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冷冻卵子“时光宝宝”要得吗? 专家:仅适合特殊人群

2017-02-23 佚名 中国江苏网

冻卵真的能让卵子“青春永驻”?生出来的宝宝健康吗?卵子想冻就能冻吗……带着这一系列的疑问,我们邀请到中大医院生殖中心的袁春燕副主任医师为大家一一解答。


“工作狂”忙工作没空结婚生子,大龄剩女想生却没有“合伙人”,眼看就要错过黄金生育年龄了,怎么办?最近,影视明星Hebe田馥甄计划35岁冻卵,志玲姐姐、舒淇早已冷冻了卵子为自己买了份“保险”。所以很多正苦于没有出路的人开始蠢蠢欲动了,东南大学附属中大医院生殖中心门诊也不乏前来咨询冻卵的人,有年轻女子,也有日后想生二胎的宝妈。

冻卵真的能让卵子“青春永驻”?生出来的宝宝健康吗?卵子想冻就能冻吗……带着疑问,中大医院生殖中心的袁春燕副主任医师为网友们解答。

冻卵确实可以保持“青春”

女性卵子质量的黄金期在23-29岁之间,35岁以后卵子质量明显下降。因此,许多暂时没有生娃计划或没有条件的女性,有女明星也有普通人,想到了冻卵这项技术。在年轻时将“生机勃勃”的卵子保存起来,想要宝宝的时候再将它“解冻”、受精、培育、植入母体,等待“瓜熟蒂落”迎接新生命。

袁春燕介绍,卵子取出后被放入培养液中,然后迅速送至实验室冷冻。目前多采用玻璃化冷冻法,几分钟就将卵子温度降至理想储存温度。在超低温环境中,卵子的新陈代谢和分子运动停止,“青春”被定格。待到想生育时,启用的冻卵还是年轻的,卵巢的衰老、体内卵子的衰老和它没有关系。

“时光宝宝”适合特殊人

前不久有报道说广东一女子因患多囊卵巢综合征,早在2000年就冷冻了胚胎,16年后植入体内,在45岁生下一个大胖小子,一出生就“16岁”了。不管是冻精、冻胚还是冻卵,用冷冻技术生下的宝宝,相当于穿越几年甚至十几年的时光来和父母相见,可以叫做“时光宝宝”。但是袁春燕指出,“时光宝宝”并非想生就生的,目前在国内通常是有医学指征的女性才冻卵,比如恶性肿瘤患者要接受放疗、化疗或手术会破坏卵巢,因自身免疫疾病、感染、肿瘤等导致卵巢早、功能减退衰,长期接触有害有毒物质如放射性物质的人。可以说冻卵是一项不得已而为之的助孕技术,正常健康的女性也有来咨询冻卵的,但医院是不推荐的。

宝宝是否健康要看精卵质量

卵子是非常脆弱的,冻卵技术虽日渐成熟,但还是不及冻精、冻胚技术成熟,复苏率相对较低,受遗传学的影响也多一点。而冻卵复苏后要与精子结合,培养成胚胎后再植入体内,“解冻”后运用到的是成熟的试管婴儿技术,这也是中大医院生殖中心常规开展的一项特色技术。冻卵“沉睡”那么久,生出来的宝宝会健康吗?袁春燕表示,“时光宝宝”健康与否主要取决于精子和卵子的质量。40岁时的精子和卵子肯定比不上25岁的,有基础疾病的人排的精子和卵子当然不那么“身强体健”,因医学指征不得已而冻卵的人,日后孕育出的宝宝也是相关疾病的风险人群。

抓住黄金生育期不留遗憾

目前国内外利用冻卵孕育的宝宝还缺乏远期的观察;冻卵要经过促排卵、取卵手术、实验室冷冻等多个环节,这对脆弱的卵子而言潜藏着多重风险,可能造成损伤;促排卵也可能出现并发症如卵巢过度刺激综合征,取卵手术也会有出血感染的风险。冻卵、试管婴儿等助孕技术主要还是为了帮助不孕不育和某些医学指征的人。因此,专家建议女性要抓住生育黄金期,在最好的年华孕育最健康的宝宝,也有足够的精力陪伴孩子成长。

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    2017-12-28 cooco
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    2017-02-24 zlawrance
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