The Effect of Levofloxacin on the Survival of Ovarian Cancer Cells with or Without Carboplatin Under Hypoxic Condition / 대한산부인과학회잡지

In solid tumor, there is a hypoxic region where oxygen supply is insufficient. In this study, we found that one of the quinolone antibiotics, levofloxacin, made a human ovarian cancer cells, SK-OV-3, resistant to hypoxia, even in the presence of a platinum-based anti-cancer therapeutic, carboplatin; when the cells (2 X 10(5) cells/12 well multi culture dish) were grown in no glucose medium (0 g/l) under hypoxia (1% O2), all the cells became dead after 24 hours of culture in the absence of levofloxacin and carboplatin, whereas the cells still survived, at least, until 36 hours of culture in the presence of levofloxacin (10-100 microgram/ml) alone or in combination with carboplatin. The results might have some implications in treating solid tumor; if cancer patients should be treated for infection with antibiotics, quinolone antibiotics can aggravate tumor by making cancer cells more resistant to hypoxia. This is also true even when a patient is treated with carboplatin. Therefore, the results strongly suggest that we should be careful in choosing antibiotics when they are used for cancer patients. In this regard, our work could be a new guideline in choosing antibiotics when antibiotics are applied for treating cancer patients.

The Relationship between the Expression of Cytokeratins, Ki-67, and the Infection of Human Papillomavirus 16, 18 Type in the Carcinogenic Progression of the Uterine Cervical Epithelium / 대한산부인과학회잡지

OBJECTIVE: To evaluate the relationship between the expression of cytokeratins, Ki-67 and the infection of human papillomavirus 16, 18 type in the carcinogenic progrssion of the uterine cervical epithelium. METHODS: Investigation the expression patterns of CKs and Ki-67 monoclonal antibody, and compared them with the incidence of HPV infection in 120 patients including 30 cases of normal cervical epithelium, 30 cases of LSIL, 30 cases of HSIL and 30 cases of SCC, to possible relationship between them. RESULTS: The expression of CK 14, and Ki-67 increased as the cervical lesions progressed from normal to SILs and SCC. In contrast, CK 13 is decreased as the cervical lesions progressed from normal to SILs and SCC. Statistical analysis revealed significant corelations between the CK 14 and spinal layer, between CK 13 and basal layer, between Ki-67 and all layers. HPV was detected in 16.7% of normal cervical tissue, 50.0% of LSIL, 70.0% of HSIL, 80.0% of SCC with PCR technique. The labelling indices of Ki-67 were significantly higher in HSIL than in normal cervical tissue and LSIL. The labelling indices were also higher in groups with positive reactions to CK 14, 13, and HPV than in groups with negative reactions to them. CONCLUSION: It was postulated that examination of patterns of immunoreactivity of CK 14, 13, and Ki- 67 could be a useful and convenient tool to explain the trasition from normal cervical epithelium to SCC via LSIL and HSIL and thereby predict the differentiation potential of the studies for lesions.

Malignant Struma Ovarii: two cases report and literature review / 대한산부인과학회잡지

Struma ovarii consists of thyroid tissue which is derived from germ cells in a mature teratoma. Five percent of struma ovarii are malignant, and of these only five percent metastasize. The rarity of this disease has resulted in difficulty in agreeing on treatment regimens and in limited imaging and monitoring difficulties encountered in their management. We have experienced two cases of malignant struma ovarii with brief review of the literature.

Hepatocellular Carcinoma Metastatic to the Ovary: one case report and review literature / 대한산부인과학회잡지

Metastatic hepatocellular carcinoma of the ovary is an extremely rare ovarian tumors and may cause a diagnostic problem. This tumor was first described by Ooartman and Elliot in 1983. The differential diagnosis in cases of hepatocellular carcinoma metastatic to the ovary is with primary and metastatic hepatoid tumors of the ovary and diverse other tumors of the ovary composed of oxyphil cells, which may be primary or metastatic. We have experienced one case of metastatic hepatocellular carcinoma of the ovary with brief review of the literature.