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维生素B12对体外乙醇诱发小鼠胚胎畸变的影响
Effects of vitamin B12 on ethanol-induced mouse embryonic abnormality in vitro
【作者】 李丽; 张召锋; 韩静; 许雅君; 柳鹏; 李勇;
【Author】 LI Li,ZHANG Zhaofeng,HAN Jing,XU Yajun,et al. School of Public Health,Peking University,Beijing 100083,China
【机构】 北京大学公共卫生学院营养与食品卫生系;
【摘要】 目的探讨维生素B12(VB12)对乙醇发育毒性的干预作用。方法采用植入后全胚胎培养技术(WEC),将GD85的ICR小鼠胚胎用4.0g/L乙醇处理,同时用不同浓度VB12(10-6、10-5和10-4mol/ L)干预。在大鼠即刻离心血清中旋转培养48h后对小鼠胚胎生长发育和组织器官形态分化进行评分。结果应用不同浓度VB12干预后,反映胚胎生长发育和组织器官形态分化的指标得分与阳性对照组相比,均有不同程度的提高。其中,10-5 moV/L VB12干预组对胚胎生长发育干预得分总和最高,颅臀长、头长、体节数与阳性对照组相比差异均有显著性(P<0.05)。10-4mol/ L VB12干预组对胚胎组织器官形态分化干预得分总和最高,除尿囊、心脏、上颌突、下颌突指标外,其他与阳性对照组相比差异均有显著性(P<0.05)。结论 VB12有拮抗乙醇发育毒性的作用。
【Abstract】 Objective To evaluate the developmental improvement of vitamin B12 on ethanol-induced embryonic abnormality in vitro.Methods Whole embryo culture system was used in this study.Early somite stage(GD8 5) mouse embryo was explanted and cultured in rat serum medium(immediately centrifugal serum,ICS) with vitamin B12(0,10-6, 10-5 and 10-4 mol/L) and ethanol(4.0g/L) for 48h to evaluate the embryo development and morphological differentiation. Results Developments of crowrr rump length,head length and somite number were significantly improved at the concentration of 10-5 mol/L vitamin B12(P<0.05) and the indexes of embryonic growth and development except allantoid,heart,maxillary and mandible significantly increased at the concentration of 10-4 mol/L vitamin B12(P<0.05),which were all compared with the positive group.Conclusion Vitamin B12 could improve ethanol-induced developmental toxicity in mice in vitro.
- 【会议录名称】 达能营养中心青年科学工作者论坛优秀论文集2007年第2期
- 【会议时间】2007-03-01
- 【分类号】R714.7;R722