polymorphonuclear

L-Leucyl-L-Leucine methyl ester hydrochloride (Leu-Leu-ome hydrochloride) is a dipeptide condensation product of L-leucine methyl ester produced by human monocytes or polymorphonuclear leukocytes. L-Leucyl-L-Leucine methyl ester hydrochloride selectively eliminates lymphocytes with cytotoxic potential and also induces lysosomal stress.

Gordonoside J, a compound isolated from the stem of Chrysanthemum officinale, inhibits LPS-induced nitric oxide production in rat polymorphonuclear leukocytes (PMNS).

CJ-13,610 is an orally active and nonredox-type inhibitor of 5-lipoxygenase (5-LOX). CJ-13,610 inhibits the biosynthesis of leukotriene B4 and regulates the expression of IL-6 mRNA in macrophages.

Traxanox is an orally available diuretic.Traxanox enhances phagocytosis of yeast granules by mouse peritoneal macrophages or rat peritoneal polymorphonuclear leukocytes in vitro.Restorative effect of Traxanox on inhibition of antibody production in BALB c mice.

Traxanox TFA is an orally available diuretic. Traxanox TFA enhances phagocytosis of yeast granules by mouse peritoneal macrophages or rat peritoneal polymorphonuclear leukocytes in vitro. Traxanox TFA restores inhibition of antibody production in BALB c mice. Traxanox TFA is also effective in restoring antibody production in BALB c mice. Traxanox TFA has been shown to enhance phagocytosis in BALB c mice.

Meclofenamate sodium is a potent non-steroidal anti-inflammatory agent, which can specifically inhibit chemokine-induced human polymorphonuclear leukocyte function: chemotaxis, degranulation, and superoxide anion free radical production.

(+)-Guaiacin, isolated from the bark of Machilus wangchiana Chun, demonstrates potent in vitro inhibition of β-glucuronidase release in rat polymorphonuclear leukocytes (PMNs) induced by platelet-activating factor (PAF).

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

D-Citrulline (H-D-Cit-OH), a stereoisomer of L-citrulline, effectively reduces cardiac contractile dysfunction caused by polymorphonuclear leukocyte (PMN) in isolated perfused rat hearts undergoing ischemia reperfusion. This protective effect is mediated through a non-NO-mediated mechanism.

9-tert-Butyldoxycycline exhibits immunomodulatory activity by altering the polarization state of polymorphonuclear neutrophils and ameliorating inflammatory responses in ischemia-reperfusion injury models. Additionally, 9-tert-Butyldoxycycline serves as a ligand for the Tet-On inducible gene expression system.

HZ52 is a potent, reversible 5-lipoxygenase (5-LO) inhibitor that blocks leukotriene (LTs) synthesis with an IC50 of 0.7 μM in intact human polymorphonuclear leukocytes [1].

inhibits leukotriene B4 (LTB4)-induced polymorphonuclear neutrophils (PMN) chemotaxis

LY255283 is a specific antagonit of leukotriene B4 (LTB4) receptor. It inhibits the production of LTB(4) in human peripheral blood polymorphonuclear leukocytes (PMNL) and in monocytes activated by calcium ionophore A23187.

L 651142 is a weak inhibitor of the platelet-activating factor receptor. It is also binding to polymorphonuclear leukocytes.

L 680833 is an orally active monocyclic beta-lactam human polymorphonuclear leukocyte elastase inhibitor.

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.

Traxanox sodium is an orally available diuretic. Traxanox sodium enhances phagocytosis of yeast granules by mouse peritoneal macrophages or rat peritoneal polymorphonuclear leukocytes in vitro. Traxanox sodium restores inhibition of antibody production in BALB c mice. Traxanox sodium is also effective in restoring antibody production in BALB c mice. Traxanox sodium has been shown to enhance phagocytosis in BALB c mice.

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)

Resolvins are a family of potent lipid mediators derived from both eicosapentaenoic acid and docosahexaenoic acid.[1] In addition to being anti-inflammatory, resolvins promote the resolution of the inflammatory response back to a non-inflamed state.[2] Resolvin D1 is produced physiologically from the sequential oxygenation of DHA by 15- and 5-lipoxygenase.[1] 17(R)-RvD1 is an aspirin-triggered epimer of RvD1 that reduces human polymorphonuclear leukocyte (PMN) transendothelial migration, the earliest event in acute inflammation, with equipotency to RvD1 (EC50 = ~30 nM).[3] 17(R)-RvD1 exhibits a dose-dependent reduction in leukocyte infiltration in a mouse model of peritonitis with maximal inhibition of ~35% at a 100 ng dose.[3] In contrast to RvD1, the aspirin-triggered form resists rapid inactivation by eicosanoid oxidoreductases. Analytical and biological comparisons of synthetic 17(R)-RvD1 with endogenously derived 17(R)-RvD1 have confirmed its identity as matching the natural product.[4]

17(R)-Protectin D1 is an aspirin-triggered epimer of the specialized pro-resolving mediator protectin D1 .1It decreases leukotriene B4-induced transendothelial migration of human polymorphonuclear (PMN) neutrophils when used at concentrations ranging from 0.1 to 10 nM. 17(R)-Protectin D1 (0.01-10 ng) reduces the recruitment of neutrophils in a mouse model of TNF-α-induced peritonitis. 1.Serhan, C.N., Fredman, G., Yang, R., et al.Novel proresolving aspirin-triggered DHA pathwayChem. Biol.18(18)976-987(2011)

Leukotriene B5 (LTB5) is a metabolite of eicosapentaenoic acid formed via the 5-lipoxygenase (5-LO) pathway, possessing diverse biological activities, including the ability to increase contraction of bullfrog lung strips ex vivo in a concentration-dependent manner.

C2 Phytoceramide is a bioactive semisynthetic sphingolipid that inhibits formyl peptide-induced oxidant release (IC50 = 0.38 μM) in suspended polymorphonuclear cells. It increases COX-2 protein levels 15-fold through ERK signaling. It induces death of keratinocytes (20% viability) with an ED50 value of 30 μM, the same concentration at which 35% of cells in a TUNEL assay are apoptotic. C2 Phytoceramide also has antiproliferative effects in CHO cells, with greater than 80% cytotoxicity achieved at a concentration of 20 μM, and induces internucleosomal DNA fragmentation. In addition, it inhibits the activation of phospholipase D (PLD) mediated by muscarinic acetylcholine receptors in vitro.

H-Leu-Leu-OMe . HBr is a dipeptide condensation product of L-leucine methyl ester generated by human monocytes or polymorphonuclear leukocytes. H-Leu-Leu-OMe . HBr induces endolysosomal pathway stress and selectively eliminates lymphocytes with cytotoxic potential.