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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 41 (1963), S. 239-241 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Die Pathogenese der Anämie bei der Marmorknochenkrankheit ist nicht einheitlich. Bei schweren Formen ist die Klärung der Beteiligung der Milz — Verstärkung der Hämolyse oder Organ der extramedullären Erythropoese — von entscheidender therapeutischer Bedeutung. Dies war der Anlaß, bei zwei Kindern mit der malignen Form der Osteopetrose die Erythropoese mit59Fe zu untersuchen. Dabei ergab sich, daß eine mit der Untersuchungsmethodik faßbare Hämolyse nicht bestand. Die Milz zeigte aber eine „erythrogenetische Kurve“ im Gegensatz zum Knochenmark, bei dem die erythropoetische Aktivität stark vermindert war. Daher war bei diesen beiden Patienten die Vornahme einer Splenektomie kontraindiziert.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1076
    Keywords: Key words Pregnancy ; Diabetes mellitus ; Perinatal mortality ; Prenatal care ; Prematurity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The purpose of this study was to estimate the proportion of pregnancies with pregestational diabetes in Germany, to compare the outcome of these pregnancies to pregnancies in nondiabetic mothers and to identify risk factors for poor pregnancy outcomes in mothers with pregestational diabetes. Data of the “Perinatalerhebung Nordrhine” from 1988–1993 were analysed. The Perinatalerhebung is an ongoing quality assurance programme of prenatal and perinatal care in the region of North Rhine (South Western part of North Rhine-Westphalia). During the observation period a proportion of 93%–100% of the annual births in the region (n = ∼100000) were included in the study. Their data had been documented by the obstetricians in a standard multiple choice questionnaire. The outcome parameters perinatal mortality, macrosomia, prematurity, and malformations were analysed in relation to several defined explanatory variables. There were 2,402 births in mothers with pregestational diabetes (0.4% of all births). The proportions of poor pregnancy outcomes in women with pregestational diabetes were 2.8% for perinatal mortality, 27.6% for macrosomia, 21.1% for prematurity and 2.1% for malformations . The respective relative risks compared to the non diabetic mothers were 4.3 (95% CI 3.4–5.5) for perinatal mortality, 3.1 (95% CI 2.9–3.3) for macrosomia, 2.7 (95% CI 2.5–2.9) for prematurity and 1.7 (95% CI 1.3–2.3) for malformations . The main risk factor for perinatal mortality in children of diabetic mothers after adjustment for maternal smoking, ethnicity, parents' professional achievement, type of obstetric hospital, and maternal age was substandard use of prenatal care. Conclusions The prevalence of births from mothers with pregestational diabetes and their pregnancy outcomes were similar to those in other Western countries. The standard for non-diabetic mothers has not been reached yet. Further improvements may be achieved if all diabetic women are convinced to use the standard prenatal care facilities throughout pregnancy.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 75 (1954), S. 27-36 
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Eingehende Darstellung der Diagnose und bisher bekannten Bedeutung der Alderschen Granulationsanomalie der Leukocyten an Hand zweier neuer Beobachtungen derselben bei Dysostosis multiplex (Pfaundler-Hurlersche Krankheit, gargoylism). Besonders auffällig erscheint der Befund der Alder-Anomalie im Zusammenhang mit ungewöhnlichen röntgenologischen Hüftbefunden. Auf den besonderen Wert der Anomalie als Früh- oder Detektorsymptom wird hingewiesen.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 88 (1963), S. 516-530 
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Es wird über einen angeborenen kompletten Verschluß des Pylorus bei einem Neugeborenen berichtet. Es ist dies die erste in der deutschen Literatur mitgeteilte Beobachtung, die erfolgreich operiert worden ist. Das Zustandekommen derartiger angeborener Verschlüsse im Bereiche des Pylorus wird, ebenso erörtert wie die Klinik und Behandlung derselben. Alle bisher in der Weltliteratur mitgeteilten Beobachtungen wurden erfaßt.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Beagles continuously exposed to high 90Sr concentrations developed a myeloproliferative syndrome (MPS)3. Several further cases of MPS were observed subsequently, including two of myelomonocytic leukaemia, and studies were undertaken to develop a canine model to aid studies of the aetiology, ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 79 (1957), S. 158-164 
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Die Diagnostik von Duodenalverschlüssen kompletter oder partieller Art beim Neugeborenen wird unter besonderer Berücksichtigung des Röntgenverfahrens dargestellt und an Hand zweier operativ geheilter Fälle auf die äußeren Duodenalstenosen hingewiesen. Der Wert einfacher Übersichtsaufnahmen des Abdomens wird betont; der Kontrastmitteleinlauf gibt Hinweise auf allfällige Rotationsanomalien.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 80 (1957), S. 245-256 
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung An Hand eines durch Operation geheilten 20 Monate alten Mädchens mit angeborener Oesophagotrachealfistel ohne Oesophagusatresie wird das Krankheitsbild dargestellt. Es handelt sich dabei um den ersten derartigen Fall in der deutschsprachigen Literatur. Pathognomonisch für die Verbindung zwischen Luft- und Speisewegen ist die Trias geblähtes Abdomen, rezidivierende Bronchopneumonien und durch Flüssigkeitsaufnahme provozierbare Hustenattacken. Die exakte Lokalisation der Fistel kann röntgenologisch oder endoskopisch erfolgen. Zusammenstellung der bisher operierten Fälle und Erörterung der Differentialdiagnose.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Oecologia 43 (1979), S. 365-371 
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A simple mathematical model is analyzed which describes the behaviour of a population under the influence of viability and fertility as well as carrying capacity and competition by another species. One locus with two alleles determining viability, fertility, and carrying capacity is considered. Throughout the analysis absolute rather than relative numbers are used. The following results have been obtained: 1. The species producing more zygotes wins the competition. 2. Absolute numbers must be used for viability and fertility in theoretical considerations, because the outcome of competition may be changed by using different absolute numbers of the same relation. 3. Differences in viability are amplified by limiting the number of individuals. 4. Differences in every parameter can be compensated by any other parameter.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Oecologia 87 (1991), S. 506-513 
    ISSN: 1432-1939
    Keywords: Life histories ; Interspecific hybrids ; Daphnia ; Lakes ; Clones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Life-history variation was examined among members of theDaphnia longispina group, which consists ofD. galeata, D. hyalina, D. cucullata, and hybrids. Factorial experiments were conducted at two temperatures (14° and 20° C) and two food concentrations (0.2 and 1.0 mg Cl−1). Differences in life-history features (size at maturity, age at first reproduction, size of first clutch, offspring size in first clutch) under the different environmental conditions were assessed among eightDaphnia clones, which represented members of this species complex. Significant differences between parentals and hybrids for most life-history features were observed under various treatments; generally, hybrid clones showed intermediate life-history traits when compared with parentals. When comparisons were made among clones within a given species (i.e.D. galeata, D. galeata xcucullata, D. cucullata), clonal differences were also noted for certain life-history traits. The data are discussed with reference to the formation and maintenance of hybrid species complexes in nature.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Genetica 72 (1987), S. 151-159 
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract It is generally believed that recombination by sexual reproduction is unfavourable in constant environments but is of adaptive value under changing environmental conditions. To test this theory, experimental populations of yeast (Saccharomyces cerevisiae) were set up and maintained at different levels of environmental heterogeneity. Recombination was estimated by determining sporulation rates. Sporulation rates first increased in populations living in highly variable environments, but after some time began to decrease. The decrease started last and was slowest in populations which were maintained under the same conditions for a sufficiently long time, to allow some adaptation of the gene pool to the respective environment. Patterns of genotypic variability could not be interpreted in such simple terms, but there was a statistically significant correlation between sporulation rate and genotypic variability. This correlation is to be expected because recombination generates genotypic variability. Summing up, recombination by sexual reproduction is advantageous in changing environments if the population can track the changes in the environment by changing its genotypic structure.
    Type of Medium: Electronic Resource
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