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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 44 (1996), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The authors analysed the effect of protein kinase A (PKA) activation on the protein synthesis and secretion in the T-helper 2 cell line D10.G4.1 (D10) using an assay that allows the detection of almost all secreted proteins of a cell. IL-4 and IL-10 were quantified. Three groups of secretory products could be defined. The T-cell receptor (TCR)-induced production of the first group (A) of proteins including IL-4 was enhanced by low concentrations of PKA activators. At higher concentrations the enhancement was less marked. The synthesis and secretion of a second group (B) of proteins including IL-10 remained unaffected. The production of a third group (C) of proteins was inhibited in a concentration-dependent manner. Biochemical analysis revealed a block of phospholipase C γ (PLCγ) activity by PKA activators. When D10 cells were stimulated by a phorbol ester plus calcium ionophore the production of group A proteins was enhanced almost fourfold, whereas production of group B proteins was unaffected by PKA activation. This effect was observed at all concentrations of various PKA activators tested. The secretion of group C proteins was no longer inhibited. The same results were obtained when analysing IL-4 and IL-10 m-RNA by Northern blotting. The data demonstrate a lymphokine specific mode of action on a single cell basis. Furthermore, it suggests that the inhibitory action of PKA in D10 cells is due partly to blocking of PLCγ activity.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 222 (1969), S. 1247-1250 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Nuclei isolated from human peripheral blood lymphocytes stimulated by phytohaemagglutinin have a greater capacity to prime for nucleotide incorporation into RNA in the presence of exogenous bacterial RNA polymerase than nuclei from unstimulated ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Experimental Cell Research 80 (1973), S. 297-304 
    ISSN: 0014-4827
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Ultrasructure Research 44 (1973), S. 11-26 
    ISSN: 0022-5320
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1440
    Keywords: Lupus anticoagulant ; Paraproteinemia ; Systemic lupus erythematosus ; Multiple myeloma ; Lymphoproliferative diseases ; Lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The clinical and laboratory findings in seven female patients with primary autoimmune diseases, one female patient with lymphoplasmacytoid (LP) immunocytoma and IgM paraproteinemia, and two male patients with multiple myeloma are described. The common denominator in all patients was a lupus anticoagulant or a closely related coagulation disorder. Recurrent thrombosis was observed in six patients with autoimmune diseases and in two patients with malignant monoclonal gammopathies. Other clinical manifestations included cerebral disorders (four patients with autoimmune disease/two patients with monoclonal gammopathy), repeated obstetric complications (6/1), asymptomatic valvular heart disease (6/1), renal dysfunction (6/2), hepatic involvement (2/2), and arthropathy (2/0). Laboratory investigations revealed a biologic false-positive serological test for syphilis in six patients with autoimmune disease and one with monoclonal gammopathy, antinuclear antibodies (4/0), antibodies against DNA (4/1), and a positive direct Coombs test (3/1) which was accompanied by hemolytic anemia in two patients (1/1). Additionally slight leucocytopenia (2/1) and thrombocytopenia (6/2) were observed; abnormal bleeding was only seen in one patient with severe thrombocytopenia. Other complications characteristic of LP immunocytoma or multiple myeloma were missing. The obvious similarities between the patients with autoimmune diseases and the patients with malignant monoclonal gammopathies suggest analogous pathogenetic mechanisms. Since the clinical syndrome associated with the lupus anticoagulant in patients with autoimmune disorders has been proposed to arise from the action of autoantibodies against phospholipids, it is attractive to hypothesize that the findings in the patients with malignant diseases were caused by an autoantibody activity of the monoclonal immunoglobulin. This assumption is substantiated by the observation that in one patient the paraprotein level correlated with the prolongation of the coagulation times and the severeness of the clinical perturbations. Although paraproteins mimicking the laboratory alterations of the lupus anticoagulant have been reported before, the corresponding clinical features have not yet been described in malignant monoclonal gammopathies. The syndrome may be juxtaposed to other systemic disorders complicating paraproteinemias, and is possibly more frequent than is as yet known.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 65 (1987), S. 237-237 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 65 (1987), S. 818-822 
    ISSN: 1432-1440
    Keywords: Lupus anticoagulant ; Systemic lupus erythematosus ; Paraproteinemia ; Lymphoproliferative diseases ; Multiple myeloma ; Myeloproliferative diseases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A strong correlation exists between the presence of an in vitro plasma coagulation inhibitor, named “lupus anticoagulant”, and a clinical syndrome of recurrent arterial and venous thromboses, neurological abnormalities, repeated obstetrical complications, thrombocytopenia, a biologic false-positive serological test for syphilis, and a variety of rarer manifestations. This syndrome has predominantly been observed in patients with autoimmune diseases, but it may be of similar importance in association with monoclonal gammopathies. As an introduction to a detailed analysis of ten observations which will also be published in this journal, this article reviews the clinical findings, the proposed pathogenetic mechanisms and the approaches to management of the lupus anticoagulant associated syndrome.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-0584
    Keywords: Non-Hodgkin lymphoma ; Centrocytic lymphoma ; Centroblastic-centrocytic lymphoma ; Centroblastic lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Clinical data of 48 patients with centrocytic, 83 patients with centroblastic/centrocytic and 64 patients with centroblastic lymphoma who had entered a prospective multicenter study of the Kiel Lymphoma Study Group since October 1975 were compared. Advanced (stage IV) disease at time of diagnosis, predominantly due to bone marrow infiltration, was most frequent in centrocytic (69% of patients) and in centroblastic/centrocytic (51% of patients) lymphomas as compared to only 28% of patients with centroblastic lymphoma. High survival probability of patients with localized centrocytic and centroblastic/centrocytic lymphomas after radiotherapy, contrasting with a worse prognosis of corresponding patients with centroblastic lymphoma, is compatible with the classification of these lymphoma entities as neoplasias of low-grade malignancy. However, as shown by this prospective and previous retrospective trials overall survival probability of patients with advanced centrocytic lymphoma was inferior to that observed in corresponding patients with centroblastic/centrocytic lymphoma. These findings suggest the possibility that patients with advanced centrocytic lymphoma occupy an intermediate position between typical low-grade and typical high-grade malignant non-Hodgkin lymphomas.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 39 (1979), S. 117-131 
    ISSN: 1432-0584
    Keywords: Non-Hodgkin lymphoma ; T-zone lymphoma ; T-cellimmunoblastic sarcoma ; Peripheral T-cell lymphoma ; Non-Hodgkin-Lymphom ; T-Zonen-Lymphom ; T-immunoblastisches Sarkom ; peripheres T-Zellen-Lymphom
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Anhand von 32 Patienten mit T-Zonen-Lymphom wurden klinisches Bild, Ansprechen auf die Therapie und die Prognose dieser neuen Lymphom-Entität analysiert. Das Krankheitsbild entwickelt sich relativ rasch mit generalisierten Lymphknotenschwellungen und Beeinträchtigung des Allgemeinbefindens. Häufig sind Hepato- und/oder Splenomegalie und Hauteffloreszenzen vorhanden. Einige Patienten zeigen hyperimmunisatorische Reaktionen, selten auch schwere autoimmunhämolytische Anämien. Die Blutkörperchensenkungsgeschwindigkeit ist meistens stark beschleunigt; die Immunglobuline sind zum Teil polyklonal vermehrt, zum Teil auch vermindert. In einigen Fällen finden sich ganz vereinzelt atypische Lymphozyten in Blut- und Sternalmarkausstrichen. Auffallend ist die häufige Absiedlung in Lunge oder Pleura (bei 40,5% der Patienten). Die Prognose ist ungünstig. Die Mehrzahl der Erkrankten befindet sich bei Diagnosestellung bereits in den Stadien III und IV. Organinfiltration und -Verdrängung bei weitgehender Resistenz gegenüber den üblichen therapeutischen Maßnahmen und zunehmender Abwehrschwäche führen rasch ad exitum. Die Überlebenswahrscheinlichkeit beträgt 0,48 für das 1. Jahr nach Diagnosestellung. Die Prognose der Patienten in den Stadien I und II ist deutlich besser als die der Patienten in den Stadien III und IV.
    Notes: Summary The clinical symptoms, response to therapy, and prognosis of T-zone lymphoma were analyzed in 32 cases. This recently defined lymphoma entity developed relatively quickly with generalized lymphadenopathy and general malaise. Hepatomegaly and/or splenomegaly and skin efflorescence were frequent presenting symptoms. A few patients showed hyperimmune reactions and occasionally severe autoimmune hemolytic anemia. The erythrocyte sedimentation rate was usually markedly elevated. There was sometimes a polyclonal increase in serum immunoglobulin, sometimes a reduction. Blood and bone marrow smears from a few patients showed occasional atypical lymphocytes. A remarkable finding was the frequent involvement of lung or pleura (40.5% of the patients). The prognosis is unfavorable. Most of the patients were in stages III or IV at the time of diagnosis. Massive infiltration of organs, resistance to routine therapy, and decreasing resistance to infection resulted in death soon after diagnosis. The probability of survival was 0.48 in the first year after diagnosis. The prognosis for patients in stages I and II was clearly better than that for patients in stages III and IV.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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