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https://www.readbyqxmd.com/read/28218740/maresin1-stimulates-alveolar-fluid-clearance-through-the-alveolar-epithelial-sodium-channel-na-k-atpase-via-the-alx-pi3k-nedd4-2-pathway
#1
Jun-Li Zhang, Xiao-Jun Zhuo, Jing Lin, Ling-Chun Luo, Wei-Yang Ying, Xiang Xie, Hua-Wei Zhang, Jing-Xiang Yang, Dan Li, Fang Gao Smith, Sheng-Wei Jin
Maresin1 (MaR1) is a new docosahexaenoic acid-derived pro-resolving agent that promotes the resolution of inflammation. In this study, we sought to investigate the effect and underlining mechanisms of MaR1 in modulating alveolar fluid clearance (AFC) on LPS-induced acute lung injury. MaR1 was injected intravenously or administered by instillation (200 ng/kg) 8 h after LPS (14 mg/kg) administration and AFC was measured in live rats. In primary rat alveolar type II epithelial cells, MaR1 (100 nM) was added to the culture medium with lipopolysaccharide for 6 h...
February 20, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28218420/plasma-lipoxin-a4-and-resolvin-d1-are-not-associated-with-reduced-adenoma-risk-in-a-randomized-trial-of-aspirin-to-prevent-colon-adenomas
#2
Veronika Fedirko, Gail McKeown-Eyssen, Charles N Serhan, Elizabeth L Barry, Robert S Sandler, Jane C Figueiredo, Dennis J Ahnen, Robert S Bresalier, Douglas J Robertson, Carlton W Anderson, John A Baron
Inflammation plays a major role in colon carcinogenesis. Endogenously produced specialized proresolving lipid mediators (SPMs) play a central role in inflammation and tissue homeostasis, and have been implicated in carcinogenesis. We studied the associations of plasma levels of two SPMs [lipoxin A4 (LXA4 ) and resolvin D1(RvD1)] with risk for recurrent adenoma. In this pilot study, we used data and biosamples from an adenoma chemoprevention study investigating the effects of aspirin and/or folic acid on the occurrence of colorectal adenomas...
February 20, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28210259/resolution-of-cancer-promoting-inflammation-a-new-approach-for-anticancer-therapy
#3
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/28209487/lipoxin-a4-suppresses-osteoclastogenesis-in-raw264-7-cells-and-prevents-ovariectomy-induced-bone-loss
#4
Changyu Liu, Hanfeng Guan, Cong Cai, Feng Li, Jun Xiao
Lipoxin A4 (LXA4; 5S, 6R, 15Strihydroxy- 7,9,13-trans-11-eicosatetraenoic acid) is a metabolic product of arachidonic acid under the action of lipoxidase. This lipid molecule plays important roles in several biological functions, especially inflammatory processes. In vivo, LXA4 regulates the inflammatory response through several signaling pathways. Its mechanism suggests that it might have an effect on osteoclastogenesis and bone loss. Using both in vitro and in vivo studies, it was here observed that LXA4 could significantly inhibit the formation and function of osteoclasts and these effects could be blocked by Boc-2, the specific inhibitor of FPR2/ALX (the receptor of LXA4)...
February 13, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28191524/renin-angiotensin-aldosterone-system-in-insulin-resistance-and-metabolic-syndrome
#5
Undurti N Das
Obesity and its consequent complications such as hypertension and metabolic syndrome are increasing in incidence in almost all countries. Insulin resistance is common in obesity. Renin- angiotensin system (RAS) is an important target in the treatment of hypertension and drugs that act on RAS improve insulin resistance and decrease the incidence of type 2 diabetes mellitus, explaining the close association between hypertension and type 2 diabetes mellitus. RAS influences food intake by modulating the hypothalamic expression of neuropeptide Y and orexins via AMPK dephosphorylation...
June 1, 2016: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28158236/pro-resolving-lipid-mediator-resolvin-d1-serves-as-a-marker-of-lung-disease-in-cystic-fibrosis
#6
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/28144281/lipoxin-a4-as-a-possible-mediator-of-the-beneficial-actions-of-phosphodiesterase-5-enzyme-inhibitors
#7
Undurti N Das
No abstract text is available yet for this article.
February 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28132398/modulation-of-antiphospholipid-antibodies-induced-trophoblast-damage-by-different-drugs-used-to-prevent-pregnancy-morbidity-associated-with-antiphospholipid-syndrome
#8
Angela M Alvarez, Norman Balcázar, Sebastián San Martín, Udo R Markert, Angela P Cadavid
PROBLEM: Women with antiphospholipid antibodies (aPLs) present a risk of pregnancy morbidity (PM), vascular thrombosis (VT), or both (PM/VT). aPLs affect trophoblast function, and the aim of this study was to determine the modulation of this aPL-induced damage by different drugs. METHOD OF STUDY: IgG was obtained from women with PM and PM/VT positive to aPLs. Binding of IgG to trophoblastic cells, proliferation, mitochondrial membrane integrity, and trophoblast invasion were assessed...
January 29, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28119539/inflammatory-mechanisms-in-tendinopathy-towards-translation
#9
REVIEW
Neal L Millar, George A C Murrell, Iain B McInnes
Tendinopathy is a multifactorial spectrum of tendon disorders that affects different anatomical sites and is characterized by activity-related tendon pain. These disorders are common, account for a high proportion (∼30%) of referrals to musculoskeletal practitioners and confer a large socioeconomic burden of disease. Our incomplete understanding of the mechanisms underpinning tendon pathophysiology continues to hamper the development of targeted therapies, which have been successful in other areas of musculoskeletal medicine...
January 25, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28109294/probing-the-intermolecular-interactions-of-ppar%C3%AE-lbd-with-polyunsaturated-fatty-acids-and-their-anti-inflammatory-metabolites-to-infer-most-potential-binding-moieties
#10
Shalini Muralikumar, Umashankar Vetrivel, Angayarkanni Narayanasamy, Undurti N Das
BACKGROUND: PPARγ is an isoform of peroxisome proliferator-activated receptor (PPAR) belonging to a super family of nuclear receptors. PPARγ receptor is found to play a crucial role in the modulation of lipid and glucose homeostasis. Its commotion has been reported to play a significant role in a broad spectrum of diseases such as type 2 diabetes mellitus, inflammatory diseases, Alzheimer's disease, and in some cancers. Hence, PPARγ is an important therapeutic target. Polyunsaturated fatty acids (PUFAs) and their metabolites (henceforth referred to as bioactive lipids) are known to function as agonists of PPARγ...
January 21, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28100645/lipoxin-a4-stimulates-endothelial-mir-126-5p-expression-and-its-transfer-via-microvesicles
#11
Marilina Codagnone, Antonio Recchiuti, Paola Lanuti, Anna Maria Pierdomenico, Eleonora Cianci, Sara Patruno, Veronica Cecilia Mari, Felice Simiele, Pamela Di Tomo, Assunta Pandolfi, Mario Romano
The proresolution lipid mediator lipoxin (LX)A4 bestows protective bioactions on endothelial cells. We examined the impact of LXA4 on transcellular endothelial signaling via microRNA (miR)-containing microvesicles. We report LXA4 inhibition of MV release by TNF-α-treated HUVECs, associated with the down-regulation of 18 miR in endothelial microvesicles (EMVs) and the up-regulation of miR-126-5p, both in HUVECs and in EMVs. LXA4 up-regulated miR-126-5p by ∼5-fold in HUVECs and promoted a release of microvesicles (LXA4-EMVs) that enhanced miR-126-5p by ∼7-fold in recipient HUVECs...
January 18, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28089732/alox15-as-a-suppressor-of-inflammation-and-cancer-lost-in-the-link
#12
REVIEW
Rui Tian, Xiangsheng Zuo, Jonathan Jaoude, Fei Mao, Jennifer Colby, Imad Shureiqi
Mounting evidence supports a mechanistic link between inflammation and cancer, especially colon cancer. ALOX15 (15-lipoxygenase-1) plays an important role in the formation of key lipid mediators (e.g., lipoxins and resolvins) to terminate inflammation. ALOX15 expression is downregulated in colorectal cancer (CRC). Intestinally-targeted transgenic expression of ALOX15 in mice inhibited dextran sodium sulfate-induced colitis from promoting azoxymethane- induced colorectal tumorigenesis, demonstrating that ALOX15 can suppress inflammation-driven promotion of carcinogen-induced colorectal tumorigenesis and therefore ALOX15 downregulation during tumorigenesis is likely to enhance the link between colitis and colorectal tumorigenesis...
January 12, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28087575/treating-inflammation-and-infection-in-the-21st-century-new-hints-from-decoding-resolution-mediators-and-mechanisms
#13
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...
January 13, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28079976/maresin-1-induces-a-novel-pro-resolving-phenotype-in-human-platelets
#14
Katie L Lannan, Sherry L Spinelli, Neil Blumberg, Richard P Phipps
BACKGROUND: Antiplatelet therapy is a cornerstone of modern medical practice and is routinely employed to reduce the likelihood of myocardial infarction, thrombosis, and stroke. However, current antiplatelet therapies, such as aspirin, often have adverse side effects, including increased risk of bleeding, and some patients are relatively "aspirin-resistant". Platelets are intimately involved in hemostasis and inflammation, and clinical consequences are associated with excessive or insufficient platelet activation...
January 12, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28071789/aspirin-triggered-lipoxin-a4-inhibits-atherosclerosis-progression-in-apolipoprotein-e-mice
#15
Marcelo H Petri, Andrés Laguna-Fernandez, Hildur Arnardottir, Craig E Wheelock, Mauro Perretti, Göran K Hansson, Magnus Bäck
BACKGROUND AND PURPOSE: Atherosclerosis is characterized by a chronic non-resolving inflammation in the arterial wall. Aspirin-triggered lipoxin A4 (ATL) is a potent anti-inflammatory mediator, involved in the resolution of inflammation. However, the therapeutic potential of immune targeting by means of ATL in atherosclerosis has not previously been explored. The aim of the present study was to determine the effects of ATL and its receptor Fpr2 on atherosclerosis development and progression in apolipoprotein E deficient (ApoE(-/-) ) mice...
January 10, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28060522/aspirin-and-or-omega-3-polyunsaturated-fatty-acids-protect-against-corticohippocampal-neurodegeneration-and-downregulate-lipoxin-a4-production-and-formyl-peptide-receptor-like-1-expression-in-pentylenetetrazole-kindled-rats
#16
Basma A Abd-Elghafour, Norhan M El-Sayed, Amal A M Ahmed, Sawsan A Zaitone, Yasser M Moustafa
There is evidence for a relationship between inflammation and seizures because epilepsy can be caused by or result in inflammation. This study aimed to investigate the effect of aspirin and (or) omega-3 polyunsaturated fatty acids (PUFAs) on seizure activity and neurodegeneration in pentylenetetrazole (PTZ)-kindled rats focusing on their effect on corticohippocampal production of lipoxin A4 (LXA4) and expression of formyl peptide receptor-like 1 (FPRL1) receptors. Male rats were injected with PTZ (35 mg/kg, i...
November 10, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28035464/the-lipoxin-a4-agonist-bml-111-attenuates-acute-hepatic-dysfunction-induced-by-cecal-ligation-and-puncture-in-rats
#17
Ghada S El-Tanbouly, Mohammed S El-Awady, Nermeen A Megahed, Hassan A El-Kashef, Hatem A Salem
Sepsis is a systemic inflammatory response associating severe infection leading to multi-organ failure, such as hepatic dysfunction. This study investigates the possible hepatoprotective effect of the lipoxin A4 agonist (BML-111) in cecal ligation and puncture (CLP) model in rats. Pretreatment with BML-111 (1 mg/kg, i.p., 1 h before CLP) protected against CLP-induced mortality after 24 h. BML-111 prevented marked inflammatory cells in liver tissues and decreased elevation in serum hepatic biomarkers [alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin (TB), gamma-glutamyl transferase (γ-GT)] induced by CLP...
December 29, 2016: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28002074/resolving-inflammation-by-using-nutrition-therapy-roles-for-specialized-proresolving-mediators
#18
Lucy V Norling, Lucy Ly, Jesmond Dalli
PURPOSE OF REVIEW: Inflammation is a unifying component of many of the diseases that afflict Western civilizations. Nutrition therapy and, in particular, essential fatty acid supplementation is one of the approaches that is currently in use for the treatment and management of many inflammatory conditions. The purpose of the present review is to discuss the recent literature in light of the discovery that essential fatty acids are converted by the body to a novel genus of lipid mediators, termed specialized proresolving mediators (SPMs)...
March 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/27993857/simvastatin-attenuates-endothelial-activation-through-15-epi-lipoxin-a4-production-in-murine-chronic-chagas-cardiomyopathy
#19
Fabiola González-Herrera, Allysson Cramer, Pollyana Pimentel, Christian Castillo, Ana Liempi, Ulrike Kemmerling, Fabiana S Machado, Juan D Maya
Current treatments for chronic Chagas cardiomyopathy, a disease with high mortality rates and caused by the protozoan Trypanosoma cruzi, are unsatisfactory. Myocardial inflammation, including endothelial activation, is responsible for the structural and functional damage seen in the chronic phase. The clinical efficacy of benznidazole could be improved by decreasing chronic inflammation. Statins, which have anti-inflammatory properties, may improve the action of benznidazole. Herein, the action of simvastatin in a murine model of chronic Chagas cardiomyopathy and the link with the production of the pro-resolving eicosanoid 15-epi-lipoxin A4, produced by 5-lipoxygenase, are evaluated...
December 19, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27987338/effect-of-interleukin-1%C3%AE-and-lipoxin-a4-in-human-endometriotic-stromal-cells-proteomic-analysis
#20
Rong-Feng Wu, Hui-Ming Yang, Wei-Dong Zhou, Li-Rong Zhang, Jian-Bing Bai, Dian-Chao Lin, Tai-Wei Ng, Song-Juan Dai, Qiong-Hua Chen, Qing-Xi Chen
AIM: Lipoxin A4 (LXA4 ) can function as an endogenous 'breaking signal' in inflammation and plays an important role in the progression of endometriosis. The proteome responses to interleukin-1β (IL-1β) or LXA4 in human endometriotic stromal cells (ESC) are not well understood. METHODS: In this study, primary ESC were cultured from ovarian endometriosis tissue. Three groups were established: the control group; the IL-1β stimulation group; and the IL-1β and LXA4 incubation group...
December 17, 2016: Journal of Obstetrics and Gynaecology Research
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