来氟米特对子宫内膜异位症大鼠模型作用机制的研究

目的观察来氟米特用于子宫内膜异位症(endometriosis,EMT)大鼠模型的整个影响过程,检测模型异位灶中p-STAT和SOCS mRNA表达情况,探讨来氟米特对子宫内膜异位症的作用机制。方法采用自体移植法建立大鼠子宫内膜异位症模型,移植后第4周开腹建模成功的大鼠并随机分为空白对照组(每天0.15%羧甲基纤维素水1 ml/kg)、来氟米特高剂量组(每天35 mg/kg)、低剂量组(每天10 mg/kg)及阳性对照组(达那唑组每天25 mg/kg),连用3周,测量用药前后病灶体积,并采用Western blot和RT-PCR法分别检测异位子宫内膜灶中p-STAT蛋白和SOCS mRNA表达情况。结果来氟特高剂量组和达那唑组大鼠异位灶体积较空白对照组明显缩小(P<0.05),SD大鼠异位内膜p-STAT蛋白表达均低于对照组(P<0.05),而且SOCS-1 mRNA表达也均低于对照组(P<0.05)。结论来氟米特对对子宫内膜异位灶生长行为有抑制作用,而其发挥这种作用的机制可能是通过抑制子宫内膜移位灶JAK/STAT信号转导途径来实现的。     

磷酸化信号转导和转录激活因子3(Y705)在子宫腺肌症中的表达及其临床意义

目的通过检测磷酸化信号转导和转录激活因子3(p-STAT3)(Y705)和血管内皮生长因子(VEGF)在正常子宫内膜与子宫腺肌症在位内膜中的定位与表达,探讨p-STAT3(Y705)和VEGF在子宫腺肌症中发生发展中的作用。方法免疫组织化学SP法检测14例正常子宫内膜和14例子宫腺肌症在位内膜中p-STAT3(Y705)和VEGF的定位和表达情况;Real-time PCR检测正常子宫内膜与子宫腺肌症在位内膜组织中STAT3 mRNA表达情况;Western blotting检测正常子宫内膜与子宫腺肌症在位内膜组织中p-STAT3(Y705)、STAT3和VEGF蛋白的表达水平。结果 p-STAT3(Y705)主要在正常子宫内膜和子宫腺肌症在位内膜腺上皮细胞核中表达,子宫腺肌症在位内膜蛋白表达高于正常子宫内膜(P0.05),正常子宫内膜和子宫腺肌症在位内膜相应的增殖期和分泌期p-STAT3(Y705)的表达无显著性差异(P0.05)。正常子宫内膜和子宫腺肌症在位内膜中,STAT3在mRNA和蛋白表达水平差异均无显著性(P0.05)。VEGF主要表达在腺上皮细胞中,子宫腺肌症在位内膜蛋白表达高于正常子宫内膜(P0.05),正常子宫内膜和子宫腺肌症在位内膜相应的增殖期和分泌期VEGF的表达差异无显著性(P0.05)。结论 p-STAT3(Y705)促进血管生成对子宫腺肌症的发生发展有一定的作用。     

自噬基因LC3在子宫内膜异位症中的表达及其意义

目的探讨细胞自噬状态与子宫内膜异位症之间的关系及其意义。方法对子宫内膜异位症患者在位及异位内膜基质细胞(n=31)及正常子宫内膜基质细胞(n=31)行原代培养,进行免疫细胞化学鉴定;应用透射电镜观察组织中细胞自噬泡超微结构变化;采用RT-PCR、Western blot法检测LC3 mRNA和蛋白的表达。结果透射电镜结果显示:子宫内膜在位及异位内膜细胞的自噬泡数目较少。RT-PCR及Western blot法结果显示:子宫内膜异位症患者在位及异位内膜的LC3 mRNA及蛋白的表达水平明显低于正常子宫内膜(P0.05)。子宫内膜异位症患者在位与异位内膜的LC3 mRNA表达差异无统计学意义(P0.05),而异位内膜的LC3蛋白表达水平高于在位内膜(P0.05)。结论子宫内膜异位症患者的在位及异位内膜基质细胞的自噬活性降低,自噬可能参与子宫内膜异位症的发生。     

温补脾肾法对脾肾阳虚型UC大鼠JAK2/STAT3-SOCS6信号通路相关蛋白及基因表达的影响北大核心CSCD

目的:观察以温补脾肾法为指导的理中汤合四神丸对脾肾阳虚型溃疡性结肠炎(UC)大鼠模型病变结肠组织中JAK2、STAT3、p-STAT3、SOCS6蛋白及基因表达的影响。方法:采用病证结合造模方法复制脾肾阳虚型UC模型,成模大鼠随机分为模型组、柳氮磺砒啶组(SASP组)、理中汤合四神丸高、中、低剂量组,16只/组,同时设16只大鼠作为空白组。空白组与模型组给予蒸馏水灌胃,各治疗组给予对应的药物及剂量灌胃治疗,连续21 d。HE染色观察大鼠结肠黏膜组织病理变化;免疫组化法检测大鼠结肠黏膜组织中JAK2、STAT3、p-STAT3、SOCS6蛋白表达情况;RT-qPCR检测大鼠JAK2、STAT3、SOCS6mRNA表达情况;ELISA检测大鼠组织和血清中TGF-β1、ICAM-1含量。结果:与空白组相比,模型组大鼠结肠黏膜组织JAK2、STAT3、p-STAT3蛋白表达显著升高(P<0.01),JAK2、STAT3、p-STAT3蛋白着色深,表达呈强阳性,SOCS6蛋白表达显著降低(P<0.01),SOCS6蛋白着色浅,表达呈弱阳性。JAK2、STAT3 mRNA表达显著升高,SOCS6 mRNA表达显著降低(P<0.01),组织和血清中TGF-β1含量显著降低(P<0.01),ICAM-1含量显著升高(P<0.01);与模型组相比,中药高、中剂量组及SASP组JAK2、STAT3、p-STAT3蛋白表达显著降低(P<0.01),JAK2、STAT3、p-STAT3蛋白着色浅,表达呈弱阳性,SOCS6蛋白表达显著升高(P<0.01),SOCS6蛋白着色深,表达呈强阳性。JAK2、STAT3 mRNA表达显著降低(P<0.01),SOCS6 mRNA表达显著升高(P<0.01),组织和血清中TGF-β1含量显著升高(P<0.01),ICAM-1含量显著降低(P<0.01)。结论:以温补脾肾法为指导的理中汤合四神丸可能通过抑制JAK2/STAT3-SOCS6信号通路的激活,调节免疫系统平衡,修复受损结肠黏膜,达到治疗UC的目的。     

骨桥蛋白及其受体异常表达在子宫内膜异位症中的作用

目的探讨骨桥蛋白(OPN)及其受体整合素αvβ3在子宫内膜异位症发生、发展中的作用。方法随机选取经手术治疗的89例子宫内膜异位症患者的异位和在位内膜作为实验组,同期非内异症患者子宫内膜作为对照组,SP免疫组化法对上述病例的骨桥蛋白及其受体整合素αvβ3的表达水平进行检测;并对两者进行相关性分析。结果子宫内膜异位症患者的异位内膜中骨桥蛋白及其受体整合素αvβ3的表达高于其在位内膜的表达,子宫内膜异位症患者的在位内膜中骨桥蛋白及其受体整合素αvβ3的表达高于对照组子宫内膜中的表达;骨桥蛋白及其受体整合素αvβ3两者在子宫内膜异位症中的表达呈正相关。结论在子宫内膜异位症中存在着OPN、整合素αvβ3的高表达,两者可能协同在子宫内膜异位症的发生发展中起着重要作用。     

白介素-17和血管内皮生长因子在子宫内膜异位症中的作用

目的:探讨白介素-17(IL-17)和血管内皮生长因子(VEGF)在子宫内膜异位症血管生成中的作用。方法:采用免疫组织化学及免疫印迹方法检测50例异位症患者在位内膜、异位内膜及47例正常子宫内膜组织中IL-17及VEGF蛋白表达。结果:各组内膜组织腺上皮细胞及基质细胞中均有IL-17和VEGF蛋白表达,内膜异位症在位内膜及异位内膜均高于同期对照组内膜,差异均有统计学意义;对照组分泌期内膜IL-17和VEGF蛋白表达均高于增生期,呈周期性变化,而内膜异位症组分泌期与增生期IL-17和VEGF蛋白均呈高表达,失去周期性变化。结论:内膜异位症患者在位及异位内膜组织中IL-17及VEGF蛋白高表达可能与内膜异位症的发生发展有关。     

整合素β3在子宫内膜异位症与子宫内膜癌中的表达及生物学行为相关性研究

目的研究整合素β3（beta3 integrin）在子宫内膜异位症、子宫内膜癌中的表达,探讨其表达与子宫内膜异位症发生及子宫内膜异位症和子宫内膜癌生物学行为的相关性。方法采用免疫组织化学方法检测10例子宫内膜异位症在位内膜、异位内膜,10例子宫内膜癌,10例对照组正常子宫内膜整合素β3的表达。结果整合素β3在子宫内膜异位症在位内膜组的表达显著低于对照组（P〈0.05）,在异位内膜组中的表达显著高于在位内膜组及对照组（P〈0.05、P〈0.05）;整合素β3在子宫内膜癌组中的表达显著高于对照组（P〈0.05）;整合素β3在子宫内膜异位症异位内膜组中的表达与子宫内膜癌组中的表达差异无显著性（P〉0.05）。结论整合素β3的异常表达可能与子宫内膜异位症的发生有关;且可能与子宫内膜异位症具有和子宫内膜癌相似的生物学行为有关。     

骨桥蛋白及其受体异常表达在子宫内膜异位

目的 探讨骨桥蛋白(OPN)及其受体整合素αvβ3在子宫内膜异位症发生、发展中的作用.方法 随机选取经手术治疗的89例子宫内膜异位症患者的异位和在位内膜作为实验组,同期非内异症患者子宫内膜作为对照组,SP免疫组化法对上述病例的骨桥蛋白及其受体整合素αvβ3的表达水平进行检测;并对两者进行相关性分析.结果 子宫内膜异位症患者的异位内膜中骨桥蛋白及其受体整合素αvβ3的表达高于其在位内膜的表达,子宫内膜异位症患者的在位内膜中骨桥蛋白及其受体整合素αvβ3的表达高于对照组子宫内膜中的表达;骨桥蛋白及其受体整合素αvβ3两者在子宫内膜异位症中的表达呈正相关.结论 在子宫内膜异位症中存在着OPN、整合素αvβ3的高表达,两者可能协同在子宫内膜异位症的发生发展中起着重要作用.     

组蛋白去乙酰化酶1在子宫内膜异位症中的表达及意义

目的 研究组蛋白去乙酰化酶1(HDAC1)在子宫内膜异位症患者在位及异位内膜中的表达,探讨其在子宫内膜异位症发生、发展中的作用. 方法 应用免疫组织化学和免疫印迹法检测20例子宫内膜异位症患者在位内膜和异位内膜组织(研究组)中及20例子宫肌瘤患者的子宫内膜组织(对照组)HDAC1的表达情况. 结果 HDAC1阳性着色主要分布于子宫内膜上皮细胞和间质细胞的细胞核,在位内膜中HDAC1的表达强度明显高于对照组子宫内膜(P<0.01).免疫印迹检测提示,子宫内膜异位症在位内膜和异位内膜组织中HDAC1蛋白的相对表达量分别为2.67±0.69和2.55±1.36,显著高于对照组子宫内膜1.63±0.93(P<0.01,P<0.05);而在位内膜组与异位内膜组之间无统计学差异(P＞0.05). 结论 HDAC1在子宫内膜异位症在位和异位内膜组织中的高表达,可能在子宫内膜异位症的发生、发展中起重要作用.     

Expression of interleukin-8 receptors in endometriosis

BACKGROUND: Although the etiology of endometriosis is not well understood, chemokines and their receptors are believed to play a role in its pathogenesis. Therefore, we aimed to investigate the expression and localization of interleukin-8 (IL-8) receptors CXCR1 and CXCR2 in eutopic and ectopic endometrial tissues of women with endometriosis, and in endometrium of women without endometriosis. METHODS: Ectopic (n = 27) and homologous eutopic endometrium (n = 25) from women with endometriosis and endometrium from women without endometriosis (n = 27) were used for immunohistochemical analysis of CXCR1 and CXCR2. RESULTS: In normal endometrium, epithelial CXCR1 and CXCR2 immunostaining intensities were similar in the proliferative and secretory phase. Stromal CXCR1 expression was less then epithelial expression and did not show cyclical difference. No stromal CXCR2 expression was observed. In eutopic endometrium of women with endometriosis compared to endometrium of women without endometriosis, there was a significant increase in both proliferative and secretory phases for epithelial CXCR2 expression, and in proliferative phase for CXCR1 expression (P < 0.05). Both receptor immunoreactivities were significantly increased in the epithelial cells of ectopic endometrial tissues compared to that of normal endometrium (P < 0.05). CONCLUSIONS: These findings suggest that IL-8 and its receptors may be involved in the pathogenesis of endometriosis.     

GnRHⅡ蛋白在子宫内膜异位症患者中的表达及意义

目的：检测GnRHⅡ蛋白在子宫内膜异位症患者异位子宫内膜、在位子宫内膜和正常子宫内膜中的表达情况,同时分析其表达是否与子宫内膜月经周期有关。方法：采用免疫组织化学SP法检测GnRHⅡ蛋白在异位内膜、在位内膜及正常子宫内膜组织中的表达情况,并分析和比较其表达是否有差异。结果：GnRHⅡ蛋白在子宫内膜异位症患者异位、在位子宫内膜及正常子宫内膜中均有表达,阳性表达定位于子宫内膜腺体及间质细胞的细胞质;GnRHⅡ蛋白在异位内膜、在位内膜及对照组正常内膜的表达依次增强,两两比较差异有统计学意义（P＜0.05）;GnRHⅡ蛋白在正常子宫内膜分泌期表达强于增生期（P＜0.05）,且以分泌早中期最强,显著强于增生期和分泌晚期（P＜0.01）,而异位组或在位组的分泌期与增生期比较,差异无统计学意义（P＞0.05）。结论：GnRHⅡ蛋白在子宫内膜异位症的发病中以及在人类月经生理方面可能起重要作用。     

Nitric oxide synthesis is increased in the endometrial tissue of women with endometriosis

BACKGROUND: Previous studies have shown that peritoneal macrophages from women with endometriosis produce excess nitric oxide (NO). This study was designed to quantify the amount of NO and determine the expression of endothelial (eNOS) and inducible NO synthases (iNOS) in women with and without endometriosis. METHODS: An enzyme-linked immunosorbent assay (ELISA) was performed on endometrial tissues obtained from controls (myoma, n = 30) and on eutopic/ectopic endometrial tissues from endometriosis patients (n = 34) to evaluate eNOS and iNOS protein concentrations in these endometrial tissues. A rapid-response chemiluminescence analyser was used to measure NO directly in fresh endometrial tissues. RESULTS: Mean (+/- SEM) levels of NO were significantly increased in the endometrial tissues of women with endometriosis (13.2 +/- 7.8 versus 19.8 +/- 12.6 nmol/g tissue; P = 0.016). Apparently higher levels of NO were found in ectopic compared with eutopic endometrium (P = 0.057). Endometrial tissues of women with endometriosis appeared to contain more iNOS than those of controls (3.6 +/- 2.2 versus 8.6 +/- 12.2 pg/ microg protein; P = 0.06), but no significant difference was found in eNOS levels. CONCLUSIONS: Greater amounts of NO and NOS are present in the endometrial tissues of women with endometriosis, implying a possible role for NO in the pathogenesis of endometriosis.     

Urocortin 2 and urocortin 3 in endometriosis: evidence for a possible role in inflammatory response

Urocortin 2 (Ucn 2) and urocortin 3 (Ucn 3) are neuropeptides expressed by human endometrium. This study evaluated (i) the expression of Ucn 2 and Ucn 3 mRNA in endometriotic lesions and in endometrium of women with endometriosis; (ii) the effect of Ucn 2 and Ucn 3 on cytokines secretion from cultured endometrial stromal cells. Endometriotic tissue was collected from endometrioma (n=39); endometrial specimens were obtained from women with (n=39) and without (n=41) endometriosis throughout menstrual cycle. Tissue specimens were analysed for Ucn 2 and Ucn 3 mRNA expression and peptide localization; the effects of Ucn 2 or Ucn 3 on tumour necrosis factor (TNF-α) and interleukin (IL-4) secretion from cultured endometrial stromal cells was studied. Ucn 2 and Ucn 3 mRNA expression and localization were assessed by RT-PCR and by immuohistochemistry, respectively; cytokines secretion were measured by ELISA. Results showed that endometriotic tissue expressed both Ucn 2 and Ucn 3, with Ucn 3 expression higher in ectopic than in eutopic endometrium. Endometrial Ucn 2 mRNA expression in controls showed peak values at early proliferative phase, while in endometriotic patients low expression and no significant changes throughout menstrual cycle were observed. Endometrial Ucn 3 mRNA expression was highest in late secretory phase in controls, while in endometriotic patients low levels and no menstrual-cycle-related changes were found. When added to cultured endometrial cell cultures, Ucn 2 significantly increased TNF-α (P<0.01) and IL-4 (P<0.001), while Ucn 3 induced an increase of IL-4 secretion (P<0.01). In conclusion, endometriotic tissue expressed and localized Ucn 2 and Ucn 3; patients with endometriosis showed Ucn 2 and Ucn 3 mRNA expression in eutopic endometrium lower than in control group, with no endometrial cycle-related changes. Ucn 2 and Ucn 3-modulated TNF-α and IL-4 secretion from culture endometrial cells. These data suggest a possible involvement of Ucn 2 and Ucn 3 in the mechanisms of endometriosis.     

INTEGRINS ALPHA 3 AND ALPHA 6 ARE DIFFERENTIALLY EXPRESSED IN ENDOMETRIUM AND ENDOMETRIOSIS

The expression of integrin subunits has been investigated in the stroma and epithelium of eutopic and ectopic endometrial tissues, using immunohistochemistry and fluorescently activated cell-sorting techniques. Integrin subunits exhibited tissue-specific expression in both eutopic and ectopic endometrium. Integrin α 3 subunit was up-regulated in ectopic endometrium compared with the eutopic counterpart, whereas α 6 integrin subunit was down-regulated in the ectopic tissues. Cycle stage-dependent expression of α v and β3, observed in eutopic endometrium, was absent in the ectopic counterpart. It is concluded that the development and regeneration of the endometrium involve complex integrin–ligand interactions and that regulation of specific adhesive events is lost in endometriosis.