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제5차 대한간학회 춘계학술대회 초록집 : 간경변증환자에서 급성 정맥류 출혈의 치료로써 Somatostatin과 Vasopressin의 효과에 대한 무작위 전향적인 비교연구
이헌영 ( Lee Heon Yeong ),이헌주 ( Lee Heon Ju ),이승민 ( Lee Seung Min ),이경태 ( Lee Gyeong Tae ),김준환 ( Kim Jun Hwan ),권순욱 ( Kwon Sun Ug ),이병석 ( Lee Byeong Seog ),김남재 ( Kim Nam Jae ) 대한간학회 1999 Clinical and Molecular Hepatology(대한간학회지) Vol.5 No.1(S)
HBsAg 양성 간경변증 환자에서 일시적인 혈중 alpha fetoprotein (α-FP) 상승의 간세포암종 발생에 대한 의의
이헌영 ( Lee Heon Yeong ),정재훈 ( Jeong Jae Hun ),강윤세 ( Kang Yun Se ),김연수 ( Kim Yeon Su ),문희석 ( Mun Hui Seog ),박기오 ( Park Gi O ),이엄석 ( Lee Eom Seog ),김선문 ( Kim Seon Mun ),서승원 ( Seo Seung Won ),이상우 ( Lee Sa 대한소화기학회 2004 대한소화기학회지 Vol.43 No.4
Background/Aims: Serum alpha fetoprotein (α-FP) measurement has a limitation to detect hepatocellular carcinoma (HCC) because it is elevated in various liver diseases. Therefore, we studied the sensitivity and specificity of high α-FP in the diagnosis of HCC. Methods: We studied 253 patients with HBsAg positive liver cirrhosis prospectively. We analyzed incidence of HCC related cut-off values of serum α-FP levels. During the follow-up period, we analyzed sensitivity and specificity of cut-off values of α-FP for the diagnosis of HCC, and α-FP elevation rate in relation to mass size. Results: One hundred and twenty-five patients had a transient elevation of α-FP levels above 20 ng/mL. The corresponding incidences of HCC were 27.2% (34/125) and 15.6% (20/128 patients without elevation of α-FP), respectively with a statistically significant difference (p=0.03). Among 54 patients with HCC, 18 patients (33.0%) had levels of α-FP below 20 ng/mL on the time of diagnosis of HCC. When we defined cut-off values of serum α-FP as 20, 100 and 500 ng/mL, the corresponding sensitivity and specificity for HCC were 62.9% and 24.0%, 7.4% and 54.2%, 77.3% and 91.9%, respectively. We studied sensitivity according to cut-off values of α-FP defined as 20, 100, 200, 500 ng/mL in patients with small HCC below 2 cm. The corresponding sensitivity were 50.0%, 43.7%, 25.0%, 18.7%, respectively. In patients with levels of serum α-FP below 20 ng/mL, percentages of mass size less than 2 cm, 2~3 cm, 3~5 cm and more than 5 cm were 50.0%, 25.0%, 28.5% and 25.0%, respectively. Conclusions: We suggested that in order to detect HCC, careful periodic monitoring with α-FP, ultrasonography and abdominal computed tomography is needed in patients with HBsAg positive liver cirrhosis and whose serum level of α-FP is above 20 ng/mL. (Korean J Gastroenterol 2004;43:252-259)
Gilbert 증후군에서 열량 제한 시험과Phenobarbital 자극 시험의 의의(14예)
이헌영 ( Lee Heon Yeong ),채경훈 ( Chae Gyeong Hun ),허원석 ( Heo Won Seog ),정재훈 ( Jeong Jae Hun ),강윤세 ( Kang Yun Se ),김연수 ( Kim Yeon Su ),문희석 ( Mun Hui Seog ),박기오 ( Park Gi O ),이엄석 ( Lee Eom Seog ),김선문 ( Kim 대한소화기학회 2003 대한소화기학회 추계학술대회 Vol.2003 No.-
<목적> Gilbert 증후군은 비진행성인 양성의 만성적 경과를 취하며, 경한 비 포합형 고 빌리루빈혈증이 특징인 일종의 체질적인 증상으로서 임상적인 중요성은 미약하지만 높은 빈도가 예상되는 점에 그 중요성이 부여되어야 할 것이다. 따라서 적정한 임상적 진단법으로 기왕에 소개된 열량제한 자극 시험과 phenobarbital 유도 시험을 시행하고 이들의 진단적 가치를 알아보기 위하여 본 연구를 시행하였다. <방법> 1990년 7월부터 1999년 4월까지
u-City 구축사업의 지역경제적 파급효과에 관한 연구
이헌영(Heon-Yeong Lee),최예술(Yeseul Choi),임업(Up Lim) 한국IT서비스학회 2012 한국IT서비스학회지 Vol.11 No.4
In recent year, the u-City construction projects which integrate IT technology into urban infrastructures are being pushed forward by many local governments. These projects contain various purposes in an aspect of regional economy : to reinforce a competitiveness of region by increasing efficiency of urban managements and to revitalize regional economy by stimulating the regional high-tech industries that related to u-City construction. In this context, regional economic impact assessment of u-City construction projects is particularly important because, it give us information about effectiveness of u-City construction policy as a stimulus of regional high-tech industries and the policy feasibility of u-City construction projects that can be a base of public projects. However, it is challenging to assess the impact of u-City projects on regional economy properly due to a lack of understanding about industrial classification. and specific industrial inputs related to u-City construction. In this study, we suggest u-City industrial classifications, and specific-industrial inputs induced by u-City construction projects based on associated legislations. business report for a u-City construction, and results from previous studies. Using these classification and industrial input, we also investigate the regional economic impacts of a u-City construction project in Wha-sung and Dong-tan cities employing Input-output analysis. The empirical results suggests that u-City industries have. relatively high in production inducement, and value added inducement compared to input of other industrial sectors. These results indicate that regional economic impact of a Wha-sung and Dong-tan u-City construction project are relatively high, but economic impacts of u-City construction projects vary according to the regional industrial structure, and the specific expense accounts of u-City construction projects.
제5차 대한간학회 춘계학술대회 초록집 : 포스터 토의 순서 ; Salmonella typhi에 의한 급성 간염의 임상적 고찰: 급성 B형 바이러스 간염과의 비교분석
이경태 ( Lee Gyeong Tae ),양현웅 ( Yang Hyeon Ung ),서승원 ( Seo Seung Won ),성재규 ( Seong Jae Gyu ),이상우 ( Lee Sang U ),이승민 ( Lee Seung Min ),이병석 ( Lee Byeong Seog ),김남재 ( Kim Nam Jae ),이헌영 ( Lee Heon Yeong ) 대한간학회 1999 Clinical and Molecular Hepatology(대한간학회지) Vol.5 No.1(S)
이명극 ( Lee Myeong Geug ),강원권 ( Kang Won Gwon ),김민범 ( Kim Min Beom ),박철신 ( Park Cheol Sin ),이헌영 ( Lee Heon Yeong ),김삼용 ( Kim Sam Yong ),이복희 ( Lee Bog Hui ) 대한내과학회 1990 대한내과학회지 Vol.38 No.6
N/A To investigate the B-cell function in patients with chronic liver diseases, a peripheral blood T-cell subset, a delayed type skin reaction, serum levels of IgG, IgA, IgM and in vitro production of IgA, IgG were studied in patients with chronic liver diseases(10 cases of chronic hepatitis, 12 cases of liver cirrhosis). The results were as follows: 1) The percentage of peripheral blood suppressor T-cell(CD8 positive) decreased in patients with chronic hepatitis(p<0.05). 2) The results of delayed type skin reaction with CMI test showed no difference between normal subjects and patients with chronic liver diseases. 3) Serum IgG, IgA and IgM levels increased in patients with chronic hepatitis and in patients with liver cirrhosis(p<0.05). Serum IgA levels in patients with liver cirrhosis showed the most prominent increase(330% of control). 4) Unstimulated in vitro IgA production from peripheral blood mononuclear cell lymphocytes was higher in patients with liver cirrhosis(p<0.05). IgA production stimulated with pokeweed mitogen was not different from that of the normal control subjects. IgG production stimulated with pokeweed mitogen was lower in patients with liver cirrhosis(n=5)(p<0.05, Wilcoxon rank sum test). The results of the present study indicate that there is no major defect in cellular immunity in patients with chronic liver diseases and that the B cells in patients with chronic liver disease are polyclonally activated in vivo. In patients with liver cirrhosis, the IgA-producing B cells seem predominently activated in comparison with the IgG-or IgM-producing B-cells.
소화기암에서 조직내 Carcinoembryonic Antigen 측정치와 DNA 배수성과의 관계에 대한 연구
정현용 ( Jeong Hyeon Yong ),김병호 ( Kim Byeong Ho ),성자원 ( Seong Ja Won ),허승식 ( Heo Seung Sig ),이기천 ( Lee Gi Cheon ),이헌영 ( Lee Heon Yeong ),김영건 ( Kim Yeong Geon ),노승무 ( No Seung Mu ),윤완희 ( Yun Wan Hui ),장일성 대한내과학회 1993 대한내과학회지 Vol.44 No.2
Background : This study was performed to obtain additional information about intratumor heterogeneity and prognosis of gastrointestinal cancers, as defined by different DNA stemlines in relation to tumor CEA expression na clinicopathologic characteristics. Methods : In 26 patients with stomach cancer and 14 patients with colorectal cancer, carcinoembryonic antigen concentrations in tissue extracts were measured by radioimmunoassay and the DNA ploidy patterns of same specimens were determined by flow cytometry. Result : 1) Mean tissuc CEA concentrations in the normal gastric mucosa of the patients with stomach cancers was 10.2ng/gm. Tissue CEA concentrations (mean 42.1ng/gm) of stomach cancers were 4 times higher than the normal mucosa (p<0.05), significantly correlated to TNM stages. 2) Tissue CEA concentrations (mean 27.3ng/gm) in the normal colonic mucosa of the patients with colorectal cancers were higher levels than normal gastric mucosa (p<0.05). Tissue CEA concentrations (mean 164.0ng/gm) of colorectal cancers were 6 times higher than the colorectal mucosa` and 4 times higher than stomach cancer`s (p<0.05). 3) The incidence of aneuploid pattern in the stomach cancer was 44.0%, and 25.0% in the colorectal cancers. The incidence of aneuploid cancer was not significantly related to clinicopathologic findings. 4) Tissue CEA concentrations of aneuploid stomach cancers (mean 86.4ng/gm) were 6 times higher than diploid cancers (mean 14.5ng/gm) (p<0.05). Aneuploid colorectal cancers (mean 244.8ng/gm) had higher CEA levels than diploid cancers (mean 161.7ng/gm) (p<0.05). Conclusion : The production of carcinoembryonic antigen in gastrointestinal cancers was significantly correlated with aneuploid DNA stemlines. To estimate prognostic values of tissue CEA concentrations and DNA ploidity, follw up for these patients and further studies should be pursued.