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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Inflammation research 7 (1977), S. 469-472 
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of a variety of particulate irritants on the prostaglandin content, protein concentration and the leucocyte counts in the exudate of implanted inert sponges and on the development of paw oedema in the rat have been studied. Variations in prostaglandin accumulation and leucocyte migration were not related but irritants causing a longstanding paw eedema increased both parameters.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Inflammation research 6 (1976), S. 701-704 
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In exudates of implanted sponges in rats, made thrombocytopenic by the administration of anti-platelet serum, there are significant reductions in the platelet and leucocyte counts and of the content of prostaglandin-like activity. It is concluded that platelets migrate into the developing sponge exudates, are the source of the prostaglandins and interact with complement to cause leucocyte migration. In normal animals the administration of indomethacin and sodium salicylate cause similar effects to thrombocytopenia whereas the injection of human plasma fraction affects only the leucocyte migration. One of the sites of the anti-inflammatory action of conventional non-steroidal drugs may be concerned with the migration of platelets into inflammatory lesions.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Inflammation research 5 (1975), S. 318-321 
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A substance of low molecular weight, below 1000 daltons, has been separated from normal human plasma by a stepwise process involving ultrafiltration followed by column chromatography. The spectrum of anti-inflammatory activity of the active fraction in a variety of animal models shows that it is most active in situations in which the emigration of circulating leucocytes plays the more prominent role. The fraction exerts a selective action on the release of chemotactic factors after the activation in vitro of the complement cascade by the alternate but not by the classical pathway. The existence of the plasma fraction raises several interesting queries. Is it part of one of the naturally occurring control mechanisms in inflammation? What is its relevance to human disease, e.g., rheumatoid arthritis, and do conventional antirheumatic drugs interact with it? Does its lack of activity against chemical mediators of inflammation and their generating systems throw any light on the importance of these materials in inflammatory reactions?
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Inflammation research 9 (1979), S. 483-487 
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of aspirin, salicylic acid and gentisic acid on the paw swellings in the arachidonic acid-potentiated and in the conventional carrageenan-induced oedema tests as well as on the content of prostaglandin-like activity and leucocyte migration in the exudate of inert implanted sponges in the rat have been studied. It is concluded that aspirin exerts two separate inhibitory effects on prostaglandin formation in vivo, a rapid action of the intact molecule on easily accessible tissues and a later action due to its metabolic conversion to salicylic acid. Salicylic acid inhibits prostaglandin biosynthesis in vivo as the salicylate ion itself and there is no formation of a subsequent ‘active’ metabolite.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Inflammation research 6 (1976), S. 602-606 
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The action of some non-steroidal acidic anti-inflammatory drugs, aspirin, phenylbutazone and indomethacin, in reducing leucocyte migration into the exudates of inert porous sponges implanted subdermally in the rat has been shown to be distinct from their effect in reducing the content of prostaglandins in the exudates. It is concluded that a component of the anti-inflammatory and antirheumatic actions of the drugs is concerned with a mechanism other than inhibition of prostaglandin biosynthesis.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Leukotriene B4 isomer III (LTB4) stimulates the aggregation of rat PMNsin vitro. The effects of deoxyglucose, iodoacetate, dinitrophenol, cyclohexamide, colchicine, prostaglandins and thromboxane B2 (TXB2) on aggregation were examined. The results demonstrate that, first, aggregation is an active process, the energy being supplied by glycolysis and not mitochondrial respiration. The response can be elicited in the absence of extracellular glucose. Synthesis of protein does not occur during aggregation. An intact microtubular system is required for the expression of a full aggregation response. Prostaglandins E1, E2, F2α and TXB2, products of the cyclooxygenase pathway of arachidonic acid metabolism, partially inhibit LTB4-induced aggregation by a mechanism which has not yet been elucidated. The prostaglandins and TXB2 themselves do not promote aggregation.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Inflammation research 10 (1980), S. 548-550 
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Polymorphonuclear leucocytes (PMNs), when exposed to the calcium ionophore A23187, release into the supernatant a substance that causes the aggregation and chemokinesis of fresh PMN suspensions. Release of these activities is inhibited by preincubation with drugs known to inhibit lipoxygenase pathways of arachidonic acid metabolism but is unaffected by cyclooxygenase inhibitors. The substance responsible for these activities has been identified as leukotriene B and this compound has been shown to be a potent chemokinetic and aggregatory agent for PMNs over the range 10 pg to 5 ng ml−1.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Sensitized inbred hyperreactive rats showed reproducible episodes of dyspnea when exposed to aerosols of antigen. Following inhibition of the serotonin component of the response by pretreatment with methysergide, the model was shown to be useful for studying the oral activity of compounds that affect the production or action of leukotrienes. This was shown through inhibition of the duration of dyspnea by two selective 5-lipoxygenase inhibitors, L-651,392 and L-615,919, and two selective leukotriene D4 receptor antagonists, L-647,438 and L-649,923. Selectivity of the compounds could be demonstrated by reducing inhibition of the antigen response in the absence of methysergide and failure to inhibit serotonin-induced dyspnea. It is concluded that the model provides a reproducible method for screening large numbers of leukotriene inhibitors and antagonists and gives a measurement of their duration of biological activity.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 629 (1991), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biochemistry 63 (1994), S. 383-417 
    ISSN: 0066-4154
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Chemistry and Pharmacology , Biology
    Type of Medium: Electronic Resource
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