title: [Asynchronic changes of absorbing and renal excretion function in aging (author's transl)].
abstract: Founded upon experimental and theoretical investigations the age-dependence of the absorbing system and renal excretion function in human being have been analysed. We used a modified D-xylose-test with oral and parenteral xylose-application and mathematical calculation on the base of results of blood-level analysis. Starting from a compartment model the velocity of D-xylose absorption and excretion could be by means of this functional test examined. The velocity of intestinal absorption and renal excretion decrease with age asynchronous.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007408:Intestinal Absorption; D007668:Kidney / Q000502:physiology*; D007677:Kidney Function Tests; D008875:Middle Aged; D014994:Xylose / Q000378:metabolism
chemical_list: D014994:Xylose
vernacular_title: Asynchrone Veränderungen von Resorptions- und Eliminations-funktion im Alternsgang.