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  • 1
    Electronic Resource
    Electronic Resource
    The influence of chronic nicotine treatment on stress-induced gastric ulceration and emptying rate in rats (1992)
    Springer
    Cellular and molecular life sciences 48 (1992), S. 389-391 
    Details
    ISSN: 1420-9071
    Keywords: Nicotine ; cold-restraint stress ; gastric ulcers and motility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Ten-day treatment with nicotine, (5, 25 or 50 μg/ml drinking water) dose-dependently intensified gastric ulceration induced by cold-restraint, and emptying rate. Stomach contractions produced by graded doses of bethanechol i.v. were elevated further by nicotine treatment. It is suggested that chronic nicotine administration produces hypersensitivity of the gastric muscarinic receptors; stomach hypermotility contributes to the ulcer-worsening action of the alkaloid
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01923437
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The effect of nicotine on ethanol-induced gastric ulcers in rats (1985)
    Springer
    Cellular and molecular life sciences 41 (1985), S. 1140-1141 
    Details
    ISSN: 1420-9071
    Keywords: Nicotine ; ethanol ; gastric ulcers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Nicotine, in concentrations of 5 and 25 μg/ml drinking water, given ad libitum for 10 days, dose-dependently increased lesion formation and worsened ethanol-induced ulceration in rat stomachs. Daily fluid intake and b.wt gain were not adversely affected by nicotine pretreatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01951697
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Observations of the water expulsion vacoule ofPhytophthora palmivora (1989)
    Springer
    Protoplasma 149 (1989), S. 47-56 
    Details
    ISSN: 1615-6102
    Keywords: Phytophthora palmivora ; Water expulsion vacuole ; Coated vesicles ; Freeze substitution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The water expulsion vacuole ofPhytophthora palmivora was studied with the light microscope after the motility of the spores had been slowed by using a low Ca2 + medium. For transmission electron microscopy, the zoospores were prepared using freeze substitution. The water expulsion vacuole consisted of a central vacuole that collapsed and emptied its contents to the external medium. The central vacuole was surrounded by a series of interconnected vacuoles that are called the surrounding vacuole. The surrounding vacuole and the central vacuole were always associated with coated pits. The vesicles found in the region between the central and surrounding vacuole were exclusively coated vesicles. Consistent changes in the organization of the water expulsion vacuole led us to conclude that, as the central vacuole collapses, the surrounding vacuole is transformed and becomes the new central vacuole. No evidence was obtained for contraction of the central vacuole. The processes involved in membrane recycling during the functioning of the water expulsion vacuole are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01623982
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    Paper (German National Licenses)
    Fulltext
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