title: Electrical stimuli improve osteogenic differentiation mediated by aniline pentamer and PLGA nanocomposites.
abstract: Electrical stimulation may improve the proliferation of animal cells. In the present study, osteoblasts were cultured on electroactive aniline pentamer (AP)/poly(lactic-co-glycolic acid) (PLGA) copolymer composites, on which electric pulse was imposed. The combination of polymer and electric pulse enhanced the osteogenic differentiation of the osteoblasts, characterized by the upregulated expression of bone morphogenetic protein (BMP)-2, collagen I and osteonectin and the phosphorylation of Samd4, in contrast to polymer or electrical pulse alone. This action occurred in a polymer content-dependent manner. Therefore, the action of the electric pulse, assisted by the electroactive polymer implant, may be promising in the expedition of injured bone repair.
authors.affiliation: Department of Hand Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033; ; Department of Orthopedics, Chifeng Municipal Hospital, Chifeng 024000, P.R. China.
authors.forename: Jian
authors.initials: J
authors.lastname: Cao
authors.affiliation: Department of Hand Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033;
authors.forename: Yuhong
authors.initials: Y
authors.lastname: Man
authors.affiliation: Department of Hand Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033;
authors.forename: Lisen
authors.initials: L
authors.lastname: Li
keywords: electric field; nanocomposite; osteoblasts; osteogenesis