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Incheon, South Korea

Oh S.Y.,Dong - A University | Kim W.S.,Sungkyunkwan University | Kim J.S.,Sungkyunkwan University | Kim S.J.,Yonsei University | And 13 more authors.
Annals of Hematology | Year: 2010

Abstracts: Pulmonary marginal zone B-cell lymphoma of the MALT type (P-MZL) is a relatively rare form of lymphoma. We conducted a retrospective analysis of the clinical features and treatment outcomes of P-MZL for the evaluation of prognostic factors, and to collect information about the optimal treatment modality for this condition. From 1991 to 2008, a total of 61 patients with biopsy-confirmed P-MZL were retrospectively analyzed. The median age of our subjects was 60 (range, 34-79) years. Twenty-five of the patients (41%) were initially diagnosed without any symptoms. Video-assisted thoracic surgery was utilized for diagnosis in 19 patients (31%). Thirty-eight patients' conditions (62%) involved a single lobe. Lung lesions were bilateral in 15 patients (25%). Eleven patients evidenced synchronous involvement of extra-pulmonary site MZL. Overall, 56 of 61 patients were treated with surgery (n∈=∈22), chemotherapy (n∈=∈28), or radiotherapy (n∈=∈6). Among them, 46 patients achieved complete or partial remission. The median time to progression (TTP) was 5.6 (95% CI, 2.6-8.6) years. Five patients died during follow-up. Extra-pulmonary MZL and LN involvement were shown to be poor prognostic factors for TTP. We noted no differences between the operation group and chemotherapy group in terms of TTP. P-MZL tends to be an indolent disease-characterized by prolonged survival with frequent relapses. This is similar to what is observed with other cases of MALT-type site MZL. In order to conserve lung function and reduce the risks of operation, chemotherapy should be considered as a first-line option for the treatment of P-MZL. © 2009 Springer-Verlag. Source

Im J.-S.,Gachon Medical School | Choi S.H.,University of Ulsan | Hong D.,Gachon University | Seo H.J.,Gachon University | And 2 more authors.
Comprehensive Psychiatry | Year: 2011

This study was conducted to examine differences in proximal risk factors and suicide methods by sex and age in the national suicide mortality data in Korea. Data were collected from the National Police Agency and the National Statistical Office of Korea on suicide completers from 2004 to 2006. The 31 711 suicide case records were used to analyze suicide rates, methods, and proximal risk factors by sex and age. Suicide rate increased with age, especially in men. The most common proximal risk factor for suicide was medical illness in both sexes. The most common proximal risk factor for subjects younger than 30 years was found to be a conflict in relationships with family members, partner, or friends. Medical illness was found to increase in prevalence as a risk factor with age. Hanging/Suffocation was the most common suicide method used by both sexes. The use of drug/pesticide poisoning to suicide increased with age. A fall from height or hanging/suffocation was more popular in the younger age groups. Because proximal risk factors and suicide methods varied with sex and age, different suicide prevention measures are required after consideration of both of these parameters. © 2011 Elsevier Inc. All rights reserved. Source

Paick J.S.,Seoul National University | Park K.,Seoul National University | Kim S.W.,Seoul National University | Park J.W.,Seoul National University | And 3 more authors.
Actas Urologicas Espanolas | Year: 2012

Objective: We investigated hypoxia inducible factor-1α (HIF-1α), connective tissue growth factor (CTGF) expression and fibrosis in the testis of rats with surgically induced varicocele. Material and methods: A total of 47 adult male Sprague-Dawley rats were arranged in 3 groups, namely group 1 (varicocele operation 4 weeks ago, n = 10; sham operation 4 weeks ago, n = 5), group 2 (8 weeks, n = 11; n = 5), and group 3 (12 weeks, n = 11; n = 5). The rats in every group underwent bilateral orchiectomy 4, 8, and 12 weeks after the operations, respectively. HIF-1α and CTGF expression of both testes in group 3 were studied by real-time reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemistry. Fibrotic change was assessed by quantitative image analysis. Results: HIF-1α mRNA expression in testes tissues in varicocele operation and sham controls showed no significant differences in RT-PCR. However, CTGF mRNA expressions in left testes were found to be significantly different between varicocele operation and sham controls. HIF-1α staining was present in both testes of all specimens and CTGF staining was present in 10 left and 8 right testes of 11 specimens. However HIF-1α and CTGF staining were absent in control group. There were significant fibrotic changes of both testes in groups 2 and 3. There were significant differences in fibrotic change along the durations of surgical varicocele. Conclusions: This study reveals that experimental varicocele in the rat is associated with HIF-1α and CTGF expression and it is accompanied by fibrotic change in the testis. © 2011 AEU. Published by Elsevier España, S.L. All rights reserved. Source

Kang H.J.,Korea Institute of Radiological and Medical Sciences | Kim W.S.,Sungkyunkwan University | Kim S.J.,Sungkyunkwan University | Lee J.-J.,Chonnam National University | And 13 more authors.
Annals of Hematology | Year: 2012

We conducted a multicenter, phase II trial to investigate the efficacy and safety of rituximab plus CVP (R-CVP) combination therapy for patients with previously untreated stage III or IV marginal zone lymphoma (MZL). The treatment consisted of rituximab 375 mg/m 2, cyclophosphamide 750 mg/m 2 and vincristine 1.4 mg/m 2 (maximum 2.0 mg) being given intravenously on day 1 and oral prednisolone 100 mg on days 1-5. The treatment was repeated every 3 weeks and this was continued for six or eight cycles. Forty-two patients were enrolled from 13 institutes in Korea. Among them, two patients were dropped after the first and second cycles of chemotherapy, respectively, without evaluation. The 40 patients received a total of 287 cycles of R-CVP chemotherapy. The overall response rate was 88% (95% CI, 77-98%) with 24 complete responses (60%). The median duration of response was 28.3 months. After a median follow-up of 38.2 months, the estimated 3-year progression-free survival and overall survival were 59% and 95%, respectively. There were 30/287 cycles (11%) and 5/287 cycles (2%) of grade 3 or 4 neutropenia and febrile neutropenia, respectively. The R-CVP regimen can be an effective and tolerable first-line immunochemotherapy regimen for advanced stage MZL. © Springer-Verlag 2011. Source

Park B.C.B.,Pennsylvania State University | Im J.S.,Gachon Medical School | Ratcliff K.S.,University of Connecticut
Crisis | Year: 2014

Background: South Korean society faces a serious challenge in the increasing rates of youth suicidal behavior. There is a need both to gain a better understanding of the causes of this behavior and to develop strategies for responding to this critical public health issue. Aims: This article analyzes how psychological, sociopsychological, and subcultural factors influence suicidal proneness among Korean youth as well as makes suggestions for developing social policies that could reduce Korean youth suicidal behaviors. Method: Correlation and multivariate regression analyses on suicide proneness and depression were employed using a sample of 172 South Korean youths (aged 18-24) selected from the 2009 General Social Survey collected through face-to-face interviews. Results: Young people's suicidal proneness is associated with depression, a tolerant attitude toward suicide, strained family relations, living in rural areas, being female, and being closely related to survivors of suicide or potential suicides. Conclusion: The findings from this study reveal the signifi cance of social and cultural factors as influences on recent youth suicidal behavior in Korea. The analysis suggests that the underlying risk factors of suicidal behavior are embedded in the changing social and cultural context of Korean society. Thus, suicide prevention efforts should involve more than merely treating any underlying psychiatric disorders.© 2013 Hogrefe Publishing. Source

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