Effects of DMSO on the Active Sodium Transport Across Frog Skin / 대한피부과학회지

As an attempt to evaluate any possible effects of dimethylsulfoxide (DMSO) on the phenomena of membrane transport, effects on the short-circuit current (SCC) and potential difference (PD) across the isolated frog skin were studied under the conditions of various bathing medium, Changes of SCC and PD were measured by the method described by Ussing and Zerahn. Addition of DMSO to the inside bathing medium resulted in an initial increase in SCC followed by a secondary decline to pre-DMSO level, while DMSO at outside medium was without effect. Dose-responses(SCC) relationship revealed a linear one from 30 to 60 mM. Substitution of chloride by sulfate ion from bathing medium caused no alteration in the basic pattern and magnitude of response, thus indicating the specificity of DMSO action on the Na transport. Hypertonic solutions of DMSO added to either outer or inner bathing medium evoked a prompt fall in SCC and PD consistently. By isotopic measurement of sodium fluxes with Na24, it was evident that increased sodium influx was entirely responsible for the initial increase in SCC induced by DMSO. Of various parameters concerned with transepithelial Na transport, outer membrane permeability to Na (PoNa) was shown to be the onIy parameter which was significantly elevated by DMSO administration. From these findings, it was postulated that DMSO-induced increment in sodium influx was mediated by its stimulating action on the sodium penctration through the outer permeability barricr after binding to a receptor site different from that for the antidiuretic hormone (ADH.)

One Case of Poikiodermatomyositis / 대한피부과학회지

The authers observed one case of typical poikilodermatomyositis who was 47 year old female. The poikiIodermatomyositis is a rare disease which is a variant of dermatomyositis and has never been reported in Korea. This patient complained of a weakness of left lower leg and tingling sensation of both fingers since one year ago, And she has a difficulty of both finger flexion since 20 days ago. The skin lesions revealed mottled dark brownish pigmentation, hardness, scattered atrophic patches and telangiectasia in the lesion on the left lower leg since one year ago. The same skin changes appeared on the thigh, lower abdomen and upper chest on 4 months ago. Histopathologically, a biopsy was performed from the skin of lower leg, the skin shows typical poikiloderma, i.e. the epidermis shows moderate atrophy of the stratum malpighii, flattened rete ridges and hydropic degeneration of the hasal cells. The dermis is edematous and a band like dense lymphocytic cellular infiltration. And the muscIe biopsy from gastrocnemius muscle shows dermatomyositis finding which the muscle bundles are edematous and degenerative. Many inflammatory cells present between muscle bundles but there is no suppurative change. Diagnosis was confirmed by clinical appearance, histopathologically and other laboratory studies. The patient was markedly improved by the prednisolone 80 mg and vasculat (vascular dilatator) 100 mg daily.

One Case of Poikiodermatomyositis / 대한피부과학회지

The authers observed one case of typical poikilodermatomyositis who was 47 year old female. The poikiIodermatomyositis is a rare disease which is a variant of dermatomyositis and has never been reported in Korea. This patient complained of a weakness of left lower leg and tingling sensation of both fingers since one year ago, And she has a difficulty of both finger flexion since 20 days ago. The skin lesions revealed mottled dark brownish pigmentation, hardness, scattered atrophic patches and telangiectasia in the lesion on the left lower leg since one year ago. The same skin changes appeared on the thigh, lower abdomen and upper chest on 4 months ago. Histopathologically, a biopsy was performed from the skin of lower leg, the skin shows typical poikiloderma, i.e. the epidermis shows moderate atrophy of the stratum malpighii, flattened rete ridges and hydropic degeneration of the hasal cells. The dermis is edematous and a band like dense lymphocytic cellular infiltration. And the muscIe biopsy from gastrocnemius muscle shows dermatomyositis finding which the muscle bundles are edematous and degenerative. Many inflammatory cells present between muscle bundles but there is no suppurative change. Diagnosis was confirmed by clinical appearance, histopathologically and other laboratory studies. The patient was markedly improved by the prednisolone 80 mg and vasculat (vascular dilatator) 100 mg daily.

Topical Treatment of Verrucae and Molluscum Contagiosum with Cantharidin / 대한피부과학회지

The pathologic changes of verrucae and molluscum contagiosum are limitted chiefly to epidermis, therefore treatment with cantharidin which forms acantholytic bulla is successful. Canthrides is dried, powdered blister beetle, and cantharidin is its purified active ingredient. Its primary cutaneous effect is acantholysis and death of epidermal cells. For topical treatment, catharidin was prepared as a 0.9% solution in mixture of 50% of acetone, 25% of ether and 25% flexibIe collodion U.S.P. The therapeutic efficacy of cantharidin was excellent to eliminate the lesions of verrucae and molluscum contagiosum, showing the complete recovery of 114 out of 117 lesions of verrucae, and 520 out of 550 lesions of molluscum contagiosum with 1 to 3 topical applications. From the above results, it should be pointed out that cantharidin has the several advantages at clinical uses for the treatment of verrucae and molluscum contagiosum: 1 No residual scarring. 2. No pain. 3. Excellent therapeut!c efficacy.

Two Cases of Lichen Amyloidosis / 대한피부과학회지

Lichen amyloidosis is a chronic, benign and relatively rare disease, but not infrequent in Korea. The patients with lichen amyloidosis visited to Dermatologic Department of Severance Hospital in 1969. The results of clinico-pathological findings observed in above patients were presented. Case 1-A 56 year old farmer has been suffered from pruritic lichenoid papules which developed in the right pretibial area for 10 years. These papules were reddish-brown in color, 1 to 2mm in. diameter and closely aggregated. The whole gross lesion measured 10 by 25 cm. Cases 2-A 32 year old obese house-wife complained of pruritic eruptions in the right pretibial area for 3 years. Shiny firm papules, measuring approximately 2 mm in diameter, were red in color and gross entire lesion was estimated to 7 by 10 cm. Histological examination by employing the stain method of crystal violet and the Nomland test demonstrated the amyloid mass in the papillary portion of dermis. All laboratory studies including complete blood count (CBC), chest X-ray, sedimentation rate, urinalysis (including test for Bence Jones protein), blood glucose, blood urea nitrogen (BUN), serum cholesterol, venereal disease research laboratories test for syphilis (VDRL), stool for occult blood, serum protein electrophoresis, electrocardiogram (ECG) and intravenous congo red test, were within normal limit. The therapeutic results were not promissing, however itching and lichenoid papules were disappeared during the treatment with steroid cream for occlussive dressing therapy.

Linear Basal Cell Nevus: Report of One Case / 대한피부과학회지

The author observed one case of typical Linear bassal cell nevus who was 3 year old girl. Since birth, skin lesions reveal a linear band like nodules along the left lateral margin of nose, which are consists of pinhead sized, normal skin colored, pearly and translucent papules. Histopathologically, the preparations showed muItifocal irregular masses of basal type epithelial cells in continuity at pilosebaceous follicles and the cells were oval or spindle shaped and a peripheral palisade arrangement. But comedones and nevus cells were not identified. Diagnosis confirmed by clinical appearance, histopathologically and other clinical study. There were marked improvement by the locaI application of 2% 5-Fluorouracil solution.

Malignant Acanthosis Nigricans Associated with Severe Oral Florid Papilloma / 대한피부과학회지

One case of malignant acanthosis nigricans associated with internal malignany and oral florid papilloma has been presented and reviewed the subject of malignant acanthosis nigricans. The patient who was 34 year old man had been affected generalixed dark brownish hyperpigmentation with papillomatoses especially on forehead, neck, axillae, umbilical area, anogenital area, webs of fingers, palms and soles. And characteristically it was associated with severe florid papilloma on mucous membrane such as buccal mucosa, lip and glans penis. Histopathologically, internal malignancy was confirmed metastatic adenocarcinoma of stomach after autopsy, although previous biopsy finding was squamous cell carcinoma when explorative laparatomy was done. The response to Bleomycin, new antibiotic anticancer drug, followed by intravenous injection is good and satisfying. But the patient died due to sudden pulmonary hemorrhage which are serious side effect of Bleomycin.

Incontinentia Pigmenti: Report of 4 Cases in a Family / 대한피부과학회지

Four cases of incontinentia pigmenti (Bloch-Sulzberger type) in a mother and three her daughter were presented and literatures were reviewed. In all three daughters vesicles appeared on toes at three weeks after birth and ehanged to pigmented patches surrounded by erythematous verrucous margin, which were then gradually spread to whole body. Pigmentation is dirty, irregular and bizarr. Severe itching sensation was complained and vesicles or bulla were formed easily due to scratching and external trauma. In mother, onset of the disease was not clear but generalized dirty pigmentation is showed. Dentition was delayed in 3rd daughter (Dental eruption was begun at 10 month old and 11 teeth was showed at now, 2 year old). Histopathological findings are compatible with incontinentia pigmenti and epidermo-dermaI separation is observed in a experimentally induced bullae, indicating a characterized epidermolysis bullosa. Strict limitation in the occurence of disease in females of one family, accompanying with epidermolysis bullosa simplex is unusual and interesting in genetical aspects and pathogenesis.