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HBV : O-037 ; A nationwide seroprevalence of hepatitis B virus in 2009, Korea
( Byung Seok Lee ),( Yong Kyun Cho ),( In Hee Kim ),( Sook Hyang Jeong ),( Do Young Kim ),( Joon Hyeok Lee ),( Young Joo Jin ),( Don Lee ),( Dong Jin Suh ),( Kwang Hyub Han ),( Sun Jae Lee ),( Kyung A 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-
Background/Aims: Hepatitis B virus (HBV) infection is the major cause of chronic liver disease and hepatocellular carcinoma in Korea. After hepatitis B vaccine era, the seroprevalence of hepatitis B surface antigen (HBsAg) is decreasing, especially in children and adolescents. In this study we estimated the nationwide, age-, sex- and area- adjusted seroprevalence of HBV infection in 2009. Methods: We reviewed data of a total of 290,212 subjects who had received health check-up examination in 27 institutions from January to December 2009. The estimated seroprevalence was adjusted by age, sex and area of the standard population based on the 2009 Census of Korea. Results: The overall seroprevalences of HBsAg and anti-HBs adjusted by age, sex and area were 4.0% and 73.5%, respectively. The area- and age- adjusted HBsAg positivity was higher in men (4.5%) than in women (3.4%) (p<0.001). The sex- and area- adjusted HBsAg positivity was the most common in forties and showed decreasing trend in age. The HBsAg positivity in Southern province including Jeju was significantly higher than that in central province(p<0.001). The area- and age- adjusted anti-HBs positivity was lower in men (71.6%) than in women (75.4%) (p<0.001). The seropositivity of anti-HBs was the lowest in Jeonnam. The concurrent positivity of HBsAg and anti-HBs was found in 0.1% of the subjects. The comparison between patients showing sole positive for HBsAg and patients showing concurrent positive for HBsAg and anti-HBs will be presented. Conclusions: The seroprevalence of HBV infection showed differences according to age, sex and areas in Korea. As the seroepidemiology is dynamically changing, and the overall seropositivity of HBsAg has shown continuously decreasing trend.
뇌척수액 비루의 외과적 치험 5례 : Report of Five Operative Cases
한병갑,강성돈,김종문 대한신경외과학회 1990 Journal of Korean neurosurgical society Vol.19 No.1
This report describes five cases of cerebrospinal fluid(CSF) rhinorrhea which were caused by head injury in four cases and developed after surgical removal of brain tumor in one case. Intrathecally-enhanced brain computerized tomography (CT) with metrizamide, in addition to isotope cisternography, was helpful in localization of the CSF leakage site. All five cases which could not be managed conservatively were successfully repaired by surgical means using biological fibrin glue.
Oxygen Refining of Molten High - Carbon Ferromanganese
HAN, Jeong Whan,You, Byung Don,Park, Kab Yong,Pak, Jong Jin 대한금속재료학회(대한금속학회) 1999 METALS AND MATERIALS International Vol.5 No.4
The effects of the oxygen/argon mixing ratio and temperature on the decarburization behaviour of high-carbon ferromanganese melts were investigated. The decarburization reaction was promoted and the oxidation reaction of manganese diminished by increasing temperature and decreasing the oxygen/argon mixing ratio. However, the carbon content in the melt appeared to increase during blowing at low temperatures and high oxygen/ argon mixing ratios because of faster manganese oxidation. An empirical equation was derived to predict the utilization ratio of oxygen for decarburization. The lower oxygen/argon mixing ratio and higher melt temperature were found to be essential in enhancing the efficiency of decarburization and suppressing the oxidation of manganese in the early stage of oxygen/argon refining of high-carbon ferromanganese melts.
HBV : O-037 ; A nationwide seroprevalence of hepatitis B virus in 2009, Korea
( Byung Seok Lee ),( Yong Kyun Cho ),( In Hee Kim ),( Sook-Hyang Jeong ),( Do Young Kim ),( Joon Hyeok Lee ),( Young-Joo Jin ),( Don Lee ),( Dong Jin Suh ),( Kwang-Hyub Han ),( Sun Jae Lee ),( Kyung-A 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.1
Background/Aims: Hepatitis B virus (HBV) infection is the major cause of chronic liver disease and hepatocellular ADAM17 gene was more increased in CD133+ cells than CD133- cells treated with g-irradiation. In addition CD133+ cells from radiation exposure were consistently expressed higher levels of vascular endothelial growth factor by Multiplex cytokine analysis. After irradiation, CD133+ cells migrated more actively, and showed an increased invasion rate compared to CD133- cell. Gelatin zymography showed that MMP-2, -9 expressions are significantly higher in CD133+ cells. Furthermore, shADAM17CD133+ cells reduced migration activity after g-irradiation exposure. Conclusions: These results suggest that CD133+ cells have more metastatic capacity than CD133- cells after treating irradiation. These data further suggest that molecular therapeutic inhibition of cell migration and invasion through ADAM17 suppression may represent a new approach for improving the therapeutic efficacy of radiotherapy for HCC. This work was funded by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2011-0027071).