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  • 1
    ISSN: 1432-0584
    Keywords: Haemophilia A ; factor VIII-antigen ; v. Willebrand-Jürgens disease ; carrier state for haemophilia A ; factor-VIII clotting activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Difficulties in the detection of haemophilia A carriers by the determination of the ratio factor VIII coagulation activity to factor VIII antigen concentration are shown in part one of our investigations. The second part evaluates methodical parameters of the quantitative immunoelectrophoretic technique. According to our results reliable data can only be obtained under the following conditions: 1. At least three determinations of each sample are required and the mean value should be used as the final result 2. Each gel plate should be calibrated separately 3. The calibration line should include values less than 100%. Factor VIII concentrates are not suitable for determination of the calibration curve, as higher dilution results in lower calculated concentration of the undiluted concentrate. Storage of pooled normal plasma at −25° C is possible without significant loss of antigen concentration over 5 months. However, plasma samples of a single person show an unpredictable variation in the antigen concentration during storage over the same time.
    Notes: Zusammenfassung Im ersten Teil der Arbeit werden die Schwierigkeiten des Konduktorinnen-Nachweises der Hämophilie A durch die Bestimmung des Quotienten aus Gerinnungsaktivität und Konzentration des Faktor-VIII-assoziierten Antigens gezeigt. Danach wird der Einfluß methodischer Fehlerquellen auf die Bestimmung des Faktor-VIII-assoziierten Antigens beschrieben. Es zeigt sich, daß gleichzeitige Mehrfachbestimmungen, Eichung jeder Gelplatte und Verdünnung der Plasmen unter eine Konzentration von 100% erforderlich sind. Faktor-VIII-Konzentrate ergeben dagegen bei Verdünnung eine falsch niedrige errechnete Ausgangskonzentration. Die Lagerung gepoolter Normalspenderplasmen bei −25° C ist über fünf Monate ohne Konzentrationsverlust möglich, Einzelspenderplasmen zeigen dagegen innerhalb des gleichen Zeitraums Konzentrationsschwankungen über den methodischen Streubereich hinaus.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A method is described for the dissociation of guinea pig lung and mesentery into their component cells. The method comprises incubation of the tissues with the enzyme pronase in Ca++- and Mg++-free saline followed by mechanical dispersion and yields on average 3–8% free mast cells. These cells are morphologically intact and viable. They retain an active sensitization or can be passively sensitized. The levels of cAMP and cGMP in the whole cell suspension respond to catecholamine, histamine or cholinergic stimulation in a way similar to that observed in the corresponding undispersed tissue. Although the separation of guinea pig mast cells from other cells proved to be more difficult than the purification of rat mast cells, an inrichment of greater than 50% has been achieved. The mast cells isolated by this method proliferate in vitro and have been cultured successfully for several months.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 33 (1977), S. 23-24 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Inhibition constants of several formamidines, their corresponding formanilides and other representatives of compounds derived from aniline, such as phenylureas, N-phenyl-carbamates and acylanilides, were determined for rat liver monoamine oxidase. The reversability of the inhibition and the lack of correlation between inhibition potencies and toxicities of the compounds tested add to the opinion that MAO inhibition is not a prominent factor in chlordimeform poisoning.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 125 (1977), S. 225-225 
    ISSN: 1432-1076
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1076
    Keywords: Acatalasia ; Cerebro-hepato-renal syndrome ; Cirrhosis ; Hemochromatosis ; Cytochrome abnormalities ; Peroxisomes ; Mitochondria ; Oxidative phosphorylation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A patient with a cerebro-hepato-renal syndrome was investigated. The visceral manifestations were those of the Zellweger syndrome (ZS); however, the child exhibited muscular hypertonia and survived into the 2nd year of life. Ultramicroscopically, hepatocytes were lacking peroxisomes, but, contrary to findings in one patient with ZS [2], contained smooth endoplasmic reticulum. No catalase was found by histochemistry or spectroscopy. Mitochondria showed normal succinate and glutamate respiration, and normal coupling of respiration to the phosphorylation potential. The cytochrome (cyt) content was diminished to one-third with an abnormally inversed redox patterns of the respiratory chain in the controlled state, cyt b being 5%, cyt c 23% reduced. The oxygen affinity of cyt a 3 was normal. These findings exclude a defect in the nonheme iron protein region of the respiratory chain as described in ZS [2], but point to a functional abnormality of cyt b in our patient.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 88 (1977), S. 157-184 
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die vorliegende Arbeit analysiert die bösartigen Tumoren eines großen allgemeinen Sektionsgutes im Hinblick auf die Häufigkeit, Alters- und Geschlechtsverteilung, Lokalisation und histologische Klassifikation. Sie umfaßt einen Zeitraum von 12 Jahren. Die Neubildungen wurden zunächst verschiedenen Organsystemen zugeordnet, dann den einzelnen Organen; schließlich erfolgte bei den wichtigsten Tumoren eine histologische Differenzierung. Von 23 338 Verstorbenen der Jahre 1960–1971 wurden 17 052 obduziert. Die Sektionsquote betrug im Durchschnitt der 12 Jahre 73,1%. Ausgewertet wurden jedoch nur 15 384 Sektionen (65,9%). Insgesamt 4911 bösartige Neubildungen stellten 31,9% der ausgewerteten Fälle dar. Der männliche Anteil übertraf geringgradig mit 2508 (51,1%) den weiblichen Anteil. Über 60% aller bösartigen Neubildungen (BN) fanden wir bei Verstorbenen im Alter von 60–79 Jahren. Beim Vergleich der Zeiträume 1960–1965 und 1966–1971 ergab sich eine Zunahme der malignen Tumoren um 1,7%. Die getrenntgeschlechtliche Auswertung bestätigte dieses Ergebnis jedoch nur bei den Männern, während bei den Frauen nur ein geringfügiger Anstieg zu beobachten war. Die meisten bösartigen Neubildungen mußten dem Verdauungstrakt (26,2%) vor dem Urogenitaltrakt (23,4%) und dem Respirationstrakt (18,7%) zugeordnet werden. Bei den Männern standen allerdings die BN des Respirationstraktes (30,3%) an erster Stelle vor den Malignomen des Verdauungstraktes (27,4%); bei den Frauen fanden sich die meisten BN im Urogenitaltrakt (29,0%). Die BN des Respirationstraktes sind bei den Männern signifikant häufiger als bei den Frauen; beim weiblichen Geschlecht dominieren die Malignome des Urogenitaltraktes und der Hautanhangsgebilde durch die Häufigkeit des Mammacarcinoms. Im Verlauf der 12 Jahre nahmen die BN des Verdauungstraktes bei den Männern im Verhältnis zu der Gesamttumorzahl des untersuchten Obduktionsgutes signifikant ab, während die Malignome des Respirationstraktes und des Urogenitaltraktes beim Vergleich mit der Anzahl der Sektionen signifikant anstiegen. An erster Stelle der bösartigen Neubildungen der einzelnen Organe standen bei den Männern die Tumoren der Bronchien und der Lunge, gefolgt von denen des Magens; bei den Frauen die Tumoren des Uterus vor denen der Mamma und des Magens. Die Auswertung der einzelnen Organe erbrachte bei den Männern eine signifikante Zunahme der BN der Bronchien und der Lungen sowie der Harnblase beim Vergleich mit der Anzahl der Sektionen, bei der Harnblase darüber hinaus auch im Vergleich zur Gesamttumorzahl der Männer. Für die Frauen ergab sich eine signifikante Zunahme der BN des Skeletsystems einschließlich der Hämoblastosen sowie eine signifikante Abnahme der BN des Gehirns nur im Verhältnis zu den Tumorzahlen des weiblichen Geschlechts. Verallgemeinernde Schlüsse sind aus den dargestellten Verhältnissen sicher jedoch nicht zu ziehen, da der untersuchte Zeitraum von 12 Jahren zu klein ist und das Krankengut aus einem sehr begrenzten Einzugsgebiet stammt; zudem können örtliche Veränderungen in der Zusammensetzung der medizinischen Einrichtungen und Krankenstationen das Bild retrospektiv unkontrollierbar beeinflußt haben. Für die histologische Klassifizierung der wichtigsten Tumoren wurden nur die routinemäßig durchgeführten mikroskopischen Untersuchungen herangezogen. Auf eine weitergehende histologische Differenzierung und seltenere Tumorformen wurde der Übersicht wegen verzichtet.
    Notes: Summary The present study taken over a 12-year time period analyzes malignant tumors in a large number of autopsies, with specific consideration of the frequency and location, age and sex group distribution, and histologic classification of the tumors. The tumors were first evaluated in terms of specific organs and organ systems and were then histologically classified. On a total of 23338 subjects who died between the years 1960 and 1971, 17052 autopsies were carried out (73.1%) and only 15384 (65.9%) of these were evaluated for our study. Altogether we located 4911 cases of MT, i.e., 31.9% of the evaluated autopsies. The number of MT in the males slightly exceeded that in the females (2508 [51.1%] MT and 2403 [48.9%] MT, respectively.) We calculated over 60% of the MT to be in the 7th and 8th age groups. By comparing the two time periods (1960–1965 and 1966–1971) we calculated a significant increase in the MT rate by 1.7%. This increase was found mainly to effect the males (the female group showed only a slight increase). The greatest number of MT were located in the digestive system with an MT rate of 26.2%; next came the urogenital system (23.4%) and then the respiratory system (18.7%). The respiratory system took first position of importance in the males with an MT rate of 30.3% followed by the digestive system with 27.4%. The urogenital system dominated in the females with a rate of 29.0%. The rate of MT of the respiratory system was significantly higher in the males. The MT rate in the urogenital system and the skin and adnexa was significantly higher in the females, especially with respect to carcinoma of the mammary glands. As for the males, we observed during the 12-year study period that in relation to the total number of MT, the MT of the digestive system decreased significantly, while significant increases in relation to the evaluated autopsies occurred in the respiratory and urogenital systems. A significant increase in the MT of the bone marrow was calculated in the females, both with respect to the total number of tumors and the evaluated autopsies. The highest organ MT rates were calculated for the bronchi and lungs and stomach in the males while the uterus, mammary glands, and stomach—in this order—showed highest MT rates in the females. Significant increases in the organ MT rates for the males were calculated both in the bronchi and lungs and the urinary bladder, the evaluated autopsies being taken into consideration. Such an increase was also found in the bladder, when compared with the MT. Significant MT increases in the females were calculated in the skeletal system and hemoblastosis with respect to both the evaluated autopsies and the MT while a significant decrease was calculated in the MT of the brain with respect to the number of MT in the females only. The above results cannot be generalized because the time period was too short, the autopsies were only selective, and the area of our observations was rather limited. Apart from these factors, our results were possibly influenced by the establishment of new medical departments in the hospital during the study period. The histologic classification of the important tumors was accomplished by routine microscopic experiments only. In order to obtain a good overall survey no special stains were carried out for the rare tumors. One of our basic aims was to outline these results in diagrams and graphs.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3792-3798 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal and Molecular Structure of O,O′-Diethyl 5-tert-ButyldithioisophthalateThe structure of the title compound (4) has been determined from X-ray data by means of direct methods and refined to R=0.057. 4 crystallizes in the space group P1¯.  -  The molecule is approximately planar; the interplanar angles between the plane of the benzene ring and those of the RO—CS-groups being 5.3° and 7.6°, respectively. The C=S bond length of 1.631 ± 0.002 Å points to a moderate double bond character.
    Notes: Die Struktur der Titelsubstanz (4) wurde röntgenographisch mit Hilfe der Direktmethode bestimmt und bis zu einem R von 0.057 verfeinert. 4 kristallisiert in der Raumgruppe P1¯.  -  Das Molekül ist fast eben gebaut; die Interplanarwinkel zwischen der Ebene des Benzolrings und denen der RO—CS-Gruppen betragen 5.3° und 7.6°. Die C=S-Bindungslänge von 1.631 ± 0.002 Å läßt auf einen mäßig ausgeprägten Doppelbindungscharakter schließen.
    Additional Material: 2 Tab.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 1159-1166 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Twisted Oxalic Acid Derivatives The Crystal and Molecular Structure of N,N,N′,N′-Tetramethyloxamide and -monothiooxamideThe structures of the title compounds (2 and 3) have been determined from X-ray data, and refined to R = 0.065 (2) and 0.057 (3) respectively. 2 crystallizes in the space group C2/c, 3 in the space group P21/c. - In the crystal 2 exhibits a configuration in which the two halves of the molecule are twisted by 71.4°. This angle amounts to 87.4° in 3.
    Notes: Die Strukturen der Titelsubstanzen (2 und 3) wurden röntgenographisch bestimmt und bis zu R-Werten von 0.065 (2) bzw. 0.057 (3) verfeinert. 2 kristallisiert in der Raumgruppe C2/c, 3 in der Raumgruppe P21/c. - 2 liegt im Kristall in einer Konfiguration vor, bei der die beiden Molekülhälften um 71.4° gegeneinander verdrillt sind; bei 3 beträgt dieser Winkel 87.4°.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 792-797 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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