Octacalcium phosphate collagen composite (OCP/Col) enhance bone regeneration in a rat model of skull defect with dural defect
Takashi Sasaki,
Kuniyasu Niizuma,
Atsushi Kanoke,
Keiko Matsui,
Shogo Ogita,
Sherif Rashad,
Tadashi Kawai,
Mika Watanabe,
Hidenori Endo,
Tetsu Takahashi,
Shinji Kamakura,
Teiji Tominaga
Affiliations
Takashi Sasaki
Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
Kuniyasu Niizuma
Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan; Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan; Corresponding author.
Atsushi Kanoke
Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
Keiko Matsui
Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
Shogo Ogita
Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
Sherif Rashad
Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
Tadashi Kawai
Division of Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Morioka, Japan
Mika Watanabe
Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan
Hidenori Endo
Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
Tetsu Takahashi
Division of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
Shinji Kamakura
Bone Regenerative Engineering Laboratory, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
Teiji Tominaga
Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
Cranial bone defects are a major issue in the field of neurosurgery, and improper management of such defects can cause cosmetic issues as well as more serious infections and inflammation. Several strategies exist to manage these defects clinically, but most rely on synthetic materials that are prone to complications; thus, a bone regenerative approach would be superior. We tested a material (octacalcium phosphate collagen composite [OCP/Col]) that is known to enhance bone regeneration in a skull defect model in rats. Using a critical-sized rat skull defect model, OCP/Col was implanted in rats with an intact dura or with a partial defect of the dura. The results were compared with those in a no-treatment group over the course of 12 weeks using computed tomographic and histological analysis. OCP/Col enhanced bone regeneration, regardless of whether there was a defect of the dura. OCP/Col can be used to treat skull defects, even when the dura is injured or removed surgically, via bone regeneration with enhanced resorption of OCP/Col, thus limiting the risk of infection greatly.
