Placenta:孕妇糖尿病对脐带基因表达的影响

2015-05-14 MedSci MedSci原创

众说周知糖尿病孕妇容易生育巨大儿,除此之外还可能对胎儿的发育产生其他影响,而胎儿的脐带则为孕妇对胎儿影响的方面提供了一个可以作研究的脉管系统,因此Koskinen A等人进行了一项研究调查了孕妇糖尿病环境对脐带的生物学效应。研究成果发表在近期《Placenta》上。研究者使用微阵列分析12名新生儿脐带的基因表达情况,其中6名为1糖尿病的母亲的后代,6名设定为对照组。12名新生儿的脐带组织均是在选择

众说周知糖尿病孕妇容易生育巨大儿,除此之外还可能对胎儿的发育产生其他影响,而胎儿的脐带则为孕妇对胎儿影响的方面提供了一个可以作研究的脉管系统,因此Koskinen A等人进行了一项研究调查了孕妇糖尿病环境对脐带的生物学效应。研究成果发表在近期 Placenta上。

研究者使用微阵列分析12名新生儿脐带的基因表达情况,其中6名为1糖尿病的母亲的后代,6名设定为对照组。12名新生儿的脐带组织均是在选择性剖宫产后立即收集。通过实时聚合酶链反应(RT-PCR)验证表达谱(11个基因)。另外研究者还对脐带组织进行组织学分析。

研究结果显示,糖尿病孕妇后代与对照组相比较后发现,其后代脐带组织中有286个基因存在表达差异(差异倍数±1.5, P < 0.01)。孕妇糖尿病对血管发育相关基因(Bone morphogenetic protein 4, Delta-like 1, and Notch homolog 4)的表达产生了重大的影响,对血管壁的完整性相关基因(Collagen type VIII alpha 1, Myocyte enhancer factor 2C, and Matrix metalloproteinase 2)也影响巨大,同时还严重影响了血管功能相关基因(Natriuretic peptide precursor B, Endothelin 1, Endothelin receptor B, Cyclooxygenase 1, and Phosphodiesterase 5A)。对脐带组织进行组织学分析发现,与对照组比较,糖尿病孕妇形成的脐静脉内膜中层更厚、脐静脉更大的、脐动脉内膜中层面积更大。

研究结果表明,孕妇糖尿病环境似乎改变脐带中参与调控血管发育和功能的相关基因的表达,刺激脐血管肌层的增厚。这些变化表明血管表型的修改反过来又可能导致糖尿病母亲的婴儿长期的血管方面不良结局。

原始出处:

Koskinen A, Lehtoranta L, Laiho A, Laine J, Kaapa P, Soukka H. Maternal diabetes induces changes in the umbilical cord gene expression. Placenta. 2015 .

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    2015-06-14 shanyongle
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    2015-09-13 huirong
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    2015-05-17 huaxipanxing

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