1.Immunohistochemical Study of bcl - 2 Expression in Basal Cell Carcinoma.
Korean Journal of Dermatology 1997;35(2):242-248
BACKGROUND: Basal cell carcinoma(BCC) is the most common tumor of light-skinned people. Most of them are relatively innocuous, but some may cause extensive tissue destruction, and result in death by local infiltration of vital structure or metastatic disease. The bcl-2 is a protooncogene involved in tumorigenesis by blocking apoptosis or programmed cell death. OBJECTIVE: To investigate whether there was a difference in bcl-2 expression in different histopathological types of BCC. Method: We performed immunohistochemical staining by using a monoclonal mouse anti-human bcl-2 oncoprotein in 28 BCC(nodular: 7 cases, micronodular; 3 cases, adenoid; 1 case, infiltrative; 9 cases, and mixed; 8 cases). Result: All 28 BCC expressed bcl-2, and the degree of staining was different according to histopathological types; poor prognostic micronodular(100%) and infiltrative(73.3%) types were relatively strong, and nodular(66.7% ) and adenoid(75.0%) types were moderate. Conclusion . These results suggest that the degree of bcl-2 expression in BCC seems to be dependent to the histopathological types together with clinical behavior.
Adenoids
;
Animals
;
Apoptosis
;
Carcinogenesis
;
Carcinoma, Basal Cell*
;
Cell Death
;
Mice
2.A clinical study on ectopic pregnancy.
Yong Mi LEE ; Young Joo CHOI ; Kyu Ho JEUNG ; Young Keon YO ; Kyu Hong CHOI
Korean Journal of Obstetrics and Gynecology 1993;36(7):1369-1375
No abstract available.
Female
;
Pregnancy
;
Pregnancy, Ectopic*
3.A case of thoracophagus diagnosed by abdominal ultrasonorgaphy at second trimester.
Young Joo CHOI ; Yong Mee LEE ; Kyu Ho CHUNG ; Sang Cheol PARK ; Kyu Hong CHOI
Korean Journal of Obstetrics and Gynecology 1992;35(8):1228-1232
No abstract available.
Female
;
Humans
;
Pregnancy
;
Pregnancy Trimester, Second*
4.A Zosteriform Network of Eccrine Spiradenoma.
Yoon Yae CHOI ; Kyu Suk LEE ; Joon Young SONG
Annals of Dermatology 1992;4(2):139-142
Eccrine spiradenoma is clinically characterized by a solitary, movable, tender nodule occurring most frequently on the ventral surface of the upper body. A striking symptom is paroxysmal pain. Occasionally multiple lesions may be present and may occur in a linear or zosteriform pattern. A 48-year-old female was seen with painful or tender, nomal skin colored, firm nodules distributed in a zosteriform pattern on the right thigh for 10 years, which had been slowly growing. The histopathological features were quite a characteristic of eccrine spiradenoma. We report a rare case of zosteriform network of eccrine spwadenoma occurred on the right thigh.
Female
;
Humans
;
Middle Aged
;
Skin Pigmentation
;
Strikes, Employee
;
Thigh
5.Richter's Syndrome: A Case report.
Han Young LEE ; Kyu Rae KIM ; I J CHOI
Korean Journal of Pathology 1986;20(3):355-358
Richter's syndrome is generally accepted taht lymphoma or leukemia of low grade malignancy, during their course, may alter both their morphologic and clinical appearance and evolve into highly malignant neoplasia. The pathogenesis is not clear, however, dedifferentiation by the emergence of a new clone of cells of higher maligancy similar to the blastic transformation in chronic myelocytic leukemia is suggested as possible mechanism. A case of Richter's syndrome is described. This 45 year old female had been diagnosed as chronic lymphocytic leukemia by absolute peripheral lymphocytosis 5 months before, developed sudden severe abdominal pain and was received segmental resection of ileum under the clinical impression of intestinal perforation with peritonitis. Histologically, the ulcer margin was diffusely infiltrated by polymorphic cells composed of large atypical cells having vesicular nuclei, multinucleated giant cells and Reed-Sternberg like cells admixed with mature lymphocytes. These atypical and multinucleated cells of the paraffin section showed strong monoclonal immunoreactivity for IgG and lambda light chain by PAP method and was interpreted as malignant lymphoma, diffuse, large cell, immunoblastic, polymorphous.
Female
;
Humans
6.CYTOTOXICITY OF DENTAL CAST BASE METAL ALLOYS ON HUMAN ORAL KERATINOCYTES.
Young Jin CHOI ; Moon Kyu CHUNG ; Jong In YOOK
The Journal of Korean Academy of Prosthodontics 1999;37(6):717-729
Although many studies on the cytotoxicity of the dental cast metal alloys and their components have been carried out, the results are rather conflicting because of the different type of cells used and the various experimental procedures taken. Recently, a number of scientists have claimed that it would be preferable to focus on the use of cells from relevant specific location of the human bodies. Consequently, the primary cultured oral keratinocyte derived from oral mucous along with nickel chloride and several of widely used dental cast base metal alloys(two-Ni-Cr alloys and one Co-Cr alloy)in domestic were selected for this study, from which 1) The amounts of released metal ions were determined using atomic absorption spectrometry, 2) The cytotoxicity of nickel chloride and dental cast base metal alloys was evaluated via MTT assay, and finally, 3) The amounts of released metal ions and the cytotoxicity of nickel chloride were correlated with the cytotoxicity of dental cast base metal alloys And, the results were summarized as follows ; 1. Nickel ion from Ni-Cr alloys and Cobalt ion from Co-Cr alloys resulted in maximum releasing rate during first 24 hours, followed by a decrease in releasing rate with time. Chromium ion were found to be minimal in all alloys. 2. In cytotoxic test, with 40muM, 80muM of nickel chloride, there were observed an increase in the relative cell number compared to control samples after 24 hours. With 160muM, there was found to be no difference in the relative cell number with control, except that 48 hour showed a increase in relative cell number. With 320muM, the relative cell number remained constant and decreased after 48 hours, and with 640muM, a continuing decrease in relative cell number was observed throughout test period. 3. The sensitivity of primary cultured oral epithelium to nickel was lower compared to the cells used in other studies. 4. CB-80 Soft and Regalloy showed no cytotoxicity to primary cultured oral epithelium and New crown resulted in a slight cytotoxicity. In conclusion, it was shown that the primary cultured oral keratinocytes could be applied successfully as testing cells in cytotoxicity test. Futhermore, the dental cast base metal alloys used in this study were found to be biocompatible.
Absorption
;
Alloys*
;
Cell Count
;
Chromium
;
Cobalt
;
Crowns
;
Epithelium
;
Human Body
;
Humans*
;
Ions
;
Keratinocytes*
;
Nickel
;
Spectrum Analysis
7.A Case of Angiokeratoma of the Vulva.
Kyu Chong CHO ; Do Young CHOI ; Ui Sik JEON
Korean Journal of Dermatology 1988;26(1):116-121
We report s case of angiokeratoma of the vulva occuring in a 36-year-old woman. Numerous grayish dark purple papulovesicular lesions, ranging from 0.2 to 2.0mm in size, were observed on the right labium majus. All lesions were excised under local snesthesia after the diagnosis of angio keratoma was made histopathologically. No new lesions appeared during the follow-up period of one year.
Adult
;
Angiokeratoma*
;
Diagnosis
;
Female
;
Follow-Up Studies
;
Humans
;
Keratosis
;
Research Report
;
Vulva*
8.A Case of Metastatic Basal Cell Carcinoma.
Byoung Geun MIN ; Young Kyoon KIM ; Kyu Cherl CHOI
Korean Journal of Dermatology 1984;22(1):79-82
Basal cell carcinoma is the most common skin cancer, but it rarely metastasizes. Metastatic basal cell carcinoma (MBCC) is rare in terms of incidence as well as absolute numbers. We present a case of 67-year-old woman who had a dirty oozing, ulcerated, tumor mass on the vertex and suffered from dyspnea and mild lumbago. The diagnosis of MBCC was based on clinical, radiological, and histopathological findings. To our knowledge, the occurrence of MBCC has not been reported in the Korean literatures. So we reported herein this case of MBCC of the lung and the bone.
Aged
;
Carcinoma, Basal Cell*
;
Diagnosis
;
Dyspnea
;
Female
;
Humans
;
Incidence
;
Low Back Pain
;
Lung
;
Skin Neoplasms
;
Ulcer
9.The Effects of Basic Fibroblast Growth Factor(bFGF)on Type I and VII Collagen Gene Expression in Cultured Dermal Fibroblast.
Young Wook RYOO ; Dong Won CHOI ; Kyu Suk LEE
Annals of Dermatology 1999;11(3):147-152
BACKGROUND: bFGF, a member of the fibroblast growth factor family, potently induces vascular smooth muscle cell proliferation and decreased synthesis of the collagens. OBJECTIVE: For further investigation of the effect of bFGF on extracellular matrix homeostasis in the skin, we evaluated the expression of type I and type VII collagen gene at the transcriptional levels. METHOD: We examined that recombinant human bFGF affects the expression of genes involved in ECM synthesis and remodeling in human dermal fibroblasts cultures as judged by Northern blot analysis. RESULTS: The steady state levels of type I and VII collagen gene mRNA were decreased with age dependent pattern up to 0.13 and 0.44 folds respectively. The transcriptional levels of type I collagen mRNA were increased by TGF-B, treatment but markedly decreased by bFGF as well as TNF-a. But there were no synergistic effects bFGF and TNF-a on type I collagen gene expression. The levels of type VII collagen gene expression were increased by both bFGF and TGF-B,. The TNF-a showed slightly antagnostic effects on type VII collagen gene expression. CONCLUSION: The type I and VII collagen gene expression in dermal fibroblasts is clearly subjected to modulation by the cytokines including bFGF with uncoordinate regulatory pathway. In addition to its function of vascular proliferation, bFGF also may play a major role in physiologic skin condition and in repair process such as formation of a stable dermoepidermal junction during skin wound healing.
Blotting, Northern
;
Cell Proliferation
;
Collagen Type I
;
Collagen Type VII
;
Collagen*
;
Cytokines
;
Extracellular Matrix
;
Fibroblast Growth Factors
;
Fibroblasts*
;
Gene Expression*
;
Homeostasis
;
Humans
;
Methods
;
Muscle, Smooth, Vascular
;
RNA, Messenger
;
Skin
;
Wound Healing
10.A Case of Atrophie Blanche.
Kyu Suck LEE ; Do Young CHOI ; Soon Bong SUH
Korean Journal of Dermatology 1978;16(6):495-499
Atrophie blanche is a rare vasculitis reported by Milian in 1929, that is characterizel by small erythematous, telangiectatic purpura which developes central hemorragic curst or painful ulceration and heals with atrophic white scar several months later. It is seen more commonly in middle-aged women and become worse in summer. It manifests primarly on the lower legs, ankles and dorsa of the feet, rarely on the elbows and dorse of the hands, where are the areas of the poor blood circulation. This case was 45 year-old woman who had suffered from periodic painful ulceration on the legs, ankles, dorsa of feet k hands and. elbows for about 18 years. Histopathologic findings showed fibrinoid degeneration R partial occlusion in the capillaries and mild perivascular chronic inflammatory cells infiltration in the upper corium. The lesion was not so improved by systemic k local corticosteroid therapy for about 3 months,
Ankle
;
Blood Circulation
;
Capillaries
;
Cicatrix
;
Dermis
;
Elbow
;
Female
;
Foot
;
Hand
;
Humans
;
Leg
;
Middle Aged
;
Purpura
;
Ulcer
;
Vasculitis