Enterotoxigenic B. pagilis (ETBF) strains which produce a 20 kDa zinc metalloprotease toxin (BFI) have been associated with diarrheal disease of animals and young children. Using B. pngilis toxin gene (bfi) from strain 86-5443-2-2 (piglet isolate) as a probe, the gene was identified in 74/77 human and animal ETBF strains but only 2/97 non-toxigenic B. fragilis (NTBF) strains. The region flanking bp was mapped with several restriction enzymes and 8 resriction fragments aacent to bft were used to probe colony blots of 77 KTBF and 97 NTBF strains. All 74 bft-positive ETBF strains hybridized to the 8 probes spanning a ca. 18 kb chromosomal region; however, this 18 kb region was absent in the 3 ETBF strains lacking p, and 47 of the 97 (48%) NTBF strains lacked the entire 18 kb region. Of note, the 2 NTBF strains containing btf did not have a ca. 12 kb region upstream of btfp. A ca. 9 kb fragment flanking the btf gene has been sequenced. Analysis of this data revealed several open reading frames (ORF) of which 3 are of particular interest (ORFs 1, 2 and 3). ORF1 and ORF3 encode proteins with significant homology to mobilization proteins, and ORF2 encodes a protein with significant homology to metalloprotease proteins, but only 50% similarity and 30% identity to BFf. These results suggest: 1) the btf genes are flanked by at least 18 kb of DNA largely unique to ETBF strains indicating a putative pathogenic island, 2) another metalloprotease protein present in ETBF strains may contribute to the pathogenicity and variable virulence of these diarrheagenic strains and 3) the pathogenic island may be mobiTized among different Bacteroides strains, and possibly among different species of intestinal bacteria.
Animals ; Bacteria ; Bacteroides fragilis* ; Bacteroides* ; Child ; DNA ; Genomic Islands* ; Humans ; Open Reading Frames ; Virulence* ; Zinc

Nineteen years old female with typical pseudoxanthoma elasticum without family history of the disease, and 26 years old male with characteristic clinical and histopathologic findings of Groenblad-Strandberg syndrome and family history of pseudoxanthoma elasticum in his 9 years old sister were presented.
Adult ; Child ; Female ; Humans ; Male ; Pseudoxanthoma Elasticum* ; Siblings

A clinical study was done on 43 patients witb basal cell carcinoma encountered in the Department of Dermatology, Busan National University Hospital during the past 10-years period frorn January 1968 to December 1977. Tbe results were summarized as follows: 1) Of 43 patients, 15 ceses were male and 28 cases were female with ratio of 1: 1.87. 2) Age incidence ranged frorn 15 years to 87 years with the highest incidence rate in the age group 40-49 years and incidence rate increased remarkbly in numlxr after over 40 years of age. Average age was 55 years. 3) The most common site was face occuring in 39 casts(90.7%), comprising 18 cases on nose, 12 cases on eyelids, 6 cases on cheeks, each 1 case on forehead, upper lip and auricle. 4) Noduloulc rative lesion was most common, otscrved in 29 cases(67.4%), nodular lesion in 9 cascs(20.9%), and pigmented lesion in 5 csses(11.6%). 5. The ratio of basal cell carcinoma was 1:1.2. 6) Three cases of precancerous states including 2 cases of xeroderma pigmentosa and 1 case of irradiated skin lesion were observed.
Busan ; Carcinoma, Basal Cell ; Cheek ; Dermatology ; Eyelids ; Female ; Forehead ; Humans ; Ichthyosis ; Incidence ; Lip ; Male ; Nose ; Skin

A case of verrucous hemangiorna appearing 22-year old male as presented, The clinical lesion was wart-like and hyperkeratotic scaly plaque with satellite lesions occurring over the right side of the skin. Histopathological examination showed hyperkeratosis, papillomatosis, irregular acanthosis, and capillary hemangiomatous features in the dermis and subecutantous tissues.
Capillaries ; Dermis ; Hemangioma* ; Humans ; Male ; Papilloma ; Skin ; Young Adult

The authors studied thirty-three cases of malignant tumors of the skin (24 squamous cell carcinomas, 6 basal cell carcinomas, 2 Paget's diseases and one malignant melanoma) at the department of dermatology, Pusan national university hospital during the period from 1966 to 1971. The results obtained were summarized as follows: 1) There were 21 men(63.6%) and 12 women(36.3%) in this series. 2) The average age of these patients was 56 years with a range of 33 years to 70 years. 3) The ages at onset ranged from 29 to 66 years with the peak incidence in the 50-59 years group. 4) Of the 33 cases, 28 cases were first diagnosed at the age of over 40 years. 5) The ratio of squamous cell carcinoma versus basal cell carcinoma was 4: l. 6) In 29 patients the tumors occurred on the exposed areas of the body and the most common predilection site was on the face (63.6%), of which 6 squamous cell carcinomas occurred on the upper lip. 7) Of the 30 cases of both squamous cell carcinomas and basal cell carcinomas, 20 cases (66.6%) showed ulcerative lesions measuring from less than 1cm to 10cm in diameter. 8) Two cases of the tumors (one squamous cell carcinoma and one malignant melanoma) showed metastasis at the time of diagnosis. 9) The accuracy of clinical diagnosis in this series was 96%. 10) Of the 24 cases of squamous cell carcinomas, 7 cases were treated with radiotherapy, 5 cases with curettage and electrodesiccation followed by radiotherapy. Four squamous cell carcinomas and two basal cell carcinomas that showed relatively superficial and small lesions measuring less than 1.5cm in diameter were treated with electrodesiccation and curettage and are under observation with favorable results for six months to two years.
Busan ; Carcinoma, Basal Cell ; Carcinoma, Squamous Cell ; Curettage ; Dermatology ; Diagnosis ; Humans ; Incidence ; Lip ; Neoplasm Metastasis ; Radiotherapy ; Skin* ; Ulcer

Three cases of linear scleroderma with typical clinical and histopathological findings were presented. Case 1: A 10 year old female had a "coupe de sabre" type of linear scleroderma on the right side of the frontal scalp and face and hemiatrophy of the right side of the face. Case 2: A 10 year old female had a type of scleroderma en bande on the palm and dorsum of the left hand and clubbed finger of the left third finger. Case 3: A 21 year old male had a linear type of skin atrophy and sclerosis of the right lower exteremity and mild walking disturbance.
Atrophy ; Child ; Female ; Fingers ; Hand ; Humans ; Male ; Osteoarthropathy, Secondary Hypertrophic ; Scalp ; Scleroderma, Localized ; Sclerosis ; Skin ; Walking ; Young Adult

Three cases of linear scleroderma with typical clinical and histopathological findings were presented. Case 1: A 10 year old female had a "coupe de sabre" type of linear scleroderma on the right side of the frontal scalp and face and hemiatrophy of the right side of the face. Case 2: A 10 year old female had a type of scleroderma en bande on the palm and dorsum of the left hand and clubbed finger of the left third finger. Case 3: A 21 year old male had a linear type of skin atrophy and sclerosis of the right lower exteremity and mild walking disturbance.
Atrophy ; Child ; Female ; Fingers ; Hand ; Humans ; Male ; Osteoarthropathy, Secondary Hypertrophic ; Scalp ; Scleroderma, Localized ; Sclerosis ; Skin ; Walking ; Young Adult

This study was performed with 31 cases of cutaneous tuberculosis among 18,846 cases of out-patients in Dermatologic Department of Busan National Universicy Hospital from 1967 to 1976. These 31 cases were consistent with skin tuberculosis in histological and clinical findings. The results were as follows. 1. The incidence of skin tuberculosis is 0.16%, among 18,846 cases of outpatients, 2. The localized tuberculosis of the skin, i.e. lupes vulgaris, tuberculosis verrucosa cutia and scrofuloderma was more common than disseminated type of tuberculosis of the skin. Among the disseminated types, papulonecrotic tuberculid is rather common than other types. 3. The ratio between male and female was l. 2: 1. 4. The age of onset varied according to types, but 70% of all cases occurred in the age group between 10-30 years. 5. Lung tuberculosis was associated in abaut 20 of skin tuberculosis. 6. Tubercle and tuberculoid structure were noticed in all biopsy specimens ancl in 55% the caseation necrosis was noticed.
Age of Onset ; Biopsy ; Busan ; Female ; Humans ; Incidence ; Lung ; Male ; Necrosis ; Outpatients ; Skin* ; Tuberculosis ; Tuberculosis, Cutaneous*

Familial Renign Chronic Femphigus(FRCP) is rare, persistent and vesicobullous genodermatoai. Three casee of FRCP with typical clinical and histapathological findings are reported. The first case of FBCP was 27-year-oId man who had recurrent episodes of grou vesicles and rust with miId pruritue at the posterior neck, in both axillae and in inguinal area for 10 years. The second case was 49-year-old woman with skin lesions of recurrent persistent. vesicles, pustules on the erythematous skin, crust and lichenification on the flexural area of extrimeties, axillae, ingumal and neck area for 10 yeara. The third case was 49-year-old male patient who had recurrent pruritic grouped vesicles with crust on the neck and axillary area. In all three patients, skin eruptions usually began and or aggravated in the spring or summer and tend to heal spontaneously in the autumn and winter and showed positive Nikolsky sign. The only one case of the reported three casea had familiaI history of skin lesions similar to FRCP. Histopat,holag;ic finding of biopsy specimens from the vesicular eruption showed auprabasal vesiculation with acantholysis, lacunae and villi formation in all 3 cases.
Acantholysis ; Axilla ; Biopsy ; Female ; Humans ; Male ; Middle Aged ; Neck ; Pemphigus, Benign Familial* ; Skin

We reported a case of epidermodysplasia verruciformis which occurred in a 15 year-old girl. She had an extensive eruption of plane warts on the face, neck, upper trunk, and extremities, especially on the dorsa of the hands and feet, with symmetrical diatribution. The skin lesions appeared initially on the forehead and gradually generalized. all over the body for 10 years duration. Skin biopsy showed hyperkeratosis with basket-weave pattern, thickened granular layer, vacuolization of many celIs in the upper stratum malpighii and the granular layer and acanthosis.
Adolescent ; Biopsy ; Epidermodysplasia Verruciformis* ; Extremities ; Female ; Foot ; Forehead ; Hand ; Humans ; Neck ; Skin ; Warts