AIM To investigate the expression of integrinsin rats liver during 3’-Me-DAB inducedhepatocarcinogenesis and to find out therelationship between integrins and liver cancermetastasis.METHODS The expressions of integri...AIM To investigate the expression of integrinsin rats liver during 3’-Me-DAB inducedhepatocarcinogenesis and to find out therelationship between integrins and liver cancermetastasis.METHODS The expressions of integrins α<sub>1</sub>,α<sub>2</sub>,α<sub>3</sub> and α<sub>5</sub> and epidermal keratin（EK）wereobserved by immunohistochemical PAP method.RESULTS In the normal liver tissues,hepatocytes express integrins α<sub>1</sub> and α<sub>5</sub> and inthe bile duct epithlium,EK.In liver cirrhosis,hepatocytes highly express integrins α<sub>1</sub>,α<sub>2</sub>,α<sub>3</sub>and α<sub>5</sub> and in hyperplastic bile duct epithelium,integrins α<sub>1</sub>,α<sub>5</sub> and EK.Expression of integrinsα<sub>1</sub>,α<sub>2</sub>,α<sub>3</sub> and α<sub>5</sub> were obviously decreased in thepreneoplastic nodules and primary carcinomabut expressions of integrins α<sub>1</sub> and α<sub>5</sub> inmetastasis in the lung and diaphragma werehigher than those in primary carcinoma.CONCLUSION Integrins α<sub>1</sub> and α<sub>5</sub> may play amajor role in chemically inducedhepatocarcinogenesis and metastasis in rats.展开更多
目的:本研究通过建立胆管癌大鼠模型,以法尼基衍生物X受体(farnesyl X receptor,FXR)为研究对象,初步探讨FXR在胆管癌大鼠胆管肿瘤组织中的表达状况,以期为治疗胆管癌找到新的方法.方法:取Wistar大鼠(■、体质量160g±8g)70只,随机...目的:本研究通过建立胆管癌大鼠模型,以法尼基衍生物X受体(farnesyl X receptor,FXR)为研究对象,初步探讨FXR在胆管癌大鼠胆管肿瘤组织中的表达状况,以期为治疗胆管癌找到新的方法.方法:取Wistar大鼠(■、体质量160g±8g)70只,随机分为2组,每组35只:普通饮食对照组(简称对照组)予以普通饮食、3'-甲基-4-二甲基氨偶氮苯(3'-Me-DAB)饮食实验组(简称实验组)予以含3'-Me-DAB饮食.经过20wk,建立胆管癌大鼠模型,取对照组胆管组织和实验组胆管肿瘤组织:(1)实时荧光定量PCR(real-time quantitative PCR,qRT-PCR)检测胆管组织和胆管肿瘤组织的FXR基因表达的强度;(2)石蜡切片后用免疫组织化学SP法检测胆管组织和胆管肿瘤组织的FXR蛋白表达的强度.结果:(1)qRT-PCR结果显示:FXR/GAPDH比率在对照组胆管组织中为32,在实验组胆管肿瘤组织中为9,两组间的表达有统计学差异;(2)免疫组织化学SP法结果显示,对照组胆管组织FXR表达阳性率为72.6%,实验组胆管肿瘤组织FXR表达阳性率为21.3%,存在统计学意义(P<0.05).结论:实验组大鼠胆管肿瘤组织的FXR基因的表达较对照组胆管组织减少,提示我们在胆管癌的治疗中,FXR基因有成为新治疗靶点的可能.展开更多
基金The Ninth Five-Year Key Program of the Ministry of Health (JB02 96-906-01-15)
文摘AIM To investigate the expression of integrinsin rats liver during 3’-Me-DAB inducedhepatocarcinogenesis and to find out therelationship between integrins and liver cancermetastasis.METHODS The expressions of integrins α<sub>1</sub>,α<sub>2</sub>,α<sub>3</sub> and α<sub>5</sub> and epidermal keratin（EK）wereobserved by immunohistochemical PAP method.RESULTS In the normal liver tissues,hepatocytes express integrins α<sub>1</sub> and α<sub>5</sub> and inthe bile duct epithlium,EK.In liver cirrhosis,hepatocytes highly express integrins α<sub>1</sub>,α<sub>2</sub>,α<sub>3</sub>and α<sub>5</sub> and in hyperplastic bile duct epithelium,integrins α<sub>1</sub>,α<sub>5</sub> and EK.Expression of integrinsα<sub>1</sub>,α<sub>2</sub>,α<sub>3</sub> and α<sub>5</sub> were obviously decreased in thepreneoplastic nodules and primary carcinomabut expressions of integrins α<sub>1</sub> and α<sub>5</sub> inmetastasis in the lung and diaphragma werehigher than those in primary carcinoma.CONCLUSION Integrins α<sub>1</sub> and α<sub>5</sub> may play amajor role in chemically inducedhepatocarcinogenesis and metastasis in rats.
文摘目的:本研究通过建立胆管癌大鼠模型,以法尼基衍生物X受体(farnesyl X receptor,FXR)为研究对象,初步探讨FXR在胆管癌大鼠胆管肿瘤组织中的表达状况,以期为治疗胆管癌找到新的方法.方法:取Wistar大鼠(■、体质量160g±8g)70只,随机分为2组,每组35只:普通饮食对照组(简称对照组)予以普通饮食、3'-甲基-4-二甲基氨偶氮苯(3'-Me-DAB)饮食实验组(简称实验组)予以含3'-Me-DAB饮食.经过20wk,建立胆管癌大鼠模型,取对照组胆管组织和实验组胆管肿瘤组织:(1)实时荧光定量PCR(real-time quantitative PCR,qRT-PCR)检测胆管组织和胆管肿瘤组织的FXR基因表达的强度;(2)石蜡切片后用免疫组织化学SP法检测胆管组织和胆管肿瘤组织的FXR蛋白表达的强度.结果:(1)qRT-PCR结果显示:FXR/GAPDH比率在对照组胆管组织中为32,在实验组胆管肿瘤组织中为9,两组间的表达有统计学差异;(2)免疫组织化学SP法结果显示,对照组胆管组织FXR表达阳性率为72.6%,实验组胆管肿瘤组织FXR表达阳性率为21.3%,存在统计学意义(P<0.05).结论:实验组大鼠胆管肿瘤组织的FXR基因的表达较对照组胆管组织减少,提示我们在胆管癌的治疗中,FXR基因有成为新治疗靶点的可能.
