RESUMEN
An inflatable synthetic insert made of ethylene vinyl acetate is presented which prevents posttraumatic air supply and innervation disturbances caused by compression when applying a primarily closed, unpadded plaster cast. The insert, consisting of thin ethylene vinyl acetate, is flexible enough to adapt itself without difficulties to any portion of an extremity. The foil insert is manufactured in different lengths, so that it can be applied both for the upper and the lower extremities. A reliable fixation of the fractured extremity can be guaranteed for weeks and months by the possibility of modifying the interior pressure of the insert within the primarily unpadded, closed plaster cast. Possible contact eczemas resulting from intolerability of synthetic foils are safely avoided by putting a cellulose or Vienna cotton strip between skin and foil insert.
Asunto(s)
Moldes Quirúrgicos , Fracturas Óseas/terapia , Cicatrización de Heridas , Edema/terapia , HumanosRESUMEN
Enzymes of the Krebs-Henseleit urea-cycle were localized by means of differential centrifugation and fractional tissue extraction in rat liver and in human liver. Argininosuccinatlyase (ASAL) and Argininosuccinatsynthetase (ASAS) represent enzymes of the soluble cytoplasmic fraction. Ornithine-ketoacid-transaminase(OKT), carbamyl-phosphate-synthetase (CPS) and ornithine-carbamyl-transferase (OCT) are localized in the mitochondrial and nuclei fractions of the liver cell. Most of the arginase activity is bound to subcellular structures (probably to nuclei). A small portion of arginase-activity was found in the soluble cytoplasmatic fraction. The enzymes of the Krebs-Henseleit urea-cycle are equally distributed in rat liver and in human liver. Differences in the subcellular localisation of (mitochondrial) enzymes in human liver could be attributed to mitochondrial breakage during tissue preparation and do not represent in-vivo conditions.