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백서의 두정골 결손부 모델에서 maltodextrin-thrombin collagen이 골 재생에 미치는 효과의 평가

초록/요약 도움말

백서 두정골의 결손부에 maltodextrin-thrombin (MT) collagen에 적신 콜라겐 플러그를 삽입한 그룹, 결손부에 콜라겐 플러그만을 삽입한 그룹, 결손부를 그대로 둔 그룹 간에 신생골 형성의 정도를 비교, 분석하여 MT collagen이 신생골의 형성에 미치는 영향을 알아보고자 한다. 이를 위해 36마리의 백서를 무작위로 12마리 씩 3그룹으로 나눈 후, 두개골의 정중봉합부에 직경 8㎜ trephine bur로 한 개의 골창을 형성한 후, 각각의 골 결손부를 다음과 같이 처치한다. Group 1은 결손부에 아무런 처치를 하지 않고 다시 봉합한다. Group 2는 골 결손부에 콜라겐 플러그만을 삽입하고, Group 3은 LMT collagen을 적신 콜라겐 플러그를 삽입한 후 다시 봉합한다. 4주, 8주 후에 각 그룹마다 6마리씩 희생시킨 후, 두개골 부위 표본을 채취하여 micro-computerized tomography(μ-CT)와 HE staining과 MT staining, 그리고 RUNX-2 및 osteoprotegerin에 대한 immunohistochemical(IHC) 분석을 시행한다. 결과적으로, LMT collagen을 적용한 collagen plug를 골 결손부에 적용하였을 경우, 아무 처치를 하지 않은 경우나 collagen plug만을 적용한 경우에 비해 신생골의 골 형성이 4주에서는 통계적으로 유의한 차이가 없었지만, 8주에서 통계적으로 유의하게 증가한 것을 알 수 있었다. 따라서 LMT collagen과 scaffold로 기능할 collagen plug의 조합이 골 결손부의 수복에 있어서 다양한 가능성과 선택지를 임상가에게 제공할 수 있을 것으로 기대된다. 주제어 : Maltodextrin-thrombin (MT) collagen, Fibrin, Lidocaine, Scaffold, Collagen plug, Bone regeneration, Rat calvarial model 이 성과는 2018년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No.2018R1C1B5086579). (2020)

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초록/요약 도움말

We compared and analyzed the new bone formation between the group in which the collagen plug soaked in maltodextrin-thrombin (MT) collagen was inserted in the defect of the calvarial bone in the rat, the group in which only the collagen plug was inserted in the defect, and the group that left the defect intact, and investigate the effect of MT collagen on the new bone formation. To this end, 36 rats were randomly divided into 3 groups of 12, and a single bone window was formed with a trephine bur with a diameter of 8 mm on the median suture of the calvarial bone, and each bone defect was treated as follows. Group 1 is sutured again without any treatment on the defect. In Group 2, insert only the collagen plug into the bone defect, and in Group 3, insert the collagen plug soaked with LMT collagen, and then suture. After 4 weeks and 8 weeks, 6 animals were sacrificed in each group, and then samples of the skull area were collected and subjected to micro-computerized tomography (μ-CT), HE staining, MT staining, and immunohistochemical (IHC) analysis for primary antibodies of RUNX-2 and osteoprotegerin. As a result, there was no statistically significant difference in bone formation at 4 weeks when the collagen plug to which LMT collagen was applied was applied to the bone defect, compared to the case where no treatment was applied or only the collagen plug was applied. However, it was found that it increased statistically significantly at 8 weeks. Therefore, it is expected that the combination of LMT collagen and a collagen plug that will function as a scaffold can provide clinicians with various possibilities and options for repairing bone defects. Key words : Maltodextrin-thrombin (MT) collagen, Fibrin, Lidocaine, Scaffold, Collagen plug, Bone regeneration, Rat calvarial model This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No.2018R1C1B5086579).

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목차 도움말

Ⅰ. Introduction 1 page

Ⅱ. Materials and Methods 3 page

Ⅲ. Results 6 page

Ⅳ. Discussion 8 page

Ⅴ. Conclusion 11 page

Ⅵ. References 12 page

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