Sivu 1 alkaen 904 tuloksia
Objective To explore the regulatory effect of quorum sensing molecule N-3-oxodecanoyl-L-homoserine lactone (3-oxo-C10-HSL) on lipopolysaccharide (LPS)-induced inflammation in RAW264.7 macrophages. Methods RAW264.7 macrophages were divided into experimental group, control group and blank
Introduction: Mast cells are involved in not only inducing, but also maintaining neurogenic inflammation and neuropathic pain. In previous work, we have demonstrated that dehydroleucodine, xanthatin and 3-benzyloxymethyl-5H-furan-2-one
In Central America leaf extracts from the Asteraceae Tithonia diversifolia are used externally for the treatment of haematomas and wounds. Therefore, the main sesquiterpene lactones (Sls) of this species growing in Costa Rica, diversifolin (1), diversifolin methyl ether (2), and tirotundin (3), were
We have studied the activation of human blood platelets by the inflammatory and tumor-promoting sesquiterpene lactone, thapsigargin. The effect of thapsigargin was compared with other common agonists (calcium ionophore A23187, phorbol ester TPA and thrombin). Platelet aggregation, serotonin release,
The widespread use of Neurolaena lobata (L.) R. Br. ex Cass. by Q'eqchi' Maya and indigenous healers throughout the Caribbean for inflammatory conditions prompted the study of the anti-inflammatory activity of this traditional medicine. The objectives of this study were to conduct a detailed
BACKGROUND
T. diversifolia (Hemsl.) A. Gray (Asteraceae) has been used in the traditional medicine in several countries as anti-inflammatory and against other illnesses. It is important to evaluate the anti-inflammatory activity of extracts from the leaves of this species, including an infusion, to
The half-effective dose(ED50), therapeutic index(TI) and certain safety factor(CSF) of 7 diterpene lactone epoxide compounds with antiinflammatory and immunosuppressive action extracted from Tripterygium wilfordii (TW) were assayed using croton oil-induced ear swelling and hemolysin-antibody
Apoptosis is a morphologically distinct form of cell death involved in many physiological and pathological processes. The death receptor CD95 (APO-1/Fas) and its ligand (L) CD95L are critically involved in activation-induced-cell-death (AICD) of activated T-cells. Here we show that the
Eupatorium lindleyanum has traditionally been used as folk medicine in Asian countries for its therapeutic effects on tracheitis and tonsillitis. Investigation of the anti-inflammatory active constituents from E. lindleyanum led to the isolation of two novel sesquiterpene lactones, named
Five new lactones, litsenolide F1 (1), lisealactone H1 (10), lisealactone H2 (11), akolactone D (13), and akolactone E (14), along with thirteen known compounds were isolated from the pericarps of Litsea japonica (Thunb.) Jussieu. Their chemical structures were elucidated by extensive spectroscopic
Sigesbeckia orientalis, more commonly referred to as Herba Sigesbeckiae or Xi Xian Cao in traditional Chinese medicine and hy thiêm in traditional Vietnamese medicine, is used in China and Vietnam to treat inflammatory diseases such as arthritis, rheumatism, and joint pain. In initial
This paper describes the synthesis of a new A-homo lactam D-homo lactone androstane derivative from dehydroepiandrosterone. To evaluate the impact of the introduction of nitrogen in the parental scaffold on biological activity, a new androstane enamide-type lactam derivative was prepared and
Four new lanostanoids, ethyl lucidenate A (1), ethyl lucidenate F (2), 15-O-acetylganolucidate A (3), and 3,11,15,23-tetraoxo-27ξ-lanosta-8,16-dien-26-oic acid (4), and two new lactone derivatives, 5-hydroxy-5-(methoxymethyl)-4-methylfuran-2(5H)-one (5) and 3-(4-methoxy-2-oxo-2H-pyran-6-yl)propanoic
Inflammatory cytokines, such as interleukin-1α (IL-1α) and tumor necrosis factor-α (TNF-α), induce the intracellular signaling pathway leading to the activation of nuclear factor κB (NF-κB). A series of eudesmane-type sesquiterpene lactones possessing an α-methylene γ-lactone group and/or an α-bromo
Recently, we reported molecular characterization, localization and functional importance of Arabino-1, 4-lactone oxidase (ALO) enzyme from Leishmania donovani that catalyses the last step in ascorbate biosynthesis pathway. Vitamin C (l-ascorbic acid) is implicated in several crucial physiological