1.Distribution of Keratinophilic Fungi in Soil According to Latitudes in Korea.
Korean Journal of Dermatology 1989;27(6):672-679
With a view to investigating the distribution of keratinophilic fungi in soil according to latitudes in south Korea, soil samples were collected at 81 sites in 17 areas in different latitudes across the country and keratinophilic fungi were isolated by means of Vanbreusegherns technique. The results are summarized as follows : 105 strains of keratinophilic fungi were recovered from 56(69.2%) out of 81 samples. Isolated fungi were composed of 41 strains of Trichophyton ajelloi, 24 stains of Chrysosporium species, 20 strains of Microsporum gypseum, and 20 strains of M. cookei. Frequency of isolation of keratinophilic fungi tended to decrease from higher latitudes down to lower latitudes. In areas of higher latutudes, T. ajelloi and M. cookei were isolated more frequently than in lower latitudes. M. gypseem was most frequent in Cheju City, and Chrysosporium species showed an even distribution, Among three areas under different conditions of moisture and shadedness(i.e., shaded wet, shaded dry, and sunny dry areas), frequency of isolation was highest in shaded dry areas(72.2%). T. ajelloi was the most frequent species in all the three areas, especially in shaded wet areas(53.1%). No M. gypsetcm was found in shaded dry areas. As regards distribution at various sites, roadsides and streamsides exhibited the highest frequency of isolation, and hills the lowest. Except for roadsides, T. ajelloi was the most frequent species at all sites, especially in forests. M. gypseum was frequent at sites beside streams M. cookei at streamsides, fields, and hills and Chrysosporim species in gardens, forests, and streets.
Chrysosporium
;
Coloring Agents
;
Fungi*
;
Jeju-do
;
Korea*
;
Microsporum
;
Rivers
;
Soil*
;
Trichophyton
2.A case of recurrent infantile digital fibroma.
Hyun Chul CHOI ; Young Chul KYE ; Chil Whan OH
Korean Journal of Dermatology 1992;30(5):743-746
Recurrent infantile digital fibroma is a peculiar fibrous tumiir that may be single or multiple on fingers and toes of infants and children. We report a 5-year-old gril with recurrent infantile digital fiber oma which was recurrent on the left 5th toe. The lesion had noted at the age of 6 months. and was excised surgically when the child was 3 year old. 2 years after operation, the lesion was recurred in operation site. Microscopically, nodular fibrous mass is attached to flattened,pidermis. The underlying nodule is composed of proliferating fibroblasts surrounded by derse collagenous tissue. We could find eosinophilic inclusion bodies in the cytoplasm of fibro ilast. It was stained pink with H&E, bright red with Massons trichrome and purple with PTAH.
Child
;
Child, Preschool
;
Collagen
;
Cytoplasm
;
Eosinophils
;
Fibroblasts
;
Fibroma*
;
Fingers
;
Humans
;
Inclusion Bodies
;
Infant
;
Toes
3.Evaluation of Skin Furrows in the Ageing Process using an Image Analysis System.
Korean Journal of Dermatology 1997;35(2):292-302
BACKGROUND: The confgurations of the skin surface, as characterized by surface furrows and plateaux, are known to change with ageing. There are many parameters to analyze the effects of ageing processes on the surface configuration. However, there are contradictory results among the authors. OBJECTIVE: The purpose of this study was to compare the sensitivity of various parameters being described in other reports with our new parameters used in evaluating the changes of the skin surface in the agein processes. METHODS: 112 healthy Korean males in 4 age groups participated in this study. Silicon skin replicas were taken from medial and lateral aspects of the forearm. Images of the skin replicas were analyzed by means of a digital image processing system (AIC, GA). Most parameters were calculated and measured in the primary skin axis. Image analyses were porformed by 3 different processes i.e., morphometry, densitometry (optical profilometry), and histograms. RESULTS: In Morphometry, the furrow count in the vertical section (VFC), the coefficient of the developed skin surface (CDSS) and mean width at maximal interception (MWMI) showed a tendencies to decrease with ageing.Irregularity of shadow shape (ISS) showed a tendency to increase with ageing. In Densitometry, the mean surface roughness(Ra) and mean depth of roughness(Rz) showed a tendency to increase with ageing. On histogram analysis, skewness was decreased with ageing but kurtosis did not show any significant changes. CONCLUSION:Ra, Rz, and ISS have shown a tendency to increase in the ageing processes (p<0. 05). VFC, CDSS, MWMI and skewness showed tendencies to decrease with ageing but the results were not statistically significant. The different results between morphometry and densitometry are likely to be due to increrr ent angles in the skin furrows with ageing.
Axis, Cervical Vertebra
;
Densitometry
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Forearm
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Humans
;
Male
;
Silicones
;
Skin*
4.The Effects of Bleopuncture Technique in the Treatment of Warts.
Korean Journal of Dermatology 1994;32(3):446-450
BACKGROUND: The warts may promptly return despite being treated with a myriad of destructive methods. The most successful treatment has been the intralesional injection of bleomycin sulfate, but unplessant side effects caused by the difficulty of infiltrating only the wart tissue have limited its use. OBJECTIVE: Our purpose was to determine the effects of bleopunciure technique in the treatment of warts. METHODS: We performed a multiple puncture technique using a 25 gauge hypodermic needle to introduce bleomycin hydrochloricle into warts. RESULTS: This technique resulted in elimination of 91.4% of a random series on 105 warts after a single treatment. Recurrence and side effects were not observed during a 1 year follow-up period. CONCLUSION: We experienced a superior technique for introducing Heomycin into the wart, which has resulted in the cure of a signficant number of warts following a sing treatment.
Bleomycin
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Follow-Up Studies
;
Injections, Intralesional
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Needles
;
Punctures
;
Recurrence
;
Warts*
6.The keratolytic effect of several enzymes and irritants.
Korean Journal of Dermatology 1993;31(3):337-340
BACKGROUND: Several keratolytic agents have been used in many dirmatologic conditions such as callus, keratosis palmaris of plantaris, however the evaluation method of the effects of keratolytiic agents has not been good enough in clinical use. OBJECT: We have conducted an investigation to measure the effect of several keratolytic agents using an in vitro model. METHOD: We measured the fegraded protein of keratin by the bui iet method after adding enzymes such as trypsin, pepsin and papain, and irritants, salicylic acid and sodii m lauryl sulfate to the collected callus. RESULT: The order of the keratolytic effect of the enzymes was trypsir >pepsin>papain. It was difficult to detect the keratolytic effect of salicylic acid becaues of color hiidrance and there was an increasing tendency of keratolyti effect of sodium lauryl sulfate, however it was prominent mainly at a high concentration. CONCLUSION: These results suggested that the potency of similar types of keratolytic enzymes such as pepsin, trypsin and papain can be possible. However it was not such a sitable model to check the potency of the keratolytic effect of salicylic acid and the eoncentration tevel may be an important factor for certain kinds of chemicals such as sodium lauryl sulfate.
Bony Callus
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Irritants*
;
Keratolytic Agents
;
Keratosis
;
Papain
;
Pepsin A
;
Salicylic Acid
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Sodium Dodecyl Sulfate
;
Trypsin
7.Extraperiosteal paraffine plombage thoracoplasty for pulmonary tuberculosis.
Myong Kil CHOI ; Jong Chul REE
Tuberculosis and Respiratory Diseases 1992;39(1):73-78
No abstract available.
Paraffin*
;
Thoracoplasty*
;
Tuberculosis, Pulmonary*
8.Factors Affecting Complicance in Amblyopia Occlusion Therapy.
Chul Young CHOI ; Hae Ran CHANG
Journal of the Korean Ophthalmological Society 2000;41(12):2633-2637
No Abstract Available.
Amblyopia*
9.The Transmittance of UVA and UVB on Human Epidermis.
Yoo Won CHOI ; Hyung Chul KANG
Korean Journal of Dermatology 1997;35(3):485-490
BACKGROUND: Ultraviolet light induces sunburn, ageing of the skin, pigmentation and even promotes skin cancers. As there has been a recent decrease in the ozone layer surrounding the earth, increasing attention has been given to the effects of ultraviolet light on the skin. Through human epidermis, ultraviolet light is reflected, scattered, absorbed or transmitted. In caucacians, the rate of transmitted ultraviolet light A from the epidermis to the dermis is 50% and the rate of transmitted ultraviolet light B is below 10%. OBJECTIVE: The purpose of this study was to evaluate the transmittance of UVA and UVB on Korean normal epidermis. METHODS: Pure epidermis was obtained from normal human epidermis by suction of blisters in 12 patients with vitiligo. All specimens were irradiated respectively with UVA and UVB and the amount of transmitted energy was measured. RESULTS: 1. The transmittance of UVA energy density by normal epidermis was 47.7+11.2% of irradiated UVA energy. 2. The transmittance of UVB energy density by normal epidermis was 32.4+3.4% of irradiated UVB energy. CONCLUSION: UVA energy transmission through normal epidermis of Korean is less than those of Caucacians but UVB energy transmission through nor mal epidermis of Korean is more than those of Caucacians. It is suggested that this could be an important basic data to study for photoaging and photoprotection in Korean population.
Blister
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Dermis
;
Epidermis*
;
Humans*
;
Pigmentation
;
Skin
;
Skin Neoplasms
;
Stratospheric Ozone
;
Suction
;
Sunburn
;
Ultraviolet Rays
;
Vitiligo
10.A study of dermatosis and skin care in the geriatric population.
Korean Journal of Dermatology 1993;31(4):459-464
BACKGROUND: With the development of medical science and technology, the proprotion of the aged has been significantly increasecl. Therefore it needs to be studied the fuadamental epidemiologic survey of dermatologic diseases and akin care in the elderly. OBJECT: Our purpose was to provide clinically relevant data regaring both dermatologic diseases and skin care in the aged population. MEHTODS: Total 172 volunteers aged 51 to 90 were enrolled in a study of 32-item questionnaire and total cutaneous examination. RESULTS: The sex ratio of male to female of 172 elderly volunteers as 1:1.4 and population of 7th and 8th decades occupied 76.5% with their mean age 74.4. The dermatologic findings which showed higher incidence in this study were seborrheic keratosis, senile lentigines, xerosis, cherry angioma, and generalized pruritus. Through the interviews of 172 elderly, the mot fequent dermatologic complaint was generalized pruritus. As the mean age of the population increasec, the number of the population showing xerosis and complaing of pruritus was elevated(r=0.976. 0.917 respectively). And there was a significant stastical correlation between the finding of xerosis and the the presence of pruritus(P<0.005). CONCLUSION: This study suggests that dermatologic problems in the elilerly are very common ancl further dermatologic studies including substantial medical care will be needed.
Aged
;
Epidemiology
;
Female
;
Hemangioma
;
Humans
;
Incidence
;
Keratosis, Seborrheic
;
Lentigo
;
Male
;
Prunus
;
Pruritus
;
Sex Ratio
;
Skin Care*
;
Skin Diseases*
;
Skin*
;
Volunteers