• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제31권2호
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• pp.143-149
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• 2005

Objects : With the advancement of tissue engineering techniques, the effort to develop bioartificial mucosa have been actively delivered. The problem we met with this technique is the lack of mechanical strength between kerationocyte layer and dermal layer, where in the normal skin and mucosa, they are tightly bound with rete ridge structure. The purpose of this study is to understand the 2D and 3D structure of rete ridge of mucosa and skin paddle for rendering more biomimetic structure to the artificial mucosa. Materials and Methods : Oral mucosa and skin from the patients who received the oral surgery and maxillofacial reconstruction were harvested. The epidermis was separated from the dermis after treating with dispase for 12-16 hours. H&E staining was performed for 2D(dimensional) structure study and confocal LASER and SEM study were performed for 3D structure. Mean height(Sc) and arithmetic mean deviation(Sa) of all surface height were calculated. Results : The average height of rete ridge of skin flap was between $67.14{\mu}m$ and $194.55{\mu}m$. That of oral mucosa was between $146.26{\mu}m$ and $167.51{\mu}m$. Pressure bearing area and attached gingiva of oral mucosa showed deeper rete ridges. Conclusion : To obtain the adequate strength of artificially cultured keratinocyte skin and mucosa flap, it is necessary to imitate the original skin and mucosa structure, especially rete ridge. Through this study, 2D and 3D rete ridge structure of normal mucosa and skin was obtained. These results can be used as basis for substrate morphology for keratinocytes culture.

• Archives of Plastic Surgery
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• 제33권5호
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• pp.601-605
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• 2006

Purpose: Large skin defect by various causes, should be covered by autologous skin graft. But, the donor site of autologous skin graft is limited and leaves permanent donor scar and contracture. There have been our trial to engineer artificial skin using allogenic dermis (AlloDerm) with basement membrane. Methods: Dermal and epidermal layer were separated by immersing in dipase solution for 30 minutes, and the separated layers were treated with 0.05% trypsin for 10 minutes. And then each layer was cultivated to fibroblasts and keratinocytes on a culture medium. Fibroblasts were first penetrated into basement membrane of allogenic dermis facing down, then allogenic dermis was flipped over to face up and keratinocytes were transplanted to allogenic dermis. Results: Observing artificial skin fabricated in vitro, we found following: 1) The artificial skin opened in air for 5 days formed epidermal layer. In dermal layer, fibroblast was distributed evenly among all. 2) The artificial skin opened in air for 30 days formed thicker and thicker, and it formed basement membrane, spinous and granular layers. PAS stain to confirm existence of basement membrane showed positive reaction. 3) Cytokeratin 10 stain to confirm the formation of epidermal layer showed positive reaction. 4) The formation of thick keratin, lamellar body and desmosome similar to human skin were observed in result of an electron micrograph. Conclusion: As a result of research, the structure seen in normal skin such as rete ridge, is found in reproduced artificial skin. This type of artificial skin can be used as a useful model for investigating skin disease and for clinical application also.

• Journal of Pharmaceutical Investigation
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• 제40권1호
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• pp.45-49
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• 2010

Unlike human, with some exceptions, animals do not heal with excessive scar. The lack of suitable animal model has hindered the development of effective scar therapy. We previously reported that partial thickness rabbit ear wound model resembles human wound heal process. This study was designed to prepare a hypertropic scar wound model which can be employed for testing anti-scar therapy. Four wounds were created down to the bare cartilage on the anterior side of each rabbit ear using 8-mm dermal biopsy punch and histology analysis at post operation day (POD) 5, 28 and 48 were performed. As the outcome of scar formation is largely determined by the early inflammatory response to the wounding and the degree and the duration of occlusion, cephalodin(50 mg/kg) was injected daily and medical occlusive dressings were applied. Five micro wound and scar sections were stained with hematoxylin and eosin for quantification of epidermal regeneration and scar hypertrophy. Sections were also stained using Masson's trichrome and Sirius red to evaluate collagen organization and rete ridge formation. Wound closure process was assessed to 7wks post wounding. Complete removal of the epidermis, dermis and perichondrial layer caused delayed epithelialization, which results in hypertropic scarring. The inability of the wounds to contract and the delay in epithelialization in rabbit ear was likely due to cartilage and it created scar elevation. The results suggest that full thickness surgical punch wound model in rabbit ear could be employed as a reliable and reproducible scar wound model for testing anti-scar therapy.

• 대한구순구개열학회지
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• 제3권1호
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• pp.11-16
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• 2000

구순열 수술에서 인중의 해부, 형태, 기능적 재건에 도움을 받고자 상순 및 하순의 전층표본을 가지고 미세구조를 관찰하였으며, 자연스럽고 미적인 인중을 재건하기 위해서는 정상적 근육 부착의 재건과 구륜근 표층의 진피 부속물들의 회복과 장력 없는 상순의 접합, 진피 부속물들을 포함한 인중융기의 두께 회복 및 비탄력성 흉터 조직의 최소화가 필요하다고 사료되었다.

• 사상체질의학회지
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• 제10권1호
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• pp.81-99
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• 1998

1. 연구배경 : 사상체질의학에서 체질의 진단은 매우 중요하다. 전체적이고 직관적으로 제시된 동의수세보원의 체질진단 방법을 객관화 할 필요가 있다. 이를 위하여 신체 각 부위의 형태학적인 연구를 통하여 사상체질 유형을 가려내려는 시도가 이루어지고 있으며, 그 중의 하나는 생체 계측 방법을 이용하는 것이다. 본 연구에서는 체질인류학 연구 방법 중의 하나인 지문과 손바닥문의 분석 방법이 사상체질 유형을 가려내는 데 얼마나 도움 되는지 밝히고자 하였다. 2. 방법 : 특별한 질병이 없는 한국사람 347명(남자 241명, 여자 106명)에게 설문지 I 형과 QSCCII를 실시하여 두 가지 방법에서 같은 체질로 진단된 208명(남자 142명, 여자 66명)의 지문과 손바닥문을 채취하여 분석하였다. 삼교차점의 수에 따라 지문의 유형을 분석하였고, 지문의 중심에서 삼교차점까지 직선을 그어서 만나는 피부능선의 수를 세었다. 각 손가락의 몸쪽에 있는 손바닥문의 삼교차점에서 일어나는 피부능선을 추적하여 손바닥문의 유형을 분석하였고, 손바닥문의 삼교차점 사이에 직선을 그어서 만나는 피부능선의 수를 세었다. 그리고 손바닥문의 삼교차점이 이루는 atd각도를 측정한 후 사상체질 유형과 관련성을 살펴보았다. 3. 연구결과 및 결론 : 208명의 사상체질 유형은 태음인 76명(36.5%), 소음인 81명(39.0%), 소양인 51명(24.5%)이었고, 지문과 손바닥문의 분석 결과는 다음과 같았다. 지문의 유형은 태음인을 가려내는 데 도움이 되었고, 손바닥문의 유형은 태음인, 소양인, 소음인을 모두 가려내는 데 도움 되었다. 특히 손바닥문 유형은 소양인과 소음인을 가려내는 데 큰 도움이 되었다. 또한 지문과 손바닥문의 피부능선수는 소양인을 가려내는 데 도움 되었다 . 지문과 손바닥문은 사상체질 유형마다 특징적인 경향이 있으므로 사상체질 유형을 가려내는 데 도움이 도움 될 것으로 기대되며, 향후 본 연구자는 더 많은 사람을 대상으로 지문과 손바닥문 그리고 손금을 함께 관찰하여 보고할 예정이다.