目的:快速建立一种非酒精性脂肪肝大鼠模型.方法:24只♂SD大鼠随机平均分为正常组、常规组和改良组,分别喂普通基础饲料、常规用高脂饲料及常规高脂饲料+蔗糖+丙基硫氧嘧啶+胆酸钠.5 wk内动态观察三组大鼠的一般情况、体质量变化,均5 w...目的:快速建立一种非酒精性脂肪肝大鼠模型.方法:24只♂SD大鼠随机平均分为正常组、常规组和改良组,分别喂普通基础饲料、常规用高脂饲料及常规高脂饲料+蔗糖+丙基硫氧嘧啶+胆酸钠.5 wk内动态观察三组大鼠的一般情况、体质量变化,均5 wk处死,观察大鼠肝脏病理形态变化,苏丹Ⅳ染色和电镜检测了解大鼠肝细胞胞质内脂滴存在情况,并比较三组大鼠血清甘油三酯(TG)、胆固醇(TC)、谷丙转氨酶(ALT)、谷草转氨酶(AST)水平、丙二醛(MDA)含量和超氧化物歧化酶(SOD)活力及肝组织甘油三酯(TG)、胆固醇(TC)含量的变化.结果:第4周开始正常组和改良组两组大鼠与常规组体质量之间有显著性差异(249.63±34.25,241.88±20.75 vs 275.38±6.59,P<0.05),改良组与正常组之间体质量无显著性差异(P>0.05).第5周在光镜下见改良组大鼠肝细胞内弥漫大量的脂肪空泡,电镜和苏丹Ⅳ染色证实肝细胞内有大量脂滴.肝脂肪变性程度为+～+++(H=13.36,P=0.0003),正常组和常规组大鼠肝细胞内未见明显脂肪变性.改良组大鼠血清TG,TC,ALT水平和MDA含量均高于正常组和常规组(TG:1.28±0.61 mmol/L vs 0.72±0.12,0.76±0.04 mmol/L;TC:12.78±1.47 mmol/L vs 1.71±0.03,2.31±0.49 mmol/ L;ALT:1518.64±186.04 nkat/L vs 1181.57±37.84,1262.92±159.20 nkat/L;MDA:13.40±4.24μmol/L vs 5.89±1.05,7.23±1.15μmol/L;均P<0.05),常规组与正常组比无显著差异(P>0.05);而改良组血清SOD活力显著低于正常组和常规组(5.21±0.81 nkat/mL vs 11.91±2.69,11.19±0.78 nkat/mL,P<0.05).肝组织TG,TC含量常规组和模型组均比正常组有增高(TG:2.14±0.26,5.83±1.42 mmol/L vs 1.20±0.16 mmol/L,P<0.05;TC:3.19±0.23,9.63±1.12 mmol/L vs 2.13±0.16 mmol/L,P<0.05),常规组与改良组也有显著差异(P<0.05).结论:通过与利用常规高脂饲料建模的方法比较,该改良方法5 wk成功地构建了非酒精性脂肪肝大鼠模型,缩短了建模时间,降低了实验成本且模型基本展开更多
AIM: To determine characteristics and prognosticpredictors of patients with hepatocellular carcinoma(HCC) in association with non-alcoholic fatty liver disease(NAFLD).METHODS: We reviewed the records of all patients w...AIM: To determine characteristics and prognosticpredictors of patients with hepatocellular carcinoma(HCC) in association with non-alcoholic fatty liver disease(NAFLD).METHODS: We reviewed the records of all patients with NAFLD associated HCC between 2000 and 2012. Data collected included demographics; histology; presence or absence of cirrhosis, size and number of HCC, alpha-fetoprotein, body mass index(BMI), and the presence of diabetes, hypertension, or dyslipidaemia.RESULTS: Fifty-four patients with NAFLD associated HCC were identified. Mean age was 64 years with 87% male. Fifteen percent(8/54) were not cirrhotic. 11%, 24% and 50% had a BMI of < 25 kg/m2, 25-29 kg/m2 and ≥ 30 kg/m2 respectively. Fifty-nine percent were diabetic, 44% hypertensive and 26% hyperlipidaemic. Thirty-four percent of the patients had ≤ 1 of these risk factors. Non-cirrhotics had a significantly larger mean tumour diameter at diagnosis than cirrhotics(P = 0.041). Multivariate analysis did not identify any other patient characteristics that predicted the size or number of HCC.CONCLUSION: HCC can develop in NAFLD without cirrhosis. At diagnosis such tumours are larger than those in cirrhotics, conferring a poorer prognosis.展开更多
文摘目的:快速建立一种非酒精性脂肪肝大鼠模型.方法:24只♂SD大鼠随机平均分为正常组、常规组和改良组,分别喂普通基础饲料、常规用高脂饲料及常规高脂饲料+蔗糖+丙基硫氧嘧啶+胆酸钠.5 wk内动态观察三组大鼠的一般情况、体质量变化,均5 wk处死,观察大鼠肝脏病理形态变化,苏丹Ⅳ染色和电镜检测了解大鼠肝细胞胞质内脂滴存在情况,并比较三组大鼠血清甘油三酯(TG)、胆固醇(TC)、谷丙转氨酶(ALT)、谷草转氨酶(AST)水平、丙二醛(MDA)含量和超氧化物歧化酶(SOD)活力及肝组织甘油三酯(TG)、胆固醇(TC)含量的变化.结果:第4周开始正常组和改良组两组大鼠与常规组体质量之间有显著性差异(249.63±34.25,241.88±20.75 vs 275.38±6.59,P<0.05),改良组与正常组之间体质量无显著性差异(P>0.05).第5周在光镜下见改良组大鼠肝细胞内弥漫大量的脂肪空泡,电镜和苏丹Ⅳ染色证实肝细胞内有大量脂滴.肝脂肪变性程度为+～+++(H=13.36,P=0.0003),正常组和常规组大鼠肝细胞内未见明显脂肪变性.改良组大鼠血清TG,TC,ALT水平和MDA含量均高于正常组和常规组(TG:1.28±0.61 mmol/L vs 0.72±0.12,0.76±0.04 mmol/L;TC:12.78±1.47 mmol/L vs 1.71±0.03,2.31±0.49 mmol/ L;ALT:1518.64±186.04 nkat/L vs 1181.57±37.84,1262.92±159.20 nkat/L;MDA:13.40±4.24μmol/L vs 5.89±1.05,7.23±1.15μmol/L;均P<0.05),常规组与正常组比无显著差异(P>0.05);而改良组血清SOD活力显著低于正常组和常规组(5.21±0.81 nkat/mL vs 11.91±2.69,11.19±0.78 nkat/mL,P<0.05).肝组织TG,TC含量常规组和模型组均比正常组有增高(TG:2.14±0.26,5.83±1.42 mmol/L vs 1.20±0.16 mmol/L,P<0.05;TC:3.19±0.23,9.63±1.12 mmol/L vs 2.13±0.16 mmol/L,P<0.05),常规组与改良组也有显著差异(P<0.05).结论:通过与利用常规高脂饲料建模的方法比较,该改良方法5 wk成功地构建了非酒精性脂肪肝大鼠模型,缩短了建模时间,降低了实验成本且模型基本
文摘AIM: To determine characteristics and prognosticpredictors of patients with hepatocellular carcinoma(HCC) in association with non-alcoholic fatty liver disease(NAFLD).METHODS: We reviewed the records of all patients with NAFLD associated HCC between 2000 and 2012. Data collected included demographics; histology; presence or absence of cirrhosis, size and number of HCC, alpha-fetoprotein, body mass index(BMI), and the presence of diabetes, hypertension, or dyslipidaemia.RESULTS: Fifty-four patients with NAFLD associated HCC were identified. Mean age was 64 years with 87% male. Fifteen percent(8/54) were not cirrhotic. 11%, 24% and 50% had a BMI of < 25 kg/m2, 25-29 kg/m2 and ≥ 30 kg/m2 respectively. Fifty-nine percent were diabetic, 44% hypertensive and 26% hyperlipidaemic. Thirty-four percent of the patients had ≤ 1 of these risk factors. Non-cirrhotics had a significantly larger mean tumour diameter at diagnosis than cirrhotics(P = 0.041). Multivariate analysis did not identify any other patient characteristics that predicted the size or number of HCC.CONCLUSION: HCC can develop in NAFLD without cirrhosis. At diagnosis such tumours are larger than those in cirrhotics, conferring a poorer prognosis.
