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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 21 (1985), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Cord blood lymphocytes (CBL) have been shown to be functionally immature compared with normal circulating adult lymphocytes (NAL). Differentiation of T cells is associated with changes in surface antigenic markers and in the pattern of purine degradative enzymes. Previous studies have demonstrated that thymosin fraction 5 (TMS-F5) and thymosin alphal (TMS-α1 can induce in vitro differentiation of murine T-cell precursors and human thymocytes. We have investigated the effects of TMS-F5 and TMS-a, on the pattern of the purine degradative enzymes adenosine deaminase, purine nucleoside phosphorylase, and ecto-5′-nucleotidase (5′NT) of CBL and on the phenotypic markers from the OKT series 3,4,8 and 11. Other than a significantly reduced level of 5′NT activity (P〈0.001) and an elevated percentage of OKT4+cells (P〈0.01), CBL demonstrated the same immunological and biochemical patterns as NAL. Incubation of CBL with TMS-F5 (150 jug/ml) and TMS-α1 (1 μ/ml) for 40 h caused a significant rise in 5′NT level and decrease of cells positive for OKT4, resulting in a pattern characteristic of NAL. Thus TMS-F5 might induce the terminal differentiation of CBL, and TMS-α1 seemed to be the active component.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1440
    Keywords: Deoxycoformycin ; Hairy cell leukemia ; Refractory treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Three patients with advanced hairy cell leukemia received low-dose deoxycoformycin treatment after failure to respond to therapy with interferon alpha. Patients 1 and 2 had progressive disease after splenectomy and subsequent treatment with recombinant interferon alpha (for 7 and 3 months, respectively). DCF was administered at 4 mg/m2 weekly for 3 weeks, and then once every week for 6 weeks. Patient 1 was in complete remission after 9 weeks of treatment and patient 2 in partial remission with normalization of peripheral blood counts. The third patient, also splenectomized, developed hepatotoxicity after therapy trial with interferon for 24 days and no objective improvement was observed at this stage. She subsequently responded to DCF treatment with improvements in blood counts and bone marrow. This report demonstrates that DCF is highly effective in hairy cell leukemia and non-cross-resistant with interferon alpha.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1440
    Keywords: T-cell lymphoma ; Osteosclerosis ; Lymphokines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A patient with peripheral T-cell Lymphoma and aquired, systemic osteosclerosis is described. Bone histology showed a spectacular activation of osteoblasts accompanyed by massive new bone formation. Alkaline phosphatase in serum was elevated and increased to 〉2000 U/l when the lymphoma became refractory to chemotherapy. In the patient's serum an osteoblast-activating factor could be demonstrated using a rat osteogenic osteosarcoma cell line (ROS 17/2.8). The factor was absent during remission of the tumor. We conclude that osteosclerosis was a paraneoplastic syndrome in this patient due to the secretion of an osteoblast-stimulating factor by the T-cell lymphoma. This situation is similar to the secretion of osteoclast-activating factors described in B-cell lymphomas, particularly multiple myeloma. The characterization of such a factor could be of therapeutic relevance.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Keywords: Rheumatoid arthritis ; Spondylarthropathies ; TNF receptors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two types of tumor necrosis factor receptors have been characterized, both capable of transmitting the signal and exerting the biological functions of TNF and lymphotoxin. We measured the plasma concentrations of two types of TNF binding proteins (sTNFR-A and sTNFR-B) in patients with rheumatoid arthritis (RA) and spondylarthropathies (SpA) using an enzyme-linked binding assay. In normal controls (n = 43), mean plasma concentrations were 1030 ± 55 and 1461 ±59 pg/ml for sTNFR types A and B, respectively. In 67 patients with moderate RA, mean levels were 1422 ± 82 pg/ml (type A) and 2088 ± 109 pg/ml (type B); in 34 patients with severe RA, 2588 ±279 pg/ml and 4494 ± 550 pg/ml, respectively, were measured (P 〈 0.0001 compared to normal controls). Concentrations of both type A and type B sTNFR were highly correlated in severe RA (R2 = 0.7) but not in SpA or normal controls. T lymphocytes in synovial fluid of patients with RA expressed predominantly type A TNF receptors on their surface; in some patients a weaker expression of type B receptors was also detectable. Soluble TNF binding proteins in patients with RA were able to neutralize TNF in a cytotoxiity assay, demonstrating their ability to act as “TNF-inhibiting factors”. We conclude that both types of TNF receptors are parameters of disease activity in RA and may also act as TNF antagonists.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 51 (1964), S. 221-222 
    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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  • 6
    ISSN: 1432-0584
    Keywords: Autologous bone marrow transplantation ; Acute leukemia ; 4-hydroperoxycyclophosphamide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An autologous bone marrow transplantation (ABMT) was performed in a 45-year-old male patient with AML in therapy-resistant first relapse including CNS-disease. The marrow graft was harvested 18 months before, at the beginning of first remission, and was subjected to an in-vitro incubation with 4-hydroperoxycyclophosphamide (4-HC) prior to cryopreservation to eliminate residual clonogenic tumor cells. After myeloablative therapy with high-dose Cyclophosphamide (CY), total body irradiation (TBI) and intrathecal application of Methotrexate (MTX), the manipulated marrow graft was reinfused. The myelopoietic reconstitution started already 6 days after ABMT and was completed 40 days thereafter. There is evidence for a complete remission in marrow and spinal fluid observed over a period of 4 months.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 39 (1979), S. 141-145 
    ISSN: 1432-0584
    Keywords: Alkalische Leukozytenphosphatase (ALP) ; maligne Erkrankungen ; Metastasen ; Leukocyte alkaline phosphatase (LAP) ; Malignant disease ; Metastases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The leukocyte alkaline phosphatase (LAP) levels were determined in 183 patients with malignant diseases and 71 normal controls. The median LAP scores were 64 units (range 0 to 290) for the patients and 55 (range 2 to 158) for the controls, respectively, and no significant difference could be established. When analyzed according to primary malignancy, only in patients with Hodgkin's disease (n = 14) was the median value higher than normal (p 〈 0.001). In patients with distant metastases (n = 48), higher LAP levels were demonstrated (M = 76, range 21 to 290) as compared to patients with no evidence of metastases (M = 53, range 0 to 229), (p 〈0.01). Thus, LAP activity has very limited value in the diagnosis of malignancies. Its elevation in the presence of malignant disease might, however, indicate metastases.
    Notes: Zusammenfassung Bei 183 Patienten mit malignen Erkrankungen und 71 Kontrollpersonen wurde der ALP-Index untersucht. Der Median für die Patienten war 64 (range 0–290) und für die Kontrolle 55 (range 2–158). Dieser Unterschied ist jedoch statistisch nicht signifikant. Bei der Analyse der ALP-Indices nach Tumorgruppen konnte eine signifikante Erhöhung des ALP-Index nur bei Morbus Hodgkin (n = 14) festgestellt werden (p 〈0,001). Der ALP-Index war auch bei Patienten mit Metastasen (n = 48) (M = 76, range 21 zu 290) im Vergleich zum ALP-Index bei Patienten ohne Metastasen (n = 118, M = 53 range 0–229) erhöht (p 〈0,01). Die ALP-Aktivität hat also nur einen beschränkten Wert in der Diagnostik bei malignen Erkrankungen. Eine Erhöhung kann jedoch auf das Vorliegen von Metastasen hinweisen.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 51 (1985), S. 287-289 
    ISSN: 1432-0584
    Keywords: Immunoblastic lymphoma ; Respiratory distress ; Endotracheal lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A report on a 74-year old woman with high-grade malignant non-Hodgkin lymphoma in clinical remission, who suddenly developed episodes of severe dyspnea and wheezing. Clinical and roentgenographic investigations including tomography of the trachea failed to demonstrate any lesion. Fiberoptic bronchoscopy revealed and endotracheal, polyp-like lymphoma 3 cm above the carina, which was immediately operated. Other sites of relapse (submandibular lymphnodes) were found 2 weeks after the operation. Second-line chemotherapy (IMVP 16) was able to induce a second remission.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1440
    Keywords: Hyperthyroidism ; Erythrocytes ; Na-K ATPase ; Na-Li countertransport ; Intracellular sodium concentration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To investigate the effect of thyroid hormones on erythrocyte cation transport systems and intracellular electrolyte content we have measured the activity of Na-K ATPase, Na-Li countertransport, as well as red cell sodium and potassium contents in patients with hyperthyroidism and in euthyroid controls. Intracellular Na- and K-concentrations were determined in erythrocytes washed three times in isotonic MgCl2 solution. Ouabain-sensitive Na-transport was estimated as the increase of Na before and after addition of ouabain in an erythrocyte suspension in isotonic Na-free medium. Na-Li countertransport was measured according to the method described by Canessa et al. [2]. The patients with hyperthyroidism exhibited a significantly elevated intracellular sodium content as well as a highly increased Na-K ATPase activity. Intracellular potassium content was not altered in the hyperthyroid subjects, but Na-Li countertransport was markedly decreased as compared to the controls. The results indicate that different ion transport systems of the erythrocyte membrane are influenced by thyroid hormones. We suggest that the elevation of Na-K ATPase activity might be due to the increased intracellular sodium concentration which is caused by the diminished countertransport pathway. Furthermore, the activity of Na-K ATPase, Na-Li countertransport, and intracellular sodium content in erythrocytes might be a useful peripheral indicator of thyroid hormone excess.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1440
    Keywords: Muskeldystrophie vom Duchenne-Typ ; Membrandefekt ; Capping ; Konduktorinnen ; Duchenne muscular dystrophy ; Membrane defect ; Capping ; Carrier detection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Recent results showed that Duchenne muscular dystrophy is probably associated with a generalized membrane defect. The capping phenomenon in lymphocytes indicates normal intramembrane protein mobility and disturbances of this phenomenon are is believed to reflect membrane alterations. We have investigated capping in lymphocytes from 19 patients with Duchenne muscular dystrophy, 13 carriers, 8 patients' sisters, 14 patients' aunts and 52 normal controls. All 19 patients showed a reduction in capping both with fluorescein conjugated polyvalent goat antiserum (mean±SD=18.5±5.2%) and with fluorescein labeled Concanavalin A (mean±SD=10.8±3.2%) as compared to controls. Normal persons (n=52) have a mean of 50.2±9.9% (SD) capping with polyvalent anti-immunoglobulin (range: 32–72.5%) and 25.6±3.6% with F-Con A (range: 18.5–31.5%). 12 of the 13 mothers, as well as 5 of the 8 patients' sisters, also exhibited decreased lymphocyte capping to the same extent as the patients. Creatine kinase activity (CK) was elevated only in 4 mothers and 2 of the sisters. Our results indicate that this method might be of value in detecting carriers and can yield less false negative results as the CK-activity test.
    Notes: Zusammenfassung Es liegen Hinweise dafür vor, daß der progressiven Muskeldystrophie vom Duchenne-Typ (DMD) ein generalisierter Membrandefekt zugrunde liegt. Eine Möglichkeit zum Nachweis einer gestörten Membranfunktion stellt die Untersuchung des Capping-Phänomens von Lymphozyten dar. Es handelt sich dabei um eine fluoreszenzmikroskopisch erfaßbare Umverteilung der Oberflächen-Rezeptoren nach Antigenkontakt. Wir haben das Capping-Phänomen bei 19 Patienten und Angehörigen von 13 Familien mit DMD untersucht und dabei folgende Ergebnisse gewonnen: Lymphozyten von Kontrollpersonen zeigten mit Fluorescein markiertem Antiserum gegen Immunglobuline mit 50,2±9,9% (Mittelwert±SD) ein positives Capping-Phänomen und mit Fluorescein markiertem Concanavalin A (F-Con A) 25,6±3,6% (Mittelwert±SD). Demgegenüber war bei Patienten mit DMD, bei denen stark erhöhte Kreatin-Phosphokinase Werte (CK) gefunden wurden, das Capping-Phänomen mit Antiserum auf durchschnittlich 18,5±5,2% (Mittelwert±SD) vermindert und mit F-Con A auf 10,8±3,2% (Mittelwert±SD). Bei 12 der 13 Mütter, sowie bei 5 der 8 Schwestern der Patienten wurde ein vermindertes Capping in demselben Ausmaß wie bei den Patienten nachgewiesen. CK-Aktivität war jedoch nur bei 4 Mütter und 2 Schwestern pathologisch erhöht. Unser Ergebnis unterstützt die Hypothese, daß die Muskeldystrophie vom Duchenne-Typ mit einem generalisierten Membrandefekt einhergeht. Dieser Defekt läßt sich mittels Capping außerdem auch bei sonst “stummen” Konduktorinnen nachweisen. Diese Methode könnte sich bei der genetischen Beratung als wertvoll erweisen, da sie nach den bisherigen Ergebnissen weniger falsch negative Resultate liefert, als die alleinige Bestimmung der CK-Aktivität im Serum.
    Type of Medium: Electronic Resource
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