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New technique to improve IVF success rates

Wed, Apr 29, 2015, 02:58 PM
Taipei, April 29 , 2015: There is good news for couples wanting to start a family with the help of in vitro fertilisation (IVF). A technique Taiwanese researchers have developed could facilitate selection of the most viable embryos to implant, lead to higher IVF success rates and ultimately lower its cost.

"It will lower the stress level of patients greatly, if the number of IVF cycles and embryos transferred can be reduced while maintaining a promising outcome," said lead researcher Chihchen Chen from the National Tsing Hua University in Taiwan.

In IVF treatment, eggs are mixed with sperm in test tubes, and the fertilised eggs grow into embryos that can be implanted inside the uterus of a woman, who will carry them to term.

However, the procedure can be time-consuming, costly, and emotionally draining, often requiring multiple implantation cycles before a successful pregnancy.

The new technique may more effectively grow and screen embryos prior to implantation.

Often, embryos in IVF are pooled together in small drops of fluid and then transferred into the uterus. Culturing the embryos in groups is efficient, but it also makes the implantation less selective: Lab technicians cannot easily assess the viability of an individual embryo in the microdrop.

The researchers instead developed a way to culture mouse embryos in a plate of open microwells, spreading them out over the plate so each well contains just one or two embryos.

A layer of oil over the top prevents embryos from moving between microwells while still allowing a micropipette to penetrate into the system to eventually transfer the embryos to the uterus.
Agency: IANS

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