鸦胆子茎节组培快繁体系的建立

目的：建立鸦胆子茎节组培快繁体系。方法：选用鸦胆子嫩枝为外植体,探讨基本培养基和外源激素对其离体再生的初代培养、继代增殖、生根培养的影响,并进行移栽试验。结果：鸦胆子的不定芽增殖、壮苗、生根的最佳培养基分别为MS＋6-BA1．0mg·L^-1＋IBA0.1mg·L^-1,1／2MS＋香蕉汁20g·L^-1;1／2NS＋IBA0．1mg·L^-1＋NAA0．1mg·L^-1。炼苗基质为细沙时,成活率最高。     

Class I major histocompatibility complex antigen expression on early murine trophoblast and its induction by lymphokines in vitro

The expression of paternal class I and class II major histocompatibility complex (MHC) antigens in cultures of murine ectoplacental cone trophoblast was examined using immunogold labelled antibodies and electron microscopy. Class I MHC antigens could be induced on ectoplacental cone derived trophoblast following exposure to concanavalin A stimulated T cell supernatants. Class I MHC antigens were not detected in untreated trophoblast cultures. Class II MHC antigens were never detected on trophoblast whether treated or untreated. This is the first report of the experimental induction of Class I MHC antigens on a population of normally MHC-negative trophoblast cells.     

卵巢早衰治疗策略探讨

目的　评价性激素替代治疗 (hormonereplacementtreatment,HRT)对卵巢早衰 (prematureovarianfail ure ,POF)患者的疗效 ,探讨卵巢早衰可能有效的促排卵方案。方法　采用前瞻性研究方法对 19例卵巢早衰患者 ,行HRT共 3～ 6个周期 ,观察服药前后临床症状、盆腔超声相、血清生殖激素变化及停药后卵泡发育情况 ,并对个别患者行促排卵治疗观察疗效。结果　 19例患者经HRT临床症状明显缓解。与服药前比较 ,血清卵泡刺激素 (FSH)水平明显下降 (P <0 0 1) ,血清黄体生成素 (LH)水平显著下降 (P <0 0 5 )。双侧卵巢及子宫体积无显著变化 (P >0 0 5 ) ,子宫内膜明显增厚 (P <0 0 1)。停药后 1例自然妊娠 ,1例自发排卵 ,1例用促性腺激素释放激素激动剂 (GnRHa) /绝经期促性腺激素 (HMG) /绒毛膜促性腺激素 (HCG)治疗有排卵。服药期间无肝功能损伤及其它副反应。结论　性激素替代治疗卵巢早衰 3～ 6个周期 ,可使临床症状缓解 ,血清FSH、LH明显下降 ,利于促排卵治疗成功。     

Evaluation of the effect of extra-amniotic normal saline infusion alone or in combination with dexamethasone for the induction of labor

AIM: To compare the effect of extra-amniotic normal saline solution infusion on its own, and in combination with dexamethasone on the ripening of the cervix and induction of labor. METHODS: A double-blind randomized clinical trial study was performed at Akbar Abadi Teaching Hospital in Tehran, Iran, between March 2002 and March 2003 on 84 pregnant women at a gestational age of 40 weeks or more, and with a Bishop score induction of labor. The women were randomly assigned into the two groups. In 41 cases, dexamethasone 20 mg extra-ovulary, plus extra-amniotic saline solution infusion (EASI) was prescribed, and in 43 patients EASI alone was prescribed. After 6 h of these protocols, oxytocin was started. Following this the process of labor up to delivery was followed in the two groups and a comparison was made. RESULTS: There were no statistically significant differences between the two groups according to age, parity, gravidity and primary Bishop score. Of the 84 women, 75 entered the active phase of labor (38 [88.37%] in the EASI group and 37 [90.25%] in combined group) without a significant difference. The duration between oxytocin infusion until delivery were 7.25+/-2.86 h and 9.76+/-3.91 h in the dexamethasone and EASI groups, respectively, which showed a statistically significant difference (P=0.002). There were no significant differences between the two groups according to cesarean section rate, meconium passage by fetus, neonatal Apgar score, birthweight, and need for the neonatal intensive care unit. There was a statistically significant negative correlation between gravidity and interval between oxytocin induction and delivery (P=0.001, r= -474). CONCLUSION: Extra-amniotic saline solution infusion is a suitable and cheaper method for the ripening of the cervix and induction of labor, and adding the dexamethasone to it can shorten the duration of labor without any significant risk to the mother or her fetus.     

绵羊产后诱发发情试验

本试验利用多种方案对90只哺乳母羊采用羔羊提前断奶、公羊性刺激并结合激素处理发发情，以达到缩短产羔间隔，提高繁殖率的目的，经试验测定，母羊发情率平均为32.22%，情期受胎率平均为31.03%，效果不理想，需进一步对此进行研究。     

麻醉诱导期罗库溴胺与阿曲库胺不同注射速度对血流动力学的影响

目的观察腹腔镜胆囊切除手术麻醉诱导期不同注射速度的罗库溴胺与阿曲库胺对血流动力学的影响。方法57例择期进行腹腔镜胆囊切除手术的患者随机分为R1、R2、A1、A2四组。监测并记录诱导前,肌松药注射后1、3min及手术结束时的平均动脉压（MBP）、心率（HR）,同时评估插管条件。结果A,组中,肌松药注射后1、3min的MBP比诱导前有明显下降,HR明显增快。其他各组MBP、HR未观察到明显变化。各组手术结束时的MBP、HR与诱导前比较,差异无统计学意义。结论麻醉诱导时快速注射罗库溴胺与阿曲库胺,阿曲库胺明显影响血流动力学。