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Effect of Various Maximization Agents on Photoallergic Contact Dermatitis in Guinea Pigs
Lee, Youn Bok,Houh, Won CATHOLIC MEDICAL CENTER 1981 Bulletin of the Clinical Research Institute Vol.9 No.1
Maximization test was designed to detect the least sensitization potential of haptens. There are several advocated maximization agents such as ultraviolet ray, sodium lauryl sulfate, Freund's complete adjuvant, etc. The present experiment was conducted to assess the comparative effects of these maximization agents on the induction of photoallergic contact dermatitis in guinea pigs. Musk ambrette was employed as a sensitizer of photoallergic contact dermatitis. Harbor's procedure was grossly applied for its induction. For the elicitation, Kim and Houh's method was applied, reversing the order of three different concentrations of photosensitizers advocated by Harber's method, with the lowest concentration applied to a site closer to the nuchal region. The most effective maximization agent observed was Freund's complete adjuvant, followed by sodium lauryl sulfate. UVB was found to be the least effective in this respect. The reaction of Freund's complete adjuvant group was in good accord with the experimental result shown by Harbor et al. However, stronger reaction occurred in the area closer to the nuchal region in spite of the application of a lower concentration and weaker reaction was shown in the area closer to the sacral region with higher concentration. From this experiment it may be inferred that the closer the area to the nuchal region the stronger the reaction occurred regardless of the concentration of a sensitizing agent.
Passive Transfer of DNCB Contact Sensitivity by Allogeneic Spleen Cells in Guinea Pigs
Houh, Dong,Choi, Guk Joo,Houh, Won CATHOLIC MEDICAL CENTER 1984 Bulletin of the Clinical Research Institute Vol.12 No.1
Passive transfer of DNCB contact sensitivity was performed by i.v. injection of spleen cell suspension (1×10^8 /ml in RPMI 1640) into the hind vein of normal guinea pig. Index of contact sensitivity of positive and negative control groups were respectively 83.33% and 8.33%. Transferred contact sensitivity was achieved by spleen cells in guinea pigs, however, the reaction (36.89%) was weaker than that of the positive control.
허동(Dong Houh),서은주(En Joo Seo),조백기(Baik Kee Cho),허원(Won Houh) 대한피부과학회 1984 대한피부과학회지 Vol.22 No.4
We experienced a case of venous hemangioma occuring on the inner aspect of right forearm of 40-year-old woman. The skin lesion was slight tender, pea sized, dark brown surfaced, subcutaneous mass. The entire dermis was filled with numerous coiled thick walled vessels surrounded by fibrous stroma on the histopathologic examination. The wall, lined by a single layer of endothelial cells, lacked elastic fibers on the specimen of Verhoeff-Van Gieson and Massons trichrotne stains.
허동(Dong Houh),최국주(Guk Joo Choi),허원(Won Houh) 대한피부과학회 1984 대한피부과학회지 Vol.22 No.1
DNCB 접촉성감작을 일으킨 기니픽의 비장세포 부유액(1×10^8/ml in RPMI 1640) 2ml를 정상동물 뒷다리 정맥내 주입함으로써 접촉성감작의 전이를 일으켰다. DNCB 유발조작만을 일으킨 유성대조군(8.33%)과 비교하여 감작된 비장세포 수용체에서 DNCB 접촉성감작반응의 전이(36.89%)를 볼 수 있었다. 그러나 DNCB 감작 및 유발조작을 일으킨 양성대조군(83.33%)과 비교하여 비장세포 수용체의 DNCB 접촉 감작은 약화(36.89%) 되어있었다. N/A
Houh, Dong,Byun, Dae Gyoo,Baek, Seung Cheol,Lee, Ho Pyo,Lee, Hye Nam 대한피부과학회 1998 Annals of Dermatology Vol.10 No.3
Neonatal lupus erytematosus is a distinct subset of lupus erythematosus. It is characterized by cutaneous findings exhibiting the morphology of subacute cutaneous lupus erythematosus, congenital heart block, and anti-Ro/SSA and/or anti-La/SSB autoantibodies which result from the transplacental passage of maternal autoantibodies. We report a case of a 12-week-old female infant who presented with characteristic clinical and histopathological features of cutaneous neonatal lupus erythematosus but without evidence of congenital heart block. Initial serological studies reveled the presence of anti-La/SSB antibodies and antinuclear antibodies. 5 months later, follow-up serology was negative in accordance with a clinical remission.