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논문 기본 정보

자료유형
학술저널
저자정보
Assefa Freshet (Kyungpook National University) 임지원 (경북대학교) 김주앙 (경북대학교) Ihn Hye Jung (Kyungpook National University) Lim Soomin (Kyungpook National University School of Dentistry) Nam Sang-Hyeon (Kyungpook National UniversitySchool of Dentistry) Bae Yong Chul (Kyungpook National UniversitySchool of Dentistry) 박의균 (경북대학교)
저널정보
한국조직공학과 재생의학회 조직공학과 재생의학 조직공학과 재생의학 제18권 제2호
발행연도
2021.1
수록면
315 - 324 (10page)

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Background: This study investigates the effects of a neuropeptide, secretoneurin (SN), on bone regeneration in an experimental mouse model. Methods: The effects of SN on cell proliferation, osteoblast marker genes expression, and mineralization were evaluated using the CCK-8 assay, quantitative reverse transcriptase polymerase chain reaction (RT-PCR), and alizarin red S staining, respectively. To examine the effects of SN on bone regeneration in vivo, bone defects were created in the calvaria of ICR mice, and 0.5 or 1 µg/ml SN was applied. New bone formation was analyzed by micro-computed tomography (micro-CT) and histology. New blood vessel formation was assessed by CD34 immunohistochemistry. Results: SN had no significant effect on proliferation and mineralization of MC3T3-E1 cells. However, SN partially induced the gene expression of osteoblast differentiation markers such as runt-related transcription factor 2, alkaline phosphatase, collagen type I alpha 1, and osteopontin. A significant increase of bone regeneration was observed in SN treated calvarial defects. The bone volume (BV), BV/tissue volume, trabecular thickness and trabecular number values were significantly increased in the collagen sponge plus 0.5 or 1 µg/ml SN group (p < 0.01) compared with the control group. Histologic analysis also revealed increased new bone formation in the SN-treated groups. Immunohistochemical staining of CD34 showed that the SN-treated groups contained more blood vessels compared with control in the calvarial defect area. Conclusion: SN increases new bone and blood vessel formation in a calvarial defect site. This study suggests that SN may enhance new bone formation through its potent angiogenic activity.

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