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  • Articles: DFG German National Licenses  (3)
  • 1990-1994  (3)
  • Striatum  (2)
  • nitrate leaching  (1)
Source
  • Articles: DFG German National Licenses  (3)
Material
Years
  • 1990-1994  (3)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Cortical and striatal neurone number in Huntington's disease (1994)
    Springer
    Acta neuropathologica 88 (1994), S. 320-333 
    Details
    ISSN: 1432-0533
    Keywords: Key words Huntington's disease ; Human cerebral cortex ; Striatum ; Neurone number ; Stereology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The total cortical and striatal neurone and glial numbers were estimated in five cases of Huntington's disease (three males, two females) and five age- and sex-matched control cases. Serial 500-μm-thick gallocyanin-stained frontal sections through the left hemisphere were analysed using Cavalieri's principle for volume and the optical disector for cell density estimations. The average cortical neurone number of five controls (mean age 53±13 years, range 36 – 72 years) was 5.97×109±320×106, the average number of small striatal neurones was 82×106±15.8×106. The left striatum (caudatum, putamen, and accumbens) contained a mean of 273×106±53×106 glial cells (oligodendrocytes, astrocytes and unclassifiable glial profiles). The mean cortical neurone number in Huntington's disease patients (mean age 49±14 years, range 36 – 75 years) was diminished by about 33  % to 3.99×109±218×106 nerve cells (P≤ 0.012, Mann-Whitney U-test). The mean number of small striatal neurones decreased tremendously to 9.72 × 106± 3.64×106 ( – 88  %). The decrease in total glial cells was less pronounced (193 × 106±26 × 106) but the mean glial index, the numerical ratio of glial cells per neurone, increased from 3.35 to 22.59 in Huntington's disease. Qualitatively, neuronal loss was most pronounced in supragranular layers of primary sensory areas (Brodmann's areae 3,1,2; area 17, area 41). Layer IIIc pyramidal cells were preferentially lost in association areas of the temporal, frontal, and parietal lobes, whereas spared layer IV granule cells formed a conspicuous band between layer III and V in these fields. Methodological issues are discussed in context with previous investigations and similarities and differences of laminar and lobar nerve cell loss in Huntington's disease are compared with nerve cell degeneration in other neuropsychiatric diseases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00310376
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Cortical and striatal neurone number in Huntington's disease (1994)
    Springer
    Acta neuropathologica 88 (1994), S. 320-333 
    Details
    ISSN: 1432-0533
    Keywords: Huntington's disease ; Human cerebral cortex ; Striatum ; Neurone number ; Stereology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The total cortical and striatal neurone and glial numbers were estimated in five cases of Huntington's disease (three males, two females) and five age-and sex-matched control cases. Serial 500-μm-thick gallocyanin-stained frontal sections through the left hemisphere were analysed using Cavalieri's principle for volume and the optical disector for cell density estimations. The average cortical neurone number of five controls (mean age 53±13 years, range 36–72 years) was 5.97×109±320×106, the average number of small striatal neurones was 82×106±15.8×106. The left striatum (caudatum, putamen, and accumbens) contained a mean of 273×106±53×106 glial cells (oligodendrocytes, astrocytes and unclassifiable glial profiles). The mean cortical neurone number in Huntington's disease patients (mean age 49±14 years, range 36–75 years) was diminished by about 33% to 3.99×109±218×106 nerve cells (P≦0.012, Mann-Whitney U-test). The mean number of small striatal neurones decreased tremendously to 9.72×106±3.64×106 (−88%). The decrease in total glial cells was less pronounced (193×106±26×106) but the mean glial index, the numerical ratio of glial cells per neurone, increased from 3.35 to 22.59 in Huntington's disease. Qualitatively, neuronal loss was most pronounced in supragranular layers of primary sensory areas (Brodmann's areae 3,1,2; area 17, area 41). Layer IIIc pyramidal cells were preferentially lost in association areas of the temporal, frontal, and parietal lobes, whereas spared layer IV granule cells formed a conspicuous band between layer III and V in these fields. Methodological issues are discussed in context with previous investigations and similarities and differences of laminar and lobar nerve cell loss in Huntington's disease are compared with nerve cell degeneration in other neuropsychiatric diseases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00310376
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Effect of the nitrification inhibitors 1-amidino-2-thiourea and dicyandiamide in combination with urea and ammonium sulfate (1990)
    Springer
    Nutrient cycling in agroecosystems 21 (1990), S. 179-183 
    Details
    ISSN: 1573-0867
    Keywords: 1-amidino-2-thiourea ; dicyandiamide ; nitrification inhibitor ; urea ; ammonium sulfate ; N-fertilizer ; nitrate leaching
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The efficiency of the nitrification inhibitors dicyandiamide (DCD) and 1-amidino-2-thiourea (or guanylthiourea = GTU) in reducing losses from N fertilizers was investigated in two greenhouse experiments where leaching of nitrate-N was induced by percolation at 3 and 5 weeks after fertilization. At an application rate of 10% by weight of fertilizer-N (e.g. 10 kg GTU/ha), GTU in combination with ammonium sulfate (AS) had effects similar to those of DCD (e.g. 15 kg DCD/ha) with regard to nitrate leaching, plant yields and nitrogen uptake. However, in combination with urea (U), GTU was more effective than DCD when applied at the same ratio except with a humic sandy clay soil (pH 7.3, 4.4% organic C), where GTU did not perform as effectively. Nitrate leaching was reduced by as much as 50% using U/GTU instead of U/DCD, and plant yield increased by 30%. At temperatures between 17 and 25°C, the combination U/GTU could protect a high percentage of the nitrogen from being nitrified and leached over a 3 to 5 weeks period. The superiority of GTU over DCD was demonstrated especially in the treatments with 5 weeks of preincubation, despite the considerably lower application rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01087429
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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