Why doesn't the body reject the embryo from the other woman? Iron Chef' Cat Cora and partner are both pregnant Cat, 41, blogs about it today, saying that she will give birth three months after Jen, adding two sons to their family which already includes two sons - Caje, 22 months, and Zoran, 5. "We decided that having them a year apart is harder than having kids as infants together," Cat says of their planned pregnancies. Their four children have the same sperm donor but Cat says,"[Jennifer] carried my embryo and I carried hers. It's like surrogating, but obviously all of our kids are equal."
That's so beautiful and intimate.. It doesn't have to be your own DNA, think about it, eggs from donors don't reject.
Ummm, wouldn't that be exactly why your body doesn't want it. :shrug: Its not yours. Like a donated kidney.
Ooooh, good question! The body is capable of launching immune responses against foreign cells on ‘external’ epithelial surfaces, such as the GI tract and lung alveoli. I don’t see why the epithelial lining of the uterus would be any different. I did some quick reading and it seems that the reasons why an unrelated donor ovum can implant in a woman’s uterus without eliciting any host-graft rejection response are still somewhat of a immunological mystery.
one reason could be that an embro\ovum\sperm ect dont have the protine markers the immune system looks for to identify something as foreign.
If a woman was not pregnant to begin with, would it be a different story? Doesn't a woman who is trying to get pregnant have to get shots to make her womb more hospitable?
The reasons why an embryo-fetus is not rejected are many and still being researched. There seems to be a variety of different pathways by which a embryo-fetus gets the mothers immune system to not attack it, some of which are only theoretical at this time, for example the fetal stem cell infestation of the mother could be a late stage immune system inhibition mechanism. I remember reading awhile back about mechanisms by which a female's immune system learns to ignore sperm.
some womens immune system CANT ignore sperm, this is what causes sperm allergies (REALLY bad when combine with latex allergies)
not really, the body would start to react as soon as the penis is inserted if there is any trace of semon (or latex) on it which means it would be dry, inflamed, red and VERY sore. Ie it would be apsolutly no fun for the women and PROBABLY no fun for the man either because there would be no lubrication
sorry, been one of those days. Spent the whole day either reading resuc guidelines or working on the cardiophysiology of the heart. Forgive me for not responding with a jovial responce rather than a medical onePlease Register or Log in to view the hidden image!
But what if a mother doesn't get pregnant naturally? Do they have to inject her body with hormones or something to trick her body into accepting an embryo implanted in her?
perhaps you need to look into assisted reproductive medicine, from my limited knowledge on the subject a very early stage embryo is simply inserted into the womb of a women via advance syringe to the abdominal (ouch) during a receptive time in her cycle (estrous?) nothing more, only half our less are expected to attach and grow.
Aren't embryos secreting immunosuppressants? I imagine that the protein that locally disables the immune system is relatively generic- seems like a bad place to have variation, as it would greatly decrease the viability of a fertilized embryo for what; not confusing someone else's embryo for your own? I doubt that happened a lot in our evolutionary history.
