Quantitative Untersuchungen der menschlichen Plazenta bei normaler Schwangerschaft und EPH-Gestose in Beziehung zum HPL-Serumspiegel im letzten Trimenon der Schwangerschaft
Abstract:Thirty-two human placentas from normal and from pregnancies complicated by preeclampsia in last third of gestation were morphologically and morphometrically examined and correlated with human placenta-lactogen blood-level. HPL was determined by the radio-immunoassay (Carbon-Dextran-method). HPL-values, placenta villous surface, the weight of the newborn and placenta showed significant correlation. The placentas were classified according to the morphologic degree of severity (placenta-morphological-index) and c… Show more
“…4), we Interpret this reduction of mature syncytium äs a reduction in functional syncytium for placental hormone synthesis. Whereas these correlations are already known for placental weight and placental villous surface [7,11] our results correborate the "decreased function of endocrine trophoblast quality" äs postulated by BECKER [1], Linear regression analysis yields a correlation coefficient of r -0.52 between antepartum maternal HPL values and the proportion of mature syncytium [23]. This further demonstrates the quantitative relation between "functional" syncytium and hormone synthesis.…”
Section: Resultssupporting
confidence: 79%
“…Identified are marginal (l, 2, 3, 5, 6,10,11,13,14,15), lateral[4,7,9,12] and central(8) sections äs well äs further subdivision in subchorial. intermediary, and basal zones.…”
Material and methodsWe examined a total of 239 placentas. The infants belonging to 222 of these placentas were classified by neonatologists [3,15] into 21 eutrophic term infants from normal pregnancies (normal contrpls); 82 eutrophic (appropriate for gestational
“…4), we Interpret this reduction of mature syncytium äs a reduction in functional syncytium for placental hormone synthesis. Whereas these correlations are already known for placental weight and placental villous surface [7,11] our results correborate the "decreased function of endocrine trophoblast quality" äs postulated by BECKER [1], Linear regression analysis yields a correlation coefficient of r -0.52 between antepartum maternal HPL values and the proportion of mature syncytium [23]. This further demonstrates the quantitative relation between "functional" syncytium and hormone synthesis.…”
Section: Resultssupporting
confidence: 79%
“…Identified are marginal (l, 2, 3, 5, 6,10,11,13,14,15), lateral[4,7,9,12] and central(8) sections äs well äs further subdivision in subchorial. intermediary, and basal zones.…”
Material and methodsWe examined a total of 239 placentas. The infants belonging to 222 of these placentas were classified by neonatologists [3,15] into 21 eutrophic term infants from normal pregnancies (normal contrpls); 82 eutrophic (appropriate for gestational
Using the principle that the human placenta is anatomically composed of fetomaternal flow units, we developed a computer-assisted measurement programme capable of recording complex histometric data about the characteristics of the maturation and structural differentiation of resorption villi, as well as subjecting the results to simultaneous statistical processing. Using 42 placentas obtained after normal pregnancies, reference values were derived for the five primary geometrical and six further arithmetical parameters. From these findings, we also calculated the total resorption villi surface area, the proportion of this surface area occupied by epithelial plates, and the resorption-villi surface are relative to the birth weight of the child. Our findings are compared with other available results, and the reasons for discrepancies between previously published measurements are discussed.
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