Size-modulated catalytic activity of enzyme-nanoparticle conjugates: a combined kinetic and theoretical study.

A series of experiments were performed to systematically analyze the effect of nanoparticle (NP) size on the catalytic behavior of enzyme-NP conjugates, and a shielding model based on diffusion-collision theory was developed to explain the correlation between the size effects and the kinetic responses.

An enzymatic kinetics investigation into the significantly enhanced activity of functionalized gold nanoparticles.

Kinetic and thermodynamic studies reveal that the property of significantly enhanced catalytic activity with colloidal stability is attributed to an efficacious means of tuning enzyme-substrate association by varying with the rate constants in the presence of functionalized gold nanoparticles.

Hepatoprotective effect of Cirsium arisanense Kitamura in tacrine-treated hepatoma Hep 3B cells and C57BL mice.

Cirsium arisanense Kitamura (Compositae) has been used for hundreds of years in Taiwan as a folk medicine for hepatoprotection. However, no scientific research has demonstrated this effect. In the present study, we extracted the phenol-containing aqueous components of C.