妊娠期肝内胆汁淤积症患者胎盘组织中有机阴离子转运多肽-A,-C表达的研究

目的 探讨有机阴离子转运多肽(organic anion transporting polypeptide,OATP)-A,-C在妊娠各期和妊娠期肝内胆汁淤积症(intrahepatic cholestasis of pregnancy,ICP)患者胎盘的表达.方法 收集2006年5月至2007年2月,在本院产科确诊为肝内胆汁淤积患者纳入ICP组(n=20);同期在门诊手术室行终止妊娠术的正常早孕期妇女8例,在计划生育科采用米非司酮+米索前列醇或水囊引产的正常中孕期妇女7例及在产科手术室行剖宫产术正常分娩的晚孕期妇女20例,纳入对照组(n=35)(本研究遵循的程序符合本院人体试验委员会所制定的伦理学标准,得到该委员会批准,分组征得受试对象本人的知情同意,并与之签署临床研究知情同意书).两组胎盘组织中OATP-A mRNA,OATP-C mRNA测定,采用实时荧光定量PCR法;胎盘组织中有机阴离子转运多肽-A细胞学定位,采用免疫组织化学法.结果 ①对照组妊娠各期及ICP组胎盘组织中均检出OATP-A mRNA表达,均未发现OATP-C mRNA表达.对照组早、中、晚孕期胎盘组织中,OATP-A mRNA相对量比较,差异无显著意义(P>0.05);ICP组胎盘组织中,OATP-A mRNA相对量高于对照组(40.72±31.46 vs.21.54±15.65),差异有显著意义(P<0.05).②有机阴离子转运多肽-A在对照组晚孕期和ICP组胎盘的表达部位,均为滋养细胞,而在血管内皮细胞无表达.结论 胆盐载体OATP-A mRNA在妊娠期肝内胆汁淤积症患者的胎盘组织表达增高,可能是机体对抗胆汁淤积的一种反应.

Placental Expression of Organic Anion Transporting Polypeptide -A and -C in Intrahepatic Cholestasis of Pregnancy

Objective To investigate placental expression of cholate transporter organic anion transporting polypeptide(OATP)-A and-C during normal pregnancy and patient with intrahepatic cholestasis of pregnancy(ICP).Methods From May 2006 to February 2007,placentas were collected from 20 pregnancy complicated with intrahepatic cholestasis(ICP group).Meanwhile,20 women termination pregnancy as well as plan centas from 8 1st trimester and 7 2nd trimester pregnancy were selected into control group(n=35).RT-PCR was applie...