Serum-Vitamin-A-Bestimmungen und ihre Aussagekraft zum Vitamin-A-Status
作者： Th. Gerlach , H. K. Biesalski , K. H. Bässler
DOI: 10.1007/BF02021296
关键词: Gynecology 、 Medicine
摘要: Wie viele Arbeiten uber den Vitamin-A-Metabolismus und Retinol-Serumhomoostase zeigten, unterliegt die Retinol-Serum-Konzentration im physiologischen Bereich der Leberreserven (20–300 Μg/g Leber) einer strengen Regulation. Daher gibt Serumspiegel nur bei einem extremen Mangel oder ubersattigung mit Vitamin A Auskunft Speichervorkommen. Im Grenzbereich, dem marginalen Mangel, kommt es aber schon zur Schadigung peripherer Gewebe, bevor sich Retinol-Serumspiegel verandert. Auch beginnender Hypervitaminose zeigen Veranderungen erst zu spateren Zeitpunkt. ist Bestimmung des Vitamin-A-Serumspiegels kein guter Indikator fur Vitamin-A-Status Beurteilung Notwendigkeit Substitution.
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