Polymethylmethacrylate Particles

OP-1 (BMP-7) stimulates osteoprogenitor cell differentiation in the presence of polymethylmethacrylate particles.

Polymethylmethacrylate (PMMA) particles have been shown to inhibit the differentiation, proliferation, and mineralization of osteoprogenitor cells in vitro. In this study, we investigated the effects of OP-1 (BMP-7) on the osteogenesis of MC3T3-E1 osteoprogenitor cells exposed to PMMA particles in vitro. MC3T3-E1 cells challenged with PMMA particles on the 1st day of differentiation in osteogen...

Stable, Fluorescent Polymethylmethacrylate Particles for the Long-Term Observation of Slow Colloidal Dynamics.

Suspensions of solid micron-scale colloidal particles in liquid solvents are a foundational model system used to explore a wide range of phase transitions, including crystallization, gelation, spinodal decomposition, and the glass transition. One of the most commonly used systems for these investigations is the fluorescent spherical particles of polymethylmethacrylate (PMMA) suspended in a mixt...

Polymethylmethacrylate-induced Inflammatory Macrophages

Macrophages and their fused products are commonly found at the polymethylmethacrylate cementbone interface, but it is not known if they confribute directly to the osteolysis associated with loosening of the cemented prosthesis. We isolated mononuclear phagocytes from granulomas formed by subcutaneous implantation of polymethylmethacrylate into mice and incubated them on bone slices in which the...

Polymethylmethacrylate Augmented with Carbon Nanotubes

Internal Friction in Irradiated Polymethylmethacrylate

Some results of the influence of y radiation on the mechanical properties of PoIymethylmethacrylate are presented. Doses of 0, 50, 100, 150 and 200 kGy were employed. The internal friction (loss tangent) and storage shear modulus were measured at temperatures between 173 K and 300 K using a damped torsion pendulum. Compressive tests were made at room temperature with strain rates between 1 . 4 ...