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  • 1
    ISSN: 1432-1440
    Keywords: Key words Induction ; p53 ; WAF1/CIP1 ; CLL
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The treatment of chronic lymphocytic leukemia includes the use of alkylating agents, steroids, and more recently nucleoside analogues. While prior studies have described potential mechanisms of 2-chlorodeoxyadenosine cytotoxicity including the accumulation of DNA strand breaks and induction of apoptosis or programmed cell death, the expression of p53 and its downstream target WAF1/CIP1 have not been examined. In this report we describe the induction of p53 and WAF1/CIP1 in the apoptotic chronic lymphocytic leukemia cells after exposure to 2-chlorodeoxyadenosine.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 114 (1964), 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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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 3 (1974), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Four cases of hairy cell leukemia wire studied by immunofluorescence. All hairy cells bore surface immunoglobulin. In two cases, only IgD was detected on the cell surface, whereas both IgM and IgD were present in the other two cases. After adsorbed IgG was removed by overnight culture, only one class of light chains was detected. In addition, most of the hairy cells were capable of ingesting latex particles. These findings suggest that hairy cell leukemia is caused by a monoclonal proliferation of a type of Ig-bearing B cell with phagocytic potential.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Keywords: Induction ; p53 ; WAF1/CIP1 ; CLL
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The treatment of chronic lymphocytic leukemia includes the use of alkylating agents, steroids, and more recently nucleoside analogues. While prior studies have described potential mechanisms of 2-chlorodeoxyadenosine cytotoxicity including the accumulation of DNA strand breaks and induction of apoptosis or programmed cell death, the expression of p53 and its downstream target WAF1/CIP1 have not been examined. In this report we describe the induction of p53 and WAF1/CIP1 in the apoptotic chronic lymphocytic leukemia cells after exposure to 2-chlorodeoxyadenosine.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 111 (1970), S. 75-89 
    ISSN: 1432-0878
    Keywords: Lymphocytes ; Replacement rate ; Autoradiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Bei jugendlichen erwachsenen, weiblichen Ratten wurden der Markierungsindex und die Markierungsintensität kleiner Lymphozyten und größerer lymphoider Zellen im zirkulierenden Blut und in Lymphknoten während und nach langzeitig wiederholten Injektionen von Thymidin-3H verfolgt. Die radioaktive Vorläufersubstanz wurde in 8stündigen Intervallen über eine Zeitdauer von 30 Tagen intramuskulär verabreicht. Unter der Annahme, daß es bei diesem Verfahren zu keinen nennenswerten radiogenen, pharmakologischen oder hormonalen Störungen kam, erscheinen die nachstehenden Schluß folgerungen gerechtfertigt: 1. Während des ersten Tages der Injektionsperiode wurden im Mittel 18% (Maximum: 29%) unmarkierte kleine Lymphozyten durch markierte ersetzt. Die Markierungsindices dieser Zellart im Blut, als Funktion der Zeit nach Beginn der wiederholten Injektionen von Thymidin-3H, ergaben eine Kurve, die um den 8. Tag herum 50% und nach 30 Tagen 79% (Maximum: 85%) erreicht. 2. Die Resultate lassen sich am ehesten mit der Annahme in Einklang bringen, daß die Häufigkeitsverteilung der verschiedenen Werte für die G 0-Zeit (Erklärung im Text), bzw. Verweiloder Rezirkulationsdauer, der kleinen Lymphozyten im peripheren Blut eine kontinuierliche ist und einen Gipfel bei einem bis mehreren Tagen aufweist. 3. Die größeren lymphoiden Zellen im peripheren Blut wurden in ihrer überwiegenden Mehrzahl wesentlich rascher umgesetzt als die kleinen Lymphozyten. 4. Der Markierungsindex der kleinen Lymphozyten in Lymphknotenausstrichen entsprach am Ende der Injektionsperiode demjenigen im peripheren Blut. Am Ende der Injektionsperiode fanden sich in den äußeren Rindenschichten der Lymphknoten, wo der schwer mobilisierbare Pool von Lymphozyten liegt, mindestens ebenso viele unmarkierte kleine Lymphozyten wie im zirkulierenden Blut. 5. Die Blutmonozyten waren 4 Tage nach Beginn der wiederholten Injektionen von Thymidin-3H zu 100% markiert und behielten diesen Markierungsindex während der restlichen Injektionsperiode bei. Die Befunde werden im Zusammenhang mit Fragen des Proliferationsmodus und der Wanderungsmöglichkeiten der Lymphozyten sowie ungenügender autoradiographischer Wirksamkeit besprochen und mit den von anderen Autoren mitgeteilten Resultaten nach kontinuierlicher intravenöser Infusion von Thymidin-3H verglichen.
    Notes: Summary Young adult female Sprague-Dawley rats were given intramuscular injections of thymidine-3H at 8-hour intervals for a period of 30 days in order to follow the labeling indices and labeling intensities of small lymphocytes and of large lymphoid cells in the circulating blood and lymph nodes. Assuming that radiotoxic, pharmacological and/or hormonal effects were negligible, the following conclusions seem to be justified: 1. During the first day of the injection period the labeling index of small lymphocytes in the peripheral blood rose from zero to an average of 18% (maximum: 29%). Labeling indices of this cell type in the circulating blood, as a function of time after onset of the labeling procedure, followed a curve which reached 50% around day 8 and 79% at the 30 day terminal interval. 2. Results can best be explained by the hypothesis that the frequency distribution of the values for G 0 time or residence (recirculation) time of small lymphocytes in the circulating blood is a continuous one and shows a marked peak from one to a few days. 3. Large lymphoid cells in the peripheral blood were replaced much more rapidly than small lymphocytes. 4. The labeling index of small lymphocytes in lymph node smears at the end of the injection period corresponded to that of small blood lymphocytes. Autoradiographs of histological sections revealed that the outer zones of the lymph node cortex which contains preferentially the more sessile pool of lymphocytes, contained as high a percentage of unlabeled small lymphocytes as did the circulating blood. 5. Blood monocytes were labeled to 100% 4 days after beginning repeated injections of thymidine-3H and maintained this labeling index throughout the labeling period. These results are discussed in respect to the proliferative pattern and migrational behavior of lymphocytes and to the problem of autoradiographic inefficiency. Data are compared to those obtained with continuous intravenous infusion of thymidine-3H.
    Type of Medium: Electronic Resource
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