PNAS:中性粒细胞疗法或可明显改善孕妇胎盘的发育

2016-12-13 佚名 生物谷

图片来源:medicalxpress.com 近日,来自伦敦大学玛丽皇后学院的研究人员通过对小鼠和人类血液样本进行研究发现,利用激素来处理一类白细胞或可改善怀孕女性胎盘的发育;相关研究结果刊登于国际杂志PNAS上。 先兆子痫(pre-eclampsia)是一些怀孕女性经常会出现的疾病,其会导致胎盘中母源性血管发育不良,最后导致胎儿生长不良;据世界卫生组织数据显示,在发达国家和发展中国家中,

图片来源:medicalxpress.com

近日,来自伦敦大学玛丽皇后学院的研究人员通过对小鼠和人类血液样本进行研究发现,利用激素来处理一类白细胞或可改善怀孕女性胎盘的发育;相关研究结果刊登于国际杂志PNAS上。

先兆子痫(pre-eclampsia)是一些怀孕女性经常会出现的疾病,其会导致胎盘中母源性血管发育不良,最后导致胎儿生长不良;据世界卫生组织数据显示,在发达国家和发展中国家中,先兆子痫是引发孕产妇及胎儿发病及死亡的主要原因,在所有怀孕女性中先兆子痫的发病率为2%-8%。

这项研究中研究者重点对中性粒细胞进行了深入研究,中性粒细胞是机体应对感染第一道防线中寿命较短的白细胞,研究者发现该细胞在维持女性健康怀孕中扮演着重要角色;文章中研究者对比了健康怀孕女性和先兆子痫怀孕女性机体的血液样本,结果发现,在健康女性的血液中中性粒细胞能够同另外一种免疫系统关键细胞—T细胞相互作用,而在先兆子痫女性中,中性粒细胞却并不能同T细胞相互作用。

研究者指出,在健康怀孕过程中,中性粒细胞能够帮助T细胞来促进血管生长,从而促进胎盘正常发育,因此中性粒细胞或许就能够作为一种妊娠并发症的潜在治疗靶点。体外研究中,研究者利用孕酮和雌三醇来处理来自先兆子痫女性机体中的中性粒细胞,结果发现,处理后的中性粒细胞就能够同T细胞相互作用;对先兆子痫怀孕小鼠进行深入研究发现,如果中性粒细胞接受相同的激素疗法,并且被重新注入小鼠机体后,小鼠的胎盘发育就会重新回归正常。

Suchita Nadkarni博士表示,未来尽管我们还有很长一段路要走,同时还需要很多研究来在大量病人中证实相关的研究结果,但目前来看本文研究结果对于未来开发治疗妊娠并发症的新型疗法非常重要,如果我们能够在人类机体中重现在小鼠机体中的研究发现,将处理后的中性粒细胞重新注入到血液中,那么或许就能够使得先兆子痫怀孕女性机体中的胎盘发育恢复正常。

当然本文研究也为科学家们深入理解怀孕期间母源性机体免疫系统的工作机制也提供了新的研究方向和思路。

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    2017-06-11 drwjr
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    2016-12-15 neurowu
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