• Asian Pacific Journal of Cancer Prevention
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• 제13권6호
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• pp.2985-2990
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• 2012

Background: Hepatocellular carcinoma (HCC), the main malignant tumor of the liver, is very common and highly lethal. The aim of this study was to determine its clinicopathologic characteristics and risk factors in Turkey. Materials and methods: In this study, patients who were diagnosed as suffering from HCC in the period between August 2004 and December 2011 were evaluated retrospectively. Results: A total of 98 patients were included, with a median age 61 (range: 16 to 82). Seventy nine (80.6%) were male 59 (60.2%) were infected with hepatitis B virus (HBV) and 15 (15.3%) with HCV, another 15 (15.3%) being alcohol abusers. Seventy two (73.5%) were at advanced stage and 54 (55.1%) had elevated serum alpha-fetoprotein (AFP). Surgery, chemoembolization, systemic chemotherapy and application of the tyrosine kinase inhibitor sorafenib were the major treatment options. Conclusions: According to our findings HCC is mostly diagnosed in advanced stage and age, being five times more common in males than females. Main risk factors of HCC are HBV infection, HCV infection and alcohol abuse. Elevation in AFP may facilitate early diagnosis of HCC in high risk groups.

• Asian Pacific Journal of Cancer Prevention
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• 제14권9호
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• pp.4953-4960
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• 2013

Primary liver cancer is one of the most common cancers at the global level, accounting for half of all cancers in some undeveloped countries. This disease tends to occur in livers damaged through alcohol abuse, or chronic infection with hepatitis B and C, on a background of cirrhosis. Various cancer-causing substances are associated with primary liver cancer, including certain pesticides and such chemicals as vinyl chloride and arsenic. The strong association between HBV infection and liver cancer is well documented in epidemiological studies. It is generally acknowledged that the virus is involved through long term chronic infection, frequently associated with cirrhosis, suggesting a nonspecific mechanism triggered by the immune response. Chronic inflammation of liver, continuous cell death, abnormal cell growth, would increase the occurrence rate of genetic alterations and risk of disease. However, the statistics indicated that only about one fifth of HBV carries would develop HCC in lifetime, suggesting that individual variation in genome would also influence the susceptibility of HCC. The goal of this review is to highlight present level of knowledge on the role of viral infection and genetic variation in the development of liver cancer.

• Asian Pacific Journal of Cancer Prevention
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• 제15권10호
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• pp.4367-4372
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• 2014

We here document discovery of expression profile of myeloid derived suppressor cells (MDSCs) in chronic hepatitis B (CHB) patients and changes in the course of disease. The study population was composed of 75 outpatient HBV cases and 15 healthy control cases. Peripheral blood samples were collected for separation of mononuclear cells. Levels of MDSCs labeled with Lin-DR-CD11b+CD33+ obtained from peripheral blood mononuclear cells (PBMC), were revealed to have significant differences between the CHB and other groups. They were 0.414% for health control cases and 0.226% for CHB cases (Z=-2.356, p=0.0189). It also observed that the group of HBeAg positive cases had significant difference in MDSCs/PBMC median ($X^2=11.877$, p=0.003), compared with group of HBeAg negative cases and the healthy control group. It suggested considerable MDSCs might be involved in HBeAg immune tolerance. In addition, negative correlations between MDSCs/PBMC and parameters of ALT, AST and TBil, while positive correlation between MDSCs/PBMC and ALB parameter were found. Multiple comparisons between the four phases and health control phase again, there was a statistically sifnificant difference ($X^2=17.198$, p=0.002). Taken together, these findings may provide a new immunotherapy strategy for reduced the expression levels of MDSCs in CHB patients, through induction of an autoimmune response to virus removal.

• Pediatric Infection and Vaccine
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• 제5권2호
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• pp.245-257
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• 1998

목 적 : 1983년부터 B형 간염 예방접종을 시행한 이래 국내에서 사용 중인 B형 간염 백신들의 항체 양전률에 대한 보고는 접종 일정, 접종 용량, 항체 검사 방법 및 항체 양성기준 등이 서로 상이하여 그 효과를 비교하기에 논란이 있어 왔다. 이에 저자들은 B형 간염 예방접종 후에 항체 양전률을 조사한 국내 문헌들에 대한 분석을 통해 접종되고 있는 B형 간염 백신의 효과를 맡아 보고자 하였다. 방 법 : 각과 의학회지 및 분과 학회지, 의과대학 학회지 등에서 B형 간염 백신을 접종하고 항체 양전율을 보고한 논문을 대상으로 하였다. 논문의 포함 기준은 검사 방법이 방사선 면역법 또는 효소결합 면역흡착 검사법이고 혈청 방어 항체가를 10mIU/mL 이상으로 하거나 기준 비율(sample ratio unit)를 10 ratio unit(RU) 이상으로 한 경우이며 이를 기준으로 항체 양전률을 구할 수 있는 경우로 하였다. 제외 기준은 접종 용량이 불분명하거나 불규칙한 경우, 항체 양전률이 없는 경우, 양성 기준 항체가 또는 기준 비율을 10mIU/mL 또는 10RU로 정하지 않았거나 변환할수 없는 경우, 접종 일정이 0-1-2개월 또는 0-1-6개월이 아닌 경우, 접종 백신의 기원이 명시되지 않은 경우로 하여, 52편 중 29편을 제외한 23편의 논문을 대상으로 항체 양전률을 분석하였다. 결 과 : 1) 접종 연령에 따른 항체 양전률의 가중 펑균은 Hepaccine(제일제당)의 경우 영아에서 85.1%, 소아에서 83.3%, 성인에서 62.7%로 영아와 소아에서 성인보다 항체 양전률이 높았다(P<0.01). Hepavax(녹십자)의 경우는 영아에서 84.7%, 소아에서 81.1%, 성인에서 90.8%로 소아에서 더 낮은 항체양전률을 나타내었다(P<0.01). 2) Hepavax(녹십자)를 0-1-6개월에 접종한 경우 항체 양전률의 가중 평균은 85.6%였고 0-1-2개월에 접종한 경우는 78.5%로 0-1-6개월에 접종한 경우가 항체 양전률이 더 높은 것으로 나타났다(P<0.01). 3) 영아 및 소아에서 Hepavax(녹십자)를 $5{\mu}g$ 접종한 경우와 $10{\mu}g$ 접종한 경우의 항체 양전률에는 차이가 없었다(P<0.38). 4) 성인에서 Hepaccine 접종 후 항체 양전률의 가중 평균은 62.7%. Hepavax는 90.8%였고 Engerix-B의 경우 94.8%로 Hepavax와 Engerix-B가 Hepaccine 보다 항체 양전률이 높게 나타났다(P<0.01). 결 론 : 본 조사를 동하여 만성 B형 간염 환자의 보유율이 높은 국내에서 원래 정해진 일정을 변경하는 방법은 항체 생성을 극대화하지 못하므로 주의할 필요가 있으며 백신의 면역원성을 높이기 위해서는 과거보다 더 효과적인 백신을 개발하고, 올바른 접종 방법을 지키도록 노력하여야 할 것으로 생각되었다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권2호
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• pp.637-642
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• 2014

The pathogenesis of hepatocellular carcinoma (HCC) related to habitual betel quid (BQ) chewing is unclear. Risk of HCCis increased with adverse hepatic fibrosis. This study aimed to assess the impact of chronic viral hepatitis on adverse hepatic fibrosis in HCC related to BQ chewing. This hospital-based case-control study enrolled 200 pairs of age- and gender-matched patients with HCC and unrelated healthy controls. Serologic hepatitis B surface antigen (HBsAg), antibodies to hepatitis C virus (anti-HCV), ${\alpha}$-fetoprotein (AFP), and surrogate markers for significant hepatic fibrosis were measured. Information on substance-use habits was obtained with a questionnaire. By analysis of surrogate markers for hepatic fibrosis, the prevalence of significant hepatic fibrosis in patients chewing BQ was between 45.8% and 91.7%, whereas that for patients without BQ chewing was between 18.4% and 57.9%. The difference was significant (P <0.05 for each surrogate marker). Multivariate analysis indicated that cirrhosis with Child-Pugh C (odds ratio (OR) = 3.28; 95% confidence interval (CI), 1.29-8.37), thrombocytopenia (OR = 3.92, 95% CI, 1.77-8.68), AFP >400 mg/L (OR = 2.21, 95% CI, 1.05-4.66) and male gender (OR = 4.06, 95% CI, 1.29-12.77) were independent factors associated with habitual BQ chewing. In conclusion, adverse hepatic fibrosis and severe liver damage play important roles in the pathogenesis of BQ-related HCC, which could be aggravated by chronic hepatitis B and hepatitis C. BQ-cessation programs and prevention of chronic HBV/HCV infection are needed to prevent HCC related to BQ chewing.

• Restorative Dentistry and Endodontics
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• 제19권1호
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• pp.106-113
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• 1994

Dental professions are considered high risk for contracting hepatitis infection. In Korea, many patients are hepatitis B virus carriers. HBV are most efficiently transmitted by blood. Root canal treatment, as in cases of acute pulpitis always accompanied by contaminated blood. Therefore it is absolutely necessary to use irrigation solutions having strong antiviral effect for prophylaxis both dental personnel and patients. The purpose of this study was to investigate the antiviral effect of seven root canal irrigation solutions by radioimmunometric test. The solutions were 5% sodium phyochlorite, 5% cresol, 2% glutaraldehyde, 3% hydrogen peroxide, 0.05% chlorohexidine, 10% iodine, and 70% isoprophyl alcohol. Each irrigation solutions was mixed with serum preparated from HBsAg positive patients and sera were diluted to 1:1. 1:4. 1:20 and 1:100. Percentage of radioactivity was assayed with AUK(Sorbin biomedica, Italy) and COBRA(Packwood Instrument company, USA). Sodium hypochlorite and glutaraldehyde showed most strong antivral activity against HBsAg. Isoprophyl alcohol had moderate antiviral effect and the effect and the effect was increased especially in 1:4 solution. Hydrogen peroxide exihibited very weak aintivral activity. Cresol, chlorohexidine, and iodine exhibited little antiviral activity.

• Asian Pacific Journal of Cancer Prevention
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• 제14권12호
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• pp.7251-7256
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• 2013

Objectives: To estimate the proportion of liver cancer cases and deaths due to infection with hepatitis B virus (HBV), hepatitis C virus (HCV), aflatoxin exposure, alcohol drinking and smoking in China in 2005. Study design: Systemic assessment of the burden of five modifiable risk factors on the occurrence of liver cancer in China using the population attributable fraction. Methods: We estimated the population attributable fraction of liver cancer caused by five modifiable risk factors using the prevalence data around 1990 and data on relative risks from meta-analyses, and large-scale observational studies. Liver cancer mortality data were from the 3rd National Death Causes Survey, and data on liver cancer incidence were estimated from the mortality data from cancer registries in China and a mortality/incidence ratio calculated. Results: We estimated that HBV infection was responsible for 65.9% of liver cancer deaths in men and 58.4% in women, while HCV was responsible for 27.3% and 28.6% respectively. The fraction of liver cancer deaths attributable to aflatoxin was estimated to be 25.0% for both men and women. Alcohol drinking was responsible for 23.4% of liver cancer deaths in men and 2.2% in women. Smoking was responsible for 18.7% and 1.0%. Overall, 86% of liver cancer mortality and incidence (88% in men and 78% in women) was attributable to these five modifiable risk factors. Conclusions: HBV, HCV, aflatoxin, alcohol drinking and tobacco smoking were responsible for 86% of liver cancer mortality and incidence in China in 2005. Our findings provide useful data for developing guidelines for liver cancer prevention and control in China and other developing countries.

• Biotechnology and Bioprocess Engineering:BBE
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• 제9권2호
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• pp.127-131
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• 2004

A low-cost, simple strip reader system using a linear movement mechanism of CD-ROM deck has been developed to characterize a lateral flow membrane-based immunochromatographic assay. The test strip reader was assembled by a CD-ROM deck and home-made optical head especially designed for immunoassays. The optical head for detecting reflected light from the test strip surface consists of green light-emitting diode, large area silicon photodiode, and anodized aluminum mounting block providing a slit structure for cutting light from the LED. The stepping motor of the deck was operated in the full step mode, whose distance of each reading point is about 0.15mm. The performance of the strip reader was tested by analysis of HBV(hepatitis B virus) antigen test kit. This strip reader can be useful for inexpensive, disposable, and membrane-based assays that provide visual evidence of the presence of an analyte in a liquid sample.

• Bulletin of the Korean Chemical Society
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• 제33권10호
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• pp.3417-3422
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• 2012

A new method for the construction of 3-aminoindole nucleosides of 2-acetamido-2-deoxy-D-glucose based is presented. Nitration and acetylation of the indole nucleosides by acetic anhydride-nitric acid mixture followed by reduction using silver catalyst (SNSM) impregnated on silica gel, afforded the corresponding amino indole nucleosides. The nucleosides were tested for antiviral activity against hepatitis B virus (HBV) to show different degrees of antiviral activities or inhibitory actions.

• 한국융합학회논문지
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• 제11권1호
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• pp.77-82
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• 2020

B형 간염 예방접종 전후 연령별 B형 간염 표면항체 양성률을 분석하기 위하여 제주지역 종합병원 검사의학과에 B형 간염 표면항체 검사가 의뢰된 13,855명의 혈청 검체를 대상으로 CMIA법으로 조사하였다. HBs Ab 양성률은 5,176건으로 37.36%이었으며, 성별에 따른 양성률은 여자가 40.13%로 남자의 34.77%보다 높게 나타났다. HBs Ab 측정 평균값이 가장 높은 연령군은 40대(399.86 mIU/mL)이었으며, 가장 낮은 연령군은 90대(211.50 mIU/mL)로 나타났다. HBs Ab 양성률이 가장 높은 연령군은 30대이며, 10대의 양성률이 가장 낮은 분포를 보인 것은 주목할 만하다. 10대~20대의 B형 간염 표면항체 양성률이 현저히 감소하는 경향을 보였으며, 특히 15, 18, 19세가 통계적으로 유의하였다. 이에 예방접종의 역가의 측정을 고려하고 추가접종 시기를 명확히 해야 한다고 사료된다.