VEGF?CD44v6?MMP-2在食管癌中的表达及与淋巴结转移的关系

目的:探讨血管内皮生长因子(VEGF)、CD44拼接异构体(CD44v6)和基质金属蛋白酶(MMP-2)在食管癌中的表达,分析其与淋巴结转移的关系.方法:应用免疫组织化学方法检测VEGF、CD44v6、MMP-2在40例食管正常鳞状上皮和80例食管鳞癌组织中的表达.结果:80例食管癌标本中VEGF、CD44v6、MMP-2阳性表达率分别为76.3%、71.3%、66.3%,40例食管正常鳞状上皮VEGF、CD44v6、MMP-2阳性表达率分别20.0%、12.5%、7.5%,二者相比差异均有显著性(P＜0.05).VEGF、CD44v6、MMP-2在食管癌中的表达与肿瘤的淋巴结转移相关.44例有淋巴结转移的食管癌组织中VEGF、CD44v6、MMP-2表达阳性率分别为95.1%、84.1%、80.0%,36例无淋巴结转移者为61.1%、55.6%、50.0%.结论:VEGF、CD44v6、MMP-2在食管癌组织中呈高表达,其表达值与肿瘤的有无淋巴结转移有关,可作为食管癌浸润、转移的重要指标.     

不同黄体支持方法对体外受精-胚胎移植结果的影响

目的:探讨三种黄体支持方法对体外受精-胚胎移植(IVF-ET)结果的影响。方法:回顾性分析195个IVF-ET周期的结果,根据注射hCG当天的血E2水平、B超示直径≥14 mm卵泡数目及所用的黄体支持方法分组。A组:112例,E2<2 000 pg/mL,直径≥14 mm的卵泡数<10个,hCG进行黄体支持;对E2≥2 000 pg/mL,卵泡数目≥10个者,随机分为两组,B组,46例,单用黄体酮进行黄体支持;C组,37例,黄体酮加雌激素进行黄体支持。结果: 三组间妊娠率、种植率、流产率、OHSS发生率差异均无显著性,P>0.05。结论:hCG用于IVF黄体支持并不优于黄体酮,但在一定程度上可避免某些患者由于注射黄体酮产生的痛苦。黄体酮+雌激素进行黄体支持应该是黄体支持较合理的方案,还需进一步研究。     

川芎嗪对哮喘大鼠肺组织c-fos表达的影响

目的：探讨川芎嗪对哮喘大鼠肺组织中C-fos表达的影响。方法：将健康成年大鼠随机分为对照组、哮喘组、药物组3组，每组6只。制作卵蛋白致敏大鼠哮喘模型。采用免疫组化法观察3组大鼠肺组织中C-fos的蛋白表达，采用逆转录-聚合酶联反应技术测定3组大鼠肺组织中C-fosmRNA的表达。结果：哮喘组C-fos在肺组织中的蛋白表达明显高于对照组（P〈0．01），应用药物川芎嗪干预后，川芎嗪组C-fos蛋白表达明显低于哮喘组（P〈0．01）。哮喘组C-fos在肺组织的mRNA表达也高于对照组（P〈0．01），应用川芎嗪药物干预后，哮喘组C-fos在肺组织的mRNA表达明显低于哮喘组（P〈0．01）。结论：川芎嗪可减少哮喘肺组织C-fos的表达从而在哮喘中发挥其抗炎和抗气道重塑的作用。     

中药复方对戊四氮致痫大鼠海马mGLuR1表达的影响

目的：观察戊四氮（PTZ）致痫大鼠海马神经元代谢型谷氨酸受体（mGluR1）表达以及中药复方AAP的脑保护作用。方法：动物随机分为6组,复制戊四氮致痫大鼠模型;于致痫后12h、2d、5d、7d相应时间点取材,制备脑标本;免疫组化技术检测大鼠海马神经元mGluR1表达。结果：与正常组比较,模型组mGluR1免疫反应阳性表达增加,差异显著（P〈0.05）;与模型组及丙戊酸钠组比较,中药复方AAPl、AAPm、AAPs组海马CA3区mGluR1阳性表达水平降低,差异显著（P〈0.05）。结论：戊四氮致痫大鼠海马mGluR1表达增加,mGluR1可能在PTZ致大鼠癫痫发作中起作用;中药复方AAP可降低mGluR1表达,对癫痫大鼠有脑保护作用。     

根据卵泡输出率评估IVF中卵巢的反应性及结局

目的:研究在体外受精-胚胎移植(IVF-ET)中,卵泡输出率(follicular output rate,FORT)对卵巢反应性的评估能力及对妊娠结局的预测能力?方法:共研究3 292例控制性超排卵患者,每位患者均以外源性重组卵泡刺激素(recombinant follicle stimulating hormone,rFSH) 225 iu启动?根据FORT值将其分为低?中?高3组?回顾性研究了3组间控制性超排卵数据及实验室指标?结果:窦卵泡数(antral follicle count,AFC)在高FORT组最低,在低FORT组最高?排卵前卵泡数(preovulatory follicle count,PFC)及注射人体绒毛膜促性腺激素(human chorionic gonadotrophin,HCG)日当天雌二醇 (estradiol,E2)在高FORT组中最高,在低FORT组中最低?获卵数?总胚胎数?优质胚胎数在低?中?高3组间逐步升高,差异有统计学意义?而胚胎种植率及临床妊娠率在3组间亦有统计学差异,在高FORT组中最高?结论:FORT是研究卵巢反应性的有力工具,高FORT组将具有更好的妊娠结局?     

人类肥胖相关新基因LYRM1真核表达载体的构建及稳定转染3T3-L1细胞系的建立

目的:构建人LYRM1基因的真核表达载体,转染3T3-L1前体脂肪细胞,建立稳定过表达人LYRM1基因的3T3-L1前体脂肪细胞系.方法:运用RT-PCR技术从人网膜脂肪组织中分离LYRM1基因的完整编码框,将其亚克隆到真核表达载体pcDNATM3.1/myc-His B,脂质体转染3T3-L1前体脂肪细胞,通过G418筛选,建立稳定转染的3T3-L1前体脂肪细胞系,并利用Western blot方法鉴定其表达.结果:PCR、酶切鉴定及测序结果表明重组质粒构建正确.建立了稳定转染LYRM1的3T3-L1前体脂肪细胞,成功地表达目的基因.结论:LYRM1真核表达载体的成功构建及稳定转染3T3-L1细胞系的建立为进一步研究其功能奠定了良好的实验基础.     

miR-181a促进人子宫内膜间质细胞蜕膜化催乳素的表达

目的目前虽已发现一些在胚胎着床过程中起重要作用的分子,但微小RNA(microRNA,miRNA)在蜕膜化过程中作用的研究报道较少,文中调查孕鼠围着床期子宫组织中miR-181a的表达规律,并探讨miR-181a对人子宫内膜间质细胞(human endometrial stromal cell,hESC)体外诱导蜕膜化过程中蜕膜化标志基因蜕膜化催乳素(decidual prolactin,dPRL)表达的调控作用。方法收集怀孕0～6.5 d孕鼠子宫组织,采用TRIZOL法提取总RNA,通过实时定量PCR检测子宫组织中miR-181a的表达。制备Ad-miR-181a重组腺病毒,并感染hESC,24 h后采用0.5 mmol/L 8-Br-cAMP和1μmol/L Medroxyproges-terone(MPA)联合进行体外蜕膜化诱导培养;通过化学发光免疫法和实时定量PCR分别检测细胞培养液上清中dPRL的浓度与间质细胞中催乳素(prolactin,PRL)mRNA的表达;同时采用荧光素酶报告基因检测miR-181a对hESC中dPRL(-332/+65)启动子的调控作用。结果早孕小鼠子宫组织中miR-181a的表达高于非妊娠小鼠子宫,且随着妊娠天数的增加呈逐渐上升的趋势,在小鼠着床"窗口期"即孕4.5 d达到高峰(2.60±0.15倍,P<0.01,n=5),孕5.5 d子宫miR-181a的表达开始平稳下降;成功获得滴度为5.19×1010ifu/ml的miR-181a腺病毒,该腺病毒介导的miR-181a过表达显著增加hESC蜕膜化标志基因dPRL mRNA表达水平,增高超过8倍(P<0.01);在8-Br-cAMP和MPA联合诱导hESC体外蜕膜化时,高表达miR-181a可明显增加8-Br-cAMP联合MPA诱导的PRL mRNA表达水平与PRL蛋白分泌(P<0.01)。荧光素酶报告基因进一步证实miR-181a可以激活dPRL(-332/+65)启动子的活性达到2倍(P<0.05)。结论 miR-181a参与8-Br-cAMP和MPA诱导子宫内膜间质细胞蜕膜化过程中PRL的表达调控。     

Assessment of the clinical effect of Chinese medicine therapy combined with psychological intervention for treatment of patients of peri-menopausal syndrome complicated with hyperlipidemia

<正>Objective:To observe the effect of Chinese medicine therapy combined with psychological intervention(combined therapy) on the clinical symptoms and levels of blood lipids and sex hormones of patients of peri-menopausal syndrome complicated with hyperlipidemia.Methods:With the use of a randomizing digital table method,185 patients that fit the registration standard were randomly assigned to three groups.The 59 cases in Group A were treated with two Chinese patents,Kunbao Pill(坤宝丸) and Modified Xiaoyao Pill(加味逍遥丸);the 63 in Group B received psychological intervention alone;and the 63 in Group C were treated with both(the combined therapy),with the treatment course for all six months.The items of observation included: (1) scoring by SCL-90 on eight factors and seven symptoms;(2) scoring on Chinese medicine symptoms by Kupermann scale,including anxiety and bad temper,scorching sense ation with sweating,dizziness,tinnitus, soreness and weakness of the loin and knees,palpitation,insomnia,lassitude,weakness,and hyposexuality; (3) blood contents of total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C), low-density lipoprotein cholesterol(LDL-C),apoprotein Al(ApoAl) and B(ApoB);(4) levels of sex hormones, including estradiol(E_2),progesterone(P),pituitary prolactin(PRL),follicular stimulating hormone(FSH),and luteinzing hormone(LH) in some randomly selected patients;(5) adverse reaction;and(6) one-year follow-up study on long-term effect.Results:A total of 21 patients(6,8,and 7 cases in Groups A,B,and C,respectively) dropped out;the drop-out rate was insignificant among groups.(1) The markedly effective rates in Group A, B,and C were 26.42%(14/53),18.18%(10/55),and 53.57%(30/56),respectively,and the total effective rates in them were 64.15%(34/53),50.91%(28/55),and 87.50%(49/56),respectively,suggesting the therapeutic efficacy in Group C was significantly better than that in Groups A and B(P0.01).(2) SCL-90 scoring showed that the total scores decreased significantly after treatment in Group C(P0.01),but remained unchanged in Groups A and B(P0.05).(3) Scoring on Chinese medicine symptoms showed the same results as shown by SCL-90 scoring in terms of total scores and individual symptoms,except that menstrual disorder and amenorrhea were unchanged in all three groups(P0.05).(4) Levels of HDL-C,ApoAl,and E_2 increased and those of TG,TC,LDL-C,ApoB,FSH,and LH decreased after treatment in Group C,reaching near normal levels;similar trends of blood lipids were shown in Group A,but the level of sex hormones was unchanged.In Group B all the above-mentioned indices were unchanged(P0.05).(5) A one-year follow-up study showed the markedly effective rate and the total effective rate in Group C were higher than those in the other two groups respectively(P0.01).(6) No adverse reaction was found.Conclusion:Chinese medicine therapy combined with psychological intervention could not only improve the nervous symptoms,but also regulate the blood levels of lipids and sex hormones in patients of peri-menopausal syndrome complicated with hyperlipidemia.     

抗痫制剂对癫痫模型小鼠学习记忆变化的影响

目的 探讨抗痫制剂对戊四氮致痫小鼠学习、记忆力改变的影响。方法 健康成年雄性小鼠60只,随机分为空白对照组,模型对照组,抗痫制剂大剂量组、中剂量组、小剂量组和丙戊酸钠组,每组10只。抗痫制剂大、中、小剂量组小鼠分别以抗痫制剂 14.8mg/g、7.4mg/g和3.7mg/g灌胃,每天1次,连续7d;复制戊四氮诱导急性癫痫模型;水迷宫测定抗痫制剂对致痫小鼠学习和记忆力的影响。结果 与空白对照组相比,模型对照组小鼠逃避潜伏期延长,行程出错率增加(P<0.05);与模型对照组和丙戊酸钠组相比,抗痫制剂大、中、小剂量组小鼠逃避潜伏期缩短、行程出错率减少(P<0.05)。与模型对照组相比,丙戊酸钠组小鼠逃避潜伏期、行程出错率均值虽增加,但差异无统计学意义(P>0.05)。结论 模型对照组和丙戊酸钠组小鼠学习、记忆力降低;抗痫制剂能缩短模型小鼠水迷宫逃避潜伏期,减少行程出错率,明显改善致痫小鼠学习记忆能力。     

促排卵过程中子宫内膜厚度变化对IVF-ET结局的影响

目的:探讨促排卵过程中子宫内膜厚度变化趋势对IVF结局的影响,以及不同促排卵方案对子宫内膜厚度变化趋势的影响。方法:回顾性分析1 173个IVF-ET周期,控制性促排卵方案包括:长方案(568例)、口服避孕药(OC)+GnRHa方案(425例)、拮抗剂方案(107例)和超长方案(73例)。比较各种促排卵方案的妊娠组与非妊娠组的子宫内膜厚度变化情况,包括Gn启动当日、启动后第5日、hCG注射日及子宫内膜差值1(=启动后第5日内膜厚度-启动当日内膜厚度)、子宫内膜差值2(=hCG注射日内膜厚度-启动后第5日内膜厚度)、子宫内膜差值3(=hCG注射日内膜厚度-启动当日内膜厚度)。结果:hCG注射日子宫内膜厚度妊娠组均较未妊娠组显著增加(P<0.05);Gn启动当日子宫内膜厚度、促排卵第5日子宫内膜厚度、子宫内膜厚度差值1、差值2、差值3妊娠组与未妊娠组间均无统计学差异(P>0.05)。结论:促排卵过程中子宫内膜厚度的变化趋势不能预测IVF结果,不同的促排卵方案不影响子宫内膜厚度的变化趋势。