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  • 1990-1994  (2)
  • Colonization dynamics  (1)
  • Copenhagen rat  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The loss of E-cadherin mRNA transcripts in rat prostatic tumors is accompanied by increased expression of mRNA transcripts encoding fibronectin and its receptor (1994)
    Springer
    Clinical & experimental metastasis 12 (1994), S. 101-107 
    Details
    ISSN: 1573-7276
    Keywords: cadherins ; cancer ; Copenhagen rat ; fibronectin ; integrins ; prostate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We compared the levels of mRNA transcripts encoding E-cadherin, N-cadherin,Β 1 integrin subunit,α 5 integrin subunit and fibronectin in the normal rat prostate gland, as well as in tumors derived from three invasive sublines (G, MatLyLu, AT-2) of the Dunning R-3227 rat prostatic adenocarcinoma. E-cadherin mRNA transcripts were only detectable in total RNA extracts prepared from normal rat prostates, whereas N-cadherin mRNA transcripts were only found in normal rat brains. In contrast, the mRNA transcripts encoding theΒ 1 integrin subunit,α 5 integrin subunit and fibronectin were all elevated in the tumors, as compared to the levels of these transcripts in normal tissues. Our results suggest that there is an inverse correlation between cadherin and integrin mRNA levels in rat prostatic tumors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01753976
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Short-term effects of a catastrophic beaver dam collapse on a stream fish community (1991)
    Springer
    Environmental biology of fishes 31 (1991), S. 123-129 
    Details
    ISSN: 1573-5133
    Keywords: Benthic insects ; Colonization dynamics ; Disturbance ; Floods ; Landscape ecology ; Minnesota
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis We examined the short-term effects of the natural catastrophic collapse of a beaver dam on downstream benthic insect density and fish community structure in a headwater tributary of the Mississippi River. The catastrophic collapse of the dam and ensuing flash flood resulted in a dramatic (〈 90%) decrease in benthic insect density in riffle and pool habitats. Sixty days after collapse of the dam, insect densities in riffles were 62% of pre-collapse densities. Insect recolonization of pools was slower than for riffles; 60 days after collapse of the dam insect densities in pools were 8% of pre-collapse levels. Collapse of the beaver dam altered the structure of the downstream fish community by causing a short-term (2–4 days) influx of pond species, resulting in a brief increase in species richness and abundance. Fish species richness and abundance then decreased for 4–60 days to levels below those prior to the collapse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00001012
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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