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Inhibition of the sphingosine-1-phosphate pathway promotes the resolution of neutrophilic inflammation.

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Sphingosine-1-phosphate (S1P) is an important sphingolipid derived from plasma membrane and has a known role in productive phase of inflammation, but its role in neutrophil survival and resolution phase of inflammation is unknown. Here, we investigated the effects of inhibition of S1P receptors and

Pseudomonas-derived ceramidase induces production of inflammatory mediators from human keratinocytes via sphingosine-1-phosphate.

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Ceramide is important for water retention and permeability barrier functions in the stratum corneum, and plays a key role in the pathogenesis of atopic dermatitis (AD). A Pseudomonas aeruginosa-derived neutral ceramidase (PaCDase) isolated from a patient with AD was shown to effectively degrade

Sphingosine-1-phosphate in chronic intestinal inflammation and cancer.

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Sphingosine-1-phosphate (S1P), a pleiotropic bioactive lipid mediator, and the kinase that produces it have now emerged as key regulators of numerous cellular processes involved in inflammation and cancer. Here, we review the importance of S1P in colitis and colitis-associated cancer (CAC) and

Sphingosine-1-phosphate in inflammatory bowel disease and colitis-associated colon cancer: the fat's in the fire.

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Colitis-associated colon cancer (CAC) is a pathological condition defined by the development of colon cancer in patients afflicted by Crohn's disease (CD) or ulcerative colitis (UC), two idiopathic diseases of the gut which together comprise the disease group called inflammatory bowel disease (IBD).

Anti-inflammatory effects of sphingosine kinase modulation in inflammatory arthritis.

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Sphingosine kinase (SphK) is a key enzyme in the sphingolipid metabolic pathway responsible for phosphorylating sphingosine into sphingosine-1-phosphate (S1P). SphK/S1P play a critical role in angiogenesis, inflammation, and various pathologic conditions. Recently, S1P(1) receptor was found to be

Sphingosine 1-phosphate/sphingosine 1-phosphate receptor 1 signaling in rheumatoid synovium: regulation of synovial proliferation and inflammatory gene expression.

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OBJECTIVE Sphingosine 1-phosphate (S1P) is involved in various pathologic conditions and has been implicated as an important mediator of angiogenesis, inflammation, cancer, and autoimmunity. This study was undertaken to examine the role of S1P/S1P1 signaling in the pathogenesis of rheumatoid

Targeted role for sphingosine-1-phosphate receptor 1 in cerebrovascular integrity and inflammation during acute ischemic stroke

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Endothelial sphingosine-1-phosphate receptors are emerging as relevant therapeutic targets during acute ischemic stroke (AIS). Physiologically, the cerebrovascular endothelium plays a vital role in maintaining barrier integrity and cerebrovascular homeostasis. During a cerebral ischemic event,

The selective sphingosine 1-phosphate receptor 1 agonist ponesimod protects against lymphocyte-mediated tissue inflammation.

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Lymphocyte exit from lymph nodes and their recirculation into blood is controlled by the sphingolipid sphingosine 1-phosphate (S1P). The cellular receptor mediating lymphocyte exit is S1P(1), one of five S1P receptors. Nonselective agonists for S1P receptors lead to blood lymphocyte count reduction.

Inhibitory role of sphingosine 1-phosphate receptor 2 in macrophage recruitment during inflammation.

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Macrophage recruitment to sites of inflammation is an essential step in host defense. However, the mechanisms preventing excessive accumulation of macrophages remain relatively unknown. The lysophospholipid sphingosine 1-phosphate (S1P) promotes T and B cell egress from lymphoid organs by acting on

CD40 Enhances Sphingolipids in Orbital Fibroblasts: Potential Role of Sphingosine-1-Phosphate in Inflammatory T-Cell Migration in Graves' Orbitopathy.

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UNASSIGNED Graves' orbitopathy (GO) is an autoimmune orbital disorder associated with Graves' disease caused by thyrotropin receptor autoantibodies. Orbital fibroblasts (OFs) and CD40 play a key role in disease pathogenesis. The bioactive lipid sphingosine-1-phosphate (S1P) has been implicated in

Modulation of chemokines and allergic airway inflammation by selective local sphingosine-1-phosphate receptor 1 agonism in lungs.

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Sphingosine-1-phosphate and its receptors have emerged as important modulators of the immune response. The sphingosine-1-phosphate prodrug 2-amino-2-(2-[4-octylphenyl]ethyl)-1,3-propanediol (FTY720) can alleviate experimental allergic airway inflammation. Nevertheless, the role of individual

Impact of sphingosine kinase 2 deficiency on the development of TNF-alpha-induced inflammatory arthritis.

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Sphingolipids are components of the plasma membrane whose metabolic manipulation is of interest as a potential therapeutic approach in a number of diseases. Sphingosine kinase 1 (SphK1), the major kinase that phosphorylates sphingosine to sphingosine-1-phosphate (S1P), was previously shown by our

Sphingosine kinase 2 is a negative regulator of inflammatory macrophage activation.

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Sphingosine kinases (SPHK) generate the sphingolipid sphingosine-1-phosphate, which, among other functions, is a potent regulator of inflammation. While SPHK1 produces S1P to promote inflammatory signaling, the role of SPHK2 is unclear due to divergent findings in studies utilizing gene depletion

Relevance and potential of sphingosine-1-phosphate in vascular inflammatory disease.

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The typical pathological feature of atherosclerosis is inflammation. In the last years, it has become evident that inhibition of inflammation is one important therapeutic option in atherosclerosis. Recently, sphingolipid sphingosine-1-phosphate (S1P) was identified as a crucial molecule with potent

Anti-inflammatory activity of a new sphingosine derivative and cembrenoid diterpene (lobohedleolide) isolated from marine soft corals of Sinularia crassa TIXIER-DURIVAULT and Lobophytum species of the Andaman and Nicobar Islands.

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The aim of this study is to determine the anti-inflammatory activity of a new sphingosine derivative (1) and cembrenoid diterpene (lobohedleolide) (2) isolated from the soft corals of Sinularia crassa and Lobophytum species respectively, collected on the coasts of Andaman and Nicobar Islands. The

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