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RISS 인기검색어
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- 저자 : 차형기(Hyoung Gi Cha) (검색결과 2 건)
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차형기(Hyoung Gi Cha),문두찬(Doo Chan Moon),권경술(Kyung Sool Kwon),정태안(Tae Ahn Chung) 대한피부과학회 1993 大韓皮膚科學會誌 Vol.31 No.4
Background : Previous studies have suggested that pityrosporurr yeasts, normal resident flora of skin, may be important in the pathogenesis of dandruff seborrheic dermatitis and confluent and reticulated papillomatosis. Objective : We investigated the incidence and distribution of pityiosorum yeasts on clinically normal skin as a more reasonable method for providing the basic data or proving the relationship of pityrosporum and pathogenesi, of the diseases. Methods : A total of 350 subjects were studied. Skin scrapings were stained with 20% Parker ink-KOH(P-KOH) solution. The numbers of pityrosporum spores and hyphe per high power field( x 400) were counted and designated according to a new grading method using bacterial index(BI) of lepra bacilli. Results : The incidence rates of pityrosporum orbiculare(p. orbiculare) and pityrosporum ovale(p. ovale) were 60-70% and 20-50% of subjects respectively on seborrheic area., The incidence of p. orbicilare was highter than that of p. ovale on all examined sites except for the iterior scalp. And pityrosporal hyphae was present on anteriand posterior scalp and earwax in 24-25% of subjects respectively. The incidence of pityrosporum was higher in summer than other seasons The incidence rate of p. orbiculare and hyphae in the group aged below 9 (except neonates) and above 60, were lower than that of other age groups. The inciderice rates and distribution of grades of pityrosporum of neonates were lower than those of older subjects. Conclusion : The results of this study showed that the incidence and distribution of pityrosporum spores were similar to previoureports and hyphal forms were found 25% approximately on clinically normal skin of the scalp and carwax. The significance of the presenet of pityosporal hyphae and the relationship between normal skin and pityrosporal hyphae are to be firther elucidated. (Kor J Dermatol 1993;31(4):548-558)
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정상인과 지루 피부염 환자에서 두부 전풍의 발생 빈도에 관한 관찰
권경술 ( Kyung Sool Kwon ),차형기 ( Hyoung Gi Cha ),장호선 ( Ho Sun Jang ),정태안 ( Tae Ahn Chung ) 대한피부과학회 1996 대한피부과학회지 Vol.34 No.1
Background: Pityrosporum yeast is a normal resident flora of the skin. Its hyphal form can be found on the lesions of pityriasis versicolor. Our previous studies showed that pathogenic pityrosporal hyphae coulc be found on a clinically normal scalp. We called it pityriasis versicolor of the scalp. This species may be involved in the pathogenesis of seborrheic dermatitis. Objective : We investigated the incidence of pityrosporal hyphae on the scalp of patients with seborrheic dermatitis and normal persons, and compared the results between the two groups. Methods : 202 patients with seborrheic dermatitis, 350 normal persons were studied. Scalp scrapings were stained with 20% Parker ink-KOH(P-KOH) solution. The number of pityrosporal hyphae per high power field(x 400) were counted according to a grading method(1, to 3+). Results : The incidence of pityriasis versicolor of the scalp was 28.7% in patients with seborrheic dermatitis, and 21.7% in normal persons. However the incidence of pityriasis versicolor of the scalp in seborrheic dermatitis in the age group of the second and sixth decades was two fold higher, 43.3%, 40.9%, respectively than in the normal control groups, from 9.5% to 25.0%. In the case of sex distribution, the incidence of pityriasis versicolor of the scalp in female patients of seborrheic dermatitis was two fold higher, 34.8%, than in the normal control, 18.8%. According to seasonal variation, the incidence was higher in spring(21.7%) and summer(34.3%) in the control group, and higher in spring, fall and summer, 31.2, 31.4 and 39.2%, respectively, in people with seborrheic dermatitis. Conclusion : The results of this study showed that the incidence of pityriasis versicolor of the scalp in patients with seborrheic dermatitis and normal person is similar, There were, however some differences between them according to age, sex and season. (Kor J Dermatol 1996;34(1): 10-16)
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