Byoung Kuk Jang

Prof. Byoung Kuk Jang

Department of Internal Medicine, Keimyung University, Daegu, Korea
orcid

Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
10 January 2014 in Hepatology
Verified
Journal Article
Open access
PDF file
YSYeon Seok Seo
Yeon Seok Seo
SPSoo Young Park
Soo Young Park
MKMoon Young Kim
Moon Young Kim
JKJu Hyun Kim
Ju Hyun Kim
JPJun Yong Park
Jun Yong Park
SUSoon Ho Um
Soon Ho Um
Vasoactive drugs are recommended to be started as soon as possible in suspected variceal bleeding, even before diagnostic endoscopy. However, it is still unclear whether the therapeutic efficacies of the various vasoactive drugs used are comparable. The aim of this prospective, multicenter, randomized, noninferiority trial was to characterize the effects of terlipressin, somatostatin, and octreotide when they are initiated before endoscopic treatment in patients with acute variceal bleeding. Patients with liver cirrhosis and significant upper gastrointestinal bleeding were randomly assigned to receive early administration of terlipressin, somatostatin, or octreotide, followed by endoscopic treatment. Patients with nonvariceal bleeding were excluded after endoscopy. The primary endpoint was 5-day treatment success, defined as control of bleeding without rescue treatment, rebleeding, or mortality, with a noninferiority margin of 0.1. In total, 780 patients with variceal bleeding were enrolled: 261 in the terlipressin group; 259 in the somatostatin group; and 260 in the octreotide group. At the time of initial endoscopy, active bleeding was noted in 43.7%, 44.4%, and 43.5% of these patients, respectively (P = 0.748), and treatment success was achieved by day 5 in 86.2%, 83.4%, and 83.8% (P = 0.636), with similar rates of control of bleeding without rescue treatment (89.7%, 87.6%, and 88.1%; P = 0.752), rebleeding (3.4%, 4.8%, and 4.4%; P = 0.739), or mortality (8.0%, 8.9%, and 8.8%; P = 0.929). The absolute values of the lower bound of confidence intervals for terlipressin versus somatostatin, terlilpressin versus octreotide, and octreotide versus somatostatin were 0.095, 0.090, and 0.065, respectively. Conclusion: Hemostatic effects and safety did not differ significantly between terlipressin, somatostatin, and octreotide as adjuvants to endoscopic treatment in patients with acute gastroesophageal variceal bleeding. (Hepatology 2014;60:954–963)

29 March 2011 in Endoscopy
Verified
Journal Article
Closed access
PDF file
EKE. Kim
E. Kim
KCK. Cho
K. Cho
KPK. Park
K. Park
KLK. Lee
K. Lee
Byoung Kuk JangByoung Kuk Jang
Byoung Kuk Jang
JHJ. Hwang
J. Hwang
Background and aim: Although perforation of the colon is known as one of the main complications of endoscopic submucosal dissection (ESD) for colorectal tumor management, factors predictive of perforation have not been fully evaluated. This study aimed to determine the factors associated with perforation during colorectal ESD. Methods: Patients with colorectal tumors undergoing ESD were enrolled and their records were reviewed retrospectively. Age, sex, co-morbidity, medication history, procedure time, resection method, tumor size, location, gross morphology, the presence of fibrosis, and histologic findings were included as possible risk factors. In the cases where perforation had occurred, factors associated with the duration of hospitalization were analyzed. Results: One hundred eight lesions in 108 patients were eligible for inclusion in the study (68 patients were male; mean patient age was 63.01 ± 10.71 years). Mean tumor size was 27.59 ± 10.10 mm (range: 8 – 53 mm). Laterally spreading tumor was the most common type (75 %), followed by the protruding type (25 %). Procedure time was 61.95 ± 41.90 minutes (range: 5 – 198 minutes). Complete en bloc resection was achieved for 85 lesions (78.7 %). Perforation occurred in 22 patients (20.4 %). Multivariate analysis confirmed that tumor size [odds ratio (OR): 1.084; 95 % confidence interval (CI): 1.015 – 1.158; P = 0.017] and the presence of fibrosis (OR: 4.551; 95 %CI: 1.092 – 18.960; P = 0.037) were independent risk factors for perforation. All cases of perforation were managed with nonsurgical treatment. Younger age and abdominal pain appeared to be related to prolonged hospitalization. Conclusion: Tumor size and fibrosis are important factors related to complications during colorectal ESD. Younger age and development of abdominal pain can predict the hospital course in patients with perforation after ESD.

28 October 2008 in Hepatology
Verified
Journal Article
Open access
PDF file
KPKeun-Gyu Park
Keun-Gyu Park
AMAe-Kyung Min
Ae-Kyung Min
EKEun Hee Koh
Eun Hee Koh
HKHyoun Sik Kim
Hyoun Sik Kim
MKMi-Ok Kim
Mi-Ok Kim
KLKi-Up Lee
Ki-Up Lee
Fatty liver is common in obese subjects with insulin resistance. Hepatic expression of sterol regulatory element binding protein-1c (SREBP-1c), which plays a major role in hepatic steatosis, is regulated by multiple factors, including insulin, adenosine monophosphate–activated protein kinase (AMPK), liver X receptors (LXRs), and specificity protein 1. Alpha-lipoic acid (ALA), a naturally occurring antioxidant, has been shown to decrease lipid accumulation in skeletal muscle by activating AMPK. Here we show that ALA decreases hepatic steatosis and SREBP-1c expression in rats on a high fat diet or given an LXR agonist. ALA increased AMPK phosphorylation in the liver and in cultured liver cells, and dominant-negative AMPK partially prevented ALA-induced suppression of insulin-stimulated SREBP-1c expression. ALA also inhibited DNA-binding activity and transcriptional activity of both specificity protein 1 and LXR. Conclusion: These results show that ALA prevents fatty liver disease through multiple mechanisms, and suggest that ALA can be used to prevent the development and progression of nonalcoholic fatty liver disease in patients with insulin resistance. (Hepatology 2008.)

1 January 2012 in The Korean Journal of Hepatology
Verified
Journal Article
Open access
PDF file
KSKi Tae Suk
Ki Tae Suk
SBSoon Koo Baik
Soon Koo Baik
JYJung-Hwan Yoon
Jung-Hwan Yoon
JCJae Youn Cheong
Jae Youn Cheong
YPYong Han Paik
Yong Han Paik
SJSe Jin Jang
Se Jin Jang
- Find evidence for LC by history taking and physical examination. (A1)

1 August 2015 in Gastrointestinal Endoscopy
Verified
Journal Article
Closed access
JCJae Hyuk Choi
Jae Hyuk Choi
EKEun Soo Kim
Eun Soo Kim
YLYoo Jin Lee
Yoo Jin Lee
KCKwang Bum Cho
Kwang Bum Cho
KPKyung Sik Park
Kyung Sik Park
SRSeung Wan Ryu
Seung Wan Ryu

1 March 2016 in Clinical and Molecular Hepatology
Verified
Journal Article
Open access
PDF file
JLJung Min Lee
Jung Min Lee
Byoung Kuk JangByoung Kuk Jang
Byoung Kuk Jang
YLYoo Jin Lee
Yoo Jin Lee
WCWang Yong Choi
Wang Yong Choi
SCSei Myong Choi
Sei Myong Choi
CLChang Hyeong Lee
Chang Hyeong Lee
Treating hepatocellular carcinoma (HCC) with portal vein tumor thrombosis (PVTT) remains controversial. We compared the outcomes of hepatic resection (HR), transarterial chemoembolization (TACE), and sorafenib therapy as treatments for HCC with PVTT. Patients diagnosed as HCC with PVTT between January 2000 and December 2011 who received treatment with sorafenib, HR, or TACE were included. Patients with main PVTT, superior mesenteric vein tumor thrombosis, or Child-Turcotte-Pugh (CTP) class C were excluded. The records of 172 patients were analyzed retrospectively. HR, TACE, and sorafenib treatment were performed is 40, 80, and 52 patients respectively. PVTT was classified as either involving the segmental branch (type I) or extending to involve the right or left portal vein (type II). The median survival time was significantly longer in the HR group (19.9 months) than in the TACE and sorafenib groups (6.6 and 6.2 months, respectively; both p<0.001), and did not differ significantly between the latter two groups (p=0.698). Among patients with CTP class A, type I PVTT or unilobar-involved HCC, the median survival time was longer in the HR group than in the TACE and sorafenib groups (p=0.006). In univariate analyses, the initial treatment method, tumor size, PVTT type, involved lobe, CTP class, and presence of cirrhosis or ascites were correlated with overall survival. The significant prognostic factors for overall survival in Cox proportional-hazards regression analysis were initial treatment method (HR vs. TACE: hazard ratio=1.750, p=0.036; HR vs. sorafenib: hazard ratio=2.262, p=0.006), involved lobe (hazard ratio=1.705, p=0.008), PVTT type (hazard ratio=1.617, p=0.013), and CTP class (hazard ratio=1.712, p=0.012). Compared with TACE or sorafenib, HR may prolong the survival of patients with HCC in cases of CTP class A, type I PVTT or unilobar-involved HCC.