1.Activated stellate cells express the TRAIL receptor-2/death receptor-5 and undergo TRAIL-mediated apoptosis.
Geum Youn GWAK ; Jung Hwan YOON
The Korean Journal of Hepatology 2003;9(2):145-146
No abstract available.
Adult
;
*Fatty Liver/diagnosis/etiology/pathology
;
Humans
;
Male
2.Treatment of Hepatitis C in Special Conditions: Liver Cirrhosis.
Korean Journal of Medicine 2015;88(6):643-646
Acquiring a sustained virological response (SVR) in patients with cirrhosis or advanced hepatic fibrosis reduces liver disease-related mortality and the incidence of hepatocellular carcinoma. However, the SVR rate of the current standard of care, which is combination therapy with peg-interferon-alpha and ribavirin, is significantly lower, and treatment-related complications occur more frequently in patients with cirrhosis. Thus, antiviral treatment should be individualized in this population. This review highlights the issues associated with anti-hepatitis C virus treatment in patients with compensated and decompensated cirrhosis.
Carcinoma, Hepatocellular
;
Fibrosis
;
Hepatitis C*
;
Humans
;
Incidence
;
Liver
;
Liver Cirrhosis*
;
Mortality
;
Ribavirin
;
Standard of Care
3.Renewed 2015 Clinical Practice Guidelines for Management of Hepatitis C by Korean Association for the Study of the Liver; What Has Been Changed? - Treatment of Patients with Decompensated Cirrhosis.
The Korean Journal of Gastroenterology 2016;67(3):137-141
HCV-related decompensated liver cirrhosis is a life-threatening illness with an average 5-year survival rate of 50%. Because these patients have higher risk of morbidity and mortality including development of hepatocellular carcinoma, the benefits of eradicating the virus may be greater than in those with less-advanced disease. Recently, direct-acting antiviral agents (DAAs) are replacing interferon-based regimens that have serious adverse events and low tolerability in the treatment of HCV infection. Many clinical trials using combination of several DAAs with or without ribavirin are now actively on-going in HCV-related decompensated cirrhosis, and encouraging data are beginning to appear. In this review, recent advances in the treatment of HCV-related decompensated cirrhosis are introduced with special focus on new DAAs.
Antiviral Agents/*therapeutic use
;
Drug Therapy, Combination
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Hepatitis C/complications/*drug therapy/pathology
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Humans
;
Interferon-alpha/therapeutic use
;
Liver Cirrhosis/*complications/pathology
;
Practice Guidelines as Topic
;
Republic of Korea
;
Ribavirin/therapeutic use
4.Chronic Hepatitis B in Pregnancy.
Korean Journal of Medicine 2012;83(1):50-55
Hepatitis B virus (HBV) infection during pregnancy brings up unique management challenges. Varying aspects of care must be considered, including the effects of pregnancy on the course of HBV infection, effects of HBV infection on maternal and fetal health, treatment of HBV during and after pregnancy, and prevention of perinatal infection. For those with chronic HBV infection, the course of disease is usually unchanged during pregnancy. However, flares have been reported shortly after delivery. Women with high HBV DNA titer have an increased likelihood of perinatal transmission and may contribute to the failure of current passive-active immunoprophylaxis at birth. The aim of the present review is to provide a tool that may help physicians to manage correctly HBV infection in pregnancy.
Breast Feeding
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Cesarean Section
;
DNA
;
Female
;
Hepatitis B virus
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Hepatitis B, Chronic
;
Hepatitis, Chronic
;
Humans
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Parturition
;
Pregnancy
5.Diagnosis of Non-alcoholic Fatty Liver Disease.
Journal of Korean Diabetes 2014;15(2):82-92
Although the classical gold standard for diagnosing and staging non-alcoholic fatty liver disease (NAFLD) and assessing fibrosis is liver biopsy, the procedure has several drawbacks, such as sample error, subjectivity in interpretation, high cost, and a small but real risk of complications.In an attempt to replace liver biopsy and to subcategorize patients with NAFLD into different prognoses, many non-invasive methods using various biomarkers, scoring systems, and imaging methods, such as elastography, have been attempted in the last decade. This article summarizes non-invasive diagnostic tests for the diagnosis of NAFLD/Nonalcoholic steatohepatitis, as well as the limitations and merits of liver biopsy.
Biomarkers
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Biopsy
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Diagnosis*
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Diagnostic Tests, Routine
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Elasticity Imaging Techniques
;
Fatty Liver*
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Fibrosis
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Humans
;
Liver
;
Prognosis
6.Role of Radiofrequency Ablation in Patients with Hepatocellular Carcinoma Who Undergo Prior Transarterial Chemoembolization: Long-Term Outcomes and Predictive Factors.
Won SOHN ; Moon Seok CHOI ; Ju Yeon CHO ; Geum Youn GWAK ; Yong Han PAIK ; Joon Hyeok LEE ; Kwang Cheol KOH ; Seung Woon PAIK ; Byung Chul YOO
Gut and Liver 2014;8(5):543-551
BACKGROUND/AIMS: The role of radiofrequency ablation (RFA) remains uncertain in patients with viable hepatocellular carcinoma (HCC) after transarterial chemoembolization (TACE). METHODS: A total of 101 patients (April 2007 to August 2010) underwent RFA for residual or recurrent HCC after TACE. We analyzed their long-term outcomes and predictive factors. RESULTS: The overall survival rates after RFA were 93.1%, 65.4%, and 61.0% at 1, 3, and 5 years, respectively. Predictive factors for favorable overall survival were Child-Pugh class A (hazard ratio [HR], 3.45; p=0.001), serum alpha-fetoprotein (AFP) level <20 ng/mL (HR, 2.90; p=0.02), and recurrent tumors after the last TACE (HR, 3.14; p=0.007). The cumulative recurrence-free survival rate after RFA at 6 months was 50.1%. Predictive factors for early recurrence (within 6 months) were serum AFP level > or =20 ng/mL (HR, 3.02; p<0.001), tumor size > or =30 mm at RFA (HR, 2.90; p=0.005), and nonresponse to the last TACE (HR, 2.13; p=0.013). CONCLUSIONS: Patients with recurrent or residual HCC who undergo prior TACE show a favorable overall survival, although their tumors seem to recur early and frequently. While good liver function, a low serum AFP level, and recurrent tumors were independent predictive factors for a favorable overall survival, poor response to TACE, a high serum AFP level, and large tumors are associated with early recurrence.
Aged
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Carcinoma, Hepatocellular/*mortality/*therapy
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*Catheter Ablation
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Chemoembolization, Therapeutic/mortality
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Combined Modality Therapy/mortality
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Female
;
Humans
;
Liver Neoplasms/*mortality/*therapy
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Male
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Middle Aged
;
Neoplasm Recurrence, Local/mortality
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Survival Rate
;
Treatment Outcome
;
alpha-Fetoproteins/analysis
7.Comparison of usefulness of clinical diagnostic criteria for hepatocellular carcinoma in a hepatitis B endemic area.
So Young BAE ; Moon Seok CHOI ; Geum Youn GWAK ; Yong Han PAIK ; Joon Hyoek LEE ; Kwang Cheol KOH ; Seung Woon PAIK ; Byung Chul YOO
Clinical and Molecular Hepatology 2012;18(2):185-194
BACKGROUND/AIMS: We compared the accuracy and usefulness of clinical diagnostic criteria for hepatocellular carcinoma in a hepatitis B virus (HBV)-endemic area. METHODS: We reviewed the medical records of 355 patients who had undergone liver resection or biopsy at our institution between January 2008 and December 2009. These patients were reevaluated using four noninvasive diagnostic criteria for hepatocellular carcinoma proposed by the European Association for the Study of the Liver (EASL), the American Association for the Study of Liver Diseases (AASLD), the Korean Liver Cancer Study Group and the National Cancer Center (KLCSG/NCC), and National Comprehensive Cancer Network (NCCN) guidelines. RESULTS: The overall sensitivity was highest using the KLCSG/NCC criteria (79.8%), followed by the AASLD (51.5%), EASL (38.4%), and NCCN (10.1%; P<0.001) criteria, whereas the specificity (84.5-98.3%) and positive predictive value (96.2-98.3%) were similar for all of the criteria. The KLCSG/NCC criteria had an acceptable false-positive rate and the highest sensitivity among all of the patients, including those positive for HBsAg, those without liver cancer, and those with a tumor of at least 2 cm. CONCLUSIONS: The KLCSG/NCC and AASLD criteria exhibited the highest sensitivity, and all four guidelines had a high specificity among all of the patients. Based on the sensitivity and false-positive rate, the KLCSG/NCC criteria was the most useful in the majority of patients. Inclusion of HBV infection in the clinical diagnostic criteria for hepatocellular carcinoma would be reasonable and may lead to an improvement in the sensitivity, with acceptable false-positive rates, in HBV-endemic areas.
Adolescent
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Adult
;
Aged
;
Aged, 80 and over
;
Carcinoma, Hepatocellular/*diagnosis/etiology/pathology
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Female
;
Hepatitis B/complications/*diagnosis/epidemiology
;
Hepatitis B Surface Antigens/blood
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Hepatitis C/diagnosis/epidemiology
;
Humans
;
Liver/pathology
;
Liver Neoplasms/*diagnosis/etiology/pathology
;
Magnetic Resonance Imaging
;
Male
;
Middle Aged
;
Practice Guidelines as Topic
;
Predictive Value of Tests
;
Retrospective Studies
;
Risk Factors
;
Tomography, X-Ray Computed
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Young Adult
;
alpha-Fetoproteins/analysis
8.Pegylated Interferon and Ribavirin in the Retreatment of Chronic Hepatitis C in Korea.
Hyun Chin CHO ; Geum Youn GWAK ; Yong Han PAIK ; Moon Seok CHOI ; Joon Hyeok LEE ; Kwang Cheol KOH ; Byung Chul YOO ; Seung Woon PAIK
Gut and Liver 2013;7(5):585-593
BACKGROUND/AIMS: Pegylated interferon (peginterferon) and ribavirin is the current standard therapy for chronic hepatitis C. The aims of this study were to evaluate the efficacy of peginterferon and ribavirin and to identify predictors of a sustained virological response (SVR) to the retreatment of chronic hepatitis C in Korea. METHODS: The clinical records of 91 patients with chronic hepatitis C who were retreated with peginterferon and ribavirin were retrospectively analyzed. None of the patients had previously attained a SVR, and the patients were categorized according to their previous responses (nonresponder, relapser, or inadequate treatment) to conventional interferon/ribavirin. RESULTS: The overall SVR rate was 54.9%. Independent predictors of a SVR were genotypes 2 and 3, relapse, an adherence to peginterferon of over 80%, and an early virological response (EVR). For genotype 1 patients, an adherence to peginterferon of over 80% was an independent predictor of a SVR. CONCLUSIONS: Peginterferon and ribavirin therapy is effective for the retreatment of Korean chronic hepatitis C patients who have failed interferon/ribavirin, especially in patients with genotypes 2 and 3, relapse, an adherence to peginterferon over 80%, and an EVR. For genotype 1 patients, retreatment was effective in patients with an adherence to peginterferon over 80%.
Genotype
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Hepatitis C, Chronic
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Hepatitis, Chronic
;
Humans
;
Interferons
;
Korea
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Recurrence
;
Retreatment
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Retrospective Studies
;
Ribavirin
9.The comparison of esophageal variceal ligation plus propranolol versus propranolol alone for the primary prophylaxis of esophageal variceal bleeding.
Dongmo JE ; Yong Han PAIK ; Geum Youn GWAK ; Moon Seok CHOI ; Joon Hyeok LEE ; Kwang Cheol KOH ; Seung Woon PAIK ; Byung Chul YOO
Clinical and Molecular Hepatology 2014;20(3):283-290
BACKGROUND/AIMS: To investigate the efficacy and longterm outcome of esophageal variceal ligation (EVL) plus propranolol in comparison with propranolol alone for the primary prophylaxis of esophageal variceal bleeding. METHODS: A total of 504 patients were retrospectively enrolled in this study. 330 patients were in propranolol group (Gr1) and 174 patients were in EVL plus propranolol group (Gr2). The endpoints of this study were esophageal variceal bleeding and mortality. Association analyses were performed to evaluate bleeding and mortality between Gr1 and Gr2. RESULTS: EVL was more applied in patients with high risk, such as large-sized varices (F2 or F3) or positive red color signs. Total 38 patients had bleeds, 32 in Gr1 and 6 in Gr2. The cumulative probability of bleeding at 120 months was 13% in Gr1 versus 4% in Gr2 (P=0.04). The predictive factors of variceal bleeding were red color signs (OR 2.962, P=0.007) and the method of propranolol plus EVL (OR 0.160, P=0.000). 20 patients died in Gr1 and 12 in Gr2. Mortality rates are similar in the two groups compared, 6.7% in Gr1 and 6.9% in Gr2. The cumulative probability of mortality at 120 months was not significantly different in the two groups (7% in Gr1, 12% in Gr2, P=0.798). The prognostic factors for mortality were age over 50 (OR 5.496, P=0.002), Child-Pugh class B (OR 3.979, P=0.001), and Child-Pugh class C (OR 10.861, P=0.000). CONCLUSIONS: EVL plus propranolol is more effective than propranolol alone in the prevention of the first variceal bleeding in patients with liver cirrhosis.
Adrenergic beta-Antagonists/*therapeutic use
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Adult
;
Aged
;
Esophageal and Gastric Varices/*pathology
;
Female
;
Follow-Up Studies
;
Gastrointestinal Hemorrhage/*drug therapy/mortality/surgery
;
Humans
;
Ligation
;
Liver Cirrhosis/etiology
;
Logistic Models
;
Male
;
Middle Aged
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Odds Ratio
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Proportional Hazards Models
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Propranolol/*therapeutic use
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Retrospective Studies
;
Severity of Illness Index
;
Survival Rate
10.The effect of low dose corticosteroid therapy on viral reactivation in patients with chronic hepatitis B virus infection.
Hyang Ie LEE ; Geum Youn GWAK ; Moon Kyung PARK ; Hyun Joo SUH ; Joon Hyeok LEE ; Kwang Cheol KOH ; Seung Woon PAIK ; Byung Chul YOO
Korean Journal of Medicine 2008;74(6):619-623
BACKGROUND/AIMS: We investigated the effect of low dose corticosteroid therapy on HBV reactivation in patients with chronic HBV infection. METHODS: From August 1998 to March 2007, the HBsAg-positive patients who received oral or intravenous corticosteroid therapy for more than 1 week at Samsung Medical Center were included in this retrospective study. We included those patients who received anticancer chemotherapy or organ transplantation, or concurrent antiviral therapy or other immunosuppressive agents. HBV reactivation was defined as a 10-fold increase in the HBV DNA levels compared with baseline. RESULTS: A total of 16 patients were included. They were 45.4+/-16.7 years of age, and the male:female ratio was 14:2. Their combined diseases included bronchial asthma, allergic urticaria, allergic rhinitis, etc. The corticosteroid doses were converted to prednisolone equivalent doses and these varied from 2.5 mg to 50 mg per day. Eleven patients used less than 20 mg of prednisolone per day. The mean medication duration was 60.1 days (range: 7-364 days). Among the patients, only one patient showed HBV reactivation. This ankylosing spondylitis patient was a 31-year old man who took prednisolone 5 mg/day for 364 days. He displayed HBeAg-positivity before corticosteroid treatment. There was no aggravation of the levels of ALT, albumin, bilirubin, and PT between the pre-and post-medication in this patient. CONCLUSIONS: The short term use of low dose corticosteroid is not likely to be related with HBV reactivation in those patients with chronic HBV infection, yet long term use may lead to viral reactivation. Further large scaled, prospective studies on this subject are needed.
Asthma
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Bilirubin
;
DNA
;
Hepatitis B e Antigens
;
Hepatitis B, Chronic
;
Hepatitis, Chronic
;
Humans
;
Immunosuppressive Agents
;
Organ Transplantation
;
Prednisolone
;
Retrospective Studies
;
Rhinitis
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Rhinitis, Allergic, Perennial
;
Spondylitis, Ankylosing
;
Transplants
;
Urticaria