摘要:
The present invention relates to a bone graft material and a scaffold for tissue engineering applications, which have an osteogenesis-promoting peptide immobilized on the surface. More particularly, the invention relates to a bone graft material and a scaffold for tissue engineering applications, which have a cell adhesion-inducing peptide and/or tissue growth factor-derived peptide immobilized on the surface. By the osteogenesis-promoting peptide immobilized on the surface, the inventive bone graft material and scaffold for tissue engineering applications can promote the transition, proliferation and differentiation of cells associated with regeneration, and eventually maximize the regeneration of tissue. Moreover, the peptide immobilized on the surface has low molecular weight, indicating a reduced risk of immune responses upon its application in the body, and can be present in a stable form within the body, thus showing lasting effects. Accordingly, the peptide makes it expedient to perform surgical operations for the regeneration of periodontal tissue, alveolar bone and other bone tissues, and will show high therapeutic effect.
摘要:
A nanocomposite delivery system uses chitosan as a mucoadhesive material encapsulated in a surface modified network of colloidal nanoporous nanoparticles, such as silica, or other colloid-forming materials, especially metal oxides. Drug delivery systems may be provided by binding a drug to the chitosan/silica nanocomposite, typically by adding a drug or other active agent during in-situ gellation of colloidal silica. When the active agent is, for example, amoxicillin or other antibiotic agent, the drug delivery system may be used in the treatment of stomach ulcers, for example.
摘要:
The present invention relates to multicomponent compositions and methods of administering these compositions, which specifically translocate therapeutic molecules (e.g., drugs or prodrugs) across biological membranes thus reducing potential toxic side effects on nontargeted cells and tissues.