Blueberry (Vaccinium angustifolium) flavonoid-containing fractions have been shown to inhibit MMP activity (MMP-2/-9) in DU145 prostate cancer cells. This study examined the effect of a whole cranberry extract on MMP activity in DU145 cells. MMP-2/-9 activity was inhibited by this cranberry extract ...

Several salt compounds were tested in vitro as inhibitors of Erwinia carotovora subsp. atroseptica (van Hall) Dye (Eca) and Erwinia carotovora subsp. carotovora (Jones) Bergey, Harrison, Breed, Hammer & Huntoon (Ecc), causal agents of bacterial soft rot of potato. All compounds were mixed with p...

Oncostatin M (OSM) is a growth and differentiation factor which has been shown to exert both stimulatory and inhibitory effects on tissue invasion in various cell lines. Tissue invasion is a key marker of metastases and can be monitored by examining activities associated with ECM degradation such as...

Natural 'bioactive' factors have the ability to attenuate atherogenesis in in vitro and in vivo models. The effects of cranberry on the expression of two inflammation-linked enzymes, cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS), were examined in aortic smooth muscle ...

Prostate cancer is one of the most common cancers in the Western world, and it is believed that an individual's diet affects his risk of developing cancer. There has been an interest in examining phytochemicals, the secondary metabolites of plants, in order to determine their potential anti-can...

Proanthocyanidin-rich extracts were prepared by fractionation of the fruit of the North American cranberry (Vaccinium macrocarpon). In vitro growth inhibition assays in eight tumor cell lines showed that selected fractions inhibited the growth of H460 lung tumors, HT-29 colon and K562 leukemia cells...

Matrix metalloproteinase (MMP) expression was investigated in NIH-3T3 fibroblasts that secrete K-FGF and in NIH-3T3 cells which express chimeric bFGF with a signal sequence targeting bFGF to the secretory pathway. Correlations between altered MMPs' and other proteases' expression and malig...

Ornithine decarboxylase (ODC) and S-adenosylmethionine decarboxylase (SAMDC) expression was investigated in NIH-3T3 fibroblasts that secrete K-FGF. Correlations between altered ODC and SAMDC expression and malignant potential were determined. Increased ODC and SAMDC expression was associated with in...

Mammalian S-adenosylmethionine Decarboxylase (SAMDC) is a regulatory activity, which is involved in the biosynthesis of polyamines. The polyamines, namely putrescine, spermidine, and spermine, are essential for mammalian cell proliferation. SAMDC expression was examined in a H-ras transformed cell c...

The present study demonstrates alterations in the regulation of matrix metalloproteinase-2 (MMP-2) expression in response to insulin like growth factor-1 (IGF-1) in a H-ras transformed cell line, C3, which is capable of metastasis formation. These changes in MMP-2 expression in response to IGF-1 tre...

This study demonstrates a novel link between alterations in platelet-derived growth factor (PDGF) regulation of ornithine decarboxylase (ODC) expression during malignant conversion. H-ras-transformed cell lines exhibited PDGF-mediated alterations in ODC gene expression. These alterations involved tr...

Matrix metalloproteinase expression was examined in a series of mammalian cell lines of varying degrees of malignant progression, The expression of MMP-2 and MMP-9 was found to correlate with ras-mediated cellular transformation and as a function of malignant potential. Altered MMP-2 and MMP-9 expre...

The matrix metalloproteinases (MMPs) are thought to play key roles in tumour formation and malignant progression. The present study demonstrates alterations in the regulation of matrix metalloproteinase-2 (MMP-2) expression in response to the phorbol ester tumour promoter, PMA, in a H-ras transforme...

The hypothesis that H-ras transformed cells contain alterations in signalling pathways important in controlling the expression of S-adenosylmethionine decarboxylase, (SAMDC) a highly regulated activity in the biosynthesis of polyamines was tested. Mouse 10 T1/2 fibroblasts and H-ras transformed cell...

Inhibition of DNA synthesis and cell proliferation is frequently lost during malignant transformation and occasionally, tumour cell proliferation is actually stimulated by transforming growth factor beta (1) (TGF-beta (1)). The present study demonstrates a novel link between alterations in TGF-beta ...