目的 研究原發(fā)性肝細(xì)胞癌發(fā)生、發(fā)展過程中肝組織增殖細(xì)胞核抗原(proliferating cell nuclear antigen, PCNA)的動態(tài)演變規(guī)律。
方法 將60只SD大鼠按隨機(jī)數(shù)字表法隨機(jī)分為對照組(20只)和實(shí)驗(yàn)組(40只)。用化學(xué)致癌劑3,3′-二氨基聯(lián)苯胺(3,3′-diaminobenzidine,DAB)誘發(fā)SD大鼠肝癌,采用免疫組織化學(xué)方法連續(xù)監(jiān)測各時(shí)相肝組織中PCNA的表達(dá),光鏡下觀察肝組織的病理變化。
結(jié)果 本實(shí)驗(yàn)的誘癌過程可分為炎性變期、增生纖維化期和癌變期3個(gè)階段; PCNA的表達(dá)最早出現(xiàn)于炎性變早期匯管區(qū)的卵圓細(xì)胞中,并在匯管區(qū)呈區(qū)域性過表達(dá)分布; 炎性變中期,PCNA表達(dá)陽性率達(dá)高峰,隨后下降,在癌變期又升高,在整個(gè)病理演變過程中其表達(dá)具波動性。
結(jié)論 在致癌因素的存在下,PCNA首先表達(dá)于卵圓細(xì)胞; PCNA表達(dá)的動態(tài)演變對肝癌的發(fā)生有一定的預(yù)警作用。
引用本文: 龔加慶,方馳華. 大鼠肝癌發(fā)生發(fā)展過程中肝組織增殖細(xì)胞核抗原動態(tài)演變規(guī)律. 中國普外基礎(chǔ)與臨床雜志, 2007, 14(1): 11-14. doi: 復(fù)制
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- 2. Chung JK, Lee T, Jung IM, et al. Expression of cell cycle regulators during smooth muscle cell proliferation after balloon catheter injury of rat artery [J]. J Korean Med Sci, 2004; 19(3)∶327.
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