目的研究胆囊胆固醇结石患者肝脏的核受体基因:肝脏X受体α(liver X receptor α,LXRα)、法尼醇受体(farnesoid X receptor,FXR)、人类固醇异生物受体(steroid xenobiotic receptor,SXR)及肝受体同类物1(liver receptor homolog 1,LRH...目的研究胆囊胆固醇结石患者肝脏的核受体基因:肝脏X受体α(liver X receptor α,LXRα)、法尼醇受体(farnesoid X receptor,FXR)、人类固醇异生物受体(steroid xenobiotic receptor,SXR)及肝受体同类物1(liver receptor homolog 1,LRH-1)的表达,探讨胆固醇结石病的发病机理。方法27例胆囊胆固醇结石患者(胆石组),男6例,女21例,平均年龄(52.44±1.92)岁。10例无胆石症的胆囊息肉患者为对照(对照组),男6例,女4例,平均年龄(47.10±2.73)岁。测定胆石胆固醇成分及血清脂类成分:总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-ch)、载脂蛋白(Apo)B和ApoA1和胆汁脂类成分(胆固醇、磷脂和胆汁酸),并计算胆汁总脂和胆汁胆固醇饱和指数。实时定量PCR法测定肝脏LRH-1、FXR、SXR及LXRα基因的表达量。结果胆石组血清中HDL-ch浓度明显低于对照组〔(0.93±0.05)mmol/L vs(1.33±0.09)mmol/L〕,P<0.001;ApoA1浓度也低于对照组〔(1.19±0.05)g/L vs(1.36±0.06)g/L〕,P<0.05;血清ApoB、TC和TG2组比较差异均无统计学意义(P>0.05)。胆石组胆汁呈胆固醇过饱和(胆固醇过饱和指数:1.17±0.02 vs 0.79±0.10,P<0.001);胆汁胆固醇摩尔百分比浓度较对照组升高〔(7.96±0.39)mol% vs(5.26±0.89)mol%〕,P<0.01;胆汁总脂较对照组明显下降〔(104.72±10.51)g/L vs(154.24±14.20)g/L〕,P<0.05;胆汁中胆汁酸和磷脂成分2组比较差异均无统计学意义(P>0.05)。胆石组LRH-1表达高于对照组(14.18±1.80 vs 7.22±2.22),P<0.05,LXRα、FXR和SXR表达2组差异无统计学意义(P>0.05)。结论人类肝脏LRH-1的表达增高与胆囊胆固醇结石形成有关。展开更多
The feca! bite acids were extracted from 21 patients with large bowel (colonic and rectal) cancer and 21 controls, and the bile acid composition and concentration were measured by gas chromatography. The total bile ac...The feca! bite acids were extracted from 21 patients with large bowel (colonic and rectal) cancer and 21 controls, and the bile acid composition and concentration were measured by gas chromatography. The total bile acid concentration and concentration of individual bile acids were not statistically different between colonic and rectal cancer. Bat the concentration and the percentage composition of secondary bile acids (deoxycholic and lithocholic acids) were significantly higher than that in controls. However the percentage composition of primary bile acids (cholic and chenocholic acids) were significantly lower than that in controls. The results suggest that incidence of large bowel cancer is closely related to the metabolism of fecal bile acids, and the etiology of colonic and rectal cancers may be the same.展开更多
文摘目的研究胆囊胆固醇结石患者肝脏的核受体基因:肝脏X受体α(liver X receptor α,LXRα)、法尼醇受体(farnesoid X receptor,FXR)、人类固醇异生物受体(steroid xenobiotic receptor,SXR)及肝受体同类物1(liver receptor homolog 1,LRH-1)的表达,探讨胆固醇结石病的发病机理。方法27例胆囊胆固醇结石患者(胆石组),男6例,女21例,平均年龄(52.44±1.92)岁。10例无胆石症的胆囊息肉患者为对照(对照组),男6例,女4例,平均年龄(47.10±2.73)岁。测定胆石胆固醇成分及血清脂类成分:总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-ch)、载脂蛋白(Apo)B和ApoA1和胆汁脂类成分(胆固醇、磷脂和胆汁酸),并计算胆汁总脂和胆汁胆固醇饱和指数。实时定量PCR法测定肝脏LRH-1、FXR、SXR及LXRα基因的表达量。结果胆石组血清中HDL-ch浓度明显低于对照组〔(0.93±0.05)mmol/L vs(1.33±0.09)mmol/L〕,P<0.001;ApoA1浓度也低于对照组〔(1.19±0.05)g/L vs(1.36±0.06)g/L〕,P<0.05;血清ApoB、TC和TG2组比较差异均无统计学意义(P>0.05)。胆石组胆汁呈胆固醇过饱和(胆固醇过饱和指数:1.17±0.02 vs 0.79±0.10,P<0.001);胆汁胆固醇摩尔百分比浓度较对照组升高〔(7.96±0.39)mol% vs(5.26±0.89)mol%〕,P<0.01;胆汁总脂较对照组明显下降〔(104.72±10.51)g/L vs(154.24±14.20)g/L〕,P<0.05;胆汁中胆汁酸和磷脂成分2组比较差异均无统计学意义(P>0.05)。胆石组LRH-1表达高于对照组(14.18±1.80 vs 7.22±2.22),P<0.05,LXRα、FXR和SXR表达2组差异无统计学意义(P>0.05)。结论人类肝脏LRH-1的表达增高与胆囊胆固醇结石形成有关。
文摘The feca! bite acids were extracted from 21 patients with large bowel (colonic and rectal) cancer and 21 controls, and the bile acid composition and concentration were measured by gas chromatography. The total bile acid concentration and concentration of individual bile acids were not statistically different between colonic and rectal cancer. Bat the concentration and the percentage composition of secondary bile acids (deoxycholic and lithocholic acids) were significantly higher than that in controls. However the percentage composition of primary bile acids (cholic and chenocholic acids) were significantly lower than that in controls. The results suggest that incidence of large bowel cancer is closely related to the metabolism of fecal bile acids, and the etiology of colonic and rectal cancers may be the same.