PURPOSE: Tamoxifen has been well known as an effective anti-tumor agent against breast cancer. The important role of bcl-2 and p53 proteins in tamoxifen-induced apoptosis of breast cancer cells has been suggested. However, the paradoxical fact that bcl-2 over-expression is assdegrees Ciated with better prognosis in clinic has not yet been clearly explained. To investigate this paradox, we analyzed the effect and dynamics of bcl-2 and p53 on the apoptosis after treatment of breast cancer cells with tamoxifen. MATERIALS AND METHODS: The human breast cancer cell lines MCF-7 and MB MDA-468 were treated with 17-betaestradiol (E2) and tamoxifen. RESULTS: Following tamoxifen treatment, MCF-7 cells underwent apoptosis accompanied by reduced bcl-2 expression. E2 pre-treatment led to the inhibition of tamoxifen-mediated apoptosis and bcl-2 down-regulation. When MB MDA-468 cells were treated with E2 or tamoxifen, bcl-2 and p53 protein expression did not change and apoptosis did not develop. CONCLUSION: We observed that the down-regulation of bcl-2 by tamoxifen treatment can facilitate the apoptosis of breast cancer cells without p53 mutations. This finding was consistent with clinical experiences in which bcl-2 positive tumors were assdegrees Ciated with more indolent phenotypes in breast cancer.
Apoptosis* ; Breast Neoplasms* ; Breast* ; Cell Line* ; Down-Regulation ; Humans* ; MCF-7 Cells ; Phenotype ; Prognosis ; Tamoxifen

No abstract available.
Hyponatremia* ; Hypopituitarism*

Deposition of basement membrane extracellular matrix is influenced by adjacent tumor cells, and in some cases, the pattern of type IV collagen deposit is characteristic in malignant tumors. In this report, we analyzed the difference in type IV collagen deposition patterns between benign and malignant phyllodes tumors (PTs) of the breast. Of the 15 cases of PTs, 8 cases were benign PTs and 7 cases were malignant PTs. Three cases of other primary sarcomas of the breast (stromal sarcoma, angiosarcoma and osteosarcoma) and 2 cases of fibroadenomas were studied for comparison. The malignant PTs were distinguished from benign ones by increased mitotic figures, cellular atypism, and a higher proliferation index of stromal cells. Immunohistochemical staining against type IV collagen in malignant PTs revealed extensive to moderate deposition of type IV collagen around the small blood vessels in duplicate or multilayering pattern, while benign PTs showed minimal deposition in a single linear pattern. All of the three cases of other sarcomas revealed multilayering or meshwork pattern of type IV collagen around the blood vessels. The deposition of type IV collagen around the blood vessels may reflect the malignant behavior of the stromal tumors of the breast.
Adult ; Breast Neoplasms/blood supply/*metabolism ; Collagen/*metabolism ; Female ; Humans ; Middle Aged ; Retrospective Studies

Actinomycosis is a rare entity which presents some difficulties in establishing a correct preoperative diagnosis. Many actinomycotic pelvic infections in women are related to IUD use and the colonization rate appears to increase in accordance with the duration of IUD use. So, all women in IUD use are recommended to make cervicovaginal smear and pelvic infection associated with IUD use should be suspected to have actinomycoses. We report a case which presented painful mass on right upper and lower quadrant of abdomen of a 40-year-old women. We identified sulfur granules by histopathologic exam of surgically resected specimen. Eventually it proved to be pelvic and abdominal actinomycosis associated with the use of an intrauterine device. Because variable clinical pictures and infrequency of the disease make the diagnosis more difficult, increased alertness of clinicians and microbiologists to the presence of anaerobic organism as the cause of infection are needed to make an earlier and more correct diagnosis of actinomycoses and to further avoid any inappropriate treatment.
Abdomen ; Actinomycosis ; Adult ; Colon ; Diagnosis ; Female ; Humans ; Intrauterine Devices ; Pelvic Infection ; Pelvis ; Sulfur

OBJECTIVE: Aromatase is the key enzyme for the conversion of C19 steroids into estrogen in certain human tissues. We studied to evaluate the aromatase expression in eutopic endometirum and endometriotic lesion and its relationship to clinical and laboratory parameters. METHODS: The study included 78 cases of endometriotic lesion and 14 cases of eutopic endometrium and 30 cases of normal uterine endometrium obtained through laparoscopic surgery and curettage. The frozen tissue specimens were examined by immunohistochemistry using aromatase. Clinical symptoms, laboratory findings, and operative findings were analyzed and compared in according to aromatase expression. RESULTS: We observed positive immunohistochemical expression for aromatase in endometriotic lesion from 46/78 patients (59.0%). Aromatase expression was elevated in comparison to eutopic endometrium (5/14 patients, P=0.032) and the difference was more pronounced when eutopic endometriums from patients with endometriosis were compared with those of healthy controls (2/30 patients, P<0.001). Aromatase-positive patients had more moderate-to-severe chronic pelvic pain, higher CA-125 level significantly. Also in operative findings, severe grade endometriosis, bilateral endometriomas, and associated leiomyoma and adenomyosis were more frequent in aromatase positive patients. High values of white blood cell count, erythrocyte sedimentation rate, CA 19-9 were more frequent in aromatase positive patients notwithstanding insignificant differences. CONCLUSION: Unopposed local biosynthesis of estrogens by increased expression of aromatase in eutopic endometrium and endometrial tissue could be involved in the development or maintenance of endometriosis and other uterine estrogen-triggered diseases. Our findings suggest increased expression of aromatase may be related with severity, activity, and chronic pelvic pain in patients with endometriosis.
Adenomyosis ; Aromatase ; Blood Sedimentation ; Curettage ; Endometriosis ; Endometrium ; Estrogens ; Female ; Humans ; Immunohistochemistry ; Laparoscopy ; Leiomyoma ; Leukocyte Count ; Pelvic Pain ; Steroids ; Biomarkers, Tumor

PURPOSE: Infiltrating lobular carcinoma of the breast was known to have a high incidence of multicentricity and bilaterality in patients. We analyzed the clinical features of infiltrating lobular breast cancer. MATERIALS AND METHODS: We studied 29 patients with infiltrating lobular carcinoma of the breast, from Jan. 1980 to Mar. 1997 in the Department of Surgery, Seoul National University Hospital. RESULTS: The age of the patients ranged from 32 to 71 years with an average of 45.2 years. The main complaining symptom was a painless mass. The diameter of the tumor ranged from 0.7 to 7 cm with a mean size of 2.8 cm. The axillary lymph node was positive for malignancy in 12 cases. The number of multicentric breast cancers were 7 cases (24.1%), and the number of bilateral breast cancers were 3 cases (10.3%). The estrogen receptor was positive in 66.7%, and the progesterone receptor was positive in 75% of the cases. There were one local recurrence and three distant metastases during a mean follow-up period of 4.5 years. The 5-year survival rate and 5-year disease free survival rate were 89.6% and 88.6%, respectively. CONCLUSION: Infiltrating lobular breast cancers are at greater risk of developing multicentricity and bilaterality than nonlobular breast cancers. Careful program of frequent follow-up examinations and thorough histopathological studies are needed for patients with infiltrating lobular breast cancers.
Breast Neoplasms* ; Breast* ; Carcinoma, Lobular ; Disease-Free Survival ; Estrogens ; Follow-Up Studies ; Humans ; Incidence ; Lymph Nodes ; Neoplasm Metastasis ; Receptors, Progesterone ; Recurrence ; Seoul ; Survival Rate

No abstract available.
Breast Neoplasms* ; Breast* ; Humans* ; Receptor, erbB-2*

OBJECTIVE: To evaluate effects of subacromial bursa injection with steroid according to dosage and to investigate whether hyaluronidase can reduce steroid dosage. METHODS: Thirty patients with periarticular shoulder disorder were assigned to receive subacromial bursa injection once a week for two consecutive weeks. Ten patients (group A) underwent subacromial bursa injection with triamcinolone 20 mg; another group of ten patients (group B) with hyaluronidase 1,500 IU and triamcinolone 20 mg; and the other ten patients (group C) with triamcinolone 40 mg. We examined the active range of motion (AROM) of the shoulder joint, visual analogue scale (VAS), and shoulder disability questionnaire (SDQ) at study entry and every week until 1 week after the 2nd injection. RESULTS: All groups showed statistically significant improvements in VAS after 1st and 2nd injections. When comparing the degree of improvement in VAS, there were statistically significant differences between groups C and A or B, but not between groups A and B. SDQ was statistically significantly improved only in groups B and C, as compared to pre-injection. There were statistically significant differences in improvement of SDQ after the 2nd injection between groups C and A or B. Statistically significant improvements in AROM were shown in abduction (groups B and C) and in flexion (group C only). CONCLUSION: Repeated high-dose (40 mg) steroid injection was more effective in terms of pain relief and functional improvements of shoulder joint than medium-dose (20 mg) steroid injection in periarticular disorder. Hyaluronidase seems to have little additive effect on subacromial bursa injection for reducing the dosage of steroid.
Humans ; Hyaluronoglucosaminidase* ; Range of Motion, Articular ; Shoulder ; Shoulder Impingement Syndrome ; Shoulder Joint ; Triamcinolone ; Surveys and Questionnaires

We investigated the effect of beta-adrenergic stimulation on the heart rate and QT interval in syncope children with or without coexisting ventricular arrhythmias (VA). Of the 24 children who presented with syncope or presyncope and showed negative tilt test, 13 were classified into a group with VA and the remaining 11 without VA. The provocative test was performed in bolus infusion and continuous infusion. RR, QT, and QTc intervals on routine 12-lead surface electrocardiogram were obtained during each stage of isoproterenol infusion. In all cases, malignant ventricular arrhythmia and syncope were not induced by isoproterenol provocative test. RR and QT intervals were shortened and QTc intervals were prolonged as the isoproterenol dose was increased in both groups and methods. The QTc interval reached its peak level after the bolus injection of 1.0 microgram and during the continuous infusion of 0.03 microgram/kg/min. The two groups showed no significant difference in the QTc interval change according to the infusion methods. This study indicates that changes in the heart rate and QT interval by beta-adrenergic stimulation were not different according to the coexisting ventricular arrhythmias in syncope children with negative head-up tilt test.
Adolescent ; Adrenergic beta-Agonists/pharmacology* ; Arrhythmia/physiopathology* ; Child ; Child, Preschool ; Comorbidity ; Electrocardiography ; Female ; Heart Rate/drug effects* ; Heart Rate/physiology* ; Human ; Isoproterenol/pharmacology* ; Male ; Syncope/physiopathology*

BACKGROUND: The deleterious cardiopulmonary side effects immediately after positioning in reverse Trendelenburg and CO2 intra-abdominal insufflation during a laparoscopic cholecystectomy are well tolerated in healthy patients but can lead to serious morbidity and mortality in patients with a limited cardiopulmonary reserve. Using a continuous and non-invasive cardiac output monitor based on partial CO2 rebreathing method, we investigated the immediate cardiopulmonary changes caused by positioning in reverse Trendelenburg and CO2 intra-abdominal insufflation during a laparoscopic cholecystectomy, and assessed the applicability of the partial CO2 rebreathing method for the measurement of cardiac output in a laparoscopic cholecystectomy. METHODS: The investigation was carried out on 11 patients undergoing a laparoscopic cholesystectomy. The control values of cardiac index (CI), cardiac output (CO), mean arterial pressure (MAP), heart rate (HR), central venous pressure (CVP), systemic vascular resistance (SVR), dynamic compliance (Cdyn), airway resistance (Raw), peak inspiratory pressure (PIP) and end tidal CO2 partial pressure (PETCO2) were measured in the supine position after induction with target-controlled infusion of propofol (5 microgram/ ml). Five minutes after positioning in reverse Trendelenburg and CO2 insufflation, the same cardiopulmonay variables were measured and compared with the control values. RESULTS: CI, CO and CVP were reduced 33.3%, 31.9% and 29.0%, respectively (P < 0.05). MAP and SVR were increased 39.8% and 154.1%, respectively (P < 0.05). Cdyn was reduced 38.0% (P < 0.05). Raw and PIP were increased 22.8%, and 34.8%, respectively (P < 0.05), whereas HR and PETCO2 remained unchanged. CONCLUSIONS: The non-invasive cardiopulmonary monitor using partial CO2 rebreathing method, could be used with ease and safety in a laparoscopic cholecystectomy.
Airway Resistance ; Arterial Pressure ; Cardiac Output ; Central Venous Pressure ; Cholecystectomy, Laparoscopic ; Compliance ; Heart Rate ; Humans ; Insufflation ; Mortality ; Partial Pressure ; Propofol ; Respiratory System* ; Supine Position ; Vascular Resistance