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모세관 기체 크로마토그래피에 의한 치환된 Cyclodextrin 정지상을 이용한 알코올 유도체의 키랄분리
이선행,서영주,이광필,Lee, Sun-Haing,Seo, Yeong-Ju,Lee, Kwang-Pill 대한화학회 1995 대한화학회지 Vol.39 No.2
모세관 기체크로마토그래피에 의한 cyclodextrin 정지상들(PH-${\beta}$-CD, DA-${\beta}$-CD, TA-${\gamma}$-CD)을 이용하여 라세미 알코올들과 그 유도체들의 분리를 연구하였다. 실험에 사용한 모든 알코올들은 trifluoro acetic anhydride, acetic anhydride, trichloro acetic anhydride를 써서 유도화하였다. 거울상체들의 분리선택성은 acylation 시약의 형태에 상당히 의존하는 것을 알았다. 알코올과 그 유도체들의 광학분활에 대한 최상의 실험조건은 용질분자들의 극성에 따라 다르다. 그리고 키랄분리에 관해서 온도, 컬럼이 극성, 수소 결합력, 알코올과 CD 정지상의 입체효과 등의 의존에 관한 연구를 행하였다. 키랄 인식 기구는 키랄 정지상의 종류에 의존하지 않고, 라세미 알코올의 유도체화에 의존하는 것으로 나타났다. S-Hydroxypropyl(PH) ${\beta}$-cyclodextrin(hydrophilic), dialkyl(DA)-cyclodextrin(hydrophobic), trifluoroacetyl(TA) ${\gamma}$-cyclodextrin(intermediate) stationary phases were used for gas chromatographic separation of racemic alcohols and their derivatives. All the alcohols used for this experiment were derivatived by using trifluoro acetic anhydride, acetic anhydride, or trichloro acetic anhydride. It is apparent that the enantioselectivity of the enantiomeric pairs was very dependent on the type of acylation reagent. The best experimental condition of optical resolution of the alcohols and their derivatives was different on the polarity of the solute molecules. The chiral separation was also studied depending on temperature, polarity of the column, and hydrogen bonding ability and steric effect between the alchols and CD stationary phase. The chiral recognition mechanism is dependent not upon the kinds of the chiral stationay phases but upon the derivatization of the racemic alchols.
원형 탈모증 환자에서 DNCB 도포부위에 발생한 백반증
김성식 ( Kim Seong Sig ),서영주 ( Seo Yeong Ju ),김광호 ( Kim Gwang Ho ),김광중 ( Kim Gwang Jung ) 대한피부과학회 2004 대한피부과학회지 Vol.42 No.4
We report a case of vitiligo developed on the sites of DNCB application for the treatment of alopecia areata in a 53-year-old woman. Histopathologic studies of the depigmented patches showed absence of melanin pigmentation at the basal layer of the epidermis and a negative reaction for the Fontana-Masson stain. The current theories explaining vitiligo development after topical sensitizer application are that topical sensitizers induce the vitiligo by a direct cytotoxic effect on the melanocytes, or by unmasking latent vitiligo as a result of the Koebner phenomenon due to contact dermatitis, but the exact mechanism is still unclear. (Korean J Dermatol 2004;42(4):452~455)
육아조직을 동반한 조갑 감입증에서 육아조직 제거의 효과
강민희 ( Min Hee Kang ),서영주 ( Yeong Ju Seo ),박은주 ( Eun Ju Park ),김철우 ( Chul Woo Kim ),조희진 ( Hee Jin Cho ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2008 大韓皮膚科學會誌 Vol.46 No.4
Background: Ingrown toenail is a common disorder that occurs most frequently in the big toe and gives affected patient great discomfort and pain. Granulation tissue of nail wall results from ulceration and inflammation by excessive contact between the nail edge and the soft tissues of the nail wall and induces aggravation of the ingrown toenail. Objective: To decide whether removal of granulation tissue by electrocautery or not with lateral nail avulsion and matricectomy is the effective treatment in ingrown toenails with granulation tissue. Methods: Randomized clinical trial with 12 month follow-up evaluations performed by observers. 33 patients with a total of 37 ingrown toenails were treated partial nail avulsion followed by mastricectomy and removal of granulation (granulation removal group), and 36 patients with 40 ingrown toenails were treated without removal of granulation tissue (control group). The determinations of effectiveness were based on the recurrence rate, duration of post-operative pain, wound healing time and post-operative infection. Results: There was no significant difference in recurrence rates between the granulation removal group (15%) and control group (22%). There was a significant difference in the wound healing time between the granulation removal group (13.8 days) and control group (17.6 days). But there were no significant differences for the duration of post-operative pain and post-operative infection between the two groups. There were correlations between recurrence and duration of post-operative pain, wound healing time and post-operative infection. Conclusion: Procedures with granulation removal are an effective treatment for the treatment of ingrown nails, with the tendency of shorter times to reach complete recovery. But the effect of granulation removal has limited effect on reducing recurrence. (Korean J Dermatol 2008;46(4):453~458)
미만성 대세포 B형 림프종이 동반된 미만성 편평 황색종
이영욱 ( Young Wook Lee ),김현준 ( Hyun Joon Kim ),서영주 ( Yeong Ju Seo ),박은주 ( Eun Ju Park ),김철우 ( Chul Woo Kim ),조희진 ( Hee Jin Jo ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.3
Diffuse plane xanthoma is a group of plane xanthomas that present in yellow to yellowish-brown flat patches on the periorbital area, neck, upper trunk and flexural folds. It is rare and often associated with reticulo-endothelial malignancies such as multiple myeloma, monoclonal gammopathy of unknown significance and other lympho- proliferative disorders. We report a case of diffuse plane xanthoma associated with monoclonal gammopathy of unknown significance and diffuse large B cell lymphoma in a 75 year-old woman. (Korean J Dermatol 2008; 46(3):369∼373)
정석준 ( Suck Joon Jung ),승나르 ( Na Reu Seung ),서영주 ( Yeong Ju Seo ),박은주 ( Eun Ju Park ),김철우 ( Chul Woo Kim ),조희진 ( Hee Jin Cho ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2007 대한피부과학회지 Vol.45 No.12
Estrogen dermatitis is a rare cutaneous disorder characterized by recurrent cyclic eruptions during the luteal phase of the menstrual cycle. The clinical manifestations include pruritus, urticaria, vesicles, papules and eczematous eruptions. A 22-year-old female patient presented with a skin lesion on the back of 6 years periodic duration. She had been recurrently suffering from pruritic eruptions that appear during the luteal phase of the menstrual cycle and resolve after menses. An intradermal skin test to estrogen showed a positive result, but showed negative results to progesterone. After antiestrogen tamoxifen therapy, the lesions were found to have significantly improved. (Korean J Dermatol 2007;45(12):1291∼1293)