leukocyte

Andrograpanin (19-HYDROXY-8(17),13-LABDADIEN-16,15-OLIDE) is a bioactive compound from Andrographis paniculata. Andrograpanin has anti-inflammatory and anti-infectious properties.

Leukotriene C4 (LTC4) is an arachidonate lipid mediator that regulates leukocyte recruitment and function at sites of inflammation.Leukotriene C4 is a mediator of bronchoconstriction, mucus hypersecretion, and eosinophilia, and has a mediating role in urticaria.

Pentoxifylline (PTX) modulates immunologic activity by stimulating cytokine production. Pentoxifylline is a methylxanthine derivative that inhibits phosphodiesterase and affects blood rheology. It also inhibits platelet aggregation and improves blood flow by increasing erythrocyte and leukocyte flexibility.

N-Acetylneuraminic acid (Acide aceneuramique) is a nine-carbon sialic acid monosaccharide commonly found in glycoproteins on cell membranes and in glycolipids such as gangliosides in mammalian cells. Studies have shown that N-Acetylneuraminic acid is biologically useful for neurotransmission, leukocyte extravasation, viral or bacterial infections, and carbohydrate-protein recognition.

Auraptene is a coumarin derived from citrus plants that bears a geranyloxyl moiety at its C-7. It has anti-inflammatory, anti-carcinogenic, anti-bacterial, neuroprotective, and hepatoprotective activities. It inhibits leukocyte activation and induces phas

1. Peimisine (Ebeiensine) can affect M-receptor, excit β-receptor, restrain the release of internal calcium, and promote to releaseing nitrogen monoxidum in order to relax tracheal smooth muscle and relieve asthma. 2. Peimisine can attenuate lung tissue injury( ALI), LDH and MDA amount in ALI mice in a dose dependent manner, it also lower the total protein, total white blood cells, lymphocyte and neutrophilic leukocyte in bronchoalveolar lavage fluid( BALF); suggests that peimisine can play a protective role against LPS-induced acute lung injury. 3. Peimisine has the protective effect on the experimental hepatic fibrosis formation, the possible mechanisms are associated with inhibiting fibrogenesis and fibrosis accumulation, and decreasing lipid peroxidation. 4. Peimisine can inhibit angiotensin I converting enzyme activity in a dose-dependent manner, displaying 5 % inhibitory concentration values of 526.5 microM, thus, it may have antihypertensive action.

Resolvin E1 is an effective endogenous pro-resolving mediator of inflammation. Resolvin E1 has unique counterregulatory actions that inhibit PMN transendothelial migration. Resolvin E1 also acts as an effective inhibitor of leukocyte infiltration, dendrit

Texasin is a selective inhibitor of human leukocyte 5-lipoxygenase.

Bruceine B, a potent inhibitor of leukocyte-endothelial cell adhesion, may have anti-inflammatory activity, it can inhibit neutrophil adhesion to lipopolysaccharide-stimulated HUVEC and T cell adhesion to TNF-stimulated HUVEC.

1. Ruscogenin has anti-inflammatory activity, suppressed zymosan A-evoked peritoneal total leukocyte migration in mice in a dose-dependent manner, 2. Ruscogenin inhibited adhesion of leukocytes to a human umbilical vein endothelial cell line (ECV34) injured by tumor necrosis factor-alpha (TNF-alpha) in a concentration-dependent manner. 3. Ruscogenin significantly attenuate LPS-induced acute lung injury via inhibiting expressions of TF and iNOS and NF-kappa B p65 activation.

erythro-Guaiacylglycerol-beta-O-4'-dehydrodisinapyl ether is a compound extracted from Brazilian rubber seed hulls and is an inhibitory activity against human leukocyte elastase (IC50 : 171 umol L).

Torilin is an inhibitor of testosterone 5 alpha-reductase, it (IC50 = 31.7 + - 4.23 microM) shows a stronger inhibition of 5 alpha-reductase than alpha-linolenic acid (IC50 = 160.3 + - 24.62 microM) but is weaker than finasteride (IC50 = 0.38 + - 0.06 microM). Torilin has immunomodulatory, hepatoprotective, and anti-inflammatory properties, it inhibits inflammation by limiting TAK1-mediated MAP kinase and NF-κB activation, it can attenuate arthritis severity, modify leukocyte activations in dLNs or joints, and restore serum and splenocyte cytokine imbalances. Torilin inhibits melanin production in alpha-melanocyte stimulating hormone-activated B16 melanoma cells, with an IC(50) value of 25 microM. Torilin shows excellent antimicrobial activity against Bacillus subtilis ATCC 6633 spores and vegetative cells. Torilin has a potent anti-angiogenic activity both in vivo and in vitro, and it may have a strong activity to suppress tumorigenesis by inhibition of tumor invasion, it reverses multidrug-resistance in cancer cells, it can potentiate the cytotoxicities of adriamycin, vinblastine, taxol and colchicine against multidrug-resistant KB-V1 and MCF7 ADR cells.

Illudalic acid, a potent and selective Leukocyte antigen-related (LAR) phosphatase inhibitor, has an IC 50 value of 1.30 µM. It inhibits LAR phosphatase by covalently binding to the catalytic cysteine residue [1] [2].

Thiotaurine is a metabolite of Cystine. It serves as a sulfur donor and may participate in the activation of neutrophils and leukocyte energy metabolism by regulating the activity of GAPDH. Additionally, Thiotaurine is a potential anti-inflammatory and immunomodulatory agent.