exposed to pathogenic bacteria. E. coli and S. aureus each stimulate predominantly proinflammatory 5-lipoxygenase (LOX) and cyclooxygenase pathways (i.e., leukotriene B4 and prostaglandin E2) in M1 macrophages. These pathogens stimulate M2 macrophages to produce SPMs including resolvin D2 (RvD2), RvD5, and maresin-1...
January 4, 2018: Nature Communications
https://www.readbyqxmd.com/read/29279348/international-union-of-basic-and-clinical-pharmacology-ciii-chemerin-receptors-cmklr1-chemerin1-and-gpr1-chemerin2-nomenclature-pharmacology-and-function
#20
Amanda J Kennedy, Anthony P Davenport
Chemerin, a chemoattractant protein and adipokine, has been identified as the endogenous ligand for a G protein-coupled receptor encoded by the gene CMKLR1 (also known as ChemR23), and as a consequence the receptor protein was renamed the chemerin receptor in 2013. Since then, chemerin has been identified as the endogenous ligand for a second G protein-coupled receptor, encoded by the gene GPR1 Therefore, the International Union of Basic and Clinical Pharmacology Committee on Receptor Nomenclature and Drug Classification recommends that the official name of the receptor protein for chemokine-like receptor 1 (CMKLR1) is chemerin receptor 1, and G protein-coupled receptor 1 is chemerin receptor 2 to follow the convention of naming the receptor protein after the endogenous ligand...
January 2018: Pharmacological Reviews
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