③The expression of gene of MMP2 in eutopic endometrium from women with and without endometriosis,was significantly relevant to the phase of the menstrual cycle(P<0.05),while that in ectopic endometrium was not(P>0.05).Conclusions ①Endometriotic tissues have capacity to express MMP2 and they are obviously over expressed than in normal endometrium,which make ectopic endometrial tissue have greater capacity to invade peritoneal and surrounding tissues and which may play an important role in the pathogenesis of endometriosis.②The expression of MMP2 in ectopic endometrium from endometriosis patient is higher than that in normal endometrium,and as endometriosis clinical stage increase,the expression of MMP2 did not strenghen,which play a vital role in the pathogenesis of endometriosis and lead to endometriosis progression.③The expression of MMP2 in ectopic endometrium of endometriosis lost menstrual cycle expression in normal endometrium,which may be one of failure reason of hormone thereby to endometriosis.
【Key words】 endometriosis,matris metalloproteinase2 eutopic endometrium,ectopic endometrium reverse,transcriptpolymerase chain reaction
子宫内膜异位症(endometriosis,EM,简称内异症)是指有功能的子宫内膜生长在子宫腔以外的部位。它在育龄妇女中的发病率极高,主要引起痛经和不孕,是干扰年轻妇女身心健康的重要原因之一。
本实验应用半定量逆转录聚合酶链反应技术(RTPCR),检测MMP2 mRNA在子宫内膜异位症异位内膜和在位内膜组织中的表达,探讨异位内膜侵袭腹膜并在腹腔内种植生长的机制,从而进一步阐明内异症发生发展的机制。
1 材料与方法
1.1 材料来源
1.1.1 子宫内膜异位症异位内膜组:50例异位症异位内膜组织标本均取自本院2003年10月—2005年10月因异位症而行腹腔或开腹手术的患者,年龄29~50岁,平均年龄(37.5±7.6)岁。其中增生期23例,分泌期27例。异位症分期按1985年美国生育协会修正分期标准(rAFS分期)[1]进行,Ⅰ~Ⅱ期25例,Ⅲ期17例,Ⅳ期8例。
1.1.2 子宫内膜异位症在位内膜组:22例在位内膜组织标本取自上述因异位症行子宫切除的患者,其中增生期10例,分泌期12例。
1.1.3 正常子宫内膜组:取自同期因子宫肌瘤行子宫切除术患者正常子宫内膜20例为对照组,年龄45~51岁,平均年龄(33.5±5.5) 岁。其中增生期9例,分泌期11例。
所有患者术前3个月内均未接受任何激素治疗,术后均经病理学诊断证实。月经周期的划分根据末次月经及病理学诊断结果确定。
1.2 方法
1.2.1 组织总RNA的提取:参照TRIzoI试剂盒(美国GIBCOBRL公司产品)说明书讲行。cDNA合成参照反转录试剂盒(美国PROMEGA公司产品)说明书进行。
1.2.2 MMP2基因的PCR引物参照文献[2]设计,内参照
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