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https://www.readbyqxmd.com/read/28919798/comparative-effects-of-the-%C3%AF-3-polyunsaturated-fatty-acid-derivatives-resolvins-e1-and-d1-and-protectin-dx-in-models-of-inflammation-and-pain
#1
Flávia Cs Fonseca, Ricardo M Orlando, Regina Mm Turchetti-Maia, Janetti Nogueira de Francischi
PURPOSE: Specialized pro-resolving lipid mediators (SPMs), also known as lipoxins, resolvins (Rvs), protectins and maresins, have been implicated in the resolution of the inflammatory process. However, a systematic comparison of their activity in the relief of inflammation and pain models is still lacking. MATERIALS AND METHODS: The effects of Rvs E1 and D1 and protectin DX (PDX) were assessed in rat paws inflamed by the standard proinflammatory stimulus carrageenan or by histamine, 5-hydroxytryptamine, substance P or prostaglandin E2...
2017: Journal of Inflammation Research
https://www.readbyqxmd.com/read/28900017/omega-3-fatty-acids-and-inflammatory-processes-from-molecules-to-man
#2
REVIEW
Philip C Calder
Inappropriate, excessive or uncontrolled inflammation contributes to a range of human diseases. Inflammation involves a multitude of cell types, chemical mediators and interactions. The present article will describe nutritional and metabolic aspects of omega-6 (n-6) and omega-3 (n-3) fatty acids and explain the roles of bioactive members of those fatty acid families in inflammatory processes. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are n-3 fatty acids found in oily fish and fish oil supplements...
September 12, 2017: Biochemical Society Transactions
https://www.readbyqxmd.com/read/28895586/maresin-1-mitigates-liver-steatosis-in-ob-ob-and-diet-induced-obese-mice
#3
L M Laiglesia, S Lorente-Cebrián, L Martínez-Fernández, N Sáinz, P L Prieto-Hontoria, M A Burrell, C M Rodríguez-Ortigosa, J A Martínez, M J Moreno-Aliaga
BACKGROUND/OBJECTIVES: The aim of this study was to characterize the effects of Maresin 1 (MaR1) in obesity-related liver steatosis and the mechanisms involved. METHODS: MaR1 effects on fatty liver disease were tested in ob/ob (2-10 μg/kg i.p., 20 days) and in diet-induced obese (DIO) mice (2 μg/kg, i.p., or 50 μg/kg, oral gavage for 10 days), as well as in cultured hepatocytes. RESULTS: In ob/ob mice, MaR1 reduced liver triglycerides (TG) content, fatty acid synthase (FAS) and stearoyl-CoA desaturase-1 protein expression, while increased acetyl-CoA carboxylase (ACC) phosphorylation and LC3II protein expression, in parallel with a drop in p62 levels...
September 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28802833/new-pro-resolving-n-3-mediators-bridge-resolution-of-infectious-inflammation-to-tissue-regeneration
#4
REVIEW
Charles N Serhan, Nan Chiang, Jesmond Dalli
While protective, the acute inflammatory response when uncontrolled can lead to further tissue damage and chronic inflammation that is now widely recognized to play important roles in many commonly occurring diseases, such as cardiovascular disease, neurodegenerative diseases, metabolic syndrome, and many other diseases of significant public health concern. The ideal response to initial challenges of the host is complete resolution of the acute inflammatory response, which is now recognized to be a biosynthetically active process governed by specialized pro-resolving mediators (SPM)...
September 1, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28768719/the-specialized-pro-resolving-lipid-mediator-maresin-1-protects-hepatocytes-from-lipotoxic-and-hypoxia-induced-endoplasmic-reticulum-stress
#5
Bibiana Rius, Marta Duran-Güell, Roger Flores-Costa, Cristina López-Vicario, Aritz Lopategi, José Alcaraz-Quiles, Mireia Casulleras, Juan José Lozano, Esther Titos, Joan Clària
Endoplasmic reticulum (ER) stress and activation of the unfolded protein response (UPR) are hallmarks of nonalcoholic fatty liver disease (NAFLD), which is the hepatic manifestation of the metabolic syndrome associated with obesity. The specialized pro-resolving lipid mediator maresin 1 (MaR1) preserves tissue homeostasis by exerting cytoprotective actions, dampening inflammation, and expediting its timely resolution. Here, we explored whether MaR1 protects liver cells from lipotoxic and hypoxia-induced ER stress...
August 2, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28765512/a-cluster-of-immunoresolvents-links-coagulation-to-innate-host-defense-in-human-blood
#6
Paul C Norris, Stephania Libreros, Nan Chiang, Charles N Serhan
Blood coagulation is a protective response that prevents excessive bleeding upon blood vessel injury. We investigated the relationship between coagulation and the resolution of inflammation and infection by lipid mediators (LMs) through metabololipidomics-based profiling of human whole blood (WB) during coagulation. We identified temporal clusters of endogenously produced prothrombotic and proinflammatory LMs (eicosanoids), as well as specialized proresolving mediators (SPMs). In addition to eicosanoids, a specific SPM cluster was identified that consisted of resolvin E1 (RvE1), RvD1, RvD5, lipoxin B4, and maresin 1, each of which was present at bioactive concentrations (0...
August 1, 2017: Science Signaling
https://www.readbyqxmd.com/read/28752333/significance-of-long-chain-polyunsaturated-fatty-acids-in-human-health
#7
REVIEW
Rafael Zárate, Nabil El Jaber-Vazdekis, Noemi Tejera, José A Pérez, Covadonga Rodríguez
In the last decades, the development of new technologies applied to lipidomics has revitalized the analysis of lipid profile alterations and the understanding of the underlying molecular mechanisms of lipid metabolism, together with their involvement in the occurrence of human disease. Of particular interest is the study of omega-3 and omega-6 long chain polyunsaturated fatty acids (LC-PUFAs), notably EPA (eicosapentaenoic acid, 20:5n-3), DHA (docosahexaenoic acid, 22:6n-3), and ARA (arachidonic acid, 20:4n-6), and their transformation into bioactive lipid mediators...
December 2017: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/28751936/maresin-1-ameliorates-lung-ischemia-reperfusion-injury-by-suppressing-oxidative-stress-via-activation-of-the-nrf-2-mediated-ho-1-signaling-pathway
#8
Quanchao Sun, You Wu, Feng Zhao, Jianjun Wang
Lung ischemia/reperfusion (I/R) injury occurs in various clinical conditions and heavily damaged lung function. Oxidative stress reaction and antioxidant enzymes play a pivotal role in the etiopathogenesis of lung I/R injury. In the current study, we investigated the impact of Maresin 1 on lung I/R injury and explored the possible mechanism involved in this process. MaR 1 ameliorated I/R-induced lung injury score, wet/dry weight ratio, myeloperoxidase, tumor necrosis factor, bronchoalveolar lavage fluid (BALF) leukocyte count, BALF neutrophil ratio, and pulmonary permeability index levels in lung tissue...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28736517/resolution-of-cochlear-inflammation-novel-target-for-preventing-or-ameliorating-drug-noise-and-age-related-hearing-loss
#9
REVIEW
Gilda M Kalinec, Gwen Lomberk, Raul A Urrutia, Federico Kalinec
A significant number of studies support the idea that inflammatory responses are intimately associated with drug-, noise- and age-related hearing loss (DRHL, NRHL and ARHL). Consequently, several clinical strategies aimed at reducing auditory dysfunction by preventing inflammation are currently under intense scrutiny. Inflammation, however, is a normal adaptive response aimed at restoring tissue functionality and homeostasis after infection, tissue injury and even stress under sterile conditions, and suppressing it could have unintended negative consequences...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28732558/resolvins-as-proresolving-inflammatory-mediators-in-cardiovascular-disease
#10
Xavier Capó, Miquel Martorell, Carla Busquets-Cortés, Silvia Tejada, Josep A Tur, Antoni Pons, Antoni Sureda
Cardiovascular disease (CVD) represents a global burden with a prevalence that continues increasing progressively. CVD comprises a group of disorders of the heart and blood vessels including coronary heart disease, cerebrovascular disease and peripheral arterial disease. This group of disorders is associated with an inflammatory process which can participate in the pathophysiology of these diseases. Inflammation resolution is an active process involving the participation of pro-resolving mediators such as lipoxins, resolvins, protectins and maresins...
July 13, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28721338/is-aortic-aneurysm-preventable
#11
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
#12
Laura M Laiglesia, Silvia Lorente-Cebrián, Miguel López-Yoldi, Raquel Lanas, Neira Sáinz, J Alfredo Martínez, Maria J Moreno-Aliaga
Obesity is associated with high levels of pro-inflammatory cytokines such as 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 in 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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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