妊娠期肝内胆汁瘀积症53例临床分析

妊娠期肝内胆汁瘀积症(ICP)为妊娠特有的疾病，愈后良好。ICP易致早产、死胎、死产、宫内窘迫及产后出血，对于本病的防治有利于减少围产儿死亡。本文对53例ICP作一初步临床分析。     

磁感应加热和HSV—tk自杀基因及核素内照射联合治疗乳腺癌的实验研究

目的 观察纳米磁粒磁感应加热、单纯疱疹病毒-胸苷激酶（HSV-tk）基因及核素内照射联合治疗MCF-7乳腺癌的作用,探讨联合治疗的有效性与可行性.方法 制备转染试剂脂质体（Lipofectamine）/含热休克蛋白启动子的HSV-tk基因表达质粒（pHSP-HSV-tk）、四氧化三铁纳米磁流液、188Re-丙氧鸟苷白蛋白纳米微球（GCV-BSA-NP）;进行四氧化三铁纳米磁流液的体内加热实验;建立MCF-7乳腺癌模型,并用单纯随机抽样法将60只荷瘤鼠分成6组,每组10只.A组为空白对照组,B组为单纯基因转染治疗组,C组为单纯热疗组,D组为基因转染联合核素内照射治疗组,E组为基因转染联合热疗组,F组为基因、热疗、核素内照射联合治疗组.各组经不同方法处理后,观察肿瘤生长情况,测肿瘤质量,观察肿瘤组织病理变化;RT-PCR法检测B、D、E、F组HSV-tk基因表达（与内参β-actin mRNA吸光度比值）情况.各组与对照组比较采用泊松分布及单因素方差分析,所用统计软件为SPSS 10.0.结果 在动物体内加热实验中,交变磁场（AMF）作用下,不同注射剂量磁粒都引起肿瘤组织温度快速升高,2,4和6 mg磁粒分别使肿瘤温度升至39.6 ℃,43.2 ℃和48.1 ℃,且持续40 min.当AMF作用停止后,肿瘤组织温度10 min内分别降至36.8 ℃,37.5 ℃和37.8 ℃.成功建立MCF-7乳腺癌模型,治疗结果显示：C、D、E、F组肿瘤质量[（452.50±30.29）、（240.98±35.32）、（231.87±27.41）、（141.55±23.78）mg]较A组[（719.12±22.65）mg]差异有统计学意义（F=800.007,P＜0.01）,且以F组疗效最好;C组与E组肿瘤质量大于F组,差异有统计学意义（t=25.533,7.872,P均＜0.05）;D组较B组肿瘤质量明显减小,且差异有统计学意义（t=32.805,P＜0.05）.RT-PCR半定量分析显示：B、D组的表达量（0.33±1.30,0.46±0.12）与E、F组（0.66±0.13,0.74±0.11）相比差异有统计学意义（F=21.573,P＜0.05）.结论 热疗、基因治疗联合核素治疗能有效抑制MCF-7乳腺癌的生长,对乳腺癌治疗有潜在的应用前景.     

母体哺乳期氰戊菊酯染毒对子代青春期雌鼠行为发育的影响

目的 研究母体哺乳期染毒氰戊菊酯对子代青春期雌鼠感觉运动行为和生活习性的影响.方法 将12只雌小鼠随机分成对照组、7.5和30.0 mg/kg氰戊菊酯染毒组(每组4只母鼠,每窝10只仔鼠,每组20只雌性仔鼠).于仔鼠出生后第1～21天(PND1～PND21)每天给予染毒组母鼠氰戊菊酯(7.5和30.0 mg/kg)灌胃染毒1次,对照组母鼠给予等容积玉米油.观察出生后第35天(PND 35 d)子代青春期雌鼠感觉运动行为和生活习性的变化.结果 与对照组[周边时间:(203.4±53.0)s和站立次数:(30.9±17.3)次]相比,30.0 mg/kg染毒组子代雌鼠[周边时间:(263.4±54.8)s和站立次数:(47.3±16.2)次]明显增加,差异均有统计学意义(P＜0.05).7.5 mg/kg染毒组子代雌鼠抓绳分值[(56.50±50.79)分]和30.0mg/kg染毒组子代雌鼠抓绳分值[(54.73±53.91)分]明显低于对照组[(114.53±53.87)分],差异均有统计学意义(F=4.141,P＜0.05).不同组别子代雌鼠平衡木分值、挖掘量、囤积量、筑巢分值比较,差异均无统计学意义(P＞0.05).结论 母体哺乳期染毒氰戊菊酯可导致子代青春期雌鼠探索和运动协调能力降低及焦虑行为增加,对生活习性无明显影响.     

胎盘生长因子在妊娠期高血压疾病中的表达及意义

目的:在妊娠的不同时期检测胎盘生长因子(PLGF)含量的变化,以及妊娠期高血压疾病(HDCP)患者和对照组PLGF的表达变化,以探讨PLGF是否可作为预测HDCP的血清标志物。方法:运用电化学发光法测定不同患者血清PL-GF的表达量。结果:在对照组中随着孕周的增加,PLGF含量上升,34周后下降;而且在HDCP患者组血清PLGF表达水平明显比对照组降低(P<0.05)。结论:血清PLGF的下降可能可以作为HDCP患者的一项有效的临床指标。     

妊娠期糖尿病胎儿肺成熟度的临床分析

妊娠期糖尿病是指妊娠期间首次发生或发现的糖尿病，其对母婴危害很大，终止妊娠时如胎儿肺不成熟，新生儿可能出现呼吸窘迫综合征，故应在终止妊娠前检测胎肺成熟度。本文就本院开展的19例妊娠期糖尿病行羊水板层小体检测与羊水泡沫试验测定，分析报道如下。     

胎盘组织中胆酸调节蛋白的表达及其与妊娠期肝内胆汁淤积症发病的关系

妊娠期肝内胆汁淤积症(ICP)是一种特发于妊娠期的胆汁淤积,多发生在妊娠中晚期.临床上主要以皮肤瘙痒、黄疸、血清胆汁酸水平升高,肝酶轻度或重度升高,产后症状迅速消失为其特征[1].可引起胎儿窘迫、早产、死胎、死产,增加围产儿发病率和死亡率[2].     

早发型子痫前期病因及其预测的研究进展

早发型子痫前期的发病机制可能与易感基因及其多态性、胎盘源性细胞因子、免疫耐受异常等有关。早发型子痫前期的预测可从病史、外周血检测相关因子和彩色多普勒超声检查等多条途径进行。笔者拟就早发型子痫前期的病因及预测研究进展,进行综述如下。     

宫颈黏膜细胞线粒体DNA核内整合及其与c-myc基因表达的关系

目的：探讨宫颈黏膜细胞核内线粒体DNA（mtDNA）整合与c—myc基因表达的关系。方法：采用免疫组（IHC）检测c—myc基因表达：采用原位杂交方法对宫颈黏膜细胞核内mtDNA序列进行检测：结果：宫颈癌黏膜细胞核内mtDNA序列的检出率为27．5％，不典型增生为13．3％、正常宫颈黏膜细胞未发现有,mtDNA序列整合 宫颈黏膜细胞c-myc基因表达率在mtDNA序列检出组为67％，显著高于mtDNA序列列未检出组（36％）。结论：宫颈黏膜细胞mtDNA序列核内整合可能参与了宫颈癌的发生：c-myc基因表达可能与宫颈黏膜mtDNA序列整合有关。     

磁感应加热和HSV-tk自杀基因及核素内照射联合治疗乳腺癌的实验研究

Objective To investigate the antitumor therapeutic effect of combined therapy of magnetic induction heating by nano-magnetic particles, herpes simplex virus thymidine kinase gene(HSV-tk suicide gene) and internal radiation in mice bearing MCF-7 breast carcinoma. Methods The transfection reagents, plasmids heat shock protein-HSV-tk (pHSP-HSV-tk), ferroso-ferric oxide nano-magnetic fluid flow and 188Re-ganciclovir-bovine serum albumin-nanopaticles (GCV-BSA-NP) were prepared. The heating experiments in vivo were carried out using ferroso-ferric oxide nano-magnetic fluid flow. Sixty mice tumor models bearing MCF-7 breast carcinoma were established and randomly divided into six groups. Group A was the control group, B was gene transfection therapy group, C was hyperthermia group, D was gene transfection therapy combined with radionuclide brachytherapy group, E was gene therapy combined with hyperthermia group, and F was gene therapy, hyperthermia combined with radionuclide brachytherapy group. The tumor growth, tumor mass and histopathological changes were evaluated. The expression of HSV-tk in the groups of B, D, E and F was detected by RT-PCR. Poisson distribution and one-way analysis of variance (ANOVA) were used for statistical analysis by SPSS 10.0 software. Results In the animal heating experiments, the temperature of tumor increased up to 39.6 ℃, 43.2 ℃, and 48.1 ℃ quickly with different injected doses (2, 4 and 6 mg respectively) of nano-magnetic particles and maintained for 40 min. The temperature of tumor tissue reduced to 36.8 ℃, 37.5 ℃ and 37.8 ℃ in 10 min when alternating magnetic field (AMF) stopped. The tumor mass in Groups C ((452.50 ±30.29) mg), D ((240.98 ±35.32)mg), E((231.87 ±27.41) mg) and F ((141.55 ±23.78) mg) were much lower than that in Group A ((719.12±22.65) mg) (F=800.07, P＜0. 01), with the most significant treatment effect in Group F.The tumor mass in Group B((684.05 ±24.02) mg) was higher than that in Group D (t =32. 805, P ＜0. 05). Semi-quantitative RT-PCR analysis showed that the expression of HSV-tk in Groups B and D (0.33 ±0. 13 and 0. 46 ±0.12) was significantly different from that in Groups E and F (0.66 ±0.13 and 0.74 ±0. 11)(F = 21. 573, P ＜ 0.05). Conclusion Combined use of hyperthermia, gene therapy and radionuclide brachytherapy could effectively depress the growth of MCF-7 breast carcinoma, thus possessing treatment potential for this tumor.