2.A Study of Transcutaneous Oxygen Monitoring in Neonatal Intensive Care.
In Suck RYU ; Chul LEE ; Ran NAMKUNG ; Dong Gwan HAN
Journal of the Korean Pediatric Society 1988;31(11):1417-1424
No abstract available.
Infant, Newborn
;
Intensive Care, Neonatal*
;
Oxygen*
3.The Effect of Phototherapy on Serum bilirubin Binding Capacity and Affinity in the Neonate.
In Suck RYU ; Chul LEE ; Ran NAMKUNG ; Dong Gwan HAN
Journal of the Korean Pediatric Society 1990;33(10):1319-1325
No abstract available.
Bilirubin*
;
Humans
;
Infant, Newborn*
;
Phototherapy*
4.Electrophysiology of Hypothalamic Neuroendocrine Cells.
Pan Dong RYU ; Seong Kyu HAN ; Kyung Yoon KAM ; Wonee CHONG
Journal of Korean Society of Endocrinology 2000;15(6):672-683
No Abstract Available.
Electrophysiology*
;
Neuroendocrine Cells*
5.Circulating Tumor Cells and Extracellular Nucleic Acids in Breast Cancer.
Kosin Medical Journal 2012;27(1):1-9
Circulating tumor cells (CTCs) are defined as tumor cells circulating in the peripheral blood of patients, shed from either the primary tumor or from its metastases. The detection of circulating tumor cells (CTCs) in the peripheral blood of breast cancer patients may account for the different steps in the biologic progression of the disease. The detection of microscopic disease in patients with breast cancer is imperative to prognosis and can predict the efficacy of targeted treatments. In general, there are two main methods for their detection. These are based on cytometric and nucleic acid manipulation. Both methods generally require an enrichment step to increase sensitivity of the assay. This step is based on either detection of specific surface markers using immuno-selection and/or on morphological features, such as cell size or density. We review the methods of detecting CTCs, their prognostic implications, and opportunities to exploit the properties of CTCs to develop personalized therapy.
Breast
;
Breast Neoplasms
;
Cell Size
;
Humans
;
Neoplasm Metastasis
;
Neoplastic Cells, Circulating
;
Nucleic Acids
;
Prognosis
6.Impact of Serum HER2 Levels on Survival and Its Correlation with Clinicopathological Parameters in Women with Breast Cancer.
Journal of Breast Cancer 2012;15(1):71-78
PURPOSE: The aims of our study were to assess the correlation between serum HER2 and clinicopathologic factors, the effect of serum HER2 on survival rate, and the effect of changes in serum HER2 levels between pre- and post-adjuvant chemotherapy on survival rate. METHODS: The study subjects, 200 women with breast cancer, were a subset of patients operated on between January 2005 and December 2006. We evaluated changes in serum HER2 levels between pre- and post-adjuvant chemotherapy. RESULTS: Being estrogen receptor (ER) negative was also correlated with high serum HER2 (p=0.017). The number of patients with changes in serum HER2 (>20% increased level during the follow-up period) was correlated with advanced T-stage (p=0.010), advanced American Joint Committee on Cancer (AJCC) stage (p=0.015) and poor histologic grade (p=0.001). Univariate analysis for prognostic factors associated with disease-free survival (DFS) revealed that the difference in DFS between those with serum HER2 level <15 ng/mL and those with levels > or =15 ng/mL was statistically significant (p=0.0129) and the changes in serum HER2 levels were also statistically significant (p=0.001). Prognostic factors associated with overall survival revealed that the changes in serum HER2 levels between pre- and post-adjuvant chemotherapy were statistically significant (p=0.0012). CONCLUSION: Serum HER2 level is associated with a more advanced degree of axillary lymph node involvement and associated with ER negativity. And Changes in serum HER2 levels are associated with more advanced AJCC staging and histologic tumor grade. There are significant associations between serum HER2 level, changes in serum HER2 levels and 5-year DFS.
Breast
;
Breast Neoplasms
;
Disease-Free Survival
;
Estrogens
;
Female
;
Follow-Up Studies
;
Humans
;
Joints
;
Lymph Nodes
;
Prognosis
;
Survival Rate
7.Response to Paclitaxel in Node-positive Triple Negative Breast Cancer.
Journal of the Korean Surgical Society 2010;79(3):173-179
PURPOSE: Triple negative breast cancer (TNBC) has had poor prognosis compared with the luminal subtype. And there has been no benefit from doxorubicin. However, the addition of paclitaxel is known to improve both disease-free survival (DFS) and overall survival (OS). The aim of our study was to assess the effect of the addition of paclitaxel after adjuvant chemotherapy with doxorubicin plus cyclophosphamide in TNBC. METHODS: We randomly selected 87 women from 104 women with TNBC who had been randomly assigned to receive doxorubicin (60 mg per square meter of body-surface area) plus cyclophosphamide (600 mg per square meter) for four cycles, followed by four cycles of paclitaxel (175 mg per square meter) or two more cycles of doxorubicin plus cyclophosphamide. Due to predictions of clinical outcomes in women who receive adjuvant paclitaxel based chemotherapy, immunohistochemical analyses of these tissue specimens for CK5/6 were used. RESULTS: Among patients with TNBC, 24 patients (27.6%) were classified as CK5/6-positive triple negative type. Twelve patients were classified as paclitaxel chemotherapy group and 75 patients were classified as no paclitaxel group. No interaction was observed between DFS or OS and paclitaxel regimens. CK5/6 was, however, not associated with a significant benefit from paclitaxel in our study. CONCLUSION: In our study, the addition of paclitaxel after adjuvant treatment with doxorubicin (<60 mg per square meter) is not associated with DFS or OS in TNBC.
Breast
;
Breast Neoplasms
;
Chemotherapy, Adjuvant
;
Cyclophosphamide
;
Disease-Free Survival
;
Doxorubicin
;
Female
;
Humans
;
Paclitaxel
;
Phenobarbital
;
Prognosis
8.Outcome of Ductal Carcinoma in Situ in Patients with or Without p53 Mutations.
Kosin Medical Journal 2012;27(2):119-125
OBJECTIVES: p53 is a tumor suppressor gene and plays an important role in the etiology of breast cancer. The aim of this study is to clarify clinical significance of p53 in Ductal Carcinoma in situ (DCIS), and discuss about survival effect. METHODS: The study subjects, 69 women with breast cancer, were a subset of patients operated from Jan 2005 to Dec 2006. We used a cutoff of 10% to distinguish between positive and negative p53 staining. The University of Southern California (USC)/Van Nuys Prognostic Index (VNPI) were compared with 2 categories of p53. RESULTS: The positivity of p53 was found in 20 patients (29.0%) in DCIS. And negativity of p53 was found in 49 patients (71.0%). And 15 patients (21.7%) had a low USC/VNPI score, 42 patients (60.9%) intermediate and 12 patients (17.4%) a high score. The positivity of p53 was correlated with high USC/VNPI (P = 0.001). The univariate analysis for prognostic factors associated with Disease Free Survival (DFS) revealed that patients with p53 positivity show shorter Disease Free Survival (DFS) than patients with p53 negativity (P = 0.013) and USC/VNPI was also statistically significant (P = 0.030). CONCLUSIONS: According to our study, p53 was associated with high USC/VNPI. These findings suggest that p53 can be used to classify DCIS into at least two subtypes with differing prognoses.
Breast Neoplasms
;
California
;
Carcinoma, Ductal
;
Carcinoma, Intraductal, Noninfiltrating
;
Disease-Free Survival
;
Female
;
Genes, Tumor Suppressor
;
Humans
;
Prognosis
9.Comparison of survival outcomes between modified radical mastectomy and breast conserving surgery in early breast cancer patients.
Yoon Seok KIM ; Dong Won RYU ; Chung Han LEE
Kosin Medical Journal 2016;31(1):19-29
OBJECTIVES: Breast conserving surgery (BCS) for early breast cancer is now an accepted treatment, but there are controversies about its comparability with mastectomy. Thus, we investigated the survival outcomes who underwent BCS and modified radical mastectomy (MRM). METHODS: In this retrospective review, we analyzed the survival outcomes of 618 patients with early breast cancer who underwent two different surgery from January 2002 to December 2009. Postoperative pathologic difference, disease free survival period, overall survival period, recurrence pattern, recurrent rate and site were compared. In addition, preoperative patients data are also collected. RESULTS: Disease free survival period of MRM and BCS was 108.46 months and 80.82 months, respectively (P < 0.01). However, there was no significant correlation between overall survival period and operative methods (P = 0.67). In addition, recurrence pattern (P = 0.21), recurrent rate (P = 0.36) and site (P = 0.45, P = 0.09) were not associated with operative method. CONCLUSIONS: In this study, we can suggest that early breast cancer patients could improve their disease free survival if they underwent MRM. So, when we operate high risk breast cancer patients, MRM could be considered for their disease free life. Further studies may be required to establish appropriate strategy of surgery for early breast cancer.
Breast Neoplasms*
;
Breast*
;
Disease-Free Survival
;
Humans
;
Mastectomy
;
Mastectomy, Modified Radical*
;
Mastectomy, Segmental*
;
Methods
;
Recurrence
;
Retrospective Studies
10.Outcome of triple-negative breast cancer in patients with or without markers regulating cell cycle and cell death.
Journal of the Korean Surgical Society 2012;83(4):187-195
PURPOSE: The genes p53 and B-cell lymphoma (bcl)-2 play an important role in regulating the mechanisms of apoptosis. In this paper, we retrospectively applied these factors to our series of triple negative breast cancer (TNBC) patients, in conjunction with an evaluation of the prognostic significance of these factors' influence on TNBC survival rate. Particular focus was placed on the role of bcl-2, p53, Ki-67. METHODS: The study subjects, 94 women with TNBC, were a subset of patients operated at Kosin University Gospel Hospital from January 2000 to December 2005. Chi-squared tests were used for statistical analysis. RESULTS: Positive staining for cytokeratin (CK)5/6 in 23 cases (24.5%), epidermal growth factor receptor in 15 cases (16.0%), bcl-2 in 26 cases (27.7%), p53 in 55 cases (58.5%) and Ki-67 in 74 cases (78.7%) was determined. Lymph node status, tumor size and expression of CK5/6 or Ki-67 were independent prognostic factors for patients with TNBC. CONCLUSION: Markers regulating cell cycle and cell death such as p53 and bcl-2 cannot be used to classify TNBCs into two subtypes with differing disease-free survival. But because our study is small in size, more abundant patient data will be needed to evaluate the factors' predictive role in regulating cell cycle and cell death.
Apoptosis
;
Breast
;
Breast Neoplasms
;
Cell Cycle
;
Cell Death
;
Disease-Free Survival
;
Female
;
Humans
;
Keratins
;
Lymph Nodes
;
Lymphoma, B-Cell
;
Receptor, Epidermal Growth Factor
;
Retrospective Studies
;
Survival Rate