RhoC siRNA对宫颈癌SiHa细胞增殖和侵袭能力的影响

目的:探讨Ras相似物C(RashomologueC,RhoC)GTP酶对宫颈癌SiHa细胞增殖和转移的影响。方法:以人宫颈癌细胞株SiHa为研究对象,利用RhoC小干扰RNA对RhoC基因进行沉默,RT-PCR和WesternBlot检测转染前后RhoC的表达变化,MTT法比较细胞增殖能力的改变,流式细胞仪检测细胞凋亡率的改变。基质胶粘附实验比较细胞粘附率的变化,transwell体外侵袭实验比较细胞侵袭能力变化,体外迁移实验比较细胞运动能力的改变。结果:RhoCsiRNA明显下调RhoC基因的表达。RhoC表达下调后,SiHa细胞的增殖能力和凋亡率没有明显变化(P>0.05),SiHa细胞对基质胶的粘附率明显降低(P<0.01),SiHa细胞的体外侵袭能力明显降低(P<0.01),体外迁移能力显著降低(P<0.01)。结论:RhoC明显地促进了宫颈癌SiHa细胞株的体外粘附、侵袭和迁移,但对其增殖和凋亡没有显著作用。提示RhoC在宫颈癌的恶性进展中起重要作用。     

雌二醇屈螺酮片治疗绝经后妇女绝经相关症状的多中心临床研究

Objective To study the efficacy and safety of estradiol and drospirenone tablets (Angeliq)in treatment of menopausal symptoms among postmenopausal Chinese healthy women.Methods Total 244 postmenopausal Chinese healthy women who had moderate to severe hot flushes were randomly assigned for 16 weeks in this randomized multi-center double-blind placebo-controlled study.During the trial.the follow-up visits were conducted at week 4,8,12,16 of treatment and 2 weeks after treatment respectively.Height,weight,vital signs,hot flushes,other relevant menopausal symptoms and vaginal bleeding were observed in each follow-up visit,while the clinical global impression scale Was assessed at 16 weeks as well.Results It showed that hot flushes were reduced significantly more in observation group than that in placebo group ( P＜0.01 ), although both treatments were effective. The absolute values of mean severity index of total hot flushes decreased by - 0. 6± 0. 5 in observation group and - 0. 4 ± 0. 4 in placebo group from baseline respectively, which reached significant difference ( P ＜ 0. 05 ). However, the absolute values of mean severity index of moderate to severe hot flushes decreased by - 0. 6± 0. 8 in observation group and -0. 3± 0.6 in placebo group from baseline respectively, which had no significant difference (P ＞ 0. 05 ).After 16 weeks treatment, it also showed that estradiol and drospirenone had significant better efficacy than placebo on moderate to severe sweating, vaginal dryness and clinical global impression scale (P ＜0. 01 ).During the trial, blood pressure in observation group was stable. The rate of vaginal bleeding in observation group was higher than that in the placebo group, especially during the week 4 to week 8 when 48. 9% (87/178) in observation group and 10. 7% (6/56) in placebo group of patients bled. Although the cumulative amenorrhea rate of observation group was lower than that of placebo group in each cycle (28 days), it increased gradually along with duration of the treatment. The commonest adverse event in observation group was breast tenderness which accounted for 12.0% (22/183 ). The level of serum potassium was in the normal range in observation group mostly. Meanwhile, the other adverse events rate was low. Serious adverse events reported in this trial were assessed as not study drug related or as unlikely study drug related. Conclusion Estradiol and drospirenone tablets which could effectively alleviate menopausal symptoms in postmeuopausal Chinese healthy women is a novel hormone replacement therapy regimen with high safety and efficacy.     

潜伏活性的人可溶性TNFⅠ型受体融合蛋白真核表达载体的构建及表达

目的:采用基因工程技术,将转化生长因子β前体相关蛋白(LAP)通过基质金属蛋白酶(MMP)水解部位与人可溶性TNFⅠ型受体(hsTNFRⅠ)连接,构建pcDNA3.1/LAP-MMP-hsTNFRⅠ融合蛋白真核表达载体,获得LAP-MMP-hsTNFRⅠ融合蛋白。方法:将编码MMP水解部位氨基酸的正反义DNA序列退火形成互补双链后定向克隆插入真核表达载体pcDNA3.1( ),得到pcDNA3.1/MMP重组体;将TGF-β1的LAP段和hsTNFRⅠ与MMP水解部位连接,获得pcDNA3.1/LAP-MMP-hsTNFRⅠ真核表达载体。测序鉴定后,脂质体介导重组质粒转染COS-7细胞,通过RT-PCR检测融合基因的表达。结果:酶切及测序结果证实pcDNA3.1/LAP-MMP-hsTNFRⅠ重组载体构建成功,转染后RT-PCR结果表明重组质粒在COS-7细胞中得到有效表达。结论:成功构建了融合蛋白真核表达载体pcDNA3.1/LAP-MMP-hsTNFRⅠ,并获得融合基因的瞬时表达,为进一步研究融合蛋白在子宫内膜异位症中的靶向治疗奠定了实验基础。     

如何早期发现宫颈癌?

宫颈癌是发展中国家中最为常见的恶性肿瘤,全球每年新发病例近50万例,其中中国发病约1 3万例,占全球发病的28.8%。据美国癌症学会(American Cancer Society,ACS)报道,2008年全美国报道官颈浸润癌11070例,宫颈原位癌(carcinoma in situ,CIS)病例数约为浸润癌病例数的4倍。如宫颈癌病例能获得早期诊断,其5年生存率可达近100%,局部浸润病例5年生存率降至92%。宫颈癌总体5年生存率仅73%。中国宫颈癌病例总体5年生存率70.93%,较美国稍低。由这些数据可见,宫颈癌病变发展一旦超出官颈范围其预后急剧恶化。所以,宫颈癌是一种可以完全治愈的恶性肿瘤,治愈的关键在于早期诊断。     

Study on Tumor Angiogenesis in Epithelial Ovarian Carcinoma

The tumor angiogenesis has been recognized asthe neovascularization induced by tumor cells, and finally the formation of capillary network to supply thetumor mass. Recently, it has been shown that thetumor angiogenesis played a key role in the occurrence, development, metastasis and prognosis of tumor. Several studies about epithelial ovarian tumorangiogenesis have been reported abroad, but their results are in controversy['J.' The purpose of this studywas to investigate tumor angiogenesis in …     

雌二醇屈螺酮片治疗绝经后妇女绝经相关症状的多中心临床研究

Objective To study the efficacy and safety of estradiol and drospirenone tablets (Angeliq)in treatment of menopausal symptoms among postmenopausal Chinese healthy women.Methods Total 244 postmenopausal Chinese healthy women who had moderate to severe hot flushes were randomly assigned for 16 weeks in this randomized multi-center double-blind placebo-controlled study.During the trial.the follow-up visits were conducted at week 4,8,12,16 of treatment and 2 weeks after treatment respectively.Height,weight,vital signs,hot flushes,other relevant menopausal symptoms and vaginal bleeding were observed in each follow-up visit,while the clinical global impression scale Was assessed at 16 weeks as well.Results It showed that hot flushes were reduced significantly more in observation group than that in placebo group ( P＜0.01 ), although both treatments were effective. The absolute values of mean severity index of total hot flushes decreased by - 0. 6± 0. 5 in observation group and - 0. 4 ± 0. 4 in placebo group from baseline respectively, which reached significant difference ( P ＜ 0. 05 ). However, the absolute values of mean severity index of moderate to severe hot flushes decreased by - 0. 6± 0. 8 in observation group and -0. 3± 0.6 in placebo group from baseline respectively, which had no significant difference (P ＞ 0. 05 ).After 16 weeks treatment, it also showed that estradiol and drospirenone had significant better efficacy than placebo on moderate to severe sweating, vaginal dryness and clinical global impression scale (P ＜0. 01 ).During the trial, blood pressure in observation group was stable. The rate of vaginal bleeding in observation group was higher than that in the placebo group, especially during the week 4 to week 8 when 48. 9% (87/178) in observation group and 10. 7% (6/56) in placebo group of patients bled. Although the cumulative amenorrhea rate of observation group was lower than that of placebo group in each cycle (28 days), it increased gradually along with duration of the treatment. The commonest adverse event in observation group was breast tenderness which accounted for 12.0% (22/183 ). The level of serum potassium was in the normal range in observation group mostly. Meanwhile, the other adverse events rate was low. Serious adverse events reported in this trial were assessed as not study drug related or as unlikely study drug related. Conclusion Estradiol and drospirenone tablets which could effectively alleviate menopausal symptoms in postmeuopausal Chinese healthy women is a novel hormone replacement therapy regimen with high safety and efficacy.     

子宫颈癌中叉头框C2蛋白的表达及其意义

宫颈癌是女性常见的恶性肿瘤,其发病率及病死率在我国呈上升趋势.宫颈癌转移是一个复杂的、连续的、多阶段的过程.肿瘤血管生成理论认为,肿瘤的生长、转移依赖于血管生成,而以直接蔓延为主要转移途径的宫颈癌,其发展和转移更有赖于新生血管的形成.     

巨块型宫颈癌ⅠB2～ⅡB期68例术前全身新辅助化疗的近期疗效观察

目的 探讨术前新辅助化疗对巨块型宫颈癌的近期疗效.方法 选择2001年12月至2004年12月华中科技大学同济医学院附属协和医院初治的经病理确诊的68例ⅠB2～ⅡB期巨块型宫颈癌,采用PVB方案化疗2个疗程后手术,观察近期的疗效.结果 临床近期有效率达75%,手术切除率达100%.术前新辅助化疗可提高手术切除率和症状改善率,化疗后肿瘤直径较化疗前有不同程度的缩小,差异有显著意义（P＜0.05）.所有手术患者均能顺利切除病灶并达到切缘距离病灶1cm以上.结论 术前新辅助化疗可提高宫颈癌的近期疗效,成为治疗该病的一种新手段,具有重要的临床意义.     

短发夹状RNA抑制MDR1基因表达逆转卵巢上皮性癌多药耐药的研究

多药耐药性的产生是导致肿瘤化疗失败的重要原因。多药耐药基因MDR1及其所编码的细胞膜P糖蛋白（P-gp）表达增加介导的耐药在化疗中最为主要、最为常见。在过去20多年中，学者们探求各种逆转多药耐药的方法，如反义寡核苷酸技术、核酶技术等，取得了一定的成果。RNA干扰（RNAi）技术抑制MDR1基因表达是研究逆转多药耐药的新途径。本研究设计并构建针对人MDR1基因特定位置的短发夹状RNA（shRNA）质粒pEGFP-H1／MDR1，观察其对卵巢上皮性癌（卵巢癌）紫杉醇耐药细胞株MDR1基因和P-gP表达的抑制作用，探索耐药肿瘤基因治疗的有效方法。     

Aurora B在子宫内膜和子宫内膜癌组织中的表达及其意义

目的:探讨Aurora B在正常子宫内膜和子宫内膜癌组织中的表达及其与子宫内膜癌临床病理参数之间的关系。方法:采用免疫组织化学链霉素抗生物素蛋白-过氧化物酶(streptavidin-biotin peroxidase,SP)法对10例正常增殖期子宫内膜组织、10例正常分泌期子宫内膜组织和72例子宫内膜癌组织Aurora B的表达情况进行了检测,分析其在正常子宫内膜组织中的表达规律及其与子宫内膜癌临床病理特征的关系。结果:Aurora B表达的阳性指数在正常增殖期子宫内膜组织中明显高于分泌期子宫内膜组织,差异有极显著性意义(P<0.01);增殖期的表达也高于子宫内膜癌组织的表达,差异有极显著性意义(P<0.01);Aurora B表达阳性指数在高分化、低手术分期和肌层浸润深度≤1/2的子宫内膜癌组织中低于中、低分化、高手术分期和子宫肌层浸润深度>1/2的子宫内膜癌组织,差异有显著性意义(P<0.01、P<0.01、P<0.05,respectively)。结论:Aurora B参与正常增殖期子宫内膜腺体上皮细胞的增生和复制;Aurora B在子宫内膜癌组织中的表达与其生物学行为有关,Aurora B的表达升高提示子宫内膜癌的恶性生物学行为增加。