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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neural transmission 67 (1986), S. 275-285 
    ISSN: 1435-1463
    Keywords: Post mortem ; 3H-acetylcholine ; release ; physostigmine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A technique was developed, which made it possible to study thein vitro release of3H-acetylcholine (3H-ACh) from human post mortem brain tissue, collected with short post-mortem delay (2,5–22 hours), both from controls and patients with Alzheimer's disease (AD/SDAT). The tritium (3H) release was investigated during potassium stimulation, and AD/SDAT cortical slices were found to release a decreased amount of3H compared to control brain slices. Physostigmine, 10−5 and 10−4 M, has no significant effect on the release of3H from control slices, while physostigmine 10−4 M increased the evoked release from AD/SDAT brain slices over threefold, nearly to the control level.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-3017
    Keywords: fish ; Oryzias latipes ; Poecilia reticulata ; laboratory ; toxicological pathology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: This paper presents an overview of the studies carried out in small laboratory fish species to investigate the usefulness of histopathology as a tool in aquatic toxicology. The studies were performed with medaka (Oryzias latipes) and guppy (Poecilia reticulata) that were exposed to a variety of environmental contaminants for one and three months. Besides the measurement of routine toxicological parameters, total body histopathology was carried out. The data are summarized and evaluated in view of their contribution to the knowledge of toxicology, the specific responsiveness of animals and tissues, and the application in ecotoxicology. It is concluded that histopathology of (small) fish exposed to environmental contaminants may provide useful information as to target organs and mechanism of action: moreover, this technique can be more sensitive than routine parameters.
    Type of Medium: Electronic Resource
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