(n.) The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth.
(n.) The part of a pistil or fruit to which the ovules or seeds are attached.
Example Sentences:
(1) These studies, in addition to demonstrating that the placenta contains TRH deamidase activity, suggest that losses of fetal TRH through the placenta are not large.
(2) A cDNA library prepared from human placenta has been screened for sequences coding for factor XIIIa, the enzymatically active subunit of the factor XIII complex that stabilizes blood clots through crosslinking of fibrin molecules.
(3) 1) The incidence of premature rupture of the membranes (PROM), threatened premature delivery, toxemia and abruption placentae were 40.6, 36.4, 7.8 and 3.0%, respectively.
(4) By contrast, there was a rapid exchange of tracer Leu carbon between placenta and fetus resulting in a significant flux of labeled KIC from placenta to fetus.
(5) GnRH has paracrine (local) effects in the gonads and placenta, acts as a neurotransmitter in the central nervous system, and has autocrine regulatory effects in some tumour cells.
(6) However, a history of abruptio placentae revealed an 11-fold risk of premature separation of placentae in subsequent pregnancy.
(7) In the first model, the kinetics of the number of bacteria in the spleen, liver, and placenta of mice inoculated intravenously on day 16 of pregnancy were monitored for 48 h after infection.
(8) This was either giant teratoma of placenta or malformed twin foetus.
(9) DNA of cytomegalovirus (CMV) was examined in 131 placentae and 28 umbilical blood specimens by DNA-DNA hybridization.
(10) A stillborn girl, with external signs of trisomy 18 syndrome, was subsequently shown to have a mosaic pattern in both the lymphocytes and the placenta.
(11) The placenta was demonstrated to increase in thickness with advancing menstrual age.
(12) Glutathione S-transferase (GST) purified from Schistosoma mansoni or human placenta was inhibited by the antischistosomal drug oltipraz (OPZ) in a time- and concentration-dependent manner.
(13) We have found FLT4 expression in human placenta, lung, heart, and kidney, whereas the pancreas and brain appeared to contain very little if any FLT4 RNA.
(14) Based on morphological, virological, biochemical and molecular biological data, it is proposed that the presence of endogenous retrovirus particles in the placental cytotrophoblasts of many mammals is indicative of some beneficial action provided by the virus in relation to cell fusion, syncytiotrophoblast formation and the creation of the placenta.
(15) The levels of oestrogens and progesterone were greater (P less than 0.05) in the umbilical vein than umbilical artery, indicating the endocrine function of the placenta.
(16) In each rabbit, a single fetal sac was opened, the umbilical vessels were cannulated and the placenta was perfused in situ with buffered Krebs solution containing Dextran.
(17) Two similar, 41- and 67-kDa G-proteins were identified in the wheat germ-purified insulin receptor preparations obtained from human placenta.
(18) It was concluded that (i) free fatty acids can cross the rabbit placenta in amounts sufficient to provide the fatty acid components of stored triglyceride and structural lipids; (ii) placental transport of free fatty acids depends in part on maternal blood concentration and on foetal uptake; (iii) foetal circulating free fatty acids are continually exchanging with fatty acid pools in the placenta and with the maternal circulating free fatty acids.
(19) We postulate that the apposition of trophotaenial epithelium to the internal ovarian epithelium constitutes a placental association equivalent to a noninvasive, epithelioform of an inverted yolk sac placenta.
(20) These data suggest that fasting mobilizes maternal fuel stores but that these stores are not effectively used by the placenta or transported to the fetus for storage.
Placentary
Definition:
(a.) Having reference to the placenta; as, the placentary system of classification.
Example Sentences:
(1) The chlamydiae-strains designated LH-5109 and PK-5082 were isolated by inoculating placentary suspensions to the yolk sacs of chicken embryos.
(2) A good relation exists with the parameters which denote placentary insufficiency and fetal risk (irregularity in the homogeneity of the placenta, elevation of the total and thermostable alkaline phosphatase, positive amnioscopy) and also with those that are related with fetal maturity (biparietal diameter, shake test, organge cells, creatinine in amniotic fluid, etc.).
(3) Abortions and premature labor with weight and size underdeveloped products and placentary hemorrhages occur.
(4) Dismature newborns, products of the placentary insufficiency in posterm pregnancy, although the point of interest of obstetricians, pediatricians and perinatologists because of its high rates of morbimortality, constitute a minority in comparison with fetus of posterm pregnancies with high newborn weights.
(5) Thirty five (4.26%) NB presented a placentary infections by T. cruzi, but having a negative direct parasitological examination in the cord blood, these NB were followed up parasitologically (microhematocrit), in order to detect an eventual positive change in the post-partum period.
(6) Benflurone penetrates through the placentary barrier.
(7) Inhaled thinner passes directly to the blood stream and crosses the placentary barrier freely reaching the embryo.
(8) Also, reference is made to the limited importance of macroscopically determined placentary conditions to individual cases.
(9) In the cytoplasm of placentary cells of two miscarrying ewes chlamydiae were proved microscopically.
(10) Amniotic cholinesterases have an prominent placentary origin, with, in addition, a likely activity proceeding from cellular elements.
(11) This is a rare but serious accident which exposes the mother and the surviving fetus to the transfer of placentary and fetal thromboplastins or to the direct embolization of necrosed fragments of the placenta.
(12) The authors (AA) comment on the results and present the hypotheses about the available data: (1) maternal enteroviremia and faecal virus shedding without placental invasion, placentary damage being an unspecific consequence of infection; (2) direct virus-induced injury is not the only possible cause for the lesions: (3) placental enteroviral infection occurred with placental pathology but the virus did not cross the organ as the newborn had no signs of infection.
(13) From the 130th day to the 3rd-5th day prepartum, an increase in the hormone levels was observed in both groups of ewes indicating a placentary contribution.