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  • Catechol-O-methyltransferase inhibitor  (1)
  • Pallidonigroluysian degeneration  (1)
  • Recombinant DNA  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Gene 95 (1990), S. 73-77 
    ISSN: 0378-1119
    Keywords: Recombinant DNA ; gel-shift assay ; nuclear protein ; replication origin
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0533
    Keywords: Symptomatic Parkinson's disease ; Pallidonigroluysian degeneration ; Basal ganglia ; Iron
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In the basal ganglia of three autopsy cases of pallidonigroluysian degeneration, we found marked iron deposition, a finding which has not been mentioned previously in the literature. Besides severe astrogliosis and neuronal loss in the pallidum, Luysian body and nigra, granular deposits of brown pigments were found in the neuropil, microglias, oligodendrocytes and astrocytes in three such the nuclei and the striatum. These brown pigments proved histochemically to be iron. Our histochemical semiquantitative study showed a significantly stronger reation for iron in the degenerated nuclei in these three cases than in control cases comprising non-degenerative and the other degenerative diseases. Quantitative study with inductively coupled emission spectrometry also demonstrated a markedly higher iron content in the globus pallidus and the striatum in comparison with the control cases. The possibility is discussed that iron deposition plays a role in generating the lesions of pallidonigroluysian degeneration.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1435-1463
    Keywords: Catechol-O-methyltransferase inhibitor ; 3-O-methyldopa ; levodopa ; Parkinson's disease ; tolcapone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effects of tolcapone, a catechol-O-methyltransferase inhibitor, on the bioavailability and efficacy of levodopa were evaluated in 12 patients with Parkinson's disease (PD), 8 of whom showed signs of daily motor fluctuations (wearing-off phenomenon). Motor disabilities were assessed in 12 patients at 7 time points before and after the chronic administration of tolcapone using the Unified Parkinson's Disease Rating Scale (UPDRS). The UPDRS score was improved at all points of determination. Eight patients with wearing-off phenomenon on levodopa showed symptomatic improvement on the combination. The area under the curve (AUC) for levodopa increased by 34% (p=0.0059) after the administration of tolcapone. The elimination half-life (T1/2) of levodopa was significantly prolonged by 81% (p=0.0001) after the treatment. The AUC of 3-O-methyldopa, a metabolite of levodopa, was decreased by 79% (p=0.0001) and the Cmax (maximum concentration) was also decreased by 80% after the administration (p=0.0001) of tolcapone. The combination of tolcapone and levodopa was well tolerated. Our findings suggest that tolcapone improves the pharmacokinetics of levodopa in plasma and motor symptoms of fluctuating PD patients. It is suggested that tolcapone may be a useful drug adjunct to levodopa in treating patients with PD with wearing-off phenomena.
    Type of Medium: Electronic Resource
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