Prostaglandin E2 (PGE2) is induced in vivo by bacterial products including TLR agonists. To determine whether PGE2 is induced directly or via IL-1β, human monocytes and macrophages were cultured with LPS or with Pam3CSK4 in presence of caspase-1 inhibitor, ZVAD, or IL-1R antagonist, Kineret. TLR agonists induced PGE2 in macrophages exclusively via IL-1β-independent mechanisms. In contrast, ZVAD...

In view of the eminently important role of interleukin-2 (IL-2) in T-cell responses, and in view of reports about immune stimulatory effects of PGE2, we reinvestigated the question whether PGE2 inhibits IL-2 production. It was found that PGE2 does not inhibit IL-2 production in murine spleen cell cultures after optimal stimulation (5 micrograms/ml concanavalin A) but does inhibit at suboptimal ...

oxymatrine, a potent monosomic alkaloid extracted from chinese herb sophora japonica (sophora flavescens ait.). possesses anti-inflammatory activittyes.  this study was designed to investigate the effects of oxymatrine on nuclear factor–kappa b (nf-κb) and mitogen-activated protein kinase (mapk)-dependent inflammatory responses in lipopolysaccharide (lps)-activated microglia. in this paper, bv2...

The objectives of this study were to explore whether heparin-binding proteins, separated by fast protein liquid chromatography from boar seminal plasma influence the release of prostaglandins F2α, (PGF2α), E2 (PGE2) and interleukin-6 (IL-6) by porcine endometrial and cervical cells and even bovine endometrial cells. In Experiment I, we showed that release of PGF2α by endometrial epithelial, end...

Regulation of the factors governing IL-12R expression and IL-12 responsiveness has been shown to be important in the generation and stability of Th1- and Th2-type responses. In this regard, cytokines have been shown to have a prominent role in regulating IL-12R expression. In this study, the role that PGE2 and dexamethasone (DXM) have in regulating IL-12R expression was evaluated. Addition of P...

Dendritic cells (DC) have the potential to instigate a tumour-specific immune response, but their ability to prime naïve lymphocytes depends on their activation status. Thus, for tumour immunotherapy to be effective, the provision of appropriate DC activation stimuli such as Toll-like receptor (TLR) agonists is crucial in order to overcome immunosuppression associated with the tumour microenvir...

OBJECTIVE—In periodontitis, matrix metalloproteinase 3 (MMP-3, stromelysin 1) is present at increased levels in active disease sites compared to inactive or healthy sites, and the levels are correlated with clinical parameters and associated with progression of the disease. Interleukin 4 (IL-4) has been shown in other systems to suppress interleukin-1 (IL-1) induced expression of MMP-3, but thi...

the aim of this study was to test the therapeutic efficacy of sodium alginate in a rat model of trinitrobenzene sulfonic acid (tnbs)-induced inflammatory bowel disease. this experiment was carried out using 77 sprague-dawley rats which were divided into six groups; normal, control, prophylactic, therapeutic and two experimental groups. rats were sacrificed 1, 2, 3 and 6 weeks after colitis indu...

AIM To test whether exacerbated gingival inflammation in pregnancy is associated with increased salivary hormone levels and changes in gingival crevicular fluid (GCF) interleukin-1beta (IL-1beta) and prostaglandin-E2 (PGE2) levels. MATERIAL AND METHODS In this cohort study, 48 pregnant women without periodontitis were evaluated in the first, second, and third trimesters and at 3 months postpa...