人類胎盤沒有微生物組
作者:
小柯機器人發布時間:2019/8/15 14:35:12
人類胎盤沒有微生物組,但可能含有潛在的病原體,這一成果由英國國立衛生研究院生物醫學研究中心Gordon C. S. Smith和劍橋大學Julian Parkhill研究團隊合作取得。該項研究成果發表在2019年8月15日出版的《自然》上。
研究人員試圖確定先兆子癇、自發性早產或胎齡小嬰兒的分娩是否與人胎盤中細菌DNA的存在相關。研究人員發現沒有證據表明絕大多數胎盤樣本中存在細菌,包括複雜和不複雜的妊娠。幾乎所有信號都與分娩過程中細菌的獲得或實驗室試劑受細菌DNA汙染有關。例外的是無乳鏈球菌(Streptococcus agalactiae,B組鏈球菌),在分娩前約5%的樣本中檢測到非汙染信號。研究人員得出結論,胎盤的細菌感染不是不良妊娠結局的常見原因,並且人類胎盤不存在微生物組,但它確實是臨產期獲得無乳鏈球菌的潛在位點,而無乳鏈球菌是新生兒敗血症的主要原因。
附:英文原文
Title: Human placenta has no microbiome but can contain potential pathogens
Author: Marcus C. de Goffau, Susanne Lager, Ulla Sovio, Francesca Gaccioli, Emma Cook, Sharon J. Peacock, Julian Parkhill, D. Stephen Charnock-Jones, Gordon C. S. Smith
Issue&Volume: Volume 572 Issue 7769
Abstract: We sought to determine whether pre-eclampsia, spontaneous preterm birth or the delivery of infants who are small for gestational age were associated with the presence of bacterial DNA in the human placenta. Here we show that there was no evidence for the presence of bacteria in the large majority of placental samples, from both complicated and uncomplicated pregnancies. Almost all signals were related either to the acquisition of bacteria during labour and delivery, or to contamination of laboratory reagents with bacterial DNA. The exception was Streptococcus agalactiae (group B Streptococcus), for which non-contaminant signals were detected in approximately 5% of samples collected before the onset of labour. We conclude that bacterial infection of the placenta is not a common cause of adverse pregnancy outcome and that the human placenta does not have a microbiome, but it does represent a potential site of perinatal acquisition of S. agalactiae, a major cause of neonatal sepsis.
DOI: 10.1038/s41586-019-1451-5
Source:https://www.nature.com/articles/s41586-019-1451-5