(+)-Guaiacin is a compound isolated from the bark of Machilus wangchiana Chun. It shows potent in vitro activities against the release of β-glucuronidase in rat polymorphonuclear leukocytes (PMNs) induced by platelet-activating factor (PAF).
Alclometasone (7a-Chloro-16a-methyl prednisolone), a glucocorticoid, inhibits leukocytes from releasing pro-inflammatory mediators. It is effective in treating corticosteroid-responsive dermatoses such as atopic dermatitis, psoriasis, allergic dermatitis, and eczema [1].
LY 178002 is an effective inhibitor of 5-lipoxygenase (5-LPO), phospholipase A2 (IC50: 0.6 μM for 5-lipoxygenase). LY 178002 also inhibits cellular production of LTB4 by human polymorphonuclear leukocytes and displays relatively weak inhibition on cycloox
Diacetylsplenopentin HCl is used as a synthetic immunomodulator that affects the proliferation and differentiation of bone marrow stem cells without stimulating pathological immune responses beyond the balance of the immune system. This effect is specific
Gea 3162 is a potent inhibitor of ADP-induced platelet aggregation in platelet rich plasma (PRP). GEA 3162 stimulates cGMP production in granulocytes, platelets, and polymorphonuclear leukocytes.
(±)11(12)-EET is a fully racemic version of the R S enantiomeric forms biosynthesized from arachidonic acid by cytochrome P450 enzymes.[1][2][3[]A higher proportion of 11(R),12(S)-EET is produced by the CYP450 isoforms CYP2C23 and CYP2C24 while CYP2B2 produces a higher proportion of 11(S),12(R)-EET.[3]11(12)-EET has been shown, along with 8(9)-EET to play a role in the recovery of depleted calcium pools in cultured smooth muscle cells[4] It also inhibits basolateral 18-pS potassium channels in the renal cortical collecting duct when used at a concentration of 100 nM.[5]11(12)-EET (50 μg kg per day) increases adhesion of isolated peripheral blood leukocytes in a chamber coated with P-selectin and ICAM-1 but does not affect choroidal neovascularization size following laser photocoagulation[6] It also has anti-inflammatory, angiogenic, and cardioprotective properties[7]
PMX-205 is a cyclic hexapeptide that acts as a potent antagonist of C5a receptor (C5aR; IC50= 31 nM).1It is orally active and blocks inflammatory signaling and symptoms in animal models of colitis and allergic asthma.2,3PMX-205 is also brain penetrant and reduces neuroinflammation and neurodegeneration in an animal model of Alzheimer's disease.4 1.March, D.R., Proctor, L.M., Stoermer, M.J., et al.Potent cyclic antagonists of the complement C5a receptor on human polymorphonuclear leukocytes. Relationships between structures and activityMol. Pharmacol.65(4)868-879(2004) 2.Jain, U., Woodruff, T.M., and Stadnyk, A.W.The C5a receptor antagonist PMX205 ameliorates experimentally induced colitis associated with increased IL-4 and IL-10Br. J. Pharmacol.168(2)488-501(2013) 3.Staab, E.B., Sanderson, S.D., Wells, S.M., et al.Treatment with the C5a receptor/CD88 antagonist PMX205 reduces inflammation in a murine model of allergic asthmaInt. Immunopharmacol.21(2)293-300(2014) 4.Fonseca, M.I., Ager, R.R., Chu, S.-H., et al.Treatment with a C5aR antagonist decreases pathology and enhances behavioral performance in murine models of Alzheimer's diseaseJ. Immunol.183(2)1375-1383(2009)
Resolvin E2 (RvE2) is a member of the specialized pro-resolving mediator (SPM) family of bioactive lipids.1It is produced from eicosapentaenoic acidviaan 18-HEPE intermediate, which is formed by aspirin-acetylated COX-2-mediated oxidation of EPA, by 5-lipoxygenase (5-LO) in human polymorphonuclear (PMN) neutrophils.2,3RvE2 (20 ng/animal) inhibits increases in inflammatory exudate neutrophil infiltration in a mouse model of peritonitis induced by zymosan A .3Hepatic RvE2 levels are increased in mice fed normal chow, as well as in a mouse model of high-fat diet-induced non-alcoholic fatty liver disease (NAFLD), by dietary supplementation with EPA.4Plasma levels of RvE2 are increased by dietary supplementation with fish oil containing ω-3 polyunsaturated fatty acids (PUFAs) in patients with peripheral artery disease or chronic kidney disease.1,5,6 1.Chiang, N., and Serhan, C.N.Specialized pro-resolving mediator network: An update on production and actionsEssays Biochem.64(3)443-462(2020) 2.Tjonahen, E., Oh, S.F., Siegelman, J., et al.Resolvin E2: Identification and anti-inflammatory actions: Pivotal role of human 5-lipoxygenase in resolvin E series biosynthesisChemistry & Biology131193-1202(2006) 3.Sungwhan, F.O., Pillai, P.S., Recchiuti, A., et al.Pro-resolving actions and stereoselective biosynthesis of 18S E-series resolvins in human leukocytes and murine inflammationJ. Clin. Invest.121(2)569-581(2011) 4.Echeverría, F., Valenzuela, R., Espinosa, A., et al.Reduction of high-fat diet-induced liver proinflammatory state by eicosapentaenoic acid plus hydroxytyrosol supplementation: Involvement of resolvins RvE1/2 and RvD1/2J. Nutr. Biochem.6335-43(2019) 5.Ramirez, J.L., Gasper, W.J., Khetani, S.A., et al.Fish oil increases specialized pro-resolving lipid mediators in PAD (the OMEGA-PAD II trial)J. Surg. Res.238164-174(2019) 6.Barden, A.E., Shinde, S., Burke, V., et al.The effect of n-3 fatty acids and coenzyme Q10 supplementation on neutrophil leukotrienes, mediators of inflammation resolution and myeloperoxidase in chronic kidney diseaseProstaglandins Other Lipid Mediat.1361-8(2018)