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Featured researches published by U Im Chang.


Hepatology | 2006

A randomized controlled study of preemptive lamivudine in patients receiving transarterial chemo-lipiodolization.

Jeong Won Jang; Jong Young Choi; Si Hyun Bae; Seung Kew Yoon; U Im Chang; Chang Wook Kim; Se Hyun Cho; Jun Yeol Han; Young Sok Lee

Reactivation of hepatitis B virus (HBV) during chemotherapy is well documented. However, there are limited data on this complication in patients with hepatocellular carcinoma (HCC) undergoing transarterial chemotherapy. The aim of this study was to evaluate the efficacy of preemptive lamivudine therapy in reducing hepatitis due to HBV reactivation in patients with HCC undergoing transarterial chemo‐lipiodolization (TACL) and to seek predictors of this event. A total of 73 consecutive HCC patients undergoing TACL using epirubicin 50 mg/m2 and cisplatin 60 mg/m2 at monthly intervals were prospectively and randomly assigned to receive lamivudine 100 mg daily from the start of TACL (preemptive group) or not (control group). During the study, 11 (29.7%) of 37 patients in the control group and 1 (2.8%) of 36 patients in the preemptive group developed hepatitis due to HBV reactivation (P = .002). In addition, there were significantly more incidences of overall hepatitis (P = .021) and severe grade of hepatitis (P = .035) in the control group. With multivariate Cox regression model, a baseline HBV DNA level of more than 104 copies/mL was the only independent predictor of hepatitis due to HBV reactivation during chemo‐lipiodolization (P = .046). In conclusion, preemptive lamivudine therapy demonstrated excellent efficacy in reducing hepatitis due to HBV reactivation and hepatic morbidity during TACL. Preemptive therapy should be considered in HCC patients with an HBV DNA level of more than 104 copies/mL. Further studies are needed to confirm the value of this approach in patients with low‐level viremia. (HEPATOLOGY 2006;43:233–240.)


Journal of Hepatology | 2012

Comparative study between doxorubicin-eluting beads and conventional transarterial chemoembolization for treatment of hepatocellular carcinoma.

Myeong Jun Song; Ho Jong Chun; Do Seon Song; Hee Yeon Kim; Sun Hong Yoo; Chung-Hwa Park; Si Hyun Bae; Jong Young Choi; U Im Chang; Jin Mo Yang; Hae Giu Lee; Seung Kew Yoon

BACKGROUND & AIMS Transarterial chemoembolization (TACE) is a widely used treatment for hepatocellular carcinoma. In order to maximize its therapeutic efficacy, doxorubicin-loaded drug-eluting beads have been developed to deliver higher doses of the chemotherapeutic agent and to prolong contact time with the tumor. The purpose of this study was to evaluate the efficacy and safety of drug-eluting bead (DC bead®) TACE in comparison with conventional TACE (cTACE). METHODS A total of 129 patients who underwent TACE between August 2008 and February 2011 were enrolled. We compared HCC patients who underwent TACE with DC bead® (n=60) to controls who received cTACE (n=69). The primary end points were treatment response and treatment-related adverse events. The secondary end point was time to progression. RESULTS The treatment response in the DC bead® group was significantly higher than that of the cTACE group (p<0.001). The time to progression was significantly better in the DC bead® group than in the cTACE group (11.7 and 7.6months, respectively, p=0.018). Subgroup analysis showed that in intermediate-stage HCC, DC bead® treatment resulted in a significantly better treatment response and longer time to progression than cTACE (p<0.001 and 0.038, respectively). However, there was no statistically significant difference in liver toxicity between the DC bead® and cTACE group (p>0.05). CONCLUSIONS TACE with DC bead® showed better treatment response and delayed tumor progression compared with cTACE. There was no significant difference in hepatic treatment-related toxicities. DC bead® TACE thus appears to be a feasible and promising approach to the treatment of HCC.


Cancer | 2007

The impact of hepatitis B viral load on recurrence after complete necrosis in patients with hepatocellular carcinoma who receive transarterial chemolipiodolization: implications for viral suppression to reduce the risk of cancer recurrence.

Jeong Won Jang; Jong Young Choi; Si Hyun Bae; Seung Kew Yoon; Hyun Young Woo; U Im Chang; Chang Wook Kim; Soon Woo Nam; Se Hyun Cho; Jin Mo Yang; Chang Don Lee

Hepatocellular carcinoma (HCC) has a high tendency for recurrence after radical treatment. Apart from tumor and liver function parameters, little is known about the role of hepatitis B virus (HBV) factors in the recurrence of HCC. The objective of this study was to identify the potential relation between viral load and HCC recurrence in patients undergoing transarterial chemolipiodolization.


Liver International | 2005

Association between human leukocytes antigen alleles and chronic hepatitis C virus infection in the Korean population.

Seung Kew Yoon; Joon Yeol Han; Chul-Woo Pyo; Jin Mo Yang; Jeong Won Jang; Chang Wook Kim; U Im Chang; Si Hyun Bae; Jong Young Choi; Kyu Won Chung; Hee Sik Sun; Hee Baeg Choi; Tai-Gyu Kim

Abstract: Background/Aim: Recent data have shown that the clinical outcome of hepatitis C virus (HCV) infection may be influenced by the host genetic factor. The aim of this study was to investigate whether particular human leukocytes antigen (HLA) molecules are associated with the susceptibility to HCV infection in the Korean population.


Gut and Liver | 2011

Adult Living Donor Liver Transplantation Using Hepatitis B Core Antibody-Positive Grafts in Korea, a Hepatitis B-endemic Region

Hee Yeon Kim; Jong Young Choi; Chung-Hwa Park; Myeong Jun Song; Jeong Won Jang; U Im Chang; Si Hyun Bae; Seung Kew Yoon; Joon Yeol Han; Dong Goo Kim

Background/Aims The exclusion of hepatitis B core antibody (HBcAb)-positive donors from liver transplants (LTs) due to the risk of transmitting hepatitis B virus (HBV) does not appear to be practical in Korea, where hepatitis B is endemic. This study assessed the risk of de novo HBV infection in hepatitis B surface antigen (HBsAg)-negative LT recipients receiving a liver from HBcAb-positive donors. Methods Of 341 adult living donor LTs conducted at our institution between March 2001 and September 2008, 176 donors (51.6%) were HBcAb-positive, and 26 HBcAb-positive grafts were transplanted to HBsAg-negative recipients. The median follow-up time after LT was 41.9 months. Results Without anti-HBV prophylaxis, 2 out of 26 (7.7%) HBsAg-negative recipients who received grafts from HBcAb-positive donors developed de novo HBV infection 20 and 85 months after LT. These patients had been negative for all HBV serologic markers before transplantation. In both cases, there were no abnormalities in liver function tests upon diagnosis of de novo HBV infection. Conclusions De novo HBV infection from HBcAb-positive donors after LT does not appear to be of great concern in terms of the number of cases in Korea because high risk patients who are HBV-negative comprise only a small proportion of the recipients. However, HBV-naïve LT recipients still carry the risk of developing de novo HBV infection as in non-HBV endemic areas.


PLOS ONE | 2016

Heavy Alcohol Consumption with Alcoholic Liver Disease Accelerates Sarcopenia in Elderly Korean Males: The Korean National Health and Nutrition Examination Survey 2008-2010

Do Seon Song; U Im Chang; Sooa Choi; Yun Duk Jung; Kyungdo Han; Seung-Hyun Ko; Yu-Bae Ahn; Jin Mo Yang

Background and Aim Although a few studies have reported that sarcopenia is associated with alcoholic liver disease (ALD), no studies have investigated this association in a large sample representative of the elderly Korean population. Methods This was a cross-sectional study that used data from the Fourth and Fifth Korean National Health and Nutrition Examination Surveys (KNHANES) on subjects aged 65 years and older. Sarcopenia was defined as a skeletal muscle index (SMI) more than 1 SD below the gender-specific mean for young adults; SMI was calculated as the appendicular muscle mass divided by height squared (ASM/Ht2). Heavy alcohol consumption was defined as consuming at least 210 g/week, and elevated liver enzymes were defined as alanine aminotransferase levels of at least 32 U/L or aspartate aminotransferase levels of at least 34 U/L. ALD was defined as heavy alcohol consumption and elevated liver enzymes. Results The mean age of the 1,151 elderly males was 71.6 ± 0.2 years, and the prevalence of heavy alcohol consumption was 11.8% (136 subjects). SMI did not differ between the non-heavy and heavy alcohol consumer groups (7.1 ± 0.0 kg/m2 vs. 7.3 ± 0.1 kg/m2, respectively, P = 0.145). However, after stratifying by the presence of liver disease and heavy alcohol consumption and adjusting for other confounders in the multivariate logistic regression, SMI was significantly lower among heavy alcohol consumers with ALD (all P < 0.05). Additionally, two-way ANOVA showed a significant interaction between heavy alcohol consumption and liver disease (P = 0.011). Conclusion Sarcopenia was accelerated in the elderly male ALD group, with a significant interaction between alcohol consumption and liver disease.


Cancer Chemotherapy and Pharmacology | 2004

Therapeutic efficacy of multimodal combination therapy using transcatheter arterial infusion of epirubicin and cisplatin, systemic infusion of 5-fluorouracil, and additional percutaneous ethanol injection for unresectable hepatocellular carcinoma

Jeong Won Jang; Young Min Park; Si Hyun Bae; Jong Young Choi; Seung Kew Yoon; U Im Chang; Soon Woo Nam; Boo Sung Kim


Cancer Chemotherapy and Pharmacology | 2006

A combination therapy with transarterial chemo-lipiodolization and systemic chemo-infusion for large extensive hepatocellular carcinoma invading portal vein in comparison with conservative management

Jeong Won Jang; Si Hyun Bae; Jong Young Choi; Hyun Jong Oh; Min Soo Kim; So Yeon Lee; Chang Wook Kim; U Im Chang; Soon Woo Nam; Sang Bok Cha; Young Joon Lee; Ho Jong Chun; Byung Gil Choi; Jae Young Byun; Seung Kew Yoon


Infection and Chemotherapy | 2007

Clinical Features and Antimicrobial Resistance among Clinical Isolates of Women with Community-Acquired Acute Pyelonephritis in 2001-2006

Seong Heon Wie; U Im Chang; Hyung Wook Kim; Young Sic Kim; Soo Young Kim; Jian Hur; Sang Il Kim; Yang Ree Kim; Moon Won Kang


Infection and Chemotherapy | 2008

Clinical Features of 212 Cases of Scrub Typhus in Southern Region of Gyeonggi-Do and The Significance of Initial Simple Chest X-Ray

Seong Heon Wie; U Im Chang; Hyung Wook Kim; Jian Hur; Sang Il Kim; Yang Ree Kim; Moon Won Kang

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Jin Mo Yang

Catholic University of Korea

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Jong Young Choi

Catholic University of Korea

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Seung Kew Yoon

Catholic University of Korea

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Si Hyun Bae

Catholic University of Korea

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Jeong Won Jang

Catholic University of Korea

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Chang Wook Kim

Catholic University of Korea

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Kang Moon Lee

Catholic University of Korea

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Seong Heon Wie

Catholic University of Korea

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Woo Chul Chung

Catholic University of Korea

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Do Seon Song

Catholic University of Korea

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