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Erschienen in: Der Ophthalmologe 9/2012

01.09.2012 | Leitthema

Biologische Grundlagen der Limbusstammzellinsuffizienz

verfasst von: H. Thomasen, K.-P. Steuhl, D. Meller

Erschienen in: Die Ophthalmologie | Ausgabe 9/2012

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Zusammenfassung

Limbustammzellinsuffizienz entsteht durch den Verlust der Population geweberegenerierender Stammzellen. Die Regeneration des kornealen Epithels erfolgt durch epitheliale Stamm- und Vorläuferzellen (SPZs), die im korneoskleralen Limbus lokalisiert sind. Sie besitzen eine Reihe von Stammzelleigenschaften und sind in der Lage, durch externe Signale zur Proliferation angeregt zu werden. Der Limbus ist die Stammzellnische der SPZs. Er formt eine Mikroumgebung, in der die Stammzelleigenschaften der SPZs erhalten bleiben. Die Regulation der limbalen SPZs erfolgt durch ein Netzwerk verschiedener Signale innerhalb der Nische, das über Proliferation, Differenzierung oder Quieszenz der SPZs entscheidet.
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Metadaten
Titel
Biologische Grundlagen der Limbusstammzellinsuffizienz
verfasst von
H. Thomasen
K.-P. Steuhl
D. Meller
Publikationsdatum
01.09.2012
Verlag
Springer-Verlag
Erschienen in
Die Ophthalmologie / Ausgabe 9/2012
Print ISSN: 2731-720X
Elektronische ISSN: 2731-7218
DOI
https://doi.org/10.1007/s00347-011-2507-6

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