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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 206 (1965), S. 311-312 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In our work, modification of the blood pressure response to tyramine, l,l-dimethyl-4-phenyl piperazinium iodide (DMPP), noradrenaline and adrenaline has been accomplished by the pretreatment of dogs (1012 kg), cats (22.5 kg) and rabbits (23.5 kg) with tranylcypromine. Experiments were carried out ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 22 (1966), S. 394-395 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé En quantités inférieures à 10 picogrammes, l'angiotensine inhibe la transmission synaptique du ganglion cervical supérieur du chat, et cet effet est antagonise par la dihydroergotamine. En quantités supérieures à 10 picogrammes, l'angiotensine facilite la transmission synaptique, et de plus, stimule directement les cellules ganglionnaires.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Archives of environmental contamination and toxicology 17 (1988), S. 319-323 
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The toxicity of an untreated bleached kraft pulp mill effluent was evaluated histopathologically, using rainbow trout. Gills, liver, kidney, spleen, digestive tract, and skin were examined in a 96-hr LC50 acute test. Fish exposed to lethal concentrations of effluent had an extensive fusion of gill lamellae. This lesion was also present in fish that survived the 96-hr LC50 acute test but to a lesser extent. Trout exposed for 20, 40, and 60 days to sublethal effluent concentrations were also examined. No lesions that could be attributed specifically to the effluent were observed, but exposed fish had a higher incidence of fin necrosis and damaged gills than the unexposed fish after 40 and 60 days. Loss of resistance to bacterial pathogens may be a significant stress-related effect of this effluent in fish exposed for long periods to low concentrations.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Description / Table of Contents: Résumé La prévalence de la maladie de Parkinson au Québec était de 84/100000 en 1985. Des études ont démontré une fluctuation importante dans la distribution régionale et évoqué des liens à des facteurs environnementaux. Nous avons voulu vérifier l'existence de ces liens, plus spéifiquement avec 3 métaux: le fer, ;e manganèse et l'aluminium. L'estimation de l'exposition environnementale à ces trois métaux et le risque qui en découle, ont 'eté évalués grâce à l'épinette rouge utilisée comme bio-indicateur. Les concentrations de métaux dans les arbres ont permis d'estimer les risques temporles pour chaque ville du territoire étudié. Ces risques, combinés à l'historique de résidence, ont permis de comparer l'exposition des parkinsoniens à celle des non-parkinsoniens. Il en ressort que l'exposition environnementale de ces deux groupes n'est significativement différente.
    Notes: Abstract Parkinson's disease (PD) has been proposed to result from the interaction of aging and environment in susceptible individuals. The prevalence of PD in Quebec was 84 per 100 000 in 1985. The regional variation observed has been linked with several environmental factors. We intended to verify the existence of a relation between the development of PD with exposure to 3 metal pollutants: Fe, Mn, and Al. The choice of these metals rests on their potential presence in the environment caused by the industrial activity in the region studied, and on the fact that it theoretically favors the prevalence of the illness. Environmental exposure to these metals and the resulting risks were evaluated using red spruce as a bio-indicator. The metal concentrations in tree rings were determined by neutron activation analysis. These concentrations permitted a temporal estimation of contamination in each of the territories studied, from 1938 to 1987. The risk of environmental exposure was assumed to be proportional to the concentration of the metal. The calculated risks combined with the history of residence allowed a comparison between parkinsonians and controls. It appeared that environmental exposure to the metals was not significantly different between those two groups.
    Type of Medium: Electronic Resource
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