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  • Cytochrome oxidase  (1)
  • Serum digoxin  (1)
  • herpes simplex virus  (1)
  • 1
    ISSN: 0014-5793
    Keywords: Cytochrome oxidase ; Potassium cyanide ; Rat brain ; Surface coil ; ^3^1P NMR spectroscopy in vivo
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 10 (1976), S. 97-100 
    ISSN: 1432-1041
    Keywords: Serum digoxin ; outpatients ; general practice patients ; patient compliance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Serum digoxin levels were determined in 33 outpatients of a general practice in the countryside, on three occasions at intervals of 8 weeks. All the patients were on long term digoxin treatment, about 2 years on average. About 14 days after the first and the second visits the results of the measurements were sent to the patients, with a comment about their reliability in taking treatment according to the serum digoxin level. At the first visit half of the serum digoxin level were lower than 0.5 ng/ml; the mean serum concentration was 0.52 ng/ml. There was no correlation between serum concentration and age, dose or creatinine level; but there was with replies to the question about regularity of drug intake. The mean serum level at the second and the third visits was 0.88 ng/ml and 0.89 ng/ml, respectively. A correlation was found between the dose and the serum digoxin level. From these results it seems that compliance by the patient plays a major role in producing steady state levels of drugs.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1590-3478
    Keywords: Brain tumors ; viral genomic sequences ; herpes simplex virus ; simian virus 40 ; adenovirus type 2 ; DNA hybridization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Poco si sa su oncogenesi dei tumori cerebrali. Si pensa che i virus siano coinvolti in alcune malattie neurologiche e la presenza di sottofrazioni di DNA virale è stata riportata in varie cirkostanze e l'oncogenicità di alcuni virus è stata dimostrata in animali da esperimento. Inoltre la scoperta di omologia tra gli oncogeni retrovirali e i normali geni cellulari ha stimolato la ricerca sulla responsabilità virale dell'oncogenesi. Gli Autori hanno sistematicamente esaminato 39 tumori cerebrali usando la ibridizzazione con DNA di 3 virus coinvolti in malattie neurologiche: quello dell'herpes simplex (HSV), il virus 40 (SV40) e l'adenovirus tipo 2 (Ad2). Non si è trovata omologia tra i DNA del materiale esaminato e il DNA virale. Sono stati allora comparati questi risultati negativi con quelli positivi di altri Autori riferendosi soprattutto alla possibilità di una ibridizzazione non specifica che può giustificare i risultati positivi riportati. Questa ricerca negativa può essere interpretata sia come un'assenza di coinvolgimento dei tre virus investigati nella oncogenesi dei tumori cerebrali, sia come espressione di una disposizione delle sequenze virali nel genoma ospite con conseguente prevenzione della ibridizzazione, come è stato supposto avvenga durante le fasi di latenza del virus herpetico.
    Notes: Abstract Little is known about oncogenesis in brain tumors. Viruses are thought to be involved in some neurological diseases, the presence of subfractions of viral DNA has been reportedin various circumstances and the oncogenicity of some viruses has been demonstrated in animal experiments. The discovery of homologies between retroviral ancogenes and normal cellular genes (proto-oncogenes) has stimulated once again the search for viral responsability in oncogenesis. Having a large bank of tumor material available, we systematically examined 39 brain tumors usign Southern blot hybridization with DNAs of three viruses, known to be involved in neurological diseases: herpes simplex virus (HSV), simian virus 40 (SV40) and adenovirus type 2 (Ad 2). We detected no homology between the DNAs of the examined material and the viral DNA probes. We compare these negative results with those of other published studies and discuss the experimental conditions, with special reference to the possibility of non-specific hybridization, which could account for the positive results reported. The present negative results could be interpreted either as absence of involvement of the three investigated viruse in brain tumor oncogenesis, or an indirect involvement through a hit-and-run mechanism or a highly dispersed state of the viral sequences among the host genome, which would prevent hybridization with the probe, as it has been supposed to be the case during the latency phase of herpes virus.
    Type of Medium: Electronic Resource
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