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  • 78.70  (1)
  • Cyclic voltammetry  (1)
  • Dipeptidyl ¶peptidase IV  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Novel broad-spectrum metal-based antifungal agents (1991)
    Springer
    BioMetals 4 (1991), S. 141-143 
    Details
    ISSN: 1572-8773
    Keywords: Antifungal agents ; Cyclic voltammetry ; Copper thiosemicarbazone complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary Copper(II) complexes of the type [Cu(L)X], where L=tridentate anion of 2-acetylpyridineN 4-diethyl thiosemicarbazone and X=C1 or Br, were screened against seven fungal strains pathogenic to man viz.Aspergillus niger, Aspergillus fumigatus, Candida albicans, Cryptococcus neoformans, Tricophyton rubrum, Epidermophyton foccosum andMicrosporum canis. The greater growth inhibition exhibited by the bromo complex can be explained on the basis of its lower Cu(II)/Cu(I) redox couple and greater covalent bonding. These compounds represent a novel class of metal-based antifungal agents which provide opportunities for a large number of synthetic variations for modulation of the activities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01141304
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  • 2
    Electronic Resource
    Electronic Resource
    A positron annihilation study of carbon black and carbon-black-filled polybutadiene (1979)
    Springer
    Applied physics 18 (1979), S. 85-92 
    Details
    ISSN: 1432-0630
    Keywords: 78.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Studies have been made on positron lifetimes in carbon blacks and carbon black filled polybutadiene. The results for the carbon blacks can be interpreted with the aid of the theoretical results of Brandt and Paulin: Phys. Rev. B5, 2430 (1972) and show that while positron annihilation occurs principally from a bound state, diffusion in the carbon black is extremely small. A numerical upper limit on the diffusion coefficient has been obtained. The data from the rubber is discussed with the aid of a specially developed extension of the previous theory. Here one finds that whereas the variations in the long-component intensity with carbon black loading can be very satisfactorily explained, there is again no evidence for any diffusion effects in the rubber, and an upper limit can be placed on the diffusion coefficient here also. Indeed the variation in the long-component intensity with particle size goes the opposite way to what one would expect if diffusion were dominant. This effect is attributed to the increase in the amount of bound rubber as the particle size is reduced, and the consequent increase in the number of annihilation sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00935908
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Lowered Serum dipeptidyl peptidase IV activity in patients with anorexia and bulimia nervosa (2000)
    Springer
    European archives of psychiatry and clinical neuroscience 250 (2000), S. 86-92 
    Details
    ISSN: 1433-8491
    Keywords: Key words Anorexia ; Bulimia ; Peptidases ; Dipeptidyl ¶peptidase IV ; Neuropeptides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this study was to examine whether anorexia nervosa and bulimia nervosa are accompanied by lower serum activity of dipeptidyl peptidase IV (DPP IV, EC 3.4.14.5), a membrane-bound serine protease that catalyses the cleavage of dipeptides from the amino-terminus of oligo- and polypeptides. Substrates of DPP IV are, amongst others, neuroactive eptides, such as substance P, growth hormone releasing hormone, neuropeptide Y, and peptide YY. DPP IV activity was measured in the serum of 21 women with anorexia nervosa, 21 women with bulimia nervosa and 18 normal women. Serum ¶DPP IV activity was significantly lower in patients with anorexia nervosa and bulimia nervosa than in the normal controls. In the total study group, there were significant and inverse relationships between serum DPP IV activity and the total scores on the Bulimic Investigatory Test, Edinburgh, the Eating Disorder Inventory (EDI) and the Hamilton Depression Rating Scale. In the total study group no significant correlations between DPP IV and age, body weight or body mass index could be found. It is concluded that lowered serum DPP IV activity takes part in the pathophysiology of anorexia and bulimia nervosa. It is hypothesised that a combined dysregulation of DPP IV and neuroactive peptides, which are substrates of DPP IV, e.g. neuropeptide Y and peptide YY, could be an integral component of eating disorders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004060070040
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    Paper (German National Licenses)
    Fulltext
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