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타액선에 발생한 상피-근상피 암종 4례 증례보고 및 문헌 고찰
한광흥,윤혜정,홍성두,이재일,홍삼표 대한구강악안면병리학회 2009 대한구강악안면병리학회지 Vol.33 No.4
Epithelial-myoepithelial carcinoma (EMC) is uncommon, low-grade malignant epithelial neoplasm, and composed of ductal and large, clear-staining myoepithelial differentiated cells. we found four cases of EMC patients among those who visited the dental hospital of Seoul National University from 1998 to 2008. Immunohistochemical staining with epithelial and myoepithelial marker was done to verify the characteristic biphasic cell population. In our cases, the mean age of the patients was 61.5 years, which is consistent with previous reports. However, all the patients were female, and submandibular glands were the most affected sites. This is different from other reports that parotid gland was the most affected sites. There was recurrence and metastasis to lung in one out of four cases.
한광흥,윤규호,정정권,배정호,장정용,유명수,Han, Kwang-Heung,Yoon, Kyu-Ho,Jung, Jung-Kwon,Bae, Jung-Ho,Jang, Jung-Yong,You, Myung-Soo 대한악안면성형재건외과학회 2005 Maxillofacial Plastic Reconstructive Surgery Vol.27 No.1
Odontogenic myxoma is a benign neoplasm composed of a uniform myxoid appearance that is believed to arise from the primitive mesenchymal portion of the tooth germ. It appears as painless swelling, but it should be distinguished from cystic lesion or other benign tumor. Although odontogenic myxoma is benign, its behavior is known to be aggressive and infiltrative, so thorough curettage and enucleation is necessary. We report a case of odontogenic myxoma of the mandible observed in our clinic with good prognosis after enucleation was done.
구강편평세포암종에서 p16 발현과 PCNA 지수 및 임상병리학적 지표와의 상관관계
한광흥,임지준,홍성두,이재일,홍삼표 대한구강악안면병리학회 2005 대한구강악안면병리학회지 Vol.29 No.2
The p16 gene encodes an inhibitor of the cyclin-dependent kinase, which inactivates cyclin-dependent kinase and contro1s the cell cycle progression, The 10ss of p16 expression or overexpression has been reported in many kinds of tumors, Both p16 and PCNA regu1ates cell cycle progression at the Gl/8 checkpoint, Although many researches about the p16 expression in ora1 cancer have been carried out, there are few studies about the corre1ation between p16 ex pression and pro1iferation of ora1 cancer cells The object of this study was to eva1uate the avai1ability of p16 as ear1y diagnostic factor and prognostic factor through corre1atión ana1ysis of p16 expression in ora1 squamous cell carcinoma and its re1ation to PCNA index and clinicopatho1ogic factors 80 we investigated p16 immunohistochemica1 expression of 83 ora1 squmaous cell carcinomas, and obtained the resu1ts as followed, 18 out of the 83 cases(21, 69%) showed p16 positive and 65 samp1es(78,31%) showed p16 negative, Whi1e the mean va1ue of PCNA indices of p16 positive cases was 65,94 ::t 18,32, that of PCNA indices at p16 negati ve ones 54,79 ::t 18, 39, This difference between them showed statistica1 sígnificance, (P=O, 030) p16 positive group was 12/60(20, 0%) of well differentiated tumors and p16 negative group was 6/23(16, 1%) of moderate1y or poor1y differentiated tumors, This difference did not show statistica1 significance. (P=O. 372) From the resu1ts above, it was suggested p16 expression is re1ated to PCNA index in ora1 squamous cell carcinomas.
타액선에 발생한 상피-근상피 암종 4례 증례보고 및 문헌 고찰
한광흥,윤혜정,홍성두,이재일,홍삼표 대한구강악안면병리학회 2009 대한구강악안면병리학회지 Vol.33 No.4
Epithelial-myoepithelial carcinoma (EMC) is uncommon, low-grade malignant epithelial neoplasm, and composed of ductal and large, clear-staining myoepithelial differentiated cells. we found four cases of EMC patients among those who visited the dental hospital of Seoul National University from 1998 to 2008. Immunohistochemical staining with epithelial and myoepithelial marker was done to verify the characteristic biphasic cell population. In our cases, the mean age of the patients was 61.5 years, which is consistent with previous reports. However, all the patients were female, and submandibular glands were the most affected sites. This is different from other reports that parotid gland was the most affected sites. There was recurrence and metastasis to lung in one out of four cases.
허세흥(Seheung Heo),박병준(Byungjoon Park),한광수(Kwangsoo Hahn),최준수(Joonsoo Choi) 한국정보과학회 2006 한국정보과학회 학술발표논문집 Vol.33 No.1
기존의 PCB 자동시각검사 시스템은 참조 비교 방법을 위한 참조 영상(골든 영상) 획득에 많은 어려움을 겪고 있다. 이러한 문제를 해결하기 위하여 본 연구에서는 PCB 제작에 사용되는 CAD 파일을 이용하여 참조 영상을 생성함으로써 학습을 좀 더 쉽고 간편하게 할 수 있는 시스템을 구현 하였다.
허세흥(Seheung Heo),한광수(Kwangsoo Hahn),최준수(JoonSoo Choi),이호준(Hojun Lee) 한국정보과학회 2005 한국정보과학회 학술발표논문집 Vol.32 No.1
자동차 전자 부품 중 하나인 정션박스의 자동 시각 검사 시스템은 사람의 육안 검사를 자동화함으로써, 정확하고 빠른 검사가 가능하다. 또한 검사 결과를 데이터베이스화하여 지속적인 불량 발생 요인을 분석할 수 있기 때문에 불량률을 감소시켜 제품 신뢰도를 향상 시킬 수 있다. 본 연구에서는 정션박스에 삽입된 퓨즈와 릴레이의 유무 및 오결합을 자동으로 검사하는 자동 시각 검사 시스템을 구현하였고 이를 적용한 결과 신속하고 정확한 검사가 가능함을 보였다.
李炳基,殷種旋,韓光洙,李載興,李東熏 전북대학교 농업과학기술연구소 1988 農大論文集 Vol.19 No.-
This study was carried out to investigate the optimal conditional for producing hybrid cells of radish (Raphnous sativus) and Chinese cabbage (Brassica pekinensis). The conditions investigated are enzyme concentration and incubation time for isolation of photoplast, various conditions for fusion of isolated protoplasts. The optimal concentrations of enzyme for isolation of protoplasts in the hypocotyl was 0.5 % macerozyme and 1.5 % cellulase. The incubation time of enzyme solution for isolation of protoplasts was 5 hrs in radish hypocotyi. The best fusion between the protoplasts of radish hypocotyl and Chinese cabbage mesophyll tissue. was obtained when protoplasts were treated with 30 PEG 4,000 for 20 minutes at pH 5.8 and eluting solution supplemented with 50mM CaCl2 · 2H2O.
한국 운동선수의 스포츠 치의학에 대한 인지도 및 치아교모상태에 관한 연구
이성복,최대균,한광흥,Lee, Sung-Bok,Choi, Dae-Gyun,Han, Kwang-Heung 대한턱관절교합학회 2002 구강회복응용과학지 Vol.16 No.3
This study was accompolished to analyze and compare the number and area of the occlusal contact points in healthy volunteers and athletes with normal occlusion. Before the study, 89 athletes(sports career:8.6 years, average age 20) at Kyung Hee University were selected, and survey was accomplished for athlete's recognition about sports dentistry. For this study, 15 athletes(13 amles and 2 females with average age 20) and 21 healthy volunteers(14 mles and 7 females with average age 20.09) at Kyung Hee University were selected. The visual display acquired by scanning of occlusal record in maximal intercuspation was converted into 16 gray value image. Then, using computer program(J & Lee Occlusal Analyser), the pixel which was in definite range of the gray value was recognized, and the numbers of recognized pixel were calculated to area. The results were as follows : (1) On the survey about sports dentistry, 28% of 89 athletes didn't agree that human occlusion may be important, and 30% didn't have any idea of the influence of human occlusion during their sports activities. (2) The average numbers of total occlusal contact points were 31.05 in control group, and 34.67 in athlete group. The average area of total occlusal contacts was $100.25mm^2$ in control group, and $127.78mm^2$ in athlete group. (3) In control group, the average numbers of occlusal contact points were revealed in order as follows; the first molar(8.48), the second molar(8.24), the second premolar(4.71), the lateral incisor(2.90), the first premor(2.43), the central incisor(2.19), and the canine(2.1). The least average in canine(2.1) was similar to the average(2.19) in central incisor and (2.09) in lateral incisor. In athlete group, the average numbers of occlusal contact points were revealed in order as follows; the first molar(8.87), the second molar(8.47), the second premolar(5.60), the canine(3.80), the lateral incisor(3.33), the first premolar(2.67), and the central incisor(1.93). (4) In control group, the average areas of occlusal contact surface were revealed in order as follows; the first molar($39.47mm^3$), the second molar($37.54mm^3$), the second premolar($9.54mm^3$) the first premolar($6.18mm^3$), canine($3.49mm^3$), the central incisor($2.76mm^3$), and the lateral incisor($1.28mm^3$). In athlete group, the average areas of occlusal contact surface were revealed in order as follows; the first molar($44.11mm^3$), the second molar($40.69mm^3$), the second premolar($16.50mm^3$), the first premolar($9.39mm^3$), the canine($5.08mm^3$), the lateral incisor($3.7mm^3$), and the central incisor($2.25mm^3$). (5). With aging in both control and athlete group, there was a decreasing tendancy in average number of occlusal contact point, and was an increasing tendancy in average area of occlusal contact surface. In comparison at each age, both the numbers and area of occlusal contact were greater in athlete group than in control group. It was not significant in the numbers of occlusal contact points beween athlete and control group(p>0.1), but significant in the area of occlusal contact surface(p<0.05). (6) In comparision as to the kind of sports(Gymnastics:2, Rugby:3, Soccor:5, Ice hocky:5), the numbers of occlusal contact points were the most in ice hocky, and the area of occlusal contact surface was the greatest in gymnastics. With increasing a career in athlete group, there was a decreasing tendancy in average numbers of occlusal contact points, and was an increasing tendancy in average area of occlusal contact surface.