Title : Aspirin (ASA) regulates 5-lipoxygenase activity and peroxisome proliferator-activated receptor alpha-mediated CINC-1 release in rat liver cells: novel actions of lipoxin A4 (LXA4) and ASA-triggered 15-epi-LXA4.

Pub. Date : 2002 Dec

PMID : 12368230






11 Functional Relationships(s)
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1 Aspirin (ASA) regulates 5-lipoxygenase activity and peroxisome proliferator-activated receptor alpha-mediated CINC-1 release in rat liver cells: novel actions of lipoxin A4 (LXA4) and ASA-triggered 15-epi-LXA4. Aspirin C-X-C motif chemokine ligand 1 Rattus norvegicus
2 Aspirin (ASA) regulates 5-lipoxygenase activity and peroxisome proliferator-activated receptor alpha-mediated CINC-1 release in rat liver cells: novel actions of lipoxin A4 (LXA4) and ASA-triggered 15-epi-LXA4. Aspirin C-X-C motif chemokine ligand 1 Rattus norvegicus
3 In the current investigation, we examined the effects of ASA on COX and 5-lipoxygenase (5-LO) pathways and its impact on peroxisome proliferator-activated receptor alpha (PPARalpha) and cytokine-induced neutrophil chemoattractant-1 (CINC-1) levels in rat liver cells. Aspirin C-X-C motif chemokine ligand 1 Rattus norvegicus
4 In hepatocytes, ASA significantly inhibited PPARalpha protein expression and CINC-1 secretion, effects that were also observed in hepatocytes exposed to the selective PPARalpha agonist Wy-14643. Aspirin C-X-C motif chemokine ligand 1 Rattus norvegicus
5 In hepatocytes, ASA significantly inhibited PPARalpha protein expression and CINC-1 secretion, effects that were also observed in hepatocytes exposed to the selective PPARalpha agonist Wy-14643. pirinixic acid C-X-C motif chemokine ligand 1 Rattus norvegicus
6 In contrast, treatment of hepatocytes with PGE2 in association with LTB4 had no significant effect on PPARalpha but stimulated CINC-1 release. Dinoprostone C-X-C motif chemokine ligand 1 Rattus norvegicus
7 Interestingly, the endogenous antiinflammatory eicosanoids LXA4 and ASA-triggered 15-epi-LXA4, in addition to inhibiting macrophage 5-LO activity to a similar extent as PGE2, significantly reduced PPARalpha and CINC-1 levels in hepatocytes. Eicosanoids C-X-C motif chemokine ligand 1 Rattus norvegicus
8 Interestingly, the endogenous antiinflammatory eicosanoids LXA4 and ASA-triggered 15-epi-LXA4, in addition to inhibiting macrophage 5-LO activity to a similar extent as PGE2, significantly reduced PPARalpha and CINC-1 levels in hepatocytes. lipoxin A4 C-X-C motif chemokine ligand 1 Rattus norvegicus
9 Interestingly, the endogenous antiinflammatory eicosanoids LXA4 and ASA-triggered 15-epi-LXA4, in addition to inhibiting macrophage 5-LO activity to a similar extent as PGE2, significantly reduced PPARalpha and CINC-1 levels in hepatocytes. Aspirin C-X-C motif chemokine ligand 1 Rattus norvegicus
10 Interestingly, the endogenous antiinflammatory eicosanoids LXA4 and ASA-triggered 15-epi-LXA4, in addition to inhibiting macrophage 5-LO activity to a similar extent as PGE2, significantly reduced PPARalpha and CINC-1 levels in hepatocytes. lipoxin A4 C-X-C motif chemokine ligand 1 Rattus norvegicus
11 Taken together and because arachidonic acid-derived products, PPARalpha levels, and CINC-1 secretion are involved in the extent and duration of an inflammatory response, these findings provide additional molecular mechanisms for the pharmacological properties of ASA. Aspirin C-X-C motif chemokine ligand 1 Rattus norvegicus