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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 56 (1978), S. 809-818 
    ISSN: 1432-1440
    Keywords: Hodgkin's disease ; Splenectomy ; Immune status ; Morbus Hodgkin ; Splenektomie ; Immunstatus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 22 nicht behandelten Hodgkin-Patienten wurden vor und nach Splenektomie die Gesamtzahl der peripheren Leukozyten, Lymphozyten, T-Zellen und B-Zellen, sowie die in vitro Stimulation von peripheren, und zum Zeitpunkt der Splenektomie, auch der Milzlymphozyten untersucht. Diese Daten wurden in Beziehung gesetzt zu prognostisch günstigen und ungünstigen Gruppen, entsprechend Stadium, Histologie, Milzbefall und B-Symptomatik. Für das Gesamtkollektiv ergab sich keine wesentliche Änderung des Stimulationsverhaltens peripherer Lymphozyten durch die Splenektomie. Dagegen zeigte sich ein signifikanter Anstieg der spontanen DNS-Synthese peripherer Lymphozyten mit Kontrollserum. Ebenso waren Gesamtleukozyten, Lymphozyten und B-Zellen nach Splenktomie signifikant erhöht, während sich die Zahl der T-Zellen nicht veränderte. Die Zahl der peripheren B-Zellen und die spontane DNS-Syntheserate mit autologem Hodgkin-Serum stieg in denprognostisch günstigen Gruppen signifikant an, während sich diese Parameter bei denprognostisch ungünstigen Gruppen nicht wesentlich änderten. In der T-Zellfunktion (Stimulation mit PHA und Con A) zeigten die prognostisch günstigen Gruppen mit autologem Serum einen signifikanten Abfall nach Splenektomie, während in den ungünstigen Gruppen diese Tendenz nicht beobachtet wurde. In der histologisch günstigen Gruppe ergab sich zusätzlich ein signifikanter Anstieg der EBV-induzierten Blastogenese. Die absolute Zahl der T-Zellen wurde ohne Ausnahme in keiner der Gruppen durch die Splenektomie beeinflußt. Die spontane DNS-Synthese stieg in der Untersuchung mit Kontrollserum nach Splenektomie in allen Gruppen an, während bei Zusatz von autologem Hodgkin-Serum der Anstieg nur in prognostisch günstigen Gruppen beobachtet wurde. Eine pathogenetische oder prognostische Wertung der Splenektomie bei Hodgkin-Patienten ist aus den vorgelegten Ergebnissen noch nicht möglich.
    Notes: Summary In 22 untreated Hodgkin's patients the following parameters were studied before and after splenectomy: the total WBC, lymphocytes, B- and T-cells and mitogenic stimulation of peripheral lymphocytes using autologous and control serum. The results were correlated to patient groups with favourable and unfavourable prognosis according to pathological stage, histology, spleen involvement and constitutional symptoms. 1. All Patients. Significant increase of the absolute number of peripheral lymphocytes and B-cells. Significant increase of the spontaneous DNA synthesis in the presence of AB-control serum, but no change after mitogenic stimulation of peripheral lymphocytes. No change in the number of peripheral T-cells. 2. Patients with Favourable Prognosis. Significant increase of the absolute number of peripheral lymphocytes and B-cells. Significant increase of the spontanous DNA synthesis in the presence of AB-control-serum. Significant decrease of the T-cell function (PHA-and Con-A-stimulation in the presence of autologous serum). Significant decrease of the PHA-, Con-A- and PWM stimulation rate using control serum in the lymphocytic predominance and nodular sclerosis group. No change in the number of peripheral T-cells. 3. Patients with Unfavourable Prognosis. No change in the absolute number of B-cells, of the spontanous DNA-synthesis using autologous serum and of the PHA- and Con-A-stimulation. Significant increase of the EBV-induced blastogenesis in the mixed cellularity and lymphocytic depletion group.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 44 (1966), S. 774-780 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Aerobically maintained monolayer cultures of monkey kidney and HeLa cells are able to metabolize D-galactose instead of glucose. Cell-growth, maintenance of cultures and replication of poliomyelitis virus take place to the same degree as with glucose as substrate. There are, however, considerable differences in respiratory and glycolytic activities between glucose and galactose when used as source of carbohydrate. With galactose as substrate, the cells do not glycolyse aerobically, whereas they have, compared with glucose metabolizing cells, an enhanced respiratory activity, equal to the degree of endogenous respiration. The utilization of galactose corresponds to the respiratory rate. Under anaerobic conditions galactose cannot substitute glucose. With galactose as substrat there is no anaerobic glycolysis just as there is no aerobic glycolysis, whereas with glucose as substrate anaerobic glycolysis exists to a large extend. Therefore the metabolism of anaerobically maintained cells with galactose as substrate breaks down as rapidly as in a hexosefree medium. The cause of the altered metabolism with galactose instead of glucose as substrate is discussed. It is supposed that the turnover of galactose is limited by the activity of the UDPG-4-epimerase and subsequently the production of pyruvate is diminished. Though the amount of pyruvate is sufficient for the highly economical oxydative energy production, it is not sufficient for the less economical anaerobic glycolysis.
    Notes: Zusammenfassung Unter aeroben Kulturbedingungen können Monolayer-Kulturen aus Affennieren-und HeLa-Zellen Galaktose anstelle von Glucose verwerten. Zellwachstum, Erhaltung der Kulturen und die Vermehrung von Poliomyelitisvirus sind unter beiden Substratbedinungen in gleicher Weise möglich. Atmungsgröße und glykolytische Aktivität der Kulturzellen zeigen jedoch deutliche Unterschiede: Unter Galaktose als Substrat bieten die Zellen keine aerobe Glykolyse, die unter Glucose ausgeprägt ist. Dagegen ist die Atmung unter Galaktose höher als unter Glucose, sie entspricht der endogenen Atmung. Der Galaktoseverbrauch aus dem Medium entspricht der Atmungsgröße. Unter anaeroben Kulturbedingungen kann Glucose nicht durch Galaktose ersetzt werden. Galaktose kann anaerob ebenso wenig glykolytisch verwertet werden wie aerob, während Glucose zu hoher anaerober Glykolyse führt. Der Stoffwechsel anaerob gehaltener Zellen bricht unter Galaktose genau so schnell zusammen wie in zuckerfreiem Medium. Die Ursachen des veränderten Stoffwechsels unter Galaktose anstelle von Glucose als Substrat werden diskutiert. Es wird angenommen, daß der Galaktoseumsatz durch die Aktivität der UDPG-4-Epimerase limitiert wird. Die dadurch vermindert anfallende Pyruvatmenge reicht bei Anwesenheit von O2 aus, um über den oxydativen Endabbau ausreichend Energie bereit zu stellen, sie ist aber für die wenig rationelle glykolytische Energiebildung unzureichend.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 67 (1989), S. 690-690 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 70 (1992), S. 670-673 
    ISSN: 1432-1440
    Keywords: Malaria ; Cardiac abnormality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In 22 patients without a previous history of cardiac disease, we prospectively evaluated cardiac involvement during acute malaria and 9±5 months after recovery using non-invasive methods including resting electrocardiogram (ECG) and two-dimensional (2D) echocardiography. During the acute phase ECG abnormalities were common (5/22); pericardial effusion was found in 2 patients and global left ventricular hypokinesia in 1 patient infected with Plasmodium falciparum. At a follow-up of 19 patients, the resting ECG and echocardiography were normal or had normalized in all patients. The results of our study suggest that persistent cardiac damage following malarial infection seems to be rare; however, further trials in a larger patient population are needed to confirm our findings.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Histopathology 43 (2003), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Aims:  To analyse systematically therapy-induced lesions of haematopoiesis in chronic idiopathic myelofibrosis (IMF).Methods and results:  A total of 759 sequential bone marrow (BM) biopsies (median interval 32 months) were performed in 261 patients with IMF. Besides a control group (symptomatic treatment), monotherapies included busulfan, hydroxyurea and interferon. In all therapy groups hypoplasia of varying degree was a frequent finding and often accompanied by a patchy distribution of haematopoiesis. Most conspicuous was gelatinous oedema showing a tendency to develop discrete reticulin fibrosis (scleroedema). Minimal to moderate maturation defects of megakaryopoiesis and erythroid precursors occurred, but overt myelodysplastic features were most prominent following hydroxyurea and busulfan therapy. Acceleration and blastic crisis were characterized by the appearance of immature and CD34+ progenitor cells. Concerning the dynamics of fibrosis, no differences were observed between controls and the various therapy groups. In 143 patients (55%) without or with little reticulin at onset, an increase in myelofibrosis was detectable that progressed to overt collagen fibrosis.Conclusions:  Therapy-related bone marrow lesions in IMF comprise a strikingly variable spectrum that may include aplasia with scleroedema and a patchy distribution of myelodysplastic haematopoiesis associated with progressive myelofibrosis.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 584 (1979), S. 467-478 
    ISSN: 0304-4165
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Cancer Genetics and Cytogenetics 20 (1986), S. 39-52 
    ISSN: 0165-4608
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0165-4608
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    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 278 (1976), 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
    Springer
    Virchows Archiv 389 (1980), S. 397-407 
    ISSN: 1432-2307
    Keywords: Non-Hodgkin's lymphomas ; Cell kinetics ; In-vitro labelling ; Double labelling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Since lymphomas of high and low malignancy have been differentiated by the Kiel-classification, the cell kinetics of malignant lymphomas have become an interesting subject. In 20 non-Hodgkin's lymphomas we have determined the initial labelling index, the mitosis index, the proliferation rate and the durations of DNA-synthesis and mitosis. The kinetic variables have been estimated by using an in vitro-incubation of fresh biopsies and double-labelling with radioactive DNA-precursors. In 8 lymphomas of low malignancy we found an initial labelling index of 7.8%, a mitosis index of 0.3% and a potential tumour doubling time of 100.2 h for a cell production rate without regard to cell loss. On the other hand, lymphomas of high malignancy showed a labelling index of 16.7%, a mitosis index of 0.7% and a potential tumour doubling time of 40.5 h. All these values could be differentiated with high statistical confidence. DNA-synthesis time and mitosis time of both lymphoma groups did not show any significant differences. From these findings we obtained confirmation of the cyto-morphological principles used in classifying lymphomas.
    Type of Medium: Electronic Resource
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