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Nematosomes in the human placenta
Placenta, 1985In this study, the ultrastructure of the human placental 'nematosome' or 'glomerular body' is described. It is usually found as electron-dense aggregates forming an inclusion 0.3 to 0.5 micron in diameter and of variable length, and occurs within cytotrophoblast cells in different configurations which include spirals, concentric rings, parallel arrays,
JONES, Carolyn J P, OCKLEFORD, C D
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Human Reproduction Update, 2020
BACKGROUND The placenta is the functional interface between the mother and the fetus during pregnancy, and a critical determinant of fetal growth and life-long health. In the first trimester, it develops under a low-oxygen environment, which is essential
A. Colson +3 more
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BACKGROUND The placenta is the functional interface between the mother and the fetus during pregnancy, and a critical determinant of fetal growth and life-long health. In the first trimester, it develops under a low-oxygen environment, which is essential
A. Colson +3 more
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Aminopeptidase A in human placenta
Biochimica et Biophysica Acta (BBA) - Enzymology, 1981Abstract Aminopeptidase A ( l -α-aspartyl( l -α-glutamyl)-peptide hydrolase, EC 3.4.11.7) was found in human placenta, partially purified from it and briefly characterized in comparison with the placental leucine aminopeptidase. The aminopeptidase A could be separated from leucine aminopeptidase after trypsin digestion followed by Sephacryl S-300 ...
S. Mizutani +4 more
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TRANSHYDROGENATION IN THE HUMAN PLACENTA
Acta Endocrinologica, 1966ABSTRACT Human placental 17β-oestradiol dehydrogenase exists in two electrophoretic forms which are either isozymes or components of a monomerpolymer system. Both forms utilize NAD+ and NADP+ as cofactor and 17β-oestradiol-3-sulfate and testosterone as substrate.
Robert D. Crist, James C. Warren
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Transthyretin and the human placenta
Placenta, 2013Since its discovery, transthyretin (TTR) has been regarded as an important hepatically derived protein carrier of thyroid hormones and retinol in blood. However, in more recent years it has been shown that TTR has other important functions. TTR is abundant in cerebrospinal fluid, where it may be involved in transport of thyroid hormones into the brain.
Kelly Landers +3 more
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Lipids, 1988
AbstractGangliosides extracted from human placenta were composed of four major components (G1–G4), which were purified by silica beads column chromatography. The structures of these gangliosides were analyzed by exoglycosidase treatments, 400 MHz proton magnetic resonance spectroscopy and gas chromatography‐mass spectrometry and were concluded to be as
Tadayuki Abe +6 more
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AbstractGangliosides extracted from human placenta were composed of four major components (G1–G4), which were purified by silica beads column chromatography. The structures of these gangliosides were analyzed by exoglycosidase treatments, 400 MHz proton magnetic resonance spectroscopy and gas chromatography‐mass spectrometry and were concluded to be as
Tadayuki Abe +6 more
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Arylsulphatases of human placenta
Clinica Chimica Acta, 1964Abstract It has been shown that human placenta contains arylsulphatases hydrolysing 2-hydroxy-5-nitrocatechol sulphate (NCS) as well as p -nitrophenyl sulphate (NPS). This indicates the presence of arylsulphatases A, B and C. Soluble arylsulphatases splitting NCS are found mostly in the extracts of acetone powders prepared from placenta, while the ...
J. Gniot, L.M. Działoszyński
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Composition of the human placenta
American Journal of Obstetrics and Gynecology, 1946Abstract The total lipid (phospholipid [cephalin, lecithin and sphingomyelin] free and combined cholesterol, cerebrosides and neutral fat) distribution in nine human placentas is reported. No great individual variations in the lipid pattern were noted. Of the total lipid, one-fourth was neutral fat.
J.P. Pratt +4 more
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Nature, 1969
SINCE their discovery1, lysosomes have been described in many tissues. Here I report the presence of lysosomes characterized by staining with acridine orange2,3 and assays of the concentration and latency of acid phosphatase in the “lysosomal” pellet, in human term placenta.
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SINCE their discovery1, lysosomes have been described in many tissues. Here I report the presence of lysosomes characterized by staining with acridine orange2,3 and assays of the concentration and latency of acid phosphatase in the “lysosomal” pellet, in human term placenta.
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The formation of progesterone by the human placenta
American Journal of Obstetrics and Gynecology, 1966Abstract The net synthesis of progesterone by human placental homogenates and isolated mitochondria has been described for the first time. The availability of possible blood borne precursors has been screened for in maternal and fetal sera extracts. There appears to be enough pregnenolone in fetal blood to act as one potential source of progesterone ...
Zoltan Petro +2 more
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