Differential regulation by fucoidan of IFN-γ-induced NO production in glial cells and macrophages.

Fucoidan has shown numerous biological actions; however, the molecular bases of these actions have being issued. We examined the effect of fucoidan on NO production induced by IFN-γ and the molecular mechanisms underlying these effects in two types of cells including glia (C6, BV-2) and macrophages (RAW264.7, peritoneal primary cells).

Induction of apoptosis and expression of apoptosis related genes in human epithelial carcinoma cells by Helicobacter pylori VacA toxin.

Virulence factors produced by Helicobacter pylori have been known to be associated with serious gastroduodenal diseases. The aims of this study were to clarify the apoptosis-inducing properties of vacuolating cytotoxin (VacA) and examine the expression of apoptosis related proteins in human epithelial carcinoma cells expressing (AGS) or lacking (Kato III) p53. The midregion VacA homolog from H.

Modulation of macrophage function activity by ethanolic extract of larvae of Holotrichia diomphalia.

Macrophages play a central role in determining the host response to tumor, in part through the secretion of several potent products. In this study, our work is directed toward studying the in vitro effects of extract from the larvae of Holotrichia diomphalia (HD-EX) on the ability to induce cellular and secretory responses in mouse peritoneal macrophages. Macrophages were treated with various doses (0.