Bibliothek

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Annals of hematology 64 (1992), S. A132 
    ISSN: 1432-0584
    Schlagwort(e): Hepatitis A virus ; In vitro myelopoiesis ; Long-term bone marrow cultures
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Perturbations of hematopoietic regulation ranging from transient granulocytopenia to rare cases of bone marrow failure are associated with infections due to hepatitis A virus (HAV). In an attempt to elucidate the pathogenetic mechanisms we had previously established that HAV has a direct suppressive effect on human bone marrow progenitors (CFU-GM, -GEMM, BFU-E). These studies were extended to long-term bone marrow cultures (LTBMC): Inoculation of bone marrow mononuclear cells with HAV did not interfere with the establishment of an adherent stromal layer, nor did the inoculation of already established layers cause any morphologically recognizable changes to the stroma. In contrast, a significant and progressive decline of the CFU-GM content in the culture supernatants was demonstrated. HAV antigen was detected by APAAP stain in a subpopulation of stromal cells, and sequential estimations of virus titers in the supernatants provided evidence for viral replication in primary bone marrow cultures. Interferon-gamma and tumor necrosis factor-alpha levels of infected cultures did not differ from those of uninfected controls. These findings argue for a direct suppression of (pre-) CFU-GM by HAV in a model system (LTBMC) lacking an immune defense which would limit viral replication.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    ISSN: 1432-0584
    Schlagwort(e): Anthracyclines ; Verapamil ; Bone marrow progenitors
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Drug-induced myelotoxicity is usually the dose-limiting factor of treatment of malignant tumors with cytostatic drugs. Suppression of in vitro myelopoiesis (CFU-GM) by cytostatics may be a suitable model reflecting the in vivo situation. Thus the inhibitory effects of the anthracyclines doxorubicin, theprubicin, idarubicin and cytorhodin S on CFU-GM were compared. Normal human bone marrow cells were incubated with these drugs for one hour and alternatively, for the whole culture period. For each substance and each incubation time a dose-response curve was established and the D50 determined. As certain calcium antagonists can increase the toxicity of some cytostatic drugs in various tumor models, the effect of the addition of verapamil (2µM) was also investigated. It could be shown, that the myelotoxicity on CFU-GM of the drugs mentioned above was not increased after short-term or permanent exposure to this calcium antagonist.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Langenbeck's archives of surgery 361 (1983), S. 653-655 
    ISSN: 1435-2451
    Schlagwort(e): Cervical biopsy ; Neurological complications ; Suitable anaesthesia ; Probeexcision im Halsbereich ; Neurologische Komplikationen ; Geeignete Anaesthesie
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Bei 433 Patienten mit Probeexcision im Bereich des Halses fanden sich neben Lymphadenitiden in erster Linie hämatologische Malignome und Metastasen maligner Tumoren. In 4,8 % traten behandlungsbedürftige Komplikationen auf, zum einen Wundheilungsstörungen (Hämatome, Entzündungen), zum zweiten neurologische Komplikationen des Nervus accessorius. Bei 4 Patienten bildeten sich diese vollständig zurück, einmal blieb eine Parese des Musculus deltoideus bestehen. Die Analyse des Krankengutes läßt erkennen, daß vor allem ungeeignete Narkoseverfahren (Lokalanaesthesie) bei in der Tiefe gelegenen, schlecht abgrenzbaren Tumoren zu Komplikationen geführt hatten.
    Notizen: Summary In 433 cervical biopsies lymphadenitis, metastases of malignant tumors and of the haematologic system could be found first of all. In 4.8 % complications needed a further treatment, firstly trouble in wound healing (haematoma, inflammation), secondly neurological complications of the accessorial nerve. These complications receded in 4 patients completely, in one patient a paralysis of the deltoid muscle continued. The analysis of our patients suggested that unsuitable anaesthesia (local anaesthesia) for deeper-seated, badly demarked tumors is responsible for most of the complications.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...