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  • 11
    Electronic Resource
    Electronic Resource
    Ultrastructural study of patch-graft re-endothelialization (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 775-777 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary On the 8th post-operative day, an endothelial layer covers the ‘venous patch’ luminal part when the adventitia of the patch is sutured to a 5–8 mm-long arteriotomy performed in the common carotid of the rat. The probable origin of this secondary endothelium is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01967973
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    Computed tomographic brain scan findings in Q fever encephalitis (1984)
    Springer
    Neuroradiology 26 (1984), S. 329-332 
    Details
    ISSN: 1432-1920
    Keywords: Q fever ; encephalitis ; computed tomographic brain scan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Neurological involvement in Q Fever is unusual. We present a case of encephalitis due to Coxiella Burnetii with neuroradiologic findings on CT not described previously, consisting in areas of decreased absorption coefficient in the subcortical white matter of both hemispheres, predominantly in the right. Differential diagnosis must be established from viral encephalitis, of similar clinical presentation, which may show similar CT lesions to those in this case.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00339780
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Contribution of junctional conductance to the cellular voltage-divider ratio in frog skins (1983)
    Springer
    Pflügers Archiv 399 (1983), S. 336-341 
    Details
    ISSN: 1432-2013
    Keywords: Frog skin ; Junctional conductance ; Voltagedivider ratio ; Paracellular conductance ; Membrane conductances
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract It has been suggested that distribution of lateral interspace resistance in association with a highly conductive junction can significantly affect the measurement of outer membrane(o)/epithelial(t) voltage divider ratios (F o=δV o/δV t), thereby leading to erroneous inferences regarding the outer membrane fractional resistance [fR o=R o/R c=R o/(R o+R i)], whereR o andR i are the outer and inner cell membrane resistance respectively andR c is the total cell membrane resistance. We present here experimental evidence for this point of view. During seasons when frog skins were highly permeable to Cl, transepithelial conductanceg t often exceeded 2 mS/cm2. High concentrations of external amiloride rapidly blocked cellular transport, butg t initially remained high andF o remained appreciably less than 1.0. These values ofF o were found here to result from low junctional resistanceR j: increase ofR j, either gradually following the administration of amiloride, or abruptly with external replacement of Cl by other anions, was associated with increase ofF o to near unity, without effect on the membrane potential or significant change in the short-circuit current. Experimental results following amiloride validated a simple equivalent circuit model predicting near-linear increase inF o with progressive decrease ing t and led to plausible values ofR j and lateral space resistanceR l. The possible influence of the paracellular resistance pattern on the evaluation of cell membrane resistances from voltage divider ratios is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652761
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  • 14
    Electronic Resource
    Electronic Resource
    Are the pores of intramembrane particles of postsynaptic membrane transmitter-dependent channels? (1983)
    Springer
    Cellular and molecular life sciences 39 (1983), S. 596-598 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The rat neonatal cerebellar cortex has been studied using the freeze fracture technique. In the dendritic postsynaptic membrane, intramembrane particles containing an electron-dense central area have been detected. This type of area could be a platinum aggregate within a channel which, crossing the particle, may connect the postsynaptic cytoplasm with the synaptic cleft.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01971115
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    Paper (German National Licenses)
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  • 15
    Electronic Resource
    Electronic Resource
    A microwave-hyperthermia model of febrile convulsions (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 4 (1983), S. 341-355 
    Details
    ISSN: 0197-8462
    Keywords: microwaves ; microwave hyperthermia ; fever ; febrile convulsions ; Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: While convulsions associated with fever represent a serious problem in pediatric medicine, conventional animal models of febrile convulsions suffer numerous technical limitations. A microwave-hyperthermia model that eliminates these problems was tested. Microwave energy was used to increase the core temperature of 13- and 17-day-old rats, resulting in convulsions similar to febrile convulsions in human infants. Rats were irradiated for 10 min in circularly polarized waveguides at 918 MHz, CW (average SAR = 9.4 W/kg at 13 days and 18.0 W/kg at 17 days as determined by twin-well calorimetry). Day 17 irradiated rats were less susceptible to convulsions than were day 13 irradiated rats, indicating an age-dependent decline in susceptibility. Contrary to findings of earlier models using infrared or hot-oven heating, convulsions induced with microwave hyperthermia impaired neither brain growth nor subsequent performance during behavioral testing. Simultaneous measurement of brain and rectal temperatures during microwave irradiation revealed differential heating rates that favor thermal homeostasis in brain tissue.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bem.2250040406
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    Paper (German National Licenses)
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