Synthesis of elastoidic fibers in the organculture of human dermis
- 1 January 1979
- journal article
- abstracts
- Published by Springer Nature in Archives of Dermatological Research
- Vol. 265 (3) , 299-308
- https://doi.org/10.1007/bf00412387
Abstract
Organ cultures of human dermal excisions placed on the chorioallantoic membrane (CAM) of incubated chick eggs showed that a elastoidic fiber type could be achieved under experimental conditions within 5h. The stages leading up to fiber formation could very well be produced by fibrocytes as well as by the splitting of collagen fibrils. The microfibrils (lacking a periodicity and with a diameter of 60–100Å) are characterized by a strong capacity to bind carbohydrate-proteinrich complexes (proteoglycans and glycoproteins). These then aggreagte to elastoidic fibers. The amorphous fiber center remains strongly attractive for binding cations. This fiber type is then compared to the (elastoidic) fibers present in senile Elastosis and Pseudoxanthoma elasticum. Finally, the possibility of using CAM-cultures as experimental means for simulating such diseases in discussed. Die Organkultur menschlicher Hautexcisate auf der Chorionallantoismembran (CAM) bebrüteter Hühnereier zeigt, daß unter diesen Bedingungen kollagene Fasern bereits nach 5 h in Mikrofibrillen ohne Periodizität mit einem Durchmesser von 60–100 Å aufgespalten werden können. Gleichzeitig tritt ein feingranuläres Material auf. Die Mikrofibrillen sind stark kationbindend (Proteoglykane und Glykoproteine), erscheinen im Querschnitt ≪korbblütenartig≫ und können zu einem Rutheniumrot-positiven amorphen elastoiden Fasertyp aggregieren. Gleichzeitig werden von Fibrocyten ultrastrukturell vergleichbare Mikrofibrillen mit feingranulärem Material ausgeschleust, die ebenfalls über ein ≪Korbblütenstadium≫ in einen kationbindenden, offenbar gleichstrukturierten elastoiden Fasertyp übergehen. Diese Fasern werden mit den bei der senilen Elastose und Pseudoxanthoma elasticum auftretenden pathologischen elastischen Fasern verglichen und die CAM-Organkultur als experimentelle Möglichkeit zur Simulation derartiger Erkrankungen diskutiert.Keywords
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