The Influences of Mifepristone, Norethisterone and Tamoxifen on the Glycosph

By using the Ladisch partitioning and microscale-analysis of HPTLC,the comparative quantitative and qualitative studies of gangliosides (Gg)and neutral glycosphingolipids(N-GSL)compositions from human chorionic villi tissues of normal early pregnant women and women treated with mifepristone, norethisterone(NET)and tamoxifen(TAM)were reported in this paper.The patterns of Gg and N-GSL in three treated groups were similar to those in normal pregnant group.The total values of Gg from the chorionic villi tissues reduced significantly in three treated groups(P<0.01).In all treated groups,the amounts of NeuNAC-Gal-Glc-cer(GM3),NeuNAC-NeuNAC-Gal-Glc-cer(GD3)and Gal-GalNAC-(NeuNAC)-Gal-Glc-cer(GM1)were decreased significantly compared with those in normal(P<0.01orP<0.05).In NET and TAM groups,Neu NAC-Gal-GalNAC-(NeuNAC-NeuNAC)-Gal-Glc-cer(GT1b) was markedly lower than that in normal(P<0.01).The total values of N-GSL extracted from the chorionic villi tissues were obviously higher in mifepristone and TAM groups than those in normal(P<0.01).The Gal-Glc-cer(LacCer)(CDH)and Gal-Gal-Glc-cer(Gal-LacCer)(CTH)were greatly increased in mifepristone group as compared with normal P<0.05).Paragloboside:Gal-GalNAC-Gal-Glc-cer(PG)in NETgroup was significantly higher than that in normal(P<0.01).

米非司酮、炔诺酮、三苯氧胺对人早孕绒毛鞘糖脂的影响

应用Ｌａｄｉｓｃｈ分离及微量分析方法，对服米非司酮、炔诺酮、三苯氧胺及正常妊娠妇女的绒毛神经节苷脂（Ｇｇ）和中性鞘糖脂（Ｎ－ＧＳＬ）进行定量分析。结果证明，正常及各服药组Ｇｇ和Ｎ－ＧＳＬ组成相同；各服药组Ｇｇ总量比正常组明显减少（Ｐ＜０．０１）。各服药组绒毛ＧＭ３、ＧＭＩ与ＧＤ３、炔诺酮及三苯氧胺组ＧＴｌｂｔｂ正常组均减少（ＰＭＯ．０１和Ｐ＜０．０５）。米非司酮及三苯氧胺组的Ｎ—ＧＳＬ总量均比正常组升高，其中米非司出组织毛ＣＤＨ、ＣＴＨ增加（Ｐ＜０．０５）；而炔诺酮组则ＰＧ升高明显（Ｐ＜０．Ｏ１）。

三苯氧胺联合米非司酮药物流产对早孕绒毛VEGF、TGF-β_1表达的影响

目的:探讨三苯氧胺联合米非司酮药物流产缩短流产后出血时间的可能机制。方法:将非意愿妊娠49d内要求药物流产的宫内早孕妇女50例随机分成,米非司酮+三苯氧胺组(A组):给予三苯氧胺120mg联合米非司酮150mg配伍米索前列醇600μg;米非司酮组(B组):将三苯氧胺换成安慰剂余同A组。应用免疫组化Envision法检测内自然排出绒毛组织中血管内皮生长因子(VEGF)、转化生长因子(TGF-β1)的表达,用Image-Pro Plus4.5图像分析软件测定VEGF、TGF-β1蛋白表达积分光密度值,并以21例负压吸宫流产绒毛组织为对照组(C组)。结果:VEGF蛋白在全部合体滋养细胞、细胞滋养细胞和血管内皮细胞表达,间质细胞大部分表达;TGF-β1蛋白在大部分合体滋养细胞和细胞滋养细胞表达,间质细胞和血管内皮细胞少量表达。A、B、C组绒毛VEGF、TGF-β1蛋白表达积分光密度值依次升高,VEGFIOD值分别为:33452.49±10666.87、42436.74±12979.98和53954.56±15946.22,TGF-β1IOD值分别为:29823.02±12357.60、40880.01±18022.13和59915.28±19219.37,两两比较,其差异有统计学意义,P值均<0.05。结论:米非司酮抑制VEGF、TGF-β1在绒毛组织的表达可能是其抗早孕机理之一,而三苯氧胺可进一步加强米非司酮的这一作用,这可能是其缩短米非司酮药物流产后出血时间的机制之一。