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Abstract

Collagen types in normal human and keratoconus corneas were separated by salt fractionation and thermal gelation in the pepsin-soluble fraction of the lyophilized tissues. Peptic digestion indicated no significant differences between normal and keratoconus corneas. Further collagen characterization was performed using SDS-PAGE. Collagen concentrations were determined via hydroxyproline. Soluble collagens from normal human cornea represent 85% collagen type I, maximally 10% collagen type III and 5% collagen type V. Soluble collagens of keratoconus corneas consist of 90% type I collagen and maximally 5% type III and type V collagen.

Zusammenfassung

Der Kollagentypengehalt von normalen menschlichen Hornhäuten und von Hornhäuten mit Keratokonus wurde nach Pepsinverdauung mittels fraktionierter Salzfällung und thermischer Gelierung nach Trelstad im lyophilisierten Gewebe bestimmt. Bei der Pepsinverdauung ergaben sich keine signifikanten Unterschiede zwischen Hornhäuten mit Keratokonus und Kontrollen. Die weitere Kollagencharakterisierung erfolgte mit SDS-Polyacrylamidgelelektrophorese. Die Kollagen-Konzentrationen wurden über den Hydroxypolinanteil ermittelt. Das lösliche Kollagen der normalen lyophilisierten Hornhaut ent-halt ungefähr 85% Kollagen Typ I, etwas weniger als 10% Kollagen Typ III und an die 5% Kollagen Typ V. Lösliches Kollagen von Hornhäuten mit Keratokonus bestehen aus ca. 90% Typ I-Kollagen und maximal je 5% Typ III und Typ V-Kollagen.

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Radda, T.M., Menzel, E.J., Freyler, H. et al. Collagen types in keratoconus. Graefe's Arch Clin Exp Ophthalmol 218, 262–264 (1982). https://doi.org/10.1007/BF02175894

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  • DOI: https://doi.org/10.1007/BF02175894

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