nordihydroguaiaretic acid/dental caries

We studied the effect of lipoxygenase inhibitors nordihydroguaiaretic acid (NDGA) and fungus Lecanicillum lecanii extract on lymphatic leukemia P388 cells. The cells grown in the abdominal cavity of DBA2 mice for 7 days were transferred into a nutrient medium. The effect of lipoxygenase inhibitors

Immunoisolation such as alginate-poly-L-lysine-alginate (APA) microencapsulation may protect entrapped islet graft cells from destruction by cellular and humoral immunities, but cannot avoid aggregation of macrophages and fibroblasts around microcapsules, which has been known to cause late

Free radicals are involved in several diseases, including cancer, central nervous system alterations and inflammatory pathologies. Peroxidase is an oral enzyme implicated in the defence of oral cavity. It has been determined that flavonoids and lignans possess antioxidant and free radical scavenging

The N-substituted quinolylmethoxyphenylamines, ETH603, ETH615 and ETH647, inhibited the formation of LTB4 in rat peritoneal leukocytes, human peripheral polymorphonuclear leukocytes and canine whole blood. In rat and human cells, the compounds also inhibited the formation of 5-HETE and stimulated

The effects of AL-3264, which exhibits a 5-lipoxygenase (5-LO) inhibiting property by blocking histamine H1-receptors and inhibition of histamine release, were examined on leukotriene (LT) production and LT-mediated responses. AL-3264 (1-30 microM) inhibited the A23,187-induced LT production from

Mast cell amines, platelet-activating factor (PAF), thromboxanes and leukotrienes have been shown to be released during nitric oxide-synthase inhibition in the rat intestine. Mast cells in rat isolated omentum (OMCs) or isolated from the rat peritoneal cavity (PMCs) have been used here to

Interleukin-1 (IL-1) mediates a number of proinflammatory biological responses that are thought to contribute to antibacterial resistance. In the present study we examined the ability of IL-1 to recruit inflammatory neutrophils and mononuclear phagocytes in vivo; a function that has been reported to

Collagenolytic activity in ovarian follicles was previously demonstrated by using synthetic peptides and reconstituted collagen fibers. However, attempts to demonstrate degradation of ovarian collagen and to correlate collagenase activity with ovulation were not successful. By administration of

Lipoxygenases (LOXs) are a group of enzymes involved in the oxygenation of polyunsaturated fatty acids. Among these 5-lipoxygenase (5-LOX) is the key enzyme leading to the formation of pharmacologically important leukotrienes and lipoxins, the mediators of inflammatory and allergic disorders. In

A delayed-type inflammatory response was evoked in mice using concanavalin A (Con A) as a stimulus, and the effect of various anti-inflammatory agents on the inflammation was examined. The intraperitoneal injection of Con A in the mouse resulted in the marked accumulation of leukocytes, especially

Phospholipase C (PLC) from Pseudomonas aeruginosa induced a marked inflammatory response when injected intraperitoneally in C3H/HeJ mice. This inflammation was characterized by the accumulation of inflammatory cells and plasma protein and the release of arachidonic acid metabolites

Clostridium difficile produces a potent enterotoxin and cytotoxin, toxins A and B, respectively, which appear to be responsible for pseudomenbranous colitis and antibiotic-associated diarrhea. In the present study we explored the neutrophil migration evoked by toxin A in the peritoneal cavities and