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  • 1
    Electronic Resource
    Electronic Resource
    Association of protein amount polymorphism (PAP) among maize lines with performances of their hybrids (1991)
    Springer
    Theoretical and applied genetics 82 (1991), S. 552-560 
    Details
    ISSN: 1432-2242
    Keywords: Zea mays L ; Two-dimensional electrophoresis ; Protein amount ; Genetic variability ; Heterosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary It has been suggested that molecular foundations of phenotypic diversity reside in the variability of genome expression. This variability can be appraised through the polymorphism of individual protein amounts (PAP: protein amount polymorphism). Eight maize inbred lines and ten of their single-cross hybrids were analyzed by two-dimensional polyacrylamide gel electrophoresis in order to examine the potential of PAP for predicting hybrid vigor. The 28 possible pairs of lines were characterized for: (i) the number, H of expected heterozygous structural loci in their hybrid, in the sample of loci revealed by 2D-PAGE; (ii) four distance indices based on PAP; (iii) the hybrid values for five agromorphological characters measured in four different year/locations. For the subset of ten hybrids analyzed by 2D-PAGE, the number of cases of nonadditive inheritance (NA) was also counted. Whereas H appeared to be related neither to the PAP indices, nor to NA, nor to hybrid performances, PAP indices were correlated to NA, and both were positively associated to hybrid performances. The possibility that PAP is responsible for quantitative trait variation is discussed. This could result in the definition of biological predictors of heterosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226790
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  • 2
    Electronic Resource
    Electronic Resource
    Aging of combustion particles in the atmosphere — Results from a field study in Zürich (1993)
    Springer
    Water, air & soil pollution 68 (1993), S. 137-147 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract At different locations in Zürich (urban and suburban area) ambient aerosol has been measured by a variety of methods. Total mass concentration, black carbon mass concentration, size distribution, Fuchs surface and photoelectric charging of particles (as a measure for the PAH concentration) have been determined. As a reference for “fresh” aerosol, measurements have also been carried out in a car parking garage. By comparing the data obtained at different locations and different times of the day aging processes can be investigated. All measured signals show significant peaks during the rush-hours, indicating that the majority of the particles arise from automotive traffic. Aging is expressed by decreasing number concentrations, increasing diameter (coagulation) and decreasing black carbon and PAH content of the particles. The decrease in PAH and black carbon fraction may be due to mixing of the aerosol with non-combustion particles or by condensation of material from the gas phase on the particle; the decrease in PAH concentration may also be due to degradation of the PAHs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00479398
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Late onset globoid leukodystrophy: unusual clinical and CSF findings (1990)
    Springer
    Neurological sciences 11 (1990), S. 57-59 
    Details
    ISSN: 1590-3478
    Keywords: Globoid cell leukodystrophy ; Krabbe disease ; CSF immunoglobulins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Gli autori riportano lo studio clinico e biochimico di un caso di malattia di Krabbe tardiva. L'esordio acuto dei sintomi neurologici, dopo una affezione febbrile respiratoria, il profilo immunochimico del liquor con produzione locale di IgG e la risposta iniziale al trattamento con ACTH hanno fatto supporre una genesi infiammatoria. È stata tuttavia diagnosticata in seguito una malattia di Krabbe. Gli Autori discutono brevemente il significato di una possibile produzione di IgG nel Sistema Nervoso Centrale in questo caso.
    Notes: Abstract During a febrile upper respiratory tract illness this 4 year old boy developed left hemiparesis, which progressed to loss of walking and even of sitting finally to tetraplegia. The cerebrospinal fluid protein pattern showed blood-brain barrier damage with additional intrathecal IgG synthesis. The symptoms responded to steroid therapy but resumed and worsened on withdrawal. Only late, when visual evoked potentials and nerve conduction velocity proved to be impaired, was Krabbe disease diagnosed on the assay of cultured fibroblasts for galactocerebroside-beta-galactosidase. We discuss the significance of possible endogenous production of IgG in the CNS.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02334906
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    Paper (German National Licenses)
    Fulltext
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