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母亲在怀孕时受到侵害,危及到胎儿的健康和身体的完整时,胎儿是否享有损害赔偿请求权?20世纪50年代以来,世界各国(尤其法制发达国家)均陆续发生关于胎儿期内遭受不法行为侵害的诉讼案,原告基于胎儿期内遭受的不法侵害事实向加害人请求损害赔偿。我国近年来也多有此类案件发生并引起众多法律、道德上的讨论,但是尚未形成定论。本文将以胎儿是否具有民事权利能力为切入点对胎儿的损害赔偿请求权加以分析。 相似文献
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Objective: To investigate the factors that might influence the success of an embryo freezing and thawing program. Method:
The relationship between the pregnancy rate in 73 cycles of embryo, freezing and thawing program and the following factors
was analyzed: maternal age,E
2 level at the time of HCG trigger, embryo storage time, number of thawed embryos transferred, presence of sponsoring embryos
and intact embryos. And the survival rate of thawed embryos with different morphology, cell stage and storage time was evaluated.
Result: Transfer with three or more than three thawed embryos resulted in pregnancy rates of 38.5% and 35.7%, respectively,
compared with 5.3% for transfer of fewer than three embryos. The presence of sponsoring embryos and intact embryos significantly
increases pregnancy rate in embryo freezing and thawing program. No other factor examined had any effect on pregnancy outcome.
The survival rate of good morphology embryos was higher than poor ones, but was not influenced by cell stage and storage time.
Conclusion: Embryo morphology before freezing, number of thawed embryos transferred and the presence of intact embryos are
important to the outcome of embryo freezing and thawing program. 相似文献
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地塞米松对小鼠腭突细胞增殖和分布的影响 总被引：3，自引：2，他引：1
目的:通过比较不同时期正常胎鼠和地塞米松诱导的腭裂胎鼠中间嵴上皮细胞(MEE)和腭突间充质细胞(EPM)的数目和分布情况,初步探讨腭裂形成的机制。方法:选取孕鼠30只,随机分为对照组和实验组,实验组于妊娠GD11.5腹腔内注射50mg/kg地塞米松,干扰胎鼠腭突发育,分别于GD12.5,13.5,14.5,15.5,16.5时取材,共获胚胎284只,取头部标本做冠状切片,切片厚6μm,HE染色,光镜下观察,记录MEE细胞的数量和EPM细胞的数目和分布情况。结果:实验组和对照组腭突突部EPM明显多于根部,且实验组EPM发育滞后于对照组;GD13.5,14.5,15.5时实验组EPM细胞数量少于对照组;实验组MEE细胞在GD15.5,16.5时大量存在,而对照组GD14.5时开始融合甚至消失。结论:地塞米松导致的EPM细胞增殖抑制和MEE细胞的转归异常,是腭裂形成的重要原因。 相似文献
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试论金华奶牛胚胎移植应用前景 总被引：1，自引：0，他引：1
金华奶牛发展迅速，数量持续上升。但高产良种比重偏少，泌乳母牛305d校正产奶量只有5000kg-5500kg左右。若要加快良种培育与推广，以期在尽可能短的时间内达到提高牛群总体质量的目的，那就必须建立金华奶牛良种繁育基地，大规模地应用胚胎移植技术。其前景将是十分广阔和诱人的。 相似文献
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Objective:To evaluate the accuracy of a scoring system combining zygote and embryo morphology in predicting the outcome of in vitro fertilization(IVF)treatment.Methods:In a study group,117 consecutive IVF or intracytoplasmic sperm injection(ICSI) cycles with embryo transfer were carried out and 312 embryos were scored Using a combmed scoring system(CSS)of zygote and embryo morphology before transplantation.In a control group,a total of 420 IVF or ICSI cycles were carried out and 1176 embryos were scored using a cumulative embryo score(CES).The effects of the combined scoring system on the embryo implantation rate and pregnancy rate per cycle were analyzed.Results:Using the combined scoring system,the embryo implantation rate(27.6%)and the clinical pregnancy rate(48.7%)were significantly higher than those in the control group(20.8%and 38.6%,respectively).Also,the implantation rate of embryos scoring≥70 (38.5%:82 sacs/213 embryos)was significantly higher (P＜0.001)than that of embryos scoring＜70(4%:4 sacs/99 embryos).The pregnancy rate of patients with embryos scoring≥70 using the combined scoring system(66.7%)Was significantly higher(P＜0.001)than that of patients with embryos scoring≥20 using the cumulative embryo score(59.0%).Conclusion:The results suggest that selecting embryos with a high Score(≥70)using the combined scoring system could inerease the implantation rate and pregnancy rate,and that using a scoring system combining assessments of human zygotes and pre-implantation embryos might predict IVF outcomes more accurately than using a cumulafive embryo score. 相似文献
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哺乳动物胚胎的冷冻保存及其应用 总被引：1，自引：0，他引：1
本文阐述了哺乳动物胚胎的冷冻保存技术原理，并对这一技术的应用前景进行展望。 相似文献
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