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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 33 (1961), S. 1767-1770 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Eine früher von den Verff. beschriebene Methode, mit der man staubbeladene Membranfilter für die elektronenoptische Untersuchung präparieren kann, wurde für weitere Messungen des Schwebestaubes in Bergwerken verwandt. Der durch das Schießen entwickelte Staub ließ hohe Staubkonzentrationen erkennen und zeigte ein enges Teilchenspektrum. Außerdem wurden mit der Membranfiltermethode Untersuchungen der atmosphärischen Luftverunreinigungen durchgeführt. Die in Düsseldorf entnommenen Staubproben wiesen vor allem Teilchen mit einer Korngröße unter 0,1Μ auf, während in Bochum vor allem Rußpartikeln in den Vordergrund traten.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Growth and change 4 (1973), S. 0 
    ISSN: 1468-2257
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Economics
    Type of Medium: Electronic Resource
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  • 4
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    Unknown
    Chapel Hill, N.C. : Periodicals Archive Online (PAO)
    Social Forces. 52:4 (1974:June) 517 
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 75 (1970), S. 14-22 
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Unter bestimmten Voraussetzungen wird nach intratrachealer Injektion Benzo(a)pyren mit dem Blut abtransportiert und in der Leber abgebaut. Außerdem erfolgt ein Abbau in der Lunge selbst. Dieser Abbau scheint an einen bestimmten Zelltypus, die Alveolar-Makrophagen gebunden zu sein, worauf die in vitro-Untersuchungen hinweisen.
    Notes: Summary After intratracheal injection under special conditions benzo(a)pyrene is eliminated by the blood stream and metabolized principally in the liver; some, however, is metabolized in the lungs as well, apparently by the alveolar macrophage.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 28 (1972), S. 1-7 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Blut gerinnt, wenn das Gerinnungsferment Thrombin aktiviert wird und Fibrinogen in Fibrin umwandelt. Störungen der Thrombin- oder Fibrinbildung können Bluterkrankheiten verursachen. Die Ursache angeborener Bluterkrankheiten liegt entweder in der quantitativen Verminderung oder in qualitativen Strukturanomalien eines Gerinnungsfaktors. Immunologische Methoden im Verein mit einer beginnenden, direkten Strukturabklärung zeigten für das Fibrinogen überzeugend, dass beide Möglichkeiten vorkommen. Unterschiedliche Funktionsausfälle von Fibrinogen lassen vermuten, dass verschiedenartigen Strukturanomalien für Störungen der Substrateigenschaften gegenüber Thrombin, der Polymerisierung oder der Fibrinstabilisierung verantwortlich sind. Ähnliche Untersuchungen an den Faktoren II, VII, VIII, IX, X und XIII zeigen, dass wahrscheinlich die Mehrzahl der bekannten Bluterkrankheiten durch Strukturanomalien verursacht werden. Die eingehende Untersuchung solcher Strukturdefekte wird zukünftig um so interessanter und bedeutungsvoller werden, je besser die Struktur und Funktion der normalen Gerinnungsfaktoren bekannt sind.
    Notes: Summary Blood coagulation reflects, the complex biological system resulting in the formation of thrombin and the subsequent conversion of fibrinogen into fibrin. Disorders of either thrombin or fibrin formation may cause bleeding states. Congential hemorrhagic disorders are characterized by either reduction of a coagulation factor or impairment of its functional capacity by structural aberrations. Immunological studies and direct molecular evaluation of fibrinogen demonstrate that both types of abnormalities occur. Functional evaluation of abnormal fibrinogens suggests that many different structural variants exist and variably influence interaction with thrombin, fibrin polymerization and fibrin ‘stabilization’. Similar studies performed on factors II, VII, VIII, IX, X and XIII indicate that qualitative abnormalities are more frequent than ‘true’ deficiency states. Such molecular abnormalities will become increasingly interesting and important as the biochemistry of normal coagulation progresses.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 28 (1972), S. 193-193 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Hämsynthetase (HS)-Aktivität zirkulierender Retikulozyten und Erythrozyten von Normalspendern und Patienten mit Thalassämie wurde in vitro bestimmt. HS war normal oder erhöht bei Thalassämie. Jugendliche, über das Stadium des Retikulozyten hinaus gereifte Erythrozyten enthalten wahrscheinlich noch einen signifikanten Anteil der im peripheren Blut messbaren HS-Aktivität.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 266 (1970), S. 208-222 
    ISSN: 1432-1912
    Keywords: Anaphylatoxin ; Anaphylaxis ; Histamine ; Catecholamines ; β-Adrenergic Blockade ; Anaphylatoxin ; Anaphylaxie ; Histamin ; Katechol amine ; β-adrenergische Blockade
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 1. In the heart lung preparation (HLP) of the guinea pig 2.5 ml rat serum anaphylatoxin (AT) released approximately ten times less histamine than was released by 5 mg ovalbumin in the sensitized HLP. In intact animals the plasma histamine increase caused by 5 ml/kg AT was not significantly different from that caused by 10 mg/kg ovalbumin. It is supposed that in AT shock extrapulmonary sources contribute to plasma histamine more than in anaphylactic shock. 2. Mepyramine maleate (40 μg/ml blood) did not significantly reduce the bronchospasm caused by AT in HLP except when a very high AT dose (0.3 ml/ml) was given. In the intact animal, mepyramine lowered the AT-induced bronchospasm by 50–65%. This effect of mepyramine is completely abolished byβ-adrenoceptive receptor blockade. 3. It is concluded that the prevalence of histamine effects in AT shock in vivo, as documented by the life saving effect of antihistamines, is due to 2 facts: influx of histamine from the organs other than the lung, and preferential antagonism by catecholamines of such shock mechanisms which are not based on histamine release.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1912
    Keywords: Anaphylaxis ; Histamine ; Antihistaminics ; Cateoholamines ; Pulmonary Circulation ; Bronchospasm ; Anaphylaxie ; Histamin ; Antihistaminica ; Katecholamine ; Lungenkreislauf ; Bronchospasmus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 1. In the guinea pig heart-lung-preparation (HLP) anaphylactic bronchospasm was not greatly affected by mepyramine (2–40 μg/ml blood), adrenaline (0.1 and 1 μg/ml), noradrenaline (0.1 μg/ml) or papaverine (100 μg/ml) but was completely abolished by combining mepyramine with the lower dose of adrenaline. A partial antagonism was achieved by the combined action of mepyramine and papaverine which became complete when adrenaline was added. 2. Bronchospasm due to histamine was completely prevented by mepyramine, but only partially antagonized by both adrenaline doses used. 3. The increase of pulmonary vascular resistance in anaphylaxis was not inhibited by the highest tolerated amounts of mepyramine or papaverine, no matter whether the drugs were given alone or in combination. Adrenaline, in contrast to noradrenaline, was partially effective at the lower dose (0.1 μg/ml). The higher concentration did not act more strongly. It became fully effective when mepyramine was added either alone or combined with papaverine. 4. The increase of pulmonary vascular resistance induced by histamine was strongly and significantly antagonized by mepyramine alone as well as by the lower concentration of adrenaline (0.1 μg/ml). Noradrenaline had no significant effect in either amount given (0.1 and 1 μg/ml). 5. Antigen increased heart rate in sensitized HLPs, probably due to histamine release. This effect was resistant to mepyramine. 6. The present findings are discussed a) with respect to the refractoriness of the anaphylactic bronchospasm to mepyramine, an effect displayed in isolated lung preparations but not in intact animals. b) with respect to the mechanism of the so-called protracted shock which is mainly due to heart failure.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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