The chromatic activity and potency of various sympathomimetic amines were examined in the normal frogs using the Hogben and Slome Index as a simple method for measuring melanophore responses. All the sympathomimetic amines tested in this experiment exhibited the marked aggregation of melanophores. Among these amines, the order of potency in producing the melanophoreaggregation was catecholethylamine derivatives (epinephrine and isoproterenol) monohydroxyphenylethylamine derivative (tyramine) with exception of phenylephrine>nonhydroxyphenyletyhlamine derivatives (ephedrine and propadrine). Of catecholethylamine derivatives, thc melanophore-aggregating activity of epinephrine was more potent than that of isoproterenol. On the other hand, phenylephrine belong to the monohydroxyphenylethylamine derivatives was the least potent agent than the other amines tested.
Amines ; Dronabinol ; Epinephrine ; Hand ; Isoproterenol ; Melanophores* ; Phenylephrine ; Skin* ; Sympathomimetics*

Incontinentia pigmenti acb.romians(Ito) is characterized by progressive bizarre or whorl-like hypopigmentation on trunk and extrementies during childhood. It is similar to a negative picture of incontinentia pigmenti(Blocb-Sulzberger) and not infrequently associated with mental, bony and ocular defects. The incidence of this disease is predominent in femaIe without hereditary background. Case 1. Two years old female was visited to our clinic because of mottled depigmented patches on right thigh for about 8 months. Case 2. 14 months oId female was visited to our clinic because of linear and. mottled depigmented natches on their limbs for about 7 months. Histopathological findings of both cases shows the focal depigmentation on basal layer. They are treated with steroid ointment with moderate to good effects.
Extremities ; Female ; Humans ; Hypopigmentation ; Incidence ; Incontinentia Pigmenti* ; Pigmentation Disorders* ; Thigh

In this study, the authors attempted to investigate distribution of the house dust mites in Korea on a nationwide scale. Mites were isolated and classified from 211 house dust samples which were collected from 7 urban areas and 3 rural areas. The result were as follows: 1) Nineteen species of mites were identified in this study including 4 new species which were not recorded in Korea. 2) The most frequent house dust mites were Pyroglyphid mites. Among then, Derntatophagoides farinae was found to be dominant species in Korea since this species was more widely distributed and more frequently found than D. pteronyssinus, 3) The occurence rates of Dermatophagoides sp. in the urban areas were higher than that in the rural areas, but vice versa in the occurence rates of other mites accidently found in the dust samples.
Dust* ; Korea ; Mites ; Pyroglyphidae*

Acrokeratosis verruciformis is a familial disease characterized by indolent papules resembIing flat warts on the backs of the hands and feet with lesser involvement of volar surfaces, wrists, and ankles. A cas of 42 years old female with acrokeratosis verruciformis is reported. The skin lesions of this patient showed numerous rice to pea sized, flat-topped, round or polygonal, warty papules on the dorsal aspects of the hands and feet and also, pitted keratolysis on both volar surface of the hands. The hitologic findings were those of features of acrokeratosis verruciformis, i.e. the epidermis shows marked hyperkeratosis with slight acanthosis and papillomatosis and circumscribed elevations of the epidermis resembling church spires characteristically.
Adult ; Ankle ; Darier Disease* ; Epidermis ; Female ; Foot ; Hand ; Humans ; Papilloma ; Peas ; Skin ; Warts ; Wrist

Letterer-Siwe disease is a non-lipid reticuloendotheliosis of unknown etiology and usually grouped with Hand-Schuller-Christian disease and eosinophilic granuloma as components of histiocytosis-X. It occurs mostly in infancy and, clinically it is the most generalliaed and serious. In recent years, the prognosis of infants with Letterer-Siwe disease has improved, primarily due to more aggressive therapy with corticosteroids and antimetabolic agents. The 14 months old male patient was admitted into the Severance Hospital on 15th, July 1974 for evaluation of a chronic and refractory skin eruptions, abdominal distension with diarrhea and edema on extremities. He had been well until 3 months old age when he developed seborrhea-like skin eruptions which did not improve on treatment for seborrhea. Vigorous treatment was started for the baby from the beginning of admission day. Routine laboratory tests, skin biopsy, bone marrow aspiration and radiologic studies for bony structures wer done. All those studies had showed severe anemia, thrombocytopenia, multiple bony defects in skull and numerous non-lipid histiocytic infiltration in skin and bone marrow all those were consist with Letterer-Siwe disease.
Adrenal Cortex Hormones ; Anemia ; Biopsy ; Bone Marrow ; Dermatitis, Seborrheic ; Diarrhea ; Edema ; Eosinophilic Granuloma ; Extremities ; Histiocytosis, Langerhans-Cell* ; Humans ; Infant ; Male ; Prognosis ; Skin ; Skin Tests ; Skull ; Thrombocytopenia

Two cases of Dandy-Walker syndrome are reported with emphasis on CT findings. The Dandy-Walker syndrome is known to be a developmental anomaly, which is a congenital cystic dilatation of the fourth ventricle due to atresia of foramen Magendie and possibly also foramen Luschka, associated with some form of vermian dysgenesis. The CT findings of one case reveal huge cystic mass in midline of the posterior cranial fossa with small compressed cerebellar hemisphere in the lateral portion, associated with hydrocephalus. The other shows semilunar-shaped cystic mass in posterior cranial fossa with anteriorly displaced cerebellum, which communicates with apparent fourth ventricle through the vallecula. Both cases show no inferior.
Cerebellum ; Cranial Fossa, Posterior ; Dandy-Walker Syndrome ; Dilatation ; Fourth Ventricle ; Hydrocephalus

BACKGROUND: There has been a change in the causes of aortic stenosis when comparence of rheumatioc aortic stenosis in recent year. Therefore, we studied the etiology factor of pure aortic stenosis. METHODS: The gross surgical pathologic features of the aortic valves were reviewed in 92 patients with pure aotic stenosis whom underwent aortic valve replacement at Yonsei University, Cardiovascular center between July 1989 and June 1994. RESULTS: The three most frequent causes were 1) calcification of congenital bicuspid valve in 30%, 2) degenerative calcification of aortic valve in 22%, 3) rheumatioc valvular change in 48%. The mean age at the time of aortic valve replacement for the entire series of patients was 54.4 years. The range of age was from 18 years to 77 years. Males predominated for degenerative disease and congenital bicuspid valves, but there were reversed rheumatic origin. One or more complications occured in 17% of patients undergoing operation. The surgical mortality was 3.3%. CONCLUSION: Our data suggest that more common cause of aortic stenosis is non-rheumatic disease rather than rheumatinc origin.
Adult* ; Aortic Valve ; Aortic Valve Stenosis ; Constriction, Pathologic* ; Humans ; Male ; Mitral Valve ; Mortality

Ants(Family Formicidae) are very successful organisms occuring in trernendous numbers worldwide in terrestrial habitats. All ant species may bite, and on species sting. 48 species in 26 genus have been reported in Korea, but only systemic reaction induced by the anti Brachyponera chinersis, has been reported in the Korea terature. A 48 year old man was stung on the neck, abdomen, and dorsum of the hand by flying stinging ants. He experienced moderate pain, burning and itching sensation. Clinical course and histopathologic findings of the lesions caused by the stinging ant was observed without specific treatment. The stinging ants collected from t,he patient.s skin and his house were identified as Euponera chosensis belonging to Subfamily Ponerinae. To the best of our know ledge, this is the first clinical repor of the insect sting by Euponera chosensis in the Korean literature.
Abdomen ; Ants ; Bites and Stings ; Burns ; Diptera ; Ecosystem ; Hand ; Humans ; Insect Bites and Stings* ; Insects* ; Korea ; Middle Aged ; Neck ; Pruritus ; Sensation ; Skin

The present study was designed to obtain omparative data on in vitro antifungal activities of imidazole derivatives. Minimum inhibitory oncentrations of clotrimazole, miconazole, econazole, ketoconazlole and griseofulvin on 4 strains of Trichophyton mentagrophytes, 3 strains of Trichophyton rubrum, 2 strains of Microsporum canis and ] strain of Sporothriv: schenckii were etermined after 3 week' incubation at room temperature on Sabouraud's dextrose liquid media. In addition, the fungicidal activities of miconazole and econazole were tested against Z'richophyton mentagrophytes and Microsporum canis, using the techniques described by Vanbreuseghern(1967) The results are summarzed as follows: ] In most of the dermatophytes studied, 1 to 10 pg/ml of M1C were detected. Diverse susceptibility pattern was observed among different fungal species, but no or minor variability was noted within the same species. The susceptibility of Z'ri- chophyton rubrum showed at MIC of 0. 01 to 10 pg/ml, T ichophyton mentagro- phyt.es and Mic osporum canis at 0.1 to 10 pg/ml and 0. 1 to 1000 gg/ml respec- tively. The Trichophyton rubrum was the most sensitive. In the susceptibility test of Sporothrix schenckii, the high resistance to clotrimazole and griseofuhin was observed. The fungistatic activities of miconazole, econazole and ketoconazole were observed only at concentrations higher than JpQ pg/ml.
Arthrodermataceae ; Clotrimazole ; Econazole ; Glucose ; Griseofulvin ; Ketoconazole ; Miconazole ; Microsporum ; Sporothrix ; Trichophyton

This study was undertaken to clarify whether the color changes of skin in summer are remarkable or not. The skin color of abdomen, extensor and flexor of forearm, forehead, and cheek were measured in 27 health male students who had never tanned their skin intentionally during this experiment with Color and Color Difference Meter(Nippon Denshoku Kogyo Ca. CP6R 1001-DP) which represents skin color as 'L', 'a', and 'b' values. The 'L', 'a', and 'b' values mean the degree of lightness, redness, and yellowness respectively. Measurements had been performed four times repeatedly from summer(june) to auturmn(October) with intervals of 6 weeks. The obtained values were evaluated with statistical method, and the results were sumrnarized as follows: l. Abdominal skin showed no significant color changes in this experiment. 2 Extensor and flexor skin of forearm showed significant decrease in lightness from July, and the degree of decrease was more remarkable on extensor skin than on flexor skin. The lighteness had not been recovered by October on extensor skin and by September on flexor skin. There was no significant change in redness and yellowness on both places in this experiment. 3. Forehead skin showed no significant change in lightness and yellowness in this experiment, and showed transient decrease in redness in July. 4. Cheek skin showed no significant change in lighteness and redness in this experiment, and showed transient increase in yellowness in October.
Abdomen ; Cheek ; Forearm ; Forehead ; Humans ; Intention ; Male* ; Skin* ; Triacetoneamine-N-Oxyl