Most women who seek donor eggs are over the age of 40, with increasing numbers going abroad because of a shortage of donors in this country.
However, the new study of almost 500 pregnancies compared women with an average age of 35 and concluded that the use of a donated egg itself increased risks, regardless of age.
Almost 18 per cent of women who became pregnant following egg donation suffered high blood pressure, the study found, compared with 5 per cent of other women undergoing fertility treatment.
The risk of pre-eclampsia - a condition linked to high blood pressure, which can be fatal, rose from 2.8 per cent to 11.2 per cent.
Researchers said it was possible that the problems stemmed from changes in the embryo’s immune tolerance when it encountered female genes with different traits to those of the egg recipient.
Bērnu salīdzināt ar mēnešreizēm
For a long time, fertility doctors and scientists had suspected that it was possible for a woman carrying an implanted embryo to pass on her characteristics, but this is the first scientific evidence.
Researchers based at a leading Spanish fertility clinic found that secretions from the mother’s womb penetrated pre-implanted embryos influencing their development.
But the researchers have been keen to point out that they are not a full set of genes and are only fragments, which by themselves could not create a child.
Technically it could be argued that children born as a result of egg donation have three parents as the child will carry DNA from the father, the egg donor and the woman carrying the baby.
However the Spanish researchers claim that what is being transmitted by the mother to the foetus are only fragments of DNA and not full DNA.
Doctor Vilella said: ‘These findings have shown us that there is an exchange between the womb and the embryo which was previously not known.
Raven, a par ko tev īsti ir tā histērija? Tevi kāds ar varu spiež un ņem tās plšūnas nost? Negribi neziedo, tās kuras gribēs atradīs informāciju gan par riskiem gan visu pārējo.
Šarlote,man liekas,tas bija domāts kā sarkasms..+++ Palīdzēju ilustrēt piemērus, kādi pēc dažiem komentāriem radušies
Tikai mani izkakātie gēni nenonāks bērnu namā. Viņiem būs ģimene,kas viņus ļoti mīlēs,neskatoties uz to,ka eksistē tādi elles radījumi kā es un pasviedu šiem olšūnas kā tādus atkritumus.