The Placenta Is Not a War Zone

The Yale group didn?t start with grandiose narrative. Instead, the researchers wanted to explain why women who have low levels of a particular protein early in pregnancy seem to be at higher risk for pre-eclampsia later. To do so, they tried to pinpoint what exactly this molecule, called placental protein 13, does under normal circumstances. In a healthy pregnancy, cells that come from the embryo?s placenta?called trophoblast cells?move into the walls of the uterus and help to open up maternal arteries, thereby increasing the available blood and nutrient supply. By studying tissue from abortions, the Yale group found that placental protein 13 was essentially absent near these crucial arteries. Instead, it had built up around the veins, in areas where the lining of the uterus appeared damaged.

Source: http://feeds.slate.com/click.phdo?i=91b67bddf8de9745aab47e9b4eec539b

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