之前研究發(fā)現(xiàn),，與無名指較長的男人相比，無名指和食指一樣長的男人更可能面臨生育問題,。研究人員發(fā)現(xiàn),，通過輔助生殖技術誕生的男孩(試管嬰兒)可能面臨同樣的問題。
這種方法叫卵胞漿內(nèi)單精子注射技術,，也稱ICSI,，是把單個精子直接注入卵子中。這種技術現(xiàn)在越來越多地用于那些少精,、精子成活率較低或精子畸形的男性,。這種技術在20世紀90年代早期才得以推廣，因此通過這種方法誕生的孩子現(xiàn)在還未到結婚生子的年齡。研究人員表示,，因為與自然受孕產(chǎn)下的孩子相比,，借助卵胞漿內(nèi)單精子注射技術生下的男孩的無名指相對食指較短，這說明他們遺傳了父親的生育問題,。
這份研究報告的第一作者,、兒童健康研究所的兒科醫(yī)生阿拉斯泰爾·蘇切克利夫指出，卵胞漿內(nèi)單精子注射技術應只在絕對需要的情況下使用,。蘇切克利夫的這一研究發(fā)表在《生殖生物醫(yī)學在線》（Reproductive Biomedicine Online）雜志上,。他說：“這是關于這類兒童的第一份研究，我們目前還不清楚這一發(fā)現(xiàn)的意義,，因為兒童還很小,，但是我們需要告知人們卵胞漿內(nèi)單精子注射技術的可能風險。”
手指的長度被認為由胎兒在母親子宮內(nèi)接觸的睪丸激素決定,，還與子女是否抑郁和是否具有攻擊性相關,。英國生殖學會發(fā)言人、設菲爾德大學男性不育資深專家艾倫·帕西稱,，卵胞漿內(nèi)單精子注射技術應該只用于“絕對需要的情況下”,。（生物谷Bioon.com）
手指與性能力聯(lián)系
生物谷推薦原始出處：
Reproductive BioMedicine Online doi:10.1016/j.rbmo.2009.12.013
Assessment of vision and hearing in children conceived spontaneously and by ICSI: a prospective controlled, single-blinded follow-up study
A.K. Ludwiga, , , A. Hansenb, A. Katalinicc, A.G. Sutcliffed, K. Diedriche, M. Ludwiga and Thyen Uteb
a Zentrum für Hormon- und Stoffwechselerkrankungen, Reproduktionsmedizin und Pr?natale Medizin, Endokrinologikum Hamburg, Lornsenstr 4–6, 22767 Hamburg, Germany
b Department of Paediatrics, Medical University of Lübeck, Germany
c Institute of Cancer Epidemiology and Institute of Social Medicine, Medical University of Lübeck, Germany
d Department of Gynaecology and Obstetrics, Medical University of Lübeck, Germany
e Institute of Child Health, University College London, London WC1N 1EH, UK
Long-term follow-up studies on the health of children born after assisted reproduction technologies are mandatory. Vision and hearing are the most important senses that continue to develop during childhood. There are few reports on vision and hearing in preschool children born after assisted conception. This prospective controlled blinded follow-up study examined 276 term-born singleton intracytoplasmic injection (ICSI) children and 273 spontaneously conceived controls at a mean age of 5.5 years and performed detailed vision and hearing test and clinically examined eyes and ears. There was no significant difference between ICSI and control children regarding the occurrence of vision or hearing impairments. Unsurprisingly, children with abnormalities in otoscopy were more likely to have an abnormal hearing test compared with children without abnormalities. Only 8.5% of ICSI parents and 25.4% of control parents whose children showed an abnormal hearing test knew about the hearing problems of their child. In conclusion, there was no difference in the development of hearing and vision in ICSI children and spontaneously conceived controls. But only few parents knew about hearing problems of their child after undergoing routine screening examinations. Parental interviews would therefore not be sufficient in order to assess vision and hearing in follow-up studies.
