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  • 11
    Electronic Resource
    Electronic Resource
    Stimulation of glycolysis by corticotropin and phorbol ester in cultured neurons
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Molecular Cell Research 1133 (1992), S. 321-328 
    Details
    ISSN: 0167-4889
    Keywords: 6-Phosphofructo-1-kinase ; Corticotropin ; Fructose 2,6-bisphosphate ; Glycolysis ; Neuron ; Phorbol ester
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0167-4889(92)90054-F
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  • 12
    Electronic Resource
    Electronic Resource
    Experience with a new device for colostomized patients: External magnetic ring (1981)
    Springer
    World journal of surgery 5 (1981), S. 769-771 
    Details
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Dans cet article nous avons examiné les résultats préliminaires concernant un nouveau dispositif servant à couvrir les colostomies. Ce dispositif ne peut être utilisé que pour les colostomies permanentes à condition que l'orifice soit plat et son diamètre inférieur à 3 cm. L'anneau magnétique s'est avéré léger, souple, discret et très efficace pour la prévention des odeurs et des bruits. La partie adhésive peut rester en place pendant plusieurs jours et permet le nettoyage de la colostomie ou l'utilisation de sacs de colostomie.
    Notes: Abstract In this paper we have examined the preliminary results concerning a new covering device for colostomies. This device can only be used for end colostomies, provided that the stoma is flat and its diameter is less than 3 cm. The magnetic ring proved to be light, flexible, discreet, and very effective on odor and noise prevention. The adhesive part can be left in place for several days and permits colostomy washouts or the use of colostomy bags.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01657954
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  • 13
    Electronic Resource
    Electronic Resource
    Developmental changes in cultured neurones from chick embryo cerebral hemispheres (1981)
    Springer
    Experimental brain research 42 (1981), S. 63-72 
    Details
    ISSN: 1432-1106
    Keywords: Cell culture ; Chick embryo cerebral hemispheres ; Synaptogenesis ; Tyrosine hydroxylase ; Neuronal development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The acquisition of ultrastructural and neurochemical properties was studied during the development of neurones from 8-day-old chick embryo cerebral hemispheres, cultivated on polylysine-coated surfaces. The first contacts suggestive of synaptic profiles were observed after 3 days of culture. From the 6th day, junctions with significant thickening of the postsynaptic element and many presynaptic vesicles could be seen. Synaptic endings contained predominantly dense-cored vesicles. These cultured neurones acquired dopaminergic properties during their development: (1) 95% of the cells exhibited glyoxylic acid-induced fluorescence; (2) tyrosine hydroxylase and dopa decarboxylase activities were present and increased with time in culture, but dopamine-β-hydroxylase activity was undetectable. Choline acetyltransferase activity remained at a very low level at all stages of culture. It is suggested that when cultured in the total absence of glial cells, the neurones of embryonic chick cerebral hemispheres give no evidence of cholinergic mechanisms, but display a number of dopaminergic characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235730
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  • 14
    Electronic Resource
    Electronic Resource
    Possible role of sialocompounds in the uptake of choline into synaptosomes and nerve cell cultures (1982)
    Springer
    Neurochemical research 7 (1982), S. 301-316 
    Details
    ISSN: 1573-6903
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Incubation of primary nerve cell cultures and of crude synaptosomal preparations with neuraminidase released sialic acid from both gangliosides and sialoglycoproteins. After this treatment, the pattern of ganglioside distribution was severely modified with a decrease of polysialogangliosides (GD1b, GT1b, GT1L, GQ1) and a dramatic increase in monosialoganglioside GM1. The choline influx into neuraminidase treated cells and organelles was reduced by 30–50% but the efflux was unmodified. In particular the high affinity mechanism of choline uptake disappeared and the low affinity mechanism was modified in both cases. The disappearance of the high affinity uptake mechanism was not followed by a decreased acetylcholine synthesis as it should be if the current theories on choline uptake and acetylcholine synthesis are correct. Our present data thus confirm our previous hypothesis that choline metabolism regulates choline uptake rather than the other way round as is suggested by the theories most widely accepted at present. Choline uptake was unaffected by pretreatment of cells and organelles with tetanus toxin suggesting that the effect of neuraminidase on the choline uptake were either mediated through glycoproteins or through gangliosides other than those which bind to tetanus toxin (GD1b and GT1b). Several speculative models for explaining the effect of neuraminidase on choline uptake are proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00965642
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  • 15
    Electronic Resource
    Electronic Resource
    Facilitated carbon dioxide transport in bovine albumin solutions (1985)
    Springer
    Annals of biomedical engineering 13 (1985), S. 551-571 
    Details
    ISSN: 1573-9686
    Keywords: Carbon dioxide ; Albumin ; Facilitated transport ; Bicarbonate ; Diffusion potentials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Steady-state CO2 diffusion in the presence of a CO2 gradient was measured in thin layers of bovine albumin solutions containing different amounts of buffer base, added as NaHCO3, and/or of NaCl. In the same solutions, electrical potentials due to the CO2 diffusion across the layers were measured. Addition of carbonic anhydrase induced a chemical reaction equilibrium to exist for the CO2 reaction system, and led to equilibrium values for facilitated CO2 transport due to a bicarbonate flux and to maximum values for the diffusion potential. The diffusion potentials are generated due to the large differences in the ionic mobilities of albumin and other ionic species such as bicarbonate. The diffusion potential markedly reduces the facilitated CO2 flux. The presence of sodium chloride had no significant effect on the CO2 transport rate. The total mass transfer rates of CO2 in albumin solutions were considerably lower than those found by Stroeve and Ziegler (23) in hemoglobin solutions at identical concentrations of buffer base.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00000005
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