수종의 광독성 약물투여 후 시간에 따른 피부농도 및 최소 광독량에 관한 연구

박윤기,조무연,한승경,임성빈 ( Yoon Kee Park,Moo Yon Cho,Seung Kyung Hann,Sung Bin Im ) 대한피부과학회 1991 大韓皮膚科學會誌 Vol.29 No.5

N/A The Skin Concentration and Minimal Phototoxic Dose Following Administration of Phototoxic Drugs as a Function of Time Yoon-Kee Park, M.D., Moo Yon Cho, M.D., Saung Kyung Hann, M.D., Sungbin im, M.D. Department of Dermatology Yonsei Univeraity College of Medicine, Seoul, Korea Psoralen photochemotherapy(PUVA) is defined as a treatment that depends on the interaction of a photosensitizing substance, psoralen, and long wave jltraviolet(UVA) radiation that results in therapeutically beneficial effects. The rationale of its use is to clear skin disease by repeated controlled phototoxic reactions. The efficacy of PUVA depends on the drug, the UVA dose and wave length, the individual sensitivity to the phototoxic reaction and on the disease to be treated. However, the major factor is the amount of psoralen at the site of photochemical reaction in skin. Daspite the extensive experiences which have now accumulated in the use of PUVA, the relationship between the therapeutic response and phototoxicity as it occurs in normal skin is not established. Comparative data on different psoralen molecules and their skin sensitizing ability are required. From studies on the skin concentration using HPLC and minimal phototoxic dose following oral administration, intraperitoneal administration, a bath of phototoxic drugs as a function of time in guinea pigs, the following results are obtained. 1. The skin concentration of phototoxic drugs after oral administration peaked at 1.5 hours, and the concentration of 8-methoxypsoralen(8-MOP) was 3.7 times greater than that of 5-methoxypsoralen(5-MOP). The skin concetration of 4,5,8-trimethylpsoralen(TMP) was not detected in this study(limit of sensitivity 5ng/g). 2. The skin conentration of phototoxic drugs after intraperitoneal administration peaked at 30 minutes, and the concentration of 8-MOP was slightly greater than that of 5-MOP. The skin concentration of TMP was not detected in this study(limit of sensitivity 5ng/g). 3. The skin concentration of phototoxic drugs after bathing peaked immediately after bathing, and the skin concentrations of phototoxic drugs after bathing decreased in the order of 5-MOP, TMP, and 8-MOP. 4. The minimal phototoxic dose of phototoxic drugs after oral administration was lowest at 1.5 hours, and the minimal phototoxic dose of 8-MOP was 8 times less than 5-MOP, 24 times less than TMP. The phototoxicity of 8-Mop after oral administration was strongest. The time of lowest phototoxic dose and highest skin concentration was the same. 5. The minimal phototoxic dose of phototoxic drugs after intraperitoneal administration was lowest at 30 minutes, and the minimal phototoxic dose of 8-MOP was 1.3 times less than 5-MOP, 5.7 times less than TMP. The phototoxicity of 8-MOP after intraperitoneal administration was strongest. The time of lowest phototoxic dose and highest skin concentration was same. 6. The minimal phototoxic dose of phototoxic drugs after bathing was lowest at 15 minutes. The minimal phototoxic dose of 8-MOP was not significantly different but was significantly greater than that of 5-MOP.

C3H 생쥐에서 자외선 B의 집중조사와 분할조사가 표피내 랑게르한스 세포의 회복에 미치는 영향

구상완,한승경,박윤기,조무연 ( Sang Wahn Koo,Seung Kyung Hann,Yoon Kee Park,Moo Yon Cho ) 대한피부과학회 1991 대한피부과학회지 Vol.29 No.4

N/A The Effect on the Recovery of Epidermal Langerhans Cells in C3H Mice after Single and Fractionated Exposure of Ultraviolet B Irradiation Sang-Wahn Koo, M.D., Seung Kyung Hann, M.D., Yoon-Kee Park, M.D., Moo Yon Cho, M.D. Department of Dermatology, Yonsei University College of Medicine Seoul, Korea The study was undertaken to see the recovery in epidermal Langerhans cells in relation to time after UVB irradiation through different amounts and ways of exposure in C3H mice. We irradiated the ears of C3H mice with UVB 200mJ/㎤ and 400mJ/㎤ in a single dose at one time and 5 fractionated doses for 5 days and 10 fractionated doses for 10 days and performed biopsies on the ears of the control and experimental groups after, 2, 7, 14, 21 days of irradiation and stained them by the immunoperoxidase method. The results are summarized as follows. 1. A more significant decrease in the number of Ia-positive epidermal Langerhans cells was observed in single-dose-exposed group than fractionated-dose-exposed groups on the second day of irradiation. 2. On the seventh day of exposure, the number of the Ia-positive epidermal cells in single-dose-exposed group returned to normal, but in fractionated-dose-exposed groups the number of Langerhans cells decreased most remarkably. 3. In fractionated-dose-exposed groups, the number of Langerhans cells returned to normal on the 14th or 21st day of expposure. (Kor J Dermatol 29(4) : 459-465, 1991)

비전형적 거대색소반을 보인 신경섬유종증

박윤기(Yoon Kee Park),한신원(Shin Won Han),강진수(Jin Soo Kang) 대한피부과학회 1984 대한피부과학회지 Vol.22 No.3

We have experienced a case of neurofibromatosis with unusual giant pigmentation, which presents itself as a 28 cm x 40 cm sized, serrated bordered light brownish patch speckled with small dark hyperpigmented macules on his back. Histopathologic examinations of light brown patch and speckles showed only an increase in basal melanin pigmentation.

백반증 환자에서 항멜라닌세포 자가항체 활성도의 변화에 관한 연구 - 시험관내 보체매개 멜라닌세포 독성능의 측정 -

박윤기(Yoon Kee Park),한승경(Seung Kyung Hann),송민석(Min Seok Song),윤정구(Jung Ku Yoon),김형일(Hyung Il Kim) 대한피부과학회 1991 大韓皮膚科學會誌 Vol.29 No.3

Several observation suggest that the antimelanocyte autoantibodies could play a role in melanocyte destruction. Some experiments indicate that melanocyte antibodies from patients with vitiligo can kill melanocyte in vitro. In these experiments, we demonstrated that vitiligo patient's sera containing antimelanocyte antibodies can lyse cultured human melanocytes by complement activation. Melanocyte cytotoxicity was measured using the ethidium bromide/ acridine orange viability assay. Significant melanocyte cytotoxicity was seen in sera from patients with both active and inactive vitiligo(p<0.01). Melanocyte cytotoxicity measured with complement-mediated cytotoxicity decreased after systemic steroid treatment(p<0.05) ; however melanocyte cytotoxicity showed no significant change with systemic PUVA therapy. (Kor J Dermetol 20(3): 391 3081, 1991)

자연기흉에 대한 임상적 고찰

박윤기 ( Yoon Kee Park ),배성근 ( Sung Keun Bae ),유남수 ( Nam Soo Rhu ),조동일 ( Dong Il Cho ),유재인 ( Jae In Yoo ),정혜영 ( Hae Young Chung ) 대한결핵 및 호흡기학회 1980 Tuberculosis and Respiratory Diseases Vol.27 No.4

백반증 환자의 HLA 항원 및 면역학적 검사

박윤기(Yoon Kee Park),이민걸(Min Geol Lee),강진수(Jin Soo Kang),강원형(Won Hyong Kang) 대한피부과학회 1984 大韓皮膚科學會誌 Vol.22 No.5

Although vitiligo is a common disorder with well-known clinical features, its etiology is still vague. It has been suggested that immunologic factors are important in the pathophysiology of vitiligo. And the association of HLA antigens with vitiligo has been reported. Authors examined HLA phenotypes in thirty-nine patients, T lymphocytes in thirty- three patients, B lymphocytes in thirty-one patients, and quantitation of IgG, IgA, IgM and IEP(immunoelectrophoresis) in twenty-five patients with vitiligo in this study. T3 and T4 were investigated in twelve patients, CBC in thirty-nine and urinalysis in thirty-five patients with vitiligo for screening of associated diseases ; thyroid disease, anemia and diabetes mellitus. The results are as follows; The frequency of HLA A9, Bw15 and Bw22 was significantly decreased in vitiligo patients compared to control group(p=0. 003, 0. 02, 0. OR) 2. There were no significant differences in the results of total and active lymphocytes and B lymphocytes in vitiligo patients compared to the control group. The results of quantitation of IgG, IgA, IgM and IEP showed within normal lirnits except one, an increased IgG, 2,200rng/100ml (normal: 500 1,500) and polyclonal gammopathy. 4. Among twelve vitiligo patients, one showed increased TR, 355ng/100ml (normal: 80 220) and T4, 17. 3pg/100ml (normal: 5 13). 5. CBC and urinalysis were within normal limits in all patients.

백반증 환자에서 표피 Langerhans 세포수의 변화에 관한 연구

박윤기(Yoon Kee Park),한승경(Seung Kyung Hann) 대한피부과학회 1987 대한피부과학회지 Vol.25 No.4

Report. about numeric change of LC between vitiliginous skin(VS) and adjacent normal appering skin (ANAS) are hard to find, Epidermal Langerhans Cell (LC) dersities in VS and ANAS were studied in 18 patient with generalized vitiligo. Adenosine triphosphatase(ATPase) stain was used to characterize LC. Epidermal LC densities were calculated by means of an eye piece reticule and expressed per mm. The results were as follows; 1. The was significant body site variation of LC densities in ANAS and the range of densities of LC per mm were from 668+165 to 1,241 _3 and the mean density of LC per mm was 944+258. 3. The LC densities of VS was similar to that of ANAS(p: not significant). In conclusion quantiative change of epidermal LC in vitiligo doesn't seem to have significant relation with pathogenesis of vitiligo.

거대 섬유성 조직구종

박윤기(Yoon Kee Park),이민걸(Min Geol Lee),방동식(Dong Sik Bang),권태정(Tae Jung Kwon),김정숙(Jung Sook Kim) 대한피부과학회 1984 대한피부과학회지 Vol.22 No.1

Fibrous histiocytomas are characterized by a variable combination of cells with fibroblastic and histiocytic features. They exhibit a distinctive but inconstant cellular arrangement referred to as a storiform or cartwheel pattern. Considerable corfusion has enveloped these tumors as a result of their various terminology-fibrous histiocytoma, dermatofibroma, sclerosing hemangioma, fibroxanthoma, subepidermal nodular fibrosis, xanthogranuloma, giant cell tumor of tendon sheath. A histologically benign but locally infiltrating, 15 * 20cm sized, fibrous histiocytoma was found in the posterior aspect of left thigh of a 17-year-old man. The tumor was incompletely excised due to adhesion of the tumor mass to sciatic nerve and then radiation therpy was combined, Histogenesis and prognostic aspects of the tumor are discussed.

수장 (手掌) 변연 (邊緣) 각화증

박윤기(Yoon Kee Park),백승언(Seung Eon Baek),김동건(Dong Kun Kim) 대한피부과학회 1985 대한피부과학회지 Vol.23 No.1

We herein report a 28-year-old woman with typical marginal keratoderma of the palms of 4 years duration. She denied any chronic pressure or trauma. Histological findings disclosed marked hyperkeratosis, parakeratosis, acanthosis, elongation of rete ridges, edema and capillary dilatations of papillary dermis, and infiltration of chronic inflammatory cells. There was no changes in collagenous and elastic fibers. Treatment with oral 13-cis retinoid and topical application of 0.02% flumethasone ointment containing 3%, salicylate resulted in only transit effect.

Woringer - Kolopp 병

박윤기(Yoon Kee Park),남인환(In Whan Nam) 대한피부과학회 1985 대한피부과학회지 Vol.23 No.3

Woringer-Kolopp disease, so called pagetoid reticulosis, is most likely represent a chronic localized from of reticulosis. A 24-year old male patient visited with asymptomatic slowly enlarging, scaly single patch on his left thigh for 10 years duration. Histopathologic studies were taken with H-E stain, D-PAS, transmission electronmicroscopy and monoclonal antibody(OK6) tissue stain. Infiltration of atypical cells showed in the lower portion of epidermis like pagetoid patterned, none in dermis. It seems to be that the cell in this case probably originated from the stimuIated T-lymphocyte.