剖宫产术后子宫瘢痕妊娠患者蜕膜组织中TGF-β1、 CTGF和VEGF表达的研究

Study on TGF-β1,CTGF and VEGF expression in decidual tissue of pregnant patients with uterine scar pregnancy after cesarean section

目的 通过检测剖宫产术后子宫瘢痕妊娠(CSP)的瘢痕蜕膜组织、宫腔蜕膜组织和剖宫产后正常妊娠的瘢痕蜕膜组织、宫腔蜕膜组织中的转化生长因子β1(TGF-β1)、血管内皮生长因子(VEGF)、结缔组织生长因子(CTGF)的表达,探索CSP的发病机制。方法 选取于贵州医科大学附属医院妇产科早孕行人工流产术后的CSP组蜕膜组织120例,同期行剖宫产的正常妊娠组蜕膜组织120例,用免疫组织化学法观察比较两组蜕膜组织中TGF-β1、CTGF和VEGF相对表达量。结果 CSP组剖宫产瘢痕蜕膜组织TGF-β1、CTGF相对表达量比CSP组宫腔蜕膜组织和正常妊娠组剖宫产瘢痕蜕膜组织更高,差异有统计学意义(P<0.05)。CSP组剖宫产瘢痕蜕膜组织VEGF相对表达量与CSP组宫腔蜕膜组织和正常妊娠组剖宫产瘢痕蜕膜组织比较,差异无统计学意义(P>0.05)。蜕膜组织TGF-β1与CTGF呈正相关(r=0.910,P<0.05),TGF-β1与VEGF无相关性(r=-0.032,P>0.05)。结论 TGF-β1、CTGF在CSP瘢痕部位蜕膜组织中的高表达可能是CSP发生的高危因素,采取措施抑制瘢痕部位TGF-β1、CTGF的产生,为预防CSP的发生开辟新的途径。

Objective To explore the pathogenesis of cesarean scar pregnancy(CSP)by detecting the expression of transforming growth factorβ1(TGF-β1),vascular endothelial growth factor(VEGF),and connective tissue growth factor(CTGF)the decidua tissue of cesarean scar and the decidual tissue of uterine cavity of CSP,and the decidua tissue of cesarean scar and the decidual tissue of uterine cavity of normal pregnancy after cesarean section.Methods Decidual tissues of totally 120 cases of CSP group and 120 cases of normal pregnancy group after induced abortion at the Department of Obstetrics and Gynecology in Guizhou Medical University Affiliated Hospital were collected.The expression of TGF-β1,CTGF,and TGF and VEGF in decidual tissue was detected using immunohistochemistry.Results The expression of TGF-β1 and CTGF in the decidual tissue of cesarean scar in the CSP group was higher than that in the decidual tissue of uterine cavity in the CSP group and the decidua tissue of cesarean scar in the normal pregnancy group,and the differences were statistically significant(P<0.05).The expression of VEGF the decidua tissue of cesarean scar in the CSP group was not significantly different from that in the decidual tissue of uterine cavity in the CSP group and the decidua tissue of cesarean scar in the normal pregnancy group(P>0.05).TGF-β1 in the decidual tissue was positively correlated with CTGF(r=0.910,P<0.05),and TGF-β1 and VEGF had no correlation(r=-0.032,P>0.05).Conclusion The high expression of TGF-β1 and CTGF in decidual tissue of cesarean scar of CSP may be a high risk factor for CSP,and measures should be taken to inhibit the production of TGF-β1 and CTGF in cesarean scar,so as to open up a new way to prevent the occurrence of CSP.