The objective of this study was to elucidate the role and mechanism of nitric oxide (NO) synthase (NOS) in modulating the growth of the Caco-2 human colon carcinoma cell line. The two novel observations reported here are, first, that N G-hydroxy-l-arginine (NOHA) inhibits Caco-2 tumor cell proliferation, likely by inhibiting arginase activity, and, second, that NO causes cytostasis by mechanism...

To increase the intestinal delivery of dietary β-carotene, there is a need to develop nanostructured food systems encapsulate this fat soluble bioactive. The aim study was evaluate bioacessibility and bioavailability across barrier β-carotene-enriched nanoemulsions stabilised with two emulsifiers (lecithin or sodium caseinate) by coupling an in vitro gastrointestinal digestion cell culture mode...

AIMS Adhesion of a micro-organism to a cell surface is often considered to be the first step in pathogenesis. Inhibiting this process may have therapeutic effects in vivo. This study investigates the inhibitory effects of various bovine whey products on the association of Salm. Typhimurium, E. coli O157:H7 and C. malonaticus (formerly Enterobacter sakazakii) to the human CaCo-2 cell line. Invas...

A series of stable breast cancer resistance protein (BCRP, ABCG2) knockdown cell lines were produced by transduction of Caco-2 cells with lentiviral vector-based short hairpin RNA (shRNA). Caco-2 cell is a human intestinal-derived cell line widely used to study intestinal drug absorption. Caco-2 expresses three apical drug efflux transporters: BCRP, P-glycoprotein (P-gp; ABCB1), and multidrug r...

the aim of this investigation was to design and develop nanoemulsions as novel delivery systems for rapamycin. phase behavior of quaternary systems composed of traicetin (as oil), various surfactants and co-surfactants and water at different surfactant/co-surfactant weight ratios were investigated by the construction of phase diagrams. formulations were taken from the o/w ne region of the phase...

The human colon carcinoma cell line Caco-2 was examined for glutathione S-transferase (GST) composition and activity. Freshly seeded cells and cells until 4 days after confluency contain only the placental (Pi) form of glutathione transferase. Cells in culture for longer periods start to express class-Alpha GST isoenzymes. Confluent cells in culture for 20 days or longer contain up to 90% class...