2.Clinical Study of Ectopic Pregnancy.
Byung Wook JUNG ; Jong Dae KIM ; Eun Chul JANG ; Eun Sik SON ; Ho Joon CHOI ; Seung Gwon SHIN
Korean Journal of Obstetrics and Gynecology 2000;43(12):2159-2165
No abstract available.
Female
;
Pregnancy
;
Pregnancy, Ectopic*
3.A case of megacolon complicating pregnancy.
Gyung An HAN ; Min Jung SEO ; Jee Gwon PARK ; Sung Jae LEE ; Won Joon CHOI ; Soon Ae LEE ; Jong Hak LEE ; Won Young BAEK
Korean Journal of Obstetrics and Gynecology 2000;43(12):2319-2322
No abstract available.
Megacolon*
;
Pregnancy*
4.Effects of oral iron chelator deferasirox on human malignant lymphoma cells.
Jong Gwon CHOI ; Jung Lim KIM ; Joohee PARK ; Soonwook LEE ; Seh Jong PARK ; Jun Suk KIM ; Chul Won CHOI
Korean Journal of Hematology 2012;47(3):194-201
BACKGROUND: Iron is essential for cell proliferation and viability. It has been reported that iron depletion by a chelator inhibits proliferation of some cancer cells. Deferasirox is a new oral iron chelator, and a few reports have described its effects on lymphoma cells. The goal of this study was to determine the anticancer effects of deferasirox in malignant lymphoma cell lines. METHODS: Three human malignant lymphoma cell lines (NCI H28:N78, Ramos, and Jiyoye) were treated with deferasirox at final concentrations of 20, 50, or 100 microM. Cell proliferation was evaluated by an MTT assay, and cell cycle and apoptosis were analyzed by flow cytometry. Western blot analysis was performed to determine the relative activity of various apoptotic pathways. The role of caspase in deferasirox-induced apoptosis was investigated using a luminescent assay. RESULTS: The MTT assay showed that deferasirox had dose-dependent cytotoxic effects on all 3 cell lines. Cell cycle analysis showed that the sub-G1 portion increased in all 3 cell lines as the concentration of deferasirox increased. Early apoptosis was also confirmed in the treated cells by Annexin V and PI staining. Western blotting showed an increase in the cleavage of PARP, caspase 3/7, and caspase 9 in deferasirox-treated groups. CONCLUSION: We demonstrated that deferasirox, a new oral iron-chelating agent, induced early apoptosis in human malignant lymphoma cells, and this apoptotic effect is dependent on the caspase-3/caspase-9 pathway.
Annexin A5
;
Apoptosis
;
Benzoates
;
Blotting, Western
;
Caspase 9
;
Cell Cycle
;
Cell Line
;
Cell Proliferation
;
Flow Cytometry
;
Humans
;
Iron
;
Lymphoma
;
Triazoles
5.A Phase II Trial of Gemcitabine plus Capecitabine for Patients with Advanced Pancreatic Cancer.
Jong Gwon CHOI ; Jae Hong SEO ; Sang Cheul OH ; Chul Won CHOI ; Jun Suk KIM
Cancer Research and Treatment 2012;44(2):127-132
PURPOSE: The purpose of this study was to determine the efficacy and safety of treatment using gemcitabine and capecitabine for patients with advanced pancreatic cancer. MATERIALS AND METHODS: Patients with advanced unresectable pancreatic adenocarcinoma were enrolled in the study. Inclusion criteria included no prior systemic chemotherapy or radiation therapy, at least one radiographically documented and measurable tumor lesion, and adequate patient organ functions. The patients received 1,000 mg/m2 gemcitabine intravenously on days 1, 8 and 15, and 830 mg/m2 of oral capecitabine twice a day on days 1-21 of a 28-day cycle. RESULTS: Fifty patients with a median age of 53 years (range, 39 to 76 years) were enrolled in the study. The median follow-up was 10.0 months. The objective response rate of the 50 patients was 48.0% (95% CI, 22.5 to 57.1%). The median time to progression and overall survival were 6.5 months (95% CI, 2.3 to 8.7 months) and 10.0 months (95% CI, 5.7 to 16.7 months), respectively. Grade 3-4 toxicities associated with chemotherapy included neutropenia (22%), anemia (8%), thrombocytopenia (6%), and hand-foot syndrome (10%). CONCLUSION: Combination chemotherapy using gemcitabine and capecitabine was well tolerated and demonstrated promising efficacy in the treatment of advanced pancreatic cancer.
Adenocarcinoma
;
Anemia
;
Deoxycytidine
;
Drug Therapy, Combination
;
Fluorouracil
;
Follow-Up Studies
;
Hand-Foot Syndrome
;
Humans
;
Neutropenia
;
Pancreatic Neoplasms
;
Thrombocytopenia
;
Capecitabine
6.Induction of Humoral Immue Response in Mice by Wild and Mutant Type HBV Core DNA Vaccination.
Soo Jung YOON ; Young Sun LEE ; Taek Gyu GWON ; Joon Ho BAE ; Min Ae JANG ; Yoon Jung CHOI ; Young Ho KIM ; Min Ho SEO ; Sung Il SEO ; Won Gee BAEK ; Byung Gil CHOI ; Jong Wook PARK
Korean Journal of Immunology 2000;22(3):149-156
No abstract available.
Animals
;
DNA*
;
Mice*
;
Vaccination*
7.Bevacizumab Plus Erlotinib Combination Therapy for Advanced Hereditary Leiomyomatosis and Renal Cell Carcinoma-Associated Renal Cell Carcinoma: A Multicenter Retrospective Analysis in Korean Patients
Yeonjoo CHOI ; Bhumsuk KEAM ; Miso KIM ; Shinkyo YOON ; Dalyong KIM ; Jong Gwon CHOI ; Ja Young SEO ; Inkeun PARK ; Jae Lyun LEE
Cancer Research and Treatment 2019;51(4):1549-1556
PURPOSE: Hereditary leiomyomatosis and renal cell carcinoma (HLRCC) is a rare genetic syndrome resulting from germline mutations in fumarate hydratase. The combination of bevacizumab plus erlotinib showed promising interim results for HLRCC-associated RCC. Based on these results, we analyzed the outcome of bevacizumab plus erlotinib in Korean patients with HLRCC-associated RCC. MATERIALS AND METHODS: We retrospectively reviewed the efficacy and safety of bevacizumab plus erlotinib in patients with HLRCC-associated RCC who were confirmed to have germline mutations in fumarate hydratase. The primary endpoint was the objective response rate (ORR), while the secondary endpoints were progression-free survival (PFS) and overall survival (OS). RESULT: We identified 10 patients with advanced HLRCC-associated RCC who received bevacizumab plus erlotinib. Median age at diagnosis was 41 years, and five of the patients had received the combination as first- or second-line treatments. The ORR was 50% and the median PFS and OS were 13.3 and 14.1 months, respectively. Most adverse events were predictable and manageable by conventional measures, except for one instance where a patient died of gastrointestinal bleeding. CONCLUSION: This is the first real-world outcome of the treatment of advanced HLRCC-associated RCC. Bevacizumab plus erlotinib therapy showed promising activity with moderate toxicity. We should be increasingly aware of HLRCC-associated RCC and bevacizumab plus erlotinib should be a first-line treatment for this condition, unless other promising data are published.
Bevacizumab
;
Carcinoma, Renal Cell
;
Diagnosis
;
Disease-Free Survival
;
Erlotinib Hydrochloride
;
Fumarate Hydratase
;
Germ-Line Mutation
;
Hemorrhage
;
Humans
;
Leiomyomatosis
;
Retrospective Studies
8.Prognostic Significance of Peritumoral Vascular Invasion in Patients with Invasive Breast Cancer.
Jong Woo CHOI ; Yun Gwon HA ; Yoon Sik LEE ; Jin Hyun PARK ; Min Hee JEONG ; Hyun Ok LEE ; Hoon Gyu OH ; Jin Gu BONG
Journal of Korean Breast Cancer Society 2004;7(3):166-173
PURPOSE: Multiple clinical, biological, and pathologic factors correlate with the outcomes in patients with invasive breast cancer. The utility of a peritumoral vascular invasion (PVI) as an additional prognostic indicator has been poorly defined. The aim of this study was to determine if the presence or absence of PVI can be used to help assess the survival and recurrence. METHODS: An invasion of the vascular space (lymphatic and/or blood vessel) by a tumor, as assessed on routine hematoxylin and eosin sections, was investigated in a 146 women with primary operable invasive breast carcinoma. The presence of PVI was compared with the established prognostic factors such as age, tumor size, axillary lymph node involvement, histological grade, hormonal receptor status, and expression of c-erb B2, Ki-67 and p53. Survival analysis was performed using Kaplan-Meier method and log-rank test. RESULTS: PVI was found in 35.6% of cases and was significantly associated with an increasing tumor size (P=0.033) and metastatic axillary lymph nodes (P=0.012). The 5 year disease free survival (DFS) and overall survival (OS) were significantly lower in the patients with PVI than without PVI (P=0.0431 and 0.0445, respectively). In multivariate analysis, the axillary lymph node status (P=0.001), the tumor size (P=0.044) and PVI (P=0.050) were significant independent prognostic factors for the DFS. In the node- negative breast cancer group and in the node-positive breast cancer group, the 5 year DFS and OS were lower in the patients with PVI than in those without, but this did not show significant difference. CONCLUSION: Cox multivariate analysis showed that PVI is a strong prognostic factor for patients with operable invasive breast cancer and an independent prognostic factor for a recurrence. A histological assessment of PVI can provide prognostic information on primary operable invasive breast carcinoma and might be helpful in making a clinical decision.
Breast Neoplasms*
;
Breast*
;
Disease-Free Survival
;
Eosine Yellowish-(YS)
;
Female
;
Hematoxylin
;
Humans
;
Lymph Nodes
;
Multivariate Analysis
;
Prognosis
;
Recurrence
9.Duodenal Variceal Bleeding Treated with a Transjugular Intrahepatic Portosystemic Shunt.
Young Soo KIM ; Hyung Gil KIM ; Won CHOI ; Don Haeng LEE ; Pum Soo KIM ; In Han KIM ; Jae Nam CHANG ; Hyun Joo SHIN ; Jong Gil YOO ; Sung Gwon KANG
Korean Journal of Gastrointestinal Endoscopy 1999;19(2):281-286
Most cases of upper gastrointestinal bleeding in patients with portal hypertension are caused by esophagogastric varices. Less often, bleeding originates in varices located elsewhere. If ectopic varices are found, the same hemostatic technique tend to be used. However, there is no evidence that such techniques are useful in these cases. Duodenal varices are quite common, although they rarely bleed due to their location deep in the duodenal wall. Consequently, if emergency endoscopy is not conducted, hemorrhage may be wrongfully attributed to coexisting esophagogastric varices in a patient with portal hypertension without active bleeding. Hemorrhage from duodenal varices may be severe and life threatening. We report a patient with portal hypertension and bleeding duodenal varices caused by cirrhosis of the liver. Hemorrhage was subsequently controlled by placement of a transjugular intrahepatic portosystemic shunt. We recommend that in patients with life-threatening hemorrhage from duodenal varices caused by cirrhosis of the liver, transjugular intrahepatic portosystemic shunt (TIPS) be considered in the man-agement.
Emergencies
;
Endoscopy
;
Esophageal and Gastric Varices*
;
Fibrosis
;
Hemorrhage
;
Hemostatic Techniques
;
Humans
;
Hypertension, Portal
;
Liver
;
Portasystemic Shunt, Surgical*
;
Varicose Veins
10.A case of multiple myeloma recurred as skin involvement.
Hee Yun SEO ; Jong Gwon CHOI ; Hyeryoung SUL ; Seok Jin KIM ; Jae Hong SEO ; Byung Soo KIM ; Soo Young YOON
Korean Journal of Medicine 2006;70(6):711-714
Multiple myeloma is a plasma cell disorder that constitutes 10% of all haematopoietc neoplasias. Although it is a systemic disorder affecting various organs involving bones and kidneys, skin involvement is a rare finding which has never been reported in Korea. Recently, we experienced a case of multiple myeloma recurring as a single lesion of erythematous nodular rash and herein we report this case with brief review of literatures.
Exanthema
;
Kidney
;
Korea
;
Multiple Myeloma*
;
Plasma Cells
;
Skin Manifestations
;
Skin*