• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제17권1호
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• pp.41-46
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• 2014

Purpose: The spontaneous seroconversion rate of hepatitis B e antigen (HBeAg)-positive chronic hepatitis B (CHB) virus infection in children is lower than that in adults. However, few studies have investigated the rate of transition from the immune-tolerant to the early immune-clearance phase in children. Methods: From February 2000 to August 2011, we enrolled 133 children aged <18 years who had visited the Department of Pediatrics, Kyungpook National University Hospital. All subjects were in the immune-tolerant phase of HBeAg-positive CHB virus infection. The estimated transition rate into the early immune-clearance phase was calculated using the Kaplan-Meier method. Results: Among the 133 enrolled pediatric CHB virus infection patients in the HBeAg-positive immune-tolerant phase, only 21 children (15.8%) had converted to the early immune-clearance phase. The average age at entry into active hepatitis was $10.6{\pm}4.8$ years. The incidence of transition from the immune-tolerant to the early immune-clearance phase in these children was 1.7 episodes/100 patient-years. When analyzed by age, the estimated transition rate was 4.6%, 7.1%, and 28.0% for patients aged <6, 6-12, >12 years, respectively. Conclusion: In children with CHB virus infection, the estimated rate of entry into the early immune-clearance phase was 28.0% for patients aged 12-18 years, which was significantly higher than that observed for children aged <12 years (11.7%; p=0.001).

• Asian Pacific Journal of Cancer Prevention
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• 제14권8호
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• pp.4509-4513
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• 2013

Chronic hepatitis B virus (HBV) infection has long been the most common cause of hepatocellular carcinoma (HCC). However, some aspects of the pathogenesis of HBV infection and genesis of hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) are still inconclusive. An increasing number of published studies indicate that hepatitis B virus mutations are associated with risk of HCC. These variations include, in particular, mutations in ORF S,C,X gene regions. This mini-review summarizes results of clinical studies and molecular mechanisms on the possible relations of HBV mutations with the development of hepatocellular carcinoma.

• 한국보건간호학회지
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• 제31권2호
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• pp.257-271
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• 2017

Purpose: The hepatitis B virus is a major cause of chronic liver disease. The clinical guidelines recommend that inactive chronic hepatitis (ICH) patients also check their liver function every 6 to 12 months and manage the potential risks. This study compared the hepatitis B knowledge, self-care practice, and quality of life in patients with HBV according to the disease activity. Methods: This study was conducted in a university hospital and surveyed on 65 ICH patients and 68 progressive chronic liver disease (PCLD) patients from November in 2012 to September in 2013. Results: The knowledge of hepatitis B was lower in the group of a lately perceived HBV infection and ICH. Self-care practice was lower in the male and the patients group with a perceived HBV infection within 5 years. The "taking regular liver function test" score was lower in the ICH. Eight out of 12 Liver Disease Quality of Life instrument (LDQOL) subscales were lower in PCLD. Conclusion: The hepatitis B knowledge and self-care practice are relatively lacking in ICH and the patients group with a perceived HBV infection within 5 years. More effective education programs will be necessary to enhance the hepatitis B knowledge and self-care for patients with HBV and even for ICH.

• Journal of Yeungnam Medical Science
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• 제3권1호
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• pp.325-332
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• 1986

저자들은 16세 남자 환자에서 만성 지속성 간염 및 막증식성 사구체신염(type I)이 발생한 Hepatitis B virus associated nephropathy 1예(例)를 경험하였기에 보고하는 바이며, 특히 우리나라는 B형 간염 바이러스의 나환율(羅患率)이 높기 때문에 B형 간염과 연관된 신질환의 빈도도 높을 것으로 추정(推定)되며, 그 중요성도 클 것으로 사료(思料)된다. 따라서 향후(向後) Hepatitis B virus associated nephropathy의 발생 기전 및 치료법에 관한 체계적인 연구가 필요할 것으로 생각된다.

• The Korean Journal of Physiology and Pharmacology
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• 제17권5호
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• pp.375-383
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• 2013

Hepatocellular carcinoma (HCC) related to hepatitis B virus (HBV) and hepatitis C virus (HCV) infections is thought to account for more than 80% of primary liver cancers. Both HBV and HCV can establish chronic liver inflammatory infections, altering hepatocyte and liver physiology with potential liver disease progression and HCC development. Cyclophilin A (CypA) has been identified as an essential host factor for the HCV replication by physically interacting with the HCV non structural protein NS5A that in turn interacts with RNA-dependent RNA polymerase NS5B. CypA, a cytosolic binding protein of the immunosuppressive drug cyclosporine A, is overexpressed in many cancer types and often associated with malignant transformation. Therefore, CypA can be a good target for molecular cancer therapy. Because of antiviral activity, the CypA inhibitors have been tested for the treatment of chronic hepatitis C. Nonimmunosuppressive Cyp inhibitors such as NIM811, SCY-635, and Alisporivir have attracted more interests for appropriating CypA for antiviral chemotherapeutic target on HCV infection. This review describes CypA inhibitors as a potential HCC treatment tool that is contrived by their obstructing chronic HCV infection and summarizes roles of CypA in cancer development.

• 대한임상검사과학회지
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• 제45권1호
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• pp.9-15
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• 2013

Hepatitis B virus (HBV) infection has recently shown to be associated with diabetes mellitus. The objective of this study was to investigate the relationship between chronic hepatitis B and diabetes mellitus indicators. We evaluated anthropometry, metabolic syndrome risk factors, fasting glucose, HbA1c, and C-peptide among the normal and HBV subjects. The partial correlation and average comparison analysis were used to assess the independent association between chronic hepatitis B and diabetes mellitus indicators. Average comparisons of normal and HBV subjects were significantly different in fasting glucose (p<0.000), HbA1c (p<0.000), C-peptide (p<0.000), alanine transaminase (ALT) (p<0.000) and aspartate transaminase (AST) (p<0.000). We may suggest that HBV infection is related to diabetes mellitus indicators such as fasting glucose, HbA1c and C-peptide.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제5권1호
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• pp.39-50
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• 2002

Hepatitis B viral infection which affect about 10% of Korean population manifests asymptomatic carrier, chronic hepatitis and liver cirrhosis and even associates with hepatocellular carcinoma. Clinical manifestations induced by hepatitis B virus vary depending on the degree of immune response by cytotoxic T cells against viral epitope-presenting liver cells. Since hepatitis B virus presents high rate of mutaton that might change the presented epitope and eventually alter immune response, viral mutations, especially in promoters and enhancers, have an important implication in hepatic inflammation and viral replication. To identify mutations related to the hepatic inflammation, we investigated sequence variations of hepatitis B viral promotor regions in the presence or absence of symptoms in hepatitis B carriers. For this, sera from persistently hepatitis B virus-infected mother-child pairs were collected. After PCR amplifiation of all hepatitis B viral promoters (C promoter, S1 promoter, S2/S promoter, X promoter) using serum DNA from each pair, viral promotors were sequenced by automatic sequencer and then sequence data were analyzed by ClustalW. In most cases, the dominant type of maternal virus was transmitted to the child. However, in some children, some new host specific viral variants could be observed in Cp, S1p and S2/Sp. The mutations in C promoter did not seem to be vertically transmitted but arose in new host independently after the wild type had been transmitted. Enhancer I containing X promoter revealed high host specific variations as has been reported before. Two S promoters, S1p and S2/Sp, have shown some point mutations in children, but no deletion mutations were detected as in chronic hepatitis patients in whom deletion mutations are frequently found. In conclusion, the children with the vertically transmitted hepatitis B virus mostly retain the dominant type virus that had been transmitted. However, host specific variants tended to accumulate over time, possibly as clinical symptoms develop.

• 지역사회간호학회지
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• 제13권1호
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• pp.57-67
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• 2002

Purpose: Chronic hepatic disease is caused by inappropriate management of the hepatitis B virus. In Korea. there is an increasing number of chronic hepatic patients. who are at risk of dying from liver failure or hepatocellular carcinoma. Therefore it is important to manage the hepatitis B virus appropriately. Method: The patients diagnosed with chronic hepatic disease or HBV carrier who registered at a community health center or hospital were assessed regarding health man agement status and educational needs. The data was collected from 179 persons by convenient sampling between May, 2000 and April. 2001. The data were was analyzed for general characteristics using the descriptive method, factors influencing educational needs and health management using t-test and ANOVA. Results: 1. The average health management score was 18.2 from 12 to 24 range. Those who unknown were unaware of the presence of HBsAg, attending the educational program and keeping undergoing treatment at the community health center or hospital were had a higher management score(p< .05). 2. The educational needs regarding nutritional management(64.8%) was the highest topic with chronic hepatitis patients. The second highest topic was spreading prevention among family members (52.0%), and keeping medication (45.8%), the degree of physical activities(44.1%), and spreading prevention in public(39.1%). Those who were unaware of the presence of HBsAg (p< .001), less than 12 months after HBsAg (+)(p< .05), keeping treatment (p< .05) were higher educational needs. 3. The use of alternative therapy was 27.9% of subjects. The subjects thought it was helpful for disease management(42.1%), mostly, family members and relatives recommended to use (57.9%), and medical regimen was ignored during the alternative therapy. Conclusion: Based on the results, an educational program about prevention of type B hepatitis and management for patients having type B hepatitis should be developed.

• 대한간학회지
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• 제24권4호
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• pp.367-369
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• 2018

• Asian Pacific Journal of Cancer Prevention
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• 제13권11호
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• pp.5463-5467
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• 2012

Hepatitis B virus (HBV) infection is contagious with transmissiobn vertically or horizontally by blood products and body secretions. Over 50% of Iranian carriers contracted the infection prenatally, making this the most likely route of transmission of HBV in Iran. To evaluate the resistance to adefovir (ADV) therapy in patients with chronic hepatitis B infection, a study was conducted on 70 patients (63 males and 7 females), who had received in first line lamivudine and second line adefovir. All were tested for the presence of hepatitis B surface antigen (HBsAg), hepatitis B envelope antigen (HBeAg), serum alanine amino transferase (ALT) level and HBV DNA load before and after treatment with ADV. In all samples, resistance to lamivudine and ADV was tested with real time PCR. Among seventy patients with chronic hepatitis B infection, 18 (25.7%) were resistant to LAM and 8 (11.4%) were resistant to ADV. Only one patient was negative for the presence of HBS-Ag (5.6%) and two were negative for HBe-Ag (11.1%). In this study we used a new method (ALLGIO probe assay) that has high sensitivity in detection of adefovir resistance mutants, which we recommend to other researchers. Mutant strains of the YMDD motif of HBV polymerase can be found in some patients under treatment with lamivudine and ADV. ADV has been demonstrated to be efficient in patients with lamivudine resistant HBV.