placental barrier


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placental barrier

[plə′sent·əl ′bar·ē·ər]
(embryology)
The tissues intervening between the maternal and the fetal blood of the placenta, which prevent or hinder certain substances or organisms from passing from mother to fetus.
References in periodicals archive ?
faecalis OG1RF can cross the placental barriers of pregnant mice and translocate into the fetus [6].
Often a woman's body burden of chemicals can be passed in utero through the placental barrier, affecting fetal neurological development.
Perhaps it had crossed the placental barrier, sensitized the baby and eventually caused development of lesions that we saw at delivery.
Likewise, substances that were not known to cause birth defects because they could not pass through the placental barrier might cause birth defects because access to the fetus is possible as a nano‐sized particle.
But during this time, alkaloids in the lupines can cross the placental barrier and temporarily induce fetal immobility.
Another possible explanation could be that the influenza virus would have crossed the placental barrier, causing some foetuses to suffer a cerebral infection.
Although unlikely to cross the placental barrier, LACV IgM antibodies detected in cord serum might have been attributable to transplacental leakage induced by uterine contractions that disrupt placental barriers during labor, which has been documented for anti-Toxoplasma IgM antibodies (5).
* ALL antidepressants, because they are lipophilic (ie, very fat soluble), readily cross the placental barrier and also appear in varying amounts in the breast milk.
Psychotropic medicines are designed to get past the blood-brain barrier and reach the brain, which means they will likely pass through the placental barrier without any difficulty.
Capillaries and villous trophoblast constitute placental barrier which not only separates the maternal and fetal blood but also fulfills a transport role.