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  • 2000-2004  (1)
  • 1995-1999  (2)
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 117 (1995), S. 2122-2122 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of periodontal research 34 (1999), S. 0 
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This report describes our findings regarding the potential contribution of periodontitis to atherosclerotic processes using a nonhuman primate model. The goal of the investigations was to target general mechanisms which could describe the association of these disease processes, including: (i) systemic translocation of bacteria/products during periodontitis; (ii) alterations in systemic inflammatory biomarkers during periodontitis; and (iii) the relationship of periodontitis to serum lipids /lipoproteins. Increases in serum endotoxin (e.g. LPS) during ligature-induced periodontitis were observed in these animals. We determined serum levels of various acute phase reactants and chemokines (e.g. CRP. α1-antitrypsin, haptogiobin, fibrinogen, IL-8). A number of these host factors were significantly increased during gingivitis and/or periodontitis. Finally, we observed specific changes in serum lipid levels (cholesterol, triglycerides, HDL, LDL) and lipoproteins (apoA-I) during periodontitis, which were exacerbated by exposure of the animals to a diet with elevated fat content. Thus, we have described systemic manifestations of periodontitis that include detection of bacterial products, inflammatory biomarkers, and dyslipoproteinemia consistent with an increased atherogenic risk.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 223 (2000), S. 221-227 
    ISSN: 1615-6110
    Keywords: Orchids ; Spiranthinae ; pollination ; hummingbirds ; Stenorrhynchos lanceolatus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Hummingbird pollination is documented for a natural population ofStenorrhynchos lanceolatus Aublet. L. C. Rich. occurring in Rio de Janeiro State, southeastern Brazil. At the study site the plants are pollinated byPhaethornis eurynome (Phaethorninae),Thalurania glaucopis (females only) andLeucochloris albicollis (Trochilinae). The plants offer nectar as a reward and the pollinaria become stuck to the surface of the hummingbird's bill while it is probing the flowers. The orchid population received a few (0–4) hummingbird visits per day, with about 83% of the flowers being pollinated. In spite of the low frequency of visits, the granular structure of the pollinarium plus the behaviour of the most frequent pollinators, which tend to visit all the fresh-looking flowers of each inflorescence, a very high fruiting success was promoted. Experimental evidence suggests that the pollinaria may remain up to 6.30 hours on the hummingbird's bill, enhancing the chances of cross-pollination and long-distance pollen flow.
    Type of Medium: Electronic Resource
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