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  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 91 (1984), S. 0 
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary. Maternal serum levels of pregnancy-associated plasma protein A (PAPP-A), human placental lactogen (hPL) and schwangerschafts-protein 1 (SP1) were measured serially during the second and third trimesters in 753 women with a normal pregnancy when recruited during the second trimester. Thirty-seven pregnancies were complicated by pregnancy-related hypertension after 28 weeks gestation. Maternal levels of PAPP-A and SP1, and trends of levels in individual patients, could generally not be distinguished from those seen in patients with a normal pregnancy, and were unrelated to the time of onset of the disease, its severity or the occurrence of other complications with one exception, in which decreased levels of SP1 and hPL were seen. Mean levels of hPL were significantly lower (P〈0.05) at 35 weeks gestation. These data suggest that the measurement of the placental proteins examined here is of no value in the prediction of occurrence of pregnancy-related hypertension.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 89 (1982), S. 0 
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary. In a cross-sectional study circulating levels of antithrombins, antithrombin III1α-antitrypsin and α2-macroglobulin were measured in groups of 20 women before pregnancy, during each trimester and post partum. Blood levels of antithrombin III were signicantly lower, α1 antitrypsin higher and %aL2-macroglobulin no different when compared with those of the non-pregnant and puerperal states. These findings suggest that there may be not only an increase in total antithrombin production, but also a qualitative change in antithrombin‘activity’, the principal protein during pregnancy being α1-antitrypsin.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 87 (1980), S. 0 
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: A total of 914 blood samples was obtained from an unselected population of 400 women between 36 and 40 weeks gestation. Serum PP5 levels were measured by a sensitive radioimmunoassay. After ranking of PP5 levels and birth weight the value of serum PP5 in the diagnosis of intrauterine growth retardation was examined. The sensitivity, predictive value, and specificity of the test were 17.07, 16.66, and 90.25 per cent respectively; these results suggest that serum PP5 levels are less accurate than other biochemical parameters in the identification of fetal growth retardation in late pregnancy.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary. Circulating levels of four specific placental proteins, human chorionic gonadotrophin (hCG), Schwangerschafts protein 1 (SP1), placental protein 5 (PP5) and pregnancy-associated plasma protein A (PAPP-A), were measured in 31 patients with hydatidiform mole before treatment. Seven patients subsequently developed clinical chorio-carcinoma and three of them had pulmonary metastases. The estimations of hCG, PP5 and PAPP-A levels were found to be of no value in the prediction of malignant sequelae. Levels of SP1≥ 16.5 i.u./l were associated with a higher incidence of subsequent malignant disease (P 〈 0.05), the risk being at least nine times greater in these patients. The predictive value of high levels of SP1 was 35%, the specificity 45.8% and sensitivity 100%.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 87 (1980), S. 0 
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Adrenal-seminal-pituitary protein (ASP) was measured by radioimmunoassay in maternal serum and amniotic fluid samples obtained throughout pregnancy. Levels of ASP in maternal circulation showed a steady rise from a mean of 350 μg/1 at ten weeks gestation to 526 μg/1 at term. There was a further rise in ASP levels during labour. In contrast, a slight decline in amniotic fluid ASP was observed throughout pregnancy but the levels rose sharply during labour. These findings are in agreement with the hypothesis that ASP is closely associated with prosta-glandin physiology.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 91 (1984), S. 0 
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary. Maternal serum levels of human placental lactogen (hPL), schwangerschaftsprotein l (SP1) and pregnancy-associated plasma protein A (PAPP-A) were measured serially throughout pregnancy in 753 women who had a normal pregnancy when recruited during the second trimester. Thirty-three women were delivered of an infant with low birth-weight and with phenotypic features of intrauterine growth retardation (IUGR). The predictive value of an abnormal (〈 10th centile) hPL result (PVpos) in the identification of IUGR was between 28 and 32%, the sensitivity (36–54%) being greatest at 35 weeks gestation. The predictive value of a normal result (PVneg) was 87–96% at various stages of pregnancy, also greatest at 35 weeks gestation. For SP1, the sensitivity and predictive values were also greatest at 35 weeks gestation (PVpos, 20%; sensitivity, 32%; PVneg, 95%), but for PAPP-A these values were considerably less at all gestations. The trends in levels of hPL, SP1 and PAPP-A observed in individual patients with IUGR were not apparently related to any clinically recognizable feature of the pregnancy or the degree of fetal compromise, irrespective of whether the levels were within or outside the 80% confidence limits of the normal range or whether the levels fell from within the normal range. These data suggest that maternal hPL measurements are superior in the identification of IUGR in samples obtained at 30–35 weeks gestation.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 91 (1984), S. 0 
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary. Maternal serum levels of pregnancy-associated plasma protein-A (PAPP-A), human placental lactogen (hPL) and schwangerschafts-protein 1 (SP1) were measured serially during second and third trimester in 753 women with a normal pregnancy when they were recruited to the study. In 24 women spontaneous premature labour occurred before 37 completed weeks and these women had significantly lower mean levels of serum SP1 at 29–31 weeks and at 33–34 weeks gestation but similar mean levels of serum PAPP-A and hPL at all gestations compared with corresponding values in normal pregnancy. The predictive value of an abnormal SP1 result was 5.2% at 29–31 weeks and 10.3% at 33–34 weeks. Furthermore, trends of levels of the three placental proteins in individual patients were similar to those seen in normal pregnancy, and the trends were unrelated to the occurrence of other complications and the time of onset of labour. This study suggests that measurements of the three placental proteins are unlikely to be of any value in the prediction of spontaneous premature labour.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 90 (1983), S. 0 
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Springer
    Archives of gynecology and obstetrics 233 (1983), S. 211-215 
    ISSN: 1432-0711
    Schlagwort(e): Pregnancy associated plasma protein A ; Pregnancy protein ; Measurement of serum PAPP-A ; Normal pregnancy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Pregnancy associated plasma protein A (PAPP-A) was measured in maternal serum by electroimmunoassy in 414 women (with subsequent normal pregnancy outcome) during the 38th week of pregnancy. PAPP-A levels were examined in relation to maternal and fetal characteristics, revealing a statistically significant relationship with maternal weight, placental weight, fetal sex and gravidity. The correlation of PAPP-A levels to fetal sex and gravidity could not be explained by differences in placental or maternal weight. Mean levels of PAPP-A were also not significantly different in relation to fetal sex.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    ISSN: 1432-0711
    Schlagwort(e): Pregnancy-associated plasma protein A-PAPP-A-Radioimmunoassay
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A specific and sensitive radioimmunoassay for human pregnancy-associated plasma protein A (PAPPA-A) is described. This assay utilized tracer repurified by affinity chromatography on heparin-Sepharose. The most sensitive assay developed had a detection limit of 5 μg/l PAPP-A in serum, and this protein could not be detected in sera from non-pregnant subjects. During pregnancy, mean circulating levels rose from 0.6 mg/l at 6 weeks gestation to 110 mg/l at term, and PAPP-A was detected in 44 of 101 umbilical blood samples. The use of the anticoagulants EDTA and acid citrate dextrose resulted in significantly different results in the plasma compared to the corresponding serum sample. PAPP-A was also measured in amniotic fluid.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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