The ratio of male to female sex among infants born to 391 women with and 114 079 without placenta praevia was analysed by parity. In the women without placenta praevia the sex ratio decreased significantly with increasing parity, whereas in the women with placenta praevia it increased. Overall, the sex ratio was increased among the women with placenta praevia, particularly multiparas. An increa...

To investigate the expressions of Fas and Fas ligand (FasL) in human placenta, we studied the expressions of Fas and FasL in placenta with RT-PCR, immunoblotting and immunostaining. We observed amplified products of Fas and FasL transcripts, the band of Fas (52 kDa) and multiple bands of FasL (42-52 kDa) in placenta. Fas and FasL localized mainly on fetal vessels and on syncytiotrophoblasts res...

Placenta accreta during the first trimester of pregnancy is rare. Only a few cases of placenta accreta manifesting as a uterine mass have been published. Most patients with placenta accreta present with vaginal bleeding during or after pregnancy. This report describes a patient with placenta accreta that caused vaginal bleeding three years after a first trimester abortion. The patient had regul...

Rat embryos explanted with their membranes at head-fold stage (9 1/2 days gestation) formed an allantoic placenta which enlarged in culture and developed a foetal blood circulation. Embryos explanted at early somite stages (10 1/2 days) also formed a growing allantoic placenta but only after removal of most of the ectoplacental trophoblast. Assays of total protein in the embryo and placenta sug...

AIM To evaluate potential risk factors and perinatal outcome of pregnancies complicated with placenta previa in Croatian population of pregnant women recruited from the largest tertiary care perinatal center in Croatia. METHODS This retrospective case-control study included a total of 202 singleton pregnancies with placenta previa during a 10-year study period and 1,004 randomly selected simp...

We present here a case of uterine perforation following manual removal of the placenta during the third stage of normal labor. Total abdominal hysterectomy was performed, and the 4x3-cm perforation of the uterus and placenta accreta were confirmed. In this case, the round ligament covering the hematoma prevented bleeding into the peritoneal cavity and peritonitis. Manual removal of the placenta...

BACKGROUND In the human placenta, maternal and fetal bloods exchange substances through the surface of the villous trees: the fetal blood circulates in the villous trees, around which the maternal blood circulates. The blood flows directly influence fetal growth. Stem villi, the main supports of the villous tree, have contractile cells along the axes, whose contractions are expected to influenc...

The human placenta exhibits unique structural and multifunctional features. It is known to have the capacity to synthesize, store and secrete hormones of the hypothalamohypophyseal axis, but the existence of neurotransmitters and neuropeptides in the human placenta has attracted a great deal of attention. This is especially important when it is considered that the placenta is a non-innervated o...