Donated eggs raise pregnancy risks

New research indicates that women who become pregnant with donated eggs are likelier to suffer miscarriages and high blood pressure than those who undergo fertility treatment with their own eggs.

    The risks are higher if eggs come from an unrelated donor

    In a study presented on Tuesday at the annual meeting of the European Society of Human Reproduction and Embryology, Korean scientists reported that the risk was higher if the donated egg came from a woman who was not related to the patient.

    Previous studies have shown that dangerous high blood pressure is more common in pregnancies from donated eggs, but it has been unclear why.

    Experts said latest findings indicate the greater risks are because donated eggs, like transplanted organs or tissue, are not genetically identical to the recipient and probably awaken the immune system.

    The placenta formed after egg donation may have more foreign elements and trigger abnormal responses from the mother, which could result in complications, such as miscarriages or high blood pressure.

    Eggs from strangers likely trigger a heavier immune reaction than eggs from a relative, experts said, adding that the findings suggest women who need donated eggs might be better off with eggs from a relative.

    High blood pressure

    In the study, conducted by Dr Cha Sunhwa of Sungkyunkwan University School of Medicine in Seoul, South Korea, 61 pregnancies involving egg donation were compared with a matched group of pregnancies achieved through standard infertility treatment.

    Pregnancy-induced high blood pressure, which can become life-threatening to mother and baby, occurred in 12.5% of the women who got donated eggs and in 3.7% of the women who used their own eggs.

    The problem was twice as likely to occur following egg donation from a sister, but more than five times as likely following egg donation from a stranger, the study found.

    SOURCE: Agencies


    YOU MIGHT ALSO LIKE

    Interactive: Coding like a girl

    Interactive: Coding like a girl

    What obstacles do young women in technology have to overcome to achieve their dreams? Play this retro game to find out.

    Heron Gate mass eviction: 'We never expected this in Canada'

    Hundreds face mass eviction in Canada's capital

    About 150 homes in one of Ottawa's most diverse and affordable communities are expected to be torn down in coming months

    I remember the day … I designed the Nigerian flag

    I remember the day … I designed the Nigerian flag

    In 1959, a year before Nigeria's independence, a 23-year-old student helped colour the country's identity.