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위암의 침윤과 전이에 관여하는 단백분해 효소 ( uPA , PAI - 1 및 Type 4 Collagenase ) 에 관한 연구
조재용(J . Y . Cho),정현철(H . C . Chung),노성훈(S . H . Noh),김호근(H . K . Kim),박준오(J . O . Park),이종인(J . I . Lee),유내춘(N . C . Yoo),김주항(J . H . Kim),노재경(J . K . Roh),김병수(B . S . Kim),강진경(J . K . Kang),민진식(J . S 대한내과학회 1997 대한내과학회지 Vol.52 No.1
Objectives : Prognosis of gastric cancer is related to invasion and metastasis. Evidence has accumulated that invasion and metastasis in solid tumors require the action of tumor associated proteases, which promote the dissolution of the surrounding tumor matrix and the basement membrane. The serine protease [(urokinase-type plasminogen activator and plasminogen activator inhibitor-1 (PAI-1)] and type IV collagenase(MMP-9 and MMP- 2) appear to play a key role in these processes. Recent reports have demonstrated that expression of these proteolytic enzymes are elevated in breast and colon cancer and that it can be associated with invasiveness and poor prognosis. We therefore evaluated whether the expression and activation of uPA, PAI-1 and type IV collagenase might be of clinical value in gastric cancer as a tumor/biologically defined risk factor. Methods: In a consecutive series of 160 gastric cancer patients who were enrolled in the Yonsei Cancer Center Study Group, the expression of uPA, PAI-1 and type IV collagenase was determined by ELISA, zymography and mmunohistochemical method. The results were as follows. Results: 1) Both uPA and PAI-1 levels were significantly higher in cancer tissues than no rmal (uPA; 9.4±8.7vs 5.3±3.1 ng/mg protein cytosol, PAI-1;10.9±9.1vs 5.8± 2.9 ng/mg protein cytosol), (p<0.001 respectively). Both high uPA and PAI-1 levels were associated with differentiation of the tumor(p=0.04, p=0.004), and a high PAI-1 level was associated with lymph nodes metastasis at an advanced stage (p=0.003, p=0.04). There was a correlation between the levels of uPA and PAI-1 expression in cancer tissues(r=0.57). 2) The activation ratio of MMP-9 and MMP-2 in cancer tissues 0.32±0.25, 0.27±0.34 were significantly higher than in normal tissue 0.19±0,27, 0.06± 0.16(p<0.001). The MMP-9 activation was associated with lymphnode metastasis and the MMP-2 activation was associated with distant metastasis(p=0.011, p=0.041). 3) In univariate analysis all of the proteolytic enzymes were associated with short relapse free survival, but in multivariate analysis only the high uPA expression was an independent prognostic parameter for short relapse free survival of the gastric cancer patients. Conclusion: These data indicate that uPA, PAI-1 and type IV collagenase were involved in the progression of gastric cancer at different points of time by different mechanisms. The combined expression and activation of these proteolytic enzymes were poor prognostic factors in gastric cancer patients, so new therapy based on these biologic behavior of the tumor in the same stage are clinically applicable. In particular, uPA is a new independent variable for the identification of patients at high risk, therefore therapy targetting uPA can be applied as a new treatment modality for gastric cancer.
개의 실험적 췌외분비 부전에서 단백과 탄수화물의 흡수가 지방흡수에 미치는 영향
정준표 ( J. P. Chung ),정재복 ( J. B. Chung ),이세준 ( S. J. Lee ),박승우 ( S. W. Park ),송시영 ( S. Y. Song ),이관식 ( K. S. Lee ),이상인 ( S. I. Lee ),강진경 ( J. K. Kang ),박인서 ( I. S. Park ),( E. P. Dimagno ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-
〈목적〉 췌외분비 부전에 의한 지방변의 치료는 아직 난제로서 이를 해결하기 위해서는 지방 흡수에 영향을 요인을 밝히는 것이 필요하다, 식이가 지방 흡수에 영향을 미치는 것으로 알려져 있으나, 아직 지방, 단백, 및 탄수화물 등의 흡수에 있어서 상호 관련성 여부에 대해서는 잘 알려져 있지 않다. 본 연구에서는 개의 실험적 췌외분비 부전에서 지방, 단백 및 탄수화물 등의 흡수가 효소 제제(bacterial lipase, BL; porcine lipase,
대장암 환자의 수술 후 보조항암화학요법에 있어서 UFT 및 Leukovorin (LV) 경구요법과 5-FU 및 LV 정주요법의 비교
김동주 ( D. J. Kim ),서정훈 ( J. H. Suh ),조용석 ( Y. S. Cho ),강진경 ( J. K. Kang ),김남규 ( N. K. Kim ),김원호 ( W. H. Kim ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-
〈목적〉 대장암 환자에서 근치적 수술 후 사용되는 보조항암화학요법인 5-FU 및 LV 정주요법과 UFT(tegafur+uracil) 및 LV 경구요법에서 치료에 대한 순응도, 부작용, 삶의 질 및 치료효과의 차이를 알아보고자 하였다. 〈대상 및 방법〉 1997년 7월부터 199년 6월 사이에 세브란스 병원에서 수술 받은 Dukes` B2 및 C2인 대장암 환자를 대상으로 하였다. 수술 후 보조항암화학요법으로 5-FU 및 LV 정주요법(5-FU 450mg