2018 Volume No 35 – pages 1-12
Title: Locally delivered ethyl-2,5-dihydroxybenzoate using 3D printed bone implant for promotion of bone regeneration in a osteoporotic animal model |
Authors: B-J Kwon, GM Seon, MH Lee, M-A Koo, MS Kim, D Kim, J-J Han, D Kim, J Kim, J-C Park |
Address: Cellbiocontrol Laboratory, Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea |
E-mail: parkjc at yuhs.ac |
Abstract: Osteoporosis is a disease characterized by low bone mass, most commonly caused by an increase in bone resorption that is not matched by sufficient bone formation. The most common complications of postmenopausal osteoporosis are bone-related defects and fractures. Fracture healing is a multifactorial bone regeneration process, influenced by both biological and mechanical factors related to age, osteoporosis and stability of the osteosynthesis. During the treatment of bone defects in osteoporotic conditions, imbalanced bone remodeling is the leading cause for implant failure. To overcome these problems, ethyl-2,5-dihydroxybenzoate (E-2,5-DHB), a drug that promotes bone formation and inhibits bone resorption, was used. E-2,5-DHB-incorporating titanium (Ti) implants using poly(lactic-co-glycolic acid) (PLGA) coating for local delivery of E-2,5-DHB were developed and the effects on bone healing of femoral defects were evaluated in an osteoporotic model. The release of E-2,5-DHB resulted in decreased bone resorption and increased bone formation around the implant. Thus, it was confirmed that, in the osteoporotic model, bone healing was increased and implant fixation was enhanced. These results suggested that E-2,5-DHB-coated Ti implants have great potential as an ultimate local drug delivery system for bone tissue scaffolds. |
Key Words: Osteoporosis, bone formation, bone resorption, bone fracture healing, ethyl-2,5-dihydroxybenzoate. |
Publication date: January 12th 2018 |
Article download: Pages
1-12 (PDF file) |
