Australian researchers have hit upon a method to identify
IVF embryos that are viable. the researchers have used gene analysis techniques
to determine if IVF embryos can result in a full pregnancy.
After IVF treatment embryos are implanted into the womb
so as to mature there. However most embryos fail to mature to the blastocyst
stage due to a variety of reasons and this new method could help doctors select
viable embryos that can in fact result in pregnancy.
Researchers at the Monash University tested this
technique on 48 women who were undergoing IVF therapy. When the blastocyst
stage was reached, the embryos were analyzed by removing a layer called
trophectoderm. All women received at least one embryo. After the babies were
born, researchers used DNA fingerprinting on cord blood to test which embryos
They also analyzed the genes present during the
blastocyst stage. "The ability to select the single most viable embryo
from within a cohort available for transfer will revolutionise the practice of
IVF, not only improving pregnancy rates but eliminating multiple pregnancies
and the attendant complications," said lead researcher Dr Gayle Jones.
The details appear in
the journal Human Reproduction.