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이증훈 (Jeung Hoon Lee) 대한피부과학회 1986 大韓皮膚科學會誌 Vol.24 No.1
This study was performed in the Korean recruits to determine the prevalence and the sites of predilection of the nevi involving melanocytes. The results were summarized as follows; 1) 411 of 2311(17. 7%) recruits examined were found to have nevus spilus, most prevalent in the trunk. The lesions were usually solitary but occasionally two or three lesions were found in a single individual. The prevalence of speckled lentiginous nevus was 0.49%,(2l/4247). The site of prevalence of progressive cribriform and zosteriform hyperpigmentation was 0. 80% (34/4247). The lesions were most commonly observed in the lower trunk and upper thighs. 4) The prevalence of Becker's nevus was 0.45%(19/4247). The lesions were most commonly observed in the shoulder and its surrounding areas. 5) Persistent Mongolian spot were observed in 2. 73% (63/2311). The proportion of extrasacral spots to sacral spots was increased to almost half of the entire spots. 6) Blue nevi were observed in 0. 48M (11/2311), most frequently in the sacral area.
이증훈(Jeung Hoon Lee),현종명(Jong Myung Hyun) 대한피부과학회 1985 대한피부과학회지 Vol.23 No.6
Reactive perforating collagenosis, first described by Mehregan et al in ]967, is a skin disorder characterized by transepidermal eliniination of altered collagen fibers. This rare disease appears as recurrent, umbilicated, crusted papules in response to minor trauma. We report here a case of reactive perforating collagenosis in a 21-year-old man. Examination of the skin revealed a number of centrally umbilicated, asymptomatic papules filled with keratotic plugs in various development and regression. The lesions were distributed on the dorsa of the hands, face, and neck. The biopsy spccimen showed a few of thin bundles of collagen which v ere extruded from the dermis through the atrophic epidermis and the turinels within the epidermis, reaching the buttom of the plug.
Immunohistochemical Study of O-GlcNAcylation in Human Skin Tumors
Young Lee(이영),Dong Kyun Hong(홍동균),Dae Kyoung Choi(최대경),Seul Ki Lim(임슬기),Kyung Cheol Sohn(손경철),Myung Im(임명),Young Joon Seo(서영준),Young Ho Lee(이영호),Jeung Hoon Lee(이증훈),Chang Deok Kim(김창덕) 대한체질인류학회 2014 해부·생물인류학 (Anat Biol Anthropol) Vol.27 No.2
단백질 전사 후 변형 (posttranslational modification)은 단백질 기능을 조절하는 기전의 하나로, 당화(gycosylation), 아세틸화 (acetylation), 메틸화 (methylation) 등을 포함한다. O-linked β-N-acetylglucosamine (OGlcNAc)에 의한 단백질 전사 후 변형은 많은 세포 반응에 관여하는 조절 기전으로 최근 연구가 많이 진행되고 있다. 특히, O-GlcNAc에 의한 단백질 전사 후 변형(O-GlcNAcylation)은 유방암, 폐암 및 대장암 등과 같은 암질환의 발병에 관여함이 보고되었다. 그러나 이러한 O-GlcNAcylation이 피부종양에 어떠한 영향을 미치는지 잘 밝혀져 있지 않다. 본 연구에서는 다양한 피부종양을 대상으로 하여 O-GlcNAcylation이 어떻게 일어나는지 면역조직화학을 통해 살펴보았다. 그 결과, 양성종양에 비해 암전구증 및 악성종양에서 전체적으로 O-GlcNAcylation이 증가해 있었다. 또한 O-GlcNAcylation을 담당하는 효소인 O-GlcNAc transferase (OGT) 및 O-GlcNAc을 제거하는 효소인 O-GlcNAcase (OGA) 발현 또한 양성종양에 비해 암전구증 및 악성종양에서 증가해 있었다. 이러한 연구 결과는 O-GlcNAcylation이 여러 피부종양의 발병에 관여함을 시사한다. O-linked β-N-acetylglucosamine modification is an important post-translational modification, emerging as a novel regulatory mechanism in various cellular events. Recently, several studies have shown that O-GlcNAcylation plays an essential role in human breast, lung, and colon cancers. With regard to skin cancers, the role of O-GlcNAcylation has yet to be elucidated. To investigate whether O-GlcNAcylation is linked to human skin tumor development, immunohistochemical analysis was performed to investigate the presence of OGlcNAcylation in various skin tumors. We evaluated the levels of O-GlcNAcylation, O-GlcNAc transferase, and O-GlcNAcase in 29 benign tumors, 12 premalignant tumors, and 26 malignant tumors in skin. Compared to the benign tumors, premalignant and malignant tumors had increased patterns of O-GlcNAcylation. In addition, the O-GlcNAc transferase and O-GlcNAcase levels were higher in premalignant and malignant tumors than in benign tumors. Interestingly, O-GlcNAcase levels were significantly increased in premalignant tumors compared to benign and malignant tumors. These results suggest that O-GlcNAcylation of proteins may play an important role in the development of human skin tumors.
서기범,이증훈,박장규 ( Gi Bum Shur,Jeung Hoon Lee,Jang Kyu Park ) 대한피부과학회 1988 大韓皮膚科學會誌 Vol.26 No.3
Among the patients visting Department of Dermatology, Chungman National University, 58 cases had various side effects due to the malpractice of skin disorders. We analysed these 58 cases and the results can be summerized as follows ; 1. 37 cases(64%) were in the second and third decades and 11 cases(19%) were under 19 years-old. 2. Drug medication from pharmacy was the most common(79%), and then local clinics(12%), herb clinics(9%) in decreasing orders. 3. In the route of administration, oral ingestion(38%) was the most common, and 47 cases (81%) were medicated with adrenocorticoids. 4. In motivation to the visit, 31 cases(53%)were by advice, 15 cases by advertizement and 12 cases (21%) by themselves. 5. Acne and psoriasis were about a half of pre-existing skin diseases. 6. Side effects due to malpractice may be divided into 5 items : systemic side effects due to adrenocorticoids (59%), aggravation of pre-existing skin diseases (22%), topical side effects due to adrenocorticoids (10%), chemical irritation and burn (7%), and mercury intoxication (2%) in decreasing orders.
김경훈(Kyung Hoon Kim),윤지석(Ji Seog Yoon),김영호(Yeong Ho Kim),이증훈(Jeung Hoon Lee),박장규(Jang Kyu Park) 대한피부과학회 1993 대한피부과학회지 Vol.31 No.5
We report a case of a skin problem induced by a visual display t rminal in a 24-year-old female. The patient had erythematcn.is rashes, crusts on both zygomatic areas and upper eyelids with itching, burning and pain sensations after she had been exposed to her visual display terminal. After the cassation of exposure, her skin lesions were markedly improved. A proioction test with her own visual display terminal was positive. (Kor J Dermatol 1993;31(5):796-799)