Archive for the ‘IVF’ Category
IVF: Why? For whom?
The first “test tube baby” French, Amandine, celebrated its 25th anniversary in early 2007. Each year, more than 12 000 babies born using the techniques of in vitro fertilization in France. When and how to benefit from this technique? All the details on that little nudge from nature.
In human fertilization “naturally” occurs in the fallopian tube of the woman after sex and during ovulation. For that to happen, this fertilization requires a sufficient number of motile sperm capable of walking from the cervix to the fallopian tube after passing through the uterus. It also requires that the tube is perfectly permeable, and its open end in the abdomen, called flag, could attract the oocyte during ovulation. Folds arranged inside the tube and fine movements of the tube itself then allows the oocyte to progress in the trunk to meet the sperm. The oocyte is indeed unable, unlike the sperm to travel alone. After fertilization of the ovum by a spermatozoon, it is again the movements of the trunk that advance the very early embryo into the uterus where it implants after about a week.
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