Fetal Membranes
Mostrando 25-36 de 104 artigos, teses e dissertações.
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25. Phosphatidylinositol-specific Phospholipase C in Fetal Membranes and Uterine Decidua
An assay procedure was developed in which phosphatidyl[2-3H]inositol was employed as substrate for the measurement of phosphatidylinositol-specific phospholipase C activity. Employing this assay, phosphatidylinositol-specific phospholipase C activity in human fetal membranes and uterine decidua was identified and characterized. The specific activity of this
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26. THE PLACENTA AND FETAL MEMBRANES
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27. Development of glucagon sensitivity in neonatal rat liver.
The ontogenesis of the hepatic glucagon-sensitive adenylate cyclase system has been studied in the rat. With a partially purified liver membrane preparation, fetal adenylate cyclase was less responsive to glucagon than the enzyme from neonatal or adult livers. Similar results were obtained in gently prepared liver homogenates, suggesting that destruction of
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28. Development of Intestinal Adenyl Cyclase and Its Response to Cholera Enterotoxin
Adenyl cyclase activity in intestinal membranes has been studied during development in the rabbit fetus from fetal day 17 to 10 days postnatally and in the human fetus from the 10th to the 17th wk of gestation. In the rabbit, the enzyme was already present by fetal day 17 and showed a fourfold peak rise in specific activity by 22 days. By 28 days, the specif
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29. Lipopolysaccharide induces nitric oxide synthase expression and platelet-activating factor increases nitric oxide production in human fetal membranes in culture
BioMed Central.
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30. Tissue-specific expression and developmental regulation of the rat apolipoprotein B gene.
Expression of the apolipoprotein B (apoB) gene was examined in a variety of fetal, neonatal, and adult rat tissues by probing RNA blots with a cloned rat apoB cDNA. Among 10 adult male tissues surveyed, small intestine had the highest concentration of apoB mRNA. Its abundance in liver and adrenal gland was 40% and 0.5%, respectively, of that in small bowel,
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31. Sterol synthesis and low density lipoprotein clearance in vivo in the pregnant rat, placenta, and fetus. Sources for tissue cholesterol during fetal development.
Whereas the greatest relative increase in body mass occurs during the third trimester of fetal life, the source of the cholesterol that supports this growth is uncertain. These studies used [3H]water and 125I-cellobiose-labeled low density lipoproteins to quantitate absolute rates of cholesterol acquisition in vivo by the fetus of the rat. Preliminary studie
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32. Impaired elastin fiber assembly related to reduced 67-kD elastin-binding protein in fetal lamb ductus arteriosus and in cultured aortic smooth muscle cells treated with chondroitin sulfate.
In the fetal ductus arteriosus (DA) disruption in the assembly of elastin fibers is associated with intimal thickening and we previously reported that fetal lamb DA smooth muscle cells incubated with endothelial conditioned medium produce two-fold more chondroitin sulfate (CS) compared with aorta (Ao) cells (Boudreau, N., and M. Rabinovitch. 1991. Lab. Inves
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33. Detection of epidermal growth factor-urogastrone and its receptor during fetal mouse development*
Using both a radioimmunoassay and a radioreceptor assay, we have estimated the content of mouse epidermal growth factor-urogastrone (EGF-URO) in fetal mice at 11½ to 17½ days of gestation. Concurrently, the amount of specific EGF-URO receptor binding was determined in crude membrane fractions from the embryos. EGF-URO receptor binding is readily detected i
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34. Androgen regulation of epidermal growth factor receptor binding activity during fetal rabbit lung development.
Fetal lung development progresses in a sex-specific manner with male fetuses exhibiting delayed maturation. Androgens, both exogenous and endogenous, inhibit while epidermal growth factor (EGF) enhances fetal lung development. We hypothesized that one mechanism responsible for the delay in male fetal lung development is an androgen-induced delay in EGF recep
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35. The effects of continuous drainage of fetal fluids on salt and water balance in fetal sheep.
1. In nine chronically catheterized fetuses in which all lung liquid was drained continuously from the time of surgery, the effects of continuous drainage of fetal urine for 1 week on fetal renal function, lung liquid production and salt and water balance were studied. Fetal wellbeing, as judged by fetal growth, urinary osmolality, blood gas status, arterial
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36. Aquaporin-1 water channel protein in lung: ontogeny, steroid-induced expression, and distribution in rat.
At birth water is rapidly reabsorbed from the distal lung in preparation for alveolar gas exchange. To investigate a potential role for the AQP1 water channel in development, lung membranes from fetal and perinatal rats were analyzed by immunoblot. First expression of AQP1 was noted in fetal rat lung at E19 (19th day of the 21-day gestation). The level of AQ