Prostate cancer cell surface-associated keratin 8 and its implications for enhanced plasmin activity.

Serum PSA, Gleason score, pathological stage, and positive surgical margins are currently used as predictors for disease recurrence. However, these criteria are less than precise in predicting disease outcome, with only 10% specificity at the 90% sensitivity level. Keratins are intermediate filament proteins that are contained within normal epithelia.

Phosphate ester hydrolysis of biologically relevant molecules by cerium oxide nanoparticles.

In an effort to characterize the interaction of cerium oxide nanoparticles (CNPs) in biological systems, we explored the reactivity of CNPs with the phosphate ester bonds of p-nitrophenylphosphate (pNPP), ATP, o-phospho-l-tyrosine, and DNA. The activity of the bond cleavage for pNPP at pH 7 is calculated to be 0.860 ± 0.

Synthesis and Characterization of Rhenium(III) and Technetium(III) Organohydrazide Chelate Complexes. Reactions of 2-Hydrazinopyridine with Complexes of Rhenium and Technetium.

The organohydrazide chelate complexes M(III)(NNpy)(PPh(3))(2)Cl(2) (1, 3) (M = Re, Tc) have been synthesized using the organohydrazine 2-hydrazinopyridine. The chelated organohydrazide is a diazenido(1-) ligand that forms a five-membered ring with the metal center. An X-ray structural analysis of 1 indicates that there is a delocalized pi-system formed by the chelate ring.