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https://www.readbyqxmd.com/read/28721338/is-aortic-aneurysm-preventable
#1
Undurti N Das
Abdominal aortic aneurysm (AAA) is a chronic inflammatory condition, triggered by the local accumulation of macrophages, oxidative stress and damage to the aortic wall. Pro-inflammatory eicosanoids seem to play a significant role in AAA. The pro-inflammatory events seen in AAA could be due to a deficiency of anti-inflammatory eicosanoids such as lipoxin A4 (LXA4), resolvins, protectins and maresins as a result of reduced tissue concentrations of their precursors: arachidonic acid (AA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA)...
June 2017: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28703289/maresin-1-inhibits-tnf-alpha-induced-lipolysis-and-autophagy-in-3t3-l1-adipocytes
#2
Laura M Laiglesia, Silvia Lorente-Cebrián, Miguel López-Yoldi, Raquel Lanas, J Alfredo Martínez, Maria J Moreno-Aliaga
Obesity is associated with high pro-inflammatory cytokine levels like tumor necrosis factor-alpha (TNF-α), which promotes inflammation in adipose tissue. The omega-3 PUFAs, and their derived lipid mediators, such as Maresin 1 (MaR1) have anti-inflammatory effects on adipose tissue. This study aimed to analyze if MaR1 may counteract alterations induced by TNF-α on lipolysis and autophagy in mature 3T3-L1 adipocytes. Our data revealed that MaR1 (1-100 nM) inhibited the TNF-α-induced glycerol release after 48 h, which may be related to MaR1 ability of preventing the decrease of lipid droplet-coating protein perilipin and G0/G1 Switch 2 protein expression...
July 13, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28602942/the-novel-lipid-mediator-pd1n-3-dpa-an-overview-of-the-structural-elucidation-synthesis-biosynthesis-and-bioactions
#3
REVIEW
Trond Vidar Hansen, Jesmond Dalli, Charles N Serhan
Resolvins, protectins and maresins are individual families of specialized pro-resolving mediators biosynthesized from the dietary n-3 polyunsaturated fatty acids eicosapentaenoic acid and docosahexaenoic acid. These enzymatically oxygenated polyunsaturated lipid mediators were first elucidated during the resolution phase of acute inflammation in animal models of self-limited inflammation. Specialized pro-resolving mediators display potent bioactions when administrated in vivo. Biosynthetic pathway studies have revealed that individual lipoxygenases and cyclooxygenase-2 converts eicosapentaenoic acid and docosahexaenoic acid into distinct families of the resolvins, protectins and maresins...
June 7, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28532687/the-role-of-systemic-and-topical-fatty-acids-for-dry-eye-treatment
#4
REVIEW
Stefano Barabino, Jutta Horwath-Winter, Elisabeth M Messmer, Maurizio Rolando, Pasquale Aragona, Shigeru Kinoshita
Dry eye is a prevalent condition and one of the main reasons for patients to seek ophthalmic medical care. A low systemic level of omega fatty acids is a risk factor for dry eye disease (DED). There are two groups of essential fatty acids (EFAs): the omega-6 (n-6) family and the omega-3 (n-3) family. Humans evolved on a diet in which the n-6:n-3 ratio was approximately 1:1, however the current Western diet tends to be deficient in n-3 EFAs and this ratio is typically much higher (approaching 17:1). The metabolism of EFAs generates four new families of local acting mediators: lipoxins, resolvins, protectins, and maresins...
May 19, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28527709/boosting-inflammation-resolution-in-atherosclerosis-the-next-frontier-for-therapy
#5
REVIEW
Gabrielle Fredman, Ira Tabas
Defective inflammation resolution is the underlying cause of prevalent chronic inflammatory diseases, such as arthritis, asthma, cancer, and neurodegenerative and cardiovascular diseases. Inflammation resolution is governed by several endogenous factors, including fatty acid-derived specialized proresolving mediators and proteins, such as annexin A1. Specifically, specialized proresolving mediators comprise a family of mediators that include arachidonic acid-derived lipoxins, omega-3 fatty acid eicosapentaenoic acid-derived resolvins, docosahexaenoic acid-derived resolvins, protectins, and maresins...
June 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28450270/pro-resolution-therapeutics-for-cardiovascular-diseases
#6
REVIEW
Justin Heinz, Michael Marinello, Gabrielle Fredman
Studies over the last couple of decades suggest that failed resolution of a chronic inflammatory response is an important driving force in the progression of atherosclerosis. Resolution of inflammation is mediated in part by lipid-derived specialized pro-resolving mediators (SPMs) such as lipoxins, resolvins, protectins and maresins. The major functions of SPMs are to quell inflammation and repair tissue damage in a manner that does not compromise host defense. An imbalance between SPMs and pro-inflammatory mediators like leukotriene B4 (LTB4) are associated with several prevalent human diseases, including atherosclerosis...
April 24, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28400162/mammalian-alox15-orthologs-exhibit-pronounced-dual-positional-specificity-with-docosahexaenoic-acid
#7
Laura Kutzner, Kateryna Goloshchapova, Dagmar Heydeck, Sabine Stehling, Hartmut Kuhn, Nils Helge Schebb
Mammalian lipoxygenases (LOX) have been implicated in cell differentiation and in the pathogenesis of inflammatory, hyperproliferative and neurological diseases. Although the reaction specificity of mammalian LOX with n-6 fatty acids (linoleic acid, arachidonic acid) has been explored in detail little information is currently available on the product patterns formed from n-3 polyenoic fatty acids, which are of particular nutritional importance and serve as substrate for the biosynthesis of pro-resolving inflammatory mediators such as resolvins and maresins...
April 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28336292/structural-elucidation-and-physiologic-functions-of-specialized-pro-resolving-mediators-and-their-receptors
#8
REVIEW
Nan Chiang, Charles N Serhan
The acute inflammatory response is host-protective to contain foreign invaders. Many of today's pharmacopeia that block pro-inflammatory chemical mediators can cause serious unwanted side effects such as immune suppression. Uncontrolled inflammation is now considered a pathophysiologic basis associated with many widely occurring diseases such as cardiovascular disease, neurodegenerative diseases, diabetes, obesity and asthma, as well as the classic inflammatory diseases, e.g. arthritis, periodontal diseases...
March 31, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28302406/docosahexaenoic-acid-in-the-treatment-of-rheumatoid-arthritis-a%C3%A2-double-blind-placebo-controlled-randomized-cross-over-study-with-microalgae-vs-sunflower-oil
#9
C Dawczynski, M Dittrich, T Neumann, K Goetze, A Welzel, P Oelzner, S Völker, A M Schaible, F Troisi, L Thomas, S Pace, A Koeberle, O Werz, P Schlattmann, S Lorkowski, G Jahreis
The potential of fish or fish oil as supplier for eicosapentaenoic acid (EPA, C20:5n3) and docosahexaenoic acid (DHA, C22:6n3) for reducing cardiovascular risk factors and supporting therapy of chronic inflammatory diseases, has been investigated intensively, but our knowledge about the physiological effects of the individual compounds EPA and DHA are limited. STUDY DESIGN: In this double-blind pilot study, thirty-eight patients with defined RA were allocated to consume foods enriched with microalgae oil from Schizochytrium sp...
March 6, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28263773/discovery-of-specialized-pro-resolving-mediators-marks-the-dawn-of-resolution-physiology-and-pharmacology
#10
REVIEW
Charles N Serhan
It is with great pleasure that I write this foreword and introduction to this Special Issue dedicated to the protective actions of the pro-resolving mediators and edited by my colleague Dr. Jesmond Dalli. Many of my collaborators and colleagues that helped to uncover the actions and clinical potential of the resolvins and other specialized proresolving mediators (SPM), namely, the superfamily of pro-resolving mediators that includes the resolvin (E-series, D-series and DPA-derived), protectin and maresin families, as well as the arachidonic acid-derived lipoxins, join me in this special issue...
March 3, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28257820/specialized-pro-resolving-mediators-in-cardiovascular-diseases
#11
REVIEW
Gabrielle Fredman, Matthew Spite
The resolution of inflammation is a highly regulated process enacted by endogenous mediators including specialized pro-resolving lipid mediators (SPMs): the lipoxins, resolvins, protectins and maresins. SPMs activate specific cellular receptors to temper the production of pro-inflammatory mediators, diminish the recruitment of neutrophils, and promote the clearance of dead cells by macrophages. These mediators also enhance host-defense and couple resolution of inflammation to subsequent phases of tissue repair...
February 28, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28241480/pro-resolving-molecules-new-approaches-to-treat-sepsis
#12
REVIEW
Christa Buechler, Rebekka Pohl, Charalampos Aslanidis
Inflammation is a complex response of the body to exogenous and endogenous insults. Chronic and systemic diseases are attributed to uncontrolled inflammation. Molecules involved in the initiation of inflammation are very well studied while pathways regulating its resolution are insufficiently investigated. Approaches to down-modulate mediators relevant for the onset and duration of inflammation are successful in some chronic diseases, while all of them have failed in sepsis patients. Inflammation and immune suppression characterize sepsis, indicating that anti-inflammatory strategies alone are inappropriate for its therapy...
February 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28237084/identification-and-profiling-of-specialized-pro-resolving-mediators-in-human-tears-by-lipid-mediator-metabolomics
#13
Justin T English, Paul C Norris, Robin R Hodges, Darlene A Dartt, Charles N Serhan
Specialized pro-resolving mediators (SPM), e.g. Resolvin D1, Protectin D1, Lipoxin A₄, and Resolvin E1 have each shown to be active in ocular models reducing inflammation. In general, SPMs have specific agonist functions that stimulate resolution of infection and inflammation in animal disease models. The presence and quantity of SPM in human emotional tears is of interest. Here, utilizing a targeted LC-MS-MS metabololipidomics based approach we document the identification of pro-inflammatory (Prostaglandins and Leukotriene B₄) and pro-resolving lipid mediators (D-series Resolvins, Protectin D1, and Lipoxin A₄) in human emotional tears from 12 healthy individuals...
February 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28210259/resolution-of-cancer-promoting-inflammation-a-new-approach-for-anticancer-therapy
#14
REVIEW
Qi Zhang, Bo Zhu, Yongsheng Li
Inflammation is a protective response that eliminates harmful stimuli and restores tissue homeostasis, whereas the failure to resolve inflammation leads to the development of malignancies. Immune cells in the tumor inflammatory microenvironment endow cancer cells with their specific hallmarks, including mutations, metabolic reprograming, angiogenesis, invasion, and metastasis. Targeting the inflammatory microenvironment with anti-inflammatory drugs (e.g., aspirin) or by enhancing antitumor immunity (e.g., chimeric antigen receptor T cell therapy) has been extensively investigated and has achieved promising results in many cancers...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28188173/maresin-1-improves-insulin-sensitivity-and-attenuates-adipose-tissue-inflammation-in-ob-ob-and-diet-induced-obese-mice
#15
Leyre Martínez-Fernández, Pedro González-Muniesa, Laura M Laiglesia, Neira Sáinz, Pedro L Prieto-Hontoria, Xavier Escoté, Leticia Odriozola, Fernando J Corrales, Jose M Arbones-Mainar, José A Martínez, María J Moreno-Aliaga
The beneficial actions of n-3 fatty acids on obesity-induced insulin resistance and inflammation have been related to the synthesis of specialized proresolving lipid mediators (SPMs) like resolvins. The aim of this study was to evaluate the ability of one of these SPMs, maresin 1 (MaR1), to reverse adipose tissue inflammation and/or insulin resistance in two models of obesity: diet-induced obese (DIO) mice and genetic (ob/ob) obese mice. In DIO mice, MaR1 (2 μg/kg; 10 d) reduced F4/80-positive cells and expression of the proinflammatory M1 macrophage phenotype marker Cd11c in white adipose tissue (WAT)...
February 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28182085/maresin-1-mitigates-high-glucose-induced-mouse-glomerular-mesangial-cell-injury-by-inhibiting-inflammation-and-fibrosis
#16
Shi Tang, Chenlin Gao, Yang Long, Wei Huang, Jiao Chen, Fang Fan, Chunxia Jiang, Yong Xu
Background. Inflammation and fibrosis are the important pathophysiologic processes in diabetic nephropathy (DN). Maresin 1 is a potential anti-inflammatory lipid mediator, which has displayed powerful proresolving activities. Aim. We determine whether maresin 1 has protective effect on mouse glomerular mesangial cells (GMCs) induced by high glucose. Methods. We cultured GMCs stimulated by high glucose and categorized as follows: normal glucose group (5.6 mmol/L), high glucose group (30 mmol/L), mannitol group, maresin 1 intervention group (1, 10, and 100 nmol/L), maresin 1 and normal glucose group, and the N-acetylcysteine (NAC) intervention group (10 μmol/L NAC)...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28158236/pro-resolving-lipid-mediator-resolvin-d1-serves-as-a-marker-of-lung-disease-in-cystic-fibrosis
#17
Olaf Eickmeier, Daniela Fussbroich, Klaus Mueller, Friederike Serve, Christina Smaczny, Stefan Zielen, Ralf Schubert
BACKGROUND: Cystic fibrosis (CF) is an autosomal recessive genetic disorder that affects multiple organs, including the lungs, pancreas, liver and intestine. Mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) locus lead to defective proteins and reduced Cl- secretion and Na+ hyperabsorption in the affected organs. In addition, patients suffering from CF display chronic inflammation that contributes to the pathogenesis of CF. Recent work suggests that CF patients have a reduced capacity to biosynthesize specialized pro-resolving lipid mediators (SPMs), which contributes to the development and duration of the unwanted inflammation...
2017: PloS One
https://www.readbyqxmd.com/read/28087575/treating-inflammation-and-infection-in-the-21st-century-new-hints-from-decoding-resolution-mediators-and-mechanisms
#18
REVIEW
Charles N Serhan
Practitioners of ancient societies from the time of Hippocrates and earlier recognized and treated the signs of inflammation, heat, redness, swelling, and pain with agents that block or inhibit proinflammatory chemical mediators. More selective drugs are available today, but this therapeutic concept has not changed. Because the acute inflammatory response is host protective to contain foreign invaders, much of today's pharmacopeia can cause serious unwanted side effects, such as immune suppression. Uncontrolled inflammation is now considered pathophysiologic and is associated with many widely occurring diseases such as cardiovascular disease, neurodegenerative diseases, diabetes, obesity, and asthma, as well as classic inflammatory diseases (e...
April 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28087294/bioactive-metabolites-of-docosahexaenoic-acid
#19
REVIEW
Ondrej Kuda
Docosahexaenoic acid (DHA) is an essential fatty acid that is recognized as a beneficial dietary constituent and as a source of the anti-inflammatory specialized proresolving mediators (SPM): resolvins, protectins and maresins. Apart from SPMs, other metabolites of DHA also exert potent biological effects. This article summarizes current knowledge on the metabolic pathways involved in generation of DHA metabolites. Over 70 biologically active metabolites have been described, but are often discussed separately within specific research areas...
May 2017: Biochimie
https://www.readbyqxmd.com/read/28079976/maresin-1-induces-a-novel-pro-resolving-phenotype-in-human-platelets
#20
K L Lannan, S L Spinelli, N Blumberg, R P Phipps
Essentials Specialized proresolving mediators (SPMs) promote the resolution of inflammation. This study sought to investigate the effects of SPMs on human platelet function. The SPM, Maresin 1, enhanced hemostatic, but suppressed inflammatory functions of platelets. SPMs uniquely regulate platelet function and may represent a new class of antiplatelet agents. SUMMARY: Background Antiplatelet therapy is a cornerstone of modern medical practice and is routinely employed to reduce the likelihood of myocardial infarction, thrombosis and stroke...
April 2017: Journal of Thrombosis and Haemostasis: JTH
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