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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 86 (1993), S. 36-41 
    ISSN: 1432-0533
    Keywords: Alzheimer's disease ; β/A4 deposits ; Morphological types ; Spatial pattern ; Clustering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The spatial patterns of diffuse, primitive, classic (cored) and compact (burnt-out) subtypes of β/A4 deposits were studied in coronal sections of the frontal lobe and hippocampus, including the adjacent gyri, in nine cases of Alzheimer's disease (AD). If the more mature deposits were derived from the diffuse deposits then there should be a close association between their spatial patterns in a brain region. In the majority of tissues examined, all deposit subtypes occurred in clusters which varied in dimension from 200 to 6400 μm. In many tissues, the clusters appeared to be regularly spaced parallel to the pia or alveus. The mean dimension of the primitive deposit clusters was greater than those of the diffuse, classic and compact types. In about 60% of cortical tissues examined, the clusters of primitive and diffuse deposits were not in phase, i.e. they alternated along the cortical strip. Clusters of classic deposits appeared to be distributed independently of the diffuse deposit clusters. Cluster size of the primitive deposits was positively correlated with the density of the primitive deposits in a tissue but no such relationship could be detected for the diffuse deposits. This study suggested that there was a complex relationship between the clusters of the different subtypes of β/A4 deposits. If the diffuse deposits do give rise to the primitive and classic varieties then factors unrelated to the initial deposition of β/A4 in the form of diffuse plaques were important in the formation of the mature deposits.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 46 (1994), S. 209-213 
    ISSN: 1432-1041
    Keywords: Insomnia ; Temazepam ; elderly ; efficacy ; tolerance ; intermittent administration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Temazepam, 7.5 mg was evaluated in the sleep laboratory in 8 elderly insomniacs, using a 14-night protocol (4 placebo-baseline nights, 7 drug nights, and 3 placebo-withdrawal nights). With short-term use temazepam was found to be effective, producing a significant improvement in total wake time from baseline (100 vs. 145 min). With continued drug administration, total wake time remained below baseline but not significantly so (125 vs. 145 min). During drug administration, there were no major CNS and behavioral adverse effects reported such as daytime sedation, memory impairment or hyperexcitability (daytime anxiety). Following drug withdrawal, there was no significant increase in wakefulness, i.e., no rebound insomnia (150 vs. 145 min). In summary, temazepam, 7.5 mg is effective in elderly subjects with short-term use and has a minimum of adverse effects. Use of hypnotic drugs is an adjunctive therapy which should be for a short-term period with subsequent short-term intermittent use as needed. Because of its low propensity for producing rebound insomnia, temazepam can be effectively used in this manner.
    Type of Medium: Electronic Resource
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